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s390x/tcg: Implement VECTOR LOAD POSITIVE
[qemu/ar7.git] / linux-user / syscall.c
blobf5ff6f5dc8a8c2cebf0d26d5f769f62aae4f2edd
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 <elf.h>
24 #include <endian.h>
25 #include <grp.h>
26 #include <sys/ipc.h>
27 #include <sys/msg.h>
28 #include <sys/wait.h>
29 #include <sys/mount.h>
30 #include <sys/file.h>
31 #include <sys/fsuid.h>
32 #include <sys/personality.h>
33 #include <sys/prctl.h>
34 #include <sys/resource.h>
35 #include <sys/swap.h>
36 #include <linux/capability.h>
37 #include <sched.h>
38 #include <sys/timex.h>
39 #include <sys/socket.h>
40 #include <sys/un.h>
41 #include <sys/uio.h>
42 #include <poll.h>
43 #include <sys/times.h>
44 #include <sys/shm.h>
45 #include <sys/sem.h>
46 #include <sys/statfs.h>
47 #include <utime.h>
48 #include <sys/sysinfo.h>
49 #include <sys/signalfd.h>
50 //#include <sys/user.h>
51 #include <netinet/ip.h>
52 #include <netinet/tcp.h>
53 #include <linux/wireless.h>
54 #include <linux/icmp.h>
55 #include <linux/icmpv6.h>
56 #include <linux/errqueue.h>
57 #include <linux/random.h>
58 #include "qemu-common.h"
59 #ifdef CONFIG_TIMERFD
60 #include <sys/timerfd.h>
61 #endif
62 #ifdef CONFIG_EVENTFD
63 #include <sys/eventfd.h>
64 #endif
65 #ifdef CONFIG_EPOLL
66 #include <sys/epoll.h>
67 #endif
68 #ifdef CONFIG_ATTR
69 #include "qemu/xattr.h"
70 #endif
71 #ifdef CONFIG_SENDFILE
72 #include <sys/sendfile.h>
73 #endif
74
75 #define termios host_termios
76 #define winsize host_winsize
77 #define termio host_termio
78 #define sgttyb host_sgttyb /* same as target */
79 #define tchars host_tchars /* same as target */
80 #define ltchars host_ltchars /* same as target */
81
82 #include <linux/termios.h>
83 #include <linux/unistd.h>
84 #include <linux/cdrom.h>
85 #include <linux/hdreg.h>
86 #include <linux/soundcard.h>
87 #include <linux/kd.h>
88 #include <linux/mtio.h>
89 #include <linux/fs.h>
90 #if defined(CONFIG_FIEMAP)
91 #include <linux/fiemap.h>
92 #endif
93 #include <linux/fb.h>
94 #if defined(CONFIG_USBFS)
95 #include <linux/usbdevice_fs.h>
96 #include <linux/usb/ch9.h>
97 #endif
98 #include <linux/vt.h>
99 #include <linux/dm-ioctl.h>
100 #include <linux/reboot.h>
101 #include <linux/route.h>
102 #include <linux/filter.h>
103 #include <linux/blkpg.h>
104 #include <netpacket/packet.h>
105 #include <linux/netlink.h>
106 #include "linux_loop.h"
107 #include "uname.h"
108
109 #include "qemu.h"
110 #include "fd-trans.h"
111
112 #ifndef CLONE_IO
113 #define CLONE_IO 0x80000000 /* Clone io context */
114 #endif
115
116 /* We can't directly call the host clone syscall, because this will
117 * badly confuse libc (breaking mutexes, for example). So we must
118 * divide clone flags into:
119 * * flag combinations that look like pthread_create()
120 * * flag combinations that look like fork()
121 * * flags we can implement within QEMU itself
122 * * flags we can't support and will return an error for
123 */
124 /* For thread creation, all these flags must be present; for
125 * fork, none must be present.
126 */
127 #define CLONE_THREAD_FLAGS \
128 (CLONE_VM | CLONE_FS | CLONE_FILES | \
129 CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM)
130
131 /* These flags are ignored:
132 * CLONE_DETACHED is now ignored by the kernel;
133 * CLONE_IO is just an optimisation hint to the I/O scheduler
134 */
135 #define CLONE_IGNORED_FLAGS \
136 (CLONE_DETACHED | CLONE_IO)
137
138 /* Flags for fork which we can implement within QEMU itself */
139 #define CLONE_OPTIONAL_FORK_FLAGS \
140 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
141 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
142
143 /* Flags for thread creation which we can implement within QEMU itself */
144 #define CLONE_OPTIONAL_THREAD_FLAGS \
145 (CLONE_SETTLS | CLONE_PARENT_SETTID | \
146 CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID | CLONE_PARENT)
147
148 #define CLONE_INVALID_FORK_FLAGS \
149 (~(CSIGNAL | CLONE_OPTIONAL_FORK_FLAGS | CLONE_IGNORED_FLAGS))
150
151 #define CLONE_INVALID_THREAD_FLAGS \
152 (~(CSIGNAL | CLONE_THREAD_FLAGS | CLONE_OPTIONAL_THREAD_FLAGS | \
153 CLONE_IGNORED_FLAGS))
154
155 /* CLONE_VFORK is special cased early in do_fork(). The other flag bits
156 * have almost all been allocated. We cannot support any of
157 * CLONE_NEWNS, CLONE_NEWCGROUP, CLONE_NEWUTS, CLONE_NEWIPC,
158 * CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_PTRACE, CLONE_UNTRACED.
159 * The checks against the invalid thread masks above will catch these.
160 * (The one remaining unallocated bit is 0x1000 which used to be CLONE_PID.)
161 */
162
163 /* Define DEBUG_ERESTARTSYS to force every syscall to be restarted
164 * once. This exercises the codepaths for restart.
165 */
166 //#define DEBUG_ERESTARTSYS
167
168 //#include <linux/msdos_fs.h>
169 #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
170 #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
171
172 #undef _syscall0
173 #undef _syscall1
174 #undef _syscall2
175 #undef _syscall3
176 #undef _syscall4
177 #undef _syscall5
178 #undef _syscall6
179
180 #define _syscall0(type,name) \
181 static type name (void) \
182 { \
183 return syscall(__NR_##name); \
184 }
185
186 #define _syscall1(type,name,type1,arg1) \
187 static type name (type1 arg1) \
188 { \
189 return syscall(__NR_##name, arg1); \
190 }
191
192 #define _syscall2(type,name,type1,arg1,type2,arg2) \
193 static type name (type1 arg1,type2 arg2) \
194 { \
195 return syscall(__NR_##name, arg1, arg2); \
196 }
197
198 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
199 static type name (type1 arg1,type2 arg2,type3 arg3) \
200 { \
201 return syscall(__NR_##name, arg1, arg2, arg3); \
202 }
203
204 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
205 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
206 { \
207 return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
208 }
209
210 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
211 type5,arg5) \
212 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
213 { \
214 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
215 }
216
217
218 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
219 type5,arg5,type6,arg6) \
220 static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
221 type6 arg6) \
222 { \
223 return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
224 }
225
226
227 #define __NR_sys_uname __NR_uname
228 #define __NR_sys_getcwd1 __NR_getcwd
229 #define __NR_sys_getdents __NR_getdents
230 #define __NR_sys_getdents64 __NR_getdents64
231 #define __NR_sys_getpriority __NR_getpriority
232 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
233 #define __NR_sys_rt_tgsigqueueinfo __NR_rt_tgsigqueueinfo
234 #define __NR_sys_syslog __NR_syslog
235 #define __NR_sys_futex __NR_futex
236 #define __NR_sys_inotify_init __NR_inotify_init
237 #define __NR_sys_inotify_add_watch __NR_inotify_add_watch
238 #define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
239
240 #if defined(__alpha__) || defined(__x86_64__) || defined(__s390x__)
241 #define __NR__llseek __NR_lseek
242 #endif
243
244 /* Newer kernel ports have llseek() instead of _llseek() */
245 #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
246 #define TARGET_NR__llseek TARGET_NR_llseek
247 #endif
248
249 #define __NR_sys_gettid __NR_gettid
250 _syscall0(int, sys_gettid)
251
252 /* For the 64-bit guest on 32-bit host case we must emulate
253 * getdents using getdents64, because otherwise the host
254 * might hand us back more dirent records than we can fit
255 * into the guest buffer after structure format conversion.
256 * Otherwise we emulate getdents with getdents if the host has it.
257 */
258 #if defined(__NR_getdents) && HOST_LONG_BITS >= TARGET_ABI_BITS
259 #define EMULATE_GETDENTS_WITH_GETDENTS
260 #endif
261
262 #if defined(TARGET_NR_getdents) && defined(EMULATE_GETDENTS_WITH_GETDENTS)
263 _syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
264 #endif
265 #if (defined(TARGET_NR_getdents) && \
266 !defined(EMULATE_GETDENTS_WITH_GETDENTS)) || \
267 (defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
268 _syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
269 #endif
270 #if defined(TARGET_NR__llseek) && defined(__NR_llseek)
271 _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
272 loff_t *, res, uint, wh);
273 #endif
274 _syscall3(int, sys_rt_sigqueueinfo, pid_t, pid, int, sig, siginfo_t *, uinfo)
275 _syscall4(int, sys_rt_tgsigqueueinfo, pid_t, pid, pid_t, tid, int, sig,
276 siginfo_t *, uinfo)
277 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
278 #ifdef __NR_exit_group
279 _syscall1(int,exit_group,int,error_code)
280 #endif
281 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
282 _syscall1(int,set_tid_address,int *,tidptr)
283 #endif
284 #if defined(TARGET_NR_futex) && defined(__NR_futex)
285 _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
286 const struct timespec *,timeout,int *,uaddr2,int,val3)
287 #endif
288 #define __NR_sys_sched_getaffinity __NR_sched_getaffinity
289 _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
290 unsigned long *, user_mask_ptr);
291 #define __NR_sys_sched_setaffinity __NR_sched_setaffinity
292 _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
293 unsigned long *, user_mask_ptr);
294 #define __NR_sys_getcpu __NR_getcpu
295 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
296 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
297 void *, arg);
298 _syscall2(int, capget, struct __user_cap_header_struct *, header,
299 struct __user_cap_data_struct *, data);
300 _syscall2(int, capset, struct __user_cap_header_struct *, header,
301 struct __user_cap_data_struct *, data);
302 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
303 _syscall2(int, ioprio_get, int, which, int, who)
304 #endif
305 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
306 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio)
307 #endif
308 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
309 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
310 #endif
311
312 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
313 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
314 unsigned long, idx1, unsigned long, idx2)
315 #endif
316
317 static bitmask_transtbl fcntl_flags_tbl[] = {
318 { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
319 { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
320 { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
321 { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
322 { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
323 { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
324 { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
325 { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
326 { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
327 { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
328 { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
329 { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
330 { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
331 #if defined(O_DIRECT)
332 { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
333 #endif
334 #if defined(O_NOATIME)
335 { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
336 #endif
337 #if defined(O_CLOEXEC)
338 { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
339 #endif
340 #if defined(O_PATH)
341 { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
342 #endif
343 #if defined(O_TMPFILE)
344 { TARGET_O_TMPFILE, TARGET_O_TMPFILE, O_TMPFILE, O_TMPFILE },
345 #endif
346 /* Don't terminate the list prematurely on 64-bit host+guest. */
347 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
348 { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
349 #endif
350 { 0, 0, 0, 0 }
351 };
352
353 static int sys_getcwd1(char *buf, size_t size)
354 {
355 if (getcwd(buf, size) == NULL) {
356 /* getcwd() sets errno */
357 return (-1);
358 }
359 return strlen(buf)+1;
360 }
361
362 #ifdef TARGET_NR_utimensat
363 #if defined(__NR_utimensat)
364 #define __NR_sys_utimensat __NR_utimensat
365 _syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
366 const struct timespec *,tsp,int,flags)
367 #else
368 static int sys_utimensat(int dirfd, const char *pathname,
369 const struct timespec times[2], int flags)
370 {
371 errno = ENOSYS;
372 return -1;
373 }
374 #endif
375 #endif /* TARGET_NR_utimensat */
376
377 #ifdef TARGET_NR_renameat2
378 #if defined(__NR_renameat2)
379 #define __NR_sys_renameat2 __NR_renameat2
380 _syscall5(int, sys_renameat2, int, oldfd, const char *, old, int, newfd,
381 const char *, new, unsigned int, flags)
382 #else
383 static int sys_renameat2(int oldfd, const char *old,
384 int newfd, const char *new, int flags)
385 {
386 if (flags == 0) {
387 return renameat(oldfd, old, newfd, new);
388 }
389 errno = ENOSYS;
390 return -1;
391 }
392 #endif
393 #endif /* TARGET_NR_renameat2 */
394
395 #ifdef CONFIG_INOTIFY
396 #include <sys/inotify.h>
397
398 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
399 static int sys_inotify_init(void)
400 {
401 return (inotify_init());
402 }
403 #endif
404 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
405 static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
406 {
407 return (inotify_add_watch(fd, pathname, mask));
408 }
409 #endif
410 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
411 static int sys_inotify_rm_watch(int fd, int32_t wd)
412 {
413 return (inotify_rm_watch(fd, wd));
414 }
415 #endif
416 #ifdef CONFIG_INOTIFY1
417 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
418 static int sys_inotify_init1(int flags)
419 {
420 return (inotify_init1(flags));
421 }
422 #endif
423 #endif
424 #else
425 /* Userspace can usually survive runtime without inotify */
426 #undef TARGET_NR_inotify_init
427 #undef TARGET_NR_inotify_init1
428 #undef TARGET_NR_inotify_add_watch
429 #undef TARGET_NR_inotify_rm_watch
430 #endif /* CONFIG_INOTIFY */
431
432 #if defined(TARGET_NR_prlimit64)
433 #ifndef __NR_prlimit64
434 # define __NR_prlimit64 -1
435 #endif
436 #define __NR_sys_prlimit64 __NR_prlimit64
437 /* The glibc rlimit structure may not be that used by the underlying syscall */
438 struct host_rlimit64 {
439 uint64_t rlim_cur;
440 uint64_t rlim_max;
441 };
442 _syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
443 const struct host_rlimit64 *, new_limit,
444 struct host_rlimit64 *, old_limit)
445 #endif
446
447
448 #if defined(TARGET_NR_timer_create)
449 /* Maxiumum of 32 active POSIX timers allowed at any one time. */
450 static timer_t g_posix_timers[32] = { 0, } ;
451
452 static inline int next_free_host_timer(void)
453 {
454 int k ;
455 /* FIXME: Does finding the next free slot require a lock? */
456 for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
457 if (g_posix_timers[k] == 0) {
458 g_posix_timers[k] = (timer_t) 1;
459 return k;
460 }
461 }
462 return -1;
463 }
464 #endif
465
466 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
467 #ifdef TARGET_ARM
468 static inline int regpairs_aligned(void *cpu_env, int num)
469 {
470 return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
471 }
472 #elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
473 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
474 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
475 /* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
476 * of registers which translates to the same as ARM/MIPS, because we start with
477 * r3 as arg1 */
478 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
479 #elif defined(TARGET_SH4)
480 /* SH4 doesn't align register pairs, except for p{read,write}64 */
481 static inline int regpairs_aligned(void *cpu_env, int num)
482 {
483 switch (num) {
484 case TARGET_NR_pread64:
485 case TARGET_NR_pwrite64:
486 return 1;
487
488 default:
489 return 0;
490 }
491 }
492 #elif defined(TARGET_XTENSA)
493 static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
494 #else
495 static inline int regpairs_aligned(void *cpu_env, int num) { return 0; }
496 #endif
497
498 #define ERRNO_TABLE_SIZE 1200
499
500 /* target_to_host_errno_table[] is initialized from
501 * host_to_target_errno_table[] in syscall_init(). */
502 static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
503 };
504
505 /*
506 * This list is the union of errno values overridden in asm-<arch>/errno.h
507 * minus the errnos that are not actually generic to all archs.
508 */
509 static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
510 [EAGAIN] = TARGET_EAGAIN,
511 [EIDRM] = TARGET_EIDRM,
512 [ECHRNG] = TARGET_ECHRNG,
513 [EL2NSYNC] = TARGET_EL2NSYNC,
514 [EL3HLT] = TARGET_EL3HLT,
515 [EL3RST] = TARGET_EL3RST,
516 [ELNRNG] = TARGET_ELNRNG,
517 [EUNATCH] = TARGET_EUNATCH,
518 [ENOCSI] = TARGET_ENOCSI,
519 [EL2HLT] = TARGET_EL2HLT,
520 [EDEADLK] = TARGET_EDEADLK,
521 [ENOLCK] = TARGET_ENOLCK,
522 [EBADE] = TARGET_EBADE,
523 [EBADR] = TARGET_EBADR,
524 [EXFULL] = TARGET_EXFULL,
525 [ENOANO] = TARGET_ENOANO,
526 [EBADRQC] = TARGET_EBADRQC,
527 [EBADSLT] = TARGET_EBADSLT,
528 [EBFONT] = TARGET_EBFONT,
529 [ENOSTR] = TARGET_ENOSTR,
530 [ENODATA] = TARGET_ENODATA,
531 [ETIME] = TARGET_ETIME,
532 [ENOSR] = TARGET_ENOSR,
533 [ENONET] = TARGET_ENONET,
534 [ENOPKG] = TARGET_ENOPKG,
535 [EREMOTE] = TARGET_EREMOTE,
536 [ENOLINK] = TARGET_ENOLINK,
537 [EADV] = TARGET_EADV,
538 [ESRMNT] = TARGET_ESRMNT,
539 [ECOMM] = TARGET_ECOMM,
540 [EPROTO] = TARGET_EPROTO,
541 [EDOTDOT] = TARGET_EDOTDOT,
542 [EMULTIHOP] = TARGET_EMULTIHOP,
543 [EBADMSG] = TARGET_EBADMSG,
544 [ENAMETOOLONG] = TARGET_ENAMETOOLONG,
545 [EOVERFLOW] = TARGET_EOVERFLOW,
546 [ENOTUNIQ] = TARGET_ENOTUNIQ,
547 [EBADFD] = TARGET_EBADFD,
548 [EREMCHG] = TARGET_EREMCHG,
549 [ELIBACC] = TARGET_ELIBACC,
550 [ELIBBAD] = TARGET_ELIBBAD,
551 [ELIBSCN] = TARGET_ELIBSCN,
552 [ELIBMAX] = TARGET_ELIBMAX,
553 [ELIBEXEC] = TARGET_ELIBEXEC,
554 [EILSEQ] = TARGET_EILSEQ,
555 [ENOSYS] = TARGET_ENOSYS,
556 [ELOOP] = TARGET_ELOOP,
557 [ERESTART] = TARGET_ERESTART,
558 [ESTRPIPE] = TARGET_ESTRPIPE,
559 [ENOTEMPTY] = TARGET_ENOTEMPTY,
560 [EUSERS] = TARGET_EUSERS,
561 [ENOTSOCK] = TARGET_ENOTSOCK,
562 [EDESTADDRREQ] = TARGET_EDESTADDRREQ,
563 [EMSGSIZE] = TARGET_EMSGSIZE,
564 [EPROTOTYPE] = TARGET_EPROTOTYPE,
565 [ENOPROTOOPT] = TARGET_ENOPROTOOPT,
566 [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
567 [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
568 [EOPNOTSUPP] = TARGET_EOPNOTSUPP,
569 [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
570 [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
571 [EADDRINUSE] = TARGET_EADDRINUSE,
572 [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
573 [ENETDOWN] = TARGET_ENETDOWN,
574 [ENETUNREACH] = TARGET_ENETUNREACH,
575 [ENETRESET] = TARGET_ENETRESET,
576 [ECONNABORTED] = TARGET_ECONNABORTED,
577 [ECONNRESET] = TARGET_ECONNRESET,
578 [ENOBUFS] = TARGET_ENOBUFS,
579 [EISCONN] = TARGET_EISCONN,
580 [ENOTCONN] = TARGET_ENOTCONN,
581 [EUCLEAN] = TARGET_EUCLEAN,
582 [ENOTNAM] = TARGET_ENOTNAM,
583 [ENAVAIL] = TARGET_ENAVAIL,
584 [EISNAM] = TARGET_EISNAM,
585 [EREMOTEIO] = TARGET_EREMOTEIO,
586 [EDQUOT] = TARGET_EDQUOT,
587 [ESHUTDOWN] = TARGET_ESHUTDOWN,
588 [ETOOMANYREFS] = TARGET_ETOOMANYREFS,
589 [ETIMEDOUT] = TARGET_ETIMEDOUT,
590 [ECONNREFUSED] = TARGET_ECONNREFUSED,
591 [EHOSTDOWN] = TARGET_EHOSTDOWN,
592 [EHOSTUNREACH] = TARGET_EHOSTUNREACH,
593 [EALREADY] = TARGET_EALREADY,
594 [EINPROGRESS] = TARGET_EINPROGRESS,
595 [ESTALE] = TARGET_ESTALE,
596 [ECANCELED] = TARGET_ECANCELED,
597 [ENOMEDIUM] = TARGET_ENOMEDIUM,
598 [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
599 #ifdef ENOKEY
600 [ENOKEY] = TARGET_ENOKEY,
601 #endif
602 #ifdef EKEYEXPIRED
603 [EKEYEXPIRED] = TARGET_EKEYEXPIRED,
604 #endif
605 #ifdef EKEYREVOKED
606 [EKEYREVOKED] = TARGET_EKEYREVOKED,
607 #endif
608 #ifdef EKEYREJECTED
609 [EKEYREJECTED] = TARGET_EKEYREJECTED,
610 #endif
611 #ifdef EOWNERDEAD
612 [EOWNERDEAD] = TARGET_EOWNERDEAD,
613 #endif
614 #ifdef ENOTRECOVERABLE
615 [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
616 #endif
617 #ifdef ENOMSG
618 [ENOMSG] = TARGET_ENOMSG,
619 #endif
620 #ifdef ERKFILL
621 [ERFKILL] = TARGET_ERFKILL,
622 #endif
623 #ifdef EHWPOISON
624 [EHWPOISON] = TARGET_EHWPOISON,
625 #endif
626 };
627
628 static inline int host_to_target_errno(int err)
629 {
630 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
631 host_to_target_errno_table[err]) {
632 return host_to_target_errno_table[err];
633 }
634 return err;
635 }
636
637 static inline int target_to_host_errno(int err)
638 {
639 if (err >= 0 && err < ERRNO_TABLE_SIZE &&
640 target_to_host_errno_table[err]) {
641 return target_to_host_errno_table[err];
642 }
643 return err;
644 }
645
646 static inline abi_long get_errno(abi_long ret)
647 {
648 if (ret == -1)
649 return -host_to_target_errno(errno);
650 else
651 return ret;
652 }
653
654 const char *target_strerror(int err)
655 {
656 if (err == TARGET_ERESTARTSYS) {
657 return "To be restarted";
658 }
659 if (err == TARGET_QEMU_ESIGRETURN) {
660 return "Successful exit from sigreturn";
661 }
662
663 if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
664 return NULL;
665 }
666 return strerror(target_to_host_errno(err));
667 }
668
669 #define safe_syscall0(type, name) \
670 static type safe_##name(void) \
671 { \
672 return safe_syscall(__NR_##name); \
673 }
674
675 #define safe_syscall1(type, name, type1, arg1) \
676 static type safe_##name(type1 arg1) \
677 { \
678 return safe_syscall(__NR_##name, arg1); \
679 }
680
681 #define safe_syscall2(type, name, type1, arg1, type2, arg2) \
682 static type safe_##name(type1 arg1, type2 arg2) \
683 { \
684 return safe_syscall(__NR_##name, arg1, arg2); \
685 }
686
687 #define safe_syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
688 static type safe_##name(type1 arg1, type2 arg2, type3 arg3) \
689 { \
690 return safe_syscall(__NR_##name, arg1, arg2, arg3); \
691 }
692
693 #define safe_syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
694 type4, arg4) \
695 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
696 { \
697 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4); \
698 }
699
700 #define safe_syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
701 type4, arg4, type5, arg5) \
702 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
703 type5 arg5) \
704 { \
705 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
706 }
707
708 #define safe_syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
709 type4, arg4, type5, arg5, type6, arg6) \
710 static type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
711 type5 arg5, type6 arg6) \
712 { \
713 return safe_syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
714 }
715
716 safe_syscall3(ssize_t, read, int, fd, void *, buff, size_t, count)
717 safe_syscall3(ssize_t, write, int, fd, const void *, buff, size_t, count)
718 safe_syscall4(int, openat, int, dirfd, const char *, pathname, \
719 int, flags, mode_t, mode)
720 safe_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options, \
721 struct rusage *, rusage)
722 safe_syscall5(int, waitid, idtype_t, idtype, id_t, id, siginfo_t *, infop, \
723 int, options, struct rusage *, rusage)
724 safe_syscall3(int, execve, const char *, filename, char **, argv, char **, envp)
725 safe_syscall6(int, pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, \
726 fd_set *, exceptfds, struct timespec *, timeout, void *, sig)
727 safe_syscall5(int, ppoll, struct pollfd *, ufds, unsigned int, nfds,
728 struct timespec *, tsp, const sigset_t *, sigmask,
729 size_t, sigsetsize)
730 safe_syscall6(int, epoll_pwait, int, epfd, struct epoll_event *, events,
731 int, maxevents, int, timeout, const sigset_t *, sigmask,
732 size_t, sigsetsize)
733 safe_syscall6(int,futex,int *,uaddr,int,op,int,val, \
734 const struct timespec *,timeout,int *,uaddr2,int,val3)
735 safe_syscall2(int, rt_sigsuspend, sigset_t *, newset, size_t, sigsetsize)
736 safe_syscall2(int, kill, pid_t, pid, int, sig)
737 safe_syscall2(int, tkill, int, tid, int, sig)
738 safe_syscall3(int, tgkill, int, tgid, int, pid, int, sig)
739 safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt)
740 safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt)
741 safe_syscall5(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
742 unsigned long, pos_l, unsigned long, pos_h)
743 safe_syscall5(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt,
744 unsigned long, pos_l, unsigned long, pos_h)
745 safe_syscall3(int, connect, int, fd, const struct sockaddr *, addr,
746 socklen_t, addrlen)
747 safe_syscall6(ssize_t, sendto, int, fd, const void *, buf, size_t, len,
748 int, flags, const struct sockaddr *, addr, socklen_t, addrlen)
749 safe_syscall6(ssize_t, recvfrom, int, fd, void *, buf, size_t, len,
750 int, flags, struct sockaddr *, addr, socklen_t *, addrlen)
751 safe_syscall3(ssize_t, sendmsg, int, fd, const struct msghdr *, msg, int, flags)
752 safe_syscall3(ssize_t, recvmsg, int, fd, struct msghdr *, msg, int, flags)
753 safe_syscall2(int, flock, int, fd, int, operation)
754 safe_syscall4(int, rt_sigtimedwait, const sigset_t *, these, siginfo_t *, uinfo,
755 const struct timespec *, uts, size_t, sigsetsize)
756 safe_syscall4(int, accept4, int, fd, struct sockaddr *, addr, socklen_t *, len,
757 int, flags)
758 safe_syscall2(int, nanosleep, const struct timespec *, req,
759 struct timespec *, rem)
760 #ifdef TARGET_NR_clock_nanosleep
761 safe_syscall4(int, clock_nanosleep, const clockid_t, clock, int, flags,
762 const struct timespec *, req, struct timespec *, rem)
763 #endif
764 #ifdef __NR_msgsnd
765 safe_syscall4(int, msgsnd, int, msgid, const void *, msgp, size_t, sz,
766 int, flags)
767 safe_syscall5(int, msgrcv, int, msgid, void *, msgp, size_t, sz,
768 long, msgtype, int, flags)
769 safe_syscall4(int, semtimedop, int, semid, struct sembuf *, tsops,
770 unsigned, nsops, const struct timespec *, timeout)
771 #else
772 /* This host kernel architecture uses a single ipc syscall; fake up
773 * wrappers for the sub-operations to hide this implementation detail.
774 * Annoyingly we can't include linux/ipc.h to get the constant definitions
775 * for the call parameter because some structs in there conflict with the
776 * sys/ipc.h ones. So we just define them here, and rely on them being
777 * the same for all host architectures.
778 */
779 #define Q_SEMTIMEDOP 4
780 #define Q_MSGSND 11
781 #define Q_MSGRCV 12
782 #define Q_IPCCALL(VERSION, OP) ((VERSION) << 16 | (OP))
783
784 safe_syscall6(int, ipc, int, call, long, first, long, second, long, third,
785 void *, ptr, long, fifth)
786 static int safe_msgsnd(int msgid, const void *msgp, size_t sz, int flags)
787 {
788 return safe_ipc(Q_IPCCALL(0, Q_MSGSND), msgid, sz, flags, (void *)msgp, 0);
789 }
790 static int safe_msgrcv(int msgid, void *msgp, size_t sz, long type, int flags)
791 {
792 return safe_ipc(Q_IPCCALL(1, Q_MSGRCV), msgid, sz, flags, msgp, type);
793 }
794 static int safe_semtimedop(int semid, struct sembuf *tsops, unsigned nsops,
795 const struct timespec *timeout)
796 {
797 return safe_ipc(Q_IPCCALL(0, Q_SEMTIMEDOP), semid, nsops, 0, tsops,
798 (long)timeout);
799 }
800 #endif
801 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
802 safe_syscall5(int, mq_timedsend, int, mqdes, const char *, msg_ptr,
803 size_t, len, unsigned, prio, const struct timespec *, timeout)
804 safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr,
805 size_t, len, unsigned *, prio, const struct timespec *, timeout)
806 #endif
807 /* We do ioctl like this rather than via safe_syscall3 to preserve the
808 * "third argument might be integer or pointer or not present" behaviour of
809 * the libc function.
810 */
811 #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__)
812 /* Similarly for fcntl. Note that callers must always:
813 * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK
814 * use the flock64 struct rather than unsuffixed flock
815 * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts.
816 */
817 #ifdef __NR_fcntl64
818 #define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__)
819 #else
820 #define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__)
821 #endif
822
823 static inline int host_to_target_sock_type(int host_type)
824 {
825 int target_type;
826
827 switch (host_type & 0xf /* SOCK_TYPE_MASK */) {
828 case SOCK_DGRAM:
829 target_type = TARGET_SOCK_DGRAM;
830 break;
831 case SOCK_STREAM:
832 target_type = TARGET_SOCK_STREAM;
833 break;
834 default:
835 target_type = host_type & 0xf /* SOCK_TYPE_MASK */;
836 break;
837 }
838
839 #if defined(SOCK_CLOEXEC)
840 if (host_type & SOCK_CLOEXEC) {
841 target_type |= TARGET_SOCK_CLOEXEC;
842 }
843 #endif
844
845 #if defined(SOCK_NONBLOCK)
846 if (host_type & SOCK_NONBLOCK) {
847 target_type |= TARGET_SOCK_NONBLOCK;
848 }
849 #endif
850
851 return target_type;
852 }
853
854 static abi_ulong target_brk;
855 static abi_ulong target_original_brk;
856 static abi_ulong brk_page;
857
858 void target_set_brk(abi_ulong new_brk)
859 {
860 target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
861 brk_page = HOST_PAGE_ALIGN(target_brk);
862 }
863
864 //#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
865 #define DEBUGF_BRK(message, args...)
866
867 /* do_brk() must return target values and target errnos. */
868 abi_long do_brk(abi_ulong new_brk)
869 {
870 abi_long mapped_addr;
871 abi_ulong new_alloc_size;
872
873 DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
874
875 if (!new_brk) {
876 DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
877 return target_brk;
878 }
879 if (new_brk < target_original_brk) {
880 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
881 target_brk);
882 return target_brk;
883 }
884
885 /* If the new brk is less than the highest page reserved to the
886 * target heap allocation, set it and we're almost done... */
887 if (new_brk <= brk_page) {
888 /* Heap contents are initialized to zero, as for anonymous
889 * mapped pages. */
890 if (new_brk > target_brk) {
891 memset(g2h(target_brk), 0, new_brk - target_brk);
892 }
893 target_brk = new_brk;
894 DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
895 return target_brk;
896 }
897
898 /* We need to allocate more memory after the brk... Note that
899 * we don't use MAP_FIXED because that will map over the top of
900 * any existing mapping (like the one with the host libc or qemu
901 * itself); instead we treat "mapped but at wrong address" as
902 * a failure and unmap again.
903 */
904 new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
905 mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
906 PROT_READ|PROT_WRITE,
907 MAP_ANON|MAP_PRIVATE, 0, 0));
908
909 if (mapped_addr == brk_page) {
910 /* Heap contents are initialized to zero, as for anonymous
911 * mapped pages. Technically the new pages are already
912 * initialized to zero since they *are* anonymous mapped
913 * pages, however we have to take care with the contents that
914 * come from the remaining part of the previous page: it may
915 * contains garbage data due to a previous heap usage (grown
916 * then shrunken). */
917 memset(g2h(target_brk), 0, brk_page - target_brk);
918
919 target_brk = new_brk;
920 brk_page = HOST_PAGE_ALIGN(target_brk);
921 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
922 target_brk);
923 return target_brk;
924 } else if (mapped_addr != -1) {
925 /* Mapped but at wrong address, meaning there wasn't actually
926 * enough space for this brk.
927 */
928 target_munmap(mapped_addr, new_alloc_size);
929 mapped_addr = -1;
930 DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
931 }
932 else {
933 DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
934 }
935
936 #if defined(TARGET_ALPHA)
937 /* We (partially) emulate OSF/1 on Alpha, which requires we
938 return a proper errno, not an unchanged brk value. */
939 return -TARGET_ENOMEM;
940 #endif
941 /* For everything else, return the previous break. */
942 return target_brk;
943 }
944
945 static inline abi_long copy_from_user_fdset(fd_set *fds,
946 abi_ulong target_fds_addr,
947 int n)
948 {
949 int i, nw, j, k;
950 abi_ulong b, *target_fds;
951
952 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
953 if (!(target_fds = lock_user(VERIFY_READ,
954 target_fds_addr,
955 sizeof(abi_ulong) * nw,
956 1)))
957 return -TARGET_EFAULT;
958
959 FD_ZERO(fds);
960 k = 0;
961 for (i = 0; i < nw; i++) {
962 /* grab the abi_ulong */
963 __get_user(b, &target_fds[i]);
964 for (j = 0; j < TARGET_ABI_BITS; j++) {
965 /* check the bit inside the abi_ulong */
966 if ((b >> j) & 1)
967 FD_SET(k, fds);
968 k++;
969 }
970 }
971
972 unlock_user(target_fds, target_fds_addr, 0);
973
974 return 0;
975 }
976
977 static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
978 abi_ulong target_fds_addr,
979 int n)
980 {
981 if (target_fds_addr) {
982 if (copy_from_user_fdset(fds, target_fds_addr, n))
983 return -TARGET_EFAULT;
984 *fds_ptr = fds;
985 } else {
986 *fds_ptr = NULL;
987 }
988 return 0;
989 }
990
991 static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
992 const fd_set *fds,
993 int n)
994 {
995 int i, nw, j, k;
996 abi_long v;
997 abi_ulong *target_fds;
998
999 nw = DIV_ROUND_UP(n, TARGET_ABI_BITS);
1000 if (!(target_fds = lock_user(VERIFY_WRITE,
1001 target_fds_addr,
1002 sizeof(abi_ulong) * nw,
1003 0)))
1004 return -TARGET_EFAULT;
1005
1006 k = 0;
1007 for (i = 0; i < nw; i++) {
1008 v = 0;
1009 for (j = 0; j < TARGET_ABI_BITS; j++) {
1010 v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
1011 k++;
1012 }
1013 __put_user(v, &target_fds[i]);
1014 }
1015
1016 unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
1017
1018 return 0;
1019 }
1020
1021 #if defined(__alpha__)
1022 #define HOST_HZ 1024
1023 #else
1024 #define HOST_HZ 100
1025 #endif
1026
1027 static inline abi_long host_to_target_clock_t(long ticks)
1028 {
1029 #if HOST_HZ == TARGET_HZ
1030 return ticks;
1031 #else
1032 return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
1033 #endif
1034 }
1035
1036 static inline abi_long host_to_target_rusage(abi_ulong target_addr,
1037 const struct rusage *rusage)
1038 {
1039 struct target_rusage *target_rusage;
1040
1041 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
1042 return -TARGET_EFAULT;
1043 target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
1044 target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
1045 target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
1046 target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
1047 target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
1048 target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
1049 target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
1050 target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
1051 target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
1052 target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
1053 target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
1054 target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
1055 target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
1056 target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
1057 target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
1058 target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
1059 target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
1060 target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
1061 unlock_user_struct(target_rusage, target_addr, 1);
1062
1063 return 0;
1064 }
1065
1066 static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
1067 {
1068 abi_ulong target_rlim_swap;
1069 rlim_t result;
1070
1071 target_rlim_swap = tswapal(target_rlim);
1072 if (target_rlim_swap == TARGET_RLIM_INFINITY)
1073 return RLIM_INFINITY;
1074
1075 result = target_rlim_swap;
1076 if (target_rlim_swap != (rlim_t)result)
1077 return RLIM_INFINITY;
1078
1079 return result;
1080 }
1081
1082 static inline abi_ulong host_to_target_rlim(rlim_t rlim)
1083 {
1084 abi_ulong target_rlim_swap;
1085 abi_ulong result;
1086
1087 if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
1088 target_rlim_swap = TARGET_RLIM_INFINITY;
1089 else
1090 target_rlim_swap = rlim;
1091 result = tswapal(target_rlim_swap);
1092
1093 return result;
1094 }
1095
1096 static inline int target_to_host_resource(int code)
1097 {
1098 switch (code) {
1099 case TARGET_RLIMIT_AS:
1100 return RLIMIT_AS;
1101 case TARGET_RLIMIT_CORE:
1102 return RLIMIT_CORE;
1103 case TARGET_RLIMIT_CPU:
1104 return RLIMIT_CPU;
1105 case TARGET_RLIMIT_DATA:
1106 return RLIMIT_DATA;
1107 case TARGET_RLIMIT_FSIZE:
1108 return RLIMIT_FSIZE;
1109 case TARGET_RLIMIT_LOCKS:
1110 return RLIMIT_LOCKS;
1111 case TARGET_RLIMIT_MEMLOCK:
1112 return RLIMIT_MEMLOCK;
1113 case TARGET_RLIMIT_MSGQUEUE:
1114 return RLIMIT_MSGQUEUE;
1115 case TARGET_RLIMIT_NICE:
1116 return RLIMIT_NICE;
1117 case TARGET_RLIMIT_NOFILE:
1118 return RLIMIT_NOFILE;
1119 case TARGET_RLIMIT_NPROC:
1120 return RLIMIT_NPROC;
1121 case TARGET_RLIMIT_RSS:
1122 return RLIMIT_RSS;
1123 case TARGET_RLIMIT_RTPRIO:
1124 return RLIMIT_RTPRIO;
1125 case TARGET_RLIMIT_SIGPENDING:
1126 return RLIMIT_SIGPENDING;
1127 case TARGET_RLIMIT_STACK:
1128 return RLIMIT_STACK;
1129 default:
1130 return code;
1131 }
1132 }
1133
1134 static inline abi_long copy_from_user_timeval(struct timeval *tv,
1135 abi_ulong target_tv_addr)
1136 {
1137 struct target_timeval *target_tv;
1138
1139 if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1))
1140 return -TARGET_EFAULT;
1141
1142 __get_user(tv->tv_sec, &target_tv->tv_sec);
1143 __get_user(tv->tv_usec, &target_tv->tv_usec);
1144
1145 unlock_user_struct(target_tv, target_tv_addr, 0);
1146
1147 return 0;
1148 }
1149
1150 static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
1151 const struct timeval *tv)
1152 {
1153 struct target_timeval *target_tv;
1154
1155 if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0))
1156 return -TARGET_EFAULT;
1157
1158 __put_user(tv->tv_sec, &target_tv->tv_sec);
1159 __put_user(tv->tv_usec, &target_tv->tv_usec);
1160
1161 unlock_user_struct(target_tv, target_tv_addr, 1);
1162
1163 return 0;
1164 }
1165
1166 static inline abi_long copy_from_user_timezone(struct timezone *tz,
1167 abi_ulong target_tz_addr)
1168 {
1169 struct target_timezone *target_tz;
1170
1171 if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) {
1172 return -TARGET_EFAULT;
1173 }
1174
1175 __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest);
1176 __get_user(tz->tz_dsttime, &target_tz->tz_dsttime);
1177
1178 unlock_user_struct(target_tz, target_tz_addr, 0);
1179
1180 return 0;
1181 }
1182
1183 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
1184 #include <mqueue.h>
1185
1186 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
1187 abi_ulong target_mq_attr_addr)
1188 {
1189 struct target_mq_attr *target_mq_attr;
1190
1191 if (!lock_user_struct(VERIFY_READ, target_mq_attr,
1192 target_mq_attr_addr, 1))
1193 return -TARGET_EFAULT;
1194
1195 __get_user(attr->mq_flags, &target_mq_attr->mq_flags);
1196 __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1197 __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1198 __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1199
1200 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
1201
1202 return 0;
1203 }
1204
1205 static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
1206 const struct mq_attr *attr)
1207 {
1208 struct target_mq_attr *target_mq_attr;
1209
1210 if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
1211 target_mq_attr_addr, 0))
1212 return -TARGET_EFAULT;
1213
1214 __put_user(attr->mq_flags, &target_mq_attr->mq_flags);
1215 __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
1216 __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
1217 __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
1218
1219 unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
1220
1221 return 0;
1222 }
1223 #endif
1224
1225 #if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
1226 /* do_select() must return target values and target errnos. */
1227 static abi_long do_select(int n,
1228 abi_ulong rfd_addr, abi_ulong wfd_addr,
1229 abi_ulong efd_addr, abi_ulong target_tv_addr)
1230 {
1231 fd_set rfds, wfds, efds;
1232 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
1233 struct timeval tv;
1234 struct timespec ts, *ts_ptr;
1235 abi_long ret;
1236
1237 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
1238 if (ret) {
1239 return ret;
1240 }
1241 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
1242 if (ret) {
1243 return ret;
1244 }
1245 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
1246 if (ret) {
1247 return ret;
1248 }
1249
1250 if (target_tv_addr) {
1251 if (copy_from_user_timeval(&tv, target_tv_addr))
1252 return -TARGET_EFAULT;
1253 ts.tv_sec = tv.tv_sec;
1254 ts.tv_nsec = tv.tv_usec * 1000;
1255 ts_ptr = &ts;
1256 } else {
1257 ts_ptr = NULL;
1258 }
1259
1260 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
1261 ts_ptr, NULL));
1262
1263 if (!is_error(ret)) {
1264 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
1265 return -TARGET_EFAULT;
1266 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
1267 return -TARGET_EFAULT;
1268 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
1269 return -TARGET_EFAULT;
1270
1271 if (target_tv_addr) {
1272 tv.tv_sec = ts.tv_sec;
1273 tv.tv_usec = ts.tv_nsec / 1000;
1274 if (copy_to_user_timeval(target_tv_addr, &tv)) {
1275 return -TARGET_EFAULT;
1276 }
1277 }
1278 }
1279
1280 return ret;
1281 }
1282
1283 #if defined(TARGET_WANT_OLD_SYS_SELECT)
1284 static abi_long do_old_select(abi_ulong arg1)
1285 {
1286 struct target_sel_arg_struct *sel;
1287 abi_ulong inp, outp, exp, tvp;
1288 long nsel;
1289
1290 if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) {
1291 return -TARGET_EFAULT;
1292 }
1293
1294 nsel = tswapal(sel->n);
1295 inp = tswapal(sel->inp);
1296 outp = tswapal(sel->outp);
1297 exp = tswapal(sel->exp);
1298 tvp = tswapal(sel->tvp);
1299
1300 unlock_user_struct(sel, arg1, 0);
1301
1302 return do_select(nsel, inp, outp, exp, tvp);
1303 }
1304 #endif
1305 #endif
1306
1307 static abi_long do_pipe2(int host_pipe[], int flags)
1308 {
1309 #ifdef CONFIG_PIPE2
1310 return pipe2(host_pipe, flags);
1311 #else
1312 return -ENOSYS;
1313 #endif
1314 }
1315
1316 static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
1317 int flags, int is_pipe2)
1318 {
1319 int host_pipe[2];
1320 abi_long ret;
1321 ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
1322
1323 if (is_error(ret))
1324 return get_errno(ret);
1325
1326 /* Several targets have special calling conventions for the original
1327 pipe syscall, but didn't replicate this into the pipe2 syscall. */
1328 if (!is_pipe2) {
1329 #if defined(TARGET_ALPHA)
1330 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
1331 return host_pipe[0];
1332 #elif defined(TARGET_MIPS)
1333 ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
1334 return host_pipe[0];
1335 #elif defined(TARGET_SH4)
1336 ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
1337 return host_pipe[0];
1338 #elif defined(TARGET_SPARC)
1339 ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
1340 return host_pipe[0];
1341 #endif
1342 }
1343
1344 if (put_user_s32(host_pipe[0], pipedes)
1345 || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
1346 return -TARGET_EFAULT;
1347 return get_errno(ret);
1348 }
1349
1350 static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
1351 abi_ulong target_addr,
1352 socklen_t len)
1353 {
1354 struct target_ip_mreqn *target_smreqn;
1355
1356 target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
1357 if (!target_smreqn)
1358 return -TARGET_EFAULT;
1359 mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
1360 mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
1361 if (len == sizeof(struct target_ip_mreqn))
1362 mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
1363 unlock_user(target_smreqn, target_addr, 0);
1364
1365 return 0;
1366 }
1367
1368 static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
1369 abi_ulong target_addr,
1370 socklen_t len)
1371 {
1372 const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
1373 sa_family_t sa_family;
1374 struct target_sockaddr *target_saddr;
1375
1376 if (fd_trans_target_to_host_addr(fd)) {
1377 return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
1378 }
1379
1380 target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
1381 if (!target_saddr)
1382 return -TARGET_EFAULT;
1383
1384 sa_family = tswap16(target_saddr->sa_family);
1385
1386 /* Oops. The caller might send a incomplete sun_path; sun_path
1387 * must be terminated by \0 (see the manual page), but
1388 * unfortunately it is quite common to specify sockaddr_un
1389 * length as "strlen(x->sun_path)" while it should be
1390 * "strlen(...) + 1". We'll fix that here if needed.
1391 * Linux kernel has a similar feature.
1392 */
1393
1394 if (sa_family == AF_UNIX) {
1395 if (len < unix_maxlen && len > 0) {
1396 char *cp = (char*)target_saddr;
1397
1398 if ( cp[len-1] && !cp[len] )
1399 len++;
1400 }
1401 if (len > unix_maxlen)
1402 len = unix_maxlen;
1403 }
1404
1405 memcpy(addr, target_saddr, len);
1406 addr->sa_family = sa_family;
1407 if (sa_family == AF_NETLINK) {
1408 struct sockaddr_nl *nladdr;
1409
1410 nladdr = (struct sockaddr_nl *)addr;
1411 nladdr->nl_pid = tswap32(nladdr->nl_pid);
1412 nladdr->nl_groups = tswap32(nladdr->nl_groups);
1413 } else if (sa_family == AF_PACKET) {
1414 struct target_sockaddr_ll *lladdr;
1415
1416 lladdr = (struct target_sockaddr_ll *)addr;
1417 lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
1418 lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
1419 }
1420 unlock_user(target_saddr, target_addr, 0);
1421
1422 return 0;
1423 }
1424
1425 static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
1426 struct sockaddr *addr,
1427 socklen_t len)
1428 {
1429 struct target_sockaddr *target_saddr;
1430
1431 if (len == 0) {
1432 return 0;
1433 }
1434 assert(addr);
1435
1436 target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
1437 if (!target_saddr)
1438 return -TARGET_EFAULT;
1439 memcpy(target_saddr, addr, len);
1440 if (len >= offsetof(struct target_sockaddr, sa_family) +
1441 sizeof(target_saddr->sa_family)) {
1442 target_saddr->sa_family = tswap16(addr->sa_family);
1443 }
1444 if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) {
1445 struct sockaddr_nl *target_nl = (struct sockaddr_nl *)target_saddr;
1446 target_nl->nl_pid = tswap32(target_nl->nl_pid);
1447 target_nl->nl_groups = tswap32(target_nl->nl_groups);
1448 } else if (addr->sa_family == AF_PACKET) {
1449 struct sockaddr_ll *target_ll = (struct sockaddr_ll *)target_saddr;
1450 target_ll->sll_ifindex = tswap32(target_ll->sll_ifindex);
1451 target_ll->sll_hatype = tswap16(target_ll->sll_hatype);
1452 } else if (addr->sa_family == AF_INET6 &&
1453 len >= sizeof(struct target_sockaddr_in6)) {
1454 struct target_sockaddr_in6 *target_in6 =
1455 (struct target_sockaddr_in6 *)target_saddr;
1456 target_in6->sin6_scope_id = tswap16(target_in6->sin6_scope_id);
1457 }
1458 unlock_user(target_saddr, target_addr, len);
1459
1460 return 0;
1461 }
1462
1463 static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
1464 struct target_msghdr *target_msgh)
1465 {
1466 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1467 abi_long msg_controllen;
1468 abi_ulong target_cmsg_addr;
1469 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1470 socklen_t space = 0;
1471
1472 msg_controllen = tswapal(target_msgh->msg_controllen);
1473 if (msg_controllen < sizeof (struct target_cmsghdr))
1474 goto the_end;
1475 target_cmsg_addr = tswapal(target_msgh->msg_control);
1476 target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
1477 target_cmsg_start = target_cmsg;
1478 if (!target_cmsg)
1479 return -TARGET_EFAULT;
1480
1481 while (cmsg && target_cmsg) {
1482 void *data = CMSG_DATA(cmsg);
1483 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1484
1485 int len = tswapal(target_cmsg->cmsg_len)
1486 - sizeof(struct target_cmsghdr);
1487
1488 space += CMSG_SPACE(len);
1489 if (space > msgh->msg_controllen) {
1490 space -= CMSG_SPACE(len);
1491 /* This is a QEMU bug, since we allocated the payload
1492 * area ourselves (unlike overflow in host-to-target
1493 * conversion, which is just the guest giving us a buffer
1494 * that's too small). It can't happen for the payload types
1495 * we currently support; if it becomes an issue in future
1496 * we would need to improve our allocation strategy to
1497 * something more intelligent than "twice the size of the
1498 * target buffer we're reading from".
1499 */
1500 gemu_log("Host cmsg overflow\n");
1501 break;
1502 }
1503
1504 if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
1505 cmsg->cmsg_level = SOL_SOCKET;
1506 } else {
1507 cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
1508 }
1509 cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
1510 cmsg->cmsg_len = CMSG_LEN(len);
1511
1512 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1513 int *fd = (int *)data;
1514 int *target_fd = (int *)target_data;
1515 int i, numfds = len / sizeof(int);
1516
1517 for (i = 0; i < numfds; i++) {
1518 __get_user(fd[i], target_fd + i);
1519 }
1520 } else if (cmsg->cmsg_level == SOL_SOCKET
1521 && cmsg->cmsg_type == SCM_CREDENTIALS) {
1522 struct ucred *cred = (struct ucred *)data;
1523 struct target_ucred *target_cred =
1524 (struct target_ucred *)target_data;
1525
1526 __get_user(cred->pid, &target_cred->pid);
1527 __get_user(cred->uid, &target_cred->uid);
1528 __get_user(cred->gid, &target_cred->gid);
1529 } else {
1530 gemu_log("Unsupported ancillary data: %d/%d\n",
1531 cmsg->cmsg_level, cmsg->cmsg_type);
1532 memcpy(data, target_data, len);
1533 }
1534
1535 cmsg = CMSG_NXTHDR(msgh, cmsg);
1536 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1537 target_cmsg_start);
1538 }
1539 unlock_user(target_cmsg, target_cmsg_addr, 0);
1540 the_end:
1541 msgh->msg_controllen = space;
1542 return 0;
1543 }
1544
1545 static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
1546 struct msghdr *msgh)
1547 {
1548 struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
1549 abi_long msg_controllen;
1550 abi_ulong target_cmsg_addr;
1551 struct target_cmsghdr *target_cmsg, *target_cmsg_start;
1552 socklen_t space = 0;
1553
1554 msg_controllen = tswapal(target_msgh->msg_controllen);
1555 if (msg_controllen < sizeof (struct target_cmsghdr))
1556 goto the_end;
1557 target_cmsg_addr = tswapal(target_msgh->msg_control);
1558 target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
1559 target_cmsg_start = target_cmsg;
1560 if (!target_cmsg)
1561 return -TARGET_EFAULT;
1562
1563 while (cmsg && target_cmsg) {
1564 void *data = CMSG_DATA(cmsg);
1565 void *target_data = TARGET_CMSG_DATA(target_cmsg);
1566
1567 int len = cmsg->cmsg_len - sizeof(struct cmsghdr);
1568 int tgt_len, tgt_space;
1569
1570 /* We never copy a half-header but may copy half-data;
1571 * this is Linux's behaviour in put_cmsg(). Note that
1572 * truncation here is a guest problem (which we report
1573 * to the guest via the CTRUNC bit), unlike truncation
1574 * in target_to_host_cmsg, which is a QEMU bug.
1575 */
1576 if (msg_controllen < sizeof(struct target_cmsghdr)) {
1577 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1578 break;
1579 }
1580
1581 if (cmsg->cmsg_level == SOL_SOCKET) {
1582 target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
1583 } else {
1584 target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
1585 }
1586 target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
1587
1588 /* Payload types which need a different size of payload on
1589 * the target must adjust tgt_len here.
1590 */
1591 tgt_len = len;
1592 switch (cmsg->cmsg_level) {
1593 case SOL_SOCKET:
1594 switch (cmsg->cmsg_type) {
1595 case SO_TIMESTAMP:
1596 tgt_len = sizeof(struct target_timeval);
1597 break;
1598 default:
1599 break;
1600 }
1601 break;
1602 default:
1603 break;
1604 }
1605
1606 if (msg_controllen < TARGET_CMSG_LEN(tgt_len)) {
1607 target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
1608 tgt_len = msg_controllen - sizeof(struct target_cmsghdr);
1609 }
1610
1611 /* We must now copy-and-convert len bytes of payload
1612 * into tgt_len bytes of destination space. Bear in mind
1613 * that in both source and destination we may be dealing
1614 * with a truncated value!
1615 */
1616 switch (cmsg->cmsg_level) {
1617 case SOL_SOCKET:
1618 switch (cmsg->cmsg_type) {
1619 case SCM_RIGHTS:
1620 {
1621 int *fd = (int *)data;
1622 int *target_fd = (int *)target_data;
1623 int i, numfds = tgt_len / sizeof(int);
1624
1625 for (i = 0; i < numfds; i++) {
1626 __put_user(fd[i], target_fd + i);
1627 }
1628 break;
1629 }
1630 case SO_TIMESTAMP:
1631 {
1632 struct timeval *tv = (struct timeval *)data;
1633 struct target_timeval *target_tv =
1634 (struct target_timeval *)target_data;
1635
1636 if (len != sizeof(struct timeval) ||
1637 tgt_len != sizeof(struct target_timeval)) {
1638 goto unimplemented;
1639 }
1640
1641 /* copy struct timeval to target */
1642 __put_user(tv->tv_sec, &target_tv->tv_sec);
1643 __put_user(tv->tv_usec, &target_tv->tv_usec);
1644 break;
1645 }
1646 case SCM_CREDENTIALS:
1647 {
1648 struct ucred *cred = (struct ucred *)data;
1649 struct target_ucred *target_cred =
1650 (struct target_ucred *)target_data;
1651
1652 __put_user(cred->pid, &target_cred->pid);
1653 __put_user(cred->uid, &target_cred->uid);
1654 __put_user(cred->gid, &target_cred->gid);
1655 break;
1656 }
1657 default:
1658 goto unimplemented;
1659 }
1660 break;
1661
1662 case SOL_IP:
1663 switch (cmsg->cmsg_type) {
1664 case IP_TTL:
1665 {
1666 uint32_t *v = (uint32_t *)data;
1667 uint32_t *t_int = (uint32_t *)target_data;
1668
1669 if (len != sizeof(uint32_t) ||
1670 tgt_len != sizeof(uint32_t)) {
1671 goto unimplemented;
1672 }
1673 __put_user(*v, t_int);
1674 break;
1675 }
1676 case IP_RECVERR:
1677 {
1678 struct errhdr_t {
1679 struct sock_extended_err ee;
1680 struct sockaddr_in offender;
1681 };
1682 struct errhdr_t *errh = (struct errhdr_t *)data;
1683 struct errhdr_t *target_errh =
1684 (struct errhdr_t *)target_data;
1685
1686 if (len != sizeof(struct errhdr_t) ||
1687 tgt_len != sizeof(struct errhdr_t)) {
1688 goto unimplemented;
1689 }
1690 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1691 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1692 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1693 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1694 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1695 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1696 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1697 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1698 (void *) &errh->offender, sizeof(errh->offender));
1699 break;
1700 }
1701 default:
1702 goto unimplemented;
1703 }
1704 break;
1705
1706 case SOL_IPV6:
1707 switch (cmsg->cmsg_type) {
1708 case IPV6_HOPLIMIT:
1709 {
1710 uint32_t *v = (uint32_t *)data;
1711 uint32_t *t_int = (uint32_t *)target_data;
1712
1713 if (len != sizeof(uint32_t) ||
1714 tgt_len != sizeof(uint32_t)) {
1715 goto unimplemented;
1716 }
1717 __put_user(*v, t_int);
1718 break;
1719 }
1720 case IPV6_RECVERR:
1721 {
1722 struct errhdr6_t {
1723 struct sock_extended_err ee;
1724 struct sockaddr_in6 offender;
1725 };
1726 struct errhdr6_t *errh = (struct errhdr6_t *)data;
1727 struct errhdr6_t *target_errh =
1728 (struct errhdr6_t *)target_data;
1729
1730 if (len != sizeof(struct errhdr6_t) ||
1731 tgt_len != sizeof(struct errhdr6_t)) {
1732 goto unimplemented;
1733 }
1734 __put_user(errh->ee.ee_errno, &target_errh->ee.ee_errno);
1735 __put_user(errh->ee.ee_origin, &target_errh->ee.ee_origin);
1736 __put_user(errh->ee.ee_type, &target_errh->ee.ee_type);
1737 __put_user(errh->ee.ee_code, &target_errh->ee.ee_code);
1738 __put_user(errh->ee.ee_pad, &target_errh->ee.ee_pad);
1739 __put_user(errh->ee.ee_info, &target_errh->ee.ee_info);
1740 __put_user(errh->ee.ee_data, &target_errh->ee.ee_data);
1741 host_to_target_sockaddr((unsigned long) &target_errh->offender,
1742 (void *) &errh->offender, sizeof(errh->offender));
1743 break;
1744 }
1745 default:
1746 goto unimplemented;
1747 }
1748 break;
1749
1750 default:
1751 unimplemented:
1752 gemu_log("Unsupported ancillary data: %d/%d\n",
1753 cmsg->cmsg_level, cmsg->cmsg_type);
1754 memcpy(target_data, data, MIN(len, tgt_len));
1755 if (tgt_len > len) {
1756 memset(target_data + len, 0, tgt_len - len);
1757 }
1758 }
1759
1760 target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(tgt_len));
1761 tgt_space = TARGET_CMSG_SPACE(tgt_len);
1762 if (msg_controllen < tgt_space) {
1763 tgt_space = msg_controllen;
1764 }
1765 msg_controllen -= tgt_space;
1766 space += tgt_space;
1767 cmsg = CMSG_NXTHDR(msgh, cmsg);
1768 target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
1769 target_cmsg_start);
1770 }
1771 unlock_user(target_cmsg, target_cmsg_addr, space);
1772 the_end:
1773 target_msgh->msg_controllen = tswapal(space);
1774 return 0;
1775 }
1776
1777 /* do_setsockopt() Must return target values and target errnos. */
1778 static abi_long do_setsockopt(int sockfd, int level, int optname,
1779 abi_ulong optval_addr, socklen_t optlen)
1780 {
1781 abi_long ret;
1782 int val;
1783 struct ip_mreqn *ip_mreq;
1784 struct ip_mreq_source *ip_mreq_source;
1785
1786 switch(level) {
1787 case SOL_TCP:
1788 /* TCP options all take an 'int' value. */
1789 if (optlen < sizeof(uint32_t))
1790 return -TARGET_EINVAL;
1791
1792 if (get_user_u32(val, optval_addr))
1793 return -TARGET_EFAULT;
1794 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1795 break;
1796 case SOL_IP:
1797 switch(optname) {
1798 case IP_TOS:
1799 case IP_TTL:
1800 case IP_HDRINCL:
1801 case IP_ROUTER_ALERT:
1802 case IP_RECVOPTS:
1803 case IP_RETOPTS:
1804 case IP_PKTINFO:
1805 case IP_MTU_DISCOVER:
1806 case IP_RECVERR:
1807 case IP_RECVTTL:
1808 case IP_RECVTOS:
1809 #ifdef IP_FREEBIND
1810 case IP_FREEBIND:
1811 #endif
1812 case IP_MULTICAST_TTL:
1813 case IP_MULTICAST_LOOP:
1814 val = 0;
1815 if (optlen >= sizeof(uint32_t)) {
1816 if (get_user_u32(val, optval_addr))
1817 return -TARGET_EFAULT;
1818 } else if (optlen >= 1) {
1819 if (get_user_u8(val, optval_addr))
1820 return -TARGET_EFAULT;
1821 }
1822 ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
1823 break;
1824 case IP_ADD_MEMBERSHIP:
1825 case IP_DROP_MEMBERSHIP:
1826 if (optlen < sizeof (struct target_ip_mreq) ||
1827 optlen > sizeof (struct target_ip_mreqn))
1828 return -TARGET_EINVAL;
1829
1830 ip_mreq = (struct ip_mreqn *) alloca(optlen);
1831 target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
1832 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
1833 break;
1834
1835 case IP_BLOCK_SOURCE:
1836 case IP_UNBLOCK_SOURCE:
1837 case IP_ADD_SOURCE_MEMBERSHIP:
1838 case IP_DROP_SOURCE_MEMBERSHIP:
1839 if (optlen != sizeof (struct target_ip_mreq_source))
1840 return -TARGET_EINVAL;
1841
1842 ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
1843 ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
1844 unlock_user (ip_mreq_source, optval_addr, 0);
1845 break;
1846
1847 default:
1848 goto unimplemented;
1849 }
1850 break;
1851 case SOL_IPV6:
1852 switch (optname) {
1853 case IPV6_MTU_DISCOVER:
1854 case IPV6_MTU:
1855 case IPV6_V6ONLY:
1856 case IPV6_RECVPKTINFO:
1857 case IPV6_UNICAST_HOPS:
1858 case IPV6_MULTICAST_HOPS:
1859 case IPV6_MULTICAST_LOOP:
1860 case IPV6_RECVERR:
1861 case IPV6_RECVHOPLIMIT:
1862 case IPV6_2292HOPLIMIT:
1863 case IPV6_CHECKSUM:
1864 case IPV6_ADDRFORM:
1865 case IPV6_2292PKTINFO:
1866 case IPV6_RECVTCLASS:
1867 case IPV6_RECVRTHDR:
1868 case IPV6_2292RTHDR:
1869 case IPV6_RECVHOPOPTS:
1870 case IPV6_2292HOPOPTS:
1871 case IPV6_RECVDSTOPTS:
1872 case IPV6_2292DSTOPTS:
1873 case IPV6_TCLASS:
1874 #ifdef IPV6_RECVPATHMTU
1875 case IPV6_RECVPATHMTU:
1876 #endif
1877 #ifdef IPV6_TRANSPARENT
1878 case IPV6_TRANSPARENT:
1879 #endif
1880 #ifdef IPV6_FREEBIND
1881 case IPV6_FREEBIND:
1882 #endif
1883 #ifdef IPV6_RECVORIGDSTADDR
1884 case IPV6_RECVORIGDSTADDR:
1885 #endif
1886 val = 0;
1887 if (optlen < sizeof(uint32_t)) {
1888 return -TARGET_EINVAL;
1889 }
1890 if (get_user_u32(val, optval_addr)) {
1891 return -TARGET_EFAULT;
1892 }
1893 ret = get_errno(setsockopt(sockfd, level, optname,
1894 &val, sizeof(val)));
1895 break;
1896 case IPV6_PKTINFO:
1897 {
1898 struct in6_pktinfo pki;
1899
1900 if (optlen < sizeof(pki)) {
1901 return -TARGET_EINVAL;
1902 }
1903
1904 if (copy_from_user(&pki, optval_addr, sizeof(pki))) {
1905 return -TARGET_EFAULT;
1906 }
1907
1908 pki.ipi6_ifindex = tswap32(pki.ipi6_ifindex);
1909
1910 ret = get_errno(setsockopt(sockfd, level, optname,
1911 &pki, sizeof(pki)));
1912 break;
1913 }
1914 default:
1915 goto unimplemented;
1916 }
1917 break;
1918 case SOL_ICMPV6:
1919 switch (optname) {
1920 case ICMPV6_FILTER:
1921 {
1922 struct icmp6_filter icmp6f;
1923
1924 if (optlen > sizeof(icmp6f)) {
1925 optlen = sizeof(icmp6f);
1926 }
1927
1928 if (copy_from_user(&icmp6f, optval_addr, optlen)) {
1929 return -TARGET_EFAULT;
1930 }
1931
1932 for (val = 0; val < 8; val++) {
1933 icmp6f.data[val] = tswap32(icmp6f.data[val]);
1934 }
1935
1936 ret = get_errno(setsockopt(sockfd, level, optname,
1937 &icmp6f, optlen));
1938 break;
1939 }
1940 default:
1941 goto unimplemented;
1942 }
1943 break;
1944 case SOL_RAW:
1945 switch (optname) {
1946 case ICMP_FILTER:
1947 case IPV6_CHECKSUM:
1948 /* those take an u32 value */
1949 if (optlen < sizeof(uint32_t)) {
1950 return -TARGET_EINVAL;
1951 }
1952
1953 if (get_user_u32(val, optval_addr)) {
1954 return -TARGET_EFAULT;
1955 }
1956 ret = get_errno(setsockopt(sockfd, level, optname,
1957 &val, sizeof(val)));
1958 break;
1959
1960 default:
1961 goto unimplemented;
1962 }
1963 break;
1964 case TARGET_SOL_SOCKET:
1965 switch (optname) {
1966 case TARGET_SO_RCVTIMEO:
1967 {
1968 struct timeval tv;
1969
1970 optname = SO_RCVTIMEO;
1971
1972 set_timeout:
1973 if (optlen != sizeof(struct target_timeval)) {
1974 return -TARGET_EINVAL;
1975 }
1976
1977 if (copy_from_user_timeval(&tv, optval_addr)) {
1978 return -TARGET_EFAULT;
1979 }
1980
1981 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
1982 &tv, sizeof(tv)));
1983 return ret;
1984 }
1985 case TARGET_SO_SNDTIMEO:
1986 optname = SO_SNDTIMEO;
1987 goto set_timeout;
1988 case TARGET_SO_ATTACH_FILTER:
1989 {
1990 struct target_sock_fprog *tfprog;
1991 struct target_sock_filter *tfilter;
1992 struct sock_fprog fprog;
1993 struct sock_filter *filter;
1994 int i;
1995
1996 if (optlen != sizeof(*tfprog)) {
1997 return -TARGET_EINVAL;
1998 }
1999 if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
2000 return -TARGET_EFAULT;
2001 }
2002 if (!lock_user_struct(VERIFY_READ, tfilter,
2003 tswapal(tfprog->filter), 0)) {
2004 unlock_user_struct(tfprog, optval_addr, 1);
2005 return -TARGET_EFAULT;
2006 }
2007
2008 fprog.len = tswap16(tfprog->len);
2009 filter = g_try_new(struct sock_filter, fprog.len);
2010 if (filter == NULL) {
2011 unlock_user_struct(tfilter, tfprog->filter, 1);
2012 unlock_user_struct(tfprog, optval_addr, 1);
2013 return -TARGET_ENOMEM;
2014 }
2015 for (i = 0; i < fprog.len; i++) {
2016 filter[i].code = tswap16(tfilter[i].code);
2017 filter[i].jt = tfilter[i].jt;
2018 filter[i].jf = tfilter[i].jf;
2019 filter[i].k = tswap32(tfilter[i].k);
2020 }
2021 fprog.filter = filter;
2022
2023 ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
2024 SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
2025 g_free(filter);
2026
2027 unlock_user_struct(tfilter, tfprog->filter, 1);
2028 unlock_user_struct(tfprog, optval_addr, 1);
2029 return ret;
2030 }
2031 case TARGET_SO_BINDTODEVICE:
2032 {
2033 char *dev_ifname, *addr_ifname;
2034
2035 if (optlen > IFNAMSIZ - 1) {
2036 optlen = IFNAMSIZ - 1;
2037 }
2038 dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1);
2039 if (!dev_ifname) {
2040 return -TARGET_EFAULT;
2041 }
2042 optname = SO_BINDTODEVICE;
2043 addr_ifname = alloca(IFNAMSIZ);
2044 memcpy(addr_ifname, dev_ifname, optlen);
2045 addr_ifname[optlen] = 0;
2046 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
2047 addr_ifname, optlen));
2048 unlock_user (dev_ifname, optval_addr, 0);
2049 return ret;
2050 }
2051 case TARGET_SO_LINGER:
2052 {
2053 struct linger lg;
2054 struct target_linger *tlg;
2055
2056 if (optlen != sizeof(struct target_linger)) {
2057 return -TARGET_EINVAL;
2058 }
2059 if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
2060 return -TARGET_EFAULT;
2061 }
2062 __get_user(lg.l_onoff, &tlg->l_onoff);
2063 __get_user(lg.l_linger, &tlg->l_linger);
2064 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
2065 &lg, sizeof(lg)));
2066 unlock_user_struct(tlg, optval_addr, 0);
2067 return ret;
2068 }
2069 /* Options with 'int' argument. */
2070 case TARGET_SO_DEBUG:
2071 optname = SO_DEBUG;
2072 break;
2073 case TARGET_SO_REUSEADDR:
2074 optname = SO_REUSEADDR;
2075 break;
2076 #ifdef SO_REUSEPORT
2077 case TARGET_SO_REUSEPORT:
2078 optname = SO_REUSEPORT;
2079 break;
2080 #endif
2081 case TARGET_SO_TYPE:
2082 optname = SO_TYPE;
2083 break;
2084 case TARGET_SO_ERROR:
2085 optname = SO_ERROR;
2086 break;
2087 case TARGET_SO_DONTROUTE:
2088 optname = SO_DONTROUTE;
2089 break;
2090 case TARGET_SO_BROADCAST:
2091 optname = SO_BROADCAST;
2092 break;
2093 case TARGET_SO_SNDBUF:
2094 optname = SO_SNDBUF;
2095 break;
2096 case TARGET_SO_SNDBUFFORCE:
2097 optname = SO_SNDBUFFORCE;
2098 break;
2099 case TARGET_SO_RCVBUF:
2100 optname = SO_RCVBUF;
2101 break;
2102 case TARGET_SO_RCVBUFFORCE:
2103 optname = SO_RCVBUFFORCE;
2104 break;
2105 case TARGET_SO_KEEPALIVE:
2106 optname = SO_KEEPALIVE;
2107 break;
2108 case TARGET_SO_OOBINLINE:
2109 optname = SO_OOBINLINE;
2110 break;
2111 case TARGET_SO_NO_CHECK:
2112 optname = SO_NO_CHECK;
2113 break;
2114 case TARGET_SO_PRIORITY:
2115 optname = SO_PRIORITY;
2116 break;
2117 #ifdef SO_BSDCOMPAT
2118 case TARGET_SO_BSDCOMPAT:
2119 optname = SO_BSDCOMPAT;
2120 break;
2121 #endif
2122 case TARGET_SO_PASSCRED:
2123 optname = SO_PASSCRED;
2124 break;
2125 case TARGET_SO_PASSSEC:
2126 optname = SO_PASSSEC;
2127 break;
2128 case TARGET_SO_TIMESTAMP:
2129 optname = SO_TIMESTAMP;
2130 break;
2131 case TARGET_SO_RCVLOWAT:
2132 optname = SO_RCVLOWAT;
2133 break;
2134 default:
2135 goto unimplemented;
2136 }
2137 if (optlen < sizeof(uint32_t))
2138 return -TARGET_EINVAL;
2139
2140 if (get_user_u32(val, optval_addr))
2141 return -TARGET_EFAULT;
2142 ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
2143 break;
2144 default:
2145 unimplemented:
2146 gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname);
2147 ret = -TARGET_ENOPROTOOPT;
2148 }
2149 return ret;
2150 }
2151
2152 /* do_getsockopt() Must return target values and target errnos. */
2153 static abi_long do_getsockopt(int sockfd, int level, int optname,
2154 abi_ulong optval_addr, abi_ulong optlen)
2155 {
2156 abi_long ret;
2157 int len, val;
2158 socklen_t lv;
2159
2160 switch(level) {
2161 case TARGET_SOL_SOCKET:
2162 level = SOL_SOCKET;
2163 switch (optname) {
2164 /* These don't just return a single integer */
2165 case TARGET_SO_RCVTIMEO:
2166 case TARGET_SO_SNDTIMEO:
2167 case TARGET_SO_PEERNAME:
2168 goto unimplemented;
2169 case TARGET_SO_PEERCRED: {
2170 struct ucred cr;
2171 socklen_t crlen;
2172 struct target_ucred *tcr;
2173
2174 if (get_user_u32(len, optlen)) {
2175 return -TARGET_EFAULT;
2176 }
2177 if (len < 0) {
2178 return -TARGET_EINVAL;
2179 }
2180
2181 crlen = sizeof(cr);
2182 ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
2183 &cr, &crlen));
2184 if (ret < 0) {
2185 return ret;
2186 }
2187 if (len > crlen) {
2188 len = crlen;
2189 }
2190 if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
2191 return -TARGET_EFAULT;
2192 }
2193 __put_user(cr.pid, &tcr->pid);
2194 __put_user(cr.uid, &tcr->uid);
2195 __put_user(cr.gid, &tcr->gid);
2196 unlock_user_struct(tcr, optval_addr, 1);
2197 if (put_user_u32(len, optlen)) {
2198 return -TARGET_EFAULT;
2199 }
2200 break;
2201 }
2202 case TARGET_SO_LINGER:
2203 {
2204 struct linger lg;
2205 socklen_t lglen;
2206 struct target_linger *tlg;
2207
2208 if (get_user_u32(len, optlen)) {
2209 return -TARGET_EFAULT;
2210 }
2211 if (len < 0) {
2212 return -TARGET_EINVAL;
2213 }
2214
2215 lglen = sizeof(lg);
2216 ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
2217 &lg, &lglen));
2218 if (ret < 0) {
2219 return ret;
2220 }
2221 if (len > lglen) {
2222 len = lglen;
2223 }
2224 if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
2225 return -TARGET_EFAULT;
2226 }
2227 __put_user(lg.l_onoff, &tlg->l_onoff);
2228 __put_user(lg.l_linger, &tlg->l_linger);
2229 unlock_user_struct(tlg, optval_addr, 1);
2230 if (put_user_u32(len, optlen)) {
2231 return -TARGET_EFAULT;
2232 }
2233 break;
2234 }
2235 /* Options with 'int' argument. */
2236 case TARGET_SO_DEBUG:
2237 optname = SO_DEBUG;
2238 goto int_case;
2239 case TARGET_SO_REUSEADDR:
2240 optname = SO_REUSEADDR;
2241 goto int_case;
2242 #ifdef SO_REUSEPORT
2243 case TARGET_SO_REUSEPORT:
2244 optname = SO_REUSEPORT;
2245 goto int_case;
2246 #endif
2247 case TARGET_SO_TYPE:
2248 optname = SO_TYPE;
2249 goto int_case;
2250 case TARGET_SO_ERROR:
2251 optname = SO_ERROR;
2252 goto int_case;
2253 case TARGET_SO_DONTROUTE:
2254 optname = SO_DONTROUTE;
2255 goto int_case;
2256 case TARGET_SO_BROADCAST:
2257 optname = SO_BROADCAST;
2258 goto int_case;
2259 case TARGET_SO_SNDBUF:
2260 optname = SO_SNDBUF;
2261 goto int_case;
2262 case TARGET_SO_RCVBUF:
2263 optname = SO_RCVBUF;
2264 goto int_case;
2265 case TARGET_SO_KEEPALIVE:
2266 optname = SO_KEEPALIVE;
2267 goto int_case;
2268 case TARGET_SO_OOBINLINE:
2269 optname = SO_OOBINLINE;
2270 goto int_case;
2271 case TARGET_SO_NO_CHECK:
2272 optname = SO_NO_CHECK;
2273 goto int_case;
2274 case TARGET_SO_PRIORITY:
2275 optname = SO_PRIORITY;
2276 goto int_case;
2277 #ifdef SO_BSDCOMPAT
2278 case TARGET_SO_BSDCOMPAT:
2279 optname = SO_BSDCOMPAT;
2280 goto int_case;
2281 #endif
2282 case TARGET_SO_PASSCRED:
2283 optname = SO_PASSCRED;
2284 goto int_case;
2285 case TARGET_SO_TIMESTAMP:
2286 optname = SO_TIMESTAMP;
2287 goto int_case;
2288 case TARGET_SO_RCVLOWAT:
2289 optname = SO_RCVLOWAT;
2290 goto int_case;
2291 case TARGET_SO_ACCEPTCONN:
2292 optname = SO_ACCEPTCONN;
2293 goto int_case;
2294 default:
2295 goto int_case;
2296 }
2297 break;
2298 case SOL_TCP:
2299 /* TCP options all take an 'int' value. */
2300 int_case:
2301 if (get_user_u32(len, optlen))
2302 return -TARGET_EFAULT;
2303 if (len < 0)
2304 return -TARGET_EINVAL;
2305 lv = sizeof(lv);
2306 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2307 if (ret < 0)
2308 return ret;
2309 if (optname == SO_TYPE) {
2310 val = host_to_target_sock_type(val);
2311 }
2312 if (len > lv)
2313 len = lv;
2314 if (len == 4) {
2315 if (put_user_u32(val, optval_addr))
2316 return -TARGET_EFAULT;
2317 } else {
2318 if (put_user_u8(val, optval_addr))
2319 return -TARGET_EFAULT;
2320 }
2321 if (put_user_u32(len, optlen))
2322 return -TARGET_EFAULT;
2323 break;
2324 case SOL_IP:
2325 switch(optname) {
2326 case IP_TOS:
2327 case IP_TTL:
2328 case IP_HDRINCL:
2329 case IP_ROUTER_ALERT:
2330 case IP_RECVOPTS:
2331 case IP_RETOPTS:
2332 case IP_PKTINFO:
2333 case IP_MTU_DISCOVER:
2334 case IP_RECVERR:
2335 case IP_RECVTOS:
2336 #ifdef IP_FREEBIND
2337 case IP_FREEBIND:
2338 #endif
2339 case IP_MULTICAST_TTL:
2340 case IP_MULTICAST_LOOP:
2341 if (get_user_u32(len, optlen))
2342 return -TARGET_EFAULT;
2343 if (len < 0)
2344 return -TARGET_EINVAL;
2345 lv = sizeof(lv);
2346 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2347 if (ret < 0)
2348 return ret;
2349 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2350 len = 1;
2351 if (put_user_u32(len, optlen)
2352 || put_user_u8(val, optval_addr))
2353 return -TARGET_EFAULT;
2354 } else {
2355 if (len > sizeof(int))
2356 len = sizeof(int);
2357 if (put_user_u32(len, optlen)
2358 || put_user_u32(val, optval_addr))
2359 return -TARGET_EFAULT;
2360 }
2361 break;
2362 default:
2363 ret = -TARGET_ENOPROTOOPT;
2364 break;
2365 }
2366 break;
2367 case SOL_IPV6:
2368 switch (optname) {
2369 case IPV6_MTU_DISCOVER:
2370 case IPV6_MTU:
2371 case IPV6_V6ONLY:
2372 case IPV6_RECVPKTINFO:
2373 case IPV6_UNICAST_HOPS:
2374 case IPV6_MULTICAST_HOPS:
2375 case IPV6_MULTICAST_LOOP:
2376 case IPV6_RECVERR:
2377 case IPV6_RECVHOPLIMIT:
2378 case IPV6_2292HOPLIMIT:
2379 case IPV6_CHECKSUM:
2380 case IPV6_ADDRFORM:
2381 case IPV6_2292PKTINFO:
2382 case IPV6_RECVTCLASS:
2383 case IPV6_RECVRTHDR:
2384 case IPV6_2292RTHDR:
2385 case IPV6_RECVHOPOPTS:
2386 case IPV6_2292HOPOPTS:
2387 case IPV6_RECVDSTOPTS:
2388 case IPV6_2292DSTOPTS:
2389 case IPV6_TCLASS:
2390 #ifdef IPV6_RECVPATHMTU
2391 case IPV6_RECVPATHMTU:
2392 #endif
2393 #ifdef IPV6_TRANSPARENT
2394 case IPV6_TRANSPARENT:
2395 #endif
2396 #ifdef IPV6_FREEBIND
2397 case IPV6_FREEBIND:
2398 #endif
2399 #ifdef IPV6_RECVORIGDSTADDR
2400 case IPV6_RECVORIGDSTADDR:
2401 #endif
2402 if (get_user_u32(len, optlen))
2403 return -TARGET_EFAULT;
2404 if (len < 0)
2405 return -TARGET_EINVAL;
2406 lv = sizeof(lv);
2407 ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
2408 if (ret < 0)
2409 return ret;
2410 if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
2411 len = 1;
2412 if (put_user_u32(len, optlen)
2413 || put_user_u8(val, optval_addr))
2414 return -TARGET_EFAULT;
2415 } else {
2416 if (len > sizeof(int))
2417 len = sizeof(int);
2418 if (put_user_u32(len, optlen)
2419 || put_user_u32(val, optval_addr))
2420 return -TARGET_EFAULT;
2421 }
2422 break;
2423 default:
2424 ret = -TARGET_ENOPROTOOPT;
2425 break;
2426 }
2427 break;
2428 default:
2429 unimplemented:
2430 gemu_log("getsockopt level=%d optname=%d not yet supported\n",
2431 level, optname);
2432 ret = -TARGET_EOPNOTSUPP;
2433 break;
2434 }
2435 return ret;
2436 }
2437
2438 /* Convert target low/high pair representing file offset into the host
2439 * low/high pair. This function doesn't handle offsets bigger than 64 bits
2440 * as the kernel doesn't handle them either.
2441 */
2442 static void target_to_host_low_high(abi_ulong tlow,
2443 abi_ulong thigh,
2444 unsigned long *hlow,
2445 unsigned long *hhigh)
2446 {
2447 uint64_t off = tlow |
2448 ((unsigned long long)thigh << TARGET_LONG_BITS / 2) <<
2449 TARGET_LONG_BITS / 2;
2450
2451 *hlow = off;
2452 *hhigh = (off >> HOST_LONG_BITS / 2) >> HOST_LONG_BITS / 2;
2453 }
2454
2455 static struct iovec *lock_iovec(int type, abi_ulong target_addr,
2456 abi_ulong count, int copy)
2457 {
2458 struct target_iovec *target_vec;
2459 struct iovec *vec;
2460 abi_ulong total_len, max_len;
2461 int i;
2462 int err = 0;
2463 bool bad_address = false;
2464
2465 if (count == 0) {
2466 errno = 0;
2467 return NULL;
2468 }
2469 if (count > IOV_MAX) {
2470 errno = EINVAL;
2471 return NULL;
2472 }
2473
2474 vec = g_try_new0(struct iovec, count);
2475 if (vec == NULL) {
2476 errno = ENOMEM;
2477 return NULL;
2478 }
2479
2480 target_vec = lock_user(VERIFY_READ, target_addr,
2481 count * sizeof(struct target_iovec), 1);
2482 if (target_vec == NULL) {
2483 err = EFAULT;
2484 goto fail2;
2485 }
2486
2487 /* ??? If host page size > target page size, this will result in a
2488 value larger than what we can actually support. */
2489 max_len = 0x7fffffff & TARGET_PAGE_MASK;
2490 total_len = 0;
2491
2492 for (i = 0; i < count; i++) {
2493 abi_ulong base = tswapal(target_vec[i].iov_base);
2494 abi_long len = tswapal(target_vec[i].iov_len);
2495
2496 if (len < 0) {
2497 err = EINVAL;
2498 goto fail;
2499 } else if (len == 0) {
2500 /* Zero length pointer is ignored. */
2501 vec[i].iov_base = 0;
2502 } else {
2503 vec[i].iov_base = lock_user(type, base, len, copy);
2504 /* If the first buffer pointer is bad, this is a fault. But
2505 * subsequent bad buffers will result in a partial write; this
2506 * is realized by filling the vector with null pointers and
2507 * zero lengths. */
2508 if (!vec[i].iov_base) {
2509 if (i == 0) {
2510 err = EFAULT;
2511 goto fail;
2512 } else {
2513 bad_address = true;
2514 }
2515 }
2516 if (bad_address) {
2517 len = 0;
2518 }
2519 if (len > max_len - total_len) {
2520 len = max_len - total_len;
2521 }
2522 }
2523 vec[i].iov_len = len;
2524 total_len += len;
2525 }
2526
2527 unlock_user(target_vec, target_addr, 0);
2528 return vec;
2529
2530 fail:
2531 while (--i >= 0) {
2532 if (tswapal(target_vec[i].iov_len) > 0) {
2533 unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
2534 }
2535 }
2536 unlock_user(target_vec, target_addr, 0);
2537 fail2:
2538 g_free(vec);
2539 errno = err;
2540 return NULL;
2541 }
2542
2543 static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
2544 abi_ulong count, int copy)
2545 {
2546 struct target_iovec *target_vec;
2547 int i;
2548
2549 target_vec = lock_user(VERIFY_READ, target_addr,
2550 count * sizeof(struct target_iovec), 1);
2551 if (target_vec) {
2552 for (i = 0; i < count; i++) {
2553 abi_ulong base = tswapal(target_vec[i].iov_base);
2554 abi_long len = tswapal(target_vec[i].iov_len);
2555 if (len < 0) {
2556 break;
2557 }
2558 unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
2559 }
2560 unlock_user(target_vec, target_addr, 0);
2561 }
2562
2563 g_free(vec);
2564 }
2565
2566 static inline int target_to_host_sock_type(int *type)
2567 {
2568 int host_type = 0;
2569 int target_type = *type;
2570
2571 switch (target_type & TARGET_SOCK_TYPE_MASK) {
2572 case TARGET_SOCK_DGRAM:
2573 host_type = SOCK_DGRAM;
2574 break;
2575 case TARGET_SOCK_STREAM:
2576 host_type = SOCK_STREAM;
2577 break;
2578 default:
2579 host_type = target_type & TARGET_SOCK_TYPE_MASK;
2580 break;
2581 }
2582 if (target_type & TARGET_SOCK_CLOEXEC) {
2583 #if defined(SOCK_CLOEXEC)
2584 host_type |= SOCK_CLOEXEC;
2585 #else
2586 return -TARGET_EINVAL;
2587 #endif
2588 }
2589 if (target_type & TARGET_SOCK_NONBLOCK) {
2590 #if defined(SOCK_NONBLOCK)
2591 host_type |= SOCK_NONBLOCK;
2592 #elif !defined(O_NONBLOCK)
2593 return -TARGET_EINVAL;
2594 #endif
2595 }
2596 *type = host_type;
2597 return 0;
2598 }
2599
2600 /* Try to emulate socket type flags after socket creation. */
2601 static int sock_flags_fixup(int fd, int target_type)
2602 {
2603 #if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
2604 if (target_type & TARGET_SOCK_NONBLOCK) {
2605 int flags = fcntl(fd, F_GETFL);
2606 if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
2607 close(fd);
2608 return -TARGET_EINVAL;
2609 }
2610 }
2611 #endif
2612 return fd;
2613 }
2614
2615 /* do_socket() Must return target values and target errnos. */
2616 static abi_long do_socket(int domain, int type, int protocol)
2617 {
2618 int target_type = type;
2619 int ret;
2620
2621 ret = target_to_host_sock_type(&type);
2622 if (ret) {
2623 return ret;
2624 }
2625
2626 if (domain == PF_NETLINK && !(
2627 #ifdef CONFIG_RTNETLINK
2628 protocol == NETLINK_ROUTE ||
2629 #endif
2630 protocol == NETLINK_KOBJECT_UEVENT ||
2631 protocol == NETLINK_AUDIT)) {
2632 return -EPFNOSUPPORT;
2633 }
2634
2635 if (domain == AF_PACKET ||
2636 (domain == AF_INET && type == SOCK_PACKET)) {
2637 protocol = tswap16(protocol);
2638 }
2639
2640 ret = get_errno(socket(domain, type, protocol));
2641 if (ret >= 0) {
2642 ret = sock_flags_fixup(ret, target_type);
2643 if (type == SOCK_PACKET) {
2644 /* Manage an obsolete case :
2645 * if socket type is SOCK_PACKET, bind by name
2646 */
2647 fd_trans_register(ret, &target_packet_trans);
2648 } else if (domain == PF_NETLINK) {
2649 switch (protocol) {
2650 #ifdef CONFIG_RTNETLINK
2651 case NETLINK_ROUTE:
2652 fd_trans_register(ret, &target_netlink_route_trans);
2653 break;
2654 #endif
2655 case NETLINK_KOBJECT_UEVENT:
2656 /* nothing to do: messages are strings */
2657 break;
2658 case NETLINK_AUDIT:
2659 fd_trans_register(ret, &target_netlink_audit_trans);
2660 break;
2661 default:
2662 g_assert_not_reached();
2663 }
2664 }
2665 }
2666 return ret;
2667 }
2668
2669 /* do_bind() Must return target values and target errnos. */
2670 static abi_long do_bind(int sockfd, abi_ulong target_addr,
2671 socklen_t addrlen)
2672 {
2673 void *addr;
2674 abi_long ret;
2675
2676 if ((int)addrlen < 0) {
2677 return -TARGET_EINVAL;
2678 }
2679
2680 addr = alloca(addrlen+1);
2681
2682 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
2683 if (ret)
2684 return ret;
2685
2686 return get_errno(bind(sockfd, addr, addrlen));
2687 }
2688
2689 /* do_connect() Must return target values and target errnos. */
2690 static abi_long do_connect(int sockfd, abi_ulong target_addr,
2691 socklen_t addrlen)
2692 {
2693 void *addr;
2694 abi_long ret;
2695
2696 if ((int)addrlen < 0) {
2697 return -TARGET_EINVAL;
2698 }
2699
2700 addr = alloca(addrlen+1);
2701
2702 ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
2703 if (ret)
2704 return ret;
2705
2706 return get_errno(safe_connect(sockfd, addr, addrlen));
2707 }
2708
2709 /* do_sendrecvmsg_locked() Must return target values and target errnos. */
2710 static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
2711 int flags, int send)
2712 {
2713 abi_long ret, len;
2714 struct msghdr msg;
2715 abi_ulong count;
2716 struct iovec *vec;
2717 abi_ulong target_vec;
2718
2719 if (msgp->msg_name) {
2720 msg.msg_namelen = tswap32(msgp->msg_namelen);
2721 msg.msg_name = alloca(msg.msg_namelen+1);
2722 ret = target_to_host_sockaddr(fd, msg.msg_name,
2723 tswapal(msgp->msg_name),
2724 msg.msg_namelen);
2725 if (ret == -TARGET_EFAULT) {
2726 /* For connected sockets msg_name and msg_namelen must
2727 * be ignored, so returning EFAULT immediately is wrong.
2728 * Instead, pass a bad msg_name to the host kernel, and
2729 * let it decide whether to return EFAULT or not.
2730 */
2731 msg.msg_name = (void *)-1;
2732 } else if (ret) {
2733 goto out2;
2734 }
2735 } else {
2736 msg.msg_name = NULL;
2737 msg.msg_namelen = 0;
2738 }
2739 msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
2740 msg.msg_control = alloca(msg.msg_controllen);
2741 memset(msg.msg_control, 0, msg.msg_controllen);
2742
2743 msg.msg_flags = tswap32(msgp->msg_flags);
2744
2745 count = tswapal(msgp->msg_iovlen);
2746 target_vec = tswapal(msgp->msg_iov);
2747
2748 if (count > IOV_MAX) {
2749 /* sendrcvmsg returns a different errno for this condition than
2750 * readv/writev, so we must catch it here before lock_iovec() does.
2751 */
2752 ret = -TARGET_EMSGSIZE;
2753 goto out2;
2754 }
2755
2756 vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
2757 target_vec, count, send);
2758 if (vec == NULL) {
2759 ret = -host_to_target_errno(errno);
2760 goto out2;
2761 }
2762 msg.msg_iovlen = count;
2763 msg.msg_iov = vec;
2764
2765 if (send) {
2766 if (fd_trans_target_to_host_data(fd)) {
2767 void *host_msg;
2768
2769 host_msg = g_malloc(msg.msg_iov->iov_len);
2770 memcpy(host_msg, msg.msg_iov->iov_base, msg.msg_iov->iov_len);
2771 ret = fd_trans_target_to_host_data(fd)(host_msg,
2772 msg.msg_iov->iov_len);
2773 if (ret >= 0) {
2774 msg.msg_iov->iov_base = host_msg;
2775 ret = get_errno(safe_sendmsg(fd, &msg, flags));
2776 }
2777 g_free(host_msg);
2778 } else {
2779 ret = target_to_host_cmsg(&msg, msgp);
2780 if (ret == 0) {
2781 ret = get_errno(safe_sendmsg(fd, &msg, flags));
2782 }
2783 }
2784 } else {
2785 ret = get_errno(safe_recvmsg(fd, &msg, flags));
2786 if (!is_error(ret)) {
2787 len = ret;
2788 if (fd_trans_host_to_target_data(fd)) {
2789 ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base,
2790 MIN(msg.msg_iov->iov_len, len));
2791 } else {
2792 ret = host_to_target_cmsg(msgp, &msg);
2793 }
2794 if (!is_error(ret)) {
2795 msgp->msg_namelen = tswap32(msg.msg_namelen);
2796 msgp->msg_flags = tswap32(msg.msg_flags);
2797 if (msg.msg_name != NULL && msg.msg_name != (void *)-1) {
2798 ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
2799 msg.msg_name, msg.msg_namelen);
2800 if (ret) {
2801 goto out;
2802 }
2803 }
2804
2805 ret = len;
2806 }
2807 }
2808 }
2809
2810 out:
2811 unlock_iovec(vec, target_vec, count, !send);
2812 out2:
2813 return ret;
2814 }
2815
2816 static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
2817 int flags, int send)
2818 {
2819 abi_long ret;
2820 struct target_msghdr *msgp;
2821
2822 if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
2823 msgp,
2824 target_msg,
2825 send ? 1 : 0)) {
2826 return -TARGET_EFAULT;
2827 }
2828 ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
2829 unlock_user_struct(msgp, target_msg, send ? 0 : 1);
2830 return ret;
2831 }
2832
2833 /* We don't rely on the C library to have sendmmsg/recvmmsg support,
2834 * so it might not have this *mmsg-specific flag either.
2835 */
2836 #ifndef MSG_WAITFORONE
2837 #define MSG_WAITFORONE 0x10000
2838 #endif
2839
2840 static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
2841 unsigned int vlen, unsigned int flags,
2842 int send)
2843 {
2844 struct target_mmsghdr *mmsgp;
2845 abi_long ret = 0;
2846 int i;
2847
2848 if (vlen > UIO_MAXIOV) {
2849 vlen = UIO_MAXIOV;
2850 }
2851
2852 mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
2853 if (!mmsgp) {
2854 return -TARGET_EFAULT;
2855 }
2856
2857 for (i = 0; i < vlen; i++) {
2858 ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
2859 if (is_error(ret)) {
2860 break;
2861 }
2862 mmsgp[i].msg_len = tswap32(ret);
2863 /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
2864 if (flags & MSG_WAITFORONE) {
2865 flags |= MSG_DONTWAIT;
2866 }
2867 }
2868
2869 unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
2870
2871 /* Return number of datagrams sent if we sent any at all;
2872 * otherwise return the error.
2873 */
2874 if (i) {
2875 return i;
2876 }
2877 return ret;
2878 }
2879
2880 /* do_accept4() Must return target values and target errnos. */
2881 static abi_long do_accept4(int fd, abi_ulong target_addr,
2882 abi_ulong target_addrlen_addr, int flags)
2883 {
2884 socklen_t addrlen, ret_addrlen;
2885 void *addr;
2886 abi_long ret;
2887 int host_flags;
2888
2889 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
2890
2891 if (target_addr == 0) {
2892 return get_errno(safe_accept4(fd, NULL, NULL, host_flags));
2893 }
2894
2895 /* linux returns EINVAL if addrlen pointer is invalid */
2896 if (get_user_u32(addrlen, target_addrlen_addr))
2897 return -TARGET_EINVAL;
2898
2899 if ((int)addrlen < 0) {
2900 return -TARGET_EINVAL;
2901 }
2902
2903 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
2904 return -TARGET_EINVAL;
2905
2906 addr = alloca(addrlen);
2907
2908 ret_addrlen = addrlen;
2909 ret = get_errno(safe_accept4(fd, addr, &ret_addrlen, host_flags));
2910 if (!is_error(ret)) {
2911 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
2912 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
2913 ret = -TARGET_EFAULT;
2914 }
2915 }
2916 return ret;
2917 }
2918
2919 /* do_getpeername() Must return target values and target errnos. */
2920 static abi_long do_getpeername(int fd, abi_ulong target_addr,
2921 abi_ulong target_addrlen_addr)
2922 {
2923 socklen_t addrlen, ret_addrlen;
2924 void *addr;
2925 abi_long ret;
2926
2927 if (get_user_u32(addrlen, target_addrlen_addr))
2928 return -TARGET_EFAULT;
2929
2930 if ((int)addrlen < 0) {
2931 return -TARGET_EINVAL;
2932 }
2933
2934 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
2935 return -TARGET_EFAULT;
2936
2937 addr = alloca(addrlen);
2938
2939 ret_addrlen = addrlen;
2940 ret = get_errno(getpeername(fd, addr, &ret_addrlen));
2941 if (!is_error(ret)) {
2942 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
2943 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
2944 ret = -TARGET_EFAULT;
2945 }
2946 }
2947 return ret;
2948 }
2949
2950 /* do_getsockname() Must return target values and target errnos. */
2951 static abi_long do_getsockname(int fd, abi_ulong target_addr,
2952 abi_ulong target_addrlen_addr)
2953 {
2954 socklen_t addrlen, ret_addrlen;
2955 void *addr;
2956 abi_long ret;
2957
2958 if (get_user_u32(addrlen, target_addrlen_addr))
2959 return -TARGET_EFAULT;
2960
2961 if ((int)addrlen < 0) {
2962 return -TARGET_EINVAL;
2963 }
2964
2965 if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
2966 return -TARGET_EFAULT;
2967
2968 addr = alloca(addrlen);
2969
2970 ret_addrlen = addrlen;
2971 ret = get_errno(getsockname(fd, addr, &ret_addrlen));
2972 if (!is_error(ret)) {
2973 host_to_target_sockaddr(target_addr, addr, MIN(addrlen, ret_addrlen));
2974 if (put_user_u32(ret_addrlen, target_addrlen_addr)) {
2975 ret = -TARGET_EFAULT;
2976 }
2977 }
2978 return ret;
2979 }
2980
2981 /* do_socketpair() Must return target values and target errnos. */
2982 static abi_long do_socketpair(int domain, int type, int protocol,
2983 abi_ulong target_tab_addr)
2984 {
2985 int tab[2];
2986 abi_long ret;
2987
2988 target_to_host_sock_type(&type);
2989
2990 ret = get_errno(socketpair(domain, type, protocol, tab));
2991 if (!is_error(ret)) {
2992 if (put_user_s32(tab[0], target_tab_addr)
2993 || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
2994 ret = -TARGET_EFAULT;
2995 }
2996 return ret;
2997 }
2998
2999 /* do_sendto() Must return target values and target errnos. */
3000 static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
3001 abi_ulong target_addr, socklen_t addrlen)
3002 {
3003 void *addr;
3004 void *host_msg;
3005 void *copy_msg = NULL;
3006 abi_long ret;
3007
3008 if ((int)addrlen < 0) {
3009 return -TARGET_EINVAL;
3010 }
3011
3012 host_msg = lock_user(VERIFY_READ, msg, len, 1);
3013 if (!host_msg)
3014 return -TARGET_EFAULT;
3015 if (fd_trans_target_to_host_data(fd)) {
3016 copy_msg = host_msg;
3017 host_msg = g_malloc(len);
3018 memcpy(host_msg, copy_msg, len);
3019 ret = fd_trans_target_to_host_data(fd)(host_msg, len);
3020 if (ret < 0) {
3021 goto fail;
3022 }
3023 }
3024 if (target_addr) {
3025 addr = alloca(addrlen+1);
3026 ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
3027 if (ret) {
3028 goto fail;
3029 }
3030 ret = get_errno(safe_sendto(fd, host_msg, len, flags, addr, addrlen));
3031 } else {
3032 ret = get_errno(safe_sendto(fd, host_msg, len, flags, NULL, 0));
3033 }
3034 fail:
3035 if (copy_msg) {
3036 g_free(host_msg);
3037 host_msg = copy_msg;
3038 }
3039 unlock_user(host_msg, msg, 0);
3040 return ret;
3041 }
3042
3043 /* do_recvfrom() Must return target values and target errnos. */
3044 static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
3045 abi_ulong target_addr,
3046 abi_ulong target_addrlen)
3047 {
3048 socklen_t addrlen, ret_addrlen;
3049 void *addr;
3050 void *host_msg;
3051 abi_long ret;
3052
3053 host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
3054 if (!host_msg)
3055 return -TARGET_EFAULT;
3056 if (target_addr) {
3057 if (get_user_u32(addrlen, target_addrlen)) {
3058 ret = -TARGET_EFAULT;
3059 goto fail;
3060 }
3061 if ((int)addrlen < 0) {
3062 ret = -TARGET_EINVAL;
3063 goto fail;
3064 }
3065 addr = alloca(addrlen);
3066 ret_addrlen = addrlen;
3067 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags,
3068 addr, &ret_addrlen));
3069 } else {
3070 addr = NULL; /* To keep compiler quiet. */
3071 addrlen = 0; /* To keep compiler quiet. */
3072 ret = get_errno(safe_recvfrom(fd, host_msg, len, flags, NULL, 0));
3073 }
3074 if (!is_error(ret)) {
3075 if (fd_trans_host_to_target_data(fd)) {
3076 abi_long trans;
3077 trans = fd_trans_host_to_target_data(fd)(host_msg, MIN(ret, len));
3078 if (is_error(trans)) {
3079 ret = trans;
3080 goto fail;
3081 }
3082 }
3083 if (target_addr) {
3084 host_to_target_sockaddr(target_addr, addr,
3085 MIN(addrlen, ret_addrlen));
3086 if (put_user_u32(ret_addrlen, target_addrlen)) {
3087 ret = -TARGET_EFAULT;
3088 goto fail;
3089 }
3090 }
3091 unlock_user(host_msg, msg, len);
3092 } else {
3093 fail:
3094 unlock_user(host_msg, msg, 0);
3095 }
3096 return ret;
3097 }
3098
3099 #ifdef TARGET_NR_socketcall
3100 /* do_socketcall() must return target values and target errnos. */
3101 static abi_long do_socketcall(int num, abi_ulong vptr)
3102 {
3103 static const unsigned nargs[] = { /* number of arguments per operation */
3104 [TARGET_SYS_SOCKET] = 3, /* domain, type, protocol */
3105 [TARGET_SYS_BIND] = 3, /* fd, addr, addrlen */
3106 [TARGET_SYS_CONNECT] = 3, /* fd, addr, addrlen */
3107 [TARGET_SYS_LISTEN] = 2, /* fd, backlog */
3108 [TARGET_SYS_ACCEPT] = 3, /* fd, addr, addrlen */
3109 [TARGET_SYS_GETSOCKNAME] = 3, /* fd, addr, addrlen */
3110 [TARGET_SYS_GETPEERNAME] = 3, /* fd, addr, addrlen */
3111 [TARGET_SYS_SOCKETPAIR] = 4, /* domain, type, protocol, tab */
3112 [TARGET_SYS_SEND] = 4, /* fd, msg, len, flags */
3113 [TARGET_SYS_RECV] = 4, /* fd, msg, len, flags */
3114 [TARGET_SYS_SENDTO] = 6, /* fd, msg, len, flags, addr, addrlen */
3115 [TARGET_SYS_RECVFROM] = 6, /* fd, msg, len, flags, addr, addrlen */
3116 [TARGET_SYS_SHUTDOWN] = 2, /* fd, how */
3117 [TARGET_SYS_SETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3118 [TARGET_SYS_GETSOCKOPT] = 5, /* fd, level, optname, optval, optlen */
3119 [TARGET_SYS_SENDMSG] = 3, /* fd, msg, flags */
3120 [TARGET_SYS_RECVMSG] = 3, /* fd, msg, flags */
3121 [TARGET_SYS_ACCEPT4] = 4, /* fd, addr, addrlen, flags */
3122 [TARGET_SYS_RECVMMSG] = 4, /* fd, msgvec, vlen, flags */
3123 [TARGET_SYS_SENDMMSG] = 4, /* fd, msgvec, vlen, flags */
3124 };
3125 abi_long a[6]; /* max 6 args */
3126 unsigned i;
3127
3128 /* check the range of the first argument num */
3129 /* (TARGET_SYS_SENDMMSG is the highest among TARGET_SYS_xxx) */
3130 if (num < 1 || num > TARGET_SYS_SENDMMSG) {
3131 return -TARGET_EINVAL;
3132 }
3133 /* ensure we have space for args */
3134 if (nargs[num] > ARRAY_SIZE(a)) {
3135 return -TARGET_EINVAL;
3136 }
3137 /* collect the arguments in a[] according to nargs[] */
3138 for (i = 0; i < nargs[num]; ++i) {
3139 if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
3140 return -TARGET_EFAULT;
3141 }
3142 }
3143 /* now when we have the args, invoke the appropriate underlying function */
3144 switch (num) {
3145 case TARGET_SYS_SOCKET: /* domain, type, protocol */
3146 return do_socket(a[0], a[1], a[2]);
3147 case TARGET_SYS_BIND: /* sockfd, addr, addrlen */
3148 return do_bind(a[0], a[1], a[2]);
3149 case TARGET_SYS_CONNECT: /* sockfd, addr, addrlen */
3150 return do_connect(a[0], a[1], a[2]);
3151 case TARGET_SYS_LISTEN: /* sockfd, backlog */
3152 return get_errno(listen(a[0], a[1]));
3153 case TARGET_SYS_ACCEPT: /* sockfd, addr, addrlen */
3154 return do_accept4(a[0], a[1], a[2], 0);
3155 case TARGET_SYS_GETSOCKNAME: /* sockfd, addr, addrlen */
3156 return do_getsockname(a[0], a[1], a[2]);
3157 case TARGET_SYS_GETPEERNAME: /* sockfd, addr, addrlen */
3158 return do_getpeername(a[0], a[1], a[2]);
3159 case TARGET_SYS_SOCKETPAIR: /* domain, type, protocol, tab */
3160 return do_socketpair(a[0], a[1], a[2], a[3]);
3161 case TARGET_SYS_SEND: /* sockfd, msg, len, flags */
3162 return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
3163 case TARGET_SYS_RECV: /* sockfd, msg, len, flags */
3164 return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
3165 case TARGET_SYS_SENDTO: /* sockfd, msg, len, flags, addr, addrlen */
3166 return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
3167 case TARGET_SYS_RECVFROM: /* sockfd, msg, len, flags, addr, addrlen */
3168 return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
3169 case TARGET_SYS_SHUTDOWN: /* sockfd, how */
3170 return get_errno(shutdown(a[0], a[1]));
3171 case TARGET_SYS_SETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3172 return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
3173 case TARGET_SYS_GETSOCKOPT: /* sockfd, level, optname, optval, optlen */
3174 return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
3175 case TARGET_SYS_SENDMSG: /* sockfd, msg, flags */
3176 return do_sendrecvmsg(a[0], a[1], a[2], 1);
3177 case TARGET_SYS_RECVMSG: /* sockfd, msg, flags */
3178 return do_sendrecvmsg(a[0], a[1], a[2], 0);
3179 case TARGET_SYS_ACCEPT4: /* sockfd, addr, addrlen, flags */
3180 return do_accept4(a[0], a[1], a[2], a[3]);
3181 case TARGET_SYS_RECVMMSG: /* sockfd, msgvec, vlen, flags */
3182 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
3183 case TARGET_SYS_SENDMMSG: /* sockfd, msgvec, vlen, flags */
3184 return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
3185 default:
3186 gemu_log("Unsupported socketcall: %d\n", num);
3187 return -TARGET_EINVAL;
3188 }
3189 }
3190 #endif
3191
3192 #define N_SHM_REGIONS 32
3193
3194 static struct shm_region {
3195 abi_ulong start;
3196 abi_ulong size;
3197 bool in_use;
3198 } shm_regions[N_SHM_REGIONS];
3199
3200 #ifndef TARGET_SEMID64_DS
3201 /* asm-generic version of this struct */
3202 struct target_semid64_ds
3203 {
3204 struct target_ipc_perm sem_perm;
3205 abi_ulong sem_otime;
3206 #if TARGET_ABI_BITS == 32
3207 abi_ulong __unused1;
3208 #endif
3209 abi_ulong sem_ctime;
3210 #if TARGET_ABI_BITS == 32
3211 abi_ulong __unused2;
3212 #endif
3213 abi_ulong sem_nsems;
3214 abi_ulong __unused3;
3215 abi_ulong __unused4;
3216 };
3217 #endif
3218
3219 static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
3220 abi_ulong target_addr)
3221 {
3222 struct target_ipc_perm *target_ip;
3223 struct target_semid64_ds *target_sd;
3224
3225 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3226 return -TARGET_EFAULT;
3227 target_ip = &(target_sd->sem_perm);
3228 host_ip->__key = tswap32(target_ip->__key);
3229 host_ip->uid = tswap32(target_ip->uid);
3230 host_ip->gid = tswap32(target_ip->gid);
3231 host_ip->cuid = tswap32(target_ip->cuid);
3232 host_ip->cgid = tswap32(target_ip->cgid);
3233 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3234 host_ip->mode = tswap32(target_ip->mode);
3235 #else
3236 host_ip->mode = tswap16(target_ip->mode);
3237 #endif
3238 #if defined(TARGET_PPC)
3239 host_ip->__seq = tswap32(target_ip->__seq);
3240 #else
3241 host_ip->__seq = tswap16(target_ip->__seq);
3242 #endif
3243 unlock_user_struct(target_sd, target_addr, 0);
3244 return 0;
3245 }
3246
3247 static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
3248 struct ipc_perm *host_ip)
3249 {
3250 struct target_ipc_perm *target_ip;
3251 struct target_semid64_ds *target_sd;
3252
3253 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3254 return -TARGET_EFAULT;
3255 target_ip = &(target_sd->sem_perm);
3256 target_ip->__key = tswap32(host_ip->__key);
3257 target_ip->uid = tswap32(host_ip->uid);
3258 target_ip->gid = tswap32(host_ip->gid);
3259 target_ip->cuid = tswap32(host_ip->cuid);
3260 target_ip->cgid = tswap32(host_ip->cgid);
3261 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
3262 target_ip->mode = tswap32(host_ip->mode);
3263 #else
3264 target_ip->mode = tswap16(host_ip->mode);
3265 #endif
3266 #if defined(TARGET_PPC)
3267 target_ip->__seq = tswap32(host_ip->__seq);
3268 #else
3269 target_ip->__seq = tswap16(host_ip->__seq);
3270 #endif
3271 unlock_user_struct(target_sd, target_addr, 1);
3272 return 0;
3273 }
3274
3275 static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
3276 abi_ulong target_addr)
3277 {
3278 struct target_semid64_ds *target_sd;
3279
3280 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3281 return -TARGET_EFAULT;
3282 if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
3283 return -TARGET_EFAULT;
3284 host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
3285 host_sd->sem_otime = tswapal(target_sd->sem_otime);
3286 host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
3287 unlock_user_struct(target_sd, target_addr, 0);
3288 return 0;
3289 }
3290
3291 static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
3292 struct semid_ds *host_sd)
3293 {
3294 struct target_semid64_ds *target_sd;
3295
3296 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3297 return -TARGET_EFAULT;
3298 if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
3299 return -TARGET_EFAULT;
3300 target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
3301 target_sd->sem_otime = tswapal(host_sd->sem_otime);
3302 target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
3303 unlock_user_struct(target_sd, target_addr, 1);
3304 return 0;
3305 }
3306
3307 struct target_seminfo {
3308 int semmap;
3309 int semmni;
3310 int semmns;
3311 int semmnu;
3312 int semmsl;
3313 int semopm;
3314 int semume;
3315 int semusz;
3316 int semvmx;
3317 int semaem;
3318 };
3319
3320 static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
3321 struct seminfo *host_seminfo)
3322 {
3323 struct target_seminfo *target_seminfo;
3324 if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
3325 return -TARGET_EFAULT;
3326 __put_user(host_seminfo->semmap, &target_seminfo->semmap);
3327 __put_user(host_seminfo->semmni, &target_seminfo->semmni);
3328 __put_user(host_seminfo->semmns, &target_seminfo->semmns);
3329 __put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
3330 __put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
3331 __put_user(host_seminfo->semopm, &target_seminfo->semopm);
3332 __put_user(host_seminfo->semume, &target_seminfo->semume);
3333 __put_user(host_seminfo->semusz, &target_seminfo->semusz);
3334 __put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
3335 __put_user(host_seminfo->semaem, &target_seminfo->semaem);
3336 unlock_user_struct(target_seminfo, target_addr, 1);
3337 return 0;
3338 }
3339
3340 union semun {
3341 int val;
3342 struct semid_ds *buf;
3343 unsigned short *array;
3344 struct seminfo *__buf;
3345 };
3346
3347 union target_semun {
3348 int val;
3349 abi_ulong buf;
3350 abi_ulong array;
3351 abi_ulong __buf;
3352 };
3353
3354 static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
3355 abi_ulong target_addr)
3356 {
3357 int nsems;
3358 unsigned short *array;
3359 union semun semun;
3360 struct semid_ds semid_ds;
3361 int i, ret;
3362
3363 semun.buf = &semid_ds;
3364
3365 ret = semctl(semid, 0, IPC_STAT, semun);
3366 if (ret == -1)
3367 return get_errno(ret);
3368
3369 nsems = semid_ds.sem_nsems;
3370
3371 *host_array = g_try_new(unsigned short, nsems);
3372 if (!*host_array) {
3373 return -TARGET_ENOMEM;
3374 }
3375 array = lock_user(VERIFY_READ, target_addr,
3376 nsems*sizeof(unsigned short), 1);
3377 if (!array) {
3378 g_free(*host_array);
3379 return -TARGET_EFAULT;
3380 }
3381
3382 for(i=0; i<nsems; i++) {
3383 __get_user((*host_array)[i], &array[i]);
3384 }
3385 unlock_user(array, target_addr, 0);
3386
3387 return 0;
3388 }
3389
3390 static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
3391 unsigned short **host_array)
3392 {
3393 int nsems;
3394 unsigned short *array;
3395 union semun semun;
3396 struct semid_ds semid_ds;
3397 int i, ret;
3398
3399 semun.buf = &semid_ds;
3400
3401 ret = semctl(semid, 0, IPC_STAT, semun);
3402 if (ret == -1)
3403 return get_errno(ret);
3404
3405 nsems = semid_ds.sem_nsems;
3406
3407 array = lock_user(VERIFY_WRITE, target_addr,
3408 nsems*sizeof(unsigned short), 0);
3409 if (!array)
3410 return -TARGET_EFAULT;
3411
3412 for(i=0; i<nsems; i++) {
3413 __put_user((*host_array)[i], &array[i]);
3414 }
3415 g_free(*host_array);
3416 unlock_user(array, target_addr, 1);
3417
3418 return 0;
3419 }
3420
3421 static inline abi_long do_semctl(int semid, int semnum, int cmd,
3422 abi_ulong target_arg)
3423 {
3424 union target_semun target_su = { .buf = target_arg };
3425 union semun arg;
3426 struct semid_ds dsarg;
3427 unsigned short *array = NULL;
3428 struct seminfo seminfo;
3429 abi_long ret = -TARGET_EINVAL;
3430 abi_long err;
3431 cmd &= 0xff;
3432
3433 switch( cmd ) {
3434 case GETVAL:
3435 case SETVAL:
3436 /* In 64 bit cross-endian situations, we will erroneously pick up
3437 * the wrong half of the union for the "val" element. To rectify
3438 * this, the entire 8-byte structure is byteswapped, followed by
3439 * a swap of the 4 byte val field. In other cases, the data is
3440 * already in proper host byte order. */
3441 if (sizeof(target_su.val) != (sizeof(target_su.buf))) {
3442 target_su.buf = tswapal(target_su.buf);
3443 arg.val = tswap32(target_su.val);
3444 } else {
3445 arg.val = target_su.val;
3446 }
3447 ret = get_errno(semctl(semid, semnum, cmd, arg));
3448 break;
3449 case GETALL:
3450 case SETALL:
3451 err = target_to_host_semarray(semid, &array, target_su.array);
3452 if (err)
3453 return err;
3454 arg.array = array;
3455 ret = get_errno(semctl(semid, semnum, cmd, arg));
3456 err = host_to_target_semarray(semid, target_su.array, &array);
3457 if (err)
3458 return err;
3459 break;
3460 case IPC_STAT:
3461 case IPC_SET:
3462 case SEM_STAT:
3463 err = target_to_host_semid_ds(&dsarg, target_su.buf);
3464 if (err)
3465 return err;
3466 arg.buf = &dsarg;
3467 ret = get_errno(semctl(semid, semnum, cmd, arg));
3468 err = host_to_target_semid_ds(target_su.buf, &dsarg);
3469 if (err)
3470 return err;
3471 break;
3472 case IPC_INFO:
3473 case SEM_INFO:
3474 arg.__buf = &seminfo;
3475 ret = get_errno(semctl(semid, semnum, cmd, arg));
3476 err = host_to_target_seminfo(target_su.__buf, &seminfo);
3477 if (err)
3478 return err;
3479 break;
3480 case IPC_RMID:
3481 case GETPID:
3482 case GETNCNT:
3483 case GETZCNT:
3484 ret = get_errno(semctl(semid, semnum, cmd, NULL));
3485 break;
3486 }
3487
3488 return ret;
3489 }
3490
3491 struct target_sembuf {
3492 unsigned short sem_num;
3493 short sem_op;
3494 short sem_flg;
3495 };
3496
3497 static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
3498 abi_ulong target_addr,
3499 unsigned nsops)
3500 {
3501 struct target_sembuf *target_sembuf;
3502 int i;
3503
3504 target_sembuf = lock_user(VERIFY_READ, target_addr,
3505 nsops*sizeof(struct target_sembuf), 1);
3506 if (!target_sembuf)
3507 return -TARGET_EFAULT;
3508
3509 for(i=0; i<nsops; i++) {
3510 __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
3511 __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
3512 __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
3513 }
3514
3515 unlock_user(target_sembuf, target_addr, 0);
3516
3517 return 0;
3518 }
3519
3520 static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
3521 {
3522 struct sembuf sops[nsops];
3523
3524 if (target_to_host_sembuf(sops, ptr, nsops))
3525 return -TARGET_EFAULT;
3526
3527 return get_errno(safe_semtimedop(semid, sops, nsops, NULL));
3528 }
3529
3530 struct target_msqid_ds
3531 {
3532 struct target_ipc_perm msg_perm;
3533 abi_ulong msg_stime;
3534 #if TARGET_ABI_BITS == 32
3535 abi_ulong __unused1;
3536 #endif
3537 abi_ulong msg_rtime;
3538 #if TARGET_ABI_BITS == 32
3539 abi_ulong __unused2;
3540 #endif
3541 abi_ulong msg_ctime;
3542 #if TARGET_ABI_BITS == 32
3543 abi_ulong __unused3;
3544 #endif
3545 abi_ulong __msg_cbytes;
3546 abi_ulong msg_qnum;
3547 abi_ulong msg_qbytes;
3548 abi_ulong msg_lspid;
3549 abi_ulong msg_lrpid;
3550 abi_ulong __unused4;
3551 abi_ulong __unused5;
3552 };
3553
3554 static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
3555 abi_ulong target_addr)
3556 {
3557 struct target_msqid_ds *target_md;
3558
3559 if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
3560 return -TARGET_EFAULT;
3561 if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
3562 return -TARGET_EFAULT;
3563 host_md->msg_stime = tswapal(target_md->msg_stime);
3564 host_md->msg_rtime = tswapal(target_md->msg_rtime);
3565 host_md->msg_ctime = tswapal(target_md->msg_ctime);
3566 host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes);
3567 host_md->msg_qnum = tswapal(target_md->msg_qnum);
3568 host_md->msg_qbytes = tswapal(target_md->msg_qbytes);
3569 host_md->msg_lspid = tswapal(target_md->msg_lspid);
3570 host_md->msg_lrpid = tswapal(target_md->msg_lrpid);
3571 unlock_user_struct(target_md, target_addr, 0);
3572 return 0;
3573 }
3574
3575 static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr,
3576 struct msqid_ds *host_md)
3577 {
3578 struct target_msqid_ds *target_md;
3579
3580 if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0))
3581 return -TARGET_EFAULT;
3582 if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm)))
3583 return -TARGET_EFAULT;
3584 target_md->msg_stime = tswapal(host_md->msg_stime);
3585 target_md->msg_rtime = tswapal(host_md->msg_rtime);
3586 target_md->msg_ctime = tswapal(host_md->msg_ctime);
3587 target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes);
3588 target_md->msg_qnum = tswapal(host_md->msg_qnum);
3589 target_md->msg_qbytes = tswapal(host_md->msg_qbytes);
3590 target_md->msg_lspid = tswapal(host_md->msg_lspid);
3591 target_md->msg_lrpid = tswapal(host_md->msg_lrpid);
3592 unlock_user_struct(target_md, target_addr, 1);
3593 return 0;
3594 }
3595
3596 struct target_msginfo {
3597 int msgpool;
3598 int msgmap;
3599 int msgmax;
3600 int msgmnb;
3601 int msgmni;
3602 int msgssz;
3603 int msgtql;
3604 unsigned short int msgseg;
3605 };
3606
3607 static inline abi_long host_to_target_msginfo(abi_ulong target_addr,
3608 struct msginfo *host_msginfo)
3609 {
3610 struct target_msginfo *target_msginfo;
3611 if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0))
3612 return -TARGET_EFAULT;
3613 __put_user(host_msginfo->msgpool, &target_msginfo->msgpool);
3614 __put_user(host_msginfo->msgmap, &target_msginfo->msgmap);
3615 __put_user(host_msginfo->msgmax, &target_msginfo->msgmax);
3616 __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb);
3617 __put_user(host_msginfo->msgmni, &target_msginfo->msgmni);
3618 __put_user(host_msginfo->msgssz, &target_msginfo->msgssz);
3619 __put_user(host_msginfo->msgtql, &target_msginfo->msgtql);
3620 __put_user(host_msginfo->msgseg, &target_msginfo->msgseg);
3621 unlock_user_struct(target_msginfo, target_addr, 1);
3622 return 0;
3623 }
3624
3625 static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr)
3626 {
3627 struct msqid_ds dsarg;
3628 struct msginfo msginfo;
3629 abi_long ret = -TARGET_EINVAL;
3630
3631 cmd &= 0xff;
3632
3633 switch (cmd) {
3634 case IPC_STAT:
3635 case IPC_SET:
3636 case MSG_STAT:
3637 if (target_to_host_msqid_ds(&dsarg,ptr))
3638 return -TARGET_EFAULT;
3639 ret = get_errno(msgctl(msgid, cmd, &dsarg));
3640 if (host_to_target_msqid_ds(ptr,&dsarg))
3641 return -TARGET_EFAULT;
3642 break;
3643 case IPC_RMID:
3644 ret = get_errno(msgctl(msgid, cmd, NULL));
3645 break;
3646 case IPC_INFO:
3647 case MSG_INFO:
3648 ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo));
3649 if (host_to_target_msginfo(ptr, &msginfo))
3650 return -TARGET_EFAULT;
3651 break;
3652 }
3653
3654 return ret;
3655 }
3656
3657 struct target_msgbuf {
3658 abi_long mtype;
3659 char mtext[1];
3660 };
3661
3662 static inline abi_long do_msgsnd(int msqid, abi_long msgp,
3663 ssize_t msgsz, int msgflg)
3664 {
3665 struct target_msgbuf *target_mb;
3666 struct msgbuf *host_mb;
3667 abi_long ret = 0;
3668
3669 if (msgsz < 0) {
3670 return -TARGET_EINVAL;
3671 }
3672
3673 if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
3674 return -TARGET_EFAULT;
3675 host_mb = g_try_malloc(msgsz + sizeof(long));
3676 if (!host_mb) {
3677 unlock_user_struct(target_mb, msgp, 0);
3678 return -TARGET_ENOMEM;
3679 }
3680 host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
3681 memcpy(host_mb->mtext, target_mb->mtext, msgsz);
3682 ret = get_errno(safe_msgsnd(msqid, host_mb, msgsz, msgflg));
3683 g_free(host_mb);
3684 unlock_user_struct(target_mb, msgp, 0);
3685
3686 return ret;
3687 }
3688
3689 static inline abi_long do_msgrcv(int msqid, abi_long msgp,
3690 ssize_t msgsz, abi_long msgtyp,
3691 int msgflg)
3692 {
3693 struct target_msgbuf *target_mb;
3694 char *target_mtext;
3695 struct msgbuf *host_mb;
3696 abi_long ret = 0;
3697
3698 if (msgsz < 0) {
3699 return -TARGET_EINVAL;
3700 }
3701
3702 if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0))
3703 return -TARGET_EFAULT;
3704
3705 host_mb = g_try_malloc(msgsz + sizeof(long));
3706 if (!host_mb) {
3707 ret = -TARGET_ENOMEM;
3708 goto end;
3709 }
3710 ret = get_errno(safe_msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg));
3711
3712 if (ret > 0) {
3713 abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong);
3714 target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0);
3715 if (!target_mtext) {
3716 ret = -TARGET_EFAULT;
3717 goto end;
3718 }
3719 memcpy(target_mb->mtext, host_mb->mtext, ret);
3720 unlock_user(target_mtext, target_mtext_addr, ret);
3721 }
3722
3723 target_mb->mtype = tswapal(host_mb->mtype);
3724
3725 end:
3726 if (target_mb)
3727 unlock_user_struct(target_mb, msgp, 1);
3728 g_free(host_mb);
3729 return ret;
3730 }
3731
3732 static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
3733 abi_ulong target_addr)
3734 {
3735 struct target_shmid_ds *target_sd;
3736
3737 if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
3738 return -TARGET_EFAULT;
3739 if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr))
3740 return -TARGET_EFAULT;
3741 __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
3742 __get_user(host_sd->shm_atime, &target_sd->shm_atime);
3743 __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
3744 __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
3745 __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
3746 __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
3747 __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
3748 unlock_user_struct(target_sd, target_addr, 0);
3749 return 0;
3750 }
3751
3752 static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr,
3753 struct shmid_ds *host_sd)
3754 {
3755 struct target_shmid_ds *target_sd;
3756
3757 if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
3758 return -TARGET_EFAULT;
3759 if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm)))
3760 return -TARGET_EFAULT;
3761 __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
3762 __put_user(host_sd->shm_atime, &target_sd->shm_atime);
3763 __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
3764 __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
3765 __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
3766 __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
3767 __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
3768 unlock_user_struct(target_sd, target_addr, 1);
3769 return 0;
3770 }
3771
3772 struct target_shminfo {
3773 abi_ulong shmmax;
3774 abi_ulong shmmin;
3775 abi_ulong shmmni;
3776 abi_ulong shmseg;
3777 abi_ulong shmall;
3778 };
3779
3780 static inline abi_long host_to_target_shminfo(abi_ulong target_addr,
3781 struct shminfo *host_shminfo)
3782 {
3783 struct target_shminfo *target_shminfo;
3784 if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0))
3785 return -TARGET_EFAULT;
3786 __put_user(host_shminfo->shmmax, &target_shminfo->shmmax);
3787 __put_user(host_shminfo->shmmin, &target_shminfo->shmmin);
3788 __put_user(host_shminfo->shmmni, &target_shminfo->shmmni);
3789 __put_user(host_shminfo->shmseg, &target_shminfo->shmseg);
3790 __put_user(host_shminfo->shmall, &target_shminfo->shmall);
3791 unlock_user_struct(target_shminfo, target_addr, 1);
3792 return 0;
3793 }
3794
3795 struct target_shm_info {
3796 int used_ids;
3797 abi_ulong shm_tot;
3798 abi_ulong shm_rss;
3799 abi_ulong shm_swp;
3800 abi_ulong swap_attempts;
3801 abi_ulong swap_successes;
3802 };
3803
3804 static inline abi_long host_to_target_shm_info(abi_ulong target_addr,
3805 struct shm_info *host_shm_info)
3806 {
3807 struct target_shm_info *target_shm_info;
3808 if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0))
3809 return -TARGET_EFAULT;
3810 __put_user(host_shm_info->used_ids, &target_shm_info->used_ids);
3811 __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot);
3812 __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss);
3813 __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp);
3814 __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts);
3815 __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes);
3816 unlock_user_struct(target_shm_info, target_addr, 1);
3817 return 0;
3818 }
3819
3820 static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf)
3821 {
3822 struct shmid_ds dsarg;
3823 struct shminfo shminfo;
3824 struct shm_info shm_info;
3825 abi_long ret = -TARGET_EINVAL;
3826
3827 cmd &= 0xff;
3828
3829 switch(cmd) {
3830 case IPC_STAT:
3831 case IPC_SET:
3832 case SHM_STAT:
3833 if (target_to_host_shmid_ds(&dsarg, buf))
3834 return -TARGET_EFAULT;
3835 ret = get_errno(shmctl(shmid, cmd, &dsarg));
3836 if (host_to_target_shmid_ds(buf, &dsarg))
3837 return -TARGET_EFAULT;
3838 break;
3839 case IPC_INFO:
3840 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo));
3841 if (host_to_target_shminfo(buf, &shminfo))
3842 return -TARGET_EFAULT;
3843 break;
3844 case SHM_INFO:
3845 ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info));
3846 if (host_to_target_shm_info(buf, &shm_info))
3847 return -TARGET_EFAULT;
3848 break;
3849 case IPC_RMID:
3850 case SHM_LOCK:
3851 case SHM_UNLOCK:
3852 ret = get_errno(shmctl(shmid, cmd, NULL));
3853 break;
3854 }
3855
3856 return ret;
3857 }
3858
3859 #ifndef TARGET_FORCE_SHMLBA
3860 /* For most architectures, SHMLBA is the same as the page size;
3861 * some architectures have larger values, in which case they should
3862 * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
3863 * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
3864 * and defining its own value for SHMLBA.
3865 *
3866 * The kernel also permits SHMLBA to be set by the architecture to a
3867 * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
3868 * this means that addresses are rounded to the large size if
3869 * SHM_RND is set but addresses not aligned to that size are not rejected
3870 * as long as they are at least page-aligned. Since the only architecture
3871 * which uses this is ia64 this code doesn't provide for that oddity.
3872 */
3873 static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
3874 {
3875 return TARGET_PAGE_SIZE;
3876 }
3877 #endif
3878
3879 static inline abi_ulong do_shmat(CPUArchState *cpu_env,
3880 int shmid, abi_ulong shmaddr, int shmflg)
3881 {
3882 abi_long raddr;
3883 void *host_raddr;
3884 struct shmid_ds shm_info;
3885 int i,ret;
3886 abi_ulong shmlba;
3887
3888 /* find out the length of the shared memory segment */
3889 ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
3890 if (is_error(ret)) {
3891 /* can't get length, bail out */
3892 return ret;
3893 }
3894
3895 shmlba = target_shmlba(cpu_env);
3896
3897 if (shmaddr & (shmlba - 1)) {
3898 if (shmflg & SHM_RND) {
3899 shmaddr &= ~(shmlba - 1);
3900 } else {
3901 return -TARGET_EINVAL;
3902 }
3903 }
3904 if (!guest_range_valid(shmaddr, shm_info.shm_segsz)) {
3905 return -TARGET_EINVAL;
3906 }
3907
3908 mmap_lock();
3909
3910 if (shmaddr)
3911 host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg);
3912 else {
3913 abi_ulong mmap_start;
3914
3915 mmap_start = mmap_find_vma(0, shm_info.shm_segsz);
3916
3917 if (mmap_start == -1) {
3918 errno = ENOMEM;
3919 host_raddr = (void *)-1;
3920 } else
3921 host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP);
3922 }
3923
3924 if (host_raddr == (void *)-1) {
3925 mmap_unlock();
3926 return get_errno((long)host_raddr);
3927 }
3928 raddr=h2g((unsigned long)host_raddr);
3929
3930 page_set_flags(raddr, raddr + shm_info.shm_segsz,
3931 PAGE_VALID | PAGE_READ |
3932 ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE));
3933
3934 for (i = 0; i < N_SHM_REGIONS; i++) {
3935 if (!shm_regions[i].in_use) {
3936 shm_regions[i].in_use = true;
3937 shm_regions[i].start = raddr;
3938 shm_regions[i].size = shm_info.shm_segsz;
3939 break;
3940 }
3941 }
3942
3943 mmap_unlock();
3944 return raddr;
3945
3946 }
3947
3948 static inline abi_long do_shmdt(abi_ulong shmaddr)
3949 {
3950 int i;
3951 abi_long rv;
3952
3953 mmap_lock();
3954
3955 for (i = 0; i < N_SHM_REGIONS; ++i) {
3956 if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
3957 shm_regions[i].in_use = false;
3958 page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0);
3959 break;
3960 }
3961 }
3962 rv = get_errno(shmdt(g2h(shmaddr)));
3963
3964 mmap_unlock();
3965
3966 return rv;
3967 }
3968
3969 #ifdef TARGET_NR_ipc
3970 /* ??? This only works with linear mappings. */
3971 /* do_ipc() must return target values and target errnos. */
3972 static abi_long do_ipc(CPUArchState *cpu_env,
3973 unsigned int call, abi_long first,
3974 abi_long second, abi_long third,
3975 abi_long ptr, abi_long fifth)
3976 {
3977 int version;
3978 abi_long ret = 0;
3979
3980 version = call >> 16;
3981 call &= 0xffff;
3982
3983 switch (call) {
3984 case IPCOP_semop:
3985 ret = do_semop(first, ptr, second);
3986 break;
3987
3988 case IPCOP_semget:
3989 ret = get_errno(semget(first, second, third));
3990 break;
3991
3992 case IPCOP_semctl: {
3993 /* The semun argument to semctl is passed by value, so dereference the
3994 * ptr argument. */
3995 abi_ulong atptr;
3996 get_user_ual(atptr, ptr);
3997 ret = do_semctl(first, second, third, atptr);
3998 break;
3999 }
4000
4001 case IPCOP_msgget:
4002 ret = get_errno(msgget(first, second));
4003 break;
4004
4005 case IPCOP_msgsnd:
4006 ret = do_msgsnd(first, ptr, second, third);
4007 break;
4008
4009 case IPCOP_msgctl:
4010 ret = do_msgctl(first, second, ptr);
4011 break;
4012
4013 case IPCOP_msgrcv:
4014 switch (version) {
4015 case 0:
4016 {
4017 struct target_ipc_kludge {
4018 abi_long msgp;
4019 abi_long msgtyp;
4020 } *tmp;
4021
4022 if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) {
4023 ret = -TARGET_EFAULT;
4024 break;
4025 }
4026
4027 ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third);
4028
4029 unlock_user_struct(tmp, ptr, 0);
4030 break;
4031 }
4032 default:
4033 ret = do_msgrcv(first, ptr, second, fifth, third);
4034 }
4035 break;
4036
4037 case IPCOP_shmat:
4038 switch (version) {
4039 default:
4040 {
4041 abi_ulong raddr;
4042 raddr = do_shmat(cpu_env, first, ptr, second);
4043 if (is_error(raddr))
4044 return get_errno(raddr);
4045 if (put_user_ual(raddr, third))
4046 return -TARGET_EFAULT;
4047 break;
4048 }
4049 case 1:
4050 ret = -TARGET_EINVAL;
4051 break;
4052 }
4053 break;
4054 case IPCOP_shmdt:
4055 ret = do_shmdt(ptr);
4056 break;
4057
4058 case IPCOP_shmget:
4059 /* IPC_* flag values are the same on all linux platforms */
4060 ret = get_errno(shmget(first, second, third));
4061 break;
4062
4063 /* IPC_* and SHM_* command values are the same on all linux platforms */
4064 case IPCOP_shmctl:
4065 ret = do_shmctl(first, second, ptr);
4066 break;
4067 default:
4068 gemu_log("Unsupported ipc call: %d (version %d)\n", call, version);
4069 ret = -TARGET_ENOSYS;
4070 break;
4071 }
4072 return ret;
4073 }
4074 #endif
4075
4076 /* kernel structure types definitions */
4077
4078 #define STRUCT(name, ...) STRUCT_ ## name,
4079 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
4080 enum {
4081 #include "syscall_types.h"
4082 STRUCT_MAX
4083 };
4084 #undef STRUCT
4085 #undef STRUCT_SPECIAL
4086
4087 #define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL };
4088 #define STRUCT_SPECIAL(name)
4089 #include "syscall_types.h"
4090 #undef STRUCT
4091 #undef STRUCT_SPECIAL
4092
4093 typedef struct IOCTLEntry IOCTLEntry;
4094
4095 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
4096 int fd, int cmd, abi_long arg);
4097
4098 struct IOCTLEntry {
4099 int target_cmd;
4100 unsigned int host_cmd;
4101 const char *name;
4102 int access;
4103 do_ioctl_fn *do_ioctl;
4104 const argtype arg_type[5];
4105 };
4106
4107 #define IOC_R 0x0001
4108 #define IOC_W 0x0002
4109 #define IOC_RW (IOC_R | IOC_W)
4110
4111 #define MAX_STRUCT_SIZE 4096
4112
4113 #ifdef CONFIG_FIEMAP
4114 /* So fiemap access checks don't overflow on 32 bit systems.
4115 * This is very slightly smaller than the limit imposed by
4116 * the underlying kernel.
4117 */
4118 #define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \
4119 / sizeof(struct fiemap_extent))
4120
4121 static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
4122 int fd, int cmd, abi_long arg)
4123 {
4124 /* The parameter for this ioctl is a struct fiemap followed
4125 * by an array of struct fiemap_extent whose size is set
4126 * in fiemap->fm_extent_count. The array is filled in by the
4127 * ioctl.
4128 */
4129 int target_size_in, target_size_out;
4130 struct fiemap *fm;
4131 const argtype *arg_type = ie->arg_type;
4132 const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) };
4133 void *argptr, *p;
4134 abi_long ret;
4135 int i, extent_size = thunk_type_size(extent_arg_type, 0);
4136 uint32_t outbufsz;
4137 int free_fm = 0;
4138
4139 assert(arg_type[0] == TYPE_PTR);
4140 assert(ie->access == IOC_RW);
4141 arg_type++;
4142 target_size_in = thunk_type_size(arg_type, 0);
4143 argptr = lock_user(VERIFY_READ, arg, target_size_in, 1);
4144 if (!argptr) {
4145 return -TARGET_EFAULT;
4146 }
4147 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4148 unlock_user(argptr, arg, 0);
4149 fm = (struct fiemap *)buf_temp;
4150 if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) {
4151 return -TARGET_EINVAL;
4152 }
4153
4154 outbufsz = sizeof (*fm) +
4155 (sizeof(struct fiemap_extent) * fm->fm_extent_count);
4156
4157 if (outbufsz > MAX_STRUCT_SIZE) {
4158 /* We can't fit all the extents into the fixed size buffer.
4159 * Allocate one that is large enough and use it instead.
4160 */
4161 fm = g_try_malloc(outbufsz);
4162 if (!fm) {
4163 return -TARGET_ENOMEM;
4164 }
4165 memcpy(fm, buf_temp, sizeof(struct fiemap));
4166 free_fm = 1;
4167 }
4168 ret = get_errno(safe_ioctl(fd, ie->host_cmd, fm));
4169 if (!is_error(ret)) {
4170 target_size_out = target_size_in;
4171 /* An extent_count of 0 means we were only counting the extents
4172 * so there are no structs to copy
4173 */
4174 if (fm->fm_extent_count != 0) {
4175 target_size_out += fm->fm_mapped_extents * extent_size;
4176 }
4177 argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0);
4178 if (!argptr) {
4179 ret = -TARGET_EFAULT;
4180 } else {
4181 /* Convert the struct fiemap */
4182 thunk_convert(argptr, fm, arg_type, THUNK_TARGET);
4183 if (fm->fm_extent_count != 0) {
4184 p = argptr + target_size_in;
4185 /* ...and then all the struct fiemap_extents */
4186 for (i = 0; i < fm->fm_mapped_extents; i++) {
4187 thunk_convert(p, &fm->fm_extents[i], extent_arg_type,
4188 THUNK_TARGET);
4189 p += extent_size;
4190 }
4191 }
4192 unlock_user(argptr, arg, target_size_out);
4193 }
4194 }
4195 if (free_fm) {
4196 g_free(fm);
4197 }
4198 return ret;
4199 }
4200 #endif
4201
4202 static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
4203 int fd, int cmd, abi_long arg)
4204 {
4205 const argtype *arg_type = ie->arg_type;
4206 int target_size;
4207 void *argptr;
4208 int ret;
4209 struct ifconf *host_ifconf;
4210 uint32_t outbufsz;
4211 const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) };
4212 int target_ifreq_size;
4213 int nb_ifreq;
4214 int free_buf = 0;
4215 int i;
4216 int target_ifc_len;
4217 abi_long target_ifc_buf;
4218 int host_ifc_len;
4219 char *host_ifc_buf;
4220
4221 assert(arg_type[0] == TYPE_PTR);
4222 assert(ie->access == IOC_RW);
4223
4224 arg_type++;
4225 target_size = thunk_type_size(arg_type, 0);
4226
4227 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4228 if (!argptr)
4229 return -TARGET_EFAULT;
4230 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4231 unlock_user(argptr, arg, 0);
4232
4233 host_ifconf = (struct ifconf *)(unsigned long)buf_temp;
4234 target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf;
4235 target_ifreq_size = thunk_type_size(ifreq_arg_type, 0);
4236
4237 if (target_ifc_buf != 0) {
4238 target_ifc_len = host_ifconf->ifc_len;
4239 nb_ifreq = target_ifc_len / target_ifreq_size;
4240 host_ifc_len = nb_ifreq * sizeof(struct ifreq);
4241
4242 outbufsz = sizeof(*host_ifconf) + host_ifc_len;
4243 if (outbufsz > MAX_STRUCT_SIZE) {
4244 /*
4245 * We can't fit all the extents into the fixed size buffer.
4246 * Allocate one that is large enough and use it instead.
4247 */
4248 host_ifconf = malloc(outbufsz);
4249 if (!host_ifconf) {
4250 return -TARGET_ENOMEM;
4251 }
4252 memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf));
4253 free_buf = 1;
4254 }
4255 host_ifc_buf = (char *)host_ifconf + sizeof(*host_ifconf);
4256
4257 host_ifconf->ifc_len = host_ifc_len;
4258 } else {
4259 host_ifc_buf = NULL;
4260 }
4261 host_ifconf->ifc_buf = host_ifc_buf;
4262
4263 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_ifconf));
4264 if (!is_error(ret)) {
4265 /* convert host ifc_len to target ifc_len */
4266
4267 nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq);
4268 target_ifc_len = nb_ifreq * target_ifreq_size;
4269 host_ifconf->ifc_len = target_ifc_len;
4270
4271 /* restore target ifc_buf */
4272
4273 host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf;
4274
4275 /* copy struct ifconf to target user */
4276
4277 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4278 if (!argptr)
4279 return -TARGET_EFAULT;
4280 thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET);
4281 unlock_user(argptr, arg, target_size);
4282
4283 if (target_ifc_buf != 0) {
4284 /* copy ifreq[] to target user */
4285 argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0);
4286 for (i = 0; i < nb_ifreq ; i++) {
4287 thunk_convert(argptr + i * target_ifreq_size,
4288 host_ifc_buf + i * sizeof(struct ifreq),
4289 ifreq_arg_type, THUNK_TARGET);
4290 }
4291 unlock_user(argptr, target_ifc_buf, target_ifc_len);
4292 }
4293 }
4294
4295 if (free_buf) {
4296 free(host_ifconf);
4297 }
4298
4299 return ret;
4300 }
4301
4302 #if defined(CONFIG_USBFS)
4303 #if HOST_LONG_BITS > 64
4304 #error USBDEVFS thunks do not support >64 bit hosts yet.
4305 #endif
4306 struct live_urb {
4307 uint64_t target_urb_adr;
4308 uint64_t target_buf_adr;
4309 char *target_buf_ptr;
4310 struct usbdevfs_urb host_urb;
4311 };
4312
4313 static GHashTable *usbdevfs_urb_hashtable(void)
4314 {
4315 static GHashTable *urb_hashtable;
4316
4317 if (!urb_hashtable) {
4318 urb_hashtable = g_hash_table_new(g_int64_hash, g_int64_equal);
4319 }
4320 return urb_hashtable;
4321 }
4322
4323 static void urb_hashtable_insert(struct live_urb *urb)
4324 {
4325 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4326 g_hash_table_insert(urb_hashtable, urb, urb);
4327 }
4328
4329 static struct live_urb *urb_hashtable_lookup(uint64_t target_urb_adr)
4330 {
4331 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4332 return g_hash_table_lookup(urb_hashtable, &target_urb_adr);
4333 }
4334
4335 static void urb_hashtable_remove(struct live_urb *urb)
4336 {
4337 GHashTable *urb_hashtable = usbdevfs_urb_hashtable();
4338 g_hash_table_remove(urb_hashtable, urb);
4339 }
4340
4341 static abi_long
4342 do_ioctl_usbdevfs_reapurb(const IOCTLEntry *ie, uint8_t *buf_temp,
4343 int fd, int cmd, abi_long arg)
4344 {
4345 const argtype usbfsurb_arg_type[] = { MK_STRUCT(STRUCT_usbdevfs_urb) };
4346 const argtype ptrvoid_arg_type[] = { TYPE_PTRVOID, 0, 0 };
4347 struct live_urb *lurb;
4348 void *argptr;
4349 uint64_t hurb;
4350 int target_size;
4351 uintptr_t target_urb_adr;
4352 abi_long ret;
4353
4354 target_size = thunk_type_size(usbfsurb_arg_type, THUNK_TARGET);
4355
4356 memset(buf_temp, 0, sizeof(uint64_t));
4357 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4358 if (is_error(ret)) {
4359 return ret;
4360 }
4361
4362 memcpy(&hurb, buf_temp, sizeof(uint64_t));
4363 lurb = (void *)((uintptr_t)hurb - offsetof(struct live_urb, host_urb));
4364 if (!lurb->target_urb_adr) {
4365 return -TARGET_EFAULT;
4366 }
4367 urb_hashtable_remove(lurb);
4368 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr,
4369 lurb->host_urb.buffer_length);
4370 lurb->target_buf_ptr = NULL;
4371
4372 /* restore the guest buffer pointer */
4373 lurb->host_urb.buffer = (void *)(uintptr_t)lurb->target_buf_adr;
4374
4375 /* update the guest urb struct */
4376 argptr = lock_user(VERIFY_WRITE, lurb->target_urb_adr, target_size, 0);
4377 if (!argptr) {
4378 g_free(lurb);
4379 return -TARGET_EFAULT;
4380 }
4381 thunk_convert(argptr, &lurb->host_urb, usbfsurb_arg_type, THUNK_TARGET);
4382 unlock_user(argptr, lurb->target_urb_adr, target_size);
4383
4384 target_size = thunk_type_size(ptrvoid_arg_type, THUNK_TARGET);
4385 /* write back the urb handle */
4386 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4387 if (!argptr) {
4388 g_free(lurb);
4389 return -TARGET_EFAULT;
4390 }
4391
4392 /* GHashTable uses 64-bit keys but thunk_convert expects uintptr_t */
4393 target_urb_adr = lurb->target_urb_adr;
4394 thunk_convert(argptr, &target_urb_adr, ptrvoid_arg_type, THUNK_TARGET);
4395 unlock_user(argptr, arg, target_size);
4396
4397 g_free(lurb);
4398 return ret;
4399 }
4400
4401 static abi_long
4402 do_ioctl_usbdevfs_discardurb(const IOCTLEntry *ie,
4403 uint8_t *buf_temp __attribute__((unused)),
4404 int fd, int cmd, abi_long arg)
4405 {
4406 struct live_urb *lurb;
4407
4408 /* map target address back to host URB with metadata. */
4409 lurb = urb_hashtable_lookup(arg);
4410 if (!lurb) {
4411 return -TARGET_EFAULT;
4412 }
4413 return get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4414 }
4415
4416 static abi_long
4417 do_ioctl_usbdevfs_submiturb(const IOCTLEntry *ie, uint8_t *buf_temp,
4418 int fd, int cmd, abi_long arg)
4419 {
4420 const argtype *arg_type = ie->arg_type;
4421 int target_size;
4422 abi_long ret;
4423 void *argptr;
4424 int rw_dir;
4425 struct live_urb *lurb;
4426
4427 /*
4428 * each submitted URB needs to map to a unique ID for the
4429 * kernel, and that unique ID needs to be a pointer to
4430 * host memory. hence, we need to malloc for each URB.
4431 * isochronous transfers have a variable length struct.
4432 */
4433 arg_type++;
4434 target_size = thunk_type_size(arg_type, THUNK_TARGET);
4435
4436 /* construct host copy of urb and metadata */
4437 lurb = g_try_malloc0(sizeof(struct live_urb));
4438 if (!lurb) {
4439 return -TARGET_ENOMEM;
4440 }
4441
4442 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4443 if (!argptr) {
4444 g_free(lurb);
4445 return -TARGET_EFAULT;
4446 }
4447 thunk_convert(&lurb->host_urb, argptr, arg_type, THUNK_HOST);
4448 unlock_user(argptr, arg, 0);
4449
4450 lurb->target_urb_adr = arg;
4451 lurb->target_buf_adr = (uintptr_t)lurb->host_urb.buffer;
4452
4453 /* buffer space used depends on endpoint type so lock the entire buffer */
4454 /* control type urbs should check the buffer contents for true direction */
4455 rw_dir = lurb->host_urb.endpoint & USB_DIR_IN ? VERIFY_WRITE : VERIFY_READ;
4456 lurb->target_buf_ptr = lock_user(rw_dir, lurb->target_buf_adr,
4457 lurb->host_urb.buffer_length, 1);
4458 if (lurb->target_buf_ptr == NULL) {
4459 g_free(lurb);
4460 return -TARGET_EFAULT;
4461 }
4462
4463 /* update buffer pointer in host copy */
4464 lurb->host_urb.buffer = lurb->target_buf_ptr;
4465
4466 ret = get_errno(safe_ioctl(fd, ie->host_cmd, &lurb->host_urb));
4467 if (is_error(ret)) {
4468 unlock_user(lurb->target_buf_ptr, lurb->target_buf_adr, 0);
4469 g_free(lurb);
4470 } else {
4471 urb_hashtable_insert(lurb);
4472 }
4473
4474 return ret;
4475 }
4476 #endif /* CONFIG_USBFS */
4477
4478 static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4479 int cmd, abi_long arg)
4480 {
4481 void *argptr;
4482 struct dm_ioctl *host_dm;
4483 abi_long guest_data;
4484 uint32_t guest_data_size;
4485 int target_size;
4486 const argtype *arg_type = ie->arg_type;
4487 abi_long ret;
4488 void *big_buf = NULL;
4489 char *host_data;
4490
4491 arg_type++;
4492 target_size = thunk_type_size(arg_type, 0);
4493 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4494 if (!argptr) {
4495 ret = -TARGET_EFAULT;
4496 goto out;
4497 }
4498 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4499 unlock_user(argptr, arg, 0);
4500
4501 /* buf_temp is too small, so fetch things into a bigger buffer */
4502 big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2);
4503 memcpy(big_buf, buf_temp, target_size);
4504 buf_temp = big_buf;
4505 host_dm = big_buf;
4506
4507 guest_data = arg + host_dm->data_start;
4508 if ((guest_data - arg) < 0) {
4509 ret = -TARGET_EINVAL;
4510 goto out;
4511 }
4512 guest_data_size = host_dm->data_size - host_dm->data_start;
4513 host_data = (char*)host_dm + host_dm->data_start;
4514
4515 argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1);
4516 if (!argptr) {
4517 ret = -TARGET_EFAULT;
4518 goto out;
4519 }
4520
4521 switch (ie->host_cmd) {
4522 case DM_REMOVE_ALL:
4523 case DM_LIST_DEVICES:
4524 case DM_DEV_CREATE:
4525 case DM_DEV_REMOVE:
4526 case DM_DEV_SUSPEND:
4527 case DM_DEV_STATUS:
4528 case DM_DEV_WAIT:
4529 case DM_TABLE_STATUS:
4530 case DM_TABLE_CLEAR:
4531 case DM_TABLE_DEPS:
4532 case DM_LIST_VERSIONS:
4533 /* no input data */
4534 break;
4535 case DM_DEV_RENAME:
4536 case DM_DEV_SET_GEOMETRY:
4537 /* data contains only strings */
4538 memcpy(host_data, argptr, guest_data_size);
4539 break;
4540 case DM_TARGET_MSG:
4541 memcpy(host_data, argptr, guest_data_size);
4542 *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr);
4543 break;
4544 case DM_TABLE_LOAD:
4545 {
4546 void *gspec = argptr;
4547 void *cur_data = host_data;
4548 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
4549 int spec_size = thunk_type_size(arg_type, 0);
4550 int i;
4551
4552 for (i = 0; i < host_dm->target_count; i++) {
4553 struct dm_target_spec *spec = cur_data;
4554 uint32_t next;
4555 int slen;
4556
4557 thunk_convert(spec, gspec, arg_type, THUNK_HOST);
4558 slen = strlen((char*)gspec + spec_size) + 1;
4559 next = spec->next;
4560 spec->next = sizeof(*spec) + slen;
4561 strcpy((char*)&spec[1], gspec + spec_size);
4562 gspec += next;
4563 cur_data += spec->next;
4564 }
4565 break;
4566 }
4567 default:
4568 ret = -TARGET_EINVAL;
4569 unlock_user(argptr, guest_data, 0);
4570 goto out;
4571 }
4572 unlock_user(argptr, guest_data, 0);
4573
4574 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4575 if (!is_error(ret)) {
4576 guest_data = arg + host_dm->data_start;
4577 guest_data_size = host_dm->data_size - host_dm->data_start;
4578 argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0);
4579 switch (ie->host_cmd) {
4580 case DM_REMOVE_ALL:
4581 case DM_DEV_CREATE:
4582 case DM_DEV_REMOVE:
4583 case DM_DEV_RENAME:
4584 case DM_DEV_SUSPEND:
4585 case DM_DEV_STATUS:
4586 case DM_TABLE_LOAD:
4587 case DM_TABLE_CLEAR:
4588 case DM_TARGET_MSG:
4589 case DM_DEV_SET_GEOMETRY:
4590 /* no return data */
4591 break;
4592 case DM_LIST_DEVICES:
4593 {
4594 struct dm_name_list *nl = (void*)host_dm + host_dm->data_start;
4595 uint32_t remaining_data = guest_data_size;
4596 void *cur_data = argptr;
4597 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) };
4598 int nl_size = 12; /* can't use thunk_size due to alignment */
4599
4600 while (1) {
4601 uint32_t next = nl->next;
4602 if (next) {
4603 nl->next = nl_size + (strlen(nl->name) + 1);
4604 }
4605 if (remaining_data < nl->next) {
4606 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4607 break;
4608 }
4609 thunk_convert(cur_data, nl, arg_type, THUNK_TARGET);
4610 strcpy(cur_data + nl_size, nl->name);
4611 cur_data += nl->next;
4612 remaining_data -= nl->next;
4613 if (!next) {
4614 break;
4615 }
4616 nl = (void*)nl + next;
4617 }
4618 break;
4619 }
4620 case DM_DEV_WAIT:
4621 case DM_TABLE_STATUS:
4622 {
4623 struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start;
4624 void *cur_data = argptr;
4625 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) };
4626 int spec_size = thunk_type_size(arg_type, 0);
4627 int i;
4628
4629 for (i = 0; i < host_dm->target_count; i++) {
4630 uint32_t next = spec->next;
4631 int slen = strlen((char*)&spec[1]) + 1;
4632 spec->next = (cur_data - argptr) + spec_size + slen;
4633 if (guest_data_size < spec->next) {
4634 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4635 break;
4636 }
4637 thunk_convert(cur_data, spec, arg_type, THUNK_TARGET);
4638 strcpy(cur_data + spec_size, (char*)&spec[1]);
4639 cur_data = argptr + spec->next;
4640 spec = (void*)host_dm + host_dm->data_start + next;
4641 }
4642 break;
4643 }
4644 case DM_TABLE_DEPS:
4645 {
4646 void *hdata = (void*)host_dm + host_dm->data_start;
4647 int count = *(uint32_t*)hdata;
4648 uint64_t *hdev = hdata + 8;
4649 uint64_t *gdev = argptr + 8;
4650 int i;
4651
4652 *(uint32_t*)argptr = tswap32(count);
4653 for (i = 0; i < count; i++) {
4654 *gdev = tswap64(*hdev);
4655 gdev++;
4656 hdev++;
4657 }
4658 break;
4659 }
4660 case DM_LIST_VERSIONS:
4661 {
4662 struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start;
4663 uint32_t remaining_data = guest_data_size;
4664 void *cur_data = argptr;
4665 const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) };
4666 int vers_size = thunk_type_size(arg_type, 0);
4667
4668 while (1) {
4669 uint32_t next = vers->next;
4670 if (next) {
4671 vers->next = vers_size + (strlen(vers->name) + 1);
4672 }
4673 if (remaining_data < vers->next) {
4674 host_dm->flags |= DM_BUFFER_FULL_FLAG;
4675 break;
4676 }
4677 thunk_convert(cur_data, vers, arg_type, THUNK_TARGET);
4678 strcpy(cur_data + vers_size, vers->name);
4679 cur_data += vers->next;
4680 remaining_data -= vers->next;
4681 if (!next) {
4682 break;
4683 }
4684 vers = (void*)vers + next;
4685 }
4686 break;
4687 }
4688 default:
4689 unlock_user(argptr, guest_data, 0);
4690 ret = -TARGET_EINVAL;
4691 goto out;
4692 }
4693 unlock_user(argptr, guest_data, guest_data_size);
4694
4695 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4696 if (!argptr) {
4697 ret = -TARGET_EFAULT;
4698 goto out;
4699 }
4700 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
4701 unlock_user(argptr, arg, target_size);
4702 }
4703 out:
4704 g_free(big_buf);
4705 return ret;
4706 }
4707
4708 static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
4709 int cmd, abi_long arg)
4710 {
4711 void *argptr;
4712 int target_size;
4713 const argtype *arg_type = ie->arg_type;
4714 const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) };
4715 abi_long ret;
4716
4717 struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp;
4718 struct blkpg_partition host_part;
4719
4720 /* Read and convert blkpg */
4721 arg_type++;
4722 target_size = thunk_type_size(arg_type, 0);
4723 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4724 if (!argptr) {
4725 ret = -TARGET_EFAULT;
4726 goto out;
4727 }
4728 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4729 unlock_user(argptr, arg, 0);
4730
4731 switch (host_blkpg->op) {
4732 case BLKPG_ADD_PARTITION:
4733 case BLKPG_DEL_PARTITION:
4734 /* payload is struct blkpg_partition */
4735 break;
4736 default:
4737 /* Unknown opcode */
4738 ret = -TARGET_EINVAL;
4739 goto out;
4740 }
4741
4742 /* Read and convert blkpg->data */
4743 arg = (abi_long)(uintptr_t)host_blkpg->data;
4744 target_size = thunk_type_size(part_arg_type, 0);
4745 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4746 if (!argptr) {
4747 ret = -TARGET_EFAULT;
4748 goto out;
4749 }
4750 thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST);
4751 unlock_user(argptr, arg, 0);
4752
4753 /* Swizzle the data pointer to our local copy and call! */
4754 host_blkpg->data = &host_part;
4755 ret = get_errno(safe_ioctl(fd, ie->host_cmd, host_blkpg));
4756
4757 out:
4758 return ret;
4759 }
4760
4761 static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
4762 int fd, int cmd, abi_long arg)
4763 {
4764 const argtype *arg_type = ie->arg_type;
4765 const StructEntry *se;
4766 const argtype *field_types;
4767 const int *dst_offsets, *src_offsets;
4768 int target_size;
4769 void *argptr;
4770 abi_ulong *target_rt_dev_ptr = NULL;
4771 unsigned long *host_rt_dev_ptr = NULL;
4772 abi_long ret;
4773 int i;
4774
4775 assert(ie->access == IOC_W);
4776 assert(*arg_type == TYPE_PTR);
4777 arg_type++;
4778 assert(*arg_type == TYPE_STRUCT);
4779 target_size = thunk_type_size(arg_type, 0);
4780 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4781 if (!argptr) {
4782 return -TARGET_EFAULT;
4783 }
4784 arg_type++;
4785 assert(*arg_type == (int)STRUCT_rtentry);
4786 se = struct_entries + *arg_type++;
4787 assert(se->convert[0] == NULL);
4788 /* convert struct here to be able to catch rt_dev string */
4789 field_types = se->field_types;
4790 dst_offsets = se->field_offsets[THUNK_HOST];
4791 src_offsets = se->field_offsets[THUNK_TARGET];
4792 for (i = 0; i < se->nb_fields; i++) {
4793 if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) {
4794 assert(*field_types == TYPE_PTRVOID);
4795 target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]);
4796 host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]);
4797 if (*target_rt_dev_ptr != 0) {
4798 *host_rt_dev_ptr = (unsigned long)lock_user_string(
4799 tswapal(*target_rt_dev_ptr));
4800 if (!*host_rt_dev_ptr) {
4801 unlock_user(argptr, arg, 0);
4802 return -TARGET_EFAULT;
4803 }
4804 } else {
4805 *host_rt_dev_ptr = 0;
4806 }
4807 field_types++;
4808 continue;
4809 }
4810 field_types = thunk_convert(buf_temp + dst_offsets[i],
4811 argptr + src_offsets[i],
4812 field_types, THUNK_HOST);
4813 }
4814 unlock_user(argptr, arg, 0);
4815
4816 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4817
4818 assert(host_rt_dev_ptr != NULL);
4819 assert(target_rt_dev_ptr != NULL);
4820 if (*host_rt_dev_ptr != 0) {
4821 unlock_user((void *)*host_rt_dev_ptr,
4822 *target_rt_dev_ptr, 0);
4823 }
4824 return ret;
4825 }
4826
4827 static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
4828 int fd, int cmd, abi_long arg)
4829 {
4830 int sig = target_to_host_signal(arg);
4831 return get_errno(safe_ioctl(fd, ie->host_cmd, sig));
4832 }
4833
4834 #ifdef TIOCGPTPEER
4835 static abi_long do_ioctl_tiocgptpeer(const IOCTLEntry *ie, uint8_t *buf_temp,
4836 int fd, int cmd, abi_long arg)
4837 {
4838 int flags = target_to_host_bitmask(arg, fcntl_flags_tbl);
4839 return get_errno(safe_ioctl(fd, ie->host_cmd, flags));
4840 }
4841 #endif
4842
4843 static IOCTLEntry ioctl_entries[] = {
4844 #define IOCTL(cmd, access, ...) \
4845 { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } },
4846 #define IOCTL_SPECIAL(cmd, access, dofn, ...) \
4847 { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } },
4848 #define IOCTL_IGNORE(cmd) \
4849 { TARGET_ ## cmd, 0, #cmd },
4850 #include "ioctls.h"
4851 { 0, 0, },
4852 };
4853
4854 /* ??? Implement proper locking for ioctls. */
4855 /* do_ioctl() Must return target values and target errnos. */
4856 static abi_long do_ioctl(int fd, int cmd, abi_long arg)
4857 {
4858 const IOCTLEntry *ie;
4859 const argtype *arg_type;
4860 abi_long ret;
4861 uint8_t buf_temp[MAX_STRUCT_SIZE];
4862 int target_size;
4863 void *argptr;
4864
4865 ie = ioctl_entries;
4866 for(;;) {
4867 if (ie->target_cmd == 0) {
4868 gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
4869 return -TARGET_ENOSYS;
4870 }
4871 if (ie->target_cmd == cmd)
4872 break;
4873 ie++;
4874 }
4875 arg_type = ie->arg_type;
4876 if (ie->do_ioctl) {
4877 return ie->do_ioctl(ie, buf_temp, fd, cmd, arg);
4878 } else if (!ie->host_cmd) {
4879 /* Some architectures define BSD ioctls in their headers
4880 that are not implemented in Linux. */
4881 return -TARGET_ENOSYS;
4882 }
4883
4884 switch(arg_type[0]) {
4885 case TYPE_NULL:
4886 /* no argument */
4887 ret = get_errno(safe_ioctl(fd, ie->host_cmd));
4888 break;
4889 case TYPE_PTRVOID:
4890 case TYPE_INT:
4891 ret = get_errno(safe_ioctl(fd, ie->host_cmd, arg));
4892 break;
4893 case TYPE_PTR:
4894 arg_type++;
4895 target_size = thunk_type_size(arg_type, 0);
4896 switch(ie->access) {
4897 case IOC_R:
4898 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4899 if (!is_error(ret)) {
4900 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4901 if (!argptr)
4902 return -TARGET_EFAULT;
4903 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
4904 unlock_user(argptr, arg, target_size);
4905 }
4906 break;
4907 case IOC_W:
4908 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4909 if (!argptr)
4910 return -TARGET_EFAULT;
4911 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4912 unlock_user(argptr, arg, 0);
4913 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4914 break;
4915 default:
4916 case IOC_RW:
4917 argptr = lock_user(VERIFY_READ, arg, target_size, 1);
4918 if (!argptr)
4919 return -TARGET_EFAULT;
4920 thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
4921 unlock_user(argptr, arg, 0);
4922 ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
4923 if (!is_error(ret)) {
4924 argptr = lock_user(VERIFY_WRITE, arg, target_size, 0);
4925 if (!argptr)
4926 return -TARGET_EFAULT;
4927 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
4928 unlock_user(argptr, arg, target_size);
4929 }
4930 break;
4931 }
4932 break;
4933 default:
4934 gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n",
4935 (long)cmd, arg_type[0]);
4936 ret = -TARGET_ENOSYS;
4937 break;
4938 }
4939 return ret;
4940 }
4941
4942 static const bitmask_transtbl iflag_tbl[] = {
4943 { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
4944 { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
4945 { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
4946 { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
4947 { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
4948 { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
4949 { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
4950 { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
4951 { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
4952 { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
4953 { TARGET_IXON, TARGET_IXON, IXON, IXON },
4954 { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
4955 { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
4956 { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
4957 { 0, 0, 0, 0 }
4958 };
4959
4960 static const bitmask_transtbl oflag_tbl[] = {
4961 { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
4962 { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
4963 { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
4964 { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
4965 { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
4966 { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
4967 { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
4968 { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
4969 { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
4970 { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
4971 { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
4972 { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
4973 { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
4974 { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
4975 { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
4976 { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
4977 { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
4978 { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
4979 { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
4980 { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
4981 { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
4982 { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
4983 { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
4984 { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
4985 { 0, 0, 0, 0 }
4986 };
4987
4988 static const bitmask_transtbl cflag_tbl[] = {
4989 { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
4990 { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
4991 { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
4992 { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
4993 { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
4994 { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
4995 { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
4996 { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
4997 { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
4998 { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
4999 { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
5000 { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
5001 { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
5002 { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
5003 { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
5004 { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
5005 { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
5006 { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
5007 { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
5008 { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
5009 { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
5010 { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
5011 { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
5012 { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
5013 { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
5014 { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
5015 { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
5016 { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
5017 { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
5018 { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
5019 { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
5020 { 0, 0, 0, 0 }
5021 };
5022
5023 static const bitmask_transtbl lflag_tbl[] = {
5024 { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
5025 { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
5026 { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
5027 { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
5028 { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
5029 { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
5030 { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
5031 { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
5032 { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
5033 { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
5034 { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
5035 { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
5036 { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
5037 { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
5038 { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
5039 { 0, 0, 0, 0 }
5040 };
5041
5042 static void target_to_host_termios (void *dst, const void *src)
5043 {
5044 struct host_termios *host = dst;
5045 const struct target_termios *target = src;
5046
5047 host->c_iflag =
5048 target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
5049 host->c_oflag =
5050 target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
5051 host->c_cflag =
5052 target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
5053 host->c_lflag =
5054 target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
5055 host->c_line = target->c_line;
5056
5057 memset(host->c_cc, 0, sizeof(host->c_cc));
5058 host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
5059 host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
5060 host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
5061 host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
5062 host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
5063 host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
5064 host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
5065 host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
5066 host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
5067 host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
5068 host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
5069 host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
5070 host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
5071 host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
5072 host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
5073 host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
5074 host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
5075 }
5076
5077 static void host_to_target_termios (void *dst, const void *src)
5078 {
5079 struct target_termios *target = dst;
5080 const struct host_termios *host = src;
5081
5082 target->c_iflag =
5083 tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
5084 target->c_oflag =
5085 tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
5086 target->c_cflag =
5087 tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
5088 target->c_lflag =
5089 tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
5090 target->c_line = host->c_line;
5091
5092 memset(target->c_cc, 0, sizeof(target->c_cc));
5093 target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
5094 target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
5095 target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
5096 target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
5097 target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
5098 target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
5099 target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
5100 target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
5101 target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
5102 target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
5103 target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
5104 target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
5105 target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
5106 target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
5107 target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
5108 target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
5109 target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
5110 }
5111
5112 static const StructEntry struct_termios_def = {
5113 .convert = { host_to_target_termios, target_to_host_termios },
5114 .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
5115 .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
5116 };
5117
5118 static bitmask_transtbl mmap_flags_tbl[] = {
5119 { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
5120 { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
5121 { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
5122 { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
5123 MAP_ANONYMOUS, MAP_ANONYMOUS },
5124 { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN,
5125 MAP_GROWSDOWN, MAP_GROWSDOWN },
5126 { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE,
5127 MAP_DENYWRITE, MAP_DENYWRITE },
5128 { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE,
5129 MAP_EXECUTABLE, MAP_EXECUTABLE },
5130 { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
5131 { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE,
5132 MAP_NORESERVE, MAP_NORESERVE },
5133 { TARGET_MAP_HUGETLB, TARGET_MAP_HUGETLB, MAP_HUGETLB, MAP_HUGETLB },
5134 /* MAP_STACK had been ignored by the kernel for quite some time.
5135 Recognize it for the target insofar as we do not want to pass
5136 it through to the host. */
5137 { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
5138 { 0, 0, 0, 0 }
5139 };
5140
5141 #if defined(TARGET_I386)
5142
5143 /* NOTE: there is really one LDT for all the threads */
5144 static uint8_t *ldt_table;
5145
5146 static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount)
5147 {
5148 int size;
5149 void *p;
5150
5151 if (!ldt_table)
5152 return 0;
5153 size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
5154 if (size > bytecount)
5155 size = bytecount;
5156 p = lock_user(VERIFY_WRITE, ptr, size, 0);
5157 if (!p)
5158 return -TARGET_EFAULT;
5159 /* ??? Should this by byteswapped? */
5160 memcpy(p, ldt_table, size);
5161 unlock_user(p, ptr, size);
5162 return size;
5163 }
5164
5165 /* XXX: add locking support */
5166 static abi_long write_ldt(CPUX86State *env,
5167 abi_ulong ptr, unsigned long bytecount, int oldmode)
5168 {
5169 struct target_modify_ldt_ldt_s ldt_info;
5170 struct target_modify_ldt_ldt_s *target_ldt_info;
5171 int seg_32bit, contents, read_exec_only, limit_in_pages;
5172 int seg_not_present, useable, lm;
5173 uint32_t *lp, entry_1, entry_2;
5174
5175 if (bytecount != sizeof(ldt_info))
5176 return -TARGET_EINVAL;
5177 if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1))
5178 return -TARGET_EFAULT;
5179 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5180 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5181 ldt_info.limit = tswap32(target_ldt_info->limit);
5182 ldt_info.flags = tswap32(target_ldt_info->flags);
5183 unlock_user_struct(target_ldt_info, ptr, 0);
5184
5185 if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
5186 return -TARGET_EINVAL;
5187 seg_32bit = ldt_info.flags & 1;
5188 contents = (ldt_info.flags >> 1) & 3;
5189 read_exec_only = (ldt_info.flags >> 3) & 1;
5190 limit_in_pages = (ldt_info.flags >> 4) & 1;
5191 seg_not_present = (ldt_info.flags >> 5) & 1;
5192 useable = (ldt_info.flags >> 6) & 1;
5193 #ifdef TARGET_ABI32
5194 lm = 0;
5195 #else
5196 lm = (ldt_info.flags >> 7) & 1;
5197 #endif
5198 if (contents == 3) {
5199 if (oldmode)
5200 return -TARGET_EINVAL;
5201 if (seg_not_present == 0)
5202 return -TARGET_EINVAL;
5203 }
5204 /* allocate the LDT */
5205 if (!ldt_table) {
5206 env->ldt.base = target_mmap(0,
5207 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE,
5208 PROT_READ|PROT_WRITE,
5209 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
5210 if (env->ldt.base == -1)
5211 return -TARGET_ENOMEM;
5212 memset(g2h(env->ldt.base), 0,
5213 TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
5214 env->ldt.limit = 0xffff;
5215 ldt_table = g2h(env->ldt.base);
5216 }
5217
5218 /* NOTE: same code as Linux kernel */
5219 /* Allow LDTs to be cleared by the user. */
5220 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5221 if (oldmode ||
5222 (contents == 0 &&
5223 read_exec_only == 1 &&
5224 seg_32bit == 0 &&
5225 limit_in_pages == 0 &&
5226 seg_not_present == 1 &&
5227 useable == 0 )) {
5228 entry_1 = 0;
5229 entry_2 = 0;
5230 goto install;
5231 }
5232 }
5233
5234 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5235 (ldt_info.limit & 0x0ffff);
5236 entry_2 = (ldt_info.base_addr & 0xff000000) |
5237 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5238 (ldt_info.limit & 0xf0000) |
5239 ((read_exec_only ^ 1) << 9) |
5240 (contents << 10) |
5241 ((seg_not_present ^ 1) << 15) |
5242 (seg_32bit << 22) |
5243 (limit_in_pages << 23) |
5244 (lm << 21) |
5245 0x7000;
5246 if (!oldmode)
5247 entry_2 |= (useable << 20);
5248
5249 /* Install the new entry ... */
5250 install:
5251 lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
5252 lp[0] = tswap32(entry_1);
5253 lp[1] = tswap32(entry_2);
5254 return 0;
5255 }
5256
5257 /* specific and weird i386 syscalls */
5258 static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
5259 unsigned long bytecount)
5260 {
5261 abi_long ret;
5262
5263 switch (func) {
5264 case 0:
5265 ret = read_ldt(ptr, bytecount);
5266 break;
5267 case 1:
5268 ret = write_ldt(env, ptr, bytecount, 1);
5269 break;
5270 case 0x11:
5271 ret = write_ldt(env, ptr, bytecount, 0);
5272 break;
5273 default:
5274 ret = -TARGET_ENOSYS;
5275 break;
5276 }
5277 return ret;
5278 }
5279
5280 #if defined(TARGET_I386) && defined(TARGET_ABI32)
5281 abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
5282 {
5283 uint64_t *gdt_table = g2h(env->gdt.base);
5284 struct target_modify_ldt_ldt_s ldt_info;
5285 struct target_modify_ldt_ldt_s *target_ldt_info;
5286 int seg_32bit, contents, read_exec_only, limit_in_pages;
5287 int seg_not_present, useable, lm;
5288 uint32_t *lp, entry_1, entry_2;
5289 int i;
5290
5291 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5292 if (!target_ldt_info)
5293 return -TARGET_EFAULT;
5294 ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
5295 ldt_info.base_addr = tswapal(target_ldt_info->base_addr);
5296 ldt_info.limit = tswap32(target_ldt_info->limit);
5297 ldt_info.flags = tswap32(target_ldt_info->flags);
5298 if (ldt_info.entry_number == -1) {
5299 for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) {
5300 if (gdt_table[i] == 0) {
5301 ldt_info.entry_number = i;
5302 target_ldt_info->entry_number = tswap32(i);
5303 break;
5304 }
5305 }
5306 }
5307 unlock_user_struct(target_ldt_info, ptr, 1);
5308
5309 if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN ||
5310 ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX)
5311 return -TARGET_EINVAL;
5312 seg_32bit = ldt_info.flags & 1;
5313 contents = (ldt_info.flags >> 1) & 3;
5314 read_exec_only = (ldt_info.flags >> 3) & 1;
5315 limit_in_pages = (ldt_info.flags >> 4) & 1;
5316 seg_not_present = (ldt_info.flags >> 5) & 1;
5317 useable = (ldt_info.flags >> 6) & 1;
5318 #ifdef TARGET_ABI32
5319 lm = 0;
5320 #else
5321 lm = (ldt_info.flags >> 7) & 1;
5322 #endif
5323
5324 if (contents == 3) {
5325 if (seg_not_present == 0)
5326 return -TARGET_EINVAL;
5327 }
5328
5329 /* NOTE: same code as Linux kernel */
5330 /* Allow LDTs to be cleared by the user. */
5331 if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
5332 if ((contents == 0 &&
5333 read_exec_only == 1 &&
5334 seg_32bit == 0 &&
5335 limit_in_pages == 0 &&
5336 seg_not_present == 1 &&
5337 useable == 0 )) {
5338 entry_1 = 0;
5339 entry_2 = 0;
5340 goto install;
5341 }
5342 }
5343
5344 entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
5345 (ldt_info.limit & 0x0ffff);
5346 entry_2 = (ldt_info.base_addr & 0xff000000) |
5347 ((ldt_info.base_addr & 0x00ff0000) >> 16) |
5348 (ldt_info.limit & 0xf0000) |
5349 ((read_exec_only ^ 1) << 9) |
5350 (contents << 10) |
5351 ((seg_not_present ^ 1) << 15) |
5352 (seg_32bit << 22) |
5353 (limit_in_pages << 23) |
5354 (useable << 20) |
5355 (lm << 21) |
5356 0x7000;
5357
5358 /* Install the new entry ... */
5359 install:
5360 lp = (uint32_t *)(gdt_table + ldt_info.entry_number);
5361 lp[0] = tswap32(entry_1);
5362 lp[1] = tswap32(entry_2);
5363 return 0;
5364 }
5365
5366 static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
5367 {
5368 struct target_modify_ldt_ldt_s *target_ldt_info;
5369 uint64_t *gdt_table = g2h(env->gdt.base);
5370 uint32_t base_addr, limit, flags;
5371 int seg_32bit, contents, read_exec_only, limit_in_pages, idx;
5372 int seg_not_present, useable, lm;
5373 uint32_t *lp, entry_1, entry_2;
5374
5375 lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1);
5376 if (!target_ldt_info)
5377 return -TARGET_EFAULT;
5378 idx = tswap32(target_ldt_info->entry_number);
5379 if (idx < TARGET_GDT_ENTRY_TLS_MIN ||
5380 idx > TARGET_GDT_ENTRY_TLS_MAX) {
5381 unlock_user_struct(target_ldt_info, ptr, 1);
5382 return -TARGET_EINVAL;
5383 }
5384 lp = (uint32_t *)(gdt_table + idx);
5385 entry_1 = tswap32(lp[0]);
5386 entry_2 = tswap32(lp[1]);
5387
5388 read_exec_only = ((entry_2 >> 9) & 1) ^ 1;
5389 contents = (entry_2 >> 10) & 3;
5390 seg_not_present = ((entry_2 >> 15) & 1) ^ 1;
5391 seg_32bit = (entry_2 >> 22) & 1;
5392 limit_in_pages = (entry_2 >> 23) & 1;
5393 useable = (entry_2 >> 20) & 1;
5394 #ifdef TARGET_ABI32
5395 lm = 0;
5396 #else
5397 lm = (entry_2 >> 21) & 1;
5398 #endif
5399 flags = (seg_32bit << 0) | (contents << 1) |
5400 (read_exec_only << 3) | (limit_in_pages << 4) |
5401 (seg_not_present << 5) | (useable << 6) | (lm << 7);
5402 limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000);
5403 base_addr = (entry_1 >> 16) |
5404 (entry_2 & 0xff000000) |
5405 ((entry_2 & 0xff) << 16);
5406 target_ldt_info->base_addr = tswapal(base_addr);
5407 target_ldt_info->limit = tswap32(limit);
5408 target_ldt_info->flags = tswap32(flags);
5409 unlock_user_struct(target_ldt_info, ptr, 1);
5410 return 0;
5411 }
5412 #endif /* TARGET_I386 && TARGET_ABI32 */
5413
5414 #ifndef TARGET_ABI32
5415 abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
5416 {
5417 abi_long ret = 0;
5418 abi_ulong val;
5419 int idx;
5420
5421 switch(code) {
5422 case TARGET_ARCH_SET_GS:
5423 case TARGET_ARCH_SET_FS:
5424 if (code == TARGET_ARCH_SET_GS)
5425 idx = R_GS;
5426 else
5427 idx = R_FS;
5428 cpu_x86_load_seg(env, idx, 0);
5429 env->segs[idx].base = addr;
5430 break;
5431 case TARGET_ARCH_GET_GS:
5432 case TARGET_ARCH_GET_FS:
5433 if (code == TARGET_ARCH_GET_GS)
5434 idx = R_GS;
5435 else
5436 idx = R_FS;
5437 val = env->segs[idx].base;
5438 if (put_user(val, addr, abi_ulong))
5439 ret = -TARGET_EFAULT;
5440 break;
5441 default:
5442 ret = -TARGET_EINVAL;
5443 break;
5444 }
5445 return ret;
5446 }
5447 #endif
5448
5449 #endif /* defined(TARGET_I386) */
5450
5451 #define NEW_STACK_SIZE 0x40000
5452
5453
5454 static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER;
5455 typedef struct {
5456 CPUArchState *env;
5457 pthread_mutex_t mutex;
5458 pthread_cond_t cond;
5459 pthread_t thread;
5460 uint32_t tid;
5461 abi_ulong child_tidptr;
5462 abi_ulong parent_tidptr;
5463 sigset_t sigmask;
5464 } new_thread_info;
5465
5466 static void *clone_func(void *arg)
5467 {
5468 new_thread_info *info = arg;
5469 CPUArchState *env;
5470 CPUState *cpu;
5471 TaskState *ts;
5472
5473 rcu_register_thread();
5474 tcg_register_thread();
5475 env = info->env;
5476 cpu = ENV_GET_CPU(env);
5477 thread_cpu = cpu;
5478 ts = (TaskState *)cpu->opaque;
5479 info->tid = sys_gettid();
5480 task_settid(ts);
5481 if (info->child_tidptr)
5482 put_user_u32(info->tid, info->child_tidptr);
5483 if (info->parent_tidptr)
5484 put_user_u32(info->tid, info->parent_tidptr);
5485 /* Enable signals. */
5486 sigprocmask(SIG_SETMASK, &info->sigmask, NULL);
5487 /* Signal to the parent that we're ready. */
5488 pthread_mutex_lock(&info->mutex);
5489 pthread_cond_broadcast(&info->cond);
5490 pthread_mutex_unlock(&info->mutex);
5491 /* Wait until the parent has finished initializing the tls state. */
5492 pthread_mutex_lock(&clone_lock);
5493 pthread_mutex_unlock(&clone_lock);
5494 cpu_loop(env);
5495 /* never exits */
5496 return NULL;
5497 }
5498
5499 /* do_fork() Must return host values and target errnos (unlike most
5500 do_*() functions). */
5501 static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
5502 abi_ulong parent_tidptr, target_ulong newtls,
5503 abi_ulong child_tidptr)
5504 {
5505 CPUState *cpu = ENV_GET_CPU(env);
5506 int ret;
5507 TaskState *ts;
5508 CPUState *new_cpu;
5509 CPUArchState *new_env;
5510 sigset_t sigmask;
5511
5512 flags &= ~CLONE_IGNORED_FLAGS;
5513
5514 /* Emulate vfork() with fork() */
5515 if (flags & CLONE_VFORK)
5516 flags &= ~(CLONE_VFORK | CLONE_VM);
5517
5518 if (flags & CLONE_VM) {
5519 TaskState *parent_ts = (TaskState *)cpu->opaque;
5520 new_thread_info info;
5521 pthread_attr_t attr;
5522
5523 if (((flags & CLONE_THREAD_FLAGS) != CLONE_THREAD_FLAGS) ||
5524 (flags & CLONE_INVALID_THREAD_FLAGS)) {
5525 return -TARGET_EINVAL;
5526 }
5527
5528 ts = g_new0(TaskState, 1);
5529 init_task_state(ts);
5530
5531 /* Grab a mutex so that thread setup appears atomic. */
5532 pthread_mutex_lock(&clone_lock);
5533
5534 /* we create a new CPU instance. */
5535 new_env = cpu_copy(env);
5536 /* Init regs that differ from the parent. */
5537 cpu_clone_regs(new_env, newsp);
5538 new_cpu = ENV_GET_CPU(new_env);
5539 new_cpu->opaque = ts;
5540 ts->bprm = parent_ts->bprm;
5541 ts->info = parent_ts->info;
5542 ts->signal_mask = parent_ts->signal_mask;
5543
5544 if (flags & CLONE_CHILD_CLEARTID) {
5545 ts->child_tidptr = child_tidptr;
5546 }
5547
5548 if (flags & CLONE_SETTLS) {
5549 cpu_set_tls (new_env, newtls);
5550 }
5551
5552 memset(&info, 0, sizeof(info));
5553 pthread_mutex_init(&info.mutex, NULL);
5554 pthread_mutex_lock(&info.mutex);
5555 pthread_cond_init(&info.cond, NULL);
5556 info.env = new_env;
5557 if (flags & CLONE_CHILD_SETTID) {
5558 info.child_tidptr = child_tidptr;
5559 }
5560 if (flags & CLONE_PARENT_SETTID) {
5561 info.parent_tidptr = parent_tidptr;
5562 }
5563
5564 ret = pthread_attr_init(&attr);
5565 ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE);
5566 ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
5567 /* It is not safe to deliver signals until the child has finished
5568 initializing, so temporarily block all signals. */
5569 sigfillset(&sigmask);
5570 sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask);
5571
5572 /* If this is our first additional thread, we need to ensure we
5573 * generate code for parallel execution and flush old translations.
5574 */
5575 if (!parallel_cpus) {
5576 parallel_cpus = true;
5577 tb_flush(cpu);
5578 }
5579
5580 ret = pthread_create(&info.thread, &attr, clone_func, &info);
5581 /* TODO: Free new CPU state if thread creation failed. */
5582
5583 sigprocmask(SIG_SETMASK, &info.sigmask, NULL);
5584 pthread_attr_destroy(&attr);
5585 if (ret == 0) {
5586 /* Wait for the child to initialize. */
5587 pthread_cond_wait(&info.cond, &info.mutex);
5588 ret = info.tid;
5589 } else {
5590 ret = -1;
5591 }
5592 pthread_mutex_unlock(&info.mutex);
5593 pthread_cond_destroy(&info.cond);
5594 pthread_mutex_destroy(&info.mutex);
5595 pthread_mutex_unlock(&clone_lock);
5596 } else {
5597 /* if no CLONE_VM, we consider it is a fork */
5598 if (flags & CLONE_INVALID_FORK_FLAGS) {
5599 return -TARGET_EINVAL;
5600 }
5601
5602 /* We can't support custom termination signals */
5603 if ((flags & CSIGNAL) != TARGET_SIGCHLD) {
5604 return -TARGET_EINVAL;
5605 }
5606
5607 if (block_signals()) {
5608 return -TARGET_ERESTARTSYS;
5609 }
5610
5611 fork_start();
5612 ret = fork();
5613 if (ret == 0) {
5614 /* Child Process. */
5615 cpu_clone_regs(env, newsp);
5616 fork_end(1);
5617 /* There is a race condition here. The parent process could
5618 theoretically read the TID in the child process before the child
5619 tid is set. This would require using either ptrace
5620 (not implemented) or having *_tidptr to point at a shared memory
5621 mapping. We can't repeat the spinlock hack used above because
5622 the child process gets its own copy of the lock. */
5623 if (flags & CLONE_CHILD_SETTID)
5624 put_user_u32(sys_gettid(), child_tidptr);
5625 if (flags & CLONE_PARENT_SETTID)
5626 put_user_u32(sys_gettid(), parent_tidptr);
5627 ts = (TaskState *)cpu->opaque;
5628 if (flags & CLONE_SETTLS)
5629 cpu_set_tls (env, newtls);
5630 if (flags & CLONE_CHILD_CLEARTID)
5631 ts->child_tidptr = child_tidptr;
5632 } else {
5633 fork_end(0);
5634 }
5635 }
5636 return ret;
5637 }
5638
5639 /* warning : doesn't handle linux specific flags... */
5640 static int target_to_host_fcntl_cmd(int cmd)
5641 {
5642 int ret;
5643
5644 switch(cmd) {
5645 case TARGET_F_DUPFD:
5646 case TARGET_F_GETFD:
5647 case TARGET_F_SETFD:
5648 case TARGET_F_GETFL:
5649 case TARGET_F_SETFL:
5650 ret = cmd;
5651 break;
5652 case TARGET_F_GETLK:
5653 ret = F_GETLK64;
5654 break;
5655 case TARGET_F_SETLK:
5656 ret = F_SETLK64;
5657 break;
5658 case TARGET_F_SETLKW:
5659 ret = F_SETLKW64;
5660 break;
5661 case TARGET_F_GETOWN:
5662 ret = F_GETOWN;
5663 break;
5664 case TARGET_F_SETOWN:
5665 ret = F_SETOWN;
5666 break;
5667 case TARGET_F_GETSIG:
5668 ret = F_GETSIG;
5669 break;
5670 case TARGET_F_SETSIG:
5671 ret = F_SETSIG;
5672 break;
5673 #if TARGET_ABI_BITS == 32
5674 case TARGET_F_GETLK64:
5675 ret = F_GETLK64;
5676 break;
5677 case TARGET_F_SETLK64:
5678 ret = F_SETLK64;
5679 break;
5680 case TARGET_F_SETLKW64:
5681 ret = F_SETLKW64;
5682 break;
5683 #endif
5684 case TARGET_F_SETLEASE:
5685 ret = F_SETLEASE;
5686 break;
5687 case TARGET_F_GETLEASE:
5688 ret = F_GETLEASE;
5689 break;
5690 #ifdef F_DUPFD_CLOEXEC
5691 case TARGET_F_DUPFD_CLOEXEC:
5692 ret = F_DUPFD_CLOEXEC;
5693 break;
5694 #endif
5695 case TARGET_F_NOTIFY:
5696 ret = F_NOTIFY;
5697 break;
5698 #ifdef F_GETOWN_EX
5699 case TARGET_F_GETOWN_EX:
5700 ret = F_GETOWN_EX;
5701 break;
5702 #endif
5703 #ifdef F_SETOWN_EX
5704 case TARGET_F_SETOWN_EX:
5705 ret = F_SETOWN_EX;
5706 break;
5707 #endif
5708 #ifdef F_SETPIPE_SZ
5709 case TARGET_F_SETPIPE_SZ:
5710 ret = F_SETPIPE_SZ;
5711 break;
5712 case TARGET_F_GETPIPE_SZ:
5713 ret = F_GETPIPE_SZ;
5714 break;
5715 #endif
5716 default:
5717 ret = -TARGET_EINVAL;
5718 break;
5719 }
5720
5721 #if defined(__powerpc64__)
5722 /* On PPC64, glibc headers has the F_*LK* defined to 12, 13 and 14 and
5723 * is not supported by kernel. The glibc fcntl call actually adjusts
5724 * them to 5, 6 and 7 before making the syscall(). Since we make the
5725 * syscall directly, adjust to what is supported by the kernel.
5726 */
5727 if (ret >= F_GETLK64 && ret <= F_SETLKW64) {
5728 ret -= F_GETLK64 - 5;
5729 }
5730 #endif
5731
5732 return ret;
5733 }
5734
5735 #define FLOCK_TRANSTBL \
5736 switch (type) { \
5737 TRANSTBL_CONVERT(F_RDLCK); \
5738 TRANSTBL_CONVERT(F_WRLCK); \
5739 TRANSTBL_CONVERT(F_UNLCK); \
5740 TRANSTBL_CONVERT(F_EXLCK); \
5741 TRANSTBL_CONVERT(F_SHLCK); \
5742 }
5743
5744 static int target_to_host_flock(int type)
5745 {
5746 #define TRANSTBL_CONVERT(a) case TARGET_##a: return a
5747 FLOCK_TRANSTBL
5748 #undef TRANSTBL_CONVERT
5749 return -TARGET_EINVAL;
5750 }
5751
5752 static int host_to_target_flock(int type)
5753 {
5754 #define TRANSTBL_CONVERT(a) case a: return TARGET_##a
5755 FLOCK_TRANSTBL
5756 #undef TRANSTBL_CONVERT
5757 /* if we don't know how to convert the value coming
5758 * from the host we copy to the target field as-is
5759 */
5760 return type;
5761 }
5762
5763 static inline abi_long copy_from_user_flock(struct flock64 *fl,
5764 abi_ulong target_flock_addr)
5765 {
5766 struct target_flock *target_fl;
5767 int l_type;
5768
5769 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
5770 return -TARGET_EFAULT;
5771 }
5772
5773 __get_user(l_type, &target_fl->l_type);
5774 l_type = target_to_host_flock(l_type);
5775 if (l_type < 0) {
5776 return l_type;
5777 }
5778 fl->l_type = l_type;
5779 __get_user(fl->l_whence, &target_fl->l_whence);
5780 __get_user(fl->l_start, &target_fl->l_start);
5781 __get_user(fl->l_len, &target_fl->l_len);
5782 __get_user(fl->l_pid, &target_fl->l_pid);
5783 unlock_user_struct(target_fl, target_flock_addr, 0);
5784 return 0;
5785 }
5786
5787 static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr,
5788 const struct flock64 *fl)
5789 {
5790 struct target_flock *target_fl;
5791 short l_type;
5792
5793 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
5794 return -TARGET_EFAULT;
5795 }
5796
5797 l_type = host_to_target_flock(fl->l_type);
5798 __put_user(l_type, &target_fl->l_type);
5799 __put_user(fl->l_whence, &target_fl->l_whence);
5800 __put_user(fl->l_start, &target_fl->l_start);
5801 __put_user(fl->l_len, &target_fl->l_len);
5802 __put_user(fl->l_pid, &target_fl->l_pid);
5803 unlock_user_struct(target_fl, target_flock_addr, 1);
5804 return 0;
5805 }
5806
5807 typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr);
5808 typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl);
5809
5810 #if defined(TARGET_ARM) && TARGET_ABI_BITS == 32
5811 static inline abi_long copy_from_user_oabi_flock64(struct flock64 *fl,
5812 abi_ulong target_flock_addr)
5813 {
5814 struct target_oabi_flock64 *target_fl;
5815 int l_type;
5816
5817 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
5818 return -TARGET_EFAULT;
5819 }
5820
5821 __get_user(l_type, &target_fl->l_type);
5822 l_type = target_to_host_flock(l_type);
5823 if (l_type < 0) {
5824 return l_type;
5825 }
5826 fl->l_type = l_type;
5827 __get_user(fl->l_whence, &target_fl->l_whence);
5828 __get_user(fl->l_start, &target_fl->l_start);
5829 __get_user(fl->l_len, &target_fl->l_len);
5830 __get_user(fl->l_pid, &target_fl->l_pid);
5831 unlock_user_struct(target_fl, target_flock_addr, 0);
5832 return 0;
5833 }
5834
5835 static inline abi_long copy_to_user_oabi_flock64(abi_ulong target_flock_addr,
5836 const struct flock64 *fl)
5837 {
5838 struct target_oabi_flock64 *target_fl;
5839 short l_type;
5840
5841 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
5842 return -TARGET_EFAULT;
5843 }
5844
5845 l_type = host_to_target_flock(fl->l_type);
5846 __put_user(l_type, &target_fl->l_type);
5847 __put_user(fl->l_whence, &target_fl->l_whence);
5848 __put_user(fl->l_start, &target_fl->l_start);
5849 __put_user(fl->l_len, &target_fl->l_len);
5850 __put_user(fl->l_pid, &target_fl->l_pid);
5851 unlock_user_struct(target_fl, target_flock_addr, 1);
5852 return 0;
5853 }
5854 #endif
5855
5856 static inline abi_long copy_from_user_flock64(struct flock64 *fl,
5857 abi_ulong target_flock_addr)
5858 {
5859 struct target_flock64 *target_fl;
5860 int l_type;
5861
5862 if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) {
5863 return -TARGET_EFAULT;
5864 }
5865
5866 __get_user(l_type, &target_fl->l_type);
5867 l_type = target_to_host_flock(l_type);
5868 if (l_type < 0) {
5869 return l_type;
5870 }
5871 fl->l_type = l_type;
5872 __get_user(fl->l_whence, &target_fl->l_whence);
5873 __get_user(fl->l_start, &target_fl->l_start);
5874 __get_user(fl->l_len, &target_fl->l_len);
5875 __get_user(fl->l_pid, &target_fl->l_pid);
5876 unlock_user_struct(target_fl, target_flock_addr, 0);
5877 return 0;
5878 }
5879
5880 static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr,
5881 const struct flock64 *fl)
5882 {
5883 struct target_flock64 *target_fl;
5884 short l_type;
5885
5886 if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) {
5887 return -TARGET_EFAULT;
5888 }
5889
5890 l_type = host_to_target_flock(fl->l_type);
5891 __put_user(l_type, &target_fl->l_type);
5892 __put_user(fl->l_whence, &target_fl->l_whence);
5893 __put_user(fl->l_start, &target_fl->l_start);
5894 __put_user(fl->l_len, &target_fl->l_len);
5895 __put_user(fl->l_pid, &target_fl->l_pid);
5896 unlock_user_struct(target_fl, target_flock_addr, 1);
5897 return 0;
5898 }
5899
5900 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
5901 {
5902 struct flock64 fl64;
5903 #ifdef F_GETOWN_EX
5904 struct f_owner_ex fox;
5905 struct target_f_owner_ex *target_fox;
5906 #endif
5907 abi_long ret;
5908 int host_cmd = target_to_host_fcntl_cmd(cmd);
5909
5910 if (host_cmd == -TARGET_EINVAL)
5911 return host_cmd;
5912
5913 switch(cmd) {
5914 case TARGET_F_GETLK:
5915 ret = copy_from_user_flock(&fl64, arg);
5916 if (ret) {
5917 return ret;
5918 }
5919 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
5920 if (ret == 0) {
5921 ret = copy_to_user_flock(arg, &fl64);
5922 }
5923 break;
5924
5925 case TARGET_F_SETLK:
5926 case TARGET_F_SETLKW:
5927 ret = copy_from_user_flock(&fl64, arg);
5928 if (ret) {
5929 return ret;
5930 }
5931 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
5932 break;
5933
5934 case TARGET_F_GETLK64:
5935 ret = copy_from_user_flock64(&fl64, arg);
5936 if (ret) {
5937 return ret;
5938 }
5939 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
5940 if (ret == 0) {
5941 ret = copy_to_user_flock64(arg, &fl64);
5942 }
5943 break;
5944 case TARGET_F_SETLK64:
5945 case TARGET_F_SETLKW64:
5946 ret = copy_from_user_flock64(&fl64, arg);
5947 if (ret) {
5948 return ret;
5949 }
5950 ret = get_errno(safe_fcntl(fd, host_cmd, &fl64));
5951 break;
5952
5953 case TARGET_F_GETFL:
5954 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
5955 if (ret >= 0) {
5956 ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
5957 }
5958 break;
5959
5960 case TARGET_F_SETFL:
5961 ret = get_errno(safe_fcntl(fd, host_cmd,
5962 target_to_host_bitmask(arg,
5963 fcntl_flags_tbl)));
5964 break;
5965
5966 #ifdef F_GETOWN_EX
5967 case TARGET_F_GETOWN_EX:
5968 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
5969 if (ret >= 0) {
5970 if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0))
5971 return -TARGET_EFAULT;
5972 target_fox->type = tswap32(fox.type);
5973 target_fox->pid = tswap32(fox.pid);
5974 unlock_user_struct(target_fox, arg, 1);
5975 }
5976 break;
5977 #endif
5978
5979 #ifdef F_SETOWN_EX
5980 case TARGET_F_SETOWN_EX:
5981 if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1))
5982 return -TARGET_EFAULT;
5983 fox.type = tswap32(target_fox->type);
5984 fox.pid = tswap32(target_fox->pid);
5985 unlock_user_struct(target_fox, arg, 0);
5986 ret = get_errno(safe_fcntl(fd, host_cmd, &fox));
5987 break;
5988 #endif
5989
5990 case TARGET_F_SETOWN:
5991 case TARGET_F_GETOWN:
5992 case TARGET_F_SETSIG:
5993 case TARGET_F_GETSIG:
5994 case TARGET_F_SETLEASE:
5995 case TARGET_F_GETLEASE:
5996 case TARGET_F_SETPIPE_SZ:
5997 case TARGET_F_GETPIPE_SZ:
5998 ret = get_errno(safe_fcntl(fd, host_cmd, arg));
5999 break;
6000
6001 default:
6002 ret = get_errno(safe_fcntl(fd, cmd, arg));
6003 break;
6004 }
6005 return ret;
6006 }
6007
6008 #ifdef USE_UID16
6009
6010 static inline int high2lowuid(int uid)
6011 {
6012 if (uid > 65535)
6013 return 65534;
6014 else
6015 return uid;
6016 }
6017
6018 static inline int high2lowgid(int gid)
6019 {
6020 if (gid > 65535)
6021 return 65534;
6022 else
6023 return gid;
6024 }
6025
6026 static inline int low2highuid(int uid)
6027 {
6028 if ((int16_t)uid == -1)
6029 return -1;
6030 else
6031 return uid;
6032 }
6033
6034 static inline int low2highgid(int gid)
6035 {
6036 if ((int16_t)gid == -1)
6037 return -1;
6038 else
6039 return gid;
6040 }
6041 static inline int tswapid(int id)
6042 {
6043 return tswap16(id);
6044 }
6045
6046 #define put_user_id(x, gaddr) put_user_u16(x, gaddr)
6047
6048 #else /* !USE_UID16 */
6049 static inline int high2lowuid(int uid)
6050 {
6051 return uid;
6052 }
6053 static inline int high2lowgid(int gid)
6054 {
6055 return gid;
6056 }
6057 static inline int low2highuid(int uid)
6058 {
6059 return uid;
6060 }
6061 static inline int low2highgid(int gid)
6062 {
6063 return gid;
6064 }
6065 static inline int tswapid(int id)
6066 {
6067 return tswap32(id);
6068 }
6069
6070 #define put_user_id(x, gaddr) put_user_u32(x, gaddr)
6071
6072 #endif /* USE_UID16 */
6073
6074 /* We must do direct syscalls for setting UID/GID, because we want to
6075 * implement the Linux system call semantics of "change only for this thread",
6076 * not the libc/POSIX semantics of "change for all threads in process".
6077 * (See http://ewontfix.com/17/ for more details.)
6078 * We use the 32-bit version of the syscalls if present; if it is not
6079 * then either the host architecture supports 32-bit UIDs natively with
6080 * the standard syscall, or the 16-bit UID is the best we can do.
6081 */
6082 #ifdef __NR_setuid32
6083 #define __NR_sys_setuid __NR_setuid32
6084 #else
6085 #define __NR_sys_setuid __NR_setuid
6086 #endif
6087 #ifdef __NR_setgid32
6088 #define __NR_sys_setgid __NR_setgid32
6089 #else
6090 #define __NR_sys_setgid __NR_setgid
6091 #endif
6092 #ifdef __NR_setresuid32
6093 #define __NR_sys_setresuid __NR_setresuid32
6094 #else
6095 #define __NR_sys_setresuid __NR_setresuid
6096 #endif
6097 #ifdef __NR_setresgid32
6098 #define __NR_sys_setresgid __NR_setresgid32
6099 #else
6100 #define __NR_sys_setresgid __NR_setresgid
6101 #endif
6102
6103 _syscall1(int, sys_setuid, uid_t, uid)
6104 _syscall1(int, sys_setgid, gid_t, gid)
6105 _syscall3(int, sys_setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
6106 _syscall3(int, sys_setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
6107
6108 void syscall_init(void)
6109 {
6110 IOCTLEntry *ie;
6111 const argtype *arg_type;
6112 int size;
6113 int i;
6114
6115 thunk_init(STRUCT_MAX);
6116
6117 #define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
6118 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
6119 #include "syscall_types.h"
6120 #undef STRUCT
6121 #undef STRUCT_SPECIAL
6122
6123 /* Build target_to_host_errno_table[] table from
6124 * host_to_target_errno_table[]. */
6125 for (i = 0; i < ERRNO_TABLE_SIZE; i++) {
6126 target_to_host_errno_table[host_to_target_errno_table[i]] = i;
6127 }
6128
6129 /* we patch the ioctl size if necessary. We rely on the fact that
6130 no ioctl has all the bits at '1' in the size field */
6131 ie = ioctl_entries;
6132 while (ie->target_cmd != 0) {
6133 if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
6134 TARGET_IOC_SIZEMASK) {
6135 arg_type = ie->arg_type;
6136 if (arg_type[0] != TYPE_PTR) {
6137 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
6138 ie->target_cmd);
6139 exit(1);
6140 }
6141 arg_type++;
6142 size = thunk_type_size(arg_type, 0);
6143 ie->target_cmd = (ie->target_cmd &
6144 ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
6145 (size << TARGET_IOC_SIZESHIFT);
6146 }
6147
6148 /* automatic consistency check if same arch */
6149 #if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \
6150 (defined(__x86_64__) && defined(TARGET_X86_64))
6151 if (unlikely(ie->target_cmd != ie->host_cmd)) {
6152 fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n",
6153 ie->name, ie->target_cmd, ie->host_cmd);
6154 }
6155 #endif
6156 ie++;
6157 }
6158 }
6159
6160 #if TARGET_ABI_BITS == 32
6161 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
6162 {
6163 #ifdef TARGET_WORDS_BIGENDIAN
6164 return ((uint64_t)word0 << 32) | word1;
6165 #else
6166 return ((uint64_t)word1 << 32) | word0;
6167 #endif
6168 }
6169 #else /* TARGET_ABI_BITS == 32 */
6170 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
6171 {
6172 return word0;
6173 }
6174 #endif /* TARGET_ABI_BITS != 32 */
6175
6176 #ifdef TARGET_NR_truncate64
6177 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
6178 abi_long arg2,
6179 abi_long arg3,
6180 abi_long arg4)
6181 {
6182 if (regpairs_aligned(cpu_env, TARGET_NR_truncate64)) {
6183 arg2 = arg3;
6184 arg3 = arg4;
6185 }
6186 return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
6187 }
6188 #endif
6189
6190 #ifdef TARGET_NR_ftruncate64
6191 static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1,
6192 abi_long arg2,
6193 abi_long arg3,
6194 abi_long arg4)
6195 {
6196 if (regpairs_aligned(cpu_env, TARGET_NR_ftruncate64)) {
6197 arg2 = arg3;
6198 arg3 = arg4;
6199 }
6200 return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
6201 }
6202 #endif
6203
6204 static inline abi_long target_to_host_timespec(struct timespec *host_ts,
6205 abi_ulong target_addr)
6206 {
6207 struct target_timespec *target_ts;
6208
6209 if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1))
6210 return -TARGET_EFAULT;
6211 __get_user(host_ts->tv_sec, &target_ts->tv_sec);
6212 __get_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6213 unlock_user_struct(target_ts, target_addr, 0);
6214 return 0;
6215 }
6216
6217 static inline abi_long host_to_target_timespec(abi_ulong target_addr,
6218 struct timespec *host_ts)
6219 {
6220 struct target_timespec *target_ts;
6221
6222 if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0))
6223 return -TARGET_EFAULT;
6224 __put_user(host_ts->tv_sec, &target_ts->tv_sec);
6225 __put_user(host_ts->tv_nsec, &target_ts->tv_nsec);
6226 unlock_user_struct(target_ts, target_addr, 1);
6227 return 0;
6228 }
6229
6230 static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec,
6231 abi_ulong target_addr)
6232 {
6233 struct target_itimerspec *target_itspec;
6234
6235 if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) {
6236 return -TARGET_EFAULT;
6237 }
6238
6239 host_itspec->it_interval.tv_sec =
6240 tswapal(target_itspec->it_interval.tv_sec);
6241 host_itspec->it_interval.tv_nsec =
6242 tswapal(target_itspec->it_interval.tv_nsec);
6243 host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec);
6244 host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec);
6245
6246 unlock_user_struct(target_itspec, target_addr, 1);
6247 return 0;
6248 }
6249
6250 static inline abi_long host_to_target_itimerspec(abi_ulong target_addr,
6251 struct itimerspec *host_its)
6252 {
6253 struct target_itimerspec *target_itspec;
6254
6255 if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) {
6256 return -TARGET_EFAULT;
6257 }
6258
6259 target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec);
6260 target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec);
6261
6262 target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec);
6263 target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec);
6264
6265 unlock_user_struct(target_itspec, target_addr, 0);
6266 return 0;
6267 }
6268
6269 static inline abi_long target_to_host_timex(struct timex *host_tx,
6270 abi_long target_addr)
6271 {
6272 struct target_timex *target_tx;
6273
6274 if (!lock_user_struct(VERIFY_READ, target_tx, target_addr, 1)) {
6275 return -TARGET_EFAULT;
6276 }
6277
6278 __get_user(host_tx->modes, &target_tx->modes);
6279 __get_user(host_tx->offset, &target_tx->offset);
6280 __get_user(host_tx->freq, &target_tx->freq);
6281 __get_user(host_tx->maxerror, &target_tx->maxerror);
6282 __get_user(host_tx->esterror, &target_tx->esterror);
6283 __get_user(host_tx->status, &target_tx->status);
6284 __get_user(host_tx->constant, &target_tx->constant);
6285 __get_user(host_tx->precision, &target_tx->precision);
6286 __get_user(host_tx->tolerance, &target_tx->tolerance);
6287 __get_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6288 __get_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6289 __get_user(host_tx->tick, &target_tx->tick);
6290 __get_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6291 __get_user(host_tx->jitter, &target_tx->jitter);
6292 __get_user(host_tx->shift, &target_tx->shift);
6293 __get_user(host_tx->stabil, &target_tx->stabil);
6294 __get_user(host_tx->jitcnt, &target_tx->jitcnt);
6295 __get_user(host_tx->calcnt, &target_tx->calcnt);
6296 __get_user(host_tx->errcnt, &target_tx->errcnt);
6297 __get_user(host_tx->stbcnt, &target_tx->stbcnt);
6298 __get_user(host_tx->tai, &target_tx->tai);
6299
6300 unlock_user_struct(target_tx, target_addr, 0);
6301 return 0;
6302 }
6303
6304 static inline abi_long host_to_target_timex(abi_long target_addr,
6305 struct timex *host_tx)
6306 {
6307 struct target_timex *target_tx;
6308
6309 if (!lock_user_struct(VERIFY_WRITE, target_tx, target_addr, 0)) {
6310 return -TARGET_EFAULT;
6311 }
6312
6313 __put_user(host_tx->modes, &target_tx->modes);
6314 __put_user(host_tx->offset, &target_tx->offset);
6315 __put_user(host_tx->freq, &target_tx->freq);
6316 __put_user(host_tx->maxerror, &target_tx->maxerror);
6317 __put_user(host_tx->esterror, &target_tx->esterror);
6318 __put_user(host_tx->status, &target_tx->status);
6319 __put_user(host_tx->constant, &target_tx->constant);
6320 __put_user(host_tx->precision, &target_tx->precision);
6321 __put_user(host_tx->tolerance, &target_tx->tolerance);
6322 __put_user(host_tx->time.tv_sec, &target_tx->time.tv_sec);
6323 __put_user(host_tx->time.tv_usec, &target_tx->time.tv_usec);
6324 __put_user(host_tx->tick, &target_tx->tick);
6325 __put_user(host_tx->ppsfreq, &target_tx->ppsfreq);
6326 __put_user(host_tx->jitter, &target_tx->jitter);
6327 __put_user(host_tx->shift, &target_tx->shift);
6328 __put_user(host_tx->stabil, &target_tx->stabil);
6329 __put_user(host_tx->jitcnt, &target_tx->jitcnt);
6330 __put_user(host_tx->calcnt, &target_tx->calcnt);
6331 __put_user(host_tx->errcnt, &target_tx->errcnt);
6332 __put_user(host_tx->stbcnt, &target_tx->stbcnt);
6333 __put_user(host_tx->tai, &target_tx->tai);
6334
6335 unlock_user_struct(target_tx, target_addr, 1);
6336 return 0;
6337 }
6338
6339
6340 static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp,
6341 abi_ulong target_addr)
6342 {
6343 struct target_sigevent *target_sevp;
6344
6345 if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) {
6346 return -TARGET_EFAULT;
6347 }
6348
6349 /* This union is awkward on 64 bit systems because it has a 32 bit
6350 * integer and a pointer in it; we follow the conversion approach
6351 * used for handling sigval types in signal.c so the guest should get
6352 * the correct value back even if we did a 64 bit byteswap and it's
6353 * using the 32 bit integer.
6354 */
6355 host_sevp->sigev_value.sival_ptr =
6356 (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr);
6357 host_sevp->sigev_signo =
6358 target_to_host_signal(tswap32(target_sevp->sigev_signo));
6359 host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify);
6360 host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid);
6361
6362 unlock_user_struct(target_sevp, target_addr, 1);
6363 return 0;
6364 }
6365
6366 #if defined(TARGET_NR_mlockall)
6367 static inline int target_to_host_mlockall_arg(int arg)
6368 {
6369 int result = 0;
6370
6371 if (arg & TARGET_MLOCKALL_MCL_CURRENT) {
6372 result |= MCL_CURRENT;
6373 }
6374 if (arg & TARGET_MLOCKALL_MCL_FUTURE) {
6375 result |= MCL_FUTURE;
6376 }
6377 return result;
6378 }
6379 #endif
6380
6381 #if (defined(TARGET_NR_stat64) || defined(TARGET_NR_lstat64) || \
6382 defined(TARGET_NR_fstat64) || defined(TARGET_NR_fstatat64) || \
6383 defined(TARGET_NR_newfstatat))
6384 static inline abi_long host_to_target_stat64(void *cpu_env,
6385 abi_ulong target_addr,
6386 struct stat *host_st)
6387 {
6388 #if defined(TARGET_ARM) && defined(TARGET_ABI32)
6389 if (((CPUARMState *)cpu_env)->eabi) {
6390 struct target_eabi_stat64 *target_st;
6391
6392 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6393 return -TARGET_EFAULT;
6394 memset(target_st, 0, sizeof(struct target_eabi_stat64));
6395 __put_user(host_st->st_dev, &target_st->st_dev);
6396 __put_user(host_st->st_ino, &target_st->st_ino);
6397 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6398 __put_user(host_st->st_ino, &target_st->__st_ino);
6399 #endif
6400 __put_user(host_st->st_mode, &target_st->st_mode);
6401 __put_user(host_st->st_nlink, &target_st->st_nlink);
6402 __put_user(host_st->st_uid, &target_st->st_uid);
6403 __put_user(host_st->st_gid, &target_st->st_gid);
6404 __put_user(host_st->st_rdev, &target_st->st_rdev);
6405 __put_user(host_st->st_size, &target_st->st_size);
6406 __put_user(host_st->st_blksize, &target_st->st_blksize);
6407 __put_user(host_st->st_blocks, &target_st->st_blocks);
6408 __put_user(host_st->st_atime, &target_st->target_st_atime);
6409 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6410 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6411 unlock_user_struct(target_st, target_addr, 1);
6412 } else
6413 #endif
6414 {
6415 #if defined(TARGET_HAS_STRUCT_STAT64)
6416 struct target_stat64 *target_st;
6417 #else
6418 struct target_stat *target_st;
6419 #endif
6420
6421 if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0))
6422 return -TARGET_EFAULT;
6423 memset(target_st, 0, sizeof(*target_st));
6424 __put_user(host_st->st_dev, &target_st->st_dev);
6425 __put_user(host_st->st_ino, &target_st->st_ino);
6426 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
6427 __put_user(host_st->st_ino, &target_st->__st_ino);
6428 #endif
6429 __put_user(host_st->st_mode, &target_st->st_mode);
6430 __put_user(host_st->st_nlink, &target_st->st_nlink);
6431 __put_user(host_st->st_uid, &target_st->st_uid);
6432 __put_user(host_st->st_gid, &target_st->st_gid);
6433 __put_user(host_st->st_rdev, &target_st->st_rdev);
6434 /* XXX: better use of kernel struct */
6435 __put_user(host_st->st_size, &target_st->st_size);
6436 __put_user(host_st->st_blksize, &target_st->st_blksize);
6437 __put_user(host_st->st_blocks, &target_st->st_blocks);
6438 __put_user(host_st->st_atime, &target_st->target_st_atime);
6439 __put_user(host_st->st_mtime, &target_st->target_st_mtime);
6440 __put_user(host_st->st_ctime, &target_st->target_st_ctime);
6441 unlock_user_struct(target_st, target_addr, 1);
6442 }
6443
6444 return 0;
6445 }
6446 #endif
6447
6448 /* ??? Using host futex calls even when target atomic operations
6449 are not really atomic probably breaks things. However implementing
6450 futexes locally would make futexes shared between multiple processes
6451 tricky. However they're probably useless because guest atomic
6452 operations won't work either. */
6453 static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout,
6454 target_ulong uaddr2, int val3)
6455 {
6456 struct timespec ts, *pts;
6457 int base_op;
6458
6459 /* ??? We assume FUTEX_* constants are the same on both host
6460 and target. */
6461 #ifdef FUTEX_CMD_MASK
6462 base_op = op & FUTEX_CMD_MASK;
6463 #else
6464 base_op = op;
6465 #endif
6466 switch (base_op) {
6467 case FUTEX_WAIT:
6468 case FUTEX_WAIT_BITSET:
6469 if (timeout) {
6470 pts = &ts;
6471 target_to_host_timespec(pts, timeout);
6472 } else {
6473 pts = NULL;
6474 }
6475 return get_errno(safe_futex(g2h(uaddr), op, tswap32(val),
6476 pts, NULL, val3));
6477 case FUTEX_WAKE:
6478 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
6479 case FUTEX_FD:
6480 return get_errno(safe_futex(g2h(uaddr), op, val, NULL, NULL, 0));
6481 case FUTEX_REQUEUE:
6482 case FUTEX_CMP_REQUEUE:
6483 case FUTEX_WAKE_OP:
6484 /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the
6485 TIMEOUT parameter is interpreted as a uint32_t by the kernel.
6486 But the prototype takes a `struct timespec *'; insert casts
6487 to satisfy the compiler. We do not need to tswap TIMEOUT
6488 since it's not compared to guest memory. */
6489 pts = (struct timespec *)(uintptr_t) timeout;
6490 return get_errno(safe_futex(g2h(uaddr), op, val, pts,
6491 g2h(uaddr2),
6492 (base_op == FUTEX_CMP_REQUEUE
6493 ? tswap32(val3)
6494 : val3)));
6495 default:
6496 return -TARGET_ENOSYS;
6497 }
6498 }
6499 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
6500 static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
6501 abi_long handle, abi_long mount_id,
6502 abi_long flags)
6503 {
6504 struct file_handle *target_fh;
6505 struct file_handle *fh;
6506 int mid = 0;
6507 abi_long ret;
6508 char *name;
6509 unsigned int size, total_size;
6510
6511 if (get_user_s32(size, handle)) {
6512 return -TARGET_EFAULT;
6513 }
6514
6515 name = lock_user_string(pathname);
6516 if (!name) {
6517 return -TARGET_EFAULT;
6518 }
6519
6520 total_size = sizeof(struct file_handle) + size;
6521 target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
6522 if (!target_fh) {
6523 unlock_user(name, pathname, 0);
6524 return -TARGET_EFAULT;
6525 }
6526
6527 fh = g_malloc0(total_size);
6528 fh->handle_bytes = size;
6529
6530 ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
6531 unlock_user(name, pathname, 0);
6532
6533 /* man name_to_handle_at(2):
6534 * Other than the use of the handle_bytes field, the caller should treat
6535 * the file_handle structure as an opaque data type
6536 */
6537
6538 memcpy(target_fh, fh, total_size);
6539 target_fh->handle_bytes = tswap32(fh->handle_bytes);
6540 target_fh->handle_type = tswap32(fh->handle_type);
6541 g_free(fh);
6542 unlock_user(target_fh, handle, total_size);
6543
6544 if (put_user_s32(mid, mount_id)) {
6545 return -TARGET_EFAULT;
6546 }
6547
6548 return ret;
6549
6550 }
6551 #endif
6552
6553 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
6554 static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
6555 abi_long flags)
6556 {
6557 struct file_handle *target_fh;
6558 struct file_handle *fh;
6559 unsigned int size, total_size;
6560 abi_long ret;
6561
6562 if (get_user_s32(size, handle)) {
6563 return -TARGET_EFAULT;
6564 }
6565
6566 total_size = sizeof(struct file_handle) + size;
6567 target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
6568 if (!target_fh) {
6569 return -TARGET_EFAULT;
6570 }
6571
6572 fh = g_memdup(target_fh, total_size);
6573 fh->handle_bytes = size;
6574 fh->handle_type = tswap32(target_fh->handle_type);
6575
6576 ret = get_errno(open_by_handle_at(mount_fd, fh,
6577 target_to_host_bitmask(flags, fcntl_flags_tbl)));
6578
6579 g_free(fh);
6580
6581 unlock_user(target_fh, handle, total_size);
6582
6583 return ret;
6584 }
6585 #endif
6586
6587 #if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
6588
6589 static abi_long do_signalfd4(int fd, abi_long mask, int flags)
6590 {
6591 int host_flags;
6592 target_sigset_t *target_mask;
6593 sigset_t host_mask;
6594 abi_long ret;
6595
6596 if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
6597 return -TARGET_EINVAL;
6598 }
6599 if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
6600 return -TARGET_EFAULT;
6601 }
6602
6603 target_to_host_sigset(&host_mask, target_mask);
6604
6605 host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
6606
6607 ret = get_errno(signalfd(fd, &host_mask, host_flags));
6608 if (ret >= 0) {
6609 fd_trans_register(ret, &target_signalfd_trans);
6610 }
6611
6612 unlock_user_struct(target_mask, mask, 0);
6613
6614 return ret;
6615 }
6616 #endif
6617
6618 /* Map host to target signal numbers for the wait family of syscalls.
6619 Assume all other status bits are the same. */
6620 int host_to_target_waitstatus(int status)
6621 {
6622 if (WIFSIGNALED(status)) {
6623 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
6624 }
6625 if (WIFSTOPPED(status)) {
6626 return (host_to_target_signal(WSTOPSIG(status)) << 8)
6627 | (status & 0xff);
6628 }
6629 return status;
6630 }
6631
6632 static int open_self_cmdline(void *cpu_env, int fd)
6633 {
6634 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
6635 struct linux_binprm *bprm = ((TaskState *)cpu->opaque)->bprm;
6636 int i;
6637
6638 for (i = 0; i < bprm->argc; i++) {
6639 size_t len = strlen(bprm->argv[i]) + 1;
6640
6641 if (write(fd, bprm->argv[i], len) != len) {
6642 return -1;
6643 }
6644 }
6645
6646 return 0;
6647 }
6648
6649 static int open_self_maps(void *cpu_env, int fd)
6650 {
6651 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
6652 TaskState *ts = cpu->opaque;
6653 FILE *fp;
6654 char *line = NULL;
6655 size_t len = 0;
6656 ssize_t read;
6657
6658 fp = fopen("/proc/self/maps", "r");
6659 if (fp == NULL) {
6660 return -1;
6661 }
6662
6663 while ((read = getline(&line, &len, fp)) != -1) {
6664 int fields, dev_maj, dev_min, inode;
6665 uint64_t min, max, offset;
6666 char flag_r, flag_w, flag_x, flag_p;
6667 char path[512] = "";
6668 fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d"
6669 " %512s", &min, &max, &flag_r, &flag_w, &flag_x,
6670 &flag_p, &offset, &dev_maj, &dev_min, &inode, path);
6671
6672 if ((fields < 10) || (fields > 11)) {
6673 continue;
6674 }
6675 if (h2g_valid(min)) {
6676 int flags = page_get_flags(h2g(min));
6677 max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX) + 1;
6678 if (page_check_range(h2g(min), max - min, flags) == -1) {
6679 continue;
6680 }
6681 if (h2g(min) == ts->info->stack_limit) {
6682 pstrcpy(path, sizeof(path), " [stack]");
6683 }
6684 dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
6685 " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n",
6686 h2g(min), h2g(max - 1) + 1, flag_r, flag_w,
6687 flag_x, flag_p, offset, dev_maj, dev_min, inode,
6688 path[0] ? " " : "", path);
6689 }
6690 }
6691
6692 free(line);
6693 fclose(fp);
6694
6695 return 0;
6696 }
6697
6698 static int open_self_stat(void *cpu_env, int fd)
6699 {
6700 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
6701 TaskState *ts = cpu->opaque;
6702 abi_ulong start_stack = ts->info->start_stack;
6703 int i;
6704
6705 for (i = 0; i < 44; i++) {
6706 char buf[128];
6707 int len;
6708 uint64_t val = 0;
6709
6710 if (i == 0) {
6711 /* pid */
6712 val = getpid();
6713 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
6714 } else if (i == 1) {
6715 /* app name */
6716 snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]);
6717 } else if (i == 27) {
6718 /* stack bottom */
6719 val = start_stack;
6720 snprintf(buf, sizeof(buf), "%"PRId64 " ", val);
6721 } else {
6722 /* for the rest, there is MasterCard */
6723 snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' ');
6724 }
6725
6726 len = strlen(buf);
6727 if (write(fd, buf, len) != len) {
6728 return -1;
6729 }
6730 }
6731
6732 return 0;
6733 }
6734
6735 static int open_self_auxv(void *cpu_env, int fd)
6736 {
6737 CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
6738 TaskState *ts = cpu->opaque;
6739 abi_ulong auxv = ts->info->saved_auxv;
6740 abi_ulong len = ts->info->auxv_len;
6741 char *ptr;
6742
6743 /*
6744 * Auxiliary vector is stored in target process stack.
6745 * read in whole auxv vector and copy it to file
6746 */
6747 ptr = lock_user(VERIFY_READ, auxv, len, 0);
6748 if (ptr != NULL) {
6749 while (len > 0) {
6750 ssize_t r;
6751 r = write(fd, ptr, len);
6752 if (r <= 0) {
6753 break;
6754 }
6755 len -= r;
6756 ptr += r;
6757 }
6758 lseek(fd, 0, SEEK_SET);
6759 unlock_user(ptr, auxv, len);
6760 }
6761
6762 return 0;
6763 }
6764
6765 static int is_proc_myself(const char *filename, const char *entry)
6766 {
6767 if (!strncmp(filename, "/proc/", strlen("/proc/"))) {
6768 filename += strlen("/proc/");
6769 if (!strncmp(filename, "self/", strlen("self/"))) {
6770 filename += strlen("self/");
6771 } else if (*filename >= '1' && *filename <= '9') {
6772 char myself[80];
6773 snprintf(myself, sizeof(myself), "%d/", getpid());
6774 if (!strncmp(filename, myself, strlen(myself))) {
6775 filename += strlen(myself);
6776 } else {
6777 return 0;
6778 }
6779 } else {
6780 return 0;
6781 }
6782 if (!strcmp(filename, entry)) {
6783 return 1;
6784 }
6785 }
6786 return 0;
6787 }
6788
6789 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
6790 static int is_proc(const char *filename, const char *entry)
6791 {
6792 return strcmp(filename, entry) == 0;
6793 }
6794
6795 static int open_net_route(void *cpu_env, int fd)
6796 {
6797 FILE *fp;
6798 char *line = NULL;
6799 size_t len = 0;
6800 ssize_t read;
6801
6802 fp = fopen("/proc/net/route", "r");
6803 if (fp == NULL) {
6804 return -1;
6805 }
6806
6807 /* read header */
6808
6809 read = getline(&line, &len, fp);
6810 dprintf(fd, "%s", line);
6811
6812 /* read routes */
6813
6814 while ((read = getline(&line, &len, fp)) != -1) {
6815 char iface[16];
6816 uint32_t dest, gw, mask;
6817 unsigned int flags, refcnt, use, metric, mtu, window, irtt;
6818 int fields;
6819
6820 fields = sscanf(line,
6821 "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
6822 iface, &dest, &gw, &flags, &refcnt, &use, &metric,
6823 &mask, &mtu, &window, &irtt);
6824 if (fields != 11) {
6825 continue;
6826 }
6827 dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n",
6828 iface, tswap32(dest), tswap32(gw), flags, refcnt, use,
6829 metric, tswap32(mask), mtu, window, irtt);
6830 }
6831
6832 free(line);
6833 fclose(fp);
6834
6835 return 0;
6836 }
6837 #endif
6838
6839 static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode)
6840 {
6841 struct fake_open {
6842 const char *filename;
6843 int (*fill)(void *cpu_env, int fd);
6844 int (*cmp)(const char *s1, const char *s2);
6845 };
6846 const struct fake_open *fake_open;
6847 static const struct fake_open fakes[] = {
6848 { "maps", open_self_maps, is_proc_myself },
6849 { "stat", open_self_stat, is_proc_myself },
6850 { "auxv", open_self_auxv, is_proc_myself },
6851 { "cmdline", open_self_cmdline, is_proc_myself },
6852 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
6853 { "/proc/net/route", open_net_route, is_proc },
6854 #endif
6855 { NULL, NULL, NULL }
6856 };
6857
6858 if (is_proc_myself(pathname, "exe")) {
6859 int execfd = qemu_getauxval(AT_EXECFD);
6860 return execfd ? execfd : safe_openat(dirfd, exec_path, flags, mode);
6861 }
6862
6863 for (fake_open = fakes; fake_open->filename; fake_open++) {
6864 if (fake_open->cmp(pathname, fake_open->filename)) {
6865 break;
6866 }
6867 }
6868
6869 if (fake_open->filename) {
6870 const char *tmpdir;
6871 char filename[PATH_MAX];
6872 int fd, r;
6873
6874 /* create temporary file to map stat to */
6875 tmpdir = getenv("TMPDIR");
6876 if (!tmpdir)
6877 tmpdir = "/tmp";
6878 snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir);
6879 fd = mkstemp(filename);
6880 if (fd < 0) {
6881 return fd;
6882 }
6883 unlink(filename);
6884
6885 if ((r = fake_open->fill(cpu_env, fd))) {
6886 int e = errno;
6887 close(fd);
6888 errno = e;
6889 return r;
6890 }
6891 lseek(fd, 0, SEEK_SET);
6892
6893 return fd;
6894 }
6895
6896 return safe_openat(dirfd, path(pathname), flags, mode);
6897 }
6898
6899 #define TIMER_MAGIC 0x0caf0000
6900 #define TIMER_MAGIC_MASK 0xffff0000
6901
6902 /* Convert QEMU provided timer ID back to internal 16bit index format */
6903 static target_timer_t get_timer_id(abi_long arg)
6904 {
6905 target_timer_t timerid = arg;
6906
6907 if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) {
6908 return -TARGET_EINVAL;
6909 }
6910
6911 timerid &= 0xffff;
6912
6913 if (timerid >= ARRAY_SIZE(g_posix_timers)) {
6914 return -TARGET_EINVAL;
6915 }
6916
6917 return timerid;
6918 }
6919
6920 static int target_to_host_cpu_mask(unsigned long *host_mask,
6921 size_t host_size,
6922 abi_ulong target_addr,
6923 size_t target_size)
6924 {
6925 unsigned target_bits = sizeof(abi_ulong) * 8;
6926 unsigned host_bits = sizeof(*host_mask) * 8;
6927 abi_ulong *target_mask;
6928 unsigned i, j;
6929
6930 assert(host_size >= target_size);
6931
6932 target_mask = lock_user(VERIFY_READ, target_addr, target_size, 1);
6933 if (!target_mask) {
6934 return -TARGET_EFAULT;
6935 }
6936 memset(host_mask, 0, host_size);
6937
6938 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
6939 unsigned bit = i * target_bits;
6940 abi_ulong val;
6941
6942 __get_user(val, &target_mask[i]);
6943 for (j = 0; j < target_bits; j++, bit++) {
6944 if (val & (1UL << j)) {
6945 host_mask[bit / host_bits] |= 1UL << (bit % host_bits);
6946 }
6947 }
6948 }
6949
6950 unlock_user(target_mask, target_addr, 0);
6951 return 0;
6952 }
6953
6954 static int host_to_target_cpu_mask(const unsigned long *host_mask,
6955 size_t host_size,
6956 abi_ulong target_addr,
6957 size_t target_size)
6958 {
6959 unsigned target_bits = sizeof(abi_ulong) * 8;
6960 unsigned host_bits = sizeof(*host_mask) * 8;
6961 abi_ulong *target_mask;
6962 unsigned i, j;
6963
6964 assert(host_size >= target_size);
6965
6966 target_mask = lock_user(VERIFY_WRITE, target_addr, target_size, 0);
6967 if (!target_mask) {
6968 return -TARGET_EFAULT;
6969 }
6970
6971 for (i = 0 ; i < target_size / sizeof(abi_ulong); i++) {
6972 unsigned bit = i * target_bits;
6973 abi_ulong val = 0;
6974
6975 for (j = 0; j < target_bits; j++, bit++) {
6976 if (host_mask[bit / host_bits] & (1UL << (bit % host_bits))) {
6977 val |= 1UL << j;
6978 }
6979 }
6980 __put_user(val, &target_mask[i]);
6981 }
6982
6983 unlock_user(target_mask, target_addr, target_size);
6984 return 0;
6985 }
6986
6987 /* This is an internal helper for do_syscall so that it is easier
6988 * to have a single return point, so that actions, such as logging
6989 * of syscall results, can be performed.
6990 * All errnos that do_syscall() returns must be -TARGET_<errcode>.
6991 */
6992 static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
6993 abi_long arg2, abi_long arg3, abi_long arg4,
6994 abi_long arg5, abi_long arg6, abi_long arg7,
6995 abi_long arg8)
6996 {
6997 CPUState *cpu = ENV_GET_CPU(cpu_env);
6998 abi_long ret;
6999 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
7000 || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
7001 || defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64)
7002 struct stat st;
7003 #endif
7004 #if defined(TARGET_NR_statfs) || defined(TARGET_NR_statfs64) \
7005 || defined(TARGET_NR_fstatfs)
7006 struct statfs stfs;
7007 #endif
7008 void *p;
7009
7010 switch(num) {
7011 case TARGET_NR_exit:
7012 /* In old applications this may be used to implement _exit(2).
7013 However in threaded applictions it is used for thread termination,
7014 and _exit_group is used for application termination.
7015 Do thread termination if we have more then one thread. */
7016
7017 if (block_signals()) {
7018 return -TARGET_ERESTARTSYS;
7019 }
7020
7021 cpu_list_lock();
7022
7023 if (CPU_NEXT(first_cpu)) {
7024 TaskState *ts;
7025
7026 /* Remove the CPU from the list. */
7027 QTAILQ_REMOVE_RCU(&cpus, cpu, node);
7028
7029 cpu_list_unlock();
7030
7031 ts = cpu->opaque;
7032 if (ts->child_tidptr) {
7033 put_user_u32(0, ts->child_tidptr);
7034 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
7035 NULL, NULL, 0);
7036 }
7037 thread_cpu = NULL;
7038 object_unref(OBJECT(cpu));
7039 g_free(ts);
7040 rcu_unregister_thread();
7041 pthread_exit(NULL);
7042 }
7043
7044 cpu_list_unlock();
7045 preexit_cleanup(cpu_env, arg1);
7046 _exit(arg1);
7047 return 0; /* avoid warning */
7048 case TARGET_NR_read:
7049 if (arg2 == 0 && arg3 == 0) {
7050 return get_errno(safe_read(arg1, 0, 0));
7051 } else {
7052 if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
7053 return -TARGET_EFAULT;
7054 ret = get_errno(safe_read(arg1, p, arg3));
7055 if (ret >= 0 &&
7056 fd_trans_host_to_target_data(arg1)) {
7057 ret = fd_trans_host_to_target_data(arg1)(p, ret);
7058 }
7059 unlock_user(p, arg2, ret);
7060 }
7061 return ret;
7062 case TARGET_NR_write:
7063 if (arg2 == 0 && arg3 == 0) {
7064 return get_errno(safe_write(arg1, 0, 0));
7065 }
7066 if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
7067 return -TARGET_EFAULT;
7068 if (fd_trans_target_to_host_data(arg1)) {
7069 void *copy = g_malloc(arg3);
7070 memcpy(copy, p, arg3);
7071 ret = fd_trans_target_to_host_data(arg1)(copy, arg3);
7072 if (ret >= 0) {
7073 ret = get_errno(safe_write(arg1, copy, ret));
7074 }
7075 g_free(copy);
7076 } else {
7077 ret = get_errno(safe_write(arg1, p, arg3));
7078 }
7079 unlock_user(p, arg2, 0);
7080 return ret;
7081
7082 #ifdef TARGET_NR_open
7083 case TARGET_NR_open:
7084 if (!(p = lock_user_string(arg1)))
7085 return -TARGET_EFAULT;
7086 ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
7087 target_to_host_bitmask(arg2, fcntl_flags_tbl),
7088 arg3));
7089 fd_trans_unregister(ret);
7090 unlock_user(p, arg1, 0);
7091 return ret;
7092 #endif
7093 case TARGET_NR_openat:
7094 if (!(p = lock_user_string(arg2)))
7095 return -TARGET_EFAULT;
7096 ret = get_errno(do_openat(cpu_env, arg1, p,
7097 target_to_host_bitmask(arg3, fcntl_flags_tbl),
7098 arg4));
7099 fd_trans_unregister(ret);
7100 unlock_user(p, arg2, 0);
7101 return ret;
7102 #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7103 case TARGET_NR_name_to_handle_at:
7104 ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
7105 return ret;
7106 #endif
7107 #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
7108 case TARGET_NR_open_by_handle_at:
7109 ret = do_open_by_handle_at(arg1, arg2, arg3);
7110 fd_trans_unregister(ret);
7111 return ret;
7112 #endif
7113 case TARGET_NR_close:
7114 fd_trans_unregister(arg1);
7115 return get_errno(close(arg1));
7116
7117 case TARGET_NR_brk:
7118 return do_brk(arg1);
7119 #ifdef TARGET_NR_fork
7120 case TARGET_NR_fork:
7121 return get_errno(do_fork(cpu_env, TARGET_SIGCHLD, 0, 0, 0, 0));
7122 #endif
7123 #ifdef TARGET_NR_waitpid
7124 case TARGET_NR_waitpid:
7125 {
7126 int status;
7127 ret = get_errno(safe_wait4(arg1, &status, arg3, 0));
7128 if (!is_error(ret) && arg2 && ret
7129 && put_user_s32(host_to_target_waitstatus(status), arg2))
7130 return -TARGET_EFAULT;
7131 }
7132 return ret;
7133 #endif
7134 #ifdef TARGET_NR_waitid
7135 case TARGET_NR_waitid:
7136 {
7137 siginfo_t info;
7138 info.si_pid = 0;
7139 ret = get_errno(safe_waitid(arg1, arg2, &info, arg4, NULL));
7140 if (!is_error(ret) && arg3 && info.si_pid != 0) {
7141 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0)))
7142 return -TARGET_EFAULT;
7143 host_to_target_siginfo(p, &info);
7144 unlock_user(p, arg3, sizeof(target_siginfo_t));
7145 }
7146 }
7147 return ret;
7148 #endif
7149 #ifdef TARGET_NR_creat /* not on alpha */
7150 case TARGET_NR_creat:
7151 if (!(p = lock_user_string(arg1)))
7152 return -TARGET_EFAULT;
7153 ret = get_errno(creat(p, arg2));
7154 fd_trans_unregister(ret);
7155 unlock_user(p, arg1, 0);
7156 return ret;
7157 #endif
7158 #ifdef TARGET_NR_link
7159 case TARGET_NR_link:
7160 {
7161 void * p2;
7162 p = lock_user_string(arg1);
7163 p2 = lock_user_string(arg2);
7164 if (!p || !p2)
7165 ret = -TARGET_EFAULT;
7166 else
7167 ret = get_errno(link(p, p2));
7168 unlock_user(p2, arg2, 0);
7169 unlock_user(p, arg1, 0);
7170 }
7171 return ret;
7172 #endif
7173 #if defined(TARGET_NR_linkat)
7174 case TARGET_NR_linkat:
7175 {
7176 void * p2 = NULL;
7177 if (!arg2 || !arg4)
7178 return -TARGET_EFAULT;
7179 p = lock_user_string(arg2);
7180 p2 = lock_user_string(arg4);
7181 if (!p || !p2)
7182 ret = -TARGET_EFAULT;
7183 else
7184 ret = get_errno(linkat(arg1, p, arg3, p2, arg5));
7185 unlock_user(p, arg2, 0);
7186 unlock_user(p2, arg4, 0);
7187 }
7188 return ret;
7189 #endif
7190 #ifdef TARGET_NR_unlink
7191 case TARGET_NR_unlink:
7192 if (!(p = lock_user_string(arg1)))
7193 return -TARGET_EFAULT;
7194 ret = get_errno(unlink(p));
7195 unlock_user(p, arg1, 0);
7196 return ret;
7197 #endif
7198 #if defined(TARGET_NR_unlinkat)
7199 case TARGET_NR_unlinkat:
7200 if (!(p = lock_user_string(arg2)))
7201 return -TARGET_EFAULT;
7202 ret = get_errno(unlinkat(arg1, p, arg3));
7203 unlock_user(p, arg2, 0);
7204 return ret;
7205 #endif
7206 case TARGET_NR_execve:
7207 {
7208 char **argp, **envp;
7209 int argc, envc;
7210 abi_ulong gp;
7211 abi_ulong guest_argp;
7212 abi_ulong guest_envp;
7213 abi_ulong addr;
7214 char **q;
7215 int total_size = 0;
7216
7217 argc = 0;
7218 guest_argp = arg2;
7219 for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) {
7220 if (get_user_ual(addr, gp))
7221 return -TARGET_EFAULT;
7222 if (!addr)
7223 break;
7224 argc++;
7225 }
7226 envc = 0;
7227 guest_envp = arg3;
7228 for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) {
7229 if (get_user_ual(addr, gp))
7230 return -TARGET_EFAULT;
7231 if (!addr)
7232 break;
7233 envc++;
7234 }
7235
7236 argp = g_new0(char *, argc + 1);
7237 envp = g_new0(char *, envc + 1);
7238
7239 for (gp = guest_argp, q = argp; gp;
7240 gp += sizeof(abi_ulong), q++) {
7241 if (get_user_ual(addr, gp))
7242 goto execve_efault;
7243 if (!addr)
7244 break;
7245 if (!(*q = lock_user_string(addr)))
7246 goto execve_efault;
7247 total_size += strlen(*q) + 1;
7248 }
7249 *q = NULL;
7250
7251 for (gp = guest_envp, q = envp; gp;
7252 gp += sizeof(abi_ulong), q++) {
7253 if (get_user_ual(addr, gp))
7254 goto execve_efault;
7255 if (!addr)
7256 break;
7257 if (!(*q = lock_user_string(addr)))
7258 goto execve_efault;
7259 total_size += strlen(*q) + 1;
7260 }
7261 *q = NULL;
7262
7263 if (!(p = lock_user_string(arg1)))
7264 goto execve_efault;
7265 /* Although execve() is not an interruptible syscall it is
7266 * a special case where we must use the safe_syscall wrapper:
7267 * if we allow a signal to happen before we make the host
7268 * syscall then we will 'lose' it, because at the point of
7269 * execve the process leaves QEMU's control. So we use the
7270 * safe syscall wrapper to ensure that we either take the
7271 * signal as a guest signal, or else it does not happen
7272 * before the execve completes and makes it the other
7273 * program's problem.
7274 */
7275 ret = get_errno(safe_execve(p, argp, envp));
7276 unlock_user(p, arg1, 0);
7277
7278 goto execve_end;
7279
7280 execve_efault:
7281 ret = -TARGET_EFAULT;
7282
7283 execve_end:
7284 for (gp = guest_argp, q = argp; *q;
7285 gp += sizeof(abi_ulong), q++) {
7286 if (get_user_ual(addr, gp)
7287 || !addr)
7288 break;
7289 unlock_user(*q, addr, 0);
7290 }
7291 for (gp = guest_envp, q = envp; *q;
7292 gp += sizeof(abi_ulong), q++) {
7293 if (get_user_ual(addr, gp)
7294 || !addr)
7295 break;
7296 unlock_user(*q, addr, 0);
7297 }
7298
7299 g_free(argp);
7300 g_free(envp);
7301 }
7302 return ret;
7303 case TARGET_NR_chdir:
7304 if (!(p = lock_user_string(arg1)))
7305 return -TARGET_EFAULT;
7306 ret = get_errno(chdir(p));
7307 unlock_user(p, arg1, 0);
7308 return ret;
7309 #ifdef TARGET_NR_time
7310 case TARGET_NR_time:
7311 {
7312 time_t host_time;
7313 ret = get_errno(time(&host_time));
7314 if (!is_error(ret)
7315 && arg1
7316 && put_user_sal(host_time, arg1))
7317 return -TARGET_EFAULT;
7318 }
7319 return ret;
7320 #endif
7321 #ifdef TARGET_NR_mknod
7322 case TARGET_NR_mknod:
7323 if (!(p = lock_user_string(arg1)))
7324 return -TARGET_EFAULT;
7325 ret = get_errno(mknod(p, arg2, arg3));
7326 unlock_user(p, arg1, 0);
7327 return ret;
7328 #endif
7329 #if defined(TARGET_NR_mknodat)
7330 case TARGET_NR_mknodat:
7331 if (!(p = lock_user_string(arg2)))
7332 return -TARGET_EFAULT;
7333 ret = get_errno(mknodat(arg1, p, arg3, arg4));
7334 unlock_user(p, arg2, 0);
7335 return ret;
7336 #endif
7337 #ifdef TARGET_NR_chmod
7338 case TARGET_NR_chmod:
7339 if (!(p = lock_user_string(arg1)))
7340 return -TARGET_EFAULT;
7341 ret = get_errno(chmod(p, arg2));
7342 unlock_user(p, arg1, 0);
7343 return ret;
7344 #endif
7345 #ifdef TARGET_NR_lseek
7346 case TARGET_NR_lseek:
7347 return get_errno(lseek(arg1, arg2, arg3));
7348 #endif
7349 #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA)
7350 /* Alpha specific */
7351 case TARGET_NR_getxpid:
7352 ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid();
7353 return get_errno(getpid());
7354 #endif
7355 #ifdef TARGET_NR_getpid
7356 case TARGET_NR_getpid:
7357 return get_errno(getpid());
7358 #endif
7359 case TARGET_NR_mount:
7360 {
7361 /* need to look at the data field */
7362 void *p2, *p3;
7363
7364 if (arg1) {
7365 p = lock_user_string(arg1);
7366 if (!p) {
7367 return -TARGET_EFAULT;
7368 }
7369 } else {
7370 p = NULL;
7371 }
7372
7373 p2 = lock_user_string(arg2);
7374 if (!p2) {
7375 if (arg1) {
7376 unlock_user(p, arg1, 0);
7377 }
7378 return -TARGET_EFAULT;
7379 }
7380
7381 if (arg3) {
7382 p3 = lock_user_string(arg3);
7383 if (!p3) {
7384 if (arg1) {
7385 unlock_user(p, arg1, 0);
7386 }
7387 unlock_user(p2, arg2, 0);
7388 return -TARGET_EFAULT;
7389 }
7390 } else {
7391 p3 = NULL;
7392 }
7393
7394 /* FIXME - arg5 should be locked, but it isn't clear how to
7395 * do that since it's not guaranteed to be a NULL-terminated
7396 * string.
7397 */
7398 if (!arg5) {
7399 ret = mount(p, p2, p3, (unsigned long)arg4, NULL);
7400 } else {
7401 ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5));
7402 }
7403 ret = get_errno(ret);
7404
7405 if (arg1) {
7406 unlock_user(p, arg1, 0);
7407 }
7408 unlock_user(p2, arg2, 0);
7409 if (arg3) {
7410 unlock_user(p3, arg3, 0);
7411 }
7412 }
7413 return ret;
7414 #ifdef TARGET_NR_umount
7415 case TARGET_NR_umount:
7416 if (!(p = lock_user_string(arg1)))
7417 return -TARGET_EFAULT;
7418 ret = get_errno(umount(p));
7419 unlock_user(p, arg1, 0);
7420 return ret;
7421 #endif
7422 #ifdef TARGET_NR_stime /* not on alpha */
7423 case TARGET_NR_stime:
7424 {
7425 time_t host_time;
7426 if (get_user_sal(host_time, arg1))
7427 return -TARGET_EFAULT;
7428 return get_errno(stime(&host_time));
7429 }
7430 #endif
7431 #ifdef TARGET_NR_alarm /* not on alpha */
7432 case TARGET_NR_alarm:
7433 return alarm(arg1);
7434 #endif
7435 #ifdef TARGET_NR_pause /* not on alpha */
7436 case TARGET_NR_pause:
7437 if (!block_signals()) {
7438 sigsuspend(&((TaskState *)cpu->opaque)->signal_mask);
7439 }
7440 return -TARGET_EINTR;
7441 #endif
7442 #ifdef TARGET_NR_utime
7443 case TARGET_NR_utime:
7444 {
7445 struct utimbuf tbuf, *host_tbuf;
7446 struct target_utimbuf *target_tbuf;
7447 if (arg2) {
7448 if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1))
7449 return -TARGET_EFAULT;
7450 tbuf.actime = tswapal(target_tbuf->actime);
7451 tbuf.modtime = tswapal(target_tbuf->modtime);
7452 unlock_user_struct(target_tbuf, arg2, 0);
7453 host_tbuf = &tbuf;
7454 } else {
7455 host_tbuf = NULL;
7456 }
7457 if (!(p = lock_user_string(arg1)))
7458 return -TARGET_EFAULT;
7459 ret = get_errno(utime(p, host_tbuf));
7460 unlock_user(p, arg1, 0);
7461 }
7462 return ret;
7463 #endif
7464 #ifdef TARGET_NR_utimes
7465 case TARGET_NR_utimes:
7466 {
7467 struct timeval *tvp, tv[2];
7468 if (arg2) {
7469 if (copy_from_user_timeval(&tv[0], arg2)
7470 || copy_from_user_timeval(&tv[1],
7471 arg2 + sizeof(struct target_timeval)))
7472 return -TARGET_EFAULT;
7473 tvp = tv;
7474 } else {
7475 tvp = NULL;
7476 }
7477 if (!(p = lock_user_string(arg1)))
7478 return -TARGET_EFAULT;
7479 ret = get_errno(utimes(p, tvp));
7480 unlock_user(p, arg1, 0);
7481 }
7482 return ret;
7483 #endif
7484 #if defined(TARGET_NR_futimesat)
7485 case TARGET_NR_futimesat:
7486 {
7487 struct timeval *tvp, tv[2];
7488 if (arg3) {
7489 if (copy_from_user_timeval(&tv[0], arg3)
7490 || copy_from_user_timeval(&tv[1],
7491 arg3 + sizeof(struct target_timeval)))
7492 return -TARGET_EFAULT;
7493 tvp = tv;
7494 } else {
7495 tvp = NULL;
7496 }
7497 if (!(p = lock_user_string(arg2))) {
7498 return -TARGET_EFAULT;
7499 }
7500 ret = get_errno(futimesat(arg1, path(p), tvp));
7501 unlock_user(p, arg2, 0);
7502 }
7503 return ret;
7504 #endif
7505 #ifdef TARGET_NR_access
7506 case TARGET_NR_access:
7507 if (!(p = lock_user_string(arg1))) {
7508 return -TARGET_EFAULT;
7509 }
7510 ret = get_errno(access(path(p), arg2));
7511 unlock_user(p, arg1, 0);
7512 return ret;
7513 #endif
7514 #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
7515 case TARGET_NR_faccessat:
7516 if (!(p = lock_user_string(arg2))) {
7517 return -TARGET_EFAULT;
7518 }
7519 ret = get_errno(faccessat(arg1, p, arg3, 0));
7520 unlock_user(p, arg2, 0);
7521 return ret;
7522 #endif
7523 #ifdef TARGET_NR_nice /* not on alpha */
7524 case TARGET_NR_nice:
7525 return get_errno(nice(arg1));
7526 #endif
7527 case TARGET_NR_sync:
7528 sync();
7529 return 0;
7530 #if defined(TARGET_NR_syncfs) && defined(CONFIG_SYNCFS)
7531 case TARGET_NR_syncfs:
7532 return get_errno(syncfs(arg1));
7533 #endif
7534 case TARGET_NR_kill:
7535 return get_errno(safe_kill(arg1, target_to_host_signal(arg2)));
7536 #ifdef TARGET_NR_rename
7537 case TARGET_NR_rename:
7538 {
7539 void *p2;
7540 p = lock_user_string(arg1);
7541 p2 = lock_user_string(arg2);
7542 if (!p || !p2)
7543 ret = -TARGET_EFAULT;
7544 else
7545 ret = get_errno(rename(p, p2));
7546 unlock_user(p2, arg2, 0);
7547 unlock_user(p, arg1, 0);
7548 }
7549 return ret;
7550 #endif
7551 #if defined(TARGET_NR_renameat)
7552 case TARGET_NR_renameat:
7553 {
7554 void *p2;
7555 p = lock_user_string(arg2);
7556 p2 = lock_user_string(arg4);
7557 if (!p || !p2)
7558 ret = -TARGET_EFAULT;
7559 else
7560 ret = get_errno(renameat(arg1, p, arg3, p2));
7561 unlock_user(p2, arg4, 0);
7562 unlock_user(p, arg2, 0);
7563 }
7564 return ret;
7565 #endif
7566 #if defined(TARGET_NR_renameat2)
7567 case TARGET_NR_renameat2:
7568 {
7569 void *p2;
7570 p = lock_user_string(arg2);
7571 p2 = lock_user_string(arg4);
7572 if (!p || !p2) {
7573 ret = -TARGET_EFAULT;
7574 } else {
7575 ret = get_errno(sys_renameat2(arg1, p, arg3, p2, arg5));
7576 }
7577 unlock_user(p2, arg4, 0);
7578 unlock_user(p, arg2, 0);
7579 }
7580 return ret;
7581 #endif
7582 #ifdef TARGET_NR_mkdir
7583 case TARGET_NR_mkdir:
7584 if (!(p = lock_user_string(arg1)))
7585 return -TARGET_EFAULT;
7586 ret = get_errno(mkdir(p, arg2));
7587 unlock_user(p, arg1, 0);
7588 return ret;
7589 #endif
7590 #if defined(TARGET_NR_mkdirat)
7591 case TARGET_NR_mkdirat:
7592 if (!(p = lock_user_string(arg2)))
7593 return -TARGET_EFAULT;
7594 ret = get_errno(mkdirat(arg1, p, arg3));
7595 unlock_user(p, arg2, 0);
7596 return ret;
7597 #endif
7598 #ifdef TARGET_NR_rmdir
7599 case TARGET_NR_rmdir:
7600 if (!(p = lock_user_string(arg1)))
7601 return -TARGET_EFAULT;
7602 ret = get_errno(rmdir(p));
7603 unlock_user(p, arg1, 0);
7604 return ret;
7605 #endif
7606 case TARGET_NR_dup:
7607 ret = get_errno(dup(arg1));
7608 if (ret >= 0) {
7609 fd_trans_dup(arg1, ret);
7610 }
7611 return ret;
7612 #ifdef TARGET_NR_pipe
7613 case TARGET_NR_pipe:
7614 return do_pipe(cpu_env, arg1, 0, 0);
7615 #endif
7616 #ifdef TARGET_NR_pipe2
7617 case TARGET_NR_pipe2:
7618 return do_pipe(cpu_env, arg1,
7619 target_to_host_bitmask(arg2, fcntl_flags_tbl), 1);
7620 #endif
7621 case TARGET_NR_times:
7622 {
7623 struct target_tms *tmsp;
7624 struct tms tms;
7625 ret = get_errno(times(&tms));
7626 if (arg1) {
7627 tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0);
7628 if (!tmsp)
7629 return -TARGET_EFAULT;
7630 tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime));
7631 tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime));
7632 tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime));
7633 tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime));
7634 }
7635 if (!is_error(ret))
7636 ret = host_to_target_clock_t(ret);
7637 }
7638 return ret;
7639 case TARGET_NR_acct:
7640 if (arg1 == 0) {
7641 ret = get_errno(acct(NULL));
7642 } else {
7643 if (!(p = lock_user_string(arg1))) {
7644 return -TARGET_EFAULT;
7645 }
7646 ret = get_errno(acct(path(p)));
7647 unlock_user(p, arg1, 0);
7648 }
7649 return ret;
7650 #ifdef TARGET_NR_umount2
7651 case TARGET_NR_umount2:
7652 if (!(p = lock_user_string(arg1)))
7653 return -TARGET_EFAULT;
7654 ret = get_errno(umount2(p, arg2));
7655 unlock_user(p, arg1, 0);
7656 return ret;
7657 #endif
7658 case TARGET_NR_ioctl:
7659 return do_ioctl(arg1, arg2, arg3);
7660 #ifdef TARGET_NR_fcntl
7661 case TARGET_NR_fcntl:
7662 return do_fcntl(arg1, arg2, arg3);
7663 #endif
7664 case TARGET_NR_setpgid:
7665 return get_errno(setpgid(arg1, arg2));
7666 case TARGET_NR_umask:
7667 return get_errno(umask(arg1));
7668 case TARGET_NR_chroot:
7669 if (!(p = lock_user_string(arg1)))
7670 return -TARGET_EFAULT;
7671 ret = get_errno(chroot(p));
7672 unlock_user(p, arg1, 0);
7673 return ret;
7674 #ifdef TARGET_NR_dup2
7675 case TARGET_NR_dup2:
7676 ret = get_errno(dup2(arg1, arg2));
7677 if (ret >= 0) {
7678 fd_trans_dup(arg1, arg2);
7679 }
7680 return ret;
7681 #endif
7682 #if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
7683 case TARGET_NR_dup3:
7684 {
7685 int host_flags;
7686
7687 if ((arg3 & ~TARGET_O_CLOEXEC) != 0) {
7688 return -EINVAL;
7689 }
7690 host_flags = target_to_host_bitmask(arg3, fcntl_flags_tbl);
7691 ret = get_errno(dup3(arg1, arg2, host_flags));
7692 if (ret >= 0) {
7693 fd_trans_dup(arg1, arg2);
7694 }
7695 return ret;
7696 }
7697 #endif
7698 #ifdef TARGET_NR_getppid /* not on alpha */
7699 case TARGET_NR_getppid:
7700 return get_errno(getppid());
7701 #endif
7702 #ifdef TARGET_NR_getpgrp
7703 case TARGET_NR_getpgrp:
7704 return get_errno(getpgrp());
7705 #endif
7706 case TARGET_NR_setsid:
7707 return get_errno(setsid());
7708 #ifdef TARGET_NR_sigaction
7709 case TARGET_NR_sigaction:
7710 {
7711 #if defined(TARGET_ALPHA)
7712 struct target_sigaction act, oact, *pact = 0;
7713 struct target_old_sigaction *old_act;
7714 if (arg2) {
7715 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7716 return -TARGET_EFAULT;
7717 act._sa_handler = old_act->_sa_handler;
7718 target_siginitset(&act.sa_mask, old_act->sa_mask);
7719 act.sa_flags = old_act->sa_flags;
7720 act.sa_restorer = 0;
7721 unlock_user_struct(old_act, arg2, 0);
7722 pact = &act;
7723 }
7724 ret = get_errno(do_sigaction(arg1, pact, &oact));
7725 if (!is_error(ret) && arg3) {
7726 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
7727 return -TARGET_EFAULT;
7728 old_act->_sa_handler = oact._sa_handler;
7729 old_act->sa_mask = oact.sa_mask.sig[0];
7730 old_act->sa_flags = oact.sa_flags;
7731 unlock_user_struct(old_act, arg3, 1);
7732 }
7733 #elif defined(TARGET_MIPS)
7734 struct target_sigaction act, oact, *pact, *old_act;
7735
7736 if (arg2) {
7737 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7738 return -TARGET_EFAULT;
7739 act._sa_handler = old_act->_sa_handler;
7740 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
7741 act.sa_flags = old_act->sa_flags;
7742 unlock_user_struct(old_act, arg2, 0);
7743 pact = &act;
7744 } else {
7745 pact = NULL;
7746 }
7747
7748 ret = get_errno(do_sigaction(arg1, pact, &oact));
7749
7750 if (!is_error(ret) && arg3) {
7751 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
7752 return -TARGET_EFAULT;
7753 old_act->_sa_handler = oact._sa_handler;
7754 old_act->sa_flags = oact.sa_flags;
7755 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
7756 old_act->sa_mask.sig[1] = 0;
7757 old_act->sa_mask.sig[2] = 0;
7758 old_act->sa_mask.sig[3] = 0;
7759 unlock_user_struct(old_act, arg3, 1);
7760 }
7761 #else
7762 struct target_old_sigaction *old_act;
7763 struct target_sigaction act, oact, *pact;
7764 if (arg2) {
7765 if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
7766 return -TARGET_EFAULT;
7767 act._sa_handler = old_act->_sa_handler;
7768 target_siginitset(&act.sa_mask, old_act->sa_mask);
7769 act.sa_flags = old_act->sa_flags;
7770 act.sa_restorer = old_act->sa_restorer;
7771 #ifdef TARGET_ARCH_HAS_KA_RESTORER
7772 act.ka_restorer = 0;
7773 #endif
7774 unlock_user_struct(old_act, arg2, 0);
7775 pact = &act;
7776 } else {
7777 pact = NULL;
7778 }
7779 ret = get_errno(do_sigaction(arg1, pact, &oact));
7780 if (!is_error(ret) && arg3) {
7781 if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
7782 return -TARGET_EFAULT;
7783 old_act->_sa_handler = oact._sa_handler;
7784 old_act->sa_mask = oact.sa_mask.sig[0];
7785 old_act->sa_flags = oact.sa_flags;
7786 old_act->sa_restorer = oact.sa_restorer;
7787 unlock_user_struct(old_act, arg3, 1);
7788 }
7789 #endif
7790 }
7791 return ret;
7792 #endif
7793 case TARGET_NR_rt_sigaction:
7794 {
7795 #if defined(TARGET_ALPHA)
7796 /* For Alpha and SPARC this is a 5 argument syscall, with
7797 * a 'restorer' parameter which must be copied into the
7798 * sa_restorer field of the sigaction struct.
7799 * For Alpha that 'restorer' is arg5; for SPARC it is arg4,
7800 * and arg5 is the sigsetsize.
7801 * Alpha also has a separate rt_sigaction struct that it uses
7802 * here; SPARC uses the usual sigaction struct.
7803 */
7804 struct target_rt_sigaction *rt_act;
7805 struct target_sigaction act, oact, *pact = 0;
7806
7807 if (arg4 != sizeof(target_sigset_t)) {
7808 return -TARGET_EINVAL;
7809 }
7810 if (arg2) {
7811 if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1))
7812 return -TARGET_EFAULT;
7813 act._sa_handler = rt_act->_sa_handler;
7814 act.sa_mask = rt_act->sa_mask;
7815 act.sa_flags = rt_act->sa_flags;
7816 act.sa_restorer = arg5;
7817 unlock_user_struct(rt_act, arg2, 0);
7818 pact = &act;
7819 }
7820 ret = get_errno(do_sigaction(arg1, pact, &oact));
7821 if (!is_error(ret) && arg3) {
7822 if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0))
7823 return -TARGET_EFAULT;
7824 rt_act->_sa_handler = oact._sa_handler;
7825 rt_act->sa_mask = oact.sa_mask;
7826 rt_act->sa_flags = oact.sa_flags;
7827 unlock_user_struct(rt_act, arg3, 1);
7828 }
7829 #else
7830 #ifdef TARGET_SPARC
7831 target_ulong restorer = arg4;
7832 target_ulong sigsetsize = arg5;
7833 #else
7834 target_ulong sigsetsize = arg4;
7835 #endif
7836 struct target_sigaction *act;
7837 struct target_sigaction *oact;
7838
7839 if (sigsetsize != sizeof(target_sigset_t)) {
7840 return -TARGET_EINVAL;
7841 }
7842 if (arg2) {
7843 if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
7844 return -TARGET_EFAULT;
7845 }
7846 #ifdef TARGET_ARCH_HAS_KA_RESTORER
7847 act->ka_restorer = restorer;
7848 #endif
7849 } else {
7850 act = NULL;
7851 }
7852 if (arg3) {
7853 if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) {
7854 ret = -TARGET_EFAULT;
7855 goto rt_sigaction_fail;
7856 }
7857 } else
7858 oact = NULL;
7859 ret = get_errno(do_sigaction(arg1, act, oact));
7860 rt_sigaction_fail:
7861 if (act)
7862 unlock_user_struct(act, arg2, 0);
7863 if (oact)
7864 unlock_user_struct(oact, arg3, 1);
7865 #endif
7866 }
7867 return ret;
7868 #ifdef TARGET_NR_sgetmask /* not on alpha */
7869 case TARGET_NR_sgetmask:
7870 {
7871 sigset_t cur_set;
7872 abi_ulong target_set;
7873 ret = do_sigprocmask(0, NULL, &cur_set);
7874 if (!ret) {
7875 host_to_target_old_sigset(&target_set, &cur_set);
7876 ret = target_set;
7877 }
7878 }
7879 return ret;
7880 #endif
7881 #ifdef TARGET_NR_ssetmask /* not on alpha */
7882 case TARGET_NR_ssetmask:
7883 {
7884 sigset_t set, oset;
7885 abi_ulong target_set = arg1;
7886 target_to_host_old_sigset(&set, &target_set);
7887 ret = do_sigprocmask(SIG_SETMASK, &set, &oset);
7888 if (!ret) {
7889 host_to_target_old_sigset(&target_set, &oset);
7890 ret = target_set;
7891 }
7892 }
7893 return ret;
7894 #endif
7895 #ifdef TARGET_NR_sigprocmask
7896 case TARGET_NR_sigprocmask:
7897 {
7898 #if defined(TARGET_ALPHA)
7899 sigset_t set, oldset;
7900 abi_ulong mask;
7901 int how;
7902
7903 switch (arg1) {
7904 case TARGET_SIG_BLOCK:
7905 how = SIG_BLOCK;
7906 break;
7907 case TARGET_SIG_UNBLOCK:
7908 how = SIG_UNBLOCK;
7909 break;
7910 case TARGET_SIG_SETMASK:
7911 how = SIG_SETMASK;
7912 break;
7913 default:
7914 return -TARGET_EINVAL;
7915 }
7916 mask = arg2;
7917 target_to_host_old_sigset(&set, &mask);
7918
7919 ret = do_sigprocmask(how, &set, &oldset);
7920 if (!is_error(ret)) {
7921 host_to_target_old_sigset(&mask, &oldset);
7922 ret = mask;
7923 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
7924 }
7925 #else
7926 sigset_t set, oldset, *set_ptr;
7927 int how;
7928
7929 if (arg2) {
7930 switch (arg1) {
7931 case TARGET_SIG_BLOCK:
7932 how = SIG_BLOCK;
7933 break;
7934 case TARGET_SIG_UNBLOCK:
7935 how = SIG_UNBLOCK;
7936 break;
7937 case TARGET_SIG_SETMASK:
7938 how = SIG_SETMASK;
7939 break;
7940 default:
7941 return -TARGET_EINVAL;
7942 }
7943 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
7944 return -TARGET_EFAULT;
7945 target_to_host_old_sigset(&set, p);
7946 unlock_user(p, arg2, 0);
7947 set_ptr = &set;
7948 } else {
7949 how = 0;
7950 set_ptr = NULL;
7951 }
7952 ret = do_sigprocmask(how, set_ptr, &oldset);
7953 if (!is_error(ret) && arg3) {
7954 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
7955 return -TARGET_EFAULT;
7956 host_to_target_old_sigset(p, &oldset);
7957 unlock_user(p, arg3, sizeof(target_sigset_t));
7958 }
7959 #endif
7960 }
7961 return ret;
7962 #endif
7963 case TARGET_NR_rt_sigprocmask:
7964 {
7965 int how = arg1;
7966 sigset_t set, oldset, *set_ptr;
7967
7968 if (arg4 != sizeof(target_sigset_t)) {
7969 return -TARGET_EINVAL;
7970 }
7971
7972 if (arg2) {
7973 switch(how) {
7974 case TARGET_SIG_BLOCK:
7975 how = SIG_BLOCK;
7976 break;
7977 case TARGET_SIG_UNBLOCK:
7978 how = SIG_UNBLOCK;
7979 break;
7980 case TARGET_SIG_SETMASK:
7981 how = SIG_SETMASK;
7982 break;
7983 default:
7984 return -TARGET_EINVAL;
7985 }
7986 if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
7987 return -TARGET_EFAULT;
7988 target_to_host_sigset(&set, p);
7989 unlock_user(p, arg2, 0);
7990 set_ptr = &set;
7991 } else {
7992 how = 0;
7993 set_ptr = NULL;
7994 }
7995 ret = do_sigprocmask(how, set_ptr, &oldset);
7996 if (!is_error(ret) && arg3) {
7997 if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
7998 return -TARGET_EFAULT;
7999 host_to_target_sigset(p, &oldset);
8000 unlock_user(p, arg3, sizeof(target_sigset_t));
8001 }
8002 }
8003 return ret;
8004 #ifdef TARGET_NR_sigpending
8005 case TARGET_NR_sigpending:
8006 {
8007 sigset_t set;
8008 ret = get_errno(sigpending(&set));
8009 if (!is_error(ret)) {
8010 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8011 return -TARGET_EFAULT;
8012 host_to_target_old_sigset(p, &set);
8013 unlock_user(p, arg1, sizeof(target_sigset_t));
8014 }
8015 }
8016 return ret;
8017 #endif
8018 case TARGET_NR_rt_sigpending:
8019 {
8020 sigset_t set;
8021
8022 /* Yes, this check is >, not != like most. We follow the kernel's
8023 * logic and it does it like this because it implements
8024 * NR_sigpending through the same code path, and in that case
8025 * the old_sigset_t is smaller in size.
8026 */
8027 if (arg2 > sizeof(target_sigset_t)) {
8028 return -TARGET_EINVAL;
8029 }
8030
8031 ret = get_errno(sigpending(&set));
8032 if (!is_error(ret)) {
8033 if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0)))
8034 return -TARGET_EFAULT;
8035 host_to_target_sigset(p, &set);
8036 unlock_user(p, arg1, sizeof(target_sigset_t));
8037 }
8038 }
8039 return ret;
8040 #ifdef TARGET_NR_sigsuspend
8041 case TARGET_NR_sigsuspend:
8042 {
8043 TaskState *ts = cpu->opaque;
8044 #if defined(TARGET_ALPHA)
8045 abi_ulong mask = arg1;
8046 target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
8047 #else
8048 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8049 return -TARGET_EFAULT;
8050 target_to_host_old_sigset(&ts->sigsuspend_mask, p);
8051 unlock_user(p, arg1, 0);
8052 #endif
8053 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8054 SIGSET_T_SIZE));
8055 if (ret != -TARGET_ERESTARTSYS) {
8056 ts->in_sigsuspend = 1;
8057 }
8058 }
8059 return ret;
8060 #endif
8061 case TARGET_NR_rt_sigsuspend:
8062 {
8063 TaskState *ts = cpu->opaque;
8064
8065 if (arg2 != sizeof(target_sigset_t)) {
8066 return -TARGET_EINVAL;
8067 }
8068 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8069 return -TARGET_EFAULT;
8070 target_to_host_sigset(&ts->sigsuspend_mask, p);
8071 unlock_user(p, arg1, 0);
8072 ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
8073 SIGSET_T_SIZE));
8074 if (ret != -TARGET_ERESTARTSYS) {
8075 ts->in_sigsuspend = 1;
8076 }
8077 }
8078 return ret;
8079 case TARGET_NR_rt_sigtimedwait:
8080 {
8081 sigset_t set;
8082 struct timespec uts, *puts;
8083 siginfo_t uinfo;
8084
8085 if (arg4 != sizeof(target_sigset_t)) {
8086 return -TARGET_EINVAL;
8087 }
8088
8089 if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
8090 return -TARGET_EFAULT;
8091 target_to_host_sigset(&set, p);
8092 unlock_user(p, arg1, 0);
8093 if (arg3) {
8094 puts = &uts;
8095 target_to_host_timespec(puts, arg3);
8096 } else {
8097 puts = NULL;
8098 }
8099 ret = get_errno(safe_rt_sigtimedwait(&set, &uinfo, puts,
8100 SIGSET_T_SIZE));
8101 if (!is_error(ret)) {
8102 if (arg2) {
8103 p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t),
8104 0);
8105 if (!p) {
8106 return -TARGET_EFAULT;
8107 }
8108 host_to_target_siginfo(p, &uinfo);
8109 unlock_user(p, arg2, sizeof(target_siginfo_t));
8110 }
8111 ret = host_to_target_signal(ret);
8112 }
8113 }
8114 return ret;
8115 case TARGET_NR_rt_sigqueueinfo:
8116 {
8117 siginfo_t uinfo;
8118
8119 p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1);
8120 if (!p) {
8121 return -TARGET_EFAULT;
8122 }
8123 target_to_host_siginfo(&uinfo, p);
8124 unlock_user(p, arg3, 0);
8125 ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
8126 }
8127 return ret;
8128 case TARGET_NR_rt_tgsigqueueinfo:
8129 {
8130 siginfo_t uinfo;
8131
8132 p = lock_user(VERIFY_READ, arg4, sizeof(target_siginfo_t), 1);
8133 if (!p) {
8134 return -TARGET_EFAULT;
8135 }
8136 target_to_host_siginfo(&uinfo, p);
8137 unlock_user(p, arg4, 0);
8138 ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo));
8139 }
8140 return ret;
8141 #ifdef TARGET_NR_sigreturn
8142 case TARGET_NR_sigreturn:
8143 if (block_signals()) {
8144 return -TARGET_ERESTARTSYS;
8145 }
8146 return do_sigreturn(cpu_env);
8147 #endif
8148 case TARGET_NR_rt_sigreturn:
8149 if (block_signals()) {
8150 return -TARGET_ERESTARTSYS;
8151 }
8152 return do_rt_sigreturn(cpu_env);
8153 case TARGET_NR_sethostname:
8154 if (!(p = lock_user_string(arg1)))
8155 return -TARGET_EFAULT;
8156 ret = get_errno(sethostname(p, arg2));
8157 unlock_user(p, arg1, 0);
8158 return ret;
8159 #ifdef TARGET_NR_setrlimit
8160 case TARGET_NR_setrlimit:
8161 {
8162 int resource = target_to_host_resource(arg1);
8163 struct target_rlimit *target_rlim;
8164 struct rlimit rlim;
8165 if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1))
8166 return -TARGET_EFAULT;
8167 rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur);
8168 rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max);
8169 unlock_user_struct(target_rlim, arg2, 0);
8170 /*
8171 * If we just passed through resource limit settings for memory then
8172 * they would also apply to QEMU's own allocations, and QEMU will
8173 * crash or hang or die if its allocations fail. Ideally we would
8174 * track the guest allocations in QEMU and apply the limits ourselves.
8175 * For now, just tell the guest the call succeeded but don't actually
8176 * limit anything.
8177 */
8178 if (resource != RLIMIT_AS &&
8179 resource != RLIMIT_DATA &&
8180 resource != RLIMIT_STACK) {
8181 return get_errno(setrlimit(resource, &rlim));
8182 } else {
8183 return 0;
8184 }
8185 }
8186 #endif
8187 #ifdef TARGET_NR_getrlimit
8188 case TARGET_NR_getrlimit:
8189 {
8190 int resource = target_to_host_resource(arg1);
8191 struct target_rlimit *target_rlim;
8192 struct rlimit rlim;
8193
8194 ret = get_errno(getrlimit(resource, &rlim));
8195 if (!is_error(ret)) {
8196 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
8197 return -TARGET_EFAULT;
8198 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
8199 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
8200 unlock_user_struct(target_rlim, arg2, 1);
8201 }
8202 }
8203 return ret;
8204 #endif
8205 case TARGET_NR_getrusage:
8206 {
8207 struct rusage rusage;
8208 ret = get_errno(getrusage(arg1, &rusage));
8209 if (!is_error(ret)) {
8210 ret = host_to_target_rusage(arg2, &rusage);
8211 }
8212 }
8213 return ret;
8214 case TARGET_NR_gettimeofday:
8215 {
8216 struct timeval tv;
8217 ret = get_errno(gettimeofday(&tv, NULL));
8218 if (!is_error(ret)) {
8219 if (copy_to_user_timeval(arg1, &tv))
8220 return -TARGET_EFAULT;
8221 }
8222 }
8223 return ret;
8224 case TARGET_NR_settimeofday:
8225 {
8226 struct timeval tv, *ptv = NULL;
8227 struct timezone tz, *ptz = NULL;
8228
8229 if (arg1) {
8230 if (copy_from_user_timeval(&tv, arg1)) {
8231 return -TARGET_EFAULT;
8232 }
8233 ptv = &tv;
8234 }
8235
8236 if (arg2) {
8237 if (copy_from_user_timezone(&tz, arg2)) {
8238 return -TARGET_EFAULT;
8239 }
8240 ptz = &tz;
8241 }
8242
8243 return get_errno(settimeofday(ptv, ptz));
8244 }
8245 #if defined(TARGET_NR_select)
8246 case TARGET_NR_select:
8247 #if defined(TARGET_WANT_NI_OLD_SELECT)
8248 /* some architectures used to have old_select here
8249 * but now ENOSYS it.
8250 */
8251 ret = -TARGET_ENOSYS;
8252 #elif defined(TARGET_WANT_OLD_SYS_SELECT)
8253 ret = do_old_select(arg1);
8254 #else
8255 ret = do_select(arg1, arg2, arg3, arg4, arg5);
8256 #endif
8257 return ret;
8258 #endif
8259 #ifdef TARGET_NR_pselect6
8260 case TARGET_NR_pselect6:
8261 {
8262 abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr;
8263 fd_set rfds, wfds, efds;
8264 fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
8265 struct timespec ts, *ts_ptr;
8266
8267 /*
8268 * The 6th arg is actually two args smashed together,
8269 * so we cannot use the C library.
8270 */
8271 sigset_t set;
8272 struct {
8273 sigset_t *set;
8274 size_t size;
8275 } sig, *sig_ptr;
8276
8277 abi_ulong arg_sigset, arg_sigsize, *arg7;
8278 target_sigset_t *target_sigset;
8279
8280 n = arg1;
8281 rfd_addr = arg2;
8282 wfd_addr = arg3;
8283 efd_addr = arg4;
8284 ts_addr = arg5;
8285
8286 ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
8287 if (ret) {
8288 return ret;
8289 }
8290 ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
8291 if (ret) {
8292 return ret;
8293 }
8294 ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
8295 if (ret) {
8296 return ret;
8297 }
8298
8299 /*
8300 * This takes a timespec, and not a timeval, so we cannot
8301 * use the do_select() helper ...
8302 */
8303 if (ts_addr) {
8304 if (target_to_host_timespec(&ts, ts_addr)) {
8305 return -TARGET_EFAULT;
8306 }
8307 ts_ptr = &ts;
8308 } else {
8309 ts_ptr = NULL;
8310 }
8311
8312 /* Extract the two packed args for the sigset */
8313 if (arg6) {
8314 sig_ptr = &sig;
8315 sig.size = SIGSET_T_SIZE;
8316
8317 arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1);
8318 if (!arg7) {
8319 return -TARGET_EFAULT;
8320 }
8321 arg_sigset = tswapal(arg7[0]);
8322 arg_sigsize = tswapal(arg7[1]);
8323 unlock_user(arg7, arg6, 0);
8324
8325 if (arg_sigset) {
8326 sig.set = &set;
8327 if (arg_sigsize != sizeof(*target_sigset)) {
8328 /* Like the kernel, we enforce correct size sigsets */
8329 return -TARGET_EINVAL;
8330 }
8331 target_sigset = lock_user(VERIFY_READ, arg_sigset,
8332 sizeof(*target_sigset), 1);
8333 if (!target_sigset) {
8334 return -TARGET_EFAULT;
8335 }
8336 target_to_host_sigset(&set, target_sigset);
8337 unlock_user(target_sigset, arg_sigset, 0);
8338 } else {
8339 sig.set = NULL;
8340 }
8341 } else {
8342 sig_ptr = NULL;
8343 }
8344
8345 ret = get_errno(safe_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr,
8346 ts_ptr, sig_ptr));
8347
8348 if (!is_error(ret)) {
8349 if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
8350 return -TARGET_EFAULT;
8351 if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
8352 return -TARGET_EFAULT;
8353 if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
8354 return -TARGET_EFAULT;
8355
8356 if (ts_addr && host_to_target_timespec(ts_addr, &ts))
8357 return -TARGET_EFAULT;
8358 }
8359 }
8360 return ret;
8361 #endif
8362 #ifdef TARGET_NR_symlink
8363 case TARGET_NR_symlink:
8364 {
8365 void *p2;
8366 p = lock_user_string(arg1);
8367 p2 = lock_user_string(arg2);
8368 if (!p || !p2)
8369 ret = -TARGET_EFAULT;
8370 else
8371 ret = get_errno(symlink(p, p2));
8372 unlock_user(p2, arg2, 0);
8373 unlock_user(p, arg1, 0);
8374 }
8375 return ret;
8376 #endif
8377 #if defined(TARGET_NR_symlinkat)
8378 case TARGET_NR_symlinkat:
8379 {
8380 void *p2;
8381 p = lock_user_string(arg1);
8382 p2 = lock_user_string(arg3);
8383 if (!p || !p2)
8384 ret = -TARGET_EFAULT;
8385 else
8386 ret = get_errno(symlinkat(p, arg2, p2));
8387 unlock_user(p2, arg3, 0);
8388 unlock_user(p, arg1, 0);
8389 }
8390 return ret;
8391 #endif
8392 #ifdef TARGET_NR_readlink
8393 case TARGET_NR_readlink:
8394 {
8395 void *p2;
8396 p = lock_user_string(arg1);
8397 p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0);
8398 if (!p || !p2) {
8399 ret = -TARGET_EFAULT;
8400 } else if (!arg3) {
8401 /* Short circuit this for the magic exe check. */
8402 ret = -TARGET_EINVAL;
8403 } else if (is_proc_myself((const char *)p, "exe")) {
8404 char real[PATH_MAX], *temp;
8405 temp = realpath(exec_path, real);
8406 /* Return value is # of bytes that we wrote to the buffer. */
8407 if (temp == NULL) {
8408 ret = get_errno(-1);
8409 } else {
8410 /* Don't worry about sign mismatch as earlier mapping
8411 * logic would have thrown a bad address error. */
8412 ret = MIN(strlen(real), arg3);
8413 /* We cannot NUL terminate the string. */
8414 memcpy(p2, real, ret);
8415 }
8416 } else {
8417 ret = get_errno(readlink(path(p), p2, arg3));
8418 }
8419 unlock_user(p2, arg2, ret);
8420 unlock_user(p, arg1, 0);
8421 }
8422 return ret;
8423 #endif
8424 #if defined(TARGET_NR_readlinkat)
8425 case TARGET_NR_readlinkat:
8426 {
8427 void *p2;
8428 p = lock_user_string(arg2);
8429 p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0);
8430 if (!p || !p2) {
8431 ret = -TARGET_EFAULT;
8432 } else if (is_proc_myself((const char *)p, "exe")) {
8433 char real[PATH_MAX], *temp;
8434 temp = realpath(exec_path, real);
8435 ret = temp == NULL ? get_errno(-1) : strlen(real) ;
8436 snprintf((char *)p2, arg4, "%s", real);
8437 } else {
8438 ret = get_errno(readlinkat(arg1, path(p), p2, arg4));
8439 }
8440 unlock_user(p2, arg3, ret);
8441 unlock_user(p, arg2, 0);
8442 }
8443 return ret;
8444 #endif
8445 #ifdef TARGET_NR_swapon
8446 case TARGET_NR_swapon:
8447 if (!(p = lock_user_string(arg1)))
8448 return -TARGET_EFAULT;
8449 ret = get_errno(swapon(p, arg2));
8450 unlock_user(p, arg1, 0);
8451 return ret;
8452 #endif
8453 case TARGET_NR_reboot:
8454 if (arg3 == LINUX_REBOOT_CMD_RESTART2) {
8455 /* arg4 must be ignored in all other cases */
8456 p = lock_user_string(arg4);
8457 if (!p) {
8458 return -TARGET_EFAULT;
8459 }
8460 ret = get_errno(reboot(arg1, arg2, arg3, p));
8461 unlock_user(p, arg4, 0);
8462 } else {
8463 ret = get_errno(reboot(arg1, arg2, arg3, NULL));
8464 }
8465 return ret;
8466 #ifdef TARGET_NR_mmap
8467 case TARGET_NR_mmap:
8468 #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
8469 (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
8470 defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
8471 || defined(TARGET_S390X)
8472 {
8473 abi_ulong *v;
8474 abi_ulong v1, v2, v3, v4, v5, v6;
8475 if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1)))
8476 return -TARGET_EFAULT;
8477 v1 = tswapal(v[0]);
8478 v2 = tswapal(v[1]);
8479 v3 = tswapal(v[2]);
8480 v4 = tswapal(v[3]);
8481 v5 = tswapal(v[4]);
8482 v6 = tswapal(v[5]);
8483 unlock_user(v, arg1, 0);
8484 ret = get_errno(target_mmap(v1, v2, v3,
8485 target_to_host_bitmask(v4, mmap_flags_tbl),
8486 v5, v6));
8487 }
8488 #else
8489 ret = get_errno(target_mmap(arg1, arg2, arg3,
8490 target_to_host_bitmask(arg4, mmap_flags_tbl),
8491 arg5,
8492 arg6));
8493 #endif
8494 return ret;
8495 #endif
8496 #ifdef TARGET_NR_mmap2
8497 case TARGET_NR_mmap2:
8498 #ifndef MMAP_SHIFT
8499 #define MMAP_SHIFT 12
8500 #endif
8501 ret = target_mmap(arg1, arg2, arg3,
8502 target_to_host_bitmask(arg4, mmap_flags_tbl),
8503 arg5, arg6 << MMAP_SHIFT);
8504 return get_errno(ret);
8505 #endif
8506 case TARGET_NR_munmap:
8507 return get_errno(target_munmap(arg1, arg2));
8508 case TARGET_NR_mprotect:
8509 {
8510 TaskState *ts = cpu->opaque;
8511 /* Special hack to detect libc making the stack executable. */
8512 if ((arg3 & PROT_GROWSDOWN)
8513 && arg1 >= ts->info->stack_limit
8514 && arg1 <= ts->info->start_stack) {
8515 arg3 &= ~PROT_GROWSDOWN;
8516 arg2 = arg2 + arg1 - ts->info->stack_limit;
8517 arg1 = ts->info->stack_limit;
8518 }
8519 }
8520 return get_errno(target_mprotect(arg1, arg2, arg3));
8521 #ifdef TARGET_NR_mremap
8522 case TARGET_NR_mremap:
8523 return get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
8524 #endif
8525 /* ??? msync/mlock/munlock are broken for softmmu. */
8526 #ifdef TARGET_NR_msync
8527 case TARGET_NR_msync:
8528 return get_errno(msync(g2h(arg1), arg2, arg3));
8529 #endif
8530 #ifdef TARGET_NR_mlock
8531 case TARGET_NR_mlock:
8532 return get_errno(mlock(g2h(arg1), arg2));
8533 #endif
8534 #ifdef TARGET_NR_munlock
8535 case TARGET_NR_munlock:
8536 return get_errno(munlock(g2h(arg1), arg2));
8537 #endif
8538 #ifdef TARGET_NR_mlockall
8539 case TARGET_NR_mlockall:
8540 return get_errno(mlockall(target_to_host_mlockall_arg(arg1)));
8541 #endif
8542 #ifdef TARGET_NR_munlockall
8543 case TARGET_NR_munlockall:
8544 return get_errno(munlockall());
8545 #endif
8546 #ifdef TARGET_NR_truncate
8547 case TARGET_NR_truncate:
8548 if (!(p = lock_user_string(arg1)))
8549 return -TARGET_EFAULT;
8550 ret = get_errno(truncate(p, arg2));
8551 unlock_user(p, arg1, 0);
8552 return ret;
8553 #endif
8554 #ifdef TARGET_NR_ftruncate
8555 case TARGET_NR_ftruncate:
8556 return get_errno(ftruncate(arg1, arg2));
8557 #endif
8558 case TARGET_NR_fchmod:
8559 return get_errno(fchmod(arg1, arg2));
8560 #if defined(TARGET_NR_fchmodat)
8561 case TARGET_NR_fchmodat:
8562 if (!(p = lock_user_string(arg2)))
8563 return -TARGET_EFAULT;
8564 ret = get_errno(fchmodat(arg1, p, arg3, 0));
8565 unlock_user(p, arg2, 0);
8566 return ret;
8567 #endif
8568 case TARGET_NR_getpriority:
8569 /* Note that negative values are valid for getpriority, so we must
8570 differentiate based on errno settings. */
8571 errno = 0;
8572 ret = getpriority(arg1, arg2);
8573 if (ret == -1 && errno != 0) {
8574 return -host_to_target_errno(errno);
8575 }
8576 #ifdef TARGET_ALPHA
8577 /* Return value is the unbiased priority. Signal no error. */
8578 ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0;
8579 #else
8580 /* Return value is a biased priority to avoid negative numbers. */
8581 ret = 20 - ret;
8582 #endif
8583 return ret;
8584 case TARGET_NR_setpriority:
8585 return get_errno(setpriority(arg1, arg2, arg3));
8586 #ifdef TARGET_NR_statfs
8587 case TARGET_NR_statfs:
8588 if (!(p = lock_user_string(arg1))) {
8589 return -TARGET_EFAULT;
8590 }
8591 ret = get_errno(statfs(path(p), &stfs));
8592 unlock_user(p, arg1, 0);
8593 convert_statfs:
8594 if (!is_error(ret)) {
8595 struct target_statfs *target_stfs;
8596
8597 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0))
8598 return -TARGET_EFAULT;
8599 __put_user(stfs.f_type, &target_stfs->f_type);
8600 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
8601 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
8602 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
8603 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
8604 __put_user(stfs.f_files, &target_stfs->f_files);
8605 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
8606 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
8607 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
8608 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
8609 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
8610 #ifdef _STATFS_F_FLAGS
8611 __put_user(stfs.f_flags, &target_stfs->f_flags);
8612 #else
8613 __put_user(0, &target_stfs->f_flags);
8614 #endif
8615 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
8616 unlock_user_struct(target_stfs, arg2, 1);
8617 }
8618 return ret;
8619 #endif
8620 #ifdef TARGET_NR_fstatfs
8621 case TARGET_NR_fstatfs:
8622 ret = get_errno(fstatfs(arg1, &stfs));
8623 goto convert_statfs;
8624 #endif
8625 #ifdef TARGET_NR_statfs64
8626 case TARGET_NR_statfs64:
8627 if (!(p = lock_user_string(arg1))) {
8628 return -TARGET_EFAULT;
8629 }
8630 ret = get_errno(statfs(path(p), &stfs));
8631 unlock_user(p, arg1, 0);
8632 convert_statfs64:
8633 if (!is_error(ret)) {
8634 struct target_statfs64 *target_stfs;
8635
8636 if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0))
8637 return -TARGET_EFAULT;
8638 __put_user(stfs.f_type, &target_stfs->f_type);
8639 __put_user(stfs.f_bsize, &target_stfs->f_bsize);
8640 __put_user(stfs.f_blocks, &target_stfs->f_blocks);
8641 __put_user(stfs.f_bfree, &target_stfs->f_bfree);
8642 __put_user(stfs.f_bavail, &target_stfs->f_bavail);
8643 __put_user(stfs.f_files, &target_stfs->f_files);
8644 __put_user(stfs.f_ffree, &target_stfs->f_ffree);
8645 __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
8646 __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
8647 __put_user(stfs.f_namelen, &target_stfs->f_namelen);
8648 __put_user(stfs.f_frsize, &target_stfs->f_frsize);
8649 memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare));
8650 unlock_user_struct(target_stfs, arg3, 1);
8651 }
8652 return ret;
8653 case TARGET_NR_fstatfs64:
8654 ret = get_errno(fstatfs(arg1, &stfs));
8655 goto convert_statfs64;
8656 #endif
8657 #ifdef TARGET_NR_socketcall
8658 case TARGET_NR_socketcall:
8659 return do_socketcall(arg1, arg2);
8660 #endif
8661 #ifdef TARGET_NR_accept
8662 case TARGET_NR_accept:
8663 return do_accept4(arg1, arg2, arg3, 0);
8664 #endif
8665 #ifdef TARGET_NR_accept4
8666 case TARGET_NR_accept4:
8667 return do_accept4(arg1, arg2, arg3, arg4);
8668 #endif
8669 #ifdef TARGET_NR_bind
8670 case TARGET_NR_bind:
8671 return do_bind(arg1, arg2, arg3);
8672 #endif
8673 #ifdef TARGET_NR_connect
8674 case TARGET_NR_connect:
8675 return do_connect(arg1, arg2, arg3);
8676 #endif
8677 #ifdef TARGET_NR_getpeername
8678 case TARGET_NR_getpeername:
8679 return do_getpeername(arg1, arg2, arg3);
8680 #endif
8681 #ifdef TARGET_NR_getsockname
8682 case TARGET_NR_getsockname:
8683 return do_getsockname(arg1, arg2, arg3);
8684 #endif
8685 #ifdef TARGET_NR_getsockopt
8686 case TARGET_NR_getsockopt:
8687 return do_getsockopt(arg1, arg2, arg3, arg4, arg5);
8688 #endif
8689 #ifdef TARGET_NR_listen
8690 case TARGET_NR_listen:
8691 return get_errno(listen(arg1, arg2));
8692 #endif
8693 #ifdef TARGET_NR_recv
8694 case TARGET_NR_recv:
8695 return do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
8696 #endif
8697 #ifdef TARGET_NR_recvfrom
8698 case TARGET_NR_recvfrom:
8699 return do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
8700 #endif
8701 #ifdef TARGET_NR_recvmsg
8702 case TARGET_NR_recvmsg:
8703 return do_sendrecvmsg(arg1, arg2, arg3, 0);
8704 #endif
8705 #ifdef TARGET_NR_send
8706 case TARGET_NR_send:
8707 return do_sendto(arg1, arg2, arg3, arg4, 0, 0);
8708 #endif
8709 #ifdef TARGET_NR_sendmsg
8710 case TARGET_NR_sendmsg:
8711 return do_sendrecvmsg(arg1, arg2, arg3, 1);
8712 #endif
8713 #ifdef TARGET_NR_sendmmsg
8714 case TARGET_NR_sendmmsg:
8715 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1);
8716 case TARGET_NR_recvmmsg:
8717 return do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0);
8718 #endif
8719 #ifdef TARGET_NR_sendto
8720 case TARGET_NR_sendto:
8721 return do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
8722 #endif
8723 #ifdef TARGET_NR_shutdown
8724 case TARGET_NR_shutdown:
8725 return get_errno(shutdown(arg1, arg2));
8726 #endif
8727 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
8728 case TARGET_NR_getrandom:
8729 p = lock_user(VERIFY_WRITE, arg1, arg2, 0);
8730 if (!p) {
8731 return -TARGET_EFAULT;
8732 }
8733 ret = get_errno(getrandom(p, arg2, arg3));
8734 unlock_user(p, arg1, ret);
8735 return ret;
8736 #endif
8737 #ifdef TARGET_NR_socket
8738 case TARGET_NR_socket:
8739 return do_socket(arg1, arg2, arg3);
8740 #endif
8741 #ifdef TARGET_NR_socketpair
8742 case TARGET_NR_socketpair:
8743 return do_socketpair(arg1, arg2, arg3, arg4);
8744 #endif
8745 #ifdef TARGET_NR_setsockopt
8746 case TARGET_NR_setsockopt:
8747 return do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
8748 #endif
8749 #if defined(TARGET_NR_syslog)
8750 case TARGET_NR_syslog:
8751 {
8752 int len = arg2;
8753
8754 switch (arg1) {
8755 case TARGET_SYSLOG_ACTION_CLOSE: /* Close log */
8756 case TARGET_SYSLOG_ACTION_OPEN: /* Open log */
8757 case TARGET_SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
8758 case TARGET_SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging */
8759 case TARGET_SYSLOG_ACTION_CONSOLE_ON: /* Enable logging */
8760 case TARGET_SYSLOG_ACTION_CONSOLE_LEVEL: /* Set messages level */
8761 case TARGET_SYSLOG_ACTION_SIZE_UNREAD: /* Number of chars */
8762 case TARGET_SYSLOG_ACTION_SIZE_BUFFER: /* Size of the buffer */
8763 return get_errno(sys_syslog((int)arg1, NULL, (int)arg3));
8764 case TARGET_SYSLOG_ACTION_READ: /* Read from log */
8765 case TARGET_SYSLOG_ACTION_READ_CLEAR: /* Read/clear msgs */
8766 case TARGET_SYSLOG_ACTION_READ_ALL: /* Read last messages */
8767 {
8768 if (len < 0) {
8769 return -TARGET_EINVAL;
8770 }
8771 if (len == 0) {
8772 return 0;
8773 }
8774 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
8775 if (!p) {
8776 return -TARGET_EFAULT;
8777 }
8778 ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
8779 unlock_user(p, arg2, arg3);
8780 }
8781 return ret;
8782 default:
8783 return -TARGET_EINVAL;
8784 }
8785 }
8786 break;
8787 #endif
8788 case TARGET_NR_setitimer:
8789 {
8790 struct itimerval value, ovalue, *pvalue;
8791
8792 if (arg2) {
8793 pvalue = &value;
8794 if (copy_from_user_timeval(&pvalue->it_interval, arg2)
8795 || copy_from_user_timeval(&pvalue->it_value,
8796 arg2 + sizeof(struct target_timeval)))
8797 return -TARGET_EFAULT;
8798 } else {
8799 pvalue = NULL;
8800 }
8801 ret = get_errno(setitimer(arg1, pvalue, &ovalue));
8802 if (!is_error(ret) && arg3) {
8803 if (copy_to_user_timeval(arg3,
8804 &ovalue.it_interval)
8805 || copy_to_user_timeval(arg3 + sizeof(struct target_timeval),
8806 &ovalue.it_value))
8807 return -TARGET_EFAULT;
8808 }
8809 }
8810 return ret;
8811 case TARGET_NR_getitimer:
8812 {
8813 struct itimerval value;
8814
8815 ret = get_errno(getitimer(arg1, &value));
8816 if (!is_error(ret) && arg2) {
8817 if (copy_to_user_timeval(arg2,
8818 &value.it_interval)
8819 || copy_to_user_timeval(arg2 + sizeof(struct target_timeval),
8820 &value.it_value))
8821 return -TARGET_EFAULT;
8822 }
8823 }
8824 return ret;
8825 #ifdef TARGET_NR_stat
8826 case TARGET_NR_stat:
8827 if (!(p = lock_user_string(arg1))) {
8828 return -TARGET_EFAULT;
8829 }
8830 ret = get_errno(stat(path(p), &st));
8831 unlock_user(p, arg1, 0);
8832 goto do_stat;
8833 #endif
8834 #ifdef TARGET_NR_lstat
8835 case TARGET_NR_lstat:
8836 if (!(p = lock_user_string(arg1))) {
8837 return -TARGET_EFAULT;
8838 }
8839 ret = get_errno(lstat(path(p), &st));
8840 unlock_user(p, arg1, 0);
8841 goto do_stat;
8842 #endif
8843 #ifdef TARGET_NR_fstat
8844 case TARGET_NR_fstat:
8845 {
8846 ret = get_errno(fstat(arg1, &st));
8847 #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
8848 do_stat:
8849 #endif
8850 if (!is_error(ret)) {
8851 struct target_stat *target_st;
8852
8853 if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0))
8854 return -TARGET_EFAULT;
8855 memset(target_st, 0, sizeof(*target_st));
8856 __put_user(st.st_dev, &target_st->st_dev);
8857 __put_user(st.st_ino, &target_st->st_ino);
8858 __put_user(st.st_mode, &target_st->st_mode);
8859 __put_user(st.st_uid, &target_st->st_uid);
8860 __put_user(st.st_gid, &target_st->st_gid);
8861 __put_user(st.st_nlink, &target_st->st_nlink);
8862 __put_user(st.st_rdev, &target_st->st_rdev);
8863 __put_user(st.st_size, &target_st->st_size);
8864 __put_user(st.st_blksize, &target_st->st_blksize);
8865 __put_user(st.st_blocks, &target_st->st_blocks);
8866 __put_user(st.st_atime, &target_st->target_st_atime);
8867 __put_user(st.st_mtime, &target_st->target_st_mtime);
8868 __put_user(st.st_ctime, &target_st->target_st_ctime);
8869 unlock_user_struct(target_st, arg2, 1);
8870 }
8871 }
8872 return ret;
8873 #endif
8874 case TARGET_NR_vhangup:
8875 return get_errno(vhangup());
8876 #ifdef TARGET_NR_syscall
8877 case TARGET_NR_syscall:
8878 return do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
8879 arg6, arg7, arg8, 0);
8880 #endif
8881 case TARGET_NR_wait4:
8882 {
8883 int status;
8884 abi_long status_ptr = arg2;
8885 struct rusage rusage, *rusage_ptr;
8886 abi_ulong target_rusage = arg4;
8887 abi_long rusage_err;
8888 if (target_rusage)
8889 rusage_ptr = &rusage;
8890 else
8891 rusage_ptr = NULL;
8892 ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr));
8893 if (!is_error(ret)) {
8894 if (status_ptr && ret) {
8895 status = host_to_target_waitstatus(status);
8896 if (put_user_s32(status, status_ptr))
8897 return -TARGET_EFAULT;
8898 }
8899 if (target_rusage) {
8900 rusage_err = host_to_target_rusage(target_rusage, &rusage);
8901 if (rusage_err) {
8902 ret = rusage_err;
8903 }
8904 }
8905 }
8906 }
8907 return ret;
8908 #ifdef TARGET_NR_swapoff
8909 case TARGET_NR_swapoff:
8910 if (!(p = lock_user_string(arg1)))
8911 return -TARGET_EFAULT;
8912 ret = get_errno(swapoff(p));
8913 unlock_user(p, arg1, 0);
8914 return ret;
8915 #endif
8916 case TARGET_NR_sysinfo:
8917 {
8918 struct target_sysinfo *target_value;
8919 struct sysinfo value;
8920 ret = get_errno(sysinfo(&value));
8921 if (!is_error(ret) && arg1)
8922 {
8923 if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0))
8924 return -TARGET_EFAULT;
8925 __put_user(value.uptime, &target_value->uptime);
8926 __put_user(value.loads[0], &target_value->loads[0]);
8927 __put_user(value.loads[1], &target_value->loads[1]);
8928 __put_user(value.loads[2], &target_value->loads[2]);
8929 __put_user(value.totalram, &target_value->totalram);
8930 __put_user(value.freeram, &target_value->freeram);
8931 __put_user(value.sharedram, &target_value->sharedram);
8932 __put_user(value.bufferram, &target_value->bufferram);
8933 __put_user(value.totalswap, &target_value->totalswap);
8934 __put_user(value.freeswap, &target_value->freeswap);
8935 __put_user(value.procs, &target_value->procs);
8936 __put_user(value.totalhigh, &target_value->totalhigh);
8937 __put_user(value.freehigh, &target_value->freehigh);
8938 __put_user(value.mem_unit, &target_value->mem_unit);
8939 unlock_user_struct(target_value, arg1, 1);
8940 }
8941 }
8942 return ret;
8943 #ifdef TARGET_NR_ipc
8944 case TARGET_NR_ipc:
8945 return do_ipc(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
8946 #endif
8947 #ifdef TARGET_NR_semget
8948 case TARGET_NR_semget:
8949 return get_errno(semget(arg1, arg2, arg3));
8950 #endif
8951 #ifdef TARGET_NR_semop
8952 case TARGET_NR_semop:
8953 return do_semop(arg1, arg2, arg3);
8954 #endif
8955 #ifdef TARGET_NR_semctl
8956 case TARGET_NR_semctl:
8957 return do_semctl(arg1, arg2, arg3, arg4);
8958 #endif
8959 #ifdef TARGET_NR_msgctl
8960 case TARGET_NR_msgctl:
8961 return do_msgctl(arg1, arg2, arg3);
8962 #endif
8963 #ifdef TARGET_NR_msgget
8964 case TARGET_NR_msgget:
8965 return get_errno(msgget(arg1, arg2));
8966 #endif
8967 #ifdef TARGET_NR_msgrcv
8968 case TARGET_NR_msgrcv:
8969 return do_msgrcv(arg1, arg2, arg3, arg4, arg5);
8970 #endif
8971 #ifdef TARGET_NR_msgsnd
8972 case TARGET_NR_msgsnd:
8973 return do_msgsnd(arg1, arg2, arg3, arg4);
8974 #endif
8975 #ifdef TARGET_NR_shmget
8976 case TARGET_NR_shmget:
8977 return get_errno(shmget(arg1, arg2, arg3));
8978 #endif
8979 #ifdef TARGET_NR_shmctl
8980 case TARGET_NR_shmctl:
8981 return do_shmctl(arg1, arg2, arg3);
8982 #endif
8983 #ifdef TARGET_NR_shmat
8984 case TARGET_NR_shmat:
8985 return do_shmat(cpu_env, arg1, arg2, arg3);
8986 #endif
8987 #ifdef TARGET_NR_shmdt
8988 case TARGET_NR_shmdt:
8989 return do_shmdt(arg1);
8990 #endif
8991 case TARGET_NR_fsync:
8992 return get_errno(fsync(arg1));
8993 case TARGET_NR_clone:
8994 /* Linux manages to have three different orderings for its
8995 * arguments to clone(); the BACKWARDS and BACKWARDS2 defines
8996 * match the kernel's CONFIG_CLONE_* settings.
8997 * Microblaze is further special in that it uses a sixth
8998 * implicit argument to clone for the TLS pointer.
8999 */
9000 #if defined(TARGET_MICROBLAZE)
9001 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5));
9002 #elif defined(TARGET_CLONE_BACKWARDS)
9003 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5));
9004 #elif defined(TARGET_CLONE_BACKWARDS2)
9005 ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4));
9006 #else
9007 ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4));
9008 #endif
9009 return ret;
9010 #ifdef __NR_exit_group
9011 /* new thread calls */
9012 case TARGET_NR_exit_group:
9013 preexit_cleanup(cpu_env, arg1);
9014 return get_errno(exit_group(arg1));
9015 #endif
9016 case TARGET_NR_setdomainname:
9017 if (!(p = lock_user_string(arg1)))
9018 return -TARGET_EFAULT;
9019 ret = get_errno(setdomainname(p, arg2));
9020 unlock_user(p, arg1, 0);
9021 return ret;
9022 case TARGET_NR_uname:
9023 /* no need to transcode because we use the linux syscall */
9024 {
9025 struct new_utsname * buf;
9026
9027 if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0))
9028 return -TARGET_EFAULT;
9029 ret = get_errno(sys_uname(buf));
9030 if (!is_error(ret)) {
9031 /* Overwrite the native machine name with whatever is being
9032 emulated. */
9033 g_strlcpy(buf->machine, cpu_to_uname_machine(cpu_env),
9034 sizeof(buf->machine));
9035 /* Allow the user to override the reported release. */
9036 if (qemu_uname_release && *qemu_uname_release) {
9037 g_strlcpy(buf->release, qemu_uname_release,
9038 sizeof(buf->release));
9039 }
9040 }
9041 unlock_user_struct(buf, arg1, 1);
9042 }
9043 return ret;
9044 #ifdef TARGET_I386
9045 case TARGET_NR_modify_ldt:
9046 return do_modify_ldt(cpu_env, arg1, arg2, arg3);
9047 #if !defined(TARGET_X86_64)
9048 case TARGET_NR_vm86:
9049 return do_vm86(cpu_env, arg1, arg2);
9050 #endif
9051 #endif
9052 case TARGET_NR_adjtimex:
9053 {
9054 struct timex host_buf;
9055
9056 if (target_to_host_timex(&host_buf, arg1) != 0) {
9057 return -TARGET_EFAULT;
9058 }
9059 ret = get_errno(adjtimex(&host_buf));
9060 if (!is_error(ret)) {
9061 if (host_to_target_timex(arg1, &host_buf) != 0) {
9062 return -TARGET_EFAULT;
9063 }
9064 }
9065 }
9066 return ret;
9067 #if defined(TARGET_NR_clock_adjtime) && defined(CONFIG_CLOCK_ADJTIME)
9068 case TARGET_NR_clock_adjtime:
9069 {
9070 struct timex htx, *phtx = &htx;
9071
9072 if (target_to_host_timex(phtx, arg2) != 0) {
9073 return -TARGET_EFAULT;
9074 }
9075 ret = get_errno(clock_adjtime(arg1, phtx));
9076 if (!is_error(ret) && phtx) {
9077 if (host_to_target_timex(arg2, phtx) != 0) {
9078 return -TARGET_EFAULT;
9079 }
9080 }
9081 }
9082 return ret;
9083 #endif
9084 case TARGET_NR_getpgid:
9085 return get_errno(getpgid(arg1));
9086 case TARGET_NR_fchdir:
9087 return get_errno(fchdir(arg1));
9088 case TARGET_NR_personality:
9089 return get_errno(personality(arg1));
9090 #ifdef TARGET_NR__llseek /* Not on alpha */
9091 case TARGET_NR__llseek:
9092 {
9093 int64_t res;
9094 #if !defined(__NR_llseek)
9095 res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5);
9096 if (res == -1) {
9097 ret = get_errno(res);
9098 } else {
9099 ret = 0;
9100 }
9101 #else
9102 ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
9103 #endif
9104 if ((ret == 0) && put_user_s64(res, arg4)) {
9105 return -TARGET_EFAULT;
9106 }
9107 }
9108 return ret;
9109 #endif
9110 #ifdef TARGET_NR_getdents
9111 case TARGET_NR_getdents:
9112 #ifdef EMULATE_GETDENTS_WITH_GETDENTS
9113 #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
9114 {
9115 struct target_dirent *target_dirp;
9116 struct linux_dirent *dirp;
9117 abi_long count = arg3;
9118
9119 dirp = g_try_malloc(count);
9120 if (!dirp) {
9121 return -TARGET_ENOMEM;
9122 }
9123
9124 ret = get_errno(sys_getdents(arg1, dirp, count));
9125 if (!is_error(ret)) {
9126 struct linux_dirent *de;
9127 struct target_dirent *tde;
9128 int len = ret;
9129 int reclen, treclen;
9130 int count1, tnamelen;
9131
9132 count1 = 0;
9133 de = dirp;
9134 if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9135 return -TARGET_EFAULT;
9136 tde = target_dirp;
9137 while (len > 0) {
9138 reclen = de->d_reclen;
9139 tnamelen = reclen - offsetof(struct linux_dirent, d_name);
9140 assert(tnamelen >= 0);
9141 treclen = tnamelen + offsetof(struct target_dirent, d_name);
9142 assert(count1 + treclen <= count);
9143 tde->d_reclen = tswap16(treclen);
9144 tde->d_ino = tswapal(de->d_ino);
9145 tde->d_off = tswapal(de->d_off);
9146 memcpy(tde->d_name, de->d_name, tnamelen);
9147 de = (struct linux_dirent *)((char *)de + reclen);
9148 len -= reclen;
9149 tde = (struct target_dirent *)((char *)tde + treclen);
9150 count1 += treclen;
9151 }
9152 ret = count1;
9153 unlock_user(target_dirp, arg2, ret);
9154 }
9155 g_free(dirp);
9156 }
9157 #else
9158 {
9159 struct linux_dirent *dirp;
9160 abi_long count = arg3;
9161
9162 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9163 return -TARGET_EFAULT;
9164 ret = get_errno(sys_getdents(arg1, dirp, count));
9165 if (!is_error(ret)) {
9166 struct linux_dirent *de;
9167 int len = ret;
9168 int reclen;
9169 de = dirp;
9170 while (len > 0) {
9171 reclen = de->d_reclen;
9172 if (reclen > len)
9173 break;
9174 de->d_reclen = tswap16(reclen);
9175 tswapls(&de->d_ino);
9176 tswapls(&de->d_off);
9177 de = (struct linux_dirent *)((char *)de + reclen);
9178 len -= reclen;
9179 }
9180 }
9181 unlock_user(dirp, arg2, ret);
9182 }
9183 #endif
9184 #else
9185 /* Implement getdents in terms of getdents64 */
9186 {
9187 struct linux_dirent64 *dirp;
9188 abi_long count = arg3;
9189
9190 dirp = lock_user(VERIFY_WRITE, arg2, count, 0);
9191 if (!dirp) {
9192 return -TARGET_EFAULT;
9193 }
9194 ret = get_errno(sys_getdents64(arg1, dirp, count));
9195 if (!is_error(ret)) {
9196 /* Convert the dirent64 structs to target dirent. We do this
9197 * in-place, since we can guarantee that a target_dirent is no
9198 * larger than a dirent64; however this means we have to be
9199 * careful to read everything before writing in the new format.
9200 */
9201 struct linux_dirent64 *de;
9202 struct target_dirent *tde;
9203 int len = ret;
9204 int tlen = 0;
9205
9206 de = dirp;
9207 tde = (struct target_dirent *)dirp;
9208 while (len > 0) {
9209 int namelen, treclen;
9210 int reclen = de->d_reclen;
9211 uint64_t ino = de->d_ino;
9212 int64_t off = de->d_off;
9213 uint8_t type = de->d_type;
9214
9215 namelen = strlen(de->d_name);
9216 treclen = offsetof(struct target_dirent, d_name)
9217 + namelen + 2;
9218 treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long));
9219
9220 memmove(tde->d_name, de->d_name, namelen + 1);
9221 tde->d_ino = tswapal(ino);
9222 tde->d_off = tswapal(off);
9223 tde->d_reclen = tswap16(treclen);
9224 /* The target_dirent type is in what was formerly a padding
9225 * byte at the end of the structure:
9226 */
9227 *(((char *)tde) + treclen - 1) = type;
9228
9229 de = (struct linux_dirent64 *)((char *)de + reclen);
9230 tde = (struct target_dirent *)((char *)tde + treclen);
9231 len -= reclen;
9232 tlen += treclen;
9233 }
9234 ret = tlen;
9235 }
9236 unlock_user(dirp, arg2, ret);
9237 }
9238 #endif
9239 return ret;
9240 #endif /* TARGET_NR_getdents */
9241 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
9242 case TARGET_NR_getdents64:
9243 {
9244 struct linux_dirent64 *dirp;
9245 abi_long count = arg3;
9246 if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0)))
9247 return -TARGET_EFAULT;
9248 ret = get_errno(sys_getdents64(arg1, dirp, count));
9249 if (!is_error(ret)) {
9250 struct linux_dirent64 *de;
9251 int len = ret;
9252 int reclen;
9253 de = dirp;
9254 while (len > 0) {
9255 reclen = de->d_reclen;
9256 if (reclen > len)
9257 break;
9258 de->d_reclen = tswap16(reclen);
9259 tswap64s((uint64_t *)&de->d_ino);
9260 tswap64s((uint64_t *)&de->d_off);
9261 de = (struct linux_dirent64 *)((char *)de + reclen);
9262 len -= reclen;
9263 }
9264 }
9265 unlock_user(dirp, arg2, ret);
9266 }
9267 return ret;
9268 #endif /* TARGET_NR_getdents64 */
9269 #if defined(TARGET_NR__newselect)
9270 case TARGET_NR__newselect:
9271 return do_select(arg1, arg2, arg3, arg4, arg5);
9272 #endif
9273 #if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll)
9274 # ifdef TARGET_NR_poll
9275 case TARGET_NR_poll:
9276 # endif
9277 # ifdef TARGET_NR_ppoll
9278 case TARGET_NR_ppoll:
9279 # endif
9280 {
9281 struct target_pollfd *target_pfd;
9282 unsigned int nfds = arg2;
9283 struct pollfd *pfd;
9284 unsigned int i;
9285
9286 pfd = NULL;
9287 target_pfd = NULL;
9288 if (nfds) {
9289 if (nfds > (INT_MAX / sizeof(struct target_pollfd))) {
9290 return -TARGET_EINVAL;
9291 }
9292
9293 target_pfd = lock_user(VERIFY_WRITE, arg1,
9294 sizeof(struct target_pollfd) * nfds, 1);
9295 if (!target_pfd) {
9296 return -TARGET_EFAULT;
9297 }
9298
9299 pfd = alloca(sizeof(struct pollfd) * nfds);
9300 for (i = 0; i < nfds; i++) {
9301 pfd[i].fd = tswap32(target_pfd[i].fd);
9302 pfd[i].events = tswap16(target_pfd[i].events);
9303 }
9304 }
9305
9306 switch (num) {
9307 # ifdef TARGET_NR_ppoll
9308 case TARGET_NR_ppoll:
9309 {
9310 struct timespec _timeout_ts, *timeout_ts = &_timeout_ts;
9311 target_sigset_t *target_set;
9312 sigset_t _set, *set = &_set;
9313
9314 if (arg3) {
9315 if (target_to_host_timespec(timeout_ts, arg3)) {
9316 unlock_user(target_pfd, arg1, 0);
9317 return -TARGET_EFAULT;
9318 }
9319 } else {
9320 timeout_ts = NULL;
9321 }
9322
9323 if (arg4) {
9324 if (arg5 != sizeof(target_sigset_t)) {
9325 unlock_user(target_pfd, arg1, 0);
9326 return -TARGET_EINVAL;
9327 }
9328
9329 target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1);
9330 if (!target_set) {
9331 unlock_user(target_pfd, arg1, 0);
9332 return -TARGET_EFAULT;
9333 }
9334 target_to_host_sigset(set, target_set);
9335 } else {
9336 set = NULL;
9337 }
9338
9339 ret = get_errno(safe_ppoll(pfd, nfds, timeout_ts,
9340 set, SIGSET_T_SIZE));
9341
9342 if (!is_error(ret) && arg3) {
9343 host_to_target_timespec(arg3, timeout_ts);
9344 }
9345 if (arg4) {
9346 unlock_user(target_set, arg4, 0);
9347 }
9348 break;
9349 }
9350 # endif
9351 # ifdef TARGET_NR_poll
9352 case TARGET_NR_poll:
9353 {
9354 struct timespec ts, *pts;
9355
9356 if (arg3 >= 0) {
9357 /* Convert ms to secs, ns */
9358 ts.tv_sec = arg3 / 1000;
9359 ts.tv_nsec = (arg3 % 1000) * 1000000LL;
9360 pts = &ts;
9361 } else {
9362 /* -ve poll() timeout means "infinite" */
9363 pts = NULL;
9364 }
9365 ret = get_errno(safe_ppoll(pfd, nfds, pts, NULL, 0));
9366 break;
9367 }
9368 # endif
9369 default:
9370 g_assert_not_reached();
9371 }
9372
9373 if (!is_error(ret)) {
9374 for(i = 0; i < nfds; i++) {
9375 target_pfd[i].revents = tswap16(pfd[i].revents);
9376 }
9377 }
9378 unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds);
9379 }
9380 return ret;
9381 #endif
9382 case TARGET_NR_flock:
9383 /* NOTE: the flock constant seems to be the same for every
9384 Linux platform */
9385 return get_errno(safe_flock(arg1, arg2));
9386 case TARGET_NR_readv:
9387 {
9388 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
9389 if (vec != NULL) {
9390 ret = get_errno(safe_readv(arg1, vec, arg3));
9391 unlock_iovec(vec, arg2, arg3, 1);
9392 } else {
9393 ret = -host_to_target_errno(errno);
9394 }
9395 }
9396 return ret;
9397 case TARGET_NR_writev:
9398 {
9399 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
9400 if (vec != NULL) {
9401 ret = get_errno(safe_writev(arg1, vec, arg3));
9402 unlock_iovec(vec, arg2, arg3, 0);
9403 } else {
9404 ret = -host_to_target_errno(errno);
9405 }
9406 }
9407 return ret;
9408 #if defined(TARGET_NR_preadv)
9409 case TARGET_NR_preadv:
9410 {
9411 struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0);
9412 if (vec != NULL) {
9413 unsigned long low, high;
9414
9415 target_to_host_low_high(arg4, arg5, &low, &high);
9416 ret = get_errno(safe_preadv(arg1, vec, arg3, low, high));
9417 unlock_iovec(vec, arg2, arg3, 1);
9418 } else {
9419 ret = -host_to_target_errno(errno);
9420 }
9421 }
9422 return ret;
9423 #endif
9424 #if defined(TARGET_NR_pwritev)
9425 case TARGET_NR_pwritev:
9426 {
9427 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
9428 if (vec != NULL) {
9429 unsigned long low, high;
9430
9431 target_to_host_low_high(arg4, arg5, &low, &high);
9432 ret = get_errno(safe_pwritev(arg1, vec, arg3, low, high));
9433 unlock_iovec(vec, arg2, arg3, 0);
9434 } else {
9435 ret = -host_to_target_errno(errno);
9436 }
9437 }
9438 return ret;
9439 #endif
9440 case TARGET_NR_getsid:
9441 return get_errno(getsid(arg1));
9442 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
9443 case TARGET_NR_fdatasync:
9444 return get_errno(fdatasync(arg1));
9445 #endif
9446 #ifdef TARGET_NR__sysctl
9447 case TARGET_NR__sysctl:
9448 /* We don't implement this, but ENOTDIR is always a safe
9449 return value. */
9450 return -TARGET_ENOTDIR;
9451 #endif
9452 case TARGET_NR_sched_getaffinity:
9453 {
9454 unsigned int mask_size;
9455 unsigned long *mask;
9456
9457 /*
9458 * sched_getaffinity needs multiples of ulong, so need to take
9459 * care of mismatches between target ulong and host ulong sizes.
9460 */
9461 if (arg2 & (sizeof(abi_ulong) - 1)) {
9462 return -TARGET_EINVAL;
9463 }
9464 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
9465
9466 mask = alloca(mask_size);
9467 memset(mask, 0, mask_size);
9468 ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
9469
9470 if (!is_error(ret)) {
9471 if (ret > arg2) {
9472 /* More data returned than the caller's buffer will fit.
9473 * This only happens if sizeof(abi_long) < sizeof(long)
9474 * and the caller passed us a buffer holding an odd number
9475 * of abi_longs. If the host kernel is actually using the
9476 * extra 4 bytes then fail EINVAL; otherwise we can just
9477 * ignore them and only copy the interesting part.
9478 */
9479 int numcpus = sysconf(_SC_NPROCESSORS_CONF);
9480 if (numcpus > arg2 * 8) {
9481 return -TARGET_EINVAL;
9482 }
9483 ret = arg2;
9484 }
9485
9486 if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) {
9487 return -TARGET_EFAULT;
9488 }
9489 }
9490 }
9491 return ret;
9492 case TARGET_NR_sched_setaffinity:
9493 {
9494 unsigned int mask_size;
9495 unsigned long *mask;
9496
9497 /*
9498 * sched_setaffinity needs multiples of ulong, so need to take
9499 * care of mismatches between target ulong and host ulong sizes.
9500 */
9501 if (arg2 & (sizeof(abi_ulong) - 1)) {
9502 return -TARGET_EINVAL;
9503 }
9504 mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
9505 mask = alloca(mask_size);
9506
9507 ret = target_to_host_cpu_mask(mask, mask_size, arg3, arg2);
9508 if (ret) {
9509 return ret;
9510 }
9511
9512 return get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
9513 }
9514 case TARGET_NR_getcpu:
9515 {
9516 unsigned cpu, node;
9517 ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
9518 arg2 ? &node : NULL,
9519 NULL));
9520 if (is_error(ret)) {
9521 return ret;
9522 }
9523 if (arg1 && put_user_u32(cpu, arg1)) {
9524 return -TARGET_EFAULT;
9525 }
9526 if (arg2 && put_user_u32(node, arg2)) {
9527 return -TARGET_EFAULT;
9528 }
9529 }
9530 return ret;
9531 case TARGET_NR_sched_setparam:
9532 {
9533 struct sched_param *target_schp;
9534 struct sched_param schp;
9535
9536 if (arg2 == 0) {
9537 return -TARGET_EINVAL;
9538 }
9539 if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1))
9540 return -TARGET_EFAULT;
9541 schp.sched_priority = tswap32(target_schp->sched_priority);
9542 unlock_user_struct(target_schp, arg2, 0);
9543 return get_errno(sched_setparam(arg1, &schp));
9544 }
9545 case TARGET_NR_sched_getparam:
9546 {
9547 struct sched_param *target_schp;
9548 struct sched_param schp;
9549
9550 if (arg2 == 0) {
9551 return -TARGET_EINVAL;
9552 }
9553 ret = get_errno(sched_getparam(arg1, &schp));
9554 if (!is_error(ret)) {
9555 if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0))
9556 return -TARGET_EFAULT;
9557 target_schp->sched_priority = tswap32(schp.sched_priority);
9558 unlock_user_struct(target_schp, arg2, 1);
9559 }
9560 }
9561 return ret;
9562 case TARGET_NR_sched_setscheduler:
9563 {
9564 struct sched_param *target_schp;
9565 struct sched_param schp;
9566 if (arg3 == 0) {
9567 return -TARGET_EINVAL;
9568 }
9569 if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1))
9570 return -TARGET_EFAULT;
9571 schp.sched_priority = tswap32(target_schp->sched_priority);
9572 unlock_user_struct(target_schp, arg3, 0);
9573 return get_errno(sched_setscheduler(arg1, arg2, &schp));
9574 }
9575 case TARGET_NR_sched_getscheduler:
9576 return get_errno(sched_getscheduler(arg1));
9577 case TARGET_NR_sched_yield:
9578 return get_errno(sched_yield());
9579 case TARGET_NR_sched_get_priority_max:
9580 return get_errno(sched_get_priority_max(arg1));
9581 case TARGET_NR_sched_get_priority_min:
9582 return get_errno(sched_get_priority_min(arg1));
9583 case TARGET_NR_sched_rr_get_interval:
9584 {
9585 struct timespec ts;
9586 ret = get_errno(sched_rr_get_interval(arg1, &ts));
9587 if (!is_error(ret)) {
9588 ret = host_to_target_timespec(arg2, &ts);
9589 }
9590 }
9591 return ret;
9592 case TARGET_NR_nanosleep:
9593 {
9594 struct timespec req, rem;
9595 target_to_host_timespec(&req, arg1);
9596 ret = get_errno(safe_nanosleep(&req, &rem));
9597 if (is_error(ret) && arg2) {
9598 host_to_target_timespec(arg2, &rem);
9599 }
9600 }
9601 return ret;
9602 case TARGET_NR_prctl:
9603 switch (arg1) {
9604 case PR_GET_PDEATHSIG:
9605 {
9606 int deathsig;
9607 ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
9608 if (!is_error(ret) && arg2
9609 && put_user_ual(deathsig, arg2)) {
9610 return -TARGET_EFAULT;
9611 }
9612 return ret;
9613 }
9614 #ifdef PR_GET_NAME
9615 case PR_GET_NAME:
9616 {
9617 void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
9618 if (!name) {
9619 return -TARGET_EFAULT;
9620 }
9621 ret = get_errno(prctl(arg1, (unsigned long)name,
9622 arg3, arg4, arg5));
9623 unlock_user(name, arg2, 16);
9624 return ret;
9625 }
9626 case PR_SET_NAME:
9627 {
9628 void *name = lock_user(VERIFY_READ, arg2, 16, 1);
9629 if (!name) {
9630 return -TARGET_EFAULT;
9631 }
9632 ret = get_errno(prctl(arg1, (unsigned long)name,
9633 arg3, arg4, arg5));
9634 unlock_user(name, arg2, 0);
9635 return ret;
9636 }
9637 #endif
9638 #ifdef TARGET_MIPS
9639 case TARGET_PR_GET_FP_MODE:
9640 {
9641 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
9642 ret = 0;
9643 if (env->CP0_Status & (1 << CP0St_FR)) {
9644 ret |= TARGET_PR_FP_MODE_FR;
9645 }
9646 if (env->CP0_Config5 & (1 << CP0C5_FRE)) {
9647 ret |= TARGET_PR_FP_MODE_FRE;
9648 }
9649 return ret;
9650 }
9651 case TARGET_PR_SET_FP_MODE:
9652 {
9653 CPUMIPSState *env = ((CPUMIPSState *)cpu_env);
9654 bool old_fr = env->CP0_Status & (1 << CP0St_FR);
9655 bool old_fre = env->CP0_Config5 & (1 << CP0C5_FRE);
9656 bool new_fr = arg2 & TARGET_PR_FP_MODE_FR;
9657 bool new_fre = arg2 & TARGET_PR_FP_MODE_FRE;
9658
9659 const unsigned int known_bits = TARGET_PR_FP_MODE_FR |
9660 TARGET_PR_FP_MODE_FRE;
9661
9662 /* If nothing to change, return right away, successfully. */
9663 if (old_fr == new_fr && old_fre == new_fre) {
9664 return 0;
9665 }
9666 /* Check the value is valid */
9667 if (arg2 & ~known_bits) {
9668 return -TARGET_EOPNOTSUPP;
9669 }
9670 /* Setting FRE without FR is not supported. */
9671 if (new_fre && !new_fr) {
9672 return -TARGET_EOPNOTSUPP;
9673 }
9674 if (new_fr && !(env->active_fpu.fcr0 & (1 << FCR0_F64))) {
9675 /* FR1 is not supported */
9676 return -TARGET_EOPNOTSUPP;
9677 }
9678 if (!new_fr && (env->active_fpu.fcr0 & (1 << FCR0_F64))
9679 && !(env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) {
9680 /* cannot set FR=0 */
9681 return -TARGET_EOPNOTSUPP;
9682 }
9683 if (new_fre && !(env->active_fpu.fcr0 & (1 << FCR0_FREP))) {
9684 /* Cannot set FRE=1 */
9685 return -TARGET_EOPNOTSUPP;
9686 }
9687
9688 int i;
9689 fpr_t *fpr = env->active_fpu.fpr;
9690 for (i = 0; i < 32 ; i += 2) {
9691 if (!old_fr && new_fr) {
9692 fpr[i].w[!FP_ENDIAN_IDX] = fpr[i + 1].w[FP_ENDIAN_IDX];
9693 } else if (old_fr && !new_fr) {
9694 fpr[i + 1].w[FP_ENDIAN_IDX] = fpr[i].w[!FP_ENDIAN_IDX];
9695 }
9696 }
9697
9698 if (new_fr) {
9699 env->CP0_Status |= (1 << CP0St_FR);
9700 env->hflags |= MIPS_HFLAG_F64;
9701 } else {
9702 env->CP0_Status &= ~(1 << CP0St_FR);
9703 env->hflags &= ~MIPS_HFLAG_F64;
9704 }
9705 if (new_fre) {
9706 env->CP0_Config5 |= (1 << CP0C5_FRE);
9707 if (env->active_fpu.fcr0 & (1 << FCR0_FREP)) {
9708 env->hflags |= MIPS_HFLAG_FRE;
9709 }
9710 } else {
9711 env->CP0_Config5 &= ~(1 << CP0C5_FRE);
9712 env->hflags &= ~MIPS_HFLAG_FRE;
9713 }
9714
9715 return 0;
9716 }
9717 #endif /* MIPS */
9718 #ifdef TARGET_AARCH64
9719 case TARGET_PR_SVE_SET_VL:
9720 /*
9721 * We cannot support either PR_SVE_SET_VL_ONEXEC or
9722 * PR_SVE_VL_INHERIT. Note the kernel definition
9723 * of sve_vl_valid allows for VQ=512, i.e. VL=8192,
9724 * even though the current architectural maximum is VQ=16.
9725 */
9726 ret = -TARGET_EINVAL;
9727 if (cpu_isar_feature(aa64_sve, arm_env_get_cpu(cpu_env))
9728 && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
9729 CPUARMState *env = cpu_env;
9730 ARMCPU *cpu = arm_env_get_cpu(env);
9731 uint32_t vq, old_vq;
9732
9733 old_vq = (env->vfp.zcr_el[1] & 0xf) + 1;
9734 vq = MAX(arg2 / 16, 1);
9735 vq = MIN(vq, cpu->sve_max_vq);
9736
9737 if (vq < old_vq) {
9738 aarch64_sve_narrow_vq(env, vq);
9739 }
9740 env->vfp.zcr_el[1] = vq - 1;
9741 ret = vq * 16;
9742 }
9743 return ret;
9744 case TARGET_PR_SVE_GET_VL:
9745 ret = -TARGET_EINVAL;
9746 {
9747 ARMCPU *cpu = arm_env_get_cpu(cpu_env);
9748 if (cpu_isar_feature(aa64_sve, cpu)) {
9749 ret = ((cpu->env.vfp.zcr_el[1] & 0xf) + 1) * 16;
9750 }
9751 }
9752 return ret;
9753 case TARGET_PR_PAC_RESET_KEYS:
9754 {
9755 CPUARMState *env = cpu_env;
9756 ARMCPU *cpu = arm_env_get_cpu(env);
9757
9758 if (arg3 || arg4 || arg5) {
9759 return -TARGET_EINVAL;
9760 }
9761 if (cpu_isar_feature(aa64_pauth, cpu)) {
9762 int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY |
9763 TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY |
9764 TARGET_PR_PAC_APGAKEY);
9765 if (arg2 == 0) {
9766 arg2 = all;
9767 } else if (arg2 & ~all) {
9768 return -TARGET_EINVAL;
9769 }
9770 if (arg2 & TARGET_PR_PAC_APIAKEY) {
9771 arm_init_pauth_key(&env->apia_key);
9772 }
9773 if (arg2 & TARGET_PR_PAC_APIBKEY) {
9774 arm_init_pauth_key(&env->apib_key);
9775 }
9776 if (arg2 & TARGET_PR_PAC_APDAKEY) {
9777 arm_init_pauth_key(&env->apda_key);
9778 }
9779 if (arg2 & TARGET_PR_PAC_APDBKEY) {
9780 arm_init_pauth_key(&env->apdb_key);
9781 }
9782 if (arg2 & TARGET_PR_PAC_APGAKEY) {
9783 arm_init_pauth_key(&env->apga_key);
9784 }
9785 return 0;
9786 }
9787 }
9788 return -TARGET_EINVAL;
9789 #endif /* AARCH64 */
9790 case PR_GET_SECCOMP:
9791 case PR_SET_SECCOMP:
9792 /* Disable seccomp to prevent the target disabling syscalls we
9793 * need. */
9794 return -TARGET_EINVAL;
9795 default:
9796 /* Most prctl options have no pointer arguments */
9797 return get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
9798 }
9799 break;
9800 #ifdef TARGET_NR_arch_prctl
9801 case TARGET_NR_arch_prctl:
9802 #if defined(TARGET_I386) && !defined(TARGET_ABI32)
9803 return do_arch_prctl(cpu_env, arg1, arg2);
9804 #else
9805 #error unreachable
9806 #endif
9807 #endif
9808 #ifdef TARGET_NR_pread64
9809 case TARGET_NR_pread64:
9810 if (regpairs_aligned(cpu_env, num)) {
9811 arg4 = arg5;
9812 arg5 = arg6;
9813 }
9814 if (arg2 == 0 && arg3 == 0) {
9815 /* Special-case NULL buffer and zero length, which should succeed */
9816 p = 0;
9817 } else {
9818 p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
9819 if (!p) {
9820 return -TARGET_EFAULT;
9821 }
9822 }
9823 ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
9824 unlock_user(p, arg2, ret);
9825 return ret;
9826 case TARGET_NR_pwrite64:
9827 if (regpairs_aligned(cpu_env, num)) {
9828 arg4 = arg5;
9829 arg5 = arg6;
9830 }
9831 if (arg2 == 0 && arg3 == 0) {
9832 /* Special-case NULL buffer and zero length, which should succeed */
9833 p = 0;
9834 } else {
9835 p = lock_user(VERIFY_READ, arg2, arg3, 1);
9836 if (!p) {
9837 return -TARGET_EFAULT;
9838 }
9839 }
9840 ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
9841 unlock_user(p, arg2, 0);
9842 return ret;
9843 #endif
9844 case TARGET_NR_getcwd:
9845 if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
9846 return -TARGET_EFAULT;
9847 ret = get_errno(sys_getcwd1(p, arg2));
9848 unlock_user(p, arg1, ret);
9849 return ret;
9850 case TARGET_NR_capget:
9851 case TARGET_NR_capset:
9852 {
9853 struct target_user_cap_header *target_header;
9854 struct target_user_cap_data *target_data = NULL;
9855 struct __user_cap_header_struct header;
9856 struct __user_cap_data_struct data[2];
9857 struct __user_cap_data_struct *dataptr = NULL;
9858 int i, target_datalen;
9859 int data_items = 1;
9860
9861 if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) {
9862 return -TARGET_EFAULT;
9863 }
9864 header.version = tswap32(target_header->version);
9865 header.pid = tswap32(target_header->pid);
9866
9867 if (header.version != _LINUX_CAPABILITY_VERSION) {
9868 /* Version 2 and up takes pointer to two user_data structs */
9869 data_items = 2;
9870 }
9871
9872 target_datalen = sizeof(*target_data) * data_items;
9873
9874 if (arg2) {
9875 if (num == TARGET_NR_capget) {
9876 target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0);
9877 } else {
9878 target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1);
9879 }
9880 if (!target_data) {
9881 unlock_user_struct(target_header, arg1, 0);
9882 return -TARGET_EFAULT;
9883 }
9884
9885 if (num == TARGET_NR_capset) {
9886 for (i = 0; i < data_items; i++) {
9887 data[i].effective = tswap32(target_data[i].effective);
9888 data[i].permitted = tswap32(target_data[i].permitted);
9889 data[i].inheritable = tswap32(target_data[i].inheritable);
9890 }
9891 }
9892
9893 dataptr = data;
9894 }
9895
9896 if (num == TARGET_NR_capget) {
9897 ret = get_errno(capget(&header, dataptr));
9898 } else {
9899 ret = get_errno(capset(&header, dataptr));
9900 }
9901
9902 /* The kernel always updates version for both capget and capset */
9903 target_header->version = tswap32(header.version);
9904 unlock_user_struct(target_header, arg1, 1);
9905
9906 if (arg2) {
9907 if (num == TARGET_NR_capget) {
9908 for (i = 0; i < data_items; i++) {
9909 target_data[i].effective = tswap32(data[i].effective);
9910 target_data[i].permitted = tswap32(data[i].permitted);
9911 target_data[i].inheritable = tswap32(data[i].inheritable);
9912 }
9913 unlock_user(target_data, arg2, target_datalen);
9914 } else {
9915 unlock_user(target_data, arg2, 0);
9916 }
9917 }
9918 return ret;
9919 }
9920 case TARGET_NR_sigaltstack:
9921 return do_sigaltstack(arg1, arg2,
9922 get_sp_from_cpustate((CPUArchState *)cpu_env));
9923
9924 #ifdef CONFIG_SENDFILE
9925 #ifdef TARGET_NR_sendfile
9926 case TARGET_NR_sendfile:
9927 {
9928 off_t *offp = NULL;
9929 off_t off;
9930 if (arg3) {
9931 ret = get_user_sal(off, arg3);
9932 if (is_error(ret)) {
9933 return ret;
9934 }
9935 offp = &off;
9936 }
9937 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
9938 if (!is_error(ret) && arg3) {
9939 abi_long ret2 = put_user_sal(off, arg3);
9940 if (is_error(ret2)) {
9941 ret = ret2;
9942 }
9943 }
9944 return ret;
9945 }
9946 #endif
9947 #ifdef TARGET_NR_sendfile64
9948 case TARGET_NR_sendfile64:
9949 {
9950 off_t *offp = NULL;
9951 off_t off;
9952 if (arg3) {
9953 ret = get_user_s64(off, arg3);
9954 if (is_error(ret)) {
9955 return ret;
9956 }
9957 offp = &off;
9958 }
9959 ret = get_errno(sendfile(arg1, arg2, offp, arg4));
9960 if (!is_error(ret) && arg3) {
9961 abi_long ret2 = put_user_s64(off, arg3);
9962 if (is_error(ret2)) {
9963 ret = ret2;
9964 }
9965 }
9966 return ret;
9967 }
9968 #endif
9969 #endif
9970 #ifdef TARGET_NR_vfork
9971 case TARGET_NR_vfork:
9972 return get_errno(do_fork(cpu_env,
9973 CLONE_VFORK | CLONE_VM | TARGET_SIGCHLD,
9974 0, 0, 0, 0));
9975 #endif
9976 #ifdef TARGET_NR_ugetrlimit
9977 case TARGET_NR_ugetrlimit:
9978 {
9979 struct rlimit rlim;
9980 int resource = target_to_host_resource(arg1);
9981 ret = get_errno(getrlimit(resource, &rlim));
9982 if (!is_error(ret)) {
9983 struct target_rlimit *target_rlim;
9984 if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0))
9985 return -TARGET_EFAULT;
9986 target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur);
9987 target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max);
9988 unlock_user_struct(target_rlim, arg2, 1);
9989 }
9990 return ret;
9991 }
9992 #endif
9993 #ifdef TARGET_NR_truncate64
9994 case TARGET_NR_truncate64:
9995 if (!(p = lock_user_string(arg1)))
9996 return -TARGET_EFAULT;
9997 ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
9998 unlock_user(p, arg1, 0);
9999 return ret;
10000 #endif
10001 #ifdef TARGET_NR_ftruncate64
10002 case TARGET_NR_ftruncate64:
10003 return target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
10004 #endif
10005 #ifdef TARGET_NR_stat64
10006 case TARGET_NR_stat64:
10007 if (!(p = lock_user_string(arg1))) {
10008 return -TARGET_EFAULT;
10009 }
10010 ret = get_errno(stat(path(p), &st));
10011 unlock_user(p, arg1, 0);
10012 if (!is_error(ret))
10013 ret = host_to_target_stat64(cpu_env, arg2, &st);
10014 return ret;
10015 #endif
10016 #ifdef TARGET_NR_lstat64
10017 case TARGET_NR_lstat64:
10018 if (!(p = lock_user_string(arg1))) {
10019 return -TARGET_EFAULT;
10020 }
10021 ret = get_errno(lstat(path(p), &st));
10022 unlock_user(p, arg1, 0);
10023 if (!is_error(ret))
10024 ret = host_to_target_stat64(cpu_env, arg2, &st);
10025 return ret;
10026 #endif
10027 #ifdef TARGET_NR_fstat64
10028 case TARGET_NR_fstat64:
10029 ret = get_errno(fstat(arg1, &st));
10030 if (!is_error(ret))
10031 ret = host_to_target_stat64(cpu_env, arg2, &st);
10032 return ret;
10033 #endif
10034 #if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat))
10035 #ifdef TARGET_NR_fstatat64
10036 case TARGET_NR_fstatat64:
10037 #endif
10038 #ifdef TARGET_NR_newfstatat
10039 case TARGET_NR_newfstatat:
10040 #endif
10041 if (!(p = lock_user_string(arg2))) {
10042 return -TARGET_EFAULT;
10043 }
10044 ret = get_errno(fstatat(arg1, path(p), &st, arg4));
10045 unlock_user(p, arg2, 0);
10046 if (!is_error(ret))
10047 ret = host_to_target_stat64(cpu_env, arg3, &st);
10048 return ret;
10049 #endif
10050 #ifdef TARGET_NR_lchown
10051 case TARGET_NR_lchown:
10052 if (!(p = lock_user_string(arg1)))
10053 return -TARGET_EFAULT;
10054 ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
10055 unlock_user(p, arg1, 0);
10056 return ret;
10057 #endif
10058 #ifdef TARGET_NR_getuid
10059 case TARGET_NR_getuid:
10060 return get_errno(high2lowuid(getuid()));
10061 #endif
10062 #ifdef TARGET_NR_getgid
10063 case TARGET_NR_getgid:
10064 return get_errno(high2lowgid(getgid()));
10065 #endif
10066 #ifdef TARGET_NR_geteuid
10067 case TARGET_NR_geteuid:
10068 return get_errno(high2lowuid(geteuid()));
10069 #endif
10070 #ifdef TARGET_NR_getegid
10071 case TARGET_NR_getegid:
10072 return get_errno(high2lowgid(getegid()));
10073 #endif
10074 case TARGET_NR_setreuid:
10075 return get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
10076 case TARGET_NR_setregid:
10077 return get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
10078 case TARGET_NR_getgroups:
10079 {
10080 int gidsetsize = arg1;
10081 target_id *target_grouplist;
10082 gid_t *grouplist;
10083 int i;
10084
10085 grouplist = alloca(gidsetsize * sizeof(gid_t));
10086 ret = get_errno(getgroups(gidsetsize, grouplist));
10087 if (gidsetsize == 0)
10088 return ret;
10089 if (!is_error(ret)) {
10090 target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0);
10091 if (!target_grouplist)
10092 return -TARGET_EFAULT;
10093 for(i = 0;i < ret; i++)
10094 target_grouplist[i] = tswapid(high2lowgid(grouplist[i]));
10095 unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id));
10096 }
10097 }
10098 return ret;
10099 case TARGET_NR_setgroups:
10100 {
10101 int gidsetsize = arg1;
10102 target_id *target_grouplist;
10103 gid_t *grouplist = NULL;
10104 int i;
10105 if (gidsetsize) {
10106 grouplist = alloca(gidsetsize * sizeof(gid_t));
10107 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1);
10108 if (!target_grouplist) {
10109 return -TARGET_EFAULT;
10110 }
10111 for (i = 0; i < gidsetsize; i++) {
10112 grouplist[i] = low2highgid(tswapid(target_grouplist[i]));
10113 }
10114 unlock_user(target_grouplist, arg2, 0);
10115 }
10116 return get_errno(setgroups(gidsetsize, grouplist));
10117 }
10118 case TARGET_NR_fchown:
10119 return get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
10120 #if defined(TARGET_NR_fchownat)
10121 case TARGET_NR_fchownat:
10122 if (!(p = lock_user_string(arg2)))
10123 return -TARGET_EFAULT;
10124 ret = get_errno(fchownat(arg1, p, low2highuid(arg3),
10125 low2highgid(arg4), arg5));
10126 unlock_user(p, arg2, 0);
10127 return ret;
10128 #endif
10129 #ifdef TARGET_NR_setresuid
10130 case TARGET_NR_setresuid:
10131 return get_errno(sys_setresuid(low2highuid(arg1),
10132 low2highuid(arg2),
10133 low2highuid(arg3)));
10134 #endif
10135 #ifdef TARGET_NR_getresuid
10136 case TARGET_NR_getresuid:
10137 {
10138 uid_t ruid, euid, suid;
10139 ret = get_errno(getresuid(&ruid, &euid, &suid));
10140 if (!is_error(ret)) {
10141 if (put_user_id(high2lowuid(ruid), arg1)
10142 || put_user_id(high2lowuid(euid), arg2)
10143 || put_user_id(high2lowuid(suid), arg3))
10144 return -TARGET_EFAULT;
10145 }
10146 }
10147 return ret;
10148 #endif
10149 #ifdef TARGET_NR_getresgid
10150 case TARGET_NR_setresgid:
10151 return get_errno(sys_setresgid(low2highgid(arg1),
10152 low2highgid(arg2),
10153 low2highgid(arg3)));
10154 #endif
10155 #ifdef TARGET_NR_getresgid
10156 case TARGET_NR_getresgid:
10157 {
10158 gid_t rgid, egid, sgid;
10159 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10160 if (!is_error(ret)) {
10161 if (put_user_id(high2lowgid(rgid), arg1)
10162 || put_user_id(high2lowgid(egid), arg2)
10163 || put_user_id(high2lowgid(sgid), arg3))
10164 return -TARGET_EFAULT;
10165 }
10166 }
10167 return ret;
10168 #endif
10169 #ifdef TARGET_NR_chown
10170 case TARGET_NR_chown:
10171 if (!(p = lock_user_string(arg1)))
10172 return -TARGET_EFAULT;
10173 ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
10174 unlock_user(p, arg1, 0);
10175 return ret;
10176 #endif
10177 case TARGET_NR_setuid:
10178 return get_errno(sys_setuid(low2highuid(arg1)));
10179 case TARGET_NR_setgid:
10180 return get_errno(sys_setgid(low2highgid(arg1)));
10181 case TARGET_NR_setfsuid:
10182 return get_errno(setfsuid(arg1));
10183 case TARGET_NR_setfsgid:
10184 return get_errno(setfsgid(arg1));
10185
10186 #ifdef TARGET_NR_lchown32
10187 case TARGET_NR_lchown32:
10188 if (!(p = lock_user_string(arg1)))
10189 return -TARGET_EFAULT;
10190 ret = get_errno(lchown(p, arg2, arg3));
10191 unlock_user(p, arg1, 0);
10192 return ret;
10193 #endif
10194 #ifdef TARGET_NR_getuid32
10195 case TARGET_NR_getuid32:
10196 return get_errno(getuid());
10197 #endif
10198
10199 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
10200 /* Alpha specific */
10201 case TARGET_NR_getxuid:
10202 {
10203 uid_t euid;
10204 euid=geteuid();
10205 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
10206 }
10207 return get_errno(getuid());
10208 #endif
10209 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
10210 /* Alpha specific */
10211 case TARGET_NR_getxgid:
10212 {
10213 uid_t egid;
10214 egid=getegid();
10215 ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
10216 }
10217 return get_errno(getgid());
10218 #endif
10219 #if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
10220 /* Alpha specific */
10221 case TARGET_NR_osf_getsysinfo:
10222 ret = -TARGET_EOPNOTSUPP;
10223 switch (arg1) {
10224 case TARGET_GSI_IEEE_FP_CONTROL:
10225 {
10226 uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env);
10227
10228 /* Copied from linux ieee_fpcr_to_swcr. */
10229 swcr = (fpcr >> 35) & SWCR_STATUS_MASK;
10230 swcr |= (fpcr >> 36) & SWCR_MAP_DMZ;
10231 swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV
10232 | SWCR_TRAP_ENABLE_DZE
10233 | SWCR_TRAP_ENABLE_OVF);
10234 swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF
10235 | SWCR_TRAP_ENABLE_INE);
10236 swcr |= (fpcr >> 47) & SWCR_MAP_UMZ;
10237 swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO;
10238
10239 if (put_user_u64 (swcr, arg2))
10240 return -TARGET_EFAULT;
10241 ret = 0;
10242 }
10243 break;
10244
10245 /* case GSI_IEEE_STATE_AT_SIGNAL:
10246 -- Not implemented in linux kernel.
10247 case GSI_UACPROC:
10248 -- Retrieves current unaligned access state; not much used.
10249 case GSI_PROC_TYPE:
10250 -- Retrieves implver information; surely not used.
10251 case GSI_GET_HWRPB:
10252 -- Grabs a copy of the HWRPB; surely not used.
10253 */
10254 }
10255 return ret;
10256 #endif
10257 #if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
10258 /* Alpha specific */
10259 case TARGET_NR_osf_setsysinfo:
10260 ret = -TARGET_EOPNOTSUPP;
10261 switch (arg1) {
10262 case TARGET_SSI_IEEE_FP_CONTROL:
10263 {
10264 uint64_t swcr, fpcr, orig_fpcr;
10265
10266 if (get_user_u64 (swcr, arg2)) {
10267 return -TARGET_EFAULT;
10268 }
10269 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
10270 fpcr = orig_fpcr & FPCR_DYN_MASK;
10271
10272 /* Copied from linux ieee_swcr_to_fpcr. */
10273 fpcr |= (swcr & SWCR_STATUS_MASK) << 35;
10274 fpcr |= (swcr & SWCR_MAP_DMZ) << 36;
10275 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV
10276 | SWCR_TRAP_ENABLE_DZE
10277 | SWCR_TRAP_ENABLE_OVF)) << 48;
10278 fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF
10279 | SWCR_TRAP_ENABLE_INE)) << 57;
10280 fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0);
10281 fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41;
10282
10283 cpu_alpha_store_fpcr(cpu_env, fpcr);
10284 ret = 0;
10285 }
10286 break;
10287
10288 case TARGET_SSI_IEEE_RAISE_EXCEPTION:
10289 {
10290 uint64_t exc, fpcr, orig_fpcr;
10291 int si_code;
10292
10293 if (get_user_u64(exc, arg2)) {
10294 return -TARGET_EFAULT;
10295 }
10296
10297 orig_fpcr = cpu_alpha_load_fpcr(cpu_env);
10298
10299 /* We only add to the exception status here. */
10300 fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35);
10301
10302 cpu_alpha_store_fpcr(cpu_env, fpcr);
10303 ret = 0;
10304
10305 /* Old exceptions are not signaled. */
10306 fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK);
10307
10308 /* If any exceptions set by this call,
10309 and are unmasked, send a signal. */
10310 si_code = 0;
10311 if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) {
10312 si_code = TARGET_FPE_FLTRES;
10313 }
10314 if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) {
10315 si_code = TARGET_FPE_FLTUND;
10316 }
10317 if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) {
10318 si_code = TARGET_FPE_FLTOVF;
10319 }
10320 if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) {
10321 si_code = TARGET_FPE_FLTDIV;
10322 }
10323 if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) {
10324 si_code = TARGET_FPE_FLTINV;
10325 }
10326 if (si_code != 0) {
10327 target_siginfo_t info;
10328 info.si_signo = SIGFPE;
10329 info.si_errno = 0;
10330 info.si_code = si_code;
10331 info._sifields._sigfault._addr
10332 = ((CPUArchState *)cpu_env)->pc;
10333 queue_signal((CPUArchState *)cpu_env, info.si_signo,
10334 QEMU_SI_FAULT, &info);
10335 }
10336 }
10337 break;
10338
10339 /* case SSI_NVPAIRS:
10340 -- Used with SSIN_UACPROC to enable unaligned accesses.
10341 case SSI_IEEE_STATE_AT_SIGNAL:
10342 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
10343 -- Not implemented in linux kernel
10344 */
10345 }
10346 return ret;
10347 #endif
10348 #ifdef TARGET_NR_osf_sigprocmask
10349 /* Alpha specific. */
10350 case TARGET_NR_osf_sigprocmask:
10351 {
10352 abi_ulong mask;
10353 int how;
10354 sigset_t set, oldset;
10355
10356 switch(arg1) {
10357 case TARGET_SIG_BLOCK:
10358 how = SIG_BLOCK;
10359 break;
10360 case TARGET_SIG_UNBLOCK:
10361 how = SIG_UNBLOCK;
10362 break;
10363 case TARGET_SIG_SETMASK:
10364 how = SIG_SETMASK;
10365 break;
10366 default:
10367 return -TARGET_EINVAL;
10368 }
10369 mask = arg2;
10370 target_to_host_old_sigset(&set, &mask);
10371 ret = do_sigprocmask(how, &set, &oldset);
10372 if (!ret) {
10373 host_to_target_old_sigset(&mask, &oldset);
10374 ret = mask;
10375 }
10376 }
10377 return ret;
10378 #endif
10379
10380 #ifdef TARGET_NR_getgid32
10381 case TARGET_NR_getgid32:
10382 return get_errno(getgid());
10383 #endif
10384 #ifdef TARGET_NR_geteuid32
10385 case TARGET_NR_geteuid32:
10386 return get_errno(geteuid());
10387 #endif
10388 #ifdef TARGET_NR_getegid32
10389 case TARGET_NR_getegid32:
10390 return get_errno(getegid());
10391 #endif
10392 #ifdef TARGET_NR_setreuid32
10393 case TARGET_NR_setreuid32:
10394 return get_errno(setreuid(arg1, arg2));
10395 #endif
10396 #ifdef TARGET_NR_setregid32
10397 case TARGET_NR_setregid32:
10398 return get_errno(setregid(arg1, arg2));
10399 #endif
10400 #ifdef TARGET_NR_getgroups32
10401 case TARGET_NR_getgroups32:
10402 {
10403 int gidsetsize = arg1;
10404 uint32_t *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 * 4, 0);
10414 if (!target_grouplist) {
10415 return -TARGET_EFAULT;
10416 }
10417 for(i = 0;i < ret; i++)
10418 target_grouplist[i] = tswap32(grouplist[i]);
10419 unlock_user(target_grouplist, arg2, gidsetsize * 4);
10420 }
10421 }
10422 return ret;
10423 #endif
10424 #ifdef TARGET_NR_setgroups32
10425 case TARGET_NR_setgroups32:
10426 {
10427 int gidsetsize = arg1;
10428 uint32_t *target_grouplist;
10429 gid_t *grouplist;
10430 int i;
10431
10432 grouplist = alloca(gidsetsize * sizeof(gid_t));
10433 target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1);
10434 if (!target_grouplist) {
10435 return -TARGET_EFAULT;
10436 }
10437 for(i = 0;i < gidsetsize; i++)
10438 grouplist[i] = tswap32(target_grouplist[i]);
10439 unlock_user(target_grouplist, arg2, 0);
10440 return get_errno(setgroups(gidsetsize, grouplist));
10441 }
10442 #endif
10443 #ifdef TARGET_NR_fchown32
10444 case TARGET_NR_fchown32:
10445 return get_errno(fchown(arg1, arg2, arg3));
10446 #endif
10447 #ifdef TARGET_NR_setresuid32
10448 case TARGET_NR_setresuid32:
10449 return get_errno(sys_setresuid(arg1, arg2, arg3));
10450 #endif
10451 #ifdef TARGET_NR_getresuid32
10452 case TARGET_NR_getresuid32:
10453 {
10454 uid_t ruid, euid, suid;
10455 ret = get_errno(getresuid(&ruid, &euid, &suid));
10456 if (!is_error(ret)) {
10457 if (put_user_u32(ruid, arg1)
10458 || put_user_u32(euid, arg2)
10459 || put_user_u32(suid, arg3))
10460 return -TARGET_EFAULT;
10461 }
10462 }
10463 return ret;
10464 #endif
10465 #ifdef TARGET_NR_setresgid32
10466 case TARGET_NR_setresgid32:
10467 return get_errno(sys_setresgid(arg1, arg2, arg3));
10468 #endif
10469 #ifdef TARGET_NR_getresgid32
10470 case TARGET_NR_getresgid32:
10471 {
10472 gid_t rgid, egid, sgid;
10473 ret = get_errno(getresgid(&rgid, &egid, &sgid));
10474 if (!is_error(ret)) {
10475 if (put_user_u32(rgid, arg1)
10476 || put_user_u32(egid, arg2)
10477 || put_user_u32(sgid, arg3))
10478 return -TARGET_EFAULT;
10479 }
10480 }
10481 return ret;
10482 #endif
10483 #ifdef TARGET_NR_chown32
10484 case TARGET_NR_chown32:
10485 if (!(p = lock_user_string(arg1)))
10486 return -TARGET_EFAULT;
10487 ret = get_errno(chown(p, arg2, arg3));
10488 unlock_user(p, arg1, 0);
10489 return ret;
10490 #endif
10491 #ifdef TARGET_NR_setuid32
10492 case TARGET_NR_setuid32:
10493 return get_errno(sys_setuid(arg1));
10494 #endif
10495 #ifdef TARGET_NR_setgid32
10496 case TARGET_NR_setgid32:
10497 return get_errno(sys_setgid(arg1));
10498 #endif
10499 #ifdef TARGET_NR_setfsuid32
10500 case TARGET_NR_setfsuid32:
10501 return get_errno(setfsuid(arg1));
10502 #endif
10503 #ifdef TARGET_NR_setfsgid32
10504 case TARGET_NR_setfsgid32:
10505 return get_errno(setfsgid(arg1));
10506 #endif
10507 #ifdef TARGET_NR_mincore
10508 case TARGET_NR_mincore:
10509 {
10510 void *a = lock_user(VERIFY_READ, arg1, arg2, 0);
10511 if (!a) {
10512 return -TARGET_ENOMEM;
10513 }
10514 p = lock_user_string(arg3);
10515 if (!p) {
10516 ret = -TARGET_EFAULT;
10517 } else {
10518 ret = get_errno(mincore(a, arg2, p));
10519 unlock_user(p, arg3, ret);
10520 }
10521 unlock_user(a, arg1, 0);
10522 }
10523 return ret;
10524 #endif
10525 #ifdef TARGET_NR_arm_fadvise64_64
10526 case TARGET_NR_arm_fadvise64_64:
10527 /* arm_fadvise64_64 looks like fadvise64_64 but
10528 * with different argument order: fd, advice, offset, len
10529 * rather than the usual fd, offset, len, advice.
10530 * Note that offset and len are both 64-bit so appear as
10531 * pairs of 32-bit registers.
10532 */
10533 ret = posix_fadvise(arg1, target_offset64(arg3, arg4),
10534 target_offset64(arg5, arg6), arg2);
10535 return -host_to_target_errno(ret);
10536 #endif
10537
10538 #if TARGET_ABI_BITS == 32
10539
10540 #ifdef TARGET_NR_fadvise64_64
10541 case TARGET_NR_fadvise64_64:
10542 #if defined(TARGET_PPC) || defined(TARGET_XTENSA)
10543 /* 6 args: fd, advice, offset (high, low), len (high, low) */
10544 ret = arg2;
10545 arg2 = arg3;
10546 arg3 = arg4;
10547 arg4 = arg5;
10548 arg5 = arg6;
10549 arg6 = ret;
10550 #else
10551 /* 6 args: fd, offset (high, low), len (high, low), advice */
10552 if (regpairs_aligned(cpu_env, num)) {
10553 /* offset is in (3,4), len in (5,6) and advice in 7 */
10554 arg2 = arg3;
10555 arg3 = arg4;
10556 arg4 = arg5;
10557 arg5 = arg6;
10558 arg6 = arg7;
10559 }
10560 #endif
10561 ret = posix_fadvise(arg1, target_offset64(arg2, arg3),
10562 target_offset64(arg4, arg5), arg6);
10563 return -host_to_target_errno(ret);
10564 #endif
10565
10566 #ifdef TARGET_NR_fadvise64
10567 case TARGET_NR_fadvise64:
10568 /* 5 args: fd, offset (high, low), len, advice */
10569 if (regpairs_aligned(cpu_env, num)) {
10570 /* offset is in (3,4), len in 5 and advice in 6 */
10571 arg2 = arg3;
10572 arg3 = arg4;
10573 arg4 = arg5;
10574 arg5 = arg6;
10575 }
10576 ret = posix_fadvise(arg1, target_offset64(arg2, arg3), arg4, arg5);
10577 return -host_to_target_errno(ret);
10578 #endif
10579
10580 #else /* not a 32-bit ABI */
10581 #if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_fadvise64)
10582 #ifdef TARGET_NR_fadvise64_64
10583 case TARGET_NR_fadvise64_64:
10584 #endif
10585 #ifdef TARGET_NR_fadvise64
10586 case TARGET_NR_fadvise64:
10587 #endif
10588 #ifdef TARGET_S390X
10589 switch (arg4) {
10590 case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */
10591 case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */
10592 case 6: arg4 = POSIX_FADV_DONTNEED; break;
10593 case 7: arg4 = POSIX_FADV_NOREUSE; break;
10594 default: break;
10595 }
10596 #endif
10597 return -host_to_target_errno(posix_fadvise(arg1, arg2, arg3, arg4));
10598 #endif
10599 #endif /* end of 64-bit ABI fadvise handling */
10600
10601 #ifdef TARGET_NR_madvise
10602 case TARGET_NR_madvise:
10603 /* A straight passthrough may not be safe because qemu sometimes
10604 turns private file-backed mappings into anonymous mappings.
10605 This will break MADV_DONTNEED.
10606 This is a hint, so ignoring and returning success is ok. */
10607 return 0;
10608 #endif
10609 #if TARGET_ABI_BITS == 32
10610 case TARGET_NR_fcntl64:
10611 {
10612 int cmd;
10613 struct flock64 fl;
10614 from_flock64_fn *copyfrom = copy_from_user_flock64;
10615 to_flock64_fn *copyto = copy_to_user_flock64;
10616
10617 #ifdef TARGET_ARM
10618 if (!((CPUARMState *)cpu_env)->eabi) {
10619 copyfrom = copy_from_user_oabi_flock64;
10620 copyto = copy_to_user_oabi_flock64;
10621 }
10622 #endif
10623
10624 cmd = target_to_host_fcntl_cmd(arg2);
10625 if (cmd == -TARGET_EINVAL) {
10626 return cmd;
10627 }
10628
10629 switch(arg2) {
10630 case TARGET_F_GETLK64:
10631 ret = copyfrom(&fl, arg3);
10632 if (ret) {
10633 break;
10634 }
10635 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
10636 if (ret == 0) {
10637 ret = copyto(arg3, &fl);
10638 }
10639 break;
10640
10641 case TARGET_F_SETLK64:
10642 case TARGET_F_SETLKW64:
10643 ret = copyfrom(&fl, arg3);
10644 if (ret) {
10645 break;
10646 }
10647 ret = get_errno(safe_fcntl(arg1, cmd, &fl));
10648 break;
10649 default:
10650 ret = do_fcntl(arg1, arg2, arg3);
10651 break;
10652 }
10653 return ret;
10654 }
10655 #endif
10656 #ifdef TARGET_NR_cacheflush
10657 case TARGET_NR_cacheflush:
10658 /* self-modifying code is handled automatically, so nothing needed */
10659 return 0;
10660 #endif
10661 #ifdef TARGET_NR_getpagesize
10662 case TARGET_NR_getpagesize:
10663 return TARGET_PAGE_SIZE;
10664 #endif
10665 case TARGET_NR_gettid:
10666 return get_errno(sys_gettid());
10667 #ifdef TARGET_NR_readahead
10668 case TARGET_NR_readahead:
10669 #if TARGET_ABI_BITS == 32
10670 if (regpairs_aligned(cpu_env, num)) {
10671 arg2 = arg3;
10672 arg3 = arg4;
10673 arg4 = arg5;
10674 }
10675 ret = get_errno(readahead(arg1, target_offset64(arg2, arg3) , arg4));
10676 #else
10677 ret = get_errno(readahead(arg1, arg2, arg3));
10678 #endif
10679 return ret;
10680 #endif
10681 #ifdef CONFIG_ATTR
10682 #ifdef TARGET_NR_setxattr
10683 case TARGET_NR_listxattr:
10684 case TARGET_NR_llistxattr:
10685 {
10686 void *p, *b = 0;
10687 if (arg2) {
10688 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10689 if (!b) {
10690 return -TARGET_EFAULT;
10691 }
10692 }
10693 p = lock_user_string(arg1);
10694 if (p) {
10695 if (num == TARGET_NR_listxattr) {
10696 ret = get_errno(listxattr(p, b, arg3));
10697 } else {
10698 ret = get_errno(llistxattr(p, b, arg3));
10699 }
10700 } else {
10701 ret = -TARGET_EFAULT;
10702 }
10703 unlock_user(p, arg1, 0);
10704 unlock_user(b, arg2, arg3);
10705 return ret;
10706 }
10707 case TARGET_NR_flistxattr:
10708 {
10709 void *b = 0;
10710 if (arg2) {
10711 b = lock_user(VERIFY_WRITE, arg2, arg3, 0);
10712 if (!b) {
10713 return -TARGET_EFAULT;
10714 }
10715 }
10716 ret = get_errno(flistxattr(arg1, b, arg3));
10717 unlock_user(b, arg2, arg3);
10718 return ret;
10719 }
10720 case TARGET_NR_setxattr:
10721 case TARGET_NR_lsetxattr:
10722 {
10723 void *p, *n, *v = 0;
10724 if (arg3) {
10725 v = lock_user(VERIFY_READ, arg3, arg4, 1);
10726 if (!v) {
10727 return -TARGET_EFAULT;
10728 }
10729 }
10730 p = lock_user_string(arg1);
10731 n = lock_user_string(arg2);
10732 if (p && n) {
10733 if (num == TARGET_NR_setxattr) {
10734 ret = get_errno(setxattr(p, n, v, arg4, arg5));
10735 } else {
10736 ret = get_errno(lsetxattr(p, n, v, arg4, arg5));
10737 }
10738 } else {
10739 ret = -TARGET_EFAULT;
10740 }
10741 unlock_user(p, arg1, 0);
10742 unlock_user(n, arg2, 0);
10743 unlock_user(v, arg3, 0);
10744 }
10745 return ret;
10746 case TARGET_NR_fsetxattr:
10747 {
10748 void *n, *v = 0;
10749 if (arg3) {
10750 v = lock_user(VERIFY_READ, arg3, arg4, 1);
10751 if (!v) {
10752 return -TARGET_EFAULT;
10753 }
10754 }
10755 n = lock_user_string(arg2);
10756 if (n) {
10757 ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5));
10758 } else {
10759 ret = -TARGET_EFAULT;
10760 }
10761 unlock_user(n, arg2, 0);
10762 unlock_user(v, arg3, 0);
10763 }
10764 return ret;
10765 case TARGET_NR_getxattr:
10766 case TARGET_NR_lgetxattr:
10767 {
10768 void *p, *n, *v = 0;
10769 if (arg3) {
10770 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
10771 if (!v) {
10772 return -TARGET_EFAULT;
10773 }
10774 }
10775 p = lock_user_string(arg1);
10776 n = lock_user_string(arg2);
10777 if (p && n) {
10778 if (num == TARGET_NR_getxattr) {
10779 ret = get_errno(getxattr(p, n, v, arg4));
10780 } else {
10781 ret = get_errno(lgetxattr(p, n, v, arg4));
10782 }
10783 } else {
10784 ret = -TARGET_EFAULT;
10785 }
10786 unlock_user(p, arg1, 0);
10787 unlock_user(n, arg2, 0);
10788 unlock_user(v, arg3, arg4);
10789 }
10790 return ret;
10791 case TARGET_NR_fgetxattr:
10792 {
10793 void *n, *v = 0;
10794 if (arg3) {
10795 v = lock_user(VERIFY_WRITE, arg3, arg4, 0);
10796 if (!v) {
10797 return -TARGET_EFAULT;
10798 }
10799 }
10800 n = lock_user_string(arg2);
10801 if (n) {
10802 ret = get_errno(fgetxattr(arg1, n, v, arg4));
10803 } else {
10804 ret = -TARGET_EFAULT;
10805 }
10806 unlock_user(n, arg2, 0);
10807 unlock_user(v, arg3, arg4);
10808 }
10809 return ret;
10810 case TARGET_NR_removexattr:
10811 case TARGET_NR_lremovexattr:
10812 {
10813 void *p, *n;
10814 p = lock_user_string(arg1);
10815 n = lock_user_string(arg2);
10816 if (p && n) {
10817 if (num == TARGET_NR_removexattr) {
10818 ret = get_errno(removexattr(p, n));
10819 } else {
10820 ret = get_errno(lremovexattr(p, n));
10821 }
10822 } else {
10823 ret = -TARGET_EFAULT;
10824 }
10825 unlock_user(p, arg1, 0);
10826 unlock_user(n, arg2, 0);
10827 }
10828 return ret;
10829 case TARGET_NR_fremovexattr:
10830 {
10831 void *n;
10832 n = lock_user_string(arg2);
10833 if (n) {
10834 ret = get_errno(fremovexattr(arg1, n));
10835 } else {
10836 ret = -TARGET_EFAULT;
10837 }
10838 unlock_user(n, arg2, 0);
10839 }
10840 return ret;
10841 #endif
10842 #endif /* CONFIG_ATTR */
10843 #ifdef TARGET_NR_set_thread_area
10844 case TARGET_NR_set_thread_area:
10845 #if defined(TARGET_MIPS)
10846 ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1;
10847 return 0;
10848 #elif defined(TARGET_CRIS)
10849 if (arg1 & 0xff)
10850 ret = -TARGET_EINVAL;
10851 else {
10852 ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1;
10853 ret = 0;
10854 }
10855 return ret;
10856 #elif defined(TARGET_I386) && defined(TARGET_ABI32)
10857 return do_set_thread_area(cpu_env, arg1);
10858 #elif defined(TARGET_M68K)
10859 {
10860 TaskState *ts = cpu->opaque;
10861 ts->tp_value = arg1;
10862 return 0;
10863 }
10864 #else
10865 return -TARGET_ENOSYS;
10866 #endif
10867 #endif
10868 #ifdef TARGET_NR_get_thread_area
10869 case TARGET_NR_get_thread_area:
10870 #if defined(TARGET_I386) && defined(TARGET_ABI32)
10871 return do_get_thread_area(cpu_env, arg1);
10872 #elif defined(TARGET_M68K)
10873 {
10874 TaskState *ts = cpu->opaque;
10875 return ts->tp_value;
10876 }
10877 #else
10878 return -TARGET_ENOSYS;
10879 #endif
10880 #endif
10881 #ifdef TARGET_NR_getdomainname
10882 case TARGET_NR_getdomainname:
10883 return -TARGET_ENOSYS;
10884 #endif
10885
10886 #ifdef TARGET_NR_clock_settime
10887 case TARGET_NR_clock_settime:
10888 {
10889 struct timespec ts;
10890
10891 ret = target_to_host_timespec(&ts, arg2);
10892 if (!is_error(ret)) {
10893 ret = get_errno(clock_settime(arg1, &ts));
10894 }
10895 return ret;
10896 }
10897 #endif
10898 #ifdef TARGET_NR_clock_gettime
10899 case TARGET_NR_clock_gettime:
10900 {
10901 struct timespec ts;
10902 ret = get_errno(clock_gettime(arg1, &ts));
10903 if (!is_error(ret)) {
10904 ret = host_to_target_timespec(arg2, &ts);
10905 }
10906 return ret;
10907 }
10908 #endif
10909 #ifdef TARGET_NR_clock_getres
10910 case TARGET_NR_clock_getres:
10911 {
10912 struct timespec ts;
10913 ret = get_errno(clock_getres(arg1, &ts));
10914 if (!is_error(ret)) {
10915 host_to_target_timespec(arg2, &ts);
10916 }
10917 return ret;
10918 }
10919 #endif
10920 #ifdef TARGET_NR_clock_nanosleep
10921 case TARGET_NR_clock_nanosleep:
10922 {
10923 struct timespec ts;
10924 target_to_host_timespec(&ts, arg3);
10925 ret = get_errno(safe_clock_nanosleep(arg1, arg2,
10926 &ts, arg4 ? &ts : NULL));
10927 if (arg4)
10928 host_to_target_timespec(arg4, &ts);
10929
10930 #if defined(TARGET_PPC)
10931 /* clock_nanosleep is odd in that it returns positive errno values.
10932 * On PPC, CR0 bit 3 should be set in such a situation. */
10933 if (ret && ret != -TARGET_ERESTARTSYS) {
10934 ((CPUPPCState *)cpu_env)->crf[0] |= 1;
10935 }
10936 #endif
10937 return ret;
10938 }
10939 #endif
10940
10941 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
10942 case TARGET_NR_set_tid_address:
10943 return get_errno(set_tid_address((int *)g2h(arg1)));
10944 #endif
10945
10946 case TARGET_NR_tkill:
10947 return get_errno(safe_tkill((int)arg1, target_to_host_signal(arg2)));
10948
10949 case TARGET_NR_tgkill:
10950 return get_errno(safe_tgkill((int)arg1, (int)arg2,
10951 target_to_host_signal(arg3)));
10952
10953 #ifdef TARGET_NR_set_robust_list
10954 case TARGET_NR_set_robust_list:
10955 case TARGET_NR_get_robust_list:
10956 /* The ABI for supporting robust futexes has userspace pass
10957 * the kernel a pointer to a linked list which is updated by
10958 * userspace after the syscall; the list is walked by the kernel
10959 * when the thread exits. Since the linked list in QEMU guest
10960 * memory isn't a valid linked list for the host and we have
10961 * no way to reliably intercept the thread-death event, we can't
10962 * support these. Silently return ENOSYS so that guest userspace
10963 * falls back to a non-robust futex implementation (which should
10964 * be OK except in the corner case of the guest crashing while
10965 * holding a mutex that is shared with another process via
10966 * shared memory).
10967 */
10968 return -TARGET_ENOSYS;
10969 #endif
10970
10971 #if defined(TARGET_NR_utimensat)
10972 case TARGET_NR_utimensat:
10973 {
10974 struct timespec *tsp, ts[2];
10975 if (!arg3) {
10976 tsp = NULL;
10977 } else {
10978 target_to_host_timespec(ts, arg3);
10979 target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec));
10980 tsp = ts;
10981 }
10982 if (!arg2)
10983 ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4));
10984 else {
10985 if (!(p = lock_user_string(arg2))) {
10986 return -TARGET_EFAULT;
10987 }
10988 ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4));
10989 unlock_user(p, arg2, 0);
10990 }
10991 }
10992 return ret;
10993 #endif
10994 case TARGET_NR_futex:
10995 return do_futex(arg1, arg2, arg3, arg4, arg5, arg6);
10996 #if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
10997 case TARGET_NR_inotify_init:
10998 ret = get_errno(sys_inotify_init());
10999 if (ret >= 0) {
11000 fd_trans_register(ret, &target_inotify_trans);
11001 }
11002 return ret;
11003 #endif
11004 #ifdef CONFIG_INOTIFY1
11005 #if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
11006 case TARGET_NR_inotify_init1:
11007 ret = get_errno(sys_inotify_init1(target_to_host_bitmask(arg1,
11008 fcntl_flags_tbl)));
11009 if (ret >= 0) {
11010 fd_trans_register(ret, &target_inotify_trans);
11011 }
11012 return ret;
11013 #endif
11014 #endif
11015 #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
11016 case TARGET_NR_inotify_add_watch:
11017 p = lock_user_string(arg2);
11018 ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3));
11019 unlock_user(p, arg2, 0);
11020 return ret;
11021 #endif
11022 #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
11023 case TARGET_NR_inotify_rm_watch:
11024 return get_errno(sys_inotify_rm_watch(arg1, arg2));
11025 #endif
11026
11027 #if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
11028 case TARGET_NR_mq_open:
11029 {
11030 struct mq_attr posix_mq_attr;
11031 struct mq_attr *pposix_mq_attr;
11032 int host_flags;
11033
11034 host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
11035 pposix_mq_attr = NULL;
11036 if (arg4) {
11037 if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
11038 return -TARGET_EFAULT;
11039 }
11040 pposix_mq_attr = &posix_mq_attr;
11041 }
11042 p = lock_user_string(arg1 - 1);
11043 if (!p) {
11044 return -TARGET_EFAULT;
11045 }
11046 ret = get_errno(mq_open(p, host_flags, arg3, pposix_mq_attr));
11047 unlock_user (p, arg1, 0);
11048 }
11049 return ret;
11050
11051 case TARGET_NR_mq_unlink:
11052 p = lock_user_string(arg1 - 1);
11053 if (!p) {
11054 return -TARGET_EFAULT;
11055 }
11056 ret = get_errno(mq_unlink(p));
11057 unlock_user (p, arg1, 0);
11058 return ret;
11059
11060 case TARGET_NR_mq_timedsend:
11061 {
11062 struct timespec ts;
11063
11064 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11065 if (arg5 != 0) {
11066 target_to_host_timespec(&ts, arg5);
11067 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, &ts));
11068 host_to_target_timespec(arg5, &ts);
11069 } else {
11070 ret = get_errno(safe_mq_timedsend(arg1, p, arg3, arg4, NULL));
11071 }
11072 unlock_user (p, arg2, arg3);
11073 }
11074 return ret;
11075
11076 case TARGET_NR_mq_timedreceive:
11077 {
11078 struct timespec ts;
11079 unsigned int prio;
11080
11081 p = lock_user (VERIFY_READ, arg2, arg3, 1);
11082 if (arg5 != 0) {
11083 target_to_host_timespec(&ts, arg5);
11084 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11085 &prio, &ts));
11086 host_to_target_timespec(arg5, &ts);
11087 } else {
11088 ret = get_errno(safe_mq_timedreceive(arg1, p, arg3,
11089 &prio, NULL));
11090 }
11091 unlock_user (p, arg2, arg3);
11092 if (arg4 != 0)
11093 put_user_u32(prio, arg4);
11094 }
11095 return ret;
11096
11097 /* Not implemented for now... */
11098 /* case TARGET_NR_mq_notify: */
11099 /* break; */
11100
11101 case TARGET_NR_mq_getsetattr:
11102 {
11103 struct mq_attr posix_mq_attr_in, posix_mq_attr_out;
11104 ret = 0;
11105 if (arg2 != 0) {
11106 copy_from_user_mq_attr(&posix_mq_attr_in, arg2);
11107 ret = get_errno(mq_setattr(arg1, &posix_mq_attr_in,
11108 &posix_mq_attr_out));
11109 } else if (arg3 != 0) {
11110 ret = get_errno(mq_getattr(arg1, &posix_mq_attr_out));
11111 }
11112 if (ret == 0 && arg3 != 0) {
11113 copy_to_user_mq_attr(arg3, &posix_mq_attr_out);
11114 }
11115 }
11116 return ret;
11117 #endif
11118
11119 #ifdef CONFIG_SPLICE
11120 #ifdef TARGET_NR_tee
11121 case TARGET_NR_tee:
11122 {
11123 ret = get_errno(tee(arg1,arg2,arg3,arg4));
11124 }
11125 return ret;
11126 #endif
11127 #ifdef TARGET_NR_splice
11128 case TARGET_NR_splice:
11129 {
11130 loff_t loff_in, loff_out;
11131 loff_t *ploff_in = NULL, *ploff_out = NULL;
11132 if (arg2) {
11133 if (get_user_u64(loff_in, arg2)) {
11134 return -TARGET_EFAULT;
11135 }
11136 ploff_in = &loff_in;
11137 }
11138 if (arg4) {
11139 if (get_user_u64(loff_out, arg4)) {
11140 return -TARGET_EFAULT;
11141 }
11142 ploff_out = &loff_out;
11143 }
11144 ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
11145 if (arg2) {
11146 if (put_user_u64(loff_in, arg2)) {
11147 return -TARGET_EFAULT;
11148 }
11149 }
11150 if (arg4) {
11151 if (put_user_u64(loff_out, arg4)) {
11152 return -TARGET_EFAULT;
11153 }
11154 }
11155 }
11156 return ret;
11157 #endif
11158 #ifdef TARGET_NR_vmsplice
11159 case TARGET_NR_vmsplice:
11160 {
11161 struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1);
11162 if (vec != NULL) {
11163 ret = get_errno(vmsplice(arg1, vec, arg3, arg4));
11164 unlock_iovec(vec, arg2, arg3, 0);
11165 } else {
11166 ret = -host_to_target_errno(errno);
11167 }
11168 }
11169 return ret;
11170 #endif
11171 #endif /* CONFIG_SPLICE */
11172 #ifdef CONFIG_EVENTFD
11173 #if defined(TARGET_NR_eventfd)
11174 case TARGET_NR_eventfd:
11175 ret = get_errno(eventfd(arg1, 0));
11176 if (ret >= 0) {
11177 fd_trans_register(ret, &target_eventfd_trans);
11178 }
11179 return ret;
11180 #endif
11181 #if defined(TARGET_NR_eventfd2)
11182 case TARGET_NR_eventfd2:
11183 {
11184 int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC));
11185 if (arg2 & TARGET_O_NONBLOCK) {
11186 host_flags |= O_NONBLOCK;
11187 }
11188 if (arg2 & TARGET_O_CLOEXEC) {
11189 host_flags |= O_CLOEXEC;
11190 }
11191 ret = get_errno(eventfd(arg1, host_flags));
11192 if (ret >= 0) {
11193 fd_trans_register(ret, &target_eventfd_trans);
11194 }
11195 return ret;
11196 }
11197 #endif
11198 #endif /* CONFIG_EVENTFD */
11199 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
11200 case TARGET_NR_fallocate:
11201 #if TARGET_ABI_BITS == 32
11202 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
11203 target_offset64(arg5, arg6)));
11204 #else
11205 ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
11206 #endif
11207 return ret;
11208 #endif
11209 #if defined(CONFIG_SYNC_FILE_RANGE)
11210 #if defined(TARGET_NR_sync_file_range)
11211 case TARGET_NR_sync_file_range:
11212 #if TARGET_ABI_BITS == 32
11213 #if defined(TARGET_MIPS)
11214 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11215 target_offset64(arg5, arg6), arg7));
11216 #else
11217 ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
11218 target_offset64(arg4, arg5), arg6));
11219 #endif /* !TARGET_MIPS */
11220 #else
11221 ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
11222 #endif
11223 return ret;
11224 #endif
11225 #if defined(TARGET_NR_sync_file_range2)
11226 case TARGET_NR_sync_file_range2:
11227 /* This is like sync_file_range but the arguments are reordered */
11228 #if TARGET_ABI_BITS == 32
11229 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
11230 target_offset64(arg5, arg6), arg2));
11231 #else
11232 ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
11233 #endif
11234 return ret;
11235 #endif
11236 #endif
11237 #if defined(TARGET_NR_signalfd4)
11238 case TARGET_NR_signalfd4:
11239 return do_signalfd4(arg1, arg2, arg4);
11240 #endif
11241 #if defined(TARGET_NR_signalfd)
11242 case TARGET_NR_signalfd:
11243 return do_signalfd4(arg1, arg2, 0);
11244 #endif
11245 #if defined(CONFIG_EPOLL)
11246 #if defined(TARGET_NR_epoll_create)
11247 case TARGET_NR_epoll_create:
11248 return get_errno(epoll_create(arg1));
11249 #endif
11250 #if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1)
11251 case TARGET_NR_epoll_create1:
11252 return get_errno(epoll_create1(arg1));
11253 #endif
11254 #if defined(TARGET_NR_epoll_ctl)
11255 case TARGET_NR_epoll_ctl:
11256 {
11257 struct epoll_event ep;
11258 struct epoll_event *epp = 0;
11259 if (arg4) {
11260 struct target_epoll_event *target_ep;
11261 if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) {
11262 return -TARGET_EFAULT;
11263 }
11264 ep.events = tswap32(target_ep->events);
11265 /* The epoll_data_t union is just opaque data to the kernel,
11266 * so we transfer all 64 bits across and need not worry what
11267 * actual data type it is.
11268 */
11269 ep.data.u64 = tswap64(target_ep->data.u64);
11270 unlock_user_struct(target_ep, arg4, 0);
11271 epp = &ep;
11272 }
11273 return get_errno(epoll_ctl(arg1, arg2, arg3, epp));
11274 }
11275 #endif
11276
11277 #if defined(TARGET_NR_epoll_wait) || defined(TARGET_NR_epoll_pwait)
11278 #if defined(TARGET_NR_epoll_wait)
11279 case TARGET_NR_epoll_wait:
11280 #endif
11281 #if defined(TARGET_NR_epoll_pwait)
11282 case TARGET_NR_epoll_pwait:
11283 #endif
11284 {
11285 struct target_epoll_event *target_ep;
11286 struct epoll_event *ep;
11287 int epfd = arg1;
11288 int maxevents = arg3;
11289 int timeout = arg4;
11290
11291 if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) {
11292 return -TARGET_EINVAL;
11293 }
11294
11295 target_ep = lock_user(VERIFY_WRITE, arg2,
11296 maxevents * sizeof(struct target_epoll_event), 1);
11297 if (!target_ep) {
11298 return -TARGET_EFAULT;
11299 }
11300
11301 ep = g_try_new(struct epoll_event, maxevents);
11302 if (!ep) {
11303 unlock_user(target_ep, arg2, 0);
11304 return -TARGET_ENOMEM;
11305 }
11306
11307 switch (num) {
11308 #if defined(TARGET_NR_epoll_pwait)
11309 case TARGET_NR_epoll_pwait:
11310 {
11311 target_sigset_t *target_set;
11312 sigset_t _set, *set = &_set;
11313
11314 if (arg5) {
11315 if (arg6 != sizeof(target_sigset_t)) {
11316 ret = -TARGET_EINVAL;
11317 break;
11318 }
11319
11320 target_set = lock_user(VERIFY_READ, arg5,
11321 sizeof(target_sigset_t), 1);
11322 if (!target_set) {
11323 ret = -TARGET_EFAULT;
11324 break;
11325 }
11326 target_to_host_sigset(set, target_set);
11327 unlock_user(target_set, arg5, 0);
11328 } else {
11329 set = NULL;
11330 }
11331
11332 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11333 set, SIGSET_T_SIZE));
11334 break;
11335 }
11336 #endif
11337 #if defined(TARGET_NR_epoll_wait)
11338 case TARGET_NR_epoll_wait:
11339 ret = get_errno(safe_epoll_pwait(epfd, ep, maxevents, timeout,
11340 NULL, 0));
11341 break;
11342 #endif
11343 default:
11344 ret = -TARGET_ENOSYS;
11345 }
11346 if (!is_error(ret)) {
11347 int i;
11348 for (i = 0; i < ret; i++) {
11349 target_ep[i].events = tswap32(ep[i].events);
11350 target_ep[i].data.u64 = tswap64(ep[i].data.u64);
11351 }
11352 unlock_user(target_ep, arg2,
11353 ret * sizeof(struct target_epoll_event));
11354 } else {
11355 unlock_user(target_ep, arg2, 0);
11356 }
11357 g_free(ep);
11358 return ret;
11359 }
11360 #endif
11361 #endif
11362 #ifdef TARGET_NR_prlimit64
11363 case TARGET_NR_prlimit64:
11364 {
11365 /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
11366 struct target_rlimit64 *target_rnew, *target_rold;
11367 struct host_rlimit64 rnew, rold, *rnewp = 0;
11368 int resource = target_to_host_resource(arg2);
11369 if (arg3) {
11370 if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
11371 return -TARGET_EFAULT;
11372 }
11373 rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
11374 rnew.rlim_max = tswap64(target_rnew->rlim_max);
11375 unlock_user_struct(target_rnew, arg3, 0);
11376 rnewp = &rnew;
11377 }
11378
11379 ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
11380 if (!is_error(ret) && arg4) {
11381 if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
11382 return -TARGET_EFAULT;
11383 }
11384 target_rold->rlim_cur = tswap64(rold.rlim_cur);
11385 target_rold->rlim_max = tswap64(rold.rlim_max);
11386 unlock_user_struct(target_rold, arg4, 1);
11387 }
11388 return ret;
11389 }
11390 #endif
11391 #ifdef TARGET_NR_gethostname
11392 case TARGET_NR_gethostname:
11393 {
11394 char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0);
11395 if (name) {
11396 ret = get_errno(gethostname(name, arg2));
11397 unlock_user(name, arg1, arg2);
11398 } else {
11399 ret = -TARGET_EFAULT;
11400 }
11401 return ret;
11402 }
11403 #endif
11404 #ifdef TARGET_NR_atomic_cmpxchg_32
11405 case TARGET_NR_atomic_cmpxchg_32:
11406 {
11407 /* should use start_exclusive from main.c */
11408 abi_ulong mem_value;
11409 if (get_user_u32(mem_value, arg6)) {
11410 target_siginfo_t info;
11411 info.si_signo = SIGSEGV;
11412 info.si_errno = 0;
11413 info.si_code = TARGET_SEGV_MAPERR;
11414 info._sifields._sigfault._addr = arg6;
11415 queue_signal((CPUArchState *)cpu_env, info.si_signo,
11416 QEMU_SI_FAULT, &info);
11417 ret = 0xdeadbeef;
11418
11419 }
11420 if (mem_value == arg2)
11421 put_user_u32(arg1, arg6);
11422 return mem_value;
11423 }
11424 #endif
11425 #ifdef TARGET_NR_atomic_barrier
11426 case TARGET_NR_atomic_barrier:
11427 /* Like the kernel implementation and the
11428 qemu arm barrier, no-op this? */
11429 return 0;
11430 #endif
11431
11432 #ifdef TARGET_NR_timer_create
11433 case TARGET_NR_timer_create:
11434 {
11435 /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */
11436
11437 struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL;
11438
11439 int clkid = arg1;
11440 int timer_index = next_free_host_timer();
11441
11442 if (timer_index < 0) {
11443 ret = -TARGET_EAGAIN;
11444 } else {
11445 timer_t *phtimer = g_posix_timers + timer_index;
11446
11447 if (arg2) {
11448 phost_sevp = &host_sevp;
11449 ret = target_to_host_sigevent(phost_sevp, arg2);
11450 if (ret != 0) {
11451 return ret;
11452 }
11453 }
11454
11455 ret = get_errno(timer_create(clkid, phost_sevp, phtimer));
11456 if (ret) {
11457 phtimer = NULL;
11458 } else {
11459 if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) {
11460 return -TARGET_EFAULT;
11461 }
11462 }
11463 }
11464 return ret;
11465 }
11466 #endif
11467
11468 #ifdef TARGET_NR_timer_settime
11469 case TARGET_NR_timer_settime:
11470 {
11471 /* args: timer_t timerid, int flags, const struct itimerspec *new_value,
11472 * struct itimerspec * old_value */
11473 target_timer_t timerid = get_timer_id(arg1);
11474
11475 if (timerid < 0) {
11476 ret = timerid;
11477 } else if (arg3 == 0) {
11478 ret = -TARGET_EINVAL;
11479 } else {
11480 timer_t htimer = g_posix_timers[timerid];
11481 struct itimerspec hspec_new = {{0},}, hspec_old = {{0},};
11482
11483 if (target_to_host_itimerspec(&hspec_new, arg3)) {
11484 return -TARGET_EFAULT;
11485 }
11486 ret = get_errno(
11487 timer_settime(htimer, arg2, &hspec_new, &hspec_old));
11488 if (arg4 && host_to_target_itimerspec(arg4, &hspec_old)) {
11489 return -TARGET_EFAULT;
11490 }
11491 }
11492 return ret;
11493 }
11494 #endif
11495
11496 #ifdef TARGET_NR_timer_gettime
11497 case TARGET_NR_timer_gettime:
11498 {
11499 /* args: timer_t timerid, struct itimerspec *curr_value */
11500 target_timer_t timerid = get_timer_id(arg1);
11501
11502 if (timerid < 0) {
11503 ret = timerid;
11504 } else if (!arg2) {
11505 ret = -TARGET_EFAULT;
11506 } else {
11507 timer_t htimer = g_posix_timers[timerid];
11508 struct itimerspec hspec;
11509 ret = get_errno(timer_gettime(htimer, &hspec));
11510
11511 if (host_to_target_itimerspec(arg2, &hspec)) {
11512 ret = -TARGET_EFAULT;
11513 }
11514 }
11515 return ret;
11516 }
11517 #endif
11518
11519 #ifdef TARGET_NR_timer_getoverrun
11520 case TARGET_NR_timer_getoverrun:
11521 {
11522 /* args: timer_t timerid */
11523 target_timer_t timerid = get_timer_id(arg1);
11524
11525 if (timerid < 0) {
11526 ret = timerid;
11527 } else {
11528 timer_t htimer = g_posix_timers[timerid];
11529 ret = get_errno(timer_getoverrun(htimer));
11530 }
11531 fd_trans_unregister(ret);
11532 return ret;
11533 }
11534 #endif
11535
11536 #ifdef TARGET_NR_timer_delete
11537 case TARGET_NR_timer_delete:
11538 {
11539 /* args: timer_t timerid */
11540 target_timer_t timerid = get_timer_id(arg1);
11541
11542 if (timerid < 0) {
11543 ret = timerid;
11544 } else {
11545 timer_t htimer = g_posix_timers[timerid];
11546 ret = get_errno(timer_delete(htimer));
11547 g_posix_timers[timerid] = 0;
11548 }
11549 return ret;
11550 }
11551 #endif
11552
11553 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
11554 case TARGET_NR_timerfd_create:
11555 return get_errno(timerfd_create(arg1,
11556 target_to_host_bitmask(arg2, fcntl_flags_tbl)));
11557 #endif
11558
11559 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)
11560 case TARGET_NR_timerfd_gettime:
11561 {
11562 struct itimerspec its_curr;
11563
11564 ret = get_errno(timerfd_gettime(arg1, &its_curr));
11565
11566 if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) {
11567 return -TARGET_EFAULT;
11568 }
11569 }
11570 return ret;
11571 #endif
11572
11573 #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD)
11574 case TARGET_NR_timerfd_settime:
11575 {
11576 struct itimerspec its_new, its_old, *p_new;
11577
11578 if (arg3) {
11579 if (target_to_host_itimerspec(&its_new, arg3)) {
11580 return -TARGET_EFAULT;
11581 }
11582 p_new = &its_new;
11583 } else {
11584 p_new = NULL;
11585 }
11586
11587 ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old));
11588
11589 if (arg4 && host_to_target_itimerspec(arg4, &its_old)) {
11590 return -TARGET_EFAULT;
11591 }
11592 }
11593 return ret;
11594 #endif
11595
11596 #if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get)
11597 case TARGET_NR_ioprio_get:
11598 return get_errno(ioprio_get(arg1, arg2));
11599 #endif
11600
11601 #if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set)
11602 case TARGET_NR_ioprio_set:
11603 return get_errno(ioprio_set(arg1, arg2, arg3));
11604 #endif
11605
11606 #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS)
11607 case TARGET_NR_setns:
11608 return get_errno(setns(arg1, arg2));
11609 #endif
11610 #if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS)
11611 case TARGET_NR_unshare:
11612 return get_errno(unshare(arg1));
11613 #endif
11614 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
11615 case TARGET_NR_kcmp:
11616 return get_errno(kcmp(arg1, arg2, arg3, arg4, arg5));
11617 #endif
11618 #ifdef TARGET_NR_swapcontext
11619 case TARGET_NR_swapcontext:
11620 /* PowerPC specific. */
11621 return do_swapcontext(cpu_env, arg1, arg2, arg3);
11622 #endif
11623
11624 default:
11625 qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
11626 return -TARGET_ENOSYS;
11627 }
11628 return ret;
11629 }
11630
11631 abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
11632 abi_long arg2, abi_long arg3, abi_long arg4,
11633 abi_long arg5, abi_long arg6, abi_long arg7,
11634 abi_long arg8)
11635 {
11636 CPUState *cpu = ENV_GET_CPU(cpu_env);
11637 abi_long ret;
11638
11639 #ifdef DEBUG_ERESTARTSYS
11640 /* Debug-only code for exercising the syscall-restart code paths
11641 * in the per-architecture cpu main loops: restart every syscall
11642 * the guest makes once before letting it through.
11643 */
11644 {
11645 static bool flag;
11646 flag = !flag;
11647 if (flag) {
11648 return -TARGET_ERESTARTSYS;
11649 }
11650 }
11651 #endif
11652
11653 trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4,
11654 arg5, arg6, arg7, arg8);
11655
11656 if (unlikely(do_strace)) {
11657 print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
11658 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
11659 arg5, arg6, arg7, arg8);
11660 print_syscall_ret(num, ret);
11661 } else {
11662 ret = do_syscall1(cpu_env, num, arg1, arg2, arg3, arg4,
11663 arg5, arg6, arg7, arg8);
11664 }
11665
11666 trace_guest_user_syscall_ret(cpu, num, ret);
11667 return ret;
11668 }
AR7 emulation for QEMU