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Linux 2.6.13-rc4
[linux-2.6/next.git] / arch / sparc64 / kernel / sys_sparc32.c
blob1d3aa588df8a5a8466113947ae3d3102c021c1e1
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);
355 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
356 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
357 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
358 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
359 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
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
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
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 {
1005 char * tmp;
1006 int fd, error;
1007
1008 tmp = getname(filename);
1009 fd = PTR_ERR(tmp);
1010 if (!IS_ERR(tmp)) {
1011 fd = get_unused_fd();
1012 if (fd >= 0) {
1013 struct file * f = filp_open(tmp, flags, mode);
1014 error = PTR_ERR(f);
1015 if (IS_ERR(f))
1016 goto out_error;
1017 fd_install(fd, f);
1018 }
1019 out:
1020 putname(tmp);
1021 }
1022 return fd;
1023
1024 out_error:
1025 put_unused_fd(fd);
1026 fd = error;
1027 goto out;
1028 }
1029
1030 extern unsigned long do_mremap(unsigned long addr,
1031 unsigned long old_len, unsigned long new_len,
1032 unsigned long flags, unsigned long new_addr);
1033
1034 asmlinkage unsigned long sys32_mremap(unsigned long addr,
1035 unsigned long old_len, unsigned long new_len,
1036 unsigned long flags, u32 __new_addr)
1037 {
1038 struct vm_area_struct *vma;
1039 unsigned long ret = -EINVAL;
1040 unsigned long new_addr = __new_addr;
1041
1042 if (old_len > 0xf0000000UL || new_len > 0xf0000000UL)
1043 goto out;
1044 if (addr > 0xf0000000UL - old_len)
1045 goto out;
1046 down_write(&current->mm->mmap_sem);
1047 if (flags & MREMAP_FIXED) {
1048 if (new_addr > 0xf0000000UL - new_len)
1049 goto out_sem;
1050 } else if (addr > 0xf0000000UL - new_len) {
1051 unsigned long map_flags = 0;
1052 struct file *file = NULL;
1053
1054 ret = -ENOMEM;
1055 if (!(flags & MREMAP_MAYMOVE))
1056 goto out_sem;
1057
1058 vma = find_vma(current->mm, addr);
1059 if (vma) {
1060 if (vma->vm_flags & VM_SHARED)
1061 map_flags |= MAP_SHARED;
1062 file = vma->vm_file;
1063 }
1064
1065 /* MREMAP_FIXED checked above. */
1066 new_addr = get_unmapped_area(file, addr, new_len,
1067 vma ? vma->vm_pgoff : 0,
1068 map_flags);
1069 ret = new_addr;
1070 if (new_addr & ~PAGE_MASK)
1071 goto out_sem;
1072 flags |= MREMAP_FIXED;
1073 }
1074 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
1075 out_sem:
1076 up_write(&current->mm->mmap_sem);
1077 out:
1078 return ret;
1079 }
1080
1081 struct __sysctl_args32 {
1082 u32 name;
1083 int nlen;
1084 u32 oldval;
1085 u32 oldlenp;
1086 u32 newval;
1087 u32 newlen;
1088 u32 __unused[4];
1089 };
1090
1091 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1092 {
1093 #ifndef CONFIG_SYSCTL
1094 return -ENOSYS;
1095 #else
1096 struct __sysctl_args32 tmp;
1097 int error;
1098 size_t oldlen, __user *oldlenp = NULL;
1099 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
1100
1101 if (copy_from_user(&tmp, args, sizeof(tmp)))
1102 return -EFAULT;
1103
1104 if (tmp.oldval && tmp.oldlenp) {
1105 /* Duh, this is ugly and might not work if sysctl_args
1106 is in read-only memory, but do_sysctl does indirectly
1107 a lot of uaccess in both directions and we'd have to
1108 basically copy the whole sysctl.c here, and
1109 glibc's __sysctl uses rw memory for the structure
1110 anyway. */
1111 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
1112 put_user(oldlen, (size_t __user *)addr))
1113 return -EFAULT;
1114 oldlenp = (size_t __user *)addr;
1115 }
1116
1117 lock_kernel();
1118 error = do_sysctl((int __user *)(unsigned long) tmp.name,
1119 tmp.nlen,
1120 (void __user *)(unsigned long) tmp.oldval,
1121 oldlenp,
1122 (void __user *)(unsigned long) tmp.newval,
1123 tmp.newlen);
1124 unlock_kernel();
1125 if (oldlenp) {
1126 if (!error) {
1127 if (get_user(oldlen, (size_t __user *)addr) ||
1128 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1129 error = -EFAULT;
1130 }
1131 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1132 error = -EFAULT;
1133 }
1134 return error;
1135 #endif
1136 }
1137
1138 long sys32_lookup_dcookie(unsigned long cookie_high,
1139 unsigned long cookie_low,
1140 char __user *buf, size_t len)
1141 {
1142 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1143 buf, len);
1144 }
1145
1146 extern asmlinkage long
1147 sys_timer_create(clockid_t which_clock,
1148 struct sigevent __user *timer_event_spec,
1149 timer_t __user *created_timer_id);
1150
1151 long
1152 sys32_timer_create(u32 clock, struct compat_sigevent __user *se32,
1153 timer_t __user *timer_id)
1154 {
1155 struct sigevent se;
1156 mm_segment_t oldfs;
1157 timer_t t;
1158 long err;
1159
1160 if (se32 == NULL)
1161 return sys_timer_create(clock, NULL, timer_id);
1162
1163 if (get_compat_sigevent(&se, se32))
1164 return -EFAULT;
1165
1166 if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
1167 return -EFAULT;
1168
1169 oldfs = get_fs();
1170 set_fs(KERNEL_DS);
1171 err = sys_timer_create(clock,
1172 (struct sigevent __user *) &se,
1173 (timer_t __user *) &t);
1174 set_fs(oldfs);
1175
1176 if (!err)
1177 err = __put_user (t, timer_id);
1178
1179 return err;
1180 }
linux-next