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[MIPS] Further sparsification for 32-bit compat code.
[linux-2.6/linux-mips.git] / arch / mips / kernel / linux32.c
blob1e8d24823d3980e262a4d36b1400cbe65b0a9d51
1 /*
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
72 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *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
101 asmlinkage unsigned long
102 sys32_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
123 out:
124 return error;
125 }
126
127
128 asmlinkage int sys_truncate64(const char __user *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
136 asmlinkage 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 */
147 asmlinkage 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
160 out:
161 return error;
162 }
163
164 asmlinkage long
165 sysn32_waitid(int which, compat_pid_t pid,
166 siginfo_t __user *uinfo, int options,
167 struct compat_rusage __user *uru)
168 {
169 struct rusage ru;
170 long ret;
171 mm_segment_t old_fs = get_fs();
172 int si_signo;
173
174 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
175 return -EFAULT;
176
177 set_fs (KERNEL_DS);
178 ret = sys_waitid(which, pid, uinfo, options,
179 uru ? (struct rusage __user *) &ru : NULL);
180 set_fs (old_fs);
181
182 if (__get_user(si_signo, &uinfo->si_signo))
183 return -EFAULT;
184 if (ret < 0 || si_signo == 0)
185 return ret;
186
187 if (uru)
188 ret = put_compat_rusage(&ru, uru);
189 return ret;
190 }
191
192 struct sysinfo32 {
193 s32 uptime;
194 u32 loads[3];
195 u32 totalram;
196 u32 freeram;
197 u32 sharedram;
198 u32 bufferram;
199 u32 totalswap;
200 u32 freeswap;
201 u16 procs;
202 u32 totalhigh;
203 u32 freehigh;
204 u32 mem_unit;
205 char _f[8];
206 };
207
208 asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
209 {
210 struct sysinfo s;
211 int ret, err;
212 mm_segment_t old_fs = get_fs ();
213
214 set_fs (KERNEL_DS);
215 ret = sys_sysinfo((struct sysinfo __user *)&s);
216 set_fs (old_fs);
217 err = put_user (s.uptime, &info->uptime);
218 err |= __put_user (s.loads[0], &info->loads[0]);
219 err |= __put_user (s.loads[1], &info->loads[1]);
220 err |= __put_user (s.loads[2], &info->loads[2]);
221 err |= __put_user (s.totalram, &info->totalram);
222 err |= __put_user (s.freeram, &info->freeram);
223 err |= __put_user (s.sharedram, &info->sharedram);
224 err |= __put_user (s.bufferram, &info->bufferram);
225 err |= __put_user (s.totalswap, &info->totalswap);
226 err |= __put_user (s.freeswap, &info->freeswap);
227 err |= __put_user (s.procs, &info->procs);
228 err |= __put_user (s.totalhigh, &info->totalhigh);
229 err |= __put_user (s.freehigh, &info->freehigh);
230 err |= __put_user (s.mem_unit, &info->mem_unit);
231 if (err)
232 return -EFAULT;
233 return ret;
234 }
235
236 #define RLIM_INFINITY32 0x7fffffff
237 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
238
239 struct rlimit32 {
240 int rlim_cur;
241 int rlim_max;
242 };
243
244 #ifdef __MIPSEB__
245 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
246 int length_hi, int length_lo)
247 #endif
248 #ifdef __MIPSEL__
249 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
250 int length_lo, int length_hi)
251 #endif
252 {
253 loff_t length;
254
255 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
256
257 return sys_truncate(path, length);
258 }
259
260 #ifdef __MIPSEB__
261 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
262 int length_hi, int length_lo)
263 #endif
264 #ifdef __MIPSEL__
265 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
266 int length_lo, int length_hi)
267 #endif
268 {
269 loff_t length;
270
271 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
272
273 return sys_ftruncate(fd, length);
274 }
275
276 static inline long
277 get_tv32(struct timeval *o, struct compat_timeval __user *i)
278 {
279 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
280 (__get_user(o->tv_sec, &i->tv_sec) |
281 __get_user(o->tv_usec, &i->tv_usec)));
282 }
283
284 static inline long
285 put_tv32(struct compat_timeval __user *o, struct timeval *i)
286 {
287 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
288 (__put_user(i->tv_sec, &o->tv_sec) |
289 __put_user(i->tv_usec, &o->tv_usec)));
290 }
291
292 extern struct timezone sys_tz;
293
294 asmlinkage int
295 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
296 {
297 if (tv) {
298 struct timeval ktv;
299 do_gettimeofday(&ktv);
300 if (put_tv32(tv, &ktv))
301 return -EFAULT;
302 }
303 if (tz) {
304 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
305 return -EFAULT;
306 }
307 return 0;
308 }
309
310 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
311 {
312 long usec;
313
314 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
315 return -EFAULT;
316 if (__get_user(o->tv_sec, &i->tv_sec))
317 return -EFAULT;
318 if (__get_user(usec, &i->tv_usec))
319 return -EFAULT;
320 o->tv_nsec = usec * 1000;
321 return 0;
322 }
323
324 asmlinkage int
325 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
326 {
327 struct timespec kts;
328 struct timezone ktz;
329
330 if (tv) {
331 if (get_ts32(&kts, tv))
332 return -EFAULT;
333 }
334 if (tz) {
335 if (copy_from_user(&ktz, tz, sizeof(ktz)))
336 return -EFAULT;
337 }
338
339 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
340 }
341
342 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
343 unsigned int offset_low, loff_t __user * result,
344 unsigned int origin)
345 {
346 return sys_llseek(fd, offset_high, offset_low, result, origin);
347 }
348
349 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
350 lseek back to original location. They fail just like lseek does on
351 non-seekable files. */
352
353 asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
354 size_t count, u32 unused, u64 a4, u64 a5)
355 {
356 ssize_t ret;
357 struct file * file;
358 ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
359 loff_t pos;
360
361 ret = -EBADF;
362 file = fget(fd);
363 if (!file)
364 goto bad_file;
365 if (!(file->f_mode & FMODE_READ))
366 goto out;
367 pos = merge_64(a4, a5);
368 ret = rw_verify_area(READ, file, &pos, count);
369 if (ret < 0)
370 goto out;
371 ret = -EINVAL;
372 if (!file->f_op || !(read = file->f_op->read))
373 goto out;
374 if (pos < 0)
375 goto out;
376 ret = -ESPIPE;
377 if (!(file->f_mode & FMODE_PREAD))
378 goto out;
379 ret = read(file, buf, count, &pos);
380 if (ret > 0)
381 dnotify_parent(file->f_dentry, DN_ACCESS);
382 out:
383 fput(file);
384 bad_file:
385 return ret;
386 }
387
388 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
389 size_t count, u32 unused, u64 a4, u64 a5)
390 {
391 ssize_t ret;
392 struct file * file;
393 ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
394 loff_t pos;
395
396 ret = -EBADF;
397 file = fget(fd);
398 if (!file)
399 goto bad_file;
400 if (!(file->f_mode & FMODE_WRITE))
401 goto out;
402 pos = merge_64(a4, a5);
403 ret = rw_verify_area(WRITE, file, &pos, count);
404 if (ret < 0)
405 goto out;
406 ret = -EINVAL;
407 if (!file->f_op || !(write = file->f_op->write))
408 goto out;
409 if (pos < 0)
410 goto out;
411
412 ret = -ESPIPE;
413 if (!(file->f_mode & FMODE_PWRITE))
414 goto out;
415
416 ret = write(file, buf, count, &pos);
417 if (ret > 0)
418 dnotify_parent(file->f_dentry, DN_MODIFY);
419 out:
420 fput(file);
421 bad_file:
422 return ret;
423 }
424
425 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
426 struct compat_timespec __user *interval)
427 {
428 struct timespec t;
429 int ret;
430 mm_segment_t old_fs = get_fs ();
431
432 set_fs (KERNEL_DS);
433 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
434 set_fs (old_fs);
435 if (put_user (t.tv_sec, &interval->tv_sec) ||
436 __put_user (t.tv_nsec, &interval->tv_nsec))
437 return -EFAULT;
438 return ret;
439 }
440
441 struct msgbuf32 { s32 mtype; char mtext[1]; };
442
443 struct ipc_perm32
444 {
445 key_t key;
446 __compat_uid_t uid;
447 __compat_gid_t gid;
448 __compat_uid_t cuid;
449 __compat_gid_t cgid;
450 compat_mode_t mode;
451 unsigned short seq;
452 };
453
454 struct ipc64_perm32 {
455 key_t key;
456 __compat_uid_t uid;
457 __compat_gid_t gid;
458 __compat_uid_t cuid;
459 __compat_gid_t cgid;
460 compat_mode_t mode;
461 unsigned short seq;
462 unsigned short __pad1;
463 unsigned int __unused1;
464 unsigned int __unused2;
465 };
466
467 struct semid_ds32 {
468 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
469 compat_time_t sem_otime; /* last semop time */
470 compat_time_t sem_ctime; /* last change time */
471 u32 sem_base; /* ptr to first semaphore in array */
472 u32 sem_pending; /* pending operations to be processed */
473 u32 sem_pending_last; /* last pending operation */
474 u32 undo; /* undo requests on this array */
475 unsigned short sem_nsems; /* no. of semaphores in array */
476 };
477
478 struct semid64_ds32 {
479 struct ipc64_perm32 sem_perm;
480 compat_time_t sem_otime;
481 compat_time_t sem_ctime;
482 unsigned int sem_nsems;
483 unsigned int __unused1;
484 unsigned int __unused2;
485 };
486
487 struct msqid_ds32
488 {
489 struct ipc_perm32 msg_perm;
490 u32 msg_first;
491 u32 msg_last;
492 compat_time_t msg_stime;
493 compat_time_t msg_rtime;
494 compat_time_t msg_ctime;
495 u32 wwait;
496 u32 rwait;
497 unsigned short msg_cbytes;
498 unsigned short msg_qnum;
499 unsigned short msg_qbytes;
500 compat_ipc_pid_t msg_lspid;
501 compat_ipc_pid_t msg_lrpid;
502 };
503
504 struct msqid64_ds32 {
505 struct ipc64_perm32 msg_perm;
506 compat_time_t msg_stime;
507 unsigned int __unused1;
508 compat_time_t msg_rtime;
509 unsigned int __unused2;
510 compat_time_t msg_ctime;
511 unsigned int __unused3;
512 unsigned int msg_cbytes;
513 unsigned int msg_qnum;
514 unsigned int msg_qbytes;
515 compat_pid_t msg_lspid;
516 compat_pid_t msg_lrpid;
517 unsigned int __unused4;
518 unsigned int __unused5;
519 };
520
521 struct shmid_ds32 {
522 struct ipc_perm32 shm_perm;
523 int shm_segsz;
524 compat_time_t shm_atime;
525 compat_time_t shm_dtime;
526 compat_time_t shm_ctime;
527 compat_ipc_pid_t shm_cpid;
528 compat_ipc_pid_t shm_lpid;
529 unsigned short shm_nattch;
530 };
531
532 struct shmid64_ds32 {
533 struct ipc64_perm32 shm_perm;
534 compat_size_t shm_segsz;
535 compat_time_t shm_atime;
536 compat_time_t shm_dtime;
537 compat_time_t shm_ctime;
538 compat_pid_t shm_cpid;
539 compat_pid_t shm_lpid;
540 unsigned int shm_nattch;
541 unsigned int __unused1;
542 unsigned int __unused2;
543 };
544
545 struct ipc_kludge32 {
546 u32 msgp;
547 s32 msgtyp;
548 };
549
550 static int
551 do_sys32_semctl(int first, int second, int third, void __user *uptr)
552 {
553 union semun fourth;
554 u32 pad;
555 int err, err2;
556 struct semid64_ds s;
557 mm_segment_t old_fs;
558
559 if (!uptr)
560 return -EINVAL;
561 err = -EFAULT;
562 if (get_user (pad, (u32 __user *)uptr))
563 return err;
564 if ((third & ~IPC_64) == SETVAL)
565 fourth.val = (int)pad;
566 else
567 fourth.__pad = (void __user *)A(pad);
568 switch (third & ~IPC_64) {
569 case IPC_INFO:
570 case IPC_RMID:
571 case IPC_SET:
572 case SEM_INFO:
573 case GETVAL:
574 case GETPID:
575 case GETNCNT:
576 case GETZCNT:
577 case GETALL:
578 case SETVAL:
579 case SETALL:
580 err = sys_semctl (first, second, third, fourth);
581 break;
582
583 case IPC_STAT:
584 case SEM_STAT:
585 fourth.__pad = (struct semid64_ds __user *)&s;
586 old_fs = get_fs();
587 set_fs(KERNEL_DS);
588 err = sys_semctl(first, second, third | IPC_64, fourth);
589 set_fs(old_fs);
590
591 if (third & IPC_64) {
592 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
593
594 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
595 err = -EFAULT;
596 break;
597 }
598 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
599 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
600 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
601 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
602 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
603 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
604 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
605 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
606 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
607 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
608 } else {
609 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
610
611 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
612 err = -EFAULT;
613 break;
614 }
615 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
616 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
617 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
618 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
619 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
620 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
621 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
622 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
623 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
624 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
625 }
626 if (err2)
627 err = -EFAULT;
628 break;
629
630 default:
631 err = - EINVAL;
632 break;
633 }
634
635 return err;
636 }
637
638 static int
639 do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
640 {
641 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
642 struct msgbuf *p;
643 mm_segment_t old_fs;
644 int err;
645
646 if (second < 0)
647 return -EINVAL;
648 p = kmalloc (second + sizeof (struct msgbuf)
649 + 4, GFP_USER);
650 if (!p)
651 return -ENOMEM;
652 err = get_user (p->mtype, &up->mtype);
653 if (err)
654 goto out;
655 err |= __copy_from_user (p->mtext, &up->mtext, second);
656 if (err)
657 goto out;
658 old_fs = get_fs ();
659 set_fs (KERNEL_DS);
660 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
661 set_fs (old_fs);
662 out:
663 kfree (p);
664
665 return err;
666 }
667
668 static int
669 do_sys32_msgrcv (int first, int second, int msgtyp, int third,
670 int version, void __user *uptr)
671 {
672 struct msgbuf32 __user *up;
673 struct msgbuf *p;
674 mm_segment_t old_fs;
675 int err;
676
677 if (!version) {
678 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
679 struct ipc_kludge32 ipck;
680
681 err = -EINVAL;
682 if (!uptr)
683 goto out;
684 err = -EFAULT;
685 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
686 goto out;
687 uptr = (void __user *)AA(ipck.msgp);
688 msgtyp = ipck.msgtyp;
689 }
690
691 if (second < 0)
692 return -EINVAL;
693 err = -ENOMEM;
694 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
695 if (!p)
696 goto out;
697 old_fs = get_fs ();
698 set_fs (KERNEL_DS);
699 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
700 set_fs (old_fs);
701 if (err < 0)
702 goto free_then_out;
703 up = (struct msgbuf32 __user *)uptr;
704 if (put_user (p->mtype, &up->mtype) ||
705 __copy_to_user (&up->mtext, p->mtext, err))
706 err = -EFAULT;
707 free_then_out:
708 kfree (p);
709 out:
710 return err;
711 }
712
713 static int
714 do_sys32_msgctl (int first, int second, void __user *uptr)
715 {
716 int err = -EINVAL, err2;
717 struct msqid64_ds m;
718 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
719 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
720 mm_segment_t old_fs;
721
722 switch (second & ~IPC_64) {
723 case IPC_INFO:
724 case IPC_RMID:
725 case MSG_INFO:
726 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
727 break;
728
729 case IPC_SET:
730 if (second & IPC_64) {
731 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
732 err = -EFAULT;
733 break;
734 }
735 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
736 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
737 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
738 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
739 } else {
740 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
741 err = -EFAULT;
742 break;
743 }
744 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
745 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
746 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
747 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
748 }
749 if (err)
750 break;
751 old_fs = get_fs();
752 set_fs(KERNEL_DS);
753 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
754 set_fs(old_fs);
755 break;
756
757 case IPC_STAT:
758 case MSG_STAT:
759 old_fs = get_fs();
760 set_fs(KERNEL_DS);
761 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
762 set_fs(old_fs);
763 if (second & IPC_64) {
764 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
765 err = -EFAULT;
766 break;
767 }
768 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
769 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
770 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
771 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
772 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
773 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
774 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
775 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
776 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
777 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
778 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
779 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
780 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
781 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
782 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
783 if (err2)
784 err = -EFAULT;
785 } else {
786 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
787 err = -EFAULT;
788 break;
789 }
790 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
791 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
792 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
793 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
794 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
795 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
796 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
797 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
798 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
799 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
800 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
801 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
802 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
803 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
804 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
805 if (err2)
806 err = -EFAULT;
807 }
808 break;
809 }
810
811 return err;
812 }
813
814 static int
815 do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
816 {
817 unsigned long raddr;
818 u32 __user *uaddr = (u32 __user *)A((u32)third);
819 int err = -EINVAL;
820
821 if (version == 1)
822 return err;
823 err = do_shmat (first, uptr, second, &raddr);
824 if (err)
825 return err;
826 err = put_user (raddr, uaddr);
827 return err;
828 }
829
830 struct shm_info32 {
831 int used_ids;
832 u32 shm_tot, shm_rss, shm_swp;
833 u32 swap_attempts, swap_successes;
834 };
835
836 static int
837 do_sys32_shmctl (int first, int second, void __user *uptr)
838 {
839 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
840 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
841 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
842 int err = -EFAULT, err2;
843 struct shmid64_ds s64;
844 mm_segment_t old_fs;
845 struct shm_info si;
846 struct shmid_ds s;
847
848 switch (second & ~IPC_64) {
849 case IPC_INFO:
850 second = IPC_INFO; /* So that we don't have to translate it */
851 case IPC_RMID:
852 case SHM_LOCK:
853 case SHM_UNLOCK:
854 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
855 break;
856 case IPC_SET:
857 if (second & IPC_64) {
858 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
859 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
860 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
861 } else {
862 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
863 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
864 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
865 }
866 if (err)
867 break;
868 old_fs = get_fs();
869 set_fs(KERNEL_DS);
870 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
871 set_fs(old_fs);
872 break;
873
874 case IPC_STAT:
875 case SHM_STAT:
876 old_fs = get_fs();
877 set_fs(KERNEL_DS);
878 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
879 set_fs(old_fs);
880 if (err < 0)
881 break;
882 if (second & IPC_64) {
883 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
884 err = -EFAULT;
885 break;
886 }
887 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
888 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
889 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
890 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
891 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
892 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
893 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
894 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
895 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
896 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
897 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
898 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
899 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
900 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
901 } else {
902 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
903 err = -EFAULT;
904 break;
905 }
906 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
907 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
908 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
909 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
910 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
911 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
912 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
913 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
914 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
915 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
916 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
917 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
918 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
919 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
920 }
921 if (err2)
922 err = -EFAULT;
923 break;
924
925 case SHM_INFO:
926 old_fs = get_fs();
927 set_fs(KERNEL_DS);
928 err = sys_shmctl(first, second, (void __user *)&si);
929 set_fs(old_fs);
930 if (err < 0)
931 break;
932 err2 = put_user(si.used_ids, &uip->used_ids);
933 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
934 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
935 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
936 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
937 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
938 if (err2)
939 err = -EFAULT;
940 break;
941
942 default:
943 err = -EINVAL;
944 break;
945 }
946
947 return err;
948 }
949
950 static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
951 const struct compat_timespec __user *timeout32)
952 {
953 struct compat_timespec t32;
954 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
955
956 if (copy_from_user(&t32, timeout32, sizeof(t32)))
957 return -EFAULT;
958
959 if (put_user(t32.tv_sec, &t64->tv_sec) ||
960 put_user(t32.tv_nsec, &t64->tv_nsec))
961 return -EFAULT;
962
963 return sys_semtimedop(semid, tsems, nsems, t64);
964 }
965
966 asmlinkage long
967 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
968 {
969 int version, err;
970
971 version = call >> 16; /* hack for backward compatibility */
972 call &= 0xffff;
973
974 switch (call) {
975 case SEMOP:
976 /* struct sembuf is the same on 32 and 64bit :)) */
977 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
978 NULL);
979 break;
980 case SEMTIMEDOP:
981 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
982 (const struct compat_timespec __user *)AA(fifth));
983 break;
984 case SEMGET:
985 err = sys_semget (first, second, third);
986 break;
987 case SEMCTL:
988 err = do_sys32_semctl (first, second, third,
989 (void __user *)AA(ptr));
990 break;
991
992 case MSGSND:
993 err = do_sys32_msgsnd (first, second, third,
994 (void __user *)AA(ptr));
995 break;
996 case MSGRCV:
997 err = do_sys32_msgrcv (first, second, fifth, third,
998 version, (void __user *)AA(ptr));
999 break;
1000 case MSGGET:
1001 err = sys_msgget ((key_t) first, second);
1002 break;
1003 case MSGCTL:
1004 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
1005 break;
1006
1007 case SHMAT:
1008 err = do_sys32_shmat (first, second, third,
1009 version, (void __user *)AA(ptr));
1010 break;
1011 case SHMDT:
1012 err = sys_shmdt ((char __user *)A(ptr));
1013 break;
1014 case SHMGET:
1015 err = sys_shmget (first, (unsigned)second, third);
1016 break;
1017 case SHMCTL:
1018 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
1019 break;
1020 default:
1021 err = -EINVAL;
1022 break;
1023 }
1024
1025 return err;
1026 }
1027
1028 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
1029 int shmflg, int32_t __user *addr)
1030 {
1031 unsigned long raddr;
1032 int err;
1033
1034 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1035 if (err)
1036 return err;
1037
1038 return put_user(raddr, addr);
1039 }
1040
1041 struct sysctl_args32
1042 {
1043 compat_caddr_t name;
1044 int nlen;
1045 compat_caddr_t oldval;
1046 compat_caddr_t oldlenp;
1047 compat_caddr_t newval;
1048 compat_size_t newlen;
1049 unsigned int __unused[4];
1050 };
1051
1052 #ifdef CONFIG_SYSCTL
1053
1054 asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
1055 {
1056 struct sysctl_args32 tmp;
1057 int error;
1058 size_t oldlen;
1059 size_t __user *oldlenp = NULL;
1060 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1061
1062 if (copy_from_user(&tmp, args, sizeof(tmp)))
1063 return -EFAULT;
1064
1065 if (tmp.oldval && tmp.oldlenp) {
1066 /* Duh, this is ugly and might not work if sysctl_args
1067 is in read-only memory, but do_sysctl does indirectly
1068 a lot of uaccess in both directions and we'd have to
1069 basically copy the whole sysctl.c here, and
1070 glibc's __sysctl uses rw memory for the structure
1071 anyway. */
1072 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1073 put_user(oldlen, (size_t __user *)addr))
1074 return -EFAULT;
1075 oldlenp = (size_t __user *)addr;
1076 }
1077
1078 lock_kernel();
1079 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1080 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1081 unlock_kernel();
1082 if (oldlenp) {
1083 if (!error) {
1084 if (get_user(oldlen, (size_t __user *)addr) ||
1085 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1086 error = -EFAULT;
1087 }
1088 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1089 }
1090 return error;
1091 }
1092
1093 #endif /* CONFIG_SYSCTL */
1094
1095 asmlinkage long sys32_newuname(struct new_utsname __user * name)
1096 {
1097 int ret = 0;
1098
1099 down_read(&uts_sem);
1100 if (copy_to_user(name,&system_utsname,sizeof *name))
1101 ret = -EFAULT;
1102 up_read(&uts_sem);
1103
1104 if (current->personality == PER_LINUX32 && !ret)
1105 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1106 ret = -EFAULT;
1107
1108 return ret;
1109 }
1110
1111 asmlinkage int sys32_personality(unsigned long personality)
1112 {
1113 int ret;
1114 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1115 personality = PER_LINUX32;
1116 ret = sys_personality(personality);
1117 if (ret == PER_LINUX32)
1118 ret = PER_LINUX;
1119 return ret;
1120 }
1121
1122 /* ustat compatibility */
1123 struct ustat32 {
1124 compat_daddr_t f_tfree;
1125 compat_ino_t f_tinode;
1126 char f_fname[6];
1127 char f_fpack[6];
1128 };
1129
1130 extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1131
1132 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1133 {
1134 int err;
1135 struct ustat tmp;
1136 struct ustat32 tmp32;
1137 mm_segment_t old_fs = get_fs();
1138
1139 set_fs(KERNEL_DS);
1140 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1141 set_fs (old_fs);
1142
1143 if (err)
1144 goto out;
1145
1146 memset(&tmp32,0,sizeof(struct ustat32));
1147 tmp32.f_tfree = tmp.f_tfree;
1148 tmp32.f_tinode = tmp.f_tinode;
1149
1150 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1151
1152 out:
1153 return err;
1154 }
1155
1156 /* Handle adjtimex compatibility. */
1157
1158 struct timex32 {
1159 u32 modes;
1160 s32 offset, freq, maxerror, esterror;
1161 s32 status, constant, precision, tolerance;
1162 struct compat_timeval time;
1163 s32 tick;
1164 s32 ppsfreq, jitter, shift, stabil;
1165 s32 jitcnt, calcnt, errcnt, stbcnt;
1166 s32 :32; s32 :32; s32 :32; s32 :32;
1167 s32 :32; s32 :32; s32 :32; s32 :32;
1168 s32 :32; s32 :32; s32 :32; s32 :32;
1169 };
1170
1171 extern int do_adjtimex(struct timex *);
1172
1173 asmlinkage int sys32_adjtimex(struct timex32 __user *utp)
1174 {
1175 struct timex txc;
1176 int ret;
1177
1178 memset(&txc, 0, sizeof(struct timex));
1179
1180 if (get_user(txc.modes, &utp->modes) ||
1181 __get_user(txc.offset, &utp->offset) ||
1182 __get_user(txc.freq, &utp->freq) ||
1183 __get_user(txc.maxerror, &utp->maxerror) ||
1184 __get_user(txc.esterror, &utp->esterror) ||
1185 __get_user(txc.status, &utp->status) ||
1186 __get_user(txc.constant, &utp->constant) ||
1187 __get_user(txc.precision, &utp->precision) ||
1188 __get_user(txc.tolerance, &utp->tolerance) ||
1189 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1190 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1191 __get_user(txc.tick, &utp->tick) ||
1192 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1193 __get_user(txc.jitter, &utp->jitter) ||
1194 __get_user(txc.shift, &utp->shift) ||
1195 __get_user(txc.stabil, &utp->stabil) ||
1196 __get_user(txc.jitcnt, &utp->jitcnt) ||
1197 __get_user(txc.calcnt, &utp->calcnt) ||
1198 __get_user(txc.errcnt, &utp->errcnt) ||
1199 __get_user(txc.stbcnt, &utp->stbcnt))
1200 return -EFAULT;
1201
1202 ret = do_adjtimex(&txc);
1203
1204 if (put_user(txc.modes, &utp->modes) ||
1205 __put_user(txc.offset, &utp->offset) ||
1206 __put_user(txc.freq, &utp->freq) ||
1207 __put_user(txc.maxerror, &utp->maxerror) ||
1208 __put_user(txc.esterror, &utp->esterror) ||
1209 __put_user(txc.status, &utp->status) ||
1210 __put_user(txc.constant, &utp->constant) ||
1211 __put_user(txc.precision, &utp->precision) ||
1212 __put_user(txc.tolerance, &utp->tolerance) ||
1213 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1214 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1215 __put_user(txc.tick, &utp->tick) ||
1216 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1217 __put_user(txc.jitter, &utp->jitter) ||
1218 __put_user(txc.shift, &utp->shift) ||
1219 __put_user(txc.stabil, &utp->stabil) ||
1220 __put_user(txc.jitcnt, &utp->jitcnt) ||
1221 __put_user(txc.calcnt, &utp->calcnt) ||
1222 __put_user(txc.errcnt, &utp->errcnt) ||
1223 __put_user(txc.stbcnt, &utp->stbcnt))
1224 ret = -EFAULT;
1225
1226 return ret;
1227 }
1228
1229 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1230 s32 count)
1231 {
1232 mm_segment_t old_fs = get_fs();
1233 int ret;
1234 off_t of;
1235
1236 if (offset && get_user(of, offset))
1237 return -EFAULT;
1238
1239 set_fs(KERNEL_DS);
1240 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1241 set_fs(old_fs);
1242
1243 if (offset && put_user(of, offset))
1244 return -EFAULT;
1245
1246 return ret;
1247 }
1248
1249 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1250 size_t count)
1251 {
1252 return sys_readahead(fd, merge_64(a2, a3), count);
1253 }
1254
1255 /* Argument list sizes for sys_socketcall */
1256 #define AL(x) ((x) * sizeof(unsigned int))
1257 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1258 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1259 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1260 #undef AL
1261
1262 /*
1263 * System call vectors.
1264 *
1265 * Argument checking cleaned up. Saved 20% in size.
1266 * This function doesn't need to set the kernel lock because
1267 * it is set by the callees.
1268 */
1269
1270 asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1271 {
1272 unsigned int a[6];
1273 unsigned int a0,a1;
1274 int err;
1275
1276 extern asmlinkage long sys_socket(int family, int type, int protocol);
1277 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1278 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1279 extern asmlinkage long sys_listen(int fd, int backlog);
1280 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1281 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1282 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1283 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1284 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1285 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1286 struct sockaddr __user *addr, int addr_len);
1287 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1288 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1289 struct sockaddr __user *addr, int __user *addr_len);
1290 extern asmlinkage long sys_shutdown(int fd, int how);
1291 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1292 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1293 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1294 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1295
1296
1297 if(call<1||call>SYS_RECVMSG)
1298 return -EINVAL;
1299
1300 /* copy_from_user should be SMP safe. */
1301 if (copy_from_user(a, args32, socketcall_nargs[call]))
1302 return -EFAULT;
1303
1304 a0=a[0];
1305 a1=a[1];
1306
1307 switch(call)
1308 {
1309 case SYS_SOCKET:
1310 err = sys_socket(a0,a1,a[2]);
1311 break;
1312 case SYS_BIND:
1313 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1314 break;
1315 case SYS_CONNECT:
1316 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1317 break;
1318 case SYS_LISTEN:
1319 err = sys_listen(a0,a1);
1320 break;
1321 case SYS_ACCEPT:
1322 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1323 break;
1324 case SYS_GETSOCKNAME:
1325 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1326 break;
1327 case SYS_GETPEERNAME:
1328 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1329 break;
1330 case SYS_SOCKETPAIR:
1331 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1332 break;
1333 case SYS_SEND:
1334 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1335 break;
1336 case SYS_SENDTO:
1337 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1338 (struct sockaddr __user *)A(a[4]), a[5]);
1339 break;
1340 case SYS_RECV:
1341 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1342 break;
1343 case SYS_RECVFROM:
1344 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1345 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1346 break;
1347 case SYS_SHUTDOWN:
1348 err = sys_shutdown(a0,a1);
1349 break;
1350 case SYS_SETSOCKOPT:
1351 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1352 break;
1353 case SYS_GETSOCKOPT:
1354 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1355 break;
1356 case SYS_SENDMSG:
1357 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1358 break;
1359 case SYS_RECVMSG:
1360 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1361 break;
1362 default:
1363 err = -EINVAL;
1364 break;
1365 }
1366 return err;
1367 }
1368
1369 struct sigevent32 {
1370 u32 sigev_value;
1371 u32 sigev_signo;
1372 u32 sigev_notify;
1373 u32 payload[(64 / 4) - 3];
1374 };
1375
1376 extern asmlinkage long
1377 sys_timer_create(clockid_t which_clock,
1378 struct sigevent __user *timer_event_spec,
1379 timer_t __user * created_timer_id);
1380
1381 long
1382 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1383 {
1384 struct sigevent __user *p = NULL;
1385 if (se32) {
1386 struct sigevent se;
1387 p = compat_alloc_user_space(sizeof(struct sigevent));
1388 memset(&se, 0, sizeof(struct sigevent));
1389 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1390 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1391 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1392 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1393 sizeof(se32->payload)) ||
1394 copy_to_user(p, &se, sizeof(se)))
1395 return -EFAULT;
1396 }
1397 return sys_timer_create(clock, p, timer_id);
1398 }
1399
1400 save_static_function(sys32_clone);
1401 __attribute_used__ noinline static int
1402 _sys32_clone(nabi_no_regargs struct pt_regs regs)
1403 {
1404 unsigned long clone_flags;
1405 unsigned long newsp;
1406 int __user *parent_tidptr, *child_tidptr;
1407
1408 clone_flags = regs.regs[4];
1409 newsp = regs.regs[5];
1410 if (!newsp)
1411 newsp = regs.regs[29];
1412 parent_tidptr = (int __user *) regs.regs[6];
1413
1414 /* Use __dummy4 instead of getting it off the stack, so that
1415 syscall() works. */
1416 child_tidptr = (int __user *) __dummy4;
1417 return do_fork(clone_flags, newsp, &regs, 0,
1418 parent_tidptr, child_tidptr);
1419 }
1420
1421 extern asmlinkage void sys_set_thread_area(u32 addr);
1422 asmlinkage void sys32_set_thread_area(u32 addr)
1423 {
1424 sys_set_thread_area(AA(addr));
1425 }
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