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[deliverable/linux.git] / arch / sparc64 / kernel / sys_sparc32.c
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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>
65
66asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
67{
68 return sys_chown(filename, low2highuid(user), low2highgid(group));
69}
70
71asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
72{
73 return sys_lchown(filename, low2highuid(user), low2highgid(group));
74}
75
76asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
77{
78 return sys_fchown(fd, low2highuid(user), low2highgid(group));
79}
80
81asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
82{
83 return sys_setregid(low2highgid(rgid), low2highgid(egid));
84}
85
86asmlinkage long sys32_setgid16(u16 gid)
87{
88 return sys_setgid((gid_t)gid);
89}
90
91asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
92{
93 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
94}
95
96asmlinkage long sys32_setuid16(u16 uid)
97{
98 return sys_setuid((uid_t)uid);
99}
100
101asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
102{
103 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
104 low2highuid(suid));
105}
106
107asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
108{
109 int retval;
110
111 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
112 !(retval = put_user(high2lowuid(current->euid), euid)))
113 retval = put_user(high2lowuid(current->suid), suid);
114
115 return retval;
116}
117
118asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
119{
120 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
121 low2highgid(sgid));
122}
123
124asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
125{
126 int retval;
127
128 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
129 !(retval = put_user(high2lowgid(current->egid), egid)))
130 retval = put_user(high2lowgid(current->sgid), sgid);
131
132 return retval;
133}
134
135asmlinkage long sys32_setfsuid16(u16 uid)
136{
137 return sys_setfsuid((uid_t)uid);
138}
139
140asmlinkage long sys32_setfsgid16(u16 gid)
141{
142 return sys_setfsgid((gid_t)gid);
143}
144
145static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
146{
147 int i;
148 u16 group;
149
150 for (i = 0; i < group_info->ngroups; i++) {
151 group = (u16)GROUP_AT(group_info, i);
152 if (put_user(group, grouplist+i))
153 return -EFAULT;
154 }
155
156 return 0;
157}
158
159static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
160{
161 int i;
162 u16 group;
163
164 for (i = 0; i < group_info->ngroups; i++) {
165 if (get_user(group, grouplist+i))
166 return -EFAULT;
167 GROUP_AT(group_info, i) = (gid_t)group;
168 }
169
170 return 0;
171}
172
173asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
174{
175 int i;
176
177 if (gidsetsize < 0)
178 return -EINVAL;
179
180 get_group_info(current->group_info);
181 i = current->group_info->ngroups;
182 if (gidsetsize) {
183 if (i > gidsetsize) {
184 i = -EINVAL;
185 goto out;
186 }
187 if (groups16_to_user(grouplist, current->group_info)) {
188 i = -EFAULT;
189 goto out;
190 }
191 }
192out:
193 put_group_info(current->group_info);
194 return i;
195}
196
197asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
198{
199 struct group_info *group_info;
200 int retval;
201
202 if (!capable(CAP_SETGID))
203 return -EPERM;
204 if ((unsigned)gidsetsize > NGROUPS_MAX)
205 return -EINVAL;
206
207 group_info = groups_alloc(gidsetsize);
208 if (!group_info)
209 return -ENOMEM;
210 retval = groups16_from_user(group_info, grouplist);
211 if (retval) {
212 put_group_info(group_info);
213 return retval;
214 }
215
216 retval = set_current_groups(group_info);
217 put_group_info(group_info);
218
219 return retval;
220}
221
222asmlinkage long sys32_getuid16(void)
223{
224 return high2lowuid(current->uid);
225}
226
227asmlinkage long sys32_geteuid16(void)
228{
229 return high2lowuid(current->euid);
230}
231
232asmlinkage long sys32_getgid16(void)
233{
234 return high2lowgid(current->gid);
235}
236
237asmlinkage long sys32_getegid16(void)
238{
239 return high2lowgid(current->egid);
240}
241
242/* 32-bit timeval and related flotsam. */
243
244static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
245{
246 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
247 (__get_user(o->tv_sec, &i->tv_sec) |
248 __get_user(o->tv_usec, &i->tv_usec)));
249}
250
251static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
252{
253 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
254 (__put_user(i->tv_sec, &o->tv_sec) |
255 __put_user(i->tv_usec, &o->tv_usec)));
256}
257
258#ifdef CONFIG_SYSVIPC
259asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
260{
261 int version;
262
263 version = call >> 16; /* hack for backward compatibility */
264 call &= 0xffff;
265
266 switch (call) {
267 case SEMTIMEDOP:
268 if (fifth)
269 /* sign extend semid */
270 return compat_sys_semtimedop((int)first,
271 compat_ptr(ptr), second,
272 compat_ptr(fifth));
273 /* else fall through for normal semop() */
274 case SEMOP:
275 /* struct sembuf is the same on 32 and 64bit :)) */
276 /* sign extend semid */
277 return sys_semtimedop((int)first, compat_ptr(ptr), second,
278 NULL);
279 case SEMGET:
280 /* sign extend key, nsems */
281 return sys_semget((int)first, (int)second, third);
282 case SEMCTL:
283 /* sign extend semid, semnum */
284 return compat_sys_semctl((int)first, (int)second, third,
285 compat_ptr(ptr));
286
287 case MSGSND:
288 /* sign extend msqid */
289 return compat_sys_msgsnd((int)first, (int)second, third,
290 compat_ptr(ptr));
291 case MSGRCV:
292 /* sign extend msqid, msgtyp */
293 return compat_sys_msgrcv((int)first, second, (int)fifth,
294 third, version, compat_ptr(ptr));
295 case MSGGET:
296 /* sign extend key */
297 return sys_msgget((int)first, second);
298 case MSGCTL:
299 /* sign extend msqid */
300 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
301
302 case SHMAT:
303 /* sign extend shmid */
304 return compat_sys_shmat((int)first, second, third, version,
305 compat_ptr(ptr));
306 case SHMDT:
307 return sys_shmdt(compat_ptr(ptr));
308 case SHMGET:
309 /* sign extend key_t */
310 return sys_shmget((int)first, second, third);
311 case SHMCTL:
312 /* sign extend shmid */
313 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
314
315 default:
316 return -ENOSYS;
317 };
318
319 return -ENOSYS;
320}
321#endif
322
323asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
324{
325 if ((int)high < 0)
326 return -EINVAL;
327 else
328 return sys_truncate(path, (high << 32) | low);
329}
330
331asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
332{
333 if ((int)high < 0)
334 return -EINVAL;
335 else
336 return sys_ftruncate(fd, (high << 32) | low);
337}
338
339int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
340{
341 int err;
342
343 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
344 !old_valid_dev(stat->rdev))
345 return -EOVERFLOW;
346
347 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
348 err |= put_user(stat->ino, &statbuf->st_ino);
349 err |= put_user(stat->mode, &statbuf->st_mode);
350 err |= put_user(stat->nlink, &statbuf->st_nlink);
351 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
352 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
353 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
354 err |= put_user(stat->size, &statbuf->st_size);
355 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
0ba4da03 356 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
1da177e4 357 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
0ba4da03 358 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
1da177e4 359 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
0ba4da03 360 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
1da177e4
LT		 361 err |= put_user(stat->blksize, &statbuf->st_blksize);
362 err |= put_user(stat->blocks, &statbuf->st_blocks);
363 err |= put_user(0, &statbuf->__unused4[0]);
364 err |= put_user(0, &statbuf->__unused4[1]);
365
366 return err;
367}
368
0ba4da03
DM		 369int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
370{
371 int err;
372
373 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
374 err |= put_user(stat->ino, &statbuf->st_ino);
375 err |= put_user(stat->mode, &statbuf->st_mode);
376 err |= put_user(stat->nlink, &statbuf->st_nlink);
377 err |= put_user(stat->uid, &statbuf->st_uid);
378 err |= put_user(stat->gid, &statbuf->st_gid);
379 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
380 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
381 err |= put_user(stat->size, &statbuf->st_size);
382 err |= put_user(stat->blksize, &statbuf->st_blksize);
383 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
384 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
385 err |= put_user(stat->blocks, &statbuf->st_blocks);
386 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
387 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
388 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
389 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
390 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
391 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
392 err |= put_user(0, &statbuf->__unused4);
393 err |= put_user(0, &statbuf->__unused5);
394
395 return err;
396}
397
398asmlinkage long compat_sys_stat64(char __user * filename,
399 struct compat_stat64 __user *statbuf)
400{
401 struct kstat stat;
402 int error = vfs_stat(filename, &stat);
403
404 if (!error)
405 error = cp_compat_stat64(&stat, statbuf);
406 return error;
407}
408
409asmlinkage long compat_sys_lstat64(char __user * filename,
410 struct compat_stat64 __user *statbuf)
411{
412 struct kstat stat;
413 int error = vfs_lstat(filename, &stat);
414
415 if (!error)
416 error = cp_compat_stat64(&stat, statbuf);
417 return error;
418}
419
420asmlinkage long compat_sys_fstat64(unsigned int fd,
421 struct compat_stat64 __user * statbuf)
422{
423 struct kstat stat;
424 int error = vfs_fstat(fd, &stat);
425
426 if (!error)
427 error = cp_compat_stat64(&stat, statbuf);
428 return error;
429}
430
40ad7a6a
DM		 431asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
432 struct compat_stat64 __user * statbuf, int flag)
433{
434 struct kstat stat;
435 int error = -EINVAL;
436
437 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
438 goto out;
439
440 if (flag & AT_SYMLINK_NOFOLLOW)
441 error = vfs_lstat_fd(dfd, filename, &stat);
442 else
443 error = vfs_stat_fd(dfd, filename, &stat);
444
445 if (!error)
446 error = cp_compat_stat64(&stat, statbuf);
447
448out:
449 return error;
450}
451
1da177e4
LT		 452asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
453{
454 return sys_sysfs(option, arg1, arg2);
455}
456
457struct sysinfo32 {
458 s32 uptime;
459 u32 loads[3];
460 u32 totalram;
461 u32 freeram;
462 u32 sharedram;
463 u32 bufferram;
464 u32 totalswap;
465 u32 freeswap;
466 unsigned short procs;
467 unsigned short pad;
468 u32 totalhigh;
469 u32 freehigh;
470 u32 mem_unit;
471 char _f[20-2*sizeof(int)-sizeof(int)];
472};
473
474asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
475{
476 struct sysinfo s;
477 int ret, err;
478 int bitcount = 0;
479 mm_segment_t old_fs = get_fs ();
480
481 set_fs(KERNEL_DS);
482 ret = sys_sysinfo((struct sysinfo __user *) &s);
483 set_fs(old_fs);
484 /* Check to see if any memory value is too large for 32-bit and
485 * scale down if needed.
486 */
487 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
488 while (s.mem_unit < PAGE_SIZE) {
489 s.mem_unit <<= 1;
490 bitcount++;
491 }
492 s.totalram >>= bitcount;
493 s.freeram >>= bitcount;
494 s.sharedram >>= bitcount;
495 s.bufferram >>= bitcount;
496 s.totalswap >>= bitcount;
497 s.freeswap >>= bitcount;
498 s.totalhigh >>= bitcount;
499 s.freehigh >>= bitcount;
500 }
501
502 err = put_user (s.uptime, &info->uptime);
503 err |= __put_user (s.loads[0], &info->loads[0]);
504 err |= __put_user (s.loads[1], &info->loads[1]);
505 err |= __put_user (s.loads[2], &info->loads[2]);
506 err |= __put_user (s.totalram, &info->totalram);
507 err |= __put_user (s.freeram, &info->freeram);
508 err |= __put_user (s.sharedram, &info->sharedram);
509 err |= __put_user (s.bufferram, &info->bufferram);
510 err |= __put_user (s.totalswap, &info->totalswap);
511 err |= __put_user (s.freeswap, &info->freeswap);
512 err |= __put_user (s.procs, &info->procs);
513 err |= __put_user (s.totalhigh, &info->totalhigh);
514 err |= __put_user (s.freehigh, &info->freehigh);
515 err |= __put_user (s.mem_unit, &info->mem_unit);
516 if (err)
517 return -EFAULT;
518 return ret;
519}
520
521asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
522{
523 struct timespec t;
524 int ret;
525 mm_segment_t old_fs = get_fs ();
526
527 set_fs (KERNEL_DS);
528 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
529 set_fs (old_fs);
530 if (put_compat_timespec(&t, interval))
531 return -EFAULT;
532 return ret;
533}
534
535asmlinkage long compat_sys_rt_sigprocmask(int how,
536 compat_sigset_t __user *set,
537 compat_sigset_t __user *oset,
538 compat_size_t sigsetsize)
539{
540 sigset_t s;
541 compat_sigset_t s32;
542 int ret;
543 mm_segment_t old_fs = get_fs();
544
545 if (set) {
546 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
547 return -EFAULT;
548 switch (_NSIG_WORDS) {
549 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
550 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
551 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
552 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
553 }
554 }
555 set_fs (KERNEL_DS);
556 ret = sys_rt_sigprocmask(how,
557 set ? (sigset_t __user *) &s : NULL,
558 oset ? (sigset_t __user *) &s : NULL,
559 sigsetsize);
560 set_fs (old_fs);
561 if (ret) return ret;
562 if (oset) {
563 switch (_NSIG_WORDS) {
564 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
565 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
566 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
567 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
568 }
569 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
570 return -EFAULT;
571 }
572 return 0;
573}
574
575asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
576 compat_size_t sigsetsize)
577{
578 sigset_t s;
579 compat_sigset_t s32;
580 int ret;
581 mm_segment_t old_fs = get_fs();
582
583 set_fs (KERNEL_DS);
584 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
585 set_fs (old_fs);
586 if (!ret) {
587 switch (_NSIG_WORDS) {
588 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
589 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
590 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
591 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
592 }
593 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
594 return -EFAULT;
595 }
596 return ret;
597}
598
599asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
600 struct compat_siginfo __user *uinfo)
601{
602 siginfo_t info;
603 int ret;
604 mm_segment_t old_fs = get_fs();
605
606 if (copy_siginfo_from_user32(&info, uinfo))
607 return -EFAULT;
608
609 set_fs (KERNEL_DS);
610 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
611 set_fs (old_fs);
612 return ret;
613}
614
615asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
616 struct old_sigaction32 __user *oact)
617{
618 struct k_sigaction new_ka, old_ka;
619 int ret;
620
621 if (sig < 0) {
622 set_thread_flag(TIF_NEWSIGNALS);
623 sig = -sig;
624 }
625
626 if (act) {
627 compat_old_sigset_t mask;
628 u32 u_handler, u_restorer;
629
630 ret = get_user(u_handler, &act->sa_handler);
631 new_ka.sa.sa_handler = compat_ptr(u_handler);
632 ret |= __get_user(u_restorer, &act->sa_restorer);
633 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
634 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
635 ret |= __get_user(mask, &act->sa_mask);
636 if (ret)
637 return ret;
638 new_ka.ka_restorer = NULL;
639 siginitset(&new_ka.sa.sa_mask, mask);
640 }
641
642 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
643
644 if (!ret && oact) {
645 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
646 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
647 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
648 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
649 }
650
651 return ret;
652}
653
654asmlinkage long compat_sys_rt_sigaction(int sig,
655 struct sigaction32 __user *act,
656 struct sigaction32 __user *oact,
657 void __user *restorer,
658 compat_size_t sigsetsize)
659{
660 struct k_sigaction new_ka, old_ka;
661 int ret;
662 compat_sigset_t set32;
663
664 /* XXX: Don't preclude handling different sized sigset_t's. */
665 if (sigsetsize != sizeof(compat_sigset_t))
666 return -EINVAL;
667
668 /* All tasks which use RT signals (effectively) use
669 * new style signals.
670 */
671 set_thread_flag(TIF_NEWSIGNALS);
672
673 if (act) {
674 u32 u_handler, u_restorer;
675
676 new_ka.ka_restorer = restorer;
677 ret = get_user(u_handler, &act->sa_handler);
678 new_ka.sa.sa_handler = compat_ptr(u_handler);
679 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
680 switch (_NSIG_WORDS) {
681 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
682 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
683 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
684 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
685 }
686 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
687 ret |= __get_user(u_restorer, &act->sa_restorer);
688 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
689 if (ret)
690 return -EFAULT;
691 }
692
693 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
694
695 if (!ret && oact) {
696 switch (_NSIG_WORDS) {
697 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
698 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
699 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
700 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
701 }
702 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
703 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
704 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
705 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
706 if (ret)
707 ret = -EFAULT;
708 }
709
710 return ret;
711}
712
713/*
714 * sparc32_execve() executes a new program after the asm stub has set
715 * things up for us. This should basically do what I want it to.
716 */
717asmlinkage long sparc32_execve(struct pt_regs *regs)
718{
719 int error, base = 0;
720 char *filename;
721
722 /* User register window flush is done by entry.S */
723
724 /* Check for indirect call. */
725 if ((u32)regs->u_regs[UREG_G1] == 0)
726 base = 1;
727
728 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
729 error = PTR_ERR(filename);
730 if (IS_ERR(filename))
731 goto out;
732
733 error = compat_do_execve(filename,
734 compat_ptr(regs->u_regs[base + UREG_I1]),
735 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
736
737 putname(filename);
738
739 if (!error) {
740 fprs_write(0);
741 current_thread_info()->xfsr[0] = 0;
742 current_thread_info()->fpsaved[0] = 0;
743 regs->tstate &= ~TSTATE_PEF;
744 task_lock(current);
745 current->ptrace &= ~PT_DTRACE;
746 task_unlock(current);
747 }
748out:
749 return error;
750}
751
752#ifdef CONFIG_MODULES
753
754asmlinkage long sys32_init_module(void __user *umod, u32 len,
755 const char __user *uargs)
756{
757 return sys_init_module(umod, len, uargs);
758}
759
760asmlinkage long sys32_delete_module(const char __user *name_user,
761 unsigned int flags)
762{
763 return sys_delete_module(name_user, flags);
764}
765
766#else /* CONFIG_MODULES */
767
768asmlinkage long sys32_init_module(const char __user *name_user,
769 struct module __user *mod_user)
770{
771 return -ENOSYS;
772}
773
774asmlinkage long sys32_delete_module(const char __user *name_user)
775{
776 return -ENOSYS;
777}
778
779#endif /* CONFIG_MODULES */
780
781/* Translations due to time_t size differences. Which affects all
782 sorts of things, like timeval and itimerval. */
783
784extern struct timezone sys_tz;
785
786asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
787 struct timezone __user *tz)
788{
789 if (tv) {
790 struct timeval ktv;
791 do_gettimeofday(&ktv);
792 if (put_tv32(tv, &ktv))
793 return -EFAULT;
794 }
795 if (tz) {
796 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
797 return -EFAULT;
798 }
799 return 0;
800}
801
802static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
803{
804 long usec;
805
806 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
807 return -EFAULT;
808 if (__get_user(o->tv_sec, &i->tv_sec))
809 return -EFAULT;
810 if (__get_user(usec, &i->tv_usec))
811 return -EFAULT;
812 o->tv_nsec = usec * 1000;
813 return 0;
814}
815
816asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
817 struct timezone __user *tz)
818{
819 struct timespec kts;
820 struct timezone ktz;
821
822 if (tv) {
823 if (get_ts32(&kts, tv))
824 return -EFAULT;
825 }
826 if (tz) {
827 if (copy_from_user(&ktz, tz, sizeof(ktz)))
828 return -EFAULT;
829 }
830
831 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
832}
833
834asmlinkage long sys32_utimes(char __user *filename,
835 struct compat_timeval __user *tvs)
836{
837 struct timeval ktvs[2];
838
839 if (tvs) {
840 if (get_tv32(&ktvs[0], tvs) ||
841 get_tv32(&ktvs[1], 1+tvs))
842 return -EFAULT;
843 }
844
5590ff0d 845 return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL));
1da177e4
LT		 846}
847
848/* These are here just in case some old sparc32 binary calls it. */
849asmlinkage long sys32_pause(void)
850{
851 current->state = TASK_INTERRUPTIBLE;
852 schedule();
853 return -ERESTARTNOHAND;
854}
855
856asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
857 char __user *ubuf,
858 compat_size_t count,
859 unsigned long poshi,
860 unsigned long poslo)
861{
862 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
863}
864
865asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
866 char __user *ubuf,
867 compat_size_t count,
868 unsigned long poshi,
869 unsigned long poslo)
870{
871 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
872}
873
874asmlinkage long compat_sys_readahead(int fd,
875 unsigned long offhi,
876 unsigned long offlo,
877 compat_size_t count)
878{
879 return sys_readahead(fd, (offhi << 32) | offlo, count);
880}
881
882long compat_sys_fadvise64(int fd,
883 unsigned long offhi,
884 unsigned long offlo,
885 compat_size_t len, int advice)
886{
887 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
888}
889
890long compat_sys_fadvise64_64(int fd,
891 unsigned long offhi, unsigned long offlo,
892 unsigned long lenhi, unsigned long lenlo,
893 int advice)
894{
895 return sys_fadvise64_64(fd,
896 (offhi << 32) | offlo,
897 (lenhi << 32) | lenlo,
898 advice);
899}
900
901asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
902 compat_off_t __user *offset,
903 compat_size_t count)
904{
905 mm_segment_t old_fs = get_fs();
906 int ret;
907 off_t of;
908
909 if (offset && get_user(of, offset))
910 return -EFAULT;
911
912 set_fs(KERNEL_DS);
913 ret = sys_sendfile(out_fd, in_fd,
914 offset ? (off_t __user *) &of : NULL,
915 count);
916 set_fs(old_fs);
917
918 if (offset && put_user(of, offset))
919 return -EFAULT;
920
921 return ret;
922}
923
924asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
925 compat_loff_t __user *offset,
926 compat_size_t count)
927{
928 mm_segment_t old_fs = get_fs();
929 int ret;
930 loff_t lof;
931
932 if (offset && get_user(lof, offset))
933 return -EFAULT;
934
935 set_fs(KERNEL_DS);
936 ret = sys_sendfile64(out_fd, in_fd,
937 offset ? (loff_t __user *) &lof : NULL,
938 count);
939 set_fs(old_fs);
940
941 if (offset && put_user(lof, offset))
942 return -EFAULT;
943
944 return ret;
945}
946
947/* Handle adjtimex compatibility. */
948
949struct timex32 {
950 u32 modes;
951 s32 offset, freq, maxerror, esterror;
952 s32 status, constant, precision, tolerance;
953 struct compat_timeval time;
954 s32 tick;
955 s32 ppsfreq, jitter, shift, stabil;
956 s32 jitcnt, calcnt, errcnt, stbcnt;
957 s32 :32; s32 :32; s32 :32; s32 :32;
958 s32 :32; s32 :32; s32 :32; s32 :32;
959 s32 :32; s32 :32; s32 :32; s32 :32;
960};
961
962extern int do_adjtimex(struct timex *);
963
964asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
965{
966 struct timex txc;
967 int ret;
968
969 memset(&txc, 0, sizeof(struct timex));
970
971 if (get_user(txc.modes, &utp->modes) ||
972 __get_user(txc.offset, &utp->offset) ||
973 __get_user(txc.freq, &utp->freq) ||
974 __get_user(txc.maxerror, &utp->maxerror) ||
975 __get_user(txc.esterror, &utp->esterror) ||
976 __get_user(txc.status, &utp->status) ||
977 __get_user(txc.constant, &utp->constant) ||
978 __get_user(txc.precision, &utp->precision) ||
979 __get_user(txc.tolerance, &utp->tolerance) ||
980 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
981 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
982 __get_user(txc.tick, &utp->tick) ||
983 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
984 __get_user(txc.jitter, &utp->jitter) ||
985 __get_user(txc.shift, &utp->shift) ||
986 __get_user(txc.stabil, &utp->stabil) ||
987 __get_user(txc.jitcnt, &utp->jitcnt) ||
988 __get_user(txc.calcnt, &utp->calcnt) ||
989 __get_user(txc.errcnt, &utp->errcnt) ||
990 __get_user(txc.stbcnt, &utp->stbcnt))
991 return -EFAULT;
992
993 ret = do_adjtimex(&txc);
994
995 if (put_user(txc.modes, &utp->modes) ||
996 __put_user(txc.offset, &utp->offset) ||
997 __put_user(txc.freq, &utp->freq) ||
998 __put_user(txc.maxerror, &utp->maxerror) ||
999 __put_user(txc.esterror, &utp->esterror) ||
1000 __put_user(txc.status, &utp->status) ||
1001 __put_user(txc.constant, &utp->constant) ||
1002 __put_user(txc.precision, &utp->precision) ||
1003 __put_user(txc.tolerance, &utp->tolerance) ||
1004 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1005 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1006 __put_user(txc.tick, &utp->tick) ||
1007 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1008 __put_user(txc.jitter, &utp->jitter) ||
1009 __put_user(txc.shift, &utp->shift) ||
1010 __put_user(txc.stabil, &utp->stabil) ||
1011 __put_user(txc.jitcnt, &utp->jitcnt) ||
1012 __put_user(txc.calcnt, &utp->calcnt) ||
1013 __put_user(txc.errcnt, &utp->errcnt) ||
1014 __put_user(txc.stbcnt, &utp->stbcnt))
1015 ret = -EFAULT;
1016
1017 return ret;
1018}
1019
1020/* This is just a version for 32-bit applications which does
1021 * not force O_LARGEFILE on.
1022 */
1023
1024asmlinkage long sparc32_open(const char __user *filename,
1025 int flags, int mode)
1026{
5590ff0d 1027 return do_sys_open(AT_FDCWD, filename, flags, mode);
1da177e4
LT		 1028}
1029
1030extern 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
1034asmlinkage 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);
1075out_sem:
1076 up_write(&current->mm->mmap_sem);
1077out:
1078 return ret;
1079}
1080
1081struct __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
1091asmlinkage 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
1138long 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}
Linux kernel - Deliverables
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