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linux-user: Disable more prctl subcodes
[mirror_qemu.git] / linux-user / syscall.c
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/in.h>
55 #include <netinet/ip.h>
56 #include <netinet/tcp.h>
57 #include <netinet/udp.h>
58 #include <linux/wireless.h>
59 #include <linux/icmp.h>
60 #include <linux/icmpv6.h>
61 #include <linux/if_tun.h>
62 #include <linux/in6.h>
63 #include <linux/errqueue.h>
64 #include <linux/random.h>
65 #ifdef CONFIG_TIMERFD
66 #include <sys/timerfd.h>
67 #endif
68 #ifdef CONFIG_EVENTFD
69 #include <sys/eventfd.h>
70 #endif
71 #ifdef CONFIG_EPOLL
72 #include <sys/epoll.h>
73 #endif
74 #ifdef CONFIG_ATTR
75 #include "qemu/xattr.h"
76 #endif
77 #ifdef CONFIG_SENDFILE
78 #include <sys/sendfile.h>
79 #endif
80 #ifdef HAVE_SYS_KCOV_H
81 #include <sys/kcov.h>
82 #endif
83
84 #define termios host_termios
85 #define winsize host_winsize
86 #define termio host_termio
87 #define sgttyb host_sgttyb /* same as target */
88 #define tchars host_tchars /* same as target */
89 #define ltchars host_ltchars /* same as target */
90
91 #include <linux/termios.h>
92 #include <linux/unistd.h>
93 #include <linux/cdrom.h>
94 #include <linux/hdreg.h>
95 #include <linux/soundcard.h>
96 #include <linux/kd.h>
97 #include <linux/mtio.h>
98 #include <linux/fs.h>
99 #include <linux/fd.h>
100 #if defined(CONFIG_FIEMAP)
101 #include <linux/fiemap.h>
102 #endif
103 #include <linux/fb.h>
104 #if defined(CONFIG_USBFS)
105 #include <linux/usbdevice_fs.h>
106 #include <linux/usb/ch9.h>
107 #endif
108 #include <linux/vt.h>
109 #include <linux/dm-ioctl.h>
110 #include <linux/reboot.h>
111 #include <linux/route.h>
112 #include <linux/filter.h>
113 #include <linux/blkpg.h>
114 #include <netpacket/packet.h>
115 #include <linux/netlink.h>
116 #include <linux/if_alg.h>
117 #include <linux/rtc.h>
118 #include <sound/asound.h>
119 #ifdef HAVE_BTRFS_H
120 #include <linux/btrfs.h>
121 #endif
122 #ifdef HAVE_DRM_H
123 #include <libdrm/drm.h>
124 #include <libdrm/i915_drm.h>
125 #endif
126 #include "linux_loop.h"
127 #include "uname.h"
128
129 #include "qemu.h"
130 #include "user-internals.h"
131 #include "strace.h"
132 #include "signal-common.h"
133 #include "loader.h"
134 #include "user-mmap.h"
135 #include "user/safe-syscall.h"
136 #include "qemu/guest-random.h"
137 #include "qemu/selfmap.h"
138 #include "user/syscall-trace.h"
139 #include "special-errno.h"
140 #include "qapi/error.h"
141 #include "fd-trans.h"
142 #include "tcg/tcg.h"
143
144 #ifndef CLONE_IO
145 #define CLONE_IO 0x80000000 /* Clone io context */
146 #endif
147
148 /* We can't directly call the host clone syscall, because this will
149 * badly confuse libc (breaking mutexes, for example). So we must
150 * divide clone flags into:
151 * * flag combinations that look like pthread_create()
152 * * flag combinations that look like fork()
153 * * flags we can implement within QEMU itself
154 * * flags we can't support and will return an error for
155 */
156 /* For thread creation, all these flags must be present; for
157 * fork, none must be present.
158 */
159 #define CLONE_THREAD_FLAGS \
160 (CLONE_VM | CLONE_FS | CLONE_FILES | \
161 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
162
163 /* These flags are ignored:
164 * CLONE_DETACHED is now ignored by the kernel;
165 * CLONE_IO is just an optimisation hint to the I/O scheduler
166 */
167 #define CLONE_IGNORED_FLAGS \
168 (CLONE_DETACHED | CLONE_IO)
169
170 /* Flags for fork which we can implement within QEMU itself */
171 #define CLONE_OPTIONAL_FORK_FLAGS \
172 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
173 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
174
175 /* Flags for thread creation which we can implement within QEMU itself */
176 #define CLONE_OPTIONAL_THREAD_FLAGS \
177 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
178 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
179
180 #define CLONE_INVALID_FORK_FLAGS \
181 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
182
183 #define CLONE_INVALID_THREAD_FLAGS \
184 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
185 CLONE_IGNORED_FLAGS))
186
187 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
188 * have almost all been allocated. We cannot support any of
189 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
190 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
191 * The checks against the invalid thread masks above will catch these.
192 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
193 */
194
195 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
196 * once. This exercises the codepaths for restart.
197 */
198 //#define DEBUG_ERESTARTSYS
199
200 //#include <linux/msdos_fs.h>
201 #define VFAT_IOCTL_READDIR_BOTH \
202 _IOC(_IOC_READ, 'r', 1, (sizeof(struct linux_dirent) + 256) * 2)
203 #define VFAT_IOCTL_READDIR_SHORT \
204 _IOC(_IOC_READ, 'r', 2, (sizeof(struct linux_dirent) + 256) * 2)
205
206 #undef _syscall0
207 #undef _syscall1
208 #undef _syscall2
209 #undef _syscall3
210 #undef _syscall4
211 #undef _syscall5
212 #undef _syscall6
213
214 #define _syscall0(type,name) \
215 static type name (void) \
216 { \
217 return syscall(__NR_##name); \
218 }
219
220 #define _syscall1(type,name,type1,arg1) \
221 static type name (type1 arg1) \
222 { \
223 return syscall(__NR_##name, arg1); \
224 }
225
226 #define _syscall2(type,name,type1,arg1,type2,arg2) \
227 static type name (type1 arg1,type2 arg2) \
228 { \
229 return syscall(__NR_##name, arg1, arg2); \
230 }
231
232 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
233 static type name (type1 arg1,type2 arg2,type3 arg3) \
234 { \
235 return syscall(__NR_##name, arg1, arg2, arg3); \
236 }
237
238 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
239 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
240 { \
241 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
242 }
243
244 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
245 type5,arg5) \
246 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
247 { \
248 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
249 }
250
251
252 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
253 type5,arg5,type6,arg6) \
254 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
255 type6 arg6) \
256 { \
257 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
258 }
259
260
261 #define __NR_sys_uname __NR_uname
262 #define __NR_sys_getcwd1 __NR_getcwd
263 #define __NR_sys_getdents __NR_getdents
264 #define __NR_sys_getdents64 __NR_getdents64
265 #define __NR_sys_getpriority __NR_getpriority
266 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
267 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
268 #define __NR_sys_syslog __NR_syslog
269 #if defined(__NR_futex)
270 # define __NR_sys_futex __NR_futex
271 #endif
272 #if defined(__NR_futex_time64)
273 # define __NR_sys_futex_time64 __NR_futex_time64
274 #endif
275 #define __NR_sys_inotify_init __NR_inotify_init
276 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
277 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
278 #define __NR_sys_statx __NR_statx
279
280 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
281 #define __NR__llseek __NR_lseek
282 #endif
283
284 /* Newer kernel ports have llseek() instead of _llseek() */
285 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
286 #define TARGET_NR__llseek TARGET_NR_llseek
287 #endif
288
289 /* some platforms need to mask more bits than just TARGET_O_NONBLOCK */
290 #ifndef TARGET_O_NONBLOCK_MASK
291 #define TARGET_O_NONBLOCK_MASK TARGET_O_NONBLOCK
292 #endif
293
294 #define __NR_sys_gettid __NR_gettid
295 _syscall0(int, sys_gettid)
296
297 /* For the 64-bit guest on 32-bit host case we must emulate
298 * getdents using getdents64, because otherwise the host
299 * might hand us back more dirent records than we can fit
300 * into the guest buffer after structure format conversion.
301 * Otherwise we emulate getdents with getdents if the host has it.
302 */
303 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
304 #define EMULATE_GETDENTS_WITH_GETDENTS
305 #endif
306
307 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
308 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
309 #endif
310 #if (defined(TARGET_NR_getdents) && \
311 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
312 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
313 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
314 #endif
315 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
316 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
317 loff_t *, res, uint, wh);
318 #endif
319 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
320 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
321 siginfo_t *, uinfo)
322 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
323 #ifdef __NR_exit_group
324 _syscall1(int,exit_group,int,error_code)
325 #endif
326 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
327 _syscall1(int,set_tid_address,int *,tidptr)
328 #endif
329 #if defined(__NR_futex)
330 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
331 const struct timespec *,timeout,int *,uaddr2,int,val3)
332 #endif
333 #if defined(__NR_futex_time64)
334 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
335 const struct timespec *,timeout,int *,uaddr2,int,val3)
336 #endif
337 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
338 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
339 unsigned long *, user_mask_ptr);
340 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
341 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
342 unsigned long *, user_mask_ptr);
343 #define __NR_sys_getcpu __NR_getcpu
344 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
345 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
346 void *, arg);
347 _syscall2(int, capget, struct __user_cap_header_struct *, header,
348 struct __user_cap_data_struct *, data);
349 _syscall2(int, capset, struct __user_cap_header_struct *, header,
350 struct __user_cap_data_struct *, data);
351 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
352 _syscall2(int, ioprio_get, int, which, int, who)
353 #endif
354 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
355 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
356 #endif
357 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
358 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
359 #endif
360
361 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
362 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
363 unsigned long, idx1, unsigned long, idx2)
364 #endif
365
366 /*
367 * It is assumed that struct statx is architecture independent.
368 */
369 #if defined(TARGET_NR_statx) && defined(__NR_statx)
370 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
371 unsigned int, mask, struct target_statx *, statxbuf)
372 #endif
373 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
374 _syscall2(int, membarrier, int, cmd, int, flags)
375 #endif
376
377 static const bitmask_transtbl fcntl_flags_tbl[] = {
378 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
379 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
380 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
381 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
382 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
383 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
384 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
385 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
386 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
387 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
388 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
389 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
390 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
391 #if defined(O_DIRECT)
392 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
393 #endif
394 #if defined(O_NOATIME)
395 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
396 #endif
397 #if defined(O_CLOEXEC)
398 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
399 #endif
400 #if defined(O_PATH)
401 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
402 #endif
403 #if defined(O_TMPFILE)
404 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
405 #endif
406 /* Don't terminate the list prematurely on 64-bit host+guest. */
407 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
408 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
409 #endif
410 { 0, 0, 0, 0 }
411 };
412
413 _syscall2(int, sys_getcwd1, char *, buf, size_t, size)
414
415 #if defined(TARGET_NR_utimensat) || defined(TARGET_NR_utimensat_time64)
416 #if defined(__NR_utimensat)
417 #define __NR_sys_utimensat __NR_utimensat
418 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
419 const struct timespec *,tsp,int,flags)
420 #else
421 static int sys_utimensat(int dirfd, const char *pathname,
422 const struct timespec times[2], int flags)
423 {
424 errno = ENOSYS;
425 return -1;
426 }
427 #endif
428 #endif /* TARGET_NR_utimensat */
429
430 #ifdef TARGET_NR_renameat2
431 #if defined(__NR_renameat2)
432 #define __NR_sys_renameat2 __NR_renameat2
433 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
434 const char *, new, unsigned int, flags)
435 #else
436 static int sys_renameat2(int oldfd, const char *old,
437 int newfd, const char *new, int flags)
438 {
439 if (flags == 0) {
440 return renameat(oldfd, old, newfd, new);
441 }
442 errno = ENOSYS;
443 return -1;
444 }
445 #endif
446 #endif /* TARGET_NR_renameat2 */
447
448 #ifdef CONFIG_INOTIFY
449 #include <sys/inotify.h>
450
451 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
452 static int sys_inotify_init(void)
453 {
454 return (inotify_init());
455 }
456 #endif
457 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
458 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
459 {
460 return (inotify_add_watch(fd, pathname, mask));
461 }
462 #endif
463 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
464 static int sys_inotify_rm_watch(int fd, int32_t wd)
465 {
466 return (inotify_rm_watch(fd, wd));
467 }
468 #endif
469 #ifdef CONFIG_INOTIFY1
470 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
471 static int sys_inotify_init1(int flags)
472 {
473 return (inotify_init1(flags));
474 }
475 #endif
476 #endif
477 #else
478 /* Userspace can usually survive runtime without inotify */
479 #undef TARGET_NR_inotify_init
480 #undef TARGET_NR_inotify_init1
481 #undef TARGET_NR_inotify_add_watch
482 #undef TARGET_NR_inotify_rm_watch
483 #endif /* CONFIG_INOTIFY */
484
485 #if defined(TARGET_NR_prlimit64)
486 #ifndef __NR_prlimit64
487 # define __NR_prlimit64 -1
488 #endif
489 #define __NR_sys_prlimit64 __NR_prlimit64
490 /* The glibc rlimit structure may not be that used by the underlying syscall */
491 struct host_rlimit64 {
492 uint64_t rlim_cur;
493 uint64_t rlim_max;
494 };
495 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
496 const struct host_rlimit64 *, new_limit,
497 struct host_rlimit64 *, old_limit)
498 #endif
499
500
501 #if defined(TARGET_NR_timer_create)
502 /* Maximum of 32 active POSIX timers allowed at any one time. */
503 static timer_t g_posix_timers[32] = { 0, } ;
504
505 static inline int next_free_host_timer(void)
506 {
507 int k ;
508 /* FIXME: Does finding the next free slot require a lock? */
509 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
510 if (g_posix_timers[k] == 0) {
511 g_posix_timers[k] = (timer_t) 1;
512 return k;
513 }
514 }
515 return -1;
516 }
517 #endif
518
519 static inline int host_to_target_errno(int host_errno)
520 {
521 switch (host_errno) {
522 #define E(X) case X: return TARGET_##X;
523 #include "errnos.c.inc"
524 #undef E
525 default:
526 return host_errno;
527 }
528 }
529
530 static inline int target_to_host_errno(int target_errno)
531 {
532 switch (target_errno) {
533 #define E(X) case TARGET_##X: return X;
534 #include "errnos.c.inc"
535 #undef E
536 default:
537 return target_errno;
538 }
539 }
540
541 static inline abi_long get_errno(abi_long ret)
542 {
543 if (ret == -1)
544 return -host_to_target_errno(errno);
545 else
546 return ret;
547 }
548
549 const char *target_strerror(int err)
550 {
551 if (err == QEMU_ERESTARTSYS) {
552 return "To be restarted";
553 }
554 if (err == QEMU_ESIGRETURN) {
555 return "Successful exit from sigreturn";
556 }
557
558 return strerror(target_to_host_errno(err));
559 }
560
561 #define safe_syscall0(type, name) \
562 static type safe_##name(void) \
563 { \
564 return safe_syscall(__NR_##name); \
565 }
566
567 #define safe_syscall1(type, name, type1, arg1) \
568 static type safe_##name(type1 arg1) \
569 { \
570 return safe_syscall(__NR_##name, arg1); \
571 }
572
573 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
574 static type safe_##name(type1 arg1, type2 arg2) \
575 { \
576 return safe_syscall(__NR_##name, arg1, arg2); \
577 }
578
579 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
580 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
581 { \
582 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
583 }
584
585 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
586 type4, arg4) \
587 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
588 { \
589 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
590 }
591
592 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
593 type4, arg4, type5, arg5) \
594 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
595 type5 arg5) \
596 { \
597 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
598 }
599
600 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
601 type4, arg4, type5, arg5, type6, arg6) \
602 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
603 type5 arg5, type6 arg6) \
604 { \
605 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
606 }
607
608 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
609 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
610 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
611 int, flags, mode_t, mode)
612 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
613 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
614 struct rusage *, rusage)
615 #endif
616 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
617 int, options, struct rusage *, rusage)
618 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
619 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
620 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
621 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
622 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
623 #endif
624 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_ppoll_time64)
625 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
626 struct timespec *, tsp, const sigset_t *, sigmask,
627 size_t, sigsetsize)
628 #endif
629 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
630 int, maxevents, int, timeout, const sigset_t *, sigmask,
631 size_t, sigsetsize)
632 #if defined(__NR_futex)
633 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
634 const struct timespec *,timeout,int *,uaddr2,int,val3)
635 #endif
636 #if defined(__NR_futex_time64)
637 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \
638 const struct timespec *,timeout,int *,uaddr2,int,val3)
639 #endif
640 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
641 safe_syscall2(int, kill, pid_t, pid, int, sig)
642 safe_syscall2(int, tkill, int, tid, int, sig)
643 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
644 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
645 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
646 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
647 unsigned long, pos_l, unsigned long, pos_h)
648 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
649 unsigned long, pos_l, unsigned long, pos_h)
650 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
651 socklen_t, addrlen)
652 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
653 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
654 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
655 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
656 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
657 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
658 safe_syscall2(int, flock, int, fd, int, operation)
659 #if defined(TARGET_NR_rt_sigtimedwait) || defined(TARGET_NR_rt_sigtimedwait_time64)
660 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
661 const struct timespec *, uts, size_t, sigsetsize)
662 #endif
663 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
664 int, flags)
665 #if defined(TARGET_NR_nanosleep)
666 safe_syscall2(int, nanosleep, const struct timespec *, req,
667 struct timespec *, rem)
668 #endif
669 #if defined(TARGET_NR_clock_nanosleep) || \
670 defined(TARGET_NR_clock_nanosleep_time64)
671 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
672 const struct timespec *, req, struct timespec *, rem)
673 #endif
674 #ifdef __NR_ipc
675 #ifdef __s390x__
676 safe_syscall5(int, ipc, int, call, long, first, long, second, long, third,
677 void *, ptr)
678 #else
679 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
680 void *, ptr, long, fifth)
681 #endif
682 #endif
683 #ifdef __NR_msgsnd
684 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
685 int, flags)
686 #endif
687 #ifdef __NR_msgrcv
688 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
689 long, msgtype, int, flags)
690 #endif
691 #ifdef __NR_semtimedop
692 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
693 unsigned, nsops, const struct timespec *, timeout)
694 #endif
695 #if defined(TARGET_NR_mq_timedsend) || \
696 defined(TARGET_NR_mq_timedsend_time64)
697 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
698 size_t, len, unsigned, prio, const struct timespec *, timeout)
699 #endif
700 #if defined(TARGET_NR_mq_timedreceive) || \
701 defined(TARGET_NR_mq_timedreceive_time64)
702 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
703 size_t, len, unsigned *, prio, const struct timespec *, timeout)
704 #endif
705 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
706 safe_syscall6(ssize_t, copy_file_range, int, infd, loff_t *, pinoff,
707 int, outfd, loff_t *, poutoff, size_t, length,
708 unsigned int, flags)
709 #endif
710
711 /* We do ioctl like this rather than via safe_syscall3 to preserve the
712 * "third argument might be integer or pointer or not present" behaviour of
713 * the libc function.
714 */
715 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
716 /* Similarly for fcntl. Note that callers must always:
717 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
718 * use the flock64 struct rather than unsuffixed flock
719 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
720 */
721 #ifdef __NR_fcntl64
722 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
723 #else
724 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
725 #endif
726
727 static inline int host_to_target_sock_type(int host_type)
728 {
729 int target_type;
730
731 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
732 case SOCK_DGRAM:
733 target_type = TARGET_SOCK_DGRAM;
734 break;
735 case SOCK_STREAM:
736 target_type = TARGET_SOCK_STREAM;
737 break;
738 default:
739 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
740 break;
741 }
742
743 #if defined(SOCK_CLOEXEC)
744 if (host_type & SOCK_CLOEXEC) {
745 target_type |= TARGET_SOCK_CLOEXEC;
746 }
747 #endif
748
749 #if defined(SOCK_NONBLOCK)
750 if (host_type & SOCK_NONBLOCK) {
751 target_type |= TARGET_SOCK_NONBLOCK;
752 }
753 #endif
754
755 return target_type;
756 }
757
758 static abi_ulong target_brk;
759 static abi_ulong target_original_brk;
760 static abi_ulong brk_page;
761
762 void target_set_brk(abi_ulong new_brk)
763 {
764 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
765 brk_page = HOST_PAGE_ALIGN(target_brk);
766 }
767
768 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
769 #define DEBUGF_BRK(message, args...)
770
771 /* do_brk() must return target values and target errnos. */
772 abi_long do_brk(abi_ulong new_brk)
773 {
774 abi_long mapped_addr;
775 abi_ulong new_alloc_size;
776
777 /* brk pointers are always untagged */
778
779 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
780
781 if (!new_brk) {
782 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
783 return target_brk;
784 }
785 if (new_brk < target_original_brk) {
786 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
787 target_brk);
788 return target_brk;
789 }
790
791 /* If the new brk is less than the highest page reserved to the
792 * target heap allocation, set it and we're almost done... */
793 if (new_brk <= brk_page) {
794 /* Heap contents are initialized to zero, as for anonymous
795 * mapped pages. */
796 if (new_brk > target_brk) {
797 memset(g2h_untagged(target_brk), 0, new_brk - target_brk);
798 }
799 target_brk = new_brk;
800 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
801 return target_brk;
802 }
803
804 /* We need to allocate more memory after the brk... Note that
805 * we don't use MAP_FIXED because that will map over the top of
806 * any existing mapping (like the one with the host libc or qemu
807 * itself); instead we treat "mapped but at wrong address" as
808 * a failure and unmap again.
809 */
810 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
811 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
812 PROT_READ|PROT_WRITE,
813 MAP_ANON|MAP_PRIVATE, 0, 0));
814
815 if (mapped_addr == brk_page) {
816 /* Heap contents are initialized to zero, as for anonymous
817 * mapped pages. Technically the new pages are already
818 * initialized to zero since they *are* anonymous mapped
819 * pages, however we have to take care with the contents that
820 * come from the remaining part of the previous page: it may
821 * contains garbage data due to a previous heap usage (grown
822 * then shrunken). */
823 memset(g2h_untagged(target_brk), 0, brk_page - target_brk);
824
825 target_brk = new_brk;
826 brk_page = HOST_PAGE_ALIGN(target_brk);
827 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
828 target_brk);
829 return target_brk;
830 } else if (mapped_addr != -1) {
831 /* Mapped but at wrong address, meaning there wasn't actually
832 * enough space for this brk.
833 */
834 target_munmap(mapped_addr, new_alloc_size);
835 mapped_addr = -1;
836 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
837 }
838 else {
839 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
840 }
841
842 #if defined(TARGET_ALPHA)
843 /* We (partially) emulate OSF/1 on Alpha, which requires we
844 return a proper errno, not an unchanged brk value. */
845 return -TARGET_ENOMEM;
846 #endif
847 /* For everything else, return the previous break. */
848 return target_brk;
849 }
850
851 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
852 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
853 static inline abi_long copy_from_user_fdset(fd_set *fds,
854 abi_ulong target_fds_addr,
855 int n)
856 {
857 int i, nw, j, k;
858 abi_ulong b, *target_fds;
859
860 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
861 if (!(target_fds = lock_user(VERIFY_READ,
862 target_fds_addr,
863 sizeof(abi_ulong) * nw,
864 1)))
865 return -TARGET_EFAULT;
866
867 FD_ZERO(fds);
868 k = 0;
869 for (i = 0; i < nw; i++) {
870 /* grab the abi_ulong */
871 __get_user(b, &target_fds[i]);
872 for (j = 0; j < TARGET_ABI_BITS; j++) {
873 /* check the bit inside the abi_ulong */
874 if ((b >> j) & 1)
875 FD_SET(k, fds);
876 k++;
877 }
878 }
879
880 unlock_user(target_fds, target_fds_addr, 0);
881
882 return 0;
883 }
884
885 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
886 abi_ulong target_fds_addr,
887 int n)
888 {
889 if (target_fds_addr) {
890 if (copy_from_user_fdset(fds, target_fds_addr, n))
891 return -TARGET_EFAULT;
892 *fds_ptr = fds;
893 } else {
894 *fds_ptr = NULL;
895 }
896 return 0;
897 }
898
899 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
900 const fd_set *fds,
901 int n)
902 {
903 int i, nw, j, k;
904 abi_long v;
905 abi_ulong *target_fds;
906
907 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
908 if (!(target_fds = lock_user(VERIFY_WRITE,
909 target_fds_addr,
910 sizeof(abi_ulong) * nw,
911 0)))
912 return -TARGET_EFAULT;
913
914 k = 0;
915 for (i = 0; i < nw; i++) {
916 v = 0;
917 for (j = 0; j < TARGET_ABI_BITS; j++) {
918 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
919 k++;
920 }
921 __put_user(v, &target_fds[i]);
922 }
923
924 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
925
926 return 0;
927 }
928 #endif
929
930 #if defined(__alpha__)
931 #define HOST_HZ 1024
932 #else
933 #define HOST_HZ 100
934 #endif
935
936 static inline abi_long host_to_target_clock_t(long ticks)
937 {
938 #if HOST_HZ == TARGET_HZ
939 return ticks;
940 #else
941 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
942 #endif
943 }
944
945 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
946 const struct rusage *rusage)
947 {
948 struct target_rusage *target_rusage;
949
950 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
951 return -TARGET_EFAULT;
952 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
953 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
954 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
955 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
956 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
957 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
958 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
959 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
960 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
961 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
962 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
963 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
964 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
965 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
966 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
967 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
968 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
969 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
970 unlock_user_struct(target_rusage, target_addr, 1);
971
972 return 0;
973 }
974
975 #ifdef TARGET_NR_setrlimit
976 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
977 {
978 abi_ulong target_rlim_swap;
979 rlim_t result;
980
981 target_rlim_swap = tswapal(target_rlim);
982 if (target_rlim_swap == TARGET_RLIM_INFINITY)
983 return RLIM_INFINITY;
984
985 result = target_rlim_swap;
986 if (target_rlim_swap != (rlim_t)result)
987 return RLIM_INFINITY;
988
989 return result;
990 }
991 #endif
992
993 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
994 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
995 {
996 abi_ulong target_rlim_swap;
997 abi_ulong result;
998
999 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1000 target_rlim_swap = TARGET_RLIM_INFINITY;
1001 else
1002 target_rlim_swap = rlim;
1003 result = tswapal(target_rlim_swap);
1004
1005 return result;
1006 }
1007 #endif
1008
1009 static inline int target_to_host_resource(int code)
1010 {
1011 switch (code) {
1012 case TARGET_RLIMIT_AS:
1013 return RLIMIT_AS;
1014 case TARGET_RLIMIT_CORE:
1015 return RLIMIT_CORE;
1016 case TARGET_RLIMIT_CPU:
1017 return RLIMIT_CPU;
1018 case TARGET_RLIMIT_DATA:
1019 return RLIMIT_DATA;
1020 case TARGET_RLIMIT_FSIZE:
1021 return RLIMIT_FSIZE;
1022 case TARGET_RLIMIT_LOCKS:
1023 return RLIMIT_LOCKS;
1024 case TARGET_RLIMIT_MEMLOCK:
1025 return RLIMIT_MEMLOCK;
1026 case TARGET_RLIMIT_MSGQUEUE:
1027 return RLIMIT_MSGQUEUE;
1028 case TARGET_RLIMIT_NICE:
1029 return RLIMIT_NICE;
1030 case TARGET_RLIMIT_NOFILE:
1031 return RLIMIT_NOFILE;
1032 case TARGET_RLIMIT_NPROC:
1033 return RLIMIT_NPROC;
1034 case TARGET_RLIMIT_RSS:
1035 return RLIMIT_RSS;
1036 case TARGET_RLIMIT_RTPRIO:
1037 return RLIMIT_RTPRIO;
1038 case TARGET_RLIMIT_SIGPENDING:
1039 return RLIMIT_SIGPENDING;
1040 case TARGET_RLIMIT_STACK:
1041 return RLIMIT_STACK;
1042 default:
1043 return code;
1044 }
1045 }
1046
1047 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1048 abi_ulong target_tv_addr)
1049 {
1050 struct target_timeval *target_tv;
1051
1052 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1053 return -TARGET_EFAULT;
1054 }
1055
1056 __get_user(tv->tv_sec, &target_tv->tv_sec);
1057 __get_user(tv->tv_usec, &target_tv->tv_usec);
1058
1059 unlock_user_struct(target_tv, target_tv_addr, 0);
1060
1061 return 0;
1062 }
1063
1064 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1065 const struct timeval *tv)
1066 {
1067 struct target_timeval *target_tv;
1068
1069 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1070 return -TARGET_EFAULT;
1071 }
1072
1073 __put_user(tv->tv_sec, &target_tv->tv_sec);
1074 __put_user(tv->tv_usec, &target_tv->tv_usec);
1075
1076 unlock_user_struct(target_tv, target_tv_addr, 1);
1077
1078 return 0;
1079 }
1080
1081 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
1082 static inline abi_long copy_from_user_timeval64(struct timeval *tv,
1083 abi_ulong target_tv_addr)
1084 {
1085 struct target__kernel_sock_timeval *target_tv;
1086
1087 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1088 return -TARGET_EFAULT;
1089 }
1090
1091 __get_user(tv->tv_sec, &target_tv->tv_sec);
1092 __get_user(tv->tv_usec, &target_tv->tv_usec);
1093
1094 unlock_user_struct(target_tv, target_tv_addr, 0);
1095
1096 return 0;
1097 }
1098 #endif
1099
1100 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1101 const struct timeval *tv)
1102 {
1103 struct target__kernel_sock_timeval *target_tv;
1104
1105 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1106 return -TARGET_EFAULT;
1107 }
1108
1109 __put_user(tv->tv_sec, &target_tv->tv_sec);
1110 __put_user(tv->tv_usec, &target_tv->tv_usec);
1111
1112 unlock_user_struct(target_tv, target_tv_addr, 1);
1113
1114 return 0;
1115 }
1116
1117 #if defined(TARGET_NR_futex) || \
1118 defined(TARGET_NR_rt_sigtimedwait) || \
1119 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
1120 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
1121 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
1122 defined(TARGET_NR_mq_timedreceive) || defined(TARGET_NR_ipc) || \
1123 defined(TARGET_NR_semop) || defined(TARGET_NR_semtimedop) || \
1124 defined(TARGET_NR_timer_settime) || \
1125 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
1126 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1127 abi_ulong target_addr)
1128 {
1129 struct target_timespec *target_ts;
1130
1131 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1132 return -TARGET_EFAULT;
1133 }
1134 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1135 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1136 unlock_user_struct(target_ts, target_addr, 0);
1137 return 0;
1138 }
1139 #endif
1140
1141 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64) || \
1142 defined(TARGET_NR_timer_settime64) || \
1143 defined(TARGET_NR_mq_timedsend_time64) || \
1144 defined(TARGET_NR_mq_timedreceive_time64) || \
1145 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)) || \
1146 defined(TARGET_NR_clock_nanosleep_time64) || \
1147 defined(TARGET_NR_rt_sigtimedwait_time64) || \
1148 defined(TARGET_NR_utimensat) || \
1149 defined(TARGET_NR_utimensat_time64) || \
1150 defined(TARGET_NR_semtimedop_time64) || \
1151 defined(TARGET_NR_pselect6_time64) || defined(TARGET_NR_ppoll_time64)
1152 static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
1153 abi_ulong target_addr)
1154 {
1155 struct target__kernel_timespec *target_ts;
1156
1157 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1158 return -TARGET_EFAULT;
1159 }
1160 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1161 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1162 /* in 32bit mode, this drops the padding */
1163 host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec;
1164 unlock_user_struct(target_ts, target_addr, 0);
1165 return 0;
1166 }
1167 #endif
1168
1169 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1170 struct timespec *host_ts)
1171 {
1172 struct target_timespec *target_ts;
1173
1174 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1175 return -TARGET_EFAULT;
1176 }
1177 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1178 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1179 unlock_user_struct(target_ts, target_addr, 1);
1180 return 0;
1181 }
1182
1183 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1184 struct timespec *host_ts)
1185 {
1186 struct target__kernel_timespec *target_ts;
1187
1188 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1189 return -TARGET_EFAULT;
1190 }
1191 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1192 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1193 unlock_user_struct(target_ts, target_addr, 1);
1194 return 0;
1195 }
1196
1197 #if defined(TARGET_NR_gettimeofday)
1198 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
1199 struct timezone *tz)
1200 {
1201 struct target_timezone *target_tz;
1202
1203 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
1204 return -TARGET_EFAULT;
1205 }
1206
1207 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1208 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1209
1210 unlock_user_struct(target_tz, target_tz_addr, 1);
1211
1212 return 0;
1213 }
1214 #endif
1215
1216 #if defined(TARGET_NR_settimeofday)
1217 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1218 abi_ulong target_tz_addr)
1219 {
1220 struct target_timezone *target_tz;
1221
1222 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1223 return -TARGET_EFAULT;
1224 }
1225
1226 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1227 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1228
1229 unlock_user_struct(target_tz, target_tz_addr, 0);
1230
1231 return 0;
1232 }
1233 #endif
1234
1235 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1236 #include <mqueue.h>
1237
1238 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1239 abi_ulong target_mq_attr_addr)
1240 {
1241 struct target_mq_attr *target_mq_attr;
1242
1243 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1244 target_mq_attr_addr, 1))
1245 return -TARGET_EFAULT;
1246
1247 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1248 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1249 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1250 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1251
1252 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1253
1254 return 0;
1255 }
1256
1257 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1258 const struct mq_attr *attr)
1259 {
1260 struct target_mq_attr *target_mq_attr;
1261
1262 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1263 target_mq_attr_addr, 0))
1264 return -TARGET_EFAULT;
1265
1266 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1267 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1268 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1269 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1270
1271 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1272
1273 return 0;
1274 }
1275 #endif
1276
1277 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1278 /* do_select() must return target values and target errnos. */
1279 static abi_long do_select(int n,
1280 abi_ulong rfd_addr, abi_ulong wfd_addr,
1281 abi_ulong efd_addr, abi_ulong target_tv_addr)
1282 {
1283 fd_set rfds, wfds, efds;
1284 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1285 struct timeval tv;
1286 struct timespec ts, *ts_ptr;
1287 abi_long ret;
1288
1289 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1290 if (ret) {
1291 return ret;
1292 }
1293 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1294 if (ret) {
1295 return ret;
1296 }
1297 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1298 if (ret) {
1299 return ret;
1300 }
1301
1302 if (target_tv_addr) {
1303 if (copy_from_user_timeval(&tv, target_tv_addr))
1304 return -TARGET_EFAULT;
1305 ts.tv_sec = tv.tv_sec;
1306 ts.tv_nsec = tv.tv_usec * 1000;
1307 ts_ptr = &ts;
1308 } else {
1309 ts_ptr = NULL;
1310 }
1311
1312 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1313 ts_ptr, NULL));
1314
1315 if (!is_error(ret)) {
1316 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1317 return -TARGET_EFAULT;
1318 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1319 return -TARGET_EFAULT;
1320 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1321 return -TARGET_EFAULT;
1322
1323 if (target_tv_addr) {
1324 tv.tv_sec = ts.tv_sec;
1325 tv.tv_usec = ts.tv_nsec / 1000;
1326 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1327 return -TARGET_EFAULT;
1328 }
1329 }
1330 }
1331
1332 return ret;
1333 }
1334
1335 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1336 static abi_long do_old_select(abi_ulong arg1)
1337 {
1338 struct target_sel_arg_struct *sel;
1339 abi_ulong inp, outp, exp, tvp;
1340 long nsel;
1341
1342 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1343 return -TARGET_EFAULT;
1344 }
1345
1346 nsel = tswapal(sel->n);
1347 inp = tswapal(sel->inp);
1348 outp = tswapal(sel->outp);
1349 exp = tswapal(sel->exp);
1350 tvp = tswapal(sel->tvp);
1351
1352 unlock_user_struct(sel, arg1, 0);
1353
1354 return do_select(nsel, inp, outp, exp, tvp);
1355 }
1356 #endif
1357 #endif
1358
1359 #if defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6_time64)
1360 static abi_long do_pselect6(abi_long arg1, abi_long arg2, abi_long arg3,
1361 abi_long arg4, abi_long arg5, abi_long arg6,
1362 bool time64)
1363 {
1364 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
1365 fd_set rfds, wfds, efds;
1366 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1367 struct timespec ts, *ts_ptr;
1368 abi_long ret;
1369
1370 /*
1371 * The 6th arg is actually two args smashed together,
1372 * so we cannot use the C library.
1373 */
1374 sigset_t set;
1375 struct {
1376 sigset_t *set;
1377 size_t size;
1378 } sig, *sig_ptr;
1379
1380 abi_ulong arg_sigset, arg_sigsize, *arg7;
1381 target_sigset_t *target_sigset;
1382
1383 n = arg1;
1384 rfd_addr = arg2;
1385 wfd_addr = arg3;
1386 efd_addr = arg4;
1387 ts_addr = arg5;
1388
1389 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1390 if (ret) {
1391 return ret;
1392 }
1393 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1394 if (ret) {
1395 return ret;
1396 }
1397 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1398 if (ret) {
1399 return ret;
1400 }
1401
1402 /*
1403 * This takes a timespec, and not a timeval, so we cannot
1404 * use the do_select() helper ...
1405 */
1406 if (ts_addr) {
1407 if (time64) {
1408 if (target_to_host_timespec64(&ts, ts_addr)) {
1409 return -TARGET_EFAULT;
1410 }
1411 } else {
1412 if (target_to_host_timespec(&ts, ts_addr)) {
1413 return -TARGET_EFAULT;
1414 }
1415 }
1416 ts_ptr = &ts;
1417 } else {
1418 ts_ptr = NULL;
1419 }
1420
1421 /* Extract the two packed args for the sigset */
1422 if (arg6) {
1423 sig_ptr = &sig;
1424 sig.size = SIGSET_T_SIZE;
1425
1426 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
1427 if (!arg7) {
1428 return -TARGET_EFAULT;
1429 }
1430 arg_sigset = tswapal(arg7[0]);
1431 arg_sigsize = tswapal(arg7[1]);
1432 unlock_user(arg7, arg6, 0);
1433
1434 if (arg_sigset) {
1435 sig.set = &set;
1436 if (arg_sigsize != sizeof(*target_sigset)) {
1437 /* Like the kernel, we enforce correct size sigsets */
1438 return -TARGET_EINVAL;
1439 }
1440 target_sigset = lock_user(VERIFY_READ, arg_sigset,
1441 sizeof(*target_sigset), 1);
1442 if (!target_sigset) {
1443 return -TARGET_EFAULT;
1444 }
1445 target_to_host_sigset(&set, target_sigset);
1446 unlock_user(target_sigset, arg_sigset, 0);
1447 } else {
1448 sig.set = NULL;
1449 }
1450 } else {
1451 sig_ptr = NULL;
1452 }
1453
1454 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1455 ts_ptr, sig_ptr));
1456
1457 if (!is_error(ret)) {
1458 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) {
1459 return -TARGET_EFAULT;
1460 }
1461 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) {
1462 return -TARGET_EFAULT;
1463 }
1464 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) {
1465 return -TARGET_EFAULT;
1466 }
1467 if (time64) {
1468 if (ts_addr && host_to_target_timespec64(ts_addr, &ts)) {
1469 return -TARGET_EFAULT;
1470 }
1471 } else {
1472 if (ts_addr && host_to_target_timespec(ts_addr, &ts)) {
1473 return -TARGET_EFAULT;
1474 }
1475 }
1476 }
1477 return ret;
1478 }
1479 #endif
1480
1481 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) || \
1482 defined(TARGET_NR_ppoll_time64)
1483 static abi_long do_ppoll(abi_long arg1, abi_long arg2, abi_long arg3,
1484 abi_long arg4, abi_long arg5, bool ppoll, bool time64)
1485 {
1486 struct target_pollfd *target_pfd;
1487 unsigned int nfds = arg2;
1488 struct pollfd *pfd;
1489 unsigned int i;
1490 abi_long ret;
1491
1492 pfd = NULL;
1493 target_pfd = NULL;
1494 if (nfds) {
1495 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
1496 return -TARGET_EINVAL;
1497 }
1498 target_pfd = lock_user(VERIFY_WRITE, arg1,
1499 sizeof(struct target_pollfd) * nfds, 1);
1500 if (!target_pfd) {
1501 return -TARGET_EFAULT;
1502 }
1503
1504 pfd = alloca(sizeof(struct pollfd) * nfds);
1505 for (i = 0; i < nfds; i++) {
1506 pfd[i].fd = tswap32(target_pfd[i].fd);
1507 pfd[i].events = tswap16(target_pfd[i].events);
1508 }
1509 }
1510 if (ppoll) {
1511 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
1512 target_sigset_t *target_set;
1513 sigset_t _set, *set = &_set;
1514
1515 if (arg3) {
1516 if (time64) {
1517 if (target_to_host_timespec64(timeout_ts, arg3)) {
1518 unlock_user(target_pfd, arg1, 0);
1519 return -TARGET_EFAULT;
1520 }
1521 } else {
1522 if (target_to_host_timespec(timeout_ts, arg3)) {
1523 unlock_user(target_pfd, arg1, 0);
1524 return -TARGET_EFAULT;
1525 }
1526 }
1527 } else {
1528 timeout_ts = NULL;
1529 }
1530
1531 if (arg4) {
1532 if (arg5 != sizeof(target_sigset_t)) {
1533 unlock_user(target_pfd, arg1, 0);
1534 return -TARGET_EINVAL;
1535 }
1536
1537 target_set = lock_user(VERIFY_READ, arg4,
1538 sizeof(target_sigset_t), 1);
1539 if (!target_set) {
1540 unlock_user(target_pfd, arg1, 0);
1541 return -TARGET_EFAULT;
1542 }
1543 target_to_host_sigset(set, target_set);
1544 } else {
1545 set = NULL;
1546 }
1547
1548 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
1549 set, SIGSET_T_SIZE));
1550
1551 if (!is_error(ret) && arg3) {
1552 if (time64) {
1553 if (host_to_target_timespec64(arg3, timeout_ts)) {
1554 return -TARGET_EFAULT;
1555 }
1556 } else {
1557 if (host_to_target_timespec(arg3, timeout_ts)) {
1558 return -TARGET_EFAULT;
1559 }
1560 }
1561 }
1562 if (arg4) {
1563 unlock_user(target_set, arg4, 0);
1564 }
1565 } else {
1566 struct timespec ts, *pts;
1567
1568 if (arg3 >= 0) {
1569 /* Convert ms to secs, ns */
1570 ts.tv_sec = arg3 / 1000;
1571 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
1572 pts = &ts;
1573 } else {
1574 /* -ve poll() timeout means "infinite" */
1575 pts = NULL;
1576 }
1577 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
1578 }
1579
1580 if (!is_error(ret)) {
1581 for (i = 0; i < nfds; i++) {
1582 target_pfd[i].revents = tswap16(pfd[i].revents);
1583 }
1584 }
1585 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
1586 return ret;
1587 }
1588 #endif
1589
1590 static abi_long do_pipe2(int host_pipe[], int flags)
1591 {
1592 #ifdef CONFIG_PIPE2
1593 return pipe2(host_pipe, flags);
1594 #else
1595 return -ENOSYS;
1596 #endif
1597 }
1598
1599 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1600 int flags, int is_pipe2)
1601 {
1602 int host_pipe[2];
1603 abi_long ret;
1604 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1605
1606 if (is_error(ret))
1607 return get_errno(ret);
1608
1609 /* Several targets have special calling conventions for the original
1610 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1611 if (!is_pipe2) {
1612 #if defined(TARGET_ALPHA)
1613 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1614 return host_pipe[0];
1615 #elif defined(TARGET_MIPS)
1616 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1617 return host_pipe[0];
1618 #elif defined(TARGET_SH4)
1619 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1620 return host_pipe[0];
1621 #elif defined(TARGET_SPARC)
1622 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1623 return host_pipe[0];
1624 #endif
1625 }
1626
1627 if (put_user_s32(host_pipe[0], pipedes)
1628 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1629 return -TARGET_EFAULT;
1630 return get_errno(ret);
1631 }
1632
1633 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1634 abi_ulong target_addr,
1635 socklen_t len)
1636 {
1637 struct target_ip_mreqn *target_smreqn;
1638
1639 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1640 if (!target_smreqn)
1641 return -TARGET_EFAULT;
1642 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1643 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1644 if (len == sizeof(struct target_ip_mreqn))
1645 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1646 unlock_user(target_smreqn, target_addr, 0);
1647
1648 return 0;
1649 }
1650
1651 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1652 abi_ulong target_addr,
1653 socklen_t len)
1654 {
1655 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1656 sa_family_t sa_family;
1657 struct target_sockaddr *target_saddr;
1658
1659 if (fd_trans_target_to_host_addr(fd)) {
1660 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1661 }
1662
1663 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1664 if (!target_saddr)
1665 return -TARGET_EFAULT;
1666
1667 sa_family = tswap16(target_saddr->sa_family);
1668
1669 /* Oops. The caller might send a incomplete sun_path; sun_path
1670 * must be terminated by \0 (see the manual page), but
1671 * unfortunately it is quite common to specify sockaddr_un
1672 * length as "strlen(x->sun_path)" while it should be
1673 * "strlen(...) + 1". We'll fix that here if needed.
1674 * Linux kernel has a similar feature.
1675 */
1676
1677 if (sa_family == AF_UNIX) {
1678 if (len < unix_maxlen && len > 0) {
1679 char *cp = (char*)target_saddr;
1680
1681 if ( cp[len-1] && !cp[len] )
1682 len++;
1683 }
1684 if (len > unix_maxlen)
1685 len = unix_maxlen;
1686 }
1687
1688 memcpy(addr, target_saddr, len);
1689 addr->sa_family = sa_family;
1690 if (sa_family == AF_NETLINK) {
1691 struct sockaddr_nl *nladdr;
1692
1693 nladdr = (struct sockaddr_nl *)addr;
1694 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1695 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1696 } else if (sa_family == AF_PACKET) {
1697 struct target_sockaddr_ll *lladdr;
1698
1699 lladdr = (struct target_sockaddr_ll *)addr;
1700 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1701 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1702 }
1703 unlock_user(target_saddr, target_addr, 0);
1704
1705 return 0;
1706 }
1707
1708 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1709 struct sockaddr *addr,
1710 socklen_t len)
1711 {
1712 struct target_sockaddr *target_saddr;
1713
1714 if (len == 0) {
1715 return 0;
1716 }
1717 assert(addr);
1718
1719 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1720 if (!target_saddr)
1721 return -TARGET_EFAULT;
1722 memcpy(target_saddr, addr, len);
1723 if (len >= offsetof(struct target_sockaddr, sa_family) +
1724 sizeof(target_saddr->sa_family)) {
1725 target_saddr->sa_family = tswap16(addr->sa_family);
1726 }
1727 if (addr->sa_family == AF_NETLINK &&
1728 len >= sizeof(struct target_sockaddr_nl)) {
1729 struct target_sockaddr_nl *target_nl =
1730 (struct target_sockaddr_nl *)target_saddr;
1731 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1732 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1733 } else if (addr->sa_family == AF_PACKET) {
1734 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1735 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1736 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1737 } else if (addr->sa_family == AF_INET6 &&
1738 len >= sizeof(struct target_sockaddr_in6)) {
1739 struct target_sockaddr_in6 *target_in6 =
1740 (struct target_sockaddr_in6 *)target_saddr;
1741 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1742 }
1743 unlock_user(target_saddr, target_addr, len);
1744
1745 return 0;
1746 }
1747
1748 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1749 struct target_msghdr *target_msgh)
1750 {
1751 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1752 abi_long msg_controllen;
1753 abi_ulong target_cmsg_addr;
1754 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1755 socklen_t space = 0;
1756
1757 msg_controllen = tswapal(target_msgh->msg_controllen);
1758 if (msg_controllen < sizeof (struct target_cmsghdr))
1759 goto the_end;
1760 target_cmsg_addr = tswapal(target_msgh->msg_control);
1761 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1762 target_cmsg_start = target_cmsg;
1763 if (!target_cmsg)
1764 return -TARGET_EFAULT;
1765
1766 while (cmsg && target_cmsg) {
1767 void *data = CMSG_DATA(cmsg);
1768 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1769
1770 int len = tswapal(target_cmsg->cmsg_len)
1771 - sizeof(struct target_cmsghdr);
1772
1773 space += CMSG_SPACE(len);
1774 if (space > msgh->msg_controllen) {
1775 space -= CMSG_SPACE(len);
1776 /* This is a QEMU bug, since we allocated the payload
1777 * area ourselves (unlike overflow in host-to-target
1778 * conversion, which is just the guest giving us a buffer
1779 * that's too small). It can't happen for the payload types
1780 * we currently support; if it becomes an issue in future
1781 * we would need to improve our allocation strategy to
1782 * something more intelligent than "twice the size of the
1783 * target buffer we're reading from".
1784 */
1785 qemu_log_mask(LOG_UNIMP,
1786 ("Unsupported ancillary data %d/%d: "
1787 "unhandled msg size\n"),
1788 tswap32(target_cmsg->cmsg_level),
1789 tswap32(target_cmsg->cmsg_type));
1790 break;
1791 }
1792
1793 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1794 cmsg->cmsg_level = SOL_SOCKET;
1795 } else {
1796 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1797 }
1798 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1799 cmsg->cmsg_len = CMSG_LEN(len);
1800
1801 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1802 int *fd = (int *)data;
1803 int *target_fd = (int *)target_data;
1804 int i, numfds = len / sizeof(int);
1805
1806 for (i = 0; i < numfds; i++) {
1807 __get_user(fd[i], target_fd + i);
1808 }
1809 } else if (cmsg->cmsg_level == SOL_SOCKET
1810 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1811 struct ucred *cred = (struct ucred *)data;
1812 struct target_ucred *target_cred =
1813 (struct target_ucred *)target_data;
1814
1815 __get_user(cred->pid, &target_cred->pid);
1816 __get_user(cred->uid, &target_cred->uid);
1817 __get_user(cred->gid, &target_cred->gid);
1818 } else {
1819 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1820 cmsg->cmsg_level, cmsg->cmsg_type);
1821 memcpy(data, target_data, len);
1822 }
1823
1824 cmsg = CMSG_NXTHDR(msgh, cmsg);
1825 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1826 target_cmsg_start);
1827 }
1828 unlock_user(target_cmsg, target_cmsg_addr, 0);
1829 the_end:
1830 msgh->msg_controllen = space;
1831 return 0;
1832 }
1833
1834 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1835 struct msghdr *msgh)
1836 {
1837 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1838 abi_long msg_controllen;
1839 abi_ulong target_cmsg_addr;
1840 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1841 socklen_t space = 0;
1842
1843 msg_controllen = tswapal(target_msgh->msg_controllen);
1844 if (msg_controllen < sizeof (struct target_cmsghdr))
1845 goto the_end;
1846 target_cmsg_addr = tswapal(target_msgh->msg_control);
1847 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1848 target_cmsg_start = target_cmsg;
1849 if (!target_cmsg)
1850 return -TARGET_EFAULT;
1851
1852 while (cmsg && target_cmsg) {
1853 void *data = CMSG_DATA(cmsg);
1854 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1855
1856 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1857 int tgt_len, tgt_space;
1858
1859 /* We never copy a half-header but may copy half-data;
1860 * this is Linux's behaviour in put_cmsg(). Note that
1861 * truncation here is a guest problem (which we report
1862 * to the guest via the CTRUNC bit), unlike truncation
1863 * in target_to_host_cmsg, which is a QEMU bug.
1864 */
1865 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1866 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1867 break;
1868 }
1869
1870 if (cmsg->cmsg_level == SOL_SOCKET) {
1871 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1872 } else {
1873 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1874 }
1875 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1876
1877 /* Payload types which need a different size of payload on
1878 * the target must adjust tgt_len here.
1879 */
1880 tgt_len = len;
1881 switch (cmsg->cmsg_level) {
1882 case SOL_SOCKET:
1883 switch (cmsg->cmsg_type) {
1884 case SO_TIMESTAMP:
1885 tgt_len = sizeof(struct target_timeval);
1886 break;
1887 default:
1888 break;
1889 }
1890 break;
1891 default:
1892 break;
1893 }
1894
1895 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1896 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1897 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1898 }
1899
1900 /* We must now copy-and-convert len bytes of payload
1901 * into tgt_len bytes of destination space. Bear in mind
1902 * that in both source and destination we may be dealing
1903 * with a truncated value!
1904 */
1905 switch (cmsg->cmsg_level) {
1906 case SOL_SOCKET:
1907 switch (cmsg->cmsg_type) {
1908 case SCM_RIGHTS:
1909 {
1910 int *fd = (int *)data;
1911 int *target_fd = (int *)target_data;
1912 int i, numfds = tgt_len / sizeof(int);
1913
1914 for (i = 0; i < numfds; i++) {
1915 __put_user(fd[i], target_fd + i);
1916 }
1917 break;
1918 }
1919 case SO_TIMESTAMP:
1920 {
1921 struct timeval *tv = (struct timeval *)data;
1922 struct target_timeval *target_tv =
1923 (struct target_timeval *)target_data;
1924
1925 if (len != sizeof(struct timeval) ||
1926 tgt_len != sizeof(struct target_timeval)) {
1927 goto unimplemented;
1928 }
1929
1930 /* copy struct timeval to target */
1931 __put_user(tv->tv_sec, &target_tv->tv_sec);
1932 __put_user(tv->tv_usec, &target_tv->tv_usec);
1933 break;
1934 }
1935 case SCM_CREDENTIALS:
1936 {
1937 struct ucred *cred = (struct ucred *)data;
1938 struct target_ucred *target_cred =
1939 (struct target_ucred *)target_data;
1940
1941 __put_user(cred->pid, &target_cred->pid);
1942 __put_user(cred->uid, &target_cred->uid);
1943 __put_user(cred->gid, &target_cred->gid);
1944 break;
1945 }
1946 default:
1947 goto unimplemented;
1948 }
1949 break;
1950
1951 case SOL_IP:
1952 switch (cmsg->cmsg_type) {
1953 case IP_TTL:
1954 {
1955 uint32_t *v = (uint32_t *)data;
1956 uint32_t *t_int = (uint32_t *)target_data;
1957
1958 if (len != sizeof(uint32_t) ||
1959 tgt_len != sizeof(uint32_t)) {
1960 goto unimplemented;
1961 }
1962 __put_user(*v, t_int);
1963 break;
1964 }
1965 case IP_RECVERR:
1966 {
1967 struct errhdr_t {
1968 struct sock_extended_err ee;
1969 struct sockaddr_in offender;
1970 };
1971 struct errhdr_t *errh = (struct errhdr_t *)data;
1972 struct errhdr_t *target_errh =
1973 (struct errhdr_t *)target_data;
1974
1975 if (len != sizeof(struct errhdr_t) ||
1976 tgt_len != sizeof(struct errhdr_t)) {
1977 goto unimplemented;
1978 }
1979 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1980 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1981 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1982 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1983 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1984 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1985 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1986 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1987 (void *) &errh->offender, sizeof(errh->offender));
1988 break;
1989 }
1990 default:
1991 goto unimplemented;
1992 }
1993 break;
1994
1995 case SOL_IPV6:
1996 switch (cmsg->cmsg_type) {
1997 case IPV6_HOPLIMIT:
1998 {
1999 uint32_t *v = (uint32_t *)data;
2000 uint32_t *t_int = (uint32_t *)target_data;
2001
2002 if (len != sizeof(uint32_t) ||
2003 tgt_len != sizeof(uint32_t)) {
2004 goto unimplemented;
2005 }
2006 __put_user(*v, t_int);
2007 break;
2008 }
2009 case IPV6_RECVERR:
2010 {
2011 struct errhdr6_t {
2012 struct sock_extended_err ee;
2013 struct sockaddr_in6 offender;
2014 };
2015 struct errhdr6_t *errh = (struct errhdr6_t *)data;
2016 struct errhdr6_t *target_errh =
2017 (struct errhdr6_t *)target_data;
2018
2019 if (len != sizeof(struct errhdr6_t) ||
2020 tgt_len != sizeof(struct errhdr6_t)) {
2021 goto unimplemented;
2022 }
2023 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
2024 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
2025 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
2026 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
2027 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
2028 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
2029 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
2030 host_to_target_sockaddr((unsigned long) &target_errh->offender,
2031 (void *) &errh->offender, sizeof(errh->offender));
2032 break;
2033 }
2034 default:
2035 goto unimplemented;
2036 }
2037 break;
2038
2039 default:
2040 unimplemented:
2041 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
2042 cmsg->cmsg_level, cmsg->cmsg_type);
2043 memcpy(target_data, data, MIN(len, tgt_len));
2044 if (tgt_len > len) {
2045 memset(target_data + len, 0, tgt_len - len);
2046 }
2047 }
2048
2049 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
2050 tgt_space = TARGET_CMSG_SPACE(tgt_len);
2051 if (msg_controllen < tgt_space) {
2052 tgt_space = msg_controllen;
2053 }
2054 msg_controllen -= tgt_space;
2055 space += tgt_space;
2056 cmsg = CMSG_NXTHDR(msgh, cmsg);
2057 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
2058 target_cmsg_start);
2059 }
2060 unlock_user(target_cmsg, target_cmsg_addr, space);
2061 the_end:
2062 target_msgh->msg_controllen = tswapal(space);
2063 return 0;
2064 }
2065
2066 /* do_setsockopt() Must return target values and target errnos. */
2067 static abi_long do_setsockopt(int sockfd, int level, int optname,
2068 abi_ulong optval_addr, socklen_t optlen)
2069 {
2070 abi_long ret;
2071 int val;
2072 struct ip_mreqn *ip_mreq;
2073 struct ip_mreq_source *ip_mreq_source;
2074
2075 switch(level) {
2076 case SOL_TCP:
2077 case SOL_UDP:
2078 /* TCP and UDP options all take an 'int' value. */
2079 if (optlen < sizeof(uint32_t))
2080 return -TARGET_EINVAL;
2081
2082 if (get_user_u32(val, optval_addr))
2083 return -TARGET_EFAULT;
2084 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2085 break;
2086 case SOL_IP:
2087 switch(optname) {
2088 case IP_TOS:
2089 case IP_TTL:
2090 case IP_HDRINCL:
2091 case IP_ROUTER_ALERT:
2092 case IP_RECVOPTS:
2093 case IP_RETOPTS:
2094 case IP_PKTINFO:
2095 case IP_MTU_DISCOVER:
2096 case IP_RECVERR:
2097 case IP_RECVTTL:
2098 case IP_RECVTOS:
2099 #ifdef IP_FREEBIND
2100 case IP_FREEBIND:
2101 #endif
2102 case IP_MULTICAST_TTL:
2103 case IP_MULTICAST_LOOP:
2104 val = 0;
2105 if (optlen >= sizeof(uint32_t)) {
2106 if (get_user_u32(val, optval_addr))
2107 return -TARGET_EFAULT;
2108 } else if (optlen >= 1) {
2109 if (get_user_u8(val, optval_addr))
2110 return -TARGET_EFAULT;
2111 }
2112 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
2113 break;
2114 case IP_ADD_MEMBERSHIP:
2115 case IP_DROP_MEMBERSHIP:
2116 if (optlen < sizeof (struct target_ip_mreq) ||
2117 optlen > sizeof (struct target_ip_mreqn))
2118 return -TARGET_EINVAL;
2119
2120 ip_mreq = (struct ip_mreqn *) alloca(optlen);
2121 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
2122 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
2123 break;
2124
2125 case IP_BLOCK_SOURCE:
2126 case IP_UNBLOCK_SOURCE:
2127 case IP_ADD_SOURCE_MEMBERSHIP:
2128 case IP_DROP_SOURCE_MEMBERSHIP:
2129 if (optlen != sizeof (struct target_ip_mreq_source))
2130 return -TARGET_EINVAL;
2131
2132 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2133 if (!ip_mreq_source) {
2134 return -TARGET_EFAULT;
2135 }
2136 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
2137 unlock_user (ip_mreq_source, optval_addr, 0);
2138 break;
2139
2140 default:
2141 goto unimplemented;
2142 }
2143 break;
2144 case SOL_IPV6:
2145 switch (optname) {
2146 case IPV6_MTU_DISCOVER:
2147 case IPV6_MTU:
2148 case IPV6_V6ONLY:
2149 case IPV6_RECVPKTINFO:
2150 case IPV6_UNICAST_HOPS:
2151 case IPV6_MULTICAST_HOPS:
2152 case IPV6_MULTICAST_LOOP:
2153 case IPV6_RECVERR:
2154 case IPV6_RECVHOPLIMIT:
2155 case IPV6_2292HOPLIMIT:
2156 case IPV6_CHECKSUM:
2157 case IPV6_ADDRFORM:
2158 case IPV6_2292PKTINFO:
2159 case IPV6_RECVTCLASS:
2160 case IPV6_RECVRTHDR:
2161 case IPV6_2292RTHDR:
2162 case IPV6_RECVHOPOPTS:
2163 case IPV6_2292HOPOPTS:
2164 case IPV6_RECVDSTOPTS:
2165 case IPV6_2292DSTOPTS:
2166 case IPV6_TCLASS:
2167 case IPV6_ADDR_PREFERENCES:
2168 #ifdef IPV6_RECVPATHMTU
2169 case IPV6_RECVPATHMTU:
2170 #endif
2171 #ifdef IPV6_TRANSPARENT
2172 case IPV6_TRANSPARENT:
2173 #endif
2174 #ifdef IPV6_FREEBIND
2175 case IPV6_FREEBIND:
2176 #endif
2177 #ifdef IPV6_RECVORIGDSTADDR
2178 case IPV6_RECVORIGDSTADDR:
2179 #endif
2180 val = 0;
2181 if (optlen < sizeof(uint32_t)) {
2182 return -TARGET_EINVAL;
2183 }
2184 if (get_user_u32(val, optval_addr)) {
2185 return -TARGET_EFAULT;
2186 }
2187 ret = get_errno(setsockopt(sockfd, level, optname,
2188 &val, sizeof(val)));
2189 break;
2190 case IPV6_PKTINFO:
2191 {
2192 struct in6_pktinfo pki;
2193
2194 if (optlen < sizeof(pki)) {
2195 return -TARGET_EINVAL;
2196 }
2197
2198 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2199 return -TARGET_EFAULT;
2200 }
2201
2202 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2203
2204 ret = get_errno(setsockopt(sockfd, level, optname,
2205 &pki, sizeof(pki)));
2206 break;
2207 }
2208 case IPV6_ADD_MEMBERSHIP:
2209 case IPV6_DROP_MEMBERSHIP:
2210 {
2211 struct ipv6_mreq ipv6mreq;
2212
2213 if (optlen < sizeof(ipv6mreq)) {
2214 return -TARGET_EINVAL;
2215 }
2216
2217 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
2218 return -TARGET_EFAULT;
2219 }
2220
2221 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
2222
2223 ret = get_errno(setsockopt(sockfd, level, optname,
2224 &ipv6mreq, sizeof(ipv6mreq)));
2225 break;
2226 }
2227 default:
2228 goto unimplemented;
2229 }
2230 break;
2231 case SOL_ICMPV6:
2232 switch (optname) {
2233 case ICMPV6_FILTER:
2234 {
2235 struct icmp6_filter icmp6f;
2236
2237 if (optlen > sizeof(icmp6f)) {
2238 optlen = sizeof(icmp6f);
2239 }
2240
2241 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2242 return -TARGET_EFAULT;
2243 }
2244
2245 for (val = 0; val < 8; val++) {
2246 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2247 }
2248
2249 ret = get_errno(setsockopt(sockfd, level, optname,
2250 &icmp6f, optlen));
2251 break;
2252 }
2253 default:
2254 goto unimplemented;
2255 }
2256 break;
2257 case SOL_RAW:
2258 switch (optname) {
2259 case ICMP_FILTER:
2260 case IPV6_CHECKSUM:
2261 /* those take an u32 value */
2262 if (optlen < sizeof(uint32_t)) {
2263 return -TARGET_EINVAL;
2264 }
2265
2266 if (get_user_u32(val, optval_addr)) {
2267 return -TARGET_EFAULT;
2268 }
2269 ret = get_errno(setsockopt(sockfd, level, optname,
2270 &val, sizeof(val)));
2271 break;
2272
2273 default:
2274 goto unimplemented;
2275 }
2276 break;
2277 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2278 case SOL_ALG:
2279 switch (optname) {
2280 case ALG_SET_KEY:
2281 {
2282 char *alg_key = g_malloc(optlen);
2283
2284 if (!alg_key) {
2285 return -TARGET_ENOMEM;
2286 }
2287 if (copy_from_user(alg_key, optval_addr, optlen)) {
2288 g_free(alg_key);
2289 return -TARGET_EFAULT;
2290 }
2291 ret = get_errno(setsockopt(sockfd, level, optname,
2292 alg_key, optlen));
2293 g_free(alg_key);
2294 break;
2295 }
2296 case ALG_SET_AEAD_AUTHSIZE:
2297 {
2298 ret = get_errno(setsockopt(sockfd, level, optname,
2299 NULL, optlen));
2300 break;
2301 }
2302 default:
2303 goto unimplemented;
2304 }
2305 break;
2306 #endif
2307 case TARGET_SOL_SOCKET:
2308 switch (optname) {
2309 case TARGET_SO_RCVTIMEO:
2310 {
2311 struct timeval tv;
2312
2313 optname = SO_RCVTIMEO;
2314
2315 set_timeout:
2316 if (optlen != sizeof(struct target_timeval)) {
2317 return -TARGET_EINVAL;
2318 }
2319
2320 if (copy_from_user_timeval(&tv, optval_addr)) {
2321 return -TARGET_EFAULT;
2322 }
2323
2324 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2325 &tv, sizeof(tv)));
2326 return ret;
2327 }
2328 case TARGET_SO_SNDTIMEO:
2329 optname = SO_SNDTIMEO;
2330 goto set_timeout;
2331 case TARGET_SO_ATTACH_FILTER:
2332 {
2333 struct target_sock_fprog *tfprog;
2334 struct target_sock_filter *tfilter;
2335 struct sock_fprog fprog;
2336 struct sock_filter *filter;
2337 int i;
2338
2339 if (optlen != sizeof(*tfprog)) {
2340 return -TARGET_EINVAL;
2341 }
2342 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2343 return -TARGET_EFAULT;
2344 }
2345 if (!lock_user_struct(VERIFY_READ, tfilter,
2346 tswapal(tfprog->filter), 0)) {
2347 unlock_user_struct(tfprog, optval_addr, 1);
2348 return -TARGET_EFAULT;
2349 }
2350
2351 fprog.len = tswap16(tfprog->len);
2352 filter = g_try_new(struct sock_filter, fprog.len);
2353 if (filter == NULL) {
2354 unlock_user_struct(tfilter, tfprog->filter, 1);
2355 unlock_user_struct(tfprog, optval_addr, 1);
2356 return -TARGET_ENOMEM;
2357 }
2358 for (i = 0; i < fprog.len; i++) {
2359 filter[i].code = tswap16(tfilter[i].code);
2360 filter[i].jt = tfilter[i].jt;
2361 filter[i].jf = tfilter[i].jf;
2362 filter[i].k = tswap32(tfilter[i].k);
2363 }
2364 fprog.filter = filter;
2365
2366 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2367 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2368 g_free(filter);
2369
2370 unlock_user_struct(tfilter, tfprog->filter, 1);
2371 unlock_user_struct(tfprog, optval_addr, 1);
2372 return ret;
2373 }
2374 case TARGET_SO_BINDTODEVICE:
2375 {
2376 char *dev_ifname, *addr_ifname;
2377
2378 if (optlen > IFNAMSIZ - 1) {
2379 optlen = IFNAMSIZ - 1;
2380 }
2381 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2382 if (!dev_ifname) {
2383 return -TARGET_EFAULT;
2384 }
2385 optname = SO_BINDTODEVICE;
2386 addr_ifname = alloca(IFNAMSIZ);
2387 memcpy(addr_ifname, dev_ifname, optlen);
2388 addr_ifname[optlen] = 0;
2389 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2390 addr_ifname, optlen));
2391 unlock_user (dev_ifname, optval_addr, 0);
2392 return ret;
2393 }
2394 case TARGET_SO_LINGER:
2395 {
2396 struct linger lg;
2397 struct target_linger *tlg;
2398
2399 if (optlen != sizeof(struct target_linger)) {
2400 return -TARGET_EINVAL;
2401 }
2402 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2403 return -TARGET_EFAULT;
2404 }
2405 __get_user(lg.l_onoff, &tlg->l_onoff);
2406 __get_user(lg.l_linger, &tlg->l_linger);
2407 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2408 &lg, sizeof(lg)));
2409 unlock_user_struct(tlg, optval_addr, 0);
2410 return ret;
2411 }
2412 /* Options with 'int' argument. */
2413 case TARGET_SO_DEBUG:
2414 optname = SO_DEBUG;
2415 break;
2416 case TARGET_SO_REUSEADDR:
2417 optname = SO_REUSEADDR;
2418 break;
2419 #ifdef SO_REUSEPORT
2420 case TARGET_SO_REUSEPORT:
2421 optname = SO_REUSEPORT;
2422 break;
2423 #endif
2424 case TARGET_SO_TYPE:
2425 optname = SO_TYPE;
2426 break;
2427 case TARGET_SO_ERROR:
2428 optname = SO_ERROR;
2429 break;
2430 case TARGET_SO_DONTROUTE:
2431 optname = SO_DONTROUTE;
2432 break;
2433 case TARGET_SO_BROADCAST:
2434 optname = SO_BROADCAST;
2435 break;
2436 case TARGET_SO_SNDBUF:
2437 optname = SO_SNDBUF;
2438 break;
2439 case TARGET_SO_SNDBUFFORCE:
2440 optname = SO_SNDBUFFORCE;
2441 break;
2442 case TARGET_SO_RCVBUF:
2443 optname = SO_RCVBUF;
2444 break;
2445 case TARGET_SO_RCVBUFFORCE:
2446 optname = SO_RCVBUFFORCE;
2447 break;
2448 case TARGET_SO_KEEPALIVE:
2449 optname = SO_KEEPALIVE;
2450 break;
2451 case TARGET_SO_OOBINLINE:
2452 optname = SO_OOBINLINE;
2453 break;
2454 case TARGET_SO_NO_CHECK:
2455 optname = SO_NO_CHECK;
2456 break;
2457 case TARGET_SO_PRIORITY:
2458 optname = SO_PRIORITY;
2459 break;
2460 #ifdef SO_BSDCOMPAT
2461 case TARGET_SO_BSDCOMPAT:
2462 optname = SO_BSDCOMPAT;
2463 break;
2464 #endif
2465 case TARGET_SO_PASSCRED:
2466 optname = SO_PASSCRED;
2467 break;
2468 case TARGET_SO_PASSSEC:
2469 optname = SO_PASSSEC;
2470 break;
2471 case TARGET_SO_TIMESTAMP:
2472 optname = SO_TIMESTAMP;
2473 break;
2474 case TARGET_SO_RCVLOWAT:
2475 optname = SO_RCVLOWAT;
2476 break;
2477 default:
2478 goto unimplemented;
2479 }
2480 if (optlen < sizeof(uint32_t))
2481 return -TARGET_EINVAL;
2482
2483 if (get_user_u32(val, optval_addr))
2484 return -TARGET_EFAULT;
2485 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2486 break;
2487 #ifdef SOL_NETLINK
2488 case SOL_NETLINK:
2489 switch (optname) {
2490 case NETLINK_PKTINFO:
2491 case NETLINK_ADD_MEMBERSHIP:
2492 case NETLINK_DROP_MEMBERSHIP:
2493 case NETLINK_BROADCAST_ERROR:
2494 case NETLINK_NO_ENOBUFS:
2495 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2496 case NETLINK_LISTEN_ALL_NSID:
2497 case NETLINK_CAP_ACK:
2498 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2499 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2500 case NETLINK_EXT_ACK:
2501 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2502 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2503 case NETLINK_GET_STRICT_CHK:
2504 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2505 break;
2506 default:
2507 goto unimplemented;
2508 }
2509 val = 0;
2510 if (optlen < sizeof(uint32_t)) {
2511 return -TARGET_EINVAL;
2512 }
2513 if (get_user_u32(val, optval_addr)) {
2514 return -TARGET_EFAULT;
2515 }
2516 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
2517 sizeof(val)));
2518 break;
2519 #endif /* SOL_NETLINK */
2520 default:
2521 unimplemented:
2522 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
2523 level, optname);
2524 ret = -TARGET_ENOPROTOOPT;
2525 }
2526 return ret;
2527 }
2528
2529 /* do_getsockopt() Must return target values and target errnos. */
2530 static abi_long do_getsockopt(int sockfd, int level, int optname,
2531 abi_ulong optval_addr, abi_ulong optlen)
2532 {
2533 abi_long ret;
2534 int len, val;
2535 socklen_t lv;
2536
2537 switch(level) {
2538 case TARGET_SOL_SOCKET:
2539 level = SOL_SOCKET;
2540 switch (optname) {
2541 /* These don't just return a single integer */
2542 case TARGET_SO_PEERNAME:
2543 goto unimplemented;
2544 case TARGET_SO_RCVTIMEO: {
2545 struct timeval tv;
2546 socklen_t tvlen;
2547
2548 optname = SO_RCVTIMEO;
2549
2550 get_timeout:
2551 if (get_user_u32(len, optlen)) {
2552 return -TARGET_EFAULT;
2553 }
2554 if (len < 0) {
2555 return -TARGET_EINVAL;
2556 }
2557
2558 tvlen = sizeof(tv);
2559 ret = get_errno(getsockopt(sockfd, level, optname,
2560 &tv, &tvlen));
2561 if (ret < 0) {
2562 return ret;
2563 }
2564 if (len > sizeof(struct target_timeval)) {
2565 len = sizeof(struct target_timeval);
2566 }
2567 if (copy_to_user_timeval(optval_addr, &tv)) {
2568 return -TARGET_EFAULT;
2569 }
2570 if (put_user_u32(len, optlen)) {
2571 return -TARGET_EFAULT;
2572 }
2573 break;
2574 }
2575 case TARGET_SO_SNDTIMEO:
2576 optname = SO_SNDTIMEO;
2577 goto get_timeout;
2578 case TARGET_SO_PEERCRED: {
2579 struct ucred cr;
2580 socklen_t crlen;
2581 struct target_ucred *tcr;
2582
2583 if (get_user_u32(len, optlen)) {
2584 return -TARGET_EFAULT;
2585 }
2586 if (len < 0) {
2587 return -TARGET_EINVAL;
2588 }
2589
2590 crlen = sizeof(cr);
2591 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2592 &cr, &crlen));
2593 if (ret < 0) {
2594 return ret;
2595 }
2596 if (len > crlen) {
2597 len = crlen;
2598 }
2599 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2600 return -TARGET_EFAULT;
2601 }
2602 __put_user(cr.pid, &tcr->pid);
2603 __put_user(cr.uid, &tcr->uid);
2604 __put_user(cr.gid, &tcr->gid);
2605 unlock_user_struct(tcr, optval_addr, 1);
2606 if (put_user_u32(len, optlen)) {
2607 return -TARGET_EFAULT;
2608 }
2609 break;
2610 }
2611 case TARGET_SO_PEERSEC: {
2612 char *name;
2613
2614 if (get_user_u32(len, optlen)) {
2615 return -TARGET_EFAULT;
2616 }
2617 if (len < 0) {
2618 return -TARGET_EINVAL;
2619 }
2620 name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
2621 if (!name) {
2622 return -TARGET_EFAULT;
2623 }
2624 lv = len;
2625 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
2626 name, &lv));
2627 if (put_user_u32(lv, optlen)) {
2628 ret = -TARGET_EFAULT;
2629 }
2630 unlock_user(name, optval_addr, lv);
2631 break;
2632 }
2633 case TARGET_SO_LINGER:
2634 {
2635 struct linger lg;
2636 socklen_t lglen;
2637 struct target_linger *tlg;
2638
2639 if (get_user_u32(len, optlen)) {
2640 return -TARGET_EFAULT;
2641 }
2642 if (len < 0) {
2643 return -TARGET_EINVAL;
2644 }
2645
2646 lglen = sizeof(lg);
2647 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2648 &lg, &lglen));
2649 if (ret < 0) {
2650 return ret;
2651 }
2652 if (len > lglen) {
2653 len = lglen;
2654 }
2655 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2656 return -TARGET_EFAULT;
2657 }
2658 __put_user(lg.l_onoff, &tlg->l_onoff);
2659 __put_user(lg.l_linger, &tlg->l_linger);
2660 unlock_user_struct(tlg, optval_addr, 1);
2661 if (put_user_u32(len, optlen)) {
2662 return -TARGET_EFAULT;
2663 }
2664 break;
2665 }
2666 /* Options with 'int' argument. */
2667 case TARGET_SO_DEBUG:
2668 optname = SO_DEBUG;
2669 goto int_case;
2670 case TARGET_SO_REUSEADDR:
2671 optname = SO_REUSEADDR;
2672 goto int_case;
2673 #ifdef SO_REUSEPORT
2674 case TARGET_SO_REUSEPORT:
2675 optname = SO_REUSEPORT;
2676 goto int_case;
2677 #endif
2678 case TARGET_SO_TYPE:
2679 optname = SO_TYPE;
2680 goto int_case;
2681 case TARGET_SO_ERROR:
2682 optname = SO_ERROR;
2683 goto int_case;
2684 case TARGET_SO_DONTROUTE:
2685 optname = SO_DONTROUTE;
2686 goto int_case;
2687 case TARGET_SO_BROADCAST:
2688 optname = SO_BROADCAST;
2689 goto int_case;
2690 case TARGET_SO_SNDBUF:
2691 optname = SO_SNDBUF;
2692 goto int_case;
2693 case TARGET_SO_RCVBUF:
2694 optname = SO_RCVBUF;
2695 goto int_case;
2696 case TARGET_SO_KEEPALIVE:
2697 optname = SO_KEEPALIVE;
2698 goto int_case;
2699 case TARGET_SO_OOBINLINE:
2700 optname = SO_OOBINLINE;
2701 goto int_case;
2702 case TARGET_SO_NO_CHECK:
2703 optname = SO_NO_CHECK;
2704 goto int_case;
2705 case TARGET_SO_PRIORITY:
2706 optname = SO_PRIORITY;
2707 goto int_case;
2708 #ifdef SO_BSDCOMPAT
2709 case TARGET_SO_BSDCOMPAT:
2710 optname = SO_BSDCOMPAT;
2711 goto int_case;
2712 #endif
2713 case TARGET_SO_PASSCRED:
2714 optname = SO_PASSCRED;
2715 goto int_case;
2716 case TARGET_SO_TIMESTAMP:
2717 optname = SO_TIMESTAMP;
2718 goto int_case;
2719 case TARGET_SO_RCVLOWAT:
2720 optname = SO_RCVLOWAT;
2721 goto int_case;
2722 case TARGET_SO_ACCEPTCONN:
2723 optname = SO_ACCEPTCONN;
2724 goto int_case;
2725 case TARGET_SO_PROTOCOL:
2726 optname = SO_PROTOCOL;
2727 goto int_case;
2728 case TARGET_SO_DOMAIN:
2729 optname = SO_DOMAIN;
2730 goto int_case;
2731 default:
2732 goto int_case;
2733 }
2734 break;
2735 case SOL_TCP:
2736 case SOL_UDP:
2737 /* TCP and UDP options all take an 'int' value. */
2738 int_case:
2739 if (get_user_u32(len, optlen))
2740 return -TARGET_EFAULT;
2741 if (len < 0)
2742 return -TARGET_EINVAL;
2743 lv = sizeof(lv);
2744 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2745 if (ret < 0)
2746 return ret;
2747 if (optname == SO_TYPE) {
2748 val = host_to_target_sock_type(val);
2749 }
2750 if (len > lv)
2751 len = lv;
2752 if (len == 4) {
2753 if (put_user_u32(val, optval_addr))
2754 return -TARGET_EFAULT;
2755 } else {
2756 if (put_user_u8(val, optval_addr))
2757 return -TARGET_EFAULT;
2758 }
2759 if (put_user_u32(len, optlen))
2760 return -TARGET_EFAULT;
2761 break;
2762 case SOL_IP:
2763 switch(optname) {
2764 case IP_TOS:
2765 case IP_TTL:
2766 case IP_HDRINCL:
2767 case IP_ROUTER_ALERT:
2768 case IP_RECVOPTS:
2769 case IP_RETOPTS:
2770 case IP_PKTINFO:
2771 case IP_MTU_DISCOVER:
2772 case IP_RECVERR:
2773 case IP_RECVTOS:
2774 #ifdef IP_FREEBIND
2775 case IP_FREEBIND:
2776 #endif
2777 case IP_MULTICAST_TTL:
2778 case IP_MULTICAST_LOOP:
2779 if (get_user_u32(len, optlen))
2780 return -TARGET_EFAULT;
2781 if (len < 0)
2782 return -TARGET_EINVAL;
2783 lv = sizeof(lv);
2784 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2785 if (ret < 0)
2786 return ret;
2787 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2788 len = 1;
2789 if (put_user_u32(len, optlen)
2790 || put_user_u8(val, optval_addr))
2791 return -TARGET_EFAULT;
2792 } else {
2793 if (len > sizeof(int))
2794 len = sizeof(int);
2795 if (put_user_u32(len, optlen)
2796 || put_user_u32(val, optval_addr))
2797 return -TARGET_EFAULT;
2798 }
2799 break;
2800 default:
2801 ret = -TARGET_ENOPROTOOPT;
2802 break;
2803 }
2804 break;
2805 case SOL_IPV6:
2806 switch (optname) {
2807 case IPV6_MTU_DISCOVER:
2808 case IPV6_MTU:
2809 case IPV6_V6ONLY:
2810 case IPV6_RECVPKTINFO:
2811 case IPV6_UNICAST_HOPS:
2812 case IPV6_MULTICAST_HOPS:
2813 case IPV6_MULTICAST_LOOP:
2814 case IPV6_RECVERR:
2815 case IPV6_RECVHOPLIMIT:
2816 case IPV6_2292HOPLIMIT:
2817 case IPV6_CHECKSUM:
2818 case IPV6_ADDRFORM:
2819 case IPV6_2292PKTINFO:
2820 case IPV6_RECVTCLASS:
2821 case IPV6_RECVRTHDR:
2822 case IPV6_2292RTHDR:
2823 case IPV6_RECVHOPOPTS:
2824 case IPV6_2292HOPOPTS:
2825 case IPV6_RECVDSTOPTS:
2826 case IPV6_2292DSTOPTS:
2827 case IPV6_TCLASS:
2828 case IPV6_ADDR_PREFERENCES:
2829 #ifdef IPV6_RECVPATHMTU
2830 case IPV6_RECVPATHMTU:
2831 #endif
2832 #ifdef IPV6_TRANSPARENT
2833 case IPV6_TRANSPARENT:
2834 #endif
2835 #ifdef IPV6_FREEBIND
2836 case IPV6_FREEBIND:
2837 #endif
2838 #ifdef IPV6_RECVORIGDSTADDR
2839 case IPV6_RECVORIGDSTADDR:
2840 #endif
2841 if (get_user_u32(len, optlen))
2842 return -TARGET_EFAULT;
2843 if (len < 0)
2844 return -TARGET_EINVAL;
2845 lv = sizeof(lv);
2846 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2847 if (ret < 0)
2848 return ret;
2849 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2850 len = 1;
2851 if (put_user_u32(len, optlen)
2852 || put_user_u8(val, optval_addr))
2853 return -TARGET_EFAULT;
2854 } else {
2855 if (len > sizeof(int))
2856 len = sizeof(int);
2857 if (put_user_u32(len, optlen)
2858 || put_user_u32(val, optval_addr))
2859 return -TARGET_EFAULT;
2860 }
2861 break;
2862 default:
2863 ret = -TARGET_ENOPROTOOPT;
2864 break;
2865 }
2866 break;
2867 #ifdef SOL_NETLINK
2868 case SOL_NETLINK:
2869 switch (optname) {
2870 case NETLINK_PKTINFO:
2871 case NETLINK_BROADCAST_ERROR:
2872 case NETLINK_NO_ENOBUFS:
2873 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2874 case NETLINK_LISTEN_ALL_NSID:
2875 case NETLINK_CAP_ACK:
2876 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2877 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2878 case NETLINK_EXT_ACK:
2879 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2880 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2881 case NETLINK_GET_STRICT_CHK:
2882 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2883 if (get_user_u32(len, optlen)) {
2884 return -TARGET_EFAULT;
2885 }
2886 if (len != sizeof(val)) {
2887 return -TARGET_EINVAL;
2888 }
2889 lv = len;
2890 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2891 if (ret < 0) {
2892 return ret;
2893 }
2894 if (put_user_u32(lv, optlen)
2895 || put_user_u32(val, optval_addr)) {
2896 return -TARGET_EFAULT;
2897 }
2898 break;
2899 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2900 case NETLINK_LIST_MEMBERSHIPS:
2901 {
2902 uint32_t *results;
2903 int i;
2904 if (get_user_u32(len, optlen)) {
2905 return -TARGET_EFAULT;
2906 }
2907 if (len < 0) {
2908 return -TARGET_EINVAL;
2909 }
2910 results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
2911 if (!results && len > 0) {
2912 return -TARGET_EFAULT;
2913 }
2914 lv = len;
2915 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
2916 if (ret < 0) {
2917 unlock_user(results, optval_addr, 0);
2918 return ret;
2919 }
2920 /* swap host endianess to target endianess. */
2921 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
2922 results[i] = tswap32(results[i]);
2923 }
2924 if (put_user_u32(lv, optlen)) {
2925 return -TARGET_EFAULT;
2926 }
2927 unlock_user(results, optval_addr, 0);
2928 break;
2929 }
2930 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2931 default:
2932 goto unimplemented;
2933 }
2934 break;
2935 #endif /* SOL_NETLINK */
2936 default:
2937 unimplemented:
2938 qemu_log_mask(LOG_UNIMP,
2939 "getsockopt level=%d optname=%d not yet supported\n",
2940 level, optname);
2941 ret = -TARGET_EOPNOTSUPP;
2942 break;
2943 }
2944 return ret;
2945 }
2946
2947 /* Convert target low/high pair representing file offset into the host
2948 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2949 * as the kernel doesn't handle them either.
2950 */
2951 static void target_to_host_low_high(abi_ulong tlow,
2952 abi_ulong thigh,
2953 unsigned long *hlow,
2954 unsigned long *hhigh)
2955 {
2956 uint64_t off = tlow |
2957 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2958 TARGET_LONG_BITS / 2;
2959
2960 *hlow = off;
2961 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
2962 }
2963
2964 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
2965 abi_ulong count, int copy)
2966 {
2967 struct target_iovec *target_vec;
2968 struct iovec *vec;
2969 abi_ulong total_len, max_len;
2970 int i;
2971 int err = 0;
2972 bool bad_address = false;
2973
2974 if (count == 0) {
2975 errno = 0;
2976 return NULL;
2977 }
2978 if (count > IOV_MAX) {
2979 errno = EINVAL;
2980 return NULL;
2981 }
2982
2983 vec = g_try_new0(struct iovec, count);
2984 if (vec == NULL) {
2985 errno = ENOMEM;
2986 return NULL;
2987 }
2988
2989 target_vec = lock_user(VERIFY_READ, target_addr,
2990 count * sizeof(struct target_iovec), 1);
2991 if (target_vec == NULL) {
2992 err = EFAULT;
2993 goto fail2;
2994 }
2995
2996 /* ??? If host page size > target page size, this will result in a
2997 value larger than what we can actually support. */
2998 max_len = 0x7fffffff & TARGET_PAGE_MASK;
2999 total_len = 0;
3000
3001 for (i = 0; i < count; i++) {
3002 abi_ulong base = tswapal(target_vec[i].iov_base);
3003 abi_long len = tswapal(target_vec[i].iov_len);
3004
3005 if (len < 0) {
3006 err = EINVAL;
3007 goto fail;
3008 } else if (len == 0) {
3009 /* Zero length pointer is ignored. */
3010 vec[i].iov_base = 0;
3011 } else {
3012 vec[i].iov_base = lock_user(type, base, len, copy);
3013 /* If the first buffer pointer is bad, this is a fault. But
3014 * subsequent bad buffers will result in a partial write; this
3015 * is realized by filling the vector with null pointers and
3016 * zero lengths. */
3017 if (!vec[i].iov_base) {
3018 if (i == 0) {
3019 err = EFAULT;
3020 goto fail;
3021 } else {
3022 bad_address = true;
3023 }
3024 }
3025 if (bad_address) {
3026 len = 0;
3027 }
3028 if (len > max_len - total_len) {
3029 len = max_len - total_len;
3030 }
3031 }
3032 vec[i].iov_len = len;
3033 total_len += len;
3034 }
3035
3036 unlock_user(target_vec, target_addr, 0);
3037 return vec;
3038
3039 fail:
3040 while (--i >= 0) {
3041 if (tswapal(target_vec[i].iov_len) > 0) {
3042 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
3043 }
3044 }
3045 unlock_user(target_vec, target_addr, 0);
3046 fail2:
3047 g_free(vec);
3048 errno = err;
3049 return NULL;
3050 }
3051
3052 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
3053 abi_ulong count, int copy)
3054 {
3055 struct target_iovec *target_vec;
3056 int i;
3057
3058 target_vec = lock_user(VERIFY_READ, target_addr,
3059 count * sizeof(struct target_iovec), 1);
3060 if (target_vec) {
3061 for (i = 0; i < count; i++) {
3062 abi_ulong base = tswapal(target_vec[i].iov_base);
3063 abi_long len = tswapal(target_vec[i].iov_len);
3064 if (len < 0) {
3065 break;
3066 }
3067 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
3068 }
3069 unlock_user(target_vec, target_addr, 0);
3070 }
3071
3072 g_free(vec);
3073 }
3074
3075 static inline int target_to_host_sock_type(int *type)
3076 {
3077 int host_type = 0;
3078 int target_type = *type;
3079
3080 switch (target_type & TARGET_SOCK_TYPE_MASK) {
3081 case TARGET_SOCK_DGRAM:
3082 host_type = SOCK_DGRAM;
3083 break;
3084 case TARGET_SOCK_STREAM:
3085 host_type = SOCK_STREAM;
3086 break;
3087 default:
3088 host_type = target_type & TARGET_SOCK_TYPE_MASK;
3089 break;
3090 }
3091 if (target_type & TARGET_SOCK_CLOEXEC) {
3092 #if defined(SOCK_CLOEXEC)
3093 host_type |= SOCK_CLOEXEC;
3094 #else
3095 return -TARGET_EINVAL;
3096 #endif
3097 }
3098 if (target_type & TARGET_SOCK_NONBLOCK) {
3099 #if defined(SOCK_NONBLOCK)
3100 host_type |= SOCK_NONBLOCK;
3101 #elif !defined(O_NONBLOCK)
3102 return -TARGET_EINVAL;
3103 #endif
3104 }
3105 *type = host_type;
3106 return 0;
3107 }
3108
3109 /* Try to emulate socket type flags after socket creation. */
3110 static int sock_flags_fixup(int fd, int target_type)
3111 {
3112 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
3113 if (target_type & TARGET_SOCK_NONBLOCK) {
3114 int flags = fcntl(fd, F_GETFL);
3115 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
3116 close(fd);
3117 return -TARGET_EINVAL;
3118 }
3119 }
3120 #endif
3121 return fd;
3122 }
3123
3124 /* do_socket() Must return target values and target errnos. */
3125 static abi_long do_socket(int domain, int type, int protocol)
3126 {
3127 int target_type = type;
3128 int ret;
3129
3130 ret = target_to_host_sock_type(&type);
3131 if (ret) {
3132 return ret;
3133 }
3134
3135 if (domain == PF_NETLINK && !(
3136 #ifdef CONFIG_RTNETLINK
3137 protocol == NETLINK_ROUTE ||
3138 #endif
3139 protocol == NETLINK_KOBJECT_UEVENT ||
3140 protocol == NETLINK_AUDIT)) {
3141 return -TARGET_EPROTONOSUPPORT;
3142 }
3143
3144 if (domain == AF_PACKET ||
3145 (domain == AF_INET && type == SOCK_PACKET)) {
3146 protocol = tswap16(protocol);
3147 }
3148
3149 ret = get_errno(socket(domain, type, protocol));
3150 if (ret >= 0) {
3151 ret = sock_flags_fixup(ret, target_type);
3152 if (type == SOCK_PACKET) {
3153 /* Manage an obsolete case :
3154 * if socket type is SOCK_PACKET, bind by name
3155 */
3156 fd_trans_register(ret, &target_packet_trans);
3157 } else if (domain == PF_NETLINK) {
3158 switch (protocol) {
3159 #ifdef CONFIG_RTNETLINK
3160 case NETLINK_ROUTE:
3161 fd_trans_register(ret, &target_netlink_route_trans);
3162 break;
3163 #endif
3164 case NETLINK_KOBJECT_UEVENT:
3165 /* nothing to do: messages are strings */
3166 break;
3167 case NETLINK_AUDIT:
3168 fd_trans_register(ret, &target_netlink_audit_trans);
3169 break;
3170 default:
3171 g_assert_not_reached();
3172 }
3173 }
3174 }
3175 return ret;
3176 }
3177
3178 /* do_bind() Must return target values and target errnos. */
3179 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3180 socklen_t addrlen)
3181 {
3182 void *addr;
3183 abi_long ret;
3184
3185 if ((int)addrlen < 0) {
3186 return -TARGET_EINVAL;
3187 }
3188
3189 addr = alloca(addrlen+1);
3190
3191 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3192 if (ret)
3193 return ret;
3194
3195 return get_errno(bind(sockfd, addr, addrlen));
3196 }
3197
3198 /* do_connect() Must return target values and target errnos. */
3199 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3200 socklen_t addrlen)
3201 {
3202 void *addr;
3203 abi_long ret;
3204
3205 if ((int)addrlen < 0) {
3206 return -TARGET_EINVAL;
3207 }
3208
3209 addr = alloca(addrlen+1);
3210
3211 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3212 if (ret)
3213 return ret;
3214
3215 return get_errno(safe_connect(sockfd, addr, addrlen));
3216 }
3217
3218 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3219 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3220 int flags, int send)
3221 {
3222 abi_long ret, len;
3223 struct msghdr msg;
3224 abi_ulong count;
3225 struct iovec *vec;
3226 abi_ulong target_vec;
3227
3228 if (msgp->msg_name) {
3229 msg.msg_namelen = tswap32(msgp->msg_namelen);
3230 msg.msg_name = alloca(msg.msg_namelen+1);
3231 ret = target_to_host_sockaddr(fd, msg.msg_name,
3232 tswapal(msgp->msg_name),
3233 msg.msg_namelen);
3234 if (ret == -TARGET_EFAULT) {
3235 /* For connected sockets msg_name and msg_namelen must
3236 * be ignored, so returning EFAULT immediately is wrong.
3237 * Instead, pass a bad msg_name to the host kernel, and
3238 * let it decide whether to return EFAULT or not.
3239 */
3240 msg.msg_name = (void *)-1;
3241 } else if (ret) {
3242 goto out2;
3243 }
3244 } else {
3245 msg.msg_name = NULL;
3246 msg.msg_namelen = 0;
3247 }
3248 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3249 msg.msg_control = alloca(msg.msg_controllen);
3250 memset(msg.msg_control, 0, msg.msg_controllen);
3251
3252 msg.msg_flags = tswap32(msgp->msg_flags);
3253
3254 count = tswapal(msgp->msg_iovlen);
3255 target_vec = tswapal(msgp->msg_iov);
3256
3257 if (count > IOV_MAX) {
3258 /* sendrcvmsg returns a different errno for this condition than
3259 * readv/writev, so we must catch it here before lock_iovec() does.
3260 */
3261 ret = -TARGET_EMSGSIZE;
3262 goto out2;
3263 }
3264
3265 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3266 target_vec, count, send);
3267 if (vec == NULL) {
3268 ret = -host_to_target_errno(errno);
3269 goto out2;
3270 }
3271 msg.msg_iovlen = count;
3272 msg.msg_iov = vec;
3273
3274 if (send) {
3275 if (fd_trans_target_to_host_data(fd)) {
3276 void *host_msg;
3277
3278 host_msg = g_malloc(msg.msg_iov->iov_len);
3279 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3280 ret = fd_trans_target_to_host_data(fd)(host_msg,
3281 msg.msg_iov->iov_len);
3282 if (ret >= 0) {
3283 msg.msg_iov->iov_base = host_msg;
3284 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3285 }
3286 g_free(host_msg);
3287 } else {
3288 ret = target_to_host_cmsg(&msg, msgp);
3289 if (ret == 0) {
3290 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3291 }
3292 }
3293 } else {
3294 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3295 if (!is_error(ret)) {
3296 len = ret;
3297 if (fd_trans_host_to_target_data(fd)) {
3298 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3299 MIN(msg.msg_iov->iov_len, len));
3300 } else {
3301 ret = host_to_target_cmsg(msgp, &msg);
3302 }
3303 if (!is_error(ret)) {
3304 msgp->msg_namelen = tswap32(msg.msg_namelen);
3305 msgp->msg_flags = tswap32(msg.msg_flags);
3306 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3307 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3308 msg.msg_name, msg.msg_namelen);
3309 if (ret) {
3310 goto out;
3311 }
3312 }
3313
3314 ret = len;
3315 }
3316 }
3317 }
3318
3319 out:
3320 unlock_iovec(vec, target_vec, count, !send);
3321 out2:
3322 return ret;
3323 }
3324
3325 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3326 int flags, int send)
3327 {
3328 abi_long ret;
3329 struct target_msghdr *msgp;
3330
3331 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3332 msgp,
3333 target_msg,
3334 send ? 1 : 0)) {
3335 return -TARGET_EFAULT;
3336 }
3337 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3338 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3339 return ret;
3340 }
3341
3342 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3343 * so it might not have this *mmsg-specific flag either.
3344 */
3345 #ifndef MSG_WAITFORONE
3346 #define MSG_WAITFORONE 0x10000
3347 #endif
3348
3349 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3350 unsigned int vlen, unsigned int flags,
3351 int send)
3352 {
3353 struct target_mmsghdr *mmsgp;
3354 abi_long ret = 0;
3355 int i;
3356
3357 if (vlen > UIO_MAXIOV) {
3358 vlen = UIO_MAXIOV;
3359 }
3360
3361 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3362 if (!mmsgp) {
3363 return -TARGET_EFAULT;
3364 }
3365
3366 for (i = 0; i < vlen; i++) {
3367 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3368 if (is_error(ret)) {
3369 break;
3370 }
3371 mmsgp[i].msg_len = tswap32(ret);
3372 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3373 if (flags & MSG_WAITFORONE) {
3374 flags |= MSG_DONTWAIT;
3375 }
3376 }
3377
3378 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3379
3380 /* Return number of datagrams sent if we sent any at all;
3381 * otherwise return the error.
3382 */
3383 if (i) {
3384 return i;
3385 }
3386 return ret;
3387 }
3388
3389 /* do_accept4() Must return target values and target errnos. */
3390 static abi_long do_accept4(int fd, abi_ulong target_addr,
3391 abi_ulong target_addrlen_addr, int flags)
3392 {
3393 socklen_t addrlen, ret_addrlen;
3394 void *addr;
3395 abi_long ret;
3396 int host_flags;
3397
3398 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3399
3400 if (target_addr == 0) {
3401 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3402 }
3403
3404 /* linux returns EFAULT if addrlen pointer is invalid */
3405 if (get_user_u32(addrlen, target_addrlen_addr))
3406 return -TARGET_EFAULT;
3407
3408 if ((int)addrlen < 0) {
3409 return -TARGET_EINVAL;
3410 }
3411
3412 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3413 return -TARGET_EFAULT;
3414 }
3415
3416 addr = alloca(addrlen);
3417
3418 ret_addrlen = addrlen;
3419 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3420 if (!is_error(ret)) {
3421 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3422 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3423 ret = -TARGET_EFAULT;
3424 }
3425 }
3426 return ret;
3427 }
3428
3429 /* do_getpeername() Must return target values and target errnos. */
3430 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3431 abi_ulong target_addrlen_addr)
3432 {
3433 socklen_t addrlen, ret_addrlen;
3434 void *addr;
3435 abi_long ret;
3436
3437 if (get_user_u32(addrlen, target_addrlen_addr))
3438 return -TARGET_EFAULT;
3439
3440 if ((int)addrlen < 0) {
3441 return -TARGET_EINVAL;
3442 }
3443
3444 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3445 return -TARGET_EFAULT;
3446 }
3447
3448 addr = alloca(addrlen);
3449
3450 ret_addrlen = addrlen;
3451 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3452 if (!is_error(ret)) {
3453 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3454 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3455 ret = -TARGET_EFAULT;
3456 }
3457 }
3458 return ret;
3459 }
3460
3461 /* do_getsockname() Must return target values and target errnos. */
3462 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3463 abi_ulong target_addrlen_addr)
3464 {
3465 socklen_t addrlen, ret_addrlen;
3466 void *addr;
3467 abi_long ret;
3468
3469 if (get_user_u32(addrlen, target_addrlen_addr))
3470 return -TARGET_EFAULT;
3471
3472 if ((int)addrlen < 0) {
3473 return -TARGET_EINVAL;
3474 }
3475
3476 if (!access_ok(thread_cpu, VERIFY_WRITE, target_addr, addrlen)) {
3477 return -TARGET_EFAULT;
3478 }
3479
3480 addr = alloca(addrlen);
3481
3482 ret_addrlen = addrlen;
3483 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3484 if (!is_error(ret)) {
3485 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3486 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3487 ret = -TARGET_EFAULT;
3488 }
3489 }
3490 return ret;
3491 }
3492
3493 /* do_socketpair() Must return target values and target errnos. */
3494 static abi_long do_socketpair(int domain, int type, int protocol,
3495 abi_ulong target_tab_addr)
3496 {
3497 int tab[2];
3498 abi_long ret;
3499
3500 target_to_host_sock_type(&type);
3501
3502 ret = get_errno(socketpair(domain, type, protocol, tab));
3503 if (!is_error(ret)) {
3504 if (put_user_s32(tab[0], target_tab_addr)
3505 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3506 ret = -TARGET_EFAULT;
3507 }
3508 return ret;
3509 }
3510
3511 /* do_sendto() Must return target values and target errnos. */
3512 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3513 abi_ulong target_addr, socklen_t addrlen)
3514 {
3515 void *addr;
3516 void *host_msg;
3517 void *copy_msg = NULL;
3518 abi_long ret;
3519
3520 if ((int)addrlen < 0) {
3521 return -TARGET_EINVAL;
3522 }
3523
3524 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3525 if (!host_msg)
3526 return -TARGET_EFAULT;
3527 if (fd_trans_target_to_host_data(fd)) {
3528 copy_msg = host_msg;
3529 host_msg = g_malloc(len);
3530 memcpy(host_msg, copy_msg, len);
3531 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3532 if (ret < 0) {
3533 goto fail;
3534 }
3535 }
3536 if (target_addr) {
3537 addr = alloca(addrlen+1);
3538 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3539 if (ret) {
3540 goto fail;
3541 }
3542 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3543 } else {
3544 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3545 }
3546 fail:
3547 if (copy_msg) {
3548 g_free(host_msg);
3549 host_msg = copy_msg;
3550 }
3551 unlock_user(host_msg, msg, 0);
3552 return ret;
3553 }
3554
3555 /* do_recvfrom() Must return target values and target errnos. */
3556 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3557 abi_ulong target_addr,
3558 abi_ulong target_addrlen)
3559 {
3560 socklen_t addrlen, ret_addrlen;
3561 void *addr;
3562 void *host_msg;
3563 abi_long ret;
3564
3565 if (!msg) {
3566 host_msg = NULL;
3567 } else {
3568 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3569 if (!host_msg) {
3570 return -TARGET_EFAULT;
3571 }
3572 }
3573 if (target_addr) {
3574 if (get_user_u32(addrlen, target_addrlen)) {
3575 ret = -TARGET_EFAULT;
3576 goto fail;
3577 }
3578 if ((int)addrlen < 0) {
3579 ret = -TARGET_EINVAL;
3580 goto fail;
3581 }
3582 addr = alloca(addrlen);
3583 ret_addrlen = addrlen;
3584 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3585 addr, &ret_addrlen));
3586 } else {
3587 addr = NULL; /* To keep compiler quiet. */
3588 addrlen = 0; /* To keep compiler quiet. */
3589 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3590 }
3591 if (!is_error(ret)) {
3592 if (fd_trans_host_to_target_data(fd)) {
3593 abi_long trans;
3594 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3595 if (is_error(trans)) {
3596 ret = trans;
3597 goto fail;
3598 }
3599 }
3600 if (target_addr) {
3601 host_to_target_sockaddr(target_addr, addr,
3602 MIN(addrlen, ret_addrlen));
3603 if (put_user_u32(ret_addrlen, target_addrlen)) {
3604 ret = -TARGET_EFAULT;
3605 goto fail;
3606 }
3607 }
3608 unlock_user(host_msg, msg, len);
3609 } else {
3610 fail:
3611 unlock_user(host_msg, msg, 0);
3612 }
3613 return ret;
3614 }
3615
3616 #ifdef TARGET_NR_socketcall
3617 /* do_socketcall() must return target values and target errnos. */
3618 static abi_long do_socketcall(int num, abi_ulong vptr)
3619 {
3620 static const unsigned nargs[] = { /* number of arguments per operation */
3621 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3622 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3623 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3624 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3625 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3626 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3627 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3628 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3629 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3630 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3631 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3632 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3633 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3634 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3635 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3636 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3637 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3638 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3639 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3640 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3641 };
3642 abi_long a[6]; /* max 6 args */
3643 unsigned i;
3644
3645 /* check the range of the first argument num */
3646 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3647 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3648 return -TARGET_EINVAL;
3649 }
3650 /* ensure we have space for args */
3651 if (nargs[num] > ARRAY_SIZE(a)) {
3652 return -TARGET_EINVAL;
3653 }
3654 /* collect the arguments in a[] according to nargs[] */
3655 for (i = 0; i < nargs[num]; ++i) {
3656 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3657 return -TARGET_EFAULT;
3658 }
3659 }
3660 /* now when we have the args, invoke the appropriate underlying function */
3661 switch (num) {
3662 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3663 return do_socket(a[0], a[1], a[2]);
3664 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3665 return do_bind(a[0], a[1], a[2]);
3666 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3667 return do_connect(a[0], a[1], a[2]);
3668 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3669 return get_errno(listen(a[0], a[1]));
3670 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3671 return do_accept4(a[0], a[1], a[2], 0);
3672 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3673 return do_getsockname(a[0], a[1], a[2]);
3674 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3675 return do_getpeername(a[0], a[1], a[2]);
3676 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3677 return do_socketpair(a[0], a[1], a[2], a[3]);
3678 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3679 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3680 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3681 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3682 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3683 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3684 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3685 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3686 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3687 return get_errno(shutdown(a[0], a[1]));
3688 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3689 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3690 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3691 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3692 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3693 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3694 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3695 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3696 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3697 return do_accept4(a[0], a[1], a[2], a[3]);
3698 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3699 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3700 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3701 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3702 default:
3703 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
3704 return -TARGET_EINVAL;
3705 }
3706 }
3707 #endif
3708
3709 #define N_SHM_REGIONS 32
3710
3711 static struct shm_region {
3712 abi_ulong start;
3713 abi_ulong size;
3714 bool in_use;
3715 } shm_regions[N_SHM_REGIONS];
3716
3717 #ifndef TARGET_SEMID64_DS
3718 /* asm-generic version of this struct */
3719 struct target_semid64_ds
3720 {
3721 struct target_ipc_perm sem_perm;
3722 abi_ulong sem_otime;
3723 #if TARGET_ABI_BITS == 32
3724 abi_ulong __unused1;
3725 #endif
3726 abi_ulong sem_ctime;
3727 #if TARGET_ABI_BITS == 32
3728 abi_ulong __unused2;
3729 #endif
3730 abi_ulong sem_nsems;
3731 abi_ulong __unused3;
3732 abi_ulong __unused4;
3733 };
3734 #endif
3735
3736 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3737 abi_ulong target_addr)
3738 {
3739 struct target_ipc_perm *target_ip;
3740 struct target_semid64_ds *target_sd;
3741
3742 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3743 return -TARGET_EFAULT;
3744 target_ip = &(target_sd->sem_perm);
3745 host_ip->__key = tswap32(target_ip->__key);
3746 host_ip->uid = tswap32(target_ip->uid);
3747 host_ip->gid = tswap32(target_ip->gid);
3748 host_ip->cuid = tswap32(target_ip->cuid);
3749 host_ip->cgid = tswap32(target_ip->cgid);
3750 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3751 host_ip->mode = tswap32(target_ip->mode);
3752 #else
3753 host_ip->mode = tswap16(target_ip->mode);
3754 #endif
3755 #if defined(TARGET_PPC)
3756 host_ip->__seq = tswap32(target_ip->__seq);
3757 #else
3758 host_ip->__seq = tswap16(target_ip->__seq);
3759 #endif
3760 unlock_user_struct(target_sd, target_addr, 0);
3761 return 0;
3762 }
3763
3764 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3765 struct ipc_perm *host_ip)
3766 {
3767 struct target_ipc_perm *target_ip;
3768 struct target_semid64_ds *target_sd;
3769
3770 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3771 return -TARGET_EFAULT;
3772 target_ip = &(target_sd->sem_perm);
3773 target_ip->__key = tswap32(host_ip->__key);
3774 target_ip->uid = tswap32(host_ip->uid);
3775 target_ip->gid = tswap32(host_ip->gid);
3776 target_ip->cuid = tswap32(host_ip->cuid);
3777 target_ip->cgid = tswap32(host_ip->cgid);
3778 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3779 target_ip->mode = tswap32(host_ip->mode);
3780 #else
3781 target_ip->mode = tswap16(host_ip->mode);
3782 #endif
3783 #if defined(TARGET_PPC)
3784 target_ip->__seq = tswap32(host_ip->__seq);
3785 #else
3786 target_ip->__seq = tswap16(host_ip->__seq);
3787 #endif
3788 unlock_user_struct(target_sd, target_addr, 1);
3789 return 0;
3790 }
3791
3792 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3793 abi_ulong target_addr)
3794 {
3795 struct target_semid64_ds *target_sd;
3796
3797 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3798 return -TARGET_EFAULT;
3799 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3800 return -TARGET_EFAULT;
3801 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3802 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3803 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3804 unlock_user_struct(target_sd, target_addr, 0);
3805 return 0;
3806 }
3807
3808 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3809 struct semid_ds *host_sd)
3810 {
3811 struct target_semid64_ds *target_sd;
3812
3813 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3814 return -TARGET_EFAULT;
3815 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3816 return -TARGET_EFAULT;
3817 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3818 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3819 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3820 unlock_user_struct(target_sd, target_addr, 1);
3821 return 0;
3822 }
3823
3824 struct target_seminfo {
3825 int semmap;
3826 int semmni;
3827 int semmns;
3828 int semmnu;
3829 int semmsl;
3830 int semopm;
3831 int semume;
3832 int semusz;
3833 int semvmx;
3834 int semaem;
3835 };
3836
3837 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3838 struct seminfo *host_seminfo)
3839 {
3840 struct target_seminfo *target_seminfo;
3841 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3842 return -TARGET_EFAULT;
3843 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3844 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3845 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3846 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3847 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3848 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3849 __put_user(host_seminfo->semume, &target_seminfo->semume);
3850 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3851 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3852 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3853 unlock_user_struct(target_seminfo, target_addr, 1);
3854 return 0;
3855 }
3856
3857 union semun {
3858 int val;
3859 struct semid_ds *buf;
3860 unsigned short *array;
3861 struct seminfo *__buf;
3862 };
3863
3864 union target_semun {
3865 int val;
3866 abi_ulong buf;
3867 abi_ulong array;
3868 abi_ulong __buf;
3869 };
3870
3871 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3872 abi_ulong target_addr)
3873 {
3874 int nsems;
3875 unsigned short *array;
3876 union semun semun;
3877 struct semid_ds semid_ds;
3878 int i, ret;
3879
3880 semun.buf = &semid_ds;
3881
3882 ret = semctl(semid, 0, IPC_STAT, semun);
3883 if (ret == -1)
3884 return get_errno(ret);
3885
3886 nsems = semid_ds.sem_nsems;
3887
3888 *host_array = g_try_new(unsigned short, nsems);
3889 if (!*host_array) {
3890 return -TARGET_ENOMEM;
3891 }
3892 array = lock_user(VERIFY_READ, target_addr,
3893 nsems*sizeof(unsigned short), 1);
3894 if (!array) {
3895 g_free(*host_array);
3896 return -TARGET_EFAULT;
3897 }
3898
3899 for(i=0; i<nsems; i++) {
3900 __get_user((*host_array)[i], &array[i]);
3901 }
3902 unlock_user(array, target_addr, 0);
3903
3904 return 0;
3905 }
3906
3907 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3908 unsigned short **host_array)
3909 {
3910 int nsems;
3911 unsigned short *array;
3912 union semun semun;
3913 struct semid_ds semid_ds;
3914 int i, ret;
3915
3916 semun.buf = &semid_ds;
3917
3918 ret = semctl(semid, 0, IPC_STAT, semun);
3919 if (ret == -1)
3920 return get_errno(ret);
3921
3922 nsems = semid_ds.sem_nsems;
3923
3924 array = lock_user(VERIFY_WRITE, target_addr,
3925 nsems*sizeof(unsigned short), 0);
3926 if (!array)
3927 return -TARGET_EFAULT;
3928
3929 for(i=0; i<nsems; i++) {
3930 __put_user((*host_array)[i], &array[i]);
3931 }
3932 g_free(*host_array);
3933 unlock_user(array, target_addr, 1);
3934
3935 return 0;
3936 }
3937
3938 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3939 abi_ulong target_arg)
3940 {
3941 union target_semun target_su = { .buf = target_arg };
3942 union semun arg;
3943 struct semid_ds dsarg;
3944 unsigned short *array = NULL;
3945 struct seminfo seminfo;
3946 abi_long ret = -TARGET_EINVAL;
3947 abi_long err;
3948 cmd &= 0xff;
3949
3950 switch( cmd ) {
3951 case GETVAL:
3952 case SETVAL:
3953 /* In 64 bit cross-endian situations, we will erroneously pick up
3954 * the wrong half of the union for the "val" element. To rectify
3955 * this, the entire 8-byte structure is byteswapped, followed by
3956 * a swap of the 4 byte val field. In other cases, the data is
3957 * already in proper host byte order. */
3958 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
3959 target_su.buf = tswapal(target_su.buf);
3960 arg.val = tswap32(target_su.val);
3961 } else {
3962 arg.val = target_su.val;
3963 }
3964 ret = get_errno(semctl(semid, semnum, cmd, arg));
3965 break;
3966 case GETALL:
3967 case SETALL:
3968 err = target_to_host_semarray(semid, &array, target_su.array);
3969 if (err)
3970 return err;
3971 arg.array = array;
3972 ret = get_errno(semctl(semid, semnum, cmd, arg));
3973 err = host_to_target_semarray(semid, target_su.array, &array);
3974 if (err)
3975 return err;
3976 break;
3977 case IPC_STAT:
3978 case IPC_SET:
3979 case SEM_STAT:
3980 err = target_to_host_semid_ds(&dsarg, target_su.buf);
3981 if (err)
3982 return err;
3983 arg.buf = &dsarg;
3984 ret = get_errno(semctl(semid, semnum, cmd, arg));
3985 err = host_to_target_semid_ds(target_su.buf, &dsarg);
3986 if (err)
3987 return err;
3988 break;
3989 case IPC_INFO:
3990 case SEM_INFO:
3991 arg.__buf = &seminfo;
3992 ret = get_errno(semctl(semid, semnum, cmd, arg));
3993 err = host_to_target_seminfo(target_su.__buf, &seminfo);
3994 if (err)
3995 return err;
3996 break;
3997 case IPC_RMID:
3998 case GETPID:
3999 case GETNCNT:
4000 case GETZCNT:
4001 ret = get_errno(semctl(semid, semnum, cmd, NULL));
4002 break;
4003 }
4004
4005 return ret;
4006 }
4007
4008 struct target_sembuf {
4009 unsigned short sem_num;
4010 short sem_op;
4011 short sem_flg;
4012 };
4013
4014 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
4015 abi_ulong target_addr,
4016 unsigned nsops)
4017 {
4018 struct target_sembuf *target_sembuf;
4019 int i;
4020
4021 target_sembuf = lock_user(VERIFY_READ, target_addr,
4022 nsops*sizeof(struct target_sembuf), 1);
4023 if (!target_sembuf)
4024 return -TARGET_EFAULT;
4025
4026 for(i=0; i<nsops; i++) {
4027 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
4028 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
4029 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
4030 }
4031
4032 unlock_user(target_sembuf, target_addr, 0);
4033
4034 return 0;
4035 }
4036
4037 #if defined(TARGET_NR_ipc) || defined(TARGET_NR_semop) || \
4038 defined(TARGET_NR_semtimedop) || defined(TARGET_NR_semtimedop_time64)
4039
4040 /*
4041 * This macro is required to handle the s390 variants, which passes the
4042 * arguments in a different order than default.
4043 */
4044 #ifdef __s390x__
4045 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4046 (__nsops), (__timeout), (__sops)
4047 #else
4048 #define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
4049 (__nsops), 0, (__sops), (__timeout)
4050 #endif
4051
4052 static inline abi_long do_semtimedop(int semid,
4053 abi_long ptr,
4054 unsigned nsops,
4055 abi_long timeout, bool time64)
4056 {
4057 struct sembuf *sops;
4058 struct timespec ts, *pts = NULL;
4059 abi_long ret;
4060
4061 if (timeout) {
4062 pts = &ts;
4063 if (time64) {
4064 if (target_to_host_timespec64(pts, timeout)) {
4065 return -TARGET_EFAULT;
4066 }
4067 } else {
4068 if (target_to_host_timespec(pts, timeout)) {
4069 return -TARGET_EFAULT;
4070 }
4071 }
4072 }
4073
4074 if (nsops > TARGET_SEMOPM) {
4075 return -TARGET_E2BIG;
4076 }
4077
4078 sops = g_new(struct sembuf, nsops);
4079
4080 if (target_to_host_sembuf(sops, ptr, nsops)) {
4081 g_free(sops);
4082 return -TARGET_EFAULT;
4083 }
4084
4085 ret = -TARGET_ENOSYS;
4086 #ifdef __NR_semtimedop
4087 ret = get_errno(safe_semtimedop(semid, sops, nsops, pts));
4088 #endif
4089 #ifdef __NR_ipc
4090 if (ret == -TARGET_ENOSYS) {
4091 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid,
4092 SEMTIMEDOP_IPC_ARGS(nsops, sops, (long)pts)));
4093 }
4094 #endif
4095 g_free(sops);
4096 return ret;
4097 }
4098 #endif
4099
4100 struct target_msqid_ds
4101 {
4102 struct target_ipc_perm msg_perm;
4103 abi_ulong msg_stime;
4104 #if TARGET_ABI_BITS == 32
4105 abi_ulong __unused1;
4106 #endif
4107 abi_ulong msg_rtime;
4108 #if TARGET_ABI_BITS == 32
4109 abi_ulong __unused2;
4110 #endif
4111 abi_ulong msg_ctime;
4112 #if TARGET_ABI_BITS == 32
4113 abi_ulong __unused3;
4114 #endif
4115 abi_ulong __msg_cbytes;
4116 abi_ulong msg_qnum;
4117 abi_ulong msg_qbytes;
4118 abi_ulong msg_lspid;
4119 abi_ulong msg_lrpid;
4120 abi_ulong __unused4;
4121 abi_ulong __unused5;
4122 };
4123
4124 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
4125 abi_ulong target_addr)
4126 {
4127 struct target_msqid_ds *target_md;
4128
4129 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
4130 return -TARGET_EFAULT;
4131 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
4132 return -TARGET_EFAULT;
4133 host_md->msg_stime = tswapal(target_md->msg_stime);
4134 host_md->msg_rtime = tswapal(target_md->msg_rtime);
4135 host_md->msg_ctime = tswapal(target_md->msg_ctime);
4136 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
4137 host_md->msg_qnum = tswapal(target_md->msg_qnum);
4138 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
4139 host_md->msg_lspid = tswapal(target_md->msg_lspid);
4140 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
4141 unlock_user_struct(target_md, target_addr, 0);
4142 return 0;
4143 }
4144
4145 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
4146 struct msqid_ds *host_md)
4147 {
4148 struct target_msqid_ds *target_md;
4149
4150 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
4151 return -TARGET_EFAULT;
4152 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
4153 return -TARGET_EFAULT;
4154 target_md->msg_stime = tswapal(host_md->msg_stime);
4155 target_md->msg_rtime = tswapal(host_md->msg_rtime);
4156 target_md->msg_ctime = tswapal(host_md->msg_ctime);
4157 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
4158 target_md->msg_qnum = tswapal(host_md->msg_qnum);
4159 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
4160 target_md->msg_lspid = tswapal(host_md->msg_lspid);
4161 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
4162 unlock_user_struct(target_md, target_addr, 1);
4163 return 0;
4164 }
4165
4166 struct target_msginfo {
4167 int msgpool;
4168 int msgmap;
4169 int msgmax;
4170 int msgmnb;
4171 int msgmni;
4172 int msgssz;
4173 int msgtql;
4174 unsigned short int msgseg;
4175 };
4176
4177 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
4178 struct msginfo *host_msginfo)
4179 {
4180 struct target_msginfo *target_msginfo;
4181 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
4182 return -TARGET_EFAULT;
4183 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
4184 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
4185 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
4186 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
4187 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
4188 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
4189 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
4190 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
4191 unlock_user_struct(target_msginfo, target_addr, 1);
4192 return 0;
4193 }
4194
4195 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
4196 {
4197 struct msqid_ds dsarg;
4198 struct msginfo msginfo;
4199 abi_long ret = -TARGET_EINVAL;
4200
4201 cmd &= 0xff;
4202
4203 switch (cmd) {
4204 case IPC_STAT:
4205 case IPC_SET:
4206 case MSG_STAT:
4207 if (target_to_host_msqid_ds(&dsarg,ptr))
4208 return -TARGET_EFAULT;
4209 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4210 if (host_to_target_msqid_ds(ptr,&dsarg))
4211 return -TARGET_EFAULT;
4212 break;
4213 case IPC_RMID:
4214 ret = get_errno(msgctl(msgid, cmd, NULL));
4215 break;
4216 case IPC_INFO:
4217 case MSG_INFO:
4218 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4219 if (host_to_target_msginfo(ptr, &msginfo))
4220 return -TARGET_EFAULT;
4221 break;
4222 }
4223
4224 return ret;
4225 }
4226
4227 struct target_msgbuf {
4228 abi_long mtype;
4229 char mtext[1];
4230 };
4231
4232 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4233 ssize_t msgsz, int msgflg)
4234 {
4235 struct target_msgbuf *target_mb;
4236 struct msgbuf *host_mb;
4237 abi_long ret = 0;
4238
4239 if (msgsz < 0) {
4240 return -TARGET_EINVAL;
4241 }
4242
4243 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4244 return -TARGET_EFAULT;
4245 host_mb = g_try_malloc(msgsz + sizeof(long));
4246 if (!host_mb) {
4247 unlock_user_struct(target_mb, msgp, 0);
4248 return -TARGET_ENOMEM;
4249 }
4250 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4251 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4252 ret = -TARGET_ENOSYS;
4253 #ifdef __NR_msgsnd
4254 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4255 #endif
4256 #ifdef __NR_ipc
4257 if (ret == -TARGET_ENOSYS) {
4258 #ifdef __s390x__
4259 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4260 host_mb));
4261 #else
4262 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4263 host_mb, 0));
4264 #endif
4265 }
4266 #endif
4267 g_free(host_mb);
4268 unlock_user_struct(target_mb, msgp, 0);
4269
4270 return ret;
4271 }
4272
4273 #ifdef __NR_ipc
4274 #if defined(__sparc__)
4275 /* SPARC for msgrcv it does not use the kludge on final 2 arguments. */
4276 #define MSGRCV_ARGS(__msgp, __msgtyp) __msgp, __msgtyp
4277 #elif defined(__s390x__)
4278 /* The s390 sys_ipc variant has only five parameters. */
4279 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4280 ((long int[]){(long int)__msgp, __msgtyp})
4281 #else
4282 #define MSGRCV_ARGS(__msgp, __msgtyp) \
4283 ((long int[]){(long int)__msgp, __msgtyp}), 0
4284 #endif
4285 #endif
4286
4287 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4288 ssize_t msgsz, abi_long msgtyp,
4289 int msgflg)
4290 {
4291 struct target_msgbuf *target_mb;
4292 char *target_mtext;
4293 struct msgbuf *host_mb;
4294 abi_long ret = 0;
4295
4296 if (msgsz < 0) {
4297 return -TARGET_EINVAL;
4298 }
4299
4300 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4301 return -TARGET_EFAULT;
4302
4303 host_mb = g_try_malloc(msgsz + sizeof(long));
4304 if (!host_mb) {
4305 ret = -TARGET_ENOMEM;
4306 goto end;
4307 }
4308 ret = -TARGET_ENOSYS;
4309 #ifdef __NR_msgrcv
4310 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4311 #endif
4312 #ifdef __NR_ipc
4313 if (ret == -TARGET_ENOSYS) {
4314 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
4315 msgflg, MSGRCV_ARGS(host_mb, msgtyp)));
4316 }
4317 #endif
4318
4319 if (ret > 0) {
4320 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4321 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4322 if (!target_mtext) {
4323 ret = -TARGET_EFAULT;
4324 goto end;
4325 }
4326 memcpy(target_mb->mtext, host_mb->mtext, ret);
4327 unlock_user(target_mtext, target_mtext_addr, ret);
4328 }
4329
4330 target_mb->mtype = tswapal(host_mb->mtype);
4331
4332 end:
4333 if (target_mb)
4334 unlock_user_struct(target_mb, msgp, 1);
4335 g_free(host_mb);
4336 return ret;
4337 }
4338
4339 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4340 abi_ulong target_addr)
4341 {
4342 struct target_shmid_ds *target_sd;
4343
4344 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4345 return -TARGET_EFAULT;
4346 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4347 return -TARGET_EFAULT;
4348 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4349 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4350 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4351 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4352 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4353 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4354 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4355 unlock_user_struct(target_sd, target_addr, 0);
4356 return 0;
4357 }
4358
4359 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4360 struct shmid_ds *host_sd)
4361 {
4362 struct target_shmid_ds *target_sd;
4363
4364 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4365 return -TARGET_EFAULT;
4366 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4367 return -TARGET_EFAULT;
4368 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4369 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4370 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4371 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4372 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4373 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4374 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4375 unlock_user_struct(target_sd, target_addr, 1);
4376 return 0;
4377 }
4378
4379 struct target_shminfo {
4380 abi_ulong shmmax;
4381 abi_ulong shmmin;
4382 abi_ulong shmmni;
4383 abi_ulong shmseg;
4384 abi_ulong shmall;
4385 };
4386
4387 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4388 struct shminfo *host_shminfo)
4389 {
4390 struct target_shminfo *target_shminfo;
4391 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4392 return -TARGET_EFAULT;
4393 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4394 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4395 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4396 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4397 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4398 unlock_user_struct(target_shminfo, target_addr, 1);
4399 return 0;
4400 }
4401
4402 struct target_shm_info {
4403 int used_ids;
4404 abi_ulong shm_tot;
4405 abi_ulong shm_rss;
4406 abi_ulong shm_swp;
4407 abi_ulong swap_attempts;
4408 abi_ulong swap_successes;
4409 };
4410
4411 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4412 struct shm_info *host_shm_info)
4413 {
4414 struct target_shm_info *target_shm_info;
4415 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4416 return -TARGET_EFAULT;
4417 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4418 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4419 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4420 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4421 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4422 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4423 unlock_user_struct(target_shm_info, target_addr, 1);
4424 return 0;
4425 }
4426
4427 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4428 {
4429 struct shmid_ds dsarg;
4430 struct shminfo shminfo;
4431 struct shm_info shm_info;
4432 abi_long ret = -TARGET_EINVAL;
4433
4434 cmd &= 0xff;
4435
4436 switch(cmd) {
4437 case IPC_STAT:
4438 case IPC_SET:
4439 case SHM_STAT:
4440 if (target_to_host_shmid_ds(&dsarg, buf))
4441 return -TARGET_EFAULT;
4442 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4443 if (host_to_target_shmid_ds(buf, &dsarg))
4444 return -TARGET_EFAULT;
4445 break;
4446 case IPC_INFO:
4447 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4448 if (host_to_target_shminfo(buf, &shminfo))
4449 return -TARGET_EFAULT;
4450 break;
4451 case SHM_INFO:
4452 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4453 if (host_to_target_shm_info(buf, &shm_info))
4454 return -TARGET_EFAULT;
4455 break;
4456 case IPC_RMID:
4457 case SHM_LOCK:
4458 case SHM_UNLOCK:
4459 ret = get_errno(shmctl(shmid, cmd, NULL));
4460 break;
4461 }
4462
4463 return ret;
4464 }
4465
4466 #ifndef TARGET_FORCE_SHMLBA
4467 /* For most architectures, SHMLBA is the same as the page size;
4468 * some architectures have larger values, in which case they should
4469 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4470 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4471 * and defining its own value for SHMLBA.
4472 *
4473 * The kernel also permits SHMLBA to be set by the architecture to a
4474 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4475 * this means that addresses are rounded to the large size if
4476 * SHM_RND is set but addresses not aligned to that size are not rejected
4477 * as long as they are at least page-aligned. Since the only architecture
4478 * which uses this is ia64 this code doesn't provide for that oddity.
4479 */
4480 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4481 {
4482 return TARGET_PAGE_SIZE;
4483 }
4484 #endif
4485
4486 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4487 int shmid, abi_ulong shmaddr, int shmflg)
4488 {
4489 CPUState *cpu = env_cpu(cpu_env);
4490 abi_long raddr;
4491 void *host_raddr;
4492 struct shmid_ds shm_info;
4493 int i,ret;
4494 abi_ulong shmlba;
4495
4496 /* shmat pointers are always untagged */
4497
4498 /* find out the length of the shared memory segment */
4499 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4500 if (is_error(ret)) {
4501 /* can't get length, bail out */
4502 return ret;
4503 }
4504
4505 shmlba = target_shmlba(cpu_env);
4506
4507 if (shmaddr & (shmlba - 1)) {
4508 if (shmflg & SHM_RND) {
4509 shmaddr &= ~(shmlba - 1);
4510 } else {
4511 return -TARGET_EINVAL;
4512 }
4513 }
4514 if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) {
4515 return -TARGET_EINVAL;
4516 }
4517
4518 mmap_lock();
4519
4520 /*
4521 * We're mapping shared memory, so ensure we generate code for parallel
4522 * execution and flush old translations. This will work up to the level
4523 * supported by the host -- anything that requires EXCP_ATOMIC will not
4524 * be atomic with respect to an external process.
4525 */
4526 if (!(cpu->tcg_cflags & CF_PARALLEL)) {
4527 cpu->tcg_cflags |= CF_PARALLEL;
4528 tb_flush(cpu);
4529 }
4530
4531 if (shmaddr)
4532 host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg);
4533 else {
4534 abi_ulong mmap_start;
4535
4536 /* In order to use the host shmat, we need to honor host SHMLBA. */
4537 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
4538
4539 if (mmap_start == -1) {
4540 errno = ENOMEM;
4541 host_raddr = (void *)-1;
4542 } else
4543 host_raddr = shmat(shmid, g2h_untagged(mmap_start),
4544 shmflg | SHM_REMAP);
4545 }
4546
4547 if (host_raddr == (void *)-1) {
4548 mmap_unlock();
4549 return get_errno((long)host_raddr);
4550 }
4551 raddr=h2g((unsigned long)host_raddr);
4552
4553 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4554 PAGE_VALID | PAGE_RESET | PAGE_READ |
4555 (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
4556
4557 for (i = 0; i < N_SHM_REGIONS; i++) {
4558 if (!shm_regions[i].in_use) {
4559 shm_regions[i].in_use = true;
4560 shm_regions[i].start = raddr;
4561 shm_regions[i].size = shm_info.shm_segsz;
4562 break;
4563 }
4564 }
4565
4566 mmap_unlock();
4567 return raddr;
4568
4569 }
4570
4571 static inline abi_long do_shmdt(abi_ulong shmaddr)
4572 {
4573 int i;
4574 abi_long rv;
4575
4576 /* shmdt pointers are always untagged */
4577
4578 mmap_lock();
4579
4580 for (i = 0; i < N_SHM_REGIONS; ++i) {
4581 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4582 shm_regions[i].in_use = false;
4583 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4584 break;
4585 }
4586 }
4587 rv = get_errno(shmdt(g2h_untagged(shmaddr)));
4588
4589 mmap_unlock();
4590
4591 return rv;
4592 }
4593
4594 #ifdef TARGET_NR_ipc
4595 /* ??? This only works with linear mappings. */
4596 /* do_ipc() must return target values and target errnos. */
4597 static abi_long do_ipc(CPUArchState *cpu_env,
4598 unsigned int call, abi_long first,
4599 abi_long second, abi_long third,
4600 abi_long ptr, abi_long fifth)
4601 {
4602 int version;
4603 abi_long ret = 0;
4604
4605 version = call >> 16;
4606 call &= 0xffff;
4607
4608 switch (call) {
4609 case IPCOP_semop:
4610 ret = do_semtimedop(first, ptr, second, 0, false);
4611 break;
4612 case IPCOP_semtimedop:
4613 /*
4614 * The s390 sys_ipc variant has only five parameters instead of six
4615 * (as for default variant) and the only difference is the handling of
4616 * SEMTIMEDOP where on s390 the third parameter is used as a pointer
4617 * to a struct timespec where the generic variant uses fifth parameter.
4618 */
4619 #if defined(TARGET_S390X)
4620 ret = do_semtimedop(first, ptr, second, third, TARGET_ABI_BITS == 64);
4621 #else
4622 ret = do_semtimedop(first, ptr, second, fifth, TARGET_ABI_BITS == 64);
4623 #endif
4624 break;
4625
4626 case IPCOP_semget:
4627 ret = get_errno(semget(first, second, third));
4628 break;
4629
4630 case IPCOP_semctl: {
4631 /* The semun argument to semctl is passed by value, so dereference the
4632 * ptr argument. */
4633 abi_ulong atptr;
4634 get_user_ual(atptr, ptr);
4635 ret = do_semctl(first, second, third, atptr);
4636 break;
4637 }
4638
4639 case IPCOP_msgget:
4640 ret = get_errno(msgget(first, second));
4641 break;
4642
4643 case IPCOP_msgsnd:
4644 ret = do_msgsnd(first, ptr, second, third);
4645 break;
4646
4647 case IPCOP_msgctl:
4648 ret = do_msgctl(first, second, ptr);
4649 break;
4650
4651 case IPCOP_msgrcv:
4652 switch (version) {
4653 case 0:
4654 {
4655 struct target_ipc_kludge {
4656 abi_long msgp;
4657 abi_long msgtyp;
4658 } *tmp;
4659
4660 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4661 ret = -TARGET_EFAULT;
4662 break;
4663 }
4664
4665 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4666
4667 unlock_user_struct(tmp, ptr, 0);
4668 break;
4669 }
4670 default:
4671 ret = do_msgrcv(first, ptr, second, fifth, third);
4672 }
4673 break;
4674
4675 case IPCOP_shmat:
4676 switch (version) {
4677 default:
4678 {
4679 abi_ulong raddr;
4680 raddr = do_shmat(cpu_env, first, ptr, second);
4681 if (is_error(raddr))
4682 return get_errno(raddr);
4683 if (put_user_ual(raddr, third))
4684 return -TARGET_EFAULT;
4685 break;
4686 }
4687 case 1:
4688 ret = -TARGET_EINVAL;
4689 break;
4690 }
4691 break;
4692 case IPCOP_shmdt:
4693 ret = do_shmdt(ptr);
4694 break;
4695
4696 case IPCOP_shmget:
4697 /* IPC_* flag values are the same on all linux platforms */
4698 ret = get_errno(shmget(first, second, third));
4699 break;
4700
4701 /* IPC_* and SHM_* command values are the same on all linux platforms */
4702 case IPCOP_shmctl:
4703 ret = do_shmctl(first, second, ptr);
4704 break;
4705 default:
4706 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
4707 call, version);
4708 ret = -TARGET_ENOSYS;
4709 break;
4710 }
4711 return ret;
4712 }
4713 #endif
4714
4715 /* kernel structure types definitions */
4716
4717 #define STRUCT(name, ...) STRUCT_ ## name,
4718 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4719 enum {
4720 #include "syscall_types.h"
4721 STRUCT_MAX
4722 };
4723 #undef STRUCT
4724 #undef STRUCT_SPECIAL
4725
4726 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4727 #define STRUCT_SPECIAL(name)
4728 #include "syscall_types.h"
4729 #undef STRUCT
4730 #undef STRUCT_SPECIAL
4731
4732 #define MAX_STRUCT_SIZE 4096
4733
4734 #ifdef CONFIG_FIEMAP
4735 /* So fiemap access checks don't overflow on 32 bit systems.
4736 * This is very slightly smaller than the limit imposed by
4737 * the underlying kernel.
4738 */
4739 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4740 / sizeof(struct fiemap_extent))
4741
4742 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4743 int fd, int cmd, abi_long arg)
4744 {
4745 /* The parameter for this ioctl is a struct fiemap followed
4746 * by an array of struct fiemap_extent whose size is set
4747 * in fiemap->fm_extent_count. The array is filled in by the
4748 * ioctl.
4749 */
4750 int target_size_in, target_size_out;
4751 struct fiemap *fm;
4752 const argtype *arg_type = ie->arg_type;
4753 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4754 void *argptr, *p;
4755 abi_long ret;
4756 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4757 uint32_t outbufsz;
4758 int free_fm = 0;
4759
4760 assert(arg_type[0] == TYPE_PTR);
4761 assert(ie->access == IOC_RW);
4762 arg_type++;
4763 target_size_in = thunk_type_size(arg_type, 0);
4764 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4765 if (!argptr) {
4766 return -TARGET_EFAULT;
4767 }
4768 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4769 unlock_user(argptr, arg, 0);
4770 fm = (struct fiemap *)buf_temp;
4771 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4772 return -TARGET_EINVAL;
4773 }
4774
4775 outbufsz = sizeof (*fm) +
4776 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4777
4778 if (outbufsz > MAX_STRUCT_SIZE) {
4779 /* We can't fit all the extents into the fixed size buffer.
4780 * Allocate one that is large enough and use it instead.
4781 */
4782 fm = g_try_malloc(outbufsz);
4783 if (!fm) {
4784 return -TARGET_ENOMEM;
4785 }
4786 memcpy(fm, buf_temp, sizeof(struct fiemap));
4787 free_fm = 1;
4788 }
4789 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4790 if (!is_error(ret)) {
4791 target_size_out = target_size_in;
4792 /* An extent_count of 0 means we were only counting the extents
4793 * so there are no structs to copy
4794 */
4795 if (fm->fm_extent_count != 0) {
4796 target_size_out += fm->fm_mapped_extents * extent_size;
4797 }
4798 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4799 if (!argptr) {
4800 ret = -TARGET_EFAULT;
4801 } else {
4802 /* Convert the struct fiemap */
4803 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4804 if (fm->fm_extent_count != 0) {
4805 p = argptr + target_size_in;
4806 /* ...and then all the struct fiemap_extents */
4807 for (i = 0; i < fm->fm_mapped_extents; i++) {
4808 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4809 THUNK_TARGET);
4810 p += extent_size;
4811 }
4812 }
4813 unlock_user(argptr, arg, target_size_out);
4814 }
4815 }
4816 if (free_fm) {
4817 g_free(fm);
4818 }
4819 return ret;
4820 }
4821 #endif
4822
4823 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4824 int fd, int cmd, abi_long arg)
4825 {
4826 const argtype *arg_type = ie->arg_type;
4827 int target_size;
4828 void *argptr;
4829 int ret;
4830 struct ifconf *host_ifconf;
4831 uint32_t outbufsz;
4832 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4833 const argtype ifreq_max_type[] = { MK_STRUCT(STRUCT_ifmap_ifreq) };
4834 int target_ifreq_size;
4835 int nb_ifreq;
4836 int free_buf = 0;
4837 int i;
4838 int target_ifc_len;
4839 abi_long target_ifc_buf;
4840 int host_ifc_len;
4841 char *host_ifc_buf;
4842
4843 assert(arg_type[0] == TYPE_PTR);
4844 assert(ie->access == IOC_RW);
4845
4846 arg_type++;
4847 target_size = thunk_type_size(arg_type, 0);
4848
4849 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4850 if (!argptr)
4851 return -TARGET_EFAULT;
4852 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4853 unlock_user(argptr, arg, 0);
4854
4855 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4856 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4857 target_ifreq_size = thunk_type_size(ifreq_max_type, 0);
4858
4859 if (target_ifc_buf != 0) {
4860 target_ifc_len = host_ifconf->ifc_len;
4861 nb_ifreq = target_ifc_len / target_ifreq_size;
4862 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4863
4864 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4865 if (outbufsz > MAX_STRUCT_SIZE) {
4866 /*
4867 * We can't fit all the extents into the fixed size buffer.
4868 * Allocate one that is large enough and use it instead.
4869 */
4870 host_ifconf = malloc(outbufsz);
4871 if (!host_ifconf) {
4872 return -TARGET_ENOMEM;
4873 }
4874 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4875 free_buf = 1;
4876 }
4877 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4878
4879 host_ifconf->ifc_len = host_ifc_len;
4880 } else {
4881 host_ifc_buf = NULL;
4882 }
4883 host_ifconf->ifc_buf = host_ifc_buf;
4884
4885 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4886 if (!is_error(ret)) {
4887 /* convert host ifc_len to target ifc_len */
4888
4889 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4890 target_ifc_len = nb_ifreq * target_ifreq_size;
4891 host_ifconf->ifc_len = target_ifc_len;
4892
4893 /* restore target ifc_buf */
4894
4895 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4896
4897 /* copy struct ifconf to target user */
4898
4899 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4900 if (!argptr)
4901 return -TARGET_EFAULT;
4902 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4903 unlock_user(argptr, arg, target_size);
4904
4905 if (target_ifc_buf != 0) {
4906 /* copy ifreq[] to target user */
4907 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4908 for (i = 0; i < nb_ifreq ; i++) {
4909 thunk_convert(argptr + i * target_ifreq_size,
4910 host_ifc_buf + i * sizeof(struct ifreq),
4911 ifreq_arg_type, THUNK_TARGET);
4912 }
4913 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4914 }
4915 }
4916
4917 if (free_buf) {
4918 free(host_ifconf);
4919 }
4920
4921 return ret;
4922 }
4923
4924 #if defined(CONFIG_USBFS)
4925 #if HOST_LONG_BITS > 64
4926 #error USBDEVFS thunks do not support >64 bit hosts yet.
4927 #endif
4928 struct live_urb {
4929 uint64_t target_urb_adr;
4930 uint64_t target_buf_adr;
4931 char *target_buf_ptr;
4932 struct usbdevfs_urb host_urb;
4933 };
4934
4935 static GHashTable *usbdevfs_urb_hashtable(void)
4936 {
4937 static GHashTable *urb_hashtable;
4938
4939 if (!urb_hashtable) {
4940 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4941 }
4942 return urb_hashtable;
4943 }
4944
4945 static void urb_hashtable_insert(struct live_urb *urb)
4946 {
4947 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4948 g_hash_table_insert(urb_hashtable, urb, urb);
4949 }
4950
4951 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4952 {
4953 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4954 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
4955 }
4956
4957 static void urb_hashtable_remove(struct live_urb *urb)
4958 {
4959 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4960 g_hash_table_remove(urb_hashtable, urb);
4961 }
4962
4963 static abi_long
4964 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
4965 int fd, int cmd, abi_long arg)
4966 {
4967 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
4968 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
4969 struct live_urb *lurb;
4970 void *argptr;
4971 uint64_t hurb;
4972 int target_size;
4973 uintptr_t target_urb_adr;
4974 abi_long ret;
4975
4976 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
4977
4978 memset(buf_temp, 0, sizeof(uint64_t));
4979 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4980 if (is_error(ret)) {
4981 return ret;
4982 }
4983
4984 memcpy(&hurb, buf_temp, sizeof(uint64_t));
4985 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
4986 if (!lurb->target_urb_adr) {
4987 return -TARGET_EFAULT;
4988 }
4989 urb_hashtable_remove(lurb);
4990 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
4991 lurb->host_urb.buffer_length);
4992 lurb->target_buf_ptr = NULL;
4993
4994 /* restore the guest buffer pointer */
4995 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
4996
4997 /* update the guest urb struct */
4998 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
4999 if (!argptr) {
5000 g_free(lurb);
5001 return -TARGET_EFAULT;
5002 }
5003 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
5004 unlock_user(argptr, lurb->target_urb_adr, target_size);
5005
5006 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
5007 /* write back the urb handle */
5008 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5009 if (!argptr) {
5010 g_free(lurb);
5011 return -TARGET_EFAULT;
5012 }
5013
5014 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
5015 target_urb_adr = lurb->target_urb_adr;
5016 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
5017 unlock_user(argptr, arg, target_size);
5018
5019 g_free(lurb);
5020 return ret;
5021 }
5022
5023 static abi_long
5024 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
5025 uint8_t *buf_temp __attribute__((unused)),
5026 int fd, int cmd, abi_long arg)
5027 {
5028 struct live_urb *lurb;
5029
5030 /* map target address back to host URB with metadata. */
5031 lurb = urb_hashtable_lookup(arg);
5032 if (!lurb) {
5033 return -TARGET_EFAULT;
5034 }
5035 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5036 }
5037
5038 static abi_long
5039 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
5040 int fd, int cmd, abi_long arg)
5041 {
5042 const argtype *arg_type = ie->arg_type;
5043 int target_size;
5044 abi_long ret;
5045 void *argptr;
5046 int rw_dir;
5047 struct live_urb *lurb;
5048
5049 /*
5050 * each submitted URB needs to map to a unique ID for the
5051 * kernel, and that unique ID needs to be a pointer to
5052 * host memory. hence, we need to malloc for each URB.
5053 * isochronous transfers have a variable length struct.
5054 */
5055 arg_type++;
5056 target_size = thunk_type_size(arg_type, THUNK_TARGET);
5057
5058 /* construct host copy of urb and metadata */
5059 lurb = g_try_malloc0(sizeof(struct live_urb));
5060 if (!lurb) {
5061 return -TARGET_ENOMEM;
5062 }
5063
5064 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5065 if (!argptr) {
5066 g_free(lurb);
5067 return -TARGET_EFAULT;
5068 }
5069 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
5070 unlock_user(argptr, arg, 0);
5071
5072 lurb->target_urb_adr = arg;
5073 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
5074
5075 /* buffer space used depends on endpoint type so lock the entire buffer */
5076 /* control type urbs should check the buffer contents for true direction */
5077 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
5078 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
5079 lurb->host_urb.buffer_length, 1);
5080 if (lurb->target_buf_ptr == NULL) {
5081 g_free(lurb);
5082 return -TARGET_EFAULT;
5083 }
5084
5085 /* update buffer pointer in host copy */
5086 lurb->host_urb.buffer = lurb->target_buf_ptr;
5087
5088 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
5089 if (is_error(ret)) {
5090 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
5091 g_free(lurb);
5092 } else {
5093 urb_hashtable_insert(lurb);
5094 }
5095
5096 return ret;
5097 }
5098 #endif /* CONFIG_USBFS */
5099
5100 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5101 int cmd, abi_long arg)
5102 {
5103 void *argptr;
5104 struct dm_ioctl *host_dm;
5105 abi_long guest_data;
5106 uint32_t guest_data_size;
5107 int target_size;
5108 const argtype *arg_type = ie->arg_type;
5109 abi_long ret;
5110 void *big_buf = NULL;
5111 char *host_data;
5112
5113 arg_type++;
5114 target_size = thunk_type_size(arg_type, 0);
5115 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5116 if (!argptr) {
5117 ret = -TARGET_EFAULT;
5118 goto out;
5119 }
5120 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5121 unlock_user(argptr, arg, 0);
5122
5123 /* buf_temp is too small, so fetch things into a bigger buffer */
5124 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
5125 memcpy(big_buf, buf_temp, target_size);
5126 buf_temp = big_buf;
5127 host_dm = big_buf;
5128
5129 guest_data = arg + host_dm->data_start;
5130 if ((guest_data - arg) < 0) {
5131 ret = -TARGET_EINVAL;
5132 goto out;
5133 }
5134 guest_data_size = host_dm->data_size - host_dm->data_start;
5135 host_data = (char*)host_dm + host_dm->data_start;
5136
5137 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
5138 if (!argptr) {
5139 ret = -TARGET_EFAULT;
5140 goto out;
5141 }
5142
5143 switch (ie->host_cmd) {
5144 case DM_REMOVE_ALL:
5145 case DM_LIST_DEVICES:
5146 case DM_DEV_CREATE:
5147 case DM_DEV_REMOVE:
5148 case DM_DEV_SUSPEND:
5149 case DM_DEV_STATUS:
5150 case DM_DEV_WAIT:
5151 case DM_TABLE_STATUS:
5152 case DM_TABLE_CLEAR:
5153 case DM_TABLE_DEPS:
5154 case DM_LIST_VERSIONS:
5155 /* no input data */
5156 break;
5157 case DM_DEV_RENAME:
5158 case DM_DEV_SET_GEOMETRY:
5159 /* data contains only strings */
5160 memcpy(host_data, argptr, guest_data_size);
5161 break;
5162 case DM_TARGET_MSG:
5163 memcpy(host_data, argptr, guest_data_size);
5164 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
5165 break;
5166 case DM_TABLE_LOAD:
5167 {
5168 void *gspec = argptr;
5169 void *cur_data = host_data;
5170 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5171 int spec_size = thunk_type_size(arg_type, 0);
5172 int i;
5173
5174 for (i = 0; i < host_dm->target_count; i++) {
5175 struct dm_target_spec *spec = cur_data;
5176 uint32_t next;
5177 int slen;
5178
5179 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
5180 slen = strlen((char*)gspec + spec_size) + 1;
5181 next = spec->next;
5182 spec->next = sizeof(*spec) + slen;
5183 strcpy((char*)&spec[1], gspec + spec_size);
5184 gspec += next;
5185 cur_data += spec->next;
5186 }
5187 break;
5188 }
5189 default:
5190 ret = -TARGET_EINVAL;
5191 unlock_user(argptr, guest_data, 0);
5192 goto out;
5193 }
5194 unlock_user(argptr, guest_data, 0);
5195
5196 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5197 if (!is_error(ret)) {
5198 guest_data = arg + host_dm->data_start;
5199 guest_data_size = host_dm->data_size - host_dm->data_start;
5200 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
5201 switch (ie->host_cmd) {
5202 case DM_REMOVE_ALL:
5203 case DM_DEV_CREATE:
5204 case DM_DEV_REMOVE:
5205 case DM_DEV_RENAME:
5206 case DM_DEV_SUSPEND:
5207 case DM_DEV_STATUS:
5208 case DM_TABLE_LOAD:
5209 case DM_TABLE_CLEAR:
5210 case DM_TARGET_MSG:
5211 case DM_DEV_SET_GEOMETRY:
5212 /* no return data */
5213 break;
5214 case DM_LIST_DEVICES:
5215 {
5216 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
5217 uint32_t remaining_data = guest_data_size;
5218 void *cur_data = argptr;
5219 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
5220 int nl_size = 12; /* can't use thunk_size due to alignment */
5221
5222 while (1) {
5223 uint32_t next = nl->next;
5224 if (next) {
5225 nl->next = nl_size + (strlen(nl->name) + 1);
5226 }
5227 if (remaining_data < nl->next) {
5228 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5229 break;
5230 }
5231 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
5232 strcpy(cur_data + nl_size, nl->name);
5233 cur_data += nl->next;
5234 remaining_data -= nl->next;
5235 if (!next) {
5236 break;
5237 }
5238 nl = (void*)nl + next;
5239 }
5240 break;
5241 }
5242 case DM_DEV_WAIT:
5243 case DM_TABLE_STATUS:
5244 {
5245 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5246 void *cur_data = argptr;
5247 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5248 int spec_size = thunk_type_size(arg_type, 0);
5249 int i;
5250
5251 for (i = 0; i < host_dm->target_count; i++) {
5252 uint32_t next = spec->next;
5253 int slen = strlen((char*)&spec[1]) + 1;
5254 spec->next = (cur_data - argptr) + spec_size + slen;
5255 if (guest_data_size < spec->next) {
5256 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5257 break;
5258 }
5259 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5260 strcpy(cur_data + spec_size, (char*)&spec[1]);
5261 cur_data = argptr + spec->next;
5262 spec = (void*)host_dm + host_dm->data_start + next;
5263 }
5264 break;
5265 }
5266 case DM_TABLE_DEPS:
5267 {
5268 void *hdata = (void*)host_dm + host_dm->data_start;
5269 int count = *(uint32_t*)hdata;
5270 uint64_t *hdev = hdata + 8;
5271 uint64_t *gdev = argptr + 8;
5272 int i;
5273
5274 *(uint32_t*)argptr = tswap32(count);
5275 for (i = 0; i < count; i++) {
5276 *gdev = tswap64(*hdev);
5277 gdev++;
5278 hdev++;
5279 }
5280 break;
5281 }
5282 case DM_LIST_VERSIONS:
5283 {
5284 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5285 uint32_t remaining_data = guest_data_size;
5286 void *cur_data = argptr;
5287 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5288 int vers_size = thunk_type_size(arg_type, 0);
5289
5290 while (1) {
5291 uint32_t next = vers->next;
5292 if (next) {
5293 vers->next = vers_size + (strlen(vers->name) + 1);
5294 }
5295 if (remaining_data < vers->next) {
5296 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5297 break;
5298 }
5299 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5300 strcpy(cur_data + vers_size, vers->name);
5301 cur_data += vers->next;
5302 remaining_data -= vers->next;
5303 if (!next) {
5304 break;
5305 }
5306 vers = (void*)vers + next;
5307 }
5308 break;
5309 }
5310 default:
5311 unlock_user(argptr, guest_data, 0);
5312 ret = -TARGET_EINVAL;
5313 goto out;
5314 }
5315 unlock_user(argptr, guest_data, guest_data_size);
5316
5317 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5318 if (!argptr) {
5319 ret = -TARGET_EFAULT;
5320 goto out;
5321 }
5322 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5323 unlock_user(argptr, arg, target_size);
5324 }
5325 out:
5326 g_free(big_buf);
5327 return ret;
5328 }
5329
5330 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5331 int cmd, abi_long arg)
5332 {
5333 void *argptr;
5334 int target_size;
5335 const argtype *arg_type = ie->arg_type;
5336 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5337 abi_long ret;
5338
5339 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5340 struct blkpg_partition host_part;
5341
5342 /* Read and convert blkpg */
5343 arg_type++;
5344 target_size = thunk_type_size(arg_type, 0);
5345 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5346 if (!argptr) {
5347 ret = -TARGET_EFAULT;
5348 goto out;
5349 }
5350 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5351 unlock_user(argptr, arg, 0);
5352
5353 switch (host_blkpg->op) {
5354 case BLKPG_ADD_PARTITION:
5355 case BLKPG_DEL_PARTITION:
5356 /* payload is struct blkpg_partition */
5357 break;
5358 default:
5359 /* Unknown opcode */
5360 ret = -TARGET_EINVAL;
5361 goto out;
5362 }
5363
5364 /* Read and convert blkpg->data */
5365 arg = (abi_long)(uintptr_t)host_blkpg->data;
5366 target_size = thunk_type_size(part_arg_type, 0);
5367 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5368 if (!argptr) {
5369 ret = -TARGET_EFAULT;
5370 goto out;
5371 }
5372 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5373 unlock_user(argptr, arg, 0);
5374
5375 /* Swizzle the data pointer to our local copy and call! */
5376 host_blkpg->data = &host_part;
5377 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5378
5379 out:
5380 return ret;
5381 }
5382
5383 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5384 int fd, int cmd, abi_long arg)
5385 {
5386 const argtype *arg_type = ie->arg_type;
5387 const StructEntry *se;
5388 const argtype *field_types;
5389 const int *dst_offsets, *src_offsets;
5390 int target_size;
5391 void *argptr;
5392 abi_ulong *target_rt_dev_ptr = NULL;
5393 unsigned long *host_rt_dev_ptr = NULL;
5394 abi_long ret;
5395 int i;
5396
5397 assert(ie->access == IOC_W);
5398 assert(*arg_type == TYPE_PTR);
5399 arg_type++;
5400 assert(*arg_type == TYPE_STRUCT);
5401 target_size = thunk_type_size(arg_type, 0);
5402 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5403 if (!argptr) {
5404 return -TARGET_EFAULT;
5405 }
5406 arg_type++;
5407 assert(*arg_type == (int)STRUCT_rtentry);
5408 se = struct_entries + *arg_type++;
5409 assert(se->convert[0] == NULL);
5410 /* convert struct here to be able to catch rt_dev string */
5411 field_types = se->field_types;
5412 dst_offsets = se->field_offsets[THUNK_HOST];
5413 src_offsets = se->field_offsets[THUNK_TARGET];
5414 for (i = 0; i < se->nb_fields; i++) {
5415 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5416 assert(*field_types == TYPE_PTRVOID);
5417 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
5418 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5419 if (*target_rt_dev_ptr != 0) {
5420 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5421 tswapal(*target_rt_dev_ptr));
5422 if (!*host_rt_dev_ptr) {
5423 unlock_user(argptr, arg, 0);
5424 return -TARGET_EFAULT;
5425 }
5426 } else {
5427 *host_rt_dev_ptr = 0;
5428 }
5429 field_types++;
5430 continue;
5431 }
5432 field_types = thunk_convert(buf_temp + dst_offsets[i],
5433 argptr + src_offsets[i],
5434 field_types, THUNK_HOST);
5435 }
5436 unlock_user(argptr, arg, 0);
5437
5438 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5439
5440 assert(host_rt_dev_ptr != NULL);
5441 assert(target_rt_dev_ptr != NULL);
5442 if (*host_rt_dev_ptr != 0) {
5443 unlock_user((void *)*host_rt_dev_ptr,
5444 *target_rt_dev_ptr, 0);
5445 }
5446 return ret;
5447 }
5448
5449 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5450 int fd, int cmd, abi_long arg)
5451 {
5452 int sig = target_to_host_signal(arg);
5453 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5454 }
5455
5456 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
5457 int fd, int cmd, abi_long arg)
5458 {
5459 struct timeval tv;
5460 abi_long ret;
5461
5462 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
5463 if (is_error(ret)) {
5464 return ret;
5465 }
5466
5467 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
5468 if (copy_to_user_timeval(arg, &tv)) {
5469 return -TARGET_EFAULT;
5470 }
5471 } else {
5472 if (copy_to_user_timeval64(arg, &tv)) {
5473 return -TARGET_EFAULT;
5474 }
5475 }
5476
5477 return ret;
5478 }
5479
5480 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
5481 int fd, int cmd, abi_long arg)
5482 {
5483 struct timespec ts;
5484 abi_long ret;
5485
5486 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
5487 if (is_error(ret)) {
5488 return ret;
5489 }
5490
5491 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5492 if (host_to_target_timespec(arg, &ts)) {
5493 return -TARGET_EFAULT;
5494 }
5495 } else{
5496 if (host_to_target_timespec64(arg, &ts)) {
5497 return -TARGET_EFAULT;
5498 }
5499 }
5500
5501 return ret;
5502 }
5503
5504 #ifdef TIOCGPTPEER
5505 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5506 int fd, int cmd, abi_long arg)
5507 {
5508 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5509 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5510 }
5511 #endif
5512
5513 #ifdef HAVE_DRM_H
5514
5515 static void unlock_drm_version(struct drm_version *host_ver,
5516 struct target_drm_version *target_ver,
5517 bool copy)
5518 {
5519 unlock_user(host_ver->name, target_ver->name,
5520 copy ? host_ver->name_len : 0);
5521 unlock_user(host_ver->date, target_ver->date,
5522 copy ? host_ver->date_len : 0);
5523 unlock_user(host_ver->desc, target_ver->desc,
5524 copy ? host_ver->desc_len : 0);
5525 }
5526
5527 static inline abi_long target_to_host_drmversion(struct drm_version *host_ver,
5528 struct target_drm_version *target_ver)
5529 {
5530 memset(host_ver, 0, sizeof(*host_ver));
5531
5532 __get_user(host_ver->name_len, &target_ver->name_len);
5533 if (host_ver->name_len) {
5534 host_ver->name = lock_user(VERIFY_WRITE, target_ver->name,
5535 target_ver->name_len, 0);
5536 if (!host_ver->name) {
5537 return -EFAULT;
5538 }
5539 }
5540
5541 __get_user(host_ver->date_len, &target_ver->date_len);
5542 if (host_ver->date_len) {
5543 host_ver->date = lock_user(VERIFY_WRITE, target_ver->date,
5544 target_ver->date_len, 0);
5545 if (!host_ver->date) {
5546 goto err;
5547 }
5548 }
5549
5550 __get_user(host_ver->desc_len, &target_ver->desc_len);
5551 if (host_ver->desc_len) {
5552 host_ver->desc = lock_user(VERIFY_WRITE, target_ver->desc,
5553 target_ver->desc_len, 0);
5554 if (!host_ver->desc) {
5555 goto err;
5556 }
5557 }
5558
5559 return 0;
5560 err:
5561 unlock_drm_version(host_ver, target_ver, false);
5562 return -EFAULT;
5563 }
5564
5565 static inline void host_to_target_drmversion(
5566 struct target_drm_version *target_ver,
5567 struct drm_version *host_ver)
5568 {
5569 __put_user(host_ver->version_major, &target_ver->version_major);
5570 __put_user(host_ver->version_minor, &target_ver->version_minor);
5571 __put_user(host_ver->version_patchlevel, &target_ver->version_patchlevel);
5572 __put_user(host_ver->name_len, &target_ver->name_len);
5573 __put_user(host_ver->date_len, &target_ver->date_len);
5574 __put_user(host_ver->desc_len, &target_ver->desc_len);
5575 unlock_drm_version(host_ver, target_ver, true);
5576 }
5577
5578 static abi_long do_ioctl_drm(const IOCTLEntry *ie, uint8_t *buf_temp,
5579 int fd, int cmd, abi_long arg)
5580 {
5581 struct drm_version *ver;
5582 struct target_drm_version *target_ver;
5583 abi_long ret;
5584
5585 switch (ie->host_cmd) {
5586 case DRM_IOCTL_VERSION:
5587 if (!lock_user_struct(VERIFY_WRITE, target_ver, arg, 0)) {
5588 return -TARGET_EFAULT;
5589 }
5590 ver = (struct drm_version *)buf_temp;
5591 ret = target_to_host_drmversion(ver, target_ver);
5592 if (!is_error(ret)) {
5593 ret = get_errno(safe_ioctl(fd, ie->host_cmd, ver));
5594 if (is_error(ret)) {
5595 unlock_drm_version(ver, target_ver, false);
5596 } else {
5597 host_to_target_drmversion(target_ver, ver);
5598 }
5599 }
5600 unlock_user_struct(target_ver, arg, 0);
5601 return ret;
5602 }
5603 return -TARGET_ENOSYS;
5604 }
5605
5606 static abi_long do_ioctl_drm_i915_getparam(const IOCTLEntry *ie,
5607 struct drm_i915_getparam *gparam,
5608 int fd, abi_long arg)
5609 {
5610 abi_long ret;
5611 int value;
5612 struct target_drm_i915_getparam *target_gparam;
5613
5614 if (!lock_user_struct(VERIFY_READ, target_gparam, arg, 0)) {
5615 return -TARGET_EFAULT;
5616 }
5617
5618 __get_user(gparam->param, &target_gparam->param);
5619 gparam->value = &value;
5620 ret = get_errno(safe_ioctl(fd, ie->host_cmd, gparam));
5621 put_user_s32(value, target_gparam->value);
5622
5623 unlock_user_struct(target_gparam, arg, 0);
5624 return ret;
5625 }
5626
5627 static abi_long do_ioctl_drm_i915(const IOCTLEntry *ie, uint8_t *buf_temp,
5628 int fd, int cmd, abi_long arg)
5629 {
5630 switch (ie->host_cmd) {
5631 case DRM_IOCTL_I915_GETPARAM:
5632 return do_ioctl_drm_i915_getparam(ie,
5633 (struct drm_i915_getparam *)buf_temp,
5634 fd, arg);
5635 default:
5636 return -TARGET_ENOSYS;
5637 }
5638 }
5639
5640 #endif
5641
5642 static abi_long do_ioctl_TUNSETTXFILTER(const IOCTLEntry *ie, uint8_t *buf_temp,
5643 int fd, int cmd, abi_long arg)
5644 {
5645 struct tun_filter *filter = (struct tun_filter *)buf_temp;
5646 struct tun_filter *target_filter;
5647 char *target_addr;
5648
5649 assert(ie->access == IOC_W);
5650
5651 target_filter = lock_user(VERIFY_READ, arg, sizeof(*target_filter), 1);
5652 if (!target_filter) {
5653 return -TARGET_EFAULT;
5654 }
5655 filter->flags = tswap16(target_filter->flags);
5656 filter->count = tswap16(target_filter->count);
5657 unlock_user(target_filter, arg, 0);
5658
5659 if (filter->count) {
5660 if (offsetof(struct tun_filter, addr) + filter->count * ETH_ALEN >
5661 MAX_STRUCT_SIZE) {
5662 return -TARGET_EFAULT;
5663 }
5664
5665 target_addr = lock_user(VERIFY_READ,
5666 arg + offsetof(struct tun_filter, addr),
5667 filter->count * ETH_ALEN, 1);
5668 if (!target_addr) {
5669 return -TARGET_EFAULT;
5670 }
5671 memcpy(filter->addr, target_addr, filter->count * ETH_ALEN);
5672 unlock_user(target_addr, arg + offsetof(struct tun_filter, addr), 0);
5673 }
5674
5675 return get_errno(safe_ioctl(fd, ie->host_cmd, filter));
5676 }
5677
5678 IOCTLEntry ioctl_entries[] = {
5679 #define IOCTL(cmd, access, ...) \
5680 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5681 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5682 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5683 #define IOCTL_IGNORE(cmd) \
5684 { TARGET_ ## cmd, 0, #cmd },
5685 #include "ioctls.h"
5686 { 0, 0, },
5687 };
5688
5689 /* ??? Implement proper locking for ioctls. */
5690 /* do_ioctl() Must return target values and target errnos. */
5691 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5692 {
5693 const IOCTLEntry *ie;
5694 const argtype *arg_type;
5695 abi_long ret;
5696 uint8_t buf_temp[MAX_STRUCT_SIZE];
5697 int target_size;
5698 void *argptr;
5699
5700 ie = ioctl_entries;
5701 for(;;) {
5702 if (ie->target_cmd == 0) {
5703 qemu_log_mask(
5704 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5705 return -TARGET_ENOSYS;
5706 }
5707 if (ie->target_cmd == cmd)
5708 break;
5709 ie++;
5710 }
5711 arg_type = ie->arg_type;
5712 if (ie->do_ioctl) {
5713 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5714 } else if (!ie->host_cmd) {
5715 /* Some architectures define BSD ioctls in their headers
5716 that are not implemented in Linux. */
5717 return -TARGET_ENOSYS;
5718 }
5719
5720 switch(arg_type[0]) {
5721 case TYPE_NULL:
5722 /* no argument */
5723 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5724 break;
5725 case TYPE_PTRVOID:
5726 case TYPE_INT:
5727 case TYPE_LONG:
5728 case TYPE_ULONG:
5729 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5730 break;
5731 case TYPE_PTR:
5732 arg_type++;
5733 target_size = thunk_type_size(arg_type, 0);
5734 switch(ie->access) {
5735 case IOC_R:
5736 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5737 if (!is_error(ret)) {
5738 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5739 if (!argptr)
5740 return -TARGET_EFAULT;
5741 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5742 unlock_user(argptr, arg, target_size);
5743 }
5744 break;
5745 case IOC_W:
5746 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5747 if (!argptr)
5748 return -TARGET_EFAULT;
5749 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5750 unlock_user(argptr, arg, 0);
5751 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5752 break;
5753 default:
5754 case IOC_RW:
5755 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5756 if (!argptr)
5757 return -TARGET_EFAULT;
5758 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5759 unlock_user(argptr, arg, 0);
5760 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5761 if (!is_error(ret)) {
5762 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5763 if (!argptr)
5764 return -TARGET_EFAULT;
5765 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5766 unlock_user(argptr, arg, target_size);
5767 }
5768 break;
5769 }
5770 break;
5771 default:
5772 qemu_log_mask(LOG_UNIMP,
5773 "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5774 (long)cmd, arg_type[0]);
5775 ret = -TARGET_ENOSYS;
5776 break;
5777 }
5778 return ret;
5779 }
5780
5781 static const bitmask_transtbl iflag_tbl[] = {
5782 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5783 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5784 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5785 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5786 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5787 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5788 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5789 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5790 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5791 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5792 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5793 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5794 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5795 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5796 { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
5797 { 0, 0, 0, 0 }
5798 };
5799
5800 static const bitmask_transtbl oflag_tbl[] = {
5801 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5802 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5803 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5804 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5805 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5806 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5807 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5808 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5809 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5810 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5811 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5812 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5813 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5814 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5815 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5816 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5817 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5818 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5819 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5820 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5821 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5822 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5823 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5824 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5825 { 0, 0, 0, 0 }
5826 };
5827
5828 static const bitmask_transtbl cflag_tbl[] = {
5829 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5830 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5831 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5832 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5833 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5834 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5835 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5836 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5837 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5838 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5839 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5840 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5841 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5842 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5843 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5844 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5845 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5846 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5847 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5848 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5849 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5850 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5851 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5852 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5853 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5854 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5855 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5856 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5857 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5858 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5859 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5860 { 0, 0, 0, 0 }
5861 };
5862
5863 static const bitmask_transtbl lflag_tbl[] = {
5864 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5865 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5866 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5867 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5868 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5869 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5870 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5871 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5872 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5873 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5874 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5875 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5876 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5877 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5878 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5879 { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
5880 { 0, 0, 0, 0 }
5881 };
5882
5883 static void target_to_host_termios (void *dst, const void *src)
5884 {
5885 struct host_termios *host = dst;
5886 const struct target_termios *target = src;
5887
5888 host->c_iflag =
5889 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5890 host->c_oflag =
5891 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5892 host->c_cflag =
5893 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5894 host->c_lflag =
5895 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5896 host->c_line = target->c_line;
5897
5898 memset(host->c_cc, 0, sizeof(host->c_cc));
5899 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5900 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5901 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5902 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5903 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5904 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5905 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5906 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5907 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5908 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5909 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5910 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5911 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5912 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5913 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5914 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5915 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5916 }
5917
5918 static void host_to_target_termios (void *dst, const void *src)
5919 {
5920 struct target_termios *target = dst;
5921 const struct host_termios *host = src;
5922
5923 target->c_iflag =
5924 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5925 target->c_oflag =
5926 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5927 target->c_cflag =
5928 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5929 target->c_lflag =
5930 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5931 target->c_line = host->c_line;
5932
5933 memset(target->c_cc, 0, sizeof(target->c_cc));
5934 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5935 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5936 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5937 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5938 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5939 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5940 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5941 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5942 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5943 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5944 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5945 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5946 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5947 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5948 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5949 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5950 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5951 }
5952
5953 static const StructEntry struct_termios_def = {
5954 .convert = { host_to_target_termios, target_to_host_termios },
5955 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5956 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5957 .print = print_termios,
5958 };
5959
5960 static const bitmask_transtbl mmap_flags_tbl[] = {
5961 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5962 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5963 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5964 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5965 MAP_ANONYMOUS, MAP_ANONYMOUS },
5966 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5967 MAP_GROWSDOWN, MAP_GROWSDOWN },
5968 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5969 MAP_DENYWRITE, MAP_DENYWRITE },
5970 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5971 MAP_EXECUTABLE, MAP_EXECUTABLE },
5972 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5973 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
5974 MAP_NORESERVE, MAP_NORESERVE },
5975 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
5976 /* MAP_STACK had been ignored by the kernel for quite some time.
5977 Recognize it for the target insofar as we do not want to pass
5978 it through to the host. */
5979 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
5980 { 0, 0, 0, 0 }
5981 };
5982
5983 /*
5984 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
5985 * TARGET_I386 is defined if TARGET_X86_64 is defined
5986 */
5987 #if defined(TARGET_I386)
5988
5989 /* NOTE: there is really one LDT for all the threads */
5990 static uint8_t *ldt_table;
5991
5992 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5993 {
5994 int size;
5995 void *p;
5996
5997 if (!ldt_table)
5998 return 0;
5999 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
6000 if (size > bytecount)
6001 size = bytecount;
6002 p = lock_user(VERIFY_WRITE, ptr, size, 0);
6003 if (!p)
6004 return -TARGET_EFAULT;
6005 /* ??? Should this by byteswapped? */
6006 memcpy(p, ldt_table, size);
6007 unlock_user(p, ptr, size);
6008 return size;
6009 }
6010
6011 /* XXX: add locking support */
6012 static abi_long write_ldt(CPUX86State *env,
6013 abi_ulong ptr, unsigned long bytecount, int oldmode)
6014 {
6015 struct target_modify_ldt_ldt_s ldt_info;
6016 struct target_modify_ldt_ldt_s *target_ldt_info;
6017 int seg_32bit, contents, read_exec_only, limit_in_pages;
6018 int seg_not_present, useable, lm;
6019 uint32_t *lp, entry_1, entry_2;
6020
6021 if (bytecount != sizeof(ldt_info))
6022 return -TARGET_EINVAL;
6023 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
6024 return -TARGET_EFAULT;
6025 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6026 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6027 ldt_info.limit = tswap32(target_ldt_info->limit);
6028 ldt_info.flags = tswap32(target_ldt_info->flags);
6029 unlock_user_struct(target_ldt_info, ptr, 0);
6030
6031 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
6032 return -TARGET_EINVAL;
6033 seg_32bit = ldt_info.flags & 1;
6034 contents = (ldt_info.flags >> 1) & 3;
6035 read_exec_only = (ldt_info.flags >> 3) & 1;
6036 limit_in_pages = (ldt_info.flags >> 4) & 1;
6037 seg_not_present = (ldt_info.flags >> 5) & 1;
6038 useable = (ldt_info.flags >> 6) & 1;
6039 #ifdef TARGET_ABI32
6040 lm = 0;
6041 #else
6042 lm = (ldt_info.flags >> 7) & 1;
6043 #endif
6044 if (contents == 3) {
6045 if (oldmode)
6046 return -TARGET_EINVAL;
6047 if (seg_not_present == 0)
6048 return -TARGET_EINVAL;
6049 }
6050 /* allocate the LDT */
6051 if (!ldt_table) {
6052 env->ldt.base = target_mmap(0,
6053 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
6054 PROT_READ|PROT_WRITE,
6055 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
6056 if (env->ldt.base == -1)
6057 return -TARGET_ENOMEM;
6058 memset(g2h_untagged(env->ldt.base), 0,
6059 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
6060 env->ldt.limit = 0xffff;
6061 ldt_table = g2h_untagged(env->ldt.base);
6062 }
6063
6064 /* NOTE: same code as Linux kernel */
6065 /* Allow LDTs to be cleared by the user. */
6066 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6067 if (oldmode ||
6068 (contents == 0 &&
6069 read_exec_only == 1 &&
6070 seg_32bit == 0 &&
6071 limit_in_pages == 0 &&
6072 seg_not_present == 1 &&
6073 useable == 0 )) {
6074 entry_1 = 0;
6075 entry_2 = 0;
6076 goto install;
6077 }
6078 }
6079
6080 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6081 (ldt_info.limit & 0x0ffff);
6082 entry_2 = (ldt_info.base_addr & 0xff000000) |
6083 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6084 (ldt_info.limit & 0xf0000) |
6085 ((read_exec_only ^ 1) << 9) |
6086 (contents << 10) |
6087 ((seg_not_present ^ 1) << 15) |
6088 (seg_32bit << 22) |
6089 (limit_in_pages << 23) |
6090 (lm << 21) |
6091 0x7000;
6092 if (!oldmode)
6093 entry_2 |= (useable << 20);
6094
6095 /* Install the new entry ... */
6096 install:
6097 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
6098 lp[0] = tswap32(entry_1);
6099 lp[1] = tswap32(entry_2);
6100 return 0;
6101 }
6102
6103 /* specific and weird i386 syscalls */
6104 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
6105 unsigned long bytecount)
6106 {
6107 abi_long ret;
6108
6109 switch (func) {
6110 case 0:
6111 ret = read_ldt(ptr, bytecount);
6112 break;
6113 case 1:
6114 ret = write_ldt(env, ptr, bytecount, 1);
6115 break;
6116 case 0x11:
6117 ret = write_ldt(env, ptr, bytecount, 0);
6118 break;
6119 default:
6120 ret = -TARGET_ENOSYS;
6121 break;
6122 }
6123 return ret;
6124 }
6125
6126 #if defined(TARGET_ABI32)
6127 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
6128 {
6129 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6130 struct target_modify_ldt_ldt_s ldt_info;
6131 struct target_modify_ldt_ldt_s *target_ldt_info;
6132 int seg_32bit, contents, read_exec_only, limit_in_pages;
6133 int seg_not_present, useable, lm;
6134 uint32_t *lp, entry_1, entry_2;
6135 int i;
6136
6137 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6138 if (!target_ldt_info)
6139 return -TARGET_EFAULT;
6140 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
6141 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
6142 ldt_info.limit = tswap32(target_ldt_info->limit);
6143 ldt_info.flags = tswap32(target_ldt_info->flags);
6144 if (ldt_info.entry_number == -1) {
6145 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
6146 if (gdt_table[i] == 0) {
6147 ldt_info.entry_number = i;
6148 target_ldt_info->entry_number = tswap32(i);
6149 break;
6150 }
6151 }
6152 }
6153 unlock_user_struct(target_ldt_info, ptr, 1);
6154
6155 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
6156 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
6157 return -TARGET_EINVAL;
6158 seg_32bit = ldt_info.flags & 1;
6159 contents = (ldt_info.flags >> 1) & 3;
6160 read_exec_only = (ldt_info.flags >> 3) & 1;
6161 limit_in_pages = (ldt_info.flags >> 4) & 1;
6162 seg_not_present = (ldt_info.flags >> 5) & 1;
6163 useable = (ldt_info.flags >> 6) & 1;
6164 #ifdef TARGET_ABI32
6165 lm = 0;
6166 #else
6167 lm = (ldt_info.flags >> 7) & 1;
6168 #endif
6169
6170 if (contents == 3) {
6171 if (seg_not_present == 0)
6172 return -TARGET_EINVAL;
6173 }
6174
6175 /* NOTE: same code as Linux kernel */
6176 /* Allow LDTs to be cleared by the user. */
6177 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
6178 if ((contents == 0 &&
6179 read_exec_only == 1 &&
6180 seg_32bit == 0 &&
6181 limit_in_pages == 0 &&
6182 seg_not_present == 1 &&
6183 useable == 0 )) {
6184 entry_1 = 0;
6185 entry_2 = 0;
6186 goto install;
6187 }
6188 }
6189
6190 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
6191 (ldt_info.limit & 0x0ffff);
6192 entry_2 = (ldt_info.base_addr & 0xff000000) |
6193 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
6194 (ldt_info.limit & 0xf0000) |
6195 ((read_exec_only ^ 1) << 9) |
6196 (contents << 10) |
6197 ((seg_not_present ^ 1) << 15) |
6198 (seg_32bit << 22) |
6199 (limit_in_pages << 23) |
6200 (useable << 20) |
6201 (lm << 21) |
6202 0x7000;
6203
6204 /* Install the new entry ... */
6205 install:
6206 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
6207 lp[0] = tswap32(entry_1);
6208 lp[1] = tswap32(entry_2);
6209 return 0;
6210 }
6211
6212 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
6213 {
6214 struct target_modify_ldt_ldt_s *target_ldt_info;
6215 uint64_t *gdt_table = g2h_untagged(env->gdt.base);
6216 uint32_t base_addr, limit, flags;
6217 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
6218 int seg_not_present, useable, lm;
6219 uint32_t *lp, entry_1, entry_2;
6220
6221 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
6222 if (!target_ldt_info)
6223 return -TARGET_EFAULT;
6224 idx = tswap32(target_ldt_info->entry_number);
6225 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
6226 idx > TARGET_GDT_ENTRY_TLS_MAX) {
6227 unlock_user_struct(target_ldt_info, ptr, 1);
6228 return -TARGET_EINVAL;
6229 }
6230 lp = (uint32_t *)(gdt_table + idx);
6231 entry_1 = tswap32(lp[0]);
6232 entry_2 = tswap32(lp[1]);
6233
6234 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
6235 contents = (entry_2 >> 10) & 3;
6236 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
6237 seg_32bit = (entry_2 >> 22) & 1;
6238 limit_in_pages = (entry_2 >> 23) & 1;
6239 useable = (entry_2 >> 20) & 1;
6240 #ifdef TARGET_ABI32
6241 lm = 0;
6242 #else
6243 lm = (entry_2 >> 21) & 1;
6244 #endif
6245 flags = (seg_32bit << 0) | (contents << 1) |
6246 (read_exec_only << 3) | (limit_in_pages << 4) |
6247 (seg_not_present << 5) | (useable << 6) | (lm << 7);
6248 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
6249 base_addr = (entry_1 >> 16) |
6250 (entry_2 & 0xff000000) |
6251 ((entry_2 & 0xff) << 16);
6252 target_ldt_info->base_addr = tswapal(base_addr);
6253 target_ldt_info->limit = tswap32(limit);
6254 target_ldt_info->flags = tswap32(flags);
6255 unlock_user_struct(target_ldt_info, ptr, 1);
6256 return 0;
6257 }
6258
6259 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6260 {
6261 return -TARGET_ENOSYS;
6262 }
6263 #else
6264 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
6265 {
6266 abi_long ret = 0;
6267 abi_ulong val;
6268 int idx;
6269
6270 switch(code) {
6271 case TARGET_ARCH_SET_GS:
6272 case TARGET_ARCH_SET_FS:
6273 if (code == TARGET_ARCH_SET_GS)
6274 idx = R_GS;
6275 else
6276 idx = R_FS;
6277 cpu_x86_load_seg(env, idx, 0);
6278 env->segs[idx].base = addr;
6279 break;
6280 case TARGET_ARCH_GET_GS:
6281 case TARGET_ARCH_GET_FS:
6282 if (code == TARGET_ARCH_GET_GS)
6283 idx = R_GS;
6284 else
6285 idx = R_FS;
6286 val = env->segs[idx].base;
6287 if (put_user(val, addr, abi_ulong))
6288 ret = -TARGET_EFAULT;
6289 break;
6290 default:
6291 ret = -TARGET_EINVAL;
6292 break;
6293 }
6294 return ret;
6295 }
6296 #endif /* defined(TARGET_ABI32 */
6297 #endif /* defined(TARGET_I386) */
6298
6299 /*
6300 * These constants are generic. Supply any that are missing from the host.
6301 */
6302 #ifndef PR_SET_NAME
6303 # define PR_SET_NAME 15
6304 # define PR_GET_NAME 16
6305 #endif
6306 #ifndef PR_SET_FP_MODE
6307 # define PR_SET_FP_MODE 45
6308 # define PR_GET_FP_MODE 46
6309 # define PR_FP_MODE_FR (1 << 0)
6310 # define PR_FP_MODE_FRE (1 << 1)
6311 #endif
6312 #ifndef PR_SVE_SET_VL
6313 # define PR_SVE_SET_VL 50
6314 # define PR_SVE_GET_VL 51
6315 # define PR_SVE_VL_LEN_MASK 0xffff
6316 # define PR_SVE_VL_INHERIT (1 << 17)
6317 #endif
6318 #ifndef PR_PAC_RESET_KEYS
6319 # define PR_PAC_RESET_KEYS 54
6320 # define PR_PAC_APIAKEY (1 << 0)
6321 # define PR_PAC_APIBKEY (1 << 1)
6322 # define PR_PAC_APDAKEY (1 << 2)
6323 # define PR_PAC_APDBKEY (1 << 3)
6324 # define PR_PAC_APGAKEY (1 << 4)
6325 #endif
6326 #ifndef PR_SET_TAGGED_ADDR_CTRL
6327 # define PR_SET_TAGGED_ADDR_CTRL 55
6328 # define PR_GET_TAGGED_ADDR_CTRL 56
6329 # define PR_TAGGED_ADDR_ENABLE (1UL << 0)
6330 #endif
6331 #ifndef PR_MTE_TCF_SHIFT
6332 # define PR_MTE_TCF_SHIFT 1
6333 # define PR_MTE_TCF_NONE (0UL << PR_MTE_TCF_SHIFT)
6334 # define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
6335 # define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
6336 # define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
6337 # define PR_MTE_TAG_SHIFT 3
6338 # define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
6339 #endif
6340 #ifndef PR_SET_IO_FLUSHER
6341 # define PR_SET_IO_FLUSHER 57
6342 # define PR_GET_IO_FLUSHER 58
6343 #endif
6344 #ifndef PR_SET_SYSCALL_USER_DISPATCH
6345 # define PR_SET_SYSCALL_USER_DISPATCH 59
6346 #endif
6347
6348 #include "target_prctl.h"
6349
6350 static abi_long do_prctl_inval0(CPUArchState *env)
6351 {
6352 return -TARGET_EINVAL;
6353 }
6354
6355 static abi_long do_prctl_inval1(CPUArchState *env, abi_long arg2)
6356 {
6357 return -TARGET_EINVAL;
6358 }
6359
6360 #ifndef do_prctl_get_fp_mode
6361 #define do_prctl_get_fp_mode do_prctl_inval0
6362 #endif
6363 #ifndef do_prctl_set_fp_mode
6364 #define do_prctl_set_fp_mode do_prctl_inval1
6365 #endif
6366 #ifndef do_prctl_get_vl
6367 #define do_prctl_get_vl do_prctl_inval0
6368 #endif
6369 #ifndef do_prctl_set_vl
6370 #define do_prctl_set_vl do_prctl_inval1
6371 #endif
6372 #ifndef do_prctl_reset_keys
6373 #define do_prctl_reset_keys do_prctl_inval1
6374 #endif
6375 #ifndef do_prctl_set_tagged_addr_ctrl
6376 #define do_prctl_set_tagged_addr_ctrl do_prctl_inval1
6377 #endif
6378 #ifndef do_prctl_get_tagged_addr_ctrl
6379 #define do_prctl_get_tagged_addr_ctrl do_prctl_inval0
6380 #endif
6381
6382 static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2,
6383 abi_long arg3, abi_long arg4, abi_long arg5)
6384 {
6385 abi_long ret;
6386
6387 switch (option) {
6388 case PR_GET_PDEATHSIG:
6389 {
6390 int deathsig;
6391 ret = get_errno(prctl(PR_GET_PDEATHSIG, &deathsig,
6392 arg3, arg4, arg5));
6393 if (!is_error(ret) && arg2 && put_user_s32(deathsig, arg2)) {
6394 return -TARGET_EFAULT;
6395 }
6396 return ret;
6397 }
6398 case PR_GET_NAME:
6399 {
6400 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
6401 if (!name) {
6402 return -TARGET_EFAULT;
6403 }
6404 ret = get_errno(prctl(PR_GET_NAME, (uintptr_t)name,
6405 arg3, arg4, arg5));
6406 unlock_user(name, arg2, 16);
6407 return ret;
6408 }
6409 case PR_SET_NAME:
6410 {
6411 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
6412 if (!name) {
6413 return -TARGET_EFAULT;
6414 }
6415 ret = get_errno(prctl(PR_SET_NAME, (uintptr_t)name,
6416 arg3, arg4, arg5));
6417 unlock_user(name, arg2, 0);
6418 return ret;
6419 }
6420 case PR_GET_FP_MODE:
6421 return do_prctl_get_fp_mode(env);
6422 case PR_SET_FP_MODE:
6423 return do_prctl_set_fp_mode(env, arg2);
6424 case PR_SVE_GET_VL:
6425 return do_prctl_get_vl(env);
6426 case PR_SVE_SET_VL:
6427 return do_prctl_set_vl(env, arg2);
6428 case PR_PAC_RESET_KEYS:
6429 if (arg3 || arg4 || arg5) {
6430 return -TARGET_EINVAL;
6431 }
6432 return do_prctl_reset_keys(env, arg2);
6433 case PR_SET_TAGGED_ADDR_CTRL:
6434 if (arg3 || arg4 || arg5) {
6435 return -TARGET_EINVAL;
6436 }
6437 return do_prctl_set_tagged_addr_ctrl(env, arg2);
6438 case PR_GET_TAGGED_ADDR_CTRL:
6439 if (arg2 || arg3 || arg4 || arg5) {
6440 return -TARGET_EINVAL;
6441 }
6442 return do_prctl_get_tagged_addr_ctrl(env);
6443
6444 case PR_GET_DUMPABLE:
6445 case PR_SET_DUMPABLE:
6446 case PR_GET_KEEPCAPS:
6447 case PR_SET_KEEPCAPS:
6448 case PR_GET_TIMING:
6449 case PR_SET_TIMING:
6450 case PR_GET_TIMERSLACK:
6451 case PR_SET_TIMERSLACK:
6452 case PR_MCE_KILL:
6453 case PR_MCE_KILL_GET:
6454 case PR_GET_NO_NEW_PRIVS:
6455 case PR_SET_NO_NEW_PRIVS:
6456 case PR_GET_IO_FLUSHER:
6457 case PR_SET_IO_FLUSHER:
6458 /* Some prctl options have no pointer arguments and we can pass on. */
6459 return get_errno(prctl(option, arg2, arg3, arg4, arg5));
6460
6461 case PR_GET_CHILD_SUBREAPER:
6462 case PR_SET_CHILD_SUBREAPER:
6463 case PR_GET_SPECULATION_CTRL:
6464 case PR_SET_SPECULATION_CTRL:
6465 case PR_GET_TID_ADDRESS:
6466 /* TODO */
6467 return -TARGET_EINVAL;
6468
6469 case PR_GET_FPEXC:
6470 case PR_SET_FPEXC:
6471 /* Was used for SPE on PowerPC. */
6472 return -TARGET_EINVAL;
6473
6474 case PR_GET_ENDIAN:
6475 case PR_SET_ENDIAN:
6476 case PR_GET_FPEMU:
6477 case PR_SET_FPEMU:
6478 case PR_SET_MM:
6479 case PR_GET_SECCOMP:
6480 case PR_SET_SECCOMP:
6481 case PR_SET_SYSCALL_USER_DISPATCH:
6482 case PR_GET_THP_DISABLE:
6483 case PR_SET_THP_DISABLE:
6484 case PR_GET_TSC:
6485 case PR_SET_TSC:
6486 case PR_GET_UNALIGN:
6487 case PR_SET_UNALIGN:
6488 /* Disable to prevent the target disabling stuff we need. */
6489 return -TARGET_EINVAL;
6490
6491 default:
6492 qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n",
6493 option);
6494 return -TARGET_EINVAL;
6495 }
6496 }
6497
6498 #define NEW_STACK_SIZE 0x40000
6499
6500
6501 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
6502 typedef struct {
6503 CPUArchState *env;
6504 pthread_mutex_t mutex;
6505 pthread_cond_t cond;
6506 pthread_t thread;
6507 uint32_t tid;
6508 abi_ulong child_tidptr;
6509 abi_ulong parent_tidptr;
6510 sigset_t sigmask;
6511 } new_thread_info;
6512
6513 static void *clone_func(void *arg)
6514 {
6515 new_thread_info *info = arg;
6516 CPUArchState *env;
6517 CPUState *cpu;
6518 TaskState *ts;
6519
6520 rcu_register_thread();
6521 tcg_register_thread();
6522 env = info->env;
6523 cpu = env_cpu(env);
6524 thread_cpu = cpu;
6525 ts = (TaskState *)cpu->opaque;
6526 info->tid = sys_gettid();
6527 task_settid(ts);
6528 if (info->child_tidptr)
6529 put_user_u32(info->tid, info->child_tidptr);
6530 if (info->parent_tidptr)
6531 put_user_u32(info->tid, info->parent_tidptr);
6532 qemu_guest_random_seed_thread_part2(cpu->random_seed);
6533 /* Enable signals. */
6534 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
6535 /* Signal to the parent that we're ready. */
6536 pthread_mutex_lock(&info->mutex);
6537 pthread_cond_broadcast(&info->cond);
6538 pthread_mutex_unlock(&info->mutex);
6539 /* Wait until the parent has finished initializing the tls state. */
6540 pthread_mutex_lock(&clone_lock);
6541 pthread_mutex_unlock(&clone_lock);
6542 cpu_loop(env);
6543 /* never exits */
6544 return NULL;
6545 }
6546
6547 /* do_fork() Must return host values and target errnos (unlike most
6548 do_*() functions). */
6549 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
6550 abi_ulong parent_tidptr, target_ulong newtls,
6551 abi_ulong child_tidptr)
6552 {
6553 CPUState *cpu = env_cpu(env);
6554 int ret;
6555 TaskState *ts;
6556 CPUState *new_cpu;
6557 CPUArchState *new_env;
6558 sigset_t sigmask;
6559
6560 flags &= ~CLONE_IGNORED_FLAGS;
6561
6562 /* Emulate vfork() with fork() */
6563 if (flags & CLONE_VFORK)
6564 flags &= ~(CLONE_VFORK | CLONE_VM);
6565
6566 if (flags & CLONE_VM) {
6567 TaskState *parent_ts = (TaskState *)cpu->opaque;
6568 new_thread_info info;
6569 pthread_attr_t attr;
6570
6571 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
6572 (flags & CLONE_INVALID_THREAD_FLAGS)) {
6573 return -TARGET_EINVAL;
6574 }
6575
6576 ts = g_new0(TaskState, 1);
6577 init_task_state(ts);
6578
6579 /* Grab a mutex so that thread setup appears atomic. */
6580 pthread_mutex_lock(&clone_lock);
6581
6582 /*
6583 * If this is our first additional thread, we need to ensure we
6584 * generate code for parallel execution and flush old translations.
6585 * Do this now so that the copy gets CF_PARALLEL too.
6586 */
6587 if (!(cpu->tcg_cflags & CF_PARALLEL)) {
6588 cpu->tcg_cflags |= CF_PARALLEL;
6589 tb_flush(cpu);
6590 }
6591
6592 /* we create a new CPU instance. */
6593 new_env = cpu_copy(env);
6594 /* Init regs that differ from the parent. */
6595 cpu_clone_regs_child(new_env, newsp, flags);
6596 cpu_clone_regs_parent(env, flags);
6597 new_cpu = env_cpu(new_env);
6598 new_cpu->opaque = ts;
6599 ts->bprm = parent_ts->bprm;
6600 ts->info = parent_ts->info;
6601 ts->signal_mask = parent_ts->signal_mask;
6602
6603 if (flags & CLONE_CHILD_CLEARTID) {
6604 ts->child_tidptr = child_tidptr;
6605 }
6606
6607 if (flags & CLONE_SETTLS) {
6608 cpu_set_tls (new_env, newtls);
6609 }
6610
6611 memset(&info, 0, sizeof(info));
6612 pthread_mutex_init(&info.mutex, NULL);
6613 pthread_mutex_lock(&info.mutex);
6614 pthread_cond_init(&info.cond, NULL);
6615 info.env = new_env;
6616 if (flags & CLONE_CHILD_SETTID) {
6617 info.child_tidptr = child_tidptr;
6618 }
6619 if (flags & CLONE_PARENT_SETTID) {
6620 info.parent_tidptr = parent_tidptr;
6621 }
6622
6623 ret = pthread_attr_init(&attr);
6624 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6625 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6626 /* It is not safe to deliver signals until the child has finished
6627 initializing, so temporarily block all signals. */
6628 sigfillset(&sigmask);
6629 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6630 cpu->random_seed = qemu_guest_random_seed_thread_part1();
6631
6632 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6633 /* TODO: Free new CPU state if thread creation failed. */
6634
6635 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6636 pthread_attr_destroy(&attr);
6637 if (ret == 0) {
6638 /* Wait for the child to initialize. */
6639 pthread_cond_wait(&info.cond, &info.mutex);
6640 ret = info.tid;
6641 } else {
6642 ret = -1;
6643 }
6644 pthread_mutex_unlock(&info.mutex);
6645 pthread_cond_destroy(&info.cond);
6646 pthread_mutex_destroy(&info.mutex);
6647 pthread_mutex_unlock(&clone_lock);
6648 } else {
6649 /* if no CLONE_VM, we consider it is a fork */
6650 if (flags & CLONE_INVALID_FORK_FLAGS) {
6651 return -TARGET_EINVAL;
6652 }
6653
6654 /* We can't support custom termination signals */
6655 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6656 return -TARGET_EINVAL;
6657 }
6658
6659 if (block_signals()) {
6660 return -QEMU_ERESTARTSYS;
6661 }
6662
6663 fork_start();
6664 ret = fork();
6665 if (ret == 0) {
6666 /* Child Process. */
6667 cpu_clone_regs_child(env, newsp, flags);
6668 fork_end(1);
6669 /* There is a race condition here. The parent process could
6670 theoretically read the TID in the child process before the child
6671 tid is set. This would require using either ptrace
6672 (not implemented) or having *_tidptr to point at a shared memory
6673 mapping. We can't repeat the spinlock hack used above because
6674 the child process gets its own copy of the lock. */
6675 if (flags & CLONE_CHILD_SETTID)
6676 put_user_u32(sys_gettid(), child_tidptr);
6677 if (flags & CLONE_PARENT_SETTID)
6678 put_user_u32(sys_gettid(), parent_tidptr);
6679 ts = (TaskState *)cpu->opaque;
6680 if (flags & CLONE_SETTLS)
6681 cpu_set_tls (env, newtls);
6682 if (flags & CLONE_CHILD_CLEARTID)
6683 ts->child_tidptr = child_tidptr;
6684 } else {
6685 cpu_clone_regs_parent(env, flags);
6686 fork_end(0);
6687 }
6688 }
6689 return ret;
6690 }
6691
6692 /* warning : doesn't handle linux specific flags... */
6693 static int target_to_host_fcntl_cmd(int cmd)
6694 {
6695 int ret;
6696
6697 switch(cmd) {
6698 case TARGET_F_DUPFD:
6699 case TARGET_F_GETFD:
6700 case TARGET_F_SETFD:
6701 case TARGET_F_GETFL:
6702 case TARGET_F_SETFL:
6703 case TARGET_F_OFD_GETLK:
6704 case TARGET_F_OFD_SETLK:
6705 case TARGET_F_OFD_SETLKW:
6706 ret = cmd;
6707 break;
6708 case TARGET_F_GETLK:
6709 ret = F_GETLK64;
6710 break;
6711 case TARGET_F_SETLK:
6712 ret = F_SETLK64;
6713 break;
6714 case TARGET_F_SETLKW:
6715 ret = F_SETLKW64;
6716 break;
6717 case TARGET_F_GETOWN:
6718 ret = F_GETOWN;
6719 break;
6720 case TARGET_F_SETOWN:
6721 ret = F_SETOWN;
6722 break;
6723 case TARGET_F_GETSIG:
6724 ret = F_GETSIG;
6725 break;
6726 case TARGET_F_SETSIG:
6727 ret = F_SETSIG;
6728 break;
6729 #if TARGET_ABI_BITS == 32
6730 case TARGET_F_GETLK64:
6731 ret = F_GETLK64;
6732 break;
6733 case TARGET_F_SETLK64:
6734 ret = F_SETLK64;
6735 break;
6736 case TARGET_F_SETLKW64:
6737 ret = F_SETLKW64;
6738 break;
6739 #endif
6740 case TARGET_F_SETLEASE:
6741 ret = F_SETLEASE;
6742 break;
6743 case TARGET_F_GETLEASE:
6744 ret = F_GETLEASE;
6745 break;
6746 #ifdef F_DUPFD_CLOEXEC
6747 case TARGET_F_DUPFD_CLOEXEC:
6748 ret = F_DUPFD_CLOEXEC;
6749 break;
6750 #endif
6751 case TARGET_F_NOTIFY:
6752 ret = F_NOTIFY;
6753 break;
6754 #ifdef F_GETOWN_EX
6755 case TARGET_F_GETOWN_EX:
6756 ret = F_GETOWN_EX;
6757 break;
6758 #endif
6759 #ifdef F_SETOWN_EX
6760 case TARGET_F_SETOWN_EX:
6761 ret = F_SETOWN_EX;
6762 break;
6763 #endif
6764 #ifdef F_SETPIPE_SZ
6765 case TARGET_F_SETPIPE_SZ:
6766 ret = F_SETPIPE_SZ;
6767 break;
6768 case TARGET_F_GETPIPE_SZ:
6769 ret = F_GETPIPE_SZ;
6770 break;
6771 #endif
6772 #ifdef F_ADD_SEALS
6773 case TARGET_F_ADD_SEALS:
6774 ret = F_ADD_SEALS;
6775 break;
6776 case TARGET_F_GET_SEALS:
6777 ret = F_GET_SEALS;
6778 break;
6779 #endif
6780 default:
6781 ret = -TARGET_EINVAL;
6782 break;
6783 }
6784
6785 #if defined(__powerpc64__)
6786 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
6787 * is not supported by kernel. The glibc fcntl call actually adjusts
6788 * them to 5, 6 and 7 before making the syscall(). Since we make the
6789 * syscall directly, adjust to what is supported by the kernel.
6790 */
6791 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
6792 ret -= F_GETLK64 - 5;
6793 }
6794 #endif
6795
6796 return ret;
6797 }
6798
6799 #define FLOCK_TRANSTBL \
6800 switch (type) { \
6801 TRANSTBL_CONVERT(F_RDLCK); \
6802 TRANSTBL_CONVERT(F_WRLCK); \
6803 TRANSTBL_CONVERT(F_UNLCK); \
6804 }
6805
6806 static int target_to_host_flock(int type)
6807 {
6808 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
6809 FLOCK_TRANSTBL
6810 #undef TRANSTBL_CONVERT
6811 return -TARGET_EINVAL;
6812 }
6813
6814 static int host_to_target_flock(int type)
6815 {
6816 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
6817 FLOCK_TRANSTBL
6818 #undef TRANSTBL_CONVERT
6819 /* if we don't know how to convert the value coming
6820 * from the host we copy to the target field as-is
6821 */
6822 return type;
6823 }
6824
6825 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6826 abi_ulong target_flock_addr)
6827 {
6828 struct target_flock *target_fl;
6829 int l_type;
6830
6831 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6832 return -TARGET_EFAULT;
6833 }
6834
6835 __get_user(l_type, &target_fl->l_type);
6836 l_type = target_to_host_flock(l_type);
6837 if (l_type < 0) {
6838 return l_type;
6839 }
6840 fl->l_type = l_type;
6841 __get_user(fl->l_whence, &target_fl->l_whence);
6842 __get_user(fl->l_start, &target_fl->l_start);
6843 __get_user(fl->l_len, &target_fl->l_len);
6844 __get_user(fl->l_pid, &target_fl->l_pid);
6845 unlock_user_struct(target_fl, target_flock_addr, 0);
6846 return 0;
6847 }
6848
6849 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6850 const struct flock64 *fl)
6851 {
6852 struct target_flock *target_fl;
6853 short l_type;
6854
6855 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6856 return -TARGET_EFAULT;
6857 }
6858
6859 l_type = host_to_target_flock(fl->l_type);
6860 __put_user(l_type, &target_fl->l_type);
6861 __put_user(fl->l_whence, &target_fl->l_whence);
6862 __put_user(fl->l_start, &target_fl->l_start);
6863 __put_user(fl->l_len, &target_fl->l_len);
6864 __put_user(fl->l_pid, &target_fl->l_pid);
6865 unlock_user_struct(target_fl, target_flock_addr, 1);
6866 return 0;
6867 }
6868
6869 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6870 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6871
6872 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6873 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
6874 abi_ulong target_flock_addr)
6875 {
6876 struct target_oabi_flock64 *target_fl;
6877 int l_type;
6878
6879 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6880 return -TARGET_EFAULT;
6881 }
6882
6883 __get_user(l_type, &target_fl->l_type);
6884 l_type = target_to_host_flock(l_type);
6885 if (l_type < 0) {
6886 return l_type;
6887 }
6888 fl->l_type = l_type;
6889 __get_user(fl->l_whence, &target_fl->l_whence);
6890 __get_user(fl->l_start, &target_fl->l_start);
6891 __get_user(fl->l_len, &target_fl->l_len);
6892 __get_user(fl->l_pid, &target_fl->l_pid);
6893 unlock_user_struct(target_fl, target_flock_addr, 0);
6894 return 0;
6895 }
6896
6897 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
6898 const struct flock64 *fl)
6899 {
6900 struct target_oabi_flock64 *target_fl;
6901 short l_type;
6902
6903 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6904 return -TARGET_EFAULT;
6905 }
6906
6907 l_type = host_to_target_flock(fl->l_type);
6908 __put_user(l_type, &target_fl->l_type);
6909 __put_user(fl->l_whence, &target_fl->l_whence);
6910 __put_user(fl->l_start, &target_fl->l_start);
6911 __put_user(fl->l_len, &target_fl->l_len);
6912 __put_user(fl->l_pid, &target_fl->l_pid);
6913 unlock_user_struct(target_fl, target_flock_addr, 1);
6914 return 0;
6915 }
6916 #endif
6917
6918 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6919 abi_ulong target_flock_addr)
6920 {
6921 struct target_flock64 *target_fl;
6922 int l_type;
6923
6924 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6925 return -TARGET_EFAULT;
6926 }
6927
6928 __get_user(l_type, &target_fl->l_type);
6929 l_type = target_to_host_flock(l_type);
6930 if (l_type < 0) {
6931 return l_type;
6932 }
6933 fl->l_type = l_type;
6934 __get_user(fl->l_whence, &target_fl->l_whence);
6935 __get_user(fl->l_start, &target_fl->l_start);
6936 __get_user(fl->l_len, &target_fl->l_len);
6937 __get_user(fl->l_pid, &target_fl->l_pid);
6938 unlock_user_struct(target_fl, target_flock_addr, 0);
6939 return 0;
6940 }
6941
6942 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6943 const struct flock64 *fl)
6944 {
6945 struct target_flock64 *target_fl;
6946 short l_type;
6947
6948 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6949 return -TARGET_EFAULT;
6950 }
6951
6952 l_type = host_to_target_flock(fl->l_type);
6953 __put_user(l_type, &target_fl->l_type);
6954 __put_user(fl->l_whence, &target_fl->l_whence);
6955 __put_user(fl->l_start, &target_fl->l_start);
6956 __put_user(fl->l_len, &target_fl->l_len);
6957 __put_user(fl->l_pid, &target_fl->l_pid);
6958 unlock_user_struct(target_fl, target_flock_addr, 1);
6959 return 0;
6960 }
6961
6962 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6963 {
6964 struct flock64 fl64;
6965 #ifdef F_GETOWN_EX
6966 struct f_owner_ex fox;
6967 struct target_f_owner_ex *target_fox;
6968 #endif
6969 abi_long ret;
6970 int host_cmd = target_to_host_fcntl_cmd(cmd);
6971
6972 if (host_cmd == -TARGET_EINVAL)
6973 return host_cmd;
6974
6975 switch(cmd) {
6976 case TARGET_F_GETLK:
6977 ret = copy_from_user_flock(&fl64, arg);
6978 if (ret) {
6979 return ret;
6980 }
6981 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6982 if (ret == 0) {
6983 ret = copy_to_user_flock(arg, &fl64);
6984 }
6985 break;
6986
6987 case TARGET_F_SETLK:
6988 case TARGET_F_SETLKW:
6989 ret = copy_from_user_flock(&fl64, arg);
6990 if (ret) {
6991 return ret;
6992 }
6993 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6994 break;
6995
6996 case TARGET_F_GETLK64:
6997 case TARGET_F_OFD_GETLK:
6998 ret = copy_from_user_flock64(&fl64, arg);
6999 if (ret) {
7000 return ret;
7001 }
7002 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7003 if (ret == 0) {
7004 ret = copy_to_user_flock64(arg, &fl64);
7005 }
7006 break;
7007 case TARGET_F_SETLK64:
7008 case TARGET_F_SETLKW64:
7009 case TARGET_F_OFD_SETLK:
7010 case TARGET_F_OFD_SETLKW:
7011 ret = copy_from_user_flock64(&fl64, arg);
7012 if (ret) {
7013 return ret;
7014 }
7015 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
7016 break;
7017
7018 case TARGET_F_GETFL:
7019 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7020 if (ret >= 0) {
7021 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
7022 }
7023 break;
7024
7025 case TARGET_F_SETFL:
7026 ret = get_errno(safe_fcntl(fd, host_cmd,
7027 target_to_host_bitmask(arg,
7028 fcntl_flags_tbl)));
7029 break;
7030
7031 #ifdef F_GETOWN_EX
7032 case TARGET_F_GETOWN_EX:
7033 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7034 if (ret >= 0) {
7035 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
7036 return -TARGET_EFAULT;
7037 target_fox->type = tswap32(fox.type);
7038 target_fox->pid = tswap32(fox.pid);
7039 unlock_user_struct(target_fox, arg, 1);
7040 }
7041 break;
7042 #endif
7043
7044 #ifdef F_SETOWN_EX
7045 case TARGET_F_SETOWN_EX:
7046 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
7047 return -TARGET_EFAULT;
7048 fox.type = tswap32(target_fox->type);
7049 fox.pid = tswap32(target_fox->pid);
7050 unlock_user_struct(target_fox, arg, 0);
7051 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
7052 break;
7053 #endif
7054
7055 case TARGET_F_SETSIG:
7056 ret = get_errno(safe_fcntl(fd, host_cmd, target_to_host_signal(arg)));
7057 break;
7058
7059 case TARGET_F_GETSIG:
7060 ret = host_to_target_signal(get_errno(safe_fcntl(fd, host_cmd, arg)));
7061 break;
7062
7063 case TARGET_F_SETOWN:
7064 case TARGET_F_GETOWN:
7065 case TARGET_F_SETLEASE:
7066 case TARGET_F_GETLEASE:
7067 case TARGET_F_SETPIPE_SZ:
7068 case TARGET_F_GETPIPE_SZ:
7069 case TARGET_F_ADD_SEALS:
7070 case TARGET_F_GET_SEALS:
7071 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
7072 break;
7073
7074 default:
7075 ret = get_errno(safe_fcntl(fd, cmd, arg));
7076 break;
7077 }
7078 return ret;
7079 }
7080
7081 #ifdef USE_UID16
7082
7083 static inline int high2lowuid(int uid)
7084 {
7085 if (uid > 65535)
7086 return 65534;
7087 else
7088 return uid;
7089 }
7090
7091 static inline int high2lowgid(int gid)
7092 {
7093 if (gid > 65535)
7094 return 65534;
7095 else
7096 return gid;
7097 }
7098
7099 static inline int low2highuid(int uid)
7100 {
7101 if ((int16_t)uid == -1)
7102 return -1;
7103 else
7104 return uid;
7105 }
7106
7107 static inline int low2highgid(int gid)
7108 {
7109 if ((int16_t)gid == -1)
7110 return -1;
7111 else
7112 return gid;
7113 }
7114 static inline int tswapid(int id)
7115 {
7116 return tswap16(id);
7117 }
7118
7119 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
7120
7121 #else /* !USE_UID16 */
7122 static inline int high2lowuid(int uid)
7123 {
7124 return uid;
7125 }
7126 static inline int high2lowgid(int gid)
7127 {
7128 return gid;
7129 }
7130 static inline int low2highuid(int uid)
7131 {
7132 return uid;
7133 }
7134 static inline int low2highgid(int gid)
7135 {
7136 return gid;
7137 }
7138 static inline int tswapid(int id)
7139 {
7140 return tswap32(id);
7141 }
7142
7143 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
7144
7145 #endif /* USE_UID16 */
7146
7147 /* We must do direct syscalls for setting UID/GID, because we want to
7148 * implement the Linux system call semantics of "change only for this thread",
7149 * not the libc/POSIX semantics of "change for all threads in process".
7150 * (See http://ewontfix.com/17/ for more details.)
7151 * We use the 32-bit version of the syscalls if present; if it is not
7152 * then either the host architecture supports 32-bit UIDs natively with
7153 * the standard syscall, or the 16-bit UID is the best we can do.
7154 */
7155 #ifdef __NR_setuid32
7156 #define __NR_sys_setuid __NR_setuid32
7157 #else
7158 #define __NR_sys_setuid __NR_setuid
7159 #endif
7160 #ifdef __NR_setgid32
7161 #define __NR_sys_setgid __NR_setgid32
7162 #else
7163 #define __NR_sys_setgid __NR_setgid
7164 #endif
7165 #ifdef __NR_setresuid32
7166 #define __NR_sys_setresuid __NR_setresuid32
7167 #else
7168 #define __NR_sys_setresuid __NR_setresuid
7169 #endif
7170 #ifdef __NR_setresgid32
7171 #define __NR_sys_setresgid __NR_setresgid32
7172 #else
7173 #define __NR_sys_setresgid __NR_setresgid
7174 #endif
7175
7176 _syscall1(int, sys_setuid, uid_t, uid)
7177 _syscall1(int, sys_setgid, gid_t, gid)
7178 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
7179 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
7180
7181 void syscall_init(void)
7182 {
7183 IOCTLEntry *ie;
7184 const argtype *arg_type;
7185 int size;
7186
7187 thunk_init(STRUCT_MAX);
7188
7189 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
7190 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
7191 #include "syscall_types.h"
7192 #undef STRUCT
7193 #undef STRUCT_SPECIAL
7194
7195 /* we patch the ioctl size if necessary. We rely on the fact that
7196 no ioctl has all the bits at '1' in the size field */
7197 ie = ioctl_entries;
7198 while (ie->target_cmd != 0) {
7199 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
7200 TARGET_IOC_SIZEMASK) {
7201 arg_type = ie->arg_type;
7202 if (arg_type[0] != TYPE_PTR) {
7203 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
7204 ie->target_cmd);
7205 exit(1);
7206 }
7207 arg_type++;
7208 size = thunk_type_size(arg_type, 0);
7209 ie->target_cmd = (ie->target_cmd &
7210 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
7211 (size << TARGET_IOC_SIZESHIFT);
7212 }
7213
7214 /* automatic consistency check if same arch */
7215 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
7216 (defined(__x86_64__) && defined(TARGET_X86_64))
7217 if (unlikely(ie->target_cmd != ie->host_cmd)) {
7218 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
7219 ie->name, ie->target_cmd, ie->host_cmd);
7220 }
7221 #endif
7222 ie++;
7223 }
7224 }
7225
7226 #ifdef TARGET_NR_truncate64
7227 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
7228 abi_long arg2,
7229 abi_long arg3,
7230 abi_long arg4)
7231 {
7232 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
7233 arg2 = arg3;
7234 arg3 = arg4;
7235 }
7236 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
7237 }
7238 #endif
7239
7240 #ifdef TARGET_NR_ftruncate64
7241 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
7242 abi_long arg2,
7243 abi_long arg3,
7244 abi_long arg4)
7245 {
7246 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
7247 arg2 = arg3;
7248 arg3 = arg4;
7249 }
7250 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
7251 }
7252 #endif
7253
7254 #if defined(TARGET_NR_timer_settime) || \
7255 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
7256 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_its,
7257 abi_ulong target_addr)
7258 {
7259 if (target_to_host_timespec(&host_its->it_interval, target_addr +
7260 offsetof(struct target_itimerspec,
7261 it_interval)) ||
7262 target_to_host_timespec(&host_its->it_value, target_addr +
7263 offsetof(struct target_itimerspec,
7264 it_value))) {
7265 return -TARGET_EFAULT;
7266 }
7267
7268 return 0;
7269 }
7270 #endif
7271
7272 #if defined(TARGET_NR_timer_settime64) || \
7273 (defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD))
7274 static inline abi_long target_to_host_itimerspec64(struct itimerspec *host_its,
7275 abi_ulong target_addr)
7276 {
7277 if (target_to_host_timespec64(&host_its->it_interval, target_addr +
7278 offsetof(struct target__kernel_itimerspec,
7279 it_interval)) ||
7280 target_to_host_timespec64(&host_its->it_value, target_addr +
7281 offsetof(struct target__kernel_itimerspec,
7282 it_value))) {
7283 return -TARGET_EFAULT;
7284 }
7285
7286 return 0;
7287 }
7288 #endif
7289
7290 #if ((defined(TARGET_NR_timerfd_gettime) || \
7291 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
7292 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
7293 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
7294 struct itimerspec *host_its)
7295 {
7296 if (host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7297 it_interval),
7298 &host_its->it_interval) ||
7299 host_to_target_timespec(target_addr + offsetof(struct target_itimerspec,
7300 it_value),
7301 &host_its->it_value)) {
7302 return -TARGET_EFAULT;
7303 }
7304 return 0;
7305 }
7306 #endif
7307
7308 #if ((defined(TARGET_NR_timerfd_gettime64) || \
7309 defined(TARGET_NR_timerfd_settime64)) && defined(CONFIG_TIMERFD)) || \
7310 defined(TARGET_NR_timer_gettime64) || defined(TARGET_NR_timer_settime64)
7311 static inline abi_long host_to_target_itimerspec64(abi_ulong target_addr,
7312 struct itimerspec *host_its)
7313 {
7314 if (host_to_target_timespec64(target_addr +
7315 offsetof(struct target__kernel_itimerspec,
7316 it_interval),
7317 &host_its->it_interval) ||
7318 host_to_target_timespec64(target_addr +
7319 offsetof(struct target__kernel_itimerspec,
7320 it_value),
7321 &host_its->it_value)) {
7322 return -TARGET_EFAULT;
7323 }
7324 return 0;
7325 }
7326 #endif
7327
7328 #if defined(TARGET_NR_adjtimex) || \
7329 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
7330 static inline abi_long target_to_host_timex(struct timex *host_tx,
7331 abi_long target_addr)
7332 {
7333 struct target_timex *target_tx;
7334
7335 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7336 return -TARGET_EFAULT;
7337 }
7338
7339 __get_user(host_tx->modes, &target_tx->modes);
7340 __get_user(host_tx->offset, &target_tx->offset);
7341 __get_user(host_tx->freq, &target_tx->freq);
7342 __get_user(host_tx->maxerror, &target_tx->maxerror);
7343 __get_user(host_tx->esterror, &target_tx->esterror);
7344 __get_user(host_tx->status, &target_tx->status);
7345 __get_user(host_tx->constant, &target_tx->constant);
7346 __get_user(host_tx->precision, &target_tx->precision);
7347 __get_user(host_tx->tolerance, &target_tx->tolerance);
7348 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7349 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7350 __get_user(host_tx->tick, &target_tx->tick);
7351 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7352 __get_user(host_tx->jitter, &target_tx->jitter);
7353 __get_user(host_tx->shift, &target_tx->shift);
7354 __get_user(host_tx->stabil, &target_tx->stabil);
7355 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7356 __get_user(host_tx->calcnt, &target_tx->calcnt);
7357 __get_user(host_tx->errcnt, &target_tx->errcnt);
7358 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7359 __get_user(host_tx->tai, &target_tx->tai);
7360
7361 unlock_user_struct(target_tx, target_addr, 0);
7362 return 0;
7363 }
7364
7365 static inline abi_long host_to_target_timex(abi_long target_addr,
7366 struct timex *host_tx)
7367 {
7368 struct target_timex *target_tx;
7369
7370 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7371 return -TARGET_EFAULT;
7372 }
7373
7374 __put_user(host_tx->modes, &target_tx->modes);
7375 __put_user(host_tx->offset, &target_tx->offset);
7376 __put_user(host_tx->freq, &target_tx->freq);
7377 __put_user(host_tx->maxerror, &target_tx->maxerror);
7378 __put_user(host_tx->esterror, &target_tx->esterror);
7379 __put_user(host_tx->status, &target_tx->status);
7380 __put_user(host_tx->constant, &target_tx->constant);
7381 __put_user(host_tx->precision, &target_tx->precision);
7382 __put_user(host_tx->tolerance, &target_tx->tolerance);
7383 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
7384 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
7385 __put_user(host_tx->tick, &target_tx->tick);
7386 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7387 __put_user(host_tx->jitter, &target_tx->jitter);
7388 __put_user(host_tx->shift, &target_tx->shift);
7389 __put_user(host_tx->stabil, &target_tx->stabil);
7390 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7391 __put_user(host_tx->calcnt, &target_tx->calcnt);
7392 __put_user(host_tx->errcnt, &target_tx->errcnt);
7393 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7394 __put_user(host_tx->tai, &target_tx->tai);
7395
7396 unlock_user_struct(target_tx, target_addr, 1);
7397 return 0;
7398 }
7399 #endif
7400
7401
7402 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
7403 static inline abi_long target_to_host_timex64(struct timex *host_tx,
7404 abi_long target_addr)
7405 {
7406 struct target__kernel_timex *target_tx;
7407
7408 if (copy_from_user_timeval64(&host_tx->time, target_addr +
7409 offsetof(struct target__kernel_timex,
7410 time))) {
7411 return -TARGET_EFAULT;
7412 }
7413
7414 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
7415 return -TARGET_EFAULT;
7416 }
7417
7418 __get_user(host_tx->modes, &target_tx->modes);
7419 __get_user(host_tx->offset, &target_tx->offset);
7420 __get_user(host_tx->freq, &target_tx->freq);
7421 __get_user(host_tx->maxerror, &target_tx->maxerror);
7422 __get_user(host_tx->esterror, &target_tx->esterror);
7423 __get_user(host_tx->status, &target_tx->status);
7424 __get_user(host_tx->constant, &target_tx->constant);
7425 __get_user(host_tx->precision, &target_tx->precision);
7426 __get_user(host_tx->tolerance, &target_tx->tolerance);
7427 __get_user(host_tx->tick, &target_tx->tick);
7428 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7429 __get_user(host_tx->jitter, &target_tx->jitter);
7430 __get_user(host_tx->shift, &target_tx->shift);
7431 __get_user(host_tx->stabil, &target_tx->stabil);
7432 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
7433 __get_user(host_tx->calcnt, &target_tx->calcnt);
7434 __get_user(host_tx->errcnt, &target_tx->errcnt);
7435 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
7436 __get_user(host_tx->tai, &target_tx->tai);
7437
7438 unlock_user_struct(target_tx, target_addr, 0);
7439 return 0;
7440 }
7441
7442 static inline abi_long host_to_target_timex64(abi_long target_addr,
7443 struct timex *host_tx)
7444 {
7445 struct target__kernel_timex *target_tx;
7446
7447 if (copy_to_user_timeval64(target_addr +
7448 offsetof(struct target__kernel_timex, time),
7449 &host_tx->time)) {
7450 return -TARGET_EFAULT;
7451 }
7452
7453 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
7454 return -TARGET_EFAULT;
7455 }
7456
7457 __put_user(host_tx->modes, &target_tx->modes);
7458 __put_user(host_tx->offset, &target_tx->offset);
7459 __put_user(host_tx->freq, &target_tx->freq);
7460 __put_user(host_tx->maxerror, &target_tx->maxerror);
7461 __put_user(host_tx->esterror, &target_tx->esterror);
7462 __put_user(host_tx->status, &target_tx->status);
7463 __put_user(host_tx->constant, &target_tx->constant);
7464 __put_user(host_tx->precision, &target_tx->precision);
7465 __put_user(host_tx->tolerance, &target_tx->tolerance);
7466 __put_user(host_tx->tick, &target_tx->tick);
7467 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
7468 __put_user(host_tx->jitter, &target_tx->jitter);
7469 __put_user(host_tx->shift, &target_tx->shift);
7470 __put_user(host_tx->stabil, &target_tx->stabil);
7471 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
7472 __put_user(host_tx->calcnt, &target_tx->calcnt);
7473 __put_user(host_tx->errcnt, &target_tx->errcnt);
7474 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
7475 __put_user(host_tx->tai, &target_tx->tai);
7476
7477 unlock_user_struct(target_tx, target_addr, 1);
7478 return 0;
7479 }
7480 #endif
7481
7482 #ifndef HAVE_SIGEV_NOTIFY_THREAD_ID
7483 #define sigev_notify_thread_id _sigev_un._tid
7484 #endif
7485
7486 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
7487 abi_ulong target_addr)
7488 {
7489 struct target_sigevent *target_sevp;
7490
7491 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
7492 return -TARGET_EFAULT;
7493 }
7494
7495 /* This union is awkward on 64 bit systems because it has a 32 bit
7496 * integer and a pointer in it; we follow the conversion approach
7497 * used for handling sigval types in signal.c so the guest should get
7498 * the correct value back even if we did a 64 bit byteswap and it's
7499 * using the 32 bit integer.
7500 */
7501 host_sevp->sigev_value.sival_ptr =
7502 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
7503 host_sevp->sigev_signo =
7504 target_to_host_signal(tswap32(target_sevp->sigev_signo));
7505 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
7506 host_sevp->sigev_notify_thread_id = tswap32(target_sevp->_sigev_un._tid);
7507
7508 unlock_user_struct(target_sevp, target_addr, 1);
7509 return 0;
7510 }
7511
7512 #if defined(TARGET_NR_mlockall)
7513 static inline int target_to_host_mlockall_arg(int arg)
7514 {
7515 int result = 0;
7516
7517 if (arg & TARGET_MCL_CURRENT) {
7518 result |= MCL_CURRENT;
7519 }
7520 if (arg & TARGET_MCL_FUTURE) {
7521 result |= MCL_FUTURE;
7522 }
7523 #ifdef MCL_ONFAULT
7524 if (arg & TARGET_MCL_ONFAULT) {
7525 result |= MCL_ONFAULT;
7526 }
7527 #endif
7528
7529 return result;
7530 }
7531 #endif
7532
7533 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
7534 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
7535 defined(TARGET_NR_newfstatat))
7536 static inline abi_long host_to_target_stat64(void *cpu_env,
7537 abi_ulong target_addr,
7538 struct stat *host_st)
7539 {
7540 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
7541 if (((CPUARMState *)cpu_env)->eabi) {
7542 struct target_eabi_stat64 *target_st;
7543
7544 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7545 return -TARGET_EFAULT;
7546 memset(target_st, 0, sizeof(struct target_eabi_stat64));
7547 __put_user(host_st->st_dev, &target_st->st_dev);
7548 __put_user(host_st->st_ino, &target_st->st_ino);
7549 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7550 __put_user(host_st->st_ino, &target_st->__st_ino);
7551 #endif
7552 __put_user(host_st->st_mode, &target_st->st_mode);
7553 __put_user(host_st->st_nlink, &target_st->st_nlink);
7554 __put_user(host_st->st_uid, &target_st->st_uid);
7555 __put_user(host_st->st_gid, &target_st->st_gid);
7556 __put_user(host_st->st_rdev, &target_st->st_rdev);
7557 __put_user(host_st->st_size, &target_st->st_size);
7558 __put_user(host_st->st_blksize, &target_st->st_blksize);
7559 __put_user(host_st->st_blocks, &target_st->st_blocks);
7560 __put_user(host_st->st_atime, &target_st->target_st_atime);
7561 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7562 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7563 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7564 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7565 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7566 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7567 #endif
7568 unlock_user_struct(target_st, target_addr, 1);
7569 } else
7570 #endif
7571 {
7572 #if defined(TARGET_HAS_STRUCT_STAT64)
7573 struct target_stat64 *target_st;
7574 #else
7575 struct target_stat *target_st;
7576 #endif
7577
7578 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
7579 return -TARGET_EFAULT;
7580 memset(target_st, 0, sizeof(*target_st));
7581 __put_user(host_st->st_dev, &target_st->st_dev);
7582 __put_user(host_st->st_ino, &target_st->st_ino);
7583 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
7584 __put_user(host_st->st_ino, &target_st->__st_ino);
7585 #endif
7586 __put_user(host_st->st_mode, &target_st->st_mode);
7587 __put_user(host_st->st_nlink, &target_st->st_nlink);
7588 __put_user(host_st->st_uid, &target_st->st_uid);
7589 __put_user(host_st->st_gid, &target_st->st_gid);
7590 __put_user(host_st->st_rdev, &target_st->st_rdev);
7591 /* XXX: better use of kernel struct */
7592 __put_user(host_st->st_size, &target_st->st_size);
7593 __put_user(host_st->st_blksize, &target_st->st_blksize);
7594 __put_user(host_st->st_blocks, &target_st->st_blocks);
7595 __put_user(host_st->st_atime, &target_st->target_st_atime);
7596 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
7597 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
7598 #ifdef HAVE_STRUCT_STAT_ST_ATIM
7599 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
7600 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
7601 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
7602 #endif
7603 unlock_user_struct(target_st, target_addr, 1);
7604 }
7605
7606 return 0;
7607 }
7608 #endif
7609
7610 #if defined(TARGET_NR_statx) && defined(__NR_statx)
7611 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
7612 abi_ulong target_addr)
7613 {
7614 struct target_statx *target_stx;
7615
7616 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
7617 return -TARGET_EFAULT;
7618 }
7619 memset(target_stx, 0, sizeof(*target_stx));
7620
7621 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
7622 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
7623 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
7624 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
7625 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
7626 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
7627 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
7628 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
7629 __put_user(host_stx->stx_size, &target_stx->stx_size);
7630 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
7631 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
7632 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
7633 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
7634 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
7635 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
7636 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
7637 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
7638 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
7639 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
7640 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
7641 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
7642 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
7643 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
7644
7645 unlock_user_struct(target_stx, target_addr, 1);
7646
7647 return 0;
7648 }
7649 #endif
7650
7651 static int do_sys_futex(int *uaddr, int op, int val,
7652 const struct timespec *timeout, int *uaddr2,
7653 int val3)
7654 {
7655 #if HOST_LONG_BITS == 64
7656 #if defined(__NR_futex)
7657 /* always a 64-bit time_t, it doesn't define _time64 version */
7658 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7659
7660 #endif
7661 #else /* HOST_LONG_BITS == 64 */
7662 #if defined(__NR_futex_time64)
7663 if (sizeof(timeout->tv_sec) == 8) {
7664 /* _time64 function on 32bit arch */
7665 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
7666 }
7667 #endif
7668 #if defined(__NR_futex)
7669 /* old function on 32bit arch */
7670 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
7671 #endif
7672 #endif /* HOST_LONG_BITS == 64 */
7673 g_assert_not_reached();
7674 }
7675
7676 static int do_safe_futex(int *uaddr, int op, int val,
7677 const struct timespec *timeout, int *uaddr2,
7678 int val3)
7679 {
7680 #if HOST_LONG_BITS == 64
7681 #if defined(__NR_futex)
7682 /* always a 64-bit time_t, it doesn't define _time64 version */
7683 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7684 #endif
7685 #else /* HOST_LONG_BITS == 64 */
7686 #if defined(__NR_futex_time64)
7687 if (sizeof(timeout->tv_sec) == 8) {
7688 /* _time64 function on 32bit arch */
7689 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
7690 val3));
7691 }
7692 #endif
7693 #if defined(__NR_futex)
7694 /* old function on 32bit arch */
7695 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
7696 #endif
7697 #endif /* HOST_LONG_BITS == 64 */
7698 return -TARGET_ENOSYS;
7699 }
7700
7701 /* ??? Using host futex calls even when target atomic operations
7702 are not really atomic probably breaks things. However implementing
7703 futexes locally would make futexes shared between multiple processes
7704 tricky. However they're probably useless because guest atomic
7705 operations won't work either. */
7706 #if defined(TARGET_NR_futex)
7707 static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val,
7708 target_ulong timeout, target_ulong uaddr2, int val3)
7709 {
7710 struct timespec ts, *pts;
7711 int base_op;
7712
7713 /* ??? We assume FUTEX_* constants are the same on both host
7714 and target. */
7715 #ifdef FUTEX_CMD_MASK
7716 base_op = op & FUTEX_CMD_MASK;
7717 #else
7718 base_op = op;
7719 #endif
7720 switch (base_op) {
7721 case FUTEX_WAIT:
7722 case FUTEX_WAIT_BITSET:
7723 if (timeout) {
7724 pts = &ts;
7725 target_to_host_timespec(pts, timeout);
7726 } else {
7727 pts = NULL;
7728 }
7729 return do_safe_futex(g2h(cpu, uaddr),
7730 op, tswap32(val), pts, NULL, val3);
7731 case FUTEX_WAKE:
7732 return do_safe_futex(g2h(cpu, uaddr),
7733 op, val, NULL, NULL, 0);
7734 case FUTEX_FD:
7735 return do_safe_futex(g2h(cpu, uaddr),
7736 op, val, NULL, NULL, 0);
7737 case FUTEX_REQUEUE:
7738 case FUTEX_CMP_REQUEUE:
7739 case FUTEX_WAKE_OP:
7740 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7741 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7742 But the prototype takes a `struct timespec *'; insert casts
7743 to satisfy the compiler. We do not need to tswap TIMEOUT
7744 since it's not compared to guest memory. */
7745 pts = (struct timespec *)(uintptr_t) timeout;
7746 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
7747 (base_op == FUTEX_CMP_REQUEUE
7748 ? tswap32(val3) : val3));
7749 default:
7750 return -TARGET_ENOSYS;
7751 }
7752 }
7753 #endif
7754
7755 #if defined(TARGET_NR_futex_time64)
7756 static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op,
7757 int val, target_ulong timeout,
7758 target_ulong uaddr2, int val3)
7759 {
7760 struct timespec ts, *pts;
7761 int base_op;
7762
7763 /* ??? We assume FUTEX_* constants are the same on both host
7764 and target. */
7765 #ifdef FUTEX_CMD_MASK
7766 base_op = op & FUTEX_CMD_MASK;
7767 #else
7768 base_op = op;
7769 #endif
7770 switch (base_op) {
7771 case FUTEX_WAIT:
7772 case FUTEX_WAIT_BITSET:
7773 if (timeout) {
7774 pts = &ts;
7775 if (target_to_host_timespec64(pts, timeout)) {
7776 return -TARGET_EFAULT;
7777 }
7778 } else {
7779 pts = NULL;
7780 }
7781 return do_safe_futex(g2h(cpu, uaddr), op,
7782 tswap32(val), pts, NULL, val3);
7783 case FUTEX_WAKE:
7784 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
7785 case FUTEX_FD:
7786 return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0);
7787 case FUTEX_REQUEUE:
7788 case FUTEX_CMP_REQUEUE:
7789 case FUTEX_WAKE_OP:
7790 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7791 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7792 But the prototype takes a `struct timespec *'; insert casts
7793 to satisfy the compiler. We do not need to tswap TIMEOUT
7794 since it's not compared to guest memory. */
7795 pts = (struct timespec *)(uintptr_t) timeout;
7796 return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2),
7797 (base_op == FUTEX_CMP_REQUEUE
7798 ? tswap32(val3) : val3));
7799 default:
7800 return -TARGET_ENOSYS;
7801 }
7802 }
7803 #endif
7804
7805 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7806 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7807 abi_long handle, abi_long mount_id,
7808 abi_long flags)
7809 {
7810 struct file_handle *target_fh;
7811 struct file_handle *fh;
7812 int mid = 0;
7813 abi_long ret;
7814 char *name;
7815 unsigned int size, total_size;
7816
7817 if (get_user_s32(size, handle)) {
7818 return -TARGET_EFAULT;
7819 }
7820
7821 name = lock_user_string(pathname);
7822 if (!name) {
7823 return -TARGET_EFAULT;
7824 }
7825
7826 total_size = sizeof(struct file_handle) + size;
7827 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7828 if (!target_fh) {
7829 unlock_user(name, pathname, 0);
7830 return -TARGET_EFAULT;
7831 }
7832
7833 fh = g_malloc0(total_size);
7834 fh->handle_bytes = size;
7835
7836 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7837 unlock_user(name, pathname, 0);
7838
7839 /* man name_to_handle_at(2):
7840 * Other than the use of the handle_bytes field, the caller should treat
7841 * the file_handle structure as an opaque data type
7842 */
7843
7844 memcpy(target_fh, fh, total_size);
7845 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7846 target_fh->handle_type = tswap32(fh->handle_type);
7847 g_free(fh);
7848 unlock_user(target_fh, handle, total_size);
7849
7850 if (put_user_s32(mid, mount_id)) {
7851 return -TARGET_EFAULT;
7852 }
7853
7854 return ret;
7855
7856 }
7857 #endif
7858
7859 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7860 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7861 abi_long flags)
7862 {
7863 struct file_handle *target_fh;
7864 struct file_handle *fh;
7865 unsigned int size, total_size;
7866 abi_long ret;
7867
7868 if (get_user_s32(size, handle)) {
7869 return -TARGET_EFAULT;
7870 }
7871
7872 total_size = sizeof(struct file_handle) + size;
7873 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7874 if (!target_fh) {
7875 return -TARGET_EFAULT;
7876 }
7877
7878 fh = g_memdup(target_fh, total_size);
7879 fh->handle_bytes = size;
7880 fh->handle_type = tswap32(target_fh->handle_type);
7881
7882 ret = get_errno(open_by_handle_at(mount_fd, fh,
7883 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7884
7885 g_free(fh);
7886
7887 unlock_user(target_fh, handle, total_size);
7888
7889 return ret;
7890 }
7891 #endif
7892
7893 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7894
7895 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7896 {
7897 int host_flags;
7898 target_sigset_t *target_mask;
7899 sigset_t host_mask;
7900 abi_long ret;
7901
7902 if (flags & ~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC)) {
7903 return -TARGET_EINVAL;
7904 }
7905 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7906 return -TARGET_EFAULT;
7907 }
7908
7909 target_to_host_sigset(&host_mask, target_mask);
7910
7911 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7912
7913 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7914 if (ret >= 0) {
7915 fd_trans_register(ret, &target_signalfd_trans);
7916 }
7917
7918 unlock_user_struct(target_mask, mask, 0);
7919
7920 return ret;
7921 }
7922 #endif
7923
7924 /* Map host to target signal numbers for the wait family of syscalls.
7925 Assume all other status bits are the same. */
7926 int host_to_target_waitstatus(int status)
7927 {
7928 if (WIFSIGNALED(status)) {
7929 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7930 }
7931 if (WIFSTOPPED(status)) {
7932 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7933 | (status & 0xff);
7934 }
7935 return status;
7936 }
7937
7938 static int open_self_cmdline(void *cpu_env, int fd)
7939 {
7940 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7941 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
7942 int i;
7943
7944 for (i = 0; i < bprm->argc; i++) {
7945 size_t len = strlen(bprm->argv[i]) + 1;
7946
7947 if (write(fd, bprm->argv[i], len) != len) {
7948 return -1;
7949 }
7950 }
7951
7952 return 0;
7953 }
7954
7955 static int open_self_maps(void *cpu_env, int fd)
7956 {
7957 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7958 TaskState *ts = cpu->opaque;
7959 GSList *map_info = read_self_maps();
7960 GSList *s;
7961 int count;
7962
7963 for (s = map_info; s; s = g_slist_next(s)) {
7964 MapInfo *e = (MapInfo *) s->data;
7965
7966 if (h2g_valid(e->start)) {
7967 unsigned long min = e->start;
7968 unsigned long max = e->end;
7969 int flags = page_get_flags(h2g(min));
7970 const char *path;
7971
7972 max = h2g_valid(max - 1) ?
7973 max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1;
7974
7975 if (page_check_range(h2g(min), max - min, flags) == -1) {
7976 continue;
7977 }
7978
7979 if (h2g(min) == ts->info->stack_limit) {
7980 path = "[stack]";
7981 } else {
7982 path = e->path;
7983 }
7984
7985 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
7986 " %c%c%c%c %08" PRIx64 " %s %"PRId64,
7987 h2g(min), h2g(max - 1) + 1,
7988 (flags & PAGE_READ) ? 'r' : '-',
7989 (flags & PAGE_WRITE_ORG) ? 'w' : '-',
7990 (flags & PAGE_EXEC) ? 'x' : '-',
7991 e->is_priv ? 'p' : '-',
7992 (uint64_t) e->offset, e->dev, e->inode);
7993 if (path) {
7994 dprintf(fd, "%*s%s\n", 73 - count, "", path);
7995 } else {
7996 dprintf(fd, "\n");
7997 }
7998 }
7999 }
8000
8001 free_self_maps(map_info);
8002
8003 #ifdef TARGET_VSYSCALL_PAGE
8004 /*
8005 * We only support execution from the vsyscall page.
8006 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
8007 */
8008 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
8009 " --xp 00000000 00:00 0",
8010 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
8011 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
8012 #endif
8013
8014 return 0;
8015 }
8016
8017 static int open_self_stat(void *cpu_env, int fd)
8018 {
8019 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
8020 TaskState *ts = cpu->opaque;
8021 g_autoptr(GString) buf = g_string_new(NULL);
8022 int i;
8023
8024 for (i = 0; i < 44; i++) {
8025 if (i == 0) {
8026 /* pid */
8027 g_string_printf(buf, FMT_pid " ", getpid());
8028 } else if (i == 1) {
8029 /* app name */
8030 gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
8031 bin = bin ? bin + 1 : ts->bprm->argv[0];
8032 g_string_printf(buf, "(%.15s) ", bin);
8033 } else if (i == 3) {
8034 /* ppid */
8035 g_string_printf(buf, FMT_pid " ", getppid());
8036 } else if (i == 27) {
8037 /* stack bottom */
8038 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
8039 } else {
8040 /* for the rest, there is MasterCard */
8041 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
8042 }
8043
8044 if (write(fd, buf->str, buf->len) != buf->len) {
8045 return -1;
8046 }
8047 }
8048
8049 return 0;
8050 }
8051
8052 static int open_self_auxv(void *cpu_env, int fd)
8053 {
8054 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
8055 TaskState *ts = cpu->opaque;
8056 abi_ulong auxv = ts->info->saved_auxv;
8057 abi_ulong len = ts->info->auxv_len;
8058 char *ptr;
8059
8060 /*
8061 * Auxiliary vector is stored in target process stack.
8062 * read in whole auxv vector and copy it to file
8063 */
8064 ptr = lock_user(VERIFY_READ, auxv, len, 0);
8065 if (ptr != NULL) {
8066 while (len > 0) {
8067 ssize_t r;
8068 r = write(fd, ptr, len);
8069 if (r <= 0) {
8070 break;
8071 }
8072 len -= r;
8073 ptr += r;
8074 }
8075 lseek(fd, 0, SEEK_SET);
8076 unlock_user(ptr, auxv, len);
8077 }
8078
8079 return 0;
8080 }
8081
8082 static int is_proc_myself(const char *filename, const char *entry)
8083 {
8084 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
8085 filename += strlen("/proc/");
8086 if (!strncmp(filename, "self/", strlen("self/"))) {
8087 filename += strlen("self/");
8088 } else if (*filename >= '1' && *filename <= '9') {
8089 char myself[80];
8090 snprintf(myself, sizeof(myself), "%d/", getpid());
8091 if (!strncmp(filename, myself, strlen(myself))) {
8092 filename += strlen(myself);
8093 } else {
8094 return 0;
8095 }
8096 } else {
8097 return 0;
8098 }
8099 if (!strcmp(filename, entry)) {
8100 return 1;
8101 }
8102 }
8103 return 0;
8104 }
8105
8106 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
8107 defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
8108 static int is_proc(const char *filename, const char *entry)
8109 {
8110 return strcmp(filename, entry) == 0;
8111 }
8112 #endif
8113
8114 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
8115 static int open_net_route(void *cpu_env, int fd)
8116 {
8117 FILE *fp;
8118 char *line = NULL;
8119 size_t len = 0;
8120 ssize_t read;
8121
8122 fp = fopen("/proc/net/route", "r");
8123 if (fp == NULL) {
8124 return -1;
8125 }
8126
8127 /* read header */
8128
8129 read = getline(&line, &len, fp);
8130 dprintf(fd, "%s", line);
8131
8132 /* read routes */
8133
8134 while ((read = getline(&line, &len, fp)) != -1) {
8135 char iface[16];
8136 uint32_t dest, gw, mask;
8137 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
8138 int fields;
8139
8140 fields = sscanf(line,
8141 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8142 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
8143 &mask, &mtu, &window, &irtt);
8144 if (fields != 11) {
8145 continue;
8146 }
8147 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
8148 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
8149 metric, tswap32(mask), mtu, window, irtt);
8150 }
8151
8152 free(line);
8153 fclose(fp);
8154
8155 return 0;
8156 }
8157 #endif
8158
8159 #if defined(TARGET_SPARC)
8160 static int open_cpuinfo(void *cpu_env, int fd)
8161 {
8162 dprintf(fd, "type\t\t: sun4u\n");
8163 return 0;
8164 }
8165 #endif
8166
8167 #if defined(TARGET_HPPA)
8168 static int open_cpuinfo(void *cpu_env, int fd)
8169 {
8170 dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
8171 dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
8172 dprintf(fd, "capabilities\t: os32\n");
8173 dprintf(fd, "model\t\t: 9000/778/B160L\n");
8174 dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
8175 return 0;
8176 }
8177 #endif
8178
8179 #if defined(TARGET_M68K)
8180 static int open_hardware(void *cpu_env, int fd)
8181 {
8182 dprintf(fd, "Model:\t\tqemu-m68k\n");
8183 return 0;
8184 }
8185 #endif
8186
8187 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
8188 {
8189 struct fake_open {
8190 const char *filename;
8191 int (*fill)(void *cpu_env, int fd);
8192 int (*cmp)(const char *s1, const char *s2);
8193 };
8194 const struct fake_open *fake_open;
8195 static const struct fake_open fakes[] = {
8196 { "maps", open_self_maps, is_proc_myself },
8197 { "stat", open_self_stat, is_proc_myself },
8198 { "auxv", open_self_auxv, is_proc_myself },
8199 { "cmdline", open_self_cmdline, is_proc_myself },
8200 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
8201 { "/proc/net/route", open_net_route, is_proc },
8202 #endif
8203 #if defined(TARGET_SPARC) || defined(TARGET_HPPA)
8204 { "/proc/cpuinfo", open_cpuinfo, is_proc },
8205 #endif
8206 #if defined(TARGET_M68K)
8207 { "/proc/hardware", open_hardware, is_proc },
8208 #endif
8209 { NULL, NULL, NULL }
8210 };
8211
8212 if (is_proc_myself(pathname, "exe")) {
8213 int execfd = qemu_getauxval(AT_EXECFD);
8214 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
8215 }
8216
8217 for (fake_open = fakes; fake_open->filename; fake_open++) {
8218 if (fake_open->cmp(pathname, fake_open->filename)) {
8219 break;
8220 }
8221 }
8222
8223 if (fake_open->filename) {
8224 const char *tmpdir;
8225 char filename[PATH_MAX];
8226 int fd, r;
8227
8228 /* create temporary file to map stat to */
8229 tmpdir = getenv("TMPDIR");
8230 if (!tmpdir)
8231 tmpdir = "/tmp";
8232 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
8233 fd = mkstemp(filename);
8234 if (fd < 0) {
8235 return fd;
8236 }
8237 unlink(filename);
8238
8239 if ((r = fake_open->fill(cpu_env, fd))) {
8240 int e = errno;
8241 close(fd);
8242 errno = e;
8243 return r;
8244 }
8245 lseek(fd, 0, SEEK_SET);
8246
8247 return fd;
8248 }
8249
8250 return safe_openat(dirfd, path(pathname), flags, mode);
8251 }
8252
8253 #define TIMER_MAGIC 0x0caf0000
8254 #define TIMER_MAGIC_MASK 0xffff0000
8255
8256 /* Convert QEMU provided timer ID back to internal 16bit index format */
8257 static target_timer_t get_timer_id(abi_long arg)
8258 {
8259 target_timer_t timerid = arg;
8260
8261 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
8262 return -TARGET_EINVAL;
8263 }
8264
8265 timerid &= 0xffff;
8266
8267 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
8268 return -TARGET_EINVAL;
8269 }
8270
8271 return timerid;
8272 }
8273
8274 static int target_to_host_cpu_mask(unsigned long *host_mask,
8275 size_t host_size,
8276 abi_ulong target_addr,
8277 size_t target_size)
8278 {
8279 unsigned target_bits = sizeof(abi_ulong) * 8;
8280 unsigned host_bits = sizeof(*host_mask) * 8;
8281 abi_ulong *target_mask;
8282 unsigned i, j;
8283
8284 assert(host_size >= target_size);
8285
8286 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
8287 if (!target_mask) {
8288 return -TARGET_EFAULT;
8289 }
8290 memset(host_mask, 0, host_size);
8291
8292 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8293 unsigned bit = i * target_bits;
8294 abi_ulong val;
8295
8296 __get_user(val, &target_mask[i]);
8297 for (j = 0; j < target_bits; j++, bit++) {
8298 if (val & (1UL << j)) {
8299 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
8300 }
8301 }
8302 }
8303
8304 unlock_user(target_mask, target_addr, 0);
8305 return 0;
8306 }
8307
8308 static int host_to_target_cpu_mask(const unsigned long *host_mask,
8309 size_t host_size,
8310 abi_ulong target_addr,
8311 size_t target_size)
8312 {
8313 unsigned target_bits = sizeof(abi_ulong) * 8;
8314 unsigned host_bits = sizeof(*host_mask) * 8;
8315 abi_ulong *target_mask;
8316 unsigned i, j;
8317
8318 assert(host_size >= target_size);
8319
8320 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
8321 if (!target_mask) {
8322 return -TARGET_EFAULT;
8323 }
8324
8325 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
8326 unsigned bit = i * target_bits;
8327 abi_ulong val = 0;
8328
8329 for (j = 0; j < target_bits; j++, bit++) {
8330 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
8331 val |= 1UL << j;
8332 }
8333 }
8334 __put_user(val, &target_mask[i]);
8335 }
8336
8337 unlock_user(target_mask, target_addr, target_size);
8338 return 0;
8339 }
8340
8341 #ifdef TARGET_NR_getdents
8342 static int do_getdents(abi_long dirfd, abi_long arg2, abi_long count)
8343 {
8344 g_autofree void *hdirp = NULL;
8345 void *tdirp;
8346 int hlen, hoff, toff;
8347 int hreclen, treclen;
8348 off64_t prev_diroff = 0;
8349
8350 hdirp = g_try_malloc(count);
8351 if (!hdirp) {
8352 return -TARGET_ENOMEM;
8353 }
8354
8355 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8356 hlen = sys_getdents(dirfd, hdirp, count);
8357 #else
8358 hlen = sys_getdents64(dirfd, hdirp, count);
8359 #endif
8360
8361 hlen = get_errno(hlen);
8362 if (is_error(hlen)) {
8363 return hlen;
8364 }
8365
8366 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8367 if (!tdirp) {
8368 return -TARGET_EFAULT;
8369 }
8370
8371 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8372 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8373 struct linux_dirent *hde = hdirp + hoff;
8374 #else
8375 struct linux_dirent64 *hde = hdirp + hoff;
8376 #endif
8377 struct target_dirent *tde = tdirp + toff;
8378 int namelen;
8379 uint8_t type;
8380
8381 namelen = strlen(hde->d_name);
8382 hreclen = hde->d_reclen;
8383 treclen = offsetof(struct target_dirent, d_name) + namelen + 2;
8384 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent));
8385
8386 if (toff + treclen > count) {
8387 /*
8388 * If the host struct is smaller than the target struct, or
8389 * requires less alignment and thus packs into less space,
8390 * then the host can return more entries than we can pass
8391 * on to the guest.
8392 */
8393 if (toff == 0) {
8394 toff = -TARGET_EINVAL; /* result buffer is too small */
8395 break;
8396 }
8397 /*
8398 * Return what we have, resetting the file pointer to the
8399 * location of the first record not returned.
8400 */
8401 lseek64(dirfd, prev_diroff, SEEK_SET);
8402 break;
8403 }
8404
8405 prev_diroff = hde->d_off;
8406 tde->d_ino = tswapal(hde->d_ino);
8407 tde->d_off = tswapal(hde->d_off);
8408 tde->d_reclen = tswap16(treclen);
8409 memcpy(tde->d_name, hde->d_name, namelen + 1);
8410
8411 /*
8412 * The getdents type is in what was formerly a padding byte at the
8413 * end of the structure.
8414 */
8415 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
8416 type = *((uint8_t *)hde + hreclen - 1);
8417 #else
8418 type = hde->d_type;
8419 #endif
8420 *((uint8_t *)tde + treclen - 1) = type;
8421 }
8422
8423 unlock_user(tdirp, arg2, toff);
8424 return toff;
8425 }
8426 #endif /* TARGET_NR_getdents */
8427
8428 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
8429 static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count)
8430 {
8431 g_autofree void *hdirp = NULL;
8432 void *tdirp;
8433 int hlen, hoff, toff;
8434 int hreclen, treclen;
8435 off64_t prev_diroff = 0;
8436
8437 hdirp = g_try_malloc(count);
8438 if (!hdirp) {
8439 return -TARGET_ENOMEM;
8440 }
8441
8442 hlen = get_errno(sys_getdents64(dirfd, hdirp, count));
8443 if (is_error(hlen)) {
8444 return hlen;
8445 }
8446
8447 tdirp = lock_user(VERIFY_WRITE, arg2, count, 0);
8448 if (!tdirp) {
8449 return -TARGET_EFAULT;
8450 }
8451
8452 for (hoff = toff = 0; hoff < hlen; hoff += hreclen, toff += treclen) {
8453 struct linux_dirent64 *hde = hdirp + hoff;
8454 struct target_dirent64 *tde = tdirp + toff;
8455 int namelen;
8456
8457 namelen = strlen(hde->d_name) + 1;
8458 hreclen = hde->d_reclen;
8459 treclen = offsetof(struct target_dirent64, d_name) + namelen;
8460 treclen = QEMU_ALIGN_UP(treclen, __alignof(struct target_dirent64));
8461
8462 if (toff + treclen > count) {
8463 /*
8464 * If the host struct is smaller than the target struct, or
8465 * requires less alignment and thus packs into less space,
8466 * then the host can return more entries than we can pass
8467 * on to the guest.
8468 */
8469 if (toff == 0) {
8470 toff = -TARGET_EINVAL; /* result buffer is too small */
8471 break;
8472 }
8473 /*
8474 * Return what we have, resetting the file pointer to the
8475 * location of the first record not returned.
8476 */
8477 lseek64(dirfd, prev_diroff, SEEK_SET);
8478 break;
8479 }
8480
8481 prev_diroff = hde->d_off;
8482 tde->d_ino = tswap64(hde->d_ino);
8483 tde->d_off = tswap64(hde->d_off);
8484 tde->d_reclen = tswap16(treclen);
8485 tde->d_type = hde->d_type;
8486 memcpy(tde->d_name, hde->d_name, namelen);
8487 }
8488
8489 unlock_user(tdirp, arg2, toff);
8490 return toff;
8491 }
8492 #endif /* TARGET_NR_getdents64 */
8493
8494 #if defined(TARGET_NR_pivot_root) && defined(__NR_pivot_root)
8495 _syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
8496 #endif
8497
8498 /* This is an internal helper for do_syscall so that it is easier
8499 * to have a single return point, so that actions, such as logging
8500 * of syscall results, can be performed.
8501 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
8502 */
8503 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
8504 abi_long arg2, abi_long arg3, abi_long arg4,
8505 abi_long arg5, abi_long arg6, abi_long arg7,
8506 abi_long arg8)
8507 {
8508 CPUState *cpu = env_cpu(cpu_env);
8509 abi_long ret;
8510 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
8511 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
8512 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
8513 || defined(TARGET_NR_statx)
8514 struct stat st;
8515 #endif
8516 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
8517 || defined(TARGET_NR_fstatfs)
8518 struct statfs stfs;
8519 #endif
8520 void *p;
8521
8522 switch(num) {
8523 case TARGET_NR_exit:
8524 /* In old applications this may be used to implement _exit(2).
8525 However in threaded applications it is used for thread termination,
8526 and _exit_group is used for application termination.
8527 Do thread termination if we have more then one thread. */
8528
8529 if (block_signals()) {
8530 return -QEMU_ERESTARTSYS;
8531 }
8532
8533 pthread_mutex_lock(&clone_lock);
8534
8535 if (CPU_NEXT(first_cpu)) {
8536 TaskState *ts = cpu->opaque;
8537
8538 object_property_set_bool(OBJECT(cpu), "realized", false, NULL);
8539 object_unref(OBJECT(cpu));
8540 /*
8541 * At this point the CPU should be unrealized and removed
8542 * from cpu lists. We can clean-up the rest of the thread
8543 * data without the lock held.
8544 */
8545
8546 pthread_mutex_unlock(&clone_lock);
8547
8548 if (ts->child_tidptr) {
8549 put_user_u32(0, ts->child_tidptr);
8550 do_sys_futex(g2h(cpu, ts->child_tidptr),
8551 FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
8552 }
8553 thread_cpu = NULL;
8554 g_free(ts);
8555 rcu_unregister_thread();
8556 pthread_exit(NULL);
8557 }
8558
8559 pthread_mutex_unlock(&clone_lock);
8560 preexit_cleanup(cpu_env, arg1);
8561 _exit(arg1);
8562 return 0; /* avoid warning */
8563 case TARGET_NR_read:
8564 if (arg2 == 0 && arg3 == 0) {
8565 return get_errno(safe_read(arg1, 0, 0));
8566 } else {
8567 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
8568 return -TARGET_EFAULT;
8569 ret = get_errno(safe_read(arg1, p, arg3));
8570 if (ret >= 0 &&
8571 fd_trans_host_to_target_data(arg1)) {
8572 ret = fd_trans_host_to_target_data(arg1)(p, ret);
8573 }
8574 unlock_user(p, arg2, ret);
8575 }
8576 return ret;
8577 case TARGET_NR_write:
8578 if (arg2 == 0 && arg3 == 0) {
8579 return get_errno(safe_write(arg1, 0, 0));
8580 }
8581 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
8582 return -TARGET_EFAULT;
8583 if (fd_trans_target_to_host_data(arg1)) {
8584 void *copy = g_malloc(arg3);
8585 memcpy(copy, p, arg3);
8586 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
8587 if (ret >= 0) {
8588 ret = get_errno(safe_write(arg1, copy, ret));
8589 }
8590 g_free(copy);
8591 } else {
8592 ret = get_errno(safe_write(arg1, p, arg3));
8593 }
8594 unlock_user(p, arg2, 0);
8595 return ret;
8596
8597 #ifdef TARGET_NR_open
8598 case TARGET_NR_open:
8599 if (!(p = lock_user_string(arg1)))
8600 return -TARGET_EFAULT;
8601 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
8602 target_to_host_bitmask(arg2, fcntl_flags_tbl),
8603 arg3));
8604 fd_trans_unregister(ret);
8605 unlock_user(p, arg1, 0);
8606 return ret;
8607 #endif
8608 case TARGET_NR_openat:
8609 if (!(p = lock_user_string(arg2)))
8610 return -TARGET_EFAULT;
8611 ret = get_errno(do_openat(cpu_env, arg1, p,
8612 target_to_host_bitmask(arg3, fcntl_flags_tbl),
8613 arg4));
8614 fd_trans_unregister(ret);
8615 unlock_user(p, arg2, 0);
8616 return ret;
8617 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8618 case TARGET_NR_name_to_handle_at:
8619 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
8620 return ret;
8621 #endif
8622 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
8623 case TARGET_NR_open_by_handle_at:
8624 ret = do_open_by_handle_at(arg1, arg2, arg3);
8625 fd_trans_unregister(ret);
8626 return ret;
8627 #endif
8628 case TARGET_NR_close:
8629 fd_trans_unregister(arg1);
8630 return get_errno(close(arg1));
8631
8632 case TARGET_NR_brk:
8633 return do_brk(arg1);
8634 #ifdef TARGET_NR_fork
8635 case TARGET_NR_fork:
8636 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
8637 #endif
8638 #ifdef TARGET_NR_waitpid
8639 case TARGET_NR_waitpid:
8640 {
8641 int status;
8642 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
8643 if (!is_error(ret) && arg2 && ret
8644 && put_user_s32(host_to_target_waitstatus(status), arg2))
8645 return -TARGET_EFAULT;
8646 }
8647 return ret;
8648 #endif
8649 #ifdef TARGET_NR_waitid
8650 case TARGET_NR_waitid:
8651 {
8652 siginfo_t info;
8653 info.si_pid = 0;
8654 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
8655 if (!is_error(ret) && arg3 && info.si_pid != 0) {
8656 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
8657 return -TARGET_EFAULT;
8658 host_to_target_siginfo(p, &info);
8659 unlock_user(p, arg3, sizeof(target_siginfo_t));
8660 }
8661 }
8662 return ret;
8663 #endif
8664 #ifdef TARGET_NR_creat /* not on alpha */
8665 case TARGET_NR_creat:
8666 if (!(p = lock_user_string(arg1)))
8667 return -TARGET_EFAULT;
8668 ret = get_errno(creat(p, arg2));
8669 fd_trans_unregister(ret);
8670 unlock_user(p, arg1, 0);
8671 return ret;
8672 #endif
8673 #ifdef TARGET_NR_link
8674 case TARGET_NR_link:
8675 {
8676 void * p2;
8677 p = lock_user_string(arg1);
8678 p2 = lock_user_string(arg2);
8679 if (!p || !p2)
8680 ret = -TARGET_EFAULT;
8681 else
8682 ret = get_errno(link(p, p2));
8683 unlock_user(p2, arg2, 0);
8684 unlock_user(p, arg1, 0);
8685 }
8686 return ret;
8687 #endif
8688 #if defined(TARGET_NR_linkat)
8689 case TARGET_NR_linkat:
8690 {
8691 void * p2 = NULL;
8692 if (!arg2 || !arg4)
8693 return -TARGET_EFAULT;
8694 p = lock_user_string(arg2);
8695 p2 = lock_user_string(arg4);
8696 if (!p || !p2)
8697 ret = -TARGET_EFAULT;
8698 else
8699 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
8700 unlock_user(p, arg2, 0);
8701 unlock_user(p2, arg4, 0);
8702 }
8703 return ret;
8704 #endif
8705 #ifdef TARGET_NR_unlink
8706 case TARGET_NR_unlink:
8707 if (!(p = lock_user_string(arg1)))
8708 return -TARGET_EFAULT;
8709 ret = get_errno(unlink(p));
8710 unlock_user(p, arg1, 0);
8711 return ret;
8712 #endif
8713 #if defined(TARGET_NR_unlinkat)
8714 case TARGET_NR_unlinkat:
8715 if (!(p = lock_user_string(arg2)))
8716 return -TARGET_EFAULT;
8717 ret = get_errno(unlinkat(arg1, p, arg3));
8718 unlock_user(p, arg2, 0);
8719 return ret;
8720 #endif
8721 case TARGET_NR_execve:
8722 {
8723 char **argp, **envp;
8724 int argc, envc;
8725 abi_ulong gp;
8726 abi_ulong guest_argp;
8727 abi_ulong guest_envp;
8728 abi_ulong addr;
8729 char **q;
8730
8731 argc = 0;
8732 guest_argp = arg2;
8733 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
8734 if (get_user_ual(addr, gp))
8735 return -TARGET_EFAULT;
8736 if (!addr)
8737 break;
8738 argc++;
8739 }
8740 envc = 0;
8741 guest_envp = arg3;
8742 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
8743 if (get_user_ual(addr, gp))
8744 return -TARGET_EFAULT;
8745 if (!addr)
8746 break;
8747 envc++;
8748 }
8749
8750 argp = g_new0(char *, argc + 1);
8751 envp = g_new0(char *, envc + 1);
8752
8753 for (gp = guest_argp, q = argp; gp;
8754 gp += sizeof(abi_ulong), q++) {
8755 if (get_user_ual(addr, gp))
8756 goto execve_efault;
8757 if (!addr)
8758 break;
8759 if (!(*q = lock_user_string(addr)))
8760 goto execve_efault;
8761 }
8762 *q = NULL;
8763
8764 for (gp = guest_envp, q = envp; gp;
8765 gp += sizeof(abi_ulong), q++) {
8766 if (get_user_ual(addr, gp))
8767 goto execve_efault;
8768 if (!addr)
8769 break;
8770 if (!(*q = lock_user_string(addr)))
8771 goto execve_efault;
8772 }
8773 *q = NULL;
8774
8775 if (!(p = lock_user_string(arg1)))
8776 goto execve_efault;
8777 /* Although execve() is not an interruptible syscall it is
8778 * a special case where we must use the safe_syscall wrapper:
8779 * if we allow a signal to happen before we make the host
8780 * syscall then we will 'lose' it, because at the point of
8781 * execve the process leaves QEMU's control. So we use the
8782 * safe syscall wrapper to ensure that we either take the
8783 * signal as a guest signal, or else it does not happen
8784 * before the execve completes and makes it the other
8785 * program's problem.
8786 */
8787 ret = get_errno(safe_execve(p, argp, envp));
8788 unlock_user(p, arg1, 0);
8789
8790 goto execve_end;
8791
8792 execve_efault:
8793 ret = -TARGET_EFAULT;
8794
8795 execve_end:
8796 for (gp = guest_argp, q = argp; *q;
8797 gp += sizeof(abi_ulong), q++) {
8798 if (get_user_ual(addr, gp)
8799 || !addr)
8800 break;
8801 unlock_user(*q, addr, 0);
8802 }
8803 for (gp = guest_envp, q = envp; *q;
8804 gp += sizeof(abi_ulong), q++) {
8805 if (get_user_ual(addr, gp)
8806 || !addr)
8807 break;
8808 unlock_user(*q, addr, 0);
8809 }
8810
8811 g_free(argp);
8812 g_free(envp);
8813 }
8814 return ret;
8815 case TARGET_NR_chdir:
8816 if (!(p = lock_user_string(arg1)))
8817 return -TARGET_EFAULT;
8818 ret = get_errno(chdir(p));
8819 unlock_user(p, arg1, 0);
8820 return ret;
8821 #ifdef TARGET_NR_time
8822 case TARGET_NR_time:
8823 {
8824 time_t host_time;
8825 ret = get_errno(time(&host_time));
8826 if (!is_error(ret)
8827 && arg1
8828 && put_user_sal(host_time, arg1))
8829 return -TARGET_EFAULT;
8830 }
8831 return ret;
8832 #endif
8833 #ifdef TARGET_NR_mknod
8834 case TARGET_NR_mknod:
8835 if (!(p = lock_user_string(arg1)))
8836 return -TARGET_EFAULT;
8837 ret = get_errno(mknod(p, arg2, arg3));
8838 unlock_user(p, arg1, 0);
8839 return ret;
8840 #endif
8841 #if defined(TARGET_NR_mknodat)
8842 case TARGET_NR_mknodat:
8843 if (!(p = lock_user_string(arg2)))
8844 return -TARGET_EFAULT;
8845 ret = get_errno(mknodat(arg1, p, arg3, arg4));
8846 unlock_user(p, arg2, 0);
8847 return ret;
8848 #endif
8849 #ifdef TARGET_NR_chmod
8850 case TARGET_NR_chmod:
8851 if (!(p = lock_user_string(arg1)))
8852 return -TARGET_EFAULT;
8853 ret = get_errno(chmod(p, arg2));
8854 unlock_user(p, arg1, 0);
8855 return ret;
8856 #endif
8857 #ifdef TARGET_NR_lseek
8858 case TARGET_NR_lseek:
8859 return get_errno(lseek(arg1, arg2, arg3));
8860 #endif
8861 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
8862 /* Alpha specific */
8863 case TARGET_NR_getxpid:
8864 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
8865 return get_errno(getpid());
8866 #endif
8867 #ifdef TARGET_NR_getpid
8868 case TARGET_NR_getpid:
8869 return get_errno(getpid());
8870 #endif
8871 case TARGET_NR_mount:
8872 {
8873 /* need to look at the data field */
8874 void *p2, *p3;
8875
8876 if (arg1) {
8877 p = lock_user_string(arg1);
8878 if (!p) {
8879 return -TARGET_EFAULT;
8880 }
8881 } else {
8882 p = NULL;
8883 }
8884
8885 p2 = lock_user_string(arg2);
8886 if (!p2) {
8887 if (arg1) {
8888 unlock_user(p, arg1, 0);
8889 }
8890 return -TARGET_EFAULT;
8891 }
8892
8893 if (arg3) {
8894 p3 = lock_user_string(arg3);
8895 if (!p3) {
8896 if (arg1) {
8897 unlock_user(p, arg1, 0);
8898 }
8899 unlock_user(p2, arg2, 0);
8900 return -TARGET_EFAULT;
8901 }
8902 } else {
8903 p3 = NULL;
8904 }
8905
8906 /* FIXME - arg5 should be locked, but it isn't clear how to
8907 * do that since it's not guaranteed to be a NULL-terminated
8908 * string.
8909 */
8910 if (!arg5) {
8911 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
8912 } else {
8913 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(cpu, arg5));
8914 }
8915 ret = get_errno(ret);
8916
8917 if (arg1) {
8918 unlock_user(p, arg1, 0);
8919 }
8920 unlock_user(p2, arg2, 0);
8921 if (arg3) {
8922 unlock_user(p3, arg3, 0);
8923 }
8924 }
8925 return ret;
8926 #if defined(TARGET_NR_umount) || defined(TARGET_NR_oldumount)
8927 #if defined(TARGET_NR_umount)
8928 case TARGET_NR_umount:
8929 #endif
8930 #if defined(TARGET_NR_oldumount)
8931 case TARGET_NR_oldumount:
8932 #endif
8933 if (!(p = lock_user_string(arg1)))
8934 return -TARGET_EFAULT;
8935 ret = get_errno(umount(p));
8936 unlock_user(p, arg1, 0);
8937 return ret;
8938 #endif
8939 #ifdef TARGET_NR_stime /* not on alpha */
8940 case TARGET_NR_stime:
8941 {
8942 struct timespec ts;
8943 ts.tv_nsec = 0;
8944 if (get_user_sal(ts.tv_sec, arg1)) {
8945 return -TARGET_EFAULT;
8946 }
8947 return get_errno(clock_settime(CLOCK_REALTIME, &ts));
8948 }
8949 #endif
8950 #ifdef TARGET_NR_alarm /* not on alpha */
8951 case TARGET_NR_alarm:
8952 return alarm(arg1);
8953 #endif
8954 #ifdef TARGET_NR_pause /* not on alpha */
8955 case TARGET_NR_pause:
8956 if (!block_signals()) {
8957 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
8958 }
8959 return -TARGET_EINTR;
8960 #endif
8961 #ifdef TARGET_NR_utime
8962 case TARGET_NR_utime:
8963 {
8964 struct utimbuf tbuf, *host_tbuf;
8965 struct target_utimbuf *target_tbuf;
8966 if (arg2) {
8967 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
8968 return -TARGET_EFAULT;
8969 tbuf.actime = tswapal(target_tbuf->actime);
8970 tbuf.modtime = tswapal(target_tbuf->modtime);
8971 unlock_user_struct(target_tbuf, arg2, 0);
8972 host_tbuf = &tbuf;
8973 } else {
8974 host_tbuf = NULL;
8975 }
8976 if (!(p = lock_user_string(arg1)))
8977 return -TARGET_EFAULT;
8978 ret = get_errno(utime(p, host_tbuf));
8979 unlock_user(p, arg1, 0);
8980 }
8981 return ret;
8982 #endif
8983 #ifdef TARGET_NR_utimes
8984 case TARGET_NR_utimes:
8985 {
8986 struct timeval *tvp, tv[2];
8987 if (arg2) {
8988 if (copy_from_user_timeval(&tv[0], arg2)
8989 || copy_from_user_timeval(&tv[1],
8990 arg2 + sizeof(struct target_timeval)))
8991 return -TARGET_EFAULT;
8992 tvp = tv;
8993 } else {
8994 tvp = NULL;
8995 }
8996 if (!(p = lock_user_string(arg1)))
8997 return -TARGET_EFAULT;
8998 ret = get_errno(utimes(p, tvp));
8999 unlock_user(p, arg1, 0);
9000 }
9001 return ret;
9002 #endif
9003 #if defined(TARGET_NR_futimesat)
9004 case TARGET_NR_futimesat:
9005 {
9006 struct timeval *tvp, tv[2];
9007 if (arg3) {
9008 if (copy_from_user_timeval(&tv[0], arg3)
9009 || copy_from_user_timeval(&tv[1],
9010 arg3 + sizeof(struct target_timeval)))
9011 return -TARGET_EFAULT;
9012 tvp = tv;
9013 } else {
9014 tvp = NULL;
9015 }
9016 if (!(p = lock_user_string(arg2))) {
9017 return -TARGET_EFAULT;
9018 }
9019 ret = get_errno(futimesat(arg1, path(p), tvp));
9020 unlock_user(p, arg2, 0);
9021 }
9022 return ret;
9023 #endif
9024 #ifdef TARGET_NR_access
9025 case TARGET_NR_access:
9026 if (!(p = lock_user_string(arg1))) {
9027 return -TARGET_EFAULT;
9028 }
9029 ret = get_errno(access(path(p), arg2));
9030 unlock_user(p, arg1, 0);
9031 return ret;
9032 #endif
9033 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
9034 case TARGET_NR_faccessat:
9035 if (!(p = lock_user_string(arg2))) {
9036 return -TARGET_EFAULT;
9037 }
9038 ret = get_errno(faccessat(arg1, p, arg3, 0));
9039 unlock_user(p, arg2, 0);
9040 return ret;
9041 #endif
9042 #ifdef TARGET_NR_nice /* not on alpha */
9043 case TARGET_NR_nice:
9044 return get_errno(nice(arg1));
9045 #endif
9046 case TARGET_NR_sync:
9047 sync();
9048 return 0;
9049 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
9050 case TARGET_NR_syncfs:
9051 return get_errno(syncfs(arg1));
9052 #endif
9053 case TARGET_NR_kill:
9054 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
9055 #ifdef TARGET_NR_rename
9056 case TARGET_NR_rename:
9057 {
9058 void *p2;
9059 p = lock_user_string(arg1);
9060 p2 = lock_user_string(arg2);
9061 if (!p || !p2)
9062 ret = -TARGET_EFAULT;
9063 else
9064 ret = get_errno(rename(p, p2));
9065 unlock_user(p2, arg2, 0);
9066 unlock_user(p, arg1, 0);
9067 }
9068 return ret;
9069 #endif
9070 #if defined(TARGET_NR_renameat)
9071 case TARGET_NR_renameat:
9072 {
9073 void *p2;
9074 p = lock_user_string(arg2);
9075 p2 = lock_user_string(arg4);
9076 if (!p || !p2)
9077 ret = -TARGET_EFAULT;
9078 else
9079 ret = get_errno(renameat(arg1, p, arg3, p2));
9080 unlock_user(p2, arg4, 0);
9081 unlock_user(p, arg2, 0);
9082 }
9083 return ret;
9084 #endif
9085 #if defined(TARGET_NR_renameat2)
9086 case TARGET_NR_renameat2:
9087 {
9088 void *p2;
9089 p = lock_user_string(arg2);
9090 p2 = lock_user_string(arg4);
9091 if (!p || !p2) {
9092 ret = -TARGET_EFAULT;
9093 } else {
9094 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
9095 }
9096 unlock_user(p2, arg4, 0);
9097 unlock_user(p, arg2, 0);
9098 }
9099 return ret;
9100 #endif
9101 #ifdef TARGET_NR_mkdir
9102 case TARGET_NR_mkdir:
9103 if (!(p = lock_user_string(arg1)))
9104 return -TARGET_EFAULT;
9105 ret = get_errno(mkdir(p, arg2));
9106 unlock_user(p, arg1, 0);
9107 return ret;
9108 #endif
9109 #if defined(TARGET_NR_mkdirat)
9110 case TARGET_NR_mkdirat:
9111 if (!(p = lock_user_string(arg2)))
9112 return -TARGET_EFAULT;
9113 ret = get_errno(mkdirat(arg1, p, arg3));
9114 unlock_user(p, arg2, 0);
9115 return ret;
9116 #endif
9117 #ifdef TARGET_NR_rmdir
9118 case TARGET_NR_rmdir:
9119 if (!(p = lock_user_string(arg1)))
9120 return -TARGET_EFAULT;
9121 ret = get_errno(rmdir(p));
9122 unlock_user(p, arg1, 0);
9123 return ret;
9124 #endif
9125 case TARGET_NR_dup:
9126 ret = get_errno(dup(arg1));
9127 if (ret >= 0) {
9128 fd_trans_dup(arg1, ret);
9129 }
9130 return ret;
9131 #ifdef TARGET_NR_pipe
9132 case TARGET_NR_pipe:
9133 return do_pipe(cpu_env, arg1, 0, 0);
9134 #endif
9135 #ifdef TARGET_NR_pipe2
9136 case TARGET_NR_pipe2:
9137 return do_pipe(cpu_env, arg1,
9138 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
9139 #endif
9140 case TARGET_NR_times:
9141 {
9142 struct target_tms *tmsp;
9143 struct tms tms;
9144 ret = get_errno(times(&tms));
9145 if (arg1) {
9146 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
9147 if (!tmsp)
9148 return -TARGET_EFAULT;
9149 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
9150 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
9151 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
9152 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
9153 }
9154 if (!is_error(ret))
9155 ret = host_to_target_clock_t(ret);
9156 }
9157 return ret;
9158 case TARGET_NR_acct:
9159 if (arg1 == 0) {
9160 ret = get_errno(acct(NULL));
9161 } else {
9162 if (!(p = lock_user_string(arg1))) {
9163 return -TARGET_EFAULT;
9164 }
9165 ret = get_errno(acct(path(p)));
9166 unlock_user(p, arg1, 0);
9167 }
9168 return ret;
9169 #ifdef TARGET_NR_umount2
9170 case TARGET_NR_umount2:
9171 if (!(p = lock_user_string(arg1)))
9172 return -TARGET_EFAULT;
9173 ret = get_errno(umount2(p, arg2));
9174 unlock_user(p, arg1, 0);
9175 return ret;
9176 #endif
9177 case TARGET_NR_ioctl:
9178 return do_ioctl(arg1, arg2, arg3);
9179 #ifdef TARGET_NR_fcntl
9180 case TARGET_NR_fcntl:
9181 return do_fcntl(arg1, arg2, arg3);
9182 #endif
9183 case TARGET_NR_setpgid:
9184 return get_errno(setpgid(arg1, arg2));
9185 case TARGET_NR_umask:
9186 return get_errno(umask(arg1));
9187 case TARGET_NR_chroot:
9188 if (!(p = lock_user_string(arg1)))
9189 return -TARGET_EFAULT;
9190 ret = get_errno(chroot(p));
9191 unlock_user(p, arg1, 0);
9192 return ret;
9193 #ifdef TARGET_NR_dup2
9194 case TARGET_NR_dup2:
9195 ret = get_errno(dup2(arg1, arg2));
9196 if (ret >= 0) {
9197 fd_trans_dup(arg1, arg2);
9198 }
9199 return ret;
9200 #endif
9201 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
9202 case TARGET_NR_dup3:
9203 {
9204 int host_flags;
9205
9206 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
9207 return -EINVAL;
9208 }
9209 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
9210 ret = get_errno(dup3(arg1, arg2, host_flags));
9211 if (ret >= 0) {
9212 fd_trans_dup(arg1, arg2);
9213 }
9214 return ret;
9215 }
9216 #endif
9217 #ifdef TARGET_NR_getppid /* not on alpha */
9218 case TARGET_NR_getppid:
9219 return get_errno(getppid());
9220 #endif
9221 #ifdef TARGET_NR_getpgrp
9222 case TARGET_NR_getpgrp:
9223 return get_errno(getpgrp());
9224 #endif
9225 case TARGET_NR_setsid:
9226 return get_errno(setsid());
9227 #ifdef TARGET_NR_sigaction
9228 case TARGET_NR_sigaction:
9229 {
9230 #if defined(TARGET_MIPS)
9231 struct target_sigaction act, oact, *pact, *old_act;
9232
9233 if (arg2) {
9234 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9235 return -TARGET_EFAULT;
9236 act._sa_handler = old_act->_sa_handler;
9237 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
9238 act.sa_flags = old_act->sa_flags;
9239 unlock_user_struct(old_act, arg2, 0);
9240 pact = &act;
9241 } else {
9242 pact = NULL;
9243 }
9244
9245 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9246
9247 if (!is_error(ret) && arg3) {
9248 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9249 return -TARGET_EFAULT;
9250 old_act->_sa_handler = oact._sa_handler;
9251 old_act->sa_flags = oact.sa_flags;
9252 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
9253 old_act->sa_mask.sig[1] = 0;
9254 old_act->sa_mask.sig[2] = 0;
9255 old_act->sa_mask.sig[3] = 0;
9256 unlock_user_struct(old_act, arg3, 1);
9257 }
9258 #else
9259 struct target_old_sigaction *old_act;
9260 struct target_sigaction act, oact, *pact;
9261 if (arg2) {
9262 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
9263 return -TARGET_EFAULT;
9264 act._sa_handler = old_act->_sa_handler;
9265 target_siginitset(&act.sa_mask, old_act->sa_mask);
9266 act.sa_flags = old_act->sa_flags;
9267 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9268 act.sa_restorer = old_act->sa_restorer;
9269 #endif
9270 unlock_user_struct(old_act, arg2, 0);
9271 pact = &act;
9272 } else {
9273 pact = NULL;
9274 }
9275 ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
9276 if (!is_error(ret) && arg3) {
9277 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
9278 return -TARGET_EFAULT;
9279 old_act->_sa_handler = oact._sa_handler;
9280 old_act->sa_mask = oact.sa_mask.sig[0];
9281 old_act->sa_flags = oact.sa_flags;
9282 #ifdef TARGET_ARCH_HAS_SA_RESTORER
9283 old_act->sa_restorer = oact.sa_restorer;
9284 #endif
9285 unlock_user_struct(old_act, arg3, 1);
9286 }
9287 #endif
9288 }
9289 return ret;
9290 #endif
9291 case TARGET_NR_rt_sigaction:
9292 {
9293 /*
9294 * For Alpha and SPARC this is a 5 argument syscall, with
9295 * a 'restorer' parameter which must be copied into the
9296 * sa_restorer field of the sigaction struct.
9297 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
9298 * and arg5 is the sigsetsize.
9299 */
9300 #if defined(TARGET_ALPHA)
9301 target_ulong sigsetsize = arg4;
9302 target_ulong restorer = arg5;
9303 #elif defined(TARGET_SPARC)
9304 target_ulong restorer = arg4;
9305 target_ulong sigsetsize = arg5;
9306 #else
9307 target_ulong sigsetsize = arg4;
9308 target_ulong restorer = 0;
9309 #endif
9310 struct target_sigaction *act = NULL;
9311 struct target_sigaction *oact = NULL;
9312
9313 if (sigsetsize != sizeof(target_sigset_t)) {
9314 return -TARGET_EINVAL;
9315 }
9316 if (arg2 && !lock_user_struct(VERIFY_READ, act, arg2, 1)) {
9317 return -TARGET_EFAULT;
9318 }
9319 if (arg3 && !lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
9320 ret = -TARGET_EFAULT;
9321 } else {
9322 ret = get_errno(do_sigaction(arg1, act, oact, restorer));
9323 if (oact) {
9324 unlock_user_struct(oact, arg3, 1);
9325 }
9326 }
9327 if (act) {
9328 unlock_user_struct(act, arg2, 0);
9329 }
9330 }
9331 return ret;
9332 #ifdef TARGET_NR_sgetmask /* not on alpha */
9333 case TARGET_NR_sgetmask:
9334 {
9335 sigset_t cur_set;
9336 abi_ulong target_set;
9337 ret = do_sigprocmask(0, NULL, &cur_set);
9338 if (!ret) {
9339 host_to_target_old_sigset(&target_set, &cur_set);
9340 ret = target_set;
9341 }
9342 }
9343 return ret;
9344 #endif
9345 #ifdef TARGET_NR_ssetmask /* not on alpha */
9346 case TARGET_NR_ssetmask:
9347 {
9348 sigset_t set, oset;
9349 abi_ulong target_set = arg1;
9350 target_to_host_old_sigset(&set, &target_set);
9351 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
9352 if (!ret) {
9353 host_to_target_old_sigset(&target_set, &oset);
9354 ret = target_set;
9355 }
9356 }
9357 return ret;
9358 #endif
9359 #ifdef TARGET_NR_sigprocmask
9360 case TARGET_NR_sigprocmask:
9361 {
9362 #if defined(TARGET_ALPHA)
9363 sigset_t set, oldset;
9364 abi_ulong mask;
9365 int how;
9366
9367 switch (arg1) {
9368 case TARGET_SIG_BLOCK:
9369 how = SIG_BLOCK;
9370 break;
9371 case TARGET_SIG_UNBLOCK:
9372 how = SIG_UNBLOCK;
9373 break;
9374 case TARGET_SIG_SETMASK:
9375 how = SIG_SETMASK;
9376 break;
9377 default:
9378 return -TARGET_EINVAL;
9379 }
9380 mask = arg2;
9381 target_to_host_old_sigset(&set, &mask);
9382
9383 ret = do_sigprocmask(how, &set, &oldset);
9384 if (!is_error(ret)) {
9385 host_to_target_old_sigset(&mask, &oldset);
9386 ret = mask;
9387 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
9388 }
9389 #else
9390 sigset_t set, oldset, *set_ptr;
9391 int how;
9392
9393 if (arg2) {
9394 switch (arg1) {
9395 case TARGET_SIG_BLOCK:
9396 how = SIG_BLOCK;
9397 break;
9398 case TARGET_SIG_UNBLOCK:
9399 how = SIG_UNBLOCK;
9400 break;
9401 case TARGET_SIG_SETMASK:
9402 how = SIG_SETMASK;
9403 break;
9404 default:
9405 return -TARGET_EINVAL;
9406 }
9407 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
9408 return -TARGET_EFAULT;
9409 target_to_host_old_sigset(&set, p);
9410 unlock_user(p, arg2, 0);
9411 set_ptr = &set;
9412 } else {
9413 how = 0;
9414 set_ptr = NULL;
9415 }
9416 ret = do_sigprocmask(how, set_ptr, &oldset);
9417 if (!is_error(ret) && arg3) {
9418 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9419 return -TARGET_EFAULT;
9420 host_to_target_old_sigset(p, &oldset);
9421 unlock_user(p, arg3, sizeof(target_sigset_t));
9422 }
9423 #endif
9424 }
9425 return ret;
9426 #endif
9427 case TARGET_NR_rt_sigprocmask:
9428 {
9429 int how = arg1;
9430 sigset_t set, oldset, *set_ptr;
9431
9432 if (arg4 != sizeof(target_sigset_t)) {
9433 return -TARGET_EINVAL;
9434 }
9435
9436 if (arg2) {
9437 switch(how) {
9438 case TARGET_SIG_BLOCK:
9439 how = SIG_BLOCK;
9440 break;
9441 case TARGET_SIG_UNBLOCK:
9442 how = SIG_UNBLOCK;
9443 break;
9444 case TARGET_SIG_SETMASK:
9445 how = SIG_SETMASK;
9446 break;
9447 default:
9448 return -TARGET_EINVAL;
9449 }
9450 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
9451 return -TARGET_EFAULT;
9452 target_to_host_sigset(&set, p);
9453 unlock_user(p, arg2, 0);
9454 set_ptr = &set;
9455 } else {
9456 how = 0;
9457 set_ptr = NULL;
9458 }
9459 ret = do_sigprocmask(how, set_ptr, &oldset);
9460 if (!is_error(ret) && arg3) {
9461 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
9462 return -TARGET_EFAULT;
9463 host_to_target_sigset(p, &oldset);
9464 unlock_user(p, arg3, sizeof(target_sigset_t));
9465 }
9466 }
9467 return ret;
9468 #ifdef TARGET_NR_sigpending
9469 case TARGET_NR_sigpending:
9470 {
9471 sigset_t set;
9472 ret = get_errno(sigpending(&set));
9473 if (!is_error(ret)) {
9474 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9475 return -TARGET_EFAULT;
9476 host_to_target_old_sigset(p, &set);
9477 unlock_user(p, arg1, sizeof(target_sigset_t));
9478 }
9479 }
9480 return ret;
9481 #endif
9482 case TARGET_NR_rt_sigpending:
9483 {
9484 sigset_t set;
9485
9486 /* Yes, this check is >, not != like most. We follow the kernel's
9487 * logic and it does it like this because it implements
9488 * NR_sigpending through the same code path, and in that case
9489 * the old_sigset_t is smaller in size.
9490 */
9491 if (arg2 > sizeof(target_sigset_t)) {
9492 return -TARGET_EINVAL;
9493 }
9494
9495 ret = get_errno(sigpending(&set));
9496 if (!is_error(ret)) {
9497 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
9498 return -TARGET_EFAULT;
9499 host_to_target_sigset(p, &set);
9500 unlock_user(p, arg1, sizeof(target_sigset_t));
9501 }
9502 }
9503 return ret;
9504 #ifdef TARGET_NR_sigsuspend
9505 case TARGET_NR_sigsuspend:
9506 {
9507 TaskState *ts = cpu->opaque;
9508 #if defined(TARGET_ALPHA)
9509 abi_ulong mask = arg1;
9510 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
9511 #else
9512 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9513 return -TARGET_EFAULT;
9514 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
9515 unlock_user(p, arg1, 0);
9516 #endif
9517 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
9518 SIGSET_T_SIZE));
9519 if (ret != -QEMU_ERESTARTSYS) {
9520 ts->in_sigsuspend = 1;
9521 }
9522 }
9523 return ret;
9524 #endif
9525 case TARGET_NR_rt_sigsuspend:
9526 {
9527 TaskState *ts = cpu->opaque;
9528
9529 if (arg2 != sizeof(target_sigset_t)) {
9530 return -TARGET_EINVAL;
9531 }
9532 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9533 return -TARGET_EFAULT;
9534 target_to_host_sigset(&ts->sigsuspend_mask, p);
9535 unlock_user(p, arg1, 0);
9536 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
9537 SIGSET_T_SIZE));
9538 if (ret != -QEMU_ERESTARTSYS) {
9539 ts->in_sigsuspend = 1;
9540 }
9541 }
9542 return ret;
9543 #ifdef TARGET_NR_rt_sigtimedwait
9544 case TARGET_NR_rt_sigtimedwait:
9545 {
9546 sigset_t set;
9547 struct timespec uts, *puts;
9548 siginfo_t uinfo;
9549
9550 if (arg4 != sizeof(target_sigset_t)) {
9551 return -TARGET_EINVAL;
9552 }
9553
9554 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
9555 return -TARGET_EFAULT;
9556 target_to_host_sigset(&set, p);
9557 unlock_user(p, arg1, 0);
9558 if (arg3) {
9559 puts = &uts;
9560 if (target_to_host_timespec(puts, arg3)) {
9561 return -TARGET_EFAULT;
9562 }
9563 } else {
9564 puts = NULL;
9565 }
9566 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9567 SIGSET_T_SIZE));
9568 if (!is_error(ret)) {
9569 if (arg2) {
9570 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
9571 0);
9572 if (!p) {
9573 return -TARGET_EFAULT;
9574 }
9575 host_to_target_siginfo(p, &uinfo);
9576 unlock_user(p, arg2, sizeof(target_siginfo_t));
9577 }
9578 ret = host_to_target_signal(ret);
9579 }
9580 }
9581 return ret;
9582 #endif
9583 #ifdef TARGET_NR_rt_sigtimedwait_time64
9584 case TARGET_NR_rt_sigtimedwait_time64:
9585 {
9586 sigset_t set;
9587 struct timespec uts, *puts;
9588 siginfo_t uinfo;
9589
9590 if (arg4 != sizeof(target_sigset_t)) {
9591 return -TARGET_EINVAL;
9592 }
9593
9594 p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
9595 if (!p) {
9596 return -TARGET_EFAULT;
9597 }
9598 target_to_host_sigset(&set, p);
9599 unlock_user(p, arg1, 0);
9600 if (arg3) {
9601 puts = &uts;
9602 if (target_to_host_timespec64(puts, arg3)) {
9603 return -TARGET_EFAULT;
9604 }
9605 } else {
9606 puts = NULL;
9607 }
9608 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
9609 SIGSET_T_SIZE));
9610 if (!is_error(ret)) {
9611 if (arg2) {
9612 p = lock_user(VERIFY_WRITE, arg2,
9613 sizeof(target_siginfo_t), 0);
9614 if (!p) {
9615 return -TARGET_EFAULT;
9616 }
9617 host_to_target_siginfo(p, &uinfo);
9618 unlock_user(p, arg2, sizeof(target_siginfo_t));
9619 }
9620 ret = host_to_target_signal(ret);
9621 }
9622 }
9623 return ret;
9624 #endif
9625 case TARGET_NR_rt_sigqueueinfo:
9626 {
9627 siginfo_t uinfo;
9628
9629 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
9630 if (!p) {
9631 return -TARGET_EFAULT;
9632 }
9633 target_to_host_siginfo(&uinfo, p);
9634 unlock_user(p, arg3, 0);
9635 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
9636 }
9637 return ret;
9638 case TARGET_NR_rt_tgsigqueueinfo:
9639 {
9640 siginfo_t uinfo;
9641
9642 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
9643 if (!p) {
9644 return -TARGET_EFAULT;
9645 }
9646 target_to_host_siginfo(&uinfo, p);
9647 unlock_user(p, arg4, 0);
9648 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
9649 }
9650 return ret;
9651 #ifdef TARGET_NR_sigreturn
9652 case TARGET_NR_sigreturn:
9653 if (block_signals()) {
9654 return -QEMU_ERESTARTSYS;
9655 }
9656 return do_sigreturn(cpu_env);
9657 #endif
9658 case TARGET_NR_rt_sigreturn:
9659 if (block_signals()) {
9660 return -QEMU_ERESTARTSYS;
9661 }
9662 return do_rt_sigreturn(cpu_env);
9663 case TARGET_NR_sethostname:
9664 if (!(p = lock_user_string(arg1)))
9665 return -TARGET_EFAULT;
9666 ret = get_errno(sethostname(p, arg2));
9667 unlock_user(p, arg1, 0);
9668 return ret;
9669 #ifdef TARGET_NR_setrlimit
9670 case TARGET_NR_setrlimit:
9671 {
9672 int resource = target_to_host_resource(arg1);
9673 struct target_rlimit *target_rlim;
9674 struct rlimit rlim;
9675 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
9676 return -TARGET_EFAULT;
9677 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
9678 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
9679 unlock_user_struct(target_rlim, arg2, 0);
9680 /*
9681 * If we just passed through resource limit settings for memory then
9682 * they would also apply to QEMU's own allocations, and QEMU will
9683 * crash or hang or die if its allocations fail. Ideally we would
9684 * track the guest allocations in QEMU and apply the limits ourselves.
9685 * For now, just tell the guest the call succeeded but don't actually
9686 * limit anything.
9687 */
9688 if (resource != RLIMIT_AS &&
9689 resource != RLIMIT_DATA &&
9690 resource != RLIMIT_STACK) {
9691 return get_errno(setrlimit(resource, &rlim));
9692 } else {
9693 return 0;
9694 }
9695 }
9696 #endif
9697 #ifdef TARGET_NR_getrlimit
9698 case TARGET_NR_getrlimit:
9699 {
9700 int resource = target_to_host_resource(arg1);
9701 struct target_rlimit *target_rlim;
9702 struct rlimit rlim;
9703
9704 ret = get_errno(getrlimit(resource, &rlim));
9705 if (!is_error(ret)) {
9706 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
9707 return -TARGET_EFAULT;
9708 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
9709 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
9710 unlock_user_struct(target_rlim, arg2, 1);
9711 }
9712 }
9713 return ret;
9714 #endif
9715 case TARGET_NR_getrusage:
9716 {
9717 struct rusage rusage;
9718 ret = get_errno(getrusage(arg1, &rusage));
9719 if (!is_error(ret)) {
9720 ret = host_to_target_rusage(arg2, &rusage);
9721 }
9722 }
9723 return ret;
9724 #if defined(TARGET_NR_gettimeofday)
9725 case TARGET_NR_gettimeofday:
9726 {
9727 struct timeval tv;
9728 struct timezone tz;
9729
9730 ret = get_errno(gettimeofday(&tv, &tz));
9731 if (!is_error(ret)) {
9732 if (arg1 && copy_to_user_timeval(arg1, &tv)) {
9733 return -TARGET_EFAULT;
9734 }
9735 if (arg2 && copy_to_user_timezone(arg2, &tz)) {
9736 return -TARGET_EFAULT;
9737 }
9738 }
9739 }
9740 return ret;
9741 #endif
9742 #if defined(TARGET_NR_settimeofday)
9743 case TARGET_NR_settimeofday:
9744 {
9745 struct timeval tv, *ptv = NULL;
9746 struct timezone tz, *ptz = NULL;
9747
9748 if (arg1) {
9749 if (copy_from_user_timeval(&tv, arg1)) {
9750 return -TARGET_EFAULT;
9751 }
9752 ptv = &tv;
9753 }
9754
9755 if (arg2) {
9756 if (copy_from_user_timezone(&tz, arg2)) {
9757 return -TARGET_EFAULT;
9758 }
9759 ptz = &tz;
9760 }
9761
9762 return get_errno(settimeofday(ptv, ptz));
9763 }
9764 #endif
9765 #if defined(TARGET_NR_select)
9766 case TARGET_NR_select:
9767 #if defined(TARGET_WANT_NI_OLD_SELECT)
9768 /* some architectures used to have old_select here
9769 * but now ENOSYS it.
9770 */
9771 ret = -TARGET_ENOSYS;
9772 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
9773 ret = do_old_select(arg1);
9774 #else
9775 ret = do_select(arg1, arg2, arg3, arg4, arg5);
9776 #endif
9777 return ret;
9778 #endif
9779 #ifdef TARGET_NR_pselect6
9780 case TARGET_NR_pselect6:
9781 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, false);
9782 #endif
9783 #ifdef TARGET_NR_pselect6_time64
9784 case TARGET_NR_pselect6_time64:
9785 return do_pselect6(arg1, arg2, arg3, arg4, arg5, arg6, true);
9786 #endif
9787 #ifdef TARGET_NR_symlink
9788 case TARGET_NR_symlink:
9789 {
9790 void *p2;
9791 p = lock_user_string(arg1);
9792 p2 = lock_user_string(arg2);
9793 if (!p || !p2)
9794 ret = -TARGET_EFAULT;
9795 else
9796 ret = get_errno(symlink(p, p2));
9797 unlock_user(p2, arg2, 0);
9798 unlock_user(p, arg1, 0);
9799 }
9800 return ret;
9801 #endif
9802 #if defined(TARGET_NR_symlinkat)
9803 case TARGET_NR_symlinkat:
9804 {
9805 void *p2;
9806 p = lock_user_string(arg1);
9807 p2 = lock_user_string(arg3);
9808 if (!p || !p2)
9809 ret = -TARGET_EFAULT;
9810 else
9811 ret = get_errno(symlinkat(p, arg2, p2));
9812 unlock_user(p2, arg3, 0);
9813 unlock_user(p, arg1, 0);
9814 }
9815 return ret;
9816 #endif
9817 #ifdef TARGET_NR_readlink
9818 case TARGET_NR_readlink:
9819 {
9820 void *p2;
9821 p = lock_user_string(arg1);
9822 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9823 if (!p || !p2) {
9824 ret = -TARGET_EFAULT;
9825 } else if (!arg3) {
9826 /* Short circuit this for the magic exe check. */
9827 ret = -TARGET_EINVAL;
9828 } else if (is_proc_myself((const char *)p, "exe")) {
9829 char real[PATH_MAX], *temp;
9830 temp = realpath(exec_path, real);
9831 /* Return value is # of bytes that we wrote to the buffer. */
9832 if (temp == NULL) {
9833 ret = get_errno(-1);
9834 } else {
9835 /* Don't worry about sign mismatch as earlier mapping
9836 * logic would have thrown a bad address error. */
9837 ret = MIN(strlen(real), arg3);
9838 /* We cannot NUL terminate the string. */
9839 memcpy(p2, real, ret);
9840 }
9841 } else {
9842 ret = get_errno(readlink(path(p), p2, arg3));
9843 }
9844 unlock_user(p2, arg2, ret);
9845 unlock_user(p, arg1, 0);
9846 }
9847 return ret;
9848 #endif
9849 #if defined(TARGET_NR_readlinkat)
9850 case TARGET_NR_readlinkat:
9851 {
9852 void *p2;
9853 p = lock_user_string(arg2);
9854 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
9855 if (!p || !p2) {
9856 ret = -TARGET_EFAULT;
9857 } else if (is_proc_myself((const char *)p, "exe")) {
9858 char real[PATH_MAX], *temp;
9859 temp = realpath(exec_path, real);
9860 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
9861 snprintf((char *)p2, arg4, "%s", real);
9862 } else {
9863 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
9864 }
9865 unlock_user(p2, arg3, ret);
9866 unlock_user(p, arg2, 0);
9867 }
9868 return ret;
9869 #endif
9870 #ifdef TARGET_NR_swapon
9871 case TARGET_NR_swapon:
9872 if (!(p = lock_user_string(arg1)))
9873 return -TARGET_EFAULT;
9874 ret = get_errno(swapon(p, arg2));
9875 unlock_user(p, arg1, 0);
9876 return ret;
9877 #endif
9878 case TARGET_NR_reboot:
9879 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
9880 /* arg4 must be ignored in all other cases */
9881 p = lock_user_string(arg4);
9882 if (!p) {
9883 return -TARGET_EFAULT;
9884 }
9885 ret = get_errno(reboot(arg1, arg2, arg3, p));
9886 unlock_user(p, arg4, 0);
9887 } else {
9888 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
9889 }
9890 return ret;
9891 #ifdef TARGET_NR_mmap
9892 case TARGET_NR_mmap:
9893 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
9894 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
9895 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
9896 || defined(TARGET_S390X)
9897 {
9898 abi_ulong *v;
9899 abi_ulong v1, v2, v3, v4, v5, v6;
9900 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
9901 return -TARGET_EFAULT;
9902 v1 = tswapal(v[0]);
9903 v2 = tswapal(v[1]);
9904 v3 = tswapal(v[2]);
9905 v4 = tswapal(v[3]);
9906 v5 = tswapal(v[4]);
9907 v6 = tswapal(v[5]);
9908 unlock_user(v, arg1, 0);
9909 ret = get_errno(target_mmap(v1, v2, v3,
9910 target_to_host_bitmask(v4, mmap_flags_tbl),
9911 v5, v6));
9912 }
9913 #else
9914 /* mmap pointers are always untagged */
9915 ret = get_errno(target_mmap(arg1, arg2, arg3,
9916 target_to_host_bitmask(arg4, mmap_flags_tbl),
9917 arg5,
9918 arg6));
9919 #endif
9920 return ret;
9921 #endif
9922 #ifdef TARGET_NR_mmap2
9923 case TARGET_NR_mmap2:
9924 #ifndef MMAP_SHIFT
9925 #define MMAP_SHIFT 12
9926 #endif
9927 ret = target_mmap(arg1, arg2, arg3,
9928 target_to_host_bitmask(arg4, mmap_flags_tbl),
9929 arg5, arg6 << MMAP_SHIFT);
9930 return get_errno(ret);
9931 #endif
9932 case TARGET_NR_munmap:
9933 arg1 = cpu_untagged_addr(cpu, arg1);
9934 return get_errno(target_munmap(arg1, arg2));
9935 case TARGET_NR_mprotect:
9936 arg1 = cpu_untagged_addr(cpu, arg1);
9937 {
9938 TaskState *ts = cpu->opaque;
9939 /* Special hack to detect libc making the stack executable. */
9940 if ((arg3 & PROT_GROWSDOWN)
9941 && arg1 >= ts->info->stack_limit
9942 && arg1 <= ts->info->start_stack) {
9943 arg3 &= ~PROT_GROWSDOWN;
9944 arg2 = arg2 + arg1 - ts->info->stack_limit;
9945 arg1 = ts->info->stack_limit;
9946 }
9947 }
9948 return get_errno(target_mprotect(arg1, arg2, arg3));
9949 #ifdef TARGET_NR_mremap
9950 case TARGET_NR_mremap:
9951 arg1 = cpu_untagged_addr(cpu, arg1);
9952 /* mremap new_addr (arg5) is always untagged */
9953 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
9954 #endif
9955 /* ??? msync/mlock/munlock are broken for softmmu. */
9956 #ifdef TARGET_NR_msync
9957 case TARGET_NR_msync:
9958 return get_errno(msync(g2h(cpu, arg1), arg2, arg3));
9959 #endif
9960 #ifdef TARGET_NR_mlock
9961 case TARGET_NR_mlock:
9962 return get_errno(mlock(g2h(cpu, arg1), arg2));
9963 #endif
9964 #ifdef TARGET_NR_munlock
9965 case TARGET_NR_munlock:
9966 return get_errno(munlock(g2h(cpu, arg1), arg2));
9967 #endif
9968 #ifdef TARGET_NR_mlockall
9969 case TARGET_NR_mlockall:
9970 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
9971 #endif
9972 #ifdef TARGET_NR_munlockall
9973 case TARGET_NR_munlockall:
9974 return get_errno(munlockall());
9975 #endif
9976 #ifdef TARGET_NR_truncate
9977 case TARGET_NR_truncate:
9978 if (!(p = lock_user_string(arg1)))
9979 return -TARGET_EFAULT;
9980 ret = get_errno(truncate(p, arg2));
9981 unlock_user(p, arg1, 0);
9982 return ret;
9983 #endif
9984 #ifdef TARGET_NR_ftruncate
9985 case TARGET_NR_ftruncate:
9986 return get_errno(ftruncate(arg1, arg2));
9987 #endif
9988 case TARGET_NR_fchmod:
9989 return get_errno(fchmod(arg1, arg2));
9990 #if defined(TARGET_NR_fchmodat)
9991 case TARGET_NR_fchmodat:
9992 if (!(p = lock_user_string(arg2)))
9993 return -TARGET_EFAULT;
9994 ret = get_errno(fchmodat(arg1, p, arg3, 0));
9995 unlock_user(p, arg2, 0);
9996 return ret;
9997 #endif
9998 case TARGET_NR_getpriority:
9999 /* Note that negative values are valid for getpriority, so we must
10000 differentiate based on errno settings. */
10001 errno = 0;
10002 ret = getpriority(arg1, arg2);
10003 if (ret == -1 && errno != 0) {
10004 return -host_to_target_errno(errno);
10005 }
10006 #ifdef TARGET_ALPHA
10007 /* Return value is the unbiased priority. Signal no error. */
10008 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
10009 #else
10010 /* Return value is a biased priority to avoid negative numbers. */
10011 ret = 20 - ret;
10012 #endif
10013 return ret;
10014 case TARGET_NR_setpriority:
10015 return get_errno(setpriority(arg1, arg2, arg3));
10016 #ifdef TARGET_NR_statfs
10017 case TARGET_NR_statfs:
10018 if (!(p = lock_user_string(arg1))) {
10019 return -TARGET_EFAULT;
10020 }
10021 ret = get_errno(statfs(path(p), &stfs));
10022 unlock_user(p, arg1, 0);
10023 convert_statfs:
10024 if (!is_error(ret)) {
10025 struct target_statfs *target_stfs;
10026
10027 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
10028 return -TARGET_EFAULT;
10029 __put_user(stfs.f_type, &target_stfs->f_type);
10030 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10031 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10032 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10033 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10034 __put_user(stfs.f_files, &target_stfs->f_files);
10035 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10036 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10037 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10038 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10039 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10040 #ifdef _STATFS_F_FLAGS
10041 __put_user(stfs.f_flags, &target_stfs->f_flags);
10042 #else
10043 __put_user(0, &target_stfs->f_flags);
10044 #endif
10045 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10046 unlock_user_struct(target_stfs, arg2, 1);
10047 }
10048 return ret;
10049 #endif
10050 #ifdef TARGET_NR_fstatfs
10051 case TARGET_NR_fstatfs:
10052 ret = get_errno(fstatfs(arg1, &stfs));
10053 goto convert_statfs;
10054 #endif
10055 #ifdef TARGET_NR_statfs64
10056 case TARGET_NR_statfs64:
10057 if (!(p = lock_user_string(arg1))) {
10058 return -TARGET_EFAULT;
10059 }
10060 ret = get_errno(statfs(path(p), &stfs));
10061 unlock_user(p, arg1, 0);
10062 convert_statfs64:
10063 if (!is_error(ret)) {
10064 struct target_statfs64 *target_stfs;
10065
10066 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
10067 return -TARGET_EFAULT;
10068 __put_user(stfs.f_type, &target_stfs->f_type);
10069 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
10070 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
10071 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
10072 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
10073 __put_user(stfs.f_files, &target_stfs->f_files);
10074 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
10075 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
10076 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
10077 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
10078 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
10079 #ifdef _STATFS_F_FLAGS
10080 __put_user(stfs.f_flags, &target_stfs->f_flags);
10081 #else
10082 __put_user(0, &target_stfs->f_flags);
10083 #endif
10084 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
10085 unlock_user_struct(target_stfs, arg3, 1);
10086 }
10087 return ret;
10088 case TARGET_NR_fstatfs64:
10089 ret = get_errno(fstatfs(arg1, &stfs));
10090 goto convert_statfs64;
10091 #endif
10092 #ifdef TARGET_NR_socketcall
10093 case TARGET_NR_socketcall:
10094 return do_socketcall(arg1, arg2);
10095 #endif
10096 #ifdef TARGET_NR_accept
10097 case TARGET_NR_accept:
10098 return do_accept4(arg1, arg2, arg3, 0);
10099 #endif
10100 #ifdef TARGET_NR_accept4
10101 case TARGET_NR_accept4:
10102 return do_accept4(arg1, arg2, arg3, arg4);
10103 #endif
10104 #ifdef TARGET_NR_bind
10105 case TARGET_NR_bind:
10106 return do_bind(arg1, arg2, arg3);
10107 #endif
10108 #ifdef TARGET_NR_connect
10109 case TARGET_NR_connect:
10110 return do_connect(arg1, arg2, arg3);
10111 #endif
10112 #ifdef TARGET_NR_getpeername
10113 case TARGET_NR_getpeername:
10114 return do_getpeername(arg1, arg2, arg3);
10115 #endif
10116 #ifdef TARGET_NR_getsockname
10117 case TARGET_NR_getsockname:
10118 return do_getsockname(arg1, arg2, arg3);
10119 #endif
10120 #ifdef TARGET_NR_getsockopt
10121 case TARGET_NR_getsockopt:
10122 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
10123 #endif
10124 #ifdef TARGET_NR_listen
10125 case TARGET_NR_listen:
10126 return get_errno(listen(arg1, arg2));
10127 #endif
10128 #ifdef TARGET_NR_recv
10129 case TARGET_NR_recv:
10130 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
10131 #endif
10132 #ifdef TARGET_NR_recvfrom
10133 case TARGET_NR_recvfrom:
10134 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
10135 #endif
10136 #ifdef TARGET_NR_recvmsg
10137 case TARGET_NR_recvmsg:
10138 return do_sendrecvmsg(arg1, arg2, arg3, 0);
10139 #endif
10140 #ifdef TARGET_NR_send
10141 case TARGET_NR_send:
10142 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
10143 #endif
10144 #ifdef TARGET_NR_sendmsg
10145 case TARGET_NR_sendmsg:
10146 return do_sendrecvmsg(arg1, arg2, arg3, 1);
10147 #endif
10148 #ifdef TARGET_NR_sendmmsg
10149 case TARGET_NR_sendmmsg:
10150 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
10151 #endif
10152 #ifdef TARGET_NR_recvmmsg
10153 case TARGET_NR_recvmmsg:
10154 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
10155 #endif
10156 #ifdef TARGET_NR_sendto
10157 case TARGET_NR_sendto:
10158 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
10159 #endif
10160 #ifdef TARGET_NR_shutdown
10161 case TARGET_NR_shutdown:
10162 return get_errno(shutdown(arg1, arg2));
10163 #endif
10164 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
10165 case TARGET_NR_getrandom:
10166 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
10167 if (!p) {
10168 return -TARGET_EFAULT;
10169 }
10170 ret = get_errno(getrandom(p, arg2, arg3));
10171 unlock_user(p, arg1, ret);
10172 return ret;
10173 #endif
10174 #ifdef TARGET_NR_socket
10175 case TARGET_NR_socket:
10176 return do_socket(arg1, arg2, arg3);
10177 #endif
10178 #ifdef TARGET_NR_socketpair
10179 case TARGET_NR_socketpair:
10180 return do_socketpair(arg1, arg2, arg3, arg4);
10181 #endif
10182 #ifdef TARGET_NR_setsockopt
10183 case TARGET_NR_setsockopt:
10184 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
10185 #endif
10186 #if defined(TARGET_NR_syslog)
10187 case TARGET_NR_syslog:
10188 {
10189 int len = arg2;
10190
10191 switch (arg1) {
10192 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
10193 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
10194 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
10195 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
10196 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
10197 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
10198 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
10199 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
10200 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
10201 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
10202 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
10203 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
10204 {
10205 if (len < 0) {
10206 return -TARGET_EINVAL;
10207 }
10208 if (len == 0) {
10209 return 0;
10210 }
10211 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10212 if (!p) {
10213 return -TARGET_EFAULT;
10214 }
10215 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
10216 unlock_user(p, arg2, arg3);
10217 }
10218 return ret;
10219 default:
10220 return -TARGET_EINVAL;
10221 }
10222 }
10223 break;
10224 #endif
10225 case TARGET_NR_setitimer:
10226 {
10227 struct itimerval value, ovalue, *pvalue;
10228
10229 if (arg2) {
10230 pvalue = &value;
10231 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
10232 || copy_from_user_timeval(&pvalue->it_value,
10233 arg2 + sizeof(struct target_timeval)))
10234 return -TARGET_EFAULT;
10235 } else {
10236 pvalue = NULL;
10237 }
10238 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
10239 if (!is_error(ret) && arg3) {
10240 if (copy_to_user_timeval(arg3,
10241 &ovalue.it_interval)
10242 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
10243 &ovalue.it_value))
10244 return -TARGET_EFAULT;
10245 }
10246 }
10247 return ret;
10248 case TARGET_NR_getitimer:
10249 {
10250 struct itimerval value;
10251
10252 ret = get_errno(getitimer(arg1, &value));
10253 if (!is_error(ret) && arg2) {
10254 if (copy_to_user_timeval(arg2,
10255 &value.it_interval)
10256 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
10257 &value.it_value))
10258 return -TARGET_EFAULT;
10259 }
10260 }
10261 return ret;
10262 #ifdef TARGET_NR_stat
10263 case TARGET_NR_stat:
10264 if (!(p = lock_user_string(arg1))) {
10265 return -TARGET_EFAULT;
10266 }
10267 ret = get_errno(stat(path(p), &st));
10268 unlock_user(p, arg1, 0);
10269 goto do_stat;
10270 #endif
10271 #ifdef TARGET_NR_lstat
10272 case TARGET_NR_lstat:
10273 if (!(p = lock_user_string(arg1))) {
10274 return -TARGET_EFAULT;
10275 }
10276 ret = get_errno(lstat(path(p), &st));
10277 unlock_user(p, arg1, 0);
10278 goto do_stat;
10279 #endif
10280 #ifdef TARGET_NR_fstat
10281 case TARGET_NR_fstat:
10282 {
10283 ret = get_errno(fstat(arg1, &st));
10284 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
10285 do_stat:
10286 #endif
10287 if (!is_error(ret)) {
10288 struct target_stat *target_st;
10289
10290 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
10291 return -TARGET_EFAULT;
10292 memset(target_st, 0, sizeof(*target_st));
10293 __put_user(st.st_dev, &target_st->st_dev);
10294 __put_user(st.st_ino, &target_st->st_ino);
10295 __put_user(st.st_mode, &target_st->st_mode);
10296 __put_user(st.st_uid, &target_st->st_uid);
10297 __put_user(st.st_gid, &target_st->st_gid);
10298 __put_user(st.st_nlink, &target_st->st_nlink);
10299 __put_user(st.st_rdev, &target_st->st_rdev);
10300 __put_user(st.st_size, &target_st->st_size);
10301 __put_user(st.st_blksize, &target_st->st_blksize);
10302 __put_user(st.st_blocks, &target_st->st_blocks);
10303 __put_user(st.st_atime, &target_st->target_st_atime);
10304 __put_user(st.st_mtime, &target_st->target_st_mtime);
10305 __put_user(st.st_ctime, &target_st->target_st_ctime);
10306 #if defined(HAVE_STRUCT_STAT_ST_ATIM) && defined(TARGET_STAT_HAVE_NSEC)
10307 __put_user(st.st_atim.tv_nsec,
10308 &target_st->target_st_atime_nsec);
10309 __put_user(st.st_mtim.tv_nsec,
10310 &target_st->target_st_mtime_nsec);
10311 __put_user(st.st_ctim.tv_nsec,
10312 &target_st->target_st_ctime_nsec);
10313 #endif
10314 unlock_user_struct(target_st, arg2, 1);
10315 }
10316 }
10317 return ret;
10318 #endif
10319 case TARGET_NR_vhangup:
10320 return get_errno(vhangup());
10321 #ifdef TARGET_NR_syscall
10322 case TARGET_NR_syscall:
10323 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
10324 arg6, arg7, arg8, 0);
10325 #endif
10326 #if defined(TARGET_NR_wait4)
10327 case TARGET_NR_wait4:
10328 {
10329 int status;
10330 abi_long status_ptr = arg2;
10331 struct rusage rusage, *rusage_ptr;
10332 abi_ulong target_rusage = arg4;
10333 abi_long rusage_err;
10334 if (target_rusage)
10335 rusage_ptr = &rusage;
10336 else
10337 rusage_ptr = NULL;
10338 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
10339 if (!is_error(ret)) {
10340 if (status_ptr && ret) {
10341 status = host_to_target_waitstatus(status);
10342 if (put_user_s32(status, status_ptr))
10343 return -TARGET_EFAULT;
10344 }
10345 if (target_rusage) {
10346 rusage_err = host_to_target_rusage(target_rusage, &rusage);
10347 if (rusage_err) {
10348 ret = rusage_err;
10349 }
10350 }
10351 }
10352 }
10353 return ret;
10354 #endif
10355 #ifdef TARGET_NR_swapoff
10356 case TARGET_NR_swapoff:
10357 if (!(p = lock_user_string(arg1)))
10358 return -TARGET_EFAULT;
10359 ret = get_errno(swapoff(p));
10360 unlock_user(p, arg1, 0);
10361 return ret;
10362 #endif
10363 case TARGET_NR_sysinfo:
10364 {
10365 struct target_sysinfo *target_value;
10366 struct sysinfo value;
10367 ret = get_errno(sysinfo(&value));
10368 if (!is_error(ret) && arg1)
10369 {
10370 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
10371 return -TARGET_EFAULT;
10372 __put_user(value.uptime, &target_value->uptime);
10373 __put_user(value.loads[0], &target_value->loads[0]);
10374 __put_user(value.loads[1], &target_value->loads[1]);
10375 __put_user(value.loads[2], &target_value->loads[2]);
10376 __put_user(value.totalram, &target_value->totalram);
10377 __put_user(value.freeram, &target_value->freeram);
10378 __put_user(value.sharedram, &target_value->sharedram);
10379 __put_user(value.bufferram, &target_value->bufferram);
10380 __put_user(value.totalswap, &target_value->totalswap);
10381 __put_user(value.freeswap, &target_value->freeswap);
10382 __put_user(value.procs, &target_value->procs);
10383 __put_user(value.totalhigh, &target_value->totalhigh);
10384 __put_user(value.freehigh, &target_value->freehigh);
10385 __put_user(value.mem_unit, &target_value->mem_unit);
10386 unlock_user_struct(target_value, arg1, 1);
10387 }
10388 }
10389 return ret;
10390 #ifdef TARGET_NR_ipc
10391 case TARGET_NR_ipc:
10392 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
10393 #endif
10394 #ifdef TARGET_NR_semget
10395 case TARGET_NR_semget:
10396 return get_errno(semget(arg1, arg2, arg3));
10397 #endif
10398 #ifdef TARGET_NR_semop
10399 case TARGET_NR_semop:
10400 return do_semtimedop(arg1, arg2, arg3, 0, false);
10401 #endif
10402 #ifdef TARGET_NR_semtimedop
10403 case TARGET_NR_semtimedop:
10404 return do_semtimedop(arg1, arg2, arg3, arg4, false);
10405 #endif
10406 #ifdef TARGET_NR_semtimedop_time64
10407 case TARGET_NR_semtimedop_time64:
10408 return do_semtimedop(arg1, arg2, arg3, arg4, true);
10409 #endif
10410 #ifdef TARGET_NR_semctl
10411 case TARGET_NR_semctl:
10412 return do_semctl(arg1, arg2, arg3, arg4);
10413 #endif
10414 #ifdef TARGET_NR_msgctl
10415 case TARGET_NR_msgctl:
10416 return do_msgctl(arg1, arg2, arg3);
10417 #endif
10418 #ifdef TARGET_NR_msgget
10419 case TARGET_NR_msgget:
10420 return get_errno(msgget(arg1, arg2));
10421 #endif
10422 #ifdef TARGET_NR_msgrcv
10423 case TARGET_NR_msgrcv:
10424 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
10425 #endif
10426 #ifdef TARGET_NR_msgsnd
10427 case TARGET_NR_msgsnd:
10428 return do_msgsnd(arg1, arg2, arg3, arg4);
10429 #endif
10430 #ifdef TARGET_NR_shmget
10431 case TARGET_NR_shmget:
10432 return get_errno(shmget(arg1, arg2, arg3));
10433 #endif
10434 #ifdef TARGET_NR_shmctl
10435 case TARGET_NR_shmctl:
10436 return do_shmctl(arg1, arg2, arg3);
10437 #endif
10438 #ifdef TARGET_NR_shmat
10439 case TARGET_NR_shmat:
10440 return do_shmat(cpu_env, arg1, arg2, arg3);
10441 #endif
10442 #ifdef TARGET_NR_shmdt
10443 case TARGET_NR_shmdt:
10444 return do_shmdt(arg1);
10445 #endif
10446 case TARGET_NR_fsync:
10447 return get_errno(fsync(arg1));
10448 case TARGET_NR_clone:
10449 /* Linux manages to have three different orderings for its
10450 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
10451 * match the kernel's CONFIG_CLONE_* settings.
10452 * Microblaze is further special in that it uses a sixth
10453 * implicit argument to clone for the TLS pointer.
10454 */
10455 #if defined(TARGET_MICROBLAZE)
10456 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
10457 #elif defined(TARGET_CLONE_BACKWARDS)
10458 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
10459 #elif defined(TARGET_CLONE_BACKWARDS2)
10460 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
10461 #else
10462 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
10463 #endif
10464 return ret;
10465 #ifdef __NR_exit_group
10466 /* new thread calls */
10467 case TARGET_NR_exit_group:
10468 preexit_cleanup(cpu_env, arg1);
10469 return get_errno(exit_group(arg1));
10470 #endif
10471 case TARGET_NR_setdomainname:
10472 if (!(p = lock_user_string(arg1)))
10473 return -TARGET_EFAULT;
10474 ret = get_errno(setdomainname(p, arg2));
10475 unlock_user(p, arg1, 0);
10476 return ret;
10477 case TARGET_NR_uname:
10478 /* no need to transcode because we use the linux syscall */
10479 {
10480 struct new_utsname * buf;
10481
10482 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
10483 return -TARGET_EFAULT;
10484 ret = get_errno(sys_uname(buf));
10485 if (!is_error(ret)) {
10486 /* Overwrite the native machine name with whatever is being
10487 emulated. */
10488 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
10489 sizeof(buf->machine));
10490 /* Allow the user to override the reported release. */
10491 if (qemu_uname_release && *qemu_uname_release) {
10492 g_strlcpy(buf->release, qemu_uname_release,
10493 sizeof(buf->release));
10494 }
10495 }
10496 unlock_user_struct(buf, arg1, 1);
10497 }
10498 return ret;
10499 #ifdef TARGET_I386
10500 case TARGET_NR_modify_ldt:
10501 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
10502 #if !defined(TARGET_X86_64)
10503 case TARGET_NR_vm86:
10504 return do_vm86(cpu_env, arg1, arg2);
10505 #endif
10506 #endif
10507 #if defined(TARGET_NR_adjtimex)
10508 case TARGET_NR_adjtimex:
10509 {
10510 struct timex host_buf;
10511
10512 if (target_to_host_timex(&host_buf, arg1) != 0) {
10513 return -TARGET_EFAULT;
10514 }
10515 ret = get_errno(adjtimex(&host_buf));
10516 if (!is_error(ret)) {
10517 if (host_to_target_timex(arg1, &host_buf) != 0) {
10518 return -TARGET_EFAULT;
10519 }
10520 }
10521 }
10522 return ret;
10523 #endif
10524 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
10525 case TARGET_NR_clock_adjtime:
10526 {
10527 struct timex htx, *phtx = &htx;
10528
10529 if (target_to_host_timex(phtx, arg2) != 0) {
10530 return -TARGET_EFAULT;
10531 }
10532 ret = get_errno(clock_adjtime(arg1, phtx));
10533 if (!is_error(ret) && phtx) {
10534 if (host_to_target_timex(arg2, phtx) != 0) {
10535 return -TARGET_EFAULT;
10536 }
10537 }
10538 }
10539 return ret;
10540 #endif
10541 #if defined(TARGET_NR_clock_adjtime64) && defined(CONFIG_CLOCK_ADJTIME)
10542 case TARGET_NR_clock_adjtime64:
10543 {
10544 struct timex htx;
10545
10546 if (target_to_host_timex64(&htx, arg2) != 0) {
10547 return -TARGET_EFAULT;
10548 }
10549 ret = get_errno(clock_adjtime(arg1, &htx));
10550 if (!is_error(ret) && host_to_target_timex64(arg2, &htx)) {
10551 return -TARGET_EFAULT;
10552 }
10553 }
10554 return ret;
10555 #endif
10556 case TARGET_NR_getpgid:
10557 return get_errno(getpgid(arg1));
10558 case TARGET_NR_fchdir:
10559 return get_errno(fchdir(arg1));
10560 case TARGET_NR_personality:
10561 return get_errno(personality(arg1));
10562 #ifdef TARGET_NR__llseek /* Not on alpha */
10563 case TARGET_NR__llseek:
10564 {
10565 int64_t res;
10566 #if !defined(__NR_llseek)
10567 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
10568 if (res == -1) {
10569 ret = get_errno(res);
10570 } else {
10571 ret = 0;
10572 }
10573 #else
10574 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
10575 #endif
10576 if ((ret == 0) && put_user_s64(res, arg4)) {
10577 return -TARGET_EFAULT;
10578 }
10579 }
10580 return ret;
10581 #endif
10582 #ifdef TARGET_NR_getdents
10583 case TARGET_NR_getdents:
10584 return do_getdents(arg1, arg2, arg3);
10585 #endif /* TARGET_NR_getdents */
10586 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
10587 case TARGET_NR_getdents64:
10588 return do_getdents64(arg1, arg2, arg3);
10589 #endif /* TARGET_NR_getdents64 */
10590 #if defined(TARGET_NR__newselect)
10591 case TARGET_NR__newselect:
10592 return do_select(arg1, arg2, arg3, arg4, arg5);
10593 #endif
10594 #ifdef TARGET_NR_poll
10595 case TARGET_NR_poll:
10596 return do_ppoll(arg1, arg2, arg3, arg4, arg5, false, false);
10597 #endif
10598 #ifdef TARGET_NR_ppoll
10599 case TARGET_NR_ppoll:
10600 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, false);
10601 #endif
10602 #ifdef TARGET_NR_ppoll_time64
10603 case TARGET_NR_ppoll_time64:
10604 return do_ppoll(arg1, arg2, arg3, arg4, arg5, true, true);
10605 #endif
10606 case TARGET_NR_flock:
10607 /* NOTE: the flock constant seems to be the same for every
10608 Linux platform */
10609 return get_errno(safe_flock(arg1, arg2));
10610 case TARGET_NR_readv:
10611 {
10612 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10613 if (vec != NULL) {
10614 ret = get_errno(safe_readv(arg1, vec, arg3));
10615 unlock_iovec(vec, arg2, arg3, 1);
10616 } else {
10617 ret = -host_to_target_errno(errno);
10618 }
10619 }
10620 return ret;
10621 case TARGET_NR_writev:
10622 {
10623 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10624 if (vec != NULL) {
10625 ret = get_errno(safe_writev(arg1, vec, arg3));
10626 unlock_iovec(vec, arg2, arg3, 0);
10627 } else {
10628 ret = -host_to_target_errno(errno);
10629 }
10630 }
10631 return ret;
10632 #if defined(TARGET_NR_preadv)
10633 case TARGET_NR_preadv:
10634 {
10635 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10636 if (vec != NULL) {
10637 unsigned long low, high;
10638
10639 target_to_host_low_high(arg4, arg5, &low, &high);
10640 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
10641 unlock_iovec(vec, arg2, arg3, 1);
10642 } else {
10643 ret = -host_to_target_errno(errno);
10644 }
10645 }
10646 return ret;
10647 #endif
10648 #if defined(TARGET_NR_pwritev)
10649 case TARGET_NR_pwritev:
10650 {
10651 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10652 if (vec != NULL) {
10653 unsigned long low, high;
10654
10655 target_to_host_low_high(arg4, arg5, &low, &high);
10656 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
10657 unlock_iovec(vec, arg2, arg3, 0);
10658 } else {
10659 ret = -host_to_target_errno(errno);
10660 }
10661 }
10662 return ret;
10663 #endif
10664 case TARGET_NR_getsid:
10665 return get_errno(getsid(arg1));
10666 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10667 case TARGET_NR_fdatasync:
10668 return get_errno(fdatasync(arg1));
10669 #endif
10670 case TARGET_NR_sched_getaffinity:
10671 {
10672 unsigned int mask_size;
10673 unsigned long *mask;
10674
10675 /*
10676 * sched_getaffinity needs multiples of ulong, so need to take
10677 * care of mismatches between target ulong and host ulong sizes.
10678 */
10679 if (arg2 & (sizeof(abi_ulong) - 1)) {
10680 return -TARGET_EINVAL;
10681 }
10682 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10683
10684 mask = alloca(mask_size);
10685 memset(mask, 0, mask_size);
10686 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10687
10688 if (!is_error(ret)) {
10689 if (ret > arg2) {
10690 /* More data returned than the caller's buffer will fit.
10691 * This only happens if sizeof(abi_long) < sizeof(long)
10692 * and the caller passed us a buffer holding an odd number
10693 * of abi_longs. If the host kernel is actually using the
10694 * extra 4 bytes then fail EINVAL; otherwise we can just
10695 * ignore them and only copy the interesting part.
10696 */
10697 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
10698 if (numcpus > arg2 * 8) {
10699 return -TARGET_EINVAL;
10700 }
10701 ret = arg2;
10702 }
10703
10704 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
10705 return -TARGET_EFAULT;
10706 }
10707 }
10708 }
10709 return ret;
10710 case TARGET_NR_sched_setaffinity:
10711 {
10712 unsigned int mask_size;
10713 unsigned long *mask;
10714
10715 /*
10716 * sched_setaffinity needs multiples of ulong, so need to take
10717 * care of mismatches between target ulong and host ulong sizes.
10718 */
10719 if (arg2 & (sizeof(abi_ulong) - 1)) {
10720 return -TARGET_EINVAL;
10721 }
10722 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10723 mask = alloca(mask_size);
10724
10725 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
10726 if (ret) {
10727 return ret;
10728 }
10729
10730 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
10731 }
10732 case TARGET_NR_getcpu:
10733 {
10734 unsigned cpu, node;
10735 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
10736 arg2 ? &node : NULL,
10737 NULL));
10738 if (is_error(ret)) {
10739 return ret;
10740 }
10741 if (arg1 && put_user_u32(cpu, arg1)) {
10742 return -TARGET_EFAULT;
10743 }
10744 if (arg2 && put_user_u32(node, arg2)) {
10745 return -TARGET_EFAULT;
10746 }
10747 }
10748 return ret;
10749 case TARGET_NR_sched_setparam:
10750 {
10751 struct sched_param *target_schp;
10752 struct sched_param schp;
10753
10754 if (arg2 == 0) {
10755 return -TARGET_EINVAL;
10756 }
10757 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
10758 return -TARGET_EFAULT;
10759 schp.sched_priority = tswap32(target_schp->sched_priority);
10760 unlock_user_struct(target_schp, arg2, 0);
10761 return get_errno(sched_setparam(arg1, &schp));
10762 }
10763 case TARGET_NR_sched_getparam:
10764 {
10765 struct sched_param *target_schp;
10766 struct sched_param schp;
10767
10768 if (arg2 == 0) {
10769 return -TARGET_EINVAL;
10770 }
10771 ret = get_errno(sched_getparam(arg1, &schp));
10772 if (!is_error(ret)) {
10773 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
10774 return -TARGET_EFAULT;
10775 target_schp->sched_priority = tswap32(schp.sched_priority);
10776 unlock_user_struct(target_schp, arg2, 1);
10777 }
10778 }
10779 return ret;
10780 case TARGET_NR_sched_setscheduler:
10781 {
10782 struct sched_param *target_schp;
10783 struct sched_param schp;
10784 if (arg3 == 0) {
10785 return -TARGET_EINVAL;
10786 }
10787 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
10788 return -TARGET_EFAULT;
10789 schp.sched_priority = tswap32(target_schp->sched_priority);
10790 unlock_user_struct(target_schp, arg3, 0);
10791 return get_errno(sched_setscheduler(arg1, arg2, &schp));
10792 }
10793 case TARGET_NR_sched_getscheduler:
10794 return get_errno(sched_getscheduler(arg1));
10795 case TARGET_NR_sched_yield:
10796 return get_errno(sched_yield());
10797 case TARGET_NR_sched_get_priority_max:
10798 return get_errno(sched_get_priority_max(arg1));
10799 case TARGET_NR_sched_get_priority_min:
10800 return get_errno(sched_get_priority_min(arg1));
10801 #ifdef TARGET_NR_sched_rr_get_interval
10802 case TARGET_NR_sched_rr_get_interval:
10803 {
10804 struct timespec ts;
10805 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10806 if (!is_error(ret)) {
10807 ret = host_to_target_timespec(arg2, &ts);
10808 }
10809 }
10810 return ret;
10811 #endif
10812 #ifdef TARGET_NR_sched_rr_get_interval_time64
10813 case TARGET_NR_sched_rr_get_interval_time64:
10814 {
10815 struct timespec ts;
10816 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10817 if (!is_error(ret)) {
10818 ret = host_to_target_timespec64(arg2, &ts);
10819 }
10820 }
10821 return ret;
10822 #endif
10823 #if defined(TARGET_NR_nanosleep)
10824 case TARGET_NR_nanosleep:
10825 {
10826 struct timespec req, rem;
10827 target_to_host_timespec(&req, arg1);
10828 ret = get_errno(safe_nanosleep(&req, &rem));
10829 if (is_error(ret) && arg2) {
10830 host_to_target_timespec(arg2, &rem);
10831 }
10832 }
10833 return ret;
10834 #endif
10835 case TARGET_NR_prctl:
10836 return do_prctl(cpu_env, arg1, arg2, arg3, arg4, arg5);
10837 break;
10838 #ifdef TARGET_NR_arch_prctl
10839 case TARGET_NR_arch_prctl:
10840 return do_arch_prctl(cpu_env, arg1, arg2);
10841 #endif
10842 #ifdef TARGET_NR_pread64
10843 case TARGET_NR_pread64:
10844 if (regpairs_aligned(cpu_env, num)) {
10845 arg4 = arg5;
10846 arg5 = arg6;
10847 }
10848 if (arg2 == 0 && arg3 == 0) {
10849 /* Special-case NULL buffer and zero length, which should succeed */
10850 p = 0;
10851 } else {
10852 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10853 if (!p) {
10854 return -TARGET_EFAULT;
10855 }
10856 }
10857 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10858 unlock_user(p, arg2, ret);
10859 return ret;
10860 case TARGET_NR_pwrite64:
10861 if (regpairs_aligned(cpu_env, num)) {
10862 arg4 = arg5;
10863 arg5 = arg6;
10864 }
10865 if (arg2 == 0 && arg3 == 0) {
10866 /* Special-case NULL buffer and zero length, which should succeed */
10867 p = 0;
10868 } else {
10869 p = lock_user(VERIFY_READ, arg2, arg3, 1);
10870 if (!p) {
10871 return -TARGET_EFAULT;
10872 }
10873 }
10874 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10875 unlock_user(p, arg2, 0);
10876 return ret;
10877 #endif
10878 case TARGET_NR_getcwd:
10879 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10880 return -TARGET_EFAULT;
10881 ret = get_errno(sys_getcwd1(p, arg2));
10882 unlock_user(p, arg1, ret);
10883 return ret;
10884 case TARGET_NR_capget:
10885 case TARGET_NR_capset:
10886 {
10887 struct target_user_cap_header *target_header;
10888 struct target_user_cap_data *target_data = NULL;
10889 struct __user_cap_header_struct header;
10890 struct __user_cap_data_struct data[2];
10891 struct __user_cap_data_struct *dataptr = NULL;
10892 int i, target_datalen;
10893 int data_items = 1;
10894
10895 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10896 return -TARGET_EFAULT;
10897 }
10898 header.version = tswap32(target_header->version);
10899 header.pid = tswap32(target_header->pid);
10900
10901 if (header.version != _LINUX_CAPABILITY_VERSION) {
10902 /* Version 2 and up takes pointer to two user_data structs */
10903 data_items = 2;
10904 }
10905
10906 target_datalen = sizeof(*target_data) * data_items;
10907
10908 if (arg2) {
10909 if (num == TARGET_NR_capget) {
10910 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10911 } else {
10912 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10913 }
10914 if (!target_data) {
10915 unlock_user_struct(target_header, arg1, 0);
10916 return -TARGET_EFAULT;
10917 }
10918
10919 if (num == TARGET_NR_capset) {
10920 for (i = 0; i < data_items; i++) {
10921 data[i].effective = tswap32(target_data[i].effective);
10922 data[i].permitted = tswap32(target_data[i].permitted);
10923 data[i].inheritable = tswap32(target_data[i].inheritable);
10924 }
10925 }
10926
10927 dataptr = data;
10928 }
10929
10930 if (num == TARGET_NR_capget) {
10931 ret = get_errno(capget(&header, dataptr));
10932 } else {
10933 ret = get_errno(capset(&header, dataptr));
10934 }
10935
10936 /* The kernel always updates version for both capget and capset */
10937 target_header->version = tswap32(header.version);
10938 unlock_user_struct(target_header, arg1, 1);
10939
10940 if (arg2) {
10941 if (num == TARGET_NR_capget) {
10942 for (i = 0; i < data_items; i++) {
10943 target_data[i].effective = tswap32(data[i].effective);
10944 target_data[i].permitted = tswap32(data[i].permitted);
10945 target_data[i].inheritable = tswap32(data[i].inheritable);
10946 }
10947 unlock_user(target_data, arg2, target_datalen);
10948 } else {
10949 unlock_user(target_data, arg2, 0);
10950 }
10951 }
10952 return ret;
10953 }
10954 case TARGET_NR_sigaltstack:
10955 return do_sigaltstack(arg1, arg2, cpu_env);
10956
10957 #ifdef CONFIG_SENDFILE
10958 #ifdef TARGET_NR_sendfile
10959 case TARGET_NR_sendfile:
10960 {
10961 off_t *offp = NULL;
10962 off_t off;
10963 if (arg3) {
10964 ret = get_user_sal(off, arg3);
10965 if (is_error(ret)) {
10966 return ret;
10967 }
10968 offp = &off;
10969 }
10970 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10971 if (!is_error(ret) && arg3) {
10972 abi_long ret2 = put_user_sal(off, arg3);
10973 if (is_error(ret2)) {
10974 ret = ret2;
10975 }
10976 }
10977 return ret;
10978 }
10979 #endif
10980 #ifdef TARGET_NR_sendfile64
10981 case TARGET_NR_sendfile64:
10982 {
10983 off_t *offp = NULL;
10984 off_t off;
10985 if (arg3) {
10986 ret = get_user_s64(off, arg3);
10987 if (is_error(ret)) {
10988 return ret;
10989 }
10990 offp = &off;
10991 }
10992 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10993 if (!is_error(ret) && arg3) {
10994 abi_long ret2 = put_user_s64(off, arg3);
10995 if (is_error(ret2)) {
10996 ret = ret2;
10997 }
10998 }
10999 return ret;
11000 }
11001 #endif
11002 #endif
11003 #ifdef TARGET_NR_vfork
11004 case TARGET_NR_vfork:
11005 return get_errno(do_fork(cpu_env,
11006 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
11007 0, 0, 0, 0));
11008 #endif
11009 #ifdef TARGET_NR_ugetrlimit
11010 case TARGET_NR_ugetrlimit:
11011 {
11012 struct rlimit rlim;
11013 int resource = target_to_host_resource(arg1);
11014 ret = get_errno(getrlimit(resource, &rlim));
11015 if (!is_error(ret)) {
11016 struct target_rlimit *target_rlim;
11017 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
11018 return -TARGET_EFAULT;
11019 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
11020 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
11021 unlock_user_struct(target_rlim, arg2, 1);
11022 }
11023 return ret;
11024 }
11025 #endif
11026 #ifdef TARGET_NR_truncate64
11027 case TARGET_NR_truncate64:
11028 if (!(p = lock_user_string(arg1)))
11029 return -TARGET_EFAULT;
11030 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
11031 unlock_user(p, arg1, 0);
11032 return ret;
11033 #endif
11034 #ifdef TARGET_NR_ftruncate64
11035 case TARGET_NR_ftruncate64:
11036 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
11037 #endif
11038 #ifdef TARGET_NR_stat64
11039 case TARGET_NR_stat64:
11040 if (!(p = lock_user_string(arg1))) {
11041 return -TARGET_EFAULT;
11042 }
11043 ret = get_errno(stat(path(p), &st));
11044 unlock_user(p, arg1, 0);
11045 if (!is_error(ret))
11046 ret = host_to_target_stat64(cpu_env, arg2, &st);
11047 return ret;
11048 #endif
11049 #ifdef TARGET_NR_lstat64
11050 case TARGET_NR_lstat64:
11051 if (!(p = lock_user_string(arg1))) {
11052 return -TARGET_EFAULT;
11053 }
11054 ret = get_errno(lstat(path(p), &st));
11055 unlock_user(p, arg1, 0);
11056 if (!is_error(ret))
11057 ret = host_to_target_stat64(cpu_env, arg2, &st);
11058 return ret;
11059 #endif
11060 #ifdef TARGET_NR_fstat64
11061 case TARGET_NR_fstat64:
11062 ret = get_errno(fstat(arg1, &st));
11063 if (!is_error(ret))
11064 ret = host_to_target_stat64(cpu_env, arg2, &st);
11065 return ret;
11066 #endif
11067 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
11068 #ifdef TARGET_NR_fstatat64
11069 case TARGET_NR_fstatat64:
11070 #endif
11071 #ifdef TARGET_NR_newfstatat
11072 case TARGET_NR_newfstatat:
11073 #endif
11074 if (!(p = lock_user_string(arg2))) {
11075 return -TARGET_EFAULT;
11076 }
11077 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
11078 unlock_user(p, arg2, 0);
11079 if (!is_error(ret))
11080 ret = host_to_target_stat64(cpu_env, arg3, &st);
11081 return ret;
11082 #endif
11083 #if defined(TARGET_NR_statx)
11084 case TARGET_NR_statx:
11085 {
11086 struct target_statx *target_stx;
11087 int dirfd = arg1;
11088 int flags = arg3;
11089
11090 p = lock_user_string(arg2);
11091 if (p == NULL) {
11092 return -TARGET_EFAULT;
11093 }
11094 #if defined(__NR_statx)
11095 {
11096 /*
11097 * It is assumed that struct statx is architecture independent.
11098 */
11099 struct target_statx host_stx;
11100 int mask = arg4;
11101
11102 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
11103 if (!is_error(ret)) {
11104 if (host_to_target_statx(&host_stx, arg5) != 0) {
11105 unlock_user(p, arg2, 0);
11106 return -TARGET_EFAULT;
11107 }
11108 }
11109
11110 if (ret != -TARGET_ENOSYS) {
11111 unlock_user(p, arg2, 0);
11112 return ret;
11113 }
11114 }
11115 #endif
11116 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
11117 unlock_user(p, arg2, 0);
11118
11119 if (!is_error(ret)) {
11120 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
11121 return -TARGET_EFAULT;
11122 }
11123 memset(target_stx, 0, sizeof(*target_stx));
11124 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
11125 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
11126 __put_user(st.st_ino, &target_stx->stx_ino);
11127 __put_user(st.st_mode, &target_stx->stx_mode);
11128 __put_user(st.st_uid, &target_stx->stx_uid);
11129 __put_user(st.st_gid, &target_stx->stx_gid);
11130 __put_user(st.st_nlink, &target_stx->stx_nlink);
11131 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
11132 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
11133 __put_user(st.st_size, &target_stx->stx_size);
11134 __put_user(st.st_blksize, &target_stx->stx_blksize);
11135 __put_user(st.st_blocks, &target_stx->stx_blocks);
11136 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
11137 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
11138 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
11139 unlock_user_struct(target_stx, arg5, 1);
11140 }
11141 }
11142 return ret;
11143 #endif
11144 #ifdef TARGET_NR_lchown
11145 case TARGET_NR_lchown:
11146 if (!(p = lock_user_string(arg1)))
11147 return -TARGET_EFAULT;
11148 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
11149 unlock_user(p, arg1, 0);
11150 return ret;
11151 #endif
11152 #ifdef TARGET_NR_getuid
11153 case TARGET_NR_getuid:
11154 return get_errno(high2lowuid(getuid()));
11155 #endif
11156 #ifdef TARGET_NR_getgid
11157 case TARGET_NR_getgid:
11158 return get_errno(high2lowgid(getgid()));
11159 #endif
11160 #ifdef TARGET_NR_geteuid
11161 case TARGET_NR_geteuid:
11162 return get_errno(high2lowuid(geteuid()));
11163 #endif
11164 #ifdef TARGET_NR_getegid
11165 case TARGET_NR_getegid:
11166 return get_errno(high2lowgid(getegid()));
11167 #endif
11168 case TARGET_NR_setreuid:
11169 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
11170 case TARGET_NR_setregid:
11171 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
11172 case TARGET_NR_getgroups:
11173 {
11174 int gidsetsize = arg1;
11175 target_id *target_grouplist;
11176 gid_t *grouplist;
11177 int i;
11178
11179 grouplist = alloca(gidsetsize * sizeof(gid_t));
11180 ret = get_errno(getgroups(gidsetsize, grouplist));
11181 if (gidsetsize == 0)
11182 return ret;
11183 if (!is_error(ret)) {
11184 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
11185 if (!target_grouplist)
11186 return -TARGET_EFAULT;
11187 for(i = 0;i < ret; i++)
11188 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
11189 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
11190 }
11191 }
11192 return ret;
11193 case TARGET_NR_setgroups:
11194 {
11195 int gidsetsize = arg1;
11196 target_id *target_grouplist;
11197 gid_t *grouplist = NULL;
11198 int i;
11199 if (gidsetsize) {
11200 grouplist = alloca(gidsetsize * sizeof(gid_t));
11201 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
11202 if (!target_grouplist) {
11203 return -TARGET_EFAULT;
11204 }
11205 for (i = 0; i < gidsetsize; i++) {
11206 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
11207 }
11208 unlock_user(target_grouplist, arg2, 0);
11209 }
11210 return get_errno(setgroups(gidsetsize, grouplist));
11211 }
11212 case TARGET_NR_fchown:
11213 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
11214 #if defined(TARGET_NR_fchownat)
11215 case TARGET_NR_fchownat:
11216 if (!(p = lock_user_string(arg2)))
11217 return -TARGET_EFAULT;
11218 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
11219 low2highgid(arg4), arg5));
11220 unlock_user(p, arg2, 0);
11221 return ret;
11222 #endif
11223 #ifdef TARGET_NR_setresuid
11224 case TARGET_NR_setresuid:
11225 return get_errno(sys_setresuid(low2highuid(arg1),
11226 low2highuid(arg2),
11227 low2highuid(arg3)));
11228 #endif
11229 #ifdef TARGET_NR_getresuid
11230 case TARGET_NR_getresuid:
11231 {
11232 uid_t ruid, euid, suid;
11233 ret = get_errno(getresuid(&ruid, &euid, &suid));
11234 if (!is_error(ret)) {
11235 if (put_user_id(high2lowuid(ruid), arg1)
11236 || put_user_id(high2lowuid(euid), arg2)
11237 || put_user_id(high2lowuid(suid), arg3))
11238 return -TARGET_EFAULT;
11239 }
11240 }
11241 return ret;
11242 #endif
11243 #ifdef TARGET_NR_getresgid
11244 case TARGET_NR_setresgid:
11245 return get_errno(sys_setresgid(low2highgid(arg1),
11246 low2highgid(arg2),
11247 low2highgid(arg3)));
11248 #endif
11249 #ifdef TARGET_NR_getresgid
11250 case TARGET_NR_getresgid:
11251 {
11252 gid_t rgid, egid, sgid;
11253 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11254 if (!is_error(ret)) {
11255 if (put_user_id(high2lowgid(rgid), arg1)
11256 || put_user_id(high2lowgid(egid), arg2)
11257 || put_user_id(high2lowgid(sgid), arg3))
11258 return -TARGET_EFAULT;
11259 }
11260 }
11261 return ret;
11262 #endif
11263 #ifdef TARGET_NR_chown
11264 case TARGET_NR_chown:
11265 if (!(p = lock_user_string(arg1)))
11266 return -TARGET_EFAULT;
11267 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
11268 unlock_user(p, arg1, 0);
11269 return ret;
11270 #endif
11271 case TARGET_NR_setuid:
11272 return get_errno(sys_setuid(low2highuid(arg1)));
11273 case TARGET_NR_setgid:
11274 return get_errno(sys_setgid(low2highgid(arg1)));
11275 case TARGET_NR_setfsuid:
11276 return get_errno(setfsuid(arg1));
11277 case TARGET_NR_setfsgid:
11278 return get_errno(setfsgid(arg1));
11279
11280 #ifdef TARGET_NR_lchown32
11281 case TARGET_NR_lchown32:
11282 if (!(p = lock_user_string(arg1)))
11283 return -TARGET_EFAULT;
11284 ret = get_errno(lchown(p, arg2, arg3));
11285 unlock_user(p, arg1, 0);
11286 return ret;
11287 #endif
11288 #ifdef TARGET_NR_getuid32
11289 case TARGET_NR_getuid32:
11290 return get_errno(getuid());
11291 #endif
11292
11293 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
11294 /* Alpha specific */
11295 case TARGET_NR_getxuid:
11296 {
11297 uid_t euid;
11298 euid=geteuid();
11299 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
11300 }
11301 return get_errno(getuid());
11302 #endif
11303 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
11304 /* Alpha specific */
11305 case TARGET_NR_getxgid:
11306 {
11307 uid_t egid;
11308 egid=getegid();
11309 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
11310 }
11311 return get_errno(getgid());
11312 #endif
11313 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
11314 /* Alpha specific */
11315 case TARGET_NR_osf_getsysinfo:
11316 ret = -TARGET_EOPNOTSUPP;
11317 switch (arg1) {
11318 case TARGET_GSI_IEEE_FP_CONTROL:
11319 {
11320 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
11321 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr;
11322
11323 swcr &= ~SWCR_STATUS_MASK;
11324 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
11325
11326 if (put_user_u64 (swcr, arg2))
11327 return -TARGET_EFAULT;
11328 ret = 0;
11329 }
11330 break;
11331
11332 /* case GSI_IEEE_STATE_AT_SIGNAL:
11333 -- Not implemented in linux kernel.
11334 case GSI_UACPROC:
11335 -- Retrieves current unaligned access state; not much used.
11336 case GSI_PROC_TYPE:
11337 -- Retrieves implver information; surely not used.
11338 case GSI_GET_HWRPB:
11339 -- Grabs a copy of the HWRPB; surely not used.
11340 */
11341 }
11342 return ret;
11343 #endif
11344 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
11345 /* Alpha specific */
11346 case TARGET_NR_osf_setsysinfo:
11347 ret = -TARGET_EOPNOTSUPP;
11348 switch (arg1) {
11349 case TARGET_SSI_IEEE_FP_CONTROL:
11350 {
11351 uint64_t swcr, fpcr;
11352
11353 if (get_user_u64 (swcr, arg2)) {
11354 return -TARGET_EFAULT;
11355 }
11356
11357 /*
11358 * The kernel calls swcr_update_status to update the
11359 * status bits from the fpcr at every point that it
11360 * could be queried. Therefore, we store the status
11361 * bits only in FPCR.
11362 */
11363 ((CPUAlphaState *)cpu_env)->swcr
11364 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
11365
11366 fpcr = cpu_alpha_load_fpcr(cpu_env);
11367 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
11368 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
11369 cpu_alpha_store_fpcr(cpu_env, fpcr);
11370 ret = 0;
11371 }
11372 break;
11373
11374 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
11375 {
11376 uint64_t exc, fpcr, fex;
11377
11378 if (get_user_u64(exc, arg2)) {
11379 return -TARGET_EFAULT;
11380 }
11381 exc &= SWCR_STATUS_MASK;
11382 fpcr = cpu_alpha_load_fpcr(cpu_env);
11383
11384 /* Old exceptions are not signaled. */
11385 fex = alpha_ieee_fpcr_to_swcr(fpcr);
11386 fex = exc & ~fex;
11387 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
11388 fex &= ((CPUArchState *)cpu_env)->swcr;
11389
11390 /* Update the hardware fpcr. */
11391 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
11392 cpu_alpha_store_fpcr(cpu_env, fpcr);
11393
11394 if (fex) {
11395 int si_code = TARGET_FPE_FLTUNK;
11396 target_siginfo_t info;
11397
11398 if (fex & SWCR_TRAP_ENABLE_DNO) {
11399 si_code = TARGET_FPE_FLTUND;
11400 }
11401 if (fex & SWCR_TRAP_ENABLE_INE) {
11402 si_code = TARGET_FPE_FLTRES;
11403 }
11404 if (fex & SWCR_TRAP_ENABLE_UNF) {
11405 si_code = TARGET_FPE_FLTUND;
11406 }
11407 if (fex & SWCR_TRAP_ENABLE_OVF) {
11408 si_code = TARGET_FPE_FLTOVF;
11409 }
11410 if (fex & SWCR_TRAP_ENABLE_DZE) {
11411 si_code = TARGET_FPE_FLTDIV;
11412 }
11413 if (fex & SWCR_TRAP_ENABLE_INV) {
11414 si_code = TARGET_FPE_FLTINV;
11415 }
11416
11417 info.si_signo = SIGFPE;
11418 info.si_errno = 0;
11419 info.si_code = si_code;
11420 info._sifields._sigfault._addr
11421 = ((CPUArchState *)cpu_env)->pc;
11422 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11423 QEMU_SI_FAULT, &info);
11424 }
11425 ret = 0;
11426 }
11427 break;
11428
11429 /* case SSI_NVPAIRS:
11430 -- Used with SSIN_UACPROC to enable unaligned accesses.
11431 case SSI_IEEE_STATE_AT_SIGNAL:
11432 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
11433 -- Not implemented in linux kernel
11434 */
11435 }
11436 return ret;
11437 #endif
11438 #ifdef TARGET_NR_osf_sigprocmask
11439 /* Alpha specific. */
11440 case TARGET_NR_osf_sigprocmask:
11441 {
11442 abi_ulong mask;
11443 int how;
11444 sigset_t set, oldset;
11445
11446 switch(arg1) {
11447 case TARGET_SIG_BLOCK:
11448 how = SIG_BLOCK;
11449 break;
11450 case TARGET_SIG_UNBLOCK:
11451 how = SIG_UNBLOCK;
11452 break;
11453 case TARGET_SIG_SETMASK:
11454 how = SIG_SETMASK;
11455 break;
11456 default:
11457 return -TARGET_EINVAL;
11458 }
11459 mask = arg2;
11460 target_to_host_old_sigset(&set, &mask);
11461 ret = do_sigprocmask(how, &set, &oldset);
11462 if (!ret) {
11463 host_to_target_old_sigset(&mask, &oldset);
11464 ret = mask;
11465 }
11466 }
11467 return ret;
11468 #endif
11469
11470 #ifdef TARGET_NR_getgid32
11471 case TARGET_NR_getgid32:
11472 return get_errno(getgid());
11473 #endif
11474 #ifdef TARGET_NR_geteuid32
11475 case TARGET_NR_geteuid32:
11476 return get_errno(geteuid());
11477 #endif
11478 #ifdef TARGET_NR_getegid32
11479 case TARGET_NR_getegid32:
11480 return get_errno(getegid());
11481 #endif
11482 #ifdef TARGET_NR_setreuid32
11483 case TARGET_NR_setreuid32:
11484 return get_errno(setreuid(arg1, arg2));
11485 #endif
11486 #ifdef TARGET_NR_setregid32
11487 case TARGET_NR_setregid32:
11488 return get_errno(setregid(arg1, arg2));
11489 #endif
11490 #ifdef TARGET_NR_getgroups32
11491 case TARGET_NR_getgroups32:
11492 {
11493 int gidsetsize = arg1;
11494 uint32_t *target_grouplist;
11495 gid_t *grouplist;
11496 int i;
11497
11498 grouplist = alloca(gidsetsize * sizeof(gid_t));
11499 ret = get_errno(getgroups(gidsetsize, grouplist));
11500 if (gidsetsize == 0)
11501 return ret;
11502 if (!is_error(ret)) {
11503 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
11504 if (!target_grouplist) {
11505 return -TARGET_EFAULT;
11506 }
11507 for(i = 0;i < ret; i++)
11508 target_grouplist[i] = tswap32(grouplist[i]);
11509 unlock_user(target_grouplist, arg2, gidsetsize * 4);
11510 }
11511 }
11512 return ret;
11513 #endif
11514 #ifdef TARGET_NR_setgroups32
11515 case TARGET_NR_setgroups32:
11516 {
11517 int gidsetsize = arg1;
11518 uint32_t *target_grouplist;
11519 gid_t *grouplist;
11520 int i;
11521
11522 grouplist = alloca(gidsetsize * sizeof(gid_t));
11523 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
11524 if (!target_grouplist) {
11525 return -TARGET_EFAULT;
11526 }
11527 for(i = 0;i < gidsetsize; i++)
11528 grouplist[i] = tswap32(target_grouplist[i]);
11529 unlock_user(target_grouplist, arg2, 0);
11530 return get_errno(setgroups(gidsetsize, grouplist));
11531 }
11532 #endif
11533 #ifdef TARGET_NR_fchown32
11534 case TARGET_NR_fchown32:
11535 return get_errno(fchown(arg1, arg2, arg3));
11536 #endif
11537 #ifdef TARGET_NR_setresuid32
11538 case TARGET_NR_setresuid32:
11539 return get_errno(sys_setresuid(arg1, arg2, arg3));
11540 #endif
11541 #ifdef TARGET_NR_getresuid32
11542 case TARGET_NR_getresuid32:
11543 {
11544 uid_t ruid, euid, suid;
11545 ret = get_errno(getresuid(&ruid, &euid, &suid));
11546 if (!is_error(ret)) {
11547 if (put_user_u32(ruid, arg1)
11548 || put_user_u32(euid, arg2)
11549 || put_user_u32(suid, arg3))
11550 return -TARGET_EFAULT;
11551 }
11552 }
11553 return ret;
11554 #endif
11555 #ifdef TARGET_NR_setresgid32
11556 case TARGET_NR_setresgid32:
11557 return get_errno(sys_setresgid(arg1, arg2, arg3));
11558 #endif
11559 #ifdef TARGET_NR_getresgid32
11560 case TARGET_NR_getresgid32:
11561 {
11562 gid_t rgid, egid, sgid;
11563 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11564 if (!is_error(ret)) {
11565 if (put_user_u32(rgid, arg1)
11566 || put_user_u32(egid, arg2)
11567 || put_user_u32(sgid, arg3))
11568 return -TARGET_EFAULT;
11569 }
11570 }
11571 return ret;
11572 #endif
11573 #ifdef TARGET_NR_chown32
11574 case TARGET_NR_chown32:
11575 if (!(p = lock_user_string(arg1)))
11576 return -TARGET_EFAULT;
11577 ret = get_errno(chown(p, arg2, arg3));
11578 unlock_user(p, arg1, 0);
11579 return ret;
11580 #endif
11581 #ifdef TARGET_NR_setuid32
11582 case TARGET_NR_setuid32:
11583 return get_errno(sys_setuid(arg1));
11584 #endif
11585 #ifdef TARGET_NR_setgid32
11586 case TARGET_NR_setgid32:
11587 return get_errno(sys_setgid(arg1));
11588 #endif
11589 #ifdef TARGET_NR_setfsuid32
11590 case TARGET_NR_setfsuid32:
11591 return get_errno(setfsuid(arg1));
11592 #endif
11593 #ifdef TARGET_NR_setfsgid32
11594 case TARGET_NR_setfsgid32:
11595 return get_errno(setfsgid(arg1));
11596 #endif
11597 #ifdef TARGET_NR_mincore
11598 case TARGET_NR_mincore:
11599 {
11600 void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
11601 if (!a) {
11602 return -TARGET_ENOMEM;
11603 }
11604 p = lock_user_string(arg3);
11605 if (!p) {
11606 ret = -TARGET_EFAULT;
11607 } else {
11608 ret = get_errno(mincore(a, arg2, p));
11609 unlock_user(p, arg3, ret);
11610 }
11611 unlock_user(a, arg1, 0);
11612 }
11613 return ret;
11614 #endif
11615 #ifdef TARGET_NR_arm_fadvise64_64
11616 case TARGET_NR_arm_fadvise64_64:
11617 /* arm_fadvise64_64 looks like fadvise64_64 but
11618 * with different argument order: fd, advice, offset, len
11619 * rather than the usual fd, offset, len, advice.
11620 * Note that offset and len are both 64-bit so appear as
11621 * pairs of 32-bit registers.
11622 */
11623 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
11624 target_offset64(arg5, arg6), arg2);
11625 return -host_to_target_errno(ret);
11626 #endif
11627
11628 #if TARGET_ABI_BITS == 32
11629
11630 #ifdef TARGET_NR_fadvise64_64
11631 case TARGET_NR_fadvise64_64:
11632 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
11633 /* 6 args: fd, advice, offset (high, low), len (high, low) */
11634 ret = arg2;
11635 arg2 = arg3;
11636 arg3 = arg4;
11637 arg4 = arg5;
11638 arg5 = arg6;
11639 arg6 = ret;
11640 #else
11641 /* 6 args: fd, offset (high, low), len (high, low), advice */
11642 if (regpairs_aligned(cpu_env, num)) {
11643 /* offset is in (3,4), len in (5,6) and advice in 7 */
11644 arg2 = arg3;
11645 arg3 = arg4;
11646 arg4 = arg5;
11647 arg5 = arg6;
11648 arg6 = arg7;
11649 }
11650 #endif
11651 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
11652 target_offset64(arg4, arg5), arg6);
11653 return -host_to_target_errno(ret);
11654 #endif
11655
11656 #ifdef TARGET_NR_fadvise64
11657 case TARGET_NR_fadvise64:
11658 /* 5 args: fd, offset (high, low), len, advice */
11659 if (regpairs_aligned(cpu_env, num)) {
11660 /* offset is in (3,4), len in 5 and advice in 6 */
11661 arg2 = arg3;
11662 arg3 = arg4;
11663 arg4 = arg5;
11664 arg5 = arg6;
11665 }
11666 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
11667 return -host_to_target_errno(ret);
11668 #endif
11669
11670 #else /* not a 32-bit ABI */
11671 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
11672 #ifdef TARGET_NR_fadvise64_64
11673 case TARGET_NR_fadvise64_64:
11674 #endif
11675 #ifdef TARGET_NR_fadvise64
11676 case TARGET_NR_fadvise64:
11677 #endif
11678 #ifdef TARGET_S390X
11679 switch (arg4) {
11680 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
11681 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
11682 case 6: arg4 = POSIX_FADV_DONTNEED; break;
11683 case 7: arg4 = POSIX_FADV_NOREUSE; break;
11684 default: break;
11685 }
11686 #endif
11687 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
11688 #endif
11689 #endif /* end of 64-bit ABI fadvise handling */
11690
11691 #ifdef TARGET_NR_madvise
11692 case TARGET_NR_madvise:
11693 /* A straight passthrough may not be safe because qemu sometimes
11694 turns private file-backed mappings into anonymous mappings.
11695 This will break MADV_DONTNEED.
11696 This is a hint, so ignoring and returning success is ok. */
11697 return 0;
11698 #endif
11699 #ifdef TARGET_NR_fcntl64
11700 case TARGET_NR_fcntl64:
11701 {
11702 int cmd;
11703 struct flock64 fl;
11704 from_flock64_fn *copyfrom = copy_from_user_flock64;
11705 to_flock64_fn *copyto = copy_to_user_flock64;
11706
11707 #ifdef TARGET_ARM
11708 if (!((CPUARMState *)cpu_env)->eabi) {
11709 copyfrom = copy_from_user_oabi_flock64;
11710 copyto = copy_to_user_oabi_flock64;
11711 }
11712 #endif
11713
11714 cmd = target_to_host_fcntl_cmd(arg2);
11715 if (cmd == -TARGET_EINVAL) {
11716 return cmd;
11717 }
11718
11719 switch(arg2) {
11720 case TARGET_F_GETLK64:
11721 ret = copyfrom(&fl, arg3);
11722 if (ret) {
11723 break;
11724 }
11725 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11726 if (ret == 0) {
11727 ret = copyto(arg3, &fl);
11728 }
11729 break;
11730
11731 case TARGET_F_SETLK64:
11732 case TARGET_F_SETLKW64:
11733 ret = copyfrom(&fl, arg3);
11734 if (ret) {
11735 break;
11736 }
11737 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11738 break;
11739 default:
11740 ret = do_fcntl(arg1, arg2, arg3);
11741 break;
11742 }
11743 return ret;
11744 }
11745 #endif
11746 #ifdef TARGET_NR_cacheflush
11747 case TARGET_NR_cacheflush:
11748 /* self-modifying code is handled automatically, so nothing needed */
11749 return 0;
11750 #endif
11751 #ifdef TARGET_NR_getpagesize
11752 case TARGET_NR_getpagesize:
11753 return TARGET_PAGE_SIZE;
11754 #endif
11755 case TARGET_NR_gettid:
11756 return get_errno(sys_gettid());
11757 #ifdef TARGET_NR_readahead
11758 case TARGET_NR_readahead:
11759 #if TARGET_ABI_BITS == 32
11760 if (regpairs_aligned(cpu_env, num)) {
11761 arg2 = arg3;
11762 arg3 = arg4;
11763 arg4 = arg5;
11764 }
11765 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
11766 #else
11767 ret = get_errno(readahead(arg1, arg2, arg3));
11768 #endif
11769 return ret;
11770 #endif
11771 #ifdef CONFIG_ATTR
11772 #ifdef TARGET_NR_setxattr
11773 case TARGET_NR_listxattr:
11774 case TARGET_NR_llistxattr:
11775 {
11776 void *p, *b = 0;
11777 if (arg2) {
11778 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11779 if (!b) {
11780 return -TARGET_EFAULT;
11781 }
11782 }
11783 p = lock_user_string(arg1);
11784 if (p) {
11785 if (num == TARGET_NR_listxattr) {
11786 ret = get_errno(listxattr(p, b, arg3));
11787 } else {
11788 ret = get_errno(llistxattr(p, b, arg3));
11789 }
11790 } else {
11791 ret = -TARGET_EFAULT;
11792 }
11793 unlock_user(p, arg1, 0);
11794 unlock_user(b, arg2, arg3);
11795 return ret;
11796 }
11797 case TARGET_NR_flistxattr:
11798 {
11799 void *b = 0;
11800 if (arg2) {
11801 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11802 if (!b) {
11803 return -TARGET_EFAULT;
11804 }
11805 }
11806 ret = get_errno(flistxattr(arg1, b, arg3));
11807 unlock_user(b, arg2, arg3);
11808 return ret;
11809 }
11810 case TARGET_NR_setxattr:
11811 case TARGET_NR_lsetxattr:
11812 {
11813 void *p, *n, *v = 0;
11814 if (arg3) {
11815 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11816 if (!v) {
11817 return -TARGET_EFAULT;
11818 }
11819 }
11820 p = lock_user_string(arg1);
11821 n = lock_user_string(arg2);
11822 if (p && n) {
11823 if (num == TARGET_NR_setxattr) {
11824 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11825 } else {
11826 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11827 }
11828 } else {
11829 ret = -TARGET_EFAULT;
11830 }
11831 unlock_user(p, arg1, 0);
11832 unlock_user(n, arg2, 0);
11833 unlock_user(v, arg3, 0);
11834 }
11835 return ret;
11836 case TARGET_NR_fsetxattr:
11837 {
11838 void *n, *v = 0;
11839 if (arg3) {
11840 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11841 if (!v) {
11842 return -TARGET_EFAULT;
11843 }
11844 }
11845 n = lock_user_string(arg2);
11846 if (n) {
11847 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11848 } else {
11849 ret = -TARGET_EFAULT;
11850 }
11851 unlock_user(n, arg2, 0);
11852 unlock_user(v, arg3, 0);
11853 }
11854 return ret;
11855 case TARGET_NR_getxattr:
11856 case TARGET_NR_lgetxattr:
11857 {
11858 void *p, *n, *v = 0;
11859 if (arg3) {
11860 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11861 if (!v) {
11862 return -TARGET_EFAULT;
11863 }
11864 }
11865 p = lock_user_string(arg1);
11866 n = lock_user_string(arg2);
11867 if (p && n) {
11868 if (num == TARGET_NR_getxattr) {
11869 ret = get_errno(getxattr(p, n, v, arg4));
11870 } else {
11871 ret = get_errno(lgetxattr(p, n, v, arg4));
11872 }
11873 } else {
11874 ret = -TARGET_EFAULT;
11875 }
11876 unlock_user(p, arg1, 0);
11877 unlock_user(n, arg2, 0);
11878 unlock_user(v, arg3, arg4);
11879 }
11880 return ret;
11881 case TARGET_NR_fgetxattr:
11882 {
11883 void *n, *v = 0;
11884 if (arg3) {
11885 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11886 if (!v) {
11887 return -TARGET_EFAULT;
11888 }
11889 }
11890 n = lock_user_string(arg2);
11891 if (n) {
11892 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11893 } else {
11894 ret = -TARGET_EFAULT;
11895 }
11896 unlock_user(n, arg2, 0);
11897 unlock_user(v, arg3, arg4);
11898 }
11899 return ret;
11900 case TARGET_NR_removexattr:
11901 case TARGET_NR_lremovexattr:
11902 {
11903 void *p, *n;
11904 p = lock_user_string(arg1);
11905 n = lock_user_string(arg2);
11906 if (p && n) {
11907 if (num == TARGET_NR_removexattr) {
11908 ret = get_errno(removexattr(p, n));
11909 } else {
11910 ret = get_errno(lremovexattr(p, n));
11911 }
11912 } else {
11913 ret = -TARGET_EFAULT;
11914 }
11915 unlock_user(p, arg1, 0);
11916 unlock_user(n, arg2, 0);
11917 }
11918 return ret;
11919 case TARGET_NR_fremovexattr:
11920 {
11921 void *n;
11922 n = lock_user_string(arg2);
11923 if (n) {
11924 ret = get_errno(fremovexattr(arg1, n));
11925 } else {
11926 ret = -TARGET_EFAULT;
11927 }
11928 unlock_user(n, arg2, 0);
11929 }
11930 return ret;
11931 #endif
11932 #endif /* CONFIG_ATTR */
11933 #ifdef TARGET_NR_set_thread_area
11934 case TARGET_NR_set_thread_area:
11935 #if defined(TARGET_MIPS)
11936 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
11937 return 0;
11938 #elif defined(TARGET_CRIS)
11939 if (arg1 & 0xff)
11940 ret = -TARGET_EINVAL;
11941 else {
11942 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
11943 ret = 0;
11944 }
11945 return ret;
11946 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
11947 return do_set_thread_area(cpu_env, arg1);
11948 #elif defined(TARGET_M68K)
11949 {
11950 TaskState *ts = cpu->opaque;
11951 ts->tp_value = arg1;
11952 return 0;
11953 }
11954 #else
11955 return -TARGET_ENOSYS;
11956 #endif
11957 #endif
11958 #ifdef TARGET_NR_get_thread_area
11959 case TARGET_NR_get_thread_area:
11960 #if defined(TARGET_I386) && defined(TARGET_ABI32)
11961 return do_get_thread_area(cpu_env, arg1);
11962 #elif defined(TARGET_M68K)
11963 {
11964 TaskState *ts = cpu->opaque;
11965 return ts->tp_value;
11966 }
11967 #else
11968 return -TARGET_ENOSYS;
11969 #endif
11970 #endif
11971 #ifdef TARGET_NR_getdomainname
11972 case TARGET_NR_getdomainname:
11973 return -TARGET_ENOSYS;
11974 #endif
11975
11976 #ifdef TARGET_NR_clock_settime
11977 case TARGET_NR_clock_settime:
11978 {
11979 struct timespec ts;
11980
11981 ret = target_to_host_timespec(&ts, arg2);
11982 if (!is_error(ret)) {
11983 ret = get_errno(clock_settime(arg1, &ts));
11984 }
11985 return ret;
11986 }
11987 #endif
11988 #ifdef TARGET_NR_clock_settime64
11989 case TARGET_NR_clock_settime64:
11990 {
11991 struct timespec ts;
11992
11993 ret = target_to_host_timespec64(&ts, arg2);
11994 if (!is_error(ret)) {
11995 ret = get_errno(clock_settime(arg1, &ts));
11996 }
11997 return ret;
11998 }
11999 #endif
12000 #ifdef TARGET_NR_clock_gettime
12001 case TARGET_NR_clock_gettime:
12002 {
12003 struct timespec ts;
12004 ret = get_errno(clock_gettime(arg1, &ts));
12005 if (!is_error(ret)) {
12006 ret = host_to_target_timespec(arg2, &ts);
12007 }
12008 return ret;
12009 }
12010 #endif
12011 #ifdef TARGET_NR_clock_gettime64
12012 case TARGET_NR_clock_gettime64:
12013 {
12014 struct timespec ts;
12015 ret = get_errno(clock_gettime(arg1, &ts));
12016 if (!is_error(ret)) {
12017 ret = host_to_target_timespec64(arg2, &ts);
12018 }
12019 return ret;
12020 }
12021 #endif
12022 #ifdef TARGET_NR_clock_getres
12023 case TARGET_NR_clock_getres:
12024 {
12025 struct timespec ts;
12026 ret = get_errno(clock_getres(arg1, &ts));
12027 if (!is_error(ret)) {
12028 host_to_target_timespec(arg2, &ts);
12029 }
12030 return ret;
12031 }
12032 #endif
12033 #ifdef TARGET_NR_clock_getres_time64
12034 case TARGET_NR_clock_getres_time64:
12035 {
12036 struct timespec ts;
12037 ret = get_errno(clock_getres(arg1, &ts));
12038 if (!is_error(ret)) {
12039 host_to_target_timespec64(arg2, &ts);
12040 }
12041 return ret;
12042 }
12043 #endif
12044 #ifdef TARGET_NR_clock_nanosleep
12045 case TARGET_NR_clock_nanosleep:
12046 {
12047 struct timespec ts;
12048 if (target_to_host_timespec(&ts, arg3)) {
12049 return -TARGET_EFAULT;
12050 }
12051 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12052 &ts, arg4 ? &ts : NULL));
12053 /*
12054 * if the call is interrupted by a signal handler, it fails
12055 * with error -TARGET_EINTR and if arg4 is not NULL and arg2 is not
12056 * TIMER_ABSTIME, it returns the remaining unslept time in arg4.
12057 */
12058 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12059 host_to_target_timespec(arg4, &ts)) {
12060 return -TARGET_EFAULT;
12061 }
12062
12063 return ret;
12064 }
12065 #endif
12066 #ifdef TARGET_NR_clock_nanosleep_time64
12067 case TARGET_NR_clock_nanosleep_time64:
12068 {
12069 struct timespec ts;
12070
12071 if (target_to_host_timespec64(&ts, arg3)) {
12072 return -TARGET_EFAULT;
12073 }
12074
12075 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
12076 &ts, arg4 ? &ts : NULL));
12077
12078 if (ret == -TARGET_EINTR && arg4 && arg2 != TIMER_ABSTIME &&
12079 host_to_target_timespec64(arg4, &ts)) {
12080 return -TARGET_EFAULT;
12081 }
12082 return ret;
12083 }
12084 #endif
12085
12086 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
12087 case TARGET_NR_set_tid_address:
12088 return get_errno(set_tid_address((int *)g2h(cpu, arg1)));
12089 #endif
12090
12091 case TARGET_NR_tkill:
12092 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
12093
12094 case TARGET_NR_tgkill:
12095 return get_errno(safe_tgkill((int)arg1, (int)arg2,
12096 target_to_host_signal(arg3)));
12097
12098 #ifdef TARGET_NR_set_robust_list
12099 case TARGET_NR_set_robust_list:
12100 case TARGET_NR_get_robust_list:
12101 /* The ABI for supporting robust futexes has userspace pass
12102 * the kernel a pointer to a linked list which is updated by
12103 * userspace after the syscall; the list is walked by the kernel
12104 * when the thread exits. Since the linked list in QEMU guest
12105 * memory isn't a valid linked list for the host and we have
12106 * no way to reliably intercept the thread-death event, we can't
12107 * support these. Silently return ENOSYS so that guest userspace
12108 * falls back to a non-robust futex implementation (which should
12109 * be OK except in the corner case of the guest crashing while
12110 * holding a mutex that is shared with another process via
12111 * shared memory).
12112 */
12113 return -TARGET_ENOSYS;
12114 #endif
12115
12116 #if defined(TARGET_NR_utimensat)
12117 case TARGET_NR_utimensat:
12118 {
12119 struct timespec *tsp, ts[2];
12120 if (!arg3) {
12121 tsp = NULL;
12122 } else {
12123 if (target_to_host_timespec(ts, arg3)) {
12124 return -TARGET_EFAULT;
12125 }
12126 if (target_to_host_timespec(ts + 1, arg3 +
12127 sizeof(struct target_timespec))) {
12128 return -TARGET_EFAULT;
12129 }
12130 tsp = ts;
12131 }
12132 if (!arg2)
12133 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12134 else {
12135 if (!(p = lock_user_string(arg2))) {
12136 return -TARGET_EFAULT;
12137 }
12138 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12139 unlock_user(p, arg2, 0);
12140 }
12141 }
12142 return ret;
12143 #endif
12144 #ifdef TARGET_NR_utimensat_time64
12145 case TARGET_NR_utimensat_time64:
12146 {
12147 struct timespec *tsp, ts[2];
12148 if (!arg3) {
12149 tsp = NULL;
12150 } else {
12151 if (target_to_host_timespec64(ts, arg3)) {
12152 return -TARGET_EFAULT;
12153 }
12154 if (target_to_host_timespec64(ts + 1, arg3 +
12155 sizeof(struct target__kernel_timespec))) {
12156 return -TARGET_EFAULT;
12157 }
12158 tsp = ts;
12159 }
12160 if (!arg2)
12161 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
12162 else {
12163 p = lock_user_string(arg2);
12164 if (!p) {
12165 return -TARGET_EFAULT;
12166 }
12167 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
12168 unlock_user(p, arg2, 0);
12169 }
12170 }
12171 return ret;
12172 #endif
12173 #ifdef TARGET_NR_futex
12174 case TARGET_NR_futex:
12175 return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
12176 #endif
12177 #ifdef TARGET_NR_futex_time64
12178 case TARGET_NR_futex_time64:
12179 return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6);
12180 #endif
12181 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
12182 case TARGET_NR_inotify_init:
12183 ret = get_errno(sys_inotify_init());
12184 if (ret >= 0) {
12185 fd_trans_register(ret, &target_inotify_trans);
12186 }
12187 return ret;
12188 #endif
12189 #ifdef CONFIG_INOTIFY1
12190 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
12191 case TARGET_NR_inotify_init1:
12192 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
12193 fcntl_flags_tbl)));
12194 if (ret >= 0) {
12195 fd_trans_register(ret, &target_inotify_trans);
12196 }
12197 return ret;
12198 #endif
12199 #endif
12200 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
12201 case TARGET_NR_inotify_add_watch:
12202 p = lock_user_string(arg2);
12203 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
12204 unlock_user(p, arg2, 0);
12205 return ret;
12206 #endif
12207 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
12208 case TARGET_NR_inotify_rm_watch:
12209 return get_errno(sys_inotify_rm_watch(arg1, arg2));
12210 #endif
12211
12212 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
12213 case TARGET_NR_mq_open:
12214 {
12215 struct mq_attr posix_mq_attr;
12216 struct mq_attr *pposix_mq_attr;
12217 int host_flags;
12218
12219 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
12220 pposix_mq_attr = NULL;
12221 if (arg4) {
12222 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
12223 return -TARGET_EFAULT;
12224 }
12225 pposix_mq_attr = &posix_mq_attr;
12226 }
12227 p = lock_user_string(arg1 - 1);
12228 if (!p) {
12229 return -TARGET_EFAULT;
12230 }
12231 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
12232 unlock_user (p, arg1, 0);
12233 }
12234 return ret;
12235
12236 case TARGET_NR_mq_unlink:
12237 p = lock_user_string(arg1 - 1);
12238 if (!p) {
12239 return -TARGET_EFAULT;
12240 }
12241 ret = get_errno(mq_unlink(p));
12242 unlock_user (p, arg1, 0);
12243 return ret;
12244
12245 #ifdef TARGET_NR_mq_timedsend
12246 case TARGET_NR_mq_timedsend:
12247 {
12248 struct timespec ts;
12249
12250 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12251 if (arg5 != 0) {
12252 if (target_to_host_timespec(&ts, arg5)) {
12253 return -TARGET_EFAULT;
12254 }
12255 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12256 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12257 return -TARGET_EFAULT;
12258 }
12259 } else {
12260 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12261 }
12262 unlock_user (p, arg2, arg3);
12263 }
12264 return ret;
12265 #endif
12266 #ifdef TARGET_NR_mq_timedsend_time64
12267 case TARGET_NR_mq_timedsend_time64:
12268 {
12269 struct timespec ts;
12270
12271 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12272 if (arg5 != 0) {
12273 if (target_to_host_timespec64(&ts, arg5)) {
12274 return -TARGET_EFAULT;
12275 }
12276 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
12277 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12278 return -TARGET_EFAULT;
12279 }
12280 } else {
12281 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
12282 }
12283 unlock_user(p, arg2, arg3);
12284 }
12285 return ret;
12286 #endif
12287
12288 #ifdef TARGET_NR_mq_timedreceive
12289 case TARGET_NR_mq_timedreceive:
12290 {
12291 struct timespec ts;
12292 unsigned int prio;
12293
12294 p = lock_user (VERIFY_READ, arg2, arg3, 1);
12295 if (arg5 != 0) {
12296 if (target_to_host_timespec(&ts, arg5)) {
12297 return -TARGET_EFAULT;
12298 }
12299 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12300 &prio, &ts));
12301 if (!is_error(ret) && host_to_target_timespec(arg5, &ts)) {
12302 return -TARGET_EFAULT;
12303 }
12304 } else {
12305 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12306 &prio, NULL));
12307 }
12308 unlock_user (p, arg2, arg3);
12309 if (arg4 != 0)
12310 put_user_u32(prio, arg4);
12311 }
12312 return ret;
12313 #endif
12314 #ifdef TARGET_NR_mq_timedreceive_time64
12315 case TARGET_NR_mq_timedreceive_time64:
12316 {
12317 struct timespec ts;
12318 unsigned int prio;
12319
12320 p = lock_user(VERIFY_READ, arg2, arg3, 1);
12321 if (arg5 != 0) {
12322 if (target_to_host_timespec64(&ts, arg5)) {
12323 return -TARGET_EFAULT;
12324 }
12325 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12326 &prio, &ts));
12327 if (!is_error(ret) && host_to_target_timespec64(arg5, &ts)) {
12328 return -TARGET_EFAULT;
12329 }
12330 } else {
12331 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
12332 &prio, NULL));
12333 }
12334 unlock_user(p, arg2, arg3);
12335 if (arg4 != 0) {
12336 put_user_u32(prio, arg4);
12337 }
12338 }
12339 return ret;
12340 #endif
12341
12342 /* Not implemented for now... */
12343 /* case TARGET_NR_mq_notify: */
12344 /* break; */
12345
12346 case TARGET_NR_mq_getsetattr:
12347 {
12348 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
12349 ret = 0;
12350 if (arg2 != 0) {
12351 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
12352 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
12353 &posix_mq_attr_out));
12354 } else if (arg3 != 0) {
12355 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
12356 }
12357 if (ret == 0 && arg3 != 0) {
12358 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
12359 }
12360 }
12361 return ret;
12362 #endif
12363
12364 #ifdef CONFIG_SPLICE
12365 #ifdef TARGET_NR_tee
12366 case TARGET_NR_tee:
12367 {
12368 ret = get_errno(tee(arg1,arg2,arg3,arg4));
12369 }
12370 return ret;
12371 #endif
12372 #ifdef TARGET_NR_splice
12373 case TARGET_NR_splice:
12374 {
12375 loff_t loff_in, loff_out;
12376 loff_t *ploff_in = NULL, *ploff_out = NULL;
12377 if (arg2) {
12378 if (get_user_u64(loff_in, arg2)) {
12379 return -TARGET_EFAULT;
12380 }
12381 ploff_in = &loff_in;
12382 }
12383 if (arg4) {
12384 if (get_user_u64(loff_out, arg4)) {
12385 return -TARGET_EFAULT;
12386 }
12387 ploff_out = &loff_out;
12388 }
12389 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
12390 if (arg2) {
12391 if (put_user_u64(loff_in, arg2)) {
12392 return -TARGET_EFAULT;
12393 }
12394 }
12395 if (arg4) {
12396 if (put_user_u64(loff_out, arg4)) {
12397 return -TARGET_EFAULT;
12398 }
12399 }
12400 }
12401 return ret;
12402 #endif
12403 #ifdef TARGET_NR_vmsplice
12404 case TARGET_NR_vmsplice:
12405 {
12406 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
12407 if (vec != NULL) {
12408 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
12409 unlock_iovec(vec, arg2, arg3, 0);
12410 } else {
12411 ret = -host_to_target_errno(errno);
12412 }
12413 }
12414 return ret;
12415 #endif
12416 #endif /* CONFIG_SPLICE */
12417 #ifdef CONFIG_EVENTFD
12418 #if defined(TARGET_NR_eventfd)
12419 case TARGET_NR_eventfd:
12420 ret = get_errno(eventfd(arg1, 0));
12421 if (ret >= 0) {
12422 fd_trans_register(ret, &target_eventfd_trans);
12423 }
12424 return ret;
12425 #endif
12426 #if defined(TARGET_NR_eventfd2)
12427 case TARGET_NR_eventfd2:
12428 {
12429 int host_flags = arg2 & (~(TARGET_O_NONBLOCK_MASK | TARGET_O_CLOEXEC));
12430 if (arg2 & TARGET_O_NONBLOCK) {
12431 host_flags |= O_NONBLOCK;
12432 }
12433 if (arg2 & TARGET_O_CLOEXEC) {
12434 host_flags |= O_CLOEXEC;
12435 }
12436 ret = get_errno(eventfd(arg1, host_flags));
12437 if (ret >= 0) {
12438 fd_trans_register(ret, &target_eventfd_trans);
12439 }
12440 return ret;
12441 }
12442 #endif
12443 #endif /* CONFIG_EVENTFD */
12444 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
12445 case TARGET_NR_fallocate:
12446 #if TARGET_ABI_BITS == 32
12447 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
12448 target_offset64(arg5, arg6)));
12449 #else
12450 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
12451 #endif
12452 return ret;
12453 #endif
12454 #if defined(CONFIG_SYNC_FILE_RANGE)
12455 #if defined(TARGET_NR_sync_file_range)
12456 case TARGET_NR_sync_file_range:
12457 #if TARGET_ABI_BITS == 32
12458 #if defined(TARGET_MIPS)
12459 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12460 target_offset64(arg5, arg6), arg7));
12461 #else
12462 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
12463 target_offset64(arg4, arg5), arg6));
12464 #endif /* !TARGET_MIPS */
12465 #else
12466 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
12467 #endif
12468 return ret;
12469 #endif
12470 #if defined(TARGET_NR_sync_file_range2) || \
12471 defined(TARGET_NR_arm_sync_file_range)
12472 #if defined(TARGET_NR_sync_file_range2)
12473 case TARGET_NR_sync_file_range2:
12474 #endif
12475 #if defined(TARGET_NR_arm_sync_file_range)
12476 case TARGET_NR_arm_sync_file_range:
12477 #endif
12478 /* This is like sync_file_range but the arguments are reordered */
12479 #if TARGET_ABI_BITS == 32
12480 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
12481 target_offset64(arg5, arg6), arg2));
12482 #else
12483 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
12484 #endif
12485 return ret;
12486 #endif
12487 #endif
12488 #if defined(TARGET_NR_signalfd4)
12489 case TARGET_NR_signalfd4:
12490 return do_signalfd4(arg1, arg2, arg4);
12491 #endif
12492 #if defined(TARGET_NR_signalfd)
12493 case TARGET_NR_signalfd:
12494 return do_signalfd4(arg1, arg2, 0);
12495 #endif
12496 #if defined(CONFIG_EPOLL)
12497 #if defined(TARGET_NR_epoll_create)
12498 case TARGET_NR_epoll_create:
12499 return get_errno(epoll_create(arg1));
12500 #endif
12501 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
12502 case TARGET_NR_epoll_create1:
12503 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
12504 #endif
12505 #if defined(TARGET_NR_epoll_ctl)
12506 case TARGET_NR_epoll_ctl:
12507 {
12508 struct epoll_event ep;
12509 struct epoll_event *epp = 0;
12510 if (arg4) {
12511 if (arg2 != EPOLL_CTL_DEL) {
12512 struct target_epoll_event *target_ep;
12513 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
12514 return -TARGET_EFAULT;
12515 }
12516 ep.events = tswap32(target_ep->events);
12517 /*
12518 * The epoll_data_t union is just opaque data to the kernel,
12519 * so we transfer all 64 bits across and need not worry what
12520 * actual data type it is.
12521 */
12522 ep.data.u64 = tswap64(target_ep->data.u64);
12523 unlock_user_struct(target_ep, arg4, 0);
12524 }
12525 /*
12526 * before kernel 2.6.9, EPOLL_CTL_DEL operation required a
12527 * non-null pointer, even though this argument is ignored.
12528 *
12529 */
12530 epp = &ep;
12531 }
12532 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
12533 }
12534 #endif
12535
12536 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
12537 #if defined(TARGET_NR_epoll_wait)
12538 case TARGET_NR_epoll_wait:
12539 #endif
12540 #if defined(TARGET_NR_epoll_pwait)
12541 case TARGET_NR_epoll_pwait:
12542 #endif
12543 {
12544 struct target_epoll_event *target_ep;
12545 struct epoll_event *ep;
12546 int epfd = arg1;
12547 int maxevents = arg3;
12548 int timeout = arg4;
12549
12550 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
12551 return -TARGET_EINVAL;
12552 }
12553
12554 target_ep = lock_user(VERIFY_WRITE, arg2,
12555 maxevents * sizeof(struct target_epoll_event), 1);
12556 if (!target_ep) {
12557 return -TARGET_EFAULT;
12558 }
12559
12560 ep = g_try_new(struct epoll_event, maxevents);
12561 if (!ep) {
12562 unlock_user(target_ep, arg2, 0);
12563 return -TARGET_ENOMEM;
12564 }
12565
12566 switch (num) {
12567 #if defined(TARGET_NR_epoll_pwait)
12568 case TARGET_NR_epoll_pwait:
12569 {
12570 target_sigset_t *target_set;
12571 sigset_t _set, *set = &_set;
12572
12573 if (arg5) {
12574 if (arg6 != sizeof(target_sigset_t)) {
12575 ret = -TARGET_EINVAL;
12576 break;
12577 }
12578
12579 target_set = lock_user(VERIFY_READ, arg5,
12580 sizeof(target_sigset_t), 1);
12581 if (!target_set) {
12582 ret = -TARGET_EFAULT;
12583 break;
12584 }
12585 target_to_host_sigset(set, target_set);
12586 unlock_user(target_set, arg5, 0);
12587 } else {
12588 set = NULL;
12589 }
12590
12591 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12592 set, SIGSET_T_SIZE));
12593 break;
12594 }
12595 #endif
12596 #if defined(TARGET_NR_epoll_wait)
12597 case TARGET_NR_epoll_wait:
12598 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12599 NULL, 0));
12600 break;
12601 #endif
12602 default:
12603 ret = -TARGET_ENOSYS;
12604 }
12605 if (!is_error(ret)) {
12606 int i;
12607 for (i = 0; i < ret; i++) {
12608 target_ep[i].events = tswap32(ep[i].events);
12609 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
12610 }
12611 unlock_user(target_ep, arg2,
12612 ret * sizeof(struct target_epoll_event));
12613 } else {
12614 unlock_user(target_ep, arg2, 0);
12615 }
12616 g_free(ep);
12617 return ret;
12618 }
12619 #endif
12620 #endif
12621 #ifdef TARGET_NR_prlimit64
12622 case TARGET_NR_prlimit64:
12623 {
12624 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
12625 struct target_rlimit64 *target_rnew, *target_rold;
12626 struct host_rlimit64 rnew, rold, *rnewp = 0;
12627 int resource = target_to_host_resource(arg2);
12628
12629 if (arg3 && (resource != RLIMIT_AS &&
12630 resource != RLIMIT_DATA &&
12631 resource != RLIMIT_STACK)) {
12632 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
12633 return -TARGET_EFAULT;
12634 }
12635 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
12636 rnew.rlim_max = tswap64(target_rnew->rlim_max);
12637 unlock_user_struct(target_rnew, arg3, 0);
12638 rnewp = &rnew;
12639 }
12640
12641 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
12642 if (!is_error(ret) && arg4) {
12643 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
12644 return -TARGET_EFAULT;
12645 }
12646 target_rold->rlim_cur = tswap64(rold.rlim_cur);
12647 target_rold->rlim_max = tswap64(rold.rlim_max);
12648 unlock_user_struct(target_rold, arg4, 1);
12649 }
12650 return ret;
12651 }
12652 #endif
12653 #ifdef TARGET_NR_gethostname
12654 case TARGET_NR_gethostname:
12655 {
12656 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
12657 if (name) {
12658 ret = get_errno(gethostname(name, arg2));
12659 unlock_user(name, arg1, arg2);
12660 } else {
12661 ret = -TARGET_EFAULT;
12662 }
12663 return ret;
12664 }
12665 #endif
12666 #ifdef TARGET_NR_atomic_cmpxchg_32
12667 case TARGET_NR_atomic_cmpxchg_32:
12668 {
12669 /* should use start_exclusive from main.c */
12670 abi_ulong mem_value;
12671 if (get_user_u32(mem_value, arg6)) {
12672 target_siginfo_t info;
12673 info.si_signo = SIGSEGV;
12674 info.si_errno = 0;
12675 info.si_code = TARGET_SEGV_MAPERR;
12676 info._sifields._sigfault._addr = arg6;
12677 queue_signal((CPUArchState *)cpu_env, info.si_signo,
12678 QEMU_SI_FAULT, &info);
12679 ret = 0xdeadbeef;
12680
12681 }
12682 if (mem_value == arg2)
12683 put_user_u32(arg1, arg6);
12684 return mem_value;
12685 }
12686 #endif
12687 #ifdef TARGET_NR_atomic_barrier
12688 case TARGET_NR_atomic_barrier:
12689 /* Like the kernel implementation and the
12690 qemu arm barrier, no-op this? */
12691 return 0;
12692 #endif
12693
12694 #ifdef TARGET_NR_timer_create
12695 case TARGET_NR_timer_create:
12696 {
12697 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
12698
12699 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
12700
12701 int clkid = arg1;
12702 int timer_index = next_free_host_timer();
12703
12704 if (timer_index < 0) {
12705 ret = -TARGET_EAGAIN;
12706 } else {
12707 timer_t *phtimer = g_posix_timers + timer_index;
12708
12709 if (arg2) {
12710 phost_sevp = &host_sevp;
12711 ret = target_to_host_sigevent(phost_sevp, arg2);
12712 if (ret != 0) {
12713 return ret;
12714 }
12715 }
12716
12717 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
12718 if (ret) {
12719 phtimer = NULL;
12720 } else {
12721 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
12722 return -TARGET_EFAULT;
12723 }
12724 }
12725 }
12726 return ret;
12727 }
12728 #endif
12729
12730 #ifdef TARGET_NR_timer_settime
12731 case TARGET_NR_timer_settime:
12732 {
12733 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
12734 * struct itimerspec * old_value */
12735 target_timer_t timerid = get_timer_id(arg1);
12736
12737 if (timerid < 0) {
12738 ret = timerid;
12739 } else if (arg3 == 0) {
12740 ret = -TARGET_EINVAL;
12741 } else {
12742 timer_t htimer = g_posix_timers[timerid];
12743 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12744
12745 if (target_to_host_itimerspec(&hspec_new, arg3)) {
12746 return -TARGET_EFAULT;
12747 }
12748 ret = get_errno(
12749 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12750 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
12751 return -TARGET_EFAULT;
12752 }
12753 }
12754 return ret;
12755 }
12756 #endif
12757
12758 #ifdef TARGET_NR_timer_settime64
12759 case TARGET_NR_timer_settime64:
12760 {
12761 target_timer_t timerid = get_timer_id(arg1);
12762
12763 if (timerid < 0) {
12764 ret = timerid;
12765 } else if (arg3 == 0) {
12766 ret = -TARGET_EINVAL;
12767 } else {
12768 timer_t htimer = g_posix_timers[timerid];
12769 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12770
12771 if (target_to_host_itimerspec64(&hspec_new, arg3)) {
12772 return -TARGET_EFAULT;
12773 }
12774 ret = get_errno(
12775 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12776 if (arg4 && host_to_target_itimerspec64(arg4, &hspec_old)) {
12777 return -TARGET_EFAULT;
12778 }
12779 }
12780 return ret;
12781 }
12782 #endif
12783
12784 #ifdef TARGET_NR_timer_gettime
12785 case TARGET_NR_timer_gettime:
12786 {
12787 /* args: timer_t timerid, struct itimerspec *curr_value */
12788 target_timer_t timerid = get_timer_id(arg1);
12789
12790 if (timerid < 0) {
12791 ret = timerid;
12792 } else if (!arg2) {
12793 ret = -TARGET_EFAULT;
12794 } else {
12795 timer_t htimer = g_posix_timers[timerid];
12796 struct itimerspec hspec;
12797 ret = get_errno(timer_gettime(htimer, &hspec));
12798
12799 if (host_to_target_itimerspec(arg2, &hspec)) {
12800 ret = -TARGET_EFAULT;
12801 }
12802 }
12803 return ret;
12804 }
12805 #endif
12806
12807 #ifdef TARGET_NR_timer_gettime64
12808 case TARGET_NR_timer_gettime64:
12809 {
12810 /* args: timer_t timerid, struct itimerspec64 *curr_value */
12811 target_timer_t timerid = get_timer_id(arg1);
12812
12813 if (timerid < 0) {
12814 ret = timerid;
12815 } else if (!arg2) {
12816 ret = -TARGET_EFAULT;
12817 } else {
12818 timer_t htimer = g_posix_timers[timerid];
12819 struct itimerspec hspec;
12820 ret = get_errno(timer_gettime(htimer, &hspec));
12821
12822 if (host_to_target_itimerspec64(arg2, &hspec)) {
12823 ret = -TARGET_EFAULT;
12824 }
12825 }
12826 return ret;
12827 }
12828 #endif
12829
12830 #ifdef TARGET_NR_timer_getoverrun
12831 case TARGET_NR_timer_getoverrun:
12832 {
12833 /* args: timer_t timerid */
12834 target_timer_t timerid = get_timer_id(arg1);
12835
12836 if (timerid < 0) {
12837 ret = timerid;
12838 } else {
12839 timer_t htimer = g_posix_timers[timerid];
12840 ret = get_errno(timer_getoverrun(htimer));
12841 }
12842 return ret;
12843 }
12844 #endif
12845
12846 #ifdef TARGET_NR_timer_delete
12847 case TARGET_NR_timer_delete:
12848 {
12849 /* args: timer_t timerid */
12850 target_timer_t timerid = get_timer_id(arg1);
12851
12852 if (timerid < 0) {
12853 ret = timerid;
12854 } else {
12855 timer_t htimer = g_posix_timers[timerid];
12856 ret = get_errno(timer_delete(htimer));
12857 g_posix_timers[timerid] = 0;
12858 }
12859 return ret;
12860 }
12861 #endif
12862
12863 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
12864 case TARGET_NR_timerfd_create:
12865 return get_errno(timerfd_create(arg1,
12866 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
12867 #endif
12868
12869 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
12870 case TARGET_NR_timerfd_gettime:
12871 {
12872 struct itimerspec its_curr;
12873
12874 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12875
12876 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
12877 return -TARGET_EFAULT;
12878 }
12879 }
12880 return ret;
12881 #endif
12882
12883 #if defined(TARGET_NR_timerfd_gettime64) && defined(CONFIG_TIMERFD)
12884 case TARGET_NR_timerfd_gettime64:
12885 {
12886 struct itimerspec its_curr;
12887
12888 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12889
12890 if (arg2 && host_to_target_itimerspec64(arg2, &its_curr)) {
12891 return -TARGET_EFAULT;
12892 }
12893 }
12894 return ret;
12895 #endif
12896
12897 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
12898 case TARGET_NR_timerfd_settime:
12899 {
12900 struct itimerspec its_new, its_old, *p_new;
12901
12902 if (arg3) {
12903 if (target_to_host_itimerspec(&its_new, arg3)) {
12904 return -TARGET_EFAULT;
12905 }
12906 p_new = &its_new;
12907 } else {
12908 p_new = NULL;
12909 }
12910
12911 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12912
12913 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
12914 return -TARGET_EFAULT;
12915 }
12916 }
12917 return ret;
12918 #endif
12919
12920 #if defined(TARGET_NR_timerfd_settime64) && defined(CONFIG_TIMERFD)
12921 case TARGET_NR_timerfd_settime64:
12922 {
12923 struct itimerspec its_new, its_old, *p_new;
12924
12925 if (arg3) {
12926 if (target_to_host_itimerspec64(&its_new, arg3)) {
12927 return -TARGET_EFAULT;
12928 }
12929 p_new = &its_new;
12930 } else {
12931 p_new = NULL;
12932 }
12933
12934 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12935
12936 if (arg4 && host_to_target_itimerspec64(arg4, &its_old)) {
12937 return -TARGET_EFAULT;
12938 }
12939 }
12940 return ret;
12941 #endif
12942
12943 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
12944 case TARGET_NR_ioprio_get:
12945 return get_errno(ioprio_get(arg1, arg2));
12946 #endif
12947
12948 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
12949 case TARGET_NR_ioprio_set:
12950 return get_errno(ioprio_set(arg1, arg2, arg3));
12951 #endif
12952
12953 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
12954 case TARGET_NR_setns:
12955 return get_errno(setns(arg1, arg2));
12956 #endif
12957 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
12958 case TARGET_NR_unshare:
12959 return get_errno(unshare(arg1));
12960 #endif
12961 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
12962 case TARGET_NR_kcmp:
12963 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
12964 #endif
12965 #ifdef TARGET_NR_swapcontext
12966 case TARGET_NR_swapcontext:
12967 /* PowerPC specific. */
12968 return do_swapcontext(cpu_env, arg1, arg2, arg3);
12969 #endif
12970 #ifdef TARGET_NR_memfd_create
12971 case TARGET_NR_memfd_create:
12972 p = lock_user_string(arg1);
12973 if (!p) {
12974 return -TARGET_EFAULT;
12975 }
12976 ret = get_errno(memfd_create(p, arg2));
12977 fd_trans_unregister(ret);
12978 unlock_user(p, arg1, 0);
12979 return ret;
12980 #endif
12981 #if defined TARGET_NR_membarrier && defined __NR_membarrier
12982 case TARGET_NR_membarrier:
12983 return get_errno(membarrier(arg1, arg2));
12984 #endif
12985
12986 #if defined(TARGET_NR_copy_file_range) && defined(__NR_copy_file_range)
12987 case TARGET_NR_copy_file_range:
12988 {
12989 loff_t inoff, outoff;
12990 loff_t *pinoff = NULL, *poutoff = NULL;
12991
12992 if (arg2) {
12993 if (get_user_u64(inoff, arg2)) {
12994 return -TARGET_EFAULT;
12995 }
12996 pinoff = &inoff;
12997 }
12998 if (arg4) {
12999 if (get_user_u64(outoff, arg4)) {
13000 return -TARGET_EFAULT;
13001 }
13002 poutoff = &outoff;
13003 }
13004 /* Do not sign-extend the count parameter. */
13005 ret = get_errno(safe_copy_file_range(arg1, pinoff, arg3, poutoff,
13006 (abi_ulong)arg5, arg6));
13007 if (!is_error(ret) && ret > 0) {
13008 if (arg2) {
13009 if (put_user_u64(inoff, arg2)) {
13010 return -TARGET_EFAULT;
13011 }
13012 }
13013 if (arg4) {
13014 if (put_user_u64(outoff, arg4)) {
13015 return -TARGET_EFAULT;
13016 }
13017 }
13018 }
13019 }
13020 return ret;
13021 #endif
13022
13023 #if defined(TARGET_NR_pivot_root)
13024 case TARGET_NR_pivot_root:
13025 {
13026 void *p2;
13027 p = lock_user_string(arg1); /* new_root */
13028 p2 = lock_user_string(arg2); /* put_old */
13029 if (!p || !p2) {
13030 ret = -TARGET_EFAULT;
13031 } else {
13032 ret = get_errno(pivot_root(p, p2));
13033 }
13034 unlock_user(p2, arg2, 0);
13035 unlock_user(p, arg1, 0);
13036 }
13037 return ret;
13038 #endif
13039
13040 default:
13041 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
13042 return -TARGET_ENOSYS;
13043 }
13044 return ret;
13045 }
13046
13047 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
13048 abi_long arg2, abi_long arg3, abi_long arg4,
13049 abi_long arg5, abi_long arg6, abi_long arg7,
13050 abi_long arg8)
13051 {
13052 CPUState *cpu = env_cpu(cpu_env);
13053 abi_long ret;
13054
13055 #ifdef DEBUG_ERESTARTSYS
13056 /* Debug-only code for exercising the syscall-restart code paths
13057 * in the per-architecture cpu main loops: restart every syscall
13058 * the guest makes once before letting it through.
13059 */
13060 {
13061 static bool flag;
13062 flag = !flag;
13063 if (flag) {
13064 return -QEMU_ERESTARTSYS;
13065 }
13066 }
13067 #endif
13068
13069 record_syscall_start(cpu, num, arg1,
13070 arg2, arg3, arg4, arg5, arg6, arg7, arg8);
13071
13072 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13073 print_syscall(cpu_env, num, arg1, arg2, arg3, arg4, arg5, arg6);
13074 }
13075
13076 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
13077 arg5, arg6, arg7, arg8);
13078
13079 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
13080 print_syscall_ret(cpu_env, num, ret, arg1, arg2,
13081 arg3, arg4, arg5, arg6);
13082 }
13083
13084 record_syscall_return(cpu, num, ret);
13085 return ret;
13086 }
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