Commit | Line | Data |
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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> | |
a9415644 | 14 | #include <linux/capability.h> |
1da177e4 LT |
15 | #include <linux/fs.h> |
16 | #include <linux/mm.h> | |
17 | #include <linux/file.h> | |
18 | #include <linux/signal.h> | |
19 | #include <linux/resource.h> | |
20 | #include <linux/times.h> | |
21 | #include <linux/utsname.h> | |
22 | #include <linux/timex.h> | |
23 | #include <linux/smp.h> | |
24 | #include <linux/smp_lock.h> | |
25 | #include <linux/sem.h> | |
26 | #include <linux/msg.h> | |
27 | #include <linux/shm.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/uio.h> | |
30 | #include <linux/nfs_fs.h> | |
31 | #include <linux/quota.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/sunrpc/svc.h> | |
34 | #include <linux/nfsd/nfsd.h> | |
35 | #include <linux/nfsd/cache.h> | |
36 | #include <linux/nfsd/xdr.h> | |
37 | #include <linux/nfsd/syscall.h> | |
38 | #include <linux/poll.h> | |
39 | #include <linux/personality.h> | |
40 | #include <linux/stat.h> | |
41 | #include <linux/filter.h> | |
42 | #include <linux/highmem.h> | |
43 | #include <linux/highuid.h> | |
44 | #include <linux/mman.h> | |
45 | #include <linux/ipv6.h> | |
46 | #include <linux/in.h> | |
47 | #include <linux/icmpv6.h> | |
48 | #include <linux/syscalls.h> | |
49 | #include <linux/sysctl.h> | |
50 | #include <linux/binfmts.h> | |
51 | #include <linux/dnotify.h> | |
52 | #include <linux/security.h> | |
53 | #include <linux/compat.h> | |
54 | #include <linux/vfs.h> | |
55 | #include <linux/netfilter_ipv4/ip_tables.h> | |
56 | #include <linux/ptrace.h> | |
57 | #include <linux/highuid.h> | |
58 | ||
59 | #include <asm/types.h> | |
60 | #include <asm/ipc.h> | |
61 | #include <asm/uaccess.h> | |
62 | #include <asm/fpumacro.h> | |
63 | #include <asm/semaphore.h> | |
64 | #include <asm/mmu_context.h> | |
d61e16df | 65 | #include <asm/a.out.h> |
1da177e4 LT |
66 | |
67 | asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group) | |
68 | { | |
69 | return sys_chown(filename, low2highuid(user), low2highgid(group)); | |
70 | } | |
71 | ||
72 | asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group) | |
73 | { | |
74 | return sys_lchown(filename, low2highuid(user), low2highgid(group)); | |
75 | } | |
76 | ||
77 | asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group) | |
78 | { | |
79 | return sys_fchown(fd, low2highuid(user), low2highgid(group)); | |
80 | } | |
81 | ||
82 | asmlinkage long sys32_setregid16(u16 rgid, u16 egid) | |
83 | { | |
84 | return sys_setregid(low2highgid(rgid), low2highgid(egid)); | |
85 | } | |
86 | ||
87 | asmlinkage long sys32_setgid16(u16 gid) | |
88 | { | |
89 | return sys_setgid((gid_t)gid); | |
90 | } | |
91 | ||
92 | asmlinkage long sys32_setreuid16(u16 ruid, u16 euid) | |
93 | { | |
94 | return sys_setreuid(low2highuid(ruid), low2highuid(euid)); | |
95 | } | |
96 | ||
97 | asmlinkage long sys32_setuid16(u16 uid) | |
98 | { | |
99 | return sys_setuid((uid_t)uid); | |
100 | } | |
101 | ||
102 | asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid) | |
103 | { | |
104 | return sys_setresuid(low2highuid(ruid), low2highuid(euid), | |
105 | low2highuid(suid)); | |
106 | } | |
107 | ||
108 | asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid) | |
109 | { | |
110 | int retval; | |
111 | ||
112 | if (!(retval = put_user(high2lowuid(current->uid), ruid)) && | |
113 | !(retval = put_user(high2lowuid(current->euid), euid))) | |
114 | retval = put_user(high2lowuid(current->suid), suid); | |
115 | ||
116 | return retval; | |
117 | } | |
118 | ||
119 | asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid) | |
120 | { | |
121 | return sys_setresgid(low2highgid(rgid), low2highgid(egid), | |
122 | low2highgid(sgid)); | |
123 | } | |
124 | ||
125 | asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid) | |
126 | { | |
127 | int retval; | |
128 | ||
129 | if (!(retval = put_user(high2lowgid(current->gid), rgid)) && | |
130 | !(retval = put_user(high2lowgid(current->egid), egid))) | |
131 | retval = put_user(high2lowgid(current->sgid), sgid); | |
132 | ||
133 | return retval; | |
134 | } | |
135 | ||
136 | asmlinkage long sys32_setfsuid16(u16 uid) | |
137 | { | |
138 | return sys_setfsuid((uid_t)uid); | |
139 | } | |
140 | ||
141 | asmlinkage long sys32_setfsgid16(u16 gid) | |
142 | { | |
143 | return sys_setfsgid((gid_t)gid); | |
144 | } | |
145 | ||
146 | static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info) | |
147 | { | |
148 | int i; | |
149 | u16 group; | |
150 | ||
151 | for (i = 0; i < group_info->ngroups; i++) { | |
152 | group = (u16)GROUP_AT(group_info, i); | |
153 | if (put_user(group, grouplist+i)) | |
154 | return -EFAULT; | |
155 | } | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist) | |
161 | { | |
162 | int i; | |
163 | u16 group; | |
164 | ||
165 | for (i = 0; i < group_info->ngroups; i++) { | |
166 | if (get_user(group, grouplist+i)) | |
167 | return -EFAULT; | |
168 | GROUP_AT(group_info, i) = (gid_t)group; | |
169 | } | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
174 | asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist) | |
175 | { | |
176 | int i; | |
177 | ||
178 | if (gidsetsize < 0) | |
179 | return -EINVAL; | |
180 | ||
181 | get_group_info(current->group_info); | |
182 | i = current->group_info->ngroups; | |
183 | if (gidsetsize) { | |
184 | if (i > gidsetsize) { | |
185 | i = -EINVAL; | |
186 | goto out; | |
187 | } | |
188 | if (groups16_to_user(grouplist, current->group_info)) { | |
189 | i = -EFAULT; | |
190 | goto out; | |
191 | } | |
192 | } | |
193 | out: | |
194 | put_group_info(current->group_info); | |
195 | return i; | |
196 | } | |
197 | ||
198 | asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist) | |
199 | { | |
200 | struct group_info *group_info; | |
201 | int retval; | |
202 | ||
203 | if (!capable(CAP_SETGID)) | |
204 | return -EPERM; | |
205 | if ((unsigned)gidsetsize > NGROUPS_MAX) | |
206 | return -EINVAL; | |
207 | ||
208 | group_info = groups_alloc(gidsetsize); | |
209 | if (!group_info) | |
210 | return -ENOMEM; | |
211 | retval = groups16_from_user(group_info, grouplist); | |
212 | if (retval) { | |
213 | put_group_info(group_info); | |
214 | return retval; | |
215 | } | |
216 | ||
217 | retval = set_current_groups(group_info); | |
218 | put_group_info(group_info); | |
219 | ||
220 | return retval; | |
221 | } | |
222 | ||
223 | asmlinkage long sys32_getuid16(void) | |
224 | { | |
225 | return high2lowuid(current->uid); | |
226 | } | |
227 | ||
228 | asmlinkage long sys32_geteuid16(void) | |
229 | { | |
230 | return high2lowuid(current->euid); | |
231 | } | |
232 | ||
233 | asmlinkage long sys32_getgid16(void) | |
234 | { | |
235 | return high2lowgid(current->gid); | |
236 | } | |
237 | ||
238 | asmlinkage long sys32_getegid16(void) | |
239 | { | |
240 | return high2lowgid(current->egid); | |
241 | } | |
242 | ||
243 | /* 32-bit timeval and related flotsam. */ | |
244 | ||
245 | static long get_tv32(struct timeval *o, struct compat_timeval __user *i) | |
246 | { | |
247 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
248 | (__get_user(o->tv_sec, &i->tv_sec) | | |
249 | __get_user(o->tv_usec, &i->tv_usec))); | |
250 | } | |
251 | ||
252 | static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) | |
253 | { | |
254 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
255 | (__put_user(i->tv_sec, &o->tv_sec) | | |
256 | __put_user(i->tv_usec, &o->tv_usec))); | |
257 | } | |
258 | ||
259 | #ifdef CONFIG_SYSVIPC | |
260 | asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth) | |
261 | { | |
262 | int version; | |
263 | ||
264 | version = call >> 16; /* hack for backward compatibility */ | |
265 | call &= 0xffff; | |
266 | ||
267 | switch (call) { | |
268 | case SEMTIMEDOP: | |
269 | if (fifth) | |
270 | /* sign extend semid */ | |
271 | return compat_sys_semtimedop((int)first, | |
272 | compat_ptr(ptr), second, | |
273 | compat_ptr(fifth)); | |
274 | /* else fall through for normal semop() */ | |
275 | case SEMOP: | |
276 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
277 | /* sign extend semid */ | |
278 | return sys_semtimedop((int)first, compat_ptr(ptr), second, | |
279 | NULL); | |
280 | case SEMGET: | |
281 | /* sign extend key, nsems */ | |
282 | return sys_semget((int)first, (int)second, third); | |
283 | case SEMCTL: | |
284 | /* sign extend semid, semnum */ | |
285 | return compat_sys_semctl((int)first, (int)second, third, | |
286 | compat_ptr(ptr)); | |
287 | ||
288 | case MSGSND: | |
289 | /* sign extend msqid */ | |
290 | return compat_sys_msgsnd((int)first, (int)second, third, | |
291 | compat_ptr(ptr)); | |
292 | case MSGRCV: | |
293 | /* sign extend msqid, msgtyp */ | |
294 | return compat_sys_msgrcv((int)first, second, (int)fifth, | |
295 | third, version, compat_ptr(ptr)); | |
296 | case MSGGET: | |
297 | /* sign extend key */ | |
298 | return sys_msgget((int)first, second); | |
299 | case MSGCTL: | |
300 | /* sign extend msqid */ | |
301 | return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); | |
302 | ||
303 | case SHMAT: | |
304 | /* sign extend shmid */ | |
305 | return compat_sys_shmat((int)first, second, third, version, | |
306 | compat_ptr(ptr)); | |
307 | case SHMDT: | |
308 | return sys_shmdt(compat_ptr(ptr)); | |
309 | case SHMGET: | |
310 | /* sign extend key_t */ | |
311 | return sys_shmget((int)first, second, third); | |
312 | case SHMCTL: | |
313 | /* sign extend shmid */ | |
314 | return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); | |
315 | ||
316 | default: | |
317 | return -ENOSYS; | |
318 | }; | |
319 | ||
320 | return -ENOSYS; | |
321 | } | |
322 | #endif | |
323 | ||
324 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) | |
325 | { | |
326 | if ((int)high < 0) | |
327 | return -EINVAL; | |
328 | else | |
329 | return sys_truncate(path, (high << 32) | low); | |
330 | } | |
331 | ||
332 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) | |
333 | { | |
334 | if ((int)high < 0) | |
335 | return -EINVAL; | |
336 | else | |
337 | return sys_ftruncate(fd, (high << 32) | low); | |
338 | } | |
339 | ||
340 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) | |
341 | { | |
342 | int err; | |
343 | ||
344 | if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) || | |
345 | !old_valid_dev(stat->rdev)) | |
346 | return -EOVERFLOW; | |
347 | ||
348 | err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev); | |
349 | err |= put_user(stat->ino, &statbuf->st_ino); | |
350 | err |= put_user(stat->mode, &statbuf->st_mode); | |
351 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
352 | err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid); | |
353 | err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid); | |
354 | err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev); | |
355 | err |= put_user(stat->size, &statbuf->st_size); | |
356 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
0ba4da03 | 357 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); |
1da177e4 | 358 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); |
0ba4da03 | 359 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); |
1da177e4 | 360 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); |
0ba4da03 | 361 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); |
1da177e4 LT |
362 | err |= put_user(stat->blksize, &statbuf->st_blksize); |
363 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
364 | err |= put_user(0, &statbuf->__unused4[0]); | |
365 | err |= put_user(0, &statbuf->__unused4[1]); | |
366 | ||
367 | return err; | |
368 | } | |
369 | ||
0ba4da03 DM |
370 | int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf) |
371 | { | |
372 | int err; | |
373 | ||
374 | err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); | |
375 | err |= put_user(stat->ino, &statbuf->st_ino); | |
376 | err |= put_user(stat->mode, &statbuf->st_mode); | |
377 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
378 | err |= put_user(stat->uid, &statbuf->st_uid); | |
379 | err |= put_user(stat->gid, &statbuf->st_gid); | |
380 | err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); | |
381 | err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); | |
382 | err |= put_user(stat->size, &statbuf->st_size); | |
383 | err |= put_user(stat->blksize, &statbuf->st_blksize); | |
384 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); | |
385 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); | |
386 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
387 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
388 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); | |
389 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); | |
390 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); | |
391 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); | |
392 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); | |
393 | err |= put_user(0, &statbuf->__unused4); | |
394 | err |= put_user(0, &statbuf->__unused5); | |
395 | ||
396 | return err; | |
397 | } | |
398 | ||
399 | asmlinkage long compat_sys_stat64(char __user * filename, | |
400 | struct compat_stat64 __user *statbuf) | |
401 | { | |
402 | struct kstat stat; | |
403 | int error = vfs_stat(filename, &stat); | |
404 | ||
405 | if (!error) | |
406 | error = cp_compat_stat64(&stat, statbuf); | |
407 | return error; | |
408 | } | |
409 | ||
410 | asmlinkage long compat_sys_lstat64(char __user * filename, | |
411 | struct compat_stat64 __user *statbuf) | |
412 | { | |
413 | struct kstat stat; | |
414 | int error = vfs_lstat(filename, &stat); | |
415 | ||
416 | if (!error) | |
417 | error = cp_compat_stat64(&stat, statbuf); | |
418 | return error; | |
419 | } | |
420 | ||
421 | asmlinkage long compat_sys_fstat64(unsigned int fd, | |
422 | struct compat_stat64 __user * statbuf) | |
423 | { | |
424 | struct kstat stat; | |
425 | int error = vfs_fstat(fd, &stat); | |
426 | ||
427 | if (!error) | |
428 | error = cp_compat_stat64(&stat, statbuf); | |
429 | return error; | |
430 | } | |
431 | ||
40ad7a6a DM |
432 | asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename, |
433 | struct compat_stat64 __user * statbuf, int flag) | |
434 | { | |
435 | struct kstat stat; | |
436 | int error = -EINVAL; | |
437 | ||
438 | if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) | |
439 | goto out; | |
440 | ||
441 | if (flag & AT_SYMLINK_NOFOLLOW) | |
442 | error = vfs_lstat_fd(dfd, filename, &stat); | |
443 | else | |
444 | error = vfs_stat_fd(dfd, filename, &stat); | |
445 | ||
446 | if (!error) | |
447 | error = cp_compat_stat64(&stat, statbuf); | |
448 | ||
449 | out: | |
450 | return error; | |
451 | } | |
452 | ||
1da177e4 LT |
453 | asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) |
454 | { | |
455 | return sys_sysfs(option, arg1, arg2); | |
456 | } | |
457 | ||
458 | struct sysinfo32 { | |
459 | s32 uptime; | |
460 | u32 loads[3]; | |
461 | u32 totalram; | |
462 | u32 freeram; | |
463 | u32 sharedram; | |
464 | u32 bufferram; | |
465 | u32 totalswap; | |
466 | u32 freeswap; | |
467 | unsigned short procs; | |
468 | unsigned short pad; | |
469 | u32 totalhigh; | |
470 | u32 freehigh; | |
471 | u32 mem_unit; | |
472 | char _f[20-2*sizeof(int)-sizeof(int)]; | |
473 | }; | |
474 | ||
475 | asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) | |
476 | { | |
477 | struct sysinfo s; | |
478 | int ret, err; | |
479 | int bitcount = 0; | |
480 | mm_segment_t old_fs = get_fs (); | |
481 | ||
482 | set_fs(KERNEL_DS); | |
483 | ret = sys_sysinfo((struct sysinfo __user *) &s); | |
484 | set_fs(old_fs); | |
485 | /* Check to see if any memory value is too large for 32-bit and | |
486 | * scale down if needed. | |
487 | */ | |
488 | if ((s.totalram >> 32) || (s.totalswap >> 32)) { | |
489 | while (s.mem_unit < PAGE_SIZE) { | |
490 | s.mem_unit <<= 1; | |
491 | bitcount++; | |
492 | } | |
493 | s.totalram >>= bitcount; | |
494 | s.freeram >>= bitcount; | |
495 | s.sharedram >>= bitcount; | |
496 | s.bufferram >>= bitcount; | |
497 | s.totalswap >>= bitcount; | |
498 | s.freeswap >>= bitcount; | |
499 | s.totalhigh >>= bitcount; | |
500 | s.freehigh >>= bitcount; | |
501 | } | |
502 | ||
503 | err = put_user (s.uptime, &info->uptime); | |
504 | err |= __put_user (s.loads[0], &info->loads[0]); | |
505 | err |= __put_user (s.loads[1], &info->loads[1]); | |
506 | err |= __put_user (s.loads[2], &info->loads[2]); | |
507 | err |= __put_user (s.totalram, &info->totalram); | |
508 | err |= __put_user (s.freeram, &info->freeram); | |
509 | err |= __put_user (s.sharedram, &info->sharedram); | |
510 | err |= __put_user (s.bufferram, &info->bufferram); | |
511 | err |= __put_user (s.totalswap, &info->totalswap); | |
512 | err |= __put_user (s.freeswap, &info->freeswap); | |
513 | err |= __put_user (s.procs, &info->procs); | |
514 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
515 | err |= __put_user (s.freehigh, &info->freehigh); | |
516 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
517 | if (err) | |
518 | return -EFAULT; | |
519 | return ret; | |
520 | } | |
521 | ||
522 | asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) | |
523 | { | |
524 | struct timespec t; | |
525 | int ret; | |
526 | mm_segment_t old_fs = get_fs (); | |
527 | ||
528 | set_fs (KERNEL_DS); | |
529 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t); | |
530 | set_fs (old_fs); | |
531 | if (put_compat_timespec(&t, interval)) | |
532 | return -EFAULT; | |
533 | return ret; | |
534 | } | |
535 | ||
536 | asmlinkage long compat_sys_rt_sigprocmask(int how, | |
537 | compat_sigset_t __user *set, | |
538 | compat_sigset_t __user *oset, | |
539 | compat_size_t sigsetsize) | |
540 | { | |
541 | sigset_t s; | |
542 | compat_sigset_t s32; | |
543 | int ret; | |
544 | mm_segment_t old_fs = get_fs(); | |
545 | ||
546 | if (set) { | |
547 | if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) | |
548 | return -EFAULT; | |
549 | switch (_NSIG_WORDS) { | |
550 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); | |
551 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); | |
552 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); | |
553 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); | |
554 | } | |
555 | } | |
556 | set_fs (KERNEL_DS); | |
557 | ret = sys_rt_sigprocmask(how, | |
558 | set ? (sigset_t __user *) &s : NULL, | |
559 | oset ? (sigset_t __user *) &s : NULL, | |
560 | sigsetsize); | |
561 | set_fs (old_fs); | |
562 | if (ret) return ret; | |
563 | if (oset) { | |
564 | switch (_NSIG_WORDS) { | |
565 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
566 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
567 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
568 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
569 | } | |
570 | if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) | |
571 | return -EFAULT; | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
576 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, | |
577 | compat_size_t sigsetsize) | |
578 | { | |
579 | sigset_t s; | |
580 | compat_sigset_t s32; | |
581 | int ret; | |
582 | mm_segment_t old_fs = get_fs(); | |
583 | ||
584 | set_fs (KERNEL_DS); | |
585 | ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); | |
586 | set_fs (old_fs); | |
587 | if (!ret) { | |
588 | switch (_NSIG_WORDS) { | |
589 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
590 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
591 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
592 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
593 | } | |
594 | if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) | |
595 | return -EFAULT; | |
596 | } | |
597 | return ret; | |
598 | } | |
599 | ||
600 | asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, | |
601 | struct compat_siginfo __user *uinfo) | |
602 | { | |
603 | siginfo_t info; | |
604 | int ret; | |
605 | mm_segment_t old_fs = get_fs(); | |
606 | ||
607 | if (copy_siginfo_from_user32(&info, uinfo)) | |
608 | return -EFAULT; | |
609 | ||
610 | set_fs (KERNEL_DS); | |
611 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); | |
612 | set_fs (old_fs); | |
613 | return ret; | |
614 | } | |
615 | ||
616 | asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, | |
617 | struct old_sigaction32 __user *oact) | |
618 | { | |
619 | struct k_sigaction new_ka, old_ka; | |
620 | int ret; | |
621 | ||
622 | if (sig < 0) { | |
623 | set_thread_flag(TIF_NEWSIGNALS); | |
624 | sig = -sig; | |
625 | } | |
626 | ||
627 | if (act) { | |
628 | compat_old_sigset_t mask; | |
629 | u32 u_handler, u_restorer; | |
630 | ||
631 | ret = get_user(u_handler, &act->sa_handler); | |
632 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
633 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
634 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
635 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
636 | ret |= __get_user(mask, &act->sa_mask); | |
637 | if (ret) | |
638 | return ret; | |
639 | new_ka.ka_restorer = NULL; | |
640 | siginitset(&new_ka.sa.sa_mask, mask); | |
641 | } | |
642 | ||
643 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
644 | ||
645 | if (!ret && oact) { | |
646 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
647 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
648 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
649 | ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); | |
650 | } | |
651 | ||
652 | return ret; | |
653 | } | |
654 | ||
655 | asmlinkage long compat_sys_rt_sigaction(int sig, | |
656 | struct sigaction32 __user *act, | |
657 | struct sigaction32 __user *oact, | |
658 | void __user *restorer, | |
659 | compat_size_t sigsetsize) | |
660 | { | |
661 | struct k_sigaction new_ka, old_ka; | |
662 | int ret; | |
663 | compat_sigset_t set32; | |
664 | ||
665 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
666 | if (sigsetsize != sizeof(compat_sigset_t)) | |
667 | return -EINVAL; | |
668 | ||
669 | /* All tasks which use RT signals (effectively) use | |
670 | * new style signals. | |
671 | */ | |
672 | set_thread_flag(TIF_NEWSIGNALS); | |
673 | ||
674 | if (act) { | |
675 | u32 u_handler, u_restorer; | |
676 | ||
677 | new_ka.ka_restorer = restorer; | |
678 | ret = get_user(u_handler, &act->sa_handler); | |
679 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
680 | ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); | |
681 | switch (_NSIG_WORDS) { | |
682 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); | |
683 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); | |
684 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); | |
685 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); | |
686 | } | |
687 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
688 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
689 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
690 | if (ret) | |
691 | return -EFAULT; | |
692 | } | |
693 | ||
694 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
695 | ||
696 | if (!ret && oact) { | |
697 | switch (_NSIG_WORDS) { | |
698 | case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; | |
699 | case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; | |
700 | case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; | |
701 | case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; | |
702 | } | |
703 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
704 | ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); | |
705 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
706 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
707 | if (ret) | |
708 | ret = -EFAULT; | |
709 | } | |
710 | ||
711 | return ret; | |
712 | } | |
713 | ||
714 | /* | |
715 | * sparc32_execve() executes a new program after the asm stub has set | |
716 | * things up for us. This should basically do what I want it to. | |
717 | */ | |
718 | asmlinkage long sparc32_execve(struct pt_regs *regs) | |
719 | { | |
720 | int error, base = 0; | |
721 | char *filename; | |
722 | ||
723 | /* User register window flush is done by entry.S */ | |
724 | ||
725 | /* Check for indirect call. */ | |
726 | if ((u32)regs->u_regs[UREG_G1] == 0) | |
727 | base = 1; | |
728 | ||
729 | filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); | |
730 | error = PTR_ERR(filename); | |
731 | if (IS_ERR(filename)) | |
732 | goto out; | |
733 | ||
734 | error = compat_do_execve(filename, | |
735 | compat_ptr(regs->u_regs[base + UREG_I1]), | |
736 | compat_ptr(regs->u_regs[base + UREG_I2]), regs); | |
737 | ||
738 | putname(filename); | |
739 | ||
740 | if (!error) { | |
741 | fprs_write(0); | |
742 | current_thread_info()->xfsr[0] = 0; | |
743 | current_thread_info()->fpsaved[0] = 0; | |
744 | regs->tstate &= ~TSTATE_PEF; | |
745 | task_lock(current); | |
746 | current->ptrace &= ~PT_DTRACE; | |
747 | task_unlock(current); | |
748 | } | |
749 | out: | |
750 | return error; | |
751 | } | |
752 | ||
753 | #ifdef CONFIG_MODULES | |
754 | ||
755 | asmlinkage long sys32_init_module(void __user *umod, u32 len, | |
756 | const char __user *uargs) | |
757 | { | |
758 | return sys_init_module(umod, len, uargs); | |
759 | } | |
760 | ||
761 | asmlinkage long sys32_delete_module(const char __user *name_user, | |
762 | unsigned int flags) | |
763 | { | |
764 | return sys_delete_module(name_user, flags); | |
765 | } | |
766 | ||
767 | #else /* CONFIG_MODULES */ | |
768 | ||
769 | asmlinkage long sys32_init_module(const char __user *name_user, | |
770 | struct module __user *mod_user) | |
771 | { | |
772 | return -ENOSYS; | |
773 | } | |
774 | ||
775 | asmlinkage long sys32_delete_module(const char __user *name_user) | |
776 | { | |
777 | return -ENOSYS; | |
778 | } | |
779 | ||
780 | #endif /* CONFIG_MODULES */ | |
781 | ||
782 | /* Translations due to time_t size differences. Which affects all | |
783 | sorts of things, like timeval and itimerval. */ | |
784 | ||
785 | extern struct timezone sys_tz; | |
786 | ||
787 | asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, | |
788 | struct timezone __user *tz) | |
789 | { | |
790 | if (tv) { | |
791 | struct timeval ktv; | |
792 | do_gettimeofday(&ktv); | |
793 | if (put_tv32(tv, &ktv)) | |
794 | return -EFAULT; | |
795 | } | |
796 | if (tz) { | |
797 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
798 | return -EFAULT; | |
799 | } | |
800 | return 0; | |
801 | } | |
802 | ||
803 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) | |
804 | { | |
805 | long usec; | |
806 | ||
807 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
808 | return -EFAULT; | |
809 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
810 | return -EFAULT; | |
811 | if (__get_user(usec, &i->tv_usec)) | |
812 | return -EFAULT; | |
813 | o->tv_nsec = usec * 1000; | |
814 | return 0; | |
815 | } | |
816 | ||
817 | asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, | |
818 | struct timezone __user *tz) | |
819 | { | |
820 | struct timespec kts; | |
821 | struct timezone ktz; | |
822 | ||
823 | if (tv) { | |
824 | if (get_ts32(&kts, tv)) | |
825 | return -EFAULT; | |
826 | } | |
827 | if (tz) { | |
828 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
829 | return -EFAULT; | |
830 | } | |
831 | ||
832 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
833 | } | |
834 | ||
835 | asmlinkage long sys32_utimes(char __user *filename, | |
836 | struct compat_timeval __user *tvs) | |
837 | { | |
838 | struct timeval ktvs[2]; | |
839 | ||
840 | if (tvs) { | |
841 | if (get_tv32(&ktvs[0], tvs) || | |
842 | get_tv32(&ktvs[1], 1+tvs)) | |
843 | return -EFAULT; | |
844 | } | |
845 | ||
5590ff0d | 846 | return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL)); |
1da177e4 LT |
847 | } |
848 | ||
849 | /* These are here just in case some old sparc32 binary calls it. */ | |
850 | asmlinkage long sys32_pause(void) | |
851 | { | |
852 | current->state = TASK_INTERRUPTIBLE; | |
853 | schedule(); | |
854 | return -ERESTARTNOHAND; | |
855 | } | |
856 | ||
857 | asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, | |
858 | char __user *ubuf, | |
859 | compat_size_t count, | |
860 | unsigned long poshi, | |
861 | unsigned long poslo) | |
862 | { | |
863 | return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); | |
864 | } | |
865 | ||
866 | asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, | |
867 | char __user *ubuf, | |
868 | compat_size_t count, | |
869 | unsigned long poshi, | |
870 | unsigned long poslo) | |
871 | { | |
872 | return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); | |
873 | } | |
874 | ||
875 | asmlinkage long compat_sys_readahead(int fd, | |
876 | unsigned long offhi, | |
877 | unsigned long offlo, | |
878 | compat_size_t count) | |
879 | { | |
880 | return sys_readahead(fd, (offhi << 32) | offlo, count); | |
881 | } | |
882 | ||
883 | long compat_sys_fadvise64(int fd, | |
884 | unsigned long offhi, | |
885 | unsigned long offlo, | |
886 | compat_size_t len, int advice) | |
887 | { | |
888 | return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); | |
889 | } | |
890 | ||
891 | long compat_sys_fadvise64_64(int fd, | |
892 | unsigned long offhi, unsigned long offlo, | |
893 | unsigned long lenhi, unsigned long lenlo, | |
894 | int advice) | |
895 | { | |
896 | return sys_fadvise64_64(fd, | |
897 | (offhi << 32) | offlo, | |
898 | (lenhi << 32) | lenlo, | |
899 | advice); | |
900 | } | |
901 | ||
902 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
903 | compat_off_t __user *offset, | |
904 | compat_size_t count) | |
905 | { | |
906 | mm_segment_t old_fs = get_fs(); | |
907 | int ret; | |
908 | off_t of; | |
909 | ||
910 | if (offset && get_user(of, offset)) | |
911 | return -EFAULT; | |
912 | ||
913 | set_fs(KERNEL_DS); | |
914 | ret = sys_sendfile(out_fd, in_fd, | |
915 | offset ? (off_t __user *) &of : NULL, | |
916 | count); | |
917 | set_fs(old_fs); | |
918 | ||
919 | if (offset && put_user(of, offset)) | |
920 | return -EFAULT; | |
921 | ||
922 | return ret; | |
923 | } | |
924 | ||
925 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
926 | compat_loff_t __user *offset, | |
927 | compat_size_t count) | |
928 | { | |
929 | mm_segment_t old_fs = get_fs(); | |
930 | int ret; | |
931 | loff_t lof; | |
932 | ||
933 | if (offset && get_user(lof, offset)) | |
934 | return -EFAULT; | |
935 | ||
936 | set_fs(KERNEL_DS); | |
937 | ret = sys_sendfile64(out_fd, in_fd, | |
938 | offset ? (loff_t __user *) &lof : NULL, | |
939 | count); | |
940 | set_fs(old_fs); | |
941 | ||
942 | if (offset && put_user(lof, offset)) | |
943 | return -EFAULT; | |
944 | ||
945 | return ret; | |
946 | } | |
947 | ||
948 | /* Handle adjtimex compatibility. */ | |
949 | ||
1da177e4 LT |
950 | extern int do_adjtimex(struct timex *); |
951 | ||
88959ea9 | 952 | asmlinkage long sys32_adjtimex(struct compat_timex __user *utp) |
1da177e4 LT |
953 | { |
954 | struct timex txc; | |
955 | int ret; | |
956 | ||
957 | memset(&txc, 0, sizeof(struct timex)); | |
958 | ||
959 | if (get_user(txc.modes, &utp->modes) || | |
960 | __get_user(txc.offset, &utp->offset) || | |
961 | __get_user(txc.freq, &utp->freq) || | |
962 | __get_user(txc.maxerror, &utp->maxerror) || | |
963 | __get_user(txc.esterror, &utp->esterror) || | |
964 | __get_user(txc.status, &utp->status) || | |
965 | __get_user(txc.constant, &utp->constant) || | |
966 | __get_user(txc.precision, &utp->precision) || | |
967 | __get_user(txc.tolerance, &utp->tolerance) || | |
968 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
969 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
970 | __get_user(txc.tick, &utp->tick) || | |
971 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
972 | __get_user(txc.jitter, &utp->jitter) || | |
973 | __get_user(txc.shift, &utp->shift) || | |
974 | __get_user(txc.stabil, &utp->stabil) || | |
975 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
976 | __get_user(txc.calcnt, &utp->calcnt) || | |
977 | __get_user(txc.errcnt, &utp->errcnt) || | |
978 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
979 | return -EFAULT; | |
980 | ||
981 | ret = do_adjtimex(&txc); | |
982 | ||
983 | if (put_user(txc.modes, &utp->modes) || | |
984 | __put_user(txc.offset, &utp->offset) || | |
985 | __put_user(txc.freq, &utp->freq) || | |
986 | __put_user(txc.maxerror, &utp->maxerror) || | |
987 | __put_user(txc.esterror, &utp->esterror) || | |
988 | __put_user(txc.status, &utp->status) || | |
989 | __put_user(txc.constant, &utp->constant) || | |
990 | __put_user(txc.precision, &utp->precision) || | |
991 | __put_user(txc.tolerance, &utp->tolerance) || | |
992 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
993 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
994 | __put_user(txc.tick, &utp->tick) || | |
995 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
996 | __put_user(txc.jitter, &utp->jitter) || | |
997 | __put_user(txc.shift, &utp->shift) || | |
998 | __put_user(txc.stabil, &utp->stabil) || | |
999 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
1000 | __put_user(txc.calcnt, &utp->calcnt) || | |
1001 | __put_user(txc.errcnt, &utp->errcnt) || | |
1002 | __put_user(txc.stbcnt, &utp->stbcnt)) | |
1003 | ret = -EFAULT; | |
1004 | ||
1005 | return ret; | |
1006 | } | |
1007 | ||
1008 | /* This is just a version for 32-bit applications which does | |
1009 | * not force O_LARGEFILE on. | |
1010 | */ | |
1011 | ||
1012 | asmlinkage long sparc32_open(const char __user *filename, | |
1013 | int flags, int mode) | |
1014 | { | |
5590ff0d | 1015 | return do_sys_open(AT_FDCWD, filename, flags, mode); |
1da177e4 LT |
1016 | } |
1017 | ||
1018 | extern unsigned long do_mremap(unsigned long addr, | |
1019 | unsigned long old_len, unsigned long new_len, | |
1020 | unsigned long flags, unsigned long new_addr); | |
1021 | ||
1022 | asmlinkage unsigned long sys32_mremap(unsigned long addr, | |
1023 | unsigned long old_len, unsigned long new_len, | |
1024 | unsigned long flags, u32 __new_addr) | |
1025 | { | |
1026 | struct vm_area_struct *vma; | |
1027 | unsigned long ret = -EINVAL; | |
1028 | unsigned long new_addr = __new_addr; | |
1029 | ||
d61e16df | 1030 | if (old_len > STACK_TOP32 || new_len > STACK_TOP32) |
1da177e4 | 1031 | goto out; |
d61e16df | 1032 | if (addr > STACK_TOP32 - old_len) |
1da177e4 LT |
1033 | goto out; |
1034 | down_write(¤t->mm->mmap_sem); | |
1035 | if (flags & MREMAP_FIXED) { | |
d61e16df | 1036 | if (new_addr > STACK_TOP32 - new_len) |
1da177e4 | 1037 | goto out_sem; |
d61e16df | 1038 | } else if (addr > STACK_TOP32 - new_len) { |
1da177e4 LT |
1039 | unsigned long map_flags = 0; |
1040 | struct file *file = NULL; | |
1041 | ||
1042 | ret = -ENOMEM; | |
1043 | if (!(flags & MREMAP_MAYMOVE)) | |
1044 | goto out_sem; | |
1045 | ||
1046 | vma = find_vma(current->mm, addr); | |
1047 | if (vma) { | |
1048 | if (vma->vm_flags & VM_SHARED) | |
1049 | map_flags |= MAP_SHARED; | |
1050 | file = vma->vm_file; | |
1051 | } | |
1052 | ||
1053 | /* MREMAP_FIXED checked above. */ | |
1054 | new_addr = get_unmapped_area(file, addr, new_len, | |
1055 | vma ? vma->vm_pgoff : 0, | |
1056 | map_flags); | |
1057 | ret = new_addr; | |
1058 | if (new_addr & ~PAGE_MASK) | |
1059 | goto out_sem; | |
1060 | flags |= MREMAP_FIXED; | |
1061 | } | |
1062 | ret = do_mremap(addr, old_len, new_len, flags, new_addr); | |
1063 | out_sem: | |
1064 | up_write(¤t->mm->mmap_sem); | |
1065 | out: | |
1066 | return ret; | |
1067 | } | |
1068 | ||
1069 | struct __sysctl_args32 { | |
1070 | u32 name; | |
1071 | int nlen; | |
1072 | u32 oldval; | |
1073 | u32 oldlenp; | |
1074 | u32 newval; | |
1075 | u32 newlen; | |
1076 | u32 __unused[4]; | |
1077 | }; | |
1078 | ||
1079 | asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) | |
1080 | { | |
1081 | #ifndef CONFIG_SYSCTL | |
1082 | return -ENOSYS; | |
1083 | #else | |
1084 | struct __sysctl_args32 tmp; | |
1085 | int error; | |
1086 | size_t oldlen, __user *oldlenp = NULL; | |
1087 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; | |
1088 | ||
1089 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
1090 | return -EFAULT; | |
1091 | ||
1092 | if (tmp.oldval && tmp.oldlenp) { | |
1093 | /* Duh, this is ugly and might not work if sysctl_args | |
1094 | is in read-only memory, but do_sysctl does indirectly | |
1095 | a lot of uaccess in both directions and we'd have to | |
1096 | basically copy the whole sysctl.c here, and | |
1097 | glibc's __sysctl uses rw memory for the structure | |
1098 | anyway. */ | |
1099 | if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || | |
1100 | put_user(oldlen, (size_t __user *)addr)) | |
1101 | return -EFAULT; | |
1102 | oldlenp = (size_t __user *)addr; | |
1103 | } | |
1104 | ||
1105 | lock_kernel(); | |
1106 | error = do_sysctl((int __user *)(unsigned long) tmp.name, | |
1107 | tmp.nlen, | |
1108 | (void __user *)(unsigned long) tmp.oldval, | |
1109 | oldlenp, | |
1110 | (void __user *)(unsigned long) tmp.newval, | |
1111 | tmp.newlen); | |
1112 | unlock_kernel(); | |
1113 | if (oldlenp) { | |
1114 | if (!error) { | |
1115 | if (get_user(oldlen, (size_t __user *)addr) || | |
1116 | put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) | |
1117 | error = -EFAULT; | |
1118 | } | |
1119 | if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) | |
1120 | error = -EFAULT; | |
1121 | } | |
1122 | return error; | |
1123 | #endif | |
1124 | } | |
1125 | ||
1126 | long sys32_lookup_dcookie(unsigned long cookie_high, | |
1127 | unsigned long cookie_low, | |
1128 | char __user *buf, size_t len) | |
1129 | { | |
1130 | return sys_lookup_dcookie((cookie_high << 32) | cookie_low, | |
1131 | buf, len); | |
1132 | } |