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docs/interop: Delete qmp-intro.txt
[qemu/ar7.git] / linux-user / syscall.c
blob89b58b386b17ec62c2c1770b19cade35d8f7dfa8
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 "target_mman.h"
27 #include <elf.h>
28 #include <endian.h>
29 #include <grp.h>
30 #include <sys/ipc.h>
31 #include <sys/msg.h>
32 #include <sys/wait.h>
33 #include <sys/mount.h>
34 #include <sys/file.h>
35 #include <sys/fsuid.h>
36 #include <sys/personality.h>
37 #include <sys/prctl.h>
38 #include <sys/resource.h>
39 #include <sys/swap.h>
40 #include <linux/capability.h>
41 #include <sched.h>
42 #include <sys/timex.h>
43 #include <sys/socket.h>
44 #include <linux/sockios.h>
45 #include <sys/un.h>
46 #include <sys/uio.h>
47 #include <poll.h>
48 #include <sys/times.h>
49 #include <sys/shm.h>
50 #include <sys/sem.h>
51 #include <sys/statfs.h>
52 #include <utime.h>
53 #include <sys/sysinfo.h>
54 #include <sys/signalfd.h>
55 //#include <sys/user.h>
56 #include <netinet/in.h>
57 #include <netinet/ip.h>
58 #include <netinet/tcp.h>
59 #include <netinet/udp.h>
60 #include <linux/wireless.h>
61 #include <linux/icmp.h>
62 #include <linux/icmpv6.h>
63 #include <linux/if_tun.h>
64 #include <linux/in6.h>
65 #include <linux/errqueue.h>
66 #include <linux/random.h>
67 #ifdef CONFIG_TIMERFD
68 #include <sys/timerfd.h>
69 #endif
70 #ifdef CONFIG_EVENTFD
71 #include <sys/eventfd.h>
72 #endif
73 #ifdef CONFIG_EPOLL
74 #include <sys/epoll.h>
75 #endif
76 #ifdef CONFIG_ATTR
77 #include "qemu/xattr.h"
78 #endif
79 #ifdef CONFIG_SENDFILE
80 #include <sys/sendfile.h>
81 #endif
82 #ifdef HAVE_SYS_KCOV_H
83 #include <sys/kcov.h>
84 #endif
85
86 #define termios host_termios
87 #define winsize host_winsize
88 #define termio host_termio
89 #define sgttyb host_sgttyb /* same as target */
90 #define tchars host_tchars /* same as target */
91 #define ltchars host_ltchars /* same as target */
92
93 #include <linux/termios.h>
94 #include <linux/unistd.h>
95 #include <linux/cdrom.h>
96 #include <linux/hdreg.h>
97 #include <linux/soundcard.h>
98 #include <linux/kd.h>
99 #include <linux/mtio.h>
100 #include <linux/fs.h>
101 #include <linux/fd.h>
102 #if defined(CONFIG_FIEMAP)
103 #include <linux/fiemap.h>
104 #endif
105 #include <linux/fb.h>
106 #if defined(CONFIG_USBFS)
107 #include <linux/usbdevice_fs.h>
108 #include <linux/usb/ch9.h>
109 #endif
110 #include <linux/vt.h>
111 #include <linux/dm-ioctl.h>
112 #include <linux/reboot.h>
113 #include <linux/route.h>
114 #include <linux/filter.h>
115 #include <linux/blkpg.h>
116 #include <netpacket/packet.h>
117 #include <linux/netlink.h>
118 #include <linux/if_alg.h>
119 #include <linux/rtc.h>
120 #include <sound/asound.h>
121 #ifdef HAVE_BTRFS_H
122 #include <linux/btrfs.h>
123 #endif
124 #ifdef HAVE_DRM_H
125 #include <libdrm/drm.h>
126 #include <libdrm/i915_drm.h>
127 #endif
128 #include "linux_loop.h"
129 #include "uname.h"
130
131 #include "qemu.h"
132 #include "user-internals.h"
133 #include "strace.h"
134 #include "signal-common.h"
135 #include "loader.h"
136 #include "user-mmap.h"
137 #include "user/safe-syscall.h"
138 #include "qemu/guest-random.h"
139 #include "qemu/selfmap.h"
140 #include "user/syscall-trace.h"
141 #include "special-errno.h"
142 #include "qapi/error.h"
143 #include "fd-trans.h"
144 #include "tcg/tcg.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, uint, fd, struct linux_dirent *, dirp, uint, 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, uint, fd, struct linux_dirent64 *, dirp, uint, count);
318 #endif
319 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
320 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
321 loff_t *, res, uint, 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 { 0, 0, 0, 0 }
459 };
460
461 _syscall2(int, sys_getcwd1, char *, buf, size_t, size)
462
463 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64)
464 #if defined(__NR_utimensat)
465 #define __NR_sys_utimensat __NR_utimensat
466 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
467 const struct timespec *,tsp,int,flags)
468 #else
469 static int sys_utimensat(int dirfd, const char *pathname,
470 const struct timespec times[2], int flags)
471 {
472 errno = ENOSYS;
473 return -1;
474 }
475 #endif
476 #endif /* TARGET_NR_utimensat */
477
478 #ifdef TARGET_NR_renameat2
479 #if defined(__NR_renameat2)
480 #define __NR_sys_renameat2 __NR_renameat2
481 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
482 const char *, new, unsigned int, flags)
483 #else
484 static int sys_renameat2(int oldfd, const char *old,
485 int newfd, const char *new, int flags)
486 {
487 if (flags == 0) {
488 return renameat(oldfd, old, newfd, new);
489 }
490 errno = ENOSYS;
491 return -1;
492 }
493 #endif
494 #endif /* TARGET_NR_renameat2 */
495
496 #ifdef CONFIG_INOTIFY
497 #include <sys/inotify.h>
498 #else
499 /* Userspace can usually survive runtime without inotify */
500 #undef TARGET_NR_inotify_init
501 #undef TARGET_NR_inotify_init1
502 #undef TARGET_NR_inotify_add_watch
503 #undef TARGET_NR_inotify_rm_watch
504 #endif /* CONFIG_INOTIFY */
505
506 #if defined(TARGET_NR_prlimit64)
507 #ifndef __NR_prlimit64
508 # define __NR_prlimit64 -1
509 #endif
510 #define __NR_sys_prlimit64 __NR_prlimit64
511 /* The glibc rlimit structure may not be that used by the underlying syscall */
512 struct host_rlimit64 {
513 uint64_t rlim_cur;
514 uint64_t rlim_max;
515 };
516 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
517 const struct host_rlimit64 *, new_limit,
518 struct host_rlimit64 *, old_limit)
519 #endif
520
521
522 #if defined(TARGET_NR_timer_create)
523 /* Maximum of 32 active POSIX timers allowed at any one time. */
524 #define GUEST_TIMER_MAX 32
525 static timer_t g_posix_timers[GUEST_TIMER_MAX];
526 static int g_posix_timer_allocated[GUEST_TIMER_MAX];
527
528 static inline int next_free_host_timer(void)
529 {
530 int k;
531 for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) {
532 if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) {
533 return k;
534 }
535 }
536 return -1;
537 }
538
539 static inline void free_host_timer_slot(int id)
540 {
541 qatomic_store_release(g_posix_timer_allocated + id, 0);
542 }
543 #endif
544
545 static inline int host_to_target_errno(int host_errno)
546 {
547 switch (host_errno) {
548 #define E(X) case X: return TARGET_##X;
549 #include "errnos.c.inc"
550 #undef E
551 default:
552 return host_errno;
553 }
554 }
555
556 static inline int target_to_host_errno(int target_errno)
557 {
558 switch (target_errno) {
559 #define E(X) case TARGET_##X: return X;
560 #include "errnos.c.inc"
561 #undef E
562 default:
563 return target_errno;
564 }
565 }
566
567 abi_long get_errno(abi_long ret)
568 {
569 if (ret == -1)
570 return -host_to_target_errno(errno);
571 else
572 return ret;
573 }
574
575 const char *target_strerror(int err)
576 {
577 if (err == QEMU_ERESTARTSYS) {
578 return "To be restarted";
579 }
580 if (err == QEMU_ESIGRETURN) {
581 return "Successful exit from sigreturn";
582 }
583
584 return strerror(target_to_host_errno(err));
585 }
586
587 static int check_zeroed_user(abi_long addr, size_t ksize, size_t usize)
588 {
589 int i;
590 uint8_t b;
591 if (usize <= ksize) {
592 return 1;
593 }
594 for (i = ksize; i < usize; i++) {
595 if (get_user_u8(b, addr + i)) {
596 return -TARGET_EFAULT;
597 }
598 if (b != 0) {
599 return 0;
600 }
601 }
602 return 1;
603 }
604
605 #define safe_syscall0(type, name) \
606 static type safe_##name(void) \
607 { \
608 return safe_syscall(__NR_##name); \
609 }
610
611 #define safe_syscall1(type, name, type1, arg1) \
612 static type safe_##name(type1 arg1) \
613 { \
614 return safe_syscall(__NR_##name, arg1); \
615 }
616
617 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
618 static type safe_##name(type1 arg1, type2 arg2) \
619 { \
620 return safe_syscall(__NR_##name, arg1, arg2); \
621 }
622
623 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
624 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
625 { \
626 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
627 }
628
629 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
630 type4, arg4) \
631 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
632 { \
633 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
634 }
635
636 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
637 type4, arg4, type5, arg5) \
638 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
639 type5 arg5) \
640 { \
641 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
642 }
643
644 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
645 type4, arg4, type5, arg5, type6, arg6) \
646 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
647 type5 arg5, type6 arg6) \
648 { \
649 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
650 }
651
652 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
653 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
654 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
655 int, flags, mode_t, mode)
656 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
657 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
658 struct rusage *, rusage)
659 #endif
660 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
661 int, options, struct rusage *, rusage)
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;
804 static abi_ulong brk_page;
805
806 void target_set_brk(abi_ulong new_brk)
807 {
808 target_brk = new_brk;
809 brk_page = HOST_PAGE_ALIGN(target_brk);
810 }
811
812 /* do_brk() must return target values and target errnos. */
813 abi_long do_brk(abi_ulong brk_val)
814 {
815 abi_long mapped_addr;
816 abi_ulong new_alloc_size;
817 abi_ulong new_brk, new_host_brk_page;
818
819 /* brk pointers are always untagged */
820
821 /* return old brk value if brk_val unchanged or zero */
822 if (!brk_val || brk_val == target_brk) {
823 return target_brk;
824 }
825
826 new_brk = TARGET_PAGE_ALIGN(brk_val);
827 new_host_brk_page = HOST_PAGE_ALIGN(brk_val);
828
829 /* brk_val and old target_brk might be on the same page */
830 if (new_brk == TARGET_PAGE_ALIGN(target_brk)) {
831 if (brk_val > target_brk) {
832 /* empty remaining bytes in (possibly larger) host page */
833 memset(g2h_untagged(target_brk), 0, new_host_brk_page - target_brk);
834 }
835 target_brk = brk_val;
836 return target_brk;
837 }
838
839 /* Release heap if necesary */
840 if (new_brk < target_brk) {
841 /* empty remaining bytes in (possibly larger) host page */
842 memset(g2h_untagged(brk_val), 0, new_host_brk_page - brk_val);
843
844 /* free unused host pages and set new brk_page */
845 target_munmap(new_host_brk_page, brk_page - new_host_brk_page);
846 brk_page = new_host_brk_page;
847
848 target_brk = brk_val;
849 return target_brk;
850 }
851
852 /* We need to allocate more memory after the brk... Note that
853 * we don't use MAP_FIXED because that will map over the top of
854 * any existing mapping (like the one with the host libc or qemu
855 * itself); instead we treat "mapped but at wrong address" as
856 * a failure and unmap again.
857 */
858 new_alloc_size = new_host_brk_page - brk_page;
859 if (new_alloc_size) {
860 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
861 PROT_READ|PROT_WRITE,
862 MAP_ANON|MAP_PRIVATE, 0, 0));
863 } else {
864 mapped_addr = brk_page;
865 }
866
867 if (mapped_addr == brk_page) {
868 /* Heap contents are initialized to zero, as for anonymous
869 * mapped pages. Technically the new pages are already
870 * initialized to zero since they *are* anonymous mapped
871 * pages, however we have to take care with the contents that
872 * come from the remaining part of the previous page: it may
873 * contains garbage data due to a previous heap usage (grown
874 * then shrunken). */
875 memset(g2h_untagged(target_brk), 0, brk_page - target_brk);
876
877 target_brk = brk_val;
878 brk_page = new_host_brk_page;
879 return target_brk;
880 } else if (mapped_addr != -1) {
881 /* Mapped but at wrong address, meaning there wasn't actually
882 * enough space for this brk.
883 */
884 target_munmap(mapped_addr, new_alloc_size);
885 mapped_addr = -1;
886 }
887
888 #if defined(TARGET_ALPHA)
889 /* We (partially) emulate OSF/1 on Alpha, which requires we
890 return a proper errno, not an unchanged brk value. */
891 return -TARGET_ENOMEM;
892 #endif
893 /* For everything else, return the previous break. */
894 return target_brk;
895 }
896
897 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
898 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
899 static inline abi_long copy_from_user_fdset(fd_set *fds,
900 abi_ulong target_fds_addr,
901 int n)
902 {
903 int i, nw, j, k;
904 abi_ulong b, *target_fds;
905
906 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
907 if (!(target_fds = lock_user(VERIFY_READ,
908 target_fds_addr,
909 sizeof(abi_ulong) * nw,
910 1)))
911 return -TARGET_EFAULT;
912
913 FD_ZERO(fds);
914 k = 0;
915 for (i = 0; i < nw; i++) {
916 /* grab the abi_ulong */
917 __get_user(b, &target_fds[i]);
918 for (j = 0; j < TARGET_ABI_BITS; j++) {
919 /* check the bit inside the abi_ulong */
920 if ((b >> j) & 1)
921 FD_SET(k, fds);
922 k++;
923 }
924 }
925
926 unlock_user(target_fds, target_fds_addr, 0);
927
928 return 0;
929 }
930
931 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
932 abi_ulong target_fds_addr,
933 int n)
934 {
935 if (target_fds_addr) {
936 if (copy_from_user_fdset(fds, target_fds_addr, n))
937 return -TARGET_EFAULT;
938 *fds_ptr = fds;
939 } else {
940 *fds_ptr = NULL;
941 }
942 return 0;
943 }
944
945 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
946 const fd_set *fds,
947 int n)
948 {
949 int i, nw, j, k;
950 abi_long v;
951 abi_ulong *target_fds;
952
953 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
954 if (!(target_fds = lock_user(VERIFY_WRITE,
955 target_fds_addr,
956 sizeof(abi_ulong) * nw,
957 0)))
958 return -TARGET_EFAULT;
959
960 k = 0;
961 for (i = 0; i < nw; i++) {
962 v = 0;
963 for (j = 0; j < TARGET_ABI_BITS; j++) {
964 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
965 k++;
966 }
967 __put_user(v, &target_fds[i]);
968 }
969
970 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
971
972 return 0;
973 }
974 #endif
975
976 #if defined(__alpha__)
977 #define HOST_HZ 1024
978 #else
979 #define HOST_HZ 100
980 #endif
981
982 static inline abi_long host_to_target_clock_t(long ticks)
983 {
984 #if HOST_HZ == TARGET_HZ
985 return ticks;
986 #else
987 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
988 #endif
989 }
990
991 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
992 const struct rusage *rusage)
993 {
994 struct target_rusage *target_rusage;
995
996 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
997 return -TARGET_EFAULT;
998 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
999 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1000 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1001 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1002 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1003 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1004 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1005 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1006 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1007 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1008 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1009 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1010 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1011 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1012 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1013 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1014 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1015 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1016 unlock_user_struct(target_rusage, target_addr, 1);
1017
1018 return 0;
1019 }
1020
1021 #ifdef TARGET_NR_setrlimit
1022 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1023 {
1024 abi_ulong target_rlim_swap;
1025 rlim_t result;
1026
1027 target_rlim_swap = tswapal(target_rlim);
1028 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1029 return RLIM_INFINITY;
1030
1031 result = target_rlim_swap;
1032 if (target_rlim_swap != (rlim_t)result)
1033 return RLIM_INFINITY;
1034
1035 return result;
1036 }
1037 #endif
1038
1039 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
1040 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1041 {
1042 abi_ulong target_rlim_swap;
1043 abi_ulong result;
1044
1045 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1046 target_rlim_swap = TARGET_RLIM_INFINITY;
1047 else
1048 target_rlim_swap = rlim;
1049 result = tswapal(target_rlim_swap);
1050
1051 return result;
1052 }
1053 #endif
1054
1055 static inline int target_to_host_resource(int code)
1056 {
1057 switch (code) {
1058 case TARGET_RLIMIT_AS:
1059 return RLIMIT_AS;
1060 case TARGET_RLIMIT_CORE:
1061 return RLIMIT_CORE;
1062 case TARGET_RLIMIT_CPU:
1063 return RLIMIT_CPU;
1064 case TARGET_RLIMIT_DATA:
1065 return RLIMIT_DATA;
1066 case TARGET_RLIMIT_FSIZE:
1067 return RLIMIT_FSIZE;
1068 case TARGET_RLIMIT_LOCKS:
1069 return RLIMIT_LOCKS;
1070 case TARGET_RLIMIT_MEMLOCK:
1071 return RLIMIT_MEMLOCK;
1072 case TARGET_RLIMIT_MSGQUEUE:
1073 return RLIMIT_MSGQUEUE;
1074 case TARGET_RLIMIT_NICE:
1075 return RLIMIT_NICE;
1076 case TARGET_RLIMIT_NOFILE:
1077 return RLIMIT_NOFILE;
1078 case TARGET_RLIMIT_NPROC:
1079 return RLIMIT_NPROC;
1080 case TARGET_RLIMIT_RSS:
1081 return RLIMIT_RSS;
1082 case TARGET_RLIMIT_RTPRIO:
1083 return RLIMIT_RTPRIO;
1084 #ifdef RLIMIT_RTTIME
1085 case TARGET_RLIMIT_RTTIME:
1086 return RLIMIT_RTTIME;
1087 #endif
1088 case TARGET_RLIMIT_SIGPENDING:
1089 return RLIMIT_SIGPENDING;
1090 case TARGET_RLIMIT_STACK:
1091 return RLIMIT_STACK;
1092 default:
1093 return code;
1094 }
1095 }
1096
1097 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1098 abi_ulong target_tv_addr)
1099 {
1100 struct target_timeval *target_tv;
1101
1102 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1103 return -TARGET_EFAULT;
1104 }
1105
1106 __get_user(tv->tv_sec, &target_tv->tv_sec);
1107 __get_user(tv->tv_usec, &target_tv->tv_usec);
1108
1109 unlock_user_struct(target_tv, target_tv_addr, 0);
1110
1111 return 0;
1112 }
1113
1114 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1115 const struct timeval *tv)
1116 {
1117 struct target_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_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
1132 static inline abi_long copy_from_user_timeval64(struct timeval *tv,
1133 abi_ulong target_tv_addr)
1134 {
1135 struct target__kernel_sock_timeval *target_tv;
1136
1137 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1138 return -TARGET_EFAULT;
1139 }
1140
1141 __get_user(tv->tv_sec, &target_tv->tv_sec);
1142 __get_user(tv->tv_usec, &target_tv->tv_usec);
1143
1144 unlock_user_struct(target_tv, target_tv_addr, 0);
1145
1146 return 0;
1147 }
1148 #endif
1149
1150 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1151 const struct timeval *tv)
1152 {
1153 struct target__kernel_sock_timeval *target_tv;
1154
1155 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1156 return -TARGET_EFAULT;
1157 }
1158
1159 __put_user(tv->tv_sec, &target_tv->tv_sec);
1160 __put_user(tv->tv_usec, &target_tv->tv_usec);
1161
1162 unlock_user_struct(target_tv, target_tv_addr, 1);
1163
1164 return 0;
1165 }
1166
1167 #if defined(TARGET_NR_futex) || \
1168 defined(TARGET_NR_rt_sigtimedwait) || \
1169 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
1170 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
1171 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
1172 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \
1173 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \
1174 defined(TARGET_NR_timer_settime) || \
1175 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
1176 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1177 abi_ulong target_addr)
1178 {
1179 struct target_timespec *target_ts;
1180
1181 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1182 return -TARGET_EFAULT;
1183 }
1184 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1185 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1186 unlock_user_struct(target_ts, target_addr, 0);
1187 return 0;
1188 }
1189 #endif
1190
1191 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \
1192 defined(TARGET_NR_timer_settime64) || \
1193 defined(TARGET_NR_mq_timedsend_time64) || \
1194 defined(TARGET_NR_mq_timedreceive_time64) || \
1195 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \
1196 defined(TARGET_NR_clock_nanosleep_time64) || \
1197 defined(TARGET_NR_rt_sigtimedwait_time64) || \
1198 defined(TARGET_NR_utimensat) || \
1199 defined(TARGET_NR_utimensat_time64) || \
1200 defined(TARGET_NR_semtimedop_time64) || \
1201 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64)
1202 static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
1203 abi_ulong target_addr)
1204 {
1205 struct target__kernel_timespec *target_ts;
1206
1207 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1208 return -TARGET_EFAULT;
1209 }
1210 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1211 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1212 /* in 32bit mode, this drops the padding */
1213 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec;
1214 unlock_user_struct(target_ts, target_addr, 0);
1215 return 0;
1216 }
1217 #endif
1218
1219 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1220 struct timespec *host_ts)
1221 {
1222 struct target_timespec *target_ts;
1223
1224 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1225 return -TARGET_EFAULT;
1226 }
1227 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1228 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1229 unlock_user_struct(target_ts, target_addr, 1);
1230 return 0;
1231 }
1232
1233 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1234 struct timespec *host_ts)
1235 {
1236 struct target__kernel_timespec *target_ts;
1237
1238 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1239 return -TARGET_EFAULT;
1240 }
1241 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1242 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1243 unlock_user_struct(target_ts, target_addr, 1);
1244 return 0;
1245 }
1246
1247 #if defined(TARGET_NR_gettimeofday)
1248 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
1249 struct timezone *tz)
1250 {
1251 struct target_timezone *target_tz;
1252
1253 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
1254 return -TARGET_EFAULT;
1255 }
1256
1257 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1258 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1259
1260 unlock_user_struct(target_tz, target_tz_addr, 1);
1261
1262 return 0;
1263 }
1264 #endif
1265
1266 #if defined(TARGET_NR_settimeofday)
1267 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1268 abi_ulong target_tz_addr)
1269 {
1270 struct target_timezone *target_tz;
1271
1272 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1273 return -TARGET_EFAULT;
1274 }
1275
1276 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1277 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1278
1279 unlock_user_struct(target_tz, target_tz_addr, 0);
1280
1281 return 0;
1282 }
1283 #endif
1284
1285 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1286 #include <mqueue.h>
1287
1288 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1289 abi_ulong target_mq_attr_addr)
1290 {
1291 struct target_mq_attr *target_mq_attr;
1292
1293 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1294 target_mq_attr_addr, 1))
1295 return -TARGET_EFAULT;
1296
1297 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1298 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1299 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1300 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1301
1302 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1303
1304 return 0;
1305 }
1306
1307 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1308 const struct mq_attr *attr)
1309 {
1310 struct target_mq_attr *target_mq_attr;
1311
1312 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1313 target_mq_attr_addr, 0))
1314 return -TARGET_EFAULT;
1315
1316 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1317 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1318 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1319 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1320
1321 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1322
1323 return 0;
1324 }
1325 #endif
1326
1327 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1328 /* do_select() must return target values and target errnos. */
1329 static abi_long do_select(int n,
1330 abi_ulong rfd_addr, abi_ulong wfd_addr,
1331 abi_ulong efd_addr, abi_ulong target_tv_addr)
1332 {
1333 fd_set rfds, wfds, efds;
1334 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1335 struct timeval tv;
1336 struct timespec ts, *ts_ptr;
1337 abi_long ret;
1338
1339 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1340 if (ret) {
1341 return ret;
1342 }
1343 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1344 if (ret) {
1345 return ret;
1346 }
1347 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1348 if (ret) {
1349 return ret;
1350 }
1351
1352 if (target_tv_addr) {
1353 if (copy_from_user_timeval(&tv, target_tv_addr))
1354 return -TARGET_EFAULT;
1355 ts.tv_sec = tv.tv_sec;
1356 ts.tv_nsec = tv.tv_usec * 1000;
1357 ts_ptr = &ts;
1358 } else {
1359 ts_ptr = NULL;
1360 }
1361
1362 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1363 ts_ptr, NULL));
1364
1365 if (!is_error(ret)) {
1366 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1367 return -TARGET_EFAULT;
1368 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1369 return -TARGET_EFAULT;
1370 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1371 return -TARGET_EFAULT;
1372
1373 if (target_tv_addr) {
1374 tv.tv_sec = ts.tv_sec;
1375 tv.tv_usec = ts.tv_nsec / 1000;
1376 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1377 return -TARGET_EFAULT;
1378 }
1379 }
1380 }
1381
1382 return ret;
1383 }
1384
1385 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1386 static abi_long do_old_select(abi_ulong arg1)
1387 {
1388 struct target_sel_arg_struct *sel;
1389 abi_ulong inp, outp, exp, tvp;
1390 long nsel;
1391
1392 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1393 return -TARGET_EFAULT;
1394 }
1395
1396 nsel = tswapal(sel->n);
1397 inp = tswapal(sel->inp);
1398 outp = tswapal(sel->outp);
1399 exp = tswapal(sel->exp);
1400 tvp = tswapal(sel->tvp);
1401
1402 unlock_user_struct(sel, arg1, 0);
1403
1404 return do_select(nsel, inp, outp, exp, tvp);
1405 }
1406 #endif
1407 #endif
1408
1409 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
1410 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3,
1411 abi_long arg4, abi_long arg5, abi_long arg6,
1412 bool time64)
1413 {
1414 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
1415 fd_set rfds, wfds, efds;
1416 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1417 struct timespec ts, *ts_ptr;
1418 abi_long ret;
1419
1420 /*
1421 * The 6th arg is actually two args smashed together,
1422 * so we cannot use the C library.
1423 */
1424 struct {
1425 sigset_t *set;
1426 size_t size;
1427 } sig, *sig_ptr;
1428
1429 abi_ulong arg_sigset, arg_sigsize, *arg7;
1430
1431 n = arg1;
1432 rfd_addr = arg2;
1433 wfd_addr = arg3;
1434 efd_addr = arg4;
1435 ts_addr = arg5;
1436
1437 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1438 if (ret) {
1439 return ret;
1440 }
1441 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1442 if (ret) {
1443 return ret;
1444 }
1445 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1446 if (ret) {
1447 return ret;
1448 }
1449
1450 /*
1451 * This takes a timespec, and not a timeval, so we cannot
1452 * use the do_select() helper ...
1453 */
1454 if (ts_addr) {
1455 if (time64) {
1456 if (target_to_host_timespec64(&ts, ts_addr)) {
1457 return -TARGET_EFAULT;
1458 }
1459 } else {
1460 if (target_to_host_timespec(&ts, ts_addr)) {
1461 return -TARGET_EFAULT;
1462 }
1463 }
1464 ts_ptr = &ts;
1465 } else {
1466 ts_ptr = NULL;
1467 }
1468
1469 /* Extract the two packed args for the sigset */
1470 sig_ptr = NULL;
1471 if (arg6) {
1472 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
1473 if (!arg7) {
1474 return -TARGET_EFAULT;
1475 }
1476 arg_sigset = tswapal(arg7[0]);
1477 arg_sigsize = tswapal(arg7[1]);
1478 unlock_user(arg7, arg6, 0);
1479
1480 if (arg_sigset) {
1481 ret = process_sigsuspend_mask(&sig.set, arg_sigset, arg_sigsize);
1482 if (ret != 0) {
1483 return ret;
1484 }
1485 sig_ptr = &sig;
1486 sig.size = SIGSET_T_SIZE;
1487 }
1488 }
1489
1490 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1491 ts_ptr, sig_ptr));
1492
1493 if (sig_ptr) {
1494 finish_sigsuspend_mask(ret);
1495 }
1496
1497 if (!is_error(ret)) {
1498 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) {
1499 return -TARGET_EFAULT;
1500 }
1501 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) {
1502 return -TARGET_EFAULT;
1503 }
1504 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) {
1505 return -TARGET_EFAULT;
1506 }
1507 if (time64) {
1508 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) {
1509 return -TARGET_EFAULT;
1510 }
1511 } else {
1512 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) {
1513 return -TARGET_EFAULT;
1514 }
1515 }
1516 }
1517 return ret;
1518 }
1519 #endif
1520
1521 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \
1522 defined(TARGET_NR_ppoll_time64)
1523 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3,
1524 abi_long arg4, abi_long arg5, bool ppoll, bool time64)
1525 {
1526 struct target_pollfd *target_pfd;
1527 unsigned int nfds = arg2;
1528 struct pollfd *pfd;
1529 unsigned int i;
1530 abi_long ret;
1531
1532 pfd = NULL;
1533 target_pfd = NULL;
1534 if (nfds) {
1535 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
1536 return -TARGET_EINVAL;
1537 }
1538 target_pfd = lock_user(VERIFY_WRITE, arg1,
1539 sizeof(struct target_pollfd) * nfds, 1);
1540 if (!target_pfd) {
1541 return -TARGET_EFAULT;
1542 }
1543
1544 pfd = alloca(sizeof(struct pollfd) * nfds);
1545 for (i = 0; i < nfds; i++) {
1546 pfd[i].fd = tswap32(target_pfd[i].fd);
1547 pfd[i].events = tswap16(target_pfd[i].events);
1548 }
1549 }
1550 if (ppoll) {
1551 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
1552 sigset_t *set = NULL;
1553
1554 if (arg3) {
1555 if (time64) {
1556 if (target_to_host_timespec64(timeout_ts, arg3)) {
1557 unlock_user(target_pfd, arg1, 0);
1558 return -TARGET_EFAULT;
1559 }
1560 } else {
1561 if (target_to_host_timespec(timeout_ts, arg3)) {
1562 unlock_user(target_pfd, arg1, 0);
1563 return -TARGET_EFAULT;
1564 }
1565 }
1566 } else {
1567 timeout_ts = NULL;
1568 }
1569
1570 if (arg4) {
1571 ret = process_sigsuspend_mask(&set, arg4, arg5);
1572 if (ret != 0) {
1573 unlock_user(target_pfd, arg1, 0);
1574 return ret;
1575 }
1576 }
1577
1578 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
1579 set, SIGSET_T_SIZE));
1580
1581 if (set) {
1582 finish_sigsuspend_mask(ret);
1583 }
1584 if (!is_error(ret) && arg3) {
1585 if (time64) {
1586 if (host_to_target_timespec64(arg3, timeout_ts)) {
1587 return -TARGET_EFAULT;
1588 }
1589 } else {
1590 if (host_to_target_timespec(arg3, timeout_ts)) {
1591 return -TARGET_EFAULT;
1592 }
1593 }
1594 }
1595 } else {
1596 struct timespec ts, *pts;
1597
1598 if (arg3 >= 0) {
1599 /* Convert ms to secs, ns */
1600 ts.tv_sec = arg3 / 1000;
1601 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
1602 pts = &ts;
1603 } else {
1604 /* -ve poll() timeout means "infinite" */
1605 pts = NULL;
1606 }
1607 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
1608 }
1609
1610 if (!is_error(ret)) {
1611 for (i = 0; i < nfds; i++) {
1612 target_pfd[i].revents = tswap16(pfd[i].revents);
1613 }
1614 }
1615 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
1616 return ret;
1617 }
1618 #endif
1619
1620 static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes,
1621 int flags, int is_pipe2)
1622 {
1623 int host_pipe[2];
1624 abi_long ret;
1625 ret = pipe2(host_pipe, flags);
1626
1627 if (is_error(ret))
1628 return get_errno(ret);
1629
1630 /* Several targets have special calling conventions for the original
1631 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1632 if (!is_pipe2) {
1633 #if defined(TARGET_ALPHA)
1634 cpu_env->ir[IR_A4] = host_pipe[1];
1635 return host_pipe[0];
1636 #elif defined(TARGET_MIPS)
1637 cpu_env->active_tc.gpr[3] = host_pipe[1];
1638 return host_pipe[0];
1639 #elif defined(TARGET_SH4)
1640 cpu_env->gregs[1] = host_pipe[1];
1641 return host_pipe[0];
1642 #elif defined(TARGET_SPARC)
1643 cpu_env->regwptr[1] = host_pipe[1];
1644 return host_pipe[0];
1645 #endif
1646 }
1647
1648 if (put_user_s32(host_pipe[0], pipedes)
1649 || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int)))
1650 return -TARGET_EFAULT;
1651 return get_errno(ret);
1652 }
1653
1654 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1655 abi_ulong target_addr,
1656 socklen_t len)
1657 {
1658 struct target_ip_mreqn *target_smreqn;
1659
1660 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1661 if (!target_smreqn)
1662 return -TARGET_EFAULT;
1663 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1664 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1665 if (len == sizeof(struct target_ip_mreqn))
1666 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1667 unlock_user(target_smreqn, target_addr, 0);
1668
1669 return 0;
1670 }
1671
1672 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1673 abi_ulong target_addr,
1674 socklen_t len)
1675 {
1676 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1677 sa_family_t sa_family;
1678 struct target_sockaddr *target_saddr;
1679
1680 if (fd_trans_target_to_host_addr(fd)) {
1681 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1682 }
1683
1684 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1685 if (!target_saddr)
1686 return -TARGET_EFAULT;
1687
1688 sa_family = tswap16(target_saddr->sa_family);
1689
1690 /* Oops. The caller might send a incomplete sun_path; sun_path
1691 * must be terminated by \0 (see the manual page), but
1692 * unfortunately it is quite common to specify sockaddr_un
1693 * length as "strlen(x->sun_path)" while it should be
1694 * "strlen(...) + 1". We'll fix that here if needed.
1695 * Linux kernel has a similar feature.
1696 */
1697
1698 if (sa_family == AF_UNIX) {
1699 if (len < unix_maxlen && len > 0) {
1700 char *cp = (char*)target_saddr;
1701
1702 if ( cp[len-1] && !cp[len] )
1703 len++;
1704 }
1705 if (len > unix_maxlen)
1706 len = unix_maxlen;
1707 }
1708
1709 memcpy(addr, target_saddr, len);
1710 addr->sa_family = sa_family;
1711 if (sa_family == AF_NETLINK) {
1712 struct sockaddr_nl *nladdr;
1713
1714 nladdr = (struct sockaddr_nl *)addr;
1715 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1716 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1717 } else if (sa_family == AF_PACKET) {
1718 struct target_sockaddr_ll *lladdr;
1719
1720 lladdr = (struct target_sockaddr_ll *)addr;
1721 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1722 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1723 } else if (sa_family == AF_INET6) {
1724 struct sockaddr_in6 *in6addr;
1725
1726 in6addr = (struct sockaddr_in6 *)addr;
1727 in6addr->sin6_scope_id = tswap32(in6addr->sin6_scope_id);
1728 }
1729 unlock_user(target_saddr, target_addr, 0);
1730
1731 return 0;
1732 }
1733
1734 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1735 struct sockaddr *addr,
1736 socklen_t len)
1737 {
1738 struct target_sockaddr *target_saddr;
1739
1740 if (len == 0) {
1741 return 0;
1742 }
1743 assert(addr);
1744
1745 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1746 if (!target_saddr)
1747 return -TARGET_EFAULT;
1748 memcpy(target_saddr, addr, len);
1749 if (len >= offsetof(struct target_sockaddr, sa_family) +
1750 sizeof(target_saddr->sa_family)) {
1751 target_saddr->sa_family = tswap16(addr->sa_family);
1752 }
1753 if (addr->sa_family == AF_NETLINK &&
1754 len >= sizeof(struct target_sockaddr_nl)) {
1755 struct target_sockaddr_nl *target_nl =
1756 (struct target_sockaddr_nl *)target_saddr;
1757 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1758 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1759 } else if (addr->sa_family == AF_PACKET) {
1760 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1761 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1762 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1763 } else if (addr->sa_family == AF_INET6 &&
1764 len >= sizeof(struct target_sockaddr_in6)) {
1765 struct target_sockaddr_in6 *target_in6 =
1766 (struct target_sockaddr_in6 *)target_saddr;
1767 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1768 }
1769 unlock_user(target_saddr, target_addr, len);
1770
1771 return 0;
1772 }
1773
1774 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1775 struct target_msghdr *target_msgh)
1776 {
1777 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1778 abi_long msg_controllen;
1779 abi_ulong target_cmsg_addr;
1780 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1781 socklen_t space = 0;
1782
1783 msg_controllen = tswapal(target_msgh->msg_controllen);
1784 if (msg_controllen < sizeof (struct target_cmsghdr))
1785 goto the_end;
1786 target_cmsg_addr = tswapal(target_msgh->msg_control);
1787 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1788 target_cmsg_start = target_cmsg;
1789 if (!target_cmsg)
1790 return -TARGET_EFAULT;
1791
1792 while (cmsg && target_cmsg) {
1793 void *data = CMSG_DATA(cmsg);
1794 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1795
1796 int len = tswapal(target_cmsg->cmsg_len)
1797 - sizeof(struct target_cmsghdr);
1798
1799 space += CMSG_SPACE(len);
1800 if (space > msgh->msg_controllen) {
1801 space -= CMSG_SPACE(len);
1802 /* This is a QEMU bug, since we allocated the payload
1803 * area ourselves (unlike overflow in host-to-target
1804 * conversion, which is just the guest giving us a buffer
1805 * that's too small). It can't happen for the payload types
1806 * we currently support; if it becomes an issue in future
1807 * we would need to improve our allocation strategy to
1808 * something more intelligent than "twice the size of the
1809 * target buffer we're reading from".
1810 */
1811 qemu_log_mask(LOG_UNIMP,
1812 ("Unsupported ancillary data %d/%d: "
1813 "unhandled msg size\n"),
1814 tswap32(target_cmsg->cmsg_level),
1815 tswap32(target_cmsg->cmsg_type));
1816 break;
1817 }
1818
1819 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1820 cmsg->cmsg_level = SOL_SOCKET;
1821 } else {
1822 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1823 }
1824 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1825 cmsg->cmsg_len = CMSG_LEN(len);
1826
1827 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1828 int *fd = (int *)data;
1829 int *target_fd = (int *)target_data;
1830 int i, numfds = len / sizeof(int);
1831
1832 for (i = 0; i < numfds; i++) {
1833 __get_user(fd[i], target_fd + i);
1834 }
1835 } else if (cmsg->cmsg_level == SOL_SOCKET
1836 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1837 struct ucred *cred = (struct ucred *)data;
1838 struct target_ucred *target_cred =
1839 (struct target_ucred *)target_data;
1840
1841 __get_user(cred->pid, &target_cred->pid);
1842 __get_user(cred->uid, &target_cred->uid);
1843 __get_user(cred->gid, &target_cred->gid);
1844 } else if (cmsg->cmsg_level == SOL_ALG) {
1845 uint32_t *dst = (uint32_t *)data;
1846
1847 memcpy(dst, target_data, len);
1848 /* fix endianess of first 32-bit word */
1849 if (len >= sizeof(uint32_t)) {
1850 *dst = tswap32(*dst);
1851 }
1852 } else {
1853 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1854 cmsg->cmsg_level, cmsg->cmsg_type);
1855 memcpy(data, target_data, len);
1856 }
1857
1858 cmsg = CMSG_NXTHDR(msgh, cmsg);
1859 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1860 target_cmsg_start);
1861 }
1862 unlock_user(target_cmsg, target_cmsg_addr, 0);
1863 the_end:
1864 msgh->msg_controllen = space;
1865 return 0;
1866 }
1867
1868 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1869 struct msghdr *msgh)
1870 {
1871 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1872 abi_long msg_controllen;
1873 abi_ulong target_cmsg_addr;
1874 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1875 socklen_t space = 0;
1876
1877 msg_controllen = tswapal(target_msgh->msg_controllen);
1878 if (msg_controllen < sizeof (struct target_cmsghdr))
1879 goto the_end;
1880 target_cmsg_addr = tswapal(target_msgh->msg_control);
1881 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1882 target_cmsg_start = target_cmsg;
1883 if (!target_cmsg)
1884 return -TARGET_EFAULT;
1885
1886 while (cmsg && target_cmsg) {
1887 void *data = CMSG_DATA(cmsg);
1888 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1889
1890 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1891 int tgt_len, tgt_space;
1892
1893 /* We never copy a half-header but may copy half-data;
1894 * this is Linux's behaviour in put_cmsg(). Note that
1895 * truncation here is a guest problem (which we report
1896 * to the guest via the CTRUNC bit), unlike truncation
1897 * in target_to_host_cmsg, which is a QEMU bug.
1898 */
1899 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1900 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1901 break;
1902 }
1903
1904 if (cmsg->cmsg_level == SOL_SOCKET) {
1905 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1906 } else {
1907 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1908 }
1909 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1910
1911 /* Payload types which need a different size of payload on
1912 * the target must adjust tgt_len here.
1913 */
1914 tgt_len = len;
1915 switch (cmsg->cmsg_level) {
1916 case SOL_SOCKET:
1917 switch (cmsg->cmsg_type) {
1918 case SO_TIMESTAMP:
1919 tgt_len = sizeof(struct target_timeval);
1920 break;
1921 default:
1922 break;
1923 }
1924 break;
1925 default:
1926 break;
1927 }
1928
1929 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1930 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1931 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1932 }
1933
1934 /* We must now copy-and-convert len bytes of payload
1935 * into tgt_len bytes of destination space. Bear in mind
1936 * that in both source and destination we may be dealing
1937 * with a truncated value!
1938 */
1939 switch (cmsg->cmsg_level) {
1940 case SOL_SOCKET:
1941 switch (cmsg->cmsg_type) {
1942 case SCM_RIGHTS:
1943 {
1944 int *fd = (int *)data;
1945 int *target_fd = (int *)target_data;
1946 int i, numfds = tgt_len / sizeof(int);
1947
1948 for (i = 0; i < numfds; i++) {
1949 __put_user(fd[i], target_fd + i);
1950 }
1951 break;
1952 }
1953 case SO_TIMESTAMP:
1954 {
1955 struct timeval *tv = (struct timeval *)data;
1956 struct target_timeval *target_tv =
1957 (struct target_timeval *)target_data;
1958
1959 if (len != sizeof(struct timeval) ||
1960 tgt_len != sizeof(struct target_timeval)) {
1961 goto unimplemented;
1962 }
1963
1964 /* copy struct timeval to target */
1965 __put_user(tv->tv_sec, &target_tv->tv_sec);
1966 __put_user(tv->tv_usec, &target_tv->tv_usec);
1967 break;
1968 }
1969 case SCM_CREDENTIALS:
1970 {
1971 struct ucred *cred = (struct ucred *)data;
1972 struct target_ucred *target_cred =
1973 (struct target_ucred *)target_data;
1974
1975 __put_user(cred->pid, &target_cred->pid);
1976 __put_user(cred->uid, &target_cred->uid);
1977 __put_user(cred->gid, &target_cred->gid);
1978 break;
1979 }
1980 default:
1981 goto unimplemented;
1982 }
1983 break;
1984
1985 case SOL_IP:
1986 switch (cmsg->cmsg_type) {
1987 case IP_TTL:
1988 {
1989 uint32_t *v = (uint32_t *)data;
1990 uint32_t *t_int = (uint32_t *)target_data;
1991
1992 if (len != sizeof(uint32_t) ||
1993 tgt_len != sizeof(uint32_t)) {
1994 goto unimplemented;
1995 }
1996 __put_user(*v, t_int);
1997 break;
1998 }
1999 case IP_RECVERR:
2000 {
2001 struct errhdr_t {
2002 struct sock_extended_err ee;
2003 struct sockaddr_in offender;
2004 };
2005 struct errhdr_t *errh = (struct errhdr_t *)data;
2006 struct errhdr_t *target_errh =
2007 (struct errhdr_t *)target_data;
2008
2009 if (len != sizeof(struct errhdr_t) ||
2010 tgt_len != sizeof(struct errhdr_t)) {
2011 goto unimplemented;
2012 }
2013 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2014 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2015 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2016 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2017 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2018 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2019 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2020 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2021 (void *) &errh->offender, sizeof(errh->offender));
2022 break;
2023 }
2024 default:
2025 goto unimplemented;
2026 }
2027 break;
2028
2029 case SOL_IPV6:
2030 switch (cmsg->cmsg_type) {
2031 case IPV6_HOPLIMIT:
2032 {
2033 uint32_t *v = (uint32_t *)data;
2034 uint32_t *t_int = (uint32_t *)target_data;
2035
2036 if (len != sizeof(uint32_t) ||
2037 tgt_len != sizeof(uint32_t)) {
2038 goto unimplemented;
2039 }
2040 __put_user(*v, t_int);
2041 break;
2042 }
2043 case IPV6_RECVERR:
2044 {
2045 struct errhdr6_t {
2046 struct sock_extended_err ee;
2047 struct sockaddr_in6 offender;
2048 };
2049 struct errhdr6_t *errh = (struct errhdr6_t *)data;
2050 struct errhdr6_t *target_errh =
2051 (struct errhdr6_t *)target_data;
2052
2053 if (len != sizeof(struct errhdr6_t) ||
2054 tgt_len != sizeof(struct errhdr6_t)) {
2055 goto unimplemented;
2056 }
2057 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2058 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2059 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2060 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2061 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2062 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2063 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2064 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2065 (void *) &errh->offender, sizeof(errh->offender));
2066 break;
2067 }
2068 default:
2069 goto unimplemented;
2070 }
2071 break;
2072
2073 default:
2074 unimplemented:
2075 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
2076 cmsg->cmsg_level, cmsg->cmsg_type);
2077 memcpy(target_data, data, MIN(len, tgt_len));
2078 if (tgt_len > len) {
2079 memset(target_data + len, 0, tgt_len - len);
2080 }
2081 }
2082
2083 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
2084 tgt_space = TARGET_CMSG_SPACE(tgt_len);
2085 if (msg_controllen < tgt_space) {
2086 tgt_space = msg_controllen;
2087 }
2088 msg_controllen -= tgt_space;
2089 space += tgt_space;
2090 cmsg = CMSG_NXTHDR(msgh, cmsg);
2091 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
2092 target_cmsg_start);
2093 }
2094 unlock_user(target_cmsg, target_cmsg_addr, space);
2095 the_end:
2096 target_msgh->msg_controllen = tswapal(space);
2097 return 0;
2098 }
2099
2100 /* do_setsockopt() Must return target values and target errnos. */
2101 static abi_long do_setsockopt(int sockfd, int level, int optname,
2102 abi_ulong optval_addr, socklen_t optlen)
2103 {
2104 abi_long ret;
2105 int val;
2106 struct ip_mreqn *ip_mreq;
2107 struct ip_mreq_source *ip_mreq_source;
2108
2109 switch(level) {
2110 case SOL_TCP:
2111 case SOL_UDP:
2112 /* TCP and UDP options all take an 'int' value. */
2113 if (optlen < sizeof(uint32_t))
2114 return -TARGET_EINVAL;
2115
2116 if (get_user_u32(val, optval_addr))
2117 return -TARGET_EFAULT;
2118 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2119 break;
2120 case SOL_IP:
2121 switch(optname) {
2122 case IP_TOS:
2123 case IP_TTL:
2124 case IP_HDRINCL:
2125 case IP_ROUTER_ALERT:
2126 case IP_RECVOPTS:
2127 case IP_RETOPTS:
2128 case IP_PKTINFO:
2129 case IP_MTU_DISCOVER:
2130 case IP_RECVERR:
2131 case IP_RECVTTL:
2132 case IP_RECVTOS:
2133 #ifdef IP_FREEBIND
2134 case IP_FREEBIND:
2135 #endif
2136 case IP_MULTICAST_TTL:
2137 case IP_MULTICAST_LOOP:
2138 val = 0;
2139 if (optlen >= sizeof(uint32_t)) {
2140 if (get_user_u32(val, optval_addr))
2141 return -TARGET_EFAULT;
2142 } else if (optlen >= 1) {
2143 if (get_user_u8(val, optval_addr))
2144 return -TARGET_EFAULT;
2145 }
2146 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2147 break;
2148 case IP_ADD_MEMBERSHIP:
2149 case IP_DROP_MEMBERSHIP:
2150 if (optlen < sizeof (struct target_ip_mreq) ||
2151 optlen > sizeof (struct target_ip_mreqn))
2152 return -TARGET_EINVAL;
2153
2154 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2155 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2156 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2157 break;
2158
2159 case IP_BLOCK_SOURCE:
2160 case IP_UNBLOCK_SOURCE:
2161 case IP_ADD_SOURCE_MEMBERSHIP:
2162 case IP_DROP_SOURCE_MEMBERSHIP:
2163 if (optlen != sizeof (struct target_ip_mreq_source))
2164 return -TARGET_EINVAL;
2165
2166 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2167 if (!ip_mreq_source) {
2168 return -TARGET_EFAULT;
2169 }
2170 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2171 unlock_user (ip_mreq_source, optval_addr, 0);
2172 break;
2173
2174 default:
2175 goto unimplemented;
2176 }
2177 break;
2178 case SOL_IPV6:
2179 switch (optname) {
2180 case IPV6_MTU_DISCOVER:
2181 case IPV6_MTU:
2182 case IPV6_V6ONLY:
2183 case IPV6_RECVPKTINFO:
2184 case IPV6_UNICAST_HOPS:
2185 case IPV6_MULTICAST_HOPS:
2186 case IPV6_MULTICAST_LOOP:
2187 case IPV6_RECVERR:
2188 case IPV6_RECVHOPLIMIT:
2189 case IPV6_2292HOPLIMIT:
2190 case IPV6_CHECKSUM:
2191 case IPV6_ADDRFORM:
2192 case IPV6_2292PKTINFO:
2193 case IPV6_RECVTCLASS:
2194 case IPV6_RECVRTHDR:
2195 case IPV6_2292RTHDR:
2196 case IPV6_RECVHOPOPTS:
2197 case IPV6_2292HOPOPTS:
2198 case IPV6_RECVDSTOPTS:
2199 case IPV6_2292DSTOPTS:
2200 case IPV6_TCLASS:
2201 case IPV6_ADDR_PREFERENCES:
2202 #ifdef IPV6_RECVPATHMTU
2203 case IPV6_RECVPATHMTU:
2204 #endif
2205 #ifdef IPV6_TRANSPARENT
2206 case IPV6_TRANSPARENT:
2207 #endif
2208 #ifdef IPV6_FREEBIND
2209 case IPV6_FREEBIND:
2210 #endif
2211 #ifdef IPV6_RECVORIGDSTADDR
2212 case IPV6_RECVORIGDSTADDR:
2213 #endif
2214 val = 0;
2215 if (optlen < sizeof(uint32_t)) {
2216 return -TARGET_EINVAL;
2217 }
2218 if (get_user_u32(val, optval_addr)) {
2219 return -TARGET_EFAULT;
2220 }
2221 ret = get_errno(setsockopt(sockfd, level, optname,
2222 &val, sizeof(val)));
2223 break;
2224 case IPV6_PKTINFO:
2225 {
2226 struct in6_pktinfo pki;
2227
2228 if (optlen < sizeof(pki)) {
2229 return -TARGET_EINVAL;
2230 }
2231
2232 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2233 return -TARGET_EFAULT;
2234 }
2235
2236 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2237
2238 ret = get_errno(setsockopt(sockfd, level, optname,
2239 &pki, sizeof(pki)));
2240 break;
2241 }
2242 case IPV6_ADD_MEMBERSHIP:
2243 case IPV6_DROP_MEMBERSHIP:
2244 {
2245 struct ipv6_mreq ipv6mreq;
2246
2247 if (optlen < sizeof(ipv6mreq)) {
2248 return -TARGET_EINVAL;
2249 }
2250
2251 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
2252 return -TARGET_EFAULT;
2253 }
2254
2255 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
2256
2257 ret = get_errno(setsockopt(sockfd, level, optname,
2258 &ipv6mreq, sizeof(ipv6mreq)));
2259 break;
2260 }
2261 default:
2262 goto unimplemented;
2263 }
2264 break;
2265 case SOL_ICMPV6:
2266 switch (optname) {
2267 case ICMPV6_FILTER:
2268 {
2269 struct icmp6_filter icmp6f;
2270
2271 if (optlen > sizeof(icmp6f)) {
2272 optlen = sizeof(icmp6f);
2273 }
2274
2275 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2276 return -TARGET_EFAULT;
2277 }
2278
2279 for (val = 0; val < 8; val++) {
2280 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2281 }
2282
2283 ret = get_errno(setsockopt(sockfd, level, optname,
2284 &icmp6f, optlen));
2285 break;
2286 }
2287 default:
2288 goto unimplemented;
2289 }
2290 break;
2291 case SOL_RAW:
2292 switch (optname) {
2293 case ICMP_FILTER:
2294 case IPV6_CHECKSUM:
2295 /* those take an u32 value */
2296 if (optlen < sizeof(uint32_t)) {
2297 return -TARGET_EINVAL;
2298 }
2299
2300 if (get_user_u32(val, optval_addr)) {
2301 return -TARGET_EFAULT;
2302 }
2303 ret = get_errno(setsockopt(sockfd, level, optname,
2304 &val, sizeof(val)));
2305 break;
2306
2307 default:
2308 goto unimplemented;
2309 }
2310 break;
2311 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2312 case SOL_ALG:
2313 switch (optname) {
2314 case ALG_SET_KEY:
2315 {
2316 char *alg_key = g_malloc(optlen);
2317
2318 if (!alg_key) {
2319 return -TARGET_ENOMEM;
2320 }
2321 if (copy_from_user(alg_key, optval_addr, optlen)) {
2322 g_free(alg_key);
2323 return -TARGET_EFAULT;
2324 }
2325 ret = get_errno(setsockopt(sockfd, level, optname,
2326 alg_key, optlen));
2327 g_free(alg_key);
2328 break;
2329 }
2330 case ALG_SET_AEAD_AUTHSIZE:
2331 {
2332 ret = get_errno(setsockopt(sockfd, level, optname,
2333 NULL, optlen));
2334 break;
2335 }
2336 default:
2337 goto unimplemented;
2338 }
2339 break;
2340 #endif
2341 case TARGET_SOL_SOCKET:
2342 switch (optname) {
2343 case TARGET_SO_RCVTIMEO:
2344 {
2345 struct timeval tv;
2346
2347 optname = SO_RCVTIMEO;
2348
2349 set_timeout:
2350 if (optlen != sizeof(struct target_timeval)) {
2351 return -TARGET_EINVAL;
2352 }
2353
2354 if (copy_from_user_timeval(&tv, optval_addr)) {
2355 return -TARGET_EFAULT;
2356 }
2357
2358 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2359 &tv, sizeof(tv)));
2360 return ret;
2361 }
2362 case TARGET_SO_SNDTIMEO:
2363 optname = SO_SNDTIMEO;
2364 goto set_timeout;
2365 case TARGET_SO_ATTACH_FILTER:
2366 {
2367 struct target_sock_fprog *tfprog;
2368 struct target_sock_filter *tfilter;
2369 struct sock_fprog fprog;
2370 struct sock_filter *filter;
2371 int i;
2372
2373 if (optlen != sizeof(*tfprog)) {
2374 return -TARGET_EINVAL;
2375 }
2376 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2377 return -TARGET_EFAULT;
2378 }
2379 if (!lock_user_struct(VERIFY_READ, tfilter,
2380 tswapal(tfprog->filter), 0)) {
2381 unlock_user_struct(tfprog, optval_addr, 1);
2382 return -TARGET_EFAULT;
2383 }
2384
2385 fprog.len = tswap16(tfprog->len);
2386 filter = g_try_new(struct sock_filter, fprog.len);
2387 if (filter == NULL) {
2388 unlock_user_struct(tfilter, tfprog->filter, 1);
2389 unlock_user_struct(tfprog, optval_addr, 1);
2390 return -TARGET_ENOMEM;
2391 }
2392 for (i = 0; i < fprog.len; i++) {
2393 filter[i].code = tswap16(tfilter[i].code);
2394 filter[i].jt = tfilter[i].jt;
2395 filter[i].jf = tfilter[i].jf;
2396 filter[i].k = tswap32(tfilter[i].k);
2397 }
2398 fprog.filter = filter;
2399
2400 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2401 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2402 g_free(filter);
2403
2404 unlock_user_struct(tfilter, tfprog->filter, 1);
2405 unlock_user_struct(tfprog, optval_addr, 1);
2406 return ret;
2407 }
2408 case TARGET_SO_BINDTODEVICE:
2409 {
2410 char *dev_ifname, *addr_ifname;
2411
2412 if (optlen > IFNAMSIZ - 1) {
2413 optlen = IFNAMSIZ - 1;
2414 }
2415 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2416 if (!dev_ifname) {
2417 return -TARGET_EFAULT;
2418 }
2419 optname = SO_BINDTODEVICE;
2420 addr_ifname = alloca(IFNAMSIZ);
2421 memcpy(addr_ifname, dev_ifname, optlen);
2422 addr_ifname[optlen] = 0;
2423 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2424 addr_ifname, optlen));
2425 unlock_user (dev_ifname, optval_addr, 0);
2426 return ret;
2427 }
2428 case TARGET_SO_LINGER:
2429 {
2430 struct linger lg;
2431 struct target_linger *tlg;
2432
2433 if (optlen != sizeof(struct target_linger)) {
2434 return -TARGET_EINVAL;
2435 }
2436 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2437 return -TARGET_EFAULT;
2438 }
2439 __get_user(lg.l_onoff, &tlg->l_onoff);
2440 __get_user(lg.l_linger, &tlg->l_linger);
2441 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2442 &lg, sizeof(lg)));
2443 unlock_user_struct(tlg, optval_addr, 0);
2444 return ret;
2445 }
2446 /* Options with 'int' argument. */
2447 case TARGET_SO_DEBUG:
2448 optname = SO_DEBUG;
2449 break;
2450 case TARGET_SO_REUSEADDR:
2451 optname = SO_REUSEADDR;
2452 break;
2453 #ifdef SO_REUSEPORT
2454 case TARGET_SO_REUSEPORT:
2455 optname = SO_REUSEPORT;
2456 break;
2457 #endif
2458 case TARGET_SO_TYPE:
2459 optname = SO_TYPE;
2460 break;
2461 case TARGET_SO_ERROR:
2462 optname = SO_ERROR;
2463 break;
2464 case TARGET_SO_DONTROUTE:
2465 optname = SO_DONTROUTE;
2466 break;
2467 case TARGET_SO_BROADCAST:
2468 optname = SO_BROADCAST;
2469 break;
2470 case TARGET_SO_SNDBUF:
2471 optname = SO_SNDBUF;
2472 break;
2473 case TARGET_SO_SNDBUFFORCE:
2474 optname = SO_SNDBUFFORCE;
2475 break;
2476 case TARGET_SO_RCVBUF:
2477 optname = SO_RCVBUF;
2478 break;
2479 case TARGET_SO_RCVBUFFORCE:
2480 optname = SO_RCVBUFFORCE;
2481 break;
2482 case TARGET_SO_KEEPALIVE:
2483 optname = SO_KEEPALIVE;
2484 break;
2485 case TARGET_SO_OOBINLINE:
2486 optname = SO_OOBINLINE;
2487 break;
2488 case TARGET_SO_NO_CHECK:
2489 optname = SO_NO_CHECK;
2490 break;
2491 case TARGET_SO_PRIORITY:
2492 optname = SO_PRIORITY;
2493 break;
2494 #ifdef SO_BSDCOMPAT
2495 case TARGET_SO_BSDCOMPAT:
2496 optname = SO_BSDCOMPAT;
2497 break;
2498 #endif
2499 case TARGET_SO_PASSCRED:
2500 optname = SO_PASSCRED;
2501 break;
2502 case TARGET_SO_PASSSEC:
2503 optname = SO_PASSSEC;
2504 break;
2505 case TARGET_SO_TIMESTAMP:
2506 optname = SO_TIMESTAMP;
2507 break;
2508 case TARGET_SO_RCVLOWAT:
2509 optname = SO_RCVLOWAT;
2510 break;
2511 default:
2512 goto unimplemented;
2513 }
2514 if (optlen < sizeof(uint32_t))
2515 return -TARGET_EINVAL;
2516
2517 if (get_user_u32(val, optval_addr))
2518 return -TARGET_EFAULT;
2519 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2520 break;
2521 #ifdef SOL_NETLINK
2522 case SOL_NETLINK:
2523 switch (optname) {
2524 case NETLINK_PKTINFO:
2525 case NETLINK_ADD_MEMBERSHIP:
2526 case NETLINK_DROP_MEMBERSHIP:
2527 case NETLINK_BROADCAST_ERROR:
2528 case NETLINK_NO_ENOBUFS:
2529 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2530 case NETLINK_LISTEN_ALL_NSID:
2531 case NETLINK_CAP_ACK:
2532 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2533 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2534 case NETLINK_EXT_ACK:
2535 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2536 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2537 case NETLINK_GET_STRICT_CHK:
2538 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2539 break;
2540 default:
2541 goto unimplemented;
2542 }
2543 val = 0;
2544 if (optlen < sizeof(uint32_t)) {
2545 return -TARGET_EINVAL;
2546 }
2547 if (get_user_u32(val, optval_addr)) {
2548 return -TARGET_EFAULT;
2549 }
2550 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
2551 sizeof(val)));
2552 break;
2553 #endif /* SOL_NETLINK */
2554 default:
2555 unimplemented:
2556 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
2557 level, optname);
2558 ret = -TARGET_ENOPROTOOPT;
2559 }
2560 return ret;
2561 }
2562
2563 /* do_getsockopt() Must return target values and target errnos. */
2564 static abi_long do_getsockopt(int sockfd, int level, int optname,
2565 abi_ulong optval_addr, abi_ulong optlen)
2566 {
2567 abi_long ret;
2568 int len, val;
2569 socklen_t lv;
2570
2571 switch(level) {
2572 case TARGET_SOL_SOCKET:
2573 level = SOL_SOCKET;
2574 switch (optname) {
2575 /* These don't just return a single integer */
2576 case TARGET_SO_PEERNAME:
2577 goto unimplemented;
2578 case TARGET_SO_RCVTIMEO: {
2579 struct timeval tv;
2580 socklen_t tvlen;
2581
2582 optname = SO_RCVTIMEO;
2583
2584 get_timeout:
2585 if (get_user_u32(len, optlen)) {
2586 return -TARGET_EFAULT;
2587 }
2588 if (len < 0) {
2589 return -TARGET_EINVAL;
2590 }
2591
2592 tvlen = sizeof(tv);
2593 ret = get_errno(getsockopt(sockfd, level, optname,
2594 &tv, &tvlen));
2595 if (ret < 0) {
2596 return ret;
2597 }
2598 if (len > sizeof(struct target_timeval)) {
2599 len = sizeof(struct target_timeval);
2600 }
2601 if (copy_to_user_timeval(optval_addr, &tv)) {
2602 return -TARGET_EFAULT;
2603 }
2604 if (put_user_u32(len, optlen)) {
2605 return -TARGET_EFAULT;
2606 }
2607 break;
2608 }
2609 case TARGET_SO_SNDTIMEO:
2610 optname = SO_SNDTIMEO;
2611 goto get_timeout;
2612 case TARGET_SO_PEERCRED: {
2613 struct ucred cr;
2614 socklen_t crlen;
2615 struct target_ucred *tcr;
2616
2617 if (get_user_u32(len, optlen)) {
2618 return -TARGET_EFAULT;
2619 }
2620 if (len < 0) {
2621 return -TARGET_EINVAL;
2622 }
2623
2624 crlen = sizeof(cr);
2625 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2626 &cr, &crlen));
2627 if (ret < 0) {
2628 return ret;
2629 }
2630 if (len > crlen) {
2631 len = crlen;
2632 }
2633 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2634 return -TARGET_EFAULT;
2635 }
2636 __put_user(cr.pid, &tcr->pid);
2637 __put_user(cr.uid, &tcr->uid);
2638 __put_user(cr.gid, &tcr->gid);
2639 unlock_user_struct(tcr, optval_addr, 1);
2640 if (put_user_u32(len, optlen)) {
2641 return -TARGET_EFAULT;
2642 }
2643 break;
2644 }
2645 case TARGET_SO_PEERSEC: {
2646 char *name;
2647
2648 if (get_user_u32(len, optlen)) {
2649 return -TARGET_EFAULT;
2650 }
2651 if (len < 0) {
2652 return -TARGET_EINVAL;
2653 }
2654 name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
2655 if (!name) {
2656 return -TARGET_EFAULT;
2657 }
2658 lv = len;
2659 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
2660 name, &lv));
2661 if (put_user_u32(lv, optlen)) {
2662 ret = -TARGET_EFAULT;
2663 }
2664 unlock_user(name, optval_addr, lv);
2665 break;
2666 }
2667 case TARGET_SO_LINGER:
2668 {
2669 struct linger lg;
2670 socklen_t lglen;
2671 struct target_linger *tlg;
2672
2673 if (get_user_u32(len, optlen)) {
2674 return -TARGET_EFAULT;
2675 }
2676 if (len < 0) {
2677 return -TARGET_EINVAL;
2678 }
2679
2680 lglen = sizeof(lg);
2681 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2682 &lg, &lglen));
2683 if (ret < 0) {
2684 return ret;
2685 }
2686 if (len > lglen) {
2687 len = lglen;
2688 }
2689 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2690 return -TARGET_EFAULT;
2691 }
2692 __put_user(lg.l_onoff, &tlg->l_onoff);
2693 __put_user(lg.l_linger, &tlg->l_linger);
2694 unlock_user_struct(tlg, optval_addr, 1);
2695 if (put_user_u32(len, optlen)) {
2696 return -TARGET_EFAULT;
2697 }
2698 break;
2699 }
2700 /* Options with 'int' argument. */
2701 case TARGET_SO_DEBUG:
2702 optname = SO_DEBUG;
2703 goto int_case;
2704 case TARGET_SO_REUSEADDR:
2705 optname = SO_REUSEADDR;
2706 goto int_case;
2707 #ifdef SO_REUSEPORT
2708 case TARGET_SO_REUSEPORT:
2709 optname = SO_REUSEPORT;
2710 goto int_case;
2711 #endif
2712 case TARGET_SO_TYPE:
2713 optname = SO_TYPE;
2714 goto int_case;
2715 case TARGET_SO_ERROR:
2716 optname = SO_ERROR;
2717 goto int_case;
2718 case TARGET_SO_DONTROUTE:
2719 optname = SO_DONTROUTE;
2720 goto int_case;
2721 case TARGET_SO_BROADCAST:
2722 optname = SO_BROADCAST;
2723 goto int_case;
2724 case TARGET_SO_SNDBUF:
2725 optname = SO_SNDBUF;
2726 goto int_case;
2727 case TARGET_SO_RCVBUF:
2728 optname = SO_RCVBUF;
2729 goto int_case;
2730 case TARGET_SO_KEEPALIVE:
2731 optname = SO_KEEPALIVE;
2732 goto int_case;
2733 case TARGET_SO_OOBINLINE:
2734 optname = SO_OOBINLINE;
2735 goto int_case;
2736 case TARGET_SO_NO_CHECK:
2737 optname = SO_NO_CHECK;
2738 goto int_case;
2739 case TARGET_SO_PRIORITY:
2740 optname = SO_PRIORITY;
2741 goto int_case;
2742 #ifdef SO_BSDCOMPAT
2743 case TARGET_SO_BSDCOMPAT:
2744 optname = SO_BSDCOMPAT;
2745 goto int_case;
2746 #endif
2747 case TARGET_SO_PASSCRED:
2748 optname = SO_PASSCRED;
2749 goto int_case;
2750 case TARGET_SO_TIMESTAMP:
2751 optname = SO_TIMESTAMP;
2752 goto int_case;
2753 case TARGET_SO_RCVLOWAT:
2754 optname = SO_RCVLOWAT;
2755 goto int_case;
2756 case TARGET_SO_ACCEPTCONN:
2757 optname = SO_ACCEPTCONN;
2758 goto int_case;
2759 case TARGET_SO_PROTOCOL:
2760 optname = SO_PROTOCOL;
2761 goto int_case;
2762 case TARGET_SO_DOMAIN:
2763 optname = SO_DOMAIN;
2764 goto int_case;
2765 default:
2766 goto int_case;
2767 }
2768 break;
2769 case SOL_TCP:
2770 case SOL_UDP:
2771 /* TCP and UDP options all take an 'int' value. */
2772 int_case:
2773 if (get_user_u32(len, optlen))
2774 return -TARGET_EFAULT;
2775 if (len < 0)
2776 return -TARGET_EINVAL;
2777 lv = sizeof(lv);
2778 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2779 if (ret < 0)
2780 return ret;
2781 switch (optname) {
2782 case SO_TYPE:
2783 val = host_to_target_sock_type(val);
2784 break;
2785 case SO_ERROR:
2786 val = host_to_target_errno(val);
2787 break;
2788 }
2789 if (len > lv)
2790 len = lv;
2791 if (len == 4) {
2792 if (put_user_u32(val, optval_addr))
2793 return -TARGET_EFAULT;
2794 } else {
2795 if (put_user_u8(val, optval_addr))
2796 return -TARGET_EFAULT;
2797 }
2798 if (put_user_u32(len, optlen))
2799 return -TARGET_EFAULT;
2800 break;
2801 case SOL_IP:
2802 switch(optname) {
2803 case IP_TOS:
2804 case IP_TTL:
2805 case IP_HDRINCL:
2806 case IP_ROUTER_ALERT:
2807 case IP_RECVOPTS:
2808 case IP_RETOPTS:
2809 case IP_PKTINFO:
2810 case IP_MTU_DISCOVER:
2811 case IP_RECVERR:
2812 case IP_RECVTOS:
2813 #ifdef IP_FREEBIND
2814 case IP_FREEBIND:
2815 #endif
2816 case IP_MULTICAST_TTL:
2817 case IP_MULTICAST_LOOP:
2818 if (get_user_u32(len, optlen))
2819 return -TARGET_EFAULT;
2820 if (len < 0)
2821 return -TARGET_EINVAL;
2822 lv = sizeof(lv);
2823 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2824 if (ret < 0)
2825 return ret;
2826 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2827 len = 1;
2828 if (put_user_u32(len, optlen)
2829 || put_user_u8(val, optval_addr))
2830 return -TARGET_EFAULT;
2831 } else {
2832 if (len > sizeof(int))
2833 len = sizeof(int);
2834 if (put_user_u32(len, optlen)
2835 || put_user_u32(val, optval_addr))
2836 return -TARGET_EFAULT;
2837 }
2838 break;
2839 default:
2840 ret = -TARGET_ENOPROTOOPT;
2841 break;
2842 }
2843 break;
2844 case SOL_IPV6:
2845 switch (optname) {
2846 case IPV6_MTU_DISCOVER:
2847 case IPV6_MTU:
2848 case IPV6_V6ONLY:
2849 case IPV6_RECVPKTINFO:
2850 case IPV6_UNICAST_HOPS:
2851 case IPV6_MULTICAST_HOPS:
2852 case IPV6_MULTICAST_LOOP:
2853 case IPV6_RECVERR:
2854 case IPV6_RECVHOPLIMIT:
2855 case IPV6_2292HOPLIMIT:
2856 case IPV6_CHECKSUM:
2857 case IPV6_ADDRFORM:
2858 case IPV6_2292PKTINFO:
2859 case IPV6_RECVTCLASS:
2860 case IPV6_RECVRTHDR:
2861 case IPV6_2292RTHDR:
2862 case IPV6_RECVHOPOPTS:
2863 case IPV6_2292HOPOPTS:
2864 case IPV6_RECVDSTOPTS:
2865 case IPV6_2292DSTOPTS:
2866 case IPV6_TCLASS:
2867 case IPV6_ADDR_PREFERENCES:
2868 #ifdef IPV6_RECVPATHMTU
2869 case IPV6_RECVPATHMTU:
2870 #endif
2871 #ifdef IPV6_TRANSPARENT
2872 case IPV6_TRANSPARENT:
2873 #endif
2874 #ifdef IPV6_FREEBIND
2875 case IPV6_FREEBIND:
2876 #endif
2877 #ifdef IPV6_RECVORIGDSTADDR
2878 case IPV6_RECVORIGDSTADDR:
2879 #endif
2880 if (get_user_u32(len, optlen))
2881 return -TARGET_EFAULT;
2882 if (len < 0)
2883 return -TARGET_EINVAL;
2884 lv = sizeof(lv);
2885 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2886 if (ret < 0)
2887 return ret;
2888 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2889 len = 1;
2890 if (put_user_u32(len, optlen)
2891 || put_user_u8(val, optval_addr))
2892 return -TARGET_EFAULT;
2893 } else {
2894 if (len > sizeof(int))
2895 len = sizeof(int);
2896 if (put_user_u32(len, optlen)
2897 || put_user_u32(val, optval_addr))
2898 return -TARGET_EFAULT;
2899 }
2900 break;
2901 default:
2902 ret = -TARGET_ENOPROTOOPT;
2903 break;
2904 }
2905 break;
2906 #ifdef SOL_NETLINK
2907 case SOL_NETLINK:
2908 switch (optname) {
2909 case NETLINK_PKTINFO:
2910 case NETLINK_BROADCAST_ERROR:
2911 case NETLINK_NO_ENOBUFS:
2912 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2913 case NETLINK_LISTEN_ALL_NSID:
2914 case NETLINK_CAP_ACK:
2915 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2916 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2917 case NETLINK_EXT_ACK:
2918 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2919 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2920 case NETLINK_GET_STRICT_CHK:
2921 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2922 if (get_user_u32(len, optlen)) {
2923 return -TARGET_EFAULT;
2924 }
2925 if (len != sizeof(val)) {
2926 return -TARGET_EINVAL;
2927 }
2928 lv = len;
2929 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2930 if (ret < 0) {
2931 return ret;
2932 }
2933 if (put_user_u32(lv, optlen)
2934 || put_user_u32(val, optval_addr)) {
2935 return -TARGET_EFAULT;
2936 }
2937 break;
2938 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2939 case NETLINK_LIST_MEMBERSHIPS:
2940 {
2941 uint32_t *results;
2942 int i;
2943 if (get_user_u32(len, optlen)) {
2944 return -TARGET_EFAULT;
2945 }
2946 if (len < 0) {
2947 return -TARGET_EINVAL;
2948 }
2949 results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
2950 if (!results && len > 0) {
2951 return -TARGET_EFAULT;
2952 }
2953 lv = len;
2954 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
2955 if (ret < 0) {
2956 unlock_user(results, optval_addr, 0);
2957 return ret;
2958 }
2959 /* swap host endianess to target endianess. */
2960 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
2961 results[i] = tswap32(results[i]);
2962 }
2963 if (put_user_u32(lv, optlen)) {
2964 return -TARGET_EFAULT;
2965 }
2966 unlock_user(results, optval_addr, 0);
2967 break;
2968 }
2969 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2970 default:
2971 goto unimplemented;
2972 }
2973 break;
2974 #endif /* SOL_NETLINK */
2975 default:
2976 unimplemented:
2977 qemu_log_mask(LOG_UNIMP,
2978 "getsockopt level=%d optname=%d not yet supported\n",
2979 level, optname);
2980 ret = -TARGET_EOPNOTSUPP;
2981 break;
2982 }
2983 return ret;
2984 }
2985
2986 /* Convert target low/high pair representing file offset into the host
2987 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2988 * as the kernel doesn't handle them either.
2989 */
2990 static void target_to_host_low_high(abi_ulong tlow,
2991 abi_ulong thigh,
2992 unsigned long *hlow,
2993 unsigned long *hhigh)
2994 {
2995 uint64_t off = tlow |
2996 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2997 TARGET_LONG_BITS / 2;
2998
2999 *hlow = off;
3000 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
3001 }
3002
3003 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
3004 abi_ulong count, int copy)
3005 {
3006 struct target_iovec *target_vec;
3007 struct iovec *vec;
3008 abi_ulong total_len, max_len;
3009 int i;
3010 int err = 0;
3011 bool bad_address = false;
3012
3013 if (count == 0) {
3014 errno = 0;
3015 return NULL;
3016 }
3017 if (count > IOV_MAX) {
3018 errno = EINVAL;
3019 return NULL;
3020 }
3021
3022 vec = g_try_new0(struct iovec, count);
3023 if (vec == NULL) {
3024 errno = ENOMEM;
3025 return NULL;
3026 }
3027
3028 target_vec = lock_user(VERIFY_READ, target_addr,
3029 count * sizeof(struct target_iovec), 1);
3030 if (target_vec == NULL) {
3031 err = EFAULT;
3032 goto fail2;
3033 }
3034
3035 /* ??? If host page size > target page size, this will result in a
3036 value larger than what we can actually support. */
3037 max_len = 0x7fffffff & TARGET_PAGE_MASK;
3038 total_len = 0;
3039
3040 for (i = 0; i < count; i++) {
3041 abi_ulong base = tswapal(target_vec[i].iov_base);
3042 abi_long len = tswapal(target_vec[i].iov_len);
3043
3044 if (len < 0) {
3045 err = EINVAL;
3046 goto fail;
3047 } else if (len == 0) {
3048 /* Zero length pointer is ignored. */
3049 vec[i].iov_base = 0;
3050 } else {
3051 vec[i].iov_base = lock_user(type, base, len, copy);
3052 /* If the first buffer pointer is bad, this is a fault. But
3053 * subsequent bad buffers will result in a partial write; this
3054 * is realized by filling the vector with null pointers and
3055 * zero lengths. */
3056 if (!vec[i].iov_base) {
3057 if (i == 0) {
3058 err = EFAULT;
3059 goto fail;
3060 } else {
3061 bad_address = true;
3062 }
3063 }
3064 if (bad_address) {
3065 len = 0;
3066 }
3067 if (len > max_len - total_len) {
3068 len = max_len - total_len;
3069 }
3070 }
3071 vec[i].iov_len = len;
3072 total_len += len;
3073 }
3074
3075 unlock_user(target_vec, target_addr, 0);
3076 return vec;
3077
3078 fail:
3079 while (--i >= 0) {
3080 if (tswapal(target_vec[i].iov_len) > 0) {
3081 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3082 }
3083 }
3084 unlock_user(target_vec, target_addr, 0);
3085 fail2:
3086 g_free(vec);
3087 errno = err;
3088 return NULL;
3089 }
3090
3091 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3092 abi_ulong count, int copy)
3093 {
3094 struct target_iovec *target_vec;
3095 int i;
3096
3097 target_vec = lock_user(VERIFY_READ, target_addr,
3098 count * sizeof(struct target_iovec), 1);
3099 if (target_vec) {
3100 for (i = 0; i < count; i++) {
3101 abi_ulong base = tswapal(target_vec[i].iov_base);
3102 abi_long len = tswapal(target_vec[i].iov_len);
3103 if (len < 0) {
3104 break;
3105 }
3106 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3107 }
3108 unlock_user(target_vec, target_addr, 0);
3109 }
3110
3111 g_free(vec);
3112 }
3113
3114 static inline int target_to_host_sock_type(int *type)
3115 {
3116 int host_type = 0;
3117 int target_type = *type;
3118
3119 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3120 case TARGET_SOCK_DGRAM:
3121 host_type = SOCK_DGRAM;
3122 break;
3123 case TARGET_SOCK_STREAM:
3124 host_type = SOCK_STREAM;
3125 break;
3126 default:
3127 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3128 break;
3129 }
3130 if (target_type & TARGET_SOCK_CLOEXEC) {
3131 #if defined(SOCK_CLOEXEC)
3132 host_type |= SOCK_CLOEXEC;
3133 #else
3134 return -TARGET_EINVAL;
3135 #endif
3136 }
3137 if (target_type & TARGET_SOCK_NONBLOCK) {
3138 #if defined(SOCK_NONBLOCK)
3139 host_type |= SOCK_NONBLOCK;
3140 #elif !defined(O_NONBLOCK)
3141 return -TARGET_EINVAL;
3142 #endif
3143 }
3144 *type = host_type;
3145 return 0;
3146 }
3147
3148 /* Try to emulate socket type flags after socket creation. */
3149 static int sock_flags_fixup(int fd, int target_type)
3150 {
3151 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3152 if (target_type & TARGET_SOCK_NONBLOCK) {
3153 int flags = fcntl(fd, F_GETFL);
3154 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3155 close(fd);
3156 return -TARGET_EINVAL;
3157 }
3158 }
3159 #endif
3160 return fd;
3161 }
3162
3163 /* do_socket() Must return target values and target errnos. */
3164 static abi_long do_socket(int domain, int type, int protocol)
3165 {
3166 int target_type = type;
3167 int ret;
3168
3169 ret = target_to_host_sock_type(&type);
3170 if (ret) {
3171 return ret;
3172 }
3173
3174 if (domain == PF_NETLINK && !(
3175 #ifdef CONFIG_RTNETLINK
3176 protocol == NETLINK_ROUTE ||
3177 #endif
3178 protocol == NETLINK_KOBJECT_UEVENT ||
3179 protocol == NETLINK_AUDIT)) {
3180 return -TARGET_EPROTONOSUPPORT;
3181 }
3182
3183 if (domain == AF_PACKET ||
3184 (domain == AF_INET && type == SOCK_PACKET)) {
3185 protocol = tswap16(protocol);
3186 }
3187
3188 ret = get_errno(socket(domain, type, protocol));
3189 if (ret >= 0) {
3190 ret = sock_flags_fixup(ret, target_type);
3191 if (type == SOCK_PACKET) {
3192 /* Manage an obsolete case :
3193 * if socket type is SOCK_PACKET, bind by name
3194 */
3195 fd_trans_register(ret, &target_packet_trans);
3196 } else if (domain == PF_NETLINK) {
3197 switch (protocol) {
3198 #ifdef CONFIG_RTNETLINK
3199 case NETLINK_ROUTE:
3200 fd_trans_register(ret, &target_netlink_route_trans);
3201 break;
3202 #endif
3203 case NETLINK_KOBJECT_UEVENT:
3204 /* nothing to do: messages are strings */
3205 break;
3206 case NETLINK_AUDIT:
3207 fd_trans_register(ret, &target_netlink_audit_trans);
3208 break;
3209 default:
3210 g_assert_not_reached();
3211 }
3212 }
3213 }
3214 return ret;
3215 }
3216
3217 /* do_bind() Must return target values and target errnos. */
3218 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3219 socklen_t addrlen)
3220 {
3221 void *addr;
3222 abi_long ret;
3223
3224 if ((int)addrlen < 0) {
3225 return -TARGET_EINVAL;
3226 }
3227
3228 addr = alloca(addrlen+1);
3229
3230 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3231 if (ret)
3232 return ret;
3233
3234 return get_errno(bind(sockfd, addr, addrlen));
3235 }
3236
3237 /* do_connect() Must return target values and target errnos. */
3238 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3239 socklen_t addrlen)
3240 {
3241 void *addr;
3242 abi_long ret;
3243
3244 if ((int)addrlen < 0) {
3245 return -TARGET_EINVAL;
3246 }
3247
3248 addr = alloca(addrlen+1);
3249
3250 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3251 if (ret)
3252 return ret;
3253
3254 return get_errno(safe_connect(sockfd, addr, addrlen));
3255 }
3256
3257 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3258 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3259 int flags, int send)
3260 {
3261 abi_long ret, len;
3262 struct msghdr msg;
3263 abi_ulong count;
3264 struct iovec *vec;
3265 abi_ulong target_vec;
3266
3267 if (msgp->msg_name) {
3268 msg.msg_namelen = tswap32(msgp->msg_namelen);
3269 msg.msg_name = alloca(msg.msg_namelen+1);
3270 ret = target_to_host_sockaddr(fd, msg.msg_name,
3271 tswapal(msgp->msg_name),
3272 msg.msg_namelen);
3273 if (ret == -TARGET_EFAULT) {
3274 /* For connected sockets msg_name and msg_namelen must
3275 * be ignored, so returning EFAULT immediately is wrong.
3276 * Instead, pass a bad msg_name to the host kernel, and
3277 * let it decide whether to return EFAULT or not.
3278 */
3279 msg.msg_name = (void *)-1;
3280 } else if (ret) {
3281 goto out2;
3282 }
3283 } else {
3284 msg.msg_name = NULL;
3285 msg.msg_namelen = 0;
3286 }
3287 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3288 msg.msg_control = alloca(msg.msg_controllen);
3289 memset(msg.msg_control, 0, msg.msg_controllen);
3290
3291 msg.msg_flags = tswap32(msgp->msg_flags);
3292
3293 count = tswapal(msgp->msg_iovlen);
3294 target_vec = tswapal(msgp->msg_iov);
3295
3296 if (count > IOV_MAX) {
3297 /* sendrcvmsg returns a different errno for this condition than
3298 * readv/writev, so we must catch it here before lock_iovec() does.
3299 */
3300 ret = -TARGET_EMSGSIZE;
3301 goto out2;
3302 }
3303
3304 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3305 target_vec, count, send);
3306 if (vec == NULL) {
3307 ret = -host_to_target_errno(errno);
3308 /* allow sending packet without any iov, e.g. with MSG_MORE flag */
3309 if (!send || ret) {
3310 goto out2;
3311 }
3312 }
3313 msg.msg_iovlen = count;
3314 msg.msg_iov = vec;
3315
3316 if (send) {
3317 if (fd_trans_target_to_host_data(fd)) {
3318 void *host_msg;
3319
3320 host_msg = g_malloc(msg.msg_iov->iov_len);
3321 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3322 ret = fd_trans_target_to_host_data(fd)(host_msg,
3323 msg.msg_iov->iov_len);
3324 if (ret >= 0) {
3325 msg.msg_iov->iov_base = host_msg;
3326 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3327 }
3328 g_free(host_msg);
3329 } else {
3330 ret = target_to_host_cmsg(&msg, msgp);
3331 if (ret == 0) {
3332 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3333 }
3334 }
3335 } else {
3336 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3337 if (!is_error(ret)) {
3338 len = ret;
3339 if (fd_trans_host_to_target_data(fd)) {
3340 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3341 MIN(msg.msg_iov->iov_len, len));
3342 }
3343 if (!is_error(ret)) {
3344 ret = host_to_target_cmsg(msgp, &msg);
3345 }
3346 if (!is_error(ret)) {
3347 msgp->msg_namelen = tswap32(msg.msg_namelen);
3348 msgp->msg_flags = tswap32(msg.msg_flags);
3349 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3350 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3351 msg.msg_name, msg.msg_namelen);
3352 if (ret) {
3353 goto out;
3354 }
3355 }
3356
3357 ret = len;
3358 }
3359 }
3360 }
3361
3362 out:
3363 if (vec) {
3364 unlock_iovec(vec, target_vec, count, !send);
3365 }
3366 out2:
3367 return ret;
3368 }
3369
3370 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3371 int flags, int send)
3372 {
3373 abi_long ret;
3374 struct target_msghdr *msgp;
3375
3376 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3377 msgp,
3378 target_msg,
3379 send ? 1 : 0)) {
3380 return -TARGET_EFAULT;
3381 }
3382 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3383 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3384 return ret;
3385 }
3386
3387 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3388 * so it might not have this *mmsg-specific flag either.
3389 */
3390 #ifndef MSG_WAITFORONE
3391 #define MSG_WAITFORONE 0x10000
3392 #endif
3393
3394 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3395 unsigned int vlen, unsigned int flags,
3396 int send)
3397 {
3398 struct target_mmsghdr *mmsgp;
3399 abi_long ret = 0;
3400 int i;
3401
3402 if (vlen > UIO_MAXIOV) {
3403 vlen = UIO_MAXIOV;
3404 }
3405
3406 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3407 if (!mmsgp) {
3408 return -TARGET_EFAULT;
3409 }
3410
3411 for (i = 0; i < vlen; i++) {
3412 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3413 if (is_error(ret)) {
3414 break;
3415 }
3416 mmsgp[i].msg_len = tswap32(ret);
3417 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3418 if (flags & MSG_WAITFORONE) {
3419 flags |= MSG_DONTWAIT;
3420 }
3421 }
3422
3423 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3424
3425 /* Return number of datagrams sent if we sent any at all;
3426 * otherwise return the error.
3427 */
3428 if (i) {
3429 return i;
3430 }
3431 return ret;
3432 }
3433
3434 /* do_accept4() Must return target values and target errnos. */
3435 static abi_long do_accept4(int fd, abi_ulong target_addr,
3436 abi_ulong target_addrlen_addr, int flags)
3437 {
3438 socklen_t addrlen, ret_addrlen;
3439 void *addr;
3440 abi_long ret;
3441 int host_flags;
3442
3443 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3444
3445 if (target_addr == 0) {
3446 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3447 }
3448
3449 /* linux returns EFAULT if addrlen pointer is invalid */
3450 if (get_user_u32(addrlen, target_addrlen_addr))
3451 return -TARGET_EFAULT;
3452
3453 if ((int)addrlen < 0) {
3454 return -TARGET_EINVAL;
3455 }
3456
3457 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3458 return -TARGET_EFAULT;
3459 }
3460
3461 addr = alloca(addrlen);
3462
3463 ret_addrlen = addrlen;
3464 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3465 if (!is_error(ret)) {
3466 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3467 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3468 ret = -TARGET_EFAULT;
3469 }
3470 }
3471 return ret;
3472 }
3473
3474 /* do_getpeername() Must return target values and target errnos. */
3475 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3476 abi_ulong target_addrlen_addr)
3477 {
3478 socklen_t addrlen, ret_addrlen;
3479 void *addr;
3480 abi_long ret;
3481
3482 if (get_user_u32(addrlen, target_addrlen_addr))
3483 return -TARGET_EFAULT;
3484
3485 if ((int)addrlen < 0) {
3486 return -TARGET_EINVAL;
3487 }
3488
3489 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3490 return -TARGET_EFAULT;
3491 }
3492
3493 addr = alloca(addrlen);
3494
3495 ret_addrlen = addrlen;
3496 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3497 if (!is_error(ret)) {
3498 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3499 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3500 ret = -TARGET_EFAULT;
3501 }
3502 }
3503 return ret;
3504 }
3505
3506 /* do_getsockname() Must return target values and target errnos. */
3507 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3508 abi_ulong target_addrlen_addr)
3509 {
3510 socklen_t addrlen, ret_addrlen;
3511 void *addr;
3512 abi_long ret;
3513
3514 if (get_user_u32(addrlen, target_addrlen_addr))
3515 return -TARGET_EFAULT;
3516
3517 if ((int)addrlen < 0) {
3518 return -TARGET_EINVAL;
3519 }
3520
3521 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3522 return -TARGET_EFAULT;
3523 }
3524
3525 addr = alloca(addrlen);
3526
3527 ret_addrlen = addrlen;
3528 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3529 if (!is_error(ret)) {
3530 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3531 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3532 ret = -TARGET_EFAULT;
3533 }
3534 }
3535 return ret;
3536 }
3537
3538 /* do_socketpair() Must return target values and target errnos. */
3539 static abi_long do_socketpair(int domain, int type, int protocol,
3540 abi_ulong target_tab_addr)
3541 {
3542 int tab[2];
3543 abi_long ret;
3544
3545 target_to_host_sock_type(&type);
3546
3547 ret = get_errno(socketpair(domain, type, protocol, tab));
3548 if (!is_error(ret)) {
3549 if (put_user_s32(tab[0], target_tab_addr)
3550 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3551 ret = -TARGET_EFAULT;
3552 }
3553 return ret;
3554 }
3555
3556 /* do_sendto() Must return target values and target errnos. */
3557 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3558 abi_ulong target_addr, socklen_t addrlen)
3559 {
3560 void *addr;
3561 void *host_msg;
3562 void *copy_msg = NULL;
3563 abi_long ret;
3564
3565 if ((int)addrlen < 0) {
3566 return -TARGET_EINVAL;
3567 }
3568
3569 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3570 if (!host_msg)
3571 return -TARGET_EFAULT;
3572 if (fd_trans_target_to_host_data(fd)) {
3573 copy_msg = host_msg;
3574 host_msg = g_malloc(len);
3575 memcpy(host_msg, copy_msg, len);
3576 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3577 if (ret < 0) {
3578 goto fail;
3579 }
3580 }
3581 if (target_addr) {
3582 addr = alloca(addrlen+1);
3583 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3584 if (ret) {
3585 goto fail;
3586 }
3587 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3588 } else {
3589 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3590 }
3591 fail:
3592 if (copy_msg) {
3593 g_free(host_msg);
3594 host_msg = copy_msg;
3595 }
3596 unlock_user(host_msg, msg, 0);
3597 return ret;
3598 }
3599
3600 /* do_recvfrom() Must return target values and target errnos. */
3601 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3602 abi_ulong target_addr,
3603 abi_ulong target_addrlen)
3604 {
3605 socklen_t addrlen, ret_addrlen;
3606 void *addr;
3607 void *host_msg;
3608 abi_long ret;
3609
3610 if (!msg) {
3611 host_msg = NULL;
3612 } else {
3613 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3614 if (!host_msg) {
3615 return -TARGET_EFAULT;
3616 }
3617 }
3618 if (target_addr) {
3619 if (get_user_u32(addrlen, target_addrlen)) {
3620 ret = -TARGET_EFAULT;
3621 goto fail;
3622 }
3623 if ((int)addrlen < 0) {
3624 ret = -TARGET_EINVAL;
3625 goto fail;
3626 }
3627 addr = alloca(addrlen);
3628 ret_addrlen = addrlen;
3629 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3630 addr, &ret_addrlen));
3631 } else {
3632 addr = NULL; /* To keep compiler quiet. */
3633 addrlen = 0; /* To keep compiler quiet. */
3634 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3635 }
3636 if (!is_error(ret)) {
3637 if (fd_trans_host_to_target_data(fd)) {
3638 abi_long trans;
3639 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3640 if (is_error(trans)) {
3641 ret = trans;
3642 goto fail;
3643 }
3644 }
3645 if (target_addr) {
3646 host_to_target_sockaddr(target_addr, addr,
3647 MIN(addrlen, ret_addrlen));
3648 if (put_user_u32(ret_addrlen, target_addrlen)) {
3649 ret = -TARGET_EFAULT;
3650 goto fail;
3651 }
3652 }
3653 unlock_user(host_msg, msg, len);
3654 } else {
3655 fail:
3656 unlock_user(host_msg, msg, 0);
3657 }
3658 return ret;
3659 }
3660
3661 #ifdef TARGET_NR_socketcall
3662 /* do_socketcall() must return target values and target errnos. */
3663 static abi_long do_socketcall(int num, abi_ulong vptr)
3664 {
3665 static const unsigned nargs[] = { /* number of arguments per operation */
3666 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3667 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3668 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3669 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3670 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3671 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3672 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3673 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3674 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3675 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3676 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3677 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3678 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3679 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3680 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3681 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3682 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3683 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3684 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3685 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3686 };
3687 abi_long a[6]; /* max 6 args */
3688 unsigned i;
3689
3690 /* check the range of the first argument num */
3691 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3692 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3693 return -TARGET_EINVAL;
3694 }
3695 /* ensure we have space for args */
3696 if (nargs[num] > ARRAY_SIZE(a)) {
3697 return -TARGET_EINVAL;
3698 }
3699 /* collect the arguments in a[] according to nargs[] */
3700 for (i = 0; i < nargs[num]; ++i) {
3701 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3702 return -TARGET_EFAULT;
3703 }
3704 }
3705 /* now when we have the args, invoke the appropriate underlying function */
3706 switch (num) {
3707 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3708 return do_socket(a[0], a[1], a[2]);
3709 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3710 return do_bind(a[0], a[1], a[2]);
3711 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3712 return do_connect(a[0], a[1], a[2]);
3713 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3714 return get_errno(listen(a[0], a[1]));
3715 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3716 return do_accept4(a[0], a[1], a[2], 0);
3717 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3718 return do_getsockname(a[0], a[1], a[2]);
3719 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3720 return do_getpeername(a[0], a[1], a[2]);
3721 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3722 return do_socketpair(a[0], a[1], a[2], a[3]);
3723 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3724 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3725 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3726 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3727 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3728 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3729 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3730 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3731 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3732 return get_errno(shutdown(a[0], a[1]));
3733 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3734 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3735 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3736 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3737 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3738 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3739 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3740 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3741 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3742 return do_accept4(a[0], a[1], a[2], a[3]);
3743 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3744 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3745 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3746 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3747 default:
3748 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
3749 return -TARGET_EINVAL;
3750 }
3751 }
3752 #endif
3753
3754 #define N_SHM_REGIONS 32
3755
3756 static struct shm_region {
3757 abi_ulong start;
3758 abi_ulong size;
3759 bool in_use;
3760 } shm_regions[N_SHM_REGIONS];
3761
3762 #ifndef TARGET_SEMID64_DS
3763 /* asm-generic version of this struct */
3764 struct target_semid64_ds
3765 {
3766 struct target_ipc_perm sem_perm;
3767 abi_ulong sem_otime;
3768 #if TARGET_ABI_BITS == 32
3769 abi_ulong __unused1;
3770 #endif
3771 abi_ulong sem_ctime;
3772 #if TARGET_ABI_BITS == 32
3773 abi_ulong __unused2;
3774 #endif
3775 abi_ulong sem_nsems;
3776 abi_ulong __unused3;
3777 abi_ulong __unused4;
3778 };
3779 #endif
3780
3781 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3782 abi_ulong target_addr)
3783 {
3784 struct target_ipc_perm *target_ip;
3785 struct target_semid64_ds *target_sd;
3786
3787 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3788 return -TARGET_EFAULT;
3789 target_ip = &(target_sd->sem_perm);
3790 host_ip->__key = tswap32(target_ip->__key);
3791 host_ip->uid = tswap32(target_ip->uid);
3792 host_ip->gid = tswap32(target_ip->gid);
3793 host_ip->cuid = tswap32(target_ip->cuid);
3794 host_ip->cgid = tswap32(target_ip->cgid);
3795 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3796 host_ip->mode = tswap32(target_ip->mode);
3797 #else
3798 host_ip->mode = tswap16(target_ip->mode);
3799 #endif
3800 #if defined(TARGET_PPC)
3801 host_ip->__seq = tswap32(target_ip->__seq);
3802 #else
3803 host_ip->__seq = tswap16(target_ip->__seq);
3804 #endif
3805 unlock_user_struct(target_sd, target_addr, 0);
3806 return 0;
3807 }
3808
3809 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3810 struct ipc_perm *host_ip)
3811 {
3812 struct target_ipc_perm *target_ip;
3813 struct target_semid64_ds *target_sd;
3814
3815 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3816 return -TARGET_EFAULT;
3817 target_ip = &(target_sd->sem_perm);
3818 target_ip->__key = tswap32(host_ip->__key);
3819 target_ip->uid = tswap32(host_ip->uid);
3820 target_ip->gid = tswap32(host_ip->gid);
3821 target_ip->cuid = tswap32(host_ip->cuid);
3822 target_ip->cgid = tswap32(host_ip->cgid);
3823 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3824 target_ip->mode = tswap32(host_ip->mode);
3825 #else
3826 target_ip->mode = tswap16(host_ip->mode);
3827 #endif
3828 #if defined(TARGET_PPC)
3829 target_ip->__seq = tswap32(host_ip->__seq);
3830 #else
3831 target_ip->__seq = tswap16(host_ip->__seq);
3832 #endif
3833 unlock_user_struct(target_sd, target_addr, 1);
3834 return 0;
3835 }
3836
3837 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3838 abi_ulong target_addr)
3839 {
3840 struct target_semid64_ds *target_sd;
3841
3842 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3843 return -TARGET_EFAULT;
3844 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3845 return -TARGET_EFAULT;
3846 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3847 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3848 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3849 unlock_user_struct(target_sd, target_addr, 0);
3850 return 0;
3851 }
3852
3853 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3854 struct semid_ds *host_sd)
3855 {
3856 struct target_semid64_ds *target_sd;
3857
3858 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3859 return -TARGET_EFAULT;
3860 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3861 return -TARGET_EFAULT;
3862 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3863 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3864 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3865 unlock_user_struct(target_sd, target_addr, 1);
3866 return 0;
3867 }
3868
3869 struct target_seminfo {
3870 int semmap;
3871 int semmni;
3872 int semmns;
3873 int semmnu;
3874 int semmsl;
3875 int semopm;
3876 int semume;
3877 int semusz;
3878 int semvmx;
3879 int semaem;
3880 };
3881
3882 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3883 struct seminfo *host_seminfo)
3884 {
3885 struct target_seminfo *target_seminfo;
3886 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3887 return -TARGET_EFAULT;
3888 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3889 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3890 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3891 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3892 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3893 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3894 __put_user(host_seminfo->semume, &target_seminfo->semume);
3895 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3896 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3897 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3898 unlock_user_struct(target_seminfo, target_addr, 1);
3899 return 0;
3900 }
3901
3902 union semun {
3903 int val;
3904 struct semid_ds *buf;
3905 unsigned short *array;
3906 struct seminfo *__buf;
3907 };
3908
3909 union target_semun {
3910 int val;
3911 abi_ulong buf;
3912 abi_ulong array;
3913 abi_ulong __buf;
3914 };
3915
3916 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3917 abi_ulong target_addr)
3918 {
3919 int nsems;
3920 unsigned short *array;
3921 union semun semun;
3922 struct semid_ds semid_ds;
3923 int i, ret;
3924
3925 semun.buf = &semid_ds;
3926
3927 ret = semctl(semid, 0, IPC_STAT, semun);
3928 if (ret == -1)
3929 return get_errno(ret);
3930
3931 nsems = semid_ds.sem_nsems;
3932
3933 *host_array = g_try_new(unsigned short, nsems);
3934 if (!*host_array) {
3935 return -TARGET_ENOMEM;
3936 }
3937 array = lock_user(VERIFY_READ, target_addr,
3938 nsems*sizeof(unsigned short), 1);
3939 if (!array) {
3940 g_free(*host_array);
3941 return -TARGET_EFAULT;
3942 }
3943
3944 for(i=0; i<nsems; i++) {
3945 __get_user((*host_array)[i], &array[i]);
3946 }
3947 unlock_user(array, target_addr, 0);
3948
3949 return 0;
3950 }
3951
3952 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3953 unsigned short **host_array)
3954 {
3955 int nsems;
3956 unsigned short *array;
3957 union semun semun;
3958 struct semid_ds semid_ds;
3959 int i, ret;
3960
3961 semun.buf = &semid_ds;
3962
3963 ret = semctl(semid, 0, IPC_STAT, semun);
3964 if (ret == -1)
3965 return get_errno(ret);
3966
3967 nsems = semid_ds.sem_nsems;
3968
3969 array = lock_user(VERIFY_WRITE, target_addr,
3970 nsems*sizeof(unsigned short), 0);
3971 if (!array)
3972 return -TARGET_EFAULT;
3973
3974 for(i=0; i<nsems; i++) {
3975 __put_user((*host_array)[i], &array[i]);
3976 }
3977 g_free(*host_array);
3978 unlock_user(array, target_addr, 1);
3979
3980 return 0;
3981 }
3982
3983 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3984 abi_ulong target_arg)
3985 {
3986 union target_semun target_su = { .buf = target_arg };
3987 union semun arg;
3988 struct semid_ds dsarg;
3989 unsigned short *array = NULL;
3990 struct seminfo seminfo;
3991 abi_long ret = -TARGET_EINVAL;
3992 abi_long err;
3993 cmd &= 0xff;
3994
3995 switch( cmd ) {
3996 case GETVAL:
3997 case SETVAL:
3998 /* In 64 bit cross-endian situations, we will erroneously pick up
3999 * the wrong half of the union for the "val" element. To rectify
4000 * this, the entire 8-byte structure is byteswapped, followed by
4001 * a swap of the 4 byte val field. In other cases, the data is
4002 * already in proper host byte order. */
4003 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
4004 target_su.buf = tswapal(target_su.buf);
4005 arg.val = tswap32(target_su.val);
4006 } else {
4007 arg.val = target_su.val;
4008 }
4009 ret = get_errno(semctl(semid, semnum, cmd, arg));
4010 break;
4011 case GETALL:
4012 case SETALL:
4013 err = target_to_host_semarray(semid, &array, target_su.array);
4014 if (err)
4015 return err;
4016 arg.array = array;
4017 ret = get_errno(semctl(semid, semnum, cmd, arg));
4018 err = host_to_target_semarray(semid, target_su.array, &array);
4019 if (err)
4020 return err;
4021 break;
4022 case IPC_STAT:
4023 case IPC_SET:
4024 case SEM_STAT:
4025 err = target_to_host_semid_ds(&dsarg, target_su.buf);
4026 if (err)
4027 return err;
4028 arg.buf = &dsarg;
4029 ret = get_errno(semctl(semid, semnum, cmd, arg));
4030 err = host_to_target_semid_ds(target_su.buf, &dsarg);
4031 if (err)
4032 return err;
4033 break;
4034 case IPC_INFO:
4035 case SEM_INFO:
4036 arg.__buf = &seminfo;
4037 ret = get_errno(semctl(semid, semnum, cmd, arg));
4038 err = host_to_target_seminfo(target_su.__buf, &seminfo);
4039 if (err)
4040 return err;
4041 break;
4042 case IPC_RMID:
4043 case GETPID:
4044 case GETNCNT:
4045 case GETZCNT:
4046 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4047 break;
4048 }
4049
4050 return ret;
4051 }
4052
4053 struct target_sembuf {
4054 unsigned short sem_num;
4055 short sem_op;
4056 short sem_flg;
4057 };
4058
4059 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4060 abi_ulong target_addr,
4061 unsigned nsops)
4062 {
4063 struct target_sembuf *target_sembuf;
4064 int i;
4065
4066 target_sembuf = lock_user(VERIFY_READ, target_addr,
4067 nsops*sizeof(struct target_sembuf), 1);
4068 if (!target_sembuf)
4069 return -TARGET_EFAULT;
4070
4071 for(i=0; i<nsops; i++) {
4072 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4073 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4074 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4075 }
4076
4077 unlock_user(target_sembuf, target_addr, 0);
4078
4079 return 0;
4080 }
4081
4082 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \
4083 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64)
4084
4085 /*
4086 * This macro is required to handle the s390 variants, which passes the
4087 * arguments in a different order than default.
4088 */
4089 #ifdef __s390x__
4090 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4091 (__nsops), (__timeout), (__sops)
4092 #else
4093 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4094 (__nsops), 0, (__sops), (__timeout)
4095 #endif
4096
4097 static inline abi_long do_semtimedop(int semid,
4098 abi_long ptr,
4099 unsigned nsops,
4100 abi_long timeout, bool time64)
4101 {
4102 struct sembuf *sops;
4103 struct timespec ts, *pts = NULL;
4104 abi_long ret;
4105
4106 if (timeout) {
4107 pts = &ts;
4108 if (time64) {
4109 if (target_to_host_timespec64(pts, timeout)) {
4110 return -TARGET_EFAULT;
4111 }
4112 } else {
4113 if (target_to_host_timespec(pts, timeout)) {
4114 return -TARGET_EFAULT;
4115 }
4116 }
4117 }
4118
4119 if (nsops > TARGET_SEMOPM) {
4120 return -TARGET_E2BIG;
4121 }
4122
4123 sops = g_new(struct sembuf, nsops);
4124
4125 if (target_to_host_sembuf(sops, ptr, nsops)) {
4126 g_free(sops);
4127 return -TARGET_EFAULT;
4128 }
4129
4130 ret = -TARGET_ENOSYS;
4131 #ifdef __NR_semtimedop
4132 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
4133 #endif
4134 #ifdef __NR_ipc
4135 if (ret == -TARGET_ENOSYS) {
4136 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid,
4137 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts)));
4138 }
4139 #endif
4140 g_free(sops);
4141 return ret;
4142 }
4143 #endif
4144
4145 struct target_msqid_ds
4146 {
4147 struct target_ipc_perm msg_perm;
4148 abi_ulong msg_stime;
4149 #if TARGET_ABI_BITS == 32
4150 abi_ulong __unused1;
4151 #endif
4152 abi_ulong msg_rtime;
4153 #if TARGET_ABI_BITS == 32
4154 abi_ulong __unused2;
4155 #endif
4156 abi_ulong msg_ctime;
4157 #if TARGET_ABI_BITS == 32
4158 abi_ulong __unused3;
4159 #endif
4160 abi_ulong __msg_cbytes;
4161 abi_ulong msg_qnum;
4162 abi_ulong msg_qbytes;
4163 abi_ulong msg_lspid;
4164 abi_ulong msg_lrpid;
4165 abi_ulong __unused4;
4166 abi_ulong __unused5;
4167 };
4168
4169 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4170 abi_ulong target_addr)
4171 {
4172 struct target_msqid_ds *target_md;
4173
4174 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4175 return -TARGET_EFAULT;
4176 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4177 return -TARGET_EFAULT;
4178 host_md->msg_stime = tswapal(target_md->msg_stime);
4179 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4180 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4181 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4182 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4183 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4184 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4185 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4186 unlock_user_struct(target_md, target_addr, 0);
4187 return 0;
4188 }
4189
4190 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4191 struct msqid_ds *host_md)
4192 {
4193 struct target_msqid_ds *target_md;
4194
4195 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4196 return -TARGET_EFAULT;
4197 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4198 return -TARGET_EFAULT;
4199 target_md->msg_stime = tswapal(host_md->msg_stime);
4200 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4201 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4202 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4203 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4204 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4205 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4206 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4207 unlock_user_struct(target_md, target_addr, 1);
4208 return 0;
4209 }
4210
4211 struct target_msginfo {
4212 int msgpool;
4213 int msgmap;
4214 int msgmax;
4215 int msgmnb;
4216 int msgmni;
4217 int msgssz;
4218 int msgtql;
4219 unsigned short int msgseg;
4220 };
4221
4222 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4223 struct msginfo *host_msginfo)
4224 {
4225 struct target_msginfo *target_msginfo;
4226 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4227 return -TARGET_EFAULT;
4228 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4229 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4230 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4231 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4232 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4233 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4234 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4235 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4236 unlock_user_struct(target_msginfo, target_addr, 1);
4237 return 0;
4238 }
4239
4240 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4241 {
4242 struct msqid_ds dsarg;
4243 struct msginfo msginfo;
4244 abi_long ret = -TARGET_EINVAL;
4245
4246 cmd &= 0xff;
4247
4248 switch (cmd) {
4249 case IPC_STAT:
4250 case IPC_SET:
4251 case MSG_STAT:
4252 if (target_to_host_msqid_ds(&dsarg,ptr))
4253 return -TARGET_EFAULT;
4254 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4255 if (host_to_target_msqid_ds(ptr,&dsarg))
4256 return -TARGET_EFAULT;
4257 break;
4258 case IPC_RMID:
4259 ret = get_errno(msgctl(msgid, cmd, NULL));
4260 break;
4261 case IPC_INFO:
4262 case MSG_INFO:
4263 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4264 if (host_to_target_msginfo(ptr, &msginfo))
4265 return -TARGET_EFAULT;
4266 break;
4267 }
4268
4269 return ret;
4270 }
4271
4272 struct target_msgbuf {
4273 abi_long mtype;
4274 char mtext[1];
4275 };
4276
4277 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4278 ssize_t msgsz, int msgflg)
4279 {
4280 struct target_msgbuf *target_mb;
4281 struct msgbuf *host_mb;
4282 abi_long ret = 0;
4283
4284 if (msgsz < 0) {
4285 return -TARGET_EINVAL;
4286 }
4287
4288 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4289 return -TARGET_EFAULT;
4290 host_mb = g_try_malloc(msgsz + sizeof(long));
4291 if (!host_mb) {
4292 unlock_user_struct(target_mb, msgp, 0);
4293 return -TARGET_ENOMEM;
4294 }
4295 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4296 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4297 ret = -TARGET_ENOSYS;
4298 #ifdef __NR_msgsnd
4299 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4300 #endif
4301 #ifdef __NR_ipc
4302 if (ret == -TARGET_ENOSYS) {
4303 #ifdef __s390x__
4304 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4305 host_mb));
4306 #else
4307 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4308 host_mb, 0));
4309 #endif
4310 }
4311 #endif
4312 g_free(host_mb);
4313 unlock_user_struct(target_mb, msgp, 0);
4314
4315 return ret;
4316 }
4317
4318 #ifdef __NR_ipc
4319 #if defined(__sparc__)
4320 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */
4321 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp
4322 #elif defined(__s390x__)
4323 /* The s390 sys_ipc variant has only five parameters. */
4324 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4325 ((long int[]){(long int)__msgp, __msgtyp})
4326 #else
4327 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4328 ((long int[]){(long int)__msgp, __msgtyp}), 0
4329 #endif
4330 #endif
4331
4332 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4333 ssize_t msgsz, abi_long msgtyp,
4334 int msgflg)
4335 {
4336 struct target_msgbuf *target_mb;
4337 char *target_mtext;
4338 struct msgbuf *host_mb;
4339 abi_long ret = 0;
4340
4341 if (msgsz < 0) {
4342 return -TARGET_EINVAL;
4343 }
4344
4345 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4346 return -TARGET_EFAULT;
4347
4348 host_mb = g_try_malloc(msgsz + sizeof(long));
4349 if (!host_mb) {
4350 ret = -TARGET_ENOMEM;
4351 goto end;
4352 }
4353 ret = -TARGET_ENOSYS;
4354 #ifdef __NR_msgrcv
4355 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4356 #endif
4357 #ifdef __NR_ipc
4358 if (ret == -TARGET_ENOSYS) {
4359 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
4360 msgflg, MSGRCV_ARGS(host_mb, msgtyp)));
4361 }
4362 #endif
4363
4364 if (ret > 0) {
4365 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4366 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4367 if (!target_mtext) {
4368 ret = -TARGET_EFAULT;
4369 goto end;
4370 }
4371 memcpy(target_mb->mtext, host_mb->mtext, ret);
4372 unlock_user(target_mtext, target_mtext_addr, ret);
4373 }
4374
4375 target_mb->mtype = tswapal(host_mb->mtype);
4376
4377 end:
4378 if (target_mb)
4379 unlock_user_struct(target_mb, msgp, 1);
4380 g_free(host_mb);
4381 return ret;
4382 }
4383
4384 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4385 abi_ulong target_addr)
4386 {
4387 struct target_shmid_ds *target_sd;
4388
4389 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4390 return -TARGET_EFAULT;
4391 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4392 return -TARGET_EFAULT;
4393 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4394 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4395 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4396 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4397 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4398 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4399 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4400 unlock_user_struct(target_sd, target_addr, 0);
4401 return 0;
4402 }
4403
4404 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4405 struct shmid_ds *host_sd)
4406 {
4407 struct target_shmid_ds *target_sd;
4408
4409 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4410 return -TARGET_EFAULT;
4411 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4412 return -TARGET_EFAULT;
4413 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4414 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4415 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4416 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4417 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4418 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4419 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4420 unlock_user_struct(target_sd, target_addr, 1);
4421 return 0;
4422 }
4423
4424 struct target_shminfo {
4425 abi_ulong shmmax;
4426 abi_ulong shmmin;
4427 abi_ulong shmmni;
4428 abi_ulong shmseg;
4429 abi_ulong shmall;
4430 };
4431
4432 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4433 struct shminfo *host_shminfo)
4434 {
4435 struct target_shminfo *target_shminfo;
4436 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4437 return -TARGET_EFAULT;
4438 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4439 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4440 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4441 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4442 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4443 unlock_user_struct(target_shminfo, target_addr, 1);
4444 return 0;
4445 }
4446
4447 struct target_shm_info {
4448 int used_ids;
4449 abi_ulong shm_tot;
4450 abi_ulong shm_rss;
4451 abi_ulong shm_swp;
4452 abi_ulong swap_attempts;
4453 abi_ulong swap_successes;
4454 };
4455
4456 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4457 struct shm_info *host_shm_info)
4458 {
4459 struct target_shm_info *target_shm_info;
4460 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4461 return -TARGET_EFAULT;
4462 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4463 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4464 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4465 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4466 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4467 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4468 unlock_user_struct(target_shm_info, target_addr, 1);
4469 return 0;
4470 }
4471
4472 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4473 {
4474 struct shmid_ds dsarg;
4475 struct shminfo shminfo;
4476 struct shm_info shm_info;
4477 abi_long ret = -TARGET_EINVAL;
4478
4479 cmd &= 0xff;
4480
4481 switch(cmd) {
4482 case IPC_STAT:
4483 case IPC_SET:
4484 case SHM_STAT:
4485 if (target_to_host_shmid_ds(&dsarg, buf))
4486 return -TARGET_EFAULT;
4487 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4488 if (host_to_target_shmid_ds(buf, &dsarg))
4489 return -TARGET_EFAULT;
4490 break;
4491 case IPC_INFO:
4492 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4493 if (host_to_target_shminfo(buf, &shminfo))
4494 return -TARGET_EFAULT;
4495 break;
4496 case SHM_INFO:
4497 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4498 if (host_to_target_shm_info(buf, &shm_info))
4499 return -TARGET_EFAULT;
4500 break;
4501 case IPC_RMID:
4502 case SHM_LOCK:
4503 case SHM_UNLOCK:
4504 ret = get_errno(shmctl(shmid, cmd, NULL));
4505 break;
4506 }
4507
4508 return ret;
4509 }
4510
4511 #ifndef TARGET_FORCE_SHMLBA
4512 /* For most architectures, SHMLBA is the same as the page size;
4513 * some architectures have larger values, in which case they should
4514 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4515 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4516 * and defining its own value for SHMLBA.
4517 *
4518 * The kernel also permits SHMLBA to be set by the architecture to a
4519 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4520 * this means that addresses are rounded to the large size if
4521 * SHM_RND is set but addresses not aligned to that size are not rejected
4522 * as long as they are at least page-aligned. Since the only architecture
4523 * which uses this is ia64 this code doesn't provide for that oddity.
4524 */
4525 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4526 {
4527 return TARGET_PAGE_SIZE;
4528 }
4529 #endif
4530
4531 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4532 int shmid, abi_ulong shmaddr, int shmflg)
4533 {
4534 CPUState *cpu = env_cpu(cpu_env);
4535 abi_long raddr;
4536 void *host_raddr;
4537 struct shmid_ds shm_info;
4538 int i,ret;
4539 abi_ulong shmlba;
4540
4541 /* shmat pointers are always untagged */
4542
4543 /* find out the length of the shared memory segment */
4544 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4545 if (is_error(ret)) {
4546 /* can't get length, bail out */
4547 return ret;
4548 }
4549
4550 shmlba = target_shmlba(cpu_env);
4551
4552 if (shmaddr & (shmlba - 1)) {
4553 if (shmflg & SHM_RND) {
4554 shmaddr &= ~(shmlba - 1);
4555 } else {
4556 return -TARGET_EINVAL;
4557 }
4558 }
4559 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) {
4560 return -TARGET_EINVAL;
4561 }
4562
4563 mmap_lock();
4564
4565 /*
4566 * We're mapping shared memory, so ensure we generate code for parallel
4567 * execution and flush old translations. This will work up to the level
4568 * supported by the host -- anything that requires EXCP_ATOMIC will not
4569 * be atomic with respect to an external process.
4570 */
4571 if (!(cpu->tcg_cflags & CF_PARALLEL)) {
4572 cpu->tcg_cflags |= CF_PARALLEL;
4573 tb_flush(cpu);
4574 }
4575
4576 if (shmaddr)
4577 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg);
4578 else {
4579 abi_ulong mmap_start;
4580
4581 /* In order to use the host shmat, we need to honor host SHMLBA. */
4582 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
4583
4584 if (mmap_start == -1) {
4585 errno = ENOMEM;
4586 host_raddr = (void *)-1;
4587 } else
4588 host_raddr = shmat(shmid, g2h_untagged(mmap_start),
4589 shmflg | SHM_REMAP);
4590 }
4591
4592 if (host_raddr == (void *)-1) {
4593 mmap_unlock();
4594 return get_errno((long)host_raddr);
4595 }
4596 raddr=h2g((unsigned long)host_raddr);
4597
4598 page_set_flags(raddr, raddr + shm_info.shm_segsz - 1,
4599 PAGE_VALID | PAGE_RESET | PAGE_READ |
4600 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
4601
4602 for (i = 0; i < N_SHM_REGIONS; i++) {
4603 if (!shm_regions[i].in_use) {
4604 shm_regions[i].in_use = true;
4605 shm_regions[i].start = raddr;
4606 shm_regions[i].size = shm_info.shm_segsz;
4607 break;
4608 }
4609 }
4610
4611 mmap_unlock();
4612 return raddr;
4613
4614 }
4615
4616 static inline abi_long do_shmdt(abi_ulong shmaddr)
4617 {
4618 int i;
4619 abi_long rv;
4620
4621 /* shmdt pointers are always untagged */
4622
4623 mmap_lock();
4624
4625 for (i = 0; i < N_SHM_REGIONS; ++i) {
4626 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4627 shm_regions[i].in_use = false;
4628 page_set_flags(shmaddr, shmaddr + shm_regions[i].size - 1, 0);
4629 break;
4630 }
4631 }
4632 rv = get_errno(shmdt(g2h_untagged(shmaddr)));
4633
4634 mmap_unlock();
4635
4636 return rv;
4637 }
4638
4639 #ifdef TARGET_NR_ipc
4640 /* ??? This only works with linear mappings. */
4641 /* do_ipc() must return target values and target errnos. */
4642 static abi_long do_ipc(CPUArchState *cpu_env,
4643 unsigned int call, abi_long first,
4644 abi_long second, abi_long third,
4645 abi_long ptr, abi_long fifth)
4646 {
4647 int version;
4648 abi_long ret = 0;
4649
4650 version = call >> 16;
4651 call &= 0xffff;
4652
4653 switch (call) {
4654 case IPCOP_semop:
4655 ret = do_semtimedop(first, ptr, second, 0, false);
4656 break;
4657 case IPCOP_semtimedop:
4658 /*
4659 * The s390 sys_ipc variant has only five parameters instead of six
4660 * (as for default variant) and the only difference is the handling of
4661 * SEMTIMEDOP where on s390 the third parameter is used as a pointer
4662 * to a struct timespec where the generic variant uses fifth parameter.
4663 */
4664 #if defined(TARGET_S390X)
4665 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64);
4666 #else
4667 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64);
4668 #endif
4669 break;
4670
4671 case IPCOP_semget:
4672 ret = get_errno(semget(first, second, third));
4673 break;
4674
4675 case IPCOP_semctl: {
4676 /* The semun argument to semctl is passed by value, so dereference the
4677 * ptr argument. */
4678 abi_ulong atptr;
4679 get_user_ual(atptr, ptr);
4680 ret = do_semctl(first, second, third, atptr);
4681 break;
4682 }
4683
4684 case IPCOP_msgget:
4685 ret = get_errno(msgget(first, second));
4686 break;
4687
4688 case IPCOP_msgsnd:
4689 ret = do_msgsnd(first, ptr, second, third);
4690 break;
4691
4692 case IPCOP_msgctl:
4693 ret = do_msgctl(first, second, ptr);
4694 break;
4695
4696 case IPCOP_msgrcv:
4697 switch (version) {
4698 case 0:
4699 {
4700 struct target_ipc_kludge {
4701 abi_long msgp;
4702 abi_long msgtyp;
4703 } *tmp;
4704
4705 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4706 ret = -TARGET_EFAULT;
4707 break;
4708 }
4709
4710 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4711
4712 unlock_user_struct(tmp, ptr, 0);
4713 break;
4714 }
4715 default:
4716 ret = do_msgrcv(first, ptr, second, fifth, third);
4717 }
4718 break;
4719
4720 case IPCOP_shmat:
4721 switch (version) {
4722 default:
4723 {
4724 abi_ulong raddr;
4725 raddr = do_shmat(cpu_env, first, ptr, second);
4726 if (is_error(raddr))
4727 return get_errno(raddr);
4728 if (put_user_ual(raddr, third))
4729 return -TARGET_EFAULT;
4730 break;
4731 }
4732 case 1:
4733 ret = -TARGET_EINVAL;
4734 break;
4735 }
4736 break;
4737 case IPCOP_shmdt:
4738 ret = do_shmdt(ptr);
4739 break;
4740
4741 case IPCOP_shmget:
4742 /* IPC_* flag values are the same on all linux platforms */
4743 ret = get_errno(shmget(first, second, third));
4744 break;
4745
4746 /* IPC_* and SHM_* command values are the same on all linux platforms */
4747 case IPCOP_shmctl:
4748 ret = do_shmctl(first, second, ptr);
4749 break;
4750 default:
4751 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
4752 call, version);
4753 ret = -TARGET_ENOSYS;
4754 break;
4755 }
4756 return ret;
4757 }
4758 #endif
4759
4760 /* kernel structure types definitions */
4761
4762 #define STRUCT(name, ...) STRUCT_ ## name,
4763 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4764 enum {
4765 #include "syscall_types.h"
4766 STRUCT_MAX
4767 };
4768 #undef STRUCT
4769 #undef STRUCT_SPECIAL
4770
4771 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4772 #define STRUCT_SPECIAL(name)
4773 #include "syscall_types.h"
4774 #undef STRUCT
4775 #undef STRUCT_SPECIAL
4776
4777 #define MAX_STRUCT_SIZE 4096
4778
4779 #ifdef CONFIG_FIEMAP
4780 /* So fiemap access checks don't overflow on 32 bit systems.
4781 * This is very slightly smaller than the limit imposed by
4782 * the underlying kernel.
4783 */
4784 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4785 / sizeof(struct fiemap_extent))
4786
4787 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4788 int fd, int cmd, abi_long arg)
4789 {
4790 /* The parameter for this ioctl is a struct fiemap followed
4791 * by an array of struct fiemap_extent whose size is set
4792 * in fiemap->fm_extent_count. The array is filled in by the
4793 * ioctl.
4794 */
4795 int target_size_in, target_size_out;
4796 struct fiemap *fm;
4797 const argtype *arg_type = ie->arg_type;
4798 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4799 void *argptr, *p;
4800 abi_long ret;
4801 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4802 uint32_t outbufsz;
4803 int free_fm = 0;
4804
4805 assert(arg_type[0] == TYPE_PTR);
4806 assert(ie->access == IOC_RW);
4807 arg_type++;
4808 target_size_in = thunk_type_size(arg_type, 0);
4809 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4810 if (!argptr) {
4811 return -TARGET_EFAULT;
4812 }
4813 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4814 unlock_user(argptr, arg, 0);
4815 fm = (struct fiemap *)buf_temp;
4816 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4817 return -TARGET_EINVAL;
4818 }
4819
4820 outbufsz = sizeof (*fm) +
4821 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4822
4823 if (outbufsz > MAX_STRUCT_SIZE) {
4824 /* We can't fit all the extents into the fixed size buffer.
4825 * Allocate one that is large enough and use it instead.
4826 */
4827 fm = g_try_malloc(outbufsz);
4828 if (!fm) {
4829 return -TARGET_ENOMEM;
4830 }
4831 memcpy(fm, buf_temp, sizeof(struct fiemap));
4832 free_fm = 1;
4833 }
4834 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4835 if (!is_error(ret)) {
4836 target_size_out = target_size_in;
4837 /* An extent_count of 0 means we were only counting the extents
4838 * so there are no structs to copy
4839 */
4840 if (fm->fm_extent_count != 0) {
4841 target_size_out += fm->fm_mapped_extents * extent_size;
4842 }
4843 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4844 if (!argptr) {
4845 ret = -TARGET_EFAULT;
4846 } else {
4847 /* Convert the struct fiemap */
4848 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4849 if (fm->fm_extent_count != 0) {
4850 p = argptr + target_size_in;
4851 /* ...and then all the struct fiemap_extents */
4852 for (i = 0; i < fm->fm_mapped_extents; i++) {
4853 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4854 THUNK_TARGET);
4855 p += extent_size;
4856 }
4857 }
4858 unlock_user(argptr, arg, target_size_out);
4859 }
4860 }
4861 if (free_fm) {
4862 g_free(fm);
4863 }
4864 return ret;
4865 }
4866 #endif
4867
4868 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4869 int fd, int cmd, abi_long arg)
4870 {
4871 const argtype *arg_type = ie->arg_type;
4872 int target_size;
4873 void *argptr;
4874 int ret;
4875 struct ifconf *host_ifconf;
4876 uint32_t outbufsz;
4877 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4878 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) };
4879 int target_ifreq_size;
4880 int nb_ifreq;
4881 int free_buf = 0;
4882 int i;
4883 int target_ifc_len;
4884 abi_long target_ifc_buf;
4885 int host_ifc_len;
4886 char *host_ifc_buf;
4887
4888 assert(arg_type[0] == TYPE_PTR);
4889 assert(ie->access == IOC_RW);
4890
4891 arg_type++;
4892 target_size = thunk_type_size(arg_type, 0);
4893
4894 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4895 if (!argptr)
4896 return -TARGET_EFAULT;
4897 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4898 unlock_user(argptr, arg, 0);
4899
4900 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4901 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4902 target_ifreq_size = thunk_type_size(ifreq_max_type, 0);
4903
4904 if (target_ifc_buf != 0) {
4905 target_ifc_len = host_ifconf->ifc_len;
4906 nb_ifreq = target_ifc_len / target_ifreq_size;
4907 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4908
4909 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4910 if (outbufsz > MAX_STRUCT_SIZE) {
4911 /*
4912 * We can't fit all the extents into the fixed size buffer.
4913 * Allocate one that is large enough and use it instead.
4914 */
4915 host_ifconf = g_try_malloc(outbufsz);
4916 if (!host_ifconf) {
4917 return -TARGET_ENOMEM;
4918 }
4919 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4920 free_buf = 1;
4921 }
4922 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4923
4924 host_ifconf->ifc_len = host_ifc_len;
4925 } else {
4926 host_ifc_buf = NULL;
4927 }
4928 host_ifconf->ifc_buf = host_ifc_buf;
4929
4930 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4931 if (!is_error(ret)) {
4932 /* convert host ifc_len to target ifc_len */
4933
4934 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4935 target_ifc_len = nb_ifreq * target_ifreq_size;
4936 host_ifconf->ifc_len = target_ifc_len;
4937
4938 /* restore target ifc_buf */
4939
4940 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4941
4942 /* copy struct ifconf to target user */
4943
4944 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4945 if (!argptr)
4946 return -TARGET_EFAULT;
4947 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4948 unlock_user(argptr, arg, target_size);
4949
4950 if (target_ifc_buf != 0) {
4951 /* copy ifreq[] to target user */
4952 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4953 for (i = 0; i < nb_ifreq ; i++) {
4954 thunk_convert(argptr + i * target_ifreq_size,
4955 host_ifc_buf + i * sizeof(struct ifreq),
4956 ifreq_arg_type, THUNK_TARGET);
4957 }
4958 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4959 }
4960 }
4961
4962 if (free_buf) {
4963 g_free(host_ifconf);
4964 }
4965
4966 return ret;
4967 }
4968
4969 #if defined(CONFIG_USBFS)
4970 #if HOST_LONG_BITS > 64
4971 #error USBDEVFS thunks do not support >64 bit hosts yet.
4972 #endif
4973 struct live_urb {
4974 uint64_t target_urb_adr;
4975 uint64_t target_buf_adr;
4976 char *target_buf_ptr;
4977 struct usbdevfs_urb host_urb;
4978 };
4979
4980 static GHashTable *usbdevfs_urb_hashtable(void)
4981 {
4982 static GHashTable *urb_hashtable;
4983
4984 if (!urb_hashtable) {
4985 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4986 }
4987 return urb_hashtable;
4988 }
4989
4990 static void urb_hashtable_insert(struct live_urb *urb)
4991 {
4992 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4993 g_hash_table_insert(urb_hashtable, urb, urb);
4994 }
4995
4996 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4997 {
4998 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4999 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
5000 }
5001
5002 static void urb_hashtable_remove(struct live_urb *urb)
5003 {
5004 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
5005 g_hash_table_remove(urb_hashtable, urb);
5006 }
5007
5008 static abi_long
5009 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
5010 int fd, int cmd, abi_long arg)
5011 {
5012 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
5013 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
5014 struct live_urb *lurb;
5015 void *argptr;
5016 uint64_t hurb;
5017 int target_size;
5018 uintptr_t target_urb_adr;
5019 abi_long ret;
5020
5021 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
5022
5023 memset(buf_temp, 0, sizeof(uint64_t));
5024 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5025 if (is_error(ret)) {
5026 return ret;
5027 }
5028
5029 memcpy(&hurb, buf_temp, sizeof(uint64_t));
5030 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
5031 if (!lurb->target_urb_adr) {
5032 return -TARGET_EFAULT;
5033 }
5034 urb_hashtable_remove(lurb);
5035 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
5036 lurb->host_urb.buffer_length);
5037 lurb->target_buf_ptr = NULL;
5038
5039 /* restore the guest buffer pointer */
5040 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
5041
5042 /* update the guest urb struct */
5043 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
5044 if (!argptr) {
5045 g_free(lurb);
5046 return -TARGET_EFAULT;
5047 }
5048 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
5049 unlock_user(argptr, lurb->target_urb_adr, target_size);
5050
5051 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
5052 /* write back the urb handle */
5053 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5054 if (!argptr) {
5055 g_free(lurb);
5056 return -TARGET_EFAULT;
5057 }
5058
5059 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
5060 target_urb_adr = lurb->target_urb_adr;
5061 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
5062 unlock_user(argptr, arg, target_size);
5063
5064 g_free(lurb);
5065 return ret;
5066 }
5067
5068 static abi_long
5069 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
5070 uint8_t *buf_temp __attribute__((unused)),
5071 int fd, int cmd, abi_long arg)
5072 {
5073 struct live_urb *lurb;
5074
5075 /* map target address back to host URB with metadata. */
5076 lurb = urb_hashtable_lookup(arg);
5077 if (!lurb) {
5078 return -TARGET_EFAULT;
5079 }
5080 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5081 }
5082
5083 static abi_long
5084 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
5085 int fd, int cmd, abi_long arg)
5086 {
5087 const argtype *arg_type = ie->arg_type;
5088 int target_size;
5089 abi_long ret;
5090 void *argptr;
5091 int rw_dir;
5092 struct live_urb *lurb;
5093
5094 /*
5095 * each submitted URB needs to map to a unique ID for the
5096 * kernel, and that unique ID needs to be a pointer to
5097 * host memory. hence, we need to malloc for each URB.
5098 * isochronous transfers have a variable length struct.
5099 */
5100 arg_type++;
5101 target_size = thunk_type_size(arg_type, THUNK_TARGET);
5102
5103 /* construct host copy of urb and metadata */
5104 lurb = g_try_new0(struct live_urb, 1);
5105 if (!lurb) {
5106 return -TARGET_ENOMEM;
5107 }
5108
5109 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5110 if (!argptr) {
5111 g_free(lurb);
5112 return -TARGET_EFAULT;
5113 }
5114 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
5115 unlock_user(argptr, arg, 0);
5116
5117 lurb->target_urb_adr = arg;
5118 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
5119
5120 /* buffer space used depends on endpoint type so lock the entire buffer */
5121 /* control type urbs should check the buffer contents for true direction */
5122 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
5123 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
5124 lurb->host_urb.buffer_length, 1);
5125 if (lurb->target_buf_ptr == NULL) {
5126 g_free(lurb);
5127 return -TARGET_EFAULT;
5128 }
5129
5130 /* update buffer pointer in host copy */
5131 lurb->host_urb.buffer = lurb->target_buf_ptr;
5132
5133 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5134 if (is_error(ret)) {
5135 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
5136 g_free(lurb);
5137 } else {
5138 urb_hashtable_insert(lurb);
5139 }
5140
5141 return ret;
5142 }
5143 #endif /* CONFIG_USBFS */
5144
5145 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5146 int cmd, abi_long arg)
5147 {
5148 void *argptr;
5149 struct dm_ioctl *host_dm;
5150 abi_long guest_data;
5151 uint32_t guest_data_size;
5152 int target_size;
5153 const argtype *arg_type = ie->arg_type;
5154 abi_long ret;
5155 void *big_buf = NULL;
5156 char *host_data;
5157
5158 arg_type++;
5159 target_size = thunk_type_size(arg_type, 0);
5160 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5161 if (!argptr) {
5162 ret = -TARGET_EFAULT;
5163 goto out;
5164 }
5165 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5166 unlock_user(argptr, arg, 0);
5167
5168 /* buf_temp is too small, so fetch things into a bigger buffer */
5169 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5170 memcpy(big_buf, buf_temp, target_size);
5171 buf_temp = big_buf;
5172 host_dm = big_buf;
5173
5174 guest_data = arg + host_dm->data_start;
5175 if ((guest_data - arg) < 0) {
5176 ret = -TARGET_EINVAL;
5177 goto out;
5178 }
5179 guest_data_size = host_dm->data_size - host_dm->data_start;
5180 host_data = (char*)host_dm + host_dm->data_start;
5181
5182 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5183 if (!argptr) {
5184 ret = -TARGET_EFAULT;
5185 goto out;
5186 }
5187
5188 switch (ie->host_cmd) {
5189 case DM_REMOVE_ALL:
5190 case DM_LIST_DEVICES:
5191 case DM_DEV_CREATE:
5192 case DM_DEV_REMOVE:
5193 case DM_DEV_SUSPEND:
5194 case DM_DEV_STATUS:
5195 case DM_DEV_WAIT:
5196 case DM_TABLE_STATUS:
5197 case DM_TABLE_CLEAR:
5198 case DM_TABLE_DEPS:
5199 case DM_LIST_VERSIONS:
5200 /* no input data */
5201 break;
5202 case DM_DEV_RENAME:
5203 case DM_DEV_SET_GEOMETRY:
5204 /* data contains only strings */
5205 memcpy(host_data, argptr, guest_data_size);
5206 break;
5207 case DM_TARGET_MSG:
5208 memcpy(host_data, argptr, guest_data_size);
5209 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5210 break;
5211 case DM_TABLE_LOAD:
5212 {
5213 void *gspec = argptr;
5214 void *cur_data = host_data;
5215 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5216 int spec_size = thunk_type_size(arg_type, 0);
5217 int i;
5218
5219 for (i = 0; i < host_dm->target_count; i++) {
5220 struct dm_target_spec *spec = cur_data;
5221 uint32_t next;
5222 int slen;
5223
5224 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
5225 slen = strlen((char*)gspec + spec_size) + 1;
5226 next = spec->next;
5227 spec->next = sizeof(*spec) + slen;
5228 strcpy((char*)&spec[1], gspec + spec_size);
5229 gspec += next;
5230 cur_data += spec->next;
5231 }
5232 break;
5233 }
5234 default:
5235 ret = -TARGET_EINVAL;
5236 unlock_user(argptr, guest_data, 0);
5237 goto out;
5238 }
5239 unlock_user(argptr, guest_data, 0);
5240
5241 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5242 if (!is_error(ret)) {
5243 guest_data = arg + host_dm->data_start;
5244 guest_data_size = host_dm->data_size - host_dm->data_start;
5245 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5246 switch (ie->host_cmd) {
5247 case DM_REMOVE_ALL:
5248 case DM_DEV_CREATE:
5249 case DM_DEV_REMOVE:
5250 case DM_DEV_RENAME:
5251 case DM_DEV_SUSPEND:
5252 case DM_DEV_STATUS:
5253 case DM_TABLE_LOAD:
5254 case DM_TABLE_CLEAR:
5255 case DM_TARGET_MSG:
5256 case DM_DEV_SET_GEOMETRY:
5257 /* no return data */
5258 break;
5259 case DM_LIST_DEVICES:
5260 {
5261 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5262 uint32_t remaining_data = guest_data_size;
5263 void *cur_data = argptr;
5264 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5265 int nl_size = 12; /* can't use thunk_size due to alignment */
5266
5267 while (1) {
5268 uint32_t next = nl->next;
5269 if (next) {
5270 nl->next = nl_size + (strlen(nl->name) + 1);
5271 }
5272 if (remaining_data < nl->next) {
5273 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5274 break;
5275 }
5276 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
5277 strcpy(cur_data + nl_size, nl->name);
5278 cur_data += nl->next;
5279 remaining_data -= nl->next;
5280 if (!next) {
5281 break;
5282 }
5283 nl = (void*)nl + next;
5284 }
5285 break;
5286 }
5287 case DM_DEV_WAIT:
5288 case DM_TABLE_STATUS:
5289 {
5290 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5291 void *cur_data = argptr;
5292 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5293 int spec_size = thunk_type_size(arg_type, 0);
5294 int i;
5295
5296 for (i = 0; i < host_dm->target_count; i++) {
5297 uint32_t next = spec->next;
5298 int slen = strlen((char*)&spec[1]) + 1;
5299 spec->next = (cur_data - argptr) + spec_size + slen;
5300 if (guest_data_size < spec->next) {
5301 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5302 break;
5303 }
5304 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5305 strcpy(cur_data + spec_size, (char*)&spec[1]);
5306 cur_data = argptr + spec->next;
5307 spec = (void*)host_dm + host_dm->data_start + next;
5308 }
5309 break;
5310 }
5311 case DM_TABLE_DEPS:
5312 {
5313 void *hdata = (void*)host_dm + host_dm->data_start;
5314 int count = *(uint32_t*)hdata;
5315 uint64_t *hdev = hdata + 8;
5316 uint64_t *gdev = argptr + 8;
5317 int i;
5318
5319 *(uint32_t*)argptr = tswap32(count);
5320 for (i = 0; i < count; i++) {
5321 *gdev = tswap64(*hdev);
5322 gdev++;
5323 hdev++;
5324 }
5325 break;
5326 }
5327 case DM_LIST_VERSIONS:
5328 {
5329 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5330 uint32_t remaining_data = guest_data_size;
5331 void *cur_data = argptr;
5332 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5333 int vers_size = thunk_type_size(arg_type, 0);
5334
5335 while (1) {
5336 uint32_t next = vers->next;
5337 if (next) {
5338 vers->next = vers_size + (strlen(vers->name) + 1);
5339 }
5340 if (remaining_data < vers->next) {
5341 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5342 break;
5343 }
5344 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5345 strcpy(cur_data + vers_size, vers->name);
5346 cur_data += vers->next;
5347 remaining_data -= vers->next;
5348 if (!next) {
5349 break;
5350 }
5351 vers = (void*)vers + next;
5352 }
5353 break;
5354 }
5355 default:
5356 unlock_user(argptr, guest_data, 0);
5357 ret = -TARGET_EINVAL;
5358 goto out;
5359 }
5360 unlock_user(argptr, guest_data, guest_data_size);
5361
5362 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5363 if (!argptr) {
5364 ret = -TARGET_EFAULT;
5365 goto out;
5366 }
5367 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5368 unlock_user(argptr, arg, target_size);
5369 }
5370 out:
5371 g_free(big_buf);
5372 return ret;
5373 }
5374
5375 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5376 int cmd, abi_long arg)
5377 {
5378 void *argptr;
5379 int target_size;
5380 const argtype *arg_type = ie->arg_type;
5381 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5382 abi_long ret;
5383
5384 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5385 struct blkpg_partition host_part;
5386
5387 /* Read and convert blkpg */
5388 arg_type++;
5389 target_size = thunk_type_size(arg_type, 0);
5390 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5391 if (!argptr) {
5392 ret = -TARGET_EFAULT;
5393 goto out;
5394 }
5395 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5396 unlock_user(argptr, arg, 0);
5397
5398 switch (host_blkpg->op) {
5399 case BLKPG_ADD_PARTITION:
5400 case BLKPG_DEL_PARTITION:
5401 /* payload is struct blkpg_partition */
5402 break;
5403 default:
5404 /* Unknown opcode */
5405 ret = -TARGET_EINVAL;
5406 goto out;
5407 }
5408
5409 /* Read and convert blkpg->data */
5410 arg = (abi_long)(uintptr_t)host_blkpg->data;
5411 target_size = thunk_type_size(part_arg_type, 0);
5412 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5413 if (!argptr) {
5414 ret = -TARGET_EFAULT;
5415 goto out;
5416 }
5417 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5418 unlock_user(argptr, arg, 0);
5419
5420 /* Swizzle the data pointer to our local copy and call! */
5421 host_blkpg->data = &host_part;
5422 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5423
5424 out:
5425 return ret;
5426 }
5427
5428 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5429 int fd, int cmd, abi_long arg)
5430 {
5431 const argtype *arg_type = ie->arg_type;
5432 const StructEntry *se;
5433 const argtype *field_types;
5434 const int *dst_offsets, *src_offsets;
5435 int target_size;
5436 void *argptr;
5437 abi_ulong *target_rt_dev_ptr = NULL;
5438 unsigned long *host_rt_dev_ptr = NULL;
5439 abi_long ret;
5440 int i;
5441
5442 assert(ie->access == IOC_W);
5443 assert(*arg_type == TYPE_PTR);
5444 arg_type++;
5445 assert(*arg_type == TYPE_STRUCT);
5446 target_size = thunk_type_size(arg_type, 0);
5447 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5448 if (!argptr) {
5449 return -TARGET_EFAULT;
5450 }
5451 arg_type++;
5452 assert(*arg_type == (int)STRUCT_rtentry);
5453 se = struct_entries + *arg_type++;
5454 assert(se->convert[0] == NULL);
5455 /* convert struct here to be able to catch rt_dev string */
5456 field_types = se->field_types;
5457 dst_offsets = se->field_offsets[THUNK_HOST];
5458 src_offsets = se->field_offsets[THUNK_TARGET];
5459 for (i = 0; i < se->nb_fields; i++) {
5460 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5461 assert(*field_types == TYPE_PTRVOID);
5462 target_rt_dev_ptr = argptr + src_offsets[i];
5463 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5464 if (*target_rt_dev_ptr != 0) {
5465 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5466 tswapal(*target_rt_dev_ptr));
5467 if (!*host_rt_dev_ptr) {
5468 unlock_user(argptr, arg, 0);
5469 return -TARGET_EFAULT;
5470 }
5471 } else {
5472 *host_rt_dev_ptr = 0;
5473 }
5474 field_types++;
5475 continue;
5476 }
5477 field_types = thunk_convert(buf_temp + dst_offsets[i],
5478 argptr + src_offsets[i],
5479 field_types, THUNK_HOST);
5480 }
5481 unlock_user(argptr, arg, 0);
5482
5483 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5484
5485 assert(host_rt_dev_ptr != NULL);
5486 assert(target_rt_dev_ptr != NULL);
5487 if (*host_rt_dev_ptr != 0) {
5488 unlock_user((void *)*host_rt_dev_ptr,
5489 *target_rt_dev_ptr, 0);
5490 }
5491 return ret;
5492 }
5493
5494 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5495 int fd, int cmd, abi_long arg)
5496 {
5497 int sig = target_to_host_signal(arg);
5498 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5499 }
5500
5501 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
5502 int fd, int cmd, abi_long arg)
5503 {
5504 struct timeval tv;
5505 abi_long ret;
5506
5507 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
5508 if (is_error(ret)) {
5509 return ret;
5510 }
5511
5512 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
5513 if (copy_to_user_timeval(arg, &tv)) {
5514 return -TARGET_EFAULT;
5515 }
5516 } else {
5517 if (copy_to_user_timeval64(arg, &tv)) {
5518 return -TARGET_EFAULT;
5519 }
5520 }
5521
5522 return ret;
5523 }
5524
5525 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
5526 int fd, int cmd, abi_long arg)
5527 {
5528 struct timespec ts;
5529 abi_long ret;
5530
5531 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
5532 if (is_error(ret)) {
5533 return ret;
5534 }
5535
5536 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5537 if (host_to_target_timespec(arg, &ts)) {
5538 return -TARGET_EFAULT;
5539 }
5540 } else{
5541 if (host_to_target_timespec64(arg, &ts)) {
5542 return -TARGET_EFAULT;
5543 }
5544 }
5545
5546 return ret;
5547 }
5548
5549 #ifdef TIOCGPTPEER
5550 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5551 int fd, int cmd, abi_long arg)
5552 {
5553 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5554 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5555 }
5556 #endif
5557
5558 #ifdef HAVE_DRM_H
5559
5560 static void unlock_drm_version(struct drm_version *host_ver,
5561 struct target_drm_version *target_ver,
5562 bool copy)
5563 {
5564 unlock_user(host_ver->name, target_ver->name,
5565 copy ? host_ver->name_len : 0);
5566 unlock_user(host_ver->date, target_ver->date,
5567 copy ? host_ver->date_len : 0);
5568 unlock_user(host_ver->desc, target_ver->desc,
5569 copy ? host_ver->desc_len : 0);
5570 }
5571
5572 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
5573 struct target_drm_version *target_ver)
5574 {
5575 memset(host_ver, 0, sizeof(*host_ver));
5576
5577 __get_user(host_ver->name_len, &target_ver->name_len);
5578 if (host_ver->name_len) {
5579 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
5580 target_ver->name_len, 0);
5581 if (!host_ver->name) {
5582 return -EFAULT;
5583 }
5584 }
5585
5586 __get_user(host_ver->date_len, &target_ver->date_len);
5587 if (host_ver->date_len) {
5588 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
5589 target_ver->date_len, 0);
5590 if (!host_ver->date) {
5591 goto err;
5592 }
5593 }
5594
5595 __get_user(host_ver->desc_len, &target_ver->desc_len);
5596 if (host_ver->desc_len) {
5597 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
5598 target_ver->desc_len, 0);
5599 if (!host_ver->desc) {
5600 goto err;
5601 }
5602 }
5603
5604 return 0;
5605 err:
5606 unlock_drm_version(host_ver, target_ver, false);
5607 return -EFAULT;
5608 }
5609
5610 static inline void host_to_target_drmversion(
5611 struct target_drm_version *target_ver,
5612 struct drm_version *host_ver)
5613 {
5614 __put_user(host_ver->version_major, &target_ver->version_major);
5615 __put_user(host_ver->version_minor, &target_ver->version_minor);
5616 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
5617 __put_user(host_ver->name_len, &target_ver->name_len);
5618 __put_user(host_ver->date_len, &target_ver->date_len);
5619 __put_user(host_ver->desc_len, &target_ver->desc_len);
5620 unlock_drm_version(host_ver, target_ver, true);
5621 }
5622
5623 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
5624 int fd, int cmd, abi_long arg)
5625 {
5626 struct drm_version *ver;
5627 struct target_drm_version *target_ver;
5628 abi_long ret;
5629
5630 switch (ie->host_cmd) {
5631 case DRM_IOCTL_VERSION:
5632 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
5633 return -TARGET_EFAULT;
5634 }
5635 ver = (struct drm_version *)buf_temp;
5636 ret = target_to_host_drmversion(ver, target_ver);
5637 if (!is_error(ret)) {
5638 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
5639 if (is_error(ret)) {
5640 unlock_drm_version(ver, target_ver, false);
5641 } else {
5642 host_to_target_drmversion(target_ver, ver);
5643 }
5644 }
5645 unlock_user_struct(target_ver, arg, 0);
5646 return ret;
5647 }
5648 return -TARGET_ENOSYS;
5649 }
5650
5651 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie,
5652 struct drm_i915_getparam *gparam,
5653 int fd, abi_long arg)
5654 {
5655 abi_long ret;
5656 int value;
5657 struct target_drm_i915_getparam *target_gparam;
5658
5659 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) {
5660 return -TARGET_EFAULT;
5661 }
5662
5663 __get_user(gparam->param, &target_gparam->param);
5664 gparam->value = &value;
5665 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam));
5666 put_user_s32(value, target_gparam->value);
5667
5668 unlock_user_struct(target_gparam, arg, 0);
5669 return ret;
5670 }
5671
5672 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp,
5673 int fd, int cmd, abi_long arg)
5674 {
5675 switch (ie->host_cmd) {
5676 case DRM_IOCTL_I915_GETPARAM:
5677 return do_ioctl_drm_i915_getparam(ie,
5678 (struct drm_i915_getparam *)buf_temp,
5679 fd, arg);
5680 default:
5681 return -TARGET_ENOSYS;
5682 }
5683 }
5684
5685 #endif
5686
5687 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp,
5688 int fd, int cmd, abi_long arg)
5689 {
5690 struct tun_filter *filter = (struct tun_filter *)buf_temp;
5691 struct tun_filter *target_filter;
5692 char *target_addr;
5693
5694 assert(ie->access == IOC_W);
5695
5696 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1);
5697 if (!target_filter) {
5698 return -TARGET_EFAULT;
5699 }
5700 filter->flags = tswap16(target_filter->flags);
5701 filter->count = tswap16(target_filter->count);
5702 unlock_user(target_filter, arg, 0);
5703
5704 if (filter->count) {
5705 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN >
5706 MAX_STRUCT_SIZE) {
5707 return -TARGET_EFAULT;
5708 }
5709
5710 target_addr = lock_user(VERIFY_READ,
5711 arg + offsetof(struct tun_filter, addr),
5712 filter->count * ETH_ALEN, 1);
5713 if (!target_addr) {
5714 return -TARGET_EFAULT;
5715 }
5716 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN);
5717 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0);
5718 }
5719
5720 return get_errno(safe_ioctl(fd, ie->host_cmd, filter));
5721 }
5722
5723 IOCTLEntry ioctl_entries[] = {
5724 #define IOCTL(cmd, access, ...) \
5725 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5726 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5727 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5728 #define IOCTL_IGNORE(cmd) \
5729 { TARGET_ ## cmd, 0, #cmd },
5730 #include "ioctls.h"
5731 { 0, 0, },
5732 };
5733
5734 /* ??? Implement proper locking for ioctls. */
5735 /* do_ioctl() Must return target values and target errnos. */
5736 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5737 {
5738 const IOCTLEntry *ie;
5739 const argtype *arg_type;
5740 abi_long ret;
5741 uint8_t buf_temp[MAX_STRUCT_SIZE];
5742 int target_size;
5743 void *argptr;
5744
5745 ie = ioctl_entries;
5746 for(;;) {
5747 if (ie->target_cmd == 0) {
5748 qemu_log_mask(
5749 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5750 return -TARGET_ENOTTY;
5751 }
5752 if (ie->target_cmd == cmd)
5753 break;
5754 ie++;
5755 }
5756 arg_type = ie->arg_type;
5757 if (ie->do_ioctl) {
5758 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5759 } else if (!ie->host_cmd) {
5760 /* Some architectures define BSD ioctls in their headers
5761 that are not implemented in Linux. */
5762 return -TARGET_ENOTTY;
5763 }
5764
5765 switch(arg_type[0]) {
5766 case TYPE_NULL:
5767 /* no argument */
5768 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5769 break;
5770 case TYPE_PTRVOID:
5771 case TYPE_INT:
5772 case TYPE_LONG:
5773 case TYPE_ULONG:
5774 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5775 break;
5776 case TYPE_PTR:
5777 arg_type++;
5778 target_size = thunk_type_size(arg_type, 0);
5779 switch(ie->access) {
5780 case IOC_R:
5781 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5782 if (!is_error(ret)) {
5783 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5784 if (!argptr)
5785 return -TARGET_EFAULT;
5786 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5787 unlock_user(argptr, arg, target_size);
5788 }
5789 break;
5790 case IOC_W:
5791 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5792 if (!argptr)
5793 return -TARGET_EFAULT;
5794 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5795 unlock_user(argptr, arg, 0);
5796 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5797 break;
5798 default:
5799 case IOC_RW:
5800 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5801 if (!argptr)
5802 return -TARGET_EFAULT;
5803 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5804 unlock_user(argptr, arg, 0);
5805 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5806 if (!is_error(ret)) {
5807 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5808 if (!argptr)
5809 return -TARGET_EFAULT;
5810 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5811 unlock_user(argptr, arg, target_size);
5812 }
5813 break;
5814 }
5815 break;
5816 default:
5817 qemu_log_mask(LOG_UNIMP,
5818 "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5819 (long)cmd, arg_type[0]);
5820 ret = -TARGET_ENOTTY;
5821 break;
5822 }
5823 return ret;
5824 }
5825
5826 static const bitmask_transtbl iflag_tbl[] = {
5827 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5828 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5829 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5830 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5831 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5832 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5833 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5834 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5835 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5836 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5837 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5838 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5839 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5840 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5841 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
5842 { 0, 0, 0, 0 }
5843 };
5844
5845 static const bitmask_transtbl oflag_tbl[] = {
5846 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5847 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5848 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5849 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5850 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5851 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5852 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5853 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5854 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5855 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5856 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5857 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5858 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5859 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5860 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5861 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5862 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5863 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5864 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5865 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5866 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5867 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5868 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5869 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5870 { 0, 0, 0, 0 }
5871 };
5872
5873 static const bitmask_transtbl cflag_tbl[] = {
5874 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5875 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5876 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5877 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5878 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5879 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5880 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5881 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5882 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5883 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5884 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5885 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5886 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5887 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5888 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5889 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5890 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5891 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5892 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5893 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5894 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5895 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5896 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5897 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5898 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5899 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5900 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5901 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5902 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5903 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5904 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5905 { 0, 0, 0, 0 }
5906 };
5907
5908 static const bitmask_transtbl lflag_tbl[] = {
5909 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5910 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5911 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5912 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5913 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5914 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5915 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5916 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5917 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5918 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5919 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5920 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5921 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5922 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5923 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5924 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
5925 { 0, 0, 0, 0 }
5926 };
5927
5928 static void target_to_host_termios (void *dst, const void *src)
5929 {
5930 struct host_termios *host = dst;
5931 const struct target_termios *target = src;
5932
5933 host->c_iflag =
5934 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5935 host->c_oflag =
5936 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5937 host->c_cflag =
5938 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5939 host->c_lflag =
5940 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5941 host->c_line = target->c_line;
5942
5943 memset(host->c_cc, 0, sizeof(host->c_cc));
5944 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5945 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5946 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5947 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5948 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5949 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5950 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5951 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5952 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5953 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5954 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5955 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5956 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5957 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5958 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5959 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5960 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5961 }
5962
5963 static void host_to_target_termios (void *dst, const void *src)
5964 {
5965 struct target_termios *target = dst;
5966 const struct host_termios *host = src;
5967
5968 target->c_iflag =
5969 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5970 target->c_oflag =
5971 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5972 target->c_cflag =
5973 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5974 target->c_lflag =
5975 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5976 target->c_line = host->c_line;
5977
5978 memset(target->c_cc, 0, sizeof(target->c_cc));
5979 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5980 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5981 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5982 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5983 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5984 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5985 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5986 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5987 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5988 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5989 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5990 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5991 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5992 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5993 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5994 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5995 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5996 }
5997
5998 static const StructEntry struct_termios_def = {
5999 .convert = { host_to_target_termios, target_to_host_termios },
6000 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
6001 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
6002 .print = print_termios,
6003 };
6004
6005 static const bitmask_transtbl mmap_flags_tbl[] = {
6006 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
6007 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
6008 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
6009 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
6010 MAP_ANONYMOUS, MAP_ANONYMOUS },
6011 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
6012 MAP_GROWSDOWN, MAP_GROWSDOWN },
6013 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
6014 MAP_DENYWRITE, MAP_DENYWRITE },
6015 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
6016 MAP_EXECUTABLE, MAP_EXECUTABLE },
6017 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
6018 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
6019 MAP_NORESERVE, MAP_NORESERVE },
6020 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
6021 /* MAP_STACK had been ignored by the kernel for quite some time.
6022 Recognize it for the target insofar as we do not want to pass
6023 it through to the host. */
6024 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
6025 { 0, 0, 0, 0 }
6026 };
6027
6028 /*
6029 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
6030 * TARGET_I386 is defined if TARGET_X86_64 is defined
6031 */
6032 #if defined(TARGET_I386)
6033
6034 /* NOTE: there is really one LDT for all the threads */
6035 static uint8_t *ldt_table;
6036
6037 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
6038 {
6039 int size;
6040 void *p;
6041
6042 if (!ldt_table)
6043 return 0;
6044 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
6045 if (size > bytecount)
6046 size = bytecount;
6047 p = lock_user(VERIFY_WRITE, ptr, size, 0);
6048 if (!p)
6049 return -TARGET_EFAULT;
6050 /* ??? Should this by byteswapped? */
6051 memcpy(p, ldt_table, size);
6052 unlock_user(p, ptr, size);
6053 return size;
6054 }
6055
6056 /* XXX: add locking support */
6057 static abi_long write_ldt(CPUX86State *env,
6058 abi_ulong ptr, unsigned long bytecount, int oldmode)
6059 {
6060 struct target_modify_ldt_ldt_s ldt_info;
6061 struct target_modify_ldt_ldt_s *target_ldt_info;
6062 int seg_32bit, contents, read_exec_only, limit_in_pages;
6063 int seg_not_present, useable, lm;
6064 uint32_t *lp, entry_1, entry_2;
6065
6066 if (bytecount != sizeof(ldt_info))
6067 return -TARGET_EINVAL;
6068 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
6069 return -TARGET_EFAULT;
6070 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6071 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6072 ldt_info.limit = tswap32(target_ldt_info->limit);
6073 ldt_info.flags = tswap32(target_ldt_info->flags);
6074 unlock_user_struct(target_ldt_info, ptr, 0);
6075
6076 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
6077 return -TARGET_EINVAL;
6078 seg_32bit = ldt_info.flags & 1;
6079 contents = (ldt_info.flags >> 1) & 3;
6080 read_exec_only = (ldt_info.flags >> 3) & 1;
6081 limit_in_pages = (ldt_info.flags >> 4) & 1;
6082 seg_not_present = (ldt_info.flags >> 5) & 1;
6083 useable = (ldt_info.flags >> 6) & 1;
6084 #ifdef TARGET_ABI32
6085 lm = 0;
6086 #else
6087 lm = (ldt_info.flags >> 7) & 1;
6088 #endif
6089 if (contents == 3) {
6090 if (oldmode)
6091 return -TARGET_EINVAL;
6092 if (seg_not_present == 0)
6093 return -TARGET_EINVAL;
6094 }
6095 /* allocate the LDT */
6096 if (!ldt_table) {
6097 env->ldt.base = target_mmap(0,
6098 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
6099 PROT_READ|PROT_WRITE,
6100 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
6101 if (env->ldt.base == -1)
6102 return -TARGET_ENOMEM;
6103 memset(g2h_untagged(env->ldt.base), 0,
6104 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
6105 env->ldt.limit = 0xffff;
6106 ldt_table = g2h_untagged(env->ldt.base);
6107 }
6108
6109 /* NOTE: same code as Linux kernel */
6110 /* Allow LDTs to be cleared by the user. */
6111 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6112 if (oldmode ||
6113 (contents == 0 &&
6114 read_exec_only == 1 &&
6115 seg_32bit == 0 &&
6116 limit_in_pages == 0 &&
6117 seg_not_present == 1 &&
6118 useable == 0 )) {
6119 entry_1 = 0;
6120 entry_2 = 0;
6121 goto install;
6122 }
6123 }
6124
6125 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6126 (ldt_info.limit & 0x0ffff);
6127 entry_2 = (ldt_info.base_addr & 0xff000000) |
6128 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6129 (ldt_info.limit & 0xf0000) |
6130 ((read_exec_only ^ 1) << 9) |
6131 (contents << 10) |
6132 ((seg_not_present ^ 1) << 15) |
6133 (seg_32bit << 22) |
6134 (limit_in_pages << 23) |
6135 (lm << 21) |
6136 0x7000;
6137 if (!oldmode)
6138 entry_2 |= (useable << 20);
6139
6140 /* Install the new entry ... */
6141 install:
6142 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
6143 lp[0] = tswap32(entry_1);
6144 lp[1] = tswap32(entry_2);
6145 return 0;
6146 }
6147
6148 /* specific and weird i386 syscalls */
6149 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
6150 unsigned long bytecount)
6151 {
6152 abi_long ret;
6153
6154 switch (func) {
6155 case 0:
6156 ret = read_ldt(ptr, bytecount);
6157 break;
6158 case 1:
6159 ret = write_ldt(env, ptr, bytecount, 1);
6160 break;
6161 case 0x11:
6162 ret = write_ldt(env, ptr, bytecount, 0);
6163 break;
6164 default:
6165 ret = -TARGET_ENOSYS;
6166 break;
6167 }
6168 return ret;
6169 }
6170
6171 #if defined(TARGET_ABI32)
6172 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
6173 {
6174 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6175 struct target_modify_ldt_ldt_s ldt_info;
6176 struct target_modify_ldt_ldt_s *target_ldt_info;
6177 int seg_32bit, contents, read_exec_only, limit_in_pages;
6178 int seg_not_present, useable, lm;
6179 uint32_t *lp, entry_1, entry_2;
6180 int i;
6181
6182 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6183 if (!target_ldt_info)
6184 return -TARGET_EFAULT;
6185 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6186 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6187 ldt_info.limit = tswap32(target_ldt_info->limit);
6188 ldt_info.flags = tswap32(target_ldt_info->flags);
6189 if (ldt_info.entry_number == -1) {
6190 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
6191 if (gdt_table[i] == 0) {
6192 ldt_info.entry_number = i;
6193 target_ldt_info->entry_number = tswap32(i);
6194 break;
6195 }
6196 }
6197 }
6198 unlock_user_struct(target_ldt_info, ptr, 1);
6199
6200 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
6201 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
6202 return -TARGET_EINVAL;
6203 seg_32bit = ldt_info.flags & 1;
6204 contents = (ldt_info.flags >> 1) & 3;
6205 read_exec_only = (ldt_info.flags >> 3) & 1;
6206 limit_in_pages = (ldt_info.flags >> 4) & 1;
6207 seg_not_present = (ldt_info.flags >> 5) & 1;
6208 useable = (ldt_info.flags >> 6) & 1;
6209 #ifdef TARGET_ABI32
6210 lm = 0;
6211 #else
6212 lm = (ldt_info.flags >> 7) & 1;
6213 #endif
6214
6215 if (contents == 3) {
6216 if (seg_not_present == 0)
6217 return -TARGET_EINVAL;
6218 }
6219
6220 /* NOTE: same code as Linux kernel */
6221 /* Allow LDTs to be cleared by the user. */
6222 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6223 if ((contents == 0 &&
6224 read_exec_only == 1 &&
6225 seg_32bit == 0 &&
6226 limit_in_pages == 0 &&
6227 seg_not_present == 1 &&
6228 useable == 0 )) {
6229 entry_1 = 0;
6230 entry_2 = 0;
6231 goto install;
6232 }
6233 }
6234
6235 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6236 (ldt_info.limit & 0x0ffff);
6237 entry_2 = (ldt_info.base_addr & 0xff000000) |
6238 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6239 (ldt_info.limit & 0xf0000) |
6240 ((read_exec_only ^ 1) << 9) |
6241 (contents << 10) |
6242 ((seg_not_present ^ 1) << 15) |
6243 (seg_32bit << 22) |
6244 (limit_in_pages << 23) |
6245 (useable << 20) |
6246 (lm << 21) |
6247 0x7000;
6248
6249 /* Install the new entry ... */
6250 install:
6251 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
6252 lp[0] = tswap32(entry_1);
6253 lp[1] = tswap32(entry_2);
6254 return 0;
6255 }
6256
6257 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
6258 {
6259 struct target_modify_ldt_ldt_s *target_ldt_info;
6260 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6261 uint32_t base_addr, limit, flags;
6262 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
6263 int seg_not_present, useable, lm;
6264 uint32_t *lp, entry_1, entry_2;
6265
6266 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6267 if (!target_ldt_info)
6268 return -TARGET_EFAULT;
6269 idx = tswap32(target_ldt_info->entry_number);
6270 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
6271 idx > TARGET_GDT_ENTRY_TLS_MAX) {
6272 unlock_user_struct(target_ldt_info, ptr, 1);
6273 return -TARGET_EINVAL;
6274 }
6275 lp = (uint32_t *)(gdt_table + idx);
6276 entry_1 = tswap32(lp[0]);
6277 entry_2 = tswap32(lp[1]);
6278
6279 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
6280 contents = (entry_2 >> 10) & 3;
6281 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
6282 seg_32bit = (entry_2 >> 22) & 1;
6283 limit_in_pages = (entry_2 >> 23) & 1;
6284 useable = (entry_2 >> 20) & 1;
6285 #ifdef TARGET_ABI32
6286 lm = 0;
6287 #else
6288 lm = (entry_2 >> 21) & 1;
6289 #endif
6290 flags = (seg_32bit << 0) | (contents << 1) |
6291 (read_exec_only << 3) | (limit_in_pages << 4) |
6292 (seg_not_present << 5) | (useable << 6) | (lm << 7);
6293 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
6294 base_addr = (entry_1 >> 16) |
6295 (entry_2 & 0xff000000) |
6296 ((entry_2 & 0xff) << 16);
6297 target_ldt_info->base_addr = tswapal(base_addr);
6298 target_ldt_info->limit = tswap32(limit);
6299 target_ldt_info->flags = tswap32(flags);
6300 unlock_user_struct(target_ldt_info, ptr, 1);
6301 return 0;
6302 }
6303
6304 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6305 {
6306 return -TARGET_ENOSYS;
6307 }
6308 #else
6309 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6310 {
6311 abi_long ret = 0;
6312 abi_ulong val;
6313 int idx;
6314
6315 switch(code) {
6316 case TARGET_ARCH_SET_GS:
6317 case TARGET_ARCH_SET_FS:
6318 if (code == TARGET_ARCH_SET_GS)
6319 idx = R_GS;
6320 else
6321 idx = R_FS;
6322 cpu_x86_load_seg(env, idx, 0);
6323 env->segs[idx].base = addr;
6324 break;
6325 case TARGET_ARCH_GET_GS:
6326 case TARGET_ARCH_GET_FS:
6327 if (code == TARGET_ARCH_GET_GS)
6328 idx = R_GS;
6329 else
6330 idx = R_FS;
6331 val = env->segs[idx].base;
6332 if (put_user(val, addr, abi_ulong))
6333 ret = -TARGET_EFAULT;
6334 break;
6335 default:
6336 ret = -TARGET_EINVAL;
6337 break;
6338 }
6339 return ret;
6340 }
6341 #endif /* defined(TARGET_ABI32 */
6342 #endif /* defined(TARGET_I386) */
6343
6344 /*
6345 * These constants are generic. Supply any that are missing from the host.
6346 */
6347 #ifndef PR_SET_NAME
6348 # define PR_SET_NAME 15
6349 # define PR_GET_NAME 16
6350 #endif
6351 #ifndef PR_SET_FP_MODE
6352 # define PR_SET_FP_MODE 45
6353 # define PR_GET_FP_MODE 46
6354 # define PR_FP_MODE_FR (1 << 0)
6355 # define PR_FP_MODE_FRE (1 << 1)
6356 #endif
6357 #ifndef PR_SVE_SET_VL
6358 # define PR_SVE_SET_VL 50
6359 # define PR_SVE_GET_VL 51
6360 # define PR_SVE_VL_LEN_MASK 0xffff
6361 # define PR_SVE_VL_INHERIT (1 << 17)
6362 #endif
6363 #ifndef PR_PAC_RESET_KEYS
6364 # define PR_PAC_RESET_KEYS 54
6365 # define PR_PAC_APIAKEY (1 << 0)
6366 # define PR_PAC_APIBKEY (1 << 1)
6367 # define PR_PAC_APDAKEY (1 << 2)
6368 # define PR_PAC_APDBKEY (1 << 3)
6369 # define PR_PAC_APGAKEY (1 << 4)
6370 #endif
6371 #ifndef PR_SET_TAGGED_ADDR_CTRL
6372 # define PR_SET_TAGGED_ADDR_CTRL 55
6373 # define PR_GET_TAGGED_ADDR_CTRL 56
6374 # define PR_TAGGED_ADDR_ENABLE (1UL << 0)
6375 #endif
6376 #ifndef PR_MTE_TCF_SHIFT
6377 # define PR_MTE_TCF_SHIFT 1
6378 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
6379 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
6380 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
6381 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
6382 # define PR_MTE_TAG_SHIFT 3
6383 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
6384 #endif
6385 #ifndef PR_SET_IO_FLUSHER
6386 # define PR_SET_IO_FLUSHER 57
6387 # define PR_GET_IO_FLUSHER 58
6388 #endif
6389 #ifndef PR_SET_SYSCALL_USER_DISPATCH
6390 # define PR_SET_SYSCALL_USER_DISPATCH 59
6391 #endif
6392 #ifndef PR_SME_SET_VL
6393 # define PR_SME_SET_VL 63
6394 # define PR_SME_GET_VL 64
6395 # define PR_SME_VL_LEN_MASK 0xffff
6396 # define PR_SME_VL_INHERIT (1 << 17)
6397 #endif
6398
6399 #include "target_prctl.h"
6400
6401 static abi_long do_prctl_inval0(CPUArchState *env)
6402 {
6403 return -TARGET_EINVAL;
6404 }
6405
6406 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2)
6407 {
6408 return -TARGET_EINVAL;
6409 }
6410
6411 #ifndef do_prctl_get_fp_mode
6412 #define do_prctl_get_fp_mode do_prctl_inval0
6413 #endif
6414 #ifndef do_prctl_set_fp_mode
6415 #define do_prctl_set_fp_mode do_prctl_inval1
6416 #endif
6417 #ifndef do_prctl_sve_get_vl
6418 #define do_prctl_sve_get_vl do_prctl_inval0
6419 #endif
6420 #ifndef do_prctl_sve_set_vl
6421 #define do_prctl_sve_set_vl do_prctl_inval1
6422 #endif
6423 #ifndef do_prctl_reset_keys
6424 #define do_prctl_reset_keys do_prctl_inval1
6425 #endif
6426 #ifndef do_prctl_set_tagged_addr_ctrl
6427 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1
6428 #endif
6429 #ifndef do_prctl_get_tagged_addr_ctrl
6430 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0
6431 #endif
6432 #ifndef do_prctl_get_unalign
6433 #define do_prctl_get_unalign do_prctl_inval1
6434 #endif
6435 #ifndef do_prctl_set_unalign
6436 #define do_prctl_set_unalign do_prctl_inval1
6437 #endif
6438 #ifndef do_prctl_sme_get_vl
6439 #define do_prctl_sme_get_vl do_prctl_inval0
6440 #endif
6441 #ifndef do_prctl_sme_set_vl
6442 #define do_prctl_sme_set_vl do_prctl_inval1
6443 #endif
6444
6445 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2,
6446 abi_long arg3, abi_long arg4, abi_long arg5)
6447 {
6448 abi_long ret;
6449
6450 switch (option) {
6451 case PR_GET_PDEATHSIG:
6452 {
6453 int deathsig;
6454 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig,
6455 arg3, arg4, arg5));
6456 if (!is_error(ret) &&
6457 put_user_s32(host_to_target_signal(deathsig), arg2)) {
6458 return -TARGET_EFAULT;
6459 }
6460 return ret;
6461 }
6462 case PR_SET_PDEATHSIG:
6463 return get_errno(prctl(PR_SET_PDEATHSIG, target_to_host_signal(arg2),
6464 arg3, arg4, arg5));
6465 case PR_GET_NAME:
6466 {
6467 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
6468 if (!name) {
6469 return -TARGET_EFAULT;
6470 }
6471 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name,
6472 arg3, arg4, arg5));
6473 unlock_user(name, arg2, 16);
6474 return ret;
6475 }
6476 case PR_SET_NAME:
6477 {
6478 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
6479 if (!name) {
6480 return -TARGET_EFAULT;
6481 }
6482 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name,
6483 arg3, arg4, arg5));
6484 unlock_user(name, arg2, 0);
6485 return ret;
6486 }
6487 case PR_GET_FP_MODE:
6488 return do_prctl_get_fp_mode(env);
6489 case PR_SET_FP_MODE:
6490 return do_prctl_set_fp_mode(env, arg2);
6491 case PR_SVE_GET_VL:
6492 return do_prctl_sve_get_vl(env);
6493 case PR_SVE_SET_VL:
6494 return do_prctl_sve_set_vl(env, arg2);
6495 case PR_SME_GET_VL:
6496 return do_prctl_sme_get_vl(env);
6497 case PR_SME_SET_VL:
6498 return do_prctl_sme_set_vl(env, arg2);
6499 case PR_PAC_RESET_KEYS:
6500 if (arg3 || arg4 || arg5) {
6501 return -TARGET_EINVAL;
6502 }
6503 return do_prctl_reset_keys(env, arg2);
6504 case PR_SET_TAGGED_ADDR_CTRL:
6505 if (arg3 || arg4 || arg5) {
6506 return -TARGET_EINVAL;
6507 }
6508 return do_prctl_set_tagged_addr_ctrl(env, arg2);
6509 case PR_GET_TAGGED_ADDR_CTRL:
6510 if (arg2 || arg3 || arg4 || arg5) {
6511 return -TARGET_EINVAL;
6512 }
6513 return do_prctl_get_tagged_addr_ctrl(env);
6514
6515 case PR_GET_UNALIGN:
6516 return do_prctl_get_unalign(env, arg2);
6517 case PR_SET_UNALIGN:
6518 return do_prctl_set_unalign(env, arg2);
6519
6520 case PR_CAP_AMBIENT:
6521 case PR_CAPBSET_READ:
6522 case PR_CAPBSET_DROP:
6523 case PR_GET_DUMPABLE:
6524 case PR_SET_DUMPABLE:
6525 case PR_GET_KEEPCAPS:
6526 case PR_SET_KEEPCAPS:
6527 case PR_GET_SECUREBITS:
6528 case PR_SET_SECUREBITS:
6529 case PR_GET_TIMING:
6530 case PR_SET_TIMING:
6531 case PR_GET_TIMERSLACK:
6532 case PR_SET_TIMERSLACK:
6533 case PR_MCE_KILL:
6534 case PR_MCE_KILL_GET:
6535 case PR_GET_NO_NEW_PRIVS:
6536 case PR_SET_NO_NEW_PRIVS:
6537 case PR_GET_IO_FLUSHER:
6538 case PR_SET_IO_FLUSHER:
6539 /* Some prctl options have no pointer arguments and we can pass on. */
6540 return get_errno(prctl(option, arg2, arg3, arg4, arg5));
6541
6542 case PR_GET_CHILD_SUBREAPER:
6543 case PR_SET_CHILD_SUBREAPER:
6544 case PR_GET_SPECULATION_CTRL:
6545 case PR_SET_SPECULATION_CTRL:
6546 case PR_GET_TID_ADDRESS:
6547 /* TODO */
6548 return -TARGET_EINVAL;
6549
6550 case PR_GET_FPEXC:
6551 case PR_SET_FPEXC:
6552 /* Was used for SPE on PowerPC. */
6553 return -TARGET_EINVAL;
6554
6555 case PR_GET_ENDIAN:
6556 case PR_SET_ENDIAN:
6557 case PR_GET_FPEMU:
6558 case PR_SET_FPEMU:
6559 case PR_SET_MM:
6560 case PR_GET_SECCOMP:
6561 case PR_SET_SECCOMP:
6562 case PR_SET_SYSCALL_USER_DISPATCH:
6563 case PR_GET_THP_DISABLE:
6564 case PR_SET_THP_DISABLE:
6565 case PR_GET_TSC:
6566 case PR_SET_TSC:
6567 /* Disable to prevent the target disabling stuff we need. */
6568 return -TARGET_EINVAL;
6569
6570 default:
6571 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n",
6572 option);
6573 return -TARGET_EINVAL;
6574 }
6575 }
6576
6577 #define NEW_STACK_SIZE 0x40000
6578
6579
6580 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6581 typedef struct {
6582 CPUArchState *env;
6583 pthread_mutex_t mutex;
6584 pthread_cond_t cond;
6585 pthread_t thread;
6586 uint32_t tid;
6587 abi_ulong child_tidptr;
6588 abi_ulong parent_tidptr;
6589 sigset_t sigmask;
6590 } new_thread_info;
6591
6592 static void *clone_func(void *arg)
6593 {
6594 new_thread_info *info = arg;
6595 CPUArchState *env;
6596 CPUState *cpu;
6597 TaskState *ts;
6598
6599 rcu_register_thread();
6600 tcg_register_thread();
6601 env = info->env;
6602 cpu = env_cpu(env);
6603 thread_cpu = cpu;
6604 ts = (TaskState *)cpu->opaque;
6605 info->tid = sys_gettid();
6606 task_settid(ts);
6607 if (info->child_tidptr)
6608 put_user_u32(info->tid, info->child_tidptr);
6609 if (info->parent_tidptr)
6610 put_user_u32(info->tid, info->parent_tidptr);
6611 qemu_guest_random_seed_thread_part2(cpu->random_seed);
6612 /* Enable signals. */
6613 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6614 /* Signal to the parent that we're ready. */
6615 pthread_mutex_lock(&info->mutex);
6616 pthread_cond_broadcast(&info->cond);
6617 pthread_mutex_unlock(&info->mutex);
6618 /* Wait until the parent has finished initializing the tls state. */
6619 pthread_mutex_lock(&clone_lock);
6620 pthread_mutex_unlock(&clone_lock);
6621 cpu_loop(env);
6622 /* never exits */
6623 return NULL;
6624 }
6625
6626 /* do_fork() Must return host values and target errnos (unlike most
6627 do_*() functions). */
6628 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6629 abi_ulong parent_tidptr, target_ulong newtls,
6630 abi_ulong child_tidptr)
6631 {
6632 CPUState *cpu = env_cpu(env);
6633 int ret;
6634 TaskState *ts;
6635 CPUState *new_cpu;
6636 CPUArchState *new_env;
6637 sigset_t sigmask;
6638
6639 flags &= ~CLONE_IGNORED_FLAGS;
6640
6641 /* Emulate vfork() with fork() */
6642 if (flags & CLONE_VFORK)
6643 flags &= ~(CLONE_VFORK | CLONE_VM);
6644
6645 if (flags & CLONE_VM) {
6646 TaskState *parent_ts = (TaskState *)cpu->opaque;
6647 new_thread_info info;
6648 pthread_attr_t attr;
6649
6650 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6651 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6652 return -TARGET_EINVAL;
6653 }
6654
6655 ts = g_new0(TaskState, 1);
6656 init_task_state(ts);
6657
6658 /* Grab a mutex so that thread setup appears atomic. */
6659 pthread_mutex_lock(&clone_lock);
6660
6661 /*
6662 * If this is our first additional thread, we need to ensure we
6663 * generate code for parallel execution and flush old translations.
6664 * Do this now so that the copy gets CF_PARALLEL too.
6665 */
6666 if (!(cpu->tcg_cflags & CF_PARALLEL)) {
6667 cpu->tcg_cflags |= CF_PARALLEL;
6668 tb_flush(cpu);
6669 }
6670
6671 /* we create a new CPU instance. */
6672 new_env = cpu_copy(env);
6673 /* Init regs that differ from the parent. */
6674 cpu_clone_regs_child(new_env, newsp, flags);
6675 cpu_clone_regs_parent(env, flags);
6676 new_cpu = env_cpu(new_env);
6677 new_cpu->opaque = ts;
6678 ts->bprm = parent_ts->bprm;
6679 ts->info = parent_ts->info;
6680 ts->signal_mask = parent_ts->signal_mask;
6681
6682 if (flags & CLONE_CHILD_CLEARTID) {
6683 ts->child_tidptr = child_tidptr;
6684 }
6685
6686 if (flags & CLONE_SETTLS) {
6687 cpu_set_tls (new_env, newtls);
6688 }
6689
6690 memset(&info, 0, sizeof(info));
6691 pthread_mutex_init(&info.mutex, NULL);
6692 pthread_mutex_lock(&info.mutex);
6693 pthread_cond_init(&info.cond, NULL);
6694 info.env = new_env;
6695 if (flags & CLONE_CHILD_SETTID) {
6696 info.child_tidptr = child_tidptr;
6697 }
6698 if (flags & CLONE_PARENT_SETTID) {
6699 info.parent_tidptr = parent_tidptr;
6700 }
6701
6702 ret = pthread_attr_init(&attr);
6703 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6704 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6705 /* It is not safe to deliver signals until the child has finished
6706 initializing, so temporarily block all signals. */
6707 sigfillset(&sigmask);
6708 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6709 cpu->random_seed = qemu_guest_random_seed_thread_part1();
6710
6711 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6712 /* TODO: Free new CPU state if thread creation failed. */
6713
6714 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6715 pthread_attr_destroy(&attr);
6716 if (ret == 0) {
6717 /* Wait for the child to initialize. */
6718 pthread_cond_wait(&info.cond, &info.mutex);
6719 ret = info.tid;
6720 } else {
6721 ret = -1;
6722 }
6723 pthread_mutex_unlock(&info.mutex);
6724 pthread_cond_destroy(&info.cond);
6725 pthread_mutex_destroy(&info.mutex);
6726 pthread_mutex_unlock(&clone_lock);
6727 } else {
6728 /* if no CLONE_VM, we consider it is a fork */
6729 if (flags & CLONE_INVALID_FORK_FLAGS) {
6730 return -TARGET_EINVAL;
6731 }
6732
6733 /* We can't support custom termination signals */
6734 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6735 return -TARGET_EINVAL;
6736 }
6737
6738 #if !defined(__NR_pidfd_open) || !defined(TARGET_NR_pidfd_open)
6739 if (flags & CLONE_PIDFD) {
6740 return -TARGET_EINVAL;
6741 }
6742 #endif
6743
6744 /* Can not allow CLONE_PIDFD with CLONE_PARENT_SETTID */
6745 if ((flags & CLONE_PIDFD) && (flags & CLONE_PARENT_SETTID)) {
6746 return -TARGET_EINVAL;
6747 }
6748
6749 if (block_signals()) {
6750 return -QEMU_ERESTARTSYS;
6751 }
6752
6753 fork_start();
6754 ret = fork();
6755 if (ret == 0) {
6756 /* Child Process. */
6757 cpu_clone_regs_child(env, newsp, flags);
6758 fork_end(1);
6759 /* There is a race condition here. The parent process could
6760 theoretically read the TID in the child process before the child
6761 tid is set. This would require using either ptrace
6762 (not implemented) or having *_tidptr to point at a shared memory
6763 mapping. We can't repeat the spinlock hack used above because
6764 the child process gets its own copy of the lock. */
6765 if (flags & CLONE_CHILD_SETTID)
6766 put_user_u32(sys_gettid(), child_tidptr);
6767 if (flags & CLONE_PARENT_SETTID)
6768 put_user_u32(sys_gettid(), parent_tidptr);
6769 ts = (TaskState *)cpu->opaque;
6770 if (flags & CLONE_SETTLS)
6771 cpu_set_tls (env, newtls);
6772 if (flags & CLONE_CHILD_CLEARTID)
6773 ts->child_tidptr = child_tidptr;
6774 } else {
6775 cpu_clone_regs_parent(env, flags);
6776 if (flags & CLONE_PIDFD) {
6777 int pid_fd = 0;
6778 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
6779 int pid_child = ret;
6780 pid_fd = pidfd_open(pid_child, 0);
6781 if (pid_fd >= 0) {
6782 fcntl(pid_fd, F_SETFD, fcntl(pid_fd, F_GETFL)
6783 | FD_CLOEXEC);
6784 } else {
6785 pid_fd = 0;
6786 }
6787 #endif
6788 put_user_u32(pid_fd, parent_tidptr);
6789 }
6790 fork_end(0);
6791 }
6792 g_assert(!cpu_in_exclusive_context(cpu));
6793 }
6794 return ret;
6795 }
6796
6797 /* warning : doesn't handle linux specific flags... */
6798 static int target_to_host_fcntl_cmd(int cmd)
6799 {
6800 int ret;
6801
6802 switch(cmd) {
6803 case TARGET_F_DUPFD:
6804 case TARGET_F_GETFD:
6805 case TARGET_F_SETFD:
6806 case TARGET_F_GETFL:
6807 case TARGET_F_SETFL:
6808 case TARGET_F_OFD_GETLK:
6809 case TARGET_F_OFD_SETLK:
6810 case TARGET_F_OFD_SETLKW:
6811 ret = cmd;
6812 break;
6813 case TARGET_F_GETLK:
6814 ret = F_GETLK64;
6815 break;
6816 case TARGET_F_SETLK:
6817 ret = F_SETLK64;
6818 break;
6819 case TARGET_F_SETLKW:
6820 ret = F_SETLKW64;
6821 break;
6822 case TARGET_F_GETOWN:
6823 ret = F_GETOWN;
6824 break;
6825 case TARGET_F_SETOWN:
6826 ret = F_SETOWN;
6827 break;
6828 case TARGET_F_GETSIG:
6829 ret = F_GETSIG;
6830 break;
6831 case TARGET_F_SETSIG:
6832 ret = F_SETSIG;
6833 break;
6834 #if TARGET_ABI_BITS == 32
6835 case TARGET_F_GETLK64:
6836 ret = F_GETLK64;
6837 break;
6838 case TARGET_F_SETLK64:
6839 ret = F_SETLK64;
6840 break;
6841 case TARGET_F_SETLKW64:
6842 ret = F_SETLKW64;
6843 break;
6844 #endif
6845 case TARGET_F_SETLEASE:
6846 ret = F_SETLEASE;
6847 break;
6848 case TARGET_F_GETLEASE:
6849 ret = F_GETLEASE;
6850 break;
6851 #ifdef F_DUPFD_CLOEXEC
6852 case TARGET_F_DUPFD_CLOEXEC:
6853 ret = F_DUPFD_CLOEXEC;
6854 break;
6855 #endif
6856 case TARGET_F_NOTIFY:
6857 ret = F_NOTIFY;
6858 break;
6859 #ifdef F_GETOWN_EX
6860 case TARGET_F_GETOWN_EX:
6861 ret = F_GETOWN_EX;
6862 break;
6863 #endif
6864 #ifdef F_SETOWN_EX
6865 case TARGET_F_SETOWN_EX:
6866 ret = F_SETOWN_EX;
6867 break;
6868 #endif
6869 #ifdef F_SETPIPE_SZ
6870 case TARGET_F_SETPIPE_SZ:
6871 ret = F_SETPIPE_SZ;
6872 break;
6873 case TARGET_F_GETPIPE_SZ:
6874 ret = F_GETPIPE_SZ;
6875 break;
6876 #endif
6877 #ifdef F_ADD_SEALS
6878 case TARGET_F_ADD_SEALS:
6879 ret = F_ADD_SEALS;
6880 break;
6881 case TARGET_F_GET_SEALS:
6882 ret = F_GET_SEALS;
6883 break;
6884 #endif
6885 default:
6886 ret = -TARGET_EINVAL;
6887 break;
6888 }
6889
6890 #if defined(__powerpc64__)
6891 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
6892 * is not supported by kernel. The glibc fcntl call actually adjusts
6893 * them to 5, 6 and 7 before making the syscall(). Since we make the
6894 * syscall directly, adjust to what is supported by the kernel.
6895 */
6896 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
6897 ret -= F_GETLK64 - 5;
6898 }
6899 #endif
6900
6901 return ret;
6902 }
6903
6904 #define FLOCK_TRANSTBL \
6905 switch (type) { \
6906 TRANSTBL_CONVERT(F_RDLCK); \
6907 TRANSTBL_CONVERT(F_WRLCK); \
6908 TRANSTBL_CONVERT(F_UNLCK); \
6909 }
6910
6911 static int target_to_host_flock(int type)
6912 {
6913 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
6914 FLOCK_TRANSTBL
6915 #undef TRANSTBL_CONVERT
6916 return -TARGET_EINVAL;
6917 }
6918
6919 static int host_to_target_flock(int type)
6920 {
6921 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
6922 FLOCK_TRANSTBL
6923 #undef TRANSTBL_CONVERT
6924 /* if we don't know how to convert the value coming
6925 * from the host we copy to the target field as-is
6926 */
6927 return type;
6928 }
6929
6930 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6931 abi_ulong target_flock_addr)
6932 {
6933 struct target_flock *target_fl;
6934 int l_type;
6935
6936 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6937 return -TARGET_EFAULT;
6938 }
6939
6940 __get_user(l_type, &target_fl->l_type);
6941 l_type = target_to_host_flock(l_type);
6942 if (l_type < 0) {
6943 return l_type;
6944 }
6945 fl->l_type = l_type;
6946 __get_user(fl->l_whence, &target_fl->l_whence);
6947 __get_user(fl->l_start, &target_fl->l_start);
6948 __get_user(fl->l_len, &target_fl->l_len);
6949 __get_user(fl->l_pid, &target_fl->l_pid);
6950 unlock_user_struct(target_fl, target_flock_addr, 0);
6951 return 0;
6952 }
6953
6954 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6955 const struct flock64 *fl)
6956 {
6957 struct target_flock *target_fl;
6958 short l_type;
6959
6960 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6961 return -TARGET_EFAULT;
6962 }
6963
6964 l_type = host_to_target_flock(fl->l_type);
6965 __put_user(l_type, &target_fl->l_type);
6966 __put_user(fl->l_whence, &target_fl->l_whence);
6967 __put_user(fl->l_start, &target_fl->l_start);
6968 __put_user(fl->l_len, &target_fl->l_len);
6969 __put_user(fl->l_pid, &target_fl->l_pid);
6970 unlock_user_struct(target_fl, target_flock_addr, 1);
6971 return 0;
6972 }
6973
6974 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6975 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6976
6977 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6978 struct target_oabi_flock64 {
6979 abi_short l_type;
6980 abi_short l_whence;
6981 abi_llong l_start;
6982 abi_llong l_len;
6983 abi_int l_pid;
6984 } QEMU_PACKED;
6985
6986 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
6987 abi_ulong target_flock_addr)
6988 {
6989 struct target_oabi_flock64 *target_fl;
6990 int l_type;
6991
6992 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6993 return -TARGET_EFAULT;
6994 }
6995
6996 __get_user(l_type, &target_fl->l_type);
6997 l_type = target_to_host_flock(l_type);
6998 if (l_type < 0) {
6999 return l_type;
7000 }
7001 fl->l_type = l_type;
7002 __get_user(fl->l_whence, &target_fl->l_whence);
7003 __get_user(fl->l_start, &target_fl->l_start);
7004 __get_user(fl->l_len, &target_fl->l_len);
7005 __get_user(fl->l_pid, &target_fl->l_pid);
7006 unlock_user_struct(target_fl, target_flock_addr, 0);
7007 return 0;
7008 }
7009
7010 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
7011 const struct flock64 *fl)
7012 {
7013 struct target_oabi_flock64 *target_fl;
7014 short l_type;
7015
7016 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
7017 return -TARGET_EFAULT;
7018 }
7019
7020 l_type = host_to_target_flock(fl->l_type);
7021 __put_user(l_type, &target_fl->l_type);
7022 __put_user(fl->l_whence, &target_fl->l_whence);
7023 __put_user(fl->l_start, &target_fl->l_start);
7024 __put_user(fl->l_len, &target_fl->l_len);
7025 __put_user(fl->l_pid, &target_fl->l_pid);
7026 unlock_user_struct(target_fl, target_flock_addr, 1);
7027 return 0;
7028 }
7029 #endif
7030
7031 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
7032 abi_ulong target_flock_addr)
7033 {
7034 struct target_flock64 *target_fl;
7035 int l_type;
7036
7037 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
7038 return -TARGET_EFAULT;
7039 }
7040
7041 __get_user(l_type, &target_fl->l_type);
7042 l_type = target_to_host_flock(l_type);
7043 if (l_type < 0) {
7044 return l_type;
7045 }
7046 fl->l_type = l_type;
7047 __get_user(fl->l_whence, &target_fl->l_whence);
7048 __get_user(fl->l_start, &target_fl->l_start);
7049 __get_user(fl->l_len, &target_fl->l_len);
7050 __get_user(fl->l_pid, &target_fl->l_pid);
7051 unlock_user_struct(target_fl, target_flock_addr, 0);
7052 return 0;
7053 }
7054
7055 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
7056 const struct flock64 *fl)
7057 {
7058 struct target_flock64 *target_fl;
7059 short l_type;
7060
7061 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
7062 return -TARGET_EFAULT;
7063 }
7064
7065 l_type = host_to_target_flock(fl->l_type);
7066 __put_user(l_type, &target_fl->l_type);
7067 __put_user(fl->l_whence, &target_fl->l_whence);
7068 __put_user(fl->l_start, &target_fl->l_start);
7069 __put_user(fl->l_len, &target_fl->l_len);
7070 __put_user(fl->l_pid, &target_fl->l_pid);
7071 unlock_user_struct(target_fl, target_flock_addr, 1);
7072 return 0;
7073 }
7074
7075 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
7076 {
7077 struct flock64 fl64;
7078 #ifdef F_GETOWN_EX
7079 struct f_owner_ex fox;
7080 struct target_f_owner_ex *target_fox;
7081 #endif
7082 abi_long ret;
7083 int host_cmd = target_to_host_fcntl_cmd(cmd);
7084
7085 if (host_cmd == -TARGET_EINVAL)
7086 return host_cmd;
7087
7088 switch(cmd) {
7089 case TARGET_F_GETLK:
7090 ret = copy_from_user_flock(&fl64, arg);
7091 if (ret) {
7092 return ret;
7093 }
7094 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7095 if (ret == 0) {
7096 ret = copy_to_user_flock(arg, &fl64);
7097 }
7098 break;
7099
7100 case TARGET_F_SETLK:
7101 case TARGET_F_SETLKW:
7102 ret = copy_from_user_flock(&fl64, arg);
7103 if (ret) {
7104 return ret;
7105 }
7106 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7107 break;
7108
7109 case TARGET_F_GETLK64:
7110 case TARGET_F_OFD_GETLK:
7111 ret = copy_from_user_flock64(&fl64, arg);
7112 if (ret) {
7113 return ret;
7114 }
7115 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7116 if (ret == 0) {
7117 ret = copy_to_user_flock64(arg, &fl64);
7118 }
7119 break;
7120 case TARGET_F_SETLK64:
7121 case TARGET_F_SETLKW64:
7122 case TARGET_F_OFD_SETLK:
7123 case TARGET_F_OFD_SETLKW:
7124 ret = copy_from_user_flock64(&fl64, arg);
7125 if (ret) {
7126 return ret;
7127 }
7128 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7129 break;
7130
7131 case TARGET_F_GETFL:
7132 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7133 if (ret >= 0) {
7134 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
7135 }
7136 break;
7137
7138 case TARGET_F_SETFL:
7139 ret = get_errno(safe_fcntl(fd, host_cmd,
7140 target_to_host_bitmask(arg,
7141 fcntl_flags_tbl)));
7142 break;
7143
7144 #ifdef F_GETOWN_EX
7145 case TARGET_F_GETOWN_EX:
7146 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7147 if (ret >= 0) {
7148 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
7149 return -TARGET_EFAULT;
7150 target_fox->type = tswap32(fox.type);
7151 target_fox->pid = tswap32(fox.pid);
7152 unlock_user_struct(target_fox, arg, 1);
7153 }
7154 break;
7155 #endif
7156
7157 #ifdef F_SETOWN_EX
7158 case TARGET_F_SETOWN_EX:
7159 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
7160 return -TARGET_EFAULT;
7161 fox.type = tswap32(target_fox->type);
7162 fox.pid = tswap32(target_fox->pid);
7163 unlock_user_struct(target_fox, arg, 0);
7164 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7165 break;
7166 #endif
7167
7168 case TARGET_F_SETSIG:
7169 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg)));
7170 break;
7171
7172 case TARGET_F_GETSIG:
7173 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg)));
7174 break;
7175
7176 case TARGET_F_SETOWN:
7177 case TARGET_F_GETOWN:
7178 case TARGET_F_SETLEASE:
7179 case TARGET_F_GETLEASE:
7180 case TARGET_F_SETPIPE_SZ:
7181 case TARGET_F_GETPIPE_SZ:
7182 case TARGET_F_ADD_SEALS:
7183 case TARGET_F_GET_SEALS:
7184 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7185 break;
7186
7187 default:
7188 ret = get_errno(safe_fcntl(fd, cmd, arg));
7189 break;
7190 }
7191 return ret;
7192 }
7193
7194 #ifdef USE_UID16
7195
7196 static inline int high2lowuid(int uid)
7197 {
7198 if (uid > 65535)
7199 return 65534;
7200 else
7201 return uid;
7202 }
7203
7204 static inline int high2lowgid(int gid)
7205 {
7206 if (gid > 65535)
7207 return 65534;
7208 else
7209 return gid;
7210 }
7211
7212 static inline int low2highuid(int uid)
7213 {
7214 if ((int16_t)uid == -1)
7215 return -1;
7216 else
7217 return uid;
7218 }
7219
7220 static inline int low2highgid(int gid)
7221 {
7222 if ((int16_t)gid == -1)
7223 return -1;
7224 else
7225 return gid;
7226 }
7227 static inline int tswapid(int id)
7228 {
7229 return tswap16(id);
7230 }
7231
7232 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
7233
7234 #else /* !USE_UID16 */
7235 static inline int high2lowuid(int uid)
7236 {
7237 return uid;
7238 }
7239 static inline int high2lowgid(int gid)
7240 {
7241 return gid;
7242 }
7243 static inline int low2highuid(int uid)
7244 {
7245 return uid;
7246 }
7247 static inline int low2highgid(int gid)
7248 {
7249 return gid;
7250 }
7251 static inline int tswapid(int id)
7252 {
7253 return tswap32(id);
7254 }
7255
7256 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
7257
7258 #endif /* USE_UID16 */
7259
7260 /* We must do direct syscalls for setting UID/GID, because we want to
7261 * implement the Linux system call semantics of "change only for this thread",
7262 * not the libc/POSIX semantics of "change for all threads in process".
7263 * (See http://ewontfix.com/17/ for more details.)
7264 * We use the 32-bit version of the syscalls if present; if it is not
7265 * then either the host architecture supports 32-bit UIDs natively with
7266 * the standard syscall, or the 16-bit UID is the best we can do.
7267 */
7268 #ifdef __NR_setuid32
7269 #define __NR_sys_setuid __NR_setuid32
7270 #else
7271 #define __NR_sys_setuid __NR_setuid
7272 #endif
7273 #ifdef __NR_setgid32
7274 #define __NR_sys_setgid __NR_setgid32
7275 #else
7276 #define __NR_sys_setgid __NR_setgid
7277 #endif
7278 #ifdef __NR_setresuid32
7279 #define __NR_sys_setresuid __NR_setresuid32
7280 #else
7281 #define __NR_sys_setresuid __NR_setresuid
7282 #endif
7283 #ifdef __NR_setresgid32
7284 #define __NR_sys_setresgid __NR_setresgid32
7285 #else
7286 #define __NR_sys_setresgid __NR_setresgid
7287 #endif
7288
7289 _syscall1(int, sys_setuid, uid_t, uid)
7290 _syscall1(int, sys_setgid, gid_t, gid)
7291 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
7292 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
7293
7294 void syscall_init(void)
7295 {
7296 IOCTLEntry *ie;
7297 const argtype *arg_type;
7298 int size;
7299
7300 thunk_init(STRUCT_MAX);
7301
7302 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
7303 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
7304 #include "syscall_types.h"
7305 #undef STRUCT
7306 #undef STRUCT_SPECIAL
7307
7308 /* we patch the ioctl size if necessary. We rely on the fact that
7309 no ioctl has all the bits at '1' in the size field */
7310 ie = ioctl_entries;
7311 while (ie->target_cmd != 0) {
7312 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
7313 TARGET_IOC_SIZEMASK) {
7314 arg_type = ie->arg_type;
7315 if (arg_type[0] != TYPE_PTR) {
7316 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
7317 ie->target_cmd);
7318 exit(1);
7319 }
7320 arg_type++;
7321 size = thunk_type_size(arg_type, 0);
7322 ie->target_cmd = (ie->target_cmd &
7323 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
7324 (size << TARGET_IOC_SIZESHIFT);
7325 }
7326
7327 /* automatic consistency check if same arch */
7328 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
7329 (defined(__x86_64__) && defined(TARGET_X86_64))
7330 if (unlikely(ie->target_cmd != ie->host_cmd)) {
7331 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
7332 ie->name, ie->target_cmd, ie->host_cmd);
7333 }
7334 #endif
7335 ie++;
7336 }
7337 }
7338
7339 #ifdef TARGET_NR_truncate64
7340 static inline abi_long target_truncate64(CPUArchState *cpu_env, const char *arg1,
7341 abi_long arg2,
7342 abi_long arg3,
7343 abi_long arg4)
7344 {
7345 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
7346 arg2 = arg3;
7347 arg3 = arg4;
7348 }
7349 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
7350 }
7351 #endif
7352
7353 #ifdef TARGET_NR_ftruncate64
7354 static inline abi_long target_ftruncate64(CPUArchState *cpu_env, abi_long arg1,
7355 abi_long arg2,
7356 abi_long arg3,
7357 abi_long arg4)
7358 {
7359 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
7360 arg2 = arg3;
7361 arg3 = arg4;
7362 }
7363 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
7364 }
7365 #endif
7366
7367 #if defined(TARGET_NR_timer_settime) || \
7368 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
7369 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its,
7370 abi_ulong target_addr)
7371 {
7372 if (target_to_host_timespec(&host_its->it_interval, target_addr +
7373 offsetof(struct target_itimerspec,
7374 it_interval)) ||
7375 target_to_host_timespec(&host_its->it_value, target_addr +
7376 offsetof(struct target_itimerspec,
7377 it_value))) {
7378 return -TARGET_EFAULT;
7379 }
7380
7381 return 0;
7382 }
7383 #endif
7384
7385 #if defined(TARGET_NR_timer_settime64) || \
7386 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD))
7387 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its,
7388 abi_ulong target_addr)
7389 {
7390 if (target_to_host_timespec64(&host_its->it_interval, target_addr +
7391 offsetof(struct target__kernel_itimerspec,
7392 it_interval)) ||
7393 target_to_host_timespec64(&host_its->it_value, target_addr +
7394 offsetof(struct target__kernel_itimerspec,
7395 it_value))) {
7396 return -TARGET_EFAULT;
7397 }
7398
7399 return 0;
7400 }
7401 #endif
7402
7403 #if ((defined(TARGET_NR_timerfd_gettime) || \
7404 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
7405 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
7406 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
7407 struct itimerspec *host_its)
7408 {
7409 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7410 it_interval),
7411 &host_its->it_interval) ||
7412 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7413 it_value),
7414 &host_its->it_value)) {
7415 return -TARGET_EFAULT;
7416 }
7417 return 0;
7418 }
7419 #endif
7420
7421 #if ((defined(TARGET_NR_timerfd_gettime64) || \
7422 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \
7423 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64)
7424 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr,
7425 struct itimerspec *host_its)
7426 {
7427 if (host_to_target_timespec64(target_addr +
7428 offsetof(struct target__kernel_itimerspec,
7429 it_interval),
7430 &host_its->it_interval) ||
7431 host_to_target_timespec64(target_addr +
7432 offsetof(struct target__kernel_itimerspec,
7433 it_value),
7434 &host_its->it_value)) {
7435 return -TARGET_EFAULT;
7436 }
7437 return 0;
7438 }
7439 #endif
7440
7441 #if defined(TARGET_NR_adjtimex) || \
7442 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
7443 static inline abi_long target_to_host_timex(struct timex *host_tx,
7444 abi_long target_addr)
7445 {
7446 struct target_timex *target_tx;
7447
7448 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7449 return -TARGET_EFAULT;
7450 }
7451
7452 __get_user(host_tx->modes, &target_tx->modes);
7453 __get_user(host_tx->offset, &target_tx->offset);
7454 __get_user(host_tx->freq, &target_tx->freq);
7455 __get_user(host_tx->maxerror, &target_tx->maxerror);
7456 __get_user(host_tx->esterror, &target_tx->esterror);
7457 __get_user(host_tx->status, &target_tx->status);
7458 __get_user(host_tx->constant, &target_tx->constant);
7459 __get_user(host_tx->precision, &target_tx->precision);
7460 __get_user(host_tx->tolerance, &target_tx->tolerance);
7461 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7462 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7463 __get_user(host_tx->tick, &target_tx->tick);
7464 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7465 __get_user(host_tx->jitter, &target_tx->jitter);
7466 __get_user(host_tx->shift, &target_tx->shift);
7467 __get_user(host_tx->stabil, &target_tx->stabil);
7468 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7469 __get_user(host_tx->calcnt, &target_tx->calcnt);
7470 __get_user(host_tx->errcnt, &target_tx->errcnt);
7471 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7472 __get_user(host_tx->tai, &target_tx->tai);
7473
7474 unlock_user_struct(target_tx, target_addr, 0);
7475 return 0;
7476 }
7477
7478 static inline abi_long host_to_target_timex(abi_long target_addr,
7479 struct timex *host_tx)
7480 {
7481 struct target_timex *target_tx;
7482
7483 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7484 return -TARGET_EFAULT;
7485 }
7486
7487 __put_user(host_tx->modes, &target_tx->modes);
7488 __put_user(host_tx->offset, &target_tx->offset);
7489 __put_user(host_tx->freq, &target_tx->freq);
7490 __put_user(host_tx->maxerror, &target_tx->maxerror);
7491 __put_user(host_tx->esterror, &target_tx->esterror);
7492 __put_user(host_tx->status, &target_tx->status);
7493 __put_user(host_tx->constant, &target_tx->constant);
7494 __put_user(host_tx->precision, &target_tx->precision);
7495 __put_user(host_tx->tolerance, &target_tx->tolerance);
7496 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7497 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7498 __put_user(host_tx->tick, &target_tx->tick);
7499 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7500 __put_user(host_tx->jitter, &target_tx->jitter);
7501 __put_user(host_tx->shift, &target_tx->shift);
7502 __put_user(host_tx->stabil, &target_tx->stabil);
7503 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7504 __put_user(host_tx->calcnt, &target_tx->calcnt);
7505 __put_user(host_tx->errcnt, &target_tx->errcnt);
7506 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7507 __put_user(host_tx->tai, &target_tx->tai);
7508
7509 unlock_user_struct(target_tx, target_addr, 1);
7510 return 0;
7511 }
7512 #endif
7513
7514
7515 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
7516 static inline abi_long target_to_host_timex64(struct timex *host_tx,
7517 abi_long target_addr)
7518 {
7519 struct target__kernel_timex *target_tx;
7520
7521 if (copy_from_user_timeval64(&host_tx->time, target_addr +
7522 offsetof(struct target__kernel_timex,
7523 time))) {
7524 return -TARGET_EFAULT;
7525 }
7526
7527 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7528 return -TARGET_EFAULT;
7529 }
7530
7531 __get_user(host_tx->modes, &target_tx->modes);
7532 __get_user(host_tx->offset, &target_tx->offset);
7533 __get_user(host_tx->freq, &target_tx->freq);
7534 __get_user(host_tx->maxerror, &target_tx->maxerror);
7535 __get_user(host_tx->esterror, &target_tx->esterror);
7536 __get_user(host_tx->status, &target_tx->status);
7537 __get_user(host_tx->constant, &target_tx->constant);
7538 __get_user(host_tx->precision, &target_tx->precision);
7539 __get_user(host_tx->tolerance, &target_tx->tolerance);
7540 __get_user(host_tx->tick, &target_tx->tick);
7541 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7542 __get_user(host_tx->jitter, &target_tx->jitter);
7543 __get_user(host_tx->shift, &target_tx->shift);
7544 __get_user(host_tx->stabil, &target_tx->stabil);
7545 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7546 __get_user(host_tx->calcnt, &target_tx->calcnt);
7547 __get_user(host_tx->errcnt, &target_tx->errcnt);
7548 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7549 __get_user(host_tx->tai, &target_tx->tai);
7550
7551 unlock_user_struct(target_tx, target_addr, 0);
7552 return 0;
7553 }
7554
7555 static inline abi_long host_to_target_timex64(abi_long target_addr,
7556 struct timex *host_tx)
7557 {
7558 struct target__kernel_timex *target_tx;
7559
7560 if (copy_to_user_timeval64(target_addr +
7561 offsetof(struct target__kernel_timex, time),
7562 &host_tx->time)) {
7563 return -TARGET_EFAULT;
7564 }
7565
7566 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7567 return -TARGET_EFAULT;
7568 }
7569
7570 __put_user(host_tx->modes, &target_tx->modes);
7571 __put_user(host_tx->offset, &target_tx->offset);
7572 __put_user(host_tx->freq, &target_tx->freq);
7573 __put_user(host_tx->maxerror, &target_tx->maxerror);
7574 __put_user(host_tx->esterror, &target_tx->esterror);
7575 __put_user(host_tx->status, &target_tx->status);
7576 __put_user(host_tx->constant, &target_tx->constant);
7577 __put_user(host_tx->precision, &target_tx->precision);
7578 __put_user(host_tx->tolerance, &target_tx->tolerance);
7579 __put_user(host_tx->tick, &target_tx->tick);
7580 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7581 __put_user(host_tx->jitter, &target_tx->jitter);
7582 __put_user(host_tx->shift, &target_tx->shift);
7583 __put_user(host_tx->stabil, &target_tx->stabil);
7584 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7585 __put_user(host_tx->calcnt, &target_tx->calcnt);
7586 __put_user(host_tx->errcnt, &target_tx->errcnt);
7587 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7588 __put_user(host_tx->tai, &target_tx->tai);
7589
7590 unlock_user_struct(target_tx, target_addr, 1);
7591 return 0;
7592 }
7593 #endif
7594
7595 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID
7596 #define sigev_notify_thread_id _sigev_un._tid
7597 #endif
7598
7599 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
7600 abi_ulong target_addr)
7601 {
7602 struct target_sigevent *target_sevp;
7603
7604 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
7605 return -TARGET_EFAULT;
7606 }
7607
7608 /* This union is awkward on 64 bit systems because it has a 32 bit
7609 * integer and a pointer in it; we follow the conversion approach
7610 * used for handling sigval types in signal.c so the guest should get
7611 * the correct value back even if we did a 64 bit byteswap and it's
7612 * using the 32 bit integer.
7613 */
7614 host_sevp->sigev_value.sival_ptr =
7615 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
7616 host_sevp->sigev_signo =
7617 target_to_host_signal(tswap32(target_sevp->sigev_signo));
7618 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
7619 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid);
7620
7621 unlock_user_struct(target_sevp, target_addr, 1);
7622 return 0;
7623 }
7624
7625 #if defined(TARGET_NR_mlockall)
7626 static inline int target_to_host_mlockall_arg(int arg)
7627 {
7628 int result = 0;
7629
7630 if (arg & TARGET_MCL_CURRENT) {
7631 result |= MCL_CURRENT;
7632 }
7633 if (arg & TARGET_MCL_FUTURE) {
7634 result |= MCL_FUTURE;
7635 }
7636 #ifdef MCL_ONFAULT
7637 if (arg & TARGET_MCL_ONFAULT) {
7638 result |= MCL_ONFAULT;
7639 }
7640 #endif
7641
7642 return result;
7643 }
7644 #endif
7645
7646 static inline int target_to_host_msync_arg(abi_long arg)
7647 {
7648 return ((arg & TARGET_MS_ASYNC) ? MS_ASYNC : 0) |
7649 ((arg & TARGET_MS_INVALIDATE) ? MS_INVALIDATE : 0) |
7650 ((arg & TARGET_MS_SYNC) ? MS_SYNC : 0) |
7651 (arg & ~(TARGET_MS_ASYNC | TARGET_MS_INVALIDATE | TARGET_MS_SYNC));
7652 }
7653
7654 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
7655 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
7656 defined(TARGET_NR_newfstatat))
7657 static inline abi_long host_to_target_stat64(CPUArchState *cpu_env,
7658 abi_ulong target_addr,
7659 struct stat *host_st)
7660 {
7661 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
7662 if (cpu_env->eabi) {
7663 struct target_eabi_stat64 *target_st;
7664
7665 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7666 return -TARGET_EFAULT;
7667 memset(target_st, 0, sizeof(struct target_eabi_stat64));
7668 __put_user(host_st->st_dev, &target_st->st_dev);
7669 __put_user(host_st->st_ino, &target_st->st_ino);
7670 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7671 __put_user(host_st->st_ino, &target_st->__st_ino);
7672 #endif
7673 __put_user(host_st->st_mode, &target_st->st_mode);
7674 __put_user(host_st->st_nlink, &target_st->st_nlink);
7675 __put_user(host_st->st_uid, &target_st->st_uid);
7676 __put_user(host_st->st_gid, &target_st->st_gid);
7677 __put_user(host_st->st_rdev, &target_st->st_rdev);
7678 __put_user(host_st->st_size, &target_st->st_size);
7679 __put_user(host_st->st_blksize, &target_st->st_blksize);
7680 __put_user(host_st->st_blocks, &target_st->st_blocks);
7681 __put_user(host_st->st_atime, &target_st->target_st_atime);
7682 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7683 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7684 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7685 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7686 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7687 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7688 #endif
7689 unlock_user_struct(target_st, target_addr, 1);
7690 } else
7691 #endif
7692 {
7693 #if defined(TARGET_HAS_STRUCT_STAT64)
7694 struct target_stat64 *target_st;
7695 #else
7696 struct target_stat *target_st;
7697 #endif
7698
7699 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7700 return -TARGET_EFAULT;
7701 memset(target_st, 0, sizeof(*target_st));
7702 __put_user(host_st->st_dev, &target_st->st_dev);
7703 __put_user(host_st->st_ino, &target_st->st_ino);
7704 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7705 __put_user(host_st->st_ino, &target_st->__st_ino);
7706 #endif
7707 __put_user(host_st->st_mode, &target_st->st_mode);
7708 __put_user(host_st->st_nlink, &target_st->st_nlink);
7709 __put_user(host_st->st_uid, &target_st->st_uid);
7710 __put_user(host_st->st_gid, &target_st->st_gid);
7711 __put_user(host_st->st_rdev, &target_st->st_rdev);
7712 /* XXX: better use of kernel struct */
7713 __put_user(host_st->st_size, &target_st->st_size);
7714 __put_user(host_st->st_blksize, &target_st->st_blksize);
7715 __put_user(host_st->st_blocks, &target_st->st_blocks);
7716 __put_user(host_st->st_atime, &target_st->target_st_atime);
7717 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7718 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7719 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7720 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7721 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7722 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7723 #endif
7724 unlock_user_struct(target_st, target_addr, 1);
7725 }
7726
7727 return 0;
7728 }
7729 #endif
7730
7731 #if defined(TARGET_NR_statx) && defined(__NR_statx)
7732 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
7733 abi_ulong target_addr)
7734 {
7735 struct target_statx *target_stx;
7736
7737 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
7738 return -TARGET_EFAULT;
7739 }
7740 memset(target_stx, 0, sizeof(*target_stx));
7741
7742 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
7743 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
7744 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
7745 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
7746 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
7747 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
7748 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
7749 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
7750 __put_user(host_stx->stx_size, &target_stx->stx_size);
7751 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
7752 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
7753 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
7754 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
7755 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
7756 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
7757 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
7758 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
7759 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
7760 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
7761 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
7762 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
7763 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
7764 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
7765
7766 unlock_user_struct(target_stx, target_addr, 1);
7767
7768 return 0;
7769 }
7770 #endif
7771
7772 static int do_sys_futex(int *uaddr, int op, int val,
7773 const struct timespec *timeout, int *uaddr2,
7774 int val3)
7775 {
7776 #if HOST_LONG_BITS == 64
7777 #if defined(__NR_futex)
7778 /* always a 64-bit time_t, it doesn't define _time64 version */
7779 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7780
7781 #endif
7782 #else /* HOST_LONG_BITS == 64 */
7783 #if defined(__NR_futex_time64)
7784 if (sizeof(timeout->tv_sec) == 8) {
7785 /* _time64 function on 32bit arch */
7786 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
7787 }
7788 #endif
7789 #if defined(__NR_futex)
7790 /* old function on 32bit arch */
7791 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7792 #endif
7793 #endif /* HOST_LONG_BITS == 64 */
7794 g_assert_not_reached();
7795 }
7796
7797 static int do_safe_futex(int *uaddr, int op, int val,
7798 const struct timespec *timeout, int *uaddr2,
7799 int val3)
7800 {
7801 #if HOST_LONG_BITS == 64
7802 #if defined(__NR_futex)
7803 /* always a 64-bit time_t, it doesn't define _time64 version */
7804 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7805 #endif
7806 #else /* HOST_LONG_BITS == 64 */
7807 #if defined(__NR_futex_time64)
7808 if (sizeof(timeout->tv_sec) == 8) {
7809 /* _time64 function on 32bit arch */
7810 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
7811 val3));
7812 }
7813 #endif
7814 #if defined(__NR_futex)
7815 /* old function on 32bit arch */
7816 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7817 #endif
7818 #endif /* HOST_LONG_BITS == 64 */
7819 return -TARGET_ENOSYS;
7820 }
7821
7822 /* ??? Using host futex calls even when target atomic operations
7823 are not really atomic probably breaks things. However implementing
7824 futexes locally would make futexes shared between multiple processes
7825 tricky. However they're probably useless because guest atomic
7826 operations won't work either. */
7827 #if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64)
7828 static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr,
7829 int op, int val, target_ulong timeout,
7830 target_ulong uaddr2, int val3)
7831 {
7832 struct timespec ts, *pts = NULL;
7833 void *haddr2 = NULL;
7834 int base_op;
7835
7836 /* We assume FUTEX_* constants are the same on both host and target. */
7837 #ifdef FUTEX_CMD_MASK
7838 base_op = op & FUTEX_CMD_MASK;
7839 #else
7840 base_op = op;
7841 #endif
7842 switch (base_op) {
7843 case FUTEX_WAIT:
7844 case FUTEX_WAIT_BITSET:
7845 val = tswap32(val);
7846 break;
7847 case FUTEX_WAIT_REQUEUE_PI:
7848 val = tswap32(val);
7849 haddr2 = g2h(cpu, uaddr2);
7850 break;
7851 case FUTEX_LOCK_PI:
7852 case FUTEX_LOCK_PI2:
7853 break;
7854 case FUTEX_WAKE:
7855 case FUTEX_WAKE_BITSET:
7856 case FUTEX_TRYLOCK_PI:
7857 case FUTEX_UNLOCK_PI:
7858 timeout = 0;
7859 break;
7860 case FUTEX_FD:
7861 val = target_to_host_signal(val);
7862 timeout = 0;
7863 break;
7864 case FUTEX_CMP_REQUEUE:
7865 case FUTEX_CMP_REQUEUE_PI:
7866 val3 = tswap32(val3);
7867 /* fall through */
7868 case FUTEX_REQUEUE:
7869 case FUTEX_WAKE_OP:
7870 /*
7871 * For these, the 4th argument is not TIMEOUT, but VAL2.
7872 * But the prototype of do_safe_futex takes a pointer, so
7873 * insert casts to satisfy the compiler. We do not need
7874 * to tswap VAL2 since it's not compared to guest memory.
7875 */
7876 pts = (struct timespec *)(uintptr_t)timeout;
7877 timeout = 0;
7878 haddr2 = g2h(cpu, uaddr2);
7879 break;
7880 default:
7881 return -TARGET_ENOSYS;
7882 }
7883 if (timeout) {
7884 pts = &ts;
7885 if (time64
7886 ? target_to_host_timespec64(pts, timeout)
7887 : target_to_host_timespec(pts, timeout)) {
7888 return -TARGET_EFAULT;
7889 }
7890 }
7891 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3);
7892 }
7893 #endif
7894
7895 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7896 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7897 abi_long handle, abi_long mount_id,
7898 abi_long flags)
7899 {
7900 struct file_handle *target_fh;
7901 struct file_handle *fh;
7902 int mid = 0;
7903 abi_long ret;
7904 char *name;
7905 unsigned int size, total_size;
7906
7907 if (get_user_s32(size, handle)) {
7908 return -TARGET_EFAULT;
7909 }
7910
7911 name = lock_user_string(pathname);
7912 if (!name) {
7913 return -TARGET_EFAULT;
7914 }
7915
7916 total_size = sizeof(struct file_handle) + size;
7917 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7918 if (!target_fh) {
7919 unlock_user(name, pathname, 0);
7920 return -TARGET_EFAULT;
7921 }
7922
7923 fh = g_malloc0(total_size);
7924 fh->handle_bytes = size;
7925
7926 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7927 unlock_user(name, pathname, 0);
7928
7929 /* man name_to_handle_at(2):
7930 * Other than the use of the handle_bytes field, the caller should treat
7931 * the file_handle structure as an opaque data type
7932 */
7933
7934 memcpy(target_fh, fh, total_size);
7935 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7936 target_fh->handle_type = tswap32(fh->handle_type);
7937 g_free(fh);
7938 unlock_user(target_fh, handle, total_size);
7939
7940 if (put_user_s32(mid, mount_id)) {
7941 return -TARGET_EFAULT;
7942 }
7943
7944 return ret;
7945
7946 }
7947 #endif
7948
7949 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7950 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7951 abi_long flags)
7952 {
7953 struct file_handle *target_fh;
7954 struct file_handle *fh;
7955 unsigned int size, total_size;
7956 abi_long ret;
7957
7958 if (get_user_s32(size, handle)) {
7959 return -TARGET_EFAULT;
7960 }
7961
7962 total_size = sizeof(struct file_handle) + size;
7963 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7964 if (!target_fh) {
7965 return -TARGET_EFAULT;
7966 }
7967
7968 fh = g_memdup(target_fh, total_size);
7969 fh->handle_bytes = size;
7970 fh->handle_type = tswap32(target_fh->handle_type);
7971
7972 ret = get_errno(open_by_handle_at(mount_fd, fh,
7973 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7974
7975 g_free(fh);
7976
7977 unlock_user(target_fh, handle, total_size);
7978
7979 return ret;
7980 }
7981 #endif
7982
7983 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7984
7985 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7986 {
7987 int host_flags;
7988 target_sigset_t *target_mask;
7989 sigset_t host_mask;
7990 abi_long ret;
7991
7992 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) {
7993 return -TARGET_EINVAL;
7994 }
7995 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7996 return -TARGET_EFAULT;
7997 }
7998
7999 target_to_host_sigset(&host_mask, target_mask);
8000
8001 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
8002
8003 ret = get_errno(signalfd(fd, &host_mask, host_flags));
8004 if (ret >= 0) {
8005 fd_trans_register(ret, &target_signalfd_trans);
8006 }
8007
8008 unlock_user_struct(target_mask, mask, 0);
8009
8010 return ret;
8011 }
8012 #endif
8013
8014 /* Map host to target signal numbers for the wait family of syscalls.
8015 Assume all other status bits are the same. */
8016 int host_to_target_waitstatus(int status)
8017 {
8018 if (WIFSIGNALED(status)) {
8019 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
8020 }
8021 if (WIFSTOPPED(status)) {
8022 return (host_to_target_signal(WSTOPSIG(status)) << 8)
8023 | (status & 0xff);
8024 }
8025 return status;
8026 }
8027
8028 static int open_self_cmdline(CPUArchState *cpu_env, int fd)
8029 {
8030 CPUState *cpu = env_cpu(cpu_env);
8031 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
8032 int i;
8033
8034 for (i = 0; i < bprm->argc; i++) {
8035 size_t len = strlen(bprm->argv[i]) + 1;
8036
8037 if (write(fd, bprm->argv[i], len) != len) {
8038 return -1;
8039 }
8040 }
8041
8042 return 0;
8043 }
8044
8045 static int open_self_maps(CPUArchState *cpu_env, int fd)
8046 {
8047 CPUState *cpu = env_cpu(cpu_env);
8048 TaskState *ts = cpu->opaque;
8049 GSList *map_info = read_self_maps();
8050 GSList *s;
8051 int count;
8052
8053 for (s = map_info; s; s = g_slist_next(s)) {
8054 MapInfo *e = (MapInfo *) s->data;
8055
8056 if (h2g_valid(e->start)) {
8057 unsigned long min = e->start;
8058 unsigned long max = e->end;
8059 int flags = page_get_flags(h2g(min));
8060 const char *path;
8061
8062 max = h2g_valid(max - 1) ?
8063 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1;
8064
8065 if (page_check_range(h2g(min), max - min, flags) == -1) {
8066 continue;
8067 }
8068
8069 #ifdef TARGET_HPPA
8070 if (h2g(max) == ts->info->stack_limit) {
8071 #else
8072 if (h2g(min) == ts->info->stack_limit) {
8073 #endif
8074 path = "[stack]";
8075 } else {
8076 path = e->path;
8077 }
8078
8079 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
8080 " %c%c%c%c %08" PRIx64 " %s %"PRId64,
8081 h2g(min), h2g(max - 1) + 1,
8082 (flags & PAGE_READ) ? 'r' : '-',
8083 (flags & PAGE_WRITE_ORG) ? 'w' : '-',
8084 (flags & PAGE_EXEC) ? 'x' : '-',
8085 e->is_priv ? 'p' : 's',
8086 (uint64_t) e->offset, e->dev, e->inode);
8087 if (path) {
8088 dprintf(fd, "%*s%s\n", 73 - count, "", path);
8089 } else {
8090 dprintf(fd, "\n");
8091 }
8092 }
8093 }
8094
8095 free_self_maps(map_info);
8096
8097 #ifdef TARGET_VSYSCALL_PAGE
8098 /*
8099 * We only support execution from the vsyscall page.
8100 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
8101 */
8102 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
8103 " --xp 00000000 00:00 0",
8104 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
8105 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
8106 #endif
8107
8108 return 0;
8109 }
8110
8111 static int open_self_stat(CPUArchState *cpu_env, int fd)
8112 {
8113 CPUState *cpu = env_cpu(cpu_env);
8114 TaskState *ts = cpu->opaque;
8115 g_autoptr(GString) buf = g_string_new(NULL);
8116 int i;
8117
8118 for (i = 0; i < 44; i++) {
8119 if (i == 0) {
8120 /* pid */
8121 g_string_printf(buf, FMT_pid " ", getpid());
8122 } else if (i == 1) {
8123 /* app name */
8124 gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
8125 bin = bin ? bin + 1 : ts->bprm->argv[0];
8126 g_string_printf(buf, "(%.15s) ", bin);
8127 } else if (i == 2) {
8128 /* task state */
8129 g_string_assign(buf, "R "); /* we are running right now */
8130 } else if (i == 3) {
8131 /* ppid */
8132 g_string_printf(buf, FMT_pid " ", getppid());
8133 } else if (i == 21) {
8134 /* starttime */
8135 g_string_printf(buf, "%" PRIu64 " ", ts->start_boottime);
8136 } else if (i == 27) {
8137 /* stack bottom */
8138 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
8139 } else {
8140 /* for the rest, there is MasterCard */
8141 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
8142 }
8143
8144 if (write(fd, buf->str, buf->len) != buf->len) {
8145 return -1;
8146 }
8147 }
8148
8149 return 0;
8150 }
8151
8152 static int open_self_auxv(CPUArchState *cpu_env, int fd)
8153 {
8154 CPUState *cpu = env_cpu(cpu_env);
8155 TaskState *ts = cpu->opaque;
8156 abi_ulong auxv = ts->info->saved_auxv;
8157 abi_ulong len = ts->info->auxv_len;
8158 char *ptr;
8159
8160 /*
8161 * Auxiliary vector is stored in target process stack.
8162 * read in whole auxv vector and copy it to file
8163 */
8164 ptr = lock_user(VERIFY_READ, auxv, len, 0);
8165 if (ptr != NULL) {
8166 while (len > 0) {
8167 ssize_t r;
8168 r = write(fd, ptr, len);
8169 if (r <= 0) {
8170 break;
8171 }
8172 len -= r;
8173 ptr += r;
8174 }
8175 lseek(fd, 0, SEEK_SET);
8176 unlock_user(ptr, auxv, len);
8177 }
8178
8179 return 0;
8180 }
8181
8182 static int is_proc_myself(const char *filename, const char *entry)
8183 {
8184 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
8185 filename += strlen("/proc/");
8186 if (!strncmp(filename, "self/", strlen("self/"))) {
8187 filename += strlen("self/");
8188 } else if (*filename >= '1' && *filename <= '9') {
8189 char myself[80];
8190 snprintf(myself, sizeof(myself), "%d/", getpid());
8191 if (!strncmp(filename, myself, strlen(myself))) {
8192 filename += strlen(myself);
8193 } else {
8194 return 0;
8195 }
8196 } else {
8197 return 0;
8198 }
8199 if (!strcmp(filename, entry)) {
8200 return 1;
8201 }
8202 }
8203 return 0;
8204 }
8205
8206 static void excp_dump_file(FILE *logfile, CPUArchState *env,
8207 const char *fmt, int code)
8208 {
8209 if (logfile) {
8210 CPUState *cs = env_cpu(env);
8211
8212 fprintf(logfile, fmt, code);
8213 fprintf(logfile, "Failing executable: %s\n", exec_path);
8214 cpu_dump_state(cs, logfile, 0);
8215 open_self_maps(env, fileno(logfile));
8216 }
8217 }
8218
8219 void target_exception_dump(CPUArchState *env, const char *fmt, int code)
8220 {
8221 /* dump to console */
8222 excp_dump_file(stderr, env, fmt, code);
8223
8224 /* dump to log file */
8225 if (qemu_log_separate()) {
8226 FILE *logfile = qemu_log_trylock();
8227
8228 excp_dump_file(logfile, env, fmt, code);
8229 qemu_log_unlock(logfile);
8230 }
8231 }
8232
8233 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
8234 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) || \
8235 defined(TARGET_RISCV)
8236 static int is_proc(const char *filename, const char *entry)
8237 {
8238 return strcmp(filename, entry) == 0;
8239 }
8240 #endif
8241
8242 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
8243 static int open_net_route(CPUArchState *cpu_env, int fd)
8244 {
8245 FILE *fp;
8246 char *line = NULL;
8247 size_t len = 0;
8248 ssize_t read;
8249
8250 fp = fopen("/proc/net/route", "r");
8251 if (fp == NULL) {
8252 return -1;
8253 }
8254
8255 /* read header */
8256
8257 read = getline(&line, &len, fp);
8258 dprintf(fd, "%s", line);
8259
8260 /* read routes */
8261
8262 while ((read = getline(&line, &len, fp)) != -1) {
8263 char iface[16];
8264 uint32_t dest, gw, mask;
8265 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
8266 int fields;
8267
8268 fields = sscanf(line,
8269 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8270 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
8271 &mask, &mtu, &window, &irtt);
8272 if (fields != 11) {
8273 continue;
8274 }
8275 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8276 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
8277 metric, tswap32(mask), mtu, window, irtt);
8278 }
8279
8280 free(line);
8281 fclose(fp);
8282
8283 return 0;
8284 }
8285 #endif
8286
8287 #if defined(TARGET_SPARC)
8288 static int open_cpuinfo(CPUArchState *cpu_env, int fd)
8289 {
8290 dprintf(fd, "type\t\t: sun4u\n");
8291 return 0;
8292 }
8293 #endif
8294
8295 #if defined(TARGET_HPPA)
8296 static int open_cpuinfo(CPUArchState *cpu_env, int fd)
8297 {
8298 int i, num_cpus;
8299
8300 num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
8301 for (i = 0; i < num_cpus; i++) {
8302 dprintf(fd, "processor\t: %d\n", i);
8303 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
8304 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
8305 dprintf(fd, "capabilities\t: os32\n");
8306 dprintf(fd, "model\t\t: 9000/778/B160L - "
8307 "Merlin L2 160 QEMU (9000/778/B160L)\n\n");
8308 }
8309 return 0;
8310 }
8311 #endif
8312
8313 #if defined(TARGET_RISCV)
8314 static int open_cpuinfo(CPUArchState *cpu_env, int fd)
8315 {
8316 int i;
8317 int num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
8318 RISCVCPU *cpu = env_archcpu(cpu_env);
8319 const RISCVCPUConfig *cfg = riscv_cpu_cfg((CPURISCVState *) cpu_env);
8320 char *isa_string = riscv_isa_string(cpu);
8321 const char *mmu;
8322
8323 if (cfg->mmu) {
8324 mmu = (cpu_env->xl == MXL_RV32) ? "sv32" : "sv48";
8325 } else {
8326 mmu = "none";
8327 }
8328
8329 for (i = 0; i < num_cpus; i++) {
8330 dprintf(fd, "processor\t: %d\n", i);
8331 dprintf(fd, "hart\t\t: %d\n", i);
8332 dprintf(fd, "isa\t\t: %s\n", isa_string);
8333 dprintf(fd, "mmu\t\t: %s\n", mmu);
8334 dprintf(fd, "uarch\t\t: qemu\n\n");
8335 }
8336
8337 g_free(isa_string);
8338 return 0;
8339 }
8340 #endif
8341
8342 #if defined(TARGET_M68K)
8343 static int open_hardware(CPUArchState *cpu_env, int fd)
8344 {
8345 dprintf(fd, "Model:\t\tqemu-m68k\n");
8346 return 0;
8347 }
8348 #endif
8349
8350 static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
8351 {
8352 struct fake_open {
8353 const char *filename;
8354 int (*fill)(CPUArchState *cpu_env, int fd);
8355 int (*cmp)(const char *s1, const char *s2);
8356 };
8357 const struct fake_open *fake_open;
8358 static const struct fake_open fakes[] = {
8359 { "maps", open_self_maps, is_proc_myself },
8360 { "stat", open_self_stat, is_proc_myself },
8361 { "auxv", open_self_auxv, is_proc_myself },
8362 { "cmdline", open_self_cmdline, is_proc_myself },
8363 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
8364 { "/proc/net/route", open_net_route, is_proc },
8365 #endif
8366 #if defined(TARGET_SPARC) || defined(TARGET_HPPA) || defined(TARGET_RISCV)
8367 { "/proc/cpuinfo", open_cpuinfo, is_proc },
8368 #endif
8369 #if defined(TARGET_M68K)
8370 { "/proc/hardware", open_hardware, is_proc },
8371 #endif
8372 { NULL, NULL, NULL }
8373 };
8374
8375 if (is_proc_myself(pathname, "exe")) {
8376 return safe_openat(dirfd, exec_path, flags, mode);
8377 }
8378
8379 for (fake_open = fakes; fake_open->filename; fake_open++) {
8380 if (fake_open->cmp(pathname, fake_open->filename)) {
8381 break;
8382 }
8383 }
8384
8385 if (fake_open->filename) {
8386 const char *tmpdir;
8387 char filename[PATH_MAX];
8388 int fd, r;
8389
8390 fd = memfd_create("qemu-open", 0);
8391 if (fd < 0) {
8392 if (errno != ENOSYS) {
8393 return fd;
8394 }
8395 /* create temporary file to map stat to */
8396 tmpdir = getenv("TMPDIR");
8397 if (!tmpdir)
8398 tmpdir = "/tmp";
8399 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
8400 fd = mkstemp(filename);
8401 if (fd < 0) {
8402 return fd;
8403 }
8404 unlink(filename);
8405 }
8406
8407 if ((r = fake_open->fill(cpu_env, fd))) {
8408 int e = errno;
8409 close(fd);
8410 errno = e;
8411 return r;
8412 }
8413 lseek(fd, 0, SEEK_SET);
8414
8415 return fd;
8416 }
8417
8418 return safe_openat(dirfd, path(pathname), flags, mode);
8419 }
8420
8421 static int do_execveat(CPUArchState *cpu_env, int dirfd,
8422 abi_long pathname, abi_long guest_argp,
8423 abi_long guest_envp, int flags)
8424 {
8425 int ret;
8426 char **argp, **envp;
8427 int argc, envc;
8428 abi_ulong gp;
8429 abi_ulong addr;
8430 char **q;
8431 void *p;
8432
8433 argc = 0;
8434
8435 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
8436 if (get_user_ual(addr, gp)) {
8437 return -TARGET_EFAULT;
8438 }
8439 if (!addr) {
8440 break;
8441 }
8442 argc++;
8443 }
8444 envc = 0;
8445 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
8446 if (get_user_ual(addr, gp)) {
8447 return -TARGET_EFAULT;
8448 }
8449 if (!addr) {
8450 break;
8451 }
8452 envc++;
8453 }
8454
8455 argp = g_new0(char *, argc + 1);
8456 envp = g_new0(char *, envc + 1);
8457
8458 for (gp = guest_argp, q = argp; gp; gp += sizeof(abi_ulong), q++) {
8459 if (get_user_ual(addr, gp)) {
8460 goto execve_efault;
8461 }
8462 if (!addr) {
8463 break;
8464 }
8465 *q = lock_user_string(addr);
8466 if (!*q) {
8467 goto execve_efault;
8468 }
8469 }
8470 *q = NULL;
8471
8472 for (gp = guest_envp, q = envp; gp; gp += sizeof(abi_ulong), q++) {
8473 if (get_user_ual(addr, gp)) {
8474 goto execve_efault;
8475 }
8476 if (!addr) {
8477 break;
8478 }
8479 *q = lock_user_string(addr);
8480 if (!*q) {
8481 goto execve_efault;
8482 }
8483 }
8484 *q = NULL;
8485
8486 /*
8487 * Although execve() is not an interruptible syscall it is
8488 * a special case where we must use the safe_syscall wrapper:
8489 * if we allow a signal to happen before we make the host
8490 * syscall then we will 'lose' it, because at the point of
8491 * execve the process leaves QEMU's control. So we use the
8492 * safe syscall wrapper to ensure that we either take the
8493 * signal as a guest signal, or else it does not happen
8494 * before the execve completes and makes it the other
8495 * program's problem.
8496 */
8497 p = lock_user_string(pathname);
8498 if (!p) {
8499 goto execve_efault;
8500 }
8501
8502 if (is_proc_myself(p, "exe")) {
8503 ret = get_errno(safe_execveat(dirfd, exec_path, argp, envp, flags));
8504 } else {
8505 ret = get_errno(safe_execveat(dirfd, p, argp, envp, flags));
8506 }
8507
8508 unlock_user(p, pathname, 0);
8509
8510 goto execve_end;
8511
8512 execve_efault:
8513 ret = -TARGET_EFAULT;
8514
8515 execve_end:
8516 for (gp = guest_argp, q = argp; *q; gp += sizeof(abi_ulong), q++) {
8517 if (get_user_ual(addr, gp) || !addr) {
8518 break;
8519 }
8520 unlock_user(*q, addr, 0);
8521 }
8522 for (gp = guest_envp, q = envp; *q; gp += sizeof(abi_ulong), q++) {
8523 if (get_user_ual(addr, gp) || !addr) {
8524 break;
8525 }
8526 unlock_user(*q, addr, 0);
8527 }
8528
8529 g_free(argp);
8530 g_free(envp);
8531 return ret;
8532 }
8533
8534 #define TIMER_MAGIC 0x0caf0000
8535 #define TIMER_MAGIC_MASK 0xffff0000
8536
8537 /* Convert QEMU provided timer ID back to internal 16bit index format */
8538 static target_timer_t get_timer_id(abi_long arg)
8539 {
8540 target_timer_t timerid = arg;
8541
8542 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
8543 return -TARGET_EINVAL;
8544 }
8545
8546 timerid &= 0xffff;
8547
8548 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
8549 return -TARGET_EINVAL;
8550 }
8551
8552 return timerid;
8553 }
8554
8555 static int target_to_host_cpu_mask(unsigned long *host_mask,
8556 size_t host_size,
8557 abi_ulong target_addr,
8558 size_t target_size)
8559 {
8560 unsigned target_bits = sizeof(abi_ulong) * 8;
8561 unsigned host_bits = sizeof(*host_mask) * 8;
8562 abi_ulong *target_mask;
8563 unsigned i, j;
8564
8565 assert(host_size >= target_size);
8566
8567 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
8568 if (!target_mask) {
8569 return -TARGET_EFAULT;
8570 }
8571 memset(host_mask, 0, host_size);
8572
8573 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8574 unsigned bit = i * target_bits;
8575 abi_ulong val;
8576
8577 __get_user(val, &target_mask[i]);
8578 for (j = 0; j < target_bits; j++, bit++) {
8579 if (val & (1UL << j)) {
8580 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
8581 }
8582 }
8583 }
8584
8585 unlock_user(target_mask, target_addr, 0);
8586 return 0;
8587 }
8588
8589 static int host_to_target_cpu_mask(const unsigned long *host_mask,
8590 size_t host_size,
8591 abi_ulong target_addr,
8592 size_t target_size)
8593 {
8594 unsigned target_bits = sizeof(abi_ulong) * 8;
8595 unsigned host_bits = sizeof(*host_mask) * 8;
8596 abi_ulong *target_mask;
8597 unsigned i, j;
8598
8599 assert(host_size >= target_size);
8600
8601 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
8602 if (!target_mask) {
8603 return -TARGET_EFAULT;
8604 }
8605
8606 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8607 unsigned bit = i * target_bits;
8608 abi_ulong val = 0;
8609
8610 for (j = 0; j < target_bits; j++, bit++) {
8611 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
8612 val |= 1UL << j;
8613 }
8614 }
8615 __put_user(val, &target_mask[i]);
8616 }
8617
8618 unlock_user(target_mask, target_addr, target_size);
8619 return 0;
8620 }
8621
8622 #ifdef TARGET_NR_getdents
8623 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count)
8624 {
8625 g_autofree void *hdirp = NULL;
8626 void *tdirp;
8627 int hlen, hoff, toff;
8628 int hreclen, treclen;
8629 off64_t prev_diroff = 0;
8630
8631 hdirp = g_try_malloc(count);
8632 if (!hdirp) {
8633 return -TARGET_ENOMEM;
8634 }
8635
8636 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8637 hlen = sys_getdents(dirfd, hdirp, count);
8638 #else
8639 hlen = sys_getdents64(dirfd, hdirp, count);
8640 #endif
8641
8642 hlen = get_errno(hlen);
8643 if (is_error(hlen)) {
8644 return hlen;
8645 }
8646
8647 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8648 if (!tdirp) {
8649 return -TARGET_EFAULT;
8650 }
8651
8652 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8653 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8654 struct linux_dirent *hde = hdirp + hoff;
8655 #else
8656 struct linux_dirent64 *hde = hdirp + hoff;
8657 #endif
8658 struct target_dirent *tde = tdirp + toff;
8659 int namelen;
8660 uint8_t type;
8661
8662 namelen = strlen(hde->d_name);
8663 hreclen = hde->d_reclen;
8664 treclen = offsetof(struct target_dirent, d_name) + namelen + 2;
8665 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent));
8666
8667 if (toff + treclen > count) {
8668 /*
8669 * If the host struct is smaller than the target struct, or
8670 * requires less alignment and thus packs into less space,
8671 * then the host can return more entries than we can pass
8672 * on to the guest.
8673 */
8674 if (toff == 0) {
8675 toff = -TARGET_EINVAL; /* result buffer is too small */
8676 break;
8677 }
8678 /*
8679 * Return what we have, resetting the file pointer to the
8680 * location of the first record not returned.
8681 */
8682 lseek64(dirfd, prev_diroff, SEEK_SET);
8683 break;
8684 }
8685
8686 prev_diroff = hde->d_off;
8687 tde->d_ino = tswapal(hde->d_ino);
8688 tde->d_off = tswapal(hde->d_off);
8689 tde->d_reclen = tswap16(treclen);
8690 memcpy(tde->d_name, hde->d_name, namelen + 1);
8691
8692 /*
8693 * The getdents type is in what was formerly a padding byte at the
8694 * end of the structure.
8695 */
8696 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8697 type = *((uint8_t *)hde + hreclen - 1);
8698 #else
8699 type = hde->d_type;
8700 #endif
8701 *((uint8_t *)tde + treclen - 1) = type;
8702 }
8703
8704 unlock_user(tdirp, arg2, toff);
8705 return toff;
8706 }
8707 #endif /* TARGET_NR_getdents */
8708
8709 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
8710 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count)
8711 {
8712 g_autofree void *hdirp = NULL;
8713 void *tdirp;
8714 int hlen, hoff, toff;
8715 int hreclen, treclen;
8716 off64_t prev_diroff = 0;
8717
8718 hdirp = g_try_malloc(count);
8719 if (!hdirp) {
8720 return -TARGET_ENOMEM;
8721 }
8722
8723 hlen = get_errno(sys_getdents64(dirfd, hdirp, count));
8724 if (is_error(hlen)) {
8725 return hlen;
8726 }
8727
8728 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8729 if (!tdirp) {
8730 return -TARGET_EFAULT;
8731 }
8732
8733 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8734 struct linux_dirent64 *hde = hdirp + hoff;
8735 struct target_dirent64 *tde = tdirp + toff;
8736 int namelen;
8737
8738 namelen = strlen(hde->d_name) + 1;
8739 hreclen = hde->d_reclen;
8740 treclen = offsetof(struct target_dirent64, d_name) + namelen;
8741 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64));
8742
8743 if (toff + treclen > count) {
8744 /*
8745 * If the host struct is smaller than the target struct, or
8746 * requires less alignment and thus packs into less space,
8747 * then the host can return more entries than we can pass
8748 * on to the guest.
8749 */
8750 if (toff == 0) {
8751 toff = -TARGET_EINVAL; /* result buffer is too small */
8752 break;
8753 }
8754 /*
8755 * Return what we have, resetting the file pointer to the
8756 * location of the first record not returned.
8757 */
8758 lseek64(dirfd, prev_diroff, SEEK_SET);
8759 break;
8760 }
8761
8762 prev_diroff = hde->d_off;
8763 tde->d_ino = tswap64(hde->d_ino);
8764 tde->d_off = tswap64(hde->d_off);
8765 tde->d_reclen = tswap16(treclen);
8766 tde->d_type = hde->d_type;
8767 memcpy(tde->d_name, hde->d_name, namelen);
8768 }
8769
8770 unlock_user(tdirp, arg2, toff);
8771 return toff;
8772 }
8773 #endif /* TARGET_NR_getdents64 */
8774
8775 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root)
8776 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
8777 #endif
8778
8779 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
8780 #define __NR_sys_open_tree __NR_open_tree
8781 _syscall3(int, sys_open_tree, int, __dfd, const char *, __filename,
8782 unsigned int, __flags)
8783 #endif
8784
8785 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
8786 #define __NR_sys_move_mount __NR_move_mount
8787 _syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname,
8788 int, __to_dfd, const char *, __to_pathname, unsigned int, flag)
8789 #endif
8790
8791 /* This is an internal helper for do_syscall so that it is easier
8792 * to have a single return point, so that actions, such as logging
8793 * of syscall results, can be performed.
8794 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
8795 */
8796 static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
8797 abi_long arg2, abi_long arg3, abi_long arg4,
8798 abi_long arg5, abi_long arg6, abi_long arg7,
8799 abi_long arg8)
8800 {
8801 CPUState *cpu = env_cpu(cpu_env);
8802 abi_long ret;
8803 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
8804 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
8805 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
8806 || defined(TARGET_NR_statx)
8807 struct stat st;
8808 #endif
8809 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
8810 || defined(TARGET_NR_fstatfs)
8811 struct statfs stfs;
8812 #endif
8813 void *p;
8814
8815 switch(num) {
8816 case TARGET_NR_exit:
8817 /* In old applications this may be used to implement _exit(2).
8818 However in threaded applications it is used for thread termination,
8819 and _exit_group is used for application termination.
8820 Do thread termination if we have more then one thread. */
8821
8822 if (block_signals()) {
8823 return -QEMU_ERESTARTSYS;
8824 }
8825
8826 pthread_mutex_lock(&clone_lock);
8827
8828 if (CPU_NEXT(first_cpu)) {
8829 TaskState *ts = cpu->opaque;
8830
8831 if (ts->child_tidptr) {
8832 put_user_u32(0, ts->child_tidptr);
8833 do_sys_futex(g2h(cpu, ts->child_tidptr),
8834 FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
8835 }
8836
8837 object_unparent(OBJECT(cpu));
8838 object_unref(OBJECT(cpu));
8839 /*
8840 * At this point the CPU should be unrealized and removed
8841 * from cpu lists. We can clean-up the rest of the thread
8842 * data without the lock held.
8843 */
8844
8845 pthread_mutex_unlock(&clone_lock);
8846
8847 thread_cpu = NULL;
8848 g_free(ts);
8849 rcu_unregister_thread();
8850 pthread_exit(NULL);
8851 }
8852
8853 pthread_mutex_unlock(&clone_lock);
8854 preexit_cleanup(cpu_env, arg1);
8855 _exit(arg1);
8856 return 0; /* avoid warning */
8857 case TARGET_NR_read:
8858 if (arg2 == 0 && arg3 == 0) {
8859 return get_errno(safe_read(arg1, 0, 0));
8860 } else {
8861 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
8862 return -TARGET_EFAULT;
8863 ret = get_errno(safe_read(arg1, p, arg3));
8864 if (ret >= 0 &&
8865 fd_trans_host_to_target_data(arg1)) {
8866 ret = fd_trans_host_to_target_data(arg1)(p, ret);
8867 }
8868 unlock_user(p, arg2, ret);
8869 }
8870 return ret;
8871 case TARGET_NR_write:
8872 if (arg2 == 0 && arg3 == 0) {
8873 return get_errno(safe_write(arg1, 0, 0));
8874 }
8875 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
8876 return -TARGET_EFAULT;
8877 if (fd_trans_target_to_host_data(arg1)) {
8878 void *copy = g_malloc(arg3);
8879 memcpy(copy, p, arg3);
8880 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
8881 if (ret >= 0) {
8882 ret = get_errno(safe_write(arg1, copy, ret));
8883 }
8884 g_free(copy);
8885 } else {
8886 ret = get_errno(safe_write(arg1, p, arg3));
8887 }
8888 unlock_user(p, arg2, 0);
8889 return ret;
8890
8891 #ifdef TARGET_NR_open
8892 case TARGET_NR_open:
8893 if (!(p = lock_user_string(arg1)))
8894 return -TARGET_EFAULT;
8895 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
8896 target_to_host_bitmask(arg2, fcntl_flags_tbl),
8897 arg3));
8898 fd_trans_unregister(ret);
8899 unlock_user(p, arg1, 0);
8900 return ret;
8901 #endif
8902 case TARGET_NR_openat:
8903 if (!(p = lock_user_string(arg2)))
8904 return -TARGET_EFAULT;
8905 ret = get_errno(do_openat(cpu_env, arg1, p,
8906 target_to_host_bitmask(arg3, fcntl_flags_tbl),
8907 arg4));
8908 fd_trans_unregister(ret);
8909 unlock_user(p, arg2, 0);
8910 return ret;
8911 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8912 case TARGET_NR_name_to_handle_at:
8913 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
8914 return ret;
8915 #endif
8916 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8917 case TARGET_NR_open_by_handle_at:
8918 ret = do_open_by_handle_at(arg1, arg2, arg3);
8919 fd_trans_unregister(ret);
8920 return ret;
8921 #endif
8922 #if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
8923 case TARGET_NR_pidfd_open:
8924 return get_errno(pidfd_open(arg1, arg2));
8925 #endif
8926 #if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal)
8927 case TARGET_NR_pidfd_send_signal:
8928 {
8929 siginfo_t uinfo, *puinfo;
8930
8931 if (arg3) {
8932 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8933 if (!p) {
8934 return -TARGET_EFAULT;
8935 }
8936 target_to_host_siginfo(&uinfo, p);
8937 unlock_user(p, arg3, 0);
8938 puinfo = &uinfo;
8939 } else {
8940 puinfo = NULL;
8941 }
8942 ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2),
8943 puinfo, arg4));
8944 }
8945 return ret;
8946 #endif
8947 #if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd)
8948 case TARGET_NR_pidfd_getfd:
8949 return get_errno(pidfd_getfd(arg1, arg2, arg3));
8950 #endif
8951 case TARGET_NR_close:
8952 fd_trans_unregister(arg1);
8953 return get_errno(close(arg1));
8954 #if defined(__NR_close_range) && defined(TARGET_NR_close_range)
8955 case TARGET_NR_close_range:
8956 ret = get_errno(sys_close_range(arg1, arg2, arg3));
8957 if (ret == 0 && !(arg3 & CLOSE_RANGE_CLOEXEC)) {
8958 abi_long fd, maxfd;
8959 maxfd = MIN(arg2, target_fd_max);
8960 for (fd = arg1; fd < maxfd; fd++) {
8961 fd_trans_unregister(fd);
8962 }
8963 }
8964 return ret;
8965 #endif
8966
8967 case TARGET_NR_brk:
8968 return do_brk(arg1);
8969 #ifdef TARGET_NR_fork
8970 case TARGET_NR_fork:
8971 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
8972 #endif
8973 #ifdef TARGET_NR_waitpid
8974 case TARGET_NR_waitpid:
8975 {
8976 int status;
8977 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
8978 if (!is_error(ret) && arg2 && ret
8979 && put_user_s32(host_to_target_waitstatus(status), arg2))
8980 return -TARGET_EFAULT;
8981 }
8982 return ret;
8983 #endif
8984 #ifdef TARGET_NR_waitid
8985 case TARGET_NR_waitid:
8986 {
8987 siginfo_t info;
8988 info.si_pid = 0;
8989 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
8990 if (!is_error(ret) && arg3 && info.si_pid != 0) {
8991 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
8992 return -TARGET_EFAULT;
8993 host_to_target_siginfo(p, &info);
8994 unlock_user(p, arg3, sizeof(target_siginfo_t));
8995 }
8996 }
8997 return ret;
8998 #endif
8999 #ifdef TARGET_NR_creat /* not on alpha */
9000 case TARGET_NR_creat:
9001 if (!(p = lock_user_string(arg1)))
9002 return -TARGET_EFAULT;
9003 ret = get_errno(creat(p, arg2));
9004 fd_trans_unregister(ret);
9005 unlock_user(p, arg1, 0);
9006 return ret;
9007 #endif
9008 #ifdef TARGET_NR_link
9009 case TARGET_NR_link:
9010 {
9011 void * p2;
9012 p = lock_user_string(arg1);
9013 p2 = lock_user_string(arg2);
9014 if (!p || !p2)
9015 ret = -TARGET_EFAULT;
9016 else
9017 ret = get_errno(link(p, p2));
9018 unlock_user(p2, arg2, 0);
9019 unlock_user(p, arg1, 0);
9020 }
9021 return ret;
9022 #endif
9023 #if defined(TARGET_NR_linkat)
9024 case TARGET_NR_linkat:
9025 {
9026 void * p2 = NULL;
9027 if (!arg2 || !arg4)
9028 return -TARGET_EFAULT;
9029 p = lock_user_string(arg2);
9030 p2 = lock_user_string(arg4);
9031 if (!p || !p2)
9032 ret = -TARGET_EFAULT;
9033 else
9034 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
9035 unlock_user(p, arg2, 0);
9036 unlock_user(p2, arg4, 0);
9037 }
9038 return ret;
9039 #endif
9040 #ifdef TARGET_NR_unlink
9041 case TARGET_NR_unlink:
9042 if (!(p = lock_user_string(arg1)))
9043 return -TARGET_EFAULT;
9044 ret = get_errno(unlink(p));
9045 unlock_user(p, arg1, 0);
9046 return ret;
9047 #endif
9048 #if defined(TARGET_NR_unlinkat)
9049 case TARGET_NR_unlinkat:
9050 if (!(p = lock_user_string(arg2)))
9051 return -TARGET_EFAULT;
9052 ret = get_errno(unlinkat(arg1, p, arg3));
9053 unlock_user(p, arg2, 0);
9054 return ret;
9055 #endif
9056 case TARGET_NR_execveat:
9057 return do_execveat(cpu_env, arg1, arg2, arg3, arg4, arg5);
9058 case TARGET_NR_execve:
9059 return do_execveat(cpu_env, AT_FDCWD, arg1, arg2, arg3, 0);
9060 case TARGET_NR_chdir:
9061 if (!(p = lock_user_string(arg1)))
9062 return -TARGET_EFAULT;
9063 ret = get_errno(chdir(p));
9064 unlock_user(p, arg1, 0);
9065 return ret;
9066 #ifdef TARGET_NR_time
9067 case TARGET_NR_time:
9068 {
9069 time_t host_time;
9070 ret = get_errno(time(&host_time));
9071 if (!is_error(ret)
9072 && arg1
9073 && put_user_sal(host_time, arg1))
9074 return -TARGET_EFAULT;
9075 }
9076 return ret;
9077 #endif
9078 #ifdef TARGET_NR_mknod
9079 case TARGET_NR_mknod:
9080 if (!(p = lock_user_string(arg1)))
9081 return -TARGET_EFAULT;
9082 ret = get_errno(mknod(p, arg2, arg3));
9083 unlock_user(p, arg1, 0);
9084 return ret;
9085 #endif
9086 #if defined(TARGET_NR_mknodat)
9087 case TARGET_NR_mknodat:
9088 if (!(p = lock_user_string(arg2)))
9089 return -TARGET_EFAULT;
9090 ret = get_errno(mknodat(arg1, p, arg3, arg4));
9091 unlock_user(p, arg2, 0);
9092 return ret;
9093 #endif
9094 #ifdef TARGET_NR_chmod
9095 case TARGET_NR_chmod:
9096 if (!(p = lock_user_string(arg1)))
9097 return -TARGET_EFAULT;
9098 ret = get_errno(chmod(p, arg2));
9099 unlock_user(p, arg1, 0);
9100 return ret;
9101 #endif
9102 #ifdef TARGET_NR_lseek
9103 case TARGET_NR_lseek:
9104 return get_errno(lseek(arg1, arg2, arg3));
9105 #endif
9106 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
9107 /* Alpha specific */
9108 case TARGET_NR_getxpid:
9109 cpu_env->ir[IR_A4] = getppid();
9110 return get_errno(getpid());
9111 #endif
9112 #ifdef TARGET_NR_getpid
9113 case TARGET_NR_getpid:
9114 return get_errno(getpid());
9115 #endif
9116 case TARGET_NR_mount:
9117 {
9118 /* need to look at the data field */
9119 void *p2, *p3;
9120
9121 if (arg1) {
9122 p = lock_user_string(arg1);
9123 if (!p) {
9124 return -TARGET_EFAULT;
9125 }
9126 } else {
9127 p = NULL;
9128 }
9129
9130 p2 = lock_user_string(arg2);
9131 if (!p2) {
9132 if (arg1) {
9133 unlock_user(p, arg1, 0);
9134 }
9135 return -TARGET_EFAULT;
9136 }
9137
9138 if (arg3) {
9139 p3 = lock_user_string(arg3);
9140 if (!p3) {
9141 if (arg1) {
9142 unlock_user(p, arg1, 0);
9143 }
9144 unlock_user(p2, arg2, 0);
9145 return -TARGET_EFAULT;
9146 }
9147 } else {
9148 p3 = NULL;
9149 }
9150
9151 /* FIXME - arg5 should be locked, but it isn't clear how to
9152 * do that since it's not guaranteed to be a NULL-terminated
9153 * string.
9154 */
9155 if (!arg5) {
9156 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
9157 } else {
9158 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5));
9159 }
9160 ret = get_errno(ret);
9161
9162 if (arg1) {
9163 unlock_user(p, arg1, 0);
9164 }
9165 unlock_user(p2, arg2, 0);
9166 if (arg3) {
9167 unlock_user(p3, arg3, 0);
9168 }
9169 }
9170 return ret;
9171 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount)
9172 #if defined(TARGET_NR_umount)
9173 case TARGET_NR_umount:
9174 #endif
9175 #if defined(TARGET_NR_oldumount)
9176 case TARGET_NR_oldumount:
9177 #endif
9178 if (!(p = lock_user_string(arg1)))
9179 return -TARGET_EFAULT;
9180 ret = get_errno(umount(p));
9181 unlock_user(p, arg1, 0);
9182 return ret;
9183 #endif
9184 #if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
9185 case TARGET_NR_move_mount:
9186 {
9187 void *p2, *p4;
9188
9189 if (!arg2 || !arg4) {
9190 return -TARGET_EFAULT;
9191 }
9192
9193 p2 = lock_user_string(arg2);
9194 if (!p2) {
9195 return -TARGET_EFAULT;
9196 }
9197
9198 p4 = lock_user_string(arg4);
9199 if (!p4) {
9200 unlock_user(p2, arg2, 0);
9201 return -TARGET_EFAULT;
9202 }
9203 ret = get_errno(sys_move_mount(arg1, p2, arg3, p4, arg5));
9204
9205 unlock_user(p2, arg2, 0);
9206 unlock_user(p4, arg4, 0);
9207
9208 return ret;
9209 }
9210 #endif
9211 #if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
9212 case TARGET_NR_open_tree:
9213 {
9214 void *p2;
9215 int host_flags;
9216
9217 if (!arg2) {
9218 return -TARGET_EFAULT;
9219 }
9220
9221 p2 = lock_user_string(arg2);
9222 if (!p2) {
9223 return -TARGET_EFAULT;
9224 }
9225
9226 host_flags = arg3 & ~TARGET_O_CLOEXEC;
9227 if (arg3 & TARGET_O_CLOEXEC) {
9228 host_flags |= O_CLOEXEC;
9229 }
9230
9231 ret = get_errno(sys_open_tree(arg1, p2, host_flags));
9232
9233 unlock_user(p2, arg2, 0);
9234
9235 return ret;
9236 }
9237 #endif
9238 #ifdef TARGET_NR_stime /* not on alpha */
9239 case TARGET_NR_stime:
9240 {
9241 struct timespec ts;
9242 ts.tv_nsec = 0;
9243 if (get_user_sal(ts.tv_sec, arg1)) {
9244 return -TARGET_EFAULT;
9245 }
9246 return get_errno(clock_settime(CLOCK_REALTIME, &ts));
9247 }
9248 #endif
9249 #ifdef TARGET_NR_alarm /* not on alpha */
9250 case TARGET_NR_alarm:
9251 return alarm(arg1);
9252 #endif
9253 #ifdef TARGET_NR_pause /* not on alpha */
9254 case TARGET_NR_pause:
9255 if (!block_signals()) {
9256 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
9257 }
9258 return -TARGET_EINTR;
9259 #endif
9260 #ifdef TARGET_NR_utime
9261 case TARGET_NR_utime:
9262 {
9263 struct utimbuf tbuf, *host_tbuf;
9264 struct target_utimbuf *target_tbuf;
9265 if (arg2) {
9266 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
9267 return -TARGET_EFAULT;
9268 tbuf.actime = tswapal(target_tbuf->actime);
9269 tbuf.modtime = tswapal(target_tbuf->modtime);
9270 unlock_user_struct(target_tbuf, arg2, 0);
9271 host_tbuf = &tbuf;
9272 } else {
9273 host_tbuf = NULL;
9274 }
9275 if (!(p = lock_user_string(arg1)))
9276 return -TARGET_EFAULT;
9277 ret = get_errno(utime(p, host_tbuf));
9278 unlock_user(p, arg1, 0);
9279 }
9280 return ret;
9281 #endif
9282 #ifdef TARGET_NR_utimes
9283 case TARGET_NR_utimes:
9284 {
9285 struct timeval *tvp, tv[2];
9286 if (arg2) {
9287 if (copy_from_user_timeval(&tv[0], arg2)
9288 || copy_from_user_timeval(&tv[1],
9289 arg2 + sizeof(struct target_timeval)))
9290 return -TARGET_EFAULT;
9291 tvp = tv;
9292 } else {
9293 tvp = NULL;
9294 }
9295 if (!(p = lock_user_string(arg1)))
9296 return -TARGET_EFAULT;
9297 ret = get_errno(utimes(p, tvp));
9298 unlock_user(p, arg1, 0);
9299 }
9300 return ret;
9301 #endif
9302 #if defined(TARGET_NR_futimesat)
9303 case TARGET_NR_futimesat:
9304 {
9305 struct timeval *tvp, tv[2];
9306 if (arg3) {
9307 if (copy_from_user_timeval(&tv[0], arg3)
9308 || copy_from_user_timeval(&tv[1],
9309 arg3 + sizeof(struct target_timeval)))
9310 return -TARGET_EFAULT;
9311 tvp = tv;
9312 } else {
9313 tvp = NULL;
9314 }
9315 if (!(p = lock_user_string(arg2))) {
9316 return -TARGET_EFAULT;
9317 }
9318 ret = get_errno(futimesat(arg1, path(p), tvp));
9319 unlock_user(p, arg2, 0);
9320 }
9321 return ret;
9322 #endif
9323 #ifdef TARGET_NR_access
9324 case TARGET_NR_access:
9325 if (!(p = lock_user_string(arg1))) {
9326 return -TARGET_EFAULT;
9327 }
9328 ret = get_errno(access(path(p), arg2));
9329 unlock_user(p, arg1, 0);
9330 return ret;
9331 #endif
9332 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
9333 case TARGET_NR_faccessat:
9334 if (!(p = lock_user_string(arg2))) {
9335 return -TARGET_EFAULT;
9336 }
9337 ret = get_errno(faccessat(arg1, p, arg3, 0));
9338 unlock_user(p, arg2, 0);
9339 return ret;
9340 #endif
9341 #if defined(TARGET_NR_faccessat2)
9342 case TARGET_NR_faccessat2:
9343 if (!(p = lock_user_string(arg2))) {
9344 return -TARGET_EFAULT;
9345 }
9346 ret = get_errno(faccessat(arg1, p, arg3, arg4));
9347 unlock_user(p, arg2, 0);
9348 return ret;
9349 #endif
9350 #ifdef TARGET_NR_nice /* not on alpha */
9351 case TARGET_NR_nice:
9352 return get_errno(nice(arg1));
9353 #endif
9354 case TARGET_NR_sync:
9355 sync();
9356 return 0;
9357 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
9358 case TARGET_NR_syncfs:
9359 return get_errno(syncfs(arg1));
9360 #endif
9361 case TARGET_NR_kill:
9362 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
9363 #ifdef TARGET_NR_rename
9364 case TARGET_NR_rename:
9365 {
9366 void *p2;
9367 p = lock_user_string(arg1);
9368 p2 = lock_user_string(arg2);
9369 if (!p || !p2)
9370 ret = -TARGET_EFAULT;
9371 else
9372 ret = get_errno(rename(p, p2));
9373 unlock_user(p2, arg2, 0);
9374 unlock_user(p, arg1, 0);
9375 }
9376 return ret;
9377 #endif
9378 #if defined(TARGET_NR_renameat)
9379 case TARGET_NR_renameat:
9380 {
9381 void *p2;
9382 p = lock_user_string(arg2);
9383 p2 = lock_user_string(arg4);
9384 if (!p || !p2)
9385 ret = -TARGET_EFAULT;
9386 else
9387 ret = get_errno(renameat(arg1, p, arg3, p2));
9388 unlock_user(p2, arg4, 0);
9389 unlock_user(p, arg2, 0);
9390 }
9391 return ret;
9392 #endif
9393 #if defined(TARGET_NR_renameat2)
9394 case TARGET_NR_renameat2:
9395 {
9396 void *p2;
9397 p = lock_user_string(arg2);
9398 p2 = lock_user_string(arg4);
9399 if (!p || !p2) {
9400 ret = -TARGET_EFAULT;
9401 } else {
9402 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
9403 }
9404 unlock_user(p2, arg4, 0);
9405 unlock_user(p, arg2, 0);
9406 }
9407 return ret;
9408 #endif
9409 #ifdef TARGET_NR_mkdir
9410 case TARGET_NR_mkdir:
9411 if (!(p = lock_user_string(arg1)))
9412 return -TARGET_EFAULT;
9413 ret = get_errno(mkdir(p, arg2));
9414 unlock_user(p, arg1, 0);
9415 return ret;
9416 #endif
9417 #if defined(TARGET_NR_mkdirat)
9418 case TARGET_NR_mkdirat:
9419 if (!(p = lock_user_string(arg2)))
9420 return -TARGET_EFAULT;
9421 ret = get_errno(mkdirat(arg1, p, arg3));
9422 unlock_user(p, arg2, 0);
9423 return ret;
9424 #endif
9425 #ifdef TARGET_NR_rmdir
9426 case TARGET_NR_rmdir:
9427 if (!(p = lock_user_string(arg1)))
9428 return -TARGET_EFAULT;
9429 ret = get_errno(rmdir(p));
9430 unlock_user(p, arg1, 0);
9431 return ret;
9432 #endif
9433 case TARGET_NR_dup:
9434 ret = get_errno(dup(arg1));
9435 if (ret >= 0) {
9436 fd_trans_dup(arg1, ret);
9437 }
9438 return ret;
9439 #ifdef TARGET_NR_pipe
9440 case TARGET_NR_pipe:
9441 return do_pipe(cpu_env, arg1, 0, 0);
9442 #endif
9443 #ifdef TARGET_NR_pipe2
9444 case TARGET_NR_pipe2:
9445 return do_pipe(cpu_env, arg1,
9446 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
9447 #endif
9448 case TARGET_NR_times:
9449 {
9450 struct target_tms *tmsp;
9451 struct tms tms;
9452 ret = get_errno(times(&tms));
9453 if (arg1) {
9454 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
9455 if (!tmsp)
9456 return -TARGET_EFAULT;
9457 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
9458 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
9459 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
9460 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
9461 }
9462 if (!is_error(ret))
9463 ret = host_to_target_clock_t(ret);
9464 }
9465 return ret;
9466 case TARGET_NR_acct:
9467 if (arg1 == 0) {
9468 ret = get_errno(acct(NULL));
9469 } else {
9470 if (!(p = lock_user_string(arg1))) {
9471 return -TARGET_EFAULT;
9472 }
9473 ret = get_errno(acct(path(p)));
9474 unlock_user(p, arg1, 0);
9475 }
9476 return ret;
9477 #ifdef TARGET_NR_umount2
9478 case TARGET_NR_umount2:
9479 if (!(p = lock_user_string(arg1)))
9480 return -TARGET_EFAULT;
9481 ret = get_errno(umount2(p, arg2));
9482 unlock_user(p, arg1, 0);
9483 return ret;
9484 #endif
9485 case TARGET_NR_ioctl:
9486 return do_ioctl(arg1, arg2, arg3);
9487 #ifdef TARGET_NR_fcntl
9488 case TARGET_NR_fcntl:
9489 return do_fcntl(arg1, arg2, arg3);
9490 #endif
9491 case TARGET_NR_setpgid:
9492 return get_errno(setpgid(arg1, arg2));
9493 case TARGET_NR_umask:
9494 return get_errno(umask(arg1));
9495 case TARGET_NR_chroot:
9496 if (!(p = lock_user_string(arg1)))
9497 return -TARGET_EFAULT;
9498 ret = get_errno(chroot(p));
9499 unlock_user(p, arg1, 0);
9500 return ret;
9501 #ifdef TARGET_NR_dup2
9502 case TARGET_NR_dup2:
9503 ret = get_errno(dup2(arg1, arg2));
9504 if (ret >= 0) {
9505 fd_trans_dup(arg1, arg2);
9506 }
9507 return ret;
9508 #endif
9509 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
9510 case TARGET_NR_dup3:
9511 {
9512 int host_flags;
9513
9514 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
9515 return -EINVAL;
9516 }
9517 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
9518 ret = get_errno(dup3(arg1, arg2, host_flags));
9519 if (ret >= 0) {
9520 fd_trans_dup(arg1, arg2);
9521 }
9522 return ret;
9523 }
9524 #endif
9525 #ifdef TARGET_NR_getppid /* not on alpha */
9526 case TARGET_NR_getppid:
9527 return get_errno(getppid());
9528 #endif
9529 #ifdef TARGET_NR_getpgrp
9530 case TARGET_NR_getpgrp:
9531 return get_errno(getpgrp());
9532 #endif
9533 case TARGET_NR_setsid:
9534 return get_errno(setsid());
9535 #ifdef TARGET_NR_sigaction
9536 case TARGET_NR_sigaction:
9537 {
9538 #if defined(TARGET_MIPS)
9539 struct target_sigaction act, oact, *pact, *old_act;
9540
9541 if (arg2) {
9542 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9543 return -TARGET_EFAULT;
9544 act._sa_handler = old_act->_sa_handler;
9545 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
9546 act.sa_flags = old_act->sa_flags;
9547 unlock_user_struct(old_act, arg2, 0);
9548 pact = &act;
9549 } else {
9550 pact = NULL;
9551 }
9552
9553 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9554
9555 if (!is_error(ret) && arg3) {
9556 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9557 return -TARGET_EFAULT;
9558 old_act->_sa_handler = oact._sa_handler;
9559 old_act->sa_flags = oact.sa_flags;
9560 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
9561 old_act->sa_mask.sig[1] = 0;
9562 old_act->sa_mask.sig[2] = 0;
9563 old_act->sa_mask.sig[3] = 0;
9564 unlock_user_struct(old_act, arg3, 1);
9565 }
9566 #else
9567 struct target_old_sigaction *old_act;
9568 struct target_sigaction act, oact, *pact;
9569 if (arg2) {
9570 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9571 return -TARGET_EFAULT;
9572 act._sa_handler = old_act->_sa_handler;
9573 target_siginitset(&act.sa_mask, old_act->sa_mask);
9574 act.sa_flags = old_act->sa_flags;
9575 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9576 act.sa_restorer = old_act->sa_restorer;
9577 #endif
9578 unlock_user_struct(old_act, arg2, 0);
9579 pact = &act;
9580 } else {
9581 pact = NULL;
9582 }
9583 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9584 if (!is_error(ret) && arg3) {
9585 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9586 return -TARGET_EFAULT;
9587 old_act->_sa_handler = oact._sa_handler;
9588 old_act->sa_mask = oact.sa_mask.sig[0];
9589 old_act->sa_flags = oact.sa_flags;
9590 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9591 old_act->sa_restorer = oact.sa_restorer;
9592 #endif
9593 unlock_user_struct(old_act, arg3, 1);
9594 }
9595 #endif
9596 }
9597 return ret;
9598 #endif
9599 case TARGET_NR_rt_sigaction:
9600 {
9601 /*
9602 * For Alpha and SPARC this is a 5 argument syscall, with
9603 * a 'restorer' parameter which must be copied into the
9604 * sa_restorer field of the sigaction struct.
9605 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
9606 * and arg5 is the sigsetsize.
9607 */
9608 #if defined(TARGET_ALPHA)
9609 target_ulong sigsetsize = arg4;
9610 target_ulong restorer = arg5;
9611 #elif defined(TARGET_SPARC)
9612 target_ulong restorer = arg4;
9613 target_ulong sigsetsize = arg5;
9614 #else
9615 target_ulong sigsetsize = arg4;
9616 target_ulong restorer = 0;
9617 #endif
9618 struct target_sigaction *act = NULL;
9619 struct target_sigaction *oact = NULL;
9620
9621 if (sigsetsize != sizeof(target_sigset_t)) {
9622 return -TARGET_EINVAL;
9623 }
9624 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) {
9625 return -TARGET_EFAULT;
9626 }
9627 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
9628 ret = -TARGET_EFAULT;
9629 } else {
9630 ret = get_errno(do_sigaction(arg1, act, oact, restorer));
9631 if (oact) {
9632 unlock_user_struct(oact, arg3, 1);
9633 }
9634 }
9635 if (act) {
9636 unlock_user_struct(act, arg2, 0);
9637 }
9638 }
9639 return ret;
9640 #ifdef TARGET_NR_sgetmask /* not on alpha */
9641 case TARGET_NR_sgetmask:
9642 {
9643 sigset_t cur_set;
9644 abi_ulong target_set;
9645 ret = do_sigprocmask(0, NULL, &cur_set);
9646 if (!ret) {
9647 host_to_target_old_sigset(&target_set, &cur_set);
9648 ret = target_set;
9649 }
9650 }
9651 return ret;
9652 #endif
9653 #ifdef TARGET_NR_ssetmask /* not on alpha */
9654 case TARGET_NR_ssetmask:
9655 {
9656 sigset_t set, oset;
9657 abi_ulong target_set = arg1;
9658 target_to_host_old_sigset(&set, &target_set);
9659 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
9660 if (!ret) {
9661 host_to_target_old_sigset(&target_set, &oset);
9662 ret = target_set;
9663 }
9664 }
9665 return ret;
9666 #endif
9667 #ifdef TARGET_NR_sigprocmask
9668 case TARGET_NR_sigprocmask:
9669 {
9670 #if defined(TARGET_ALPHA)
9671 sigset_t set, oldset;
9672 abi_ulong mask;
9673 int how;
9674
9675 switch (arg1) {
9676 case TARGET_SIG_BLOCK:
9677 how = SIG_BLOCK;
9678 break;
9679 case TARGET_SIG_UNBLOCK:
9680 how = SIG_UNBLOCK;
9681 break;
9682 case TARGET_SIG_SETMASK:
9683 how = SIG_SETMASK;
9684 break;
9685 default:
9686 return -TARGET_EINVAL;
9687 }
9688 mask = arg2;
9689 target_to_host_old_sigset(&set, &mask);
9690
9691 ret = do_sigprocmask(how, &set, &oldset);
9692 if (!is_error(ret)) {
9693 host_to_target_old_sigset(&mask, &oldset);
9694 ret = mask;
9695 cpu_env->ir[IR_V0] = 0; /* force no error */
9696 }
9697 #else
9698 sigset_t set, oldset, *set_ptr;
9699 int how;
9700
9701 if (arg2) {
9702 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
9703 if (!p) {
9704 return -TARGET_EFAULT;
9705 }
9706 target_to_host_old_sigset(&set, p);
9707 unlock_user(p, arg2, 0);
9708 set_ptr = &set;
9709 switch (arg1) {
9710 case TARGET_SIG_BLOCK:
9711 how = SIG_BLOCK;
9712 break;
9713 case TARGET_SIG_UNBLOCK:
9714 how = SIG_UNBLOCK;
9715 break;
9716 case TARGET_SIG_SETMASK:
9717 how = SIG_SETMASK;
9718 break;
9719 default:
9720 return -TARGET_EINVAL;
9721 }
9722 } else {
9723 how = 0;
9724 set_ptr = NULL;
9725 }
9726 ret = do_sigprocmask(how, set_ptr, &oldset);
9727 if (!is_error(ret) && arg3) {
9728 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9729 return -TARGET_EFAULT;
9730 host_to_target_old_sigset(p, &oldset);
9731 unlock_user(p, arg3, sizeof(target_sigset_t));
9732 }
9733 #endif
9734 }
9735 return ret;
9736 #endif
9737 case TARGET_NR_rt_sigprocmask:
9738 {
9739 int how = arg1;
9740 sigset_t set, oldset, *set_ptr;
9741
9742 if (arg4 != sizeof(target_sigset_t)) {
9743 return -TARGET_EINVAL;
9744 }
9745
9746 if (arg2) {
9747 p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
9748 if (!p) {
9749 return -TARGET_EFAULT;
9750 }
9751 target_to_host_sigset(&set, p);
9752 unlock_user(p, arg2, 0);
9753 set_ptr = &set;
9754 switch(how) {
9755 case TARGET_SIG_BLOCK:
9756 how = SIG_BLOCK;
9757 break;
9758 case TARGET_SIG_UNBLOCK:
9759 how = SIG_UNBLOCK;
9760 break;
9761 case TARGET_SIG_SETMASK:
9762 how = SIG_SETMASK;
9763 break;
9764 default:
9765 return -TARGET_EINVAL;
9766 }
9767 } else {
9768 how = 0;
9769 set_ptr = NULL;
9770 }
9771 ret = do_sigprocmask(how, set_ptr, &oldset);
9772 if (!is_error(ret) && arg3) {
9773 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9774 return -TARGET_EFAULT;
9775 host_to_target_sigset(p, &oldset);
9776 unlock_user(p, arg3, sizeof(target_sigset_t));
9777 }
9778 }
9779 return ret;
9780 #ifdef TARGET_NR_sigpending
9781 case TARGET_NR_sigpending:
9782 {
9783 sigset_t set;
9784 ret = get_errno(sigpending(&set));
9785 if (!is_error(ret)) {
9786 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9787 return -TARGET_EFAULT;
9788 host_to_target_old_sigset(p, &set);
9789 unlock_user(p, arg1, sizeof(target_sigset_t));
9790 }
9791 }
9792 return ret;
9793 #endif
9794 case TARGET_NR_rt_sigpending:
9795 {
9796 sigset_t set;
9797
9798 /* Yes, this check is >, not != like most. We follow the kernel's
9799 * logic and it does it like this because it implements
9800 * NR_sigpending through the same code path, and in that case
9801 * the old_sigset_t is smaller in size.
9802 */
9803 if (arg2 > sizeof(target_sigset_t)) {
9804 return -TARGET_EINVAL;
9805 }
9806
9807 ret = get_errno(sigpending(&set));
9808 if (!is_error(ret)) {
9809 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9810 return -TARGET_EFAULT;
9811 host_to_target_sigset(p, &set);
9812 unlock_user(p, arg1, sizeof(target_sigset_t));
9813 }
9814 }
9815 return ret;
9816 #ifdef TARGET_NR_sigsuspend
9817 case TARGET_NR_sigsuspend:
9818 {
9819 sigset_t *set;
9820
9821 #if defined(TARGET_ALPHA)
9822 TaskState *ts = cpu->opaque;
9823 /* target_to_host_old_sigset will bswap back */
9824 abi_ulong mask = tswapal(arg1);
9825 set = &ts->sigsuspend_mask;
9826 target_to_host_old_sigset(set, &mask);
9827 #else
9828 ret = process_sigsuspend_mask(&set, arg1, sizeof(target_sigset_t));
9829 if (ret != 0) {
9830 return ret;
9831 }
9832 #endif
9833 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE));
9834 finish_sigsuspend_mask(ret);
9835 }
9836 return ret;
9837 #endif
9838 case TARGET_NR_rt_sigsuspend:
9839 {
9840 sigset_t *set;
9841
9842 ret = process_sigsuspend_mask(&set, arg1, arg2);
9843 if (ret != 0) {
9844 return ret;
9845 }
9846 ret = get_errno(safe_rt_sigsuspend(set, SIGSET_T_SIZE));
9847 finish_sigsuspend_mask(ret);
9848 }
9849 return ret;
9850 #ifdef TARGET_NR_rt_sigtimedwait
9851 case TARGET_NR_rt_sigtimedwait:
9852 {
9853 sigset_t set;
9854 struct timespec uts, *puts;
9855 siginfo_t uinfo;
9856
9857 if (arg4 != sizeof(target_sigset_t)) {
9858 return -TARGET_EINVAL;
9859 }
9860
9861 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9862 return -TARGET_EFAULT;
9863 target_to_host_sigset(&set, p);
9864 unlock_user(p, arg1, 0);
9865 if (arg3) {
9866 puts = &uts;
9867 if (target_to_host_timespec(puts, arg3)) {
9868 return -TARGET_EFAULT;
9869 }
9870 } else {
9871 puts = NULL;
9872 }
9873 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9874 SIGSET_T_SIZE));
9875 if (!is_error(ret)) {
9876 if (arg2) {
9877 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
9878 0);
9879 if (!p) {
9880 return -TARGET_EFAULT;
9881 }
9882 host_to_target_siginfo(p, &uinfo);
9883 unlock_user(p, arg2, sizeof(target_siginfo_t));
9884 }
9885 ret = host_to_target_signal(ret);
9886 }
9887 }
9888 return ret;
9889 #endif
9890 #ifdef TARGET_NR_rt_sigtimedwait_time64
9891 case TARGET_NR_rt_sigtimedwait_time64:
9892 {
9893 sigset_t set;
9894 struct timespec uts, *puts;
9895 siginfo_t uinfo;
9896
9897 if (arg4 != sizeof(target_sigset_t)) {
9898 return -TARGET_EINVAL;
9899 }
9900
9901 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
9902 if (!p) {
9903 return -TARGET_EFAULT;
9904 }
9905 target_to_host_sigset(&set, p);
9906 unlock_user(p, arg1, 0);
9907 if (arg3) {
9908 puts = &uts;
9909 if (target_to_host_timespec64(puts, arg3)) {
9910 return -TARGET_EFAULT;
9911 }
9912 } else {
9913 puts = NULL;
9914 }
9915 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9916 SIGSET_T_SIZE));
9917 if (!is_error(ret)) {
9918 if (arg2) {
9919 p = lock_user(VERIFY_WRITE, arg2,
9920 sizeof(target_siginfo_t), 0);
9921 if (!p) {
9922 return -TARGET_EFAULT;
9923 }
9924 host_to_target_siginfo(p, &uinfo);
9925 unlock_user(p, arg2, sizeof(target_siginfo_t));
9926 }
9927 ret = host_to_target_signal(ret);
9928 }
9929 }
9930 return ret;
9931 #endif
9932 case TARGET_NR_rt_sigqueueinfo:
9933 {
9934 siginfo_t uinfo;
9935
9936 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
9937 if (!p) {
9938 return -TARGET_EFAULT;
9939 }
9940 target_to_host_siginfo(&uinfo, p);
9941 unlock_user(p, arg3, 0);
9942 ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo));
9943 }
9944 return ret;
9945 case TARGET_NR_rt_tgsigqueueinfo:
9946 {
9947 siginfo_t uinfo;
9948
9949 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
9950 if (!p) {
9951 return -TARGET_EFAULT;
9952 }
9953 target_to_host_siginfo(&uinfo, p);
9954 unlock_user(p, arg4, 0);
9955 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo));
9956 }
9957 return ret;
9958 #ifdef TARGET_NR_sigreturn
9959 case TARGET_NR_sigreturn:
9960 if (block_signals()) {
9961 return -QEMU_ERESTARTSYS;
9962 }
9963 return do_sigreturn(cpu_env);
9964 #endif
9965 case TARGET_NR_rt_sigreturn:
9966 if (block_signals()) {
9967 return -QEMU_ERESTARTSYS;
9968 }
9969 return do_rt_sigreturn(cpu_env);
9970 case TARGET_NR_sethostname:
9971 if (!(p = lock_user_string(arg1)))
9972 return -TARGET_EFAULT;
9973 ret = get_errno(sethostname(p, arg2));
9974 unlock_user(p, arg1, 0);
9975 return ret;
9976 #ifdef TARGET_NR_setrlimit
9977 case TARGET_NR_setrlimit:
9978 {
9979 int resource = target_to_host_resource(arg1);
9980 struct target_rlimit *target_rlim;
9981 struct rlimit rlim;
9982 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
9983 return -TARGET_EFAULT;
9984 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
9985 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
9986 unlock_user_struct(target_rlim, arg2, 0);
9987 /*
9988 * If we just passed through resource limit settings for memory then
9989 * they would also apply to QEMU's own allocations, and QEMU will
9990 * crash or hang or die if its allocations fail. Ideally we would
9991 * track the guest allocations in QEMU and apply the limits ourselves.
9992 * For now, just tell the guest the call succeeded but don't actually
9993 * limit anything.
9994 */
9995 if (resource != RLIMIT_AS &&
9996 resource != RLIMIT_DATA &&
9997 resource != RLIMIT_STACK) {
9998 return get_errno(setrlimit(resource, &rlim));
9999 } else {
10000 return 0;
10001 }
10002 }
10003 #endif
10004 #ifdef TARGET_NR_getrlimit
10005 case TARGET_NR_getrlimit:
10006 {
10007 int resource = target_to_host_resource(arg1);
10008 struct target_rlimit *target_rlim;
10009 struct rlimit rlim;
10010
10011 ret = get_errno(getrlimit(resource, &rlim));
10012 if (!is_error(ret)) {
10013 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10014 return -TARGET_EFAULT;
10015 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10016 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10017 unlock_user_struct(target_rlim, arg2, 1);
10018 }
10019 }
10020 return ret;
10021 #endif
10022 case TARGET_NR_getrusage:
10023 {
10024 struct rusage rusage;
10025 ret = get_errno(getrusage(arg1, &rusage));
10026 if (!is_error(ret)) {
10027 ret = host_to_target_rusage(arg2, &rusage);
10028 }
10029 }
10030 return ret;
10031 #if defined(TARGET_NR_gettimeofday)
10032 case TARGET_NR_gettimeofday:
10033 {
10034 struct timeval tv;
10035 struct timezone tz;
10036
10037 ret = get_errno(gettimeofday(&tv, &tz));
10038 if (!is_error(ret)) {
10039 if (arg1 && copy_to_user_timeval(arg1, &tv)) {
10040 return -TARGET_EFAULT;
10041 }
10042 if (arg2 && copy_to_user_timezone(arg2, &tz)) {
10043 return -TARGET_EFAULT;
10044 }
10045 }
10046 }
10047 return ret;
10048 #endif
10049 #if defined(TARGET_NR_settimeofday)
10050 case TARGET_NR_settimeofday:
10051 {
10052 struct timeval tv, *ptv = NULL;
10053 struct timezone tz, *ptz = NULL;
10054
10055 if (arg1) {
10056 if (copy_from_user_timeval(&tv, arg1)) {
10057 return -TARGET_EFAULT;
10058 }
10059 ptv = &tv;
10060 }
10061
10062 if (arg2) {
10063 if (copy_from_user_timezone(&tz, arg2)) {
10064 return -TARGET_EFAULT;
10065 }
10066 ptz = &tz;
10067 }
10068
10069 return get_errno(settimeofday(ptv, ptz));
10070 }
10071 #endif
10072 #if defined(TARGET_NR_select)
10073 case TARGET_NR_select:
10074 #if defined(TARGET_WANT_NI_OLD_SELECT)
10075 /* some architectures used to have old_select here
10076 * but now ENOSYS it.
10077 */
10078 ret = -TARGET_ENOSYS;
10079 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
10080 ret = do_old_select(arg1);
10081 #else
10082 ret = do_select(arg1, arg2, arg3, arg4, arg5);
10083 #endif
10084 return ret;
10085 #endif
10086 #ifdef TARGET_NR_pselect6
10087 case TARGET_NR_pselect6:
10088 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false);
10089 #endif
10090 #ifdef TARGET_NR_pselect6_time64
10091 case TARGET_NR_pselect6_time64:
10092 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true);
10093 #endif
10094 #ifdef TARGET_NR_symlink
10095 case TARGET_NR_symlink:
10096 {
10097 void *p2;
10098 p = lock_user_string(arg1);
10099 p2 = lock_user_string(arg2);
10100 if (!p || !p2)
10101 ret = -TARGET_EFAULT;
10102 else
10103 ret = get_errno(symlink(p, p2));
10104 unlock_user(p2, arg2, 0);
10105 unlock_user(p, arg1, 0);
10106 }
10107 return ret;
10108 #endif
10109 #if defined(TARGET_NR_symlinkat)
10110 case TARGET_NR_symlinkat:
10111 {
10112 void *p2;
10113 p = lock_user_string(arg1);
10114 p2 = lock_user_string(arg3);
10115 if (!p || !p2)
10116 ret = -TARGET_EFAULT;
10117 else
10118 ret = get_errno(symlinkat(p, arg2, p2));
10119 unlock_user(p2, arg3, 0);
10120 unlock_user(p, arg1, 0);
10121 }
10122 return ret;
10123 #endif
10124 #ifdef TARGET_NR_readlink
10125 case TARGET_NR_readlink:
10126 {
10127 void *p2;
10128 p = lock_user_string(arg1);
10129 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10130 if (!p || !p2) {
10131 ret = -TARGET_EFAULT;
10132 } else if (!arg3) {
10133 /* Short circuit this for the magic exe check. */
10134 ret = -TARGET_EINVAL;
10135 } else if (is_proc_myself((const char *)p, "exe")) {
10136 /*
10137 * Don't worry about sign mismatch as earlier mapping
10138 * logic would have thrown a bad address error.
10139 */
10140 ret = MIN(strlen(exec_path), arg3);
10141 /* We cannot NUL terminate the string. */
10142 memcpy(p2, exec_path, ret);
10143 } else {
10144 ret = get_errno(readlink(path(p), p2, arg3));
10145 }
10146 unlock_user(p2, arg2, ret);
10147 unlock_user(p, arg1, 0);
10148 }
10149 return ret;
10150 #endif
10151 #if defined(TARGET_NR_readlinkat)
10152 case TARGET_NR_readlinkat:
10153 {
10154 void *p2;
10155 p = lock_user_string(arg2);
10156 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
10157 if (!p || !p2) {
10158 ret = -TARGET_EFAULT;
10159 } else if (!arg4) {
10160 /* Short circuit this for the magic exe check. */
10161 ret = -TARGET_EINVAL;
10162 } else if (is_proc_myself((const char *)p, "exe")) {
10163 /*
10164 * Don't worry about sign mismatch as earlier mapping
10165 * logic would have thrown a bad address error.
10166 */
10167 ret = MIN(strlen(exec_path), arg4);
10168 /* We cannot NUL terminate the string. */
10169 memcpy(p2, exec_path, ret);
10170 } else {
10171 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
10172 }
10173 unlock_user(p2, arg3, ret);
10174 unlock_user(p, arg2, 0);
10175 }
10176 return ret;
10177 #endif
10178 #ifdef TARGET_NR_swapon
10179 case TARGET_NR_swapon:
10180 if (!(p = lock_user_string(arg1)))
10181 return -TARGET_EFAULT;
10182 ret = get_errno(swapon(p, arg2));
10183 unlock_user(p, arg1, 0);
10184 return ret;
10185 #endif
10186 case TARGET_NR_reboot:
10187 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
10188 /* arg4 must be ignored in all other cases */
10189 p = lock_user_string(arg4);
10190 if (!p) {
10191 return -TARGET_EFAULT;
10192 }
10193 ret = get_errno(reboot(arg1, arg2, arg3, p));
10194 unlock_user(p, arg4, 0);
10195 } else {
10196 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
10197 }
10198 return ret;
10199 #ifdef TARGET_NR_mmap
10200 case TARGET_NR_mmap:
10201 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
10202 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
10203 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
10204 || defined(TARGET_S390X)
10205 {
10206 abi_ulong *v;
10207 abi_ulong v1, v2, v3, v4, v5, v6;
10208 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
10209 return -TARGET_EFAULT;
10210 v1 = tswapal(v[0]);
10211 v2 = tswapal(v[1]);
10212 v3 = tswapal(v[2]);
10213 v4 = tswapal(v[3]);
10214 v5 = tswapal(v[4]);
10215 v6 = tswapal(v[5]);
10216 unlock_user(v, arg1, 0);
10217 ret = get_errno(target_mmap(v1, v2, v3,
10218 target_to_host_bitmask(v4, mmap_flags_tbl),
10219 v5, v6));
10220 }
10221 #else
10222 /* mmap pointers are always untagged */
10223 ret = get_errno(target_mmap(arg1, arg2, arg3,
10224 target_to_host_bitmask(arg4, mmap_flags_tbl),
10225 arg5,
10226 arg6));
10227 #endif
10228 return ret;
10229 #endif
10230 #ifdef TARGET_NR_mmap2
10231 case TARGET_NR_mmap2:
10232 #ifndef MMAP_SHIFT
10233 #define MMAP_SHIFT 12
10234 #endif
10235 ret = target_mmap(arg1, arg2, arg3,
10236 target_to_host_bitmask(arg4, mmap_flags_tbl),
10237 arg5, arg6 << MMAP_SHIFT);
10238 return get_errno(ret);
10239 #endif
10240 case TARGET_NR_munmap:
10241 arg1 = cpu_untagged_addr(cpu, arg1);
10242 return get_errno(target_munmap(arg1, arg2));
10243 case TARGET_NR_mprotect:
10244 arg1 = cpu_untagged_addr(cpu, arg1);
10245 {
10246 TaskState *ts = cpu->opaque;
10247 /* Special hack to detect libc making the stack executable. */
10248 if ((arg3 & PROT_GROWSDOWN)
10249 && arg1 >= ts->info->stack_limit
10250 && arg1 <= ts->info->start_stack) {
10251 arg3 &= ~PROT_GROWSDOWN;
10252 arg2 = arg2 + arg1 - ts->info->stack_limit;
10253 arg1 = ts->info->stack_limit;
10254 }
10255 }
10256 return get_errno(target_mprotect(arg1, arg2, arg3));
10257 #ifdef TARGET_NR_mremap
10258 case TARGET_NR_mremap:
10259 arg1 = cpu_untagged_addr(cpu, arg1);
10260 /* mremap new_addr (arg5) is always untagged */
10261 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
10262 #endif
10263 /* ??? msync/mlock/munlock are broken for softmmu. */
10264 #ifdef TARGET_NR_msync
10265 case TARGET_NR_msync:
10266 return get_errno(msync(g2h(cpu, arg1), arg2,
10267 target_to_host_msync_arg(arg3)));
10268 #endif
10269 #ifdef TARGET_NR_mlock
10270 case TARGET_NR_mlock:
10271 return get_errno(mlock(g2h(cpu, arg1), arg2));
10272 #endif
10273 #ifdef TARGET_NR_munlock
10274 case TARGET_NR_munlock:
10275 return get_errno(munlock(g2h(cpu, arg1), arg2));
10276 #endif
10277 #ifdef TARGET_NR_mlockall
10278 case TARGET_NR_mlockall:
10279 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
10280 #endif
10281 #ifdef TARGET_NR_munlockall
10282 case TARGET_NR_munlockall:
10283 return get_errno(munlockall());
10284 #endif
10285 #ifdef TARGET_NR_truncate
10286 case TARGET_NR_truncate:
10287 if (!(p = lock_user_string(arg1)))
10288 return -TARGET_EFAULT;
10289 ret = get_errno(truncate(p, arg2));
10290 unlock_user(p, arg1, 0);
10291 return ret;
10292 #endif
10293 #ifdef TARGET_NR_ftruncate
10294 case TARGET_NR_ftruncate:
10295 return get_errno(ftruncate(arg1, arg2));
10296 #endif
10297 case TARGET_NR_fchmod:
10298 return get_errno(fchmod(arg1, arg2));
10299 #if defined(TARGET_NR_fchmodat)
10300 case TARGET_NR_fchmodat:
10301 if (!(p = lock_user_string(arg2)))
10302 return -TARGET_EFAULT;
10303 ret = get_errno(fchmodat(arg1, p, arg3, 0));
10304 unlock_user(p, arg2, 0);
10305 return ret;
10306 #endif
10307 case TARGET_NR_getpriority:
10308 /* Note that negative values are valid for getpriority, so we must
10309 differentiate based on errno settings. */
10310 errno = 0;
10311 ret = getpriority(arg1, arg2);
10312 if (ret == -1 && errno != 0) {
10313 return -host_to_target_errno(errno);
10314 }
10315 #ifdef TARGET_ALPHA
10316 /* Return value is the unbiased priority. Signal no error. */
10317 cpu_env->ir[IR_V0] = 0;
10318 #else
10319 /* Return value is a biased priority to avoid negative numbers. */
10320 ret = 20 - ret;
10321 #endif
10322 return ret;
10323 case TARGET_NR_setpriority:
10324 return get_errno(setpriority(arg1, arg2, arg3));
10325 #ifdef TARGET_NR_statfs
10326 case TARGET_NR_statfs:
10327 if (!(p = lock_user_string(arg1))) {
10328 return -TARGET_EFAULT;
10329 }
10330 ret = get_errno(statfs(path(p), &stfs));
10331 unlock_user(p, arg1, 0);
10332 convert_statfs:
10333 if (!is_error(ret)) {
10334 struct target_statfs *target_stfs;
10335
10336 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
10337 return -TARGET_EFAULT;
10338 __put_user(stfs.f_type, &target_stfs->f_type);
10339 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10340 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10341 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10342 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10343 __put_user(stfs.f_files, &target_stfs->f_files);
10344 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10345 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10346 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10347 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10348 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10349 #ifdef _STATFS_F_FLAGS
10350 __put_user(stfs.f_flags, &target_stfs->f_flags);
10351 #else
10352 __put_user(0, &target_stfs->f_flags);
10353 #endif
10354 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10355 unlock_user_struct(target_stfs, arg2, 1);
10356 }
10357 return ret;
10358 #endif
10359 #ifdef TARGET_NR_fstatfs
10360 case TARGET_NR_fstatfs:
10361 ret = get_errno(fstatfs(arg1, &stfs));
10362 goto convert_statfs;
10363 #endif
10364 #ifdef TARGET_NR_statfs64
10365 case TARGET_NR_statfs64:
10366 if (!(p = lock_user_string(arg1))) {
10367 return -TARGET_EFAULT;
10368 }
10369 ret = get_errno(statfs(path(p), &stfs));
10370 unlock_user(p, arg1, 0);
10371 convert_statfs64:
10372 if (!is_error(ret)) {
10373 struct target_statfs64 *target_stfs;
10374
10375 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
10376 return -TARGET_EFAULT;
10377 __put_user(stfs.f_type, &target_stfs->f_type);
10378 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10379 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10380 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10381 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10382 __put_user(stfs.f_files, &target_stfs->f_files);
10383 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10384 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10385 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10386 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10387 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10388 #ifdef _STATFS_F_FLAGS
10389 __put_user(stfs.f_flags, &target_stfs->f_flags);
10390 #else
10391 __put_user(0, &target_stfs->f_flags);
10392 #endif
10393 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10394 unlock_user_struct(target_stfs, arg3, 1);
10395 }
10396 return ret;
10397 case TARGET_NR_fstatfs64:
10398 ret = get_errno(fstatfs(arg1, &stfs));
10399 goto convert_statfs64;
10400 #endif
10401 #ifdef TARGET_NR_socketcall
10402 case TARGET_NR_socketcall:
10403 return do_socketcall(arg1, arg2);
10404 #endif
10405 #ifdef TARGET_NR_accept
10406 case TARGET_NR_accept:
10407 return do_accept4(arg1, arg2, arg3, 0);
10408 #endif
10409 #ifdef TARGET_NR_accept4
10410 case TARGET_NR_accept4:
10411 return do_accept4(arg1, arg2, arg3, arg4);
10412 #endif
10413 #ifdef TARGET_NR_bind
10414 case TARGET_NR_bind:
10415 return do_bind(arg1, arg2, arg3);
10416 #endif
10417 #ifdef TARGET_NR_connect
10418 case TARGET_NR_connect:
10419 return do_connect(arg1, arg2, arg3);
10420 #endif
10421 #ifdef TARGET_NR_getpeername
10422 case TARGET_NR_getpeername:
10423 return do_getpeername(arg1, arg2, arg3);
10424 #endif
10425 #ifdef TARGET_NR_getsockname
10426 case TARGET_NR_getsockname:
10427 return do_getsockname(arg1, arg2, arg3);
10428 #endif
10429 #ifdef TARGET_NR_getsockopt
10430 case TARGET_NR_getsockopt:
10431 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
10432 #endif
10433 #ifdef TARGET_NR_listen
10434 case TARGET_NR_listen:
10435 return get_errno(listen(arg1, arg2));
10436 #endif
10437 #ifdef TARGET_NR_recv
10438 case TARGET_NR_recv:
10439 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
10440 #endif
10441 #ifdef TARGET_NR_recvfrom
10442 case TARGET_NR_recvfrom:
10443 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
10444 #endif
10445 #ifdef TARGET_NR_recvmsg
10446 case TARGET_NR_recvmsg:
10447 return do_sendrecvmsg(arg1, arg2, arg3, 0);
10448 #endif
10449 #ifdef TARGET_NR_send
10450 case TARGET_NR_send:
10451 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
10452 #endif
10453 #ifdef TARGET_NR_sendmsg
10454 case TARGET_NR_sendmsg:
10455 return do_sendrecvmsg(arg1, arg2, arg3, 1);
10456 #endif
10457 #ifdef TARGET_NR_sendmmsg
10458 case TARGET_NR_sendmmsg:
10459 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
10460 #endif
10461 #ifdef TARGET_NR_recvmmsg
10462 case TARGET_NR_recvmmsg:
10463 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
10464 #endif
10465 #ifdef TARGET_NR_sendto
10466 case TARGET_NR_sendto:
10467 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
10468 #endif
10469 #ifdef TARGET_NR_shutdown
10470 case TARGET_NR_shutdown:
10471 return get_errno(shutdown(arg1, arg2));
10472 #endif
10473 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
10474 case TARGET_NR_getrandom:
10475 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
10476 if (!p) {
10477 return -TARGET_EFAULT;
10478 }
10479 ret = get_errno(getrandom(p, arg2, arg3));
10480 unlock_user(p, arg1, ret);
10481 return ret;
10482 #endif
10483 #ifdef TARGET_NR_socket
10484 case TARGET_NR_socket:
10485 return do_socket(arg1, arg2, arg3);
10486 #endif
10487 #ifdef TARGET_NR_socketpair
10488 case TARGET_NR_socketpair:
10489 return do_socketpair(arg1, arg2, arg3, arg4);
10490 #endif
10491 #ifdef TARGET_NR_setsockopt
10492 case TARGET_NR_setsockopt:
10493 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
10494 #endif
10495 #if defined(TARGET_NR_syslog)
10496 case TARGET_NR_syslog:
10497 {
10498 int len = arg2;
10499
10500 switch (arg1) {
10501 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
10502 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
10503 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
10504 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
10505 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
10506 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
10507 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
10508 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
10509 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
10510 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
10511 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
10512 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
10513 {
10514 if (len < 0) {
10515 return -TARGET_EINVAL;
10516 }
10517 if (len == 0) {
10518 return 0;
10519 }
10520 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10521 if (!p) {
10522 return -TARGET_EFAULT;
10523 }
10524 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
10525 unlock_user(p, arg2, arg3);
10526 }
10527 return ret;
10528 default:
10529 return -TARGET_EINVAL;
10530 }
10531 }
10532 break;
10533 #endif
10534 case TARGET_NR_setitimer:
10535 {
10536 struct itimerval value, ovalue, *pvalue;
10537
10538 if (arg2) {
10539 pvalue = &value;
10540 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
10541 || copy_from_user_timeval(&pvalue->it_value,
10542 arg2 + sizeof(struct target_timeval)))
10543 return -TARGET_EFAULT;
10544 } else {
10545 pvalue = NULL;
10546 }
10547 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
10548 if (!is_error(ret) && arg3) {
10549 if (copy_to_user_timeval(arg3,
10550 &ovalue.it_interval)
10551 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
10552 &ovalue.it_value))
10553 return -TARGET_EFAULT;
10554 }
10555 }
10556 return ret;
10557 case TARGET_NR_getitimer:
10558 {
10559 struct itimerval value;
10560
10561 ret = get_errno(getitimer(arg1, &value));
10562 if (!is_error(ret) && arg2) {
10563 if (copy_to_user_timeval(arg2,
10564 &value.it_interval)
10565 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
10566 &value.it_value))
10567 return -TARGET_EFAULT;
10568 }
10569 }
10570 return ret;
10571 #ifdef TARGET_NR_stat
10572 case TARGET_NR_stat:
10573 if (!(p = lock_user_string(arg1))) {
10574 return -TARGET_EFAULT;
10575 }
10576 ret = get_errno(stat(path(p), &st));
10577 unlock_user(p, arg1, 0);
10578 goto do_stat;
10579 #endif
10580 #ifdef TARGET_NR_lstat
10581 case TARGET_NR_lstat:
10582 if (!(p = lock_user_string(arg1))) {
10583 return -TARGET_EFAULT;
10584 }
10585 ret = get_errno(lstat(path(p), &st));
10586 unlock_user(p, arg1, 0);
10587 goto do_stat;
10588 #endif
10589 #ifdef TARGET_NR_fstat
10590 case TARGET_NR_fstat:
10591 {
10592 ret = get_errno(fstat(arg1, &st));
10593 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
10594 do_stat:
10595 #endif
10596 if (!is_error(ret)) {
10597 struct target_stat *target_st;
10598
10599 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
10600 return -TARGET_EFAULT;
10601 memset(target_st, 0, sizeof(*target_st));
10602 __put_user(st.st_dev, &target_st->st_dev);
10603 __put_user(st.st_ino, &target_st->st_ino);
10604 __put_user(st.st_mode, &target_st->st_mode);
10605 __put_user(st.st_uid, &target_st->st_uid);
10606 __put_user(st.st_gid, &target_st->st_gid);
10607 __put_user(st.st_nlink, &target_st->st_nlink);
10608 __put_user(st.st_rdev, &target_st->st_rdev);
10609 __put_user(st.st_size, &target_st->st_size);
10610 __put_user(st.st_blksize, &target_st->st_blksize);
10611 __put_user(st.st_blocks, &target_st->st_blocks);
10612 __put_user(st.st_atime, &target_st->target_st_atime);
10613 __put_user(st.st_mtime, &target_st->target_st_mtime);
10614 __put_user(st.st_ctime, &target_st->target_st_ctime);
10615 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC)
10616 __put_user(st.st_atim.tv_nsec,
10617 &target_st->target_st_atime_nsec);
10618 __put_user(st.st_mtim.tv_nsec,
10619 &target_st->target_st_mtime_nsec);
10620 __put_user(st.st_ctim.tv_nsec,
10621 &target_st->target_st_ctime_nsec);
10622 #endif
10623 unlock_user_struct(target_st, arg2, 1);
10624 }
10625 }
10626 return ret;
10627 #endif
10628 case TARGET_NR_vhangup:
10629 return get_errno(vhangup());
10630 #ifdef TARGET_NR_syscall
10631 case TARGET_NR_syscall:
10632 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
10633 arg6, arg7, arg8, 0);
10634 #endif
10635 #if defined(TARGET_NR_wait4)
10636 case TARGET_NR_wait4:
10637 {
10638 int status;
10639 abi_long status_ptr = arg2;
10640 struct rusage rusage, *rusage_ptr;
10641 abi_ulong target_rusage = arg4;
10642 abi_long rusage_err;
10643 if (target_rusage)
10644 rusage_ptr = &rusage;
10645 else
10646 rusage_ptr = NULL;
10647 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
10648 if (!is_error(ret)) {
10649 if (status_ptr && ret) {
10650 status = host_to_target_waitstatus(status);
10651 if (put_user_s32(status, status_ptr))
10652 return -TARGET_EFAULT;
10653 }
10654 if (target_rusage) {
10655 rusage_err = host_to_target_rusage(target_rusage, &rusage);
10656 if (rusage_err) {
10657 ret = rusage_err;
10658 }
10659 }
10660 }
10661 }
10662 return ret;
10663 #endif
10664 #ifdef TARGET_NR_swapoff
10665 case TARGET_NR_swapoff:
10666 if (!(p = lock_user_string(arg1)))
10667 return -TARGET_EFAULT;
10668 ret = get_errno(swapoff(p));
10669 unlock_user(p, arg1, 0);
10670 return ret;
10671 #endif
10672 case TARGET_NR_sysinfo:
10673 {
10674 struct target_sysinfo *target_value;
10675 struct sysinfo value;
10676 ret = get_errno(sysinfo(&value));
10677 if (!is_error(ret) && arg1)
10678 {
10679 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
10680 return -TARGET_EFAULT;
10681 __put_user(value.uptime, &target_value->uptime);
10682 __put_user(value.loads[0], &target_value->loads[0]);
10683 __put_user(value.loads[1], &target_value->loads[1]);
10684 __put_user(value.loads[2], &target_value->loads[2]);
10685 __put_user(value.totalram, &target_value->totalram);
10686 __put_user(value.freeram, &target_value->freeram);
10687 __put_user(value.sharedram, &target_value->sharedram);
10688 __put_user(value.bufferram, &target_value->bufferram);
10689 __put_user(value.totalswap, &target_value->totalswap);
10690 __put_user(value.freeswap, &target_value->freeswap);
10691 __put_user(value.procs, &target_value->procs);
10692 __put_user(value.totalhigh, &target_value->totalhigh);
10693 __put_user(value.freehigh, &target_value->freehigh);
10694 __put_user(value.mem_unit, &target_value->mem_unit);
10695 unlock_user_struct(target_value, arg1, 1);
10696 }
10697 }
10698 return ret;
10699 #ifdef TARGET_NR_ipc
10700 case TARGET_NR_ipc:
10701 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
10702 #endif
10703 #ifdef TARGET_NR_semget
10704 case TARGET_NR_semget:
10705 return get_errno(semget(arg1, arg2, arg3));
10706 #endif
10707 #ifdef TARGET_NR_semop
10708 case TARGET_NR_semop:
10709 return do_semtimedop(arg1, arg2, arg3, 0, false);
10710 #endif
10711 #ifdef TARGET_NR_semtimedop
10712 case TARGET_NR_semtimedop:
10713 return do_semtimedop(arg1, arg2, arg3, arg4, false);
10714 #endif
10715 #ifdef TARGET_NR_semtimedop_time64
10716 case TARGET_NR_semtimedop_time64:
10717 return do_semtimedop(arg1, arg2, arg3, arg4, true);
10718 #endif
10719 #ifdef TARGET_NR_semctl
10720 case TARGET_NR_semctl:
10721 return do_semctl(arg1, arg2, arg3, arg4);
10722 #endif
10723 #ifdef TARGET_NR_msgctl
10724 case TARGET_NR_msgctl:
10725 return do_msgctl(arg1, arg2, arg3);
10726 #endif
10727 #ifdef TARGET_NR_msgget
10728 case TARGET_NR_msgget:
10729 return get_errno(msgget(arg1, arg2));
10730 #endif
10731 #ifdef TARGET_NR_msgrcv
10732 case TARGET_NR_msgrcv:
10733 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
10734 #endif
10735 #ifdef TARGET_NR_msgsnd
10736 case TARGET_NR_msgsnd:
10737 return do_msgsnd(arg1, arg2, arg3, arg4);
10738 #endif
10739 #ifdef TARGET_NR_shmget
10740 case TARGET_NR_shmget:
10741 return get_errno(shmget(arg1, arg2, arg3));
10742 #endif
10743 #ifdef TARGET_NR_shmctl
10744 case TARGET_NR_shmctl:
10745 return do_shmctl(arg1, arg2, arg3);
10746 #endif
10747 #ifdef TARGET_NR_shmat
10748 case TARGET_NR_shmat:
10749 return do_shmat(cpu_env, arg1, arg2, arg3);
10750 #endif
10751 #ifdef TARGET_NR_shmdt
10752 case TARGET_NR_shmdt:
10753 return do_shmdt(arg1);
10754 #endif
10755 case TARGET_NR_fsync:
10756 return get_errno(fsync(arg1));
10757 case TARGET_NR_clone:
10758 /* Linux manages to have three different orderings for its
10759 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
10760 * match the kernel's CONFIG_CLONE_* settings.
10761 * Microblaze is further special in that it uses a sixth
10762 * implicit argument to clone for the TLS pointer.
10763 */
10764 #if defined(TARGET_MICROBLAZE)
10765 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
10766 #elif defined(TARGET_CLONE_BACKWARDS)
10767 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
10768 #elif defined(TARGET_CLONE_BACKWARDS2)
10769 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
10770 #else
10771 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
10772 #endif
10773 return ret;
10774 #ifdef __NR_exit_group
10775 /* new thread calls */
10776 case TARGET_NR_exit_group:
10777 preexit_cleanup(cpu_env, arg1);
10778 return get_errno(exit_group(arg1));
10779 #endif
10780 case TARGET_NR_setdomainname:
10781 if (!(p = lock_user_string(arg1)))
10782 return -TARGET_EFAULT;
10783 ret = get_errno(setdomainname(p, arg2));
10784 unlock_user(p, arg1, 0);
10785 return ret;
10786 case TARGET_NR_uname:
10787 /* no need to transcode because we use the linux syscall */
10788 {
10789 struct new_utsname * buf;
10790
10791 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
10792 return -TARGET_EFAULT;
10793 ret = get_errno(sys_uname(buf));
10794 if (!is_error(ret)) {
10795 /* Overwrite the native machine name with whatever is being
10796 emulated. */
10797 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
10798 sizeof(buf->machine));
10799 /* Allow the user to override the reported release. */
10800 if (qemu_uname_release && *qemu_uname_release) {
10801 g_strlcpy(buf->release, qemu_uname_release,
10802 sizeof(buf->release));
10803 }
10804 }
10805 unlock_user_struct(buf, arg1, 1);
10806 }
10807 return ret;
10808 #ifdef TARGET_I386
10809 case TARGET_NR_modify_ldt:
10810 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
10811 #if !defined(TARGET_X86_64)
10812 case TARGET_NR_vm86:
10813 return do_vm86(cpu_env, arg1, arg2);
10814 #endif
10815 #endif
10816 #if defined(TARGET_NR_adjtimex)
10817 case TARGET_NR_adjtimex:
10818 {
10819 struct timex host_buf;
10820
10821 if (target_to_host_timex(&host_buf, arg1) != 0) {
10822 return -TARGET_EFAULT;
10823 }
10824 ret = get_errno(adjtimex(&host_buf));
10825 if (!is_error(ret)) {
10826 if (host_to_target_timex(arg1, &host_buf) != 0) {
10827 return -TARGET_EFAULT;
10828 }
10829 }
10830 }
10831 return ret;
10832 #endif
10833 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
10834 case TARGET_NR_clock_adjtime:
10835 {
10836 struct timex htx, *phtx = &htx;
10837
10838 if (target_to_host_timex(phtx, arg2) != 0) {
10839 return -TARGET_EFAULT;
10840 }
10841 ret = get_errno(clock_adjtime(arg1, phtx));
10842 if (!is_error(ret) && phtx) {
10843 if (host_to_target_timex(arg2, phtx) != 0) {
10844 return -TARGET_EFAULT;
10845 }
10846 }
10847 }
10848 return ret;
10849 #endif
10850 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
10851 case TARGET_NR_clock_adjtime64:
10852 {
10853 struct timex htx;
10854
10855 if (target_to_host_timex64(&htx, arg2) != 0) {
10856 return -TARGET_EFAULT;
10857 }
10858 ret = get_errno(clock_adjtime(arg1, &htx));
10859 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) {
10860 return -TARGET_EFAULT;
10861 }
10862 }
10863 return ret;
10864 #endif
10865 case TARGET_NR_getpgid:
10866 return get_errno(getpgid(arg1));
10867 case TARGET_NR_fchdir:
10868 return get_errno(fchdir(arg1));
10869 case TARGET_NR_personality:
10870 return get_errno(personality(arg1));
10871 #ifdef TARGET_NR__llseek /* Not on alpha */
10872 case TARGET_NR__llseek:
10873 {
10874 int64_t res;
10875 #if !defined(__NR_llseek)
10876 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
10877 if (res == -1) {
10878 ret = get_errno(res);
10879 } else {
10880 ret = 0;
10881 }
10882 #else
10883 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
10884 #endif
10885 if ((ret == 0) && put_user_s64(res, arg4)) {
10886 return -TARGET_EFAULT;
10887 }
10888 }
10889 return ret;
10890 #endif
10891 #ifdef TARGET_NR_getdents
10892 case TARGET_NR_getdents:
10893 return do_getdents(arg1, arg2, arg3);
10894 #endif /* TARGET_NR_getdents */
10895 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
10896 case TARGET_NR_getdents64:
10897 return do_getdents64(arg1, arg2, arg3);
10898 #endif /* TARGET_NR_getdents64 */
10899 #if defined(TARGET_NR__newselect)
10900 case TARGET_NR__newselect:
10901 return do_select(arg1, arg2, arg3, arg4, arg5);
10902 #endif
10903 #ifdef TARGET_NR_poll
10904 case TARGET_NR_poll:
10905 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false);
10906 #endif
10907 #ifdef TARGET_NR_ppoll
10908 case TARGET_NR_ppoll:
10909 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false);
10910 #endif
10911 #ifdef TARGET_NR_ppoll_time64
10912 case TARGET_NR_ppoll_time64:
10913 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true);
10914 #endif
10915 case TARGET_NR_flock:
10916 /* NOTE: the flock constant seems to be the same for every
10917 Linux platform */
10918 return get_errno(safe_flock(arg1, arg2));
10919 case TARGET_NR_readv:
10920 {
10921 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10922 if (vec != NULL) {
10923 ret = get_errno(safe_readv(arg1, vec, arg3));
10924 unlock_iovec(vec, arg2, arg3, 1);
10925 } else {
10926 ret = -host_to_target_errno(errno);
10927 }
10928 }
10929 return ret;
10930 case TARGET_NR_writev:
10931 {
10932 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10933 if (vec != NULL) {
10934 ret = get_errno(safe_writev(arg1, vec, arg3));
10935 unlock_iovec(vec, arg2, arg3, 0);
10936 } else {
10937 ret = -host_to_target_errno(errno);
10938 }
10939 }
10940 return ret;
10941 #if defined(TARGET_NR_preadv)
10942 case TARGET_NR_preadv:
10943 {
10944 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10945 if (vec != NULL) {
10946 unsigned long low, high;
10947
10948 target_to_host_low_high(arg4, arg5, &low, &high);
10949 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
10950 unlock_iovec(vec, arg2, arg3, 1);
10951 } else {
10952 ret = -host_to_target_errno(errno);
10953 }
10954 }
10955 return ret;
10956 #endif
10957 #if defined(TARGET_NR_pwritev)
10958 case TARGET_NR_pwritev:
10959 {
10960 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10961 if (vec != NULL) {
10962 unsigned long low, high;
10963
10964 target_to_host_low_high(arg4, arg5, &low, &high);
10965 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
10966 unlock_iovec(vec, arg2, arg3, 0);
10967 } else {
10968 ret = -host_to_target_errno(errno);
10969 }
10970 }
10971 return ret;
10972 #endif
10973 case TARGET_NR_getsid:
10974 return get_errno(getsid(arg1));
10975 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10976 case TARGET_NR_fdatasync:
10977 return get_errno(fdatasync(arg1));
10978 #endif
10979 case TARGET_NR_sched_getaffinity:
10980 {
10981 unsigned int mask_size;
10982 unsigned long *mask;
10983
10984 /*
10985 * sched_getaffinity needs multiples of ulong, so need to take
10986 * care of mismatches between target ulong and host ulong sizes.
10987 */
10988 if (arg2 & (sizeof(abi_ulong) - 1)) {
10989 return -TARGET_EINVAL;
10990 }
10991 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10992
10993 mask = alloca(mask_size);
10994 memset(mask, 0, mask_size);
10995 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10996
10997 if (!is_error(ret)) {
10998 if (ret > arg2) {
10999 /* More data returned than the caller's buffer will fit.
11000 * This only happens if sizeof(abi_long) < sizeof(long)
11001 * and the caller passed us a buffer holding an odd number
11002 * of abi_longs. If the host kernel is actually using the
11003 * extra 4 bytes then fail EINVAL; otherwise we can just
11004 * ignore them and only copy the interesting part.
11005 */
11006 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
11007 if (numcpus > arg2 * 8) {
11008 return -TARGET_EINVAL;
11009 }
11010 ret = arg2;
11011 }
11012
11013 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
11014 return -TARGET_EFAULT;
11015 }
11016 }
11017 }
11018 return ret;
11019 case TARGET_NR_sched_setaffinity:
11020 {
11021 unsigned int mask_size;
11022 unsigned long *mask;
11023
11024 /*
11025 * sched_setaffinity needs multiples of ulong, so need to take
11026 * care of mismatches between target ulong and host ulong sizes.
11027 */
11028 if (arg2 & (sizeof(abi_ulong) - 1)) {
11029 return -TARGET_EINVAL;
11030 }
11031 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
11032 mask = alloca(mask_size);
11033
11034 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
11035 if (ret) {
11036 return ret;
11037 }
11038
11039 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
11040 }
11041 case TARGET_NR_getcpu:
11042 {
11043 unsigned cpu, node;
11044 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
11045 arg2 ? &node : NULL,
11046 NULL));
11047 if (is_error(ret)) {
11048 return ret;
11049 }
11050 if (arg1 && put_user_u32(cpu, arg1)) {
11051 return -TARGET_EFAULT;
11052 }
11053 if (arg2 && put_user_u32(node, arg2)) {
11054 return -TARGET_EFAULT;
11055 }
11056 }
11057 return ret;
11058 case TARGET_NR_sched_setparam:
11059 {
11060 struct target_sched_param *target_schp;
11061 struct sched_param schp;
11062
11063 if (arg2 == 0) {
11064 return -TARGET_EINVAL;
11065 }
11066 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) {
11067 return -TARGET_EFAULT;
11068 }
11069 schp.sched_priority = tswap32(target_schp->sched_priority);
11070 unlock_user_struct(target_schp, arg2, 0);
11071 return get_errno(sys_sched_setparam(arg1, &schp));
11072 }
11073 case TARGET_NR_sched_getparam:
11074 {
11075 struct target_sched_param *target_schp;
11076 struct sched_param schp;
11077
11078 if (arg2 == 0) {
11079 return -TARGET_EINVAL;
11080 }
11081 ret = get_errno(sys_sched_getparam(arg1, &schp));
11082 if (!is_error(ret)) {
11083 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) {
11084 return -TARGET_EFAULT;
11085 }
11086 target_schp->sched_priority = tswap32(schp.sched_priority);
11087 unlock_user_struct(target_schp, arg2, 1);
11088 }
11089 }
11090 return ret;
11091 case TARGET_NR_sched_setscheduler:
11092 {
11093 struct target_sched_param *target_schp;
11094 struct sched_param schp;
11095 if (arg3 == 0) {
11096 return -TARGET_EINVAL;
11097 }
11098 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) {
11099 return -TARGET_EFAULT;
11100 }
11101 schp.sched_priority = tswap32(target_schp->sched_priority);
11102 unlock_user_struct(target_schp, arg3, 0);
11103 return get_errno(sys_sched_setscheduler(arg1, arg2, &schp));
11104 }
11105 case TARGET_NR_sched_getscheduler:
11106 return get_errno(sys_sched_getscheduler(arg1));
11107 case TARGET_NR_sched_getattr:
11108 {
11109 struct target_sched_attr *target_scha;
11110 struct sched_attr scha;
11111 if (arg2 == 0) {
11112 return -TARGET_EINVAL;
11113 }
11114 if (arg3 > sizeof(scha)) {
11115 arg3 = sizeof(scha);
11116 }
11117 ret = get_errno(sys_sched_getattr(arg1, &scha, arg3, arg4));
11118 if (!is_error(ret)) {
11119 target_scha = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11120 if (!target_scha) {
11121 return -TARGET_EFAULT;
11122 }
11123 target_scha->size = tswap32(scha.size);
11124 target_scha->sched_policy = tswap32(scha.sched_policy);
11125 target_scha->sched_flags = tswap64(scha.sched_flags);
11126 target_scha->sched_nice = tswap32(scha.sched_nice);
11127 target_scha->sched_priority = tswap32(scha.sched_priority);
11128 target_scha->sched_runtime = tswap64(scha.sched_runtime);
11129 target_scha->sched_deadline = tswap64(scha.sched_deadline);
11130 target_scha->sched_period = tswap64(scha.sched_period);
11131 if (scha.size > offsetof(struct sched_attr, sched_util_min)) {
11132 target_scha->sched_util_min = tswap32(scha.sched_util_min);
11133 target_scha->sched_util_max = tswap32(scha.sched_util_max);
11134 }
11135 unlock_user(target_scha, arg2, arg3);
11136 }
11137 return ret;
11138 }
11139 case TARGET_NR_sched_setattr:
11140 {
11141 struct target_sched_attr *target_scha;
11142 struct sched_attr scha;
11143 uint32_t size;
11144 int zeroed;
11145 if (arg2 == 0) {
11146 return -TARGET_EINVAL;
11147 }
11148 if (get_user_u32(size, arg2)) {
11149 return -TARGET_EFAULT;
11150 }
11151 if (!size) {
11152 size = offsetof(struct target_sched_attr, sched_util_min);
11153 }
11154 if (size < offsetof(struct target_sched_attr, sched_util_min)) {
11155 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) {
11156 return -TARGET_EFAULT;
11157 }
11158 return -TARGET_E2BIG;
11159 }
11160
11161 zeroed = check_zeroed_user(arg2, sizeof(struct target_sched_attr), size);
11162 if (zeroed < 0) {
11163 return zeroed;
11164 } else if (zeroed == 0) {
11165 if (put_user_u32(sizeof(struct target_sched_attr), arg2)) {
11166 return -TARGET_EFAULT;
11167 }
11168 return -TARGET_E2BIG;
11169 }
11170 if (size > sizeof(struct target_sched_attr)) {
11171 size = sizeof(struct target_sched_attr);
11172 }
11173
11174 target_scha = lock_user(VERIFY_READ, arg2, size, 1);
11175 if (!target_scha) {
11176 return -TARGET_EFAULT;
11177 }
11178 scha.size = size;
11179 scha.sched_policy = tswap32(target_scha->sched_policy);
11180 scha.sched_flags = tswap64(target_scha->sched_flags);
11181 scha.sched_nice = tswap32(target_scha->sched_nice);
11182 scha.sched_priority = tswap32(target_scha->sched_priority);
11183 scha.sched_runtime = tswap64(target_scha->sched_runtime);
11184 scha.sched_deadline = tswap64(target_scha->sched_deadline);
11185 scha.sched_period = tswap64(target_scha->sched_period);
11186 if (size > offsetof(struct target_sched_attr, sched_util_min)) {
11187 scha.sched_util_min = tswap32(target_scha->sched_util_min);
11188 scha.sched_util_max = tswap32(target_scha->sched_util_max);
11189 }
11190 unlock_user(target_scha, arg2, 0);
11191 return get_errno(sys_sched_setattr(arg1, &scha, arg3));
11192 }
11193 case TARGET_NR_sched_yield:
11194 return get_errno(sched_yield());
11195 case TARGET_NR_sched_get_priority_max:
11196 return get_errno(sched_get_priority_max(arg1));
11197 case TARGET_NR_sched_get_priority_min:
11198 return get_errno(sched_get_priority_min(arg1));
11199 #ifdef TARGET_NR_sched_rr_get_interval
11200 case TARGET_NR_sched_rr_get_interval:
11201 {
11202 struct timespec ts;
11203 ret = get_errno(sched_rr_get_interval(arg1, &ts));
11204 if (!is_error(ret)) {
11205 ret = host_to_target_timespec(arg2, &ts);
11206 }
11207 }
11208 return ret;
11209 #endif
11210 #ifdef TARGET_NR_sched_rr_get_interval_time64
11211 case TARGET_NR_sched_rr_get_interval_time64:
11212 {
11213 struct timespec ts;
11214 ret = get_errno(sched_rr_get_interval(arg1, &ts));
11215 if (!is_error(ret)) {
11216 ret = host_to_target_timespec64(arg2, &ts);
11217 }
11218 }
11219 return ret;
11220 #endif
11221 #if defined(TARGET_NR_nanosleep)
11222 case TARGET_NR_nanosleep:
11223 {
11224 struct timespec req, rem;
11225 target_to_host_timespec(&req, arg1);
11226 ret = get_errno(safe_nanosleep(&req, &rem));
11227 if (is_error(ret) && arg2) {
11228 host_to_target_timespec(arg2, &rem);
11229 }
11230 }
11231 return ret;
11232 #endif
11233 case TARGET_NR_prctl:
11234 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5);
11235 break;
11236 #ifdef TARGET_NR_arch_prctl
11237 case TARGET_NR_arch_prctl:
11238 return do_arch_prctl(cpu_env, arg1, arg2);
11239 #endif
11240 #ifdef TARGET_NR_pread64
11241 case TARGET_NR_pread64:
11242 if (regpairs_aligned(cpu_env, num)) {
11243 arg4 = arg5;
11244 arg5 = arg6;
11245 }
11246 if (arg2 == 0 && arg3 == 0) {
11247 /* Special-case NULL buffer and zero length, which should succeed */
11248 p = 0;
11249 } else {
11250 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11251 if (!p) {
11252 return -TARGET_EFAULT;
11253 }
11254 }
11255 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
11256 unlock_user(p, arg2, ret);
11257 return ret;
11258 case TARGET_NR_pwrite64:
11259 if (regpairs_aligned(cpu_env, num)) {
11260 arg4 = arg5;
11261 arg5 = arg6;
11262 }
11263 if (arg2 == 0 && arg3 == 0) {
11264 /* Special-case NULL buffer and zero length, which should succeed */
11265 p = 0;
11266 } else {
11267 p = lock_user(VERIFY_READ, arg2, arg3, 1);
11268 if (!p) {
11269 return -TARGET_EFAULT;
11270 }
11271 }
11272 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
11273 unlock_user(p, arg2, 0);
11274 return ret;
11275 #endif
11276 case TARGET_NR_getcwd:
11277 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
11278 return -TARGET_EFAULT;
11279 ret = get_errno(sys_getcwd1(p, arg2));
11280 unlock_user(p, arg1, ret);
11281 return ret;
11282 case TARGET_NR_capget:
11283 case TARGET_NR_capset:
11284 {
11285 struct target_user_cap_header *target_header;
11286 struct target_user_cap_data *target_data = NULL;
11287 struct __user_cap_header_struct header;
11288 struct __user_cap_data_struct data[2];
11289 struct __user_cap_data_struct *dataptr = NULL;
11290 int i, target_datalen;
11291 int data_items = 1;
11292
11293 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
11294 return -TARGET_EFAULT;
11295 }
11296 header.version = tswap32(target_header->version);
11297 header.pid = tswap32(target_header->pid);
11298
11299 if (header.version != _LINUX_CAPABILITY_VERSION) {
11300 /* Version 2 and up takes pointer to two user_data structs */
11301 data_items = 2;
11302 }
11303
11304 target_datalen = sizeof(*target_data) * data_items;
11305
11306 if (arg2) {
11307 if (num == TARGET_NR_capget) {
11308 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
11309 } else {
11310 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
11311 }
11312 if (!target_data) {
11313 unlock_user_struct(target_header, arg1, 0);
11314 return -TARGET_EFAULT;
11315 }
11316
11317 if (num == TARGET_NR_capset) {
11318 for (i = 0; i < data_items; i++) {
11319 data[i].effective = tswap32(target_data[i].effective);
11320 data[i].permitted = tswap32(target_data[i].permitted);
11321 data[i].inheritable = tswap32(target_data[i].inheritable);
11322 }
11323 }
11324
11325 dataptr = data;
11326 }
11327
11328 if (num == TARGET_NR_capget) {
11329 ret = get_errno(capget(&header, dataptr));
11330 } else {
11331 ret = get_errno(capset(&header, dataptr));
11332 }
11333
11334 /* The kernel always updates version for both capget and capset */
11335 target_header->version = tswap32(header.version);
11336 unlock_user_struct(target_header, arg1, 1);
11337
11338 if (arg2) {
11339 if (num == TARGET_NR_capget) {
11340 for (i = 0; i < data_items; i++) {
11341 target_data[i].effective = tswap32(data[i].effective);
11342 target_data[i].permitted = tswap32(data[i].permitted);
11343 target_data[i].inheritable = tswap32(data[i].inheritable);
11344 }
11345 unlock_user(target_data, arg2, target_datalen);
11346 } else {
11347 unlock_user(target_data, arg2, 0);
11348 }
11349 }
11350 return ret;
11351 }
11352 case TARGET_NR_sigaltstack:
11353 return do_sigaltstack(arg1, arg2, cpu_env);
11354
11355 #ifdef CONFIG_SENDFILE
11356 #ifdef TARGET_NR_sendfile
11357 case TARGET_NR_sendfile:
11358 {
11359 off_t *offp = NULL;
11360 off_t off;
11361 if (arg3) {
11362 ret = get_user_sal(off, arg3);
11363 if (is_error(ret)) {
11364 return ret;
11365 }
11366 offp = &off;
11367 }
11368 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11369 if (!is_error(ret) && arg3) {
11370 abi_long ret2 = put_user_sal(off, arg3);
11371 if (is_error(ret2)) {
11372 ret = ret2;
11373 }
11374 }
11375 return ret;
11376 }
11377 #endif
11378 #ifdef TARGET_NR_sendfile64
11379 case TARGET_NR_sendfile64:
11380 {
11381 off_t *offp = NULL;
11382 off_t off;
11383 if (arg3) {
11384 ret = get_user_s64(off, arg3);
11385 if (is_error(ret)) {
11386 return ret;
11387 }
11388 offp = &off;
11389 }
11390 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11391 if (!is_error(ret) && arg3) {
11392 abi_long ret2 = put_user_s64(off, arg3);
11393 if (is_error(ret2)) {
11394 ret = ret2;
11395 }
11396 }
11397 return ret;
11398 }
11399 #endif
11400 #endif
11401 #ifdef TARGET_NR_vfork
11402 case TARGET_NR_vfork:
11403 return get_errno(do_fork(cpu_env,
11404 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
11405 0, 0, 0, 0));
11406 #endif
11407 #ifdef TARGET_NR_ugetrlimit
11408 case TARGET_NR_ugetrlimit:
11409 {
11410 struct rlimit rlim;
11411 int resource = target_to_host_resource(arg1);
11412 ret = get_errno(getrlimit(resource, &rlim));
11413 if (!is_error(ret)) {
11414 struct target_rlimit *target_rlim;
11415 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
11416 return -TARGET_EFAULT;
11417 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
11418 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
11419 unlock_user_struct(target_rlim, arg2, 1);
11420 }
11421 return ret;
11422 }
11423 #endif
11424 #ifdef TARGET_NR_truncate64
11425 case TARGET_NR_truncate64:
11426 if (!(p = lock_user_string(arg1)))
11427 return -TARGET_EFAULT;
11428 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
11429 unlock_user(p, arg1, 0);
11430 return ret;
11431 #endif
11432 #ifdef TARGET_NR_ftruncate64
11433 case TARGET_NR_ftruncate64:
11434 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
11435 #endif
11436 #ifdef TARGET_NR_stat64
11437 case TARGET_NR_stat64:
11438 if (!(p = lock_user_string(arg1))) {
11439 return -TARGET_EFAULT;
11440 }
11441 ret = get_errno(stat(path(p), &st));
11442 unlock_user(p, arg1, 0);
11443 if (!is_error(ret))
11444 ret = host_to_target_stat64(cpu_env, arg2, &st);
11445 return ret;
11446 #endif
11447 #ifdef TARGET_NR_lstat64
11448 case TARGET_NR_lstat64:
11449 if (!(p = lock_user_string(arg1))) {
11450 return -TARGET_EFAULT;
11451 }
11452 ret = get_errno(lstat(path(p), &st));
11453 unlock_user(p, arg1, 0);
11454 if (!is_error(ret))
11455 ret = host_to_target_stat64(cpu_env, arg2, &st);
11456 return ret;
11457 #endif
11458 #ifdef TARGET_NR_fstat64
11459 case TARGET_NR_fstat64:
11460 ret = get_errno(fstat(arg1, &st));
11461 if (!is_error(ret))
11462 ret = host_to_target_stat64(cpu_env, arg2, &st);
11463 return ret;
11464 #endif
11465 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
11466 #ifdef TARGET_NR_fstatat64
11467 case TARGET_NR_fstatat64:
11468 #endif
11469 #ifdef TARGET_NR_newfstatat
11470 case TARGET_NR_newfstatat:
11471 #endif
11472 if (!(p = lock_user_string(arg2))) {
11473 return -TARGET_EFAULT;
11474 }
11475 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
11476 unlock_user(p, arg2, 0);
11477 if (!is_error(ret))
11478 ret = host_to_target_stat64(cpu_env, arg3, &st);
11479 return ret;
11480 #endif
11481 #if defined(TARGET_NR_statx)
11482 case TARGET_NR_statx:
11483 {
11484 struct target_statx *target_stx;
11485 int dirfd = arg1;
11486 int flags = arg3;
11487
11488 p = lock_user_string(arg2);
11489 if (p == NULL) {
11490 return -TARGET_EFAULT;
11491 }
11492 #if defined(__NR_statx)
11493 {
11494 /*
11495 * It is assumed that struct statx is architecture independent.
11496 */
11497 struct target_statx host_stx;
11498 int mask = arg4;
11499
11500 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
11501 if (!is_error(ret)) {
11502 if (host_to_target_statx(&host_stx, arg5) != 0) {
11503 unlock_user(p, arg2, 0);
11504 return -TARGET_EFAULT;
11505 }
11506 }
11507
11508 if (ret != -TARGET_ENOSYS) {
11509 unlock_user(p, arg2, 0);
11510 return ret;
11511 }
11512 }
11513 #endif
11514 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
11515 unlock_user(p, arg2, 0);
11516
11517 if (!is_error(ret)) {
11518 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
11519 return -TARGET_EFAULT;
11520 }
11521 memset(target_stx, 0, sizeof(*target_stx));
11522 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
11523 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
11524 __put_user(st.st_ino, &target_stx->stx_ino);
11525 __put_user(st.st_mode, &target_stx->stx_mode);
11526 __put_user(st.st_uid, &target_stx->stx_uid);
11527 __put_user(st.st_gid, &target_stx->stx_gid);
11528 __put_user(st.st_nlink, &target_stx->stx_nlink);
11529 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
11530 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
11531 __put_user(st.st_size, &target_stx->stx_size);
11532 __put_user(st.st_blksize, &target_stx->stx_blksize);
11533 __put_user(st.st_blocks, &target_stx->stx_blocks);
11534 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
11535 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
11536 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
11537 unlock_user_struct(target_stx, arg5, 1);
11538 }
11539 }
11540 return ret;
11541 #endif
11542 #ifdef TARGET_NR_lchown
11543 case TARGET_NR_lchown:
11544 if (!(p = lock_user_string(arg1)))
11545 return -TARGET_EFAULT;
11546 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
11547 unlock_user(p, arg1, 0);
11548 return ret;
11549 #endif
11550 #ifdef TARGET_NR_getuid
11551 case TARGET_NR_getuid:
11552 return get_errno(high2lowuid(getuid()));
11553 #endif
11554 #ifdef TARGET_NR_getgid
11555 case TARGET_NR_getgid:
11556 return get_errno(high2lowgid(getgid()));
11557 #endif
11558 #ifdef TARGET_NR_geteuid
11559 case TARGET_NR_geteuid:
11560 return get_errno(high2lowuid(geteuid()));
11561 #endif
11562 #ifdef TARGET_NR_getegid
11563 case TARGET_NR_getegid:
11564 return get_errno(high2lowgid(getegid()));
11565 #endif
11566 case TARGET_NR_setreuid:
11567 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
11568 case TARGET_NR_setregid:
11569 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
11570 case TARGET_NR_getgroups:
11571 {
11572 int gidsetsize = arg1;
11573 target_id *target_grouplist;
11574 g_autofree gid_t *grouplist = NULL;
11575 int i;
11576
11577 if (gidsetsize > NGROUPS_MAX) {
11578 return -TARGET_EINVAL;
11579 }
11580 if (gidsetsize > 0) {
11581 grouplist = g_try_new(gid_t, gidsetsize);
11582 if (!grouplist) {
11583 return -TARGET_ENOMEM;
11584 }
11585 }
11586 ret = get_errno(getgroups(gidsetsize, grouplist));
11587 if (!is_error(ret) && gidsetsize > 0) {
11588 target_grouplist = lock_user(VERIFY_WRITE, arg2,
11589 gidsetsize * sizeof(target_id), 0);
11590 if (!target_grouplist) {
11591 return -TARGET_EFAULT;
11592 }
11593 for (i = 0; i < ret; i++) {
11594 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
11595 }
11596 unlock_user(target_grouplist, arg2,
11597 gidsetsize * sizeof(target_id));
11598 }
11599 return ret;
11600 }
11601 case TARGET_NR_setgroups:
11602 {
11603 int gidsetsize = arg1;
11604 target_id *target_grouplist;
11605 g_autofree gid_t *grouplist = NULL;
11606 int i;
11607
11608 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
11609 return -TARGET_EINVAL;
11610 }
11611 if (gidsetsize > 0) {
11612 grouplist = g_try_new(gid_t, gidsetsize);
11613 if (!grouplist) {
11614 return -TARGET_ENOMEM;
11615 }
11616 target_grouplist = lock_user(VERIFY_READ, arg2,
11617 gidsetsize * sizeof(target_id), 1);
11618 if (!target_grouplist) {
11619 return -TARGET_EFAULT;
11620 }
11621 for (i = 0; i < gidsetsize; i++) {
11622 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
11623 }
11624 unlock_user(target_grouplist, arg2,
11625 gidsetsize * sizeof(target_id));
11626 }
11627 return get_errno(setgroups(gidsetsize, grouplist));
11628 }
11629 case TARGET_NR_fchown:
11630 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
11631 #if defined(TARGET_NR_fchownat)
11632 case TARGET_NR_fchownat:
11633 if (!(p = lock_user_string(arg2)))
11634 return -TARGET_EFAULT;
11635 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
11636 low2highgid(arg4), arg5));
11637 unlock_user(p, arg2, 0);
11638 return ret;
11639 #endif
11640 #ifdef TARGET_NR_setresuid
11641 case TARGET_NR_setresuid:
11642 return get_errno(sys_setresuid(low2highuid(arg1),
11643 low2highuid(arg2),
11644 low2highuid(arg3)));
11645 #endif
11646 #ifdef TARGET_NR_getresuid
11647 case TARGET_NR_getresuid:
11648 {
11649 uid_t ruid, euid, suid;
11650 ret = get_errno(getresuid(&ruid, &euid, &suid));
11651 if (!is_error(ret)) {
11652 if (put_user_id(high2lowuid(ruid), arg1)
11653 || put_user_id(high2lowuid(euid), arg2)
11654 || put_user_id(high2lowuid(suid), arg3))
11655 return -TARGET_EFAULT;
11656 }
11657 }
11658 return ret;
11659 #endif
11660 #ifdef TARGET_NR_getresgid
11661 case TARGET_NR_setresgid:
11662 return get_errno(sys_setresgid(low2highgid(arg1),
11663 low2highgid(arg2),
11664 low2highgid(arg3)));
11665 #endif
11666 #ifdef TARGET_NR_getresgid
11667 case TARGET_NR_getresgid:
11668 {
11669 gid_t rgid, egid, sgid;
11670 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11671 if (!is_error(ret)) {
11672 if (put_user_id(high2lowgid(rgid), arg1)
11673 || put_user_id(high2lowgid(egid), arg2)
11674 || put_user_id(high2lowgid(sgid), arg3))
11675 return -TARGET_EFAULT;
11676 }
11677 }
11678 return ret;
11679 #endif
11680 #ifdef TARGET_NR_chown
11681 case TARGET_NR_chown:
11682 if (!(p = lock_user_string(arg1)))
11683 return -TARGET_EFAULT;
11684 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
11685 unlock_user(p, arg1, 0);
11686 return ret;
11687 #endif
11688 case TARGET_NR_setuid:
11689 return get_errno(sys_setuid(low2highuid(arg1)));
11690 case TARGET_NR_setgid:
11691 return get_errno(sys_setgid(low2highgid(arg1)));
11692 case TARGET_NR_setfsuid:
11693 return get_errno(setfsuid(arg1));
11694 case TARGET_NR_setfsgid:
11695 return get_errno(setfsgid(arg1));
11696
11697 #ifdef TARGET_NR_lchown32
11698 case TARGET_NR_lchown32:
11699 if (!(p = lock_user_string(arg1)))
11700 return -TARGET_EFAULT;
11701 ret = get_errno(lchown(p, arg2, arg3));
11702 unlock_user(p, arg1, 0);
11703 return ret;
11704 #endif
11705 #ifdef TARGET_NR_getuid32
11706 case TARGET_NR_getuid32:
11707 return get_errno(getuid());
11708 #endif
11709
11710 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
11711 /* Alpha specific */
11712 case TARGET_NR_getxuid:
11713 {
11714 uid_t euid;
11715 euid=geteuid();
11716 cpu_env->ir[IR_A4]=euid;
11717 }
11718 return get_errno(getuid());
11719 #endif
11720 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
11721 /* Alpha specific */
11722 case TARGET_NR_getxgid:
11723 {
11724 uid_t egid;
11725 egid=getegid();
11726 cpu_env->ir[IR_A4]=egid;
11727 }
11728 return get_errno(getgid());
11729 #endif
11730 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
11731 /* Alpha specific */
11732 case TARGET_NR_osf_getsysinfo:
11733 ret = -TARGET_EOPNOTSUPP;
11734 switch (arg1) {
11735 case TARGET_GSI_IEEE_FP_CONTROL:
11736 {
11737 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
11738 uint64_t swcr = cpu_env->swcr;
11739
11740 swcr &= ~SWCR_STATUS_MASK;
11741 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
11742
11743 if (put_user_u64 (swcr, arg2))
11744 return -TARGET_EFAULT;
11745 ret = 0;
11746 }
11747 break;
11748
11749 /* case GSI_IEEE_STATE_AT_SIGNAL:
11750 -- Not implemented in linux kernel.
11751 case GSI_UACPROC:
11752 -- Retrieves current unaligned access state; not much used.
11753 case GSI_PROC_TYPE:
11754 -- Retrieves implver information; surely not used.
11755 case GSI_GET_HWRPB:
11756 -- Grabs a copy of the HWRPB; surely not used.
11757 */
11758 }
11759 return ret;
11760 #endif
11761 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
11762 /* Alpha specific */
11763 case TARGET_NR_osf_setsysinfo:
11764 ret = -TARGET_EOPNOTSUPP;
11765 switch (arg1) {
11766 case TARGET_SSI_IEEE_FP_CONTROL:
11767 {
11768 uint64_t swcr, fpcr;
11769
11770 if (get_user_u64 (swcr, arg2)) {
11771 return -TARGET_EFAULT;
11772 }
11773
11774 /*
11775 * The kernel calls swcr_update_status to update the
11776 * status bits from the fpcr at every point that it
11777 * could be queried. Therefore, we store the status
11778 * bits only in FPCR.
11779 */
11780 cpu_env->swcr = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
11781
11782 fpcr = cpu_alpha_load_fpcr(cpu_env);
11783 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
11784 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
11785 cpu_alpha_store_fpcr(cpu_env, fpcr);
11786 ret = 0;
11787 }
11788 break;
11789
11790 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
11791 {
11792 uint64_t exc, fpcr, fex;
11793
11794 if (get_user_u64(exc, arg2)) {
11795 return -TARGET_EFAULT;
11796 }
11797 exc &= SWCR_STATUS_MASK;
11798 fpcr = cpu_alpha_load_fpcr(cpu_env);
11799
11800 /* Old exceptions are not signaled. */
11801 fex = alpha_ieee_fpcr_to_swcr(fpcr);
11802 fex = exc & ~fex;
11803 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
11804 fex &= (cpu_env)->swcr;
11805
11806 /* Update the hardware fpcr. */
11807 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
11808 cpu_alpha_store_fpcr(cpu_env, fpcr);
11809
11810 if (fex) {
11811 int si_code = TARGET_FPE_FLTUNK;
11812 target_siginfo_t info;
11813
11814 if (fex & SWCR_TRAP_ENABLE_DNO) {
11815 si_code = TARGET_FPE_FLTUND;
11816 }
11817 if (fex & SWCR_TRAP_ENABLE_INE) {
11818 si_code = TARGET_FPE_FLTRES;
11819 }
11820 if (fex & SWCR_TRAP_ENABLE_UNF) {
11821 si_code = TARGET_FPE_FLTUND;
11822 }
11823 if (fex & SWCR_TRAP_ENABLE_OVF) {
11824 si_code = TARGET_FPE_FLTOVF;
11825 }
11826 if (fex & SWCR_TRAP_ENABLE_DZE) {
11827 si_code = TARGET_FPE_FLTDIV;
11828 }
11829 if (fex & SWCR_TRAP_ENABLE_INV) {
11830 si_code = TARGET_FPE_FLTINV;
11831 }
11832
11833 info.si_signo = SIGFPE;
11834 info.si_errno = 0;
11835 info.si_code = si_code;
11836 info._sifields._sigfault._addr = (cpu_env)->pc;
11837 queue_signal(cpu_env, info.si_signo,
11838 QEMU_SI_FAULT, &info);
11839 }
11840 ret = 0;
11841 }
11842 break;
11843
11844 /* case SSI_NVPAIRS:
11845 -- Used with SSIN_UACPROC to enable unaligned accesses.
11846 case SSI_IEEE_STATE_AT_SIGNAL:
11847 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
11848 -- Not implemented in linux kernel
11849 */
11850 }
11851 return ret;
11852 #endif
11853 #ifdef TARGET_NR_osf_sigprocmask
11854 /* Alpha specific. */
11855 case TARGET_NR_osf_sigprocmask:
11856 {
11857 abi_ulong mask;
11858 int how;
11859 sigset_t set, oldset;
11860
11861 switch(arg1) {
11862 case TARGET_SIG_BLOCK:
11863 how = SIG_BLOCK;
11864 break;
11865 case TARGET_SIG_UNBLOCK:
11866 how = SIG_UNBLOCK;
11867 break;
11868 case TARGET_SIG_SETMASK:
11869 how = SIG_SETMASK;
11870 break;
11871 default:
11872 return -TARGET_EINVAL;
11873 }
11874 mask = arg2;
11875 target_to_host_old_sigset(&set, &mask);
11876 ret = do_sigprocmask(how, &set, &oldset);
11877 if (!ret) {
11878 host_to_target_old_sigset(&mask, &oldset);
11879 ret = mask;
11880 }
11881 }
11882 return ret;
11883 #endif
11884
11885 #ifdef TARGET_NR_getgid32
11886 case TARGET_NR_getgid32:
11887 return get_errno(getgid());
11888 #endif
11889 #ifdef TARGET_NR_geteuid32
11890 case TARGET_NR_geteuid32:
11891 return get_errno(geteuid());
11892 #endif
11893 #ifdef TARGET_NR_getegid32
11894 case TARGET_NR_getegid32:
11895 return get_errno(getegid());
11896 #endif
11897 #ifdef TARGET_NR_setreuid32
11898 case TARGET_NR_setreuid32:
11899 return get_errno(setreuid(arg1, arg2));
11900 #endif
11901 #ifdef TARGET_NR_setregid32
11902 case TARGET_NR_setregid32:
11903 return get_errno(setregid(arg1, arg2));
11904 #endif
11905 #ifdef TARGET_NR_getgroups32
11906 case TARGET_NR_getgroups32:
11907 {
11908 int gidsetsize = arg1;
11909 uint32_t *target_grouplist;
11910 g_autofree gid_t *grouplist = NULL;
11911 int i;
11912
11913 if (gidsetsize > NGROUPS_MAX) {
11914 return -TARGET_EINVAL;
11915 }
11916 if (gidsetsize > 0) {
11917 grouplist = g_try_new(gid_t, gidsetsize);
11918 if (!grouplist) {
11919 return -TARGET_ENOMEM;
11920 }
11921 }
11922 ret = get_errno(getgroups(gidsetsize, grouplist));
11923 if (!is_error(ret) && gidsetsize > 0) {
11924 target_grouplist = lock_user(VERIFY_WRITE, arg2,
11925 gidsetsize * 4, 0);
11926 if (!target_grouplist) {
11927 return -TARGET_EFAULT;
11928 }
11929 for (i = 0; i < ret; i++) {
11930 target_grouplist[i] = tswap32(grouplist[i]);
11931 }
11932 unlock_user(target_grouplist, arg2, gidsetsize * 4);
11933 }
11934 return ret;
11935 }
11936 #endif
11937 #ifdef TARGET_NR_setgroups32
11938 case TARGET_NR_setgroups32:
11939 {
11940 int gidsetsize = arg1;
11941 uint32_t *target_grouplist;
11942 g_autofree gid_t *grouplist = NULL;
11943 int i;
11944
11945 if (gidsetsize > NGROUPS_MAX || gidsetsize < 0) {
11946 return -TARGET_EINVAL;
11947 }
11948 if (gidsetsize > 0) {
11949 grouplist = g_try_new(gid_t, gidsetsize);
11950 if (!grouplist) {
11951 return -TARGET_ENOMEM;
11952 }
11953 target_grouplist = lock_user(VERIFY_READ, arg2,
11954 gidsetsize * 4, 1);
11955 if (!target_grouplist) {
11956 return -TARGET_EFAULT;
11957 }
11958 for (i = 0; i < gidsetsize; i++) {
11959 grouplist[i] = tswap32(target_grouplist[i]);
11960 }
11961 unlock_user(target_grouplist, arg2, 0);
11962 }
11963 return get_errno(setgroups(gidsetsize, grouplist));
11964 }
11965 #endif
11966 #ifdef TARGET_NR_fchown32
11967 case TARGET_NR_fchown32:
11968 return get_errno(fchown(arg1, arg2, arg3));
11969 #endif
11970 #ifdef TARGET_NR_setresuid32
11971 case TARGET_NR_setresuid32:
11972 return get_errno(sys_setresuid(arg1, arg2, arg3));
11973 #endif
11974 #ifdef TARGET_NR_getresuid32
11975 case TARGET_NR_getresuid32:
11976 {
11977 uid_t ruid, euid, suid;
11978 ret = get_errno(getresuid(&ruid, &euid, &suid));
11979 if (!is_error(ret)) {
11980 if (put_user_u32(ruid, arg1)
11981 || put_user_u32(euid, arg2)
11982 || put_user_u32(suid, arg3))
11983 return -TARGET_EFAULT;
11984 }
11985 }
11986 return ret;
11987 #endif
11988 #ifdef TARGET_NR_setresgid32
11989 case TARGET_NR_setresgid32:
11990 return get_errno(sys_setresgid(arg1, arg2, arg3));
11991 #endif
11992 #ifdef TARGET_NR_getresgid32
11993 case TARGET_NR_getresgid32:
11994 {
11995 gid_t rgid, egid, sgid;
11996 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11997 if (!is_error(ret)) {
11998 if (put_user_u32(rgid, arg1)
11999 || put_user_u32(egid, arg2)
12000 || put_user_u32(sgid, arg3))
12001 return -TARGET_EFAULT;
12002 }
12003 }
12004 return ret;
12005 #endif
12006 #ifdef TARGET_NR_chown32
12007 case TARGET_NR_chown32:
12008 if (!(p = lock_user_string(arg1)))
12009 return -TARGET_EFAULT;
12010 ret = get_errno(chown(p, arg2, arg3));
12011 unlock_user(p, arg1, 0);
12012 return ret;
12013 #endif
12014 #ifdef TARGET_NR_setuid32
12015 case TARGET_NR_setuid32:
12016 return get_errno(sys_setuid(arg1));
12017 #endif
12018 #ifdef TARGET_NR_setgid32
12019 case TARGET_NR_setgid32:
12020 return get_errno(sys_setgid(arg1));
12021 #endif
12022 #ifdef TARGET_NR_setfsuid32
12023 case TARGET_NR_setfsuid32:
12024 return get_errno(setfsuid(arg1));
12025 #endif
12026 #ifdef TARGET_NR_setfsgid32
12027 case TARGET_NR_setfsgid32:
12028 return get_errno(setfsgid(arg1));
12029 #endif
12030 #ifdef TARGET_NR_mincore
12031 case TARGET_NR_mincore:
12032 {
12033 void *a = lock_user(VERIFY_NONE, arg1, arg2, 0);
12034 if (!a) {
12035 return -TARGET_ENOMEM;
12036 }
12037 p = lock_user_string(arg3);
12038 if (!p) {
12039 ret = -TARGET_EFAULT;
12040 } else {
12041 ret = get_errno(mincore(a, arg2, p));
12042 unlock_user(p, arg3, ret);
12043 }
12044 unlock_user(a, arg1, 0);
12045 }
12046 return ret;
12047 #endif
12048 #ifdef TARGET_NR_arm_fadvise64_64
12049 case TARGET_NR_arm_fadvise64_64:
12050 /* arm_fadvise64_64 looks like fadvise64_64 but
12051 * with different argument order: fd, advice, offset, len
12052 * rather than the usual fd, offset, len, advice.
12053 * Note that offset and len are both 64-bit so appear as
12054 * pairs of 32-bit registers.
12055 */
12056 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
12057 target_offset64(arg5, arg6), arg2);
12058 return -host_to_target_errno(ret);
12059 #endif
12060
12061 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12062
12063 #ifdef TARGET_NR_fadvise64_64
12064 case TARGET_NR_fadvise64_64:
12065 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
12066 /* 6 args: fd, advice, offset (high, low), len (high, low) */
12067 ret = arg2;
12068 arg2 = arg3;
12069 arg3 = arg4;
12070 arg4 = arg5;
12071 arg5 = arg6;
12072 arg6 = ret;
12073 #else
12074 /* 6 args: fd, offset (high, low), len (high, low), advice */
12075 if (regpairs_aligned(cpu_env, num)) {
12076 /* offset is in (3,4), len in (5,6) and advice in 7 */
12077 arg2 = arg3;
12078 arg3 = arg4;
12079 arg4 = arg5;
12080 arg5 = arg6;
12081 arg6 = arg7;
12082 }
12083 #endif
12084 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
12085 target_offset64(arg4, arg5), arg6);
12086 return -host_to_target_errno(ret);
12087 #endif
12088
12089 #ifdef TARGET_NR_fadvise64
12090 case TARGET_NR_fadvise64:
12091 /* 5 args: fd, offset (high, low), len, advice */
12092 if (regpairs_aligned(cpu_env, num)) {
12093 /* offset is in (3,4), len in 5 and advice in 6 */
12094 arg2 = arg3;
12095 arg3 = arg4;
12096 arg4 = arg5;
12097 arg5 = arg6;
12098 }
12099 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
12100 return -host_to_target_errno(ret);
12101 #endif
12102
12103 #else /* not a 32-bit ABI */
12104 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
12105 #ifdef TARGET_NR_fadvise64_64
12106 case TARGET_NR_fadvise64_64:
12107 #endif
12108 #ifdef TARGET_NR_fadvise64
12109 case TARGET_NR_fadvise64:
12110 #endif
12111 #ifdef TARGET_S390X
12112 switch (arg4) {
12113 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
12114 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
12115 case 6: arg4 = POSIX_FADV_DONTNEED; break;
12116 case 7: arg4 = POSIX_FADV_NOREUSE; break;
12117 default: break;
12118 }
12119 #endif
12120 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
12121 #endif
12122 #endif /* end of 64-bit ABI fadvise handling */
12123
12124 #ifdef TARGET_NR_madvise
12125 case TARGET_NR_madvise:
12126 return target_madvise(arg1, arg2, arg3);
12127 #endif
12128 #ifdef TARGET_NR_fcntl64
12129 case TARGET_NR_fcntl64:
12130 {
12131 int cmd;
12132 struct flock64 fl;
12133 from_flock64_fn *copyfrom = copy_from_user_flock64;
12134 to_flock64_fn *copyto = copy_to_user_flock64;
12135
12136 #ifdef TARGET_ARM
12137 if (!cpu_env->eabi) {
12138 copyfrom = copy_from_user_oabi_flock64;
12139 copyto = copy_to_user_oabi_flock64;
12140 }
12141 #endif
12142
12143 cmd = target_to_host_fcntl_cmd(arg2);
12144 if (cmd == -TARGET_EINVAL) {
12145 return cmd;
12146 }
12147
12148 switch(arg2) {
12149 case TARGET_F_GETLK64:
12150 ret = copyfrom(&fl, arg3);
12151 if (ret) {
12152 break;
12153 }
12154 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
12155 if (ret == 0) {
12156 ret = copyto(arg3, &fl);
12157 }
12158 break;
12159
12160 case TARGET_F_SETLK64:
12161 case TARGET_F_SETLKW64:
12162 ret = copyfrom(&fl, arg3);
12163 if (ret) {
12164 break;
12165 }
12166 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
12167 break;
12168 default:
12169 ret = do_fcntl(arg1, arg2, arg3);
12170 break;
12171 }
12172 return ret;
12173 }
12174 #endif
12175 #ifdef TARGET_NR_cacheflush
12176 case TARGET_NR_cacheflush:
12177 /* self-modifying code is handled automatically, so nothing needed */
12178 return 0;
12179 #endif
12180 #ifdef TARGET_NR_getpagesize
12181 case TARGET_NR_getpagesize:
12182 return TARGET_PAGE_SIZE;
12183 #endif
12184 case TARGET_NR_gettid:
12185 return get_errno(sys_gettid());
12186 #ifdef TARGET_NR_readahead
12187 case TARGET_NR_readahead:
12188 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12189 if (regpairs_aligned(cpu_env, num)) {
12190 arg2 = arg3;
12191 arg3 = arg4;
12192 arg4 = arg5;
12193 }
12194 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
12195 #else
12196 ret = get_errno(readahead(arg1, arg2, arg3));
12197 #endif
12198 return ret;
12199 #endif
12200 #ifdef CONFIG_ATTR
12201 #ifdef TARGET_NR_setxattr
12202 case TARGET_NR_listxattr:
12203 case TARGET_NR_llistxattr:
12204 {
12205 void *p, *b = 0;
12206 if (arg2) {
12207 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
12208 if (!b) {
12209 return -TARGET_EFAULT;
12210 }
12211 }
12212 p = lock_user_string(arg1);
12213 if (p) {
12214 if (num == TARGET_NR_listxattr) {
12215 ret = get_errno(listxattr(p, b, arg3));
12216 } else {
12217 ret = get_errno(llistxattr(p, b, arg3));
12218 }
12219 } else {
12220 ret = -TARGET_EFAULT;
12221 }
12222 unlock_user(p, arg1, 0);
12223 unlock_user(b, arg2, arg3);
12224 return ret;
12225 }
12226 case TARGET_NR_flistxattr:
12227 {
12228 void *b = 0;
12229 if (arg2) {
12230 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
12231 if (!b) {
12232 return -TARGET_EFAULT;
12233 }
12234 }
12235 ret = get_errno(flistxattr(arg1, b, arg3));
12236 unlock_user(b, arg2, arg3);
12237 return ret;
12238 }
12239 case TARGET_NR_setxattr:
12240 case TARGET_NR_lsetxattr:
12241 {
12242 void *p, *n, *v = 0;
12243 if (arg3) {
12244 v = lock_user(VERIFY_READ, arg3, arg4, 1);
12245 if (!v) {
12246 return -TARGET_EFAULT;
12247 }
12248 }
12249 p = lock_user_string(arg1);
12250 n = lock_user_string(arg2);
12251 if (p && n) {
12252 if (num == TARGET_NR_setxattr) {
12253 ret = get_errno(setxattr(p, n, v, arg4, arg5));
12254 } else {
12255 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
12256 }
12257 } else {
12258 ret = -TARGET_EFAULT;
12259 }
12260 unlock_user(p, arg1, 0);
12261 unlock_user(n, arg2, 0);
12262 unlock_user(v, arg3, 0);
12263 }
12264 return ret;
12265 case TARGET_NR_fsetxattr:
12266 {
12267 void *n, *v = 0;
12268 if (arg3) {
12269 v = lock_user(VERIFY_READ, arg3, arg4, 1);
12270 if (!v) {
12271 return -TARGET_EFAULT;
12272 }
12273 }
12274 n = lock_user_string(arg2);
12275 if (n) {
12276 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
12277 } else {
12278 ret = -TARGET_EFAULT;
12279 }
12280 unlock_user(n, arg2, 0);
12281 unlock_user(v, arg3, 0);
12282 }
12283 return ret;
12284 case TARGET_NR_getxattr:
12285 case TARGET_NR_lgetxattr:
12286 {
12287 void *p, *n, *v = 0;
12288 if (arg3) {
12289 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
12290 if (!v) {
12291 return -TARGET_EFAULT;
12292 }
12293 }
12294 p = lock_user_string(arg1);
12295 n = lock_user_string(arg2);
12296 if (p && n) {
12297 if (num == TARGET_NR_getxattr) {
12298 ret = get_errno(getxattr(p, n, v, arg4));
12299 } else {
12300 ret = get_errno(lgetxattr(p, n, v, arg4));
12301 }
12302 } else {
12303 ret = -TARGET_EFAULT;
12304 }
12305 unlock_user(p, arg1, 0);
12306 unlock_user(n, arg2, 0);
12307 unlock_user(v, arg3, arg4);
12308 }
12309 return ret;
12310 case TARGET_NR_fgetxattr:
12311 {
12312 void *n, *v = 0;
12313 if (arg3) {
12314 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
12315 if (!v) {
12316 return -TARGET_EFAULT;
12317 }
12318 }
12319 n = lock_user_string(arg2);
12320 if (n) {
12321 ret = get_errno(fgetxattr(arg1, n, v, arg4));
12322 } else {
12323 ret = -TARGET_EFAULT;
12324 }
12325 unlock_user(n, arg2, 0);
12326 unlock_user(v, arg3, arg4);
12327 }
12328 return ret;
12329 case TARGET_NR_removexattr:
12330 case TARGET_NR_lremovexattr:
12331 {
12332 void *p, *n;
12333 p = lock_user_string(arg1);
12334 n = lock_user_string(arg2);
12335 if (p && n) {
12336 if (num == TARGET_NR_removexattr) {
12337 ret = get_errno(removexattr(p, n));
12338 } else {
12339 ret = get_errno(lremovexattr(p, n));
12340 }
12341 } else {
12342 ret = -TARGET_EFAULT;
12343 }
12344 unlock_user(p, arg1, 0);
12345 unlock_user(n, arg2, 0);
12346 }
12347 return ret;
12348 case TARGET_NR_fremovexattr:
12349 {
12350 void *n;
12351 n = lock_user_string(arg2);
12352 if (n) {
12353 ret = get_errno(fremovexattr(arg1, n));
12354 } else {
12355 ret = -TARGET_EFAULT;
12356 }
12357 unlock_user(n, arg2, 0);
12358 }
12359 return ret;
12360 #endif
12361 #endif /* CONFIG_ATTR */
12362 #ifdef TARGET_NR_set_thread_area
12363 case TARGET_NR_set_thread_area:
12364 #if defined(TARGET_MIPS)
12365 cpu_env->active_tc.CP0_UserLocal = arg1;
12366 return 0;
12367 #elif defined(TARGET_CRIS)
12368 if (arg1 & 0xff)
12369 ret = -TARGET_EINVAL;
12370 else {
12371 cpu_env->pregs[PR_PID] = arg1;
12372 ret = 0;
12373 }
12374 return ret;
12375 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
12376 return do_set_thread_area(cpu_env, arg1);
12377 #elif defined(TARGET_M68K)
12378 {
12379 TaskState *ts = cpu->opaque;
12380 ts->tp_value = arg1;
12381 return 0;
12382 }
12383 #else
12384 return -TARGET_ENOSYS;
12385 #endif
12386 #endif
12387 #ifdef TARGET_NR_get_thread_area
12388 case TARGET_NR_get_thread_area:
12389 #if defined(TARGET_I386) && defined(TARGET_ABI32)
12390 return do_get_thread_area(cpu_env, arg1);
12391 #elif defined(TARGET_M68K)
12392 {
12393 TaskState *ts = cpu->opaque;
12394 return ts->tp_value;
12395 }
12396 #else
12397 return -TARGET_ENOSYS;
12398 #endif
12399 #endif
12400 #ifdef TARGET_NR_getdomainname
12401 case TARGET_NR_getdomainname:
12402 return -TARGET_ENOSYS;
12403 #endif
12404
12405 #ifdef TARGET_NR_clock_settime
12406 case TARGET_NR_clock_settime:
12407 {
12408 struct timespec ts;
12409
12410 ret = target_to_host_timespec(&ts, arg2);
12411 if (!is_error(ret)) {
12412 ret = get_errno(clock_settime(arg1, &ts));
12413 }
12414 return ret;
12415 }
12416 #endif
12417 #ifdef TARGET_NR_clock_settime64
12418 case TARGET_NR_clock_settime64:
12419 {
12420 struct timespec ts;
12421
12422 ret = target_to_host_timespec64(&ts, arg2);
12423 if (!is_error(ret)) {
12424 ret = get_errno(clock_settime(arg1, &ts));
12425 }
12426 return ret;
12427 }
12428 #endif
12429 #ifdef TARGET_NR_clock_gettime
12430 case TARGET_NR_clock_gettime:
12431 {
12432 struct timespec ts;
12433 ret = get_errno(clock_gettime(arg1, &ts));
12434 if (!is_error(ret)) {
12435 ret = host_to_target_timespec(arg2, &ts);
12436 }
12437 return ret;
12438 }
12439 #endif
12440 #ifdef TARGET_NR_clock_gettime64
12441 case TARGET_NR_clock_gettime64:
12442 {
12443 struct timespec ts;
12444 ret = get_errno(clock_gettime(arg1, &ts));
12445 if (!is_error(ret)) {
12446 ret = host_to_target_timespec64(arg2, &ts);
12447 }
12448 return ret;
12449 }
12450 #endif
12451 #ifdef TARGET_NR_clock_getres
12452 case TARGET_NR_clock_getres:
12453 {
12454 struct timespec ts;
12455 ret = get_errno(clock_getres(arg1, &ts));
12456 if (!is_error(ret)) {
12457 host_to_target_timespec(arg2, &ts);
12458 }
12459 return ret;
12460 }
12461 #endif
12462 #ifdef TARGET_NR_clock_getres_time64
12463 case TARGET_NR_clock_getres_time64:
12464 {
12465 struct timespec ts;
12466 ret = get_errno(clock_getres(arg1, &ts));
12467 if (!is_error(ret)) {
12468 host_to_target_timespec64(arg2, &ts);
12469 }
12470 return ret;
12471 }
12472 #endif
12473 #ifdef TARGET_NR_clock_nanosleep
12474 case TARGET_NR_clock_nanosleep:
12475 {
12476 struct timespec ts;
12477 if (target_to_host_timespec(&ts, arg3)) {
12478 return -TARGET_EFAULT;
12479 }
12480 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12481 &ts, arg4 ? &ts : NULL));
12482 /*
12483 * if the call is interrupted by a signal handler, it fails
12484 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not
12485 * TIMER_ABSTIME, it returns the remaining unslept time in arg4.
12486 */
12487 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12488 host_to_target_timespec(arg4, &ts)) {
12489 return -TARGET_EFAULT;
12490 }
12491
12492 return ret;
12493 }
12494 #endif
12495 #ifdef TARGET_NR_clock_nanosleep_time64
12496 case TARGET_NR_clock_nanosleep_time64:
12497 {
12498 struct timespec ts;
12499
12500 if (target_to_host_timespec64(&ts, arg3)) {
12501 return -TARGET_EFAULT;
12502 }
12503
12504 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12505 &ts, arg4 ? &ts : NULL));
12506
12507 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12508 host_to_target_timespec64(arg4, &ts)) {
12509 return -TARGET_EFAULT;
12510 }
12511 return ret;
12512 }
12513 #endif
12514
12515 #if defined(TARGET_NR_set_tid_address)
12516 case TARGET_NR_set_tid_address:
12517 {
12518 TaskState *ts = cpu->opaque;
12519 ts->child_tidptr = arg1;
12520 /* do not call host set_tid_address() syscall, instead return tid() */
12521 return get_errno(sys_gettid());
12522 }
12523 #endif
12524
12525 case TARGET_NR_tkill:
12526 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
12527
12528 case TARGET_NR_tgkill:
12529 return get_errno(safe_tgkill((int)arg1, (int)arg2,
12530 target_to_host_signal(arg3)));
12531
12532 #ifdef TARGET_NR_set_robust_list
12533 case TARGET_NR_set_robust_list:
12534 case TARGET_NR_get_robust_list:
12535 /* The ABI for supporting robust futexes has userspace pass
12536 * the kernel a pointer to a linked list which is updated by
12537 * userspace after the syscall; the list is walked by the kernel
12538 * when the thread exits. Since the linked list in QEMU guest
12539 * memory isn't a valid linked list for the host and we have
12540 * no way to reliably intercept the thread-death event, we can't
12541 * support these. Silently return ENOSYS so that guest userspace
12542 * falls back to a non-robust futex implementation (which should
12543 * be OK except in the corner case of the guest crashing while
12544 * holding a mutex that is shared with another process via
12545 * shared memory).
12546 */
12547 return -TARGET_ENOSYS;
12548 #endif
12549
12550 #if defined(TARGET_NR_utimensat)
12551 case TARGET_NR_utimensat:
12552 {
12553 struct timespec *tsp, ts[2];
12554 if (!arg3) {
12555 tsp = NULL;
12556 } else {
12557 if (target_to_host_timespec(ts, arg3)) {
12558 return -TARGET_EFAULT;
12559 }
12560 if (target_to_host_timespec(ts + 1, arg3 +
12561 sizeof(struct target_timespec))) {
12562 return -TARGET_EFAULT;
12563 }
12564 tsp = ts;
12565 }
12566 if (!arg2)
12567 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12568 else {
12569 if (!(p = lock_user_string(arg2))) {
12570 return -TARGET_EFAULT;
12571 }
12572 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12573 unlock_user(p, arg2, 0);
12574 }
12575 }
12576 return ret;
12577 #endif
12578 #ifdef TARGET_NR_utimensat_time64
12579 case TARGET_NR_utimensat_time64:
12580 {
12581 struct timespec *tsp, ts[2];
12582 if (!arg3) {
12583 tsp = NULL;
12584 } else {
12585 if (target_to_host_timespec64(ts, arg3)) {
12586 return -TARGET_EFAULT;
12587 }
12588 if (target_to_host_timespec64(ts + 1, arg3 +
12589 sizeof(struct target__kernel_timespec))) {
12590 return -TARGET_EFAULT;
12591 }
12592 tsp = ts;
12593 }
12594 if (!arg2)
12595 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12596 else {
12597 p = lock_user_string(arg2);
12598 if (!p) {
12599 return -TARGET_EFAULT;
12600 }
12601 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12602 unlock_user(p, arg2, 0);
12603 }
12604 }
12605 return ret;
12606 #endif
12607 #ifdef TARGET_NR_futex
12608 case TARGET_NR_futex:
12609 return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6);
12610 #endif
12611 #ifdef TARGET_NR_futex_time64
12612 case TARGET_NR_futex_time64:
12613 return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6);
12614 #endif
12615 #ifdef CONFIG_INOTIFY
12616 #if defined(TARGET_NR_inotify_init)
12617 case TARGET_NR_inotify_init:
12618 ret = get_errno(inotify_init());
12619 if (ret >= 0) {
12620 fd_trans_register(ret, &target_inotify_trans);
12621 }
12622 return ret;
12623 #endif
12624 #if defined(TARGET_NR_inotify_init1) && defined(CONFIG_INOTIFY1)
12625 case TARGET_NR_inotify_init1:
12626 ret = get_errno(inotify_init1(target_to_host_bitmask(arg1,
12627 fcntl_flags_tbl)));
12628 if (ret >= 0) {
12629 fd_trans_register(ret, &target_inotify_trans);
12630 }
12631 return ret;
12632 #endif
12633 #if defined(TARGET_NR_inotify_add_watch)
12634 case TARGET_NR_inotify_add_watch:
12635 p = lock_user_string(arg2);
12636 ret = get_errno(inotify_add_watch(arg1, path(p), arg3));
12637 unlock_user(p, arg2, 0);
12638 return ret;
12639 #endif
12640 #if defined(TARGET_NR_inotify_rm_watch)
12641 case TARGET_NR_inotify_rm_watch:
12642 return get_errno(inotify_rm_watch(arg1, arg2));
12643 #endif
12644 #endif
12645
12646 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
12647 case TARGET_NR_mq_open:
12648 {
12649 struct mq_attr posix_mq_attr;
12650 struct mq_attr *pposix_mq_attr;
12651 int host_flags;
12652
12653 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
12654 pposix_mq_attr = NULL;
12655 if (arg4) {
12656 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
12657 return -TARGET_EFAULT;
12658 }
12659 pposix_mq_attr = &posix_mq_attr;
12660 }
12661 p = lock_user_string(arg1 - 1);
12662 if (!p) {
12663 return -TARGET_EFAULT;
12664 }
12665 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
12666 unlock_user (p, arg1, 0);
12667 }
12668 return ret;
12669
12670 case TARGET_NR_mq_unlink:
12671 p = lock_user_string(arg1 - 1);
12672 if (!p) {
12673 return -TARGET_EFAULT;
12674 }
12675 ret = get_errno(mq_unlink(p));
12676 unlock_user (p, arg1, 0);
12677 return ret;
12678
12679 #ifdef TARGET_NR_mq_timedsend
12680 case TARGET_NR_mq_timedsend:
12681 {
12682 struct timespec ts;
12683
12684 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12685 if (arg5 != 0) {
12686 if (target_to_host_timespec(&ts, arg5)) {
12687 return -TARGET_EFAULT;
12688 }
12689 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12690 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12691 return -TARGET_EFAULT;
12692 }
12693 } else {
12694 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12695 }
12696 unlock_user (p, arg2, arg3);
12697 }
12698 return ret;
12699 #endif
12700 #ifdef TARGET_NR_mq_timedsend_time64
12701 case TARGET_NR_mq_timedsend_time64:
12702 {
12703 struct timespec ts;
12704
12705 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12706 if (arg5 != 0) {
12707 if (target_to_host_timespec64(&ts, arg5)) {
12708 return -TARGET_EFAULT;
12709 }
12710 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12711 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12712 return -TARGET_EFAULT;
12713 }
12714 } else {
12715 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12716 }
12717 unlock_user(p, arg2, arg3);
12718 }
12719 return ret;
12720 #endif
12721
12722 #ifdef TARGET_NR_mq_timedreceive
12723 case TARGET_NR_mq_timedreceive:
12724 {
12725 struct timespec ts;
12726 unsigned int prio;
12727
12728 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12729 if (arg5 != 0) {
12730 if (target_to_host_timespec(&ts, arg5)) {
12731 return -TARGET_EFAULT;
12732 }
12733 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12734 &prio, &ts));
12735 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12736 return -TARGET_EFAULT;
12737 }
12738 } else {
12739 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12740 &prio, NULL));
12741 }
12742 unlock_user (p, arg2, arg3);
12743 if (arg4 != 0)
12744 put_user_u32(prio, arg4);
12745 }
12746 return ret;
12747 #endif
12748 #ifdef TARGET_NR_mq_timedreceive_time64
12749 case TARGET_NR_mq_timedreceive_time64:
12750 {
12751 struct timespec ts;
12752 unsigned int prio;
12753
12754 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12755 if (arg5 != 0) {
12756 if (target_to_host_timespec64(&ts, arg5)) {
12757 return -TARGET_EFAULT;
12758 }
12759 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12760 &prio, &ts));
12761 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12762 return -TARGET_EFAULT;
12763 }
12764 } else {
12765 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12766 &prio, NULL));
12767 }
12768 unlock_user(p, arg2, arg3);
12769 if (arg4 != 0) {
12770 put_user_u32(prio, arg4);
12771 }
12772 }
12773 return ret;
12774 #endif
12775
12776 /* Not implemented for now... */
12777 /* case TARGET_NR_mq_notify: */
12778 /* break; */
12779
12780 case TARGET_NR_mq_getsetattr:
12781 {
12782 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
12783 ret = 0;
12784 if (arg2 != 0) {
12785 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
12786 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
12787 &posix_mq_attr_out));
12788 } else if (arg3 != 0) {
12789 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
12790 }
12791 if (ret == 0 && arg3 != 0) {
12792 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
12793 }
12794 }
12795 return ret;
12796 #endif
12797
12798 #ifdef CONFIG_SPLICE
12799 #ifdef TARGET_NR_tee
12800 case TARGET_NR_tee:
12801 {
12802 ret = get_errno(tee(arg1,arg2,arg3,arg4));
12803 }
12804 return ret;
12805 #endif
12806 #ifdef TARGET_NR_splice
12807 case TARGET_NR_splice:
12808 {
12809 loff_t loff_in, loff_out;
12810 loff_t *ploff_in = NULL, *ploff_out = NULL;
12811 if (arg2) {
12812 if (get_user_u64(loff_in, arg2)) {
12813 return -TARGET_EFAULT;
12814 }
12815 ploff_in = &loff_in;
12816 }
12817 if (arg4) {
12818 if (get_user_u64(loff_out, arg4)) {
12819 return -TARGET_EFAULT;
12820 }
12821 ploff_out = &loff_out;
12822 }
12823 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
12824 if (arg2) {
12825 if (put_user_u64(loff_in, arg2)) {
12826 return -TARGET_EFAULT;
12827 }
12828 }
12829 if (arg4) {
12830 if (put_user_u64(loff_out, arg4)) {
12831 return -TARGET_EFAULT;
12832 }
12833 }
12834 }
12835 return ret;
12836 #endif
12837 #ifdef TARGET_NR_vmsplice
12838 case TARGET_NR_vmsplice:
12839 {
12840 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
12841 if (vec != NULL) {
12842 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
12843 unlock_iovec(vec, arg2, arg3, 0);
12844 } else {
12845 ret = -host_to_target_errno(errno);
12846 }
12847 }
12848 return ret;
12849 #endif
12850 #endif /* CONFIG_SPLICE */
12851 #ifdef CONFIG_EVENTFD
12852 #if defined(TARGET_NR_eventfd)
12853 case TARGET_NR_eventfd:
12854 ret = get_errno(eventfd(arg1, 0));
12855 if (ret >= 0) {
12856 fd_trans_register(ret, &target_eventfd_trans);
12857 }
12858 return ret;
12859 #endif
12860 #if defined(TARGET_NR_eventfd2)
12861 case TARGET_NR_eventfd2:
12862 {
12863 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC));
12864 if (arg2 & TARGET_O_NONBLOCK) {
12865 host_flags |= O_NONBLOCK;
12866 }
12867 if (arg2 & TARGET_O_CLOEXEC) {
12868 host_flags |= O_CLOEXEC;
12869 }
12870 ret = get_errno(eventfd(arg1, host_flags));
12871 if (ret >= 0) {
12872 fd_trans_register(ret, &target_eventfd_trans);
12873 }
12874 return ret;
12875 }
12876 #endif
12877 #endif /* CONFIG_EVENTFD */
12878 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
12879 case TARGET_NR_fallocate:
12880 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12881 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
12882 target_offset64(arg5, arg6)));
12883 #else
12884 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
12885 #endif
12886 return ret;
12887 #endif
12888 #if defined(CONFIG_SYNC_FILE_RANGE)
12889 #if defined(TARGET_NR_sync_file_range)
12890 case TARGET_NR_sync_file_range:
12891 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12892 #if defined(TARGET_MIPS)
12893 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12894 target_offset64(arg5, arg6), arg7));
12895 #else
12896 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
12897 target_offset64(arg4, arg5), arg6));
12898 #endif /* !TARGET_MIPS */
12899 #else
12900 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
12901 #endif
12902 return ret;
12903 #endif
12904 #if defined(TARGET_NR_sync_file_range2) || \
12905 defined(TARGET_NR_arm_sync_file_range)
12906 #if defined(TARGET_NR_sync_file_range2)
12907 case TARGET_NR_sync_file_range2:
12908 #endif
12909 #if defined(TARGET_NR_arm_sync_file_range)
12910 case TARGET_NR_arm_sync_file_range:
12911 #endif
12912 /* This is like sync_file_range but the arguments are reordered */
12913 #if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
12914 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12915 target_offset64(arg5, arg6), arg2));
12916 #else
12917 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
12918 #endif
12919 return ret;
12920 #endif
12921 #endif
12922 #if defined(TARGET_NR_signalfd4)
12923 case TARGET_NR_signalfd4:
12924 return do_signalfd4(arg1, arg2, arg4);
12925 #endif
12926 #if defined(TARGET_NR_signalfd)
12927 case TARGET_NR_signalfd:
12928 return do_signalfd4(arg1, arg2, 0);
12929 #endif
12930 #if defined(CONFIG_EPOLL)
12931 #if defined(TARGET_NR_epoll_create)
12932 case TARGET_NR_epoll_create:
12933 return get_errno(epoll_create(arg1));
12934 #endif
12935 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
12936 case TARGET_NR_epoll_create1:
12937 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
12938 #endif
12939 #if defined(TARGET_NR_epoll_ctl)
12940 case TARGET_NR_epoll_ctl:
12941 {
12942 struct epoll_event ep;
12943 struct epoll_event *epp = 0;
12944 if (arg4) {
12945 if (arg2 != EPOLL_CTL_DEL) {
12946 struct target_epoll_event *target_ep;
12947 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
12948 return -TARGET_EFAULT;
12949 }
12950 ep.events = tswap32(target_ep->events);
12951 /*
12952 * The epoll_data_t union is just opaque data to the kernel,
12953 * so we transfer all 64 bits across and need not worry what
12954 * actual data type it is.
12955 */
12956 ep.data.u64 = tswap64(target_ep->data.u64);
12957 unlock_user_struct(target_ep, arg4, 0);
12958 }
12959 /*
12960 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a
12961 * non-null pointer, even though this argument is ignored.
12962 *
12963 */
12964 epp = &ep;
12965 }
12966 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
12967 }
12968 #endif
12969
12970 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
12971 #if defined(TARGET_NR_epoll_wait)
12972 case TARGET_NR_epoll_wait:
12973 #endif
12974 #if defined(TARGET_NR_epoll_pwait)
12975 case TARGET_NR_epoll_pwait:
12976 #endif
12977 {
12978 struct target_epoll_event *target_ep;
12979 struct epoll_event *ep;
12980 int epfd = arg1;
12981 int maxevents = arg3;
12982 int timeout = arg4;
12983
12984 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
12985 return -TARGET_EINVAL;
12986 }
12987
12988 target_ep = lock_user(VERIFY_WRITE, arg2,
12989 maxevents * sizeof(struct target_epoll_event), 1);
12990 if (!target_ep) {
12991 return -TARGET_EFAULT;
12992 }
12993
12994 ep = g_try_new(struct epoll_event, maxevents);
12995 if (!ep) {
12996 unlock_user(target_ep, arg2, 0);
12997 return -TARGET_ENOMEM;
12998 }
12999
13000 switch (num) {
13001 #if defined(TARGET_NR_epoll_pwait)
13002 case TARGET_NR_epoll_pwait:
13003 {
13004 sigset_t *set = NULL;
13005
13006 if (arg5) {
13007 ret = process_sigsuspend_mask(&set, arg5, arg6);
13008 if (ret != 0) {
13009 break;
13010 }
13011 }
13012
13013 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
13014 set, SIGSET_T_SIZE));
13015
13016 if (set) {
13017 finish_sigsuspend_mask(ret);
13018 }
13019 break;
13020 }
13021 #endif
13022 #if defined(TARGET_NR_epoll_wait)
13023 case TARGET_NR_epoll_wait:
13024 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
13025 NULL, 0));
13026 break;
13027 #endif
13028 default:
13029 ret = -TARGET_ENOSYS;
13030 }
13031 if (!is_error(ret)) {
13032 int i;
13033 for (i = 0; i < ret; i++) {
13034 target_ep[i].events = tswap32(ep[i].events);
13035 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
13036 }
13037 unlock_user(target_ep, arg2,
13038 ret * sizeof(struct target_epoll_event));
13039 } else {
13040 unlock_user(target_ep, arg2, 0);
13041 }
13042 g_free(ep);
13043 return ret;
13044 }
13045 #endif
13046 #endif
13047 #ifdef TARGET_NR_prlimit64
13048 case TARGET_NR_prlimit64:
13049 {
13050 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
13051 struct target_rlimit64 *target_rnew, *target_rold;
13052 struct host_rlimit64 rnew, rold, *rnewp = 0;
13053 int resource = target_to_host_resource(arg2);
13054
13055 if (arg3 && (resource != RLIMIT_AS &&
13056 resource != RLIMIT_DATA &&
13057 resource != RLIMIT_STACK)) {
13058 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
13059 return -TARGET_EFAULT;
13060 }
13061 __get_user(rnew.rlim_cur, &target_rnew->rlim_cur);
13062 __get_user(rnew.rlim_max, &target_rnew->rlim_max);
13063 unlock_user_struct(target_rnew, arg3, 0);
13064 rnewp = &rnew;
13065 }
13066
13067 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
13068 if (!is_error(ret) && arg4) {
13069 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
13070 return -TARGET_EFAULT;
13071 }
13072 __put_user(rold.rlim_cur, &target_rold->rlim_cur);
13073 __put_user(rold.rlim_max, &target_rold->rlim_max);
13074 unlock_user_struct(target_rold, arg4, 1);
13075 }
13076 return ret;
13077 }
13078 #endif
13079 #ifdef TARGET_NR_gethostname
13080 case TARGET_NR_gethostname:
13081 {
13082 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
13083 if (name) {
13084 ret = get_errno(gethostname(name, arg2));
13085 unlock_user(name, arg1, arg2);
13086 } else {
13087 ret = -TARGET_EFAULT;
13088 }
13089 return ret;
13090 }
13091 #endif
13092 #ifdef TARGET_NR_atomic_cmpxchg_32
13093 case TARGET_NR_atomic_cmpxchg_32:
13094 {
13095 /* should use start_exclusive from main.c */
13096 abi_ulong mem_value;
13097 if (get_user_u32(mem_value, arg6)) {
13098 target_siginfo_t info;
13099 info.si_signo = SIGSEGV;
13100 info.si_errno = 0;
13101 info.si_code = TARGET_SEGV_MAPERR;
13102 info._sifields._sigfault._addr = arg6;
13103 queue_signal(cpu_env, info.si_signo, QEMU_SI_FAULT, &info);
13104 ret = 0xdeadbeef;
13105
13106 }
13107 if (mem_value == arg2)
13108 put_user_u32(arg1, arg6);
13109 return mem_value;
13110 }
13111 #endif
13112 #ifdef TARGET_NR_atomic_barrier
13113 case TARGET_NR_atomic_barrier:
13114 /* Like the kernel implementation and the
13115 qemu arm barrier, no-op this? */
13116 return 0;
13117 #endif
13118
13119 #ifdef TARGET_NR_timer_create
13120 case TARGET_NR_timer_create:
13121 {
13122 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
13123
13124 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
13125
13126 int clkid = arg1;
13127 int timer_index = next_free_host_timer();
13128
13129 if (timer_index < 0) {
13130 ret = -TARGET_EAGAIN;
13131 } else {
13132 timer_t *phtimer = g_posix_timers + timer_index;
13133
13134 if (arg2) {
13135 phost_sevp = &host_sevp;
13136 ret = target_to_host_sigevent(phost_sevp, arg2);
13137 if (ret != 0) {
13138 free_host_timer_slot(timer_index);
13139 return ret;
13140 }
13141 }
13142
13143 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
13144 if (ret) {
13145 free_host_timer_slot(timer_index);
13146 } else {
13147 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
13148 timer_delete(*phtimer);
13149 free_host_timer_slot(timer_index);
13150 return -TARGET_EFAULT;
13151 }
13152 }
13153 }
13154 return ret;
13155 }
13156 #endif
13157
13158 #ifdef TARGET_NR_timer_settime
13159 case TARGET_NR_timer_settime:
13160 {
13161 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
13162 * struct itimerspec * old_value */
13163 target_timer_t timerid = get_timer_id(arg1);
13164
13165 if (timerid < 0) {
13166 ret = timerid;
13167 } else if (arg3 == 0) {
13168 ret = -TARGET_EINVAL;
13169 } else {
13170 timer_t htimer = g_posix_timers[timerid];
13171 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
13172
13173 if (target_to_host_itimerspec(&hspec_new, arg3)) {
13174 return -TARGET_EFAULT;
13175 }
13176 ret = get_errno(
13177 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
13178 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
13179 return -TARGET_EFAULT;
13180 }
13181 }
13182 return ret;
13183 }
13184 #endif
13185
13186 #ifdef TARGET_NR_timer_settime64
13187 case TARGET_NR_timer_settime64:
13188 {
13189 target_timer_t timerid = get_timer_id(arg1);
13190
13191 if (timerid < 0) {
13192 ret = timerid;
13193 } else if (arg3 == 0) {
13194 ret = -TARGET_EINVAL;
13195 } else {
13196 timer_t htimer = g_posix_timers[timerid];
13197 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
13198
13199 if (target_to_host_itimerspec64(&hspec_new, arg3)) {
13200 return -TARGET_EFAULT;
13201 }
13202 ret = get_errno(
13203 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
13204 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) {
13205 return -TARGET_EFAULT;
13206 }
13207 }
13208 return ret;
13209 }
13210 #endif
13211
13212 #ifdef TARGET_NR_timer_gettime
13213 case TARGET_NR_timer_gettime:
13214 {
13215 /* args: timer_t timerid, struct itimerspec *curr_value */
13216 target_timer_t timerid = get_timer_id(arg1);
13217
13218 if (timerid < 0) {
13219 ret = timerid;
13220 } else if (!arg2) {
13221 ret = -TARGET_EFAULT;
13222 } else {
13223 timer_t htimer = g_posix_timers[timerid];
13224 struct itimerspec hspec;
13225 ret = get_errno(timer_gettime(htimer, &hspec));
13226
13227 if (host_to_target_itimerspec(arg2, &hspec)) {
13228 ret = -TARGET_EFAULT;
13229 }
13230 }
13231 return ret;
13232 }
13233 #endif
13234
13235 #ifdef TARGET_NR_timer_gettime64
13236 case TARGET_NR_timer_gettime64:
13237 {
13238 /* args: timer_t timerid, struct itimerspec64 *curr_value */
13239 target_timer_t timerid = get_timer_id(arg1);
13240
13241 if (timerid < 0) {
13242 ret = timerid;
13243 } else if (!arg2) {
13244 ret = -TARGET_EFAULT;
13245 } else {
13246 timer_t htimer = g_posix_timers[timerid];
13247 struct itimerspec hspec;
13248 ret = get_errno(timer_gettime(htimer, &hspec));
13249
13250 if (host_to_target_itimerspec64(arg2, &hspec)) {
13251 ret = -TARGET_EFAULT;
13252 }
13253 }
13254 return ret;
13255 }
13256 #endif
13257
13258 #ifdef TARGET_NR_timer_getoverrun
13259 case TARGET_NR_timer_getoverrun:
13260 {
13261 /* args: timer_t timerid */
13262 target_timer_t timerid = get_timer_id(arg1);
13263
13264 if (timerid < 0) {
13265 ret = timerid;
13266 } else {
13267 timer_t htimer = g_posix_timers[timerid];
13268 ret = get_errno(timer_getoverrun(htimer));
13269 }
13270 return ret;
13271 }
13272 #endif
13273
13274 #ifdef TARGET_NR_timer_delete
13275 case TARGET_NR_timer_delete:
13276 {
13277 /* args: timer_t timerid */
13278 target_timer_t timerid = get_timer_id(arg1);
13279
13280 if (timerid < 0) {
13281 ret = timerid;
13282 } else {
13283 timer_t htimer = g_posix_timers[timerid];
13284 ret = get_errno(timer_delete(htimer));
13285 free_host_timer_slot(timerid);
13286 }
13287 return ret;
13288 }
13289 #endif
13290
13291 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
13292 case TARGET_NR_timerfd_create:
13293 ret = get_errno(timerfd_create(arg1,
13294 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
13295 if (ret >= 0) {
13296 fd_trans_register(ret, &target_timerfd_trans);
13297 }
13298 return ret;
13299 #endif
13300
13301 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
13302 case TARGET_NR_timerfd_gettime:
13303 {
13304 struct itimerspec its_curr;
13305
13306 ret = get_errno(timerfd_gettime(arg1, &its_curr));
13307
13308 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
13309 return -TARGET_EFAULT;
13310 }
13311 }
13312 return ret;
13313 #endif
13314
13315 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD)
13316 case TARGET_NR_timerfd_gettime64:
13317 {
13318 struct itimerspec its_curr;
13319
13320 ret = get_errno(timerfd_gettime(arg1, &its_curr));
13321
13322 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) {
13323 return -TARGET_EFAULT;
13324 }
13325 }
13326 return ret;
13327 #endif
13328
13329 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
13330 case TARGET_NR_timerfd_settime:
13331 {
13332 struct itimerspec its_new, its_old, *p_new;
13333
13334 if (arg3) {
13335 if (target_to_host_itimerspec(&its_new, arg3)) {
13336 return -TARGET_EFAULT;
13337 }
13338 p_new = &its_new;
13339 } else {
13340 p_new = NULL;
13341 }
13342
13343 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
13344
13345 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
13346 return -TARGET_EFAULT;
13347 }
13348 }
13349 return ret;
13350 #endif
13351
13352 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)
13353 case TARGET_NR_timerfd_settime64:
13354 {
13355 struct itimerspec its_new, its_old, *p_new;
13356
13357 if (arg3) {
13358 if (target_to_host_itimerspec64(&its_new, arg3)) {
13359 return -TARGET_EFAULT;
13360 }
13361 p_new = &its_new;
13362 } else {
13363 p_new = NULL;
13364 }
13365
13366 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
13367
13368 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) {
13369 return -TARGET_EFAULT;
13370 }
13371 }
13372 return ret;
13373 #endif
13374
13375 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
13376 case TARGET_NR_ioprio_get:
13377 return get_errno(ioprio_get(arg1, arg2));
13378 #endif
13379
13380 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
13381 case TARGET_NR_ioprio_set:
13382 return get_errno(ioprio_set(arg1, arg2, arg3));
13383 #endif
13384
13385 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
13386 case TARGET_NR_setns:
13387 return get_errno(setns(arg1, arg2));
13388 #endif
13389 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
13390 case TARGET_NR_unshare:
13391 return get_errno(unshare(arg1));
13392 #endif
13393 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
13394 case TARGET_NR_kcmp:
13395 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
13396 #endif
13397 #ifdef TARGET_NR_swapcontext
13398 case TARGET_NR_swapcontext:
13399 /* PowerPC specific. */
13400 return do_swapcontext(cpu_env, arg1, arg2, arg3);
13401 #endif
13402 #ifdef TARGET_NR_memfd_create
13403 case TARGET_NR_memfd_create:
13404 p = lock_user_string(arg1);
13405 if (!p) {
13406 return -TARGET_EFAULT;
13407 }
13408 ret = get_errno(memfd_create(p, arg2));
13409 fd_trans_unregister(ret);
13410 unlock_user(p, arg1, 0);
13411 return ret;
13412 #endif
13413 #if defined TARGET_NR_membarrier && defined __NR_membarrier
13414 case TARGET_NR_membarrier:
13415 return get_errno(membarrier(arg1, arg2));
13416 #endif
13417
13418 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
13419 case TARGET_NR_copy_file_range:
13420 {
13421 loff_t inoff, outoff;
13422 loff_t *pinoff = NULL, *poutoff = NULL;
13423
13424 if (arg2) {
13425 if (get_user_u64(inoff, arg2)) {
13426 return -TARGET_EFAULT;
13427 }
13428 pinoff = &inoff;
13429 }
13430 if (arg4) {
13431 if (get_user_u64(outoff, arg4)) {
13432 return -TARGET_EFAULT;
13433 }
13434 poutoff = &outoff;
13435 }
13436 /* Do not sign-extend the count parameter. */
13437 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff,
13438 (abi_ulong)arg5, arg6));
13439 if (!is_error(ret) && ret > 0) {
13440 if (arg2) {
13441 if (put_user_u64(inoff, arg2)) {
13442 return -TARGET_EFAULT;
13443 }
13444 }
13445 if (arg4) {
13446 if (put_user_u64(outoff, arg4)) {
13447 return -TARGET_EFAULT;
13448 }
13449 }
13450 }
13451 }
13452 return ret;
13453 #endif
13454
13455 #if defined(TARGET_NR_pivot_root)
13456 case TARGET_NR_pivot_root:
13457 {
13458 void *p2;
13459 p = lock_user_string(arg1); /* new_root */
13460 p2 = lock_user_string(arg2); /* put_old */
13461 if (!p || !p2) {
13462 ret = -TARGET_EFAULT;
13463 } else {
13464 ret = get_errno(pivot_root(p, p2));
13465 }
13466 unlock_user(p2, arg2, 0);
13467 unlock_user(p, arg1, 0);
13468 }
13469 return ret;
13470 #endif
13471
13472 default:
13473 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
13474 return -TARGET_ENOSYS;
13475 }
13476 return ret;
13477 }
13478
13479 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1,
13480 abi_long arg2, abi_long arg3, abi_long arg4,
13481 abi_long arg5, abi_long arg6, abi_long arg7,
13482 abi_long arg8)
13483 {
13484 CPUState *cpu = env_cpu(cpu_env);
13485 abi_long ret;
13486
13487 #ifdef DEBUG_ERESTARTSYS
13488 /* Debug-only code for exercising the syscall-restart code paths
13489 * in the per-architecture cpu main loops: restart every syscall
13490 * the guest makes once before letting it through.
13491 */
13492 {
13493 static bool flag;
13494 flag = !flag;
13495 if (flag) {
13496 return -QEMU_ERESTARTSYS;
13497 }
13498 }
13499 #endif
13500
13501 record_syscall_start(cpu, num, arg1,
13502 arg2, arg3, arg4, arg5, arg6, arg7, arg8);
13503
13504 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13505 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6);
13506 }
13507
13508 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
13509 arg5, arg6, arg7, arg8);
13510
13511 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13512 print_syscall_ret(cpu_env, num, ret, arg1, arg2,
13513 arg3, arg4, arg5, arg6);
13514 }
13515
13516 record_syscall_return(cpu, num, ret);
13517 return ret;
13518 }
AR7 emulation for QEMU