blob: e00e5f6e7fdd784d2d067dc4e6ccffcdc2eea009 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Conversion between 32-bit and 64-bit native system calls.
3 *
4 * Copyright (C) 2000 Silicon Graphics, Inc.
5 * Written by Ulf Carlsson (ulfc@engr.sgi.com)
6 * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com)
7 */
8#include <linux/config.h>
9#include <linux/compiler.h>
10#include <linux/mm.h>
11#include <linux/errno.h>
12#include <linux/file.h>
13#include <linux/smp_lock.h>
14#include <linux/highuid.h>
15#include <linux/dirent.h>
16#include <linux/resource.h>
17#include <linux/highmem.h>
18#include <linux/time.h>
19#include <linux/times.h>
20#include <linux/poll.h>
21#include <linux/slab.h>
22#include <linux/skbuff.h>
23#include <linux/filter.h>
24#include <linux/shm.h>
25#include <linux/sem.h>
26#include <linux/msg.h>
27#include <linux/icmpv6.h>
28#include <linux/syscalls.h>
29#include <linux/sysctl.h>
30#include <linux/utime.h>
31#include <linux/utsname.h>
32#include <linux/personality.h>
33#include <linux/timex.h>
34#include <linux/dnotify.h>
35#include <linux/module.h>
36#include <linux/binfmts.h>
37#include <linux/security.h>
38#include <linux/compat.h>
39#include <linux/vfs.h>
40
41#include <net/sock.h>
42#include <net/scm.h>
43
44#include <asm/ipc.h>
45#include <asm/sim.h>
46#include <asm/uaccess.h>
47#include <asm/mmu_context.h>
48#include <asm/mman.h>
49
50/* Use this to get at 32-bit user passed pointers. */
51/* A() macro should be used for places where you e.g.
52 have some internal variable u32 and just want to get
53 rid of a compiler warning. AA() has to be used in
54 places where you want to convert a function argument
55 to 32bit pointer or when you e.g. access pt_regs
56 structure and want to consider 32bit registers only.
57 */
58#define A(__x) ((unsigned long)(__x))
59#define AA(__x) ((unsigned long)((int)__x))
60
61#ifdef __MIPSEB__
62#define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
63#endif
64#ifdef __MIPSEL__
65#define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
66#endif
67
68/*
69 * Revalidate the inode. This is required for proper NFS attribute caching.
70 */
71
72int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
73{
74 struct compat_stat tmp;
75
76 if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
77 return -EOVERFLOW;
78
79 memset(&tmp, 0, sizeof(tmp));
80 tmp.st_dev = new_encode_dev(stat->dev);
81 tmp.st_ino = stat->ino;
82 tmp.st_mode = stat->mode;
83 tmp.st_nlink = stat->nlink;
84 SET_UID(tmp.st_uid, stat->uid);
85 SET_GID(tmp.st_gid, stat->gid);
86 tmp.st_rdev = new_encode_dev(stat->rdev);
87 tmp.st_size = stat->size;
88 tmp.st_atime = stat->atime.tv_sec;
89 tmp.st_mtime = stat->mtime.tv_sec;
90 tmp.st_ctime = stat->ctime.tv_sec;
91#ifdef STAT_HAVE_NSEC
92 tmp.st_atime_nsec = stat->atime.tv_nsec;
93 tmp.st_mtime_nsec = stat->mtime.tv_nsec;
94 tmp.st_ctime_nsec = stat->ctime.tv_nsec;
95#endif
96 tmp.st_blocks = stat->blocks;
97 tmp.st_blksize = stat->blksize;
98 return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
99}
100
101asmlinkage unsigned long
102sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
103 unsigned long flags, unsigned long fd, unsigned long pgoff)
104{
105 struct file * file = NULL;
106 unsigned long error;
107
108 error = -EINVAL;
109 if (!(flags & MAP_ANONYMOUS)) {
110 error = -EBADF;
111 file = fget(fd);
112 if (!file)
113 goto out;
114 }
115 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
116
117 down_write(&current->mm->mmap_sem);
118 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
119 up_write(&current->mm->mmap_sem);
120 if (file)
121 fput(file);
122
123out:
124 return error;
125}
126
127
128asmlinkage int sys_truncate64(const char *path, unsigned int high,
129 unsigned int low)
130{
131 if ((int)high < 0)
132 return -EINVAL;
133 return sys_truncate(path, ((long) high << 32) | low);
134}
135
136asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
137 unsigned int low)
138{
139 if ((int)high < 0)
140 return -EINVAL;
141 return sys_ftruncate(fd, ((long) high << 32) | low);
142}
143
144/*
145 * sys_execve() executes a new program.
146 */
147asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
148{
149 int error;
150 char * filename;
151
152 filename = getname(compat_ptr(regs.regs[4]));
153 error = PTR_ERR(filename);
154 if (IS_ERR(filename))
155 goto out;
156 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
157 compat_ptr(regs.regs[6]), &regs);
158 putname(filename);
159
160out:
161 return error;
162}
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164asmlinkage int
165sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
166{
Ralf Baechleb6e203d2005-02-16 21:18:52 +0000167 return compat_sys_wait4(pid, stat_addr, options, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168}
169
Ralf Baechle54f2da72005-02-16 21:21:29 +0000170asmlinkage long
171sysn32_waitid(int which, compat_pid_t pid,
172 siginfo_t __user *uinfo, int options,
173 struct compat_rusage __user *uru)
174{
175 struct rusage ru;
176 long ret;
177 mm_segment_t old_fs = get_fs();
178
Ralf Baechlef3468e02006-02-19 03:42:11 +0000179 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
180 return -EFAULT;
181
Ralf Baechle54f2da72005-02-16 21:21:29 +0000182 set_fs (KERNEL_DS);
183 ret = sys_waitid(which, pid, uinfo, options,
184 uru ? (struct rusage __user *) &ru : NULL);
185 set_fs (old_fs);
186
187 if (ret < 0 || uinfo->si_signo == 0)
188 return ret;
189
190 if (uru)
191 ret = put_compat_rusage(&ru, uru);
192 return ret;
193}
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195struct sysinfo32 {
196 s32 uptime;
197 u32 loads[3];
198 u32 totalram;
199 u32 freeram;
200 u32 sharedram;
201 u32 bufferram;
202 u32 totalswap;
203 u32 freeswap;
204 u16 procs;
205 u32 totalhigh;
206 u32 freehigh;
207 u32 mem_unit;
208 char _f[8];
209};
210
211asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
212{
213 struct sysinfo s;
214 int ret, err;
215 mm_segment_t old_fs = get_fs ();
Ralf Baechle42a3b4f22005-09-03 15:56:17 -0700216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 set_fs (KERNEL_DS);
218 ret = sys_sysinfo(&s);
219 set_fs (old_fs);
220 err = put_user (s.uptime, &info->uptime);
221 err |= __put_user (s.loads[0], &info->loads[0]);
222 err |= __put_user (s.loads[1], &info->loads[1]);
223 err |= __put_user (s.loads[2], &info->loads[2]);
224 err |= __put_user (s.totalram, &info->totalram);
225 err |= __put_user (s.freeram, &info->freeram);
226 err |= __put_user (s.sharedram, &info->sharedram);
227 err |= __put_user (s.bufferram, &info->bufferram);
228 err |= __put_user (s.totalswap, &info->totalswap);
229 err |= __put_user (s.freeswap, &info->freeswap);
230 err |= __put_user (s.procs, &info->procs);
231 err |= __put_user (s.totalhigh, &info->totalhigh);
232 err |= __put_user (s.freehigh, &info->freehigh);
233 err |= __put_user (s.mem_unit, &info->mem_unit);
234 if (err)
235 return -EFAULT;
236 return ret;
237}
238
239#define RLIM_INFINITY32 0x7fffffff
240#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
241
242struct rlimit32 {
243 int rlim_cur;
244 int rlim_max;
245};
246
247#ifdef __MIPSEB__
248asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
249 int length_hi, int length_lo)
250#endif
251#ifdef __MIPSEL__
252asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
253 int length_lo, int length_hi)
254#endif
255{
256 loff_t length;
257
258 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
259
260 return sys_truncate(path, length);
261}
262
263#ifdef __MIPSEB__
264asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
265 int length_hi, int length_lo)
266#endif
267#ifdef __MIPSEL__
268asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
269 int length_lo, int length_hi)
270#endif
271{
272 loff_t length;
273
274 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
275
276 return sys_ftruncate(fd, length);
277}
278
279static inline long
280get_tv32(struct timeval *o, struct compat_timeval *i)
281{
282 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
283 (__get_user(o->tv_sec, &i->tv_sec) |
284 __get_user(o->tv_usec, &i->tv_usec)));
285}
286
287static inline long
288put_tv32(struct compat_timeval *o, struct timeval *i)
289{
290 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
291 (__put_user(i->tv_sec, &o->tv_sec) |
292 __put_user(i->tv_usec, &o->tv_usec)));
293}
294
295extern struct timezone sys_tz;
296
297asmlinkage int
298sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
299{
300 if (tv) {
301 struct timeval ktv;
302 do_gettimeofday(&ktv);
303 if (put_tv32(tv, &ktv))
304 return -EFAULT;
305 }
306 if (tz) {
307 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
308 return -EFAULT;
309 }
310 return 0;
311}
312
313static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
314{
315 long usec;
316
317 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
318 return -EFAULT;
319 if (__get_user(o->tv_sec, &i->tv_sec))
320 return -EFAULT;
321 if (__get_user(usec, &i->tv_usec))
322 return -EFAULT;
323 o->tv_nsec = usec * 1000;
324 return 0;
325}
326
327asmlinkage int
328sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
329{
330 struct timespec kts;
331 struct timezone ktz;
332
333 if (tv) {
334 if (get_ts32(&kts, tv))
335 return -EFAULT;
336 }
337 if (tz) {
338 if (copy_from_user(&ktz, tz, sizeof(ktz)))
339 return -EFAULT;
340 }
341
342 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
343}
344
345asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
346 unsigned int offset_low, loff_t * result,
347 unsigned int origin)
348{
349 return sys_llseek(fd, offset_high, offset_low, result, origin);
350}
351
352/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
353 lseek back to original location. They fail just like lseek does on
354 non-seekable files. */
355
356asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf,
357 size_t count, u32 unused, u64 a4, u64 a5)
358{
359 ssize_t ret;
360 struct file * file;
361 ssize_t (*read)(struct file *, char *, size_t, loff_t *);
362 loff_t pos;
363
364 ret = -EBADF;
365 file = fget(fd);
366 if (!file)
367 goto bad_file;
368 if (!(file->f_mode & FMODE_READ))
369 goto out;
370 pos = merge_64(a4, a5);
371 ret = rw_verify_area(READ, file, &pos, count);
Linus Torvaldse28cc712006-01-04 16:20:40 -0800372 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 goto out;
374 ret = -EINVAL;
375 if (!file->f_op || !(read = file->f_op->read))
376 goto out;
377 if (pos < 0)
378 goto out;
379 ret = -ESPIPE;
380 if (!(file->f_mode & FMODE_PREAD))
381 goto out;
382 ret = read(file, buf, count, &pos);
383 if (ret > 0)
384 dnotify_parent(file->f_dentry, DN_ACCESS);
385out:
386 fput(file);
387bad_file:
388 return ret;
389}
390
391asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf,
392 size_t count, u32 unused, u64 a4, u64 a5)
393{
394 ssize_t ret;
395 struct file * file;
396 ssize_t (*write)(struct file *, const char *, size_t, loff_t *);
397 loff_t pos;
398
399 ret = -EBADF;
400 file = fget(fd);
401 if (!file)
402 goto bad_file;
403 if (!(file->f_mode & FMODE_WRITE))
404 goto out;
405 pos = merge_64(a4, a5);
406 ret = rw_verify_area(WRITE, file, &pos, count);
Linus Torvaldse28cc712006-01-04 16:20:40 -0800407 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 goto out;
409 ret = -EINVAL;
410 if (!file->f_op || !(write = file->f_op->write))
411 goto out;
412 if (pos < 0)
413 goto out;
414
415 ret = -ESPIPE;
416 if (!(file->f_mode & FMODE_PWRITE))
417 goto out;
418
419 ret = write(file, buf, count, &pos);
420 if (ret > 0)
421 dnotify_parent(file->f_dentry, DN_MODIFY);
422out:
423 fput(file);
424bad_file:
425 return ret;
426}
427
428asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
429 struct compat_timespec *interval)
430{
431 struct timespec t;
432 int ret;
433 mm_segment_t old_fs = get_fs ();
434
435 set_fs (KERNEL_DS);
436 ret = sys_sched_rr_get_interval(pid, &t);
437 set_fs (old_fs);
438 if (put_user (t.tv_sec, &interval->tv_sec) ||
439 __put_user (t.tv_nsec, &interval->tv_nsec))
440 return -EFAULT;
441 return ret;
442}
443
444struct msgbuf32 { s32 mtype; char mtext[1]; };
445
446struct ipc_perm32
447{
448 key_t key;
Stephen Rothwell202e5972005-09-06 15:16:40 -0700449 __compat_uid_t uid;
450 __compat_gid_t gid;
451 __compat_uid_t cuid;
452 __compat_gid_t cgid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 compat_mode_t mode;
454 unsigned short seq;
455};
456
457struct ipc64_perm32 {
458 key_t key;
Stephen Rothwell202e5972005-09-06 15:16:40 -0700459 __compat_uid_t uid;
460 __compat_gid_t gid;
461 __compat_uid_t cuid;
462 __compat_gid_t cgid;
Ralf Baechle42a3b4f22005-09-03 15:56:17 -0700463 compat_mode_t mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 unsigned short seq;
465 unsigned short __pad1;
466 unsigned int __unused1;
467 unsigned int __unused2;
468};
469
470struct semid_ds32 {
471 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
472 compat_time_t sem_otime; /* last semop time */
473 compat_time_t sem_ctime; /* last change time */
474 u32 sem_base; /* ptr to first semaphore in array */
475 u32 sem_pending; /* pending operations to be processed */
476 u32 sem_pending_last; /* last pending operation */
477 u32 undo; /* undo requests on this array */
478 unsigned short sem_nsems; /* no. of semaphores in array */
479};
480
481struct semid64_ds32 {
482 struct ipc64_perm32 sem_perm;
483 compat_time_t sem_otime;
484 compat_time_t sem_ctime;
485 unsigned int sem_nsems;
486 unsigned int __unused1;
487 unsigned int __unused2;
488};
489
490struct msqid_ds32
491{
492 struct ipc_perm32 msg_perm;
493 u32 msg_first;
494 u32 msg_last;
495 compat_time_t msg_stime;
496 compat_time_t msg_rtime;
497 compat_time_t msg_ctime;
498 u32 wwait;
499 u32 rwait;
500 unsigned short msg_cbytes;
501 unsigned short msg_qnum;
502 unsigned short msg_qbytes;
503 compat_ipc_pid_t msg_lspid;
504 compat_ipc_pid_t msg_lrpid;
505};
506
507struct msqid64_ds32 {
508 struct ipc64_perm32 msg_perm;
509 compat_time_t msg_stime;
510 unsigned int __unused1;
511 compat_time_t msg_rtime;
512 unsigned int __unused2;
513 compat_time_t msg_ctime;
514 unsigned int __unused3;
515 unsigned int msg_cbytes;
516 unsigned int msg_qnum;
517 unsigned int msg_qbytes;
518 compat_pid_t msg_lspid;
519 compat_pid_t msg_lrpid;
520 unsigned int __unused4;
521 unsigned int __unused5;
522};
523
524struct shmid_ds32 {
525 struct ipc_perm32 shm_perm;
526 int shm_segsz;
527 compat_time_t shm_atime;
528 compat_time_t shm_dtime;
529 compat_time_t shm_ctime;
530 compat_ipc_pid_t shm_cpid;
531 compat_ipc_pid_t shm_lpid;
532 unsigned short shm_nattch;
533};
534
535struct shmid64_ds32 {
536 struct ipc64_perm32 shm_perm;
537 compat_size_t shm_segsz;
538 compat_time_t shm_atime;
539 compat_time_t shm_dtime;
540 compat_time_t shm_ctime;
541 compat_pid_t shm_cpid;
542 compat_pid_t shm_lpid;
543 unsigned int shm_nattch;
544 unsigned int __unused1;
545 unsigned int __unused2;
546};
547
548struct ipc_kludge32 {
549 u32 msgp;
550 s32 msgtyp;
551};
552
553static int
554do_sys32_semctl(int first, int second, int third, void *uptr)
555{
556 union semun fourth;
557 u32 pad;
558 int err, err2;
559 struct semid64_ds s;
560 mm_segment_t old_fs;
561
562 if (!uptr)
563 return -EINVAL;
564 err = -EFAULT;
565 if (get_user (pad, (u32 *)uptr))
566 return err;
567 if ((third & ~IPC_64) == SETVAL)
568 fourth.val = (int)pad;
569 else
570 fourth.__pad = (void *)A(pad);
571 switch (third & ~IPC_64) {
572 case IPC_INFO:
573 case IPC_RMID:
574 case IPC_SET:
575 case SEM_INFO:
576 case GETVAL:
577 case GETPID:
578 case GETNCNT:
579 case GETZCNT:
580 case GETALL:
581 case SETVAL:
582 case SETALL:
583 err = sys_semctl (first, second, third, fourth);
584 break;
585
586 case IPC_STAT:
587 case SEM_STAT:
588 fourth.__pad = &s;
589 old_fs = get_fs();
590 set_fs(KERNEL_DS);
591 err = sys_semctl(first, second, third | IPC_64, fourth);
592 set_fs(old_fs);
593
594 if (third & IPC_64) {
595 struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad);
596
597 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
598 err = -EFAULT;
599 break;
600 }
601 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
602 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
603 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
604 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
605 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
606 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
607 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
608 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
609 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
610 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
611 } else {
612 struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad);
613
614 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
615 err = -EFAULT;
616 break;
617 }
618 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
619 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
620 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
621 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
622 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
623 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
624 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
625 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
626 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
627 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
628 }
629 if (err2)
630 err = -EFAULT;
631 break;
632
633 default:
634 err = - EINVAL;
635 break;
636 }
637
638 return err;
639}
640
641static int
642do_sys32_msgsnd (int first, int second, int third, void *uptr)
643{
644 struct msgbuf32 *up = (struct msgbuf32 *)uptr;
645 struct msgbuf *p;
646 mm_segment_t old_fs;
647 int err;
648
649 if (second < 0)
650 return -EINVAL;
651 p = kmalloc (second + sizeof (struct msgbuf)
652 + 4, GFP_USER);
653 if (!p)
654 return -ENOMEM;
655 err = get_user (p->mtype, &up->mtype);
656 if (err)
657 goto out;
658 err |= __copy_from_user (p->mtext, &up->mtext, second);
659 if (err)
660 goto out;
661 old_fs = get_fs ();
662 set_fs (KERNEL_DS);
663 err = sys_msgsnd (first, p, second, third);
664 set_fs (old_fs);
665out:
666 kfree (p);
667
668 return err;
669}
670
671static int
672do_sys32_msgrcv (int first, int second, int msgtyp, int third,
673 int version, void *uptr)
674{
675 struct msgbuf32 *up;
676 struct msgbuf *p;
677 mm_segment_t old_fs;
678 int err;
679
680 if (!version) {
681 struct ipc_kludge32 *uipck = (struct ipc_kludge32 *)uptr;
682 struct ipc_kludge32 ipck;
683
684 err = -EINVAL;
685 if (!uptr)
686 goto out;
687 err = -EFAULT;
688 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
689 goto out;
690 uptr = (void *)AA(ipck.msgp);
691 msgtyp = ipck.msgtyp;
692 }
693
694 if (second < 0)
695 return -EINVAL;
696 err = -ENOMEM;
697 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
698 if (!p)
699 goto out;
700 old_fs = get_fs ();
701 set_fs (KERNEL_DS);
702 err = sys_msgrcv (first, p, second + 4, msgtyp, third);
703 set_fs (old_fs);
704 if (err < 0)
705 goto free_then_out;
706 up = (struct msgbuf32 *)uptr;
707 if (put_user (p->mtype, &up->mtype) ||
708 __copy_to_user (&up->mtext, p->mtext, err))
709 err = -EFAULT;
710free_then_out:
711 kfree (p);
712out:
713 return err;
714}
715
716static int
717do_sys32_msgctl (int first, int second, void *uptr)
718{
719 int err = -EINVAL, err2;
720 struct msqid64_ds m;
721 struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
722 struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
723 mm_segment_t old_fs;
724
725 switch (second & ~IPC_64) {
726 case IPC_INFO:
727 case IPC_RMID:
728 case MSG_INFO:
729 err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
730 break;
731
732 case IPC_SET:
733 if (second & IPC_64) {
734 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
735 err = -EFAULT;
736 break;
737 }
738 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
739 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
740 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
741 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
742 } else {
743 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
744 err = -EFAULT;
745 break;
746 }
747 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
748 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
749 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
750 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
751 }
752 if (err)
753 break;
754 old_fs = get_fs();
755 set_fs(KERNEL_DS);
756 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
757 set_fs(old_fs);
758 break;
759
760 case IPC_STAT:
761 case MSG_STAT:
762 old_fs = get_fs();
763 set_fs(KERNEL_DS);
764 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
765 set_fs(old_fs);
766 if (second & IPC_64) {
767 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
768 err = -EFAULT;
769 break;
770 }
771 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
772 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
773 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
774 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
775 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
776 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
777 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
778 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
779 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
780 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
781 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
782 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
783 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
784 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
785 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
786 if (err2)
787 err = -EFAULT;
788 } else {
789 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
790 err = -EFAULT;
791 break;
792 }
793 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
794 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
795 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
796 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
797 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
798 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
799 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
800 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
801 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
802 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
803 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
804 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
805 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
806 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
807 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
808 if (err2)
809 err = -EFAULT;
810 }
811 break;
812 }
813
814 return err;
815}
816
817static int
818do_sys32_shmat (int first, int second, int third, int version, void *uptr)
819{
820 unsigned long raddr;
821 u32 *uaddr = (u32 *)A((u32)third);
822 int err = -EINVAL;
823
824 if (version == 1)
825 return err;
826 err = do_shmat (first, uptr, second, &raddr);
827 if (err)
828 return err;
829 err = put_user (raddr, uaddr);
830 return err;
831}
832
833struct shm_info32 {
834 int used_ids;
835 u32 shm_tot, shm_rss, shm_swp;
836 u32 swap_attempts, swap_successes;
837};
838
839static int
840do_sys32_shmctl (int first, int second, void *uptr)
841{
842 struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
843 struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
844 struct shm_info32 *uip = (struct shm_info32 *)uptr;
845 int err = -EFAULT, err2;
846 struct shmid64_ds s64;
847 mm_segment_t old_fs;
848 struct shm_info si;
849 struct shmid_ds s;
850
851 switch (second & ~IPC_64) {
852 case IPC_INFO:
853 second = IPC_INFO; /* So that we don't have to translate it */
854 case IPC_RMID:
855 case SHM_LOCK:
856 case SHM_UNLOCK:
857 err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
858 break;
859 case IPC_SET:
860 if (second & IPC_64) {
861 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
862 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
863 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
864 } else {
865 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
866 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
867 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
868 }
869 if (err)
870 break;
871 old_fs = get_fs();
872 set_fs(KERNEL_DS);
873 err = sys_shmctl(first, second & ~IPC_64, &s);
874 set_fs(old_fs);
875 break;
876
877 case IPC_STAT:
878 case SHM_STAT:
879 old_fs = get_fs();
880 set_fs(KERNEL_DS);
881 err = sys_shmctl(first, second | IPC_64, (void *) &s64);
882 set_fs(old_fs);
883 if (err < 0)
884 break;
885 if (second & IPC_64) {
886 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
887 err = -EFAULT;
888 break;
889 }
890 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
891 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
892 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
893 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
894 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
895 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
896 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
897 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
898 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
899 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
900 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
901 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
902 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
903 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
904 } else {
905 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
906 err = -EFAULT;
907 break;
908 }
909 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
910 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
911 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
912 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
913 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
914 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
915 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
916 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
917 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
918 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
919 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
920 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
921 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
922 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
923 }
924 if (err2)
925 err = -EFAULT;
926 break;
927
928 case SHM_INFO:
929 old_fs = get_fs();
930 set_fs(KERNEL_DS);
931 err = sys_shmctl(first, second, (void *)&si);
932 set_fs(old_fs);
933 if (err < 0)
934 break;
935 err2 = put_user(si.used_ids, &uip->used_ids);
936 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
937 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
938 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
939 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
940 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
941 if (err2)
942 err = -EFAULT;
943 break;
944
945 default:
946 err = -EINVAL;
947 break;
948 }
949
950 return err;
951}
952
953static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems,
954 const struct compat_timespec *timeout32)
955{
956 struct compat_timespec t32;
957 struct timespec *t64 = compat_alloc_user_space(sizeof(*t64));
958
959 if (copy_from_user(&t32, timeout32, sizeof(t32)))
960 return -EFAULT;
961
962 if (put_user(t32.tv_sec, &t64->tv_sec) ||
963 put_user(t32.tv_nsec, &t64->tv_nsec))
964 return -EFAULT;
965
966 return sys_semtimedop(semid, tsems, nsems, t64);
967}
968
969asmlinkage long
970sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
971{
972 int version, err;
973
974 version = call >> 16; /* hack for backward compatibility */
975 call &= 0xffff;
976
977 switch (call) {
978 case SEMOP:
979 /* struct sembuf is the same on 32 and 64bit :)) */
980 err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second,
981 NULL);
982 break;
983 case SEMTIMEDOP:
984 err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second,
985 (const struct compat_timespec __user *)AA(fifth));
986 break;
987 case SEMGET:
988 err = sys_semget (first, second, third);
989 break;
990 case SEMCTL:
991 err = do_sys32_semctl (first, second, third,
992 (void *)AA(ptr));
993 break;
994
995 case MSGSND:
996 err = do_sys32_msgsnd (first, second, third,
997 (void *)AA(ptr));
998 break;
999 case MSGRCV:
1000 err = do_sys32_msgrcv (first, second, fifth, third,
1001 version, (void *)AA(ptr));
1002 break;
1003 case MSGGET:
1004 err = sys_msgget ((key_t) first, second);
1005 break;
1006 case MSGCTL:
1007 err = do_sys32_msgctl (first, second, (void *)AA(ptr));
1008 break;
1009
1010 case SHMAT:
1011 err = do_sys32_shmat (first, second, third,
1012 version, (void *)AA(ptr));
1013 break;
1014 case SHMDT:
1015 err = sys_shmdt ((char *)A(ptr));
1016 break;
1017 case SHMGET:
1018 err = sys_shmget (first, (unsigned)second, third);
1019 break;
1020 case SHMCTL:
1021 err = do_sys32_shmctl (first, second, (void *)AA(ptr));
1022 break;
1023 default:
1024 err = -EINVAL;
1025 break;
1026 }
1027
1028 return err;
1029}
1030
1031asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
1032 int shmflg, int32_t *addr)
1033{
1034 unsigned long raddr;
1035 int err;
1036
1037 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1038 if (err)
1039 return err;
1040
1041 return put_user(raddr, addr);
1042}
1043
1044struct sysctl_args32
1045{
1046 compat_caddr_t name;
1047 int nlen;
1048 compat_caddr_t oldval;
1049 compat_caddr_t oldlenp;
1050 compat_caddr_t newval;
1051 compat_size_t newlen;
1052 unsigned int __unused[4];
1053};
1054
1055#ifdef CONFIG_SYSCTL
1056
1057asmlinkage long sys32_sysctl(struct sysctl_args32 *args)
1058{
1059 struct sysctl_args32 tmp;
1060 int error;
1061 size_t oldlen, *oldlenp = NULL;
1062 unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
1063
1064 if (copy_from_user(&tmp, args, sizeof(tmp)))
1065 return -EFAULT;
1066
1067 if (tmp.oldval && tmp.oldlenp) {
1068 /* Duh, this is ugly and might not work if sysctl_args
1069 is in read-only memory, but do_sysctl does indirectly
1070 a lot of uaccess in both directions and we'd have to
1071 basically copy the whole sysctl.c here, and
1072 glibc's __sysctl uses rw memory for the structure
1073 anyway. */
1074 if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
1075 put_user(oldlen, (size_t *)addr))
1076 return -EFAULT;
1077 oldlenp = (size_t *)addr;
1078 }
1079
1080 lock_kernel();
1081 error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval),
1082 oldlenp, (void *)A(tmp.newval), tmp.newlen);
1083 unlock_kernel();
1084 if (oldlenp) {
1085 if (!error) {
1086 if (get_user(oldlen, (size_t *)addr) ||
1087 put_user(oldlen, (u32 *)A(tmp.oldlenp)))
1088 error = -EFAULT;
1089 }
1090 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1091 }
1092 return error;
1093}
1094
1095#endif /* CONFIG_SYSCTL */
1096
1097asmlinkage long sys32_newuname(struct new_utsname * name)
1098{
1099 int ret = 0;
1100
1101 down_read(&uts_sem);
1102 if (copy_to_user(name,&system_utsname,sizeof *name))
1103 ret = -EFAULT;
1104 up_read(&uts_sem);
1105
1106 if (current->personality == PER_LINUX32 && !ret)
1107 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1108 ret = -EFAULT;
1109
1110 return ret;
1111}
1112
1113asmlinkage int sys32_personality(unsigned long personality)
1114{
1115 int ret;
1116 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1117 personality = PER_LINUX32;
1118 ret = sys_personality(personality);
1119 if (ret == PER_LINUX32)
1120 ret = PER_LINUX;
1121 return ret;
1122}
1123
1124/* ustat compatibility */
1125struct ustat32 {
1126 compat_daddr_t f_tfree;
1127 compat_ino_t f_tinode;
1128 char f_fname[6];
1129 char f_fpack[6];
1130};
1131
1132extern asmlinkage long sys_ustat(dev_t dev, struct ustat * ubuf);
1133
1134asmlinkage int sys32_ustat(dev_t dev, struct ustat32 * ubuf32)
1135{
1136 int err;
1137 struct ustat tmp;
1138 struct ustat32 tmp32;
1139 mm_segment_t old_fs = get_fs();
1140
1141 set_fs(KERNEL_DS);
1142 err = sys_ustat(dev, &tmp);
1143 set_fs (old_fs);
1144
1145 if (err)
1146 goto out;
1147
1148 memset(&tmp32,0,sizeof(struct ustat32));
1149 tmp32.f_tfree = tmp.f_tfree;
1150 tmp32.f_tinode = tmp.f_tinode;
1151
1152 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1153
1154out:
1155 return err;
1156}
1157
1158/* Handle adjtimex compatibility. */
1159
1160struct timex32 {
1161 u32 modes;
1162 s32 offset, freq, maxerror, esterror;
1163 s32 status, constant, precision, tolerance;
1164 struct compat_timeval time;
1165 s32 tick;
1166 s32 ppsfreq, jitter, shift, stabil;
1167 s32 jitcnt, calcnt, errcnt, stbcnt;
1168 s32 :32; s32 :32; s32 :32; s32 :32;
1169 s32 :32; s32 :32; s32 :32; s32 :32;
1170 s32 :32; s32 :32; s32 :32; s32 :32;
1171};
1172
1173extern int do_adjtimex(struct timex *);
1174
1175asmlinkage int sys32_adjtimex(struct timex32 *utp)
1176{
1177 struct timex txc;
1178 int ret;
1179
1180 memset(&txc, 0, sizeof(struct timex));
1181
1182 if (get_user(txc.modes, &utp->modes) ||
1183 __get_user(txc.offset, &utp->offset) ||
1184 __get_user(txc.freq, &utp->freq) ||
1185 __get_user(txc.maxerror, &utp->maxerror) ||
1186 __get_user(txc.esterror, &utp->esterror) ||
1187 __get_user(txc.status, &utp->status) ||
1188 __get_user(txc.constant, &utp->constant) ||
1189 __get_user(txc.precision, &utp->precision) ||
1190 __get_user(txc.tolerance, &utp->tolerance) ||
1191 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1192 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1193 __get_user(txc.tick, &utp->tick) ||
1194 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1195 __get_user(txc.jitter, &utp->jitter) ||
1196 __get_user(txc.shift, &utp->shift) ||
1197 __get_user(txc.stabil, &utp->stabil) ||
1198 __get_user(txc.jitcnt, &utp->jitcnt) ||
1199 __get_user(txc.calcnt, &utp->calcnt) ||
1200 __get_user(txc.errcnt, &utp->errcnt) ||
1201 __get_user(txc.stbcnt, &utp->stbcnt))
1202 return -EFAULT;
1203
1204 ret = do_adjtimex(&txc);
1205
1206 if (put_user(txc.modes, &utp->modes) ||
1207 __put_user(txc.offset, &utp->offset) ||
1208 __put_user(txc.freq, &utp->freq) ||
1209 __put_user(txc.maxerror, &utp->maxerror) ||
1210 __put_user(txc.esterror, &utp->esterror) ||
1211 __put_user(txc.status, &utp->status) ||
1212 __put_user(txc.constant, &utp->constant) ||
1213 __put_user(txc.precision, &utp->precision) ||
1214 __put_user(txc.tolerance, &utp->tolerance) ||
1215 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1216 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1217 __put_user(txc.tick, &utp->tick) ||
1218 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1219 __put_user(txc.jitter, &utp->jitter) ||
1220 __put_user(txc.shift, &utp->shift) ||
1221 __put_user(txc.stabil, &utp->stabil) ||
1222 __put_user(txc.jitcnt, &utp->jitcnt) ||
1223 __put_user(txc.calcnt, &utp->calcnt) ||
1224 __put_user(txc.errcnt, &utp->errcnt) ||
1225 __put_user(txc.stbcnt, &utp->stbcnt))
1226 ret = -EFAULT;
1227
1228 return ret;
1229}
1230
1231asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset,
1232 s32 count)
1233{
1234 mm_segment_t old_fs = get_fs();
1235 int ret;
1236 off_t of;
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 if (offset && get_user(of, offset))
1239 return -EFAULT;
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001240
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241 set_fs(KERNEL_DS);
1242 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
1243 set_fs(old_fs);
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001244
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 if (offset && put_user(of, offset))
1246 return -EFAULT;
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001247
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 return ret;
1249}
1250
1251asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1252 size_t count)
1253{
1254 return sys_readahead(fd, merge_64(a2, a3), count);
1255}
1256
1257/* Argument list sizes for sys_socketcall */
1258#define AL(x) ((x) * sizeof(unsigned int))
1259static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1260 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1261 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1262#undef AL
1263
1264/*
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001265 * System call vectors.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 *
1267 * Argument checking cleaned up. Saved 20% in size.
1268 * This function doesn't need to set the kernel lock because
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001269 * it is set by the callees.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 */
1271
1272asmlinkage long sys32_socketcall(int call, unsigned int *args32)
1273{
1274 unsigned int a[6];
1275 unsigned int a0,a1;
1276 int err;
1277
1278 extern asmlinkage long sys_socket(int family, int type, int protocol);
1279 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1280 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1281 extern asmlinkage long sys_listen(int fd, int backlog);
1282 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1283 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1284 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1285 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1286 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1287 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1288 struct sockaddr __user *addr, int addr_len);
1289 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1290 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1291 struct sockaddr __user *addr, int __user *addr_len);
1292 extern asmlinkage long sys_shutdown(int fd, int how);
1293 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1294 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int *optlen);
1295 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1296 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1297
1298
1299 if(call<1||call>SYS_RECVMSG)
1300 return -EINVAL;
1301
1302 /* copy_from_user should be SMP safe. */
1303 if (copy_from_user(a, args32, socketcall_nargs[call]))
1304 return -EFAULT;
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001305
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 a0=a[0];
1307 a1=a[1];
Ralf Baechle42a3b4f22005-09-03 15:56:17 -07001308
1309 switch(call)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 {
1311 case SYS_SOCKET:
1312 err = sys_socket(a0,a1,a[2]);
1313 break;
1314 case SYS_BIND:
1315 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1316 break;
1317 case SYS_CONNECT:
1318 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1319 break;
1320 case SYS_LISTEN:
1321 err = sys_listen(a0,a1);
1322 break;
1323 case SYS_ACCEPT:
1324 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1325 break;
1326 case SYS_GETSOCKNAME:
1327 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1328 break;
1329 case SYS_GETPEERNAME:
1330 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1331 break;
1332 case SYS_SOCKETPAIR:
1333 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1334 break;
1335 case SYS_SEND:
1336 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1337 break;
1338 case SYS_SENDTO:
1339 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1340 (struct sockaddr __user *)A(a[4]), a[5]);
1341 break;
1342 case SYS_RECV:
1343 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1344 break;
1345 case SYS_RECVFROM:
1346 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1347 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1348 break;
1349 case SYS_SHUTDOWN:
1350 err = sys_shutdown(a0,a1);
1351 break;
1352 case SYS_SETSOCKOPT:
1353 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1354 break;
1355 case SYS_GETSOCKOPT:
1356 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1357 break;
1358 case SYS_SENDMSG:
1359 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1360 break;
1361 case SYS_RECVMSG:
1362 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1363 break;
1364 default:
1365 err = -EINVAL;
1366 break;
1367 }
1368 return err;
1369}
Ralf Baechled1abb6a2005-02-16 21:25:03 +00001370
1371struct sigevent32 {
1372 u32 sigev_value;
1373 u32 sigev_signo;
1374 u32 sigev_notify;
1375 u32 payload[(64 / 4) - 3];
1376};
1377
1378extern asmlinkage long
1379sys_timer_create(clockid_t which_clock,
1380 struct sigevent __user *timer_event_spec,
1381 timer_t __user * created_timer_id);
1382
1383long
1384sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1385{
1386 struct sigevent __user *p = NULL;
1387 if (se32) {
1388 struct sigevent se;
1389 p = compat_alloc_user_space(sizeof(struct sigevent));
1390 memset(&se, 0, sizeof(struct sigevent));
1391 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1392 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1393 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1394 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1395 sizeof(se32->payload)) ||
1396 copy_to_user(p, &se, sizeof(se)))
1397 return -EFAULT;
1398 }
1399 return sys_timer_create(clock, p, timer_id);
1400}
1401
Ralf Baechle3c370262005-04-13 17:43:59 +00001402save_static_function(sys32_clone);
1403__attribute_used__ noinline static int
1404_sys32_clone(nabi_no_regargs struct pt_regs regs)
1405{
1406 unsigned long clone_flags;
1407 unsigned long newsp;
1408 int __user *parent_tidptr, *child_tidptr;
1409
1410 clone_flags = regs.regs[4];
1411 newsp = regs.regs[5];
1412 if (!newsp)
1413 newsp = regs.regs[29];
1414 parent_tidptr = (int *) regs.regs[6];
1415
1416 /* Use __dummy4 instead of getting it off the stack, so that
1417 syscall() works. */
1418 child_tidptr = (int __user *) __dummy4;
1419 return do_fork(clone_flags, newsp, &regs, 0,
1420 parent_tidptr, child_tidptr);
1421}
1422
1423extern asmlinkage void sys_set_thread_area(u32 addr);
1424asmlinkage void sys32_set_thread_area(u32 addr)
1425{
1426 sys_set_thread_area(AA(addr));
1427}