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[PATCH] briq_panel: read() and write() get __user pointers, damnit
[linux-2.6/verdex.git] / arch / mips / kernel / linux32.c
blob450ac592da576c8314a1cec7d0851d891e4cc1d7
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/compiler.h>
9 #include <linux/mm.h>
10 #include <linux/errno.h>
11 #include <linux/file.h>
12 #include <linux/smp_lock.h>
13 #include <linux/highuid.h>
14 #include <linux/dirent.h>
15 #include <linux/resource.h>
16 #include <linux/highmem.h>
17 #include <linux/time.h>
18 #include <linux/times.h>
19 #include <linux/poll.h>
20 #include <linux/slab.h>
21 #include <linux/skbuff.h>
22 #include <linux/filter.h>
23 #include <linux/shm.h>
24 #include <linux/sem.h>
25 #include <linux/msg.h>
26 #include <linux/icmpv6.h>
27 #include <linux/syscalls.h>
28 #include <linux/sysctl.h>
29 #include <linux/utime.h>
30 #include <linux/utsname.h>
31 #include <linux/personality.h>
32 #include <linux/dnotify.h>
33 #include <linux/module.h>
34 #include <linux/binfmts.h>
35 #include <linux/security.h>
36 #include <linux/compat.h>
37 #include <linux/vfs.h>
38
39 #include <net/sock.h>
40 #include <net/scm.h>
41
42 #include <asm/ipc.h>
43 #include <asm/sim.h>
44 #include <asm/uaccess.h>
45 #include <asm/mmu_context.h>
46 #include <asm/mman.h>
47
48 /* Use this to get at 32-bit user passed pointers. */
49 /* A() macro should be used for places where you e.g.
50 have some internal variable u32 and just want to get
51 rid of a compiler warning. AA() has to be used in
52 places where you want to convert a function argument
53 to 32bit pointer or when you e.g. access pt_regs
54 structure and want to consider 32bit registers only.
55 */
56 #define A(__x) ((unsigned long)(__x))
57 #define AA(__x) ((unsigned long)((int)__x))
58
59 #ifdef __MIPSEB__
60 #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
61 #endif
62 #ifdef __MIPSEL__
63 #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
64 #endif
65
66 /*
67 * Revalidate the inode. This is required for proper NFS attribute caching.
68 */
69
70 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
71 {
72 struct compat_stat tmp;
73
74 if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
75 return -EOVERFLOW;
76
77 memset(&tmp, 0, sizeof(tmp));
78 tmp.st_dev = new_encode_dev(stat->dev);
79 tmp.st_ino = stat->ino;
80 tmp.st_mode = stat->mode;
81 tmp.st_nlink = stat->nlink;
82 SET_UID(tmp.st_uid, stat->uid);
83 SET_GID(tmp.st_gid, stat->gid);
84 tmp.st_rdev = new_encode_dev(stat->rdev);
85 tmp.st_size = stat->size;
86 tmp.st_atime = stat->atime.tv_sec;
87 tmp.st_mtime = stat->mtime.tv_sec;
88 tmp.st_ctime = stat->ctime.tv_sec;
89 #ifdef STAT_HAVE_NSEC
90 tmp.st_atime_nsec = stat->atime.tv_nsec;
91 tmp.st_mtime_nsec = stat->mtime.tv_nsec;
92 tmp.st_ctime_nsec = stat->ctime.tv_nsec;
93 #endif
94 tmp.st_blocks = stat->blocks;
95 tmp.st_blksize = stat->blksize;
96 return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
97 }
98
99 asmlinkage unsigned long
100 sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
101 unsigned long flags, unsigned long fd, unsigned long pgoff)
102 {
103 struct file * file = NULL;
104 unsigned long error;
105
106 error = -EINVAL;
107 if (pgoff & (~PAGE_MASK >> 12))
108 goto out;
109 pgoff >>= PAGE_SHIFT-12;
110
111 if (!(flags & MAP_ANONYMOUS)) {
112 error = -EBADF;
113 file = fget(fd);
114 if (!file)
115 goto out;
116 }
117 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
118
119 down_write(&current->mm->mmap_sem);
120 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
121 up_write(&current->mm->mmap_sem);
122 if (file)
123 fput(file);
124
125 out:
126 return error;
127 }
128
129
130 asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
131 unsigned int low)
132 {
133 if ((int)high < 0)
134 return -EINVAL;
135 return sys_truncate(path, ((long) high << 32) | low);
136 }
137
138 asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
139 unsigned int low)
140 {
141 if ((int)high < 0)
142 return -EINVAL;
143 return sys_ftruncate(fd, ((long) high << 32) | low);
144 }
145
146 /*
147 * sys_execve() executes a new program.
148 */
149 asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
150 {
151 int error;
152 char * filename;
153
154 filename = getname(compat_ptr(regs.regs[4]));
155 error = PTR_ERR(filename);
156 if (IS_ERR(filename))
157 goto out;
158 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
159 compat_ptr(regs.regs[6]), &regs);
160 putname(filename);
161
162 out:
163 return error;
164 }
165
166 asmlinkage long
167 sysn32_waitid(int which, compat_pid_t pid,
168 siginfo_t __user *uinfo, int options,
169 struct compat_rusage __user *uru)
170 {
171 struct rusage ru;
172 long ret;
173 mm_segment_t old_fs = get_fs();
174 int si_signo;
175
176 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
177 return -EFAULT;
178
179 set_fs (KERNEL_DS);
180 ret = sys_waitid(which, pid, uinfo, options,
181 uru ? (struct rusage __user *) &ru : NULL);
182 set_fs (old_fs);
183
184 if (__get_user(si_signo, &uinfo->si_signo))
185 return -EFAULT;
186 if (ret < 0 || si_signo == 0)
187 return ret;
188
189 if (uru)
190 ret = put_compat_rusage(&ru, uru);
191 return ret;
192 }
193
194 struct sysinfo32 {
195 s32 uptime;
196 u32 loads[3];
197 u32 totalram;
198 u32 freeram;
199 u32 sharedram;
200 u32 bufferram;
201 u32 totalswap;
202 u32 freeswap;
203 u16 procs;
204 u32 totalhigh;
205 u32 freehigh;
206 u32 mem_unit;
207 char _f[8];
208 };
209
210 asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
211 {
212 struct sysinfo s;
213 int ret, err;
214 mm_segment_t old_fs = get_fs ();
215
216 set_fs (KERNEL_DS);
217 ret = sys_sysinfo((struct sysinfo __user *)&s);
218 set_fs (old_fs);
219 err = put_user (s.uptime, &info->uptime);
220 err |= __put_user (s.loads[0], &info->loads[0]);
221 err |= __put_user (s.loads[1], &info->loads[1]);
222 err |= __put_user (s.loads[2], &info->loads[2]);
223 err |= __put_user (s.totalram, &info->totalram);
224 err |= __put_user (s.freeram, &info->freeram);
225 err |= __put_user (s.sharedram, &info->sharedram);
226 err |= __put_user (s.bufferram, &info->bufferram);
227 err |= __put_user (s.totalswap, &info->totalswap);
228 err |= __put_user (s.freeswap, &info->freeswap);
229 err |= __put_user (s.procs, &info->procs);
230 err |= __put_user (s.totalhigh, &info->totalhigh);
231 err |= __put_user (s.freehigh, &info->freehigh);
232 err |= __put_user (s.mem_unit, &info->mem_unit);
233 if (err)
234 return -EFAULT;
235 return ret;
236 }
237
238 #define RLIM_INFINITY32 0x7fffffff
239 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
240
241 struct rlimit32 {
242 int rlim_cur;
243 int rlim_max;
244 };
245
246 #ifdef __MIPSEB__
247 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
248 int length_hi, int length_lo)
249 #endif
250 #ifdef __MIPSEL__
251 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
252 int length_lo, int length_hi)
253 #endif
254 {
255 loff_t length;
256
257 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
258
259 return sys_truncate(path, length);
260 }
261
262 #ifdef __MIPSEB__
263 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
264 int length_hi, int length_lo)
265 #endif
266 #ifdef __MIPSEL__
267 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
268 int length_lo, int length_hi)
269 #endif
270 {
271 loff_t length;
272
273 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
274
275 return sys_ftruncate(fd, length);
276 }
277
278 static inline long
279 get_tv32(struct timeval *o, struct compat_timeval __user *i)
280 {
281 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
282 (__get_user(o->tv_sec, &i->tv_sec) |
283 __get_user(o->tv_usec, &i->tv_usec)));
284 }
285
286 static inline long
287 put_tv32(struct compat_timeval __user *o, struct timeval *i)
288 {
289 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
290 (__put_user(i->tv_sec, &o->tv_sec) |
291 __put_user(i->tv_usec, &o->tv_usec)));
292 }
293
294 extern struct timezone sys_tz;
295
296 asmlinkage int
297 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
298 {
299 if (tv) {
300 struct timeval ktv;
301 do_gettimeofday(&ktv);
302 if (put_tv32(tv, &ktv))
303 return -EFAULT;
304 }
305 if (tz) {
306 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
307 return -EFAULT;
308 }
309 return 0;
310 }
311
312 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
313 {
314 long usec;
315
316 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
317 return -EFAULT;
318 if (__get_user(o->tv_sec, &i->tv_sec))
319 return -EFAULT;
320 if (__get_user(usec, &i->tv_usec))
321 return -EFAULT;
322 o->tv_nsec = usec * 1000;
323 return 0;
324 }
325
326 asmlinkage int
327 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
328 {
329 struct timespec kts;
330 struct timezone ktz;
331
332 if (tv) {
333 if (get_ts32(&kts, tv))
334 return -EFAULT;
335 }
336 if (tz) {
337 if (copy_from_user(&ktz, tz, sizeof(ktz)))
338 return -EFAULT;
339 }
340
341 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
342 }
343
344 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
345 unsigned int offset_low, loff_t __user * result,
346 unsigned int origin)
347 {
348 return sys_llseek(fd, offset_high, offset_low, result, origin);
349 }
350
351 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
352 lseek back to original location. They fail just like lseek does on
353 non-seekable files. */
354
355 asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
356 size_t count, u32 unused, u64 a4, u64 a5)
357 {
358 return sys_pread64(fd, buf, count, merge_64(a4, a5));
359 }
360
361 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
362 size_t count, u32 unused, u64 a4, u64 a5)
363 {
364 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
365 }
366
367 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
368 struct compat_timespec __user *interval)
369 {
370 struct timespec t;
371 int ret;
372 mm_segment_t old_fs = get_fs ();
373
374 set_fs (KERNEL_DS);
375 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
376 set_fs (old_fs);
377 if (put_user (t.tv_sec, &interval->tv_sec) ||
378 __put_user (t.tv_nsec, &interval->tv_nsec))
379 return -EFAULT;
380 return ret;
381 }
382
383 struct msgbuf32 { s32 mtype; char mtext[1]; };
384
385 struct ipc_perm32
386 {
387 key_t key;
388 __compat_uid_t uid;
389 __compat_gid_t gid;
390 __compat_uid_t cuid;
391 __compat_gid_t cgid;
392 compat_mode_t mode;
393 unsigned short seq;
394 };
395
396 struct ipc64_perm32 {
397 key_t key;
398 __compat_uid_t uid;
399 __compat_gid_t gid;
400 __compat_uid_t cuid;
401 __compat_gid_t cgid;
402 compat_mode_t mode;
403 unsigned short seq;
404 unsigned short __pad1;
405 unsigned int __unused1;
406 unsigned int __unused2;
407 };
408
409 struct semid_ds32 {
410 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
411 compat_time_t sem_otime; /* last semop time */
412 compat_time_t sem_ctime; /* last change time */
413 u32 sem_base; /* ptr to first semaphore in array */
414 u32 sem_pending; /* pending operations to be processed */
415 u32 sem_pending_last; /* last pending operation */
416 u32 undo; /* undo requests on this array */
417 unsigned short sem_nsems; /* no. of semaphores in array */
418 };
419
420 struct semid64_ds32 {
421 struct ipc64_perm32 sem_perm;
422 compat_time_t sem_otime;
423 compat_time_t sem_ctime;
424 unsigned int sem_nsems;
425 unsigned int __unused1;
426 unsigned int __unused2;
427 };
428
429 struct msqid_ds32
430 {
431 struct ipc_perm32 msg_perm;
432 u32 msg_first;
433 u32 msg_last;
434 compat_time_t msg_stime;
435 compat_time_t msg_rtime;
436 compat_time_t msg_ctime;
437 u32 wwait;
438 u32 rwait;
439 unsigned short msg_cbytes;
440 unsigned short msg_qnum;
441 unsigned short msg_qbytes;
442 compat_ipc_pid_t msg_lspid;
443 compat_ipc_pid_t msg_lrpid;
444 };
445
446 struct msqid64_ds32 {
447 struct ipc64_perm32 msg_perm;
448 compat_time_t msg_stime;
449 unsigned int __unused1;
450 compat_time_t msg_rtime;
451 unsigned int __unused2;
452 compat_time_t msg_ctime;
453 unsigned int __unused3;
454 unsigned int msg_cbytes;
455 unsigned int msg_qnum;
456 unsigned int msg_qbytes;
457 compat_pid_t msg_lspid;
458 compat_pid_t msg_lrpid;
459 unsigned int __unused4;
460 unsigned int __unused5;
461 };
462
463 struct shmid_ds32 {
464 struct ipc_perm32 shm_perm;
465 int shm_segsz;
466 compat_time_t shm_atime;
467 compat_time_t shm_dtime;
468 compat_time_t shm_ctime;
469 compat_ipc_pid_t shm_cpid;
470 compat_ipc_pid_t shm_lpid;
471 unsigned short shm_nattch;
472 };
473
474 struct shmid64_ds32 {
475 struct ipc64_perm32 shm_perm;
476 compat_size_t shm_segsz;
477 compat_time_t shm_atime;
478 compat_time_t shm_dtime;
479 compat_time_t shm_ctime;
480 compat_pid_t shm_cpid;
481 compat_pid_t shm_lpid;
482 unsigned int shm_nattch;
483 unsigned int __unused1;
484 unsigned int __unused2;
485 };
486
487 struct ipc_kludge32 {
488 u32 msgp;
489 s32 msgtyp;
490 };
491
492 static int
493 do_sys32_semctl(int first, int second, int third, void __user *uptr)
494 {
495 union semun fourth;
496 u32 pad;
497 int err, err2;
498 struct semid64_ds s;
499 mm_segment_t old_fs;
500
501 if (!uptr)
502 return -EINVAL;
503 err = -EFAULT;
504 if (get_user (pad, (u32 __user *)uptr))
505 return err;
506 if ((third & ~IPC_64) == SETVAL)
507 fourth.val = (int)pad;
508 else
509 fourth.__pad = (void __user *)A(pad);
510 switch (third & ~IPC_64) {
511 case IPC_INFO:
512 case IPC_RMID:
513 case IPC_SET:
514 case SEM_INFO:
515 case GETVAL:
516 case GETPID:
517 case GETNCNT:
518 case GETZCNT:
519 case GETALL:
520 case SETVAL:
521 case SETALL:
522 err = sys_semctl (first, second, third, fourth);
523 break;
524
525 case IPC_STAT:
526 case SEM_STAT:
527 fourth.__pad = (struct semid64_ds __user *)&s;
528 old_fs = get_fs();
529 set_fs(KERNEL_DS);
530 err = sys_semctl(first, second, third | IPC_64, fourth);
531 set_fs(old_fs);
532
533 if (third & IPC_64) {
534 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
535
536 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
537 err = -EFAULT;
538 break;
539 }
540 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
541 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
542 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
543 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
544 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
545 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
546 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
547 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
548 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
549 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
550 } else {
551 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
552
553 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
554 err = -EFAULT;
555 break;
556 }
557 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
558 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
559 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
560 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
561 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
562 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
563 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
564 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
565 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
566 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
567 }
568 if (err2)
569 err = -EFAULT;
570 break;
571
572 default:
573 err = - EINVAL;
574 break;
575 }
576
577 return err;
578 }
579
580 static int
581 do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
582 {
583 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
584 struct msgbuf *p;
585 mm_segment_t old_fs;
586 int err;
587
588 if (second < 0)
589 return -EINVAL;
590 p = kmalloc (second + sizeof (struct msgbuf)
591 + 4, GFP_USER);
592 if (!p)
593 return -ENOMEM;
594 err = get_user (p->mtype, &up->mtype);
595 if (err)
596 goto out;
597 err |= __copy_from_user (p->mtext, &up->mtext, second);
598 if (err)
599 goto out;
600 old_fs = get_fs ();
601 set_fs (KERNEL_DS);
602 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
603 set_fs (old_fs);
604 out:
605 kfree (p);
606
607 return err;
608 }
609
610 static int
611 do_sys32_msgrcv (int first, int second, int msgtyp, int third,
612 int version, void __user *uptr)
613 {
614 struct msgbuf32 __user *up;
615 struct msgbuf *p;
616 mm_segment_t old_fs;
617 int err;
618
619 if (!version) {
620 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
621 struct ipc_kludge32 ipck;
622
623 err = -EINVAL;
624 if (!uptr)
625 goto out;
626 err = -EFAULT;
627 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
628 goto out;
629 uptr = (void __user *)AA(ipck.msgp);
630 msgtyp = ipck.msgtyp;
631 }
632
633 if (second < 0)
634 return -EINVAL;
635 err = -ENOMEM;
636 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
637 if (!p)
638 goto out;
639 old_fs = get_fs ();
640 set_fs (KERNEL_DS);
641 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
642 set_fs (old_fs);
643 if (err < 0)
644 goto free_then_out;
645 up = (struct msgbuf32 __user *)uptr;
646 if (put_user (p->mtype, &up->mtype) ||
647 __copy_to_user (&up->mtext, p->mtext, err))
648 err = -EFAULT;
649 free_then_out:
650 kfree (p);
651 out:
652 return err;
653 }
654
655 static int
656 do_sys32_msgctl (int first, int second, void __user *uptr)
657 {
658 int err = -EINVAL, err2;
659 struct msqid64_ds m;
660 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
661 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
662 mm_segment_t old_fs;
663
664 switch (second & ~IPC_64) {
665 case IPC_INFO:
666 case IPC_RMID:
667 case MSG_INFO:
668 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
669 break;
670
671 case IPC_SET:
672 if (second & IPC_64) {
673 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
674 err = -EFAULT;
675 break;
676 }
677 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
678 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
679 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
680 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
681 } else {
682 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
683 err = -EFAULT;
684 break;
685 }
686 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
687 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
688 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
689 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
690 }
691 if (err)
692 break;
693 old_fs = get_fs();
694 set_fs(KERNEL_DS);
695 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
696 set_fs(old_fs);
697 break;
698
699 case IPC_STAT:
700 case MSG_STAT:
701 old_fs = get_fs();
702 set_fs(KERNEL_DS);
703 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
704 set_fs(old_fs);
705 if (second & IPC_64) {
706 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
707 err = -EFAULT;
708 break;
709 }
710 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
711 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
712 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
713 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
714 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
715 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
716 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
717 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
718 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
719 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
720 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
721 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
722 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
723 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
724 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
725 if (err2)
726 err = -EFAULT;
727 } else {
728 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
729 err = -EFAULT;
730 break;
731 }
732 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
733 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
734 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
735 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
736 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
737 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
738 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
739 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
740 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
741 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
742 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
743 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
744 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
745 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
746 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
747 if (err2)
748 err = -EFAULT;
749 }
750 break;
751 }
752
753 return err;
754 }
755
756 static int
757 do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
758 {
759 unsigned long raddr;
760 u32 __user *uaddr = (u32 __user *)A((u32)third);
761 int err = -EINVAL;
762
763 if (version == 1)
764 return err;
765 err = do_shmat (first, uptr, second, &raddr);
766 if (err)
767 return err;
768 err = put_user (raddr, uaddr);
769 return err;
770 }
771
772 struct shm_info32 {
773 int used_ids;
774 u32 shm_tot, shm_rss, shm_swp;
775 u32 swap_attempts, swap_successes;
776 };
777
778 static int
779 do_sys32_shmctl (int first, int second, void __user *uptr)
780 {
781 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
782 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
783 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
784 int err = -EFAULT, err2;
785 struct shmid64_ds s64;
786 mm_segment_t old_fs;
787 struct shm_info si;
788 struct shmid_ds s;
789
790 switch (second & ~IPC_64) {
791 case IPC_INFO:
792 second = IPC_INFO; /* So that we don't have to translate it */
793 case IPC_RMID:
794 case SHM_LOCK:
795 case SHM_UNLOCK:
796 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
797 break;
798 case IPC_SET:
799 if (second & IPC_64) {
800 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
801 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
802 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
803 } else {
804 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
805 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
806 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
807 }
808 if (err)
809 break;
810 old_fs = get_fs();
811 set_fs(KERNEL_DS);
812 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
813 set_fs(old_fs);
814 break;
815
816 case IPC_STAT:
817 case SHM_STAT:
818 old_fs = get_fs();
819 set_fs(KERNEL_DS);
820 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
821 set_fs(old_fs);
822 if (err < 0)
823 break;
824 if (second & IPC_64) {
825 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
826 err = -EFAULT;
827 break;
828 }
829 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
830 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
831 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
832 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
833 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
834 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
835 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
836 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
837 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
838 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
839 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
840 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
841 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
842 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
843 } else {
844 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
845 err = -EFAULT;
846 break;
847 }
848 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
849 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
850 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
851 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
852 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
853 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
854 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
855 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
856 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
857 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
858 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
859 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
860 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
861 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
862 }
863 if (err2)
864 err = -EFAULT;
865 break;
866
867 case SHM_INFO:
868 old_fs = get_fs();
869 set_fs(KERNEL_DS);
870 err = sys_shmctl(first, second, (void __user *)&si);
871 set_fs(old_fs);
872 if (err < 0)
873 break;
874 err2 = put_user(si.used_ids, &uip->used_ids);
875 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
876 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
877 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
878 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
879 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
880 if (err2)
881 err = -EFAULT;
882 break;
883
884 default:
885 err = -EINVAL;
886 break;
887 }
888
889 return err;
890 }
891
892 static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
893 const struct compat_timespec __user *timeout32)
894 {
895 struct compat_timespec t32;
896 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
897
898 if (copy_from_user(&t32, timeout32, sizeof(t32)))
899 return -EFAULT;
900
901 if (put_user(t32.tv_sec, &t64->tv_sec) ||
902 put_user(t32.tv_nsec, &t64->tv_nsec))
903 return -EFAULT;
904
905 return sys_semtimedop(semid, tsems, nsems, t64);
906 }
907
908 asmlinkage long
909 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
910 {
911 int version, err;
912
913 version = call >> 16; /* hack for backward compatibility */
914 call &= 0xffff;
915
916 switch (call) {
917 case SEMOP:
918 /* struct sembuf is the same on 32 and 64bit :)) */
919 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
920 NULL);
921 break;
922 case SEMTIMEDOP:
923 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
924 (const struct compat_timespec __user *)AA(fifth));
925 break;
926 case SEMGET:
927 err = sys_semget (first, second, third);
928 break;
929 case SEMCTL:
930 err = do_sys32_semctl (first, second, third,
931 (void __user *)AA(ptr));
932 break;
933
934 case MSGSND:
935 err = do_sys32_msgsnd (first, second, third,
936 (void __user *)AA(ptr));
937 break;
938 case MSGRCV:
939 err = do_sys32_msgrcv (first, second, fifth, third,
940 version, (void __user *)AA(ptr));
941 break;
942 case MSGGET:
943 err = sys_msgget ((key_t) first, second);
944 break;
945 case MSGCTL:
946 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
947 break;
948
949 case SHMAT:
950 err = do_sys32_shmat (first, second, third,
951 version, (void __user *)AA(ptr));
952 break;
953 case SHMDT:
954 err = sys_shmdt ((char __user *)A(ptr));
955 break;
956 case SHMGET:
957 err = sys_shmget (first, (unsigned)second, third);
958 break;
959 case SHMCTL:
960 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
961 break;
962 default:
963 err = -EINVAL;
964 break;
965 }
966
967 return err;
968 }
969
970 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
971 int shmflg, int32_t __user *addr)
972 {
973 unsigned long raddr;
974 int err;
975
976 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
977 if (err)
978 return err;
979
980 return put_user(raddr, addr);
981 }
982
983 struct sysctl_args32
984 {
985 compat_caddr_t name;
986 int nlen;
987 compat_caddr_t oldval;
988 compat_caddr_t oldlenp;
989 compat_caddr_t newval;
990 compat_size_t newlen;
991 unsigned int __unused[4];
992 };
993
994 #ifdef CONFIG_SYSCTL
995
996 asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
997 {
998 struct sysctl_args32 tmp;
999 int error;
1000 size_t oldlen;
1001 size_t __user *oldlenp = NULL;
1002 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1003
1004 if (copy_from_user(&tmp, args, sizeof(tmp)))
1005 return -EFAULT;
1006
1007 if (tmp.oldval && tmp.oldlenp) {
1008 /* Duh, this is ugly and might not work if sysctl_args
1009 is in read-only memory, but do_sysctl does indirectly
1010 a lot of uaccess in both directions and we'd have to
1011 basically copy the whole sysctl.c here, and
1012 glibc's __sysctl uses rw memory for the structure
1013 anyway. */
1014 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1015 put_user(oldlen, (size_t __user *)addr))
1016 return -EFAULT;
1017 oldlenp = (size_t __user *)addr;
1018 }
1019
1020 lock_kernel();
1021 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1022 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1023 unlock_kernel();
1024 if (oldlenp) {
1025 if (!error) {
1026 if (get_user(oldlen, (size_t __user *)addr) ||
1027 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1028 error = -EFAULT;
1029 }
1030 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1031 }
1032 return error;
1033 }
1034
1035 #endif /* CONFIG_SYSCTL */
1036
1037 asmlinkage long sys32_newuname(struct new_utsname __user * name)
1038 {
1039 int ret = 0;
1040
1041 down_read(&uts_sem);
1042 if (copy_to_user(name,&system_utsname,sizeof *name))
1043 ret = -EFAULT;
1044 up_read(&uts_sem);
1045
1046 if (current->personality == PER_LINUX32 && !ret)
1047 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1048 ret = -EFAULT;
1049
1050 return ret;
1051 }
1052
1053 asmlinkage int sys32_personality(unsigned long personality)
1054 {
1055 int ret;
1056 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1057 personality = PER_LINUX32;
1058 ret = sys_personality(personality);
1059 if (ret == PER_LINUX32)
1060 ret = PER_LINUX;
1061 return ret;
1062 }
1063
1064 /* ustat compatibility */
1065 struct ustat32 {
1066 compat_daddr_t f_tfree;
1067 compat_ino_t f_tinode;
1068 char f_fname[6];
1069 char f_fpack[6];
1070 };
1071
1072 extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1073
1074 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1075 {
1076 int err;
1077 struct ustat tmp;
1078 struct ustat32 tmp32;
1079 mm_segment_t old_fs = get_fs();
1080
1081 set_fs(KERNEL_DS);
1082 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1083 set_fs (old_fs);
1084
1085 if (err)
1086 goto out;
1087
1088 memset(&tmp32,0,sizeof(struct ustat32));
1089 tmp32.f_tfree = tmp.f_tfree;
1090 tmp32.f_tinode = tmp.f_tinode;
1091
1092 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1093
1094 out:
1095 return err;
1096 }
1097
1098 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1099 s32 count)
1100 {
1101 mm_segment_t old_fs = get_fs();
1102 int ret;
1103 off_t of;
1104
1105 if (offset && get_user(of, offset))
1106 return -EFAULT;
1107
1108 set_fs(KERNEL_DS);
1109 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1110 set_fs(old_fs);
1111
1112 if (offset && put_user(of, offset))
1113 return -EFAULT;
1114
1115 return ret;
1116 }
1117
1118 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1119 size_t count)
1120 {
1121 return sys_readahead(fd, merge_64(a2, a3), count);
1122 }
1123
1124 asmlinkage long sys32_sync_file_range(int fd, int __pad,
1125 unsigned long a2, unsigned long a3,
1126 unsigned long a4, unsigned long a5,
1127 int flags)
1128 {
1129 return sys_sync_file_range(fd,
1130 merge_64(a2, a3), merge_64(a4, a5),
1131 flags);
1132 }
1133
1134 /* Argument list sizes for sys_socketcall */
1135 #define AL(x) ((x) * sizeof(unsigned int))
1136 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1137 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1138 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1139 #undef AL
1140
1141 /*
1142 * System call vectors.
1143 *
1144 * Argument checking cleaned up. Saved 20% in size.
1145 * This function doesn't need to set the kernel lock because
1146 * it is set by the callees.
1147 */
1148
1149 asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1150 {
1151 unsigned int a[6];
1152 unsigned int a0,a1;
1153 int err;
1154
1155 extern asmlinkage long sys_socket(int family, int type, int protocol);
1156 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1157 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1158 extern asmlinkage long sys_listen(int fd, int backlog);
1159 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1160 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1161 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1162 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1163 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1164 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1165 struct sockaddr __user *addr, int addr_len);
1166 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1167 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1168 struct sockaddr __user *addr, int __user *addr_len);
1169 extern asmlinkage long sys_shutdown(int fd, int how);
1170 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1171 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1172 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1173 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1174
1175
1176 if(call<1||call>SYS_RECVMSG)
1177 return -EINVAL;
1178
1179 /* copy_from_user should be SMP safe. */
1180 if (copy_from_user(a, args32, socketcall_nargs[call]))
1181 return -EFAULT;
1182
1183 a0=a[0];
1184 a1=a[1];
1185
1186 switch(call)
1187 {
1188 case SYS_SOCKET:
1189 err = sys_socket(a0,a1,a[2]);
1190 break;
1191 case SYS_BIND:
1192 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1193 break;
1194 case SYS_CONNECT:
1195 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1196 break;
1197 case SYS_LISTEN:
1198 err = sys_listen(a0,a1);
1199 break;
1200 case SYS_ACCEPT:
1201 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1202 break;
1203 case SYS_GETSOCKNAME:
1204 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1205 break;
1206 case SYS_GETPEERNAME:
1207 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1208 break;
1209 case SYS_SOCKETPAIR:
1210 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1211 break;
1212 case SYS_SEND:
1213 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1214 break;
1215 case SYS_SENDTO:
1216 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1217 (struct sockaddr __user *)A(a[4]), a[5]);
1218 break;
1219 case SYS_RECV:
1220 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1221 break;
1222 case SYS_RECVFROM:
1223 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1224 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1225 break;
1226 case SYS_SHUTDOWN:
1227 err = sys_shutdown(a0,a1);
1228 break;
1229 case SYS_SETSOCKOPT:
1230 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1231 break;
1232 case SYS_GETSOCKOPT:
1233 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1234 break;
1235 case SYS_SENDMSG:
1236 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1237 break;
1238 case SYS_RECVMSG:
1239 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1240 break;
1241 default:
1242 err = -EINVAL;
1243 break;
1244 }
1245 return err;
1246 }
1247
1248 struct sigevent32 {
1249 u32 sigev_value;
1250 u32 sigev_signo;
1251 u32 sigev_notify;
1252 u32 payload[(64 / 4) - 3];
1253 };
1254
1255 extern asmlinkage long
1256 sys_timer_create(clockid_t which_clock,
1257 struct sigevent __user *timer_event_spec,
1258 timer_t __user * created_timer_id);
1259
1260 long
1261 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1262 {
1263 struct sigevent __user *p = NULL;
1264 if (se32) {
1265 struct sigevent se;
1266 p = compat_alloc_user_space(sizeof(struct sigevent));
1267 memset(&se, 0, sizeof(struct sigevent));
1268 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1269 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1270 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1271 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1272 sizeof(se32->payload)) ||
1273 copy_to_user(p, &se, sizeof(se)))
1274 return -EFAULT;
1275 }
1276 return sys_timer_create(clock, p, timer_id);
1277 }
1278
1279 save_static_function(sys32_clone);
1280 __attribute_used__ noinline static int
1281 _sys32_clone(nabi_no_regargs struct pt_regs regs)
1282 {
1283 unsigned long clone_flags;
1284 unsigned long newsp;
1285 int __user *parent_tidptr, *child_tidptr;
1286
1287 clone_flags = regs.regs[4];
1288 newsp = regs.regs[5];
1289 if (!newsp)
1290 newsp = regs.regs[29];
1291 parent_tidptr = (int __user *) regs.regs[6];
1292
1293 /* Use __dummy4 instead of getting it off the stack, so that
1294 syscall() works. */
1295 child_tidptr = (int __user *) __dummy4;
1296 return do_fork(clone_flags, newsp, &regs, 0,
1297 parent_tidptr, child_tidptr);
1298 }
1299
1300 extern asmlinkage void sys_set_thread_area(u32 addr);
1301 asmlinkage void sys32_set_thread_area(u32 addr)
1302 {
1303 sys_set_thread_area(AA(addr));
1304 }
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