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virtio-net: Set mac address to hardware if the peer is vdpa
[qemu/ar7.git] / linux-user / syscall.c
blob3160a9ba06bdada9793fd9450c630cf7308e57a0
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 <elf.h>
26 #include <endian.h>
27 #include <grp.h>
28 #include <sys/ipc.h>
29 #include <sys/msg.h>
30 #include <sys/wait.h>
31 #include <sys/mount.h>
32 #include <sys/file.h>
33 #include <sys/fsuid.h>
34 #include <sys/personality.h>
35 #include <sys/prctl.h>
36 #include <sys/resource.h>
37 #include <sys/swap.h>
38 #include <linux/capability.h>
39 #include <sched.h>
40 #include <sys/timex.h>
41 #include <sys/socket.h>
42 #include <linux/sockios.h>
43 #include <sys/un.h>
44 #include <sys/uio.h>
45 #include <poll.h>
46 #include <sys/times.h>
47 #include <sys/shm.h>
48 #include <sys/sem.h>
49 #include <sys/statfs.h>
50 #include <utime.h>
51 #include <sys/sysinfo.h>
52 #include <sys/signalfd.h>
53 //#include <sys/user.h>
54 #include <netinet/ip.h>
55 #include <netinet/tcp.h>
56 #include <linux/wireless.h>
57 #include <linux/icmp.h>
58 #include <linux/icmpv6.h>
59 #include <linux/errqueue.h>
60 #include <linux/random.h>
61 #ifdef CONFIG_TIMERFD
62 #include <sys/timerfd.h>
63 #endif
64 #ifdef CONFIG_EVENTFD
65 #include <sys/eventfd.h>
66 #endif
67 #ifdef CONFIG_EPOLL
68 #include <sys/epoll.h>
69 #endif
70 #ifdef CONFIG_ATTR
71 #include "qemu/xattr.h"
72 #endif
73 #ifdef CONFIG_SENDFILE
74 #include <sys/sendfile.h>
75 #endif
76 #ifdef CONFIG_KCOV
77 #include <sys/kcov.h>
78 #endif
79
80 #define termios host_termios
81 #define winsize host_winsize
82 #define termio host_termio
83 #define sgttyb host_sgttyb /* same as target */
84 #define tchars host_tchars /* same as target */
85 #define ltchars host_ltchars /* same as target */
86
87 #include <linux/termios.h>
88 #include <linux/unistd.h>
89 #include <linux/cdrom.h>
90 #include <linux/hdreg.h>
91 #include <linux/soundcard.h>
92 #include <linux/kd.h>
93 #include <linux/mtio.h>
94 #include <linux/fs.h>
95 #include <linux/fd.h>
96 #if defined(CONFIG_FIEMAP)
97 #include <linux/fiemap.h>
98 #endif
99 #include <linux/fb.h>
100 #if defined(CONFIG_USBFS)
101 #include <linux/usbdevice_fs.h>
102 #include <linux/usb/ch9.h>
103 #endif
104 #include <linux/vt.h>
105 #include <linux/dm-ioctl.h>
106 #include <linux/reboot.h>
107 #include <linux/route.h>
108 #include <linux/filter.h>
109 #include <linux/blkpg.h>
110 #include <netpacket/packet.h>
111 #include <linux/netlink.h>
112 #include <linux/if_alg.h>
113 #include <linux/rtc.h>
114 #include <sound/asound.h>
115 #ifdef CONFIG_BTRFS
116 #include <linux/btrfs.h>
117 #endif
118 #ifdef HAVE_DRM_H
119 #include <libdrm/drm.h>
120 #include <libdrm/i915_drm.h>
121 #endif
122 #include "linux_loop.h"
123 #include "uname.h"
124
125 #include "qemu.h"
126 #include "qemu/guest-random.h"
127 #include "qemu/selfmap.h"
128 #include "user/syscall-trace.h"
129 #include "qapi/error.h"
130 #include "fd-trans.h"
131 #include "tcg/tcg.h"
132
133 #ifndef CLONE_IO
134 #define CLONE_IO 0x80000000 /* Clone io context */
135 #endif
136
137 /* We can't directly call the host clone syscall, because this will
138 * badly confuse libc (breaking mutexes, for example). So we must
139 * divide clone flags into:
140 * * flag combinations that look like pthread_create()
141 * * flag combinations that look like fork()
142 * * flags we can implement within QEMU itself
143 * * flags we can't support and will return an error for
144 */
145 /* For thread creation, all these flags must be present; for
146 * fork, none must be present.
147 */
148 #define CLONE_THREAD_FLAGS \
149 (CLONE_VM | CLONE_FS | CLONE_FILES | \
150 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
151
152 /* These flags are ignored:
153 * CLONE_DETACHED is now ignored by the kernel;
154 * CLONE_IO is just an optimisation hint to the I/O scheduler
155 */
156 #define CLONE_IGNORED_FLAGS \
157 (CLONE_DETACHED | CLONE_IO)
158
159 /* Flags for fork which we can implement within QEMU itself */
160 #define CLONE_OPTIONAL_FORK_FLAGS \
161 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
162 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
163
164 /* Flags for thread creation which we can implement within QEMU itself */
165 #define CLONE_OPTIONAL_THREAD_FLAGS \
166 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
167 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
168
169 #define CLONE_INVALID_FORK_FLAGS \
170 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
171
172 #define CLONE_INVALID_THREAD_FLAGS \
173 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
174 CLONE_IGNORED_FLAGS))
175
176 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
177 * have almost all been allocated. We cannot support any of
178 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
179 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
180 * The checks against the invalid thread masks above will catch these.
181 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
182 */
183
184 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
185 * once. This exercises the codepaths for restart.
186 */
187 //#define DEBUG_ERESTARTSYS
188
189 //#include <linux/msdos_fs.h>
190 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
191 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
192
193 #undef _syscall0
194 #undef _syscall1
195 #undef _syscall2
196 #undef _syscall3
197 #undef _syscall4
198 #undef _syscall5
199 #undef _syscall6
200
201 #define _syscall0(type,name) \
202 static type name (void) \
203 { \
204 return syscall(__NR_##name); \
205 }
206
207 #define _syscall1(type,name,type1,arg1) \
208 static type name (type1 arg1) \
209 { \
210 return syscall(__NR_##name, arg1); \
211 }
212
213 #define _syscall2(type,name,type1,arg1,type2,arg2) \
214 static type name (type1 arg1,type2 arg2) \
215 { \
216 return syscall(__NR_##name, arg1, arg2); \
217 }
218
219 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
220 static type name (type1 arg1,type2 arg2,type3 arg3) \
221 { \
222 return syscall(__NR_##name, arg1, arg2, arg3); \
223 }
224
225 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
226 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
227 { \
228 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
229 }
230
231 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
232 type5,arg5) \
233 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
234 { \
235 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
236 }
237
238
239 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
240 type5,arg5,type6,arg6) \
241 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
242 type6 arg6) \
243 { \
244 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
245 }
246
247
248 #define __NR_sys_uname __NR_uname
249 #define __NR_sys_getcwd1 __NR_getcwd
250 #define __NR_sys_getdents __NR_getdents
251 #define __NR_sys_getdents64 __NR_getdents64
252 #define __NR_sys_getpriority __NR_getpriority
253 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
254 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
255 #define __NR_sys_syslog __NR_syslog
256 #if defined(__NR_futex)
257 # define __NR_sys_futex __NR_futex
258 #endif
259 #if defined(__NR_futex_time64)
260 # define __NR_sys_futex_time64 __NR_futex_time64
261 #endif
262 #define __NR_sys_inotify_init __NR_inotify_init
263 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
264 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
265 #define __NR_sys_statx __NR_statx
266
267 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
268 #define __NR__llseek __NR_lseek
269 #endif
270
271 /* Newer kernel ports have llseek() instead of _llseek() */
272 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
273 #define TARGET_NR__llseek TARGET_NR_llseek
274 #endif
275
276 #define __NR_sys_gettid __NR_gettid
277 _syscall0(int, sys_gettid)
278
279 /* For the 64-bit guest on 32-bit host case we must emulate
280 * getdents using getdents64, because otherwise the host
281 * might hand us back more dirent records than we can fit
282 * into the guest buffer after structure format conversion.
283 * Otherwise we emulate getdents with getdents if the host has it.
284 */
285 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
286 #define EMULATE_GETDENTS_WITH_GETDENTS
287 #endif
288
289 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
290 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
291 #endif
292 #if (defined(TARGET_NR_getdents) && \
293 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
294 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
295 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
296 #endif
297 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
298 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
299 loff_t *, res, uint, wh);
300 #endif
301 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
302 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
303 siginfo_t *, uinfo)
304 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
305 #ifdef __NR_exit_group
306 _syscall1(int,exit_group,int,error_code)
307 #endif
308 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
309 _syscall1(int,set_tid_address,int *,tidptr)
310 #endif
311 #if defined(__NR_futex)
312 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
313 const struct timespec *,timeout,int *,uaddr2,int,val3)
314 #endif
315 #if defined(__NR_futex_time64)
316 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
317 const struct timespec *,timeout,int *,uaddr2,int,val3)
318 #endif
319 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
320 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
321 unsigned long *, user_mask_ptr);
322 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
323 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
324 unsigned long *, user_mask_ptr);
325 #define __NR_sys_getcpu __NR_getcpu
326 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
327 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
328 void *, arg);
329 _syscall2(int, capget, struct __user_cap_header_struct *, header,
330 struct __user_cap_data_struct *, data);
331 _syscall2(int, capset, struct __user_cap_header_struct *, header,
332 struct __user_cap_data_struct *, data);
333 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
334 _syscall2(int, ioprio_get, int, which, int, who)
335 #endif
336 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
337 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
338 #endif
339 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
340 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
341 #endif
342
343 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
344 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
345 unsigned long, idx1, unsigned long, idx2)
346 #endif
347
348 /*
349 * It is assumed that struct statx is architecture independent.
350 */
351 #if defined(TARGET_NR_statx) && defined(__NR_statx)
352 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
353 unsigned int, mask, struct target_statx *, statxbuf)
354 #endif
355 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
356 _syscall2(int, membarrier, int, cmd, int, flags)
357 #endif
358
359 static bitmask_transtbl fcntl_flags_tbl[] = {
360 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
361 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
362 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
363 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
364 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
365 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
366 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
367 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
368 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
369 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
370 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
371 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
372 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
373 #if defined(O_DIRECT)
374 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
375 #endif
376 #if defined(O_NOATIME)
377 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
378 #endif
379 #if defined(O_CLOEXEC)
380 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
381 #endif
382 #if defined(O_PATH)
383 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
384 #endif
385 #if defined(O_TMPFILE)
386 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
387 #endif
388 /* Don't terminate the list prematurely on 64-bit host+guest. */
389 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
390 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
391 #endif
392 { 0, 0, 0, 0 }
393 };
394
395 _syscall2(int, sys_getcwd1, char *, buf, size_t, size)
396
397 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64)
398 #if defined(__NR_utimensat)
399 #define __NR_sys_utimensat __NR_utimensat
400 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
401 const struct timespec *,tsp,int,flags)
402 #else
403 static int sys_utimensat(int dirfd, const char *pathname,
404 const struct timespec times[2], int flags)
405 {
406 errno = ENOSYS;
407 return -1;
408 }
409 #endif
410 #endif /* TARGET_NR_utimensat */
411
412 #ifdef TARGET_NR_renameat2
413 #if defined(__NR_renameat2)
414 #define __NR_sys_renameat2 __NR_renameat2
415 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
416 const char *, new, unsigned int, flags)
417 #else
418 static int sys_renameat2(int oldfd, const char *old,
419 int newfd, const char *new, int flags)
420 {
421 if (flags == 0) {
422 return renameat(oldfd, old, newfd, new);
423 }
424 errno = ENOSYS;
425 return -1;
426 }
427 #endif
428 #endif /* TARGET_NR_renameat2 */
429
430 #ifdef CONFIG_INOTIFY
431 #include <sys/inotify.h>
432
433 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
434 static int sys_inotify_init(void)
435 {
436 return (inotify_init());
437 }
438 #endif
439 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
440 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
441 {
442 return (inotify_add_watch(fd, pathname, mask));
443 }
444 #endif
445 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
446 static int sys_inotify_rm_watch(int fd, int32_t wd)
447 {
448 return (inotify_rm_watch(fd, wd));
449 }
450 #endif
451 #ifdef CONFIG_INOTIFY1
452 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
453 static int sys_inotify_init1(int flags)
454 {
455 return (inotify_init1(flags));
456 }
457 #endif
458 #endif
459 #else
460 /* Userspace can usually survive runtime without inotify */
461 #undef TARGET_NR_inotify_init
462 #undef TARGET_NR_inotify_init1
463 #undef TARGET_NR_inotify_add_watch
464 #undef TARGET_NR_inotify_rm_watch
465 #endif /* CONFIG_INOTIFY */
466
467 #if defined(TARGET_NR_prlimit64)
468 #ifndef __NR_prlimit64
469 # define __NR_prlimit64 -1
470 #endif
471 #define __NR_sys_prlimit64 __NR_prlimit64
472 /* The glibc rlimit structure may not be that used by the underlying syscall */
473 struct host_rlimit64 {
474 uint64_t rlim_cur;
475 uint64_t rlim_max;
476 };
477 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
478 const struct host_rlimit64 *, new_limit,
479 struct host_rlimit64 *, old_limit)
480 #endif
481
482
483 #if defined(TARGET_NR_timer_create)
484 /* Maximum of 32 active POSIX timers allowed at any one time. */
485 static timer_t g_posix_timers[32] = { 0, } ;
486
487 static inline int next_free_host_timer(void)
488 {
489 int k ;
490 /* FIXME: Does finding the next free slot require a lock? */
491 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
492 if (g_posix_timers[k] == 0) {
493 g_posix_timers[k] = (timer_t) 1;
494 return k;
495 }
496 }
497 return -1;
498 }
499 #endif
500
501 #define ERRNO_TABLE_SIZE 1200
502
503 /* target_to_host_errno_table[] is initialized from
504 * host_to_target_errno_table[] in syscall_init(). */
505 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
506 };
507
508 /*
509 * This list is the union of errno values overridden in asm-<arch>/errno.h
510 * minus the errnos that are not actually generic to all archs.
511 */
512 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
513 [EAGAIN] = TARGET_EAGAIN,
514 [EIDRM] = TARGET_EIDRM,
515 [ECHRNG] = TARGET_ECHRNG,
516 [EL2NSYNC] = TARGET_EL2NSYNC,
517 [EL3HLT] = TARGET_EL3HLT,
518 [EL3RST] = TARGET_EL3RST,
519 [ELNRNG] = TARGET_ELNRNG,
520 [EUNATCH] = TARGET_EUNATCH,
521 [ENOCSI] = TARGET_ENOCSI,
522 [EL2HLT] = TARGET_EL2HLT,
523 [EDEADLK] = TARGET_EDEADLK,
524 [ENOLCK] = TARGET_ENOLCK,
525 [EBADE] = TARGET_EBADE,
526 [EBADR] = TARGET_EBADR,
527 [EXFULL] = TARGET_EXFULL,
528 [ENOANO] = TARGET_ENOANO,
529 [EBADRQC] = TARGET_EBADRQC,
530 [EBADSLT] = TARGET_EBADSLT,
531 [EBFONT] = TARGET_EBFONT,
532 [ENOSTR] = TARGET_ENOSTR,
533 [ENODATA] = TARGET_ENODATA,
534 [ETIME] = TARGET_ETIME,
535 [ENOSR] = TARGET_ENOSR,
536 [ENONET] = TARGET_ENONET,
537 [ENOPKG] = TARGET_ENOPKG,
538 [EREMOTE] = TARGET_EREMOTE,
539 [ENOLINK] = TARGET_ENOLINK,
540 [EADV] = TARGET_EADV,
541 [ESRMNT] = TARGET_ESRMNT,
542 [ECOMM] = TARGET_ECOMM,
543 [EPROTO] = TARGET_EPROTO,
544 [EDOTDOT] = TARGET_EDOTDOT,
545 [EMULTIHOP] = TARGET_EMULTIHOP,
546 [EBADMSG] = TARGET_EBADMSG,
547 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
548 [EOVERFLOW] = TARGET_EOVERFLOW,
549 [ENOTUNIQ] = TARGET_ENOTUNIQ,
550 [EBADFD] = TARGET_EBADFD,
551 [EREMCHG] = TARGET_EREMCHG,
552 [ELIBACC] = TARGET_ELIBACC,
553 [ELIBBAD] = TARGET_ELIBBAD,
554 [ELIBSCN] = TARGET_ELIBSCN,
555 [ELIBMAX] = TARGET_ELIBMAX,
556 [ELIBEXEC] = TARGET_ELIBEXEC,
557 [EILSEQ] = TARGET_EILSEQ,
558 [ENOSYS] = TARGET_ENOSYS,
559 [ELOOP] = TARGET_ELOOP,
560 [ERESTART] = TARGET_ERESTART,
561 [ESTRPIPE] = TARGET_ESTRPIPE,
562 [ENOTEMPTY] = TARGET_ENOTEMPTY,
563 [EUSERS] = TARGET_EUSERS,
564 [ENOTSOCK] = TARGET_ENOTSOCK,
565 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
566 [EMSGSIZE] = TARGET_EMSGSIZE,
567 [EPROTOTYPE] = TARGET_EPROTOTYPE,
568 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
569 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
570 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
571 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
572 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
573 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
574 [EADDRINUSE] = TARGET_EADDRINUSE,
575 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
576 [ENETDOWN] = TARGET_ENETDOWN,
577 [ENETUNREACH] = TARGET_ENETUNREACH,
578 [ENETRESET] = TARGET_ENETRESET,
579 [ECONNABORTED] = TARGET_ECONNABORTED,
580 [ECONNRESET] = TARGET_ECONNRESET,
581 [ENOBUFS] = TARGET_ENOBUFS,
582 [EISCONN] = TARGET_EISCONN,
583 [ENOTCONN] = TARGET_ENOTCONN,
584 [EUCLEAN] = TARGET_EUCLEAN,
585 [ENOTNAM] = TARGET_ENOTNAM,
586 [ENAVAIL] = TARGET_ENAVAIL,
587 [EISNAM] = TARGET_EISNAM,
588 [EREMOTEIO] = TARGET_EREMOTEIO,
589 [EDQUOT] = TARGET_EDQUOT,
590 [ESHUTDOWN] = TARGET_ESHUTDOWN,
591 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
592 [ETIMEDOUT] = TARGET_ETIMEDOUT,
593 [ECONNREFUSED] = TARGET_ECONNREFUSED,
594 [EHOSTDOWN] = TARGET_EHOSTDOWN,
595 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
596 [EALREADY] = TARGET_EALREADY,
597 [EINPROGRESS] = TARGET_EINPROGRESS,
598 [ESTALE] = TARGET_ESTALE,
599 [ECANCELED] = TARGET_ECANCELED,
600 [ENOMEDIUM] = TARGET_ENOMEDIUM,
601 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
602 #ifdef ENOKEY
603 [ENOKEY] = TARGET_ENOKEY,
604 #endif
605 #ifdef EKEYEXPIRED
606 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
607 #endif
608 #ifdef EKEYREVOKED
609 [EKEYREVOKED] = TARGET_EKEYREVOKED,
610 #endif
611 #ifdef EKEYREJECTED
612 [EKEYREJECTED] = TARGET_EKEYREJECTED,
613 #endif
614 #ifdef EOWNERDEAD
615 [EOWNERDEAD] = TARGET_EOWNERDEAD,
616 #endif
617 #ifdef ENOTRECOVERABLE
618 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
619 #endif
620 #ifdef ENOMSG
621 [ENOMSG] = TARGET_ENOMSG,
622 #endif
623 #ifdef ERKFILL
624 [ERFKILL] = TARGET_ERFKILL,
625 #endif
626 #ifdef EHWPOISON
627 [EHWPOISON] = TARGET_EHWPOISON,
628 #endif
629 };
630
631 static inline int host_to_target_errno(int err)
632 {
633 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
634 host_to_target_errno_table[err]) {
635 return host_to_target_errno_table[err];
636 }
637 return err;
638 }
639
640 static inline int target_to_host_errno(int err)
641 {
642 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
643 target_to_host_errno_table[err]) {
644 return target_to_host_errno_table[err];
645 }
646 return err;
647 }
648
649 static inline abi_long get_errno(abi_long ret)
650 {
651 if (ret == -1)
652 return -host_to_target_errno(errno);
653 else
654 return ret;
655 }
656
657 const char *target_strerror(int err)
658 {
659 if (err == TARGET_ERESTARTSYS) {
660 return "To be restarted";
661 }
662 if (err == TARGET_QEMU_ESIGRETURN) {
663 return "Successful exit from sigreturn";
664 }
665
666 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
667 return NULL;
668 }
669 return strerror(target_to_host_errno(err));
670 }
671
672 #define safe_syscall0(type, name) \
673 static type safe_##name(void) \
674 { \
675 return safe_syscall(__NR_##name); \
676 }
677
678 #define safe_syscall1(type, name, type1, arg1) \
679 static type safe_##name(type1 arg1) \
680 { \
681 return safe_syscall(__NR_##name, arg1); \
682 }
683
684 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
685 static type safe_##name(type1 arg1, type2 arg2) \
686 { \
687 return safe_syscall(__NR_##name, arg1, arg2); \
688 }
689
690 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
691 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
692 { \
693 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
694 }
695
696 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
697 type4, arg4) \
698 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
699 { \
700 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
701 }
702
703 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
704 type4, arg4, type5, arg5) \
705 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
706 type5 arg5) \
707 { \
708 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
709 }
710
711 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
712 type4, arg4, type5, arg5, type6, arg6) \
713 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
714 type5 arg5, type6 arg6) \
715 { \
716 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
717 }
718
719 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
720 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
721 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
722 int, flags, mode_t, mode)
723 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
724 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
725 struct rusage *, rusage)
726 #endif
727 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
728 int, options, struct rusage *, rusage)
729 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
730 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
731 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
732 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
733 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
734 #endif
735 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64)
736 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
737 struct timespec *, tsp, const sigset_t *, sigmask,
738 size_t, sigsetsize)
739 #endif
740 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
741 int, maxevents, int, timeout, const sigset_t *, sigmask,
742 size_t, sigsetsize)
743 #if defined(__NR_futex)
744 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
745 const struct timespec *,timeout,int *,uaddr2,int,val3)
746 #endif
747 #if defined(__NR_futex_time64)
748 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \
749 const struct timespec *,timeout,int *,uaddr2,int,val3)
750 #endif
751 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
752 safe_syscall2(int, kill, pid_t, pid, int, sig)
753 safe_syscall2(int, tkill, int, tid, int, sig)
754 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
755 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
756 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
757 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
758 unsigned long, pos_l, unsigned long, pos_h)
759 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
760 unsigned long, pos_l, unsigned long, pos_h)
761 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
762 socklen_t, addrlen)
763 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
764 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
765 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
766 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
767 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
768 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
769 safe_syscall2(int, flock, int, fd, int, operation)
770 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64)
771 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
772 const struct timespec *, uts, size_t, sigsetsize)
773 #endif
774 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
775 int, flags)
776 #if defined(TARGET_NR_nanosleep)
777 safe_syscall2(int, nanosleep, const struct timespec *, req,
778 struct timespec *, rem)
779 #endif
780 #if defined(TARGET_NR_clock_nanosleep) || \
781 defined(TARGET_NR_clock_nanosleep_time64)
782 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
783 const struct timespec *, req, struct timespec *, rem)
784 #endif
785 #ifdef __NR_ipc
786 #ifdef __s390x__
787 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third,
788 void *, ptr)
789 #else
790 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
791 void *, ptr, long, fifth)
792 #endif
793 #endif
794 #ifdef __NR_msgsnd
795 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
796 int, flags)
797 #endif
798 #ifdef __NR_msgrcv
799 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
800 long, msgtype, int, flags)
801 #endif
802 #ifdef __NR_semtimedop
803 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
804 unsigned, nsops, const struct timespec *, timeout)
805 #endif
806 #if defined(TARGET_NR_mq_timedsend) || \
807 defined(TARGET_NR_mq_timedsend_time64)
808 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
809 size_t, len, unsigned, prio, const struct timespec *, timeout)
810 #endif
811 #if defined(TARGET_NR_mq_timedreceive) || \
812 defined(TARGET_NR_mq_timedreceive_time64)
813 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
814 size_t, len, unsigned *, prio, const struct timespec *, timeout)
815 #endif
816 /* We do ioctl like this rather than via safe_syscall3 to preserve the
817 * "third argument might be integer or pointer or not present" behaviour of
818 * the libc function.
819 */
820 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
821 /* Similarly for fcntl. Note that callers must always:
822 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
823 * use the flock64 struct rather than unsuffixed flock
824 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
825 */
826 #ifdef __NR_fcntl64
827 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
828 #else
829 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
830 #endif
831
832 static inline int host_to_target_sock_type(int host_type)
833 {
834 int target_type;
835
836 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
837 case SOCK_DGRAM:
838 target_type = TARGET_SOCK_DGRAM;
839 break;
840 case SOCK_STREAM:
841 target_type = TARGET_SOCK_STREAM;
842 break;
843 default:
844 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
845 break;
846 }
847
848 #if defined(SOCK_CLOEXEC)
849 if (host_type & SOCK_CLOEXEC) {
850 target_type |= TARGET_SOCK_CLOEXEC;
851 }
852 #endif
853
854 #if defined(SOCK_NONBLOCK)
855 if (host_type & SOCK_NONBLOCK) {
856 target_type |= TARGET_SOCK_NONBLOCK;
857 }
858 #endif
859
860 return target_type;
861 }
862
863 static abi_ulong target_brk;
864 static abi_ulong target_original_brk;
865 static abi_ulong brk_page;
866
867 void target_set_brk(abi_ulong new_brk)
868 {
869 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
870 brk_page = HOST_PAGE_ALIGN(target_brk);
871 }
872
873 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
874 #define DEBUGF_BRK(message, args...)
875
876 /* do_brk() must return target values and target errnos. */
877 abi_long do_brk(abi_ulong new_brk)
878 {
879 abi_long mapped_addr;
880 abi_ulong new_alloc_size;
881
882 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
883
884 if (!new_brk) {
885 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
886 return target_brk;
887 }
888 if (new_brk < target_original_brk) {
889 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
890 target_brk);
891 return target_brk;
892 }
893
894 /* If the new brk is less than the highest page reserved to the
895 * target heap allocation, set it and we're almost done... */
896 if (new_brk <= brk_page) {
897 /* Heap contents are initialized to zero, as for anonymous
898 * mapped pages. */
899 if (new_brk > target_brk) {
900 memset(g2h(target_brk), 0, new_brk - target_brk);
901 }
902 target_brk = new_brk;
903 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
904 return target_brk;
905 }
906
907 /* We need to allocate more memory after the brk... Note that
908 * we don't use MAP_FIXED because that will map over the top of
909 * any existing mapping (like the one with the host libc or qemu
910 * itself); instead we treat "mapped but at wrong address" as
911 * a failure and unmap again.
912 */
913 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
914 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
915 PROT_READ|PROT_WRITE,
916 MAP_ANON|MAP_PRIVATE, 0, 0));
917
918 if (mapped_addr == brk_page) {
919 /* Heap contents are initialized to zero, as for anonymous
920 * mapped pages. Technically the new pages are already
921 * initialized to zero since they *are* anonymous mapped
922 * pages, however we have to take care with the contents that
923 * come from the remaining part of the previous page: it may
924 * contains garbage data due to a previous heap usage (grown
925 * then shrunken). */
926 memset(g2h(target_brk), 0, brk_page - target_brk);
927
928 target_brk = new_brk;
929 brk_page = HOST_PAGE_ALIGN(target_brk);
930 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
931 target_brk);
932 return target_brk;
933 } else if (mapped_addr != -1) {
934 /* Mapped but at wrong address, meaning there wasn't actually
935 * enough space for this brk.
936 */
937 target_munmap(mapped_addr, new_alloc_size);
938 mapped_addr = -1;
939 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
940 }
941 else {
942 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
943 }
944
945 #if defined(TARGET_ALPHA)
946 /* We (partially) emulate OSF/1 on Alpha, which requires we
947 return a proper errno, not an unchanged brk value. */
948 return -TARGET_ENOMEM;
949 #endif
950 /* For everything else, return the previous break. */
951 return target_brk;
952 }
953
954 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
955 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
956 static inline abi_long copy_from_user_fdset(fd_set *fds,
957 abi_ulong target_fds_addr,
958 int n)
959 {
960 int i, nw, j, k;
961 abi_ulong b, *target_fds;
962
963 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
964 if (!(target_fds = lock_user(VERIFY_READ,
965 target_fds_addr,
966 sizeof(abi_ulong) * nw,
967 1)))
968 return -TARGET_EFAULT;
969
970 FD_ZERO(fds);
971 k = 0;
972 for (i = 0; i < nw; i++) {
973 /* grab the abi_ulong */
974 __get_user(b, &target_fds[i]);
975 for (j = 0; j < TARGET_ABI_BITS; j++) {
976 /* check the bit inside the abi_ulong */
977 if ((b >> j) & 1)
978 FD_SET(k, fds);
979 k++;
980 }
981 }
982
983 unlock_user(target_fds, target_fds_addr, 0);
984
985 return 0;
986 }
987
988 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
989 abi_ulong target_fds_addr,
990 int n)
991 {
992 if (target_fds_addr) {
993 if (copy_from_user_fdset(fds, target_fds_addr, n))
994 return -TARGET_EFAULT;
995 *fds_ptr = fds;
996 } else {
997 *fds_ptr = NULL;
998 }
999 return 0;
1000 }
1001
1002 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
1003 const fd_set *fds,
1004 int n)
1005 {
1006 int i, nw, j, k;
1007 abi_long v;
1008 abi_ulong *target_fds;
1009
1010 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1011 if (!(target_fds = lock_user(VERIFY_WRITE,
1012 target_fds_addr,
1013 sizeof(abi_ulong) * nw,
1014 0)))
1015 return -TARGET_EFAULT;
1016
1017 k = 0;
1018 for (i = 0; i < nw; i++) {
1019 v = 0;
1020 for (j = 0; j < TARGET_ABI_BITS; j++) {
1021 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1022 k++;
1023 }
1024 __put_user(v, &target_fds[i]);
1025 }
1026
1027 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1028
1029 return 0;
1030 }
1031 #endif
1032
1033 #if defined(__alpha__)
1034 #define HOST_HZ 1024
1035 #else
1036 #define HOST_HZ 100
1037 #endif
1038
1039 static inline abi_long host_to_target_clock_t(long ticks)
1040 {
1041 #if HOST_HZ == TARGET_HZ
1042 return ticks;
1043 #else
1044 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1045 #endif
1046 }
1047
1048 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1049 const struct rusage *rusage)
1050 {
1051 struct target_rusage *target_rusage;
1052
1053 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1054 return -TARGET_EFAULT;
1055 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1056 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1057 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1058 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1059 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1060 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1061 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1062 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1063 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1064 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1065 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1066 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1067 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1068 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1069 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1070 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1071 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1072 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1073 unlock_user_struct(target_rusage, target_addr, 1);
1074
1075 return 0;
1076 }
1077
1078 #ifdef TARGET_NR_setrlimit
1079 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1080 {
1081 abi_ulong target_rlim_swap;
1082 rlim_t result;
1083
1084 target_rlim_swap = tswapal(target_rlim);
1085 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1086 return RLIM_INFINITY;
1087
1088 result = target_rlim_swap;
1089 if (target_rlim_swap != (rlim_t)result)
1090 return RLIM_INFINITY;
1091
1092 return result;
1093 }
1094 #endif
1095
1096 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
1097 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1098 {
1099 abi_ulong target_rlim_swap;
1100 abi_ulong result;
1101
1102 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1103 target_rlim_swap = TARGET_RLIM_INFINITY;
1104 else
1105 target_rlim_swap = rlim;
1106 result = tswapal(target_rlim_swap);
1107
1108 return result;
1109 }
1110 #endif
1111
1112 static inline int target_to_host_resource(int code)
1113 {
1114 switch (code) {
1115 case TARGET_RLIMIT_AS:
1116 return RLIMIT_AS;
1117 case TARGET_RLIMIT_CORE:
1118 return RLIMIT_CORE;
1119 case TARGET_RLIMIT_CPU:
1120 return RLIMIT_CPU;
1121 case TARGET_RLIMIT_DATA:
1122 return RLIMIT_DATA;
1123 case TARGET_RLIMIT_FSIZE:
1124 return RLIMIT_FSIZE;
1125 case TARGET_RLIMIT_LOCKS:
1126 return RLIMIT_LOCKS;
1127 case TARGET_RLIMIT_MEMLOCK:
1128 return RLIMIT_MEMLOCK;
1129 case TARGET_RLIMIT_MSGQUEUE:
1130 return RLIMIT_MSGQUEUE;
1131 case TARGET_RLIMIT_NICE:
1132 return RLIMIT_NICE;
1133 case TARGET_RLIMIT_NOFILE:
1134 return RLIMIT_NOFILE;
1135 case TARGET_RLIMIT_NPROC:
1136 return RLIMIT_NPROC;
1137 case TARGET_RLIMIT_RSS:
1138 return RLIMIT_RSS;
1139 case TARGET_RLIMIT_RTPRIO:
1140 return RLIMIT_RTPRIO;
1141 case TARGET_RLIMIT_SIGPENDING:
1142 return RLIMIT_SIGPENDING;
1143 case TARGET_RLIMIT_STACK:
1144 return RLIMIT_STACK;
1145 default:
1146 return code;
1147 }
1148 }
1149
1150 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1151 abi_ulong target_tv_addr)
1152 {
1153 struct target_timeval *target_tv;
1154
1155 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1156 return -TARGET_EFAULT;
1157 }
1158
1159 __get_user(tv->tv_sec, &target_tv->tv_sec);
1160 __get_user(tv->tv_usec, &target_tv->tv_usec);
1161
1162 unlock_user_struct(target_tv, target_tv_addr, 0);
1163
1164 return 0;
1165 }
1166
1167 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1168 const struct timeval *tv)
1169 {
1170 struct target_timeval *target_tv;
1171
1172 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1173 return -TARGET_EFAULT;
1174 }
1175
1176 __put_user(tv->tv_sec, &target_tv->tv_sec);
1177 __put_user(tv->tv_usec, &target_tv->tv_usec);
1178
1179 unlock_user_struct(target_tv, target_tv_addr, 1);
1180
1181 return 0;
1182 }
1183
1184 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
1185 static inline abi_long copy_from_user_timeval64(struct timeval *tv,
1186 abi_ulong target_tv_addr)
1187 {
1188 struct target__kernel_sock_timeval *target_tv;
1189
1190 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1191 return -TARGET_EFAULT;
1192 }
1193
1194 __get_user(tv->tv_sec, &target_tv->tv_sec);
1195 __get_user(tv->tv_usec, &target_tv->tv_usec);
1196
1197 unlock_user_struct(target_tv, target_tv_addr, 0);
1198
1199 return 0;
1200 }
1201 #endif
1202
1203 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1204 const struct timeval *tv)
1205 {
1206 struct target__kernel_sock_timeval *target_tv;
1207
1208 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1209 return -TARGET_EFAULT;
1210 }
1211
1212 __put_user(tv->tv_sec, &target_tv->tv_sec);
1213 __put_user(tv->tv_usec, &target_tv->tv_usec);
1214
1215 unlock_user_struct(target_tv, target_tv_addr, 1);
1216
1217 return 0;
1218 }
1219
1220 #if defined(TARGET_NR_futex) || \
1221 defined(TARGET_NR_rt_sigtimedwait) || \
1222 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
1223 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
1224 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
1225 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \
1226 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \
1227 defined(TARGET_NR_timer_settime) || \
1228 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
1229 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1230 abi_ulong target_addr)
1231 {
1232 struct target_timespec *target_ts;
1233
1234 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1235 return -TARGET_EFAULT;
1236 }
1237 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1238 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1239 unlock_user_struct(target_ts, target_addr, 0);
1240 return 0;
1241 }
1242 #endif
1243
1244 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \
1245 defined(TARGET_NR_timer_settime64) || \
1246 defined(TARGET_NR_mq_timedsend_time64) || \
1247 defined(TARGET_NR_mq_timedreceive_time64) || \
1248 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \
1249 defined(TARGET_NR_clock_nanosleep_time64) || \
1250 defined(TARGET_NR_rt_sigtimedwait_time64) || \
1251 defined(TARGET_NR_utimensat) || \
1252 defined(TARGET_NR_utimensat_time64) || \
1253 defined(TARGET_NR_semtimedop_time64) || \
1254 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64)
1255 static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
1256 abi_ulong target_addr)
1257 {
1258 struct target__kernel_timespec *target_ts;
1259
1260 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1261 return -TARGET_EFAULT;
1262 }
1263 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1264 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1265 /* in 32bit mode, this drops the padding */
1266 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec;
1267 unlock_user_struct(target_ts, target_addr, 0);
1268 return 0;
1269 }
1270 #endif
1271
1272 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1273 struct timespec *host_ts)
1274 {
1275 struct target_timespec *target_ts;
1276
1277 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1278 return -TARGET_EFAULT;
1279 }
1280 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1281 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1282 unlock_user_struct(target_ts, target_addr, 1);
1283 return 0;
1284 }
1285
1286 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1287 struct timespec *host_ts)
1288 {
1289 struct target__kernel_timespec *target_ts;
1290
1291 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1292 return -TARGET_EFAULT;
1293 }
1294 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1295 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1296 unlock_user_struct(target_ts, target_addr, 1);
1297 return 0;
1298 }
1299
1300 #if defined(TARGET_NR_gettimeofday)
1301 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
1302 struct timezone *tz)
1303 {
1304 struct target_timezone *target_tz;
1305
1306 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
1307 return -TARGET_EFAULT;
1308 }
1309
1310 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1311 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1312
1313 unlock_user_struct(target_tz, target_tz_addr, 1);
1314
1315 return 0;
1316 }
1317 #endif
1318
1319 #if defined(TARGET_NR_settimeofday)
1320 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1321 abi_ulong target_tz_addr)
1322 {
1323 struct target_timezone *target_tz;
1324
1325 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1326 return -TARGET_EFAULT;
1327 }
1328
1329 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1330 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1331
1332 unlock_user_struct(target_tz, target_tz_addr, 0);
1333
1334 return 0;
1335 }
1336 #endif
1337
1338 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1339 #include <mqueue.h>
1340
1341 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1342 abi_ulong target_mq_attr_addr)
1343 {
1344 struct target_mq_attr *target_mq_attr;
1345
1346 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1347 target_mq_attr_addr, 1))
1348 return -TARGET_EFAULT;
1349
1350 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1351 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1352 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1353 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1354
1355 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1356
1357 return 0;
1358 }
1359
1360 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1361 const struct mq_attr *attr)
1362 {
1363 struct target_mq_attr *target_mq_attr;
1364
1365 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1366 target_mq_attr_addr, 0))
1367 return -TARGET_EFAULT;
1368
1369 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1370 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1371 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1372 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1373
1374 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1375
1376 return 0;
1377 }
1378 #endif
1379
1380 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1381 /* do_select() must return target values and target errnos. */
1382 static abi_long do_select(int n,
1383 abi_ulong rfd_addr, abi_ulong wfd_addr,
1384 abi_ulong efd_addr, abi_ulong target_tv_addr)
1385 {
1386 fd_set rfds, wfds, efds;
1387 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1388 struct timeval tv;
1389 struct timespec ts, *ts_ptr;
1390 abi_long ret;
1391
1392 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1393 if (ret) {
1394 return ret;
1395 }
1396 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1397 if (ret) {
1398 return ret;
1399 }
1400 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1401 if (ret) {
1402 return ret;
1403 }
1404
1405 if (target_tv_addr) {
1406 if (copy_from_user_timeval(&tv, target_tv_addr))
1407 return -TARGET_EFAULT;
1408 ts.tv_sec = tv.tv_sec;
1409 ts.tv_nsec = tv.tv_usec * 1000;
1410 ts_ptr = &ts;
1411 } else {
1412 ts_ptr = NULL;
1413 }
1414
1415 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1416 ts_ptr, NULL));
1417
1418 if (!is_error(ret)) {
1419 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1420 return -TARGET_EFAULT;
1421 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1422 return -TARGET_EFAULT;
1423 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1424 return -TARGET_EFAULT;
1425
1426 if (target_tv_addr) {
1427 tv.tv_sec = ts.tv_sec;
1428 tv.tv_usec = ts.tv_nsec / 1000;
1429 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1430 return -TARGET_EFAULT;
1431 }
1432 }
1433 }
1434
1435 return ret;
1436 }
1437
1438 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1439 static abi_long do_old_select(abi_ulong arg1)
1440 {
1441 struct target_sel_arg_struct *sel;
1442 abi_ulong inp, outp, exp, tvp;
1443 long nsel;
1444
1445 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1446 return -TARGET_EFAULT;
1447 }
1448
1449 nsel = tswapal(sel->n);
1450 inp = tswapal(sel->inp);
1451 outp = tswapal(sel->outp);
1452 exp = tswapal(sel->exp);
1453 tvp = tswapal(sel->tvp);
1454
1455 unlock_user_struct(sel, arg1, 0);
1456
1457 return do_select(nsel, inp, outp, exp, tvp);
1458 }
1459 #endif
1460 #endif
1461
1462 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
1463 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3,
1464 abi_long arg4, abi_long arg5, abi_long arg6,
1465 bool time64)
1466 {
1467 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
1468 fd_set rfds, wfds, efds;
1469 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1470 struct timespec ts, *ts_ptr;
1471 abi_long ret;
1472
1473 /*
1474 * The 6th arg is actually two args smashed together,
1475 * so we cannot use the C library.
1476 */
1477 sigset_t set;
1478 struct {
1479 sigset_t *set;
1480 size_t size;
1481 } sig, *sig_ptr;
1482
1483 abi_ulong arg_sigset, arg_sigsize, *arg7;
1484 target_sigset_t *target_sigset;
1485
1486 n = arg1;
1487 rfd_addr = arg2;
1488 wfd_addr = arg3;
1489 efd_addr = arg4;
1490 ts_addr = arg5;
1491
1492 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1493 if (ret) {
1494 return ret;
1495 }
1496 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1497 if (ret) {
1498 return ret;
1499 }
1500 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1501 if (ret) {
1502 return ret;
1503 }
1504
1505 /*
1506 * This takes a timespec, and not a timeval, so we cannot
1507 * use the do_select() helper ...
1508 */
1509 if (ts_addr) {
1510 if (time64) {
1511 if (target_to_host_timespec64(&ts, ts_addr)) {
1512 return -TARGET_EFAULT;
1513 }
1514 } else {
1515 if (target_to_host_timespec(&ts, ts_addr)) {
1516 return -TARGET_EFAULT;
1517 }
1518 }
1519 ts_ptr = &ts;
1520 } else {
1521 ts_ptr = NULL;
1522 }
1523
1524 /* Extract the two packed args for the sigset */
1525 if (arg6) {
1526 sig_ptr = &sig;
1527 sig.size = SIGSET_T_SIZE;
1528
1529 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
1530 if (!arg7) {
1531 return -TARGET_EFAULT;
1532 }
1533 arg_sigset = tswapal(arg7[0]);
1534 arg_sigsize = tswapal(arg7[1]);
1535 unlock_user(arg7, arg6, 0);
1536
1537 if (arg_sigset) {
1538 sig.set = &set;
1539 if (arg_sigsize != sizeof(*target_sigset)) {
1540 /* Like the kernel, we enforce correct size sigsets */
1541 return -TARGET_EINVAL;
1542 }
1543 target_sigset = lock_user(VERIFY_READ, arg_sigset,
1544 sizeof(*target_sigset), 1);
1545 if (!target_sigset) {
1546 return -TARGET_EFAULT;
1547 }
1548 target_to_host_sigset(&set, target_sigset);
1549 unlock_user(target_sigset, arg_sigset, 0);
1550 } else {
1551 sig.set = NULL;
1552 }
1553 } else {
1554 sig_ptr = NULL;
1555 }
1556
1557 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1558 ts_ptr, sig_ptr));
1559
1560 if (!is_error(ret)) {
1561 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) {
1562 return -TARGET_EFAULT;
1563 }
1564 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) {
1565 return -TARGET_EFAULT;
1566 }
1567 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) {
1568 return -TARGET_EFAULT;
1569 }
1570 if (time64) {
1571 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) {
1572 return -TARGET_EFAULT;
1573 }
1574 } else {
1575 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) {
1576 return -TARGET_EFAULT;
1577 }
1578 }
1579 }
1580 return ret;
1581 }
1582 #endif
1583
1584 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \
1585 defined(TARGET_NR_ppoll_time64)
1586 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3,
1587 abi_long arg4, abi_long arg5, bool ppoll, bool time64)
1588 {
1589 struct target_pollfd *target_pfd;
1590 unsigned int nfds = arg2;
1591 struct pollfd *pfd;
1592 unsigned int i;
1593 abi_long ret;
1594
1595 pfd = NULL;
1596 target_pfd = NULL;
1597 if (nfds) {
1598 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
1599 return -TARGET_EINVAL;
1600 }
1601 target_pfd = lock_user(VERIFY_WRITE, arg1,
1602 sizeof(struct target_pollfd) * nfds, 1);
1603 if (!target_pfd) {
1604 return -TARGET_EFAULT;
1605 }
1606
1607 pfd = alloca(sizeof(struct pollfd) * nfds);
1608 for (i = 0; i < nfds; i++) {
1609 pfd[i].fd = tswap32(target_pfd[i].fd);
1610 pfd[i].events = tswap16(target_pfd[i].events);
1611 }
1612 }
1613 if (ppoll) {
1614 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
1615 target_sigset_t *target_set;
1616 sigset_t _set, *set = &_set;
1617
1618 if (arg3) {
1619 if (time64) {
1620 if (target_to_host_timespec64(timeout_ts, arg3)) {
1621 unlock_user(target_pfd, arg1, 0);
1622 return -TARGET_EFAULT;
1623 }
1624 } else {
1625 if (target_to_host_timespec(timeout_ts, arg3)) {
1626 unlock_user(target_pfd, arg1, 0);
1627 return -TARGET_EFAULT;
1628 }
1629 }
1630 } else {
1631 timeout_ts = NULL;
1632 }
1633
1634 if (arg4) {
1635 if (arg5 != sizeof(target_sigset_t)) {
1636 unlock_user(target_pfd, arg1, 0);
1637 return -TARGET_EINVAL;
1638 }
1639
1640 target_set = lock_user(VERIFY_READ, arg4,
1641 sizeof(target_sigset_t), 1);
1642 if (!target_set) {
1643 unlock_user(target_pfd, arg1, 0);
1644 return -TARGET_EFAULT;
1645 }
1646 target_to_host_sigset(set, target_set);
1647 } else {
1648 set = NULL;
1649 }
1650
1651 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
1652 set, SIGSET_T_SIZE));
1653
1654 if (!is_error(ret) && arg3) {
1655 if (time64) {
1656 if (host_to_target_timespec64(arg3, timeout_ts)) {
1657 return -TARGET_EFAULT;
1658 }
1659 } else {
1660 if (host_to_target_timespec(arg3, timeout_ts)) {
1661 return -TARGET_EFAULT;
1662 }
1663 }
1664 }
1665 if (arg4) {
1666 unlock_user(target_set, arg4, 0);
1667 }
1668 } else {
1669 struct timespec ts, *pts;
1670
1671 if (arg3 >= 0) {
1672 /* Convert ms to secs, ns */
1673 ts.tv_sec = arg3 / 1000;
1674 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
1675 pts = &ts;
1676 } else {
1677 /* -ve poll() timeout means "infinite" */
1678 pts = NULL;
1679 }
1680 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
1681 }
1682
1683 if (!is_error(ret)) {
1684 for (i = 0; i < nfds; i++) {
1685 target_pfd[i].revents = tswap16(pfd[i].revents);
1686 }
1687 }
1688 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
1689 return ret;
1690 }
1691 #endif
1692
1693 static abi_long do_pipe2(int host_pipe[], int flags)
1694 {
1695 #ifdef CONFIG_PIPE2
1696 return pipe2(host_pipe, flags);
1697 #else
1698 return -ENOSYS;
1699 #endif
1700 }
1701
1702 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1703 int flags, int is_pipe2)
1704 {
1705 int host_pipe[2];
1706 abi_long ret;
1707 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1708
1709 if (is_error(ret))
1710 return get_errno(ret);
1711
1712 /* Several targets have special calling conventions for the original
1713 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1714 if (!is_pipe2) {
1715 #if defined(TARGET_ALPHA)
1716 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1717 return host_pipe[0];
1718 #elif defined(TARGET_MIPS)
1719 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1720 return host_pipe[0];
1721 #elif defined(TARGET_SH4)
1722 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1723 return host_pipe[0];
1724 #elif defined(TARGET_SPARC)
1725 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1726 return host_pipe[0];
1727 #endif
1728 }
1729
1730 if (put_user_s32(host_pipe[0], pipedes)
1731 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1732 return -TARGET_EFAULT;
1733 return get_errno(ret);
1734 }
1735
1736 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1737 abi_ulong target_addr,
1738 socklen_t len)
1739 {
1740 struct target_ip_mreqn *target_smreqn;
1741
1742 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1743 if (!target_smreqn)
1744 return -TARGET_EFAULT;
1745 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1746 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1747 if (len == sizeof(struct target_ip_mreqn))
1748 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1749 unlock_user(target_smreqn, target_addr, 0);
1750
1751 return 0;
1752 }
1753
1754 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1755 abi_ulong target_addr,
1756 socklen_t len)
1757 {
1758 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1759 sa_family_t sa_family;
1760 struct target_sockaddr *target_saddr;
1761
1762 if (fd_trans_target_to_host_addr(fd)) {
1763 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1764 }
1765
1766 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1767 if (!target_saddr)
1768 return -TARGET_EFAULT;
1769
1770 sa_family = tswap16(target_saddr->sa_family);
1771
1772 /* Oops. The caller might send a incomplete sun_path; sun_path
1773 * must be terminated by \0 (see the manual page), but
1774 * unfortunately it is quite common to specify sockaddr_un
1775 * length as "strlen(x->sun_path)" while it should be
1776 * "strlen(...) + 1". We'll fix that here if needed.
1777 * Linux kernel has a similar feature.
1778 */
1779
1780 if (sa_family == AF_UNIX) {
1781 if (len < unix_maxlen && len > 0) {
1782 char *cp = (char*)target_saddr;
1783
1784 if ( cp[len-1] && !cp[len] )
1785 len++;
1786 }
1787 if (len > unix_maxlen)
1788 len = unix_maxlen;
1789 }
1790
1791 memcpy(addr, target_saddr, len);
1792 addr->sa_family = sa_family;
1793 if (sa_family == AF_NETLINK) {
1794 struct sockaddr_nl *nladdr;
1795
1796 nladdr = (struct sockaddr_nl *)addr;
1797 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1798 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1799 } else if (sa_family == AF_PACKET) {
1800 struct target_sockaddr_ll *lladdr;
1801
1802 lladdr = (struct target_sockaddr_ll *)addr;
1803 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1804 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1805 }
1806 unlock_user(target_saddr, target_addr, 0);
1807
1808 return 0;
1809 }
1810
1811 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1812 struct sockaddr *addr,
1813 socklen_t len)
1814 {
1815 struct target_sockaddr *target_saddr;
1816
1817 if (len == 0) {
1818 return 0;
1819 }
1820 assert(addr);
1821
1822 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1823 if (!target_saddr)
1824 return -TARGET_EFAULT;
1825 memcpy(target_saddr, addr, len);
1826 if (len >= offsetof(struct target_sockaddr, sa_family) +
1827 sizeof(target_saddr->sa_family)) {
1828 target_saddr->sa_family = tswap16(addr->sa_family);
1829 }
1830 if (addr->sa_family == AF_NETLINK &&
1831 len >= sizeof(struct target_sockaddr_nl)) {
1832 struct target_sockaddr_nl *target_nl =
1833 (struct target_sockaddr_nl *)target_saddr;
1834 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1835 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1836 } else if (addr->sa_family == AF_PACKET) {
1837 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1838 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1839 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1840 } else if (addr->sa_family == AF_INET6 &&
1841 len >= sizeof(struct target_sockaddr_in6)) {
1842 struct target_sockaddr_in6 *target_in6 =
1843 (struct target_sockaddr_in6 *)target_saddr;
1844 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1845 }
1846 unlock_user(target_saddr, target_addr, len);
1847
1848 return 0;
1849 }
1850
1851 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1852 struct target_msghdr *target_msgh)
1853 {
1854 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1855 abi_long msg_controllen;
1856 abi_ulong target_cmsg_addr;
1857 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1858 socklen_t space = 0;
1859
1860 msg_controllen = tswapal(target_msgh->msg_controllen);
1861 if (msg_controllen < sizeof (struct target_cmsghdr))
1862 goto the_end;
1863 target_cmsg_addr = tswapal(target_msgh->msg_control);
1864 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1865 target_cmsg_start = target_cmsg;
1866 if (!target_cmsg)
1867 return -TARGET_EFAULT;
1868
1869 while (cmsg && target_cmsg) {
1870 void *data = CMSG_DATA(cmsg);
1871 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1872
1873 int len = tswapal(target_cmsg->cmsg_len)
1874 - sizeof(struct target_cmsghdr);
1875
1876 space += CMSG_SPACE(len);
1877 if (space > msgh->msg_controllen) {
1878 space -= CMSG_SPACE(len);
1879 /* This is a QEMU bug, since we allocated the payload
1880 * area ourselves (unlike overflow in host-to-target
1881 * conversion, which is just the guest giving us a buffer
1882 * that's too small). It can't happen for the payload types
1883 * we currently support; if it becomes an issue in future
1884 * we would need to improve our allocation strategy to
1885 * something more intelligent than "twice the size of the
1886 * target buffer we're reading from".
1887 */
1888 qemu_log_mask(LOG_UNIMP,
1889 ("Unsupported ancillary data %d/%d: "
1890 "unhandled msg size\n"),
1891 tswap32(target_cmsg->cmsg_level),
1892 tswap32(target_cmsg->cmsg_type));
1893 break;
1894 }
1895
1896 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1897 cmsg->cmsg_level = SOL_SOCKET;
1898 } else {
1899 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1900 }
1901 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1902 cmsg->cmsg_len = CMSG_LEN(len);
1903
1904 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1905 int *fd = (int *)data;
1906 int *target_fd = (int *)target_data;
1907 int i, numfds = len / sizeof(int);
1908
1909 for (i = 0; i < numfds; i++) {
1910 __get_user(fd[i], target_fd + i);
1911 }
1912 } else if (cmsg->cmsg_level == SOL_SOCKET
1913 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1914 struct ucred *cred = (struct ucred *)data;
1915 struct target_ucred *target_cred =
1916 (struct target_ucred *)target_data;
1917
1918 __get_user(cred->pid, &target_cred->pid);
1919 __get_user(cred->uid, &target_cred->uid);
1920 __get_user(cred->gid, &target_cred->gid);
1921 } else {
1922 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1923 cmsg->cmsg_level, cmsg->cmsg_type);
1924 memcpy(data, target_data, len);
1925 }
1926
1927 cmsg = CMSG_NXTHDR(msgh, cmsg);
1928 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1929 target_cmsg_start);
1930 }
1931 unlock_user(target_cmsg, target_cmsg_addr, 0);
1932 the_end:
1933 msgh->msg_controllen = space;
1934 return 0;
1935 }
1936
1937 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1938 struct msghdr *msgh)
1939 {
1940 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1941 abi_long msg_controllen;
1942 abi_ulong target_cmsg_addr;
1943 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1944 socklen_t space = 0;
1945
1946 msg_controllen = tswapal(target_msgh->msg_controllen);
1947 if (msg_controllen < sizeof (struct target_cmsghdr))
1948 goto the_end;
1949 target_cmsg_addr = tswapal(target_msgh->msg_control);
1950 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1951 target_cmsg_start = target_cmsg;
1952 if (!target_cmsg)
1953 return -TARGET_EFAULT;
1954
1955 while (cmsg && target_cmsg) {
1956 void *data = CMSG_DATA(cmsg);
1957 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1958
1959 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1960 int tgt_len, tgt_space;
1961
1962 /* We never copy a half-header but may copy half-data;
1963 * this is Linux's behaviour in put_cmsg(). Note that
1964 * truncation here is a guest problem (which we report
1965 * to the guest via the CTRUNC bit), unlike truncation
1966 * in target_to_host_cmsg, which is a QEMU bug.
1967 */
1968 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1969 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1970 break;
1971 }
1972
1973 if (cmsg->cmsg_level == SOL_SOCKET) {
1974 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1975 } else {
1976 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1977 }
1978 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1979
1980 /* Payload types which need a different size of payload on
1981 * the target must adjust tgt_len here.
1982 */
1983 tgt_len = len;
1984 switch (cmsg->cmsg_level) {
1985 case SOL_SOCKET:
1986 switch (cmsg->cmsg_type) {
1987 case SO_TIMESTAMP:
1988 tgt_len = sizeof(struct target_timeval);
1989 break;
1990 default:
1991 break;
1992 }
1993 break;
1994 default:
1995 break;
1996 }
1997
1998 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1999 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
2000 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
2001 }
2002
2003 /* We must now copy-and-convert len bytes of payload
2004 * into tgt_len bytes of destination space. Bear in mind
2005 * that in both source and destination we may be dealing
2006 * with a truncated value!
2007 */
2008 switch (cmsg->cmsg_level) {
2009 case SOL_SOCKET:
2010 switch (cmsg->cmsg_type) {
2011 case SCM_RIGHTS:
2012 {
2013 int *fd = (int *)data;
2014 int *target_fd = (int *)target_data;
2015 int i, numfds = tgt_len / sizeof(int);
2016
2017 for (i = 0; i < numfds; i++) {
2018 __put_user(fd[i], target_fd + i);
2019 }
2020 break;
2021 }
2022 case SO_TIMESTAMP:
2023 {
2024 struct timeval *tv = (struct timeval *)data;
2025 struct target_timeval *target_tv =
2026 (struct target_timeval *)target_data;
2027
2028 if (len != sizeof(struct timeval) ||
2029 tgt_len != sizeof(struct target_timeval)) {
2030 goto unimplemented;
2031 }
2032
2033 /* copy struct timeval to target */
2034 __put_user(tv->tv_sec, &target_tv->tv_sec);
2035 __put_user(tv->tv_usec, &target_tv->tv_usec);
2036 break;
2037 }
2038 case SCM_CREDENTIALS:
2039 {
2040 struct ucred *cred = (struct ucred *)data;
2041 struct target_ucred *target_cred =
2042 (struct target_ucred *)target_data;
2043
2044 __put_user(cred->pid, &target_cred->pid);
2045 __put_user(cred->uid, &target_cred->uid);
2046 __put_user(cred->gid, &target_cred->gid);
2047 break;
2048 }
2049 default:
2050 goto unimplemented;
2051 }
2052 break;
2053
2054 case SOL_IP:
2055 switch (cmsg->cmsg_type) {
2056 case IP_TTL:
2057 {
2058 uint32_t *v = (uint32_t *)data;
2059 uint32_t *t_int = (uint32_t *)target_data;
2060
2061 if (len != sizeof(uint32_t) ||
2062 tgt_len != sizeof(uint32_t)) {
2063 goto unimplemented;
2064 }
2065 __put_user(*v, t_int);
2066 break;
2067 }
2068 case IP_RECVERR:
2069 {
2070 struct errhdr_t {
2071 struct sock_extended_err ee;
2072 struct sockaddr_in offender;
2073 };
2074 struct errhdr_t *errh = (struct errhdr_t *)data;
2075 struct errhdr_t *target_errh =
2076 (struct errhdr_t *)target_data;
2077
2078 if (len != sizeof(struct errhdr_t) ||
2079 tgt_len != sizeof(struct errhdr_t)) {
2080 goto unimplemented;
2081 }
2082 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2083 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2084 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2085 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2086 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2087 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2088 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2089 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2090 (void *) &errh->offender, sizeof(errh->offender));
2091 break;
2092 }
2093 default:
2094 goto unimplemented;
2095 }
2096 break;
2097
2098 case SOL_IPV6:
2099 switch (cmsg->cmsg_type) {
2100 case IPV6_HOPLIMIT:
2101 {
2102 uint32_t *v = (uint32_t *)data;
2103 uint32_t *t_int = (uint32_t *)target_data;
2104
2105 if (len != sizeof(uint32_t) ||
2106 tgt_len != sizeof(uint32_t)) {
2107 goto unimplemented;
2108 }
2109 __put_user(*v, t_int);
2110 break;
2111 }
2112 case IPV6_RECVERR:
2113 {
2114 struct errhdr6_t {
2115 struct sock_extended_err ee;
2116 struct sockaddr_in6 offender;
2117 };
2118 struct errhdr6_t *errh = (struct errhdr6_t *)data;
2119 struct errhdr6_t *target_errh =
2120 (struct errhdr6_t *)target_data;
2121
2122 if (len != sizeof(struct errhdr6_t) ||
2123 tgt_len != sizeof(struct errhdr6_t)) {
2124 goto unimplemented;
2125 }
2126 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2127 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2128 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2129 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2130 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2131 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2132 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2133 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2134 (void *) &errh->offender, sizeof(errh->offender));
2135 break;
2136 }
2137 default:
2138 goto unimplemented;
2139 }
2140 break;
2141
2142 default:
2143 unimplemented:
2144 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
2145 cmsg->cmsg_level, cmsg->cmsg_type);
2146 memcpy(target_data, data, MIN(len, tgt_len));
2147 if (tgt_len > len) {
2148 memset(target_data + len, 0, tgt_len - len);
2149 }
2150 }
2151
2152 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
2153 tgt_space = TARGET_CMSG_SPACE(tgt_len);
2154 if (msg_controllen < tgt_space) {
2155 tgt_space = msg_controllen;
2156 }
2157 msg_controllen -= tgt_space;
2158 space += tgt_space;
2159 cmsg = CMSG_NXTHDR(msgh, cmsg);
2160 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
2161 target_cmsg_start);
2162 }
2163 unlock_user(target_cmsg, target_cmsg_addr, space);
2164 the_end:
2165 target_msgh->msg_controllen = tswapal(space);
2166 return 0;
2167 }
2168
2169 /* do_setsockopt() Must return target values and target errnos. */
2170 static abi_long do_setsockopt(int sockfd, int level, int optname,
2171 abi_ulong optval_addr, socklen_t optlen)
2172 {
2173 abi_long ret;
2174 int val;
2175 struct ip_mreqn *ip_mreq;
2176 struct ip_mreq_source *ip_mreq_source;
2177
2178 switch(level) {
2179 case SOL_TCP:
2180 /* TCP options all take an 'int' value. */
2181 if (optlen < sizeof(uint32_t))
2182 return -TARGET_EINVAL;
2183
2184 if (get_user_u32(val, optval_addr))
2185 return -TARGET_EFAULT;
2186 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2187 break;
2188 case SOL_IP:
2189 switch(optname) {
2190 case IP_TOS:
2191 case IP_TTL:
2192 case IP_HDRINCL:
2193 case IP_ROUTER_ALERT:
2194 case IP_RECVOPTS:
2195 case IP_RETOPTS:
2196 case IP_PKTINFO:
2197 case IP_MTU_DISCOVER:
2198 case IP_RECVERR:
2199 case IP_RECVTTL:
2200 case IP_RECVTOS:
2201 #ifdef IP_FREEBIND
2202 case IP_FREEBIND:
2203 #endif
2204 case IP_MULTICAST_TTL:
2205 case IP_MULTICAST_LOOP:
2206 val = 0;
2207 if (optlen >= sizeof(uint32_t)) {
2208 if (get_user_u32(val, optval_addr))
2209 return -TARGET_EFAULT;
2210 } else if (optlen >= 1) {
2211 if (get_user_u8(val, optval_addr))
2212 return -TARGET_EFAULT;
2213 }
2214 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2215 break;
2216 case IP_ADD_MEMBERSHIP:
2217 case IP_DROP_MEMBERSHIP:
2218 if (optlen < sizeof (struct target_ip_mreq) ||
2219 optlen > sizeof (struct target_ip_mreqn))
2220 return -TARGET_EINVAL;
2221
2222 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2223 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2224 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2225 break;
2226
2227 case IP_BLOCK_SOURCE:
2228 case IP_UNBLOCK_SOURCE:
2229 case IP_ADD_SOURCE_MEMBERSHIP:
2230 case IP_DROP_SOURCE_MEMBERSHIP:
2231 if (optlen != sizeof (struct target_ip_mreq_source))
2232 return -TARGET_EINVAL;
2233
2234 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2235 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2236 unlock_user (ip_mreq_source, optval_addr, 0);
2237 break;
2238
2239 default:
2240 goto unimplemented;
2241 }
2242 break;
2243 case SOL_IPV6:
2244 switch (optname) {
2245 case IPV6_MTU_DISCOVER:
2246 case IPV6_MTU:
2247 case IPV6_V6ONLY:
2248 case IPV6_RECVPKTINFO:
2249 case IPV6_UNICAST_HOPS:
2250 case IPV6_MULTICAST_HOPS:
2251 case IPV6_MULTICAST_LOOP:
2252 case IPV6_RECVERR:
2253 case IPV6_RECVHOPLIMIT:
2254 case IPV6_2292HOPLIMIT:
2255 case IPV6_CHECKSUM:
2256 case IPV6_ADDRFORM:
2257 case IPV6_2292PKTINFO:
2258 case IPV6_RECVTCLASS:
2259 case IPV6_RECVRTHDR:
2260 case IPV6_2292RTHDR:
2261 case IPV6_RECVHOPOPTS:
2262 case IPV6_2292HOPOPTS:
2263 case IPV6_RECVDSTOPTS:
2264 case IPV6_2292DSTOPTS:
2265 case IPV6_TCLASS:
2266 #ifdef IPV6_RECVPATHMTU
2267 case IPV6_RECVPATHMTU:
2268 #endif
2269 #ifdef IPV6_TRANSPARENT
2270 case IPV6_TRANSPARENT:
2271 #endif
2272 #ifdef IPV6_FREEBIND
2273 case IPV6_FREEBIND:
2274 #endif
2275 #ifdef IPV6_RECVORIGDSTADDR
2276 case IPV6_RECVORIGDSTADDR:
2277 #endif
2278 val = 0;
2279 if (optlen < sizeof(uint32_t)) {
2280 return -TARGET_EINVAL;
2281 }
2282 if (get_user_u32(val, optval_addr)) {
2283 return -TARGET_EFAULT;
2284 }
2285 ret = get_errno(setsockopt(sockfd, level, optname,
2286 &val, sizeof(val)));
2287 break;
2288 case IPV6_PKTINFO:
2289 {
2290 struct in6_pktinfo pki;
2291
2292 if (optlen < sizeof(pki)) {
2293 return -TARGET_EINVAL;
2294 }
2295
2296 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2297 return -TARGET_EFAULT;
2298 }
2299
2300 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2301
2302 ret = get_errno(setsockopt(sockfd, level, optname,
2303 &pki, sizeof(pki)));
2304 break;
2305 }
2306 case IPV6_ADD_MEMBERSHIP:
2307 case IPV6_DROP_MEMBERSHIP:
2308 {
2309 struct ipv6_mreq ipv6mreq;
2310
2311 if (optlen < sizeof(ipv6mreq)) {
2312 return -TARGET_EINVAL;
2313 }
2314
2315 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
2316 return -TARGET_EFAULT;
2317 }
2318
2319 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
2320
2321 ret = get_errno(setsockopt(sockfd, level, optname,
2322 &ipv6mreq, sizeof(ipv6mreq)));
2323 break;
2324 }
2325 default:
2326 goto unimplemented;
2327 }
2328 break;
2329 case SOL_ICMPV6:
2330 switch (optname) {
2331 case ICMPV6_FILTER:
2332 {
2333 struct icmp6_filter icmp6f;
2334
2335 if (optlen > sizeof(icmp6f)) {
2336 optlen = sizeof(icmp6f);
2337 }
2338
2339 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2340 return -TARGET_EFAULT;
2341 }
2342
2343 for (val = 0; val < 8; val++) {
2344 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2345 }
2346
2347 ret = get_errno(setsockopt(sockfd, level, optname,
2348 &icmp6f, optlen));
2349 break;
2350 }
2351 default:
2352 goto unimplemented;
2353 }
2354 break;
2355 case SOL_RAW:
2356 switch (optname) {
2357 case ICMP_FILTER:
2358 case IPV6_CHECKSUM:
2359 /* those take an u32 value */
2360 if (optlen < sizeof(uint32_t)) {
2361 return -TARGET_EINVAL;
2362 }
2363
2364 if (get_user_u32(val, optval_addr)) {
2365 return -TARGET_EFAULT;
2366 }
2367 ret = get_errno(setsockopt(sockfd, level, optname,
2368 &val, sizeof(val)));
2369 break;
2370
2371 default:
2372 goto unimplemented;
2373 }
2374 break;
2375 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2376 case SOL_ALG:
2377 switch (optname) {
2378 case ALG_SET_KEY:
2379 {
2380 char *alg_key = g_malloc(optlen);
2381
2382 if (!alg_key) {
2383 return -TARGET_ENOMEM;
2384 }
2385 if (copy_from_user(alg_key, optval_addr, optlen)) {
2386 g_free(alg_key);
2387 return -TARGET_EFAULT;
2388 }
2389 ret = get_errno(setsockopt(sockfd, level, optname,
2390 alg_key, optlen));
2391 g_free(alg_key);
2392 break;
2393 }
2394 case ALG_SET_AEAD_AUTHSIZE:
2395 {
2396 ret = get_errno(setsockopt(sockfd, level, optname,
2397 NULL, optlen));
2398 break;
2399 }
2400 default:
2401 goto unimplemented;
2402 }
2403 break;
2404 #endif
2405 case TARGET_SOL_SOCKET:
2406 switch (optname) {
2407 case TARGET_SO_RCVTIMEO:
2408 {
2409 struct timeval tv;
2410
2411 optname = SO_RCVTIMEO;
2412
2413 set_timeout:
2414 if (optlen != sizeof(struct target_timeval)) {
2415 return -TARGET_EINVAL;
2416 }
2417
2418 if (copy_from_user_timeval(&tv, optval_addr)) {
2419 return -TARGET_EFAULT;
2420 }
2421
2422 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2423 &tv, sizeof(tv)));
2424 return ret;
2425 }
2426 case TARGET_SO_SNDTIMEO:
2427 optname = SO_SNDTIMEO;
2428 goto set_timeout;
2429 case TARGET_SO_ATTACH_FILTER:
2430 {
2431 struct target_sock_fprog *tfprog;
2432 struct target_sock_filter *tfilter;
2433 struct sock_fprog fprog;
2434 struct sock_filter *filter;
2435 int i;
2436
2437 if (optlen != sizeof(*tfprog)) {
2438 return -TARGET_EINVAL;
2439 }
2440 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2441 return -TARGET_EFAULT;
2442 }
2443 if (!lock_user_struct(VERIFY_READ, tfilter,
2444 tswapal(tfprog->filter), 0)) {
2445 unlock_user_struct(tfprog, optval_addr, 1);
2446 return -TARGET_EFAULT;
2447 }
2448
2449 fprog.len = tswap16(tfprog->len);
2450 filter = g_try_new(struct sock_filter, fprog.len);
2451 if (filter == NULL) {
2452 unlock_user_struct(tfilter, tfprog->filter, 1);
2453 unlock_user_struct(tfprog, optval_addr, 1);
2454 return -TARGET_ENOMEM;
2455 }
2456 for (i = 0; i < fprog.len; i++) {
2457 filter[i].code = tswap16(tfilter[i].code);
2458 filter[i].jt = tfilter[i].jt;
2459 filter[i].jf = tfilter[i].jf;
2460 filter[i].k = tswap32(tfilter[i].k);
2461 }
2462 fprog.filter = filter;
2463
2464 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2465 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2466 g_free(filter);
2467
2468 unlock_user_struct(tfilter, tfprog->filter, 1);
2469 unlock_user_struct(tfprog, optval_addr, 1);
2470 return ret;
2471 }
2472 case TARGET_SO_BINDTODEVICE:
2473 {
2474 char *dev_ifname, *addr_ifname;
2475
2476 if (optlen > IFNAMSIZ - 1) {
2477 optlen = IFNAMSIZ - 1;
2478 }
2479 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2480 if (!dev_ifname) {
2481 return -TARGET_EFAULT;
2482 }
2483 optname = SO_BINDTODEVICE;
2484 addr_ifname = alloca(IFNAMSIZ);
2485 memcpy(addr_ifname, dev_ifname, optlen);
2486 addr_ifname[optlen] = 0;
2487 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2488 addr_ifname, optlen));
2489 unlock_user (dev_ifname, optval_addr, 0);
2490 return ret;
2491 }
2492 case TARGET_SO_LINGER:
2493 {
2494 struct linger lg;
2495 struct target_linger *tlg;
2496
2497 if (optlen != sizeof(struct target_linger)) {
2498 return -TARGET_EINVAL;
2499 }
2500 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2501 return -TARGET_EFAULT;
2502 }
2503 __get_user(lg.l_onoff, &tlg->l_onoff);
2504 __get_user(lg.l_linger, &tlg->l_linger);
2505 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2506 &lg, sizeof(lg)));
2507 unlock_user_struct(tlg, optval_addr, 0);
2508 return ret;
2509 }
2510 /* Options with 'int' argument. */
2511 case TARGET_SO_DEBUG:
2512 optname = SO_DEBUG;
2513 break;
2514 case TARGET_SO_REUSEADDR:
2515 optname = SO_REUSEADDR;
2516 break;
2517 #ifdef SO_REUSEPORT
2518 case TARGET_SO_REUSEPORT:
2519 optname = SO_REUSEPORT;
2520 break;
2521 #endif
2522 case TARGET_SO_TYPE:
2523 optname = SO_TYPE;
2524 break;
2525 case TARGET_SO_ERROR:
2526 optname = SO_ERROR;
2527 break;
2528 case TARGET_SO_DONTROUTE:
2529 optname = SO_DONTROUTE;
2530 break;
2531 case TARGET_SO_BROADCAST:
2532 optname = SO_BROADCAST;
2533 break;
2534 case TARGET_SO_SNDBUF:
2535 optname = SO_SNDBUF;
2536 break;
2537 case TARGET_SO_SNDBUFFORCE:
2538 optname = SO_SNDBUFFORCE;
2539 break;
2540 case TARGET_SO_RCVBUF:
2541 optname = SO_RCVBUF;
2542 break;
2543 case TARGET_SO_RCVBUFFORCE:
2544 optname = SO_RCVBUFFORCE;
2545 break;
2546 case TARGET_SO_KEEPALIVE:
2547 optname = SO_KEEPALIVE;
2548 break;
2549 case TARGET_SO_OOBINLINE:
2550 optname = SO_OOBINLINE;
2551 break;
2552 case TARGET_SO_NO_CHECK:
2553 optname = SO_NO_CHECK;
2554 break;
2555 case TARGET_SO_PRIORITY:
2556 optname = SO_PRIORITY;
2557 break;
2558 #ifdef SO_BSDCOMPAT
2559 case TARGET_SO_BSDCOMPAT:
2560 optname = SO_BSDCOMPAT;
2561 break;
2562 #endif
2563 case TARGET_SO_PASSCRED:
2564 optname = SO_PASSCRED;
2565 break;
2566 case TARGET_SO_PASSSEC:
2567 optname = SO_PASSSEC;
2568 break;
2569 case TARGET_SO_TIMESTAMP:
2570 optname = SO_TIMESTAMP;
2571 break;
2572 case TARGET_SO_RCVLOWAT:
2573 optname = SO_RCVLOWAT;
2574 break;
2575 default:
2576 goto unimplemented;
2577 }
2578 if (optlen < sizeof(uint32_t))
2579 return -TARGET_EINVAL;
2580
2581 if (get_user_u32(val, optval_addr))
2582 return -TARGET_EFAULT;
2583 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2584 break;
2585 #ifdef SOL_NETLINK
2586 case SOL_NETLINK:
2587 switch (optname) {
2588 case NETLINK_PKTINFO:
2589 case NETLINK_ADD_MEMBERSHIP:
2590 case NETLINK_DROP_MEMBERSHIP:
2591 case NETLINK_BROADCAST_ERROR:
2592 case NETLINK_NO_ENOBUFS:
2593 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2594 case NETLINK_LISTEN_ALL_NSID:
2595 case NETLINK_CAP_ACK:
2596 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2597 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2598 case NETLINK_EXT_ACK:
2599 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2600 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2601 case NETLINK_GET_STRICT_CHK:
2602 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2603 break;
2604 default:
2605 goto unimplemented;
2606 }
2607 val = 0;
2608 if (optlen < sizeof(uint32_t)) {
2609 return -TARGET_EINVAL;
2610 }
2611 if (get_user_u32(val, optval_addr)) {
2612 return -TARGET_EFAULT;
2613 }
2614 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
2615 sizeof(val)));
2616 break;
2617 #endif /* SOL_NETLINK */
2618 default:
2619 unimplemented:
2620 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
2621 level, optname);
2622 ret = -TARGET_ENOPROTOOPT;
2623 }
2624 return ret;
2625 }
2626
2627 /* do_getsockopt() Must return target values and target errnos. */
2628 static abi_long do_getsockopt(int sockfd, int level, int optname,
2629 abi_ulong optval_addr, abi_ulong optlen)
2630 {
2631 abi_long ret;
2632 int len, val;
2633 socklen_t lv;
2634
2635 switch(level) {
2636 case TARGET_SOL_SOCKET:
2637 level = SOL_SOCKET;
2638 switch (optname) {
2639 /* These don't just return a single integer */
2640 case TARGET_SO_PEERNAME:
2641 goto unimplemented;
2642 case TARGET_SO_RCVTIMEO: {
2643 struct timeval tv;
2644 socklen_t tvlen;
2645
2646 optname = SO_RCVTIMEO;
2647
2648 get_timeout:
2649 if (get_user_u32(len, optlen)) {
2650 return -TARGET_EFAULT;
2651 }
2652 if (len < 0) {
2653 return -TARGET_EINVAL;
2654 }
2655
2656 tvlen = sizeof(tv);
2657 ret = get_errno(getsockopt(sockfd, level, optname,
2658 &tv, &tvlen));
2659 if (ret < 0) {
2660 return ret;
2661 }
2662 if (len > sizeof(struct target_timeval)) {
2663 len = sizeof(struct target_timeval);
2664 }
2665 if (copy_to_user_timeval(optval_addr, &tv)) {
2666 return -TARGET_EFAULT;
2667 }
2668 if (put_user_u32(len, optlen)) {
2669 return -TARGET_EFAULT;
2670 }
2671 break;
2672 }
2673 case TARGET_SO_SNDTIMEO:
2674 optname = SO_SNDTIMEO;
2675 goto get_timeout;
2676 case TARGET_SO_PEERCRED: {
2677 struct ucred cr;
2678 socklen_t crlen;
2679 struct target_ucred *tcr;
2680
2681 if (get_user_u32(len, optlen)) {
2682 return -TARGET_EFAULT;
2683 }
2684 if (len < 0) {
2685 return -TARGET_EINVAL;
2686 }
2687
2688 crlen = sizeof(cr);
2689 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2690 &cr, &crlen));
2691 if (ret < 0) {
2692 return ret;
2693 }
2694 if (len > crlen) {
2695 len = crlen;
2696 }
2697 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2698 return -TARGET_EFAULT;
2699 }
2700 __put_user(cr.pid, &tcr->pid);
2701 __put_user(cr.uid, &tcr->uid);
2702 __put_user(cr.gid, &tcr->gid);
2703 unlock_user_struct(tcr, optval_addr, 1);
2704 if (put_user_u32(len, optlen)) {
2705 return -TARGET_EFAULT;
2706 }
2707 break;
2708 }
2709 case TARGET_SO_PEERSEC: {
2710 char *name;
2711
2712 if (get_user_u32(len, optlen)) {
2713 return -TARGET_EFAULT;
2714 }
2715 if (len < 0) {
2716 return -TARGET_EINVAL;
2717 }
2718 name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
2719 if (!name) {
2720 return -TARGET_EFAULT;
2721 }
2722 lv = len;
2723 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
2724 name, &lv));
2725 if (put_user_u32(lv, optlen)) {
2726 ret = -TARGET_EFAULT;
2727 }
2728 unlock_user(name, optval_addr, lv);
2729 break;
2730 }
2731 case TARGET_SO_LINGER:
2732 {
2733 struct linger lg;
2734 socklen_t lglen;
2735 struct target_linger *tlg;
2736
2737 if (get_user_u32(len, optlen)) {
2738 return -TARGET_EFAULT;
2739 }
2740 if (len < 0) {
2741 return -TARGET_EINVAL;
2742 }
2743
2744 lglen = sizeof(lg);
2745 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2746 &lg, &lglen));
2747 if (ret < 0) {
2748 return ret;
2749 }
2750 if (len > lglen) {
2751 len = lglen;
2752 }
2753 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2754 return -TARGET_EFAULT;
2755 }
2756 __put_user(lg.l_onoff, &tlg->l_onoff);
2757 __put_user(lg.l_linger, &tlg->l_linger);
2758 unlock_user_struct(tlg, optval_addr, 1);
2759 if (put_user_u32(len, optlen)) {
2760 return -TARGET_EFAULT;
2761 }
2762 break;
2763 }
2764 /* Options with 'int' argument. */
2765 case TARGET_SO_DEBUG:
2766 optname = SO_DEBUG;
2767 goto int_case;
2768 case TARGET_SO_REUSEADDR:
2769 optname = SO_REUSEADDR;
2770 goto int_case;
2771 #ifdef SO_REUSEPORT
2772 case TARGET_SO_REUSEPORT:
2773 optname = SO_REUSEPORT;
2774 goto int_case;
2775 #endif
2776 case TARGET_SO_TYPE:
2777 optname = SO_TYPE;
2778 goto int_case;
2779 case TARGET_SO_ERROR:
2780 optname = SO_ERROR;
2781 goto int_case;
2782 case TARGET_SO_DONTROUTE:
2783 optname = SO_DONTROUTE;
2784 goto int_case;
2785 case TARGET_SO_BROADCAST:
2786 optname = SO_BROADCAST;
2787 goto int_case;
2788 case TARGET_SO_SNDBUF:
2789 optname = SO_SNDBUF;
2790 goto int_case;
2791 case TARGET_SO_RCVBUF:
2792 optname = SO_RCVBUF;
2793 goto int_case;
2794 case TARGET_SO_KEEPALIVE:
2795 optname = SO_KEEPALIVE;
2796 goto int_case;
2797 case TARGET_SO_OOBINLINE:
2798 optname = SO_OOBINLINE;
2799 goto int_case;
2800 case TARGET_SO_NO_CHECK:
2801 optname = SO_NO_CHECK;
2802 goto int_case;
2803 case TARGET_SO_PRIORITY:
2804 optname = SO_PRIORITY;
2805 goto int_case;
2806 #ifdef SO_BSDCOMPAT
2807 case TARGET_SO_BSDCOMPAT:
2808 optname = SO_BSDCOMPAT;
2809 goto int_case;
2810 #endif
2811 case TARGET_SO_PASSCRED:
2812 optname = SO_PASSCRED;
2813 goto int_case;
2814 case TARGET_SO_TIMESTAMP:
2815 optname = SO_TIMESTAMP;
2816 goto int_case;
2817 case TARGET_SO_RCVLOWAT:
2818 optname = SO_RCVLOWAT;
2819 goto int_case;
2820 case TARGET_SO_ACCEPTCONN:
2821 optname = SO_ACCEPTCONN;
2822 goto int_case;
2823 default:
2824 goto int_case;
2825 }
2826 break;
2827 case SOL_TCP:
2828 /* TCP options all take an 'int' value. */
2829 int_case:
2830 if (get_user_u32(len, optlen))
2831 return -TARGET_EFAULT;
2832 if (len < 0)
2833 return -TARGET_EINVAL;
2834 lv = sizeof(lv);
2835 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2836 if (ret < 0)
2837 return ret;
2838 if (optname == SO_TYPE) {
2839 val = host_to_target_sock_type(val);
2840 }
2841 if (len > lv)
2842 len = lv;
2843 if (len == 4) {
2844 if (put_user_u32(val, optval_addr))
2845 return -TARGET_EFAULT;
2846 } else {
2847 if (put_user_u8(val, optval_addr))
2848 return -TARGET_EFAULT;
2849 }
2850 if (put_user_u32(len, optlen))
2851 return -TARGET_EFAULT;
2852 break;
2853 case SOL_IP:
2854 switch(optname) {
2855 case IP_TOS:
2856 case IP_TTL:
2857 case IP_HDRINCL:
2858 case IP_ROUTER_ALERT:
2859 case IP_RECVOPTS:
2860 case IP_RETOPTS:
2861 case IP_PKTINFO:
2862 case IP_MTU_DISCOVER:
2863 case IP_RECVERR:
2864 case IP_RECVTOS:
2865 #ifdef IP_FREEBIND
2866 case IP_FREEBIND:
2867 #endif
2868 case IP_MULTICAST_TTL:
2869 case IP_MULTICAST_LOOP:
2870 if (get_user_u32(len, optlen))
2871 return -TARGET_EFAULT;
2872 if (len < 0)
2873 return -TARGET_EINVAL;
2874 lv = sizeof(lv);
2875 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2876 if (ret < 0)
2877 return ret;
2878 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2879 len = 1;
2880 if (put_user_u32(len, optlen)
2881 || put_user_u8(val, optval_addr))
2882 return -TARGET_EFAULT;
2883 } else {
2884 if (len > sizeof(int))
2885 len = sizeof(int);
2886 if (put_user_u32(len, optlen)
2887 || put_user_u32(val, optval_addr))
2888 return -TARGET_EFAULT;
2889 }
2890 break;
2891 default:
2892 ret = -TARGET_ENOPROTOOPT;
2893 break;
2894 }
2895 break;
2896 case SOL_IPV6:
2897 switch (optname) {
2898 case IPV6_MTU_DISCOVER:
2899 case IPV6_MTU:
2900 case IPV6_V6ONLY:
2901 case IPV6_RECVPKTINFO:
2902 case IPV6_UNICAST_HOPS:
2903 case IPV6_MULTICAST_HOPS:
2904 case IPV6_MULTICAST_LOOP:
2905 case IPV6_RECVERR:
2906 case IPV6_RECVHOPLIMIT:
2907 case IPV6_2292HOPLIMIT:
2908 case IPV6_CHECKSUM:
2909 case IPV6_ADDRFORM:
2910 case IPV6_2292PKTINFO:
2911 case IPV6_RECVTCLASS:
2912 case IPV6_RECVRTHDR:
2913 case IPV6_2292RTHDR:
2914 case IPV6_RECVHOPOPTS:
2915 case IPV6_2292HOPOPTS:
2916 case IPV6_RECVDSTOPTS:
2917 case IPV6_2292DSTOPTS:
2918 case IPV6_TCLASS:
2919 #ifdef IPV6_RECVPATHMTU
2920 case IPV6_RECVPATHMTU:
2921 #endif
2922 #ifdef IPV6_TRANSPARENT
2923 case IPV6_TRANSPARENT:
2924 #endif
2925 #ifdef IPV6_FREEBIND
2926 case IPV6_FREEBIND:
2927 #endif
2928 #ifdef IPV6_RECVORIGDSTADDR
2929 case IPV6_RECVORIGDSTADDR:
2930 #endif
2931 if (get_user_u32(len, optlen))
2932 return -TARGET_EFAULT;
2933 if (len < 0)
2934 return -TARGET_EINVAL;
2935 lv = sizeof(lv);
2936 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2937 if (ret < 0)
2938 return ret;
2939 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2940 len = 1;
2941 if (put_user_u32(len, optlen)
2942 || put_user_u8(val, optval_addr))
2943 return -TARGET_EFAULT;
2944 } else {
2945 if (len > sizeof(int))
2946 len = sizeof(int);
2947 if (put_user_u32(len, optlen)
2948 || put_user_u32(val, optval_addr))
2949 return -TARGET_EFAULT;
2950 }
2951 break;
2952 default:
2953 ret = -TARGET_ENOPROTOOPT;
2954 break;
2955 }
2956 break;
2957 #ifdef SOL_NETLINK
2958 case SOL_NETLINK:
2959 switch (optname) {
2960 case NETLINK_PKTINFO:
2961 case NETLINK_BROADCAST_ERROR:
2962 case NETLINK_NO_ENOBUFS:
2963 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2964 case NETLINK_LISTEN_ALL_NSID:
2965 case NETLINK_CAP_ACK:
2966 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2967 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2968 case NETLINK_EXT_ACK:
2969 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2970 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2971 case NETLINK_GET_STRICT_CHK:
2972 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2973 if (get_user_u32(len, optlen)) {
2974 return -TARGET_EFAULT;
2975 }
2976 if (len != sizeof(val)) {
2977 return -TARGET_EINVAL;
2978 }
2979 lv = len;
2980 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2981 if (ret < 0) {
2982 return ret;
2983 }
2984 if (put_user_u32(lv, optlen)
2985 || put_user_u32(val, optval_addr)) {
2986 return -TARGET_EFAULT;
2987 }
2988 break;
2989 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2990 case NETLINK_LIST_MEMBERSHIPS:
2991 {
2992 uint32_t *results;
2993 int i;
2994 if (get_user_u32(len, optlen)) {
2995 return -TARGET_EFAULT;
2996 }
2997 if (len < 0) {
2998 return -TARGET_EINVAL;
2999 }
3000 results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
3001 if (!results) {
3002 return -TARGET_EFAULT;
3003 }
3004 lv = len;
3005 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
3006 if (ret < 0) {
3007 unlock_user(results, optval_addr, 0);
3008 return ret;
3009 }
3010 /* swap host endianess to target endianess. */
3011 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
3012 results[i] = tswap32(results[i]);
3013 }
3014 if (put_user_u32(lv, optlen)) {
3015 return -TARGET_EFAULT;
3016 }
3017 unlock_user(results, optval_addr, 0);
3018 break;
3019 }
3020 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
3021 default:
3022 goto unimplemented;
3023 }
3024 break;
3025 #endif /* SOL_NETLINK */
3026 default:
3027 unimplemented:
3028 qemu_log_mask(LOG_UNIMP,
3029 "getsockopt level=%d optname=%d not yet supported\n",
3030 level, optname);
3031 ret = -TARGET_EOPNOTSUPP;
3032 break;
3033 }
3034 return ret;
3035 }
3036
3037 /* Convert target low/high pair representing file offset into the host
3038 * low/high pair. This function doesn't handle offsets bigger than 64 bits
3039 * as the kernel doesn't handle them either.
3040 */
3041 static void target_to_host_low_high(abi_ulong tlow,
3042 abi_ulong thigh,
3043 unsigned long *hlow,
3044 unsigned long *hhigh)
3045 {
3046 uint64_t off = tlow |
3047 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
3048 TARGET_LONG_BITS / 2;
3049
3050 *hlow = off;
3051 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
3052 }
3053
3054 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
3055 abi_ulong count, int copy)
3056 {
3057 struct target_iovec *target_vec;
3058 struct iovec *vec;
3059 abi_ulong total_len, max_len;
3060 int i;
3061 int err = 0;
3062 bool bad_address = false;
3063
3064 if (count == 0) {
3065 errno = 0;
3066 return NULL;
3067 }
3068 if (count > IOV_MAX) {
3069 errno = EINVAL;
3070 return NULL;
3071 }
3072
3073 vec = g_try_new0(struct iovec, count);
3074 if (vec == NULL) {
3075 errno = ENOMEM;
3076 return NULL;
3077 }
3078
3079 target_vec = lock_user(VERIFY_READ, target_addr,
3080 count * sizeof(struct target_iovec), 1);
3081 if (target_vec == NULL) {
3082 err = EFAULT;
3083 goto fail2;
3084 }
3085
3086 /* ??? If host page size > target page size, this will result in a
3087 value larger than what we can actually support. */
3088 max_len = 0x7fffffff & TARGET_PAGE_MASK;
3089 total_len = 0;
3090
3091 for (i = 0; i < count; i++) {
3092 abi_ulong base = tswapal(target_vec[i].iov_base);
3093 abi_long len = tswapal(target_vec[i].iov_len);
3094
3095 if (len < 0) {
3096 err = EINVAL;
3097 goto fail;
3098 } else if (len == 0) {
3099 /* Zero length pointer is ignored. */
3100 vec[i].iov_base = 0;
3101 } else {
3102 vec[i].iov_base = lock_user(type, base, len, copy);
3103 /* If the first buffer pointer is bad, this is a fault. But
3104 * subsequent bad buffers will result in a partial write; this
3105 * is realized by filling the vector with null pointers and
3106 * zero lengths. */
3107 if (!vec[i].iov_base) {
3108 if (i == 0) {
3109 err = EFAULT;
3110 goto fail;
3111 } else {
3112 bad_address = true;
3113 }
3114 }
3115 if (bad_address) {
3116 len = 0;
3117 }
3118 if (len > max_len - total_len) {
3119 len = max_len - total_len;
3120 }
3121 }
3122 vec[i].iov_len = len;
3123 total_len += len;
3124 }
3125
3126 unlock_user(target_vec, target_addr, 0);
3127 return vec;
3128
3129 fail:
3130 while (--i >= 0) {
3131 if (tswapal(target_vec[i].iov_len) > 0) {
3132 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3133 }
3134 }
3135 unlock_user(target_vec, target_addr, 0);
3136 fail2:
3137 g_free(vec);
3138 errno = err;
3139 return NULL;
3140 }
3141
3142 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3143 abi_ulong count, int copy)
3144 {
3145 struct target_iovec *target_vec;
3146 int i;
3147
3148 target_vec = lock_user(VERIFY_READ, target_addr,
3149 count * sizeof(struct target_iovec), 1);
3150 if (target_vec) {
3151 for (i = 0; i < count; i++) {
3152 abi_ulong base = tswapal(target_vec[i].iov_base);
3153 abi_long len = tswapal(target_vec[i].iov_len);
3154 if (len < 0) {
3155 break;
3156 }
3157 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3158 }
3159 unlock_user(target_vec, target_addr, 0);
3160 }
3161
3162 g_free(vec);
3163 }
3164
3165 static inline int target_to_host_sock_type(int *type)
3166 {
3167 int host_type = 0;
3168 int target_type = *type;
3169
3170 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3171 case TARGET_SOCK_DGRAM:
3172 host_type = SOCK_DGRAM;
3173 break;
3174 case TARGET_SOCK_STREAM:
3175 host_type = SOCK_STREAM;
3176 break;
3177 default:
3178 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3179 break;
3180 }
3181 if (target_type & TARGET_SOCK_CLOEXEC) {
3182 #if defined(SOCK_CLOEXEC)
3183 host_type |= SOCK_CLOEXEC;
3184 #else
3185 return -TARGET_EINVAL;
3186 #endif
3187 }
3188 if (target_type & TARGET_SOCK_NONBLOCK) {
3189 #if defined(SOCK_NONBLOCK)
3190 host_type |= SOCK_NONBLOCK;
3191 #elif !defined(O_NONBLOCK)
3192 return -TARGET_EINVAL;
3193 #endif
3194 }
3195 *type = host_type;
3196 return 0;
3197 }
3198
3199 /* Try to emulate socket type flags after socket creation. */
3200 static int sock_flags_fixup(int fd, int target_type)
3201 {
3202 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3203 if (target_type & TARGET_SOCK_NONBLOCK) {
3204 int flags = fcntl(fd, F_GETFL);
3205 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3206 close(fd);
3207 return -TARGET_EINVAL;
3208 }
3209 }
3210 #endif
3211 return fd;
3212 }
3213
3214 /* do_socket() Must return target values and target errnos. */
3215 static abi_long do_socket(int domain, int type, int protocol)
3216 {
3217 int target_type = type;
3218 int ret;
3219
3220 ret = target_to_host_sock_type(&type);
3221 if (ret) {
3222 return ret;
3223 }
3224
3225 if (domain == PF_NETLINK && !(
3226 #ifdef CONFIG_RTNETLINK
3227 protocol == NETLINK_ROUTE ||
3228 #endif
3229 protocol == NETLINK_KOBJECT_UEVENT ||
3230 protocol == NETLINK_AUDIT)) {
3231 return -TARGET_EPROTONOSUPPORT;
3232 }
3233
3234 if (domain == AF_PACKET ||
3235 (domain == AF_INET && type == SOCK_PACKET)) {
3236 protocol = tswap16(protocol);
3237 }
3238
3239 ret = get_errno(socket(domain, type, protocol));
3240 if (ret >= 0) {
3241 ret = sock_flags_fixup(ret, target_type);
3242 if (type == SOCK_PACKET) {
3243 /* Manage an obsolete case :
3244 * if socket type is SOCK_PACKET, bind by name
3245 */
3246 fd_trans_register(ret, &target_packet_trans);
3247 } else if (domain == PF_NETLINK) {
3248 switch (protocol) {
3249 #ifdef CONFIG_RTNETLINK
3250 case NETLINK_ROUTE:
3251 fd_trans_register(ret, &target_netlink_route_trans);
3252 break;
3253 #endif
3254 case NETLINK_KOBJECT_UEVENT:
3255 /* nothing to do: messages are strings */
3256 break;
3257 case NETLINK_AUDIT:
3258 fd_trans_register(ret, &target_netlink_audit_trans);
3259 break;
3260 default:
3261 g_assert_not_reached();
3262 }
3263 }
3264 }
3265 return ret;
3266 }
3267
3268 /* do_bind() Must return target values and target errnos. */
3269 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3270 socklen_t addrlen)
3271 {
3272 void *addr;
3273 abi_long ret;
3274
3275 if ((int)addrlen < 0) {
3276 return -TARGET_EINVAL;
3277 }
3278
3279 addr = alloca(addrlen+1);
3280
3281 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3282 if (ret)
3283 return ret;
3284
3285 return get_errno(bind(sockfd, addr, addrlen));
3286 }
3287
3288 /* do_connect() Must return target values and target errnos. */
3289 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3290 socklen_t addrlen)
3291 {
3292 void *addr;
3293 abi_long ret;
3294
3295 if ((int)addrlen < 0) {
3296 return -TARGET_EINVAL;
3297 }
3298
3299 addr = alloca(addrlen+1);
3300
3301 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3302 if (ret)
3303 return ret;
3304
3305 return get_errno(safe_connect(sockfd, addr, addrlen));
3306 }
3307
3308 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3309 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3310 int flags, int send)
3311 {
3312 abi_long ret, len;
3313 struct msghdr msg;
3314 abi_ulong count;
3315 struct iovec *vec;
3316 abi_ulong target_vec;
3317
3318 if (msgp->msg_name) {
3319 msg.msg_namelen = tswap32(msgp->msg_namelen);
3320 msg.msg_name = alloca(msg.msg_namelen+1);
3321 ret = target_to_host_sockaddr(fd, msg.msg_name,
3322 tswapal(msgp->msg_name),
3323 msg.msg_namelen);
3324 if (ret == -TARGET_EFAULT) {
3325 /* For connected sockets msg_name and msg_namelen must
3326 * be ignored, so returning EFAULT immediately is wrong.
3327 * Instead, pass a bad msg_name to the host kernel, and
3328 * let it decide whether to return EFAULT or not.
3329 */
3330 msg.msg_name = (void *)-1;
3331 } else if (ret) {
3332 goto out2;
3333 }
3334 } else {
3335 msg.msg_name = NULL;
3336 msg.msg_namelen = 0;
3337 }
3338 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3339 msg.msg_control = alloca(msg.msg_controllen);
3340 memset(msg.msg_control, 0, msg.msg_controllen);
3341
3342 msg.msg_flags = tswap32(msgp->msg_flags);
3343
3344 count = tswapal(msgp->msg_iovlen);
3345 target_vec = tswapal(msgp->msg_iov);
3346
3347 if (count > IOV_MAX) {
3348 /* sendrcvmsg returns a different errno for this condition than
3349 * readv/writev, so we must catch it here before lock_iovec() does.
3350 */
3351 ret = -TARGET_EMSGSIZE;
3352 goto out2;
3353 }
3354
3355 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3356 target_vec, count, send);
3357 if (vec == NULL) {
3358 ret = -host_to_target_errno(errno);
3359 goto out2;
3360 }
3361 msg.msg_iovlen = count;
3362 msg.msg_iov = vec;
3363
3364 if (send) {
3365 if (fd_trans_target_to_host_data(fd)) {
3366 void *host_msg;
3367
3368 host_msg = g_malloc(msg.msg_iov->iov_len);
3369 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3370 ret = fd_trans_target_to_host_data(fd)(host_msg,
3371 msg.msg_iov->iov_len);
3372 if (ret >= 0) {
3373 msg.msg_iov->iov_base = host_msg;
3374 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3375 }
3376 g_free(host_msg);
3377 } else {
3378 ret = target_to_host_cmsg(&msg, msgp);
3379 if (ret == 0) {
3380 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3381 }
3382 }
3383 } else {
3384 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3385 if (!is_error(ret)) {
3386 len = ret;
3387 if (fd_trans_host_to_target_data(fd)) {
3388 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3389 MIN(msg.msg_iov->iov_len, len));
3390 } else {
3391 ret = host_to_target_cmsg(msgp, &msg);
3392 }
3393 if (!is_error(ret)) {
3394 msgp->msg_namelen = tswap32(msg.msg_namelen);
3395 msgp->msg_flags = tswap32(msg.msg_flags);
3396 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3397 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3398 msg.msg_name, msg.msg_namelen);
3399 if (ret) {
3400 goto out;
3401 }
3402 }
3403
3404 ret = len;
3405 }
3406 }
3407 }
3408
3409 out:
3410 unlock_iovec(vec, target_vec, count, !send);
3411 out2:
3412 return ret;
3413 }
3414
3415 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3416 int flags, int send)
3417 {
3418 abi_long ret;
3419 struct target_msghdr *msgp;
3420
3421 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3422 msgp,
3423 target_msg,
3424 send ? 1 : 0)) {
3425 return -TARGET_EFAULT;
3426 }
3427 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3428 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3429 return ret;
3430 }
3431
3432 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3433 * so it might not have this *mmsg-specific flag either.
3434 */
3435 #ifndef MSG_WAITFORONE
3436 #define MSG_WAITFORONE 0x10000
3437 #endif
3438
3439 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3440 unsigned int vlen, unsigned int flags,
3441 int send)
3442 {
3443 struct target_mmsghdr *mmsgp;
3444 abi_long ret = 0;
3445 int i;
3446
3447 if (vlen > UIO_MAXIOV) {
3448 vlen = UIO_MAXIOV;
3449 }
3450
3451 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3452 if (!mmsgp) {
3453 return -TARGET_EFAULT;
3454 }
3455
3456 for (i = 0; i < vlen; i++) {
3457 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3458 if (is_error(ret)) {
3459 break;
3460 }
3461 mmsgp[i].msg_len = tswap32(ret);
3462 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3463 if (flags & MSG_WAITFORONE) {
3464 flags |= MSG_DONTWAIT;
3465 }
3466 }
3467
3468 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3469
3470 /* Return number of datagrams sent if we sent any at all;
3471 * otherwise return the error.
3472 */
3473 if (i) {
3474 return i;
3475 }
3476 return ret;
3477 }
3478
3479 /* do_accept4() Must return target values and target errnos. */
3480 static abi_long do_accept4(int fd, abi_ulong target_addr,
3481 abi_ulong target_addrlen_addr, int flags)
3482 {
3483 socklen_t addrlen, ret_addrlen;
3484 void *addr;
3485 abi_long ret;
3486 int host_flags;
3487
3488 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3489
3490 if (target_addr == 0) {
3491 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3492 }
3493
3494 /* linux returns EFAULT if addrlen pointer is invalid */
3495 if (get_user_u32(addrlen, target_addrlen_addr))
3496 return -TARGET_EFAULT;
3497
3498 if ((int)addrlen < 0) {
3499 return -TARGET_EINVAL;
3500 }
3501
3502 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3503 return -TARGET_EFAULT;
3504
3505 addr = alloca(addrlen);
3506
3507 ret_addrlen = addrlen;
3508 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3509 if (!is_error(ret)) {
3510 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3511 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3512 ret = -TARGET_EFAULT;
3513 }
3514 }
3515 return ret;
3516 }
3517
3518 /* do_getpeername() Must return target values and target errnos. */
3519 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3520 abi_ulong target_addrlen_addr)
3521 {
3522 socklen_t addrlen, ret_addrlen;
3523 void *addr;
3524 abi_long ret;
3525
3526 if (get_user_u32(addrlen, target_addrlen_addr))
3527 return -TARGET_EFAULT;
3528
3529 if ((int)addrlen < 0) {
3530 return -TARGET_EINVAL;
3531 }
3532
3533 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3534 return -TARGET_EFAULT;
3535
3536 addr = alloca(addrlen);
3537
3538 ret_addrlen = addrlen;
3539 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3540 if (!is_error(ret)) {
3541 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3542 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3543 ret = -TARGET_EFAULT;
3544 }
3545 }
3546 return ret;
3547 }
3548
3549 /* do_getsockname() Must return target values and target errnos. */
3550 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3551 abi_ulong target_addrlen_addr)
3552 {
3553 socklen_t addrlen, ret_addrlen;
3554 void *addr;
3555 abi_long ret;
3556
3557 if (get_user_u32(addrlen, target_addrlen_addr))
3558 return -TARGET_EFAULT;
3559
3560 if ((int)addrlen < 0) {
3561 return -TARGET_EINVAL;
3562 }
3563
3564 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3565 return -TARGET_EFAULT;
3566
3567 addr = alloca(addrlen);
3568
3569 ret_addrlen = addrlen;
3570 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3571 if (!is_error(ret)) {
3572 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3573 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3574 ret = -TARGET_EFAULT;
3575 }
3576 }
3577 return ret;
3578 }
3579
3580 /* do_socketpair() Must return target values and target errnos. */
3581 static abi_long do_socketpair(int domain, int type, int protocol,
3582 abi_ulong target_tab_addr)
3583 {
3584 int tab[2];
3585 abi_long ret;
3586
3587 target_to_host_sock_type(&type);
3588
3589 ret = get_errno(socketpair(domain, type, protocol, tab));
3590 if (!is_error(ret)) {
3591 if (put_user_s32(tab[0], target_tab_addr)
3592 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3593 ret = -TARGET_EFAULT;
3594 }
3595 return ret;
3596 }
3597
3598 /* do_sendto() Must return target values and target errnos. */
3599 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3600 abi_ulong target_addr, socklen_t addrlen)
3601 {
3602 void *addr;
3603 void *host_msg;
3604 void *copy_msg = NULL;
3605 abi_long ret;
3606
3607 if ((int)addrlen < 0) {
3608 return -TARGET_EINVAL;
3609 }
3610
3611 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3612 if (!host_msg)
3613 return -TARGET_EFAULT;
3614 if (fd_trans_target_to_host_data(fd)) {
3615 copy_msg = host_msg;
3616 host_msg = g_malloc(len);
3617 memcpy(host_msg, copy_msg, len);
3618 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3619 if (ret < 0) {
3620 goto fail;
3621 }
3622 }
3623 if (target_addr) {
3624 addr = alloca(addrlen+1);
3625 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3626 if (ret) {
3627 goto fail;
3628 }
3629 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3630 } else {
3631 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3632 }
3633 fail:
3634 if (copy_msg) {
3635 g_free(host_msg);
3636 host_msg = copy_msg;
3637 }
3638 unlock_user(host_msg, msg, 0);
3639 return ret;
3640 }
3641
3642 /* do_recvfrom() Must return target values and target errnos. */
3643 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3644 abi_ulong target_addr,
3645 abi_ulong target_addrlen)
3646 {
3647 socklen_t addrlen, ret_addrlen;
3648 void *addr;
3649 void *host_msg;
3650 abi_long ret;
3651
3652 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3653 if (!host_msg)
3654 return -TARGET_EFAULT;
3655 if (target_addr) {
3656 if (get_user_u32(addrlen, target_addrlen)) {
3657 ret = -TARGET_EFAULT;
3658 goto fail;
3659 }
3660 if ((int)addrlen < 0) {
3661 ret = -TARGET_EINVAL;
3662 goto fail;
3663 }
3664 addr = alloca(addrlen);
3665 ret_addrlen = addrlen;
3666 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3667 addr, &ret_addrlen));
3668 } else {
3669 addr = NULL; /* To keep compiler quiet. */
3670 addrlen = 0; /* To keep compiler quiet. */
3671 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3672 }
3673 if (!is_error(ret)) {
3674 if (fd_trans_host_to_target_data(fd)) {
3675 abi_long trans;
3676 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3677 if (is_error(trans)) {
3678 ret = trans;
3679 goto fail;
3680 }
3681 }
3682 if (target_addr) {
3683 host_to_target_sockaddr(target_addr, addr,
3684 MIN(addrlen, ret_addrlen));
3685 if (put_user_u32(ret_addrlen, target_addrlen)) {
3686 ret = -TARGET_EFAULT;
3687 goto fail;
3688 }
3689 }
3690 unlock_user(host_msg, msg, len);
3691 } else {
3692 fail:
3693 unlock_user(host_msg, msg, 0);
3694 }
3695 return ret;
3696 }
3697
3698 #ifdef TARGET_NR_socketcall
3699 /* do_socketcall() must return target values and target errnos. */
3700 static abi_long do_socketcall(int num, abi_ulong vptr)
3701 {
3702 static const unsigned nargs[] = { /* number of arguments per operation */
3703 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3704 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3705 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3706 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3707 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3708 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3709 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3710 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3711 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3712 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3713 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3714 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3715 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3716 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3717 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3718 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3719 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3720 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3721 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3722 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3723 };
3724 abi_long a[6]; /* max 6 args */
3725 unsigned i;
3726
3727 /* check the range of the first argument num */
3728 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3729 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3730 return -TARGET_EINVAL;
3731 }
3732 /* ensure we have space for args */
3733 if (nargs[num] > ARRAY_SIZE(a)) {
3734 return -TARGET_EINVAL;
3735 }
3736 /* collect the arguments in a[] according to nargs[] */
3737 for (i = 0; i < nargs[num]; ++i) {
3738 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3739 return -TARGET_EFAULT;
3740 }
3741 }
3742 /* now when we have the args, invoke the appropriate underlying function */
3743 switch (num) {
3744 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3745 return do_socket(a[0], a[1], a[2]);
3746 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3747 return do_bind(a[0], a[1], a[2]);
3748 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3749 return do_connect(a[0], a[1], a[2]);
3750 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3751 return get_errno(listen(a[0], a[1]));
3752 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3753 return do_accept4(a[0], a[1], a[2], 0);
3754 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3755 return do_getsockname(a[0], a[1], a[2]);
3756 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3757 return do_getpeername(a[0], a[1], a[2]);
3758 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3759 return do_socketpair(a[0], a[1], a[2], a[3]);
3760 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3761 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3762 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3763 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3764 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3765 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3766 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3767 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3768 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3769 return get_errno(shutdown(a[0], a[1]));
3770 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3771 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3772 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3773 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3774 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3775 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3776 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3777 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3778 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3779 return do_accept4(a[0], a[1], a[2], a[3]);
3780 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3781 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3782 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3783 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3784 default:
3785 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
3786 return -TARGET_EINVAL;
3787 }
3788 }
3789 #endif
3790
3791 #define N_SHM_REGIONS 32
3792
3793 static struct shm_region {
3794 abi_ulong start;
3795 abi_ulong size;
3796 bool in_use;
3797 } shm_regions[N_SHM_REGIONS];
3798
3799 #ifndef TARGET_SEMID64_DS
3800 /* asm-generic version of this struct */
3801 struct target_semid64_ds
3802 {
3803 struct target_ipc_perm sem_perm;
3804 abi_ulong sem_otime;
3805 #if TARGET_ABI_BITS == 32
3806 abi_ulong __unused1;
3807 #endif
3808 abi_ulong sem_ctime;
3809 #if TARGET_ABI_BITS == 32
3810 abi_ulong __unused2;
3811 #endif
3812 abi_ulong sem_nsems;
3813 abi_ulong __unused3;
3814 abi_ulong __unused4;
3815 };
3816 #endif
3817
3818 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3819 abi_ulong target_addr)
3820 {
3821 struct target_ipc_perm *target_ip;
3822 struct target_semid64_ds *target_sd;
3823
3824 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3825 return -TARGET_EFAULT;
3826 target_ip = &(target_sd->sem_perm);
3827 host_ip->__key = tswap32(target_ip->__key);
3828 host_ip->uid = tswap32(target_ip->uid);
3829 host_ip->gid = tswap32(target_ip->gid);
3830 host_ip->cuid = tswap32(target_ip->cuid);
3831 host_ip->cgid = tswap32(target_ip->cgid);
3832 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3833 host_ip->mode = tswap32(target_ip->mode);
3834 #else
3835 host_ip->mode = tswap16(target_ip->mode);
3836 #endif
3837 #if defined(TARGET_PPC)
3838 host_ip->__seq = tswap32(target_ip->__seq);
3839 #else
3840 host_ip->__seq = tswap16(target_ip->__seq);
3841 #endif
3842 unlock_user_struct(target_sd, target_addr, 0);
3843 return 0;
3844 }
3845
3846 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3847 struct ipc_perm *host_ip)
3848 {
3849 struct target_ipc_perm *target_ip;
3850 struct target_semid64_ds *target_sd;
3851
3852 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3853 return -TARGET_EFAULT;
3854 target_ip = &(target_sd->sem_perm);
3855 target_ip->__key = tswap32(host_ip->__key);
3856 target_ip->uid = tswap32(host_ip->uid);
3857 target_ip->gid = tswap32(host_ip->gid);
3858 target_ip->cuid = tswap32(host_ip->cuid);
3859 target_ip->cgid = tswap32(host_ip->cgid);
3860 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3861 target_ip->mode = tswap32(host_ip->mode);
3862 #else
3863 target_ip->mode = tswap16(host_ip->mode);
3864 #endif
3865 #if defined(TARGET_PPC)
3866 target_ip->__seq = tswap32(host_ip->__seq);
3867 #else
3868 target_ip->__seq = tswap16(host_ip->__seq);
3869 #endif
3870 unlock_user_struct(target_sd, target_addr, 1);
3871 return 0;
3872 }
3873
3874 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3875 abi_ulong target_addr)
3876 {
3877 struct target_semid64_ds *target_sd;
3878
3879 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3880 return -TARGET_EFAULT;
3881 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3882 return -TARGET_EFAULT;
3883 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3884 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3885 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3886 unlock_user_struct(target_sd, target_addr, 0);
3887 return 0;
3888 }
3889
3890 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3891 struct semid_ds *host_sd)
3892 {
3893 struct target_semid64_ds *target_sd;
3894
3895 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3896 return -TARGET_EFAULT;
3897 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3898 return -TARGET_EFAULT;
3899 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3900 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3901 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3902 unlock_user_struct(target_sd, target_addr, 1);
3903 return 0;
3904 }
3905
3906 struct target_seminfo {
3907 int semmap;
3908 int semmni;
3909 int semmns;
3910 int semmnu;
3911 int semmsl;
3912 int semopm;
3913 int semume;
3914 int semusz;
3915 int semvmx;
3916 int semaem;
3917 };
3918
3919 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3920 struct seminfo *host_seminfo)
3921 {
3922 struct target_seminfo *target_seminfo;
3923 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3924 return -TARGET_EFAULT;
3925 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3926 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3927 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3928 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3929 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3930 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3931 __put_user(host_seminfo->semume, &target_seminfo->semume);
3932 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3933 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3934 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3935 unlock_user_struct(target_seminfo, target_addr, 1);
3936 return 0;
3937 }
3938
3939 union semun {
3940 int val;
3941 struct semid_ds *buf;
3942 unsigned short *array;
3943 struct seminfo *__buf;
3944 };
3945
3946 union target_semun {
3947 int val;
3948 abi_ulong buf;
3949 abi_ulong array;
3950 abi_ulong __buf;
3951 };
3952
3953 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3954 abi_ulong target_addr)
3955 {
3956 int nsems;
3957 unsigned short *array;
3958 union semun semun;
3959 struct semid_ds semid_ds;
3960 int i, ret;
3961
3962 semun.buf = &semid_ds;
3963
3964 ret = semctl(semid, 0, IPC_STAT, semun);
3965 if (ret == -1)
3966 return get_errno(ret);
3967
3968 nsems = semid_ds.sem_nsems;
3969
3970 *host_array = g_try_new(unsigned short, nsems);
3971 if (!*host_array) {
3972 return -TARGET_ENOMEM;
3973 }
3974 array = lock_user(VERIFY_READ, target_addr,
3975 nsems*sizeof(unsigned short), 1);
3976 if (!array) {
3977 g_free(*host_array);
3978 return -TARGET_EFAULT;
3979 }
3980
3981 for(i=0; i<nsems; i++) {
3982 __get_user((*host_array)[i], &array[i]);
3983 }
3984 unlock_user(array, target_addr, 0);
3985
3986 return 0;
3987 }
3988
3989 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3990 unsigned short **host_array)
3991 {
3992 int nsems;
3993 unsigned short *array;
3994 union semun semun;
3995 struct semid_ds semid_ds;
3996 int i, ret;
3997
3998 semun.buf = &semid_ds;
3999
4000 ret = semctl(semid, 0, IPC_STAT, semun);
4001 if (ret == -1)
4002 return get_errno(ret);
4003
4004 nsems = semid_ds.sem_nsems;
4005
4006 array = lock_user(VERIFY_WRITE, target_addr,
4007 nsems*sizeof(unsigned short), 0);
4008 if (!array)
4009 return -TARGET_EFAULT;
4010
4011 for(i=0; i<nsems; i++) {
4012 __put_user((*host_array)[i], &array[i]);
4013 }
4014 g_free(*host_array);
4015 unlock_user(array, target_addr, 1);
4016
4017 return 0;
4018 }
4019
4020 static inline abi_long do_semctl(int semid, int semnum, int cmd,
4021 abi_ulong target_arg)
4022 {
4023 union target_semun target_su = { .buf = target_arg };
4024 union semun arg;
4025 struct semid_ds dsarg;
4026 unsigned short *array = NULL;
4027 struct seminfo seminfo;
4028 abi_long ret = -TARGET_EINVAL;
4029 abi_long err;
4030 cmd &= 0xff;
4031
4032 switch( cmd ) {
4033 case GETVAL:
4034 case SETVAL:
4035 /* In 64 bit cross-endian situations, we will erroneously pick up
4036 * the wrong half of the union for the "val" element. To rectify
4037 * this, the entire 8-byte structure is byteswapped, followed by
4038 * a swap of the 4 byte val field. In other cases, the data is
4039 * already in proper host byte order. */
4040 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
4041 target_su.buf = tswapal(target_su.buf);
4042 arg.val = tswap32(target_su.val);
4043 } else {
4044 arg.val = target_su.val;
4045 }
4046 ret = get_errno(semctl(semid, semnum, cmd, arg));
4047 break;
4048 case GETALL:
4049 case SETALL:
4050 err = target_to_host_semarray(semid, &array, target_su.array);
4051 if (err)
4052 return err;
4053 arg.array = array;
4054 ret = get_errno(semctl(semid, semnum, cmd, arg));
4055 err = host_to_target_semarray(semid, target_su.array, &array);
4056 if (err)
4057 return err;
4058 break;
4059 case IPC_STAT:
4060 case IPC_SET:
4061 case SEM_STAT:
4062 err = target_to_host_semid_ds(&dsarg, target_su.buf);
4063 if (err)
4064 return err;
4065 arg.buf = &dsarg;
4066 ret = get_errno(semctl(semid, semnum, cmd, arg));
4067 err = host_to_target_semid_ds(target_su.buf, &dsarg);
4068 if (err)
4069 return err;
4070 break;
4071 case IPC_INFO:
4072 case SEM_INFO:
4073 arg.__buf = &seminfo;
4074 ret = get_errno(semctl(semid, semnum, cmd, arg));
4075 err = host_to_target_seminfo(target_su.__buf, &seminfo);
4076 if (err)
4077 return err;
4078 break;
4079 case IPC_RMID:
4080 case GETPID:
4081 case GETNCNT:
4082 case GETZCNT:
4083 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4084 break;
4085 }
4086
4087 return ret;
4088 }
4089
4090 struct target_sembuf {
4091 unsigned short sem_num;
4092 short sem_op;
4093 short sem_flg;
4094 };
4095
4096 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4097 abi_ulong target_addr,
4098 unsigned nsops)
4099 {
4100 struct target_sembuf *target_sembuf;
4101 int i;
4102
4103 target_sembuf = lock_user(VERIFY_READ, target_addr,
4104 nsops*sizeof(struct target_sembuf), 1);
4105 if (!target_sembuf)
4106 return -TARGET_EFAULT;
4107
4108 for(i=0; i<nsops; i++) {
4109 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4110 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4111 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4112 }
4113
4114 unlock_user(target_sembuf, target_addr, 0);
4115
4116 return 0;
4117 }
4118
4119 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \
4120 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64)
4121
4122 /*
4123 * This macro is required to handle the s390 variants, which passes the
4124 * arguments in a different order than default.
4125 */
4126 #ifdef __s390x__
4127 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4128 (__nsops), (__timeout), (__sops)
4129 #else
4130 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4131 (__nsops), 0, (__sops), (__timeout)
4132 #endif
4133
4134 static inline abi_long do_semtimedop(int semid,
4135 abi_long ptr,
4136 unsigned nsops,
4137 abi_long timeout, bool time64)
4138 {
4139 struct sembuf *sops;
4140 struct timespec ts, *pts = NULL;
4141 abi_long ret;
4142
4143 if (timeout) {
4144 pts = &ts;
4145 if (time64) {
4146 if (target_to_host_timespec64(pts, timeout)) {
4147 return -TARGET_EFAULT;
4148 }
4149 } else {
4150 if (target_to_host_timespec(pts, timeout)) {
4151 return -TARGET_EFAULT;
4152 }
4153 }
4154 }
4155
4156 if (nsops > TARGET_SEMOPM) {
4157 return -TARGET_E2BIG;
4158 }
4159
4160 sops = g_new(struct sembuf, nsops);
4161
4162 if (target_to_host_sembuf(sops, ptr, nsops)) {
4163 g_free(sops);
4164 return -TARGET_EFAULT;
4165 }
4166
4167 ret = -TARGET_ENOSYS;
4168 #ifdef __NR_semtimedop
4169 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
4170 #endif
4171 #ifdef __NR_ipc
4172 if (ret == -TARGET_ENOSYS) {
4173 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid,
4174 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts)));
4175 }
4176 #endif
4177 g_free(sops);
4178 return ret;
4179 }
4180 #endif
4181
4182 struct target_msqid_ds
4183 {
4184 struct target_ipc_perm msg_perm;
4185 abi_ulong msg_stime;
4186 #if TARGET_ABI_BITS == 32
4187 abi_ulong __unused1;
4188 #endif
4189 abi_ulong msg_rtime;
4190 #if TARGET_ABI_BITS == 32
4191 abi_ulong __unused2;
4192 #endif
4193 abi_ulong msg_ctime;
4194 #if TARGET_ABI_BITS == 32
4195 abi_ulong __unused3;
4196 #endif
4197 abi_ulong __msg_cbytes;
4198 abi_ulong msg_qnum;
4199 abi_ulong msg_qbytes;
4200 abi_ulong msg_lspid;
4201 abi_ulong msg_lrpid;
4202 abi_ulong __unused4;
4203 abi_ulong __unused5;
4204 };
4205
4206 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4207 abi_ulong target_addr)
4208 {
4209 struct target_msqid_ds *target_md;
4210
4211 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4212 return -TARGET_EFAULT;
4213 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4214 return -TARGET_EFAULT;
4215 host_md->msg_stime = tswapal(target_md->msg_stime);
4216 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4217 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4218 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4219 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4220 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4221 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4222 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4223 unlock_user_struct(target_md, target_addr, 0);
4224 return 0;
4225 }
4226
4227 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4228 struct msqid_ds *host_md)
4229 {
4230 struct target_msqid_ds *target_md;
4231
4232 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4233 return -TARGET_EFAULT;
4234 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4235 return -TARGET_EFAULT;
4236 target_md->msg_stime = tswapal(host_md->msg_stime);
4237 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4238 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4239 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4240 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4241 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4242 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4243 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4244 unlock_user_struct(target_md, target_addr, 1);
4245 return 0;
4246 }
4247
4248 struct target_msginfo {
4249 int msgpool;
4250 int msgmap;
4251 int msgmax;
4252 int msgmnb;
4253 int msgmni;
4254 int msgssz;
4255 int msgtql;
4256 unsigned short int msgseg;
4257 };
4258
4259 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4260 struct msginfo *host_msginfo)
4261 {
4262 struct target_msginfo *target_msginfo;
4263 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4264 return -TARGET_EFAULT;
4265 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4266 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4267 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4268 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4269 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4270 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4271 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4272 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4273 unlock_user_struct(target_msginfo, target_addr, 1);
4274 return 0;
4275 }
4276
4277 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4278 {
4279 struct msqid_ds dsarg;
4280 struct msginfo msginfo;
4281 abi_long ret = -TARGET_EINVAL;
4282
4283 cmd &= 0xff;
4284
4285 switch (cmd) {
4286 case IPC_STAT:
4287 case IPC_SET:
4288 case MSG_STAT:
4289 if (target_to_host_msqid_ds(&dsarg,ptr))
4290 return -TARGET_EFAULT;
4291 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4292 if (host_to_target_msqid_ds(ptr,&dsarg))
4293 return -TARGET_EFAULT;
4294 break;
4295 case IPC_RMID:
4296 ret = get_errno(msgctl(msgid, cmd, NULL));
4297 break;
4298 case IPC_INFO:
4299 case MSG_INFO:
4300 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4301 if (host_to_target_msginfo(ptr, &msginfo))
4302 return -TARGET_EFAULT;
4303 break;
4304 }
4305
4306 return ret;
4307 }
4308
4309 struct target_msgbuf {
4310 abi_long mtype;
4311 char mtext[1];
4312 };
4313
4314 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4315 ssize_t msgsz, int msgflg)
4316 {
4317 struct target_msgbuf *target_mb;
4318 struct msgbuf *host_mb;
4319 abi_long ret = 0;
4320
4321 if (msgsz < 0) {
4322 return -TARGET_EINVAL;
4323 }
4324
4325 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4326 return -TARGET_EFAULT;
4327 host_mb = g_try_malloc(msgsz + sizeof(long));
4328 if (!host_mb) {
4329 unlock_user_struct(target_mb, msgp, 0);
4330 return -TARGET_ENOMEM;
4331 }
4332 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4333 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4334 ret = -TARGET_ENOSYS;
4335 #ifdef __NR_msgsnd
4336 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4337 #endif
4338 #ifdef __NR_ipc
4339 if (ret == -TARGET_ENOSYS) {
4340 #ifdef __s390x__
4341 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4342 host_mb));
4343 #else
4344 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4345 host_mb, 0));
4346 #endif
4347 }
4348 #endif
4349 g_free(host_mb);
4350 unlock_user_struct(target_mb, msgp, 0);
4351
4352 return ret;
4353 }
4354
4355 #ifdef __NR_ipc
4356 #if defined(__sparc__)
4357 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */
4358 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp
4359 #elif defined(__s390x__)
4360 /* The s390 sys_ipc variant has only five parameters. */
4361 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4362 ((long int[]){(long int)__msgp, __msgtyp})
4363 #else
4364 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4365 ((long int[]){(long int)__msgp, __msgtyp}), 0
4366 #endif
4367 #endif
4368
4369 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4370 ssize_t msgsz, abi_long msgtyp,
4371 int msgflg)
4372 {
4373 struct target_msgbuf *target_mb;
4374 char *target_mtext;
4375 struct msgbuf *host_mb;
4376 abi_long ret = 0;
4377
4378 if (msgsz < 0) {
4379 return -TARGET_EINVAL;
4380 }
4381
4382 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4383 return -TARGET_EFAULT;
4384
4385 host_mb = g_try_malloc(msgsz + sizeof(long));
4386 if (!host_mb) {
4387 ret = -TARGET_ENOMEM;
4388 goto end;
4389 }
4390 ret = -TARGET_ENOSYS;
4391 #ifdef __NR_msgrcv
4392 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4393 #endif
4394 #ifdef __NR_ipc
4395 if (ret == -TARGET_ENOSYS) {
4396 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
4397 msgflg, MSGRCV_ARGS(host_mb, msgtyp)));
4398 }
4399 #endif
4400
4401 if (ret > 0) {
4402 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4403 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4404 if (!target_mtext) {
4405 ret = -TARGET_EFAULT;
4406 goto end;
4407 }
4408 memcpy(target_mb->mtext, host_mb->mtext, ret);
4409 unlock_user(target_mtext, target_mtext_addr, ret);
4410 }
4411
4412 target_mb->mtype = tswapal(host_mb->mtype);
4413
4414 end:
4415 if (target_mb)
4416 unlock_user_struct(target_mb, msgp, 1);
4417 g_free(host_mb);
4418 return ret;
4419 }
4420
4421 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4422 abi_ulong target_addr)
4423 {
4424 struct target_shmid_ds *target_sd;
4425
4426 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4427 return -TARGET_EFAULT;
4428 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4429 return -TARGET_EFAULT;
4430 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4431 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4432 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4433 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4434 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4435 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4436 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4437 unlock_user_struct(target_sd, target_addr, 0);
4438 return 0;
4439 }
4440
4441 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4442 struct shmid_ds *host_sd)
4443 {
4444 struct target_shmid_ds *target_sd;
4445
4446 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4447 return -TARGET_EFAULT;
4448 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4449 return -TARGET_EFAULT;
4450 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4451 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4452 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4453 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4454 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4455 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4456 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4457 unlock_user_struct(target_sd, target_addr, 1);
4458 return 0;
4459 }
4460
4461 struct target_shminfo {
4462 abi_ulong shmmax;
4463 abi_ulong shmmin;
4464 abi_ulong shmmni;
4465 abi_ulong shmseg;
4466 abi_ulong shmall;
4467 };
4468
4469 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4470 struct shminfo *host_shminfo)
4471 {
4472 struct target_shminfo *target_shminfo;
4473 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4474 return -TARGET_EFAULT;
4475 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4476 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4477 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4478 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4479 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4480 unlock_user_struct(target_shminfo, target_addr, 1);
4481 return 0;
4482 }
4483
4484 struct target_shm_info {
4485 int used_ids;
4486 abi_ulong shm_tot;
4487 abi_ulong shm_rss;
4488 abi_ulong shm_swp;
4489 abi_ulong swap_attempts;
4490 abi_ulong swap_successes;
4491 };
4492
4493 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4494 struct shm_info *host_shm_info)
4495 {
4496 struct target_shm_info *target_shm_info;
4497 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4498 return -TARGET_EFAULT;
4499 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4500 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4501 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4502 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4503 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4504 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4505 unlock_user_struct(target_shm_info, target_addr, 1);
4506 return 0;
4507 }
4508
4509 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4510 {
4511 struct shmid_ds dsarg;
4512 struct shminfo shminfo;
4513 struct shm_info shm_info;
4514 abi_long ret = -TARGET_EINVAL;
4515
4516 cmd &= 0xff;
4517
4518 switch(cmd) {
4519 case IPC_STAT:
4520 case IPC_SET:
4521 case SHM_STAT:
4522 if (target_to_host_shmid_ds(&dsarg, buf))
4523 return -TARGET_EFAULT;
4524 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4525 if (host_to_target_shmid_ds(buf, &dsarg))
4526 return -TARGET_EFAULT;
4527 break;
4528 case IPC_INFO:
4529 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4530 if (host_to_target_shminfo(buf, &shminfo))
4531 return -TARGET_EFAULT;
4532 break;
4533 case SHM_INFO:
4534 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4535 if (host_to_target_shm_info(buf, &shm_info))
4536 return -TARGET_EFAULT;
4537 break;
4538 case IPC_RMID:
4539 case SHM_LOCK:
4540 case SHM_UNLOCK:
4541 ret = get_errno(shmctl(shmid, cmd, NULL));
4542 break;
4543 }
4544
4545 return ret;
4546 }
4547
4548 #ifndef TARGET_FORCE_SHMLBA
4549 /* For most architectures, SHMLBA is the same as the page size;
4550 * some architectures have larger values, in which case they should
4551 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4552 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4553 * and defining its own value for SHMLBA.
4554 *
4555 * The kernel also permits SHMLBA to be set by the architecture to a
4556 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4557 * this means that addresses are rounded to the large size if
4558 * SHM_RND is set but addresses not aligned to that size are not rejected
4559 * as long as they are at least page-aligned. Since the only architecture
4560 * which uses this is ia64 this code doesn't provide for that oddity.
4561 */
4562 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4563 {
4564 return TARGET_PAGE_SIZE;
4565 }
4566 #endif
4567
4568 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4569 int shmid, abi_ulong shmaddr, int shmflg)
4570 {
4571 abi_long raddr;
4572 void *host_raddr;
4573 struct shmid_ds shm_info;
4574 int i,ret;
4575 abi_ulong shmlba;
4576
4577 /* find out the length of the shared memory segment */
4578 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4579 if (is_error(ret)) {
4580 /* can't get length, bail out */
4581 return ret;
4582 }
4583
4584 shmlba = target_shmlba(cpu_env);
4585
4586 if (shmaddr & (shmlba - 1)) {
4587 if (shmflg & SHM_RND) {
4588 shmaddr &= ~(shmlba - 1);
4589 } else {
4590 return -TARGET_EINVAL;
4591 }
4592 }
4593 if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) {
4594 return -TARGET_EINVAL;
4595 }
4596
4597 mmap_lock();
4598
4599 if (shmaddr)
4600 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
4601 else {
4602 abi_ulong mmap_start;
4603
4604 /* In order to use the host shmat, we need to honor host SHMLBA. */
4605 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
4606
4607 if (mmap_start == -1) {
4608 errno = ENOMEM;
4609 host_raddr = (void *)-1;
4610 } else
4611 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
4612 }
4613
4614 if (host_raddr == (void *)-1) {
4615 mmap_unlock();
4616 return get_errno((long)host_raddr);
4617 }
4618 raddr=h2g((unsigned long)host_raddr);
4619
4620 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4621 PAGE_VALID | PAGE_READ |
4622 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
4623
4624 for (i = 0; i < N_SHM_REGIONS; i++) {
4625 if (!shm_regions[i].in_use) {
4626 shm_regions[i].in_use = true;
4627 shm_regions[i].start = raddr;
4628 shm_regions[i].size = shm_info.shm_segsz;
4629 break;
4630 }
4631 }
4632
4633 mmap_unlock();
4634 return raddr;
4635
4636 }
4637
4638 static inline abi_long do_shmdt(abi_ulong shmaddr)
4639 {
4640 int i;
4641 abi_long rv;
4642
4643 mmap_lock();
4644
4645 for (i = 0; i < N_SHM_REGIONS; ++i) {
4646 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4647 shm_regions[i].in_use = false;
4648 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4649 break;
4650 }
4651 }
4652 rv = get_errno(shmdt(g2h(shmaddr)));
4653
4654 mmap_unlock();
4655
4656 return rv;
4657 }
4658
4659 #ifdef TARGET_NR_ipc
4660 /* ??? This only works with linear mappings. */
4661 /* do_ipc() must return target values and target errnos. */
4662 static abi_long do_ipc(CPUArchState *cpu_env,
4663 unsigned int call, abi_long first,
4664 abi_long second, abi_long third,
4665 abi_long ptr, abi_long fifth)
4666 {
4667 int version;
4668 abi_long ret = 0;
4669
4670 version = call >> 16;
4671 call &= 0xffff;
4672
4673 switch (call) {
4674 case IPCOP_semop:
4675 ret = do_semtimedop(first, ptr, second, 0, false);
4676 break;
4677 case IPCOP_semtimedop:
4678 /*
4679 * The s390 sys_ipc variant has only five parameters instead of six
4680 * (as for default variant) and the only difference is the handling of
4681 * SEMTIMEDOP where on s390 the third parameter is used as a pointer
4682 * to a struct timespec where the generic variant uses fifth parameter.
4683 */
4684 #if defined(TARGET_S390X)
4685 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64);
4686 #else
4687 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64);
4688 #endif
4689 break;
4690
4691 case IPCOP_semget:
4692 ret = get_errno(semget(first, second, third));
4693 break;
4694
4695 case IPCOP_semctl: {
4696 /* The semun argument to semctl is passed by value, so dereference the
4697 * ptr argument. */
4698 abi_ulong atptr;
4699 get_user_ual(atptr, ptr);
4700 ret = do_semctl(first, second, third, atptr);
4701 break;
4702 }
4703
4704 case IPCOP_msgget:
4705 ret = get_errno(msgget(first, second));
4706 break;
4707
4708 case IPCOP_msgsnd:
4709 ret = do_msgsnd(first, ptr, second, third);
4710 break;
4711
4712 case IPCOP_msgctl:
4713 ret = do_msgctl(first, second, ptr);
4714 break;
4715
4716 case IPCOP_msgrcv:
4717 switch (version) {
4718 case 0:
4719 {
4720 struct target_ipc_kludge {
4721 abi_long msgp;
4722 abi_long msgtyp;
4723 } *tmp;
4724
4725 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4726 ret = -TARGET_EFAULT;
4727 break;
4728 }
4729
4730 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4731
4732 unlock_user_struct(tmp, ptr, 0);
4733 break;
4734 }
4735 default:
4736 ret = do_msgrcv(first, ptr, second, fifth, third);
4737 }
4738 break;
4739
4740 case IPCOP_shmat:
4741 switch (version) {
4742 default:
4743 {
4744 abi_ulong raddr;
4745 raddr = do_shmat(cpu_env, first, ptr, second);
4746 if (is_error(raddr))
4747 return get_errno(raddr);
4748 if (put_user_ual(raddr, third))
4749 return -TARGET_EFAULT;
4750 break;
4751 }
4752 case 1:
4753 ret = -TARGET_EINVAL;
4754 break;
4755 }
4756 break;
4757 case IPCOP_shmdt:
4758 ret = do_shmdt(ptr);
4759 break;
4760
4761 case IPCOP_shmget:
4762 /* IPC_* flag values are the same on all linux platforms */
4763 ret = get_errno(shmget(first, second, third));
4764 break;
4765
4766 /* IPC_* and SHM_* command values are the same on all linux platforms */
4767 case IPCOP_shmctl:
4768 ret = do_shmctl(first, second, ptr);
4769 break;
4770 default:
4771 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
4772 call, version);
4773 ret = -TARGET_ENOSYS;
4774 break;
4775 }
4776 return ret;
4777 }
4778 #endif
4779
4780 /* kernel structure types definitions */
4781
4782 #define STRUCT(name, ...) STRUCT_ ## name,
4783 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4784 enum {
4785 #include "syscall_types.h"
4786 STRUCT_MAX
4787 };
4788 #undef STRUCT
4789 #undef STRUCT_SPECIAL
4790
4791 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4792 #define STRUCT_SPECIAL(name)
4793 #include "syscall_types.h"
4794 #undef STRUCT
4795 #undef STRUCT_SPECIAL
4796
4797 #define MAX_STRUCT_SIZE 4096
4798
4799 #ifdef CONFIG_FIEMAP
4800 /* So fiemap access checks don't overflow on 32 bit systems.
4801 * This is very slightly smaller than the limit imposed by
4802 * the underlying kernel.
4803 */
4804 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4805 / sizeof(struct fiemap_extent))
4806
4807 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4808 int fd, int cmd, abi_long arg)
4809 {
4810 /* The parameter for this ioctl is a struct fiemap followed
4811 * by an array of struct fiemap_extent whose size is set
4812 * in fiemap->fm_extent_count. The array is filled in by the
4813 * ioctl.
4814 */
4815 int target_size_in, target_size_out;
4816 struct fiemap *fm;
4817 const argtype *arg_type = ie->arg_type;
4818 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4819 void *argptr, *p;
4820 abi_long ret;
4821 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4822 uint32_t outbufsz;
4823 int free_fm = 0;
4824
4825 assert(arg_type[0] == TYPE_PTR);
4826 assert(ie->access == IOC_RW);
4827 arg_type++;
4828 target_size_in = thunk_type_size(arg_type, 0);
4829 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4830 if (!argptr) {
4831 return -TARGET_EFAULT;
4832 }
4833 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4834 unlock_user(argptr, arg, 0);
4835 fm = (struct fiemap *)buf_temp;
4836 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4837 return -TARGET_EINVAL;
4838 }
4839
4840 outbufsz = sizeof (*fm) +
4841 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4842
4843 if (outbufsz > MAX_STRUCT_SIZE) {
4844 /* We can't fit all the extents into the fixed size buffer.
4845 * Allocate one that is large enough and use it instead.
4846 */
4847 fm = g_try_malloc(outbufsz);
4848 if (!fm) {
4849 return -TARGET_ENOMEM;
4850 }
4851 memcpy(fm, buf_temp, sizeof(struct fiemap));
4852 free_fm = 1;
4853 }
4854 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4855 if (!is_error(ret)) {
4856 target_size_out = target_size_in;
4857 /* An extent_count of 0 means we were only counting the extents
4858 * so there are no structs to copy
4859 */
4860 if (fm->fm_extent_count != 0) {
4861 target_size_out += fm->fm_mapped_extents * extent_size;
4862 }
4863 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4864 if (!argptr) {
4865 ret = -TARGET_EFAULT;
4866 } else {
4867 /* Convert the struct fiemap */
4868 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4869 if (fm->fm_extent_count != 0) {
4870 p = argptr + target_size_in;
4871 /* ...and then all the struct fiemap_extents */
4872 for (i = 0; i < fm->fm_mapped_extents; i++) {
4873 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4874 THUNK_TARGET);
4875 p += extent_size;
4876 }
4877 }
4878 unlock_user(argptr, arg, target_size_out);
4879 }
4880 }
4881 if (free_fm) {
4882 g_free(fm);
4883 }
4884 return ret;
4885 }
4886 #endif
4887
4888 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4889 int fd, int cmd, abi_long arg)
4890 {
4891 const argtype *arg_type = ie->arg_type;
4892 int target_size;
4893 void *argptr;
4894 int ret;
4895 struct ifconf *host_ifconf;
4896 uint32_t outbufsz;
4897 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4898 int target_ifreq_size;
4899 int nb_ifreq;
4900 int free_buf = 0;
4901 int i;
4902 int target_ifc_len;
4903 abi_long target_ifc_buf;
4904 int host_ifc_len;
4905 char *host_ifc_buf;
4906
4907 assert(arg_type[0] == TYPE_PTR);
4908 assert(ie->access == IOC_RW);
4909
4910 arg_type++;
4911 target_size = thunk_type_size(arg_type, 0);
4912
4913 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4914 if (!argptr)
4915 return -TARGET_EFAULT;
4916 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4917 unlock_user(argptr, arg, 0);
4918
4919 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4920 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4921 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
4922
4923 if (target_ifc_buf != 0) {
4924 target_ifc_len = host_ifconf->ifc_len;
4925 nb_ifreq = target_ifc_len / target_ifreq_size;
4926 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4927
4928 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4929 if (outbufsz > MAX_STRUCT_SIZE) {
4930 /*
4931 * We can't fit all the extents into the fixed size buffer.
4932 * Allocate one that is large enough and use it instead.
4933 */
4934 host_ifconf = malloc(outbufsz);
4935 if (!host_ifconf) {
4936 return -TARGET_ENOMEM;
4937 }
4938 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4939 free_buf = 1;
4940 }
4941 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4942
4943 host_ifconf->ifc_len = host_ifc_len;
4944 } else {
4945 host_ifc_buf = NULL;
4946 }
4947 host_ifconf->ifc_buf = host_ifc_buf;
4948
4949 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4950 if (!is_error(ret)) {
4951 /* convert host ifc_len to target ifc_len */
4952
4953 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4954 target_ifc_len = nb_ifreq * target_ifreq_size;
4955 host_ifconf->ifc_len = target_ifc_len;
4956
4957 /* restore target ifc_buf */
4958
4959 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4960
4961 /* copy struct ifconf to target user */
4962
4963 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4964 if (!argptr)
4965 return -TARGET_EFAULT;
4966 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4967 unlock_user(argptr, arg, target_size);
4968
4969 if (target_ifc_buf != 0) {
4970 /* copy ifreq[] to target user */
4971 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4972 for (i = 0; i < nb_ifreq ; i++) {
4973 thunk_convert(argptr + i * target_ifreq_size,
4974 host_ifc_buf + i * sizeof(struct ifreq),
4975 ifreq_arg_type, THUNK_TARGET);
4976 }
4977 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4978 }
4979 }
4980
4981 if (free_buf) {
4982 free(host_ifconf);
4983 }
4984
4985 return ret;
4986 }
4987
4988 #if defined(CONFIG_USBFS)
4989 #if HOST_LONG_BITS > 64
4990 #error USBDEVFS thunks do not support >64 bit hosts yet.
4991 #endif
4992 struct live_urb {
4993 uint64_t target_urb_adr;
4994 uint64_t target_buf_adr;
4995 char *target_buf_ptr;
4996 struct usbdevfs_urb host_urb;
4997 };
4998
4999 static GHashTable *usbdevfs_urb_hashtable(void)
5000 {
5001 static GHashTable *urb_hashtable;
5002
5003 if (!urb_hashtable) {
5004 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
5005 }
5006 return urb_hashtable;
5007 }
5008
5009 static void urb_hashtable_insert(struct live_urb *urb)
5010 {
5011 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
5012 g_hash_table_insert(urb_hashtable, urb, urb);
5013 }
5014
5015 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
5016 {
5017 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
5018 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
5019 }
5020
5021 static void urb_hashtable_remove(struct live_urb *urb)
5022 {
5023 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
5024 g_hash_table_remove(urb_hashtable, urb);
5025 }
5026
5027 static abi_long
5028 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
5029 int fd, int cmd, abi_long arg)
5030 {
5031 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
5032 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
5033 struct live_urb *lurb;
5034 void *argptr;
5035 uint64_t hurb;
5036 int target_size;
5037 uintptr_t target_urb_adr;
5038 abi_long ret;
5039
5040 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
5041
5042 memset(buf_temp, 0, sizeof(uint64_t));
5043 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5044 if (is_error(ret)) {
5045 return ret;
5046 }
5047
5048 memcpy(&hurb, buf_temp, sizeof(uint64_t));
5049 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
5050 if (!lurb->target_urb_adr) {
5051 return -TARGET_EFAULT;
5052 }
5053 urb_hashtable_remove(lurb);
5054 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
5055 lurb->host_urb.buffer_length);
5056 lurb->target_buf_ptr = NULL;
5057
5058 /* restore the guest buffer pointer */
5059 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
5060
5061 /* update the guest urb struct */
5062 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
5063 if (!argptr) {
5064 g_free(lurb);
5065 return -TARGET_EFAULT;
5066 }
5067 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
5068 unlock_user(argptr, lurb->target_urb_adr, target_size);
5069
5070 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
5071 /* write back the urb handle */
5072 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5073 if (!argptr) {
5074 g_free(lurb);
5075 return -TARGET_EFAULT;
5076 }
5077
5078 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
5079 target_urb_adr = lurb->target_urb_adr;
5080 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
5081 unlock_user(argptr, arg, target_size);
5082
5083 g_free(lurb);
5084 return ret;
5085 }
5086
5087 static abi_long
5088 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
5089 uint8_t *buf_temp __attribute__((unused)),
5090 int fd, int cmd, abi_long arg)
5091 {
5092 struct live_urb *lurb;
5093
5094 /* map target address back to host URB with metadata. */
5095 lurb = urb_hashtable_lookup(arg);
5096 if (!lurb) {
5097 return -TARGET_EFAULT;
5098 }
5099 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5100 }
5101
5102 static abi_long
5103 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
5104 int fd, int cmd, abi_long arg)
5105 {
5106 const argtype *arg_type = ie->arg_type;
5107 int target_size;
5108 abi_long ret;
5109 void *argptr;
5110 int rw_dir;
5111 struct live_urb *lurb;
5112
5113 /*
5114 * each submitted URB needs to map to a unique ID for the
5115 * kernel, and that unique ID needs to be a pointer to
5116 * host memory. hence, we need to malloc for each URB.
5117 * isochronous transfers have a variable length struct.
5118 */
5119 arg_type++;
5120 target_size = thunk_type_size(arg_type, THUNK_TARGET);
5121
5122 /* construct host copy of urb and metadata */
5123 lurb = g_try_malloc0(sizeof(struct live_urb));
5124 if (!lurb) {
5125 return -TARGET_ENOMEM;
5126 }
5127
5128 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5129 if (!argptr) {
5130 g_free(lurb);
5131 return -TARGET_EFAULT;
5132 }
5133 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
5134 unlock_user(argptr, arg, 0);
5135
5136 lurb->target_urb_adr = arg;
5137 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
5138
5139 /* buffer space used depends on endpoint type so lock the entire buffer */
5140 /* control type urbs should check the buffer contents for true direction */
5141 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
5142 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
5143 lurb->host_urb.buffer_length, 1);
5144 if (lurb->target_buf_ptr == NULL) {
5145 g_free(lurb);
5146 return -TARGET_EFAULT;
5147 }
5148
5149 /* update buffer pointer in host copy */
5150 lurb->host_urb.buffer = lurb->target_buf_ptr;
5151
5152 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5153 if (is_error(ret)) {
5154 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
5155 g_free(lurb);
5156 } else {
5157 urb_hashtable_insert(lurb);
5158 }
5159
5160 return ret;
5161 }
5162 #endif /* CONFIG_USBFS */
5163
5164 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5165 int cmd, abi_long arg)
5166 {
5167 void *argptr;
5168 struct dm_ioctl *host_dm;
5169 abi_long guest_data;
5170 uint32_t guest_data_size;
5171 int target_size;
5172 const argtype *arg_type = ie->arg_type;
5173 abi_long ret;
5174 void *big_buf = NULL;
5175 char *host_data;
5176
5177 arg_type++;
5178 target_size = thunk_type_size(arg_type, 0);
5179 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5180 if (!argptr) {
5181 ret = -TARGET_EFAULT;
5182 goto out;
5183 }
5184 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5185 unlock_user(argptr, arg, 0);
5186
5187 /* buf_temp is too small, so fetch things into a bigger buffer */
5188 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5189 memcpy(big_buf, buf_temp, target_size);
5190 buf_temp = big_buf;
5191 host_dm = big_buf;
5192
5193 guest_data = arg + host_dm->data_start;
5194 if ((guest_data - arg) < 0) {
5195 ret = -TARGET_EINVAL;
5196 goto out;
5197 }
5198 guest_data_size = host_dm->data_size - host_dm->data_start;
5199 host_data = (char*)host_dm + host_dm->data_start;
5200
5201 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5202 if (!argptr) {
5203 ret = -TARGET_EFAULT;
5204 goto out;
5205 }
5206
5207 switch (ie->host_cmd) {
5208 case DM_REMOVE_ALL:
5209 case DM_LIST_DEVICES:
5210 case DM_DEV_CREATE:
5211 case DM_DEV_REMOVE:
5212 case DM_DEV_SUSPEND:
5213 case DM_DEV_STATUS:
5214 case DM_DEV_WAIT:
5215 case DM_TABLE_STATUS:
5216 case DM_TABLE_CLEAR:
5217 case DM_TABLE_DEPS:
5218 case DM_LIST_VERSIONS:
5219 /* no input data */
5220 break;
5221 case DM_DEV_RENAME:
5222 case DM_DEV_SET_GEOMETRY:
5223 /* data contains only strings */
5224 memcpy(host_data, argptr, guest_data_size);
5225 break;
5226 case DM_TARGET_MSG:
5227 memcpy(host_data, argptr, guest_data_size);
5228 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5229 break;
5230 case DM_TABLE_LOAD:
5231 {
5232 void *gspec = argptr;
5233 void *cur_data = host_data;
5234 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5235 int spec_size = thunk_type_size(arg_type, 0);
5236 int i;
5237
5238 for (i = 0; i < host_dm->target_count; i++) {
5239 struct dm_target_spec *spec = cur_data;
5240 uint32_t next;
5241 int slen;
5242
5243 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
5244 slen = strlen((char*)gspec + spec_size) + 1;
5245 next = spec->next;
5246 spec->next = sizeof(*spec) + slen;
5247 strcpy((char*)&spec[1], gspec + spec_size);
5248 gspec += next;
5249 cur_data += spec->next;
5250 }
5251 break;
5252 }
5253 default:
5254 ret = -TARGET_EINVAL;
5255 unlock_user(argptr, guest_data, 0);
5256 goto out;
5257 }
5258 unlock_user(argptr, guest_data, 0);
5259
5260 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5261 if (!is_error(ret)) {
5262 guest_data = arg + host_dm->data_start;
5263 guest_data_size = host_dm->data_size - host_dm->data_start;
5264 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5265 switch (ie->host_cmd) {
5266 case DM_REMOVE_ALL:
5267 case DM_DEV_CREATE:
5268 case DM_DEV_REMOVE:
5269 case DM_DEV_RENAME:
5270 case DM_DEV_SUSPEND:
5271 case DM_DEV_STATUS:
5272 case DM_TABLE_LOAD:
5273 case DM_TABLE_CLEAR:
5274 case DM_TARGET_MSG:
5275 case DM_DEV_SET_GEOMETRY:
5276 /* no return data */
5277 break;
5278 case DM_LIST_DEVICES:
5279 {
5280 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5281 uint32_t remaining_data = guest_data_size;
5282 void *cur_data = argptr;
5283 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5284 int nl_size = 12; /* can't use thunk_size due to alignment */
5285
5286 while (1) {
5287 uint32_t next = nl->next;
5288 if (next) {
5289 nl->next = nl_size + (strlen(nl->name) + 1);
5290 }
5291 if (remaining_data < nl->next) {
5292 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5293 break;
5294 }
5295 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
5296 strcpy(cur_data + nl_size, nl->name);
5297 cur_data += nl->next;
5298 remaining_data -= nl->next;
5299 if (!next) {
5300 break;
5301 }
5302 nl = (void*)nl + next;
5303 }
5304 break;
5305 }
5306 case DM_DEV_WAIT:
5307 case DM_TABLE_STATUS:
5308 {
5309 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5310 void *cur_data = argptr;
5311 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5312 int spec_size = thunk_type_size(arg_type, 0);
5313 int i;
5314
5315 for (i = 0; i < host_dm->target_count; i++) {
5316 uint32_t next = spec->next;
5317 int slen = strlen((char*)&spec[1]) + 1;
5318 spec->next = (cur_data - argptr) + spec_size + slen;
5319 if (guest_data_size < spec->next) {
5320 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5321 break;
5322 }
5323 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5324 strcpy(cur_data + spec_size, (char*)&spec[1]);
5325 cur_data = argptr + spec->next;
5326 spec = (void*)host_dm + host_dm->data_start + next;
5327 }
5328 break;
5329 }
5330 case DM_TABLE_DEPS:
5331 {
5332 void *hdata = (void*)host_dm + host_dm->data_start;
5333 int count = *(uint32_t*)hdata;
5334 uint64_t *hdev = hdata + 8;
5335 uint64_t *gdev = argptr + 8;
5336 int i;
5337
5338 *(uint32_t*)argptr = tswap32(count);
5339 for (i = 0; i < count; i++) {
5340 *gdev = tswap64(*hdev);
5341 gdev++;
5342 hdev++;
5343 }
5344 break;
5345 }
5346 case DM_LIST_VERSIONS:
5347 {
5348 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5349 uint32_t remaining_data = guest_data_size;
5350 void *cur_data = argptr;
5351 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5352 int vers_size = thunk_type_size(arg_type, 0);
5353
5354 while (1) {
5355 uint32_t next = vers->next;
5356 if (next) {
5357 vers->next = vers_size + (strlen(vers->name) + 1);
5358 }
5359 if (remaining_data < vers->next) {
5360 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5361 break;
5362 }
5363 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5364 strcpy(cur_data + vers_size, vers->name);
5365 cur_data += vers->next;
5366 remaining_data -= vers->next;
5367 if (!next) {
5368 break;
5369 }
5370 vers = (void*)vers + next;
5371 }
5372 break;
5373 }
5374 default:
5375 unlock_user(argptr, guest_data, 0);
5376 ret = -TARGET_EINVAL;
5377 goto out;
5378 }
5379 unlock_user(argptr, guest_data, guest_data_size);
5380
5381 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5382 if (!argptr) {
5383 ret = -TARGET_EFAULT;
5384 goto out;
5385 }
5386 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5387 unlock_user(argptr, arg, target_size);
5388 }
5389 out:
5390 g_free(big_buf);
5391 return ret;
5392 }
5393
5394 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5395 int cmd, abi_long arg)
5396 {
5397 void *argptr;
5398 int target_size;
5399 const argtype *arg_type = ie->arg_type;
5400 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5401 abi_long ret;
5402
5403 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5404 struct blkpg_partition host_part;
5405
5406 /* Read and convert blkpg */
5407 arg_type++;
5408 target_size = thunk_type_size(arg_type, 0);
5409 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5410 if (!argptr) {
5411 ret = -TARGET_EFAULT;
5412 goto out;
5413 }
5414 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5415 unlock_user(argptr, arg, 0);
5416
5417 switch (host_blkpg->op) {
5418 case BLKPG_ADD_PARTITION:
5419 case BLKPG_DEL_PARTITION:
5420 /* payload is struct blkpg_partition */
5421 break;
5422 default:
5423 /* Unknown opcode */
5424 ret = -TARGET_EINVAL;
5425 goto out;
5426 }
5427
5428 /* Read and convert blkpg->data */
5429 arg = (abi_long)(uintptr_t)host_blkpg->data;
5430 target_size = thunk_type_size(part_arg_type, 0);
5431 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5432 if (!argptr) {
5433 ret = -TARGET_EFAULT;
5434 goto out;
5435 }
5436 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5437 unlock_user(argptr, arg, 0);
5438
5439 /* Swizzle the data pointer to our local copy and call! */
5440 host_blkpg->data = &host_part;
5441 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5442
5443 out:
5444 return ret;
5445 }
5446
5447 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5448 int fd, int cmd, abi_long arg)
5449 {
5450 const argtype *arg_type = ie->arg_type;
5451 const StructEntry *se;
5452 const argtype *field_types;
5453 const int *dst_offsets, *src_offsets;
5454 int target_size;
5455 void *argptr;
5456 abi_ulong *target_rt_dev_ptr = NULL;
5457 unsigned long *host_rt_dev_ptr = NULL;
5458 abi_long ret;
5459 int i;
5460
5461 assert(ie->access == IOC_W);
5462 assert(*arg_type == TYPE_PTR);
5463 arg_type++;
5464 assert(*arg_type == TYPE_STRUCT);
5465 target_size = thunk_type_size(arg_type, 0);
5466 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5467 if (!argptr) {
5468 return -TARGET_EFAULT;
5469 }
5470 arg_type++;
5471 assert(*arg_type == (int)STRUCT_rtentry);
5472 se = struct_entries + *arg_type++;
5473 assert(se->convert[0] == NULL);
5474 /* convert struct here to be able to catch rt_dev string */
5475 field_types = se->field_types;
5476 dst_offsets = se->field_offsets[THUNK_HOST];
5477 src_offsets = se->field_offsets[THUNK_TARGET];
5478 for (i = 0; i < se->nb_fields; i++) {
5479 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5480 assert(*field_types == TYPE_PTRVOID);
5481 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
5482 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5483 if (*target_rt_dev_ptr != 0) {
5484 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5485 tswapal(*target_rt_dev_ptr));
5486 if (!*host_rt_dev_ptr) {
5487 unlock_user(argptr, arg, 0);
5488 return -TARGET_EFAULT;
5489 }
5490 } else {
5491 *host_rt_dev_ptr = 0;
5492 }
5493 field_types++;
5494 continue;
5495 }
5496 field_types = thunk_convert(buf_temp + dst_offsets[i],
5497 argptr + src_offsets[i],
5498 field_types, THUNK_HOST);
5499 }
5500 unlock_user(argptr, arg, 0);
5501
5502 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5503
5504 assert(host_rt_dev_ptr != NULL);
5505 assert(target_rt_dev_ptr != NULL);
5506 if (*host_rt_dev_ptr != 0) {
5507 unlock_user((void *)*host_rt_dev_ptr,
5508 *target_rt_dev_ptr, 0);
5509 }
5510 return ret;
5511 }
5512
5513 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5514 int fd, int cmd, abi_long arg)
5515 {
5516 int sig = target_to_host_signal(arg);
5517 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5518 }
5519
5520 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
5521 int fd, int cmd, abi_long arg)
5522 {
5523 struct timeval tv;
5524 abi_long ret;
5525
5526 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
5527 if (is_error(ret)) {
5528 return ret;
5529 }
5530
5531 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
5532 if (copy_to_user_timeval(arg, &tv)) {
5533 return -TARGET_EFAULT;
5534 }
5535 } else {
5536 if (copy_to_user_timeval64(arg, &tv)) {
5537 return -TARGET_EFAULT;
5538 }
5539 }
5540
5541 return ret;
5542 }
5543
5544 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
5545 int fd, int cmd, abi_long arg)
5546 {
5547 struct timespec ts;
5548 abi_long ret;
5549
5550 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
5551 if (is_error(ret)) {
5552 return ret;
5553 }
5554
5555 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5556 if (host_to_target_timespec(arg, &ts)) {
5557 return -TARGET_EFAULT;
5558 }
5559 } else{
5560 if (host_to_target_timespec64(arg, &ts)) {
5561 return -TARGET_EFAULT;
5562 }
5563 }
5564
5565 return ret;
5566 }
5567
5568 #ifdef TIOCGPTPEER
5569 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5570 int fd, int cmd, abi_long arg)
5571 {
5572 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5573 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5574 }
5575 #endif
5576
5577 #ifdef HAVE_DRM_H
5578
5579 static void unlock_drm_version(struct drm_version *host_ver,
5580 struct target_drm_version *target_ver,
5581 bool copy)
5582 {
5583 unlock_user(host_ver->name, target_ver->name,
5584 copy ? host_ver->name_len : 0);
5585 unlock_user(host_ver->date, target_ver->date,
5586 copy ? host_ver->date_len : 0);
5587 unlock_user(host_ver->desc, target_ver->desc,
5588 copy ? host_ver->desc_len : 0);
5589 }
5590
5591 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
5592 struct target_drm_version *target_ver)
5593 {
5594 memset(host_ver, 0, sizeof(*host_ver));
5595
5596 __get_user(host_ver->name_len, &target_ver->name_len);
5597 if (host_ver->name_len) {
5598 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
5599 target_ver->name_len, 0);
5600 if (!host_ver->name) {
5601 return -EFAULT;
5602 }
5603 }
5604
5605 __get_user(host_ver->date_len, &target_ver->date_len);
5606 if (host_ver->date_len) {
5607 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
5608 target_ver->date_len, 0);
5609 if (!host_ver->date) {
5610 goto err;
5611 }
5612 }
5613
5614 __get_user(host_ver->desc_len, &target_ver->desc_len);
5615 if (host_ver->desc_len) {
5616 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
5617 target_ver->desc_len, 0);
5618 if (!host_ver->desc) {
5619 goto err;
5620 }
5621 }
5622
5623 return 0;
5624 err:
5625 unlock_drm_version(host_ver, target_ver, false);
5626 return -EFAULT;
5627 }
5628
5629 static inline void host_to_target_drmversion(
5630 struct target_drm_version *target_ver,
5631 struct drm_version *host_ver)
5632 {
5633 __put_user(host_ver->version_major, &target_ver->version_major);
5634 __put_user(host_ver->version_minor, &target_ver->version_minor);
5635 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
5636 __put_user(host_ver->name_len, &target_ver->name_len);
5637 __put_user(host_ver->date_len, &target_ver->date_len);
5638 __put_user(host_ver->desc_len, &target_ver->desc_len);
5639 unlock_drm_version(host_ver, target_ver, true);
5640 }
5641
5642 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
5643 int fd, int cmd, abi_long arg)
5644 {
5645 struct drm_version *ver;
5646 struct target_drm_version *target_ver;
5647 abi_long ret;
5648
5649 switch (ie->host_cmd) {
5650 case DRM_IOCTL_VERSION:
5651 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
5652 return -TARGET_EFAULT;
5653 }
5654 ver = (struct drm_version *)buf_temp;
5655 ret = target_to_host_drmversion(ver, target_ver);
5656 if (!is_error(ret)) {
5657 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
5658 if (is_error(ret)) {
5659 unlock_drm_version(ver, target_ver, false);
5660 } else {
5661 host_to_target_drmversion(target_ver, ver);
5662 }
5663 }
5664 unlock_user_struct(target_ver, arg, 0);
5665 return ret;
5666 }
5667 return -TARGET_ENOSYS;
5668 }
5669
5670 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie,
5671 struct drm_i915_getparam *gparam,
5672 int fd, abi_long arg)
5673 {
5674 abi_long ret;
5675 int value;
5676 struct target_drm_i915_getparam *target_gparam;
5677
5678 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) {
5679 return -TARGET_EFAULT;
5680 }
5681
5682 __get_user(gparam->param, &target_gparam->param);
5683 gparam->value = &value;
5684 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam));
5685 put_user_s32(value, target_gparam->value);
5686
5687 unlock_user_struct(target_gparam, arg, 0);
5688 return ret;
5689 }
5690
5691 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp,
5692 int fd, int cmd, abi_long arg)
5693 {
5694 switch (ie->host_cmd) {
5695 case DRM_IOCTL_I915_GETPARAM:
5696 return do_ioctl_drm_i915_getparam(ie,
5697 (struct drm_i915_getparam *)buf_temp,
5698 fd, arg);
5699 default:
5700 return -TARGET_ENOSYS;
5701 }
5702 }
5703
5704 #endif
5705
5706 IOCTLEntry ioctl_entries[] = {
5707 #define IOCTL(cmd, access, ...) \
5708 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5709 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5710 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5711 #define IOCTL_IGNORE(cmd) \
5712 { TARGET_ ## cmd, 0, #cmd },
5713 #include "ioctls.h"
5714 { 0, 0, },
5715 };
5716
5717 /* ??? Implement proper locking for ioctls. */
5718 /* do_ioctl() Must return target values and target errnos. */
5719 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5720 {
5721 const IOCTLEntry *ie;
5722 const argtype *arg_type;
5723 abi_long ret;
5724 uint8_t buf_temp[MAX_STRUCT_SIZE];
5725 int target_size;
5726 void *argptr;
5727
5728 ie = ioctl_entries;
5729 for(;;) {
5730 if (ie->target_cmd == 0) {
5731 qemu_log_mask(
5732 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5733 return -TARGET_ENOSYS;
5734 }
5735 if (ie->target_cmd == cmd)
5736 break;
5737 ie++;
5738 }
5739 arg_type = ie->arg_type;
5740 if (ie->do_ioctl) {
5741 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5742 } else if (!ie->host_cmd) {
5743 /* Some architectures define BSD ioctls in their headers
5744 that are not implemented in Linux. */
5745 return -TARGET_ENOSYS;
5746 }
5747
5748 switch(arg_type[0]) {
5749 case TYPE_NULL:
5750 /* no argument */
5751 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5752 break;
5753 case TYPE_PTRVOID:
5754 case TYPE_INT:
5755 case TYPE_LONG:
5756 case TYPE_ULONG:
5757 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5758 break;
5759 case TYPE_PTR:
5760 arg_type++;
5761 target_size = thunk_type_size(arg_type, 0);
5762 switch(ie->access) {
5763 case IOC_R:
5764 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5765 if (!is_error(ret)) {
5766 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5767 if (!argptr)
5768 return -TARGET_EFAULT;
5769 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5770 unlock_user(argptr, arg, target_size);
5771 }
5772 break;
5773 case IOC_W:
5774 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5775 if (!argptr)
5776 return -TARGET_EFAULT;
5777 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5778 unlock_user(argptr, arg, 0);
5779 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5780 break;
5781 default:
5782 case IOC_RW:
5783 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5784 if (!argptr)
5785 return -TARGET_EFAULT;
5786 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5787 unlock_user(argptr, arg, 0);
5788 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5789 if (!is_error(ret)) {
5790 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5791 if (!argptr)
5792 return -TARGET_EFAULT;
5793 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5794 unlock_user(argptr, arg, target_size);
5795 }
5796 break;
5797 }
5798 break;
5799 default:
5800 qemu_log_mask(LOG_UNIMP,
5801 "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5802 (long)cmd, arg_type[0]);
5803 ret = -TARGET_ENOSYS;
5804 break;
5805 }
5806 return ret;
5807 }
5808
5809 static const bitmask_transtbl iflag_tbl[] = {
5810 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5811 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5812 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5813 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5814 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5815 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5816 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5817 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5818 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5819 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5820 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5821 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5822 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5823 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5824 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
5825 { 0, 0, 0, 0 }
5826 };
5827
5828 static const bitmask_transtbl oflag_tbl[] = {
5829 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5830 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5831 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5832 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5833 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5834 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5835 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5836 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5837 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5838 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5839 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5840 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5841 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5842 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5843 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5844 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5845 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5846 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5847 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5848 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5849 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5850 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5851 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5852 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5853 { 0, 0, 0, 0 }
5854 };
5855
5856 static const bitmask_transtbl cflag_tbl[] = {
5857 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5858 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5859 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5860 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5861 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5862 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5863 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5864 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5865 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5866 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5867 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5868 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5869 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5870 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5871 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5872 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5873 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5874 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5875 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5876 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5877 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5878 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5879 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5880 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5881 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5882 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5883 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5884 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5885 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5886 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5887 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5888 { 0, 0, 0, 0 }
5889 };
5890
5891 static const bitmask_transtbl lflag_tbl[] = {
5892 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5893 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5894 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5895 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5896 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5897 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5898 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5899 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5900 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5901 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5902 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5903 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5904 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5905 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5906 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5907 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
5908 { 0, 0, 0, 0 }
5909 };
5910
5911 static void target_to_host_termios (void *dst, const void *src)
5912 {
5913 struct host_termios *host = dst;
5914 const struct target_termios *target = src;
5915
5916 host->c_iflag =
5917 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5918 host->c_oflag =
5919 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5920 host->c_cflag =
5921 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5922 host->c_lflag =
5923 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5924 host->c_line = target->c_line;
5925
5926 memset(host->c_cc, 0, sizeof(host->c_cc));
5927 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5928 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5929 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5930 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5931 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5932 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5933 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5934 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5935 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5936 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5937 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5938 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5939 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5940 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5941 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5942 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5943 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5944 }
5945
5946 static void host_to_target_termios (void *dst, const void *src)
5947 {
5948 struct target_termios *target = dst;
5949 const struct host_termios *host = src;
5950
5951 target->c_iflag =
5952 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5953 target->c_oflag =
5954 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5955 target->c_cflag =
5956 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5957 target->c_lflag =
5958 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5959 target->c_line = host->c_line;
5960
5961 memset(target->c_cc, 0, sizeof(target->c_cc));
5962 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5963 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5964 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5965 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5966 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5967 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5968 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5969 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5970 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5971 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5972 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5973 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5974 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5975 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5976 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5977 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5978 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5979 }
5980
5981 static const StructEntry struct_termios_def = {
5982 .convert = { host_to_target_termios, target_to_host_termios },
5983 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5984 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5985 .print = print_termios,
5986 };
5987
5988 static bitmask_transtbl mmap_flags_tbl[] = {
5989 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5990 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5991 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5992 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5993 MAP_ANONYMOUS, MAP_ANONYMOUS },
5994 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5995 MAP_GROWSDOWN, MAP_GROWSDOWN },
5996 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5997 MAP_DENYWRITE, MAP_DENYWRITE },
5998 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5999 MAP_EXECUTABLE, MAP_EXECUTABLE },
6000 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
6001 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
6002 MAP_NORESERVE, MAP_NORESERVE },
6003 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
6004 /* MAP_STACK had been ignored by the kernel for quite some time.
6005 Recognize it for the target insofar as we do not want to pass
6006 it through to the host. */
6007 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
6008 { 0, 0, 0, 0 }
6009 };
6010
6011 /*
6012 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
6013 * TARGET_I386 is defined if TARGET_X86_64 is defined
6014 */
6015 #if defined(TARGET_I386)
6016
6017 /* NOTE: there is really one LDT for all the threads */
6018 static uint8_t *ldt_table;
6019
6020 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
6021 {
6022 int size;
6023 void *p;
6024
6025 if (!ldt_table)
6026 return 0;
6027 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
6028 if (size > bytecount)
6029 size = bytecount;
6030 p = lock_user(VERIFY_WRITE, ptr, size, 0);
6031 if (!p)
6032 return -TARGET_EFAULT;
6033 /* ??? Should this by byteswapped? */
6034 memcpy(p, ldt_table, size);
6035 unlock_user(p, ptr, size);
6036 return size;
6037 }
6038
6039 /* XXX: add locking support */
6040 static abi_long write_ldt(CPUX86State *env,
6041 abi_ulong ptr, unsigned long bytecount, int oldmode)
6042 {
6043 struct target_modify_ldt_ldt_s ldt_info;
6044 struct target_modify_ldt_ldt_s *target_ldt_info;
6045 int seg_32bit, contents, read_exec_only, limit_in_pages;
6046 int seg_not_present, useable, lm;
6047 uint32_t *lp, entry_1, entry_2;
6048
6049 if (bytecount != sizeof(ldt_info))
6050 return -TARGET_EINVAL;
6051 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
6052 return -TARGET_EFAULT;
6053 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6054 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6055 ldt_info.limit = tswap32(target_ldt_info->limit);
6056 ldt_info.flags = tswap32(target_ldt_info->flags);
6057 unlock_user_struct(target_ldt_info, ptr, 0);
6058
6059 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
6060 return -TARGET_EINVAL;
6061 seg_32bit = ldt_info.flags & 1;
6062 contents = (ldt_info.flags >> 1) & 3;
6063 read_exec_only = (ldt_info.flags >> 3) & 1;
6064 limit_in_pages = (ldt_info.flags >> 4) & 1;
6065 seg_not_present = (ldt_info.flags >> 5) & 1;
6066 useable = (ldt_info.flags >> 6) & 1;
6067 #ifdef TARGET_ABI32
6068 lm = 0;
6069 #else
6070 lm = (ldt_info.flags >> 7) & 1;
6071 #endif
6072 if (contents == 3) {
6073 if (oldmode)
6074 return -TARGET_EINVAL;
6075 if (seg_not_present == 0)
6076 return -TARGET_EINVAL;
6077 }
6078 /* allocate the LDT */
6079 if (!ldt_table) {
6080 env->ldt.base = target_mmap(0,
6081 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
6082 PROT_READ|PROT_WRITE,
6083 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
6084 if (env->ldt.base == -1)
6085 return -TARGET_ENOMEM;
6086 memset(g2h(env->ldt.base), 0,
6087 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
6088 env->ldt.limit = 0xffff;
6089 ldt_table = g2h(env->ldt.base);
6090 }
6091
6092 /* NOTE: same code as Linux kernel */
6093 /* Allow LDTs to be cleared by the user. */
6094 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6095 if (oldmode ||
6096 (contents == 0 &&
6097 read_exec_only == 1 &&
6098 seg_32bit == 0 &&
6099 limit_in_pages == 0 &&
6100 seg_not_present == 1 &&
6101 useable == 0 )) {
6102 entry_1 = 0;
6103 entry_2 = 0;
6104 goto install;
6105 }
6106 }
6107
6108 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6109 (ldt_info.limit & 0x0ffff);
6110 entry_2 = (ldt_info.base_addr & 0xff000000) |
6111 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6112 (ldt_info.limit & 0xf0000) |
6113 ((read_exec_only ^ 1) << 9) |
6114 (contents << 10) |
6115 ((seg_not_present ^ 1) << 15) |
6116 (seg_32bit << 22) |
6117 (limit_in_pages << 23) |
6118 (lm << 21) |
6119 0x7000;
6120 if (!oldmode)
6121 entry_2 |= (useable << 20);
6122
6123 /* Install the new entry ... */
6124 install:
6125 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
6126 lp[0] = tswap32(entry_1);
6127 lp[1] = tswap32(entry_2);
6128 return 0;
6129 }
6130
6131 /* specific and weird i386 syscalls */
6132 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
6133 unsigned long bytecount)
6134 {
6135 abi_long ret;
6136
6137 switch (func) {
6138 case 0:
6139 ret = read_ldt(ptr, bytecount);
6140 break;
6141 case 1:
6142 ret = write_ldt(env, ptr, bytecount, 1);
6143 break;
6144 case 0x11:
6145 ret = write_ldt(env, ptr, bytecount, 0);
6146 break;
6147 default:
6148 ret = -TARGET_ENOSYS;
6149 break;
6150 }
6151 return ret;
6152 }
6153
6154 #if defined(TARGET_ABI32)
6155 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
6156 {
6157 uint64_t *gdt_table = g2h(env->gdt.base);
6158 struct target_modify_ldt_ldt_s ldt_info;
6159 struct target_modify_ldt_ldt_s *target_ldt_info;
6160 int seg_32bit, contents, read_exec_only, limit_in_pages;
6161 int seg_not_present, useable, lm;
6162 uint32_t *lp, entry_1, entry_2;
6163 int i;
6164
6165 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6166 if (!target_ldt_info)
6167 return -TARGET_EFAULT;
6168 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6169 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6170 ldt_info.limit = tswap32(target_ldt_info->limit);
6171 ldt_info.flags = tswap32(target_ldt_info->flags);
6172 if (ldt_info.entry_number == -1) {
6173 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
6174 if (gdt_table[i] == 0) {
6175 ldt_info.entry_number = i;
6176 target_ldt_info->entry_number = tswap32(i);
6177 break;
6178 }
6179 }
6180 }
6181 unlock_user_struct(target_ldt_info, ptr, 1);
6182
6183 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
6184 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
6185 return -TARGET_EINVAL;
6186 seg_32bit = ldt_info.flags & 1;
6187 contents = (ldt_info.flags >> 1) & 3;
6188 read_exec_only = (ldt_info.flags >> 3) & 1;
6189 limit_in_pages = (ldt_info.flags >> 4) & 1;
6190 seg_not_present = (ldt_info.flags >> 5) & 1;
6191 useable = (ldt_info.flags >> 6) & 1;
6192 #ifdef TARGET_ABI32
6193 lm = 0;
6194 #else
6195 lm = (ldt_info.flags >> 7) & 1;
6196 #endif
6197
6198 if (contents == 3) {
6199 if (seg_not_present == 0)
6200 return -TARGET_EINVAL;
6201 }
6202
6203 /* NOTE: same code as Linux kernel */
6204 /* Allow LDTs to be cleared by the user. */
6205 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6206 if ((contents == 0 &&
6207 read_exec_only == 1 &&
6208 seg_32bit == 0 &&
6209 limit_in_pages == 0 &&
6210 seg_not_present == 1 &&
6211 useable == 0 )) {
6212 entry_1 = 0;
6213 entry_2 = 0;
6214 goto install;
6215 }
6216 }
6217
6218 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6219 (ldt_info.limit & 0x0ffff);
6220 entry_2 = (ldt_info.base_addr & 0xff000000) |
6221 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6222 (ldt_info.limit & 0xf0000) |
6223 ((read_exec_only ^ 1) << 9) |
6224 (contents << 10) |
6225 ((seg_not_present ^ 1) << 15) |
6226 (seg_32bit << 22) |
6227 (limit_in_pages << 23) |
6228 (useable << 20) |
6229 (lm << 21) |
6230 0x7000;
6231
6232 /* Install the new entry ... */
6233 install:
6234 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
6235 lp[0] = tswap32(entry_1);
6236 lp[1] = tswap32(entry_2);
6237 return 0;
6238 }
6239
6240 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
6241 {
6242 struct target_modify_ldt_ldt_s *target_ldt_info;
6243 uint64_t *gdt_table = g2h(env->gdt.base);
6244 uint32_t base_addr, limit, flags;
6245 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
6246 int seg_not_present, useable, lm;
6247 uint32_t *lp, entry_1, entry_2;
6248
6249 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6250 if (!target_ldt_info)
6251 return -TARGET_EFAULT;
6252 idx = tswap32(target_ldt_info->entry_number);
6253 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
6254 idx > TARGET_GDT_ENTRY_TLS_MAX) {
6255 unlock_user_struct(target_ldt_info, ptr, 1);
6256 return -TARGET_EINVAL;
6257 }
6258 lp = (uint32_t *)(gdt_table + idx);
6259 entry_1 = tswap32(lp[0]);
6260 entry_2 = tswap32(lp[1]);
6261
6262 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
6263 contents = (entry_2 >> 10) & 3;
6264 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
6265 seg_32bit = (entry_2 >> 22) & 1;
6266 limit_in_pages = (entry_2 >> 23) & 1;
6267 useable = (entry_2 >> 20) & 1;
6268 #ifdef TARGET_ABI32
6269 lm = 0;
6270 #else
6271 lm = (entry_2 >> 21) & 1;
6272 #endif
6273 flags = (seg_32bit << 0) | (contents << 1) |
6274 (read_exec_only << 3) | (limit_in_pages << 4) |
6275 (seg_not_present << 5) | (useable << 6) | (lm << 7);
6276 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
6277 base_addr = (entry_1 >> 16) |
6278 (entry_2 & 0xff000000) |
6279 ((entry_2 & 0xff) << 16);
6280 target_ldt_info->base_addr = tswapal(base_addr);
6281 target_ldt_info->limit = tswap32(limit);
6282 target_ldt_info->flags = tswap32(flags);
6283 unlock_user_struct(target_ldt_info, ptr, 1);
6284 return 0;
6285 }
6286
6287 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6288 {
6289 return -TARGET_ENOSYS;
6290 }
6291 #else
6292 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6293 {
6294 abi_long ret = 0;
6295 abi_ulong val;
6296 int idx;
6297
6298 switch(code) {
6299 case TARGET_ARCH_SET_GS:
6300 case TARGET_ARCH_SET_FS:
6301 if (code == TARGET_ARCH_SET_GS)
6302 idx = R_GS;
6303 else
6304 idx = R_FS;
6305 cpu_x86_load_seg(env, idx, 0);
6306 env->segs[idx].base = addr;
6307 break;
6308 case TARGET_ARCH_GET_GS:
6309 case TARGET_ARCH_GET_FS:
6310 if (code == TARGET_ARCH_GET_GS)
6311 idx = R_GS;
6312 else
6313 idx = R_FS;
6314 val = env->segs[idx].base;
6315 if (put_user(val, addr, abi_ulong))
6316 ret = -TARGET_EFAULT;
6317 break;
6318 default:
6319 ret = -TARGET_EINVAL;
6320 break;
6321 }
6322 return ret;
6323 }
6324 #endif /* defined(TARGET_ABI32 */
6325
6326 #endif /* defined(TARGET_I386) */
6327
6328 #define NEW_STACK_SIZE 0x40000
6329
6330
6331 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6332 typedef struct {
6333 CPUArchState *env;
6334 pthread_mutex_t mutex;
6335 pthread_cond_t cond;
6336 pthread_t thread;
6337 uint32_t tid;
6338 abi_ulong child_tidptr;
6339 abi_ulong parent_tidptr;
6340 sigset_t sigmask;
6341 } new_thread_info;
6342
6343 static void *clone_func(void *arg)
6344 {
6345 new_thread_info *info = arg;
6346 CPUArchState *env;
6347 CPUState *cpu;
6348 TaskState *ts;
6349
6350 rcu_register_thread();
6351 tcg_register_thread();
6352 env = info->env;
6353 cpu = env_cpu(env);
6354 thread_cpu = cpu;
6355 ts = (TaskState *)cpu->opaque;
6356 info->tid = sys_gettid();
6357 task_settid(ts);
6358 if (info->child_tidptr)
6359 put_user_u32(info->tid, info->child_tidptr);
6360 if (info->parent_tidptr)
6361 put_user_u32(info->tid, info->parent_tidptr);
6362 qemu_guest_random_seed_thread_part2(cpu->random_seed);
6363 /* Enable signals. */
6364 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6365 /* Signal to the parent that we're ready. */
6366 pthread_mutex_lock(&info->mutex);
6367 pthread_cond_broadcast(&info->cond);
6368 pthread_mutex_unlock(&info->mutex);
6369 /* Wait until the parent has finished initializing the tls state. */
6370 pthread_mutex_lock(&clone_lock);
6371 pthread_mutex_unlock(&clone_lock);
6372 cpu_loop(env);
6373 /* never exits */
6374 return NULL;
6375 }
6376
6377 /* do_fork() Must return host values and target errnos (unlike most
6378 do_*() functions). */
6379 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6380 abi_ulong parent_tidptr, target_ulong newtls,
6381 abi_ulong child_tidptr)
6382 {
6383 CPUState *cpu = env_cpu(env);
6384 int ret;
6385 TaskState *ts;
6386 CPUState *new_cpu;
6387 CPUArchState *new_env;
6388 sigset_t sigmask;
6389
6390 flags &= ~CLONE_IGNORED_FLAGS;
6391
6392 /* Emulate vfork() with fork() */
6393 if (flags & CLONE_VFORK)
6394 flags &= ~(CLONE_VFORK | CLONE_VM);
6395
6396 if (flags & CLONE_VM) {
6397 TaskState *parent_ts = (TaskState *)cpu->opaque;
6398 new_thread_info info;
6399 pthread_attr_t attr;
6400
6401 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6402 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6403 return -TARGET_EINVAL;
6404 }
6405
6406 ts = g_new0(TaskState, 1);
6407 init_task_state(ts);
6408
6409 /* Grab a mutex so that thread setup appears atomic. */
6410 pthread_mutex_lock(&clone_lock);
6411
6412 /* we create a new CPU instance. */
6413 new_env = cpu_copy(env);
6414 /* Init regs that differ from the parent. */
6415 cpu_clone_regs_child(new_env, newsp, flags);
6416 cpu_clone_regs_parent(env, flags);
6417 new_cpu = env_cpu(new_env);
6418 new_cpu->opaque = ts;
6419 ts->bprm = parent_ts->bprm;
6420 ts->info = parent_ts->info;
6421 ts->signal_mask = parent_ts->signal_mask;
6422
6423 if (flags & CLONE_CHILD_CLEARTID) {
6424 ts->child_tidptr = child_tidptr;
6425 }
6426
6427 if (flags & CLONE_SETTLS) {
6428 cpu_set_tls (new_env, newtls);
6429 }
6430
6431 memset(&info, 0, sizeof(info));
6432 pthread_mutex_init(&info.mutex, NULL);
6433 pthread_mutex_lock(&info.mutex);
6434 pthread_cond_init(&info.cond, NULL);
6435 info.env = new_env;
6436 if (flags & CLONE_CHILD_SETTID) {
6437 info.child_tidptr = child_tidptr;
6438 }
6439 if (flags & CLONE_PARENT_SETTID) {
6440 info.parent_tidptr = parent_tidptr;
6441 }
6442
6443 ret = pthread_attr_init(&attr);
6444 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6445 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6446 /* It is not safe to deliver signals until the child has finished
6447 initializing, so temporarily block all signals. */
6448 sigfillset(&sigmask);
6449 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6450 cpu->random_seed = qemu_guest_random_seed_thread_part1();
6451
6452 /* If this is our first additional thread, we need to ensure we
6453 * generate code for parallel execution and flush old translations.
6454 */
6455 if (!parallel_cpus) {
6456 parallel_cpus = true;
6457 tb_flush(cpu);
6458 }
6459
6460 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6461 /* TODO: Free new CPU state if thread creation failed. */
6462
6463 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6464 pthread_attr_destroy(&attr);
6465 if (ret == 0) {
6466 /* Wait for the child to initialize. */
6467 pthread_cond_wait(&info.cond, &info.mutex);
6468 ret = info.tid;
6469 } else {
6470 ret = -1;
6471 }
6472 pthread_mutex_unlock(&info.mutex);
6473 pthread_cond_destroy(&info.cond);
6474 pthread_mutex_destroy(&info.mutex);
6475 pthread_mutex_unlock(&clone_lock);
6476 } else {
6477 /* if no CLONE_VM, we consider it is a fork */
6478 if (flags & CLONE_INVALID_FORK_FLAGS) {
6479 return -TARGET_EINVAL;
6480 }
6481
6482 /* We can't support custom termination signals */
6483 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6484 return -TARGET_EINVAL;
6485 }
6486
6487 if (block_signals()) {
6488 return -TARGET_ERESTARTSYS;
6489 }
6490
6491 fork_start();
6492 ret = fork();
6493 if (ret == 0) {
6494 /* Child Process. */
6495 cpu_clone_regs_child(env, newsp, flags);
6496 fork_end(1);
6497 /* There is a race condition here. The parent process could
6498 theoretically read the TID in the child process before the child
6499 tid is set. This would require using either ptrace
6500 (not implemented) or having *_tidptr to point at a shared memory
6501 mapping. We can't repeat the spinlock hack used above because
6502 the child process gets its own copy of the lock. */
6503 if (flags & CLONE_CHILD_SETTID)
6504 put_user_u32(sys_gettid(), child_tidptr);
6505 if (flags & CLONE_PARENT_SETTID)
6506 put_user_u32(sys_gettid(), parent_tidptr);
6507 ts = (TaskState *)cpu->opaque;
6508 if (flags & CLONE_SETTLS)
6509 cpu_set_tls (env, newtls);
6510 if (flags & CLONE_CHILD_CLEARTID)
6511 ts->child_tidptr = child_tidptr;
6512 } else {
6513 cpu_clone_regs_parent(env, flags);
6514 fork_end(0);
6515 }
6516 }
6517 return ret;
6518 }
6519
6520 /* warning : doesn't handle linux specific flags... */
6521 static int target_to_host_fcntl_cmd(int cmd)
6522 {
6523 int ret;
6524
6525 switch(cmd) {
6526 case TARGET_F_DUPFD:
6527 case TARGET_F_GETFD:
6528 case TARGET_F_SETFD:
6529 case TARGET_F_GETFL:
6530 case TARGET_F_SETFL:
6531 case TARGET_F_OFD_GETLK:
6532 case TARGET_F_OFD_SETLK:
6533 case TARGET_F_OFD_SETLKW:
6534 ret = cmd;
6535 break;
6536 case TARGET_F_GETLK:
6537 ret = F_GETLK64;
6538 break;
6539 case TARGET_F_SETLK:
6540 ret = F_SETLK64;
6541 break;
6542 case TARGET_F_SETLKW:
6543 ret = F_SETLKW64;
6544 break;
6545 case TARGET_F_GETOWN:
6546 ret = F_GETOWN;
6547 break;
6548 case TARGET_F_SETOWN:
6549 ret = F_SETOWN;
6550 break;
6551 case TARGET_F_GETSIG:
6552 ret = F_GETSIG;
6553 break;
6554 case TARGET_F_SETSIG:
6555 ret = F_SETSIG;
6556 break;
6557 #if TARGET_ABI_BITS == 32
6558 case TARGET_F_GETLK64:
6559 ret = F_GETLK64;
6560 break;
6561 case TARGET_F_SETLK64:
6562 ret = F_SETLK64;
6563 break;
6564 case TARGET_F_SETLKW64:
6565 ret = F_SETLKW64;
6566 break;
6567 #endif
6568 case TARGET_F_SETLEASE:
6569 ret = F_SETLEASE;
6570 break;
6571 case TARGET_F_GETLEASE:
6572 ret = F_GETLEASE;
6573 break;
6574 #ifdef F_DUPFD_CLOEXEC
6575 case TARGET_F_DUPFD_CLOEXEC:
6576 ret = F_DUPFD_CLOEXEC;
6577 break;
6578 #endif
6579 case TARGET_F_NOTIFY:
6580 ret = F_NOTIFY;
6581 break;
6582 #ifdef F_GETOWN_EX
6583 case TARGET_F_GETOWN_EX:
6584 ret = F_GETOWN_EX;
6585 break;
6586 #endif
6587 #ifdef F_SETOWN_EX
6588 case TARGET_F_SETOWN_EX:
6589 ret = F_SETOWN_EX;
6590 break;
6591 #endif
6592 #ifdef F_SETPIPE_SZ
6593 case TARGET_F_SETPIPE_SZ:
6594 ret = F_SETPIPE_SZ;
6595 break;
6596 case TARGET_F_GETPIPE_SZ:
6597 ret = F_GETPIPE_SZ;
6598 break;
6599 #endif
6600 default:
6601 ret = -TARGET_EINVAL;
6602 break;
6603 }
6604
6605 #if defined(__powerpc64__)
6606 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
6607 * is not supported by kernel. The glibc fcntl call actually adjusts
6608 * them to 5, 6 and 7 before making the syscall(). Since we make the
6609 * syscall directly, adjust to what is supported by the kernel.
6610 */
6611 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
6612 ret -= F_GETLK64 - 5;
6613 }
6614 #endif
6615
6616 return ret;
6617 }
6618
6619 #define FLOCK_TRANSTBL \
6620 switch (type) { \
6621 TRANSTBL_CONVERT(F_RDLCK); \
6622 TRANSTBL_CONVERT(F_WRLCK); \
6623 TRANSTBL_CONVERT(F_UNLCK); \
6624 TRANSTBL_CONVERT(F_EXLCK); \
6625 TRANSTBL_CONVERT(F_SHLCK); \
6626 }
6627
6628 static int target_to_host_flock(int type)
6629 {
6630 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
6631 FLOCK_TRANSTBL
6632 #undef TRANSTBL_CONVERT
6633 return -TARGET_EINVAL;
6634 }
6635
6636 static int host_to_target_flock(int type)
6637 {
6638 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
6639 FLOCK_TRANSTBL
6640 #undef TRANSTBL_CONVERT
6641 /* if we don't know how to convert the value coming
6642 * from the host we copy to the target field as-is
6643 */
6644 return type;
6645 }
6646
6647 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6648 abi_ulong target_flock_addr)
6649 {
6650 struct target_flock *target_fl;
6651 int l_type;
6652
6653 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6654 return -TARGET_EFAULT;
6655 }
6656
6657 __get_user(l_type, &target_fl->l_type);
6658 l_type = target_to_host_flock(l_type);
6659 if (l_type < 0) {
6660 return l_type;
6661 }
6662 fl->l_type = l_type;
6663 __get_user(fl->l_whence, &target_fl->l_whence);
6664 __get_user(fl->l_start, &target_fl->l_start);
6665 __get_user(fl->l_len, &target_fl->l_len);
6666 __get_user(fl->l_pid, &target_fl->l_pid);
6667 unlock_user_struct(target_fl, target_flock_addr, 0);
6668 return 0;
6669 }
6670
6671 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6672 const struct flock64 *fl)
6673 {
6674 struct target_flock *target_fl;
6675 short l_type;
6676
6677 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6678 return -TARGET_EFAULT;
6679 }
6680
6681 l_type = host_to_target_flock(fl->l_type);
6682 __put_user(l_type, &target_fl->l_type);
6683 __put_user(fl->l_whence, &target_fl->l_whence);
6684 __put_user(fl->l_start, &target_fl->l_start);
6685 __put_user(fl->l_len, &target_fl->l_len);
6686 __put_user(fl->l_pid, &target_fl->l_pid);
6687 unlock_user_struct(target_fl, target_flock_addr, 1);
6688 return 0;
6689 }
6690
6691 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6692 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6693
6694 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6695 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
6696 abi_ulong target_flock_addr)
6697 {
6698 struct target_oabi_flock64 *target_fl;
6699 int l_type;
6700
6701 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6702 return -TARGET_EFAULT;
6703 }
6704
6705 __get_user(l_type, &target_fl->l_type);
6706 l_type = target_to_host_flock(l_type);
6707 if (l_type < 0) {
6708 return l_type;
6709 }
6710 fl->l_type = l_type;
6711 __get_user(fl->l_whence, &target_fl->l_whence);
6712 __get_user(fl->l_start, &target_fl->l_start);
6713 __get_user(fl->l_len, &target_fl->l_len);
6714 __get_user(fl->l_pid, &target_fl->l_pid);
6715 unlock_user_struct(target_fl, target_flock_addr, 0);
6716 return 0;
6717 }
6718
6719 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
6720 const struct flock64 *fl)
6721 {
6722 struct target_oabi_flock64 *target_fl;
6723 short l_type;
6724
6725 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6726 return -TARGET_EFAULT;
6727 }
6728
6729 l_type = host_to_target_flock(fl->l_type);
6730 __put_user(l_type, &target_fl->l_type);
6731 __put_user(fl->l_whence, &target_fl->l_whence);
6732 __put_user(fl->l_start, &target_fl->l_start);
6733 __put_user(fl->l_len, &target_fl->l_len);
6734 __put_user(fl->l_pid, &target_fl->l_pid);
6735 unlock_user_struct(target_fl, target_flock_addr, 1);
6736 return 0;
6737 }
6738 #endif
6739
6740 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6741 abi_ulong target_flock_addr)
6742 {
6743 struct target_flock64 *target_fl;
6744 int l_type;
6745
6746 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6747 return -TARGET_EFAULT;
6748 }
6749
6750 __get_user(l_type, &target_fl->l_type);
6751 l_type = target_to_host_flock(l_type);
6752 if (l_type < 0) {
6753 return l_type;
6754 }
6755 fl->l_type = l_type;
6756 __get_user(fl->l_whence, &target_fl->l_whence);
6757 __get_user(fl->l_start, &target_fl->l_start);
6758 __get_user(fl->l_len, &target_fl->l_len);
6759 __get_user(fl->l_pid, &target_fl->l_pid);
6760 unlock_user_struct(target_fl, target_flock_addr, 0);
6761 return 0;
6762 }
6763
6764 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6765 const struct flock64 *fl)
6766 {
6767 struct target_flock64 *target_fl;
6768 short l_type;
6769
6770 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6771 return -TARGET_EFAULT;
6772 }
6773
6774 l_type = host_to_target_flock(fl->l_type);
6775 __put_user(l_type, &target_fl->l_type);
6776 __put_user(fl->l_whence, &target_fl->l_whence);
6777 __put_user(fl->l_start, &target_fl->l_start);
6778 __put_user(fl->l_len, &target_fl->l_len);
6779 __put_user(fl->l_pid, &target_fl->l_pid);
6780 unlock_user_struct(target_fl, target_flock_addr, 1);
6781 return 0;
6782 }
6783
6784 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6785 {
6786 struct flock64 fl64;
6787 #ifdef F_GETOWN_EX
6788 struct f_owner_ex fox;
6789 struct target_f_owner_ex *target_fox;
6790 #endif
6791 abi_long ret;
6792 int host_cmd = target_to_host_fcntl_cmd(cmd);
6793
6794 if (host_cmd == -TARGET_EINVAL)
6795 return host_cmd;
6796
6797 switch(cmd) {
6798 case TARGET_F_GETLK:
6799 ret = copy_from_user_flock(&fl64, arg);
6800 if (ret) {
6801 return ret;
6802 }
6803 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6804 if (ret == 0) {
6805 ret = copy_to_user_flock(arg, &fl64);
6806 }
6807 break;
6808
6809 case TARGET_F_SETLK:
6810 case TARGET_F_SETLKW:
6811 ret = copy_from_user_flock(&fl64, arg);
6812 if (ret) {
6813 return ret;
6814 }
6815 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6816 break;
6817
6818 case TARGET_F_GETLK64:
6819 case TARGET_F_OFD_GETLK:
6820 ret = copy_from_user_flock64(&fl64, arg);
6821 if (ret) {
6822 return ret;
6823 }
6824 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6825 if (ret == 0) {
6826 ret = copy_to_user_flock64(arg, &fl64);
6827 }
6828 break;
6829 case TARGET_F_SETLK64:
6830 case TARGET_F_SETLKW64:
6831 case TARGET_F_OFD_SETLK:
6832 case TARGET_F_OFD_SETLKW:
6833 ret = copy_from_user_flock64(&fl64, arg);
6834 if (ret) {
6835 return ret;
6836 }
6837 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6838 break;
6839
6840 case TARGET_F_GETFL:
6841 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6842 if (ret >= 0) {
6843 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
6844 }
6845 break;
6846
6847 case TARGET_F_SETFL:
6848 ret = get_errno(safe_fcntl(fd, host_cmd,
6849 target_to_host_bitmask(arg,
6850 fcntl_flags_tbl)));
6851 break;
6852
6853 #ifdef F_GETOWN_EX
6854 case TARGET_F_GETOWN_EX:
6855 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6856 if (ret >= 0) {
6857 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
6858 return -TARGET_EFAULT;
6859 target_fox->type = tswap32(fox.type);
6860 target_fox->pid = tswap32(fox.pid);
6861 unlock_user_struct(target_fox, arg, 1);
6862 }
6863 break;
6864 #endif
6865
6866 #ifdef F_SETOWN_EX
6867 case TARGET_F_SETOWN_EX:
6868 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
6869 return -TARGET_EFAULT;
6870 fox.type = tswap32(target_fox->type);
6871 fox.pid = tswap32(target_fox->pid);
6872 unlock_user_struct(target_fox, arg, 0);
6873 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6874 break;
6875 #endif
6876
6877 case TARGET_F_SETSIG:
6878 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg)));
6879 break;
6880
6881 case TARGET_F_GETSIG:
6882 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg)));
6883 break;
6884
6885 case TARGET_F_SETOWN:
6886 case TARGET_F_GETOWN:
6887 case TARGET_F_SETLEASE:
6888 case TARGET_F_GETLEASE:
6889 case TARGET_F_SETPIPE_SZ:
6890 case TARGET_F_GETPIPE_SZ:
6891 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6892 break;
6893
6894 default:
6895 ret = get_errno(safe_fcntl(fd, cmd, arg));
6896 break;
6897 }
6898 return ret;
6899 }
6900
6901 #ifdef USE_UID16
6902
6903 static inline int high2lowuid(int uid)
6904 {
6905 if (uid > 65535)
6906 return 65534;
6907 else
6908 return uid;
6909 }
6910
6911 static inline int high2lowgid(int gid)
6912 {
6913 if (gid > 65535)
6914 return 65534;
6915 else
6916 return gid;
6917 }
6918
6919 static inline int low2highuid(int uid)
6920 {
6921 if ((int16_t)uid == -1)
6922 return -1;
6923 else
6924 return uid;
6925 }
6926
6927 static inline int low2highgid(int gid)
6928 {
6929 if ((int16_t)gid == -1)
6930 return -1;
6931 else
6932 return gid;
6933 }
6934 static inline int tswapid(int id)
6935 {
6936 return tswap16(id);
6937 }
6938
6939 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6940
6941 #else /* !USE_UID16 */
6942 static inline int high2lowuid(int uid)
6943 {
6944 return uid;
6945 }
6946 static inline int high2lowgid(int gid)
6947 {
6948 return gid;
6949 }
6950 static inline int low2highuid(int uid)
6951 {
6952 return uid;
6953 }
6954 static inline int low2highgid(int gid)
6955 {
6956 return gid;
6957 }
6958 static inline int tswapid(int id)
6959 {
6960 return tswap32(id);
6961 }
6962
6963 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6964
6965 #endif /* USE_UID16 */
6966
6967 /* We must do direct syscalls for setting UID/GID, because we want to
6968 * implement the Linux system call semantics of "change only for this thread",
6969 * not the libc/POSIX semantics of "change for all threads in process".
6970 * (See http://ewontfix.com/17/ for more details.)
6971 * We use the 32-bit version of the syscalls if present; if it is not
6972 * then either the host architecture supports 32-bit UIDs natively with
6973 * the standard syscall, or the 16-bit UID is the best we can do.
6974 */
6975 #ifdef __NR_setuid32
6976 #define __NR_sys_setuid __NR_setuid32
6977 #else
6978 #define __NR_sys_setuid __NR_setuid
6979 #endif
6980 #ifdef __NR_setgid32
6981 #define __NR_sys_setgid __NR_setgid32
6982 #else
6983 #define __NR_sys_setgid __NR_setgid
6984 #endif
6985 #ifdef __NR_setresuid32
6986 #define __NR_sys_setresuid __NR_setresuid32
6987 #else
6988 #define __NR_sys_setresuid __NR_setresuid
6989 #endif
6990 #ifdef __NR_setresgid32
6991 #define __NR_sys_setresgid __NR_setresgid32
6992 #else
6993 #define __NR_sys_setresgid __NR_setresgid
6994 #endif
6995
6996 _syscall1(int, sys_setuid, uid_t, uid)
6997 _syscall1(int, sys_setgid, gid_t, gid)
6998 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6999 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
7000
7001 void syscall_init(void)
7002 {
7003 IOCTLEntry *ie;
7004 const argtype *arg_type;
7005 int size;
7006 int i;
7007
7008 thunk_init(STRUCT_MAX);
7009
7010 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
7011 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
7012 #include "syscall_types.h"
7013 #undef STRUCT
7014 #undef STRUCT_SPECIAL
7015
7016 /* Build target_to_host_errno_table[] table from
7017 * host_to_target_errno_table[]. */
7018 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
7019 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
7020 }
7021
7022 /* we patch the ioctl size if necessary. We rely on the fact that
7023 no ioctl has all the bits at '1' in the size field */
7024 ie = ioctl_entries;
7025 while (ie->target_cmd != 0) {
7026 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
7027 TARGET_IOC_SIZEMASK) {
7028 arg_type = ie->arg_type;
7029 if (arg_type[0] != TYPE_PTR) {
7030 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
7031 ie->target_cmd);
7032 exit(1);
7033 }
7034 arg_type++;
7035 size = thunk_type_size(arg_type, 0);
7036 ie->target_cmd = (ie->target_cmd &
7037 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
7038 (size << TARGET_IOC_SIZESHIFT);
7039 }
7040
7041 /* automatic consistency check if same arch */
7042 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
7043 (defined(__x86_64__) && defined(TARGET_X86_64))
7044 if (unlikely(ie->target_cmd != ie->host_cmd)) {
7045 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
7046 ie->name, ie->target_cmd, ie->host_cmd);
7047 }
7048 #endif
7049 ie++;
7050 }
7051 }
7052
7053 #ifdef TARGET_NR_truncate64
7054 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
7055 abi_long arg2,
7056 abi_long arg3,
7057 abi_long arg4)
7058 {
7059 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
7060 arg2 = arg3;
7061 arg3 = arg4;
7062 }
7063 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
7064 }
7065 #endif
7066
7067 #ifdef TARGET_NR_ftruncate64
7068 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
7069 abi_long arg2,
7070 abi_long arg3,
7071 abi_long arg4)
7072 {
7073 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
7074 arg2 = arg3;
7075 arg3 = arg4;
7076 }
7077 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
7078 }
7079 #endif
7080
7081 #if defined(TARGET_NR_timer_settime) || \
7082 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
7083 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its,
7084 abi_ulong target_addr)
7085 {
7086 if (target_to_host_timespec(&host_its->it_interval, target_addr +
7087 offsetof(struct target_itimerspec,
7088 it_interval)) ||
7089 target_to_host_timespec(&host_its->it_value, target_addr +
7090 offsetof(struct target_itimerspec,
7091 it_value))) {
7092 return -TARGET_EFAULT;
7093 }
7094
7095 return 0;
7096 }
7097 #endif
7098
7099 #if defined(TARGET_NR_timer_settime64) || \
7100 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD))
7101 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its,
7102 abi_ulong target_addr)
7103 {
7104 if (target_to_host_timespec64(&host_its->it_interval, target_addr +
7105 offsetof(struct target__kernel_itimerspec,
7106 it_interval)) ||
7107 target_to_host_timespec64(&host_its->it_value, target_addr +
7108 offsetof(struct target__kernel_itimerspec,
7109 it_value))) {
7110 return -TARGET_EFAULT;
7111 }
7112
7113 return 0;
7114 }
7115 #endif
7116
7117 #if ((defined(TARGET_NR_timerfd_gettime) || \
7118 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
7119 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
7120 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
7121 struct itimerspec *host_its)
7122 {
7123 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7124 it_interval),
7125 &host_its->it_interval) ||
7126 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7127 it_value),
7128 &host_its->it_value)) {
7129 return -TARGET_EFAULT;
7130 }
7131 return 0;
7132 }
7133 #endif
7134
7135 #if ((defined(TARGET_NR_timerfd_gettime64) || \
7136 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \
7137 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64)
7138 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr,
7139 struct itimerspec *host_its)
7140 {
7141 if (host_to_target_timespec64(target_addr +
7142 offsetof(struct target__kernel_itimerspec,
7143 it_interval),
7144 &host_its->it_interval) ||
7145 host_to_target_timespec64(target_addr +
7146 offsetof(struct target__kernel_itimerspec,
7147 it_value),
7148 &host_its->it_value)) {
7149 return -TARGET_EFAULT;
7150 }
7151 return 0;
7152 }
7153 #endif
7154
7155 #if defined(TARGET_NR_adjtimex) || \
7156 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
7157 static inline abi_long target_to_host_timex(struct timex *host_tx,
7158 abi_long target_addr)
7159 {
7160 struct target_timex *target_tx;
7161
7162 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7163 return -TARGET_EFAULT;
7164 }
7165
7166 __get_user(host_tx->modes, &target_tx->modes);
7167 __get_user(host_tx->offset, &target_tx->offset);
7168 __get_user(host_tx->freq, &target_tx->freq);
7169 __get_user(host_tx->maxerror, &target_tx->maxerror);
7170 __get_user(host_tx->esterror, &target_tx->esterror);
7171 __get_user(host_tx->status, &target_tx->status);
7172 __get_user(host_tx->constant, &target_tx->constant);
7173 __get_user(host_tx->precision, &target_tx->precision);
7174 __get_user(host_tx->tolerance, &target_tx->tolerance);
7175 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7176 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7177 __get_user(host_tx->tick, &target_tx->tick);
7178 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7179 __get_user(host_tx->jitter, &target_tx->jitter);
7180 __get_user(host_tx->shift, &target_tx->shift);
7181 __get_user(host_tx->stabil, &target_tx->stabil);
7182 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7183 __get_user(host_tx->calcnt, &target_tx->calcnt);
7184 __get_user(host_tx->errcnt, &target_tx->errcnt);
7185 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7186 __get_user(host_tx->tai, &target_tx->tai);
7187
7188 unlock_user_struct(target_tx, target_addr, 0);
7189 return 0;
7190 }
7191
7192 static inline abi_long host_to_target_timex(abi_long target_addr,
7193 struct timex *host_tx)
7194 {
7195 struct target_timex *target_tx;
7196
7197 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7198 return -TARGET_EFAULT;
7199 }
7200
7201 __put_user(host_tx->modes, &target_tx->modes);
7202 __put_user(host_tx->offset, &target_tx->offset);
7203 __put_user(host_tx->freq, &target_tx->freq);
7204 __put_user(host_tx->maxerror, &target_tx->maxerror);
7205 __put_user(host_tx->esterror, &target_tx->esterror);
7206 __put_user(host_tx->status, &target_tx->status);
7207 __put_user(host_tx->constant, &target_tx->constant);
7208 __put_user(host_tx->precision, &target_tx->precision);
7209 __put_user(host_tx->tolerance, &target_tx->tolerance);
7210 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7211 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7212 __put_user(host_tx->tick, &target_tx->tick);
7213 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7214 __put_user(host_tx->jitter, &target_tx->jitter);
7215 __put_user(host_tx->shift, &target_tx->shift);
7216 __put_user(host_tx->stabil, &target_tx->stabil);
7217 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7218 __put_user(host_tx->calcnt, &target_tx->calcnt);
7219 __put_user(host_tx->errcnt, &target_tx->errcnt);
7220 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7221 __put_user(host_tx->tai, &target_tx->tai);
7222
7223 unlock_user_struct(target_tx, target_addr, 1);
7224 return 0;
7225 }
7226 #endif
7227
7228
7229 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
7230 static inline abi_long target_to_host_timex64(struct timex *host_tx,
7231 abi_long target_addr)
7232 {
7233 struct target__kernel_timex *target_tx;
7234
7235 if (copy_from_user_timeval64(&host_tx->time, target_addr +
7236 offsetof(struct target__kernel_timex,
7237 time))) {
7238 return -TARGET_EFAULT;
7239 }
7240
7241 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7242 return -TARGET_EFAULT;
7243 }
7244
7245 __get_user(host_tx->modes, &target_tx->modes);
7246 __get_user(host_tx->offset, &target_tx->offset);
7247 __get_user(host_tx->freq, &target_tx->freq);
7248 __get_user(host_tx->maxerror, &target_tx->maxerror);
7249 __get_user(host_tx->esterror, &target_tx->esterror);
7250 __get_user(host_tx->status, &target_tx->status);
7251 __get_user(host_tx->constant, &target_tx->constant);
7252 __get_user(host_tx->precision, &target_tx->precision);
7253 __get_user(host_tx->tolerance, &target_tx->tolerance);
7254 __get_user(host_tx->tick, &target_tx->tick);
7255 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7256 __get_user(host_tx->jitter, &target_tx->jitter);
7257 __get_user(host_tx->shift, &target_tx->shift);
7258 __get_user(host_tx->stabil, &target_tx->stabil);
7259 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7260 __get_user(host_tx->calcnt, &target_tx->calcnt);
7261 __get_user(host_tx->errcnt, &target_tx->errcnt);
7262 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7263 __get_user(host_tx->tai, &target_tx->tai);
7264
7265 unlock_user_struct(target_tx, target_addr, 0);
7266 return 0;
7267 }
7268
7269 static inline abi_long host_to_target_timex64(abi_long target_addr,
7270 struct timex *host_tx)
7271 {
7272 struct target__kernel_timex *target_tx;
7273
7274 if (copy_to_user_timeval64(target_addr +
7275 offsetof(struct target__kernel_timex, time),
7276 &host_tx->time)) {
7277 return -TARGET_EFAULT;
7278 }
7279
7280 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7281 return -TARGET_EFAULT;
7282 }
7283
7284 __put_user(host_tx->modes, &target_tx->modes);
7285 __put_user(host_tx->offset, &target_tx->offset);
7286 __put_user(host_tx->freq, &target_tx->freq);
7287 __put_user(host_tx->maxerror, &target_tx->maxerror);
7288 __put_user(host_tx->esterror, &target_tx->esterror);
7289 __put_user(host_tx->status, &target_tx->status);
7290 __put_user(host_tx->constant, &target_tx->constant);
7291 __put_user(host_tx->precision, &target_tx->precision);
7292 __put_user(host_tx->tolerance, &target_tx->tolerance);
7293 __put_user(host_tx->tick, &target_tx->tick);
7294 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7295 __put_user(host_tx->jitter, &target_tx->jitter);
7296 __put_user(host_tx->shift, &target_tx->shift);
7297 __put_user(host_tx->stabil, &target_tx->stabil);
7298 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7299 __put_user(host_tx->calcnt, &target_tx->calcnt);
7300 __put_user(host_tx->errcnt, &target_tx->errcnt);
7301 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7302 __put_user(host_tx->tai, &target_tx->tai);
7303
7304 unlock_user_struct(target_tx, target_addr, 1);
7305 return 0;
7306 }
7307 #endif
7308
7309 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
7310 abi_ulong target_addr)
7311 {
7312 struct target_sigevent *target_sevp;
7313
7314 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
7315 return -TARGET_EFAULT;
7316 }
7317
7318 /* This union is awkward on 64 bit systems because it has a 32 bit
7319 * integer and a pointer in it; we follow the conversion approach
7320 * used for handling sigval types in signal.c so the guest should get
7321 * the correct value back even if we did a 64 bit byteswap and it's
7322 * using the 32 bit integer.
7323 */
7324 host_sevp->sigev_value.sival_ptr =
7325 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
7326 host_sevp->sigev_signo =
7327 target_to_host_signal(tswap32(target_sevp->sigev_signo));
7328 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
7329 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
7330
7331 unlock_user_struct(target_sevp, target_addr, 1);
7332 return 0;
7333 }
7334
7335 #if defined(TARGET_NR_mlockall)
7336 static inline int target_to_host_mlockall_arg(int arg)
7337 {
7338 int result = 0;
7339
7340 if (arg & TARGET_MCL_CURRENT) {
7341 result |= MCL_CURRENT;
7342 }
7343 if (arg & TARGET_MCL_FUTURE) {
7344 result |= MCL_FUTURE;
7345 }
7346 #ifdef MCL_ONFAULT
7347 if (arg & TARGET_MCL_ONFAULT) {
7348 result |= MCL_ONFAULT;
7349 }
7350 #endif
7351
7352 return result;
7353 }
7354 #endif
7355
7356 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
7357 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
7358 defined(TARGET_NR_newfstatat))
7359 static inline abi_long host_to_target_stat64(void *cpu_env,
7360 abi_ulong target_addr,
7361 struct stat *host_st)
7362 {
7363 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
7364 if (((CPUARMState *)cpu_env)->eabi) {
7365 struct target_eabi_stat64 *target_st;
7366
7367 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7368 return -TARGET_EFAULT;
7369 memset(target_st, 0, sizeof(struct target_eabi_stat64));
7370 __put_user(host_st->st_dev, &target_st->st_dev);
7371 __put_user(host_st->st_ino, &target_st->st_ino);
7372 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7373 __put_user(host_st->st_ino, &target_st->__st_ino);
7374 #endif
7375 __put_user(host_st->st_mode, &target_st->st_mode);
7376 __put_user(host_st->st_nlink, &target_st->st_nlink);
7377 __put_user(host_st->st_uid, &target_st->st_uid);
7378 __put_user(host_st->st_gid, &target_st->st_gid);
7379 __put_user(host_st->st_rdev, &target_st->st_rdev);
7380 __put_user(host_st->st_size, &target_st->st_size);
7381 __put_user(host_st->st_blksize, &target_st->st_blksize);
7382 __put_user(host_st->st_blocks, &target_st->st_blocks);
7383 __put_user(host_st->st_atime, &target_st->target_st_atime);
7384 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7385 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7386 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
7387 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7388 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7389 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7390 #endif
7391 unlock_user_struct(target_st, target_addr, 1);
7392 } else
7393 #endif
7394 {
7395 #if defined(TARGET_HAS_STRUCT_STAT64)
7396 struct target_stat64 *target_st;
7397 #else
7398 struct target_stat *target_st;
7399 #endif
7400
7401 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7402 return -TARGET_EFAULT;
7403 memset(target_st, 0, sizeof(*target_st));
7404 __put_user(host_st->st_dev, &target_st->st_dev);
7405 __put_user(host_st->st_ino, &target_st->st_ino);
7406 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7407 __put_user(host_st->st_ino, &target_st->__st_ino);
7408 #endif
7409 __put_user(host_st->st_mode, &target_st->st_mode);
7410 __put_user(host_st->st_nlink, &target_st->st_nlink);
7411 __put_user(host_st->st_uid, &target_st->st_uid);
7412 __put_user(host_st->st_gid, &target_st->st_gid);
7413 __put_user(host_st->st_rdev, &target_st->st_rdev);
7414 /* XXX: better use of kernel struct */
7415 __put_user(host_st->st_size, &target_st->st_size);
7416 __put_user(host_st->st_blksize, &target_st->st_blksize);
7417 __put_user(host_st->st_blocks, &target_st->st_blocks);
7418 __put_user(host_st->st_atime, &target_st->target_st_atime);
7419 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7420 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7421 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
7422 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7423 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7424 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7425 #endif
7426 unlock_user_struct(target_st, target_addr, 1);
7427 }
7428
7429 return 0;
7430 }
7431 #endif
7432
7433 #if defined(TARGET_NR_statx) && defined(__NR_statx)
7434 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
7435 abi_ulong target_addr)
7436 {
7437 struct target_statx *target_stx;
7438
7439 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
7440 return -TARGET_EFAULT;
7441 }
7442 memset(target_stx, 0, sizeof(*target_stx));
7443
7444 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
7445 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
7446 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
7447 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
7448 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
7449 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
7450 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
7451 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
7452 __put_user(host_stx->stx_size, &target_stx->stx_size);
7453 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
7454 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
7455 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
7456 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
7457 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
7458 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
7459 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
7460 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
7461 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
7462 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
7463 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
7464 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
7465 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
7466 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
7467
7468 unlock_user_struct(target_stx, target_addr, 1);
7469
7470 return 0;
7471 }
7472 #endif
7473
7474 static int do_sys_futex(int *uaddr, int op, int val,
7475 const struct timespec *timeout, int *uaddr2,
7476 int val3)
7477 {
7478 #if HOST_LONG_BITS == 64
7479 #if defined(__NR_futex)
7480 /* always a 64-bit time_t, it doesn't define _time64 version */
7481 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7482
7483 #endif
7484 #else /* HOST_LONG_BITS == 64 */
7485 #if defined(__NR_futex_time64)
7486 if (sizeof(timeout->tv_sec) == 8) {
7487 /* _time64 function on 32bit arch */
7488 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
7489 }
7490 #endif
7491 #if defined(__NR_futex)
7492 /* old function on 32bit arch */
7493 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7494 #endif
7495 #endif /* HOST_LONG_BITS == 64 */
7496 g_assert_not_reached();
7497 }
7498
7499 static int do_safe_futex(int *uaddr, int op, int val,
7500 const struct timespec *timeout, int *uaddr2,
7501 int val3)
7502 {
7503 #if HOST_LONG_BITS == 64
7504 #if defined(__NR_futex)
7505 /* always a 64-bit time_t, it doesn't define _time64 version */
7506 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7507 #endif
7508 #else /* HOST_LONG_BITS == 64 */
7509 #if defined(__NR_futex_time64)
7510 if (sizeof(timeout->tv_sec) == 8) {
7511 /* _time64 function on 32bit arch */
7512 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
7513 val3));
7514 }
7515 #endif
7516 #if defined(__NR_futex)
7517 /* old function on 32bit arch */
7518 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7519 #endif
7520 #endif /* HOST_LONG_BITS == 64 */
7521 return -TARGET_ENOSYS;
7522 }
7523
7524 /* ??? Using host futex calls even when target atomic operations
7525 are not really atomic probably breaks things. However implementing
7526 futexes locally would make futexes shared between multiple processes
7527 tricky. However they're probably useless because guest atomic
7528 operations won't work either. */
7529 #if defined(TARGET_NR_futex)
7530 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
7531 target_ulong uaddr2, int val3)
7532 {
7533 struct timespec ts, *pts;
7534 int base_op;
7535
7536 /* ??? We assume FUTEX_* constants are the same on both host
7537 and target. */
7538 #ifdef FUTEX_CMD_MASK
7539 base_op = op & FUTEX_CMD_MASK;
7540 #else
7541 base_op = op;
7542 #endif
7543 switch (base_op) {
7544 case FUTEX_WAIT:
7545 case FUTEX_WAIT_BITSET:
7546 if (timeout) {
7547 pts = &ts;
7548 target_to_host_timespec(pts, timeout);
7549 } else {
7550 pts = NULL;
7551 }
7552 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3);
7553 case FUTEX_WAKE:
7554 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7555 case FUTEX_FD:
7556 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7557 case FUTEX_REQUEUE:
7558 case FUTEX_CMP_REQUEUE:
7559 case FUTEX_WAKE_OP:
7560 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7561 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7562 But the prototype takes a `struct timespec *'; insert casts
7563 to satisfy the compiler. We do not need to tswap TIMEOUT
7564 since it's not compared to guest memory. */
7565 pts = (struct timespec *)(uintptr_t) timeout;
7566 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2),
7567 (base_op == FUTEX_CMP_REQUEUE
7568 ? tswap32(val3)
7569 : val3));
7570 default:
7571 return -TARGET_ENOSYS;
7572 }
7573 }
7574 #endif
7575
7576 #if defined(TARGET_NR_futex_time64)
7577 static int do_futex_time64(target_ulong uaddr, int op, int val, target_ulong timeout,
7578 target_ulong uaddr2, int val3)
7579 {
7580 struct timespec ts, *pts;
7581 int base_op;
7582
7583 /* ??? We assume FUTEX_* constants are the same on both host
7584 and target. */
7585 #ifdef FUTEX_CMD_MASK
7586 base_op = op & FUTEX_CMD_MASK;
7587 #else
7588 base_op = op;
7589 #endif
7590 switch (base_op) {
7591 case FUTEX_WAIT:
7592 case FUTEX_WAIT_BITSET:
7593 if (timeout) {
7594 pts = &ts;
7595 if (target_to_host_timespec64(pts, timeout)) {
7596 return -TARGET_EFAULT;
7597 }
7598 } else {
7599 pts = NULL;
7600 }
7601 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3);
7602 case FUTEX_WAKE:
7603 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7604 case FUTEX_FD:
7605 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7606 case FUTEX_REQUEUE:
7607 case FUTEX_CMP_REQUEUE:
7608 case FUTEX_WAKE_OP:
7609 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7610 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7611 But the prototype takes a `struct timespec *'; insert casts
7612 to satisfy the compiler. We do not need to tswap TIMEOUT
7613 since it's not compared to guest memory. */
7614 pts = (struct timespec *)(uintptr_t) timeout;
7615 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2),
7616 (base_op == FUTEX_CMP_REQUEUE
7617 ? tswap32(val3)
7618 : val3));
7619 default:
7620 return -TARGET_ENOSYS;
7621 }
7622 }
7623 #endif
7624
7625 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7626 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7627 abi_long handle, abi_long mount_id,
7628 abi_long flags)
7629 {
7630 struct file_handle *target_fh;
7631 struct file_handle *fh;
7632 int mid = 0;
7633 abi_long ret;
7634 char *name;
7635 unsigned int size, total_size;
7636
7637 if (get_user_s32(size, handle)) {
7638 return -TARGET_EFAULT;
7639 }
7640
7641 name = lock_user_string(pathname);
7642 if (!name) {
7643 return -TARGET_EFAULT;
7644 }
7645
7646 total_size = sizeof(struct file_handle) + size;
7647 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7648 if (!target_fh) {
7649 unlock_user(name, pathname, 0);
7650 return -TARGET_EFAULT;
7651 }
7652
7653 fh = g_malloc0(total_size);
7654 fh->handle_bytes = size;
7655
7656 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7657 unlock_user(name, pathname, 0);
7658
7659 /* man name_to_handle_at(2):
7660 * Other than the use of the handle_bytes field, the caller should treat
7661 * the file_handle structure as an opaque data type
7662 */
7663
7664 memcpy(target_fh, fh, total_size);
7665 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7666 target_fh->handle_type = tswap32(fh->handle_type);
7667 g_free(fh);
7668 unlock_user(target_fh, handle, total_size);
7669
7670 if (put_user_s32(mid, mount_id)) {
7671 return -TARGET_EFAULT;
7672 }
7673
7674 return ret;
7675
7676 }
7677 #endif
7678
7679 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7680 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7681 abi_long flags)
7682 {
7683 struct file_handle *target_fh;
7684 struct file_handle *fh;
7685 unsigned int size, total_size;
7686 abi_long ret;
7687
7688 if (get_user_s32(size, handle)) {
7689 return -TARGET_EFAULT;
7690 }
7691
7692 total_size = sizeof(struct file_handle) + size;
7693 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7694 if (!target_fh) {
7695 return -TARGET_EFAULT;
7696 }
7697
7698 fh = g_memdup(target_fh, total_size);
7699 fh->handle_bytes = size;
7700 fh->handle_type = tswap32(target_fh->handle_type);
7701
7702 ret = get_errno(open_by_handle_at(mount_fd, fh,
7703 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7704
7705 g_free(fh);
7706
7707 unlock_user(target_fh, handle, total_size);
7708
7709 return ret;
7710 }
7711 #endif
7712
7713 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7714
7715 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7716 {
7717 int host_flags;
7718 target_sigset_t *target_mask;
7719 sigset_t host_mask;
7720 abi_long ret;
7721
7722 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
7723 return -TARGET_EINVAL;
7724 }
7725 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7726 return -TARGET_EFAULT;
7727 }
7728
7729 target_to_host_sigset(&host_mask, target_mask);
7730
7731 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7732
7733 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7734 if (ret >= 0) {
7735 fd_trans_register(ret, &target_signalfd_trans);
7736 }
7737
7738 unlock_user_struct(target_mask, mask, 0);
7739
7740 return ret;
7741 }
7742 #endif
7743
7744 /* Map host to target signal numbers for the wait family of syscalls.
7745 Assume all other status bits are the same. */
7746 int host_to_target_waitstatus(int status)
7747 {
7748 if (WIFSIGNALED(status)) {
7749 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7750 }
7751 if (WIFSTOPPED(status)) {
7752 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7753 | (status & 0xff);
7754 }
7755 return status;
7756 }
7757
7758 static int open_self_cmdline(void *cpu_env, int fd)
7759 {
7760 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7761 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
7762 int i;
7763
7764 for (i = 0; i < bprm->argc; i++) {
7765 size_t len = strlen(bprm->argv[i]) + 1;
7766
7767 if (write(fd, bprm->argv[i], len) != len) {
7768 return -1;
7769 }
7770 }
7771
7772 return 0;
7773 }
7774
7775 static int open_self_maps(void *cpu_env, int fd)
7776 {
7777 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7778 TaskState *ts = cpu->opaque;
7779 GSList *map_info = read_self_maps();
7780 GSList *s;
7781 int count;
7782
7783 for (s = map_info; s; s = g_slist_next(s)) {
7784 MapInfo *e = (MapInfo *) s->data;
7785
7786 if (h2g_valid(e->start)) {
7787 unsigned long min = e->start;
7788 unsigned long max = e->end;
7789 int flags = page_get_flags(h2g(min));
7790 const char *path;
7791
7792 max = h2g_valid(max - 1) ?
7793 max : (uintptr_t) g2h(GUEST_ADDR_MAX) + 1;
7794
7795 if (page_check_range(h2g(min), max - min, flags) == -1) {
7796 continue;
7797 }
7798
7799 if (h2g(min) == ts->info->stack_limit) {
7800 path = "[stack]";
7801 } else {
7802 path = e->path;
7803 }
7804
7805 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
7806 " %c%c%c%c %08" PRIx64 " %s %"PRId64,
7807 h2g(min), h2g(max - 1) + 1,
7808 e->is_read ? 'r' : '-',
7809 e->is_write ? 'w' : '-',
7810 e->is_exec ? 'x' : '-',
7811 e->is_priv ? 'p' : '-',
7812 (uint64_t) e->offset, e->dev, e->inode);
7813 if (path) {
7814 dprintf(fd, "%*s%s\n", 73 - count, "", path);
7815 } else {
7816 dprintf(fd, "\n");
7817 }
7818 }
7819 }
7820
7821 free_self_maps(map_info);
7822
7823 #ifdef TARGET_VSYSCALL_PAGE
7824 /*
7825 * We only support execution from the vsyscall page.
7826 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
7827 */
7828 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
7829 " --xp 00000000 00:00 0",
7830 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
7831 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
7832 #endif
7833
7834 return 0;
7835 }
7836
7837 static int open_self_stat(void *cpu_env, int fd)
7838 {
7839 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7840 TaskState *ts = cpu->opaque;
7841 g_autoptr(GString) buf = g_string_new(NULL);
7842 int i;
7843
7844 for (i = 0; i < 44; i++) {
7845 if (i == 0) {
7846 /* pid */
7847 g_string_printf(buf, FMT_pid " ", getpid());
7848 } else if (i == 1) {
7849 /* app name */
7850 gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
7851 bin = bin ? bin + 1 : ts->bprm->argv[0];
7852 g_string_printf(buf, "(%.15s) ", bin);
7853 } else if (i == 27) {
7854 /* stack bottom */
7855 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
7856 } else {
7857 /* for the rest, there is MasterCard */
7858 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
7859 }
7860
7861 if (write(fd, buf->str, buf->len) != buf->len) {
7862 return -1;
7863 }
7864 }
7865
7866 return 0;
7867 }
7868
7869 static int open_self_auxv(void *cpu_env, int fd)
7870 {
7871 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7872 TaskState *ts = cpu->opaque;
7873 abi_ulong auxv = ts->info->saved_auxv;
7874 abi_ulong len = ts->info->auxv_len;
7875 char *ptr;
7876
7877 /*
7878 * Auxiliary vector is stored in target process stack.
7879 * read in whole auxv vector and copy it to file
7880 */
7881 ptr = lock_user(VERIFY_READ, auxv, len, 0);
7882 if (ptr != NULL) {
7883 while (len > 0) {
7884 ssize_t r;
7885 r = write(fd, ptr, len);
7886 if (r <= 0) {
7887 break;
7888 }
7889 len -= r;
7890 ptr += r;
7891 }
7892 lseek(fd, 0, SEEK_SET);
7893 unlock_user(ptr, auxv, len);
7894 }
7895
7896 return 0;
7897 }
7898
7899 static int is_proc_myself(const char *filename, const char *entry)
7900 {
7901 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
7902 filename += strlen("/proc/");
7903 if (!strncmp(filename, "self/", strlen("self/"))) {
7904 filename += strlen("self/");
7905 } else if (*filename >= '1' && *filename <= '9') {
7906 char myself[80];
7907 snprintf(myself, sizeof(myself), "%d/", getpid());
7908 if (!strncmp(filename, myself, strlen(myself))) {
7909 filename += strlen(myself);
7910 } else {
7911 return 0;
7912 }
7913 } else {
7914 return 0;
7915 }
7916 if (!strcmp(filename, entry)) {
7917 return 1;
7918 }
7919 }
7920 return 0;
7921 }
7922
7923 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
7924 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
7925 static int is_proc(const char *filename, const char *entry)
7926 {
7927 return strcmp(filename, entry) == 0;
7928 }
7929 #endif
7930
7931 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7932 static int open_net_route(void *cpu_env, int fd)
7933 {
7934 FILE *fp;
7935 char *line = NULL;
7936 size_t len = 0;
7937 ssize_t read;
7938
7939 fp = fopen("/proc/net/route", "r");
7940 if (fp == NULL) {
7941 return -1;
7942 }
7943
7944 /* read header */
7945
7946 read = getline(&line, &len, fp);
7947 dprintf(fd, "%s", line);
7948
7949 /* read routes */
7950
7951 while ((read = getline(&line, &len, fp)) != -1) {
7952 char iface[16];
7953 uint32_t dest, gw, mask;
7954 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
7955 int fields;
7956
7957 fields = sscanf(line,
7958 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7959 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
7960 &mask, &mtu, &window, &irtt);
7961 if (fields != 11) {
7962 continue;
7963 }
7964 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7965 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
7966 metric, tswap32(mask), mtu, window, irtt);
7967 }
7968
7969 free(line);
7970 fclose(fp);
7971
7972 return 0;
7973 }
7974 #endif
7975
7976 #if defined(TARGET_SPARC)
7977 static int open_cpuinfo(void *cpu_env, int fd)
7978 {
7979 dprintf(fd, "type\t\t: sun4u\n");
7980 return 0;
7981 }
7982 #endif
7983
7984 #if defined(TARGET_HPPA)
7985 static int open_cpuinfo(void *cpu_env, int fd)
7986 {
7987 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
7988 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
7989 dprintf(fd, "capabilities\t: os32\n");
7990 dprintf(fd, "model\t\t: 9000/778/B160L\n");
7991 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
7992 return 0;
7993 }
7994 #endif
7995
7996 #if defined(TARGET_M68K)
7997 static int open_hardware(void *cpu_env, int fd)
7998 {
7999 dprintf(fd, "Model:\t\tqemu-m68k\n");
8000 return 0;
8001 }
8002 #endif
8003
8004 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
8005 {
8006 struct fake_open {
8007 const char *filename;
8008 int (*fill)(void *cpu_env, int fd);
8009 int (*cmp)(const char *s1, const char *s2);
8010 };
8011 const struct fake_open *fake_open;
8012 static const struct fake_open fakes[] = {
8013 { "maps", open_self_maps, is_proc_myself },
8014 { "stat", open_self_stat, is_proc_myself },
8015 { "auxv", open_self_auxv, is_proc_myself },
8016 { "cmdline", open_self_cmdline, is_proc_myself },
8017 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
8018 { "/proc/net/route", open_net_route, is_proc },
8019 #endif
8020 #if defined(TARGET_SPARC) || defined(TARGET_HPPA)
8021 { "/proc/cpuinfo", open_cpuinfo, is_proc },
8022 #endif
8023 #if defined(TARGET_M68K)
8024 { "/proc/hardware", open_hardware, is_proc },
8025 #endif
8026 { NULL, NULL, NULL }
8027 };
8028
8029 if (is_proc_myself(pathname, "exe")) {
8030 int execfd = qemu_getauxval(AT_EXECFD);
8031 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
8032 }
8033
8034 for (fake_open = fakes; fake_open->filename; fake_open++) {
8035 if (fake_open->cmp(pathname, fake_open->filename)) {
8036 break;
8037 }
8038 }
8039
8040 if (fake_open->filename) {
8041 const char *tmpdir;
8042 char filename[PATH_MAX];
8043 int fd, r;
8044
8045 /* create temporary file to map stat to */
8046 tmpdir = getenv("TMPDIR");
8047 if (!tmpdir)
8048 tmpdir = "/tmp";
8049 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
8050 fd = mkstemp(filename);
8051 if (fd < 0) {
8052 return fd;
8053 }
8054 unlink(filename);
8055
8056 if ((r = fake_open->fill(cpu_env, fd))) {
8057 int e = errno;
8058 close(fd);
8059 errno = e;
8060 return r;
8061 }
8062 lseek(fd, 0, SEEK_SET);
8063
8064 return fd;
8065 }
8066
8067 return safe_openat(dirfd, path(pathname), flags, mode);
8068 }
8069
8070 #define TIMER_MAGIC 0x0caf0000
8071 #define TIMER_MAGIC_MASK 0xffff0000
8072
8073 /* Convert QEMU provided timer ID back to internal 16bit index format */
8074 static target_timer_t get_timer_id(abi_long arg)
8075 {
8076 target_timer_t timerid = arg;
8077
8078 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
8079 return -TARGET_EINVAL;
8080 }
8081
8082 timerid &= 0xffff;
8083
8084 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
8085 return -TARGET_EINVAL;
8086 }
8087
8088 return timerid;
8089 }
8090
8091 static int target_to_host_cpu_mask(unsigned long *host_mask,
8092 size_t host_size,
8093 abi_ulong target_addr,
8094 size_t target_size)
8095 {
8096 unsigned target_bits = sizeof(abi_ulong) * 8;
8097 unsigned host_bits = sizeof(*host_mask) * 8;
8098 abi_ulong *target_mask;
8099 unsigned i, j;
8100
8101 assert(host_size >= target_size);
8102
8103 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
8104 if (!target_mask) {
8105 return -TARGET_EFAULT;
8106 }
8107 memset(host_mask, 0, host_size);
8108
8109 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8110 unsigned bit = i * target_bits;
8111 abi_ulong val;
8112
8113 __get_user(val, &target_mask[i]);
8114 for (j = 0; j < target_bits; j++, bit++) {
8115 if (val & (1UL << j)) {
8116 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
8117 }
8118 }
8119 }
8120
8121 unlock_user(target_mask, target_addr, 0);
8122 return 0;
8123 }
8124
8125 static int host_to_target_cpu_mask(const unsigned long *host_mask,
8126 size_t host_size,
8127 abi_ulong target_addr,
8128 size_t target_size)
8129 {
8130 unsigned target_bits = sizeof(abi_ulong) * 8;
8131 unsigned host_bits = sizeof(*host_mask) * 8;
8132 abi_ulong *target_mask;
8133 unsigned i, j;
8134
8135 assert(host_size >= target_size);
8136
8137 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
8138 if (!target_mask) {
8139 return -TARGET_EFAULT;
8140 }
8141
8142 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8143 unsigned bit = i * target_bits;
8144 abi_ulong val = 0;
8145
8146 for (j = 0; j < target_bits; j++, bit++) {
8147 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
8148 val |= 1UL << j;
8149 }
8150 }
8151 __put_user(val, &target_mask[i]);
8152 }
8153
8154 unlock_user(target_mask, target_addr, target_size);
8155 return 0;
8156 }
8157
8158 /* This is an internal helper for do_syscall so that it is easier
8159 * to have a single return point, so that actions, such as logging
8160 * of syscall results, can be performed.
8161 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
8162 */
8163 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
8164 abi_long arg2, abi_long arg3, abi_long arg4,
8165 abi_long arg5, abi_long arg6, abi_long arg7,
8166 abi_long arg8)
8167 {
8168 CPUState *cpu = env_cpu(cpu_env);
8169 abi_long ret;
8170 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
8171 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
8172 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
8173 || defined(TARGET_NR_statx)
8174 struct stat st;
8175 #endif
8176 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
8177 || defined(TARGET_NR_fstatfs)
8178 struct statfs stfs;
8179 #endif
8180 void *p;
8181
8182 switch(num) {
8183 case TARGET_NR_exit:
8184 /* In old applications this may be used to implement _exit(2).
8185 However in threaded applications it is used for thread termination,
8186 and _exit_group is used for application termination.
8187 Do thread termination if we have more then one thread. */
8188
8189 if (block_signals()) {
8190 return -TARGET_ERESTARTSYS;
8191 }
8192
8193 pthread_mutex_lock(&clone_lock);
8194
8195 if (CPU_NEXT(first_cpu)) {
8196 TaskState *ts = cpu->opaque;
8197
8198 object_property_set_bool(OBJECT(cpu), "realized", false, NULL);
8199 object_unref(OBJECT(cpu));
8200 /*
8201 * At this point the CPU should be unrealized and removed
8202 * from cpu lists. We can clean-up the rest of the thread
8203 * data without the lock held.
8204 */
8205
8206 pthread_mutex_unlock(&clone_lock);
8207
8208 if (ts->child_tidptr) {
8209 put_user_u32(0, ts->child_tidptr);
8210 do_sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
8211 NULL, NULL, 0);
8212 }
8213 thread_cpu = NULL;
8214 g_free(ts);
8215 rcu_unregister_thread();
8216 pthread_exit(NULL);
8217 }
8218
8219 pthread_mutex_unlock(&clone_lock);
8220 preexit_cleanup(cpu_env, arg1);
8221 _exit(arg1);
8222 return 0; /* avoid warning */
8223 case TARGET_NR_read:
8224 if (arg2 == 0 && arg3 == 0) {
8225 return get_errno(safe_read(arg1, 0, 0));
8226 } else {
8227 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
8228 return -TARGET_EFAULT;
8229 ret = get_errno(safe_read(arg1, p, arg3));
8230 if (ret >= 0 &&
8231 fd_trans_host_to_target_data(arg1)) {
8232 ret = fd_trans_host_to_target_data(arg1)(p, ret);
8233 }
8234 unlock_user(p, arg2, ret);
8235 }
8236 return ret;
8237 case TARGET_NR_write:
8238 if (arg2 == 0 && arg3 == 0) {
8239 return get_errno(safe_write(arg1, 0, 0));
8240 }
8241 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
8242 return -TARGET_EFAULT;
8243 if (fd_trans_target_to_host_data(arg1)) {
8244 void *copy = g_malloc(arg3);
8245 memcpy(copy, p, arg3);
8246 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
8247 if (ret >= 0) {
8248 ret = get_errno(safe_write(arg1, copy, ret));
8249 }
8250 g_free(copy);
8251 } else {
8252 ret = get_errno(safe_write(arg1, p, arg3));
8253 }
8254 unlock_user(p, arg2, 0);
8255 return ret;
8256
8257 #ifdef TARGET_NR_open
8258 case TARGET_NR_open:
8259 if (!(p = lock_user_string(arg1)))
8260 return -TARGET_EFAULT;
8261 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
8262 target_to_host_bitmask(arg2, fcntl_flags_tbl),
8263 arg3));
8264 fd_trans_unregister(ret);
8265 unlock_user(p, arg1, 0);
8266 return ret;
8267 #endif
8268 case TARGET_NR_openat:
8269 if (!(p = lock_user_string(arg2)))
8270 return -TARGET_EFAULT;
8271 ret = get_errno(do_openat(cpu_env, arg1, p,
8272 target_to_host_bitmask(arg3, fcntl_flags_tbl),
8273 arg4));
8274 fd_trans_unregister(ret);
8275 unlock_user(p, arg2, 0);
8276 return ret;
8277 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8278 case TARGET_NR_name_to_handle_at:
8279 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
8280 return ret;
8281 #endif
8282 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8283 case TARGET_NR_open_by_handle_at:
8284 ret = do_open_by_handle_at(arg1, arg2, arg3);
8285 fd_trans_unregister(ret);
8286 return ret;
8287 #endif
8288 case TARGET_NR_close:
8289 fd_trans_unregister(arg1);
8290 return get_errno(close(arg1));
8291
8292 case TARGET_NR_brk:
8293 return do_brk(arg1);
8294 #ifdef TARGET_NR_fork
8295 case TARGET_NR_fork:
8296 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
8297 #endif
8298 #ifdef TARGET_NR_waitpid
8299 case TARGET_NR_waitpid:
8300 {
8301 int status;
8302 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
8303 if (!is_error(ret) && arg2 && ret
8304 && put_user_s32(host_to_target_waitstatus(status), arg2))
8305 return -TARGET_EFAULT;
8306 }
8307 return ret;
8308 #endif
8309 #ifdef TARGET_NR_waitid
8310 case TARGET_NR_waitid:
8311 {
8312 siginfo_t info;
8313 info.si_pid = 0;
8314 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
8315 if (!is_error(ret) && arg3 && info.si_pid != 0) {
8316 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
8317 return -TARGET_EFAULT;
8318 host_to_target_siginfo(p, &info);
8319 unlock_user(p, arg3, sizeof(target_siginfo_t));
8320 }
8321 }
8322 return ret;
8323 #endif
8324 #ifdef TARGET_NR_creat /* not on alpha */
8325 case TARGET_NR_creat:
8326 if (!(p = lock_user_string(arg1)))
8327 return -TARGET_EFAULT;
8328 ret = get_errno(creat(p, arg2));
8329 fd_trans_unregister(ret);
8330 unlock_user(p, arg1, 0);
8331 return ret;
8332 #endif
8333 #ifdef TARGET_NR_link
8334 case TARGET_NR_link:
8335 {
8336 void * p2;
8337 p = lock_user_string(arg1);
8338 p2 = lock_user_string(arg2);
8339 if (!p || !p2)
8340 ret = -TARGET_EFAULT;
8341 else
8342 ret = get_errno(link(p, p2));
8343 unlock_user(p2, arg2, 0);
8344 unlock_user(p, arg1, 0);
8345 }
8346 return ret;
8347 #endif
8348 #if defined(TARGET_NR_linkat)
8349 case TARGET_NR_linkat:
8350 {
8351 void * p2 = NULL;
8352 if (!arg2 || !arg4)
8353 return -TARGET_EFAULT;
8354 p = lock_user_string(arg2);
8355 p2 = lock_user_string(arg4);
8356 if (!p || !p2)
8357 ret = -TARGET_EFAULT;
8358 else
8359 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
8360 unlock_user(p, arg2, 0);
8361 unlock_user(p2, arg4, 0);
8362 }
8363 return ret;
8364 #endif
8365 #ifdef TARGET_NR_unlink
8366 case TARGET_NR_unlink:
8367 if (!(p = lock_user_string(arg1)))
8368 return -TARGET_EFAULT;
8369 ret = get_errno(unlink(p));
8370 unlock_user(p, arg1, 0);
8371 return ret;
8372 #endif
8373 #if defined(TARGET_NR_unlinkat)
8374 case TARGET_NR_unlinkat:
8375 if (!(p = lock_user_string(arg2)))
8376 return -TARGET_EFAULT;
8377 ret = get_errno(unlinkat(arg1, p, arg3));
8378 unlock_user(p, arg2, 0);
8379 return ret;
8380 #endif
8381 case TARGET_NR_execve:
8382 {
8383 char **argp, **envp;
8384 int argc, envc;
8385 abi_ulong gp;
8386 abi_ulong guest_argp;
8387 abi_ulong guest_envp;
8388 abi_ulong addr;
8389 char **q;
8390 int total_size = 0;
8391
8392 argc = 0;
8393 guest_argp = arg2;
8394 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
8395 if (get_user_ual(addr, gp))
8396 return -TARGET_EFAULT;
8397 if (!addr)
8398 break;
8399 argc++;
8400 }
8401 envc = 0;
8402 guest_envp = arg3;
8403 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
8404 if (get_user_ual(addr, gp))
8405 return -TARGET_EFAULT;
8406 if (!addr)
8407 break;
8408 envc++;
8409 }
8410
8411 argp = g_new0(char *, argc + 1);
8412 envp = g_new0(char *, envc + 1);
8413
8414 for (gp = guest_argp, q = argp; gp;
8415 gp += sizeof(abi_ulong), q++) {
8416 if (get_user_ual(addr, gp))
8417 goto execve_efault;
8418 if (!addr)
8419 break;
8420 if (!(*q = lock_user_string(addr)))
8421 goto execve_efault;
8422 total_size += strlen(*q) + 1;
8423 }
8424 *q = NULL;
8425
8426 for (gp = guest_envp, q = envp; gp;
8427 gp += sizeof(abi_ulong), q++) {
8428 if (get_user_ual(addr, gp))
8429 goto execve_efault;
8430 if (!addr)
8431 break;
8432 if (!(*q = lock_user_string(addr)))
8433 goto execve_efault;
8434 total_size += strlen(*q) + 1;
8435 }
8436 *q = NULL;
8437
8438 if (!(p = lock_user_string(arg1)))
8439 goto execve_efault;
8440 /* Although execve() is not an interruptible syscall it is
8441 * a special case where we must use the safe_syscall wrapper:
8442 * if we allow a signal to happen before we make the host
8443 * syscall then we will 'lose' it, because at the point of
8444 * execve the process leaves QEMU's control. So we use the
8445 * safe syscall wrapper to ensure that we either take the
8446 * signal as a guest signal, or else it does not happen
8447 * before the execve completes and makes it the other
8448 * program's problem.
8449 */
8450 ret = get_errno(safe_execve(p, argp, envp));
8451 unlock_user(p, arg1, 0);
8452
8453 goto execve_end;
8454
8455 execve_efault:
8456 ret = -TARGET_EFAULT;
8457
8458 execve_end:
8459 for (gp = guest_argp, q = argp; *q;
8460 gp += sizeof(abi_ulong), q++) {
8461 if (get_user_ual(addr, gp)
8462 || !addr)
8463 break;
8464 unlock_user(*q, addr, 0);
8465 }
8466 for (gp = guest_envp, q = envp; *q;
8467 gp += sizeof(abi_ulong), q++) {
8468 if (get_user_ual(addr, gp)
8469 || !addr)
8470 break;
8471 unlock_user(*q, addr, 0);
8472 }
8473
8474 g_free(argp);
8475 g_free(envp);
8476 }
8477 return ret;
8478 case TARGET_NR_chdir:
8479 if (!(p = lock_user_string(arg1)))
8480 return -TARGET_EFAULT;
8481 ret = get_errno(chdir(p));
8482 unlock_user(p, arg1, 0);
8483 return ret;
8484 #ifdef TARGET_NR_time
8485 case TARGET_NR_time:
8486 {
8487 time_t host_time;
8488 ret = get_errno(time(&host_time));
8489 if (!is_error(ret)
8490 && arg1
8491 && put_user_sal(host_time, arg1))
8492 return -TARGET_EFAULT;
8493 }
8494 return ret;
8495 #endif
8496 #ifdef TARGET_NR_mknod
8497 case TARGET_NR_mknod:
8498 if (!(p = lock_user_string(arg1)))
8499 return -TARGET_EFAULT;
8500 ret = get_errno(mknod(p, arg2, arg3));
8501 unlock_user(p, arg1, 0);
8502 return ret;
8503 #endif
8504 #if defined(TARGET_NR_mknodat)
8505 case TARGET_NR_mknodat:
8506 if (!(p = lock_user_string(arg2)))
8507 return -TARGET_EFAULT;
8508 ret = get_errno(mknodat(arg1, p, arg3, arg4));
8509 unlock_user(p, arg2, 0);
8510 return ret;
8511 #endif
8512 #ifdef TARGET_NR_chmod
8513 case TARGET_NR_chmod:
8514 if (!(p = lock_user_string(arg1)))
8515 return -TARGET_EFAULT;
8516 ret = get_errno(chmod(p, arg2));
8517 unlock_user(p, arg1, 0);
8518 return ret;
8519 #endif
8520 #ifdef TARGET_NR_lseek
8521 case TARGET_NR_lseek:
8522 return get_errno(lseek(arg1, arg2, arg3));
8523 #endif
8524 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
8525 /* Alpha specific */
8526 case TARGET_NR_getxpid:
8527 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
8528 return get_errno(getpid());
8529 #endif
8530 #ifdef TARGET_NR_getpid
8531 case TARGET_NR_getpid:
8532 return get_errno(getpid());
8533 #endif
8534 case TARGET_NR_mount:
8535 {
8536 /* need to look at the data field */
8537 void *p2, *p3;
8538
8539 if (arg1) {
8540 p = lock_user_string(arg1);
8541 if (!p) {
8542 return -TARGET_EFAULT;
8543 }
8544 } else {
8545 p = NULL;
8546 }
8547
8548 p2 = lock_user_string(arg2);
8549 if (!p2) {
8550 if (arg1) {
8551 unlock_user(p, arg1, 0);
8552 }
8553 return -TARGET_EFAULT;
8554 }
8555
8556 if (arg3) {
8557 p3 = lock_user_string(arg3);
8558 if (!p3) {
8559 if (arg1) {
8560 unlock_user(p, arg1, 0);
8561 }
8562 unlock_user(p2, arg2, 0);
8563 return -TARGET_EFAULT;
8564 }
8565 } else {
8566 p3 = NULL;
8567 }
8568
8569 /* FIXME - arg5 should be locked, but it isn't clear how to
8570 * do that since it's not guaranteed to be a NULL-terminated
8571 * string.
8572 */
8573 if (!arg5) {
8574 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
8575 } else {
8576 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
8577 }
8578 ret = get_errno(ret);
8579
8580 if (arg1) {
8581 unlock_user(p, arg1, 0);
8582 }
8583 unlock_user(p2, arg2, 0);
8584 if (arg3) {
8585 unlock_user(p3, arg3, 0);
8586 }
8587 }
8588 return ret;
8589 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount)
8590 #if defined(TARGET_NR_umount)
8591 case TARGET_NR_umount:
8592 #endif
8593 #if defined(TARGET_NR_oldumount)
8594 case TARGET_NR_oldumount:
8595 #endif
8596 if (!(p = lock_user_string(arg1)))
8597 return -TARGET_EFAULT;
8598 ret = get_errno(umount(p));
8599 unlock_user(p, arg1, 0);
8600 return ret;
8601 #endif
8602 #ifdef TARGET_NR_stime /* not on alpha */
8603 case TARGET_NR_stime:
8604 {
8605 struct timespec ts;
8606 ts.tv_nsec = 0;
8607 if (get_user_sal(ts.tv_sec, arg1)) {
8608 return -TARGET_EFAULT;
8609 }
8610 return get_errno(clock_settime(CLOCK_REALTIME, &ts));
8611 }
8612 #endif
8613 #ifdef TARGET_NR_alarm /* not on alpha */
8614 case TARGET_NR_alarm:
8615 return alarm(arg1);
8616 #endif
8617 #ifdef TARGET_NR_pause /* not on alpha */
8618 case TARGET_NR_pause:
8619 if (!block_signals()) {
8620 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
8621 }
8622 return -TARGET_EINTR;
8623 #endif
8624 #ifdef TARGET_NR_utime
8625 case TARGET_NR_utime:
8626 {
8627 struct utimbuf tbuf, *host_tbuf;
8628 struct target_utimbuf *target_tbuf;
8629 if (arg2) {
8630 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
8631 return -TARGET_EFAULT;
8632 tbuf.actime = tswapal(target_tbuf->actime);
8633 tbuf.modtime = tswapal(target_tbuf->modtime);
8634 unlock_user_struct(target_tbuf, arg2, 0);
8635 host_tbuf = &tbuf;
8636 } else {
8637 host_tbuf = NULL;
8638 }
8639 if (!(p = lock_user_string(arg1)))
8640 return -TARGET_EFAULT;
8641 ret = get_errno(utime(p, host_tbuf));
8642 unlock_user(p, arg1, 0);
8643 }
8644 return ret;
8645 #endif
8646 #ifdef TARGET_NR_utimes
8647 case TARGET_NR_utimes:
8648 {
8649 struct timeval *tvp, tv[2];
8650 if (arg2) {
8651 if (copy_from_user_timeval(&tv[0], arg2)
8652 || copy_from_user_timeval(&tv[1],
8653 arg2 + sizeof(struct target_timeval)))
8654 return -TARGET_EFAULT;
8655 tvp = tv;
8656 } else {
8657 tvp = NULL;
8658 }
8659 if (!(p = lock_user_string(arg1)))
8660 return -TARGET_EFAULT;
8661 ret = get_errno(utimes(p, tvp));
8662 unlock_user(p, arg1, 0);
8663 }
8664 return ret;
8665 #endif
8666 #if defined(TARGET_NR_futimesat)
8667 case TARGET_NR_futimesat:
8668 {
8669 struct timeval *tvp, tv[2];
8670 if (arg3) {
8671 if (copy_from_user_timeval(&tv[0], arg3)
8672 || copy_from_user_timeval(&tv[1],
8673 arg3 + sizeof(struct target_timeval)))
8674 return -TARGET_EFAULT;
8675 tvp = tv;
8676 } else {
8677 tvp = NULL;
8678 }
8679 if (!(p = lock_user_string(arg2))) {
8680 return -TARGET_EFAULT;
8681 }
8682 ret = get_errno(futimesat(arg1, path(p), tvp));
8683 unlock_user(p, arg2, 0);
8684 }
8685 return ret;
8686 #endif
8687 #ifdef TARGET_NR_access
8688 case TARGET_NR_access:
8689 if (!(p = lock_user_string(arg1))) {
8690 return -TARGET_EFAULT;
8691 }
8692 ret = get_errno(access(path(p), arg2));
8693 unlock_user(p, arg1, 0);
8694 return ret;
8695 #endif
8696 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
8697 case TARGET_NR_faccessat:
8698 if (!(p = lock_user_string(arg2))) {
8699 return -TARGET_EFAULT;
8700 }
8701 ret = get_errno(faccessat(arg1, p, arg3, 0));
8702 unlock_user(p, arg2, 0);
8703 return ret;
8704 #endif
8705 #ifdef TARGET_NR_nice /* not on alpha */
8706 case TARGET_NR_nice:
8707 return get_errno(nice(arg1));
8708 #endif
8709 case TARGET_NR_sync:
8710 sync();
8711 return 0;
8712 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
8713 case TARGET_NR_syncfs:
8714 return get_errno(syncfs(arg1));
8715 #endif
8716 case TARGET_NR_kill:
8717 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
8718 #ifdef TARGET_NR_rename
8719 case TARGET_NR_rename:
8720 {
8721 void *p2;
8722 p = lock_user_string(arg1);
8723 p2 = lock_user_string(arg2);
8724 if (!p || !p2)
8725 ret = -TARGET_EFAULT;
8726 else
8727 ret = get_errno(rename(p, p2));
8728 unlock_user(p2, arg2, 0);
8729 unlock_user(p, arg1, 0);
8730 }
8731 return ret;
8732 #endif
8733 #if defined(TARGET_NR_renameat)
8734 case TARGET_NR_renameat:
8735 {
8736 void *p2;
8737 p = lock_user_string(arg2);
8738 p2 = lock_user_string(arg4);
8739 if (!p || !p2)
8740 ret = -TARGET_EFAULT;
8741 else
8742 ret = get_errno(renameat(arg1, p, arg3, p2));
8743 unlock_user(p2, arg4, 0);
8744 unlock_user(p, arg2, 0);
8745 }
8746 return ret;
8747 #endif
8748 #if defined(TARGET_NR_renameat2)
8749 case TARGET_NR_renameat2:
8750 {
8751 void *p2;
8752 p = lock_user_string(arg2);
8753 p2 = lock_user_string(arg4);
8754 if (!p || !p2) {
8755 ret = -TARGET_EFAULT;
8756 } else {
8757 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
8758 }
8759 unlock_user(p2, arg4, 0);
8760 unlock_user(p, arg2, 0);
8761 }
8762 return ret;
8763 #endif
8764 #ifdef TARGET_NR_mkdir
8765 case TARGET_NR_mkdir:
8766 if (!(p = lock_user_string(arg1)))
8767 return -TARGET_EFAULT;
8768 ret = get_errno(mkdir(p, arg2));
8769 unlock_user(p, arg1, 0);
8770 return ret;
8771 #endif
8772 #if defined(TARGET_NR_mkdirat)
8773 case TARGET_NR_mkdirat:
8774 if (!(p = lock_user_string(arg2)))
8775 return -TARGET_EFAULT;
8776 ret = get_errno(mkdirat(arg1, p, arg3));
8777 unlock_user(p, arg2, 0);
8778 return ret;
8779 #endif
8780 #ifdef TARGET_NR_rmdir
8781 case TARGET_NR_rmdir:
8782 if (!(p = lock_user_string(arg1)))
8783 return -TARGET_EFAULT;
8784 ret = get_errno(rmdir(p));
8785 unlock_user(p, arg1, 0);
8786 return ret;
8787 #endif
8788 case TARGET_NR_dup:
8789 ret = get_errno(dup(arg1));
8790 if (ret >= 0) {
8791 fd_trans_dup(arg1, ret);
8792 }
8793 return ret;
8794 #ifdef TARGET_NR_pipe
8795 case TARGET_NR_pipe:
8796 return do_pipe(cpu_env, arg1, 0, 0);
8797 #endif
8798 #ifdef TARGET_NR_pipe2
8799 case TARGET_NR_pipe2:
8800 return do_pipe(cpu_env, arg1,
8801 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
8802 #endif
8803 case TARGET_NR_times:
8804 {
8805 struct target_tms *tmsp;
8806 struct tms tms;
8807 ret = get_errno(times(&tms));
8808 if (arg1) {
8809 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
8810 if (!tmsp)
8811 return -TARGET_EFAULT;
8812 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
8813 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
8814 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
8815 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
8816 }
8817 if (!is_error(ret))
8818 ret = host_to_target_clock_t(ret);
8819 }
8820 return ret;
8821 case TARGET_NR_acct:
8822 if (arg1 == 0) {
8823 ret = get_errno(acct(NULL));
8824 } else {
8825 if (!(p = lock_user_string(arg1))) {
8826 return -TARGET_EFAULT;
8827 }
8828 ret = get_errno(acct(path(p)));
8829 unlock_user(p, arg1, 0);
8830 }
8831 return ret;
8832 #ifdef TARGET_NR_umount2
8833 case TARGET_NR_umount2:
8834 if (!(p = lock_user_string(arg1)))
8835 return -TARGET_EFAULT;
8836 ret = get_errno(umount2(p, arg2));
8837 unlock_user(p, arg1, 0);
8838 return ret;
8839 #endif
8840 case TARGET_NR_ioctl:
8841 return do_ioctl(arg1, arg2, arg3);
8842 #ifdef TARGET_NR_fcntl
8843 case TARGET_NR_fcntl:
8844 return do_fcntl(arg1, arg2, arg3);
8845 #endif
8846 case TARGET_NR_setpgid:
8847 return get_errno(setpgid(arg1, arg2));
8848 case TARGET_NR_umask:
8849 return get_errno(umask(arg1));
8850 case TARGET_NR_chroot:
8851 if (!(p = lock_user_string(arg1)))
8852 return -TARGET_EFAULT;
8853 ret = get_errno(chroot(p));
8854 unlock_user(p, arg1, 0);
8855 return ret;
8856 #ifdef TARGET_NR_dup2
8857 case TARGET_NR_dup2:
8858 ret = get_errno(dup2(arg1, arg2));
8859 if (ret >= 0) {
8860 fd_trans_dup(arg1, arg2);
8861 }
8862 return ret;
8863 #endif
8864 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
8865 case TARGET_NR_dup3:
8866 {
8867 int host_flags;
8868
8869 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
8870 return -EINVAL;
8871 }
8872 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
8873 ret = get_errno(dup3(arg1, arg2, host_flags));
8874 if (ret >= 0) {
8875 fd_trans_dup(arg1, arg2);
8876 }
8877 return ret;
8878 }
8879 #endif
8880 #ifdef TARGET_NR_getppid /* not on alpha */
8881 case TARGET_NR_getppid:
8882 return get_errno(getppid());
8883 #endif
8884 #ifdef TARGET_NR_getpgrp
8885 case TARGET_NR_getpgrp:
8886 return get_errno(getpgrp());
8887 #endif
8888 case TARGET_NR_setsid:
8889 return get_errno(setsid());
8890 #ifdef TARGET_NR_sigaction
8891 case TARGET_NR_sigaction:
8892 {
8893 #if defined(TARGET_ALPHA)
8894 struct target_sigaction act, oact, *pact = 0;
8895 struct target_old_sigaction *old_act;
8896 if (arg2) {
8897 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8898 return -TARGET_EFAULT;
8899 act._sa_handler = old_act->_sa_handler;
8900 target_siginitset(&act.sa_mask, old_act->sa_mask);
8901 act.sa_flags = old_act->sa_flags;
8902 act.sa_restorer = 0;
8903 unlock_user_struct(old_act, arg2, 0);
8904 pact = &act;
8905 }
8906 ret = get_errno(do_sigaction(arg1, pact, &oact));
8907 if (!is_error(ret) && arg3) {
8908 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8909 return -TARGET_EFAULT;
8910 old_act->_sa_handler = oact._sa_handler;
8911 old_act->sa_mask = oact.sa_mask.sig[0];
8912 old_act->sa_flags = oact.sa_flags;
8913 unlock_user_struct(old_act, arg3, 1);
8914 }
8915 #elif defined(TARGET_MIPS)
8916 struct target_sigaction act, oact, *pact, *old_act;
8917
8918 if (arg2) {
8919 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8920 return -TARGET_EFAULT;
8921 act._sa_handler = old_act->_sa_handler;
8922 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
8923 act.sa_flags = old_act->sa_flags;
8924 unlock_user_struct(old_act, arg2, 0);
8925 pact = &act;
8926 } else {
8927 pact = NULL;
8928 }
8929
8930 ret = get_errno(do_sigaction(arg1, pact, &oact));
8931
8932 if (!is_error(ret) && arg3) {
8933 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8934 return -TARGET_EFAULT;
8935 old_act->_sa_handler = oact._sa_handler;
8936 old_act->sa_flags = oact.sa_flags;
8937 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
8938 old_act->sa_mask.sig[1] = 0;
8939 old_act->sa_mask.sig[2] = 0;
8940 old_act->sa_mask.sig[3] = 0;
8941 unlock_user_struct(old_act, arg3, 1);
8942 }
8943 #else
8944 struct target_old_sigaction *old_act;
8945 struct target_sigaction act, oact, *pact;
8946 if (arg2) {
8947 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8948 return -TARGET_EFAULT;
8949 act._sa_handler = old_act->_sa_handler;
8950 target_siginitset(&act.sa_mask, old_act->sa_mask);
8951 act.sa_flags = old_act->sa_flags;
8952 act.sa_restorer = old_act->sa_restorer;
8953 #ifdef TARGET_ARCH_HAS_KA_RESTORER
8954 act.ka_restorer = 0;
8955 #endif
8956 unlock_user_struct(old_act, arg2, 0);
8957 pact = &act;
8958 } else {
8959 pact = NULL;
8960 }
8961 ret = get_errno(do_sigaction(arg1, pact, &oact));
8962 if (!is_error(ret) && arg3) {
8963 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8964 return -TARGET_EFAULT;
8965 old_act->_sa_handler = oact._sa_handler;
8966 old_act->sa_mask = oact.sa_mask.sig[0];
8967 old_act->sa_flags = oact.sa_flags;
8968 old_act->sa_restorer = oact.sa_restorer;
8969 unlock_user_struct(old_act, arg3, 1);
8970 }
8971 #endif
8972 }
8973 return ret;
8974 #endif
8975 case TARGET_NR_rt_sigaction:
8976 {
8977 #if defined(TARGET_ALPHA)
8978 /* For Alpha and SPARC this is a 5 argument syscall, with
8979 * a 'restorer' parameter which must be copied into the
8980 * sa_restorer field of the sigaction struct.
8981 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
8982 * and arg5 is the sigsetsize.
8983 * Alpha also has a separate rt_sigaction struct that it uses
8984 * here; SPARC uses the usual sigaction struct.
8985 */
8986 struct target_rt_sigaction *rt_act;
8987 struct target_sigaction act, oact, *pact = 0;
8988
8989 if (arg4 != sizeof(target_sigset_t)) {
8990 return -TARGET_EINVAL;
8991 }
8992 if (arg2) {
8993 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
8994 return -TARGET_EFAULT;
8995 act._sa_handler = rt_act->_sa_handler;
8996 act.sa_mask = rt_act->sa_mask;
8997 act.sa_flags = rt_act->sa_flags;
8998 act.sa_restorer = arg5;
8999 unlock_user_struct(rt_act, arg2, 0);
9000 pact = &act;
9001 }
9002 ret = get_errno(do_sigaction(arg1, pact, &oact));
9003 if (!is_error(ret) && arg3) {
9004 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
9005 return -TARGET_EFAULT;
9006 rt_act->_sa_handler = oact._sa_handler;
9007 rt_act->sa_mask = oact.sa_mask;
9008 rt_act->sa_flags = oact.sa_flags;
9009 unlock_user_struct(rt_act, arg3, 1);
9010 }
9011 #else
9012 #ifdef TARGET_SPARC
9013 target_ulong restorer = arg4;
9014 target_ulong sigsetsize = arg5;
9015 #else
9016 target_ulong sigsetsize = arg4;
9017 #endif
9018 struct target_sigaction *act;
9019 struct target_sigaction *oact;
9020
9021 if (sigsetsize != sizeof(target_sigset_t)) {
9022 return -TARGET_EINVAL;
9023 }
9024 if (arg2) {
9025 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
9026 return -TARGET_EFAULT;
9027 }
9028 #ifdef TARGET_ARCH_HAS_KA_RESTORER
9029 act->ka_restorer = restorer;
9030 #endif
9031 } else {
9032 act = NULL;
9033 }
9034 if (arg3) {
9035 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
9036 ret = -TARGET_EFAULT;
9037 goto rt_sigaction_fail;
9038 }
9039 } else
9040 oact = NULL;
9041 ret = get_errno(do_sigaction(arg1, act, oact));
9042 rt_sigaction_fail:
9043 if (act)
9044 unlock_user_struct(act, arg2, 0);
9045 if (oact)
9046 unlock_user_struct(oact, arg3, 1);
9047 #endif
9048 }
9049 return ret;
9050 #ifdef TARGET_NR_sgetmask /* not on alpha */
9051 case TARGET_NR_sgetmask:
9052 {
9053 sigset_t cur_set;
9054 abi_ulong target_set;
9055 ret = do_sigprocmask(0, NULL, &cur_set);
9056 if (!ret) {
9057 host_to_target_old_sigset(&target_set, &cur_set);
9058 ret = target_set;
9059 }
9060 }
9061 return ret;
9062 #endif
9063 #ifdef TARGET_NR_ssetmask /* not on alpha */
9064 case TARGET_NR_ssetmask:
9065 {
9066 sigset_t set, oset;
9067 abi_ulong target_set = arg1;
9068 target_to_host_old_sigset(&set, &target_set);
9069 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
9070 if (!ret) {
9071 host_to_target_old_sigset(&target_set, &oset);
9072 ret = target_set;
9073 }
9074 }
9075 return ret;
9076 #endif
9077 #ifdef TARGET_NR_sigprocmask
9078 case TARGET_NR_sigprocmask:
9079 {
9080 #if defined(TARGET_ALPHA)
9081 sigset_t set, oldset;
9082 abi_ulong mask;
9083 int how;
9084
9085 switch (arg1) {
9086 case TARGET_SIG_BLOCK:
9087 how = SIG_BLOCK;
9088 break;
9089 case TARGET_SIG_UNBLOCK:
9090 how = SIG_UNBLOCK;
9091 break;
9092 case TARGET_SIG_SETMASK:
9093 how = SIG_SETMASK;
9094 break;
9095 default:
9096 return -TARGET_EINVAL;
9097 }
9098 mask = arg2;
9099 target_to_host_old_sigset(&set, &mask);
9100
9101 ret = do_sigprocmask(how, &set, &oldset);
9102 if (!is_error(ret)) {
9103 host_to_target_old_sigset(&mask, &oldset);
9104 ret = mask;
9105 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
9106 }
9107 #else
9108 sigset_t set, oldset, *set_ptr;
9109 int how;
9110
9111 if (arg2) {
9112 switch (arg1) {
9113 case TARGET_SIG_BLOCK:
9114 how = SIG_BLOCK;
9115 break;
9116 case TARGET_SIG_UNBLOCK:
9117 how = SIG_UNBLOCK;
9118 break;
9119 case TARGET_SIG_SETMASK:
9120 how = SIG_SETMASK;
9121 break;
9122 default:
9123 return -TARGET_EINVAL;
9124 }
9125 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
9126 return -TARGET_EFAULT;
9127 target_to_host_old_sigset(&set, p);
9128 unlock_user(p, arg2, 0);
9129 set_ptr = &set;
9130 } else {
9131 how = 0;
9132 set_ptr = NULL;
9133 }
9134 ret = do_sigprocmask(how, set_ptr, &oldset);
9135 if (!is_error(ret) && arg3) {
9136 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9137 return -TARGET_EFAULT;
9138 host_to_target_old_sigset(p, &oldset);
9139 unlock_user(p, arg3, sizeof(target_sigset_t));
9140 }
9141 #endif
9142 }
9143 return ret;
9144 #endif
9145 case TARGET_NR_rt_sigprocmask:
9146 {
9147 int how = arg1;
9148 sigset_t set, oldset, *set_ptr;
9149
9150 if (arg4 != sizeof(target_sigset_t)) {
9151 return -TARGET_EINVAL;
9152 }
9153
9154 if (arg2) {
9155 switch(how) {
9156 case TARGET_SIG_BLOCK:
9157 how = SIG_BLOCK;
9158 break;
9159 case TARGET_SIG_UNBLOCK:
9160 how = SIG_UNBLOCK;
9161 break;
9162 case TARGET_SIG_SETMASK:
9163 how = SIG_SETMASK;
9164 break;
9165 default:
9166 return -TARGET_EINVAL;
9167 }
9168 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
9169 return -TARGET_EFAULT;
9170 target_to_host_sigset(&set, p);
9171 unlock_user(p, arg2, 0);
9172 set_ptr = &set;
9173 } else {
9174 how = 0;
9175 set_ptr = NULL;
9176 }
9177 ret = do_sigprocmask(how, set_ptr, &oldset);
9178 if (!is_error(ret) && arg3) {
9179 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9180 return -TARGET_EFAULT;
9181 host_to_target_sigset(p, &oldset);
9182 unlock_user(p, arg3, sizeof(target_sigset_t));
9183 }
9184 }
9185 return ret;
9186 #ifdef TARGET_NR_sigpending
9187 case TARGET_NR_sigpending:
9188 {
9189 sigset_t set;
9190 ret = get_errno(sigpending(&set));
9191 if (!is_error(ret)) {
9192 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9193 return -TARGET_EFAULT;
9194 host_to_target_old_sigset(p, &set);
9195 unlock_user(p, arg1, sizeof(target_sigset_t));
9196 }
9197 }
9198 return ret;
9199 #endif
9200 case TARGET_NR_rt_sigpending:
9201 {
9202 sigset_t set;
9203
9204 /* Yes, this check is >, not != like most. We follow the kernel's
9205 * logic and it does it like this because it implements
9206 * NR_sigpending through the same code path, and in that case
9207 * the old_sigset_t is smaller in size.
9208 */
9209 if (arg2 > sizeof(target_sigset_t)) {
9210 return -TARGET_EINVAL;
9211 }
9212
9213 ret = get_errno(sigpending(&set));
9214 if (!is_error(ret)) {
9215 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9216 return -TARGET_EFAULT;
9217 host_to_target_sigset(p, &set);
9218 unlock_user(p, arg1, sizeof(target_sigset_t));
9219 }
9220 }
9221 return ret;
9222 #ifdef TARGET_NR_sigsuspend
9223 case TARGET_NR_sigsuspend:
9224 {
9225 TaskState *ts = cpu->opaque;
9226 #if defined(TARGET_ALPHA)
9227 abi_ulong mask = arg1;
9228 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
9229 #else
9230 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9231 return -TARGET_EFAULT;
9232 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
9233 unlock_user(p, arg1, 0);
9234 #endif
9235 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
9236 SIGSET_T_SIZE));
9237 if (ret != -TARGET_ERESTARTSYS) {
9238 ts->in_sigsuspend = 1;
9239 }
9240 }
9241 return ret;
9242 #endif
9243 case TARGET_NR_rt_sigsuspend:
9244 {
9245 TaskState *ts = cpu->opaque;
9246
9247 if (arg2 != sizeof(target_sigset_t)) {
9248 return -TARGET_EINVAL;
9249 }
9250 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9251 return -TARGET_EFAULT;
9252 target_to_host_sigset(&ts->sigsuspend_mask, p);
9253 unlock_user(p, arg1, 0);
9254 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
9255 SIGSET_T_SIZE));
9256 if (ret != -TARGET_ERESTARTSYS) {
9257 ts->in_sigsuspend = 1;
9258 }
9259 }
9260 return ret;
9261 #ifdef TARGET_NR_rt_sigtimedwait
9262 case TARGET_NR_rt_sigtimedwait:
9263 {
9264 sigset_t set;
9265 struct timespec uts, *puts;
9266 siginfo_t uinfo;
9267
9268 if (arg4 != sizeof(target_sigset_t)) {
9269 return -TARGET_EINVAL;
9270 }
9271
9272 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9273 return -TARGET_EFAULT;
9274 target_to_host_sigset(&set, p);
9275 unlock_user(p, arg1, 0);
9276 if (arg3) {
9277 puts = &uts;
9278 if (target_to_host_timespec(puts, arg3)) {
9279 return -TARGET_EFAULT;
9280 }
9281 } else {
9282 puts = NULL;
9283 }
9284 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9285 SIGSET_T_SIZE));
9286 if (!is_error(ret)) {
9287 if (arg2) {
9288 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
9289 0);
9290 if (!p) {
9291 return -TARGET_EFAULT;
9292 }
9293 host_to_target_siginfo(p, &uinfo);
9294 unlock_user(p, arg2, sizeof(target_siginfo_t));
9295 }
9296 ret = host_to_target_signal(ret);
9297 }
9298 }
9299 return ret;
9300 #endif
9301 #ifdef TARGET_NR_rt_sigtimedwait_time64
9302 case TARGET_NR_rt_sigtimedwait_time64:
9303 {
9304 sigset_t set;
9305 struct timespec uts, *puts;
9306 siginfo_t uinfo;
9307
9308 if (arg4 != sizeof(target_sigset_t)) {
9309 return -TARGET_EINVAL;
9310 }
9311
9312 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
9313 if (!p) {
9314 return -TARGET_EFAULT;
9315 }
9316 target_to_host_sigset(&set, p);
9317 unlock_user(p, arg1, 0);
9318 if (arg3) {
9319 puts = &uts;
9320 if (target_to_host_timespec64(puts, arg3)) {
9321 return -TARGET_EFAULT;
9322 }
9323 } else {
9324 puts = NULL;
9325 }
9326 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9327 SIGSET_T_SIZE));
9328 if (!is_error(ret)) {
9329 if (arg2) {
9330 p = lock_user(VERIFY_WRITE, arg2,
9331 sizeof(target_siginfo_t), 0);
9332 if (!p) {
9333 return -TARGET_EFAULT;
9334 }
9335 host_to_target_siginfo(p, &uinfo);
9336 unlock_user(p, arg2, sizeof(target_siginfo_t));
9337 }
9338 ret = host_to_target_signal(ret);
9339 }
9340 }
9341 return ret;
9342 #endif
9343 case TARGET_NR_rt_sigqueueinfo:
9344 {
9345 siginfo_t uinfo;
9346
9347 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
9348 if (!p) {
9349 return -TARGET_EFAULT;
9350 }
9351 target_to_host_siginfo(&uinfo, p);
9352 unlock_user(p, arg3, 0);
9353 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
9354 }
9355 return ret;
9356 case TARGET_NR_rt_tgsigqueueinfo:
9357 {
9358 siginfo_t uinfo;
9359
9360 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
9361 if (!p) {
9362 return -TARGET_EFAULT;
9363 }
9364 target_to_host_siginfo(&uinfo, p);
9365 unlock_user(p, arg4, 0);
9366 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
9367 }
9368 return ret;
9369 #ifdef TARGET_NR_sigreturn
9370 case TARGET_NR_sigreturn:
9371 if (block_signals()) {
9372 return -TARGET_ERESTARTSYS;
9373 }
9374 return do_sigreturn(cpu_env);
9375 #endif
9376 case TARGET_NR_rt_sigreturn:
9377 if (block_signals()) {
9378 return -TARGET_ERESTARTSYS;
9379 }
9380 return do_rt_sigreturn(cpu_env);
9381 case TARGET_NR_sethostname:
9382 if (!(p = lock_user_string(arg1)))
9383 return -TARGET_EFAULT;
9384 ret = get_errno(sethostname(p, arg2));
9385 unlock_user(p, arg1, 0);
9386 return ret;
9387 #ifdef TARGET_NR_setrlimit
9388 case TARGET_NR_setrlimit:
9389 {
9390 int resource = target_to_host_resource(arg1);
9391 struct target_rlimit *target_rlim;
9392 struct rlimit rlim;
9393 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
9394 return -TARGET_EFAULT;
9395 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
9396 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
9397 unlock_user_struct(target_rlim, arg2, 0);
9398 /*
9399 * If we just passed through resource limit settings for memory then
9400 * they would also apply to QEMU's own allocations, and QEMU will
9401 * crash or hang or die if its allocations fail. Ideally we would
9402 * track the guest allocations in QEMU and apply the limits ourselves.
9403 * For now, just tell the guest the call succeeded but don't actually
9404 * limit anything.
9405 */
9406 if (resource != RLIMIT_AS &&
9407 resource != RLIMIT_DATA &&
9408 resource != RLIMIT_STACK) {
9409 return get_errno(setrlimit(resource, &rlim));
9410 } else {
9411 return 0;
9412 }
9413 }
9414 #endif
9415 #ifdef TARGET_NR_getrlimit
9416 case TARGET_NR_getrlimit:
9417 {
9418 int resource = target_to_host_resource(arg1);
9419 struct target_rlimit *target_rlim;
9420 struct rlimit rlim;
9421
9422 ret = get_errno(getrlimit(resource, &rlim));
9423 if (!is_error(ret)) {
9424 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
9425 return -TARGET_EFAULT;
9426 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
9427 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
9428 unlock_user_struct(target_rlim, arg2, 1);
9429 }
9430 }
9431 return ret;
9432 #endif
9433 case TARGET_NR_getrusage:
9434 {
9435 struct rusage rusage;
9436 ret = get_errno(getrusage(arg1, &rusage));
9437 if (!is_error(ret)) {
9438 ret = host_to_target_rusage(arg2, &rusage);
9439 }
9440 }
9441 return ret;
9442 #if defined(TARGET_NR_gettimeofday)
9443 case TARGET_NR_gettimeofday:
9444 {
9445 struct timeval tv;
9446 struct timezone tz;
9447
9448 ret = get_errno(gettimeofday(&tv, &tz));
9449 if (!is_error(ret)) {
9450 if (arg1 && copy_to_user_timeval(arg1, &tv)) {
9451 return -TARGET_EFAULT;
9452 }
9453 if (arg2 && copy_to_user_timezone(arg2, &tz)) {
9454 return -TARGET_EFAULT;
9455 }
9456 }
9457 }
9458 return ret;
9459 #endif
9460 #if defined(TARGET_NR_settimeofday)
9461 case TARGET_NR_settimeofday:
9462 {
9463 struct timeval tv, *ptv = NULL;
9464 struct timezone tz, *ptz = NULL;
9465
9466 if (arg1) {
9467 if (copy_from_user_timeval(&tv, arg1)) {
9468 return -TARGET_EFAULT;
9469 }
9470 ptv = &tv;
9471 }
9472
9473 if (arg2) {
9474 if (copy_from_user_timezone(&tz, arg2)) {
9475 return -TARGET_EFAULT;
9476 }
9477 ptz = &tz;
9478 }
9479
9480 return get_errno(settimeofday(ptv, ptz));
9481 }
9482 #endif
9483 #if defined(TARGET_NR_select)
9484 case TARGET_NR_select:
9485 #if defined(TARGET_WANT_NI_OLD_SELECT)
9486 /* some architectures used to have old_select here
9487 * but now ENOSYS it.
9488 */
9489 ret = -TARGET_ENOSYS;
9490 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
9491 ret = do_old_select(arg1);
9492 #else
9493 ret = do_select(arg1, arg2, arg3, arg4, arg5);
9494 #endif
9495 return ret;
9496 #endif
9497 #ifdef TARGET_NR_pselect6
9498 case TARGET_NR_pselect6:
9499 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false);
9500 #endif
9501 #ifdef TARGET_NR_pselect6_time64
9502 case TARGET_NR_pselect6_time64:
9503 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true);
9504 #endif
9505 #ifdef TARGET_NR_symlink
9506 case TARGET_NR_symlink:
9507 {
9508 void *p2;
9509 p = lock_user_string(arg1);
9510 p2 = lock_user_string(arg2);
9511 if (!p || !p2)
9512 ret = -TARGET_EFAULT;
9513 else
9514 ret = get_errno(symlink(p, p2));
9515 unlock_user(p2, arg2, 0);
9516 unlock_user(p, arg1, 0);
9517 }
9518 return ret;
9519 #endif
9520 #if defined(TARGET_NR_symlinkat)
9521 case TARGET_NR_symlinkat:
9522 {
9523 void *p2;
9524 p = lock_user_string(arg1);
9525 p2 = lock_user_string(arg3);
9526 if (!p || !p2)
9527 ret = -TARGET_EFAULT;
9528 else
9529 ret = get_errno(symlinkat(p, arg2, p2));
9530 unlock_user(p2, arg3, 0);
9531 unlock_user(p, arg1, 0);
9532 }
9533 return ret;
9534 #endif
9535 #ifdef TARGET_NR_readlink
9536 case TARGET_NR_readlink:
9537 {
9538 void *p2;
9539 p = lock_user_string(arg1);
9540 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9541 if (!p || !p2) {
9542 ret = -TARGET_EFAULT;
9543 } else if (!arg3) {
9544 /* Short circuit this for the magic exe check. */
9545 ret = -TARGET_EINVAL;
9546 } else if (is_proc_myself((const char *)p, "exe")) {
9547 char real[PATH_MAX], *temp;
9548 temp = realpath(exec_path, real);
9549 /* Return value is # of bytes that we wrote to the buffer. */
9550 if (temp == NULL) {
9551 ret = get_errno(-1);
9552 } else {
9553 /* Don't worry about sign mismatch as earlier mapping
9554 * logic would have thrown a bad address error. */
9555 ret = MIN(strlen(real), arg3);
9556 /* We cannot NUL terminate the string. */
9557 memcpy(p2, real, ret);
9558 }
9559 } else {
9560 ret = get_errno(readlink(path(p), p2, arg3));
9561 }
9562 unlock_user(p2, arg2, ret);
9563 unlock_user(p, arg1, 0);
9564 }
9565 return ret;
9566 #endif
9567 #if defined(TARGET_NR_readlinkat)
9568 case TARGET_NR_readlinkat:
9569 {
9570 void *p2;
9571 p = lock_user_string(arg2);
9572 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
9573 if (!p || !p2) {
9574 ret = -TARGET_EFAULT;
9575 } else if (is_proc_myself((const char *)p, "exe")) {
9576 char real[PATH_MAX], *temp;
9577 temp = realpath(exec_path, real);
9578 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
9579 snprintf((char *)p2, arg4, "%s", real);
9580 } else {
9581 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
9582 }
9583 unlock_user(p2, arg3, ret);
9584 unlock_user(p, arg2, 0);
9585 }
9586 return ret;
9587 #endif
9588 #ifdef TARGET_NR_swapon
9589 case TARGET_NR_swapon:
9590 if (!(p = lock_user_string(arg1)))
9591 return -TARGET_EFAULT;
9592 ret = get_errno(swapon(p, arg2));
9593 unlock_user(p, arg1, 0);
9594 return ret;
9595 #endif
9596 case TARGET_NR_reboot:
9597 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
9598 /* arg4 must be ignored in all other cases */
9599 p = lock_user_string(arg4);
9600 if (!p) {
9601 return -TARGET_EFAULT;
9602 }
9603 ret = get_errno(reboot(arg1, arg2, arg3, p));
9604 unlock_user(p, arg4, 0);
9605 } else {
9606 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
9607 }
9608 return ret;
9609 #ifdef TARGET_NR_mmap
9610 case TARGET_NR_mmap:
9611 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
9612 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
9613 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
9614 || defined(TARGET_S390X)
9615 {
9616 abi_ulong *v;
9617 abi_ulong v1, v2, v3, v4, v5, v6;
9618 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
9619 return -TARGET_EFAULT;
9620 v1 = tswapal(v[0]);
9621 v2 = tswapal(v[1]);
9622 v3 = tswapal(v[2]);
9623 v4 = tswapal(v[3]);
9624 v5 = tswapal(v[4]);
9625 v6 = tswapal(v[5]);
9626 unlock_user(v, arg1, 0);
9627 ret = get_errno(target_mmap(v1, v2, v3,
9628 target_to_host_bitmask(v4, mmap_flags_tbl),
9629 v5, v6));
9630 }
9631 #else
9632 ret = get_errno(target_mmap(arg1, arg2, arg3,
9633 target_to_host_bitmask(arg4, mmap_flags_tbl),
9634 arg5,
9635 arg6));
9636 #endif
9637 return ret;
9638 #endif
9639 #ifdef TARGET_NR_mmap2
9640 case TARGET_NR_mmap2:
9641 #ifndef MMAP_SHIFT
9642 #define MMAP_SHIFT 12
9643 #endif
9644 ret = target_mmap(arg1, arg2, arg3,
9645 target_to_host_bitmask(arg4, mmap_flags_tbl),
9646 arg5, arg6 << MMAP_SHIFT);
9647 return get_errno(ret);
9648 #endif
9649 case TARGET_NR_munmap:
9650 return get_errno(target_munmap(arg1, arg2));
9651 case TARGET_NR_mprotect:
9652 {
9653 TaskState *ts = cpu->opaque;
9654 /* Special hack to detect libc making the stack executable. */
9655 if ((arg3 & PROT_GROWSDOWN)
9656 && arg1 >= ts->info->stack_limit
9657 && arg1 <= ts->info->start_stack) {
9658 arg3 &= ~PROT_GROWSDOWN;
9659 arg2 = arg2 + arg1 - ts->info->stack_limit;
9660 arg1 = ts->info->stack_limit;
9661 }
9662 }
9663 return get_errno(target_mprotect(arg1, arg2, arg3));
9664 #ifdef TARGET_NR_mremap
9665 case TARGET_NR_mremap:
9666 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
9667 #endif
9668 /* ??? msync/mlock/munlock are broken for softmmu. */
9669 #ifdef TARGET_NR_msync
9670 case TARGET_NR_msync:
9671 return get_errno(msync(g2h(arg1), arg2, arg3));
9672 #endif
9673 #ifdef TARGET_NR_mlock
9674 case TARGET_NR_mlock:
9675 return get_errno(mlock(g2h(arg1), arg2));
9676 #endif
9677 #ifdef TARGET_NR_munlock
9678 case TARGET_NR_munlock:
9679 return get_errno(munlock(g2h(arg1), arg2));
9680 #endif
9681 #ifdef TARGET_NR_mlockall
9682 case TARGET_NR_mlockall:
9683 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
9684 #endif
9685 #ifdef TARGET_NR_munlockall
9686 case TARGET_NR_munlockall:
9687 return get_errno(munlockall());
9688 #endif
9689 #ifdef TARGET_NR_truncate
9690 case TARGET_NR_truncate:
9691 if (!(p = lock_user_string(arg1)))
9692 return -TARGET_EFAULT;
9693 ret = get_errno(truncate(p, arg2));
9694 unlock_user(p, arg1, 0);
9695 return ret;
9696 #endif
9697 #ifdef TARGET_NR_ftruncate
9698 case TARGET_NR_ftruncate:
9699 return get_errno(ftruncate(arg1, arg2));
9700 #endif
9701 case TARGET_NR_fchmod:
9702 return get_errno(fchmod(arg1, arg2));
9703 #if defined(TARGET_NR_fchmodat)
9704 case TARGET_NR_fchmodat:
9705 if (!(p = lock_user_string(arg2)))
9706 return -TARGET_EFAULT;
9707 ret = get_errno(fchmodat(arg1, p, arg3, 0));
9708 unlock_user(p, arg2, 0);
9709 return ret;
9710 #endif
9711 case TARGET_NR_getpriority:
9712 /* Note that negative values are valid for getpriority, so we must
9713 differentiate based on errno settings. */
9714 errno = 0;
9715 ret = getpriority(arg1, arg2);
9716 if (ret == -1 && errno != 0) {
9717 return -host_to_target_errno(errno);
9718 }
9719 #ifdef TARGET_ALPHA
9720 /* Return value is the unbiased priority. Signal no error. */
9721 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
9722 #else
9723 /* Return value is a biased priority to avoid negative numbers. */
9724 ret = 20 - ret;
9725 #endif
9726 return ret;
9727 case TARGET_NR_setpriority:
9728 return get_errno(setpriority(arg1, arg2, arg3));
9729 #ifdef TARGET_NR_statfs
9730 case TARGET_NR_statfs:
9731 if (!(p = lock_user_string(arg1))) {
9732 return -TARGET_EFAULT;
9733 }
9734 ret = get_errno(statfs(path(p), &stfs));
9735 unlock_user(p, arg1, 0);
9736 convert_statfs:
9737 if (!is_error(ret)) {
9738 struct target_statfs *target_stfs;
9739
9740 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
9741 return -TARGET_EFAULT;
9742 __put_user(stfs.f_type, &target_stfs->f_type);
9743 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9744 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9745 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9746 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9747 __put_user(stfs.f_files, &target_stfs->f_files);
9748 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9749 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9750 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9751 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9752 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9753 #ifdef _STATFS_F_FLAGS
9754 __put_user(stfs.f_flags, &target_stfs->f_flags);
9755 #else
9756 __put_user(0, &target_stfs->f_flags);
9757 #endif
9758 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9759 unlock_user_struct(target_stfs, arg2, 1);
9760 }
9761 return ret;
9762 #endif
9763 #ifdef TARGET_NR_fstatfs
9764 case TARGET_NR_fstatfs:
9765 ret = get_errno(fstatfs(arg1, &stfs));
9766 goto convert_statfs;
9767 #endif
9768 #ifdef TARGET_NR_statfs64
9769 case TARGET_NR_statfs64:
9770 if (!(p = lock_user_string(arg1))) {
9771 return -TARGET_EFAULT;
9772 }
9773 ret = get_errno(statfs(path(p), &stfs));
9774 unlock_user(p, arg1, 0);
9775 convert_statfs64:
9776 if (!is_error(ret)) {
9777 struct target_statfs64 *target_stfs;
9778
9779 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
9780 return -TARGET_EFAULT;
9781 __put_user(stfs.f_type, &target_stfs->f_type);
9782 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9783 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9784 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9785 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9786 __put_user(stfs.f_files, &target_stfs->f_files);
9787 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9788 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9789 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9790 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9791 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9792 #ifdef _STATFS_F_FLAGS
9793 __put_user(stfs.f_flags, &target_stfs->f_flags);
9794 #else
9795 __put_user(0, &target_stfs->f_flags);
9796 #endif
9797 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9798 unlock_user_struct(target_stfs, arg3, 1);
9799 }
9800 return ret;
9801 case TARGET_NR_fstatfs64:
9802 ret = get_errno(fstatfs(arg1, &stfs));
9803 goto convert_statfs64;
9804 #endif
9805 #ifdef TARGET_NR_socketcall
9806 case TARGET_NR_socketcall:
9807 return do_socketcall(arg1, arg2);
9808 #endif
9809 #ifdef TARGET_NR_accept
9810 case TARGET_NR_accept:
9811 return do_accept4(arg1, arg2, arg3, 0);
9812 #endif
9813 #ifdef TARGET_NR_accept4
9814 case TARGET_NR_accept4:
9815 return do_accept4(arg1, arg2, arg3, arg4);
9816 #endif
9817 #ifdef TARGET_NR_bind
9818 case TARGET_NR_bind:
9819 return do_bind(arg1, arg2, arg3);
9820 #endif
9821 #ifdef TARGET_NR_connect
9822 case TARGET_NR_connect:
9823 return do_connect(arg1, arg2, arg3);
9824 #endif
9825 #ifdef TARGET_NR_getpeername
9826 case TARGET_NR_getpeername:
9827 return do_getpeername(arg1, arg2, arg3);
9828 #endif
9829 #ifdef TARGET_NR_getsockname
9830 case TARGET_NR_getsockname:
9831 return do_getsockname(arg1, arg2, arg3);
9832 #endif
9833 #ifdef TARGET_NR_getsockopt
9834 case TARGET_NR_getsockopt:
9835 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
9836 #endif
9837 #ifdef TARGET_NR_listen
9838 case TARGET_NR_listen:
9839 return get_errno(listen(arg1, arg2));
9840 #endif
9841 #ifdef TARGET_NR_recv
9842 case TARGET_NR_recv:
9843 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
9844 #endif
9845 #ifdef TARGET_NR_recvfrom
9846 case TARGET_NR_recvfrom:
9847 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
9848 #endif
9849 #ifdef TARGET_NR_recvmsg
9850 case TARGET_NR_recvmsg:
9851 return do_sendrecvmsg(arg1, arg2, arg3, 0);
9852 #endif
9853 #ifdef TARGET_NR_send
9854 case TARGET_NR_send:
9855 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
9856 #endif
9857 #ifdef TARGET_NR_sendmsg
9858 case TARGET_NR_sendmsg:
9859 return do_sendrecvmsg(arg1, arg2, arg3, 1);
9860 #endif
9861 #ifdef TARGET_NR_sendmmsg
9862 case TARGET_NR_sendmmsg:
9863 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
9864 #endif
9865 #ifdef TARGET_NR_recvmmsg
9866 case TARGET_NR_recvmmsg:
9867 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
9868 #endif
9869 #ifdef TARGET_NR_sendto
9870 case TARGET_NR_sendto:
9871 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
9872 #endif
9873 #ifdef TARGET_NR_shutdown
9874 case TARGET_NR_shutdown:
9875 return get_errno(shutdown(arg1, arg2));
9876 #endif
9877 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
9878 case TARGET_NR_getrandom:
9879 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
9880 if (!p) {
9881 return -TARGET_EFAULT;
9882 }
9883 ret = get_errno(getrandom(p, arg2, arg3));
9884 unlock_user(p, arg1, ret);
9885 return ret;
9886 #endif
9887 #ifdef TARGET_NR_socket
9888 case TARGET_NR_socket:
9889 return do_socket(arg1, arg2, arg3);
9890 #endif
9891 #ifdef TARGET_NR_socketpair
9892 case TARGET_NR_socketpair:
9893 return do_socketpair(arg1, arg2, arg3, arg4);
9894 #endif
9895 #ifdef TARGET_NR_setsockopt
9896 case TARGET_NR_setsockopt:
9897 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
9898 #endif
9899 #if defined(TARGET_NR_syslog)
9900 case TARGET_NR_syslog:
9901 {
9902 int len = arg2;
9903
9904 switch (arg1) {
9905 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
9906 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
9907 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
9908 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
9909 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
9910 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
9911 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
9912 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
9913 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
9914 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
9915 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
9916 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
9917 {
9918 if (len < 0) {
9919 return -TARGET_EINVAL;
9920 }
9921 if (len == 0) {
9922 return 0;
9923 }
9924 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9925 if (!p) {
9926 return -TARGET_EFAULT;
9927 }
9928 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
9929 unlock_user(p, arg2, arg3);
9930 }
9931 return ret;
9932 default:
9933 return -TARGET_EINVAL;
9934 }
9935 }
9936 break;
9937 #endif
9938 case TARGET_NR_setitimer:
9939 {
9940 struct itimerval value, ovalue, *pvalue;
9941
9942 if (arg2) {
9943 pvalue = &value;
9944 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
9945 || copy_from_user_timeval(&pvalue->it_value,
9946 arg2 + sizeof(struct target_timeval)))
9947 return -TARGET_EFAULT;
9948 } else {
9949 pvalue = NULL;
9950 }
9951 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
9952 if (!is_error(ret) && arg3) {
9953 if (copy_to_user_timeval(arg3,
9954 &ovalue.it_interval)
9955 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
9956 &ovalue.it_value))
9957 return -TARGET_EFAULT;
9958 }
9959 }
9960 return ret;
9961 case TARGET_NR_getitimer:
9962 {
9963 struct itimerval value;
9964
9965 ret = get_errno(getitimer(arg1, &value));
9966 if (!is_error(ret) && arg2) {
9967 if (copy_to_user_timeval(arg2,
9968 &value.it_interval)
9969 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
9970 &value.it_value))
9971 return -TARGET_EFAULT;
9972 }
9973 }
9974 return ret;
9975 #ifdef TARGET_NR_stat
9976 case TARGET_NR_stat:
9977 if (!(p = lock_user_string(arg1))) {
9978 return -TARGET_EFAULT;
9979 }
9980 ret = get_errno(stat(path(p), &st));
9981 unlock_user(p, arg1, 0);
9982 goto do_stat;
9983 #endif
9984 #ifdef TARGET_NR_lstat
9985 case TARGET_NR_lstat:
9986 if (!(p = lock_user_string(arg1))) {
9987 return -TARGET_EFAULT;
9988 }
9989 ret = get_errno(lstat(path(p), &st));
9990 unlock_user(p, arg1, 0);
9991 goto do_stat;
9992 #endif
9993 #ifdef TARGET_NR_fstat
9994 case TARGET_NR_fstat:
9995 {
9996 ret = get_errno(fstat(arg1, &st));
9997 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
9998 do_stat:
9999 #endif
10000 if (!is_error(ret)) {
10001 struct target_stat *target_st;
10002
10003 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
10004 return -TARGET_EFAULT;
10005 memset(target_st, 0, sizeof(*target_st));
10006 __put_user(st.st_dev, &target_st->st_dev);
10007 __put_user(st.st_ino, &target_st->st_ino);
10008 __put_user(st.st_mode, &target_st->st_mode);
10009 __put_user(st.st_uid, &target_st->st_uid);
10010 __put_user(st.st_gid, &target_st->st_gid);
10011 __put_user(st.st_nlink, &target_st->st_nlink);
10012 __put_user(st.st_rdev, &target_st->st_rdev);
10013 __put_user(st.st_size, &target_st->st_size);
10014 __put_user(st.st_blksize, &target_st->st_blksize);
10015 __put_user(st.st_blocks, &target_st->st_blocks);
10016 __put_user(st.st_atime, &target_st->target_st_atime);
10017 __put_user(st.st_mtime, &target_st->target_st_mtime);
10018 __put_user(st.st_ctime, &target_st->target_st_ctime);
10019 #if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \
10020 defined(TARGET_STAT_HAVE_NSEC)
10021 __put_user(st.st_atim.tv_nsec,
10022 &target_st->target_st_atime_nsec);
10023 __put_user(st.st_mtim.tv_nsec,
10024 &target_st->target_st_mtime_nsec);
10025 __put_user(st.st_ctim.tv_nsec,
10026 &target_st->target_st_ctime_nsec);
10027 #endif
10028 unlock_user_struct(target_st, arg2, 1);
10029 }
10030 }
10031 return ret;
10032 #endif
10033 case TARGET_NR_vhangup:
10034 return get_errno(vhangup());
10035 #ifdef TARGET_NR_syscall
10036 case TARGET_NR_syscall:
10037 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
10038 arg6, arg7, arg8, 0);
10039 #endif
10040 #if defined(TARGET_NR_wait4)
10041 case TARGET_NR_wait4:
10042 {
10043 int status;
10044 abi_long status_ptr = arg2;
10045 struct rusage rusage, *rusage_ptr;
10046 abi_ulong target_rusage = arg4;
10047 abi_long rusage_err;
10048 if (target_rusage)
10049 rusage_ptr = &rusage;
10050 else
10051 rusage_ptr = NULL;
10052 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
10053 if (!is_error(ret)) {
10054 if (status_ptr && ret) {
10055 status = host_to_target_waitstatus(status);
10056 if (put_user_s32(status, status_ptr))
10057 return -TARGET_EFAULT;
10058 }
10059 if (target_rusage) {
10060 rusage_err = host_to_target_rusage(target_rusage, &rusage);
10061 if (rusage_err) {
10062 ret = rusage_err;
10063 }
10064 }
10065 }
10066 }
10067 return ret;
10068 #endif
10069 #ifdef TARGET_NR_swapoff
10070 case TARGET_NR_swapoff:
10071 if (!(p = lock_user_string(arg1)))
10072 return -TARGET_EFAULT;
10073 ret = get_errno(swapoff(p));
10074 unlock_user(p, arg1, 0);
10075 return ret;
10076 #endif
10077 case TARGET_NR_sysinfo:
10078 {
10079 struct target_sysinfo *target_value;
10080 struct sysinfo value;
10081 ret = get_errno(sysinfo(&value));
10082 if (!is_error(ret) && arg1)
10083 {
10084 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
10085 return -TARGET_EFAULT;
10086 __put_user(value.uptime, &target_value->uptime);
10087 __put_user(value.loads[0], &target_value->loads[0]);
10088 __put_user(value.loads[1], &target_value->loads[1]);
10089 __put_user(value.loads[2], &target_value->loads[2]);
10090 __put_user(value.totalram, &target_value->totalram);
10091 __put_user(value.freeram, &target_value->freeram);
10092 __put_user(value.sharedram, &target_value->sharedram);
10093 __put_user(value.bufferram, &target_value->bufferram);
10094 __put_user(value.totalswap, &target_value->totalswap);
10095 __put_user(value.freeswap, &target_value->freeswap);
10096 __put_user(value.procs, &target_value->procs);
10097 __put_user(value.totalhigh, &target_value->totalhigh);
10098 __put_user(value.freehigh, &target_value->freehigh);
10099 __put_user(value.mem_unit, &target_value->mem_unit);
10100 unlock_user_struct(target_value, arg1, 1);
10101 }
10102 }
10103 return ret;
10104 #ifdef TARGET_NR_ipc
10105 case TARGET_NR_ipc:
10106 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
10107 #endif
10108 #ifdef TARGET_NR_semget
10109 case TARGET_NR_semget:
10110 return get_errno(semget(arg1, arg2, arg3));
10111 #endif
10112 #ifdef TARGET_NR_semop
10113 case TARGET_NR_semop:
10114 return do_semtimedop(arg1, arg2, arg3, 0, false);
10115 #endif
10116 #ifdef TARGET_NR_semtimedop
10117 case TARGET_NR_semtimedop:
10118 return do_semtimedop(arg1, arg2, arg3, arg4, false);
10119 #endif
10120 #ifdef TARGET_NR_semtimedop_time64
10121 case TARGET_NR_semtimedop_time64:
10122 return do_semtimedop(arg1, arg2, arg3, arg4, true);
10123 #endif
10124 #ifdef TARGET_NR_semctl
10125 case TARGET_NR_semctl:
10126 return do_semctl(arg1, arg2, arg3, arg4);
10127 #endif
10128 #ifdef TARGET_NR_msgctl
10129 case TARGET_NR_msgctl:
10130 return do_msgctl(arg1, arg2, arg3);
10131 #endif
10132 #ifdef TARGET_NR_msgget
10133 case TARGET_NR_msgget:
10134 return get_errno(msgget(arg1, arg2));
10135 #endif
10136 #ifdef TARGET_NR_msgrcv
10137 case TARGET_NR_msgrcv:
10138 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
10139 #endif
10140 #ifdef TARGET_NR_msgsnd
10141 case TARGET_NR_msgsnd:
10142 return do_msgsnd(arg1, arg2, arg3, arg4);
10143 #endif
10144 #ifdef TARGET_NR_shmget
10145 case TARGET_NR_shmget:
10146 return get_errno(shmget(arg1, arg2, arg3));
10147 #endif
10148 #ifdef TARGET_NR_shmctl
10149 case TARGET_NR_shmctl:
10150 return do_shmctl(arg1, arg2, arg3);
10151 #endif
10152 #ifdef TARGET_NR_shmat
10153 case TARGET_NR_shmat:
10154 return do_shmat(cpu_env, arg1, arg2, arg3);
10155 #endif
10156 #ifdef TARGET_NR_shmdt
10157 case TARGET_NR_shmdt:
10158 return do_shmdt(arg1);
10159 #endif
10160 case TARGET_NR_fsync:
10161 return get_errno(fsync(arg1));
10162 case TARGET_NR_clone:
10163 /* Linux manages to have three different orderings for its
10164 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
10165 * match the kernel's CONFIG_CLONE_* settings.
10166 * Microblaze is further special in that it uses a sixth
10167 * implicit argument to clone for the TLS pointer.
10168 */
10169 #if defined(TARGET_MICROBLAZE)
10170 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
10171 #elif defined(TARGET_CLONE_BACKWARDS)
10172 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
10173 #elif defined(TARGET_CLONE_BACKWARDS2)
10174 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
10175 #else
10176 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
10177 #endif
10178 return ret;
10179 #ifdef __NR_exit_group
10180 /* new thread calls */
10181 case TARGET_NR_exit_group:
10182 preexit_cleanup(cpu_env, arg1);
10183 return get_errno(exit_group(arg1));
10184 #endif
10185 case TARGET_NR_setdomainname:
10186 if (!(p = lock_user_string(arg1)))
10187 return -TARGET_EFAULT;
10188 ret = get_errno(setdomainname(p, arg2));
10189 unlock_user(p, arg1, 0);
10190 return ret;
10191 case TARGET_NR_uname:
10192 /* no need to transcode because we use the linux syscall */
10193 {
10194 struct new_utsname * buf;
10195
10196 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
10197 return -TARGET_EFAULT;
10198 ret = get_errno(sys_uname(buf));
10199 if (!is_error(ret)) {
10200 /* Overwrite the native machine name with whatever is being
10201 emulated. */
10202 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
10203 sizeof(buf->machine));
10204 /* Allow the user to override the reported release. */
10205 if (qemu_uname_release && *qemu_uname_release) {
10206 g_strlcpy(buf->release, qemu_uname_release,
10207 sizeof(buf->release));
10208 }
10209 }
10210 unlock_user_struct(buf, arg1, 1);
10211 }
10212 return ret;
10213 #ifdef TARGET_I386
10214 case TARGET_NR_modify_ldt:
10215 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
10216 #if !defined(TARGET_X86_64)
10217 case TARGET_NR_vm86:
10218 return do_vm86(cpu_env, arg1, arg2);
10219 #endif
10220 #endif
10221 #if defined(TARGET_NR_adjtimex)
10222 case TARGET_NR_adjtimex:
10223 {
10224 struct timex host_buf;
10225
10226 if (target_to_host_timex(&host_buf, arg1) != 0) {
10227 return -TARGET_EFAULT;
10228 }
10229 ret = get_errno(adjtimex(&host_buf));
10230 if (!is_error(ret)) {
10231 if (host_to_target_timex(arg1, &host_buf) != 0) {
10232 return -TARGET_EFAULT;
10233 }
10234 }
10235 }
10236 return ret;
10237 #endif
10238 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
10239 case TARGET_NR_clock_adjtime:
10240 {
10241 struct timex htx, *phtx = &htx;
10242
10243 if (target_to_host_timex(phtx, arg2) != 0) {
10244 return -TARGET_EFAULT;
10245 }
10246 ret = get_errno(clock_adjtime(arg1, phtx));
10247 if (!is_error(ret) && phtx) {
10248 if (host_to_target_timex(arg2, phtx) != 0) {
10249 return -TARGET_EFAULT;
10250 }
10251 }
10252 }
10253 return ret;
10254 #endif
10255 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
10256 case TARGET_NR_clock_adjtime64:
10257 {
10258 struct timex htx;
10259
10260 if (target_to_host_timex64(&htx, arg2) != 0) {
10261 return -TARGET_EFAULT;
10262 }
10263 ret = get_errno(clock_adjtime(arg1, &htx));
10264 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) {
10265 return -TARGET_EFAULT;
10266 }
10267 }
10268 return ret;
10269 #endif
10270 case TARGET_NR_getpgid:
10271 return get_errno(getpgid(arg1));
10272 case TARGET_NR_fchdir:
10273 return get_errno(fchdir(arg1));
10274 case TARGET_NR_personality:
10275 return get_errno(personality(arg1));
10276 #ifdef TARGET_NR__llseek /* Not on alpha */
10277 case TARGET_NR__llseek:
10278 {
10279 int64_t res;
10280 #if !defined(__NR_llseek)
10281 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
10282 if (res == -1) {
10283 ret = get_errno(res);
10284 } else {
10285 ret = 0;
10286 }
10287 #else
10288 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
10289 #endif
10290 if ((ret == 0) && put_user_s64(res, arg4)) {
10291 return -TARGET_EFAULT;
10292 }
10293 }
10294 return ret;
10295 #endif
10296 #ifdef TARGET_NR_getdents
10297 case TARGET_NR_getdents:
10298 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
10299 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
10300 {
10301 struct target_dirent *target_dirp;
10302 struct linux_dirent *dirp;
10303 abi_long count = arg3;
10304
10305 dirp = g_try_malloc(count);
10306 if (!dirp) {
10307 return -TARGET_ENOMEM;
10308 }
10309
10310 ret = get_errno(sys_getdents(arg1, dirp, count));
10311 if (!is_error(ret)) {
10312 struct linux_dirent *de;
10313 struct target_dirent *tde;
10314 int len = ret;
10315 int reclen, treclen;
10316 int count1, tnamelen;
10317
10318 count1 = 0;
10319 de = dirp;
10320 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
10321 return -TARGET_EFAULT;
10322 tde = target_dirp;
10323 while (len > 0) {
10324 reclen = de->d_reclen;
10325 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
10326 assert(tnamelen >= 0);
10327 treclen = tnamelen + offsetof(struct target_dirent, d_name);
10328 assert(count1 + treclen <= count);
10329 tde->d_reclen = tswap16(treclen);
10330 tde->d_ino = tswapal(de->d_ino);
10331 tde->d_off = tswapal(de->d_off);
10332 memcpy(tde->d_name, de->d_name, tnamelen);
10333 de = (struct linux_dirent *)((char *)de + reclen);
10334 len -= reclen;
10335 tde = (struct target_dirent *)((char *)tde + treclen);
10336 count1 += treclen;
10337 }
10338 ret = count1;
10339 unlock_user(target_dirp, arg2, ret);
10340 }
10341 g_free(dirp);
10342 }
10343 #else
10344 {
10345 struct linux_dirent *dirp;
10346 abi_long count = arg3;
10347
10348 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
10349 return -TARGET_EFAULT;
10350 ret = get_errno(sys_getdents(arg1, dirp, count));
10351 if (!is_error(ret)) {
10352 struct linux_dirent *de;
10353 int len = ret;
10354 int reclen;
10355 de = dirp;
10356 while (len > 0) {
10357 reclen = de->d_reclen;
10358 if (reclen > len)
10359 break;
10360 de->d_reclen = tswap16(reclen);
10361 tswapls(&de->d_ino);
10362 tswapls(&de->d_off);
10363 de = (struct linux_dirent *)((char *)de + reclen);
10364 len -= reclen;
10365 }
10366 }
10367 unlock_user(dirp, arg2, ret);
10368 }
10369 #endif
10370 #else
10371 /* Implement getdents in terms of getdents64 */
10372 {
10373 struct linux_dirent64 *dirp;
10374 abi_long count = arg3;
10375
10376 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
10377 if (!dirp) {
10378 return -TARGET_EFAULT;
10379 }
10380 ret = get_errno(sys_getdents64(arg1, dirp, count));
10381 if (!is_error(ret)) {
10382 /* Convert the dirent64 structs to target dirent. We do this
10383 * in-place, since we can guarantee that a target_dirent is no
10384 * larger than a dirent64; however this means we have to be
10385 * careful to read everything before writing in the new format.
10386 */
10387 struct linux_dirent64 *de;
10388 struct target_dirent *tde;
10389 int len = ret;
10390 int tlen = 0;
10391
10392 de = dirp;
10393 tde = (struct target_dirent *)dirp;
10394 while (len > 0) {
10395 int namelen, treclen;
10396 int reclen = de->d_reclen;
10397 uint64_t ino = de->d_ino;
10398 int64_t off = de->d_off;
10399 uint8_t type = de->d_type;
10400
10401 namelen = strlen(de->d_name);
10402 treclen = offsetof(struct target_dirent, d_name)
10403 + namelen + 2;
10404 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
10405
10406 memmove(tde->d_name, de->d_name, namelen + 1);
10407 tde->d_ino = tswapal(ino);
10408 tde->d_off = tswapal(off);
10409 tde->d_reclen = tswap16(treclen);
10410 /* The target_dirent type is in what was formerly a padding
10411 * byte at the end of the structure:
10412 */
10413 *(((char *)tde) + treclen - 1) = type;
10414
10415 de = (struct linux_dirent64 *)((char *)de + reclen);
10416 tde = (struct target_dirent *)((char *)tde + treclen);
10417 len -= reclen;
10418 tlen += treclen;
10419 }
10420 ret = tlen;
10421 }
10422 unlock_user(dirp, arg2, ret);
10423 }
10424 #endif
10425 return ret;
10426 #endif /* TARGET_NR_getdents */
10427 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
10428 case TARGET_NR_getdents64:
10429 {
10430 struct linux_dirent64 *dirp;
10431 abi_long count = arg3;
10432 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
10433 return -TARGET_EFAULT;
10434 ret = get_errno(sys_getdents64(arg1, dirp, count));
10435 if (!is_error(ret)) {
10436 struct linux_dirent64 *de;
10437 int len = ret;
10438 int reclen;
10439 de = dirp;
10440 while (len > 0) {
10441 reclen = de->d_reclen;
10442 if (reclen > len)
10443 break;
10444 de->d_reclen = tswap16(reclen);
10445 tswap64s((uint64_t *)&de->d_ino);
10446 tswap64s((uint64_t *)&de->d_off);
10447 de = (struct linux_dirent64 *)((char *)de + reclen);
10448 len -= reclen;
10449 }
10450 }
10451 unlock_user(dirp, arg2, ret);
10452 }
10453 return ret;
10454 #endif /* TARGET_NR_getdents64 */
10455 #if defined(TARGET_NR__newselect)
10456 case TARGET_NR__newselect:
10457 return do_select(arg1, arg2, arg3, arg4, arg5);
10458 #endif
10459 #ifdef TARGET_NR_poll
10460 case TARGET_NR_poll:
10461 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false);
10462 #endif
10463 #ifdef TARGET_NR_ppoll
10464 case TARGET_NR_ppoll:
10465 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false);
10466 #endif
10467 #ifdef TARGET_NR_ppoll_time64
10468 case TARGET_NR_ppoll_time64:
10469 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true);
10470 #endif
10471 case TARGET_NR_flock:
10472 /* NOTE: the flock constant seems to be the same for every
10473 Linux platform */
10474 return get_errno(safe_flock(arg1, arg2));
10475 case TARGET_NR_readv:
10476 {
10477 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10478 if (vec != NULL) {
10479 ret = get_errno(safe_readv(arg1, vec, arg3));
10480 unlock_iovec(vec, arg2, arg3, 1);
10481 } else {
10482 ret = -host_to_target_errno(errno);
10483 }
10484 }
10485 return ret;
10486 case TARGET_NR_writev:
10487 {
10488 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10489 if (vec != NULL) {
10490 ret = get_errno(safe_writev(arg1, vec, arg3));
10491 unlock_iovec(vec, arg2, arg3, 0);
10492 } else {
10493 ret = -host_to_target_errno(errno);
10494 }
10495 }
10496 return ret;
10497 #if defined(TARGET_NR_preadv)
10498 case TARGET_NR_preadv:
10499 {
10500 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10501 if (vec != NULL) {
10502 unsigned long low, high;
10503
10504 target_to_host_low_high(arg4, arg5, &low, &high);
10505 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
10506 unlock_iovec(vec, arg2, arg3, 1);
10507 } else {
10508 ret = -host_to_target_errno(errno);
10509 }
10510 }
10511 return ret;
10512 #endif
10513 #if defined(TARGET_NR_pwritev)
10514 case TARGET_NR_pwritev:
10515 {
10516 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10517 if (vec != NULL) {
10518 unsigned long low, high;
10519
10520 target_to_host_low_high(arg4, arg5, &low, &high);
10521 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
10522 unlock_iovec(vec, arg2, arg3, 0);
10523 } else {
10524 ret = -host_to_target_errno(errno);
10525 }
10526 }
10527 return ret;
10528 #endif
10529 case TARGET_NR_getsid:
10530 return get_errno(getsid(arg1));
10531 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10532 case TARGET_NR_fdatasync:
10533 return get_errno(fdatasync(arg1));
10534 #endif
10535 case TARGET_NR_sched_getaffinity:
10536 {
10537 unsigned int mask_size;
10538 unsigned long *mask;
10539
10540 /*
10541 * sched_getaffinity needs multiples of ulong, so need to take
10542 * care of mismatches between target ulong and host ulong sizes.
10543 */
10544 if (arg2 & (sizeof(abi_ulong) - 1)) {
10545 return -TARGET_EINVAL;
10546 }
10547 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10548
10549 mask = alloca(mask_size);
10550 memset(mask, 0, mask_size);
10551 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10552
10553 if (!is_error(ret)) {
10554 if (ret > arg2) {
10555 /* More data returned than the caller's buffer will fit.
10556 * This only happens if sizeof(abi_long) < sizeof(long)
10557 * and the caller passed us a buffer holding an odd number
10558 * of abi_longs. If the host kernel is actually using the
10559 * extra 4 bytes then fail EINVAL; otherwise we can just
10560 * ignore them and only copy the interesting part.
10561 */
10562 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
10563 if (numcpus > arg2 * 8) {
10564 return -TARGET_EINVAL;
10565 }
10566 ret = arg2;
10567 }
10568
10569 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
10570 return -TARGET_EFAULT;
10571 }
10572 }
10573 }
10574 return ret;
10575 case TARGET_NR_sched_setaffinity:
10576 {
10577 unsigned int mask_size;
10578 unsigned long *mask;
10579
10580 /*
10581 * sched_setaffinity needs multiples of ulong, so need to take
10582 * care of mismatches between target ulong and host ulong sizes.
10583 */
10584 if (arg2 & (sizeof(abi_ulong) - 1)) {
10585 return -TARGET_EINVAL;
10586 }
10587 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10588 mask = alloca(mask_size);
10589
10590 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
10591 if (ret) {
10592 return ret;
10593 }
10594
10595 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
10596 }
10597 case TARGET_NR_getcpu:
10598 {
10599 unsigned cpu, node;
10600 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
10601 arg2 ? &node : NULL,
10602 NULL));
10603 if (is_error(ret)) {
10604 return ret;
10605 }
10606 if (arg1 && put_user_u32(cpu, arg1)) {
10607 return -TARGET_EFAULT;
10608 }
10609 if (arg2 && put_user_u32(node, arg2)) {
10610 return -TARGET_EFAULT;
10611 }
10612 }
10613 return ret;
10614 case TARGET_NR_sched_setparam:
10615 {
10616 struct sched_param *target_schp;
10617 struct sched_param schp;
10618
10619 if (arg2 == 0) {
10620 return -TARGET_EINVAL;
10621 }
10622 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
10623 return -TARGET_EFAULT;
10624 schp.sched_priority = tswap32(target_schp->sched_priority);
10625 unlock_user_struct(target_schp, arg2, 0);
10626 return get_errno(sched_setparam(arg1, &schp));
10627 }
10628 case TARGET_NR_sched_getparam:
10629 {
10630 struct sched_param *target_schp;
10631 struct sched_param schp;
10632
10633 if (arg2 == 0) {
10634 return -TARGET_EINVAL;
10635 }
10636 ret = get_errno(sched_getparam(arg1, &schp));
10637 if (!is_error(ret)) {
10638 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
10639 return -TARGET_EFAULT;
10640 target_schp->sched_priority = tswap32(schp.sched_priority);
10641 unlock_user_struct(target_schp, arg2, 1);
10642 }
10643 }
10644 return ret;
10645 case TARGET_NR_sched_setscheduler:
10646 {
10647 struct sched_param *target_schp;
10648 struct sched_param schp;
10649 if (arg3 == 0) {
10650 return -TARGET_EINVAL;
10651 }
10652 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
10653 return -TARGET_EFAULT;
10654 schp.sched_priority = tswap32(target_schp->sched_priority);
10655 unlock_user_struct(target_schp, arg3, 0);
10656 return get_errno(sched_setscheduler(arg1, arg2, &schp));
10657 }
10658 case TARGET_NR_sched_getscheduler:
10659 return get_errno(sched_getscheduler(arg1));
10660 case TARGET_NR_sched_yield:
10661 return get_errno(sched_yield());
10662 case TARGET_NR_sched_get_priority_max:
10663 return get_errno(sched_get_priority_max(arg1));
10664 case TARGET_NR_sched_get_priority_min:
10665 return get_errno(sched_get_priority_min(arg1));
10666 #ifdef TARGET_NR_sched_rr_get_interval
10667 case TARGET_NR_sched_rr_get_interval:
10668 {
10669 struct timespec ts;
10670 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10671 if (!is_error(ret)) {
10672 ret = host_to_target_timespec(arg2, &ts);
10673 }
10674 }
10675 return ret;
10676 #endif
10677 #ifdef TARGET_NR_sched_rr_get_interval_time64
10678 case TARGET_NR_sched_rr_get_interval_time64:
10679 {
10680 struct timespec ts;
10681 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10682 if (!is_error(ret)) {
10683 ret = host_to_target_timespec64(arg2, &ts);
10684 }
10685 }
10686 return ret;
10687 #endif
10688 #if defined(TARGET_NR_nanosleep)
10689 case TARGET_NR_nanosleep:
10690 {
10691 struct timespec req, rem;
10692 target_to_host_timespec(&req, arg1);
10693 ret = get_errno(safe_nanosleep(&req, &rem));
10694 if (is_error(ret) && arg2) {
10695 host_to_target_timespec(arg2, &rem);
10696 }
10697 }
10698 return ret;
10699 #endif
10700 case TARGET_NR_prctl:
10701 switch (arg1) {
10702 case PR_GET_PDEATHSIG:
10703 {
10704 int deathsig;
10705 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
10706 if (!is_error(ret) && arg2
10707 && put_user_s32(deathsig, arg2)) {
10708 return -TARGET_EFAULT;
10709 }
10710 return ret;
10711 }
10712 #ifdef PR_GET_NAME
10713 case PR_GET_NAME:
10714 {
10715 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
10716 if (!name) {
10717 return -TARGET_EFAULT;
10718 }
10719 ret = get_errno(prctl(arg1, (unsigned long)name,
10720 arg3, arg4, arg5));
10721 unlock_user(name, arg2, 16);
10722 return ret;
10723 }
10724 case PR_SET_NAME:
10725 {
10726 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
10727 if (!name) {
10728 return -TARGET_EFAULT;
10729 }
10730 ret = get_errno(prctl(arg1, (unsigned long)name,
10731 arg3, arg4, arg5));
10732 unlock_user(name, arg2, 0);
10733 return ret;
10734 }
10735 #endif
10736 #ifdef TARGET_MIPS
10737 case TARGET_PR_GET_FP_MODE:
10738 {
10739 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
10740 ret = 0;
10741 if (env->CP0_Status & (1 << CP0St_FR)) {
10742 ret |= TARGET_PR_FP_MODE_FR;
10743 }
10744 if (env->CP0_Config5 & (1 << CP0C5_FRE)) {
10745 ret |= TARGET_PR_FP_MODE_FRE;
10746 }
10747 return ret;
10748 }
10749 case TARGET_PR_SET_FP_MODE:
10750 {
10751 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
10752 bool old_fr = env->CP0_Status & (1 << CP0St_FR);
10753 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE);
10754 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR;
10755 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE;
10756
10757 const unsigned int known_bits = TARGET_PR_FP_MODE_FR |
10758 TARGET_PR_FP_MODE_FRE;
10759
10760 /* If nothing to change, return right away, successfully. */
10761 if (old_fr == new_fr && old_fre == new_fre) {
10762 return 0;
10763 }
10764 /* Check the value is valid */
10765 if (arg2 & ~known_bits) {
10766 return -TARGET_EOPNOTSUPP;
10767 }
10768 /* Setting FRE without FR is not supported. */
10769 if (new_fre && !new_fr) {
10770 return -TARGET_EOPNOTSUPP;
10771 }
10772 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) {
10773 /* FR1 is not supported */
10774 return -TARGET_EOPNOTSUPP;
10775 }
10776 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64))
10777 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) {
10778 /* cannot set FR=0 */
10779 return -TARGET_EOPNOTSUPP;
10780 }
10781 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) {
10782 /* Cannot set FRE=1 */
10783 return -TARGET_EOPNOTSUPP;
10784 }
10785
10786 int i;
10787 fpr_t *fpr = env->active_fpu.fpr;
10788 for (i = 0; i < 32 ; i += 2) {
10789 if (!old_fr && new_fr) {
10790 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX];
10791 } else if (old_fr && !new_fr) {
10792 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX];
10793 }
10794 }
10795
10796 if (new_fr) {
10797 env->CP0_Status |= (1 << CP0St_FR);
10798 env->hflags |= MIPS_HFLAG_F64;
10799 } else {
10800 env->CP0_Status &= ~(1 << CP0St_FR);
10801 env->hflags &= ~MIPS_HFLAG_F64;
10802 }
10803 if (new_fre) {
10804 env->CP0_Config5 |= (1 << CP0C5_FRE);
10805 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) {
10806 env->hflags |= MIPS_HFLAG_FRE;
10807 }
10808 } else {
10809 env->CP0_Config5 &= ~(1 << CP0C5_FRE);
10810 env->hflags &= ~MIPS_HFLAG_FRE;
10811 }
10812
10813 return 0;
10814 }
10815 #endif /* MIPS */
10816 #ifdef TARGET_AARCH64
10817 case TARGET_PR_SVE_SET_VL:
10818 /*
10819 * We cannot support either PR_SVE_SET_VL_ONEXEC or
10820 * PR_SVE_VL_INHERIT. Note the kernel definition
10821 * of sve_vl_valid allows for VQ=512, i.e. VL=8192,
10822 * even though the current architectural maximum is VQ=16.
10823 */
10824 ret = -TARGET_EINVAL;
10825 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env))
10826 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
10827 CPUARMState *env = cpu_env;
10828 ARMCPU *cpu = env_archcpu(env);
10829 uint32_t vq, old_vq;
10830
10831 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1;
10832 vq = MAX(arg2 / 16, 1);
10833 vq = MIN(vq, cpu->sve_max_vq);
10834
10835 if (vq < old_vq) {
10836 aarch64_sve_narrow_vq(env, vq);
10837 }
10838 env->vfp.zcr_el[1] = vq - 1;
10839 arm_rebuild_hflags(env);
10840 ret = vq * 16;
10841 }
10842 return ret;
10843 case TARGET_PR_SVE_GET_VL:
10844 ret = -TARGET_EINVAL;
10845 {
10846 ARMCPU *cpu = env_archcpu(cpu_env);
10847 if (cpu_isar_feature(aa64_sve, cpu)) {
10848 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16;
10849 }
10850 }
10851 return ret;
10852 case TARGET_PR_PAC_RESET_KEYS:
10853 {
10854 CPUARMState *env = cpu_env;
10855 ARMCPU *cpu = env_archcpu(env);
10856
10857 if (arg3 || arg4 || arg5) {
10858 return -TARGET_EINVAL;
10859 }
10860 if (cpu_isar_feature(aa64_pauth, cpu)) {
10861 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY |
10862 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY |
10863 TARGET_PR_PAC_APGAKEY);
10864 int ret = 0;
10865 Error *err = NULL;
10866
10867 if (arg2 == 0) {
10868 arg2 = all;
10869 } else if (arg2 & ~all) {
10870 return -TARGET_EINVAL;
10871 }
10872 if (arg2 & TARGET_PR_PAC_APIAKEY) {
10873 ret |= qemu_guest_getrandom(&env->keys.apia,
10874 sizeof(ARMPACKey), &err);
10875 }
10876 if (arg2 & TARGET_PR_PAC_APIBKEY) {
10877 ret |= qemu_guest_getrandom(&env->keys.apib,
10878 sizeof(ARMPACKey), &err);
10879 }
10880 if (arg2 & TARGET_PR_PAC_APDAKEY) {
10881 ret |= qemu_guest_getrandom(&env->keys.apda,
10882 sizeof(ARMPACKey), &err);
10883 }
10884 if (arg2 & TARGET_PR_PAC_APDBKEY) {
10885 ret |= qemu_guest_getrandom(&env->keys.apdb,
10886 sizeof(ARMPACKey), &err);
10887 }
10888 if (arg2 & TARGET_PR_PAC_APGAKEY) {
10889 ret |= qemu_guest_getrandom(&env->keys.apga,
10890 sizeof(ARMPACKey), &err);
10891 }
10892 if (ret != 0) {
10893 /*
10894 * Some unknown failure in the crypto. The best
10895 * we can do is log it and fail the syscall.
10896 * The real syscall cannot fail this way.
10897 */
10898 qemu_log_mask(LOG_UNIMP,
10899 "PR_PAC_RESET_KEYS: Crypto failure: %s",
10900 error_get_pretty(err));
10901 error_free(err);
10902 return -TARGET_EIO;
10903 }
10904 return 0;
10905 }
10906 }
10907 return -TARGET_EINVAL;
10908 #endif /* AARCH64 */
10909 case PR_GET_SECCOMP:
10910 case PR_SET_SECCOMP:
10911 /* Disable seccomp to prevent the target disabling syscalls we
10912 * need. */
10913 return -TARGET_EINVAL;
10914 default:
10915 /* Most prctl options have no pointer arguments */
10916 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
10917 }
10918 break;
10919 #ifdef TARGET_NR_arch_prctl
10920 case TARGET_NR_arch_prctl:
10921 return do_arch_prctl(cpu_env, arg1, arg2);
10922 #endif
10923 #ifdef TARGET_NR_pread64
10924 case TARGET_NR_pread64:
10925 if (regpairs_aligned(cpu_env, num)) {
10926 arg4 = arg5;
10927 arg5 = arg6;
10928 }
10929 if (arg2 == 0 && arg3 == 0) {
10930 /* Special-case NULL buffer and zero length, which should succeed */
10931 p = 0;
10932 } else {
10933 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10934 if (!p) {
10935 return -TARGET_EFAULT;
10936 }
10937 }
10938 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10939 unlock_user(p, arg2, ret);
10940 return ret;
10941 case TARGET_NR_pwrite64:
10942 if (regpairs_aligned(cpu_env, num)) {
10943 arg4 = arg5;
10944 arg5 = arg6;
10945 }
10946 if (arg2 == 0 && arg3 == 0) {
10947 /* Special-case NULL buffer and zero length, which should succeed */
10948 p = 0;
10949 } else {
10950 p = lock_user(VERIFY_READ, arg2, arg3, 1);
10951 if (!p) {
10952 return -TARGET_EFAULT;
10953 }
10954 }
10955 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10956 unlock_user(p, arg2, 0);
10957 return ret;
10958 #endif
10959 case TARGET_NR_getcwd:
10960 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10961 return -TARGET_EFAULT;
10962 ret = get_errno(sys_getcwd1(p, arg2));
10963 unlock_user(p, arg1, ret);
10964 return ret;
10965 case TARGET_NR_capget:
10966 case TARGET_NR_capset:
10967 {
10968 struct target_user_cap_header *target_header;
10969 struct target_user_cap_data *target_data = NULL;
10970 struct __user_cap_header_struct header;
10971 struct __user_cap_data_struct data[2];
10972 struct __user_cap_data_struct *dataptr = NULL;
10973 int i, target_datalen;
10974 int data_items = 1;
10975
10976 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10977 return -TARGET_EFAULT;
10978 }
10979 header.version = tswap32(target_header->version);
10980 header.pid = tswap32(target_header->pid);
10981
10982 if (header.version != _LINUX_CAPABILITY_VERSION) {
10983 /* Version 2 and up takes pointer to two user_data structs */
10984 data_items = 2;
10985 }
10986
10987 target_datalen = sizeof(*target_data) * data_items;
10988
10989 if (arg2) {
10990 if (num == TARGET_NR_capget) {
10991 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10992 } else {
10993 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10994 }
10995 if (!target_data) {
10996 unlock_user_struct(target_header, arg1, 0);
10997 return -TARGET_EFAULT;
10998 }
10999
11000 if (num == TARGET_NR_capset) {
11001 for (i = 0; i < data_items; i++) {
11002 data[i].effective = tswap32(target_data[i].effective);
11003 data[i].permitted = tswap32(target_data[i].permitted);
11004 data[i].inheritable = tswap32(target_data[i].inheritable);
11005 }
11006 }
11007
11008 dataptr = data;
11009 }
11010
11011 if (num == TARGET_NR_capget) {
11012 ret = get_errno(capget(&header, dataptr));
11013 } else {
11014 ret = get_errno(capset(&header, dataptr));
11015 }
11016
11017 /* The kernel always updates version for both capget and capset */
11018 target_header->version = tswap32(header.version);
11019 unlock_user_struct(target_header, arg1, 1);
11020
11021 if (arg2) {
11022 if (num == TARGET_NR_capget) {
11023 for (i = 0; i < data_items; i++) {
11024 target_data[i].effective = tswap32(data[i].effective);
11025 target_data[i].permitted = tswap32(data[i].permitted);
11026 target_data[i].inheritable = tswap32(data[i].inheritable);
11027 }
11028 unlock_user(target_data, arg2, target_datalen);
11029 } else {
11030 unlock_user(target_data, arg2, 0);
11031 }
11032 }
11033 return ret;
11034 }
11035 case TARGET_NR_sigaltstack:
11036 return do_sigaltstack(arg1, arg2,
11037 get_sp_from_cpustate((CPUArchState *)cpu_env));
11038
11039 #ifdef CONFIG_SENDFILE
11040 #ifdef TARGET_NR_sendfile
11041 case TARGET_NR_sendfile:
11042 {
11043 off_t *offp = NULL;
11044 off_t off;
11045 if (arg3) {
11046 ret = get_user_sal(off, arg3);
11047 if (is_error(ret)) {
11048 return ret;
11049 }
11050 offp = &off;
11051 }
11052 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11053 if (!is_error(ret) && arg3) {
11054 abi_long ret2 = put_user_sal(off, arg3);
11055 if (is_error(ret2)) {
11056 ret = ret2;
11057 }
11058 }
11059 return ret;
11060 }
11061 #endif
11062 #ifdef TARGET_NR_sendfile64
11063 case TARGET_NR_sendfile64:
11064 {
11065 off_t *offp = NULL;
11066 off_t off;
11067 if (arg3) {
11068 ret = get_user_s64(off, arg3);
11069 if (is_error(ret)) {
11070 return ret;
11071 }
11072 offp = &off;
11073 }
11074 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
11075 if (!is_error(ret) && arg3) {
11076 abi_long ret2 = put_user_s64(off, arg3);
11077 if (is_error(ret2)) {
11078 ret = ret2;
11079 }
11080 }
11081 return ret;
11082 }
11083 #endif
11084 #endif
11085 #ifdef TARGET_NR_vfork
11086 case TARGET_NR_vfork:
11087 return get_errno(do_fork(cpu_env,
11088 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
11089 0, 0, 0, 0));
11090 #endif
11091 #ifdef TARGET_NR_ugetrlimit
11092 case TARGET_NR_ugetrlimit:
11093 {
11094 struct rlimit rlim;
11095 int resource = target_to_host_resource(arg1);
11096 ret = get_errno(getrlimit(resource, &rlim));
11097 if (!is_error(ret)) {
11098 struct target_rlimit *target_rlim;
11099 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
11100 return -TARGET_EFAULT;
11101 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
11102 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
11103 unlock_user_struct(target_rlim, arg2, 1);
11104 }
11105 return ret;
11106 }
11107 #endif
11108 #ifdef TARGET_NR_truncate64
11109 case TARGET_NR_truncate64:
11110 if (!(p = lock_user_string(arg1)))
11111 return -TARGET_EFAULT;
11112 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
11113 unlock_user(p, arg1, 0);
11114 return ret;
11115 #endif
11116 #ifdef TARGET_NR_ftruncate64
11117 case TARGET_NR_ftruncate64:
11118 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
11119 #endif
11120 #ifdef TARGET_NR_stat64
11121 case TARGET_NR_stat64:
11122 if (!(p = lock_user_string(arg1))) {
11123 return -TARGET_EFAULT;
11124 }
11125 ret = get_errno(stat(path(p), &st));
11126 unlock_user(p, arg1, 0);
11127 if (!is_error(ret))
11128 ret = host_to_target_stat64(cpu_env, arg2, &st);
11129 return ret;
11130 #endif
11131 #ifdef TARGET_NR_lstat64
11132 case TARGET_NR_lstat64:
11133 if (!(p = lock_user_string(arg1))) {
11134 return -TARGET_EFAULT;
11135 }
11136 ret = get_errno(lstat(path(p), &st));
11137 unlock_user(p, arg1, 0);
11138 if (!is_error(ret))
11139 ret = host_to_target_stat64(cpu_env, arg2, &st);
11140 return ret;
11141 #endif
11142 #ifdef TARGET_NR_fstat64
11143 case TARGET_NR_fstat64:
11144 ret = get_errno(fstat(arg1, &st));
11145 if (!is_error(ret))
11146 ret = host_to_target_stat64(cpu_env, arg2, &st);
11147 return ret;
11148 #endif
11149 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
11150 #ifdef TARGET_NR_fstatat64
11151 case TARGET_NR_fstatat64:
11152 #endif
11153 #ifdef TARGET_NR_newfstatat
11154 case TARGET_NR_newfstatat:
11155 #endif
11156 if (!(p = lock_user_string(arg2))) {
11157 return -TARGET_EFAULT;
11158 }
11159 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
11160 unlock_user(p, arg2, 0);
11161 if (!is_error(ret))
11162 ret = host_to_target_stat64(cpu_env, arg3, &st);
11163 return ret;
11164 #endif
11165 #if defined(TARGET_NR_statx)
11166 case TARGET_NR_statx:
11167 {
11168 struct target_statx *target_stx;
11169 int dirfd = arg1;
11170 int flags = arg3;
11171
11172 p = lock_user_string(arg2);
11173 if (p == NULL) {
11174 return -TARGET_EFAULT;
11175 }
11176 #if defined(__NR_statx)
11177 {
11178 /*
11179 * It is assumed that struct statx is architecture independent.
11180 */
11181 struct target_statx host_stx;
11182 int mask = arg4;
11183
11184 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
11185 if (!is_error(ret)) {
11186 if (host_to_target_statx(&host_stx, arg5) != 0) {
11187 unlock_user(p, arg2, 0);
11188 return -TARGET_EFAULT;
11189 }
11190 }
11191
11192 if (ret != -TARGET_ENOSYS) {
11193 unlock_user(p, arg2, 0);
11194 return ret;
11195 }
11196 }
11197 #endif
11198 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
11199 unlock_user(p, arg2, 0);
11200
11201 if (!is_error(ret)) {
11202 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
11203 return -TARGET_EFAULT;
11204 }
11205 memset(target_stx, 0, sizeof(*target_stx));
11206 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
11207 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
11208 __put_user(st.st_ino, &target_stx->stx_ino);
11209 __put_user(st.st_mode, &target_stx->stx_mode);
11210 __put_user(st.st_uid, &target_stx->stx_uid);
11211 __put_user(st.st_gid, &target_stx->stx_gid);
11212 __put_user(st.st_nlink, &target_stx->stx_nlink);
11213 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
11214 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
11215 __put_user(st.st_size, &target_stx->stx_size);
11216 __put_user(st.st_blksize, &target_stx->stx_blksize);
11217 __put_user(st.st_blocks, &target_stx->stx_blocks);
11218 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
11219 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
11220 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
11221 unlock_user_struct(target_stx, arg5, 1);
11222 }
11223 }
11224 return ret;
11225 #endif
11226 #ifdef TARGET_NR_lchown
11227 case TARGET_NR_lchown:
11228 if (!(p = lock_user_string(arg1)))
11229 return -TARGET_EFAULT;
11230 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
11231 unlock_user(p, arg1, 0);
11232 return ret;
11233 #endif
11234 #ifdef TARGET_NR_getuid
11235 case TARGET_NR_getuid:
11236 return get_errno(high2lowuid(getuid()));
11237 #endif
11238 #ifdef TARGET_NR_getgid
11239 case TARGET_NR_getgid:
11240 return get_errno(high2lowgid(getgid()));
11241 #endif
11242 #ifdef TARGET_NR_geteuid
11243 case TARGET_NR_geteuid:
11244 return get_errno(high2lowuid(geteuid()));
11245 #endif
11246 #ifdef TARGET_NR_getegid
11247 case TARGET_NR_getegid:
11248 return get_errno(high2lowgid(getegid()));
11249 #endif
11250 case TARGET_NR_setreuid:
11251 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
11252 case TARGET_NR_setregid:
11253 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
11254 case TARGET_NR_getgroups:
11255 {
11256 int gidsetsize = arg1;
11257 target_id *target_grouplist;
11258 gid_t *grouplist;
11259 int i;
11260
11261 grouplist = alloca(gidsetsize * sizeof(gid_t));
11262 ret = get_errno(getgroups(gidsetsize, grouplist));
11263 if (gidsetsize == 0)
11264 return ret;
11265 if (!is_error(ret)) {
11266 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
11267 if (!target_grouplist)
11268 return -TARGET_EFAULT;
11269 for(i = 0;i < ret; i++)
11270 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
11271 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
11272 }
11273 }
11274 return ret;
11275 case TARGET_NR_setgroups:
11276 {
11277 int gidsetsize = arg1;
11278 target_id *target_grouplist;
11279 gid_t *grouplist = NULL;
11280 int i;
11281 if (gidsetsize) {
11282 grouplist = alloca(gidsetsize * sizeof(gid_t));
11283 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
11284 if (!target_grouplist) {
11285 return -TARGET_EFAULT;
11286 }
11287 for (i = 0; i < gidsetsize; i++) {
11288 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
11289 }
11290 unlock_user(target_grouplist, arg2, 0);
11291 }
11292 return get_errno(setgroups(gidsetsize, grouplist));
11293 }
11294 case TARGET_NR_fchown:
11295 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
11296 #if defined(TARGET_NR_fchownat)
11297 case TARGET_NR_fchownat:
11298 if (!(p = lock_user_string(arg2)))
11299 return -TARGET_EFAULT;
11300 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
11301 low2highgid(arg4), arg5));
11302 unlock_user(p, arg2, 0);
11303 return ret;
11304 #endif
11305 #ifdef TARGET_NR_setresuid
11306 case TARGET_NR_setresuid:
11307 return get_errno(sys_setresuid(low2highuid(arg1),
11308 low2highuid(arg2),
11309 low2highuid(arg3)));
11310 #endif
11311 #ifdef TARGET_NR_getresuid
11312 case TARGET_NR_getresuid:
11313 {
11314 uid_t ruid, euid, suid;
11315 ret = get_errno(getresuid(&ruid, &euid, &suid));
11316 if (!is_error(ret)) {
11317 if (put_user_id(high2lowuid(ruid), arg1)
11318 || put_user_id(high2lowuid(euid), arg2)
11319 || put_user_id(high2lowuid(suid), arg3))
11320 return -TARGET_EFAULT;
11321 }
11322 }
11323 return ret;
11324 #endif
11325 #ifdef TARGET_NR_getresgid
11326 case TARGET_NR_setresgid:
11327 return get_errno(sys_setresgid(low2highgid(arg1),
11328 low2highgid(arg2),
11329 low2highgid(arg3)));
11330 #endif
11331 #ifdef TARGET_NR_getresgid
11332 case TARGET_NR_getresgid:
11333 {
11334 gid_t rgid, egid, sgid;
11335 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11336 if (!is_error(ret)) {
11337 if (put_user_id(high2lowgid(rgid), arg1)
11338 || put_user_id(high2lowgid(egid), arg2)
11339 || put_user_id(high2lowgid(sgid), arg3))
11340 return -TARGET_EFAULT;
11341 }
11342 }
11343 return ret;
11344 #endif
11345 #ifdef TARGET_NR_chown
11346 case TARGET_NR_chown:
11347 if (!(p = lock_user_string(arg1)))
11348 return -TARGET_EFAULT;
11349 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
11350 unlock_user(p, arg1, 0);
11351 return ret;
11352 #endif
11353 case TARGET_NR_setuid:
11354 return get_errno(sys_setuid(low2highuid(arg1)));
11355 case TARGET_NR_setgid:
11356 return get_errno(sys_setgid(low2highgid(arg1)));
11357 case TARGET_NR_setfsuid:
11358 return get_errno(setfsuid(arg1));
11359 case TARGET_NR_setfsgid:
11360 return get_errno(setfsgid(arg1));
11361
11362 #ifdef TARGET_NR_lchown32
11363 case TARGET_NR_lchown32:
11364 if (!(p = lock_user_string(arg1)))
11365 return -TARGET_EFAULT;
11366 ret = get_errno(lchown(p, arg2, arg3));
11367 unlock_user(p, arg1, 0);
11368 return ret;
11369 #endif
11370 #ifdef TARGET_NR_getuid32
11371 case TARGET_NR_getuid32:
11372 return get_errno(getuid());
11373 #endif
11374
11375 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
11376 /* Alpha specific */
11377 case TARGET_NR_getxuid:
11378 {
11379 uid_t euid;
11380 euid=geteuid();
11381 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
11382 }
11383 return get_errno(getuid());
11384 #endif
11385 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
11386 /* Alpha specific */
11387 case TARGET_NR_getxgid:
11388 {
11389 uid_t egid;
11390 egid=getegid();
11391 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
11392 }
11393 return get_errno(getgid());
11394 #endif
11395 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
11396 /* Alpha specific */
11397 case TARGET_NR_osf_getsysinfo:
11398 ret = -TARGET_EOPNOTSUPP;
11399 switch (arg1) {
11400 case TARGET_GSI_IEEE_FP_CONTROL:
11401 {
11402 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
11403 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr;
11404
11405 swcr &= ~SWCR_STATUS_MASK;
11406 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
11407
11408 if (put_user_u64 (swcr, arg2))
11409 return -TARGET_EFAULT;
11410 ret = 0;
11411 }
11412 break;
11413
11414 /* case GSI_IEEE_STATE_AT_SIGNAL:
11415 -- Not implemented in linux kernel.
11416 case GSI_UACPROC:
11417 -- Retrieves current unaligned access state; not much used.
11418 case GSI_PROC_TYPE:
11419 -- Retrieves implver information; surely not used.
11420 case GSI_GET_HWRPB:
11421 -- Grabs a copy of the HWRPB; surely not used.
11422 */
11423 }
11424 return ret;
11425 #endif
11426 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
11427 /* Alpha specific */
11428 case TARGET_NR_osf_setsysinfo:
11429 ret = -TARGET_EOPNOTSUPP;
11430 switch (arg1) {
11431 case TARGET_SSI_IEEE_FP_CONTROL:
11432 {
11433 uint64_t swcr, fpcr;
11434
11435 if (get_user_u64 (swcr, arg2)) {
11436 return -TARGET_EFAULT;
11437 }
11438
11439 /*
11440 * The kernel calls swcr_update_status to update the
11441 * status bits from the fpcr at every point that it
11442 * could be queried. Therefore, we store the status
11443 * bits only in FPCR.
11444 */
11445 ((CPUAlphaState *)cpu_env)->swcr
11446 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
11447
11448 fpcr = cpu_alpha_load_fpcr(cpu_env);
11449 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
11450 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
11451 cpu_alpha_store_fpcr(cpu_env, fpcr);
11452 ret = 0;
11453 }
11454 break;
11455
11456 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
11457 {
11458 uint64_t exc, fpcr, fex;
11459
11460 if (get_user_u64(exc, arg2)) {
11461 return -TARGET_EFAULT;
11462 }
11463 exc &= SWCR_STATUS_MASK;
11464 fpcr = cpu_alpha_load_fpcr(cpu_env);
11465
11466 /* Old exceptions are not signaled. */
11467 fex = alpha_ieee_fpcr_to_swcr(fpcr);
11468 fex = exc & ~fex;
11469 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
11470 fex &= ((CPUArchState *)cpu_env)->swcr;
11471
11472 /* Update the hardware fpcr. */
11473 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
11474 cpu_alpha_store_fpcr(cpu_env, fpcr);
11475
11476 if (fex) {
11477 int si_code = TARGET_FPE_FLTUNK;
11478 target_siginfo_t info;
11479
11480 if (fex & SWCR_TRAP_ENABLE_DNO) {
11481 si_code = TARGET_FPE_FLTUND;
11482 }
11483 if (fex & SWCR_TRAP_ENABLE_INE) {
11484 si_code = TARGET_FPE_FLTRES;
11485 }
11486 if (fex & SWCR_TRAP_ENABLE_UNF) {
11487 si_code = TARGET_FPE_FLTUND;
11488 }
11489 if (fex & SWCR_TRAP_ENABLE_OVF) {
11490 si_code = TARGET_FPE_FLTOVF;
11491 }
11492 if (fex & SWCR_TRAP_ENABLE_DZE) {
11493 si_code = TARGET_FPE_FLTDIV;
11494 }
11495 if (fex & SWCR_TRAP_ENABLE_INV) {
11496 si_code = TARGET_FPE_FLTINV;
11497 }
11498
11499 info.si_signo = SIGFPE;
11500 info.si_errno = 0;
11501 info.si_code = si_code;
11502 info._sifields._sigfault._addr
11503 = ((CPUArchState *)cpu_env)->pc;
11504 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11505 QEMU_SI_FAULT, &info);
11506 }
11507 ret = 0;
11508 }
11509 break;
11510
11511 /* case SSI_NVPAIRS:
11512 -- Used with SSIN_UACPROC to enable unaligned accesses.
11513 case SSI_IEEE_STATE_AT_SIGNAL:
11514 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
11515 -- Not implemented in linux kernel
11516 */
11517 }
11518 return ret;
11519 #endif
11520 #ifdef TARGET_NR_osf_sigprocmask
11521 /* Alpha specific. */
11522 case TARGET_NR_osf_sigprocmask:
11523 {
11524 abi_ulong mask;
11525 int how;
11526 sigset_t set, oldset;
11527
11528 switch(arg1) {
11529 case TARGET_SIG_BLOCK:
11530 how = SIG_BLOCK;
11531 break;
11532 case TARGET_SIG_UNBLOCK:
11533 how = SIG_UNBLOCK;
11534 break;
11535 case TARGET_SIG_SETMASK:
11536 how = SIG_SETMASK;
11537 break;
11538 default:
11539 return -TARGET_EINVAL;
11540 }
11541 mask = arg2;
11542 target_to_host_old_sigset(&set, &mask);
11543 ret = do_sigprocmask(how, &set, &oldset);
11544 if (!ret) {
11545 host_to_target_old_sigset(&mask, &oldset);
11546 ret = mask;
11547 }
11548 }
11549 return ret;
11550 #endif
11551
11552 #ifdef TARGET_NR_getgid32
11553 case TARGET_NR_getgid32:
11554 return get_errno(getgid());
11555 #endif
11556 #ifdef TARGET_NR_geteuid32
11557 case TARGET_NR_geteuid32:
11558 return get_errno(geteuid());
11559 #endif
11560 #ifdef TARGET_NR_getegid32
11561 case TARGET_NR_getegid32:
11562 return get_errno(getegid());
11563 #endif
11564 #ifdef TARGET_NR_setreuid32
11565 case TARGET_NR_setreuid32:
11566 return get_errno(setreuid(arg1, arg2));
11567 #endif
11568 #ifdef TARGET_NR_setregid32
11569 case TARGET_NR_setregid32:
11570 return get_errno(setregid(arg1, arg2));
11571 #endif
11572 #ifdef TARGET_NR_getgroups32
11573 case TARGET_NR_getgroups32:
11574 {
11575 int gidsetsize = arg1;
11576 uint32_t *target_grouplist;
11577 gid_t *grouplist;
11578 int i;
11579
11580 grouplist = alloca(gidsetsize * sizeof(gid_t));
11581 ret = get_errno(getgroups(gidsetsize, grouplist));
11582 if (gidsetsize == 0)
11583 return ret;
11584 if (!is_error(ret)) {
11585 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
11586 if (!target_grouplist) {
11587 return -TARGET_EFAULT;
11588 }
11589 for(i = 0;i < ret; i++)
11590 target_grouplist[i] = tswap32(grouplist[i]);
11591 unlock_user(target_grouplist, arg2, gidsetsize * 4);
11592 }
11593 }
11594 return ret;
11595 #endif
11596 #ifdef TARGET_NR_setgroups32
11597 case TARGET_NR_setgroups32:
11598 {
11599 int gidsetsize = arg1;
11600 uint32_t *target_grouplist;
11601 gid_t *grouplist;
11602 int i;
11603
11604 grouplist = alloca(gidsetsize * sizeof(gid_t));
11605 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
11606 if (!target_grouplist) {
11607 return -TARGET_EFAULT;
11608 }
11609 for(i = 0;i < gidsetsize; i++)
11610 grouplist[i] = tswap32(target_grouplist[i]);
11611 unlock_user(target_grouplist, arg2, 0);
11612 return get_errno(setgroups(gidsetsize, grouplist));
11613 }
11614 #endif
11615 #ifdef TARGET_NR_fchown32
11616 case TARGET_NR_fchown32:
11617 return get_errno(fchown(arg1, arg2, arg3));
11618 #endif
11619 #ifdef TARGET_NR_setresuid32
11620 case TARGET_NR_setresuid32:
11621 return get_errno(sys_setresuid(arg1, arg2, arg3));
11622 #endif
11623 #ifdef TARGET_NR_getresuid32
11624 case TARGET_NR_getresuid32:
11625 {
11626 uid_t ruid, euid, suid;
11627 ret = get_errno(getresuid(&ruid, &euid, &suid));
11628 if (!is_error(ret)) {
11629 if (put_user_u32(ruid, arg1)
11630 || put_user_u32(euid, arg2)
11631 || put_user_u32(suid, arg3))
11632 return -TARGET_EFAULT;
11633 }
11634 }
11635 return ret;
11636 #endif
11637 #ifdef TARGET_NR_setresgid32
11638 case TARGET_NR_setresgid32:
11639 return get_errno(sys_setresgid(arg1, arg2, arg3));
11640 #endif
11641 #ifdef TARGET_NR_getresgid32
11642 case TARGET_NR_getresgid32:
11643 {
11644 gid_t rgid, egid, sgid;
11645 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11646 if (!is_error(ret)) {
11647 if (put_user_u32(rgid, arg1)
11648 || put_user_u32(egid, arg2)
11649 || put_user_u32(sgid, arg3))
11650 return -TARGET_EFAULT;
11651 }
11652 }
11653 return ret;
11654 #endif
11655 #ifdef TARGET_NR_chown32
11656 case TARGET_NR_chown32:
11657 if (!(p = lock_user_string(arg1)))
11658 return -TARGET_EFAULT;
11659 ret = get_errno(chown(p, arg2, arg3));
11660 unlock_user(p, arg1, 0);
11661 return ret;
11662 #endif
11663 #ifdef TARGET_NR_setuid32
11664 case TARGET_NR_setuid32:
11665 return get_errno(sys_setuid(arg1));
11666 #endif
11667 #ifdef TARGET_NR_setgid32
11668 case TARGET_NR_setgid32:
11669 return get_errno(sys_setgid(arg1));
11670 #endif
11671 #ifdef TARGET_NR_setfsuid32
11672 case TARGET_NR_setfsuid32:
11673 return get_errno(setfsuid(arg1));
11674 #endif
11675 #ifdef TARGET_NR_setfsgid32
11676 case TARGET_NR_setfsgid32:
11677 return get_errno(setfsgid(arg1));
11678 #endif
11679 #ifdef TARGET_NR_mincore
11680 case TARGET_NR_mincore:
11681 {
11682 void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
11683 if (!a) {
11684 return -TARGET_ENOMEM;
11685 }
11686 p = lock_user_string(arg3);
11687 if (!p) {
11688 ret = -TARGET_EFAULT;
11689 } else {
11690 ret = get_errno(mincore(a, arg2, p));
11691 unlock_user(p, arg3, ret);
11692 }
11693 unlock_user(a, arg1, 0);
11694 }
11695 return ret;
11696 #endif
11697 #ifdef TARGET_NR_arm_fadvise64_64
11698 case TARGET_NR_arm_fadvise64_64:
11699 /* arm_fadvise64_64 looks like fadvise64_64 but
11700 * with different argument order: fd, advice, offset, len
11701 * rather than the usual fd, offset, len, advice.
11702 * Note that offset and len are both 64-bit so appear as
11703 * pairs of 32-bit registers.
11704 */
11705 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
11706 target_offset64(arg5, arg6), arg2);
11707 return -host_to_target_errno(ret);
11708 #endif
11709
11710 #if TARGET_ABI_BITS == 32
11711
11712 #ifdef TARGET_NR_fadvise64_64
11713 case TARGET_NR_fadvise64_64:
11714 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
11715 /* 6 args: fd, advice, offset (high, low), len (high, low) */
11716 ret = arg2;
11717 arg2 = arg3;
11718 arg3 = arg4;
11719 arg4 = arg5;
11720 arg5 = arg6;
11721 arg6 = ret;
11722 #else
11723 /* 6 args: fd, offset (high, low), len (high, low), advice */
11724 if (regpairs_aligned(cpu_env, num)) {
11725 /* offset is in (3,4), len in (5,6) and advice in 7 */
11726 arg2 = arg3;
11727 arg3 = arg4;
11728 arg4 = arg5;
11729 arg5 = arg6;
11730 arg6 = arg7;
11731 }
11732 #endif
11733 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
11734 target_offset64(arg4, arg5), arg6);
11735 return -host_to_target_errno(ret);
11736 #endif
11737
11738 #ifdef TARGET_NR_fadvise64
11739 case TARGET_NR_fadvise64:
11740 /* 5 args: fd, offset (high, low), len, advice */
11741 if (regpairs_aligned(cpu_env, num)) {
11742 /* offset is in (3,4), len in 5 and advice in 6 */
11743 arg2 = arg3;
11744 arg3 = arg4;
11745 arg4 = arg5;
11746 arg5 = arg6;
11747 }
11748 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
11749 return -host_to_target_errno(ret);
11750 #endif
11751
11752 #else /* not a 32-bit ABI */
11753 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
11754 #ifdef TARGET_NR_fadvise64_64
11755 case TARGET_NR_fadvise64_64:
11756 #endif
11757 #ifdef TARGET_NR_fadvise64
11758 case TARGET_NR_fadvise64:
11759 #endif
11760 #ifdef TARGET_S390X
11761 switch (arg4) {
11762 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
11763 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
11764 case 6: arg4 = POSIX_FADV_DONTNEED; break;
11765 case 7: arg4 = POSIX_FADV_NOREUSE; break;
11766 default: break;
11767 }
11768 #endif
11769 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
11770 #endif
11771 #endif /* end of 64-bit ABI fadvise handling */
11772
11773 #ifdef TARGET_NR_madvise
11774 case TARGET_NR_madvise:
11775 /* A straight passthrough may not be safe because qemu sometimes
11776 turns private file-backed mappings into anonymous mappings.
11777 This will break MADV_DONTNEED.
11778 This is a hint, so ignoring and returning success is ok. */
11779 return 0;
11780 #endif
11781 #ifdef TARGET_NR_fcntl64
11782 case TARGET_NR_fcntl64:
11783 {
11784 int cmd;
11785 struct flock64 fl;
11786 from_flock64_fn *copyfrom = copy_from_user_flock64;
11787 to_flock64_fn *copyto = copy_to_user_flock64;
11788
11789 #ifdef TARGET_ARM
11790 if (!((CPUARMState *)cpu_env)->eabi) {
11791 copyfrom = copy_from_user_oabi_flock64;
11792 copyto = copy_to_user_oabi_flock64;
11793 }
11794 #endif
11795
11796 cmd = target_to_host_fcntl_cmd(arg2);
11797 if (cmd == -TARGET_EINVAL) {
11798 return cmd;
11799 }
11800
11801 switch(arg2) {
11802 case TARGET_F_GETLK64:
11803 ret = copyfrom(&fl, arg3);
11804 if (ret) {
11805 break;
11806 }
11807 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11808 if (ret == 0) {
11809 ret = copyto(arg3, &fl);
11810 }
11811 break;
11812
11813 case TARGET_F_SETLK64:
11814 case TARGET_F_SETLKW64:
11815 ret = copyfrom(&fl, arg3);
11816 if (ret) {
11817 break;
11818 }
11819 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11820 break;
11821 default:
11822 ret = do_fcntl(arg1, arg2, arg3);
11823 break;
11824 }
11825 return ret;
11826 }
11827 #endif
11828 #ifdef TARGET_NR_cacheflush
11829 case TARGET_NR_cacheflush:
11830 /* self-modifying code is handled automatically, so nothing needed */
11831 return 0;
11832 #endif
11833 #ifdef TARGET_NR_getpagesize
11834 case TARGET_NR_getpagesize:
11835 return TARGET_PAGE_SIZE;
11836 #endif
11837 case TARGET_NR_gettid:
11838 return get_errno(sys_gettid());
11839 #ifdef TARGET_NR_readahead
11840 case TARGET_NR_readahead:
11841 #if TARGET_ABI_BITS == 32
11842 if (regpairs_aligned(cpu_env, num)) {
11843 arg2 = arg3;
11844 arg3 = arg4;
11845 arg4 = arg5;
11846 }
11847 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
11848 #else
11849 ret = get_errno(readahead(arg1, arg2, arg3));
11850 #endif
11851 return ret;
11852 #endif
11853 #ifdef CONFIG_ATTR
11854 #ifdef TARGET_NR_setxattr
11855 case TARGET_NR_listxattr:
11856 case TARGET_NR_llistxattr:
11857 {
11858 void *p, *b = 0;
11859 if (arg2) {
11860 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11861 if (!b) {
11862 return -TARGET_EFAULT;
11863 }
11864 }
11865 p = lock_user_string(arg1);
11866 if (p) {
11867 if (num == TARGET_NR_listxattr) {
11868 ret = get_errno(listxattr(p, b, arg3));
11869 } else {
11870 ret = get_errno(llistxattr(p, b, arg3));
11871 }
11872 } else {
11873 ret = -TARGET_EFAULT;
11874 }
11875 unlock_user(p, arg1, 0);
11876 unlock_user(b, arg2, arg3);
11877 return ret;
11878 }
11879 case TARGET_NR_flistxattr:
11880 {
11881 void *b = 0;
11882 if (arg2) {
11883 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11884 if (!b) {
11885 return -TARGET_EFAULT;
11886 }
11887 }
11888 ret = get_errno(flistxattr(arg1, b, arg3));
11889 unlock_user(b, arg2, arg3);
11890 return ret;
11891 }
11892 case TARGET_NR_setxattr:
11893 case TARGET_NR_lsetxattr:
11894 {
11895 void *p, *n, *v = 0;
11896 if (arg3) {
11897 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11898 if (!v) {
11899 return -TARGET_EFAULT;
11900 }
11901 }
11902 p = lock_user_string(arg1);
11903 n = lock_user_string(arg2);
11904 if (p && n) {
11905 if (num == TARGET_NR_setxattr) {
11906 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11907 } else {
11908 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11909 }
11910 } else {
11911 ret = -TARGET_EFAULT;
11912 }
11913 unlock_user(p, arg1, 0);
11914 unlock_user(n, arg2, 0);
11915 unlock_user(v, arg3, 0);
11916 }
11917 return ret;
11918 case TARGET_NR_fsetxattr:
11919 {
11920 void *n, *v = 0;
11921 if (arg3) {
11922 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11923 if (!v) {
11924 return -TARGET_EFAULT;
11925 }
11926 }
11927 n = lock_user_string(arg2);
11928 if (n) {
11929 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11930 } else {
11931 ret = -TARGET_EFAULT;
11932 }
11933 unlock_user(n, arg2, 0);
11934 unlock_user(v, arg3, 0);
11935 }
11936 return ret;
11937 case TARGET_NR_getxattr:
11938 case TARGET_NR_lgetxattr:
11939 {
11940 void *p, *n, *v = 0;
11941 if (arg3) {
11942 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11943 if (!v) {
11944 return -TARGET_EFAULT;
11945 }
11946 }
11947 p = lock_user_string(arg1);
11948 n = lock_user_string(arg2);
11949 if (p && n) {
11950 if (num == TARGET_NR_getxattr) {
11951 ret = get_errno(getxattr(p, n, v, arg4));
11952 } else {
11953 ret = get_errno(lgetxattr(p, n, v, arg4));
11954 }
11955 } else {
11956 ret = -TARGET_EFAULT;
11957 }
11958 unlock_user(p, arg1, 0);
11959 unlock_user(n, arg2, 0);
11960 unlock_user(v, arg3, arg4);
11961 }
11962 return ret;
11963 case TARGET_NR_fgetxattr:
11964 {
11965 void *n, *v = 0;
11966 if (arg3) {
11967 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11968 if (!v) {
11969 return -TARGET_EFAULT;
11970 }
11971 }
11972 n = lock_user_string(arg2);
11973 if (n) {
11974 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11975 } else {
11976 ret = -TARGET_EFAULT;
11977 }
11978 unlock_user(n, arg2, 0);
11979 unlock_user(v, arg3, arg4);
11980 }
11981 return ret;
11982 case TARGET_NR_removexattr:
11983 case TARGET_NR_lremovexattr:
11984 {
11985 void *p, *n;
11986 p = lock_user_string(arg1);
11987 n = lock_user_string(arg2);
11988 if (p && n) {
11989 if (num == TARGET_NR_removexattr) {
11990 ret = get_errno(removexattr(p, n));
11991 } else {
11992 ret = get_errno(lremovexattr(p, n));
11993 }
11994 } else {
11995 ret = -TARGET_EFAULT;
11996 }
11997 unlock_user(p, arg1, 0);
11998 unlock_user(n, arg2, 0);
11999 }
12000 return ret;
12001 case TARGET_NR_fremovexattr:
12002 {
12003 void *n;
12004 n = lock_user_string(arg2);
12005 if (n) {
12006 ret = get_errno(fremovexattr(arg1, n));
12007 } else {
12008 ret = -TARGET_EFAULT;
12009 }
12010 unlock_user(n, arg2, 0);
12011 }
12012 return ret;
12013 #endif
12014 #endif /* CONFIG_ATTR */
12015 #ifdef TARGET_NR_set_thread_area
12016 case TARGET_NR_set_thread_area:
12017 #if defined(TARGET_MIPS)
12018 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
12019 return 0;
12020 #elif defined(TARGET_CRIS)
12021 if (arg1 & 0xff)
12022 ret = -TARGET_EINVAL;
12023 else {
12024 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
12025 ret = 0;
12026 }
12027 return ret;
12028 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
12029 return do_set_thread_area(cpu_env, arg1);
12030 #elif defined(TARGET_M68K)
12031 {
12032 TaskState *ts = cpu->opaque;
12033 ts->tp_value = arg1;
12034 return 0;
12035 }
12036 #else
12037 return -TARGET_ENOSYS;
12038 #endif
12039 #endif
12040 #ifdef TARGET_NR_get_thread_area
12041 case TARGET_NR_get_thread_area:
12042 #if defined(TARGET_I386) && defined(TARGET_ABI32)
12043 return do_get_thread_area(cpu_env, arg1);
12044 #elif defined(TARGET_M68K)
12045 {
12046 TaskState *ts = cpu->opaque;
12047 return ts->tp_value;
12048 }
12049 #else
12050 return -TARGET_ENOSYS;
12051 #endif
12052 #endif
12053 #ifdef TARGET_NR_getdomainname
12054 case TARGET_NR_getdomainname:
12055 return -TARGET_ENOSYS;
12056 #endif
12057
12058 #ifdef TARGET_NR_clock_settime
12059 case TARGET_NR_clock_settime:
12060 {
12061 struct timespec ts;
12062
12063 ret = target_to_host_timespec(&ts, arg2);
12064 if (!is_error(ret)) {
12065 ret = get_errno(clock_settime(arg1, &ts));
12066 }
12067 return ret;
12068 }
12069 #endif
12070 #ifdef TARGET_NR_clock_settime64
12071 case TARGET_NR_clock_settime64:
12072 {
12073 struct timespec ts;
12074
12075 ret = target_to_host_timespec64(&ts, arg2);
12076 if (!is_error(ret)) {
12077 ret = get_errno(clock_settime(arg1, &ts));
12078 }
12079 return ret;
12080 }
12081 #endif
12082 #ifdef TARGET_NR_clock_gettime
12083 case TARGET_NR_clock_gettime:
12084 {
12085 struct timespec ts;
12086 ret = get_errno(clock_gettime(arg1, &ts));
12087 if (!is_error(ret)) {
12088 ret = host_to_target_timespec(arg2, &ts);
12089 }
12090 return ret;
12091 }
12092 #endif
12093 #ifdef TARGET_NR_clock_gettime64
12094 case TARGET_NR_clock_gettime64:
12095 {
12096 struct timespec ts;
12097 ret = get_errno(clock_gettime(arg1, &ts));
12098 if (!is_error(ret)) {
12099 ret = host_to_target_timespec64(arg2, &ts);
12100 }
12101 return ret;
12102 }
12103 #endif
12104 #ifdef TARGET_NR_clock_getres
12105 case TARGET_NR_clock_getres:
12106 {
12107 struct timespec ts;
12108 ret = get_errno(clock_getres(arg1, &ts));
12109 if (!is_error(ret)) {
12110 host_to_target_timespec(arg2, &ts);
12111 }
12112 return ret;
12113 }
12114 #endif
12115 #ifdef TARGET_NR_clock_getres_time64
12116 case TARGET_NR_clock_getres_time64:
12117 {
12118 struct timespec ts;
12119 ret = get_errno(clock_getres(arg1, &ts));
12120 if (!is_error(ret)) {
12121 host_to_target_timespec64(arg2, &ts);
12122 }
12123 return ret;
12124 }
12125 #endif
12126 #ifdef TARGET_NR_clock_nanosleep
12127 case TARGET_NR_clock_nanosleep:
12128 {
12129 struct timespec ts;
12130 if (target_to_host_timespec(&ts, arg3)) {
12131 return -TARGET_EFAULT;
12132 }
12133 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12134 &ts, arg4 ? &ts : NULL));
12135 /*
12136 * if the call is interrupted by a signal handler, it fails
12137 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not
12138 * TIMER_ABSTIME, it returns the remaining unslept time in arg4.
12139 */
12140 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12141 host_to_target_timespec(arg4, &ts)) {
12142 return -TARGET_EFAULT;
12143 }
12144
12145 return ret;
12146 }
12147 #endif
12148 #ifdef TARGET_NR_clock_nanosleep_time64
12149 case TARGET_NR_clock_nanosleep_time64:
12150 {
12151 struct timespec ts;
12152
12153 if (target_to_host_timespec64(&ts, arg3)) {
12154 return -TARGET_EFAULT;
12155 }
12156
12157 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12158 &ts, arg4 ? &ts : NULL));
12159
12160 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12161 host_to_target_timespec64(arg4, &ts)) {
12162 return -TARGET_EFAULT;
12163 }
12164 return ret;
12165 }
12166 #endif
12167
12168 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
12169 case TARGET_NR_set_tid_address:
12170 return get_errno(set_tid_address((int *)g2h(arg1)));
12171 #endif
12172
12173 case TARGET_NR_tkill:
12174 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
12175
12176 case TARGET_NR_tgkill:
12177 return get_errno(safe_tgkill((int)arg1, (int)arg2,
12178 target_to_host_signal(arg3)));
12179
12180 #ifdef TARGET_NR_set_robust_list
12181 case TARGET_NR_set_robust_list:
12182 case TARGET_NR_get_robust_list:
12183 /* The ABI for supporting robust futexes has userspace pass
12184 * the kernel a pointer to a linked list which is updated by
12185 * userspace after the syscall; the list is walked by the kernel
12186 * when the thread exits. Since the linked list in QEMU guest
12187 * memory isn't a valid linked list for the host and we have
12188 * no way to reliably intercept the thread-death event, we can't
12189 * support these. Silently return ENOSYS so that guest userspace
12190 * falls back to a non-robust futex implementation (which should
12191 * be OK except in the corner case of the guest crashing while
12192 * holding a mutex that is shared with another process via
12193 * shared memory).
12194 */
12195 return -TARGET_ENOSYS;
12196 #endif
12197
12198 #if defined(TARGET_NR_utimensat)
12199 case TARGET_NR_utimensat:
12200 {
12201 struct timespec *tsp, ts[2];
12202 if (!arg3) {
12203 tsp = NULL;
12204 } else {
12205 if (target_to_host_timespec(ts, arg3)) {
12206 return -TARGET_EFAULT;
12207 }
12208 if (target_to_host_timespec(ts + 1, arg3 +
12209 sizeof(struct target_timespec))) {
12210 return -TARGET_EFAULT;
12211 }
12212 tsp = ts;
12213 }
12214 if (!arg2)
12215 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12216 else {
12217 if (!(p = lock_user_string(arg2))) {
12218 return -TARGET_EFAULT;
12219 }
12220 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12221 unlock_user(p, arg2, 0);
12222 }
12223 }
12224 return ret;
12225 #endif
12226 #ifdef TARGET_NR_utimensat_time64
12227 case TARGET_NR_utimensat_time64:
12228 {
12229 struct timespec *tsp, ts[2];
12230 if (!arg3) {
12231 tsp = NULL;
12232 } else {
12233 if (target_to_host_timespec64(ts, arg3)) {
12234 return -TARGET_EFAULT;
12235 }
12236 if (target_to_host_timespec64(ts + 1, arg3 +
12237 sizeof(struct target__kernel_timespec))) {
12238 return -TARGET_EFAULT;
12239 }
12240 tsp = ts;
12241 }
12242 if (!arg2)
12243 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12244 else {
12245 p = lock_user_string(arg2);
12246 if (!p) {
12247 return -TARGET_EFAULT;
12248 }
12249 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12250 unlock_user(p, arg2, 0);
12251 }
12252 }
12253 return ret;
12254 #endif
12255 #ifdef TARGET_NR_futex
12256 case TARGET_NR_futex:
12257 return do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
12258 #endif
12259 #ifdef TARGET_NR_futex_time64
12260 case TARGET_NR_futex_time64:
12261 return do_futex_time64(arg1, arg2, arg3, arg4, arg5, arg6);
12262 #endif
12263 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
12264 case TARGET_NR_inotify_init:
12265 ret = get_errno(sys_inotify_init());
12266 if (ret >= 0) {
12267 fd_trans_register(ret, &target_inotify_trans);
12268 }
12269 return ret;
12270 #endif
12271 #ifdef CONFIG_INOTIFY1
12272 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
12273 case TARGET_NR_inotify_init1:
12274 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
12275 fcntl_flags_tbl)));
12276 if (ret >= 0) {
12277 fd_trans_register(ret, &target_inotify_trans);
12278 }
12279 return ret;
12280 #endif
12281 #endif
12282 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
12283 case TARGET_NR_inotify_add_watch:
12284 p = lock_user_string(arg2);
12285 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
12286 unlock_user(p, arg2, 0);
12287 return ret;
12288 #endif
12289 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
12290 case TARGET_NR_inotify_rm_watch:
12291 return get_errno(sys_inotify_rm_watch(arg1, arg2));
12292 #endif
12293
12294 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
12295 case TARGET_NR_mq_open:
12296 {
12297 struct mq_attr posix_mq_attr;
12298 struct mq_attr *pposix_mq_attr;
12299 int host_flags;
12300
12301 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
12302 pposix_mq_attr = NULL;
12303 if (arg4) {
12304 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
12305 return -TARGET_EFAULT;
12306 }
12307 pposix_mq_attr = &posix_mq_attr;
12308 }
12309 p = lock_user_string(arg1 - 1);
12310 if (!p) {
12311 return -TARGET_EFAULT;
12312 }
12313 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
12314 unlock_user (p, arg1, 0);
12315 }
12316 return ret;
12317
12318 case TARGET_NR_mq_unlink:
12319 p = lock_user_string(arg1 - 1);
12320 if (!p) {
12321 return -TARGET_EFAULT;
12322 }
12323 ret = get_errno(mq_unlink(p));
12324 unlock_user (p, arg1, 0);
12325 return ret;
12326
12327 #ifdef TARGET_NR_mq_timedsend
12328 case TARGET_NR_mq_timedsend:
12329 {
12330 struct timespec ts;
12331
12332 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12333 if (arg5 != 0) {
12334 if (target_to_host_timespec(&ts, arg5)) {
12335 return -TARGET_EFAULT;
12336 }
12337 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12338 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12339 return -TARGET_EFAULT;
12340 }
12341 } else {
12342 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12343 }
12344 unlock_user (p, arg2, arg3);
12345 }
12346 return ret;
12347 #endif
12348 #ifdef TARGET_NR_mq_timedsend_time64
12349 case TARGET_NR_mq_timedsend_time64:
12350 {
12351 struct timespec ts;
12352
12353 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12354 if (arg5 != 0) {
12355 if (target_to_host_timespec64(&ts, arg5)) {
12356 return -TARGET_EFAULT;
12357 }
12358 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12359 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12360 return -TARGET_EFAULT;
12361 }
12362 } else {
12363 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12364 }
12365 unlock_user(p, arg2, arg3);
12366 }
12367 return ret;
12368 #endif
12369
12370 #ifdef TARGET_NR_mq_timedreceive
12371 case TARGET_NR_mq_timedreceive:
12372 {
12373 struct timespec ts;
12374 unsigned int prio;
12375
12376 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12377 if (arg5 != 0) {
12378 if (target_to_host_timespec(&ts, arg5)) {
12379 return -TARGET_EFAULT;
12380 }
12381 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12382 &prio, &ts));
12383 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12384 return -TARGET_EFAULT;
12385 }
12386 } else {
12387 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12388 &prio, NULL));
12389 }
12390 unlock_user (p, arg2, arg3);
12391 if (arg4 != 0)
12392 put_user_u32(prio, arg4);
12393 }
12394 return ret;
12395 #endif
12396 #ifdef TARGET_NR_mq_timedreceive_time64
12397 case TARGET_NR_mq_timedreceive_time64:
12398 {
12399 struct timespec ts;
12400 unsigned int prio;
12401
12402 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12403 if (arg5 != 0) {
12404 if (target_to_host_timespec64(&ts, arg5)) {
12405 return -TARGET_EFAULT;
12406 }
12407 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12408 &prio, &ts));
12409 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12410 return -TARGET_EFAULT;
12411 }
12412 } else {
12413 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12414 &prio, NULL));
12415 }
12416 unlock_user(p, arg2, arg3);
12417 if (arg4 != 0) {
12418 put_user_u32(prio, arg4);
12419 }
12420 }
12421 return ret;
12422 #endif
12423
12424 /* Not implemented for now... */
12425 /* case TARGET_NR_mq_notify: */
12426 /* break; */
12427
12428 case TARGET_NR_mq_getsetattr:
12429 {
12430 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
12431 ret = 0;
12432 if (arg2 != 0) {
12433 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
12434 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
12435 &posix_mq_attr_out));
12436 } else if (arg3 != 0) {
12437 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
12438 }
12439 if (ret == 0 && arg3 != 0) {
12440 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
12441 }
12442 }
12443 return ret;
12444 #endif
12445
12446 #ifdef CONFIG_SPLICE
12447 #ifdef TARGET_NR_tee
12448 case TARGET_NR_tee:
12449 {
12450 ret = get_errno(tee(arg1,arg2,arg3,arg4));
12451 }
12452 return ret;
12453 #endif
12454 #ifdef TARGET_NR_splice
12455 case TARGET_NR_splice:
12456 {
12457 loff_t loff_in, loff_out;
12458 loff_t *ploff_in = NULL, *ploff_out = NULL;
12459 if (arg2) {
12460 if (get_user_u64(loff_in, arg2)) {
12461 return -TARGET_EFAULT;
12462 }
12463 ploff_in = &loff_in;
12464 }
12465 if (arg4) {
12466 if (get_user_u64(loff_out, arg4)) {
12467 return -TARGET_EFAULT;
12468 }
12469 ploff_out = &loff_out;
12470 }
12471 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
12472 if (arg2) {
12473 if (put_user_u64(loff_in, arg2)) {
12474 return -TARGET_EFAULT;
12475 }
12476 }
12477 if (arg4) {
12478 if (put_user_u64(loff_out, arg4)) {
12479 return -TARGET_EFAULT;
12480 }
12481 }
12482 }
12483 return ret;
12484 #endif
12485 #ifdef TARGET_NR_vmsplice
12486 case TARGET_NR_vmsplice:
12487 {
12488 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
12489 if (vec != NULL) {
12490 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
12491 unlock_iovec(vec, arg2, arg3, 0);
12492 } else {
12493 ret = -host_to_target_errno(errno);
12494 }
12495 }
12496 return ret;
12497 #endif
12498 #endif /* CONFIG_SPLICE */
12499 #ifdef CONFIG_EVENTFD
12500 #if defined(TARGET_NR_eventfd)
12501 case TARGET_NR_eventfd:
12502 ret = get_errno(eventfd(arg1, 0));
12503 if (ret >= 0) {
12504 fd_trans_register(ret, &target_eventfd_trans);
12505 }
12506 return ret;
12507 #endif
12508 #if defined(TARGET_NR_eventfd2)
12509 case TARGET_NR_eventfd2:
12510 {
12511 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
12512 if (arg2 & TARGET_O_NONBLOCK) {
12513 host_flags |= O_NONBLOCK;
12514 }
12515 if (arg2 & TARGET_O_CLOEXEC) {
12516 host_flags |= O_CLOEXEC;
12517 }
12518 ret = get_errno(eventfd(arg1, host_flags));
12519 if (ret >= 0) {
12520 fd_trans_register(ret, &target_eventfd_trans);
12521 }
12522 return ret;
12523 }
12524 #endif
12525 #endif /* CONFIG_EVENTFD */
12526 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
12527 case TARGET_NR_fallocate:
12528 #if TARGET_ABI_BITS == 32
12529 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
12530 target_offset64(arg5, arg6)));
12531 #else
12532 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
12533 #endif
12534 return ret;
12535 #endif
12536 #if defined(CONFIG_SYNC_FILE_RANGE)
12537 #if defined(TARGET_NR_sync_file_range)
12538 case TARGET_NR_sync_file_range:
12539 #if TARGET_ABI_BITS == 32
12540 #if defined(TARGET_MIPS)
12541 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12542 target_offset64(arg5, arg6), arg7));
12543 #else
12544 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
12545 target_offset64(arg4, arg5), arg6));
12546 #endif /* !TARGET_MIPS */
12547 #else
12548 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
12549 #endif
12550 return ret;
12551 #endif
12552 #if defined(TARGET_NR_sync_file_range2) || \
12553 defined(TARGET_NR_arm_sync_file_range)
12554 #if defined(TARGET_NR_sync_file_range2)
12555 case TARGET_NR_sync_file_range2:
12556 #endif
12557 #if defined(TARGET_NR_arm_sync_file_range)
12558 case TARGET_NR_arm_sync_file_range:
12559 #endif
12560 /* This is like sync_file_range but the arguments are reordered */
12561 #if TARGET_ABI_BITS == 32
12562 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12563 target_offset64(arg5, arg6), arg2));
12564 #else
12565 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
12566 #endif
12567 return ret;
12568 #endif
12569 #endif
12570 #if defined(TARGET_NR_signalfd4)
12571 case TARGET_NR_signalfd4:
12572 return do_signalfd4(arg1, arg2, arg4);
12573 #endif
12574 #if defined(TARGET_NR_signalfd)
12575 case TARGET_NR_signalfd:
12576 return do_signalfd4(arg1, arg2, 0);
12577 #endif
12578 #if defined(CONFIG_EPOLL)
12579 #if defined(TARGET_NR_epoll_create)
12580 case TARGET_NR_epoll_create:
12581 return get_errno(epoll_create(arg1));
12582 #endif
12583 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
12584 case TARGET_NR_epoll_create1:
12585 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
12586 #endif
12587 #if defined(TARGET_NR_epoll_ctl)
12588 case TARGET_NR_epoll_ctl:
12589 {
12590 struct epoll_event ep;
12591 struct epoll_event *epp = 0;
12592 if (arg4) {
12593 struct target_epoll_event *target_ep;
12594 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
12595 return -TARGET_EFAULT;
12596 }
12597 ep.events = tswap32(target_ep->events);
12598 /* The epoll_data_t union is just opaque data to the kernel,
12599 * so we transfer all 64 bits across and need not worry what
12600 * actual data type it is.
12601 */
12602 ep.data.u64 = tswap64(target_ep->data.u64);
12603 unlock_user_struct(target_ep, arg4, 0);
12604 epp = &ep;
12605 }
12606 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
12607 }
12608 #endif
12609
12610 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
12611 #if defined(TARGET_NR_epoll_wait)
12612 case TARGET_NR_epoll_wait:
12613 #endif
12614 #if defined(TARGET_NR_epoll_pwait)
12615 case TARGET_NR_epoll_pwait:
12616 #endif
12617 {
12618 struct target_epoll_event *target_ep;
12619 struct epoll_event *ep;
12620 int epfd = arg1;
12621 int maxevents = arg3;
12622 int timeout = arg4;
12623
12624 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
12625 return -TARGET_EINVAL;
12626 }
12627
12628 target_ep = lock_user(VERIFY_WRITE, arg2,
12629 maxevents * sizeof(struct target_epoll_event), 1);
12630 if (!target_ep) {
12631 return -TARGET_EFAULT;
12632 }
12633
12634 ep = g_try_new(struct epoll_event, maxevents);
12635 if (!ep) {
12636 unlock_user(target_ep, arg2, 0);
12637 return -TARGET_ENOMEM;
12638 }
12639
12640 switch (num) {
12641 #if defined(TARGET_NR_epoll_pwait)
12642 case TARGET_NR_epoll_pwait:
12643 {
12644 target_sigset_t *target_set;
12645 sigset_t _set, *set = &_set;
12646
12647 if (arg5) {
12648 if (arg6 != sizeof(target_sigset_t)) {
12649 ret = -TARGET_EINVAL;
12650 break;
12651 }
12652
12653 target_set = lock_user(VERIFY_READ, arg5,
12654 sizeof(target_sigset_t), 1);
12655 if (!target_set) {
12656 ret = -TARGET_EFAULT;
12657 break;
12658 }
12659 target_to_host_sigset(set, target_set);
12660 unlock_user(target_set, arg5, 0);
12661 } else {
12662 set = NULL;
12663 }
12664
12665 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12666 set, SIGSET_T_SIZE));
12667 break;
12668 }
12669 #endif
12670 #if defined(TARGET_NR_epoll_wait)
12671 case TARGET_NR_epoll_wait:
12672 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12673 NULL, 0));
12674 break;
12675 #endif
12676 default:
12677 ret = -TARGET_ENOSYS;
12678 }
12679 if (!is_error(ret)) {
12680 int i;
12681 for (i = 0; i < ret; i++) {
12682 target_ep[i].events = tswap32(ep[i].events);
12683 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
12684 }
12685 unlock_user(target_ep, arg2,
12686 ret * sizeof(struct target_epoll_event));
12687 } else {
12688 unlock_user(target_ep, arg2, 0);
12689 }
12690 g_free(ep);
12691 return ret;
12692 }
12693 #endif
12694 #endif
12695 #ifdef TARGET_NR_prlimit64
12696 case TARGET_NR_prlimit64:
12697 {
12698 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
12699 struct target_rlimit64 *target_rnew, *target_rold;
12700 struct host_rlimit64 rnew, rold, *rnewp = 0;
12701 int resource = target_to_host_resource(arg2);
12702
12703 if (arg3 && (resource != RLIMIT_AS &&
12704 resource != RLIMIT_DATA &&
12705 resource != RLIMIT_STACK)) {
12706 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
12707 return -TARGET_EFAULT;
12708 }
12709 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
12710 rnew.rlim_max = tswap64(target_rnew->rlim_max);
12711 unlock_user_struct(target_rnew, arg3, 0);
12712 rnewp = &rnew;
12713 }
12714
12715 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
12716 if (!is_error(ret) && arg4) {
12717 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
12718 return -TARGET_EFAULT;
12719 }
12720 target_rold->rlim_cur = tswap64(rold.rlim_cur);
12721 target_rold->rlim_max = tswap64(rold.rlim_max);
12722 unlock_user_struct(target_rold, arg4, 1);
12723 }
12724 return ret;
12725 }
12726 #endif
12727 #ifdef TARGET_NR_gethostname
12728 case TARGET_NR_gethostname:
12729 {
12730 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
12731 if (name) {
12732 ret = get_errno(gethostname(name, arg2));
12733 unlock_user(name, arg1, arg2);
12734 } else {
12735 ret = -TARGET_EFAULT;
12736 }
12737 return ret;
12738 }
12739 #endif
12740 #ifdef TARGET_NR_atomic_cmpxchg_32
12741 case TARGET_NR_atomic_cmpxchg_32:
12742 {
12743 /* should use start_exclusive from main.c */
12744 abi_ulong mem_value;
12745 if (get_user_u32(mem_value, arg6)) {
12746 target_siginfo_t info;
12747 info.si_signo = SIGSEGV;
12748 info.si_errno = 0;
12749 info.si_code = TARGET_SEGV_MAPERR;
12750 info._sifields._sigfault._addr = arg6;
12751 queue_signal((CPUArchState *)cpu_env, info.si_signo,
12752 QEMU_SI_FAULT, &info);
12753 ret = 0xdeadbeef;
12754
12755 }
12756 if (mem_value == arg2)
12757 put_user_u32(arg1, arg6);
12758 return mem_value;
12759 }
12760 #endif
12761 #ifdef TARGET_NR_atomic_barrier
12762 case TARGET_NR_atomic_barrier:
12763 /* Like the kernel implementation and the
12764 qemu arm barrier, no-op this? */
12765 return 0;
12766 #endif
12767
12768 #ifdef TARGET_NR_timer_create
12769 case TARGET_NR_timer_create:
12770 {
12771 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
12772
12773 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
12774
12775 int clkid = arg1;
12776 int timer_index = next_free_host_timer();
12777
12778 if (timer_index < 0) {
12779 ret = -TARGET_EAGAIN;
12780 } else {
12781 timer_t *phtimer = g_posix_timers + timer_index;
12782
12783 if (arg2) {
12784 phost_sevp = &host_sevp;
12785 ret = target_to_host_sigevent(phost_sevp, arg2);
12786 if (ret != 0) {
12787 return ret;
12788 }
12789 }
12790
12791 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
12792 if (ret) {
12793 phtimer = NULL;
12794 } else {
12795 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
12796 return -TARGET_EFAULT;
12797 }
12798 }
12799 }
12800 return ret;
12801 }
12802 #endif
12803
12804 #ifdef TARGET_NR_timer_settime
12805 case TARGET_NR_timer_settime:
12806 {
12807 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
12808 * struct itimerspec * old_value */
12809 target_timer_t timerid = get_timer_id(arg1);
12810
12811 if (timerid < 0) {
12812 ret = timerid;
12813 } else if (arg3 == 0) {
12814 ret = -TARGET_EINVAL;
12815 } else {
12816 timer_t htimer = g_posix_timers[timerid];
12817 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12818
12819 if (target_to_host_itimerspec(&hspec_new, arg3)) {
12820 return -TARGET_EFAULT;
12821 }
12822 ret = get_errno(
12823 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12824 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
12825 return -TARGET_EFAULT;
12826 }
12827 }
12828 return ret;
12829 }
12830 #endif
12831
12832 #ifdef TARGET_NR_timer_settime64
12833 case TARGET_NR_timer_settime64:
12834 {
12835 target_timer_t timerid = get_timer_id(arg1);
12836
12837 if (timerid < 0) {
12838 ret = timerid;
12839 } else if (arg3 == 0) {
12840 ret = -TARGET_EINVAL;
12841 } else {
12842 timer_t htimer = g_posix_timers[timerid];
12843 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12844
12845 if (target_to_host_itimerspec64(&hspec_new, arg3)) {
12846 return -TARGET_EFAULT;
12847 }
12848 ret = get_errno(
12849 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12850 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) {
12851 return -TARGET_EFAULT;
12852 }
12853 }
12854 return ret;
12855 }
12856 #endif
12857
12858 #ifdef TARGET_NR_timer_gettime
12859 case TARGET_NR_timer_gettime:
12860 {
12861 /* args: timer_t timerid, struct itimerspec *curr_value */
12862 target_timer_t timerid = get_timer_id(arg1);
12863
12864 if (timerid < 0) {
12865 ret = timerid;
12866 } else if (!arg2) {
12867 ret = -TARGET_EFAULT;
12868 } else {
12869 timer_t htimer = g_posix_timers[timerid];
12870 struct itimerspec hspec;
12871 ret = get_errno(timer_gettime(htimer, &hspec));
12872
12873 if (host_to_target_itimerspec(arg2, &hspec)) {
12874 ret = -TARGET_EFAULT;
12875 }
12876 }
12877 return ret;
12878 }
12879 #endif
12880
12881 #ifdef TARGET_NR_timer_gettime64
12882 case TARGET_NR_timer_gettime64:
12883 {
12884 /* args: timer_t timerid, struct itimerspec64 *curr_value */
12885 target_timer_t timerid = get_timer_id(arg1);
12886
12887 if (timerid < 0) {
12888 ret = timerid;
12889 } else if (!arg2) {
12890 ret = -TARGET_EFAULT;
12891 } else {
12892 timer_t htimer = g_posix_timers[timerid];
12893 struct itimerspec hspec;
12894 ret = get_errno(timer_gettime(htimer, &hspec));
12895
12896 if (host_to_target_itimerspec64(arg2, &hspec)) {
12897 ret = -TARGET_EFAULT;
12898 }
12899 }
12900 return ret;
12901 }
12902 #endif
12903
12904 #ifdef TARGET_NR_timer_getoverrun
12905 case TARGET_NR_timer_getoverrun:
12906 {
12907 /* args: timer_t timerid */
12908 target_timer_t timerid = get_timer_id(arg1);
12909
12910 if (timerid < 0) {
12911 ret = timerid;
12912 } else {
12913 timer_t htimer = g_posix_timers[timerid];
12914 ret = get_errno(timer_getoverrun(htimer));
12915 }
12916 return ret;
12917 }
12918 #endif
12919
12920 #ifdef TARGET_NR_timer_delete
12921 case TARGET_NR_timer_delete:
12922 {
12923 /* args: timer_t timerid */
12924 target_timer_t timerid = get_timer_id(arg1);
12925
12926 if (timerid < 0) {
12927 ret = timerid;
12928 } else {
12929 timer_t htimer = g_posix_timers[timerid];
12930 ret = get_errno(timer_delete(htimer));
12931 g_posix_timers[timerid] = 0;
12932 }
12933 return ret;
12934 }
12935 #endif
12936
12937 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
12938 case TARGET_NR_timerfd_create:
12939 return get_errno(timerfd_create(arg1,
12940 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
12941 #endif
12942
12943 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
12944 case TARGET_NR_timerfd_gettime:
12945 {
12946 struct itimerspec its_curr;
12947
12948 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12949
12950 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
12951 return -TARGET_EFAULT;
12952 }
12953 }
12954 return ret;
12955 #endif
12956
12957 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD)
12958 case TARGET_NR_timerfd_gettime64:
12959 {
12960 struct itimerspec its_curr;
12961
12962 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12963
12964 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) {
12965 return -TARGET_EFAULT;
12966 }
12967 }
12968 return ret;
12969 #endif
12970
12971 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
12972 case TARGET_NR_timerfd_settime:
12973 {
12974 struct itimerspec its_new, its_old, *p_new;
12975
12976 if (arg3) {
12977 if (target_to_host_itimerspec(&its_new, arg3)) {
12978 return -TARGET_EFAULT;
12979 }
12980 p_new = &its_new;
12981 } else {
12982 p_new = NULL;
12983 }
12984
12985 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12986
12987 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
12988 return -TARGET_EFAULT;
12989 }
12990 }
12991 return ret;
12992 #endif
12993
12994 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)
12995 case TARGET_NR_timerfd_settime64:
12996 {
12997 struct itimerspec its_new, its_old, *p_new;
12998
12999 if (arg3) {
13000 if (target_to_host_itimerspec64(&its_new, arg3)) {
13001 return -TARGET_EFAULT;
13002 }
13003 p_new = &its_new;
13004 } else {
13005 p_new = NULL;
13006 }
13007
13008 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
13009
13010 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) {
13011 return -TARGET_EFAULT;
13012 }
13013 }
13014 return ret;
13015 #endif
13016
13017 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
13018 case TARGET_NR_ioprio_get:
13019 return get_errno(ioprio_get(arg1, arg2));
13020 #endif
13021
13022 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
13023 case TARGET_NR_ioprio_set:
13024 return get_errno(ioprio_set(arg1, arg2, arg3));
13025 #endif
13026
13027 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
13028 case TARGET_NR_setns:
13029 return get_errno(setns(arg1, arg2));
13030 #endif
13031 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
13032 case TARGET_NR_unshare:
13033 return get_errno(unshare(arg1));
13034 #endif
13035 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
13036 case TARGET_NR_kcmp:
13037 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
13038 #endif
13039 #ifdef TARGET_NR_swapcontext
13040 case TARGET_NR_swapcontext:
13041 /* PowerPC specific. */
13042 return do_swapcontext(cpu_env, arg1, arg2, arg3);
13043 #endif
13044 #ifdef TARGET_NR_memfd_create
13045 case TARGET_NR_memfd_create:
13046 p = lock_user_string(arg1);
13047 if (!p) {
13048 return -TARGET_EFAULT;
13049 }
13050 ret = get_errno(memfd_create(p, arg2));
13051 fd_trans_unregister(ret);
13052 unlock_user(p, arg1, 0);
13053 return ret;
13054 #endif
13055 #if defined TARGET_NR_membarrier && defined __NR_membarrier
13056 case TARGET_NR_membarrier:
13057 return get_errno(membarrier(arg1, arg2));
13058 #endif
13059
13060 default:
13061 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
13062 return -TARGET_ENOSYS;
13063 }
13064 return ret;
13065 }
13066
13067 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
13068 abi_long arg2, abi_long arg3, abi_long arg4,
13069 abi_long arg5, abi_long arg6, abi_long arg7,
13070 abi_long arg8)
13071 {
13072 CPUState *cpu = env_cpu(cpu_env);
13073 abi_long ret;
13074
13075 #ifdef DEBUG_ERESTARTSYS
13076 /* Debug-only code for exercising the syscall-restart code paths
13077 * in the per-architecture cpu main loops: restart every syscall
13078 * the guest makes once before letting it through.
13079 */
13080 {
13081 static bool flag;
13082 flag = !flag;
13083 if (flag) {
13084 return -TARGET_ERESTARTSYS;
13085 }
13086 }
13087 #endif
13088
13089 record_syscall_start(cpu, num, arg1,
13090 arg2, arg3, arg4, arg5, arg6, arg7, arg8);
13091
13092 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13093 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6);
13094 }
13095
13096 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
13097 arg5, arg6, arg7, arg8);
13098
13099 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13100 print_syscall_ret(cpu_env, num, ret, arg1, arg2,
13101 arg3, arg4, arg5, arg6);
13102 }
13103
13104 record_syscall_return(cpu, num, ret);
13105 return ret;
13106 }
AR7 emulation for QEMU