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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-aug-20-2019' into...
[qemu/ar7.git] / linux-user / syscall.c
blob8b41a03901d497aea17d2093ab51a1d727a1b8cd
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/queue.h"
24 #include <elf.h>
25 #include <endian.h>
26 #include <grp.h>
27 #include <sys/ipc.h>
28 #include <sys/msg.h>
29 #include <sys/wait.h>
30 #include <sys/mount.h>
31 #include <sys/file.h>
32 #include <sys/fsuid.h>
33 #include <sys/personality.h>
34 #include <sys/prctl.h>
35 #include <sys/resource.h>
36 #include <sys/swap.h>
37 #include <linux/capability.h>
38 #include <sched.h>
39 #include <sys/timex.h>
40 #include <sys/socket.h>
41 #include <linux/sockios.h>
42 #include <sys/un.h>
43 #include <sys/uio.h>
44 #include <poll.h>
45 #include <sys/times.h>
46 #include <sys/shm.h>
47 #include <sys/sem.h>
48 #include <sys/statfs.h>
49 #include <utime.h>
50 #include <sys/sysinfo.h>
51 #include <sys/signalfd.h>
52 //#include <sys/user.h>
53 #include <netinet/ip.h>
54 #include <netinet/tcp.h>
55 #include <linux/wireless.h>
56 #include <linux/icmp.h>
57 #include <linux/icmpv6.h>
58 #include <linux/errqueue.h>
59 #include <linux/random.h>
60 #ifdef CONFIG_TIMERFD
61 #include <sys/timerfd.h>
62 #endif
63 #ifdef CONFIG_EVENTFD
64 #include <sys/eventfd.h>
65 #endif
66 #ifdef CONFIG_EPOLL
67 #include <sys/epoll.h>
68 #endif
69 #ifdef CONFIG_ATTR
70 #include "qemu/xattr.h"
71 #endif
72 #ifdef CONFIG_SENDFILE
73 #include <sys/sendfile.h>
74 #endif
75
76 #define termios host_termios
77 #define winsize host_winsize
78 #define termio host_termio
79 #define sgttyb host_sgttyb /* same as target */
80 #define tchars host_tchars /* same as target */
81 #define ltchars host_ltchars /* same as target */
82
83 #include <linux/termios.h>
84 #include <linux/unistd.h>
85 #include <linux/cdrom.h>
86 #include <linux/hdreg.h>
87 #include <linux/soundcard.h>
88 #include <linux/kd.h>
89 #include <linux/mtio.h>
90 #include <linux/fs.h>
91 #if defined(CONFIG_FIEMAP)
92 #include <linux/fiemap.h>
93 #endif
94 #include <linux/fb.h>
95 #if defined(CONFIG_USBFS)
96 #include <linux/usbdevice_fs.h>
97 #include <linux/usb/ch9.h>
98 #endif
99 #include <linux/vt.h>
100 #include <linux/dm-ioctl.h>
101 #include <linux/reboot.h>
102 #include <linux/route.h>
103 #include <linux/filter.h>
104 #include <linux/blkpg.h>
105 #include <netpacket/packet.h>
106 #include <linux/netlink.h>
107 #include <linux/if_alg.h>
108 #include "linux_loop.h"
109 #include "uname.h"
110
111 #include "qemu.h"
112 #include "qemu/guest-random.h"
113 #include "qapi/error.h"
114 #include "fd-trans.h"
115
116 #ifndef CLONE_IO
117 #define CLONE_IO 0x80000000 /* Clone io context */
118 #endif
119
120 /* We can't directly call the host clone syscall, because this will
121 * badly confuse libc (breaking mutexes, for example). So we must
122 * divide clone flags into:
123 * * flag combinations that look like pthread_create()
124 * * flag combinations that look like fork()
125 * * flags we can implement within QEMU itself
126 * * flags we can't support and will return an error for
127 */
128 /* For thread creation, all these flags must be present; for
129 * fork, none must be present.
130 */
131 #define CLONE_THREAD_FLAGS \
132 (CLONE_VM | CLONE_FS | CLONE_FILES | \
133 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
134
135 /* These flags are ignored:
136 * CLONE_DETACHED is now ignored by the kernel;
137 * CLONE_IO is just an optimisation hint to the I/O scheduler
138 */
139 #define CLONE_IGNORED_FLAGS \
140 (CLONE_DETACHED | CLONE_IO)
141
142 /* Flags for fork which we can implement within QEMU itself */
143 #define CLONE_OPTIONAL_FORK_FLAGS \
144 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
145 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
146
147 /* Flags for thread creation which we can implement within QEMU itself */
148 #define CLONE_OPTIONAL_THREAD_FLAGS \
149 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
150 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
151
152 #define CLONE_INVALID_FORK_FLAGS \
153 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
154
155 #define CLONE_INVALID_THREAD_FLAGS \
156 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
157 CLONE_IGNORED_FLAGS))
158
159 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
160 * have almost all been allocated. We cannot support any of
161 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
162 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
163 * The checks against the invalid thread masks above will catch these.
164 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
165 */
166
167 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
168 * once. This exercises the codepaths for restart.
169 */
170 //#define DEBUG_ERESTARTSYS
171
172 //#include <linux/msdos_fs.h>
173 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
174 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
175
176 #undef _syscall0
177 #undef _syscall1
178 #undef _syscall2
179 #undef _syscall3
180 #undef _syscall4
181 #undef _syscall5
182 #undef _syscall6
183
184 #define _syscall0(type,name) \
185 static type name (void) \
186 { \
187 return syscall(__NR_##name); \
188 }
189
190 #define _syscall1(type,name,type1,arg1) \
191 static type name (type1 arg1) \
192 { \
193 return syscall(__NR_##name, arg1); \
194 }
195
196 #define _syscall2(type,name,type1,arg1,type2,arg2) \
197 static type name (type1 arg1,type2 arg2) \
198 { \
199 return syscall(__NR_##name, arg1, arg2); \
200 }
201
202 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
203 static type name (type1 arg1,type2 arg2,type3 arg3) \
204 { \
205 return syscall(__NR_##name, arg1, arg2, arg3); \
206 }
207
208 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
209 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
210 { \
211 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
212 }
213
214 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
215 type5,arg5) \
216 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
217 { \
218 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
219 }
220
221
222 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
223 type5,arg5,type6,arg6) \
224 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
225 type6 arg6) \
226 { \
227 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
228 }
229
230
231 #define __NR_sys_uname __NR_uname
232 #define __NR_sys_getcwd1 __NR_getcwd
233 #define __NR_sys_getdents __NR_getdents
234 #define __NR_sys_getdents64 __NR_getdents64
235 #define __NR_sys_getpriority __NR_getpriority
236 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
237 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
238 #define __NR_sys_syslog __NR_syslog
239 #define __NR_sys_futex __NR_futex
240 #define __NR_sys_inotify_init __NR_inotify_init
241 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
242 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
243 #define __NR_sys_statx __NR_statx
244
245 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
246 #define __NR__llseek __NR_lseek
247 #endif
248
249 /* Newer kernel ports have llseek() instead of _llseek() */
250 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
251 #define TARGET_NR__llseek TARGET_NR_llseek
252 #endif
253
254 #define __NR_sys_gettid __NR_gettid
255 _syscall0(int, sys_gettid)
256
257 /* For the 64-bit guest on 32-bit host case we must emulate
258 * getdents using getdents64, because otherwise the host
259 * might hand us back more dirent records than we can fit
260 * into the guest buffer after structure format conversion.
261 * Otherwise we emulate getdents with getdents if the host has it.
262 */
263 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
264 #define EMULATE_GETDENTS_WITH_GETDENTS
265 #endif
266
267 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
268 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
269 #endif
270 #if (defined(TARGET_NR_getdents) && \
271 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
272 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
273 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
274 #endif
275 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
276 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
277 loff_t *, res, uint, wh);
278 #endif
279 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
280 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
281 siginfo_t *, uinfo)
282 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
283 #ifdef __NR_exit_group
284 _syscall1(int,exit_group,int,error_code)
285 #endif
286 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
287 _syscall1(int,set_tid_address,int *,tidptr)
288 #endif
289 #if defined(TARGET_NR_futex) && defined(__NR_futex)
290 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
291 const struct timespec *,timeout,int *,uaddr2,int,val3)
292 #endif
293 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
294 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
295 unsigned long *, user_mask_ptr);
296 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
297 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
298 unsigned long *, user_mask_ptr);
299 #define __NR_sys_getcpu __NR_getcpu
300 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
301 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
302 void *, arg);
303 _syscall2(int, capget, struct __user_cap_header_struct *, header,
304 struct __user_cap_data_struct *, data);
305 _syscall2(int, capset, struct __user_cap_header_struct *, header,
306 struct __user_cap_data_struct *, data);
307 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
308 _syscall2(int, ioprio_get, int, which, int, who)
309 #endif
310 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
311 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
312 #endif
313 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
314 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
315 #endif
316
317 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
318 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
319 unsigned long, idx1, unsigned long, idx2)
320 #endif
321
322 /*
323 * It is assumed that struct statx is architecture independent.
324 */
325 #if defined(TARGET_NR_statx) && defined(__NR_statx)
326 _syscall5(int, sys_statx, int, dirfd, const char *, pathname, int, flags,
327 unsigned int, mask, struct target_statx *, statxbuf)
328 #endif
329
330 static bitmask_transtbl fcntl_flags_tbl[] = {
331 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
332 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
333 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
334 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
335 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
336 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
337 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
338 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
339 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
340 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
341 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
342 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
343 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
344 #if defined(O_DIRECT)
345 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
346 #endif
347 #if defined(O_NOATIME)
348 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
349 #endif
350 #if defined(O_CLOEXEC)
351 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
352 #endif
353 #if defined(O_PATH)
354 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
355 #endif
356 #if defined(O_TMPFILE)
357 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
358 #endif
359 /* Don't terminate the list prematurely on 64-bit host+guest. */
360 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
361 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
362 #endif
363 { 0, 0, 0, 0 }
364 };
365
366 static int sys_getcwd1(char *buf, size_t size)
367 {
368 if (getcwd(buf, size) == NULL) {
369 /* getcwd() sets errno */
370 return (-1);
371 }
372 return strlen(buf)+1;
373 }
374
375 #ifdef TARGET_NR_utimensat
376 #if defined(__NR_utimensat)
377 #define __NR_sys_utimensat __NR_utimensat
378 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
379 const struct timespec *,tsp,int,flags)
380 #else
381 static int sys_utimensat(int dirfd, const char *pathname,
382 const struct timespec times[2], int flags)
383 {
384 errno = ENOSYS;
385 return -1;
386 }
387 #endif
388 #endif /* TARGET_NR_utimensat */
389
390 #ifdef TARGET_NR_renameat2
391 #if defined(__NR_renameat2)
392 #define __NR_sys_renameat2 __NR_renameat2
393 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
394 const char *, new, unsigned int, flags)
395 #else
396 static int sys_renameat2(int oldfd, const char *old,
397 int newfd, const char *new, int flags)
398 {
399 if (flags == 0) {
400 return renameat(oldfd, old, newfd, new);
401 }
402 errno = ENOSYS;
403 return -1;
404 }
405 #endif
406 #endif /* TARGET_NR_renameat2 */
407
408 #ifdef CONFIG_INOTIFY
409 #include <sys/inotify.h>
410
411 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
412 static int sys_inotify_init(void)
413 {
414 return (inotify_init());
415 }
416 #endif
417 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
418 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
419 {
420 return (inotify_add_watch(fd, pathname, mask));
421 }
422 #endif
423 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
424 static int sys_inotify_rm_watch(int fd, int32_t wd)
425 {
426 return (inotify_rm_watch(fd, wd));
427 }
428 #endif
429 #ifdef CONFIG_INOTIFY1
430 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
431 static int sys_inotify_init1(int flags)
432 {
433 return (inotify_init1(flags));
434 }
435 #endif
436 #endif
437 #else
438 /* Userspace can usually survive runtime without inotify */
439 #undef TARGET_NR_inotify_init
440 #undef TARGET_NR_inotify_init1
441 #undef TARGET_NR_inotify_add_watch
442 #undef TARGET_NR_inotify_rm_watch
443 #endif /* CONFIG_INOTIFY */
444
445 #if defined(TARGET_NR_prlimit64)
446 #ifndef __NR_prlimit64
447 # define __NR_prlimit64 -1
448 #endif
449 #define __NR_sys_prlimit64 __NR_prlimit64
450 /* The glibc rlimit structure may not be that used by the underlying syscall */
451 struct host_rlimit64 {
452 uint64_t rlim_cur;
453 uint64_t rlim_max;
454 };
455 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
456 const struct host_rlimit64 *, new_limit,
457 struct host_rlimit64 *, old_limit)
458 #endif
459
460
461 #if defined(TARGET_NR_timer_create)
462 /* Maxiumum of 32 active POSIX timers allowed at any one time. */
463 static timer_t g_posix_timers[32] = { 0, } ;
464
465 static inline int next_free_host_timer(void)
466 {
467 int k ;
468 /* FIXME: Does finding the next free slot require a lock? */
469 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
470 if (g_posix_timers[k] == 0) {
471 g_posix_timers[k] = (timer_t) 1;
472 return k;
473 }
474 }
475 return -1;
476 }
477 #endif
478
479 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
480 #ifdef TARGET_ARM
481 static inline int regpairs_aligned(void *cpu_env, int num)
482 {
483 return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
484 }
485 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
486 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
487 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
488 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
489 * of registers which translates to the same as ARM/MIPS, because we start with
490 * r3 as arg1 */
491 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
492 #elif defined(TARGET_SH4)
493 /* SH4 doesn't align register pairs, except for p{read,write}64 */
494 static inline int regpairs_aligned(void *cpu_env, int num)
495 {
496 switch (num) {
497 case TARGET_NR_pread64:
498 case TARGET_NR_pwrite64:
499 return 1;
500
501 default:
502 return 0;
503 }
504 }
505 #elif defined(TARGET_XTENSA)
506 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
507 #else
508 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; }
509 #endif
510
511 #define ERRNO_TABLE_SIZE 1200
512
513 /* target_to_host_errno_table[] is initialized from
514 * host_to_target_errno_table[] in syscall_init(). */
515 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
516 };
517
518 /*
519 * This list is the union of errno values overridden in asm-<arch>/errno.h
520 * minus the errnos that are not actually generic to all archs.
521 */
522 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
523 [EAGAIN] = TARGET_EAGAIN,
524 [EIDRM] = TARGET_EIDRM,
525 [ECHRNG] = TARGET_ECHRNG,
526 [EL2NSYNC] = TARGET_EL2NSYNC,
527 [EL3HLT] = TARGET_EL3HLT,
528 [EL3RST] = TARGET_EL3RST,
529 [ELNRNG] = TARGET_ELNRNG,
530 [EUNATCH] = TARGET_EUNATCH,
531 [ENOCSI] = TARGET_ENOCSI,
532 [EL2HLT] = TARGET_EL2HLT,
533 [EDEADLK] = TARGET_EDEADLK,
534 [ENOLCK] = TARGET_ENOLCK,
535 [EBADE] = TARGET_EBADE,
536 [EBADR] = TARGET_EBADR,
537 [EXFULL] = TARGET_EXFULL,
538 [ENOANO] = TARGET_ENOANO,
539 [EBADRQC] = TARGET_EBADRQC,
540 [EBADSLT] = TARGET_EBADSLT,
541 [EBFONT] = TARGET_EBFONT,
542 [ENOSTR] = TARGET_ENOSTR,
543 [ENODATA] = TARGET_ENODATA,
544 [ETIME] = TARGET_ETIME,
545 [ENOSR] = TARGET_ENOSR,
546 [ENONET] = TARGET_ENONET,
547 [ENOPKG] = TARGET_ENOPKG,
548 [EREMOTE] = TARGET_EREMOTE,
549 [ENOLINK] = TARGET_ENOLINK,
550 [EADV] = TARGET_EADV,
551 [ESRMNT] = TARGET_ESRMNT,
552 [ECOMM] = TARGET_ECOMM,
553 [EPROTO] = TARGET_EPROTO,
554 [EDOTDOT] = TARGET_EDOTDOT,
555 [EMULTIHOP] = TARGET_EMULTIHOP,
556 [EBADMSG] = TARGET_EBADMSG,
557 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
558 [EOVERFLOW] = TARGET_EOVERFLOW,
559 [ENOTUNIQ] = TARGET_ENOTUNIQ,
560 [EBADFD] = TARGET_EBADFD,
561 [EREMCHG] = TARGET_EREMCHG,
562 [ELIBACC] = TARGET_ELIBACC,
563 [ELIBBAD] = TARGET_ELIBBAD,
564 [ELIBSCN] = TARGET_ELIBSCN,
565 [ELIBMAX] = TARGET_ELIBMAX,
566 [ELIBEXEC] = TARGET_ELIBEXEC,
567 [EILSEQ] = TARGET_EILSEQ,
568 [ENOSYS] = TARGET_ENOSYS,
569 [ELOOP] = TARGET_ELOOP,
570 [ERESTART] = TARGET_ERESTART,
571 [ESTRPIPE] = TARGET_ESTRPIPE,
572 [ENOTEMPTY] = TARGET_ENOTEMPTY,
573 [EUSERS] = TARGET_EUSERS,
574 [ENOTSOCK] = TARGET_ENOTSOCK,
575 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
576 [EMSGSIZE] = TARGET_EMSGSIZE,
577 [EPROTOTYPE] = TARGET_EPROTOTYPE,
578 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
579 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
580 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
581 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
582 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
583 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
584 [EADDRINUSE] = TARGET_EADDRINUSE,
585 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
586 [ENETDOWN] = TARGET_ENETDOWN,
587 [ENETUNREACH] = TARGET_ENETUNREACH,
588 [ENETRESET] = TARGET_ENETRESET,
589 [ECONNABORTED] = TARGET_ECONNABORTED,
590 [ECONNRESET] = TARGET_ECONNRESET,
591 [ENOBUFS] = TARGET_ENOBUFS,
592 [EISCONN] = TARGET_EISCONN,
593 [ENOTCONN] = TARGET_ENOTCONN,
594 [EUCLEAN] = TARGET_EUCLEAN,
595 [ENOTNAM] = TARGET_ENOTNAM,
596 [ENAVAIL] = TARGET_ENAVAIL,
597 [EISNAM] = TARGET_EISNAM,
598 [EREMOTEIO] = TARGET_EREMOTEIO,
599 [EDQUOT] = TARGET_EDQUOT,
600 [ESHUTDOWN] = TARGET_ESHUTDOWN,
601 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
602 [ETIMEDOUT] = TARGET_ETIMEDOUT,
603 [ECONNREFUSED] = TARGET_ECONNREFUSED,
604 [EHOSTDOWN] = TARGET_EHOSTDOWN,
605 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
606 [EALREADY] = TARGET_EALREADY,
607 [EINPROGRESS] = TARGET_EINPROGRESS,
608 [ESTALE] = TARGET_ESTALE,
609 [ECANCELED] = TARGET_ECANCELED,
610 [ENOMEDIUM] = TARGET_ENOMEDIUM,
611 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
612 #ifdef ENOKEY
613 [ENOKEY] = TARGET_ENOKEY,
614 #endif
615 #ifdef EKEYEXPIRED
616 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
617 #endif
618 #ifdef EKEYREVOKED
619 [EKEYREVOKED] = TARGET_EKEYREVOKED,
620 #endif
621 #ifdef EKEYREJECTED
622 [EKEYREJECTED] = TARGET_EKEYREJECTED,
623 #endif
624 #ifdef EOWNERDEAD
625 [EOWNERDEAD] = TARGET_EOWNERDEAD,
626 #endif
627 #ifdef ENOTRECOVERABLE
628 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
629 #endif
630 #ifdef ENOMSG
631 [ENOMSG] = TARGET_ENOMSG,
632 #endif
633 #ifdef ERKFILL
634 [ERFKILL] = TARGET_ERFKILL,
635 #endif
636 #ifdef EHWPOISON
637 [EHWPOISON] = TARGET_EHWPOISON,
638 #endif
639 };
640
641 static inline int host_to_target_errno(int err)
642 {
643 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
644 host_to_target_errno_table[err]) {
645 return host_to_target_errno_table[err];
646 }
647 return err;
648 }
649
650 static inline int target_to_host_errno(int err)
651 {
652 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
653 target_to_host_errno_table[err]) {
654 return target_to_host_errno_table[err];
655 }
656 return err;
657 }
658
659 static inline abi_long get_errno(abi_long ret)
660 {
661 if (ret == -1)
662 return -host_to_target_errno(errno);
663 else
664 return ret;
665 }
666
667 const char *target_strerror(int err)
668 {
669 if (err == TARGET_ERESTARTSYS) {
670 return "To be restarted";
671 }
672 if (err == TARGET_QEMU_ESIGRETURN) {
673 return "Successful exit from sigreturn";
674 }
675
676 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
677 return NULL;
678 }
679 return strerror(target_to_host_errno(err));
680 }
681
682 #define safe_syscall0(type, name) \
683 static type safe_##name(void) \
684 { \
685 return safe_syscall(__NR_##name); \
686 }
687
688 #define safe_syscall1(type, name, type1, arg1) \
689 static type safe_##name(type1 arg1) \
690 { \
691 return safe_syscall(__NR_##name, arg1); \
692 }
693
694 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
695 static type safe_##name(type1 arg1, type2 arg2) \
696 { \
697 return safe_syscall(__NR_##name, arg1, arg2); \
698 }
699
700 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
701 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
702 { \
703 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
704 }
705
706 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
707 type4, arg4) \
708 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
709 { \
710 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
711 }
712
713 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
714 type4, arg4, type5, arg5) \
715 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
716 type5 arg5) \
717 { \
718 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
719 }
720
721 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
722 type4, arg4, type5, arg5, type6, arg6) \
723 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
724 type5 arg5, type6 arg6) \
725 { \
726 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
727 }
728
729 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
730 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
731 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
732 int, flags, mode_t, mode)
733 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
734 struct rusage *, rusage)
735 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
736 int, options, struct rusage *, rusage)
737 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
738 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
739 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
740 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
741 struct timespec *, tsp, const sigset_t *, sigmask,
742 size_t, sigsetsize)
743 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
744 int, maxevents, int, timeout, const sigset_t *, sigmask,
745 size_t, sigsetsize)
746 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
747 const struct timespec *,timeout,int *,uaddr2,int,val3)
748 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
749 safe_syscall2(int, kill, pid_t, pid, int, sig)
750 safe_syscall2(int, tkill, int, tid, int, sig)
751 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
752 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
753 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
754 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
755 unsigned long, pos_l, unsigned long, pos_h)
756 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
757 unsigned long, pos_l, unsigned long, pos_h)
758 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
759 socklen_t, addrlen)
760 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
761 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
762 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
763 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
764 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
765 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
766 safe_syscall2(int, flock, int, fd, int, operation)
767 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
768 const struct timespec *, uts, size_t, sigsetsize)
769 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
770 int, flags)
771 safe_syscall2(int, nanosleep, const struct timespec *, req,
772 struct timespec *, rem)
773 #ifdef TARGET_NR_clock_nanosleep
774 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
775 const struct timespec *, req, struct timespec *, rem)
776 #endif
777 #ifdef __NR_ipc
778 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
779 void *, ptr, long, fifth)
780 #endif
781 #ifdef __NR_msgsnd
782 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
783 int, flags)
784 #endif
785 #ifdef __NR_msgrcv
786 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
787 long, msgtype, int, flags)
788 #endif
789 #ifdef __NR_semtimedop
790 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
791 unsigned, nsops, const struct timespec *, timeout)
792 #endif
793 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
794 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
795 size_t, len, unsigned, prio, const struct timespec *, timeout)
796 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
797 size_t, len, unsigned *, prio, const struct timespec *, timeout)
798 #endif
799 /* We do ioctl like this rather than via safe_syscall3 to preserve the
800 * "third argument might be integer or pointer or not present" behaviour of
801 * the libc function.
802 */
803 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
804 /* Similarly for fcntl. Note that callers must always:
805 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
806 * use the flock64 struct rather than unsuffixed flock
807 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
808 */
809 #ifdef __NR_fcntl64
810 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
811 #else
812 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
813 #endif
814
815 static inline int host_to_target_sock_type(int host_type)
816 {
817 int target_type;
818
819 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
820 case SOCK_DGRAM:
821 target_type = TARGET_SOCK_DGRAM;
822 break;
823 case SOCK_STREAM:
824 target_type = TARGET_SOCK_STREAM;
825 break;
826 default:
827 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
828 break;
829 }
830
831 #if defined(SOCK_CLOEXEC)
832 if (host_type & SOCK_CLOEXEC) {
833 target_type |= TARGET_SOCK_CLOEXEC;
834 }
835 #endif
836
837 #if defined(SOCK_NONBLOCK)
838 if (host_type & SOCK_NONBLOCK) {
839 target_type |= TARGET_SOCK_NONBLOCK;
840 }
841 #endif
842
843 return target_type;
844 }
845
846 static abi_ulong target_brk;
847 static abi_ulong target_original_brk;
848 static abi_ulong brk_page;
849
850 void target_set_brk(abi_ulong new_brk)
851 {
852 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
853 brk_page = HOST_PAGE_ALIGN(target_brk);
854 }
855
856 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
857 #define DEBUGF_BRK(message, args...)
858
859 /* do_brk() must return target values and target errnos. */
860 abi_long do_brk(abi_ulong new_brk)
861 {
862 abi_long mapped_addr;
863 abi_ulong new_alloc_size;
864
865 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
866
867 if (!new_brk) {
868 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
869 return target_brk;
870 }
871 if (new_brk < target_original_brk) {
872 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
873 target_brk);
874 return target_brk;
875 }
876
877 /* If the new brk is less than the highest page reserved to the
878 * target heap allocation, set it and we're almost done... */
879 if (new_brk <= brk_page) {
880 /* Heap contents are initialized to zero, as for anonymous
881 * mapped pages. */
882 if (new_brk > target_brk) {
883 memset(g2h(target_brk), 0, new_brk - target_brk);
884 }
885 target_brk = new_brk;
886 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
887 return target_brk;
888 }
889
890 /* We need to allocate more memory after the brk... Note that
891 * we don't use MAP_FIXED because that will map over the top of
892 * any existing mapping (like the one with the host libc or qemu
893 * itself); instead we treat "mapped but at wrong address" as
894 * a failure and unmap again.
895 */
896 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
897 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
898 PROT_READ|PROT_WRITE,
899 MAP_ANON|MAP_PRIVATE, 0, 0));
900
901 if (mapped_addr == brk_page) {
902 /* Heap contents are initialized to zero, as for anonymous
903 * mapped pages. Technically the new pages are already
904 * initialized to zero since they *are* anonymous mapped
905 * pages, however we have to take care with the contents that
906 * come from the remaining part of the previous page: it may
907 * contains garbage data due to a previous heap usage (grown
908 * then shrunken). */
909 memset(g2h(target_brk), 0, brk_page - target_brk);
910
911 target_brk = new_brk;
912 brk_page = HOST_PAGE_ALIGN(target_brk);
913 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
914 target_brk);
915 return target_brk;
916 } else if (mapped_addr != -1) {
917 /* Mapped but at wrong address, meaning there wasn't actually
918 * enough space for this brk.
919 */
920 target_munmap(mapped_addr, new_alloc_size);
921 mapped_addr = -1;
922 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
923 }
924 else {
925 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
926 }
927
928 #if defined(TARGET_ALPHA)
929 /* We (partially) emulate OSF/1 on Alpha, which requires we
930 return a proper errno, not an unchanged brk value. */
931 return -TARGET_ENOMEM;
932 #endif
933 /* For everything else, return the previous break. */
934 return target_brk;
935 }
936
937 static inline abi_long copy_from_user_fdset(fd_set *fds,
938 abi_ulong target_fds_addr,
939 int n)
940 {
941 int i, nw, j, k;
942 abi_ulong b, *target_fds;
943
944 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
945 if (!(target_fds = lock_user(VERIFY_READ,
946 target_fds_addr,
947 sizeof(abi_ulong) * nw,
948 1)))
949 return -TARGET_EFAULT;
950
951 FD_ZERO(fds);
952 k = 0;
953 for (i = 0; i < nw; i++) {
954 /* grab the abi_ulong */
955 __get_user(b, &target_fds[i]);
956 for (j = 0; j < TARGET_ABI_BITS; j++) {
957 /* check the bit inside the abi_ulong */
958 if ((b >> j) & 1)
959 FD_SET(k, fds);
960 k++;
961 }
962 }
963
964 unlock_user(target_fds, target_fds_addr, 0);
965
966 return 0;
967 }
968
969 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
970 abi_ulong target_fds_addr,
971 int n)
972 {
973 if (target_fds_addr) {
974 if (copy_from_user_fdset(fds, target_fds_addr, n))
975 return -TARGET_EFAULT;
976 *fds_ptr = fds;
977 } else {
978 *fds_ptr = NULL;
979 }
980 return 0;
981 }
982
983 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
984 const fd_set *fds,
985 int n)
986 {
987 int i, nw, j, k;
988 abi_long v;
989 abi_ulong *target_fds;
990
991 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
992 if (!(target_fds = lock_user(VERIFY_WRITE,
993 target_fds_addr,
994 sizeof(abi_ulong) * nw,
995 0)))
996 return -TARGET_EFAULT;
997
998 k = 0;
999 for (i = 0; i < nw; i++) {
1000 v = 0;
1001 for (j = 0; j < TARGET_ABI_BITS; j++) {
1002 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1003 k++;
1004 }
1005 __put_user(v, &target_fds[i]);
1006 }
1007
1008 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1009
1010 return 0;
1011 }
1012
1013 #if defined(__alpha__)
1014 #define HOST_HZ 1024
1015 #else
1016 #define HOST_HZ 100
1017 #endif
1018
1019 static inline abi_long host_to_target_clock_t(long ticks)
1020 {
1021 #if HOST_HZ == TARGET_HZ
1022 return ticks;
1023 #else
1024 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1025 #endif
1026 }
1027
1028 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1029 const struct rusage *rusage)
1030 {
1031 struct target_rusage *target_rusage;
1032
1033 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1034 return -TARGET_EFAULT;
1035 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1036 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1037 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1038 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1039 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1040 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1041 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1042 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1043 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1044 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1045 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1046 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1047 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1048 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1049 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1050 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1051 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1052 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1053 unlock_user_struct(target_rusage, target_addr, 1);
1054
1055 return 0;
1056 }
1057
1058 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1059 {
1060 abi_ulong target_rlim_swap;
1061 rlim_t result;
1062
1063 target_rlim_swap = tswapal(target_rlim);
1064 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1065 return RLIM_INFINITY;
1066
1067 result = target_rlim_swap;
1068 if (target_rlim_swap != (rlim_t)result)
1069 return RLIM_INFINITY;
1070
1071 return result;
1072 }
1073
1074 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1075 {
1076 abi_ulong target_rlim_swap;
1077 abi_ulong result;
1078
1079 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1080 target_rlim_swap = TARGET_RLIM_INFINITY;
1081 else
1082 target_rlim_swap = rlim;
1083 result = tswapal(target_rlim_swap);
1084
1085 return result;
1086 }
1087
1088 static inline int target_to_host_resource(int code)
1089 {
1090 switch (code) {
1091 case TARGET_RLIMIT_AS:
1092 return RLIMIT_AS;
1093 case TARGET_RLIMIT_CORE:
1094 return RLIMIT_CORE;
1095 case TARGET_RLIMIT_CPU:
1096 return RLIMIT_CPU;
1097 case TARGET_RLIMIT_DATA:
1098 return RLIMIT_DATA;
1099 case TARGET_RLIMIT_FSIZE:
1100 return RLIMIT_FSIZE;
1101 case TARGET_RLIMIT_LOCKS:
1102 return RLIMIT_LOCKS;
1103 case TARGET_RLIMIT_MEMLOCK:
1104 return RLIMIT_MEMLOCK;
1105 case TARGET_RLIMIT_MSGQUEUE:
1106 return RLIMIT_MSGQUEUE;
1107 case TARGET_RLIMIT_NICE:
1108 return RLIMIT_NICE;
1109 case TARGET_RLIMIT_NOFILE:
1110 return RLIMIT_NOFILE;
1111 case TARGET_RLIMIT_NPROC:
1112 return RLIMIT_NPROC;
1113 case TARGET_RLIMIT_RSS:
1114 return RLIMIT_RSS;
1115 case TARGET_RLIMIT_RTPRIO:
1116 return RLIMIT_RTPRIO;
1117 case TARGET_RLIMIT_SIGPENDING:
1118 return RLIMIT_SIGPENDING;
1119 case TARGET_RLIMIT_STACK:
1120 return RLIMIT_STACK;
1121 default:
1122 return code;
1123 }
1124 }
1125
1126 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1127 abi_ulong target_tv_addr)
1128 {
1129 struct target_timeval *target_tv;
1130
1131 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) {
1132 return -TARGET_EFAULT;
1133 }
1134
1135 __get_user(tv->tv_sec, &target_tv->tv_sec);
1136 __get_user(tv->tv_usec, &target_tv->tv_usec);
1137
1138 unlock_user_struct(target_tv, target_tv_addr, 0);
1139
1140 return 0;
1141 }
1142
1143 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1144 const struct timeval *tv)
1145 {
1146 struct target_timeval *target_tv;
1147
1148 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1149 return -TARGET_EFAULT;
1150 }
1151
1152 __put_user(tv->tv_sec, &target_tv->tv_sec);
1153 __put_user(tv->tv_usec, &target_tv->tv_usec);
1154
1155 unlock_user_struct(target_tv, target_tv_addr, 1);
1156
1157 return 0;
1158 }
1159
1160 static inline abi_long copy_to_user_timeval64(abi_ulong target_tv_addr,
1161 const struct timeval *tv)
1162 {
1163 struct target__kernel_sock_timeval *target_tv;
1164
1165 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) {
1166 return -TARGET_EFAULT;
1167 }
1168
1169 __put_user(tv->tv_sec, &target_tv->tv_sec);
1170 __put_user(tv->tv_usec, &target_tv->tv_usec);
1171
1172 unlock_user_struct(target_tv, target_tv_addr, 1);
1173
1174 return 0;
1175 }
1176
1177 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
1178 abi_ulong target_addr)
1179 {
1180 struct target_timespec *target_ts;
1181
1182 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) {
1183 return -TARGET_EFAULT;
1184 }
1185 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
1186 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1187 unlock_user_struct(target_ts, target_addr, 0);
1188 return 0;
1189 }
1190
1191 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
1192 struct timespec *host_ts)
1193 {
1194 struct target_timespec *target_ts;
1195
1196 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1197 return -TARGET_EFAULT;
1198 }
1199 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1200 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1201 unlock_user_struct(target_ts, target_addr, 1);
1202 return 0;
1203 }
1204
1205 static inline abi_long host_to_target_timespec64(abi_ulong target_addr,
1206 struct timespec *host_ts)
1207 {
1208 struct target__kernel_timespec *target_ts;
1209
1210 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) {
1211 return -TARGET_EFAULT;
1212 }
1213 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
1214 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
1215 unlock_user_struct(target_ts, target_addr, 1);
1216 return 0;
1217 }
1218
1219 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1220 abi_ulong target_tz_addr)
1221 {
1222 struct target_timezone *target_tz;
1223
1224 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1225 return -TARGET_EFAULT;
1226 }
1227
1228 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1229 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1230
1231 unlock_user_struct(target_tz, target_tz_addr, 0);
1232
1233 return 0;
1234 }
1235
1236 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1237 #include <mqueue.h>
1238
1239 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1240 abi_ulong target_mq_attr_addr)
1241 {
1242 struct target_mq_attr *target_mq_attr;
1243
1244 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1245 target_mq_attr_addr, 1))
1246 return -TARGET_EFAULT;
1247
1248 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1249 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1250 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1251 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1252
1253 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1254
1255 return 0;
1256 }
1257
1258 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1259 const struct mq_attr *attr)
1260 {
1261 struct target_mq_attr *target_mq_attr;
1262
1263 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1264 target_mq_attr_addr, 0))
1265 return -TARGET_EFAULT;
1266
1267 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1268 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1269 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1270 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1271
1272 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1273
1274 return 0;
1275 }
1276 #endif
1277
1278 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1279 /* do_select() must return target values and target errnos. */
1280 static abi_long do_select(int n,
1281 abi_ulong rfd_addr, abi_ulong wfd_addr,
1282 abi_ulong efd_addr, abi_ulong target_tv_addr)
1283 {
1284 fd_set rfds, wfds, efds;
1285 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1286 struct timeval tv;
1287 struct timespec ts, *ts_ptr;
1288 abi_long ret;
1289
1290 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1291 if (ret) {
1292 return ret;
1293 }
1294 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1295 if (ret) {
1296 return ret;
1297 }
1298 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1299 if (ret) {
1300 return ret;
1301 }
1302
1303 if (target_tv_addr) {
1304 if (copy_from_user_timeval(&tv, target_tv_addr))
1305 return -TARGET_EFAULT;
1306 ts.tv_sec = tv.tv_sec;
1307 ts.tv_nsec = tv.tv_usec * 1000;
1308 ts_ptr = &ts;
1309 } else {
1310 ts_ptr = NULL;
1311 }
1312
1313 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1314 ts_ptr, NULL));
1315
1316 if (!is_error(ret)) {
1317 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1318 return -TARGET_EFAULT;
1319 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1320 return -TARGET_EFAULT;
1321 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1322 return -TARGET_EFAULT;
1323
1324 if (target_tv_addr) {
1325 tv.tv_sec = ts.tv_sec;
1326 tv.tv_usec = ts.tv_nsec / 1000;
1327 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1328 return -TARGET_EFAULT;
1329 }
1330 }
1331 }
1332
1333 return ret;
1334 }
1335
1336 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1337 static abi_long do_old_select(abi_ulong arg1)
1338 {
1339 struct target_sel_arg_struct *sel;
1340 abi_ulong inp, outp, exp, tvp;
1341 long nsel;
1342
1343 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1344 return -TARGET_EFAULT;
1345 }
1346
1347 nsel = tswapal(sel->n);
1348 inp = tswapal(sel->inp);
1349 outp = tswapal(sel->outp);
1350 exp = tswapal(sel->exp);
1351 tvp = tswapal(sel->tvp);
1352
1353 unlock_user_struct(sel, arg1, 0);
1354
1355 return do_select(nsel, inp, outp, exp, tvp);
1356 }
1357 #endif
1358 #endif
1359
1360 static abi_long do_pipe2(int host_pipe[], int flags)
1361 {
1362 #ifdef CONFIG_PIPE2
1363 return pipe2(host_pipe, flags);
1364 #else
1365 return -ENOSYS;
1366 #endif
1367 }
1368
1369 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1370 int flags, int is_pipe2)
1371 {
1372 int host_pipe[2];
1373 abi_long ret;
1374 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1375
1376 if (is_error(ret))
1377 return get_errno(ret);
1378
1379 /* Several targets have special calling conventions for the original
1380 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1381 if (!is_pipe2) {
1382 #if defined(TARGET_ALPHA)
1383 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1384 return host_pipe[0];
1385 #elif defined(TARGET_MIPS)
1386 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1387 return host_pipe[0];
1388 #elif defined(TARGET_SH4)
1389 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1390 return host_pipe[0];
1391 #elif defined(TARGET_SPARC)
1392 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1393 return host_pipe[0];
1394 #endif
1395 }
1396
1397 if (put_user_s32(host_pipe[0], pipedes)
1398 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1399 return -TARGET_EFAULT;
1400 return get_errno(ret);
1401 }
1402
1403 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1404 abi_ulong target_addr,
1405 socklen_t len)
1406 {
1407 struct target_ip_mreqn *target_smreqn;
1408
1409 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1410 if (!target_smreqn)
1411 return -TARGET_EFAULT;
1412 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1413 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1414 if (len == sizeof(struct target_ip_mreqn))
1415 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1416 unlock_user(target_smreqn, target_addr, 0);
1417
1418 return 0;
1419 }
1420
1421 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1422 abi_ulong target_addr,
1423 socklen_t len)
1424 {
1425 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1426 sa_family_t sa_family;
1427 struct target_sockaddr *target_saddr;
1428
1429 if (fd_trans_target_to_host_addr(fd)) {
1430 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1431 }
1432
1433 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1434 if (!target_saddr)
1435 return -TARGET_EFAULT;
1436
1437 sa_family = tswap16(target_saddr->sa_family);
1438
1439 /* Oops. The caller might send a incomplete sun_path; sun_path
1440 * must be terminated by \0 (see the manual page), but
1441 * unfortunately it is quite common to specify sockaddr_un
1442 * length as "strlen(x->sun_path)" while it should be
1443 * "strlen(...) + 1". We'll fix that here if needed.
1444 * Linux kernel has a similar feature.
1445 */
1446
1447 if (sa_family == AF_UNIX) {
1448 if (len < unix_maxlen && len > 0) {
1449 char *cp = (char*)target_saddr;
1450
1451 if ( cp[len-1] && !cp[len] )
1452 len++;
1453 }
1454 if (len > unix_maxlen)
1455 len = unix_maxlen;
1456 }
1457
1458 memcpy(addr, target_saddr, len);
1459 addr->sa_family = sa_family;
1460 if (sa_family == AF_NETLINK) {
1461 struct sockaddr_nl *nladdr;
1462
1463 nladdr = (struct sockaddr_nl *)addr;
1464 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1465 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1466 } else if (sa_family == AF_PACKET) {
1467 struct target_sockaddr_ll *lladdr;
1468
1469 lladdr = (struct target_sockaddr_ll *)addr;
1470 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1471 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1472 }
1473 unlock_user(target_saddr, target_addr, 0);
1474
1475 return 0;
1476 }
1477
1478 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1479 struct sockaddr *addr,
1480 socklen_t len)
1481 {
1482 struct target_sockaddr *target_saddr;
1483
1484 if (len == 0) {
1485 return 0;
1486 }
1487 assert(addr);
1488
1489 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1490 if (!target_saddr)
1491 return -TARGET_EFAULT;
1492 memcpy(target_saddr, addr, len);
1493 if (len >= offsetof(struct target_sockaddr, sa_family) +
1494 sizeof(target_saddr->sa_family)) {
1495 target_saddr->sa_family = tswap16(addr->sa_family);
1496 }
1497 if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) {
1498 struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr;
1499 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1500 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1501 } else if (addr->sa_family == AF_PACKET) {
1502 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1503 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1504 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1505 } else if (addr->sa_family == AF_INET6 &&
1506 len >= sizeof(struct target_sockaddr_in6)) {
1507 struct target_sockaddr_in6 *target_in6 =
1508 (struct target_sockaddr_in6 *)target_saddr;
1509 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1510 }
1511 unlock_user(target_saddr, target_addr, len);
1512
1513 return 0;
1514 }
1515
1516 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1517 struct target_msghdr *target_msgh)
1518 {
1519 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1520 abi_long msg_controllen;
1521 abi_ulong target_cmsg_addr;
1522 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1523 socklen_t space = 0;
1524
1525 msg_controllen = tswapal(target_msgh->msg_controllen);
1526 if (msg_controllen < sizeof (struct target_cmsghdr))
1527 goto the_end;
1528 target_cmsg_addr = tswapal(target_msgh->msg_control);
1529 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1530 target_cmsg_start = target_cmsg;
1531 if (!target_cmsg)
1532 return -TARGET_EFAULT;
1533
1534 while (cmsg && target_cmsg) {
1535 void *data = CMSG_DATA(cmsg);
1536 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1537
1538 int len = tswapal(target_cmsg->cmsg_len)
1539 - sizeof(struct target_cmsghdr);
1540
1541 space += CMSG_SPACE(len);
1542 if (space > msgh->msg_controllen) {
1543 space -= CMSG_SPACE(len);
1544 /* This is a QEMU bug, since we allocated the payload
1545 * area ourselves (unlike overflow in host-to-target
1546 * conversion, which is just the guest giving us a buffer
1547 * that's too small). It can't happen for the payload types
1548 * we currently support; if it becomes an issue in future
1549 * we would need to improve our allocation strategy to
1550 * something more intelligent than "twice the size of the
1551 * target buffer we're reading from".
1552 */
1553 gemu_log("Host cmsg overflow\n");
1554 break;
1555 }
1556
1557 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1558 cmsg->cmsg_level = SOL_SOCKET;
1559 } else {
1560 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1561 }
1562 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1563 cmsg->cmsg_len = CMSG_LEN(len);
1564
1565 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1566 int *fd = (int *)data;
1567 int *target_fd = (int *)target_data;
1568 int i, numfds = len / sizeof(int);
1569
1570 for (i = 0; i < numfds; i++) {
1571 __get_user(fd[i], target_fd + i);
1572 }
1573 } else if (cmsg->cmsg_level == SOL_SOCKET
1574 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1575 struct ucred *cred = (struct ucred *)data;
1576 struct target_ucred *target_cred =
1577 (struct target_ucred *)target_data;
1578
1579 __get_user(cred->pid, &target_cred->pid);
1580 __get_user(cred->uid, &target_cred->uid);
1581 __get_user(cred->gid, &target_cred->gid);
1582 } else {
1583 gemu_log("Unsupported ancillary data: %d/%d\n",
1584 cmsg->cmsg_level, cmsg->cmsg_type);
1585 memcpy(data, target_data, len);
1586 }
1587
1588 cmsg = CMSG_NXTHDR(msgh, cmsg);
1589 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1590 target_cmsg_start);
1591 }
1592 unlock_user(target_cmsg, target_cmsg_addr, 0);
1593 the_end:
1594 msgh->msg_controllen = space;
1595 return 0;
1596 }
1597
1598 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1599 struct msghdr *msgh)
1600 {
1601 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1602 abi_long msg_controllen;
1603 abi_ulong target_cmsg_addr;
1604 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1605 socklen_t space = 0;
1606
1607 msg_controllen = tswapal(target_msgh->msg_controllen);
1608 if (msg_controllen < sizeof (struct target_cmsghdr))
1609 goto the_end;
1610 target_cmsg_addr = tswapal(target_msgh->msg_control);
1611 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1612 target_cmsg_start = target_cmsg;
1613 if (!target_cmsg)
1614 return -TARGET_EFAULT;
1615
1616 while (cmsg && target_cmsg) {
1617 void *data = CMSG_DATA(cmsg);
1618 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1619
1620 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1621 int tgt_len, tgt_space;
1622
1623 /* We never copy a half-header but may copy half-data;
1624 * this is Linux's behaviour in put_cmsg(). Note that
1625 * truncation here is a guest problem (which we report
1626 * to the guest via the CTRUNC bit), unlike truncation
1627 * in target_to_host_cmsg, which is a QEMU bug.
1628 */
1629 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1630 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1631 break;
1632 }
1633
1634 if (cmsg->cmsg_level == SOL_SOCKET) {
1635 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1636 } else {
1637 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1638 }
1639 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1640
1641 /* Payload types which need a different size of payload on
1642 * the target must adjust tgt_len here.
1643 */
1644 tgt_len = len;
1645 switch (cmsg->cmsg_level) {
1646 case SOL_SOCKET:
1647 switch (cmsg->cmsg_type) {
1648 case SO_TIMESTAMP:
1649 tgt_len = sizeof(struct target_timeval);
1650 break;
1651 default:
1652 break;
1653 }
1654 break;
1655 default:
1656 break;
1657 }
1658
1659 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1660 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1661 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1662 }
1663
1664 /* We must now copy-and-convert len bytes of payload
1665 * into tgt_len bytes of destination space. Bear in mind
1666 * that in both source and destination we may be dealing
1667 * with a truncated value!
1668 */
1669 switch (cmsg->cmsg_level) {
1670 case SOL_SOCKET:
1671 switch (cmsg->cmsg_type) {
1672 case SCM_RIGHTS:
1673 {
1674 int *fd = (int *)data;
1675 int *target_fd = (int *)target_data;
1676 int i, numfds = tgt_len / sizeof(int);
1677
1678 for (i = 0; i < numfds; i++) {
1679 __put_user(fd[i], target_fd + i);
1680 }
1681 break;
1682 }
1683 case SO_TIMESTAMP:
1684 {
1685 struct timeval *tv = (struct timeval *)data;
1686 struct target_timeval *target_tv =
1687 (struct target_timeval *)target_data;
1688
1689 if (len != sizeof(struct timeval) ||
1690 tgt_len != sizeof(struct target_timeval)) {
1691 goto unimplemented;
1692 }
1693
1694 /* copy struct timeval to target */
1695 __put_user(tv->tv_sec, &target_tv->tv_sec);
1696 __put_user(tv->tv_usec, &target_tv->tv_usec);
1697 break;
1698 }
1699 case SCM_CREDENTIALS:
1700 {
1701 struct ucred *cred = (struct ucred *)data;
1702 struct target_ucred *target_cred =
1703 (struct target_ucred *)target_data;
1704
1705 __put_user(cred->pid, &target_cred->pid);
1706 __put_user(cred->uid, &target_cred->uid);
1707 __put_user(cred->gid, &target_cred->gid);
1708 break;
1709 }
1710 default:
1711 goto unimplemented;
1712 }
1713 break;
1714
1715 case SOL_IP:
1716 switch (cmsg->cmsg_type) {
1717 case IP_TTL:
1718 {
1719 uint32_t *v = (uint32_t *)data;
1720 uint32_t *t_int = (uint32_t *)target_data;
1721
1722 if (len != sizeof(uint32_t) ||
1723 tgt_len != sizeof(uint32_t)) {
1724 goto unimplemented;
1725 }
1726 __put_user(*v, t_int);
1727 break;
1728 }
1729 case IP_RECVERR:
1730 {
1731 struct errhdr_t {
1732 struct sock_extended_err ee;
1733 struct sockaddr_in offender;
1734 };
1735 struct errhdr_t *errh = (struct errhdr_t *)data;
1736 struct errhdr_t *target_errh =
1737 (struct errhdr_t *)target_data;
1738
1739 if (len != sizeof(struct errhdr_t) ||
1740 tgt_len != sizeof(struct errhdr_t)) {
1741 goto unimplemented;
1742 }
1743 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1744 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1745 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1746 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1747 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1748 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1749 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1750 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1751 (void *) &errh->offender, sizeof(errh->offender));
1752 break;
1753 }
1754 default:
1755 goto unimplemented;
1756 }
1757 break;
1758
1759 case SOL_IPV6:
1760 switch (cmsg->cmsg_type) {
1761 case IPV6_HOPLIMIT:
1762 {
1763 uint32_t *v = (uint32_t *)data;
1764 uint32_t *t_int = (uint32_t *)target_data;
1765
1766 if (len != sizeof(uint32_t) ||
1767 tgt_len != sizeof(uint32_t)) {
1768 goto unimplemented;
1769 }
1770 __put_user(*v, t_int);
1771 break;
1772 }
1773 case IPV6_RECVERR:
1774 {
1775 struct errhdr6_t {
1776 struct sock_extended_err ee;
1777 struct sockaddr_in6 offender;
1778 };
1779 struct errhdr6_t *errh = (struct errhdr6_t *)data;
1780 struct errhdr6_t *target_errh =
1781 (struct errhdr6_t *)target_data;
1782
1783 if (len != sizeof(struct errhdr6_t) ||
1784 tgt_len != sizeof(struct errhdr6_t)) {
1785 goto unimplemented;
1786 }
1787 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1788 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1789 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1790 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1791 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1792 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1793 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1794 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1795 (void *) &errh->offender, sizeof(errh->offender));
1796 break;
1797 }
1798 default:
1799 goto unimplemented;
1800 }
1801 break;
1802
1803 default:
1804 unimplemented:
1805 gemu_log("Unsupported ancillary data: %d/%d\n",
1806 cmsg->cmsg_level, cmsg->cmsg_type);
1807 memcpy(target_data, data, MIN(len, tgt_len));
1808 if (tgt_len > len) {
1809 memset(target_data + len, 0, tgt_len - len);
1810 }
1811 }
1812
1813 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
1814 tgt_space = TARGET_CMSG_SPACE(tgt_len);
1815 if (msg_controllen < tgt_space) {
1816 tgt_space = msg_controllen;
1817 }
1818 msg_controllen -= tgt_space;
1819 space += tgt_space;
1820 cmsg = CMSG_NXTHDR(msgh, cmsg);
1821 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1822 target_cmsg_start);
1823 }
1824 unlock_user(target_cmsg, target_cmsg_addr, space);
1825 the_end:
1826 target_msgh->msg_controllen = tswapal(space);
1827 return 0;
1828 }
1829
1830 /* do_setsockopt() Must return target values and target errnos. */
1831 static abi_long do_setsockopt(int sockfd, int level, int optname,
1832 abi_ulong optval_addr, socklen_t optlen)
1833 {
1834 abi_long ret;
1835 int val;
1836 struct ip_mreqn *ip_mreq;
1837 struct ip_mreq_source *ip_mreq_source;
1838
1839 switch(level) {
1840 case SOL_TCP:
1841 /* TCP options all take an 'int' value. */
1842 if (optlen < sizeof(uint32_t))
1843 return -TARGET_EINVAL;
1844
1845 if (get_user_u32(val, optval_addr))
1846 return -TARGET_EFAULT;
1847 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1848 break;
1849 case SOL_IP:
1850 switch(optname) {
1851 case IP_TOS:
1852 case IP_TTL:
1853 case IP_HDRINCL:
1854 case IP_ROUTER_ALERT:
1855 case IP_RECVOPTS:
1856 case IP_RETOPTS:
1857 case IP_PKTINFO:
1858 case IP_MTU_DISCOVER:
1859 case IP_RECVERR:
1860 case IP_RECVTTL:
1861 case IP_RECVTOS:
1862 #ifdef IP_FREEBIND
1863 case IP_FREEBIND:
1864 #endif
1865 case IP_MULTICAST_TTL:
1866 case IP_MULTICAST_LOOP:
1867 val = 0;
1868 if (optlen >= sizeof(uint32_t)) {
1869 if (get_user_u32(val, optval_addr))
1870 return -TARGET_EFAULT;
1871 } else if (optlen >= 1) {
1872 if (get_user_u8(val, optval_addr))
1873 return -TARGET_EFAULT;
1874 }
1875 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1876 break;
1877 case IP_ADD_MEMBERSHIP:
1878 case IP_DROP_MEMBERSHIP:
1879 if (optlen < sizeof (struct target_ip_mreq) ||
1880 optlen > sizeof (struct target_ip_mreqn))
1881 return -TARGET_EINVAL;
1882
1883 ip_mreq = (struct ip_mreqn *) alloca(optlen);
1884 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
1885 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
1886 break;
1887
1888 case IP_BLOCK_SOURCE:
1889 case IP_UNBLOCK_SOURCE:
1890 case IP_ADD_SOURCE_MEMBERSHIP:
1891 case IP_DROP_SOURCE_MEMBERSHIP:
1892 if (optlen != sizeof (struct target_ip_mreq_source))
1893 return -TARGET_EINVAL;
1894
1895 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
1896 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
1897 unlock_user (ip_mreq_source, optval_addr, 0);
1898 break;
1899
1900 default:
1901 goto unimplemented;
1902 }
1903 break;
1904 case SOL_IPV6:
1905 switch (optname) {
1906 case IPV6_MTU_DISCOVER:
1907 case IPV6_MTU:
1908 case IPV6_V6ONLY:
1909 case IPV6_RECVPKTINFO:
1910 case IPV6_UNICAST_HOPS:
1911 case IPV6_MULTICAST_HOPS:
1912 case IPV6_MULTICAST_LOOP:
1913 case IPV6_RECVERR:
1914 case IPV6_RECVHOPLIMIT:
1915 case IPV6_2292HOPLIMIT:
1916 case IPV6_CHECKSUM:
1917 case IPV6_ADDRFORM:
1918 case IPV6_2292PKTINFO:
1919 case IPV6_RECVTCLASS:
1920 case IPV6_RECVRTHDR:
1921 case IPV6_2292RTHDR:
1922 case IPV6_RECVHOPOPTS:
1923 case IPV6_2292HOPOPTS:
1924 case IPV6_RECVDSTOPTS:
1925 case IPV6_2292DSTOPTS:
1926 case IPV6_TCLASS:
1927 #ifdef IPV6_RECVPATHMTU
1928 case IPV6_RECVPATHMTU:
1929 #endif
1930 #ifdef IPV6_TRANSPARENT
1931 case IPV6_TRANSPARENT:
1932 #endif
1933 #ifdef IPV6_FREEBIND
1934 case IPV6_FREEBIND:
1935 #endif
1936 #ifdef IPV6_RECVORIGDSTADDR
1937 case IPV6_RECVORIGDSTADDR:
1938 #endif
1939 val = 0;
1940 if (optlen < sizeof(uint32_t)) {
1941 return -TARGET_EINVAL;
1942 }
1943 if (get_user_u32(val, optval_addr)) {
1944 return -TARGET_EFAULT;
1945 }
1946 ret = get_errno(setsockopt(sockfd, level, optname,
1947 &val, sizeof(val)));
1948 break;
1949 case IPV6_PKTINFO:
1950 {
1951 struct in6_pktinfo pki;
1952
1953 if (optlen < sizeof(pki)) {
1954 return -TARGET_EINVAL;
1955 }
1956
1957 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
1958 return -TARGET_EFAULT;
1959 }
1960
1961 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
1962
1963 ret = get_errno(setsockopt(sockfd, level, optname,
1964 &pki, sizeof(pki)));
1965 break;
1966 }
1967 case IPV6_ADD_MEMBERSHIP:
1968 case IPV6_DROP_MEMBERSHIP:
1969 {
1970 struct ipv6_mreq ipv6mreq;
1971
1972 if (optlen < sizeof(ipv6mreq)) {
1973 return -TARGET_EINVAL;
1974 }
1975
1976 if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
1977 return -TARGET_EFAULT;
1978 }
1979
1980 ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
1981
1982 ret = get_errno(setsockopt(sockfd, level, optname,
1983 &ipv6mreq, sizeof(ipv6mreq)));
1984 break;
1985 }
1986 default:
1987 goto unimplemented;
1988 }
1989 break;
1990 case SOL_ICMPV6:
1991 switch (optname) {
1992 case ICMPV6_FILTER:
1993 {
1994 struct icmp6_filter icmp6f;
1995
1996 if (optlen > sizeof(icmp6f)) {
1997 optlen = sizeof(icmp6f);
1998 }
1999
2000 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
2001 return -TARGET_EFAULT;
2002 }
2003
2004 for (val = 0; val < 8; val++) {
2005 icmp6f.data[val] = tswap32(icmp6f.data[val]);
2006 }
2007
2008 ret = get_errno(setsockopt(sockfd, level, optname,
2009 &icmp6f, optlen));
2010 break;
2011 }
2012 default:
2013 goto unimplemented;
2014 }
2015 break;
2016 case SOL_RAW:
2017 switch (optname) {
2018 case ICMP_FILTER:
2019 case IPV6_CHECKSUM:
2020 /* those take an u32 value */
2021 if (optlen < sizeof(uint32_t)) {
2022 return -TARGET_EINVAL;
2023 }
2024
2025 if (get_user_u32(val, optval_addr)) {
2026 return -TARGET_EFAULT;
2027 }
2028 ret = get_errno(setsockopt(sockfd, level, optname,
2029 &val, sizeof(val)));
2030 break;
2031
2032 default:
2033 goto unimplemented;
2034 }
2035 break;
2036 #if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
2037 case SOL_ALG:
2038 switch (optname) {
2039 case ALG_SET_KEY:
2040 {
2041 char *alg_key = g_malloc(optlen);
2042
2043 if (!alg_key) {
2044 return -TARGET_ENOMEM;
2045 }
2046 if (copy_from_user(alg_key, optval_addr, optlen)) {
2047 g_free(alg_key);
2048 return -TARGET_EFAULT;
2049 }
2050 ret = get_errno(setsockopt(sockfd, level, optname,
2051 alg_key, optlen));
2052 g_free(alg_key);
2053 break;
2054 }
2055 case ALG_SET_AEAD_AUTHSIZE:
2056 {
2057 ret = get_errno(setsockopt(sockfd, level, optname,
2058 NULL, optlen));
2059 break;
2060 }
2061 default:
2062 goto unimplemented;
2063 }
2064 break;
2065 #endif
2066 case TARGET_SOL_SOCKET:
2067 switch (optname) {
2068 case TARGET_SO_RCVTIMEO:
2069 {
2070 struct timeval tv;
2071
2072 optname = SO_RCVTIMEO;
2073
2074 set_timeout:
2075 if (optlen != sizeof(struct target_timeval)) {
2076 return -TARGET_EINVAL;
2077 }
2078
2079 if (copy_from_user_timeval(&tv, optval_addr)) {
2080 return -TARGET_EFAULT;
2081 }
2082
2083 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2084 &tv, sizeof(tv)));
2085 return ret;
2086 }
2087 case TARGET_SO_SNDTIMEO:
2088 optname = SO_SNDTIMEO;
2089 goto set_timeout;
2090 case TARGET_SO_ATTACH_FILTER:
2091 {
2092 struct target_sock_fprog *tfprog;
2093 struct target_sock_filter *tfilter;
2094 struct sock_fprog fprog;
2095 struct sock_filter *filter;
2096 int i;
2097
2098 if (optlen != sizeof(*tfprog)) {
2099 return -TARGET_EINVAL;
2100 }
2101 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2102 return -TARGET_EFAULT;
2103 }
2104 if (!lock_user_struct(VERIFY_READ, tfilter,
2105 tswapal(tfprog->filter), 0)) {
2106 unlock_user_struct(tfprog, optval_addr, 1);
2107 return -TARGET_EFAULT;
2108 }
2109
2110 fprog.len = tswap16(tfprog->len);
2111 filter = g_try_new(struct sock_filter, fprog.len);
2112 if (filter == NULL) {
2113 unlock_user_struct(tfilter, tfprog->filter, 1);
2114 unlock_user_struct(tfprog, optval_addr, 1);
2115 return -TARGET_ENOMEM;
2116 }
2117 for (i = 0; i < fprog.len; i++) {
2118 filter[i].code = tswap16(tfilter[i].code);
2119 filter[i].jt = tfilter[i].jt;
2120 filter[i].jf = tfilter[i].jf;
2121 filter[i].k = tswap32(tfilter[i].k);
2122 }
2123 fprog.filter = filter;
2124
2125 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2126 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2127 g_free(filter);
2128
2129 unlock_user_struct(tfilter, tfprog->filter, 1);
2130 unlock_user_struct(tfprog, optval_addr, 1);
2131 return ret;
2132 }
2133 case TARGET_SO_BINDTODEVICE:
2134 {
2135 char *dev_ifname, *addr_ifname;
2136
2137 if (optlen > IFNAMSIZ - 1) {
2138 optlen = IFNAMSIZ - 1;
2139 }
2140 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2141 if (!dev_ifname) {
2142 return -TARGET_EFAULT;
2143 }
2144 optname = SO_BINDTODEVICE;
2145 addr_ifname = alloca(IFNAMSIZ);
2146 memcpy(addr_ifname, dev_ifname, optlen);
2147 addr_ifname[optlen] = 0;
2148 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2149 addr_ifname, optlen));
2150 unlock_user (dev_ifname, optval_addr, 0);
2151 return ret;
2152 }
2153 case TARGET_SO_LINGER:
2154 {
2155 struct linger lg;
2156 struct target_linger *tlg;
2157
2158 if (optlen != sizeof(struct target_linger)) {
2159 return -TARGET_EINVAL;
2160 }
2161 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2162 return -TARGET_EFAULT;
2163 }
2164 __get_user(lg.l_onoff, &tlg->l_onoff);
2165 __get_user(lg.l_linger, &tlg->l_linger);
2166 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2167 &lg, sizeof(lg)));
2168 unlock_user_struct(tlg, optval_addr, 0);
2169 return ret;
2170 }
2171 /* Options with 'int' argument. */
2172 case TARGET_SO_DEBUG:
2173 optname = SO_DEBUG;
2174 break;
2175 case TARGET_SO_REUSEADDR:
2176 optname = SO_REUSEADDR;
2177 break;
2178 #ifdef SO_REUSEPORT
2179 case TARGET_SO_REUSEPORT:
2180 optname = SO_REUSEPORT;
2181 break;
2182 #endif
2183 case TARGET_SO_TYPE:
2184 optname = SO_TYPE;
2185 break;
2186 case TARGET_SO_ERROR:
2187 optname = SO_ERROR;
2188 break;
2189 case TARGET_SO_DONTROUTE:
2190 optname = SO_DONTROUTE;
2191 break;
2192 case TARGET_SO_BROADCAST:
2193 optname = SO_BROADCAST;
2194 break;
2195 case TARGET_SO_SNDBUF:
2196 optname = SO_SNDBUF;
2197 break;
2198 case TARGET_SO_SNDBUFFORCE:
2199 optname = SO_SNDBUFFORCE;
2200 break;
2201 case TARGET_SO_RCVBUF:
2202 optname = SO_RCVBUF;
2203 break;
2204 case TARGET_SO_RCVBUFFORCE:
2205 optname = SO_RCVBUFFORCE;
2206 break;
2207 case TARGET_SO_KEEPALIVE:
2208 optname = SO_KEEPALIVE;
2209 break;
2210 case TARGET_SO_OOBINLINE:
2211 optname = SO_OOBINLINE;
2212 break;
2213 case TARGET_SO_NO_CHECK:
2214 optname = SO_NO_CHECK;
2215 break;
2216 case TARGET_SO_PRIORITY:
2217 optname = SO_PRIORITY;
2218 break;
2219 #ifdef SO_BSDCOMPAT
2220 case TARGET_SO_BSDCOMPAT:
2221 optname = SO_BSDCOMPAT;
2222 break;
2223 #endif
2224 case TARGET_SO_PASSCRED:
2225 optname = SO_PASSCRED;
2226 break;
2227 case TARGET_SO_PASSSEC:
2228 optname = SO_PASSSEC;
2229 break;
2230 case TARGET_SO_TIMESTAMP:
2231 optname = SO_TIMESTAMP;
2232 break;
2233 case TARGET_SO_RCVLOWAT:
2234 optname = SO_RCVLOWAT;
2235 break;
2236 default:
2237 goto unimplemented;
2238 }
2239 if (optlen < sizeof(uint32_t))
2240 return -TARGET_EINVAL;
2241
2242 if (get_user_u32(val, optval_addr))
2243 return -TARGET_EFAULT;
2244 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2245 break;
2246 default:
2247 unimplemented:
2248 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname);
2249 ret = -TARGET_ENOPROTOOPT;
2250 }
2251 return ret;
2252 }
2253
2254 /* do_getsockopt() Must return target values and target errnos. */
2255 static abi_long do_getsockopt(int sockfd, int level, int optname,
2256 abi_ulong optval_addr, abi_ulong optlen)
2257 {
2258 abi_long ret;
2259 int len, val;
2260 socklen_t lv;
2261
2262 switch(level) {
2263 case TARGET_SOL_SOCKET:
2264 level = SOL_SOCKET;
2265 switch (optname) {
2266 /* These don't just return a single integer */
2267 case TARGET_SO_RCVTIMEO:
2268 case TARGET_SO_SNDTIMEO:
2269 case TARGET_SO_PEERNAME:
2270 goto unimplemented;
2271 case TARGET_SO_PEERCRED: {
2272 struct ucred cr;
2273 socklen_t crlen;
2274 struct target_ucred *tcr;
2275
2276 if (get_user_u32(len, optlen)) {
2277 return -TARGET_EFAULT;
2278 }
2279 if (len < 0) {
2280 return -TARGET_EINVAL;
2281 }
2282
2283 crlen = sizeof(cr);
2284 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2285 &cr, &crlen));
2286 if (ret < 0) {
2287 return ret;
2288 }
2289 if (len > crlen) {
2290 len = crlen;
2291 }
2292 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2293 return -TARGET_EFAULT;
2294 }
2295 __put_user(cr.pid, &tcr->pid);
2296 __put_user(cr.uid, &tcr->uid);
2297 __put_user(cr.gid, &tcr->gid);
2298 unlock_user_struct(tcr, optval_addr, 1);
2299 if (put_user_u32(len, optlen)) {
2300 return -TARGET_EFAULT;
2301 }
2302 break;
2303 }
2304 case TARGET_SO_LINGER:
2305 {
2306 struct linger lg;
2307 socklen_t lglen;
2308 struct target_linger *tlg;
2309
2310 if (get_user_u32(len, optlen)) {
2311 return -TARGET_EFAULT;
2312 }
2313 if (len < 0) {
2314 return -TARGET_EINVAL;
2315 }
2316
2317 lglen = sizeof(lg);
2318 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2319 &lg, &lglen));
2320 if (ret < 0) {
2321 return ret;
2322 }
2323 if (len > lglen) {
2324 len = lglen;
2325 }
2326 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2327 return -TARGET_EFAULT;
2328 }
2329 __put_user(lg.l_onoff, &tlg->l_onoff);
2330 __put_user(lg.l_linger, &tlg->l_linger);
2331 unlock_user_struct(tlg, optval_addr, 1);
2332 if (put_user_u32(len, optlen)) {
2333 return -TARGET_EFAULT;
2334 }
2335 break;
2336 }
2337 /* Options with 'int' argument. */
2338 case TARGET_SO_DEBUG:
2339 optname = SO_DEBUG;
2340 goto int_case;
2341 case TARGET_SO_REUSEADDR:
2342 optname = SO_REUSEADDR;
2343 goto int_case;
2344 #ifdef SO_REUSEPORT
2345 case TARGET_SO_REUSEPORT:
2346 optname = SO_REUSEPORT;
2347 goto int_case;
2348 #endif
2349 case TARGET_SO_TYPE:
2350 optname = SO_TYPE;
2351 goto int_case;
2352 case TARGET_SO_ERROR:
2353 optname = SO_ERROR;
2354 goto int_case;
2355 case TARGET_SO_DONTROUTE:
2356 optname = SO_DONTROUTE;
2357 goto int_case;
2358 case TARGET_SO_BROADCAST:
2359 optname = SO_BROADCAST;
2360 goto int_case;
2361 case TARGET_SO_SNDBUF:
2362 optname = SO_SNDBUF;
2363 goto int_case;
2364 case TARGET_SO_RCVBUF:
2365 optname = SO_RCVBUF;
2366 goto int_case;
2367 case TARGET_SO_KEEPALIVE:
2368 optname = SO_KEEPALIVE;
2369 goto int_case;
2370 case TARGET_SO_OOBINLINE:
2371 optname = SO_OOBINLINE;
2372 goto int_case;
2373 case TARGET_SO_NO_CHECK:
2374 optname = SO_NO_CHECK;
2375 goto int_case;
2376 case TARGET_SO_PRIORITY:
2377 optname = SO_PRIORITY;
2378 goto int_case;
2379 #ifdef SO_BSDCOMPAT
2380 case TARGET_SO_BSDCOMPAT:
2381 optname = SO_BSDCOMPAT;
2382 goto int_case;
2383 #endif
2384 case TARGET_SO_PASSCRED:
2385 optname = SO_PASSCRED;
2386 goto int_case;
2387 case TARGET_SO_TIMESTAMP:
2388 optname = SO_TIMESTAMP;
2389 goto int_case;
2390 case TARGET_SO_RCVLOWAT:
2391 optname = SO_RCVLOWAT;
2392 goto int_case;
2393 case TARGET_SO_ACCEPTCONN:
2394 optname = SO_ACCEPTCONN;
2395 goto int_case;
2396 default:
2397 goto int_case;
2398 }
2399 break;
2400 case SOL_TCP:
2401 /* TCP options all take an 'int' value. */
2402 int_case:
2403 if (get_user_u32(len, optlen))
2404 return -TARGET_EFAULT;
2405 if (len < 0)
2406 return -TARGET_EINVAL;
2407 lv = sizeof(lv);
2408 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2409 if (ret < 0)
2410 return ret;
2411 if (optname == SO_TYPE) {
2412 val = host_to_target_sock_type(val);
2413 }
2414 if (len > lv)
2415 len = lv;
2416 if (len == 4) {
2417 if (put_user_u32(val, optval_addr))
2418 return -TARGET_EFAULT;
2419 } else {
2420 if (put_user_u8(val, optval_addr))
2421 return -TARGET_EFAULT;
2422 }
2423 if (put_user_u32(len, optlen))
2424 return -TARGET_EFAULT;
2425 break;
2426 case SOL_IP:
2427 switch(optname) {
2428 case IP_TOS:
2429 case IP_TTL:
2430 case IP_HDRINCL:
2431 case IP_ROUTER_ALERT:
2432 case IP_RECVOPTS:
2433 case IP_RETOPTS:
2434 case IP_PKTINFO:
2435 case IP_MTU_DISCOVER:
2436 case IP_RECVERR:
2437 case IP_RECVTOS:
2438 #ifdef IP_FREEBIND
2439 case IP_FREEBIND:
2440 #endif
2441 case IP_MULTICAST_TTL:
2442 case IP_MULTICAST_LOOP:
2443 if (get_user_u32(len, optlen))
2444 return -TARGET_EFAULT;
2445 if (len < 0)
2446 return -TARGET_EINVAL;
2447 lv = sizeof(lv);
2448 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2449 if (ret < 0)
2450 return ret;
2451 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2452 len = 1;
2453 if (put_user_u32(len, optlen)
2454 || put_user_u8(val, optval_addr))
2455 return -TARGET_EFAULT;
2456 } else {
2457 if (len > sizeof(int))
2458 len = sizeof(int);
2459 if (put_user_u32(len, optlen)
2460 || put_user_u32(val, optval_addr))
2461 return -TARGET_EFAULT;
2462 }
2463 break;
2464 default:
2465 ret = -TARGET_ENOPROTOOPT;
2466 break;
2467 }
2468 break;
2469 case SOL_IPV6:
2470 switch (optname) {
2471 case IPV6_MTU_DISCOVER:
2472 case IPV6_MTU:
2473 case IPV6_V6ONLY:
2474 case IPV6_RECVPKTINFO:
2475 case IPV6_UNICAST_HOPS:
2476 case IPV6_MULTICAST_HOPS:
2477 case IPV6_MULTICAST_LOOP:
2478 case IPV6_RECVERR:
2479 case IPV6_RECVHOPLIMIT:
2480 case IPV6_2292HOPLIMIT:
2481 case IPV6_CHECKSUM:
2482 case IPV6_ADDRFORM:
2483 case IPV6_2292PKTINFO:
2484 case IPV6_RECVTCLASS:
2485 case IPV6_RECVRTHDR:
2486 case IPV6_2292RTHDR:
2487 case IPV6_RECVHOPOPTS:
2488 case IPV6_2292HOPOPTS:
2489 case IPV6_RECVDSTOPTS:
2490 case IPV6_2292DSTOPTS:
2491 case IPV6_TCLASS:
2492 #ifdef IPV6_RECVPATHMTU
2493 case IPV6_RECVPATHMTU:
2494 #endif
2495 #ifdef IPV6_TRANSPARENT
2496 case IPV6_TRANSPARENT:
2497 #endif
2498 #ifdef IPV6_FREEBIND
2499 case IPV6_FREEBIND:
2500 #endif
2501 #ifdef IPV6_RECVORIGDSTADDR
2502 case IPV6_RECVORIGDSTADDR:
2503 #endif
2504 if (get_user_u32(len, optlen))
2505 return -TARGET_EFAULT;
2506 if (len < 0)
2507 return -TARGET_EINVAL;
2508 lv = sizeof(lv);
2509 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2510 if (ret < 0)
2511 return ret;
2512 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2513 len = 1;
2514 if (put_user_u32(len, optlen)
2515 || put_user_u8(val, optval_addr))
2516 return -TARGET_EFAULT;
2517 } else {
2518 if (len > sizeof(int))
2519 len = sizeof(int);
2520 if (put_user_u32(len, optlen)
2521 || put_user_u32(val, optval_addr))
2522 return -TARGET_EFAULT;
2523 }
2524 break;
2525 default:
2526 ret = -TARGET_ENOPROTOOPT;
2527 break;
2528 }
2529 break;
2530 default:
2531 unimplemented:
2532 gemu_log("getsockopt level=%d optname=%d not yet supported\n",
2533 level, optname);
2534 ret = -TARGET_EOPNOTSUPP;
2535 break;
2536 }
2537 return ret;
2538 }
2539
2540 /* Convert target low/high pair representing file offset into the host
2541 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2542 * as the kernel doesn't handle them either.
2543 */
2544 static void target_to_host_low_high(abi_ulong tlow,
2545 abi_ulong thigh,
2546 unsigned long *hlow,
2547 unsigned long *hhigh)
2548 {
2549 uint64_t off = tlow |
2550 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2551 TARGET_LONG_BITS / 2;
2552
2553 *hlow = off;
2554 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
2555 }
2556
2557 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
2558 abi_ulong count, int copy)
2559 {
2560 struct target_iovec *target_vec;
2561 struct iovec *vec;
2562 abi_ulong total_len, max_len;
2563 int i;
2564 int err = 0;
2565 bool bad_address = false;
2566
2567 if (count == 0) {
2568 errno = 0;
2569 return NULL;
2570 }
2571 if (count > IOV_MAX) {
2572 errno = EINVAL;
2573 return NULL;
2574 }
2575
2576 vec = g_try_new0(struct iovec, count);
2577 if (vec == NULL) {
2578 errno = ENOMEM;
2579 return NULL;
2580 }
2581
2582 target_vec = lock_user(VERIFY_READ, target_addr,
2583 count * sizeof(struct target_iovec), 1);
2584 if (target_vec == NULL) {
2585 err = EFAULT;
2586 goto fail2;
2587 }
2588
2589 /* ??? If host page size > target page size, this will result in a
2590 value larger than what we can actually support. */
2591 max_len = 0x7fffffff & TARGET_PAGE_MASK;
2592 total_len = 0;
2593
2594 for (i = 0; i < count; i++) {
2595 abi_ulong base = tswapal(target_vec[i].iov_base);
2596 abi_long len = tswapal(target_vec[i].iov_len);
2597
2598 if (len < 0) {
2599 err = EINVAL;
2600 goto fail;
2601 } else if (len == 0) {
2602 /* Zero length pointer is ignored. */
2603 vec[i].iov_base = 0;
2604 } else {
2605 vec[i].iov_base = lock_user(type, base, len, copy);
2606 /* If the first buffer pointer is bad, this is a fault. But
2607 * subsequent bad buffers will result in a partial write; this
2608 * is realized by filling the vector with null pointers and
2609 * zero lengths. */
2610 if (!vec[i].iov_base) {
2611 if (i == 0) {
2612 err = EFAULT;
2613 goto fail;
2614 } else {
2615 bad_address = true;
2616 }
2617 }
2618 if (bad_address) {
2619 len = 0;
2620 }
2621 if (len > max_len - total_len) {
2622 len = max_len - total_len;
2623 }
2624 }
2625 vec[i].iov_len = len;
2626 total_len += len;
2627 }
2628
2629 unlock_user(target_vec, target_addr, 0);
2630 return vec;
2631
2632 fail:
2633 while (--i >= 0) {
2634 if (tswapal(target_vec[i].iov_len) > 0) {
2635 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
2636 }
2637 }
2638 unlock_user(target_vec, target_addr, 0);
2639 fail2:
2640 g_free(vec);
2641 errno = err;
2642 return NULL;
2643 }
2644
2645 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
2646 abi_ulong count, int copy)
2647 {
2648 struct target_iovec *target_vec;
2649 int i;
2650
2651 target_vec = lock_user(VERIFY_READ, target_addr,
2652 count * sizeof(struct target_iovec), 1);
2653 if (target_vec) {
2654 for (i = 0; i < count; i++) {
2655 abi_ulong base = tswapal(target_vec[i].iov_base);
2656 abi_long len = tswapal(target_vec[i].iov_len);
2657 if (len < 0) {
2658 break;
2659 }
2660 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
2661 }
2662 unlock_user(target_vec, target_addr, 0);
2663 }
2664
2665 g_free(vec);
2666 }
2667
2668 static inline int target_to_host_sock_type(int *type)
2669 {
2670 int host_type = 0;
2671 int target_type = *type;
2672
2673 switch (target_type & TARGET_SOCK_TYPE_MASK) {
2674 case TARGET_SOCK_DGRAM:
2675 host_type = SOCK_DGRAM;
2676 break;
2677 case TARGET_SOCK_STREAM:
2678 host_type = SOCK_STREAM;
2679 break;
2680 default:
2681 host_type = target_type & TARGET_SOCK_TYPE_MASK;
2682 break;
2683 }
2684 if (target_type & TARGET_SOCK_CLOEXEC) {
2685 #if defined(SOCK_CLOEXEC)
2686 host_type |= SOCK_CLOEXEC;
2687 #else
2688 return -TARGET_EINVAL;
2689 #endif
2690 }
2691 if (target_type & TARGET_SOCK_NONBLOCK) {
2692 #if defined(SOCK_NONBLOCK)
2693 host_type |= SOCK_NONBLOCK;
2694 #elif !defined(O_NONBLOCK)
2695 return -TARGET_EINVAL;
2696 #endif
2697 }
2698 *type = host_type;
2699 return 0;
2700 }
2701
2702 /* Try to emulate socket type flags after socket creation. */
2703 static int sock_flags_fixup(int fd, int target_type)
2704 {
2705 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
2706 if (target_type & TARGET_SOCK_NONBLOCK) {
2707 int flags = fcntl(fd, F_GETFL);
2708 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
2709 close(fd);
2710 return -TARGET_EINVAL;
2711 }
2712 }
2713 #endif
2714 return fd;
2715 }
2716
2717 /* do_socket() Must return target values and target errnos. */
2718 static abi_long do_socket(int domain, int type, int protocol)
2719 {
2720 int target_type = type;
2721 int ret;
2722
2723 ret = target_to_host_sock_type(&type);
2724 if (ret) {
2725 return ret;
2726 }
2727
2728 if (domain == PF_NETLINK && !(
2729 #ifdef CONFIG_RTNETLINK
2730 protocol == NETLINK_ROUTE ||
2731 #endif
2732 protocol == NETLINK_KOBJECT_UEVENT ||
2733 protocol == NETLINK_AUDIT)) {
2734 return -EPFNOSUPPORT;
2735 }
2736
2737 if (domain == AF_PACKET ||
2738 (domain == AF_INET && type == SOCK_PACKET)) {
2739 protocol = tswap16(protocol);
2740 }
2741
2742 ret = get_errno(socket(domain, type, protocol));
2743 if (ret >= 0) {
2744 ret = sock_flags_fixup(ret, target_type);
2745 if (type == SOCK_PACKET) {
2746 /* Manage an obsolete case :
2747 * if socket type is SOCK_PACKET, bind by name
2748 */
2749 fd_trans_register(ret, &target_packet_trans);
2750 } else if (domain == PF_NETLINK) {
2751 switch (protocol) {
2752 #ifdef CONFIG_RTNETLINK
2753 case NETLINK_ROUTE:
2754 fd_trans_register(ret, &target_netlink_route_trans);
2755 break;
2756 #endif
2757 case NETLINK_KOBJECT_UEVENT:
2758 /* nothing to do: messages are strings */
2759 break;
2760 case NETLINK_AUDIT:
2761 fd_trans_register(ret, &target_netlink_audit_trans);
2762 break;
2763 default:
2764 g_assert_not_reached();
2765 }
2766 }
2767 }
2768 return ret;
2769 }
2770
2771 /* do_bind() Must return target values and target errnos. */
2772 static abi_long do_bind(int sockfd, abi_ulong target_addr,
2773 socklen_t addrlen)
2774 {
2775 void *addr;
2776 abi_long ret;
2777
2778 if ((int)addrlen < 0) {
2779 return -TARGET_EINVAL;
2780 }
2781
2782 addr = alloca(addrlen+1);
2783
2784 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
2785 if (ret)
2786 return ret;
2787
2788 return get_errno(bind(sockfd, addr, addrlen));
2789 }
2790
2791 /* do_connect() Must return target values and target errnos. */
2792 static abi_long do_connect(int sockfd, abi_ulong target_addr,
2793 socklen_t addrlen)
2794 {
2795 void *addr;
2796 abi_long ret;
2797
2798 if ((int)addrlen < 0) {
2799 return -TARGET_EINVAL;
2800 }
2801
2802 addr = alloca(addrlen+1);
2803
2804 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
2805 if (ret)
2806 return ret;
2807
2808 return get_errno(safe_connect(sockfd, addr, addrlen));
2809 }
2810
2811 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
2812 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
2813 int flags, int send)
2814 {
2815 abi_long ret, len;
2816 struct msghdr msg;
2817 abi_ulong count;
2818 struct iovec *vec;
2819 abi_ulong target_vec;
2820
2821 if (msgp->msg_name) {
2822 msg.msg_namelen = tswap32(msgp->msg_namelen);
2823 msg.msg_name = alloca(msg.msg_namelen+1);
2824 ret = target_to_host_sockaddr(fd, msg.msg_name,
2825 tswapal(msgp->msg_name),
2826 msg.msg_namelen);
2827 if (ret == -TARGET_EFAULT) {
2828 /* For connected sockets msg_name and msg_namelen must
2829 * be ignored, so returning EFAULT immediately is wrong.
2830 * Instead, pass a bad msg_name to the host kernel, and
2831 * let it decide whether to return EFAULT or not.
2832 */
2833 msg.msg_name = (void *)-1;
2834 } else if (ret) {
2835 goto out2;
2836 }
2837 } else {
2838 msg.msg_name = NULL;
2839 msg.msg_namelen = 0;
2840 }
2841 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
2842 msg.msg_control = alloca(msg.msg_controllen);
2843 memset(msg.msg_control, 0, msg.msg_controllen);
2844
2845 msg.msg_flags = tswap32(msgp->msg_flags);
2846
2847 count = tswapal(msgp->msg_iovlen);
2848 target_vec = tswapal(msgp->msg_iov);
2849
2850 if (count > IOV_MAX) {
2851 /* sendrcvmsg returns a different errno for this condition than
2852 * readv/writev, so we must catch it here before lock_iovec() does.
2853 */
2854 ret = -TARGET_EMSGSIZE;
2855 goto out2;
2856 }
2857
2858 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
2859 target_vec, count, send);
2860 if (vec == NULL) {
2861 ret = -host_to_target_errno(errno);
2862 goto out2;
2863 }
2864 msg.msg_iovlen = count;
2865 msg.msg_iov = vec;
2866
2867 if (send) {
2868 if (fd_trans_target_to_host_data(fd)) {
2869 void *host_msg;
2870
2871 host_msg = g_malloc(msg.msg_iov->iov_len);
2872 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
2873 ret = fd_trans_target_to_host_data(fd)(host_msg,
2874 msg.msg_iov->iov_len);
2875 if (ret >= 0) {
2876 msg.msg_iov->iov_base = host_msg;
2877 ret = get_errno(safe_sendmsg(fd, &msg, flags));
2878 }
2879 g_free(host_msg);
2880 } else {
2881 ret = target_to_host_cmsg(&msg, msgp);
2882 if (ret == 0) {
2883 ret = get_errno(safe_sendmsg(fd, &msg, flags));
2884 }
2885 }
2886 } else {
2887 ret = get_errno(safe_recvmsg(fd, &msg, flags));
2888 if (!is_error(ret)) {
2889 len = ret;
2890 if (fd_trans_host_to_target_data(fd)) {
2891 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
2892 MIN(msg.msg_iov->iov_len, len));
2893 } else {
2894 ret = host_to_target_cmsg(msgp, &msg);
2895 }
2896 if (!is_error(ret)) {
2897 msgp->msg_namelen = tswap32(msg.msg_namelen);
2898 msgp->msg_flags = tswap32(msg.msg_flags);
2899 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
2900 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
2901 msg.msg_name, msg.msg_namelen);
2902 if (ret) {
2903 goto out;
2904 }
2905 }
2906
2907 ret = len;
2908 }
2909 }
2910 }
2911
2912 out:
2913 unlock_iovec(vec, target_vec, count, !send);
2914 out2:
2915 return ret;
2916 }
2917
2918 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
2919 int flags, int send)
2920 {
2921 abi_long ret;
2922 struct target_msghdr *msgp;
2923
2924 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
2925 msgp,
2926 target_msg,
2927 send ? 1 : 0)) {
2928 return -TARGET_EFAULT;
2929 }
2930 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
2931 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
2932 return ret;
2933 }
2934
2935 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
2936 * so it might not have this *mmsg-specific flag either.
2937 */
2938 #ifndef MSG_WAITFORONE
2939 #define MSG_WAITFORONE 0x10000
2940 #endif
2941
2942 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
2943 unsigned int vlen, unsigned int flags,
2944 int send)
2945 {
2946 struct target_mmsghdr *mmsgp;
2947 abi_long ret = 0;
2948 int i;
2949
2950 if (vlen > UIO_MAXIOV) {
2951 vlen = UIO_MAXIOV;
2952 }
2953
2954 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
2955 if (!mmsgp) {
2956 return -TARGET_EFAULT;
2957 }
2958
2959 for (i = 0; i < vlen; i++) {
2960 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
2961 if (is_error(ret)) {
2962 break;
2963 }
2964 mmsgp[i].msg_len = tswap32(ret);
2965 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
2966 if (flags & MSG_WAITFORONE) {
2967 flags |= MSG_DONTWAIT;
2968 }
2969 }
2970
2971 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
2972
2973 /* Return number of datagrams sent if we sent any at all;
2974 * otherwise return the error.
2975 */
2976 if (i) {
2977 return i;
2978 }
2979 return ret;
2980 }
2981
2982 /* do_accept4() Must return target values and target errnos. */
2983 static abi_long do_accept4(int fd, abi_ulong target_addr,
2984 abi_ulong target_addrlen_addr, int flags)
2985 {
2986 socklen_t addrlen, ret_addrlen;
2987 void *addr;
2988 abi_long ret;
2989 int host_flags;
2990
2991 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
2992
2993 if (target_addr == 0) {
2994 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
2995 }
2996
2997 /* linux returns EINVAL if addrlen pointer is invalid */
2998 if (get_user_u32(addrlen, target_addrlen_addr))
2999 return -TARGET_EINVAL;
3000
3001 if ((int)addrlen < 0) {
3002 return -TARGET_EINVAL;
3003 }
3004
3005 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3006 return -TARGET_EINVAL;
3007
3008 addr = alloca(addrlen);
3009
3010 ret_addrlen = addrlen;
3011 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
3012 if (!is_error(ret)) {
3013 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3014 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3015 ret = -TARGET_EFAULT;
3016 }
3017 }
3018 return ret;
3019 }
3020
3021 /* do_getpeername() Must return target values and target errnos. */
3022 static abi_long do_getpeername(int fd, abi_ulong target_addr,
3023 abi_ulong target_addrlen_addr)
3024 {
3025 socklen_t addrlen, ret_addrlen;
3026 void *addr;
3027 abi_long ret;
3028
3029 if (get_user_u32(addrlen, target_addrlen_addr))
3030 return -TARGET_EFAULT;
3031
3032 if ((int)addrlen < 0) {
3033 return -TARGET_EINVAL;
3034 }
3035
3036 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3037 return -TARGET_EFAULT;
3038
3039 addr = alloca(addrlen);
3040
3041 ret_addrlen = addrlen;
3042 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
3043 if (!is_error(ret)) {
3044 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3045 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3046 ret = -TARGET_EFAULT;
3047 }
3048 }
3049 return ret;
3050 }
3051
3052 /* do_getsockname() Must return target values and target errnos. */
3053 static abi_long do_getsockname(int fd, abi_ulong target_addr,
3054 abi_ulong target_addrlen_addr)
3055 {
3056 socklen_t addrlen, ret_addrlen;
3057 void *addr;
3058 abi_long ret;
3059
3060 if (get_user_u32(addrlen, target_addrlen_addr))
3061 return -TARGET_EFAULT;
3062
3063 if ((int)addrlen < 0) {
3064 return -TARGET_EINVAL;
3065 }
3066
3067 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
3068 return -TARGET_EFAULT;
3069
3070 addr = alloca(addrlen);
3071
3072 ret_addrlen = addrlen;
3073 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
3074 if (!is_error(ret)) {
3075 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
3076 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
3077 ret = -TARGET_EFAULT;
3078 }
3079 }
3080 return ret;
3081 }
3082
3083 /* do_socketpair() Must return target values and target errnos. */
3084 static abi_long do_socketpair(int domain, int type, int protocol,
3085 abi_ulong target_tab_addr)
3086 {
3087 int tab[2];
3088 abi_long ret;
3089
3090 target_to_host_sock_type(&type);
3091
3092 ret = get_errno(socketpair(domain, type, protocol, tab));
3093 if (!is_error(ret)) {
3094 if (put_user_s32(tab[0], target_tab_addr)
3095 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
3096 ret = -TARGET_EFAULT;
3097 }
3098 return ret;
3099 }
3100
3101 /* do_sendto() Must return target values and target errnos. */
3102 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3103 abi_ulong target_addr, socklen_t addrlen)
3104 {
3105 void *addr;
3106 void *host_msg;
3107 void *copy_msg = NULL;
3108 abi_long ret;
3109
3110 if ((int)addrlen < 0) {
3111 return -TARGET_EINVAL;
3112 }
3113
3114 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3115 if (!host_msg)
3116 return -TARGET_EFAULT;
3117 if (fd_trans_target_to_host_data(fd)) {
3118 copy_msg = host_msg;
3119 host_msg = g_malloc(len);
3120 memcpy(host_msg, copy_msg, len);
3121 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3122 if (ret < 0) {
3123 goto fail;
3124 }
3125 }
3126 if (target_addr) {
3127 addr = alloca(addrlen+1);
3128 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3129 if (ret) {
3130 goto fail;
3131 }
3132 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3133 } else {
3134 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3135 }
3136 fail:
3137 if (copy_msg) {
3138 g_free(host_msg);
3139 host_msg = copy_msg;
3140 }
3141 unlock_user(host_msg, msg, 0);
3142 return ret;
3143 }
3144
3145 /* do_recvfrom() Must return target values and target errnos. */
3146 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3147 abi_ulong target_addr,
3148 abi_ulong target_addrlen)
3149 {
3150 socklen_t addrlen, ret_addrlen;
3151 void *addr;
3152 void *host_msg;
3153 abi_long ret;
3154
3155 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3156 if (!host_msg)
3157 return -TARGET_EFAULT;
3158 if (target_addr) {
3159 if (get_user_u32(addrlen, target_addrlen)) {
3160 ret = -TARGET_EFAULT;
3161 goto fail;
3162 }
3163 if ((int)addrlen < 0) {
3164 ret = -TARGET_EINVAL;
3165 goto fail;
3166 }
3167 addr = alloca(addrlen);
3168 ret_addrlen = addrlen;
3169 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3170 addr, &ret_addrlen));
3171 } else {
3172 addr = NULL; /* To keep compiler quiet. */
3173 addrlen = 0; /* To keep compiler quiet. */
3174 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3175 }
3176 if (!is_error(ret)) {
3177 if (fd_trans_host_to_target_data(fd)) {
3178 abi_long trans;
3179 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3180 if (is_error(trans)) {
3181 ret = trans;
3182 goto fail;
3183 }
3184 }
3185 if (target_addr) {
3186 host_to_target_sockaddr(target_addr, addr,
3187 MIN(addrlen, ret_addrlen));
3188 if (put_user_u32(ret_addrlen, target_addrlen)) {
3189 ret = -TARGET_EFAULT;
3190 goto fail;
3191 }
3192 }
3193 unlock_user(host_msg, msg, len);
3194 } else {
3195 fail:
3196 unlock_user(host_msg, msg, 0);
3197 }
3198 return ret;
3199 }
3200
3201 #ifdef TARGET_NR_socketcall
3202 /* do_socketcall() must return target values and target errnos. */
3203 static abi_long do_socketcall(int num, abi_ulong vptr)
3204 {
3205 static const unsigned nargs[] = { /* number of arguments per operation */
3206 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3207 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3208 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3209 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3210 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3211 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3212 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3213 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3214 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3215 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3216 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3217 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3218 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3219 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3220 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3221 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3222 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3223 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3224 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3225 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3226 };
3227 abi_long a[6]; /* max 6 args */
3228 unsigned i;
3229
3230 /* check the range of the first argument num */
3231 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3232 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3233 return -TARGET_EINVAL;
3234 }
3235 /* ensure we have space for args */
3236 if (nargs[num] > ARRAY_SIZE(a)) {
3237 return -TARGET_EINVAL;
3238 }
3239 /* collect the arguments in a[] according to nargs[] */
3240 for (i = 0; i < nargs[num]; ++i) {
3241 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3242 return -TARGET_EFAULT;
3243 }
3244 }
3245 /* now when we have the args, invoke the appropriate underlying function */
3246 switch (num) {
3247 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3248 return do_socket(a[0], a[1], a[2]);
3249 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3250 return do_bind(a[0], a[1], a[2]);
3251 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3252 return do_connect(a[0], a[1], a[2]);
3253 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3254 return get_errno(listen(a[0], a[1]));
3255 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3256 return do_accept4(a[0], a[1], a[2], 0);
3257 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3258 return do_getsockname(a[0], a[1], a[2]);
3259 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3260 return do_getpeername(a[0], a[1], a[2]);
3261 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3262 return do_socketpair(a[0], a[1], a[2], a[3]);
3263 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3264 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3265 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3266 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3267 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3268 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3269 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3270 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3271 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3272 return get_errno(shutdown(a[0], a[1]));
3273 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3274 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3275 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3276 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3277 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3278 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3279 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3280 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3281 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3282 return do_accept4(a[0], a[1], a[2], a[3]);
3283 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3284 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3285 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3286 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3287 default:
3288 gemu_log("Unsupported socketcall: %d\n", num);
3289 return -TARGET_EINVAL;
3290 }
3291 }
3292 #endif
3293
3294 #define N_SHM_REGIONS 32
3295
3296 static struct shm_region {
3297 abi_ulong start;
3298 abi_ulong size;
3299 bool in_use;
3300 } shm_regions[N_SHM_REGIONS];
3301
3302 #ifndef TARGET_SEMID64_DS
3303 /* asm-generic version of this struct */
3304 struct target_semid64_ds
3305 {
3306 struct target_ipc_perm sem_perm;
3307 abi_ulong sem_otime;
3308 #if TARGET_ABI_BITS == 32
3309 abi_ulong __unused1;
3310 #endif
3311 abi_ulong sem_ctime;
3312 #if TARGET_ABI_BITS == 32
3313 abi_ulong __unused2;
3314 #endif
3315 abi_ulong sem_nsems;
3316 abi_ulong __unused3;
3317 abi_ulong __unused4;
3318 };
3319 #endif
3320
3321 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3322 abi_ulong target_addr)
3323 {
3324 struct target_ipc_perm *target_ip;
3325 struct target_semid64_ds *target_sd;
3326
3327 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3328 return -TARGET_EFAULT;
3329 target_ip = &(target_sd->sem_perm);
3330 host_ip->__key = tswap32(target_ip->__key);
3331 host_ip->uid = tswap32(target_ip->uid);
3332 host_ip->gid = tswap32(target_ip->gid);
3333 host_ip->cuid = tswap32(target_ip->cuid);
3334 host_ip->cgid = tswap32(target_ip->cgid);
3335 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3336 host_ip->mode = tswap32(target_ip->mode);
3337 #else
3338 host_ip->mode = tswap16(target_ip->mode);
3339 #endif
3340 #if defined(TARGET_PPC)
3341 host_ip->__seq = tswap32(target_ip->__seq);
3342 #else
3343 host_ip->__seq = tswap16(target_ip->__seq);
3344 #endif
3345 unlock_user_struct(target_sd, target_addr, 0);
3346 return 0;
3347 }
3348
3349 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3350 struct ipc_perm *host_ip)
3351 {
3352 struct target_ipc_perm *target_ip;
3353 struct target_semid64_ds *target_sd;
3354
3355 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3356 return -TARGET_EFAULT;
3357 target_ip = &(target_sd->sem_perm);
3358 target_ip->__key = tswap32(host_ip->__key);
3359 target_ip->uid = tswap32(host_ip->uid);
3360 target_ip->gid = tswap32(host_ip->gid);
3361 target_ip->cuid = tswap32(host_ip->cuid);
3362 target_ip->cgid = tswap32(host_ip->cgid);
3363 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3364 target_ip->mode = tswap32(host_ip->mode);
3365 #else
3366 target_ip->mode = tswap16(host_ip->mode);
3367 #endif
3368 #if defined(TARGET_PPC)
3369 target_ip->__seq = tswap32(host_ip->__seq);
3370 #else
3371 target_ip->__seq = tswap16(host_ip->__seq);
3372 #endif
3373 unlock_user_struct(target_sd, target_addr, 1);
3374 return 0;
3375 }
3376
3377 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3378 abi_ulong target_addr)
3379 {
3380 struct target_semid64_ds *target_sd;
3381
3382 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3383 return -TARGET_EFAULT;
3384 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3385 return -TARGET_EFAULT;
3386 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3387 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3388 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3389 unlock_user_struct(target_sd, target_addr, 0);
3390 return 0;
3391 }
3392
3393 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3394 struct semid_ds *host_sd)
3395 {
3396 struct target_semid64_ds *target_sd;
3397
3398 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3399 return -TARGET_EFAULT;
3400 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3401 return -TARGET_EFAULT;
3402 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3403 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3404 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3405 unlock_user_struct(target_sd, target_addr, 1);
3406 return 0;
3407 }
3408
3409 struct target_seminfo {
3410 int semmap;
3411 int semmni;
3412 int semmns;
3413 int semmnu;
3414 int semmsl;
3415 int semopm;
3416 int semume;
3417 int semusz;
3418 int semvmx;
3419 int semaem;
3420 };
3421
3422 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3423 struct seminfo *host_seminfo)
3424 {
3425 struct target_seminfo *target_seminfo;
3426 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3427 return -TARGET_EFAULT;
3428 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3429 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3430 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3431 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3432 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3433 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3434 __put_user(host_seminfo->semume, &target_seminfo->semume);
3435 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3436 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3437 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3438 unlock_user_struct(target_seminfo, target_addr, 1);
3439 return 0;
3440 }
3441
3442 union semun {
3443 int val;
3444 struct semid_ds *buf;
3445 unsigned short *array;
3446 struct seminfo *__buf;
3447 };
3448
3449 union target_semun {
3450 int val;
3451 abi_ulong buf;
3452 abi_ulong array;
3453 abi_ulong __buf;
3454 };
3455
3456 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3457 abi_ulong target_addr)
3458 {
3459 int nsems;
3460 unsigned short *array;
3461 union semun semun;
3462 struct semid_ds semid_ds;
3463 int i, ret;
3464
3465 semun.buf = &semid_ds;
3466
3467 ret = semctl(semid, 0, IPC_STAT, semun);
3468 if (ret == -1)
3469 return get_errno(ret);
3470
3471 nsems = semid_ds.sem_nsems;
3472
3473 *host_array = g_try_new(unsigned short, nsems);
3474 if (!*host_array) {
3475 return -TARGET_ENOMEM;
3476 }
3477 array = lock_user(VERIFY_READ, target_addr,
3478 nsems*sizeof(unsigned short), 1);
3479 if (!array) {
3480 g_free(*host_array);
3481 return -TARGET_EFAULT;
3482 }
3483
3484 for(i=0; i<nsems; i++) {
3485 __get_user((*host_array)[i], &array[i]);
3486 }
3487 unlock_user(array, target_addr, 0);
3488
3489 return 0;
3490 }
3491
3492 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3493 unsigned short **host_array)
3494 {
3495 int nsems;
3496 unsigned short *array;
3497 union semun semun;
3498 struct semid_ds semid_ds;
3499 int i, ret;
3500
3501 semun.buf = &semid_ds;
3502
3503 ret = semctl(semid, 0, IPC_STAT, semun);
3504 if (ret == -1)
3505 return get_errno(ret);
3506
3507 nsems = semid_ds.sem_nsems;
3508
3509 array = lock_user(VERIFY_WRITE, target_addr,
3510 nsems*sizeof(unsigned short), 0);
3511 if (!array)
3512 return -TARGET_EFAULT;
3513
3514 for(i=0; i<nsems; i++) {
3515 __put_user((*host_array)[i], &array[i]);
3516 }
3517 g_free(*host_array);
3518 unlock_user(array, target_addr, 1);
3519
3520 return 0;
3521 }
3522
3523 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3524 abi_ulong target_arg)
3525 {
3526 union target_semun target_su = { .buf = target_arg };
3527 union semun arg;
3528 struct semid_ds dsarg;
3529 unsigned short *array = NULL;
3530 struct seminfo seminfo;
3531 abi_long ret = -TARGET_EINVAL;
3532 abi_long err;
3533 cmd &= 0xff;
3534
3535 switch( cmd ) {
3536 case GETVAL:
3537 case SETVAL:
3538 /* In 64 bit cross-endian situations, we will erroneously pick up
3539 * the wrong half of the union for the "val" element. To rectify
3540 * this, the entire 8-byte structure is byteswapped, followed by
3541 * a swap of the 4 byte val field. In other cases, the data is
3542 * already in proper host byte order. */
3543 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
3544 target_su.buf = tswapal(target_su.buf);
3545 arg.val = tswap32(target_su.val);
3546 } else {
3547 arg.val = target_su.val;
3548 }
3549 ret = get_errno(semctl(semid, semnum, cmd, arg));
3550 break;
3551 case GETALL:
3552 case SETALL:
3553 err = target_to_host_semarray(semid, &array, target_su.array);
3554 if (err)
3555 return err;
3556 arg.array = array;
3557 ret = get_errno(semctl(semid, semnum, cmd, arg));
3558 err = host_to_target_semarray(semid, target_su.array, &array);
3559 if (err)
3560 return err;
3561 break;
3562 case IPC_STAT:
3563 case IPC_SET:
3564 case SEM_STAT:
3565 err = target_to_host_semid_ds(&dsarg, target_su.buf);
3566 if (err)
3567 return err;
3568 arg.buf = &dsarg;
3569 ret = get_errno(semctl(semid, semnum, cmd, arg));
3570 err = host_to_target_semid_ds(target_su.buf, &dsarg);
3571 if (err)
3572 return err;
3573 break;
3574 case IPC_INFO:
3575 case SEM_INFO:
3576 arg.__buf = &seminfo;
3577 ret = get_errno(semctl(semid, semnum, cmd, arg));
3578 err = host_to_target_seminfo(target_su.__buf, &seminfo);
3579 if (err)
3580 return err;
3581 break;
3582 case IPC_RMID:
3583 case GETPID:
3584 case GETNCNT:
3585 case GETZCNT:
3586 ret = get_errno(semctl(semid, semnum, cmd, NULL));
3587 break;
3588 }
3589
3590 return ret;
3591 }
3592
3593 struct target_sembuf {
3594 unsigned short sem_num;
3595 short sem_op;
3596 short sem_flg;
3597 };
3598
3599 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
3600 abi_ulong target_addr,
3601 unsigned nsops)
3602 {
3603 struct target_sembuf *target_sembuf;
3604 int i;
3605
3606 target_sembuf = lock_user(VERIFY_READ, target_addr,
3607 nsops*sizeof(struct target_sembuf), 1);
3608 if (!target_sembuf)
3609 return -TARGET_EFAULT;
3610
3611 for(i=0; i<nsops; i++) {
3612 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
3613 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
3614 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
3615 }
3616
3617 unlock_user(target_sembuf, target_addr, 0);
3618
3619 return 0;
3620 }
3621
3622 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
3623 {
3624 struct sembuf sops[nsops];
3625 abi_long ret;
3626
3627 if (target_to_host_sembuf(sops, ptr, nsops))
3628 return -TARGET_EFAULT;
3629
3630 ret = -TARGET_ENOSYS;
3631 #ifdef __NR_semtimedop
3632 ret = get_errno(safe_semtimedop(semid, sops, nsops, NULL));
3633 #endif
3634 #ifdef __NR_ipc
3635 if (ret == -TARGET_ENOSYS) {
3636 ret = get_errno(safe_ipc(IPCOP_semtimedop, semid, nsops, 0, sops, 0));
3637 }
3638 #endif
3639 return ret;
3640 }
3641
3642 struct target_msqid_ds
3643 {
3644 struct target_ipc_perm msg_perm;
3645 abi_ulong msg_stime;
3646 #if TARGET_ABI_BITS == 32
3647 abi_ulong __unused1;
3648 #endif
3649 abi_ulong msg_rtime;
3650 #if TARGET_ABI_BITS == 32
3651 abi_ulong __unused2;
3652 #endif
3653 abi_ulong msg_ctime;
3654 #if TARGET_ABI_BITS == 32
3655 abi_ulong __unused3;
3656 #endif
3657 abi_ulong __msg_cbytes;
3658 abi_ulong msg_qnum;
3659 abi_ulong msg_qbytes;
3660 abi_ulong msg_lspid;
3661 abi_ulong msg_lrpid;
3662 abi_ulong __unused4;
3663 abi_ulong __unused5;
3664 };
3665
3666 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
3667 abi_ulong target_addr)
3668 {
3669 struct target_msqid_ds *target_md;
3670
3671 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
3672 return -TARGET_EFAULT;
3673 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
3674 return -TARGET_EFAULT;
3675 host_md->msg_stime = tswapal(target_md->msg_stime);
3676 host_md->msg_rtime = tswapal(target_md->msg_rtime);
3677 host_md->msg_ctime = tswapal(target_md->msg_ctime);
3678 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
3679 host_md->msg_qnum = tswapal(target_md->msg_qnum);
3680 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
3681 host_md->msg_lspid = tswapal(target_md->msg_lspid);
3682 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
3683 unlock_user_struct(target_md, target_addr, 0);
3684 return 0;
3685 }
3686
3687 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
3688 struct msqid_ds *host_md)
3689 {
3690 struct target_msqid_ds *target_md;
3691
3692 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
3693 return -TARGET_EFAULT;
3694 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
3695 return -TARGET_EFAULT;
3696 target_md->msg_stime = tswapal(host_md->msg_stime);
3697 target_md->msg_rtime = tswapal(host_md->msg_rtime);
3698 target_md->msg_ctime = tswapal(host_md->msg_ctime);
3699 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
3700 target_md->msg_qnum = tswapal(host_md->msg_qnum);
3701 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
3702 target_md->msg_lspid = tswapal(host_md->msg_lspid);
3703 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
3704 unlock_user_struct(target_md, target_addr, 1);
3705 return 0;
3706 }
3707
3708 struct target_msginfo {
3709 int msgpool;
3710 int msgmap;
3711 int msgmax;
3712 int msgmnb;
3713 int msgmni;
3714 int msgssz;
3715 int msgtql;
3716 unsigned short int msgseg;
3717 };
3718
3719 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
3720 struct msginfo *host_msginfo)
3721 {
3722 struct target_msginfo *target_msginfo;
3723 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
3724 return -TARGET_EFAULT;
3725 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
3726 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
3727 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
3728 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
3729 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
3730 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
3731 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
3732 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
3733 unlock_user_struct(target_msginfo, target_addr, 1);
3734 return 0;
3735 }
3736
3737 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
3738 {
3739 struct msqid_ds dsarg;
3740 struct msginfo msginfo;
3741 abi_long ret = -TARGET_EINVAL;
3742
3743 cmd &= 0xff;
3744
3745 switch (cmd) {
3746 case IPC_STAT:
3747 case IPC_SET:
3748 case MSG_STAT:
3749 if (target_to_host_msqid_ds(&dsarg,ptr))
3750 return -TARGET_EFAULT;
3751 ret = get_errno(msgctl(msgid, cmd, &dsarg));
3752 if (host_to_target_msqid_ds(ptr,&dsarg))
3753 return -TARGET_EFAULT;
3754 break;
3755 case IPC_RMID:
3756 ret = get_errno(msgctl(msgid, cmd, NULL));
3757 break;
3758 case IPC_INFO:
3759 case MSG_INFO:
3760 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
3761 if (host_to_target_msginfo(ptr, &msginfo))
3762 return -TARGET_EFAULT;
3763 break;
3764 }
3765
3766 return ret;
3767 }
3768
3769 struct target_msgbuf {
3770 abi_long mtype;
3771 char mtext[1];
3772 };
3773
3774 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
3775 ssize_t msgsz, int msgflg)
3776 {
3777 struct target_msgbuf *target_mb;
3778 struct msgbuf *host_mb;
3779 abi_long ret = 0;
3780
3781 if (msgsz < 0) {
3782 return -TARGET_EINVAL;
3783 }
3784
3785 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
3786 return -TARGET_EFAULT;
3787 host_mb = g_try_malloc(msgsz + sizeof(long));
3788 if (!host_mb) {
3789 unlock_user_struct(target_mb, msgp, 0);
3790 return -TARGET_ENOMEM;
3791 }
3792 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
3793 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
3794 ret = -TARGET_ENOSYS;
3795 #ifdef __NR_msgsnd
3796 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
3797 #endif
3798 #ifdef __NR_ipc
3799 if (ret == -TARGET_ENOSYS) {
3800 ret = get_errno(safe_ipc(IPCOP_msgsnd, msqid, msgsz, msgflg,
3801 host_mb, 0));
3802 }
3803 #endif
3804 g_free(host_mb);
3805 unlock_user_struct(target_mb, msgp, 0);
3806
3807 return ret;
3808 }
3809
3810 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
3811 ssize_t msgsz, abi_long msgtyp,
3812 int msgflg)
3813 {
3814 struct target_msgbuf *target_mb;
3815 char *target_mtext;
3816 struct msgbuf *host_mb;
3817 abi_long ret = 0;
3818
3819 if (msgsz < 0) {
3820 return -TARGET_EINVAL;
3821 }
3822
3823 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
3824 return -TARGET_EFAULT;
3825
3826 host_mb = g_try_malloc(msgsz + sizeof(long));
3827 if (!host_mb) {
3828 ret = -TARGET_ENOMEM;
3829 goto end;
3830 }
3831 ret = -TARGET_ENOSYS;
3832 #ifdef __NR_msgrcv
3833 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
3834 #endif
3835 #ifdef __NR_ipc
3836 if (ret == -TARGET_ENOSYS) {
3837 ret = get_errno(safe_ipc(IPCOP_CALL(1, IPCOP_msgrcv), msqid, msgsz,
3838 msgflg, host_mb, msgtyp));
3839 }
3840 #endif
3841
3842 if (ret > 0) {
3843 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
3844 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
3845 if (!target_mtext) {
3846 ret = -TARGET_EFAULT;
3847 goto end;
3848 }
3849 memcpy(target_mb->mtext, host_mb->mtext, ret);
3850 unlock_user(target_mtext, target_mtext_addr, ret);
3851 }
3852
3853 target_mb->mtype = tswapal(host_mb->mtype);
3854
3855 end:
3856 if (target_mb)
3857 unlock_user_struct(target_mb, msgp, 1);
3858 g_free(host_mb);
3859 return ret;
3860 }
3861
3862 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
3863 abi_ulong target_addr)
3864 {
3865 struct target_shmid_ds *target_sd;
3866
3867 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3868 return -TARGET_EFAULT;
3869 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
3870 return -TARGET_EFAULT;
3871 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
3872 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
3873 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
3874 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
3875 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
3876 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
3877 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
3878 unlock_user_struct(target_sd, target_addr, 0);
3879 return 0;
3880 }
3881
3882 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
3883 struct shmid_ds *host_sd)
3884 {
3885 struct target_shmid_ds *target_sd;
3886
3887 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3888 return -TARGET_EFAULT;
3889 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
3890 return -TARGET_EFAULT;
3891 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
3892 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
3893 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
3894 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
3895 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
3896 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
3897 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
3898 unlock_user_struct(target_sd, target_addr, 1);
3899 return 0;
3900 }
3901
3902 struct target_shminfo {
3903 abi_ulong shmmax;
3904 abi_ulong shmmin;
3905 abi_ulong shmmni;
3906 abi_ulong shmseg;
3907 abi_ulong shmall;
3908 };
3909
3910 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
3911 struct shminfo *host_shminfo)
3912 {
3913 struct target_shminfo *target_shminfo;
3914 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
3915 return -TARGET_EFAULT;
3916 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
3917 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
3918 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
3919 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
3920 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
3921 unlock_user_struct(target_shminfo, target_addr, 1);
3922 return 0;
3923 }
3924
3925 struct target_shm_info {
3926 int used_ids;
3927 abi_ulong shm_tot;
3928 abi_ulong shm_rss;
3929 abi_ulong shm_swp;
3930 abi_ulong swap_attempts;
3931 abi_ulong swap_successes;
3932 };
3933
3934 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
3935 struct shm_info *host_shm_info)
3936 {
3937 struct target_shm_info *target_shm_info;
3938 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
3939 return -TARGET_EFAULT;
3940 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
3941 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
3942 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
3943 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
3944 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
3945 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
3946 unlock_user_struct(target_shm_info, target_addr, 1);
3947 return 0;
3948 }
3949
3950 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
3951 {
3952 struct shmid_ds dsarg;
3953 struct shminfo shminfo;
3954 struct shm_info shm_info;
3955 abi_long ret = -TARGET_EINVAL;
3956
3957 cmd &= 0xff;
3958
3959 switch(cmd) {
3960 case IPC_STAT:
3961 case IPC_SET:
3962 case SHM_STAT:
3963 if (target_to_host_shmid_ds(&dsarg, buf))
3964 return -TARGET_EFAULT;
3965 ret = get_errno(shmctl(shmid, cmd, &dsarg));
3966 if (host_to_target_shmid_ds(buf, &dsarg))
3967 return -TARGET_EFAULT;
3968 break;
3969 case IPC_INFO:
3970 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
3971 if (host_to_target_shminfo(buf, &shminfo))
3972 return -TARGET_EFAULT;
3973 break;
3974 case SHM_INFO:
3975 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
3976 if (host_to_target_shm_info(buf, &shm_info))
3977 return -TARGET_EFAULT;
3978 break;
3979 case IPC_RMID:
3980 case SHM_LOCK:
3981 case SHM_UNLOCK:
3982 ret = get_errno(shmctl(shmid, cmd, NULL));
3983 break;
3984 }
3985
3986 return ret;
3987 }
3988
3989 #ifndef TARGET_FORCE_SHMLBA
3990 /* For most architectures, SHMLBA is the same as the page size;
3991 * some architectures have larger values, in which case they should
3992 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
3993 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
3994 * and defining its own value for SHMLBA.
3995 *
3996 * The kernel also permits SHMLBA to be set by the architecture to a
3997 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
3998 * this means that addresses are rounded to the large size if
3999 * SHM_RND is set but addresses not aligned to that size are not rejected
4000 * as long as they are at least page-aligned. Since the only architecture
4001 * which uses this is ia64 this code doesn't provide for that oddity.
4002 */
4003 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
4004 {
4005 return TARGET_PAGE_SIZE;
4006 }
4007 #endif
4008
4009 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
4010 int shmid, abi_ulong shmaddr, int shmflg)
4011 {
4012 abi_long raddr;
4013 void *host_raddr;
4014 struct shmid_ds shm_info;
4015 int i,ret;
4016 abi_ulong shmlba;
4017
4018 /* find out the length of the shared memory segment */
4019 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
4020 if (is_error(ret)) {
4021 /* can't get length, bail out */
4022 return ret;
4023 }
4024
4025 shmlba = target_shmlba(cpu_env);
4026
4027 if (shmaddr & (shmlba - 1)) {
4028 if (shmflg & SHM_RND) {
4029 shmaddr &= ~(shmlba - 1);
4030 } else {
4031 return -TARGET_EINVAL;
4032 }
4033 }
4034 if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) {
4035 return -TARGET_EINVAL;
4036 }
4037
4038 mmap_lock();
4039
4040 if (shmaddr)
4041 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
4042 else {
4043 abi_ulong mmap_start;
4044
4045 /* In order to use the host shmat, we need to honor host SHMLBA. */
4046 mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
4047
4048 if (mmap_start == -1) {
4049 errno = ENOMEM;
4050 host_raddr = (void *)-1;
4051 } else
4052 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
4053 }
4054
4055 if (host_raddr == (void *)-1) {
4056 mmap_unlock();
4057 return get_errno((long)host_raddr);
4058 }
4059 raddr=h2g((unsigned long)host_raddr);
4060
4061 page_set_flags(raddr, raddr + shm_info.shm_segsz,
4062 PAGE_VALID | PAGE_READ |
4063 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
4064
4065 for (i = 0; i < N_SHM_REGIONS; i++) {
4066 if (!shm_regions[i].in_use) {
4067 shm_regions[i].in_use = true;
4068 shm_regions[i].start = raddr;
4069 shm_regions[i].size = shm_info.shm_segsz;
4070 break;
4071 }
4072 }
4073
4074 mmap_unlock();
4075 return raddr;
4076
4077 }
4078
4079 static inline abi_long do_shmdt(abi_ulong shmaddr)
4080 {
4081 int i;
4082 abi_long rv;
4083
4084 mmap_lock();
4085
4086 for (i = 0; i < N_SHM_REGIONS; ++i) {
4087 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
4088 shm_regions[i].in_use = false;
4089 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
4090 break;
4091 }
4092 }
4093 rv = get_errno(shmdt(g2h(shmaddr)));
4094
4095 mmap_unlock();
4096
4097 return rv;
4098 }
4099
4100 #ifdef TARGET_NR_ipc
4101 /* ??? This only works with linear mappings. */
4102 /* do_ipc() must return target values and target errnos. */
4103 static abi_long do_ipc(CPUArchState *cpu_env,
4104 unsigned int call, abi_long first,
4105 abi_long second, abi_long third,
4106 abi_long ptr, abi_long fifth)
4107 {
4108 int version;
4109 abi_long ret = 0;
4110
4111 version = call >> 16;
4112 call &= 0xffff;
4113
4114 switch (call) {
4115 case IPCOP_semop:
4116 ret = do_semop(first, ptr, second);
4117 break;
4118
4119 case IPCOP_semget:
4120 ret = get_errno(semget(first, second, third));
4121 break;
4122
4123 case IPCOP_semctl: {
4124 /* The semun argument to semctl is passed by value, so dereference the
4125 * ptr argument. */
4126 abi_ulong atptr;
4127 get_user_ual(atptr, ptr);
4128 ret = do_semctl(first, second, third, atptr);
4129 break;
4130 }
4131
4132 case IPCOP_msgget:
4133 ret = get_errno(msgget(first, second));
4134 break;
4135
4136 case IPCOP_msgsnd:
4137 ret = do_msgsnd(first, ptr, second, third);
4138 break;
4139
4140 case IPCOP_msgctl:
4141 ret = do_msgctl(first, second, ptr);
4142 break;
4143
4144 case IPCOP_msgrcv:
4145 switch (version) {
4146 case 0:
4147 {
4148 struct target_ipc_kludge {
4149 abi_long msgp;
4150 abi_long msgtyp;
4151 } *tmp;
4152
4153 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4154 ret = -TARGET_EFAULT;
4155 break;
4156 }
4157
4158 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4159
4160 unlock_user_struct(tmp, ptr, 0);
4161 break;
4162 }
4163 default:
4164 ret = do_msgrcv(first, ptr, second, fifth, third);
4165 }
4166 break;
4167
4168 case IPCOP_shmat:
4169 switch (version) {
4170 default:
4171 {
4172 abi_ulong raddr;
4173 raddr = do_shmat(cpu_env, first, ptr, second);
4174 if (is_error(raddr))
4175 return get_errno(raddr);
4176 if (put_user_ual(raddr, third))
4177 return -TARGET_EFAULT;
4178 break;
4179 }
4180 case 1:
4181 ret = -TARGET_EINVAL;
4182 break;
4183 }
4184 break;
4185 case IPCOP_shmdt:
4186 ret = do_shmdt(ptr);
4187 break;
4188
4189 case IPCOP_shmget:
4190 /* IPC_* flag values are the same on all linux platforms */
4191 ret = get_errno(shmget(first, second, third));
4192 break;
4193
4194 /* IPC_* and SHM_* command values are the same on all linux platforms */
4195 case IPCOP_shmctl:
4196 ret = do_shmctl(first, second, ptr);
4197 break;
4198 default:
4199 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version);
4200 ret = -TARGET_ENOSYS;
4201 break;
4202 }
4203 return ret;
4204 }
4205 #endif
4206
4207 /* kernel structure types definitions */
4208
4209 #define STRUCT(name, ...) STRUCT_ ## name,
4210 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4211 enum {
4212 #include "syscall_types.h"
4213 STRUCT_MAX
4214 };
4215 #undef STRUCT
4216 #undef STRUCT_SPECIAL
4217
4218 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4219 #define STRUCT_SPECIAL(name)
4220 #include "syscall_types.h"
4221 #undef STRUCT
4222 #undef STRUCT_SPECIAL
4223
4224 typedef struct IOCTLEntry IOCTLEntry;
4225
4226 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
4227 int fd, int cmd, abi_long arg);
4228
4229 struct IOCTLEntry {
4230 int target_cmd;
4231 unsigned int host_cmd;
4232 const char *name;
4233 int access;
4234 do_ioctl_fn *do_ioctl;
4235 const argtype arg_type[5];
4236 };
4237
4238 #define IOC_R 0x0001
4239 #define IOC_W 0x0002
4240 #define IOC_RW (IOC_R | IOC_W)
4241
4242 #define MAX_STRUCT_SIZE 4096
4243
4244 #ifdef CONFIG_FIEMAP
4245 /* So fiemap access checks don't overflow on 32 bit systems.
4246 * This is very slightly smaller than the limit imposed by
4247 * the underlying kernel.
4248 */
4249 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4250 / sizeof(struct fiemap_extent))
4251
4252 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4253 int fd, int cmd, abi_long arg)
4254 {
4255 /* The parameter for this ioctl is a struct fiemap followed
4256 * by an array of struct fiemap_extent whose size is set
4257 * in fiemap->fm_extent_count. The array is filled in by the
4258 * ioctl.
4259 */
4260 int target_size_in, target_size_out;
4261 struct fiemap *fm;
4262 const argtype *arg_type = ie->arg_type;
4263 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4264 void *argptr, *p;
4265 abi_long ret;
4266 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4267 uint32_t outbufsz;
4268 int free_fm = 0;
4269
4270 assert(arg_type[0] == TYPE_PTR);
4271 assert(ie->access == IOC_RW);
4272 arg_type++;
4273 target_size_in = thunk_type_size(arg_type, 0);
4274 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4275 if (!argptr) {
4276 return -TARGET_EFAULT;
4277 }
4278 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4279 unlock_user(argptr, arg, 0);
4280 fm = (struct fiemap *)buf_temp;
4281 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4282 return -TARGET_EINVAL;
4283 }
4284
4285 outbufsz = sizeof (*fm) +
4286 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4287
4288 if (outbufsz > MAX_STRUCT_SIZE) {
4289 /* We can't fit all the extents into the fixed size buffer.
4290 * Allocate one that is large enough and use it instead.
4291 */
4292 fm = g_try_malloc(outbufsz);
4293 if (!fm) {
4294 return -TARGET_ENOMEM;
4295 }
4296 memcpy(fm, buf_temp, sizeof(struct fiemap));
4297 free_fm = 1;
4298 }
4299 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4300 if (!is_error(ret)) {
4301 target_size_out = target_size_in;
4302 /* An extent_count of 0 means we were only counting the extents
4303 * so there are no structs to copy
4304 */
4305 if (fm->fm_extent_count != 0) {
4306 target_size_out += fm->fm_mapped_extents * extent_size;
4307 }
4308 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4309 if (!argptr) {
4310 ret = -TARGET_EFAULT;
4311 } else {
4312 /* Convert the struct fiemap */
4313 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4314 if (fm->fm_extent_count != 0) {
4315 p = argptr + target_size_in;
4316 /* ...and then all the struct fiemap_extents */
4317 for (i = 0; i < fm->fm_mapped_extents; i++) {
4318 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4319 THUNK_TARGET);
4320 p += extent_size;
4321 }
4322 }
4323 unlock_user(argptr, arg, target_size_out);
4324 }
4325 }
4326 if (free_fm) {
4327 g_free(fm);
4328 }
4329 return ret;
4330 }
4331 #endif
4332
4333 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4334 int fd, int cmd, abi_long arg)
4335 {
4336 const argtype *arg_type = ie->arg_type;
4337 int target_size;
4338 void *argptr;
4339 int ret;
4340 struct ifconf *host_ifconf;
4341 uint32_t outbufsz;
4342 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4343 int target_ifreq_size;
4344 int nb_ifreq;
4345 int free_buf = 0;
4346 int i;
4347 int target_ifc_len;
4348 abi_long target_ifc_buf;
4349 int host_ifc_len;
4350 char *host_ifc_buf;
4351
4352 assert(arg_type[0] == TYPE_PTR);
4353 assert(ie->access == IOC_RW);
4354
4355 arg_type++;
4356 target_size = thunk_type_size(arg_type, 0);
4357
4358 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4359 if (!argptr)
4360 return -TARGET_EFAULT;
4361 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4362 unlock_user(argptr, arg, 0);
4363
4364 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4365 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4366 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
4367
4368 if (target_ifc_buf != 0) {
4369 target_ifc_len = host_ifconf->ifc_len;
4370 nb_ifreq = target_ifc_len / target_ifreq_size;
4371 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4372
4373 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4374 if (outbufsz > MAX_STRUCT_SIZE) {
4375 /*
4376 * We can't fit all the extents into the fixed size buffer.
4377 * Allocate one that is large enough and use it instead.
4378 */
4379 host_ifconf = malloc(outbufsz);
4380 if (!host_ifconf) {
4381 return -TARGET_ENOMEM;
4382 }
4383 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4384 free_buf = 1;
4385 }
4386 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4387
4388 host_ifconf->ifc_len = host_ifc_len;
4389 } else {
4390 host_ifc_buf = NULL;
4391 }
4392 host_ifconf->ifc_buf = host_ifc_buf;
4393
4394 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4395 if (!is_error(ret)) {
4396 /* convert host ifc_len to target ifc_len */
4397
4398 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4399 target_ifc_len = nb_ifreq * target_ifreq_size;
4400 host_ifconf->ifc_len = target_ifc_len;
4401
4402 /* restore target ifc_buf */
4403
4404 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4405
4406 /* copy struct ifconf to target user */
4407
4408 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4409 if (!argptr)
4410 return -TARGET_EFAULT;
4411 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4412 unlock_user(argptr, arg, target_size);
4413
4414 if (target_ifc_buf != 0) {
4415 /* copy ifreq[] to target user */
4416 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4417 for (i = 0; i < nb_ifreq ; i++) {
4418 thunk_convert(argptr + i * target_ifreq_size,
4419 host_ifc_buf + i * sizeof(struct ifreq),
4420 ifreq_arg_type, THUNK_TARGET);
4421 }
4422 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4423 }
4424 }
4425
4426 if (free_buf) {
4427 free(host_ifconf);
4428 }
4429
4430 return ret;
4431 }
4432
4433 #if defined(CONFIG_USBFS)
4434 #if HOST_LONG_BITS > 64
4435 #error USBDEVFS thunks do not support >64 bit hosts yet.
4436 #endif
4437 struct live_urb {
4438 uint64_t target_urb_adr;
4439 uint64_t target_buf_adr;
4440 char *target_buf_ptr;
4441 struct usbdevfs_urb host_urb;
4442 };
4443
4444 static GHashTable *usbdevfs_urb_hashtable(void)
4445 {
4446 static GHashTable *urb_hashtable;
4447
4448 if (!urb_hashtable) {
4449 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4450 }
4451 return urb_hashtable;
4452 }
4453
4454 static void urb_hashtable_insert(struct live_urb *urb)
4455 {
4456 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4457 g_hash_table_insert(urb_hashtable, urb, urb);
4458 }
4459
4460 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4461 {
4462 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4463 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
4464 }
4465
4466 static void urb_hashtable_remove(struct live_urb *urb)
4467 {
4468 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4469 g_hash_table_remove(urb_hashtable, urb);
4470 }
4471
4472 static abi_long
4473 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
4474 int fd, int cmd, abi_long arg)
4475 {
4476 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
4477 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
4478 struct live_urb *lurb;
4479 void *argptr;
4480 uint64_t hurb;
4481 int target_size;
4482 uintptr_t target_urb_adr;
4483 abi_long ret;
4484
4485 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
4486
4487 memset(buf_temp, 0, sizeof(uint64_t));
4488 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4489 if (is_error(ret)) {
4490 return ret;
4491 }
4492
4493 memcpy(&hurb, buf_temp, sizeof(uint64_t));
4494 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
4495 if (!lurb->target_urb_adr) {
4496 return -TARGET_EFAULT;
4497 }
4498 urb_hashtable_remove(lurb);
4499 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
4500 lurb->host_urb.buffer_length);
4501 lurb->target_buf_ptr = NULL;
4502
4503 /* restore the guest buffer pointer */
4504 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
4505
4506 /* update the guest urb struct */
4507 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
4508 if (!argptr) {
4509 g_free(lurb);
4510 return -TARGET_EFAULT;
4511 }
4512 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
4513 unlock_user(argptr, lurb->target_urb_adr, target_size);
4514
4515 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
4516 /* write back the urb handle */
4517 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4518 if (!argptr) {
4519 g_free(lurb);
4520 return -TARGET_EFAULT;
4521 }
4522
4523 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
4524 target_urb_adr = lurb->target_urb_adr;
4525 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
4526 unlock_user(argptr, arg, target_size);
4527
4528 g_free(lurb);
4529 return ret;
4530 }
4531
4532 static abi_long
4533 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
4534 uint8_t *buf_temp __attribute__((unused)),
4535 int fd, int cmd, abi_long arg)
4536 {
4537 struct live_urb *lurb;
4538
4539 /* map target address back to host URB with metadata. */
4540 lurb = urb_hashtable_lookup(arg);
4541 if (!lurb) {
4542 return -TARGET_EFAULT;
4543 }
4544 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4545 }
4546
4547 static abi_long
4548 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
4549 int fd, int cmd, abi_long arg)
4550 {
4551 const argtype *arg_type = ie->arg_type;
4552 int target_size;
4553 abi_long ret;
4554 void *argptr;
4555 int rw_dir;
4556 struct live_urb *lurb;
4557
4558 /*
4559 * each submitted URB needs to map to a unique ID for the
4560 * kernel, and that unique ID needs to be a pointer to
4561 * host memory. hence, we need to malloc for each URB.
4562 * isochronous transfers have a variable length struct.
4563 */
4564 arg_type++;
4565 target_size = thunk_type_size(arg_type, THUNK_TARGET);
4566
4567 /* construct host copy of urb and metadata */
4568 lurb = g_try_malloc0(sizeof(struct live_urb));
4569 if (!lurb) {
4570 return -TARGET_ENOMEM;
4571 }
4572
4573 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4574 if (!argptr) {
4575 g_free(lurb);
4576 return -TARGET_EFAULT;
4577 }
4578 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
4579 unlock_user(argptr, arg, 0);
4580
4581 lurb->target_urb_adr = arg;
4582 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
4583
4584 /* buffer space used depends on endpoint type so lock the entire buffer */
4585 /* control type urbs should check the buffer contents for true direction */
4586 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
4587 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
4588 lurb->host_urb.buffer_length, 1);
4589 if (lurb->target_buf_ptr == NULL) {
4590 g_free(lurb);
4591 return -TARGET_EFAULT;
4592 }
4593
4594 /* update buffer pointer in host copy */
4595 lurb->host_urb.buffer = lurb->target_buf_ptr;
4596
4597 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4598 if (is_error(ret)) {
4599 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
4600 g_free(lurb);
4601 } else {
4602 urb_hashtable_insert(lurb);
4603 }
4604
4605 return ret;
4606 }
4607 #endif /* CONFIG_USBFS */
4608
4609 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4610 int cmd, abi_long arg)
4611 {
4612 void *argptr;
4613 struct dm_ioctl *host_dm;
4614 abi_long guest_data;
4615 uint32_t guest_data_size;
4616 int target_size;
4617 const argtype *arg_type = ie->arg_type;
4618 abi_long ret;
4619 void *big_buf = NULL;
4620 char *host_data;
4621
4622 arg_type++;
4623 target_size = thunk_type_size(arg_type, 0);
4624 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4625 if (!argptr) {
4626 ret = -TARGET_EFAULT;
4627 goto out;
4628 }
4629 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4630 unlock_user(argptr, arg, 0);
4631
4632 /* buf_temp is too small, so fetch things into a bigger buffer */
4633 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
4634 memcpy(big_buf, buf_temp, target_size);
4635 buf_temp = big_buf;
4636 host_dm = big_buf;
4637
4638 guest_data = arg + host_dm->data_start;
4639 if ((guest_data - arg) < 0) {
4640 ret = -TARGET_EINVAL;
4641 goto out;
4642 }
4643 guest_data_size = host_dm->data_size - host_dm->data_start;
4644 host_data = (char*)host_dm + host_dm->data_start;
4645
4646 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
4647 if (!argptr) {
4648 ret = -TARGET_EFAULT;
4649 goto out;
4650 }
4651
4652 switch (ie->host_cmd) {
4653 case DM_REMOVE_ALL:
4654 case DM_LIST_DEVICES:
4655 case DM_DEV_CREATE:
4656 case DM_DEV_REMOVE:
4657 case DM_DEV_SUSPEND:
4658 case DM_DEV_STATUS:
4659 case DM_DEV_WAIT:
4660 case DM_TABLE_STATUS:
4661 case DM_TABLE_CLEAR:
4662 case DM_TABLE_DEPS:
4663 case DM_LIST_VERSIONS:
4664 /* no input data */
4665 break;
4666 case DM_DEV_RENAME:
4667 case DM_DEV_SET_GEOMETRY:
4668 /* data contains only strings */
4669 memcpy(host_data, argptr, guest_data_size);
4670 break;
4671 case DM_TARGET_MSG:
4672 memcpy(host_data, argptr, guest_data_size);
4673 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
4674 break;
4675 case DM_TABLE_LOAD:
4676 {
4677 void *gspec = argptr;
4678 void *cur_data = host_data;
4679 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
4680 int spec_size = thunk_type_size(arg_type, 0);
4681 int i;
4682
4683 for (i = 0; i < host_dm->target_count; i++) {
4684 struct dm_target_spec *spec = cur_data;
4685 uint32_t next;
4686 int slen;
4687
4688 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
4689 slen = strlen((char*)gspec + spec_size) + 1;
4690 next = spec->next;
4691 spec->next = sizeof(*spec) + slen;
4692 strcpy((char*)&spec[1], gspec + spec_size);
4693 gspec += next;
4694 cur_data += spec->next;
4695 }
4696 break;
4697 }
4698 default:
4699 ret = -TARGET_EINVAL;
4700 unlock_user(argptr, guest_data, 0);
4701 goto out;
4702 }
4703 unlock_user(argptr, guest_data, 0);
4704
4705 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4706 if (!is_error(ret)) {
4707 guest_data = arg + host_dm->data_start;
4708 guest_data_size = host_dm->data_size - host_dm->data_start;
4709 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
4710 switch (ie->host_cmd) {
4711 case DM_REMOVE_ALL:
4712 case DM_DEV_CREATE:
4713 case DM_DEV_REMOVE:
4714 case DM_DEV_RENAME:
4715 case DM_DEV_SUSPEND:
4716 case DM_DEV_STATUS:
4717 case DM_TABLE_LOAD:
4718 case DM_TABLE_CLEAR:
4719 case DM_TARGET_MSG:
4720 case DM_DEV_SET_GEOMETRY:
4721 /* no return data */
4722 break;
4723 case DM_LIST_DEVICES:
4724 {
4725 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
4726 uint32_t remaining_data = guest_data_size;
4727 void *cur_data = argptr;
4728 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
4729 int nl_size = 12; /* can't use thunk_size due to alignment */
4730
4731 while (1) {
4732 uint32_t next = nl->next;
4733 if (next) {
4734 nl->next = nl_size + (strlen(nl->name) + 1);
4735 }
4736 if (remaining_data < nl->next) {
4737 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4738 break;
4739 }
4740 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
4741 strcpy(cur_data + nl_size, nl->name);
4742 cur_data += nl->next;
4743 remaining_data -= nl->next;
4744 if (!next) {
4745 break;
4746 }
4747 nl = (void*)nl + next;
4748 }
4749 break;
4750 }
4751 case DM_DEV_WAIT:
4752 case DM_TABLE_STATUS:
4753 {
4754 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
4755 void *cur_data = argptr;
4756 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
4757 int spec_size = thunk_type_size(arg_type, 0);
4758 int i;
4759
4760 for (i = 0; i < host_dm->target_count; i++) {
4761 uint32_t next = spec->next;
4762 int slen = strlen((char*)&spec[1]) + 1;
4763 spec->next = (cur_data - argptr) + spec_size + slen;
4764 if (guest_data_size < spec->next) {
4765 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4766 break;
4767 }
4768 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
4769 strcpy(cur_data + spec_size, (char*)&spec[1]);
4770 cur_data = argptr + spec->next;
4771 spec = (void*)host_dm + host_dm->data_start + next;
4772 }
4773 break;
4774 }
4775 case DM_TABLE_DEPS:
4776 {
4777 void *hdata = (void*)host_dm + host_dm->data_start;
4778 int count = *(uint32_t*)hdata;
4779 uint64_t *hdev = hdata + 8;
4780 uint64_t *gdev = argptr + 8;
4781 int i;
4782
4783 *(uint32_t*)argptr = tswap32(count);
4784 for (i = 0; i < count; i++) {
4785 *gdev = tswap64(*hdev);
4786 gdev++;
4787 hdev++;
4788 }
4789 break;
4790 }
4791 case DM_LIST_VERSIONS:
4792 {
4793 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
4794 uint32_t remaining_data = guest_data_size;
4795 void *cur_data = argptr;
4796 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
4797 int vers_size = thunk_type_size(arg_type, 0);
4798
4799 while (1) {
4800 uint32_t next = vers->next;
4801 if (next) {
4802 vers->next = vers_size + (strlen(vers->name) + 1);
4803 }
4804 if (remaining_data < vers->next) {
4805 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4806 break;
4807 }
4808 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
4809 strcpy(cur_data + vers_size, vers->name);
4810 cur_data += vers->next;
4811 remaining_data -= vers->next;
4812 if (!next) {
4813 break;
4814 }
4815 vers = (void*)vers + next;
4816 }
4817 break;
4818 }
4819 default:
4820 unlock_user(argptr, guest_data, 0);
4821 ret = -TARGET_EINVAL;
4822 goto out;
4823 }
4824 unlock_user(argptr, guest_data, guest_data_size);
4825
4826 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4827 if (!argptr) {
4828 ret = -TARGET_EFAULT;
4829 goto out;
4830 }
4831 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
4832 unlock_user(argptr, arg, target_size);
4833 }
4834 out:
4835 g_free(big_buf);
4836 return ret;
4837 }
4838
4839 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4840 int cmd, abi_long arg)
4841 {
4842 void *argptr;
4843 int target_size;
4844 const argtype *arg_type = ie->arg_type;
4845 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
4846 abi_long ret;
4847
4848 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
4849 struct blkpg_partition host_part;
4850
4851 /* Read and convert blkpg */
4852 arg_type++;
4853 target_size = thunk_type_size(arg_type, 0);
4854 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4855 if (!argptr) {
4856 ret = -TARGET_EFAULT;
4857 goto out;
4858 }
4859 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4860 unlock_user(argptr, arg, 0);
4861
4862 switch (host_blkpg->op) {
4863 case BLKPG_ADD_PARTITION:
4864 case BLKPG_DEL_PARTITION:
4865 /* payload is struct blkpg_partition */
4866 break;
4867 default:
4868 /* Unknown opcode */
4869 ret = -TARGET_EINVAL;
4870 goto out;
4871 }
4872
4873 /* Read and convert blkpg->data */
4874 arg = (abi_long)(uintptr_t)host_blkpg->data;
4875 target_size = thunk_type_size(part_arg_type, 0);
4876 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4877 if (!argptr) {
4878 ret = -TARGET_EFAULT;
4879 goto out;
4880 }
4881 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
4882 unlock_user(argptr, arg, 0);
4883
4884 /* Swizzle the data pointer to our local copy and call! */
4885 host_blkpg->data = &host_part;
4886 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
4887
4888 out:
4889 return ret;
4890 }
4891
4892 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
4893 int fd, int cmd, abi_long arg)
4894 {
4895 const argtype *arg_type = ie->arg_type;
4896 const StructEntry *se;
4897 const argtype *field_types;
4898 const int *dst_offsets, *src_offsets;
4899 int target_size;
4900 void *argptr;
4901 abi_ulong *target_rt_dev_ptr = NULL;
4902 unsigned long *host_rt_dev_ptr = NULL;
4903 abi_long ret;
4904 int i;
4905
4906 assert(ie->access == IOC_W);
4907 assert(*arg_type == TYPE_PTR);
4908 arg_type++;
4909 assert(*arg_type == TYPE_STRUCT);
4910 target_size = thunk_type_size(arg_type, 0);
4911 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4912 if (!argptr) {
4913 return -TARGET_EFAULT;
4914 }
4915 arg_type++;
4916 assert(*arg_type == (int)STRUCT_rtentry);
4917 se = struct_entries + *arg_type++;
4918 assert(se->convert[0] == NULL);
4919 /* convert struct here to be able to catch rt_dev string */
4920 field_types = se->field_types;
4921 dst_offsets = se->field_offsets[THUNK_HOST];
4922 src_offsets = se->field_offsets[THUNK_TARGET];
4923 for (i = 0; i < se->nb_fields; i++) {
4924 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
4925 assert(*field_types == TYPE_PTRVOID);
4926 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
4927 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
4928 if (*target_rt_dev_ptr != 0) {
4929 *host_rt_dev_ptr = (unsigned long)lock_user_string(
4930 tswapal(*target_rt_dev_ptr));
4931 if (!*host_rt_dev_ptr) {
4932 unlock_user(argptr, arg, 0);
4933 return -TARGET_EFAULT;
4934 }
4935 } else {
4936 *host_rt_dev_ptr = 0;
4937 }
4938 field_types++;
4939 continue;
4940 }
4941 field_types = thunk_convert(buf_temp + dst_offsets[i],
4942 argptr + src_offsets[i],
4943 field_types, THUNK_HOST);
4944 }
4945 unlock_user(argptr, arg, 0);
4946
4947 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4948
4949 assert(host_rt_dev_ptr != NULL);
4950 assert(target_rt_dev_ptr != NULL);
4951 if (*host_rt_dev_ptr != 0) {
4952 unlock_user((void *)*host_rt_dev_ptr,
4953 *target_rt_dev_ptr, 0);
4954 }
4955 return ret;
4956 }
4957
4958 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
4959 int fd, int cmd, abi_long arg)
4960 {
4961 int sig = target_to_host_signal(arg);
4962 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
4963 }
4964
4965 static abi_long do_ioctl_SIOCGSTAMP(const IOCTLEntry *ie, uint8_t *buf_temp,
4966 int fd, int cmd, abi_long arg)
4967 {
4968 struct timeval tv;
4969 abi_long ret;
4970
4971 ret = get_errno(safe_ioctl(fd, SIOCGSTAMP, &tv));
4972 if (is_error(ret)) {
4973 return ret;
4974 }
4975
4976 if (cmd == (int)TARGET_SIOCGSTAMP_OLD) {
4977 if (copy_to_user_timeval(arg, &tv)) {
4978 return -TARGET_EFAULT;
4979 }
4980 } else {
4981 if (copy_to_user_timeval64(arg, &tv)) {
4982 return -TARGET_EFAULT;
4983 }
4984 }
4985
4986 return ret;
4987 }
4988
4989 static abi_long do_ioctl_SIOCGSTAMPNS(const IOCTLEntry *ie, uint8_t *buf_temp,
4990 int fd, int cmd, abi_long arg)
4991 {
4992 struct timespec ts;
4993 abi_long ret;
4994
4995 ret = get_errno(safe_ioctl(fd, SIOCGSTAMPNS, &ts));
4996 if (is_error(ret)) {
4997 return ret;
4998 }
4999
5000 if (cmd == (int)TARGET_SIOCGSTAMPNS_OLD) {
5001 if (host_to_target_timespec(arg, &ts)) {
5002 return -TARGET_EFAULT;
5003 }
5004 } else{
5005 if (host_to_target_timespec64(arg, &ts)) {
5006 return -TARGET_EFAULT;
5007 }
5008 }
5009
5010 return ret;
5011 }
5012
5013 #ifdef TIOCGPTPEER
5014 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
5015 int fd, int cmd, abi_long arg)
5016 {
5017 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
5018 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
5019 }
5020 #endif
5021
5022 static IOCTLEntry ioctl_entries[] = {
5023 #define IOCTL(cmd, access, ...) \
5024 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
5025 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
5026 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
5027 #define IOCTL_IGNORE(cmd) \
5028 { TARGET_ ## cmd, 0, #cmd },
5029 #include "ioctls.h"
5030 { 0, 0, },
5031 };
5032
5033 /* ??? Implement proper locking for ioctls. */
5034 /* do_ioctl() Must return target values and target errnos. */
5035 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
5036 {
5037 const IOCTLEntry *ie;
5038 const argtype *arg_type;
5039 abi_long ret;
5040 uint8_t buf_temp[MAX_STRUCT_SIZE];
5041 int target_size;
5042 void *argptr;
5043
5044 ie = ioctl_entries;
5045 for(;;) {
5046 if (ie->target_cmd == 0) {
5047 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
5048 return -TARGET_ENOSYS;
5049 }
5050 if (ie->target_cmd == cmd)
5051 break;
5052 ie++;
5053 }
5054 arg_type = ie->arg_type;
5055 if (ie->do_ioctl) {
5056 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
5057 } else if (!ie->host_cmd) {
5058 /* Some architectures define BSD ioctls in their headers
5059 that are not implemented in Linux. */
5060 return -TARGET_ENOSYS;
5061 }
5062
5063 switch(arg_type[0]) {
5064 case TYPE_NULL:
5065 /* no argument */
5066 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
5067 break;
5068 case TYPE_PTRVOID:
5069 case TYPE_INT:
5070 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
5071 break;
5072 case TYPE_PTR:
5073 arg_type++;
5074 target_size = thunk_type_size(arg_type, 0);
5075 switch(ie->access) {
5076 case IOC_R:
5077 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5078 if (!is_error(ret)) {
5079 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5080 if (!argptr)
5081 return -TARGET_EFAULT;
5082 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5083 unlock_user(argptr, arg, target_size);
5084 }
5085 break;
5086 case IOC_W:
5087 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5088 if (!argptr)
5089 return -TARGET_EFAULT;
5090 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5091 unlock_user(argptr, arg, 0);
5092 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5093 break;
5094 default:
5095 case IOC_RW:
5096 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
5097 if (!argptr)
5098 return -TARGET_EFAULT;
5099 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
5100 unlock_user(argptr, arg, 0);
5101 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
5102 if (!is_error(ret)) {
5103 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
5104 if (!argptr)
5105 return -TARGET_EFAULT;
5106 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
5107 unlock_user(argptr, arg, target_size);
5108 }
5109 break;
5110 }
5111 break;
5112 default:
5113 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n",
5114 (long)cmd, arg_type[0]);
5115 ret = -TARGET_ENOSYS;
5116 break;
5117 }
5118 return ret;
5119 }
5120
5121 static const bitmask_transtbl iflag_tbl[] = {
5122 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
5123 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
5124 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
5125 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
5126 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
5127 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
5128 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
5129 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
5130 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
5131 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
5132 { TARGET_IXON, TARGET_IXON, IXON, IXON },
5133 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
5134 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
5135 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
5136 { 0, 0, 0, 0 }
5137 };
5138
5139 static const bitmask_transtbl oflag_tbl[] = {
5140 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
5141 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
5142 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
5143 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
5144 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
5145 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
5146 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
5147 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
5148 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
5149 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
5150 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
5151 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
5152 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
5153 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
5154 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
5155 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
5156 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
5157 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
5158 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
5159 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
5160 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
5161 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
5162 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
5163 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
5164 { 0, 0, 0, 0 }
5165 };
5166
5167 static const bitmask_transtbl cflag_tbl[] = {
5168 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
5169 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
5170 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
5171 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
5172 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
5173 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
5174 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
5175 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
5176 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
5177 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
5178 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5179 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5180 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5181 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5182 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5183 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5184 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5185 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5186 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5187 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5188 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5189 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5190 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5191 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5192 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5193 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5194 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5195 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5196 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5197 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5198 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5199 { 0, 0, 0, 0 }
5200 };
5201
5202 static const bitmask_transtbl lflag_tbl[] = {
5203 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5204 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5205 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5206 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5207 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5208 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5209 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5210 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5211 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5212 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5213 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5214 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5215 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5216 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5217 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5218 { 0, 0, 0, 0 }
5219 };
5220
5221 static void target_to_host_termios (void *dst, const void *src)
5222 {
5223 struct host_termios *host = dst;
5224 const struct target_termios *target = src;
5225
5226 host->c_iflag =
5227 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5228 host->c_oflag =
5229 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5230 host->c_cflag =
5231 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5232 host->c_lflag =
5233 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5234 host->c_line = target->c_line;
5235
5236 memset(host->c_cc, 0, sizeof(host->c_cc));
5237 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5238 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5239 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5240 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5241 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5242 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5243 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5244 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5245 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5246 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5247 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5248 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5249 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5250 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5251 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5252 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5253 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5254 }
5255
5256 static void host_to_target_termios (void *dst, const void *src)
5257 {
5258 struct target_termios *target = dst;
5259 const struct host_termios *host = src;
5260
5261 target->c_iflag =
5262 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5263 target->c_oflag =
5264 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5265 target->c_cflag =
5266 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5267 target->c_lflag =
5268 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5269 target->c_line = host->c_line;
5270
5271 memset(target->c_cc, 0, sizeof(target->c_cc));
5272 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5273 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5274 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5275 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5276 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5277 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5278 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5279 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5280 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5281 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5282 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5283 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5284 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5285 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5286 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5287 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5288 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5289 }
5290
5291 static const StructEntry struct_termios_def = {
5292 .convert = { host_to_target_termios, target_to_host_termios },
5293 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5294 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5295 };
5296
5297 static bitmask_transtbl mmap_flags_tbl[] = {
5298 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5299 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5300 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5301 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5302 MAP_ANONYMOUS, MAP_ANONYMOUS },
5303 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5304 MAP_GROWSDOWN, MAP_GROWSDOWN },
5305 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5306 MAP_DENYWRITE, MAP_DENYWRITE },
5307 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5308 MAP_EXECUTABLE, MAP_EXECUTABLE },
5309 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5310 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
5311 MAP_NORESERVE, MAP_NORESERVE },
5312 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
5313 /* MAP_STACK had been ignored by the kernel for quite some time.
5314 Recognize it for the target insofar as we do not want to pass
5315 it through to the host. */
5316 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
5317 { 0, 0, 0, 0 }
5318 };
5319
5320 #if defined(TARGET_I386)
5321
5322 /* NOTE: there is really one LDT for all the threads */
5323 static uint8_t *ldt_table;
5324
5325 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5326 {
5327 int size;
5328 void *p;
5329
5330 if (!ldt_table)
5331 return 0;
5332 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5333 if (size > bytecount)
5334 size = bytecount;
5335 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5336 if (!p)
5337 return -TARGET_EFAULT;
5338 /* ??? Should this by byteswapped? */
5339 memcpy(p, ldt_table, size);
5340 unlock_user(p, ptr, size);
5341 return size;
5342 }
5343
5344 /* XXX: add locking support */
5345 static abi_long write_ldt(CPUX86State *env,
5346 abi_ulong ptr, unsigned long bytecount, int oldmode)
5347 {
5348 struct target_modify_ldt_ldt_s ldt_info;
5349 struct target_modify_ldt_ldt_s *target_ldt_info;
5350 int seg_32bit, contents, read_exec_only, limit_in_pages;
5351 int seg_not_present, useable, lm;
5352 uint32_t *lp, entry_1, entry_2;
5353
5354 if (bytecount != sizeof(ldt_info))
5355 return -TARGET_EINVAL;
5356 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5357 return -TARGET_EFAULT;
5358 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5359 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5360 ldt_info.limit = tswap32(target_ldt_info->limit);
5361 ldt_info.flags = tswap32(target_ldt_info->flags);
5362 unlock_user_struct(target_ldt_info, ptr, 0);
5363
5364 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5365 return -TARGET_EINVAL;
5366 seg_32bit = ldt_info.flags & 1;
5367 contents = (ldt_info.flags >> 1) & 3;
5368 read_exec_only = (ldt_info.flags >> 3) & 1;
5369 limit_in_pages = (ldt_info.flags >> 4) & 1;
5370 seg_not_present = (ldt_info.flags >> 5) & 1;
5371 useable = (ldt_info.flags >> 6) & 1;
5372 #ifdef TARGET_ABI32
5373 lm = 0;
5374 #else
5375 lm = (ldt_info.flags >> 7) & 1;
5376 #endif
5377 if (contents == 3) {
5378 if (oldmode)
5379 return -TARGET_EINVAL;
5380 if (seg_not_present == 0)
5381 return -TARGET_EINVAL;
5382 }
5383 /* allocate the LDT */
5384 if (!ldt_table) {
5385 env->ldt.base = target_mmap(0,
5386 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
5387 PROT_READ|PROT_WRITE,
5388 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
5389 if (env->ldt.base == -1)
5390 return -TARGET_ENOMEM;
5391 memset(g2h(env->ldt.base), 0,
5392 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
5393 env->ldt.limit = 0xffff;
5394 ldt_table = g2h(env->ldt.base);
5395 }
5396
5397 /* NOTE: same code as Linux kernel */
5398 /* Allow LDTs to be cleared by the user. */
5399 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5400 if (oldmode ||
5401 (contents == 0 &&
5402 read_exec_only == 1 &&
5403 seg_32bit == 0 &&
5404 limit_in_pages == 0 &&
5405 seg_not_present == 1 &&
5406 useable == 0 )) {
5407 entry_1 = 0;
5408 entry_2 = 0;
5409 goto install;
5410 }
5411 }
5412
5413 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5414 (ldt_info.limit & 0x0ffff);
5415 entry_2 = (ldt_info.base_addr & 0xff000000) |
5416 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5417 (ldt_info.limit & 0xf0000) |
5418 ((read_exec_only ^ 1) << 9) |
5419 (contents << 10) |
5420 ((seg_not_present ^ 1) << 15) |
5421 (seg_32bit << 22) |
5422 (limit_in_pages << 23) |
5423 (lm << 21) |
5424 0x7000;
5425 if (!oldmode)
5426 entry_2 |= (useable << 20);
5427
5428 /* Install the new entry ... */
5429 install:
5430 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
5431 lp[0] = tswap32(entry_1);
5432 lp[1] = tswap32(entry_2);
5433 return 0;
5434 }
5435
5436 /* specific and weird i386 syscalls */
5437 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
5438 unsigned long bytecount)
5439 {
5440 abi_long ret;
5441
5442 switch (func) {
5443 case 0:
5444 ret = read_ldt(ptr, bytecount);
5445 break;
5446 case 1:
5447 ret = write_ldt(env, ptr, bytecount, 1);
5448 break;
5449 case 0x11:
5450 ret = write_ldt(env, ptr, bytecount, 0);
5451 break;
5452 default:
5453 ret = -TARGET_ENOSYS;
5454 break;
5455 }
5456 return ret;
5457 }
5458
5459 #if defined(TARGET_I386) && defined(TARGET_ABI32)
5460 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
5461 {
5462 uint64_t *gdt_table = g2h(env->gdt.base);
5463 struct target_modify_ldt_ldt_s ldt_info;
5464 struct target_modify_ldt_ldt_s *target_ldt_info;
5465 int seg_32bit, contents, read_exec_only, limit_in_pages;
5466 int seg_not_present, useable, lm;
5467 uint32_t *lp, entry_1, entry_2;
5468 int i;
5469
5470 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5471 if (!target_ldt_info)
5472 return -TARGET_EFAULT;
5473 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5474 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5475 ldt_info.limit = tswap32(target_ldt_info->limit);
5476 ldt_info.flags = tswap32(target_ldt_info->flags);
5477 if (ldt_info.entry_number == -1) {
5478 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
5479 if (gdt_table[i] == 0) {
5480 ldt_info.entry_number = i;
5481 target_ldt_info->entry_number = tswap32(i);
5482 break;
5483 }
5484 }
5485 }
5486 unlock_user_struct(target_ldt_info, ptr, 1);
5487
5488 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
5489 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
5490 return -TARGET_EINVAL;
5491 seg_32bit = ldt_info.flags & 1;
5492 contents = (ldt_info.flags >> 1) & 3;
5493 read_exec_only = (ldt_info.flags >> 3) & 1;
5494 limit_in_pages = (ldt_info.flags >> 4) & 1;
5495 seg_not_present = (ldt_info.flags >> 5) & 1;
5496 useable = (ldt_info.flags >> 6) & 1;
5497 #ifdef TARGET_ABI32
5498 lm = 0;
5499 #else
5500 lm = (ldt_info.flags >> 7) & 1;
5501 #endif
5502
5503 if (contents == 3) {
5504 if (seg_not_present == 0)
5505 return -TARGET_EINVAL;
5506 }
5507
5508 /* NOTE: same code as Linux kernel */
5509 /* Allow LDTs to be cleared by the user. */
5510 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5511 if ((contents == 0 &&
5512 read_exec_only == 1 &&
5513 seg_32bit == 0 &&
5514 limit_in_pages == 0 &&
5515 seg_not_present == 1 &&
5516 useable == 0 )) {
5517 entry_1 = 0;
5518 entry_2 = 0;
5519 goto install;
5520 }
5521 }
5522
5523 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5524 (ldt_info.limit & 0x0ffff);
5525 entry_2 = (ldt_info.base_addr & 0xff000000) |
5526 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5527 (ldt_info.limit & 0xf0000) |
5528 ((read_exec_only ^ 1) << 9) |
5529 (contents << 10) |
5530 ((seg_not_present ^ 1) << 15) |
5531 (seg_32bit << 22) |
5532 (limit_in_pages << 23) |
5533 (useable << 20) |
5534 (lm << 21) |
5535 0x7000;
5536
5537 /* Install the new entry ... */
5538 install:
5539 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
5540 lp[0] = tswap32(entry_1);
5541 lp[1] = tswap32(entry_2);
5542 return 0;
5543 }
5544
5545 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
5546 {
5547 struct target_modify_ldt_ldt_s *target_ldt_info;
5548 uint64_t *gdt_table = g2h(env->gdt.base);
5549 uint32_t base_addr, limit, flags;
5550 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
5551 int seg_not_present, useable, lm;
5552 uint32_t *lp, entry_1, entry_2;
5553
5554 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5555 if (!target_ldt_info)
5556 return -TARGET_EFAULT;
5557 idx = tswap32(target_ldt_info->entry_number);
5558 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
5559 idx > TARGET_GDT_ENTRY_TLS_MAX) {
5560 unlock_user_struct(target_ldt_info, ptr, 1);
5561 return -TARGET_EINVAL;
5562 }
5563 lp = (uint32_t *)(gdt_table + idx);
5564 entry_1 = tswap32(lp[0]);
5565 entry_2 = tswap32(lp[1]);
5566
5567 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
5568 contents = (entry_2 >> 10) & 3;
5569 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
5570 seg_32bit = (entry_2 >> 22) & 1;
5571 limit_in_pages = (entry_2 >> 23) & 1;
5572 useable = (entry_2 >> 20) & 1;
5573 #ifdef TARGET_ABI32
5574 lm = 0;
5575 #else
5576 lm = (entry_2 >> 21) & 1;
5577 #endif
5578 flags = (seg_32bit << 0) | (contents << 1) |
5579 (read_exec_only << 3) | (limit_in_pages << 4) |
5580 (seg_not_present << 5) | (useable << 6) | (lm << 7);
5581 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
5582 base_addr = (entry_1 >> 16) |
5583 (entry_2 & 0xff000000) |
5584 ((entry_2 & 0xff) << 16);
5585 target_ldt_info->base_addr = tswapal(base_addr);
5586 target_ldt_info->limit = tswap32(limit);
5587 target_ldt_info->flags = tswap32(flags);
5588 unlock_user_struct(target_ldt_info, ptr, 1);
5589 return 0;
5590 }
5591 #endif /* TARGET_I386 && TARGET_ABI32 */
5592
5593 #ifndef TARGET_ABI32
5594 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
5595 {
5596 abi_long ret = 0;
5597 abi_ulong val;
5598 int idx;
5599
5600 switch(code) {
5601 case TARGET_ARCH_SET_GS:
5602 case TARGET_ARCH_SET_FS:
5603 if (code == TARGET_ARCH_SET_GS)
5604 idx = R_GS;
5605 else
5606 idx = R_FS;
5607 cpu_x86_load_seg(env, idx, 0);
5608 env->segs[idx].base = addr;
5609 break;
5610 case TARGET_ARCH_GET_GS:
5611 case TARGET_ARCH_GET_FS:
5612 if (code == TARGET_ARCH_GET_GS)
5613 idx = R_GS;
5614 else
5615 idx = R_FS;
5616 val = env->segs[idx].base;
5617 if (put_user(val, addr, abi_ulong))
5618 ret = -TARGET_EFAULT;
5619 break;
5620 default:
5621 ret = -TARGET_EINVAL;
5622 break;
5623 }
5624 return ret;
5625 }
5626 #endif
5627
5628 #endif /* defined(TARGET_I386) */
5629
5630 #define NEW_STACK_SIZE 0x40000
5631
5632
5633 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
5634 typedef struct {
5635 CPUArchState *env;
5636 pthread_mutex_t mutex;
5637 pthread_cond_t cond;
5638 pthread_t thread;
5639 uint32_t tid;
5640 abi_ulong child_tidptr;
5641 abi_ulong parent_tidptr;
5642 sigset_t sigmask;
5643 } new_thread_info;
5644
5645 static void *clone_func(void *arg)
5646 {
5647 new_thread_info *info = arg;
5648 CPUArchState *env;
5649 CPUState *cpu;
5650 TaskState *ts;
5651
5652 rcu_register_thread();
5653 tcg_register_thread();
5654 env = info->env;
5655 cpu = env_cpu(env);
5656 thread_cpu = cpu;
5657 ts = (TaskState *)cpu->opaque;
5658 info->tid = sys_gettid();
5659 task_settid(ts);
5660 if (info->child_tidptr)
5661 put_user_u32(info->tid, info->child_tidptr);
5662 if (info->parent_tidptr)
5663 put_user_u32(info->tid, info->parent_tidptr);
5664 qemu_guest_random_seed_thread_part2(cpu->random_seed);
5665 /* Enable signals. */
5666 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
5667 /* Signal to the parent that we're ready. */
5668 pthread_mutex_lock(&info->mutex);
5669 pthread_cond_broadcast(&info->cond);
5670 pthread_mutex_unlock(&info->mutex);
5671 /* Wait until the parent has finished initializing the tls state. */
5672 pthread_mutex_lock(&clone_lock);
5673 pthread_mutex_unlock(&clone_lock);
5674 cpu_loop(env);
5675 /* never exits */
5676 return NULL;
5677 }
5678
5679 /* do_fork() Must return host values and target errnos (unlike most
5680 do_*() functions). */
5681 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
5682 abi_ulong parent_tidptr, target_ulong newtls,
5683 abi_ulong child_tidptr)
5684 {
5685 CPUState *cpu = env_cpu(env);
5686 int ret;
5687 TaskState *ts;
5688 CPUState *new_cpu;
5689 CPUArchState *new_env;
5690 sigset_t sigmask;
5691
5692 flags &= ~CLONE_IGNORED_FLAGS;
5693
5694 /* Emulate vfork() with fork() */
5695 if (flags & CLONE_VFORK)
5696 flags &= ~(CLONE_VFORK | CLONE_VM);
5697
5698 if (flags & CLONE_VM) {
5699 TaskState *parent_ts = (TaskState *)cpu->opaque;
5700 new_thread_info info;
5701 pthread_attr_t attr;
5702
5703 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
5704 (flags & CLONE_INVALID_THREAD_FLAGS)) {
5705 return -TARGET_EINVAL;
5706 }
5707
5708 ts = g_new0(TaskState, 1);
5709 init_task_state(ts);
5710
5711 /* Grab a mutex so that thread setup appears atomic. */
5712 pthread_mutex_lock(&clone_lock);
5713
5714 /* we create a new CPU instance. */
5715 new_env = cpu_copy(env);
5716 /* Init regs that differ from the parent. */
5717 cpu_clone_regs(new_env, newsp);
5718 new_cpu = env_cpu(new_env);
5719 new_cpu->opaque = ts;
5720 ts->bprm = parent_ts->bprm;
5721 ts->info = parent_ts->info;
5722 ts->signal_mask = parent_ts->signal_mask;
5723
5724 if (flags & CLONE_CHILD_CLEARTID) {
5725 ts->child_tidptr = child_tidptr;
5726 }
5727
5728 if (flags & CLONE_SETTLS) {
5729 cpu_set_tls (new_env, newtls);
5730 }
5731
5732 memset(&info, 0, sizeof(info));
5733 pthread_mutex_init(&info.mutex, NULL);
5734 pthread_mutex_lock(&info.mutex);
5735 pthread_cond_init(&info.cond, NULL);
5736 info.env = new_env;
5737 if (flags & CLONE_CHILD_SETTID) {
5738 info.child_tidptr = child_tidptr;
5739 }
5740 if (flags & CLONE_PARENT_SETTID) {
5741 info.parent_tidptr = parent_tidptr;
5742 }
5743
5744 ret = pthread_attr_init(&attr);
5745 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
5746 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
5747 /* It is not safe to deliver signals until the child has finished
5748 initializing, so temporarily block all signals. */
5749 sigfillset(&sigmask);
5750 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
5751 cpu->random_seed = qemu_guest_random_seed_thread_part1();
5752
5753 /* If this is our first additional thread, we need to ensure we
5754 * generate code for parallel execution and flush old translations.
5755 */
5756 if (!parallel_cpus) {
5757 parallel_cpus = true;
5758 tb_flush(cpu);
5759 }
5760
5761 ret = pthread_create(&info.thread, &attr, clone_func, &info);
5762 /* TODO: Free new CPU state if thread creation failed. */
5763
5764 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
5765 pthread_attr_destroy(&attr);
5766 if (ret == 0) {
5767 /* Wait for the child to initialize. */
5768 pthread_cond_wait(&info.cond, &info.mutex);
5769 ret = info.tid;
5770 } else {
5771 ret = -1;
5772 }
5773 pthread_mutex_unlock(&info.mutex);
5774 pthread_cond_destroy(&info.cond);
5775 pthread_mutex_destroy(&info.mutex);
5776 pthread_mutex_unlock(&clone_lock);
5777 } else {
5778 /* if no CLONE_VM, we consider it is a fork */
5779 if (flags & CLONE_INVALID_FORK_FLAGS) {
5780 return -TARGET_EINVAL;
5781 }
5782
5783 /* We can't support custom termination signals */
5784 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
5785 return -TARGET_EINVAL;
5786 }
5787
5788 if (block_signals()) {
5789 return -TARGET_ERESTARTSYS;
5790 }
5791
5792 fork_start();
5793 ret = fork();
5794 if (ret == 0) {
5795 /* Child Process. */
5796 cpu_clone_regs(env, newsp);
5797 fork_end(1);
5798 /* There is a race condition here. The parent process could
5799 theoretically read the TID in the child process before the child
5800 tid is set. This would require using either ptrace
5801 (not implemented) or having *_tidptr to point at a shared memory
5802 mapping. We can't repeat the spinlock hack used above because
5803 the child process gets its own copy of the lock. */
5804 if (flags & CLONE_CHILD_SETTID)
5805 put_user_u32(sys_gettid(), child_tidptr);
5806 if (flags & CLONE_PARENT_SETTID)
5807 put_user_u32(sys_gettid(), parent_tidptr);
5808 ts = (TaskState *)cpu->opaque;
5809 if (flags & CLONE_SETTLS)
5810 cpu_set_tls (env, newtls);
5811 if (flags & CLONE_CHILD_CLEARTID)
5812 ts->child_tidptr = child_tidptr;
5813 } else {
5814 fork_end(0);
5815 }
5816 }
5817 return ret;
5818 }
5819
5820 /* warning : doesn't handle linux specific flags... */
5821 static int target_to_host_fcntl_cmd(int cmd)
5822 {
5823 int ret;
5824
5825 switch(cmd) {
5826 case TARGET_F_DUPFD:
5827 case TARGET_F_GETFD:
5828 case TARGET_F_SETFD:
5829 case TARGET_F_GETFL:
5830 case TARGET_F_SETFL:
5831 ret = cmd;
5832 break;
5833 case TARGET_F_GETLK:
5834 ret = F_GETLK64;
5835 break;
5836 case TARGET_F_SETLK:
5837 ret = F_SETLK64;
5838 break;
5839 case TARGET_F_SETLKW:
5840 ret = F_SETLKW64;
5841 break;
5842 case TARGET_F_GETOWN:
5843 ret = F_GETOWN;
5844 break;
5845 case TARGET_F_SETOWN:
5846 ret = F_SETOWN;
5847 break;
5848 case TARGET_F_GETSIG:
5849 ret = F_GETSIG;
5850 break;
5851 case TARGET_F_SETSIG:
5852 ret = F_SETSIG;
5853 break;
5854 #if TARGET_ABI_BITS == 32
5855 case TARGET_F_GETLK64:
5856 ret = F_GETLK64;
5857 break;
5858 case TARGET_F_SETLK64:
5859 ret = F_SETLK64;
5860 break;
5861 case TARGET_F_SETLKW64:
5862 ret = F_SETLKW64;
5863 break;
5864 #endif
5865 case TARGET_F_SETLEASE:
5866 ret = F_SETLEASE;
5867 break;
5868 case TARGET_F_GETLEASE:
5869 ret = F_GETLEASE;
5870 break;
5871 #ifdef F_DUPFD_CLOEXEC
5872 case TARGET_F_DUPFD_CLOEXEC:
5873 ret = F_DUPFD_CLOEXEC;
5874 break;
5875 #endif
5876 case TARGET_F_NOTIFY:
5877 ret = F_NOTIFY;
5878 break;
5879 #ifdef F_GETOWN_EX
5880 case TARGET_F_GETOWN_EX:
5881 ret = F_GETOWN_EX;
5882 break;
5883 #endif
5884 #ifdef F_SETOWN_EX
5885 case TARGET_F_SETOWN_EX:
5886 ret = F_SETOWN_EX;
5887 break;
5888 #endif
5889 #ifdef F_SETPIPE_SZ
5890 case TARGET_F_SETPIPE_SZ:
5891 ret = F_SETPIPE_SZ;
5892 break;
5893 case TARGET_F_GETPIPE_SZ:
5894 ret = F_GETPIPE_SZ;
5895 break;
5896 #endif
5897 default:
5898 ret = -TARGET_EINVAL;
5899 break;
5900 }
5901
5902 #if defined(__powerpc64__)
5903 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
5904 * is not supported by kernel. The glibc fcntl call actually adjusts
5905 * them to 5, 6 and 7 before making the syscall(). Since we make the
5906 * syscall directly, adjust to what is supported by the kernel.
5907 */
5908 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
5909 ret -= F_GETLK64 - 5;
5910 }
5911 #endif
5912
5913 return ret;
5914 }
5915
5916 #define FLOCK_TRANSTBL \
5917 switch (type) { \
5918 TRANSTBL_CONVERT(F_RDLCK); \
5919 TRANSTBL_CONVERT(F_WRLCK); \
5920 TRANSTBL_CONVERT(F_UNLCK); \
5921 TRANSTBL_CONVERT(F_EXLCK); \
5922 TRANSTBL_CONVERT(F_SHLCK); \
5923 }
5924
5925 static int target_to_host_flock(int type)
5926 {
5927 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
5928 FLOCK_TRANSTBL
5929 #undef TRANSTBL_CONVERT
5930 return -TARGET_EINVAL;
5931 }
5932
5933 static int host_to_target_flock(int type)
5934 {
5935 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
5936 FLOCK_TRANSTBL
5937 #undef TRANSTBL_CONVERT
5938 /* if we don't know how to convert the value coming
5939 * from the host we copy to the target field as-is
5940 */
5941 return type;
5942 }
5943
5944 static inline abi_long copy_from_user_flock(struct flock64 *fl,
5945 abi_ulong target_flock_addr)
5946 {
5947 struct target_flock *target_fl;
5948 int l_type;
5949
5950 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
5951 return -TARGET_EFAULT;
5952 }
5953
5954 __get_user(l_type, &target_fl->l_type);
5955 l_type = target_to_host_flock(l_type);
5956 if (l_type < 0) {
5957 return l_type;
5958 }
5959 fl->l_type = l_type;
5960 __get_user(fl->l_whence, &target_fl->l_whence);
5961 __get_user(fl->l_start, &target_fl->l_start);
5962 __get_user(fl->l_len, &target_fl->l_len);
5963 __get_user(fl->l_pid, &target_fl->l_pid);
5964 unlock_user_struct(target_fl, target_flock_addr, 0);
5965 return 0;
5966 }
5967
5968 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
5969 const struct flock64 *fl)
5970 {
5971 struct target_flock *target_fl;
5972 short l_type;
5973
5974 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
5975 return -TARGET_EFAULT;
5976 }
5977
5978 l_type = host_to_target_flock(fl->l_type);
5979 __put_user(l_type, &target_fl->l_type);
5980 __put_user(fl->l_whence, &target_fl->l_whence);
5981 __put_user(fl->l_start, &target_fl->l_start);
5982 __put_user(fl->l_len, &target_fl->l_len);
5983 __put_user(fl->l_pid, &target_fl->l_pid);
5984 unlock_user_struct(target_fl, target_flock_addr, 1);
5985 return 0;
5986 }
5987
5988 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
5989 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
5990
5991 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
5992 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
5993 abi_ulong target_flock_addr)
5994 {
5995 struct target_oabi_flock64 *target_fl;
5996 int l_type;
5997
5998 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
5999 return -TARGET_EFAULT;
6000 }
6001
6002 __get_user(l_type, &target_fl->l_type);
6003 l_type = target_to_host_flock(l_type);
6004 if (l_type < 0) {
6005 return l_type;
6006 }
6007 fl->l_type = l_type;
6008 __get_user(fl->l_whence, &target_fl->l_whence);
6009 __get_user(fl->l_start, &target_fl->l_start);
6010 __get_user(fl->l_len, &target_fl->l_len);
6011 __get_user(fl->l_pid, &target_fl->l_pid);
6012 unlock_user_struct(target_fl, target_flock_addr, 0);
6013 return 0;
6014 }
6015
6016 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
6017 const struct flock64 *fl)
6018 {
6019 struct target_oabi_flock64 *target_fl;
6020 short l_type;
6021
6022 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6023 return -TARGET_EFAULT;
6024 }
6025
6026 l_type = host_to_target_flock(fl->l_type);
6027 __put_user(l_type, &target_fl->l_type);
6028 __put_user(fl->l_whence, &target_fl->l_whence);
6029 __put_user(fl->l_start, &target_fl->l_start);
6030 __put_user(fl->l_len, &target_fl->l_len);
6031 __put_user(fl->l_pid, &target_fl->l_pid);
6032 unlock_user_struct(target_fl, target_flock_addr, 1);
6033 return 0;
6034 }
6035 #endif
6036
6037 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
6038 abi_ulong target_flock_addr)
6039 {
6040 struct target_flock64 *target_fl;
6041 int l_type;
6042
6043 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
6044 return -TARGET_EFAULT;
6045 }
6046
6047 __get_user(l_type, &target_fl->l_type);
6048 l_type = target_to_host_flock(l_type);
6049 if (l_type < 0) {
6050 return l_type;
6051 }
6052 fl->l_type = l_type;
6053 __get_user(fl->l_whence, &target_fl->l_whence);
6054 __get_user(fl->l_start, &target_fl->l_start);
6055 __get_user(fl->l_len, &target_fl->l_len);
6056 __get_user(fl->l_pid, &target_fl->l_pid);
6057 unlock_user_struct(target_fl, target_flock_addr, 0);
6058 return 0;
6059 }
6060
6061 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
6062 const struct flock64 *fl)
6063 {
6064 struct target_flock64 *target_fl;
6065 short l_type;
6066
6067 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
6068 return -TARGET_EFAULT;
6069 }
6070
6071 l_type = host_to_target_flock(fl->l_type);
6072 __put_user(l_type, &target_fl->l_type);
6073 __put_user(fl->l_whence, &target_fl->l_whence);
6074 __put_user(fl->l_start, &target_fl->l_start);
6075 __put_user(fl->l_len, &target_fl->l_len);
6076 __put_user(fl->l_pid, &target_fl->l_pid);
6077 unlock_user_struct(target_fl, target_flock_addr, 1);
6078 return 0;
6079 }
6080
6081 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
6082 {
6083 struct flock64 fl64;
6084 #ifdef F_GETOWN_EX
6085 struct f_owner_ex fox;
6086 struct target_f_owner_ex *target_fox;
6087 #endif
6088 abi_long ret;
6089 int host_cmd = target_to_host_fcntl_cmd(cmd);
6090
6091 if (host_cmd == -TARGET_EINVAL)
6092 return host_cmd;
6093
6094 switch(cmd) {
6095 case TARGET_F_GETLK:
6096 ret = copy_from_user_flock(&fl64, arg);
6097 if (ret) {
6098 return ret;
6099 }
6100 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6101 if (ret == 0) {
6102 ret = copy_to_user_flock(arg, &fl64);
6103 }
6104 break;
6105
6106 case TARGET_F_SETLK:
6107 case TARGET_F_SETLKW:
6108 ret = copy_from_user_flock(&fl64, arg);
6109 if (ret) {
6110 return ret;
6111 }
6112 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6113 break;
6114
6115 case TARGET_F_GETLK64:
6116 ret = copy_from_user_flock64(&fl64, arg);
6117 if (ret) {
6118 return ret;
6119 }
6120 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6121 if (ret == 0) {
6122 ret = copy_to_user_flock64(arg, &fl64);
6123 }
6124 break;
6125 case TARGET_F_SETLK64:
6126 case TARGET_F_SETLKW64:
6127 ret = copy_from_user_flock64(&fl64, arg);
6128 if (ret) {
6129 return ret;
6130 }
6131 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
6132 break;
6133
6134 case TARGET_F_GETFL:
6135 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6136 if (ret >= 0) {
6137 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
6138 }
6139 break;
6140
6141 case TARGET_F_SETFL:
6142 ret = get_errno(safe_fcntl(fd, host_cmd,
6143 target_to_host_bitmask(arg,
6144 fcntl_flags_tbl)));
6145 break;
6146
6147 #ifdef F_GETOWN_EX
6148 case TARGET_F_GETOWN_EX:
6149 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6150 if (ret >= 0) {
6151 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
6152 return -TARGET_EFAULT;
6153 target_fox->type = tswap32(fox.type);
6154 target_fox->pid = tswap32(fox.pid);
6155 unlock_user_struct(target_fox, arg, 1);
6156 }
6157 break;
6158 #endif
6159
6160 #ifdef F_SETOWN_EX
6161 case TARGET_F_SETOWN_EX:
6162 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
6163 return -TARGET_EFAULT;
6164 fox.type = tswap32(target_fox->type);
6165 fox.pid = tswap32(target_fox->pid);
6166 unlock_user_struct(target_fox, arg, 0);
6167 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
6168 break;
6169 #endif
6170
6171 case TARGET_F_SETOWN:
6172 case TARGET_F_GETOWN:
6173 case TARGET_F_SETSIG:
6174 case TARGET_F_GETSIG:
6175 case TARGET_F_SETLEASE:
6176 case TARGET_F_GETLEASE:
6177 case TARGET_F_SETPIPE_SZ:
6178 case TARGET_F_GETPIPE_SZ:
6179 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
6180 break;
6181
6182 default:
6183 ret = get_errno(safe_fcntl(fd, cmd, arg));
6184 break;
6185 }
6186 return ret;
6187 }
6188
6189 #ifdef USE_UID16
6190
6191 static inline int high2lowuid(int uid)
6192 {
6193 if (uid > 65535)
6194 return 65534;
6195 else
6196 return uid;
6197 }
6198
6199 static inline int high2lowgid(int gid)
6200 {
6201 if (gid > 65535)
6202 return 65534;
6203 else
6204 return gid;
6205 }
6206
6207 static inline int low2highuid(int uid)
6208 {
6209 if ((int16_t)uid == -1)
6210 return -1;
6211 else
6212 return uid;
6213 }
6214
6215 static inline int low2highgid(int gid)
6216 {
6217 if ((int16_t)gid == -1)
6218 return -1;
6219 else
6220 return gid;
6221 }
6222 static inline int tswapid(int id)
6223 {
6224 return tswap16(id);
6225 }
6226
6227 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6228
6229 #else /* !USE_UID16 */
6230 static inline int high2lowuid(int uid)
6231 {
6232 return uid;
6233 }
6234 static inline int high2lowgid(int gid)
6235 {
6236 return gid;
6237 }
6238 static inline int low2highuid(int uid)
6239 {
6240 return uid;
6241 }
6242 static inline int low2highgid(int gid)
6243 {
6244 return gid;
6245 }
6246 static inline int tswapid(int id)
6247 {
6248 return tswap32(id);
6249 }
6250
6251 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6252
6253 #endif /* USE_UID16 */
6254
6255 /* We must do direct syscalls for setting UID/GID, because we want to
6256 * implement the Linux system call semantics of "change only for this thread",
6257 * not the libc/POSIX semantics of "change for all threads in process".
6258 * (See http://ewontfix.com/17/ for more details.)
6259 * We use the 32-bit version of the syscalls if present; if it is not
6260 * then either the host architecture supports 32-bit UIDs natively with
6261 * the standard syscall, or the 16-bit UID is the best we can do.
6262 */
6263 #ifdef __NR_setuid32
6264 #define __NR_sys_setuid __NR_setuid32
6265 #else
6266 #define __NR_sys_setuid __NR_setuid
6267 #endif
6268 #ifdef __NR_setgid32
6269 #define __NR_sys_setgid __NR_setgid32
6270 #else
6271 #define __NR_sys_setgid __NR_setgid
6272 #endif
6273 #ifdef __NR_setresuid32
6274 #define __NR_sys_setresuid __NR_setresuid32
6275 #else
6276 #define __NR_sys_setresuid __NR_setresuid
6277 #endif
6278 #ifdef __NR_setresgid32
6279 #define __NR_sys_setresgid __NR_setresgid32
6280 #else
6281 #define __NR_sys_setresgid __NR_setresgid
6282 #endif
6283
6284 _syscall1(int, sys_setuid, uid_t, uid)
6285 _syscall1(int, sys_setgid, gid_t, gid)
6286 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6287 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
6288
6289 void syscall_init(void)
6290 {
6291 IOCTLEntry *ie;
6292 const argtype *arg_type;
6293 int size;
6294 int i;
6295
6296 thunk_init(STRUCT_MAX);
6297
6298 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
6299 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
6300 #include "syscall_types.h"
6301 #undef STRUCT
6302 #undef STRUCT_SPECIAL
6303
6304 /* Build target_to_host_errno_table[] table from
6305 * host_to_target_errno_table[]. */
6306 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
6307 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
6308 }
6309
6310 /* we patch the ioctl size if necessary. We rely on the fact that
6311 no ioctl has all the bits at '1' in the size field */
6312 ie = ioctl_entries;
6313 while (ie->target_cmd != 0) {
6314 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
6315 TARGET_IOC_SIZEMASK) {
6316 arg_type = ie->arg_type;
6317 if (arg_type[0] != TYPE_PTR) {
6318 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
6319 ie->target_cmd);
6320 exit(1);
6321 }
6322 arg_type++;
6323 size = thunk_type_size(arg_type, 0);
6324 ie->target_cmd = (ie->target_cmd &
6325 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
6326 (size << TARGET_IOC_SIZESHIFT);
6327 }
6328
6329 /* automatic consistency check if same arch */
6330 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
6331 (defined(__x86_64__) && defined(TARGET_X86_64))
6332 if (unlikely(ie->target_cmd != ie->host_cmd)) {
6333 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
6334 ie->name, ie->target_cmd, ie->host_cmd);
6335 }
6336 #endif
6337 ie++;
6338 }
6339 }
6340
6341 #if TARGET_ABI_BITS == 32
6342 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
6343 {
6344 #ifdef TARGET_WORDS_BIGENDIAN
6345 return ((uint64_t)word0 << 32) | word1;
6346 #else
6347 return ((uint64_t)word1 << 32) | word0;
6348 #endif
6349 }
6350 #else /* TARGET_ABI_BITS == 32 */
6351 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
6352 {
6353 return word0;
6354 }
6355 #endif /* TARGET_ABI_BITS != 32 */
6356
6357 #ifdef TARGET_NR_truncate64
6358 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
6359 abi_long arg2,
6360 abi_long arg3,
6361 abi_long arg4)
6362 {
6363 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
6364 arg2 = arg3;
6365 arg3 = arg4;
6366 }
6367 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
6368 }
6369 #endif
6370
6371 #ifdef TARGET_NR_ftruncate64
6372 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
6373 abi_long arg2,
6374 abi_long arg3,
6375 abi_long arg4)
6376 {
6377 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
6378 arg2 = arg3;
6379 arg3 = arg4;
6380 }
6381 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
6382 }
6383 #endif
6384
6385 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec,
6386 abi_ulong target_addr)
6387 {
6388 struct target_itimerspec *target_itspec;
6389
6390 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) {
6391 return -TARGET_EFAULT;
6392 }
6393
6394 host_itspec->it_interval.tv_sec =
6395 tswapal(target_itspec->it_interval.tv_sec);
6396 host_itspec->it_interval.tv_nsec =
6397 tswapal(target_itspec->it_interval.tv_nsec);
6398 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec);
6399 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec);
6400
6401 unlock_user_struct(target_itspec, target_addr, 1);
6402 return 0;
6403 }
6404
6405 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
6406 struct itimerspec *host_its)
6407 {
6408 struct target_itimerspec *target_itspec;
6409
6410 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) {
6411 return -TARGET_EFAULT;
6412 }
6413
6414 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec);
6415 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec);
6416
6417 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec);
6418 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec);
6419
6420 unlock_user_struct(target_itspec, target_addr, 0);
6421 return 0;
6422 }
6423
6424 static inline abi_long target_to_host_timex(struct timex *host_tx,
6425 abi_long target_addr)
6426 {
6427 struct target_timex *target_tx;
6428
6429 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
6430 return -TARGET_EFAULT;
6431 }
6432
6433 __get_user(host_tx->modes, &target_tx->modes);
6434 __get_user(host_tx->offset, &target_tx->offset);
6435 __get_user(host_tx->freq, &target_tx->freq);
6436 __get_user(host_tx->maxerror, &target_tx->maxerror);
6437 __get_user(host_tx->esterror, &target_tx->esterror);
6438 __get_user(host_tx->status, &target_tx->status);
6439 __get_user(host_tx->constant, &target_tx->constant);
6440 __get_user(host_tx->precision, &target_tx->precision);
6441 __get_user(host_tx->tolerance, &target_tx->tolerance);
6442 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6443 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6444 __get_user(host_tx->tick, &target_tx->tick);
6445 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6446 __get_user(host_tx->jitter, &target_tx->jitter);
6447 __get_user(host_tx->shift, &target_tx->shift);
6448 __get_user(host_tx->stabil, &target_tx->stabil);
6449 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
6450 __get_user(host_tx->calcnt, &target_tx->calcnt);
6451 __get_user(host_tx->errcnt, &target_tx->errcnt);
6452 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
6453 __get_user(host_tx->tai, &target_tx->tai);
6454
6455 unlock_user_struct(target_tx, target_addr, 0);
6456 return 0;
6457 }
6458
6459 static inline abi_long host_to_target_timex(abi_long target_addr,
6460 struct timex *host_tx)
6461 {
6462 struct target_timex *target_tx;
6463
6464 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
6465 return -TARGET_EFAULT;
6466 }
6467
6468 __put_user(host_tx->modes, &target_tx->modes);
6469 __put_user(host_tx->offset, &target_tx->offset);
6470 __put_user(host_tx->freq, &target_tx->freq);
6471 __put_user(host_tx->maxerror, &target_tx->maxerror);
6472 __put_user(host_tx->esterror, &target_tx->esterror);
6473 __put_user(host_tx->status, &target_tx->status);
6474 __put_user(host_tx->constant, &target_tx->constant);
6475 __put_user(host_tx->precision, &target_tx->precision);
6476 __put_user(host_tx->tolerance, &target_tx->tolerance);
6477 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6478 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6479 __put_user(host_tx->tick, &target_tx->tick);
6480 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6481 __put_user(host_tx->jitter, &target_tx->jitter);
6482 __put_user(host_tx->shift, &target_tx->shift);
6483 __put_user(host_tx->stabil, &target_tx->stabil);
6484 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
6485 __put_user(host_tx->calcnt, &target_tx->calcnt);
6486 __put_user(host_tx->errcnt, &target_tx->errcnt);
6487 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
6488 __put_user(host_tx->tai, &target_tx->tai);
6489
6490 unlock_user_struct(target_tx, target_addr, 1);
6491 return 0;
6492 }
6493
6494
6495 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
6496 abi_ulong target_addr)
6497 {
6498 struct target_sigevent *target_sevp;
6499
6500 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
6501 return -TARGET_EFAULT;
6502 }
6503
6504 /* This union is awkward on 64 bit systems because it has a 32 bit
6505 * integer and a pointer in it; we follow the conversion approach
6506 * used for handling sigval types in signal.c so the guest should get
6507 * the correct value back even if we did a 64 bit byteswap and it's
6508 * using the 32 bit integer.
6509 */
6510 host_sevp->sigev_value.sival_ptr =
6511 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
6512 host_sevp->sigev_signo =
6513 target_to_host_signal(tswap32(target_sevp->sigev_signo));
6514 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
6515 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
6516
6517 unlock_user_struct(target_sevp, target_addr, 1);
6518 return 0;
6519 }
6520
6521 #if defined(TARGET_NR_mlockall)
6522 static inline int target_to_host_mlockall_arg(int arg)
6523 {
6524 int result = 0;
6525
6526 if (arg & TARGET_MLOCKALL_MCL_CURRENT) {
6527 result |= MCL_CURRENT;
6528 }
6529 if (arg & TARGET_MLOCKALL_MCL_FUTURE) {
6530 result |= MCL_FUTURE;
6531 }
6532 return result;
6533 }
6534 #endif
6535
6536 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
6537 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
6538 defined(TARGET_NR_newfstatat))
6539 static inline abi_long host_to_target_stat64(void *cpu_env,
6540 abi_ulong target_addr,
6541 struct stat *host_st)
6542 {
6543 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
6544 if (((CPUARMState *)cpu_env)->eabi) {
6545 struct target_eabi_stat64 *target_st;
6546
6547 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6548 return -TARGET_EFAULT;
6549 memset(target_st, 0, sizeof(struct target_eabi_stat64));
6550 __put_user(host_st->st_dev, &target_st->st_dev);
6551 __put_user(host_st->st_ino, &target_st->st_ino);
6552 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6553 __put_user(host_st->st_ino, &target_st->__st_ino);
6554 #endif
6555 __put_user(host_st->st_mode, &target_st->st_mode);
6556 __put_user(host_st->st_nlink, &target_st->st_nlink);
6557 __put_user(host_st->st_uid, &target_st->st_uid);
6558 __put_user(host_st->st_gid, &target_st->st_gid);
6559 __put_user(host_st->st_rdev, &target_st->st_rdev);
6560 __put_user(host_st->st_size, &target_st->st_size);
6561 __put_user(host_st->st_blksize, &target_st->st_blksize);
6562 __put_user(host_st->st_blocks, &target_st->st_blocks);
6563 __put_user(host_st->st_atime, &target_st->target_st_atime);
6564 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6565 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6566 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
6567 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
6568 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
6569 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
6570 #endif
6571 unlock_user_struct(target_st, target_addr, 1);
6572 } else
6573 #endif
6574 {
6575 #if defined(TARGET_HAS_STRUCT_STAT64)
6576 struct target_stat64 *target_st;
6577 #else
6578 struct target_stat *target_st;
6579 #endif
6580
6581 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6582 return -TARGET_EFAULT;
6583 memset(target_st, 0, sizeof(*target_st));
6584 __put_user(host_st->st_dev, &target_st->st_dev);
6585 __put_user(host_st->st_ino, &target_st->st_ino);
6586 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6587 __put_user(host_st->st_ino, &target_st->__st_ino);
6588 #endif
6589 __put_user(host_st->st_mode, &target_st->st_mode);
6590 __put_user(host_st->st_nlink, &target_st->st_nlink);
6591 __put_user(host_st->st_uid, &target_st->st_uid);
6592 __put_user(host_st->st_gid, &target_st->st_gid);
6593 __put_user(host_st->st_rdev, &target_st->st_rdev);
6594 /* XXX: better use of kernel struct */
6595 __put_user(host_st->st_size, &target_st->st_size);
6596 __put_user(host_st->st_blksize, &target_st->st_blksize);
6597 __put_user(host_st->st_blocks, &target_st->st_blocks);
6598 __put_user(host_st->st_atime, &target_st->target_st_atime);
6599 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6600 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6601 #if _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700
6602 __put_user(host_st->st_atim.tv_nsec, &target_st->target_st_atime_nsec);
6603 __put_user(host_st->st_mtim.tv_nsec, &target_st->target_st_mtime_nsec);
6604 __put_user(host_st->st_ctim.tv_nsec, &target_st->target_st_ctime_nsec);
6605 #endif
6606 unlock_user_struct(target_st, target_addr, 1);
6607 }
6608
6609 return 0;
6610 }
6611 #endif
6612
6613 #if defined(TARGET_NR_statx) && defined(__NR_statx)
6614 static inline abi_long host_to_target_statx(struct target_statx *host_stx,
6615 abi_ulong target_addr)
6616 {
6617 struct target_statx *target_stx;
6618
6619 if (!lock_user_struct(VERIFY_WRITE, target_stx, target_addr, 0)) {
6620 return -TARGET_EFAULT;
6621 }
6622 memset(target_stx, 0, sizeof(*target_stx));
6623
6624 __put_user(host_stx->stx_mask, &target_stx->stx_mask);
6625 __put_user(host_stx->stx_blksize, &target_stx->stx_blksize);
6626 __put_user(host_stx->stx_attributes, &target_stx->stx_attributes);
6627 __put_user(host_stx->stx_nlink, &target_stx->stx_nlink);
6628 __put_user(host_stx->stx_uid, &target_stx->stx_uid);
6629 __put_user(host_stx->stx_gid, &target_stx->stx_gid);
6630 __put_user(host_stx->stx_mode, &target_stx->stx_mode);
6631 __put_user(host_stx->stx_ino, &target_stx->stx_ino);
6632 __put_user(host_stx->stx_size, &target_stx->stx_size);
6633 __put_user(host_stx->stx_blocks, &target_stx->stx_blocks);
6634 __put_user(host_stx->stx_attributes_mask, &target_stx->stx_attributes_mask);
6635 __put_user(host_stx->stx_atime.tv_sec, &target_stx->stx_atime.tv_sec);
6636 __put_user(host_stx->stx_atime.tv_nsec, &target_stx->stx_atime.tv_nsec);
6637 __put_user(host_stx->stx_btime.tv_sec, &target_stx->stx_atime.tv_sec);
6638 __put_user(host_stx->stx_btime.tv_nsec, &target_stx->stx_atime.tv_nsec);
6639 __put_user(host_stx->stx_ctime.tv_sec, &target_stx->stx_atime.tv_sec);
6640 __put_user(host_stx->stx_ctime.tv_nsec, &target_stx->stx_atime.tv_nsec);
6641 __put_user(host_stx->stx_mtime.tv_sec, &target_stx->stx_atime.tv_sec);
6642 __put_user(host_stx->stx_mtime.tv_nsec, &target_stx->stx_atime.tv_nsec);
6643 __put_user(host_stx->stx_rdev_major, &target_stx->stx_rdev_major);
6644 __put_user(host_stx->stx_rdev_minor, &target_stx->stx_rdev_minor);
6645 __put_user(host_stx->stx_dev_major, &target_stx->stx_dev_major);
6646 __put_user(host_stx->stx_dev_minor, &target_stx->stx_dev_minor);
6647
6648 unlock_user_struct(target_stx, target_addr, 1);
6649
6650 return 0;
6651 }
6652 #endif
6653
6654
6655 /* ??? Using host futex calls even when target atomic operations
6656 are not really atomic probably breaks things. However implementing
6657 futexes locally would make futexes shared between multiple processes
6658 tricky. However they're probably useless because guest atomic
6659 operations won't work either. */
6660 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
6661 target_ulong uaddr2, int val3)
6662 {
6663 struct timespec ts, *pts;
6664 int base_op;
6665
6666 /* ??? We assume FUTEX_* constants are the same on both host
6667 and target. */
6668 #ifdef FUTEX_CMD_MASK
6669 base_op = op & FUTEX_CMD_MASK;
6670 #else
6671 base_op = op;
6672 #endif
6673 switch (base_op) {
6674 case FUTEX_WAIT:
6675 case FUTEX_WAIT_BITSET:
6676 if (timeout) {
6677 pts = &ts;
6678 target_to_host_timespec(pts, timeout);
6679 } else {
6680 pts = NULL;
6681 }
6682 return get_errno(safe_futex(g2h(uaddr), op, tswap32(val),
6683 pts, NULL, val3));
6684 case FUTEX_WAKE:
6685 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
6686 case FUTEX_FD:
6687 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
6688 case FUTEX_REQUEUE:
6689 case FUTEX_CMP_REQUEUE:
6690 case FUTEX_WAKE_OP:
6691 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
6692 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
6693 But the prototype takes a `struct timespec *'; insert casts
6694 to satisfy the compiler. We do not need to tswap TIMEOUT
6695 since it's not compared to guest memory. */
6696 pts = (struct timespec *)(uintptr_t) timeout;
6697 return get_errno(safe_futex(g2h(uaddr), op, val, pts,
6698 g2h(uaddr2),
6699 (base_op == FUTEX_CMP_REQUEUE
6700 ? tswap32(val3)
6701 : val3)));
6702 default:
6703 return -TARGET_ENOSYS;
6704 }
6705 }
6706 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
6707 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
6708 abi_long handle, abi_long mount_id,
6709 abi_long flags)
6710 {
6711 struct file_handle *target_fh;
6712 struct file_handle *fh;
6713 int mid = 0;
6714 abi_long ret;
6715 char *name;
6716 unsigned int size, total_size;
6717
6718 if (get_user_s32(size, handle)) {
6719 return -TARGET_EFAULT;
6720 }
6721
6722 name = lock_user_string(pathname);
6723 if (!name) {
6724 return -TARGET_EFAULT;
6725 }
6726
6727 total_size = sizeof(struct file_handle) + size;
6728 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
6729 if (!target_fh) {
6730 unlock_user(name, pathname, 0);
6731 return -TARGET_EFAULT;
6732 }
6733
6734 fh = g_malloc0(total_size);
6735 fh->handle_bytes = size;
6736
6737 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
6738 unlock_user(name, pathname, 0);
6739
6740 /* man name_to_handle_at(2):
6741 * Other than the use of the handle_bytes field, the caller should treat
6742 * the file_handle structure as an opaque data type
6743 */
6744
6745 memcpy(target_fh, fh, total_size);
6746 target_fh->handle_bytes = tswap32(fh->handle_bytes);
6747 target_fh->handle_type = tswap32(fh->handle_type);
6748 g_free(fh);
6749 unlock_user(target_fh, handle, total_size);
6750
6751 if (put_user_s32(mid, mount_id)) {
6752 return -TARGET_EFAULT;
6753 }
6754
6755 return ret;
6756
6757 }
6758 #endif
6759
6760 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
6761 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
6762 abi_long flags)
6763 {
6764 struct file_handle *target_fh;
6765 struct file_handle *fh;
6766 unsigned int size, total_size;
6767 abi_long ret;
6768
6769 if (get_user_s32(size, handle)) {
6770 return -TARGET_EFAULT;
6771 }
6772
6773 total_size = sizeof(struct file_handle) + size;
6774 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
6775 if (!target_fh) {
6776 return -TARGET_EFAULT;
6777 }
6778
6779 fh = g_memdup(target_fh, total_size);
6780 fh->handle_bytes = size;
6781 fh->handle_type = tswap32(target_fh->handle_type);
6782
6783 ret = get_errno(open_by_handle_at(mount_fd, fh,
6784 target_to_host_bitmask(flags, fcntl_flags_tbl)));
6785
6786 g_free(fh);
6787
6788 unlock_user(target_fh, handle, total_size);
6789
6790 return ret;
6791 }
6792 #endif
6793
6794 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
6795
6796 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
6797 {
6798 int host_flags;
6799 target_sigset_t *target_mask;
6800 sigset_t host_mask;
6801 abi_long ret;
6802
6803 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
6804 return -TARGET_EINVAL;
6805 }
6806 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
6807 return -TARGET_EFAULT;
6808 }
6809
6810 target_to_host_sigset(&host_mask, target_mask);
6811
6812 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
6813
6814 ret = get_errno(signalfd(fd, &host_mask, host_flags));
6815 if (ret >= 0) {
6816 fd_trans_register(ret, &target_signalfd_trans);
6817 }
6818
6819 unlock_user_struct(target_mask, mask, 0);
6820
6821 return ret;
6822 }
6823 #endif
6824
6825 /* Map host to target signal numbers for the wait family of syscalls.
6826 Assume all other status bits are the same. */
6827 int host_to_target_waitstatus(int status)
6828 {
6829 if (WIFSIGNALED(status)) {
6830 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
6831 }
6832 if (WIFSTOPPED(status)) {
6833 return (host_to_target_signal(WSTOPSIG(status)) << 8)
6834 | (status & 0xff);
6835 }
6836 return status;
6837 }
6838
6839 static int open_self_cmdline(void *cpu_env, int fd)
6840 {
6841 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
6842 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
6843 int i;
6844
6845 for (i = 0; i < bprm->argc; i++) {
6846 size_t len = strlen(bprm->argv[i]) + 1;
6847
6848 if (write(fd, bprm->argv[i], len) != len) {
6849 return -1;
6850 }
6851 }
6852
6853 return 0;
6854 }
6855
6856 static int open_self_maps(void *cpu_env, int fd)
6857 {
6858 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
6859 TaskState *ts = cpu->opaque;
6860 FILE *fp;
6861 char *line = NULL;
6862 size_t len = 0;
6863 ssize_t read;
6864
6865 fp = fopen("/proc/self/maps", "r");
6866 if (fp == NULL) {
6867 return -1;
6868 }
6869
6870 while ((read = getline(&line, &len, fp)) != -1) {
6871 int fields, dev_maj, dev_min, inode;
6872 uint64_t min, max, offset;
6873 char flag_r, flag_w, flag_x, flag_p;
6874 char path[512] = "";
6875 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
6876 " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
6877 &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
6878
6879 if ((fields < 10) || (fields > 11)) {
6880 continue;
6881 }
6882 if (h2g_valid(min)) {
6883 int flags = page_get_flags(h2g(min));
6884 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX) + 1;
6885 if (page_check_range(h2g(min), max - min, flags) == -1) {
6886 continue;
6887 }
6888 if (h2g(min) == ts->info->stack_limit) {
6889 pstrcpy(path, sizeof(path), " [stack]");
6890 }
6891 dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
6892 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
6893 h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
6894 flag_x, flag_p, offset, dev_maj, dev_min, inode,
6895 path[0] ? " " : "", path);
6896 }
6897 }
6898
6899 free(line);
6900 fclose(fp);
6901
6902 return 0;
6903 }
6904
6905 static int open_self_stat(void *cpu_env, int fd)
6906 {
6907 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
6908 TaskState *ts = cpu->opaque;
6909 abi_ulong start_stack = ts->info->start_stack;
6910 int i;
6911
6912 for (i = 0; i < 44; i++) {
6913 char buf[128];
6914 int len;
6915 uint64_t val = 0;
6916
6917 if (i == 0) {
6918 /* pid */
6919 val = getpid();
6920 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
6921 } else if (i == 1) {
6922 /* app name */
6923 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
6924 } else if (i == 27) {
6925 /* stack bottom */
6926 val = start_stack;
6927 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
6928 } else {
6929 /* for the rest, there is MasterCard */
6930 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
6931 }
6932
6933 len = strlen(buf);
6934 if (write(fd, buf, len) != len) {
6935 return -1;
6936 }
6937 }
6938
6939 return 0;
6940 }
6941
6942 static int open_self_auxv(void *cpu_env, int fd)
6943 {
6944 CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
6945 TaskState *ts = cpu->opaque;
6946 abi_ulong auxv = ts->info->saved_auxv;
6947 abi_ulong len = ts->info->auxv_len;
6948 char *ptr;
6949
6950 /*
6951 * Auxiliary vector is stored in target process stack.
6952 * read in whole auxv vector and copy it to file
6953 */
6954 ptr = lock_user(VERIFY_READ, auxv, len, 0);
6955 if (ptr != NULL) {
6956 while (len > 0) {
6957 ssize_t r;
6958 r = write(fd, ptr, len);
6959 if (r <= 0) {
6960 break;
6961 }
6962 len -= r;
6963 ptr += r;
6964 }
6965 lseek(fd, 0, SEEK_SET);
6966 unlock_user(ptr, auxv, len);
6967 }
6968
6969 return 0;
6970 }
6971
6972 static int is_proc_myself(const char *filename, const char *entry)
6973 {
6974 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
6975 filename += strlen("/proc/");
6976 if (!strncmp(filename, "self/", strlen("self/"))) {
6977 filename += strlen("self/");
6978 } else if (*filename >= '1' && *filename <= '9') {
6979 char myself[80];
6980 snprintf(myself, sizeof(myself), "%d/", getpid());
6981 if (!strncmp(filename, myself, strlen(myself))) {
6982 filename += strlen(myself);
6983 } else {
6984 return 0;
6985 }
6986 } else {
6987 return 0;
6988 }
6989 if (!strcmp(filename, entry)) {
6990 return 1;
6991 }
6992 }
6993 return 0;
6994 }
6995
6996 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
6997 defined(TARGET_SPARC) || defined(TARGET_M68K)
6998 static int is_proc(const char *filename, const char *entry)
6999 {
7000 return strcmp(filename, entry) == 0;
7001 }
7002 #endif
7003
7004 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7005 static int open_net_route(void *cpu_env, int fd)
7006 {
7007 FILE *fp;
7008 char *line = NULL;
7009 size_t len = 0;
7010 ssize_t read;
7011
7012 fp = fopen("/proc/net/route", "r");
7013 if (fp == NULL) {
7014 return -1;
7015 }
7016
7017 /* read header */
7018
7019 read = getline(&line, &len, fp);
7020 dprintf(fd, "%s", line);
7021
7022 /* read routes */
7023
7024 while ((read = getline(&line, &len, fp)) != -1) {
7025 char iface[16];
7026 uint32_t dest, gw, mask;
7027 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
7028 int fields;
7029
7030 fields = sscanf(line,
7031 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7032 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
7033 &mask, &mtu, &window, &irtt);
7034 if (fields != 11) {
7035 continue;
7036 }
7037 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
7038 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
7039 metric, tswap32(mask), mtu, window, irtt);
7040 }
7041
7042 free(line);
7043 fclose(fp);
7044
7045 return 0;
7046 }
7047 #endif
7048
7049 #if defined(TARGET_SPARC)
7050 static int open_cpuinfo(void *cpu_env, int fd)
7051 {
7052 dprintf(fd, "type\t\t: sun4u\n");
7053 return 0;
7054 }
7055 #endif
7056
7057 #if defined(TARGET_M68K)
7058 static int open_hardware(void *cpu_env, int fd)
7059 {
7060 dprintf(fd, "Model:\t\tqemu-m68k\n");
7061 return 0;
7062 }
7063 #endif
7064
7065 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
7066 {
7067 struct fake_open {
7068 const char *filename;
7069 int (*fill)(void *cpu_env, int fd);
7070 int (*cmp)(const char *s1, const char *s2);
7071 };
7072 const struct fake_open *fake_open;
7073 static const struct fake_open fakes[] = {
7074 { "maps", open_self_maps, is_proc_myself },
7075 { "stat", open_self_stat, is_proc_myself },
7076 { "auxv", open_self_auxv, is_proc_myself },
7077 { "cmdline", open_self_cmdline, is_proc_myself },
7078 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
7079 { "/proc/net/route", open_net_route, is_proc },
7080 #endif
7081 #if defined(TARGET_SPARC)
7082 { "/proc/cpuinfo", open_cpuinfo, is_proc },
7083 #endif
7084 #if defined(TARGET_M68K)
7085 { "/proc/hardware", open_hardware, is_proc },
7086 #endif
7087 { NULL, NULL, NULL }
7088 };
7089
7090 if (is_proc_myself(pathname, "exe")) {
7091 int execfd = qemu_getauxval(AT_EXECFD);
7092 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
7093 }
7094
7095 for (fake_open = fakes; fake_open->filename; fake_open++) {
7096 if (fake_open->cmp(pathname, fake_open->filename)) {
7097 break;
7098 }
7099 }
7100
7101 if (fake_open->filename) {
7102 const char *tmpdir;
7103 char filename[PATH_MAX];
7104 int fd, r;
7105
7106 /* create temporary file to map stat to */
7107 tmpdir = getenv("TMPDIR");
7108 if (!tmpdir)
7109 tmpdir = "/tmp";
7110 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
7111 fd = mkstemp(filename);
7112 if (fd < 0) {
7113 return fd;
7114 }
7115 unlink(filename);
7116
7117 if ((r = fake_open->fill(cpu_env, fd))) {
7118 int e = errno;
7119 close(fd);
7120 errno = e;
7121 return r;
7122 }
7123 lseek(fd, 0, SEEK_SET);
7124
7125 return fd;
7126 }
7127
7128 return safe_openat(dirfd, path(pathname), flags, mode);
7129 }
7130
7131 #define TIMER_MAGIC 0x0caf0000
7132 #define TIMER_MAGIC_MASK 0xffff0000
7133
7134 /* Convert QEMU provided timer ID back to internal 16bit index format */
7135 static target_timer_t get_timer_id(abi_long arg)
7136 {
7137 target_timer_t timerid = arg;
7138
7139 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
7140 return -TARGET_EINVAL;
7141 }
7142
7143 timerid &= 0xffff;
7144
7145 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
7146 return -TARGET_EINVAL;
7147 }
7148
7149 return timerid;
7150 }
7151
7152 static int target_to_host_cpu_mask(unsigned long *host_mask,
7153 size_t host_size,
7154 abi_ulong target_addr,
7155 size_t target_size)
7156 {
7157 unsigned target_bits = sizeof(abi_ulong) * 8;
7158 unsigned host_bits = sizeof(*host_mask) * 8;
7159 abi_ulong *target_mask;
7160 unsigned i, j;
7161
7162 assert(host_size >= target_size);
7163
7164 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
7165 if (!target_mask) {
7166 return -TARGET_EFAULT;
7167 }
7168 memset(host_mask, 0, host_size);
7169
7170 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
7171 unsigned bit = i * target_bits;
7172 abi_ulong val;
7173
7174 __get_user(val, &target_mask[i]);
7175 for (j = 0; j < target_bits; j++, bit++) {
7176 if (val & (1UL << j)) {
7177 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
7178 }
7179 }
7180 }
7181
7182 unlock_user(target_mask, target_addr, 0);
7183 return 0;
7184 }
7185
7186 static int host_to_target_cpu_mask(const unsigned long *host_mask,
7187 size_t host_size,
7188 abi_ulong target_addr,
7189 size_t target_size)
7190 {
7191 unsigned target_bits = sizeof(abi_ulong) * 8;
7192 unsigned host_bits = sizeof(*host_mask) * 8;
7193 abi_ulong *target_mask;
7194 unsigned i, j;
7195
7196 assert(host_size >= target_size);
7197
7198 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
7199 if (!target_mask) {
7200 return -TARGET_EFAULT;
7201 }
7202
7203 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
7204 unsigned bit = i * target_bits;
7205 abi_ulong val = 0;
7206
7207 for (j = 0; j < target_bits; j++, bit++) {
7208 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
7209 val |= 1UL << j;
7210 }
7211 }
7212 __put_user(val, &target_mask[i]);
7213 }
7214
7215 unlock_user(target_mask, target_addr, target_size);
7216 return 0;
7217 }
7218
7219 /* This is an internal helper for do_syscall so that it is easier
7220 * to have a single return point, so that actions, such as logging
7221 * of syscall results, can be performed.
7222 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
7223 */
7224 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
7225 abi_long arg2, abi_long arg3, abi_long arg4,
7226 abi_long arg5, abi_long arg6, abi_long arg7,
7227 abi_long arg8)
7228 {
7229 CPUState *cpu = env_cpu(cpu_env);
7230 abi_long ret;
7231 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
7232 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
7233 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) \
7234 || defined(TARGET_NR_statx)
7235 struct stat st;
7236 #endif
7237 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
7238 || defined(TARGET_NR_fstatfs)
7239 struct statfs stfs;
7240 #endif
7241 void *p;
7242
7243 switch(num) {
7244 case TARGET_NR_exit:
7245 /* In old applications this may be used to implement _exit(2).
7246 However in threaded applictions it is used for thread termination,
7247 and _exit_group is used for application termination.
7248 Do thread termination if we have more then one thread. */
7249
7250 if (block_signals()) {
7251 return -TARGET_ERESTARTSYS;
7252 }
7253
7254 cpu_list_lock();
7255
7256 if (CPU_NEXT(first_cpu)) {
7257 TaskState *ts;
7258
7259 /* Remove the CPU from the list. */
7260 QTAILQ_REMOVE_RCU(&cpus, cpu, node);
7261
7262 cpu_list_unlock();
7263
7264 ts = cpu->opaque;
7265 if (ts->child_tidptr) {
7266 put_user_u32(0, ts->child_tidptr);
7267 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
7268 NULL, NULL, 0);
7269 }
7270 thread_cpu = NULL;
7271 object_unref(OBJECT(cpu));
7272 g_free(ts);
7273 rcu_unregister_thread();
7274 pthread_exit(NULL);
7275 }
7276
7277 cpu_list_unlock();
7278 preexit_cleanup(cpu_env, arg1);
7279 _exit(arg1);
7280 return 0; /* avoid warning */
7281 case TARGET_NR_read:
7282 if (arg2 == 0 && arg3 == 0) {
7283 return get_errno(safe_read(arg1, 0, 0));
7284 } else {
7285 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
7286 return -TARGET_EFAULT;
7287 ret = get_errno(safe_read(arg1, p, arg3));
7288 if (ret >= 0 &&
7289 fd_trans_host_to_target_data(arg1)) {
7290 ret = fd_trans_host_to_target_data(arg1)(p, ret);
7291 }
7292 unlock_user(p, arg2, ret);
7293 }
7294 return ret;
7295 case TARGET_NR_write:
7296 if (arg2 == 0 && arg3 == 0) {
7297 return get_errno(safe_write(arg1, 0, 0));
7298 }
7299 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
7300 return -TARGET_EFAULT;
7301 if (fd_trans_target_to_host_data(arg1)) {
7302 void *copy = g_malloc(arg3);
7303 memcpy(copy, p, arg3);
7304 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
7305 if (ret >= 0) {
7306 ret = get_errno(safe_write(arg1, copy, ret));
7307 }
7308 g_free(copy);
7309 } else {
7310 ret = get_errno(safe_write(arg1, p, arg3));
7311 }
7312 unlock_user(p, arg2, 0);
7313 return ret;
7314
7315 #ifdef TARGET_NR_open
7316 case TARGET_NR_open:
7317 if (!(p = lock_user_string(arg1)))
7318 return -TARGET_EFAULT;
7319 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
7320 target_to_host_bitmask(arg2, fcntl_flags_tbl),
7321 arg3));
7322 fd_trans_unregister(ret);
7323 unlock_user(p, arg1, 0);
7324 return ret;
7325 #endif
7326 case TARGET_NR_openat:
7327 if (!(p = lock_user_string(arg2)))
7328 return -TARGET_EFAULT;
7329 ret = get_errno(do_openat(cpu_env, arg1, p,
7330 target_to_host_bitmask(arg3, fcntl_flags_tbl),
7331 arg4));
7332 fd_trans_unregister(ret);
7333 unlock_user(p, arg2, 0);
7334 return ret;
7335 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7336 case TARGET_NR_name_to_handle_at:
7337 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
7338 return ret;
7339 #endif
7340 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7341 case TARGET_NR_open_by_handle_at:
7342 ret = do_open_by_handle_at(arg1, arg2, arg3);
7343 fd_trans_unregister(ret);
7344 return ret;
7345 #endif
7346 case TARGET_NR_close:
7347 fd_trans_unregister(arg1);
7348 return get_errno(close(arg1));
7349
7350 case TARGET_NR_brk:
7351 return do_brk(arg1);
7352 #ifdef TARGET_NR_fork
7353 case TARGET_NR_fork:
7354 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
7355 #endif
7356 #ifdef TARGET_NR_waitpid
7357 case TARGET_NR_waitpid:
7358 {
7359 int status;
7360 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
7361 if (!is_error(ret) && arg2 && ret
7362 && put_user_s32(host_to_target_waitstatus(status), arg2))
7363 return -TARGET_EFAULT;
7364 }
7365 return ret;
7366 #endif
7367 #ifdef TARGET_NR_waitid
7368 case TARGET_NR_waitid:
7369 {
7370 siginfo_t info;
7371 info.si_pid = 0;
7372 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
7373 if (!is_error(ret) && arg3 && info.si_pid != 0) {
7374 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
7375 return -TARGET_EFAULT;
7376 host_to_target_siginfo(p, &info);
7377 unlock_user(p, arg3, sizeof(target_siginfo_t));
7378 }
7379 }
7380 return ret;
7381 #endif
7382 #ifdef TARGET_NR_creat /* not on alpha */
7383 case TARGET_NR_creat:
7384 if (!(p = lock_user_string(arg1)))
7385 return -TARGET_EFAULT;
7386 ret = get_errno(creat(p, arg2));
7387 fd_trans_unregister(ret);
7388 unlock_user(p, arg1, 0);
7389 return ret;
7390 #endif
7391 #ifdef TARGET_NR_link
7392 case TARGET_NR_link:
7393 {
7394 void * p2;
7395 p = lock_user_string(arg1);
7396 p2 = lock_user_string(arg2);
7397 if (!p || !p2)
7398 ret = -TARGET_EFAULT;
7399 else
7400 ret = get_errno(link(p, p2));
7401 unlock_user(p2, arg2, 0);
7402 unlock_user(p, arg1, 0);
7403 }
7404 return ret;
7405 #endif
7406 #if defined(TARGET_NR_linkat)
7407 case TARGET_NR_linkat:
7408 {
7409 void * p2 = NULL;
7410 if (!arg2 || !arg4)
7411 return -TARGET_EFAULT;
7412 p = lock_user_string(arg2);
7413 p2 = lock_user_string(arg4);
7414 if (!p || !p2)
7415 ret = -TARGET_EFAULT;
7416 else
7417 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
7418 unlock_user(p, arg2, 0);
7419 unlock_user(p2, arg4, 0);
7420 }
7421 return ret;
7422 #endif
7423 #ifdef TARGET_NR_unlink
7424 case TARGET_NR_unlink:
7425 if (!(p = lock_user_string(arg1)))
7426 return -TARGET_EFAULT;
7427 ret = get_errno(unlink(p));
7428 unlock_user(p, arg1, 0);
7429 return ret;
7430 #endif
7431 #if defined(TARGET_NR_unlinkat)
7432 case TARGET_NR_unlinkat:
7433 if (!(p = lock_user_string(arg2)))
7434 return -TARGET_EFAULT;
7435 ret = get_errno(unlinkat(arg1, p, arg3));
7436 unlock_user(p, arg2, 0);
7437 return ret;
7438 #endif
7439 case TARGET_NR_execve:
7440 {
7441 char **argp, **envp;
7442 int argc, envc;
7443 abi_ulong gp;
7444 abi_ulong guest_argp;
7445 abi_ulong guest_envp;
7446 abi_ulong addr;
7447 char **q;
7448 int total_size = 0;
7449
7450 argc = 0;
7451 guest_argp = arg2;
7452 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
7453 if (get_user_ual(addr, gp))
7454 return -TARGET_EFAULT;
7455 if (!addr)
7456 break;
7457 argc++;
7458 }
7459 envc = 0;
7460 guest_envp = arg3;
7461 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
7462 if (get_user_ual(addr, gp))
7463 return -TARGET_EFAULT;
7464 if (!addr)
7465 break;
7466 envc++;
7467 }
7468
7469 argp = g_new0(char *, argc + 1);
7470 envp = g_new0(char *, envc + 1);
7471
7472 for (gp = guest_argp, q = argp; gp;
7473 gp += sizeof(abi_ulong), q++) {
7474 if (get_user_ual(addr, gp))
7475 goto execve_efault;
7476 if (!addr)
7477 break;
7478 if (!(*q = lock_user_string(addr)))
7479 goto execve_efault;
7480 total_size += strlen(*q) + 1;
7481 }
7482 *q = NULL;
7483
7484 for (gp = guest_envp, q = envp; gp;
7485 gp += sizeof(abi_ulong), q++) {
7486 if (get_user_ual(addr, gp))
7487 goto execve_efault;
7488 if (!addr)
7489 break;
7490 if (!(*q = lock_user_string(addr)))
7491 goto execve_efault;
7492 total_size += strlen(*q) + 1;
7493 }
7494 *q = NULL;
7495
7496 if (!(p = lock_user_string(arg1)))
7497 goto execve_efault;
7498 /* Although execve() is not an interruptible syscall it is
7499 * a special case where we must use the safe_syscall wrapper:
7500 * if we allow a signal to happen before we make the host
7501 * syscall then we will 'lose' it, because at the point of
7502 * execve the process leaves QEMU's control. So we use the
7503 * safe syscall wrapper to ensure that we either take the
7504 * signal as a guest signal, or else it does not happen
7505 * before the execve completes and makes it the other
7506 * program's problem.
7507 */
7508 ret = get_errno(safe_execve(p, argp, envp));
7509 unlock_user(p, arg1, 0);
7510
7511 goto execve_end;
7512
7513 execve_efault:
7514 ret = -TARGET_EFAULT;
7515
7516 execve_end:
7517 for (gp = guest_argp, q = argp; *q;
7518 gp += sizeof(abi_ulong), q++) {
7519 if (get_user_ual(addr, gp)
7520 || !addr)
7521 break;
7522 unlock_user(*q, addr, 0);
7523 }
7524 for (gp = guest_envp, q = envp; *q;
7525 gp += sizeof(abi_ulong), q++) {
7526 if (get_user_ual(addr, gp)
7527 || !addr)
7528 break;
7529 unlock_user(*q, addr, 0);
7530 }
7531
7532 g_free(argp);
7533 g_free(envp);
7534 }
7535 return ret;
7536 case TARGET_NR_chdir:
7537 if (!(p = lock_user_string(arg1)))
7538 return -TARGET_EFAULT;
7539 ret = get_errno(chdir(p));
7540 unlock_user(p, arg1, 0);
7541 return ret;
7542 #ifdef TARGET_NR_time
7543 case TARGET_NR_time:
7544 {
7545 time_t host_time;
7546 ret = get_errno(time(&host_time));
7547 if (!is_error(ret)
7548 && arg1
7549 && put_user_sal(host_time, arg1))
7550 return -TARGET_EFAULT;
7551 }
7552 return ret;
7553 #endif
7554 #ifdef TARGET_NR_mknod
7555 case TARGET_NR_mknod:
7556 if (!(p = lock_user_string(arg1)))
7557 return -TARGET_EFAULT;
7558 ret = get_errno(mknod(p, arg2, arg3));
7559 unlock_user(p, arg1, 0);
7560 return ret;
7561 #endif
7562 #if defined(TARGET_NR_mknodat)
7563 case TARGET_NR_mknodat:
7564 if (!(p = lock_user_string(arg2)))
7565 return -TARGET_EFAULT;
7566 ret = get_errno(mknodat(arg1, p, arg3, arg4));
7567 unlock_user(p, arg2, 0);
7568 return ret;
7569 #endif
7570 #ifdef TARGET_NR_chmod
7571 case TARGET_NR_chmod:
7572 if (!(p = lock_user_string(arg1)))
7573 return -TARGET_EFAULT;
7574 ret = get_errno(chmod(p, arg2));
7575 unlock_user(p, arg1, 0);
7576 return ret;
7577 #endif
7578 #ifdef TARGET_NR_lseek
7579 case TARGET_NR_lseek:
7580 return get_errno(lseek(arg1, arg2, arg3));
7581 #endif
7582 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
7583 /* Alpha specific */
7584 case TARGET_NR_getxpid:
7585 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
7586 return get_errno(getpid());
7587 #endif
7588 #ifdef TARGET_NR_getpid
7589 case TARGET_NR_getpid:
7590 return get_errno(getpid());
7591 #endif
7592 case TARGET_NR_mount:
7593 {
7594 /* need to look at the data field */
7595 void *p2, *p3;
7596
7597 if (arg1) {
7598 p = lock_user_string(arg1);
7599 if (!p) {
7600 return -TARGET_EFAULT;
7601 }
7602 } else {
7603 p = NULL;
7604 }
7605
7606 p2 = lock_user_string(arg2);
7607 if (!p2) {
7608 if (arg1) {
7609 unlock_user(p, arg1, 0);
7610 }
7611 return -TARGET_EFAULT;
7612 }
7613
7614 if (arg3) {
7615 p3 = lock_user_string(arg3);
7616 if (!p3) {
7617 if (arg1) {
7618 unlock_user(p, arg1, 0);
7619 }
7620 unlock_user(p2, arg2, 0);
7621 return -TARGET_EFAULT;
7622 }
7623 } else {
7624 p3 = NULL;
7625 }
7626
7627 /* FIXME - arg5 should be locked, but it isn't clear how to
7628 * do that since it's not guaranteed to be a NULL-terminated
7629 * string.
7630 */
7631 if (!arg5) {
7632 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
7633 } else {
7634 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
7635 }
7636 ret = get_errno(ret);
7637
7638 if (arg1) {
7639 unlock_user(p, arg1, 0);
7640 }
7641 unlock_user(p2, arg2, 0);
7642 if (arg3) {
7643 unlock_user(p3, arg3, 0);
7644 }
7645 }
7646 return ret;
7647 #ifdef TARGET_NR_umount
7648 case TARGET_NR_umount:
7649 if (!(p = lock_user_string(arg1)))
7650 return -TARGET_EFAULT;
7651 ret = get_errno(umount(p));
7652 unlock_user(p, arg1, 0);
7653 return ret;
7654 #endif
7655 #ifdef TARGET_NR_stime /* not on alpha */
7656 case TARGET_NR_stime:
7657 {
7658 time_t host_time;
7659 if (get_user_sal(host_time, arg1))
7660 return -TARGET_EFAULT;
7661 return get_errno(stime(&host_time));
7662 }
7663 #endif
7664 #ifdef TARGET_NR_alarm /* not on alpha */
7665 case TARGET_NR_alarm:
7666 return alarm(arg1);
7667 #endif
7668 #ifdef TARGET_NR_pause /* not on alpha */
7669 case TARGET_NR_pause:
7670 if (!block_signals()) {
7671 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
7672 }
7673 return -TARGET_EINTR;
7674 #endif
7675 #ifdef TARGET_NR_utime
7676 case TARGET_NR_utime:
7677 {
7678 struct utimbuf tbuf, *host_tbuf;
7679 struct target_utimbuf *target_tbuf;
7680 if (arg2) {
7681 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
7682 return -TARGET_EFAULT;
7683 tbuf.actime = tswapal(target_tbuf->actime);
7684 tbuf.modtime = tswapal(target_tbuf->modtime);
7685 unlock_user_struct(target_tbuf, arg2, 0);
7686 host_tbuf = &tbuf;
7687 } else {
7688 host_tbuf = NULL;
7689 }
7690 if (!(p = lock_user_string(arg1)))
7691 return -TARGET_EFAULT;
7692 ret = get_errno(utime(p, host_tbuf));
7693 unlock_user(p, arg1, 0);
7694 }
7695 return ret;
7696 #endif
7697 #ifdef TARGET_NR_utimes
7698 case TARGET_NR_utimes:
7699 {
7700 struct timeval *tvp, tv[2];
7701 if (arg2) {
7702 if (copy_from_user_timeval(&tv[0], arg2)
7703 || copy_from_user_timeval(&tv[1],
7704 arg2 + sizeof(struct target_timeval)))
7705 return -TARGET_EFAULT;
7706 tvp = tv;
7707 } else {
7708 tvp = NULL;
7709 }
7710 if (!(p = lock_user_string(arg1)))
7711 return -TARGET_EFAULT;
7712 ret = get_errno(utimes(p, tvp));
7713 unlock_user(p, arg1, 0);
7714 }
7715 return ret;
7716 #endif
7717 #if defined(TARGET_NR_futimesat)
7718 case TARGET_NR_futimesat:
7719 {
7720 struct timeval *tvp, tv[2];
7721 if (arg3) {
7722 if (copy_from_user_timeval(&tv[0], arg3)
7723 || copy_from_user_timeval(&tv[1],
7724 arg3 + sizeof(struct target_timeval)))
7725 return -TARGET_EFAULT;
7726 tvp = tv;
7727 } else {
7728 tvp = NULL;
7729 }
7730 if (!(p = lock_user_string(arg2))) {
7731 return -TARGET_EFAULT;
7732 }
7733 ret = get_errno(futimesat(arg1, path(p), tvp));
7734 unlock_user(p, arg2, 0);
7735 }
7736 return ret;
7737 #endif
7738 #ifdef TARGET_NR_access
7739 case TARGET_NR_access:
7740 if (!(p = lock_user_string(arg1))) {
7741 return -TARGET_EFAULT;
7742 }
7743 ret = get_errno(access(path(p), arg2));
7744 unlock_user(p, arg1, 0);
7745 return ret;
7746 #endif
7747 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
7748 case TARGET_NR_faccessat:
7749 if (!(p = lock_user_string(arg2))) {
7750 return -TARGET_EFAULT;
7751 }
7752 ret = get_errno(faccessat(arg1, p, arg3, 0));
7753 unlock_user(p, arg2, 0);
7754 return ret;
7755 #endif
7756 #ifdef TARGET_NR_nice /* not on alpha */
7757 case TARGET_NR_nice:
7758 return get_errno(nice(arg1));
7759 #endif
7760 case TARGET_NR_sync:
7761 sync();
7762 return 0;
7763 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
7764 case TARGET_NR_syncfs:
7765 return get_errno(syncfs(arg1));
7766 #endif
7767 case TARGET_NR_kill:
7768 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
7769 #ifdef TARGET_NR_rename
7770 case TARGET_NR_rename:
7771 {
7772 void *p2;
7773 p = lock_user_string(arg1);
7774 p2 = lock_user_string(arg2);
7775 if (!p || !p2)
7776 ret = -TARGET_EFAULT;
7777 else
7778 ret = get_errno(rename(p, p2));
7779 unlock_user(p2, arg2, 0);
7780 unlock_user(p, arg1, 0);
7781 }
7782 return ret;
7783 #endif
7784 #if defined(TARGET_NR_renameat)
7785 case TARGET_NR_renameat:
7786 {
7787 void *p2;
7788 p = lock_user_string(arg2);
7789 p2 = lock_user_string(arg4);
7790 if (!p || !p2)
7791 ret = -TARGET_EFAULT;
7792 else
7793 ret = get_errno(renameat(arg1, p, arg3, p2));
7794 unlock_user(p2, arg4, 0);
7795 unlock_user(p, arg2, 0);
7796 }
7797 return ret;
7798 #endif
7799 #if defined(TARGET_NR_renameat2)
7800 case TARGET_NR_renameat2:
7801 {
7802 void *p2;
7803 p = lock_user_string(arg2);
7804 p2 = lock_user_string(arg4);
7805 if (!p || !p2) {
7806 ret = -TARGET_EFAULT;
7807 } else {
7808 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
7809 }
7810 unlock_user(p2, arg4, 0);
7811 unlock_user(p, arg2, 0);
7812 }
7813 return ret;
7814 #endif
7815 #ifdef TARGET_NR_mkdir
7816 case TARGET_NR_mkdir:
7817 if (!(p = lock_user_string(arg1)))
7818 return -TARGET_EFAULT;
7819 ret = get_errno(mkdir(p, arg2));
7820 unlock_user(p, arg1, 0);
7821 return ret;
7822 #endif
7823 #if defined(TARGET_NR_mkdirat)
7824 case TARGET_NR_mkdirat:
7825 if (!(p = lock_user_string(arg2)))
7826 return -TARGET_EFAULT;
7827 ret = get_errno(mkdirat(arg1, p, arg3));
7828 unlock_user(p, arg2, 0);
7829 return ret;
7830 #endif
7831 #ifdef TARGET_NR_rmdir
7832 case TARGET_NR_rmdir:
7833 if (!(p = lock_user_string(arg1)))
7834 return -TARGET_EFAULT;
7835 ret = get_errno(rmdir(p));
7836 unlock_user(p, arg1, 0);
7837 return ret;
7838 #endif
7839 case TARGET_NR_dup:
7840 ret = get_errno(dup(arg1));
7841 if (ret >= 0) {
7842 fd_trans_dup(arg1, ret);
7843 }
7844 return ret;
7845 #ifdef TARGET_NR_pipe
7846 case TARGET_NR_pipe:
7847 return do_pipe(cpu_env, arg1, 0, 0);
7848 #endif
7849 #ifdef TARGET_NR_pipe2
7850 case TARGET_NR_pipe2:
7851 return do_pipe(cpu_env, arg1,
7852 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
7853 #endif
7854 case TARGET_NR_times:
7855 {
7856 struct target_tms *tmsp;
7857 struct tms tms;
7858 ret = get_errno(times(&tms));
7859 if (arg1) {
7860 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
7861 if (!tmsp)
7862 return -TARGET_EFAULT;
7863 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
7864 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
7865 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
7866 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
7867 }
7868 if (!is_error(ret))
7869 ret = host_to_target_clock_t(ret);
7870 }
7871 return ret;
7872 case TARGET_NR_acct:
7873 if (arg1 == 0) {
7874 ret = get_errno(acct(NULL));
7875 } else {
7876 if (!(p = lock_user_string(arg1))) {
7877 return -TARGET_EFAULT;
7878 }
7879 ret = get_errno(acct(path(p)));
7880 unlock_user(p, arg1, 0);
7881 }
7882 return ret;
7883 #ifdef TARGET_NR_umount2
7884 case TARGET_NR_umount2:
7885 if (!(p = lock_user_string(arg1)))
7886 return -TARGET_EFAULT;
7887 ret = get_errno(umount2(p, arg2));
7888 unlock_user(p, arg1, 0);
7889 return ret;
7890 #endif
7891 case TARGET_NR_ioctl:
7892 return do_ioctl(arg1, arg2, arg3);
7893 #ifdef TARGET_NR_fcntl
7894 case TARGET_NR_fcntl:
7895 return do_fcntl(arg1, arg2, arg3);
7896 #endif
7897 case TARGET_NR_setpgid:
7898 return get_errno(setpgid(arg1, arg2));
7899 case TARGET_NR_umask:
7900 return get_errno(umask(arg1));
7901 case TARGET_NR_chroot:
7902 if (!(p = lock_user_string(arg1)))
7903 return -TARGET_EFAULT;
7904 ret = get_errno(chroot(p));
7905 unlock_user(p, arg1, 0);
7906 return ret;
7907 #ifdef TARGET_NR_dup2
7908 case TARGET_NR_dup2:
7909 ret = get_errno(dup2(arg1, arg2));
7910 if (ret >= 0) {
7911 fd_trans_dup(arg1, arg2);
7912 }
7913 return ret;
7914 #endif
7915 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
7916 case TARGET_NR_dup3:
7917 {
7918 int host_flags;
7919
7920 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
7921 return -EINVAL;
7922 }
7923 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
7924 ret = get_errno(dup3(arg1, arg2, host_flags));
7925 if (ret >= 0) {
7926 fd_trans_dup(arg1, arg2);
7927 }
7928 return ret;
7929 }
7930 #endif
7931 #ifdef TARGET_NR_getppid /* not on alpha */
7932 case TARGET_NR_getppid:
7933 return get_errno(getppid());
7934 #endif
7935 #ifdef TARGET_NR_getpgrp
7936 case TARGET_NR_getpgrp:
7937 return get_errno(getpgrp());
7938 #endif
7939 case TARGET_NR_setsid:
7940 return get_errno(setsid());
7941 #ifdef TARGET_NR_sigaction
7942 case TARGET_NR_sigaction:
7943 {
7944 #if defined(TARGET_ALPHA)
7945 struct target_sigaction act, oact, *pact = 0;
7946 struct target_old_sigaction *old_act;
7947 if (arg2) {
7948 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7949 return -TARGET_EFAULT;
7950 act._sa_handler = old_act->_sa_handler;
7951 target_siginitset(&act.sa_mask, old_act->sa_mask);
7952 act.sa_flags = old_act->sa_flags;
7953 act.sa_restorer = 0;
7954 unlock_user_struct(old_act, arg2, 0);
7955 pact = &act;
7956 }
7957 ret = get_errno(do_sigaction(arg1, pact, &oact));
7958 if (!is_error(ret) && arg3) {
7959 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
7960 return -TARGET_EFAULT;
7961 old_act->_sa_handler = oact._sa_handler;
7962 old_act->sa_mask = oact.sa_mask.sig[0];
7963 old_act->sa_flags = oact.sa_flags;
7964 unlock_user_struct(old_act, arg3, 1);
7965 }
7966 #elif defined(TARGET_MIPS)
7967 struct target_sigaction act, oact, *pact, *old_act;
7968
7969 if (arg2) {
7970 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7971 return -TARGET_EFAULT;
7972 act._sa_handler = old_act->_sa_handler;
7973 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
7974 act.sa_flags = old_act->sa_flags;
7975 unlock_user_struct(old_act, arg2, 0);
7976 pact = &act;
7977 } else {
7978 pact = NULL;
7979 }
7980
7981 ret = get_errno(do_sigaction(arg1, pact, &oact));
7982
7983 if (!is_error(ret) && arg3) {
7984 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
7985 return -TARGET_EFAULT;
7986 old_act->_sa_handler = oact._sa_handler;
7987 old_act->sa_flags = oact.sa_flags;
7988 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
7989 old_act->sa_mask.sig[1] = 0;
7990 old_act->sa_mask.sig[2] = 0;
7991 old_act->sa_mask.sig[3] = 0;
7992 unlock_user_struct(old_act, arg3, 1);
7993 }
7994 #else
7995 struct target_old_sigaction *old_act;
7996 struct target_sigaction act, oact, *pact;
7997 if (arg2) {
7998 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7999 return -TARGET_EFAULT;
8000 act._sa_handler = old_act->_sa_handler;
8001 target_siginitset(&act.sa_mask, old_act->sa_mask);
8002 act.sa_flags = old_act->sa_flags;
8003 act.sa_restorer = old_act->sa_restorer;
8004 #ifdef TARGET_ARCH_HAS_KA_RESTORER
8005 act.ka_restorer = 0;
8006 #endif
8007 unlock_user_struct(old_act, arg2, 0);
8008 pact = &act;
8009 } else {
8010 pact = NULL;
8011 }
8012 ret = get_errno(do_sigaction(arg1, pact, &oact));
8013 if (!is_error(ret) && arg3) {
8014 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
8015 return -TARGET_EFAULT;
8016 old_act->_sa_handler = oact._sa_handler;
8017 old_act->sa_mask = oact.sa_mask.sig[0];
8018 old_act->sa_flags = oact.sa_flags;
8019 old_act->sa_restorer = oact.sa_restorer;
8020 unlock_user_struct(old_act, arg3, 1);
8021 }
8022 #endif
8023 }
8024 return ret;
8025 #endif
8026 case TARGET_NR_rt_sigaction:
8027 {
8028 #if defined(TARGET_ALPHA)
8029 /* For Alpha and SPARC this is a 5 argument syscall, with
8030 * a 'restorer' parameter which must be copied into the
8031 * sa_restorer field of the sigaction struct.
8032 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
8033 * and arg5 is the sigsetsize.
8034 * Alpha also has a separate rt_sigaction struct that it uses
8035 * here; SPARC uses the usual sigaction struct.
8036 */
8037 struct target_rt_sigaction *rt_act;
8038 struct target_sigaction act, oact, *pact = 0;
8039
8040 if (arg4 != sizeof(target_sigset_t)) {
8041 return -TARGET_EINVAL;
8042 }
8043 if (arg2) {
8044 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
8045 return -TARGET_EFAULT;
8046 act._sa_handler = rt_act->_sa_handler;
8047 act.sa_mask = rt_act->sa_mask;
8048 act.sa_flags = rt_act->sa_flags;
8049 act.sa_restorer = arg5;
8050 unlock_user_struct(rt_act, arg2, 0);
8051 pact = &act;
8052 }
8053 ret = get_errno(do_sigaction(arg1, pact, &oact));
8054 if (!is_error(ret) && arg3) {
8055 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
8056 return -TARGET_EFAULT;
8057 rt_act->_sa_handler = oact._sa_handler;
8058 rt_act->sa_mask = oact.sa_mask;
8059 rt_act->sa_flags = oact.sa_flags;
8060 unlock_user_struct(rt_act, arg3, 1);
8061 }
8062 #else
8063 #ifdef TARGET_SPARC
8064 target_ulong restorer = arg4;
8065 target_ulong sigsetsize = arg5;
8066 #else
8067 target_ulong sigsetsize = arg4;
8068 #endif
8069 struct target_sigaction *act;
8070 struct target_sigaction *oact;
8071
8072 if (sigsetsize != sizeof(target_sigset_t)) {
8073 return -TARGET_EINVAL;
8074 }
8075 if (arg2) {
8076 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
8077 return -TARGET_EFAULT;
8078 }
8079 #ifdef TARGET_ARCH_HAS_KA_RESTORER
8080 act->ka_restorer = restorer;
8081 #endif
8082 } else {
8083 act = NULL;
8084 }
8085 if (arg3) {
8086 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
8087 ret = -TARGET_EFAULT;
8088 goto rt_sigaction_fail;
8089 }
8090 } else
8091 oact = NULL;
8092 ret = get_errno(do_sigaction(arg1, act, oact));
8093 rt_sigaction_fail:
8094 if (act)
8095 unlock_user_struct(act, arg2, 0);
8096 if (oact)
8097 unlock_user_struct(oact, arg3, 1);
8098 #endif
8099 }
8100 return ret;
8101 #ifdef TARGET_NR_sgetmask /* not on alpha */
8102 case TARGET_NR_sgetmask:
8103 {
8104 sigset_t cur_set;
8105 abi_ulong target_set;
8106 ret = do_sigprocmask(0, NULL, &cur_set);
8107 if (!ret) {
8108 host_to_target_old_sigset(&target_set, &cur_set);
8109 ret = target_set;
8110 }
8111 }
8112 return ret;
8113 #endif
8114 #ifdef TARGET_NR_ssetmask /* not on alpha */
8115 case TARGET_NR_ssetmask:
8116 {
8117 sigset_t set, oset;
8118 abi_ulong target_set = arg1;
8119 target_to_host_old_sigset(&set, &target_set);
8120 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
8121 if (!ret) {
8122 host_to_target_old_sigset(&target_set, &oset);
8123 ret = target_set;
8124 }
8125 }
8126 return ret;
8127 #endif
8128 #ifdef TARGET_NR_sigprocmask
8129 case TARGET_NR_sigprocmask:
8130 {
8131 #if defined(TARGET_ALPHA)
8132 sigset_t set, oldset;
8133 abi_ulong mask;
8134 int how;
8135
8136 switch (arg1) {
8137 case TARGET_SIG_BLOCK:
8138 how = SIG_BLOCK;
8139 break;
8140 case TARGET_SIG_UNBLOCK:
8141 how = SIG_UNBLOCK;
8142 break;
8143 case TARGET_SIG_SETMASK:
8144 how = SIG_SETMASK;
8145 break;
8146 default:
8147 return -TARGET_EINVAL;
8148 }
8149 mask = arg2;
8150 target_to_host_old_sigset(&set, &mask);
8151
8152 ret = do_sigprocmask(how, &set, &oldset);
8153 if (!is_error(ret)) {
8154 host_to_target_old_sigset(&mask, &oldset);
8155 ret = mask;
8156 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
8157 }
8158 #else
8159 sigset_t set, oldset, *set_ptr;
8160 int how;
8161
8162 if (arg2) {
8163 switch (arg1) {
8164 case TARGET_SIG_BLOCK:
8165 how = SIG_BLOCK;
8166 break;
8167 case TARGET_SIG_UNBLOCK:
8168 how = SIG_UNBLOCK;
8169 break;
8170 case TARGET_SIG_SETMASK:
8171 how = SIG_SETMASK;
8172 break;
8173 default:
8174 return -TARGET_EINVAL;
8175 }
8176 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8177 return -TARGET_EFAULT;
8178 target_to_host_old_sigset(&set, p);
8179 unlock_user(p, arg2, 0);
8180 set_ptr = &set;
8181 } else {
8182 how = 0;
8183 set_ptr = NULL;
8184 }
8185 ret = do_sigprocmask(how, set_ptr, &oldset);
8186 if (!is_error(ret) && arg3) {
8187 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8188 return -TARGET_EFAULT;
8189 host_to_target_old_sigset(p, &oldset);
8190 unlock_user(p, arg3, sizeof(target_sigset_t));
8191 }
8192 #endif
8193 }
8194 return ret;
8195 #endif
8196 case TARGET_NR_rt_sigprocmask:
8197 {
8198 int how = arg1;
8199 sigset_t set, oldset, *set_ptr;
8200
8201 if (arg4 != sizeof(target_sigset_t)) {
8202 return -TARGET_EINVAL;
8203 }
8204
8205 if (arg2) {
8206 switch(how) {
8207 case TARGET_SIG_BLOCK:
8208 how = SIG_BLOCK;
8209 break;
8210 case TARGET_SIG_UNBLOCK:
8211 how = SIG_UNBLOCK;
8212 break;
8213 case TARGET_SIG_SETMASK:
8214 how = SIG_SETMASK;
8215 break;
8216 default:
8217 return -TARGET_EINVAL;
8218 }
8219 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
8220 return -TARGET_EFAULT;
8221 target_to_host_sigset(&set, p);
8222 unlock_user(p, arg2, 0);
8223 set_ptr = &set;
8224 } else {
8225 how = 0;
8226 set_ptr = NULL;
8227 }
8228 ret = do_sigprocmask(how, set_ptr, &oldset);
8229 if (!is_error(ret) && arg3) {
8230 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
8231 return -TARGET_EFAULT;
8232 host_to_target_sigset(p, &oldset);
8233 unlock_user(p, arg3, sizeof(target_sigset_t));
8234 }
8235 }
8236 return ret;
8237 #ifdef TARGET_NR_sigpending
8238 case TARGET_NR_sigpending:
8239 {
8240 sigset_t set;
8241 ret = get_errno(sigpending(&set));
8242 if (!is_error(ret)) {
8243 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8244 return -TARGET_EFAULT;
8245 host_to_target_old_sigset(p, &set);
8246 unlock_user(p, arg1, sizeof(target_sigset_t));
8247 }
8248 }
8249 return ret;
8250 #endif
8251 case TARGET_NR_rt_sigpending:
8252 {
8253 sigset_t set;
8254
8255 /* Yes, this check is >, not != like most. We follow the kernel's
8256 * logic and it does it like this because it implements
8257 * NR_sigpending through the same code path, and in that case
8258 * the old_sigset_t is smaller in size.
8259 */
8260 if (arg2 > sizeof(target_sigset_t)) {
8261 return -TARGET_EINVAL;
8262 }
8263
8264 ret = get_errno(sigpending(&set));
8265 if (!is_error(ret)) {
8266 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8267 return -TARGET_EFAULT;
8268 host_to_target_sigset(p, &set);
8269 unlock_user(p, arg1, sizeof(target_sigset_t));
8270 }
8271 }
8272 return ret;
8273 #ifdef TARGET_NR_sigsuspend
8274 case TARGET_NR_sigsuspend:
8275 {
8276 TaskState *ts = cpu->opaque;
8277 #if defined(TARGET_ALPHA)
8278 abi_ulong mask = arg1;
8279 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
8280 #else
8281 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8282 return -TARGET_EFAULT;
8283 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
8284 unlock_user(p, arg1, 0);
8285 #endif
8286 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8287 SIGSET_T_SIZE));
8288 if (ret != -TARGET_ERESTARTSYS) {
8289 ts->in_sigsuspend = 1;
8290 }
8291 }
8292 return ret;
8293 #endif
8294 case TARGET_NR_rt_sigsuspend:
8295 {
8296 TaskState *ts = cpu->opaque;
8297
8298 if (arg2 != sizeof(target_sigset_t)) {
8299 return -TARGET_EINVAL;
8300 }
8301 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8302 return -TARGET_EFAULT;
8303 target_to_host_sigset(&ts->sigsuspend_mask, p);
8304 unlock_user(p, arg1, 0);
8305 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8306 SIGSET_T_SIZE));
8307 if (ret != -TARGET_ERESTARTSYS) {
8308 ts->in_sigsuspend = 1;
8309 }
8310 }
8311 return ret;
8312 case TARGET_NR_rt_sigtimedwait:
8313 {
8314 sigset_t set;
8315 struct timespec uts, *puts;
8316 siginfo_t uinfo;
8317
8318 if (arg4 != sizeof(target_sigset_t)) {
8319 return -TARGET_EINVAL;
8320 }
8321
8322 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8323 return -TARGET_EFAULT;
8324 target_to_host_sigset(&set, p);
8325 unlock_user(p, arg1, 0);
8326 if (arg3) {
8327 puts = &uts;
8328 target_to_host_timespec(puts, arg3);
8329 } else {
8330 puts = NULL;
8331 }
8332 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
8333 SIGSET_T_SIZE));
8334 if (!is_error(ret)) {
8335 if (arg2) {
8336 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
8337 0);
8338 if (!p) {
8339 return -TARGET_EFAULT;
8340 }
8341 host_to_target_siginfo(p, &uinfo);
8342 unlock_user(p, arg2, sizeof(target_siginfo_t));
8343 }
8344 ret = host_to_target_signal(ret);
8345 }
8346 }
8347 return ret;
8348 case TARGET_NR_rt_sigqueueinfo:
8349 {
8350 siginfo_t uinfo;
8351
8352 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8353 if (!p) {
8354 return -TARGET_EFAULT;
8355 }
8356 target_to_host_siginfo(&uinfo, p);
8357 unlock_user(p, arg3, 0);
8358 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
8359 }
8360 return ret;
8361 case TARGET_NR_rt_tgsigqueueinfo:
8362 {
8363 siginfo_t uinfo;
8364
8365 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
8366 if (!p) {
8367 return -TARGET_EFAULT;
8368 }
8369 target_to_host_siginfo(&uinfo, p);
8370 unlock_user(p, arg4, 0);
8371 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
8372 }
8373 return ret;
8374 #ifdef TARGET_NR_sigreturn
8375 case TARGET_NR_sigreturn:
8376 if (block_signals()) {
8377 return -TARGET_ERESTARTSYS;
8378 }
8379 return do_sigreturn(cpu_env);
8380 #endif
8381 case TARGET_NR_rt_sigreturn:
8382 if (block_signals()) {
8383 return -TARGET_ERESTARTSYS;
8384 }
8385 return do_rt_sigreturn(cpu_env);
8386 case TARGET_NR_sethostname:
8387 if (!(p = lock_user_string(arg1)))
8388 return -TARGET_EFAULT;
8389 ret = get_errno(sethostname(p, arg2));
8390 unlock_user(p, arg1, 0);
8391 return ret;
8392 #ifdef TARGET_NR_setrlimit
8393 case TARGET_NR_setrlimit:
8394 {
8395 int resource = target_to_host_resource(arg1);
8396 struct target_rlimit *target_rlim;
8397 struct rlimit rlim;
8398 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
8399 return -TARGET_EFAULT;
8400 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
8401 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
8402 unlock_user_struct(target_rlim, arg2, 0);
8403 /*
8404 * If we just passed through resource limit settings for memory then
8405 * they would also apply to QEMU's own allocations, and QEMU will
8406 * crash or hang or die if its allocations fail. Ideally we would
8407 * track the guest allocations in QEMU and apply the limits ourselves.
8408 * For now, just tell the guest the call succeeded but don't actually
8409 * limit anything.
8410 */
8411 if (resource != RLIMIT_AS &&
8412 resource != RLIMIT_DATA &&
8413 resource != RLIMIT_STACK) {
8414 return get_errno(setrlimit(resource, &rlim));
8415 } else {
8416 return 0;
8417 }
8418 }
8419 #endif
8420 #ifdef TARGET_NR_getrlimit
8421 case TARGET_NR_getrlimit:
8422 {
8423 int resource = target_to_host_resource(arg1);
8424 struct target_rlimit *target_rlim;
8425 struct rlimit rlim;
8426
8427 ret = get_errno(getrlimit(resource, &rlim));
8428 if (!is_error(ret)) {
8429 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
8430 return -TARGET_EFAULT;
8431 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
8432 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
8433 unlock_user_struct(target_rlim, arg2, 1);
8434 }
8435 }
8436 return ret;
8437 #endif
8438 case TARGET_NR_getrusage:
8439 {
8440 struct rusage rusage;
8441 ret = get_errno(getrusage(arg1, &rusage));
8442 if (!is_error(ret)) {
8443 ret = host_to_target_rusage(arg2, &rusage);
8444 }
8445 }
8446 return ret;
8447 case TARGET_NR_gettimeofday:
8448 {
8449 struct timeval tv;
8450 ret = get_errno(gettimeofday(&tv, NULL));
8451 if (!is_error(ret)) {
8452 if (copy_to_user_timeval(arg1, &tv))
8453 return -TARGET_EFAULT;
8454 }
8455 }
8456 return ret;
8457 case TARGET_NR_settimeofday:
8458 {
8459 struct timeval tv, *ptv = NULL;
8460 struct timezone tz, *ptz = NULL;
8461
8462 if (arg1) {
8463 if (copy_from_user_timeval(&tv, arg1)) {
8464 return -TARGET_EFAULT;
8465 }
8466 ptv = &tv;
8467 }
8468
8469 if (arg2) {
8470 if (copy_from_user_timezone(&tz, arg2)) {
8471 return -TARGET_EFAULT;
8472 }
8473 ptz = &tz;
8474 }
8475
8476 return get_errno(settimeofday(ptv, ptz));
8477 }
8478 #if defined(TARGET_NR_select)
8479 case TARGET_NR_select:
8480 #if defined(TARGET_WANT_NI_OLD_SELECT)
8481 /* some architectures used to have old_select here
8482 * but now ENOSYS it.
8483 */
8484 ret = -TARGET_ENOSYS;
8485 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
8486 ret = do_old_select(arg1);
8487 #else
8488 ret = do_select(arg1, arg2, arg3, arg4, arg5);
8489 #endif
8490 return ret;
8491 #endif
8492 #ifdef TARGET_NR_pselect6
8493 case TARGET_NR_pselect6:
8494 {
8495 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
8496 fd_set rfds, wfds, efds;
8497 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
8498 struct timespec ts, *ts_ptr;
8499
8500 /*
8501 * The 6th arg is actually two args smashed together,
8502 * so we cannot use the C library.
8503 */
8504 sigset_t set;
8505 struct {
8506 sigset_t *set;
8507 size_t size;
8508 } sig, *sig_ptr;
8509
8510 abi_ulong arg_sigset, arg_sigsize, *arg7;
8511 target_sigset_t *target_sigset;
8512
8513 n = arg1;
8514 rfd_addr = arg2;
8515 wfd_addr = arg3;
8516 efd_addr = arg4;
8517 ts_addr = arg5;
8518
8519 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
8520 if (ret) {
8521 return ret;
8522 }
8523 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
8524 if (ret) {
8525 return ret;
8526 }
8527 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
8528 if (ret) {
8529 return ret;
8530 }
8531
8532 /*
8533 * This takes a timespec, and not a timeval, so we cannot
8534 * use the do_select() helper ...
8535 */
8536 if (ts_addr) {
8537 if (target_to_host_timespec(&ts, ts_addr)) {
8538 return -TARGET_EFAULT;
8539 }
8540 ts_ptr = &ts;
8541 } else {
8542 ts_ptr = NULL;
8543 }
8544
8545 /* Extract the two packed args for the sigset */
8546 if (arg6) {
8547 sig_ptr = &sig;
8548 sig.size = SIGSET_T_SIZE;
8549
8550 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
8551 if (!arg7) {
8552 return -TARGET_EFAULT;
8553 }
8554 arg_sigset = tswapal(arg7[0]);
8555 arg_sigsize = tswapal(arg7[1]);
8556 unlock_user(arg7, arg6, 0);
8557
8558 if (arg_sigset) {
8559 sig.set = &set;
8560 if (arg_sigsize != sizeof(*target_sigset)) {
8561 /* Like the kernel, we enforce correct size sigsets */
8562 return -TARGET_EINVAL;
8563 }
8564 target_sigset = lock_user(VERIFY_READ, arg_sigset,
8565 sizeof(*target_sigset), 1);
8566 if (!target_sigset) {
8567 return -TARGET_EFAULT;
8568 }
8569 target_to_host_sigset(&set, target_sigset);
8570 unlock_user(target_sigset, arg_sigset, 0);
8571 } else {
8572 sig.set = NULL;
8573 }
8574 } else {
8575 sig_ptr = NULL;
8576 }
8577
8578 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
8579 ts_ptr, sig_ptr));
8580
8581 if (!is_error(ret)) {
8582 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
8583 return -TARGET_EFAULT;
8584 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
8585 return -TARGET_EFAULT;
8586 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
8587 return -TARGET_EFAULT;
8588
8589 if (ts_addr && host_to_target_timespec(ts_addr, &ts))
8590 return -TARGET_EFAULT;
8591 }
8592 }
8593 return ret;
8594 #endif
8595 #ifdef TARGET_NR_symlink
8596 case TARGET_NR_symlink:
8597 {
8598 void *p2;
8599 p = lock_user_string(arg1);
8600 p2 = lock_user_string(arg2);
8601 if (!p || !p2)
8602 ret = -TARGET_EFAULT;
8603 else
8604 ret = get_errno(symlink(p, p2));
8605 unlock_user(p2, arg2, 0);
8606 unlock_user(p, arg1, 0);
8607 }
8608 return ret;
8609 #endif
8610 #if defined(TARGET_NR_symlinkat)
8611 case TARGET_NR_symlinkat:
8612 {
8613 void *p2;
8614 p = lock_user_string(arg1);
8615 p2 = lock_user_string(arg3);
8616 if (!p || !p2)
8617 ret = -TARGET_EFAULT;
8618 else
8619 ret = get_errno(symlinkat(p, arg2, p2));
8620 unlock_user(p2, arg3, 0);
8621 unlock_user(p, arg1, 0);
8622 }
8623 return ret;
8624 #endif
8625 #ifdef TARGET_NR_readlink
8626 case TARGET_NR_readlink:
8627 {
8628 void *p2;
8629 p = lock_user_string(arg1);
8630 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
8631 if (!p || !p2) {
8632 ret = -TARGET_EFAULT;
8633 } else if (!arg3) {
8634 /* Short circuit this for the magic exe check. */
8635 ret = -TARGET_EINVAL;
8636 } else if (is_proc_myself((const char *)p, "exe")) {
8637 char real[PATH_MAX], *temp;
8638 temp = realpath(exec_path, real);
8639 /* Return value is # of bytes that we wrote to the buffer. */
8640 if (temp == NULL) {
8641 ret = get_errno(-1);
8642 } else {
8643 /* Don't worry about sign mismatch as earlier mapping
8644 * logic would have thrown a bad address error. */
8645 ret = MIN(strlen(real), arg3);
8646 /* We cannot NUL terminate the string. */
8647 memcpy(p2, real, ret);
8648 }
8649 } else {
8650 ret = get_errno(readlink(path(p), p2, arg3));
8651 }
8652 unlock_user(p2, arg2, ret);
8653 unlock_user(p, arg1, 0);
8654 }
8655 return ret;
8656 #endif
8657 #if defined(TARGET_NR_readlinkat)
8658 case TARGET_NR_readlinkat:
8659 {
8660 void *p2;
8661 p = lock_user_string(arg2);
8662 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
8663 if (!p || !p2) {
8664 ret = -TARGET_EFAULT;
8665 } else if (is_proc_myself((const char *)p, "exe")) {
8666 char real[PATH_MAX], *temp;
8667 temp = realpath(exec_path, real);
8668 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
8669 snprintf((char *)p2, arg4, "%s", real);
8670 } else {
8671 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
8672 }
8673 unlock_user(p2, arg3, ret);
8674 unlock_user(p, arg2, 0);
8675 }
8676 return ret;
8677 #endif
8678 #ifdef TARGET_NR_swapon
8679 case TARGET_NR_swapon:
8680 if (!(p = lock_user_string(arg1)))
8681 return -TARGET_EFAULT;
8682 ret = get_errno(swapon(p, arg2));
8683 unlock_user(p, arg1, 0);
8684 return ret;
8685 #endif
8686 case TARGET_NR_reboot:
8687 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
8688 /* arg4 must be ignored in all other cases */
8689 p = lock_user_string(arg4);
8690 if (!p) {
8691 return -TARGET_EFAULT;
8692 }
8693 ret = get_errno(reboot(arg1, arg2, arg3, p));
8694 unlock_user(p, arg4, 0);
8695 } else {
8696 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
8697 }
8698 return ret;
8699 #ifdef TARGET_NR_mmap
8700 case TARGET_NR_mmap:
8701 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
8702 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
8703 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
8704 || defined(TARGET_S390X)
8705 {
8706 abi_ulong *v;
8707 abi_ulong v1, v2, v3, v4, v5, v6;
8708 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
8709 return -TARGET_EFAULT;
8710 v1 = tswapal(v[0]);
8711 v2 = tswapal(v[1]);
8712 v3 = tswapal(v[2]);
8713 v4 = tswapal(v[3]);
8714 v5 = tswapal(v[4]);
8715 v6 = tswapal(v[5]);
8716 unlock_user(v, arg1, 0);
8717 ret = get_errno(target_mmap(v1, v2, v3,
8718 target_to_host_bitmask(v4, mmap_flags_tbl),
8719 v5, v6));
8720 }
8721 #else
8722 ret = get_errno(target_mmap(arg1, arg2, arg3,
8723 target_to_host_bitmask(arg4, mmap_flags_tbl),
8724 arg5,
8725 arg6));
8726 #endif
8727 return ret;
8728 #endif
8729 #ifdef TARGET_NR_mmap2
8730 case TARGET_NR_mmap2:
8731 #ifndef MMAP_SHIFT
8732 #define MMAP_SHIFT 12
8733 #endif
8734 ret = target_mmap(arg1, arg2, arg3,
8735 target_to_host_bitmask(arg4, mmap_flags_tbl),
8736 arg5, arg6 << MMAP_SHIFT);
8737 return get_errno(ret);
8738 #endif
8739 case TARGET_NR_munmap:
8740 return get_errno(target_munmap(arg1, arg2));
8741 case TARGET_NR_mprotect:
8742 {
8743 TaskState *ts = cpu->opaque;
8744 /* Special hack to detect libc making the stack executable. */
8745 if ((arg3 & PROT_GROWSDOWN)
8746 && arg1 >= ts->info->stack_limit
8747 && arg1 <= ts->info->start_stack) {
8748 arg3 &= ~PROT_GROWSDOWN;
8749 arg2 = arg2 + arg1 - ts->info->stack_limit;
8750 arg1 = ts->info->stack_limit;
8751 }
8752 }
8753 return get_errno(target_mprotect(arg1, arg2, arg3));
8754 #ifdef TARGET_NR_mremap
8755 case TARGET_NR_mremap:
8756 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
8757 #endif
8758 /* ??? msync/mlock/munlock are broken for softmmu. */
8759 #ifdef TARGET_NR_msync
8760 case TARGET_NR_msync:
8761 return get_errno(msync(g2h(arg1), arg2, arg3));
8762 #endif
8763 #ifdef TARGET_NR_mlock
8764 case TARGET_NR_mlock:
8765 return get_errno(mlock(g2h(arg1), arg2));
8766 #endif
8767 #ifdef TARGET_NR_munlock
8768 case TARGET_NR_munlock:
8769 return get_errno(munlock(g2h(arg1), arg2));
8770 #endif
8771 #ifdef TARGET_NR_mlockall
8772 case TARGET_NR_mlockall:
8773 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
8774 #endif
8775 #ifdef TARGET_NR_munlockall
8776 case TARGET_NR_munlockall:
8777 return get_errno(munlockall());
8778 #endif
8779 #ifdef TARGET_NR_truncate
8780 case TARGET_NR_truncate:
8781 if (!(p = lock_user_string(arg1)))
8782 return -TARGET_EFAULT;
8783 ret = get_errno(truncate(p, arg2));
8784 unlock_user(p, arg1, 0);
8785 return ret;
8786 #endif
8787 #ifdef TARGET_NR_ftruncate
8788 case TARGET_NR_ftruncate:
8789 return get_errno(ftruncate(arg1, arg2));
8790 #endif
8791 case TARGET_NR_fchmod:
8792 return get_errno(fchmod(arg1, arg2));
8793 #if defined(TARGET_NR_fchmodat)
8794 case TARGET_NR_fchmodat:
8795 if (!(p = lock_user_string(arg2)))
8796 return -TARGET_EFAULT;
8797 ret = get_errno(fchmodat(arg1, p, arg3, 0));
8798 unlock_user(p, arg2, 0);
8799 return ret;
8800 #endif
8801 case TARGET_NR_getpriority:
8802 /* Note that negative values are valid for getpriority, so we must
8803 differentiate based on errno settings. */
8804 errno = 0;
8805 ret = getpriority(arg1, arg2);
8806 if (ret == -1 && errno != 0) {
8807 return -host_to_target_errno(errno);
8808 }
8809 #ifdef TARGET_ALPHA
8810 /* Return value is the unbiased priority. Signal no error. */
8811 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
8812 #else
8813 /* Return value is a biased priority to avoid negative numbers. */
8814 ret = 20 - ret;
8815 #endif
8816 return ret;
8817 case TARGET_NR_setpriority:
8818 return get_errno(setpriority(arg1, arg2, arg3));
8819 #ifdef TARGET_NR_statfs
8820 case TARGET_NR_statfs:
8821 if (!(p = lock_user_string(arg1))) {
8822 return -TARGET_EFAULT;
8823 }
8824 ret = get_errno(statfs(path(p), &stfs));
8825 unlock_user(p, arg1, 0);
8826 convert_statfs:
8827 if (!is_error(ret)) {
8828 struct target_statfs *target_stfs;
8829
8830 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
8831 return -TARGET_EFAULT;
8832 __put_user(stfs.f_type, &target_stfs->f_type);
8833 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
8834 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
8835 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
8836 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
8837 __put_user(stfs.f_files, &target_stfs->f_files);
8838 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
8839 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
8840 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
8841 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
8842 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
8843 #ifdef _STATFS_F_FLAGS
8844 __put_user(stfs.f_flags, &target_stfs->f_flags);
8845 #else
8846 __put_user(0, &target_stfs->f_flags);
8847 #endif
8848 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
8849 unlock_user_struct(target_stfs, arg2, 1);
8850 }
8851 return ret;
8852 #endif
8853 #ifdef TARGET_NR_fstatfs
8854 case TARGET_NR_fstatfs:
8855 ret = get_errno(fstatfs(arg1, &stfs));
8856 goto convert_statfs;
8857 #endif
8858 #ifdef TARGET_NR_statfs64
8859 case TARGET_NR_statfs64:
8860 if (!(p = lock_user_string(arg1))) {
8861 return -TARGET_EFAULT;
8862 }
8863 ret = get_errno(statfs(path(p), &stfs));
8864 unlock_user(p, arg1, 0);
8865 convert_statfs64:
8866 if (!is_error(ret)) {
8867 struct target_statfs64 *target_stfs;
8868
8869 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
8870 return -TARGET_EFAULT;
8871 __put_user(stfs.f_type, &target_stfs->f_type);
8872 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
8873 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
8874 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
8875 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
8876 __put_user(stfs.f_files, &target_stfs->f_files);
8877 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
8878 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
8879 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
8880 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
8881 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
8882 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
8883 unlock_user_struct(target_stfs, arg3, 1);
8884 }
8885 return ret;
8886 case TARGET_NR_fstatfs64:
8887 ret = get_errno(fstatfs(arg1, &stfs));
8888 goto convert_statfs64;
8889 #endif
8890 #ifdef TARGET_NR_socketcall
8891 case TARGET_NR_socketcall:
8892 return do_socketcall(arg1, arg2);
8893 #endif
8894 #ifdef TARGET_NR_accept
8895 case TARGET_NR_accept:
8896 return do_accept4(arg1, arg2, arg3, 0);
8897 #endif
8898 #ifdef TARGET_NR_accept4
8899 case TARGET_NR_accept4:
8900 return do_accept4(arg1, arg2, arg3, arg4);
8901 #endif
8902 #ifdef TARGET_NR_bind
8903 case TARGET_NR_bind:
8904 return do_bind(arg1, arg2, arg3);
8905 #endif
8906 #ifdef TARGET_NR_connect
8907 case TARGET_NR_connect:
8908 return do_connect(arg1, arg2, arg3);
8909 #endif
8910 #ifdef TARGET_NR_getpeername
8911 case TARGET_NR_getpeername:
8912 return do_getpeername(arg1, arg2, arg3);
8913 #endif
8914 #ifdef TARGET_NR_getsockname
8915 case TARGET_NR_getsockname:
8916 return do_getsockname(arg1, arg2, arg3);
8917 #endif
8918 #ifdef TARGET_NR_getsockopt
8919 case TARGET_NR_getsockopt:
8920 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
8921 #endif
8922 #ifdef TARGET_NR_listen
8923 case TARGET_NR_listen:
8924 return get_errno(listen(arg1, arg2));
8925 #endif
8926 #ifdef TARGET_NR_recv
8927 case TARGET_NR_recv:
8928 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
8929 #endif
8930 #ifdef TARGET_NR_recvfrom
8931 case TARGET_NR_recvfrom:
8932 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
8933 #endif
8934 #ifdef TARGET_NR_recvmsg
8935 case TARGET_NR_recvmsg:
8936 return do_sendrecvmsg(arg1, arg2, arg3, 0);
8937 #endif
8938 #ifdef TARGET_NR_send
8939 case TARGET_NR_send:
8940 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
8941 #endif
8942 #ifdef TARGET_NR_sendmsg
8943 case TARGET_NR_sendmsg:
8944 return do_sendrecvmsg(arg1, arg2, arg3, 1);
8945 #endif
8946 #ifdef TARGET_NR_sendmmsg
8947 case TARGET_NR_sendmmsg:
8948 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
8949 case TARGET_NR_recvmmsg:
8950 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
8951 #endif
8952 #ifdef TARGET_NR_sendto
8953 case TARGET_NR_sendto:
8954 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
8955 #endif
8956 #ifdef TARGET_NR_shutdown
8957 case TARGET_NR_shutdown:
8958 return get_errno(shutdown(arg1, arg2));
8959 #endif
8960 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
8961 case TARGET_NR_getrandom:
8962 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
8963 if (!p) {
8964 return -TARGET_EFAULT;
8965 }
8966 ret = get_errno(getrandom(p, arg2, arg3));
8967 unlock_user(p, arg1, ret);
8968 return ret;
8969 #endif
8970 #ifdef TARGET_NR_socket
8971 case TARGET_NR_socket:
8972 return do_socket(arg1, arg2, arg3);
8973 #endif
8974 #ifdef TARGET_NR_socketpair
8975 case TARGET_NR_socketpair:
8976 return do_socketpair(arg1, arg2, arg3, arg4);
8977 #endif
8978 #ifdef TARGET_NR_setsockopt
8979 case TARGET_NR_setsockopt:
8980 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
8981 #endif
8982 #if defined(TARGET_NR_syslog)
8983 case TARGET_NR_syslog:
8984 {
8985 int len = arg2;
8986
8987 switch (arg1) {
8988 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
8989 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
8990 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
8991 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
8992 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
8993 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
8994 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
8995 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
8996 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
8997 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
8998 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
8999 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
9000 {
9001 if (len < 0) {
9002 return -TARGET_EINVAL;
9003 }
9004 if (len == 0) {
9005 return 0;
9006 }
9007 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9008 if (!p) {
9009 return -TARGET_EFAULT;
9010 }
9011 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
9012 unlock_user(p, arg2, arg3);
9013 }
9014 return ret;
9015 default:
9016 return -TARGET_EINVAL;
9017 }
9018 }
9019 break;
9020 #endif
9021 case TARGET_NR_setitimer:
9022 {
9023 struct itimerval value, ovalue, *pvalue;
9024
9025 if (arg2) {
9026 pvalue = &value;
9027 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
9028 || copy_from_user_timeval(&pvalue->it_value,
9029 arg2 + sizeof(struct target_timeval)))
9030 return -TARGET_EFAULT;
9031 } else {
9032 pvalue = NULL;
9033 }
9034 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
9035 if (!is_error(ret) && arg3) {
9036 if (copy_to_user_timeval(arg3,
9037 &ovalue.it_interval)
9038 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
9039 &ovalue.it_value))
9040 return -TARGET_EFAULT;
9041 }
9042 }
9043 return ret;
9044 case TARGET_NR_getitimer:
9045 {
9046 struct itimerval value;
9047
9048 ret = get_errno(getitimer(arg1, &value));
9049 if (!is_error(ret) && arg2) {
9050 if (copy_to_user_timeval(arg2,
9051 &value.it_interval)
9052 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
9053 &value.it_value))
9054 return -TARGET_EFAULT;
9055 }
9056 }
9057 return ret;
9058 #ifdef TARGET_NR_stat
9059 case TARGET_NR_stat:
9060 if (!(p = lock_user_string(arg1))) {
9061 return -TARGET_EFAULT;
9062 }
9063 ret = get_errno(stat(path(p), &st));
9064 unlock_user(p, arg1, 0);
9065 goto do_stat;
9066 #endif
9067 #ifdef TARGET_NR_lstat
9068 case TARGET_NR_lstat:
9069 if (!(p = lock_user_string(arg1))) {
9070 return -TARGET_EFAULT;
9071 }
9072 ret = get_errno(lstat(path(p), &st));
9073 unlock_user(p, arg1, 0);
9074 goto do_stat;
9075 #endif
9076 #ifdef TARGET_NR_fstat
9077 case TARGET_NR_fstat:
9078 {
9079 ret = get_errno(fstat(arg1, &st));
9080 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
9081 do_stat:
9082 #endif
9083 if (!is_error(ret)) {
9084 struct target_stat *target_st;
9085
9086 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
9087 return -TARGET_EFAULT;
9088 memset(target_st, 0, sizeof(*target_st));
9089 __put_user(st.st_dev, &target_st->st_dev);
9090 __put_user(st.st_ino, &target_st->st_ino);
9091 __put_user(st.st_mode, &target_st->st_mode);
9092 __put_user(st.st_uid, &target_st->st_uid);
9093 __put_user(st.st_gid, &target_st->st_gid);
9094 __put_user(st.st_nlink, &target_st->st_nlink);
9095 __put_user(st.st_rdev, &target_st->st_rdev);
9096 __put_user(st.st_size, &target_st->st_size);
9097 __put_user(st.st_blksize, &target_st->st_blksize);
9098 __put_user(st.st_blocks, &target_st->st_blocks);
9099 __put_user(st.st_atime, &target_st->target_st_atime);
9100 __put_user(st.st_mtime, &target_st->target_st_mtime);
9101 __put_user(st.st_ctime, &target_st->target_st_ctime);
9102 #if (_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700) && \
9103 defined(TARGET_STAT_HAVE_NSEC)
9104 __put_user(st.st_atim.tv_nsec,
9105 &target_st->target_st_atime_nsec);
9106 __put_user(st.st_mtim.tv_nsec,
9107 &target_st->target_st_mtime_nsec);
9108 __put_user(st.st_ctim.tv_nsec,
9109 &target_st->target_st_ctime_nsec);
9110 #endif
9111 unlock_user_struct(target_st, arg2, 1);
9112 }
9113 }
9114 return ret;
9115 #endif
9116 case TARGET_NR_vhangup:
9117 return get_errno(vhangup());
9118 #ifdef TARGET_NR_syscall
9119 case TARGET_NR_syscall:
9120 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
9121 arg6, arg7, arg8, 0);
9122 #endif
9123 case TARGET_NR_wait4:
9124 {
9125 int status;
9126 abi_long status_ptr = arg2;
9127 struct rusage rusage, *rusage_ptr;
9128 abi_ulong target_rusage = arg4;
9129 abi_long rusage_err;
9130 if (target_rusage)
9131 rusage_ptr = &rusage;
9132 else
9133 rusage_ptr = NULL;
9134 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
9135 if (!is_error(ret)) {
9136 if (status_ptr && ret) {
9137 status = host_to_target_waitstatus(status);
9138 if (put_user_s32(status, status_ptr))
9139 return -TARGET_EFAULT;
9140 }
9141 if (target_rusage) {
9142 rusage_err = host_to_target_rusage(target_rusage, &rusage);
9143 if (rusage_err) {
9144 ret = rusage_err;
9145 }
9146 }
9147 }
9148 }
9149 return ret;
9150 #ifdef TARGET_NR_swapoff
9151 case TARGET_NR_swapoff:
9152 if (!(p = lock_user_string(arg1)))
9153 return -TARGET_EFAULT;
9154 ret = get_errno(swapoff(p));
9155 unlock_user(p, arg1, 0);
9156 return ret;
9157 #endif
9158 case TARGET_NR_sysinfo:
9159 {
9160 struct target_sysinfo *target_value;
9161 struct sysinfo value;
9162 ret = get_errno(sysinfo(&value));
9163 if (!is_error(ret) && arg1)
9164 {
9165 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
9166 return -TARGET_EFAULT;
9167 __put_user(value.uptime, &target_value->uptime);
9168 __put_user(value.loads[0], &target_value->loads[0]);
9169 __put_user(value.loads[1], &target_value->loads[1]);
9170 __put_user(value.loads[2], &target_value->loads[2]);
9171 __put_user(value.totalram, &target_value->totalram);
9172 __put_user(value.freeram, &target_value->freeram);
9173 __put_user(value.sharedram, &target_value->sharedram);
9174 __put_user(value.bufferram, &target_value->bufferram);
9175 __put_user(value.totalswap, &target_value->totalswap);
9176 __put_user(value.freeswap, &target_value->freeswap);
9177 __put_user(value.procs, &target_value->procs);
9178 __put_user(value.totalhigh, &target_value->totalhigh);
9179 __put_user(value.freehigh, &target_value->freehigh);
9180 __put_user(value.mem_unit, &target_value->mem_unit);
9181 unlock_user_struct(target_value, arg1, 1);
9182 }
9183 }
9184 return ret;
9185 #ifdef TARGET_NR_ipc
9186 case TARGET_NR_ipc:
9187 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
9188 #endif
9189 #ifdef TARGET_NR_semget
9190 case TARGET_NR_semget:
9191 return get_errno(semget(arg1, arg2, arg3));
9192 #endif
9193 #ifdef TARGET_NR_semop
9194 case TARGET_NR_semop:
9195 return do_semop(arg1, arg2, arg3);
9196 #endif
9197 #ifdef TARGET_NR_semctl
9198 case TARGET_NR_semctl:
9199 return do_semctl(arg1, arg2, arg3, arg4);
9200 #endif
9201 #ifdef TARGET_NR_msgctl
9202 case TARGET_NR_msgctl:
9203 return do_msgctl(arg1, arg2, arg3);
9204 #endif
9205 #ifdef TARGET_NR_msgget
9206 case TARGET_NR_msgget:
9207 return get_errno(msgget(arg1, arg2));
9208 #endif
9209 #ifdef TARGET_NR_msgrcv
9210 case TARGET_NR_msgrcv:
9211 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
9212 #endif
9213 #ifdef TARGET_NR_msgsnd
9214 case TARGET_NR_msgsnd:
9215 return do_msgsnd(arg1, arg2, arg3, arg4);
9216 #endif
9217 #ifdef TARGET_NR_shmget
9218 case TARGET_NR_shmget:
9219 return get_errno(shmget(arg1, arg2, arg3));
9220 #endif
9221 #ifdef TARGET_NR_shmctl
9222 case TARGET_NR_shmctl:
9223 return do_shmctl(arg1, arg2, arg3);
9224 #endif
9225 #ifdef TARGET_NR_shmat
9226 case TARGET_NR_shmat:
9227 return do_shmat(cpu_env, arg1, arg2, arg3);
9228 #endif
9229 #ifdef TARGET_NR_shmdt
9230 case TARGET_NR_shmdt:
9231 return do_shmdt(arg1);
9232 #endif
9233 case TARGET_NR_fsync:
9234 return get_errno(fsync(arg1));
9235 case TARGET_NR_clone:
9236 /* Linux manages to have three different orderings for its
9237 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
9238 * match the kernel's CONFIG_CLONE_* settings.
9239 * Microblaze is further special in that it uses a sixth
9240 * implicit argument to clone for the TLS pointer.
9241 */
9242 #if defined(TARGET_MICROBLAZE)
9243 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
9244 #elif defined(TARGET_CLONE_BACKWARDS)
9245 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
9246 #elif defined(TARGET_CLONE_BACKWARDS2)
9247 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
9248 #else
9249 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
9250 #endif
9251 return ret;
9252 #ifdef __NR_exit_group
9253 /* new thread calls */
9254 case TARGET_NR_exit_group:
9255 preexit_cleanup(cpu_env, arg1);
9256 return get_errno(exit_group(arg1));
9257 #endif
9258 case TARGET_NR_setdomainname:
9259 if (!(p = lock_user_string(arg1)))
9260 return -TARGET_EFAULT;
9261 ret = get_errno(setdomainname(p, arg2));
9262 unlock_user(p, arg1, 0);
9263 return ret;
9264 case TARGET_NR_uname:
9265 /* no need to transcode because we use the linux syscall */
9266 {
9267 struct new_utsname * buf;
9268
9269 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
9270 return -TARGET_EFAULT;
9271 ret = get_errno(sys_uname(buf));
9272 if (!is_error(ret)) {
9273 /* Overwrite the native machine name with whatever is being
9274 emulated. */
9275 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
9276 sizeof(buf->machine));
9277 /* Allow the user to override the reported release. */
9278 if (qemu_uname_release && *qemu_uname_release) {
9279 g_strlcpy(buf->release, qemu_uname_release,
9280 sizeof(buf->release));
9281 }
9282 }
9283 unlock_user_struct(buf, arg1, 1);
9284 }
9285 return ret;
9286 #ifdef TARGET_I386
9287 case TARGET_NR_modify_ldt:
9288 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
9289 #if !defined(TARGET_X86_64)
9290 case TARGET_NR_vm86:
9291 return do_vm86(cpu_env, arg1, arg2);
9292 #endif
9293 #endif
9294 case TARGET_NR_adjtimex:
9295 {
9296 struct timex host_buf;
9297
9298 if (target_to_host_timex(&host_buf, arg1) != 0) {
9299 return -TARGET_EFAULT;
9300 }
9301 ret = get_errno(adjtimex(&host_buf));
9302 if (!is_error(ret)) {
9303 if (host_to_target_timex(arg1, &host_buf) != 0) {
9304 return -TARGET_EFAULT;
9305 }
9306 }
9307 }
9308 return ret;
9309 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
9310 case TARGET_NR_clock_adjtime:
9311 {
9312 struct timex htx, *phtx = &htx;
9313
9314 if (target_to_host_timex(phtx, arg2) != 0) {
9315 return -TARGET_EFAULT;
9316 }
9317 ret = get_errno(clock_adjtime(arg1, phtx));
9318 if (!is_error(ret) && phtx) {
9319 if (host_to_target_timex(arg2, phtx) != 0) {
9320 return -TARGET_EFAULT;
9321 }
9322 }
9323 }
9324 return ret;
9325 #endif
9326 case TARGET_NR_getpgid:
9327 return get_errno(getpgid(arg1));
9328 case TARGET_NR_fchdir:
9329 return get_errno(fchdir(arg1));
9330 case TARGET_NR_personality:
9331 return get_errno(personality(arg1));
9332 #ifdef TARGET_NR__llseek /* Not on alpha */
9333 case TARGET_NR__llseek:
9334 {
9335 int64_t res;
9336 #if !defined(__NR_llseek)
9337 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
9338 if (res == -1) {
9339 ret = get_errno(res);
9340 } else {
9341 ret = 0;
9342 }
9343 #else
9344 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
9345 #endif
9346 if ((ret == 0) && put_user_s64(res, arg4)) {
9347 return -TARGET_EFAULT;
9348 }
9349 }
9350 return ret;
9351 #endif
9352 #ifdef TARGET_NR_getdents
9353 case TARGET_NR_getdents:
9354 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
9355 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
9356 {
9357 struct target_dirent *target_dirp;
9358 struct linux_dirent *dirp;
9359 abi_long count = arg3;
9360
9361 dirp = g_try_malloc(count);
9362 if (!dirp) {
9363 return -TARGET_ENOMEM;
9364 }
9365
9366 ret = get_errno(sys_getdents(arg1, dirp, count));
9367 if (!is_error(ret)) {
9368 struct linux_dirent *de;
9369 struct target_dirent *tde;
9370 int len = ret;
9371 int reclen, treclen;
9372 int count1, tnamelen;
9373
9374 count1 = 0;
9375 de = dirp;
9376 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9377 return -TARGET_EFAULT;
9378 tde = target_dirp;
9379 while (len > 0) {
9380 reclen = de->d_reclen;
9381 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
9382 assert(tnamelen >= 0);
9383 treclen = tnamelen + offsetof(struct target_dirent, d_name);
9384 assert(count1 + treclen <= count);
9385 tde->d_reclen = tswap16(treclen);
9386 tde->d_ino = tswapal(de->d_ino);
9387 tde->d_off = tswapal(de->d_off);
9388 memcpy(tde->d_name, de->d_name, tnamelen);
9389 de = (struct linux_dirent *)((char *)de + reclen);
9390 len -= reclen;
9391 tde = (struct target_dirent *)((char *)tde + treclen);
9392 count1 += treclen;
9393 }
9394 ret = count1;
9395 unlock_user(target_dirp, arg2, ret);
9396 }
9397 g_free(dirp);
9398 }
9399 #else
9400 {
9401 struct linux_dirent *dirp;
9402 abi_long count = arg3;
9403
9404 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9405 return -TARGET_EFAULT;
9406 ret = get_errno(sys_getdents(arg1, dirp, count));
9407 if (!is_error(ret)) {
9408 struct linux_dirent *de;
9409 int len = ret;
9410 int reclen;
9411 de = dirp;
9412 while (len > 0) {
9413 reclen = de->d_reclen;
9414 if (reclen > len)
9415 break;
9416 de->d_reclen = tswap16(reclen);
9417 tswapls(&de->d_ino);
9418 tswapls(&de->d_off);
9419 de = (struct linux_dirent *)((char *)de + reclen);
9420 len -= reclen;
9421 }
9422 }
9423 unlock_user(dirp, arg2, ret);
9424 }
9425 #endif
9426 #else
9427 /* Implement getdents in terms of getdents64 */
9428 {
9429 struct linux_dirent64 *dirp;
9430 abi_long count = arg3;
9431
9432 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
9433 if (!dirp) {
9434 return -TARGET_EFAULT;
9435 }
9436 ret = get_errno(sys_getdents64(arg1, dirp, count));
9437 if (!is_error(ret)) {
9438 /* Convert the dirent64 structs to target dirent. We do this
9439 * in-place, since we can guarantee that a target_dirent is no
9440 * larger than a dirent64; however this means we have to be
9441 * careful to read everything before writing in the new format.
9442 */
9443 struct linux_dirent64 *de;
9444 struct target_dirent *tde;
9445 int len = ret;
9446 int tlen = 0;
9447
9448 de = dirp;
9449 tde = (struct target_dirent *)dirp;
9450 while (len > 0) {
9451 int namelen, treclen;
9452 int reclen = de->d_reclen;
9453 uint64_t ino = de->d_ino;
9454 int64_t off = de->d_off;
9455 uint8_t type = de->d_type;
9456
9457 namelen = strlen(de->d_name);
9458 treclen = offsetof(struct target_dirent, d_name)
9459 + namelen + 2;
9460 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
9461
9462 memmove(tde->d_name, de->d_name, namelen + 1);
9463 tde->d_ino = tswapal(ino);
9464 tde->d_off = tswapal(off);
9465 tde->d_reclen = tswap16(treclen);
9466 /* The target_dirent type is in what was formerly a padding
9467 * byte at the end of the structure:
9468 */
9469 *(((char *)tde) + treclen - 1) = type;
9470
9471 de = (struct linux_dirent64 *)((char *)de + reclen);
9472 tde = (struct target_dirent *)((char *)tde + treclen);
9473 len -= reclen;
9474 tlen += treclen;
9475 }
9476 ret = tlen;
9477 }
9478 unlock_user(dirp, arg2, ret);
9479 }
9480 #endif
9481 return ret;
9482 #endif /* TARGET_NR_getdents */
9483 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
9484 case TARGET_NR_getdents64:
9485 {
9486 struct linux_dirent64 *dirp;
9487 abi_long count = arg3;
9488 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9489 return -TARGET_EFAULT;
9490 ret = get_errno(sys_getdents64(arg1, dirp, count));
9491 if (!is_error(ret)) {
9492 struct linux_dirent64 *de;
9493 int len = ret;
9494 int reclen;
9495 de = dirp;
9496 while (len > 0) {
9497 reclen = de->d_reclen;
9498 if (reclen > len)
9499 break;
9500 de->d_reclen = tswap16(reclen);
9501 tswap64s((uint64_t *)&de->d_ino);
9502 tswap64s((uint64_t *)&de->d_off);
9503 de = (struct linux_dirent64 *)((char *)de + reclen);
9504 len -= reclen;
9505 }
9506 }
9507 unlock_user(dirp, arg2, ret);
9508 }
9509 return ret;
9510 #endif /* TARGET_NR_getdents64 */
9511 #if defined(TARGET_NR__newselect)
9512 case TARGET_NR__newselect:
9513 return do_select(arg1, arg2, arg3, arg4, arg5);
9514 #endif
9515 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll)
9516 # ifdef TARGET_NR_poll
9517 case TARGET_NR_poll:
9518 # endif
9519 # ifdef TARGET_NR_ppoll
9520 case TARGET_NR_ppoll:
9521 # endif
9522 {
9523 struct target_pollfd *target_pfd;
9524 unsigned int nfds = arg2;
9525 struct pollfd *pfd;
9526 unsigned int i;
9527
9528 pfd = NULL;
9529 target_pfd = NULL;
9530 if (nfds) {
9531 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
9532 return -TARGET_EINVAL;
9533 }
9534
9535 target_pfd = lock_user(VERIFY_WRITE, arg1,
9536 sizeof(struct target_pollfd) * nfds, 1);
9537 if (!target_pfd) {
9538 return -TARGET_EFAULT;
9539 }
9540
9541 pfd = alloca(sizeof(struct pollfd) * nfds);
9542 for (i = 0; i < nfds; i++) {
9543 pfd[i].fd = tswap32(target_pfd[i].fd);
9544 pfd[i].events = tswap16(target_pfd[i].events);
9545 }
9546 }
9547
9548 switch (num) {
9549 # ifdef TARGET_NR_ppoll
9550 case TARGET_NR_ppoll:
9551 {
9552 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
9553 target_sigset_t *target_set;
9554 sigset_t _set, *set = &_set;
9555
9556 if (arg3) {
9557 if (target_to_host_timespec(timeout_ts, arg3)) {
9558 unlock_user(target_pfd, arg1, 0);
9559 return -TARGET_EFAULT;
9560 }
9561 } else {
9562 timeout_ts = NULL;
9563 }
9564
9565 if (arg4) {
9566 if (arg5 != sizeof(target_sigset_t)) {
9567 unlock_user(target_pfd, arg1, 0);
9568 return -TARGET_EINVAL;
9569 }
9570
9571 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1);
9572 if (!target_set) {
9573 unlock_user(target_pfd, arg1, 0);
9574 return -TARGET_EFAULT;
9575 }
9576 target_to_host_sigset(set, target_set);
9577 } else {
9578 set = NULL;
9579 }
9580
9581 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
9582 set, SIGSET_T_SIZE));
9583
9584 if (!is_error(ret) && arg3) {
9585 host_to_target_timespec(arg3, timeout_ts);
9586 }
9587 if (arg4) {
9588 unlock_user(target_set, arg4, 0);
9589 }
9590 break;
9591 }
9592 # endif
9593 # ifdef TARGET_NR_poll
9594 case TARGET_NR_poll:
9595 {
9596 struct timespec ts, *pts;
9597
9598 if (arg3 >= 0) {
9599 /* Convert ms to secs, ns */
9600 ts.tv_sec = arg3 / 1000;
9601 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
9602 pts = &ts;
9603 } else {
9604 /* -ve poll() timeout means "infinite" */
9605 pts = NULL;
9606 }
9607 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
9608 break;
9609 }
9610 # endif
9611 default:
9612 g_assert_not_reached();
9613 }
9614
9615 if (!is_error(ret)) {
9616 for(i = 0; i < nfds; i++) {
9617 target_pfd[i].revents = tswap16(pfd[i].revents);
9618 }
9619 }
9620 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
9621 }
9622 return ret;
9623 #endif
9624 case TARGET_NR_flock:
9625 /* NOTE: the flock constant seems to be the same for every
9626 Linux platform */
9627 return get_errno(safe_flock(arg1, arg2));
9628 case TARGET_NR_readv:
9629 {
9630 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
9631 if (vec != NULL) {
9632 ret = get_errno(safe_readv(arg1, vec, arg3));
9633 unlock_iovec(vec, arg2, arg3, 1);
9634 } else {
9635 ret = -host_to_target_errno(errno);
9636 }
9637 }
9638 return ret;
9639 case TARGET_NR_writev:
9640 {
9641 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
9642 if (vec != NULL) {
9643 ret = get_errno(safe_writev(arg1, vec, arg3));
9644 unlock_iovec(vec, arg2, arg3, 0);
9645 } else {
9646 ret = -host_to_target_errno(errno);
9647 }
9648 }
9649 return ret;
9650 #if defined(TARGET_NR_preadv)
9651 case TARGET_NR_preadv:
9652 {
9653 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
9654 if (vec != NULL) {
9655 unsigned long low, high;
9656
9657 target_to_host_low_high(arg4, arg5, &low, &high);
9658 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
9659 unlock_iovec(vec, arg2, arg3, 1);
9660 } else {
9661 ret = -host_to_target_errno(errno);
9662 }
9663 }
9664 return ret;
9665 #endif
9666 #if defined(TARGET_NR_pwritev)
9667 case TARGET_NR_pwritev:
9668 {
9669 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
9670 if (vec != NULL) {
9671 unsigned long low, high;
9672
9673 target_to_host_low_high(arg4, arg5, &low, &high);
9674 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
9675 unlock_iovec(vec, arg2, arg3, 0);
9676 } else {
9677 ret = -host_to_target_errno(errno);
9678 }
9679 }
9680 return ret;
9681 #endif
9682 case TARGET_NR_getsid:
9683 return get_errno(getsid(arg1));
9684 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
9685 case TARGET_NR_fdatasync:
9686 return get_errno(fdatasync(arg1));
9687 #endif
9688 #ifdef TARGET_NR__sysctl
9689 case TARGET_NR__sysctl:
9690 /* We don't implement this, but ENOTDIR is always a safe
9691 return value. */
9692 return -TARGET_ENOTDIR;
9693 #endif
9694 case TARGET_NR_sched_getaffinity:
9695 {
9696 unsigned int mask_size;
9697 unsigned long *mask;
9698
9699 /*
9700 * sched_getaffinity needs multiples of ulong, so need to take
9701 * care of mismatches between target ulong and host ulong sizes.
9702 */
9703 if (arg2 & (sizeof(abi_ulong) - 1)) {
9704 return -TARGET_EINVAL;
9705 }
9706 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
9707
9708 mask = alloca(mask_size);
9709 memset(mask, 0, mask_size);
9710 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
9711
9712 if (!is_error(ret)) {
9713 if (ret > arg2) {
9714 /* More data returned than the caller's buffer will fit.
9715 * This only happens if sizeof(abi_long) < sizeof(long)
9716 * and the caller passed us a buffer holding an odd number
9717 * of abi_longs. If the host kernel is actually using the
9718 * extra 4 bytes then fail EINVAL; otherwise we can just
9719 * ignore them and only copy the interesting part.
9720 */
9721 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
9722 if (numcpus > arg2 * 8) {
9723 return -TARGET_EINVAL;
9724 }
9725 ret = arg2;
9726 }
9727
9728 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
9729 return -TARGET_EFAULT;
9730 }
9731 }
9732 }
9733 return ret;
9734 case TARGET_NR_sched_setaffinity:
9735 {
9736 unsigned int mask_size;
9737 unsigned long *mask;
9738
9739 /*
9740 * sched_setaffinity needs multiples of ulong, so need to take
9741 * care of mismatches between target ulong and host ulong sizes.
9742 */
9743 if (arg2 & (sizeof(abi_ulong) - 1)) {
9744 return -TARGET_EINVAL;
9745 }
9746 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
9747 mask = alloca(mask_size);
9748
9749 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
9750 if (ret) {
9751 return ret;
9752 }
9753
9754 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
9755 }
9756 case TARGET_NR_getcpu:
9757 {
9758 unsigned cpu, node;
9759 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
9760 arg2 ? &node : NULL,
9761 NULL));
9762 if (is_error(ret)) {
9763 return ret;
9764 }
9765 if (arg1 && put_user_u32(cpu, arg1)) {
9766 return -TARGET_EFAULT;
9767 }
9768 if (arg2 && put_user_u32(node, arg2)) {
9769 return -TARGET_EFAULT;
9770 }
9771 }
9772 return ret;
9773 case TARGET_NR_sched_setparam:
9774 {
9775 struct sched_param *target_schp;
9776 struct sched_param schp;
9777
9778 if (arg2 == 0) {
9779 return -TARGET_EINVAL;
9780 }
9781 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
9782 return -TARGET_EFAULT;
9783 schp.sched_priority = tswap32(target_schp->sched_priority);
9784 unlock_user_struct(target_schp, arg2, 0);
9785 return get_errno(sched_setparam(arg1, &schp));
9786 }
9787 case TARGET_NR_sched_getparam:
9788 {
9789 struct sched_param *target_schp;
9790 struct sched_param schp;
9791
9792 if (arg2 == 0) {
9793 return -TARGET_EINVAL;
9794 }
9795 ret = get_errno(sched_getparam(arg1, &schp));
9796 if (!is_error(ret)) {
9797 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
9798 return -TARGET_EFAULT;
9799 target_schp->sched_priority = tswap32(schp.sched_priority);
9800 unlock_user_struct(target_schp, arg2, 1);
9801 }
9802 }
9803 return ret;
9804 case TARGET_NR_sched_setscheduler:
9805 {
9806 struct sched_param *target_schp;
9807 struct sched_param schp;
9808 if (arg3 == 0) {
9809 return -TARGET_EINVAL;
9810 }
9811 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
9812 return -TARGET_EFAULT;
9813 schp.sched_priority = tswap32(target_schp->sched_priority);
9814 unlock_user_struct(target_schp, arg3, 0);
9815 return get_errno(sched_setscheduler(arg1, arg2, &schp));
9816 }
9817 case TARGET_NR_sched_getscheduler:
9818 return get_errno(sched_getscheduler(arg1));
9819 case TARGET_NR_sched_yield:
9820 return get_errno(sched_yield());
9821 case TARGET_NR_sched_get_priority_max:
9822 return get_errno(sched_get_priority_max(arg1));
9823 case TARGET_NR_sched_get_priority_min:
9824 return get_errno(sched_get_priority_min(arg1));
9825 case TARGET_NR_sched_rr_get_interval:
9826 {
9827 struct timespec ts;
9828 ret = get_errno(sched_rr_get_interval(arg1, &ts));
9829 if (!is_error(ret)) {
9830 ret = host_to_target_timespec(arg2, &ts);
9831 }
9832 }
9833 return ret;
9834 case TARGET_NR_nanosleep:
9835 {
9836 struct timespec req, rem;
9837 target_to_host_timespec(&req, arg1);
9838 ret = get_errno(safe_nanosleep(&req, &rem));
9839 if (is_error(ret) && arg2) {
9840 host_to_target_timespec(arg2, &rem);
9841 }
9842 }
9843 return ret;
9844 case TARGET_NR_prctl:
9845 switch (arg1) {
9846 case PR_GET_PDEATHSIG:
9847 {
9848 int deathsig;
9849 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
9850 if (!is_error(ret) && arg2
9851 && put_user_ual(deathsig, arg2)) {
9852 return -TARGET_EFAULT;
9853 }
9854 return ret;
9855 }
9856 #ifdef PR_GET_NAME
9857 case PR_GET_NAME:
9858 {
9859 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
9860 if (!name) {
9861 return -TARGET_EFAULT;
9862 }
9863 ret = get_errno(prctl(arg1, (unsigned long)name,
9864 arg3, arg4, arg5));
9865 unlock_user(name, arg2, 16);
9866 return ret;
9867 }
9868 case PR_SET_NAME:
9869 {
9870 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
9871 if (!name) {
9872 return -TARGET_EFAULT;
9873 }
9874 ret = get_errno(prctl(arg1, (unsigned long)name,
9875 arg3, arg4, arg5));
9876 unlock_user(name, arg2, 0);
9877 return ret;
9878 }
9879 #endif
9880 #ifdef TARGET_MIPS
9881 case TARGET_PR_GET_FP_MODE:
9882 {
9883 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
9884 ret = 0;
9885 if (env->CP0_Status & (1 << CP0St_FR)) {
9886 ret |= TARGET_PR_FP_MODE_FR;
9887 }
9888 if (env->CP0_Config5 & (1 << CP0C5_FRE)) {
9889 ret |= TARGET_PR_FP_MODE_FRE;
9890 }
9891 return ret;
9892 }
9893 case TARGET_PR_SET_FP_MODE:
9894 {
9895 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
9896 bool old_fr = env->CP0_Status & (1 << CP0St_FR);
9897 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE);
9898 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR;
9899 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE;
9900
9901 const unsigned int known_bits = TARGET_PR_FP_MODE_FR |
9902 TARGET_PR_FP_MODE_FRE;
9903
9904 /* If nothing to change, return right away, successfully. */
9905 if (old_fr == new_fr && old_fre == new_fre) {
9906 return 0;
9907 }
9908 /* Check the value is valid */
9909 if (arg2 & ~known_bits) {
9910 return -TARGET_EOPNOTSUPP;
9911 }
9912 /* Setting FRE without FR is not supported. */
9913 if (new_fre && !new_fr) {
9914 return -TARGET_EOPNOTSUPP;
9915 }
9916 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) {
9917 /* FR1 is not supported */
9918 return -TARGET_EOPNOTSUPP;
9919 }
9920 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64))
9921 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) {
9922 /* cannot set FR=0 */
9923 return -TARGET_EOPNOTSUPP;
9924 }
9925 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) {
9926 /* Cannot set FRE=1 */
9927 return -TARGET_EOPNOTSUPP;
9928 }
9929
9930 int i;
9931 fpr_t *fpr = env->active_fpu.fpr;
9932 for (i = 0; i < 32 ; i += 2) {
9933 if (!old_fr && new_fr) {
9934 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX];
9935 } else if (old_fr && !new_fr) {
9936 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX];
9937 }
9938 }
9939
9940 if (new_fr) {
9941 env->CP0_Status |= (1 << CP0St_FR);
9942 env->hflags |= MIPS_HFLAG_F64;
9943 } else {
9944 env->CP0_Status &= ~(1 << CP0St_FR);
9945 env->hflags &= ~MIPS_HFLAG_F64;
9946 }
9947 if (new_fre) {
9948 env->CP0_Config5 |= (1 << CP0C5_FRE);
9949 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) {
9950 env->hflags |= MIPS_HFLAG_FRE;
9951 }
9952 } else {
9953 env->CP0_Config5 &= ~(1 << CP0C5_FRE);
9954 env->hflags &= ~MIPS_HFLAG_FRE;
9955 }
9956
9957 return 0;
9958 }
9959 #endif /* MIPS */
9960 #ifdef TARGET_AARCH64
9961 case TARGET_PR_SVE_SET_VL:
9962 /*
9963 * We cannot support either PR_SVE_SET_VL_ONEXEC or
9964 * PR_SVE_VL_INHERIT. Note the kernel definition
9965 * of sve_vl_valid allows for VQ=512, i.e. VL=8192,
9966 * even though the current architectural maximum is VQ=16.
9967 */
9968 ret = -TARGET_EINVAL;
9969 if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env))
9970 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
9971 CPUARMState *env = cpu_env;
9972 ARMCPU *cpu = env_archcpu(env);
9973 uint32_t vq, old_vq;
9974
9975 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1;
9976 vq = MAX(arg2 / 16, 1);
9977 vq = MIN(vq, cpu->sve_max_vq);
9978
9979 if (vq < old_vq) {
9980 aarch64_sve_narrow_vq(env, vq);
9981 }
9982 env->vfp.zcr_el[1] = vq - 1;
9983 ret = vq * 16;
9984 }
9985 return ret;
9986 case TARGET_PR_SVE_GET_VL:
9987 ret = -TARGET_EINVAL;
9988 {
9989 ARMCPU *cpu = env_archcpu(cpu_env);
9990 if (cpu_isar_feature(aa64_sve, cpu)) {
9991 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16;
9992 }
9993 }
9994 return ret;
9995 case TARGET_PR_PAC_RESET_KEYS:
9996 {
9997 CPUARMState *env = cpu_env;
9998 ARMCPU *cpu = env_archcpu(env);
9999
10000 if (arg3 || arg4 || arg5) {
10001 return -TARGET_EINVAL;
10002 }
10003 if (cpu_isar_feature(aa64_pauth, cpu)) {
10004 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY |
10005 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY |
10006 TARGET_PR_PAC_APGAKEY);
10007 int ret = 0;
10008 Error *err = NULL;
10009
10010 if (arg2 == 0) {
10011 arg2 = all;
10012 } else if (arg2 & ~all) {
10013 return -TARGET_EINVAL;
10014 }
10015 if (arg2 & TARGET_PR_PAC_APIAKEY) {
10016 ret |= qemu_guest_getrandom(&env->keys.apia,
10017 sizeof(ARMPACKey), &err);
10018 }
10019 if (arg2 & TARGET_PR_PAC_APIBKEY) {
10020 ret |= qemu_guest_getrandom(&env->keys.apib,
10021 sizeof(ARMPACKey), &err);
10022 }
10023 if (arg2 & TARGET_PR_PAC_APDAKEY) {
10024 ret |= qemu_guest_getrandom(&env->keys.apda,
10025 sizeof(ARMPACKey), &err);
10026 }
10027 if (arg2 & TARGET_PR_PAC_APDBKEY) {
10028 ret |= qemu_guest_getrandom(&env->keys.apdb,
10029 sizeof(ARMPACKey), &err);
10030 }
10031 if (arg2 & TARGET_PR_PAC_APGAKEY) {
10032 ret |= qemu_guest_getrandom(&env->keys.apga,
10033 sizeof(ARMPACKey), &err);
10034 }
10035 if (ret != 0) {
10036 /*
10037 * Some unknown failure in the crypto. The best
10038 * we can do is log it and fail the syscall.
10039 * The real syscall cannot fail this way.
10040 */
10041 qemu_log_mask(LOG_UNIMP,
10042 "PR_PAC_RESET_KEYS: Crypto failure: %s",
10043 error_get_pretty(err));
10044 error_free(err);
10045 return -TARGET_EIO;
10046 }
10047 return 0;
10048 }
10049 }
10050 return -TARGET_EINVAL;
10051 #endif /* AARCH64 */
10052 case PR_GET_SECCOMP:
10053 case PR_SET_SECCOMP:
10054 /* Disable seccomp to prevent the target disabling syscalls we
10055 * need. */
10056 return -TARGET_EINVAL;
10057 default:
10058 /* Most prctl options have no pointer arguments */
10059 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
10060 }
10061 break;
10062 #ifdef TARGET_NR_arch_prctl
10063 case TARGET_NR_arch_prctl:
10064 #if defined(TARGET_I386) && !defined(TARGET_ABI32)
10065 return do_arch_prctl(cpu_env, arg1, arg2);
10066 #else
10067 #error unreachable
10068 #endif
10069 #endif
10070 #ifdef TARGET_NR_pread64
10071 case TARGET_NR_pread64:
10072 if (regpairs_aligned(cpu_env, num)) {
10073 arg4 = arg5;
10074 arg5 = arg6;
10075 }
10076 if (arg2 == 0 && arg3 == 0) {
10077 /* Special-case NULL buffer and zero length, which should succeed */
10078 p = 0;
10079 } else {
10080 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10081 if (!p) {
10082 return -TARGET_EFAULT;
10083 }
10084 }
10085 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
10086 unlock_user(p, arg2, ret);
10087 return ret;
10088 case TARGET_NR_pwrite64:
10089 if (regpairs_aligned(cpu_env, num)) {
10090 arg4 = arg5;
10091 arg5 = arg6;
10092 }
10093 if (arg2 == 0 && arg3 == 0) {
10094 /* Special-case NULL buffer and zero length, which should succeed */
10095 p = 0;
10096 } else {
10097 p = lock_user(VERIFY_READ, arg2, arg3, 1);
10098 if (!p) {
10099 return -TARGET_EFAULT;
10100 }
10101 }
10102 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
10103 unlock_user(p, arg2, 0);
10104 return ret;
10105 #endif
10106 case TARGET_NR_getcwd:
10107 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
10108 return -TARGET_EFAULT;
10109 ret = get_errno(sys_getcwd1(p, arg2));
10110 unlock_user(p, arg1, ret);
10111 return ret;
10112 case TARGET_NR_capget:
10113 case TARGET_NR_capset:
10114 {
10115 struct target_user_cap_header *target_header;
10116 struct target_user_cap_data *target_data = NULL;
10117 struct __user_cap_header_struct header;
10118 struct __user_cap_data_struct data[2];
10119 struct __user_cap_data_struct *dataptr = NULL;
10120 int i, target_datalen;
10121 int data_items = 1;
10122
10123 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
10124 return -TARGET_EFAULT;
10125 }
10126 header.version = tswap32(target_header->version);
10127 header.pid = tswap32(target_header->pid);
10128
10129 if (header.version != _LINUX_CAPABILITY_VERSION) {
10130 /* Version 2 and up takes pointer to two user_data structs */
10131 data_items = 2;
10132 }
10133
10134 target_datalen = sizeof(*target_data) * data_items;
10135
10136 if (arg2) {
10137 if (num == TARGET_NR_capget) {
10138 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
10139 } else {
10140 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
10141 }
10142 if (!target_data) {
10143 unlock_user_struct(target_header, arg1, 0);
10144 return -TARGET_EFAULT;
10145 }
10146
10147 if (num == TARGET_NR_capset) {
10148 for (i = 0; i < data_items; i++) {
10149 data[i].effective = tswap32(target_data[i].effective);
10150 data[i].permitted = tswap32(target_data[i].permitted);
10151 data[i].inheritable = tswap32(target_data[i].inheritable);
10152 }
10153 }
10154
10155 dataptr = data;
10156 }
10157
10158 if (num == TARGET_NR_capget) {
10159 ret = get_errno(capget(&header, dataptr));
10160 } else {
10161 ret = get_errno(capset(&header, dataptr));
10162 }
10163
10164 /* The kernel always updates version for both capget and capset */
10165 target_header->version = tswap32(header.version);
10166 unlock_user_struct(target_header, arg1, 1);
10167
10168 if (arg2) {
10169 if (num == TARGET_NR_capget) {
10170 for (i = 0; i < data_items; i++) {
10171 target_data[i].effective = tswap32(data[i].effective);
10172 target_data[i].permitted = tswap32(data[i].permitted);
10173 target_data[i].inheritable = tswap32(data[i].inheritable);
10174 }
10175 unlock_user(target_data, arg2, target_datalen);
10176 } else {
10177 unlock_user(target_data, arg2, 0);
10178 }
10179 }
10180 return ret;
10181 }
10182 case TARGET_NR_sigaltstack:
10183 return do_sigaltstack(arg1, arg2,
10184 get_sp_from_cpustate((CPUArchState *)cpu_env));
10185
10186 #ifdef CONFIG_SENDFILE
10187 #ifdef TARGET_NR_sendfile
10188 case TARGET_NR_sendfile:
10189 {
10190 off_t *offp = NULL;
10191 off_t off;
10192 if (arg3) {
10193 ret = get_user_sal(off, arg3);
10194 if (is_error(ret)) {
10195 return ret;
10196 }
10197 offp = &off;
10198 }
10199 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10200 if (!is_error(ret) && arg3) {
10201 abi_long ret2 = put_user_sal(off, arg3);
10202 if (is_error(ret2)) {
10203 ret = ret2;
10204 }
10205 }
10206 return ret;
10207 }
10208 #endif
10209 #ifdef TARGET_NR_sendfile64
10210 case TARGET_NR_sendfile64:
10211 {
10212 off_t *offp = NULL;
10213 off_t off;
10214 if (arg3) {
10215 ret = get_user_s64(off, arg3);
10216 if (is_error(ret)) {
10217 return ret;
10218 }
10219 offp = &off;
10220 }
10221 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
10222 if (!is_error(ret) && arg3) {
10223 abi_long ret2 = put_user_s64(off, arg3);
10224 if (is_error(ret2)) {
10225 ret = ret2;
10226 }
10227 }
10228 return ret;
10229 }
10230 #endif
10231 #endif
10232 #ifdef TARGET_NR_vfork
10233 case TARGET_NR_vfork:
10234 return get_errno(do_fork(cpu_env,
10235 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
10236 0, 0, 0, 0));
10237 #endif
10238 #ifdef TARGET_NR_ugetrlimit
10239 case TARGET_NR_ugetrlimit:
10240 {
10241 struct rlimit rlim;
10242 int resource = target_to_host_resource(arg1);
10243 ret = get_errno(getrlimit(resource, &rlim));
10244 if (!is_error(ret)) {
10245 struct target_rlimit *target_rlim;
10246 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
10247 return -TARGET_EFAULT;
10248 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
10249 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
10250 unlock_user_struct(target_rlim, arg2, 1);
10251 }
10252 return ret;
10253 }
10254 #endif
10255 #ifdef TARGET_NR_truncate64
10256 case TARGET_NR_truncate64:
10257 if (!(p = lock_user_string(arg1)))
10258 return -TARGET_EFAULT;
10259 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
10260 unlock_user(p, arg1, 0);
10261 return ret;
10262 #endif
10263 #ifdef TARGET_NR_ftruncate64
10264 case TARGET_NR_ftruncate64:
10265 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
10266 #endif
10267 #ifdef TARGET_NR_stat64
10268 case TARGET_NR_stat64:
10269 if (!(p = lock_user_string(arg1))) {
10270 return -TARGET_EFAULT;
10271 }
10272 ret = get_errno(stat(path(p), &st));
10273 unlock_user(p, arg1, 0);
10274 if (!is_error(ret))
10275 ret = host_to_target_stat64(cpu_env, arg2, &st);
10276 return ret;
10277 #endif
10278 #ifdef TARGET_NR_lstat64
10279 case TARGET_NR_lstat64:
10280 if (!(p = lock_user_string(arg1))) {
10281 return -TARGET_EFAULT;
10282 }
10283 ret = get_errno(lstat(path(p), &st));
10284 unlock_user(p, arg1, 0);
10285 if (!is_error(ret))
10286 ret = host_to_target_stat64(cpu_env, arg2, &st);
10287 return ret;
10288 #endif
10289 #ifdef TARGET_NR_fstat64
10290 case TARGET_NR_fstat64:
10291 ret = get_errno(fstat(arg1, &st));
10292 if (!is_error(ret))
10293 ret = host_to_target_stat64(cpu_env, arg2, &st);
10294 return ret;
10295 #endif
10296 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
10297 #ifdef TARGET_NR_fstatat64
10298 case TARGET_NR_fstatat64:
10299 #endif
10300 #ifdef TARGET_NR_newfstatat
10301 case TARGET_NR_newfstatat:
10302 #endif
10303 if (!(p = lock_user_string(arg2))) {
10304 return -TARGET_EFAULT;
10305 }
10306 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
10307 unlock_user(p, arg2, 0);
10308 if (!is_error(ret))
10309 ret = host_to_target_stat64(cpu_env, arg3, &st);
10310 return ret;
10311 #endif
10312 #if defined(TARGET_NR_statx)
10313 case TARGET_NR_statx:
10314 {
10315 struct target_statx *target_stx;
10316 int dirfd = arg1;
10317 int flags = arg3;
10318
10319 p = lock_user_string(arg2);
10320 if (p == NULL) {
10321 return -TARGET_EFAULT;
10322 }
10323 #if defined(__NR_statx)
10324 {
10325 /*
10326 * It is assumed that struct statx is architecture independent.
10327 */
10328 struct target_statx host_stx;
10329 int mask = arg4;
10330
10331 ret = get_errno(sys_statx(dirfd, p, flags, mask, &host_stx));
10332 if (!is_error(ret)) {
10333 if (host_to_target_statx(&host_stx, arg5) != 0) {
10334 unlock_user(p, arg2, 0);
10335 return -TARGET_EFAULT;
10336 }
10337 }
10338
10339 if (ret != -TARGET_ENOSYS) {
10340 unlock_user(p, arg2, 0);
10341 return ret;
10342 }
10343 }
10344 #endif
10345 ret = get_errno(fstatat(dirfd, path(p), &st, flags));
10346 unlock_user(p, arg2, 0);
10347
10348 if (!is_error(ret)) {
10349 if (!lock_user_struct(VERIFY_WRITE, target_stx, arg5, 0)) {
10350 return -TARGET_EFAULT;
10351 }
10352 memset(target_stx, 0, sizeof(*target_stx));
10353 __put_user(major(st.st_dev), &target_stx->stx_dev_major);
10354 __put_user(minor(st.st_dev), &target_stx->stx_dev_minor);
10355 __put_user(st.st_ino, &target_stx->stx_ino);
10356 __put_user(st.st_mode, &target_stx->stx_mode);
10357 __put_user(st.st_uid, &target_stx->stx_uid);
10358 __put_user(st.st_gid, &target_stx->stx_gid);
10359 __put_user(st.st_nlink, &target_stx->stx_nlink);
10360 __put_user(major(st.st_rdev), &target_stx->stx_rdev_major);
10361 __put_user(minor(st.st_rdev), &target_stx->stx_rdev_minor);
10362 __put_user(st.st_size, &target_stx->stx_size);
10363 __put_user(st.st_blksize, &target_stx->stx_blksize);
10364 __put_user(st.st_blocks, &target_stx->stx_blocks);
10365 __put_user(st.st_atime, &target_stx->stx_atime.tv_sec);
10366 __put_user(st.st_mtime, &target_stx->stx_mtime.tv_sec);
10367 __put_user(st.st_ctime, &target_stx->stx_ctime.tv_sec);
10368 unlock_user_struct(target_stx, arg5, 1);
10369 }
10370 }
10371 return ret;
10372 #endif
10373 #ifdef TARGET_NR_lchown
10374 case TARGET_NR_lchown:
10375 if (!(p = lock_user_string(arg1)))
10376 return -TARGET_EFAULT;
10377 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
10378 unlock_user(p, arg1, 0);
10379 return ret;
10380 #endif
10381 #ifdef TARGET_NR_getuid
10382 case TARGET_NR_getuid:
10383 return get_errno(high2lowuid(getuid()));
10384 #endif
10385 #ifdef TARGET_NR_getgid
10386 case TARGET_NR_getgid:
10387 return get_errno(high2lowgid(getgid()));
10388 #endif
10389 #ifdef TARGET_NR_geteuid
10390 case TARGET_NR_geteuid:
10391 return get_errno(high2lowuid(geteuid()));
10392 #endif
10393 #ifdef TARGET_NR_getegid
10394 case TARGET_NR_getegid:
10395 return get_errno(high2lowgid(getegid()));
10396 #endif
10397 case TARGET_NR_setreuid:
10398 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
10399 case TARGET_NR_setregid:
10400 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
10401 case TARGET_NR_getgroups:
10402 {
10403 int gidsetsize = arg1;
10404 target_id *target_grouplist;
10405 gid_t *grouplist;
10406 int i;
10407
10408 grouplist = alloca(gidsetsize * sizeof(gid_t));
10409 ret = get_errno(getgroups(gidsetsize, grouplist));
10410 if (gidsetsize == 0)
10411 return ret;
10412 if (!is_error(ret)) {
10413 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
10414 if (!target_grouplist)
10415 return -TARGET_EFAULT;
10416 for(i = 0;i < ret; i++)
10417 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
10418 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
10419 }
10420 }
10421 return ret;
10422 case TARGET_NR_setgroups:
10423 {
10424 int gidsetsize = arg1;
10425 target_id *target_grouplist;
10426 gid_t *grouplist = NULL;
10427 int i;
10428 if (gidsetsize) {
10429 grouplist = alloca(gidsetsize * sizeof(gid_t));
10430 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
10431 if (!target_grouplist) {
10432 return -TARGET_EFAULT;
10433 }
10434 for (i = 0; i < gidsetsize; i++) {
10435 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
10436 }
10437 unlock_user(target_grouplist, arg2, 0);
10438 }
10439 return get_errno(setgroups(gidsetsize, grouplist));
10440 }
10441 case TARGET_NR_fchown:
10442 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
10443 #if defined(TARGET_NR_fchownat)
10444 case TARGET_NR_fchownat:
10445 if (!(p = lock_user_string(arg2)))
10446 return -TARGET_EFAULT;
10447 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
10448 low2highgid(arg4), arg5));
10449 unlock_user(p, arg2, 0);
10450 return ret;
10451 #endif
10452 #ifdef TARGET_NR_setresuid
10453 case TARGET_NR_setresuid:
10454 return get_errno(sys_setresuid(low2highuid(arg1),
10455 low2highuid(arg2),
10456 low2highuid(arg3)));
10457 #endif
10458 #ifdef TARGET_NR_getresuid
10459 case TARGET_NR_getresuid:
10460 {
10461 uid_t ruid, euid, suid;
10462 ret = get_errno(getresuid(&ruid, &euid, &suid));
10463 if (!is_error(ret)) {
10464 if (put_user_id(high2lowuid(ruid), arg1)
10465 || put_user_id(high2lowuid(euid), arg2)
10466 || put_user_id(high2lowuid(suid), arg3))
10467 return -TARGET_EFAULT;
10468 }
10469 }
10470 return ret;
10471 #endif
10472 #ifdef TARGET_NR_getresgid
10473 case TARGET_NR_setresgid:
10474 return get_errno(sys_setresgid(low2highgid(arg1),
10475 low2highgid(arg2),
10476 low2highgid(arg3)));
10477 #endif
10478 #ifdef TARGET_NR_getresgid
10479 case TARGET_NR_getresgid:
10480 {
10481 gid_t rgid, egid, sgid;
10482 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10483 if (!is_error(ret)) {
10484 if (put_user_id(high2lowgid(rgid), arg1)
10485 || put_user_id(high2lowgid(egid), arg2)
10486 || put_user_id(high2lowgid(sgid), arg3))
10487 return -TARGET_EFAULT;
10488 }
10489 }
10490 return ret;
10491 #endif
10492 #ifdef TARGET_NR_chown
10493 case TARGET_NR_chown:
10494 if (!(p = lock_user_string(arg1)))
10495 return -TARGET_EFAULT;
10496 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
10497 unlock_user(p, arg1, 0);
10498 return ret;
10499 #endif
10500 case TARGET_NR_setuid:
10501 return get_errno(sys_setuid(low2highuid(arg1)));
10502 case TARGET_NR_setgid:
10503 return get_errno(sys_setgid(low2highgid(arg1)));
10504 case TARGET_NR_setfsuid:
10505 return get_errno(setfsuid(arg1));
10506 case TARGET_NR_setfsgid:
10507 return get_errno(setfsgid(arg1));
10508
10509 #ifdef TARGET_NR_lchown32
10510 case TARGET_NR_lchown32:
10511 if (!(p = lock_user_string(arg1)))
10512 return -TARGET_EFAULT;
10513 ret = get_errno(lchown(p, arg2, arg3));
10514 unlock_user(p, arg1, 0);
10515 return ret;
10516 #endif
10517 #ifdef TARGET_NR_getuid32
10518 case TARGET_NR_getuid32:
10519 return get_errno(getuid());
10520 #endif
10521
10522 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
10523 /* Alpha specific */
10524 case TARGET_NR_getxuid:
10525 {
10526 uid_t euid;
10527 euid=geteuid();
10528 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
10529 }
10530 return get_errno(getuid());
10531 #endif
10532 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
10533 /* Alpha specific */
10534 case TARGET_NR_getxgid:
10535 {
10536 uid_t egid;
10537 egid=getegid();
10538 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
10539 }
10540 return get_errno(getgid());
10541 #endif
10542 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
10543 /* Alpha specific */
10544 case TARGET_NR_osf_getsysinfo:
10545 ret = -TARGET_EOPNOTSUPP;
10546 switch (arg1) {
10547 case TARGET_GSI_IEEE_FP_CONTROL:
10548 {
10549 uint64_t fpcr = cpu_alpha_load_fpcr(cpu_env);
10550 uint64_t swcr = ((CPUAlphaState *)cpu_env)->swcr;
10551
10552 swcr &= ~SWCR_STATUS_MASK;
10553 swcr |= (fpcr >> 35) & SWCR_STATUS_MASK;
10554
10555 if (put_user_u64 (swcr, arg2))
10556 return -TARGET_EFAULT;
10557 ret = 0;
10558 }
10559 break;
10560
10561 /* case GSI_IEEE_STATE_AT_SIGNAL:
10562 -- Not implemented in linux kernel.
10563 case GSI_UACPROC:
10564 -- Retrieves current unaligned access state; not much used.
10565 case GSI_PROC_TYPE:
10566 -- Retrieves implver information; surely not used.
10567 case GSI_GET_HWRPB:
10568 -- Grabs a copy of the HWRPB; surely not used.
10569 */
10570 }
10571 return ret;
10572 #endif
10573 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
10574 /* Alpha specific */
10575 case TARGET_NR_osf_setsysinfo:
10576 ret = -TARGET_EOPNOTSUPP;
10577 switch (arg1) {
10578 case TARGET_SSI_IEEE_FP_CONTROL:
10579 {
10580 uint64_t swcr, fpcr;
10581
10582 if (get_user_u64 (swcr, arg2)) {
10583 return -TARGET_EFAULT;
10584 }
10585
10586 /*
10587 * The kernel calls swcr_update_status to update the
10588 * status bits from the fpcr at every point that it
10589 * could be queried. Therefore, we store the status
10590 * bits only in FPCR.
10591 */
10592 ((CPUAlphaState *)cpu_env)->swcr
10593 = swcr & (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK);
10594
10595 fpcr = cpu_alpha_load_fpcr(cpu_env);
10596 fpcr &= ((uint64_t)FPCR_DYN_MASK << 32);
10597 fpcr |= alpha_ieee_swcr_to_fpcr(swcr);
10598 cpu_alpha_store_fpcr(cpu_env, fpcr);
10599 ret = 0;
10600 }
10601 break;
10602
10603 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
10604 {
10605 uint64_t exc, fpcr, fex;
10606
10607 if (get_user_u64(exc, arg2)) {
10608 return -TARGET_EFAULT;
10609 }
10610 exc &= SWCR_STATUS_MASK;
10611 fpcr = cpu_alpha_load_fpcr(cpu_env);
10612
10613 /* Old exceptions are not signaled. */
10614 fex = alpha_ieee_fpcr_to_swcr(fpcr);
10615 fex = exc & ~fex;
10616 fex >>= SWCR_STATUS_TO_EXCSUM_SHIFT;
10617 fex &= ((CPUArchState *)cpu_env)->swcr;
10618
10619 /* Update the hardware fpcr. */
10620 fpcr |= alpha_ieee_swcr_to_fpcr(exc);
10621 cpu_alpha_store_fpcr(cpu_env, fpcr);
10622
10623 if (fex) {
10624 int si_code = TARGET_FPE_FLTUNK;
10625 target_siginfo_t info;
10626
10627 if (fex & SWCR_TRAP_ENABLE_DNO) {
10628 si_code = TARGET_FPE_FLTUND;
10629 }
10630 if (fex & SWCR_TRAP_ENABLE_INE) {
10631 si_code = TARGET_FPE_FLTRES;
10632 }
10633 if (fex & SWCR_TRAP_ENABLE_UNF) {
10634 si_code = TARGET_FPE_FLTUND;
10635 }
10636 if (fex & SWCR_TRAP_ENABLE_OVF) {
10637 si_code = TARGET_FPE_FLTOVF;
10638 }
10639 if (fex & SWCR_TRAP_ENABLE_DZE) {
10640 si_code = TARGET_FPE_FLTDIV;
10641 }
10642 if (fex & SWCR_TRAP_ENABLE_INV) {
10643 si_code = TARGET_FPE_FLTINV;
10644 }
10645
10646 info.si_signo = SIGFPE;
10647 info.si_errno = 0;
10648 info.si_code = si_code;
10649 info._sifields._sigfault._addr
10650 = ((CPUArchState *)cpu_env)->pc;
10651 queue_signal((CPUArchState *)cpu_env, info.si_signo,
10652 QEMU_SI_FAULT, &info);
10653 }
10654 ret = 0;
10655 }
10656 break;
10657
10658 /* case SSI_NVPAIRS:
10659 -- Used with SSIN_UACPROC to enable unaligned accesses.
10660 case SSI_IEEE_STATE_AT_SIGNAL:
10661 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
10662 -- Not implemented in linux kernel
10663 */
10664 }
10665 return ret;
10666 #endif
10667 #ifdef TARGET_NR_osf_sigprocmask
10668 /* Alpha specific. */
10669 case TARGET_NR_osf_sigprocmask:
10670 {
10671 abi_ulong mask;
10672 int how;
10673 sigset_t set, oldset;
10674
10675 switch(arg1) {
10676 case TARGET_SIG_BLOCK:
10677 how = SIG_BLOCK;
10678 break;
10679 case TARGET_SIG_UNBLOCK:
10680 how = SIG_UNBLOCK;
10681 break;
10682 case TARGET_SIG_SETMASK:
10683 how = SIG_SETMASK;
10684 break;
10685 default:
10686 return -TARGET_EINVAL;
10687 }
10688 mask = arg2;
10689 target_to_host_old_sigset(&set, &mask);
10690 ret = do_sigprocmask(how, &set, &oldset);
10691 if (!ret) {
10692 host_to_target_old_sigset(&mask, &oldset);
10693 ret = mask;
10694 }
10695 }
10696 return ret;
10697 #endif
10698
10699 #ifdef TARGET_NR_getgid32
10700 case TARGET_NR_getgid32:
10701 return get_errno(getgid());
10702 #endif
10703 #ifdef TARGET_NR_geteuid32
10704 case TARGET_NR_geteuid32:
10705 return get_errno(geteuid());
10706 #endif
10707 #ifdef TARGET_NR_getegid32
10708 case TARGET_NR_getegid32:
10709 return get_errno(getegid());
10710 #endif
10711 #ifdef TARGET_NR_setreuid32
10712 case TARGET_NR_setreuid32:
10713 return get_errno(setreuid(arg1, arg2));
10714 #endif
10715 #ifdef TARGET_NR_setregid32
10716 case TARGET_NR_setregid32:
10717 return get_errno(setregid(arg1, arg2));
10718 #endif
10719 #ifdef TARGET_NR_getgroups32
10720 case TARGET_NR_getgroups32:
10721 {
10722 int gidsetsize = arg1;
10723 uint32_t *target_grouplist;
10724 gid_t *grouplist;
10725 int i;
10726
10727 grouplist = alloca(gidsetsize * sizeof(gid_t));
10728 ret = get_errno(getgroups(gidsetsize, grouplist));
10729 if (gidsetsize == 0)
10730 return ret;
10731 if (!is_error(ret)) {
10732 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0);
10733 if (!target_grouplist) {
10734 return -TARGET_EFAULT;
10735 }
10736 for(i = 0;i < ret; i++)
10737 target_grouplist[i] = tswap32(grouplist[i]);
10738 unlock_user(target_grouplist, arg2, gidsetsize * 4);
10739 }
10740 }
10741 return ret;
10742 #endif
10743 #ifdef TARGET_NR_setgroups32
10744 case TARGET_NR_setgroups32:
10745 {
10746 int gidsetsize = arg1;
10747 uint32_t *target_grouplist;
10748 gid_t *grouplist;
10749 int i;
10750
10751 grouplist = alloca(gidsetsize * sizeof(gid_t));
10752 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
10753 if (!target_grouplist) {
10754 return -TARGET_EFAULT;
10755 }
10756 for(i = 0;i < gidsetsize; i++)
10757 grouplist[i] = tswap32(target_grouplist[i]);
10758 unlock_user(target_grouplist, arg2, 0);
10759 return get_errno(setgroups(gidsetsize, grouplist));
10760 }
10761 #endif
10762 #ifdef TARGET_NR_fchown32
10763 case TARGET_NR_fchown32:
10764 return get_errno(fchown(arg1, arg2, arg3));
10765 #endif
10766 #ifdef TARGET_NR_setresuid32
10767 case TARGET_NR_setresuid32:
10768 return get_errno(sys_setresuid(arg1, arg2, arg3));
10769 #endif
10770 #ifdef TARGET_NR_getresuid32
10771 case TARGET_NR_getresuid32:
10772 {
10773 uid_t ruid, euid, suid;
10774 ret = get_errno(getresuid(&ruid, &euid, &suid));
10775 if (!is_error(ret)) {
10776 if (put_user_u32(ruid, arg1)
10777 || put_user_u32(euid, arg2)
10778 || put_user_u32(suid, arg3))
10779 return -TARGET_EFAULT;
10780 }
10781 }
10782 return ret;
10783 #endif
10784 #ifdef TARGET_NR_setresgid32
10785 case TARGET_NR_setresgid32:
10786 return get_errno(sys_setresgid(arg1, arg2, arg3));
10787 #endif
10788 #ifdef TARGET_NR_getresgid32
10789 case TARGET_NR_getresgid32:
10790 {
10791 gid_t rgid, egid, sgid;
10792 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10793 if (!is_error(ret)) {
10794 if (put_user_u32(rgid, arg1)
10795 || put_user_u32(egid, arg2)
10796 || put_user_u32(sgid, arg3))
10797 return -TARGET_EFAULT;
10798 }
10799 }
10800 return ret;
10801 #endif
10802 #ifdef TARGET_NR_chown32
10803 case TARGET_NR_chown32:
10804 if (!(p = lock_user_string(arg1)))
10805 return -TARGET_EFAULT;
10806 ret = get_errno(chown(p, arg2, arg3));
10807 unlock_user(p, arg1, 0);
10808 return ret;
10809 #endif
10810 #ifdef TARGET_NR_setuid32
10811 case TARGET_NR_setuid32:
10812 return get_errno(sys_setuid(arg1));
10813 #endif
10814 #ifdef TARGET_NR_setgid32
10815 case TARGET_NR_setgid32:
10816 return get_errno(sys_setgid(arg1));
10817 #endif
10818 #ifdef TARGET_NR_setfsuid32
10819 case TARGET_NR_setfsuid32:
10820 return get_errno(setfsuid(arg1));
10821 #endif
10822 #ifdef TARGET_NR_setfsgid32
10823 case TARGET_NR_setfsgid32:
10824 return get_errno(setfsgid(arg1));
10825 #endif
10826 #ifdef TARGET_NR_mincore
10827 case TARGET_NR_mincore:
10828 {
10829 void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
10830 if (!a) {
10831 return -TARGET_ENOMEM;
10832 }
10833 p = lock_user_string(arg3);
10834 if (!p) {
10835 ret = -TARGET_EFAULT;
10836 } else {
10837 ret = get_errno(mincore(a, arg2, p));
10838 unlock_user(p, arg3, ret);
10839 }
10840 unlock_user(a, arg1, 0);
10841 }
10842 return ret;
10843 #endif
10844 #ifdef TARGET_NR_arm_fadvise64_64
10845 case TARGET_NR_arm_fadvise64_64:
10846 /* arm_fadvise64_64 looks like fadvise64_64 but
10847 * with different argument order: fd, advice, offset, len
10848 * rather than the usual fd, offset, len, advice.
10849 * Note that offset and len are both 64-bit so appear as
10850 * pairs of 32-bit registers.
10851 */
10852 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
10853 target_offset64(arg5, arg6), arg2);
10854 return -host_to_target_errno(ret);
10855 #endif
10856
10857 #if TARGET_ABI_BITS == 32
10858
10859 #ifdef TARGET_NR_fadvise64_64
10860 case TARGET_NR_fadvise64_64:
10861 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
10862 /* 6 args: fd, advice, offset (high, low), len (high, low) */
10863 ret = arg2;
10864 arg2 = arg3;
10865 arg3 = arg4;
10866 arg4 = arg5;
10867 arg5 = arg6;
10868 arg6 = ret;
10869 #else
10870 /* 6 args: fd, offset (high, low), len (high, low), advice */
10871 if (regpairs_aligned(cpu_env, num)) {
10872 /* offset is in (3,4), len in (5,6) and advice in 7 */
10873 arg2 = arg3;
10874 arg3 = arg4;
10875 arg4 = arg5;
10876 arg5 = arg6;
10877 arg6 = arg7;
10878 }
10879 #endif
10880 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
10881 target_offset64(arg4, arg5), arg6);
10882 return -host_to_target_errno(ret);
10883 #endif
10884
10885 #ifdef TARGET_NR_fadvise64
10886 case TARGET_NR_fadvise64:
10887 /* 5 args: fd, offset (high, low), len, advice */
10888 if (regpairs_aligned(cpu_env, num)) {
10889 /* offset is in (3,4), len in 5 and advice in 6 */
10890 arg2 = arg3;
10891 arg3 = arg4;
10892 arg4 = arg5;
10893 arg5 = arg6;
10894 }
10895 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
10896 return -host_to_target_errno(ret);
10897 #endif
10898
10899 #else /* not a 32-bit ABI */
10900 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
10901 #ifdef TARGET_NR_fadvise64_64
10902 case TARGET_NR_fadvise64_64:
10903 #endif
10904 #ifdef TARGET_NR_fadvise64
10905 case TARGET_NR_fadvise64:
10906 #endif
10907 #ifdef TARGET_S390X
10908 switch (arg4) {
10909 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
10910 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
10911 case 6: arg4 = POSIX_FADV_DONTNEED; break;
10912 case 7: arg4 = POSIX_FADV_NOREUSE; break;
10913 default: break;
10914 }
10915 #endif
10916 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
10917 #endif
10918 #endif /* end of 64-bit ABI fadvise handling */
10919
10920 #ifdef TARGET_NR_madvise
10921 case TARGET_NR_madvise:
10922 /* A straight passthrough may not be safe because qemu sometimes
10923 turns private file-backed mappings into anonymous mappings.
10924 This will break MADV_DONTNEED.
10925 This is a hint, so ignoring and returning success is ok. */
10926 return 0;
10927 #endif
10928 #if TARGET_ABI_BITS == 32
10929 case TARGET_NR_fcntl64:
10930 {
10931 int cmd;
10932 struct flock64 fl;
10933 from_flock64_fn *copyfrom = copy_from_user_flock64;
10934 to_flock64_fn *copyto = copy_to_user_flock64;
10935
10936 #ifdef TARGET_ARM
10937 if (!((CPUARMState *)cpu_env)->eabi) {
10938 copyfrom = copy_from_user_oabi_flock64;
10939 copyto = copy_to_user_oabi_flock64;
10940 }
10941 #endif
10942
10943 cmd = target_to_host_fcntl_cmd(arg2);
10944 if (cmd == -TARGET_EINVAL) {
10945 return cmd;
10946 }
10947
10948 switch(arg2) {
10949 case TARGET_F_GETLK64:
10950 ret = copyfrom(&fl, arg3);
10951 if (ret) {
10952 break;
10953 }
10954 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
10955 if (ret == 0) {
10956 ret = copyto(arg3, &fl);
10957 }
10958 break;
10959
10960 case TARGET_F_SETLK64:
10961 case TARGET_F_SETLKW64:
10962 ret = copyfrom(&fl, arg3);
10963 if (ret) {
10964 break;
10965 }
10966 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
10967 break;
10968 default:
10969 ret = do_fcntl(arg1, arg2, arg3);
10970 break;
10971 }
10972 return ret;
10973 }
10974 #endif
10975 #ifdef TARGET_NR_cacheflush
10976 case TARGET_NR_cacheflush:
10977 /* self-modifying code is handled automatically, so nothing needed */
10978 return 0;
10979 #endif
10980 #ifdef TARGET_NR_getpagesize
10981 case TARGET_NR_getpagesize:
10982 return TARGET_PAGE_SIZE;
10983 #endif
10984 case TARGET_NR_gettid:
10985 return get_errno(sys_gettid());
10986 #ifdef TARGET_NR_readahead
10987 case TARGET_NR_readahead:
10988 #if TARGET_ABI_BITS == 32
10989 if (regpairs_aligned(cpu_env, num)) {
10990 arg2 = arg3;
10991 arg3 = arg4;
10992 arg4 = arg5;
10993 }
10994 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
10995 #else
10996 ret = get_errno(readahead(arg1, arg2, arg3));
10997 #endif
10998 return ret;
10999 #endif
11000 #ifdef CONFIG_ATTR
11001 #ifdef TARGET_NR_setxattr
11002 case TARGET_NR_listxattr:
11003 case TARGET_NR_llistxattr:
11004 {
11005 void *p, *b = 0;
11006 if (arg2) {
11007 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11008 if (!b) {
11009 return -TARGET_EFAULT;
11010 }
11011 }
11012 p = lock_user_string(arg1);
11013 if (p) {
11014 if (num == TARGET_NR_listxattr) {
11015 ret = get_errno(listxattr(p, b, arg3));
11016 } else {
11017 ret = get_errno(llistxattr(p, b, arg3));
11018 }
11019 } else {
11020 ret = -TARGET_EFAULT;
11021 }
11022 unlock_user(p, arg1, 0);
11023 unlock_user(b, arg2, arg3);
11024 return ret;
11025 }
11026 case TARGET_NR_flistxattr:
11027 {
11028 void *b = 0;
11029 if (arg2) {
11030 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
11031 if (!b) {
11032 return -TARGET_EFAULT;
11033 }
11034 }
11035 ret = get_errno(flistxattr(arg1, b, arg3));
11036 unlock_user(b, arg2, arg3);
11037 return ret;
11038 }
11039 case TARGET_NR_setxattr:
11040 case TARGET_NR_lsetxattr:
11041 {
11042 void *p, *n, *v = 0;
11043 if (arg3) {
11044 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11045 if (!v) {
11046 return -TARGET_EFAULT;
11047 }
11048 }
11049 p = lock_user_string(arg1);
11050 n = lock_user_string(arg2);
11051 if (p && n) {
11052 if (num == TARGET_NR_setxattr) {
11053 ret = get_errno(setxattr(p, n, v, arg4, arg5));
11054 } else {
11055 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
11056 }
11057 } else {
11058 ret = -TARGET_EFAULT;
11059 }
11060 unlock_user(p, arg1, 0);
11061 unlock_user(n, arg2, 0);
11062 unlock_user(v, arg3, 0);
11063 }
11064 return ret;
11065 case TARGET_NR_fsetxattr:
11066 {
11067 void *n, *v = 0;
11068 if (arg3) {
11069 v = lock_user(VERIFY_READ, arg3, arg4, 1);
11070 if (!v) {
11071 return -TARGET_EFAULT;
11072 }
11073 }
11074 n = lock_user_string(arg2);
11075 if (n) {
11076 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
11077 } else {
11078 ret = -TARGET_EFAULT;
11079 }
11080 unlock_user(n, arg2, 0);
11081 unlock_user(v, arg3, 0);
11082 }
11083 return ret;
11084 case TARGET_NR_getxattr:
11085 case TARGET_NR_lgetxattr:
11086 {
11087 void *p, *n, *v = 0;
11088 if (arg3) {
11089 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11090 if (!v) {
11091 return -TARGET_EFAULT;
11092 }
11093 }
11094 p = lock_user_string(arg1);
11095 n = lock_user_string(arg2);
11096 if (p && n) {
11097 if (num == TARGET_NR_getxattr) {
11098 ret = get_errno(getxattr(p, n, v, arg4));
11099 } else {
11100 ret = get_errno(lgetxattr(p, n, v, arg4));
11101 }
11102 } else {
11103 ret = -TARGET_EFAULT;
11104 }
11105 unlock_user(p, arg1, 0);
11106 unlock_user(n, arg2, 0);
11107 unlock_user(v, arg3, arg4);
11108 }
11109 return ret;
11110 case TARGET_NR_fgetxattr:
11111 {
11112 void *n, *v = 0;
11113 if (arg3) {
11114 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
11115 if (!v) {
11116 return -TARGET_EFAULT;
11117 }
11118 }
11119 n = lock_user_string(arg2);
11120 if (n) {
11121 ret = get_errno(fgetxattr(arg1, n, v, arg4));
11122 } else {
11123 ret = -TARGET_EFAULT;
11124 }
11125 unlock_user(n, arg2, 0);
11126 unlock_user(v, arg3, arg4);
11127 }
11128 return ret;
11129 case TARGET_NR_removexattr:
11130 case TARGET_NR_lremovexattr:
11131 {
11132 void *p, *n;
11133 p = lock_user_string(arg1);
11134 n = lock_user_string(arg2);
11135 if (p && n) {
11136 if (num == TARGET_NR_removexattr) {
11137 ret = get_errno(removexattr(p, n));
11138 } else {
11139 ret = get_errno(lremovexattr(p, n));
11140 }
11141 } else {
11142 ret = -TARGET_EFAULT;
11143 }
11144 unlock_user(p, arg1, 0);
11145 unlock_user(n, arg2, 0);
11146 }
11147 return ret;
11148 case TARGET_NR_fremovexattr:
11149 {
11150 void *n;
11151 n = lock_user_string(arg2);
11152 if (n) {
11153 ret = get_errno(fremovexattr(arg1, n));
11154 } else {
11155 ret = -TARGET_EFAULT;
11156 }
11157 unlock_user(n, arg2, 0);
11158 }
11159 return ret;
11160 #endif
11161 #endif /* CONFIG_ATTR */
11162 #ifdef TARGET_NR_set_thread_area
11163 case TARGET_NR_set_thread_area:
11164 #if defined(TARGET_MIPS)
11165 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
11166 return 0;
11167 #elif defined(TARGET_CRIS)
11168 if (arg1 & 0xff)
11169 ret = -TARGET_EINVAL;
11170 else {
11171 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
11172 ret = 0;
11173 }
11174 return ret;
11175 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
11176 return do_set_thread_area(cpu_env, arg1);
11177 #elif defined(TARGET_M68K)
11178 {
11179 TaskState *ts = cpu->opaque;
11180 ts->tp_value = arg1;
11181 return 0;
11182 }
11183 #else
11184 return -TARGET_ENOSYS;
11185 #endif
11186 #endif
11187 #ifdef TARGET_NR_get_thread_area
11188 case TARGET_NR_get_thread_area:
11189 #if defined(TARGET_I386) && defined(TARGET_ABI32)
11190 return do_get_thread_area(cpu_env, arg1);
11191 #elif defined(TARGET_M68K)
11192 {
11193 TaskState *ts = cpu->opaque;
11194 return ts->tp_value;
11195 }
11196 #else
11197 return -TARGET_ENOSYS;
11198 #endif
11199 #endif
11200 #ifdef TARGET_NR_getdomainname
11201 case TARGET_NR_getdomainname:
11202 return -TARGET_ENOSYS;
11203 #endif
11204
11205 #ifdef TARGET_NR_clock_settime
11206 case TARGET_NR_clock_settime:
11207 {
11208 struct timespec ts;
11209
11210 ret = target_to_host_timespec(&ts, arg2);
11211 if (!is_error(ret)) {
11212 ret = get_errno(clock_settime(arg1, &ts));
11213 }
11214 return ret;
11215 }
11216 #endif
11217 #ifdef TARGET_NR_clock_gettime
11218 case TARGET_NR_clock_gettime:
11219 {
11220 struct timespec ts;
11221 ret = get_errno(clock_gettime(arg1, &ts));
11222 if (!is_error(ret)) {
11223 ret = host_to_target_timespec(arg2, &ts);
11224 }
11225 return ret;
11226 }
11227 #endif
11228 #ifdef TARGET_NR_clock_getres
11229 case TARGET_NR_clock_getres:
11230 {
11231 struct timespec ts;
11232 ret = get_errno(clock_getres(arg1, &ts));
11233 if (!is_error(ret)) {
11234 host_to_target_timespec(arg2, &ts);
11235 }
11236 return ret;
11237 }
11238 #endif
11239 #ifdef TARGET_NR_clock_nanosleep
11240 case TARGET_NR_clock_nanosleep:
11241 {
11242 struct timespec ts;
11243 target_to_host_timespec(&ts, arg3);
11244 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
11245 &ts, arg4 ? &ts : NULL));
11246 if (arg4)
11247 host_to_target_timespec(arg4, &ts);
11248
11249 #if defined(TARGET_PPC)
11250 /* clock_nanosleep is odd in that it returns positive errno values.
11251 * On PPC, CR0 bit 3 should be set in such a situation. */
11252 if (ret && ret != -TARGET_ERESTARTSYS) {
11253 ((CPUPPCState *)cpu_env)->crf[0] |= 1;
11254 }
11255 #endif
11256 return ret;
11257 }
11258 #endif
11259
11260 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
11261 case TARGET_NR_set_tid_address:
11262 return get_errno(set_tid_address((int *)g2h(arg1)));
11263 #endif
11264
11265 case TARGET_NR_tkill:
11266 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
11267
11268 case TARGET_NR_tgkill:
11269 return get_errno(safe_tgkill((int)arg1, (int)arg2,
11270 target_to_host_signal(arg3)));
11271
11272 #ifdef TARGET_NR_set_robust_list
11273 case TARGET_NR_set_robust_list:
11274 case TARGET_NR_get_robust_list:
11275 /* The ABI for supporting robust futexes has userspace pass
11276 * the kernel a pointer to a linked list which is updated by
11277 * userspace after the syscall; the list is walked by the kernel
11278 * when the thread exits. Since the linked list in QEMU guest
11279 * memory isn't a valid linked list for the host and we have
11280 * no way to reliably intercept the thread-death event, we can't
11281 * support these. Silently return ENOSYS so that guest userspace
11282 * falls back to a non-robust futex implementation (which should
11283 * be OK except in the corner case of the guest crashing while
11284 * holding a mutex that is shared with another process via
11285 * shared memory).
11286 */
11287 return -TARGET_ENOSYS;
11288 #endif
11289
11290 #if defined(TARGET_NR_utimensat)
11291 case TARGET_NR_utimensat:
11292 {
11293 struct timespec *tsp, ts[2];
11294 if (!arg3) {
11295 tsp = NULL;
11296 } else {
11297 target_to_host_timespec(ts, arg3);
11298 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec));
11299 tsp = ts;
11300 }
11301 if (!arg2)
11302 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
11303 else {
11304 if (!(p = lock_user_string(arg2))) {
11305 return -TARGET_EFAULT;
11306 }
11307 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
11308 unlock_user(p, arg2, 0);
11309 }
11310 }
11311 return ret;
11312 #endif
11313 case TARGET_NR_futex:
11314 return do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
11315 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
11316 case TARGET_NR_inotify_init:
11317 ret = get_errno(sys_inotify_init());
11318 if (ret >= 0) {
11319 fd_trans_register(ret, &target_inotify_trans);
11320 }
11321 return ret;
11322 #endif
11323 #ifdef CONFIG_INOTIFY1
11324 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
11325 case TARGET_NR_inotify_init1:
11326 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
11327 fcntl_flags_tbl)));
11328 if (ret >= 0) {
11329 fd_trans_register(ret, &target_inotify_trans);
11330 }
11331 return ret;
11332 #endif
11333 #endif
11334 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
11335 case TARGET_NR_inotify_add_watch:
11336 p = lock_user_string(arg2);
11337 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
11338 unlock_user(p, arg2, 0);
11339 return ret;
11340 #endif
11341 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
11342 case TARGET_NR_inotify_rm_watch:
11343 return get_errno(sys_inotify_rm_watch(arg1, arg2));
11344 #endif
11345
11346 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
11347 case TARGET_NR_mq_open:
11348 {
11349 struct mq_attr posix_mq_attr;
11350 struct mq_attr *pposix_mq_attr;
11351 int host_flags;
11352
11353 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
11354 pposix_mq_attr = NULL;
11355 if (arg4) {
11356 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
11357 return -TARGET_EFAULT;
11358 }
11359 pposix_mq_attr = &posix_mq_attr;
11360 }
11361 p = lock_user_string(arg1 - 1);
11362 if (!p) {
11363 return -TARGET_EFAULT;
11364 }
11365 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
11366 unlock_user (p, arg1, 0);
11367 }
11368 return ret;
11369
11370 case TARGET_NR_mq_unlink:
11371 p = lock_user_string(arg1 - 1);
11372 if (!p) {
11373 return -TARGET_EFAULT;
11374 }
11375 ret = get_errno(mq_unlink(p));
11376 unlock_user (p, arg1, 0);
11377 return ret;
11378
11379 case TARGET_NR_mq_timedsend:
11380 {
11381 struct timespec ts;
11382
11383 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11384 if (arg5 != 0) {
11385 target_to_host_timespec(&ts, arg5);
11386 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
11387 host_to_target_timespec(arg5, &ts);
11388 } else {
11389 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
11390 }
11391 unlock_user (p, arg2, arg3);
11392 }
11393 return ret;
11394
11395 case TARGET_NR_mq_timedreceive:
11396 {
11397 struct timespec ts;
11398 unsigned int prio;
11399
11400 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11401 if (arg5 != 0) {
11402 target_to_host_timespec(&ts, arg5);
11403 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11404 &prio, &ts));
11405 host_to_target_timespec(arg5, &ts);
11406 } else {
11407 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11408 &prio, NULL));
11409 }
11410 unlock_user (p, arg2, arg3);
11411 if (arg4 != 0)
11412 put_user_u32(prio, arg4);
11413 }
11414 return ret;
11415
11416 /* Not implemented for now... */
11417 /* case TARGET_NR_mq_notify: */
11418 /* break; */
11419
11420 case TARGET_NR_mq_getsetattr:
11421 {
11422 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
11423 ret = 0;
11424 if (arg2 != 0) {
11425 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
11426 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
11427 &posix_mq_attr_out));
11428 } else if (arg3 != 0) {
11429 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
11430 }
11431 if (ret == 0 && arg3 != 0) {
11432 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
11433 }
11434 }
11435 return ret;
11436 #endif
11437
11438 #ifdef CONFIG_SPLICE
11439 #ifdef TARGET_NR_tee
11440 case TARGET_NR_tee:
11441 {
11442 ret = get_errno(tee(arg1,arg2,arg3,arg4));
11443 }
11444 return ret;
11445 #endif
11446 #ifdef TARGET_NR_splice
11447 case TARGET_NR_splice:
11448 {
11449 loff_t loff_in, loff_out;
11450 loff_t *ploff_in = NULL, *ploff_out = NULL;
11451 if (arg2) {
11452 if (get_user_u64(loff_in, arg2)) {
11453 return -TARGET_EFAULT;
11454 }
11455 ploff_in = &loff_in;
11456 }
11457 if (arg4) {
11458 if (get_user_u64(loff_out, arg4)) {
11459 return -TARGET_EFAULT;
11460 }
11461 ploff_out = &loff_out;
11462 }
11463 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
11464 if (arg2) {
11465 if (put_user_u64(loff_in, arg2)) {
11466 return -TARGET_EFAULT;
11467 }
11468 }
11469 if (arg4) {
11470 if (put_user_u64(loff_out, arg4)) {
11471 return -TARGET_EFAULT;
11472 }
11473 }
11474 }
11475 return ret;
11476 #endif
11477 #ifdef TARGET_NR_vmsplice
11478 case TARGET_NR_vmsplice:
11479 {
11480 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11481 if (vec != NULL) {
11482 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
11483 unlock_iovec(vec, arg2, arg3, 0);
11484 } else {
11485 ret = -host_to_target_errno(errno);
11486 }
11487 }
11488 return ret;
11489 #endif
11490 #endif /* CONFIG_SPLICE */
11491 #ifdef CONFIG_EVENTFD
11492 #if defined(TARGET_NR_eventfd)
11493 case TARGET_NR_eventfd:
11494 ret = get_errno(eventfd(arg1, 0));
11495 if (ret >= 0) {
11496 fd_trans_register(ret, &target_eventfd_trans);
11497 }
11498 return ret;
11499 #endif
11500 #if defined(TARGET_NR_eventfd2)
11501 case TARGET_NR_eventfd2:
11502 {
11503 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
11504 if (arg2 & TARGET_O_NONBLOCK) {
11505 host_flags |= O_NONBLOCK;
11506 }
11507 if (arg2 & TARGET_O_CLOEXEC) {
11508 host_flags |= O_CLOEXEC;
11509 }
11510 ret = get_errno(eventfd(arg1, host_flags));
11511 if (ret >= 0) {
11512 fd_trans_register(ret, &target_eventfd_trans);
11513 }
11514 return ret;
11515 }
11516 #endif
11517 #endif /* CONFIG_EVENTFD */
11518 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
11519 case TARGET_NR_fallocate:
11520 #if TARGET_ABI_BITS == 32
11521 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
11522 target_offset64(arg5, arg6)));
11523 #else
11524 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
11525 #endif
11526 return ret;
11527 #endif
11528 #if defined(CONFIG_SYNC_FILE_RANGE)
11529 #if defined(TARGET_NR_sync_file_range)
11530 case TARGET_NR_sync_file_range:
11531 #if TARGET_ABI_BITS == 32
11532 #if defined(TARGET_MIPS)
11533 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11534 target_offset64(arg5, arg6), arg7));
11535 #else
11536 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
11537 target_offset64(arg4, arg5), arg6));
11538 #endif /* !TARGET_MIPS */
11539 #else
11540 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
11541 #endif
11542 return ret;
11543 #endif
11544 #if defined(TARGET_NR_sync_file_range2)
11545 case TARGET_NR_sync_file_range2:
11546 /* This is like sync_file_range but the arguments are reordered */
11547 #if TARGET_ABI_BITS == 32
11548 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11549 target_offset64(arg5, arg6), arg2));
11550 #else
11551 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
11552 #endif
11553 return ret;
11554 #endif
11555 #endif
11556 #if defined(TARGET_NR_signalfd4)
11557 case TARGET_NR_signalfd4:
11558 return do_signalfd4(arg1, arg2, arg4);
11559 #endif
11560 #if defined(TARGET_NR_signalfd)
11561 case TARGET_NR_signalfd:
11562 return do_signalfd4(arg1, arg2, 0);
11563 #endif
11564 #if defined(CONFIG_EPOLL)
11565 #if defined(TARGET_NR_epoll_create)
11566 case TARGET_NR_epoll_create:
11567 return get_errno(epoll_create(arg1));
11568 #endif
11569 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
11570 case TARGET_NR_epoll_create1:
11571 return get_errno(epoll_create1(arg1));
11572 #endif
11573 #if defined(TARGET_NR_epoll_ctl)
11574 case TARGET_NR_epoll_ctl:
11575 {
11576 struct epoll_event ep;
11577 struct epoll_event *epp = 0;
11578 if (arg4) {
11579 struct target_epoll_event *target_ep;
11580 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
11581 return -TARGET_EFAULT;
11582 }
11583 ep.events = tswap32(target_ep->events);
11584 /* The epoll_data_t union is just opaque data to the kernel,
11585 * so we transfer all 64 bits across and need not worry what
11586 * actual data type it is.
11587 */
11588 ep.data.u64 = tswap64(target_ep->data.u64);
11589 unlock_user_struct(target_ep, arg4, 0);
11590 epp = &ep;
11591 }
11592 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
11593 }
11594 #endif
11595
11596 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
11597 #if defined(TARGET_NR_epoll_wait)
11598 case TARGET_NR_epoll_wait:
11599 #endif
11600 #if defined(TARGET_NR_epoll_pwait)
11601 case TARGET_NR_epoll_pwait:
11602 #endif
11603 {
11604 struct target_epoll_event *target_ep;
11605 struct epoll_event *ep;
11606 int epfd = arg1;
11607 int maxevents = arg3;
11608 int timeout = arg4;
11609
11610 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
11611 return -TARGET_EINVAL;
11612 }
11613
11614 target_ep = lock_user(VERIFY_WRITE, arg2,
11615 maxevents * sizeof(struct target_epoll_event), 1);
11616 if (!target_ep) {
11617 return -TARGET_EFAULT;
11618 }
11619
11620 ep = g_try_new(struct epoll_event, maxevents);
11621 if (!ep) {
11622 unlock_user(target_ep, arg2, 0);
11623 return -TARGET_ENOMEM;
11624 }
11625
11626 switch (num) {
11627 #if defined(TARGET_NR_epoll_pwait)
11628 case TARGET_NR_epoll_pwait:
11629 {
11630 target_sigset_t *target_set;
11631 sigset_t _set, *set = &_set;
11632
11633 if (arg5) {
11634 if (arg6 != sizeof(target_sigset_t)) {
11635 ret = -TARGET_EINVAL;
11636 break;
11637 }
11638
11639 target_set = lock_user(VERIFY_READ, arg5,
11640 sizeof(target_sigset_t), 1);
11641 if (!target_set) {
11642 ret = -TARGET_EFAULT;
11643 break;
11644 }
11645 target_to_host_sigset(set, target_set);
11646 unlock_user(target_set, arg5, 0);
11647 } else {
11648 set = NULL;
11649 }
11650
11651 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11652 set, SIGSET_T_SIZE));
11653 break;
11654 }
11655 #endif
11656 #if defined(TARGET_NR_epoll_wait)
11657 case TARGET_NR_epoll_wait:
11658 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11659 NULL, 0));
11660 break;
11661 #endif
11662 default:
11663 ret = -TARGET_ENOSYS;
11664 }
11665 if (!is_error(ret)) {
11666 int i;
11667 for (i = 0; i < ret; i++) {
11668 target_ep[i].events = tswap32(ep[i].events);
11669 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
11670 }
11671 unlock_user(target_ep, arg2,
11672 ret * sizeof(struct target_epoll_event));
11673 } else {
11674 unlock_user(target_ep, arg2, 0);
11675 }
11676 g_free(ep);
11677 return ret;
11678 }
11679 #endif
11680 #endif
11681 #ifdef TARGET_NR_prlimit64
11682 case TARGET_NR_prlimit64:
11683 {
11684 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
11685 struct target_rlimit64 *target_rnew, *target_rold;
11686 struct host_rlimit64 rnew, rold, *rnewp = 0;
11687 int resource = target_to_host_resource(arg2);
11688 if (arg3) {
11689 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
11690 return -TARGET_EFAULT;
11691 }
11692 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
11693 rnew.rlim_max = tswap64(target_rnew->rlim_max);
11694 unlock_user_struct(target_rnew, arg3, 0);
11695 rnewp = &rnew;
11696 }
11697
11698 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
11699 if (!is_error(ret) && arg4) {
11700 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
11701 return -TARGET_EFAULT;
11702 }
11703 target_rold->rlim_cur = tswap64(rold.rlim_cur);
11704 target_rold->rlim_max = tswap64(rold.rlim_max);
11705 unlock_user_struct(target_rold, arg4, 1);
11706 }
11707 return ret;
11708 }
11709 #endif
11710 #ifdef TARGET_NR_gethostname
11711 case TARGET_NR_gethostname:
11712 {
11713 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
11714 if (name) {
11715 ret = get_errno(gethostname(name, arg2));
11716 unlock_user(name, arg1, arg2);
11717 } else {
11718 ret = -TARGET_EFAULT;
11719 }
11720 return ret;
11721 }
11722 #endif
11723 #ifdef TARGET_NR_atomic_cmpxchg_32
11724 case TARGET_NR_atomic_cmpxchg_32:
11725 {
11726 /* should use start_exclusive from main.c */
11727 abi_ulong mem_value;
11728 if (get_user_u32(mem_value, arg6)) {
11729 target_siginfo_t info;
11730 info.si_signo = SIGSEGV;
11731 info.si_errno = 0;
11732 info.si_code = TARGET_SEGV_MAPERR;
11733 info._sifields._sigfault._addr = arg6;
11734 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11735 QEMU_SI_FAULT, &info);
11736 ret = 0xdeadbeef;
11737
11738 }
11739 if (mem_value == arg2)
11740 put_user_u32(arg1, arg6);
11741 return mem_value;
11742 }
11743 #endif
11744 #ifdef TARGET_NR_atomic_barrier
11745 case TARGET_NR_atomic_barrier:
11746 /* Like the kernel implementation and the
11747 qemu arm barrier, no-op this? */
11748 return 0;
11749 #endif
11750
11751 #ifdef TARGET_NR_timer_create
11752 case TARGET_NR_timer_create:
11753 {
11754 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
11755
11756 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
11757
11758 int clkid = arg1;
11759 int timer_index = next_free_host_timer();
11760
11761 if (timer_index < 0) {
11762 ret = -TARGET_EAGAIN;
11763 } else {
11764 timer_t *phtimer = g_posix_timers + timer_index;
11765
11766 if (arg2) {
11767 phost_sevp = &host_sevp;
11768 ret = target_to_host_sigevent(phost_sevp, arg2);
11769 if (ret != 0) {
11770 return ret;
11771 }
11772 }
11773
11774 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
11775 if (ret) {
11776 phtimer = NULL;
11777 } else {
11778 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
11779 return -TARGET_EFAULT;
11780 }
11781 }
11782 }
11783 return ret;
11784 }
11785 #endif
11786
11787 #ifdef TARGET_NR_timer_settime
11788 case TARGET_NR_timer_settime:
11789 {
11790 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
11791 * struct itimerspec * old_value */
11792 target_timer_t timerid = get_timer_id(arg1);
11793
11794 if (timerid < 0) {
11795 ret = timerid;
11796 } else if (arg3 == 0) {
11797 ret = -TARGET_EINVAL;
11798 } else {
11799 timer_t htimer = g_posix_timers[timerid];
11800 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
11801
11802 if (target_to_host_itimerspec(&hspec_new, arg3)) {
11803 return -TARGET_EFAULT;
11804 }
11805 ret = get_errno(
11806 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
11807 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
11808 return -TARGET_EFAULT;
11809 }
11810 }
11811 return ret;
11812 }
11813 #endif
11814
11815 #ifdef TARGET_NR_timer_gettime
11816 case TARGET_NR_timer_gettime:
11817 {
11818 /* args: timer_t timerid, struct itimerspec *curr_value */
11819 target_timer_t timerid = get_timer_id(arg1);
11820
11821 if (timerid < 0) {
11822 ret = timerid;
11823 } else if (!arg2) {
11824 ret = -TARGET_EFAULT;
11825 } else {
11826 timer_t htimer = g_posix_timers[timerid];
11827 struct itimerspec hspec;
11828 ret = get_errno(timer_gettime(htimer, &hspec));
11829
11830 if (host_to_target_itimerspec(arg2, &hspec)) {
11831 ret = -TARGET_EFAULT;
11832 }
11833 }
11834 return ret;
11835 }
11836 #endif
11837
11838 #ifdef TARGET_NR_timer_getoverrun
11839 case TARGET_NR_timer_getoverrun:
11840 {
11841 /* args: timer_t timerid */
11842 target_timer_t timerid = get_timer_id(arg1);
11843
11844 if (timerid < 0) {
11845 ret = timerid;
11846 } else {
11847 timer_t htimer = g_posix_timers[timerid];
11848 ret = get_errno(timer_getoverrun(htimer));
11849 }
11850 fd_trans_unregister(ret);
11851 return ret;
11852 }
11853 #endif
11854
11855 #ifdef TARGET_NR_timer_delete
11856 case TARGET_NR_timer_delete:
11857 {
11858 /* args: timer_t timerid */
11859 target_timer_t timerid = get_timer_id(arg1);
11860
11861 if (timerid < 0) {
11862 ret = timerid;
11863 } else {
11864 timer_t htimer = g_posix_timers[timerid];
11865 ret = get_errno(timer_delete(htimer));
11866 g_posix_timers[timerid] = 0;
11867 }
11868 return ret;
11869 }
11870 #endif
11871
11872 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
11873 case TARGET_NR_timerfd_create:
11874 return get_errno(timerfd_create(arg1,
11875 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
11876 #endif
11877
11878 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
11879 case TARGET_NR_timerfd_gettime:
11880 {
11881 struct itimerspec its_curr;
11882
11883 ret = get_errno(timerfd_gettime(arg1, &its_curr));
11884
11885 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
11886 return -TARGET_EFAULT;
11887 }
11888 }
11889 return ret;
11890 #endif
11891
11892 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
11893 case TARGET_NR_timerfd_settime:
11894 {
11895 struct itimerspec its_new, its_old, *p_new;
11896
11897 if (arg3) {
11898 if (target_to_host_itimerspec(&its_new, arg3)) {
11899 return -TARGET_EFAULT;
11900 }
11901 p_new = &its_new;
11902 } else {
11903 p_new = NULL;
11904 }
11905
11906 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
11907
11908 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
11909 return -TARGET_EFAULT;
11910 }
11911 }
11912 return ret;
11913 #endif
11914
11915 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
11916 case TARGET_NR_ioprio_get:
11917 return get_errno(ioprio_get(arg1, arg2));
11918 #endif
11919
11920 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
11921 case TARGET_NR_ioprio_set:
11922 return get_errno(ioprio_set(arg1, arg2, arg3));
11923 #endif
11924
11925 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
11926 case TARGET_NR_setns:
11927 return get_errno(setns(arg1, arg2));
11928 #endif
11929 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
11930 case TARGET_NR_unshare:
11931 return get_errno(unshare(arg1));
11932 #endif
11933 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
11934 case TARGET_NR_kcmp:
11935 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
11936 #endif
11937 #ifdef TARGET_NR_swapcontext
11938 case TARGET_NR_swapcontext:
11939 /* PowerPC specific. */
11940 return do_swapcontext(cpu_env, arg1, arg2, arg3);
11941 #endif
11942
11943 default:
11944 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
11945 return -TARGET_ENOSYS;
11946 }
11947 return ret;
11948 }
11949
11950 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
11951 abi_long arg2, abi_long arg3, abi_long arg4,
11952 abi_long arg5, abi_long arg6, abi_long arg7,
11953 abi_long arg8)
11954 {
11955 CPUState *cpu = env_cpu(cpu_env);
11956 abi_long ret;
11957
11958 #ifdef DEBUG_ERESTARTSYS
11959 /* Debug-only code for exercising the syscall-restart code paths
11960 * in the per-architecture cpu main loops: restart every syscall
11961 * the guest makes once before letting it through.
11962 */
11963 {
11964 static bool flag;
11965 flag = !flag;
11966 if (flag) {
11967 return -TARGET_ERESTARTSYS;
11968 }
11969 }
11970 #endif
11971
11972 trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4,
11973 arg5, arg6, arg7, arg8);
11974
11975 if (unlikely(do_strace)) {
11976 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
11977 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
11978 arg5, arg6, arg7, arg8);
11979 print_syscall_ret(num, ret);
11980 } else {
11981 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
11982 arg5, arg6, arg7, arg8);
11983 }
11984
11985 trace_guest_user_syscall_ret(cpu, num, ret);
11986 return ret;
11987 }
AR7 emulation for QEMU