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[deliverable/linux.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/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 *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 *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 struct dirent32 {
165 unsigned int d_ino;
166 unsigned int d_off;
167 unsigned short d_reclen;
168 char d_name[NAME_MAX + 1];
169 };
170
171 static void
172 xlate_dirent(void *dirent64, void *dirent32, long n)
173 {
174 long off;
175 struct dirent *dirp;
176 struct dirent32 *dirp32;
177
178 off = 0;
179 while (off < n) {
180 dirp = (struct dirent *)(dirent64 + off);
181 dirp32 = (struct dirent32 *)(dirent32 + off);
182 off += dirp->d_reclen;
183 dirp32->d_ino = dirp->d_ino;
184 dirp32->d_off = (unsigned int)dirp->d_off;
185 dirp32->d_reclen = dirp->d_reclen;
186 strncpy(dirp32->d_name, dirp->d_name, dirp->d_reclen - ((3 * 4) + 2));
187 }
188 return;
189 }
190
191 asmlinkage long
192 sys32_getdents(unsigned int fd, void * dirent32, unsigned int count)
193 {
194 long n;
195 void *dirent64;
196
197 dirent64 = (void *)((unsigned long)(dirent32 + (sizeof(long) - 1)) & ~(sizeof(long) - 1));
198 if ((n = sys_getdents(fd, dirent64, count - (dirent64 - dirent32))) < 0)
199 return(n);
200 xlate_dirent(dirent64, dirent32, n);
201 return(n);
202 }
203
204 asmlinkage int old_readdir(unsigned int fd, void * dirent, unsigned int count);
205
206 asmlinkage int
207 sys32_readdir(unsigned int fd, void * dirent32, unsigned int count)
208 {
209 int n;
210 struct dirent dirent64;
211
212 if ((n = old_readdir(fd, &dirent64, count)) < 0)
213 return(n);
214 xlate_dirent(&dirent64, dirent32, dirent64.d_reclen);
215 return(n);
216 }
217
218 asmlinkage int
219 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
220 {
221 return compat_sys_wait4(pid, stat_addr, options, NULL);
222 }
223
224 asmlinkage long
225 sysn32_waitid(int which, compat_pid_t pid,
226 siginfo_t __user *uinfo, int options,
227 struct compat_rusage __user *uru)
228 {
229 struct rusage ru;
230 long ret;
231 mm_segment_t old_fs = get_fs();
232
233 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
234 return -EFAULT;
235
236 set_fs (KERNEL_DS);
237 ret = sys_waitid(which, pid, uinfo, options,
238 uru ? (struct rusage __user *) &ru : NULL);
239 set_fs (old_fs);
240
241 if (ret < 0 || uinfo->si_signo == 0)
242 return ret;
243
244 if (uru)
245 ret = put_compat_rusage(&ru, uru);
246 return ret;
247 }
248
249 struct sysinfo32 {
250 s32 uptime;
251 u32 loads[3];
252 u32 totalram;
253 u32 freeram;
254 u32 sharedram;
255 u32 bufferram;
256 u32 totalswap;
257 u32 freeswap;
258 u16 procs;
259 u32 totalhigh;
260 u32 freehigh;
261 u32 mem_unit;
262 char _f[8];
263 };
264
265 asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
266 {
267 struct sysinfo s;
268 int ret, err;
269 mm_segment_t old_fs = get_fs ();
270
271 set_fs (KERNEL_DS);
272 ret = sys_sysinfo(&s);
273 set_fs (old_fs);
274 err = put_user (s.uptime, &info->uptime);
275 err |= __put_user (s.loads[0], &info->loads[0]);
276 err |= __put_user (s.loads[1], &info->loads[1]);
277 err |= __put_user (s.loads[2], &info->loads[2]);
278 err |= __put_user (s.totalram, &info->totalram);
279 err |= __put_user (s.freeram, &info->freeram);
280 err |= __put_user (s.sharedram, &info->sharedram);
281 err |= __put_user (s.bufferram, &info->bufferram);
282 err |= __put_user (s.totalswap, &info->totalswap);
283 err |= __put_user (s.freeswap, &info->freeswap);
284 err |= __put_user (s.procs, &info->procs);
285 err |= __put_user (s.totalhigh, &info->totalhigh);
286 err |= __put_user (s.freehigh, &info->freehigh);
287 err |= __put_user (s.mem_unit, &info->mem_unit);
288 if (err)
289 return -EFAULT;
290 return ret;
291 }
292
293 #define RLIM_INFINITY32 0x7fffffff
294 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
295
296 struct rlimit32 {
297 int rlim_cur;
298 int rlim_max;
299 };
300
301 #ifdef __MIPSEB__
302 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
303 int length_hi, int length_lo)
304 #endif
305 #ifdef __MIPSEL__
306 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
307 int length_lo, int length_hi)
308 #endif
309 {
310 loff_t length;
311
312 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
313
314 return sys_truncate(path, length);
315 }
316
317 #ifdef __MIPSEB__
318 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
319 int length_hi, int length_lo)
320 #endif
321 #ifdef __MIPSEL__
322 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
323 int length_lo, int length_hi)
324 #endif
325 {
326 loff_t length;
327
328 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
329
330 return sys_ftruncate(fd, length);
331 }
332
333 static inline long
334 get_tv32(struct timeval *o, struct compat_timeval *i)
335 {
336 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
337 (__get_user(o->tv_sec, &i->tv_sec) |
338 __get_user(o->tv_usec, &i->tv_usec)));
339 }
340
341 static inline long
342 put_tv32(struct compat_timeval *o, struct timeval *i)
343 {
344 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
345 (__put_user(i->tv_sec, &o->tv_sec) |
346 __put_user(i->tv_usec, &o->tv_usec)));
347 }
348
349 extern struct timezone sys_tz;
350
351 asmlinkage int
352 sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
353 {
354 if (tv) {
355 struct timeval ktv;
356 do_gettimeofday(&ktv);
357 if (put_tv32(tv, &ktv))
358 return -EFAULT;
359 }
360 if (tz) {
361 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
362 return -EFAULT;
363 }
364 return 0;
365 }
366
367 static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
368 {
369 long usec;
370
371 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
372 return -EFAULT;
373 if (__get_user(o->tv_sec, &i->tv_sec))
374 return -EFAULT;
375 if (__get_user(usec, &i->tv_usec))
376 return -EFAULT;
377 o->tv_nsec = usec * 1000;
378 return 0;
379 }
380
381 asmlinkage int
382 sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
383 {
384 struct timespec kts;
385 struct timezone ktz;
386
387 if (tv) {
388 if (get_ts32(&kts, tv))
389 return -EFAULT;
390 }
391 if (tz) {
392 if (copy_from_user(&ktz, tz, sizeof(ktz)))
393 return -EFAULT;
394 }
395
396 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
397 }
398
399 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
400 unsigned int offset_low, loff_t * result,
401 unsigned int origin)
402 {
403 return sys_llseek(fd, offset_high, offset_low, result, origin);
404 }
405
406 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
407 lseek back to original location. They fail just like lseek does on
408 non-seekable files. */
409
410 asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf,
411 size_t count, u32 unused, u64 a4, u64 a5)
412 {
413 ssize_t ret;
414 struct file * file;
415 ssize_t (*read)(struct file *, char *, size_t, loff_t *);
416 loff_t pos;
417
418 ret = -EBADF;
419 file = fget(fd);
420 if (!file)
421 goto bad_file;
422 if (!(file->f_mode & FMODE_READ))
423 goto out;
424 pos = merge_64(a4, a5);
425 ret = rw_verify_area(READ, file, &pos, count);
426 if (ret < 0)
427 goto out;
428 ret = -EINVAL;
429 if (!file->f_op || !(read = file->f_op->read))
430 goto out;
431 if (pos < 0)
432 goto out;
433 ret = -ESPIPE;
434 if (!(file->f_mode & FMODE_PREAD))
435 goto out;
436 ret = read(file, buf, count, &pos);
437 if (ret > 0)
438 dnotify_parent(file->f_dentry, DN_ACCESS);
439 out:
440 fput(file);
441 bad_file:
442 return ret;
443 }
444
445 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf,
446 size_t count, u32 unused, u64 a4, u64 a5)
447 {
448 ssize_t ret;
449 struct file * file;
450 ssize_t (*write)(struct file *, const char *, size_t, loff_t *);
451 loff_t pos;
452
453 ret = -EBADF;
454 file = fget(fd);
455 if (!file)
456 goto bad_file;
457 if (!(file->f_mode & FMODE_WRITE))
458 goto out;
459 pos = merge_64(a4, a5);
460 ret = rw_verify_area(WRITE, file, &pos, count);
461 if (ret < 0)
462 goto out;
463 ret = -EINVAL;
464 if (!file->f_op || !(write = file->f_op->write))
465 goto out;
466 if (pos < 0)
467 goto out;
468
469 ret = -ESPIPE;
470 if (!(file->f_mode & FMODE_PWRITE))
471 goto out;
472
473 ret = write(file, buf, count, &pos);
474 if (ret > 0)
475 dnotify_parent(file->f_dentry, DN_MODIFY);
476 out:
477 fput(file);
478 bad_file:
479 return ret;
480 }
481
482 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
483 struct compat_timespec *interval)
484 {
485 struct timespec t;
486 int ret;
487 mm_segment_t old_fs = get_fs ();
488
489 set_fs (KERNEL_DS);
490 ret = sys_sched_rr_get_interval(pid, &t);
491 set_fs (old_fs);
492 if (put_user (t.tv_sec, &interval->tv_sec) ||
493 __put_user (t.tv_nsec, &interval->tv_nsec))
494 return -EFAULT;
495 return ret;
496 }
497
498 struct msgbuf32 { s32 mtype; char mtext[1]; };
499
500 struct ipc_perm32
501 {
502 key_t key;
503 __compat_uid_t uid;
504 __compat_gid_t gid;
505 __compat_uid_t cuid;
506 __compat_gid_t cgid;
507 compat_mode_t mode;
508 unsigned short seq;
509 };
510
511 struct ipc64_perm32 {
512 key_t key;
513 __compat_uid_t uid;
514 __compat_gid_t gid;
515 __compat_uid_t cuid;
516 __compat_gid_t cgid;
517 compat_mode_t mode;
518 unsigned short seq;
519 unsigned short __pad1;
520 unsigned int __unused1;
521 unsigned int __unused2;
522 };
523
524 struct semid_ds32 {
525 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
526 compat_time_t sem_otime; /* last semop time */
527 compat_time_t sem_ctime; /* last change time */
528 u32 sem_base; /* ptr to first semaphore in array */
529 u32 sem_pending; /* pending operations to be processed */
530 u32 sem_pending_last; /* last pending operation */
531 u32 undo; /* undo requests on this array */
532 unsigned short sem_nsems; /* no. of semaphores in array */
533 };
534
535 struct semid64_ds32 {
536 struct ipc64_perm32 sem_perm;
537 compat_time_t sem_otime;
538 compat_time_t sem_ctime;
539 unsigned int sem_nsems;
540 unsigned int __unused1;
541 unsigned int __unused2;
542 };
543
544 struct msqid_ds32
545 {
546 struct ipc_perm32 msg_perm;
547 u32 msg_first;
548 u32 msg_last;
549 compat_time_t msg_stime;
550 compat_time_t msg_rtime;
551 compat_time_t msg_ctime;
552 u32 wwait;
553 u32 rwait;
554 unsigned short msg_cbytes;
555 unsigned short msg_qnum;
556 unsigned short msg_qbytes;
557 compat_ipc_pid_t msg_lspid;
558 compat_ipc_pid_t msg_lrpid;
559 };
560
561 struct msqid64_ds32 {
562 struct ipc64_perm32 msg_perm;
563 compat_time_t msg_stime;
564 unsigned int __unused1;
565 compat_time_t msg_rtime;
566 unsigned int __unused2;
567 compat_time_t msg_ctime;
568 unsigned int __unused3;
569 unsigned int msg_cbytes;
570 unsigned int msg_qnum;
571 unsigned int msg_qbytes;
572 compat_pid_t msg_lspid;
573 compat_pid_t msg_lrpid;
574 unsigned int __unused4;
575 unsigned int __unused5;
576 };
577
578 struct shmid_ds32 {
579 struct ipc_perm32 shm_perm;
580 int shm_segsz;
581 compat_time_t shm_atime;
582 compat_time_t shm_dtime;
583 compat_time_t shm_ctime;
584 compat_ipc_pid_t shm_cpid;
585 compat_ipc_pid_t shm_lpid;
586 unsigned short shm_nattch;
587 };
588
589 struct shmid64_ds32 {
590 struct ipc64_perm32 shm_perm;
591 compat_size_t shm_segsz;
592 compat_time_t shm_atime;
593 compat_time_t shm_dtime;
594 compat_time_t shm_ctime;
595 compat_pid_t shm_cpid;
596 compat_pid_t shm_lpid;
597 unsigned int shm_nattch;
598 unsigned int __unused1;
599 unsigned int __unused2;
600 };
601
602 struct ipc_kludge32 {
603 u32 msgp;
604 s32 msgtyp;
605 };
606
607 static int
608 do_sys32_semctl(int first, int second, int third, void *uptr)
609 {
610 union semun fourth;
611 u32 pad;
612 int err, err2;
613 struct semid64_ds s;
614 mm_segment_t old_fs;
615
616 if (!uptr)
617 return -EINVAL;
618 err = -EFAULT;
619 if (get_user (pad, (u32 *)uptr))
620 return err;
621 if ((third & ~IPC_64) == SETVAL)
622 fourth.val = (int)pad;
623 else
624 fourth.__pad = (void *)A(pad);
625 switch (third & ~IPC_64) {
626 case IPC_INFO:
627 case IPC_RMID:
628 case IPC_SET:
629 case SEM_INFO:
630 case GETVAL:
631 case GETPID:
632 case GETNCNT:
633 case GETZCNT:
634 case GETALL:
635 case SETVAL:
636 case SETALL:
637 err = sys_semctl (first, second, third, fourth);
638 break;
639
640 case IPC_STAT:
641 case SEM_STAT:
642 fourth.__pad = &s;
643 old_fs = get_fs();
644 set_fs(KERNEL_DS);
645 err = sys_semctl(first, second, third | IPC_64, fourth);
646 set_fs(old_fs);
647
648 if (third & IPC_64) {
649 struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad);
650
651 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
652 err = -EFAULT;
653 break;
654 }
655 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
656 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
657 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
658 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
659 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
660 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
661 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
662 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
663 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
664 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
665 } else {
666 struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad);
667
668 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
669 err = -EFAULT;
670 break;
671 }
672 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
673 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
674 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
675 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
676 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
677 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
678 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
679 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
680 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
681 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
682 }
683 if (err2)
684 err = -EFAULT;
685 break;
686
687 default:
688 err = - EINVAL;
689 break;
690 }
691
692 return err;
693 }
694
695 static int
696 do_sys32_msgsnd (int first, int second, int third, void *uptr)
697 {
698 struct msgbuf32 *up = (struct msgbuf32 *)uptr;
699 struct msgbuf *p;
700 mm_segment_t old_fs;
701 int err;
702
703 if (second < 0)
704 return -EINVAL;
705 p = kmalloc (second + sizeof (struct msgbuf)
706 + 4, GFP_USER);
707 if (!p)
708 return -ENOMEM;
709 err = get_user (p->mtype, &up->mtype);
710 if (err)
711 goto out;
712 err |= __copy_from_user (p->mtext, &up->mtext, second);
713 if (err)
714 goto out;
715 old_fs = get_fs ();
716 set_fs (KERNEL_DS);
717 err = sys_msgsnd (first, p, second, third);
718 set_fs (old_fs);
719 out:
720 kfree (p);
721
722 return err;
723 }
724
725 static int
726 do_sys32_msgrcv (int first, int second, int msgtyp, int third,
727 int version, void *uptr)
728 {
729 struct msgbuf32 *up;
730 struct msgbuf *p;
731 mm_segment_t old_fs;
732 int err;
733
734 if (!version) {
735 struct ipc_kludge32 *uipck = (struct ipc_kludge32 *)uptr;
736 struct ipc_kludge32 ipck;
737
738 err = -EINVAL;
739 if (!uptr)
740 goto out;
741 err = -EFAULT;
742 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
743 goto out;
744 uptr = (void *)AA(ipck.msgp);
745 msgtyp = ipck.msgtyp;
746 }
747
748 if (second < 0)
749 return -EINVAL;
750 err = -ENOMEM;
751 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
752 if (!p)
753 goto out;
754 old_fs = get_fs ();
755 set_fs (KERNEL_DS);
756 err = sys_msgrcv (first, p, second + 4, msgtyp, third);
757 set_fs (old_fs);
758 if (err < 0)
759 goto free_then_out;
760 up = (struct msgbuf32 *)uptr;
761 if (put_user (p->mtype, &up->mtype) ||
762 __copy_to_user (&up->mtext, p->mtext, err))
763 err = -EFAULT;
764 free_then_out:
765 kfree (p);
766 out:
767 return err;
768 }
769
770 static int
771 do_sys32_msgctl (int first, int second, void *uptr)
772 {
773 int err = -EINVAL, err2;
774 struct msqid64_ds m;
775 struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
776 struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
777 mm_segment_t old_fs;
778
779 switch (second & ~IPC_64) {
780 case IPC_INFO:
781 case IPC_RMID:
782 case MSG_INFO:
783 err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
784 break;
785
786 case IPC_SET:
787 if (second & IPC_64) {
788 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
789 err = -EFAULT;
790 break;
791 }
792 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
793 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
794 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
795 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
796 } else {
797 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
798 err = -EFAULT;
799 break;
800 }
801 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
802 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
803 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
804 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
805 }
806 if (err)
807 break;
808 old_fs = get_fs();
809 set_fs(KERNEL_DS);
810 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
811 set_fs(old_fs);
812 break;
813
814 case IPC_STAT:
815 case MSG_STAT:
816 old_fs = get_fs();
817 set_fs(KERNEL_DS);
818 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
819 set_fs(old_fs);
820 if (second & IPC_64) {
821 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
822 err = -EFAULT;
823 break;
824 }
825 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
826 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
827 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
828 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
829 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
830 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
831 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
832 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
833 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
834 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
835 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
836 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
837 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
838 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
839 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
840 if (err2)
841 err = -EFAULT;
842 } else {
843 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
844 err = -EFAULT;
845 break;
846 }
847 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
848 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
849 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
850 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
851 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
852 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
853 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
854 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
855 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
856 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
857 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
858 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
859 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
860 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
861 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
862 if (err2)
863 err = -EFAULT;
864 }
865 break;
866 }
867
868 return err;
869 }
870
871 static int
872 do_sys32_shmat (int first, int second, int third, int version, void *uptr)
873 {
874 unsigned long raddr;
875 u32 *uaddr = (u32 *)A((u32)third);
876 int err = -EINVAL;
877
878 if (version == 1)
879 return err;
880 err = do_shmat (first, uptr, second, &raddr);
881 if (err)
882 return err;
883 err = put_user (raddr, uaddr);
884 return err;
885 }
886
887 struct shm_info32 {
888 int used_ids;
889 u32 shm_tot, shm_rss, shm_swp;
890 u32 swap_attempts, swap_successes;
891 };
892
893 static int
894 do_sys32_shmctl (int first, int second, void *uptr)
895 {
896 struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
897 struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
898 struct shm_info32 *uip = (struct shm_info32 *)uptr;
899 int err = -EFAULT, err2;
900 struct shmid64_ds s64;
901 mm_segment_t old_fs;
902 struct shm_info si;
903 struct shmid_ds s;
904
905 switch (second & ~IPC_64) {
906 case IPC_INFO:
907 second = IPC_INFO; /* So that we don't have to translate it */
908 case IPC_RMID:
909 case SHM_LOCK:
910 case SHM_UNLOCK:
911 err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
912 break;
913 case IPC_SET:
914 if (second & IPC_64) {
915 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
916 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
917 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
918 } else {
919 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
920 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
921 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
922 }
923 if (err)
924 break;
925 old_fs = get_fs();
926 set_fs(KERNEL_DS);
927 err = sys_shmctl(first, second & ~IPC_64, &s);
928 set_fs(old_fs);
929 break;
930
931 case IPC_STAT:
932 case SHM_STAT:
933 old_fs = get_fs();
934 set_fs(KERNEL_DS);
935 err = sys_shmctl(first, second | IPC_64, (void *) &s64);
936 set_fs(old_fs);
937 if (err < 0)
938 break;
939 if (second & IPC_64) {
940 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
941 err = -EFAULT;
942 break;
943 }
944 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
945 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
946 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
947 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
948 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
949 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
950 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
951 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
952 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
953 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
954 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
955 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
956 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
957 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
958 } else {
959 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
960 err = -EFAULT;
961 break;
962 }
963 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
964 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
965 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
966 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
967 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
968 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
969 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
970 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
971 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
972 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
973 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
974 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
975 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
976 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
977 }
978 if (err2)
979 err = -EFAULT;
980 break;
981
982 case SHM_INFO:
983 old_fs = get_fs();
984 set_fs(KERNEL_DS);
985 err = sys_shmctl(first, second, (void *)&si);
986 set_fs(old_fs);
987 if (err < 0)
988 break;
989 err2 = put_user(si.used_ids, &uip->used_ids);
990 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
991 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
992 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
993 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
994 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
995 if (err2)
996 err = -EFAULT;
997 break;
998
999 default:
1000 err = -EINVAL;
1001 break;
1002 }
1003
1004 return err;
1005 }
1006
1007 static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems,
1008 const struct compat_timespec *timeout32)
1009 {
1010 struct compat_timespec t32;
1011 struct timespec *t64 = compat_alloc_user_space(sizeof(*t64));
1012
1013 if (copy_from_user(&t32, timeout32, sizeof(t32)))
1014 return -EFAULT;
1015
1016 if (put_user(t32.tv_sec, &t64->tv_sec) ||
1017 put_user(t32.tv_nsec, &t64->tv_nsec))
1018 return -EFAULT;
1019
1020 return sys_semtimedop(semid, tsems, nsems, t64);
1021 }
1022
1023 asmlinkage long
1024 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
1025 {
1026 int version, err;
1027
1028 version = call >> 16; /* hack for backward compatibility */
1029 call &= 0xffff;
1030
1031 switch (call) {
1032 case SEMOP:
1033 /* struct sembuf is the same on 32 and 64bit :)) */
1034 err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second,
1035 NULL);
1036 break;
1037 case SEMTIMEDOP:
1038 err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second,
1039 (const struct compat_timespec __user *)AA(fifth));
1040 break;
1041 case SEMGET:
1042 err = sys_semget (first, second, third);
1043 break;
1044 case SEMCTL:
1045 err = do_sys32_semctl (first, second, third,
1046 (void *)AA(ptr));
1047 break;
1048
1049 case MSGSND:
1050 err = do_sys32_msgsnd (first, second, third,
1051 (void *)AA(ptr));
1052 break;
1053 case MSGRCV:
1054 err = do_sys32_msgrcv (first, second, fifth, third,
1055 version, (void *)AA(ptr));
1056 break;
1057 case MSGGET:
1058 err = sys_msgget ((key_t) first, second);
1059 break;
1060 case MSGCTL:
1061 err = do_sys32_msgctl (first, second, (void *)AA(ptr));
1062 break;
1063
1064 case SHMAT:
1065 err = do_sys32_shmat (first, second, third,
1066 version, (void *)AA(ptr));
1067 break;
1068 case SHMDT:
1069 err = sys_shmdt ((char *)A(ptr));
1070 break;
1071 case SHMGET:
1072 err = sys_shmget (first, (unsigned)second, third);
1073 break;
1074 case SHMCTL:
1075 err = do_sys32_shmctl (first, second, (void *)AA(ptr));
1076 break;
1077 default:
1078 err = -EINVAL;
1079 break;
1080 }
1081
1082 return err;
1083 }
1084
1085 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
1086 int shmflg, int32_t *addr)
1087 {
1088 unsigned long raddr;
1089 int err;
1090
1091 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1092 if (err)
1093 return err;
1094
1095 return put_user(raddr, addr);
1096 }
1097
1098 struct sysctl_args32
1099 {
1100 compat_caddr_t name;
1101 int nlen;
1102 compat_caddr_t oldval;
1103 compat_caddr_t oldlenp;
1104 compat_caddr_t newval;
1105 compat_size_t newlen;
1106 unsigned int __unused[4];
1107 };
1108
1109 #ifdef CONFIG_SYSCTL
1110
1111 asmlinkage long sys32_sysctl(struct sysctl_args32 *args)
1112 {
1113 struct sysctl_args32 tmp;
1114 int error;
1115 size_t oldlen, *oldlenp = NULL;
1116 unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
1117
1118 if (copy_from_user(&tmp, args, sizeof(tmp)))
1119 return -EFAULT;
1120
1121 if (tmp.oldval && tmp.oldlenp) {
1122 /* Duh, this is ugly and might not work if sysctl_args
1123 is in read-only memory, but do_sysctl does indirectly
1124 a lot of uaccess in both directions and we'd have to
1125 basically copy the whole sysctl.c here, and
1126 glibc's __sysctl uses rw memory for the structure
1127 anyway. */
1128 if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
1129 put_user(oldlen, (size_t *)addr))
1130 return -EFAULT;
1131 oldlenp = (size_t *)addr;
1132 }
1133
1134 lock_kernel();
1135 error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval),
1136 oldlenp, (void *)A(tmp.newval), tmp.newlen);
1137 unlock_kernel();
1138 if (oldlenp) {
1139 if (!error) {
1140 if (get_user(oldlen, (size_t *)addr) ||
1141 put_user(oldlen, (u32 *)A(tmp.oldlenp)))
1142 error = -EFAULT;
1143 }
1144 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1145 }
1146 return error;
1147 }
1148
1149 #endif /* CONFIG_SYSCTL */
1150
1151 asmlinkage long sys32_newuname(struct new_utsname * name)
1152 {
1153 int ret = 0;
1154
1155 down_read(&uts_sem);
1156 if (copy_to_user(name,&system_utsname,sizeof *name))
1157 ret = -EFAULT;
1158 up_read(&uts_sem);
1159
1160 if (current->personality == PER_LINUX32 && !ret)
1161 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1162 ret = -EFAULT;
1163
1164 return ret;
1165 }
1166
1167 asmlinkage int sys32_personality(unsigned long personality)
1168 {
1169 int ret;
1170 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1171 personality = PER_LINUX32;
1172 ret = sys_personality(personality);
1173 if (ret == PER_LINUX32)
1174 ret = PER_LINUX;
1175 return ret;
1176 }
1177
1178 /* ustat compatibility */
1179 struct ustat32 {
1180 compat_daddr_t f_tfree;
1181 compat_ino_t f_tinode;
1182 char f_fname[6];
1183 char f_fpack[6];
1184 };
1185
1186 extern asmlinkage long sys_ustat(dev_t dev, struct ustat * ubuf);
1187
1188 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 * ubuf32)
1189 {
1190 int err;
1191 struct ustat tmp;
1192 struct ustat32 tmp32;
1193 mm_segment_t old_fs = get_fs();
1194
1195 set_fs(KERNEL_DS);
1196 err = sys_ustat(dev, &tmp);
1197 set_fs (old_fs);
1198
1199 if (err)
1200 goto out;
1201
1202 memset(&tmp32,0,sizeof(struct ustat32));
1203 tmp32.f_tfree = tmp.f_tfree;
1204 tmp32.f_tinode = tmp.f_tinode;
1205
1206 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1207
1208 out:
1209 return err;
1210 }
1211
1212 /* Handle adjtimex compatibility. */
1213
1214 struct timex32 {
1215 u32 modes;
1216 s32 offset, freq, maxerror, esterror;
1217 s32 status, constant, precision, tolerance;
1218 struct compat_timeval time;
1219 s32 tick;
1220 s32 ppsfreq, jitter, shift, stabil;
1221 s32 jitcnt, calcnt, errcnt, stbcnt;
1222 s32 :32; s32 :32; s32 :32; s32 :32;
1223 s32 :32; s32 :32; s32 :32; s32 :32;
1224 s32 :32; s32 :32; s32 :32; s32 :32;
1225 };
1226
1227 extern int do_adjtimex(struct timex *);
1228
1229 asmlinkage int sys32_adjtimex(struct timex32 *utp)
1230 {
1231 struct timex txc;
1232 int ret;
1233
1234 memset(&txc, 0, sizeof(struct timex));
1235
1236 if (get_user(txc.modes, &utp->modes) ||
1237 __get_user(txc.offset, &utp->offset) ||
1238 __get_user(txc.freq, &utp->freq) ||
1239 __get_user(txc.maxerror, &utp->maxerror) ||
1240 __get_user(txc.esterror, &utp->esterror) ||
1241 __get_user(txc.status, &utp->status) ||
1242 __get_user(txc.constant, &utp->constant) ||
1243 __get_user(txc.precision, &utp->precision) ||
1244 __get_user(txc.tolerance, &utp->tolerance) ||
1245 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1246 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1247 __get_user(txc.tick, &utp->tick) ||
1248 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1249 __get_user(txc.jitter, &utp->jitter) ||
1250 __get_user(txc.shift, &utp->shift) ||
1251 __get_user(txc.stabil, &utp->stabil) ||
1252 __get_user(txc.jitcnt, &utp->jitcnt) ||
1253 __get_user(txc.calcnt, &utp->calcnt) ||
1254 __get_user(txc.errcnt, &utp->errcnt) ||
1255 __get_user(txc.stbcnt, &utp->stbcnt))
1256 return -EFAULT;
1257
1258 ret = do_adjtimex(&txc);
1259
1260 if (put_user(txc.modes, &utp->modes) ||
1261 __put_user(txc.offset, &utp->offset) ||
1262 __put_user(txc.freq, &utp->freq) ||
1263 __put_user(txc.maxerror, &utp->maxerror) ||
1264 __put_user(txc.esterror, &utp->esterror) ||
1265 __put_user(txc.status, &utp->status) ||
1266 __put_user(txc.constant, &utp->constant) ||
1267 __put_user(txc.precision, &utp->precision) ||
1268 __put_user(txc.tolerance, &utp->tolerance) ||
1269 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1270 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1271 __put_user(txc.tick, &utp->tick) ||
1272 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1273 __put_user(txc.jitter, &utp->jitter) ||
1274 __put_user(txc.shift, &utp->shift) ||
1275 __put_user(txc.stabil, &utp->stabil) ||
1276 __put_user(txc.jitcnt, &utp->jitcnt) ||
1277 __put_user(txc.calcnt, &utp->calcnt) ||
1278 __put_user(txc.errcnt, &utp->errcnt) ||
1279 __put_user(txc.stbcnt, &utp->stbcnt))
1280 ret = -EFAULT;
1281
1282 return ret;
1283 }
1284
1285 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset,
1286 s32 count)
1287 {
1288 mm_segment_t old_fs = get_fs();
1289 int ret;
1290 off_t of;
1291
1292 if (offset && get_user(of, offset))
1293 return -EFAULT;
1294
1295 set_fs(KERNEL_DS);
1296 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
1297 set_fs(old_fs);
1298
1299 if (offset && put_user(of, offset))
1300 return -EFAULT;
1301
1302 return ret;
1303 }
1304
1305 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1306 size_t count)
1307 {
1308 return sys_readahead(fd, merge_64(a2, a3), count);
1309 }
1310
1311 /* Argument list sizes for sys_socketcall */
1312 #define AL(x) ((x) * sizeof(unsigned int))
1313 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1314 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1315 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1316 #undef AL
1317
1318 /*
1319 * System call vectors.
1320 *
1321 * Argument checking cleaned up. Saved 20% in size.
1322 * This function doesn't need to set the kernel lock because
1323 * it is set by the callees.
1324 */
1325
1326 asmlinkage long sys32_socketcall(int call, unsigned int *args32)
1327 {
1328 unsigned int a[6];
1329 unsigned int a0,a1;
1330 int err;
1331
1332 extern asmlinkage long sys_socket(int family, int type, int protocol);
1333 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1334 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1335 extern asmlinkage long sys_listen(int fd, int backlog);
1336 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1337 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1338 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1339 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1340 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1341 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1342 struct sockaddr __user *addr, int addr_len);
1343 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1344 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1345 struct sockaddr __user *addr, int __user *addr_len);
1346 extern asmlinkage long sys_shutdown(int fd, int how);
1347 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1348 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int *optlen);
1349 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1350 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1351
1352
1353 if(call<1||call>SYS_RECVMSG)
1354 return -EINVAL;
1355
1356 /* copy_from_user should be SMP safe. */
1357 if (copy_from_user(a, args32, socketcall_nargs[call]))
1358 return -EFAULT;
1359
1360 a0=a[0];
1361 a1=a[1];
1362
1363 switch(call)
1364 {
1365 case SYS_SOCKET:
1366 err = sys_socket(a0,a1,a[2]);
1367 break;
1368 case SYS_BIND:
1369 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1370 break;
1371 case SYS_CONNECT:
1372 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1373 break;
1374 case SYS_LISTEN:
1375 err = sys_listen(a0,a1);
1376 break;
1377 case SYS_ACCEPT:
1378 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1379 break;
1380 case SYS_GETSOCKNAME:
1381 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1382 break;
1383 case SYS_GETPEERNAME:
1384 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1385 break;
1386 case SYS_SOCKETPAIR:
1387 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1388 break;
1389 case SYS_SEND:
1390 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1391 break;
1392 case SYS_SENDTO:
1393 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1394 (struct sockaddr __user *)A(a[4]), a[5]);
1395 break;
1396 case SYS_RECV:
1397 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1398 break;
1399 case SYS_RECVFROM:
1400 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1401 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1402 break;
1403 case SYS_SHUTDOWN:
1404 err = sys_shutdown(a0,a1);
1405 break;
1406 case SYS_SETSOCKOPT:
1407 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1408 break;
1409 case SYS_GETSOCKOPT:
1410 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1411 break;
1412 case SYS_SENDMSG:
1413 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1414 break;
1415 case SYS_RECVMSG:
1416 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1417 break;
1418 default:
1419 err = -EINVAL;
1420 break;
1421 }
1422 return err;
1423 }
1424
1425 struct sigevent32 {
1426 u32 sigev_value;
1427 u32 sigev_signo;
1428 u32 sigev_notify;
1429 u32 payload[(64 / 4) - 3];
1430 };
1431
1432 extern asmlinkage long
1433 sys_timer_create(clockid_t which_clock,
1434 struct sigevent __user *timer_event_spec,
1435 timer_t __user * created_timer_id);
1436
1437 long
1438 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1439 {
1440 struct sigevent __user *p = NULL;
1441 if (se32) {
1442 struct sigevent se;
1443 p = compat_alloc_user_space(sizeof(struct sigevent));
1444 memset(&se, 0, sizeof(struct sigevent));
1445 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1446 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1447 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1448 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1449 sizeof(se32->payload)) ||
1450 copy_to_user(p, &se, sizeof(se)))
1451 return -EFAULT;
1452 }
1453 return sys_timer_create(clock, p, timer_id);
1454 }
1455
1456 save_static_function(sys32_clone);
1457 __attribute_used__ noinline static int
1458 _sys32_clone(nabi_no_regargs struct pt_regs regs)
1459 {
1460 unsigned long clone_flags;
1461 unsigned long newsp;
1462 int __user *parent_tidptr, *child_tidptr;
1463
1464 clone_flags = regs.regs[4];
1465 newsp = regs.regs[5];
1466 if (!newsp)
1467 newsp = regs.regs[29];
1468 parent_tidptr = (int *) regs.regs[6];
1469
1470 /* Use __dummy4 instead of getting it off the stack, so that
1471 syscall() works. */
1472 child_tidptr = (int __user *) __dummy4;
1473 return do_fork(clone_flags, newsp, &regs, 0,
1474 parent_tidptr, child_tidptr);
1475 }
1476
1477 extern asmlinkage void sys_set_thread_area(u32 addr);
1478 asmlinkage void sys32_set_thread_area(u32 addr)
1479 {
1480 sys_set_thread_area(AA(addr));
1481 }
Linux kernel - Deliverables
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