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V4L/DVB (6926): tda18271: consolidate table lookup functions
[linux-2.6/verdex.git] / arch / sparc64 / kernel / sys_sparc32.c
blob98c468803ce35d345e72439280485fe546906ad2
1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
2 *
3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
5 *
6 * These routines maintain argument size conversion between 32bit and 64bit
7 * environment.
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/capability.h>
13 #include <linux/fs.h>
14 #include <linux/mm.h>
15 #include <linux/file.h>
16 #include <linux/signal.h>
17 #include <linux/resource.h>
18 #include <linux/times.h>
19 #include <linux/utsname.h>
20 #include <linux/smp.h>
21 #include <linux/smp_lock.h>
22 #include <linux/sem.h>
23 #include <linux/msg.h>
24 #include <linux/shm.h>
25 #include <linux/slab.h>
26 #include <linux/uio.h>
27 #include <linux/nfs_fs.h>
28 #include <linux/quota.h>
29 #include <linux/module.h>
30 #include <linux/sunrpc/svc.h>
31 #include <linux/nfsd/nfsd.h>
32 #include <linux/nfsd/cache.h>
33 #include <linux/nfsd/xdr.h>
34 #include <linux/nfsd/syscall.h>
35 #include <linux/poll.h>
36 #include <linux/personality.h>
37 #include <linux/stat.h>
38 #include <linux/filter.h>
39 #include <linux/highmem.h>
40 #include <linux/highuid.h>
41 #include <linux/mman.h>
42 #include <linux/ipv6.h>
43 #include <linux/in.h>
44 #include <linux/icmpv6.h>
45 #include <linux/syscalls.h>
46 #include <linux/sysctl.h>
47 #include <linux/binfmts.h>
48 #include <linux/dnotify.h>
49 #include <linux/security.h>
50 #include <linux/compat.h>
51 #include <linux/vfs.h>
52 #include <linux/netfilter_ipv4/ip_tables.h>
53 #include <linux/ptrace.h>
54
55 #include <asm/types.h>
56 #include <asm/uaccess.h>
57 #include <asm/fpumacro.h>
58 #include <asm/semaphore.h>
59 #include <asm/mmu_context.h>
60 #include <asm/a.out.h>
61 #include <asm/compat_signal.h>
62
63 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
64 {
65 return sys_chown(filename, low2highuid(user), low2highgid(group));
66 }
67
68 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
69 {
70 return sys_lchown(filename, low2highuid(user), low2highgid(group));
71 }
72
73 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
74 {
75 return sys_fchown(fd, low2highuid(user), low2highgid(group));
76 }
77
78 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
79 {
80 return sys_setregid(low2highgid(rgid), low2highgid(egid));
81 }
82
83 asmlinkage long sys32_setgid16(u16 gid)
84 {
85 return sys_setgid((gid_t)gid);
86 }
87
88 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
89 {
90 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
91 }
92
93 asmlinkage long sys32_setuid16(u16 uid)
94 {
95 return sys_setuid((uid_t)uid);
96 }
97
98 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
99 {
100 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
101 low2highuid(suid));
102 }
103
104 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
105 {
106 int retval;
107
108 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
109 !(retval = put_user(high2lowuid(current->euid), euid)))
110 retval = put_user(high2lowuid(current->suid), suid);
111
112 return retval;
113 }
114
115 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
116 {
117 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
118 low2highgid(sgid));
119 }
120
121 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
122 {
123 int retval;
124
125 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
126 !(retval = put_user(high2lowgid(current->egid), egid)))
127 retval = put_user(high2lowgid(current->sgid), sgid);
128
129 return retval;
130 }
131
132 asmlinkage long sys32_setfsuid16(u16 uid)
133 {
134 return sys_setfsuid((uid_t)uid);
135 }
136
137 asmlinkage long sys32_setfsgid16(u16 gid)
138 {
139 return sys_setfsgid((gid_t)gid);
140 }
141
142 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
143 {
144 int i;
145 u16 group;
146
147 for (i = 0; i < group_info->ngroups; i++) {
148 group = (u16)GROUP_AT(group_info, i);
149 if (put_user(group, grouplist+i))
150 return -EFAULT;
151 }
152
153 return 0;
154 }
155
156 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
157 {
158 int i;
159 u16 group;
160
161 for (i = 0; i < group_info->ngroups; i++) {
162 if (get_user(group, grouplist+i))
163 return -EFAULT;
164 GROUP_AT(group_info, i) = (gid_t)group;
165 }
166
167 return 0;
168 }
169
170 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
171 {
172 int i;
173
174 if (gidsetsize < 0)
175 return -EINVAL;
176
177 get_group_info(current->group_info);
178 i = current->group_info->ngroups;
179 if (gidsetsize) {
180 if (i > gidsetsize) {
181 i = -EINVAL;
182 goto out;
183 }
184 if (groups16_to_user(grouplist, current->group_info)) {
185 i = -EFAULT;
186 goto out;
187 }
188 }
189 out:
190 put_group_info(current->group_info);
191 return i;
192 }
193
194 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
195 {
196 struct group_info *group_info;
197 int retval;
198
199 if (!capable(CAP_SETGID))
200 return -EPERM;
201 if ((unsigned)gidsetsize > NGROUPS_MAX)
202 return -EINVAL;
203
204 group_info = groups_alloc(gidsetsize);
205 if (!group_info)
206 return -ENOMEM;
207 retval = groups16_from_user(group_info, grouplist);
208 if (retval) {
209 put_group_info(group_info);
210 return retval;
211 }
212
213 retval = set_current_groups(group_info);
214 put_group_info(group_info);
215
216 return retval;
217 }
218
219 asmlinkage long sys32_getuid16(void)
220 {
221 return high2lowuid(current->uid);
222 }
223
224 asmlinkage long sys32_geteuid16(void)
225 {
226 return high2lowuid(current->euid);
227 }
228
229 asmlinkage long sys32_getgid16(void)
230 {
231 return high2lowgid(current->gid);
232 }
233
234 asmlinkage long sys32_getegid16(void)
235 {
236 return high2lowgid(current->egid);
237 }
238
239 /* 32-bit timeval and related flotsam. */
240
241 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
242 {
243 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
244 (__get_user(o->tv_sec, &i->tv_sec) |
245 __get_user(o->tv_usec, &i->tv_usec)));
246 }
247
248 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
249 {
250 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
251 (__put_user(i->tv_sec, &o->tv_sec) |
252 __put_user(i->tv_usec, &o->tv_usec)));
253 }
254
255 #ifdef CONFIG_SYSVIPC
256 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
257 {
258 int version;
259
260 version = call >> 16; /* hack for backward compatibility */
261 call &= 0xffff;
262
263 switch (call) {
264 case SEMTIMEDOP:
265 if (fifth)
266 /* sign extend semid */
267 return compat_sys_semtimedop((int)first,
268 compat_ptr(ptr), second,
269 compat_ptr(fifth));
270 /* else fall through for normal semop() */
271 case SEMOP:
272 /* struct sembuf is the same on 32 and 64bit :)) */
273 /* sign extend semid */
274 return sys_semtimedop((int)first, compat_ptr(ptr), second,
275 NULL);
276 case SEMGET:
277 /* sign extend key, nsems */
278 return sys_semget((int)first, (int)second, third);
279 case SEMCTL:
280 /* sign extend semid, semnum */
281 return compat_sys_semctl((int)first, (int)second, third,
282 compat_ptr(ptr));
283
284 case MSGSND:
285 /* sign extend msqid */
286 return compat_sys_msgsnd((int)first, (int)second, third,
287 compat_ptr(ptr));
288 case MSGRCV:
289 /* sign extend msqid, msgtyp */
290 return compat_sys_msgrcv((int)first, second, (int)fifth,
291 third, version, compat_ptr(ptr));
292 case MSGGET:
293 /* sign extend key */
294 return sys_msgget((int)first, second);
295 case MSGCTL:
296 /* sign extend msqid */
297 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
298
299 case SHMAT:
300 /* sign extend shmid */
301 return compat_sys_shmat((int)first, second, third, version,
302 compat_ptr(ptr));
303 case SHMDT:
304 return sys_shmdt(compat_ptr(ptr));
305 case SHMGET:
306 /* sign extend key_t */
307 return sys_shmget((int)first, second, third);
308 case SHMCTL:
309 /* sign extend shmid */
310 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
311
312 default:
313 return -ENOSYS;
314 };
315
316 return -ENOSYS;
317 }
318 #endif
319
320 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
321 {
322 if ((int)high < 0)
323 return -EINVAL;
324 else
325 return sys_truncate(path, (high << 32) | low);
326 }
327
328 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
329 {
330 if ((int)high < 0)
331 return -EINVAL;
332 else
333 return sys_ftruncate(fd, (high << 32) | low);
334 }
335
336 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
337 {
338 compat_ino_t ino;
339 int err;
340
341 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
342 !old_valid_dev(stat->rdev))
343 return -EOVERFLOW;
344
345 ino = stat->ino;
346 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
347 return -EOVERFLOW;
348
349 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
350 err |= put_user(stat->ino, &statbuf->st_ino);
351 err |= put_user(stat->mode, &statbuf->st_mode);
352 err |= put_user(stat->nlink, &statbuf->st_nlink);
353 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
354 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
355 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
356 err |= put_user(stat->size, &statbuf->st_size);
357 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
358 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
359 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
360 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
361 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
362 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
363 err |= put_user(stat->blksize, &statbuf->st_blksize);
364 err |= put_user(stat->blocks, &statbuf->st_blocks);
365 err |= put_user(0, &statbuf->__unused4[0]);
366 err |= put_user(0, &statbuf->__unused4[1]);
367
368 return err;
369 }
370
371 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
372 {
373 int err;
374
375 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
376 err |= put_user(stat->ino, &statbuf->st_ino);
377 err |= put_user(stat->mode, &statbuf->st_mode);
378 err |= put_user(stat->nlink, &statbuf->st_nlink);
379 err |= put_user(stat->uid, &statbuf->st_uid);
380 err |= put_user(stat->gid, &statbuf->st_gid);
381 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
382 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
383 err |= put_user(stat->size, &statbuf->st_size);
384 err |= put_user(stat->blksize, &statbuf->st_blksize);
385 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
386 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
387 err |= put_user(stat->blocks, &statbuf->st_blocks);
388 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
389 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
390 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
391 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
392 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
393 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
394 err |= put_user(0, &statbuf->__unused4);
395 err |= put_user(0, &statbuf->__unused5);
396
397 return err;
398 }
399
400 asmlinkage long compat_sys_stat64(char __user * filename,
401 struct compat_stat64 __user *statbuf)
402 {
403 struct kstat stat;
404 int error = vfs_stat(filename, &stat);
405
406 if (!error)
407 error = cp_compat_stat64(&stat, statbuf);
408 return error;
409 }
410
411 asmlinkage long compat_sys_lstat64(char __user * filename,
412 struct compat_stat64 __user *statbuf)
413 {
414 struct kstat stat;
415 int error = vfs_lstat(filename, &stat);
416
417 if (!error)
418 error = cp_compat_stat64(&stat, statbuf);
419 return error;
420 }
421
422 asmlinkage long compat_sys_fstat64(unsigned int fd,
423 struct compat_stat64 __user * statbuf)
424 {
425 struct kstat stat;
426 int error = vfs_fstat(fd, &stat);
427
428 if (!error)
429 error = cp_compat_stat64(&stat, statbuf);
430 return error;
431 }
432
433 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
434 struct compat_stat64 __user * statbuf, int flag)
435 {
436 struct kstat stat;
437 int error = -EINVAL;
438
439 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
440 goto out;
441
442 if (flag & AT_SYMLINK_NOFOLLOW)
443 error = vfs_lstat_fd(dfd, filename, &stat);
444 else
445 error = vfs_stat_fd(dfd, filename, &stat);
446
447 if (!error)
448 error = cp_compat_stat64(&stat, statbuf);
449
450 out:
451 return error;
452 }
453
454 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
455 {
456 return sys_sysfs(option, arg1, arg2);
457 }
458
459 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
460 {
461 struct timespec t;
462 int ret;
463 mm_segment_t old_fs = get_fs ();
464
465 set_fs (KERNEL_DS);
466 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
467 set_fs (old_fs);
468 if (put_compat_timespec(&t, interval))
469 return -EFAULT;
470 return ret;
471 }
472
473 asmlinkage long compat_sys_rt_sigprocmask(int how,
474 compat_sigset_t __user *set,
475 compat_sigset_t __user *oset,
476 compat_size_t sigsetsize)
477 {
478 sigset_t s;
479 compat_sigset_t s32;
480 int ret;
481 mm_segment_t old_fs = get_fs();
482
483 if (set) {
484 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
485 return -EFAULT;
486 switch (_NSIG_WORDS) {
487 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
488 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
489 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
490 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
491 }
492 }
493 set_fs (KERNEL_DS);
494 ret = sys_rt_sigprocmask(how,
495 set ? (sigset_t __user *) &s : NULL,
496 oset ? (sigset_t __user *) &s : NULL,
497 sigsetsize);
498 set_fs (old_fs);
499 if (ret) return ret;
500 if (oset) {
501 switch (_NSIG_WORDS) {
502 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
503 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
504 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
505 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
506 }
507 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
508 return -EFAULT;
509 }
510 return 0;
511 }
512
513 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
514 compat_size_t sigsetsize)
515 {
516 sigset_t s;
517 compat_sigset_t s32;
518 int ret;
519 mm_segment_t old_fs = get_fs();
520
521 set_fs (KERNEL_DS);
522 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
523 set_fs (old_fs);
524 if (!ret) {
525 switch (_NSIG_WORDS) {
526 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
527 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
528 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
529 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
530 }
531 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
532 return -EFAULT;
533 }
534 return ret;
535 }
536
537 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
538 struct compat_siginfo __user *uinfo)
539 {
540 siginfo_t info;
541 int ret;
542 mm_segment_t old_fs = get_fs();
543
544 if (copy_siginfo_from_user32(&info, uinfo))
545 return -EFAULT;
546
547 set_fs (KERNEL_DS);
548 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
549 set_fs (old_fs);
550 return ret;
551 }
552
553 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
554 struct old_sigaction32 __user *oact)
555 {
556 struct k_sigaction new_ka, old_ka;
557 int ret;
558
559 if (sig < 0) {
560 set_thread_flag(TIF_NEWSIGNALS);
561 sig = -sig;
562 }
563
564 if (act) {
565 compat_old_sigset_t mask;
566 u32 u_handler, u_restorer;
567
568 ret = get_user(u_handler, &act->sa_handler);
569 new_ka.sa.sa_handler = compat_ptr(u_handler);
570 ret |= __get_user(u_restorer, &act->sa_restorer);
571 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
572 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
573 ret |= __get_user(mask, &act->sa_mask);
574 if (ret)
575 return ret;
576 new_ka.ka_restorer = NULL;
577 siginitset(&new_ka.sa.sa_mask, mask);
578 }
579
580 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
581
582 if (!ret && oact) {
583 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
584 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
585 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
586 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
587 }
588
589 return ret;
590 }
591
592 asmlinkage long compat_sys_rt_sigaction(int sig,
593 struct sigaction32 __user *act,
594 struct sigaction32 __user *oact,
595 void __user *restorer,
596 compat_size_t sigsetsize)
597 {
598 struct k_sigaction new_ka, old_ka;
599 int ret;
600 compat_sigset_t set32;
601
602 /* XXX: Don't preclude handling different sized sigset_t's. */
603 if (sigsetsize != sizeof(compat_sigset_t))
604 return -EINVAL;
605
606 /* All tasks which use RT signals (effectively) use
607 * new style signals.
608 */
609 set_thread_flag(TIF_NEWSIGNALS);
610
611 if (act) {
612 u32 u_handler, u_restorer;
613
614 new_ka.ka_restorer = restorer;
615 ret = get_user(u_handler, &act->sa_handler);
616 new_ka.sa.sa_handler = compat_ptr(u_handler);
617 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
618 switch (_NSIG_WORDS) {
619 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
620 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
621 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
622 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
623 }
624 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
625 ret |= __get_user(u_restorer, &act->sa_restorer);
626 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
627 if (ret)
628 return -EFAULT;
629 }
630
631 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
632
633 if (!ret && oact) {
634 switch (_NSIG_WORDS) {
635 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
636 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
637 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
638 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
639 }
640 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
641 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
642 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
643 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
644 if (ret)
645 ret = -EFAULT;
646 }
647
648 return ret;
649 }
650
651 /*
652 * sparc32_execve() executes a new program after the asm stub has set
653 * things up for us. This should basically do what I want it to.
654 */
655 asmlinkage long sparc32_execve(struct pt_regs *regs)
656 {
657 int error, base = 0;
658 char *filename;
659
660 /* User register window flush is done by entry.S */
661
662 /* Check for indirect call. */
663 if ((u32)regs->u_regs[UREG_G1] == 0)
664 base = 1;
665
666 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
667 error = PTR_ERR(filename);
668 if (IS_ERR(filename))
669 goto out;
670
671 error = compat_do_execve(filename,
672 compat_ptr(regs->u_regs[base + UREG_I1]),
673 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
674
675 putname(filename);
676
677 if (!error) {
678 fprs_write(0);
679 current_thread_info()->xfsr[0] = 0;
680 current_thread_info()->fpsaved[0] = 0;
681 regs->tstate &= ~TSTATE_PEF;
682 task_lock(current);
683 current->ptrace &= ~PT_DTRACE;
684 task_unlock(current);
685 }
686 out:
687 return error;
688 }
689
690 #ifdef CONFIG_MODULES
691
692 asmlinkage long sys32_init_module(void __user *umod, u32 len,
693 const char __user *uargs)
694 {
695 return sys_init_module(umod, len, uargs);
696 }
697
698 asmlinkage long sys32_delete_module(const char __user *name_user,
699 unsigned int flags)
700 {
701 return sys_delete_module(name_user, flags);
702 }
703
704 #else /* CONFIG_MODULES */
705
706 asmlinkage long sys32_init_module(const char __user *name_user,
707 struct module __user *mod_user)
708 {
709 return -ENOSYS;
710 }
711
712 asmlinkage long sys32_delete_module(const char __user *name_user)
713 {
714 return -ENOSYS;
715 }
716
717 #endif /* CONFIG_MODULES */
718
719 /* Translations due to time_t size differences. Which affects all
720 sorts of things, like timeval and itimerval. */
721
722 extern struct timezone sys_tz;
723
724 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
725 struct timezone __user *tz)
726 {
727 if (tv) {
728 struct timeval ktv;
729 do_gettimeofday(&ktv);
730 if (put_tv32(tv, &ktv))
731 return -EFAULT;
732 }
733 if (tz) {
734 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
735 return -EFAULT;
736 }
737 return 0;
738 }
739
740 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
741 {
742 long usec;
743
744 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
745 return -EFAULT;
746 if (__get_user(o->tv_sec, &i->tv_sec))
747 return -EFAULT;
748 if (__get_user(usec, &i->tv_usec))
749 return -EFAULT;
750 o->tv_nsec = usec * 1000;
751 return 0;
752 }
753
754 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
755 struct timezone __user *tz)
756 {
757 struct timespec kts;
758 struct timezone ktz;
759
760 if (tv) {
761 if (get_ts32(&kts, tv))
762 return -EFAULT;
763 }
764 if (tz) {
765 if (copy_from_user(&ktz, tz, sizeof(ktz)))
766 return -EFAULT;
767 }
768
769 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
770 }
771
772 asmlinkage long sys32_utimes(char __user *filename,
773 struct compat_timeval __user *tvs)
774 {
775 struct timespec tv[2];
776
777 if (tvs) {
778 struct timeval ktvs[2];
779 if (get_tv32(&ktvs[0], tvs) ||
780 get_tv32(&ktvs[1], 1+tvs))
781 return -EFAULT;
782
783 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
784 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
785 return -EINVAL;
786
787 tv[0].tv_sec = ktvs[0].tv_sec;
788 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
789 tv[1].tv_sec = ktvs[1].tv_sec;
790 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
791 }
792
793 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
794 }
795
796 /* These are here just in case some old sparc32 binary calls it. */
797 asmlinkage long sys32_pause(void)
798 {
799 current->state = TASK_INTERRUPTIBLE;
800 schedule();
801 return -ERESTARTNOHAND;
802 }
803
804 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
805 char __user *ubuf,
806 compat_size_t count,
807 unsigned long poshi,
808 unsigned long poslo)
809 {
810 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
811 }
812
813 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
814 char __user *ubuf,
815 compat_size_t count,
816 unsigned long poshi,
817 unsigned long poslo)
818 {
819 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
820 }
821
822 asmlinkage long compat_sys_readahead(int fd,
823 unsigned long offhi,
824 unsigned long offlo,
825 compat_size_t count)
826 {
827 return sys_readahead(fd, (offhi << 32) | offlo, count);
828 }
829
830 long compat_sys_fadvise64(int fd,
831 unsigned long offhi,
832 unsigned long offlo,
833 compat_size_t len, int advice)
834 {
835 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
836 }
837
838 long compat_sys_fadvise64_64(int fd,
839 unsigned long offhi, unsigned long offlo,
840 unsigned long lenhi, unsigned long lenlo,
841 int advice)
842 {
843 return sys_fadvise64_64(fd,
844 (offhi << 32) | offlo,
845 (lenhi << 32) | lenlo,
846 advice);
847 }
848
849 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
850 compat_off_t __user *offset,
851 compat_size_t count)
852 {
853 mm_segment_t old_fs = get_fs();
854 int ret;
855 off_t of;
856
857 if (offset && get_user(of, offset))
858 return -EFAULT;
859
860 set_fs(KERNEL_DS);
861 ret = sys_sendfile(out_fd, in_fd,
862 offset ? (off_t __user *) &of : NULL,
863 count);
864 set_fs(old_fs);
865
866 if (offset && put_user(of, offset))
867 return -EFAULT;
868
869 return ret;
870 }
871
872 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
873 compat_loff_t __user *offset,
874 compat_size_t count)
875 {
876 mm_segment_t old_fs = get_fs();
877 int ret;
878 loff_t lof;
879
880 if (offset && get_user(lof, offset))
881 return -EFAULT;
882
883 set_fs(KERNEL_DS);
884 ret = sys_sendfile64(out_fd, in_fd,
885 offset ? (loff_t __user *) &lof : NULL,
886 count);
887 set_fs(old_fs);
888
889 if (offset && put_user(lof, offset))
890 return -EFAULT;
891
892 return ret;
893 }
894
895 /* This is just a version for 32-bit applications which does
896 * not force O_LARGEFILE on.
897 */
898
899 asmlinkage long sparc32_open(const char __user *filename,
900 int flags, int mode)
901 {
902 return do_sys_open(AT_FDCWD, filename, flags, mode);
903 }
904
905 extern unsigned long do_mremap(unsigned long addr,
906 unsigned long old_len, unsigned long new_len,
907 unsigned long flags, unsigned long new_addr);
908
909 asmlinkage unsigned long sys32_mremap(unsigned long addr,
910 unsigned long old_len, unsigned long new_len,
911 unsigned long flags, u32 __new_addr)
912 {
913 struct vm_area_struct *vma;
914 unsigned long ret = -EINVAL;
915 unsigned long new_addr = __new_addr;
916
917 if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
918 goto out;
919 if (addr > STACK_TOP32 - old_len)
920 goto out;
921 down_write(&current->mm->mmap_sem);
922 if (flags & MREMAP_FIXED) {
923 if (new_addr > STACK_TOP32 - new_len)
924 goto out_sem;
925 } else if (addr > STACK_TOP32 - new_len) {
926 unsigned long map_flags = 0;
927 struct file *file = NULL;
928
929 ret = -ENOMEM;
930 if (!(flags & MREMAP_MAYMOVE))
931 goto out_sem;
932
933 vma = find_vma(current->mm, addr);
934 if (vma) {
935 if (vma->vm_flags & VM_SHARED)
936 map_flags |= MAP_SHARED;
937 file = vma->vm_file;
938 }
939
940 /* MREMAP_FIXED checked above. */
941 new_addr = get_unmapped_area(file, addr, new_len,
942 vma ? vma->vm_pgoff : 0,
943 map_flags);
944 ret = new_addr;
945 if (new_addr & ~PAGE_MASK)
946 goto out_sem;
947 flags |= MREMAP_FIXED;
948 }
949 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
950 out_sem:
951 up_write(&current->mm->mmap_sem);
952 out:
953 return ret;
954 }
955
956 struct __sysctl_args32 {
957 u32 name;
958 int nlen;
959 u32 oldval;
960 u32 oldlenp;
961 u32 newval;
962 u32 newlen;
963 u32 __unused[4];
964 };
965
966 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
967 {
968 #ifndef CONFIG_SYSCTL_SYSCALL
969 return -ENOSYS;
970 #else
971 struct __sysctl_args32 tmp;
972 int error;
973 size_t oldlen, __user *oldlenp = NULL;
974 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
975
976 if (copy_from_user(&tmp, args, sizeof(tmp)))
977 return -EFAULT;
978
979 if (tmp.oldval && tmp.oldlenp) {
980 /* Duh, this is ugly and might not work if sysctl_args
981 is in read-only memory, but do_sysctl does indirectly
982 a lot of uaccess in both directions and we'd have to
983 basically copy the whole sysctl.c here, and
984 glibc's __sysctl uses rw memory for the structure
985 anyway. */
986 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
987 put_user(oldlen, (size_t __user *)addr))
988 return -EFAULT;
989 oldlenp = (size_t __user *)addr;
990 }
991
992 lock_kernel();
993 error = do_sysctl((int __user *)(unsigned long) tmp.name,
994 tmp.nlen,
995 (void __user *)(unsigned long) tmp.oldval,
996 oldlenp,
997 (void __user *)(unsigned long) tmp.newval,
998 tmp.newlen);
999 unlock_kernel();
1000 if (oldlenp) {
1001 if (!error) {
1002 if (get_user(oldlen, (size_t __user *)addr) ||
1003 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1004 error = -EFAULT;
1005 }
1006 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1007 error = -EFAULT;
1008 }
1009 return error;
1010 #endif
1011 }
1012
1013 long sys32_lookup_dcookie(unsigned long cookie_high,
1014 unsigned long cookie_low,
1015 char __user *buf, size_t len)
1016 {
1017 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1018 buf, len);
1019 }
1020
1021 long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
1022 {
1023 return sys_sync_file_range(fd,
1024 (off_high << 32) | off_low,
1025 (nb_high << 32) | nb_low,
1026 flags);
1027 }
1028
1029 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
1030 u32 lenhi, u32 lenlo)
1031 {
1032 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
1033 ((loff_t)lenhi << 32) | lenlo);
1034 }
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