?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
target: Improve error reporting for CpuModelInfo member @props
[qemu/kevin.git] / linux-user / syscall.c
blob597bdf0c2d4a9bdaffd43f612b6e47a28446c5d3
1 /*
2 * Linux syscalls
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #define _ATFILE_SOURCE
20 #include "qemu/osdep.h"
21 #include "qemu/cutils.h"
22 #include "qemu/path.h"
23 #include "qemu/memfd.h"
24 #include "qemu/queue.h"
25 #include "qemu/plugin.h"
26 #include "tcg/startup.h"
27 #include "target_mman.h"
28 #include <elf.h>
29 #include <endian.h>
30 #include <grp.h>
31 #include <sys/ipc.h>
32 #include <sys/msg.h>
33 #include <sys/wait.h>
34 #include <sys/mount.h>
35 #include <sys/file.h>
36 #include <sys/fsuid.h>
37 #include <sys/personality.h>
38 #include <sys/prctl.h>
39 #include <sys/resource.h>
40 #include <sys/swap.h>
41 #include <linux/capability.h>
42 #include <sched.h>
43 #include <sys/timex.h>
44 #include <sys/socket.h>
45 #include <linux/sockios.h>
46 #include <sys/un.h>
47 #include <sys/uio.h>
48 #include <poll.h>
49 #include <sys/times.h>
50 #include <sys/shm.h>
51 #include <sys/sem.h>
52 #include <sys/statfs.h>
53 #include <utime.h>
54 #include <sys/sysinfo.h>
55 #include <sys/signalfd.h>
56 //#include <sys/user.h>
57 #include <netinet/in.h>
58 #include <netinet/ip.h>
59 #include <netinet/tcp.h>
60 #include <netinet/udp.h>
61 #include <linux/wireless.h>
62 #include <linux/icmp.h>
63 #include <linux/icmpv6.h>
64 #include <linux/if_tun.h>
65 #include <linux/in6.h>
66 #include <linux/errqueue.h>
67 #include <linux/random.h>
68 #ifdef CONFIG_TIMERFD
69 #include <sys/timerfd.h>
70 #endif
71 #ifdef CONFIG_EVENTFD
72 #include <sys/eventfd.h>
73 #endif
74 #ifdef CONFIG_EPOLL
75 #include <sys/epoll.h>
76 #endif
77 #ifdef CONFIG_ATTR
78 #include "qemu/xattr.h"
79 #endif
80 #ifdef CONFIG_SENDFILE
81 #include <sys/sendfile.h>
82 #endif
83 #ifdef HAVE_SYS_KCOV_H
84 #include <sys/kcov.h>
85 #endif
86
87 #define termios host_termios
88 #define winsize host_winsize
89 #define termio host_termio
90 #define sgttyb host_sgttyb /* same as target */
91 #define tchars host_tchars /* same as target */
92 #define ltchars host_ltchars /* same as target */
93
94 #include <linux/termios.h>
95 #include <linux/unistd.h>
96 #include <linux/cdrom.h>
97 #include <linux/hdreg.h>
98 #include <linux/soundcard.h>
99 #include <linux/kd.h>
100 #include <linux/mtio.h>
101 #include <linux/fs.h>
102 #include <linux/fd.h>
103 #if defined(CONFIG_FIEMAP)
104 #include <linux/fiemap.h>
105 #endif
106 #include <linux/fb.h>
107 #if defined(CONFIG_USBFS)
108 #include <linux/usbdevice_fs.h>
109 #include <linux/usb/ch9.h>
110 #endif
111 #include <linux/vt.h>
112 #include <linux/dm-ioctl.h>
113 #include <linux/reboot.h>
114 #include <linux/route.h>
115 #include <linux/filter.h>
116 #include <linux/blkpg.h>
117 #include <netpacket/packet.h>
118 #include <linux/netlink.h>
119 #include <linux/if_alg.h>
120 #include <linux/rtc.h>
121 #include <sound/asound.h>
122 #ifdef HAVE_BTRFS_H
123 #include <linux/btrfs.h>
124 #endif
125 #ifdef HAVE_DRM_H
126 #include <libdrm/drm.h>
127 #include <libdrm/i915_drm.h>
128 #endif
129 #include "linux_loop.h"
130 #include "uname.h"
131
132 #include "qemu.h"
133 #include "user-internals.h"
134 #include "strace.h"
135 #include "signal-common.h"
136 #include "loader.h"
137 #include "user-mmap.h"
138 #include "user/safe-syscall.h"
139 #include "qemu/guest-random.h"
140 #include "qemu/selfmap.h"
141 #include "user/syscall-trace.h"
142 #include "special-errno.h"
143 #include "qapi/error.h"
144 #include "fd-trans.h"
145 #include "cpu_loop-common.h"
146
147 #ifndef CLONE_IO
148 #define CLONE_IO 0x80000000 /* Clone io context */
149 #endif
150
151 /* We can't directly call the host clone syscall, because this will
152 * badly confuse libc (breaking mutexes, for example). So we must
153 * divide clone flags into:
154 * * flag combinations that look like pthread_create()
155 * * flag combinations that look like fork()
156 * * flags we can implement within QEMU itself
157 * * flags we can't support and will return an error for
158 */
159 /* For thread creation, all these flags must be present; for
160 * fork, none must be present.
161 */
162 #define CLONE_THREAD_FLAGS \
163 (CLONE_VM | CLONE_FS | CLONE_FILES | \
164 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
165
166 /* These flags are ignored:
167 * CLONE_DETACHED is now ignored by the kernel;
168 * CLONE_IO is just an optimisation hint to the I/O scheduler
169 */
170 #define CLONE_IGNORED_FLAGS \
171 (CLONE_DETACHED | CLONE_IO)
172
173 #ifndef CLONE_PIDFD
174 # define CLONE_PIDFD 0x00001000
175 #endif
176
177 /* Flags for fork which we can implement within QEMU itself */
178 #define CLONE_OPTIONAL_FORK_FLAGS \
179 (CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_PIDFD | \
180 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
181
182 /* Flags for thread creation which we can implement within QEMU itself */
183 #define CLONE_OPTIONAL_THREAD_FLAGS \
184 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
185 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
186
187 #define CLONE_INVALID_FORK_FLAGS \
188 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
189
190 #define CLONE_INVALID_THREAD_FLAGS \
191 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
192 CLONE_IGNORED_FLAGS))
193
194 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
195 * have almost all been allocated. We cannot support any of
196 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
197 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
198 * The checks against the invalid thread masks above will catch these.
199 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
200 */
201
202 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
203 * once. This exercises the codepaths for restart.
204 */
205 //#define DEBUG_ERESTARTSYS
206
207 //#include <linux/msdos_fs.h>
208 #define VFAT_IOCTL_READDIR_BOTH \
209 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2)
210 #define VFAT_IOCTL_READDIR_SHORT \
211 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2)
212
213 #undef _syscall0
214 #undef _syscall1
215 #undef _syscall2
216 #undef _syscall3
217 #undef _syscall4
218 #undef _syscall5
219 #undef _syscall6
220
221 #define _syscall0(type,name) \
222 static type name (void) \
223 { \
224 return syscall(__NR_##name); \
225 }
226
227 #define _syscall1(type,name,type1,arg1) \
228 static type name (type1 arg1) \
229 { \
230 return syscall(__NR_##name, arg1); \
231 }
232
233 #define _syscall2(type,name,type1,arg1,type2,arg2) \
234 static type name (type1 arg1,type2 arg2) \
235 { \
236 return syscall(__NR_##name, arg1, arg2); \
237 }
238
239 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
240 static type name (type1 arg1,type2 arg2,type3 arg3) \
241 { \
242 return syscall(__NR_##name, arg1, arg2, arg3); \
243 }
244
245 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
246 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
247 { \
248 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
249 }
250
251 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
252 type5,arg5) \
253 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
254 { \
255 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
256 }
257
258
259 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
260 type5,arg5,type6,arg6) \
261 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
262 type6 arg6) \
263 { \
264 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
265 }
266
267
268 #define __NR_sys_uname __NR_uname
269 #define __NR_sys_getcwd1 __NR_getcwd
270 #define __NR_sys_getdents __NR_getdents
271 #define __NR_sys_getdents64 __NR_getdents64
272 #define __NR_sys_getpriority __NR_getpriority
273 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
274 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
275 #define __NR_sys_syslog __NR_syslog
276 #if defined(__NR_futex)
277 # define __NR_sys_futex __NR_futex
278 #endif
279 #if defined(__NR_futex_time64)
280 # define __NR_sys_futex_time64 __NR_futex_time64
281 #endif
282 #define __NR_sys_statx __NR_statx
283
284 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
285 #define __NR__llseek __NR_lseek
286 #endif
287
288 /* Newer kernel ports have llseek() instead of _llseek() */
289 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
290 #define TARGET_NR__llseek TARGET_NR_llseek
291 #endif
292
293 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */
294 #ifndef TARGET_O_NONBLOCK_MASK
295 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK
296 #endif
297
298 #define __NR_sys_gettid __NR_gettid
299 _syscall0(int, sys_gettid)
300
301 /* For the 64-bit guest on 32-bit host case we must emulate
302 * getdents using getdents64, because otherwise the host
303 * might hand us back more dirent records than we can fit
304 * into the guest buffer after structure format conversion.
305 * Otherwise we emulate getdents with getdents if the host has it.
306 */
307 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
308 #define EMULATE_GETDENTS_WITH_GETDENTS
309 #endif
310
311 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
312 _syscall3(int, sys_getdents, unsigned int, fd, struct linux_dirent *, dirp, unsigned int, count);
313 #endif
314 #if (defined(TARGET_NR_getdents) && \
315 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
316 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
317 _syscall3(int, sys_getdents64, unsigned int, fd, struct linux_dirent64 *, dirp, unsigned int, count);
318 #endif
319 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
320 _syscall5(int, _llseek, unsigned int, fd, unsigned long, hi, unsigned long, lo,
321 loff_t *, res, unsigned int, wh);
322 #endif
323 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
324 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
325 siginfo_t *, uinfo)
326 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
327 #ifdef __NR_exit_group
328 _syscall1(int,exit_group,int,error_code)
329 #endif
330 #if defined(__NR_close_range) && defined(TARGET_NR_close_range)
331 #define __NR_sys_close_range __NR_close_range
332 _syscall3(int,sys_close_range,int,first,int,last,int,flags)
333 #ifndef CLOSE_RANGE_CLOEXEC
334 #define CLOSE_RANGE_CLOEXEC (1U << 2)
335 #endif
336 #endif
337 #if defined(__NR_futex)
338 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
339 const struct timespec *,timeout,int *,uaddr2,int,val3)
340 #endif
341 #if defined(__NR_futex_time64)
342 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
343 const struct timespec *,timeout,int *,uaddr2,int,val3)
344 #endif
345 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
346 _syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags);
347 #endif
348 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
349 _syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info,
350 unsigned int, flags);
351 #endif
352 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
353 _syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags);
354 #endif
355 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
356 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
357 unsigned long *, user_mask_ptr);
358 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
359 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
360 unsigned long *, user_mask_ptr);
361 /* sched_attr is not defined in glibc */
362 struct sched_attr {
363 uint32_t size;
364 uint32_t sched_policy;
365 uint64_t sched_flags;
366 int32_t sched_nice;
367 uint32_t sched_priority;
368 uint64_t sched_runtime;
369 uint64_t sched_deadline;
370 uint64_t sched_period;
371 uint32_t sched_util_min;
372 uint32_t sched_util_max;
373 };
374 #define __NR_sys_sched_getattr __NR_sched_getattr
375 _syscall4(int, sys_sched_getattr, pid_t, pid, struct sched_attr *, attr,
376 unsigned int, size, unsigned int, flags);
377 #define __NR_sys_sched_setattr __NR_sched_setattr
378 _syscall3(int, sys_sched_setattr, pid_t, pid, struct sched_attr *, attr,
379 unsigned int, flags);
380 #define __NR_sys_sched_getscheduler __NR_sched_getscheduler
381 _syscall1(int, sys_sched_getscheduler, pid_t, pid);
382 #define __NR_sys_sched_setscheduler __NR_sched_setscheduler
383 _syscall3(int, sys_sched_setscheduler, pid_t, pid, int, policy,
384 const struct sched_param *, param);
385 #define __NR_sys_sched_getparam __NR_sched_getparam
386 _syscall2(int, sys_sched_getparam, pid_t, pid,
387 struct sched_param *, param);
388 #define __NR_sys_sched_setparam __NR_sched_setparam
389 _syscall2(int, sys_sched_setparam, pid_t, pid,
390 const struct sched_param *, param);
391 #define __NR_sys_getcpu __NR_getcpu
392 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
393 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
394 void *, arg);
395 _syscall2(int, capget, struct __user_cap_header_struct *, header,
396 struct __user_cap_data_struct *, data);
397 _syscall2(int, capset, struct __user_cap_header_struct *, header,
398 struct __user_cap_data_struct *, data);
399 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
400 _syscall2(int, ioprio_get, int, which, int, who)
401 #endif
402 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
403 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
404 #endif
405 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
406 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
407 #endif
408
409 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
410 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
411 unsigned long, idx1, unsigned long, idx2)
412 #endif
413
414 /*
415 * It is assumed that struct statx is architecture independent.
416 */
417 #if defined(TARGET_NR_statx) && defined(__NR_statx)
418 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
419 unsigned int, mask, struct target_statx *, statxbuf)
420 #endif
421 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
422 _syscall2(int, membarrier, int, cmd, int, flags)
423 #endif
424
425 static const bitmask_transtbl fcntl_flags_tbl[] = {
426 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
427 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
428 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
429 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
430 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
431 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
432 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
433 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
434 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
435 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
436 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
437 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
438 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
439 #if defined(O_DIRECT)
440 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
441 #endif
442 #if defined(O_NOATIME)
443 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
444 #endif
445 #if defined(O_CLOEXEC)
446 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
447 #endif
448 #if defined(O_PATH)
449 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
450 #endif
451 #if defined(O_TMPFILE)
452 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
453 #endif
454 /* Don't terminate the list prematurely on 64-bit host+guest. */
455 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
456 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
457 #endif
458 };
459
460 _syscall2(int, sys_getcwd1, char *, buf, size_t, size)
461
462 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64)
463 #if defined(__NR_utimensat)
464 #define __NR_sys_utimensat __NR_utimensat
465 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
466 const struct timespec *,tsp,int,flags)
467 #else
468 static int sys_utimensat(int dirfd, const char *pathname,
469 const struct timespec times[2], int flags)
470 {
471 errno = ENOSYS;
472 return -1;
473 }
474 #endif
475 #endif /* TARGET_NR_utimensat */
476
477 #ifdef TARGET_NR_renameat2
478 #if defined(__NR_renameat2)
479 #define __NR_sys_renameat2 __NR_renameat2
480 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
481 const char *, new, unsigned int, flags)
482 #else
483 static int sys_renameat2(int oldfd, const char *old,
484 int newfd, const char *new, int flags)
485 {
486 if (flags == 0) {
487 return renameat(oldfd, old, newfd, new);
488 }
489 errno = ENOSYS;
490 return -1;
491 }
492 #endif
493 #endif /* TARGET_NR_renameat2 */
494
495 #ifdef CONFIG_INOTIFY
496 #include <sys/inotify.h>
497 #else
498 /* Userspace can usually survive runtime without inotify */
499 #undef TARGET_NR_inotify_init
500 #undef TARGET_NR_inotify_init1
501 #undef TARGET_NR_inotify_add_watch
502 #undef TARGET_NR_inotify_rm_watch
503 #endif /* CONFIG_INOTIFY */
504
505 #if defined(TARGET_NR_prlimit64)
506 #ifndef __NR_prlimit64
507 # define __NR_prlimit64 -1
508 #endif
509 #define __NR_sys_prlimit64 __NR_prlimit64
510 /* The glibc rlimit structure may not be that used by the underlying syscall */
511 struct host_rlimit64 {
512 uint64_t rlim_cur;
513 uint64_t rlim_max;
514 };
515 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
516 const struct host_rlimit64 *, new_limit,
517 struct host_rlimit64 *, old_limit)
518 #endif
519
520
521 #if defined(TARGET_NR_timer_create)
522 /* Maximum of 32 active POSIX timers allowed at any one time. */
523 #define GUEST_TIMER_MAX 32
524 static timer_t g_posix_timers[GUEST_TIMER_MAX];
525 static int g_posix_timer_allocated[GUEST_TIMER_MAX];
526
527 static inline int next_free_host_timer(void)
528 {
529 int k;
530 for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) {
531 if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) {
532 return k;
533 }
534 }
535 return -1;
536 }
537
538 static inline void free_host_timer_slot(int id)
539 {
540 qatomic_store_release(g_posix_timer_allocated + id, 0);
541 }
542 #endif
543
544 static inline int host_to_target_errno(int host_errno)
545 {
546 switch (host_errno) {
547 #define E(X) case X: return TARGET_##X;
548 #include "errnos.c.inc"
549 #undef E
550 default:
551 return host_errno;
552 }
553 }
554
555 static inline int target_to_host_errno(int target_errno)
556 {
557 switch (target_errno) {
558 #define E(X) case TARGET_##X: return X;
559 #include "errnos.c.inc"
560 #undef E
561 default:
562 return target_errno;
563 }
564 }
565
566 abi_long get_errno(abi_long ret)
567 {
568 if (ret == -1)
569 return -host_to_target_errno(errno);
570 else
571 return ret;
572 }
573
574 const char *target_strerror(int err)
575 {
576 if (err == QEMU_ERESTARTSYS) {
577 return "To be restarted";
578 }
579 if (err == QEMU_ESIGRETURN) {
580 return "Successful exit from sigreturn";
581 }
582
583 return strerror(target_to_host_errno(err));
584 }
585
586 static int check_zeroed_user(abi_long addr, size_t ksize, size_t usize)
587 {
588 int i;
589 uint8_t b;
590 if (usize <= ksize) {
591 return 1;
592 }
593 for (i = ksize; i < usize; i++) {
594 if (get_user_u8(b, addr + i)) {
595 return -TARGET_EFAULT;
596 }
597 if (b != 0) {
598 return 0;
599 }
600 }
601 return 1;
602 }
603
604 #define safe_syscall0(type, name) \
605 static type safe_##name(void) \
606 { \
607 return safe_syscall(__NR_##name); \
608 }
609
610 #define safe_syscall1(type, name, type1, arg1) \
611 static type safe_##name(type1 arg1) \
612 { \
613 return safe_syscall(__NR_##name, arg1); \
614 }
615
616 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
617 static type safe_##name(type1 arg1, type2 arg2) \
618 { \
619 return safe_syscall(__NR_##name, arg1, arg2); \
620 }
621
622 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
623 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
624 { \
625 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
626 }
627
628 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
629 type4, arg4) \
630 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
631 { \
632 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
633 }
634
635 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
636 type4, arg4, type5, arg5) \
637 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
638 type5 arg5) \
639 { \
640 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
641 }
642
643 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
644 type4, arg4, type5, arg5, type6, arg6) \
645 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
646 type5 arg5, type6 arg6) \
647 { \
648 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
649 }
650
651 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
652 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
653 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
654 int, flags, mode_t, mode)
655 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
656 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
657 struct rusage *, rusage)
658 #endif
659 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
660 int, options, struct rusage *, rusage)
661 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
662 safe_syscall5(int, execveat, int, dirfd, const char *, filename,
663 char **, argv, char **, envp, int, flags)
664 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
665 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
666 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
667 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
668 #endif
669 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64)
670 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
671 struct timespec *, tsp, const sigset_t *, sigmask,
672 size_t, sigsetsize)
673 #endif
674 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
675 int, maxevents, int, timeout, const sigset_t *, sigmask,
676 size_t, sigsetsize)
677 #if defined(__NR_futex)
678 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
679 const struct timespec *,timeout,int *,uaddr2,int,val3)
680 #endif
681 #if defined(__NR_futex_time64)
682 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \
683 const struct timespec *,timeout,int *,uaddr2,int,val3)
684 #endif
685 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
686 safe_syscall2(int, kill, pid_t, pid, int, sig)
687 safe_syscall2(int, tkill, int, tid, int, sig)
688 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
689 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
690 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
691 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
692 unsigned long, pos_l, unsigned long, pos_h)
693 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
694 unsigned long, pos_l, unsigned long, pos_h)
695 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
696 socklen_t, addrlen)
697 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
698 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
699 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
700 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
701 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
702 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
703 safe_syscall2(int, flock, int, fd, int, operation)
704 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64)
705 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
706 const struct timespec *, uts, size_t, sigsetsize)
707 #endif
708 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
709 int, flags)
710 #if defined(TARGET_NR_nanosleep)
711 safe_syscall2(int, nanosleep, const struct timespec *, req,
712 struct timespec *, rem)
713 #endif
714 #if defined(TARGET_NR_clock_nanosleep) || \
715 defined(TARGET_NR_clock_nanosleep_time64)
716 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
717 const struct timespec *, req, struct timespec *, rem)
718 #endif
719 #ifdef __NR_ipc
720 #ifdef __s390x__
721 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third,
722 void *, ptr)
723 #else
724 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
725 void *, ptr, long, fifth)
726 #endif
727 #endif
728 #ifdef __NR_msgsnd
729 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
730 int, flags)
731 #endif
732 #ifdef __NR_msgrcv
733 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
734 long, msgtype, int, flags)
735 #endif
736 #ifdef __NR_semtimedop
737 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
738 unsigned, nsops, const struct timespec *, timeout)
739 #endif
740 #if defined(TARGET_NR_mq_timedsend) || \
741 defined(TARGET_NR_mq_timedsend_time64)
742 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
743 size_t, len, unsigned, prio, const struct timespec *, timeout)
744 #endif
745 #if defined(TARGET_NR_mq_timedreceive) || \
746 defined(TARGET_NR_mq_timedreceive_time64)
747 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
748 size_t, len, unsigned *, prio, const struct timespec *, timeout)
749 #endif
750 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
751 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff,
752 int, outfd, loff_t *, poutoff, size_t, length,
753 unsigned int, flags)
754 #endif
755
756 /* We do ioctl like this rather than via safe_syscall3 to preserve the
757 * "third argument might be integer or pointer or not present" behaviour of
758 * the libc function.
759 */
760 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
761 /* Similarly for fcntl. Note that callers must always:
762 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
763 * use the flock64 struct rather than unsuffixed flock
764 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
765 */
766 #ifdef __NR_fcntl64
767 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
768 #else
769 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
770 #endif
771
772 static inline int host_to_target_sock_type(int host_type)
773 {
774 int target_type;
775
776 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
777 case SOCK_DGRAM:
778 target_type = TARGET_SOCK_DGRAM;
779 break;
780 case SOCK_STREAM:
781 target_type = TARGET_SOCK_STREAM;
782 break;
783 default:
784 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
785 break;
786 }
787
788 #if defined(SOCK_CLOEXEC)
789 if (host_type & SOCK_CLOEXEC) {
790 target_type |= TARGET_SOCK_CLOEXEC;
791 }
792 #endif
793
794 #if defined(SOCK_NONBLOCK)
795 if (host_type & SOCK_NONBLOCK) {
796 target_type |= TARGET_SOCK_NONBLOCK;
797 }
798 #endif
799
800 return target_type;
801 }
802
803 static abi_ulong target_brk, initial_target_brk;
804
805 void target_set_brk(abi_ulong new_brk)
806 {
807 target_brk = TARGET_PAGE_ALIGN(new_brk);
808 initial_target_brk = target_brk;
809 }
810
811 /* do_brk() must return target values and target errnos. */
812 abi_long do_brk(abi_ulong brk_val)
813 {
814 abi_long mapped_addr;
815 abi_ulong new_brk;
816 abi_ulong old_brk;
817
818 /* brk pointers are always untagged */
819
820 /* do not allow to shrink below initial brk value */
821 if (brk_val < initial_target_brk) {
822 return target_brk;
823 }
824
825 new_brk = TARGET_PAGE_ALIGN(brk_val);
826 old_brk = TARGET_PAGE_ALIGN(target_brk);
827
828 /* new and old target_brk might be on the same page */
829 if (new_brk == old_brk) {
830 target_brk = brk_val;
831 return target_brk;
832 }
833
834 /* Release heap if necessary */
835 if (new_brk < old_brk) {
836 target_munmap(new_brk, old_brk - new_brk);
837
838 target_brk = brk_val;
839 return target_brk;
840 }
841
842 mapped_addr = target_mmap(old_brk, new_brk - old_brk,
843 PROT_READ | PROT_WRITE,
844 MAP_FIXED_NOREPLACE | MAP_ANON | MAP_PRIVATE,
845 -1, 0);
846
847 if (mapped_addr == old_brk) {
848 target_brk = brk_val;
849 return target_brk;
850 }
851
852 #if defined(TARGET_ALPHA)
853 /* We (partially) emulate OSF/1 on Alpha, which requires we
854 return a proper errno, not an unchanged brk value. */
855 return -TARGET_ENOMEM;
856 #endif
857 /* For everything else, return the previous break. */
858 return target_brk;
859 }
860
861 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
862 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
863 static inline abi_long copy_from_user_fdset(fd_set *fds,
864 abi_ulong target_fds_addr,
865 int n)
866 {
867 int i, nw, j, k;
868 abi_ulong b, *target_fds;
869
870 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
871 if (!(target_fds = lock_user(VERIFY_READ,
872 target_fds_addr,
873 sizeof(abi_ulong) * nw,
874 1)))
875 return -TARGET_EFAULT;
876
877 FD_ZERO(fds);
878 k = 0;
879 for (i = 0; i < nw; i++) {
880 /* grab the abi_ulong */
881 __get_user(b, &target_fds[i]);
882 for (j = 0; j < TARGET_ABI_BITS; j++) {
883 /* check the bit inside the abi_ulong */
884 if ((b >> j) & 1)
885 FD_SET(k, fds);
886 k++;
887 }
888 }
889
890 unlock_user(target_fds, target_fds_addr, 0);
891
892 return 0;
893 }
894
895 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
896 abi_ulong target_fds_addr,
897 int n)
898 {
899 if (target_fds_addr) {
900 if (copy_from_user_fdset(fds, target_fds_addr, n))
901 return -TARGET_EFAULT;
902 *fds_ptr = fds;
903 } else {
904 *fds_ptr = NULL;
905 }
906 return 0;
907 }
908
909 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
910 const fd_set *fds,
911 int n)
912 {
913 int i, nw, j, k;
914 abi_long v;
915 abi_ulong *target_fds;
916
917 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
918 if (!(target_fds = lock_user(VERIFY_WRITE,
919 target_fds_addr,
920 sizeof(abi_ulong) * nw,
921 0)))
922 return -TARGET_EFAULT;
923
924 k = 0;
925 for (i = 0; i < nw; i++) {
926 v = 0;
927 for (j = 0; j < TARGET_ABI_BITS; j++) {
928 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
929 k++;
930 }
931 __put_user(v, &target_fds[i]);
932 }
933
934 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
935
936 return 0;
937 }
938 #endif
939
940 #if defined(__alpha__)
941 #define HOST_HZ 1024
942 #else
943 #define HOST_HZ 100
944 #endif
945
946 static inline abi_long host_to_target_clock_t(long ticks)
947 {
948 #if HOST_HZ == TARGET_HZ
949 return ticks;
950 #else
951 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
952 #endif
953 }
954
955 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
956 const struct rusage *rusage)
957 {
958 struct target_rusage *target_rusage;
959
960 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
961 return -TARGET_EFAULT;
962 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
963 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
964 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
965 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
966 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
967 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
968 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
969 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
970 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
971 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
972 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
973 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
974 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
975 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
976 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
977 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
978 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
979 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
980 unlock_user_struct(target_rusage, target_addr, 1);
981
982 return 0;
983 }
984
985 #ifdef TARGET_NR_setrlimit
986 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
987 {
988 abi_ulong target_rlim_swap;
989 rlim_t result;
990
991 target_rlim_swap = tswapal(target_rlim);
992 if (target_rlim_swap == TARGET_RLIM_INFINITY)
993 return RLIM_INFINITY;
994
995 result = target_rlim_swap;
996 if (target_rlim_swap != (rlim_t)result)
997 return RLIM_INFINITY;
998
999 return result;
1000 }
1001 #endif
1002
1003 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
1004 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1005 {
1006 abi_ulong target_rlim_swap;
1007 abi_ulong result;
1008
1009 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1010 target_rlim_swap = TARGET_RLIM_INFINITY;
1011 else
1012 target_rlim_swap = rlim;
1013 result = tswapal(target_rlim_swap);
1014
1015 return result;
1016 }
1017 #endif
1018
1019 static inline int target_to_host_resource(int code)
1020 {
1021 switch (code) {
1022 case TARGET_RLIMIT_AS:
1023 return RLIMIT_AS;
1024 case TARGET_RLIMIT_CORE:
1025 return RLIMIT_CORE;
1026 case TARGET_RLIMIT_CPU:
1027 return RLIMIT_CPU;
1028 case TARGET_RLIMIT_DATA:
1029 return RLIMIT_DATA;
1030 case TARGET_RLIMIT_FSIZE:
1031 return RLIMIT_FSIZE;
1032 case TARGET_RLIMIT_LOCKS:
1033 return RLIMIT_LOCKS;
1034 case TARGET_RLIMIT_MEMLOCK:
1035 return RLIMIT_MEMLOCK;
1036 case TARGET_RLIMIT_MSGQUEUE:
1037 return RLIMIT_MSGQUEUE;
1038 case TARGET_RLIMIT_NICE:
1039 return RLIMIT_NICE;
1040 case TARGET_RLIMIT_NOFILE:
1041 return RLIMIT_NOFILE;
1042 case TARGET_RLIMIT_NPROC:
1043 return RLIMIT_NPROC;
1044 case TARGET_RLIMIT_RSS:
1045 return RLIMIT_RSS;
1046 case TARGET_RLIMIT_RTPRIO:
1047 return RLIMIT_RTPRIO;
1048 #ifdef RLIMIT_RTTIME
1049 case TARGET_RLIMIT_RTTIME:
1050 return RLIMIT_RTTIME;
1051 #endif
1052 case TARGET_RLIMIT_SIGPENDING:
1053 return RLIMIT_SIGPENDING;
1054 case TARGET_RLIMIT_STACK:
1055 return RLIMIT_STACK;
1056 default:
1057 return code;
1058 }
1059 }
1060
1061 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1062 abi_ulong target_tv_addr)
1063 {
1064 struct target_timeval *target_tv;
1065
1066 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1067 return -TARGET_EFAULT;
1068 }
1069
1070 __get_user(tv->tv_sec, &target_tv->tv_sec);
1071 __get_user(tv->tv_usec, &target_tv->tv_usec);
1072
1073 unlock_user_struct(target_tv, target_tv_addr, 0);
1074
1075 return 0;
1076 }
1077
1078 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1079 const struct timeval *tv)
1080 {
1081 struct target_timeval *target_tv;
1082
1083 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1084 return -TARGET_EFAULT;
1085 }
1086
1087 __put_user(tv->tv_sec, &target_tv->tv_sec);
1088 __put_user(tv->tv_usec, &target_tv->tv_usec);
1089
1090 unlock_user_struct(target_tv, target_tv_addr, 1);
1091
1092 return 0;
1093 }
1094
1095 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
1096 static inline abi_long copy_from_user_timeval64(struct timeval *tv,
1097 abi_ulong target_tv_addr)
1098 {
1099 struct target__kernel_sock_timeval *target_tv;
1100
1101 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1102 return -TARGET_EFAULT;
1103 }
1104
1105 __get_user(tv->tv_sec, &target_tv->tv_sec);
1106 __get_user(tv->tv_usec, &target_tv->tv_usec);
1107
1108 unlock_user_struct(target_tv, target_tv_addr, 0);
1109
1110 return 0;
1111 }
1112 #endif
1113
1114 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1115 const struct timeval *tv)
1116 {
1117 struct target__kernel_sock_timeval *target_tv;
1118
1119 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1120 return -TARGET_EFAULT;
1121 }
1122
1123 __put_user(tv->tv_sec, &target_tv->tv_sec);
1124 __put_user(tv->tv_usec, &target_tv->tv_usec);
1125
1126 unlock_user_struct(target_tv, target_tv_addr, 1);
1127
1128 return 0;
1129 }
1130
1131 #if defined(TARGET_NR_futex) || \
1132 defined(TARGET_NR_rt_sigtimedwait) || \
1133 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
1134 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
1135 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
1136 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \
1137 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \
1138 defined(TARGET_NR_timer_settime) || \
1139 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
1140 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1141 abi_ulong target_addr)
1142 {
1143 struct target_timespec *target_ts;
1144
1145 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1146 return -TARGET_EFAULT;
1147 }
1148 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1149 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1150 unlock_user_struct(target_ts, target_addr, 0);
1151 return 0;
1152 }
1153 #endif
1154
1155 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \
1156 defined(TARGET_NR_timer_settime64) || \
1157 defined(TARGET_NR_mq_timedsend_time64) || \
1158 defined(TARGET_NR_mq_timedreceive_time64) || \
1159 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \
1160 defined(TARGET_NR_clock_nanosleep_time64) || \
1161 defined(TARGET_NR_rt_sigtimedwait_time64) || \
1162 defined(TARGET_NR_utimensat) || \
1163 defined(TARGET_NR_utimensat_time64) || \
1164 defined(TARGET_NR_semtimedop_time64) || \
1165 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64)
1166 static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
1167 abi_ulong target_addr)
1168 {
1169 struct target__kernel_timespec *target_ts;
1170
1171 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1172 return -TARGET_EFAULT;
1173 }
1174 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1175 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1176 /* in 32bit mode, this drops the padding */
1177 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec;
1178 unlock_user_struct(target_ts, target_addr, 0);
1179 return 0;
1180 }
1181 #endif
1182
1183 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1184 struct timespec *host_ts)
1185 {
1186 struct target_timespec *target_ts;
1187
1188 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1189 return -TARGET_EFAULT;
1190 }
1191 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1192 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1193 unlock_user_struct(target_ts, target_addr, 1);
1194 return 0;
1195 }
1196
1197 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1198 struct timespec *host_ts)
1199 {
1200 struct target__kernel_timespec *target_ts;
1201
1202 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1203 return -TARGET_EFAULT;
1204 }
1205 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1206 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1207 unlock_user_struct(target_ts, target_addr, 1);
1208 return 0;
1209 }
1210
1211 #if defined(TARGET_NR_gettimeofday)
1212 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
1213 struct timezone *tz)
1214 {
1215 struct target_timezone *target_tz;
1216
1217 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
1218 return -TARGET_EFAULT;
1219 }
1220
1221 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1222 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1223
1224 unlock_user_struct(target_tz, target_tz_addr, 1);
1225
1226 return 0;
1227 }
1228 #endif
1229
1230 #if defined(TARGET_NR_settimeofday)
1231 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1232 abi_ulong target_tz_addr)
1233 {
1234 struct target_timezone *target_tz;
1235
1236 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1237 return -TARGET_EFAULT;
1238 }
1239
1240 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1241 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1242
1243 unlock_user_struct(target_tz, target_tz_addr, 0);
1244
1245 return 0;
1246 }
1247 #endif
1248
1249 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1250 #include <mqueue.h>
1251
1252 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1253 abi_ulong target_mq_attr_addr)
1254 {
1255 struct target_mq_attr *target_mq_attr;
1256
1257 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1258 target_mq_attr_addr, 1))
1259 return -TARGET_EFAULT;
1260
1261 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1262 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1263 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1264 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1265
1266 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1267
1268 return 0;
1269 }
1270
1271 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1272 const struct mq_attr *attr)
1273 {
1274 struct target_mq_attr *target_mq_attr;
1275
1276 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1277 target_mq_attr_addr, 0))
1278 return -TARGET_EFAULT;
1279
1280 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1281 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1282 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1283 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1284
1285 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1286
1287 return 0;
1288 }
1289 #endif
1290
1291 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1292 /* do_select() must return target values and target errnos. */
1293 static abi_long do_select(int n,
1294 abi_ulong rfd_addr, abi_ulong wfd_addr,
1295 abi_ulong efd_addr, abi_ulong target_tv_addr)
1296 {
1297 fd_set rfds, wfds, efds;
1298 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1299 struct timeval tv;
1300 struct timespec ts, *ts_ptr;
1301 abi_long ret;
1302
1303 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1304 if (ret) {
1305 return ret;
1306 }
1307 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1308 if (ret) {
1309 return ret;
1310 }
1311 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1312 if (ret) {
1313 return ret;
1314 }
1315
1316 if (target_tv_addr) {
1317 if (copy_from_user_timeval(&tv, target_tv_addr))
1318 return -TARGET_EFAULT;
1319 ts.tv_sec = tv.tv_sec;
1320 ts.tv_nsec = tv.tv_usec * 1000;
1321 ts_ptr = &ts;
1322 } else {
1323 ts_ptr = NULL;
1324 }
1325
1326 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1327 ts_ptr, NULL));
1328
1329 if (!is_error(ret)) {
1330 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1331 return -TARGET_EFAULT;
1332 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1333 return -TARGET_EFAULT;
1334 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1335 return -TARGET_EFAULT;
1336
1337 if (target_tv_addr) {
1338 tv.tv_sec = ts.tv_sec;
1339 tv.tv_usec = ts.tv_nsec / 1000;
1340 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1341 return -TARGET_EFAULT;
1342 }
1343 }
1344 }
1345
1346 return ret;
1347 }
1348
1349 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1350 static abi_long do_old_select(abi_ulong arg1)
1351 {
1352 struct target_sel_arg_struct *sel;
1353 abi_ulong inp, outp, exp, tvp;
1354 long nsel;
1355
1356 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1357 return -TARGET_EFAULT;
1358 }
1359
1360 nsel = tswapal(sel->n);
1361 inp = tswapal(sel->inp);
1362 outp = tswapal(sel->outp);
1363 exp = tswapal(sel->exp);
1364 tvp = tswapal(sel->tvp);
1365
1366 unlock_user_struct(sel, arg1, 0);
1367
1368 return do_select(nsel, inp, outp, exp, tvp);
1369 }
1370 #endif
1371 #endif
1372
1373 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
1374 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3,
1375 abi_long arg4, abi_long arg5, abi_long arg6,
1376 bool time64)
1377 {
1378 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
1379 fd_set rfds, wfds, efds;
1380 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1381 struct timespec ts, *ts_ptr;
1382 abi_long ret;
1383
1384 /*
1385 * The 6th arg is actually two args smashed together,
1386 * so we cannot use the C library.
1387 */
1388 struct {
1389 sigset_t *set;
1390 size_t size;
1391 } sig, *sig_ptr;
1392
1393 abi_ulong arg_sigset, arg_sigsize, *arg7;
1394
1395 n = arg1;
1396 rfd_addr = arg2;
1397 wfd_addr = arg3;
1398 efd_addr = arg4;
1399 ts_addr = arg5;
1400
1401 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1402 if (ret) {
1403 return ret;
1404 }
1405 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1406 if (ret) {
1407 return ret;
1408 }
1409 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1410 if (ret) {
1411 return ret;
1412 }
1413
1414 /*
1415 * This takes a timespec, and not a timeval, so we cannot
1416 * use the do_select() helper ...
1417 */
1418 if (ts_addr) {
1419 if (time64) {
1420 if (target_to_host_timespec64(&ts, ts_addr)) {
1421 return -TARGET_EFAULT;
1422 }
1423 } else {
1424 if (target_to_host_timespec(&ts, ts_addr)) {
1425 return -TARGET_EFAULT;
1426 }
1427 }
1428 ts_ptr = &ts;
1429 } else {
1430 ts_ptr = NULL;
1431 }
1432
1433 /* Extract the two packed args for the sigset */
1434 sig_ptr = NULL;
1435 if (arg6) {
1436 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
1437 if (!arg7) {
1438 return -TARGET_EFAULT;
1439 }
1440 arg_sigset = tswapal(arg7[0]);
1441 arg_sigsize = tswapal(arg7[1]);
1442 unlock_user(arg7, arg6, 0);
1443
1444 if (arg_sigset) {
1445 ret = process_sigsuspend_mask(&sig.set, arg_sigset, arg_sigsize);
1446 if (ret != 0) {
1447 return ret;
1448 }
1449 sig_ptr = &sig;
1450 sig.size = SIGSET_T_SIZE;
1451 }
1452 }
1453
1454 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1455 ts_ptr, sig_ptr));
1456
1457 if (sig_ptr) {
1458 finish_sigsuspend_mask(ret);
1459 }
1460
1461 if (!is_error(ret)) {
1462 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) {
1463 return -TARGET_EFAULT;
1464 }
1465 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) {
1466 return -TARGET_EFAULT;
1467 }
1468 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) {
1469 return -TARGET_EFAULT;
1470 }
1471 if (time64) {
1472 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) {
1473 return -TARGET_EFAULT;
1474 }
1475 } else {
1476 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) {
1477 return -TARGET_EFAULT;
1478 }
1479 }
1480 }
1481 return ret;
1482 }
1483 #endif
1484
1485 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \
1486 defined(TARGET_NR_ppoll_time64)
1487 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3,
1488 abi_long arg4, abi_long arg5, bool ppoll, bool time64)
1489 {
1490 struct target_pollfd *target_pfd;
1491 unsigned int nfds = arg2;
1492 struct pollfd *pfd;
1493 unsigned int i;
1494 abi_long ret;
1495
1496 pfd = NULL;
1497 target_pfd = NULL;
1498 if (nfds) {
1499 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
1500 return -TARGET_EINVAL;
1501 }
1502 target_pfd = lock_user(VERIFY_WRITE, arg1,
1503 sizeof(struct target_pollfd) * nfds, 1);
1504 if (!target_pfd) {
1505 return -TARGET_EFAULT;
1506 }
1507
1508 pfd = alloca(sizeof(struct pollfd) * nfds);
1509 for (i = 0; i < nfds; i++) {
1510 pfd[i].fd = tswap32(target_pfd[i].fd);
1511 pfd[i].events = tswap16(target_pfd[i].events);
1512 }
1513 }
1514 if (ppoll) {
1515 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
1516 sigset_t *set = NULL;
1517
1518 if (arg3) {
1519 if (time64) {
1520 if (target_to_host_timespec64(timeout_ts, arg3)) {
1521 unlock_user(target_pfd, arg1, 0);
1522 return -TARGET_EFAULT;
1523 }
1524 } else {
1525 if (target_to_host_timespec(timeout_ts, arg3)) {
1526 unlock_user(target_pfd, arg1, 0);
1527 return -TARGET_EFAULT;
1528 }
1529 }
1530 } else {
1531 timeout_ts = NULL;
1532 }
1533
1534 if (arg4) {
1535 ret = process_sigsuspend_mask(&set, arg4, arg5);
1536 if (ret != 0) {
1537 unlock_user(target_pfd, arg1, 0);
1538 return ret;
1539 }
1540 }
1541
1542 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
1543 set, SIGSET_T_SIZE));
1544
1545 if (set) {
1546 finish_sigsuspend_mask(ret);
1547 }
1548 if (!is_error(ret) && arg3) {
1549 if (time64) {
1550 if (host_to_target_timespec64(arg3, timeout_ts)) {
1551 return -TARGET_EFAULT;
1552 }
1553 } else {
1554 if (host_to_target_timespec(arg3, timeout_ts)) {
1555 return -TARGET_EFAULT;
1556 }
1557 }
1558 }
1559 } else {
1560 struct timespec ts, *pts;
1561
1562 if (arg3 >= 0) {
1563 /* Convert ms to secs, ns */
1564 ts.tv_sec = arg3 / 1000;
1565 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
1566 pts = &ts;
1567 } else {
1568 /* -ve poll() timeout means "infinite" */
1569 pts = NULL;
1570 }
1571 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
1572 }
1573
1574 if (!is_error(ret)) {
1575 for (i = 0; i < nfds; i++) {
1576 target_pfd[i].revents = tswap16(pfd[i].revents);
1577 }
1578 }
1579 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
1580 return ret;
1581 }
1582 #endif
1583
1584 static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes,
1585 int flags, int is_pipe2)
1586 {
1587 int host_pipe[2];
1588 abi_long ret;
1589 ret = pipe2(host_pipe, flags);
1590
1591 if (is_error(ret))
1592 return get_errno(ret);
1593
1594 /* Several targets have special calling conventions for the original
1595 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1596 if (!is_pipe2) {
1597 #if defined(TARGET_ALPHA)
1598 cpu_env->ir[IR_A4] = host_pipe[1];
1599 return host_pipe[0];
1600 #elif defined(TARGET_MIPS)
1601 cpu_env->active_tc.gpr[3] = host_pipe[1];
1602 return host_pipe[0];
1603 #elif defined(TARGET_SH4)
1604 cpu_env->gregs[1] = host_pipe[1];
1605 return host_pipe[0];
1606 #elif defined(TARGET_SPARC)
1607 cpu_env->regwptr[1] = host_pipe[1];
1608 return host_pipe[0];
1609 #endif
1610 }
1611
1612 if (put_user_s32(host_pipe[0], pipedes)
1613 || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int)))
1614 return -TARGET_EFAULT;
1615 return get_errno(ret);
1616 }
1617
1618 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1619 abi_ulong target_addr,
1620 socklen_t len)
1621 {
1622 struct target_ip_mreqn *target_smreqn;
1623
1624 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1625 if (!target_smreqn)
1626 return -TARGET_EFAULT;
1627 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1628 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1629 if (len == sizeof(struct target_ip_mreqn))
1630 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1631 unlock_user(target_smreqn, target_addr, 0);
1632
1633 return 0;
1634 }
1635
1636 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1637 abi_ulong target_addr,
1638 socklen_t len)
1639 {
1640 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1641 sa_family_t sa_family;
1642 struct target_sockaddr *target_saddr;
1643
1644 if (fd_trans_target_to_host_addr(fd)) {
1645 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1646 }
1647
1648 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1649 if (!target_saddr)
1650 return -TARGET_EFAULT;
1651
1652 sa_family = tswap16(target_saddr->sa_family);
1653
1654 /* Oops. The caller might send a incomplete sun_path; sun_path
1655 * must be terminated by \0 (see the manual page), but
1656 * unfortunately it is quite common to specify sockaddr_un
1657 * length as "strlen(x->sun_path)" while it should be
1658 * "strlen(...) + 1". We'll fix that here if needed.
1659 * Linux kernel has a similar feature.
1660 */
1661
1662 if (sa_family == AF_UNIX) {
1663 if (len < unix_maxlen && len > 0) {
1664 char *cp = (char*)target_saddr;
1665
1666 if ( cp[len-1] && !cp[len] )
1667 len++;
1668 }
1669 if (len > unix_maxlen)
1670 len = unix_maxlen;
1671 }
1672
1673 memcpy(addr, target_saddr, len);
1674 addr->sa_family = sa_family;
1675 if (sa_family == AF_NETLINK) {
1676 struct sockaddr_nl *nladdr;
1677
1678 nladdr = (struct sockaddr_nl *)addr;
1679 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1680 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1681 } else if (sa_family == AF_PACKET) {
1682 struct target_sockaddr_ll *lladdr;
1683
1684 lladdr = (struct target_sockaddr_ll *)addr;
1685 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1686 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1687 } else if (sa_family == AF_INET6) {
1688 struct sockaddr_in6 *in6addr;
1689
1690 in6addr = (struct sockaddr_in6 *)addr;
1691 in6addr->sin6_scope_id = tswap32(in6addr->sin6_scope_id);
1692 }
1693 unlock_user(target_saddr, target_addr, 0);
1694
1695 return 0;
1696 }
1697
1698 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1699 struct sockaddr *addr,
1700 socklen_t len)
1701 {
1702 struct target_sockaddr *target_saddr;
1703
1704 if (len == 0) {
1705 return 0;
1706 }
1707 assert(addr);
1708
1709 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1710 if (!target_saddr)
1711 return -TARGET_EFAULT;
1712 memcpy(target_saddr, addr, len);
1713 if (len >= offsetof(struct target_sockaddr, sa_family) +
1714 sizeof(target_saddr->sa_family)) {
1715 target_saddr->sa_family = tswap16(addr->sa_family);
1716 }
1717 if (addr->sa_family == AF_NETLINK &&
1718 len >= sizeof(struct target_sockaddr_nl)) {
1719 struct target_sockaddr_nl *target_nl =
1720 (struct target_sockaddr_nl *)target_saddr;
1721 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1722 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1723 } else if (addr->sa_family == AF_PACKET) {
1724 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1725 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1726 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1727 } else if (addr->sa_family == AF_INET6 &&
1728 len >= sizeof(struct target_sockaddr_in6)) {
1729 struct target_sockaddr_in6 *target_in6 =
1730 (struct target_sockaddr_in6 *)target_saddr;
1731 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1732 }
1733 unlock_user(target_saddr, target_addr, len);
1734
1735 return 0;
1736 }
1737
1738 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1739 struct target_msghdr *target_msgh)
1740 {
1741 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1742 abi_long msg_controllen;
1743 abi_ulong target_cmsg_addr;
1744 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1745 socklen_t space = 0;
1746
1747 msg_controllen = tswapal(target_msgh->msg_controllen);
1748 if (msg_controllen < sizeof (struct target_cmsghdr))
1749 goto the_end;
1750 target_cmsg_addr = tswapal(target_msgh->msg_control);
1751 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1752 target_cmsg_start = target_cmsg;
1753 if (!target_cmsg)
1754 return -TARGET_EFAULT;
1755
1756 while (cmsg && target_cmsg) {
1757 void *data = CMSG_DATA(cmsg);
1758 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1759
1760 int len = tswapal(target_cmsg->cmsg_len)
1761 - sizeof(struct target_cmsghdr);
1762
1763 space += CMSG_SPACE(len);
1764 if (space > msgh->msg_controllen) {
1765 space -= CMSG_SPACE(len);
1766 /* This is a QEMU bug, since we allocated the payload
1767 * area ourselves (unlike overflow in host-to-target
1768 * conversion, which is just the guest giving us a buffer
1769 * that's too small). It can't happen for the payload types
1770 * we currently support; if it becomes an issue in future
1771 * we would need to improve our allocation strategy to
1772 * something more intelligent than "twice the size of the
1773 * target buffer we're reading from".
1774 */
1775 qemu_log_mask(LOG_UNIMP,
1776 ("Unsupported ancillary data %d/%d: "
1777 "unhandled msg size\n"),
1778 tswap32(target_cmsg->cmsg_level),
1779 tswap32(target_cmsg->cmsg_type));
1780 break;
1781 }
1782
1783 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1784 cmsg->cmsg_level = SOL_SOCKET;
1785 } else {
1786 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1787 }
1788 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1789 cmsg->cmsg_len = CMSG_LEN(len);
1790
1791 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1792 int *fd = (int *)data;
1793 int *target_fd = (int *)target_data;
1794 int i, numfds = len / sizeof(int);
1795
1796 for (i = 0; i < numfds; i++) {
1797 __get_user(fd[i], target_fd + i);
1798 }
1799 } else if (cmsg->cmsg_level == SOL_SOCKET
1800 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1801 struct ucred *cred = (struct ucred *)data;
1802 struct target_ucred *target_cred =
1803 (struct target_ucred *)target_data;
1804
1805 __get_user(cred->pid, &target_cred->pid);
1806 __get_user(cred->uid, &target_cred->uid);
1807 __get_user(cred->gid, &target_cred->gid);
1808 } else if (cmsg->cmsg_level == SOL_ALG) {
1809 uint32_t *dst = (uint32_t *)data;
1810
1811 memcpy(dst, target_data, len);
1812 /* fix endianness of first 32-bit word */
1813 if (len >= sizeof(uint32_t)) {
1814 *dst = tswap32(*dst);
1815 }
1816 } else {
1817 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1818 cmsg->cmsg_level, cmsg->cmsg_type);
1819 memcpy(data, target_data, len);
1820 }
1821
1822 cmsg = CMSG_NXTHDR(msgh, cmsg);
1823 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1824 target_cmsg_start);
1825 }
1826 unlock_user(target_cmsg, target_cmsg_addr, 0);
1827 the_end:
1828 msgh->msg_controllen = space;
1829 return 0;
1830 }
1831
1832 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1833 struct msghdr *msgh)
1834 {
1835 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1836 abi_long msg_controllen;
1837 abi_ulong target_cmsg_addr;
1838 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1839 socklen_t space = 0;
1840
1841 msg_controllen = tswapal(target_msgh->msg_controllen);
1842 if (msg_controllen < sizeof (struct target_cmsghdr))
1843 goto the_end;
1844 target_cmsg_addr = tswapal(target_msgh->msg_control);
1845 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1846 target_cmsg_start = target_cmsg;
1847 if (!target_cmsg)
1848 return -TARGET_EFAULT;
1849
1850 while (cmsg && target_cmsg) {
1851 void *data = CMSG_DATA(cmsg);
1852 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1853
1854 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1855 int tgt_len, tgt_space;
1856
1857 /* We never copy a half-header but may copy half-data;
1858 * this is Linux's behaviour in put_cmsg(). Note that
1859 * truncation here is a guest problem (which we report
1860 * to the guest via the CTRUNC bit), unlike truncation
1861 * in target_to_host_cmsg, which is a QEMU bug.
1862 */
1863 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1864 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1865 break;
1866 }
1867
1868 if (cmsg->cmsg_level == SOL_SOCKET) {
1869 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1870 } else {
1871 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1872 }
1873 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1874
1875 /* Payload types which need a different size of payload on
1876 * the target must adjust tgt_len here.
1877 */
1878 tgt_len = len;
1879 switch (cmsg->cmsg_level) {
1880 case SOL_SOCKET:
1881 switch (cmsg->cmsg_type) {
1882 case SO_TIMESTAMP:
1883 tgt_len = sizeof(struct target_timeval);
1884 break;
1885 default:
1886 break;
1887 }
1888 break;
1889 default:
1890 break;
1891 }
1892
1893 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1894 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1895 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1896 }
1897
1898 /* We must now copy-and-convert len bytes of payload
1899 * into tgt_len bytes of destination space. Bear in mind
1900 * that in both source and destination we may be dealing
1901 * with a truncated value!
1902 */
1903 switch (cmsg->cmsg_level) {
1904 case SOL_SOCKET:
1905 switch (cmsg->cmsg_type) {
1906 case SCM_RIGHTS:
1907 {
1908 int *fd = (int *)data;
1909 int *target_fd = (int *)target_data;
1910 int i, numfds = tgt_len / sizeof(int);
1911
1912 for (i = 0; i < numfds; i++) {
1913 __put_user(fd[i], target_fd + i);
1914 }
1915 break;
1916 }
1917 case SO_TIMESTAMP:
1918 {
1919 struct timeval *tv = (struct timeval *)data;
1920 struct target_timeval *target_tv =
1921 (struct target_timeval *)target_data;
1922
1923 if (len != sizeof(struct timeval) ||
1924 tgt_len != sizeof(struct target_timeval)) {
1925 goto unimplemented;
1926 }
1927
1928 /* copy struct timeval to target */
1929 __put_user(tv->tv_sec, &target_tv->tv_sec);
1930 __put_user(tv->tv_usec, &target_tv->tv_usec);
1931 break;
1932 }
1933 case SCM_CREDENTIALS:
1934 {
1935 struct ucred *cred = (struct ucred *)data;
1936 struct target_ucred *target_cred =
1937 (struct target_ucred *)target_data;
1938
1939 __put_user(cred->pid, &target_cred->pid);
1940 __put_user(cred->uid, &target_cred->uid);
1941 __put_user(cred->gid, &target_cred->gid);
1942 break;
1943 }
1944 default:
1945 goto unimplemented;
1946 }
1947 break;
1948
1949 case SOL_IP:
1950 switch (cmsg->cmsg_type) {
1951 case IP_TTL:
1952 {
1953 uint32_t *v = (uint32_t *)data;
1954 uint32_t *t_int = (uint32_t *)target_data;
1955
1956 if (len != sizeof(uint32_t) ||
1957 tgt_len != sizeof(uint32_t)) {
1958 goto unimplemented;
1959 }
1960 __put_user(*v, t_int);
1961 break;
1962 }
1963 case IP_RECVERR:
1964 {
1965 struct errhdr_t {
1966 struct sock_extended_err ee;
1967 struct sockaddr_in offender;
1968 };
1969 struct errhdr_t *errh = (struct errhdr_t *)data;
1970 struct errhdr_t *target_errh =
1971 (struct errhdr_t *)target_data;
1972
1973 if (len != sizeof(struct errhdr_t) ||
1974 tgt_len != sizeof(struct errhdr_t)) {
1975 goto unimplemented;
1976 }
1977 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1978 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1979 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1980 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1981 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1982 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1983 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1984 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1985 (void *) &errh->offender, sizeof(errh->offender));
1986 break;
1987 }
1988 default:
1989 goto unimplemented;
1990 }
1991 break;
1992
1993 case SOL_IPV6:
1994 switch (cmsg->cmsg_type) {
1995 case IPV6_HOPLIMIT:
1996 {
1997 uint32_t *v = (uint32_t *)data;
1998 uint32_t *t_int = (uint32_t *)target_data;
1999
2000 if (len != sizeof(uint32_t) ||
2001 tgt_len != sizeof(uint32_t)) {
2002 goto unimplemented;
2003 }
2004 __put_user(*v, t_int);
2005 break;
2006 }
2007 case IPV6_RECVERR:
2008 {
2009 struct errhdr6_t {
2010 struct sock_extended_err ee;
2011 struct sockaddr_in6 offender;
2012 };
2013 struct errhdr6_t *errh = (struct errhdr6_t *)data;
2014 struct errhdr6_t *target_errh =
2015 (struct errhdr6_t *)target_data;
2016
2017 if (len != sizeof(struct errhdr6_t) ||
2018 tgt_len != sizeof(struct errhdr6_t)) {
2019 goto unimplemented;
2020 }
2021 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2022 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2023 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2024 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2025 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2026 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2027 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2028 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2029 (void *) &errh->offender, sizeof(errh->offender));
2030 break;
2031 }
2032 default:
2033 goto unimplemented;
2034 }
2035 break;
2036
2037 default:
2038 unimplemented:
2039 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
2040 cmsg->cmsg_level, cmsg->cmsg_type);
2041 memcpy(target_data, data, MIN(len, tgt_len));
2042 if (tgt_len > len) {
2043 memset(target_data + len, 0, tgt_len - len);
2044 }
2045 }
2046
2047 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
2048 tgt_space = TARGET_CMSG_SPACE(tgt_len);
2049 if (msg_controllen < tgt_space) {
2050 tgt_space = msg_controllen;
2051 }
2052 msg_controllen -= tgt_space;
2053 space += tgt_space;
2054 cmsg = CMSG_NXTHDR(msgh, cmsg);
2055 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
2056 target_cmsg_start);
2057 }
2058 unlock_user(target_cmsg, target_cmsg_addr, space);
2059 the_end:
2060 target_msgh->msg_controllen = tswapal(space);
2061 return 0;
2062 }
2063
2064 /* do_setsockopt() Must return target values and target errnos. */
2065 static abi_long do_setsockopt(int sockfd, int level, int optname,
2066 abi_ulong optval_addr, socklen_t optlen)
2067 {
2068 abi_long ret;
2069 int val;
2070 struct ip_mreqn *ip_mreq;
2071 struct ip_mreq_source *ip_mreq_source;
2072
2073 switch(level) {
2074 case SOL_TCP:
2075 case SOL_UDP:
2076 /* TCP and UDP options all take an 'int' value. */
2077 if (optlen < sizeof(uint32_t))
2078 return -TARGET_EINVAL;
2079
2080 if (get_user_u32(val, optval_addr))
2081 return -TARGET_EFAULT;
2082 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2083 break;
2084 case SOL_IP:
2085 switch(optname) {
2086 case IP_TOS:
2087 case IP_TTL:
2088 case IP_HDRINCL:
2089 case IP_ROUTER_ALERT:
2090 case IP_RECVOPTS:
2091 case IP_RETOPTS:
2092 case IP_PKTINFO:
2093 case IP_MTU_DISCOVER:
2094 case IP_RECVERR:
2095 case IP_RECVTTL:
2096 case IP_RECVTOS:
2097 #ifdef IP_FREEBIND
2098 case IP_FREEBIND:
2099 #endif
2100 case IP_MULTICAST_TTL:
2101 case IP_MULTICAST_LOOP:
2102 val = 0;
2103 if (optlen >= sizeof(uint32_t)) {
2104 if (get_user_u32(val, optval_addr))
2105 return -TARGET_EFAULT;
2106 } else if (optlen >= 1) {
2107 if (get_user_u8(val, optval_addr))
2108 return -TARGET_EFAULT;
2109 }
2110 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2111 break;
2112 case IP_ADD_MEMBERSHIP:
2113 case IP_DROP_MEMBERSHIP:
2114 if (optlen < sizeof (struct target_ip_mreq) ||
2115 optlen > sizeof (struct target_ip_mreqn))
2116 return -TARGET_EINVAL;
2117
2118 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2119 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2120 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2121 break;
2122
2123 case IP_BLOCK_SOURCE:
2124 case IP_UNBLOCK_SOURCE:
2125 case IP_ADD_SOURCE_MEMBERSHIP:
2126 case IP_DROP_SOURCE_MEMBERSHIP:
2127 if (optlen != sizeof (struct target_ip_mreq_source))
2128 return -TARGET_EINVAL;
2129
2130 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2131 if (!ip_mreq_source) {
2132 return -TARGET_EFAULT;
2133 }
2134 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2135 unlock_user (ip_mreq_source, optval_addr, 0);
2136 break;
2137
2138 default:
2139 goto unimplemented;
2140 }
2141 break;
2142 case SOL_IPV6:
2143 switch (optname) {
2144 case IPV6_MTU_DISCOVER:
2145 case IPV6_MTU:
2146 case IPV6_V6ONLY:
2147 case IPV6_RECVPKTINFO:
2148 case IPV6_UNICAST_HOPS:
2149 case IPV6_MULTICAST_HOPS:
2150 case IPV6_MULTICAST_LOOP:
2151 case IPV6_RECVERR:
2152 case IPV6_RECVHOPLIMIT:
2153 case IPV6_2292HOPLIMIT:
2154 case IPV6_CHECKSUM:
2155 case IPV6_ADDRFORM:
2156 case IPV6_2292PKTINFO:
2157 case IPV6_RECVTCLASS:
2158 case IPV6_RECVRTHDR:
2159 case IPV6_2292RTHDR:
2160 case IPV6_RECVHOPOPTS:
2161 case IPV6_2292HOPOPTS:
2162 case IPV6_RECVDSTOPTS:
2163 case IPV6_2292DSTOPTS:
2164 case IPV6_TCLASS:
2165 case IPV6_ADDR_PREFERENCES:
2166 #ifdef IPV6_RECVPATHMTU
2167 case IPV6_RECVPATHMTU:
2168 #endif
2169 #ifdef IPV6_TRANSPARENT
2170 case IPV6_TRANSPARENT:
2171 #endif
2172 #ifdef IPV6_FREEBIND
2173 case IPV6_FREEBIND:
2174 #endif
2175 #ifdef IPV6_RECVORIGDSTADDR
2176 case IPV6_RECVORIGDSTADDR:
2177 #endif
2178 val = 0;
2179 if (optlen < sizeof(uint32_t)) {
2180 return -TARGET_EINVAL;
2181 }
2182 if (get_user_u32(val, optval_addr)) {
2183 return -TARGET_EFAULT;
2184 }
2185 ret = get_errno(setsockopt(sockfd, level, optname,
2186 &val, sizeof(val)));
2187 break;
2188 case IPV6_PKTINFO:
2189 {
2190 struct in6_pktinfo pki;
2191
2192 if (optlen < sizeof(pki)) {
2193 return -TARGET_EINVAL;
2194 }
2195
2196 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2197 return -TARGET_EFAULT;
2198 }
2199
2200 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2201
2202 ret = get_errno(setsockopt(sockfd, level, optname,
2203 &pki, sizeof(pki)));
2204 break;
2205 }
2206 case IPV6_ADD_MEMBERSHIP:
2207 case IPV6_DROP_MEMBERSHIP:
2208 {
2209 struct ipv6_mreq ipv6mreq;
2210
2211 if (optlen < sizeof(ipv6mreq)) {
2212 return -TARGET_EINVAL;
2213 }
2214
2215 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
2216 return -TARGET_EFAULT;
2217 }
2218
2219 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
2220
2221 ret = get_errno(setsockopt(sockfd, level, optname,
2222 &ipv6mreq, sizeof(ipv6mreq)));
2223 break;
2224 }
2225 default:
2226 goto unimplemented;
2227 }
2228 break;
2229 case SOL_ICMPV6:
2230 switch (optname) {
2231 case ICMPV6_FILTER:
2232 {
2233 struct icmp6_filter icmp6f;
2234
2235 if (optlen > sizeof(icmp6f)) {
2236 optlen = sizeof(icmp6f);
2237 }
2238
2239 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2240 return -TARGET_EFAULT;
2241 }
2242
2243 for (val = 0; val < 8; val++) {
2244 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2245 }
2246
2247 ret = get_errno(setsockopt(sockfd, level, optname,
2248 &icmp6f, optlen));
2249 break;
2250 }
2251 default:
2252 goto unimplemented;
2253 }
2254 break;
2255 case SOL_RAW:
2256 switch (optname) {
2257 case ICMP_FILTER:
2258 case IPV6_CHECKSUM:
2259 /* those take an u32 value */
2260 if (optlen < sizeof(uint32_t)) {
2261 return -TARGET_EINVAL;
2262 }
2263
2264 if (get_user_u32(val, optval_addr)) {
2265 return -TARGET_EFAULT;
2266 }
2267 ret = get_errno(setsockopt(sockfd, level, optname,
2268 &val, sizeof(val)));
2269 break;
2270
2271 default:
2272 goto unimplemented;
2273 }
2274 break;
2275 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2276 case SOL_ALG:
2277 switch (optname) {
2278 case ALG_SET_KEY:
2279 {
2280 char *alg_key = g_malloc(optlen);
2281
2282 if (!alg_key) {
2283 return -TARGET_ENOMEM;
2284 }
2285 if (copy_from_user(alg_key, optval_addr, optlen)) {
2286 g_free(alg_key);
2287 return -TARGET_EFAULT;
2288 }
2289 ret = get_errno(setsockopt(sockfd, level, optname,
2290 alg_key, optlen));
2291 g_free(alg_key);
2292 break;
2293 }
2294 case ALG_SET_AEAD_AUTHSIZE:
2295 {
2296 ret = get_errno(setsockopt(sockfd, level, optname,
2297 NULL, optlen));
2298 break;
2299 }
2300 default:
2301 goto unimplemented;
2302 }
2303 break;
2304 #endif
2305 case TARGET_SOL_SOCKET:
2306 switch (optname) {
2307 case TARGET_SO_RCVTIMEO:
2308 {
2309 struct timeval tv;
2310
2311 optname = SO_RCVTIMEO;
2312
2313 set_timeout:
2314 if (optlen != sizeof(struct target_timeval)) {
2315 return -TARGET_EINVAL;
2316 }
2317
2318 if (copy_from_user_timeval(&tv, optval_addr)) {
2319 return -TARGET_EFAULT;
2320 }
2321
2322 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2323 &tv, sizeof(tv)));
2324 return ret;
2325 }
2326 case TARGET_SO_SNDTIMEO:
2327 optname = SO_SNDTIMEO;
2328 goto set_timeout;
2329 case TARGET_SO_ATTACH_FILTER:
2330 {
2331 struct target_sock_fprog *tfprog;
2332 struct target_sock_filter *tfilter;
2333 struct sock_fprog fprog;
2334 struct sock_filter *filter;
2335 int i;
2336
2337 if (optlen != sizeof(*tfprog)) {
2338 return -TARGET_EINVAL;
2339 }
2340 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2341 return -TARGET_EFAULT;
2342 }
2343 if (!lock_user_struct(VERIFY_READ, tfilter,
2344 tswapal(tfprog->filter), 0)) {
2345 unlock_user_struct(tfprog, optval_addr, 1);
2346 return -TARGET_EFAULT;
2347 }
2348
2349 fprog.len = tswap16(tfprog->len);
2350 filter = g_try_new(struct sock_filter, fprog.len);
2351 if (filter == NULL) {
2352 unlock_user_struct(tfilter, tfprog->filter, 1);
2353 unlock_user_struct(tfprog, optval_addr, 1);
2354 return -TARGET_ENOMEM;
2355 }
2356 for (i = 0; i < fprog.len; i++) {
2357 filter[i].code = tswap16(tfilter[i].code);
2358 filter[i].jt = tfilter[i].jt;
2359 filter[i].jf = tfilter[i].jf;
2360 filter[i].k = tswap32(tfilter[i].k);
2361 }
2362 fprog.filter = filter;
2363
2364 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2365 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2366 g_free(filter);
2367
2368 unlock_user_struct(tfilter, tfprog->filter, 1);
2369 unlock_user_struct(tfprog, optval_addr, 1);
2370 return ret;
2371 }
2372 case TARGET_SO_BINDTODEVICE:
2373 {
2374 char *dev_ifname, *addr_ifname;
2375
2376 if (optlen > IFNAMSIZ - 1) {
2377 optlen = IFNAMSIZ - 1;
2378 }
2379 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2380 if (!dev_ifname) {
2381 return -TARGET_EFAULT;
2382 }
2383 optname = SO_BINDTODEVICE;
2384 addr_ifname = alloca(IFNAMSIZ);
2385 memcpy(addr_ifname, dev_ifname, optlen);
2386 addr_ifname[optlen] = 0;
2387 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2388 addr_ifname, optlen));
2389 unlock_user (dev_ifname, optval_addr, 0);
2390 return ret;
2391 }
2392 case TARGET_SO_LINGER:
2393 {
2394 struct linger lg;
2395 struct target_linger *tlg;
2396
2397 if (optlen != sizeof(struct target_linger)) {
2398 return -TARGET_EINVAL;
2399 }
2400 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2401 return -TARGET_EFAULT;
2402 }
2403 __get_user(lg.l_onoff, &tlg->l_onoff);
2404 __get_user(lg.l_linger, &tlg->l_linger);
2405 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2406 &lg, sizeof(lg)));
2407 unlock_user_struct(tlg, optval_addr, 0);
2408 return ret;
2409 }
2410 /* Options with 'int' argument. */
2411 case TARGET_SO_DEBUG:
2412 optname = SO_DEBUG;
2413 break;
2414 case TARGET_SO_REUSEADDR:
2415 optname = SO_REUSEADDR;
2416 break;
2417 #ifdef SO_REUSEPORT
2418 case TARGET_SO_REUSEPORT:
2419 optname = SO_REUSEPORT;
2420 break;
2421 #endif
2422 case TARGET_SO_TYPE:
2423 optname = SO_TYPE;
2424 break;
2425 case TARGET_SO_ERROR:
2426 optname = SO_ERROR;
2427 break;
2428 case TARGET_SO_DONTROUTE:
2429 optname = SO_DONTROUTE;
2430 break;
2431 case TARGET_SO_BROADCAST:
2432 optname = SO_BROADCAST;
2433 break;
2434 case TARGET_SO_SNDBUF:
2435 optname = SO_SNDBUF;
2436 break;
2437 case TARGET_SO_SNDBUFFORCE:
2438 optname = SO_SNDBUFFORCE;
2439 break;
2440 case TARGET_SO_RCVBUF:
2441 optname = SO_RCVBUF;
2442 break;
2443 case TARGET_SO_RCVBUFFORCE:
2444 optname = SO_RCVBUFFORCE;
2445 break;
2446 case TARGET_SO_KEEPALIVE:
2447 optname = SO_KEEPALIVE;
2448 break;
2449 case TARGET_SO_OOBINLINE:
2450 optname = SO_OOBINLINE;
2451 break;
2452 case TARGET_SO_NO_CHECK:
2453 optname = SO_NO_CHECK;
2454 break;
2455 case TARGET_SO_PRIORITY:
2456 optname = SO_PRIORITY;
2457 break;
2458 #ifdef SO_BSDCOMPAT
2459 case TARGET_SO_BSDCOMPAT:
2460 optname = SO_BSDCOMPAT;
2461 break;
2462 #endif
2463 case TARGET_SO_PASSCRED:
2464 optname = SO_PASSCRED;
2465 break;
2466 case TARGET_SO_PASSSEC:
2467 optname = SO_PASSSEC;
2468 break;
2469 case TARGET_SO_TIMESTAMP:
2470 optname = SO_TIMESTAMP;
2471 break;
2472 case TARGET_SO_RCVLOWAT:
2473 optname = SO_RCVLOWAT;
2474 break;
2475 default:
2476 goto unimplemented;
2477 }
2478 if (optlen < sizeof(uint32_t))
2479 return -TARGET_EINVAL;
2480
2481 if (get_user_u32(val, optval_addr))
2482 return -TARGET_EFAULT;
2483 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2484 break;
2485 #ifdef SOL_NETLINK
2486 case SOL_NETLINK:
2487 switch (optname) {
2488 case NETLINK_PKTINFO:
2489 case NETLINK_ADD_MEMBERSHIP:
2490 case NETLINK_DROP_MEMBERSHIP:
2491 case NETLINK_BROADCAST_ERROR:
2492 case NETLINK_NO_ENOBUFS:
2493 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2494 case NETLINK_LISTEN_ALL_NSID:
2495 case NETLINK_CAP_ACK:
2496 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2497 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2498 case NETLINK_EXT_ACK:
2499 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2500 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2501 case NETLINK_GET_STRICT_CHK:
2502 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2503 break;
2504 default:
2505 goto unimplemented;
2506 }
2507 val = 0;
2508 if (optlen < sizeof(uint32_t)) {
2509 return -TARGET_EINVAL;
2510 }
2511 if (get_user_u32(val, optval_addr)) {
2512 return -TARGET_EFAULT;
2513 }
2514 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
2515 sizeof(val)));
2516 break;
2517 #endif /* SOL_NETLINK */
2518 default:
2519 unimplemented:
2520 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
2521 level, optname);
2522 ret = -TARGET_ENOPROTOOPT;
2523 }
2524 return ret;
2525 }
2526
2527 /* do_getsockopt() Must return target values and target errnos. */
2528 static abi_long do_getsockopt(int sockfd, int level, int optname,
2529 abi_ulong optval_addr, abi_ulong optlen)
2530 {
2531 abi_long ret;
2532 int len, val;
2533 socklen_t lv;
2534
2535 switch(level) {
2536 case TARGET_SOL_SOCKET:
2537 level = SOL_SOCKET;
2538 switch (optname) {
2539 /* These don't just return a single integer */
2540 case TARGET_SO_PEERNAME:
2541 goto unimplemented;
2542 case TARGET_SO_RCVTIMEO: {
2543 struct timeval tv;
2544 socklen_t tvlen;
2545
2546 optname = SO_RCVTIMEO;
2547
2548 get_timeout:
2549 if (get_user_u32(len, optlen)) {
2550 return -TARGET_EFAULT;
2551 }
2552 if (len < 0) {
2553 return -TARGET_EINVAL;
2554 }
2555
2556 tvlen = sizeof(tv);
2557 ret = get_errno(getsockopt(sockfd, level, optname,
2558 &tv, &tvlen));
2559 if (ret < 0) {
2560 return ret;
2561 }
2562 if (len > sizeof(struct target_timeval)) {
2563 len = sizeof(struct target_timeval);
2564 }
2565 if (copy_to_user_timeval(optval_addr, &tv)) {
2566 return -TARGET_EFAULT;
2567 }
2568 if (put_user_u32(len, optlen)) {
2569 return -TARGET_EFAULT;
2570 }
2571 break;
2572 }
2573 case TARGET_SO_SNDTIMEO:
2574 optname = SO_SNDTIMEO;
2575 goto get_timeout;
2576 case TARGET_SO_PEERCRED: {
2577 struct ucred cr;
2578 socklen_t crlen;
2579 struct target_ucred *tcr;
2580
2581 if (get_user_u32(len, optlen)) {
2582 return -TARGET_EFAULT;
2583 }
2584 if (len < 0) {
2585 return -TARGET_EINVAL;
2586 }
2587
2588 crlen = sizeof(cr);
2589 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2590 &cr, &crlen));
2591 if (ret < 0) {
2592 return ret;
2593 }
2594 if (len > crlen) {
2595 len = crlen;
2596 }
2597 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2598 return -TARGET_EFAULT;
2599 }
2600 __put_user(cr.pid, &tcr->pid);
2601 __put_user(cr.uid, &tcr->uid);
2602 __put_user(cr.gid, &tcr->gid);
2603 unlock_user_struct(tcr, optval_addr, 1);
2604 if (put_user_u32(len, optlen)) {
2605 return -TARGET_EFAULT;
2606 }
2607 break;
2608 }
2609 case TARGET_SO_PEERSEC: {
2610 char *name;
2611
2612 if (get_user_u32(len, optlen)) {
2613 return -TARGET_EFAULT;
2614 }
2615 if (len < 0) {
2616 return -TARGET_EINVAL;
2617 }
2618 name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
2619 if (!name) {
2620 return -TARGET_EFAULT;
2621 }
2622 lv = len;
2623 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
2624 name, &lv));
2625 if (put_user_u32(lv, optlen)) {
2626 ret = -TARGET_EFAULT;
2627 }
2628 unlock_user(name, optval_addr, lv);
2629 break;
2630 }
2631 case TARGET_SO_LINGER:
2632 {
2633 struct linger lg;
2634 socklen_t lglen;
2635 struct target_linger *tlg;
2636
2637 if (get_user_u32(len, optlen)) {
2638 return -TARGET_EFAULT;
2639 }
2640 if (len < 0) {
2641 return -TARGET_EINVAL;
2642 }
2643
2644 lglen = sizeof(lg);
2645 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2646 &lg, &lglen));
2647 if (ret < 0) {
2648 return ret;
2649 }
2650 if (len > lglen) {
2651 len = lglen;
2652 }
2653 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2654 return -TARGET_EFAULT;
2655 }
2656 __put_user(lg.l_onoff, &tlg->l_onoff);
2657 __put_user(lg.l_linger, &tlg->l_linger);
2658 unlock_user_struct(tlg, optval_addr, 1);
2659 if (put_user_u32(len, optlen)) {
2660 return -TARGET_EFAULT;
2661 }
2662 break;
2663 }
2664 /* Options with 'int' argument. */
2665 case TARGET_SO_DEBUG:
2666 optname = SO_DEBUG;
2667 goto int_case;
2668 case TARGET_SO_REUSEADDR:
2669 optname = SO_REUSEADDR;
2670 goto int_case;
2671 #ifdef SO_REUSEPORT
2672 case TARGET_SO_REUSEPORT:
2673 optname = SO_REUSEPORT;
2674 goto int_case;
2675 #endif
2676 case TARGET_SO_TYPE:
2677 optname = SO_TYPE;
2678 goto int_case;
2679 case TARGET_SO_ERROR:
2680 optname = SO_ERROR;
2681 goto int_case;
2682 case TARGET_SO_DONTROUTE:
2683 optname = SO_DONTROUTE;
2684 goto int_case;
2685 case TARGET_SO_BROADCAST:
2686 optname = SO_BROADCAST;
2687 goto int_case;
2688 case TARGET_SO_SNDBUF:
2689 optname = SO_SNDBUF;
2690 goto int_case;
2691 case TARGET_SO_RCVBUF:
2692 optname = SO_RCVBUF;
2693 goto int_case;
2694 case TARGET_SO_KEEPALIVE:
2695 optname = SO_KEEPALIVE;
2696 goto int_case;
2697 case TARGET_SO_OOBINLINE:
2698 optname = SO_OOBINLINE;
2699 goto int_case;
2700 case TARGET_SO_NO_CHECK:
2701 optname = SO_NO_CHECK;
2702 goto int_case;
2703 case TARGET_SO_PRIORITY:
2704 optname = SO_PRIORITY;
2705 goto int_case;
2706 #ifdef SO_BSDCOMPAT
2707 case TARGET_SO_BSDCOMPAT:
2708 optname = SO_BSDCOMPAT;
2709 goto int_case;
2710 #endif
2711 case TARGET_SO_PASSCRED:
2712 optname = SO_PASSCRED;
2713 goto int_case;
2714 case TARGET_SO_TIMESTAMP:
2715 optname = SO_TIMESTAMP;
2716 goto int_case;
2717 case TARGET_SO_RCVLOWAT:
2718 optname = SO_RCVLOWAT;
2719 goto int_case;
2720 case TARGET_SO_ACCEPTCONN:
2721 optname = SO_ACCEPTCONN;
2722 goto int_case;
2723 case TARGET_SO_PROTOCOL:
2724 optname = SO_PROTOCOL;
2725 goto int_case;
2726 case TARGET_SO_DOMAIN:
2727 optname = SO_DOMAIN;
2728 goto int_case;
2729 default:
2730 goto int_case;
2731 }
2732 break;
2733 case SOL_TCP:
2734 case SOL_UDP:
2735 /* TCP and UDP options all take an 'int' value. */
2736 int_case:
2737 if (get_user_u32(len, optlen))
2738 return -TARGET_EFAULT;
2739 if (len < 0)
2740 return -TARGET_EINVAL;
2741 lv = sizeof(lv);
2742 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2743 if (ret < 0)
2744 return ret;
2745 switch (optname) {
2746 case SO_TYPE:
2747 val = host_to_target_sock_type(val);
2748 break;
2749 case SO_ERROR:
2750 val = host_to_target_errno(val);
2751 break;
2752 }
2753 if (len > lv)
2754 len = lv;
2755 if (len == 4) {
2756 if (put_user_u32(val, optval_addr))
2757 return -TARGET_EFAULT;
2758 } else {
2759 if (put_user_u8(val, optval_addr))
2760 return -TARGET_EFAULT;
2761 }
2762 if (put_user_u32(len, optlen))
2763 return -TARGET_EFAULT;
2764 break;
2765 case SOL_IP:
2766 switch(optname) {
2767 case IP_TOS:
2768 case IP_TTL:
2769 case IP_HDRINCL:
2770 case IP_ROUTER_ALERT:
2771 case IP_RECVOPTS:
2772 case IP_RETOPTS:
2773 case IP_PKTINFO:
2774 case IP_MTU_DISCOVER:
2775 case IP_RECVERR:
2776 case IP_RECVTOS:
2777 #ifdef IP_FREEBIND
2778 case IP_FREEBIND:
2779 #endif
2780 case IP_MULTICAST_TTL:
2781 case IP_MULTICAST_LOOP:
2782 if (get_user_u32(len, optlen))
2783 return -TARGET_EFAULT;
2784 if (len < 0)
2785 return -TARGET_EINVAL;
2786 lv = sizeof(lv);
2787 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2788 if (ret < 0)
2789 return ret;
2790 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2791 len = 1;
2792 if (put_user_u32(len, optlen)
2793 || put_user_u8(val, optval_addr))
2794 return -TARGET_EFAULT;
2795 } else {
2796 if (len > sizeof(int))
2797 len = sizeof(int);
2798 if (put_user_u32(len, optlen)
2799 || put_user_u32(val, optval_addr))
2800 return -TARGET_EFAULT;
2801 }
2802 break;
2803 default:
2804 ret = -TARGET_ENOPROTOOPT;
2805 break;
2806 }
2807 break;
2808 case SOL_IPV6:
2809 switch (optname) {
2810 case IPV6_MTU_DISCOVER:
2811 case IPV6_MTU:
2812 case IPV6_V6ONLY:
2813 case IPV6_RECVPKTINFO:
2814 case IPV6_UNICAST_HOPS:
2815 case IPV6_MULTICAST_HOPS:
2816 case IPV6_MULTICAST_LOOP:
2817 case IPV6_RECVERR:
2818 case IPV6_RECVHOPLIMIT:
2819 case IPV6_2292HOPLIMIT:
2820 case IPV6_CHECKSUM:
2821 case IPV6_ADDRFORM:
2822 case IPV6_2292PKTINFO:
2823 case IPV6_RECVTCLASS:
2824 case IPV6_RECVRTHDR:
2825 case IPV6_2292RTHDR:
2826 case IPV6_RECVHOPOPTS:
2827 case IPV6_2292HOPOPTS:
2828 case IPV6_RECVDSTOPTS:
2829 case IPV6_2292DSTOPTS:
2830 case IPV6_TCLASS:
2831 case IPV6_ADDR_PREFERENCES:
2832 #ifdef IPV6_RECVPATHMTU
2833 case IPV6_RECVPATHMTU:
2834 #endif
2835 #ifdef IPV6_TRANSPARENT
2836 case IPV6_TRANSPARENT:
2837 #endif
2838 #ifdef IPV6_FREEBIND
2839 case IPV6_FREEBIND:
2840 #endif
2841 #ifdef IPV6_RECVORIGDSTADDR
2842 case IPV6_RECVORIGDSTADDR:
2843 #endif
2844 if (get_user_u32(len, optlen))
2845 return -TARGET_EFAULT;
2846 if (len < 0)
2847 return -TARGET_EINVAL;
2848 lv = sizeof(lv);
2849 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2850 if (ret < 0)
2851 return ret;
2852 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2853 len = 1;
2854 if (put_user_u32(len, optlen)
2855 || put_user_u8(val, optval_addr))
2856 return -TARGET_EFAULT;
2857 } else {
2858 if (len > sizeof(int))
2859 len = sizeof(int);
2860 if (put_user_u32(len, optlen)
2861 || put_user_u32(val, optval_addr))
2862 return -TARGET_EFAULT;
2863 }
2864 break;
2865 default:
2866 ret = -TARGET_ENOPROTOOPT;
2867 break;
2868 }
2869 break;
2870 #ifdef SOL_NETLINK
2871 case SOL_NETLINK:
2872 switch (optname) {
2873 case NETLINK_PKTINFO:
2874 case NETLINK_BROADCAST_ERROR:
2875 case NETLINK_NO_ENOBUFS:
2876 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2877 case NETLINK_LISTEN_ALL_NSID:
2878 case NETLINK_CAP_ACK:
2879 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2880 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2881 case NETLINK_EXT_ACK:
2882 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2883 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2884 case NETLINK_GET_STRICT_CHK:
2885 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2886 if (get_user_u32(len, optlen)) {
2887 return -TARGET_EFAULT;
2888 }
2889 if (len != sizeof(val)) {
2890 return -TARGET_EINVAL;
2891 }
2892 lv = len;
2893 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2894 if (ret < 0) {
2895 return ret;
2896 }
2897 if (put_user_u32(lv, optlen)
2898 || put_user_u32(val, optval_addr)) {
2899 return -TARGET_EFAULT;
2900 }
2901 break;
2902 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2903 case NETLINK_LIST_MEMBERSHIPS:
2904 {
2905 uint32_t *results;
2906 int i;
2907 if (get_user_u32(len, optlen)) {
2908 return -TARGET_EFAULT;
2909 }
2910 if (len < 0) {
2911 return -TARGET_EINVAL;
2912 }
2913 results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
2914 if (!results && len > 0) {
2915 return -TARGET_EFAULT;
2916 }
2917 lv = len;
2918 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
2919 if (ret < 0) {
2920 unlock_user(results, optval_addr, 0);
2921 return ret;
2922 }
2923 /* swap host endianness to target endianness. */
2924 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
2925 results[i] = tswap32(results[i]);
2926 }
2927 if (put_user_u32(lv, optlen)) {
2928 return -TARGET_EFAULT;
2929 }
2930 unlock_user(results, optval_addr, 0);
2931 break;
2932 }
2933 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2934 default:
2935 goto unimplemented;
2936 }
2937 break;
2938 #endif /* SOL_NETLINK */
2939 default:
2940 unimplemented:
2941 qemu_log_mask(LOG_UNIMP,
2942 "getsockopt level=%d optname=%d not yet supported\n",
2943 level, optname);
2944 ret = -TARGET_EOPNOTSUPP;
2945 break;
2946 }
2947 return ret;
2948 }
2949
2950 /* Convert target low/high pair representing file offset into the host
2951 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2952 * as the kernel doesn't handle them either.
2953 */
2954 static void target_to_host_low_high(abi_ulong tlow,
2955 abi_ulong thigh,
2956 unsigned long *hlow,
2957 unsigned long *hhigh)
2958 {
2959 uint64_t off = tlow |
2960 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2961 TARGET_LONG_BITS / 2;
2962
2963 *hlow = off;
2964 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
2965 }
2966
2967 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
2968 abi_ulong count, int copy)
2969 {
2970 struct target_iovec *target_vec;
2971 struct iovec *vec;
2972 abi_ulong total_len, max_len;
2973 int i;
2974 int err = 0;
2975 bool bad_address = false;
2976
2977 if (count == 0) {
2978 errno = 0;
2979 return NULL;
2980 }
2981 if (count > IOV_MAX) {
2982 errno = EINVAL;
2983 return NULL;
2984 }
2985
2986 vec = g_try_new0(struct iovec, count);
2987 if (vec == NULL) {
2988 errno = ENOMEM;
2989 return NULL;
2990 }
2991
2992 target_vec = lock_user(VERIFY_READ, target_addr,
2993 count * sizeof(struct target_iovec), 1);
2994 if (target_vec == NULL) {
2995 err = EFAULT;
2996 goto fail2;
2997 }
2998
2999 /* ??? If host page size > target page size, this will result in a
3000 value larger than what we can actually support. */
3001 max_len = 0x7fffffff & TARGET_PAGE_MASK;
3002 total_len = 0;
3003
3004 for (i = 0; i < count; i++) {
3005 abi_ulong base = tswapal(target_vec[i].iov_base);
3006 abi_long len = tswapal(target_vec[i].iov_len);
3007
3008 if (len < 0) {
3009 err = EINVAL;
3010 goto fail;
3011 } else if (len == 0) {
3012 /* Zero length pointer is ignored. */
3013 vec[i].iov_base = 0;
3014 } else {
3015 vec[i].iov_base = lock_user(type, base, len, copy);
3016 /* If the first buffer pointer is bad, this is a fault. But
3017 * subsequent bad buffers will result in a partial write; this
3018 * is realized by filling the vector with null pointers and
3019 * zero lengths. */
3020 if (!vec[i].iov_base) {
3021 if (i == 0) {
3022 err = EFAULT;
3023 goto fail;
3024 } else {
3025 bad_address = true;
3026 }
3027 }
3028 if (bad_address) {
3029 len = 0;
3030 }
3031 if (len > max_len - total_len) {
3032 len = max_len - total_len;
3033 }
3034 }
3035 vec[i].iov_len = len;
3036 total_len += len;
3037 }
3038
3039 unlock_user(target_vec, target_addr, 0);
3040 return vec;
3041
3042 fail:
3043 while (--i >= 0) {
3044 if (tswapal(target_vec[i].iov_len) > 0) {
3045 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3046 }
3047 }
3048 unlock_user(target_vec, target_addr, 0);
3049 fail2:
3050 g_free(vec);
3051 errno = err;
3052 return NULL;
3053 }
3054
3055 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3056 abi_ulong count, int copy)
3057 {
3058 struct target_iovec *target_vec;
3059 int i;
3060
3061 target_vec = lock_user(VERIFY_READ, target_addr,
3062 count * sizeof(struct target_iovec), 1);
3063 if (target_vec) {
3064 for (i = 0; i < count; i++) {
3065 abi_ulong base = tswapal(target_vec[i].iov_base);
3066 abi_long len = tswapal(target_vec[i].iov_len);
3067 if (len < 0) {
3068 break;
3069 }
3070 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3071 }
3072 unlock_user(target_vec, target_addr, 0);
3073 }
3074
3075 g_free(vec);
3076 }
3077
3078 static inline int target_to_host_sock_type(int *type)
3079 {
3080 int host_type = 0;
3081 int target_type = *type;
3082
3083 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3084 case TARGET_SOCK_DGRAM:
3085 host_type = SOCK_DGRAM;
3086 break;
3087 case TARGET_SOCK_STREAM:
3088 host_type = SOCK_STREAM;
3089 break;
3090 default:
3091 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3092 break;
3093 }
3094 if (target_type & TARGET_SOCK_CLOEXEC) {
3095 #if defined(SOCK_CLOEXEC)
3096 host_type |= SOCK_CLOEXEC;
3097 #else
3098 return -TARGET_EINVAL;
3099 #endif
3100 }
3101 if (target_type & TARGET_SOCK_NONBLOCK) {
3102 #if defined(SOCK_NONBLOCK)
3103 host_type |= SOCK_NONBLOCK;
3104 #elif !defined(O_NONBLOCK)
3105 return -TARGET_EINVAL;
3106 #endif
3107 }
3108 *type = host_type;
3109 return 0;
3110 }
3111
3112 /* Try to emulate socket type flags after socket creation. */
3113 static int sock_flags_fixup(int fd, int target_type)
3114 {
3115 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3116 if (target_type & TARGET_SOCK_NONBLOCK) {
3117 int flags = fcntl(fd, F_GETFL);
3118 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3119 close(fd);
3120 return -TARGET_EINVAL;
3121 }
3122 }
3123 #endif
3124 return fd;
3125 }
3126
3127 /* do_socket() Must return target values and target errnos. */
3128 static abi_long do_socket(int domain, int type, int protocol)
3129 {
3130 int target_type = type;
3131 int ret;
3132
3133 ret = target_to_host_sock_type(&type);
3134 if (ret) {
3135 return ret;
3136 }
3137
3138 if (domain == PF_NETLINK && !(
3139 #ifdef CONFIG_RTNETLINK
3140 protocol == NETLINK_ROUTE ||
3141 #endif
3142 protocol == NETLINK_KOBJECT_UEVENT ||
3143 protocol == NETLINK_AUDIT)) {
3144 return -TARGET_EPROTONOSUPPORT;
3145 }
3146
3147 if (domain == AF_PACKET ||
3148 (domain == AF_INET && type == SOCK_PACKET)) {
3149 protocol = tswap16(protocol);
3150 }
3151
3152 ret = get_errno(socket(domain, type, protocol));
3153 if (ret >= 0) {
3154 ret = sock_flags_fixup(ret, target_type);
3155 if (type == SOCK_PACKET) {
3156 /* Manage an obsolete case :
3157 * if socket type is SOCK_PACKET, bind by name
3158 */
3159 fd_trans_register(ret, &target_packet_trans);
3160 } else if (domain == PF_NETLINK) {
3161 switch (protocol) {
3162 #ifdef CONFIG_RTNETLINK
3163 case NETLINK_ROUTE:
3164 fd_trans_register(ret, &target_netlink_route_trans);
3165 break;
3166 #endif
3167 case NETLINK_KOBJECT_UEVENT:
3168 /* nothing to do: messages are strings */
3169 break;
3170 case NETLINK_AUDIT:
3171 fd_trans_register(ret, &target_netlink_audit_trans);
3172 break;
3173 default:
3174 g_assert_not_reached();
3175 }
3176 }
3177 }
3178 return ret;
3179 }
3180
3181 /* do_bind() Must return target values and target errnos. */
3182 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3183 socklen_t addrlen)
3184 {
3185 void *addr;
3186 abi_long ret;
3187
3188 if ((int)addrlen < 0) {
3189 return -TARGET_EINVAL;
3190 }
3191
3192 addr = alloca(addrlen+1);
3193
3194 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3195 if (ret)
3196 return ret;
3197
3198 return get_errno(bind(sockfd, addr, addrlen));
3199 }
3200
3201 /* do_connect() Must return target values and target errnos. */
3202 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3203 socklen_t addrlen)
3204 {
3205 void *addr;
3206 abi_long ret;
3207
3208 if ((int)addrlen < 0) {
3209 return -TARGET_EINVAL;
3210 }
3211
3212 addr = alloca(addrlen+1);
3213
3214 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3215 if (ret)
3216 return ret;
3217
3218 return get_errno(safe_connect(sockfd, addr, addrlen));
3219 }
3220
3221 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3222 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3223 int flags, int send)
3224 {
3225 abi_long ret, len;
3226 struct msghdr msg;
3227 abi_ulong count;
3228 struct iovec *vec;
3229 abi_ulong target_vec;
3230
3231 if (msgp->msg_name) {
3232 msg.msg_namelen = tswap32(msgp->msg_namelen);
3233 msg.msg_name = alloca(msg.msg_namelen+1);
3234 ret = target_to_host_sockaddr(fd, msg.msg_name,
3235 tswapal(msgp->msg_name),
3236 msg.msg_namelen);
3237 if (ret == -TARGET_EFAULT) {
3238 /* For connected sockets msg_name and msg_namelen must
3239 * be ignored, so returning EFAULT immediately is wrong.
3240 * Instead, pass a bad msg_name to the host kernel, and
3241 * let it decide whether to return EFAULT or not.
3242 */
3243 msg.msg_name = (void *)-1;
3244 } else if (ret) {
3245 goto out2;
3246 }
3247 } else {
3248 msg.msg_name = NULL;
3249 msg.msg_namelen = 0;
3250 }
3251 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3252 msg.msg_control = alloca(msg.msg_controllen);
3253 memset(msg.msg_control, 0, msg.msg_controllen);
3254
3255 msg.msg_flags = tswap32(msgp->msg_flags);
3256
3257 count = tswapal(msgp->msg_iovlen);
3258 target_vec = tswapal(msgp->msg_iov);
3259
3260 if (count > IOV_MAX) {
3261 /* sendrcvmsg returns a different errno for this condition than
3262 * readv/writev, so we must catch it here before lock_iovec() does.
3263 */
3264 ret = -TARGET_EMSGSIZE;
3265 goto out2;
3266 }
3267
3268 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3269 target_vec, count, send);
3270 if (vec == NULL) {
3271 ret = -host_to_target_errno(errno);
3272 /* allow sending packet without any iov, e.g. with MSG_MORE flag */
3273 if (!send || ret) {
3274 goto out2;
3275 }
3276 }
3277 msg.msg_iovlen = count;
3278 msg.msg_iov = vec;
3279
3280 if (send) {
3281 if (fd_trans_target_to_host_data(fd)) {
3282 void *host_msg;
3283
3284 host_msg = g_malloc(msg.msg_iov->iov_len);
3285 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3286 ret = fd_trans_target_to_host_data(fd)(host_msg,
3287 msg.msg_iov->iov_len);
3288 if (ret >= 0) {
3289 msg.msg_iov->iov_base = host_msg;
3290 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3291 }
3292 g_free(host_msg);
3293 } else {
3294 ret = target_to_host_cmsg(&msg, msgp);
3295 if (ret == 0) {
3296 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3297 }
3298 }
3299 } else {
3300 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3301 if (!is_error(ret)) {
3302 len = ret;
3303 if (fd_trans_host_to_target_data(fd)) {
3304 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3305 MIN(msg.msg_iov->iov_len, len));
3306 }
3307 if (!is_error(ret)) {
3308 ret = host_to_target_cmsg(msgp, &msg);
3309 }
3310 if (!is_error(ret)) {
3311 msgp->msg_namelen = tswap32(msg.msg_namelen);
3312 msgp->msg_flags = tswap32(msg.msg_flags);
3313 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3314 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3315 msg.msg_name, msg.msg_namelen);
3316 if (ret) {
3317 goto out;
3318 }
3319 }
3320
3321 ret = len;
3322 }
3323 }
3324 }
3325
3326 out:
3327 if (vec) {
3328 unlock_iovec(vec, target_vec, count, !send);
3329 }
3330 out2:
3331 return ret;
3332 }
3333
3334 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3335 int flags, int send)
3336 {
3337 abi_long ret;
3338 struct target_msghdr *msgp;
3339
3340 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3341 msgp,
3342 target_msg,
3343 send ? 1 : 0)) {
3344 return -TARGET_EFAULT;
3345 }
3346 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3347 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3348 return ret;
3349 }
3350
3351 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3352 * so it might not have this *mmsg-specific flag either.
3353 */
3354 #ifndef MSG_WAITFORONE
3355 #define MSG_WAITFORONE 0x10000
3356 #endif
3357
3358 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3359 unsigned int vlen, unsigned int flags,
3360 int send)
3361 {
3362 struct target_mmsghdr *mmsgp;
3363 abi_long ret = 0;
3364 int i;
3365
3366 if (vlen > UIO_MAXIOV) {
3367 vlen = UIO_MAXIOV;
3368 }
3369
3370 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3371 if (!mmsgp) {
3372 return -TARGET_EFAULT;
3373 }
3374
3375 for (i = 0; i < vlen; i++) {
3376 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3377 if (is_error(ret)) {
3378 break;
3379 }
3380 mmsgp[i].msg_len = tswap32(ret);
3381 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3382 if (flags & MSG_WAITFORONE) {
3383 flags |= MSG_DONTWAIT;
3384 }
3385 }
3386
3387 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3388
3389 /* Return number of datagrams sent if we sent any at all;
3390 * otherwise return the error.
3391 */
3392 if (i) {
3393 return i;
3394 }
3395 return ret;
3396 }
3397
3398 /* do_accept4() Must return target values and target errnos. */
3399 static abi_long do_accept4(int fd, abi_ulong target_addr,
3400 abi_ulong target_addrlen_addr, int flags)
3401 {
3402 socklen_t addrlen, ret_addrlen;
3403 void *addr;
3404 abi_long ret;
3405 int host_flags;
3406
3407 if (flags & ~(TARGET_SOCK_CLOEXEC | TARGET_SOCK_NONBLOCK)) {
3408 return -TARGET_EINVAL;
3409 }
3410
3411 host_flags = 0;
3412 if (flags & TARGET_SOCK_NONBLOCK) {
3413 host_flags |= SOCK_NONBLOCK;
3414 }
3415 if (flags & TARGET_SOCK_CLOEXEC) {
3416 host_flags |= SOCK_CLOEXEC;
3417 }
3418
3419 if (target_addr == 0) {
3420 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3421 }
3422
3423 /* linux returns EFAULT if addrlen pointer is invalid */
3424 if (get_user_u32(addrlen, target_addrlen_addr))
3425 return -TARGET_EFAULT;
3426
3427 if ((int)addrlen < 0) {
3428 return -TARGET_EINVAL;
3429 }
3430
3431 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3432 return -TARGET_EFAULT;
3433 }
3434
3435 addr = alloca(addrlen);
3436
3437 ret_addrlen = addrlen;
3438 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3439 if (!is_error(ret)) {
3440 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3441 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3442 ret = -TARGET_EFAULT;
3443 }
3444 }
3445 return ret;
3446 }
3447
3448 /* do_getpeername() Must return target values and target errnos. */
3449 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3450 abi_ulong target_addrlen_addr)
3451 {
3452 socklen_t addrlen, ret_addrlen;
3453 void *addr;
3454 abi_long ret;
3455
3456 if (get_user_u32(addrlen, target_addrlen_addr))
3457 return -TARGET_EFAULT;
3458
3459 if ((int)addrlen < 0) {
3460 return -TARGET_EINVAL;
3461 }
3462
3463 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3464 return -TARGET_EFAULT;
3465 }
3466
3467 addr = alloca(addrlen);
3468
3469 ret_addrlen = addrlen;
3470 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3471 if (!is_error(ret)) {
3472 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3473 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3474 ret = -TARGET_EFAULT;
3475 }
3476 }
3477 return ret;
3478 }
3479
3480 /* do_getsockname() Must return target values and target errnos. */
3481 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3482 abi_ulong target_addrlen_addr)
3483 {
3484 socklen_t addrlen, ret_addrlen;
3485 void *addr;
3486 abi_long ret;
3487
3488 if (get_user_u32(addrlen, target_addrlen_addr))
3489 return -TARGET_EFAULT;
3490
3491 if ((int)addrlen < 0) {
3492 return -TARGET_EINVAL;
3493 }
3494
3495 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3496 return -TARGET_EFAULT;
3497 }
3498
3499 addr = alloca(addrlen);
3500
3501 ret_addrlen = addrlen;
3502 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3503 if (!is_error(ret)) {
3504 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3505 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3506 ret = -TARGET_EFAULT;
3507 }
3508 }
3509 return ret;
3510 }
3511
3512 /* do_socketpair() Must return target values and target errnos. */
3513 static abi_long do_socketpair(int domain, int type, int protocol,
3514 abi_ulong target_tab_addr)
3515 {
3516 int tab[2];
3517 abi_long ret;
3518
3519 target_to_host_sock_type(&type);
3520
3521 ret = get_errno(socketpair(domain, type, protocol, tab));
3522 if (!is_error(ret)) {
3523 if (put_user_s32(tab[0], target_tab_addr)
3524 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3525 ret = -TARGET_EFAULT;
3526 }
3527 return ret;
3528 }
3529
3530 /* do_sendto() Must return target values and target errnos. */
3531 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3532 abi_ulong target_addr, socklen_t addrlen)
3533 {
3534 void *addr;
3535 void *host_msg;
3536 void *copy_msg = NULL;
3537 abi_long ret;
3538
3539 if ((int)addrlen < 0) {
3540 return -TARGET_EINVAL;
3541 }
3542
3543 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3544 if (!host_msg)
3545 return -TARGET_EFAULT;
3546 if (fd_trans_target_to_host_data(fd)) {
3547 copy_msg = host_msg;
3548 host_msg = g_malloc(len);
3549 memcpy(host_msg, copy_msg, len);
3550 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3551 if (ret < 0) {
3552 goto fail;
3553 }
3554 }
3555 if (target_addr) {
3556 addr = alloca(addrlen+1);
3557 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3558 if (ret) {
3559 goto fail;
3560 }
3561 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3562 } else {
3563 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3564 }
3565 fail:
3566 if (copy_msg) {
3567 g_free(host_msg);
3568 host_msg = copy_msg;
3569 }
3570 unlock_user(host_msg, msg, 0);
3571 return ret;
3572 }
3573
3574 /* do_recvfrom() Must return target values and target errnos. */
3575 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3576 abi_ulong target_addr,
3577 abi_ulong target_addrlen)
3578 {
3579 socklen_t addrlen, ret_addrlen;
3580 void *addr;
3581 void *host_msg;
3582 abi_long ret;
3583
3584 if (!msg) {
3585 host_msg = NULL;
3586 } else {
3587 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3588 if (!host_msg) {
3589 return -TARGET_EFAULT;
3590 }
3591 }
3592 if (target_addr) {
3593 if (get_user_u32(addrlen, target_addrlen)) {
3594 ret = -TARGET_EFAULT;
3595 goto fail;
3596 }
3597 if ((int)addrlen < 0) {
3598 ret = -TARGET_EINVAL;
3599 goto fail;
3600 }
3601 addr = alloca(addrlen);
3602 ret_addrlen = addrlen;
3603 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3604 addr, &ret_addrlen));
3605 } else {
3606 addr = NULL; /* To keep compiler quiet. */
3607 addrlen = 0; /* To keep compiler quiet. */
3608 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3609 }
3610 if (!is_error(ret)) {
3611 if (fd_trans_host_to_target_data(fd)) {
3612 abi_long trans;
3613 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3614 if (is_error(trans)) {
3615 ret = trans;
3616 goto fail;
3617 }
3618 }
3619 if (target_addr) {
3620 host_to_target_sockaddr(target_addr, addr,
3621 MIN(addrlen, ret_addrlen));
3622 if (put_user_u32(ret_addrlen, target_addrlen)) {
3623 ret = -TARGET_EFAULT;
3624 goto fail;
3625 }
3626 }
3627 unlock_user(host_msg, msg, len);
3628 } else {
3629 fail:
3630 unlock_user(host_msg, msg, 0);
3631 }
3632 return ret;
3633 }
3634
3635 #ifdef TARGET_NR_socketcall
3636 /* do_socketcall() must return target values and target errnos. */
3637 static abi_long do_socketcall(int num, abi_ulong vptr)
3638 {
3639 static const unsigned nargs[] = { /* number of arguments per operation */
3640 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3641 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3642 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3643 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3644 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3645 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3646 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3647 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3648 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3649 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3650 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3651 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3652 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3653 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3654 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3655 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3656 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3657 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3658 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3659 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3660 };
3661 abi_long a[6]; /* max 6 args */
3662 unsigned i;
3663
3664 /* check the range of the first argument num */
3665 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3666 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3667 return -TARGET_EINVAL;
3668 }
3669 /* ensure we have space for args */
3670 if (nargs[num] > ARRAY_SIZE(a)) {
3671 return -TARGET_EINVAL;
3672 }
3673 /* collect the arguments in a[] according to nargs[] */
3674 for (i = 0; i < nargs[num]; ++i) {
3675 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3676 return -TARGET_EFAULT;
3677 }
3678 }
3679 /* now when we have the args, invoke the appropriate underlying function */
3680 switch (num) {
3681 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3682 return do_socket(a[0], a[1], a[2]);
3683 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3684 return do_bind(a[0], a[1], a[2]);
3685 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3686 return do_connect(a[0], a[1], a[2]);
3687 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3688 return get_errno(listen(a[0], a[1]));
3689 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3690 return do_accept4(a[0], a[1], a[2], 0);
3691 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3692 return do_getsockname(a[0], a[1], a[2]);
3693 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3694 return do_getpeername(a[0], a[1], a[2]);
3695 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3696 return do_socketpair(a[0], a[1], a[2], a[3]);
3697 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3698 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3699 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3700 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3701 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3702 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3703 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3704 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3705 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3706 return get_errno(shutdown(a[0], a[1]));
3707 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3708 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3709 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3710 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3711 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3712 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3713 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3714 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3715 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3716 return do_accept4(a[0], a[1], a[2], a[3]);
3717 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3718 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3719 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3720 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3721 default:
3722 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
3723 return -TARGET_EINVAL;
3724 }
3725 }
3726 #endif
3727
3728 #ifndef TARGET_SEMID64_DS
3729 /* asm-generic version of this struct */
3730 struct target_semid64_ds
3731 {
3732 struct target_ipc_perm sem_perm;
3733 abi_ulong sem_otime;
3734 #if TARGET_ABI_BITS == 32
3735 abi_ulong __unused1;
3736 #endif
3737 abi_ulong sem_ctime;
3738 #if TARGET_ABI_BITS == 32
3739 abi_ulong __unused2;
3740 #endif
3741 abi_ulong sem_nsems;
3742 abi_ulong __unused3;
3743 abi_ulong __unused4;
3744 };
3745 #endif
3746
3747 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3748 abi_ulong target_addr)
3749 {
3750 struct target_ipc_perm *target_ip;
3751 struct target_semid64_ds *target_sd;
3752
3753 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3754 return -TARGET_EFAULT;
3755 target_ip = &(target_sd->sem_perm);
3756 host_ip->__key = tswap32(target_ip->__key);
3757 host_ip->uid = tswap32(target_ip->uid);
3758 host_ip->gid = tswap32(target_ip->gid);
3759 host_ip->cuid = tswap32(target_ip->cuid);
3760 host_ip->cgid = tswap32(target_ip->cgid);
3761 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3762 host_ip->mode = tswap32(target_ip->mode);
3763 #else
3764 host_ip->mode = tswap16(target_ip->mode);
3765 #endif
3766 #if defined(TARGET_PPC)
3767 host_ip->__seq = tswap32(target_ip->__seq);
3768 #else
3769 host_ip->__seq = tswap16(target_ip->__seq);
3770 #endif
3771 unlock_user_struct(target_sd, target_addr, 0);
3772 return 0;
3773 }
3774
3775 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3776 struct ipc_perm *host_ip)
3777 {
3778 struct target_ipc_perm *target_ip;
3779 struct target_semid64_ds *target_sd;
3780
3781 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3782 return -TARGET_EFAULT;
3783 target_ip = &(target_sd->sem_perm);
3784 target_ip->__key = tswap32(host_ip->__key);
3785 target_ip->uid = tswap32(host_ip->uid);
3786 target_ip->gid = tswap32(host_ip->gid);
3787 target_ip->cuid = tswap32(host_ip->cuid);
3788 target_ip->cgid = tswap32(host_ip->cgid);
3789 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3790 target_ip->mode = tswap32(host_ip->mode);
3791 #else
3792 target_ip->mode = tswap16(host_ip->mode);
3793 #endif
3794 #if defined(TARGET_PPC)
3795 target_ip->__seq = tswap32(host_ip->__seq);
3796 #else
3797 target_ip->__seq = tswap16(host_ip->__seq);
3798 #endif
3799 unlock_user_struct(target_sd, target_addr, 1);
3800 return 0;
3801 }
3802
3803 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3804 abi_ulong target_addr)
3805 {
3806 struct target_semid64_ds *target_sd;
3807
3808 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3809 return -TARGET_EFAULT;
3810 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3811 return -TARGET_EFAULT;
3812 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3813 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3814 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3815 unlock_user_struct(target_sd, target_addr, 0);
3816 return 0;
3817 }
3818
3819 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3820 struct semid_ds *host_sd)
3821 {
3822 struct target_semid64_ds *target_sd;
3823
3824 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3825 return -TARGET_EFAULT;
3826 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3827 return -TARGET_EFAULT;
3828 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3829 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3830 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3831 unlock_user_struct(target_sd, target_addr, 1);
3832 return 0;
3833 }
3834
3835 struct target_seminfo {
3836 int semmap;
3837 int semmni;
3838 int semmns;
3839 int semmnu;
3840 int semmsl;
3841 int semopm;
3842 int semume;
3843 int semusz;
3844 int semvmx;
3845 int semaem;
3846 };
3847
3848 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3849 struct seminfo *host_seminfo)
3850 {
3851 struct target_seminfo *target_seminfo;
3852 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3853 return -TARGET_EFAULT;
3854 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3855 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3856 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3857 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3858 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3859 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3860 __put_user(host_seminfo->semume, &target_seminfo->semume);
3861 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3862 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3863 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3864 unlock_user_struct(target_seminfo, target_addr, 1);
3865 return 0;
3866 }
3867
3868 union semun {
3869 int val;
3870 struct semid_ds *buf;
3871 unsigned short *array;
3872 struct seminfo *__buf;
3873 };
3874
3875 union target_semun {
3876 int val;
3877 abi_ulong buf;
3878 abi_ulong array;
3879 abi_ulong __buf;
3880 };
3881
3882 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3883 abi_ulong target_addr)
3884 {
3885 int nsems;
3886 unsigned short *array;
3887 union semun semun;
3888 struct semid_ds semid_ds;
3889 int i, ret;
3890
3891 semun.buf = &semid_ds;
3892
3893 ret = semctl(semid, 0, IPC_STAT, semun);
3894 if (ret == -1)
3895 return get_errno(ret);
3896
3897 nsems = semid_ds.sem_nsems;
3898
3899 *host_array = g_try_new(unsigned short, nsems);
3900 if (!*host_array) {
3901 return -TARGET_ENOMEM;
3902 }
3903 array = lock_user(VERIFY_READ, target_addr,
3904 nsems*sizeof(unsigned short), 1);
3905 if (!array) {
3906 g_free(*host_array);
3907 return -TARGET_EFAULT;
3908 }
3909
3910 for(i=0; i<nsems; i++) {
3911 __get_user((*host_array)[i], &array[i]);
3912 }
3913 unlock_user(array, target_addr, 0);
3914
3915 return 0;
3916 }
3917
3918 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3919 unsigned short **host_array)
3920 {
3921 int nsems;
3922 unsigned short *array;
3923 union semun semun;
3924 struct semid_ds semid_ds;
3925 int i, ret;
3926
3927 semun.buf = &semid_ds;
3928
3929 ret = semctl(semid, 0, IPC_STAT, semun);
3930 if (ret == -1)
3931 return get_errno(ret);
3932
3933 nsems = semid_ds.sem_nsems;
3934
3935 array = lock_user(VERIFY_WRITE, target_addr,
3936 nsems*sizeof(unsigned short), 0);
3937 if (!array)
3938 return -TARGET_EFAULT;
3939
3940 for(i=0; i<nsems; i++) {
3941 __put_user((*host_array)[i], &array[i]);
3942 }
3943 g_free(*host_array);
3944 unlock_user(array, target_addr, 1);
3945
3946 return 0;
3947 }
3948
3949 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3950 abi_ulong target_arg)
3951 {
3952 union target_semun target_su = { .buf = target_arg };
3953 union semun arg;
3954 struct semid_ds dsarg;
3955 unsigned short *array = NULL;
3956 struct seminfo seminfo;
3957 abi_long ret = -TARGET_EINVAL;
3958 abi_long err;
3959 cmd &= 0xff;
3960
3961 switch( cmd ) {
3962 case GETVAL:
3963 case SETVAL:
3964 /* In 64 bit cross-endian situations, we will erroneously pick up
3965 * the wrong half of the union for the "val" element. To rectify
3966 * this, the entire 8-byte structure is byteswapped, followed by
3967 * a swap of the 4 byte val field. In other cases, the data is
3968 * already in proper host byte order. */
3969 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
3970 target_su.buf = tswapal(target_su.buf);
3971 arg.val = tswap32(target_su.val);
3972 } else {
3973 arg.val = target_su.val;
3974 }
3975 ret = get_errno(semctl(semid, semnum, cmd, arg));
3976 break;
3977 case GETALL:
3978 case SETALL:
3979 err = target_to_host_semarray(semid, &array, target_su.array);
3980 if (err)
3981 return err;
3982 arg.array = array;
3983 ret = get_errno(semctl(semid, semnum, cmd, arg));
3984 err = host_to_target_semarray(semid, target_su.array, &array);
3985 if (err)
3986 return err;
3987 break;
3988 case IPC_STAT:
3989 case IPC_SET:
3990 case SEM_STAT:
3991 err = target_to_host_semid_ds(&dsarg, target_su.buf);
3992 if (err)
3993 return err;
3994 arg.buf = &dsarg;
3995 ret = get_errno(semctl(semid, semnum, cmd, arg));
3996 err = host_to_target_semid_ds(target_su.buf, &dsarg);
3997 if (err)
3998 return err;
3999 break;
4000 case IPC_INFO:
4001 case SEM_INFO:
4002 arg.__buf = &seminfo;
4003 ret = get_errno(semctl(semid, semnum, cmd, arg));
4004 err = host_to_target_seminfo(target_su.__buf, &seminfo);
4005 if (err)
4006 return err;
4007 break;
4008 case IPC_RMID:
4009 case GETPID:
4010 case GETNCNT:
4011 case GETZCNT:
4012 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4013 break;
4014 }
4015
4016 return ret;
4017 }
4018
4019 struct target_sembuf {
4020 unsigned short sem_num;
4021 short sem_op;
4022 short sem_flg;
4023 };
4024
4025 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4026 abi_ulong target_addr,
4027 unsigned nsops)
4028 {
4029 struct target_sembuf *target_sembuf;
4030 int i;
4031
4032 target_sembuf = lock_user(VERIFY_READ, target_addr,
4033 nsops*sizeof(struct target_sembuf), 1);
4034 if (!target_sembuf)
4035 return -TARGET_EFAULT;
4036
4037 for(i=0; i<nsops; i++) {
4038 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4039 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4040 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4041 }
4042
4043 unlock_user(target_sembuf, target_addr, 0);
4044
4045 return 0;
4046 }
4047
4048 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \
4049 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64)
4050
4051 /*
4052 * This macro is required to handle the s390 variants, which passes the
4053 * arguments in a different order than default.
4054 */
4055 #ifdef __s390x__
4056 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4057 (__nsops), (__timeout), (__sops)
4058 #else
4059 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4060 (__nsops), 0, (__sops), (__timeout)
4061 #endif
4062
4063 static inline abi_long do_semtimedop(int semid,
4064 abi_long ptr,
4065 unsigned nsops,
4066 abi_long timeout, bool time64)
4067 {
4068 struct sembuf *sops;
4069 struct timespec ts, *pts = NULL;
4070 abi_long ret;
4071
4072 if (timeout) {
4073 pts = &ts;
4074 if (time64) {
4075 if (target_to_host_timespec64(pts, timeout)) {
4076 return -TARGET_EFAULT;
4077 }
4078 } else {
4079 if (target_to_host_timespec(pts, timeout)) {
4080 return -TARGET_EFAULT;
4081 }
4082 }
4083 }
4084
4085 if (nsops > TARGET_SEMOPM) {
4086 return -TARGET_E2BIG;
4087 }
4088
4089 sops = g_new(struct sembuf, nsops);
4090
4091 if (target_to_host_sembuf(sops, ptr, nsops)) {
4092 g_free(sops);
4093 return -TARGET_EFAULT;
4094 }
4095
4096 ret = -TARGET_ENOSYS;
4097 #ifdef __NR_semtimedop
4098 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
4099 #endif
4100 #ifdef __NR_ipc
4101 if (ret == -TARGET_ENOSYS) {
4102 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid,
4103 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts)));
4104 }
4105 #endif
4106 g_free(sops);
4107 return ret;
4108 }
4109 #endif
4110
4111 struct target_msqid_ds
4112 {
4113 struct target_ipc_perm msg_perm;
4114 abi_ulong msg_stime;
4115 #if TARGET_ABI_BITS == 32
4116 abi_ulong __unused1;
4117 #endif
4118 abi_ulong msg_rtime;
4119 #if TARGET_ABI_BITS == 32
4120 abi_ulong __unused2;
4121 #endif
4122 abi_ulong msg_ctime;
4123 #if TARGET_ABI_BITS == 32
4124 abi_ulong __unused3;
4125 #endif
4126 abi_ulong __msg_cbytes;
4127 abi_ulong msg_qnum;
4128 abi_ulong msg_qbytes;
4129 abi_ulong msg_lspid;
4130 abi_ulong msg_lrpid;
4131 abi_ulong __unused4;
4132 abi_ulong __unused5;
4133 };
4134
4135 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4136 abi_ulong target_addr)
4137 {
4138 struct target_msqid_ds *target_md;
4139
4140 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4141 return -TARGET_EFAULT;
4142 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4143 return -TARGET_EFAULT;
4144 host_md->msg_stime = tswapal(target_md->msg_stime);
4145 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4146 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4147 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4148 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4149 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4150 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4151 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4152 unlock_user_struct(target_md, target_addr, 0);
4153 return 0;
4154 }
4155
4156 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4157 struct msqid_ds *host_md)
4158 {
4159 struct target_msqid_ds *target_md;
4160
4161 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4162 return -TARGET_EFAULT;
4163 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4164 return -TARGET_EFAULT;
4165 target_md->msg_stime = tswapal(host_md->msg_stime);
4166 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4167 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4168 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4169 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4170 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4171 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4172 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4173 unlock_user_struct(target_md, target_addr, 1);
4174 return 0;
4175 }
4176
4177 struct target_msginfo {
4178 int msgpool;
4179 int msgmap;
4180 int msgmax;
4181 int msgmnb;
4182 int msgmni;
4183 int msgssz;
4184 int msgtql;
4185 unsigned short int msgseg;
4186 };
4187
4188 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4189 struct msginfo *host_msginfo)
4190 {
4191 struct target_msginfo *target_msginfo;
4192 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4193 return -TARGET_EFAULT;
4194 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4195 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4196 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4197 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4198 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4199 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4200 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4201 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4202 unlock_user_struct(target_msginfo, target_addr, 1);
4203 return 0;
4204 }
4205
4206 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4207 {
4208 struct msqid_ds dsarg;
4209 struct msginfo msginfo;
4210 abi_long ret = -TARGET_EINVAL;
4211
4212 cmd &= 0xff;
4213
4214 switch (cmd) {
4215 case IPC_STAT:
4216 case IPC_SET:
4217 case MSG_STAT:
4218 if (target_to_host_msqid_ds(&dsarg,ptr))
4219 return -TARGET_EFAULT;
4220 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4221 if (host_to_target_msqid_ds(ptr,&dsarg))
4222 return -TARGET_EFAULT;
4223 break;
4224 case IPC_RMID:
4225 ret = get_errno(msgctl(msgid, cmd, NULL));
4226 break;
4227 case IPC_INFO:
4228 case MSG_INFO:
4229 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4230 if (host_to_target_msginfo(ptr, &msginfo))
4231 return -TARGET_EFAULT;
4232 break;
4233 }
4234
4235 return ret;
4236 }
4237
4238 struct target_msgbuf {
4239 abi_long mtype;
4240 char mtext[1];
4241 };
4242
4243 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4244 ssize_t msgsz, int msgflg)
4245 {
4246 struct target_msgbuf *target_mb;
4247 struct msgbuf *host_mb;
4248 abi_long ret = 0;
4249
4250 if (msgsz < 0) {
4251 return -TARGET_EINVAL;
4252 }
4253
4254 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4255 return -TARGET_EFAULT;
4256 host_mb = g_try_malloc(msgsz + sizeof(long));
4257 if (!host_mb) {
4258 unlock_user_struct(target_mb, msgp, 0);
4259 return -TARGET_ENOMEM;
4260 }
4261 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4262 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4263 ret = -TARGET_ENOSYS;
4264 #ifdef __NR_msgsnd
4265 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4266 #endif
4267 #ifdef __NR_ipc
4268 if (ret == -TARGET_ENOSYS) {
4269 #ifdef __s390x__
4270 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4271 host_mb));
4272 #else
4273 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4274 host_mb, 0));
4275 #endif
4276 }
4277 #endif
4278 g_free(host_mb);
4279 unlock_user_struct(target_mb, msgp, 0);
4280
4281 return ret;
4282 }
4283
4284 #ifdef __NR_ipc
4285 #if defined(__sparc__)
4286 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */
4287 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp
4288 #elif defined(__s390x__)
4289 /* The s390 sys_ipc variant has only five parameters. */
4290 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4291 ((long int[]){(long int)__msgp, __msgtyp})
4292 #else
4293 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4294 ((long int[]){(long int)__msgp, __msgtyp}), 0
4295 #endif
4296 #endif
4297
4298 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4299 ssize_t msgsz, abi_long msgtyp,
4300 int msgflg)
4301 {
4302 struct target_msgbuf *target_mb;
4303 char *target_mtext;
4304 struct msgbuf *host_mb;
4305 abi_long ret = 0;
4306
4307 if (msgsz < 0) {
4308 return -TARGET_EINVAL;
4309 }
4310
4311 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4312 return -TARGET_EFAULT;
4313
4314 host_mb = g_try_malloc(msgsz + sizeof(long));
4315 if (!host_mb) {
4316 ret = -TARGET_ENOMEM;
4317 goto end;
4318 }
4319 ret = -TARGET_ENOSYS;
4320 #ifdef __NR_msgrcv
4321 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4322 #endif
4323 #ifdef __NR_ipc
4324 if (ret == -TARGET_ENOSYS) {
4325 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
4326 msgflg, MSGRCV_ARGS(host_mb, msgtyp)));
4327 }
4328 #endif
4329
4330 if (ret > 0) {
4331 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4332 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4333 if (!target_mtext) {
4334 ret = -TARGET_EFAULT;
4335 goto end;
4336 }
4337 memcpy(target_mb->mtext, host_mb->mtext, ret);
4338 unlock_user(target_mtext, target_mtext_addr, ret);
4339 }
4340
4341 target_mb->mtype = tswapal(host_mb->mtype);
4342
4343 end:
4344 if (target_mb)
4345 unlock_user_struct(target_mb, msgp, 1);
4346 g_free(host_mb);
4347 return ret;
4348 }
4349
4350 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4351 abi_ulong target_addr)
4352 {
4353 struct target_shmid_ds *target_sd;
4354
4355 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4356 return -TARGET_EFAULT;
4357 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4358 return -TARGET_EFAULT;
4359 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4360 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4361 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4362 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4363 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4364 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4365 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4366 unlock_user_struct(target_sd, target_addr, 0);
4367 return 0;
4368 }
4369
4370 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4371 struct shmid_ds *host_sd)
4372 {
4373 struct target_shmid_ds *target_sd;
4374
4375 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4376 return -TARGET_EFAULT;
4377 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4378 return -TARGET_EFAULT;
4379 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4380 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4381 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4382 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4383 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4384 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4385 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4386 unlock_user_struct(target_sd, target_addr, 1);
4387 return 0;
4388 }
4389
4390 struct target_shminfo {
4391 abi_ulong shmmax;
4392 abi_ulong shmmin;
4393 abi_ulong shmmni;
4394 abi_ulong shmseg;
4395 abi_ulong shmall;
4396 };
4397
4398 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4399 struct shminfo *host_shminfo)
4400 {
4401 struct target_shminfo *target_shminfo;
4402 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4403 return -TARGET_EFAULT;
4404 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4405 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4406 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4407 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4408 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4409 unlock_user_struct(target_shminfo, target_addr, 1);
4410 return 0;
4411 }
4412
4413 struct target_shm_info {
4414 int used_ids;
4415 abi_ulong shm_tot;
4416 abi_ulong shm_rss;
4417 abi_ulong shm_swp;
4418 abi_ulong swap_attempts;
4419 abi_ulong swap_successes;
4420 };
4421
4422 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4423 struct shm_info *host_shm_info)
4424 {
4425 struct target_shm_info *target_shm_info;
4426 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4427 return -TARGET_EFAULT;
4428 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4429 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4430 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4431 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4432 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4433 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4434 unlock_user_struct(target_shm_info, target_addr, 1);
4435 return 0;
4436 }
4437
4438 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4439 {
4440 struct shmid_ds dsarg;
4441 struct shminfo shminfo;
4442 struct shm_info shm_info;
4443 abi_long ret = -TARGET_EINVAL;
4444
4445 cmd &= 0xff;
4446
4447 switch(cmd) {
4448 case IPC_STAT:
4449 case IPC_SET:
4450 case SHM_STAT:
4451 if (target_to_host_shmid_ds(&dsarg, buf))
4452 return -TARGET_EFAULT;
4453 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4454 if (host_to_target_shmid_ds(buf, &dsarg))
4455 return -TARGET_EFAULT;
4456 break;
4457 case IPC_INFO:
4458 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4459 if (host_to_target_shminfo(buf, &shminfo))
4460 return -TARGET_EFAULT;
4461 break;
4462 case SHM_INFO:
4463 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4464 if (host_to_target_shm_info(buf, &shm_info))
4465 return -TARGET_EFAULT;
4466 break;
4467 case IPC_RMID:
4468 case SHM_LOCK:
4469 case SHM_UNLOCK:
4470 ret = get_errno(shmctl(shmid, cmd, NULL));
4471 break;
4472 }
4473
4474 return ret;
4475 }
4476
4477 #ifdef TARGET_NR_ipc
4478 /* ??? This only works with linear mappings. */
4479 /* do_ipc() must return target values and target errnos. */
4480 static abi_long do_ipc(CPUArchState *cpu_env,
4481 unsigned int call, abi_long first,
4482 abi_long second, abi_long third,
4483 abi_long ptr, abi_long fifth)
4484 {
4485 int version;
4486 abi_long ret = 0;
4487
4488 version = call >> 16;
4489 call &= 0xffff;
4490
4491 switch (call) {
4492 case IPCOP_semop:
4493 ret = do_semtimedop(first, ptr, second, 0, false);
4494 break;
4495 case IPCOP_semtimedop:
4496 /*
4497 * The s390 sys_ipc variant has only five parameters instead of six
4498 * (as for default variant) and the only difference is the handling of
4499 * SEMTIMEDOP where on s390 the third parameter is used as a pointer
4500 * to a struct timespec where the generic variant uses fifth parameter.
4501 */
4502 #if defined(TARGET_S390X)
4503 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64);
4504 #else
4505 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64);
4506 #endif
4507 break;
4508
4509 case IPCOP_semget:
4510 ret = get_errno(semget(first, second, third));
4511 break;
4512
4513 case IPCOP_semctl: {
4514 /* The semun argument to semctl is passed by value, so dereference the
4515 * ptr argument. */
4516 abi_ulong atptr;
4517 get_user_ual(atptr, ptr);
4518 ret = do_semctl(first, second, third, atptr);
4519 break;
4520 }
4521
4522 case IPCOP_msgget:
4523 ret = get_errno(msgget(first, second));
4524 break;
4525
4526 case IPCOP_msgsnd:
4527 ret = do_msgsnd(first, ptr, second, third);
4528 break;
4529
4530 case IPCOP_msgctl:
4531 ret = do_msgctl(first, second, ptr);
4532 break;
4533
4534 case IPCOP_msgrcv:
4535 switch (version) {
4536 case 0:
4537 {
4538 struct target_ipc_kludge {
4539 abi_long msgp;
4540 abi_long msgtyp;
4541 } *tmp;
4542
4543 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4544 ret = -TARGET_EFAULT;
4545 break;
4546 }
4547
4548 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4549
4550 unlock_user_struct(tmp, ptr, 0);
4551 break;
4552 }
4553 default:
4554 ret = do_msgrcv(first, ptr, second, fifth, third);
4555 }
4556 break;
4557
4558 case IPCOP_shmat:
4559 switch (version) {
4560 default:
4561 {
4562 abi_ulong raddr;
4563 raddr = target_shmat(cpu_env, first, ptr, second);
4564 if (is_error(raddr))
4565 return get_errno(raddr);
4566 if (put_user_ual(raddr, third))
4567 return -TARGET_EFAULT;
4568 break;
4569 }
4570 case 1:
4571 ret = -TARGET_EINVAL;
4572 break;
4573 }
4574 break;
4575 case IPCOP_shmdt:
4576 ret = target_shmdt(ptr);
4577 break;
4578
4579 case IPCOP_shmget:
4580 /* IPC_* flag values are the same on all linux platforms */
4581 ret = get_errno(shmget(first, second, third));
4582 break;
4583
4584 /* IPC_* and SHM_* command values are the same on all linux platforms */
4585 case IPCOP_shmctl:
4586 ret = do_shmctl(first, second, ptr);
4587 break;
4588 default:
4589 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
4590 call, version);
4591 ret = -TARGET_ENOSYS;
4592 break;
4593 }
4594 return ret;
4595 }
4596 #endif
4597
4598 /* kernel structure types definitions */
4599
4600 #define STRUCT(name, ...) STRUCT_ ## name,
4601 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4602 enum {
4603 #include "syscall_types.h"
4604 STRUCT_MAX
4605 };
4606 #undef STRUCT
4607 #undef STRUCT_SPECIAL
4608
4609 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4610 #define STRUCT_SPECIAL(name)
4611 #include "syscall_types.h"
4612 #undef STRUCT
4613 #undef STRUCT_SPECIAL
4614
4615 #define MAX_STRUCT_SIZE 4096
4616
4617 #ifdef CONFIG_FIEMAP
4618 /* So fiemap access checks don't overflow on 32 bit systems.
4619 * This is very slightly smaller than the limit imposed by
4620 * the underlying kernel.
4621 */
4622 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4623 / sizeof(struct fiemap_extent))
4624
4625 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4626 int fd, int cmd, abi_long arg)
4627 {
4628 /* The parameter for this ioctl is a struct fiemap followed
4629 * by an array of struct fiemap_extent whose size is set
4630 * in fiemap->fm_extent_count. The array is filled in by the
4631 * ioctl.
4632 */
4633 int target_size_in, target_size_out;
4634 struct fiemap *fm;
4635 const argtype *arg_type = ie->arg_type;
4636 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4637 void *argptr, *p;
4638 abi_long ret;
4639 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4640 uint32_t outbufsz;
4641 int free_fm = 0;
4642
4643 assert(arg_type[0] == TYPE_PTR);
4644 assert(ie->access == IOC_RW);
4645 arg_type++;
4646 target_size_in = thunk_type_size(arg_type, 0);
4647 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4648 if (!argptr) {
4649 return -TARGET_EFAULT;
4650 }
4651 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4652 unlock_user(argptr, arg, 0);
4653 fm = (struct fiemap *)buf_temp;
4654 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4655 return -TARGET_EINVAL;
4656 }
4657
4658 outbufsz = sizeof (*fm) +
4659 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4660
4661 if (outbufsz > MAX_STRUCT_SIZE) {
4662 /* We can't fit all the extents into the fixed size buffer.
4663 * Allocate one that is large enough and use it instead.
4664 */
4665 fm = g_try_malloc(outbufsz);
4666 if (!fm) {
4667 return -TARGET_ENOMEM;
4668 }
4669 memcpy(fm, buf_temp, sizeof(struct fiemap));
4670 free_fm = 1;
4671 }
4672 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4673 if (!is_error(ret)) {
4674 target_size_out = target_size_in;
4675 /* An extent_count of 0 means we were only counting the extents
4676 * so there are no structs to copy
4677 */
4678 if (fm->fm_extent_count != 0) {
4679 target_size_out += fm->fm_mapped_extents * extent_size;
4680 }
4681 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4682 if (!argptr) {
4683 ret = -TARGET_EFAULT;
4684 } else {
4685 /* Convert the struct fiemap */
4686 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4687 if (fm->fm_extent_count != 0) {
4688 p = argptr + target_size_in;
4689 /* ...and then all the struct fiemap_extents */
4690 for (i = 0; i < fm->fm_mapped_extents; i++) {
4691 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4692 THUNK_TARGET);
4693 p += extent_size;
4694 }
4695 }
4696 unlock_user(argptr, arg, target_size_out);
4697 }
4698 }
4699 if (free_fm) {
4700 g_free(fm);
4701 }
4702 return ret;
4703 }
4704 #endif
4705
4706 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4707 int fd, int cmd, abi_long arg)
4708 {
4709 const argtype *arg_type = ie->arg_type;
4710 int target_size;
4711 void *argptr;
4712 int ret;
4713 struct ifconf *host_ifconf;
4714 uint32_t outbufsz;
4715 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4716 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) };
4717 int target_ifreq_size;
4718 int nb_ifreq;
4719 int free_buf = 0;
4720 int i;
4721 int target_ifc_len;
4722 abi_long target_ifc_buf;
4723 int host_ifc_len;
4724 char *host_ifc_buf;
4725
4726 assert(arg_type[0] == TYPE_PTR);
4727 assert(ie->access == IOC_RW);
4728
4729 arg_type++;
4730 target_size = thunk_type_size(arg_type, 0);
4731
4732 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4733 if (!argptr)
4734 return -TARGET_EFAULT;
4735 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4736 unlock_user(argptr, arg, 0);
4737
4738 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4739 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4740 target_ifreq_size = thunk_type_size(ifreq_max_type, 0);
4741
4742 if (target_ifc_buf != 0) {
4743 target_ifc_len = host_ifconf->ifc_len;
4744 nb_ifreq = target_ifc_len / target_ifreq_size;
4745 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4746
4747 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4748 if (outbufsz > MAX_STRUCT_SIZE) {
4749 /*
4750 * We can't fit all the extents into the fixed size buffer.
4751 * Allocate one that is large enough and use it instead.
4752 */
4753 host_ifconf = g_try_malloc(outbufsz);
4754 if (!host_ifconf) {
4755 return -TARGET_ENOMEM;
4756 }
4757 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4758 free_buf = 1;
4759 }
4760 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4761
4762 host_ifconf->ifc_len = host_ifc_len;
4763 } else {
4764 host_ifc_buf = NULL;
4765 }
4766 host_ifconf->ifc_buf = host_ifc_buf;
4767
4768 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4769 if (!is_error(ret)) {
4770 /* convert host ifc_len to target ifc_len */
4771
4772 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4773 target_ifc_len = nb_ifreq * target_ifreq_size;
4774 host_ifconf->ifc_len = target_ifc_len;
4775
4776 /* restore target ifc_buf */
4777
4778 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4779
4780 /* copy struct ifconf to target user */
4781
4782 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4783 if (!argptr)
4784 return -TARGET_EFAULT;
4785 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4786 unlock_user(argptr, arg, target_size);
4787
4788 if (target_ifc_buf != 0) {
4789 /* copy ifreq[] to target user */
4790 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4791 for (i = 0; i < nb_ifreq ; i++) {
4792 thunk_convert(argptr + i * target_ifreq_size,
4793 host_ifc_buf + i * sizeof(struct ifreq),
4794 ifreq_arg_type, THUNK_TARGET);
4795 }
4796 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4797 }
4798 }
4799
4800 if (free_buf) {
4801 g_free(host_ifconf);
4802 }
4803
4804 return ret;
4805 }
4806
4807 #if defined(CONFIG_USBFS)
4808 #if HOST_LONG_BITS > 64
4809 #error USBDEVFS thunks do not support >64 bit hosts yet.
4810 #endif
4811 struct live_urb {
4812 uint64_t target_urb_adr;
4813 uint64_t target_buf_adr;
4814 char *target_buf_ptr;
4815 struct usbdevfs_urb host_urb;
4816 };
4817
4818 static GHashTable *usbdevfs_urb_hashtable(void)
4819 {
4820 static GHashTable *urb_hashtable;
4821
4822 if (!urb_hashtable) {
4823 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4824 }
4825 return urb_hashtable;
4826 }
4827
4828 static void urb_hashtable_insert(struct live_urb *urb)
4829 {
4830 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4831 g_hash_table_insert(urb_hashtable, urb, urb);
4832 }
4833
4834 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4835 {
4836 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4837 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
4838 }
4839
4840 static void urb_hashtable_remove(struct live_urb *urb)
4841 {
4842 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4843 g_hash_table_remove(urb_hashtable, urb);
4844 }
4845
4846 static abi_long
4847 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
4848 int fd, int cmd, abi_long arg)
4849 {
4850 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
4851 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
4852 struct live_urb *lurb;
4853 void *argptr;
4854 uint64_t hurb;
4855 int target_size;
4856 uintptr_t target_urb_adr;
4857 abi_long ret;
4858
4859 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
4860
4861 memset(buf_temp, 0, sizeof(uint64_t));
4862 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4863 if (is_error(ret)) {
4864 return ret;
4865 }
4866
4867 memcpy(&hurb, buf_temp, sizeof(uint64_t));
4868 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
4869 if (!lurb->target_urb_adr) {
4870 return -TARGET_EFAULT;
4871 }
4872 urb_hashtable_remove(lurb);
4873 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
4874 lurb->host_urb.buffer_length);
4875 lurb->target_buf_ptr = NULL;
4876
4877 /* restore the guest buffer pointer */
4878 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
4879
4880 /* update the guest urb struct */
4881 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
4882 if (!argptr) {
4883 g_free(lurb);
4884 return -TARGET_EFAULT;
4885 }
4886 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
4887 unlock_user(argptr, lurb->target_urb_adr, target_size);
4888
4889 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
4890 /* write back the urb handle */
4891 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4892 if (!argptr) {
4893 g_free(lurb);
4894 return -TARGET_EFAULT;
4895 }
4896
4897 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
4898 target_urb_adr = lurb->target_urb_adr;
4899 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
4900 unlock_user(argptr, arg, target_size);
4901
4902 g_free(lurb);
4903 return ret;
4904 }
4905
4906 static abi_long
4907 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
4908 uint8_t *buf_temp __attribute__((unused)),
4909 int fd, int cmd, abi_long arg)
4910 {
4911 struct live_urb *lurb;
4912
4913 /* map target address back to host URB with metadata. */
4914 lurb = urb_hashtable_lookup(arg);
4915 if (!lurb) {
4916 return -TARGET_EFAULT;
4917 }
4918 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4919 }
4920
4921 static abi_long
4922 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
4923 int fd, int cmd, abi_long arg)
4924 {
4925 const argtype *arg_type = ie->arg_type;
4926 int target_size;
4927 abi_long ret;
4928 void *argptr;
4929 int rw_dir;
4930 struct live_urb *lurb;
4931
4932 /*
4933 * each submitted URB needs to map to a unique ID for the
4934 * kernel, and that unique ID needs to be a pointer to
4935 * host memory. hence, we need to malloc for each URB.
4936 * isochronous transfers have a variable length struct.
4937 */
4938 arg_type++;
4939 target_size = thunk_type_size(arg_type, THUNK_TARGET);
4940
4941 /* construct host copy of urb and metadata */
4942 lurb = g_try_new0(struct live_urb, 1);
4943 if (!lurb) {
4944 return -TARGET_ENOMEM;
4945 }
4946
4947 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4948 if (!argptr) {
4949 g_free(lurb);
4950 return -TARGET_EFAULT;
4951 }
4952 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
4953 unlock_user(argptr, arg, 0);
4954
4955 lurb->target_urb_adr = arg;
4956 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
4957
4958 /* buffer space used depends on endpoint type so lock the entire buffer */
4959 /* control type urbs should check the buffer contents for true direction */
4960 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
4961 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
4962 lurb->host_urb.buffer_length, 1);
4963 if (lurb->target_buf_ptr == NULL) {
4964 g_free(lurb);
4965 return -TARGET_EFAULT;
4966 }
4967
4968 /* update buffer pointer in host copy */
4969 lurb->host_urb.buffer = lurb->target_buf_ptr;
4970
4971 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4972 if (is_error(ret)) {
4973 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
4974 g_free(lurb);
4975 } else {
4976 urb_hashtable_insert(lurb);
4977 }
4978
4979 return ret;
4980 }
4981 #endif /* CONFIG_USBFS */
4982
4983 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4984 int cmd, abi_long arg)
4985 {
4986 void *argptr;
4987 struct dm_ioctl *host_dm;
4988 abi_long guest_data;
4989 uint32_t guest_data_size;
4990 int target_size;
4991 const argtype *arg_type = ie->arg_type;
4992 abi_long ret;
4993 void *big_buf = NULL;
4994 char *host_data;
4995
4996 arg_type++;
4997 target_size = thunk_type_size(arg_type, 0);
4998 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4999 if (!argptr) {
5000 ret = -TARGET_EFAULT;
5001 goto out;
5002 }
5003 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5004 unlock_user(argptr, arg, 0);
5005
5006 /* buf_temp is too small, so fetch things into a bigger buffer */
5007 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5008 memcpy(big_buf, buf_temp, target_size);
5009 buf_temp = big_buf;
5010 host_dm = big_buf;
5011
5012 guest_data = arg + host_dm->data_start;
5013 if ((guest_data - arg) < 0) {
5014 ret = -TARGET_EINVAL;
5015 goto out;
5016 }
5017 guest_data_size = host_dm->data_size - host_dm->data_start;
5018 host_data = (char*)host_dm + host_dm->data_start;
5019
5020 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5021 if (!argptr) {
5022 ret = -TARGET_EFAULT;
5023 goto out;
5024 }
5025
5026 switch (ie->host_cmd) {
5027 case DM_REMOVE_ALL:
5028 case DM_LIST_DEVICES:
5029 case DM_DEV_CREATE:
5030 case DM_DEV_REMOVE:
5031 case DM_DEV_SUSPEND:
5032 case DM_DEV_STATUS:
5033 case DM_DEV_WAIT:
5034 case DM_TABLE_STATUS:
5035 case DM_TABLE_CLEAR:
5036 case DM_TABLE_DEPS:
5037 case DM_LIST_VERSIONS:
5038 /* no input data */
5039 break;
5040 case DM_DEV_RENAME:
5041 case DM_DEV_SET_GEOMETRY:
5042 /* data contains only strings */
5043 memcpy(host_data, argptr, guest_data_size);
5044 break;
5045 case DM_TARGET_MSG:
5046 memcpy(host_data, argptr, guest_data_size);
5047 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5048 break;
5049 case DM_TABLE_LOAD:
5050 {
5051 void *gspec = argptr;
5052 void *cur_data = host_data;
5053 const argtype dm_arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5054 int spec_size = thunk_type_size(dm_arg_type, 0);
5055 int i;
5056
5057 for (i = 0; i < host_dm->target_count; i++) {
5058 struct dm_target_spec *spec = cur_data;
5059 uint32_t next;
5060 int slen;
5061
5062 thunk_convert(spec, gspec, dm_arg_type, THUNK_HOST);
5063 slen = strlen((char*)gspec + spec_size) + 1;
5064 next = spec->next;
5065 spec->next = sizeof(*spec) + slen;
5066 strcpy((char*)&spec[1], gspec + spec_size);
5067 gspec += next;
5068 cur_data += spec->next;
5069 }
5070 break;
5071 }
5072 default:
5073 ret = -TARGET_EINVAL;
5074 unlock_user(argptr, guest_data, 0);
5075 goto out;
5076 }
5077 unlock_user(argptr, guest_data, 0);
5078
5079 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5080 if (!is_error(ret)) {
5081 guest_data = arg + host_dm->data_start;
5082 guest_data_size = host_dm->data_size - host_dm->data_start;
5083 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5084 switch (ie->host_cmd) {
5085 case DM_REMOVE_ALL:
5086 case DM_DEV_CREATE:
5087 case DM_DEV_REMOVE:
5088 case DM_DEV_RENAME:
5089 case DM_DEV_SUSPEND:
5090 case DM_DEV_STATUS:
5091 case DM_TABLE_LOAD:
5092 case DM_TABLE_CLEAR:
5093 case DM_TARGET_MSG:
5094 case DM_DEV_SET_GEOMETRY:
5095 /* no return data */
5096 break;
5097 case DM_LIST_DEVICES:
5098 {
5099 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5100 uint32_t remaining_data = guest_data_size;
5101 void *cur_data = argptr;
5102 const argtype dm_arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5103 int nl_size = 12; /* can't use thunk_size due to alignment */
5104
5105 while (1) {
5106 uint32_t next = nl->next;
5107 if (next) {
5108 nl->next = nl_size + (strlen(nl->name) + 1);
5109 }
5110 if (remaining_data < nl->next) {
5111 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5112 break;
5113 }
5114 thunk_convert(cur_data, nl, dm_arg_type, THUNK_TARGET);
5115 strcpy(cur_data + nl_size, nl->name);
5116 cur_data += nl->next;
5117 remaining_data -= nl->next;
5118 if (!next) {
5119 break;
5120 }
5121 nl = (void*)nl + next;
5122 }
5123 break;
5124 }
5125 case DM_DEV_WAIT:
5126 case DM_TABLE_STATUS:
5127 {
5128 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5129 void *cur_data = argptr;
5130 const argtype dm_arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5131 int spec_size = thunk_type_size(dm_arg_type, 0);
5132 int i;
5133
5134 for (i = 0; i < host_dm->target_count; i++) {
5135 uint32_t next = spec->next;
5136 int slen = strlen((char*)&spec[1]) + 1;
5137 spec->next = (cur_data - argptr) + spec_size + slen;
5138 if (guest_data_size < spec->next) {
5139 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5140 break;
5141 }
5142 thunk_convert(cur_data, spec, dm_arg_type, THUNK_TARGET);
5143 strcpy(cur_data + spec_size, (char*)&spec[1]);
5144 cur_data = argptr + spec->next;
5145 spec = (void*)host_dm + host_dm->data_start + next;
5146 }
5147 break;
5148 }
5149 case DM_TABLE_DEPS:
5150 {
5151 void *hdata = (void*)host_dm + host_dm->data_start;
5152 int count = *(uint32_t*)hdata;
5153 uint64_t *hdev = hdata + 8;
5154 uint64_t *gdev = argptr + 8;
5155 int i;
5156
5157 *(uint32_t*)argptr = tswap32(count);
5158 for (i = 0; i < count; i++) {
5159 *gdev = tswap64(*hdev);
5160 gdev++;
5161 hdev++;
5162 }
5163 break;
5164 }
5165 case DM_LIST_VERSIONS:
5166 {
5167 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5168 uint32_t remaining_data = guest_data_size;
5169 void *cur_data = argptr;
5170 const argtype dm_arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5171 int vers_size = thunk_type_size(dm_arg_type, 0);
5172
5173 while (1) {
5174 uint32_t next = vers->next;
5175 if (next) {
5176 vers->next = vers_size + (strlen(vers->name) + 1);
5177 }
5178 if (remaining_data < vers->next) {
5179 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5180 break;
5181 }
5182 thunk_convert(cur_data, vers, dm_arg_type, THUNK_TARGET);
5183 strcpy(cur_data + vers_size, vers->name);
5184 cur_data += vers->next;
5185 remaining_data -= vers->next;
5186 if (!next) {
5187 break;
5188 }
5189 vers = (void*)vers + next;
5190 }
5191 break;
5192 }
5193 default:
5194 unlock_user(argptr, guest_data, 0);
5195 ret = -TARGET_EINVAL;
5196 goto out;
5197 }
5198 unlock_user(argptr, guest_data, guest_data_size);
5199
5200 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5201 if (!argptr) {
5202 ret = -TARGET_EFAULT;
5203 goto out;
5204 }
5205 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5206 unlock_user(argptr, arg, target_size);
5207 }
5208 out:
5209 g_free(big_buf);
5210 return ret;
5211 }
5212
5213 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5214 int cmd, abi_long arg)
5215 {
5216 void *argptr;
5217 int target_size;
5218 const argtype *arg_type = ie->arg_type;
5219 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5220 abi_long ret;
5221
5222 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5223 struct blkpg_partition host_part;
5224
5225 /* Read and convert blkpg */
5226 arg_type++;
5227 target_size = thunk_type_size(arg_type, 0);
5228 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5229 if (!argptr) {
5230 ret = -TARGET_EFAULT;
5231 goto out;
5232 }
5233 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5234 unlock_user(argptr, arg, 0);
5235
5236 switch (host_blkpg->op) {
5237 case BLKPG_ADD_PARTITION:
5238 case BLKPG_DEL_PARTITION:
5239 /* payload is struct blkpg_partition */
5240 break;
5241 default:
5242 /* Unknown opcode */
5243 ret = -TARGET_EINVAL;
5244 goto out;
5245 }
5246
5247 /* Read and convert blkpg->data */
5248 arg = (abi_long)(uintptr_t)host_blkpg->data;
5249 target_size = thunk_type_size(part_arg_type, 0);
5250 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5251 if (!argptr) {
5252 ret = -TARGET_EFAULT;
5253 goto out;
5254 }
5255 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5256 unlock_user(argptr, arg, 0);
5257
5258 /* Swizzle the data pointer to our local copy and call! */
5259 host_blkpg->data = &host_part;
5260 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5261
5262 out:
5263 return ret;
5264 }
5265
5266 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5267 int fd, int cmd, abi_long arg)
5268 {
5269 const argtype *arg_type = ie->arg_type;
5270 const StructEntry *se;
5271 const argtype *field_types;
5272 const int *dst_offsets, *src_offsets;
5273 int target_size;
5274 void *argptr;
5275 abi_ulong *target_rt_dev_ptr = NULL;
5276 unsigned long *host_rt_dev_ptr = NULL;
5277 abi_long ret;
5278 int i;
5279
5280 assert(ie->access == IOC_W);
5281 assert(*arg_type == TYPE_PTR);
5282 arg_type++;
5283 assert(*arg_type == TYPE_STRUCT);
5284 target_size = thunk_type_size(arg_type, 0);
5285 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5286 if (!argptr) {
5287 return -TARGET_EFAULT;
5288 }
5289 arg_type++;
5290 assert(*arg_type == (int)STRUCT_rtentry);
5291 se = struct_entries + *arg_type++;
5292 assert(se->convert[0] == NULL);
5293 /* convert struct here to be able to catch rt_dev string */
5294 field_types = se->field_types;
5295 dst_offsets = se->field_offsets[THUNK_HOST];
5296 src_offsets = se->field_offsets[THUNK_TARGET];
5297 for (i = 0; i < se->nb_fields; i++) {
5298 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5299 assert(*field_types == TYPE_PTRVOID);
5300 target_rt_dev_ptr = argptr + src_offsets[i];
5301 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5302 if (*target_rt_dev_ptr != 0) {
5303 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5304 tswapal(*target_rt_dev_ptr));
5305 if (!*host_rt_dev_ptr) {
5306 unlock_user(argptr, arg, 0);
5307 return -TARGET_EFAULT;
5308 }
5309 } else {
5310 *host_rt_dev_ptr = 0;
5311 }
5312 field_types++;
5313 continue;
5314 }
5315 field_types = thunk_convert(buf_temp + dst_offsets[i],
5316 argptr + src_offsets[i],
5317 field_types, THUNK_HOST);
5318 }
5319 unlock_user(argptr, arg, 0);
5320
5321 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5322
5323 assert(host_rt_dev_ptr != NULL);
5324 assert(target_rt_dev_ptr != NULL);
5325 if (*host_rt_dev_ptr != 0) {
5326 unlock_user((void *)*host_rt_dev_ptr,
5327 *target_rt_dev_ptr, 0);
5328 }
5329 return ret;
5330 }
5331
5332 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5333 int fd, int cmd, abi_long arg)
5334 {
5335 int sig = target_to_host_signal(arg);
5336 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5337 }
5338
5339 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
5340 int fd, int cmd, abi_long arg)
5341 {
5342 struct timeval tv;
5343 abi_long ret;
5344
5345 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
5346 if (is_error(ret)) {
5347 return ret;
5348 }
5349
5350 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
5351 if (copy_to_user_timeval(arg, &tv)) {
5352 return -TARGET_EFAULT;
5353 }
5354 } else {
5355 if (copy_to_user_timeval64(arg, &tv)) {
5356 return -TARGET_EFAULT;
5357 }
5358 }
5359
5360 return ret;
5361 }
5362
5363 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
5364 int fd, int cmd, abi_long arg)
5365 {
5366 struct timespec ts;
5367 abi_long ret;
5368
5369 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
5370 if (is_error(ret)) {
5371 return ret;
5372 }
5373
5374 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5375 if (host_to_target_timespec(arg, &ts)) {
5376 return -TARGET_EFAULT;
5377 }
5378 } else{
5379 if (host_to_target_timespec64(arg, &ts)) {
5380 return -TARGET_EFAULT;
5381 }
5382 }
5383
5384 return ret;
5385 }
5386
5387 #ifdef TIOCGPTPEER
5388 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5389 int fd, int cmd, abi_long arg)
5390 {
5391 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5392 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5393 }
5394 #endif
5395
5396 #ifdef HAVE_DRM_H
5397
5398 static void unlock_drm_version(struct drm_version *host_ver,
5399 struct target_drm_version *target_ver,
5400 bool copy)
5401 {
5402 unlock_user(host_ver->name, target_ver->name,
5403 copy ? host_ver->name_len : 0);
5404 unlock_user(host_ver->date, target_ver->date,
5405 copy ? host_ver->date_len : 0);
5406 unlock_user(host_ver->desc, target_ver->desc,
5407 copy ? host_ver->desc_len : 0);
5408 }
5409
5410 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
5411 struct target_drm_version *target_ver)
5412 {
5413 memset(host_ver, 0, sizeof(*host_ver));
5414
5415 __get_user(host_ver->name_len, &target_ver->name_len);
5416 if (host_ver->name_len) {
5417 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
5418 target_ver->name_len, 0);
5419 if (!host_ver->name) {
5420 return -EFAULT;
5421 }
5422 }
5423
5424 __get_user(host_ver->date_len, &target_ver->date_len);
5425 if (host_ver->date_len) {
5426 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
5427 target_ver->date_len, 0);
5428 if (!host_ver->date) {
5429 goto err;
5430 }
5431 }
5432
5433 __get_user(host_ver->desc_len, &target_ver->desc_len);
5434 if (host_ver->desc_len) {
5435 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
5436 target_ver->desc_len, 0);
5437 if (!host_ver->desc) {
5438 goto err;
5439 }
5440 }
5441
5442 return 0;
5443 err:
5444 unlock_drm_version(host_ver, target_ver, false);
5445 return -EFAULT;
5446 }
5447
5448 static inline void host_to_target_drmversion(
5449 struct target_drm_version *target_ver,
5450 struct drm_version *host_ver)
5451 {
5452 __put_user(host_ver->version_major, &target_ver->version_major);
5453 __put_user(host_ver->version_minor, &target_ver->version_minor);
5454 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
5455 __put_user(host_ver->name_len, &target_ver->name_len);
5456 __put_user(host_ver->date_len, &target_ver->date_len);
5457 __put_user(host_ver->desc_len, &target_ver->desc_len);
5458 unlock_drm_version(host_ver, target_ver, true);
5459 }
5460
5461 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
5462 int fd, int cmd, abi_long arg)
5463 {
5464 struct drm_version *ver;
5465 struct target_drm_version *target_ver;
5466 abi_long ret;
5467
5468 switch (ie->host_cmd) {
5469 case DRM_IOCTL_VERSION:
5470 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
5471 return -TARGET_EFAULT;
5472 }
5473 ver = (struct drm_version *)buf_temp;
5474 ret = target_to_host_drmversion(ver, target_ver);
5475 if (!is_error(ret)) {
5476 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
5477 if (is_error(ret)) {
5478 unlock_drm_version(ver, target_ver, false);
5479 } else {
5480 host_to_target_drmversion(target_ver, ver);
5481 }
5482 }
5483 unlock_user_struct(target_ver, arg, 0);
5484 return ret;
5485 }
5486 return -TARGET_ENOSYS;
5487 }
5488
5489 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie,
5490 struct drm_i915_getparam *gparam,
5491 int fd, abi_long arg)
5492 {
5493 abi_long ret;
5494 int value;
5495 struct target_drm_i915_getparam *target_gparam;
5496
5497 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) {
5498 return -TARGET_EFAULT;
5499 }
5500
5501 __get_user(gparam->param, &target_gparam->param);
5502 gparam->value = &value;
5503 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam));
5504 put_user_s32(value, target_gparam->value);
5505
5506 unlock_user_struct(target_gparam, arg, 0);
5507 return ret;
5508 }
5509
5510 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp,
5511 int fd, int cmd, abi_long arg)
5512 {
5513 switch (ie->host_cmd) {
5514 case DRM_IOCTL_I915_GETPARAM:
5515 return do_ioctl_drm_i915_getparam(ie,
5516 (struct drm_i915_getparam *)buf_temp,
5517 fd, arg);
5518 default:
5519 return -TARGET_ENOSYS;
5520 }
5521 }
5522
5523 #endif
5524
5525 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp,
5526 int fd, int cmd, abi_long arg)
5527 {
5528 struct tun_filter *filter = (struct tun_filter *)buf_temp;
5529 struct tun_filter *target_filter;
5530 char *target_addr;
5531
5532 assert(ie->access == IOC_W);
5533
5534 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1);
5535 if (!target_filter) {
5536 return -TARGET_EFAULT;
5537 }
5538 filter->flags = tswap16(target_filter->flags);
5539 filter->count = tswap16(target_filter->count);
5540 unlock_user(target_filter, arg, 0);
5541
5542 if (filter->count) {
5543 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN >
5544 MAX_STRUCT_SIZE) {
5545 return -TARGET_EFAULT;
5546 }
5547
5548 target_addr = lock_user(VERIFY_READ,
5549 arg + offsetof(struct tun_filter, addr),
5550 filter->count * ETH_ALEN, 1);
5551 if (!target_addr) {
5552 return -TARGET_EFAULT;
5553 }
5554 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN);
5555 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0);
5556 }
5557
5558 return get_errno(safe_ioctl(fd, ie->host_cmd, filter));
5559 }
5560
5561 IOCTLEntry ioctl_entries[] = {
5562 #define IOCTL(cmd, access, ...) \
5563 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5564 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5565 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5566 #define IOCTL_IGNORE(cmd) \
5567 { TARGET_ ## cmd, 0, #cmd },
5568 #include "ioctls.h"
5569 { 0, 0, },
5570 };
5571
5572 /* ??? Implement proper locking for ioctls. */
5573 /* do_ioctl() Must return target values and target errnos. */
5574 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5575 {
5576 const IOCTLEntry *ie;
5577 const argtype *arg_type;
5578 abi_long ret;
5579 uint8_t buf_temp[MAX_STRUCT_SIZE];
5580 int target_size;
5581 void *argptr;
5582
5583 ie = ioctl_entries;
5584 for(;;) {
5585 if (ie->target_cmd == 0) {
5586 qemu_log_mask(
5587 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5588 return -TARGET_ENOTTY;
5589 }
5590 if (ie->target_cmd == cmd)
5591 break;
5592 ie++;
5593 }
5594 arg_type = ie->arg_type;
5595 if (ie->do_ioctl) {
5596 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5597 } else if (!ie->host_cmd) {
5598 /* Some architectures define BSD ioctls in their headers
5599 that are not implemented in Linux. */
5600 return -TARGET_ENOTTY;
5601 }
5602
5603 switch(arg_type[0]) {
5604 case TYPE_NULL:
5605 /* no argument */
5606 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5607 break;
5608 case TYPE_PTRVOID:
5609 case TYPE_INT:
5610 case TYPE_LONG:
5611 case TYPE_ULONG:
5612 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5613 break;
5614 case TYPE_PTR:
5615 arg_type++;
5616 target_size = thunk_type_size(arg_type, 0);
5617 switch(ie->access) {
5618 case IOC_R:
5619 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5620 if (!is_error(ret)) {
5621 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5622 if (!argptr)
5623 return -TARGET_EFAULT;
5624 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5625 unlock_user(argptr, arg, target_size);
5626 }
5627 break;
5628 case IOC_W:
5629 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5630 if (!argptr)
5631 return -TARGET_EFAULT;
5632 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5633 unlock_user(argptr, arg, 0);
5634 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5635 break;
5636 default:
5637 case IOC_RW:
5638 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5639 if (!argptr)
5640 return -TARGET_EFAULT;
5641 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5642 unlock_user(argptr, arg, 0);
5643 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5644 if (!is_error(ret)) {
5645 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5646 if (!argptr)
5647 return -TARGET_EFAULT;
5648 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5649 unlock_user(argptr, arg, target_size);
5650 }
5651 break;
5652 }
5653 break;
5654 default:
5655 qemu_log_mask(LOG_UNIMP,
5656 "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5657 (long)cmd, arg_type[0]);
5658 ret = -TARGET_ENOTTY;
5659 break;
5660 }
5661 return ret;
5662 }
5663
5664 static const bitmask_transtbl iflag_tbl[] = {
5665 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5666 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5667 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5668 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5669 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5670 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5671 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5672 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5673 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5674 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5675 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5676 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5677 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5678 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5679 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
5680 };
5681
5682 static const bitmask_transtbl oflag_tbl[] = {
5683 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5684 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5685 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5686 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5687 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5688 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5689 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5690 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5691 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5692 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5693 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5694 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5695 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5696 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5697 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5698 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5699 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5700 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5701 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5702 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5703 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5704 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5705 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5706 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5707 };
5708
5709 static const bitmask_transtbl cflag_tbl[] = {
5710 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5711 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5712 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5713 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5714 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5715 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5716 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5717 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5718 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5719 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5720 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5721 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5722 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5723 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5724 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5725 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5726 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5727 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5728 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5729 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5730 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5731 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5732 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5733 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5734 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5735 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5736 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5737 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5738 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5739 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5740 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5741 };
5742
5743 static const bitmask_transtbl lflag_tbl[] = {
5744 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5745 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5746 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5747 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5748 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5749 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5750 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5751 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5752 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5753 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5754 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5755 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5756 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5757 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5758 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5759 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
5760 };
5761
5762 static void target_to_host_termios (void *dst, const void *src)
5763 {
5764 struct host_termios *host = dst;
5765 const struct target_termios *target = src;
5766
5767 host->c_iflag =
5768 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5769 host->c_oflag =
5770 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5771 host->c_cflag =
5772 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5773 host->c_lflag =
5774 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5775 host->c_line = target->c_line;
5776
5777 memset(host->c_cc, 0, sizeof(host->c_cc));
5778 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5779 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5780 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5781 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5782 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5783 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5784 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5785 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5786 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5787 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5788 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5789 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5790 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5791 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5792 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5793 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5794 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5795 }
5796
5797 static void host_to_target_termios (void *dst, const void *src)
5798 {
5799 struct target_termios *target = dst;
5800 const struct host_termios *host = src;
5801
5802 target->c_iflag =
5803 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5804 target->c_oflag =
5805 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5806 target->c_cflag =
5807 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5808 target->c_lflag =
5809 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5810 target->c_line = host->c_line;
5811
5812 memset(target->c_cc, 0, sizeof(target->c_cc));
5813 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5814 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5815 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5816 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5817 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5818 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5819 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5820 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5821 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5822 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5823 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5824 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5825 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5826 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5827 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5828 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5829 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5830 }
5831
5832 static const StructEntry struct_termios_def = {
5833 .convert = { host_to_target_termios, target_to_host_termios },
5834 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5835 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5836 .print = print_termios,
5837 };
5838
5839 /* If the host does not provide these bits, they may be safely discarded. */
5840 #ifndef MAP_SYNC
5841 #define MAP_SYNC 0
5842 #endif
5843 #ifndef MAP_UNINITIALIZED
5844 #define MAP_UNINITIALIZED 0
5845 #endif
5846
5847 static const bitmask_transtbl mmap_flags_tbl[] = {
5848 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5849 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5850 MAP_ANONYMOUS, MAP_ANONYMOUS },
5851 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5852 MAP_GROWSDOWN, MAP_GROWSDOWN },
5853 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5854 MAP_DENYWRITE, MAP_DENYWRITE },
5855 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5856 MAP_EXECUTABLE, MAP_EXECUTABLE },
5857 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5858 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
5859 MAP_NORESERVE, MAP_NORESERVE },
5860 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
5861 /* MAP_STACK had been ignored by the kernel for quite some time.
5862 Recognize it for the target insofar as we do not want to pass
5863 it through to the host. */
5864 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
5865 { TARGET_MAP_NONBLOCK, TARGET_MAP_NONBLOCK, MAP_NONBLOCK, MAP_NONBLOCK },
5866 { TARGET_MAP_POPULATE, TARGET_MAP_POPULATE, MAP_POPULATE, MAP_POPULATE },
5867 { TARGET_MAP_FIXED_NOREPLACE, TARGET_MAP_FIXED_NOREPLACE,
5868 MAP_FIXED_NOREPLACE, MAP_FIXED_NOREPLACE },
5869 { TARGET_MAP_UNINITIALIZED, TARGET_MAP_UNINITIALIZED,
5870 MAP_UNINITIALIZED, MAP_UNINITIALIZED },
5871 };
5872
5873 /*
5874 * Arrange for legacy / undefined architecture specific flags to be
5875 * ignored by mmap handling code.
5876 */
5877 #ifndef TARGET_MAP_32BIT
5878 #define TARGET_MAP_32BIT 0
5879 #endif
5880 #ifndef TARGET_MAP_HUGE_2MB
5881 #define TARGET_MAP_HUGE_2MB 0
5882 #endif
5883 #ifndef TARGET_MAP_HUGE_1GB
5884 #define TARGET_MAP_HUGE_1GB 0
5885 #endif
5886
5887 static abi_long do_mmap(abi_ulong addr, abi_ulong len, int prot,
5888 int target_flags, int fd, off_t offset)
5889 {
5890 /*
5891 * The historical set of flags that all mmap types implicitly support.
5892 */
5893 enum {
5894 TARGET_LEGACY_MAP_MASK = TARGET_MAP_SHARED
5895 | TARGET_MAP_PRIVATE
5896 | TARGET_MAP_FIXED
5897 | TARGET_MAP_ANONYMOUS
5898 | TARGET_MAP_DENYWRITE
5899 | TARGET_MAP_EXECUTABLE
5900 | TARGET_MAP_UNINITIALIZED
5901 | TARGET_MAP_GROWSDOWN
5902 | TARGET_MAP_LOCKED
5903 | TARGET_MAP_NORESERVE
5904 | TARGET_MAP_POPULATE
5905 | TARGET_MAP_NONBLOCK
5906 | TARGET_MAP_STACK
5907 | TARGET_MAP_HUGETLB
5908 | TARGET_MAP_32BIT
5909 | TARGET_MAP_HUGE_2MB
5910 | TARGET_MAP_HUGE_1GB
5911 };
5912 int host_flags;
5913
5914 switch (target_flags & TARGET_MAP_TYPE) {
5915 case TARGET_MAP_PRIVATE:
5916 host_flags = MAP_PRIVATE;
5917 break;
5918 case TARGET_MAP_SHARED:
5919 host_flags = MAP_SHARED;
5920 break;
5921 case TARGET_MAP_SHARED_VALIDATE:
5922 /*
5923 * MAP_SYNC is only supported for MAP_SHARED_VALIDATE, and is
5924 * therefore omitted from mmap_flags_tbl and TARGET_LEGACY_MAP_MASK.
5925 */
5926 if (target_flags & ~(TARGET_LEGACY_MAP_MASK | TARGET_MAP_SYNC)) {
5927 return -TARGET_EOPNOTSUPP;
5928 }
5929 host_flags = MAP_SHARED_VALIDATE;
5930 if (target_flags & TARGET_MAP_SYNC) {
5931 host_flags |= MAP_SYNC;
5932 }
5933 break;
5934 default:
5935 return -TARGET_EINVAL;
5936 }
5937 host_flags |= target_to_host_bitmask(target_flags, mmap_flags_tbl);
5938
5939 return get_errno(target_mmap(addr, len, prot, host_flags, fd, offset));
5940 }
5941
5942 /*
5943 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
5944 * TARGET_I386 is defined if TARGET_X86_64 is defined
5945 */
5946 #if defined(TARGET_I386)
5947
5948 /* NOTE: there is really one LDT for all the threads */
5949 static uint8_t *ldt_table;
5950
5951 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5952 {
5953 int size;
5954 void *p;
5955
5956 if (!ldt_table)
5957 return 0;
5958 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5959 if (size > bytecount)
5960 size = bytecount;
5961 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5962 if (!p)
5963 return -TARGET_EFAULT;
5964 /* ??? Should this by byteswapped? */
5965 memcpy(p, ldt_table, size);
5966 unlock_user(p, ptr, size);
5967 return size;
5968 }
5969
5970 /* XXX: add locking support */
5971 static abi_long write_ldt(CPUX86State *env,
5972 abi_ulong ptr, unsigned long bytecount, int oldmode)
5973 {
5974 struct target_modify_ldt_ldt_s ldt_info;
5975 struct target_modify_ldt_ldt_s *target_ldt_info;
5976 int seg_32bit, contents, read_exec_only, limit_in_pages;
5977 int seg_not_present, useable, lm;
5978 uint32_t *lp, entry_1, entry_2;
5979
5980 if (bytecount != sizeof(ldt_info))
5981 return -TARGET_EINVAL;
5982 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5983 return -TARGET_EFAULT;
5984 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5985 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5986 ldt_info.limit = tswap32(target_ldt_info->limit);
5987 ldt_info.flags = tswap32(target_ldt_info->flags);
5988 unlock_user_struct(target_ldt_info, ptr, 0);
5989
5990 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5991 return -TARGET_EINVAL;
5992 seg_32bit = ldt_info.flags & 1;
5993 contents = (ldt_info.flags >> 1) & 3;
5994 read_exec_only = (ldt_info.flags >> 3) & 1;
5995 limit_in_pages = (ldt_info.flags >> 4) & 1;
5996 seg_not_present = (ldt_info.flags >> 5) & 1;
5997 useable = (ldt_info.flags >> 6) & 1;
5998 #ifdef TARGET_ABI32
5999 lm = 0;
6000 #else
6001 lm = (ldt_info.flags >> 7) & 1;
6002 #endif
6003 if (contents == 3) {
6004 if (oldmode)
6005 return -TARGET_EINVAL;
6006 if (seg_not_present == 0)
6007 return -TARGET_EINVAL;
6008 }
6009 /* allocate the LDT */
6010 if (!ldt_table) {
6011 env->ldt.base = target_mmap(0,
6012 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
6013 PROT_READ|PROT_WRITE,
6014 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
6015 if (env->ldt.base == -1)
6016 return -TARGET_ENOMEM;
6017 memset(g2h_untagged(env->ldt.base), 0,
6018 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
6019 env->ldt.limit = 0xffff;
6020 ldt_table = g2h_untagged(env->ldt.base);
6021 }
6022
6023 /* NOTE: same code as Linux kernel */
6024 /* Allow LDTs to be cleared by the user. */
6025 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6026 if (oldmode ||
6027 (contents == 0 &&
6028 read_exec_only == 1 &&
6029 seg_32bit == 0 &&
6030 limit_in_pages == 0 &&
6031 seg_not_present == 1 &&
6032 useable == 0 )) {
6033 entry_1 = 0;
6034 entry_2 = 0;
6035 goto install;
6036 }
6037 }
6038
6039 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6040 (ldt_info.limit & 0x0ffff);
6041 entry_2 = (ldt_info.base_addr & 0xff000000) |
6042 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6043 (ldt_info.limit & 0xf0000) |
6044 ((read_exec_only ^ 1) << 9) |
6045 (contents << 10) |
6046 ((seg_not_present ^ 1) << 15) |
6047 (seg_32bit << 22) |
6048 (limit_in_pages << 23) |
6049 (lm << 21) |
6050 0x7000;
6051 if (!oldmode)
6052 entry_2 |= (useable << 20);
6053
6054 /* Install the new entry ... */
6055 install:
6056 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
6057 lp[0] = tswap32(entry_1);
6058 lp[1] = tswap32(entry_2);
6059 return 0;
6060 }
6061
6062 /* specific and weird i386 syscalls */
6063 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
6064 unsigned long bytecount)
6065 {
6066 abi_long ret;
6067
6068 switch (func) {
6069 case 0:
6070 ret = read_ldt(ptr, bytecount);
6071 break;
6072 case 1:
6073 ret = write_ldt(env, ptr, bytecount, 1);
6074 break;
6075 case 0x11:
6076 ret = write_ldt(env, ptr, bytecount, 0);
6077 break;
6078 default:
6079 ret = -TARGET_ENOSYS;
6080 break;
6081 }
6082 return ret;
6083 }
6084
6085 #if defined(TARGET_ABI32)
6086 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
6087 {
6088 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6089 struct target_modify_ldt_ldt_s ldt_info;
6090 struct target_modify_ldt_ldt_s *target_ldt_info;
6091 int seg_32bit, contents, read_exec_only, limit_in_pages;
6092 int seg_not_present, useable, lm;
6093 uint32_t *lp, entry_1, entry_2;
6094 int i;
6095
6096 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6097 if (!target_ldt_info)
6098 return -TARGET_EFAULT;
6099 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6100 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6101 ldt_info.limit = tswap32(target_ldt_info->limit);
6102 ldt_info.flags = tswap32(target_ldt_info->flags);
6103 if (ldt_info.entry_number == -1) {
6104 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
6105 if (gdt_table[i] == 0) {
6106 ldt_info.entry_number = i;
6107 target_ldt_info->entry_number = tswap32(i);
6108 break;
6109 }
6110 }
6111 }
6112 unlock_user_struct(target_ldt_info, ptr, 1);
6113
6114 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
6115 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
6116 return -TARGET_EINVAL;
6117 seg_32bit = ldt_info.flags & 1;
6118 contents = (ldt_info.flags >> 1) & 3;
6119 read_exec_only = (ldt_info.flags >> 3) & 1;
6120 limit_in_pages = (ldt_info.flags >> 4) & 1;
6121 seg_not_present = (ldt_info.flags >> 5) & 1;
6122 useable = (ldt_info.flags >> 6) & 1;
6123 #ifdef TARGET_ABI32
6124 lm = 0;
6125 #else
6126 lm = (ldt_info.flags >> 7) & 1;
6127 #endif
6128
6129 if (contents == 3) {
6130 if (seg_not_present == 0)
6131 return -TARGET_EINVAL;
6132 }
6133
6134 /* NOTE: same code as Linux kernel */
6135 /* Allow LDTs to be cleared by the user. */
6136 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6137 if ((contents == 0 &&
6138 read_exec_only == 1 &&
6139 seg_32bit == 0 &&
6140 limit_in_pages == 0 &&
6141 seg_not_present == 1 &&
6142 useable == 0 )) {
6143 entry_1 = 0;
6144 entry_2 = 0;
6145 goto install;
6146 }
6147 }
6148
6149 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6150 (ldt_info.limit & 0x0ffff);
6151 entry_2 = (ldt_info.base_addr & 0xff000000) |
6152 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6153 (ldt_info.limit & 0xf0000) |
6154 ((read_exec_only ^ 1) << 9) |
6155 (contents << 10) |
6156 ((seg_not_present ^ 1) << 15) |
6157 (seg_32bit << 22) |
6158 (limit_in_pages << 23) |
6159 (useable << 20) |
6160 (lm << 21) |
6161 0x7000;
6162
6163 /* Install the new entry ... */
6164 install:
6165 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
6166 lp[0] = tswap32(entry_1);
6167 lp[1] = tswap32(entry_2);
6168 return 0;
6169 }
6170
6171 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
6172 {
6173 struct target_modify_ldt_ldt_s *target_ldt_info;
6174 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6175 uint32_t base_addr, limit, flags;
6176 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
6177 int seg_not_present, useable, lm;
6178 uint32_t *lp, entry_1, entry_2;
6179
6180 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6181 if (!target_ldt_info)
6182 return -TARGET_EFAULT;
6183 idx = tswap32(target_ldt_info->entry_number);
6184 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
6185 idx > TARGET_GDT_ENTRY_TLS_MAX) {
6186 unlock_user_struct(target_ldt_info, ptr, 1);
6187 return -TARGET_EINVAL;
6188 }
6189 lp = (uint32_t *)(gdt_table + idx);
6190 entry_1 = tswap32(lp[0]);
6191 entry_2 = tswap32(lp[1]);
6192
6193 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
6194 contents = (entry_2 >> 10) & 3;
6195 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
6196 seg_32bit = (entry_2 >> 22) & 1;
6197 limit_in_pages = (entry_2 >> 23) & 1;
6198 useable = (entry_2 >> 20) & 1;
6199 #ifdef TARGET_ABI32
6200 lm = 0;
6201 #else
6202 lm = (entry_2 >> 21) & 1;
6203 #endif
6204 flags = (seg_32bit << 0) | (contents << 1) |
6205 (read_exec_only << 3) | (limit_in_pages << 4) |
6206 (seg_not_present << 5) | (useable << 6) | (lm << 7);
6207 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
6208 base_addr = (entry_1 >> 16) |
6209 (entry_2 & 0xff000000) |
6210 ((entry_2 & 0xff) << 16);
6211 target_ldt_info->base_addr = tswapal(base_addr);
6212 target_ldt_info->limit = tswap32(limit);
6213 target_ldt_info->flags = tswap32(flags);
6214 unlock_user_struct(target_ldt_info, ptr, 1);
6215 return 0;
6216 }
6217
6218 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6219 {
6220 return -TARGET_ENOSYS;
6221 }
6222 #else
6223 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6224 {
6225 abi_long ret = 0;
6226 abi_ulong val;
6227 int idx;
6228
6229 switch(code) {
6230 case TARGET_ARCH_SET_GS:
6231 case TARGET_ARCH_SET_FS:
6232 if (code == TARGET_ARCH_SET_GS)
6233 idx = R_GS;
6234 else
6235 idx = R_FS;
6236 cpu_x86_load_seg(env, idx, 0);
6237 env->segs[idx].base = addr;
6238 break;
6239 case TARGET_ARCH_GET_GS:
6240 case TARGET_ARCH_GET_FS:
6241 if (code == TARGET_ARCH_GET_GS)
6242 idx = R_GS;
6243 else
6244 idx = R_FS;
6245 val = env->segs[idx].base;
6246 if (put_user(val, addr, abi_ulong))
6247 ret = -TARGET_EFAULT;
6248 break;
6249 default:
6250 ret = -TARGET_EINVAL;
6251 break;
6252 }
6253 return ret;
6254 }
6255 #endif /* defined(TARGET_ABI32 */
6256 #endif /* defined(TARGET_I386) */
6257
6258 /*
6259 * These constants are generic. Supply any that are missing from the host.
6260 */
6261 #ifndef PR_SET_NAME
6262 # define PR_SET_NAME 15
6263 # define PR_GET_NAME 16
6264 #endif
6265 #ifndef PR_SET_FP_MODE
6266 # define PR_SET_FP_MODE 45
6267 # define PR_GET_FP_MODE 46
6268 # define PR_FP_MODE_FR (1 << 0)
6269 # define PR_FP_MODE_FRE (1 << 1)
6270 #endif
6271 #ifndef PR_SVE_SET_VL
6272 # define PR_SVE_SET_VL 50
6273 # define PR_SVE_GET_VL 51
6274 # define PR_SVE_VL_LEN_MASK 0xffff
6275 # define PR_SVE_VL_INHERIT (1 << 17)
6276 #endif
6277 #ifndef PR_PAC_RESET_KEYS
6278 # define PR_PAC_RESET_KEYS 54
6279 # define PR_PAC_APIAKEY (1 << 0)
6280 # define PR_PAC_APIBKEY (1 << 1)
6281 # define PR_PAC_APDAKEY (1 << 2)
6282 # define PR_PAC_APDBKEY (1 << 3)
6283 # define PR_PAC_APGAKEY (1 << 4)
6284 #endif
6285 #ifndef PR_SET_TAGGED_ADDR_CTRL
6286 # define PR_SET_TAGGED_ADDR_CTRL 55
6287 # define PR_GET_TAGGED_ADDR_CTRL 56
6288 # define PR_TAGGED_ADDR_ENABLE (1UL << 0)
6289 #endif
6290 #ifndef PR_MTE_TCF_SHIFT
6291 # define PR_MTE_TCF_SHIFT 1
6292 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
6293 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
6294 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
6295 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
6296 # define PR_MTE_TAG_SHIFT 3
6297 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
6298 #endif
6299 #ifndef PR_SET_IO_FLUSHER
6300 # define PR_SET_IO_FLUSHER 57
6301 # define PR_GET_IO_FLUSHER 58
6302 #endif
6303 #ifndef PR_SET_SYSCALL_USER_DISPATCH
6304 # define PR_SET_SYSCALL_USER_DISPATCH 59
6305 #endif
6306 #ifndef PR_SME_SET_VL
6307 # define PR_SME_SET_VL 63
6308 # define PR_SME_GET_VL 64
6309 # define PR_SME_VL_LEN_MASK 0xffff
6310 # define PR_SME_VL_INHERIT (1 << 17)
6311 #endif
6312
6313 #include "target_prctl.h"
6314
6315 static abi_long do_prctl_inval0(CPUArchState *env)
6316 {
6317 return -TARGET_EINVAL;
6318 }
6319
6320 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2)
6321 {
6322 return -TARGET_EINVAL;
6323 }
6324
6325 #ifndef do_prctl_get_fp_mode
6326 #define do_prctl_get_fp_mode do_prctl_inval0
6327 #endif
6328 #ifndef do_prctl_set_fp_mode
6329 #define do_prctl_set_fp_mode do_prctl_inval1
6330 #endif
6331 #ifndef do_prctl_sve_get_vl
6332 #define do_prctl_sve_get_vl do_prctl_inval0
6333 #endif
6334 #ifndef do_prctl_sve_set_vl
6335 #define do_prctl_sve_set_vl do_prctl_inval1
6336 #endif
6337 #ifndef do_prctl_reset_keys
6338 #define do_prctl_reset_keys do_prctl_inval1
6339 #endif
6340 #ifndef do_prctl_set_tagged_addr_ctrl
6341 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1
6342 #endif
6343 #ifndef do_prctl_get_tagged_addr_ctrl
6344 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0
6345 #endif
6346 #ifndef do_prctl_get_unalign
6347 #define do_prctl_get_unalign do_prctl_inval1
6348 #endif
6349 #ifndef do_prctl_set_unalign
6350 #define do_prctl_set_unalign do_prctl_inval1
6351 #endif
6352 #ifndef do_prctl_sme_get_vl
6353 #define do_prctl_sme_get_vl do_prctl_inval0
6354 #endif
6355 #ifndef do_prctl_sme_set_vl
6356 #define do_prctl_sme_set_vl do_prctl_inval1
6357 #endif
6358
6359 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2,
6360 abi_long arg3, abi_long arg4, abi_long arg5)
6361 {
6362 abi_long ret;
6363
6364 switch (option) {
6365 case PR_GET_PDEATHSIG:
6366 {
6367 int deathsig;
6368 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig,
6369 arg3, arg4, arg5));
6370 if (!is_error(ret) &&
6371 put_user_s32(host_to_target_signal(deathsig), arg2)) {
6372 return -TARGET_EFAULT;
6373 }
6374 return ret;
6375 }
6376 case PR_SET_PDEATHSIG:
6377 return get_errno(prctl(PR_SET_PDEATHSIG, target_to_host_signal(arg2),
6378 arg3, arg4, arg5));
6379 case PR_GET_NAME:
6380 {
6381 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
6382 if (!name) {
6383 return -TARGET_EFAULT;
6384 }
6385 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name,
6386 arg3, arg4, arg5));
6387 unlock_user(name, arg2, 16);
6388 return ret;
6389 }
6390 case PR_SET_NAME:
6391 {
6392 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
6393 if (!name) {
6394 return -TARGET_EFAULT;
6395 }
6396 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name,
6397 arg3, arg4, arg5));
6398 unlock_user(name, arg2, 0);
6399 return ret;
6400 }
6401 case PR_GET_FP_MODE:
6402 return do_prctl_get_fp_mode(env);
6403 case PR_SET_FP_MODE:
6404 return do_prctl_set_fp_mode(env, arg2);
6405 case PR_SVE_GET_VL:
6406 return do_prctl_sve_get_vl(env);
6407 case PR_SVE_SET_VL:
6408 return do_prctl_sve_set_vl(env, arg2);
6409 case PR_SME_GET_VL:
6410 return do_prctl_sme_get_vl(env);
6411 case PR_SME_SET_VL:
6412 return do_prctl_sme_set_vl(env, arg2);
6413 case PR_PAC_RESET_KEYS:
6414 if (arg3 || arg4 || arg5) {
6415 return -TARGET_EINVAL;
6416 }
6417 return do_prctl_reset_keys(env, arg2);
6418 case PR_SET_TAGGED_ADDR_CTRL:
6419 if (arg3 || arg4 || arg5) {
6420 return -TARGET_EINVAL;
6421 }
6422 return do_prctl_set_tagged_addr_ctrl(env, arg2);
6423 case PR_GET_TAGGED_ADDR_CTRL:
6424 if (arg2 || arg3 || arg4 || arg5) {
6425 return -TARGET_EINVAL;
6426 }
6427 return do_prctl_get_tagged_addr_ctrl(env);
6428
6429 case PR_GET_UNALIGN:
6430 return do_prctl_get_unalign(env, arg2);
6431 case PR_SET_UNALIGN:
6432 return do_prctl_set_unalign(env, arg2);
6433
6434 case PR_CAP_AMBIENT:
6435 case PR_CAPBSET_READ:
6436 case PR_CAPBSET_DROP:
6437 case PR_GET_DUMPABLE:
6438 case PR_SET_DUMPABLE:
6439 case PR_GET_KEEPCAPS:
6440 case PR_SET_KEEPCAPS:
6441 case PR_GET_SECUREBITS:
6442 case PR_SET_SECUREBITS:
6443 case PR_GET_TIMING:
6444 case PR_SET_TIMING:
6445 case PR_GET_TIMERSLACK:
6446 case PR_SET_TIMERSLACK:
6447 case PR_MCE_KILL:
6448 case PR_MCE_KILL_GET:
6449 case PR_GET_NO_NEW_PRIVS:
6450 case PR_SET_NO_NEW_PRIVS:
6451 case PR_GET_IO_FLUSHER:
6452 case PR_SET_IO_FLUSHER:
6453 /* Some prctl options have no pointer arguments and we can pass on. */
6454 return get_errno(prctl(option, arg2, arg3, arg4, arg5));
6455
6456 case PR_GET_CHILD_SUBREAPER:
6457 case PR_SET_CHILD_SUBREAPER:
6458 case PR_GET_SPECULATION_CTRL:
6459 case PR_SET_SPECULATION_CTRL:
6460 case PR_GET_TID_ADDRESS:
6461 /* TODO */
6462 return -TARGET_EINVAL;
6463
6464 case PR_GET_FPEXC:
6465 case PR_SET_FPEXC:
6466 /* Was used for SPE on PowerPC. */
6467 return -TARGET_EINVAL;
6468
6469 case PR_GET_ENDIAN:
6470 case PR_SET_ENDIAN:
6471 case PR_GET_FPEMU:
6472 case PR_SET_FPEMU:
6473 case PR_SET_MM:
6474 case PR_GET_SECCOMP:
6475 case PR_SET_SECCOMP:
6476 case PR_SET_SYSCALL_USER_DISPATCH:
6477 case PR_GET_THP_DISABLE:
6478 case PR_SET_THP_DISABLE:
6479 case PR_GET_TSC:
6480 case PR_SET_TSC:
6481 /* Disable to prevent the target disabling stuff we need. */
6482 return -TARGET_EINVAL;
6483
6484 default:
6485 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n",
6486 option);
6487 return -TARGET_EINVAL;
6488 }
6489 }
6490
6491 #define NEW_STACK_SIZE 0x40000
6492
6493
6494 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6495 typedef struct {
6496 CPUArchState *env;
6497 pthread_mutex_t mutex;
6498 pthread_cond_t cond;
6499 pthread_t thread;
6500 uint32_t tid;
6501 abi_ulong child_tidptr;
6502 abi_ulong parent_tidptr;
6503 sigset_t sigmask;
6504 } new_thread_info;
6505
6506 static void *clone_func(void *arg)
6507 {
6508 new_thread_info *info = arg;
6509 CPUArchState *env;
6510 CPUState *cpu;
6511 TaskState *ts;
6512
6513 rcu_register_thread();
6514 tcg_register_thread();
6515 env = info->env;
6516 cpu = env_cpu(env);
6517 thread_cpu = cpu;
6518 ts = get_task_state(cpu);
6519 info->tid = sys_gettid();
6520 task_settid(ts);
6521 if (info->child_tidptr)
6522 put_user_u32(info->tid, info->child_tidptr);
6523 if (info->parent_tidptr)
6524 put_user_u32(info->tid, info->parent_tidptr);
6525 qemu_guest_random_seed_thread_part2(cpu->random_seed);
6526 /* Enable signals. */
6527 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6528 /* Signal to the parent that we're ready. */
6529 pthread_mutex_lock(&info->mutex);
6530 pthread_cond_broadcast(&info->cond);
6531 pthread_mutex_unlock(&info->mutex);
6532 /* Wait until the parent has finished initializing the tls state. */
6533 pthread_mutex_lock(&clone_lock);
6534 pthread_mutex_unlock(&clone_lock);
6535 cpu_loop(env);
6536 /* never exits */
6537 return NULL;
6538 }
6539
6540 /* do_fork() Must return host values and target errnos (unlike most
6541 do_*() functions). */
6542 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6543 abi_ulong parent_tidptr, target_ulong newtls,
6544 abi_ulong child_tidptr)
6545 {
6546 CPUState *cpu = env_cpu(env);
6547 int ret;
6548 TaskState *ts;
6549 CPUState *new_cpu;
6550 CPUArchState *new_env;
6551 sigset_t sigmask;
6552
6553 flags &= ~CLONE_IGNORED_FLAGS;
6554
6555 /* Emulate vfork() with fork() */
6556 if (flags & CLONE_VFORK)
6557 flags &= ~(CLONE_VFORK | CLONE_VM);
6558
6559 if (flags & CLONE_VM) {
6560 TaskState *parent_ts = get_task_state(cpu);
6561 new_thread_info info;
6562 pthread_attr_t attr;
6563
6564 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6565 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6566 return -TARGET_EINVAL;
6567 }
6568
6569 ts = g_new0(TaskState, 1);
6570 init_task_state(ts);
6571
6572 /* Grab a mutex so that thread setup appears atomic. */
6573 pthread_mutex_lock(&clone_lock);
6574
6575 /*
6576 * If this is our first additional thread, we need to ensure we
6577 * generate code for parallel execution and flush old translations.
6578 * Do this now so that the copy gets CF_PARALLEL too.
6579 */
6580 if (!(cpu->tcg_cflags & CF_PARALLEL)) {
6581 cpu->tcg_cflags |= CF_PARALLEL;
6582 tb_flush(cpu);
6583 }
6584
6585 /* we create a new CPU instance. */
6586 new_env = cpu_copy(env);
6587 /* Init regs that differ from the parent. */
6588 cpu_clone_regs_child(new_env, newsp, flags);
6589 cpu_clone_regs_parent(env, flags);
6590 new_cpu = env_cpu(new_env);
6591 new_cpu->opaque = ts;
6592 ts->bprm = parent_ts->bprm;
6593 ts->info = parent_ts->info;
6594 ts->signal_mask = parent_ts->signal_mask;
6595
6596 if (flags & CLONE_CHILD_CLEARTID) {
6597 ts->child_tidptr = child_tidptr;
6598 }
6599
6600 if (flags & CLONE_SETTLS) {
6601 cpu_set_tls (new_env, newtls);
6602 }
6603
6604 memset(&info, 0, sizeof(info));
6605 pthread_mutex_init(&info.mutex, NULL);
6606 pthread_mutex_lock(&info.mutex);
6607 pthread_cond_init(&info.cond, NULL);
6608 info.env = new_env;
6609 if (flags & CLONE_CHILD_SETTID) {
6610 info.child_tidptr = child_tidptr;
6611 }
6612 if (flags & CLONE_PARENT_SETTID) {
6613 info.parent_tidptr = parent_tidptr;
6614 }
6615
6616 ret = pthread_attr_init(&attr);
6617 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6618 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6619 /* It is not safe to deliver signals until the child has finished
6620 initializing, so temporarily block all signals. */
6621 sigfillset(&sigmask);
6622 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6623 cpu->random_seed = qemu_guest_random_seed_thread_part1();
6624
6625 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6626 /* TODO: Free new CPU state if thread creation failed. */
6627
6628 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6629 pthread_attr_destroy(&attr);
6630 if (ret == 0) {
6631 /* Wait for the child to initialize. */
6632 pthread_cond_wait(&info.cond, &info.mutex);
6633 ret = info.tid;
6634 } else {
6635 ret = -1;
6636 }
6637 pthread_mutex_unlock(&info.mutex);
6638 pthread_cond_destroy(&info.cond);
6639 pthread_mutex_destroy(&info.mutex);
6640 pthread_mutex_unlock(&clone_lock);
6641 } else {
6642 /* if no CLONE_VM, we consider it is a fork */
6643 if (flags & CLONE_INVALID_FORK_FLAGS) {
6644 return -TARGET_EINVAL;
6645 }
6646
6647 /* We can't support custom termination signals */
6648 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6649 return -TARGET_EINVAL;
6650 }
6651
6652 #if !defined(__NR_pidfd_open) || !defined(TARGET_NR_pidfd_open)
6653 if (flags & CLONE_PIDFD) {
6654 return -TARGET_EINVAL;
6655 }
6656 #endif
6657
6658 /* Can not allow CLONE_PIDFD with CLONE_PARENT_SETTID */
6659 if ((flags & CLONE_PIDFD) && (flags & CLONE_PARENT_SETTID)) {
6660 return -TARGET_EINVAL;
6661 }
6662
6663 if (block_signals()) {
6664 return -QEMU_ERESTARTSYS;
6665 }
6666
6667 fork_start();
6668 ret = fork();
6669 if (ret == 0) {
6670 /* Child Process. */
6671 cpu_clone_regs_child(env, newsp, flags);
6672 fork_end(ret);
6673 /* There is a race condition here. The parent process could
6674 theoretically read the TID in the child process before the child
6675 tid is set. This would require using either ptrace
6676 (not implemented) or having *_tidptr to point at a shared memory
6677 mapping. We can't repeat the spinlock hack used above because
6678 the child process gets its own copy of the lock. */
6679 if (flags & CLONE_CHILD_SETTID)
6680 put_user_u32(sys_gettid(), child_tidptr);
6681 if (flags & CLONE_PARENT_SETTID)
6682 put_user_u32(sys_gettid(), parent_tidptr);
6683 ts = get_task_state(cpu);
6684 if (flags & CLONE_SETTLS)
6685 cpu_set_tls (env, newtls);
6686 if (flags & CLONE_CHILD_CLEARTID)
6687 ts->child_tidptr = child_tidptr;
6688 } else {
6689 cpu_clone_regs_parent(env, flags);
6690 if (flags & CLONE_PIDFD) {
6691 int pid_fd = 0;
6692 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
6693 int pid_child = ret;
6694 pid_fd = pidfd_open(pid_child, 0);
6695 if (pid_fd >= 0) {
6696 fcntl(pid_fd, F_SETFD, fcntl(pid_fd, F_GETFL)
6697 | FD_CLOEXEC);
6698 } else {
6699 pid_fd = 0;
6700 }
6701 #endif
6702 put_user_u32(pid_fd, parent_tidptr);
6703 }
6704 fork_end(ret);
6705 }
6706 g_assert(!cpu_in_exclusive_context(cpu));
6707 }
6708 return ret;
6709 }
6710
6711 /* warning : doesn't handle linux specific flags... */
6712 static int target_to_host_fcntl_cmd(int cmd)
6713 {
6714 int ret;
6715
6716 switch(cmd) {
6717 case TARGET_F_DUPFD:
6718 case TARGET_F_GETFD:
6719 case TARGET_F_SETFD:
6720 case TARGET_F_GETFL:
6721 case TARGET_F_SETFL:
6722 case TARGET_F_OFD_GETLK:
6723 case TARGET_F_OFD_SETLK:
6724 case TARGET_F_OFD_SETLKW:
6725 ret = cmd;
6726 break;
6727 case TARGET_F_GETLK:
6728 ret = F_GETLK64;
6729 break;
6730 case TARGET_F_SETLK:
6731 ret = F_SETLK64;
6732 break;
6733 case TARGET_F_SETLKW:
6734 ret = F_SETLKW64;
6735 break;
6736 case TARGET_F_GETOWN:
6737 ret = F_GETOWN;
6738 break;
6739 case TARGET_F_SETOWN:
6740 ret = F_SETOWN;
6741 break;
6742 case TARGET_F_GETSIG:
6743 ret = F_GETSIG;
6744 break;
6745 case TARGET_F_SETSIG:
6746 ret = F_SETSIG;
6747 break;
6748 #if TARGET_ABI_BITS == 32
6749 case TARGET_F_GETLK64:
6750 ret = F_GETLK64;
6751 break;
6752 case TARGET_F_SETLK64:
6753 ret = F_SETLK64;
6754 break;
6755 case TARGET_F_SETLKW64:
6756 ret = F_SETLKW64;
6757 break;
6758 #endif
6759 case TARGET_F_SETLEASE:
6760 ret = F_SETLEASE;
6761 break;
6762 case TARGET_F_GETLEASE:
6763 ret = F_GETLEASE;
6764 break;
6765 #ifdef F_DUPFD_CLOEXEC
6766 case TARGET_F_DUPFD_CLOEXEC:
6767 ret = F_DUPFD_CLOEXEC;
6768 break;
6769 #endif
6770 case TARGET_F_NOTIFY:
6771 ret = F_NOTIFY;
6772 break;
6773 #ifdef F_GETOWN_EX
6774 case TARGET_F_GETOWN_EX:
6775 ret = F_GETOWN_EX;
6776 break;
6777 #endif
6778 #ifdef F_SETOWN_EX
6779 case TARGET_F_SETOWN_EX:
6780 ret = F_SETOWN_EX;
6781 break;
6782 #endif
6783 #ifdef F_SETPIPE_SZ
6784 case TARGET_F_SETPIPE_SZ:
6785 ret = F_SETPIPE_SZ;
6786 break;
6787 case TARGET_F_GETPIPE_SZ:
6788 ret = F_GETPIPE_SZ;
6789 break;
6790 #endif
6791 #ifdef F_ADD_SEALS
6792 case TARGET_F_ADD_SEALS:
6793 ret = F_ADD_SEALS;
6794 break;
6795 case TARGET_F_GET_SEALS:
6796 ret = F_GET_SEALS;
6797 break;
6798 #endif
6799 default:
6800 ret = -TARGET_EINVAL;
6801 break;
6802 }
6803
6804 #if defined(__powerpc64__)
6805 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
6806 * is not supported by kernel. The glibc fcntl call actually adjusts
6807 * them to 5, 6 and 7 before making the syscall(). Since we make the
6808 * syscall directly, adjust to what is supported by the kernel.
6809 */
6810 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
6811 ret -= F_GETLK64 - 5;
6812 }
6813 #endif
6814
6815 return ret;
6816 }
6817
6818 #define FLOCK_TRANSTBL \
6819 switch (type) { \
6820 TRANSTBL_CONVERT(F_RDLCK); \
6821 TRANSTBL_CONVERT(F_WRLCK); \
6822 TRANSTBL_CONVERT(F_UNLCK); \
6823 }
6824
6825 static int target_to_host_flock(int type)
6826 {
6827 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
6828 FLOCK_TRANSTBL
6829 #undef TRANSTBL_CONVERT
6830 return -TARGET_EINVAL;
6831 }
6832
6833 static int host_to_target_flock(int type)
6834 {
6835 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
6836 FLOCK_TRANSTBL
6837 #undef TRANSTBL_CONVERT
6838 /* if we don't know how to convert the value coming
6839 * from the host we copy to the target field as-is
6840 */
6841 return type;
6842 }
6843
6844 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6845 abi_ulong target_flock_addr)
6846 {
6847 struct target_flock *target_fl;
6848 int l_type;
6849
6850 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6851 return -TARGET_EFAULT;
6852 }
6853
6854 __get_user(l_type, &target_fl->l_type);
6855 l_type = target_to_host_flock(l_type);
6856 if (l_type < 0) {
6857 return l_type;
6858 }
6859 fl->l_type = l_type;
6860 __get_user(fl->l_whence, &target_fl->l_whence);
6861 __get_user(fl->l_start, &target_fl->l_start);
6862 __get_user(fl->l_len, &target_fl->l_len);
6863 __get_user(fl->l_pid, &target_fl->l_pid);
6864 unlock_user_struct(target_fl, target_flock_addr, 0);
6865 return 0;
6866 }
6867
6868 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6869 const struct flock64 *fl)
6870 {
6871 struct target_flock *target_fl;
6872 short l_type;
6873
6874 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6875 return -TARGET_EFAULT;
6876 }
6877
6878 l_type = host_to_target_flock(fl->l_type);
6879 __put_user(l_type, &target_fl->l_type);
6880 __put_user(fl->l_whence, &target_fl->l_whence);
6881 __put_user(fl->l_start, &target_fl->l_start);
6882 __put_user(fl->l_len, &target_fl->l_len);
6883 __put_user(fl->l_pid, &target_fl->l_pid);
6884 unlock_user_struct(target_fl, target_flock_addr, 1);
6885 return 0;
6886 }
6887
6888 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6889 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6890
6891 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6892 struct target_oabi_flock64 {
6893 abi_short l_type;
6894 abi_short l_whence;
6895 abi_llong l_start;
6896 abi_llong l_len;
6897 abi_int l_pid;
6898 } QEMU_PACKED;
6899
6900 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
6901 abi_ulong target_flock_addr)
6902 {
6903 struct target_oabi_flock64 *target_fl;
6904 int l_type;
6905
6906 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6907 return -TARGET_EFAULT;
6908 }
6909
6910 __get_user(l_type, &target_fl->l_type);
6911 l_type = target_to_host_flock(l_type);
6912 if (l_type < 0) {
6913 return l_type;
6914 }
6915 fl->l_type = l_type;
6916 __get_user(fl->l_whence, &target_fl->l_whence);
6917 __get_user(fl->l_start, &target_fl->l_start);
6918 __get_user(fl->l_len, &target_fl->l_len);
6919 __get_user(fl->l_pid, &target_fl->l_pid);
6920 unlock_user_struct(target_fl, target_flock_addr, 0);
6921 return 0;
6922 }
6923
6924 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
6925 const struct flock64 *fl)
6926 {
6927 struct target_oabi_flock64 *target_fl;
6928 short l_type;
6929
6930 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6931 return -TARGET_EFAULT;
6932 }
6933
6934 l_type = host_to_target_flock(fl->l_type);
6935 __put_user(l_type, &target_fl->l_type);
6936 __put_user(fl->l_whence, &target_fl->l_whence);
6937 __put_user(fl->l_start, &target_fl->l_start);
6938 __put_user(fl->l_len, &target_fl->l_len);
6939 __put_user(fl->l_pid, &target_fl->l_pid);
6940 unlock_user_struct(target_fl, target_flock_addr, 1);
6941 return 0;
6942 }
6943 #endif
6944
6945 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6946 abi_ulong target_flock_addr)
6947 {
6948 struct target_flock64 *target_fl;
6949 int l_type;
6950
6951 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6952 return -TARGET_EFAULT;
6953 }
6954
6955 __get_user(l_type, &target_fl->l_type);
6956 l_type = target_to_host_flock(l_type);
6957 if (l_type < 0) {
6958 return l_type;
6959 }
6960 fl->l_type = l_type;
6961 __get_user(fl->l_whence, &target_fl->l_whence);
6962 __get_user(fl->l_start, &target_fl->l_start);
6963 __get_user(fl->l_len, &target_fl->l_len);
6964 __get_user(fl->l_pid, &target_fl->l_pid);
6965 unlock_user_struct(target_fl, target_flock_addr, 0);
6966 return 0;
6967 }
6968
6969 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6970 const struct flock64 *fl)
6971 {
6972 struct target_flock64 *target_fl;
6973 short l_type;
6974
6975 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6976 return -TARGET_EFAULT;
6977 }
6978
6979 l_type = host_to_target_flock(fl->l_type);
6980 __put_user(l_type, &target_fl->l_type);
6981 __put_user(fl->l_whence, &target_fl->l_whence);
6982 __put_user(fl->l_start, &target_fl->l_start);
6983 __put_user(fl->l_len, &target_fl->l_len);
6984 __put_user(fl->l_pid, &target_fl->l_pid);
6985 unlock_user_struct(target_fl, target_flock_addr, 1);
6986 return 0;
6987 }
6988
6989 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6990 {
6991 struct flock64 fl64;
6992 #ifdef F_GETOWN_EX
6993 struct f_owner_ex fox;
6994 struct target_f_owner_ex *target_fox;
6995 #endif
6996 abi_long ret;
6997 int host_cmd = target_to_host_fcntl_cmd(cmd);
6998
6999 if (host_cmd == -TARGET_EINVAL)
7000 return host_cmd;
7001
7002 switch(cmd) {
7003 case TARGET_F_GETLK:
7004 ret = copy_from_user_flock(&fl64, arg);
7005 if (ret) {
7006 return ret;
7007 }
7008 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7009 if (ret == 0) {
7010 ret = copy_to_user_flock(arg, &fl64);
7011 }
7012 break;
7013
7014 case TARGET_F_SETLK:
7015 case TARGET_F_SETLKW:
7016 ret = copy_from_user_flock(&fl64, arg);
7017 if (ret) {
7018 return ret;
7019 }
7020 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7021 break;
7022
7023 case TARGET_F_GETLK64:
7024 case TARGET_F_OFD_GETLK:
7025 ret = copy_from_user_flock64(&fl64, arg);
7026 if (ret) {
7027 return ret;
7028 }
7029 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7030 if (ret == 0) {
7031 ret = copy_to_user_flock64(arg, &fl64);
7032 }
7033 break;
7034 case TARGET_F_SETLK64:
7035 case TARGET_F_SETLKW64:
7036 case TARGET_F_OFD_SETLK:
7037 case TARGET_F_OFD_SETLKW:
7038 ret = copy_from_user_flock64(&fl64, arg);
7039 if (ret) {
7040 return ret;
7041 }
7042 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7043 break;
7044
7045 case TARGET_F_GETFL:
7046 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7047 if (ret >= 0) {
7048 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
7049 /* tell 32-bit guests it uses largefile on 64-bit hosts: */
7050 if (O_LARGEFILE == 0 && HOST_LONG_BITS == 64) {
7051 ret |= TARGET_O_LARGEFILE;
7052 }
7053 }
7054 break;
7055
7056 case TARGET_F_SETFL:
7057 ret = get_errno(safe_fcntl(fd, host_cmd,
7058 target_to_host_bitmask(arg,
7059 fcntl_flags_tbl)));
7060 break;
7061
7062 #ifdef F_GETOWN_EX
7063 case TARGET_F_GETOWN_EX:
7064 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7065 if (ret >= 0) {
7066 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
7067 return -TARGET_EFAULT;
7068 target_fox->type = tswap32(fox.type);
7069 target_fox->pid = tswap32(fox.pid);
7070 unlock_user_struct(target_fox, arg, 1);
7071 }
7072 break;
7073 #endif
7074
7075 #ifdef F_SETOWN_EX
7076 case TARGET_F_SETOWN_EX:
7077 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
7078 return -TARGET_EFAULT;
7079 fox.type = tswap32(target_fox->type);
7080 fox.pid = tswap32(target_fox->pid);
7081 unlock_user_struct(target_fox, arg, 0);
7082 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7083 break;
7084 #endif
7085
7086 case TARGET_F_SETSIG:
7087 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg)));
7088 break;
7089
7090 case TARGET_F_GETSIG:
7091 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg)));
7092 break;
7093
7094 case TARGET_F_SETOWN:
7095 case TARGET_F_GETOWN:
7096 case TARGET_F_SETLEASE:
7097 case TARGET_F_GETLEASE:
7098 case TARGET_F_SETPIPE_SZ:
7099 case TARGET_F_GETPIPE_SZ:
7100 case TARGET_F_ADD_SEALS:
7101 case TARGET_F_GET_SEALS:
7102 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7103 break;
7104
7105 default:
7106 ret = get_errno(safe_fcntl(fd, cmd, arg));
7107 break;
7108 }
7109 return ret;
7110 }
7111
7112 #ifdef USE_UID16
7113
7114 static inline int high2lowuid(int uid)
7115 {
7116 if (uid > 65535)
7117 return 65534;
7118 else
7119 return uid;
7120 }
7121
7122 static inline int high2lowgid(int gid)
7123 {
7124 if (gid > 65535)
7125 return 65534;
7126 else
7127 return gid;
7128 }
7129
7130 static inline int low2highuid(int uid)
7131 {
7132 if ((int16_t)uid == -1)
7133 return -1;
7134 else
7135 return uid;
7136 }
7137
7138 static inline int low2highgid(int gid)
7139 {
7140 if ((int16_t)gid == -1)
7141 return -1;
7142 else
7143 return gid;
7144 }
7145 static inline int tswapid(int id)
7146 {
7147 return tswap16(id);
7148 }
7149
7150 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
7151
7152 #else /* !USE_UID16 */
7153 static inline int high2lowuid(int uid)
7154 {
7155 return uid;
7156 }
7157 static inline int high2lowgid(int gid)
7158 {
7159 return gid;
7160 }
7161 static inline int low2highuid(int uid)
7162 {
7163 return uid;
7164 }
7165 static inline int low2highgid(int gid)
7166 {
7167 return gid;
7168 }
7169 static inline int tswapid(int id)
7170 {
7171 return tswap32(id);
7172 }
7173
7174 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
7175
7176 #endif /* USE_UID16 */
7177
7178 /* We must do direct syscalls for setting UID/GID, because we want to
7179 * implement the Linux system call semantics of "change only for this thread",
7180 * not the libc/POSIX semantics of "change for all threads in process".
7181 * (See http://ewontfix.com/17/ for more details.)
7182 * We use the 32-bit version of the syscalls if present; if it is not
7183 * then either the host architecture supports 32-bit UIDs natively with
7184 * the standard syscall, or the 16-bit UID is the best we can do.
7185 */
7186 #ifdef __NR_setuid32
7187 #define __NR_sys_setuid __NR_setuid32
7188 #else
7189 #define __NR_sys_setuid __NR_setuid
7190 #endif
7191 #ifdef __NR_setgid32
7192 #define __NR_sys_setgid __NR_setgid32
7193 #else
7194 #define __NR_sys_setgid __NR_setgid
7195 #endif
7196 #ifdef __NR_setresuid32
7197 #define __NR_sys_setresuid __NR_setresuid32
7198 #else
7199 #define __NR_sys_setresuid __NR_setresuid
7200 #endif
7201 #ifdef __NR_setresgid32
7202 #define __NR_sys_setresgid __NR_setresgid32
7203 #else
7204 #define __NR_sys_setresgid __NR_setresgid
7205 #endif
7206
7207 _syscall1(int, sys_setuid, uid_t, uid)
7208 _syscall1(int, sys_setgid, gid_t, gid)
7209 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
7210 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
7211
7212 void syscall_init(void)
7213 {
7214 IOCTLEntry *ie;
7215 const argtype *arg_type;
7216 int size;
7217
7218 thunk_init(STRUCT_MAX);
7219
7220 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
7221 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
7222 #include "syscall_types.h"
7223 #undef STRUCT
7224 #undef STRUCT_SPECIAL
7225
7226 /* we patch the ioctl size if necessary. We rely on the fact that
7227 no ioctl has all the bits at '1' in the size field */
7228 ie = ioctl_entries;
7229 while (ie->target_cmd != 0) {
7230 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
7231 TARGET_IOC_SIZEMASK) {
7232 arg_type = ie->arg_type;
7233 if (arg_type[0] != TYPE_PTR) {
7234 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
7235 ie->target_cmd);
7236 exit(1);
7237 }
7238 arg_type++;
7239 size = thunk_type_size(arg_type, 0);
7240 ie->target_cmd = (ie->target_cmd &
7241 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
7242 (size << TARGET_IOC_SIZESHIFT);
7243 }
7244
7245 /* automatic consistency check if same arch */
7246 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
7247 (defined(__x86_64__) && defined(TARGET_X86_64))
7248 if (unlikely(ie->target_cmd != ie->host_cmd)) {
7249 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
7250 ie->name, ie->target_cmd, ie->host_cmd);
7251 }
7252 #endif
7253 ie++;
7254 }
7255 }
7256
7257 #ifdef TARGET_NR_truncate64
7258 static inline abi_long target_truncate64(CPUArchState *cpu_env, const char *arg1,
7259 abi_long arg2,
7260 abi_long arg3,
7261 abi_long arg4)
7262 {
7263 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
7264 arg2 = arg3;
7265 arg3 = arg4;
7266 }
7267 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
7268 }
7269 #endif
7270
7271 #ifdef TARGET_NR_ftruncate64
7272 static inline abi_long target_ftruncate64(CPUArchState *cpu_env, abi_long arg1,
7273 abi_long arg2,
7274 abi_long arg3,
7275 abi_long arg4)
7276 {
7277 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
7278 arg2 = arg3;
7279 arg3 = arg4;
7280 }
7281 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
7282 }
7283 #endif
7284
7285 #if defined(TARGET_NR_timer_settime) || \
7286 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
7287 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its,
7288 abi_ulong target_addr)
7289 {
7290 if (target_to_host_timespec(&host_its->it_interval, target_addr +
7291 offsetof(struct target_itimerspec,
7292 it_interval)) ||
7293 target_to_host_timespec(&host_its->it_value, target_addr +
7294 offsetof(struct target_itimerspec,
7295 it_value))) {
7296 return -TARGET_EFAULT;
7297 }
7298
7299 return 0;
7300 }
7301 #endif
7302
7303 #if defined(TARGET_NR_timer_settime64) || \
7304 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD))
7305 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its,
7306 abi_ulong target_addr)
7307 {
7308 if (target_to_host_timespec64(&host_its->it_interval, target_addr +
7309 offsetof(struct target__kernel_itimerspec,
7310 it_interval)) ||
7311 target_to_host_timespec64(&host_its->it_value, target_addr +
7312 offsetof(struct target__kernel_itimerspec,
7313 it_value))) {
7314 return -TARGET_EFAULT;
7315 }
7316
7317 return 0;
7318 }
7319 #endif
7320
7321 #if ((defined(TARGET_NR_timerfd_gettime) || \
7322 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
7323 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
7324 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
7325 struct itimerspec *host_its)
7326 {
7327 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7328 it_interval),
7329 &host_its->it_interval) ||
7330 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7331 it_value),
7332 &host_its->it_value)) {
7333 return -TARGET_EFAULT;
7334 }
7335 return 0;
7336 }
7337 #endif
7338
7339 #if ((defined(TARGET_NR_timerfd_gettime64) || \
7340 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \
7341 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64)
7342 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr,
7343 struct itimerspec *host_its)
7344 {
7345 if (host_to_target_timespec64(target_addr +
7346 offsetof(struct target__kernel_itimerspec,
7347 it_interval),
7348 &host_its->it_interval) ||
7349 host_to_target_timespec64(target_addr +
7350 offsetof(struct target__kernel_itimerspec,
7351 it_value),
7352 &host_its->it_value)) {
7353 return -TARGET_EFAULT;
7354 }
7355 return 0;
7356 }
7357 #endif
7358
7359 #if defined(TARGET_NR_adjtimex) || \
7360 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
7361 static inline abi_long target_to_host_timex(struct timex *host_tx,
7362 abi_long target_addr)
7363 {
7364 struct target_timex *target_tx;
7365
7366 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7367 return -TARGET_EFAULT;
7368 }
7369
7370 __get_user(host_tx->modes, &target_tx->modes);
7371 __get_user(host_tx->offset, &target_tx->offset);
7372 __get_user(host_tx->freq, &target_tx->freq);
7373 __get_user(host_tx->maxerror, &target_tx->maxerror);
7374 __get_user(host_tx->esterror, &target_tx->esterror);
7375 __get_user(host_tx->status, &target_tx->status);
7376 __get_user(host_tx->constant, &target_tx->constant);
7377 __get_user(host_tx->precision, &target_tx->precision);
7378 __get_user(host_tx->tolerance, &target_tx->tolerance);
7379 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7380 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7381 __get_user(host_tx->tick, &target_tx->tick);
7382 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7383 __get_user(host_tx->jitter, &target_tx->jitter);
7384 __get_user(host_tx->shift, &target_tx->shift);
7385 __get_user(host_tx->stabil, &target_tx->stabil);
7386 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7387 __get_user(host_tx->calcnt, &target_tx->calcnt);
7388 __get_user(host_tx->errcnt, &target_tx->errcnt);
7389 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7390 __get_user(host_tx->tai, &target_tx->tai);
7391
7392 unlock_user_struct(target_tx, target_addr, 0);
7393 return 0;
7394 }
7395
7396 static inline abi_long host_to_target_timex(abi_long target_addr,
7397 struct timex *host_tx)
7398 {
7399 struct target_timex *target_tx;
7400
7401 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7402 return -TARGET_EFAULT;
7403 }
7404
7405 __put_user(host_tx->modes, &target_tx->modes);
7406 __put_user(host_tx->offset, &target_tx->offset);
7407 __put_user(host_tx->freq, &target_tx->freq);
7408 __put_user(host_tx->maxerror, &target_tx->maxerror);
7409 __put_user(host_tx->esterror, &target_tx->esterror);
7410 __put_user(host_tx->status, &target_tx->status);
7411 __put_user(host_tx->constant, &target_tx->constant);
7412 __put_user(host_tx->precision, &target_tx->precision);
7413 __put_user(host_tx->tolerance, &target_tx->tolerance);
7414 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7415 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7416 __put_user(host_tx->tick, &target_tx->tick);
7417 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7418 __put_user(host_tx->jitter, &target_tx->jitter);
7419 __put_user(host_tx->shift, &target_tx->shift);
7420 __put_user(host_tx->stabil, &target_tx->stabil);
7421 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7422 __put_user(host_tx->calcnt, &target_tx->calcnt);
7423 __put_user(host_tx->errcnt, &target_tx->errcnt);
7424 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7425 __put_user(host_tx->tai, &target_tx->tai);
7426
7427 unlock_user_struct(target_tx, target_addr, 1);
7428 return 0;
7429 }
7430 #endif
7431
7432
7433 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
7434 static inline abi_long target_to_host_timex64(struct timex *host_tx,
7435 abi_long target_addr)
7436 {
7437 struct target__kernel_timex *target_tx;
7438
7439 if (copy_from_user_timeval64(&host_tx->time, target_addr +
7440 offsetof(struct target__kernel_timex,
7441 time))) {
7442 return -TARGET_EFAULT;
7443 }
7444
7445 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7446 return -TARGET_EFAULT;
7447 }
7448
7449 __get_user(host_tx->modes, &target_tx->modes);
7450 __get_user(host_tx->offset, &target_tx->offset);
7451 __get_user(host_tx->freq, &target_tx->freq);
7452 __get_user(host_tx->maxerror, &target_tx->maxerror);
7453 __get_user(host_tx->esterror, &target_tx->esterror);
7454 __get_user(host_tx->status, &target_tx->status);
7455 __get_user(host_tx->constant, &target_tx->constant);
7456 __get_user(host_tx->precision, &target_tx->precision);
7457 __get_user(host_tx->tolerance, &target_tx->tolerance);
7458 __get_user(host_tx->tick, &target_tx->tick);
7459 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7460 __get_user(host_tx->jitter, &target_tx->jitter);
7461 __get_user(host_tx->shift, &target_tx->shift);
7462 __get_user(host_tx->stabil, &target_tx->stabil);
7463 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7464 __get_user(host_tx->calcnt, &target_tx->calcnt);
7465 __get_user(host_tx->errcnt, &target_tx->errcnt);
7466 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7467 __get_user(host_tx->tai, &target_tx->tai);
7468
7469 unlock_user_struct(target_tx, target_addr, 0);
7470 return 0;
7471 }
7472
7473 static inline abi_long host_to_target_timex64(abi_long target_addr,
7474 struct timex *host_tx)
7475 {
7476 struct target__kernel_timex *target_tx;
7477
7478 if (copy_to_user_timeval64(target_addr +
7479 offsetof(struct target__kernel_timex, time),
7480 &host_tx->time)) {
7481 return -TARGET_EFAULT;
7482 }
7483
7484 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7485 return -TARGET_EFAULT;
7486 }
7487
7488 __put_user(host_tx->modes, &target_tx->modes);
7489 __put_user(host_tx->offset, &target_tx->offset);
7490 __put_user(host_tx->freq, &target_tx->freq);
7491 __put_user(host_tx->maxerror, &target_tx->maxerror);
7492 __put_user(host_tx->esterror, &target_tx->esterror);
7493 __put_user(host_tx->status, &target_tx->status);
7494 __put_user(host_tx->constant, &target_tx->constant);
7495 __put_user(host_tx->precision, &target_tx->precision);
7496 __put_user(host_tx->tolerance, &target_tx->tolerance);
7497 __put_user(host_tx->tick, &target_tx->tick);
7498 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7499 __put_user(host_tx->jitter, &target_tx->jitter);
7500 __put_user(host_tx->shift, &target_tx->shift);
7501 __put_user(host_tx->stabil, &target_tx->stabil);
7502 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7503 __put_user(host_tx->calcnt, &target_tx->calcnt);
7504 __put_user(host_tx->errcnt, &target_tx->errcnt);
7505 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7506 __put_user(host_tx->tai, &target_tx->tai);
7507
7508 unlock_user_struct(target_tx, target_addr, 1);
7509 return 0;
7510 }
7511 #endif
7512
7513 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID
7514 #define sigev_notify_thread_id _sigev_un._tid
7515 #endif
7516
7517 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
7518 abi_ulong target_addr)
7519 {
7520 struct target_sigevent *target_sevp;
7521
7522 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
7523 return -TARGET_EFAULT;
7524 }
7525
7526 /* This union is awkward on 64 bit systems because it has a 32 bit
7527 * integer and a pointer in it; we follow the conversion approach
7528 * used for handling sigval types in signal.c so the guest should get
7529 * the correct value back even if we did a 64 bit byteswap and it's
7530 * using the 32 bit integer.
7531 */
7532 host_sevp->sigev_value.sival_ptr =
7533 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
7534 host_sevp->sigev_signo =
7535 target_to_host_signal(tswap32(target_sevp->sigev_signo));
7536 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
7537 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid);
7538
7539 unlock_user_struct(target_sevp, target_addr, 1);
7540 return 0;
7541 }
7542
7543 #if defined(TARGET_NR_mlockall)
7544 static inline int target_to_host_mlockall_arg(int arg)
7545 {
7546 int result = 0;
7547
7548 if (arg & TARGET_MCL_CURRENT) {
7549 result |= MCL_CURRENT;
7550 }
7551 if (arg & TARGET_MCL_FUTURE) {
7552 result |= MCL_FUTURE;
7553 }
7554 #ifdef MCL_ONFAULT
7555 if (arg & TARGET_MCL_ONFAULT) {
7556 result |= MCL_ONFAULT;
7557 }
7558 #endif
7559
7560 return result;
7561 }
7562 #endif
7563
7564 static inline int target_to_host_msync_arg(abi_long arg)
7565 {
7566 return ((arg & TARGET_MS_ASYNC) ? MS_ASYNC : 0) |
7567 ((arg & TARGET_MS_INVALIDATE) ? MS_INVALIDATE : 0) |
7568 ((arg & TARGET_MS_SYNC) ? MS_SYNC : 0) |
7569 (arg & ~(TARGET_MS_ASYNC | TARGET_MS_INVALIDATE | TARGET_MS_SYNC));
7570 }
7571
7572 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
7573 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
7574 defined(TARGET_NR_newfstatat))
7575 static inline abi_long host_to_target_stat64(CPUArchState *cpu_env,
7576 abi_ulong target_addr,
7577 struct stat *host_st)
7578 {
7579 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
7580 if (cpu_env->eabi) {
7581 struct target_eabi_stat64 *target_st;
7582
7583 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7584 return -TARGET_EFAULT;
7585 memset(target_st, 0, sizeof(struct target_eabi_stat64));
7586 __put_user(host_st->st_dev, &target_st->st_dev);
7587 __put_user(host_st->st_ino, &target_st->st_ino);
7588 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7589 __put_user(host_st->st_ino, &target_st->__st_ino);
7590 #endif
7591 __put_user(host_st->st_mode, &target_st->st_mode);
7592 __put_user(host_st->st_nlink, &target_st->st_nlink);
7593 __put_user(host_st->st_uid, &target_st->st_uid);
7594 __put_user(host_st->st_gid, &target_st->st_gid);
7595 __put_user(host_st->st_rdev, &target_st->st_rdev);
7596 __put_user(host_st->st_size, &target_st->st_size);
7597 __put_user(host_st->st_blksize, &target_st->st_blksize);
7598 __put_user(host_st->st_blocks, &target_st->st_blocks);
7599 __put_user(host_st->st_atime, &target_st->target_st_atime);
7600 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7601 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7602 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7603 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7604 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7605 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7606 #endif
7607 unlock_user_struct(target_st, target_addr, 1);
7608 } else
7609 #endif
7610 {
7611 #if defined(TARGET_HAS_STRUCT_STAT64)
7612 struct target_stat64 *target_st;
7613 #else
7614 struct target_stat *target_st;
7615 #endif
7616
7617 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7618 return -TARGET_EFAULT;
7619 memset(target_st, 0, sizeof(*target_st));
7620 __put_user(host_st->st_dev, &target_st->st_dev);
7621 __put_user(host_st->st_ino, &target_st->st_ino);
7622 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7623 __put_user(host_st->st_ino, &target_st->__st_ino);
7624 #endif
7625 __put_user(host_st->st_mode, &target_st->st_mode);
7626 __put_user(host_st->st_nlink, &target_st->st_nlink);
7627 __put_user(host_st->st_uid, &target_st->st_uid);
7628 __put_user(host_st->st_gid, &target_st->st_gid);
7629 __put_user(host_st->st_rdev, &target_st->st_rdev);
7630 /* XXX: better use of kernel struct */
7631 __put_user(host_st->st_size, &target_st->st_size);
7632 __put_user(host_st->st_blksize, &target_st->st_blksize);
7633 __put_user(host_st->st_blocks, &target_st->st_blocks);
7634 __put_user(host_st->st_atime, &target_st->target_st_atime);
7635 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7636 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7637 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7638 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7639 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7640 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7641 #endif
7642 unlock_user_struct(target_st, target_addr, 1);
7643 }
7644
7645 return 0;
7646 }
7647 #endif
7648
7649 #if defined(TARGET_NR_statx) && defined(__NR_statx)
7650 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
7651 abi_ulong target_addr)
7652 {
7653 struct target_statx *target_stx;
7654
7655 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
7656 return -TARGET_EFAULT;
7657 }
7658 memset(target_stx, 0, sizeof(*target_stx));
7659
7660 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
7661 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
7662 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
7663 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
7664 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
7665 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
7666 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
7667 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
7668 __put_user(host_stx->stx_size, &target_stx->stx_size);
7669 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
7670 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
7671 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
7672 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
7673 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
7674 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
7675 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
7676 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
7677 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
7678 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
7679 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
7680 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
7681 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
7682 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
7683
7684 unlock_user_struct(target_stx, target_addr, 1);
7685
7686 return 0;
7687 }
7688 #endif
7689
7690 static int do_sys_futex(int *uaddr, int op, int val,
7691 const struct timespec *timeout, int *uaddr2,
7692 int val3)
7693 {
7694 #if HOST_LONG_BITS == 64
7695 #if defined(__NR_futex)
7696 /* always a 64-bit time_t, it doesn't define _time64 version */
7697 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7698
7699 #endif
7700 #else /* HOST_LONG_BITS == 64 */
7701 #if defined(__NR_futex_time64)
7702 if (sizeof(timeout->tv_sec) == 8) {
7703 /* _time64 function on 32bit arch */
7704 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
7705 }
7706 #endif
7707 #if defined(__NR_futex)
7708 /* old function on 32bit arch */
7709 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7710 #endif
7711 #endif /* HOST_LONG_BITS == 64 */
7712 g_assert_not_reached();
7713 }
7714
7715 static int do_safe_futex(int *uaddr, int op, int val,
7716 const struct timespec *timeout, int *uaddr2,
7717 int val3)
7718 {
7719 #if HOST_LONG_BITS == 64
7720 #if defined(__NR_futex)
7721 /* always a 64-bit time_t, it doesn't define _time64 version */
7722 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7723 #endif
7724 #else /* HOST_LONG_BITS == 64 */
7725 #if defined(__NR_futex_time64)
7726 if (sizeof(timeout->tv_sec) == 8) {
7727 /* _time64 function on 32bit arch */
7728 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
7729 val3));
7730 }
7731 #endif
7732 #if defined(__NR_futex)
7733 /* old function on 32bit arch */
7734 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7735 #endif
7736 #endif /* HOST_LONG_BITS == 64 */
7737 return -TARGET_ENOSYS;
7738 }
7739
7740 /* ??? Using host futex calls even when target atomic operations
7741 are not really atomic probably breaks things. However implementing
7742 futexes locally would make futexes shared between multiple processes
7743 tricky. However they're probably useless because guest atomic
7744 operations won't work either. */
7745 #if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64)
7746 static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr,
7747 int op, int val, target_ulong timeout,
7748 target_ulong uaddr2, int val3)
7749 {
7750 struct timespec ts, *pts = NULL;
7751 void *haddr2 = NULL;
7752 int base_op;
7753
7754 /* We assume FUTEX_* constants are the same on both host and target. */
7755 #ifdef FUTEX_CMD_MASK
7756 base_op = op & FUTEX_CMD_MASK;
7757 #else
7758 base_op = op;
7759 #endif
7760 switch (base_op) {
7761 case FUTEX_WAIT:
7762 case FUTEX_WAIT_BITSET:
7763 val = tswap32(val);
7764 break;
7765 case FUTEX_WAIT_REQUEUE_PI:
7766 val = tswap32(val);
7767 haddr2 = g2h(cpu, uaddr2);
7768 break;
7769 case FUTEX_LOCK_PI:
7770 case FUTEX_LOCK_PI2:
7771 break;
7772 case FUTEX_WAKE:
7773 case FUTEX_WAKE_BITSET:
7774 case FUTEX_TRYLOCK_PI:
7775 case FUTEX_UNLOCK_PI:
7776 timeout = 0;
7777 break;
7778 case FUTEX_FD:
7779 val = target_to_host_signal(val);
7780 timeout = 0;
7781 break;
7782 case FUTEX_CMP_REQUEUE:
7783 case FUTEX_CMP_REQUEUE_PI:
7784 val3 = tswap32(val3);
7785 /* fall through */
7786 case FUTEX_REQUEUE:
7787 case FUTEX_WAKE_OP:
7788 /*
7789 * For these, the 4th argument is not TIMEOUT, but VAL2.
7790 * But the prototype of do_safe_futex takes a pointer, so
7791 * insert casts to satisfy the compiler. We do not need
7792 * to tswap VAL2 since it's not compared to guest memory.
7793 */
7794 pts = (struct timespec *)(uintptr_t)timeout;
7795 timeout = 0;
7796 haddr2 = g2h(cpu, uaddr2);
7797 break;
7798 default:
7799 return -TARGET_ENOSYS;
7800 }
7801 if (timeout) {
7802 pts = &ts;
7803 if (time64
7804 ? target_to_host_timespec64(pts, timeout)
7805 : target_to_host_timespec(pts, timeout)) {
7806 return -TARGET_EFAULT;
7807 }
7808 }
7809 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3);
7810 }
7811 #endif
7812
7813 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7814 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7815 abi_long handle, abi_long mount_id,
7816 abi_long flags)
7817 {
7818 struct file_handle *target_fh;
7819 struct file_handle *fh;
7820 int mid = 0;
7821 abi_long ret;
7822 char *name;
7823 unsigned int size, total_size;
7824
7825 if (get_user_s32(size, handle)) {
7826 return -TARGET_EFAULT;
7827 }
7828
7829 name = lock_user_string(pathname);
7830 if (!name) {
7831 return -TARGET_EFAULT;
7832 }
7833
7834 total_size = sizeof(struct file_handle) + size;
7835 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7836 if (!target_fh) {
7837 unlock_user(name, pathname, 0);
7838 return -TARGET_EFAULT;
7839 }
7840
7841 fh = g_malloc0(total_size);
7842 fh->handle_bytes = size;
7843
7844 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7845 unlock_user(name, pathname, 0);
7846
7847 /* man name_to_handle_at(2):
7848 * Other than the use of the handle_bytes field, the caller should treat
7849 * the file_handle structure as an opaque data type
7850 */
7851
7852 memcpy(target_fh, fh, total_size);
7853 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7854 target_fh->handle_type = tswap32(fh->handle_type);
7855 g_free(fh);
7856 unlock_user(target_fh, handle, total_size);
7857
7858 if (put_user_s32(mid, mount_id)) {
7859 return -TARGET_EFAULT;
7860 }
7861
7862 return ret;
7863
7864 }
7865 #endif
7866
7867 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7868 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7869 abi_long flags)
7870 {
7871 struct file_handle *target_fh;
7872 struct file_handle *fh;
7873 unsigned int size, total_size;
7874 abi_long ret;
7875
7876 if (get_user_s32(size, handle)) {
7877 return -TARGET_EFAULT;
7878 }
7879
7880 total_size = sizeof(struct file_handle) + size;
7881 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7882 if (!target_fh) {
7883 return -TARGET_EFAULT;
7884 }
7885
7886 fh = g_memdup(target_fh, total_size);
7887 fh->handle_bytes = size;
7888 fh->handle_type = tswap32(target_fh->handle_type);
7889
7890 ret = get_errno(open_by_handle_at(mount_fd, fh,
7891 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7892
7893 g_free(fh);
7894
7895 unlock_user(target_fh, handle, total_size);
7896
7897 return ret;
7898 }
7899 #endif
7900
7901 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7902
7903 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7904 {
7905 int host_flags;
7906 target_sigset_t *target_mask;
7907 sigset_t host_mask;
7908 abi_long ret;
7909
7910 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) {
7911 return -TARGET_EINVAL;
7912 }
7913 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7914 return -TARGET_EFAULT;
7915 }
7916
7917 target_to_host_sigset(&host_mask, target_mask);
7918
7919 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7920
7921 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7922 if (ret >= 0) {
7923 fd_trans_register(ret, &target_signalfd_trans);
7924 }
7925
7926 unlock_user_struct(target_mask, mask, 0);
7927
7928 return ret;
7929 }
7930 #endif
7931
7932 /* Map host to target signal numbers for the wait family of syscalls.
7933 Assume all other status bits are the same. */
7934 int host_to_target_waitstatus(int status)
7935 {
7936 if (WIFSIGNALED(status)) {
7937 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7938 }
7939 if (WIFSTOPPED(status)) {
7940 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7941 | (status & 0xff);
7942 }
7943 return status;
7944 }
7945
7946 static int open_self_cmdline(CPUArchState *cpu_env, int fd)
7947 {
7948 CPUState *cpu = env_cpu(cpu_env);
7949 struct linux_binprm *bprm = get_task_state(cpu)->bprm;
7950 int i;
7951
7952 for (i = 0; i < bprm->argc; i++) {
7953 size_t len = strlen(bprm->argv[i]) + 1;
7954
7955 if (write(fd, bprm->argv[i], len) != len) {
7956 return -1;
7957 }
7958 }
7959
7960 return 0;
7961 }
7962
7963 struct open_self_maps_data {
7964 TaskState *ts;
7965 IntervalTreeRoot *host_maps;
7966 int fd;
7967 bool smaps;
7968 };
7969
7970 /*
7971 * Subroutine to output one line of /proc/self/maps,
7972 * or one region of /proc/self/smaps.
7973 */
7974
7975 #ifdef TARGET_HPPA
7976 # define test_stack(S, E, L) (E == L)
7977 #else
7978 # define test_stack(S, E, L) (S == L)
7979 #endif
7980
7981 static void open_self_maps_4(const struct open_self_maps_data *d,
7982 const MapInfo *mi, abi_ptr start,
7983 abi_ptr end, unsigned flags)
7984 {
7985 const struct image_info *info = d->ts->info;
7986 const char *path = mi->path;
7987 uint64_t offset;
7988 int fd = d->fd;
7989 int count;
7990
7991 if (test_stack(start, end, info->stack_limit)) {
7992 path = "[stack]";
7993 } else if (start == info->brk) {
7994 path = "[heap]";
7995 } else if (start == info->vdso) {
7996 path = "[vdso]";
7997 #ifdef TARGET_X86_64
7998 } else if (start == TARGET_VSYSCALL_PAGE) {
7999 path = "[vsyscall]";
8000 #endif
8001 }
8002
8003 /* Except null device (MAP_ANON), adjust offset for this fragment. */
8004 offset = mi->offset;
8005 if (mi->dev) {
8006 uintptr_t hstart = (uintptr_t)g2h_untagged(start);
8007 offset += hstart - mi->itree.start;
8008 }
8009
8010 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
8011 " %c%c%c%c %08" PRIx64 " %02x:%02x %"PRId64,
8012 start, end,
8013 (flags & PAGE_READ) ? 'r' : '-',
8014 (flags & PAGE_WRITE_ORG) ? 'w' : '-',
8015 (flags & PAGE_EXEC) ? 'x' : '-',
8016 mi->is_priv ? 'p' : 's',
8017 offset, major(mi->dev), minor(mi->dev),
8018 (uint64_t)mi->inode);
8019 if (path) {
8020 dprintf(fd, "%*s%s\n", 73 - count, "", path);
8021 } else {
8022 dprintf(fd, "\n");
8023 }
8024
8025 if (d->smaps) {
8026 unsigned long size = end - start;
8027 unsigned long page_size_kb = TARGET_PAGE_SIZE >> 10;
8028 unsigned long size_kb = size >> 10;
8029
8030 dprintf(fd, "Size: %lu kB\n"
8031 "KernelPageSize: %lu kB\n"
8032 "MMUPageSize: %lu kB\n"
8033 "Rss: 0 kB\n"
8034 "Pss: 0 kB\n"
8035 "Pss_Dirty: 0 kB\n"
8036 "Shared_Clean: 0 kB\n"
8037 "Shared_Dirty: 0 kB\n"
8038 "Private_Clean: 0 kB\n"
8039 "Private_Dirty: 0 kB\n"
8040 "Referenced: 0 kB\n"
8041 "Anonymous: %lu kB\n"
8042 "LazyFree: 0 kB\n"
8043 "AnonHugePages: 0 kB\n"
8044 "ShmemPmdMapped: 0 kB\n"
8045 "FilePmdMapped: 0 kB\n"
8046 "Shared_Hugetlb: 0 kB\n"
8047 "Private_Hugetlb: 0 kB\n"
8048 "Swap: 0 kB\n"
8049 "SwapPss: 0 kB\n"
8050 "Locked: 0 kB\n"
8051 "THPeligible: 0\n"
8052 "VmFlags:%s%s%s%s%s%s%s%s\n",
8053 size_kb, page_size_kb, page_size_kb,
8054 (flags & PAGE_ANON ? size_kb : 0),
8055 (flags & PAGE_READ) ? " rd" : "",
8056 (flags & PAGE_WRITE_ORG) ? " wr" : "",
8057 (flags & PAGE_EXEC) ? " ex" : "",
8058 mi->is_priv ? "" : " sh",
8059 (flags & PAGE_READ) ? " mr" : "",
8060 (flags & PAGE_WRITE_ORG) ? " mw" : "",
8061 (flags & PAGE_EXEC) ? " me" : "",
8062 mi->is_priv ? "" : " ms");
8063 }
8064 }
8065
8066 /*
8067 * Callback for walk_memory_regions, when read_self_maps() fails.
8068 * Proceed without the benefit of host /proc/self/maps cross-check.
8069 */
8070 static int open_self_maps_3(void *opaque, target_ulong guest_start,
8071 target_ulong guest_end, unsigned long flags)
8072 {
8073 static const MapInfo mi = { .is_priv = true };
8074
8075 open_self_maps_4(opaque, &mi, guest_start, guest_end, flags);
8076 return 0;
8077 }
8078
8079 /*
8080 * Callback for walk_memory_regions, when read_self_maps() succeeds.
8081 */
8082 static int open_self_maps_2(void *opaque, target_ulong guest_start,
8083 target_ulong guest_end, unsigned long flags)
8084 {
8085 const struct open_self_maps_data *d = opaque;
8086 uintptr_t host_start = (uintptr_t)g2h_untagged(guest_start);
8087 uintptr_t host_last = (uintptr_t)g2h_untagged(guest_end - 1);
8088
8089 #ifdef TARGET_X86_64
8090 /*
8091 * Because of the extremely high position of the page within the guest
8092 * virtual address space, this is not backed by host memory at all.
8093 * Therefore the loop below would fail. This is the only instance
8094 * of not having host backing memory.
8095 */
8096 if (guest_start == TARGET_VSYSCALL_PAGE) {
8097 return open_self_maps_3(opaque, guest_start, guest_end, flags);
8098 }
8099 #endif
8100
8101 while (1) {
8102 IntervalTreeNode *n =
8103 interval_tree_iter_first(d->host_maps, host_start, host_start);
8104 MapInfo *mi = container_of(n, MapInfo, itree);
8105 uintptr_t this_hlast = MIN(host_last, n->last);
8106 target_ulong this_gend = h2g(this_hlast) + 1;
8107
8108 open_self_maps_4(d, mi, guest_start, this_gend, flags);
8109
8110 if (this_hlast == host_last) {
8111 return 0;
8112 }
8113 host_start = this_hlast + 1;
8114 guest_start = h2g(host_start);
8115 }
8116 }
8117
8118 static int open_self_maps_1(CPUArchState *env, int fd, bool smaps)
8119 {
8120 struct open_self_maps_data d = {
8121 .ts = env_cpu(env)->opaque,
8122 .host_maps = read_self_maps(),
8123 .fd = fd,
8124 .smaps = smaps
8125 };
8126
8127 if (d.host_maps) {
8128 walk_memory_regions(&d, open_self_maps_2);
8129 free_self_maps(d.host_maps);
8130 } else {
8131 walk_memory_regions(&d, open_self_maps_3);
8132 }
8133 return 0;
8134 }
8135
8136 static int open_self_maps(CPUArchState *cpu_env, int fd)
8137 {
8138 return open_self_maps_1(cpu_env, fd, false);
8139 }
8140
8141 static int open_self_smaps(CPUArchState *cpu_env, int fd)
8142 {
8143 return open_self_maps_1(cpu_env, fd, true);
8144 }
8145
8146 static int open_self_stat(CPUArchState *cpu_env, int fd)
8147 {
8148 CPUState *cpu = env_cpu(cpu_env);
8149 TaskState *ts = get_task_state(cpu);
8150 g_autoptr(GString) buf = g_string_new(NULL);
8151 int i;
8152
8153 for (i = 0; i < 44; i++) {
8154 if (i == 0) {
8155 /* pid */
8156 g_string_printf(buf, FMT_pid " ", getpid());
8157 } else if (i == 1) {
8158 /* app name */
8159 gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
8160 bin = bin ? bin + 1 : ts->bprm->argv[0];
8161 g_string_printf(buf, "(%.15s) ", bin);
8162 } else if (i == 2) {
8163 /* task state */
8164 g_string_assign(buf, "R "); /* we are running right now */
8165 } else if (i == 3) {
8166 /* ppid */
8167 g_string_printf(buf, FMT_pid " ", getppid());
8168 } else if (i == 21) {
8169 /* starttime */
8170 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime);
8171 } else if (i == 27) {
8172 /* stack bottom */
8173 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
8174 } else {
8175 /* for the rest, there is MasterCard */
8176 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
8177 }
8178
8179 if (write(fd, buf->str, buf->len) != buf->len) {
8180 return -1;
8181 }
8182 }
8183
8184 return 0;
8185 }
8186
8187 static int open_self_auxv(CPUArchState *cpu_env, int fd)
8188 {
8189 CPUState *cpu = env_cpu(cpu_env);
8190 TaskState *ts = get_task_state(cpu);
8191 abi_ulong auxv = ts->info->saved_auxv;
8192 abi_ulong len = ts->info->auxv_len;
8193 char *ptr;
8194
8195 /*
8196 * Auxiliary vector is stored in target process stack.
8197 * read in whole auxv vector and copy it to file
8198 */
8199 ptr = lock_user(VERIFY_READ, auxv, len, 0);
8200 if (ptr != NULL) {
8201 while (len > 0) {
8202 ssize_t r;
8203 r = write(fd, ptr, len);
8204 if (r <= 0) {
8205 break;
8206 }
8207 len -= r;
8208 ptr += r;
8209 }
8210 lseek(fd, 0, SEEK_SET);
8211 unlock_user(ptr, auxv, len);
8212 }
8213
8214 return 0;
8215 }
8216
8217 static int is_proc_myself(const char *filename, const char *entry)
8218 {
8219 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
8220 filename += strlen("/proc/");
8221 if (!strncmp(filename, "self/", strlen("self/"))) {
8222 filename += strlen("self/");
8223 } else if (*filename >= '1' && *filename <= '9') {
8224 char myself[80];
8225 snprintf(myself, sizeof(myself), "%d/", getpid());
8226 if (!strncmp(filename, myself, strlen(myself))) {
8227 filename += strlen(myself);
8228 } else {
8229 return 0;
8230 }
8231 } else {
8232 return 0;
8233 }
8234 if (!strcmp(filename, entry)) {
8235 return 1;
8236 }
8237 }
8238 return 0;
8239 }
8240
8241 static void excp_dump_file(FILE *logfile, CPUArchState *env,
8242 const char *fmt, int code)
8243 {
8244 if (logfile) {
8245 CPUState *cs = env_cpu(env);
8246
8247 fprintf(logfile, fmt, code);
8248 fprintf(logfile, "Failing executable: %s\n", exec_path);
8249 cpu_dump_state(cs, logfile, 0);
8250 open_self_maps(env, fileno(logfile));
8251 }
8252 }
8253
8254 void target_exception_dump(CPUArchState *env, const char *fmt, int code)
8255 {
8256 /* dump to console */
8257 excp_dump_file(stderr, env, fmt, code);
8258
8259 /* dump to log file */
8260 if (qemu_log_separate()) {
8261 FILE *logfile = qemu_log_trylock();
8262
8263 excp_dump_file(logfile, env, fmt, code);
8264 qemu_log_unlock(logfile);
8265 }
8266 }
8267
8268 #include "target_proc.h"
8269
8270 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
8271 defined(HAVE_ARCH_PROC_CPUINFO) || \
8272 defined(HAVE_ARCH_PROC_HARDWARE)
8273 static int is_proc(const char *filename, const char *entry)
8274 {
8275 return strcmp(filename, entry) == 0;
8276 }
8277 #endif
8278
8279 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
8280 static int open_net_route(CPUArchState *cpu_env, int fd)
8281 {
8282 FILE *fp;
8283 char *line = NULL;
8284 size_t len = 0;
8285 ssize_t read;
8286
8287 fp = fopen("/proc/net/route", "r");
8288 if (fp == NULL) {
8289 return -1;
8290 }
8291
8292 /* read header */
8293
8294 read = getline(&line, &len, fp);
8295 dprintf(fd, "%s", line);
8296
8297 /* read routes */
8298
8299 while ((read = getline(&line, &len, fp)) != -1) {
8300 char iface[16];
8301 uint32_t dest, gw, mask;
8302 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
8303 int fields;
8304
8305 fields = sscanf(line,
8306 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8307 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
8308 &mask, &mtu, &window, &irtt);
8309 if (fields != 11) {
8310 continue;
8311 }
8312 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8313 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
8314 metric, tswap32(mask), mtu, window, irtt);
8315 }
8316
8317 free(line);
8318 fclose(fp);
8319
8320 return 0;
8321 }
8322 #endif
8323
8324 int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *fname,
8325 int flags, mode_t mode, bool safe)
8326 {
8327 g_autofree char *proc_name = NULL;
8328 const char *pathname;
8329 struct fake_open {
8330 const char *filename;
8331 int (*fill)(CPUArchState *cpu_env, int fd);
8332 int (*cmp)(const char *s1, const char *s2);
8333 };
8334 const struct fake_open *fake_open;
8335 static const struct fake_open fakes[] = {
8336 { "maps", open_self_maps, is_proc_myself },
8337 { "smaps", open_self_smaps, is_proc_myself },
8338 { "stat", open_self_stat, is_proc_myself },
8339 { "auxv", open_self_auxv, is_proc_myself },
8340 { "cmdline", open_self_cmdline, is_proc_myself },
8341 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
8342 { "/proc/net/route", open_net_route, is_proc },
8343 #endif
8344 #if defined(HAVE_ARCH_PROC_CPUINFO)
8345 { "/proc/cpuinfo", open_cpuinfo, is_proc },
8346 #endif
8347 #if defined(HAVE_ARCH_PROC_HARDWARE)
8348 { "/proc/hardware", open_hardware, is_proc },
8349 #endif
8350 { NULL, NULL, NULL }
8351 };
8352
8353 /* if this is a file from /proc/ filesystem, expand full name */
8354 proc_name = realpath(fname, NULL);
8355 if (proc_name && strncmp(proc_name, "/proc/", 6) == 0) {
8356 pathname = proc_name;
8357 } else {
8358 pathname = fname;
8359 }
8360
8361 if (is_proc_myself(pathname, "exe")) {
8362 if (safe) {
8363 return safe_openat(dirfd, exec_path, flags, mode);
8364 } else {
8365 return openat(dirfd, exec_path, flags, mode);
8366 }
8367 }
8368
8369 for (fake_open = fakes; fake_open->filename; fake_open++) {
8370 if (fake_open->cmp(pathname, fake_open->filename)) {
8371 break;
8372 }
8373 }
8374
8375 if (fake_open->filename) {
8376 const char *tmpdir;
8377 char filename[PATH_MAX];
8378 int fd, r;
8379
8380 fd = memfd_create("qemu-open", 0);
8381 if (fd < 0) {
8382 if (errno != ENOSYS) {
8383 return fd;
8384 }
8385 /* create temporary file to map stat to */
8386 tmpdir = getenv("TMPDIR");
8387 if (!tmpdir)
8388 tmpdir = "/tmp";
8389 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
8390 fd = mkstemp(filename);
8391 if (fd < 0) {
8392 return fd;
8393 }
8394 unlink(filename);
8395 }
8396
8397 if ((r = fake_open->fill(cpu_env, fd))) {
8398 int e = errno;
8399 close(fd);
8400 errno = e;
8401 return r;
8402 }
8403 lseek(fd, 0, SEEK_SET);
8404
8405 return fd;
8406 }
8407
8408 if (safe) {
8409 return safe_openat(dirfd, path(pathname), flags, mode);
8410 } else {
8411 return openat(dirfd, path(pathname), flags, mode);
8412 }
8413 }
8414
8415 ssize_t do_guest_readlink(const char *pathname, char *buf, size_t bufsiz)
8416 {
8417 ssize_t ret;
8418
8419 if (!pathname || !buf) {
8420 errno = EFAULT;
8421 return -1;
8422 }
8423
8424 if (!bufsiz) {
8425 /* Short circuit this for the magic exe check. */
8426 errno = EINVAL;
8427 return -1;
8428 }
8429
8430 if (is_proc_myself((const char *)pathname, "exe")) {
8431 /*
8432 * Don't worry about sign mismatch as earlier mapping
8433 * logic would have thrown a bad address error.
8434 */
8435 ret = MIN(strlen(exec_path), bufsiz);
8436 /* We cannot NUL terminate the string. */
8437 memcpy(buf, exec_path, ret);
8438 } else {
8439 ret = readlink(path(pathname), buf, bufsiz);
8440 }
8441
8442 return ret;
8443 }
8444
8445 static int do_execv(CPUArchState *cpu_env, int dirfd,
8446 abi_long pathname, abi_long guest_argp,
8447 abi_long guest_envp, int flags, bool is_execveat)
8448 {
8449 int ret;
8450 char **argp, **envp;
8451 int argc, envc;
8452 abi_ulong gp;
8453 abi_ulong addr;
8454 char **q;
8455 void *p;
8456
8457 argc = 0;
8458
8459 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
8460 if (get_user_ual(addr, gp)) {
8461 return -TARGET_EFAULT;
8462 }
8463 if (!addr) {
8464 break;
8465 }
8466 argc++;
8467 }
8468 envc = 0;
8469 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
8470 if (get_user_ual(addr, gp)) {
8471 return -TARGET_EFAULT;
8472 }
8473 if (!addr) {
8474 break;
8475 }
8476 envc++;
8477 }
8478
8479 argp = g_new0(char *, argc + 1);
8480 envp = g_new0(char *, envc + 1);
8481
8482 for (gp = guest_argp, q = argp; gp; gp += sizeof(abi_ulong), q++) {
8483 if (get_user_ual(addr, gp)) {
8484 goto execve_efault;
8485 }
8486 if (!addr) {
8487 break;
8488 }
8489 *q = lock_user_string(addr);
8490 if (!*q) {
8491 goto execve_efault;
8492 }
8493 }
8494 *q = NULL;
8495
8496 for (gp = guest_envp, q = envp; gp; gp += sizeof(abi_ulong), q++) {
8497 if (get_user_ual(addr, gp)) {
8498 goto execve_efault;
8499 }
8500 if (!addr) {
8501 break;
8502 }
8503 *q = lock_user_string(addr);
8504 if (!*q) {
8505 goto execve_efault;
8506 }
8507 }
8508 *q = NULL;
8509
8510 /*
8511 * Although execve() is not an interruptible syscall it is
8512 * a special case where we must use the safe_syscall wrapper:
8513 * if we allow a signal to happen before we make the host
8514 * syscall then we will 'lose' it, because at the point of
8515 * execve the process leaves QEMU's control. So we use the
8516 * safe syscall wrapper to ensure that we either take the
8517 * signal as a guest signal, or else it does not happen
8518 * before the execve completes and makes it the other
8519 * program's problem.
8520 */
8521 p = lock_user_string(pathname);
8522 if (!p) {
8523 goto execve_efault;
8524 }
8525
8526 const char *exe = p;
8527 if (is_proc_myself(p, "exe")) {
8528 exe = exec_path;
8529 }
8530 ret = is_execveat
8531 ? safe_execveat(dirfd, exe, argp, envp, flags)
8532 : safe_execve(exe, argp, envp);
8533 ret = get_errno(ret);
8534
8535 unlock_user(p, pathname, 0);
8536
8537 goto execve_end;
8538
8539 execve_efault:
8540 ret = -TARGET_EFAULT;
8541
8542 execve_end:
8543 for (gp = guest_argp, q = argp; *q; gp += sizeof(abi_ulong), q++) {
8544 if (get_user_ual(addr, gp) || !addr) {
8545 break;
8546 }
8547 unlock_user(*q, addr, 0);
8548 }
8549 for (gp = guest_envp, q = envp; *q; gp += sizeof(abi_ulong), q++) {
8550 if (get_user_ual(addr, gp) || !addr) {
8551 break;
8552 }
8553 unlock_user(*q, addr, 0);
8554 }
8555
8556 g_free(argp);
8557 g_free(envp);
8558 return ret;
8559 }
8560
8561 #define TIMER_MAGIC 0x0caf0000
8562 #define TIMER_MAGIC_MASK 0xffff0000
8563
8564 /* Convert QEMU provided timer ID back to internal 16bit index format */
8565 static target_timer_t get_timer_id(abi_long arg)
8566 {
8567 target_timer_t timerid = arg;
8568
8569 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
8570 return -TARGET_EINVAL;
8571 }
8572
8573 timerid &= 0xffff;
8574
8575 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
8576 return -TARGET_EINVAL;
8577 }
8578
8579 return timerid;
8580 }
8581
8582 static int target_to_host_cpu_mask(unsigned long *host_mask,
8583 size_t host_size,
8584 abi_ulong target_addr,
8585 size_t target_size)
8586 {
8587 unsigned target_bits = sizeof(abi_ulong) * 8;
8588 unsigned host_bits = sizeof(*host_mask) * 8;
8589 abi_ulong *target_mask;
8590 unsigned i, j;
8591
8592 assert(host_size >= target_size);
8593
8594 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
8595 if (!target_mask) {
8596 return -TARGET_EFAULT;
8597 }
8598 memset(host_mask, 0, host_size);
8599
8600 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8601 unsigned bit = i * target_bits;
8602 abi_ulong val;
8603
8604 __get_user(val, &target_mask[i]);
8605 for (j = 0; j < target_bits; j++, bit++) {
8606 if (val & (1UL << j)) {
8607 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
8608 }
8609 }
8610 }
8611
8612 unlock_user(target_mask, target_addr, 0);
8613 return 0;
8614 }
8615
8616 static int host_to_target_cpu_mask(const unsigned long *host_mask,
8617 size_t host_size,
8618 abi_ulong target_addr,
8619 size_t target_size)
8620 {
8621 unsigned target_bits = sizeof(abi_ulong) * 8;
8622 unsigned host_bits = sizeof(*host_mask) * 8;
8623 abi_ulong *target_mask;
8624 unsigned i, j;
8625
8626 assert(host_size >= target_size);
8627
8628 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
8629 if (!target_mask) {
8630 return -TARGET_EFAULT;
8631 }
8632
8633 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8634 unsigned bit = i * target_bits;
8635 abi_ulong val = 0;
8636
8637 for (j = 0; j < target_bits; j++, bit++) {
8638 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
8639 val |= 1UL << j;
8640 }
8641 }
8642 __put_user(val, &target_mask[i]);
8643 }
8644
8645 unlock_user(target_mask, target_addr, target_size);
8646 return 0;
8647 }
8648
8649 #ifdef TARGET_NR_getdents
8650 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count)
8651 {
8652 g_autofree void *hdirp = NULL;
8653 void *tdirp;
8654 int hlen, hoff, toff;
8655 int hreclen, treclen;
8656 off64_t prev_diroff = 0;
8657
8658 hdirp = g_try_malloc(count);
8659 if (!hdirp) {
8660 return -TARGET_ENOMEM;
8661 }
8662
8663 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8664 hlen = sys_getdents(dirfd, hdirp, count);
8665 #else
8666 hlen = sys_getdents64(dirfd, hdirp, count);
8667 #endif
8668
8669 hlen = get_errno(hlen);
8670 if (is_error(hlen)) {
8671 return hlen;
8672 }
8673
8674 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8675 if (!tdirp) {
8676 return -TARGET_EFAULT;
8677 }
8678
8679 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8680 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8681 struct linux_dirent *hde = hdirp + hoff;
8682 #else
8683 struct linux_dirent64 *hde = hdirp + hoff;
8684 #endif
8685 struct target_dirent *tde = tdirp + toff;
8686 int namelen;
8687 uint8_t type;
8688
8689 namelen = strlen(hde->d_name);
8690 hreclen = hde->d_reclen;
8691 treclen = offsetof(struct target_dirent, d_name) + namelen + 2;
8692 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent));
8693
8694 if (toff + treclen > count) {
8695 /*
8696 * If the host struct is smaller than the target struct, or
8697 * requires less alignment and thus packs into less space,
8698 * then the host can return more entries than we can pass
8699 * on to the guest.
8700 */
8701 if (toff == 0) {
8702 toff = -TARGET_EINVAL; /* result buffer is too small */
8703 break;
8704 }
8705 /*
8706 * Return what we have, resetting the file pointer to the
8707 * location of the first record not returned.
8708 */
8709 lseek64(dirfd, prev_diroff, SEEK_SET);
8710 break;
8711 }
8712
8713 prev_diroff = hde->d_off;
8714 tde->d_ino = tswapal(hde->d_ino);
8715 tde->d_off = tswapal(hde->d_off);
8716 tde->d_reclen = tswap16(treclen);
8717 memcpy(tde->d_name, hde->d_name, namelen + 1);
8718
8719 /*
8720 * The getdents type is in what was formerly a padding byte at the
8721 * end of the structure.
8722 */
8723 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8724 type = *((uint8_t *)hde + hreclen - 1);
8725 #else
8726 type = hde->d_type;
8727 #endif
8728 *((uint8_t *)tde + treclen - 1) = type;
8729 }
8730
8731 unlock_user(tdirp, arg2, toff);
8732 return toff;
8733 }
8734 #endif /* TARGET_NR_getdents */
8735
8736 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
8737 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count)
8738 {
8739 g_autofree void *hdirp = NULL;
8740 void *tdirp;
8741 int hlen, hoff, toff;
8742 int hreclen, treclen;
8743 off64_t prev_diroff = 0;
8744
8745 hdirp = g_try_malloc(count);
8746 if (!hdirp) {
8747 return -TARGET_ENOMEM;
8748 }
8749
8750 hlen = get_errno(sys_getdents64(dirfd, hdirp, count));
8751 if (is_error(hlen)) {
8752 return hlen;
8753 }
8754
8755 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8756 if (!tdirp) {
8757 return -TARGET_EFAULT;
8758 }
8759
8760 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8761 struct linux_dirent64 *hde = hdirp + hoff;
8762 struct target_dirent64 *tde = tdirp + toff;
8763 int namelen;
8764
8765 namelen = strlen(hde->d_name) + 1;
8766 hreclen = hde->d_reclen;
8767 treclen = offsetof(struct target_dirent64, d_name) + namelen;
8768 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64));
8769
8770 if (toff + treclen > count) {
8771 /*
8772 * If the host struct is smaller than the target struct, or
8773 * requires less alignment and thus packs into less space,
8774 * then the host can return more entries than we can pass
8775 * on to the guest.
8776 */
8777 if (toff == 0) {
8778 toff = -TARGET_EINVAL; /* result buffer is too small */
8779 break;
8780 }
8781 /*
8782 * Return what we have, resetting the file pointer to the
8783 * location of the first record not returned.
8784 */
8785 lseek64(dirfd, prev_diroff, SEEK_SET);
8786 break;
8787 }
8788
8789 prev_diroff = hde->d_off;
8790 tde->d_ino = tswap64(hde->d_ino);
8791 tde->d_off = tswap64(hde->d_off);
8792 tde->d_reclen = tswap16(treclen);
8793 tde->d_type = hde->d_type;
8794 memcpy(tde->d_name, hde->d_name, namelen);
8795 }
8796
8797 unlock_user(tdirp, arg2, toff);
8798 return toff;
8799 }
8800 #endif /* TARGET_NR_getdents64 */
8801
8802 #if defined(TARGET_NR_riscv_hwprobe)
8803
8804 #define RISCV_HWPROBE_KEY_MVENDORID 0
8805 #define RISCV_HWPROBE_KEY_MARCHID 1
8806 #define RISCV_HWPROBE_KEY_MIMPID 2
8807
8808 #define RISCV_HWPROBE_KEY_BASE_BEHAVIOR 3
8809 #define RISCV_HWPROBE_BASE_BEHAVIOR_IMA (1 << 0)
8810
8811 #define RISCV_HWPROBE_KEY_IMA_EXT_0 4
8812 #define RISCV_HWPROBE_IMA_FD (1 << 0)
8813 #define RISCV_HWPROBE_IMA_C (1 << 1)
8814 #define RISCV_HWPROBE_IMA_V (1 << 2)
8815 #define RISCV_HWPROBE_EXT_ZBA (1 << 3)
8816 #define RISCV_HWPROBE_EXT_ZBB (1 << 4)
8817 #define RISCV_HWPROBE_EXT_ZBS (1 << 5)
8818 #define RISCV_HWPROBE_EXT_ZICBOZ (1 << 6)
8819 #define RISCV_HWPROBE_EXT_ZBC (1 << 7)
8820 #define RISCV_HWPROBE_EXT_ZBKB (1 << 8)
8821 #define RISCV_HWPROBE_EXT_ZBKC (1 << 9)
8822 #define RISCV_HWPROBE_EXT_ZBKX (1 << 10)
8823 #define RISCV_HWPROBE_EXT_ZKND (1 << 11)
8824 #define RISCV_HWPROBE_EXT_ZKNE (1 << 12)
8825 #define RISCV_HWPROBE_EXT_ZKNH (1 << 13)
8826 #define RISCV_HWPROBE_EXT_ZKSED (1 << 14)
8827 #define RISCV_HWPROBE_EXT_ZKSH (1 << 15)
8828 #define RISCV_HWPROBE_EXT_ZKT (1 << 16)
8829 #define RISCV_HWPROBE_EXT_ZVBB (1 << 17)
8830 #define RISCV_HWPROBE_EXT_ZVBC (1 << 18)
8831 #define RISCV_HWPROBE_EXT_ZVKB (1 << 19)
8832 #define RISCV_HWPROBE_EXT_ZVKG (1 << 20)
8833 #define RISCV_HWPROBE_EXT_ZVKNED (1 << 21)
8834 #define RISCV_HWPROBE_EXT_ZVKNHA (1 << 22)
8835 #define RISCV_HWPROBE_EXT_ZVKNHB (1 << 23)
8836 #define RISCV_HWPROBE_EXT_ZVKSED (1 << 24)
8837 #define RISCV_HWPROBE_EXT_ZVKSH (1 << 25)
8838 #define RISCV_HWPROBE_EXT_ZVKT (1 << 26)
8839 #define RISCV_HWPROBE_EXT_ZFH (1 << 27)
8840 #define RISCV_HWPROBE_EXT_ZFHMIN (1 << 28)
8841 #define RISCV_HWPROBE_EXT_ZIHINTNTL (1 << 29)
8842 #define RISCV_HWPROBE_EXT_ZVFH (1 << 30)
8843 #define RISCV_HWPROBE_EXT_ZVFHMIN (1 << 31)
8844 #define RISCV_HWPROBE_EXT_ZFA (1ULL << 32)
8845 #define RISCV_HWPROBE_EXT_ZTSO (1ULL << 33)
8846 #define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34)
8847 #define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35)
8848
8849 #define RISCV_HWPROBE_KEY_CPUPERF_0 5
8850 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
8851 #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
8852 #define RISCV_HWPROBE_MISALIGNED_SLOW (2 << 0)
8853 #define RISCV_HWPROBE_MISALIGNED_FAST (3 << 0)
8854 #define RISCV_HWPROBE_MISALIGNED_UNSUPPORTED (4 << 0)
8855 #define RISCV_HWPROBE_MISALIGNED_MASK (7 << 0)
8856
8857 #define RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE 6
8858
8859 struct riscv_hwprobe {
8860 abi_llong key;
8861 abi_ullong value;
8862 };
8863
8864 static void risc_hwprobe_fill_pairs(CPURISCVState *env,
8865 struct riscv_hwprobe *pair,
8866 size_t pair_count)
8867 {
8868 const RISCVCPUConfig *cfg = riscv_cpu_cfg(env);
8869
8870 for (; pair_count > 0; pair_count--, pair++) {
8871 abi_llong key;
8872 abi_ullong value;
8873 __put_user(0, &pair->value);
8874 __get_user(key, &pair->key);
8875 switch (key) {
8876 case RISCV_HWPROBE_KEY_MVENDORID:
8877 __put_user(cfg->mvendorid, &pair->value);
8878 break;
8879 case RISCV_HWPROBE_KEY_MARCHID:
8880 __put_user(cfg->marchid, &pair->value);
8881 break;
8882 case RISCV_HWPROBE_KEY_MIMPID:
8883 __put_user(cfg->mimpid, &pair->value);
8884 break;
8885 case RISCV_HWPROBE_KEY_BASE_BEHAVIOR:
8886 value = riscv_has_ext(env, RVI) &&
8887 riscv_has_ext(env, RVM) &&
8888 riscv_has_ext(env, RVA) ?
8889 RISCV_HWPROBE_BASE_BEHAVIOR_IMA : 0;
8890 __put_user(value, &pair->value);
8891 break;
8892 case RISCV_HWPROBE_KEY_IMA_EXT_0:
8893 value = riscv_has_ext(env, RVF) &&
8894 riscv_has_ext(env, RVD) ?
8895 RISCV_HWPROBE_IMA_FD : 0;
8896 value |= riscv_has_ext(env, RVC) ?
8897 RISCV_HWPROBE_IMA_C : 0;
8898 value |= riscv_has_ext(env, RVV) ?
8899 RISCV_HWPROBE_IMA_V : 0;
8900 value |= cfg->ext_zba ?
8901 RISCV_HWPROBE_EXT_ZBA : 0;
8902 value |= cfg->ext_zbb ?
8903 RISCV_HWPROBE_EXT_ZBB : 0;
8904 value |= cfg->ext_zbs ?
8905 RISCV_HWPROBE_EXT_ZBS : 0;
8906 value |= cfg->ext_zicboz ?
8907 RISCV_HWPROBE_EXT_ZICBOZ : 0;
8908 value |= cfg->ext_zbc ?
8909 RISCV_HWPROBE_EXT_ZBC : 0;
8910 value |= cfg->ext_zbkb ?
8911 RISCV_HWPROBE_EXT_ZBKB : 0;
8912 value |= cfg->ext_zbkc ?
8913 RISCV_HWPROBE_EXT_ZBKC : 0;
8914 value |= cfg->ext_zbkx ?
8915 RISCV_HWPROBE_EXT_ZBKX : 0;
8916 value |= cfg->ext_zknd ?
8917 RISCV_HWPROBE_EXT_ZKND : 0;
8918 value |= cfg->ext_zkne ?
8919 RISCV_HWPROBE_EXT_ZKNE : 0;
8920 value |= cfg->ext_zknh ?
8921 RISCV_HWPROBE_EXT_ZKNH : 0;
8922 value |= cfg->ext_zksed ?
8923 RISCV_HWPROBE_EXT_ZKSED : 0;
8924 value |= cfg->ext_zksh ?
8925 RISCV_HWPROBE_EXT_ZKSH : 0;
8926 value |= cfg->ext_zkt ?
8927 RISCV_HWPROBE_EXT_ZKT : 0;
8928 value |= cfg->ext_zvbb ?
8929 RISCV_HWPROBE_EXT_ZVBB : 0;
8930 value |= cfg->ext_zvbc ?
8931 RISCV_HWPROBE_EXT_ZVBC : 0;
8932 value |= cfg->ext_zvkb ?
8933 RISCV_HWPROBE_EXT_ZVKB : 0;
8934 value |= cfg->ext_zvkg ?
8935 RISCV_HWPROBE_EXT_ZVKG : 0;
8936 value |= cfg->ext_zvkned ?
8937 RISCV_HWPROBE_EXT_ZVKNED : 0;
8938 value |= cfg->ext_zvknha ?
8939 RISCV_HWPROBE_EXT_ZVKNHA : 0;
8940 value |= cfg->ext_zvknhb ?
8941 RISCV_HWPROBE_EXT_ZVKNHB : 0;
8942 value |= cfg->ext_zvksed ?
8943 RISCV_HWPROBE_EXT_ZVKSED : 0;
8944 value |= cfg->ext_zvksh ?
8945 RISCV_HWPROBE_EXT_ZVKSH : 0;
8946 value |= cfg->ext_zvkt ?
8947 RISCV_HWPROBE_EXT_ZVKT : 0;
8948 value |= cfg->ext_zfh ?
8949 RISCV_HWPROBE_EXT_ZFH : 0;
8950 value |= cfg->ext_zfhmin ?
8951 RISCV_HWPROBE_EXT_ZFHMIN : 0;
8952 value |= cfg->ext_zihintntl ?
8953 RISCV_HWPROBE_EXT_ZIHINTNTL : 0;
8954 value |= cfg->ext_zvfh ?
8955 RISCV_HWPROBE_EXT_ZVFH : 0;
8956 value |= cfg->ext_zvfhmin ?
8957 RISCV_HWPROBE_EXT_ZVFHMIN : 0;
8958 value |= cfg->ext_zfa ?
8959 RISCV_HWPROBE_EXT_ZFA : 0;
8960 value |= cfg->ext_ztso ?
8961 RISCV_HWPROBE_EXT_ZTSO : 0;
8962 value |= cfg->ext_zacas ?
8963 RISCV_HWPROBE_EXT_ZACAS : 0;
8964 value |= cfg->ext_zicond ?
8965 RISCV_HWPROBE_EXT_ZICOND : 0;
8966 __put_user(value, &pair->value);
8967 break;
8968 case RISCV_HWPROBE_KEY_CPUPERF_0:
8969 __put_user(RISCV_HWPROBE_MISALIGNED_FAST, &pair->value);
8970 break;
8971 case RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE:
8972 value = cfg->ext_zicboz ? cfg->cboz_blocksize : 0;
8973 __put_user(value, &pair->value);
8974 break;
8975 default:
8976 __put_user(-1, &pair->key);
8977 break;
8978 }
8979 }
8980 }
8981
8982 static int cpu_set_valid(abi_long arg3, abi_long arg4)
8983 {
8984 int ret, i, tmp;
8985 size_t host_mask_size, target_mask_size;
8986 unsigned long *host_mask;
8987
8988 /*
8989 * cpu_set_t represent CPU masks as bit masks of type unsigned long *.
8990 * arg3 contains the cpu count.
8991 */
8992 tmp = (8 * sizeof(abi_ulong));
8993 target_mask_size = ((arg3 + tmp - 1) / tmp) * sizeof(abi_ulong);
8994 host_mask_size = (target_mask_size + (sizeof(*host_mask) - 1)) &
8995 ~(sizeof(*host_mask) - 1);
8996
8997 host_mask = alloca(host_mask_size);
8998
8999 ret = target_to_host_cpu_mask(host_mask, host_mask_size,
9000 arg4, target_mask_size);
9001 if (ret != 0) {
9002 return ret;
9003 }
9004
9005 for (i = 0 ; i < host_mask_size / sizeof(*host_mask); i++) {
9006 if (host_mask[i] != 0) {
9007 return 0;
9008 }
9009 }
9010 return -TARGET_EINVAL;
9011 }
9012
9013 static abi_long do_riscv_hwprobe(CPUArchState *cpu_env, abi_long arg1,
9014 abi_long arg2, abi_long arg3,
9015 abi_long arg4, abi_long arg5)
9016 {
9017 int ret;
9018 struct riscv_hwprobe *host_pairs;
9019
9020 /* flags must be 0 */
9021 if (arg5 != 0) {
9022 return -TARGET_EINVAL;
9023 }
9024
9025 /* check cpu_set */
9026 if (arg3 != 0) {
9027 ret = cpu_set_valid(arg3, arg4);
9028 if (ret != 0) {
9029 return ret;
9030 }
9031 } else if (arg4 != 0) {
9032 return -TARGET_EINVAL;
9033 }
9034
9035 /* no pairs */
9036 if (arg2 == 0) {
9037 return 0;
9038 }
9039
9040 host_pairs = lock_user(VERIFY_WRITE, arg1,
9041 sizeof(*host_pairs) * (size_t)arg2, 0);
9042 if (host_pairs == NULL) {
9043 return -TARGET_EFAULT;
9044 }
9045 risc_hwprobe_fill_pairs(cpu_env, host_pairs, arg2);
9046 unlock_user(host_pairs, arg1, sizeof(*host_pairs) * (size_t)arg2);
9047 return 0;
9048 }
9049 #endif /* TARGET_NR_riscv_hwprobe */
9050
9051 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root)
9052 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
9053 #endif
9054
9055 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
9056 #define __NR_sys_open_tree __NR_open_tree
9057 _syscall3(int, sys_open_tree, int, __dfd, const char *, __filename,
9058 unsigned int, __flags)
9059 #endif
9060
9061 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
9062 #define __NR_sys_move_mount __NR_move_mount
9063 _syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname,
9064 int, __to_dfd, const char *, __to_pathname, unsigned int, flag)
9065 #endif
9066
9067 /* This is an internal helper for do_syscall so that it is easier
9068 * to have a single return point, so that actions, such as logging
9069 * of syscall results, can be performed.
9070 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
9071 */
9072 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
9073 abi_long arg2, abi_long arg3, abi_long arg4,
9074 abi_long arg5, abi_long arg6, abi_long arg7,
9075 abi_long arg8)
9076 {
9077 CPUState *cpu = env_cpu(cpu_env);
9078 abi_long ret;
9079 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
9080 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
9081 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
9082 || defined(TARGET_NR_statx)
9083 struct stat st;
9084 #endif
9085 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
9086 || defined(TARGET_NR_fstatfs)
9087 struct statfs stfs;
9088 #endif
9089 void *p;
9090
9091 switch(num) {
9092 case TARGET_NR_exit:
9093 /* In old applications this may be used to implement _exit(2).
9094 However in threaded applications it is used for thread termination,
9095 and _exit_group is used for application termination.
9096 Do thread termination if we have more then one thread. */
9097
9098 if (block_signals()) {
9099 return -QEMU_ERESTARTSYS;
9100 }
9101
9102 pthread_mutex_lock(&clone_lock);
9103
9104 if (CPU_NEXT(first_cpu)) {
9105 TaskState *ts = get_task_state(cpu);
9106
9107 if (ts->child_tidptr) {
9108 put_user_u32(0, ts->child_tidptr);
9109 do_sys_futex(g2h(cpu, ts->child_tidptr),
9110 FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
9111 }
9112
9113 object_unparent(OBJECT(cpu));
9114 object_unref(OBJECT(cpu));
9115 /*
9116 * At this point the CPU should be unrealized and removed
9117 * from cpu lists. We can clean-up the rest of the thread
9118 * data without the lock held.
9119 */
9120
9121 pthread_mutex_unlock(&clone_lock);
9122
9123 thread_cpu = NULL;
9124 g_free(ts);
9125 rcu_unregister_thread();
9126 pthread_exit(NULL);
9127 }
9128
9129 pthread_mutex_unlock(&clone_lock);
9130 preexit_cleanup(cpu_env, arg1);
9131 _exit(arg1);
9132 return 0; /* avoid warning */
9133 case TARGET_NR_read:
9134 if (arg2 == 0 && arg3 == 0) {
9135 return get_errno(safe_read(arg1, 0, 0));
9136 } else {
9137 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
9138 return -TARGET_EFAULT;
9139 ret = get_errno(safe_read(arg1, p, arg3));
9140 if (ret >= 0 &&
9141 fd_trans_host_to_target_data(arg1)) {
9142 ret = fd_trans_host_to_target_data(arg1)(p, ret);
9143 }
9144 unlock_user(p, arg2, ret);
9145 }
9146 return ret;
9147 case TARGET_NR_write:
9148 if (arg2 == 0 && arg3 == 0) {
9149 return get_errno(safe_write(arg1, 0, 0));
9150 }
9151 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
9152 return -TARGET_EFAULT;
9153 if (fd_trans_target_to_host_data(arg1)) {
9154 void *copy = g_malloc(arg3);
9155 memcpy(copy, p, arg3);
9156 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
9157 if (ret >= 0) {
9158 ret = get_errno(safe_write(arg1, copy, ret));
9159 }
9160 g_free(copy);
9161 } else {
9162 ret = get_errno(safe_write(arg1, p, arg3));
9163 }
9164 unlock_user(p, arg2, 0);
9165 return ret;
9166
9167 #ifdef TARGET_NR_open
9168 case TARGET_NR_open:
9169 if (!(p = lock_user_string(arg1)))
9170 return -TARGET_EFAULT;
9171 ret = get_errno(do_guest_openat(cpu_env, AT_FDCWD, p,
9172 target_to_host_bitmask(arg2, fcntl_flags_tbl),
9173 arg3, true));
9174 fd_trans_unregister(ret);
9175 unlock_user(p, arg1, 0);
9176 return ret;
9177 #endif
9178 case TARGET_NR_openat:
9179 if (!(p = lock_user_string(arg2)))
9180 return -TARGET_EFAULT;
9181 ret = get_errno(do_guest_openat(cpu_env, arg1, p,
9182 target_to_host_bitmask(arg3, fcntl_flags_tbl),
9183 arg4, true));
9184 fd_trans_unregister(ret);
9185 unlock_user(p, arg2, 0);
9186 return ret;
9187 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
9188 case TARGET_NR_name_to_handle_at:
9189 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
9190 return ret;
9191 #endif
9192 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
9193 case TARGET_NR_open_by_handle_at:
9194 ret = do_open_by_handle_at(arg1, arg2, arg3);
9195 fd_trans_unregister(ret);
9196 return ret;
9197 #endif
9198 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
9199 case TARGET_NR_pidfd_open:
9200 return get_errno(pidfd_open(arg1, arg2));
9201 #endif
9202 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
9203 case TARGET_NR_pidfd_send_signal:
9204 {
9205 siginfo_t uinfo, *puinfo;
9206
9207 if (arg3) {
9208 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
9209 if (!p) {
9210 return -TARGET_EFAULT;
9211 }
9212 target_to_host_siginfo(&uinfo, p);
9213 unlock_user(p, arg3, 0);
9214 puinfo = &uinfo;
9215 } else {
9216 puinfo = NULL;
9217 }
9218 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
9219 puinfo, arg4));
9220 }
9221 return ret;
9222 #endif
9223 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
9224 case TARGET_NR_pidfd_getfd:
9225 return get_errno(pidfd_getfd(arg1, arg2, arg3));
9226 #endif
9227 case TARGET_NR_close:
9228 fd_trans_unregister(arg1);
9229 return get_errno(close(arg1));
9230 #if defined(__NR_close_range) && defined(TARGET_NR_close_range)
9231 case TARGET_NR_close_range:
9232 ret = get_errno(sys_close_range(arg1, arg2, arg3));
9233 if (ret == 0 && !(arg3 & CLOSE_RANGE_CLOEXEC)) {
9234 abi_long fd, maxfd;
9235 maxfd = MIN(arg2, target_fd_max);
9236 for (fd = arg1; fd < maxfd; fd++) {
9237 fd_trans_unregister(fd);
9238 }
9239 }
9240 return ret;
9241 #endif
9242
9243 case TARGET_NR_brk:
9244 return do_brk(arg1);
9245 #ifdef TARGET_NR_fork
9246 case TARGET_NR_fork:
9247 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
9248 #endif
9249 #ifdef TARGET_NR_waitpid
9250 case TARGET_NR_waitpid:
9251 {
9252 int status;
9253 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
9254 if (!is_error(ret) && arg2 && ret
9255 && put_user_s32(host_to_target_waitstatus(status), arg2))
9256 return -TARGET_EFAULT;
9257 }
9258 return ret;
9259 #endif
9260 #ifdef TARGET_NR_waitid
9261 case TARGET_NR_waitid:
9262 {
9263 siginfo_t info;
9264 info.si_pid = 0;
9265 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
9266 if (!is_error(ret) && arg3 && info.si_pid != 0) {
9267 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
9268 return -TARGET_EFAULT;
9269 host_to_target_siginfo(p, &info);
9270 unlock_user(p, arg3, sizeof(target_siginfo_t));
9271 }
9272 }
9273 return ret;
9274 #endif
9275 #ifdef TARGET_NR_creat /* not on alpha */
9276 case TARGET_NR_creat:
9277 if (!(p = lock_user_string(arg1)))
9278 return -TARGET_EFAULT;
9279 ret = get_errno(creat(p, arg2));
9280 fd_trans_unregister(ret);
9281 unlock_user(p, arg1, 0);
9282 return ret;
9283 #endif
9284 #ifdef TARGET_NR_link
9285 case TARGET_NR_link:
9286 {
9287 void * p2;
9288 p = lock_user_string(arg1);
9289 p2 = lock_user_string(arg2);
9290 if (!p || !p2)
9291 ret = -TARGET_EFAULT;
9292 else
9293 ret = get_errno(link(p, p2));
9294 unlock_user(p2, arg2, 0);
9295 unlock_user(p, arg1, 0);
9296 }
9297 return ret;
9298 #endif
9299 #if defined(TARGET_NR_linkat)
9300 case TARGET_NR_linkat:
9301 {
9302 void * p2 = NULL;
9303 if (!arg2 || !arg4)
9304 return -TARGET_EFAULT;
9305 p = lock_user_string(arg2);
9306 p2 = lock_user_string(arg4);
9307 if (!p || !p2)
9308 ret = -TARGET_EFAULT;
9309 else
9310 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
9311 unlock_user(p, arg2, 0);
9312 unlock_user(p2, arg4, 0);
9313 }
9314 return ret;
9315 #endif
9316 #ifdef TARGET_NR_unlink
9317 case TARGET_NR_unlink:
9318 if (!(p = lock_user_string(arg1)))
9319 return -TARGET_EFAULT;
9320 ret = get_errno(unlink(p));
9321 unlock_user(p, arg1, 0);
9322 return ret;
9323 #endif
9324 #if defined(TARGET_NR_unlinkat)
9325 case TARGET_NR_unlinkat:
9326 if (!(p = lock_user_string(arg2)))
9327 return -TARGET_EFAULT;
9328 ret = get_errno(unlinkat(arg1, p, arg3));
9329 unlock_user(p, arg2, 0);
9330 return ret;
9331 #endif
9332 case TARGET_NR_execveat:
9333 return do_execv(cpu_env, arg1, arg2, arg3, arg4, arg5, true);
9334 case TARGET_NR_execve:
9335 return do_execv(cpu_env, AT_FDCWD, arg1, arg2, arg3, 0, false);
9336 case TARGET_NR_chdir:
9337 if (!(p = lock_user_string(arg1)))
9338 return -TARGET_EFAULT;
9339 ret = get_errno(chdir(p));
9340 unlock_user(p, arg1, 0);
9341 return ret;
9342 #ifdef TARGET_NR_time
9343 case TARGET_NR_time:
9344 {
9345 time_t host_time;
9346 ret = get_errno(time(&host_time));
9347 if (!is_error(ret)
9348 && arg1
9349 && put_user_sal(host_time, arg1))
9350 return -TARGET_EFAULT;
9351 }
9352 return ret;
9353 #endif
9354 #ifdef TARGET_NR_mknod
9355 case TARGET_NR_mknod:
9356 if (!(p = lock_user_string(arg1)))
9357 return -TARGET_EFAULT;
9358 ret = get_errno(mknod(p, arg2, arg3));
9359 unlock_user(p, arg1, 0);
9360 return ret;
9361 #endif
9362 #if defined(TARGET_NR_mknodat)
9363 case TARGET_NR_mknodat:
9364 if (!(p = lock_user_string(arg2)))
9365 return -TARGET_EFAULT;
9366 ret = get_errno(mknodat(arg1, p, arg3, arg4));
9367 unlock_user(p, arg2, 0);
9368 return ret;
9369 #endif
9370 #ifdef TARGET_NR_chmod
9371 case TARGET_NR_chmod:
9372 if (!(p = lock_user_string(arg1)))
9373 return -TARGET_EFAULT;
9374 ret = get_errno(chmod(p, arg2));
9375 unlock_user(p, arg1, 0);
9376 return ret;
9377 #endif
9378 #ifdef TARGET_NR_lseek
9379 case TARGET_NR_lseek:
9380 return get_errno(lseek(arg1, arg2, arg3));
9381 #endif
9382 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
9383 /* Alpha specific */
9384 case TARGET_NR_getxpid:
9385 cpu_env->ir[IR_A4] = getppid();
9386 return get_errno(getpid());
9387 #endif
9388 #ifdef TARGET_NR_getpid
9389 case TARGET_NR_getpid:
9390 return get_errno(getpid());
9391 #endif
9392 case TARGET_NR_mount:
9393 {
9394 /* need to look at the data field */
9395 void *p2, *p3;
9396
9397 if (arg1) {
9398 p = lock_user_string(arg1);
9399 if (!p) {
9400 return -TARGET_EFAULT;
9401 }
9402 } else {
9403 p = NULL;
9404 }
9405
9406 p2 = lock_user_string(arg2);
9407 if (!p2) {
9408 if (arg1) {
9409 unlock_user(p, arg1, 0);
9410 }
9411 return -TARGET_EFAULT;
9412 }
9413
9414 if (arg3) {
9415 p3 = lock_user_string(arg3);
9416 if (!p3) {
9417 if (arg1) {
9418 unlock_user(p, arg1, 0);
9419 }
9420 unlock_user(p2, arg2, 0);
9421 return -TARGET_EFAULT;
9422 }
9423 } else {
9424 p3 = NULL;
9425 }
9426
9427 /* FIXME - arg5 should be locked, but it isn't clear how to
9428 * do that since it's not guaranteed to be a NULL-terminated
9429 * string.
9430 */
9431 if (!arg5) {
9432 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
9433 } else {
9434 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5));
9435 }
9436 ret = get_errno(ret);
9437
9438 if (arg1) {
9439 unlock_user(p, arg1, 0);
9440 }
9441 unlock_user(p2, arg2, 0);
9442 if (arg3) {
9443 unlock_user(p3, arg3, 0);
9444 }
9445 }
9446 return ret;
9447 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount)
9448 #if defined(TARGET_NR_umount)
9449 case TARGET_NR_umount:
9450 #endif
9451 #if defined(TARGET_NR_oldumount)
9452 case TARGET_NR_oldumount:
9453 #endif
9454 if (!(p = lock_user_string(arg1)))
9455 return -TARGET_EFAULT;
9456 ret = get_errno(umount(p));
9457 unlock_user(p, arg1, 0);
9458 return ret;
9459 #endif
9460 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
9461 case TARGET_NR_move_mount:
9462 {
9463 void *p2, *p4;
9464
9465 if (!arg2 || !arg4) {
9466 return -TARGET_EFAULT;
9467 }
9468
9469 p2 = lock_user_string(arg2);
9470 if (!p2) {
9471 return -TARGET_EFAULT;
9472 }
9473
9474 p4 = lock_user_string(arg4);
9475 if (!p4) {
9476 unlock_user(p2, arg2, 0);
9477 return -TARGET_EFAULT;
9478 }
9479 ret = get_errno(sys_move_mount(arg1, p2, arg3, p4, arg5));
9480
9481 unlock_user(p2, arg2, 0);
9482 unlock_user(p4, arg4, 0);
9483
9484 return ret;
9485 }
9486 #endif
9487 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
9488 case TARGET_NR_open_tree:
9489 {
9490 void *p2;
9491 int host_flags;
9492
9493 if (!arg2) {
9494 return -TARGET_EFAULT;
9495 }
9496
9497 p2 = lock_user_string(arg2);
9498 if (!p2) {
9499 return -TARGET_EFAULT;
9500 }
9501
9502 host_flags = arg3 & ~TARGET_O_CLOEXEC;
9503 if (arg3 & TARGET_O_CLOEXEC) {
9504 host_flags |= O_CLOEXEC;
9505 }
9506
9507 ret = get_errno(sys_open_tree(arg1, p2, host_flags));
9508
9509 unlock_user(p2, arg2, 0);
9510
9511 return ret;
9512 }
9513 #endif
9514 #ifdef TARGET_NR_stime /* not on alpha */
9515 case TARGET_NR_stime:
9516 {
9517 struct timespec ts;
9518 ts.tv_nsec = 0;
9519 if (get_user_sal(ts.tv_sec, arg1)) {
9520 return -TARGET_EFAULT;
9521 }
9522 return get_errno(clock_settime(CLOCK_REALTIME, &ts));
9523 }
9524 #endif
9525 #ifdef TARGET_NR_alarm /* not on alpha */
9526 case TARGET_NR_alarm:
9527 return alarm(arg1);
9528 #endif
9529 #ifdef TARGET_NR_pause /* not on alpha */
9530 case TARGET_NR_pause:
9531 if (!block_signals()) {
9532 sigsuspend(&get_task_state(cpu)->signal_mask);
9533 }
9534 return -TARGET_EINTR;
9535 #endif
9536 #ifdef TARGET_NR_utime
9537 case TARGET_NR_utime:
9538 {
9539 struct utimbuf tbuf, *host_tbuf;
9540 struct target_utimbuf *target_tbuf;
9541 if (arg2) {
9542 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
9543 return -TARGET_EFAULT;
9544 tbuf.actime = tswapal(target_tbuf->actime);
9545 tbuf.modtime = tswapal(target_tbuf->modtime);
9546 unlock_user_struct(target_tbuf, arg2, 0);
9547 host_tbuf = &tbuf;
9548 } else {
9549 host_tbuf = NULL;
9550 }
9551 if (!(p = lock_user_string(arg1)))
9552 return -TARGET_EFAULT;
9553 ret = get_errno(utime(p, host_tbuf));
9554 unlock_user(p, arg1, 0);
9555 }
9556 return ret;
9557 #endif
9558 #ifdef TARGET_NR_utimes
9559 case TARGET_NR_utimes:
9560 {
9561 struct timeval *tvp, tv[2];
9562 if (arg2) {
9563 if (copy_from_user_timeval(&tv[0], arg2)
9564 || copy_from_user_timeval(&tv[1],
9565 arg2 + sizeof(struct target_timeval)))
9566 return -TARGET_EFAULT;
9567 tvp = tv;
9568 } else {
9569 tvp = NULL;
9570 }
9571 if (!(p = lock_user_string(arg1)))
9572 return -TARGET_EFAULT;
9573 ret = get_errno(utimes(p, tvp));
9574 unlock_user(p, arg1, 0);
9575 }
9576 return ret;
9577 #endif
9578 #if defined(TARGET_NR_futimesat)
9579 case TARGET_NR_futimesat:
9580 {
9581 struct timeval *tvp, tv[2];
9582 if (arg3) {
9583 if (copy_from_user_timeval(&tv[0], arg3)
9584 || copy_from_user_timeval(&tv[1],
9585 arg3 + sizeof(struct target_timeval)))
9586 return -TARGET_EFAULT;
9587 tvp = tv;
9588 } else {
9589 tvp = NULL;
9590 }
9591 if (!(p = lock_user_string(arg2))) {
9592 return -TARGET_EFAULT;
9593 }
9594 ret = get_errno(futimesat(arg1, path(p), tvp));
9595 unlock_user(p, arg2, 0);
9596 }
9597 return ret;
9598 #endif
9599 #ifdef TARGET_NR_access
9600 case TARGET_NR_access:
9601 if (!(p = lock_user_string(arg1))) {
9602 return -TARGET_EFAULT;
9603 }
9604 ret = get_errno(access(path(p), arg2));
9605 unlock_user(p, arg1, 0);
9606 return ret;
9607 #endif
9608 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
9609 case TARGET_NR_faccessat:
9610 if (!(p = lock_user_string(arg2))) {
9611 return -TARGET_EFAULT;
9612 }
9613 ret = get_errno(faccessat(arg1, p, arg3, 0));
9614 unlock_user(p, arg2, 0);
9615 return ret;
9616 #endif
9617 #if defined(TARGET_NR_faccessat2)
9618 case TARGET_NR_faccessat2:
9619 if (!(p = lock_user_string(arg2))) {
9620 return -TARGET_EFAULT;
9621 }
9622 ret = get_errno(faccessat(arg1, p, arg3, arg4));
9623 unlock_user(p, arg2, 0);
9624 return ret;
9625 #endif
9626 #ifdef TARGET_NR_nice /* not on alpha */
9627 case TARGET_NR_nice:
9628 return get_errno(nice(arg1));
9629 #endif
9630 case TARGET_NR_sync:
9631 sync();
9632 return 0;
9633 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
9634 case TARGET_NR_syncfs:
9635 return get_errno(syncfs(arg1));
9636 #endif
9637 case TARGET_NR_kill:
9638 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
9639 #ifdef TARGET_NR_rename
9640 case TARGET_NR_rename:
9641 {
9642 void *p2;
9643 p = lock_user_string(arg1);
9644 p2 = lock_user_string(arg2);
9645 if (!p || !p2)
9646 ret = -TARGET_EFAULT;
9647 else
9648 ret = get_errno(rename(p, p2));
9649 unlock_user(p2, arg2, 0);
9650 unlock_user(p, arg1, 0);
9651 }
9652 return ret;
9653 #endif
9654 #if defined(TARGET_NR_renameat)
9655 case TARGET_NR_renameat:
9656 {
9657 void *p2;
9658 p = lock_user_string(arg2);
9659 p2 = lock_user_string(arg4);
9660 if (!p || !p2)
9661 ret = -TARGET_EFAULT;
9662 else
9663 ret = get_errno(renameat(arg1, p, arg3, p2));
9664 unlock_user(p2, arg4, 0);
9665 unlock_user(p, arg2, 0);
9666 }
9667 return ret;
9668 #endif
9669 #if defined(TARGET_NR_renameat2)
9670 case TARGET_NR_renameat2:
9671 {
9672 void *p2;
9673 p = lock_user_string(arg2);
9674 p2 = lock_user_string(arg4);
9675 if (!p || !p2) {
9676 ret = -TARGET_EFAULT;
9677 } else {
9678 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
9679 }
9680 unlock_user(p2, arg4, 0);
9681 unlock_user(p, arg2, 0);
9682 }
9683 return ret;
9684 #endif
9685 #ifdef TARGET_NR_mkdir
9686 case TARGET_NR_mkdir:
9687 if (!(p = lock_user_string(arg1)))
9688 return -TARGET_EFAULT;
9689 ret = get_errno(mkdir(p, arg2));
9690 unlock_user(p, arg1, 0);
9691 return ret;
9692 #endif
9693 #if defined(TARGET_NR_mkdirat)
9694 case TARGET_NR_mkdirat:
9695 if (!(p = lock_user_string(arg2)))
9696 return -TARGET_EFAULT;
9697 ret = get_errno(mkdirat(arg1, p, arg3));
9698 unlock_user(p, arg2, 0);
9699 return ret;
9700 #endif
9701 #ifdef TARGET_NR_rmdir
9702 case TARGET_NR_rmdir:
9703 if (!(p = lock_user_string(arg1)))
9704 return -TARGET_EFAULT;
9705 ret = get_errno(rmdir(p));
9706 unlock_user(p, arg1, 0);
9707 return ret;
9708 #endif
9709 case TARGET_NR_dup:
9710 ret = get_errno(dup(arg1));
9711 if (ret >= 0) {
9712 fd_trans_dup(arg1, ret);
9713 }
9714 return ret;
9715 #ifdef TARGET_NR_pipe
9716 case TARGET_NR_pipe:
9717 return do_pipe(cpu_env, arg1, 0, 0);
9718 #endif
9719 #ifdef TARGET_NR_pipe2
9720 case TARGET_NR_pipe2:
9721 return do_pipe(cpu_env, arg1,
9722 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
9723 #endif
9724 case TARGET_NR_times:
9725 {
9726 struct target_tms *tmsp;
9727 struct tms tms;
9728 ret = get_errno(times(&tms));
9729 if (arg1) {
9730 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
9731 if (!tmsp)
9732 return -TARGET_EFAULT;
9733 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
9734 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
9735 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
9736 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
9737 }
9738 if (!is_error(ret))
9739 ret = host_to_target_clock_t(ret);
9740 }
9741 return ret;
9742 case TARGET_NR_acct:
9743 if (arg1 == 0) {
9744 ret = get_errno(acct(NULL));
9745 } else {
9746 if (!(p = lock_user_string(arg1))) {
9747 return -TARGET_EFAULT;
9748 }
9749 ret = get_errno(acct(path(p)));
9750 unlock_user(p, arg1, 0);
9751 }
9752 return ret;
9753 #ifdef TARGET_NR_umount2
9754 case TARGET_NR_umount2:
9755 if (!(p = lock_user_string(arg1)))
9756 return -TARGET_EFAULT;
9757 ret = get_errno(umount2(p, arg2));
9758 unlock_user(p, arg1, 0);
9759 return ret;
9760 #endif
9761 case TARGET_NR_ioctl:
9762 return do_ioctl(arg1, arg2, arg3);
9763 #ifdef TARGET_NR_fcntl
9764 case TARGET_NR_fcntl:
9765 return do_fcntl(arg1, arg2, arg3);
9766 #endif
9767 case TARGET_NR_setpgid:
9768 return get_errno(setpgid(arg1, arg2));
9769 case TARGET_NR_umask:
9770 return get_errno(umask(arg1));
9771 case TARGET_NR_chroot:
9772 if (!(p = lock_user_string(arg1)))
9773 return -TARGET_EFAULT;
9774 ret = get_errno(chroot(p));
9775 unlock_user(p, arg1, 0);
9776 return ret;
9777 #ifdef TARGET_NR_dup2
9778 case TARGET_NR_dup2:
9779 ret = get_errno(dup2(arg1, arg2));
9780 if (ret >= 0) {
9781 fd_trans_dup(arg1, arg2);
9782 }
9783 return ret;
9784 #endif
9785 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
9786 case TARGET_NR_dup3:
9787 {
9788 int host_flags;
9789
9790 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
9791 return -EINVAL;
9792 }
9793 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
9794 ret = get_errno(dup3(arg1, arg2, host_flags));
9795 if (ret >= 0) {
9796 fd_trans_dup(arg1, arg2);
9797 }
9798 return ret;
9799 }
9800 #endif
9801 #ifdef TARGET_NR_getppid /* not on alpha */
9802 case TARGET_NR_getppid:
9803 return get_errno(getppid());
9804 #endif
9805 #ifdef TARGET_NR_getpgrp
9806 case TARGET_NR_getpgrp:
9807 return get_errno(getpgrp());
9808 #endif
9809 case TARGET_NR_setsid:
9810 return get_errno(setsid());
9811 #ifdef TARGET_NR_sigaction
9812 case TARGET_NR_sigaction:
9813 {
9814 #if defined(TARGET_MIPS)
9815 struct target_sigaction act, oact, *pact, *old_act;
9816
9817 if (arg2) {
9818 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9819 return -TARGET_EFAULT;
9820 act._sa_handler = old_act->_sa_handler;
9821 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
9822 act.sa_flags = old_act->sa_flags;
9823 unlock_user_struct(old_act, arg2, 0);
9824 pact = &act;
9825 } else {
9826 pact = NULL;
9827 }
9828
9829 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9830
9831 if (!is_error(ret) && arg3) {
9832 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9833 return -TARGET_EFAULT;
9834 old_act->_sa_handler = oact._sa_handler;
9835 old_act->sa_flags = oact.sa_flags;
9836 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
9837 old_act->sa_mask.sig[1] = 0;
9838 old_act->sa_mask.sig[2] = 0;
9839 old_act->sa_mask.sig[3] = 0;
9840 unlock_user_struct(old_act, arg3, 1);
9841 }
9842 #else
9843 struct target_old_sigaction *old_act;
9844 struct target_sigaction act, oact, *pact;
9845 if (arg2) {
9846 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9847 return -TARGET_EFAULT;
9848 act._sa_handler = old_act->_sa_handler;
9849 target_siginitset(&act.sa_mask, old_act->sa_mask);
9850 act.sa_flags = old_act->sa_flags;
9851 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9852 act.sa_restorer = old_act->sa_restorer;
9853 #endif
9854 unlock_user_struct(old_act, arg2, 0);
9855 pact = &act;
9856 } else {
9857 pact = NULL;
9858 }
9859 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9860 if (!is_error(ret) && arg3) {
9861 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9862 return -TARGET_EFAULT;
9863 old_act->_sa_handler = oact._sa_handler;
9864 old_act->sa_mask = oact.sa_mask.sig[0];
9865 old_act->sa_flags = oact.sa_flags;
9866 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9867 old_act->sa_restorer = oact.sa_restorer;
9868 #endif
9869 unlock_user_struct(old_act, arg3, 1);
9870 }
9871 #endif
9872 }
9873 return ret;
9874 #endif
9875 case TARGET_NR_rt_sigaction:
9876 {
9877 /*
9878 * For Alpha and SPARC this is a 5 argument syscall, with
9879 * a 'restorer' parameter which must be copied into the
9880 * sa_restorer field of the sigaction struct.
9881 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
9882 * and arg5 is the sigsetsize.
9883 */
9884 #if defined(TARGET_ALPHA)
9885 target_ulong sigsetsize = arg4;
9886 target_ulong restorer = arg5;
9887 #elif defined(TARGET_SPARC)
9888 target_ulong restorer = arg4;
9889 target_ulong sigsetsize = arg5;
9890 #else
9891 target_ulong sigsetsize = arg4;
9892 target_ulong restorer = 0;
9893 #endif
9894 struct target_sigaction *act = NULL;
9895 struct target_sigaction *oact = NULL;
9896
9897 if (sigsetsize != sizeof(target_sigset_t)) {
9898 return -TARGET_EINVAL;
9899 }
9900 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) {
9901 return -TARGET_EFAULT;
9902 }
9903 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
9904 ret = -TARGET_EFAULT;
9905 } else {
9906 ret = get_errno(do_sigaction(arg1, act, oact, restorer));
9907 if (oact) {
9908 unlock_user_struct(oact, arg3, 1);
9909 }
9910 }
9911 if (act) {
9912 unlock_user_struct(act, arg2, 0);
9913 }
9914 }
9915 return ret;
9916 #ifdef TARGET_NR_sgetmask /* not on alpha */
9917 case TARGET_NR_sgetmask:
9918 {
9919 sigset_t cur_set;
9920 abi_ulong target_set;
9921 ret = do_sigprocmask(0, NULL, &cur_set);
9922 if (!ret) {
9923 host_to_target_old_sigset(&target_set, &cur_set);
9924 ret = target_set;
9925 }
9926 }
9927 return ret;
9928 #endif
9929 #ifdef TARGET_NR_ssetmask /* not on alpha */
9930 case TARGET_NR_ssetmask:
9931 {
9932 sigset_t set, oset;
9933 abi_ulong target_set = arg1;
9934 target_to_host_old_sigset(&set, &target_set);
9935 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
9936 if (!ret) {
9937 host_to_target_old_sigset(&target_set, &oset);
9938 ret = target_set;
9939 }
9940 }
9941 return ret;
9942 #endif
9943 #ifdef TARGET_NR_sigprocmask
9944 case TARGET_NR_sigprocmask:
9945 {
9946 #if defined(TARGET_ALPHA)
9947 sigset_t set, oldset;
9948 abi_ulong mask;
9949 int how;
9950
9951 switch (arg1) {
9952 case TARGET_SIG_BLOCK:
9953 how = SIG_BLOCK;
9954 break;
9955 case TARGET_SIG_UNBLOCK:
9956 how = SIG_UNBLOCK;
9957 break;
9958 case TARGET_SIG_SETMASK:
9959 how = SIG_SETMASK;
9960 break;
9961 default:
9962 return -TARGET_EINVAL;
9963 }
9964 mask = arg2;
9965 target_to_host_old_sigset(&set, &mask);
9966
9967 ret = do_sigprocmask(how, &set, &oldset);
9968 if (!is_error(ret)) {
9969 host_to_target_old_sigset(&mask, &oldset);
9970 ret = mask;
9971 cpu_env->ir[IR_V0] = 0; /* force no error */
9972 }
9973 #else
9974 sigset_t set, oldset, *set_ptr;
9975 int how;
9976
9977 if (arg2) {
9978 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
9979 if (!p) {
9980 return -TARGET_EFAULT;
9981 }
9982 target_to_host_old_sigset(&set, p);
9983 unlock_user(p, arg2, 0);
9984 set_ptr = &set;
9985 switch (arg1) {
9986 case TARGET_SIG_BLOCK:
9987 how = SIG_BLOCK;
9988 break;
9989 case TARGET_SIG_UNBLOCK:
9990 how = SIG_UNBLOCK;
9991 break;
9992 case TARGET_SIG_SETMASK:
9993 how = SIG_SETMASK;
9994 break;
9995 default:
9996 return -TARGET_EINVAL;
9997 }
9998 } else {
9999 how = 0;
10000 set_ptr = NULL;
10001 }
10002 ret = do_sigprocmask(how, set_ptr, &oldset);
10003 if (!is_error(ret) && arg3) {
10004 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
10005 return -TARGET_EFAULT;
10006 host_to_target_old_sigset(p, &oldset);
10007 unlock_user(p, arg3, sizeof(target_sigset_t));
10008 }
10009 #endif
10010 }
10011 return ret;
10012 #endif
10013 case TARGET_NR_rt_sigprocmask:
10014 {
10015 int how = arg1;
10016 sigset_t set, oldset, *set_ptr;
10017
10018 if (arg4 != sizeof(target_sigset_t)) {
10019 return -TARGET_EINVAL;
10020 }
10021
10022 if (arg2) {
10023 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
10024 if (!p) {
10025 return -TARGET_EFAULT;
10026 }
10027 target_to_host_sigset(&set, p);
10028 unlock_user(p, arg2, 0);
10029 set_ptr = &set;
10030 switch(how) {
10031 case TARGET_SIG_BLOCK:
10032 how = SIG_BLOCK;
10033 break;
10034 case TARGET_SIG_UNBLOCK:
10035 how = SIG_UNBLOCK;
10036 break;
10037 case TARGET_SIG_SETMASK:
10038 how = SIG_SETMASK;
10039 break;
10040 default:
10041 return -TARGET_EINVAL;
10042 }
10043 } else {
10044 how = 0;
10045 set_ptr = NULL;
10046 }
10047 ret = do_sigprocmask(how, set_ptr, &oldset);
10048 if (!is_error(ret) && arg3) {
10049 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
10050 return -TARGET_EFAULT;
10051 host_to_target_sigset(p, &oldset);
10052 unlock_user(p, arg3, sizeof(target_sigset_t));
10053 }
10054 }
10055 return ret;
10056 #ifdef TARGET_NR_sigpending
10057 case TARGET_NR_sigpending:
10058 {
10059 sigset_t set;
10060 ret = get_errno(sigpending(&set));
10061 if (!is_error(ret)) {
10062 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
10063 return -TARGET_EFAULT;
10064 host_to_target_old_sigset(p, &set);
10065 unlock_user(p, arg1, sizeof(target_sigset_t));
10066 }
10067 }
10068 return ret;
10069 #endif
10070 case TARGET_NR_rt_sigpending:
10071 {
10072 sigset_t set;
10073
10074 /* Yes, this check is >, not != like most. We follow the kernel's
10075 * logic and it does it like this because it implements
10076 * NR_sigpending through the same code path, and in that case
10077 * the old_sigset_t is smaller in size.
10078 */
10079 if (arg2 > sizeof(target_sigset_t)) {
10080 return -TARGET_EINVAL;
10081 }
10082
10083 ret = get_errno(sigpending(&set));
10084 if (!is_error(ret)) {
10085 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
10086 return -TARGET_EFAULT;
10087 host_to_target_sigset(p, &set);
10088 unlock_user(p, arg1, sizeof(target_sigset_t));
10089 }
10090 }
10091 return ret;
10092 #ifdef TARGET_NR_sigsuspend
10093 case TARGET_NR_sigsuspend:
10094 {
10095 sigset_t *set;
10096
10097 #if defined(TARGET_ALPHA)
10098 TaskState *ts = get_task_state(cpu);
10099 /* target_to_host_old_sigset will bswap back */
10100 abi_ulong mask = tswapal(arg1);
10101 set = &ts->sigsuspend_mask;
10102 target_to_host_old_sigset(set, &mask);
10103 #else
10104 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t));
10105 if (ret != 0) {
10106 return ret;
10107 }
10108 #endif
10109 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE));
10110 finish_sigsuspend_mask(ret);
10111 }
10112 return ret;
10113 #endif
10114 case TARGET_NR_rt_sigsuspend:
10115 {
10116 sigset_t *set;
10117
10118 ret = process_sigsuspend_mask(&set, arg1, arg2);
10119 if (ret != 0) {
10120 return ret;
10121 }
10122 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE));
10123 finish_sigsuspend_mask(ret);
10124 }
10125 return ret;
10126 #ifdef TARGET_NR_rt_sigtimedwait
10127 case TARGET_NR_rt_sigtimedwait:
10128 {
10129 sigset_t set;
10130 struct timespec uts, *puts;
10131 siginfo_t uinfo;
10132
10133 if (arg4 != sizeof(target_sigset_t)) {
10134 return -TARGET_EINVAL;
10135 }
10136
10137 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
10138 return -TARGET_EFAULT;
10139 target_to_host_sigset(&set, p);
10140 unlock_user(p, arg1, 0);
10141 if (arg3) {
10142 puts = &uts;
10143 if (target_to_host_timespec(puts, arg3)) {
10144 return -TARGET_EFAULT;
10145 }
10146 } else {
10147 puts = NULL;
10148 }
10149 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
10150 SIGSET_T_SIZE));
10151 if (!is_error(ret)) {
10152 if (arg2) {
10153 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
10154 0);
10155 if (!p) {
10156 return -TARGET_EFAULT;
10157 }
10158 host_to_target_siginfo(p, &uinfo);
10159 unlock_user(p, arg2, sizeof(target_siginfo_t));
10160 }
10161 ret = host_to_target_signal(ret);
10162 }
10163 }
10164 return ret;
10165 #endif
10166 #ifdef TARGET_NR_rt_sigtimedwait_time64
10167 case TARGET_NR_rt_sigtimedwait_time64:
10168 {
10169 sigset_t set;
10170 struct timespec uts, *puts;
10171 siginfo_t uinfo;
10172
10173 if (arg4 != sizeof(target_sigset_t)) {
10174 return -TARGET_EINVAL;
10175 }
10176
10177 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
10178 if (!p) {
10179 return -TARGET_EFAULT;
10180 }
10181 target_to_host_sigset(&set, p);
10182 unlock_user(p, arg1, 0);
10183 if (arg3) {
10184 puts = &uts;
10185 if (target_to_host_timespec64(puts, arg3)) {
10186 return -TARGET_EFAULT;
10187 }
10188 } else {
10189 puts = NULL;
10190 }
10191 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
10192 SIGSET_T_SIZE));
10193 if (!is_error(ret)) {
10194 if (arg2) {
10195 p = lock_user(VERIFY_WRITE, arg2,
10196 sizeof(target_siginfo_t), 0);
10197 if (!p) {
10198 return -TARGET_EFAULT;
10199 }
10200 host_to_target_siginfo(p, &uinfo);
10201 unlock_user(p, arg2, sizeof(target_siginfo_t));
10202 }
10203 ret = host_to_target_signal(ret);
10204 }
10205 }
10206 return ret;
10207 #endif
10208 case TARGET_NR_rt_sigqueueinfo:
10209 {
10210 siginfo_t uinfo;
10211
10212 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
10213 if (!p) {
10214 return -TARGET_EFAULT;
10215 }
10216 target_to_host_siginfo(&uinfo, p);
10217 unlock_user(p, arg3, 0);
10218 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo));
10219 }
10220 return ret;
10221 case TARGET_NR_rt_tgsigqueueinfo:
10222 {
10223 siginfo_t uinfo;
10224
10225 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
10226 if (!p) {
10227 return -TARGET_EFAULT;
10228 }
10229 target_to_host_siginfo(&uinfo, p);
10230 unlock_user(p, arg4, 0);
10231 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo));
10232 }
10233 return ret;
10234 #ifdef TARGET_NR_sigreturn
10235 case TARGET_NR_sigreturn:
10236 if (block_signals()) {
10237 return -QEMU_ERESTARTSYS;
10238 }
10239 return do_sigreturn(cpu_env);
10240 #endif
10241 case TARGET_NR_rt_sigreturn:
10242 if (block_signals()) {
10243 return -QEMU_ERESTARTSYS;
10244 }
10245 return do_rt_sigreturn(cpu_env);
10246 case TARGET_NR_sethostname:
10247 if (!(p = lock_user_string(arg1)))
10248 return -TARGET_EFAULT;
10249 ret = get_errno(sethostname(p, arg2));
10250 unlock_user(p, arg1, 0);
10251 return ret;
10252 #ifdef TARGET_NR_setrlimit
10253 case TARGET_NR_setrlimit:
10254 {
10255 int resource = target_to_host_resource(arg1);
10256 struct target_rlimit *target_rlim;
10257 struct rlimit rlim;
10258 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
10259 return -TARGET_EFAULT;
10260 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
10261 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
10262 unlock_user_struct(target_rlim, arg2, 0);
10263 /*
10264 * If we just passed through resource limit settings for memory then
10265 * they would also apply to QEMU's own allocations, and QEMU will
10266 * crash or hang or die if its allocations fail. Ideally we would
10267 * track the guest allocations in QEMU and apply the limits ourselves.
10268 * For now, just tell the guest the call succeeded but don't actually
10269 * limit anything.
10270 */
10271 if (resource != RLIMIT_AS &&
10272 resource != RLIMIT_DATA &&
10273 resource != RLIMIT_STACK) {
10274 return get_errno(setrlimit(resource, &rlim));
10275 } else {
10276 return 0;
10277 }
10278 }
10279 #endif
10280 #ifdef TARGET_NR_getrlimit
10281 case TARGET_NR_getrlimit:
10282 {
10283 int resource = target_to_host_resource(arg1);
10284 struct target_rlimit *target_rlim;
10285 struct rlimit rlim;
10286
10287 ret = get_errno(getrlimit(resource, &rlim));
10288 if (!is_error(ret)) {
10289 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10290 return -TARGET_EFAULT;
10291 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10292 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10293 unlock_user_struct(target_rlim, arg2, 1);
10294 }
10295 }
10296 return ret;
10297 #endif
10298 case TARGET_NR_getrusage:
10299 {
10300 struct rusage rusage;
10301 ret = get_errno(getrusage(arg1, &rusage));
10302 if (!is_error(ret)) {
10303 ret = host_to_target_rusage(arg2, &rusage);
10304 }
10305 }
10306 return ret;
10307 #if defined(TARGET_NR_gettimeofday)
10308 case TARGET_NR_gettimeofday:
10309 {
10310 struct timeval tv;
10311 struct timezone tz;
10312
10313 ret = get_errno(gettimeofday(&tv, &tz));
10314 if (!is_error(ret)) {
10315 if (arg1 && copy_to_user_timeval(arg1, &tv)) {
10316 return -TARGET_EFAULT;
10317 }
10318 if (arg2 && copy_to_user_timezone(arg2, &tz)) {
10319 return -TARGET_EFAULT;
10320 }
10321 }
10322 }
10323 return ret;
10324 #endif
10325 #if defined(TARGET_NR_settimeofday)
10326 case TARGET_NR_settimeofday:
10327 {
10328 struct timeval tv, *ptv = NULL;
10329 struct timezone tz, *ptz = NULL;
10330
10331 if (arg1) {
10332 if (copy_from_user_timeval(&tv, arg1)) {
10333 return -TARGET_EFAULT;
10334 }
10335 ptv = &tv;
10336 }
10337
10338 if (arg2) {
10339 if (copy_from_user_timezone(&tz, arg2)) {
10340 return -TARGET_EFAULT;
10341 }
10342 ptz = &tz;
10343 }
10344
10345 return get_errno(settimeofday(ptv, ptz));
10346 }
10347 #endif
10348 #if defined(TARGET_NR_select)
10349 case TARGET_NR_select:
10350 #if defined(TARGET_WANT_NI_OLD_SELECT)
10351 /* some architectures used to have old_select here
10352 * but now ENOSYS it.
10353 */
10354 ret = -TARGET_ENOSYS;
10355 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
10356 ret = do_old_select(arg1);
10357 #else
10358 ret = do_select(arg1, arg2, arg3, arg4, arg5);
10359 #endif
10360 return ret;
10361 #endif
10362 #ifdef TARGET_NR_pselect6
10363 case TARGET_NR_pselect6:
10364 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false);
10365 #endif
10366 #ifdef TARGET_NR_pselect6_time64
10367 case TARGET_NR_pselect6_time64:
10368 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true);
10369 #endif
10370 #ifdef TARGET_NR_symlink
10371 case TARGET_NR_symlink:
10372 {
10373 void *p2;
10374 p = lock_user_string(arg1);
10375 p2 = lock_user_string(arg2);
10376 if (!p || !p2)
10377 ret = -TARGET_EFAULT;
10378 else
10379 ret = get_errno(symlink(p, p2));
10380 unlock_user(p2, arg2, 0);
10381 unlock_user(p, arg1, 0);
10382 }
10383 return ret;
10384 #endif
10385 #if defined(TARGET_NR_symlinkat)
10386 case TARGET_NR_symlinkat:
10387 {
10388 void *p2;
10389 p = lock_user_string(arg1);
10390 p2 = lock_user_string(arg3);
10391 if (!p || !p2)
10392 ret = -TARGET_EFAULT;
10393 else
10394 ret = get_errno(symlinkat(p, arg2, p2));
10395 unlock_user(p2, arg3, 0);
10396 unlock_user(p, arg1, 0);
10397 }
10398 return ret;
10399 #endif
10400 #ifdef TARGET_NR_readlink
10401 case TARGET_NR_readlink:
10402 {
10403 void *p2;
10404 p = lock_user_string(arg1);
10405 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10406 ret = get_errno(do_guest_readlink(p, p2, arg3));
10407 unlock_user(p2, arg2, ret);
10408 unlock_user(p, arg1, 0);
10409 }
10410 return ret;
10411 #endif
10412 #if defined(TARGET_NR_readlinkat)
10413 case TARGET_NR_readlinkat:
10414 {
10415 void *p2;
10416 p = lock_user_string(arg2);
10417 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
10418 if (!p || !p2) {
10419 ret = -TARGET_EFAULT;
10420 } else if (!arg4) {
10421 /* Short circuit this for the magic exe check. */
10422 ret = -TARGET_EINVAL;
10423 } else if (is_proc_myself((const char *)p, "exe")) {
10424 /*
10425 * Don't worry about sign mismatch as earlier mapping
10426 * logic would have thrown a bad address error.
10427 */
10428 ret = MIN(strlen(exec_path), arg4);
10429 /* We cannot NUL terminate the string. */
10430 memcpy(p2, exec_path, ret);
10431 } else {
10432 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
10433 }
10434 unlock_user(p2, arg3, ret);
10435 unlock_user(p, arg2, 0);
10436 }
10437 return ret;
10438 #endif
10439 #ifdef TARGET_NR_swapon
10440 case TARGET_NR_swapon:
10441 if (!(p = lock_user_string(arg1)))
10442 return -TARGET_EFAULT;
10443 ret = get_errno(swapon(p, arg2));
10444 unlock_user(p, arg1, 0);
10445 return ret;
10446 #endif
10447 case TARGET_NR_reboot:
10448 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
10449 /* arg4 must be ignored in all other cases */
10450 p = lock_user_string(arg4);
10451 if (!p) {
10452 return -TARGET_EFAULT;
10453 }
10454 ret = get_errno(reboot(arg1, arg2, arg3, p));
10455 unlock_user(p, arg4, 0);
10456 } else {
10457 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
10458 }
10459 return ret;
10460 #ifdef TARGET_NR_mmap
10461 case TARGET_NR_mmap:
10462 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
10463 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
10464 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
10465 || defined(TARGET_S390X)
10466 {
10467 abi_ulong *v;
10468 abi_ulong v1, v2, v3, v4, v5, v6;
10469 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
10470 return -TARGET_EFAULT;
10471 v1 = tswapal(v[0]);
10472 v2 = tswapal(v[1]);
10473 v3 = tswapal(v[2]);
10474 v4 = tswapal(v[3]);
10475 v5 = tswapal(v[4]);
10476 v6 = tswapal(v[5]);
10477 unlock_user(v, arg1, 0);
10478 return do_mmap(v1, v2, v3, v4, v5, v6);
10479 }
10480 #else
10481 /* mmap pointers are always untagged */
10482 return do_mmap(arg1, arg2, arg3, arg4, arg5, arg6);
10483 #endif
10484 #endif
10485 #ifdef TARGET_NR_mmap2
10486 case TARGET_NR_mmap2:
10487 #ifndef MMAP_SHIFT
10488 #define MMAP_SHIFT 12
10489 #endif
10490 return do_mmap(arg1, arg2, arg3, arg4, arg5,
10491 (off_t)(abi_ulong)arg6 << MMAP_SHIFT);
10492 #endif
10493 case TARGET_NR_munmap:
10494 arg1 = cpu_untagged_addr(cpu, arg1);
10495 return get_errno(target_munmap(arg1, arg2));
10496 case TARGET_NR_mprotect:
10497 arg1 = cpu_untagged_addr(cpu, arg1);
10498 {
10499 TaskState *ts = get_task_state(cpu);
10500 /* Special hack to detect libc making the stack executable. */
10501 if ((arg3 & PROT_GROWSDOWN)
10502 && arg1 >= ts->info->stack_limit
10503 && arg1 <= ts->info->start_stack) {
10504 arg3 &= ~PROT_GROWSDOWN;
10505 arg2 = arg2 + arg1 - ts->info->stack_limit;
10506 arg1 = ts->info->stack_limit;
10507 }
10508 }
10509 return get_errno(target_mprotect(arg1, arg2, arg3));
10510 #ifdef TARGET_NR_mremap
10511 case TARGET_NR_mremap:
10512 arg1 = cpu_untagged_addr(cpu, arg1);
10513 /* mremap new_addr (arg5) is always untagged */
10514 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
10515 #endif
10516 /* ??? msync/mlock/munlock are broken for softmmu. */
10517 #ifdef TARGET_NR_msync
10518 case TARGET_NR_msync:
10519 return get_errno(msync(g2h(cpu, arg1), arg2,
10520 target_to_host_msync_arg(arg3)));
10521 #endif
10522 #ifdef TARGET_NR_mlock
10523 case TARGET_NR_mlock:
10524 return get_errno(mlock(g2h(cpu, arg1), arg2));
10525 #endif
10526 #ifdef TARGET_NR_munlock
10527 case TARGET_NR_munlock:
10528 return get_errno(munlock(g2h(cpu, arg1), arg2));
10529 #endif
10530 #ifdef TARGET_NR_mlockall
10531 case TARGET_NR_mlockall:
10532 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
10533 #endif
10534 #ifdef TARGET_NR_munlockall
10535 case TARGET_NR_munlockall:
10536 return get_errno(munlockall());
10537 #endif
10538 #ifdef TARGET_NR_truncate
10539 case TARGET_NR_truncate:
10540 if (!(p = lock_user_string(arg1)))
10541 return -TARGET_EFAULT;
10542 ret = get_errno(truncate(p, arg2));
10543 unlock_user(p, arg1, 0);
10544 return ret;
10545 #endif
10546 #ifdef TARGET_NR_ftruncate
10547 case TARGET_NR_ftruncate:
10548 return get_errno(ftruncate(arg1, arg2));
10549 #endif
10550 case TARGET_NR_fchmod:
10551 return get_errno(fchmod(arg1, arg2));
10552 #if defined(TARGET_NR_fchmodat)
10553 case TARGET_NR_fchmodat:
10554 if (!(p = lock_user_string(arg2)))
10555 return -TARGET_EFAULT;
10556 ret = get_errno(fchmodat(arg1, p, arg3, 0));
10557 unlock_user(p, arg2, 0);
10558 return ret;
10559 #endif
10560 case TARGET_NR_getpriority:
10561 /* Note that negative values are valid for getpriority, so we must
10562 differentiate based on errno settings. */
10563 errno = 0;
10564 ret = getpriority(arg1, arg2);
10565 if (ret == -1 && errno != 0) {
10566 return -host_to_target_errno(errno);
10567 }
10568 #ifdef TARGET_ALPHA
10569 /* Return value is the unbiased priority. Signal no error. */
10570 cpu_env->ir[IR_V0] = 0;
10571 #else
10572 /* Return value is a biased priority to avoid negative numbers. */
10573 ret = 20 - ret;
10574 #endif
10575 return ret;
10576 case TARGET_NR_setpriority:
10577 return get_errno(setpriority(arg1, arg2, arg3));
10578 #ifdef TARGET_NR_statfs
10579 case TARGET_NR_statfs:
10580 if (!(p = lock_user_string(arg1))) {
10581 return -TARGET_EFAULT;
10582 }
10583 ret = get_errno(statfs(path(p), &stfs));
10584 unlock_user(p, arg1, 0);
10585 convert_statfs:
10586 if (!is_error(ret)) {
10587 struct target_statfs *target_stfs;
10588
10589 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
10590 return -TARGET_EFAULT;
10591 __put_user(stfs.f_type, &target_stfs->f_type);
10592 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10593 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10594 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10595 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10596 __put_user(stfs.f_files, &target_stfs->f_files);
10597 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10598 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10599 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10600 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10601 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10602 #ifdef _STATFS_F_FLAGS
10603 __put_user(stfs.f_flags, &target_stfs->f_flags);
10604 #else
10605 __put_user(0, &target_stfs->f_flags);
10606 #endif
10607 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10608 unlock_user_struct(target_stfs, arg2, 1);
10609 }
10610 return ret;
10611 #endif
10612 #ifdef TARGET_NR_fstatfs
10613 case TARGET_NR_fstatfs:
10614 ret = get_errno(fstatfs(arg1, &stfs));
10615 goto convert_statfs;
10616 #endif
10617 #ifdef TARGET_NR_statfs64
10618 case TARGET_NR_statfs64:
10619 if (!(p = lock_user_string(arg1))) {
10620 return -TARGET_EFAULT;
10621 }
10622 ret = get_errno(statfs(path(p), &stfs));
10623 unlock_user(p, arg1, 0);
10624 convert_statfs64:
10625 if (!is_error(ret)) {
10626 struct target_statfs64 *target_stfs;
10627
10628 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
10629 return -TARGET_EFAULT;
10630 __put_user(stfs.f_type, &target_stfs->f_type);
10631 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10632 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10633 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10634 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10635 __put_user(stfs.f_files, &target_stfs->f_files);
10636 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10637 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10638 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10639 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10640 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10641 #ifdef _STATFS_F_FLAGS
10642 __put_user(stfs.f_flags, &target_stfs->f_flags);
10643 #else
10644 __put_user(0, &target_stfs->f_flags);
10645 #endif
10646 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10647 unlock_user_struct(target_stfs, arg3, 1);
10648 }
10649 return ret;
10650 case TARGET_NR_fstatfs64:
10651 ret = get_errno(fstatfs(arg1, &stfs));
10652 goto convert_statfs64;
10653 #endif
10654 #ifdef TARGET_NR_socketcall
10655 case TARGET_NR_socketcall:
10656 return do_socketcall(arg1, arg2);
10657 #endif
10658 #ifdef TARGET_NR_accept
10659 case TARGET_NR_accept:
10660 return do_accept4(arg1, arg2, arg3, 0);
10661 #endif
10662 #ifdef TARGET_NR_accept4
10663 case TARGET_NR_accept4:
10664 return do_accept4(arg1, arg2, arg3, arg4);
10665 #endif
10666 #ifdef TARGET_NR_bind
10667 case TARGET_NR_bind:
10668 return do_bind(arg1, arg2, arg3);
10669 #endif
10670 #ifdef TARGET_NR_connect
10671 case TARGET_NR_connect:
10672 return do_connect(arg1, arg2, arg3);
10673 #endif
10674 #ifdef TARGET_NR_getpeername
10675 case TARGET_NR_getpeername:
10676 return do_getpeername(arg1, arg2, arg3);
10677 #endif
10678 #ifdef TARGET_NR_getsockname
10679 case TARGET_NR_getsockname:
10680 return do_getsockname(arg1, arg2, arg3);
10681 #endif
10682 #ifdef TARGET_NR_getsockopt
10683 case TARGET_NR_getsockopt:
10684 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
10685 #endif
10686 #ifdef TARGET_NR_listen
10687 case TARGET_NR_listen:
10688 return get_errno(listen(arg1, arg2));
10689 #endif
10690 #ifdef TARGET_NR_recv
10691 case TARGET_NR_recv:
10692 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
10693 #endif
10694 #ifdef TARGET_NR_recvfrom
10695 case TARGET_NR_recvfrom:
10696 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
10697 #endif
10698 #ifdef TARGET_NR_recvmsg
10699 case TARGET_NR_recvmsg:
10700 return do_sendrecvmsg(arg1, arg2, arg3, 0);
10701 #endif
10702 #ifdef TARGET_NR_send
10703 case TARGET_NR_send:
10704 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
10705 #endif
10706 #ifdef TARGET_NR_sendmsg
10707 case TARGET_NR_sendmsg:
10708 return do_sendrecvmsg(arg1, arg2, arg3, 1);
10709 #endif
10710 #ifdef TARGET_NR_sendmmsg
10711 case TARGET_NR_sendmmsg:
10712 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
10713 #endif
10714 #ifdef TARGET_NR_recvmmsg
10715 case TARGET_NR_recvmmsg:
10716 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
10717 #endif
10718 #ifdef TARGET_NR_sendto
10719 case TARGET_NR_sendto:
10720 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
10721 #endif
10722 #ifdef TARGET_NR_shutdown
10723 case TARGET_NR_shutdown:
10724 return get_errno(shutdown(arg1, arg2));
10725 #endif
10726 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
10727 case TARGET_NR_getrandom:
10728 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
10729 if (!p) {
10730 return -TARGET_EFAULT;
10731 }
10732 ret = get_errno(getrandom(p, arg2, arg3));
10733 unlock_user(p, arg1, ret);
10734 return ret;
10735 #endif
10736 #ifdef TARGET_NR_socket
10737 case TARGET_NR_socket:
10738 return do_socket(arg1, arg2, arg3);
10739 #endif
10740 #ifdef TARGET_NR_socketpair
10741 case TARGET_NR_socketpair:
10742 return do_socketpair(arg1, arg2, arg3, arg4);
10743 #endif
10744 #ifdef TARGET_NR_setsockopt
10745 case TARGET_NR_setsockopt:
10746 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
10747 #endif
10748 #if defined(TARGET_NR_syslog)
10749 case TARGET_NR_syslog:
10750 {
10751 int len = arg2;
10752
10753 switch (arg1) {
10754 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
10755 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
10756 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
10757 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
10758 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
10759 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
10760 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
10761 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
10762 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
10763 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
10764 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
10765 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
10766 {
10767 if (len < 0) {
10768 return -TARGET_EINVAL;
10769 }
10770 if (len == 0) {
10771 return 0;
10772 }
10773 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10774 if (!p) {
10775 return -TARGET_EFAULT;
10776 }
10777 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
10778 unlock_user(p, arg2, arg3);
10779 }
10780 return ret;
10781 default:
10782 return -TARGET_EINVAL;
10783 }
10784 }
10785 break;
10786 #endif
10787 case TARGET_NR_setitimer:
10788 {
10789 struct itimerval value, ovalue, *pvalue;
10790
10791 if (arg2) {
10792 pvalue = &value;
10793 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
10794 || copy_from_user_timeval(&pvalue->it_value,
10795 arg2 + sizeof(struct target_timeval)))
10796 return -TARGET_EFAULT;
10797 } else {
10798 pvalue = NULL;
10799 }
10800 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
10801 if (!is_error(ret) && arg3) {
10802 if (copy_to_user_timeval(arg3,
10803 &ovalue.it_interval)
10804 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
10805 &ovalue.it_value))
10806 return -TARGET_EFAULT;
10807 }
10808 }
10809 return ret;
10810 case TARGET_NR_getitimer:
10811 {
10812 struct itimerval value;
10813
10814 ret = get_errno(getitimer(arg1, &value));
10815 if (!is_error(ret) && arg2) {
10816 if (copy_to_user_timeval(arg2,
10817 &value.it_interval)
10818 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
10819 &value.it_value))
10820 return -TARGET_EFAULT;
10821 }
10822 }
10823 return ret;
10824 #ifdef TARGET_NR_stat
10825 case TARGET_NR_stat:
10826 if (!(p = lock_user_string(arg1))) {
10827 return -TARGET_EFAULT;
10828 }
10829 ret = get_errno(stat(path(p), &st));
10830 unlock_user(p, arg1, 0);
10831 goto do_stat;
10832 #endif
10833 #ifdef TARGET_NR_lstat
10834 case TARGET_NR_lstat:
10835 if (!(p = lock_user_string(arg1))) {
10836 return -TARGET_EFAULT;
10837 }
10838 ret = get_errno(lstat(path(p), &st));
10839 unlock_user(p, arg1, 0);
10840 goto do_stat;
10841 #endif
10842 #ifdef TARGET_NR_fstat
10843 case TARGET_NR_fstat:
10844 {
10845 ret = get_errno(fstat(arg1, &st));
10846 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
10847 do_stat:
10848 #endif
10849 if (!is_error(ret)) {
10850 struct target_stat *target_st;
10851
10852 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
10853 return -TARGET_EFAULT;
10854 memset(target_st, 0, sizeof(*target_st));
10855 __put_user(st.st_dev, &target_st->st_dev);
10856 __put_user(st.st_ino, &target_st->st_ino);
10857 __put_user(st.st_mode, &target_st->st_mode);
10858 __put_user(st.st_uid, &target_st->st_uid);
10859 __put_user(st.st_gid, &target_st->st_gid);
10860 __put_user(st.st_nlink, &target_st->st_nlink);
10861 __put_user(st.st_rdev, &target_st->st_rdev);
10862 __put_user(st.st_size, &target_st->st_size);
10863 __put_user(st.st_blksize, &target_st->st_blksize);
10864 __put_user(st.st_blocks, &target_st->st_blocks);
10865 __put_user(st.st_atime, &target_st->target_st_atime);
10866 __put_user(st.st_mtime, &target_st->target_st_mtime);
10867 __put_user(st.st_ctime, &target_st->target_st_ctime);
10868 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC)
10869 __put_user(st.st_atim.tv_nsec,
10870 &target_st->target_st_atime_nsec);
10871 __put_user(st.st_mtim.tv_nsec,
10872 &target_st->target_st_mtime_nsec);
10873 __put_user(st.st_ctim.tv_nsec,
10874 &target_st->target_st_ctime_nsec);
10875 #endif
10876 unlock_user_struct(target_st, arg2, 1);
10877 }
10878 }
10879 return ret;
10880 #endif
10881 case TARGET_NR_vhangup:
10882 return get_errno(vhangup());
10883 #ifdef TARGET_NR_syscall
10884 case TARGET_NR_syscall:
10885 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
10886 arg6, arg7, arg8, 0);
10887 #endif
10888 #if defined(TARGET_NR_wait4)
10889 case TARGET_NR_wait4:
10890 {
10891 int status;
10892 abi_long status_ptr = arg2;
10893 struct rusage rusage, *rusage_ptr;
10894 abi_ulong target_rusage = arg4;
10895 abi_long rusage_err;
10896 if (target_rusage)
10897 rusage_ptr = &rusage;
10898 else
10899 rusage_ptr = NULL;
10900 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
10901 if (!is_error(ret)) {
10902 if (status_ptr && ret) {
10903 status = host_to_target_waitstatus(status);
10904 if (put_user_s32(status, status_ptr))
10905 return -TARGET_EFAULT;
10906 }
10907 if (target_rusage) {
10908 rusage_err = host_to_target_rusage(target_rusage, &rusage);
10909 if (rusage_err) {
10910 ret = rusage_err;
10911 }
10912 }
10913 }
10914 }
10915 return ret;
10916 #endif
10917 #ifdef TARGET_NR_swapoff
10918 case TARGET_NR_swapoff:
10919 if (!(p = lock_user_string(arg1)))
10920 return -TARGET_EFAULT;
10921 ret = get_errno(swapoff(p));
10922 unlock_user(p, arg1, 0);
10923 return ret;
10924 #endif
10925 case TARGET_NR_sysinfo:
10926 {
10927 struct target_sysinfo *target_value;
10928 struct sysinfo value;
10929 ret = get_errno(sysinfo(&value));
10930 if (!is_error(ret) && arg1)
10931 {
10932 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
10933 return -TARGET_EFAULT;
10934 __put_user(value.uptime, &target_value->uptime);
10935 __put_user(value.loads[0], &target_value->loads[0]);
10936 __put_user(value.loads[1], &target_value->loads[1]);
10937 __put_user(value.loads[2], &target_value->loads[2]);
10938 __put_user(value.totalram, &target_value->totalram);
10939 __put_user(value.freeram, &target_value->freeram);
10940 __put_user(value.sharedram, &target_value->sharedram);
10941 __put_user(value.bufferram, &target_value->bufferram);
10942 __put_user(value.totalswap, &target_value->totalswap);
10943 __put_user(value.freeswap, &target_value->freeswap);
10944 __put_user(value.procs, &target_value->procs);
10945 __put_user(value.totalhigh, &target_value->totalhigh);
10946 __put_user(value.freehigh, &target_value->freehigh);
10947 __put_user(value.mem_unit, &target_value->mem_unit);
10948 unlock_user_struct(target_value, arg1, 1);
10949 }
10950 }
10951 return ret;
10952 #ifdef TARGET_NR_ipc
10953 case TARGET_NR_ipc:
10954 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
10955 #endif
10956 #ifdef TARGET_NR_semget
10957 case TARGET_NR_semget:
10958 return get_errno(semget(arg1, arg2, arg3));
10959 #endif
10960 #ifdef TARGET_NR_semop
10961 case TARGET_NR_semop:
10962 return do_semtimedop(arg1, arg2, arg3, 0, false);
10963 #endif
10964 #ifdef TARGET_NR_semtimedop
10965 case TARGET_NR_semtimedop:
10966 return do_semtimedop(arg1, arg2, arg3, arg4, false);
10967 #endif
10968 #ifdef TARGET_NR_semtimedop_time64
10969 case TARGET_NR_semtimedop_time64:
10970 return do_semtimedop(arg1, arg2, arg3, arg4, true);
10971 #endif
10972 #ifdef TARGET_NR_semctl
10973 case TARGET_NR_semctl:
10974 return do_semctl(arg1, arg2, arg3, arg4);
10975 #endif
10976 #ifdef TARGET_NR_msgctl
10977 case TARGET_NR_msgctl:
10978 return do_msgctl(arg1, arg2, arg3);
10979 #endif
10980 #ifdef TARGET_NR_msgget
10981 case TARGET_NR_msgget:
10982 return get_errno(msgget(arg1, arg2));
10983 #endif
10984 #ifdef TARGET_NR_msgrcv
10985 case TARGET_NR_msgrcv:
10986 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
10987 #endif
10988 #ifdef TARGET_NR_msgsnd
10989 case TARGET_NR_msgsnd:
10990 return do_msgsnd(arg1, arg2, arg3, arg4);
10991 #endif
10992 #ifdef TARGET_NR_shmget
10993 case TARGET_NR_shmget:
10994 return get_errno(shmget(arg1, arg2, arg3));
10995 #endif
10996 #ifdef TARGET_NR_shmctl
10997 case TARGET_NR_shmctl:
10998 return do_shmctl(arg1, arg2, arg3);
10999 #endif
11000 #ifdef TARGET_NR_shmat
11001 case TARGET_NR_shmat:
11002 return target_shmat(cpu_env, arg1, arg2, arg3);
11003 #endif
11004 #ifdef TARGET_NR_shmdt
11005 case TARGET_NR_shmdt:
11006 return target_shmdt(arg1);
11007 #endif
11008 case TARGET_NR_fsync:
11009 return get_errno(fsync(arg1));
11010 case TARGET_NR_clone:
11011 /* Linux manages to have three different orderings for its
11012 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
11013 * match the kernel's CONFIG_CLONE_* settings.
11014 * Microblaze is further special in that it uses a sixth
11015 * implicit argument to clone for the TLS pointer.
11016 */
11017 #if defined(TARGET_MICROBLAZE)
11018 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
11019 #elif defined(TARGET_CLONE_BACKWARDS)
11020 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
11021 #elif defined(TARGET_CLONE_BACKWARDS2)
11022 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
11023 #else
11024 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
11025 #endif
11026 return ret;
11027 #ifdef __NR_exit_group
11028 /* new thread calls */
11029 case TARGET_NR_exit_group:
11030 preexit_cleanup(cpu_env, arg1);
11031 return get_errno(exit_group(arg1));
11032 #endif
11033 case TARGET_NR_setdomainname:
11034 if (!(p = lock_user_string(arg1)))
11035 return -TARGET_EFAULT;
11036 ret = get_errno(setdomainname(p, arg2));
11037 unlock_user(p, arg1, 0);
11038 return ret;
11039 case TARGET_NR_uname:
11040 /* no need to transcode because we use the linux syscall */
11041 {
11042 struct new_utsname * buf;
11043
11044 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
11045 return -TARGET_EFAULT;
11046 ret = get_errno(sys_uname(buf));
11047 if (!is_error(ret)) {
11048 /* Overwrite the native machine name with whatever is being
11049 emulated. */
11050 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
11051 sizeof(buf->machine));
11052 /* Allow the user to override the reported release. */
11053 if (qemu_uname_release && *qemu_uname_release) {
11054 g_strlcpy(buf->release, qemu_uname_release,
11055 sizeof(buf->release));
11056 }
11057 }
11058 unlock_user_struct(buf, arg1, 1);
11059 }
11060 return ret;
11061 #ifdef TARGET_I386
11062 case TARGET_NR_modify_ldt:
11063 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
11064 #if !defined(TARGET_X86_64)
11065 case TARGET_NR_vm86:
11066 return do_vm86(cpu_env, arg1, arg2);
11067 #endif
11068 #endif
11069 #if defined(TARGET_NR_adjtimex)
11070 case TARGET_NR_adjtimex:
11071 {
11072 struct timex host_buf;
11073
11074 if (target_to_host_timex(&host_buf, arg1) != 0) {
11075 return -TARGET_EFAULT;
11076 }
11077 ret = get_errno(adjtimex(&host_buf));
11078 if (!is_error(ret)) {
11079 if (host_to_target_timex(arg1, &host_buf) != 0) {
11080 return -TARGET_EFAULT;
11081 }
11082 }
11083 }
11084 return ret;
11085 #endif
11086 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
11087 case TARGET_NR_clock_adjtime:
11088 {
11089 struct timex htx;
11090
11091 if (target_to_host_timex(&htx, arg2) != 0) {
11092 return -TARGET_EFAULT;
11093 }
11094 ret = get_errno(clock_adjtime(arg1, &htx));
11095 if (!is_error(ret) && host_to_target_timex(arg2, &htx)) {
11096 return -TARGET_EFAULT;
11097 }
11098 }
11099 return ret;
11100 #endif
11101 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
11102 case TARGET_NR_clock_adjtime64:
11103 {
11104 struct timex htx;
11105
11106 if (target_to_host_timex64(&htx, arg2) != 0) {
11107 return -TARGET_EFAULT;
11108 }
11109 ret = get_errno(clock_adjtime(arg1, &htx));
11110 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) {
11111 return -TARGET_EFAULT;
11112 }
11113 }
11114 return ret;
11115 #endif
11116 case TARGET_NR_getpgid:
11117 return get_errno(getpgid(arg1));
11118 case TARGET_NR_fchdir:
11119 return get_errno(fchdir(arg1));
11120 case TARGET_NR_personality:
11121 return get_errno(personality(arg1));
11122 #ifdef TARGET_NR__llseek /* Not on alpha */
11123 case TARGET_NR__llseek:
11124 {
11125 int64_t res;
11126 #if !defined(__NR_llseek)
11127 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
11128 if (res == -1) {
11129 ret = get_errno(res);
11130 } else {
11131 ret = 0;
11132 }
11133 #else
11134 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
11135 #endif
11136 if ((ret == 0) && put_user_s64(res, arg4)) {
11137 return -TARGET_EFAULT;
11138 }
11139 }
11140 return ret;
11141 #endif
11142 #ifdef TARGET_NR_getdents
11143 case TARGET_NR_getdents:
11144 return do_getdents(arg1, arg2, arg3);
11145 #endif /* TARGET_NR_getdents */
11146 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
11147 case TARGET_NR_getdents64:
11148 return do_getdents64(arg1, arg2, arg3);
11149 #endif /* TARGET_NR_getdents64 */
11150 #if defined(TARGET_NR__newselect)
11151 case TARGET_NR__newselect:
11152 return do_select(arg1, arg2, arg3, arg4, arg5);
11153 #endif
11154 #ifdef TARGET_NR_poll
11155 case TARGET_NR_poll:
11156 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false);
11157 #endif
11158 #ifdef TARGET_NR_ppoll
11159 case TARGET_NR_ppoll:
11160 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false);
11161 #endif
11162 #ifdef TARGET_NR_ppoll_time64
11163 case TARGET_NR_ppoll_time64:
11164 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true);
11165 #endif
11166 case TARGET_NR_flock:
11167 /* NOTE: the flock constant seems to be the same for every
11168 Linux platform */
11169 return get_errno(safe_flock(arg1, arg2));
11170 case TARGET_NR_readv:
11171 {
11172 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
11173 if (vec != NULL) {
11174 ret = get_errno(safe_readv(arg1, vec, arg3));
11175 unlock_iovec(vec, arg2, arg3, 1);
11176 } else {
11177 ret = -host_to_target_errno(errno);
11178 }
11179 }
11180 return ret;
11181 case TARGET_NR_writev:
11182 {
11183 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11184 if (vec != NULL) {
11185 ret = get_errno(safe_writev(arg1, vec, arg3));
11186 unlock_iovec(vec, arg2, arg3, 0);
11187 } else {
11188 ret = -host_to_target_errno(errno);
11189 }
11190 }
11191 return ret;
11192 #if defined(TARGET_NR_preadv)
11193 case TARGET_NR_preadv:
11194 {
11195 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
11196 if (vec != NULL) {
11197 unsigned long low, high;
11198
11199 target_to_host_low_high(arg4, arg5, &low, &high);
11200 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
11201 unlock_iovec(vec, arg2, arg3, 1);
11202 } else {
11203 ret = -host_to_target_errno(errno);
11204 }
11205 }
11206 return ret;
11207 #endif
11208 #if defined(TARGET_NR_pwritev)
11209 case TARGET_NR_pwritev:
11210 {
11211 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11212 if (vec != NULL) {
11213 unsigned long low, high;
11214
11215 target_to_host_low_high(arg4, arg5, &low, &high);
11216 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
11217 unlock_iovec(vec, arg2, arg3, 0);
11218 } else {
11219 ret = -host_to_target_errno(errno);
11220 }
11221 }
11222 return ret;
11223 #endif
11224 case TARGET_NR_getsid:
11225 return get_errno(getsid(arg1));
11226 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
11227 case TARGET_NR_fdatasync:
11228 return get_errno(fdatasync(arg1));
11229 #endif
11230 case TARGET_NR_sched_getaffinity:
11231 {
11232 unsigned int mask_size;
11233 unsigned long *mask;
11234
11235 /*
11236 * sched_getaffinity needs multiples of ulong, so need to take
11237 * care of mismatches between target ulong and host ulong sizes.
11238 */
11239 if (arg2 & (sizeof(abi_ulong) - 1)) {
11240 return -TARGET_EINVAL;
11241 }
11242 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
11243
11244 mask = alloca(mask_size);
11245 memset(mask, 0, mask_size);
11246 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
11247
11248 if (!is_error(ret)) {
11249 if (ret > arg2) {
11250 /* More data returned than the caller's buffer will fit.
11251 * This only happens if sizeof(abi_long) < sizeof(long)
11252 * and the caller passed us a buffer holding an odd number
11253 * of abi_longs. If the host kernel is actually using the
11254 * extra 4 bytes then fail EINVAL; otherwise we can just
11255 * ignore them and only copy the interesting part.
11256 */
11257 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
11258 if (numcpus > arg2 * 8) {
11259 return -TARGET_EINVAL;
11260 }
11261 ret = arg2;
11262 }
11263
11264 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
11265 return -TARGET_EFAULT;
11266 }
11267 }
11268 }
11269 return ret;
11270 case TARGET_NR_sched_setaffinity:
11271 {
11272 unsigned int mask_size;
11273 unsigned long *mask;
11274
11275 /*
11276 * sched_setaffinity needs multiples of ulong, so need to take
11277 * care of mismatches between target ulong and host ulong sizes.
11278 */
11279 if (arg2 & (sizeof(abi_ulong) - 1)) {
11280 return -TARGET_EINVAL;
11281 }
11282 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
11283 mask = alloca(mask_size);
11284
11285 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
11286 if (ret) {
11287 return ret;
11288 }
11289
11290 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
11291 }
11292 case TARGET_NR_getcpu:
11293 {
11294 unsigned cpuid, node;
11295 ret = get_errno(sys_getcpu(arg1 ? &cpuid : NULL,
11296 arg2 ? &node : NULL,
11297 NULL));
11298 if (is_error(ret)) {
11299 return ret;
11300 }
11301 if (arg1 && put_user_u32(cpuid, arg1)) {
11302 return -TARGET_EFAULT;
11303 }
11304 if (arg2 && put_user_u32(node, arg2)) {
11305 return -TARGET_EFAULT;
11306 }
11307 }
11308 return ret;
11309 case TARGET_NR_sched_setparam:
11310 {
11311 struct target_sched_param *target_schp;
11312 struct sched_param schp;
11313
11314 if (arg2 == 0) {
11315 return -TARGET_EINVAL;
11316 }
11317 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) {
11318 return -TARGET_EFAULT;
11319 }
11320 schp.sched_priority = tswap32(target_schp->sched_priority);
11321 unlock_user_struct(target_schp, arg2, 0);
11322 return get_errno(sys_sched_setparam(arg1, &schp));
11323 }
11324 case TARGET_NR_sched_getparam:
11325 {
11326 struct target_sched_param *target_schp;
11327 struct sched_param schp;
11328
11329 if (arg2 == 0) {
11330 return -TARGET_EINVAL;
11331 }
11332 ret = get_errno(sys_sched_getparam(arg1, &schp));
11333 if (!is_error(ret)) {
11334 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) {
11335 return -TARGET_EFAULT;
11336 }
11337 target_schp->sched_priority = tswap32(schp.sched_priority);
11338 unlock_user_struct(target_schp, arg2, 1);
11339 }
11340 }
11341 return ret;
11342 case TARGET_NR_sched_setscheduler:
11343 {
11344 struct target_sched_param *target_schp;
11345 struct sched_param schp;
11346 if (arg3 == 0) {
11347 return -TARGET_EINVAL;
11348 }
11349 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) {
11350 return -TARGET_EFAULT;
11351 }
11352 schp.sched_priority = tswap32(target_schp->sched_priority);
11353 unlock_user_struct(target_schp, arg3, 0);
11354 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp));
11355 }
11356 case TARGET_NR_sched_getscheduler:
11357 return get_errno(sys_sched_getscheduler(arg1));
11358 case TARGET_NR_sched_getattr:
11359 {
11360 struct target_sched_attr *target_scha;
11361 struct sched_attr scha;
11362 if (arg2 == 0) {
11363 return -TARGET_EINVAL;
11364 }
11365 if (arg3 > sizeof(scha)) {
11366 arg3 = sizeof(scha);
11367 }
11368 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4));
11369 if (!is_error(ret)) {
11370 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11371 if (!target_scha) {
11372 return -TARGET_EFAULT;
11373 }
11374 target_scha->size = tswap32(scha.size);
11375 target_scha->sched_policy = tswap32(scha.sched_policy);
11376 target_scha->sched_flags = tswap64(scha.sched_flags);
11377 target_scha->sched_nice = tswap32(scha.sched_nice);
11378 target_scha->sched_priority = tswap32(scha.sched_priority);
11379 target_scha->sched_runtime = tswap64(scha.sched_runtime);
11380 target_scha->sched_deadline = tswap64(scha.sched_deadline);
11381 target_scha->sched_period = tswap64(scha.sched_period);
11382 if (scha.size > offsetof(struct sched_attr, sched_util_min)) {
11383 target_scha->sched_util_min = tswap32(scha.sched_util_min);
11384 target_scha->sched_util_max = tswap32(scha.sched_util_max);
11385 }
11386 unlock_user(target_scha, arg2, arg3);
11387 }
11388 return ret;
11389 }
11390 case TARGET_NR_sched_setattr:
11391 {
11392 struct target_sched_attr *target_scha;
11393 struct sched_attr scha;
11394 uint32_t size;
11395 int zeroed;
11396 if (arg2 == 0) {
11397 return -TARGET_EINVAL;
11398 }
11399 if (get_user_u32(size, arg2)) {
11400 return -TARGET_EFAULT;
11401 }
11402 if (!size) {
11403 size = offsetof(struct target_sched_attr, sched_util_min);
11404 }
11405 if (size < offsetof(struct target_sched_attr, sched_util_min)) {
11406 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) {
11407 return -TARGET_EFAULT;
11408 }
11409 return -TARGET_E2BIG;
11410 }
11411
11412 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size);
11413 if (zeroed < 0) {
11414 return zeroed;
11415 } else if (zeroed == 0) {
11416 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) {
11417 return -TARGET_EFAULT;
11418 }
11419 return -TARGET_E2BIG;
11420 }
11421 if (size > sizeof(struct target_sched_attr)) {
11422 size = sizeof(struct target_sched_attr);
11423 }
11424
11425 target_scha = lock_user(VERIFY_READ, arg2, size, 1);
11426 if (!target_scha) {
11427 return -TARGET_EFAULT;
11428 }
11429 scha.size = size;
11430 scha.sched_policy = tswap32(target_scha->sched_policy);
11431 scha.sched_flags = tswap64(target_scha->sched_flags);
11432 scha.sched_nice = tswap32(target_scha->sched_nice);
11433 scha.sched_priority = tswap32(target_scha->sched_priority);
11434 scha.sched_runtime = tswap64(target_scha->sched_runtime);
11435 scha.sched_deadline = tswap64(target_scha->sched_deadline);
11436 scha.sched_period = tswap64(target_scha->sched_period);
11437 if (size > offsetof(struct target_sched_attr, sched_util_min)) {
11438 scha.sched_util_min = tswap32(target_scha->sched_util_min);
11439 scha.sched_util_max = tswap32(target_scha->sched_util_max);
11440 }
11441 unlock_user(target_scha, arg2, 0);
11442 return get_errno(sys_sched_setattr(arg1, &scha, arg3));
11443 }
11444 case TARGET_NR_sched_yield:
11445 return get_errno(sched_yield());
11446 case TARGET_NR_sched_get_priority_max:
11447 return get_errno(sched_get_priority_max(arg1));
11448 case TARGET_NR_sched_get_priority_min:
11449 return get_errno(sched_get_priority_min(arg1));
11450 #ifdef TARGET_NR_sched_rr_get_interval
11451 case TARGET_NR_sched_rr_get_interval:
11452 {
11453 struct timespec ts;
11454 ret = get_errno(sched_rr_get_interval(arg1, &ts));
11455 if (!is_error(ret)) {
11456 ret = host_to_target_timespec(arg2, &ts);
11457 }
11458 }
11459 return ret;
11460 #endif
11461 #ifdef TARGET_NR_sched_rr_get_interval_time64
11462 case TARGET_NR_sched_rr_get_interval_time64:
11463 {
11464 struct timespec ts;
11465 ret = get_errno(sched_rr_get_interval(arg1, &ts));
11466 if (!is_error(ret)) {
11467 ret = host_to_target_timespec64(arg2, &ts);
11468 }
11469 }
11470 return ret;
11471 #endif
11472 #if defined(TARGET_NR_nanosleep)
11473 case TARGET_NR_nanosleep:
11474 {
11475 struct timespec req, rem;
11476 target_to_host_timespec(&req, arg1);
11477 ret = get_errno(safe_nanosleep(&req, &rem));
11478 if (is_error(ret) && arg2) {
11479 host_to_target_timespec(arg2, &rem);
11480 }
11481 }
11482 return ret;
11483 #endif
11484 case TARGET_NR_prctl:
11485 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5);
11486 break;
11487 #ifdef TARGET_NR_arch_prctl
11488 case TARGET_NR_arch_prctl:
11489 return do_arch_prctl(cpu_env, arg1, arg2);
11490 #endif
11491 #ifdef TARGET_NR_pread64
11492 case TARGET_NR_pread64:
11493 if (regpairs_aligned(cpu_env, num)) {
11494 arg4 = arg5;
11495 arg5 = arg6;
11496 }
11497 if (arg2 == 0 && arg3 == 0) {
11498 /* Special-case NULL buffer and zero length, which should succeed */
11499 p = 0;
11500 } else {
11501 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11502 if (!p) {
11503 return -TARGET_EFAULT;
11504 }
11505 }
11506 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
11507 unlock_user(p, arg2, ret);
11508 return ret;
11509 case TARGET_NR_pwrite64:
11510 if (regpairs_aligned(cpu_env, num)) {
11511 arg4 = arg5;
11512 arg5 = arg6;
11513 }
11514 if (arg2 == 0 && arg3 == 0) {
11515 /* Special-case NULL buffer and zero length, which should succeed */
11516 p = 0;
11517 } else {
11518 p = lock_user(VERIFY_READ, arg2, arg3, 1);
11519 if (!p) {
11520 return -TARGET_EFAULT;
11521 }
11522 }
11523 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
11524 unlock_user(p, arg2, 0);
11525 return ret;
11526 #endif
11527 case TARGET_NR_getcwd:
11528 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
11529 return -TARGET_EFAULT;
11530 ret = get_errno(sys_getcwd1(p, arg2));
11531 unlock_user(p, arg1, ret);
11532 return ret;
11533 case TARGET_NR_capget:
11534 case TARGET_NR_capset:
11535 {
11536 struct target_user_cap_header *target_header;
11537 struct target_user_cap_data *target_data = NULL;
11538 struct __user_cap_header_struct header;
11539 struct __user_cap_data_struct data[2];
11540 struct __user_cap_data_struct *dataptr = NULL;
11541 int i, target_datalen;
11542 int data_items = 1;
11543
11544 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
11545 return -TARGET_EFAULT;
11546 }
11547 header.version = tswap32(target_header->version);
11548 header.pid = tswap32(target_header->pid);
11549
11550 if (header.version != _LINUX_CAPABILITY_VERSION) {
11551 /* Version 2 and up takes pointer to two user_data structs */
11552 data_items = 2;
11553 }
11554
11555 target_datalen = sizeof(*target_data) * data_items;
11556
11557 if (arg2) {
11558 if (num == TARGET_NR_capget) {
11559 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
11560 } else {
11561 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
11562 }
11563 if (!target_data) {
11564 unlock_user_struct(target_header, arg1, 0);
11565 return -TARGET_EFAULT;
11566 }
11567
11568 if (num == TARGET_NR_capset) {
11569 for (i = 0; i < data_items; i++) {
11570 data[i].effective = tswap32(target_data[i].effective);
11571 data[i].permitted = tswap32(target_data[i].permitted);
11572 data[i].inheritable = tswap32(target_data[i].inheritable);
11573 }
11574 }
11575
11576 dataptr = data;
11577 }
11578
11579 if (num == TARGET_NR_capget) {
11580 ret = get_errno(capget(&header, dataptr));
11581 } else {
11582 ret = get_errno(capset(&header, dataptr));
11583 }
11584
11585 /* The kernel always updates version for both capget and capset */
11586 target_header->version = tswap32(header.version);
11587 unlock_user_struct(target_header, arg1, 1);
11588
11589 if (arg2) {
11590 if (num == TARGET_NR_capget) {
11591 for (i = 0; i < data_items; i++) {
11592 target_data[i].effective = tswap32(data[i].effective);
11593 target_data[i].permitted = tswap32(data[i].permitted);
11594 target_data[i].inheritable = tswap32(data[i].inheritable);
11595 }
11596 unlock_user(target_data, arg2, target_datalen);
11597 } else {
11598 unlock_user(target_data, arg2, 0);
11599 }
11600 }
11601 return ret;
11602 }
11603 case TARGET_NR_sigaltstack:
11604 return do_sigaltstack(arg1, arg2, cpu_env);
11605
11606 #ifdef CONFIG_SENDFILE
11607 #ifdef TARGET_NR_sendfile
11608 case TARGET_NR_sendfile:
11609 {
11610 off_t *offp = NULL;
11611 off_t off;
11612 if (arg3) {
11613 ret = get_user_sal(off, arg3);
11614 if (is_error(ret)) {
11615 return ret;
11616 }
11617 offp = &off;
11618 }
11619 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11620 if (!is_error(ret) && arg3) {
11621 abi_long ret2 = put_user_sal(off, arg3);
11622 if (is_error(ret2)) {
11623 ret = ret2;
11624 }
11625 }
11626 return ret;
11627 }
11628 #endif
11629 #ifdef TARGET_NR_sendfile64
11630 case TARGET_NR_sendfile64:
11631 {
11632 off_t *offp = NULL;
11633 off_t off;
11634 if (arg3) {
11635 ret = get_user_s64(off, arg3);
11636 if (is_error(ret)) {
11637 return ret;
11638 }
11639 offp = &off;
11640 }
11641 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11642 if (!is_error(ret) && arg3) {
11643 abi_long ret2 = put_user_s64(off, arg3);
11644 if (is_error(ret2)) {
11645 ret = ret2;
11646 }
11647 }
11648 return ret;
11649 }
11650 #endif
11651 #endif
11652 #ifdef TARGET_NR_vfork
11653 case TARGET_NR_vfork:
11654 return get_errno(do_fork(cpu_env,
11655 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
11656 0, 0, 0, 0));
11657 #endif
11658 #ifdef TARGET_NR_ugetrlimit
11659 case TARGET_NR_ugetrlimit:
11660 {
11661 struct rlimit rlim;
11662 int resource = target_to_host_resource(arg1);
11663 ret = get_errno(getrlimit(resource, &rlim));
11664 if (!is_error(ret)) {
11665 struct target_rlimit *target_rlim;
11666 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
11667 return -TARGET_EFAULT;
11668 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
11669 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
11670 unlock_user_struct(target_rlim, arg2, 1);
11671 }
11672 return ret;
11673 }
11674 #endif
11675 #ifdef TARGET_NR_truncate64
11676 case TARGET_NR_truncate64:
11677 if (!(p = lock_user_string(arg1)))
11678 return -TARGET_EFAULT;
11679 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
11680 unlock_user(p, arg1, 0);
11681 return ret;
11682 #endif
11683 #ifdef TARGET_NR_ftruncate64
11684 case TARGET_NR_ftruncate64:
11685 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
11686 #endif
11687 #ifdef TARGET_NR_stat64
11688 case TARGET_NR_stat64:
11689 if (!(p = lock_user_string(arg1))) {
11690 return -TARGET_EFAULT;
11691 }
11692 ret = get_errno(stat(path(p), &st));
11693 unlock_user(p, arg1, 0);
11694 if (!is_error(ret))
11695 ret = host_to_target_stat64(cpu_env, arg2, &st);
11696 return ret;
11697 #endif
11698 #ifdef TARGET_NR_lstat64
11699 case TARGET_NR_lstat64:
11700 if (!(p = lock_user_string(arg1))) {
11701 return -TARGET_EFAULT;
11702 }
11703 ret = get_errno(lstat(path(p), &st));
11704 unlock_user(p, arg1, 0);
11705 if (!is_error(ret))
11706 ret = host_to_target_stat64(cpu_env, arg2, &st);
11707 return ret;
11708 #endif
11709 #ifdef TARGET_NR_fstat64
11710 case TARGET_NR_fstat64:
11711 ret = get_errno(fstat(arg1, &st));
11712 if (!is_error(ret))
11713 ret = host_to_target_stat64(cpu_env, arg2, &st);
11714 return ret;
11715 #endif
11716 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
11717 #ifdef TARGET_NR_fstatat64
11718 case TARGET_NR_fstatat64:
11719 #endif
11720 #ifdef TARGET_NR_newfstatat
11721 case TARGET_NR_newfstatat:
11722 #endif
11723 if (!(p = lock_user_string(arg2))) {
11724 return -TARGET_EFAULT;
11725 }
11726 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
11727 unlock_user(p, arg2, 0);
11728 if (!is_error(ret))
11729 ret = host_to_target_stat64(cpu_env, arg3, &st);
11730 return ret;
11731 #endif
11732 #if defined(TARGET_NR_statx)
11733 case TARGET_NR_statx:
11734 {
11735 struct target_statx *target_stx;
11736 int dirfd = arg1;
11737 int flags = arg3;
11738
11739 p = lock_user_string(arg2);
11740 if (p == NULL) {
11741 return -TARGET_EFAULT;
11742 }
11743 #if defined(__NR_statx)
11744 {
11745 /*
11746 * It is assumed that struct statx is architecture independent.
11747 */
11748 struct target_statx host_stx;
11749 int mask = arg4;
11750
11751 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
11752 if (!is_error(ret)) {
11753 if (host_to_target_statx(&host_stx, arg5) != 0) {
11754 unlock_user(p, arg2, 0);
11755 return -TARGET_EFAULT;
11756 }
11757 }
11758
11759 if (ret != -TARGET_ENOSYS) {
11760 unlock_user(p, arg2, 0);
11761 return ret;
11762 }
11763 }
11764 #endif
11765 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
11766 unlock_user(p, arg2, 0);
11767
11768 if (!is_error(ret)) {
11769 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
11770 return -TARGET_EFAULT;
11771 }
11772 memset(target_stx, 0, sizeof(*target_stx));
11773 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
11774 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
11775 __put_user(st.st_ino, &target_stx->stx_ino);
11776 __put_user(st.st_mode, &target_stx->stx_mode);
11777 __put_user(st.st_uid, &target_stx->stx_uid);
11778 __put_user(st.st_gid, &target_stx->stx_gid);
11779 __put_user(st.st_nlink, &target_stx->stx_nlink);
11780 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
11781 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
11782 __put_user(st.st_size, &target_stx->stx_size);
11783 __put_user(st.st_blksize, &target_stx->stx_blksize);
11784 __put_user(st.st_blocks, &target_stx->stx_blocks);
11785 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
11786 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
11787 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
11788 unlock_user_struct(target_stx, arg5, 1);
11789 }
11790 }
11791 return ret;
11792 #endif
11793 #ifdef TARGET_NR_lchown
11794 case TARGET_NR_lchown:
11795 if (!(p = lock_user_string(arg1)))
11796 return -TARGET_EFAULT;
11797 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
11798 unlock_user(p, arg1, 0);
11799 return ret;
11800 #endif
11801 #ifdef TARGET_NR_getuid
11802 case TARGET_NR_getuid:
11803 return get_errno(high2lowuid(getuid()));
11804 #endif
11805 #ifdef TARGET_NR_getgid
11806 case TARGET_NR_getgid:
11807 return get_errno(high2lowgid(getgid()));
11808 #endif
11809 #ifdef TARGET_NR_geteuid
11810 case TARGET_NR_geteuid:
11811 return get_errno(high2lowuid(geteuid()));
11812 #endif
11813 #ifdef TARGET_NR_getegid
11814 case TARGET_NR_getegid:
11815 return get_errno(high2lowgid(getegid()));
11816 #endif
11817 case TARGET_NR_setreuid:
11818 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
11819 case TARGET_NR_setregid:
11820 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
11821 case TARGET_NR_getgroups:
11822 { /* the same code as for TARGET_NR_getgroups32 */
11823 int gidsetsize = arg1;
11824 target_id *target_grouplist;
11825 g_autofree gid_t *grouplist = NULL;
11826 int i;
11827
11828 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
11829 return -TARGET_EINVAL;
11830 }
11831 if (gidsetsize > 0) {
11832 grouplist = g_try_new(gid_t, gidsetsize);
11833 if (!grouplist) {
11834 return -TARGET_ENOMEM;
11835 }
11836 }
11837 ret = get_errno(getgroups(gidsetsize, grouplist));
11838 if (!is_error(ret) && gidsetsize > 0) {
11839 target_grouplist = lock_user(VERIFY_WRITE, arg2,
11840 gidsetsize * sizeof(target_id), 0);
11841 if (!target_grouplist) {
11842 return -TARGET_EFAULT;
11843 }
11844 for (i = 0; i < ret; i++) {
11845 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
11846 }
11847 unlock_user(target_grouplist, arg2,
11848 gidsetsize * sizeof(target_id));
11849 }
11850 return ret;
11851 }
11852 case TARGET_NR_setgroups:
11853 { /* the same code as for TARGET_NR_setgroups32 */
11854 int gidsetsize = arg1;
11855 target_id *target_grouplist;
11856 g_autofree gid_t *grouplist = NULL;
11857 int i;
11858
11859 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
11860 return -TARGET_EINVAL;
11861 }
11862 if (gidsetsize > 0) {
11863 grouplist = g_try_new(gid_t, gidsetsize);
11864 if (!grouplist) {
11865 return -TARGET_ENOMEM;
11866 }
11867 target_grouplist = lock_user(VERIFY_READ, arg2,
11868 gidsetsize * sizeof(target_id), 1);
11869 if (!target_grouplist) {
11870 return -TARGET_EFAULT;
11871 }
11872 for (i = 0; i < gidsetsize; i++) {
11873 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
11874 }
11875 unlock_user(target_grouplist, arg2,
11876 gidsetsize * sizeof(target_id));
11877 }
11878 return get_errno(setgroups(gidsetsize, grouplist));
11879 }
11880 case TARGET_NR_fchown:
11881 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
11882 #if defined(TARGET_NR_fchownat)
11883 case TARGET_NR_fchownat:
11884 if (!(p = lock_user_string(arg2)))
11885 return -TARGET_EFAULT;
11886 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
11887 low2highgid(arg4), arg5));
11888 unlock_user(p, arg2, 0);
11889 return ret;
11890 #endif
11891 #ifdef TARGET_NR_setresuid
11892 case TARGET_NR_setresuid:
11893 return get_errno(sys_setresuid(low2highuid(arg1),
11894 low2highuid(arg2),
11895 low2highuid(arg3)));
11896 #endif
11897 #ifdef TARGET_NR_getresuid
11898 case TARGET_NR_getresuid:
11899 {
11900 uid_t ruid, euid, suid;
11901 ret = get_errno(getresuid(&ruid, &euid, &suid));
11902 if (!is_error(ret)) {
11903 if (put_user_id(high2lowuid(ruid), arg1)
11904 || put_user_id(high2lowuid(euid), arg2)
11905 || put_user_id(high2lowuid(suid), arg3))
11906 return -TARGET_EFAULT;
11907 }
11908 }
11909 return ret;
11910 #endif
11911 #ifdef TARGET_NR_getresgid
11912 case TARGET_NR_setresgid:
11913 return get_errno(sys_setresgid(low2highgid(arg1),
11914 low2highgid(arg2),
11915 low2highgid(arg3)));
11916 #endif
11917 #ifdef TARGET_NR_getresgid
11918 case TARGET_NR_getresgid:
11919 {
11920 gid_t rgid, egid, sgid;
11921 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11922 if (!is_error(ret)) {
11923 if (put_user_id(high2lowgid(rgid), arg1)
11924 || put_user_id(high2lowgid(egid), arg2)
11925 || put_user_id(high2lowgid(sgid), arg3))
11926 return -TARGET_EFAULT;
11927 }
11928 }
11929 return ret;
11930 #endif
11931 #ifdef TARGET_NR_chown
11932 case TARGET_NR_chown:
11933 if (!(p = lock_user_string(arg1)))
11934 return -TARGET_EFAULT;
11935 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
11936 unlock_user(p, arg1, 0);
11937 return ret;
11938 #endif
11939 case TARGET_NR_setuid:
11940 return get_errno(sys_setuid(low2highuid(arg1)));
11941 case TARGET_NR_setgid:
11942 return get_errno(sys_setgid(low2highgid(arg1)));
11943 case TARGET_NR_setfsuid:
11944 return get_errno(setfsuid(arg1));
11945 case TARGET_NR_setfsgid:
11946 return get_errno(setfsgid(arg1));
11947
11948 #ifdef TARGET_NR_lchown32
11949 case TARGET_NR_lchown32:
11950 if (!(p = lock_user_string(arg1)))
11951 return -TARGET_EFAULT;
11952 ret = get_errno(lchown(p, arg2, arg3));
11953 unlock_user(p, arg1, 0);
11954 return ret;
11955 #endif
11956 #ifdef TARGET_NR_getuid32
11957 case TARGET_NR_getuid32:
11958 return get_errno(getuid());
11959 #endif
11960
11961 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
11962 /* Alpha specific */
11963 case TARGET_NR_getxuid:
11964 {
11965 uid_t euid;
11966 euid=geteuid();
11967 cpu_env->ir[IR_A4]=euid;
11968 }
11969 return get_errno(getuid());
11970 #endif
11971 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
11972 /* Alpha specific */
11973 case TARGET_NR_getxgid:
11974 {
11975 uid_t egid;
11976 egid=getegid();
11977 cpu_env->ir[IR_A4]=egid;
11978 }
11979 return get_errno(getgid());
11980 #endif
11981 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
11982 /* Alpha specific */
11983 case TARGET_NR_osf_getsysinfo:
11984 ret = -TARGET_EOPNOTSUPP;
11985 switch (arg1) {
11986 case TARGET_GSI_IEEE_FP_CONTROL:
11987 {
11988 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
11989 uint64_t swcr = cpu_env->swcr;
11990
11991 swcr &= ~SWCR_STATUS_MASK;
11992 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
11993
11994 if (put_user_u64 (swcr, arg2))
11995 return -TARGET_EFAULT;
11996 ret = 0;
11997 }
11998 break;
11999
12000 /* case GSI_IEEE_STATE_AT_SIGNAL:
12001 -- Not implemented in linux kernel.
12002 case GSI_UACPROC:
12003 -- Retrieves current unaligned access state; not much used.
12004 case GSI_PROC_TYPE:
12005 -- Retrieves implver information; surely not used.
12006 case GSI_GET_HWRPB:
12007 -- Grabs a copy of the HWRPB; surely not used.
12008 */
12009 }
12010 return ret;
12011 #endif
12012 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
12013 /* Alpha specific */
12014 case TARGET_NR_osf_setsysinfo:
12015 ret = -TARGET_EOPNOTSUPP;
12016 switch (arg1) {
12017 case TARGET_SSI_IEEE_FP_CONTROL:
12018 {
12019 uint64_t swcr, fpcr;
12020
12021 if (get_user_u64 (swcr, arg2)) {
12022 return -TARGET_EFAULT;
12023 }
12024
12025 /*
12026 * The kernel calls swcr_update_status to update the
12027 * status bits from the fpcr at every point that it
12028 * could be queried. Therefore, we store the status
12029 * bits only in FPCR.
12030 */
12031 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
12032
12033 fpcr = cpu_alpha_load_fpcr(cpu_env);
12034 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
12035 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
12036 cpu_alpha_store_fpcr(cpu_env, fpcr);
12037 ret = 0;
12038 }
12039 break;
12040
12041 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
12042 {
12043 uint64_t exc, fpcr, fex;
12044
12045 if (get_user_u64(exc, arg2)) {
12046 return -TARGET_EFAULT;
12047 }
12048 exc &= SWCR_STATUS_MASK;
12049 fpcr = cpu_alpha_load_fpcr(cpu_env);
12050
12051 /* Old exceptions are not signaled. */
12052 fex = alpha_ieee_fpcr_to_swcr(fpcr);
12053 fex = exc & ~fex;
12054 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
12055 fex &= (cpu_env)->swcr;
12056
12057 /* Update the hardware fpcr. */
12058 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
12059 cpu_alpha_store_fpcr(cpu_env, fpcr);
12060
12061 if (fex) {
12062 int si_code = TARGET_FPE_FLTUNK;
12063 target_siginfo_t info;
12064
12065 if (fex & SWCR_TRAP_ENABLE_DNO) {
12066 si_code = TARGET_FPE_FLTUND;
12067 }
12068 if (fex & SWCR_TRAP_ENABLE_INE) {
12069 si_code = TARGET_FPE_FLTRES;
12070 }
12071 if (fex & SWCR_TRAP_ENABLE_UNF) {
12072 si_code = TARGET_FPE_FLTUND;
12073 }
12074 if (fex & SWCR_TRAP_ENABLE_OVF) {
12075 si_code = TARGET_FPE_FLTOVF;
12076 }
12077 if (fex & SWCR_TRAP_ENABLE_DZE) {
12078 si_code = TARGET_FPE_FLTDIV;
12079 }
12080 if (fex & SWCR_TRAP_ENABLE_INV) {
12081 si_code = TARGET_FPE_FLTINV;
12082 }
12083
12084 info.si_signo = SIGFPE;
12085 info.si_errno = 0;
12086 info.si_code = si_code;
12087 info._sifields._sigfault._addr = (cpu_env)->pc;
12088 queue_signal(cpu_env, info.si_signo,
12089 QEMU_SI_FAULT, &info);
12090 }
12091 ret = 0;
12092 }
12093 break;
12094
12095 /* case SSI_NVPAIRS:
12096 -- Used with SSIN_UACPROC to enable unaligned accesses.
12097 case SSI_IEEE_STATE_AT_SIGNAL:
12098 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
12099 -- Not implemented in linux kernel
12100 */
12101 }
12102 return ret;
12103 #endif
12104 #ifdef TARGET_NR_osf_sigprocmask
12105 /* Alpha specific. */
12106 case TARGET_NR_osf_sigprocmask:
12107 {
12108 abi_ulong mask;
12109 int how;
12110 sigset_t set, oldset;
12111
12112 switch(arg1) {
12113 case TARGET_SIG_BLOCK:
12114 how = SIG_BLOCK;
12115 break;
12116 case TARGET_SIG_UNBLOCK:
12117 how = SIG_UNBLOCK;
12118 break;
12119 case TARGET_SIG_SETMASK:
12120 how = SIG_SETMASK;
12121 break;
12122 default:
12123 return -TARGET_EINVAL;
12124 }
12125 mask = arg2;
12126 target_to_host_old_sigset(&set, &mask);
12127 ret = do_sigprocmask(how, &set, &oldset);
12128 if (!ret) {
12129 host_to_target_old_sigset(&mask, &oldset);
12130 ret = mask;
12131 }
12132 }
12133 return ret;
12134 #endif
12135
12136 #ifdef TARGET_NR_getgid32
12137 case TARGET_NR_getgid32:
12138 return get_errno(getgid());
12139 #endif
12140 #ifdef TARGET_NR_geteuid32
12141 case TARGET_NR_geteuid32:
12142 return get_errno(geteuid());
12143 #endif
12144 #ifdef TARGET_NR_getegid32
12145 case TARGET_NR_getegid32:
12146 return get_errno(getegid());
12147 #endif
12148 #ifdef TARGET_NR_setreuid32
12149 case TARGET_NR_setreuid32:
12150 return get_errno(setreuid(arg1, arg2));
12151 #endif
12152 #ifdef TARGET_NR_setregid32
12153 case TARGET_NR_setregid32:
12154 return get_errno(setregid(arg1, arg2));
12155 #endif
12156 #ifdef TARGET_NR_getgroups32
12157 case TARGET_NR_getgroups32:
12158 { /* the same code as for TARGET_NR_getgroups */
12159 int gidsetsize = arg1;
12160 uint32_t *target_grouplist;
12161 g_autofree gid_t *grouplist = NULL;
12162 int i;
12163
12164 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
12165 return -TARGET_EINVAL;
12166 }
12167 if (gidsetsize > 0) {
12168 grouplist = g_try_new(gid_t, gidsetsize);
12169 if (!grouplist) {
12170 return -TARGET_ENOMEM;
12171 }
12172 }
12173 ret = get_errno(getgroups(gidsetsize, grouplist));
12174 if (!is_error(ret) && gidsetsize > 0) {
12175 target_grouplist = lock_user(VERIFY_WRITE, arg2,
12176 gidsetsize * 4, 0);
12177 if (!target_grouplist) {
12178 return -TARGET_EFAULT;
12179 }
12180 for (i = 0; i < ret; i++) {
12181 target_grouplist[i] = tswap32(grouplist[i]);
12182 }
12183 unlock_user(target_grouplist, arg2, gidsetsize * 4);
12184 }
12185 return ret;
12186 }
12187 #endif
12188 #ifdef TARGET_NR_setgroups32
12189 case TARGET_NR_setgroups32:
12190 { /* the same code as for TARGET_NR_setgroups */
12191 int gidsetsize = arg1;
12192 uint32_t *target_grouplist;
12193 g_autofree gid_t *grouplist = NULL;
12194 int i;
12195
12196 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
12197 return -TARGET_EINVAL;
12198 }
12199 if (gidsetsize > 0) {
12200 grouplist = g_try_new(gid_t, gidsetsize);
12201 if (!grouplist) {
12202 return -TARGET_ENOMEM;
12203 }
12204 target_grouplist = lock_user(VERIFY_READ, arg2,
12205 gidsetsize * 4, 1);
12206 if (!target_grouplist) {
12207 return -TARGET_EFAULT;
12208 }
12209 for (i = 0; i < gidsetsize; i++) {
12210 grouplist[i] = tswap32(target_grouplist[i]);
12211 }
12212 unlock_user(target_grouplist, arg2, 0);
12213 }
12214 return get_errno(setgroups(gidsetsize, grouplist));
12215 }
12216 #endif
12217 #ifdef TARGET_NR_fchown32
12218 case TARGET_NR_fchown32:
12219 return get_errno(fchown(arg1, arg2, arg3));
12220 #endif
12221 #ifdef TARGET_NR_setresuid32
12222 case TARGET_NR_setresuid32:
12223 return get_errno(sys_setresuid(arg1, arg2, arg3));
12224 #endif
12225 #ifdef TARGET_NR_getresuid32
12226 case TARGET_NR_getresuid32:
12227 {
12228 uid_t ruid, euid, suid;
12229 ret = get_errno(getresuid(&ruid, &euid, &suid));
12230 if (!is_error(ret)) {
12231 if (put_user_u32(ruid, arg1)
12232 || put_user_u32(euid, arg2)
12233 || put_user_u32(suid, arg3))
12234 return -TARGET_EFAULT;
12235 }
12236 }
12237 return ret;
12238 #endif
12239 #ifdef TARGET_NR_setresgid32
12240 case TARGET_NR_setresgid32:
12241 return get_errno(sys_setresgid(arg1, arg2, arg3));
12242 #endif
12243 #ifdef TARGET_NR_getresgid32
12244 case TARGET_NR_getresgid32:
12245 {
12246 gid_t rgid, egid, sgid;
12247 ret = get_errno(getresgid(&rgid, &egid, &sgid));
12248 if (!is_error(ret)) {
12249 if (put_user_u32(rgid, arg1)
12250 || put_user_u32(egid, arg2)
12251 || put_user_u32(sgid, arg3))
12252 return -TARGET_EFAULT;
12253 }
12254 }
12255 return ret;
12256 #endif
12257 #ifdef TARGET_NR_chown32
12258 case TARGET_NR_chown32:
12259 if (!(p = lock_user_string(arg1)))
12260 return -TARGET_EFAULT;
12261 ret = get_errno(chown(p, arg2, arg3));
12262 unlock_user(p, arg1, 0);
12263 return ret;
12264 #endif
12265 #ifdef TARGET_NR_setuid32
12266 case TARGET_NR_setuid32:
12267 return get_errno(sys_setuid(arg1));
12268 #endif
12269 #ifdef TARGET_NR_setgid32
12270 case TARGET_NR_setgid32:
12271 return get_errno(sys_setgid(arg1));
12272 #endif
12273 #ifdef TARGET_NR_setfsuid32
12274 case TARGET_NR_setfsuid32:
12275 return get_errno(setfsuid(arg1));
12276 #endif
12277 #ifdef TARGET_NR_setfsgid32
12278 case TARGET_NR_setfsgid32:
12279 return get_errno(setfsgid(arg1));
12280 #endif
12281 #ifdef TARGET_NR_mincore
12282 case TARGET_NR_mincore:
12283 {
12284 void *a = lock_user(VERIFY_NONE, arg1, arg2, 0);
12285 if (!a) {
12286 return -TARGET_ENOMEM;
12287 }
12288 p = lock_user_string(arg3);
12289 if (!p) {
12290 ret = -TARGET_EFAULT;
12291 } else {
12292 ret = get_errno(mincore(a, arg2, p));
12293 unlock_user(p, arg3, ret);
12294 }
12295 unlock_user(a, arg1, 0);
12296 }
12297 return ret;
12298 #endif
12299 #ifdef TARGET_NR_arm_fadvise64_64
12300 case TARGET_NR_arm_fadvise64_64:
12301 /* arm_fadvise64_64 looks like fadvise64_64 but
12302 * with different argument order: fd, advice, offset, len
12303 * rather than the usual fd, offset, len, advice.
12304 * Note that offset and len are both 64-bit so appear as
12305 * pairs of 32-bit registers.
12306 */
12307 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
12308 target_offset64(arg5, arg6), arg2);
12309 return -host_to_target_errno(ret);
12310 #endif
12311
12312 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12313
12314 #ifdef TARGET_NR_fadvise64_64
12315 case TARGET_NR_fadvise64_64:
12316 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
12317 /* 6 args: fd, advice, offset (high, low), len (high, low) */
12318 ret = arg2;
12319 arg2 = arg3;
12320 arg3 = arg4;
12321 arg4 = arg5;
12322 arg5 = arg6;
12323 arg6 = ret;
12324 #else
12325 /* 6 args: fd, offset (high, low), len (high, low), advice */
12326 if (regpairs_aligned(cpu_env, num)) {
12327 /* offset is in (3,4), len in (5,6) and advice in 7 */
12328 arg2 = arg3;
12329 arg3 = arg4;
12330 arg4 = arg5;
12331 arg5 = arg6;
12332 arg6 = arg7;
12333 }
12334 #endif
12335 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
12336 target_offset64(arg4, arg5), arg6);
12337 return -host_to_target_errno(ret);
12338 #endif
12339
12340 #ifdef TARGET_NR_fadvise64
12341 case TARGET_NR_fadvise64:
12342 /* 5 args: fd, offset (high, low), len, advice */
12343 if (regpairs_aligned(cpu_env, num)) {
12344 /* offset is in (3,4), len in 5 and advice in 6 */
12345 arg2 = arg3;
12346 arg3 = arg4;
12347 arg4 = arg5;
12348 arg5 = arg6;
12349 }
12350 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
12351 return -host_to_target_errno(ret);
12352 #endif
12353
12354 #else /* not a 32-bit ABI */
12355 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
12356 #ifdef TARGET_NR_fadvise64_64
12357 case TARGET_NR_fadvise64_64:
12358 #endif
12359 #ifdef TARGET_NR_fadvise64
12360 case TARGET_NR_fadvise64:
12361 #endif
12362 #ifdef TARGET_S390X
12363 switch (arg4) {
12364 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
12365 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
12366 case 6: arg4 = POSIX_FADV_DONTNEED; break;
12367 case 7: arg4 = POSIX_FADV_NOREUSE; break;
12368 default: break;
12369 }
12370 #endif
12371 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
12372 #endif
12373 #endif /* end of 64-bit ABI fadvise handling */
12374
12375 #ifdef TARGET_NR_madvise
12376 case TARGET_NR_madvise:
12377 return target_madvise(arg1, arg2, arg3);
12378 #endif
12379 #ifdef TARGET_NR_fcntl64
12380 case TARGET_NR_fcntl64:
12381 {
12382 int cmd;
12383 struct flock64 fl;
12384 from_flock64_fn *copyfrom = copy_from_user_flock64;
12385 to_flock64_fn *copyto = copy_to_user_flock64;
12386
12387 #ifdef TARGET_ARM
12388 if (!cpu_env->eabi) {
12389 copyfrom = copy_from_user_oabi_flock64;
12390 copyto = copy_to_user_oabi_flock64;
12391 }
12392 #endif
12393
12394 cmd = target_to_host_fcntl_cmd(arg2);
12395 if (cmd == -TARGET_EINVAL) {
12396 return cmd;
12397 }
12398
12399 switch(arg2) {
12400 case TARGET_F_GETLK64:
12401 ret = copyfrom(&fl, arg3);
12402 if (ret) {
12403 break;
12404 }
12405 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
12406 if (ret == 0) {
12407 ret = copyto(arg3, &fl);
12408 }
12409 break;
12410
12411 case TARGET_F_SETLK64:
12412 case TARGET_F_SETLKW64:
12413 ret = copyfrom(&fl, arg3);
12414 if (ret) {
12415 break;
12416 }
12417 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
12418 break;
12419 default:
12420 ret = do_fcntl(arg1, arg2, arg3);
12421 break;
12422 }
12423 return ret;
12424 }
12425 #endif
12426 #ifdef TARGET_NR_cacheflush
12427 case TARGET_NR_cacheflush:
12428 /* self-modifying code is handled automatically, so nothing needed */
12429 return 0;
12430 #endif
12431 #ifdef TARGET_NR_getpagesize
12432 case TARGET_NR_getpagesize:
12433 return TARGET_PAGE_SIZE;
12434 #endif
12435 case TARGET_NR_gettid:
12436 return get_errno(sys_gettid());
12437 #ifdef TARGET_NR_readahead
12438 case TARGET_NR_readahead:
12439 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12440 if (regpairs_aligned(cpu_env, num)) {
12441 arg2 = arg3;
12442 arg3 = arg4;
12443 arg4 = arg5;
12444 }
12445 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
12446 #else
12447 ret = get_errno(readahead(arg1, arg2, arg3));
12448 #endif
12449 return ret;
12450 #endif
12451 #ifdef CONFIG_ATTR
12452 #ifdef TARGET_NR_setxattr
12453 case TARGET_NR_listxattr:
12454 case TARGET_NR_llistxattr:
12455 {
12456 void *b = 0;
12457 if (arg2) {
12458 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
12459 if (!b) {
12460 return -TARGET_EFAULT;
12461 }
12462 }
12463 p = lock_user_string(arg1);
12464 if (p) {
12465 if (num == TARGET_NR_listxattr) {
12466 ret = get_errno(listxattr(p, b, arg3));
12467 } else {
12468 ret = get_errno(llistxattr(p, b, arg3));
12469 }
12470 } else {
12471 ret = -TARGET_EFAULT;
12472 }
12473 unlock_user(p, arg1, 0);
12474 unlock_user(b, arg2, arg3);
12475 return ret;
12476 }
12477 case TARGET_NR_flistxattr:
12478 {
12479 void *b = 0;
12480 if (arg2) {
12481 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
12482 if (!b) {
12483 return -TARGET_EFAULT;
12484 }
12485 }
12486 ret = get_errno(flistxattr(arg1, b, arg3));
12487 unlock_user(b, arg2, arg3);
12488 return ret;
12489 }
12490 case TARGET_NR_setxattr:
12491 case TARGET_NR_lsetxattr:
12492 {
12493 void *n, *v = 0;
12494 if (arg3) {
12495 v = lock_user(VERIFY_READ, arg3, arg4, 1);
12496 if (!v) {
12497 return -TARGET_EFAULT;
12498 }
12499 }
12500 p = lock_user_string(arg1);
12501 n = lock_user_string(arg2);
12502 if (p && n) {
12503 if (num == TARGET_NR_setxattr) {
12504 ret = get_errno(setxattr(p, n, v, arg4, arg5));
12505 } else {
12506 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
12507 }
12508 } else {
12509 ret = -TARGET_EFAULT;
12510 }
12511 unlock_user(p, arg1, 0);
12512 unlock_user(n, arg2, 0);
12513 unlock_user(v, arg3, 0);
12514 }
12515 return ret;
12516 case TARGET_NR_fsetxattr:
12517 {
12518 void *n, *v = 0;
12519 if (arg3) {
12520 v = lock_user(VERIFY_READ, arg3, arg4, 1);
12521 if (!v) {
12522 return -TARGET_EFAULT;
12523 }
12524 }
12525 n = lock_user_string(arg2);
12526 if (n) {
12527 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
12528 } else {
12529 ret = -TARGET_EFAULT;
12530 }
12531 unlock_user(n, arg2, 0);
12532 unlock_user(v, arg3, 0);
12533 }
12534 return ret;
12535 case TARGET_NR_getxattr:
12536 case TARGET_NR_lgetxattr:
12537 {
12538 void *n, *v = 0;
12539 if (arg3) {
12540 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
12541 if (!v) {
12542 return -TARGET_EFAULT;
12543 }
12544 }
12545 p = lock_user_string(arg1);
12546 n = lock_user_string(arg2);
12547 if (p && n) {
12548 if (num == TARGET_NR_getxattr) {
12549 ret = get_errno(getxattr(p, n, v, arg4));
12550 } else {
12551 ret = get_errno(lgetxattr(p, n, v, arg4));
12552 }
12553 } else {
12554 ret = -TARGET_EFAULT;
12555 }
12556 unlock_user(p, arg1, 0);
12557 unlock_user(n, arg2, 0);
12558 unlock_user(v, arg3, arg4);
12559 }
12560 return ret;
12561 case TARGET_NR_fgetxattr:
12562 {
12563 void *n, *v = 0;
12564 if (arg3) {
12565 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
12566 if (!v) {
12567 return -TARGET_EFAULT;
12568 }
12569 }
12570 n = lock_user_string(arg2);
12571 if (n) {
12572 ret = get_errno(fgetxattr(arg1, n, v, arg4));
12573 } else {
12574 ret = -TARGET_EFAULT;
12575 }
12576 unlock_user(n, arg2, 0);
12577 unlock_user(v, arg3, arg4);
12578 }
12579 return ret;
12580 case TARGET_NR_removexattr:
12581 case TARGET_NR_lremovexattr:
12582 {
12583 void *n;
12584 p = lock_user_string(arg1);
12585 n = lock_user_string(arg2);
12586 if (p && n) {
12587 if (num == TARGET_NR_removexattr) {
12588 ret = get_errno(removexattr(p, n));
12589 } else {
12590 ret = get_errno(lremovexattr(p, n));
12591 }
12592 } else {
12593 ret = -TARGET_EFAULT;
12594 }
12595 unlock_user(p, arg1, 0);
12596 unlock_user(n, arg2, 0);
12597 }
12598 return ret;
12599 case TARGET_NR_fremovexattr:
12600 {
12601 void *n;
12602 n = lock_user_string(arg2);
12603 if (n) {
12604 ret = get_errno(fremovexattr(arg1, n));
12605 } else {
12606 ret = -TARGET_EFAULT;
12607 }
12608 unlock_user(n, arg2, 0);
12609 }
12610 return ret;
12611 #endif
12612 #endif /* CONFIG_ATTR */
12613 #ifdef TARGET_NR_set_thread_area
12614 case TARGET_NR_set_thread_area:
12615 #if defined(TARGET_MIPS)
12616 cpu_env->active_tc.CP0_UserLocal = arg1;
12617 return 0;
12618 #elif defined(TARGET_CRIS)
12619 if (arg1 & 0xff)
12620 ret = -TARGET_EINVAL;
12621 else {
12622 cpu_env->pregs[PR_PID] = arg1;
12623 ret = 0;
12624 }
12625 return ret;
12626 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
12627 return do_set_thread_area(cpu_env, arg1);
12628 #elif defined(TARGET_M68K)
12629 {
12630 TaskState *ts = get_task_state(cpu);
12631 ts->tp_value = arg1;
12632 return 0;
12633 }
12634 #else
12635 return -TARGET_ENOSYS;
12636 #endif
12637 #endif
12638 #ifdef TARGET_NR_get_thread_area
12639 case TARGET_NR_get_thread_area:
12640 #if defined(TARGET_I386) && defined(TARGET_ABI32)
12641 return do_get_thread_area(cpu_env, arg1);
12642 #elif defined(TARGET_M68K)
12643 {
12644 TaskState *ts = get_task_state(cpu);
12645 return ts->tp_value;
12646 }
12647 #else
12648 return -TARGET_ENOSYS;
12649 #endif
12650 #endif
12651 #ifdef TARGET_NR_getdomainname
12652 case TARGET_NR_getdomainname:
12653 return -TARGET_ENOSYS;
12654 #endif
12655
12656 #ifdef TARGET_NR_clock_settime
12657 case TARGET_NR_clock_settime:
12658 {
12659 struct timespec ts;
12660
12661 ret = target_to_host_timespec(&ts, arg2);
12662 if (!is_error(ret)) {
12663 ret = get_errno(clock_settime(arg1, &ts));
12664 }
12665 return ret;
12666 }
12667 #endif
12668 #ifdef TARGET_NR_clock_settime64
12669 case TARGET_NR_clock_settime64:
12670 {
12671 struct timespec ts;
12672
12673 ret = target_to_host_timespec64(&ts, arg2);
12674 if (!is_error(ret)) {
12675 ret = get_errno(clock_settime(arg1, &ts));
12676 }
12677 return ret;
12678 }
12679 #endif
12680 #ifdef TARGET_NR_clock_gettime
12681 case TARGET_NR_clock_gettime:
12682 {
12683 struct timespec ts;
12684 ret = get_errno(clock_gettime(arg1, &ts));
12685 if (!is_error(ret)) {
12686 ret = host_to_target_timespec(arg2, &ts);
12687 }
12688 return ret;
12689 }
12690 #endif
12691 #ifdef TARGET_NR_clock_gettime64
12692 case TARGET_NR_clock_gettime64:
12693 {
12694 struct timespec ts;
12695 ret = get_errno(clock_gettime(arg1, &ts));
12696 if (!is_error(ret)) {
12697 ret = host_to_target_timespec64(arg2, &ts);
12698 }
12699 return ret;
12700 }
12701 #endif
12702 #ifdef TARGET_NR_clock_getres
12703 case TARGET_NR_clock_getres:
12704 {
12705 struct timespec ts;
12706 ret = get_errno(clock_getres(arg1, &ts));
12707 if (!is_error(ret)) {
12708 host_to_target_timespec(arg2, &ts);
12709 }
12710 return ret;
12711 }
12712 #endif
12713 #ifdef TARGET_NR_clock_getres_time64
12714 case TARGET_NR_clock_getres_time64:
12715 {
12716 struct timespec ts;
12717 ret = get_errno(clock_getres(arg1, &ts));
12718 if (!is_error(ret)) {
12719 host_to_target_timespec64(arg2, &ts);
12720 }
12721 return ret;
12722 }
12723 #endif
12724 #ifdef TARGET_NR_clock_nanosleep
12725 case TARGET_NR_clock_nanosleep:
12726 {
12727 struct timespec ts;
12728 if (target_to_host_timespec(&ts, arg3)) {
12729 return -TARGET_EFAULT;
12730 }
12731 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12732 &ts, arg4 ? &ts : NULL));
12733 /*
12734 * if the call is interrupted by a signal handler, it fails
12735 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not
12736 * TIMER_ABSTIME, it returns the remaining unslept time in arg4.
12737 */
12738 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12739 host_to_target_timespec(arg4, &ts)) {
12740 return -TARGET_EFAULT;
12741 }
12742
12743 return ret;
12744 }
12745 #endif
12746 #ifdef TARGET_NR_clock_nanosleep_time64
12747 case TARGET_NR_clock_nanosleep_time64:
12748 {
12749 struct timespec ts;
12750
12751 if (target_to_host_timespec64(&ts, arg3)) {
12752 return -TARGET_EFAULT;
12753 }
12754
12755 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12756 &ts, arg4 ? &ts : NULL));
12757
12758 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12759 host_to_target_timespec64(arg4, &ts)) {
12760 return -TARGET_EFAULT;
12761 }
12762 return ret;
12763 }
12764 #endif
12765
12766 #if defined(TARGET_NR_set_tid_address)
12767 case TARGET_NR_set_tid_address:
12768 {
12769 TaskState *ts = get_task_state(cpu);
12770 ts->child_tidptr = arg1;
12771 /* do not call host set_tid_address() syscall, instead return tid() */
12772 return get_errno(sys_gettid());
12773 }
12774 #endif
12775
12776 case TARGET_NR_tkill:
12777 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
12778
12779 case TARGET_NR_tgkill:
12780 return get_errno(safe_tgkill((int)arg1, (int)arg2,
12781 target_to_host_signal(arg3)));
12782
12783 #ifdef TARGET_NR_set_robust_list
12784 case TARGET_NR_set_robust_list:
12785 case TARGET_NR_get_robust_list:
12786 /* The ABI for supporting robust futexes has userspace pass
12787 * the kernel a pointer to a linked list which is updated by
12788 * userspace after the syscall; the list is walked by the kernel
12789 * when the thread exits. Since the linked list in QEMU guest
12790 * memory isn't a valid linked list for the host and we have
12791 * no way to reliably intercept the thread-death event, we can't
12792 * support these. Silently return ENOSYS so that guest userspace
12793 * falls back to a non-robust futex implementation (which should
12794 * be OK except in the corner case of the guest crashing while
12795 * holding a mutex that is shared with another process via
12796 * shared memory).
12797 */
12798 return -TARGET_ENOSYS;
12799 #endif
12800
12801 #if defined(TARGET_NR_utimensat)
12802 case TARGET_NR_utimensat:
12803 {
12804 struct timespec *tsp, ts[2];
12805 if (!arg3) {
12806 tsp = NULL;
12807 } else {
12808 if (target_to_host_timespec(ts, arg3)) {
12809 return -TARGET_EFAULT;
12810 }
12811 if (target_to_host_timespec(ts + 1, arg3 +
12812 sizeof(struct target_timespec))) {
12813 return -TARGET_EFAULT;
12814 }
12815 tsp = ts;
12816 }
12817 if (!arg2)
12818 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12819 else {
12820 if (!(p = lock_user_string(arg2))) {
12821 return -TARGET_EFAULT;
12822 }
12823 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12824 unlock_user(p, arg2, 0);
12825 }
12826 }
12827 return ret;
12828 #endif
12829 #ifdef TARGET_NR_utimensat_time64
12830 case TARGET_NR_utimensat_time64:
12831 {
12832 struct timespec *tsp, ts[2];
12833 if (!arg3) {
12834 tsp = NULL;
12835 } else {
12836 if (target_to_host_timespec64(ts, arg3)) {
12837 return -TARGET_EFAULT;
12838 }
12839 if (target_to_host_timespec64(ts + 1, arg3 +
12840 sizeof(struct target__kernel_timespec))) {
12841 return -TARGET_EFAULT;
12842 }
12843 tsp = ts;
12844 }
12845 if (!arg2)
12846 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12847 else {
12848 p = lock_user_string(arg2);
12849 if (!p) {
12850 return -TARGET_EFAULT;
12851 }
12852 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12853 unlock_user(p, arg2, 0);
12854 }
12855 }
12856 return ret;
12857 #endif
12858 #ifdef TARGET_NR_futex
12859 case TARGET_NR_futex:
12860 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6);
12861 #endif
12862 #ifdef TARGET_NR_futex_time64
12863 case TARGET_NR_futex_time64:
12864 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6);
12865 #endif
12866 #ifdef CONFIG_INOTIFY
12867 #if defined(TARGET_NR_inotify_init)
12868 case TARGET_NR_inotify_init:
12869 ret = get_errno(inotify_init());
12870 if (ret >= 0) {
12871 fd_trans_register(ret, &target_inotify_trans);
12872 }
12873 return ret;
12874 #endif
12875 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1)
12876 case TARGET_NR_inotify_init1:
12877 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1,
12878 fcntl_flags_tbl)));
12879 if (ret >= 0) {
12880 fd_trans_register(ret, &target_inotify_trans);
12881 }
12882 return ret;
12883 #endif
12884 #if defined(TARGET_NR_inotify_add_watch)
12885 case TARGET_NR_inotify_add_watch:
12886 p = lock_user_string(arg2);
12887 ret = get_errno(inotify_add_watch(arg1, path(p), arg3));
12888 unlock_user(p, arg2, 0);
12889 return ret;
12890 #endif
12891 #if defined(TARGET_NR_inotify_rm_watch)
12892 case TARGET_NR_inotify_rm_watch:
12893 return get_errno(inotify_rm_watch(arg1, arg2));
12894 #endif
12895 #endif
12896
12897 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
12898 case TARGET_NR_mq_open:
12899 {
12900 struct mq_attr posix_mq_attr;
12901 struct mq_attr *pposix_mq_attr;
12902 int host_flags;
12903
12904 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
12905 pposix_mq_attr = NULL;
12906 if (arg4) {
12907 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
12908 return -TARGET_EFAULT;
12909 }
12910 pposix_mq_attr = &posix_mq_attr;
12911 }
12912 p = lock_user_string(arg1 - 1);
12913 if (!p) {
12914 return -TARGET_EFAULT;
12915 }
12916 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
12917 unlock_user (p, arg1, 0);
12918 }
12919 return ret;
12920
12921 case TARGET_NR_mq_unlink:
12922 p = lock_user_string(arg1 - 1);
12923 if (!p) {
12924 return -TARGET_EFAULT;
12925 }
12926 ret = get_errno(mq_unlink(p));
12927 unlock_user (p, arg1, 0);
12928 return ret;
12929
12930 #ifdef TARGET_NR_mq_timedsend
12931 case TARGET_NR_mq_timedsend:
12932 {
12933 struct timespec ts;
12934
12935 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12936 if (arg5 != 0) {
12937 if (target_to_host_timespec(&ts, arg5)) {
12938 return -TARGET_EFAULT;
12939 }
12940 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12941 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12942 return -TARGET_EFAULT;
12943 }
12944 } else {
12945 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12946 }
12947 unlock_user (p, arg2, arg3);
12948 }
12949 return ret;
12950 #endif
12951 #ifdef TARGET_NR_mq_timedsend_time64
12952 case TARGET_NR_mq_timedsend_time64:
12953 {
12954 struct timespec ts;
12955
12956 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12957 if (arg5 != 0) {
12958 if (target_to_host_timespec64(&ts, arg5)) {
12959 return -TARGET_EFAULT;
12960 }
12961 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12962 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12963 return -TARGET_EFAULT;
12964 }
12965 } else {
12966 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12967 }
12968 unlock_user(p, arg2, arg3);
12969 }
12970 return ret;
12971 #endif
12972
12973 #ifdef TARGET_NR_mq_timedreceive
12974 case TARGET_NR_mq_timedreceive:
12975 {
12976 struct timespec ts;
12977 unsigned int prio;
12978
12979 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12980 if (arg5 != 0) {
12981 if (target_to_host_timespec(&ts, arg5)) {
12982 return -TARGET_EFAULT;
12983 }
12984 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12985 &prio, &ts));
12986 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12987 return -TARGET_EFAULT;
12988 }
12989 } else {
12990 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12991 &prio, NULL));
12992 }
12993 unlock_user (p, arg2, arg3);
12994 if (arg4 != 0)
12995 put_user_u32(prio, arg4);
12996 }
12997 return ret;
12998 #endif
12999 #ifdef TARGET_NR_mq_timedreceive_time64
13000 case TARGET_NR_mq_timedreceive_time64:
13001 {
13002 struct timespec ts;
13003 unsigned int prio;
13004
13005 p = lock_user(VERIFY_READ, arg2, arg3, 1);
13006 if (arg5 != 0) {
13007 if (target_to_host_timespec64(&ts, arg5)) {
13008 return -TARGET_EFAULT;
13009 }
13010 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
13011 &prio, &ts));
13012 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
13013 return -TARGET_EFAULT;
13014 }
13015 } else {
13016 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
13017 &prio, NULL));
13018 }
13019 unlock_user(p, arg2, arg3);
13020 if (arg4 != 0) {
13021 put_user_u32(prio, arg4);
13022 }
13023 }
13024 return ret;
13025 #endif
13026
13027 /* Not implemented for now... */
13028 /* case TARGET_NR_mq_notify: */
13029 /* break; */
13030
13031 case TARGET_NR_mq_getsetattr:
13032 {
13033 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
13034 ret = 0;
13035 if (arg2 != 0) {
13036 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
13037 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
13038 &posix_mq_attr_out));
13039 } else if (arg3 != 0) {
13040 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
13041 }
13042 if (ret == 0 && arg3 != 0) {
13043 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
13044 }
13045 }
13046 return ret;
13047 #endif
13048
13049 #ifdef CONFIG_SPLICE
13050 #ifdef TARGET_NR_tee
13051 case TARGET_NR_tee:
13052 {
13053 ret = get_errno(tee(arg1,arg2,arg3,arg4));
13054 }
13055 return ret;
13056 #endif
13057 #ifdef TARGET_NR_splice
13058 case TARGET_NR_splice:
13059 {
13060 loff_t loff_in, loff_out;
13061 loff_t *ploff_in = NULL, *ploff_out = NULL;
13062 if (arg2) {
13063 if (get_user_u64(loff_in, arg2)) {
13064 return -TARGET_EFAULT;
13065 }
13066 ploff_in = &loff_in;
13067 }
13068 if (arg4) {
13069 if (get_user_u64(loff_out, arg4)) {
13070 return -TARGET_EFAULT;
13071 }
13072 ploff_out = &loff_out;
13073 }
13074 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
13075 if (arg2) {
13076 if (put_user_u64(loff_in, arg2)) {
13077 return -TARGET_EFAULT;
13078 }
13079 }
13080 if (arg4) {
13081 if (put_user_u64(loff_out, arg4)) {
13082 return -TARGET_EFAULT;
13083 }
13084 }
13085 }
13086 return ret;
13087 #endif
13088 #ifdef TARGET_NR_vmsplice
13089 case TARGET_NR_vmsplice:
13090 {
13091 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
13092 if (vec != NULL) {
13093 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
13094 unlock_iovec(vec, arg2, arg3, 0);
13095 } else {
13096 ret = -host_to_target_errno(errno);
13097 }
13098 }
13099 return ret;
13100 #endif
13101 #endif /* CONFIG_SPLICE */
13102 #ifdef CONFIG_EVENTFD
13103 #if defined(TARGET_NR_eventfd)
13104 case TARGET_NR_eventfd:
13105 ret = get_errno(eventfd(arg1, 0));
13106 if (ret >= 0) {
13107 fd_trans_register(ret, &target_eventfd_trans);
13108 }
13109 return ret;
13110 #endif
13111 #if defined(TARGET_NR_eventfd2)
13112 case TARGET_NR_eventfd2:
13113 {
13114 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC));
13115 if (arg2 & TARGET_O_NONBLOCK) {
13116 host_flags |= O_NONBLOCK;
13117 }
13118 if (arg2 & TARGET_O_CLOEXEC) {
13119 host_flags |= O_CLOEXEC;
13120 }
13121 ret = get_errno(eventfd(arg1, host_flags));
13122 if (ret >= 0) {
13123 fd_trans_register(ret, &target_eventfd_trans);
13124 }
13125 return ret;
13126 }
13127 #endif
13128 #endif /* CONFIG_EVENTFD */
13129 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
13130 case TARGET_NR_fallocate:
13131 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
13132 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
13133 target_offset64(arg5, arg6)));
13134 #else
13135 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
13136 #endif
13137 return ret;
13138 #endif
13139 #if defined(CONFIG_SYNC_FILE_RANGE)
13140 #if defined(TARGET_NR_sync_file_range)
13141 case TARGET_NR_sync_file_range:
13142 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
13143 #if defined(TARGET_MIPS)
13144 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
13145 target_offset64(arg5, arg6), arg7));
13146 #else
13147 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
13148 target_offset64(arg4, arg5), arg6));
13149 #endif /* !TARGET_MIPS */
13150 #else
13151 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
13152 #endif
13153 return ret;
13154 #endif
13155 #if defined(TARGET_NR_sync_file_range2) || \
13156 defined(TARGET_NR_arm_sync_file_range)
13157 #if defined(TARGET_NR_sync_file_range2)
13158 case TARGET_NR_sync_file_range2:
13159 #endif
13160 #if defined(TARGET_NR_arm_sync_file_range)
13161 case TARGET_NR_arm_sync_file_range:
13162 #endif
13163 /* This is like sync_file_range but the arguments are reordered */
13164 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
13165 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
13166 target_offset64(arg5, arg6), arg2));
13167 #else
13168 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
13169 #endif
13170 return ret;
13171 #endif
13172 #endif
13173 #if defined(TARGET_NR_signalfd4)
13174 case TARGET_NR_signalfd4:
13175 return do_signalfd4(arg1, arg2, arg4);
13176 #endif
13177 #if defined(TARGET_NR_signalfd)
13178 case TARGET_NR_signalfd:
13179 return do_signalfd4(arg1, arg2, 0);
13180 #endif
13181 #if defined(CONFIG_EPOLL)
13182 #if defined(TARGET_NR_epoll_create)
13183 case TARGET_NR_epoll_create:
13184 return get_errno(epoll_create(arg1));
13185 #endif
13186 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
13187 case TARGET_NR_epoll_create1:
13188 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
13189 #endif
13190 #if defined(TARGET_NR_epoll_ctl)
13191 case TARGET_NR_epoll_ctl:
13192 {
13193 struct epoll_event ep;
13194 struct epoll_event *epp = 0;
13195 if (arg4) {
13196 if (arg2 != EPOLL_CTL_DEL) {
13197 struct target_epoll_event *target_ep;
13198 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
13199 return -TARGET_EFAULT;
13200 }
13201 ep.events = tswap32(target_ep->events);
13202 /*
13203 * The epoll_data_t union is just opaque data to the kernel,
13204 * so we transfer all 64 bits across and need not worry what
13205 * actual data type it is.
13206 */
13207 ep.data.u64 = tswap64(target_ep->data.u64);
13208 unlock_user_struct(target_ep, arg4, 0);
13209 }
13210 /*
13211 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a
13212 * non-null pointer, even though this argument is ignored.
13213 *
13214 */
13215 epp = &ep;
13216 }
13217 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
13218 }
13219 #endif
13220
13221 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
13222 #if defined(TARGET_NR_epoll_wait)
13223 case TARGET_NR_epoll_wait:
13224 #endif
13225 #if defined(TARGET_NR_epoll_pwait)
13226 case TARGET_NR_epoll_pwait:
13227 #endif
13228 {
13229 struct target_epoll_event *target_ep;
13230 struct epoll_event *ep;
13231 int epfd = arg1;
13232 int maxevents = arg3;
13233 int timeout = arg4;
13234
13235 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
13236 return -TARGET_EINVAL;
13237 }
13238
13239 target_ep = lock_user(VERIFY_WRITE, arg2,
13240 maxevents * sizeof(struct target_epoll_event), 1);
13241 if (!target_ep) {
13242 return -TARGET_EFAULT;
13243 }
13244
13245 ep = g_try_new(struct epoll_event, maxevents);
13246 if (!ep) {
13247 unlock_user(target_ep, arg2, 0);
13248 return -TARGET_ENOMEM;
13249 }
13250
13251 switch (num) {
13252 #if defined(TARGET_NR_epoll_pwait)
13253 case TARGET_NR_epoll_pwait:
13254 {
13255 sigset_t *set = NULL;
13256
13257 if (arg5) {
13258 ret = process_sigsuspend_mask(&set, arg5, arg6);
13259 if (ret != 0) {
13260 break;
13261 }
13262 }
13263
13264 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
13265 set, SIGSET_T_SIZE));
13266
13267 if (set) {
13268 finish_sigsuspend_mask(ret);
13269 }
13270 break;
13271 }
13272 #endif
13273 #if defined(TARGET_NR_epoll_wait)
13274 case TARGET_NR_epoll_wait:
13275 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
13276 NULL, 0));
13277 break;
13278 #endif
13279 default:
13280 ret = -TARGET_ENOSYS;
13281 }
13282 if (!is_error(ret)) {
13283 int i;
13284 for (i = 0; i < ret; i++) {
13285 target_ep[i].events = tswap32(ep[i].events);
13286 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
13287 }
13288 unlock_user(target_ep, arg2,
13289 ret * sizeof(struct target_epoll_event));
13290 } else {
13291 unlock_user(target_ep, arg2, 0);
13292 }
13293 g_free(ep);
13294 return ret;
13295 }
13296 #endif
13297 #endif
13298 #ifdef TARGET_NR_prlimit64
13299 case TARGET_NR_prlimit64:
13300 {
13301 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
13302 struct target_rlimit64 *target_rnew, *target_rold;
13303 struct host_rlimit64 rnew, rold, *rnewp = 0;
13304 int resource = target_to_host_resource(arg2);
13305
13306 if (arg3 && (resource != RLIMIT_AS &&
13307 resource != RLIMIT_DATA &&
13308 resource != RLIMIT_STACK)) {
13309 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
13310 return -TARGET_EFAULT;
13311 }
13312 __get_user(rnew.rlim_cur, &target_rnew->rlim_cur);
13313 __get_user(rnew.rlim_max, &target_rnew->rlim_max);
13314 unlock_user_struct(target_rnew, arg3, 0);
13315 rnewp = &rnew;
13316 }
13317
13318 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
13319 if (!is_error(ret) && arg4) {
13320 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
13321 return -TARGET_EFAULT;
13322 }
13323 __put_user(rold.rlim_cur, &target_rold->rlim_cur);
13324 __put_user(rold.rlim_max, &target_rold->rlim_max);
13325 unlock_user_struct(target_rold, arg4, 1);
13326 }
13327 return ret;
13328 }
13329 #endif
13330 #ifdef TARGET_NR_gethostname
13331 case TARGET_NR_gethostname:
13332 {
13333 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
13334 if (name) {
13335 ret = get_errno(gethostname(name, arg2));
13336 unlock_user(name, arg1, arg2);
13337 } else {
13338 ret = -TARGET_EFAULT;
13339 }
13340 return ret;
13341 }
13342 #endif
13343 #ifdef TARGET_NR_atomic_cmpxchg_32
13344 case TARGET_NR_atomic_cmpxchg_32:
13345 {
13346 /* should use start_exclusive from main.c */
13347 abi_ulong mem_value;
13348 if (get_user_u32(mem_value, arg6)) {
13349 target_siginfo_t info;
13350 info.si_signo = SIGSEGV;
13351 info.si_errno = 0;
13352 info.si_code = TARGET_SEGV_MAPERR;
13353 info._sifields._sigfault._addr = arg6;
13354 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info);
13355 ret = 0xdeadbeef;
13356
13357 }
13358 if (mem_value == arg2)
13359 put_user_u32(arg1, arg6);
13360 return mem_value;
13361 }
13362 #endif
13363 #ifdef TARGET_NR_atomic_barrier
13364 case TARGET_NR_atomic_barrier:
13365 /* Like the kernel implementation and the
13366 qemu arm barrier, no-op this? */
13367 return 0;
13368 #endif
13369
13370 #ifdef TARGET_NR_timer_create
13371 case TARGET_NR_timer_create:
13372 {
13373 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
13374
13375 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
13376
13377 int clkid = arg1;
13378 int timer_index = next_free_host_timer();
13379
13380 if (timer_index < 0) {
13381 ret = -TARGET_EAGAIN;
13382 } else {
13383 timer_t *phtimer = g_posix_timers + timer_index;
13384
13385 if (arg2) {
13386 phost_sevp = &host_sevp;
13387 ret = target_to_host_sigevent(phost_sevp, arg2);
13388 if (ret != 0) {
13389 free_host_timer_slot(timer_index);
13390 return ret;
13391 }
13392 }
13393
13394 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
13395 if (ret) {
13396 free_host_timer_slot(timer_index);
13397 } else {
13398 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
13399 timer_delete(*phtimer);
13400 free_host_timer_slot(timer_index);
13401 return -TARGET_EFAULT;
13402 }
13403 }
13404 }
13405 return ret;
13406 }
13407 #endif
13408
13409 #ifdef TARGET_NR_timer_settime
13410 case TARGET_NR_timer_settime:
13411 {
13412 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
13413 * struct itimerspec * old_value */
13414 target_timer_t timerid = get_timer_id(arg1);
13415
13416 if (timerid < 0) {
13417 ret = timerid;
13418 } else if (arg3 == 0) {
13419 ret = -TARGET_EINVAL;
13420 } else {
13421 timer_t htimer = g_posix_timers[timerid];
13422 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
13423
13424 if (target_to_host_itimerspec(&hspec_new, arg3)) {
13425 return -TARGET_EFAULT;
13426 }
13427 ret = get_errno(
13428 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
13429 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
13430 return -TARGET_EFAULT;
13431 }
13432 }
13433 return ret;
13434 }
13435 #endif
13436
13437 #ifdef TARGET_NR_timer_settime64
13438 case TARGET_NR_timer_settime64:
13439 {
13440 target_timer_t timerid = get_timer_id(arg1);
13441
13442 if (timerid < 0) {
13443 ret = timerid;
13444 } else if (arg3 == 0) {
13445 ret = -TARGET_EINVAL;
13446 } else {
13447 timer_t htimer = g_posix_timers[timerid];
13448 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
13449
13450 if (target_to_host_itimerspec64(&hspec_new, arg3)) {
13451 return -TARGET_EFAULT;
13452 }
13453 ret = get_errno(
13454 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
13455 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) {
13456 return -TARGET_EFAULT;
13457 }
13458 }
13459 return ret;
13460 }
13461 #endif
13462
13463 #ifdef TARGET_NR_timer_gettime
13464 case TARGET_NR_timer_gettime:
13465 {
13466 /* args: timer_t timerid, struct itimerspec *curr_value */
13467 target_timer_t timerid = get_timer_id(arg1);
13468
13469 if (timerid < 0) {
13470 ret = timerid;
13471 } else if (!arg2) {
13472 ret = -TARGET_EFAULT;
13473 } else {
13474 timer_t htimer = g_posix_timers[timerid];
13475 struct itimerspec hspec;
13476 ret = get_errno(timer_gettime(htimer, &hspec));
13477
13478 if (host_to_target_itimerspec(arg2, &hspec)) {
13479 ret = -TARGET_EFAULT;
13480 }
13481 }
13482 return ret;
13483 }
13484 #endif
13485
13486 #ifdef TARGET_NR_timer_gettime64
13487 case TARGET_NR_timer_gettime64:
13488 {
13489 /* args: timer_t timerid, struct itimerspec64 *curr_value */
13490 target_timer_t timerid = get_timer_id(arg1);
13491
13492 if (timerid < 0) {
13493 ret = timerid;
13494 } else if (!arg2) {
13495 ret = -TARGET_EFAULT;
13496 } else {
13497 timer_t htimer = g_posix_timers[timerid];
13498 struct itimerspec hspec;
13499 ret = get_errno(timer_gettime(htimer, &hspec));
13500
13501 if (host_to_target_itimerspec64(arg2, &hspec)) {
13502 ret = -TARGET_EFAULT;
13503 }
13504 }
13505 return ret;
13506 }
13507 #endif
13508
13509 #ifdef TARGET_NR_timer_getoverrun
13510 case TARGET_NR_timer_getoverrun:
13511 {
13512 /* args: timer_t timerid */
13513 target_timer_t timerid = get_timer_id(arg1);
13514
13515 if (timerid < 0) {
13516 ret = timerid;
13517 } else {
13518 timer_t htimer = g_posix_timers[timerid];
13519 ret = get_errno(timer_getoverrun(htimer));
13520 }
13521 return ret;
13522 }
13523 #endif
13524
13525 #ifdef TARGET_NR_timer_delete
13526 case TARGET_NR_timer_delete:
13527 {
13528 /* args: timer_t timerid */
13529 target_timer_t timerid = get_timer_id(arg1);
13530
13531 if (timerid < 0) {
13532 ret = timerid;
13533 } else {
13534 timer_t htimer = g_posix_timers[timerid];
13535 ret = get_errno(timer_delete(htimer));
13536 free_host_timer_slot(timerid);
13537 }
13538 return ret;
13539 }
13540 #endif
13541
13542 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
13543 case TARGET_NR_timerfd_create:
13544 ret = get_errno(timerfd_create(arg1,
13545 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
13546 if (ret >= 0) {
13547 fd_trans_register(ret, &target_timerfd_trans);
13548 }
13549 return ret;
13550 #endif
13551
13552 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
13553 case TARGET_NR_timerfd_gettime:
13554 {
13555 struct itimerspec its_curr;
13556
13557 ret = get_errno(timerfd_gettime(arg1, &its_curr));
13558
13559 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
13560 return -TARGET_EFAULT;
13561 }
13562 }
13563 return ret;
13564 #endif
13565
13566 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD)
13567 case TARGET_NR_timerfd_gettime64:
13568 {
13569 struct itimerspec its_curr;
13570
13571 ret = get_errno(timerfd_gettime(arg1, &its_curr));
13572
13573 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) {
13574 return -TARGET_EFAULT;
13575 }
13576 }
13577 return ret;
13578 #endif
13579
13580 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
13581 case TARGET_NR_timerfd_settime:
13582 {
13583 struct itimerspec its_new, its_old, *p_new;
13584
13585 if (arg3) {
13586 if (target_to_host_itimerspec(&its_new, arg3)) {
13587 return -TARGET_EFAULT;
13588 }
13589 p_new = &its_new;
13590 } else {
13591 p_new = NULL;
13592 }
13593
13594 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
13595
13596 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
13597 return -TARGET_EFAULT;
13598 }
13599 }
13600 return ret;
13601 #endif
13602
13603 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)
13604 case TARGET_NR_timerfd_settime64:
13605 {
13606 struct itimerspec its_new, its_old, *p_new;
13607
13608 if (arg3) {
13609 if (target_to_host_itimerspec64(&its_new, arg3)) {
13610 return -TARGET_EFAULT;
13611 }
13612 p_new = &its_new;
13613 } else {
13614 p_new = NULL;
13615 }
13616
13617 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
13618
13619 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) {
13620 return -TARGET_EFAULT;
13621 }
13622 }
13623 return ret;
13624 #endif
13625
13626 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
13627 case TARGET_NR_ioprio_get:
13628 return get_errno(ioprio_get(arg1, arg2));
13629 #endif
13630
13631 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
13632 case TARGET_NR_ioprio_set:
13633 return get_errno(ioprio_set(arg1, arg2, arg3));
13634 #endif
13635
13636 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
13637 case TARGET_NR_setns:
13638 return get_errno(setns(arg1, arg2));
13639 #endif
13640 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
13641 case TARGET_NR_unshare:
13642 return get_errno(unshare(arg1));
13643 #endif
13644 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
13645 case TARGET_NR_kcmp:
13646 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
13647 #endif
13648 #ifdef TARGET_NR_swapcontext
13649 case TARGET_NR_swapcontext:
13650 /* PowerPC specific. */
13651 return do_swapcontext(cpu_env, arg1, arg2, arg3);
13652 #endif
13653 #ifdef TARGET_NR_memfd_create
13654 case TARGET_NR_memfd_create:
13655 p = lock_user_string(arg1);
13656 if (!p) {
13657 return -TARGET_EFAULT;
13658 }
13659 ret = get_errno(memfd_create(p, arg2));
13660 fd_trans_unregister(ret);
13661 unlock_user(p, arg1, 0);
13662 return ret;
13663 #endif
13664 #if defined TARGET_NR_membarrier && defined __NR_membarrier
13665 case TARGET_NR_membarrier:
13666 return get_errno(membarrier(arg1, arg2));
13667 #endif
13668
13669 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
13670 case TARGET_NR_copy_file_range:
13671 {
13672 loff_t inoff, outoff;
13673 loff_t *pinoff = NULL, *poutoff = NULL;
13674
13675 if (arg2) {
13676 if (get_user_u64(inoff, arg2)) {
13677 return -TARGET_EFAULT;
13678 }
13679 pinoff = &inoff;
13680 }
13681 if (arg4) {
13682 if (get_user_u64(outoff, arg4)) {
13683 return -TARGET_EFAULT;
13684 }
13685 poutoff = &outoff;
13686 }
13687 /* Do not sign-extend the count parameter. */
13688 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff,
13689 (abi_ulong)arg5, arg6));
13690 if (!is_error(ret) && ret > 0) {
13691 if (arg2) {
13692 if (put_user_u64(inoff, arg2)) {
13693 return -TARGET_EFAULT;
13694 }
13695 }
13696 if (arg4) {
13697 if (put_user_u64(outoff, arg4)) {
13698 return -TARGET_EFAULT;
13699 }
13700 }
13701 }
13702 }
13703 return ret;
13704 #endif
13705
13706 #if defined(TARGET_NR_pivot_root)
13707 case TARGET_NR_pivot_root:
13708 {
13709 void *p2;
13710 p = lock_user_string(arg1); /* new_root */
13711 p2 = lock_user_string(arg2); /* put_old */
13712 if (!p || !p2) {
13713 ret = -TARGET_EFAULT;
13714 } else {
13715 ret = get_errno(pivot_root(p, p2));
13716 }
13717 unlock_user(p2, arg2, 0);
13718 unlock_user(p, arg1, 0);
13719 }
13720 return ret;
13721 #endif
13722
13723 #if defined(TARGET_NR_riscv_hwprobe)
13724 case TARGET_NR_riscv_hwprobe:
13725 return do_riscv_hwprobe(cpu_env, arg1, arg2, arg3, arg4, arg5);
13726 #endif
13727
13728 default:
13729 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
13730 return -TARGET_ENOSYS;
13731 }
13732 return ret;
13733 }
13734
13735 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1,
13736 abi_long arg2, abi_long arg3, abi_long arg4,
13737 abi_long arg5, abi_long arg6, abi_long arg7,
13738 abi_long arg8)
13739 {
13740 CPUState *cpu = env_cpu(cpu_env);
13741 abi_long ret;
13742
13743 #ifdef DEBUG_ERESTARTSYS
13744 /* Debug-only code for exercising the syscall-restart code paths
13745 * in the per-architecture cpu main loops: restart every syscall
13746 * the guest makes once before letting it through.
13747 */
13748 {
13749 static bool flag;
13750 flag = !flag;
13751 if (flag) {
13752 return -QEMU_ERESTARTSYS;
13753 }
13754 }
13755 #endif
13756
13757 record_syscall_start(cpu, num, arg1,
13758 arg2, arg3, arg4, arg5, arg6, arg7, arg8);
13759
13760 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13761 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6);
13762 }
13763
13764 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
13765 arg5, arg6, arg7, arg8);
13766
13767 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13768 print_syscall_ret(cpu_env, num, ret, arg1, arg2,
13769 arg3, arg4, arg5, arg6);
13770 }
13771
13772 record_syscall_return(cpu, num, ret);
13773 return ret;
13774 }
Random patches