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Linux-2.6.12-rc2
[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/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 struct rusage32 {
219 struct compat_timeval ru_utime;
220 struct compat_timeval ru_stime;
221 int ru_maxrss;
222 int ru_ixrss;
223 int ru_idrss;
224 int ru_isrss;
225 int ru_minflt;
226 int ru_majflt;
227 int ru_nswap;
228 int ru_inblock;
229 int ru_oublock;
230 int ru_msgsnd;
231 int ru_msgrcv;
232 int ru_nsignals;
233 int ru_nvcsw;
234 int ru_nivcsw;
235 };
236
237 static int
238 put_rusage (struct rusage32 *ru, struct rusage *r)
239 {
240 int err;
241
242 if (!access_ok(VERIFY_WRITE, ru, sizeof *ru))
243 return -EFAULT;
244
245 err = __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec);
246 err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec);
247 err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec);
248 err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec);
249 err |= __put_user (r->ru_maxrss, &ru->ru_maxrss);
250 err |= __put_user (r->ru_ixrss, &ru->ru_ixrss);
251 err |= __put_user (r->ru_idrss, &ru->ru_idrss);
252 err |= __put_user (r->ru_isrss, &ru->ru_isrss);
253 err |= __put_user (r->ru_minflt, &ru->ru_minflt);
254 err |= __put_user (r->ru_majflt, &ru->ru_majflt);
255 err |= __put_user (r->ru_nswap, &ru->ru_nswap);
256 err |= __put_user (r->ru_inblock, &ru->ru_inblock);
257 err |= __put_user (r->ru_oublock, &ru->ru_oublock);
258 err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd);
259 err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv);
260 err |= __put_user (r->ru_nsignals, &ru->ru_nsignals);
261 err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw);
262 err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw);
263
264 return err;
265 }
266
267 asmlinkage int
268 sys32_wait4(compat_pid_t pid, unsigned int * stat_addr, int options,
269 struct rusage32 * ru)
270 {
271 if (!ru)
272 return sys_wait4(pid, stat_addr, options, NULL);
273 else {
274 struct rusage r;
275 int ret;
276 unsigned int status;
277 mm_segment_t old_fs = get_fs();
278
279 set_fs(KERNEL_DS);
280 ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
281 set_fs(old_fs);
282 if (put_rusage (ru, &r)) return -EFAULT;
283 if (stat_addr && put_user (status, stat_addr))
284 return -EFAULT;
285 return ret;
286 }
287 }
288
289 asmlinkage int
290 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
291 {
292 return sys32_wait4(pid, stat_addr, options, NULL);
293 }
294
295 struct sysinfo32 {
296 s32 uptime;
297 u32 loads[3];
298 u32 totalram;
299 u32 freeram;
300 u32 sharedram;
301 u32 bufferram;
302 u32 totalswap;
303 u32 freeswap;
304 u16 procs;
305 u32 totalhigh;
306 u32 freehigh;
307 u32 mem_unit;
308 char _f[8];
309 };
310
311 asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
312 {
313 struct sysinfo s;
314 int ret, err;
315 mm_segment_t old_fs = get_fs ();
316
317 set_fs (KERNEL_DS);
318 ret = sys_sysinfo(&s);
319 set_fs (old_fs);
320 err = put_user (s.uptime, &info->uptime);
321 err |= __put_user (s.loads[0], &info->loads[0]);
322 err |= __put_user (s.loads[1], &info->loads[1]);
323 err |= __put_user (s.loads[2], &info->loads[2]);
324 err |= __put_user (s.totalram, &info->totalram);
325 err |= __put_user (s.freeram, &info->freeram);
326 err |= __put_user (s.sharedram, &info->sharedram);
327 err |= __put_user (s.bufferram, &info->bufferram);
328 err |= __put_user (s.totalswap, &info->totalswap);
329 err |= __put_user (s.freeswap, &info->freeswap);
330 err |= __put_user (s.procs, &info->procs);
331 err |= __put_user (s.totalhigh, &info->totalhigh);
332 err |= __put_user (s.freehigh, &info->freehigh);
333 err |= __put_user (s.mem_unit, &info->mem_unit);
334 if (err)
335 return -EFAULT;
336 return ret;
337 }
338
339 #define RLIM_INFINITY32 0x7fffffff
340 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
341
342 struct rlimit32 {
343 int rlim_cur;
344 int rlim_max;
345 };
346
347 #ifdef __MIPSEB__
348 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
349 int length_hi, int length_lo)
350 #endif
351 #ifdef __MIPSEL__
352 asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy,
353 int length_lo, int length_hi)
354 #endif
355 {
356 loff_t length;
357
358 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
359
360 return sys_truncate(path, length);
361 }
362
363 #ifdef __MIPSEB__
364 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
365 int length_hi, int length_lo)
366 #endif
367 #ifdef __MIPSEL__
368 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
369 int length_lo, int length_hi)
370 #endif
371 {
372 loff_t length;
373
374 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
375
376 return sys_ftruncate(fd, length);
377 }
378
379 static inline long
380 get_tv32(struct timeval *o, struct compat_timeval *i)
381 {
382 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
383 (__get_user(o->tv_sec, &i->tv_sec) |
384 __get_user(o->tv_usec, &i->tv_usec)));
385 }
386
387 static inline long
388 put_tv32(struct compat_timeval *o, struct timeval *i)
389 {
390 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
391 (__put_user(i->tv_sec, &o->tv_sec) |
392 __put_user(i->tv_usec, &o->tv_usec)));
393 }
394
395 extern struct timezone sys_tz;
396
397 asmlinkage int
398 sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
399 {
400 if (tv) {
401 struct timeval ktv;
402 do_gettimeofday(&ktv);
403 if (put_tv32(tv, &ktv))
404 return -EFAULT;
405 }
406 if (tz) {
407 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
408 return -EFAULT;
409 }
410 return 0;
411 }
412
413 static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
414 {
415 long usec;
416
417 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
418 return -EFAULT;
419 if (__get_user(o->tv_sec, &i->tv_sec))
420 return -EFAULT;
421 if (__get_user(usec, &i->tv_usec))
422 return -EFAULT;
423 o->tv_nsec = usec * 1000;
424 return 0;
425 }
426
427 asmlinkage int
428 sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
429 {
430 struct timespec kts;
431 struct timezone ktz;
432
433 if (tv) {
434 if (get_ts32(&kts, tv))
435 return -EFAULT;
436 }
437 if (tz) {
438 if (copy_from_user(&ktz, tz, sizeof(ktz)))
439 return -EFAULT;
440 }
441
442 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
443 }
444
445 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
446 unsigned int offset_low, loff_t * result,
447 unsigned int origin)
448 {
449 return sys_llseek(fd, offset_high, offset_low, result, origin);
450 }
451
452 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
453 lseek back to original location. They fail just like lseek does on
454 non-seekable files. */
455
456 asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf,
457 size_t count, u32 unused, u64 a4, u64 a5)
458 {
459 ssize_t ret;
460 struct file * file;
461 ssize_t (*read)(struct file *, char *, size_t, loff_t *);
462 loff_t pos;
463
464 ret = -EBADF;
465 file = fget(fd);
466 if (!file)
467 goto bad_file;
468 if (!(file->f_mode & FMODE_READ))
469 goto out;
470 pos = merge_64(a4, a5);
471 ret = rw_verify_area(READ, file, &pos, count);
472 if (ret)
473 goto out;
474 ret = -EINVAL;
475 if (!file->f_op || !(read = file->f_op->read))
476 goto out;
477 if (pos < 0)
478 goto out;
479 ret = -ESPIPE;
480 if (!(file->f_mode & FMODE_PREAD))
481 goto out;
482 ret = read(file, buf, count, &pos);
483 if (ret > 0)
484 dnotify_parent(file->f_dentry, DN_ACCESS);
485 out:
486 fput(file);
487 bad_file:
488 return ret;
489 }
490
491 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf,
492 size_t count, u32 unused, u64 a4, u64 a5)
493 {
494 ssize_t ret;
495 struct file * file;
496 ssize_t (*write)(struct file *, const char *, size_t, loff_t *);
497 loff_t pos;
498
499 ret = -EBADF;
500 file = fget(fd);
501 if (!file)
502 goto bad_file;
503 if (!(file->f_mode & FMODE_WRITE))
504 goto out;
505 pos = merge_64(a4, a5);
506 ret = rw_verify_area(WRITE, file, &pos, count);
507 if (ret)
508 goto out;
509 ret = -EINVAL;
510 if (!file->f_op || !(write = file->f_op->write))
511 goto out;
512 if (pos < 0)
513 goto out;
514
515 ret = -ESPIPE;
516 if (!(file->f_mode & FMODE_PWRITE))
517 goto out;
518
519 ret = write(file, buf, count, &pos);
520 if (ret > 0)
521 dnotify_parent(file->f_dentry, DN_MODIFY);
522 out:
523 fput(file);
524 bad_file:
525 return ret;
526 }
527
528 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
529 struct compat_timespec *interval)
530 {
531 struct timespec t;
532 int ret;
533 mm_segment_t old_fs = get_fs ();
534
535 set_fs (KERNEL_DS);
536 ret = sys_sched_rr_get_interval(pid, &t);
537 set_fs (old_fs);
538 if (put_user (t.tv_sec, &interval->tv_sec) ||
539 __put_user (t.tv_nsec, &interval->tv_nsec))
540 return -EFAULT;
541 return ret;
542 }
543
544 struct msgbuf32 { s32 mtype; char mtext[1]; };
545
546 struct ipc_perm32
547 {
548 key_t key;
549 compat_uid_t uid;
550 compat_gid_t gid;
551 compat_uid_t cuid;
552 compat_gid_t cgid;
553 compat_mode_t mode;
554 unsigned short seq;
555 };
556
557 struct ipc64_perm32 {
558 key_t key;
559 compat_uid_t uid;
560 compat_gid_t gid;
561 compat_uid_t cuid;
562 compat_gid_t cgid;
563 compat_mode_t mode;
564 unsigned short seq;
565 unsigned short __pad1;
566 unsigned int __unused1;
567 unsigned int __unused2;
568 };
569
570 struct semid_ds32 {
571 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
572 compat_time_t sem_otime; /* last semop time */
573 compat_time_t sem_ctime; /* last change time */
574 u32 sem_base; /* ptr to first semaphore in array */
575 u32 sem_pending; /* pending operations to be processed */
576 u32 sem_pending_last; /* last pending operation */
577 u32 undo; /* undo requests on this array */
578 unsigned short sem_nsems; /* no. of semaphores in array */
579 };
580
581 struct semid64_ds32 {
582 struct ipc64_perm32 sem_perm;
583 compat_time_t sem_otime;
584 compat_time_t sem_ctime;
585 unsigned int sem_nsems;
586 unsigned int __unused1;
587 unsigned int __unused2;
588 };
589
590 struct msqid_ds32
591 {
592 struct ipc_perm32 msg_perm;
593 u32 msg_first;
594 u32 msg_last;
595 compat_time_t msg_stime;
596 compat_time_t msg_rtime;
597 compat_time_t msg_ctime;
598 u32 wwait;
599 u32 rwait;
600 unsigned short msg_cbytes;
601 unsigned short msg_qnum;
602 unsigned short msg_qbytes;
603 compat_ipc_pid_t msg_lspid;
604 compat_ipc_pid_t msg_lrpid;
605 };
606
607 struct msqid64_ds32 {
608 struct ipc64_perm32 msg_perm;
609 compat_time_t msg_stime;
610 unsigned int __unused1;
611 compat_time_t msg_rtime;
612 unsigned int __unused2;
613 compat_time_t msg_ctime;
614 unsigned int __unused3;
615 unsigned int msg_cbytes;
616 unsigned int msg_qnum;
617 unsigned int msg_qbytes;
618 compat_pid_t msg_lspid;
619 compat_pid_t msg_lrpid;
620 unsigned int __unused4;
621 unsigned int __unused5;
622 };
623
624 struct shmid_ds32 {
625 struct ipc_perm32 shm_perm;
626 int shm_segsz;
627 compat_time_t shm_atime;
628 compat_time_t shm_dtime;
629 compat_time_t shm_ctime;
630 compat_ipc_pid_t shm_cpid;
631 compat_ipc_pid_t shm_lpid;
632 unsigned short shm_nattch;
633 };
634
635 struct shmid64_ds32 {
636 struct ipc64_perm32 shm_perm;
637 compat_size_t shm_segsz;
638 compat_time_t shm_atime;
639 compat_time_t shm_dtime;
640 compat_time_t shm_ctime;
641 compat_pid_t shm_cpid;
642 compat_pid_t shm_lpid;
643 unsigned int shm_nattch;
644 unsigned int __unused1;
645 unsigned int __unused2;
646 };
647
648 struct ipc_kludge32 {
649 u32 msgp;
650 s32 msgtyp;
651 };
652
653 static int
654 do_sys32_semctl(int first, int second, int third, void *uptr)
655 {
656 union semun fourth;
657 u32 pad;
658 int err, err2;
659 struct semid64_ds s;
660 mm_segment_t old_fs;
661
662 if (!uptr)
663 return -EINVAL;
664 err = -EFAULT;
665 if (get_user (pad, (u32 *)uptr))
666 return err;
667 if ((third & ~IPC_64) == SETVAL)
668 fourth.val = (int)pad;
669 else
670 fourth.__pad = (void *)A(pad);
671 switch (third & ~IPC_64) {
672 case IPC_INFO:
673 case IPC_RMID:
674 case IPC_SET:
675 case SEM_INFO:
676 case GETVAL:
677 case GETPID:
678 case GETNCNT:
679 case GETZCNT:
680 case GETALL:
681 case SETVAL:
682 case SETALL:
683 err = sys_semctl (first, second, third, fourth);
684 break;
685
686 case IPC_STAT:
687 case SEM_STAT:
688 fourth.__pad = &s;
689 old_fs = get_fs();
690 set_fs(KERNEL_DS);
691 err = sys_semctl(first, second, third | IPC_64, fourth);
692 set_fs(old_fs);
693
694 if (third & IPC_64) {
695 struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad);
696
697 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
698 err = -EFAULT;
699 break;
700 }
701 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
702 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
703 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
704 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
705 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
706 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
707 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
708 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
709 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
710 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
711 } else {
712 struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad);
713
714 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
715 err = -EFAULT;
716 break;
717 }
718 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
719 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
720 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
721 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
722 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
723 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
724 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
725 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
726 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
727 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
728 }
729 if (err2)
730 err = -EFAULT;
731 break;
732
733 default:
734 err = - EINVAL;
735 break;
736 }
737
738 return err;
739 }
740
741 static int
742 do_sys32_msgsnd (int first, int second, int third, void *uptr)
743 {
744 struct msgbuf32 *up = (struct msgbuf32 *)uptr;
745 struct msgbuf *p;
746 mm_segment_t old_fs;
747 int err;
748
749 if (second < 0)
750 return -EINVAL;
751 p = kmalloc (second + sizeof (struct msgbuf)
752 + 4, GFP_USER);
753 if (!p)
754 return -ENOMEM;
755 err = get_user (p->mtype, &up->mtype);
756 if (err)
757 goto out;
758 err |= __copy_from_user (p->mtext, &up->mtext, second);
759 if (err)
760 goto out;
761 old_fs = get_fs ();
762 set_fs (KERNEL_DS);
763 err = sys_msgsnd (first, p, second, third);
764 set_fs (old_fs);
765 out:
766 kfree (p);
767
768 return err;
769 }
770
771 static int
772 do_sys32_msgrcv (int first, int second, int msgtyp, int third,
773 int version, void *uptr)
774 {
775 struct msgbuf32 *up;
776 struct msgbuf *p;
777 mm_segment_t old_fs;
778 int err;
779
780 if (!version) {
781 struct ipc_kludge32 *uipck = (struct ipc_kludge32 *)uptr;
782 struct ipc_kludge32 ipck;
783
784 err = -EINVAL;
785 if (!uptr)
786 goto out;
787 err = -EFAULT;
788 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
789 goto out;
790 uptr = (void *)AA(ipck.msgp);
791 msgtyp = ipck.msgtyp;
792 }
793
794 if (second < 0)
795 return -EINVAL;
796 err = -ENOMEM;
797 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
798 if (!p)
799 goto out;
800 old_fs = get_fs ();
801 set_fs (KERNEL_DS);
802 err = sys_msgrcv (first, p, second + 4, msgtyp, third);
803 set_fs (old_fs);
804 if (err < 0)
805 goto free_then_out;
806 up = (struct msgbuf32 *)uptr;
807 if (put_user (p->mtype, &up->mtype) ||
808 __copy_to_user (&up->mtext, p->mtext, err))
809 err = -EFAULT;
810 free_then_out:
811 kfree (p);
812 out:
813 return err;
814 }
815
816 static int
817 do_sys32_msgctl (int first, int second, void *uptr)
818 {
819 int err = -EINVAL, err2;
820 struct msqid64_ds m;
821 struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
822 struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
823 mm_segment_t old_fs;
824
825 switch (second & ~IPC_64) {
826 case IPC_INFO:
827 case IPC_RMID:
828 case MSG_INFO:
829 err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
830 break;
831
832 case IPC_SET:
833 if (second & IPC_64) {
834 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
835 err = -EFAULT;
836 break;
837 }
838 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
839 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
840 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
841 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
842 } else {
843 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
844 err = -EFAULT;
845 break;
846 }
847 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
848 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
849 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
850 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
851 }
852 if (err)
853 break;
854 old_fs = get_fs();
855 set_fs(KERNEL_DS);
856 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
857 set_fs(old_fs);
858 break;
859
860 case IPC_STAT:
861 case MSG_STAT:
862 old_fs = get_fs();
863 set_fs(KERNEL_DS);
864 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m);
865 set_fs(old_fs);
866 if (second & IPC_64) {
867 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
868 err = -EFAULT;
869 break;
870 }
871 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
872 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
873 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
874 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
875 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
876 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
877 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
878 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
879 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
880 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
881 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
882 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
883 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
884 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
885 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
886 if (err2)
887 err = -EFAULT;
888 } else {
889 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
890 err = -EFAULT;
891 break;
892 }
893 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
894 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
895 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
896 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
897 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
898 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
899 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
900 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
901 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
902 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
903 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
904 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
905 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
906 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
907 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
908 if (err2)
909 err = -EFAULT;
910 }
911 break;
912 }
913
914 return err;
915 }
916
917 static int
918 do_sys32_shmat (int first, int second, int third, int version, void *uptr)
919 {
920 unsigned long raddr;
921 u32 *uaddr = (u32 *)A((u32)third);
922 int err = -EINVAL;
923
924 if (version == 1)
925 return err;
926 err = do_shmat (first, uptr, second, &raddr);
927 if (err)
928 return err;
929 err = put_user (raddr, uaddr);
930 return err;
931 }
932
933 struct shm_info32 {
934 int used_ids;
935 u32 shm_tot, shm_rss, shm_swp;
936 u32 swap_attempts, swap_successes;
937 };
938
939 static int
940 do_sys32_shmctl (int first, int second, void *uptr)
941 {
942 struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
943 struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
944 struct shm_info32 *uip = (struct shm_info32 *)uptr;
945 int err = -EFAULT, err2;
946 struct shmid64_ds s64;
947 mm_segment_t old_fs;
948 struct shm_info si;
949 struct shmid_ds s;
950
951 switch (second & ~IPC_64) {
952 case IPC_INFO:
953 second = IPC_INFO; /* So that we don't have to translate it */
954 case IPC_RMID:
955 case SHM_LOCK:
956 case SHM_UNLOCK:
957 err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
958 break;
959 case IPC_SET:
960 if (second & IPC_64) {
961 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
962 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
963 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
964 } else {
965 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
966 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
967 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
968 }
969 if (err)
970 break;
971 old_fs = get_fs();
972 set_fs(KERNEL_DS);
973 err = sys_shmctl(first, second & ~IPC_64, &s);
974 set_fs(old_fs);
975 break;
976
977 case IPC_STAT:
978 case SHM_STAT:
979 old_fs = get_fs();
980 set_fs(KERNEL_DS);
981 err = sys_shmctl(first, second | IPC_64, (void *) &s64);
982 set_fs(old_fs);
983 if (err < 0)
984 break;
985 if (second & IPC_64) {
986 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
987 err = -EFAULT;
988 break;
989 }
990 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
991 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
992 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
993 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
994 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
995 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
996 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
997 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
998 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
999 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
1000 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
1001 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
1002 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
1003 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
1004 } else {
1005 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
1006 err = -EFAULT;
1007 break;
1008 }
1009 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
1010 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
1011 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
1012 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
1013 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
1014 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
1015 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
1016 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
1017 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
1018 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
1019 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
1020 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
1021 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
1022 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
1023 }
1024 if (err2)
1025 err = -EFAULT;
1026 break;
1027
1028 case SHM_INFO:
1029 old_fs = get_fs();
1030 set_fs(KERNEL_DS);
1031 err = sys_shmctl(first, second, (void *)&si);
1032 set_fs(old_fs);
1033 if (err < 0)
1034 break;
1035 err2 = put_user(si.used_ids, &uip->used_ids);
1036 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
1037 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
1038 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
1039 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
1040 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
1041 if (err2)
1042 err = -EFAULT;
1043 break;
1044
1045 default:
1046 err = -EINVAL;
1047 break;
1048 }
1049
1050 return err;
1051 }
1052
1053 static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems,
1054 const struct compat_timespec *timeout32)
1055 {
1056 struct compat_timespec t32;
1057 struct timespec *t64 = compat_alloc_user_space(sizeof(*t64));
1058
1059 if (copy_from_user(&t32, timeout32, sizeof(t32)))
1060 return -EFAULT;
1061
1062 if (put_user(t32.tv_sec, &t64->tv_sec) ||
1063 put_user(t32.tv_nsec, &t64->tv_nsec))
1064 return -EFAULT;
1065
1066 return sys_semtimedop(semid, tsems, nsems, t64);
1067 }
1068
1069 asmlinkage long
1070 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
1071 {
1072 int version, err;
1073
1074 version = call >> 16; /* hack for backward compatibility */
1075 call &= 0xffff;
1076
1077 switch (call) {
1078 case SEMOP:
1079 /* struct sembuf is the same on 32 and 64bit :)) */
1080 err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second,
1081 NULL);
1082 break;
1083 case SEMTIMEDOP:
1084 err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second,
1085 (const struct compat_timespec __user *)AA(fifth));
1086 break;
1087 case SEMGET:
1088 err = sys_semget (first, second, third);
1089 break;
1090 case SEMCTL:
1091 err = do_sys32_semctl (first, second, third,
1092 (void *)AA(ptr));
1093 break;
1094
1095 case MSGSND:
1096 err = do_sys32_msgsnd (first, second, third,
1097 (void *)AA(ptr));
1098 break;
1099 case MSGRCV:
1100 err = do_sys32_msgrcv (first, second, fifth, third,
1101 version, (void *)AA(ptr));
1102 break;
1103 case MSGGET:
1104 err = sys_msgget ((key_t) first, second);
1105 break;
1106 case MSGCTL:
1107 err = do_sys32_msgctl (first, second, (void *)AA(ptr));
1108 break;
1109
1110 case SHMAT:
1111 err = do_sys32_shmat (first, second, third,
1112 version, (void *)AA(ptr));
1113 break;
1114 case SHMDT:
1115 err = sys_shmdt ((char *)A(ptr));
1116 break;
1117 case SHMGET:
1118 err = sys_shmget (first, (unsigned)second, third);
1119 break;
1120 case SHMCTL:
1121 err = do_sys32_shmctl (first, second, (void *)AA(ptr));
1122 break;
1123 default:
1124 err = -EINVAL;
1125 break;
1126 }
1127
1128 return err;
1129 }
1130
1131 asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
1132 int shmflg, int32_t *addr)
1133 {
1134 unsigned long raddr;
1135 int err;
1136
1137 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1138 if (err)
1139 return err;
1140
1141 return put_user(raddr, addr);
1142 }
1143
1144 struct sysctl_args32
1145 {
1146 compat_caddr_t name;
1147 int nlen;
1148 compat_caddr_t oldval;
1149 compat_caddr_t oldlenp;
1150 compat_caddr_t newval;
1151 compat_size_t newlen;
1152 unsigned int __unused[4];
1153 };
1154
1155 #ifdef CONFIG_SYSCTL
1156
1157 asmlinkage long sys32_sysctl(struct sysctl_args32 *args)
1158 {
1159 struct sysctl_args32 tmp;
1160 int error;
1161 size_t oldlen, *oldlenp = NULL;
1162 unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7;
1163
1164 if (copy_from_user(&tmp, args, sizeof(tmp)))
1165 return -EFAULT;
1166
1167 if (tmp.oldval && tmp.oldlenp) {
1168 /* Duh, this is ugly and might not work if sysctl_args
1169 is in read-only memory, but do_sysctl does indirectly
1170 a lot of uaccess in both directions and we'd have to
1171 basically copy the whole sysctl.c here, and
1172 glibc's __sysctl uses rw memory for the structure
1173 anyway. */
1174 if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) ||
1175 put_user(oldlen, (size_t *)addr))
1176 return -EFAULT;
1177 oldlenp = (size_t *)addr;
1178 }
1179
1180 lock_kernel();
1181 error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval),
1182 oldlenp, (void *)A(tmp.newval), tmp.newlen);
1183 unlock_kernel();
1184 if (oldlenp) {
1185 if (!error) {
1186 if (get_user(oldlen, (size_t *)addr) ||
1187 put_user(oldlen, (u32 *)A(tmp.oldlenp)))
1188 error = -EFAULT;
1189 }
1190 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1191 }
1192 return error;
1193 }
1194
1195 #endif /* CONFIG_SYSCTL */
1196
1197 asmlinkage long sys32_newuname(struct new_utsname * name)
1198 {
1199 int ret = 0;
1200
1201 down_read(&uts_sem);
1202 if (copy_to_user(name,&system_utsname,sizeof *name))
1203 ret = -EFAULT;
1204 up_read(&uts_sem);
1205
1206 if (current->personality == PER_LINUX32 && !ret)
1207 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1208 ret = -EFAULT;
1209
1210 return ret;
1211 }
1212
1213 asmlinkage int sys32_personality(unsigned long personality)
1214 {
1215 int ret;
1216 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1217 personality = PER_LINUX32;
1218 ret = sys_personality(personality);
1219 if (ret == PER_LINUX32)
1220 ret = PER_LINUX;
1221 return ret;
1222 }
1223
1224 /* ustat compatibility */
1225 struct ustat32 {
1226 compat_daddr_t f_tfree;
1227 compat_ino_t f_tinode;
1228 char f_fname[6];
1229 char f_fpack[6];
1230 };
1231
1232 extern asmlinkage long sys_ustat(dev_t dev, struct ustat * ubuf);
1233
1234 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 * ubuf32)
1235 {
1236 int err;
1237 struct ustat tmp;
1238 struct ustat32 tmp32;
1239 mm_segment_t old_fs = get_fs();
1240
1241 set_fs(KERNEL_DS);
1242 err = sys_ustat(dev, &tmp);
1243 set_fs (old_fs);
1244
1245 if (err)
1246 goto out;
1247
1248 memset(&tmp32,0,sizeof(struct ustat32));
1249 tmp32.f_tfree = tmp.f_tfree;
1250 tmp32.f_tinode = tmp.f_tinode;
1251
1252 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1253
1254 out:
1255 return err;
1256 }
1257
1258 /* Handle adjtimex compatibility. */
1259
1260 struct timex32 {
1261 u32 modes;
1262 s32 offset, freq, maxerror, esterror;
1263 s32 status, constant, precision, tolerance;
1264 struct compat_timeval time;
1265 s32 tick;
1266 s32 ppsfreq, jitter, shift, stabil;
1267 s32 jitcnt, calcnt, errcnt, stbcnt;
1268 s32 :32; s32 :32; s32 :32; s32 :32;
1269 s32 :32; s32 :32; s32 :32; s32 :32;
1270 s32 :32; s32 :32; s32 :32; s32 :32;
1271 };
1272
1273 extern int do_adjtimex(struct timex *);
1274
1275 asmlinkage int sys32_adjtimex(struct timex32 *utp)
1276 {
1277 struct timex txc;
1278 int ret;
1279
1280 memset(&txc, 0, sizeof(struct timex));
1281
1282 if (get_user(txc.modes, &utp->modes) ||
1283 __get_user(txc.offset, &utp->offset) ||
1284 __get_user(txc.freq, &utp->freq) ||
1285 __get_user(txc.maxerror, &utp->maxerror) ||
1286 __get_user(txc.esterror, &utp->esterror) ||
1287 __get_user(txc.status, &utp->status) ||
1288 __get_user(txc.constant, &utp->constant) ||
1289 __get_user(txc.precision, &utp->precision) ||
1290 __get_user(txc.tolerance, &utp->tolerance) ||
1291 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1292 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1293 __get_user(txc.tick, &utp->tick) ||
1294 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1295 __get_user(txc.jitter, &utp->jitter) ||
1296 __get_user(txc.shift, &utp->shift) ||
1297 __get_user(txc.stabil, &utp->stabil) ||
1298 __get_user(txc.jitcnt, &utp->jitcnt) ||
1299 __get_user(txc.calcnt, &utp->calcnt) ||
1300 __get_user(txc.errcnt, &utp->errcnt) ||
1301 __get_user(txc.stbcnt, &utp->stbcnt))
1302 return -EFAULT;
1303
1304 ret = do_adjtimex(&txc);
1305
1306 if (put_user(txc.modes, &utp->modes) ||
1307 __put_user(txc.offset, &utp->offset) ||
1308 __put_user(txc.freq, &utp->freq) ||
1309 __put_user(txc.maxerror, &utp->maxerror) ||
1310 __put_user(txc.esterror, &utp->esterror) ||
1311 __put_user(txc.status, &utp->status) ||
1312 __put_user(txc.constant, &utp->constant) ||
1313 __put_user(txc.precision, &utp->precision) ||
1314 __put_user(txc.tolerance, &utp->tolerance) ||
1315 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1316 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1317 __put_user(txc.tick, &utp->tick) ||
1318 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1319 __put_user(txc.jitter, &utp->jitter) ||
1320 __put_user(txc.shift, &utp->shift) ||
1321 __put_user(txc.stabil, &utp->stabil) ||
1322 __put_user(txc.jitcnt, &utp->jitcnt) ||
1323 __put_user(txc.calcnt, &utp->calcnt) ||
1324 __put_user(txc.errcnt, &utp->errcnt) ||
1325 __put_user(txc.stbcnt, &utp->stbcnt))
1326 ret = -EFAULT;
1327
1328 return ret;
1329 }
1330
1331 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset,
1332 s32 count)
1333 {
1334 mm_segment_t old_fs = get_fs();
1335 int ret;
1336 off_t of;
1337
1338 if (offset && get_user(of, offset))
1339 return -EFAULT;
1340
1341 set_fs(KERNEL_DS);
1342 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
1343 set_fs(old_fs);
1344
1345 if (offset && put_user(of, offset))
1346 return -EFAULT;
1347
1348 return ret;
1349 }
1350
1351 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1352 size_t count)
1353 {
1354 return sys_readahead(fd, merge_64(a2, a3), count);
1355 }
1356
1357 /* Argument list sizes for sys_socketcall */
1358 #define AL(x) ((x) * sizeof(unsigned int))
1359 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1360 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1361 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1362 #undef AL
1363
1364 /*
1365 * System call vectors.
1366 *
1367 * Argument checking cleaned up. Saved 20% in size.
1368 * This function doesn't need to set the kernel lock because
1369 * it is set by the callees.
1370 */
1371
1372 asmlinkage long sys32_socketcall(int call, unsigned int *args32)
1373 {
1374 unsigned int a[6];
1375 unsigned int a0,a1;
1376 int err;
1377
1378 extern asmlinkage long sys_socket(int family, int type, int protocol);
1379 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1380 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1381 extern asmlinkage long sys_listen(int fd, int backlog);
1382 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1383 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1384 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1385 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1386 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1387 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1388 struct sockaddr __user *addr, int addr_len);
1389 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1390 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1391 struct sockaddr __user *addr, int __user *addr_len);
1392 extern asmlinkage long sys_shutdown(int fd, int how);
1393 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
1394 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int *optlen);
1395 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1396 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1397
1398
1399 if(call<1||call>SYS_RECVMSG)
1400 return -EINVAL;
1401
1402 /* copy_from_user should be SMP safe. */
1403 if (copy_from_user(a, args32, socketcall_nargs[call]))
1404 return -EFAULT;
1405
1406 a0=a[0];
1407 a1=a[1];
1408
1409 switch(call)
1410 {
1411 case SYS_SOCKET:
1412 err = sys_socket(a0,a1,a[2]);
1413 break;
1414 case SYS_BIND:
1415 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1416 break;
1417 case SYS_CONNECT:
1418 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1419 break;
1420 case SYS_LISTEN:
1421 err = sys_listen(a0,a1);
1422 break;
1423 case SYS_ACCEPT:
1424 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1425 break;
1426 case SYS_GETSOCKNAME:
1427 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1428 break;
1429 case SYS_GETPEERNAME:
1430 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1431 break;
1432 case SYS_SOCKETPAIR:
1433 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1434 break;
1435 case SYS_SEND:
1436 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1437 break;
1438 case SYS_SENDTO:
1439 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1440 (struct sockaddr __user *)A(a[4]), a[5]);
1441 break;
1442 case SYS_RECV:
1443 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1444 break;
1445 case SYS_RECVFROM:
1446 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1447 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1448 break;
1449 case SYS_SHUTDOWN:
1450 err = sys_shutdown(a0,a1);
1451 break;
1452 case SYS_SETSOCKOPT:
1453 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1454 break;
1455 case SYS_GETSOCKOPT:
1456 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1457 break;
1458 case SYS_SENDMSG:
1459 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1460 break;
1461 case SYS_RECVMSG:
1462 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1463 break;
1464 default:
1465 err = -EINVAL;
1466 break;
1467 }
1468 return err;
1469 }
kernel source for telekom puls (alcatel/mediatek)