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monitor/hmp-cmds: add hmp_handle_error() for hmp_migrate_set_speed()
[qemu/ar7.git] / linux-user / syscall.c
blob05f03919ff070a06444d82e86a70962e753d1b25
1 /*
2 * Linux syscalls
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #define _ATFILE_SOURCE
20 #include "qemu/osdep.h"
21 #include "qemu/cutils.h"
22 #include "qemu/path.h"
23 #include "qemu/memfd.h"
24 #include "qemu/queue.h"
25 #include <elf.h>
26 #include <endian.h>
27 #include <grp.h>
28 #include <sys/ipc.h>
29 #include <sys/msg.h>
30 #include <sys/wait.h>
31 #include <sys/mount.h>
32 #include <sys/file.h>
33 #include <sys/fsuid.h>
34 #include <sys/personality.h>
35 #include <sys/prctl.h>
36 #include <sys/resource.h>
37 #include <sys/swap.h>
38 #include <linux/capability.h>
39 #include <sched.h>
40 #include <sys/timex.h>
41 #include <sys/socket.h>
42 #include <linux/sockios.h>
43 #include <sys/un.h>
44 #include <sys/uio.h>
45 #include <poll.h>
46 #include <sys/times.h>
47 #include <sys/shm.h>
48 #include <sys/sem.h>
49 #include <sys/statfs.h>
50 #include <utime.h>
51 #include <sys/sysinfo.h>
52 #include <sys/signalfd.h>
53 //#include <sys/user.h>
54 #include <netinet/ip.h>
55 #include <netinet/tcp.h>
56 #include <linux/wireless.h>
57 #include <linux/icmp.h>
58 #include <linux/icmpv6.h>
59 #include <linux/errqueue.h>
60 #include <linux/random.h>
61 #ifdef CONFIG_TIMERFD
62 #include <sys/timerfd.h>
63 #endif
64 #ifdef CONFIG_EVENTFD
65 #include <sys/eventfd.h>
66 #endif
67 #ifdef CONFIG_EPOLL
68 #include <sys/epoll.h>
69 #endif
70 #ifdef CONFIG_ATTR
71 #include "qemu/xattr.h"
72 #endif
73 #ifdef CONFIG_SENDFILE
74 #include <sys/sendfile.h>
75 #endif
76 #ifdef CONFIG_KCOV
77 #include <sys/kcov.h>
78 #endif
79
80 #define termios host_termios
81 #define winsize host_winsize
82 #define termio host_termio
83 #define sgttyb host_sgttyb /* same as target */
84 #define tchars host_tchars /* same as target */
85 #define ltchars host_ltchars /* same as target */
86
87 #include <linux/termios.h>
88 #include <linux/unistd.h>
89 #include <linux/cdrom.h>
90 #include <linux/hdreg.h>
91 #include <linux/soundcard.h>
92 #include <linux/kd.h>
93 #include <linux/mtio.h>
94 #include <linux/fs.h>
95 #include <linux/fd.h>
96 #if defined(CONFIG_FIEMAP)
97 #include <linux/fiemap.h>
98 #endif
99 #include <linux/fb.h>
100 #if defined(CONFIG_USBFS)
101 #include <linux/usbdevice_fs.h>
102 #include <linux/usb/ch9.h>
103 #endif
104 #include <linux/vt.h>
105 #include <linux/dm-ioctl.h>
106 #include <linux/reboot.h>
107 #include <linux/route.h>
108 #include <linux/filter.h>
109 #include <linux/blkpg.h>
110 #include <netpacket/packet.h>
111 #include <linux/netlink.h>
112 #include <linux/if_alg.h>
113 #include <linux/rtc.h>
114 #include <sound/asound.h>
115 #include "linux_loop.h"
116 #include "uname.h"
117
118 #include "qemu.h"
119 #include "qemu/guest-random.h"
120 #include "qemu/selfmap.h"
121 #include "user/syscall-trace.h"
122 #include "qapi/error.h"
123 #include "fd-trans.h"
124 #include "tcg/tcg.h"
125
126 #ifndef CLONE_IO
127 #define CLONE_IO 0x80000000 /* Clone io context */
128 #endif
129
130 /* We can't directly call the host clone syscall, because this will
131 * badly confuse libc (breaking mutexes, for example). So we must
132 * divide clone flags into:
133 * * flag combinations that look like pthread_create()
134 * * flag combinations that look like fork()
135 * * flags we can implement within QEMU itself
136 * * flags we can't support and will return an error for
137 */
138 /* For thread creation, all these flags must be present; for
139 * fork, none must be present.
140 */
141 #define CLONE_THREAD_FLAGS \
142 (CLONE_VM | CLONE_FS | CLONE_FILES | \
143 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
144
145 /* These flags are ignored:
146 * CLONE_DETACHED is now ignored by the kernel;
147 * CLONE_IO is just an optimisation hint to the I/O scheduler
148 */
149 #define CLONE_IGNORED_FLAGS \
150 (CLONE_DETACHED | CLONE_IO)
151
152 /* Flags for fork which we can implement within QEMU itself */
153 #define CLONE_OPTIONAL_FORK_FLAGS \
154 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
155 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
156
157 /* Flags for thread creation which we can implement within QEMU itself */
158 #define CLONE_OPTIONAL_THREAD_FLAGS \
159 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
160 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
161
162 #define CLONE_INVALID_FORK_FLAGS \
163 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
164
165 #define CLONE_INVALID_THREAD_FLAGS \
166 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
167 CLONE_IGNORED_FLAGS))
168
169 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
170 * have almost all been allocated. We cannot support any of
171 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
172 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
173 * The checks against the invalid thread masks above will catch these.
174 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
175 */
176
177 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
178 * once. This exercises the codepaths for restart.
179 */
180 //#define DEBUG_ERESTARTSYS
181
182 //#include <linux/msdos_fs.h>
183 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
184 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
185
186 #undef _syscall0
187 #undef _syscall1
188 #undef _syscall2
189 #undef _syscall3
190 #undef _syscall4
191 #undef _syscall5
192 #undef _syscall6
193
194 #define _syscall0(type,name) \
195 static type name (void) \
196 { \
197 return syscall(__NR_##name); \
198 }
199
200 #define _syscall1(type,name,type1,arg1) \
201 static type name (type1 arg1) \
202 { \
203 return syscall(__NR_##name, arg1); \
204 }
205
206 #define _syscall2(type,name,type1,arg1,type2,arg2) \
207 static type name (type1 arg1,type2 arg2) \
208 { \
209 return syscall(__NR_##name, arg1, arg2); \
210 }
211
212 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
213 static type name (type1 arg1,type2 arg2,type3 arg3) \
214 { \
215 return syscall(__NR_##name, arg1, arg2, arg3); \
216 }
217
218 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
219 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
220 { \
221 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
222 }
223
224 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
225 type5,arg5) \
226 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
227 { \
228 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
229 }
230
231
232 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
233 type5,arg5,type6,arg6) \
234 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
235 type6 arg6) \
236 { \
237 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
238 }
239
240
241 #define __NR_sys_uname __NR_uname
242 #define __NR_sys_getcwd1 __NR_getcwd
243 #define __NR_sys_getdents __NR_getdents
244 #define __NR_sys_getdents64 __NR_getdents64
245 #define __NR_sys_getpriority __NR_getpriority
246 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
247 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
248 #define __NR_sys_syslog __NR_syslog
249 #if defined(__NR_futex)
250 # define __NR_sys_futex __NR_futex
251 #endif
252 #if defined(__NR_futex_time64)
253 # define __NR_sys_futex_time64 __NR_futex_time64
254 #endif
255 #define __NR_sys_inotify_init __NR_inotify_init
256 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
257 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
258 #define __NR_sys_statx __NR_statx
259
260 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
261 #define __NR__llseek __NR_lseek
262 #endif
263
264 /* Newer kernel ports have llseek() instead of _llseek() */
265 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
266 #define TARGET_NR__llseek TARGET_NR_llseek
267 #endif
268
269 #define __NR_sys_gettid __NR_gettid
270 _syscall0(int, sys_gettid)
271
272 /* For the 64-bit guest on 32-bit host case we must emulate
273 * getdents using getdents64, because otherwise the host
274 * might hand us back more dirent records than we can fit
275 * into the guest buffer after structure format conversion.
276 * Otherwise we emulate getdents with getdents if the host has it.
277 */
278 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
279 #define EMULATE_GETDENTS_WITH_GETDENTS
280 #endif
281
282 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
283 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
284 #endif
285 #if (defined(TARGET_NR_getdents) && \
286 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
287 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
288 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
289 #endif
290 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
291 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
292 loff_t *, res, uint, wh);
293 #endif
294 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
295 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
296 siginfo_t *, uinfo)
297 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
298 #ifdef __NR_exit_group
299 _syscall1(int,exit_group,int,error_code)
300 #endif
301 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
302 _syscall1(int,set_tid_address,int *,tidptr)
303 #endif
304 #if defined(__NR_futex)
305 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
306 const struct timespec *,timeout,int *,uaddr2,int,val3)
307 #endif
308 #if defined(__NR_futex_time64)
309 _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val,
310 const struct timespec *,timeout,int *,uaddr2,int,val3)
311 #endif
312 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
313 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
314 unsigned long *, user_mask_ptr);
315 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
316 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
317 unsigned long *, user_mask_ptr);
318 #define __NR_sys_getcpu __NR_getcpu
319 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
320 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
321 void *, arg);
322 _syscall2(int, capget, struct __user_cap_header_struct *, header,
323 struct __user_cap_data_struct *, data);
324 _syscall2(int, capset, struct __user_cap_header_struct *, header,
325 struct __user_cap_data_struct *, data);
326 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
327 _syscall2(int, ioprio_get, int, which, int, who)
328 #endif
329 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
330 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
331 #endif
332 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
333 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
334 #endif
335
336 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
337 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
338 unsigned long, idx1, unsigned long, idx2)
339 #endif
340
341 /*
342 * It is assumed that struct statx is architecture independent.
343 */
344 #if defined(TARGET_NR_statx) && defined(__NR_statx)
345 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
346 unsigned int, mask, struct target_statx *, statxbuf)
347 #endif
348 #if defined(TARGET_NR_membarrier) && defined(__NR_membarrier)
349 _syscall2(int, membarrier, int, cmd, int, flags)
350 #endif
351
352 static bitmask_transtbl fcntl_flags_tbl[] = {
353 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
354 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
355 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
356 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
357 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
358 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
359 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
360 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
361 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
362 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
363 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
364 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
365 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
366 #if defined(O_DIRECT)
367 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
368 #endif
369 #if defined(O_NOATIME)
370 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
371 #endif
372 #if defined(O_CLOEXEC)
373 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
374 #endif
375 #if defined(O_PATH)
376 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
377 #endif
378 #if defined(O_TMPFILE)
379 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
380 #endif
381 /* Don't terminate the list prematurely on 64-bit host+guest. */
382 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
383 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
384 #endif
385 { 0, 0, 0, 0 }
386 };
387
388 static int sys_getcwd1(char *buf, size_t size)
389 {
390 if (getcwd(buf, size) == NULL) {
391 /* getcwd() sets errno */
392 return (-1);
393 }
394 return strlen(buf)+1;
395 }
396
397 #ifdef TARGET_NR_utimensat
398 #if defined(__NR_utimensat)
399 #define __NR_sys_utimensat __NR_utimensat
400 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
401 const struct timespec *,tsp,int,flags)
402 #else
403 static int sys_utimensat(int dirfd, const char *pathname,
404 const struct timespec times[2], int flags)
405 {
406 errno = ENOSYS;
407 return -1;
408 }
409 #endif
410 #endif /* TARGET_NR_utimensat */
411
412 #ifdef TARGET_NR_renameat2
413 #if defined(__NR_renameat2)
414 #define __NR_sys_renameat2 __NR_renameat2
415 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
416 const char *, new, unsigned int, flags)
417 #else
418 static int sys_renameat2(int oldfd, const char *old,
419 int newfd, const char *new, int flags)
420 {
421 if (flags == 0) {
422 return renameat(oldfd, old, newfd, new);
423 }
424 errno = ENOSYS;
425 return -1;
426 }
427 #endif
428 #endif /* TARGET_NR_renameat2 */
429
430 #ifdef CONFIG_INOTIFY
431 #include <sys/inotify.h>
432
433 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
434 static int sys_inotify_init(void)
435 {
436 return (inotify_init());
437 }
438 #endif
439 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
440 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
441 {
442 return (inotify_add_watch(fd, pathname, mask));
443 }
444 #endif
445 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
446 static int sys_inotify_rm_watch(int fd, int32_t wd)
447 {
448 return (inotify_rm_watch(fd, wd));
449 }
450 #endif
451 #ifdef CONFIG_INOTIFY1
452 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
453 static int sys_inotify_init1(int flags)
454 {
455 return (inotify_init1(flags));
456 }
457 #endif
458 #endif
459 #else
460 /* Userspace can usually survive runtime without inotify */
461 #undef TARGET_NR_inotify_init
462 #undef TARGET_NR_inotify_init1
463 #undef TARGET_NR_inotify_add_watch
464 #undef TARGET_NR_inotify_rm_watch
465 #endif /* CONFIG_INOTIFY */
466
467 #if defined(TARGET_NR_prlimit64)
468 #ifndef __NR_prlimit64
469 # define __NR_prlimit64 -1
470 #endif
471 #define __NR_sys_prlimit64 __NR_prlimit64
472 /* The glibc rlimit structure may not be that used by the underlying syscall */
473 struct host_rlimit64 {
474 uint64_t rlim_cur;
475 uint64_t rlim_max;
476 };
477 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
478 const struct host_rlimit64 *, new_limit,
479 struct host_rlimit64 *, old_limit)
480 #endif
481
482
483 #if defined(TARGET_NR_timer_create)
484 /* Maxiumum of 32 active POSIX timers allowed at any one time. */
485 static timer_t g_posix_timers[32] = { 0, } ;
486
487 static inline int next_free_host_timer(void)
488 {
489 int k ;
490 /* FIXME: Does finding the next free slot require a lock? */
491 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
492 if (g_posix_timers[k] == 0) {
493 g_posix_timers[k] = (timer_t) 1;
494 return k;
495 }
496 }
497 return -1;
498 }
499 #endif
500
501 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
502 #ifdef TARGET_ARM
503 static inline int regpairs_aligned(void *cpu_env, int num)
504 {
505 return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
506 }
507 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
508 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
509 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
510 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
511 * of registers which translates to the same as ARM/MIPS, because we start with
512 * r3 as arg1 */
513 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
514 #elif defined(TARGET_SH4)
515 /* SH4 doesn't align register pairs, except for p{read,write}64 */
516 static inline int regpairs_aligned(void *cpu_env, int num)
517 {
518 switch (num) {
519 case TARGET_NR_pread64:
520 case TARGET_NR_pwrite64:
521 return 1;
522
523 default:
524 return 0;
525 }
526 }
527 #elif defined(TARGET_XTENSA)
528 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
529 #else
530 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; }
531 #endif
532
533 #define ERRNO_TABLE_SIZE 1200
534
535 /* target_to_host_errno_table[] is initialized from
536 * host_to_target_errno_table[] in syscall_init(). */
537 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
538 };
539
540 /*
541 * This list is the union of errno values overridden in asm-<arch>/errno.h
542 * minus the errnos that are not actually generic to all archs.
543 */
544 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
545 [EAGAIN] = TARGET_EAGAIN,
546 [EIDRM] = TARGET_EIDRM,
547 [ECHRNG] = TARGET_ECHRNG,
548 [EL2NSYNC] = TARGET_EL2NSYNC,
549 [EL3HLT] = TARGET_EL3HLT,
550 [EL3RST] = TARGET_EL3RST,
551 [ELNRNG] = TARGET_ELNRNG,
552 [EUNATCH] = TARGET_EUNATCH,
553 [ENOCSI] = TARGET_ENOCSI,
554 [EL2HLT] = TARGET_EL2HLT,
555 [EDEADLK] = TARGET_EDEADLK,
556 [ENOLCK] = TARGET_ENOLCK,
557 [EBADE] = TARGET_EBADE,
558 [EBADR] = TARGET_EBADR,
559 [EXFULL] = TARGET_EXFULL,
560 [ENOANO] = TARGET_ENOANO,
561 [EBADRQC] = TARGET_EBADRQC,
562 [EBADSLT] = TARGET_EBADSLT,
563 [EBFONT] = TARGET_EBFONT,
564 [ENOSTR] = TARGET_ENOSTR,
565 [ENODATA] = TARGET_ENODATA,
566 [ETIME] = TARGET_ETIME,
567 [ENOSR] = TARGET_ENOSR,
568 [ENONET] = TARGET_ENONET,
569 [ENOPKG] = TARGET_ENOPKG,
570 [EREMOTE] = TARGET_EREMOTE,
571 [ENOLINK] = TARGET_ENOLINK,
572 [EADV] = TARGET_EADV,
573 [ESRMNT] = TARGET_ESRMNT,
574 [ECOMM] = TARGET_ECOMM,
575 [EPROTO] = TARGET_EPROTO,
576 [EDOTDOT] = TARGET_EDOTDOT,
577 [EMULTIHOP] = TARGET_EMULTIHOP,
578 [EBADMSG] = TARGET_EBADMSG,
579 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
580 [EOVERFLOW] = TARGET_EOVERFLOW,
581 [ENOTUNIQ] = TARGET_ENOTUNIQ,
582 [EBADFD] = TARGET_EBADFD,
583 [EREMCHG] = TARGET_EREMCHG,
584 [ELIBACC] = TARGET_ELIBACC,
585 [ELIBBAD] = TARGET_ELIBBAD,
586 [ELIBSCN] = TARGET_ELIBSCN,
587 [ELIBMAX] = TARGET_ELIBMAX,
588 [ELIBEXEC] = TARGET_ELIBEXEC,
589 [EILSEQ] = TARGET_EILSEQ,
590 [ENOSYS] = TARGET_ENOSYS,
591 [ELOOP] = TARGET_ELOOP,
592 [ERESTART] = TARGET_ERESTART,
593 [ESTRPIPE] = TARGET_ESTRPIPE,
594 [ENOTEMPTY] = TARGET_ENOTEMPTY,
595 [EUSERS] = TARGET_EUSERS,
596 [ENOTSOCK] = TARGET_ENOTSOCK,
597 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
598 [EMSGSIZE] = TARGET_EMSGSIZE,
599 [EPROTOTYPE] = TARGET_EPROTOTYPE,
600 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
601 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
602 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
603 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
604 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
605 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
606 [EADDRINUSE] = TARGET_EADDRINUSE,
607 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
608 [ENETDOWN] = TARGET_ENETDOWN,
609 [ENETUNREACH] = TARGET_ENETUNREACH,
610 [ENETRESET] = TARGET_ENETRESET,
611 [ECONNABORTED] = TARGET_ECONNABORTED,
612 [ECONNRESET] = TARGET_ECONNRESET,
613 [ENOBUFS] = TARGET_ENOBUFS,
614 [EISCONN] = TARGET_EISCONN,
615 [ENOTCONN] = TARGET_ENOTCONN,
616 [EUCLEAN] = TARGET_EUCLEAN,
617 [ENOTNAM] = TARGET_ENOTNAM,
618 [ENAVAIL] = TARGET_ENAVAIL,
619 [EISNAM] = TARGET_EISNAM,
620 [EREMOTEIO] = TARGET_EREMOTEIO,
621 [EDQUOT] = TARGET_EDQUOT,
622 [ESHUTDOWN] = TARGET_ESHUTDOWN,
623 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
624 [ETIMEDOUT] = TARGET_ETIMEDOUT,
625 [ECONNREFUSED] = TARGET_ECONNREFUSED,
626 [EHOSTDOWN] = TARGET_EHOSTDOWN,
627 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
628 [EALREADY] = TARGET_EALREADY,
629 [EINPROGRESS] = TARGET_EINPROGRESS,
630 [ESTALE] = TARGET_ESTALE,
631 [ECANCELED] = TARGET_ECANCELED,
632 [ENOMEDIUM] = TARGET_ENOMEDIUM,
633 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
634 #ifdef ENOKEY
635 [ENOKEY] = TARGET_ENOKEY,
636 #endif
637 #ifdef EKEYEXPIRED
638 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
639 #endif
640 #ifdef EKEYREVOKED
641 [EKEYREVOKED] = TARGET_EKEYREVOKED,
642 #endif
643 #ifdef EKEYREJECTED
644 [EKEYREJECTED] = TARGET_EKEYREJECTED,
645 #endif
646 #ifdef EOWNERDEAD
647 [EOWNERDEAD] = TARGET_EOWNERDEAD,
648 #endif
649 #ifdef ENOTRECOVERABLE
650 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
651 #endif
652 #ifdef ENOMSG
653 [ENOMSG] = TARGET_ENOMSG,
654 #endif
655 #ifdef ERKFILL
656 [ERFKILL] = TARGET_ERFKILL,
657 #endif
658 #ifdef EHWPOISON
659 [EHWPOISON] = TARGET_EHWPOISON,
660 #endif
661 };
662
663 static inline int host_to_target_errno(int err)
664 {
665 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
666 host_to_target_errno_table[err]) {
667 return host_to_target_errno_table[err];
668 }
669 return err;
670 }
671
672 static inline int target_to_host_errno(int err)
673 {
674 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
675 target_to_host_errno_table[err]) {
676 return target_to_host_errno_table[err];
677 }
678 return err;
679 }
680
681 static inline abi_long get_errno(abi_long ret)
682 {
683 if (ret == -1)
684 return -host_to_target_errno(errno);
685 else
686 return ret;
687 }
688
689 const char *target_strerror(int err)
690 {
691 if (err == TARGET_ERESTARTSYS) {
692 return "To be restarted";
693 }
694 if (err == TARGET_QEMU_ESIGRETURN) {
695 return "Successful exit from sigreturn";
696 }
697
698 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
699 return NULL;
700 }
701 return strerror(target_to_host_errno(err));
702 }
703
704 #define safe_syscall0(type, name) \
705 static type safe_##name(void) \
706 { \
707 return safe_syscall(__NR_##name); \
708 }
709
710 #define safe_syscall1(type, name, type1, arg1) \
711 static type safe_##name(type1 arg1) \
712 { \
713 return safe_syscall(__NR_##name, arg1); \
714 }
715
716 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
717 static type safe_##name(type1 arg1, type2 arg2) \
718 { \
719 return safe_syscall(__NR_##name, arg1, arg2); \
720 }
721
722 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
723 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
724 { \
725 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
726 }
727
728 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
729 type4, arg4) \
730 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
731 { \
732 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
733 }
734
735 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
736 type4, arg4, type5, arg5) \
737 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
738 type5 arg5) \
739 { \
740 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
741 }
742
743 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
744 type4, arg4, type5, arg5, type6, arg6) \
745 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
746 type5 arg5, type6 arg6) \
747 { \
748 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
749 }
750
751 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
752 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
753 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
754 int, flags, mode_t, mode)
755 #if defined(TARGET_NR_wait4) || defined(TARGET_NR_waitpid)
756 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
757 struct rusage *, rusage)
758 #endif
759 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
760 int, options, struct rusage *, rusage)
761 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
762 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
763 defined(TARGET_NR_pselect6)
764 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
765 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
766 #endif
767 #if defined(TARGET_NR_ppoll) || defined(TARGET_NR_poll)
768 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
769 struct timespec *, tsp, const sigset_t *, sigmask,
770 size_t, sigsetsize)
771 #endif
772 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
773 int, maxevents, int, timeout, const sigset_t *, sigmask,
774 size_t, sigsetsize)
775 #if defined(__NR_futex)
776 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
777 const struct timespec *,timeout,int *,uaddr2,int,val3)
778 #endif
779 #if defined(__NR_futex_time64)
780 safe_syscall6(int,futex_time64,int *,uaddr,int,op,int,val, \
781 const struct timespec *,timeout,int *,uaddr2,int,val3)
782 #endif
783 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
784 safe_syscall2(int, kill, pid_t, pid, int, sig)
785 safe_syscall2(int, tkill, int, tid, int, sig)
786 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
787 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
788 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
789 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
790 unsigned long, pos_l, unsigned long, pos_h)
791 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
792 unsigned long, pos_l, unsigned long, pos_h)
793 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
794 socklen_t, addrlen)
795 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
796 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
797 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
798 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
799 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
800 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
801 safe_syscall2(int, flock, int, fd, int, operation)
802 #ifdef TARGET_NR_rt_sigtimedwait
803 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
804 const struct timespec *, uts, size_t, sigsetsize)
805 #endif
806 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
807 int, flags)
808 #if defined(TARGET_NR_nanosleep)
809 safe_syscall2(int, nanosleep, const struct timespec *, req,
810 struct timespec *, rem)
811 #endif
812 #ifdef TARGET_NR_clock_nanosleep
813 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
814 const struct timespec *, req, struct timespec *, rem)
815 #endif
816 #ifdef __NR_ipc
817 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
818 void *, ptr, long, fifth)
819 #endif
820 #ifdef __NR_msgsnd
821 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
822 int, flags)
823 #endif
824 #ifdef __NR_msgrcv
825 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
826 long, msgtype, int, flags)
827 #endif
828 #ifdef __NR_semtimedop
829 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
830 unsigned, nsops, const struct timespec *, timeout)
831 #endif
832 #ifdef TARGET_NR_mq_timedsend
833 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
834 size_t, len, unsigned, prio, const struct timespec *, timeout)
835 #endif
836 #ifdef TARGET_NR_mq_timedreceive
837 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
838 size_t, len, unsigned *, prio, const struct timespec *, timeout)
839 #endif
840 /* We do ioctl like this rather than via safe_syscall3 to preserve the
841 * "third argument might be integer or pointer or not present" behaviour of
842 * the libc function.
843 */
844 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
845 /* Similarly for fcntl. Note that callers must always:
846 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
847 * use the flock64 struct rather than unsuffixed flock
848 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
849 */
850 #ifdef __NR_fcntl64
851 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
852 #else
853 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
854 #endif
855
856 static inline int host_to_target_sock_type(int host_type)
857 {
858 int target_type;
859
860 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
861 case SOCK_DGRAM:
862 target_type = TARGET_SOCK_DGRAM;
863 break;
864 case SOCK_STREAM:
865 target_type = TARGET_SOCK_STREAM;
866 break;
867 default:
868 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
869 break;
870 }
871
872 #if defined(SOCK_CLOEXEC)
873 if (host_type & SOCK_CLOEXEC) {
874 target_type |= TARGET_SOCK_CLOEXEC;
875 }
876 #endif
877
878 #if defined(SOCK_NONBLOCK)
879 if (host_type & SOCK_NONBLOCK) {
880 target_type |= TARGET_SOCK_NONBLOCK;
881 }
882 #endif
883
884 return target_type;
885 }
886
887 static abi_ulong target_brk;
888 static abi_ulong target_original_brk;
889 static abi_ulong brk_page;
890
891 void target_set_brk(abi_ulong new_brk)
892 {
893 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
894 brk_page = HOST_PAGE_ALIGN(target_brk);
895 }
896
897 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
898 #define DEBUGF_BRK(message, args...)
899
900 /* do_brk() must return target values and target errnos. */
901 abi_long do_brk(abi_ulong new_brk)
902 {
903 abi_long mapped_addr;
904 abi_ulong new_alloc_size;
905
906 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
907
908 if (!new_brk) {
909 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
910 return target_brk;
911 }
912 if (new_brk < target_original_brk) {
913 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
914 target_brk);
915 return target_brk;
916 }
917
918 /* If the new brk is less than the highest page reserved to the
919 * target heap allocation, set it and we're almost done... */
920 if (new_brk <= brk_page) {
921 /* Heap contents are initialized to zero, as for anonymous
922 * mapped pages. */
923 if (new_brk > target_brk) {
924 memset(g2h(target_brk), 0, new_brk - target_brk);
925 }
926 target_brk = new_brk;
927 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
928 return target_brk;
929 }
930
931 /* We need to allocate more memory after the brk... Note that
932 * we don't use MAP_FIXED because that will map over the top of
933 * any existing mapping (like the one with the host libc or qemu
934 * itself); instead we treat "mapped but at wrong address" as
935 * a failure and unmap again.
936 */
937 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
938 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
939 PROT_READ|PROT_WRITE,
940 MAP_ANON|MAP_PRIVATE, 0, 0));
941
942 if (mapped_addr == brk_page) {
943 /* Heap contents are initialized to zero, as for anonymous
944 * mapped pages. Technically the new pages are already
945 * initialized to zero since they *are* anonymous mapped
946 * pages, however we have to take care with the contents that
947 * come from the remaining part of the previous page: it may
948 * contains garbage data due to a previous heap usage (grown
949 * then shrunken). */
950 memset(g2h(target_brk), 0, brk_page - target_brk);
951
952 target_brk = new_brk;
953 brk_page = HOST_PAGE_ALIGN(target_brk);
954 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
955 target_brk);
956 return target_brk;
957 } else if (mapped_addr != -1) {
958 /* Mapped but at wrong address, meaning there wasn't actually
959 * enough space for this brk.
960 */
961 target_munmap(mapped_addr, new_alloc_size);
962 mapped_addr = -1;
963 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
964 }
965 else {
966 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
967 }
968
969 #if defined(TARGET_ALPHA)
970 /* We (partially) emulate OSF/1 on Alpha, which requires we
971 return a proper errno, not an unchanged brk value. */
972 return -TARGET_ENOMEM;
973 #endif
974 /* For everything else, return the previous break. */
975 return target_brk;
976 }
977
978 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) || \
979 defined(TARGET_NR_pselect6)
980 static inline abi_long copy_from_user_fdset(fd_set *fds,
981 abi_ulong target_fds_addr,
982 int n)
983 {
984 int i, nw, j, k;
985 abi_ulong b, *target_fds;
986
987 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
988 if (!(target_fds = lock_user(VERIFY_READ,
989 target_fds_addr,
990 sizeof(abi_ulong) * nw,
991 1)))
992 return -TARGET_EFAULT;
993
994 FD_ZERO(fds);
995 k = 0;
996 for (i = 0; i < nw; i++) {
997 /* grab the abi_ulong */
998 __get_user(b, &target_fds[i]);
999 for (j = 0; j < TARGET_ABI_BITS; j++) {
1000 /* check the bit inside the abi_ulong */
1001 if ((b >> j) & 1)
1002 FD_SET(k, fds);
1003 k++;
1004 }
1005 }
1006
1007 unlock_user(target_fds, target_fds_addr, 0);
1008
1009 return 0;
1010 }
1011
1012 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
1013 abi_ulong target_fds_addr,
1014 int n)
1015 {
1016 if (target_fds_addr) {
1017 if (copy_from_user_fdset(fds, target_fds_addr, n))
1018 return -TARGET_EFAULT;
1019 *fds_ptr = fds;
1020 } else {
1021 *fds_ptr = NULL;
1022 }
1023 return 0;
1024 }
1025
1026 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
1027 const fd_set *fds,
1028 int n)
1029 {
1030 int i, nw, j, k;
1031 abi_long v;
1032 abi_ulong *target_fds;
1033
1034 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1035 if (!(target_fds = lock_user(VERIFY_WRITE,
1036 target_fds_addr,
1037 sizeof(abi_ulong) * nw,
1038 0)))
1039 return -TARGET_EFAULT;
1040
1041 k = 0;
1042 for (i = 0; i < nw; i++) {
1043 v = 0;
1044 for (j = 0; j < TARGET_ABI_BITS; j++) {
1045 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1046 k++;
1047 }
1048 __put_user(v, &target_fds[i]);
1049 }
1050
1051 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1052
1053 return 0;
1054 }
1055 #endif
1056
1057 #if defined(__alpha__)
1058 #define HOST_HZ 1024
1059 #else
1060 #define HOST_HZ 100
1061 #endif
1062
1063 static inline abi_long host_to_target_clock_t(long ticks)
1064 {
1065 #if HOST_HZ == TARGET_HZ
1066 return ticks;
1067 #else
1068 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1069 #endif
1070 }
1071
1072 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1073 const struct rusage *rusage)
1074 {
1075 struct target_rusage *target_rusage;
1076
1077 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1078 return -TARGET_EFAULT;
1079 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1080 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1081 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1082 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1083 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1084 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1085 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1086 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1087 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1088 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1089 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1090 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1091 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1092 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1093 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1094 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1095 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1096 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1097 unlock_user_struct(target_rusage, target_addr, 1);
1098
1099 return 0;
1100 }
1101
1102 #ifdef TARGET_NR_setrlimit
1103 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1104 {
1105 abi_ulong target_rlim_swap;
1106 rlim_t result;
1107
1108 target_rlim_swap = tswapal(target_rlim);
1109 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1110 return RLIM_INFINITY;
1111
1112 result = target_rlim_swap;
1113 if (target_rlim_swap != (rlim_t)result)
1114 return RLIM_INFINITY;
1115
1116 return result;
1117 }
1118 #endif
1119
1120 #if defined(TARGET_NR_getrlimit) || defined(TARGET_NR_ugetrlimit)
1121 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1122 {
1123 abi_ulong target_rlim_swap;
1124 abi_ulong result;
1125
1126 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1127 target_rlim_swap = TARGET_RLIM_INFINITY;
1128 else
1129 target_rlim_swap = rlim;
1130 result = tswapal(target_rlim_swap);
1131
1132 return result;
1133 }
1134 #endif
1135
1136 static inline int target_to_host_resource(int code)
1137 {
1138 switch (code) {
1139 case TARGET_RLIMIT_AS:
1140 return RLIMIT_AS;
1141 case TARGET_RLIMIT_CORE:
1142 return RLIMIT_CORE;
1143 case TARGET_RLIMIT_CPU:
1144 return RLIMIT_CPU;
1145 case TARGET_RLIMIT_DATA:
1146 return RLIMIT_DATA;
1147 case TARGET_RLIMIT_FSIZE:
1148 return RLIMIT_FSIZE;
1149 case TARGET_RLIMIT_LOCKS:
1150 return RLIMIT_LOCKS;
1151 case TARGET_RLIMIT_MEMLOCK:
1152 return RLIMIT_MEMLOCK;
1153 case TARGET_RLIMIT_MSGQUEUE:
1154 return RLIMIT_MSGQUEUE;
1155 case TARGET_RLIMIT_NICE:
1156 return RLIMIT_NICE;
1157 case TARGET_RLIMIT_NOFILE:
1158 return RLIMIT_NOFILE;
1159 case TARGET_RLIMIT_NPROC:
1160 return RLIMIT_NPROC;
1161 case TARGET_RLIMIT_RSS:
1162 return RLIMIT_RSS;
1163 case TARGET_RLIMIT_RTPRIO:
1164 return RLIMIT_RTPRIO;
1165 case TARGET_RLIMIT_SIGPENDING:
1166 return RLIMIT_SIGPENDING;
1167 case TARGET_RLIMIT_STACK:
1168 return RLIMIT_STACK;
1169 default:
1170 return code;
1171 }
1172 }
1173
1174 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1175 abi_ulong target_tv_addr)
1176 {
1177 struct target_timeval *target_tv;
1178
1179 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1180 return -TARGET_EFAULT;
1181 }
1182
1183 __get_user(tv->tv_sec, &target_tv->tv_sec);
1184 __get_user(tv->tv_usec, &target_tv->tv_usec);
1185
1186 unlock_user_struct(target_tv, target_tv_addr, 0);
1187
1188 return 0;
1189 }
1190
1191 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1192 const struct timeval *tv)
1193 {
1194 struct target_timeval *target_tv;
1195
1196 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1197 return -TARGET_EFAULT;
1198 }
1199
1200 __put_user(tv->tv_sec, &target_tv->tv_sec);
1201 __put_user(tv->tv_usec, &target_tv->tv_usec);
1202
1203 unlock_user_struct(target_tv, target_tv_addr, 1);
1204
1205 return 0;
1206 }
1207
1208 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1209 const struct timeval *tv)
1210 {
1211 struct target__kernel_sock_timeval *target_tv;
1212
1213 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1214 return -TARGET_EFAULT;
1215 }
1216
1217 __put_user(tv->tv_sec, &target_tv->tv_sec);
1218 __put_user(tv->tv_usec, &target_tv->tv_usec);
1219
1220 unlock_user_struct(target_tv, target_tv_addr, 1);
1221
1222 return 0;
1223 }
1224
1225 #if defined(TARGET_NR_futex) || \
1226 defined(TARGET_NR_rt_sigtimedwait) || \
1227 defined(TARGET_NR_pselect6) || defined(TARGET_NR_pselect6) || \
1228 defined(TARGET_NR_nanosleep) || defined(TARGET_NR_clock_settime) || \
1229 defined(TARGET_NR_utimensat) || defined(TARGET_NR_mq_timedsend) || \
1230 defined(TARGET_NR_mq_timedreceive)
1231 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1232 abi_ulong target_addr)
1233 {
1234 struct target_timespec *target_ts;
1235
1236 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1237 return -TARGET_EFAULT;
1238 }
1239 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1240 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1241 unlock_user_struct(target_ts, target_addr, 0);
1242 return 0;
1243 }
1244 #endif
1245
1246 #if defined(TARGET_NR_clock_settime64) || defined(TARGET_NR_futex_time64)
1247 static inline abi_long target_to_host_timespec64(struct timespec *host_ts,
1248 abi_ulong target_addr)
1249 {
1250 struct target__kernel_timespec *target_ts;
1251
1252 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1253 return -TARGET_EFAULT;
1254 }
1255 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1256 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1257 unlock_user_struct(target_ts, target_addr, 0);
1258 return 0;
1259 }
1260 #endif
1261
1262 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1263 struct timespec *host_ts)
1264 {
1265 struct target_timespec *target_ts;
1266
1267 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1268 return -TARGET_EFAULT;
1269 }
1270 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1271 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1272 unlock_user_struct(target_ts, target_addr, 1);
1273 return 0;
1274 }
1275
1276 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1277 struct timespec *host_ts)
1278 {
1279 struct target__kernel_timespec *target_ts;
1280
1281 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1282 return -TARGET_EFAULT;
1283 }
1284 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1285 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1286 unlock_user_struct(target_ts, target_addr, 1);
1287 return 0;
1288 }
1289
1290 #if defined(TARGET_NR_gettimeofday)
1291 static inline abi_long copy_to_user_timezone(abi_ulong target_tz_addr,
1292 struct timezone *tz)
1293 {
1294 struct target_timezone *target_tz;
1295
1296 if (!lock_user_struct(VERIFY_WRITE, target_tz, target_tz_addr, 1)) {
1297 return -TARGET_EFAULT;
1298 }
1299
1300 __put_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1301 __put_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1302
1303 unlock_user_struct(target_tz, target_tz_addr, 1);
1304
1305 return 0;
1306 }
1307 #endif
1308
1309 #if defined(TARGET_NR_settimeofday)
1310 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1311 abi_ulong target_tz_addr)
1312 {
1313 struct target_timezone *target_tz;
1314
1315 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1316 return -TARGET_EFAULT;
1317 }
1318
1319 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1320 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1321
1322 unlock_user_struct(target_tz, target_tz_addr, 0);
1323
1324 return 0;
1325 }
1326 #endif
1327
1328 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1329 #include <mqueue.h>
1330
1331 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1332 abi_ulong target_mq_attr_addr)
1333 {
1334 struct target_mq_attr *target_mq_attr;
1335
1336 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1337 target_mq_attr_addr, 1))
1338 return -TARGET_EFAULT;
1339
1340 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1341 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1342 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1343 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1344
1345 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1346
1347 return 0;
1348 }
1349
1350 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1351 const struct mq_attr *attr)
1352 {
1353 struct target_mq_attr *target_mq_attr;
1354
1355 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1356 target_mq_attr_addr, 0))
1357 return -TARGET_EFAULT;
1358
1359 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1360 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1361 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1362 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1363
1364 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1365
1366 return 0;
1367 }
1368 #endif
1369
1370 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1371 /* do_select() must return target values and target errnos. */
1372 static abi_long do_select(int n,
1373 abi_ulong rfd_addr, abi_ulong wfd_addr,
1374 abi_ulong efd_addr, abi_ulong target_tv_addr)
1375 {
1376 fd_set rfds, wfds, efds;
1377 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1378 struct timeval tv;
1379 struct timespec ts, *ts_ptr;
1380 abi_long ret;
1381
1382 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1383 if (ret) {
1384 return ret;
1385 }
1386 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1387 if (ret) {
1388 return ret;
1389 }
1390 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1391 if (ret) {
1392 return ret;
1393 }
1394
1395 if (target_tv_addr) {
1396 if (copy_from_user_timeval(&tv, target_tv_addr))
1397 return -TARGET_EFAULT;
1398 ts.tv_sec = tv.tv_sec;
1399 ts.tv_nsec = tv.tv_usec * 1000;
1400 ts_ptr = &ts;
1401 } else {
1402 ts_ptr = NULL;
1403 }
1404
1405 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1406 ts_ptr, NULL));
1407
1408 if (!is_error(ret)) {
1409 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1410 return -TARGET_EFAULT;
1411 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1412 return -TARGET_EFAULT;
1413 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1414 return -TARGET_EFAULT;
1415
1416 if (target_tv_addr) {
1417 tv.tv_sec = ts.tv_sec;
1418 tv.tv_usec = ts.tv_nsec / 1000;
1419 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1420 return -TARGET_EFAULT;
1421 }
1422 }
1423 }
1424
1425 return ret;
1426 }
1427
1428 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1429 static abi_long do_old_select(abi_ulong arg1)
1430 {
1431 struct target_sel_arg_struct *sel;
1432 abi_ulong inp, outp, exp, tvp;
1433 long nsel;
1434
1435 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1436 return -TARGET_EFAULT;
1437 }
1438
1439 nsel = tswapal(sel->n);
1440 inp = tswapal(sel->inp);
1441 outp = tswapal(sel->outp);
1442 exp = tswapal(sel->exp);
1443 tvp = tswapal(sel->tvp);
1444
1445 unlock_user_struct(sel, arg1, 0);
1446
1447 return do_select(nsel, inp, outp, exp, tvp);
1448 }
1449 #endif
1450 #endif
1451
1452 static abi_long do_pipe2(int host_pipe[], int flags)
1453 {
1454 #ifdef CONFIG_PIPE2
1455 return pipe2(host_pipe, flags);
1456 #else
1457 return -ENOSYS;
1458 #endif
1459 }
1460
1461 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1462 int flags, int is_pipe2)
1463 {
1464 int host_pipe[2];
1465 abi_long ret;
1466 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1467
1468 if (is_error(ret))
1469 return get_errno(ret);
1470
1471 /* Several targets have special calling conventions for the original
1472 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1473 if (!is_pipe2) {
1474 #if defined(TARGET_ALPHA)
1475 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1476 return host_pipe[0];
1477 #elif defined(TARGET_MIPS)
1478 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1479 return host_pipe[0];
1480 #elif defined(TARGET_SH4)
1481 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1482 return host_pipe[0];
1483 #elif defined(TARGET_SPARC)
1484 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1485 return host_pipe[0];
1486 #endif
1487 }
1488
1489 if (put_user_s32(host_pipe[0], pipedes)
1490 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1491 return -TARGET_EFAULT;
1492 return get_errno(ret);
1493 }
1494
1495 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1496 abi_ulong target_addr,
1497 socklen_t len)
1498 {
1499 struct target_ip_mreqn *target_smreqn;
1500
1501 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1502 if (!target_smreqn)
1503 return -TARGET_EFAULT;
1504 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1505 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1506 if (len == sizeof(struct target_ip_mreqn))
1507 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1508 unlock_user(target_smreqn, target_addr, 0);
1509
1510 return 0;
1511 }
1512
1513 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1514 abi_ulong target_addr,
1515 socklen_t len)
1516 {
1517 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1518 sa_family_t sa_family;
1519 struct target_sockaddr *target_saddr;
1520
1521 if (fd_trans_target_to_host_addr(fd)) {
1522 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1523 }
1524
1525 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1526 if (!target_saddr)
1527 return -TARGET_EFAULT;
1528
1529 sa_family = tswap16(target_saddr->sa_family);
1530
1531 /* Oops. The caller might send a incomplete sun_path; sun_path
1532 * must be terminated by \0 (see the manual page), but
1533 * unfortunately it is quite common to specify sockaddr_un
1534 * length as "strlen(x->sun_path)" while it should be
1535 * "strlen(...) + 1". We'll fix that here if needed.
1536 * Linux kernel has a similar feature.
1537 */
1538
1539 if (sa_family == AF_UNIX) {
1540 if (len < unix_maxlen && len > 0) {
1541 char *cp = (char*)target_saddr;
1542
1543 if ( cp[len-1] && !cp[len] )
1544 len++;
1545 }
1546 if (len > unix_maxlen)
1547 len = unix_maxlen;
1548 }
1549
1550 memcpy(addr, target_saddr, len);
1551 addr->sa_family = sa_family;
1552 if (sa_family == AF_NETLINK) {
1553 struct sockaddr_nl *nladdr;
1554
1555 nladdr = (struct sockaddr_nl *)addr;
1556 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1557 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1558 } else if (sa_family == AF_PACKET) {
1559 struct target_sockaddr_ll *lladdr;
1560
1561 lladdr = (struct target_sockaddr_ll *)addr;
1562 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1563 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1564 }
1565 unlock_user(target_saddr, target_addr, 0);
1566
1567 return 0;
1568 }
1569
1570 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1571 struct sockaddr *addr,
1572 socklen_t len)
1573 {
1574 struct target_sockaddr *target_saddr;
1575
1576 if (len == 0) {
1577 return 0;
1578 }
1579 assert(addr);
1580
1581 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1582 if (!target_saddr)
1583 return -TARGET_EFAULT;
1584 memcpy(target_saddr, addr, len);
1585 if (len >= offsetof(struct target_sockaddr, sa_family) +
1586 sizeof(target_saddr->sa_family)) {
1587 target_saddr->sa_family = tswap16(addr->sa_family);
1588 }
1589 if (addr->sa_family == AF_NETLINK &&
1590 len >= sizeof(struct target_sockaddr_nl)) {
1591 struct target_sockaddr_nl *target_nl =
1592 (struct target_sockaddr_nl *)target_saddr;
1593 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1594 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1595 } else if (addr->sa_family == AF_PACKET) {
1596 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1597 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1598 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1599 } else if (addr->sa_family == AF_INET6 &&
1600 len >= sizeof(struct target_sockaddr_in6)) {
1601 struct target_sockaddr_in6 *target_in6 =
1602 (struct target_sockaddr_in6 *)target_saddr;
1603 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1604 }
1605 unlock_user(target_saddr, target_addr, len);
1606
1607 return 0;
1608 }
1609
1610 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1611 struct target_msghdr *target_msgh)
1612 {
1613 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1614 abi_long msg_controllen;
1615 abi_ulong target_cmsg_addr;
1616 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1617 socklen_t space = 0;
1618
1619 msg_controllen = tswapal(target_msgh->msg_controllen);
1620 if (msg_controllen < sizeof (struct target_cmsghdr))
1621 goto the_end;
1622 target_cmsg_addr = tswapal(target_msgh->msg_control);
1623 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1624 target_cmsg_start = target_cmsg;
1625 if (!target_cmsg)
1626 return -TARGET_EFAULT;
1627
1628 while (cmsg && target_cmsg) {
1629 void *data = CMSG_DATA(cmsg);
1630 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1631
1632 int len = tswapal(target_cmsg->cmsg_len)
1633 - sizeof(struct target_cmsghdr);
1634
1635 space += CMSG_SPACE(len);
1636 if (space > msgh->msg_controllen) {
1637 space -= CMSG_SPACE(len);
1638 /* This is a QEMU bug, since we allocated the payload
1639 * area ourselves (unlike overflow in host-to-target
1640 * conversion, which is just the guest giving us a buffer
1641 * that's too small). It can't happen for the payload types
1642 * we currently support; if it becomes an issue in future
1643 * we would need to improve our allocation strategy to
1644 * something more intelligent than "twice the size of the
1645 * target buffer we're reading from".
1646 */
1647 qemu_log_mask(LOG_UNIMP,
1648 ("Unsupported ancillary data %d/%d: "
1649 "unhandled msg size\n"),
1650 tswap32(target_cmsg->cmsg_level),
1651 tswap32(target_cmsg->cmsg_type));
1652 break;
1653 }
1654
1655 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1656 cmsg->cmsg_level = SOL_SOCKET;
1657 } else {
1658 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1659 }
1660 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1661 cmsg->cmsg_len = CMSG_LEN(len);
1662
1663 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1664 int *fd = (int *)data;
1665 int *target_fd = (int *)target_data;
1666 int i, numfds = len / sizeof(int);
1667
1668 for (i = 0; i < numfds; i++) {
1669 __get_user(fd[i], target_fd + i);
1670 }
1671 } else if (cmsg->cmsg_level == SOL_SOCKET
1672 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1673 struct ucred *cred = (struct ucred *)data;
1674 struct target_ucred *target_cred =
1675 (struct target_ucred *)target_data;
1676
1677 __get_user(cred->pid, &target_cred->pid);
1678 __get_user(cred->uid, &target_cred->uid);
1679 __get_user(cred->gid, &target_cred->gid);
1680 } else {
1681 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1682 cmsg->cmsg_level, cmsg->cmsg_type);
1683 memcpy(data, target_data, len);
1684 }
1685
1686 cmsg = CMSG_NXTHDR(msgh, cmsg);
1687 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1688 target_cmsg_start);
1689 }
1690 unlock_user(target_cmsg, target_cmsg_addr, 0);
1691 the_end:
1692 msgh->msg_controllen = space;
1693 return 0;
1694 }
1695
1696 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1697 struct msghdr *msgh)
1698 {
1699 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1700 abi_long msg_controllen;
1701 abi_ulong target_cmsg_addr;
1702 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1703 socklen_t space = 0;
1704
1705 msg_controllen = tswapal(target_msgh->msg_controllen);
1706 if (msg_controllen < sizeof (struct target_cmsghdr))
1707 goto the_end;
1708 target_cmsg_addr = tswapal(target_msgh->msg_control);
1709 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1710 target_cmsg_start = target_cmsg;
1711 if (!target_cmsg)
1712 return -TARGET_EFAULT;
1713
1714 while (cmsg && target_cmsg) {
1715 void *data = CMSG_DATA(cmsg);
1716 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1717
1718 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1719 int tgt_len, tgt_space;
1720
1721 /* We never copy a half-header but may copy half-data;
1722 * this is Linux's behaviour in put_cmsg(). Note that
1723 * truncation here is a guest problem (which we report
1724 * to the guest via the CTRUNC bit), unlike truncation
1725 * in target_to_host_cmsg, which is a QEMU bug.
1726 */
1727 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1728 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1729 break;
1730 }
1731
1732 if (cmsg->cmsg_level == SOL_SOCKET) {
1733 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1734 } else {
1735 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1736 }
1737 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1738
1739 /* Payload types which need a different size of payload on
1740 * the target must adjust tgt_len here.
1741 */
1742 tgt_len = len;
1743 switch (cmsg->cmsg_level) {
1744 case SOL_SOCKET:
1745 switch (cmsg->cmsg_type) {
1746 case SO_TIMESTAMP:
1747 tgt_len = sizeof(struct target_timeval);
1748 break;
1749 default:
1750 break;
1751 }
1752 break;
1753 default:
1754 break;
1755 }
1756
1757 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1758 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1759 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1760 }
1761
1762 /* We must now copy-and-convert len bytes of payload
1763 * into tgt_len bytes of destination space. Bear in mind
1764 * that in both source and destination we may be dealing
1765 * with a truncated value!
1766 */
1767 switch (cmsg->cmsg_level) {
1768 case SOL_SOCKET:
1769 switch (cmsg->cmsg_type) {
1770 case SCM_RIGHTS:
1771 {
1772 int *fd = (int *)data;
1773 int *target_fd = (int *)target_data;
1774 int i, numfds = tgt_len / sizeof(int);
1775
1776 for (i = 0; i < numfds; i++) {
1777 __put_user(fd[i], target_fd + i);
1778 }
1779 break;
1780 }
1781 case SO_TIMESTAMP:
1782 {
1783 struct timeval *tv = (struct timeval *)data;
1784 struct target_timeval *target_tv =
1785 (struct target_timeval *)target_data;
1786
1787 if (len != sizeof(struct timeval) ||
1788 tgt_len != sizeof(struct target_timeval)) {
1789 goto unimplemented;
1790 }
1791
1792 /* copy struct timeval to target */
1793 __put_user(tv->tv_sec, &target_tv->tv_sec);
1794 __put_user(tv->tv_usec, &target_tv->tv_usec);
1795 break;
1796 }
1797 case SCM_CREDENTIALS:
1798 {
1799 struct ucred *cred = (struct ucred *)data;
1800 struct target_ucred *target_cred =
1801 (struct target_ucred *)target_data;
1802
1803 __put_user(cred->pid, &target_cred->pid);
1804 __put_user(cred->uid, &target_cred->uid);
1805 __put_user(cred->gid, &target_cred->gid);
1806 break;
1807 }
1808 default:
1809 goto unimplemented;
1810 }
1811 break;
1812
1813 case SOL_IP:
1814 switch (cmsg->cmsg_type) {
1815 case IP_TTL:
1816 {
1817 uint32_t *v = (uint32_t *)data;
1818 uint32_t *t_int = (uint32_t *)target_data;
1819
1820 if (len != sizeof(uint32_t) ||
1821 tgt_len != sizeof(uint32_t)) {
1822 goto unimplemented;
1823 }
1824 __put_user(*v, t_int);
1825 break;
1826 }
1827 case IP_RECVERR:
1828 {
1829 struct errhdr_t {
1830 struct sock_extended_err ee;
1831 struct sockaddr_in offender;
1832 };
1833 struct errhdr_t *errh = (struct errhdr_t *)data;
1834 struct errhdr_t *target_errh =
1835 (struct errhdr_t *)target_data;
1836
1837 if (len != sizeof(struct errhdr_t) ||
1838 tgt_len != sizeof(struct errhdr_t)) {
1839 goto unimplemented;
1840 }
1841 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1842 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1843 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1844 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1845 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1846 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1847 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1848 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1849 (void *) &errh->offender, sizeof(errh->offender));
1850 break;
1851 }
1852 default:
1853 goto unimplemented;
1854 }
1855 break;
1856
1857 case SOL_IPV6:
1858 switch (cmsg->cmsg_type) {
1859 case IPV6_HOPLIMIT:
1860 {
1861 uint32_t *v = (uint32_t *)data;
1862 uint32_t *t_int = (uint32_t *)target_data;
1863
1864 if (len != sizeof(uint32_t) ||
1865 tgt_len != sizeof(uint32_t)) {
1866 goto unimplemented;
1867 }
1868 __put_user(*v, t_int);
1869 break;
1870 }
1871 case IPV6_RECVERR:
1872 {
1873 struct errhdr6_t {
1874 struct sock_extended_err ee;
1875 struct sockaddr_in6 offender;
1876 };
1877 struct errhdr6_t *errh = (struct errhdr6_t *)data;
1878 struct errhdr6_t *target_errh =
1879 (struct errhdr6_t *)target_data;
1880
1881 if (len != sizeof(struct errhdr6_t) ||
1882 tgt_len != sizeof(struct errhdr6_t)) {
1883 goto unimplemented;
1884 }
1885 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1886 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1887 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1888 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1889 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1890 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1891 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1892 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1893 (void *) &errh->offender, sizeof(errh->offender));
1894 break;
1895 }
1896 default:
1897 goto unimplemented;
1898 }
1899 break;
1900
1901 default:
1902 unimplemented:
1903 qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
1904 cmsg->cmsg_level, cmsg->cmsg_type);
1905 memcpy(target_data, data, MIN(len, tgt_len));
1906 if (tgt_len > len) {
1907 memset(target_data + len, 0, tgt_len - len);
1908 }
1909 }
1910
1911 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
1912 tgt_space = TARGET_CMSG_SPACE(tgt_len);
1913 if (msg_controllen < tgt_space) {
1914 tgt_space = msg_controllen;
1915 }
1916 msg_controllen -= tgt_space;
1917 space += tgt_space;
1918 cmsg = CMSG_NXTHDR(msgh, cmsg);
1919 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1920 target_cmsg_start);
1921 }
1922 unlock_user(target_cmsg, target_cmsg_addr, space);
1923 the_end:
1924 target_msgh->msg_controllen = tswapal(space);
1925 return 0;
1926 }
1927
1928 /* do_setsockopt() Must return target values and target errnos. */
1929 static abi_long do_setsockopt(int sockfd, int level, int optname,
1930 abi_ulong optval_addr, socklen_t optlen)
1931 {
1932 abi_long ret;
1933 int val;
1934 struct ip_mreqn *ip_mreq;
1935 struct ip_mreq_source *ip_mreq_source;
1936
1937 switch(level) {
1938 case SOL_TCP:
1939 /* TCP options all take an 'int' value. */
1940 if (optlen < sizeof(uint32_t))
1941 return -TARGET_EINVAL;
1942
1943 if (get_user_u32(val, optval_addr))
1944 return -TARGET_EFAULT;
1945 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1946 break;
1947 case SOL_IP:
1948 switch(optname) {
1949 case IP_TOS:
1950 case IP_TTL:
1951 case IP_HDRINCL:
1952 case IP_ROUTER_ALERT:
1953 case IP_RECVOPTS:
1954 case IP_RETOPTS:
1955 case IP_PKTINFO:
1956 case IP_MTU_DISCOVER:
1957 case IP_RECVERR:
1958 case IP_RECVTTL:
1959 case IP_RECVTOS:
1960 #ifdef IP_FREEBIND
1961 case IP_FREEBIND:
1962 #endif
1963 case IP_MULTICAST_TTL:
1964 case IP_MULTICAST_LOOP:
1965 val = 0;
1966 if (optlen >= sizeof(uint32_t)) {
1967 if (get_user_u32(val, optval_addr))
1968 return -TARGET_EFAULT;
1969 } else if (optlen >= 1) {
1970 if (get_user_u8(val, optval_addr))
1971 return -TARGET_EFAULT;
1972 }
1973 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1974 break;
1975 case IP_ADD_MEMBERSHIP:
1976 case IP_DROP_MEMBERSHIP:
1977 if (optlen < sizeof (struct target_ip_mreq) ||
1978 optlen > sizeof (struct target_ip_mreqn))
1979 return -TARGET_EINVAL;
1980
1981 ip_mreq = (struct ip_mreqn *) alloca(optlen);
1982 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
1983 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
1984 break;
1985
1986 case IP_BLOCK_SOURCE:
1987 case IP_UNBLOCK_SOURCE:
1988 case IP_ADD_SOURCE_MEMBERSHIP:
1989 case IP_DROP_SOURCE_MEMBERSHIP:
1990 if (optlen != sizeof (struct target_ip_mreq_source))
1991 return -TARGET_EINVAL;
1992
1993 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
1994 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
1995 unlock_user (ip_mreq_source, optval_addr, 0);
1996 break;
1997
1998 default:
1999 goto unimplemented;
2000 }
2001 break;
2002 case SOL_IPV6:
2003 switch (optname) {
2004 case IPV6_MTU_DISCOVER:
2005 case IPV6_MTU:
2006 case IPV6_V6ONLY:
2007 case IPV6_RECVPKTINFO:
2008 case IPV6_UNICAST_HOPS:
2009 case IPV6_MULTICAST_HOPS:
2010 case IPV6_MULTICAST_LOOP:
2011 case IPV6_RECVERR:
2012 case IPV6_RECVHOPLIMIT:
2013 case IPV6_2292HOPLIMIT:
2014 case IPV6_CHECKSUM:
2015 case IPV6_ADDRFORM:
2016 case IPV6_2292PKTINFO:
2017 case IPV6_RECVTCLASS:
2018 case IPV6_RECVRTHDR:
2019 case IPV6_2292RTHDR:
2020 case IPV6_RECVHOPOPTS:
2021 case IPV6_2292HOPOPTS:
2022 case IPV6_RECVDSTOPTS:
2023 case IPV6_2292DSTOPTS:
2024 case IPV6_TCLASS:
2025 #ifdef IPV6_RECVPATHMTU
2026 case IPV6_RECVPATHMTU:
2027 #endif
2028 #ifdef IPV6_TRANSPARENT
2029 case IPV6_TRANSPARENT:
2030 #endif
2031 #ifdef IPV6_FREEBIND
2032 case IPV6_FREEBIND:
2033 #endif
2034 #ifdef IPV6_RECVORIGDSTADDR
2035 case IPV6_RECVORIGDSTADDR:
2036 #endif
2037 val = 0;
2038 if (optlen < sizeof(uint32_t)) {
2039 return -TARGET_EINVAL;
2040 }
2041 if (get_user_u32(val, optval_addr)) {
2042 return -TARGET_EFAULT;
2043 }
2044 ret = get_errno(setsockopt(sockfd, level, optname,
2045 &val, sizeof(val)));
2046 break;
2047 case IPV6_PKTINFO:
2048 {
2049 struct in6_pktinfo pki;
2050
2051 if (optlen < sizeof(pki)) {
2052 return -TARGET_EINVAL;
2053 }
2054
2055 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
2056 return -TARGET_EFAULT;
2057 }
2058
2059 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
2060
2061 ret = get_errno(setsockopt(sockfd, level, optname,
2062 &pki, sizeof(pki)));
2063 break;
2064 }
2065 case IPV6_ADD_MEMBERSHIP:
2066 case IPV6_DROP_MEMBERSHIP:
2067 {
2068 struct ipv6_mreq ipv6mreq;
2069
2070 if (optlen < sizeof(ipv6mreq)) {
2071 return -TARGET_EINVAL;
2072 }
2073
2074 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
2075 return -TARGET_EFAULT;
2076 }
2077
2078 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
2079
2080 ret = get_errno(setsockopt(sockfd, level, optname,
2081 &ipv6mreq, sizeof(ipv6mreq)));
2082 break;
2083 }
2084 default:
2085 goto unimplemented;
2086 }
2087 break;
2088 case SOL_ICMPV6:
2089 switch (optname) {
2090 case ICMPV6_FILTER:
2091 {
2092 struct icmp6_filter icmp6f;
2093
2094 if (optlen > sizeof(icmp6f)) {
2095 optlen = sizeof(icmp6f);
2096 }
2097
2098 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2099 return -TARGET_EFAULT;
2100 }
2101
2102 for (val = 0; val < 8; val++) {
2103 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2104 }
2105
2106 ret = get_errno(setsockopt(sockfd, level, optname,
2107 &icmp6f, optlen));
2108 break;
2109 }
2110 default:
2111 goto unimplemented;
2112 }
2113 break;
2114 case SOL_RAW:
2115 switch (optname) {
2116 case ICMP_FILTER:
2117 case IPV6_CHECKSUM:
2118 /* those take an u32 value */
2119 if (optlen < sizeof(uint32_t)) {
2120 return -TARGET_EINVAL;
2121 }
2122
2123 if (get_user_u32(val, optval_addr)) {
2124 return -TARGET_EFAULT;
2125 }
2126 ret = get_errno(setsockopt(sockfd, level, optname,
2127 &val, sizeof(val)));
2128 break;
2129
2130 default:
2131 goto unimplemented;
2132 }
2133 break;
2134 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2135 case SOL_ALG:
2136 switch (optname) {
2137 case ALG_SET_KEY:
2138 {
2139 char *alg_key = g_malloc(optlen);
2140
2141 if (!alg_key) {
2142 return -TARGET_ENOMEM;
2143 }
2144 if (copy_from_user(alg_key, optval_addr, optlen)) {
2145 g_free(alg_key);
2146 return -TARGET_EFAULT;
2147 }
2148 ret = get_errno(setsockopt(sockfd, level, optname,
2149 alg_key, optlen));
2150 g_free(alg_key);
2151 break;
2152 }
2153 case ALG_SET_AEAD_AUTHSIZE:
2154 {
2155 ret = get_errno(setsockopt(sockfd, level, optname,
2156 NULL, optlen));
2157 break;
2158 }
2159 default:
2160 goto unimplemented;
2161 }
2162 break;
2163 #endif
2164 case TARGET_SOL_SOCKET:
2165 switch (optname) {
2166 case TARGET_SO_RCVTIMEO:
2167 {
2168 struct timeval tv;
2169
2170 optname = SO_RCVTIMEO;
2171
2172 set_timeout:
2173 if (optlen != sizeof(struct target_timeval)) {
2174 return -TARGET_EINVAL;
2175 }
2176
2177 if (copy_from_user_timeval(&tv, optval_addr)) {
2178 return -TARGET_EFAULT;
2179 }
2180
2181 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2182 &tv, sizeof(tv)));
2183 return ret;
2184 }
2185 case TARGET_SO_SNDTIMEO:
2186 optname = SO_SNDTIMEO;
2187 goto set_timeout;
2188 case TARGET_SO_ATTACH_FILTER:
2189 {
2190 struct target_sock_fprog *tfprog;
2191 struct target_sock_filter *tfilter;
2192 struct sock_fprog fprog;
2193 struct sock_filter *filter;
2194 int i;
2195
2196 if (optlen != sizeof(*tfprog)) {
2197 return -TARGET_EINVAL;
2198 }
2199 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2200 return -TARGET_EFAULT;
2201 }
2202 if (!lock_user_struct(VERIFY_READ, tfilter,
2203 tswapal(tfprog->filter), 0)) {
2204 unlock_user_struct(tfprog, optval_addr, 1);
2205 return -TARGET_EFAULT;
2206 }
2207
2208 fprog.len = tswap16(tfprog->len);
2209 filter = g_try_new(struct sock_filter, fprog.len);
2210 if (filter == NULL) {
2211 unlock_user_struct(tfilter, tfprog->filter, 1);
2212 unlock_user_struct(tfprog, optval_addr, 1);
2213 return -TARGET_ENOMEM;
2214 }
2215 for (i = 0; i < fprog.len; i++) {
2216 filter[i].code = tswap16(tfilter[i].code);
2217 filter[i].jt = tfilter[i].jt;
2218 filter[i].jf = tfilter[i].jf;
2219 filter[i].k = tswap32(tfilter[i].k);
2220 }
2221 fprog.filter = filter;
2222
2223 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2224 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2225 g_free(filter);
2226
2227 unlock_user_struct(tfilter, tfprog->filter, 1);
2228 unlock_user_struct(tfprog, optval_addr, 1);
2229 return ret;
2230 }
2231 case TARGET_SO_BINDTODEVICE:
2232 {
2233 char *dev_ifname, *addr_ifname;
2234
2235 if (optlen > IFNAMSIZ - 1) {
2236 optlen = IFNAMSIZ - 1;
2237 }
2238 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2239 if (!dev_ifname) {
2240 return -TARGET_EFAULT;
2241 }
2242 optname = SO_BINDTODEVICE;
2243 addr_ifname = alloca(IFNAMSIZ);
2244 memcpy(addr_ifname, dev_ifname, optlen);
2245 addr_ifname[optlen] = 0;
2246 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2247 addr_ifname, optlen));
2248 unlock_user (dev_ifname, optval_addr, 0);
2249 return ret;
2250 }
2251 case TARGET_SO_LINGER:
2252 {
2253 struct linger lg;
2254 struct target_linger *tlg;
2255
2256 if (optlen != sizeof(struct target_linger)) {
2257 return -TARGET_EINVAL;
2258 }
2259 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2260 return -TARGET_EFAULT;
2261 }
2262 __get_user(lg.l_onoff, &tlg->l_onoff);
2263 __get_user(lg.l_linger, &tlg->l_linger);
2264 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2265 &lg, sizeof(lg)));
2266 unlock_user_struct(tlg, optval_addr, 0);
2267 return ret;
2268 }
2269 /* Options with 'int' argument. */
2270 case TARGET_SO_DEBUG:
2271 optname = SO_DEBUG;
2272 break;
2273 case TARGET_SO_REUSEADDR:
2274 optname = SO_REUSEADDR;
2275 break;
2276 #ifdef SO_REUSEPORT
2277 case TARGET_SO_REUSEPORT:
2278 optname = SO_REUSEPORT;
2279 break;
2280 #endif
2281 case TARGET_SO_TYPE:
2282 optname = SO_TYPE;
2283 break;
2284 case TARGET_SO_ERROR:
2285 optname = SO_ERROR;
2286 break;
2287 case TARGET_SO_DONTROUTE:
2288 optname = SO_DONTROUTE;
2289 break;
2290 case TARGET_SO_BROADCAST:
2291 optname = SO_BROADCAST;
2292 break;
2293 case TARGET_SO_SNDBUF:
2294 optname = SO_SNDBUF;
2295 break;
2296 case TARGET_SO_SNDBUFFORCE:
2297 optname = SO_SNDBUFFORCE;
2298 break;
2299 case TARGET_SO_RCVBUF:
2300 optname = SO_RCVBUF;
2301 break;
2302 case TARGET_SO_RCVBUFFORCE:
2303 optname = SO_RCVBUFFORCE;
2304 break;
2305 case TARGET_SO_KEEPALIVE:
2306 optname = SO_KEEPALIVE;
2307 break;
2308 case TARGET_SO_OOBINLINE:
2309 optname = SO_OOBINLINE;
2310 break;
2311 case TARGET_SO_NO_CHECK:
2312 optname = SO_NO_CHECK;
2313 break;
2314 case TARGET_SO_PRIORITY:
2315 optname = SO_PRIORITY;
2316 break;
2317 #ifdef SO_BSDCOMPAT
2318 case TARGET_SO_BSDCOMPAT:
2319 optname = SO_BSDCOMPAT;
2320 break;
2321 #endif
2322 case TARGET_SO_PASSCRED:
2323 optname = SO_PASSCRED;
2324 break;
2325 case TARGET_SO_PASSSEC:
2326 optname = SO_PASSSEC;
2327 break;
2328 case TARGET_SO_TIMESTAMP:
2329 optname = SO_TIMESTAMP;
2330 break;
2331 case TARGET_SO_RCVLOWAT:
2332 optname = SO_RCVLOWAT;
2333 break;
2334 default:
2335 goto unimplemented;
2336 }
2337 if (optlen < sizeof(uint32_t))
2338 return -TARGET_EINVAL;
2339
2340 if (get_user_u32(val, optval_addr))
2341 return -TARGET_EFAULT;
2342 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2343 break;
2344 #ifdef SOL_NETLINK
2345 case SOL_NETLINK:
2346 switch (optname) {
2347 case NETLINK_PKTINFO:
2348 case NETLINK_ADD_MEMBERSHIP:
2349 case NETLINK_DROP_MEMBERSHIP:
2350 case NETLINK_BROADCAST_ERROR:
2351 case NETLINK_NO_ENOBUFS:
2352 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2353 case NETLINK_LISTEN_ALL_NSID:
2354 case NETLINK_CAP_ACK:
2355 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2356 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2357 case NETLINK_EXT_ACK:
2358 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2359 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2360 case NETLINK_GET_STRICT_CHK:
2361 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2362 break;
2363 default:
2364 goto unimplemented;
2365 }
2366 val = 0;
2367 if (optlen < sizeof(uint32_t)) {
2368 return -TARGET_EINVAL;
2369 }
2370 if (get_user_u32(val, optval_addr)) {
2371 return -TARGET_EFAULT;
2372 }
2373 ret = get_errno(setsockopt(sockfd, SOL_NETLINK, optname, &val,
2374 sizeof(val)));
2375 break;
2376 #endif /* SOL_NETLINK */
2377 default:
2378 unimplemented:
2379 qemu_log_mask(LOG_UNIMP, "Unsupported setsockopt level=%d optname=%d\n",
2380 level, optname);
2381 ret = -TARGET_ENOPROTOOPT;
2382 }
2383 return ret;
2384 }
2385
2386 /* do_getsockopt() Must return target values and target errnos. */
2387 static abi_long do_getsockopt(int sockfd, int level, int optname,
2388 abi_ulong optval_addr, abi_ulong optlen)
2389 {
2390 abi_long ret;
2391 int len, val;
2392 socklen_t lv;
2393
2394 switch(level) {
2395 case TARGET_SOL_SOCKET:
2396 level = SOL_SOCKET;
2397 switch (optname) {
2398 /* These don't just return a single integer */
2399 case TARGET_SO_PEERNAME:
2400 goto unimplemented;
2401 case TARGET_SO_RCVTIMEO: {
2402 struct timeval tv;
2403 socklen_t tvlen;
2404
2405 optname = SO_RCVTIMEO;
2406
2407 get_timeout:
2408 if (get_user_u32(len, optlen)) {
2409 return -TARGET_EFAULT;
2410 }
2411 if (len < 0) {
2412 return -TARGET_EINVAL;
2413 }
2414
2415 tvlen = sizeof(tv);
2416 ret = get_errno(getsockopt(sockfd, level, optname,
2417 &tv, &tvlen));
2418 if (ret < 0) {
2419 return ret;
2420 }
2421 if (len > sizeof(struct target_timeval)) {
2422 len = sizeof(struct target_timeval);
2423 }
2424 if (copy_to_user_timeval(optval_addr, &tv)) {
2425 return -TARGET_EFAULT;
2426 }
2427 if (put_user_u32(len, optlen)) {
2428 return -TARGET_EFAULT;
2429 }
2430 break;
2431 }
2432 case TARGET_SO_SNDTIMEO:
2433 optname = SO_SNDTIMEO;
2434 goto get_timeout;
2435 case TARGET_SO_PEERCRED: {
2436 struct ucred cr;
2437 socklen_t crlen;
2438 struct target_ucred *tcr;
2439
2440 if (get_user_u32(len, optlen)) {
2441 return -TARGET_EFAULT;
2442 }
2443 if (len < 0) {
2444 return -TARGET_EINVAL;
2445 }
2446
2447 crlen = sizeof(cr);
2448 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2449 &cr, &crlen));
2450 if (ret < 0) {
2451 return ret;
2452 }
2453 if (len > crlen) {
2454 len = crlen;
2455 }
2456 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2457 return -TARGET_EFAULT;
2458 }
2459 __put_user(cr.pid, &tcr->pid);
2460 __put_user(cr.uid, &tcr->uid);
2461 __put_user(cr.gid, &tcr->gid);
2462 unlock_user_struct(tcr, optval_addr, 1);
2463 if (put_user_u32(len, optlen)) {
2464 return -TARGET_EFAULT;
2465 }
2466 break;
2467 }
2468 case TARGET_SO_PEERSEC: {
2469 char *name;
2470
2471 if (get_user_u32(len, optlen)) {
2472 return -TARGET_EFAULT;
2473 }
2474 if (len < 0) {
2475 return -TARGET_EINVAL;
2476 }
2477 name = lock_user(VERIFY_WRITE, optval_addr, len, 0);
2478 if (!name) {
2479 return -TARGET_EFAULT;
2480 }
2481 lv = len;
2482 ret = get_errno(getsockopt(sockfd, level, SO_PEERSEC,
2483 name, &lv));
2484 if (put_user_u32(lv, optlen)) {
2485 ret = -TARGET_EFAULT;
2486 }
2487 unlock_user(name, optval_addr, lv);
2488 break;
2489 }
2490 case TARGET_SO_LINGER:
2491 {
2492 struct linger lg;
2493 socklen_t lglen;
2494 struct target_linger *tlg;
2495
2496 if (get_user_u32(len, optlen)) {
2497 return -TARGET_EFAULT;
2498 }
2499 if (len < 0) {
2500 return -TARGET_EINVAL;
2501 }
2502
2503 lglen = sizeof(lg);
2504 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2505 &lg, &lglen));
2506 if (ret < 0) {
2507 return ret;
2508 }
2509 if (len > lglen) {
2510 len = lglen;
2511 }
2512 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2513 return -TARGET_EFAULT;
2514 }
2515 __put_user(lg.l_onoff, &tlg->l_onoff);
2516 __put_user(lg.l_linger, &tlg->l_linger);
2517 unlock_user_struct(tlg, optval_addr, 1);
2518 if (put_user_u32(len, optlen)) {
2519 return -TARGET_EFAULT;
2520 }
2521 break;
2522 }
2523 /* Options with 'int' argument. */
2524 case TARGET_SO_DEBUG:
2525 optname = SO_DEBUG;
2526 goto int_case;
2527 case TARGET_SO_REUSEADDR:
2528 optname = SO_REUSEADDR;
2529 goto int_case;
2530 #ifdef SO_REUSEPORT
2531 case TARGET_SO_REUSEPORT:
2532 optname = SO_REUSEPORT;
2533 goto int_case;
2534 #endif
2535 case TARGET_SO_TYPE:
2536 optname = SO_TYPE;
2537 goto int_case;
2538 case TARGET_SO_ERROR:
2539 optname = SO_ERROR;
2540 goto int_case;
2541 case TARGET_SO_DONTROUTE:
2542 optname = SO_DONTROUTE;
2543 goto int_case;
2544 case TARGET_SO_BROADCAST:
2545 optname = SO_BROADCAST;
2546 goto int_case;
2547 case TARGET_SO_SNDBUF:
2548 optname = SO_SNDBUF;
2549 goto int_case;
2550 case TARGET_SO_RCVBUF:
2551 optname = SO_RCVBUF;
2552 goto int_case;
2553 case TARGET_SO_KEEPALIVE:
2554 optname = SO_KEEPALIVE;
2555 goto int_case;
2556 case TARGET_SO_OOBINLINE:
2557 optname = SO_OOBINLINE;
2558 goto int_case;
2559 case TARGET_SO_NO_CHECK:
2560 optname = SO_NO_CHECK;
2561 goto int_case;
2562 case TARGET_SO_PRIORITY:
2563 optname = SO_PRIORITY;
2564 goto int_case;
2565 #ifdef SO_BSDCOMPAT
2566 case TARGET_SO_BSDCOMPAT:
2567 optname = SO_BSDCOMPAT;
2568 goto int_case;
2569 #endif
2570 case TARGET_SO_PASSCRED:
2571 optname = SO_PASSCRED;
2572 goto int_case;
2573 case TARGET_SO_TIMESTAMP:
2574 optname = SO_TIMESTAMP;
2575 goto int_case;
2576 case TARGET_SO_RCVLOWAT:
2577 optname = SO_RCVLOWAT;
2578 goto int_case;
2579 case TARGET_SO_ACCEPTCONN:
2580 optname = SO_ACCEPTCONN;
2581 goto int_case;
2582 default:
2583 goto int_case;
2584 }
2585 break;
2586 case SOL_TCP:
2587 /* TCP options all take an 'int' value. */
2588 int_case:
2589 if (get_user_u32(len, optlen))
2590 return -TARGET_EFAULT;
2591 if (len < 0)
2592 return -TARGET_EINVAL;
2593 lv = sizeof(lv);
2594 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2595 if (ret < 0)
2596 return ret;
2597 if (optname == SO_TYPE) {
2598 val = host_to_target_sock_type(val);
2599 }
2600 if (len > lv)
2601 len = lv;
2602 if (len == 4) {
2603 if (put_user_u32(val, optval_addr))
2604 return -TARGET_EFAULT;
2605 } else {
2606 if (put_user_u8(val, optval_addr))
2607 return -TARGET_EFAULT;
2608 }
2609 if (put_user_u32(len, optlen))
2610 return -TARGET_EFAULT;
2611 break;
2612 case SOL_IP:
2613 switch(optname) {
2614 case IP_TOS:
2615 case IP_TTL:
2616 case IP_HDRINCL:
2617 case IP_ROUTER_ALERT:
2618 case IP_RECVOPTS:
2619 case IP_RETOPTS:
2620 case IP_PKTINFO:
2621 case IP_MTU_DISCOVER:
2622 case IP_RECVERR:
2623 case IP_RECVTOS:
2624 #ifdef IP_FREEBIND
2625 case IP_FREEBIND:
2626 #endif
2627 case IP_MULTICAST_TTL:
2628 case IP_MULTICAST_LOOP:
2629 if (get_user_u32(len, optlen))
2630 return -TARGET_EFAULT;
2631 if (len < 0)
2632 return -TARGET_EINVAL;
2633 lv = sizeof(lv);
2634 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2635 if (ret < 0)
2636 return ret;
2637 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2638 len = 1;
2639 if (put_user_u32(len, optlen)
2640 || put_user_u8(val, optval_addr))
2641 return -TARGET_EFAULT;
2642 } else {
2643 if (len > sizeof(int))
2644 len = sizeof(int);
2645 if (put_user_u32(len, optlen)
2646 || put_user_u32(val, optval_addr))
2647 return -TARGET_EFAULT;
2648 }
2649 break;
2650 default:
2651 ret = -TARGET_ENOPROTOOPT;
2652 break;
2653 }
2654 break;
2655 case SOL_IPV6:
2656 switch (optname) {
2657 case IPV6_MTU_DISCOVER:
2658 case IPV6_MTU:
2659 case IPV6_V6ONLY:
2660 case IPV6_RECVPKTINFO:
2661 case IPV6_UNICAST_HOPS:
2662 case IPV6_MULTICAST_HOPS:
2663 case IPV6_MULTICAST_LOOP:
2664 case IPV6_RECVERR:
2665 case IPV6_RECVHOPLIMIT:
2666 case IPV6_2292HOPLIMIT:
2667 case IPV6_CHECKSUM:
2668 case IPV6_ADDRFORM:
2669 case IPV6_2292PKTINFO:
2670 case IPV6_RECVTCLASS:
2671 case IPV6_RECVRTHDR:
2672 case IPV6_2292RTHDR:
2673 case IPV6_RECVHOPOPTS:
2674 case IPV6_2292HOPOPTS:
2675 case IPV6_RECVDSTOPTS:
2676 case IPV6_2292DSTOPTS:
2677 case IPV6_TCLASS:
2678 #ifdef IPV6_RECVPATHMTU
2679 case IPV6_RECVPATHMTU:
2680 #endif
2681 #ifdef IPV6_TRANSPARENT
2682 case IPV6_TRANSPARENT:
2683 #endif
2684 #ifdef IPV6_FREEBIND
2685 case IPV6_FREEBIND:
2686 #endif
2687 #ifdef IPV6_RECVORIGDSTADDR
2688 case IPV6_RECVORIGDSTADDR:
2689 #endif
2690 if (get_user_u32(len, optlen))
2691 return -TARGET_EFAULT;
2692 if (len < 0)
2693 return -TARGET_EINVAL;
2694 lv = sizeof(lv);
2695 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2696 if (ret < 0)
2697 return ret;
2698 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2699 len = 1;
2700 if (put_user_u32(len, optlen)
2701 || put_user_u8(val, optval_addr))
2702 return -TARGET_EFAULT;
2703 } else {
2704 if (len > sizeof(int))
2705 len = sizeof(int);
2706 if (put_user_u32(len, optlen)
2707 || put_user_u32(val, optval_addr))
2708 return -TARGET_EFAULT;
2709 }
2710 break;
2711 default:
2712 ret = -TARGET_ENOPROTOOPT;
2713 break;
2714 }
2715 break;
2716 #ifdef SOL_NETLINK
2717 case SOL_NETLINK:
2718 switch (optname) {
2719 case NETLINK_PKTINFO:
2720 case NETLINK_BROADCAST_ERROR:
2721 case NETLINK_NO_ENOBUFS:
2722 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2723 case NETLINK_LISTEN_ALL_NSID:
2724 case NETLINK_CAP_ACK:
2725 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2726 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0)
2727 case NETLINK_EXT_ACK:
2728 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2729 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)
2730 case NETLINK_GET_STRICT_CHK:
2731 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) */
2732 if (get_user_u32(len, optlen)) {
2733 return -TARGET_EFAULT;
2734 }
2735 if (len != sizeof(val)) {
2736 return -TARGET_EINVAL;
2737 }
2738 lv = len;
2739 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2740 if (ret < 0) {
2741 return ret;
2742 }
2743 if (put_user_u32(lv, optlen)
2744 || put_user_u32(val, optval_addr)) {
2745 return -TARGET_EFAULT;
2746 }
2747 break;
2748 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
2749 case NETLINK_LIST_MEMBERSHIPS:
2750 {
2751 uint32_t *results;
2752 int i;
2753 if (get_user_u32(len, optlen)) {
2754 return -TARGET_EFAULT;
2755 }
2756 if (len < 0) {
2757 return -TARGET_EINVAL;
2758 }
2759 results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
2760 if (!results) {
2761 return -TARGET_EFAULT;
2762 }
2763 lv = len;
2764 ret = get_errno(getsockopt(sockfd, level, optname, results, &lv));
2765 if (ret < 0) {
2766 unlock_user(results, optval_addr, 0);
2767 return ret;
2768 }
2769 /* swap host endianess to target endianess. */
2770 for (i = 0; i < (len / sizeof(uint32_t)); i++) {
2771 results[i] = tswap32(results[i]);
2772 }
2773 if (put_user_u32(lv, optlen)) {
2774 return -TARGET_EFAULT;
2775 }
2776 unlock_user(results, optval_addr, 0);
2777 break;
2778 }
2779 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) */
2780 default:
2781 goto unimplemented;
2782 }
2783 break;
2784 #endif /* SOL_NETLINK */
2785 default:
2786 unimplemented:
2787 qemu_log_mask(LOG_UNIMP,
2788 "getsockopt level=%d optname=%d not yet supported\n",
2789 level, optname);
2790 ret = -TARGET_EOPNOTSUPP;
2791 break;
2792 }
2793 return ret;
2794 }
2795
2796 /* Convert target low/high pair representing file offset into the host
2797 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2798 * as the kernel doesn't handle them either.
2799 */
2800 static void target_to_host_low_high(abi_ulong tlow,
2801 abi_ulong thigh,
2802 unsigned long *hlow,
2803 unsigned long *hhigh)
2804 {
2805 uint64_t off = tlow |
2806 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2807 TARGET_LONG_BITS / 2;
2808
2809 *hlow = off;
2810 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
2811 }
2812
2813 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
2814 abi_ulong count, int copy)
2815 {
2816 struct target_iovec *target_vec;
2817 struct iovec *vec;
2818 abi_ulong total_len, max_len;
2819 int i;
2820 int err = 0;
2821 bool bad_address = false;
2822
2823 if (count == 0) {
2824 errno = 0;
2825 return NULL;
2826 }
2827 if (count > IOV_MAX) {
2828 errno = EINVAL;
2829 return NULL;
2830 }
2831
2832 vec = g_try_new0(struct iovec, count);
2833 if (vec == NULL) {
2834 errno = ENOMEM;
2835 return NULL;
2836 }
2837
2838 target_vec = lock_user(VERIFY_READ, target_addr,
2839 count * sizeof(struct target_iovec), 1);
2840 if (target_vec == NULL) {
2841 err = EFAULT;
2842 goto fail2;
2843 }
2844
2845 /* ??? If host page size > target page size, this will result in a
2846 value larger than what we can actually support. */
2847 max_len = 0x7fffffff & TARGET_PAGE_MASK;
2848 total_len = 0;
2849
2850 for (i = 0; i < count; i++) {
2851 abi_ulong base = tswapal(target_vec[i].iov_base);
2852 abi_long len = tswapal(target_vec[i].iov_len);
2853
2854 if (len < 0) {
2855 err = EINVAL;
2856 goto fail;
2857 } else if (len == 0) {
2858 /* Zero length pointer is ignored. */
2859 vec[i].iov_base = 0;
2860 } else {
2861 vec[i].iov_base = lock_user(type, base, len, copy);
2862 /* If the first buffer pointer is bad, this is a fault. But
2863 * subsequent bad buffers will result in a partial write; this
2864 * is realized by filling the vector with null pointers and
2865 * zero lengths. */
2866 if (!vec[i].iov_base) {
2867 if (i == 0) {
2868 err = EFAULT;
2869 goto fail;
2870 } else {
2871 bad_address = true;
2872 }
2873 }
2874 if (bad_address) {
2875 len = 0;
2876 }
2877 if (len > max_len - total_len) {
2878 len = max_len - total_len;
2879 }
2880 }
2881 vec[i].iov_len = len;
2882 total_len += len;
2883 }
2884
2885 unlock_user(target_vec, target_addr, 0);
2886 return vec;
2887
2888 fail:
2889 while (--i >= 0) {
2890 if (tswapal(target_vec[i].iov_len) > 0) {
2891 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
2892 }
2893 }
2894 unlock_user(target_vec, target_addr, 0);
2895 fail2:
2896 g_free(vec);
2897 errno = err;
2898 return NULL;
2899 }
2900
2901 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
2902 abi_ulong count, int copy)
2903 {
2904 struct target_iovec *target_vec;
2905 int i;
2906
2907 target_vec = lock_user(VERIFY_READ, target_addr,
2908 count * sizeof(struct target_iovec), 1);
2909 if (target_vec) {
2910 for (i = 0; i < count; i++) {
2911 abi_ulong base = tswapal(target_vec[i].iov_base);
2912 abi_long len = tswapal(target_vec[i].iov_len);
2913 if (len < 0) {
2914 break;
2915 }
2916 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
2917 }
2918 unlock_user(target_vec, target_addr, 0);
2919 }
2920
2921 g_free(vec);
2922 }
2923
2924 static inline int target_to_host_sock_type(int *type)
2925 {
2926 int host_type = 0;
2927 int target_type = *type;
2928
2929 switch (target_type & TARGET_SOCK_TYPE_MASK) {
2930 case TARGET_SOCK_DGRAM:
2931 host_type = SOCK_DGRAM;
2932 break;
2933 case TARGET_SOCK_STREAM:
2934 host_type = SOCK_STREAM;
2935 break;
2936 default:
2937 host_type = target_type & TARGET_SOCK_TYPE_MASK;
2938 break;
2939 }
2940 if (target_type & TARGET_SOCK_CLOEXEC) {
2941 #if defined(SOCK_CLOEXEC)
2942 host_type |= SOCK_CLOEXEC;
2943 #else
2944 return -TARGET_EINVAL;
2945 #endif
2946 }
2947 if (target_type & TARGET_SOCK_NONBLOCK) {
2948 #if defined(SOCK_NONBLOCK)
2949 host_type |= SOCK_NONBLOCK;
2950 #elif !defined(O_NONBLOCK)
2951 return -TARGET_EINVAL;
2952 #endif
2953 }
2954 *type = host_type;
2955 return 0;
2956 }
2957
2958 /* Try to emulate socket type flags after socket creation. */
2959 static int sock_flags_fixup(int fd, int target_type)
2960 {
2961 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
2962 if (target_type & TARGET_SOCK_NONBLOCK) {
2963 int flags = fcntl(fd, F_GETFL);
2964 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
2965 close(fd);
2966 return -TARGET_EINVAL;
2967 }
2968 }
2969 #endif
2970 return fd;
2971 }
2972
2973 /* do_socket() Must return target values and target errnos. */
2974 static abi_long do_socket(int domain, int type, int protocol)
2975 {
2976 int target_type = type;
2977 int ret;
2978
2979 ret = target_to_host_sock_type(&type);
2980 if (ret) {
2981 return ret;
2982 }
2983
2984 if (domain == PF_NETLINK && !(
2985 #ifdef CONFIG_RTNETLINK
2986 protocol == NETLINK_ROUTE ||
2987 #endif
2988 protocol == NETLINK_KOBJECT_UEVENT ||
2989 protocol == NETLINK_AUDIT)) {
2990 return -EPFNOSUPPORT;
2991 }
2992
2993 if (domain == AF_PACKET ||
2994 (domain == AF_INET && type == SOCK_PACKET)) {
2995 protocol = tswap16(protocol);
2996 }
2997
2998 ret = get_errno(socket(domain, type, protocol));
2999 if (ret >= 0) {
3000 ret = sock_flags_fixup(ret, target_type);
3001 if (type == SOCK_PACKET) {
3002 /* Manage an obsolete case :
3003 * if socket type is SOCK_PACKET, bind by name
3004 */
3005 fd_trans_register(ret, &target_packet_trans);
3006 } else if (domain == PF_NETLINK) {
3007 switch (protocol) {
3008 #ifdef CONFIG_RTNETLINK
3009 case NETLINK_ROUTE:
3010 fd_trans_register(ret, &target_netlink_route_trans);
3011 break;
3012 #endif
3013 case NETLINK_KOBJECT_UEVENT:
3014 /* nothing to do: messages are strings */
3015 break;
3016 case NETLINK_AUDIT:
3017 fd_trans_register(ret, &target_netlink_audit_trans);
3018 break;
3019 default:
3020 g_assert_not_reached();
3021 }
3022 }
3023 }
3024 return ret;
3025 }
3026
3027 /* do_bind() Must return target values and target errnos. */
3028 static abi_long do_bind(int sockfd, abi_ulong target_addr,
3029 socklen_t addrlen)
3030 {
3031 void *addr;
3032 abi_long ret;
3033
3034 if ((int)addrlen < 0) {
3035 return -TARGET_EINVAL;
3036 }
3037
3038 addr = alloca(addrlen+1);
3039
3040 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3041 if (ret)
3042 return ret;
3043
3044 return get_errno(bind(sockfd, addr, addrlen));
3045 }
3046
3047 /* do_connect() Must return target values and target errnos. */
3048 static abi_long do_connect(int sockfd, abi_ulong target_addr,
3049 socklen_t addrlen)
3050 {
3051 void *addr;
3052 abi_long ret;
3053
3054 if ((int)addrlen < 0) {
3055 return -TARGET_EINVAL;
3056 }
3057
3058 addr = alloca(addrlen+1);
3059
3060 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
3061 if (ret)
3062 return ret;
3063
3064 return get_errno(safe_connect(sockfd, addr, addrlen));
3065 }
3066
3067 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
3068 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
3069 int flags, int send)
3070 {
3071 abi_long ret, len;
3072 struct msghdr msg;
3073 abi_ulong count;
3074 struct iovec *vec;
3075 abi_ulong target_vec;
3076
3077 if (msgp->msg_name) {
3078 msg.msg_namelen = tswap32(msgp->msg_namelen);
3079 msg.msg_name = alloca(msg.msg_namelen+1);
3080 ret = target_to_host_sockaddr(fd, msg.msg_name,
3081 tswapal(msgp->msg_name),
3082 msg.msg_namelen);
3083 if (ret == -TARGET_EFAULT) {
3084 /* For connected sockets msg_name and msg_namelen must
3085 * be ignored, so returning EFAULT immediately is wrong.
3086 * Instead, pass a bad msg_name to the host kernel, and
3087 * let it decide whether to return EFAULT or not.
3088 */
3089 msg.msg_name = (void *)-1;
3090 } else if (ret) {
3091 goto out2;
3092 }
3093 } else {
3094 msg.msg_name = NULL;
3095 msg.msg_namelen = 0;
3096 }
3097 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
3098 msg.msg_control = alloca(msg.msg_controllen);
3099 memset(msg.msg_control, 0, msg.msg_controllen);
3100
3101 msg.msg_flags = tswap32(msgp->msg_flags);
3102
3103 count = tswapal(msgp->msg_iovlen);
3104 target_vec = tswapal(msgp->msg_iov);
3105
3106 if (count > IOV_MAX) {
3107 /* sendrcvmsg returns a different errno for this condition than
3108 * readv/writev, so we must catch it here before lock_iovec() does.
3109 */
3110 ret = -TARGET_EMSGSIZE;
3111 goto out2;
3112 }
3113
3114 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
3115 target_vec, count, send);
3116 if (vec == NULL) {
3117 ret = -host_to_target_errno(errno);
3118 goto out2;
3119 }
3120 msg.msg_iovlen = count;
3121 msg.msg_iov = vec;
3122
3123 if (send) {
3124 if (fd_trans_target_to_host_data(fd)) {
3125 void *host_msg;
3126
3127 host_msg = g_malloc(msg.msg_iov->iov_len);
3128 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
3129 ret = fd_trans_target_to_host_data(fd)(host_msg,
3130 msg.msg_iov->iov_len);
3131 if (ret >= 0) {
3132 msg.msg_iov->iov_base = host_msg;
3133 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3134 }
3135 g_free(host_msg);
3136 } else {
3137 ret = target_to_host_cmsg(&msg, msgp);
3138 if (ret == 0) {
3139 ret = get_errno(safe_sendmsg(fd, &msg, flags));
3140 }
3141 }
3142 } else {
3143 ret = get_errno(safe_recvmsg(fd, &msg, flags));
3144 if (!is_error(ret)) {
3145 len = ret;
3146 if (fd_trans_host_to_target_data(fd)) {
3147 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
3148 MIN(msg.msg_iov->iov_len, len));
3149 } else {
3150 ret = host_to_target_cmsg(msgp, &msg);
3151 }
3152 if (!is_error(ret)) {
3153 msgp->msg_namelen = tswap32(msg.msg_namelen);
3154 msgp->msg_flags = tswap32(msg.msg_flags);
3155 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
3156 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
3157 msg.msg_name, msg.msg_namelen);
3158 if (ret) {
3159 goto out;
3160 }
3161 }
3162
3163 ret = len;
3164 }
3165 }
3166 }
3167
3168 out:
3169 unlock_iovec(vec, target_vec, count, !send);
3170 out2:
3171 return ret;
3172 }
3173
3174 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
3175 int flags, int send)
3176 {
3177 abi_long ret;
3178 struct target_msghdr *msgp;
3179
3180 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
3181 msgp,
3182 target_msg,
3183 send ? 1 : 0)) {
3184 return -TARGET_EFAULT;
3185 }
3186 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
3187 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
3188 return ret;
3189 }
3190
3191 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
3192 * so it might not have this *mmsg-specific flag either.
3193 */
3194 #ifndef MSG_WAITFORONE
3195 #define MSG_WAITFORONE 0x10000
3196 #endif
3197
3198 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
3199 unsigned int vlen, unsigned int flags,
3200 int send)
3201 {
3202 struct target_mmsghdr *mmsgp;
3203 abi_long ret = 0;
3204 int i;
3205
3206 if (vlen > UIO_MAXIOV) {
3207 vlen = UIO_MAXIOV;
3208 }
3209
3210 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
3211 if (!mmsgp) {
3212 return -TARGET_EFAULT;
3213 }
3214
3215 for (i = 0; i < vlen; i++) {
3216 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
3217 if (is_error(ret)) {
3218 break;
3219 }
3220 mmsgp[i].msg_len = tswap32(ret);
3221 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
3222 if (flags & MSG_WAITFORONE) {
3223 flags |= MSG_DONTWAIT;
3224 }
3225 }
3226
3227 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
3228
3229 /* Return number of datagrams sent if we sent any at all;
3230 * otherwise return the error.
3231 */
3232 if (i) {
3233 return i;
3234 }
3235 return ret;
3236 }
3237
3238 /* do_accept4() Must return target values and target errnos. */
3239 static abi_long do_accept4(int fd, abi_ulong target_addr,
3240 abi_ulong target_addrlen_addr, int flags)
3241 {
3242 socklen_t addrlen, ret_addrlen;
3243 void *addr;
3244 abi_long ret;
3245 int host_flags;
3246
3247 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
3248
3249 if (target_addr == 0) {
3250 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
3251 }
3252
3253 /* linux returns EINVAL if addrlen pointer is invalid */
3254 if (get_user_u32(addrlen, target_addrlen_addr))
3255 return -TARGET_EINVAL;
3256
3257 if ((int)addrlen < 0) {
3258 return -TARGET_EINVAL;
3259 }
3260
3261 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3262 return -TARGET_EINVAL;
3263
3264 addr = alloca(addrlen);
3265
3266 ret_addrlen = addrlen;
3267 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3268 if (!is_error(ret)) {
3269 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3270 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3271 ret = -TARGET_EFAULT;
3272 }
3273 }
3274 return ret;
3275 }
3276
3277 /* do_getpeername() Must return target values and target errnos. */
3278 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3279 abi_ulong target_addrlen_addr)
3280 {
3281 socklen_t addrlen, ret_addrlen;
3282 void *addr;
3283 abi_long ret;
3284
3285 if (get_user_u32(addrlen, target_addrlen_addr))
3286 return -TARGET_EFAULT;
3287
3288 if ((int)addrlen < 0) {
3289 return -TARGET_EINVAL;
3290 }
3291
3292 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3293 return -TARGET_EFAULT;
3294
3295 addr = alloca(addrlen);
3296
3297 ret_addrlen = addrlen;
3298 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3299 if (!is_error(ret)) {
3300 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3301 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3302 ret = -TARGET_EFAULT;
3303 }
3304 }
3305 return ret;
3306 }
3307
3308 /* do_getsockname() Must return target values and target errnos. */
3309 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3310 abi_ulong target_addrlen_addr)
3311 {
3312 socklen_t addrlen, ret_addrlen;
3313 void *addr;
3314 abi_long ret;
3315
3316 if (get_user_u32(addrlen, target_addrlen_addr))
3317 return -TARGET_EFAULT;
3318
3319 if ((int)addrlen < 0) {
3320 return -TARGET_EINVAL;
3321 }
3322
3323 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3324 return -TARGET_EFAULT;
3325
3326 addr = alloca(addrlen);
3327
3328 ret_addrlen = addrlen;
3329 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3330 if (!is_error(ret)) {
3331 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3332 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3333 ret = -TARGET_EFAULT;
3334 }
3335 }
3336 return ret;
3337 }
3338
3339 /* do_socketpair() Must return target values and target errnos. */
3340 static abi_long do_socketpair(int domain, int type, int protocol,
3341 abi_ulong target_tab_addr)
3342 {
3343 int tab[2];
3344 abi_long ret;
3345
3346 target_to_host_sock_type(&type);
3347
3348 ret = get_errno(socketpair(domain, type, protocol, tab));
3349 if (!is_error(ret)) {
3350 if (put_user_s32(tab[0], target_tab_addr)
3351 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3352 ret = -TARGET_EFAULT;
3353 }
3354 return ret;
3355 }
3356
3357 /* do_sendto() Must return target values and target errnos. */
3358 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3359 abi_ulong target_addr, socklen_t addrlen)
3360 {
3361 void *addr;
3362 void *host_msg;
3363 void *copy_msg = NULL;
3364 abi_long ret;
3365
3366 if ((int)addrlen < 0) {
3367 return -TARGET_EINVAL;
3368 }
3369
3370 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3371 if (!host_msg)
3372 return -TARGET_EFAULT;
3373 if (fd_trans_target_to_host_data(fd)) {
3374 copy_msg = host_msg;
3375 host_msg = g_malloc(len);
3376 memcpy(host_msg, copy_msg, len);
3377 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3378 if (ret < 0) {
3379 goto fail;
3380 }
3381 }
3382 if (target_addr) {
3383 addr = alloca(addrlen+1);
3384 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3385 if (ret) {
3386 goto fail;
3387 }
3388 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3389 } else {
3390 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3391 }
3392 fail:
3393 if (copy_msg) {
3394 g_free(host_msg);
3395 host_msg = copy_msg;
3396 }
3397 unlock_user(host_msg, msg, 0);
3398 return ret;
3399 }
3400
3401 /* do_recvfrom() Must return target values and target errnos. */
3402 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3403 abi_ulong target_addr,
3404 abi_ulong target_addrlen)
3405 {
3406 socklen_t addrlen, ret_addrlen;
3407 void *addr;
3408 void *host_msg;
3409 abi_long ret;
3410
3411 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3412 if (!host_msg)
3413 return -TARGET_EFAULT;
3414 if (target_addr) {
3415 if (get_user_u32(addrlen, target_addrlen)) {
3416 ret = -TARGET_EFAULT;
3417 goto fail;
3418 }
3419 if ((int)addrlen < 0) {
3420 ret = -TARGET_EINVAL;
3421 goto fail;
3422 }
3423 addr = alloca(addrlen);
3424 ret_addrlen = addrlen;
3425 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3426 addr, &ret_addrlen));
3427 } else {
3428 addr = NULL; /* To keep compiler quiet. */
3429 addrlen = 0; /* To keep compiler quiet. */
3430 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3431 }
3432 if (!is_error(ret)) {
3433 if (fd_trans_host_to_target_data(fd)) {
3434 abi_long trans;
3435 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3436 if (is_error(trans)) {
3437 ret = trans;
3438 goto fail;
3439 }
3440 }
3441 if (target_addr) {
3442 host_to_target_sockaddr(target_addr, addr,
3443 MIN(addrlen, ret_addrlen));
3444 if (put_user_u32(ret_addrlen, target_addrlen)) {
3445 ret = -TARGET_EFAULT;
3446 goto fail;
3447 }
3448 }
3449 unlock_user(host_msg, msg, len);
3450 } else {
3451 fail:
3452 unlock_user(host_msg, msg, 0);
3453 }
3454 return ret;
3455 }
3456
3457 #ifdef TARGET_NR_socketcall
3458 /* do_socketcall() must return target values and target errnos. */
3459 static abi_long do_socketcall(int num, abi_ulong vptr)
3460 {
3461 static const unsigned nargs[] = { /* number of arguments per operation */
3462 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3463 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3464 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3465 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3466 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3467 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3468 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3469 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3470 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3471 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3472 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3473 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3474 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3475 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3476 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3477 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3478 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3479 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3480 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3481 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3482 };
3483 abi_long a[6]; /* max 6 args */
3484 unsigned i;
3485
3486 /* check the range of the first argument num */
3487 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3488 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3489 return -TARGET_EINVAL;
3490 }
3491 /* ensure we have space for args */
3492 if (nargs[num] > ARRAY_SIZE(a)) {
3493 return -TARGET_EINVAL;
3494 }
3495 /* collect the arguments in a[] according to nargs[] */
3496 for (i = 0; i < nargs[num]; ++i) {
3497 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3498 return -TARGET_EFAULT;
3499 }
3500 }
3501 /* now when we have the args, invoke the appropriate underlying function */
3502 switch (num) {
3503 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3504 return do_socket(a[0], a[1], a[2]);
3505 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3506 return do_bind(a[0], a[1], a[2]);
3507 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3508 return do_connect(a[0], a[1], a[2]);
3509 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3510 return get_errno(listen(a[0], a[1]));
3511 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3512 return do_accept4(a[0], a[1], a[2], 0);
3513 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3514 return do_getsockname(a[0], a[1], a[2]);
3515 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3516 return do_getpeername(a[0], a[1], a[2]);
3517 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3518 return do_socketpair(a[0], a[1], a[2], a[3]);
3519 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3520 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3521 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3522 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3523 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3524 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3525 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3526 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3527 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3528 return get_errno(shutdown(a[0], a[1]));
3529 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3530 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3531 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3532 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3533 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3534 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3535 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3536 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3537 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3538 return do_accept4(a[0], a[1], a[2], a[3]);
3539 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3540 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3541 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3542 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3543 default:
3544 qemu_log_mask(LOG_UNIMP, "Unsupported socketcall: %d\n", num);
3545 return -TARGET_EINVAL;
3546 }
3547 }
3548 #endif
3549
3550 #define N_SHM_REGIONS 32
3551
3552 static struct shm_region {
3553 abi_ulong start;
3554 abi_ulong size;
3555 bool in_use;
3556 } shm_regions[N_SHM_REGIONS];
3557
3558 #ifndef TARGET_SEMID64_DS
3559 /* asm-generic version of this struct */
3560 struct target_semid64_ds
3561 {
3562 struct target_ipc_perm sem_perm;
3563 abi_ulong sem_otime;
3564 #if TARGET_ABI_BITS == 32
3565 abi_ulong __unused1;
3566 #endif
3567 abi_ulong sem_ctime;
3568 #if TARGET_ABI_BITS == 32
3569 abi_ulong __unused2;
3570 #endif
3571 abi_ulong sem_nsems;
3572 abi_ulong __unused3;
3573 abi_ulong __unused4;
3574 };
3575 #endif
3576
3577 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3578 abi_ulong target_addr)
3579 {
3580 struct target_ipc_perm *target_ip;
3581 struct target_semid64_ds *target_sd;
3582
3583 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3584 return -TARGET_EFAULT;
3585 target_ip = &(target_sd->sem_perm);
3586 host_ip->__key = tswap32(target_ip->__key);
3587 host_ip->uid = tswap32(target_ip->uid);
3588 host_ip->gid = tswap32(target_ip->gid);
3589 host_ip->cuid = tswap32(target_ip->cuid);
3590 host_ip->cgid = tswap32(target_ip->cgid);
3591 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3592 host_ip->mode = tswap32(target_ip->mode);
3593 #else
3594 host_ip->mode = tswap16(target_ip->mode);
3595 #endif
3596 #if defined(TARGET_PPC)
3597 host_ip->__seq = tswap32(target_ip->__seq);
3598 #else
3599 host_ip->__seq = tswap16(target_ip->__seq);
3600 #endif
3601 unlock_user_struct(target_sd, target_addr, 0);
3602 return 0;
3603 }
3604
3605 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3606 struct ipc_perm *host_ip)
3607 {
3608 struct target_ipc_perm *target_ip;
3609 struct target_semid64_ds *target_sd;
3610
3611 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3612 return -TARGET_EFAULT;
3613 target_ip = &(target_sd->sem_perm);
3614 target_ip->__key = tswap32(host_ip->__key);
3615 target_ip->uid = tswap32(host_ip->uid);
3616 target_ip->gid = tswap32(host_ip->gid);
3617 target_ip->cuid = tswap32(host_ip->cuid);
3618 target_ip->cgid = tswap32(host_ip->cgid);
3619 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3620 target_ip->mode = tswap32(host_ip->mode);
3621 #else
3622 target_ip->mode = tswap16(host_ip->mode);
3623 #endif
3624 #if defined(TARGET_PPC)
3625 target_ip->__seq = tswap32(host_ip->__seq);
3626 #else
3627 target_ip->__seq = tswap16(host_ip->__seq);
3628 #endif
3629 unlock_user_struct(target_sd, target_addr, 1);
3630 return 0;
3631 }
3632
3633 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3634 abi_ulong target_addr)
3635 {
3636 struct target_semid64_ds *target_sd;
3637
3638 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3639 return -TARGET_EFAULT;
3640 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3641 return -TARGET_EFAULT;
3642 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3643 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3644 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3645 unlock_user_struct(target_sd, target_addr, 0);
3646 return 0;
3647 }
3648
3649 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3650 struct semid_ds *host_sd)
3651 {
3652 struct target_semid64_ds *target_sd;
3653
3654 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3655 return -TARGET_EFAULT;
3656 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3657 return -TARGET_EFAULT;
3658 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3659 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3660 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3661 unlock_user_struct(target_sd, target_addr, 1);
3662 return 0;
3663 }
3664
3665 struct target_seminfo {
3666 int semmap;
3667 int semmni;
3668 int semmns;
3669 int semmnu;
3670 int semmsl;
3671 int semopm;
3672 int semume;
3673 int semusz;
3674 int semvmx;
3675 int semaem;
3676 };
3677
3678 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3679 struct seminfo *host_seminfo)
3680 {
3681 struct target_seminfo *target_seminfo;
3682 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3683 return -TARGET_EFAULT;
3684 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3685 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3686 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3687 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3688 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3689 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3690 __put_user(host_seminfo->semume, &target_seminfo->semume);
3691 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3692 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3693 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3694 unlock_user_struct(target_seminfo, target_addr, 1);
3695 return 0;
3696 }
3697
3698 union semun {
3699 int val;
3700 struct semid_ds *buf;
3701 unsigned short *array;
3702 struct seminfo *__buf;
3703 };
3704
3705 union target_semun {
3706 int val;
3707 abi_ulong buf;
3708 abi_ulong array;
3709 abi_ulong __buf;
3710 };
3711
3712 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3713 abi_ulong target_addr)
3714 {
3715 int nsems;
3716 unsigned short *array;
3717 union semun semun;
3718 struct semid_ds semid_ds;
3719 int i, ret;
3720
3721 semun.buf = &semid_ds;
3722
3723 ret = semctl(semid, 0, IPC_STAT, semun);
3724 if (ret == -1)
3725 return get_errno(ret);
3726
3727 nsems = semid_ds.sem_nsems;
3728
3729 *host_array = g_try_new(unsigned short, nsems);
3730 if (!*host_array) {
3731 return -TARGET_ENOMEM;
3732 }
3733 array = lock_user(VERIFY_READ, target_addr,
3734 nsems*sizeof(unsigned short), 1);
3735 if (!array) {
3736 g_free(*host_array);
3737 return -TARGET_EFAULT;
3738 }
3739
3740 for(i=0; i<nsems; i++) {
3741 __get_user((*host_array)[i], &array[i]);
3742 }
3743 unlock_user(array, target_addr, 0);
3744
3745 return 0;
3746 }
3747
3748 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3749 unsigned short **host_array)
3750 {
3751 int nsems;
3752 unsigned short *array;
3753 union semun semun;
3754 struct semid_ds semid_ds;
3755 int i, ret;
3756
3757 semun.buf = &semid_ds;
3758
3759 ret = semctl(semid, 0, IPC_STAT, semun);
3760 if (ret == -1)
3761 return get_errno(ret);
3762
3763 nsems = semid_ds.sem_nsems;
3764
3765 array = lock_user(VERIFY_WRITE, target_addr,
3766 nsems*sizeof(unsigned short), 0);
3767 if (!array)
3768 return -TARGET_EFAULT;
3769
3770 for(i=0; i<nsems; i++) {
3771 __put_user((*host_array)[i], &array[i]);
3772 }
3773 g_free(*host_array);
3774 unlock_user(array, target_addr, 1);
3775
3776 return 0;
3777 }
3778
3779 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3780 abi_ulong target_arg)
3781 {
3782 union target_semun target_su = { .buf = target_arg };
3783 union semun arg;
3784 struct semid_ds dsarg;
3785 unsigned short *array = NULL;
3786 struct seminfo seminfo;
3787 abi_long ret = -TARGET_EINVAL;
3788 abi_long err;
3789 cmd &= 0xff;
3790
3791 switch( cmd ) {
3792 case GETVAL:
3793 case SETVAL:
3794 /* In 64 bit cross-endian situations, we will erroneously pick up
3795 * the wrong half of the union for the "val" element. To rectify
3796 * this, the entire 8-byte structure is byteswapped, followed by
3797 * a swap of the 4 byte val field. In other cases, the data is
3798 * already in proper host byte order. */
3799 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
3800 target_su.buf = tswapal(target_su.buf);
3801 arg.val = tswap32(target_su.val);
3802 } else {
3803 arg.val = target_su.val;
3804 }
3805 ret = get_errno(semctl(semid, semnum, cmd, arg));
3806 break;
3807 case GETALL:
3808 case SETALL:
3809 err = target_to_host_semarray(semid, &array, target_su.array);
3810 if (err)
3811 return err;
3812 arg.array = array;
3813 ret = get_errno(semctl(semid, semnum, cmd, arg));
3814 err = host_to_target_semarray(semid, target_su.array, &array);
3815 if (err)
3816 return err;
3817 break;
3818 case IPC_STAT:
3819 case IPC_SET:
3820 case SEM_STAT:
3821 err = target_to_host_semid_ds(&dsarg, target_su.buf);
3822 if (err)
3823 return err;
3824 arg.buf = &dsarg;
3825 ret = get_errno(semctl(semid, semnum, cmd, arg));
3826 err = host_to_target_semid_ds(target_su.buf, &dsarg);
3827 if (err)
3828 return err;
3829 break;
3830 case IPC_INFO:
3831 case SEM_INFO:
3832 arg.__buf = &seminfo;
3833 ret = get_errno(semctl(semid, semnum, cmd, arg));
3834 err = host_to_target_seminfo(target_su.__buf, &seminfo);
3835 if (err)
3836 return err;
3837 break;
3838 case IPC_RMID:
3839 case GETPID:
3840 case GETNCNT:
3841 case GETZCNT:
3842 ret = get_errno(semctl(semid, semnum, cmd, NULL));
3843 break;
3844 }
3845
3846 return ret;
3847 }
3848
3849 struct target_sembuf {
3850 unsigned short sem_num;
3851 short sem_op;
3852 short sem_flg;
3853 };
3854
3855 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
3856 abi_ulong target_addr,
3857 unsigned nsops)
3858 {
3859 struct target_sembuf *target_sembuf;
3860 int i;
3861
3862 target_sembuf = lock_user(VERIFY_READ, target_addr,
3863 nsops*sizeof(struct target_sembuf), 1);
3864 if (!target_sembuf)
3865 return -TARGET_EFAULT;
3866
3867 for(i=0; i<nsops; i++) {
3868 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
3869 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
3870 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
3871 }
3872
3873 unlock_user(target_sembuf, target_addr, 0);
3874
3875 return 0;
3876 }
3877
3878 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
3879 {
3880 struct sembuf sops[nsops];
3881 abi_long ret;
3882
3883 if (target_to_host_sembuf(sops, ptr, nsops))
3884 return -TARGET_EFAULT;
3885
3886 ret = -TARGET_ENOSYS;
3887 #ifdef __NR_semtimedop
3888 ret = get_errno(safe_semtimedop(semid, sops, nsops, NULL));
3889 #endif
3890 #ifdef __NR_ipc
3891 if (ret == -TARGET_ENOSYS) {
3892 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, nsops, 0, sops, 0));
3893 }
3894 #endif
3895 return ret;
3896 }
3897
3898 struct target_msqid_ds
3899 {
3900 struct target_ipc_perm msg_perm;
3901 abi_ulong msg_stime;
3902 #if TARGET_ABI_BITS == 32
3903 abi_ulong __unused1;
3904 #endif
3905 abi_ulong msg_rtime;
3906 #if TARGET_ABI_BITS == 32
3907 abi_ulong __unused2;
3908 #endif
3909 abi_ulong msg_ctime;
3910 #if TARGET_ABI_BITS == 32
3911 abi_ulong __unused3;
3912 #endif
3913 abi_ulong __msg_cbytes;
3914 abi_ulong msg_qnum;
3915 abi_ulong msg_qbytes;
3916 abi_ulong msg_lspid;
3917 abi_ulong msg_lrpid;
3918 abi_ulong __unused4;
3919 abi_ulong __unused5;
3920 };
3921
3922 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
3923 abi_ulong target_addr)
3924 {
3925 struct target_msqid_ds *target_md;
3926
3927 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
3928 return -TARGET_EFAULT;
3929 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
3930 return -TARGET_EFAULT;
3931 host_md->msg_stime = tswapal(target_md->msg_stime);
3932 host_md->msg_rtime = tswapal(target_md->msg_rtime);
3933 host_md->msg_ctime = tswapal(target_md->msg_ctime);
3934 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
3935 host_md->msg_qnum = tswapal(target_md->msg_qnum);
3936 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
3937 host_md->msg_lspid = tswapal(target_md->msg_lspid);
3938 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
3939 unlock_user_struct(target_md, target_addr, 0);
3940 return 0;
3941 }
3942
3943 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
3944 struct msqid_ds *host_md)
3945 {
3946 struct target_msqid_ds *target_md;
3947
3948 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
3949 return -TARGET_EFAULT;
3950 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
3951 return -TARGET_EFAULT;
3952 target_md->msg_stime = tswapal(host_md->msg_stime);
3953 target_md->msg_rtime = tswapal(host_md->msg_rtime);
3954 target_md->msg_ctime = tswapal(host_md->msg_ctime);
3955 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
3956 target_md->msg_qnum = tswapal(host_md->msg_qnum);
3957 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
3958 target_md->msg_lspid = tswapal(host_md->msg_lspid);
3959 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
3960 unlock_user_struct(target_md, target_addr, 1);
3961 return 0;
3962 }
3963
3964 struct target_msginfo {
3965 int msgpool;
3966 int msgmap;
3967 int msgmax;
3968 int msgmnb;
3969 int msgmni;
3970 int msgssz;
3971 int msgtql;
3972 unsigned short int msgseg;
3973 };
3974
3975 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
3976 struct msginfo *host_msginfo)
3977 {
3978 struct target_msginfo *target_msginfo;
3979 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
3980 return -TARGET_EFAULT;
3981 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
3982 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
3983 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
3984 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
3985 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
3986 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
3987 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
3988 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
3989 unlock_user_struct(target_msginfo, target_addr, 1);
3990 return 0;
3991 }
3992
3993 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
3994 {
3995 struct msqid_ds dsarg;
3996 struct msginfo msginfo;
3997 abi_long ret = -TARGET_EINVAL;
3998
3999 cmd &= 0xff;
4000
4001 switch (cmd) {
4002 case IPC_STAT:
4003 case IPC_SET:
4004 case MSG_STAT:
4005 if (target_to_host_msqid_ds(&dsarg,ptr))
4006 return -TARGET_EFAULT;
4007 ret = get_errno(msgctl(msgid, cmd, &dsarg));
4008 if (host_to_target_msqid_ds(ptr,&dsarg))
4009 return -TARGET_EFAULT;
4010 break;
4011 case IPC_RMID:
4012 ret = get_errno(msgctl(msgid, cmd, NULL));
4013 break;
4014 case IPC_INFO:
4015 case MSG_INFO:
4016 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
4017 if (host_to_target_msginfo(ptr, &msginfo))
4018 return -TARGET_EFAULT;
4019 break;
4020 }
4021
4022 return ret;
4023 }
4024
4025 struct target_msgbuf {
4026 abi_long mtype;
4027 char mtext[1];
4028 };
4029
4030 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
4031 ssize_t msgsz, int msgflg)
4032 {
4033 struct target_msgbuf *target_mb;
4034 struct msgbuf *host_mb;
4035 abi_long ret = 0;
4036
4037 if (msgsz < 0) {
4038 return -TARGET_EINVAL;
4039 }
4040
4041 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
4042 return -TARGET_EFAULT;
4043 host_mb = g_try_malloc(msgsz + sizeof(long));
4044 if (!host_mb) {
4045 unlock_user_struct(target_mb, msgp, 0);
4046 return -TARGET_ENOMEM;
4047 }
4048 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
4049 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
4050 ret = -TARGET_ENOSYS;
4051 #ifdef __NR_msgsnd
4052 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
4053 #endif
4054 #ifdef __NR_ipc
4055 if (ret == -TARGET_ENOSYS) {
4056 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
4057 host_mb, 0));
4058 }
4059 #endif
4060 g_free(host_mb);
4061 unlock_user_struct(target_mb, msgp, 0);
4062
4063 return ret;
4064 }
4065
4066 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
4067 ssize_t msgsz, abi_long msgtyp,
4068 int msgflg)
4069 {
4070 struct target_msgbuf *target_mb;
4071 char *target_mtext;
4072 struct msgbuf *host_mb;
4073 abi_long ret = 0;
4074
4075 if (msgsz < 0) {
4076 return -TARGET_EINVAL;
4077 }
4078
4079 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
4080 return -TARGET_EFAULT;
4081
4082 host_mb = g_try_malloc(msgsz + sizeof(long));
4083 if (!host_mb) {
4084 ret = -TARGET_ENOMEM;
4085 goto end;
4086 }
4087 ret = -TARGET_ENOSYS;
4088 #ifdef __NR_msgrcv
4089 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
4090 #endif
4091 #ifdef __NR_ipc
4092 if (ret == -TARGET_ENOSYS) {
4093 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
4094 msgflg, host_mb, msgtyp));
4095 }
4096 #endif
4097
4098 if (ret > 0) {
4099 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
4100 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
4101 if (!target_mtext) {
4102 ret = -TARGET_EFAULT;
4103 goto end;
4104 }
4105 memcpy(target_mb->mtext, host_mb->mtext, ret);
4106 unlock_user(target_mtext, target_mtext_addr, ret);
4107 }
4108
4109 target_mb->mtype = tswapal(host_mb->mtype);
4110
4111 end:
4112 if (target_mb)
4113 unlock_user_struct(target_mb, msgp, 1);
4114 g_free(host_mb);
4115 return ret;
4116 }
4117
4118 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
4119 abi_ulong target_addr)
4120 {
4121 struct target_shmid_ds *target_sd;
4122
4123 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
4124 return -TARGET_EFAULT;
4125 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
4126 return -TARGET_EFAULT;
4127 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4128 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
4129 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4130 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4131 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4132 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4133 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4134 unlock_user_struct(target_sd, target_addr, 0);
4135 return 0;
4136 }
4137
4138 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
4139 struct shmid_ds *host_sd)
4140 {
4141 struct target_shmid_ds *target_sd;
4142
4143 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
4144 return -TARGET_EFAULT;
4145 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
4146 return -TARGET_EFAULT;
4147 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
4148 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
4149 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
4150 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
4151 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
4152 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
4153 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
4154 unlock_user_struct(target_sd, target_addr, 1);
4155 return 0;
4156 }
4157
4158 struct target_shminfo {
4159 abi_ulong shmmax;
4160 abi_ulong shmmin;
4161 abi_ulong shmmni;
4162 abi_ulong shmseg;
4163 abi_ulong shmall;
4164 };
4165
4166 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
4167 struct shminfo *host_shminfo)
4168 {
4169 struct target_shminfo *target_shminfo;
4170 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
4171 return -TARGET_EFAULT;
4172 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
4173 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
4174 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
4175 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
4176 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
4177 unlock_user_struct(target_shminfo, target_addr, 1);
4178 return 0;
4179 }
4180
4181 struct target_shm_info {
4182 int used_ids;
4183 abi_ulong shm_tot;
4184 abi_ulong shm_rss;
4185 abi_ulong shm_swp;
4186 abi_ulong swap_attempts;
4187 abi_ulong swap_successes;
4188 };
4189
4190 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
4191 struct shm_info *host_shm_info)
4192 {
4193 struct target_shm_info *target_shm_info;
4194 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
4195 return -TARGET_EFAULT;
4196 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
4197 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
4198 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
4199 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
4200 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
4201 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
4202 unlock_user_struct(target_shm_info, target_addr, 1);
4203 return 0;
4204 }
4205
4206 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
4207 {
4208 struct shmid_ds dsarg;
4209 struct shminfo shminfo;
4210 struct shm_info shm_info;
4211 abi_long ret = -TARGET_EINVAL;
4212
4213 cmd &= 0xff;
4214
4215 switch(cmd) {
4216 case IPC_STAT:
4217 case IPC_SET:
4218 case SHM_STAT:
4219 if (target_to_host_shmid_ds(&dsarg, buf))
4220 return -TARGET_EFAULT;
4221 ret = get_errno(shmctl(shmid, cmd, &dsarg));
4222 if (host_to_target_shmid_ds(buf, &dsarg))
4223 return -TARGET_EFAULT;
4224 break;
4225 case IPC_INFO:
4226 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
4227 if (host_to_target_shminfo(buf, &shminfo))
4228 return -TARGET_EFAULT;
4229 break;
4230 case SHM_INFO:
4231 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
4232 if (host_to_target_shm_info(buf, &shm_info))
4233 return -TARGET_EFAULT;
4234 break;
4235 case IPC_RMID:
4236 case SHM_LOCK:
4237 case SHM_UNLOCK:
4238 ret = get_errno(shmctl(shmid, cmd, NULL));
4239 break;
4240 }
4241
4242 return ret;
4243 }
4244
4245 #ifndef TARGET_FORCE_SHMLBA
4246 /* For most architectures, SHMLBA is the same as the page size;
4247 * some architectures have larger values, in which case they should
4248 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
4249 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
4250 * and defining its own value for SHMLBA.
4251 *
4252 * The kernel also permits SHMLBA to be set by the architecture to a
4253 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
4254 * this means that addresses are rounded to the large size if
4255 * SHM_RND is set but addresses not aligned to that size are not rejected
4256 * as long as they are at least page-aligned. Since the only architecture
4257 * which uses this is ia64 this code doesn't provide for that oddity.
4258 */
4259 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4260 {
4261 return TARGET_PAGE_SIZE;
4262 }
4263 #endif
4264
4265 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4266 int shmid, abi_ulong shmaddr, int shmflg)
4267 {
4268 abi_long raddr;
4269 void *host_raddr;
4270 struct shmid_ds shm_info;
4271 int i,ret;
4272 abi_ulong shmlba;
4273
4274 /* find out the length of the shared memory segment */
4275 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4276 if (is_error(ret)) {
4277 /* can't get length, bail out */
4278 return ret;
4279 }
4280
4281 shmlba = target_shmlba(cpu_env);
4282
4283 if (shmaddr & (shmlba - 1)) {
4284 if (shmflg & SHM_RND) {
4285 shmaddr &= ~(shmlba - 1);
4286 } else {
4287 return -TARGET_EINVAL;
4288 }
4289 }
4290 if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) {
4291 return -TARGET_EINVAL;
4292 }
4293
4294 mmap_lock();
4295
4296 if (shmaddr)
4297 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
4298 else {
4299 abi_ulong mmap_start;
4300
4301 /* In order to use the host shmat, we need to honor host SHMLBA. */
4302 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
4303
4304 if (mmap_start == -1) {
4305 errno = ENOMEM;
4306 host_raddr = (void *)-1;
4307 } else
4308 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
4309 }
4310
4311 if (host_raddr == (void *)-1) {
4312 mmap_unlock();
4313 return get_errno((long)host_raddr);
4314 }
4315 raddr=h2g((unsigned long)host_raddr);
4316
4317 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4318 PAGE_VALID | PAGE_READ |
4319 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
4320
4321 for (i = 0; i < N_SHM_REGIONS; i++) {
4322 if (!shm_regions[i].in_use) {
4323 shm_regions[i].in_use = true;
4324 shm_regions[i].start = raddr;
4325 shm_regions[i].size = shm_info.shm_segsz;
4326 break;
4327 }
4328 }
4329
4330 mmap_unlock();
4331 return raddr;
4332
4333 }
4334
4335 static inline abi_long do_shmdt(abi_ulong shmaddr)
4336 {
4337 int i;
4338 abi_long rv;
4339
4340 mmap_lock();
4341
4342 for (i = 0; i < N_SHM_REGIONS; ++i) {
4343 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4344 shm_regions[i].in_use = false;
4345 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4346 break;
4347 }
4348 }
4349 rv = get_errno(shmdt(g2h(shmaddr)));
4350
4351 mmap_unlock();
4352
4353 return rv;
4354 }
4355
4356 #ifdef TARGET_NR_ipc
4357 /* ??? This only works with linear mappings. */
4358 /* do_ipc() must return target values and target errnos. */
4359 static abi_long do_ipc(CPUArchState *cpu_env,
4360 unsigned int call, abi_long first,
4361 abi_long second, abi_long third,
4362 abi_long ptr, abi_long fifth)
4363 {
4364 int version;
4365 abi_long ret = 0;
4366
4367 version = call >> 16;
4368 call &= 0xffff;
4369
4370 switch (call) {
4371 case IPCOP_semop:
4372 ret = do_semop(first, ptr, second);
4373 break;
4374
4375 case IPCOP_semget:
4376 ret = get_errno(semget(first, second, third));
4377 break;
4378
4379 case IPCOP_semctl: {
4380 /* The semun argument to semctl is passed by value, so dereference the
4381 * ptr argument. */
4382 abi_ulong atptr;
4383 get_user_ual(atptr, ptr);
4384 ret = do_semctl(first, second, third, atptr);
4385 break;
4386 }
4387
4388 case IPCOP_msgget:
4389 ret = get_errno(msgget(first, second));
4390 break;
4391
4392 case IPCOP_msgsnd:
4393 ret = do_msgsnd(first, ptr, second, third);
4394 break;
4395
4396 case IPCOP_msgctl:
4397 ret = do_msgctl(first, second, ptr);
4398 break;
4399
4400 case IPCOP_msgrcv:
4401 switch (version) {
4402 case 0:
4403 {
4404 struct target_ipc_kludge {
4405 abi_long msgp;
4406 abi_long msgtyp;
4407 } *tmp;
4408
4409 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4410 ret = -TARGET_EFAULT;
4411 break;
4412 }
4413
4414 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4415
4416 unlock_user_struct(tmp, ptr, 0);
4417 break;
4418 }
4419 default:
4420 ret = do_msgrcv(first, ptr, second, fifth, third);
4421 }
4422 break;
4423
4424 case IPCOP_shmat:
4425 switch (version) {
4426 default:
4427 {
4428 abi_ulong raddr;
4429 raddr = do_shmat(cpu_env, first, ptr, second);
4430 if (is_error(raddr))
4431 return get_errno(raddr);
4432 if (put_user_ual(raddr, third))
4433 return -TARGET_EFAULT;
4434 break;
4435 }
4436 case 1:
4437 ret = -TARGET_EINVAL;
4438 break;
4439 }
4440 break;
4441 case IPCOP_shmdt:
4442 ret = do_shmdt(ptr);
4443 break;
4444
4445 case IPCOP_shmget:
4446 /* IPC_* flag values are the same on all linux platforms */
4447 ret = get_errno(shmget(first, second, third));
4448 break;
4449
4450 /* IPC_* and SHM_* command values are the same on all linux platforms */
4451 case IPCOP_shmctl:
4452 ret = do_shmctl(first, second, ptr);
4453 break;
4454 default:
4455 qemu_log_mask(LOG_UNIMP, "Unsupported ipc call: %d (version %d)\n",
4456 call, version);
4457 ret = -TARGET_ENOSYS;
4458 break;
4459 }
4460 return ret;
4461 }
4462 #endif
4463
4464 /* kernel structure types definitions */
4465
4466 #define STRUCT(name, ...) STRUCT_ ## name,
4467 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4468 enum {
4469 #include "syscall_types.h"
4470 STRUCT_MAX
4471 };
4472 #undef STRUCT
4473 #undef STRUCT_SPECIAL
4474
4475 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4476 #define STRUCT_SPECIAL(name)
4477 #include "syscall_types.h"
4478 #undef STRUCT
4479 #undef STRUCT_SPECIAL
4480
4481 typedef struct IOCTLEntry IOCTLEntry;
4482
4483 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
4484 int fd, int cmd, abi_long arg);
4485
4486 struct IOCTLEntry {
4487 int target_cmd;
4488 unsigned int host_cmd;
4489 const char *name;
4490 int access;
4491 do_ioctl_fn *do_ioctl;
4492 const argtype arg_type[5];
4493 };
4494
4495 #define IOC_R 0x0001
4496 #define IOC_W 0x0002
4497 #define IOC_RW (IOC_R | IOC_W)
4498
4499 #define MAX_STRUCT_SIZE 4096
4500
4501 #ifdef CONFIG_FIEMAP
4502 /* So fiemap access checks don't overflow on 32 bit systems.
4503 * This is very slightly smaller than the limit imposed by
4504 * the underlying kernel.
4505 */
4506 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4507 / sizeof(struct fiemap_extent))
4508
4509 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4510 int fd, int cmd, abi_long arg)
4511 {
4512 /* The parameter for this ioctl is a struct fiemap followed
4513 * by an array of struct fiemap_extent whose size is set
4514 * in fiemap->fm_extent_count. The array is filled in by the
4515 * ioctl.
4516 */
4517 int target_size_in, target_size_out;
4518 struct fiemap *fm;
4519 const argtype *arg_type = ie->arg_type;
4520 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4521 void *argptr, *p;
4522 abi_long ret;
4523 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4524 uint32_t outbufsz;
4525 int free_fm = 0;
4526
4527 assert(arg_type[0] == TYPE_PTR);
4528 assert(ie->access == IOC_RW);
4529 arg_type++;
4530 target_size_in = thunk_type_size(arg_type, 0);
4531 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4532 if (!argptr) {
4533 return -TARGET_EFAULT;
4534 }
4535 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4536 unlock_user(argptr, arg, 0);
4537 fm = (struct fiemap *)buf_temp;
4538 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4539 return -TARGET_EINVAL;
4540 }
4541
4542 outbufsz = sizeof (*fm) +
4543 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4544
4545 if (outbufsz > MAX_STRUCT_SIZE) {
4546 /* We can't fit all the extents into the fixed size buffer.
4547 * Allocate one that is large enough and use it instead.
4548 */
4549 fm = g_try_malloc(outbufsz);
4550 if (!fm) {
4551 return -TARGET_ENOMEM;
4552 }
4553 memcpy(fm, buf_temp, sizeof(struct fiemap));
4554 free_fm = 1;
4555 }
4556 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4557 if (!is_error(ret)) {
4558 target_size_out = target_size_in;
4559 /* An extent_count of 0 means we were only counting the extents
4560 * so there are no structs to copy
4561 */
4562 if (fm->fm_extent_count != 0) {
4563 target_size_out += fm->fm_mapped_extents * extent_size;
4564 }
4565 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4566 if (!argptr) {
4567 ret = -TARGET_EFAULT;
4568 } else {
4569 /* Convert the struct fiemap */
4570 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4571 if (fm->fm_extent_count != 0) {
4572 p = argptr + target_size_in;
4573 /* ...and then all the struct fiemap_extents */
4574 for (i = 0; i < fm->fm_mapped_extents; i++) {
4575 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4576 THUNK_TARGET);
4577 p += extent_size;
4578 }
4579 }
4580 unlock_user(argptr, arg, target_size_out);
4581 }
4582 }
4583 if (free_fm) {
4584 g_free(fm);
4585 }
4586 return ret;
4587 }
4588 #endif
4589
4590 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4591 int fd, int cmd, abi_long arg)
4592 {
4593 const argtype *arg_type = ie->arg_type;
4594 int target_size;
4595 void *argptr;
4596 int ret;
4597 struct ifconf *host_ifconf;
4598 uint32_t outbufsz;
4599 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4600 int target_ifreq_size;
4601 int nb_ifreq;
4602 int free_buf = 0;
4603 int i;
4604 int target_ifc_len;
4605 abi_long target_ifc_buf;
4606 int host_ifc_len;
4607 char *host_ifc_buf;
4608
4609 assert(arg_type[0] == TYPE_PTR);
4610 assert(ie->access == IOC_RW);
4611
4612 arg_type++;
4613 target_size = thunk_type_size(arg_type, 0);
4614
4615 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4616 if (!argptr)
4617 return -TARGET_EFAULT;
4618 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4619 unlock_user(argptr, arg, 0);
4620
4621 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4622 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4623 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
4624
4625 if (target_ifc_buf != 0) {
4626 target_ifc_len = host_ifconf->ifc_len;
4627 nb_ifreq = target_ifc_len / target_ifreq_size;
4628 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4629
4630 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4631 if (outbufsz > MAX_STRUCT_SIZE) {
4632 /*
4633 * We can't fit all the extents into the fixed size buffer.
4634 * Allocate one that is large enough and use it instead.
4635 */
4636 host_ifconf = malloc(outbufsz);
4637 if (!host_ifconf) {
4638 return -TARGET_ENOMEM;
4639 }
4640 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4641 free_buf = 1;
4642 }
4643 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4644
4645 host_ifconf->ifc_len = host_ifc_len;
4646 } else {
4647 host_ifc_buf = NULL;
4648 }
4649 host_ifconf->ifc_buf = host_ifc_buf;
4650
4651 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4652 if (!is_error(ret)) {
4653 /* convert host ifc_len to target ifc_len */
4654
4655 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4656 target_ifc_len = nb_ifreq * target_ifreq_size;
4657 host_ifconf->ifc_len = target_ifc_len;
4658
4659 /* restore target ifc_buf */
4660
4661 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4662
4663 /* copy struct ifconf to target user */
4664
4665 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4666 if (!argptr)
4667 return -TARGET_EFAULT;
4668 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4669 unlock_user(argptr, arg, target_size);
4670
4671 if (target_ifc_buf != 0) {
4672 /* copy ifreq[] to target user */
4673 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4674 for (i = 0; i < nb_ifreq ; i++) {
4675 thunk_convert(argptr + i * target_ifreq_size,
4676 host_ifc_buf + i * sizeof(struct ifreq),
4677 ifreq_arg_type, THUNK_TARGET);
4678 }
4679 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4680 }
4681 }
4682
4683 if (free_buf) {
4684 free(host_ifconf);
4685 }
4686
4687 return ret;
4688 }
4689
4690 #if defined(CONFIG_USBFS)
4691 #if HOST_LONG_BITS > 64
4692 #error USBDEVFS thunks do not support >64 bit hosts yet.
4693 #endif
4694 struct live_urb {
4695 uint64_t target_urb_adr;
4696 uint64_t target_buf_adr;
4697 char *target_buf_ptr;
4698 struct usbdevfs_urb host_urb;
4699 };
4700
4701 static GHashTable *usbdevfs_urb_hashtable(void)
4702 {
4703 static GHashTable *urb_hashtable;
4704
4705 if (!urb_hashtable) {
4706 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4707 }
4708 return urb_hashtable;
4709 }
4710
4711 static void urb_hashtable_insert(struct live_urb *urb)
4712 {
4713 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4714 g_hash_table_insert(urb_hashtable, urb, urb);
4715 }
4716
4717 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4718 {
4719 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4720 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
4721 }
4722
4723 static void urb_hashtable_remove(struct live_urb *urb)
4724 {
4725 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4726 g_hash_table_remove(urb_hashtable, urb);
4727 }
4728
4729 static abi_long
4730 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
4731 int fd, int cmd, abi_long arg)
4732 {
4733 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
4734 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
4735 struct live_urb *lurb;
4736 void *argptr;
4737 uint64_t hurb;
4738 int target_size;
4739 uintptr_t target_urb_adr;
4740 abi_long ret;
4741
4742 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
4743
4744 memset(buf_temp, 0, sizeof(uint64_t));
4745 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4746 if (is_error(ret)) {
4747 return ret;
4748 }
4749
4750 memcpy(&hurb, buf_temp, sizeof(uint64_t));
4751 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
4752 if (!lurb->target_urb_adr) {
4753 return -TARGET_EFAULT;
4754 }
4755 urb_hashtable_remove(lurb);
4756 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
4757 lurb->host_urb.buffer_length);
4758 lurb->target_buf_ptr = NULL;
4759
4760 /* restore the guest buffer pointer */
4761 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
4762
4763 /* update the guest urb struct */
4764 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
4765 if (!argptr) {
4766 g_free(lurb);
4767 return -TARGET_EFAULT;
4768 }
4769 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
4770 unlock_user(argptr, lurb->target_urb_adr, target_size);
4771
4772 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
4773 /* write back the urb handle */
4774 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4775 if (!argptr) {
4776 g_free(lurb);
4777 return -TARGET_EFAULT;
4778 }
4779
4780 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
4781 target_urb_adr = lurb->target_urb_adr;
4782 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
4783 unlock_user(argptr, arg, target_size);
4784
4785 g_free(lurb);
4786 return ret;
4787 }
4788
4789 static abi_long
4790 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
4791 uint8_t *buf_temp __attribute__((unused)),
4792 int fd, int cmd, abi_long arg)
4793 {
4794 struct live_urb *lurb;
4795
4796 /* map target address back to host URB with metadata. */
4797 lurb = urb_hashtable_lookup(arg);
4798 if (!lurb) {
4799 return -TARGET_EFAULT;
4800 }
4801 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4802 }
4803
4804 static abi_long
4805 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
4806 int fd, int cmd, abi_long arg)
4807 {
4808 const argtype *arg_type = ie->arg_type;
4809 int target_size;
4810 abi_long ret;
4811 void *argptr;
4812 int rw_dir;
4813 struct live_urb *lurb;
4814
4815 /*
4816 * each submitted URB needs to map to a unique ID for the
4817 * kernel, and that unique ID needs to be a pointer to
4818 * host memory. hence, we need to malloc for each URB.
4819 * isochronous transfers have a variable length struct.
4820 */
4821 arg_type++;
4822 target_size = thunk_type_size(arg_type, THUNK_TARGET);
4823
4824 /* construct host copy of urb and metadata */
4825 lurb = g_try_malloc0(sizeof(struct live_urb));
4826 if (!lurb) {
4827 return -TARGET_ENOMEM;
4828 }
4829
4830 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4831 if (!argptr) {
4832 g_free(lurb);
4833 return -TARGET_EFAULT;
4834 }
4835 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
4836 unlock_user(argptr, arg, 0);
4837
4838 lurb->target_urb_adr = arg;
4839 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
4840
4841 /* buffer space used depends on endpoint type so lock the entire buffer */
4842 /* control type urbs should check the buffer contents for true direction */
4843 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
4844 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
4845 lurb->host_urb.buffer_length, 1);
4846 if (lurb->target_buf_ptr == NULL) {
4847 g_free(lurb);
4848 return -TARGET_EFAULT;
4849 }
4850
4851 /* update buffer pointer in host copy */
4852 lurb->host_urb.buffer = lurb->target_buf_ptr;
4853
4854 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4855 if (is_error(ret)) {
4856 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
4857 g_free(lurb);
4858 } else {
4859 urb_hashtable_insert(lurb);
4860 }
4861
4862 return ret;
4863 }
4864 #endif /* CONFIG_USBFS */
4865
4866 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4867 int cmd, abi_long arg)
4868 {
4869 void *argptr;
4870 struct dm_ioctl *host_dm;
4871 abi_long guest_data;
4872 uint32_t guest_data_size;
4873 int target_size;
4874 const argtype *arg_type = ie->arg_type;
4875 abi_long ret;
4876 void *big_buf = NULL;
4877 char *host_data;
4878
4879 arg_type++;
4880 target_size = thunk_type_size(arg_type, 0);
4881 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4882 if (!argptr) {
4883 ret = -TARGET_EFAULT;
4884 goto out;
4885 }
4886 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4887 unlock_user(argptr, arg, 0);
4888
4889 /* buf_temp is too small, so fetch things into a bigger buffer */
4890 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
4891 memcpy(big_buf, buf_temp, target_size);
4892 buf_temp = big_buf;
4893 host_dm = big_buf;
4894
4895 guest_data = arg + host_dm->data_start;
4896 if ((guest_data - arg) < 0) {
4897 ret = -TARGET_EINVAL;
4898 goto out;
4899 }
4900 guest_data_size = host_dm->data_size - host_dm->data_start;
4901 host_data = (char*)host_dm + host_dm->data_start;
4902
4903 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
4904 if (!argptr) {
4905 ret = -TARGET_EFAULT;
4906 goto out;
4907 }
4908
4909 switch (ie->host_cmd) {
4910 case DM_REMOVE_ALL:
4911 case DM_LIST_DEVICES:
4912 case DM_DEV_CREATE:
4913 case DM_DEV_REMOVE:
4914 case DM_DEV_SUSPEND:
4915 case DM_DEV_STATUS:
4916 case DM_DEV_WAIT:
4917 case DM_TABLE_STATUS:
4918 case DM_TABLE_CLEAR:
4919 case DM_TABLE_DEPS:
4920 case DM_LIST_VERSIONS:
4921 /* no input data */
4922 break;
4923 case DM_DEV_RENAME:
4924 case DM_DEV_SET_GEOMETRY:
4925 /* data contains only strings */
4926 memcpy(host_data, argptr, guest_data_size);
4927 break;
4928 case DM_TARGET_MSG:
4929 memcpy(host_data, argptr, guest_data_size);
4930 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
4931 break;
4932 case DM_TABLE_LOAD:
4933 {
4934 void *gspec = argptr;
4935 void *cur_data = host_data;
4936 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
4937 int spec_size = thunk_type_size(arg_type, 0);
4938 int i;
4939
4940 for (i = 0; i < host_dm->target_count; i++) {
4941 struct dm_target_spec *spec = cur_data;
4942 uint32_t next;
4943 int slen;
4944
4945 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
4946 slen = strlen((char*)gspec + spec_size) + 1;
4947 next = spec->next;
4948 spec->next = sizeof(*spec) + slen;
4949 strcpy((char*)&spec[1], gspec + spec_size);
4950 gspec += next;
4951 cur_data += spec->next;
4952 }
4953 break;
4954 }
4955 default:
4956 ret = -TARGET_EINVAL;
4957 unlock_user(argptr, guest_data, 0);
4958 goto out;
4959 }
4960 unlock_user(argptr, guest_data, 0);
4961
4962 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4963 if (!is_error(ret)) {
4964 guest_data = arg + host_dm->data_start;
4965 guest_data_size = host_dm->data_size - host_dm->data_start;
4966 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
4967 switch (ie->host_cmd) {
4968 case DM_REMOVE_ALL:
4969 case DM_DEV_CREATE:
4970 case DM_DEV_REMOVE:
4971 case DM_DEV_RENAME:
4972 case DM_DEV_SUSPEND:
4973 case DM_DEV_STATUS:
4974 case DM_TABLE_LOAD:
4975 case DM_TABLE_CLEAR:
4976 case DM_TARGET_MSG:
4977 case DM_DEV_SET_GEOMETRY:
4978 /* no return data */
4979 break;
4980 case DM_LIST_DEVICES:
4981 {
4982 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
4983 uint32_t remaining_data = guest_data_size;
4984 void *cur_data = argptr;
4985 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
4986 int nl_size = 12; /* can't use thunk_size due to alignment */
4987
4988 while (1) {
4989 uint32_t next = nl->next;
4990 if (next) {
4991 nl->next = nl_size + (strlen(nl->name) + 1);
4992 }
4993 if (remaining_data < nl->next) {
4994 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4995 break;
4996 }
4997 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
4998 strcpy(cur_data + nl_size, nl->name);
4999 cur_data += nl->next;
5000 remaining_data -= nl->next;
5001 if (!next) {
5002 break;
5003 }
5004 nl = (void*)nl + next;
5005 }
5006 break;
5007 }
5008 case DM_DEV_WAIT:
5009 case DM_TABLE_STATUS:
5010 {
5011 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
5012 void *cur_data = argptr;
5013 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
5014 int spec_size = thunk_type_size(arg_type, 0);
5015 int i;
5016
5017 for (i = 0; i < host_dm->target_count; i++) {
5018 uint32_t next = spec->next;
5019 int slen = strlen((char*)&spec[1]) + 1;
5020 spec->next = (cur_data - argptr) + spec_size + slen;
5021 if (guest_data_size < spec->next) {
5022 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5023 break;
5024 }
5025 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
5026 strcpy(cur_data + spec_size, (char*)&spec[1]);
5027 cur_data = argptr + spec->next;
5028 spec = (void*)host_dm + host_dm->data_start + next;
5029 }
5030 break;
5031 }
5032 case DM_TABLE_DEPS:
5033 {
5034 void *hdata = (void*)host_dm + host_dm->data_start;
5035 int count = *(uint32_t*)hdata;
5036 uint64_t *hdev = hdata + 8;
5037 uint64_t *gdev = argptr + 8;
5038 int i;
5039
5040 *(uint32_t*)argptr = tswap32(count);
5041 for (i = 0; i < count; i++) {
5042 *gdev = tswap64(*hdev);
5043 gdev++;
5044 hdev++;
5045 }
5046 break;
5047 }
5048 case DM_LIST_VERSIONS:
5049 {
5050 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
5051 uint32_t remaining_data = guest_data_size;
5052 void *cur_data = argptr;
5053 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
5054 int vers_size = thunk_type_size(arg_type, 0);
5055
5056 while (1) {
5057 uint32_t next = vers->next;
5058 if (next) {
5059 vers->next = vers_size + (strlen(vers->name) + 1);
5060 }
5061 if (remaining_data < vers->next) {
5062 host_dm->flags |= DM_BUFFER_FULL_FLAG;
5063 break;
5064 }
5065 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
5066 strcpy(cur_data + vers_size, vers->name);
5067 cur_data += vers->next;
5068 remaining_data -= vers->next;
5069 if (!next) {
5070 break;
5071 }
5072 vers = (void*)vers + next;
5073 }
5074 break;
5075 }
5076 default:
5077 unlock_user(argptr, guest_data, 0);
5078 ret = -TARGET_EINVAL;
5079 goto out;
5080 }
5081 unlock_user(argptr, guest_data, guest_data_size);
5082
5083 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5084 if (!argptr) {
5085 ret = -TARGET_EFAULT;
5086 goto out;
5087 }
5088 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5089 unlock_user(argptr, arg, target_size);
5090 }
5091 out:
5092 g_free(big_buf);
5093 return ret;
5094 }
5095
5096 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
5097 int cmd, abi_long arg)
5098 {
5099 void *argptr;
5100 int target_size;
5101 const argtype *arg_type = ie->arg_type;
5102 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
5103 abi_long ret;
5104
5105 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
5106 struct blkpg_partition host_part;
5107
5108 /* Read and convert blkpg */
5109 arg_type++;
5110 target_size = thunk_type_size(arg_type, 0);
5111 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5112 if (!argptr) {
5113 ret = -TARGET_EFAULT;
5114 goto out;
5115 }
5116 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5117 unlock_user(argptr, arg, 0);
5118
5119 switch (host_blkpg->op) {
5120 case BLKPG_ADD_PARTITION:
5121 case BLKPG_DEL_PARTITION:
5122 /* payload is struct blkpg_partition */
5123 break;
5124 default:
5125 /* Unknown opcode */
5126 ret = -TARGET_EINVAL;
5127 goto out;
5128 }
5129
5130 /* Read and convert blkpg->data */
5131 arg = (abi_long)(uintptr_t)host_blkpg->data;
5132 target_size = thunk_type_size(part_arg_type, 0);
5133 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5134 if (!argptr) {
5135 ret = -TARGET_EFAULT;
5136 goto out;
5137 }
5138 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
5139 unlock_user(argptr, arg, 0);
5140
5141 /* Swizzle the data pointer to our local copy and call! */
5142 host_blkpg->data = &host_part;
5143 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
5144
5145 out:
5146 return ret;
5147 }
5148
5149 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
5150 int fd, int cmd, abi_long arg)
5151 {
5152 const argtype *arg_type = ie->arg_type;
5153 const StructEntry *se;
5154 const argtype *field_types;
5155 const int *dst_offsets, *src_offsets;
5156 int target_size;
5157 void *argptr;
5158 abi_ulong *target_rt_dev_ptr = NULL;
5159 unsigned long *host_rt_dev_ptr = NULL;
5160 abi_long ret;
5161 int i;
5162
5163 assert(ie->access == IOC_W);
5164 assert(*arg_type == TYPE_PTR);
5165 arg_type++;
5166 assert(*arg_type == TYPE_STRUCT);
5167 target_size = thunk_type_size(arg_type, 0);
5168 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5169 if (!argptr) {
5170 return -TARGET_EFAULT;
5171 }
5172 arg_type++;
5173 assert(*arg_type == (int)STRUCT_rtentry);
5174 se = struct_entries + *arg_type++;
5175 assert(se->convert[0] == NULL);
5176 /* convert struct here to be able to catch rt_dev string */
5177 field_types = se->field_types;
5178 dst_offsets = se->field_offsets[THUNK_HOST];
5179 src_offsets = se->field_offsets[THUNK_TARGET];
5180 for (i = 0; i < se->nb_fields; i++) {
5181 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
5182 assert(*field_types == TYPE_PTRVOID);
5183 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
5184 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
5185 if (*target_rt_dev_ptr != 0) {
5186 *host_rt_dev_ptr = (unsigned long)lock_user_string(
5187 tswapal(*target_rt_dev_ptr));
5188 if (!*host_rt_dev_ptr) {
5189 unlock_user(argptr, arg, 0);
5190 return -TARGET_EFAULT;
5191 }
5192 } else {
5193 *host_rt_dev_ptr = 0;
5194 }
5195 field_types++;
5196 continue;
5197 }
5198 field_types = thunk_convert(buf_temp + dst_offsets[i],
5199 argptr + src_offsets[i],
5200 field_types, THUNK_HOST);
5201 }
5202 unlock_user(argptr, arg, 0);
5203
5204 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5205
5206 assert(host_rt_dev_ptr != NULL);
5207 assert(target_rt_dev_ptr != NULL);
5208 if (*host_rt_dev_ptr != 0) {
5209 unlock_user((void *)*host_rt_dev_ptr,
5210 *target_rt_dev_ptr, 0);
5211 }
5212 return ret;
5213 }
5214
5215 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
5216 int fd, int cmd, abi_long arg)
5217 {
5218 int sig = target_to_host_signal(arg);
5219 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
5220 }
5221
5222 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
5223 int fd, int cmd, abi_long arg)
5224 {
5225 struct timeval tv;
5226 abi_long ret;
5227
5228 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
5229 if (is_error(ret)) {
5230 return ret;
5231 }
5232
5233 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
5234 if (copy_to_user_timeval(arg, &tv)) {
5235 return -TARGET_EFAULT;
5236 }
5237 } else {
5238 if (copy_to_user_timeval64(arg, &tv)) {
5239 return -TARGET_EFAULT;
5240 }
5241 }
5242
5243 return ret;
5244 }
5245
5246 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
5247 int fd, int cmd, abi_long arg)
5248 {
5249 struct timespec ts;
5250 abi_long ret;
5251
5252 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
5253 if (is_error(ret)) {
5254 return ret;
5255 }
5256
5257 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5258 if (host_to_target_timespec(arg, &ts)) {
5259 return -TARGET_EFAULT;
5260 }
5261 } else{
5262 if (host_to_target_timespec64(arg, &ts)) {
5263 return -TARGET_EFAULT;
5264 }
5265 }
5266
5267 return ret;
5268 }
5269
5270 #ifdef TIOCGPTPEER
5271 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5272 int fd, int cmd, abi_long arg)
5273 {
5274 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5275 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5276 }
5277 #endif
5278
5279 static IOCTLEntry ioctl_entries[] = {
5280 #define IOCTL(cmd, access, ...) \
5281 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5282 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5283 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5284 #define IOCTL_IGNORE(cmd) \
5285 { TARGET_ ## cmd, 0, #cmd },
5286 #include "ioctls.h"
5287 { 0, 0, },
5288 };
5289
5290 /* ??? Implement proper locking for ioctls. */
5291 /* do_ioctl() Must return target values and target errnos. */
5292 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5293 {
5294 const IOCTLEntry *ie;
5295 const argtype *arg_type;
5296 abi_long ret;
5297 uint8_t buf_temp[MAX_STRUCT_SIZE];
5298 int target_size;
5299 void *argptr;
5300
5301 ie = ioctl_entries;
5302 for(;;) {
5303 if (ie->target_cmd == 0) {
5304 qemu_log_mask(
5305 LOG_UNIMP, "Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5306 return -TARGET_ENOSYS;
5307 }
5308 if (ie->target_cmd == cmd)
5309 break;
5310 ie++;
5311 }
5312 arg_type = ie->arg_type;
5313 if (ie->do_ioctl) {
5314 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5315 } else if (!ie->host_cmd) {
5316 /* Some architectures define BSD ioctls in their headers
5317 that are not implemented in Linux. */
5318 return -TARGET_ENOSYS;
5319 }
5320
5321 switch(arg_type[0]) {
5322 case TYPE_NULL:
5323 /* no argument */
5324 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5325 break;
5326 case TYPE_PTRVOID:
5327 case TYPE_INT:
5328 case TYPE_LONG:
5329 case TYPE_ULONG:
5330 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5331 break;
5332 case TYPE_PTR:
5333 arg_type++;
5334 target_size = thunk_type_size(arg_type, 0);
5335 switch(ie->access) {
5336 case IOC_R:
5337 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5338 if (!is_error(ret)) {
5339 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5340 if (!argptr)
5341 return -TARGET_EFAULT;
5342 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5343 unlock_user(argptr, arg, target_size);
5344 }
5345 break;
5346 case IOC_W:
5347 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5348 if (!argptr)
5349 return -TARGET_EFAULT;
5350 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5351 unlock_user(argptr, arg, 0);
5352 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5353 break;
5354 default:
5355 case IOC_RW:
5356 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5357 if (!argptr)
5358 return -TARGET_EFAULT;
5359 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5360 unlock_user(argptr, arg, 0);
5361 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5362 if (!is_error(ret)) {
5363 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5364 if (!argptr)
5365 return -TARGET_EFAULT;
5366 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5367 unlock_user(argptr, arg, target_size);
5368 }
5369 break;
5370 }
5371 break;
5372 default:
5373 qemu_log_mask(LOG_UNIMP,
5374 "Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5375 (long)cmd, arg_type[0]);
5376 ret = -TARGET_ENOSYS;
5377 break;
5378 }
5379 return ret;
5380 }
5381
5382 static const bitmask_transtbl iflag_tbl[] = {
5383 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5384 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5385 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5386 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5387 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5388 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5389 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5390 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5391 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5392 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5393 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5394 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5395 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5396 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5397 { 0, 0, 0, 0 }
5398 };
5399
5400 static const bitmask_transtbl oflag_tbl[] = {
5401 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5402 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5403 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5404 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5405 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5406 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5407 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5408 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5409 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5410 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5411 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5412 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5413 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5414 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5415 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5416 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5417 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5418 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5419 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5420 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5421 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5422 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5423 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5424 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5425 { 0, 0, 0, 0 }
5426 };
5427
5428 static const bitmask_transtbl cflag_tbl[] = {
5429 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5430 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5431 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5432 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5433 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5434 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5435 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5436 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5437 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5438 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5439 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5440 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5441 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5442 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5443 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5444 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5445 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5446 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5447 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5448 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5449 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5450 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5451 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5452 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5453 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5454 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5455 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5456 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5457 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5458 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5459 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5460 { 0, 0, 0, 0 }
5461 };
5462
5463 static const bitmask_transtbl lflag_tbl[] = {
5464 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5465 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5466 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5467 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5468 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5469 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5470 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5471 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5472 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5473 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5474 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5475 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5476 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5477 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5478 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5479 { 0, 0, 0, 0 }
5480 };
5481
5482 static void target_to_host_termios (void *dst, const void *src)
5483 {
5484 struct host_termios *host = dst;
5485 const struct target_termios *target = src;
5486
5487 host->c_iflag =
5488 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5489 host->c_oflag =
5490 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5491 host->c_cflag =
5492 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5493 host->c_lflag =
5494 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5495 host->c_line = target->c_line;
5496
5497 memset(host->c_cc, 0, sizeof(host->c_cc));
5498 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5499 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5500 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5501 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5502 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5503 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5504 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5505 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5506 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5507 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5508 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5509 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5510 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5511 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5512 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5513 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5514 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5515 }
5516
5517 static void host_to_target_termios (void *dst, const void *src)
5518 {
5519 struct target_termios *target = dst;
5520 const struct host_termios *host = src;
5521
5522 target->c_iflag =
5523 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5524 target->c_oflag =
5525 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5526 target->c_cflag =
5527 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5528 target->c_lflag =
5529 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5530 target->c_line = host->c_line;
5531
5532 memset(target->c_cc, 0, sizeof(target->c_cc));
5533 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5534 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5535 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5536 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5537 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5538 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5539 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5540 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5541 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5542 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5543 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5544 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5545 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5546 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5547 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5548 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5549 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5550 }
5551
5552 static const StructEntry struct_termios_def = {
5553 .convert = { host_to_target_termios, target_to_host_termios },
5554 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5555 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5556 };
5557
5558 static bitmask_transtbl mmap_flags_tbl[] = {
5559 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5560 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5561 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5562 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5563 MAP_ANONYMOUS, MAP_ANONYMOUS },
5564 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5565 MAP_GROWSDOWN, MAP_GROWSDOWN },
5566 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5567 MAP_DENYWRITE, MAP_DENYWRITE },
5568 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5569 MAP_EXECUTABLE, MAP_EXECUTABLE },
5570 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5571 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
5572 MAP_NORESERVE, MAP_NORESERVE },
5573 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
5574 /* MAP_STACK had been ignored by the kernel for quite some time.
5575 Recognize it for the target insofar as we do not want to pass
5576 it through to the host. */
5577 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
5578 { 0, 0, 0, 0 }
5579 };
5580
5581 /*
5582 * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
5583 * TARGET_I386 is defined if TARGET_X86_64 is defined
5584 */
5585 #if defined(TARGET_I386)
5586
5587 /* NOTE: there is really one LDT for all the threads */
5588 static uint8_t *ldt_table;
5589
5590 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5591 {
5592 int size;
5593 void *p;
5594
5595 if (!ldt_table)
5596 return 0;
5597 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5598 if (size > bytecount)
5599 size = bytecount;
5600 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5601 if (!p)
5602 return -TARGET_EFAULT;
5603 /* ??? Should this by byteswapped? */
5604 memcpy(p, ldt_table, size);
5605 unlock_user(p, ptr, size);
5606 return size;
5607 }
5608
5609 /* XXX: add locking support */
5610 static abi_long write_ldt(CPUX86State *env,
5611 abi_ulong ptr, unsigned long bytecount, int oldmode)
5612 {
5613 struct target_modify_ldt_ldt_s ldt_info;
5614 struct target_modify_ldt_ldt_s *target_ldt_info;
5615 int seg_32bit, contents, read_exec_only, limit_in_pages;
5616 int seg_not_present, useable, lm;
5617 uint32_t *lp, entry_1, entry_2;
5618
5619 if (bytecount != sizeof(ldt_info))
5620 return -TARGET_EINVAL;
5621 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5622 return -TARGET_EFAULT;
5623 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5624 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5625 ldt_info.limit = tswap32(target_ldt_info->limit);
5626 ldt_info.flags = tswap32(target_ldt_info->flags);
5627 unlock_user_struct(target_ldt_info, ptr, 0);
5628
5629 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5630 return -TARGET_EINVAL;
5631 seg_32bit = ldt_info.flags & 1;
5632 contents = (ldt_info.flags >> 1) & 3;
5633 read_exec_only = (ldt_info.flags >> 3) & 1;
5634 limit_in_pages = (ldt_info.flags >> 4) & 1;
5635 seg_not_present = (ldt_info.flags >> 5) & 1;
5636 useable = (ldt_info.flags >> 6) & 1;
5637 #ifdef TARGET_ABI32
5638 lm = 0;
5639 #else
5640 lm = (ldt_info.flags >> 7) & 1;
5641 #endif
5642 if (contents == 3) {
5643 if (oldmode)
5644 return -TARGET_EINVAL;
5645 if (seg_not_present == 0)
5646 return -TARGET_EINVAL;
5647 }
5648 /* allocate the LDT */
5649 if (!ldt_table) {
5650 env->ldt.base = target_mmap(0,
5651 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
5652 PROT_READ|PROT_WRITE,
5653 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
5654 if (env->ldt.base == -1)
5655 return -TARGET_ENOMEM;
5656 memset(g2h(env->ldt.base), 0,
5657 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
5658 env->ldt.limit = 0xffff;
5659 ldt_table = g2h(env->ldt.base);
5660 }
5661
5662 /* NOTE: same code as Linux kernel */
5663 /* Allow LDTs to be cleared by the user. */
5664 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5665 if (oldmode ||
5666 (contents == 0 &&
5667 read_exec_only == 1 &&
5668 seg_32bit == 0 &&
5669 limit_in_pages == 0 &&
5670 seg_not_present == 1 &&
5671 useable == 0 )) {
5672 entry_1 = 0;
5673 entry_2 = 0;
5674 goto install;
5675 }
5676 }
5677
5678 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5679 (ldt_info.limit & 0x0ffff);
5680 entry_2 = (ldt_info.base_addr & 0xff000000) |
5681 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5682 (ldt_info.limit & 0xf0000) |
5683 ((read_exec_only ^ 1) << 9) |
5684 (contents << 10) |
5685 ((seg_not_present ^ 1) << 15) |
5686 (seg_32bit << 22) |
5687 (limit_in_pages << 23) |
5688 (lm << 21) |
5689 0x7000;
5690 if (!oldmode)
5691 entry_2 |= (useable << 20);
5692
5693 /* Install the new entry ... */
5694 install:
5695 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
5696 lp[0] = tswap32(entry_1);
5697 lp[1] = tswap32(entry_2);
5698 return 0;
5699 }
5700
5701 /* specific and weird i386 syscalls */
5702 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
5703 unsigned long bytecount)
5704 {
5705 abi_long ret;
5706
5707 switch (func) {
5708 case 0:
5709 ret = read_ldt(ptr, bytecount);
5710 break;
5711 case 1:
5712 ret = write_ldt(env, ptr, bytecount, 1);
5713 break;
5714 case 0x11:
5715 ret = write_ldt(env, ptr, bytecount, 0);
5716 break;
5717 default:
5718 ret = -TARGET_ENOSYS;
5719 break;
5720 }
5721 return ret;
5722 }
5723
5724 #if defined(TARGET_ABI32)
5725 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
5726 {
5727 uint64_t *gdt_table = g2h(env->gdt.base);
5728 struct target_modify_ldt_ldt_s ldt_info;
5729 struct target_modify_ldt_ldt_s *target_ldt_info;
5730 int seg_32bit, contents, read_exec_only, limit_in_pages;
5731 int seg_not_present, useable, lm;
5732 uint32_t *lp, entry_1, entry_2;
5733 int i;
5734
5735 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5736 if (!target_ldt_info)
5737 return -TARGET_EFAULT;
5738 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5739 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5740 ldt_info.limit = tswap32(target_ldt_info->limit);
5741 ldt_info.flags = tswap32(target_ldt_info->flags);
5742 if (ldt_info.entry_number == -1) {
5743 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
5744 if (gdt_table[i] == 0) {
5745 ldt_info.entry_number = i;
5746 target_ldt_info->entry_number = tswap32(i);
5747 break;
5748 }
5749 }
5750 }
5751 unlock_user_struct(target_ldt_info, ptr, 1);
5752
5753 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
5754 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
5755 return -TARGET_EINVAL;
5756 seg_32bit = ldt_info.flags & 1;
5757 contents = (ldt_info.flags >> 1) & 3;
5758 read_exec_only = (ldt_info.flags >> 3) & 1;
5759 limit_in_pages = (ldt_info.flags >> 4) & 1;
5760 seg_not_present = (ldt_info.flags >> 5) & 1;
5761 useable = (ldt_info.flags >> 6) & 1;
5762 #ifdef TARGET_ABI32
5763 lm = 0;
5764 #else
5765 lm = (ldt_info.flags >> 7) & 1;
5766 #endif
5767
5768 if (contents == 3) {
5769 if (seg_not_present == 0)
5770 return -TARGET_EINVAL;
5771 }
5772
5773 /* NOTE: same code as Linux kernel */
5774 /* Allow LDTs to be cleared by the user. */
5775 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5776 if ((contents == 0 &&
5777 read_exec_only == 1 &&
5778 seg_32bit == 0 &&
5779 limit_in_pages == 0 &&
5780 seg_not_present == 1 &&
5781 useable == 0 )) {
5782 entry_1 = 0;
5783 entry_2 = 0;
5784 goto install;
5785 }
5786 }
5787
5788 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5789 (ldt_info.limit & 0x0ffff);
5790 entry_2 = (ldt_info.base_addr & 0xff000000) |
5791 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5792 (ldt_info.limit & 0xf0000) |
5793 ((read_exec_only ^ 1) << 9) |
5794 (contents << 10) |
5795 ((seg_not_present ^ 1) << 15) |
5796 (seg_32bit << 22) |
5797 (limit_in_pages << 23) |
5798 (useable << 20) |
5799 (lm << 21) |
5800 0x7000;
5801
5802 /* Install the new entry ... */
5803 install:
5804 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
5805 lp[0] = tswap32(entry_1);
5806 lp[1] = tswap32(entry_2);
5807 return 0;
5808 }
5809
5810 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
5811 {
5812 struct target_modify_ldt_ldt_s *target_ldt_info;
5813 uint64_t *gdt_table = g2h(env->gdt.base);
5814 uint32_t base_addr, limit, flags;
5815 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
5816 int seg_not_present, useable, lm;
5817 uint32_t *lp, entry_1, entry_2;
5818
5819 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5820 if (!target_ldt_info)
5821 return -TARGET_EFAULT;
5822 idx = tswap32(target_ldt_info->entry_number);
5823 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
5824 idx > TARGET_GDT_ENTRY_TLS_MAX) {
5825 unlock_user_struct(target_ldt_info, ptr, 1);
5826 return -TARGET_EINVAL;
5827 }
5828 lp = (uint32_t *)(gdt_table + idx);
5829 entry_1 = tswap32(lp[0]);
5830 entry_2 = tswap32(lp[1]);
5831
5832 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
5833 contents = (entry_2 >> 10) & 3;
5834 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
5835 seg_32bit = (entry_2 >> 22) & 1;
5836 limit_in_pages = (entry_2 >> 23) & 1;
5837 useable = (entry_2 >> 20) & 1;
5838 #ifdef TARGET_ABI32
5839 lm = 0;
5840 #else
5841 lm = (entry_2 >> 21) & 1;
5842 #endif
5843 flags = (seg_32bit << 0) | (contents << 1) |
5844 (read_exec_only << 3) | (limit_in_pages << 4) |
5845 (seg_not_present << 5) | (useable << 6) | (lm << 7);
5846 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
5847 base_addr = (entry_1 >> 16) |
5848 (entry_2 & 0xff000000) |
5849 ((entry_2 & 0xff) << 16);
5850 target_ldt_info->base_addr = tswapal(base_addr);
5851 target_ldt_info->limit = tswap32(limit);
5852 target_ldt_info->flags = tswap32(flags);
5853 unlock_user_struct(target_ldt_info, ptr, 1);
5854 return 0;
5855 }
5856
5857 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
5858 {
5859 return -ENOSYS;
5860 }
5861 #else
5862 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
5863 {
5864 abi_long ret = 0;
5865 abi_ulong val;
5866 int idx;
5867
5868 switch(code) {
5869 case TARGET_ARCH_SET_GS:
5870 case TARGET_ARCH_SET_FS:
5871 if (code == TARGET_ARCH_SET_GS)
5872 idx = R_GS;
5873 else
5874 idx = R_FS;
5875 cpu_x86_load_seg(env, idx, 0);
5876 env->segs[idx].base = addr;
5877 break;
5878 case TARGET_ARCH_GET_GS:
5879 case TARGET_ARCH_GET_FS:
5880 if (code == TARGET_ARCH_GET_GS)
5881 idx = R_GS;
5882 else
5883 idx = R_FS;
5884 val = env->segs[idx].base;
5885 if (put_user(val, addr, abi_ulong))
5886 ret = -TARGET_EFAULT;
5887 break;
5888 default:
5889 ret = -TARGET_EINVAL;
5890 break;
5891 }
5892 return ret;
5893 }
5894 #endif /* defined(TARGET_ABI32 */
5895
5896 #endif /* defined(TARGET_I386) */
5897
5898 #define NEW_STACK_SIZE 0x40000
5899
5900
5901 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
5902 typedef struct {
5903 CPUArchState *env;
5904 pthread_mutex_t mutex;
5905 pthread_cond_t cond;
5906 pthread_t thread;
5907 uint32_t tid;
5908 abi_ulong child_tidptr;
5909 abi_ulong parent_tidptr;
5910 sigset_t sigmask;
5911 } new_thread_info;
5912
5913 static void *clone_func(void *arg)
5914 {
5915 new_thread_info *info = arg;
5916 CPUArchState *env;
5917 CPUState *cpu;
5918 TaskState *ts;
5919
5920 rcu_register_thread();
5921 tcg_register_thread();
5922 env = info->env;
5923 cpu = env_cpu(env);
5924 thread_cpu = cpu;
5925 ts = (TaskState *)cpu->opaque;
5926 info->tid = sys_gettid();
5927 task_settid(ts);
5928 if (info->child_tidptr)
5929 put_user_u32(info->tid, info->child_tidptr);
5930 if (info->parent_tidptr)
5931 put_user_u32(info->tid, info->parent_tidptr);
5932 qemu_guest_random_seed_thread_part2(cpu->random_seed);
5933 /* Enable signals. */
5934 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
5935 /* Signal to the parent that we're ready. */
5936 pthread_mutex_lock(&info->mutex);
5937 pthread_cond_broadcast(&info->cond);
5938 pthread_mutex_unlock(&info->mutex);
5939 /* Wait until the parent has finished initializing the tls state. */
5940 pthread_mutex_lock(&clone_lock);
5941 pthread_mutex_unlock(&clone_lock);
5942 cpu_loop(env);
5943 /* never exits */
5944 return NULL;
5945 }
5946
5947 /* do_fork() Must return host values and target errnos (unlike most
5948 do_*() functions). */
5949 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
5950 abi_ulong parent_tidptr, target_ulong newtls,
5951 abi_ulong child_tidptr)
5952 {
5953 CPUState *cpu = env_cpu(env);
5954 int ret;
5955 TaskState *ts;
5956 CPUState *new_cpu;
5957 CPUArchState *new_env;
5958 sigset_t sigmask;
5959
5960 flags &= ~CLONE_IGNORED_FLAGS;
5961
5962 /* Emulate vfork() with fork() */
5963 if (flags & CLONE_VFORK)
5964 flags &= ~(CLONE_VFORK | CLONE_VM);
5965
5966 if (flags & CLONE_VM) {
5967 TaskState *parent_ts = (TaskState *)cpu->opaque;
5968 new_thread_info info;
5969 pthread_attr_t attr;
5970
5971 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
5972 (flags & CLONE_INVALID_THREAD_FLAGS)) {
5973 return -TARGET_EINVAL;
5974 }
5975
5976 ts = g_new0(TaskState, 1);
5977 init_task_state(ts);
5978
5979 /* Grab a mutex so that thread setup appears atomic. */
5980 pthread_mutex_lock(&clone_lock);
5981
5982 /* we create a new CPU instance. */
5983 new_env = cpu_copy(env);
5984 /* Init regs that differ from the parent. */
5985 cpu_clone_regs_child(new_env, newsp, flags);
5986 cpu_clone_regs_parent(env, flags);
5987 new_cpu = env_cpu(new_env);
5988 new_cpu->opaque = ts;
5989 ts->bprm = parent_ts->bprm;
5990 ts->info = parent_ts->info;
5991 ts->signal_mask = parent_ts->signal_mask;
5992
5993 if (flags & CLONE_CHILD_CLEARTID) {
5994 ts->child_tidptr = child_tidptr;
5995 }
5996
5997 if (flags & CLONE_SETTLS) {
5998 cpu_set_tls (new_env, newtls);
5999 }
6000
6001 memset(&info, 0, sizeof(info));
6002 pthread_mutex_init(&info.mutex, NULL);
6003 pthread_mutex_lock(&info.mutex);
6004 pthread_cond_init(&info.cond, NULL);
6005 info.env = new_env;
6006 if (flags & CLONE_CHILD_SETTID) {
6007 info.child_tidptr = child_tidptr;
6008 }
6009 if (flags & CLONE_PARENT_SETTID) {
6010 info.parent_tidptr = parent_tidptr;
6011 }
6012
6013 ret = pthread_attr_init(&attr);
6014 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
6015 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
6016 /* It is not safe to deliver signals until the child has finished
6017 initializing, so temporarily block all signals. */
6018 sigfillset(&sigmask);
6019 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
6020 cpu->random_seed = qemu_guest_random_seed_thread_part1();
6021
6022 /* If this is our first additional thread, we need to ensure we
6023 * generate code for parallel execution and flush old translations.
6024 */
6025 if (!parallel_cpus) {
6026 parallel_cpus = true;
6027 tb_flush(cpu);
6028 }
6029
6030 ret = pthread_create(&info.thread, &attr, clone_func, &info);
6031 /* TODO: Free new CPU state if thread creation failed. */
6032
6033 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
6034 pthread_attr_destroy(&attr);
6035 if (ret == 0) {
6036 /* Wait for the child to initialize. */
6037 pthread_cond_wait(&info.cond, &info.mutex);
6038 ret = info.tid;
6039 } else {
6040 ret = -1;
6041 }
6042 pthread_mutex_unlock(&info.mutex);
6043 pthread_cond_destroy(&info.cond);
6044 pthread_mutex_destroy(&info.mutex);
6045 pthread_mutex_unlock(&clone_lock);
6046 } else {
6047 /* if no CLONE_VM, we consider it is a fork */
6048 if (flags & CLONE_INVALID_FORK_FLAGS) {
6049 return -TARGET_EINVAL;
6050 }
6051
6052 /* We can't support custom termination signals */
6053 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
6054 return -TARGET_EINVAL;
6055 }
6056
6057 if (block_signals()) {
6058 return -TARGET_ERESTARTSYS;
6059 }
6060
6061 fork_start();
6062 ret = fork();
6063 if (ret == 0) {
6064 /* Child Process. */
6065 cpu_clone_regs_child(env, newsp, flags);
6066 fork_end(1);
6067 /* There is a race condition here. The parent process could
6068 theoretically read the TID in the child process before the child
6069 tid is set. This would require using either ptrace
6070 (not implemented) or having *_tidptr to point at a shared memory
6071 mapping. We can't repeat the spinlock hack used above because
6072 the child process gets its own copy of the lock. */
6073 if (flags & CLONE_CHILD_SETTID)
6074 put_user_u32(sys_gettid(), child_tidptr);
6075 if (flags & CLONE_PARENT_SETTID)
6076 put_user_u32(sys_gettid(), parent_tidptr);
6077 ts = (TaskState *)cpu->opaque;
6078 if (flags & CLONE_SETTLS)
6079 cpu_set_tls (env, newtls);
6080 if (flags & CLONE_CHILD_CLEARTID)
6081 ts->child_tidptr = child_tidptr;
6082 } else {
6083 cpu_clone_regs_parent(env, flags);
6084 fork_end(0);
6085 }
6086 }
6087 return ret;
6088 }
6089
6090 /* warning : doesn't handle linux specific flags... */
6091 static int target_to_host_fcntl_cmd(int cmd)
6092 {
6093 int ret;
6094
6095 switch(cmd) {
6096 case TARGET_F_DUPFD:
6097 case TARGET_F_GETFD:
6098 case TARGET_F_SETFD:
6099 case TARGET_F_GETFL:
6100 case TARGET_F_SETFL:
6101 ret = cmd;
6102 break;
6103 case TARGET_F_GETLK:
6104 ret = F_GETLK64;
6105 break;
6106 case TARGET_F_SETLK:
6107 ret = F_SETLK64;
6108 break;
6109 case TARGET_F_SETLKW:
6110 ret = F_SETLKW64;
6111 break;
6112 case TARGET_F_GETOWN:
6113 ret = F_GETOWN;
6114 break;
6115 case TARGET_F_SETOWN:
6116 ret = F_SETOWN;
6117 break;
6118 case TARGET_F_GETSIG:
6119 ret = F_GETSIG;
6120 break;
6121 case TARGET_F_SETSIG:
6122 ret = F_SETSIG;
6123 break;
6124 #if TARGET_ABI_BITS == 32
6125 case TARGET_F_GETLK64:
6126 ret = F_GETLK64;
6127 break;
6128 case TARGET_F_SETLK64:
6129 ret = F_SETLK64;
6130 break;
6131 case TARGET_F_SETLKW64:
6132 ret = F_SETLKW64;
6133 break;
6134 #endif
6135 case TARGET_F_SETLEASE:
6136 ret = F_SETLEASE;
6137 break;
6138 case TARGET_F_GETLEASE:
6139 ret = F_GETLEASE;
6140 break;
6141 #ifdef F_DUPFD_CLOEXEC
6142 case TARGET_F_DUPFD_CLOEXEC:
6143 ret = F_DUPFD_CLOEXEC;
6144 break;
6145 #endif
6146 case TARGET_F_NOTIFY:
6147 ret = F_NOTIFY;
6148 break;
6149 #ifdef F_GETOWN_EX
6150 case TARGET_F_GETOWN_EX:
6151 ret = F_GETOWN_EX;
6152 break;
6153 #endif
6154 #ifdef F_SETOWN_EX
6155 case TARGET_F_SETOWN_EX:
6156 ret = F_SETOWN_EX;
6157 break;
6158 #endif
6159 #ifdef F_SETPIPE_SZ
6160 case TARGET_F_SETPIPE_SZ:
6161 ret = F_SETPIPE_SZ;
6162 break;
6163 case TARGET_F_GETPIPE_SZ:
6164 ret = F_GETPIPE_SZ;
6165 break;
6166 #endif
6167 default:
6168 ret = -TARGET_EINVAL;
6169 break;
6170 }
6171
6172 #if defined(__powerpc64__)
6173 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
6174 * is not supported by kernel. The glibc fcntl call actually adjusts
6175 * them to 5, 6 and 7 before making the syscall(). Since we make the
6176 * syscall directly, adjust to what is supported by the kernel.
6177 */
6178 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
6179 ret -= F_GETLK64 - 5;
6180 }
6181 #endif
6182
6183 return ret;
6184 }
6185
6186 #define FLOCK_TRANSTBL \
6187 switch (type) { \
6188 TRANSTBL_CONVERT(F_RDLCK); \
6189 TRANSTBL_CONVERT(F_WRLCK); \
6190 TRANSTBL_CONVERT(F_UNLCK); \
6191 TRANSTBL_CONVERT(F_EXLCK); \
6192 TRANSTBL_CONVERT(F_SHLCK); \
6193 }
6194
6195 static int target_to_host_flock(int type)
6196 {
6197 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
6198 FLOCK_TRANSTBL
6199 #undef TRANSTBL_CONVERT
6200 return -TARGET_EINVAL;
6201 }
6202
6203 static int host_to_target_flock(int type)
6204 {
6205 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
6206 FLOCK_TRANSTBL
6207 #undef TRANSTBL_CONVERT
6208 /* if we don't know how to convert the value coming
6209 * from the host we copy to the target field as-is
6210 */
6211 return type;
6212 }
6213
6214 static inline abi_long copy_from_user_flock(struct flock64 *fl,
6215 abi_ulong target_flock_addr)
6216 {
6217 struct target_flock *target_fl;
6218 int l_type;
6219
6220 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6221 return -TARGET_EFAULT;
6222 }
6223
6224 __get_user(l_type, &target_fl->l_type);
6225 l_type = target_to_host_flock(l_type);
6226 if (l_type < 0) {
6227 return l_type;
6228 }
6229 fl->l_type = l_type;
6230 __get_user(fl->l_whence, &target_fl->l_whence);
6231 __get_user(fl->l_start, &target_fl->l_start);
6232 __get_user(fl->l_len, &target_fl->l_len);
6233 __get_user(fl->l_pid, &target_fl->l_pid);
6234 unlock_user_struct(target_fl, target_flock_addr, 0);
6235 return 0;
6236 }
6237
6238 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
6239 const struct flock64 *fl)
6240 {
6241 struct target_flock *target_fl;
6242 short l_type;
6243
6244 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6245 return -TARGET_EFAULT;
6246 }
6247
6248 l_type = host_to_target_flock(fl->l_type);
6249 __put_user(l_type, &target_fl->l_type);
6250 __put_user(fl->l_whence, &target_fl->l_whence);
6251 __put_user(fl->l_start, &target_fl->l_start);
6252 __put_user(fl->l_len, &target_fl->l_len);
6253 __put_user(fl->l_pid, &target_fl->l_pid);
6254 unlock_user_struct(target_fl, target_flock_addr, 1);
6255 return 0;
6256 }
6257
6258 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
6259 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
6260
6261 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
6262 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
6263 abi_ulong target_flock_addr)
6264 {
6265 struct target_oabi_flock64 *target_fl;
6266 int l_type;
6267
6268 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6269 return -TARGET_EFAULT;
6270 }
6271
6272 __get_user(l_type, &target_fl->l_type);
6273 l_type = target_to_host_flock(l_type);
6274 if (l_type < 0) {
6275 return l_type;
6276 }
6277 fl->l_type = l_type;
6278 __get_user(fl->l_whence, &target_fl->l_whence);
6279 __get_user(fl->l_start, &target_fl->l_start);
6280 __get_user(fl->l_len, &target_fl->l_len);
6281 __get_user(fl->l_pid, &target_fl->l_pid);
6282 unlock_user_struct(target_fl, target_flock_addr, 0);
6283 return 0;
6284 }
6285
6286 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
6287 const struct flock64 *fl)
6288 {
6289 struct target_oabi_flock64 *target_fl;
6290 short l_type;
6291
6292 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6293 return -TARGET_EFAULT;
6294 }
6295
6296 l_type = host_to_target_flock(fl->l_type);
6297 __put_user(l_type, &target_fl->l_type);
6298 __put_user(fl->l_whence, &target_fl->l_whence);
6299 __put_user(fl->l_start, &target_fl->l_start);
6300 __put_user(fl->l_len, &target_fl->l_len);
6301 __put_user(fl->l_pid, &target_fl->l_pid);
6302 unlock_user_struct(target_fl, target_flock_addr, 1);
6303 return 0;
6304 }
6305 #endif
6306
6307 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6308 abi_ulong target_flock_addr)
6309 {
6310 struct target_flock64 *target_fl;
6311 int l_type;
6312
6313 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6314 return -TARGET_EFAULT;
6315 }
6316
6317 __get_user(l_type, &target_fl->l_type);
6318 l_type = target_to_host_flock(l_type);
6319 if (l_type < 0) {
6320 return l_type;
6321 }
6322 fl->l_type = l_type;
6323 __get_user(fl->l_whence, &target_fl->l_whence);
6324 __get_user(fl->l_start, &target_fl->l_start);
6325 __get_user(fl->l_len, &target_fl->l_len);
6326 __get_user(fl->l_pid, &target_fl->l_pid);
6327 unlock_user_struct(target_fl, target_flock_addr, 0);
6328 return 0;
6329 }
6330
6331 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6332 const struct flock64 *fl)
6333 {
6334 struct target_flock64 *target_fl;
6335 short l_type;
6336
6337 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6338 return -TARGET_EFAULT;
6339 }
6340
6341 l_type = host_to_target_flock(fl->l_type);
6342 __put_user(l_type, &target_fl->l_type);
6343 __put_user(fl->l_whence, &target_fl->l_whence);
6344 __put_user(fl->l_start, &target_fl->l_start);
6345 __put_user(fl->l_len, &target_fl->l_len);
6346 __put_user(fl->l_pid, &target_fl->l_pid);
6347 unlock_user_struct(target_fl, target_flock_addr, 1);
6348 return 0;
6349 }
6350
6351 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6352 {
6353 struct flock64 fl64;
6354 #ifdef F_GETOWN_EX
6355 struct f_owner_ex fox;
6356 struct target_f_owner_ex *target_fox;
6357 #endif
6358 abi_long ret;
6359 int host_cmd = target_to_host_fcntl_cmd(cmd);
6360
6361 if (host_cmd == -TARGET_EINVAL)
6362 return host_cmd;
6363
6364 switch(cmd) {
6365 case TARGET_F_GETLK:
6366 ret = copy_from_user_flock(&fl64, arg);
6367 if (ret) {
6368 return ret;
6369 }
6370 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6371 if (ret == 0) {
6372 ret = copy_to_user_flock(arg, &fl64);
6373 }
6374 break;
6375
6376 case TARGET_F_SETLK:
6377 case TARGET_F_SETLKW:
6378 ret = copy_from_user_flock(&fl64, arg);
6379 if (ret) {
6380 return ret;
6381 }
6382 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6383 break;
6384
6385 case TARGET_F_GETLK64:
6386 ret = copy_from_user_flock64(&fl64, arg);
6387 if (ret) {
6388 return ret;
6389 }
6390 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6391 if (ret == 0) {
6392 ret = copy_to_user_flock64(arg, &fl64);
6393 }
6394 break;
6395 case TARGET_F_SETLK64:
6396 case TARGET_F_SETLKW64:
6397 ret = copy_from_user_flock64(&fl64, arg);
6398 if (ret) {
6399 return ret;
6400 }
6401 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6402 break;
6403
6404 case TARGET_F_GETFL:
6405 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6406 if (ret >= 0) {
6407 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
6408 }
6409 break;
6410
6411 case TARGET_F_SETFL:
6412 ret = get_errno(safe_fcntl(fd, host_cmd,
6413 target_to_host_bitmask(arg,
6414 fcntl_flags_tbl)));
6415 break;
6416
6417 #ifdef F_GETOWN_EX
6418 case TARGET_F_GETOWN_EX:
6419 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6420 if (ret >= 0) {
6421 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
6422 return -TARGET_EFAULT;
6423 target_fox->type = tswap32(fox.type);
6424 target_fox->pid = tswap32(fox.pid);
6425 unlock_user_struct(target_fox, arg, 1);
6426 }
6427 break;
6428 #endif
6429
6430 #ifdef F_SETOWN_EX
6431 case TARGET_F_SETOWN_EX:
6432 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
6433 return -TARGET_EFAULT;
6434 fox.type = tswap32(target_fox->type);
6435 fox.pid = tswap32(target_fox->pid);
6436 unlock_user_struct(target_fox, arg, 0);
6437 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6438 break;
6439 #endif
6440
6441 case TARGET_F_SETOWN:
6442 case TARGET_F_GETOWN:
6443 case TARGET_F_SETSIG:
6444 case TARGET_F_GETSIG:
6445 case TARGET_F_SETLEASE:
6446 case TARGET_F_GETLEASE:
6447 case TARGET_F_SETPIPE_SZ:
6448 case TARGET_F_GETPIPE_SZ:
6449 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6450 break;
6451
6452 default:
6453 ret = get_errno(safe_fcntl(fd, cmd, arg));
6454 break;
6455 }
6456 return ret;
6457 }
6458
6459 #ifdef USE_UID16
6460
6461 static inline int high2lowuid(int uid)
6462 {
6463 if (uid > 65535)
6464 return 65534;
6465 else
6466 return uid;
6467 }
6468
6469 static inline int high2lowgid(int gid)
6470 {
6471 if (gid > 65535)
6472 return 65534;
6473 else
6474 return gid;
6475 }
6476
6477 static inline int low2highuid(int uid)
6478 {
6479 if ((int16_t)uid == -1)
6480 return -1;
6481 else
6482 return uid;
6483 }
6484
6485 static inline int low2highgid(int gid)
6486 {
6487 if ((int16_t)gid == -1)
6488 return -1;
6489 else
6490 return gid;
6491 }
6492 static inline int tswapid(int id)
6493 {
6494 return tswap16(id);
6495 }
6496
6497 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6498
6499 #else /* !USE_UID16 */
6500 static inline int high2lowuid(int uid)
6501 {
6502 return uid;
6503 }
6504 static inline int high2lowgid(int gid)
6505 {
6506 return gid;
6507 }
6508 static inline int low2highuid(int uid)
6509 {
6510 return uid;
6511 }
6512 static inline int low2highgid(int gid)
6513 {
6514 return gid;
6515 }
6516 static inline int tswapid(int id)
6517 {
6518 return tswap32(id);
6519 }
6520
6521 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6522
6523 #endif /* USE_UID16 */
6524
6525 /* We must do direct syscalls for setting UID/GID, because we want to
6526 * implement the Linux system call semantics of "change only for this thread",
6527 * not the libc/POSIX semantics of "change for all threads in process".
6528 * (See http://ewontfix.com/17/ for more details.)
6529 * We use the 32-bit version of the syscalls if present; if it is not
6530 * then either the host architecture supports 32-bit UIDs natively with
6531 * the standard syscall, or the 16-bit UID is the best we can do.
6532 */
6533 #ifdef __NR_setuid32
6534 #define __NR_sys_setuid __NR_setuid32
6535 #else
6536 #define __NR_sys_setuid __NR_setuid
6537 #endif
6538 #ifdef __NR_setgid32
6539 #define __NR_sys_setgid __NR_setgid32
6540 #else
6541 #define __NR_sys_setgid __NR_setgid
6542 #endif
6543 #ifdef __NR_setresuid32
6544 #define __NR_sys_setresuid __NR_setresuid32
6545 #else
6546 #define __NR_sys_setresuid __NR_setresuid
6547 #endif
6548 #ifdef __NR_setresgid32
6549 #define __NR_sys_setresgid __NR_setresgid32
6550 #else
6551 #define __NR_sys_setresgid __NR_setresgid
6552 #endif
6553
6554 _syscall1(int, sys_setuid, uid_t, uid)
6555 _syscall1(int, sys_setgid, gid_t, gid)
6556 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6557 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
6558
6559 void syscall_init(void)
6560 {
6561 IOCTLEntry *ie;
6562 const argtype *arg_type;
6563 int size;
6564 int i;
6565
6566 thunk_init(STRUCT_MAX);
6567
6568 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
6569 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
6570 #include "syscall_types.h"
6571 #undef STRUCT
6572 #undef STRUCT_SPECIAL
6573
6574 /* Build target_to_host_errno_table[] table from
6575 * host_to_target_errno_table[]. */
6576 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
6577 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
6578 }
6579
6580 /* we patch the ioctl size if necessary. We rely on the fact that
6581 no ioctl has all the bits at '1' in the size field */
6582 ie = ioctl_entries;
6583 while (ie->target_cmd != 0) {
6584 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
6585 TARGET_IOC_SIZEMASK) {
6586 arg_type = ie->arg_type;
6587 if (arg_type[0] != TYPE_PTR) {
6588 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
6589 ie->target_cmd);
6590 exit(1);
6591 }
6592 arg_type++;
6593 size = thunk_type_size(arg_type, 0);
6594 ie->target_cmd = (ie->target_cmd &
6595 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
6596 (size << TARGET_IOC_SIZESHIFT);
6597 }
6598
6599 /* automatic consistency check if same arch */
6600 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
6601 (defined(__x86_64__) && defined(TARGET_X86_64))
6602 if (unlikely(ie->target_cmd != ie->host_cmd)) {
6603 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
6604 ie->name, ie->target_cmd, ie->host_cmd);
6605 }
6606 #endif
6607 ie++;
6608 }
6609 }
6610
6611 #if TARGET_ABI_BITS == 32
6612 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
6613 {
6614 #ifdef TARGET_WORDS_BIGENDIAN
6615 return ((uint64_t)word0 << 32) | word1;
6616 #else
6617 return ((uint64_t)word1 << 32) | word0;
6618 #endif
6619 }
6620 #else /* TARGET_ABI_BITS == 32 */
6621 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
6622 {
6623 return word0;
6624 }
6625 #endif /* TARGET_ABI_BITS != 32 */
6626
6627 #ifdef TARGET_NR_truncate64
6628 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
6629 abi_long arg2,
6630 abi_long arg3,
6631 abi_long arg4)
6632 {
6633 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
6634 arg2 = arg3;
6635 arg3 = arg4;
6636 }
6637 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
6638 }
6639 #endif
6640
6641 #ifdef TARGET_NR_ftruncate64
6642 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
6643 abi_long arg2,
6644 abi_long arg3,
6645 abi_long arg4)
6646 {
6647 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
6648 arg2 = arg3;
6649 arg3 = arg4;
6650 }
6651 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
6652 }
6653 #endif
6654
6655 #if defined(TARGET_NR_timer_settime) || \
6656 (defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD))
6657 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec,
6658 abi_ulong target_addr)
6659 {
6660 struct target_itimerspec *target_itspec;
6661
6662 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) {
6663 return -TARGET_EFAULT;
6664 }
6665
6666 host_itspec->it_interval.tv_sec =
6667 tswapal(target_itspec->it_interval.tv_sec);
6668 host_itspec->it_interval.tv_nsec =
6669 tswapal(target_itspec->it_interval.tv_nsec);
6670 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec);
6671 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec);
6672
6673 unlock_user_struct(target_itspec, target_addr, 1);
6674 return 0;
6675 }
6676 #endif
6677
6678 #if ((defined(TARGET_NR_timerfd_gettime) || \
6679 defined(TARGET_NR_timerfd_settime)) && defined(CONFIG_TIMERFD)) || \
6680 defined(TARGET_NR_timer_gettime) || defined(TARGET_NR_timer_settime)
6681 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
6682 struct itimerspec *host_its)
6683 {
6684 struct target_itimerspec *target_itspec;
6685
6686 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) {
6687 return -TARGET_EFAULT;
6688 }
6689
6690 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec);
6691 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec);
6692
6693 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec);
6694 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec);
6695
6696 unlock_user_struct(target_itspec, target_addr, 0);
6697 return 0;
6698 }
6699 #endif
6700
6701 #if defined(TARGET_NR_adjtimex) || \
6702 (defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME))
6703 static inline abi_long target_to_host_timex(struct timex *host_tx,
6704 abi_long target_addr)
6705 {
6706 struct target_timex *target_tx;
6707
6708 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
6709 return -TARGET_EFAULT;
6710 }
6711
6712 __get_user(host_tx->modes, &target_tx->modes);
6713 __get_user(host_tx->offset, &target_tx->offset);
6714 __get_user(host_tx->freq, &target_tx->freq);
6715 __get_user(host_tx->maxerror, &target_tx->maxerror);
6716 __get_user(host_tx->esterror, &target_tx->esterror);
6717 __get_user(host_tx->status, &target_tx->status);
6718 __get_user(host_tx->constant, &target_tx->constant);
6719 __get_user(host_tx->precision, &target_tx->precision);
6720 __get_user(host_tx->tolerance, &target_tx->tolerance);
6721 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6722 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6723 __get_user(host_tx->tick, &target_tx->tick);
6724 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6725 __get_user(host_tx->jitter, &target_tx->jitter);
6726 __get_user(host_tx->shift, &target_tx->shift);
6727 __get_user(host_tx->stabil, &target_tx->stabil);
6728 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
6729 __get_user(host_tx->calcnt, &target_tx->calcnt);
6730 __get_user(host_tx->errcnt, &target_tx->errcnt);
6731 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
6732 __get_user(host_tx->tai, &target_tx->tai);
6733
6734 unlock_user_struct(target_tx, target_addr, 0);
6735 return 0;
6736 }
6737
6738 static inline abi_long host_to_target_timex(abi_long target_addr,
6739 struct timex *host_tx)
6740 {
6741 struct target_timex *target_tx;
6742
6743 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
6744 return -TARGET_EFAULT;
6745 }
6746
6747 __put_user(host_tx->modes, &target_tx->modes);
6748 __put_user(host_tx->offset, &target_tx->offset);
6749 __put_user(host_tx->freq, &target_tx->freq);
6750 __put_user(host_tx->maxerror, &target_tx->maxerror);
6751 __put_user(host_tx->esterror, &target_tx->esterror);
6752 __put_user(host_tx->status, &target_tx->status);
6753 __put_user(host_tx->constant, &target_tx->constant);
6754 __put_user(host_tx->precision, &target_tx->precision);
6755 __put_user(host_tx->tolerance, &target_tx->tolerance);
6756 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6757 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6758 __put_user(host_tx->tick, &target_tx->tick);
6759 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6760 __put_user(host_tx->jitter, &target_tx->jitter);
6761 __put_user(host_tx->shift, &target_tx->shift);
6762 __put_user(host_tx->stabil, &target_tx->stabil);
6763 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
6764 __put_user(host_tx->calcnt, &target_tx->calcnt);
6765 __put_user(host_tx->errcnt, &target_tx->errcnt);
6766 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
6767 __put_user(host_tx->tai, &target_tx->tai);
6768
6769 unlock_user_struct(target_tx, target_addr, 1);
6770 return 0;
6771 }
6772 #endif
6773
6774 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
6775 abi_ulong target_addr)
6776 {
6777 struct target_sigevent *target_sevp;
6778
6779 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
6780 return -TARGET_EFAULT;
6781 }
6782
6783 /* This union is awkward on 64 bit systems because it has a 32 bit
6784 * integer and a pointer in it; we follow the conversion approach
6785 * used for handling sigval types in signal.c so the guest should get
6786 * the correct value back even if we did a 64 bit byteswap and it's
6787 * using the 32 bit integer.
6788 */
6789 host_sevp->sigev_value.sival_ptr =
6790 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
6791 host_sevp->sigev_signo =
6792 target_to_host_signal(tswap32(target_sevp->sigev_signo));
6793 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
6794 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
6795
6796 unlock_user_struct(target_sevp, target_addr, 1);
6797 return 0;
6798 }
6799
6800 #if defined(TARGET_NR_mlockall)
6801 static inline int target_to_host_mlockall_arg(int arg)
6802 {
6803 int result = 0;
6804
6805 if (arg & TARGET_MLOCKALL_MCL_CURRENT) {
6806 result |= MCL_CURRENT;
6807 }
6808 if (arg & TARGET_MLOCKALL_MCL_FUTURE) {
6809 result |= MCL_FUTURE;
6810 }
6811 return result;
6812 }
6813 #endif
6814
6815 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
6816 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
6817 defined(TARGET_NR_newfstatat))
6818 static inline abi_long host_to_target_stat64(void *cpu_env,
6819 abi_ulong target_addr,
6820 struct stat *host_st)
6821 {
6822 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
6823 if (((CPUARMState *)cpu_env)->eabi) {
6824 struct target_eabi_stat64 *target_st;
6825
6826 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6827 return -TARGET_EFAULT;
6828 memset(target_st, 0, sizeof(struct target_eabi_stat64));
6829 __put_user(host_st->st_dev, &target_st->st_dev);
6830 __put_user(host_st->st_ino, &target_st->st_ino);
6831 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6832 __put_user(host_st->st_ino, &target_st->__st_ino);
6833 #endif
6834 __put_user(host_st->st_mode, &target_st->st_mode);
6835 __put_user(host_st->st_nlink, &target_st->st_nlink);
6836 __put_user(host_st->st_uid, &target_st->st_uid);
6837 __put_user(host_st->st_gid, &target_st->st_gid);
6838 __put_user(host_st->st_rdev, &target_st->st_rdev);
6839 __put_user(host_st->st_size, &target_st->st_size);
6840 __put_user(host_st->st_blksize, &target_st->st_blksize);
6841 __put_user(host_st->st_blocks, &target_st->st_blocks);
6842 __put_user(host_st->st_atime, &target_st->target_st_atime);
6843 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6844 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6845 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
6846 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
6847 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
6848 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
6849 #endif
6850 unlock_user_struct(target_st, target_addr, 1);
6851 } else
6852 #endif
6853 {
6854 #if defined(TARGET_HAS_STRUCT_STAT64)
6855 struct target_stat64 *target_st;
6856 #else
6857 struct target_stat *target_st;
6858 #endif
6859
6860 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6861 return -TARGET_EFAULT;
6862 memset(target_st, 0, sizeof(*target_st));
6863 __put_user(host_st->st_dev, &target_st->st_dev);
6864 __put_user(host_st->st_ino, &target_st->st_ino);
6865 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6866 __put_user(host_st->st_ino, &target_st->__st_ino);
6867 #endif
6868 __put_user(host_st->st_mode, &target_st->st_mode);
6869 __put_user(host_st->st_nlink, &target_st->st_nlink);
6870 __put_user(host_st->st_uid, &target_st->st_uid);
6871 __put_user(host_st->st_gid, &target_st->st_gid);
6872 __put_user(host_st->st_rdev, &target_st->st_rdev);
6873 /* XXX: better use of kernel struct */
6874 __put_user(host_st->st_size, &target_st->st_size);
6875 __put_user(host_st->st_blksize, &target_st->st_blksize);
6876 __put_user(host_st->st_blocks, &target_st->st_blocks);
6877 __put_user(host_st->st_atime, &target_st->target_st_atime);
6878 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6879 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6880 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
6881 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
6882 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
6883 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
6884 #endif
6885 unlock_user_struct(target_st, target_addr, 1);
6886 }
6887
6888 return 0;
6889 }
6890 #endif
6891
6892 #if defined(TARGET_NR_statx) && defined(__NR_statx)
6893 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
6894 abi_ulong target_addr)
6895 {
6896 struct target_statx *target_stx;
6897
6898 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
6899 return -TARGET_EFAULT;
6900 }
6901 memset(target_stx, 0, sizeof(*target_stx));
6902
6903 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
6904 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
6905 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
6906 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
6907 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
6908 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
6909 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
6910 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
6911 __put_user(host_stx->stx_size, &target_stx->stx_size);
6912 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
6913 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
6914 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
6915 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
6916 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_btime.tv_sec);
6917 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_btime.tv_nsec);
6918 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_ctime.tv_sec);
6919 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_ctime.tv_nsec);
6920 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_mtime.tv_sec);
6921 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_mtime.tv_nsec);
6922 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
6923 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
6924 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
6925 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
6926
6927 unlock_user_struct(target_stx, target_addr, 1);
6928
6929 return 0;
6930 }
6931 #endif
6932
6933 static int do_sys_futex(int *uaddr, int op, int val,
6934 const struct timespec *timeout, int *uaddr2,
6935 int val3)
6936 {
6937 #if HOST_LONG_BITS == 64
6938 #if defined(__NR_futex)
6939 /* always a 64-bit time_t, it doesn't define _time64 version */
6940 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
6941
6942 #endif
6943 #else /* HOST_LONG_BITS == 64 */
6944 #if defined(__NR_futex_time64)
6945 if (sizeof(timeout->tv_sec) == 8) {
6946 /* _time64 function on 32bit arch */
6947 return sys_futex_time64(uaddr, op, val, timeout, uaddr2, val3);
6948 }
6949 #endif
6950 #if defined(__NR_futex)
6951 /* old function on 32bit arch */
6952 return sys_futex(uaddr, op, val, timeout, uaddr2, val3);
6953 #endif
6954 #endif /* HOST_LONG_BITS == 64 */
6955 g_assert_not_reached();
6956 }
6957
6958 static int do_safe_futex(int *uaddr, int op, int val,
6959 const struct timespec *timeout, int *uaddr2,
6960 int val3)
6961 {
6962 #if HOST_LONG_BITS == 64
6963 #if defined(__NR_futex)
6964 /* always a 64-bit time_t, it doesn't define _time64 version */
6965 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
6966 #endif
6967 #else /* HOST_LONG_BITS == 64 */
6968 #if defined(__NR_futex_time64)
6969 if (sizeof(timeout->tv_sec) == 8) {
6970 /* _time64 function on 32bit arch */
6971 return get_errno(safe_futex_time64(uaddr, op, val, timeout, uaddr2,
6972 val3));
6973 }
6974 #endif
6975 #if defined(__NR_futex)
6976 /* old function on 32bit arch */
6977 return get_errno(safe_futex(uaddr, op, val, timeout, uaddr2, val3));
6978 #endif
6979 #endif /* HOST_LONG_BITS == 64 */
6980 return -TARGET_ENOSYS;
6981 }
6982
6983 /* ??? Using host futex calls even when target atomic operations
6984 are not really atomic probably breaks things. However implementing
6985 futexes locally would make futexes shared between multiple processes
6986 tricky. However they're probably useless because guest atomic
6987 operations won't work either. */
6988 #if defined(TARGET_NR_futex)
6989 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
6990 target_ulong uaddr2, int val3)
6991 {
6992 struct timespec ts, *pts;
6993 int base_op;
6994
6995 /* ??? We assume FUTEX_* constants are the same on both host
6996 and target. */
6997 #ifdef FUTEX_CMD_MASK
6998 base_op = op & FUTEX_CMD_MASK;
6999 #else
7000 base_op = op;
7001 #endif
7002 switch (base_op) {
7003 case FUTEX_WAIT:
7004 case FUTEX_WAIT_BITSET:
7005 if (timeout) {
7006 pts = &ts;
7007 target_to_host_timespec(pts, timeout);
7008 } else {
7009 pts = NULL;
7010 }
7011 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3);
7012 case FUTEX_WAKE:
7013 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7014 case FUTEX_FD:
7015 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7016 case FUTEX_REQUEUE:
7017 case FUTEX_CMP_REQUEUE:
7018 case FUTEX_WAKE_OP:
7019 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7020 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7021 But the prototype takes a `struct timespec *'; insert casts
7022 to satisfy the compiler. We do not need to tswap TIMEOUT
7023 since it's not compared to guest memory. */
7024 pts = (struct timespec *)(uintptr_t) timeout;
7025 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2),
7026 (base_op == FUTEX_CMP_REQUEUE
7027 ? tswap32(val3)
7028 : val3));
7029 default:
7030 return -TARGET_ENOSYS;
7031 }
7032 }
7033 #endif
7034
7035 #if defined(TARGET_NR_futex_time64)
7036 static int do_futex_time64(target_ulong uaddr, int op, int val, target_ulong timeout,
7037 target_ulong uaddr2, int val3)
7038 {
7039 struct timespec ts, *pts;
7040 int base_op;
7041
7042 /* ??? We assume FUTEX_* constants are the same on both host
7043 and target. */
7044 #ifdef FUTEX_CMD_MASK
7045 base_op = op & FUTEX_CMD_MASK;
7046 #else
7047 base_op = op;
7048 #endif
7049 switch (base_op) {
7050 case FUTEX_WAIT:
7051 case FUTEX_WAIT_BITSET:
7052 if (timeout) {
7053 pts = &ts;
7054 target_to_host_timespec64(pts, timeout);
7055 } else {
7056 pts = NULL;
7057 }
7058 return do_safe_futex(g2h(uaddr), op, tswap32(val), pts, NULL, val3);
7059 case FUTEX_WAKE:
7060 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7061 case FUTEX_FD:
7062 return do_safe_futex(g2h(uaddr), op, val, NULL, NULL, 0);
7063 case FUTEX_REQUEUE:
7064 case FUTEX_CMP_REQUEUE:
7065 case FUTEX_WAKE_OP:
7066 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
7067 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
7068 But the prototype takes a `struct timespec *'; insert casts
7069 to satisfy the compiler. We do not need to tswap TIMEOUT
7070 since it's not compared to guest memory. */
7071 pts = (struct timespec *)(uintptr_t) timeout;
7072 return do_safe_futex(g2h(uaddr), op, val, pts, g2h(uaddr2),
7073 (base_op == FUTEX_CMP_REQUEUE
7074 ? tswap32(val3)
7075 : val3));
7076 default:
7077 return -TARGET_ENOSYS;
7078 }
7079 }
7080 #endif
7081
7082 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7083 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
7084 abi_long handle, abi_long mount_id,
7085 abi_long flags)
7086 {
7087 struct file_handle *target_fh;
7088 struct file_handle *fh;
7089 int mid = 0;
7090 abi_long ret;
7091 char *name;
7092 unsigned int size, total_size;
7093
7094 if (get_user_s32(size, handle)) {
7095 return -TARGET_EFAULT;
7096 }
7097
7098 name = lock_user_string(pathname);
7099 if (!name) {
7100 return -TARGET_EFAULT;
7101 }
7102
7103 total_size = sizeof(struct file_handle) + size;
7104 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
7105 if (!target_fh) {
7106 unlock_user(name, pathname, 0);
7107 return -TARGET_EFAULT;
7108 }
7109
7110 fh = g_malloc0(total_size);
7111 fh->handle_bytes = size;
7112
7113 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
7114 unlock_user(name, pathname, 0);
7115
7116 /* man name_to_handle_at(2):
7117 * Other than the use of the handle_bytes field, the caller should treat
7118 * the file_handle structure as an opaque data type
7119 */
7120
7121 memcpy(target_fh, fh, total_size);
7122 target_fh->handle_bytes = tswap32(fh->handle_bytes);
7123 target_fh->handle_type = tswap32(fh->handle_type);
7124 g_free(fh);
7125 unlock_user(target_fh, handle, total_size);
7126
7127 if (put_user_s32(mid, mount_id)) {
7128 return -TARGET_EFAULT;
7129 }
7130
7131 return ret;
7132
7133 }
7134 #endif
7135
7136 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7137 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
7138 abi_long flags)
7139 {
7140 struct file_handle *target_fh;
7141 struct file_handle *fh;
7142 unsigned int size, total_size;
7143 abi_long ret;
7144
7145 if (get_user_s32(size, handle)) {
7146 return -TARGET_EFAULT;
7147 }
7148
7149 total_size = sizeof(struct file_handle) + size;
7150 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
7151 if (!target_fh) {
7152 return -TARGET_EFAULT;
7153 }
7154
7155 fh = g_memdup(target_fh, total_size);
7156 fh->handle_bytes = size;
7157 fh->handle_type = tswap32(target_fh->handle_type);
7158
7159 ret = get_errno(open_by_handle_at(mount_fd, fh,
7160 target_to_host_bitmask(flags, fcntl_flags_tbl)));
7161
7162 g_free(fh);
7163
7164 unlock_user(target_fh, handle, total_size);
7165
7166 return ret;
7167 }
7168 #endif
7169
7170 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
7171
7172 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
7173 {
7174 int host_flags;
7175 target_sigset_t *target_mask;
7176 sigset_t host_mask;
7177 abi_long ret;
7178
7179 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
7180 return -TARGET_EINVAL;
7181 }
7182 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
7183 return -TARGET_EFAULT;
7184 }
7185
7186 target_to_host_sigset(&host_mask, target_mask);
7187
7188 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
7189
7190 ret = get_errno(signalfd(fd, &host_mask, host_flags));
7191 if (ret >= 0) {
7192 fd_trans_register(ret, &target_signalfd_trans);
7193 }
7194
7195 unlock_user_struct(target_mask, mask, 0);
7196
7197 return ret;
7198 }
7199 #endif
7200
7201 /* Map host to target signal numbers for the wait family of syscalls.
7202 Assume all other status bits are the same. */
7203 int host_to_target_waitstatus(int status)
7204 {
7205 if (WIFSIGNALED(status)) {
7206 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
7207 }
7208 if (WIFSTOPPED(status)) {
7209 return (host_to_target_signal(WSTOPSIG(status)) << 8)
7210 | (status & 0xff);
7211 }
7212 return status;
7213 }
7214
7215 static int open_self_cmdline(void *cpu_env, int fd)
7216 {
7217 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7218 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
7219 int i;
7220
7221 for (i = 0; i < bprm->argc; i++) {
7222 size_t len = strlen(bprm->argv[i]) + 1;
7223
7224 if (write(fd, bprm->argv[i], len) != len) {
7225 return -1;
7226 }
7227 }
7228
7229 return 0;
7230 }
7231
7232 static int open_self_maps(void *cpu_env, int fd)
7233 {
7234 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7235 TaskState *ts = cpu->opaque;
7236 GSList *map_info = read_self_maps();
7237 GSList *s;
7238 int count;
7239
7240 for (s = map_info; s; s = g_slist_next(s)) {
7241 MapInfo *e = (MapInfo *) s->data;
7242
7243 if (h2g_valid(e->start)) {
7244 unsigned long min = e->start;
7245 unsigned long max = e->end;
7246 int flags = page_get_flags(h2g(min));
7247 const char *path;
7248
7249 max = h2g_valid(max - 1) ?
7250 max : (uintptr_t) g2h(GUEST_ADDR_MAX) + 1;
7251
7252 if (page_check_range(h2g(min), max - min, flags) == -1) {
7253 continue;
7254 }
7255
7256 if (h2g(min) == ts->info->stack_limit) {
7257 path = "[stack]";
7258 } else {
7259 path = e->path;
7260 }
7261
7262 count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
7263 " %c%c%c%c %08" PRIx64 " %s %"PRId64,
7264 h2g(min), h2g(max - 1) + 1,
7265 e->is_read ? 'r' : '-',
7266 e->is_write ? 'w' : '-',
7267 e->is_exec ? 'x' : '-',
7268 e->is_priv ? 'p' : '-',
7269 (uint64_t) e->offset, e->dev, e->inode);
7270 if (path) {
7271 dprintf(fd, "%*s%s\n", 73 - count, "", path);
7272 } else {
7273 dprintf(fd, "\n");
7274 }
7275 }
7276 }
7277
7278 free_self_maps(map_info);
7279
7280 #ifdef TARGET_VSYSCALL_PAGE
7281 /*
7282 * We only support execution from the vsyscall page.
7283 * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
7284 */
7285 count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
7286 " --xp 00000000 00:00 0",
7287 TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
7288 dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
7289 #endif
7290
7291 return 0;
7292 }
7293
7294 static int open_self_stat(void *cpu_env, int fd)
7295 {
7296 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7297 TaskState *ts = cpu->opaque;
7298 g_autoptr(GString) buf = g_string_new(NULL);
7299 int i;
7300
7301 for (i = 0; i < 44; i++) {
7302 if (i == 0) {
7303 /* pid */
7304 g_string_printf(buf, FMT_pid " ", getpid());
7305 } else if (i == 1) {
7306 /* app name */
7307 gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
7308 bin = bin ? bin + 1 : ts->bprm->argv[0];
7309 g_string_printf(buf, "(%.15s) ", bin);
7310 } else if (i == 27) {
7311 /* stack bottom */
7312 g_string_printf(buf, TARGET_ABI_FMT_ld " ", ts->info->start_stack);
7313 } else {
7314 /* for the rest, there is MasterCard */
7315 g_string_printf(buf, "0%c", i == 43 ? '\n' : ' ');
7316 }
7317
7318 if (write(fd, buf->str, buf->len) != buf->len) {
7319 return -1;
7320 }
7321 }
7322
7323 return 0;
7324 }
7325
7326 static int open_self_auxv(void *cpu_env, int fd)
7327 {
7328 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
7329 TaskState *ts = cpu->opaque;
7330 abi_ulong auxv = ts->info->saved_auxv;
7331 abi_ulong len = ts->info->auxv_len;
7332 char *ptr;
7333
7334 /*
7335 * Auxiliary vector is stored in target process stack.
7336 * read in whole auxv vector and copy it to file
7337 */
7338 ptr = lock_user(VERIFY_READ, auxv, len, 0);
7339 if (ptr != NULL) {
7340 while (len > 0) {
7341 ssize_t r;
7342 r = write(fd, ptr, len);
7343 if (r <= 0) {
7344 break;
7345 }
7346 len -= r;
7347 ptr += r;
7348 }
7349 lseek(fd, 0, SEEK_SET);
7350 unlock_user(ptr, auxv, len);
7351 }
7352
7353 return 0;
7354 }
7355
7356 static int is_proc_myself(const char *filename, const char *entry)
7357 {
7358 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
7359 filename += strlen("/proc/");
7360 if (!strncmp(filename, "self/", strlen("self/"))) {
7361 filename += strlen("self/");
7362 } else if (*filename >= '1' && *filename <= '9') {
7363 char myself[80];
7364 snprintf(myself, sizeof(myself), "%d/", getpid());
7365 if (!strncmp(filename, myself, strlen(myself))) {
7366 filename += strlen(myself);
7367 } else {
7368 return 0;
7369 }
7370 } else {
7371 return 0;
7372 }
7373 if (!strcmp(filename, entry)) {
7374 return 1;
7375 }
7376 }
7377 return 0;
7378 }
7379
7380 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
7381 defined(TARGET_SPARC) || defined(TARGET_M68K)
7382 static int is_proc(const char *filename, const char *entry)
7383 {
7384 return strcmp(filename, entry) == 0;
7385 }
7386 #endif
7387
7388 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7389 static int open_net_route(void *cpu_env, int fd)
7390 {
7391 FILE *fp;
7392 char *line = NULL;
7393 size_t len = 0;
7394 ssize_t read;
7395
7396 fp = fopen("/proc/net/route", "r");
7397 if (fp == NULL) {
7398 return -1;
7399 }
7400
7401 /* read header */
7402
7403 read = getline(&line, &len, fp);
7404 dprintf(fd, "%s", line);
7405
7406 /* read routes */
7407
7408 while ((read = getline(&line, &len, fp)) != -1) {
7409 char iface[16];
7410 uint32_t dest, gw, mask;
7411 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
7412 int fields;
7413
7414 fields = sscanf(line,
7415 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7416 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
7417 &mask, &mtu, &window, &irtt);
7418 if (fields != 11) {
7419 continue;
7420 }
7421 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7422 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
7423 metric, tswap32(mask), mtu, window, irtt);
7424 }
7425
7426 free(line);
7427 fclose(fp);
7428
7429 return 0;
7430 }
7431 #endif
7432
7433 #if defined(TARGET_SPARC)
7434 static int open_cpuinfo(void *cpu_env, int fd)
7435 {
7436 dprintf(fd, "type\t\t: sun4u\n");
7437 return 0;
7438 }
7439 #endif
7440
7441 #if defined(TARGET_M68K)
7442 static int open_hardware(void *cpu_env, int fd)
7443 {
7444 dprintf(fd, "Model:\t\tqemu-m68k\n");
7445 return 0;
7446 }
7447 #endif
7448
7449 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
7450 {
7451 struct fake_open {
7452 const char *filename;
7453 int (*fill)(void *cpu_env, int fd);
7454 int (*cmp)(const char *s1, const char *s2);
7455 };
7456 const struct fake_open *fake_open;
7457 static const struct fake_open fakes[] = {
7458 { "maps", open_self_maps, is_proc_myself },
7459 { "stat", open_self_stat, is_proc_myself },
7460 { "auxv", open_self_auxv, is_proc_myself },
7461 { "cmdline", open_self_cmdline, is_proc_myself },
7462 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7463 { "/proc/net/route", open_net_route, is_proc },
7464 #endif
7465 #if defined(TARGET_SPARC)
7466 { "/proc/cpuinfo", open_cpuinfo, is_proc },
7467 #endif
7468 #if defined(TARGET_M68K)
7469 { "/proc/hardware", open_hardware, is_proc },
7470 #endif
7471 { NULL, NULL, NULL }
7472 };
7473
7474 if (is_proc_myself(pathname, "exe")) {
7475 int execfd = qemu_getauxval(AT_EXECFD);
7476 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
7477 }
7478
7479 for (fake_open = fakes; fake_open->filename; fake_open++) {
7480 if (fake_open->cmp(pathname, fake_open->filename)) {
7481 break;
7482 }
7483 }
7484
7485 if (fake_open->filename) {
7486 const char *tmpdir;
7487 char filename[PATH_MAX];
7488 int fd, r;
7489
7490 /* create temporary file to map stat to */
7491 tmpdir = getenv("TMPDIR");
7492 if (!tmpdir)
7493 tmpdir = "/tmp";
7494 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
7495 fd = mkstemp(filename);
7496 if (fd < 0) {
7497 return fd;
7498 }
7499 unlink(filename);
7500
7501 if ((r = fake_open->fill(cpu_env, fd))) {
7502 int e = errno;
7503 close(fd);
7504 errno = e;
7505 return r;
7506 }
7507 lseek(fd, 0, SEEK_SET);
7508
7509 return fd;
7510 }
7511
7512 return safe_openat(dirfd, path(pathname), flags, mode);
7513 }
7514
7515 #define TIMER_MAGIC 0x0caf0000
7516 #define TIMER_MAGIC_MASK 0xffff0000
7517
7518 /* Convert QEMU provided timer ID back to internal 16bit index format */
7519 static target_timer_t get_timer_id(abi_long arg)
7520 {
7521 target_timer_t timerid = arg;
7522
7523 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
7524 return -TARGET_EINVAL;
7525 }
7526
7527 timerid &= 0xffff;
7528
7529 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
7530 return -TARGET_EINVAL;
7531 }
7532
7533 return timerid;
7534 }
7535
7536 static int target_to_host_cpu_mask(unsigned long *host_mask,
7537 size_t host_size,
7538 abi_ulong target_addr,
7539 size_t target_size)
7540 {
7541 unsigned target_bits = sizeof(abi_ulong) * 8;
7542 unsigned host_bits = sizeof(*host_mask) * 8;
7543 abi_ulong *target_mask;
7544 unsigned i, j;
7545
7546 assert(host_size >= target_size);
7547
7548 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
7549 if (!target_mask) {
7550 return -TARGET_EFAULT;
7551 }
7552 memset(host_mask, 0, host_size);
7553
7554 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
7555 unsigned bit = i * target_bits;
7556 abi_ulong val;
7557
7558 __get_user(val, &target_mask[i]);
7559 for (j = 0; j < target_bits; j++, bit++) {
7560 if (val & (1UL << j)) {
7561 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
7562 }
7563 }
7564 }
7565
7566 unlock_user(target_mask, target_addr, 0);
7567 return 0;
7568 }
7569
7570 static int host_to_target_cpu_mask(const unsigned long *host_mask,
7571 size_t host_size,
7572 abi_ulong target_addr,
7573 size_t target_size)
7574 {
7575 unsigned target_bits = sizeof(abi_ulong) * 8;
7576 unsigned host_bits = sizeof(*host_mask) * 8;
7577 abi_ulong *target_mask;
7578 unsigned i, j;
7579
7580 assert(host_size >= target_size);
7581
7582 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
7583 if (!target_mask) {
7584 return -TARGET_EFAULT;
7585 }
7586
7587 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
7588 unsigned bit = i * target_bits;
7589 abi_ulong val = 0;
7590
7591 for (j = 0; j < target_bits; j++, bit++) {
7592 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
7593 val |= 1UL << j;
7594 }
7595 }
7596 __put_user(val, &target_mask[i]);
7597 }
7598
7599 unlock_user(target_mask, target_addr, target_size);
7600 return 0;
7601 }
7602
7603 /* This is an internal helper for do_syscall so that it is easier
7604 * to have a single return point, so that actions, such as logging
7605 * of syscall results, can be performed.
7606 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
7607 */
7608 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
7609 abi_long arg2, abi_long arg3, abi_long arg4,
7610 abi_long arg5, abi_long arg6, abi_long arg7,
7611 abi_long arg8)
7612 {
7613 CPUState *cpu = env_cpu(cpu_env);
7614 abi_long ret;
7615 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
7616 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
7617 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
7618 || defined(TARGET_NR_statx)
7619 struct stat st;
7620 #endif
7621 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
7622 || defined(TARGET_NR_fstatfs)
7623 struct statfs stfs;
7624 #endif
7625 void *p;
7626
7627 switch(num) {
7628 case TARGET_NR_exit:
7629 /* In old applications this may be used to implement _exit(2).
7630 However in threaded applictions it is used for thread termination,
7631 and _exit_group is used for application termination.
7632 Do thread termination if we have more then one thread. */
7633
7634 if (block_signals()) {
7635 return -TARGET_ERESTARTSYS;
7636 }
7637
7638 cpu_list_lock();
7639
7640 if (CPU_NEXT(first_cpu)) {
7641 TaskState *ts;
7642
7643 /* Remove the CPU from the list. */
7644 QTAILQ_REMOVE_RCU(&cpus, cpu, node);
7645
7646 cpu_list_unlock();
7647
7648 ts = cpu->opaque;
7649 if (ts->child_tidptr) {
7650 put_user_u32(0, ts->child_tidptr);
7651 do_sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
7652 NULL, NULL, 0);
7653 }
7654 thread_cpu = NULL;
7655 object_unref(OBJECT(cpu));
7656 g_free(ts);
7657 rcu_unregister_thread();
7658 pthread_exit(NULL);
7659 }
7660
7661 cpu_list_unlock();
7662 preexit_cleanup(cpu_env, arg1);
7663 _exit(arg1);
7664 return 0; /* avoid warning */
7665 case TARGET_NR_read:
7666 if (arg2 == 0 && arg3 == 0) {
7667 return get_errno(safe_read(arg1, 0, 0));
7668 } else {
7669 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
7670 return -TARGET_EFAULT;
7671 ret = get_errno(safe_read(arg1, p, arg3));
7672 if (ret >= 0 &&
7673 fd_trans_host_to_target_data(arg1)) {
7674 ret = fd_trans_host_to_target_data(arg1)(p, ret);
7675 }
7676 unlock_user(p, arg2, ret);
7677 }
7678 return ret;
7679 case TARGET_NR_write:
7680 if (arg2 == 0 && arg3 == 0) {
7681 return get_errno(safe_write(arg1, 0, 0));
7682 }
7683 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
7684 return -TARGET_EFAULT;
7685 if (fd_trans_target_to_host_data(arg1)) {
7686 void *copy = g_malloc(arg3);
7687 memcpy(copy, p, arg3);
7688 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
7689 if (ret >= 0) {
7690 ret = get_errno(safe_write(arg1, copy, ret));
7691 }
7692 g_free(copy);
7693 } else {
7694 ret = get_errno(safe_write(arg1, p, arg3));
7695 }
7696 unlock_user(p, arg2, 0);
7697 return ret;
7698
7699 #ifdef TARGET_NR_open
7700 case TARGET_NR_open:
7701 if (!(p = lock_user_string(arg1)))
7702 return -TARGET_EFAULT;
7703 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
7704 target_to_host_bitmask(arg2, fcntl_flags_tbl),
7705 arg3));
7706 fd_trans_unregister(ret);
7707 unlock_user(p, arg1, 0);
7708 return ret;
7709 #endif
7710 case TARGET_NR_openat:
7711 if (!(p = lock_user_string(arg2)))
7712 return -TARGET_EFAULT;
7713 ret = get_errno(do_openat(cpu_env, arg1, p,
7714 target_to_host_bitmask(arg3, fcntl_flags_tbl),
7715 arg4));
7716 fd_trans_unregister(ret);
7717 unlock_user(p, arg2, 0);
7718 return ret;
7719 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7720 case TARGET_NR_name_to_handle_at:
7721 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
7722 return ret;
7723 #endif
7724 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7725 case TARGET_NR_open_by_handle_at:
7726 ret = do_open_by_handle_at(arg1, arg2, arg3);
7727 fd_trans_unregister(ret);
7728 return ret;
7729 #endif
7730 case TARGET_NR_close:
7731 fd_trans_unregister(arg1);
7732 return get_errno(close(arg1));
7733
7734 case TARGET_NR_brk:
7735 return do_brk(arg1);
7736 #ifdef TARGET_NR_fork
7737 case TARGET_NR_fork:
7738 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
7739 #endif
7740 #ifdef TARGET_NR_waitpid
7741 case TARGET_NR_waitpid:
7742 {
7743 int status;
7744 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
7745 if (!is_error(ret) && arg2 && ret
7746 && put_user_s32(host_to_target_waitstatus(status), arg2))
7747 return -TARGET_EFAULT;
7748 }
7749 return ret;
7750 #endif
7751 #ifdef TARGET_NR_waitid
7752 case TARGET_NR_waitid:
7753 {
7754 siginfo_t info;
7755 info.si_pid = 0;
7756 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
7757 if (!is_error(ret) && arg3 && info.si_pid != 0) {
7758 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
7759 return -TARGET_EFAULT;
7760 host_to_target_siginfo(p, &info);
7761 unlock_user(p, arg3, sizeof(target_siginfo_t));
7762 }
7763 }
7764 return ret;
7765 #endif
7766 #ifdef TARGET_NR_creat /* not on alpha */
7767 case TARGET_NR_creat:
7768 if (!(p = lock_user_string(arg1)))
7769 return -TARGET_EFAULT;
7770 ret = get_errno(creat(p, arg2));
7771 fd_trans_unregister(ret);
7772 unlock_user(p, arg1, 0);
7773 return ret;
7774 #endif
7775 #ifdef TARGET_NR_link
7776 case TARGET_NR_link:
7777 {
7778 void * p2;
7779 p = lock_user_string(arg1);
7780 p2 = lock_user_string(arg2);
7781 if (!p || !p2)
7782 ret = -TARGET_EFAULT;
7783 else
7784 ret = get_errno(link(p, p2));
7785 unlock_user(p2, arg2, 0);
7786 unlock_user(p, arg1, 0);
7787 }
7788 return ret;
7789 #endif
7790 #if defined(TARGET_NR_linkat)
7791 case TARGET_NR_linkat:
7792 {
7793 void * p2 = NULL;
7794 if (!arg2 || !arg4)
7795 return -TARGET_EFAULT;
7796 p = lock_user_string(arg2);
7797 p2 = lock_user_string(arg4);
7798 if (!p || !p2)
7799 ret = -TARGET_EFAULT;
7800 else
7801 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
7802 unlock_user(p, arg2, 0);
7803 unlock_user(p2, arg4, 0);
7804 }
7805 return ret;
7806 #endif
7807 #ifdef TARGET_NR_unlink
7808 case TARGET_NR_unlink:
7809 if (!(p = lock_user_string(arg1)))
7810 return -TARGET_EFAULT;
7811 ret = get_errno(unlink(p));
7812 unlock_user(p, arg1, 0);
7813 return ret;
7814 #endif
7815 #if defined(TARGET_NR_unlinkat)
7816 case TARGET_NR_unlinkat:
7817 if (!(p = lock_user_string(arg2)))
7818 return -TARGET_EFAULT;
7819 ret = get_errno(unlinkat(arg1, p, arg3));
7820 unlock_user(p, arg2, 0);
7821 return ret;
7822 #endif
7823 case TARGET_NR_execve:
7824 {
7825 char **argp, **envp;
7826 int argc, envc;
7827 abi_ulong gp;
7828 abi_ulong guest_argp;
7829 abi_ulong guest_envp;
7830 abi_ulong addr;
7831 char **q;
7832 int total_size = 0;
7833
7834 argc = 0;
7835 guest_argp = arg2;
7836 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
7837 if (get_user_ual(addr, gp))
7838 return -TARGET_EFAULT;
7839 if (!addr)
7840 break;
7841 argc++;
7842 }
7843 envc = 0;
7844 guest_envp = arg3;
7845 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
7846 if (get_user_ual(addr, gp))
7847 return -TARGET_EFAULT;
7848 if (!addr)
7849 break;
7850 envc++;
7851 }
7852
7853 argp = g_new0(char *, argc + 1);
7854 envp = g_new0(char *, envc + 1);
7855
7856 for (gp = guest_argp, q = argp; gp;
7857 gp += sizeof(abi_ulong), q++) {
7858 if (get_user_ual(addr, gp))
7859 goto execve_efault;
7860 if (!addr)
7861 break;
7862 if (!(*q = lock_user_string(addr)))
7863 goto execve_efault;
7864 total_size += strlen(*q) + 1;
7865 }
7866 *q = NULL;
7867
7868 for (gp = guest_envp, q = envp; gp;
7869 gp += sizeof(abi_ulong), q++) {
7870 if (get_user_ual(addr, gp))
7871 goto execve_efault;
7872 if (!addr)
7873 break;
7874 if (!(*q = lock_user_string(addr)))
7875 goto execve_efault;
7876 total_size += strlen(*q) + 1;
7877 }
7878 *q = NULL;
7879
7880 if (!(p = lock_user_string(arg1)))
7881 goto execve_efault;
7882 /* Although execve() is not an interruptible syscall it is
7883 * a special case where we must use the safe_syscall wrapper:
7884 * if we allow a signal to happen before we make the host
7885 * syscall then we will 'lose' it, because at the point of
7886 * execve the process leaves QEMU's control. So we use the
7887 * safe syscall wrapper to ensure that we either take the
7888 * signal as a guest signal, or else it does not happen
7889 * before the execve completes and makes it the other
7890 * program's problem.
7891 */
7892 ret = get_errno(safe_execve(p, argp, envp));
7893 unlock_user(p, arg1, 0);
7894
7895 goto execve_end;
7896
7897 execve_efault:
7898 ret = -TARGET_EFAULT;
7899
7900 execve_end:
7901 for (gp = guest_argp, q = argp; *q;
7902 gp += sizeof(abi_ulong), q++) {
7903 if (get_user_ual(addr, gp)
7904 || !addr)
7905 break;
7906 unlock_user(*q, addr, 0);
7907 }
7908 for (gp = guest_envp, q = envp; *q;
7909 gp += sizeof(abi_ulong), q++) {
7910 if (get_user_ual(addr, gp)
7911 || !addr)
7912 break;
7913 unlock_user(*q, addr, 0);
7914 }
7915
7916 g_free(argp);
7917 g_free(envp);
7918 }
7919 return ret;
7920 case TARGET_NR_chdir:
7921 if (!(p = lock_user_string(arg1)))
7922 return -TARGET_EFAULT;
7923 ret = get_errno(chdir(p));
7924 unlock_user(p, arg1, 0);
7925 return ret;
7926 #ifdef TARGET_NR_time
7927 case TARGET_NR_time:
7928 {
7929 time_t host_time;
7930 ret = get_errno(time(&host_time));
7931 if (!is_error(ret)
7932 && arg1
7933 && put_user_sal(host_time, arg1))
7934 return -TARGET_EFAULT;
7935 }
7936 return ret;
7937 #endif
7938 #ifdef TARGET_NR_mknod
7939 case TARGET_NR_mknod:
7940 if (!(p = lock_user_string(arg1)))
7941 return -TARGET_EFAULT;
7942 ret = get_errno(mknod(p, arg2, arg3));
7943 unlock_user(p, arg1, 0);
7944 return ret;
7945 #endif
7946 #if defined(TARGET_NR_mknodat)
7947 case TARGET_NR_mknodat:
7948 if (!(p = lock_user_string(arg2)))
7949 return -TARGET_EFAULT;
7950 ret = get_errno(mknodat(arg1, p, arg3, arg4));
7951 unlock_user(p, arg2, 0);
7952 return ret;
7953 #endif
7954 #ifdef TARGET_NR_chmod
7955 case TARGET_NR_chmod:
7956 if (!(p = lock_user_string(arg1)))
7957 return -TARGET_EFAULT;
7958 ret = get_errno(chmod(p, arg2));
7959 unlock_user(p, arg1, 0);
7960 return ret;
7961 #endif
7962 #ifdef TARGET_NR_lseek
7963 case TARGET_NR_lseek:
7964 return get_errno(lseek(arg1, arg2, arg3));
7965 #endif
7966 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
7967 /* Alpha specific */
7968 case TARGET_NR_getxpid:
7969 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
7970 return get_errno(getpid());
7971 #endif
7972 #ifdef TARGET_NR_getpid
7973 case TARGET_NR_getpid:
7974 return get_errno(getpid());
7975 #endif
7976 case TARGET_NR_mount:
7977 {
7978 /* need to look at the data field */
7979 void *p2, *p3;
7980
7981 if (arg1) {
7982 p = lock_user_string(arg1);
7983 if (!p) {
7984 return -TARGET_EFAULT;
7985 }
7986 } else {
7987 p = NULL;
7988 }
7989
7990 p2 = lock_user_string(arg2);
7991 if (!p2) {
7992 if (arg1) {
7993 unlock_user(p, arg1, 0);
7994 }
7995 return -TARGET_EFAULT;
7996 }
7997
7998 if (arg3) {
7999 p3 = lock_user_string(arg3);
8000 if (!p3) {
8001 if (arg1) {
8002 unlock_user(p, arg1, 0);
8003 }
8004 unlock_user(p2, arg2, 0);
8005 return -TARGET_EFAULT;
8006 }
8007 } else {
8008 p3 = NULL;
8009 }
8010
8011 /* FIXME - arg5 should be locked, but it isn't clear how to
8012 * do that since it's not guaranteed to be a NULL-terminated
8013 * string.
8014 */
8015 if (!arg5) {
8016 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
8017 } else {
8018 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
8019 }
8020 ret = get_errno(ret);
8021
8022 if (arg1) {
8023 unlock_user(p, arg1, 0);
8024 }
8025 unlock_user(p2, arg2, 0);
8026 if (arg3) {
8027 unlock_user(p3, arg3, 0);
8028 }
8029 }
8030 return ret;
8031 #ifdef TARGET_NR_umount
8032 case TARGET_NR_umount:
8033 if (!(p = lock_user_string(arg1)))
8034 return -TARGET_EFAULT;
8035 ret = get_errno(umount(p));
8036 unlock_user(p, arg1, 0);
8037 return ret;
8038 #endif
8039 #ifdef TARGET_NR_stime /* not on alpha */
8040 case TARGET_NR_stime:
8041 {
8042 struct timespec ts;
8043 ts.tv_nsec = 0;
8044 if (get_user_sal(ts.tv_sec, arg1)) {
8045 return -TARGET_EFAULT;
8046 }
8047 return get_errno(clock_settime(CLOCK_REALTIME, &ts));
8048 }
8049 #endif
8050 #ifdef TARGET_NR_alarm /* not on alpha */
8051 case TARGET_NR_alarm:
8052 return alarm(arg1);
8053 #endif
8054 #ifdef TARGET_NR_pause /* not on alpha */
8055 case TARGET_NR_pause:
8056 if (!block_signals()) {
8057 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
8058 }
8059 return -TARGET_EINTR;
8060 #endif
8061 #ifdef TARGET_NR_utime
8062 case TARGET_NR_utime:
8063 {
8064 struct utimbuf tbuf, *host_tbuf;
8065 struct target_utimbuf *target_tbuf;
8066 if (arg2) {
8067 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
8068 return -TARGET_EFAULT;
8069 tbuf.actime = tswapal(target_tbuf->actime);
8070 tbuf.modtime = tswapal(target_tbuf->modtime);
8071 unlock_user_struct(target_tbuf, arg2, 0);
8072 host_tbuf = &tbuf;
8073 } else {
8074 host_tbuf = NULL;
8075 }
8076 if (!(p = lock_user_string(arg1)))
8077 return -TARGET_EFAULT;
8078 ret = get_errno(utime(p, host_tbuf));
8079 unlock_user(p, arg1, 0);
8080 }
8081 return ret;
8082 #endif
8083 #ifdef TARGET_NR_utimes
8084 case TARGET_NR_utimes:
8085 {
8086 struct timeval *tvp, tv[2];
8087 if (arg2) {
8088 if (copy_from_user_timeval(&tv[0], arg2)
8089 || copy_from_user_timeval(&tv[1],
8090 arg2 + sizeof(struct target_timeval)))
8091 return -TARGET_EFAULT;
8092 tvp = tv;
8093 } else {
8094 tvp = NULL;
8095 }
8096 if (!(p = lock_user_string(arg1)))
8097 return -TARGET_EFAULT;
8098 ret = get_errno(utimes(p, tvp));
8099 unlock_user(p, arg1, 0);
8100 }
8101 return ret;
8102 #endif
8103 #if defined(TARGET_NR_futimesat)
8104 case TARGET_NR_futimesat:
8105 {
8106 struct timeval *tvp, tv[2];
8107 if (arg3) {
8108 if (copy_from_user_timeval(&tv[0], arg3)
8109 || copy_from_user_timeval(&tv[1],
8110 arg3 + sizeof(struct target_timeval)))
8111 return -TARGET_EFAULT;
8112 tvp = tv;
8113 } else {
8114 tvp = NULL;
8115 }
8116 if (!(p = lock_user_string(arg2))) {
8117 return -TARGET_EFAULT;
8118 }
8119 ret = get_errno(futimesat(arg1, path(p), tvp));
8120 unlock_user(p, arg2, 0);
8121 }
8122 return ret;
8123 #endif
8124 #ifdef TARGET_NR_access
8125 case TARGET_NR_access:
8126 if (!(p = lock_user_string(arg1))) {
8127 return -TARGET_EFAULT;
8128 }
8129 ret = get_errno(access(path(p), arg2));
8130 unlock_user(p, arg1, 0);
8131 return ret;
8132 #endif
8133 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
8134 case TARGET_NR_faccessat:
8135 if (!(p = lock_user_string(arg2))) {
8136 return -TARGET_EFAULT;
8137 }
8138 ret = get_errno(faccessat(arg1, p, arg3, 0));
8139 unlock_user(p, arg2, 0);
8140 return ret;
8141 #endif
8142 #ifdef TARGET_NR_nice /* not on alpha */
8143 case TARGET_NR_nice:
8144 return get_errno(nice(arg1));
8145 #endif
8146 case TARGET_NR_sync:
8147 sync();
8148 return 0;
8149 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
8150 case TARGET_NR_syncfs:
8151 return get_errno(syncfs(arg1));
8152 #endif
8153 case TARGET_NR_kill:
8154 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
8155 #ifdef TARGET_NR_rename
8156 case TARGET_NR_rename:
8157 {
8158 void *p2;
8159 p = lock_user_string(arg1);
8160 p2 = lock_user_string(arg2);
8161 if (!p || !p2)
8162 ret = -TARGET_EFAULT;
8163 else
8164 ret = get_errno(rename(p, p2));
8165 unlock_user(p2, arg2, 0);
8166 unlock_user(p, arg1, 0);
8167 }
8168 return ret;
8169 #endif
8170 #if defined(TARGET_NR_renameat)
8171 case TARGET_NR_renameat:
8172 {
8173 void *p2;
8174 p = lock_user_string(arg2);
8175 p2 = lock_user_string(arg4);
8176 if (!p || !p2)
8177 ret = -TARGET_EFAULT;
8178 else
8179 ret = get_errno(renameat(arg1, p, arg3, p2));
8180 unlock_user(p2, arg4, 0);
8181 unlock_user(p, arg2, 0);
8182 }
8183 return ret;
8184 #endif
8185 #if defined(TARGET_NR_renameat2)
8186 case TARGET_NR_renameat2:
8187 {
8188 void *p2;
8189 p = lock_user_string(arg2);
8190 p2 = lock_user_string(arg4);
8191 if (!p || !p2) {
8192 ret = -TARGET_EFAULT;
8193 } else {
8194 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
8195 }
8196 unlock_user(p2, arg4, 0);
8197 unlock_user(p, arg2, 0);
8198 }
8199 return ret;
8200 #endif
8201 #ifdef TARGET_NR_mkdir
8202 case TARGET_NR_mkdir:
8203 if (!(p = lock_user_string(arg1)))
8204 return -TARGET_EFAULT;
8205 ret = get_errno(mkdir(p, arg2));
8206 unlock_user(p, arg1, 0);
8207 return ret;
8208 #endif
8209 #if defined(TARGET_NR_mkdirat)
8210 case TARGET_NR_mkdirat:
8211 if (!(p = lock_user_string(arg2)))
8212 return -TARGET_EFAULT;
8213 ret = get_errno(mkdirat(arg1, p, arg3));
8214 unlock_user(p, arg2, 0);
8215 return ret;
8216 #endif
8217 #ifdef TARGET_NR_rmdir
8218 case TARGET_NR_rmdir:
8219 if (!(p = lock_user_string(arg1)))
8220 return -TARGET_EFAULT;
8221 ret = get_errno(rmdir(p));
8222 unlock_user(p, arg1, 0);
8223 return ret;
8224 #endif
8225 case TARGET_NR_dup:
8226 ret = get_errno(dup(arg1));
8227 if (ret >= 0) {
8228 fd_trans_dup(arg1, ret);
8229 }
8230 return ret;
8231 #ifdef TARGET_NR_pipe
8232 case TARGET_NR_pipe:
8233 return do_pipe(cpu_env, arg1, 0, 0);
8234 #endif
8235 #ifdef TARGET_NR_pipe2
8236 case TARGET_NR_pipe2:
8237 return do_pipe(cpu_env, arg1,
8238 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
8239 #endif
8240 case TARGET_NR_times:
8241 {
8242 struct target_tms *tmsp;
8243 struct tms tms;
8244 ret = get_errno(times(&tms));
8245 if (arg1) {
8246 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
8247 if (!tmsp)
8248 return -TARGET_EFAULT;
8249 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
8250 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
8251 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
8252 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
8253 }
8254 if (!is_error(ret))
8255 ret = host_to_target_clock_t(ret);
8256 }
8257 return ret;
8258 case TARGET_NR_acct:
8259 if (arg1 == 0) {
8260 ret = get_errno(acct(NULL));
8261 } else {
8262 if (!(p = lock_user_string(arg1))) {
8263 return -TARGET_EFAULT;
8264 }
8265 ret = get_errno(acct(path(p)));
8266 unlock_user(p, arg1, 0);
8267 }
8268 return ret;
8269 #ifdef TARGET_NR_umount2
8270 case TARGET_NR_umount2:
8271 if (!(p = lock_user_string(arg1)))
8272 return -TARGET_EFAULT;
8273 ret = get_errno(umount2(p, arg2));
8274 unlock_user(p, arg1, 0);
8275 return ret;
8276 #endif
8277 case TARGET_NR_ioctl:
8278 return do_ioctl(arg1, arg2, arg3);
8279 #ifdef TARGET_NR_fcntl
8280 case TARGET_NR_fcntl:
8281 return do_fcntl(arg1, arg2, arg3);
8282 #endif
8283 case TARGET_NR_setpgid:
8284 return get_errno(setpgid(arg1, arg2));
8285 case TARGET_NR_umask:
8286 return get_errno(umask(arg1));
8287 case TARGET_NR_chroot:
8288 if (!(p = lock_user_string(arg1)))
8289 return -TARGET_EFAULT;
8290 ret = get_errno(chroot(p));
8291 unlock_user(p, arg1, 0);
8292 return ret;
8293 #ifdef TARGET_NR_dup2
8294 case TARGET_NR_dup2:
8295 ret = get_errno(dup2(arg1, arg2));
8296 if (ret >= 0) {
8297 fd_trans_dup(arg1, arg2);
8298 }
8299 return ret;
8300 #endif
8301 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
8302 case TARGET_NR_dup3:
8303 {
8304 int host_flags;
8305
8306 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
8307 return -EINVAL;
8308 }
8309 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
8310 ret = get_errno(dup3(arg1, arg2, host_flags));
8311 if (ret >= 0) {
8312 fd_trans_dup(arg1, arg2);
8313 }
8314 return ret;
8315 }
8316 #endif
8317 #ifdef TARGET_NR_getppid /* not on alpha */
8318 case TARGET_NR_getppid:
8319 return get_errno(getppid());
8320 #endif
8321 #ifdef TARGET_NR_getpgrp
8322 case TARGET_NR_getpgrp:
8323 return get_errno(getpgrp());
8324 #endif
8325 case TARGET_NR_setsid:
8326 return get_errno(setsid());
8327 #ifdef TARGET_NR_sigaction
8328 case TARGET_NR_sigaction:
8329 {
8330 #if defined(TARGET_ALPHA)
8331 struct target_sigaction act, oact, *pact = 0;
8332 struct target_old_sigaction *old_act;
8333 if (arg2) {
8334 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8335 return -TARGET_EFAULT;
8336 act._sa_handler = old_act->_sa_handler;
8337 target_siginitset(&act.sa_mask, old_act->sa_mask);
8338 act.sa_flags = old_act->sa_flags;
8339 act.sa_restorer = 0;
8340 unlock_user_struct(old_act, arg2, 0);
8341 pact = &act;
8342 }
8343 ret = get_errno(do_sigaction(arg1, pact, &oact));
8344 if (!is_error(ret) && arg3) {
8345 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8346 return -TARGET_EFAULT;
8347 old_act->_sa_handler = oact._sa_handler;
8348 old_act->sa_mask = oact.sa_mask.sig[0];
8349 old_act->sa_flags = oact.sa_flags;
8350 unlock_user_struct(old_act, arg3, 1);
8351 }
8352 #elif defined(TARGET_MIPS)
8353 struct target_sigaction act, oact, *pact, *old_act;
8354
8355 if (arg2) {
8356 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8357 return -TARGET_EFAULT;
8358 act._sa_handler = old_act->_sa_handler;
8359 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
8360 act.sa_flags = old_act->sa_flags;
8361 unlock_user_struct(old_act, arg2, 0);
8362 pact = &act;
8363 } else {
8364 pact = NULL;
8365 }
8366
8367 ret = get_errno(do_sigaction(arg1, pact, &oact));
8368
8369 if (!is_error(ret) && arg3) {
8370 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8371 return -TARGET_EFAULT;
8372 old_act->_sa_handler = oact._sa_handler;
8373 old_act->sa_flags = oact.sa_flags;
8374 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
8375 old_act->sa_mask.sig[1] = 0;
8376 old_act->sa_mask.sig[2] = 0;
8377 old_act->sa_mask.sig[3] = 0;
8378 unlock_user_struct(old_act, arg3, 1);
8379 }
8380 #else
8381 struct target_old_sigaction *old_act;
8382 struct target_sigaction act, oact, *pact;
8383 if (arg2) {
8384 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
8385 return -TARGET_EFAULT;
8386 act._sa_handler = old_act->_sa_handler;
8387 target_siginitset(&act.sa_mask, old_act->sa_mask);
8388 act.sa_flags = old_act->sa_flags;
8389 act.sa_restorer = old_act->sa_restorer;
8390 #ifdef TARGET_ARCH_HAS_KA_RESTORER
8391 act.ka_restorer = 0;
8392 #endif
8393 unlock_user_struct(old_act, arg2, 0);
8394 pact = &act;
8395 } else {
8396 pact = NULL;
8397 }
8398 ret = get_errno(do_sigaction(arg1, pact, &oact));
8399 if (!is_error(ret) && arg3) {
8400 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8401 return -TARGET_EFAULT;
8402 old_act->_sa_handler = oact._sa_handler;
8403 old_act->sa_mask = oact.sa_mask.sig[0];
8404 old_act->sa_flags = oact.sa_flags;
8405 old_act->sa_restorer = oact.sa_restorer;
8406 unlock_user_struct(old_act, arg3, 1);
8407 }
8408 #endif
8409 }
8410 return ret;
8411 #endif
8412 case TARGET_NR_rt_sigaction:
8413 {
8414 #if defined(TARGET_ALPHA)
8415 /* For Alpha and SPARC this is a 5 argument syscall, with
8416 * a 'restorer' parameter which must be copied into the
8417 * sa_restorer field of the sigaction struct.
8418 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
8419 * and arg5 is the sigsetsize.
8420 * Alpha also has a separate rt_sigaction struct that it uses
8421 * here; SPARC uses the usual sigaction struct.
8422 */
8423 struct target_rt_sigaction *rt_act;
8424 struct target_sigaction act, oact, *pact = 0;
8425
8426 if (arg4 != sizeof(target_sigset_t)) {
8427 return -TARGET_EINVAL;
8428 }
8429 if (arg2) {
8430 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
8431 return -TARGET_EFAULT;
8432 act._sa_handler = rt_act->_sa_handler;
8433 act.sa_mask = rt_act->sa_mask;
8434 act.sa_flags = rt_act->sa_flags;
8435 act.sa_restorer = arg5;
8436 unlock_user_struct(rt_act, arg2, 0);
8437 pact = &act;
8438 }
8439 ret = get_errno(do_sigaction(arg1, pact, &oact));
8440 if (!is_error(ret) && arg3) {
8441 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
8442 return -TARGET_EFAULT;
8443 rt_act->_sa_handler = oact._sa_handler;
8444 rt_act->sa_mask = oact.sa_mask;
8445 rt_act->sa_flags = oact.sa_flags;
8446 unlock_user_struct(rt_act, arg3, 1);
8447 }
8448 #else
8449 #ifdef TARGET_SPARC
8450 target_ulong restorer = arg4;
8451 target_ulong sigsetsize = arg5;
8452 #else
8453 target_ulong sigsetsize = arg4;
8454 #endif
8455 struct target_sigaction *act;
8456 struct target_sigaction *oact;
8457
8458 if (sigsetsize != sizeof(target_sigset_t)) {
8459 return -TARGET_EINVAL;
8460 }
8461 if (arg2) {
8462 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
8463 return -TARGET_EFAULT;
8464 }
8465 #ifdef TARGET_ARCH_HAS_KA_RESTORER
8466 act->ka_restorer = restorer;
8467 #endif
8468 } else {
8469 act = NULL;
8470 }
8471 if (arg3) {
8472 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
8473 ret = -TARGET_EFAULT;
8474 goto rt_sigaction_fail;
8475 }
8476 } else
8477 oact = NULL;
8478 ret = get_errno(do_sigaction(arg1, act, oact));
8479 rt_sigaction_fail:
8480 if (act)
8481 unlock_user_struct(act, arg2, 0);
8482 if (oact)
8483 unlock_user_struct(oact, arg3, 1);
8484 #endif
8485 }
8486 return ret;
8487 #ifdef TARGET_NR_sgetmask /* not on alpha */
8488 case TARGET_NR_sgetmask:
8489 {
8490 sigset_t cur_set;
8491 abi_ulong target_set;
8492 ret = do_sigprocmask(0, NULL, &cur_set);
8493 if (!ret) {
8494 host_to_target_old_sigset(&target_set, &cur_set);
8495 ret = target_set;
8496 }
8497 }
8498 return ret;
8499 #endif
8500 #ifdef TARGET_NR_ssetmask /* not on alpha */
8501 case TARGET_NR_ssetmask:
8502 {
8503 sigset_t set, oset;
8504 abi_ulong target_set = arg1;
8505 target_to_host_old_sigset(&set, &target_set);
8506 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
8507 if (!ret) {
8508 host_to_target_old_sigset(&target_set, &oset);
8509 ret = target_set;
8510 }
8511 }
8512 return ret;
8513 #endif
8514 #ifdef TARGET_NR_sigprocmask
8515 case TARGET_NR_sigprocmask:
8516 {
8517 #if defined(TARGET_ALPHA)
8518 sigset_t set, oldset;
8519 abi_ulong mask;
8520 int how;
8521
8522 switch (arg1) {
8523 case TARGET_SIG_BLOCK:
8524 how = SIG_BLOCK;
8525 break;
8526 case TARGET_SIG_UNBLOCK:
8527 how = SIG_UNBLOCK;
8528 break;
8529 case TARGET_SIG_SETMASK:
8530 how = SIG_SETMASK;
8531 break;
8532 default:
8533 return -TARGET_EINVAL;
8534 }
8535 mask = arg2;
8536 target_to_host_old_sigset(&set, &mask);
8537
8538 ret = do_sigprocmask(how, &set, &oldset);
8539 if (!is_error(ret)) {
8540 host_to_target_old_sigset(&mask, &oldset);
8541 ret = mask;
8542 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
8543 }
8544 #else
8545 sigset_t set, oldset, *set_ptr;
8546 int how;
8547
8548 if (arg2) {
8549 switch (arg1) {
8550 case TARGET_SIG_BLOCK:
8551 how = SIG_BLOCK;
8552 break;
8553 case TARGET_SIG_UNBLOCK:
8554 how = SIG_UNBLOCK;
8555 break;
8556 case TARGET_SIG_SETMASK:
8557 how = SIG_SETMASK;
8558 break;
8559 default:
8560 return -TARGET_EINVAL;
8561 }
8562 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8563 return -TARGET_EFAULT;
8564 target_to_host_old_sigset(&set, p);
8565 unlock_user(p, arg2, 0);
8566 set_ptr = &set;
8567 } else {
8568 how = 0;
8569 set_ptr = NULL;
8570 }
8571 ret = do_sigprocmask(how, set_ptr, &oldset);
8572 if (!is_error(ret) && arg3) {
8573 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8574 return -TARGET_EFAULT;
8575 host_to_target_old_sigset(p, &oldset);
8576 unlock_user(p, arg3, sizeof(target_sigset_t));
8577 }
8578 #endif
8579 }
8580 return ret;
8581 #endif
8582 case TARGET_NR_rt_sigprocmask:
8583 {
8584 int how = arg1;
8585 sigset_t set, oldset, *set_ptr;
8586
8587 if (arg4 != sizeof(target_sigset_t)) {
8588 return -TARGET_EINVAL;
8589 }
8590
8591 if (arg2) {
8592 switch(how) {
8593 case TARGET_SIG_BLOCK:
8594 how = SIG_BLOCK;
8595 break;
8596 case TARGET_SIG_UNBLOCK:
8597 how = SIG_UNBLOCK;
8598 break;
8599 case TARGET_SIG_SETMASK:
8600 how = SIG_SETMASK;
8601 break;
8602 default:
8603 return -TARGET_EINVAL;
8604 }
8605 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8606 return -TARGET_EFAULT;
8607 target_to_host_sigset(&set, p);
8608 unlock_user(p, arg2, 0);
8609 set_ptr = &set;
8610 } else {
8611 how = 0;
8612 set_ptr = NULL;
8613 }
8614 ret = do_sigprocmask(how, set_ptr, &oldset);
8615 if (!is_error(ret) && arg3) {
8616 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8617 return -TARGET_EFAULT;
8618 host_to_target_sigset(p, &oldset);
8619 unlock_user(p, arg3, sizeof(target_sigset_t));
8620 }
8621 }
8622 return ret;
8623 #ifdef TARGET_NR_sigpending
8624 case TARGET_NR_sigpending:
8625 {
8626 sigset_t set;
8627 ret = get_errno(sigpending(&set));
8628 if (!is_error(ret)) {
8629 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8630 return -TARGET_EFAULT;
8631 host_to_target_old_sigset(p, &set);
8632 unlock_user(p, arg1, sizeof(target_sigset_t));
8633 }
8634 }
8635 return ret;
8636 #endif
8637 case TARGET_NR_rt_sigpending:
8638 {
8639 sigset_t set;
8640
8641 /* Yes, this check is >, not != like most. We follow the kernel's
8642 * logic and it does it like this because it implements
8643 * NR_sigpending through the same code path, and in that case
8644 * the old_sigset_t is smaller in size.
8645 */
8646 if (arg2 > sizeof(target_sigset_t)) {
8647 return -TARGET_EINVAL;
8648 }
8649
8650 ret = get_errno(sigpending(&set));
8651 if (!is_error(ret)) {
8652 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8653 return -TARGET_EFAULT;
8654 host_to_target_sigset(p, &set);
8655 unlock_user(p, arg1, sizeof(target_sigset_t));
8656 }
8657 }
8658 return ret;
8659 #ifdef TARGET_NR_sigsuspend
8660 case TARGET_NR_sigsuspend:
8661 {
8662 TaskState *ts = cpu->opaque;
8663 #if defined(TARGET_ALPHA)
8664 abi_ulong mask = arg1;
8665 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
8666 #else
8667 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8668 return -TARGET_EFAULT;
8669 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
8670 unlock_user(p, arg1, 0);
8671 #endif
8672 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8673 SIGSET_T_SIZE));
8674 if (ret != -TARGET_ERESTARTSYS) {
8675 ts->in_sigsuspend = 1;
8676 }
8677 }
8678 return ret;
8679 #endif
8680 case TARGET_NR_rt_sigsuspend:
8681 {
8682 TaskState *ts = cpu->opaque;
8683
8684 if (arg2 != sizeof(target_sigset_t)) {
8685 return -TARGET_EINVAL;
8686 }
8687 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8688 return -TARGET_EFAULT;
8689 target_to_host_sigset(&ts->sigsuspend_mask, p);
8690 unlock_user(p, arg1, 0);
8691 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8692 SIGSET_T_SIZE));
8693 if (ret != -TARGET_ERESTARTSYS) {
8694 ts->in_sigsuspend = 1;
8695 }
8696 }
8697 return ret;
8698 #ifdef TARGET_NR_rt_sigtimedwait
8699 case TARGET_NR_rt_sigtimedwait:
8700 {
8701 sigset_t set;
8702 struct timespec uts, *puts;
8703 siginfo_t uinfo;
8704
8705 if (arg4 != sizeof(target_sigset_t)) {
8706 return -TARGET_EINVAL;
8707 }
8708
8709 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8710 return -TARGET_EFAULT;
8711 target_to_host_sigset(&set, p);
8712 unlock_user(p, arg1, 0);
8713 if (arg3) {
8714 puts = &uts;
8715 target_to_host_timespec(puts, arg3);
8716 } else {
8717 puts = NULL;
8718 }
8719 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
8720 SIGSET_T_SIZE));
8721 if (!is_error(ret)) {
8722 if (arg2) {
8723 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
8724 0);
8725 if (!p) {
8726 return -TARGET_EFAULT;
8727 }
8728 host_to_target_siginfo(p, &uinfo);
8729 unlock_user(p, arg2, sizeof(target_siginfo_t));
8730 }
8731 ret = host_to_target_signal(ret);
8732 }
8733 }
8734 return ret;
8735 #endif
8736 case TARGET_NR_rt_sigqueueinfo:
8737 {
8738 siginfo_t uinfo;
8739
8740 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8741 if (!p) {
8742 return -TARGET_EFAULT;
8743 }
8744 target_to_host_siginfo(&uinfo, p);
8745 unlock_user(p, arg3, 0);
8746 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
8747 }
8748 return ret;
8749 case TARGET_NR_rt_tgsigqueueinfo:
8750 {
8751 siginfo_t uinfo;
8752
8753 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
8754 if (!p) {
8755 return -TARGET_EFAULT;
8756 }
8757 target_to_host_siginfo(&uinfo, p);
8758 unlock_user(p, arg4, 0);
8759 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
8760 }
8761 return ret;
8762 #ifdef TARGET_NR_sigreturn
8763 case TARGET_NR_sigreturn:
8764 if (block_signals()) {
8765 return -TARGET_ERESTARTSYS;
8766 }
8767 return do_sigreturn(cpu_env);
8768 #endif
8769 case TARGET_NR_rt_sigreturn:
8770 if (block_signals()) {
8771 return -TARGET_ERESTARTSYS;
8772 }
8773 return do_rt_sigreturn(cpu_env);
8774 case TARGET_NR_sethostname:
8775 if (!(p = lock_user_string(arg1)))
8776 return -TARGET_EFAULT;
8777 ret = get_errno(sethostname(p, arg2));
8778 unlock_user(p, arg1, 0);
8779 return ret;
8780 #ifdef TARGET_NR_setrlimit
8781 case TARGET_NR_setrlimit:
8782 {
8783 int resource = target_to_host_resource(arg1);
8784 struct target_rlimit *target_rlim;
8785 struct rlimit rlim;
8786 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
8787 return -TARGET_EFAULT;
8788 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
8789 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
8790 unlock_user_struct(target_rlim, arg2, 0);
8791 /*
8792 * If we just passed through resource limit settings for memory then
8793 * they would also apply to QEMU's own allocations, and QEMU will
8794 * crash or hang or die if its allocations fail. Ideally we would
8795 * track the guest allocations in QEMU and apply the limits ourselves.
8796 * For now, just tell the guest the call succeeded but don't actually
8797 * limit anything.
8798 */
8799 if (resource != RLIMIT_AS &&
8800 resource != RLIMIT_DATA &&
8801 resource != RLIMIT_STACK) {
8802 return get_errno(setrlimit(resource, &rlim));
8803 } else {
8804 return 0;
8805 }
8806 }
8807 #endif
8808 #ifdef TARGET_NR_getrlimit
8809 case TARGET_NR_getrlimit:
8810 {
8811 int resource = target_to_host_resource(arg1);
8812 struct target_rlimit *target_rlim;
8813 struct rlimit rlim;
8814
8815 ret = get_errno(getrlimit(resource, &rlim));
8816 if (!is_error(ret)) {
8817 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
8818 return -TARGET_EFAULT;
8819 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
8820 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
8821 unlock_user_struct(target_rlim, arg2, 1);
8822 }
8823 }
8824 return ret;
8825 #endif
8826 case TARGET_NR_getrusage:
8827 {
8828 struct rusage rusage;
8829 ret = get_errno(getrusage(arg1, &rusage));
8830 if (!is_error(ret)) {
8831 ret = host_to_target_rusage(arg2, &rusage);
8832 }
8833 }
8834 return ret;
8835 #if defined(TARGET_NR_gettimeofday)
8836 case TARGET_NR_gettimeofday:
8837 {
8838 struct timeval tv;
8839 struct timezone tz;
8840
8841 ret = get_errno(gettimeofday(&tv, &tz));
8842 if (!is_error(ret)) {
8843 if (arg1 && copy_to_user_timeval(arg1, &tv)) {
8844 return -TARGET_EFAULT;
8845 }
8846 if (arg2 && copy_to_user_timezone(arg2, &tz)) {
8847 return -TARGET_EFAULT;
8848 }
8849 }
8850 }
8851 return ret;
8852 #endif
8853 #if defined(TARGET_NR_settimeofday)
8854 case TARGET_NR_settimeofday:
8855 {
8856 struct timeval tv, *ptv = NULL;
8857 struct timezone tz, *ptz = NULL;
8858
8859 if (arg1) {
8860 if (copy_from_user_timeval(&tv, arg1)) {
8861 return -TARGET_EFAULT;
8862 }
8863 ptv = &tv;
8864 }
8865
8866 if (arg2) {
8867 if (copy_from_user_timezone(&tz, arg2)) {
8868 return -TARGET_EFAULT;
8869 }
8870 ptz = &tz;
8871 }
8872
8873 return get_errno(settimeofday(ptv, ptz));
8874 }
8875 #endif
8876 #if defined(TARGET_NR_select)
8877 case TARGET_NR_select:
8878 #if defined(TARGET_WANT_NI_OLD_SELECT)
8879 /* some architectures used to have old_select here
8880 * but now ENOSYS it.
8881 */
8882 ret = -TARGET_ENOSYS;
8883 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
8884 ret = do_old_select(arg1);
8885 #else
8886 ret = do_select(arg1, arg2, arg3, arg4, arg5);
8887 #endif
8888 return ret;
8889 #endif
8890 #ifdef TARGET_NR_pselect6
8891 case TARGET_NR_pselect6:
8892 {
8893 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
8894 fd_set rfds, wfds, efds;
8895 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
8896 struct timespec ts, *ts_ptr;
8897
8898 /*
8899 * The 6th arg is actually two args smashed together,
8900 * so we cannot use the C library.
8901 */
8902 sigset_t set;
8903 struct {
8904 sigset_t *set;
8905 size_t size;
8906 } sig, *sig_ptr;
8907
8908 abi_ulong arg_sigset, arg_sigsize, *arg7;
8909 target_sigset_t *target_sigset;
8910
8911 n = arg1;
8912 rfd_addr = arg2;
8913 wfd_addr = arg3;
8914 efd_addr = arg4;
8915 ts_addr = arg5;
8916
8917 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
8918 if (ret) {
8919 return ret;
8920 }
8921 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
8922 if (ret) {
8923 return ret;
8924 }
8925 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
8926 if (ret) {
8927 return ret;
8928 }
8929
8930 /*
8931 * This takes a timespec, and not a timeval, so we cannot
8932 * use the do_select() helper ...
8933 */
8934 if (ts_addr) {
8935 if (target_to_host_timespec(&ts, ts_addr)) {
8936 return -TARGET_EFAULT;
8937 }
8938 ts_ptr = &ts;
8939 } else {
8940 ts_ptr = NULL;
8941 }
8942
8943 /* Extract the two packed args for the sigset */
8944 if (arg6) {
8945 sig_ptr = &sig;
8946 sig.size = SIGSET_T_SIZE;
8947
8948 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
8949 if (!arg7) {
8950 return -TARGET_EFAULT;
8951 }
8952 arg_sigset = tswapal(arg7[0]);
8953 arg_sigsize = tswapal(arg7[1]);
8954 unlock_user(arg7, arg6, 0);
8955
8956 if (arg_sigset) {
8957 sig.set = &set;
8958 if (arg_sigsize != sizeof(*target_sigset)) {
8959 /* Like the kernel, we enforce correct size sigsets */
8960 return -TARGET_EINVAL;
8961 }
8962 target_sigset = lock_user(VERIFY_READ, arg_sigset,
8963 sizeof(*target_sigset), 1);
8964 if (!target_sigset) {
8965 return -TARGET_EFAULT;
8966 }
8967 target_to_host_sigset(&set, target_sigset);
8968 unlock_user(target_sigset, arg_sigset, 0);
8969 } else {
8970 sig.set = NULL;
8971 }
8972 } else {
8973 sig_ptr = NULL;
8974 }
8975
8976 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
8977 ts_ptr, sig_ptr));
8978
8979 if (!is_error(ret)) {
8980 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
8981 return -TARGET_EFAULT;
8982 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
8983 return -TARGET_EFAULT;
8984 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
8985 return -TARGET_EFAULT;
8986
8987 if (ts_addr && host_to_target_timespec(ts_addr, &ts))
8988 return -TARGET_EFAULT;
8989 }
8990 }
8991 return ret;
8992 #endif
8993 #ifdef TARGET_NR_symlink
8994 case TARGET_NR_symlink:
8995 {
8996 void *p2;
8997 p = lock_user_string(arg1);
8998 p2 = lock_user_string(arg2);
8999 if (!p || !p2)
9000 ret = -TARGET_EFAULT;
9001 else
9002 ret = get_errno(symlink(p, p2));
9003 unlock_user(p2, arg2, 0);
9004 unlock_user(p, arg1, 0);
9005 }
9006 return ret;
9007 #endif
9008 #if defined(TARGET_NR_symlinkat)
9009 case TARGET_NR_symlinkat:
9010 {
9011 void *p2;
9012 p = lock_user_string(arg1);
9013 p2 = lock_user_string(arg3);
9014 if (!p || !p2)
9015 ret = -TARGET_EFAULT;
9016 else
9017 ret = get_errno(symlinkat(p, arg2, p2));
9018 unlock_user(p2, arg3, 0);
9019 unlock_user(p, arg1, 0);
9020 }
9021 return ret;
9022 #endif
9023 #ifdef TARGET_NR_readlink
9024 case TARGET_NR_readlink:
9025 {
9026 void *p2;
9027 p = lock_user_string(arg1);
9028 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9029 if (!p || !p2) {
9030 ret = -TARGET_EFAULT;
9031 } else if (!arg3) {
9032 /* Short circuit this for the magic exe check. */
9033 ret = -TARGET_EINVAL;
9034 } else if (is_proc_myself((const char *)p, "exe")) {
9035 char real[PATH_MAX], *temp;
9036 temp = realpath(exec_path, real);
9037 /* Return value is # of bytes that we wrote to the buffer. */
9038 if (temp == NULL) {
9039 ret = get_errno(-1);
9040 } else {
9041 /* Don't worry about sign mismatch as earlier mapping
9042 * logic would have thrown a bad address error. */
9043 ret = MIN(strlen(real), arg3);
9044 /* We cannot NUL terminate the string. */
9045 memcpy(p2, real, ret);
9046 }
9047 } else {
9048 ret = get_errno(readlink(path(p), p2, arg3));
9049 }
9050 unlock_user(p2, arg2, ret);
9051 unlock_user(p, arg1, 0);
9052 }
9053 return ret;
9054 #endif
9055 #if defined(TARGET_NR_readlinkat)
9056 case TARGET_NR_readlinkat:
9057 {
9058 void *p2;
9059 p = lock_user_string(arg2);
9060 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
9061 if (!p || !p2) {
9062 ret = -TARGET_EFAULT;
9063 } else if (is_proc_myself((const char *)p, "exe")) {
9064 char real[PATH_MAX], *temp;
9065 temp = realpath(exec_path, real);
9066 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
9067 snprintf((char *)p2, arg4, "%s", real);
9068 } else {
9069 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
9070 }
9071 unlock_user(p2, arg3, ret);
9072 unlock_user(p, arg2, 0);
9073 }
9074 return ret;
9075 #endif
9076 #ifdef TARGET_NR_swapon
9077 case TARGET_NR_swapon:
9078 if (!(p = lock_user_string(arg1)))
9079 return -TARGET_EFAULT;
9080 ret = get_errno(swapon(p, arg2));
9081 unlock_user(p, arg1, 0);
9082 return ret;
9083 #endif
9084 case TARGET_NR_reboot:
9085 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
9086 /* arg4 must be ignored in all other cases */
9087 p = lock_user_string(arg4);
9088 if (!p) {
9089 return -TARGET_EFAULT;
9090 }
9091 ret = get_errno(reboot(arg1, arg2, arg3, p));
9092 unlock_user(p, arg4, 0);
9093 } else {
9094 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
9095 }
9096 return ret;
9097 #ifdef TARGET_NR_mmap
9098 case TARGET_NR_mmap:
9099 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
9100 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
9101 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
9102 || defined(TARGET_S390X)
9103 {
9104 abi_ulong *v;
9105 abi_ulong v1, v2, v3, v4, v5, v6;
9106 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
9107 return -TARGET_EFAULT;
9108 v1 = tswapal(v[0]);
9109 v2 = tswapal(v[1]);
9110 v3 = tswapal(v[2]);
9111 v4 = tswapal(v[3]);
9112 v5 = tswapal(v[4]);
9113 v6 = tswapal(v[5]);
9114 unlock_user(v, arg1, 0);
9115 ret = get_errno(target_mmap(v1, v2, v3,
9116 target_to_host_bitmask(v4, mmap_flags_tbl),
9117 v5, v6));
9118 }
9119 #else
9120 ret = get_errno(target_mmap(arg1, arg2, arg3,
9121 target_to_host_bitmask(arg4, mmap_flags_tbl),
9122 arg5,
9123 arg6));
9124 #endif
9125 return ret;
9126 #endif
9127 #ifdef TARGET_NR_mmap2
9128 case TARGET_NR_mmap2:
9129 #ifndef MMAP_SHIFT
9130 #define MMAP_SHIFT 12
9131 #endif
9132 ret = target_mmap(arg1, arg2, arg3,
9133 target_to_host_bitmask(arg4, mmap_flags_tbl),
9134 arg5, arg6 << MMAP_SHIFT);
9135 return get_errno(ret);
9136 #endif
9137 case TARGET_NR_munmap:
9138 return get_errno(target_munmap(arg1, arg2));
9139 case TARGET_NR_mprotect:
9140 {
9141 TaskState *ts = cpu->opaque;
9142 /* Special hack to detect libc making the stack executable. */
9143 if ((arg3 & PROT_GROWSDOWN)
9144 && arg1 >= ts->info->stack_limit
9145 && arg1 <= ts->info->start_stack) {
9146 arg3 &= ~PROT_GROWSDOWN;
9147 arg2 = arg2 + arg1 - ts->info->stack_limit;
9148 arg1 = ts->info->stack_limit;
9149 }
9150 }
9151 return get_errno(target_mprotect(arg1, arg2, arg3));
9152 #ifdef TARGET_NR_mremap
9153 case TARGET_NR_mremap:
9154 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
9155 #endif
9156 /* ??? msync/mlock/munlock are broken for softmmu. */
9157 #ifdef TARGET_NR_msync
9158 case TARGET_NR_msync:
9159 return get_errno(msync(g2h(arg1), arg2, arg3));
9160 #endif
9161 #ifdef TARGET_NR_mlock
9162 case TARGET_NR_mlock:
9163 return get_errno(mlock(g2h(arg1), arg2));
9164 #endif
9165 #ifdef TARGET_NR_munlock
9166 case TARGET_NR_munlock:
9167 return get_errno(munlock(g2h(arg1), arg2));
9168 #endif
9169 #ifdef TARGET_NR_mlockall
9170 case TARGET_NR_mlockall:
9171 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
9172 #endif
9173 #ifdef TARGET_NR_munlockall
9174 case TARGET_NR_munlockall:
9175 return get_errno(munlockall());
9176 #endif
9177 #ifdef TARGET_NR_truncate
9178 case TARGET_NR_truncate:
9179 if (!(p = lock_user_string(arg1)))
9180 return -TARGET_EFAULT;
9181 ret = get_errno(truncate(p, arg2));
9182 unlock_user(p, arg1, 0);
9183 return ret;
9184 #endif
9185 #ifdef TARGET_NR_ftruncate
9186 case TARGET_NR_ftruncate:
9187 return get_errno(ftruncate(arg1, arg2));
9188 #endif
9189 case TARGET_NR_fchmod:
9190 return get_errno(fchmod(arg1, arg2));
9191 #if defined(TARGET_NR_fchmodat)
9192 case TARGET_NR_fchmodat:
9193 if (!(p = lock_user_string(arg2)))
9194 return -TARGET_EFAULT;
9195 ret = get_errno(fchmodat(arg1, p, arg3, 0));
9196 unlock_user(p, arg2, 0);
9197 return ret;
9198 #endif
9199 case TARGET_NR_getpriority:
9200 /* Note that negative values are valid for getpriority, so we must
9201 differentiate based on errno settings. */
9202 errno = 0;
9203 ret = getpriority(arg1, arg2);
9204 if (ret == -1 && errno != 0) {
9205 return -host_to_target_errno(errno);
9206 }
9207 #ifdef TARGET_ALPHA
9208 /* Return value is the unbiased priority. Signal no error. */
9209 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
9210 #else
9211 /* Return value is a biased priority to avoid negative numbers. */
9212 ret = 20 - ret;
9213 #endif
9214 return ret;
9215 case TARGET_NR_setpriority:
9216 return get_errno(setpriority(arg1, arg2, arg3));
9217 #ifdef TARGET_NR_statfs
9218 case TARGET_NR_statfs:
9219 if (!(p = lock_user_string(arg1))) {
9220 return -TARGET_EFAULT;
9221 }
9222 ret = get_errno(statfs(path(p), &stfs));
9223 unlock_user(p, arg1, 0);
9224 convert_statfs:
9225 if (!is_error(ret)) {
9226 struct target_statfs *target_stfs;
9227
9228 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
9229 return -TARGET_EFAULT;
9230 __put_user(stfs.f_type, &target_stfs->f_type);
9231 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9232 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9233 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9234 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9235 __put_user(stfs.f_files, &target_stfs->f_files);
9236 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9237 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9238 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9239 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9240 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9241 #ifdef _STATFS_F_FLAGS
9242 __put_user(stfs.f_flags, &target_stfs->f_flags);
9243 #else
9244 __put_user(0, &target_stfs->f_flags);
9245 #endif
9246 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9247 unlock_user_struct(target_stfs, arg2, 1);
9248 }
9249 return ret;
9250 #endif
9251 #ifdef TARGET_NR_fstatfs
9252 case TARGET_NR_fstatfs:
9253 ret = get_errno(fstatfs(arg1, &stfs));
9254 goto convert_statfs;
9255 #endif
9256 #ifdef TARGET_NR_statfs64
9257 case TARGET_NR_statfs64:
9258 if (!(p = lock_user_string(arg1))) {
9259 return -TARGET_EFAULT;
9260 }
9261 ret = get_errno(statfs(path(p), &stfs));
9262 unlock_user(p, arg1, 0);
9263 convert_statfs64:
9264 if (!is_error(ret)) {
9265 struct target_statfs64 *target_stfs;
9266
9267 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
9268 return -TARGET_EFAULT;
9269 __put_user(stfs.f_type, &target_stfs->f_type);
9270 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
9271 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
9272 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
9273 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
9274 __put_user(stfs.f_files, &target_stfs->f_files);
9275 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
9276 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
9277 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
9278 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
9279 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
9280 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
9281 unlock_user_struct(target_stfs, arg3, 1);
9282 }
9283 return ret;
9284 case TARGET_NR_fstatfs64:
9285 ret = get_errno(fstatfs(arg1, &stfs));
9286 goto convert_statfs64;
9287 #endif
9288 #ifdef TARGET_NR_socketcall
9289 case TARGET_NR_socketcall:
9290 return do_socketcall(arg1, arg2);
9291 #endif
9292 #ifdef TARGET_NR_accept
9293 case TARGET_NR_accept:
9294 return do_accept4(arg1, arg2, arg3, 0);
9295 #endif
9296 #ifdef TARGET_NR_accept4
9297 case TARGET_NR_accept4:
9298 return do_accept4(arg1, arg2, arg3, arg4);
9299 #endif
9300 #ifdef TARGET_NR_bind
9301 case TARGET_NR_bind:
9302 return do_bind(arg1, arg2, arg3);
9303 #endif
9304 #ifdef TARGET_NR_connect
9305 case TARGET_NR_connect:
9306 return do_connect(arg1, arg2, arg3);
9307 #endif
9308 #ifdef TARGET_NR_getpeername
9309 case TARGET_NR_getpeername:
9310 return do_getpeername(arg1, arg2, arg3);
9311 #endif
9312 #ifdef TARGET_NR_getsockname
9313 case TARGET_NR_getsockname:
9314 return do_getsockname(arg1, arg2, arg3);
9315 #endif
9316 #ifdef TARGET_NR_getsockopt
9317 case TARGET_NR_getsockopt:
9318 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
9319 #endif
9320 #ifdef TARGET_NR_listen
9321 case TARGET_NR_listen:
9322 return get_errno(listen(arg1, arg2));
9323 #endif
9324 #ifdef TARGET_NR_recv
9325 case TARGET_NR_recv:
9326 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
9327 #endif
9328 #ifdef TARGET_NR_recvfrom
9329 case TARGET_NR_recvfrom:
9330 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
9331 #endif
9332 #ifdef TARGET_NR_recvmsg
9333 case TARGET_NR_recvmsg:
9334 return do_sendrecvmsg(arg1, arg2, arg3, 0);
9335 #endif
9336 #ifdef TARGET_NR_send
9337 case TARGET_NR_send:
9338 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
9339 #endif
9340 #ifdef TARGET_NR_sendmsg
9341 case TARGET_NR_sendmsg:
9342 return do_sendrecvmsg(arg1, arg2, arg3, 1);
9343 #endif
9344 #ifdef TARGET_NR_sendmmsg
9345 case TARGET_NR_sendmmsg:
9346 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
9347 #endif
9348 #ifdef TARGET_NR_recvmmsg
9349 case TARGET_NR_recvmmsg:
9350 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
9351 #endif
9352 #ifdef TARGET_NR_sendto
9353 case TARGET_NR_sendto:
9354 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
9355 #endif
9356 #ifdef TARGET_NR_shutdown
9357 case TARGET_NR_shutdown:
9358 return get_errno(shutdown(arg1, arg2));
9359 #endif
9360 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
9361 case TARGET_NR_getrandom:
9362 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
9363 if (!p) {
9364 return -TARGET_EFAULT;
9365 }
9366 ret = get_errno(getrandom(p, arg2, arg3));
9367 unlock_user(p, arg1, ret);
9368 return ret;
9369 #endif
9370 #ifdef TARGET_NR_socket
9371 case TARGET_NR_socket:
9372 return do_socket(arg1, arg2, arg3);
9373 #endif
9374 #ifdef TARGET_NR_socketpair
9375 case TARGET_NR_socketpair:
9376 return do_socketpair(arg1, arg2, arg3, arg4);
9377 #endif
9378 #ifdef TARGET_NR_setsockopt
9379 case TARGET_NR_setsockopt:
9380 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
9381 #endif
9382 #if defined(TARGET_NR_syslog)
9383 case TARGET_NR_syslog:
9384 {
9385 int len = arg2;
9386
9387 switch (arg1) {
9388 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
9389 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
9390 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
9391 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
9392 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
9393 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
9394 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
9395 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
9396 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
9397 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
9398 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
9399 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
9400 {
9401 if (len < 0) {
9402 return -TARGET_EINVAL;
9403 }
9404 if (len == 0) {
9405 return 0;
9406 }
9407 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9408 if (!p) {
9409 return -TARGET_EFAULT;
9410 }
9411 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
9412 unlock_user(p, arg2, arg3);
9413 }
9414 return ret;
9415 default:
9416 return -TARGET_EINVAL;
9417 }
9418 }
9419 break;
9420 #endif
9421 case TARGET_NR_setitimer:
9422 {
9423 struct itimerval value, ovalue, *pvalue;
9424
9425 if (arg2) {
9426 pvalue = &value;
9427 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
9428 || copy_from_user_timeval(&pvalue->it_value,
9429 arg2 + sizeof(struct target_timeval)))
9430 return -TARGET_EFAULT;
9431 } else {
9432 pvalue = NULL;
9433 }
9434 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
9435 if (!is_error(ret) && arg3) {
9436 if (copy_to_user_timeval(arg3,
9437 &ovalue.it_interval)
9438 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
9439 &ovalue.it_value))
9440 return -TARGET_EFAULT;
9441 }
9442 }
9443 return ret;
9444 case TARGET_NR_getitimer:
9445 {
9446 struct itimerval value;
9447
9448 ret = get_errno(getitimer(arg1, &value));
9449 if (!is_error(ret) && arg2) {
9450 if (copy_to_user_timeval(arg2,
9451 &value.it_interval)
9452 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
9453 &value.it_value))
9454 return -TARGET_EFAULT;
9455 }
9456 }
9457 return ret;
9458 #ifdef TARGET_NR_stat
9459 case TARGET_NR_stat:
9460 if (!(p = lock_user_string(arg1))) {
9461 return -TARGET_EFAULT;
9462 }
9463 ret = get_errno(stat(path(p), &st));
9464 unlock_user(p, arg1, 0);
9465 goto do_stat;
9466 #endif
9467 #ifdef TARGET_NR_lstat
9468 case TARGET_NR_lstat:
9469 if (!(p = lock_user_string(arg1))) {
9470 return -TARGET_EFAULT;
9471 }
9472 ret = get_errno(lstat(path(p), &st));
9473 unlock_user(p, arg1, 0);
9474 goto do_stat;
9475 #endif
9476 #ifdef TARGET_NR_fstat
9477 case TARGET_NR_fstat:
9478 {
9479 ret = get_errno(fstat(arg1, &st));
9480 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
9481 do_stat:
9482 #endif
9483 if (!is_error(ret)) {
9484 struct target_stat *target_st;
9485
9486 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
9487 return -TARGET_EFAULT;
9488 memset(target_st, 0, sizeof(*target_st));
9489 __put_user(st.st_dev, &target_st->st_dev);
9490 __put_user(st.st_ino, &target_st->st_ino);
9491 __put_user(st.st_mode, &target_st->st_mode);
9492 __put_user(st.st_uid, &target_st->st_uid);
9493 __put_user(st.st_gid, &target_st->st_gid);
9494 __put_user(st.st_nlink, &target_st->st_nlink);
9495 __put_user(st.st_rdev, &target_st->st_rdev);
9496 __put_user(st.st_size, &target_st->st_size);
9497 __put_user(st.st_blksize, &target_st->st_blksize);
9498 __put_user(st.st_blocks, &target_st->st_blocks);
9499 __put_user(st.st_atime, &target_st->target_st_atime);
9500 __put_user(st.st_mtime, &target_st->target_st_mtime);
9501 __put_user(st.st_ctime, &target_st->target_st_ctime);
9502 #if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \
9503 defined(TARGET_STAT_HAVE_NSEC)
9504 __put_user(st.st_atim.tv_nsec,
9505 &target_st->target_st_atime_nsec);
9506 __put_user(st.st_mtim.tv_nsec,
9507 &target_st->target_st_mtime_nsec);
9508 __put_user(st.st_ctim.tv_nsec,
9509 &target_st->target_st_ctime_nsec);
9510 #endif
9511 unlock_user_struct(target_st, arg2, 1);
9512 }
9513 }
9514 return ret;
9515 #endif
9516 case TARGET_NR_vhangup:
9517 return get_errno(vhangup());
9518 #ifdef TARGET_NR_syscall
9519 case TARGET_NR_syscall:
9520 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
9521 arg6, arg7, arg8, 0);
9522 #endif
9523 #if defined(TARGET_NR_wait4)
9524 case TARGET_NR_wait4:
9525 {
9526 int status;
9527 abi_long status_ptr = arg2;
9528 struct rusage rusage, *rusage_ptr;
9529 abi_ulong target_rusage = arg4;
9530 abi_long rusage_err;
9531 if (target_rusage)
9532 rusage_ptr = &rusage;
9533 else
9534 rusage_ptr = NULL;
9535 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
9536 if (!is_error(ret)) {
9537 if (status_ptr && ret) {
9538 status = host_to_target_waitstatus(status);
9539 if (put_user_s32(status, status_ptr))
9540 return -TARGET_EFAULT;
9541 }
9542 if (target_rusage) {
9543 rusage_err = host_to_target_rusage(target_rusage, &rusage);
9544 if (rusage_err) {
9545 ret = rusage_err;
9546 }
9547 }
9548 }
9549 }
9550 return ret;
9551 #endif
9552 #ifdef TARGET_NR_swapoff
9553 case TARGET_NR_swapoff:
9554 if (!(p = lock_user_string(arg1)))
9555 return -TARGET_EFAULT;
9556 ret = get_errno(swapoff(p));
9557 unlock_user(p, arg1, 0);
9558 return ret;
9559 #endif
9560 case TARGET_NR_sysinfo:
9561 {
9562 struct target_sysinfo *target_value;
9563 struct sysinfo value;
9564 ret = get_errno(sysinfo(&value));
9565 if (!is_error(ret) && arg1)
9566 {
9567 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
9568 return -TARGET_EFAULT;
9569 __put_user(value.uptime, &target_value->uptime);
9570 __put_user(value.loads[0], &target_value->loads[0]);
9571 __put_user(value.loads[1], &target_value->loads[1]);
9572 __put_user(value.loads[2], &target_value->loads[2]);
9573 __put_user(value.totalram, &target_value->totalram);
9574 __put_user(value.freeram, &target_value->freeram);
9575 __put_user(value.sharedram, &target_value->sharedram);
9576 __put_user(value.bufferram, &target_value->bufferram);
9577 __put_user(value.totalswap, &target_value->totalswap);
9578 __put_user(value.freeswap, &target_value->freeswap);
9579 __put_user(value.procs, &target_value->procs);
9580 __put_user(value.totalhigh, &target_value->totalhigh);
9581 __put_user(value.freehigh, &target_value->freehigh);
9582 __put_user(value.mem_unit, &target_value->mem_unit);
9583 unlock_user_struct(target_value, arg1, 1);
9584 }
9585 }
9586 return ret;
9587 #ifdef TARGET_NR_ipc
9588 case TARGET_NR_ipc:
9589 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
9590 #endif
9591 #ifdef TARGET_NR_semget
9592 case TARGET_NR_semget:
9593 return get_errno(semget(arg1, arg2, arg3));
9594 #endif
9595 #ifdef TARGET_NR_semop
9596 case TARGET_NR_semop:
9597 return do_semop(arg1, arg2, arg3);
9598 #endif
9599 #ifdef TARGET_NR_semctl
9600 case TARGET_NR_semctl:
9601 return do_semctl(arg1, arg2, arg3, arg4);
9602 #endif
9603 #ifdef TARGET_NR_msgctl
9604 case TARGET_NR_msgctl:
9605 return do_msgctl(arg1, arg2, arg3);
9606 #endif
9607 #ifdef TARGET_NR_msgget
9608 case TARGET_NR_msgget:
9609 return get_errno(msgget(arg1, arg2));
9610 #endif
9611 #ifdef TARGET_NR_msgrcv
9612 case TARGET_NR_msgrcv:
9613 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
9614 #endif
9615 #ifdef TARGET_NR_msgsnd
9616 case TARGET_NR_msgsnd:
9617 return do_msgsnd(arg1, arg2, arg3, arg4);
9618 #endif
9619 #ifdef TARGET_NR_shmget
9620 case TARGET_NR_shmget:
9621 return get_errno(shmget(arg1, arg2, arg3));
9622 #endif
9623 #ifdef TARGET_NR_shmctl
9624 case TARGET_NR_shmctl:
9625 return do_shmctl(arg1, arg2, arg3);
9626 #endif
9627 #ifdef TARGET_NR_shmat
9628 case TARGET_NR_shmat:
9629 return do_shmat(cpu_env, arg1, arg2, arg3);
9630 #endif
9631 #ifdef TARGET_NR_shmdt
9632 case TARGET_NR_shmdt:
9633 return do_shmdt(arg1);
9634 #endif
9635 case TARGET_NR_fsync:
9636 return get_errno(fsync(arg1));
9637 case TARGET_NR_clone:
9638 /* Linux manages to have three different orderings for its
9639 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
9640 * match the kernel's CONFIG_CLONE_* settings.
9641 * Microblaze is further special in that it uses a sixth
9642 * implicit argument to clone for the TLS pointer.
9643 */
9644 #if defined(TARGET_MICROBLAZE)
9645 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
9646 #elif defined(TARGET_CLONE_BACKWARDS)
9647 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
9648 #elif defined(TARGET_CLONE_BACKWARDS2)
9649 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
9650 #else
9651 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
9652 #endif
9653 return ret;
9654 #ifdef __NR_exit_group
9655 /* new thread calls */
9656 case TARGET_NR_exit_group:
9657 preexit_cleanup(cpu_env, arg1);
9658 return get_errno(exit_group(arg1));
9659 #endif
9660 case TARGET_NR_setdomainname:
9661 if (!(p = lock_user_string(arg1)))
9662 return -TARGET_EFAULT;
9663 ret = get_errno(setdomainname(p, arg2));
9664 unlock_user(p, arg1, 0);
9665 return ret;
9666 case TARGET_NR_uname:
9667 /* no need to transcode because we use the linux syscall */
9668 {
9669 struct new_utsname * buf;
9670
9671 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
9672 return -TARGET_EFAULT;
9673 ret = get_errno(sys_uname(buf));
9674 if (!is_error(ret)) {
9675 /* Overwrite the native machine name with whatever is being
9676 emulated. */
9677 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
9678 sizeof(buf->machine));
9679 /* Allow the user to override the reported release. */
9680 if (qemu_uname_release && *qemu_uname_release) {
9681 g_strlcpy(buf->release, qemu_uname_release,
9682 sizeof(buf->release));
9683 }
9684 }
9685 unlock_user_struct(buf, arg1, 1);
9686 }
9687 return ret;
9688 #ifdef TARGET_I386
9689 case TARGET_NR_modify_ldt:
9690 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
9691 #if !defined(TARGET_X86_64)
9692 case TARGET_NR_vm86:
9693 return do_vm86(cpu_env, arg1, arg2);
9694 #endif
9695 #endif
9696 #if defined(TARGET_NR_adjtimex)
9697 case TARGET_NR_adjtimex:
9698 {
9699 struct timex host_buf;
9700
9701 if (target_to_host_timex(&host_buf, arg1) != 0) {
9702 return -TARGET_EFAULT;
9703 }
9704 ret = get_errno(adjtimex(&host_buf));
9705 if (!is_error(ret)) {
9706 if (host_to_target_timex(arg1, &host_buf) != 0) {
9707 return -TARGET_EFAULT;
9708 }
9709 }
9710 }
9711 return ret;
9712 #endif
9713 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
9714 case TARGET_NR_clock_adjtime:
9715 {
9716 struct timex htx, *phtx = &htx;
9717
9718 if (target_to_host_timex(phtx, arg2) != 0) {
9719 return -TARGET_EFAULT;
9720 }
9721 ret = get_errno(clock_adjtime(arg1, phtx));
9722 if (!is_error(ret) && phtx) {
9723 if (host_to_target_timex(arg2, phtx) != 0) {
9724 return -TARGET_EFAULT;
9725 }
9726 }
9727 }
9728 return ret;
9729 #endif
9730 case TARGET_NR_getpgid:
9731 return get_errno(getpgid(arg1));
9732 case TARGET_NR_fchdir:
9733 return get_errno(fchdir(arg1));
9734 case TARGET_NR_personality:
9735 return get_errno(personality(arg1));
9736 #ifdef TARGET_NR__llseek /* Not on alpha */
9737 case TARGET_NR__llseek:
9738 {
9739 int64_t res;
9740 #if !defined(__NR_llseek)
9741 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
9742 if (res == -1) {
9743 ret = get_errno(res);
9744 } else {
9745 ret = 0;
9746 }
9747 #else
9748 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
9749 #endif
9750 if ((ret == 0) && put_user_s64(res, arg4)) {
9751 return -TARGET_EFAULT;
9752 }
9753 }
9754 return ret;
9755 #endif
9756 #ifdef TARGET_NR_getdents
9757 case TARGET_NR_getdents:
9758 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
9759 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
9760 {
9761 struct target_dirent *target_dirp;
9762 struct linux_dirent *dirp;
9763 abi_long count = arg3;
9764
9765 dirp = g_try_malloc(count);
9766 if (!dirp) {
9767 return -TARGET_ENOMEM;
9768 }
9769
9770 ret = get_errno(sys_getdents(arg1, dirp, count));
9771 if (!is_error(ret)) {
9772 struct linux_dirent *de;
9773 struct target_dirent *tde;
9774 int len = ret;
9775 int reclen, treclen;
9776 int count1, tnamelen;
9777
9778 count1 = 0;
9779 de = dirp;
9780 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9781 return -TARGET_EFAULT;
9782 tde = target_dirp;
9783 while (len > 0) {
9784 reclen = de->d_reclen;
9785 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
9786 assert(tnamelen >= 0);
9787 treclen = tnamelen + offsetof(struct target_dirent, d_name);
9788 assert(count1 + treclen <= count);
9789 tde->d_reclen = tswap16(treclen);
9790 tde->d_ino = tswapal(de->d_ino);
9791 tde->d_off = tswapal(de->d_off);
9792 memcpy(tde->d_name, de->d_name, tnamelen);
9793 de = (struct linux_dirent *)((char *)de + reclen);
9794 len -= reclen;
9795 tde = (struct target_dirent *)((char *)tde + treclen);
9796 count1 += treclen;
9797 }
9798 ret = count1;
9799 unlock_user(target_dirp, arg2, ret);
9800 }
9801 g_free(dirp);
9802 }
9803 #else
9804 {
9805 struct linux_dirent *dirp;
9806 abi_long count = arg3;
9807
9808 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9809 return -TARGET_EFAULT;
9810 ret = get_errno(sys_getdents(arg1, dirp, count));
9811 if (!is_error(ret)) {
9812 struct linux_dirent *de;
9813 int len = ret;
9814 int reclen;
9815 de = dirp;
9816 while (len > 0) {
9817 reclen = de->d_reclen;
9818 if (reclen > len)
9819 break;
9820 de->d_reclen = tswap16(reclen);
9821 tswapls(&de->d_ino);
9822 tswapls(&de->d_off);
9823 de = (struct linux_dirent *)((char *)de + reclen);
9824 len -= reclen;
9825 }
9826 }
9827 unlock_user(dirp, arg2, ret);
9828 }
9829 #endif
9830 #else
9831 /* Implement getdents in terms of getdents64 */
9832 {
9833 struct linux_dirent64 *dirp;
9834 abi_long count = arg3;
9835
9836 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
9837 if (!dirp) {
9838 return -TARGET_EFAULT;
9839 }
9840 ret = get_errno(sys_getdents64(arg1, dirp, count));
9841 if (!is_error(ret)) {
9842 /* Convert the dirent64 structs to target dirent. We do this
9843 * in-place, since we can guarantee that a target_dirent is no
9844 * larger than a dirent64; however this means we have to be
9845 * careful to read everything before writing in the new format.
9846 */
9847 struct linux_dirent64 *de;
9848 struct target_dirent *tde;
9849 int len = ret;
9850 int tlen = 0;
9851
9852 de = dirp;
9853 tde = (struct target_dirent *)dirp;
9854 while (len > 0) {
9855 int namelen, treclen;
9856 int reclen = de->d_reclen;
9857 uint64_t ino = de->d_ino;
9858 int64_t off = de->d_off;
9859 uint8_t type = de->d_type;
9860
9861 namelen = strlen(de->d_name);
9862 treclen = offsetof(struct target_dirent, d_name)
9863 + namelen + 2;
9864 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
9865
9866 memmove(tde->d_name, de->d_name, namelen + 1);
9867 tde->d_ino = tswapal(ino);
9868 tde->d_off = tswapal(off);
9869 tde->d_reclen = tswap16(treclen);
9870 /* The target_dirent type is in what was formerly a padding
9871 * byte at the end of the structure:
9872 */
9873 *(((char *)tde) + treclen - 1) = type;
9874
9875 de = (struct linux_dirent64 *)((char *)de + reclen);
9876 tde = (struct target_dirent *)((char *)tde + treclen);
9877 len -= reclen;
9878 tlen += treclen;
9879 }
9880 ret = tlen;
9881 }
9882 unlock_user(dirp, arg2, ret);
9883 }
9884 #endif
9885 return ret;
9886 #endif /* TARGET_NR_getdents */
9887 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
9888 case TARGET_NR_getdents64:
9889 {
9890 struct linux_dirent64 *dirp;
9891 abi_long count = arg3;
9892 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9893 return -TARGET_EFAULT;
9894 ret = get_errno(sys_getdents64(arg1, dirp, count));
9895 if (!is_error(ret)) {
9896 struct linux_dirent64 *de;
9897 int len = ret;
9898 int reclen;
9899 de = dirp;
9900 while (len > 0) {
9901 reclen = de->d_reclen;
9902 if (reclen > len)
9903 break;
9904 de->d_reclen = tswap16(reclen);
9905 tswap64s((uint64_t *)&de->d_ino);
9906 tswap64s((uint64_t *)&de->d_off);
9907 de = (struct linux_dirent64 *)((char *)de + reclen);
9908 len -= reclen;
9909 }
9910 }
9911 unlock_user(dirp, arg2, ret);
9912 }
9913 return ret;
9914 #endif /* TARGET_NR_getdents64 */
9915 #if defined(TARGET_NR__newselect)
9916 case TARGET_NR__newselect:
9917 return do_select(arg1, arg2, arg3, arg4, arg5);
9918 #endif
9919 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll)
9920 # ifdef TARGET_NR_poll
9921 case TARGET_NR_poll:
9922 # endif
9923 # ifdef TARGET_NR_ppoll
9924 case TARGET_NR_ppoll:
9925 # endif
9926 {
9927 struct target_pollfd *target_pfd;
9928 unsigned int nfds = arg2;
9929 struct pollfd *pfd;
9930 unsigned int i;
9931
9932 pfd = NULL;
9933 target_pfd = NULL;
9934 if (nfds) {
9935 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
9936 return -TARGET_EINVAL;
9937 }
9938
9939 target_pfd = lock_user(VERIFY_WRITE, arg1,
9940 sizeof(struct target_pollfd) * nfds, 1);
9941 if (!target_pfd) {
9942 return -TARGET_EFAULT;
9943 }
9944
9945 pfd = alloca(sizeof(struct pollfd) * nfds);
9946 for (i = 0; i < nfds; i++) {
9947 pfd[i].fd = tswap32(target_pfd[i].fd);
9948 pfd[i].events = tswap16(target_pfd[i].events);
9949 }
9950 }
9951
9952 switch (num) {
9953 # ifdef TARGET_NR_ppoll
9954 case TARGET_NR_ppoll:
9955 {
9956 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
9957 target_sigset_t *target_set;
9958 sigset_t _set, *set = &_set;
9959
9960 if (arg3) {
9961 if (target_to_host_timespec(timeout_ts, arg3)) {
9962 unlock_user(target_pfd, arg1, 0);
9963 return -TARGET_EFAULT;
9964 }
9965 } else {
9966 timeout_ts = NULL;
9967 }
9968
9969 if (arg4) {
9970 if (arg5 != sizeof(target_sigset_t)) {
9971 unlock_user(target_pfd, arg1, 0);
9972 return -TARGET_EINVAL;
9973 }
9974
9975 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1);
9976 if (!target_set) {
9977 unlock_user(target_pfd, arg1, 0);
9978 return -TARGET_EFAULT;
9979 }
9980 target_to_host_sigset(set, target_set);
9981 } else {
9982 set = NULL;
9983 }
9984
9985 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
9986 set, SIGSET_T_SIZE));
9987
9988 if (!is_error(ret) && arg3) {
9989 host_to_target_timespec(arg3, timeout_ts);
9990 }
9991 if (arg4) {
9992 unlock_user(target_set, arg4, 0);
9993 }
9994 break;
9995 }
9996 # endif
9997 # ifdef TARGET_NR_poll
9998 case TARGET_NR_poll:
9999 {
10000 struct timespec ts, *pts;
10001
10002 if (arg3 >= 0) {
10003 /* Convert ms to secs, ns */
10004 ts.tv_sec = arg3 / 1000;
10005 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
10006 pts = &ts;
10007 } else {
10008 /* -ve poll() timeout means "infinite" */
10009 pts = NULL;
10010 }
10011 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
10012 break;
10013 }
10014 # endif
10015 default:
10016 g_assert_not_reached();
10017 }
10018
10019 if (!is_error(ret)) {
10020 for(i = 0; i < nfds; i++) {
10021 target_pfd[i].revents = tswap16(pfd[i].revents);
10022 }
10023 }
10024 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
10025 }
10026 return ret;
10027 #endif
10028 case TARGET_NR_flock:
10029 /* NOTE: the flock constant seems to be the same for every
10030 Linux platform */
10031 return get_errno(safe_flock(arg1, arg2));
10032 case TARGET_NR_readv:
10033 {
10034 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10035 if (vec != NULL) {
10036 ret = get_errno(safe_readv(arg1, vec, arg3));
10037 unlock_iovec(vec, arg2, arg3, 1);
10038 } else {
10039 ret = -host_to_target_errno(errno);
10040 }
10041 }
10042 return ret;
10043 case TARGET_NR_writev:
10044 {
10045 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10046 if (vec != NULL) {
10047 ret = get_errno(safe_writev(arg1, vec, arg3));
10048 unlock_iovec(vec, arg2, arg3, 0);
10049 } else {
10050 ret = -host_to_target_errno(errno);
10051 }
10052 }
10053 return ret;
10054 #if defined(TARGET_NR_preadv)
10055 case TARGET_NR_preadv:
10056 {
10057 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
10058 if (vec != NULL) {
10059 unsigned long low, high;
10060
10061 target_to_host_low_high(arg4, arg5, &low, &high);
10062 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
10063 unlock_iovec(vec, arg2, arg3, 1);
10064 } else {
10065 ret = -host_to_target_errno(errno);
10066 }
10067 }
10068 return ret;
10069 #endif
10070 #if defined(TARGET_NR_pwritev)
10071 case TARGET_NR_pwritev:
10072 {
10073 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
10074 if (vec != NULL) {
10075 unsigned long low, high;
10076
10077 target_to_host_low_high(arg4, arg5, &low, &high);
10078 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
10079 unlock_iovec(vec, arg2, arg3, 0);
10080 } else {
10081 ret = -host_to_target_errno(errno);
10082 }
10083 }
10084 return ret;
10085 #endif
10086 case TARGET_NR_getsid:
10087 return get_errno(getsid(arg1));
10088 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
10089 case TARGET_NR_fdatasync:
10090 return get_errno(fdatasync(arg1));
10091 #endif
10092 #ifdef TARGET_NR__sysctl
10093 case TARGET_NR__sysctl:
10094 /* We don't implement this, but ENOTDIR is always a safe
10095 return value. */
10096 return -TARGET_ENOTDIR;
10097 #endif
10098 case TARGET_NR_sched_getaffinity:
10099 {
10100 unsigned int mask_size;
10101 unsigned long *mask;
10102
10103 /*
10104 * sched_getaffinity needs multiples of ulong, so need to take
10105 * care of mismatches between target ulong and host ulong sizes.
10106 */
10107 if (arg2 & (sizeof(abi_ulong) - 1)) {
10108 return -TARGET_EINVAL;
10109 }
10110 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10111
10112 mask = alloca(mask_size);
10113 memset(mask, 0, mask_size);
10114 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
10115
10116 if (!is_error(ret)) {
10117 if (ret > arg2) {
10118 /* More data returned than the caller's buffer will fit.
10119 * This only happens if sizeof(abi_long) < sizeof(long)
10120 * and the caller passed us a buffer holding an odd number
10121 * of abi_longs. If the host kernel is actually using the
10122 * extra 4 bytes then fail EINVAL; otherwise we can just
10123 * ignore them and only copy the interesting part.
10124 */
10125 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
10126 if (numcpus > arg2 * 8) {
10127 return -TARGET_EINVAL;
10128 }
10129 ret = arg2;
10130 }
10131
10132 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
10133 return -TARGET_EFAULT;
10134 }
10135 }
10136 }
10137 return ret;
10138 case TARGET_NR_sched_setaffinity:
10139 {
10140 unsigned int mask_size;
10141 unsigned long *mask;
10142
10143 /*
10144 * sched_setaffinity needs multiples of ulong, so need to take
10145 * care of mismatches between target ulong and host ulong sizes.
10146 */
10147 if (arg2 & (sizeof(abi_ulong) - 1)) {
10148 return -TARGET_EINVAL;
10149 }
10150 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
10151 mask = alloca(mask_size);
10152
10153 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
10154 if (ret) {
10155 return ret;
10156 }
10157
10158 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
10159 }
10160 case TARGET_NR_getcpu:
10161 {
10162 unsigned cpu, node;
10163 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
10164 arg2 ? &node : NULL,
10165 NULL));
10166 if (is_error(ret)) {
10167 return ret;
10168 }
10169 if (arg1 && put_user_u32(cpu, arg1)) {
10170 return -TARGET_EFAULT;
10171 }
10172 if (arg2 && put_user_u32(node, arg2)) {
10173 return -TARGET_EFAULT;
10174 }
10175 }
10176 return ret;
10177 case TARGET_NR_sched_setparam:
10178 {
10179 struct sched_param *target_schp;
10180 struct sched_param schp;
10181
10182 if (arg2 == 0) {
10183 return -TARGET_EINVAL;
10184 }
10185 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
10186 return -TARGET_EFAULT;
10187 schp.sched_priority = tswap32(target_schp->sched_priority);
10188 unlock_user_struct(target_schp, arg2, 0);
10189 return get_errno(sched_setparam(arg1, &schp));
10190 }
10191 case TARGET_NR_sched_getparam:
10192 {
10193 struct sched_param *target_schp;
10194 struct sched_param schp;
10195
10196 if (arg2 == 0) {
10197 return -TARGET_EINVAL;
10198 }
10199 ret = get_errno(sched_getparam(arg1, &schp));
10200 if (!is_error(ret)) {
10201 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
10202 return -TARGET_EFAULT;
10203 target_schp->sched_priority = tswap32(schp.sched_priority);
10204 unlock_user_struct(target_schp, arg2, 1);
10205 }
10206 }
10207 return ret;
10208 case TARGET_NR_sched_setscheduler:
10209 {
10210 struct sched_param *target_schp;
10211 struct sched_param schp;
10212 if (arg3 == 0) {
10213 return -TARGET_EINVAL;
10214 }
10215 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
10216 return -TARGET_EFAULT;
10217 schp.sched_priority = tswap32(target_schp->sched_priority);
10218 unlock_user_struct(target_schp, arg3, 0);
10219 return get_errno(sched_setscheduler(arg1, arg2, &schp));
10220 }
10221 case TARGET_NR_sched_getscheduler:
10222 return get_errno(sched_getscheduler(arg1));
10223 case TARGET_NR_sched_yield:
10224 return get_errno(sched_yield());
10225 case TARGET_NR_sched_get_priority_max:
10226 return get_errno(sched_get_priority_max(arg1));
10227 case TARGET_NR_sched_get_priority_min:
10228 return get_errno(sched_get_priority_min(arg1));
10229 #ifdef TARGET_NR_sched_rr_get_interval
10230 case TARGET_NR_sched_rr_get_interval:
10231 {
10232 struct timespec ts;
10233 ret = get_errno(sched_rr_get_interval(arg1, &ts));
10234 if (!is_error(ret)) {
10235 ret = host_to_target_timespec(arg2, &ts);
10236 }
10237 }
10238 return ret;
10239 #endif
10240 #if defined(TARGET_NR_nanosleep)
10241 case TARGET_NR_nanosleep:
10242 {
10243 struct timespec req, rem;
10244 target_to_host_timespec(&req, arg1);
10245 ret = get_errno(safe_nanosleep(&req, &rem));
10246 if (is_error(ret) && arg2) {
10247 host_to_target_timespec(arg2, &rem);
10248 }
10249 }
10250 return ret;
10251 #endif
10252 case TARGET_NR_prctl:
10253 switch (arg1) {
10254 case PR_GET_PDEATHSIG:
10255 {
10256 int deathsig;
10257 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
10258 if (!is_error(ret) && arg2
10259 && put_user_ual(deathsig, arg2)) {
10260 return -TARGET_EFAULT;
10261 }
10262 return ret;
10263 }
10264 #ifdef PR_GET_NAME
10265 case PR_GET_NAME:
10266 {
10267 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
10268 if (!name) {
10269 return -TARGET_EFAULT;
10270 }
10271 ret = get_errno(prctl(arg1, (unsigned long)name,
10272 arg3, arg4, arg5));
10273 unlock_user(name, arg2, 16);
10274 return ret;
10275 }
10276 case PR_SET_NAME:
10277 {
10278 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
10279 if (!name) {
10280 return -TARGET_EFAULT;
10281 }
10282 ret = get_errno(prctl(arg1, (unsigned long)name,
10283 arg3, arg4, arg5));
10284 unlock_user(name, arg2, 0);
10285 return ret;
10286 }
10287 #endif
10288 #ifdef TARGET_MIPS
10289 case TARGET_PR_GET_FP_MODE:
10290 {
10291 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
10292 ret = 0;
10293 if (env->CP0_Status & (1 << CP0St_FR)) {
10294 ret |= TARGET_PR_FP_MODE_FR;
10295 }
10296 if (env->CP0_Config5 & (1 << CP0C5_FRE)) {
10297 ret |= TARGET_PR_FP_MODE_FRE;
10298 }
10299 return ret;
10300 }
10301 case TARGET_PR_SET_FP_MODE:
10302 {
10303 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
10304 bool old_fr = env->CP0_Status & (1 << CP0St_FR);
10305 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE);
10306 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR;
10307 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE;
10308
10309 const unsigned int known_bits = TARGET_PR_FP_MODE_FR |
10310 TARGET_PR_FP_MODE_FRE;
10311
10312 /* If nothing to change, return right away, successfully. */
10313 if (old_fr == new_fr && old_fre == new_fre) {
10314 return 0;
10315 }
10316 /* Check the value is valid */
10317 if (arg2 & ~known_bits) {
10318 return -TARGET_EOPNOTSUPP;
10319 }
10320 /* Setting FRE without FR is not supported. */
10321 if (new_fre && !new_fr) {
10322 return -TARGET_EOPNOTSUPP;
10323 }
10324 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) {
10325 /* FR1 is not supported */
10326 return -TARGET_EOPNOTSUPP;
10327 }
10328 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64))
10329 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) {
10330 /* cannot set FR=0 */
10331 return -TARGET_EOPNOTSUPP;
10332 }
10333 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) {
10334 /* Cannot set FRE=1 */
10335 return -TARGET_EOPNOTSUPP;
10336 }
10337
10338 int i;
10339 fpr_t *fpr = env->active_fpu.fpr;
10340 for (i = 0; i < 32 ; i += 2) {
10341 if (!old_fr && new_fr) {
10342 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX];
10343 } else if (old_fr && !new_fr) {
10344 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX];
10345 }
10346 }
10347
10348 if (new_fr) {
10349 env->CP0_Status |= (1 << CP0St_FR);
10350 env->hflags |= MIPS_HFLAG_F64;
10351 } else {
10352 env->CP0_Status &= ~(1 << CP0St_FR);
10353 env->hflags &= ~MIPS_HFLAG_F64;
10354 }
10355 if (new_fre) {
10356 env->CP0_Config5 |= (1 << CP0C5_FRE);
10357 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) {
10358 env->hflags |= MIPS_HFLAG_FRE;
10359 }
10360 } else {
10361 env->CP0_Config5 &= ~(1 << CP0C5_FRE);
10362 env->hflags &= ~MIPS_HFLAG_FRE;
10363 }
10364
10365 return 0;
10366 }
10367 #endif /* MIPS */
10368 #ifdef TARGET_AARCH64
10369 case TARGET_PR_SVE_SET_VL:
10370 /*
10371 * We cannot support either PR_SVE_SET_VL_ONEXEC or
10372 * PR_SVE_VL_INHERIT. Note the kernel definition
10373 * of sve_vl_valid allows for VQ=512, i.e. VL=8192,
10374 * even though the current architectural maximum is VQ=16.
10375 */
10376 ret = -TARGET_EINVAL;
10377 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env))
10378 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
10379 CPUARMState *env = cpu_env;
10380 ARMCPU *cpu = env_archcpu(env);
10381 uint32_t vq, old_vq;
10382
10383 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1;
10384 vq = MAX(arg2 / 16, 1);
10385 vq = MIN(vq, cpu->sve_max_vq);
10386
10387 if (vq < old_vq) {
10388 aarch64_sve_narrow_vq(env, vq);
10389 }
10390 env->vfp.zcr_el[1] = vq - 1;
10391 arm_rebuild_hflags(env);
10392 ret = vq * 16;
10393 }
10394 return ret;
10395 case TARGET_PR_SVE_GET_VL:
10396 ret = -TARGET_EINVAL;
10397 {
10398 ARMCPU *cpu = env_archcpu(cpu_env);
10399 if (cpu_isar_feature(aa64_sve, cpu)) {
10400 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16;
10401 }
10402 }
10403 return ret;
10404 case TARGET_PR_PAC_RESET_KEYS:
10405 {
10406 CPUARMState *env = cpu_env;
10407 ARMCPU *cpu = env_archcpu(env);
10408
10409 if (arg3 || arg4 || arg5) {
10410 return -TARGET_EINVAL;
10411 }
10412 if (cpu_isar_feature(aa64_pauth, cpu)) {
10413 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY |
10414 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY |
10415 TARGET_PR_PAC_APGAKEY);
10416 int ret = 0;
10417 Error *err = NULL;
10418
10419 if (arg2 == 0) {
10420 arg2 = all;
10421 } else if (arg2 & ~all) {
10422 return -TARGET_EINVAL;
10423 }
10424 if (arg2 & TARGET_PR_PAC_APIAKEY) {
10425 ret |= qemu_guest_getrandom(&env->keys.apia,
10426 sizeof(ARMPACKey), &err);
10427 }
10428 if (arg2 & TARGET_PR_PAC_APIBKEY) {
10429 ret |= qemu_guest_getrandom(&env->keys.apib,
10430 sizeof(ARMPACKey), &err);
10431 }
10432 if (arg2 & TARGET_PR_PAC_APDAKEY) {
10433 ret |= qemu_guest_getrandom(&env->keys.apda,
10434 sizeof(ARMPACKey), &err);
10435 }
10436 if (arg2 & TARGET_PR_PAC_APDBKEY) {
10437 ret |= qemu_guest_getrandom(&env->keys.apdb,
10438 sizeof(ARMPACKey), &err);
10439 }
10440 if (arg2 & TARGET_PR_PAC_APGAKEY) {
10441 ret |= qemu_guest_getrandom(&env->keys.apga,
10442 sizeof(ARMPACKey), &err);
10443 }
10444 if (ret != 0) {
10445 /*
10446 * Some unknown failure in the crypto. The best
10447 * we can do is log it and fail the syscall.
10448 * The real syscall cannot fail this way.
10449 */
10450 qemu_log_mask(LOG_UNIMP,
10451 "PR_PAC_RESET_KEYS: Crypto failure: %s",
10452 error_get_pretty(err));
10453 error_free(err);
10454 return -TARGET_EIO;
10455 }
10456 return 0;
10457 }
10458 }
10459 return -TARGET_EINVAL;
10460 #endif /* AARCH64 */
10461 case PR_GET_SECCOMP:
10462 case PR_SET_SECCOMP:
10463 /* Disable seccomp to prevent the target disabling syscalls we
10464 * need. */
10465 return -TARGET_EINVAL;
10466 default:
10467 /* Most prctl options have no pointer arguments */
10468 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
10469 }
10470 break;
10471 #ifdef TARGET_NR_arch_prctl
10472 case TARGET_NR_arch_prctl:
10473 return do_arch_prctl(cpu_env, arg1, arg2);
10474 #endif
10475 #ifdef TARGET_NR_pread64
10476 case TARGET_NR_pread64:
10477 if (regpairs_aligned(cpu_env, num)) {
10478 arg4 = arg5;
10479 arg5 = arg6;
10480 }
10481 if (arg2 == 0 && arg3 == 0) {
10482 /* Special-case NULL buffer and zero length, which should succeed */
10483 p = 0;
10484 } else {
10485 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10486 if (!p) {
10487 return -TARGET_EFAULT;
10488 }
10489 }
10490 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10491 unlock_user(p, arg2, ret);
10492 return ret;
10493 case TARGET_NR_pwrite64:
10494 if (regpairs_aligned(cpu_env, num)) {
10495 arg4 = arg5;
10496 arg5 = arg6;
10497 }
10498 if (arg2 == 0 && arg3 == 0) {
10499 /* Special-case NULL buffer and zero length, which should succeed */
10500 p = 0;
10501 } else {
10502 p = lock_user(VERIFY_READ, arg2, arg3, 1);
10503 if (!p) {
10504 return -TARGET_EFAULT;
10505 }
10506 }
10507 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10508 unlock_user(p, arg2, 0);
10509 return ret;
10510 #endif
10511 case TARGET_NR_getcwd:
10512 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10513 return -TARGET_EFAULT;
10514 ret = get_errno(sys_getcwd1(p, arg2));
10515 unlock_user(p, arg1, ret);
10516 return ret;
10517 case TARGET_NR_capget:
10518 case TARGET_NR_capset:
10519 {
10520 struct target_user_cap_header *target_header;
10521 struct target_user_cap_data *target_data = NULL;
10522 struct __user_cap_header_struct header;
10523 struct __user_cap_data_struct data[2];
10524 struct __user_cap_data_struct *dataptr = NULL;
10525 int i, target_datalen;
10526 int data_items = 1;
10527
10528 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10529 return -TARGET_EFAULT;
10530 }
10531 header.version = tswap32(target_header->version);
10532 header.pid = tswap32(target_header->pid);
10533
10534 if (header.version != _LINUX_CAPABILITY_VERSION) {
10535 /* Version 2 and up takes pointer to two user_data structs */
10536 data_items = 2;
10537 }
10538
10539 target_datalen = sizeof(*target_data) * data_items;
10540
10541 if (arg2) {
10542 if (num == TARGET_NR_capget) {
10543 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10544 } else {
10545 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10546 }
10547 if (!target_data) {
10548 unlock_user_struct(target_header, arg1, 0);
10549 return -TARGET_EFAULT;
10550 }
10551
10552 if (num == TARGET_NR_capset) {
10553 for (i = 0; i < data_items; i++) {
10554 data[i].effective = tswap32(target_data[i].effective);
10555 data[i].permitted = tswap32(target_data[i].permitted);
10556 data[i].inheritable = tswap32(target_data[i].inheritable);
10557 }
10558 }
10559
10560 dataptr = data;
10561 }
10562
10563 if (num == TARGET_NR_capget) {
10564 ret = get_errno(capget(&header, dataptr));
10565 } else {
10566 ret = get_errno(capset(&header, dataptr));
10567 }
10568
10569 /* The kernel always updates version for both capget and capset */
10570 target_header->version = tswap32(header.version);
10571 unlock_user_struct(target_header, arg1, 1);
10572
10573 if (arg2) {
10574 if (num == TARGET_NR_capget) {
10575 for (i = 0; i < data_items; i++) {
10576 target_data[i].effective = tswap32(data[i].effective);
10577 target_data[i].permitted = tswap32(data[i].permitted);
10578 target_data[i].inheritable = tswap32(data[i].inheritable);
10579 }
10580 unlock_user(target_data, arg2, target_datalen);
10581 } else {
10582 unlock_user(target_data, arg2, 0);
10583 }
10584 }
10585 return ret;
10586 }
10587 case TARGET_NR_sigaltstack:
10588 return do_sigaltstack(arg1, arg2,
10589 get_sp_from_cpustate((CPUArchState *)cpu_env));
10590
10591 #ifdef CONFIG_SENDFILE
10592 #ifdef TARGET_NR_sendfile
10593 case TARGET_NR_sendfile:
10594 {
10595 off_t *offp = NULL;
10596 off_t off;
10597 if (arg3) {
10598 ret = get_user_sal(off, arg3);
10599 if (is_error(ret)) {
10600 return ret;
10601 }
10602 offp = &off;
10603 }
10604 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10605 if (!is_error(ret) && arg3) {
10606 abi_long ret2 = put_user_sal(off, arg3);
10607 if (is_error(ret2)) {
10608 ret = ret2;
10609 }
10610 }
10611 return ret;
10612 }
10613 #endif
10614 #ifdef TARGET_NR_sendfile64
10615 case TARGET_NR_sendfile64:
10616 {
10617 off_t *offp = NULL;
10618 off_t off;
10619 if (arg3) {
10620 ret = get_user_s64(off, arg3);
10621 if (is_error(ret)) {
10622 return ret;
10623 }
10624 offp = &off;
10625 }
10626 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10627 if (!is_error(ret) && arg3) {
10628 abi_long ret2 = put_user_s64(off, arg3);
10629 if (is_error(ret2)) {
10630 ret = ret2;
10631 }
10632 }
10633 return ret;
10634 }
10635 #endif
10636 #endif
10637 #ifdef TARGET_NR_vfork
10638 case TARGET_NR_vfork:
10639 return get_errno(do_fork(cpu_env,
10640 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
10641 0, 0, 0, 0));
10642 #endif
10643 #ifdef TARGET_NR_ugetrlimit
10644 case TARGET_NR_ugetrlimit:
10645 {
10646 struct rlimit rlim;
10647 int resource = target_to_host_resource(arg1);
10648 ret = get_errno(getrlimit(resource, &rlim));
10649 if (!is_error(ret)) {
10650 struct target_rlimit *target_rlim;
10651 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10652 return -TARGET_EFAULT;
10653 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10654 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10655 unlock_user_struct(target_rlim, arg2, 1);
10656 }
10657 return ret;
10658 }
10659 #endif
10660 #ifdef TARGET_NR_truncate64
10661 case TARGET_NR_truncate64:
10662 if (!(p = lock_user_string(arg1)))
10663 return -TARGET_EFAULT;
10664 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
10665 unlock_user(p, arg1, 0);
10666 return ret;
10667 #endif
10668 #ifdef TARGET_NR_ftruncate64
10669 case TARGET_NR_ftruncate64:
10670 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
10671 #endif
10672 #ifdef TARGET_NR_stat64
10673 case TARGET_NR_stat64:
10674 if (!(p = lock_user_string(arg1))) {
10675 return -TARGET_EFAULT;
10676 }
10677 ret = get_errno(stat(path(p), &st));
10678 unlock_user(p, arg1, 0);
10679 if (!is_error(ret))
10680 ret = host_to_target_stat64(cpu_env, arg2, &st);
10681 return ret;
10682 #endif
10683 #ifdef TARGET_NR_lstat64
10684 case TARGET_NR_lstat64:
10685 if (!(p = lock_user_string(arg1))) {
10686 return -TARGET_EFAULT;
10687 }
10688 ret = get_errno(lstat(path(p), &st));
10689 unlock_user(p, arg1, 0);
10690 if (!is_error(ret))
10691 ret = host_to_target_stat64(cpu_env, arg2, &st);
10692 return ret;
10693 #endif
10694 #ifdef TARGET_NR_fstat64
10695 case TARGET_NR_fstat64:
10696 ret = get_errno(fstat(arg1, &st));
10697 if (!is_error(ret))
10698 ret = host_to_target_stat64(cpu_env, arg2, &st);
10699 return ret;
10700 #endif
10701 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
10702 #ifdef TARGET_NR_fstatat64
10703 case TARGET_NR_fstatat64:
10704 #endif
10705 #ifdef TARGET_NR_newfstatat
10706 case TARGET_NR_newfstatat:
10707 #endif
10708 if (!(p = lock_user_string(arg2))) {
10709 return -TARGET_EFAULT;
10710 }
10711 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
10712 unlock_user(p, arg2, 0);
10713 if (!is_error(ret))
10714 ret = host_to_target_stat64(cpu_env, arg3, &st);
10715 return ret;
10716 #endif
10717 #if defined(TARGET_NR_statx)
10718 case TARGET_NR_statx:
10719 {
10720 struct target_statx *target_stx;
10721 int dirfd = arg1;
10722 int flags = arg3;
10723
10724 p = lock_user_string(arg2);
10725 if (p == NULL) {
10726 return -TARGET_EFAULT;
10727 }
10728 #if defined(__NR_statx)
10729 {
10730 /*
10731 * It is assumed that struct statx is architecture independent.
10732 */
10733 struct target_statx host_stx;
10734 int mask = arg4;
10735
10736 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
10737 if (!is_error(ret)) {
10738 if (host_to_target_statx(&host_stx, arg5) != 0) {
10739 unlock_user(p, arg2, 0);
10740 return -TARGET_EFAULT;
10741 }
10742 }
10743
10744 if (ret != -TARGET_ENOSYS) {
10745 unlock_user(p, arg2, 0);
10746 return ret;
10747 }
10748 }
10749 #endif
10750 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
10751 unlock_user(p, arg2, 0);
10752
10753 if (!is_error(ret)) {
10754 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
10755 return -TARGET_EFAULT;
10756 }
10757 memset(target_stx, 0, sizeof(*target_stx));
10758 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
10759 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
10760 __put_user(st.st_ino, &target_stx->stx_ino);
10761 __put_user(st.st_mode, &target_stx->stx_mode);
10762 __put_user(st.st_uid, &target_stx->stx_uid);
10763 __put_user(st.st_gid, &target_stx->stx_gid);
10764 __put_user(st.st_nlink, &target_stx->stx_nlink);
10765 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
10766 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
10767 __put_user(st.st_size, &target_stx->stx_size);
10768 __put_user(st.st_blksize, &target_stx->stx_blksize);
10769 __put_user(st.st_blocks, &target_stx->stx_blocks);
10770 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
10771 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
10772 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
10773 unlock_user_struct(target_stx, arg5, 1);
10774 }
10775 }
10776 return ret;
10777 #endif
10778 #ifdef TARGET_NR_lchown
10779 case TARGET_NR_lchown:
10780 if (!(p = lock_user_string(arg1)))
10781 return -TARGET_EFAULT;
10782 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
10783 unlock_user(p, arg1, 0);
10784 return ret;
10785 #endif
10786 #ifdef TARGET_NR_getuid
10787 case TARGET_NR_getuid:
10788 return get_errno(high2lowuid(getuid()));
10789 #endif
10790 #ifdef TARGET_NR_getgid
10791 case TARGET_NR_getgid:
10792 return get_errno(high2lowgid(getgid()));
10793 #endif
10794 #ifdef TARGET_NR_geteuid
10795 case TARGET_NR_geteuid:
10796 return get_errno(high2lowuid(geteuid()));
10797 #endif
10798 #ifdef TARGET_NR_getegid
10799 case TARGET_NR_getegid:
10800 return get_errno(high2lowgid(getegid()));
10801 #endif
10802 case TARGET_NR_setreuid:
10803 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
10804 case TARGET_NR_setregid:
10805 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
10806 case TARGET_NR_getgroups:
10807 {
10808 int gidsetsize = arg1;
10809 target_id *target_grouplist;
10810 gid_t *grouplist;
10811 int i;
10812
10813 grouplist = alloca(gidsetsize * sizeof(gid_t));
10814 ret = get_errno(getgroups(gidsetsize, grouplist));
10815 if (gidsetsize == 0)
10816 return ret;
10817 if (!is_error(ret)) {
10818 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
10819 if (!target_grouplist)
10820 return -TARGET_EFAULT;
10821 for(i = 0;i < ret; i++)
10822 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
10823 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
10824 }
10825 }
10826 return ret;
10827 case TARGET_NR_setgroups:
10828 {
10829 int gidsetsize = arg1;
10830 target_id *target_grouplist;
10831 gid_t *grouplist = NULL;
10832 int i;
10833 if (gidsetsize) {
10834 grouplist = alloca(gidsetsize * sizeof(gid_t));
10835 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
10836 if (!target_grouplist) {
10837 return -TARGET_EFAULT;
10838 }
10839 for (i = 0; i < gidsetsize; i++) {
10840 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
10841 }
10842 unlock_user(target_grouplist, arg2, 0);
10843 }
10844 return get_errno(setgroups(gidsetsize, grouplist));
10845 }
10846 case TARGET_NR_fchown:
10847 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
10848 #if defined(TARGET_NR_fchownat)
10849 case TARGET_NR_fchownat:
10850 if (!(p = lock_user_string(arg2)))
10851 return -TARGET_EFAULT;
10852 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
10853 low2highgid(arg4), arg5));
10854 unlock_user(p, arg2, 0);
10855 return ret;
10856 #endif
10857 #ifdef TARGET_NR_setresuid
10858 case TARGET_NR_setresuid:
10859 return get_errno(sys_setresuid(low2highuid(arg1),
10860 low2highuid(arg2),
10861 low2highuid(arg3)));
10862 #endif
10863 #ifdef TARGET_NR_getresuid
10864 case TARGET_NR_getresuid:
10865 {
10866 uid_t ruid, euid, suid;
10867 ret = get_errno(getresuid(&ruid, &euid, &suid));
10868 if (!is_error(ret)) {
10869 if (put_user_id(high2lowuid(ruid), arg1)
10870 || put_user_id(high2lowuid(euid), arg2)
10871 || put_user_id(high2lowuid(suid), arg3))
10872 return -TARGET_EFAULT;
10873 }
10874 }
10875 return ret;
10876 #endif
10877 #ifdef TARGET_NR_getresgid
10878 case TARGET_NR_setresgid:
10879 return get_errno(sys_setresgid(low2highgid(arg1),
10880 low2highgid(arg2),
10881 low2highgid(arg3)));
10882 #endif
10883 #ifdef TARGET_NR_getresgid
10884 case TARGET_NR_getresgid:
10885 {
10886 gid_t rgid, egid, sgid;
10887 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10888 if (!is_error(ret)) {
10889 if (put_user_id(high2lowgid(rgid), arg1)
10890 || put_user_id(high2lowgid(egid), arg2)
10891 || put_user_id(high2lowgid(sgid), arg3))
10892 return -TARGET_EFAULT;
10893 }
10894 }
10895 return ret;
10896 #endif
10897 #ifdef TARGET_NR_chown
10898 case TARGET_NR_chown:
10899 if (!(p = lock_user_string(arg1)))
10900 return -TARGET_EFAULT;
10901 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
10902 unlock_user(p, arg1, 0);
10903 return ret;
10904 #endif
10905 case TARGET_NR_setuid:
10906 return get_errno(sys_setuid(low2highuid(arg1)));
10907 case TARGET_NR_setgid:
10908 return get_errno(sys_setgid(low2highgid(arg1)));
10909 case TARGET_NR_setfsuid:
10910 return get_errno(setfsuid(arg1));
10911 case TARGET_NR_setfsgid:
10912 return get_errno(setfsgid(arg1));
10913
10914 #ifdef TARGET_NR_lchown32
10915 case TARGET_NR_lchown32:
10916 if (!(p = lock_user_string(arg1)))
10917 return -TARGET_EFAULT;
10918 ret = get_errno(lchown(p, arg2, arg3));
10919 unlock_user(p, arg1, 0);
10920 return ret;
10921 #endif
10922 #ifdef TARGET_NR_getuid32
10923 case TARGET_NR_getuid32:
10924 return get_errno(getuid());
10925 #endif
10926
10927 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
10928 /* Alpha specific */
10929 case TARGET_NR_getxuid:
10930 {
10931 uid_t euid;
10932 euid=geteuid();
10933 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
10934 }
10935 return get_errno(getuid());
10936 #endif
10937 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
10938 /* Alpha specific */
10939 case TARGET_NR_getxgid:
10940 {
10941 uid_t egid;
10942 egid=getegid();
10943 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
10944 }
10945 return get_errno(getgid());
10946 #endif
10947 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
10948 /* Alpha specific */
10949 case TARGET_NR_osf_getsysinfo:
10950 ret = -TARGET_EOPNOTSUPP;
10951 switch (arg1) {
10952 case TARGET_GSI_IEEE_FP_CONTROL:
10953 {
10954 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
10955 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr;
10956
10957 swcr &= ~SWCR_STATUS_MASK;
10958 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
10959
10960 if (put_user_u64 (swcr, arg2))
10961 return -TARGET_EFAULT;
10962 ret = 0;
10963 }
10964 break;
10965
10966 /* case GSI_IEEE_STATE_AT_SIGNAL:
10967 -- Not implemented in linux kernel.
10968 case GSI_UACPROC:
10969 -- Retrieves current unaligned access state; not much used.
10970 case GSI_PROC_TYPE:
10971 -- Retrieves implver information; surely not used.
10972 case GSI_GET_HWRPB:
10973 -- Grabs a copy of the HWRPB; surely not used.
10974 */
10975 }
10976 return ret;
10977 #endif
10978 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
10979 /* Alpha specific */
10980 case TARGET_NR_osf_setsysinfo:
10981 ret = -TARGET_EOPNOTSUPP;
10982 switch (arg1) {
10983 case TARGET_SSI_IEEE_FP_CONTROL:
10984 {
10985 uint64_t swcr, fpcr;
10986
10987 if (get_user_u64 (swcr, arg2)) {
10988 return -TARGET_EFAULT;
10989 }
10990
10991 /*
10992 * The kernel calls swcr_update_status to update the
10993 * status bits from the fpcr at every point that it
10994 * could be queried. Therefore, we store the status
10995 * bits only in FPCR.
10996 */
10997 ((CPUAlphaState *)cpu_env)->swcr
10998 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
10999
11000 fpcr = cpu_alpha_load_fpcr(cpu_env);
11001 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
11002 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
11003 cpu_alpha_store_fpcr(cpu_env, fpcr);
11004 ret = 0;
11005 }
11006 break;
11007
11008 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
11009 {
11010 uint64_t exc, fpcr, fex;
11011
11012 if (get_user_u64(exc, arg2)) {
11013 return -TARGET_EFAULT;
11014 }
11015 exc &= SWCR_STATUS_MASK;
11016 fpcr = cpu_alpha_load_fpcr(cpu_env);
11017
11018 /* Old exceptions are not signaled. */
11019 fex = alpha_ieee_fpcr_to_swcr(fpcr);
11020 fex = exc & ~fex;
11021 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
11022 fex &= ((CPUArchState *)cpu_env)->swcr;
11023
11024 /* Update the hardware fpcr. */
11025 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
11026 cpu_alpha_store_fpcr(cpu_env, fpcr);
11027
11028 if (fex) {
11029 int si_code = TARGET_FPE_FLTUNK;
11030 target_siginfo_t info;
11031
11032 if (fex & SWCR_TRAP_ENABLE_DNO) {
11033 si_code = TARGET_FPE_FLTUND;
11034 }
11035 if (fex & SWCR_TRAP_ENABLE_INE) {
11036 si_code = TARGET_FPE_FLTRES;
11037 }
11038 if (fex & SWCR_TRAP_ENABLE_UNF) {
11039 si_code = TARGET_FPE_FLTUND;
11040 }
11041 if (fex & SWCR_TRAP_ENABLE_OVF) {
11042 si_code = TARGET_FPE_FLTOVF;
11043 }
11044 if (fex & SWCR_TRAP_ENABLE_DZE) {
11045 si_code = TARGET_FPE_FLTDIV;
11046 }
11047 if (fex & SWCR_TRAP_ENABLE_INV) {
11048 si_code = TARGET_FPE_FLTINV;
11049 }
11050
11051 info.si_signo = SIGFPE;
11052 info.si_errno = 0;
11053 info.si_code = si_code;
11054 info._sifields._sigfault._addr
11055 = ((CPUArchState *)cpu_env)->pc;
11056 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11057 QEMU_SI_FAULT, &info);
11058 }
11059 ret = 0;
11060 }
11061 break;
11062
11063 /* case SSI_NVPAIRS:
11064 -- Used with SSIN_UACPROC to enable unaligned accesses.
11065 case SSI_IEEE_STATE_AT_SIGNAL:
11066 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
11067 -- Not implemented in linux kernel
11068 */
11069 }
11070 return ret;
11071 #endif
11072 #ifdef TARGET_NR_osf_sigprocmask
11073 /* Alpha specific. */
11074 case TARGET_NR_osf_sigprocmask:
11075 {
11076 abi_ulong mask;
11077 int how;
11078 sigset_t set, oldset;
11079
11080 switch(arg1) {
11081 case TARGET_SIG_BLOCK:
11082 how = SIG_BLOCK;
11083 break;
11084 case TARGET_SIG_UNBLOCK:
11085 how = SIG_UNBLOCK;
11086 break;
11087 case TARGET_SIG_SETMASK:
11088 how = SIG_SETMASK;
11089 break;
11090 default:
11091 return -TARGET_EINVAL;
11092 }
11093 mask = arg2;
11094 target_to_host_old_sigset(&set, &mask);
11095 ret = do_sigprocmask(how, &set, &oldset);
11096 if (!ret) {
11097 host_to_target_old_sigset(&mask, &oldset);
11098 ret = mask;
11099 }
11100 }
11101 return ret;
11102 #endif
11103
11104 #ifdef TARGET_NR_getgid32
11105 case TARGET_NR_getgid32:
11106 return get_errno(getgid());
11107 #endif
11108 #ifdef TARGET_NR_geteuid32
11109 case TARGET_NR_geteuid32:
11110 return get_errno(geteuid());
11111 #endif
11112 #ifdef TARGET_NR_getegid32
11113 case TARGET_NR_getegid32:
11114 return get_errno(getegid());
11115 #endif
11116 #ifdef TARGET_NR_setreuid32
11117 case TARGET_NR_setreuid32:
11118 return get_errno(setreuid(arg1, arg2));
11119 #endif
11120 #ifdef TARGET_NR_setregid32
11121 case TARGET_NR_setregid32:
11122 return get_errno(setregid(arg1, arg2));
11123 #endif
11124 #ifdef TARGET_NR_getgroups32
11125 case TARGET_NR_getgroups32:
11126 {
11127 int gidsetsize = arg1;
11128 uint32_t *target_grouplist;
11129 gid_t *grouplist;
11130 int i;
11131
11132 grouplist = alloca(gidsetsize * sizeof(gid_t));
11133 ret = get_errno(getgroups(gidsetsize, grouplist));
11134 if (gidsetsize == 0)
11135 return ret;
11136 if (!is_error(ret)) {
11137 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
11138 if (!target_grouplist) {
11139 return -TARGET_EFAULT;
11140 }
11141 for(i = 0;i < ret; i++)
11142 target_grouplist[i] = tswap32(grouplist[i]);
11143 unlock_user(target_grouplist, arg2, gidsetsize * 4);
11144 }
11145 }
11146 return ret;
11147 #endif
11148 #ifdef TARGET_NR_setgroups32
11149 case TARGET_NR_setgroups32:
11150 {
11151 int gidsetsize = arg1;
11152 uint32_t *target_grouplist;
11153 gid_t *grouplist;
11154 int i;
11155
11156 grouplist = alloca(gidsetsize * sizeof(gid_t));
11157 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
11158 if (!target_grouplist) {
11159 return -TARGET_EFAULT;
11160 }
11161 for(i = 0;i < gidsetsize; i++)
11162 grouplist[i] = tswap32(target_grouplist[i]);
11163 unlock_user(target_grouplist, arg2, 0);
11164 return get_errno(setgroups(gidsetsize, grouplist));
11165 }
11166 #endif
11167 #ifdef TARGET_NR_fchown32
11168 case TARGET_NR_fchown32:
11169 return get_errno(fchown(arg1, arg2, arg3));
11170 #endif
11171 #ifdef TARGET_NR_setresuid32
11172 case TARGET_NR_setresuid32:
11173 return get_errno(sys_setresuid(arg1, arg2, arg3));
11174 #endif
11175 #ifdef TARGET_NR_getresuid32
11176 case TARGET_NR_getresuid32:
11177 {
11178 uid_t ruid, euid, suid;
11179 ret = get_errno(getresuid(&ruid, &euid, &suid));
11180 if (!is_error(ret)) {
11181 if (put_user_u32(ruid, arg1)
11182 || put_user_u32(euid, arg2)
11183 || put_user_u32(suid, arg3))
11184 return -TARGET_EFAULT;
11185 }
11186 }
11187 return ret;
11188 #endif
11189 #ifdef TARGET_NR_setresgid32
11190 case TARGET_NR_setresgid32:
11191 return get_errno(sys_setresgid(arg1, arg2, arg3));
11192 #endif
11193 #ifdef TARGET_NR_getresgid32
11194 case TARGET_NR_getresgid32:
11195 {
11196 gid_t rgid, egid, sgid;
11197 ret = get_errno(getresgid(&rgid, &egid, &sgid));
11198 if (!is_error(ret)) {
11199 if (put_user_u32(rgid, arg1)
11200 || put_user_u32(egid, arg2)
11201 || put_user_u32(sgid, arg3))
11202 return -TARGET_EFAULT;
11203 }
11204 }
11205 return ret;
11206 #endif
11207 #ifdef TARGET_NR_chown32
11208 case TARGET_NR_chown32:
11209 if (!(p = lock_user_string(arg1)))
11210 return -TARGET_EFAULT;
11211 ret = get_errno(chown(p, arg2, arg3));
11212 unlock_user(p, arg1, 0);
11213 return ret;
11214 #endif
11215 #ifdef TARGET_NR_setuid32
11216 case TARGET_NR_setuid32:
11217 return get_errno(sys_setuid(arg1));
11218 #endif
11219 #ifdef TARGET_NR_setgid32
11220 case TARGET_NR_setgid32:
11221 return get_errno(sys_setgid(arg1));
11222 #endif
11223 #ifdef TARGET_NR_setfsuid32
11224 case TARGET_NR_setfsuid32:
11225 return get_errno(setfsuid(arg1));
11226 #endif
11227 #ifdef TARGET_NR_setfsgid32
11228 case TARGET_NR_setfsgid32:
11229 return get_errno(setfsgid(arg1));
11230 #endif
11231 #ifdef TARGET_NR_mincore
11232 case TARGET_NR_mincore:
11233 {
11234 void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
11235 if (!a) {
11236 return -TARGET_ENOMEM;
11237 }
11238 p = lock_user_string(arg3);
11239 if (!p) {
11240 ret = -TARGET_EFAULT;
11241 } else {
11242 ret = get_errno(mincore(a, arg2, p));
11243 unlock_user(p, arg3, ret);
11244 }
11245 unlock_user(a, arg1, 0);
11246 }
11247 return ret;
11248 #endif
11249 #ifdef TARGET_NR_arm_fadvise64_64
11250 case TARGET_NR_arm_fadvise64_64:
11251 /* arm_fadvise64_64 looks like fadvise64_64 but
11252 * with different argument order: fd, advice, offset, len
11253 * rather than the usual fd, offset, len, advice.
11254 * Note that offset and len are both 64-bit so appear as
11255 * pairs of 32-bit registers.
11256 */
11257 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
11258 target_offset64(arg5, arg6), arg2);
11259 return -host_to_target_errno(ret);
11260 #endif
11261
11262 #if TARGET_ABI_BITS == 32
11263
11264 #ifdef TARGET_NR_fadvise64_64
11265 case TARGET_NR_fadvise64_64:
11266 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
11267 /* 6 args: fd, advice, offset (high, low), len (high, low) */
11268 ret = arg2;
11269 arg2 = arg3;
11270 arg3 = arg4;
11271 arg4 = arg5;
11272 arg5 = arg6;
11273 arg6 = ret;
11274 #else
11275 /* 6 args: fd, offset (high, low), len (high, low), advice */
11276 if (regpairs_aligned(cpu_env, num)) {
11277 /* offset is in (3,4), len in (5,6) and advice in 7 */
11278 arg2 = arg3;
11279 arg3 = arg4;
11280 arg4 = arg5;
11281 arg5 = arg6;
11282 arg6 = arg7;
11283 }
11284 #endif
11285 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
11286 target_offset64(arg4, arg5), arg6);
11287 return -host_to_target_errno(ret);
11288 #endif
11289
11290 #ifdef TARGET_NR_fadvise64
11291 case TARGET_NR_fadvise64:
11292 /* 5 args: fd, offset (high, low), len, advice */
11293 if (regpairs_aligned(cpu_env, num)) {
11294 /* offset is in (3,4), len in 5 and advice in 6 */
11295 arg2 = arg3;
11296 arg3 = arg4;
11297 arg4 = arg5;
11298 arg5 = arg6;
11299 }
11300 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
11301 return -host_to_target_errno(ret);
11302 #endif
11303
11304 #else /* not a 32-bit ABI */
11305 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
11306 #ifdef TARGET_NR_fadvise64_64
11307 case TARGET_NR_fadvise64_64:
11308 #endif
11309 #ifdef TARGET_NR_fadvise64
11310 case TARGET_NR_fadvise64:
11311 #endif
11312 #ifdef TARGET_S390X
11313 switch (arg4) {
11314 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
11315 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
11316 case 6: arg4 = POSIX_FADV_DONTNEED; break;
11317 case 7: arg4 = POSIX_FADV_NOREUSE; break;
11318 default: break;
11319 }
11320 #endif
11321 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
11322 #endif
11323 #endif /* end of 64-bit ABI fadvise handling */
11324
11325 #ifdef TARGET_NR_madvise
11326 case TARGET_NR_madvise:
11327 /* A straight passthrough may not be safe because qemu sometimes
11328 turns private file-backed mappings into anonymous mappings.
11329 This will break MADV_DONTNEED.
11330 This is a hint, so ignoring and returning success is ok. */
11331 return 0;
11332 #endif
11333 #ifdef TARGET_NR_fcntl64
11334 case TARGET_NR_fcntl64:
11335 {
11336 int cmd;
11337 struct flock64 fl;
11338 from_flock64_fn *copyfrom = copy_from_user_flock64;
11339 to_flock64_fn *copyto = copy_to_user_flock64;
11340
11341 #ifdef TARGET_ARM
11342 if (!((CPUARMState *)cpu_env)->eabi) {
11343 copyfrom = copy_from_user_oabi_flock64;
11344 copyto = copy_to_user_oabi_flock64;
11345 }
11346 #endif
11347
11348 cmd = target_to_host_fcntl_cmd(arg2);
11349 if (cmd == -TARGET_EINVAL) {
11350 return cmd;
11351 }
11352
11353 switch(arg2) {
11354 case TARGET_F_GETLK64:
11355 ret = copyfrom(&fl, arg3);
11356 if (ret) {
11357 break;
11358 }
11359 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11360 if (ret == 0) {
11361 ret = copyto(arg3, &fl);
11362 }
11363 break;
11364
11365 case TARGET_F_SETLK64:
11366 case TARGET_F_SETLKW64:
11367 ret = copyfrom(&fl, arg3);
11368 if (ret) {
11369 break;
11370 }
11371 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
11372 break;
11373 default:
11374 ret = do_fcntl(arg1, arg2, arg3);
11375 break;
11376 }
11377 return ret;
11378 }
11379 #endif
11380 #ifdef TARGET_NR_cacheflush
11381 case TARGET_NR_cacheflush:
11382 /* self-modifying code is handled automatically, so nothing needed */
11383 return 0;
11384 #endif
11385 #ifdef TARGET_NR_getpagesize
11386 case TARGET_NR_getpagesize:
11387 return TARGET_PAGE_SIZE;
11388 #endif
11389 case TARGET_NR_gettid:
11390 return get_errno(sys_gettid());
11391 #ifdef TARGET_NR_readahead
11392 case TARGET_NR_readahead:
11393 #if TARGET_ABI_BITS == 32
11394 if (regpairs_aligned(cpu_env, num)) {
11395 arg2 = arg3;
11396 arg3 = arg4;
11397 arg4 = arg5;
11398 }
11399 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
11400 #else
11401 ret = get_errno(readahead(arg1, arg2, arg3));
11402 #endif
11403 return ret;
11404 #endif
11405 #ifdef CONFIG_ATTR
11406 #ifdef TARGET_NR_setxattr
11407 case TARGET_NR_listxattr:
11408 case TARGET_NR_llistxattr:
11409 {
11410 void *p, *b = 0;
11411 if (arg2) {
11412 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11413 if (!b) {
11414 return -TARGET_EFAULT;
11415 }
11416 }
11417 p = lock_user_string(arg1);
11418 if (p) {
11419 if (num == TARGET_NR_listxattr) {
11420 ret = get_errno(listxattr(p, b, arg3));
11421 } else {
11422 ret = get_errno(llistxattr(p, b, arg3));
11423 }
11424 } else {
11425 ret = -TARGET_EFAULT;
11426 }
11427 unlock_user(p, arg1, 0);
11428 unlock_user(b, arg2, arg3);
11429 return ret;
11430 }
11431 case TARGET_NR_flistxattr:
11432 {
11433 void *b = 0;
11434 if (arg2) {
11435 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11436 if (!b) {
11437 return -TARGET_EFAULT;
11438 }
11439 }
11440 ret = get_errno(flistxattr(arg1, b, arg3));
11441 unlock_user(b, arg2, arg3);
11442 return ret;
11443 }
11444 case TARGET_NR_setxattr:
11445 case TARGET_NR_lsetxattr:
11446 {
11447 void *p, *n, *v = 0;
11448 if (arg3) {
11449 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11450 if (!v) {
11451 return -TARGET_EFAULT;
11452 }
11453 }
11454 p = lock_user_string(arg1);
11455 n = lock_user_string(arg2);
11456 if (p && n) {
11457 if (num == TARGET_NR_setxattr) {
11458 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11459 } else {
11460 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11461 }
11462 } else {
11463 ret = -TARGET_EFAULT;
11464 }
11465 unlock_user(p, arg1, 0);
11466 unlock_user(n, arg2, 0);
11467 unlock_user(v, arg3, 0);
11468 }
11469 return ret;
11470 case TARGET_NR_fsetxattr:
11471 {
11472 void *n, *v = 0;
11473 if (arg3) {
11474 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11475 if (!v) {
11476 return -TARGET_EFAULT;
11477 }
11478 }
11479 n = lock_user_string(arg2);
11480 if (n) {
11481 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11482 } else {
11483 ret = -TARGET_EFAULT;
11484 }
11485 unlock_user(n, arg2, 0);
11486 unlock_user(v, arg3, 0);
11487 }
11488 return ret;
11489 case TARGET_NR_getxattr:
11490 case TARGET_NR_lgetxattr:
11491 {
11492 void *p, *n, *v = 0;
11493 if (arg3) {
11494 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11495 if (!v) {
11496 return -TARGET_EFAULT;
11497 }
11498 }
11499 p = lock_user_string(arg1);
11500 n = lock_user_string(arg2);
11501 if (p && n) {
11502 if (num == TARGET_NR_getxattr) {
11503 ret = get_errno(getxattr(p, n, v, arg4));
11504 } else {
11505 ret = get_errno(lgetxattr(p, n, v, arg4));
11506 }
11507 } else {
11508 ret = -TARGET_EFAULT;
11509 }
11510 unlock_user(p, arg1, 0);
11511 unlock_user(n, arg2, 0);
11512 unlock_user(v, arg3, arg4);
11513 }
11514 return ret;
11515 case TARGET_NR_fgetxattr:
11516 {
11517 void *n, *v = 0;
11518 if (arg3) {
11519 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11520 if (!v) {
11521 return -TARGET_EFAULT;
11522 }
11523 }
11524 n = lock_user_string(arg2);
11525 if (n) {
11526 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11527 } else {
11528 ret = -TARGET_EFAULT;
11529 }
11530 unlock_user(n, arg2, 0);
11531 unlock_user(v, arg3, arg4);
11532 }
11533 return ret;
11534 case TARGET_NR_removexattr:
11535 case TARGET_NR_lremovexattr:
11536 {
11537 void *p, *n;
11538 p = lock_user_string(arg1);
11539 n = lock_user_string(arg2);
11540 if (p && n) {
11541 if (num == TARGET_NR_removexattr) {
11542 ret = get_errno(removexattr(p, n));
11543 } else {
11544 ret = get_errno(lremovexattr(p, n));
11545 }
11546 } else {
11547 ret = -TARGET_EFAULT;
11548 }
11549 unlock_user(p, arg1, 0);
11550 unlock_user(n, arg2, 0);
11551 }
11552 return ret;
11553 case TARGET_NR_fremovexattr:
11554 {
11555 void *n;
11556 n = lock_user_string(arg2);
11557 if (n) {
11558 ret = get_errno(fremovexattr(arg1, n));
11559 } else {
11560 ret = -TARGET_EFAULT;
11561 }
11562 unlock_user(n, arg2, 0);
11563 }
11564 return ret;
11565 #endif
11566 #endif /* CONFIG_ATTR */
11567 #ifdef TARGET_NR_set_thread_area
11568 case TARGET_NR_set_thread_area:
11569 #if defined(TARGET_MIPS)
11570 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
11571 return 0;
11572 #elif defined(TARGET_CRIS)
11573 if (arg1 & 0xff)
11574 ret = -TARGET_EINVAL;
11575 else {
11576 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
11577 ret = 0;
11578 }
11579 return ret;
11580 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
11581 return do_set_thread_area(cpu_env, arg1);
11582 #elif defined(TARGET_M68K)
11583 {
11584 TaskState *ts = cpu->opaque;
11585 ts->tp_value = arg1;
11586 return 0;
11587 }
11588 #else
11589 return -TARGET_ENOSYS;
11590 #endif
11591 #endif
11592 #ifdef TARGET_NR_get_thread_area
11593 case TARGET_NR_get_thread_area:
11594 #if defined(TARGET_I386) && defined(TARGET_ABI32)
11595 return do_get_thread_area(cpu_env, arg1);
11596 #elif defined(TARGET_M68K)
11597 {
11598 TaskState *ts = cpu->opaque;
11599 return ts->tp_value;
11600 }
11601 #else
11602 return -TARGET_ENOSYS;
11603 #endif
11604 #endif
11605 #ifdef TARGET_NR_getdomainname
11606 case TARGET_NR_getdomainname:
11607 return -TARGET_ENOSYS;
11608 #endif
11609
11610 #ifdef TARGET_NR_clock_settime
11611 case TARGET_NR_clock_settime:
11612 {
11613 struct timespec ts;
11614
11615 ret = target_to_host_timespec(&ts, arg2);
11616 if (!is_error(ret)) {
11617 ret = get_errno(clock_settime(arg1, &ts));
11618 }
11619 return ret;
11620 }
11621 #endif
11622 #ifdef TARGET_NR_clock_settime64
11623 case TARGET_NR_clock_settime64:
11624 {
11625 struct timespec ts;
11626
11627 ret = target_to_host_timespec64(&ts, arg2);
11628 if (!is_error(ret)) {
11629 ret = get_errno(clock_settime(arg1, &ts));
11630 }
11631 return ret;
11632 }
11633 #endif
11634 #ifdef TARGET_NR_clock_gettime
11635 case TARGET_NR_clock_gettime:
11636 {
11637 struct timespec ts;
11638 ret = get_errno(clock_gettime(arg1, &ts));
11639 if (!is_error(ret)) {
11640 ret = host_to_target_timespec(arg2, &ts);
11641 }
11642 return ret;
11643 }
11644 #endif
11645 #ifdef TARGET_NR_clock_gettime64
11646 case TARGET_NR_clock_gettime64:
11647 {
11648 struct timespec ts;
11649 ret = get_errno(clock_gettime(arg1, &ts));
11650 if (!is_error(ret)) {
11651 ret = host_to_target_timespec64(arg2, &ts);
11652 }
11653 return ret;
11654 }
11655 #endif
11656 #ifdef TARGET_NR_clock_getres
11657 case TARGET_NR_clock_getres:
11658 {
11659 struct timespec ts;
11660 ret = get_errno(clock_getres(arg1, &ts));
11661 if (!is_error(ret)) {
11662 host_to_target_timespec(arg2, &ts);
11663 }
11664 return ret;
11665 }
11666 #endif
11667 #ifdef TARGET_NR_clock_nanosleep
11668 case TARGET_NR_clock_nanosleep:
11669 {
11670 struct timespec ts;
11671 target_to_host_timespec(&ts, arg3);
11672 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
11673 &ts, arg4 ? &ts : NULL));
11674 if (arg4)
11675 host_to_target_timespec(arg4, &ts);
11676
11677 #if defined(TARGET_PPC)
11678 /* clock_nanosleep is odd in that it returns positive errno values.
11679 * On PPC, CR0 bit 3 should be set in such a situation. */
11680 if (ret && ret != -TARGET_ERESTARTSYS) {
11681 ((CPUPPCState *)cpu_env)->crf[0] |= 1;
11682 }
11683 #endif
11684 return ret;
11685 }
11686 #endif
11687
11688 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
11689 case TARGET_NR_set_tid_address:
11690 return get_errno(set_tid_address((int *)g2h(arg1)));
11691 #endif
11692
11693 case TARGET_NR_tkill:
11694 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
11695
11696 case TARGET_NR_tgkill:
11697 return get_errno(safe_tgkill((int)arg1, (int)arg2,
11698 target_to_host_signal(arg3)));
11699
11700 #ifdef TARGET_NR_set_robust_list
11701 case TARGET_NR_set_robust_list:
11702 case TARGET_NR_get_robust_list:
11703 /* The ABI for supporting robust futexes has userspace pass
11704 * the kernel a pointer to a linked list which is updated by
11705 * userspace after the syscall; the list is walked by the kernel
11706 * when the thread exits. Since the linked list in QEMU guest
11707 * memory isn't a valid linked list for the host and we have
11708 * no way to reliably intercept the thread-death event, we can't
11709 * support these. Silently return ENOSYS so that guest userspace
11710 * falls back to a non-robust futex implementation (which should
11711 * be OK except in the corner case of the guest crashing while
11712 * holding a mutex that is shared with another process via
11713 * shared memory).
11714 */
11715 return -TARGET_ENOSYS;
11716 #endif
11717
11718 #if defined(TARGET_NR_utimensat)
11719 case TARGET_NR_utimensat:
11720 {
11721 struct timespec *tsp, ts[2];
11722 if (!arg3) {
11723 tsp = NULL;
11724 } else {
11725 target_to_host_timespec(ts, arg3);
11726 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec));
11727 tsp = ts;
11728 }
11729 if (!arg2)
11730 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
11731 else {
11732 if (!(p = lock_user_string(arg2))) {
11733 return -TARGET_EFAULT;
11734 }
11735 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
11736 unlock_user(p, arg2, 0);
11737 }
11738 }
11739 return ret;
11740 #endif
11741 #ifdef TARGET_NR_futex
11742 case TARGET_NR_futex:
11743 return do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
11744 #endif
11745 #ifdef TARGET_NR_futex_time64
11746 case TARGET_NR_futex_time64:
11747 return do_futex_time64(arg1, arg2, arg3, arg4, arg5, arg6);
11748 #endif
11749 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
11750 case TARGET_NR_inotify_init:
11751 ret = get_errno(sys_inotify_init());
11752 if (ret >= 0) {
11753 fd_trans_register(ret, &target_inotify_trans);
11754 }
11755 return ret;
11756 #endif
11757 #ifdef CONFIG_INOTIFY1
11758 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
11759 case TARGET_NR_inotify_init1:
11760 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
11761 fcntl_flags_tbl)));
11762 if (ret >= 0) {
11763 fd_trans_register(ret, &target_inotify_trans);
11764 }
11765 return ret;
11766 #endif
11767 #endif
11768 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
11769 case TARGET_NR_inotify_add_watch:
11770 p = lock_user_string(arg2);
11771 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
11772 unlock_user(p, arg2, 0);
11773 return ret;
11774 #endif
11775 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
11776 case TARGET_NR_inotify_rm_watch:
11777 return get_errno(sys_inotify_rm_watch(arg1, arg2));
11778 #endif
11779
11780 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
11781 case TARGET_NR_mq_open:
11782 {
11783 struct mq_attr posix_mq_attr;
11784 struct mq_attr *pposix_mq_attr;
11785 int host_flags;
11786
11787 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
11788 pposix_mq_attr = NULL;
11789 if (arg4) {
11790 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
11791 return -TARGET_EFAULT;
11792 }
11793 pposix_mq_attr = &posix_mq_attr;
11794 }
11795 p = lock_user_string(arg1 - 1);
11796 if (!p) {
11797 return -TARGET_EFAULT;
11798 }
11799 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
11800 unlock_user (p, arg1, 0);
11801 }
11802 return ret;
11803
11804 case TARGET_NR_mq_unlink:
11805 p = lock_user_string(arg1 - 1);
11806 if (!p) {
11807 return -TARGET_EFAULT;
11808 }
11809 ret = get_errno(mq_unlink(p));
11810 unlock_user (p, arg1, 0);
11811 return ret;
11812
11813 #ifdef TARGET_NR_mq_timedsend
11814 case TARGET_NR_mq_timedsend:
11815 {
11816 struct timespec ts;
11817
11818 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11819 if (arg5 != 0) {
11820 target_to_host_timespec(&ts, arg5);
11821 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
11822 host_to_target_timespec(arg5, &ts);
11823 } else {
11824 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
11825 }
11826 unlock_user (p, arg2, arg3);
11827 }
11828 return ret;
11829 #endif
11830
11831 #ifdef TARGET_NR_mq_timedreceive
11832 case TARGET_NR_mq_timedreceive:
11833 {
11834 struct timespec ts;
11835 unsigned int prio;
11836
11837 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11838 if (arg5 != 0) {
11839 target_to_host_timespec(&ts, arg5);
11840 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11841 &prio, &ts));
11842 host_to_target_timespec(arg5, &ts);
11843 } else {
11844 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11845 &prio, NULL));
11846 }
11847 unlock_user (p, arg2, arg3);
11848 if (arg4 != 0)
11849 put_user_u32(prio, arg4);
11850 }
11851 return ret;
11852 #endif
11853
11854 /* Not implemented for now... */
11855 /* case TARGET_NR_mq_notify: */
11856 /* break; */
11857
11858 case TARGET_NR_mq_getsetattr:
11859 {
11860 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
11861 ret = 0;
11862 if (arg2 != 0) {
11863 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
11864 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
11865 &posix_mq_attr_out));
11866 } else if (arg3 != 0) {
11867 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
11868 }
11869 if (ret == 0 && arg3 != 0) {
11870 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
11871 }
11872 }
11873 return ret;
11874 #endif
11875
11876 #ifdef CONFIG_SPLICE
11877 #ifdef TARGET_NR_tee
11878 case TARGET_NR_tee:
11879 {
11880 ret = get_errno(tee(arg1,arg2,arg3,arg4));
11881 }
11882 return ret;
11883 #endif
11884 #ifdef TARGET_NR_splice
11885 case TARGET_NR_splice:
11886 {
11887 loff_t loff_in, loff_out;
11888 loff_t *ploff_in = NULL, *ploff_out = NULL;
11889 if (arg2) {
11890 if (get_user_u64(loff_in, arg2)) {
11891 return -TARGET_EFAULT;
11892 }
11893 ploff_in = &loff_in;
11894 }
11895 if (arg4) {
11896 if (get_user_u64(loff_out, arg4)) {
11897 return -TARGET_EFAULT;
11898 }
11899 ploff_out = &loff_out;
11900 }
11901 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
11902 if (arg2) {
11903 if (put_user_u64(loff_in, arg2)) {
11904 return -TARGET_EFAULT;
11905 }
11906 }
11907 if (arg4) {
11908 if (put_user_u64(loff_out, arg4)) {
11909 return -TARGET_EFAULT;
11910 }
11911 }
11912 }
11913 return ret;
11914 #endif
11915 #ifdef TARGET_NR_vmsplice
11916 case TARGET_NR_vmsplice:
11917 {
11918 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11919 if (vec != NULL) {
11920 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
11921 unlock_iovec(vec, arg2, arg3, 0);
11922 } else {
11923 ret = -host_to_target_errno(errno);
11924 }
11925 }
11926 return ret;
11927 #endif
11928 #endif /* CONFIG_SPLICE */
11929 #ifdef CONFIG_EVENTFD
11930 #if defined(TARGET_NR_eventfd)
11931 case TARGET_NR_eventfd:
11932 ret = get_errno(eventfd(arg1, 0));
11933 if (ret >= 0) {
11934 fd_trans_register(ret, &target_eventfd_trans);
11935 }
11936 return ret;
11937 #endif
11938 #if defined(TARGET_NR_eventfd2)
11939 case TARGET_NR_eventfd2:
11940 {
11941 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
11942 if (arg2 & TARGET_O_NONBLOCK) {
11943 host_flags |= O_NONBLOCK;
11944 }
11945 if (arg2 & TARGET_O_CLOEXEC) {
11946 host_flags |= O_CLOEXEC;
11947 }
11948 ret = get_errno(eventfd(arg1, host_flags));
11949 if (ret >= 0) {
11950 fd_trans_register(ret, &target_eventfd_trans);
11951 }
11952 return ret;
11953 }
11954 #endif
11955 #endif /* CONFIG_EVENTFD */
11956 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
11957 case TARGET_NR_fallocate:
11958 #if TARGET_ABI_BITS == 32
11959 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
11960 target_offset64(arg5, arg6)));
11961 #else
11962 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
11963 #endif
11964 return ret;
11965 #endif
11966 #if defined(CONFIG_SYNC_FILE_RANGE)
11967 #if defined(TARGET_NR_sync_file_range)
11968 case TARGET_NR_sync_file_range:
11969 #if TARGET_ABI_BITS == 32
11970 #if defined(TARGET_MIPS)
11971 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11972 target_offset64(arg5, arg6), arg7));
11973 #else
11974 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
11975 target_offset64(arg4, arg5), arg6));
11976 #endif /* !TARGET_MIPS */
11977 #else
11978 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
11979 #endif
11980 return ret;
11981 #endif
11982 #if defined(TARGET_NR_sync_file_range2) || \
11983 defined(TARGET_NR_arm_sync_file_range)
11984 #if defined(TARGET_NR_sync_file_range2)
11985 case TARGET_NR_sync_file_range2:
11986 #endif
11987 #if defined(TARGET_NR_arm_sync_file_range)
11988 case TARGET_NR_arm_sync_file_range:
11989 #endif
11990 /* This is like sync_file_range but the arguments are reordered */
11991 #if TARGET_ABI_BITS == 32
11992 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11993 target_offset64(arg5, arg6), arg2));
11994 #else
11995 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
11996 #endif
11997 return ret;
11998 #endif
11999 #endif
12000 #if defined(TARGET_NR_signalfd4)
12001 case TARGET_NR_signalfd4:
12002 return do_signalfd4(arg1, arg2, arg4);
12003 #endif
12004 #if defined(TARGET_NR_signalfd)
12005 case TARGET_NR_signalfd:
12006 return do_signalfd4(arg1, arg2, 0);
12007 #endif
12008 #if defined(CONFIG_EPOLL)
12009 #if defined(TARGET_NR_epoll_create)
12010 case TARGET_NR_epoll_create:
12011 return get_errno(epoll_create(arg1));
12012 #endif
12013 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
12014 case TARGET_NR_epoll_create1:
12015 return get_errno(epoll_create1(target_to_host_bitmask(arg1, fcntl_flags_tbl)));
12016 #endif
12017 #if defined(TARGET_NR_epoll_ctl)
12018 case TARGET_NR_epoll_ctl:
12019 {
12020 struct epoll_event ep;
12021 struct epoll_event *epp = 0;
12022 if (arg4) {
12023 struct target_epoll_event *target_ep;
12024 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
12025 return -TARGET_EFAULT;
12026 }
12027 ep.events = tswap32(target_ep->events);
12028 /* The epoll_data_t union is just opaque data to the kernel,
12029 * so we transfer all 64 bits across and need not worry what
12030 * actual data type it is.
12031 */
12032 ep.data.u64 = tswap64(target_ep->data.u64);
12033 unlock_user_struct(target_ep, arg4, 0);
12034 epp = &ep;
12035 }
12036 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
12037 }
12038 #endif
12039
12040 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
12041 #if defined(TARGET_NR_epoll_wait)
12042 case TARGET_NR_epoll_wait:
12043 #endif
12044 #if defined(TARGET_NR_epoll_pwait)
12045 case TARGET_NR_epoll_pwait:
12046 #endif
12047 {
12048 struct target_epoll_event *target_ep;
12049 struct epoll_event *ep;
12050 int epfd = arg1;
12051 int maxevents = arg3;
12052 int timeout = arg4;
12053
12054 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
12055 return -TARGET_EINVAL;
12056 }
12057
12058 target_ep = lock_user(VERIFY_WRITE, arg2,
12059 maxevents * sizeof(struct target_epoll_event), 1);
12060 if (!target_ep) {
12061 return -TARGET_EFAULT;
12062 }
12063
12064 ep = g_try_new(struct epoll_event, maxevents);
12065 if (!ep) {
12066 unlock_user(target_ep, arg2, 0);
12067 return -TARGET_ENOMEM;
12068 }
12069
12070 switch (num) {
12071 #if defined(TARGET_NR_epoll_pwait)
12072 case TARGET_NR_epoll_pwait:
12073 {
12074 target_sigset_t *target_set;
12075 sigset_t _set, *set = &_set;
12076
12077 if (arg5) {
12078 if (arg6 != sizeof(target_sigset_t)) {
12079 ret = -TARGET_EINVAL;
12080 break;
12081 }
12082
12083 target_set = lock_user(VERIFY_READ, arg5,
12084 sizeof(target_sigset_t), 1);
12085 if (!target_set) {
12086 ret = -TARGET_EFAULT;
12087 break;
12088 }
12089 target_to_host_sigset(set, target_set);
12090 unlock_user(target_set, arg5, 0);
12091 } else {
12092 set = NULL;
12093 }
12094
12095 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12096 set, SIGSET_T_SIZE));
12097 break;
12098 }
12099 #endif
12100 #if defined(TARGET_NR_epoll_wait)
12101 case TARGET_NR_epoll_wait:
12102 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
12103 NULL, 0));
12104 break;
12105 #endif
12106 default:
12107 ret = -TARGET_ENOSYS;
12108 }
12109 if (!is_error(ret)) {
12110 int i;
12111 for (i = 0; i < ret; i++) {
12112 target_ep[i].events = tswap32(ep[i].events);
12113 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
12114 }
12115 unlock_user(target_ep, arg2,
12116 ret * sizeof(struct target_epoll_event));
12117 } else {
12118 unlock_user(target_ep, arg2, 0);
12119 }
12120 g_free(ep);
12121 return ret;
12122 }
12123 #endif
12124 #endif
12125 #ifdef TARGET_NR_prlimit64
12126 case TARGET_NR_prlimit64:
12127 {
12128 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
12129 struct target_rlimit64 *target_rnew, *target_rold;
12130 struct host_rlimit64 rnew, rold, *rnewp = 0;
12131 int resource = target_to_host_resource(arg2);
12132
12133 if (arg3 && (resource != RLIMIT_AS &&
12134 resource != RLIMIT_DATA &&
12135 resource != RLIMIT_STACK)) {
12136 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
12137 return -TARGET_EFAULT;
12138 }
12139 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
12140 rnew.rlim_max = tswap64(target_rnew->rlim_max);
12141 unlock_user_struct(target_rnew, arg3, 0);
12142 rnewp = &rnew;
12143 }
12144
12145 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
12146 if (!is_error(ret) && arg4) {
12147 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
12148 return -TARGET_EFAULT;
12149 }
12150 target_rold->rlim_cur = tswap64(rold.rlim_cur);
12151 target_rold->rlim_max = tswap64(rold.rlim_max);
12152 unlock_user_struct(target_rold, arg4, 1);
12153 }
12154 return ret;
12155 }
12156 #endif
12157 #ifdef TARGET_NR_gethostname
12158 case TARGET_NR_gethostname:
12159 {
12160 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
12161 if (name) {
12162 ret = get_errno(gethostname(name, arg2));
12163 unlock_user(name, arg1, arg2);
12164 } else {
12165 ret = -TARGET_EFAULT;
12166 }
12167 return ret;
12168 }
12169 #endif
12170 #ifdef TARGET_NR_atomic_cmpxchg_32
12171 case TARGET_NR_atomic_cmpxchg_32:
12172 {
12173 /* should use start_exclusive from main.c */
12174 abi_ulong mem_value;
12175 if (get_user_u32(mem_value, arg6)) {
12176 target_siginfo_t info;
12177 info.si_signo = SIGSEGV;
12178 info.si_errno = 0;
12179 info.si_code = TARGET_SEGV_MAPERR;
12180 info._sifields._sigfault._addr = arg6;
12181 queue_signal((CPUArchState *)cpu_env, info.si_signo,
12182 QEMU_SI_FAULT, &info);
12183 ret = 0xdeadbeef;
12184
12185 }
12186 if (mem_value == arg2)
12187 put_user_u32(arg1, arg6);
12188 return mem_value;
12189 }
12190 #endif
12191 #ifdef TARGET_NR_atomic_barrier
12192 case TARGET_NR_atomic_barrier:
12193 /* Like the kernel implementation and the
12194 qemu arm barrier, no-op this? */
12195 return 0;
12196 #endif
12197
12198 #ifdef TARGET_NR_timer_create
12199 case TARGET_NR_timer_create:
12200 {
12201 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
12202
12203 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
12204
12205 int clkid = arg1;
12206 int timer_index = next_free_host_timer();
12207
12208 if (timer_index < 0) {
12209 ret = -TARGET_EAGAIN;
12210 } else {
12211 timer_t *phtimer = g_posix_timers + timer_index;
12212
12213 if (arg2) {
12214 phost_sevp = &host_sevp;
12215 ret = target_to_host_sigevent(phost_sevp, arg2);
12216 if (ret != 0) {
12217 return ret;
12218 }
12219 }
12220
12221 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
12222 if (ret) {
12223 phtimer = NULL;
12224 } else {
12225 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
12226 return -TARGET_EFAULT;
12227 }
12228 }
12229 }
12230 return ret;
12231 }
12232 #endif
12233
12234 #ifdef TARGET_NR_timer_settime
12235 case TARGET_NR_timer_settime:
12236 {
12237 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
12238 * struct itimerspec * old_value */
12239 target_timer_t timerid = get_timer_id(arg1);
12240
12241 if (timerid < 0) {
12242 ret = timerid;
12243 } else if (arg3 == 0) {
12244 ret = -TARGET_EINVAL;
12245 } else {
12246 timer_t htimer = g_posix_timers[timerid];
12247 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
12248
12249 if (target_to_host_itimerspec(&hspec_new, arg3)) {
12250 return -TARGET_EFAULT;
12251 }
12252 ret = get_errno(
12253 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
12254 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
12255 return -TARGET_EFAULT;
12256 }
12257 }
12258 return ret;
12259 }
12260 #endif
12261
12262 #ifdef TARGET_NR_timer_gettime
12263 case TARGET_NR_timer_gettime:
12264 {
12265 /* args: timer_t timerid, struct itimerspec *curr_value */
12266 target_timer_t timerid = get_timer_id(arg1);
12267
12268 if (timerid < 0) {
12269 ret = timerid;
12270 } else if (!arg2) {
12271 ret = -TARGET_EFAULT;
12272 } else {
12273 timer_t htimer = g_posix_timers[timerid];
12274 struct itimerspec hspec;
12275 ret = get_errno(timer_gettime(htimer, &hspec));
12276
12277 if (host_to_target_itimerspec(arg2, &hspec)) {
12278 ret = -TARGET_EFAULT;
12279 }
12280 }
12281 return ret;
12282 }
12283 #endif
12284
12285 #ifdef TARGET_NR_timer_getoverrun
12286 case TARGET_NR_timer_getoverrun:
12287 {
12288 /* args: timer_t timerid */
12289 target_timer_t timerid = get_timer_id(arg1);
12290
12291 if (timerid < 0) {
12292 ret = timerid;
12293 } else {
12294 timer_t htimer = g_posix_timers[timerid];
12295 ret = get_errno(timer_getoverrun(htimer));
12296 }
12297 return ret;
12298 }
12299 #endif
12300
12301 #ifdef TARGET_NR_timer_delete
12302 case TARGET_NR_timer_delete:
12303 {
12304 /* args: timer_t timerid */
12305 target_timer_t timerid = get_timer_id(arg1);
12306
12307 if (timerid < 0) {
12308 ret = timerid;
12309 } else {
12310 timer_t htimer = g_posix_timers[timerid];
12311 ret = get_errno(timer_delete(htimer));
12312 g_posix_timers[timerid] = 0;
12313 }
12314 return ret;
12315 }
12316 #endif
12317
12318 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
12319 case TARGET_NR_timerfd_create:
12320 return get_errno(timerfd_create(arg1,
12321 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
12322 #endif
12323
12324 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
12325 case TARGET_NR_timerfd_gettime:
12326 {
12327 struct itimerspec its_curr;
12328
12329 ret = get_errno(timerfd_gettime(arg1, &its_curr));
12330
12331 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
12332 return -TARGET_EFAULT;
12333 }
12334 }
12335 return ret;
12336 #endif
12337
12338 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
12339 case TARGET_NR_timerfd_settime:
12340 {
12341 struct itimerspec its_new, its_old, *p_new;
12342
12343 if (arg3) {
12344 if (target_to_host_itimerspec(&its_new, arg3)) {
12345 return -TARGET_EFAULT;
12346 }
12347 p_new = &its_new;
12348 } else {
12349 p_new = NULL;
12350 }
12351
12352 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
12353
12354 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
12355 return -TARGET_EFAULT;
12356 }
12357 }
12358 return ret;
12359 #endif
12360
12361 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
12362 case TARGET_NR_ioprio_get:
12363 return get_errno(ioprio_get(arg1, arg2));
12364 #endif
12365
12366 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
12367 case TARGET_NR_ioprio_set:
12368 return get_errno(ioprio_set(arg1, arg2, arg3));
12369 #endif
12370
12371 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
12372 case TARGET_NR_setns:
12373 return get_errno(setns(arg1, arg2));
12374 #endif
12375 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
12376 case TARGET_NR_unshare:
12377 return get_errno(unshare(arg1));
12378 #endif
12379 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
12380 case TARGET_NR_kcmp:
12381 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
12382 #endif
12383 #ifdef TARGET_NR_swapcontext
12384 case TARGET_NR_swapcontext:
12385 /* PowerPC specific. */
12386 return do_swapcontext(cpu_env, arg1, arg2, arg3);
12387 #endif
12388 #ifdef TARGET_NR_memfd_create
12389 case TARGET_NR_memfd_create:
12390 p = lock_user_string(arg1);
12391 if (!p) {
12392 return -TARGET_EFAULT;
12393 }
12394 ret = get_errno(memfd_create(p, arg2));
12395 fd_trans_unregister(ret);
12396 unlock_user(p, arg1, 0);
12397 return ret;
12398 #endif
12399 #if defined TARGET_NR_membarrier && defined __NR_membarrier
12400 case TARGET_NR_membarrier:
12401 return get_errno(membarrier(arg1, arg2));
12402 #endif
12403
12404 default:
12405 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
12406 return -TARGET_ENOSYS;
12407 }
12408 return ret;
12409 }
12410
12411 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
12412 abi_long arg2, abi_long arg3, abi_long arg4,
12413 abi_long arg5, abi_long arg6, abi_long arg7,
12414 abi_long arg8)
12415 {
12416 CPUState *cpu = env_cpu(cpu_env);
12417 abi_long ret;
12418
12419 #ifdef DEBUG_ERESTARTSYS
12420 /* Debug-only code for exercising the syscall-restart code paths
12421 * in the per-architecture cpu main loops: restart every syscall
12422 * the guest makes once before letting it through.
12423 */
12424 {
12425 static bool flag;
12426 flag = !flag;
12427 if (flag) {
12428 return -TARGET_ERESTARTSYS;
12429 }
12430 }
12431 #endif
12432
12433 record_syscall_start(cpu, num, arg1,
12434 arg2, arg3, arg4, arg5, arg6, arg7, arg8);
12435
12436 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
12437 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
12438 }
12439
12440 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
12441 arg5, arg6, arg7, arg8);
12442
12443 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) {
12444 print_syscall_ret(num, ret);
12445 }
12446
12447 record_syscall_return(cpu, num, ret);
12448 return ret;
12449 }
AR7 emulation for QEMU