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1da177e4 LT |
1 | /* $Id: sys_sparc32.c,v 1.184 2002/02/09 19:49:31 davem Exp $ |
2 | * sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. | |
3 | * | |
4 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
5 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) | |
6 | * | |
7 | * These routines maintain argument size conversion between 32bit and 64bit | |
8 | * environment. | |
9 | */ | |
10 | ||
11 | #include <linux/config.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/sched.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/mm.h> | |
16 | #include <linux/file.h> | |
17 | #include <linux/signal.h> | |
18 | #include <linux/resource.h> | |
19 | #include <linux/times.h> | |
20 | #include <linux/utsname.h> | |
21 | #include <linux/timex.h> | |
22 | #include <linux/smp.h> | |
23 | #include <linux/smp_lock.h> | |
24 | #include <linux/sem.h> | |
25 | #include <linux/msg.h> | |
26 | #include <linux/shm.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/uio.h> | |
29 | #include <linux/nfs_fs.h> | |
30 | #include <linux/quota.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/sunrpc/svc.h> | |
33 | #include <linux/nfsd/nfsd.h> | |
34 | #include <linux/nfsd/cache.h> | |
35 | #include <linux/nfsd/xdr.h> | |
36 | #include <linux/nfsd/syscall.h> | |
37 | #include <linux/poll.h> | |
38 | #include <linux/personality.h> | |
39 | #include <linux/stat.h> | |
40 | #include <linux/filter.h> | |
41 | #include <linux/highmem.h> | |
42 | #include <linux/highuid.h> | |
43 | #include <linux/mman.h> | |
44 | #include <linux/ipv6.h> | |
45 | #include <linux/in.h> | |
46 | #include <linux/icmpv6.h> | |
47 | #include <linux/syscalls.h> | |
48 | #include <linux/sysctl.h> | |
49 | #include <linux/binfmts.h> | |
50 | #include <linux/dnotify.h> | |
51 | #include <linux/security.h> | |
52 | #include <linux/compat.h> | |
53 | #include <linux/vfs.h> | |
54 | #include <linux/netfilter_ipv4/ip_tables.h> | |
55 | #include <linux/ptrace.h> | |
56 | #include <linux/highuid.h> | |
57 | ||
58 | #include <asm/types.h> | |
59 | #include <asm/ipc.h> | |
60 | #include <asm/uaccess.h> | |
61 | #include <asm/fpumacro.h> | |
62 | #include <asm/semaphore.h> | |
63 | #include <asm/mmu_context.h> | |
64 | ||
65 | asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group) | |
66 | { | |
67 | return sys_chown(filename, low2highuid(user), low2highgid(group)); | |
68 | } | |
69 | ||
70 | asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group) | |
71 | { | |
72 | return sys_lchown(filename, low2highuid(user), low2highgid(group)); | |
73 | } | |
74 | ||
75 | asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group) | |
76 | { | |
77 | return sys_fchown(fd, low2highuid(user), low2highgid(group)); | |
78 | } | |
79 | ||
80 | asmlinkage long sys32_setregid16(u16 rgid, u16 egid) | |
81 | { | |
82 | return sys_setregid(low2highgid(rgid), low2highgid(egid)); | |
83 | } | |
84 | ||
85 | asmlinkage long sys32_setgid16(u16 gid) | |
86 | { | |
87 | return sys_setgid((gid_t)gid); | |
88 | } | |
89 | ||
90 | asmlinkage long sys32_setreuid16(u16 ruid, u16 euid) | |
91 | { | |
92 | return sys_setreuid(low2highuid(ruid), low2highuid(euid)); | |
93 | } | |
94 | ||
95 | asmlinkage long sys32_setuid16(u16 uid) | |
96 | { | |
97 | return sys_setuid((uid_t)uid); | |
98 | } | |
99 | ||
100 | asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid) | |
101 | { | |
102 | return sys_setresuid(low2highuid(ruid), low2highuid(euid), | |
103 | low2highuid(suid)); | |
104 | } | |
105 | ||
106 | asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid) | |
107 | { | |
108 | int retval; | |
109 | ||
110 | if (!(retval = put_user(high2lowuid(current->uid), ruid)) && | |
111 | !(retval = put_user(high2lowuid(current->euid), euid))) | |
112 | retval = put_user(high2lowuid(current->suid), suid); | |
113 | ||
114 | return retval; | |
115 | } | |
116 | ||
117 | asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid) | |
118 | { | |
119 | return sys_setresgid(low2highgid(rgid), low2highgid(egid), | |
120 | low2highgid(sgid)); | |
121 | } | |
122 | ||
123 | asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid) | |
124 | { | |
125 | int retval; | |
126 | ||
127 | if (!(retval = put_user(high2lowgid(current->gid), rgid)) && | |
128 | !(retval = put_user(high2lowgid(current->egid), egid))) | |
129 | retval = put_user(high2lowgid(current->sgid), sgid); | |
130 | ||
131 | return retval; | |
132 | } | |
133 | ||
134 | asmlinkage long sys32_setfsuid16(u16 uid) | |
135 | { | |
136 | return sys_setfsuid((uid_t)uid); | |
137 | } | |
138 | ||
139 | asmlinkage long sys32_setfsgid16(u16 gid) | |
140 | { | |
141 | return sys_setfsgid((gid_t)gid); | |
142 | } | |
143 | ||
144 | static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info) | |
145 | { | |
146 | int i; | |
147 | u16 group; | |
148 | ||
149 | for (i = 0; i < group_info->ngroups; i++) { | |
150 | group = (u16)GROUP_AT(group_info, i); | |
151 | if (put_user(group, grouplist+i)) | |
152 | return -EFAULT; | |
153 | } | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist) | |
159 | { | |
160 | int i; | |
161 | u16 group; | |
162 | ||
163 | for (i = 0; i < group_info->ngroups; i++) { | |
164 | if (get_user(group, grouplist+i)) | |
165 | return -EFAULT; | |
166 | GROUP_AT(group_info, i) = (gid_t)group; | |
167 | } | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist) | |
173 | { | |
174 | int i; | |
175 | ||
176 | if (gidsetsize < 0) | |
177 | return -EINVAL; | |
178 | ||
179 | get_group_info(current->group_info); | |
180 | i = current->group_info->ngroups; | |
181 | if (gidsetsize) { | |
182 | if (i > gidsetsize) { | |
183 | i = -EINVAL; | |
184 | goto out; | |
185 | } | |
186 | if (groups16_to_user(grouplist, current->group_info)) { | |
187 | i = -EFAULT; | |
188 | goto out; | |
189 | } | |
190 | } | |
191 | out: | |
192 | put_group_info(current->group_info); | |
193 | return i; | |
194 | } | |
195 | ||
196 | asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist) | |
197 | { | |
198 | struct group_info *group_info; | |
199 | int retval; | |
200 | ||
201 | if (!capable(CAP_SETGID)) | |
202 | return -EPERM; | |
203 | if ((unsigned)gidsetsize > NGROUPS_MAX) | |
204 | return -EINVAL; | |
205 | ||
206 | group_info = groups_alloc(gidsetsize); | |
207 | if (!group_info) | |
208 | return -ENOMEM; | |
209 | retval = groups16_from_user(group_info, grouplist); | |
210 | if (retval) { | |
211 | put_group_info(group_info); | |
212 | return retval; | |
213 | } | |
214 | ||
215 | retval = set_current_groups(group_info); | |
216 | put_group_info(group_info); | |
217 | ||
218 | return retval; | |
219 | } | |
220 | ||
221 | asmlinkage long sys32_getuid16(void) | |
222 | { | |
223 | return high2lowuid(current->uid); | |
224 | } | |
225 | ||
226 | asmlinkage long sys32_geteuid16(void) | |
227 | { | |
228 | return high2lowuid(current->euid); | |
229 | } | |
230 | ||
231 | asmlinkage long sys32_getgid16(void) | |
232 | { | |
233 | return high2lowgid(current->gid); | |
234 | } | |
235 | ||
236 | asmlinkage long sys32_getegid16(void) | |
237 | { | |
238 | return high2lowgid(current->egid); | |
239 | } | |
240 | ||
241 | /* 32-bit timeval and related flotsam. */ | |
242 | ||
243 | static long get_tv32(struct timeval *o, struct compat_timeval __user *i) | |
244 | { | |
245 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
246 | (__get_user(o->tv_sec, &i->tv_sec) | | |
247 | __get_user(o->tv_usec, &i->tv_usec))); | |
248 | } | |
249 | ||
250 | static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) | |
251 | { | |
252 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
253 | (__put_user(i->tv_sec, &o->tv_sec) | | |
254 | __put_user(i->tv_usec, &o->tv_usec))); | |
255 | } | |
256 | ||
257 | #ifdef CONFIG_SYSVIPC | |
258 | asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth) | |
259 | { | |
260 | int version; | |
261 | ||
262 | version = call >> 16; /* hack for backward compatibility */ | |
263 | call &= 0xffff; | |
264 | ||
265 | switch (call) { | |
266 | case SEMTIMEDOP: | |
267 | if (fifth) | |
268 | /* sign extend semid */ | |
269 | return compat_sys_semtimedop((int)first, | |
270 | compat_ptr(ptr), second, | |
271 | compat_ptr(fifth)); | |
272 | /* else fall through for normal semop() */ | |
273 | case SEMOP: | |
274 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
275 | /* sign extend semid */ | |
276 | return sys_semtimedop((int)first, compat_ptr(ptr), second, | |
277 | NULL); | |
278 | case SEMGET: | |
279 | /* sign extend key, nsems */ | |
280 | return sys_semget((int)first, (int)second, third); | |
281 | case SEMCTL: | |
282 | /* sign extend semid, semnum */ | |
283 | return compat_sys_semctl((int)first, (int)second, third, | |
284 | compat_ptr(ptr)); | |
285 | ||
286 | case MSGSND: | |
287 | /* sign extend msqid */ | |
288 | return compat_sys_msgsnd((int)first, (int)second, third, | |
289 | compat_ptr(ptr)); | |
290 | case MSGRCV: | |
291 | /* sign extend msqid, msgtyp */ | |
292 | return compat_sys_msgrcv((int)first, second, (int)fifth, | |
293 | third, version, compat_ptr(ptr)); | |
294 | case MSGGET: | |
295 | /* sign extend key */ | |
296 | return sys_msgget((int)first, second); | |
297 | case MSGCTL: | |
298 | /* sign extend msqid */ | |
299 | return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); | |
300 | ||
301 | case SHMAT: | |
302 | /* sign extend shmid */ | |
303 | return compat_sys_shmat((int)first, second, third, version, | |
304 | compat_ptr(ptr)); | |
305 | case SHMDT: | |
306 | return sys_shmdt(compat_ptr(ptr)); | |
307 | case SHMGET: | |
308 | /* sign extend key_t */ | |
309 | return sys_shmget((int)first, second, third); | |
310 | case SHMCTL: | |
311 | /* sign extend shmid */ | |
312 | return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); | |
313 | ||
314 | default: | |
315 | return -ENOSYS; | |
316 | }; | |
317 | ||
318 | return -ENOSYS; | |
319 | } | |
320 | #endif | |
321 | ||
322 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) | |
323 | { | |
324 | if ((int)high < 0) | |
325 | return -EINVAL; | |
326 | else | |
327 | return sys_truncate(path, (high << 32) | low); | |
328 | } | |
329 | ||
330 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) | |
331 | { | |
332 | if ((int)high < 0) | |
333 | return -EINVAL; | |
334 | else | |
335 | return sys_ftruncate(fd, (high << 32) | low); | |
336 | } | |
337 | ||
338 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) | |
339 | { | |
340 | int err; | |
341 | ||
342 | if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) || | |
343 | !old_valid_dev(stat->rdev)) | |
344 | return -EOVERFLOW; | |
345 | ||
346 | err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev); | |
347 | err |= put_user(stat->ino, &statbuf->st_ino); | |
348 | err |= put_user(stat->mode, &statbuf->st_mode); | |
349 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
350 | err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid); | |
351 | err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid); | |
352 | err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev); | |
353 | err |= put_user(stat->size, &statbuf->st_size); | |
354 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
0ba4da03 | 355 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); |
1da177e4 | 356 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); |
0ba4da03 | 357 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); |
1da177e4 | 358 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); |
0ba4da03 | 359 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); |
1da177e4 LT |
360 | err |= put_user(stat->blksize, &statbuf->st_blksize); |
361 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
362 | err |= put_user(0, &statbuf->__unused4[0]); | |
363 | err |= put_user(0, &statbuf->__unused4[1]); | |
364 | ||
365 | return err; | |
366 | } | |
367 | ||
0ba4da03 DM |
368 | int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf) |
369 | { | |
370 | int err; | |
371 | ||
372 | err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); | |
373 | err |= put_user(stat->ino, &statbuf->st_ino); | |
374 | err |= put_user(stat->mode, &statbuf->st_mode); | |
375 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
376 | err |= put_user(stat->uid, &statbuf->st_uid); | |
377 | err |= put_user(stat->gid, &statbuf->st_gid); | |
378 | err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); | |
379 | err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); | |
380 | err |= put_user(stat->size, &statbuf->st_size); | |
381 | err |= put_user(stat->blksize, &statbuf->st_blksize); | |
382 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); | |
383 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); | |
384 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
385 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
386 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); | |
387 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); | |
388 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); | |
389 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); | |
390 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); | |
391 | err |= put_user(0, &statbuf->__unused4); | |
392 | err |= put_user(0, &statbuf->__unused5); | |
393 | ||
394 | return err; | |
395 | } | |
396 | ||
397 | asmlinkage long compat_sys_stat64(char __user * filename, | |
398 | struct compat_stat64 __user *statbuf) | |
399 | { | |
400 | struct kstat stat; | |
401 | int error = vfs_stat(filename, &stat); | |
402 | ||
403 | if (!error) | |
404 | error = cp_compat_stat64(&stat, statbuf); | |
405 | return error; | |
406 | } | |
407 | ||
408 | asmlinkage long compat_sys_lstat64(char __user * filename, | |
409 | struct compat_stat64 __user *statbuf) | |
410 | { | |
411 | struct kstat stat; | |
412 | int error = vfs_lstat(filename, &stat); | |
413 | ||
414 | if (!error) | |
415 | error = cp_compat_stat64(&stat, statbuf); | |
416 | return error; | |
417 | } | |
418 | ||
419 | asmlinkage long compat_sys_fstat64(unsigned int fd, | |
420 | struct compat_stat64 __user * statbuf) | |
421 | { | |
422 | struct kstat stat; | |
423 | int error = vfs_fstat(fd, &stat); | |
424 | ||
425 | if (!error) | |
426 | error = cp_compat_stat64(&stat, statbuf); | |
427 | return error; | |
428 | } | |
429 | ||
1da177e4 LT |
430 | asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) |
431 | { | |
432 | return sys_sysfs(option, arg1, arg2); | |
433 | } | |
434 | ||
435 | struct sysinfo32 { | |
436 | s32 uptime; | |
437 | u32 loads[3]; | |
438 | u32 totalram; | |
439 | u32 freeram; | |
440 | u32 sharedram; | |
441 | u32 bufferram; | |
442 | u32 totalswap; | |
443 | u32 freeswap; | |
444 | unsigned short procs; | |
445 | unsigned short pad; | |
446 | u32 totalhigh; | |
447 | u32 freehigh; | |
448 | u32 mem_unit; | |
449 | char _f[20-2*sizeof(int)-sizeof(int)]; | |
450 | }; | |
451 | ||
452 | asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) | |
453 | { | |
454 | struct sysinfo s; | |
455 | int ret, err; | |
456 | int bitcount = 0; | |
457 | mm_segment_t old_fs = get_fs (); | |
458 | ||
459 | set_fs(KERNEL_DS); | |
460 | ret = sys_sysinfo((struct sysinfo __user *) &s); | |
461 | set_fs(old_fs); | |
462 | /* Check to see if any memory value is too large for 32-bit and | |
463 | * scale down if needed. | |
464 | */ | |
465 | if ((s.totalram >> 32) || (s.totalswap >> 32)) { | |
466 | while (s.mem_unit < PAGE_SIZE) { | |
467 | s.mem_unit <<= 1; | |
468 | bitcount++; | |
469 | } | |
470 | s.totalram >>= bitcount; | |
471 | s.freeram >>= bitcount; | |
472 | s.sharedram >>= bitcount; | |
473 | s.bufferram >>= bitcount; | |
474 | s.totalswap >>= bitcount; | |
475 | s.freeswap >>= bitcount; | |
476 | s.totalhigh >>= bitcount; | |
477 | s.freehigh >>= bitcount; | |
478 | } | |
479 | ||
480 | err = put_user (s.uptime, &info->uptime); | |
481 | err |= __put_user (s.loads[0], &info->loads[0]); | |
482 | err |= __put_user (s.loads[1], &info->loads[1]); | |
483 | err |= __put_user (s.loads[2], &info->loads[2]); | |
484 | err |= __put_user (s.totalram, &info->totalram); | |
485 | err |= __put_user (s.freeram, &info->freeram); | |
486 | err |= __put_user (s.sharedram, &info->sharedram); | |
487 | err |= __put_user (s.bufferram, &info->bufferram); | |
488 | err |= __put_user (s.totalswap, &info->totalswap); | |
489 | err |= __put_user (s.freeswap, &info->freeswap); | |
490 | err |= __put_user (s.procs, &info->procs); | |
491 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
492 | err |= __put_user (s.freehigh, &info->freehigh); | |
493 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
494 | if (err) | |
495 | return -EFAULT; | |
496 | return ret; | |
497 | } | |
498 | ||
499 | asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) | |
500 | { | |
501 | struct timespec t; | |
502 | int ret; | |
503 | mm_segment_t old_fs = get_fs (); | |
504 | ||
505 | set_fs (KERNEL_DS); | |
506 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t); | |
507 | set_fs (old_fs); | |
508 | if (put_compat_timespec(&t, interval)) | |
509 | return -EFAULT; | |
510 | return ret; | |
511 | } | |
512 | ||
513 | asmlinkage long compat_sys_rt_sigprocmask(int how, | |
514 | compat_sigset_t __user *set, | |
515 | compat_sigset_t __user *oset, | |
516 | compat_size_t sigsetsize) | |
517 | { | |
518 | sigset_t s; | |
519 | compat_sigset_t s32; | |
520 | int ret; | |
521 | mm_segment_t old_fs = get_fs(); | |
522 | ||
523 | if (set) { | |
524 | if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) | |
525 | return -EFAULT; | |
526 | switch (_NSIG_WORDS) { | |
527 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); | |
528 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); | |
529 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); | |
530 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); | |
531 | } | |
532 | } | |
533 | set_fs (KERNEL_DS); | |
534 | ret = sys_rt_sigprocmask(how, | |
535 | set ? (sigset_t __user *) &s : NULL, | |
536 | oset ? (sigset_t __user *) &s : NULL, | |
537 | sigsetsize); | |
538 | set_fs (old_fs); | |
539 | if (ret) return ret; | |
540 | if (oset) { | |
541 | switch (_NSIG_WORDS) { | |
542 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
543 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
544 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
545 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
546 | } | |
547 | if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) | |
548 | return -EFAULT; | |
549 | } | |
550 | return 0; | |
551 | } | |
552 | ||
553 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, | |
554 | compat_size_t sigsetsize) | |
555 | { | |
556 | sigset_t s; | |
557 | compat_sigset_t s32; | |
558 | int ret; | |
559 | mm_segment_t old_fs = get_fs(); | |
560 | ||
561 | set_fs (KERNEL_DS); | |
562 | ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); | |
563 | set_fs (old_fs); | |
564 | if (!ret) { | |
565 | switch (_NSIG_WORDS) { | |
566 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
567 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
568 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
569 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
570 | } | |
571 | if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) | |
572 | return -EFAULT; | |
573 | } | |
574 | return ret; | |
575 | } | |
576 | ||
577 | asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, | |
578 | struct compat_siginfo __user *uinfo) | |
579 | { | |
580 | siginfo_t info; | |
581 | int ret; | |
582 | mm_segment_t old_fs = get_fs(); | |
583 | ||
584 | if (copy_siginfo_from_user32(&info, uinfo)) | |
585 | return -EFAULT; | |
586 | ||
587 | set_fs (KERNEL_DS); | |
588 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); | |
589 | set_fs (old_fs); | |
590 | return ret; | |
591 | } | |
592 | ||
593 | asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, | |
594 | struct old_sigaction32 __user *oact) | |
595 | { | |
596 | struct k_sigaction new_ka, old_ka; | |
597 | int ret; | |
598 | ||
599 | if (sig < 0) { | |
600 | set_thread_flag(TIF_NEWSIGNALS); | |
601 | sig = -sig; | |
602 | } | |
603 | ||
604 | if (act) { | |
605 | compat_old_sigset_t mask; | |
606 | u32 u_handler, u_restorer; | |
607 | ||
608 | ret = get_user(u_handler, &act->sa_handler); | |
609 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
610 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
611 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
612 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
613 | ret |= __get_user(mask, &act->sa_mask); | |
614 | if (ret) | |
615 | return ret; | |
616 | new_ka.ka_restorer = NULL; | |
617 | siginitset(&new_ka.sa.sa_mask, mask); | |
618 | } | |
619 | ||
620 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
621 | ||
622 | if (!ret && oact) { | |
623 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
624 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
625 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
626 | ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); | |
627 | } | |
628 | ||
629 | return ret; | |
630 | } | |
631 | ||
632 | asmlinkage long compat_sys_rt_sigaction(int sig, | |
633 | struct sigaction32 __user *act, | |
634 | struct sigaction32 __user *oact, | |
635 | void __user *restorer, | |
636 | compat_size_t sigsetsize) | |
637 | { | |
638 | struct k_sigaction new_ka, old_ka; | |
639 | int ret; | |
640 | compat_sigset_t set32; | |
641 | ||
642 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
643 | if (sigsetsize != sizeof(compat_sigset_t)) | |
644 | return -EINVAL; | |
645 | ||
646 | /* All tasks which use RT signals (effectively) use | |
647 | * new style signals. | |
648 | */ | |
649 | set_thread_flag(TIF_NEWSIGNALS); | |
650 | ||
651 | if (act) { | |
652 | u32 u_handler, u_restorer; | |
653 | ||
654 | new_ka.ka_restorer = restorer; | |
655 | ret = get_user(u_handler, &act->sa_handler); | |
656 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
657 | ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); | |
658 | switch (_NSIG_WORDS) { | |
659 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); | |
660 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); | |
661 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); | |
662 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); | |
663 | } | |
664 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
665 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
666 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
667 | if (ret) | |
668 | return -EFAULT; | |
669 | } | |
670 | ||
671 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
672 | ||
673 | if (!ret && oact) { | |
674 | switch (_NSIG_WORDS) { | |
675 | case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; | |
676 | case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; | |
677 | case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; | |
678 | case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; | |
679 | } | |
680 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
681 | ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); | |
682 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
683 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
684 | if (ret) | |
685 | ret = -EFAULT; | |
686 | } | |
687 | ||
688 | return ret; | |
689 | } | |
690 | ||
691 | /* | |
692 | * sparc32_execve() executes a new program after the asm stub has set | |
693 | * things up for us. This should basically do what I want it to. | |
694 | */ | |
695 | asmlinkage long sparc32_execve(struct pt_regs *regs) | |
696 | { | |
697 | int error, base = 0; | |
698 | char *filename; | |
699 | ||
700 | /* User register window flush is done by entry.S */ | |
701 | ||
702 | /* Check for indirect call. */ | |
703 | if ((u32)regs->u_regs[UREG_G1] == 0) | |
704 | base = 1; | |
705 | ||
706 | filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); | |
707 | error = PTR_ERR(filename); | |
708 | if (IS_ERR(filename)) | |
709 | goto out; | |
710 | ||
711 | error = compat_do_execve(filename, | |
712 | compat_ptr(regs->u_regs[base + UREG_I1]), | |
713 | compat_ptr(regs->u_regs[base + UREG_I2]), regs); | |
714 | ||
715 | putname(filename); | |
716 | ||
717 | if (!error) { | |
718 | fprs_write(0); | |
719 | current_thread_info()->xfsr[0] = 0; | |
720 | current_thread_info()->fpsaved[0] = 0; | |
721 | regs->tstate &= ~TSTATE_PEF; | |
722 | task_lock(current); | |
723 | current->ptrace &= ~PT_DTRACE; | |
724 | task_unlock(current); | |
725 | } | |
726 | out: | |
727 | return error; | |
728 | } | |
729 | ||
730 | #ifdef CONFIG_MODULES | |
731 | ||
732 | asmlinkage long sys32_init_module(void __user *umod, u32 len, | |
733 | const char __user *uargs) | |
734 | { | |
735 | return sys_init_module(umod, len, uargs); | |
736 | } | |
737 | ||
738 | asmlinkage long sys32_delete_module(const char __user *name_user, | |
739 | unsigned int flags) | |
740 | { | |
741 | return sys_delete_module(name_user, flags); | |
742 | } | |
743 | ||
744 | #else /* CONFIG_MODULES */ | |
745 | ||
746 | asmlinkage long sys32_init_module(const char __user *name_user, | |
747 | struct module __user *mod_user) | |
748 | { | |
749 | return -ENOSYS; | |
750 | } | |
751 | ||
752 | asmlinkage long sys32_delete_module(const char __user *name_user) | |
753 | { | |
754 | return -ENOSYS; | |
755 | } | |
756 | ||
757 | #endif /* CONFIG_MODULES */ | |
758 | ||
759 | /* Translations due to time_t size differences. Which affects all | |
760 | sorts of things, like timeval and itimerval. */ | |
761 | ||
762 | extern struct timezone sys_tz; | |
763 | ||
764 | asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, | |
765 | struct timezone __user *tz) | |
766 | { | |
767 | if (tv) { | |
768 | struct timeval ktv; | |
769 | do_gettimeofday(&ktv); | |
770 | if (put_tv32(tv, &ktv)) | |
771 | return -EFAULT; | |
772 | } | |
773 | if (tz) { | |
774 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
775 | return -EFAULT; | |
776 | } | |
777 | return 0; | |
778 | } | |
779 | ||
780 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) | |
781 | { | |
782 | long usec; | |
783 | ||
784 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
785 | return -EFAULT; | |
786 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
787 | return -EFAULT; | |
788 | if (__get_user(usec, &i->tv_usec)) | |
789 | return -EFAULT; | |
790 | o->tv_nsec = usec * 1000; | |
791 | return 0; | |
792 | } | |
793 | ||
794 | asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, | |
795 | struct timezone __user *tz) | |
796 | { | |
797 | struct timespec kts; | |
798 | struct timezone ktz; | |
799 | ||
800 | if (tv) { | |
801 | if (get_ts32(&kts, tv)) | |
802 | return -EFAULT; | |
803 | } | |
804 | if (tz) { | |
805 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
806 | return -EFAULT; | |
807 | } | |
808 | ||
809 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
810 | } | |
811 | ||
812 | asmlinkage long sys32_utimes(char __user *filename, | |
813 | struct compat_timeval __user *tvs) | |
814 | { | |
815 | struct timeval ktvs[2]; | |
816 | ||
817 | if (tvs) { | |
818 | if (get_tv32(&ktvs[0], tvs) || | |
819 | get_tv32(&ktvs[1], 1+tvs)) | |
820 | return -EFAULT; | |
821 | } | |
822 | ||
823 | return do_utimes(filename, (tvs ? &ktvs[0] : NULL)); | |
824 | } | |
825 | ||
826 | /* These are here just in case some old sparc32 binary calls it. */ | |
827 | asmlinkage long sys32_pause(void) | |
828 | { | |
829 | current->state = TASK_INTERRUPTIBLE; | |
830 | schedule(); | |
831 | return -ERESTARTNOHAND; | |
832 | } | |
833 | ||
834 | asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, | |
835 | char __user *ubuf, | |
836 | compat_size_t count, | |
837 | unsigned long poshi, | |
838 | unsigned long poslo) | |
839 | { | |
840 | return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); | |
841 | } | |
842 | ||
843 | asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, | |
844 | char __user *ubuf, | |
845 | compat_size_t count, | |
846 | unsigned long poshi, | |
847 | unsigned long poslo) | |
848 | { | |
849 | return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); | |
850 | } | |
851 | ||
852 | asmlinkage long compat_sys_readahead(int fd, | |
853 | unsigned long offhi, | |
854 | unsigned long offlo, | |
855 | compat_size_t count) | |
856 | { | |
857 | return sys_readahead(fd, (offhi << 32) | offlo, count); | |
858 | } | |
859 | ||
860 | long compat_sys_fadvise64(int fd, | |
861 | unsigned long offhi, | |
862 | unsigned long offlo, | |
863 | compat_size_t len, int advice) | |
864 | { | |
865 | return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); | |
866 | } | |
867 | ||
868 | long compat_sys_fadvise64_64(int fd, | |
869 | unsigned long offhi, unsigned long offlo, | |
870 | unsigned long lenhi, unsigned long lenlo, | |
871 | int advice) | |
872 | { | |
873 | return sys_fadvise64_64(fd, | |
874 | (offhi << 32) | offlo, | |
875 | (lenhi << 32) | lenlo, | |
876 | advice); | |
877 | } | |
878 | ||
879 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
880 | compat_off_t __user *offset, | |
881 | compat_size_t count) | |
882 | { | |
883 | mm_segment_t old_fs = get_fs(); | |
884 | int ret; | |
885 | off_t of; | |
886 | ||
887 | if (offset && get_user(of, offset)) | |
888 | return -EFAULT; | |
889 | ||
890 | set_fs(KERNEL_DS); | |
891 | ret = sys_sendfile(out_fd, in_fd, | |
892 | offset ? (off_t __user *) &of : NULL, | |
893 | count); | |
894 | set_fs(old_fs); | |
895 | ||
896 | if (offset && put_user(of, offset)) | |
897 | return -EFAULT; | |
898 | ||
899 | return ret; | |
900 | } | |
901 | ||
902 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
903 | compat_loff_t __user *offset, | |
904 | compat_size_t count) | |
905 | { | |
906 | mm_segment_t old_fs = get_fs(); | |
907 | int ret; | |
908 | loff_t lof; | |
909 | ||
910 | if (offset && get_user(lof, offset)) | |
911 | return -EFAULT; | |
912 | ||
913 | set_fs(KERNEL_DS); | |
914 | ret = sys_sendfile64(out_fd, in_fd, | |
915 | offset ? (loff_t __user *) &lof : NULL, | |
916 | count); | |
917 | set_fs(old_fs); | |
918 | ||
919 | if (offset && put_user(lof, offset)) | |
920 | return -EFAULT; | |
921 | ||
922 | return ret; | |
923 | } | |
924 | ||
925 | /* Handle adjtimex compatibility. */ | |
926 | ||
927 | struct timex32 { | |
928 | u32 modes; | |
929 | s32 offset, freq, maxerror, esterror; | |
930 | s32 status, constant, precision, tolerance; | |
931 | struct compat_timeval time; | |
932 | s32 tick; | |
933 | s32 ppsfreq, jitter, shift, stabil; | |
934 | s32 jitcnt, calcnt, errcnt, stbcnt; | |
935 | s32 :32; s32 :32; s32 :32; s32 :32; | |
936 | s32 :32; s32 :32; s32 :32; s32 :32; | |
937 | s32 :32; s32 :32; s32 :32; s32 :32; | |
938 | }; | |
939 | ||
940 | extern int do_adjtimex(struct timex *); | |
941 | ||
942 | asmlinkage long sys32_adjtimex(struct timex32 __user *utp) | |
943 | { | |
944 | struct timex txc; | |
945 | int ret; | |
946 | ||
947 | memset(&txc, 0, sizeof(struct timex)); | |
948 | ||
949 | if (get_user(txc.modes, &utp->modes) || | |
950 | __get_user(txc.offset, &utp->offset) || | |
951 | __get_user(txc.freq, &utp->freq) || | |
952 | __get_user(txc.maxerror, &utp->maxerror) || | |
953 | __get_user(txc.esterror, &utp->esterror) || | |
954 | __get_user(txc.status, &utp->status) || | |
955 | __get_user(txc.constant, &utp->constant) || | |
956 | __get_user(txc.precision, &utp->precision) || | |
957 | __get_user(txc.tolerance, &utp->tolerance) || | |
958 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
959 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
960 | __get_user(txc.tick, &utp->tick) || | |
961 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
962 | __get_user(txc.jitter, &utp->jitter) || | |
963 | __get_user(txc.shift, &utp->shift) || | |
964 | __get_user(txc.stabil, &utp->stabil) || | |
965 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
966 | __get_user(txc.calcnt, &utp->calcnt) || | |
967 | __get_user(txc.errcnt, &utp->errcnt) || | |
968 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
969 | return -EFAULT; | |
970 | ||
971 | ret = do_adjtimex(&txc); | |
972 | ||
973 | if (put_user(txc.modes, &utp->modes) || | |
974 | __put_user(txc.offset, &utp->offset) || | |
975 | __put_user(txc.freq, &utp->freq) || | |
976 | __put_user(txc.maxerror, &utp->maxerror) || | |
977 | __put_user(txc.esterror, &utp->esterror) || | |
978 | __put_user(txc.status, &utp->status) || | |
979 | __put_user(txc.constant, &utp->constant) || | |
980 | __put_user(txc.precision, &utp->precision) || | |
981 | __put_user(txc.tolerance, &utp->tolerance) || | |
982 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
983 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
984 | __put_user(txc.tick, &utp->tick) || | |
985 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
986 | __put_user(txc.jitter, &utp->jitter) || | |
987 | __put_user(txc.shift, &utp->shift) || | |
988 | __put_user(txc.stabil, &utp->stabil) || | |
989 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
990 | __put_user(txc.calcnt, &utp->calcnt) || | |
991 | __put_user(txc.errcnt, &utp->errcnt) || | |
992 | __put_user(txc.stbcnt, &utp->stbcnt)) | |
993 | ret = -EFAULT; | |
994 | ||
995 | return ret; | |
996 | } | |
997 | ||
998 | /* This is just a version for 32-bit applications which does | |
999 | * not force O_LARGEFILE on. | |
1000 | */ | |
1001 | ||
1002 | asmlinkage long sparc32_open(const char __user *filename, | |
1003 | int flags, int mode) | |
1004 | { | |
e922efc3 | 1005 | return do_sys_open(filename, flags, mode); |
1da177e4 LT |
1006 | } |
1007 | ||
1008 | extern unsigned long do_mremap(unsigned long addr, | |
1009 | unsigned long old_len, unsigned long new_len, | |
1010 | unsigned long flags, unsigned long new_addr); | |
1011 | ||
1012 | asmlinkage unsigned long sys32_mremap(unsigned long addr, | |
1013 | unsigned long old_len, unsigned long new_len, | |
1014 | unsigned long flags, u32 __new_addr) | |
1015 | { | |
1016 | struct vm_area_struct *vma; | |
1017 | unsigned long ret = -EINVAL; | |
1018 | unsigned long new_addr = __new_addr; | |
1019 | ||
1020 | if (old_len > 0xf0000000UL || new_len > 0xf0000000UL) | |
1021 | goto out; | |
1022 | if (addr > 0xf0000000UL - old_len) | |
1023 | goto out; | |
1024 | down_write(¤t->mm->mmap_sem); | |
1025 | if (flags & MREMAP_FIXED) { | |
1026 | if (new_addr > 0xf0000000UL - new_len) | |
1027 | goto out_sem; | |
1028 | } else if (addr > 0xf0000000UL - new_len) { | |
1029 | unsigned long map_flags = 0; | |
1030 | struct file *file = NULL; | |
1031 | ||
1032 | ret = -ENOMEM; | |
1033 | if (!(flags & MREMAP_MAYMOVE)) | |
1034 | goto out_sem; | |
1035 | ||
1036 | vma = find_vma(current->mm, addr); | |
1037 | if (vma) { | |
1038 | if (vma->vm_flags & VM_SHARED) | |
1039 | map_flags |= MAP_SHARED; | |
1040 | file = vma->vm_file; | |
1041 | } | |
1042 | ||
1043 | /* MREMAP_FIXED checked above. */ | |
1044 | new_addr = get_unmapped_area(file, addr, new_len, | |
1045 | vma ? vma->vm_pgoff : 0, | |
1046 | map_flags); | |
1047 | ret = new_addr; | |
1048 | if (new_addr & ~PAGE_MASK) | |
1049 | goto out_sem; | |
1050 | flags |= MREMAP_FIXED; | |
1051 | } | |
1052 | ret = do_mremap(addr, old_len, new_len, flags, new_addr); | |
1053 | out_sem: | |
1054 | up_write(¤t->mm->mmap_sem); | |
1055 | out: | |
1056 | return ret; | |
1057 | } | |
1058 | ||
1059 | struct __sysctl_args32 { | |
1060 | u32 name; | |
1061 | int nlen; | |
1062 | u32 oldval; | |
1063 | u32 oldlenp; | |
1064 | u32 newval; | |
1065 | u32 newlen; | |
1066 | u32 __unused[4]; | |
1067 | }; | |
1068 | ||
1069 | asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) | |
1070 | { | |
1071 | #ifndef CONFIG_SYSCTL | |
1072 | return -ENOSYS; | |
1073 | #else | |
1074 | struct __sysctl_args32 tmp; | |
1075 | int error; | |
1076 | size_t oldlen, __user *oldlenp = NULL; | |
1077 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; | |
1078 | ||
1079 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
1080 | return -EFAULT; | |
1081 | ||
1082 | if (tmp.oldval && tmp.oldlenp) { | |
1083 | /* Duh, this is ugly and might not work if sysctl_args | |
1084 | is in read-only memory, but do_sysctl does indirectly | |
1085 | a lot of uaccess in both directions and we'd have to | |
1086 | basically copy the whole sysctl.c here, and | |
1087 | glibc's __sysctl uses rw memory for the structure | |
1088 | anyway. */ | |
1089 | if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || | |
1090 | put_user(oldlen, (size_t __user *)addr)) | |
1091 | return -EFAULT; | |
1092 | oldlenp = (size_t __user *)addr; | |
1093 | } | |
1094 | ||
1095 | lock_kernel(); | |
1096 | error = do_sysctl((int __user *)(unsigned long) tmp.name, | |
1097 | tmp.nlen, | |
1098 | (void __user *)(unsigned long) tmp.oldval, | |
1099 | oldlenp, | |
1100 | (void __user *)(unsigned long) tmp.newval, | |
1101 | tmp.newlen); | |
1102 | unlock_kernel(); | |
1103 | if (oldlenp) { | |
1104 | if (!error) { | |
1105 | if (get_user(oldlen, (size_t __user *)addr) || | |
1106 | put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) | |
1107 | error = -EFAULT; | |
1108 | } | |
1109 | if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) | |
1110 | error = -EFAULT; | |
1111 | } | |
1112 | return error; | |
1113 | #endif | |
1114 | } | |
1115 | ||
1116 | long sys32_lookup_dcookie(unsigned long cookie_high, | |
1117 | unsigned long cookie_low, | |
1118 | char __user *buf, size_t len) | |
1119 | { | |
1120 | return sys_lookup_dcookie((cookie_high << 32) | cookie_low, | |
1121 | buf, len); | |
1122 | } | |
1123 | ||
1124 | extern asmlinkage long | |
1125 | sys_timer_create(clockid_t which_clock, | |
1126 | struct sigevent __user *timer_event_spec, | |
1127 | timer_t __user *created_timer_id); | |
1128 | ||
1129 | long | |
1130 | sys32_timer_create(u32 clock, struct compat_sigevent __user *se32, | |
1131 | timer_t __user *timer_id) | |
1132 | { | |
1133 | struct sigevent se; | |
1134 | mm_segment_t oldfs; | |
1135 | timer_t t; | |
1136 | long err; | |
1137 | ||
1138 | if (se32 == NULL) | |
1139 | return sys_timer_create(clock, NULL, timer_id); | |
1140 | ||
1141 | if (get_compat_sigevent(&se, se32)) | |
1142 | return -EFAULT; | |
1143 | ||
1144 | if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t))) | |
1145 | return -EFAULT; | |
1146 | ||
1147 | oldfs = get_fs(); | |
1148 | set_fs(KERNEL_DS); | |
1149 | err = sys_timer_create(clock, | |
1150 | (struct sigevent __user *) &se, | |
1151 | (timer_t __user *) &t); | |
1152 | set_fs(oldfs); | |
1153 | ||
1154 | if (!err) | |
1155 | err = __put_user (t, timer_id); | |
1156 | ||
1157 | return err; | |
1158 | } |