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[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / mips / kernel / linux32.c
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 if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
81 return -EOVERFLOW;
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 (pgoff & (~PAGE_MASK >> 12))
110 goto out;
111 pgoff >>= PAGE_SHIFT-12;
112
113 if (!(flags & MAP_ANONYMOUS)) {
114 error = -EBADF;
115 file = fget(fd);
116 if (!file)
117 goto out;
118 }
119 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
120
121 down_write(&current->mm->mmap_sem);
122 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
123 up_write(&current->mm->mmap_sem);
124 if (file)
125 fput(file);
126
127 out:
128 return error;
129 }
130
131
132 asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
133 unsigned int low)
134 {
135 if ((int)high < 0)
136 return -EINVAL;
137 return sys_truncate(path, ((long) high << 32) | low);
138 }
139
140 asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
141 unsigned int low)
142 {
143 if ((int)high < 0)
144 return -EINVAL;
145 return sys_ftruncate(fd, ((long) high << 32) | low);
146 }
147
148 /*
149 * sys_execve() executes a new program.
150 */
151 asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
152 {
153 int error;
154 char * filename;
155
156 filename = getname(compat_ptr(regs.regs[4]));
157 error = PTR_ERR(filename);
158 if (IS_ERR(filename))
159 goto out;
160 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
161 compat_ptr(regs.regs[6]), &regs);
162 putname(filename);
163
164 out:
165 return error;
166 }
167
168 asmlinkage long
169 sysn32_waitid(int which, compat_pid_t pid,
170 siginfo_t __user *uinfo, int options,
171 struct compat_rusage __user *uru)
172 {
173 struct rusage ru;
174 long ret;
175 mm_segment_t old_fs = get_fs();
176 int si_signo;
177
178 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
179 return -EFAULT;
180
181 set_fs (KERNEL_DS);
182 ret = sys_waitid(which, pid, uinfo, options,
183 uru ? (struct rusage __user *) &ru : NULL);
184 set_fs (old_fs);
185
186 if (__get_user(si_signo, &uinfo->si_signo))
187 return -EFAULT;
188 if (ret < 0 || si_signo == 0)
189 return ret;
190
191 if (uru)
192 ret = put_compat_rusage(&ru, uru);
193 return ret;
194 }
195
196 struct sysinfo32 {
197 s32 uptime;
198 u32 loads[3];
199 u32 totalram;
200 u32 freeram;
201 u32 sharedram;
202 u32 bufferram;
203 u32 totalswap;
204 u32 freeswap;
205 u16 procs;
206 u32 totalhigh;
207 u32 freehigh;
208 u32 mem_unit;
209 char _f[8];
210 };
211
212 asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
213 {
214 struct sysinfo s;
215 int ret, err;
216 mm_segment_t old_fs = get_fs ();
217
218 set_fs (KERNEL_DS);
219 ret = sys_sysinfo((struct sysinfo __user *)&s);
220 set_fs (old_fs);
221 err = put_user (s.uptime, &info->uptime);
222 err |= __put_user (s.loads[0], &info->loads[0]);
223 err |= __put_user (s.loads[1], &info->loads[1]);
224 err |= __put_user (s.loads[2], &info->loads[2]);
225 err |= __put_user (s.totalram, &info->totalram);
226 err |= __put_user (s.freeram, &info->freeram);
227 err |= __put_user (s.sharedram, &info->sharedram);
228 err |= __put_user (s.bufferram, &info->bufferram);
229 err |= __put_user (s.totalswap, &info->totalswap);
230 err |= __put_user (s.freeswap, &info->freeswap);
231 err |= __put_user (s.procs, &info->procs);
232 err |= __put_user (s.totalhigh, &info->totalhigh);
233 err |= __put_user (s.freehigh, &info->freehigh);
234 err |= __put_user (s.mem_unit, &info->mem_unit);
235 if (err)
236 return -EFAULT;
237 return ret;
238 }
239
240 #define RLIM_INFINITY32 0x7fffffff
241 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
242
243 struct rlimit32 {
244 int rlim_cur;
245 int rlim_max;
246 };
247
248 #ifdef __MIPSEB__
249 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
250 int length_hi, int length_lo)
251 #endif
252 #ifdef __MIPSEL__
253 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
254 int length_lo, int length_hi)
255 #endif
256 {
257 loff_t length;
258
259 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
260
261 return sys_truncate(path, length);
262 }
263
264 #ifdef __MIPSEB__
265 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
266 int length_hi, int length_lo)
267 #endif
268 #ifdef __MIPSEL__
269 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
270 int length_lo, int length_hi)
271 #endif
272 {
273 loff_t length;
274
275 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
276
277 return sys_ftruncate(fd, length);
278 }
279
280 static inline long
281 get_tv32(struct timeval *o, struct compat_timeval __user *i)
282 {
283 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
284 (__get_user(o->tv_sec, &i->tv_sec) |
285 __get_user(o->tv_usec, &i->tv_usec)));
286 }
287
288 static inline long
289 put_tv32(struct compat_timeval __user *o, struct timeval *i)
290 {
291 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
292 (__put_user(i->tv_sec, &o->tv_sec) |
293 __put_user(i->tv_usec, &o->tv_usec)));
294 }
295
296 extern struct timezone sys_tz;
297
298 asmlinkage int
299 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
300 {
301 if (tv) {
302 struct timeval ktv;
303 do_gettimeofday(&ktv);
304 if (put_tv32(tv, &ktv))
305 return -EFAULT;
306 }
307 if (tz) {
308 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
309 return -EFAULT;
310 }
311 return 0;
312 }
313
314 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
315 {
316 long usec;
317
318 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
319 return -EFAULT;
320 if (__get_user(o->tv_sec, &i->tv_sec))
321 return -EFAULT;
322 if (__get_user(usec, &i->tv_usec))
323 return -EFAULT;
324 o->tv_nsec = usec * 1000;
325 return 0;
326 }
327
328 asmlinkage int
329 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
330 {
331 struct timespec kts;
332 struct timezone ktz;
333
334 if (tv) {
335 if (get_ts32(&kts, tv))
336 return -EFAULT;
337 }
338 if (tz) {
339 if (copy_from_user(&ktz, tz, sizeof(ktz)))
340 return -EFAULT;
341 }
342
343 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
344 }
345
346 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
347 unsigned int offset_low, loff_t __user * result,
348 unsigned int origin)
349 {
350 return sys_llseek(fd, offset_high, offset_low, result, origin);
351 }
352
353 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
354 lseek back to original location. They fail just like lseek does on
355 non-seekable files. */
356
357 asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
358 size_t count, u32 unused, u64 a4, u64 a5)
359 {
360 return sys_pread64(fd, buf, count, merge_64(a4, a5));
361 }
362
363 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
364 size_t count, u32 unused, u64 a4, u64 a5)
365 {
366 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
367 }
368
369 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
370 struct compat_timespec __user *interval)
371 {
372 struct timespec t;
373 int ret;
374 mm_segment_t old_fs = get_fs ();
375
376 set_fs (KERNEL_DS);
377 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
378 set_fs (old_fs);
379 if (put_user (t.tv_sec, &interval->tv_sec) ||
380 __put_user (t.tv_nsec, &interval->tv_nsec))
381 return -EFAULT;
382 return ret;
383 }
384
385 struct msgbuf32 { s32 mtype; char mtext[1]; };
386
387 struct ipc_perm32
388 {
389 key_t key;
390 __compat_uid_t uid;
391 __compat_gid_t gid;
392 __compat_uid_t cuid;
393 __compat_gid_t cgid;
394 compat_mode_t mode;
395 unsigned short seq;
396 };
397
398 struct ipc64_perm32 {
399 key_t key;
400 __compat_uid_t uid;
401 __compat_gid_t gid;
402 __compat_uid_t cuid;
403 __compat_gid_t cgid;
404 compat_mode_t mode;
405 unsigned short seq;
406 unsigned short __pad1;
407 unsigned int __unused1;
408 unsigned int __unused2;
409 };
410
411 struct semid_ds32 {
412 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
413 compat_time_t sem_otime; /* last semop time */
414 compat_time_t sem_ctime; /* last change time */
415 u32 sem_base; /* ptr to first semaphore in array */
416 u32 sem_pending; /* pending operations to be processed */
417 u32 sem_pending_last; /* last pending operation */
418 u32 undo; /* undo requests on this array */
419 unsigned short sem_nsems; /* no. of semaphores in array */
420 };
421
422 struct semid64_ds32 {
423 struct ipc64_perm32 sem_perm;
424 compat_time_t sem_otime;
425 compat_time_t sem_ctime;
426 unsigned int sem_nsems;
427 unsigned int __unused1;
428 unsigned int __unused2;
429 };
430
431 struct msqid_ds32
432 {
433 struct ipc_perm32 msg_perm;
434 u32 msg_first;
435 u32 msg_last;
436 compat_time_t msg_stime;
437 compat_time_t msg_rtime;
438 compat_time_t msg_ctime;
439 u32 wwait;
440 u32 rwait;
441 unsigned short msg_cbytes;
442 unsigned short msg_qnum;
443 unsigned short msg_qbytes;
444 compat_ipc_pid_t msg_lspid;
445 compat_ipc_pid_t msg_lrpid;
446 };
447
448 struct msqid64_ds32 {
449 struct ipc64_perm32 msg_perm;
450 compat_time_t msg_stime;
451 unsigned int __unused1;
452 compat_time_t msg_rtime;
453 unsigned int __unused2;
454 compat_time_t msg_ctime;
455 unsigned int __unused3;
456 unsigned int msg_cbytes;
457 unsigned int msg_qnum;
458 unsigned int msg_qbytes;
459 compat_pid_t msg_lspid;
460 compat_pid_t msg_lrpid;
461 unsigned int __unused4;
462 unsigned int __unused5;
463 };
464
465 struct shmid_ds32 {
466 struct ipc_perm32 shm_perm;
467 int shm_segsz;
468 compat_time_t shm_atime;
469 compat_time_t shm_dtime;
470 compat_time_t shm_ctime;
471 compat_ipc_pid_t shm_cpid;
472 compat_ipc_pid_t shm_lpid;
473 unsigned short shm_nattch;
474 };
475
476 struct shmid64_ds32 {
477 struct ipc64_perm32 shm_perm;
478 compat_size_t shm_segsz;
479 compat_time_t shm_atime;
480 compat_time_t shm_dtime;
481 compat_time_t shm_ctime;
482 compat_pid_t shm_cpid;
483 compat_pid_t shm_lpid;
484 unsigned int shm_nattch;
485 unsigned int __unused1;
486 unsigned int __unused2;
487 };
488
489 struct ipc_kludge32 {
490 u32 msgp;
491 s32 msgtyp;
492 };
493
494 static int
495 do_sys32_semctl(int first, int second, int third, void __user *uptr)
496 {
497 union semun fourth;
498 u32 pad;
499 int err, err2;
500 struct semid64_ds s;
501 mm_segment_t old_fs;
502
503 if (!uptr)
504 return -EINVAL;
505 err = -EFAULT;
506 if (get_user (pad, (u32 __user *)uptr))
507 return err;
508 if ((third & ~IPC_64) == SETVAL)
509 fourth.val = (int)pad;
510 else
511 fourth.__pad = (void __user *)A(pad);
512 switch (third & ~IPC_64) {
513 case IPC_INFO:
514 case IPC_RMID:
515 case IPC_SET:
516 case SEM_INFO:
517 case GETVAL:
518 case GETPID:
519 case GETNCNT:
520 case GETZCNT:
521 case GETALL:
522 case SETVAL:
523 case SETALL:
524 err = sys_semctl (first, second, third, fourth);
525 break;
526
527 case IPC_STAT:
528 case SEM_STAT:
529 fourth.__pad = (struct semid64_ds __user *)&s;
530 old_fs = get_fs();
531 set_fs(KERNEL_DS);
532 err = sys_semctl(first, second, third | IPC_64, fourth);
533 set_fs(old_fs);
534
535 if (third & IPC_64) {
536 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
537
538 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
539 err = -EFAULT;
540 break;
541 }
542 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
543 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
544 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
545 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
546 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
547 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
548 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
549 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
550 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
551 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
552 } else {
553 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
554
555 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
556 err = -EFAULT;
557 break;
558 }
559 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
560 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
561 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
562 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
563 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
564 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
565 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
566 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
567 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
568 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
569 }
570 if (err2)
571 err = -EFAULT;
572 break;
573
574 default:
575 err = - EINVAL;
576 break;
577 }
578
579 return err;
580 }
581
582 static int
583 do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
584 {
585 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
586 struct msgbuf *p;
587 mm_segment_t old_fs;
588 int err;
589
590 if (second < 0)
591 return -EINVAL;
592 p = kmalloc (second + sizeof (struct msgbuf)
593 + 4, GFP_USER);
594 if (!p)
595 return -ENOMEM;
596 err = get_user (p->mtype, &up->mtype);
597 if (err)
598 goto out;
599 err |= __copy_from_user (p->mtext, &up->mtext, second);
600 if (err)
601 goto out;
602 old_fs = get_fs ();
603 set_fs (KERNEL_DS);
604 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
605 set_fs (old_fs);
606 out:
607 kfree (p);
608
609 return err;
610 }
611
612 static int
613 do_sys32_msgrcv (int first, int second, int msgtyp, int third,
614 int version, void __user *uptr)
615 {
616 struct msgbuf32 __user *up;
617 struct msgbuf *p;
618 mm_segment_t old_fs;
619 int err;
620
621 if (!version) {
622 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
623 struct ipc_kludge32 ipck;
624
625 err = -EINVAL;
626 if (!uptr)
627 goto out;
628 err = -EFAULT;
629 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
630 goto out;
631 uptr = (void __user *)AA(ipck.msgp);
632 msgtyp = ipck.msgtyp;
633 }
634
635 if (second < 0)
636 return -EINVAL;
637 err = -ENOMEM;
638 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
639 if (!p)
640 goto out;
641 old_fs = get_fs ();
642 set_fs (KERNEL_DS);
643 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
644 set_fs (old_fs);
645 if (err < 0)
646 goto free_then_out;
647 up = (struct msgbuf32 __user *)uptr;
648 if (put_user (p->mtype, &up->mtype) ||
649 __copy_to_user (&up->mtext, p->mtext, err))
650 err = -EFAULT;
651 free_then_out:
652 kfree (p);
653 out:
654 return err;
655 }
656
657 static int
658 do_sys32_msgctl (int first, int second, void __user *uptr)
659 {
660 int err = -EINVAL, err2;
661 struct msqid64_ds m;
662 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
663 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
664 mm_segment_t old_fs;
665
666 switch (second & ~IPC_64) {
667 case IPC_INFO:
668 case IPC_RMID:
669 case MSG_INFO:
670 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
671 break;
672
673 case IPC_SET:
674 if (second & IPC_64) {
675 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
676 err = -EFAULT;
677 break;
678 }
679 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
680 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
681 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
682 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
683 } else {
684 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
685 err = -EFAULT;
686 break;
687 }
688 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
689 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
690 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
691 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
692 }
693 if (err)
694 break;
695 old_fs = get_fs();
696 set_fs(KERNEL_DS);
697 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
698 set_fs(old_fs);
699 break;
700
701 case IPC_STAT:
702 case MSG_STAT:
703 old_fs = get_fs();
704 set_fs(KERNEL_DS);
705 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
706 set_fs(old_fs);
707 if (second & IPC_64) {
708 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
709 err = -EFAULT;
710 break;
711 }
712 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
713 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
714 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
715 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
716 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
717 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
718 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
719 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
720 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
721 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
722 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
723 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
724 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
725 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
726 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
727 if (err2)
728 err = -EFAULT;
729 } else {
730 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
731 err = -EFAULT;
732 break;
733 }
734 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
735 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
736 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
737 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
738 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
739 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
740 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
741 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
742 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
743 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
744 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
745 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
746 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
747 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
748 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
749 if (err2)
750 err = -EFAULT;
751 }
752 break;
753 }
754
755 return err;
756 }
757
758 static int
759 do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
760 {
761 unsigned long raddr;
762 u32 __user *uaddr = (u32 __user *)A((u32)third);
763 int err = -EINVAL;
764
765 if (version == 1)
766 return err;
767 err = do_shmat (first, uptr, second, &raddr);
768 if (err)
769 return err;
770 err = put_user (raddr, uaddr);
771 return err;
772 }
773
774 struct shm_info32 {
775 int used_ids;
776 u32 shm_tot, shm_rss, shm_swp;
777 u32 swap_attempts, swap_successes;
778 };
779
780 static int
781 do_sys32_shmctl (int first, int second, void __user *uptr)
782 {
783 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
784 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
785 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
786 int err = -EFAULT, err2;
787 struct shmid64_ds s64;
788 mm_segment_t old_fs;
789 struct shm_info si;
790 struct shmid_ds s;
791
792 switch (second & ~IPC_64) {
793 case IPC_INFO:
794 second = IPC_INFO; /* So that we don't have to translate it */
795 case IPC_RMID:
796 case SHM_LOCK:
797 case SHM_UNLOCK:
798 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
799 break;
800 case IPC_SET:
801 if (second & IPC_64) {
802 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
803 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
804 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
805 } else {
806 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
807 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
808 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
809 }
810 if (err)
811 break;
812 old_fs = get_fs();
813 set_fs(KERNEL_DS);
814 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
815 set_fs(old_fs);
816 break;
817
818 case IPC_STAT:
819 case SHM_STAT:
820 old_fs = get_fs();
821 set_fs(KERNEL_DS);
822 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
823 set_fs(old_fs);
824 if (err < 0)
825 break;
826 if (second & IPC_64) {
827 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
828 err = -EFAULT;
829 break;
830 }
831 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
832 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
833 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
834 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
835 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
836 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
837 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
838 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
839 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
840 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
841 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
842 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
843 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
844 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
845 } else {
846 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
847 err = -EFAULT;
848 break;
849 }
850 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
851 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
852 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
853 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
854 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
855 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
856 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
857 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
858 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
859 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
860 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
861 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
862 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
863 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
864 }
865 if (err2)
866 err = -EFAULT;
867 break;
868
869 case SHM_INFO:
870 old_fs = get_fs();
871 set_fs(KERNEL_DS);
872 err = sys_shmctl(first, second, (void __user *)&si);
873 set_fs(old_fs);
874 if (err < 0)
875 break;
876 err2 = put_user(si.used_ids, &uip->used_ids);
877 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
878 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
879 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
880 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
881 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
882 if (err2)
883 err = -EFAULT;
884 break;
885
886 default:
887 err = -EINVAL;
888 break;
889 }
890
891 return err;
892 }
893
894 static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
895 const struct compat_timespec __user *timeout32)
896 {
897 struct compat_timespec t32;
898 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
899
900 if (copy_from_user(&t32, timeout32, sizeof(t32)))
901 return -EFAULT;
902
903 if (put_user(t32.tv_sec, &t64->tv_sec) ||
904 put_user(t32.tv_nsec, &t64->tv_nsec))
905 return -EFAULT;
906
907 return sys_semtimedop(semid, tsems, nsems, t64);
908 }
909
910 asmlinkage long
911 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
912 {
913 int version, err;
914
915 version = call >> 16; /* hack for backward compatibility */
916 call &= 0xffff;
917
918 switch (call) {
919 case SEMOP:
920 /* struct sembuf is the same on 32 and 64bit :)) */
921 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
922 NULL);
923 break;
924 case SEMTIMEDOP:
925 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
926 (const struct compat_timespec __user *)AA(fifth));
927 break;
928 case SEMGET:
929 err = sys_semget (first, second, third);
930 break;
931 case SEMCTL:
932 err = do_sys32_semctl (first, second, third,
933 (void __user *)AA(ptr));
934 break;
935
936 case MSGSND:
937 err = do_sys32_msgsnd (first, second, third,
938 (void __user *)AA(ptr));
939 break;
940 case MSGRCV:
941 err = do_sys32_msgrcv (first, second, fifth, third,
942 version, (void __user *)AA(ptr));
943 break;
944 case MSGGET:
945 err = sys_msgget ((key_t) first, second);
946 break;
947 case MSGCTL:
948 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
949 break;
950
951 case SHMAT:
952 err = do_sys32_shmat (first, second, third,
953 version, (void __user *)AA(ptr));
954 break;
955 case SHMDT:
956 err = sys_shmdt ((char __user *)A(ptr));
957 break;
958 case SHMGET:
959 err = sys_shmget (first, (unsigned)second, third);
960 break;
961 case SHMCTL:
962 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
963 break;
964 default:
965 err = -EINVAL;
966 break;
967 }
968
969 return err;
970 }
971
972 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
973 int shmflg, int32_t __user *addr)
974 {
975 unsigned long raddr;
976 int err;
977
978 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
979 if (err)
980 return err;
981
982 return put_user(raddr, addr);
983 }
984
985 struct sysctl_args32
986 {
987 compat_caddr_t name;
988 int nlen;
989 compat_caddr_t oldval;
990 compat_caddr_t oldlenp;
991 compat_caddr_t newval;
992 compat_size_t newlen;
993 unsigned int __unused[4];
994 };
995
996 #ifdef CONFIG_SYSCTL_SYSCALL
997
998 asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
999 {
1000 struct sysctl_args32 tmp;
1001 int error;
1002 size_t oldlen;
1003 size_t __user *oldlenp = NULL;
1004 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1005
1006 if (copy_from_user(&tmp, args, sizeof(tmp)))
1007 return -EFAULT;
1008
1009 if (tmp.oldval && tmp.oldlenp) {
1010 /* Duh, this is ugly and might not work if sysctl_args
1011 is in read-only memory, but do_sysctl does indirectly
1012 a lot of uaccess in both directions and we'd have to
1013 basically copy the whole sysctl.c here, and
1014 glibc's __sysctl uses rw memory for the structure
1015 anyway. */
1016 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1017 put_user(oldlen, (size_t __user *)addr))
1018 return -EFAULT;
1019 oldlenp = (size_t __user *)addr;
1020 }
1021
1022 lock_kernel();
1023 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1024 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1025 unlock_kernel();
1026 if (oldlenp) {
1027 if (!error) {
1028 if (get_user(oldlen, (size_t __user *)addr) ||
1029 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1030 error = -EFAULT;
1031 }
1032 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1033 }
1034 return error;
1035 }
1036
1037 #endif /* CONFIG_SYSCTL_SYSCALL */
1038
1039 asmlinkage long sys32_newuname(struct new_utsname __user * name)
1040 {
1041 int ret = 0;
1042
1043 down_read(&uts_sem);
1044 if (copy_to_user(name, utsname(), sizeof *name))
1045 ret = -EFAULT;
1046 up_read(&uts_sem);
1047
1048 if (current->personality == PER_LINUX32 && !ret)
1049 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1050 ret = -EFAULT;
1051
1052 return ret;
1053 }
1054
1055 asmlinkage int sys32_personality(unsigned long personality)
1056 {
1057 int ret;
1058 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1059 personality = PER_LINUX32;
1060 ret = sys_personality(personality);
1061 if (ret == PER_LINUX32)
1062 ret = PER_LINUX;
1063 return ret;
1064 }
1065
1066 /* ustat compatibility */
1067 struct ustat32 {
1068 compat_daddr_t f_tfree;
1069 compat_ino_t f_tinode;
1070 char f_fname[6];
1071 char f_fpack[6];
1072 };
1073
1074 extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1075
1076 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1077 {
1078 int err;
1079 struct ustat tmp;
1080 struct ustat32 tmp32;
1081 mm_segment_t old_fs = get_fs();
1082
1083 set_fs(KERNEL_DS);
1084 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1085 set_fs (old_fs);
1086
1087 if (err)
1088 goto out;
1089
1090 memset(&tmp32,0,sizeof(struct ustat32));
1091 tmp32.f_tfree = tmp.f_tfree;
1092 tmp32.f_tinode = tmp.f_tinode;
1093
1094 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1095
1096 out:
1097 return err;
1098 }
1099
1100 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1101 s32 count)
1102 {
1103 mm_segment_t old_fs = get_fs();
1104 int ret;
1105 off_t of;
1106
1107 if (offset && get_user(of, offset))
1108 return -EFAULT;
1109
1110 set_fs(KERNEL_DS);
1111 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1112 set_fs(old_fs);
1113
1114 if (offset && put_user(of, offset))
1115 return -EFAULT;
1116
1117 return ret;
1118 }
1119
1120 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1121 size_t count)
1122 {
1123 return sys_readahead(fd, merge_64(a2, a3), count);
1124 }
1125
1126 asmlinkage long sys32_sync_file_range(int fd, int __pad,
1127 unsigned long a2, unsigned long a3,
1128 unsigned long a4, unsigned long a5,
1129 int flags)
1130 {
1131 return sys_sync_file_range(fd,
1132 merge_64(a2, a3), merge_64(a4, a5),
1133 flags);
1134 }
1135
1136 /* Argument list sizes for sys_socketcall */
1137 #define AL(x) ((x) * sizeof(unsigned int))
1138 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1139 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1140 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1141 #undef AL
1142
1143 /*
1144 * System call vectors.
1145 *
1146 * Argument checking cleaned up. Saved 20% in size.
1147 * This function doesn't need to set the kernel lock because
1148 * it is set by the callees.
1149 */
1150
1151 asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1152 {
1153 unsigned int a[6];
1154 unsigned int a0,a1;
1155 int err;
1156
1157 extern asmlinkage long sys_socket(int family, int type, int protocol);
1158 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1159 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1160 extern asmlinkage long sys_listen(int fd, int backlog);
1161 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1162 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1163 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1164 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1165 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1166 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1167 struct sockaddr __user *addr, int addr_len);
1168 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1169 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1170 struct sockaddr __user *addr, int __user *addr_len);
1171 extern asmlinkage long sys_shutdown(int fd, int how);
1172 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1173 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1174 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1175 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1176
1177
1178 if(call<1||call>SYS_RECVMSG)
1179 return -EINVAL;
1180
1181 /* copy_from_user should be SMP safe. */
1182 if (copy_from_user(a, args32, socketcall_nargs[call]))
1183 return -EFAULT;
1184
1185 a0=a[0];
1186 a1=a[1];
1187
1188 switch(call)
1189 {
1190 case SYS_SOCKET:
1191 err = sys_socket(a0,a1,a[2]);
1192 break;
1193 case SYS_BIND:
1194 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1195 break;
1196 case SYS_CONNECT:
1197 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1198 break;
1199 case SYS_LISTEN:
1200 err = sys_listen(a0,a1);
1201 break;
1202 case SYS_ACCEPT:
1203 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1204 break;
1205 case SYS_GETSOCKNAME:
1206 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1207 break;
1208 case SYS_GETPEERNAME:
1209 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1210 break;
1211 case SYS_SOCKETPAIR:
1212 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1213 break;
1214 case SYS_SEND:
1215 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1216 break;
1217 case SYS_SENDTO:
1218 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1219 (struct sockaddr __user *)A(a[4]), a[5]);
1220 break;
1221 case SYS_RECV:
1222 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1223 break;
1224 case SYS_RECVFROM:
1225 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1226 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1227 break;
1228 case SYS_SHUTDOWN:
1229 err = sys_shutdown(a0,a1);
1230 break;
1231 case SYS_SETSOCKOPT:
1232 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1233 break;
1234 case SYS_GETSOCKOPT:
1235 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1236 break;
1237 case SYS_SENDMSG:
1238 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1239 break;
1240 case SYS_RECVMSG:
1241 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1242 break;
1243 default:
1244 err = -EINVAL;
1245 break;
1246 }
1247 return err;
1248 }
1249
1250 struct sigevent32 {
1251 u32 sigev_value;
1252 u32 sigev_signo;
1253 u32 sigev_notify;
1254 u32 payload[(64 / 4) - 3];
1255 };
1256
1257 extern asmlinkage long
1258 sys_timer_create(clockid_t which_clock,
1259 struct sigevent __user *timer_event_spec,
1260 timer_t __user * created_timer_id);
1261
1262 long
1263 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1264 {
1265 struct sigevent __user *p = NULL;
1266 if (se32) {
1267 struct sigevent se;
1268 p = compat_alloc_user_space(sizeof(struct sigevent));
1269 memset(&se, 0, sizeof(struct sigevent));
1270 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1271 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1272 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1273 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1274 sizeof(se32->payload)) ||
1275 copy_to_user(p, &se, sizeof(se)))
1276 return -EFAULT;
1277 }
1278 return sys_timer_create(clock, p, timer_id);
1279 }
1280
1281 save_static_function(sys32_clone);
1282 __attribute_used__ noinline static int
1283 _sys32_clone(nabi_no_regargs struct pt_regs regs)
1284 {
1285 unsigned long clone_flags;
1286 unsigned long newsp;
1287 int __user *parent_tidptr, *child_tidptr;
1288
1289 clone_flags = regs.regs[4];
1290 newsp = regs.regs[5];
1291 if (!newsp)
1292 newsp = regs.regs[29];
1293 parent_tidptr = (int __user *) regs.regs[6];
1294
1295 /* Use __dummy4 instead of getting it off the stack, so that
1296 syscall() works. */
1297 child_tidptr = (int __user *) __dummy4;
1298 return do_fork(clone_flags, newsp, &regs, 0,
1299 parent_tidptr, child_tidptr);
1300 }
kernel source for telekom puls (alcatel/mediatek)