?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[CONNECTOR]: Use netlink_has_listeners() to avoind unnecessary allocations.
[linux-2.6/verdex.git] / arch / sparc64 / kernel / sys_sparc32.c
blob0e41df024489d3b981f726193a3ebbf50a807868
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/capability.h>
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 #include <asm/a.out.h>
66
67 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
68 {
69 return sys_chown(filename, low2highuid(user), low2highgid(group));
70 }
71
72 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
73 {
74 return sys_lchown(filename, low2highuid(user), low2highgid(group));
75 }
76
77 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
78 {
79 return sys_fchown(fd, low2highuid(user), low2highgid(group));
80 }
81
82 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
83 {
84 return sys_setregid(low2highgid(rgid), low2highgid(egid));
85 }
86
87 asmlinkage long sys32_setgid16(u16 gid)
88 {
89 return sys_setgid((gid_t)gid);
90 }
91
92 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
93 {
94 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
95 }
96
97 asmlinkage long sys32_setuid16(u16 uid)
98 {
99 return sys_setuid((uid_t)uid);
100 }
101
102 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
103 {
104 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
105 low2highuid(suid));
106 }
107
108 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
109 {
110 int retval;
111
112 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
113 !(retval = put_user(high2lowuid(current->euid), euid)))
114 retval = put_user(high2lowuid(current->suid), suid);
115
116 return retval;
117 }
118
119 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
120 {
121 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
122 low2highgid(sgid));
123 }
124
125 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
126 {
127 int retval;
128
129 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
130 !(retval = put_user(high2lowgid(current->egid), egid)))
131 retval = put_user(high2lowgid(current->sgid), sgid);
132
133 return retval;
134 }
135
136 asmlinkage long sys32_setfsuid16(u16 uid)
137 {
138 return sys_setfsuid((uid_t)uid);
139 }
140
141 asmlinkage long sys32_setfsgid16(u16 gid)
142 {
143 return sys_setfsgid((gid_t)gid);
144 }
145
146 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
147 {
148 int i;
149 u16 group;
150
151 for (i = 0; i < group_info->ngroups; i++) {
152 group = (u16)GROUP_AT(group_info, i);
153 if (put_user(group, grouplist+i))
154 return -EFAULT;
155 }
156
157 return 0;
158 }
159
160 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
161 {
162 int i;
163 u16 group;
164
165 for (i = 0; i < group_info->ngroups; i++) {
166 if (get_user(group, grouplist+i))
167 return -EFAULT;
168 GROUP_AT(group_info, i) = (gid_t)group;
169 }
170
171 return 0;
172 }
173
174 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
175 {
176 int i;
177
178 if (gidsetsize < 0)
179 return -EINVAL;
180
181 get_group_info(current->group_info);
182 i = current->group_info->ngroups;
183 if (gidsetsize) {
184 if (i > gidsetsize) {
185 i = -EINVAL;
186 goto out;
187 }
188 if (groups16_to_user(grouplist, current->group_info)) {
189 i = -EFAULT;
190 goto out;
191 }
192 }
193 out:
194 put_group_info(current->group_info);
195 return i;
196 }
197
198 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
199 {
200 struct group_info *group_info;
201 int retval;
202
203 if (!capable(CAP_SETGID))
204 return -EPERM;
205 if ((unsigned)gidsetsize > NGROUPS_MAX)
206 return -EINVAL;
207
208 group_info = groups_alloc(gidsetsize);
209 if (!group_info)
210 return -ENOMEM;
211 retval = groups16_from_user(group_info, grouplist);
212 if (retval) {
213 put_group_info(group_info);
214 return retval;
215 }
216
217 retval = set_current_groups(group_info);
218 put_group_info(group_info);
219
220 return retval;
221 }
222
223 asmlinkage long sys32_getuid16(void)
224 {
225 return high2lowuid(current->uid);
226 }
227
228 asmlinkage long sys32_geteuid16(void)
229 {
230 return high2lowuid(current->euid);
231 }
232
233 asmlinkage long sys32_getgid16(void)
234 {
235 return high2lowgid(current->gid);
236 }
237
238 asmlinkage long sys32_getegid16(void)
239 {
240 return high2lowgid(current->egid);
241 }
242
243 /* 32-bit timeval and related flotsam. */
244
245 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
246 {
247 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
248 (__get_user(o->tv_sec, &i->tv_sec) |
249 __get_user(o->tv_usec, &i->tv_usec)));
250 }
251
252 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
253 {
254 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
255 (__put_user(i->tv_sec, &o->tv_sec) |
256 __put_user(i->tv_usec, &o->tv_usec)));
257 }
258
259 #ifdef CONFIG_SYSVIPC
260 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
261 {
262 int version;
263
264 version = call >> 16; /* hack for backward compatibility */
265 call &= 0xffff;
266
267 switch (call) {
268 case SEMTIMEDOP:
269 if (fifth)
270 /* sign extend semid */
271 return compat_sys_semtimedop((int)first,
272 compat_ptr(ptr), second,
273 compat_ptr(fifth));
274 /* else fall through for normal semop() */
275 case SEMOP:
276 /* struct sembuf is the same on 32 and 64bit :)) */
277 /* sign extend semid */
278 return sys_semtimedop((int)first, compat_ptr(ptr), second,
279 NULL);
280 case SEMGET:
281 /* sign extend key, nsems */
282 return sys_semget((int)first, (int)second, third);
283 case SEMCTL:
284 /* sign extend semid, semnum */
285 return compat_sys_semctl((int)first, (int)second, third,
286 compat_ptr(ptr));
287
288 case MSGSND:
289 /* sign extend msqid */
290 return compat_sys_msgsnd((int)first, (int)second, third,
291 compat_ptr(ptr));
292 case MSGRCV:
293 /* sign extend msqid, msgtyp */
294 return compat_sys_msgrcv((int)first, second, (int)fifth,
295 third, version, compat_ptr(ptr));
296 case MSGGET:
297 /* sign extend key */
298 return sys_msgget((int)first, second);
299 case MSGCTL:
300 /* sign extend msqid */
301 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
302
303 case SHMAT:
304 /* sign extend shmid */
305 return compat_sys_shmat((int)first, second, third, version,
306 compat_ptr(ptr));
307 case SHMDT:
308 return sys_shmdt(compat_ptr(ptr));
309 case SHMGET:
310 /* sign extend key_t */
311 return sys_shmget((int)first, second, third);
312 case SHMCTL:
313 /* sign extend shmid */
314 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
315
316 default:
317 return -ENOSYS;
318 };
319
320 return -ENOSYS;
321 }
322 #endif
323
324 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
325 {
326 if ((int)high < 0)
327 return -EINVAL;
328 else
329 return sys_truncate(path, (high << 32) | low);
330 }
331
332 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
333 {
334 if ((int)high < 0)
335 return -EINVAL;
336 else
337 return sys_ftruncate(fd, (high << 32) | low);
338 }
339
340 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
341 {
342 int err;
343
344 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
345 !old_valid_dev(stat->rdev))
346 return -EOVERFLOW;
347
348 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
349 err |= put_user(stat->ino, &statbuf->st_ino);
350 err |= put_user(stat->mode, &statbuf->st_mode);
351 err |= put_user(stat->nlink, &statbuf->st_nlink);
352 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
353 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
354 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
355 err |= put_user(stat->size, &statbuf->st_size);
356 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
357 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
358 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
359 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
360 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
361 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
362 err |= put_user(stat->blksize, &statbuf->st_blksize);
363 err |= put_user(stat->blocks, &statbuf->st_blocks);
364 err |= put_user(0, &statbuf->__unused4[0]);
365 err |= put_user(0, &statbuf->__unused4[1]);
366
367 return err;
368 }
369
370 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
371 {
372 int err;
373
374 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
375 err |= put_user(stat->ino, &statbuf->st_ino);
376 err |= put_user(stat->mode, &statbuf->st_mode);
377 err |= put_user(stat->nlink, &statbuf->st_nlink);
378 err |= put_user(stat->uid, &statbuf->st_uid);
379 err |= put_user(stat->gid, &statbuf->st_gid);
380 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
381 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
382 err |= put_user(stat->size, &statbuf->st_size);
383 err |= put_user(stat->blksize, &statbuf->st_blksize);
384 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
385 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
386 err |= put_user(stat->blocks, &statbuf->st_blocks);
387 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
388 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
389 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
390 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
391 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
392 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
393 err |= put_user(0, &statbuf->__unused4);
394 err |= put_user(0, &statbuf->__unused5);
395
396 return err;
397 }
398
399 asmlinkage long compat_sys_stat64(char __user * filename,
400 struct compat_stat64 __user *statbuf)
401 {
402 struct kstat stat;
403 int error = vfs_stat(filename, &stat);
404
405 if (!error)
406 error = cp_compat_stat64(&stat, statbuf);
407 return error;
408 }
409
410 asmlinkage long compat_sys_lstat64(char __user * filename,
411 struct compat_stat64 __user *statbuf)
412 {
413 struct kstat stat;
414 int error = vfs_lstat(filename, &stat);
415
416 if (!error)
417 error = cp_compat_stat64(&stat, statbuf);
418 return error;
419 }
420
421 asmlinkage long compat_sys_fstat64(unsigned int fd,
422 struct compat_stat64 __user * statbuf)
423 {
424 struct kstat stat;
425 int error = vfs_fstat(fd, &stat);
426
427 if (!error)
428 error = cp_compat_stat64(&stat, statbuf);
429 return error;
430 }
431
432 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
433 struct compat_stat64 __user * statbuf, int flag)
434 {
435 struct kstat stat;
436 int error = -EINVAL;
437
438 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
439 goto out;
440
441 if (flag & AT_SYMLINK_NOFOLLOW)
442 error = vfs_lstat_fd(dfd, filename, &stat);
443 else
444 error = vfs_stat_fd(dfd, filename, &stat);
445
446 if (!error)
447 error = cp_compat_stat64(&stat, statbuf);
448
449 out:
450 return error;
451 }
452
453 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
454 {
455 return sys_sysfs(option, arg1, arg2);
456 }
457
458 struct sysinfo32 {
459 s32 uptime;
460 u32 loads[3];
461 u32 totalram;
462 u32 freeram;
463 u32 sharedram;
464 u32 bufferram;
465 u32 totalswap;
466 u32 freeswap;
467 unsigned short procs;
468 unsigned short pad;
469 u32 totalhigh;
470 u32 freehigh;
471 u32 mem_unit;
472 char _f[20-2*sizeof(int)-sizeof(int)];
473 };
474
475 asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
476 {
477 struct sysinfo s;
478 int ret, err;
479 int bitcount = 0;
480 mm_segment_t old_fs = get_fs ();
481
482 set_fs(KERNEL_DS);
483 ret = sys_sysinfo((struct sysinfo __user *) &s);
484 set_fs(old_fs);
485 /* Check to see if any memory value is too large for 32-bit and
486 * scale down if needed.
487 */
488 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
489 while (s.mem_unit < PAGE_SIZE) {
490 s.mem_unit <<= 1;
491 bitcount++;
492 }
493 s.totalram >>= bitcount;
494 s.freeram >>= bitcount;
495 s.sharedram >>= bitcount;
496 s.bufferram >>= bitcount;
497 s.totalswap >>= bitcount;
498 s.freeswap >>= bitcount;
499 s.totalhigh >>= bitcount;
500 s.freehigh >>= bitcount;
501 }
502
503 err = put_user (s.uptime, &info->uptime);
504 err |= __put_user (s.loads[0], &info->loads[0]);
505 err |= __put_user (s.loads[1], &info->loads[1]);
506 err |= __put_user (s.loads[2], &info->loads[2]);
507 err |= __put_user (s.totalram, &info->totalram);
508 err |= __put_user (s.freeram, &info->freeram);
509 err |= __put_user (s.sharedram, &info->sharedram);
510 err |= __put_user (s.bufferram, &info->bufferram);
511 err |= __put_user (s.totalswap, &info->totalswap);
512 err |= __put_user (s.freeswap, &info->freeswap);
513 err |= __put_user (s.procs, &info->procs);
514 err |= __put_user (s.totalhigh, &info->totalhigh);
515 err |= __put_user (s.freehigh, &info->freehigh);
516 err |= __put_user (s.mem_unit, &info->mem_unit);
517 if (err)
518 return -EFAULT;
519 return ret;
520 }
521
522 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
523 {
524 struct timespec t;
525 int ret;
526 mm_segment_t old_fs = get_fs ();
527
528 set_fs (KERNEL_DS);
529 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
530 set_fs (old_fs);
531 if (put_compat_timespec(&t, interval))
532 return -EFAULT;
533 return ret;
534 }
535
536 asmlinkage long compat_sys_rt_sigprocmask(int how,
537 compat_sigset_t __user *set,
538 compat_sigset_t __user *oset,
539 compat_size_t sigsetsize)
540 {
541 sigset_t s;
542 compat_sigset_t s32;
543 int ret;
544 mm_segment_t old_fs = get_fs();
545
546 if (set) {
547 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
548 return -EFAULT;
549 switch (_NSIG_WORDS) {
550 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
551 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
552 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
553 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
554 }
555 }
556 set_fs (KERNEL_DS);
557 ret = sys_rt_sigprocmask(how,
558 set ? (sigset_t __user *) &s : NULL,
559 oset ? (sigset_t __user *) &s : NULL,
560 sigsetsize);
561 set_fs (old_fs);
562 if (ret) return ret;
563 if (oset) {
564 switch (_NSIG_WORDS) {
565 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
566 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
567 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
568 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
569 }
570 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
571 return -EFAULT;
572 }
573 return 0;
574 }
575
576 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
577 compat_size_t sigsetsize)
578 {
579 sigset_t s;
580 compat_sigset_t s32;
581 int ret;
582 mm_segment_t old_fs = get_fs();
583
584 set_fs (KERNEL_DS);
585 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
586 set_fs (old_fs);
587 if (!ret) {
588 switch (_NSIG_WORDS) {
589 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
590 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
591 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
592 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
593 }
594 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
595 return -EFAULT;
596 }
597 return ret;
598 }
599
600 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
601 struct compat_siginfo __user *uinfo)
602 {
603 siginfo_t info;
604 int ret;
605 mm_segment_t old_fs = get_fs();
606
607 if (copy_siginfo_from_user32(&info, uinfo))
608 return -EFAULT;
609
610 set_fs (KERNEL_DS);
611 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
612 set_fs (old_fs);
613 return ret;
614 }
615
616 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
617 struct old_sigaction32 __user *oact)
618 {
619 struct k_sigaction new_ka, old_ka;
620 int ret;
621
622 if (sig < 0) {
623 set_thread_flag(TIF_NEWSIGNALS);
624 sig = -sig;
625 }
626
627 if (act) {
628 compat_old_sigset_t mask;
629 u32 u_handler, u_restorer;
630
631 ret = get_user(u_handler, &act->sa_handler);
632 new_ka.sa.sa_handler = compat_ptr(u_handler);
633 ret |= __get_user(u_restorer, &act->sa_restorer);
634 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
635 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
636 ret |= __get_user(mask, &act->sa_mask);
637 if (ret)
638 return ret;
639 new_ka.ka_restorer = NULL;
640 siginitset(&new_ka.sa.sa_mask, mask);
641 }
642
643 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
644
645 if (!ret && oact) {
646 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
647 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
648 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
649 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
650 }
651
652 return ret;
653 }
654
655 asmlinkage long compat_sys_rt_sigaction(int sig,
656 struct sigaction32 __user *act,
657 struct sigaction32 __user *oact,
658 void __user *restorer,
659 compat_size_t sigsetsize)
660 {
661 struct k_sigaction new_ka, old_ka;
662 int ret;
663 compat_sigset_t set32;
664
665 /* XXX: Don't preclude handling different sized sigset_t's. */
666 if (sigsetsize != sizeof(compat_sigset_t))
667 return -EINVAL;
668
669 /* All tasks which use RT signals (effectively) use
670 * new style signals.
671 */
672 set_thread_flag(TIF_NEWSIGNALS);
673
674 if (act) {
675 u32 u_handler, u_restorer;
676
677 new_ka.ka_restorer = restorer;
678 ret = get_user(u_handler, &act->sa_handler);
679 new_ka.sa.sa_handler = compat_ptr(u_handler);
680 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
681 switch (_NSIG_WORDS) {
682 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
683 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
684 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
685 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
686 }
687 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
688 ret |= __get_user(u_restorer, &act->sa_restorer);
689 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
690 if (ret)
691 return -EFAULT;
692 }
693
694 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
695
696 if (!ret && oact) {
697 switch (_NSIG_WORDS) {
698 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
699 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
700 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
701 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
702 }
703 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
704 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
705 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
706 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
707 if (ret)
708 ret = -EFAULT;
709 }
710
711 return ret;
712 }
713
714 /*
715 * sparc32_execve() executes a new program after the asm stub has set
716 * things up for us. This should basically do what I want it to.
717 */
718 asmlinkage long sparc32_execve(struct pt_regs *regs)
719 {
720 int error, base = 0;
721 char *filename;
722
723 /* User register window flush is done by entry.S */
724
725 /* Check for indirect call. */
726 if ((u32)regs->u_regs[UREG_G1] == 0)
727 base = 1;
728
729 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
730 error = PTR_ERR(filename);
731 if (IS_ERR(filename))
732 goto out;
733
734 error = compat_do_execve(filename,
735 compat_ptr(regs->u_regs[base + UREG_I1]),
736 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
737
738 putname(filename);
739
740 if (!error) {
741 fprs_write(0);
742 current_thread_info()->xfsr[0] = 0;
743 current_thread_info()->fpsaved[0] = 0;
744 regs->tstate &= ~TSTATE_PEF;
745 task_lock(current);
746 current->ptrace &= ~PT_DTRACE;
747 task_unlock(current);
748 }
749 out:
750 return error;
751 }
752
753 #ifdef CONFIG_MODULES
754
755 asmlinkage long sys32_init_module(void __user *umod, u32 len,
756 const char __user *uargs)
757 {
758 return sys_init_module(umod, len, uargs);
759 }
760
761 asmlinkage long sys32_delete_module(const char __user *name_user,
762 unsigned int flags)
763 {
764 return sys_delete_module(name_user, flags);
765 }
766
767 #else /* CONFIG_MODULES */
768
769 asmlinkage long sys32_init_module(const char __user *name_user,
770 struct module __user *mod_user)
771 {
772 return -ENOSYS;
773 }
774
775 asmlinkage long sys32_delete_module(const char __user *name_user)
776 {
777 return -ENOSYS;
778 }
779
780 #endif /* CONFIG_MODULES */
781
782 /* Translations due to time_t size differences. Which affects all
783 sorts of things, like timeval and itimerval. */
784
785 extern struct timezone sys_tz;
786
787 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
788 struct timezone __user *tz)
789 {
790 if (tv) {
791 struct timeval ktv;
792 do_gettimeofday(&ktv);
793 if (put_tv32(tv, &ktv))
794 return -EFAULT;
795 }
796 if (tz) {
797 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
798 return -EFAULT;
799 }
800 return 0;
801 }
802
803 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
804 {
805 long usec;
806
807 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
808 return -EFAULT;
809 if (__get_user(o->tv_sec, &i->tv_sec))
810 return -EFAULT;
811 if (__get_user(usec, &i->tv_usec))
812 return -EFAULT;
813 o->tv_nsec = usec * 1000;
814 return 0;
815 }
816
817 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
818 struct timezone __user *tz)
819 {
820 struct timespec kts;
821 struct timezone ktz;
822
823 if (tv) {
824 if (get_ts32(&kts, tv))
825 return -EFAULT;
826 }
827 if (tz) {
828 if (copy_from_user(&ktz, tz, sizeof(ktz)))
829 return -EFAULT;
830 }
831
832 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
833 }
834
835 asmlinkage long sys32_utimes(char __user *filename,
836 struct compat_timeval __user *tvs)
837 {
838 struct timeval ktvs[2];
839
840 if (tvs) {
841 if (get_tv32(&ktvs[0], tvs) ||
842 get_tv32(&ktvs[1], 1+tvs))
843 return -EFAULT;
844 }
845
846 return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL));
847 }
848
849 /* These are here just in case some old sparc32 binary calls it. */
850 asmlinkage long sys32_pause(void)
851 {
852 current->state = TASK_INTERRUPTIBLE;
853 schedule();
854 return -ERESTARTNOHAND;
855 }
856
857 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
858 char __user *ubuf,
859 compat_size_t count,
860 unsigned long poshi,
861 unsigned long poslo)
862 {
863 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
864 }
865
866 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
867 char __user *ubuf,
868 compat_size_t count,
869 unsigned long poshi,
870 unsigned long poslo)
871 {
872 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
873 }
874
875 asmlinkage long compat_sys_readahead(int fd,
876 unsigned long offhi,
877 unsigned long offlo,
878 compat_size_t count)
879 {
880 return sys_readahead(fd, (offhi << 32) | offlo, count);
881 }
882
883 long compat_sys_fadvise64(int fd,
884 unsigned long offhi,
885 unsigned long offlo,
886 compat_size_t len, int advice)
887 {
888 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
889 }
890
891 long compat_sys_fadvise64_64(int fd,
892 unsigned long offhi, unsigned long offlo,
893 unsigned long lenhi, unsigned long lenlo,
894 int advice)
895 {
896 return sys_fadvise64_64(fd,
897 (offhi << 32) | offlo,
898 (lenhi << 32) | lenlo,
899 advice);
900 }
901
902 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
903 compat_off_t __user *offset,
904 compat_size_t count)
905 {
906 mm_segment_t old_fs = get_fs();
907 int ret;
908 off_t of;
909
910 if (offset && get_user(of, offset))
911 return -EFAULT;
912
913 set_fs(KERNEL_DS);
914 ret = sys_sendfile(out_fd, in_fd,
915 offset ? (off_t __user *) &of : NULL,
916 count);
917 set_fs(old_fs);
918
919 if (offset && put_user(of, offset))
920 return -EFAULT;
921
922 return ret;
923 }
924
925 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
926 compat_loff_t __user *offset,
927 compat_size_t count)
928 {
929 mm_segment_t old_fs = get_fs();
930 int ret;
931 loff_t lof;
932
933 if (offset && get_user(lof, offset))
934 return -EFAULT;
935
936 set_fs(KERNEL_DS);
937 ret = sys_sendfile64(out_fd, in_fd,
938 offset ? (loff_t __user *) &lof : NULL,
939 count);
940 set_fs(old_fs);
941
942 if (offset && put_user(lof, offset))
943 return -EFAULT;
944
945 return ret;
946 }
947
948 /* Handle adjtimex compatibility. */
949
950 struct timex32 {
951 u32 modes;
952 s32 offset, freq, maxerror, esterror;
953 s32 status, constant, precision, tolerance;
954 struct compat_timeval time;
955 s32 tick;
956 s32 ppsfreq, jitter, shift, stabil;
957 s32 jitcnt, calcnt, errcnt, stbcnt;
958 s32 :32; s32 :32; s32 :32; s32 :32;
959 s32 :32; s32 :32; s32 :32; s32 :32;
960 s32 :32; s32 :32; s32 :32; s32 :32;
961 };
962
963 extern int do_adjtimex(struct timex *);
964
965 asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
966 {
967 struct timex txc;
968 int ret;
969
970 memset(&txc, 0, sizeof(struct timex));
971
972 if (get_user(txc.modes, &utp->modes) ||
973 __get_user(txc.offset, &utp->offset) ||
974 __get_user(txc.freq, &utp->freq) ||
975 __get_user(txc.maxerror, &utp->maxerror) ||
976 __get_user(txc.esterror, &utp->esterror) ||
977 __get_user(txc.status, &utp->status) ||
978 __get_user(txc.constant, &utp->constant) ||
979 __get_user(txc.precision, &utp->precision) ||
980 __get_user(txc.tolerance, &utp->tolerance) ||
981 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
982 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
983 __get_user(txc.tick, &utp->tick) ||
984 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
985 __get_user(txc.jitter, &utp->jitter) ||
986 __get_user(txc.shift, &utp->shift) ||
987 __get_user(txc.stabil, &utp->stabil) ||
988 __get_user(txc.jitcnt, &utp->jitcnt) ||
989 __get_user(txc.calcnt, &utp->calcnt) ||
990 __get_user(txc.errcnt, &utp->errcnt) ||
991 __get_user(txc.stbcnt, &utp->stbcnt))
992 return -EFAULT;
993
994 ret = do_adjtimex(&txc);
995
996 if (put_user(txc.modes, &utp->modes) ||
997 __put_user(txc.offset, &utp->offset) ||
998 __put_user(txc.freq, &utp->freq) ||
999 __put_user(txc.maxerror, &utp->maxerror) ||
1000 __put_user(txc.esterror, &utp->esterror) ||
1001 __put_user(txc.status, &utp->status) ||
1002 __put_user(txc.constant, &utp->constant) ||
1003 __put_user(txc.precision, &utp->precision) ||
1004 __put_user(txc.tolerance, &utp->tolerance) ||
1005 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1006 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1007 __put_user(txc.tick, &utp->tick) ||
1008 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1009 __put_user(txc.jitter, &utp->jitter) ||
1010 __put_user(txc.shift, &utp->shift) ||
1011 __put_user(txc.stabil, &utp->stabil) ||
1012 __put_user(txc.jitcnt, &utp->jitcnt) ||
1013 __put_user(txc.calcnt, &utp->calcnt) ||
1014 __put_user(txc.errcnt, &utp->errcnt) ||
1015 __put_user(txc.stbcnt, &utp->stbcnt))
1016 ret = -EFAULT;
1017
1018 return ret;
1019 }
1020
1021 /* This is just a version for 32-bit applications which does
1022 * not force O_LARGEFILE on.
1023 */
1024
1025 asmlinkage long sparc32_open(const char __user *filename,
1026 int flags, int mode)
1027 {
1028 return do_sys_open(AT_FDCWD, filename, flags, mode);
1029 }
1030
1031 extern unsigned long do_mremap(unsigned long addr,
1032 unsigned long old_len, unsigned long new_len,
1033 unsigned long flags, unsigned long new_addr);
1034
1035 asmlinkage unsigned long sys32_mremap(unsigned long addr,
1036 unsigned long old_len, unsigned long new_len,
1037 unsigned long flags, u32 __new_addr)
1038 {
1039 struct vm_area_struct *vma;
1040 unsigned long ret = -EINVAL;
1041 unsigned long new_addr = __new_addr;
1042
1043 if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
1044 goto out;
1045 if (addr > STACK_TOP32 - old_len)
1046 goto out;
1047 down_write(&current->mm->mmap_sem);
1048 if (flags & MREMAP_FIXED) {
1049 if (new_addr > STACK_TOP32 - new_len)
1050 goto out_sem;
1051 } else if (addr > STACK_TOP32 - new_len) {
1052 unsigned long map_flags = 0;
1053 struct file *file = NULL;
1054
1055 ret = -ENOMEM;
1056 if (!(flags & MREMAP_MAYMOVE))
1057 goto out_sem;
1058
1059 vma = find_vma(current->mm, addr);
1060 if (vma) {
1061 if (vma->vm_flags & VM_SHARED)
1062 map_flags |= MAP_SHARED;
1063 file = vma->vm_file;
1064 }
1065
1066 /* MREMAP_FIXED checked above. */
1067 new_addr = get_unmapped_area(file, addr, new_len,
1068 vma ? vma->vm_pgoff : 0,
1069 map_flags);
1070 ret = new_addr;
1071 if (new_addr & ~PAGE_MASK)
1072 goto out_sem;
1073 flags |= MREMAP_FIXED;
1074 }
1075 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
1076 out_sem:
1077 up_write(&current->mm->mmap_sem);
1078 out:
1079 return ret;
1080 }
1081
1082 struct __sysctl_args32 {
1083 u32 name;
1084 int nlen;
1085 u32 oldval;
1086 u32 oldlenp;
1087 u32 newval;
1088 u32 newlen;
1089 u32 __unused[4];
1090 };
1091
1092 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1093 {
1094 #ifndef CONFIG_SYSCTL
1095 return -ENOSYS;
1096 #else
1097 struct __sysctl_args32 tmp;
1098 int error;
1099 size_t oldlen, __user *oldlenp = NULL;
1100 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
1101
1102 if (copy_from_user(&tmp, args, sizeof(tmp)))
1103 return -EFAULT;
1104
1105 if (tmp.oldval && tmp.oldlenp) {
1106 /* Duh, this is ugly and might not work if sysctl_args
1107 is in read-only memory, but do_sysctl does indirectly
1108 a lot of uaccess in both directions and we'd have to
1109 basically copy the whole sysctl.c here, and
1110 glibc's __sysctl uses rw memory for the structure
1111 anyway. */
1112 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
1113 put_user(oldlen, (size_t __user *)addr))
1114 return -EFAULT;
1115 oldlenp = (size_t __user *)addr;
1116 }
1117
1118 lock_kernel();
1119 error = do_sysctl((int __user *)(unsigned long) tmp.name,
1120 tmp.nlen,
1121 (void __user *)(unsigned long) tmp.oldval,
1122 oldlenp,
1123 (void __user *)(unsigned long) tmp.newval,
1124 tmp.newlen);
1125 unlock_kernel();
1126 if (oldlenp) {
1127 if (!error) {
1128 if (get_user(oldlen, (size_t __user *)addr) ||
1129 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1130 error = -EFAULT;
1131 }
1132 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1133 error = -EFAULT;
1134 }
1135 return error;
1136 #endif
1137 }
1138
1139 long sys32_lookup_dcookie(unsigned long cookie_high,
1140 unsigned long cookie_low,
1141 char __user *buf, size_t len)
1142 {
1143 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1144 buf, len);
1145 }
Verdex Pro support