Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Conversion between 32-bit and 64-bit native system calls. | |
3 | * | |
4 | * Copyright (C) 2000 Silicon Graphics, Inc. | |
5 | * Written by Ulf Carlsson (ulfc@engr.sgi.com) | |
6 | * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) | |
7 | */ | |
1da177e4 LT |
8 | #include <linux/compiler.h> |
9 | #include <linux/mm.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/file.h> | |
12 | #include <linux/smp_lock.h> | |
13 | #include <linux/highuid.h> | |
14 | #include <linux/dirent.h> | |
15 | #include <linux/resource.h> | |
16 | #include <linux/highmem.h> | |
17 | #include <linux/time.h> | |
18 | #include <linux/times.h> | |
19 | #include <linux/poll.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/filter.h> | |
23 | #include <linux/shm.h> | |
24 | #include <linux/sem.h> | |
25 | #include <linux/msg.h> | |
26 | #include <linux/icmpv6.h> | |
27 | #include <linux/syscalls.h> | |
28 | #include <linux/sysctl.h> | |
29 | #include <linux/utime.h> | |
30 | #include <linux/utsname.h> | |
31 | #include <linux/personality.h> | |
1da177e4 LT |
32 | #include <linux/dnotify.h> |
33 | #include <linux/module.h> | |
34 | #include <linux/binfmts.h> | |
35 | #include <linux/security.h> | |
36 | #include <linux/compat.h> | |
37 | #include <linux/vfs.h> | |
38 | ||
39 | #include <net/sock.h> | |
40 | #include <net/scm.h> | |
41 | ||
42 | #include <asm/ipc.h> | |
43 | #include <asm/sim.h> | |
44 | #include <asm/uaccess.h> | |
45 | #include <asm/mmu_context.h> | |
46 | #include <asm/mman.h> | |
47 | ||
48 | /* Use this to get at 32-bit user passed pointers. */ | |
49 | /* A() macro should be used for places where you e.g. | |
50 | have some internal variable u32 and just want to get | |
51 | rid of a compiler warning. AA() has to be used in | |
52 | places where you want to convert a function argument | |
53 | to 32bit pointer or when you e.g. access pt_regs | |
54 | structure and want to consider 32bit registers only. | |
55 | */ | |
56 | #define A(__x) ((unsigned long)(__x)) | |
57 | #define AA(__x) ((unsigned long)((int)__x)) | |
58 | ||
59 | #ifdef __MIPSEB__ | |
60 | #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) | |
61 | #endif | |
62 | #ifdef __MIPSEL__ | |
63 | #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) | |
64 | #endif | |
65 | ||
66 | /* | |
67 | * Revalidate the inode. This is required for proper NFS attribute caching. | |
68 | */ | |
69 | ||
219ac73a | 70 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) |
1da177e4 LT |
71 | { |
72 | struct compat_stat tmp; | |
73 | ||
74 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
75 | return -EOVERFLOW; | |
76 | ||
77 | memset(&tmp, 0, sizeof(tmp)); | |
78 | tmp.st_dev = new_encode_dev(stat->dev); | |
79 | tmp.st_ino = stat->ino; | |
afefdbb2 DH |
80 | if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) |
81 | return -EOVERFLOW; | |
1da177e4 LT |
82 | tmp.st_mode = stat->mode; |
83 | tmp.st_nlink = stat->nlink; | |
84 | SET_UID(tmp.st_uid, stat->uid); | |
85 | SET_GID(tmp.st_gid, stat->gid); | |
86 | tmp.st_rdev = new_encode_dev(stat->rdev); | |
87 | tmp.st_size = stat->size; | |
88 | tmp.st_atime = stat->atime.tv_sec; | |
89 | tmp.st_mtime = stat->mtime.tv_sec; | |
90 | tmp.st_ctime = stat->ctime.tv_sec; | |
91 | #ifdef STAT_HAVE_NSEC | |
92 | tmp.st_atime_nsec = stat->atime.tv_nsec; | |
93 | tmp.st_mtime_nsec = stat->mtime.tv_nsec; | |
94 | tmp.st_ctime_nsec = stat->ctime.tv_nsec; | |
95 | #endif | |
96 | tmp.st_blocks = stat->blocks; | |
97 | tmp.st_blksize = stat->blksize; | |
98 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
99 | } | |
100 | ||
101 | asmlinkage unsigned long | |
102 | sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, | |
103 | unsigned long flags, unsigned long fd, unsigned long pgoff) | |
104 | { | |
105 | struct file * file = NULL; | |
106 | unsigned long error; | |
107 | ||
108 | error = -EINVAL; | |
947df17c PA |
109 | if (pgoff & (~PAGE_MASK >> 12)) |
110 | goto out; | |
111 | pgoff >>= PAGE_SHIFT-12; | |
112 | ||
1da177e4 LT |
113 | if (!(flags & MAP_ANONYMOUS)) { |
114 | error = -EBADF; | |
115 | file = fget(fd); | |
116 | if (!file) | |
117 | goto out; | |
118 | } | |
119 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
120 | ||
121 | down_write(¤t->mm->mmap_sem); | |
122 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); | |
123 | up_write(¤t->mm->mmap_sem); | |
124 | if (file) | |
125 | fput(file); | |
126 | ||
127 | out: | |
128 | return error; | |
129 | } | |
130 | ||
131 | ||
219ac73a | 132 | asmlinkage int sys_truncate64(const char __user *path, unsigned int high, |
1da177e4 LT |
133 | unsigned int low) |
134 | { | |
135 | if ((int)high < 0) | |
136 | return -EINVAL; | |
137 | return sys_truncate(path, ((long) high << 32) | low); | |
138 | } | |
139 | ||
140 | asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, | |
141 | unsigned int low) | |
142 | { | |
143 | if ((int)high < 0) | |
144 | return -EINVAL; | |
145 | return sys_ftruncate(fd, ((long) high << 32) | low); | |
146 | } | |
147 | ||
148 | /* | |
149 | * sys_execve() executes a new program. | |
150 | */ | |
151 | asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) | |
152 | { | |
153 | int error; | |
154 | char * filename; | |
155 | ||
156 | filename = getname(compat_ptr(regs.regs[4])); | |
157 | error = PTR_ERR(filename); | |
158 | if (IS_ERR(filename)) | |
159 | goto out; | |
160 | error = compat_do_execve(filename, compat_ptr(regs.regs[5]), | |
161 | compat_ptr(regs.regs[6]), ®s); | |
162 | putname(filename); | |
163 | ||
164 | out: | |
165 | return error; | |
166 | } | |
167 | ||
54f2da75 RB |
168 | asmlinkage long |
169 | sysn32_waitid(int which, compat_pid_t pid, | |
170 | siginfo_t __user *uinfo, int options, | |
171 | struct compat_rusage __user *uru) | |
172 | { | |
173 | struct rusage ru; | |
174 | long ret; | |
175 | mm_segment_t old_fs = get_fs(); | |
219ac73a | 176 | int si_signo; |
54f2da75 | 177 | |
f3468e0c RB |
178 | if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo))) |
179 | return -EFAULT; | |
180 | ||
54f2da75 RB |
181 | set_fs (KERNEL_DS); |
182 | ret = sys_waitid(which, pid, uinfo, options, | |
183 | uru ? (struct rusage __user *) &ru : NULL); | |
184 | set_fs (old_fs); | |
185 | ||
219ac73a AN |
186 | if (__get_user(si_signo, &uinfo->si_signo)) |
187 | return -EFAULT; | |
188 | if (ret < 0 || si_signo == 0) | |
54f2da75 RB |
189 | return ret; |
190 | ||
191 | if (uru) | |
192 | ret = put_compat_rusage(&ru, uru); | |
193 | return ret; | |
194 | } | |
195 | ||
1da177e4 LT |
196 | struct sysinfo32 { |
197 | s32 uptime; | |
198 | u32 loads[3]; | |
199 | u32 totalram; | |
200 | u32 freeram; | |
201 | u32 sharedram; | |
202 | u32 bufferram; | |
203 | u32 totalswap; | |
204 | u32 freeswap; | |
205 | u16 procs; | |
206 | u32 totalhigh; | |
207 | u32 freehigh; | |
208 | u32 mem_unit; | |
209 | char _f[8]; | |
210 | }; | |
211 | ||
219ac73a | 212 | asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info) |
1da177e4 LT |
213 | { |
214 | struct sysinfo s; | |
215 | int ret, err; | |
216 | mm_segment_t old_fs = get_fs (); | |
42a3b4f2 | 217 | |
1da177e4 | 218 | set_fs (KERNEL_DS); |
219ac73a | 219 | ret = sys_sysinfo((struct sysinfo __user *)&s); |
1da177e4 LT |
220 | set_fs (old_fs); |
221 | err = put_user (s.uptime, &info->uptime); | |
222 | err |= __put_user (s.loads[0], &info->loads[0]); | |
223 | err |= __put_user (s.loads[1], &info->loads[1]); | |
224 | err |= __put_user (s.loads[2], &info->loads[2]); | |
225 | err |= __put_user (s.totalram, &info->totalram); | |
226 | err |= __put_user (s.freeram, &info->freeram); | |
227 | err |= __put_user (s.sharedram, &info->sharedram); | |
228 | err |= __put_user (s.bufferram, &info->bufferram); | |
229 | err |= __put_user (s.totalswap, &info->totalswap); | |
230 | err |= __put_user (s.freeswap, &info->freeswap); | |
231 | err |= __put_user (s.procs, &info->procs); | |
232 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
233 | err |= __put_user (s.freehigh, &info->freehigh); | |
234 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
235 | if (err) | |
236 | return -EFAULT; | |
237 | return ret; | |
238 | } | |
239 | ||
240 | #define RLIM_INFINITY32 0x7fffffff | |
241 | #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) | |
242 | ||
243 | struct rlimit32 { | |
244 | int rlim_cur; | |
245 | int rlim_max; | |
246 | }; | |
247 | ||
248 | #ifdef __MIPSEB__ | |
219ac73a | 249 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, |
1da177e4 LT |
250 | int length_hi, int length_lo) |
251 | #endif | |
252 | #ifdef __MIPSEL__ | |
219ac73a | 253 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, |
1da177e4 LT |
254 | int length_lo, int length_hi) |
255 | #endif | |
256 | { | |
257 | loff_t length; | |
258 | ||
259 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
260 | ||
261 | return sys_truncate(path, length); | |
262 | } | |
263 | ||
264 | #ifdef __MIPSEB__ | |
265 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
266 | int length_hi, int length_lo) | |
267 | #endif | |
268 | #ifdef __MIPSEL__ | |
269 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
270 | int length_lo, int length_hi) | |
271 | #endif | |
272 | { | |
273 | loff_t length; | |
274 | ||
275 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
276 | ||
277 | return sys_ftruncate(fd, length); | |
278 | } | |
279 | ||
280 | static inline long | |
219ac73a | 281 | get_tv32(struct timeval *o, struct compat_timeval __user *i) |
1da177e4 LT |
282 | { |
283 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
284 | (__get_user(o->tv_sec, &i->tv_sec) | | |
285 | __get_user(o->tv_usec, &i->tv_usec))); | |
286 | } | |
287 | ||
288 | static inline long | |
219ac73a | 289 | put_tv32(struct compat_timeval __user *o, struct timeval *i) |
1da177e4 LT |
290 | { |
291 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
292 | (__put_user(i->tv_sec, &o->tv_sec) | | |
293 | __put_user(i->tv_usec, &o->tv_usec))); | |
294 | } | |
295 | ||
296 | extern struct timezone sys_tz; | |
297 | ||
298 | asmlinkage int | |
219ac73a | 299 | sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
1da177e4 LT |
300 | { |
301 | if (tv) { | |
302 | struct timeval ktv; | |
303 | do_gettimeofday(&ktv); | |
304 | if (put_tv32(tv, &ktv)) | |
305 | return -EFAULT; | |
306 | } | |
307 | if (tz) { | |
308 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
309 | return -EFAULT; | |
310 | } | |
311 | return 0; | |
312 | } | |
313 | ||
219ac73a | 314 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) |
1da177e4 LT |
315 | { |
316 | long usec; | |
317 | ||
318 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
319 | return -EFAULT; | |
320 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
321 | return -EFAULT; | |
322 | if (__get_user(usec, &i->tv_usec)) | |
323 | return -EFAULT; | |
324 | o->tv_nsec = usec * 1000; | |
325 | return 0; | |
326 | } | |
327 | ||
328 | asmlinkage int | |
219ac73a | 329 | sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
1da177e4 LT |
330 | { |
331 | struct timespec kts; | |
332 | struct timezone ktz; | |
333 | ||
334 | if (tv) { | |
335 | if (get_ts32(&kts, tv)) | |
336 | return -EFAULT; | |
337 | } | |
338 | if (tz) { | |
339 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
340 | return -EFAULT; | |
341 | } | |
342 | ||
343 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
344 | } | |
345 | ||
346 | asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, | |
219ac73a | 347 | unsigned int offset_low, loff_t __user * result, |
1da177e4 LT |
348 | unsigned int origin) |
349 | { | |
350 | return sys_llseek(fd, offset_high, offset_low, result, origin); | |
351 | } | |
352 | ||
353 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + | |
354 | lseek back to original location. They fail just like lseek does on | |
355 | non-seekable files. */ | |
356 | ||
219ac73a | 357 | asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf, |
1da177e4 LT |
358 | size_t count, u32 unused, u64 a4, u64 a5) |
359 | { | |
6ad0013b | 360 | return sys_pread64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
361 | } |
362 | ||
219ac73a | 363 | asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf, |
1da177e4 LT |
364 | size_t count, u32 unused, u64 a4, u64 a5) |
365 | { | |
6ad0013b | 366 | return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
367 | } |
368 | ||
369 | asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, | |
219ac73a | 370 | struct compat_timespec __user *interval) |
1da177e4 LT |
371 | { |
372 | struct timespec t; | |
373 | int ret; | |
374 | mm_segment_t old_fs = get_fs (); | |
375 | ||
376 | set_fs (KERNEL_DS); | |
219ac73a | 377 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
1da177e4 LT |
378 | set_fs (old_fs); |
379 | if (put_user (t.tv_sec, &interval->tv_sec) || | |
380 | __put_user (t.tv_nsec, &interval->tv_nsec)) | |
381 | return -EFAULT; | |
382 | return ret; | |
383 | } | |
384 | ||
385 | struct msgbuf32 { s32 mtype; char mtext[1]; }; | |
386 | ||
387 | struct ipc_perm32 | |
388 | { | |
389 | key_t key; | |
202e5979 SR |
390 | __compat_uid_t uid; |
391 | __compat_gid_t gid; | |
392 | __compat_uid_t cuid; | |
393 | __compat_gid_t cgid; | |
1da177e4 LT |
394 | compat_mode_t mode; |
395 | unsigned short seq; | |
396 | }; | |
397 | ||
398 | struct ipc64_perm32 { | |
399 | key_t key; | |
202e5979 SR |
400 | __compat_uid_t uid; |
401 | __compat_gid_t gid; | |
402 | __compat_uid_t cuid; | |
403 | __compat_gid_t cgid; | |
42a3b4f2 | 404 | compat_mode_t mode; |
1da177e4 LT |
405 | unsigned short seq; |
406 | unsigned short __pad1; | |
407 | unsigned int __unused1; | |
408 | unsigned int __unused2; | |
409 | }; | |
410 | ||
411 | struct semid_ds32 { | |
412 | struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ | |
413 | compat_time_t sem_otime; /* last semop time */ | |
414 | compat_time_t sem_ctime; /* last change time */ | |
415 | u32 sem_base; /* ptr to first semaphore in array */ | |
416 | u32 sem_pending; /* pending operations to be processed */ | |
417 | u32 sem_pending_last; /* last pending operation */ | |
418 | u32 undo; /* undo requests on this array */ | |
419 | unsigned short sem_nsems; /* no. of semaphores in array */ | |
420 | }; | |
421 | ||
422 | struct semid64_ds32 { | |
423 | struct ipc64_perm32 sem_perm; | |
424 | compat_time_t sem_otime; | |
425 | compat_time_t sem_ctime; | |
426 | unsigned int sem_nsems; | |
427 | unsigned int __unused1; | |
428 | unsigned int __unused2; | |
429 | }; | |
430 | ||
431 | struct msqid_ds32 | |
432 | { | |
433 | struct ipc_perm32 msg_perm; | |
434 | u32 msg_first; | |
435 | u32 msg_last; | |
436 | compat_time_t msg_stime; | |
437 | compat_time_t msg_rtime; | |
438 | compat_time_t msg_ctime; | |
439 | u32 wwait; | |
440 | u32 rwait; | |
441 | unsigned short msg_cbytes; | |
442 | unsigned short msg_qnum; | |
443 | unsigned short msg_qbytes; | |
444 | compat_ipc_pid_t msg_lspid; | |
445 | compat_ipc_pid_t msg_lrpid; | |
446 | }; | |
447 | ||
448 | struct msqid64_ds32 { | |
449 | struct ipc64_perm32 msg_perm; | |
450 | compat_time_t msg_stime; | |
451 | unsigned int __unused1; | |
452 | compat_time_t msg_rtime; | |
453 | unsigned int __unused2; | |
454 | compat_time_t msg_ctime; | |
455 | unsigned int __unused3; | |
456 | unsigned int msg_cbytes; | |
457 | unsigned int msg_qnum; | |
458 | unsigned int msg_qbytes; | |
459 | compat_pid_t msg_lspid; | |
460 | compat_pid_t msg_lrpid; | |
461 | unsigned int __unused4; | |
462 | unsigned int __unused5; | |
463 | }; | |
464 | ||
465 | struct shmid_ds32 { | |
466 | struct ipc_perm32 shm_perm; | |
467 | int shm_segsz; | |
468 | compat_time_t shm_atime; | |
469 | compat_time_t shm_dtime; | |
470 | compat_time_t shm_ctime; | |
471 | compat_ipc_pid_t shm_cpid; | |
472 | compat_ipc_pid_t shm_lpid; | |
473 | unsigned short shm_nattch; | |
474 | }; | |
475 | ||
476 | struct shmid64_ds32 { | |
477 | struct ipc64_perm32 shm_perm; | |
478 | compat_size_t shm_segsz; | |
479 | compat_time_t shm_atime; | |
480 | compat_time_t shm_dtime; | |
481 | compat_time_t shm_ctime; | |
482 | compat_pid_t shm_cpid; | |
483 | compat_pid_t shm_lpid; | |
484 | unsigned int shm_nattch; | |
485 | unsigned int __unused1; | |
486 | unsigned int __unused2; | |
487 | }; | |
488 | ||
489 | struct ipc_kludge32 { | |
490 | u32 msgp; | |
491 | s32 msgtyp; | |
492 | }; | |
493 | ||
494 | static int | |
219ac73a | 495 | do_sys32_semctl(int first, int second, int third, void __user *uptr) |
1da177e4 LT |
496 | { |
497 | union semun fourth; | |
498 | u32 pad; | |
499 | int err, err2; | |
500 | struct semid64_ds s; | |
501 | mm_segment_t old_fs; | |
502 | ||
503 | if (!uptr) | |
504 | return -EINVAL; | |
505 | err = -EFAULT; | |
219ac73a | 506 | if (get_user (pad, (u32 __user *)uptr)) |
1da177e4 LT |
507 | return err; |
508 | if ((third & ~IPC_64) == SETVAL) | |
509 | fourth.val = (int)pad; | |
510 | else | |
219ac73a | 511 | fourth.__pad = (void __user *)A(pad); |
1da177e4 LT |
512 | switch (third & ~IPC_64) { |
513 | case IPC_INFO: | |
514 | case IPC_RMID: | |
515 | case IPC_SET: | |
516 | case SEM_INFO: | |
517 | case GETVAL: | |
518 | case GETPID: | |
519 | case GETNCNT: | |
520 | case GETZCNT: | |
521 | case GETALL: | |
522 | case SETVAL: | |
523 | case SETALL: | |
524 | err = sys_semctl (first, second, third, fourth); | |
525 | break; | |
526 | ||
527 | case IPC_STAT: | |
528 | case SEM_STAT: | |
219ac73a | 529 | fourth.__pad = (struct semid64_ds __user *)&s; |
1da177e4 LT |
530 | old_fs = get_fs(); |
531 | set_fs(KERNEL_DS); | |
532 | err = sys_semctl(first, second, third | IPC_64, fourth); | |
533 | set_fs(old_fs); | |
534 | ||
535 | if (third & IPC_64) { | |
219ac73a | 536 | struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad); |
1da177e4 LT |
537 | |
538 | if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { | |
539 | err = -EFAULT; | |
540 | break; | |
541 | } | |
542 | err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); | |
543 | err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); | |
544 | err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); | |
545 | err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); | |
546 | err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); | |
547 | err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); | |
548 | err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); | |
549 | err2 |= __put_user(s.sem_otime, &usp64->sem_otime); | |
550 | err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); | |
551 | err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); | |
552 | } else { | |
219ac73a | 553 | struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad); |
1da177e4 LT |
554 | |
555 | if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { | |
556 | err = -EFAULT; | |
557 | break; | |
558 | } | |
559 | err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); | |
560 | err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); | |
561 | err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); | |
562 | err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); | |
563 | err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); | |
564 | err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); | |
565 | err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); | |
566 | err2 |= __put_user(s.sem_otime, &usp32->sem_otime); | |
567 | err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); | |
568 | err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); | |
569 | } | |
570 | if (err2) | |
571 | err = -EFAULT; | |
572 | break; | |
573 | ||
574 | default: | |
575 | err = - EINVAL; | |
576 | break; | |
577 | } | |
578 | ||
579 | return err; | |
580 | } | |
581 | ||
582 | static int | |
219ac73a | 583 | do_sys32_msgsnd (int first, int second, int third, void __user *uptr) |
1da177e4 | 584 | { |
219ac73a | 585 | struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr; |
1da177e4 LT |
586 | struct msgbuf *p; |
587 | mm_segment_t old_fs; | |
588 | int err; | |
589 | ||
590 | if (second < 0) | |
591 | return -EINVAL; | |
592 | p = kmalloc (second + sizeof (struct msgbuf) | |
593 | + 4, GFP_USER); | |
594 | if (!p) | |
595 | return -ENOMEM; | |
596 | err = get_user (p->mtype, &up->mtype); | |
597 | if (err) | |
598 | goto out; | |
599 | err |= __copy_from_user (p->mtext, &up->mtext, second); | |
600 | if (err) | |
601 | goto out; | |
602 | old_fs = get_fs (); | |
603 | set_fs (KERNEL_DS); | |
219ac73a | 604 | err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third); |
1da177e4 LT |
605 | set_fs (old_fs); |
606 | out: | |
607 | kfree (p); | |
608 | ||
609 | return err; | |
610 | } | |
611 | ||
612 | static int | |
613 | do_sys32_msgrcv (int first, int second, int msgtyp, int third, | |
219ac73a | 614 | int version, void __user *uptr) |
1da177e4 | 615 | { |
219ac73a | 616 | struct msgbuf32 __user *up; |
1da177e4 LT |
617 | struct msgbuf *p; |
618 | mm_segment_t old_fs; | |
619 | int err; | |
620 | ||
621 | if (!version) { | |
219ac73a | 622 | struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr; |
1da177e4 LT |
623 | struct ipc_kludge32 ipck; |
624 | ||
625 | err = -EINVAL; | |
626 | if (!uptr) | |
627 | goto out; | |
628 | err = -EFAULT; | |
629 | if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32))) | |
630 | goto out; | |
219ac73a | 631 | uptr = (void __user *)AA(ipck.msgp); |
1da177e4 LT |
632 | msgtyp = ipck.msgtyp; |
633 | } | |
634 | ||
635 | if (second < 0) | |
636 | return -EINVAL; | |
637 | err = -ENOMEM; | |
638 | p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); | |
639 | if (!p) | |
640 | goto out; | |
641 | old_fs = get_fs (); | |
642 | set_fs (KERNEL_DS); | |
219ac73a | 643 | err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third); |
1da177e4 LT |
644 | set_fs (old_fs); |
645 | if (err < 0) | |
646 | goto free_then_out; | |
219ac73a | 647 | up = (struct msgbuf32 __user *)uptr; |
1da177e4 LT |
648 | if (put_user (p->mtype, &up->mtype) || |
649 | __copy_to_user (&up->mtext, p->mtext, err)) | |
650 | err = -EFAULT; | |
651 | free_then_out: | |
652 | kfree (p); | |
653 | out: | |
654 | return err; | |
655 | } | |
656 | ||
657 | static int | |
219ac73a | 658 | do_sys32_msgctl (int first, int second, void __user *uptr) |
1da177e4 LT |
659 | { |
660 | int err = -EINVAL, err2; | |
661 | struct msqid64_ds m; | |
219ac73a AN |
662 | struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr; |
663 | struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr; | |
1da177e4 LT |
664 | mm_segment_t old_fs; |
665 | ||
666 | switch (second & ~IPC_64) { | |
667 | case IPC_INFO: | |
668 | case IPC_RMID: | |
669 | case MSG_INFO: | |
219ac73a | 670 | err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr); |
1da177e4 LT |
671 | break; |
672 | ||
673 | case IPC_SET: | |
674 | if (second & IPC_64) { | |
675 | if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) { | |
676 | err = -EFAULT; | |
677 | break; | |
678 | } | |
679 | err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid); | |
680 | err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid); | |
681 | err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode); | |
682 | err |= __get_user(m.msg_qbytes, &up64->msg_qbytes); | |
683 | } else { | |
684 | if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) { | |
685 | err = -EFAULT; | |
686 | break; | |
687 | } | |
688 | err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid); | |
689 | err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid); | |
690 | err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode); | |
691 | err |= __get_user(m.msg_qbytes, &up32->msg_qbytes); | |
692 | } | |
693 | if (err) | |
694 | break; | |
695 | old_fs = get_fs(); | |
696 | set_fs(KERNEL_DS); | |
219ac73a | 697 | err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); |
1da177e4 LT |
698 | set_fs(old_fs); |
699 | break; | |
700 | ||
701 | case IPC_STAT: | |
702 | case MSG_STAT: | |
703 | old_fs = get_fs(); | |
704 | set_fs(KERNEL_DS); | |
219ac73a | 705 | err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); |
1da177e4 LT |
706 | set_fs(old_fs); |
707 | if (second & IPC_64) { | |
708 | if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { | |
709 | err = -EFAULT; | |
710 | break; | |
711 | } | |
712 | err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key); | |
713 | err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid); | |
714 | err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid); | |
715 | err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid); | |
716 | err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid); | |
717 | err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode); | |
718 | err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq); | |
719 | err2 |= __put_user(m.msg_stime, &up64->msg_stime); | |
720 | err2 |= __put_user(m.msg_rtime, &up64->msg_rtime); | |
721 | err2 |= __put_user(m.msg_ctime, &up64->msg_ctime); | |
722 | err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes); | |
723 | err2 |= __put_user(m.msg_qnum, &up64->msg_qnum); | |
724 | err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes); | |
725 | err2 |= __put_user(m.msg_lspid, &up64->msg_lspid); | |
726 | err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid); | |
727 | if (err2) | |
728 | err = -EFAULT; | |
729 | } else { | |
730 | if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { | |
731 | err = -EFAULT; | |
732 | break; | |
733 | } | |
734 | err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key); | |
735 | err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid); | |
736 | err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid); | |
737 | err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid); | |
738 | err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid); | |
739 | err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode); | |
740 | err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq); | |
741 | err2 |= __put_user(m.msg_stime, &up32->msg_stime); | |
742 | err2 |= __put_user(m.msg_rtime, &up32->msg_rtime); | |
743 | err2 |= __put_user(m.msg_ctime, &up32->msg_ctime); | |
744 | err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes); | |
745 | err2 |= __put_user(m.msg_qnum, &up32->msg_qnum); | |
746 | err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes); | |
747 | err2 |= __put_user(m.msg_lspid, &up32->msg_lspid); | |
748 | err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid); | |
749 | if (err2) | |
750 | err = -EFAULT; | |
751 | } | |
752 | break; | |
753 | } | |
754 | ||
755 | return err; | |
756 | } | |
757 | ||
758 | static int | |
219ac73a | 759 | do_sys32_shmat (int first, int second, int third, int version, void __user *uptr) |
1da177e4 LT |
760 | { |
761 | unsigned long raddr; | |
219ac73a | 762 | u32 __user *uaddr = (u32 __user *)A((u32)third); |
1da177e4 LT |
763 | int err = -EINVAL; |
764 | ||
765 | if (version == 1) | |
766 | return err; | |
767 | err = do_shmat (first, uptr, second, &raddr); | |
768 | if (err) | |
769 | return err; | |
770 | err = put_user (raddr, uaddr); | |
771 | return err; | |
772 | } | |
773 | ||
774 | struct shm_info32 { | |
775 | int used_ids; | |
776 | u32 shm_tot, shm_rss, shm_swp; | |
777 | u32 swap_attempts, swap_successes; | |
778 | }; | |
779 | ||
780 | static int | |
219ac73a | 781 | do_sys32_shmctl (int first, int second, void __user *uptr) |
1da177e4 | 782 | { |
219ac73a AN |
783 | struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr; |
784 | struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr; | |
785 | struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr; | |
1da177e4 LT |
786 | int err = -EFAULT, err2; |
787 | struct shmid64_ds s64; | |
788 | mm_segment_t old_fs; | |
789 | struct shm_info si; | |
790 | struct shmid_ds s; | |
791 | ||
792 | switch (second & ~IPC_64) { | |
793 | case IPC_INFO: | |
794 | second = IPC_INFO; /* So that we don't have to translate it */ | |
795 | case IPC_RMID: | |
796 | case SHM_LOCK: | |
797 | case SHM_UNLOCK: | |
219ac73a | 798 | err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr); |
1da177e4 LT |
799 | break; |
800 | case IPC_SET: | |
801 | if (second & IPC_64) { | |
802 | err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); | |
803 | err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); | |
804 | err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); | |
805 | } else { | |
806 | err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); | |
807 | err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); | |
808 | err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); | |
809 | } | |
810 | if (err) | |
811 | break; | |
812 | old_fs = get_fs(); | |
813 | set_fs(KERNEL_DS); | |
219ac73a | 814 | err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s); |
1da177e4 LT |
815 | set_fs(old_fs); |
816 | break; | |
817 | ||
818 | case IPC_STAT: | |
819 | case SHM_STAT: | |
820 | old_fs = get_fs(); | |
821 | set_fs(KERNEL_DS); | |
219ac73a | 822 | err = sys_shmctl(first, second | IPC_64, (void __user *) &s64); |
1da177e4 LT |
823 | set_fs(old_fs); |
824 | if (err < 0) | |
825 | break; | |
826 | if (second & IPC_64) { | |
827 | if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { | |
828 | err = -EFAULT; | |
829 | break; | |
830 | } | |
831 | err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); | |
832 | err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); | |
833 | err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); | |
834 | err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); | |
835 | err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); | |
836 | err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); | |
837 | err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); | |
838 | err2 |= __put_user(s64.shm_atime, &up64->shm_atime); | |
839 | err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); | |
840 | err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); | |
841 | err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); | |
842 | err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); | |
843 | err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); | |
844 | err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); | |
845 | } else { | |
846 | if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { | |
847 | err = -EFAULT; | |
848 | break; | |
849 | } | |
850 | err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); | |
851 | err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); | |
852 | err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); | |
853 | err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); | |
854 | err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); | |
855 | err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); | |
856 | err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); | |
857 | err2 |= __put_user(s64.shm_atime, &up32->shm_atime); | |
858 | err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); | |
859 | err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); | |
860 | err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); | |
861 | err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); | |
862 | err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); | |
863 | err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); | |
864 | } | |
865 | if (err2) | |
866 | err = -EFAULT; | |
867 | break; | |
868 | ||
869 | case SHM_INFO: | |
870 | old_fs = get_fs(); | |
871 | set_fs(KERNEL_DS); | |
219ac73a | 872 | err = sys_shmctl(first, second, (void __user *)&si); |
1da177e4 LT |
873 | set_fs(old_fs); |
874 | if (err < 0) | |
875 | break; | |
876 | err2 = put_user(si.used_ids, &uip->used_ids); | |
877 | err2 |= __put_user(si.shm_tot, &uip->shm_tot); | |
878 | err2 |= __put_user(si.shm_rss, &uip->shm_rss); | |
879 | err2 |= __put_user(si.shm_swp, &uip->shm_swp); | |
880 | err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); | |
881 | err2 |= __put_user (si.swap_successes, &uip->swap_successes); | |
882 | if (err2) | |
883 | err = -EFAULT; | |
884 | break; | |
885 | ||
886 | default: | |
887 | err = -EINVAL; | |
888 | break; | |
889 | } | |
890 | ||
891 | return err; | |
892 | } | |
893 | ||
219ac73a AN |
894 | static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems, |
895 | const struct compat_timespec __user *timeout32) | |
1da177e4 LT |
896 | { |
897 | struct compat_timespec t32; | |
219ac73a | 898 | struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64)); |
1da177e4 LT |
899 | |
900 | if (copy_from_user(&t32, timeout32, sizeof(t32))) | |
901 | return -EFAULT; | |
902 | ||
903 | if (put_user(t32.tv_sec, &t64->tv_sec) || | |
904 | put_user(t32.tv_nsec, &t64->tv_nsec)) | |
905 | return -EFAULT; | |
906 | ||
907 | return sys_semtimedop(semid, tsems, nsems, t64); | |
908 | } | |
909 | ||
910 | asmlinkage long | |
911 | sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) | |
912 | { | |
913 | int version, err; | |
914 | ||
915 | version = call >> 16; /* hack for backward compatibility */ | |
916 | call &= 0xffff; | |
917 | ||
918 | switch (call) { | |
919 | case SEMOP: | |
920 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
219ac73a | 921 | err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second, |
1da177e4 LT |
922 | NULL); |
923 | break; | |
924 | case SEMTIMEDOP: | |
219ac73a | 925 | err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second, |
1da177e4 LT |
926 | (const struct compat_timespec __user *)AA(fifth)); |
927 | break; | |
928 | case SEMGET: | |
929 | err = sys_semget (first, second, third); | |
930 | break; | |
931 | case SEMCTL: | |
932 | err = do_sys32_semctl (first, second, third, | |
219ac73a | 933 | (void __user *)AA(ptr)); |
1da177e4 LT |
934 | break; |
935 | ||
936 | case MSGSND: | |
937 | err = do_sys32_msgsnd (first, second, third, | |
219ac73a | 938 | (void __user *)AA(ptr)); |
1da177e4 LT |
939 | break; |
940 | case MSGRCV: | |
941 | err = do_sys32_msgrcv (first, second, fifth, third, | |
219ac73a | 942 | version, (void __user *)AA(ptr)); |
1da177e4 LT |
943 | break; |
944 | case MSGGET: | |
945 | err = sys_msgget ((key_t) first, second); | |
946 | break; | |
947 | case MSGCTL: | |
219ac73a | 948 | err = do_sys32_msgctl (first, second, (void __user *)AA(ptr)); |
1da177e4 LT |
949 | break; |
950 | ||
951 | case SHMAT: | |
952 | err = do_sys32_shmat (first, second, third, | |
219ac73a | 953 | version, (void __user *)AA(ptr)); |
1da177e4 LT |
954 | break; |
955 | case SHMDT: | |
219ac73a | 956 | err = sys_shmdt ((char __user *)A(ptr)); |
1da177e4 LT |
957 | break; |
958 | case SHMGET: | |
959 | err = sys_shmget (first, (unsigned)second, third); | |
960 | break; | |
961 | case SHMCTL: | |
219ac73a | 962 | err = do_sys32_shmctl (first, second, (void __user *)AA(ptr)); |
1da177e4 LT |
963 | break; |
964 | default: | |
965 | err = -EINVAL; | |
966 | break; | |
967 | } | |
968 | ||
969 | return err; | |
970 | } | |
971 | ||
972 | asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, | |
219ac73a | 973 | int shmflg, int32_t __user *addr) |
1da177e4 LT |
974 | { |
975 | unsigned long raddr; | |
976 | int err; | |
977 | ||
978 | err = do_shmat(shmid, shmaddr, shmflg, &raddr); | |
979 | if (err) | |
980 | return err; | |
981 | ||
982 | return put_user(raddr, addr); | |
983 | } | |
984 | ||
985 | struct sysctl_args32 | |
986 | { | |
987 | compat_caddr_t name; | |
988 | int nlen; | |
989 | compat_caddr_t oldval; | |
990 | compat_caddr_t oldlenp; | |
991 | compat_caddr_t newval; | |
992 | compat_size_t newlen; | |
993 | unsigned int __unused[4]; | |
994 | }; | |
995 | ||
b89a8171 | 996 | #ifdef CONFIG_SYSCTL_SYSCALL |
1da177e4 | 997 | |
219ac73a | 998 | asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) |
1da177e4 LT |
999 | { |
1000 | struct sysctl_args32 tmp; | |
1001 | int error; | |
219ac73a AN |
1002 | size_t oldlen; |
1003 | size_t __user *oldlenp = NULL; | |
1004 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; | |
1da177e4 LT |
1005 | |
1006 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
1007 | return -EFAULT; | |
1008 | ||
1009 | if (tmp.oldval && tmp.oldlenp) { | |
1010 | /* Duh, this is ugly and might not work if sysctl_args | |
1011 | is in read-only memory, but do_sysctl does indirectly | |
1012 | a lot of uaccess in both directions and we'd have to | |
1013 | basically copy the whole sysctl.c here, and | |
1014 | glibc's __sysctl uses rw memory for the structure | |
1015 | anyway. */ | |
219ac73a AN |
1016 | if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || |
1017 | put_user(oldlen, (size_t __user *)addr)) | |
1da177e4 | 1018 | return -EFAULT; |
219ac73a | 1019 | oldlenp = (size_t __user *)addr; |
1da177e4 LT |
1020 | } |
1021 | ||
1022 | lock_kernel(); | |
219ac73a AN |
1023 | error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), |
1024 | oldlenp, (void __user *)A(tmp.newval), tmp.newlen); | |
1da177e4 LT |
1025 | unlock_kernel(); |
1026 | if (oldlenp) { | |
1027 | if (!error) { | |
219ac73a AN |
1028 | if (get_user(oldlen, (size_t __user *)addr) || |
1029 | put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) | |
1da177e4 LT |
1030 | error = -EFAULT; |
1031 | } | |
1032 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); | |
1033 | } | |
1034 | return error; | |
1035 | } | |
1036 | ||
b89a8171 | 1037 | #endif /* CONFIG_SYSCTL_SYSCALL */ |
1da177e4 | 1038 | |
219ac73a | 1039 | asmlinkage long sys32_newuname(struct new_utsname __user * name) |
1da177e4 LT |
1040 | { |
1041 | int ret = 0; | |
1042 | ||
1043 | down_read(&uts_sem); | |
e9ff3990 | 1044 | if (copy_to_user(name, utsname(), sizeof *name)) |
1da177e4 LT |
1045 | ret = -EFAULT; |
1046 | up_read(&uts_sem); | |
1047 | ||
1048 | if (current->personality == PER_LINUX32 && !ret) | |
1049 | if (copy_to_user(name->machine, "mips\0\0\0", 8)) | |
1050 | ret = -EFAULT; | |
1051 | ||
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | asmlinkage int sys32_personality(unsigned long personality) | |
1056 | { | |
1057 | int ret; | |
1058 | if (current->personality == PER_LINUX32 && personality == PER_LINUX) | |
1059 | personality = PER_LINUX32; | |
1060 | ret = sys_personality(personality); | |
1061 | if (ret == PER_LINUX32) | |
1062 | ret = PER_LINUX; | |
1063 | return ret; | |
1064 | } | |
1065 | ||
1066 | /* ustat compatibility */ | |
1067 | struct ustat32 { | |
1068 | compat_daddr_t f_tfree; | |
1069 | compat_ino_t f_tinode; | |
1070 | char f_fname[6]; | |
1071 | char f_fpack[6]; | |
1072 | }; | |
1073 | ||
219ac73a | 1074 | extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf); |
1da177e4 | 1075 | |
219ac73a | 1076 | asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32) |
1da177e4 LT |
1077 | { |
1078 | int err; | |
1079 | struct ustat tmp; | |
1080 | struct ustat32 tmp32; | |
1081 | mm_segment_t old_fs = get_fs(); | |
1082 | ||
1083 | set_fs(KERNEL_DS); | |
219ac73a | 1084 | err = sys_ustat(dev, (struct ustat __user *)&tmp); |
1da177e4 LT |
1085 | set_fs (old_fs); |
1086 | ||
1087 | if (err) | |
1088 | goto out; | |
1089 | ||
1090 | memset(&tmp32,0,sizeof(struct ustat32)); | |
1091 | tmp32.f_tfree = tmp.f_tfree; | |
1092 | tmp32.f_tinode = tmp.f_tinode; | |
1093 | ||
1094 | err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0; | |
1095 | ||
1096 | out: | |
1097 | return err; | |
1098 | } | |
1099 | ||
219ac73a | 1100 | asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, |
1da177e4 LT |
1101 | s32 count) |
1102 | { | |
1103 | mm_segment_t old_fs = get_fs(); | |
1104 | int ret; | |
1105 | off_t of; | |
42a3b4f2 | 1106 | |
1da177e4 LT |
1107 | if (offset && get_user(of, offset)) |
1108 | return -EFAULT; | |
42a3b4f2 | 1109 | |
1da177e4 | 1110 | set_fs(KERNEL_DS); |
219ac73a | 1111 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); |
1da177e4 | 1112 | set_fs(old_fs); |
42a3b4f2 | 1113 | |
1da177e4 LT |
1114 | if (offset && put_user(of, offset)) |
1115 | return -EFAULT; | |
42a3b4f2 | 1116 | |
1da177e4 LT |
1117 | return ret; |
1118 | } | |
1119 | ||
1120 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, | |
1121 | size_t count) | |
1122 | { | |
1123 | return sys_readahead(fd, merge_64(a2, a3), count); | |
1124 | } | |
1125 | ||
a8d587a7 RB |
1126 | asmlinkage long sys32_sync_file_range(int fd, int __pad, |
1127 | unsigned long a2, unsigned long a3, | |
1128 | unsigned long a4, unsigned long a5, | |
1129 | int flags) | |
1130 | { | |
1131 | return sys_sync_file_range(fd, | |
1132 | merge_64(a2, a3), merge_64(a4, a5), | |
1133 | flags); | |
1134 | } | |
1135 | ||
1da177e4 LT |
1136 | /* Argument list sizes for sys_socketcall */ |
1137 | #define AL(x) ((x) * sizeof(unsigned int)) | |
1138 | static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), | |
1139 | AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), | |
1140 | AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; | |
1141 | #undef AL | |
1142 | ||
1143 | /* | |
42a3b4f2 | 1144 | * System call vectors. |
1da177e4 LT |
1145 | * |
1146 | * Argument checking cleaned up. Saved 20% in size. | |
1147 | * This function doesn't need to set the kernel lock because | |
42a3b4f2 | 1148 | * it is set by the callees. |
1da177e4 LT |
1149 | */ |
1150 | ||
219ac73a | 1151 | asmlinkage long sys32_socketcall(int call, unsigned int __user *args32) |
1da177e4 LT |
1152 | { |
1153 | unsigned int a[6]; | |
1154 | unsigned int a0,a1; | |
1155 | int err; | |
1156 | ||
1157 | extern asmlinkage long sys_socket(int family, int type, int protocol); | |
1158 | extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); | |
1159 | extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); | |
1160 | extern asmlinkage long sys_listen(int fd, int backlog); | |
1161 | extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen); | |
1162 | extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
1163 | extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
1164 | extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec); | |
1165 | extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags); | |
1166 | extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, | |
1167 | struct sockaddr __user *addr, int addr_len); | |
1168 | extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags); | |
1169 | extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, | |
1170 | struct sockaddr __user *addr, int __user *addr_len); | |
1171 | extern asmlinkage long sys_shutdown(int fd, int how); | |
1172 | extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); | |
219ac73a | 1173 | extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen); |
1da177e4 LT |
1174 | extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); |
1175 | extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags); | |
1176 | ||
1177 | ||
1178 | if(call<1||call>SYS_RECVMSG) | |
1179 | return -EINVAL; | |
1180 | ||
1181 | /* copy_from_user should be SMP safe. */ | |
1182 | if (copy_from_user(a, args32, socketcall_nargs[call])) | |
1183 | return -EFAULT; | |
42a3b4f2 | 1184 | |
1da177e4 LT |
1185 | a0=a[0]; |
1186 | a1=a[1]; | |
42a3b4f2 RB |
1187 | |
1188 | switch(call) | |
1da177e4 LT |
1189 | { |
1190 | case SYS_SOCKET: | |
1191 | err = sys_socket(a0,a1,a[2]); | |
1192 | break; | |
1193 | case SYS_BIND: | |
1194 | err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]); | |
1195 | break; | |
1196 | case SYS_CONNECT: | |
1197 | err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]); | |
1198 | break; | |
1199 | case SYS_LISTEN: | |
1200 | err = sys_listen(a0,a1); | |
1201 | break; | |
1202 | case SYS_ACCEPT: | |
1203 | err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1204 | break; | |
1205 | case SYS_GETSOCKNAME: | |
1206 | err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1207 | break; | |
1208 | case SYS_GETPEERNAME: | |
1209 | err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1210 | break; | |
1211 | case SYS_SOCKETPAIR: | |
1212 | err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3])); | |
1213 | break; | |
1214 | case SYS_SEND: | |
1215 | err = sys_send(a0, (void __user *)A(a1), a[2], a[3]); | |
1216 | break; | |
1217 | case SYS_SENDTO: | |
1218 | err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3], | |
1219 | (struct sockaddr __user *)A(a[4]), a[5]); | |
1220 | break; | |
1221 | case SYS_RECV: | |
1222 | err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]); | |
1223 | break; | |
1224 | case SYS_RECVFROM: | |
1225 | err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3], | |
1226 | (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5])); | |
1227 | break; | |
1228 | case SYS_SHUTDOWN: | |
1229 | err = sys_shutdown(a0,a1); | |
1230 | break; | |
1231 | case SYS_SETSOCKOPT: | |
1232 | err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]); | |
1233 | break; | |
1234 | case SYS_GETSOCKOPT: | |
1235 | err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4])); | |
1236 | break; | |
1237 | case SYS_SENDMSG: | |
1238 | err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
1239 | break; | |
1240 | case SYS_RECVMSG: | |
1241 | err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
1242 | break; | |
1243 | default: | |
1244 | err = -EINVAL; | |
1245 | break; | |
1246 | } | |
1247 | return err; | |
1248 | } | |
d1abb6a2 RB |
1249 | |
1250 | struct sigevent32 { | |
1251 | u32 sigev_value; | |
1252 | u32 sigev_signo; | |
1253 | u32 sigev_notify; | |
1254 | u32 payload[(64 / 4) - 3]; | |
1255 | }; | |
1256 | ||
1257 | extern asmlinkage long | |
1258 | sys_timer_create(clockid_t which_clock, | |
1259 | struct sigevent __user *timer_event_spec, | |
1260 | timer_t __user * created_timer_id); | |
1261 | ||
1262 | long | |
1263 | sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id) | |
1264 | { | |
1265 | struct sigevent __user *p = NULL; | |
1266 | if (se32) { | |
1267 | struct sigevent se; | |
1268 | p = compat_alloc_user_space(sizeof(struct sigevent)); | |
1269 | memset(&se, 0, sizeof(struct sigevent)); | |
1270 | if (get_user(se.sigev_value.sival_int, &se32->sigev_value) || | |
1271 | __get_user(se.sigev_signo, &se32->sigev_signo) || | |
1272 | __get_user(se.sigev_notify, &se32->sigev_notify) || | |
1273 | __copy_from_user(&se._sigev_un._pad, &se32->payload, | |
1274 | sizeof(se32->payload)) || | |
1275 | copy_to_user(p, &se, sizeof(se))) | |
1276 | return -EFAULT; | |
1277 | } | |
1278 | return sys_timer_create(clock, p, timer_id); | |
1279 | } | |
1280 | ||
3c37026d RB |
1281 | save_static_function(sys32_clone); |
1282 | __attribute_used__ noinline static int | |
1283 | _sys32_clone(nabi_no_regargs struct pt_regs regs) | |
1284 | { | |
1285 | unsigned long clone_flags; | |
1286 | unsigned long newsp; | |
1287 | int __user *parent_tidptr, *child_tidptr; | |
1288 | ||
1289 | clone_flags = regs.regs[4]; | |
1290 | newsp = regs.regs[5]; | |
1291 | if (!newsp) | |
1292 | newsp = regs.regs[29]; | |
219ac73a | 1293 | parent_tidptr = (int __user *) regs.regs[6]; |
3c37026d RB |
1294 | |
1295 | /* Use __dummy4 instead of getting it off the stack, so that | |
1296 | syscall() works. */ | |
1297 | child_tidptr = (int __user *) __dummy4; | |
1298 | return do_fork(clone_flags, newsp, ®s, 0, | |
1299 | parent_tidptr, child_tidptr); | |
1300 | } |