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[PATCH] create struct compat_timex and use it everywhere
[deliverable/linux.git] / arch / mips / kernel / linux32.c
CommitLineData
1da177e4
LT		 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
219ac73a 72int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
1da177e4
LT		 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
101asmlinkage unsigned long
102sys32_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;
947df17c
PA		 109 if (pgoff & (~PAGE_MASK >> 12))
110 goto out;
111 pgoff >>= PAGE_SHIFT-12;
112
1da177e4
LT		 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
127out:
128 return error;
129}
130
131
219ac73a 132asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
1da177e4
LT		 133 unsigned int low)
134{
135 if ((int)high < 0)
136 return -EINVAL;
137 return sys_truncate(path, ((long) high << 32) | low);
138}
139
140asmlinkage 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 */
151asmlinkage 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
164out:
165 return error;
166}
167
54f2da75
RB		 168asmlinkage long
169sysn32_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();
219ac73a 176 int si_signo;
54f2da75 177
f3468e0c
RB		 178 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
179 return -EFAULT;
180
54f2da75
RB		 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
219ac73a
AN		 186 if (__get_user(si_signo, &uinfo->si_signo))
187 return -EFAULT;
188 if (ret < 0 || si_signo == 0)
54f2da75
RB		 189 return ret;
190
191 if (uru)
192 ret = put_compat_rusage(&ru, uru);
193 return ret;
194}
195
1da177e4
LT		 196struct 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
219ac73a 212asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
1da177e4
LT		 213{
214 struct sysinfo s;
215 int ret, err;
216 mm_segment_t old_fs = get_fs ();
42a3b4f2 217
1da177e4 218 set_fs (KERNEL_DS);
219ac73a 219 ret = sys_sysinfo((struct sysinfo __user *)&s);
1da177e4
LT		 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
243struct rlimit32 {
244 int rlim_cur;
245 int rlim_max;
246};
247
248#ifdef __MIPSEB__
219ac73a 249asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
1da177e4
LT		 250 int length_hi, int length_lo)
251#endif
252#ifdef __MIPSEL__
219ac73a 253asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
1da177e4
LT		 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__
265asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
266 int length_hi, int length_lo)
267#endif
268#ifdef __MIPSEL__
269asmlinkage 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
280static inline long
219ac73a 281get_tv32(struct timeval *o, struct compat_timeval __user *i)
1da177e4
LT		 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
288static inline long
219ac73a 289put_tv32(struct compat_timeval __user *o, struct timeval *i)
1da177e4
LT		 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
296extern struct timezone sys_tz;
297
298asmlinkage int
219ac73a 299sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
1da177e4
LT		 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
219ac73a 314static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
1da177e4
LT		 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
328asmlinkage int
219ac73a 329sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
1da177e4
LT		 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
346asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
219ac73a 347 unsigned int offset_low, loff_t __user * result,
1da177e4
LT		 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
219ac73a 357asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
1da177e4
LT		 358 size_t count, u32 unused, u64 a4, u64 a5)
359{
360 ssize_t ret;
361 struct file * file;
219ac73a 362 ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
1da177e4
LT		 363 loff_t pos;
364
365 ret = -EBADF;
366 file = fget(fd);
367 if (!file)
368 goto bad_file;
369 if (!(file->f_mode & FMODE_READ))
370 goto out;
371 pos = merge_64(a4, a5);
372 ret = rw_verify_area(READ, file, &pos, count);
e28cc715 373 if (ret < 0)
1da177e4
LT		 374 goto out;
375 ret = -EINVAL;
376 if (!file->f_op || !(read = file->f_op->read))
377 goto out;
378 if (pos < 0)
379 goto out;
380 ret = -ESPIPE;
381 if (!(file->f_mode & FMODE_PREAD))
382 goto out;
383 ret = read(file, buf, count, &pos);
384 if (ret > 0)
385 dnotify_parent(file->f_dentry, DN_ACCESS);
386out:
387 fput(file);
388bad_file:
389 return ret;
390}
391
219ac73a 392asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
1da177e4
LT		 393 size_t count, u32 unused, u64 a4, u64 a5)
394{
395 ssize_t ret;
396 struct file * file;
219ac73a 397 ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
1da177e4
LT		 398 loff_t pos;
399
400 ret = -EBADF;
401 file = fget(fd);
402 if (!file)
403 goto bad_file;
404 if (!(file->f_mode & FMODE_WRITE))
405 goto out;
406 pos = merge_64(a4, a5);
407 ret = rw_verify_area(WRITE, file, &pos, count);
e28cc715 408 if (ret < 0)
1da177e4
LT		 409 goto out;
410 ret = -EINVAL;
411 if (!file->f_op || !(write = file->f_op->write))
412 goto out;
413 if (pos < 0)
414 goto out;
415
416 ret = -ESPIPE;
417 if (!(file->f_mode & FMODE_PWRITE))
418 goto out;
419
420 ret = write(file, buf, count, &pos);
421 if (ret > 0)
422 dnotify_parent(file->f_dentry, DN_MODIFY);
423out:
424 fput(file);
425bad_file:
426 return ret;
427}
428
429asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
219ac73a 430 struct compat_timespec __user *interval)
1da177e4
LT		 431{
432 struct timespec t;
433 int ret;
434 mm_segment_t old_fs = get_fs ();
435
436 set_fs (KERNEL_DS);
219ac73a 437 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
1da177e4
LT		 438 set_fs (old_fs);
439 if (put_user (t.tv_sec, &interval->tv_sec) ||
440 __put_user (t.tv_nsec, &interval->tv_nsec))
441 return -EFAULT;
442 return ret;
443}
444
445struct msgbuf32 { s32 mtype; char mtext[1]; };
446
447struct ipc_perm32
448{
449 key_t key;
202e5979
SR		 450 __compat_uid_t uid;
451 __compat_gid_t gid;
452 __compat_uid_t cuid;
453 __compat_gid_t cgid;
1da177e4
LT		 454 compat_mode_t mode;
455 unsigned short seq;
456};
457
458struct ipc64_perm32 {
459 key_t key;
202e5979
SR		 460 __compat_uid_t uid;
461 __compat_gid_t gid;
462 __compat_uid_t cuid;
463 __compat_gid_t cgid;
42a3b4f2 464 compat_mode_t mode;
1da177e4
LT		 465 unsigned short seq;
466 unsigned short __pad1;
467 unsigned int __unused1;
468 unsigned int __unused2;
469};
470
471struct semid_ds32 {
472 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
473 compat_time_t sem_otime; /* last semop time */
474 compat_time_t sem_ctime; /* last change time */
475 u32 sem_base; /* ptr to first semaphore in array */
476 u32 sem_pending; /* pending operations to be processed */
477 u32 sem_pending_last; /* last pending operation */
478 u32 undo; /* undo requests on this array */
479 unsigned short sem_nsems; /* no. of semaphores in array */
480};
481
482struct semid64_ds32 {
483 struct ipc64_perm32 sem_perm;
484 compat_time_t sem_otime;
485 compat_time_t sem_ctime;
486 unsigned int sem_nsems;
487 unsigned int __unused1;
488 unsigned int __unused2;
489};
490
491struct msqid_ds32
492{
493 struct ipc_perm32 msg_perm;
494 u32 msg_first;
495 u32 msg_last;
496 compat_time_t msg_stime;
497 compat_time_t msg_rtime;
498 compat_time_t msg_ctime;
499 u32 wwait;
500 u32 rwait;
501 unsigned short msg_cbytes;
502 unsigned short msg_qnum;
503 unsigned short msg_qbytes;
504 compat_ipc_pid_t msg_lspid;
505 compat_ipc_pid_t msg_lrpid;
506};
507
508struct msqid64_ds32 {
509 struct ipc64_perm32 msg_perm;
510 compat_time_t msg_stime;
511 unsigned int __unused1;
512 compat_time_t msg_rtime;
513 unsigned int __unused2;
514 compat_time_t msg_ctime;
515 unsigned int __unused3;
516 unsigned int msg_cbytes;
517 unsigned int msg_qnum;
518 unsigned int msg_qbytes;
519 compat_pid_t msg_lspid;
520 compat_pid_t msg_lrpid;
521 unsigned int __unused4;
522 unsigned int __unused5;
523};
524
525struct shmid_ds32 {
526 struct ipc_perm32 shm_perm;
527 int shm_segsz;
528 compat_time_t shm_atime;
529 compat_time_t shm_dtime;
530 compat_time_t shm_ctime;
531 compat_ipc_pid_t shm_cpid;
532 compat_ipc_pid_t shm_lpid;
533 unsigned short shm_nattch;
534};
535
536struct shmid64_ds32 {
537 struct ipc64_perm32 shm_perm;
538 compat_size_t shm_segsz;
539 compat_time_t shm_atime;
540 compat_time_t shm_dtime;
541 compat_time_t shm_ctime;
542 compat_pid_t shm_cpid;
543 compat_pid_t shm_lpid;
544 unsigned int shm_nattch;
545 unsigned int __unused1;
546 unsigned int __unused2;
547};
548
549struct ipc_kludge32 {
550 u32 msgp;
551 s32 msgtyp;
552};
553
554static int
219ac73a 555do_sys32_semctl(int first, int second, int third, void __user *uptr)
1da177e4
LT		 556{
557 union semun fourth;
558 u32 pad;
559 int err, err2;
560 struct semid64_ds s;
561 mm_segment_t old_fs;
562
563 if (!uptr)
564 return -EINVAL;
565 err = -EFAULT;
219ac73a 566 if (get_user (pad, (u32 __user *)uptr))
1da177e4
LT		 567 return err;
568 if ((third & ~IPC_64) == SETVAL)
569 fourth.val = (int)pad;
570 else
219ac73a 571 fourth.__pad = (void __user *)A(pad);
1da177e4
LT		 572 switch (third & ~IPC_64) {
573 case IPC_INFO:
574 case IPC_RMID:
575 case IPC_SET:
576 case SEM_INFO:
577 case GETVAL:
578 case GETPID:
579 case GETNCNT:
580 case GETZCNT:
581 case GETALL:
582 case SETVAL:
583 case SETALL:
584 err = sys_semctl (first, second, third, fourth);
585 break;
586
587 case IPC_STAT:
588 case SEM_STAT:
219ac73a 589 fourth.__pad = (struct semid64_ds __user *)&s;
1da177e4
LT		 590 old_fs = get_fs();
591 set_fs(KERNEL_DS);
592 err = sys_semctl(first, second, third | IPC_64, fourth);
593 set_fs(old_fs);
594
595 if (third & IPC_64) {
219ac73a 596 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
1da177e4
LT		 597
598 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
599 err = -EFAULT;
600 break;
601 }
602 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
603 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
604 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
605 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
606 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
607 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
608 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
609 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
610 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
611 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
612 } else {
219ac73a 613 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
1da177e4
LT		 614
615 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
616 err = -EFAULT;
617 break;
618 }
619 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
620 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
621 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
622 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
623 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
624 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
625 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
626 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
627 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
628 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
629 }
630 if (err2)
631 err = -EFAULT;
632 break;
633
634 default:
635 err = - EINVAL;
636 break;
637 }
638
639 return err;
640}
641
642static int
219ac73a 643do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
1da177e4 644{
219ac73a 645 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 646 struct msgbuf *p;
647 mm_segment_t old_fs;
648 int err;
649
650 if (second < 0)
651 return -EINVAL;
652 p = kmalloc (second + sizeof (struct msgbuf)
653 + 4, GFP_USER);
654 if (!p)
655 return -ENOMEM;
656 err = get_user (p->mtype, &up->mtype);
657 if (err)
658 goto out;
659 err |= __copy_from_user (p->mtext, &up->mtext, second);
660 if (err)
661 goto out;
662 old_fs = get_fs ();
663 set_fs (KERNEL_DS);
219ac73a 664 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
1da177e4
LT		 665 set_fs (old_fs);
666out:
667 kfree (p);
668
669 return err;
670}
671
672static int
673do_sys32_msgrcv (int first, int second, int msgtyp, int third,
219ac73a 674 int version, void __user *uptr)
1da177e4 675{
219ac73a 676 struct msgbuf32 __user *up;
1da177e4
LT		 677 struct msgbuf *p;
678 mm_segment_t old_fs;
679 int err;
680
681 if (!version) {
219ac73a 682 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
1da177e4
LT		 683 struct ipc_kludge32 ipck;
684
685 err = -EINVAL;
686 if (!uptr)
687 goto out;
688 err = -EFAULT;
689 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
690 goto out;
219ac73a 691 uptr = (void __user *)AA(ipck.msgp);
1da177e4
LT		 692 msgtyp = ipck.msgtyp;
693 }
694
695 if (second < 0)
696 return -EINVAL;
697 err = -ENOMEM;
698 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
699 if (!p)
700 goto out;
701 old_fs = get_fs ();
702 set_fs (KERNEL_DS);
219ac73a 703 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
1da177e4
LT		 704 set_fs (old_fs);
705 if (err < 0)
706 goto free_then_out;
219ac73a 707 up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 708 if (put_user (p->mtype, &up->mtype) ||
709 __copy_to_user (&up->mtext, p->mtext, err))
710 err = -EFAULT;
711free_then_out:
712 kfree (p);
713out:
714 return err;
715}
716
717static int
219ac73a 718do_sys32_msgctl (int first, int second, void __user *uptr)
1da177e4
LT		 719{
720 int err = -EINVAL, err2;
721 struct msqid64_ds m;
219ac73a
AN		 722 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
723 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
1da177e4
LT		 724 mm_segment_t old_fs;
725
726 switch (second & ~IPC_64) {
727 case IPC_INFO:
728 case IPC_RMID:
729 case MSG_INFO:
219ac73a 730 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
1da177e4
LT		 731 break;
732
733 case IPC_SET:
734 if (second & IPC_64) {
735 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
736 err = -EFAULT;
737 break;
738 }
739 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
740 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
741 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
742 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
743 } else {
744 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
745 err = -EFAULT;
746 break;
747 }
748 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
749 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
750 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
751 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
752 }
753 if (err)
754 break;
755 old_fs = get_fs();
756 set_fs(KERNEL_DS);
219ac73a 757 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 758 set_fs(old_fs);
759 break;
760
761 case IPC_STAT:
762 case MSG_STAT:
763 old_fs = get_fs();
764 set_fs(KERNEL_DS);
219ac73a 765 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 766 set_fs(old_fs);
767 if (second & IPC_64) {
768 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
769 err = -EFAULT;
770 break;
771 }
772 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
773 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
774 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
775 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
776 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
777 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
778 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
779 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
780 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
781 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
782 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
783 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
784 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
785 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
786 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
787 if (err2)
788 err = -EFAULT;
789 } else {
790 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
791 err = -EFAULT;
792 break;
793 }
794 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
795 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
796 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
797 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
798 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
799 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
800 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
801 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
802 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
803 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
804 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
805 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
806 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
807 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
808 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
809 if (err2)
810 err = -EFAULT;
811 }
812 break;
813 }
814
815 return err;
816}
817
818static int
219ac73a 819do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
1da177e4
LT		 820{
821 unsigned long raddr;
219ac73a 822 u32 __user *uaddr = (u32 __user *)A((u32)third);
1da177e4
LT		 823 int err = -EINVAL;
824
825 if (version == 1)
826 return err;
827 err = do_shmat (first, uptr, second, &raddr);
828 if (err)
829 return err;
830 err = put_user (raddr, uaddr);
831 return err;
832}
833
834struct shm_info32 {
835 int used_ids;
836 u32 shm_tot, shm_rss, shm_swp;
837 u32 swap_attempts, swap_successes;
838};
839
840static int
219ac73a 841do_sys32_shmctl (int first, int second, void __user *uptr)
1da177e4 842{
219ac73a
AN		 843 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
844 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
845 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
1da177e4
LT		 846 int err = -EFAULT, err2;
847 struct shmid64_ds s64;
848 mm_segment_t old_fs;
849 struct shm_info si;
850 struct shmid_ds s;
851
852 switch (second & ~IPC_64) {
853 case IPC_INFO:
854 second = IPC_INFO; /* So that we don't have to translate it */
855 case IPC_RMID:
856 case SHM_LOCK:
857 case SHM_UNLOCK:
219ac73a 858 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
1da177e4
LT		 859 break;
860 case IPC_SET:
861 if (second & IPC_64) {
862 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
863 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
864 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
865 } else {
866 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
867 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
868 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
869 }
870 if (err)
871 break;
872 old_fs = get_fs();
873 set_fs(KERNEL_DS);
219ac73a 874 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
1da177e4
LT		 875 set_fs(old_fs);
876 break;
877
878 case IPC_STAT:
879 case SHM_STAT:
880 old_fs = get_fs();
881 set_fs(KERNEL_DS);
219ac73a 882 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
1da177e4
LT		 883 set_fs(old_fs);
884 if (err < 0)
885 break;
886 if (second & IPC_64) {
887 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
888 err = -EFAULT;
889 break;
890 }
891 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
892 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
893 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
894 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
895 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
896 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
897 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
898 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
899 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
900 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
901 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
902 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
903 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
904 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
905 } else {
906 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
907 err = -EFAULT;
908 break;
909 }
910 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
911 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
912 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
913 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
914 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
915 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
916 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
917 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
918 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
919 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
920 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
921 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
922 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
923 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
924 }
925 if (err2)
926 err = -EFAULT;
927 break;
928
929 case SHM_INFO:
930 old_fs = get_fs();
931 set_fs(KERNEL_DS);
219ac73a 932 err = sys_shmctl(first, second, (void __user *)&si);
1da177e4
LT		 933 set_fs(old_fs);
934 if (err < 0)
935 break;
936 err2 = put_user(si.used_ids, &uip->used_ids);
937 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
938 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
939 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
940 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
941 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
942 if (err2)
943 err = -EFAULT;
944 break;
945
946 default:
947 err = -EINVAL;
948 break;
949 }
950
951 return err;
952}
953
219ac73a
AN		 954static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
955 const struct compat_timespec __user *timeout32)
1da177e4
LT		 956{
957 struct compat_timespec t32;
219ac73a 958 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
1da177e4
LT		 959
960 if (copy_from_user(&t32, timeout32, sizeof(t32)))
961 return -EFAULT;
962
963 if (put_user(t32.tv_sec, &t64->tv_sec) ||
964 put_user(t32.tv_nsec, &t64->tv_nsec))
965 return -EFAULT;
966
967 return sys_semtimedop(semid, tsems, nsems, t64);
968}
969
970asmlinkage long
971sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
972{
973 int version, err;
974
975 version = call >> 16; /* hack for backward compatibility */
976 call &= 0xffff;
977
978 switch (call) {
979 case SEMOP:
980 /* struct sembuf is the same on 32 and 64bit :)) */
219ac73a 981 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 982 NULL);
983 break;
984 case SEMTIMEDOP:
219ac73a 985 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 986 (const struct compat_timespec __user *)AA(fifth));
987 break;
988 case SEMGET:
989 err = sys_semget (first, second, third);
990 break;
991 case SEMCTL:
992 err = do_sys32_semctl (first, second, third,
219ac73a 993 (void __user *)AA(ptr));
1da177e4
LT		 994 break;
995
996 case MSGSND:
997 err = do_sys32_msgsnd (first, second, third,
219ac73a 998 (void __user *)AA(ptr));
1da177e4
LT		 999 break;
1000 case MSGRCV:
1001 err = do_sys32_msgrcv (first, second, fifth, third,
219ac73a 1002 version, (void __user *)AA(ptr));
1da177e4
LT		 1003 break;
1004 case MSGGET:
1005 err = sys_msgget ((key_t) first, second);
1006 break;
1007 case MSGCTL:
219ac73a 1008 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 1009 break;
1010
1011 case SHMAT:
1012 err = do_sys32_shmat (first, second, third,
219ac73a 1013 version, (void __user *)AA(ptr));
1da177e4
LT		 1014 break;
1015 case SHMDT:
219ac73a 1016 err = sys_shmdt ((char __user *)A(ptr));
1da177e4
LT		 1017 break;
1018 case SHMGET:
1019 err = sys_shmget (first, (unsigned)second, third);
1020 break;
1021 case SHMCTL:
219ac73a 1022 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 1023 break;
1024 default:
1025 err = -EINVAL;
1026 break;
1027 }
1028
1029 return err;
1030}
1031
1032asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
219ac73a 1033 int shmflg, int32_t __user *addr)
1da177e4
LT		 1034{
1035 unsigned long raddr;
1036 int err;
1037
1038 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1039 if (err)
1040 return err;
1041
1042 return put_user(raddr, addr);
1043}
1044
1045struct sysctl_args32
1046{
1047 compat_caddr_t name;
1048 int nlen;
1049 compat_caddr_t oldval;
1050 compat_caddr_t oldlenp;
1051 compat_caddr_t newval;
1052 compat_size_t newlen;
1053 unsigned int __unused[4];
1054};
1055
1056#ifdef CONFIG_SYSCTL
1057
219ac73a 1058asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
1da177e4
LT		 1059{
1060 struct sysctl_args32 tmp;
1061 int error;
219ac73a
AN		 1062 size_t oldlen;
1063 size_t __user *oldlenp = NULL;
1064 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1da177e4
LT		 1065
1066 if (copy_from_user(&tmp, args, sizeof(tmp)))
1067 return -EFAULT;
1068
1069 if (tmp.oldval && tmp.oldlenp) {
1070 /* Duh, this is ugly and might not work if sysctl_args
1071 is in read-only memory, but do_sysctl does indirectly
1072 a lot of uaccess in both directions and we'd have to
1073 basically copy the whole sysctl.c here, and
1074 glibc's __sysctl uses rw memory for the structure
1075 anyway. */
219ac73a
AN		 1076 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1077 put_user(oldlen, (size_t __user *)addr))
1da177e4 1078 return -EFAULT;
219ac73a 1079 oldlenp = (size_t __user *)addr;
1da177e4
LT		 1080 }
1081
1082 lock_kernel();
219ac73a
AN		 1083 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1084 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1da177e4
LT		 1085 unlock_kernel();
1086 if (oldlenp) {
1087 if (!error) {
219ac73a
AN		 1088 if (get_user(oldlen, (size_t __user *)addr) ||
1089 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1da177e4
LT		 1090 error = -EFAULT;
1091 }
1092 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1093 }
1094 return error;
1095}
1096
1097#endif /* CONFIG_SYSCTL */
1098
219ac73a 1099asmlinkage long sys32_newuname(struct new_utsname __user * name)
1da177e4
LT		 1100{
1101 int ret = 0;
1102
1103 down_read(&uts_sem);
1104 if (copy_to_user(name,&system_utsname,sizeof *name))
1105 ret = -EFAULT;
1106 up_read(&uts_sem);
1107
1108 if (current->personality == PER_LINUX32 && !ret)
1109 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1110 ret = -EFAULT;
1111
1112 return ret;
1113}
1114
1115asmlinkage int sys32_personality(unsigned long personality)
1116{
1117 int ret;
1118 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1119 personality = PER_LINUX32;
1120 ret = sys_personality(personality);
1121 if (ret == PER_LINUX32)
1122 ret = PER_LINUX;
1123 return ret;
1124}
1125
1126/* ustat compatibility */
1127struct ustat32 {
1128 compat_daddr_t f_tfree;
1129 compat_ino_t f_tinode;
1130 char f_fname[6];
1131 char f_fpack[6];
1132};
1133
219ac73a 1134extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1da177e4 1135
219ac73a 1136asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1da177e4
LT		 1137{
1138 int err;
1139 struct ustat tmp;
1140 struct ustat32 tmp32;
1141 mm_segment_t old_fs = get_fs();
1142
1143 set_fs(KERNEL_DS);
219ac73a 1144 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1da177e4
LT		 1145 set_fs (old_fs);
1146
1147 if (err)
1148 goto out;
1149
1150 memset(&tmp32,0,sizeof(struct ustat32));
1151 tmp32.f_tfree = tmp.f_tfree;
1152 tmp32.f_tinode = tmp.f_tinode;
1153
1154 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1155
1156out:
1157 return err;
1158}
1159
1160/* Handle adjtimex compatibility. */
1161
1da177e4
LT		 1162extern int do_adjtimex(struct timex *);
1163
88959ea9 1164asmlinkage int sys32_adjtimex(struct compat_timex __user *utp)
1da177e4
LT		 1165{
1166 struct timex txc;
1167 int ret;
1168
1169 memset(&txc, 0, sizeof(struct timex));
1170
1171 if (get_user(txc.modes, &utp->modes) ||
1172 __get_user(txc.offset, &utp->offset) ||
1173 __get_user(txc.freq, &utp->freq) ||
1174 __get_user(txc.maxerror, &utp->maxerror) ||
1175 __get_user(txc.esterror, &utp->esterror) ||
1176 __get_user(txc.status, &utp->status) ||
1177 __get_user(txc.constant, &utp->constant) ||
1178 __get_user(txc.precision, &utp->precision) ||
1179 __get_user(txc.tolerance, &utp->tolerance) ||
1180 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1181 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1182 __get_user(txc.tick, &utp->tick) ||
1183 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1184 __get_user(txc.jitter, &utp->jitter) ||
1185 __get_user(txc.shift, &utp->shift) ||
1186 __get_user(txc.stabil, &utp->stabil) ||
1187 __get_user(txc.jitcnt, &utp->jitcnt) ||
1188 __get_user(txc.calcnt, &utp->calcnt) ||
1189 __get_user(txc.errcnt, &utp->errcnt) ||
1190 __get_user(txc.stbcnt, &utp->stbcnt))
1191 return -EFAULT;
1192
1193 ret = do_adjtimex(&txc);
1194
1195 if (put_user(txc.modes, &utp->modes) ||
1196 __put_user(txc.offset, &utp->offset) ||
1197 __put_user(txc.freq, &utp->freq) ||
1198 __put_user(txc.maxerror, &utp->maxerror) ||
1199 __put_user(txc.esterror, &utp->esterror) ||
1200 __put_user(txc.status, &utp->status) ||
1201 __put_user(txc.constant, &utp->constant) ||
1202 __put_user(txc.precision, &utp->precision) ||
1203 __put_user(txc.tolerance, &utp->tolerance) ||
1204 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1205 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1206 __put_user(txc.tick, &utp->tick) ||
1207 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1208 __put_user(txc.jitter, &utp->jitter) ||
1209 __put_user(txc.shift, &utp->shift) ||
1210 __put_user(txc.stabil, &utp->stabil) ||
1211 __put_user(txc.jitcnt, &utp->jitcnt) ||
1212 __put_user(txc.calcnt, &utp->calcnt) ||
1213 __put_user(txc.errcnt, &utp->errcnt) ||
1214 __put_user(txc.stbcnt, &utp->stbcnt))
1215 ret = -EFAULT;
1216
1217 return ret;
1218}
1219
219ac73a 1220asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1da177e4
LT		 1221 s32 count)
1222{
1223 mm_segment_t old_fs = get_fs();
1224 int ret;
1225 off_t of;
42a3b4f2 1226
1da177e4
LT		 1227 if (offset && get_user(of, offset))
1228 return -EFAULT;
42a3b4f2 1229
1da177e4 1230 set_fs(KERNEL_DS);
219ac73a 1231 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1da177e4 1232 set_fs(old_fs);
42a3b4f2 1233
1da177e4
LT		 1234 if (offset && put_user(of, offset))
1235 return -EFAULT;
42a3b4f2 1236
1da177e4
LT		 1237 return ret;
1238}
1239
1240asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1241 size_t count)
1242{
1243 return sys_readahead(fd, merge_64(a2, a3), count);
1244}
1245
1246/* Argument list sizes for sys_socketcall */
1247#define AL(x) ((x) * sizeof(unsigned int))
1248static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1249 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1250 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1251#undef AL
1252
1253/*
42a3b4f2 1254 * System call vectors.
1da177e4
LT		 1255 *
1256 * Argument checking cleaned up. Saved 20% in size.
1257 * This function doesn't need to set the kernel lock because
42a3b4f2 1258 * it is set by the callees.
1da177e4
LT		 1259 */
1260
219ac73a 1261asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1da177e4
LT		 1262{
1263 unsigned int a[6];
1264 unsigned int a0,a1;
1265 int err;
1266
1267 extern asmlinkage long sys_socket(int family, int type, int protocol);
1268 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1269 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1270 extern asmlinkage long sys_listen(int fd, int backlog);
1271 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1272 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1273 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1274 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1275 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1276 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1277 struct sockaddr __user *addr, int addr_len);
1278 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1279 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1280 struct sockaddr __user *addr, int __user *addr_len);
1281 extern asmlinkage long sys_shutdown(int fd, int how);
1282 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
219ac73a 1283 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1da177e4
LT		 1284 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1285 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1286
1287
1288 if(call<1||call>SYS_RECVMSG)
1289 return -EINVAL;
1290
1291 /* copy_from_user should be SMP safe. */
1292 if (copy_from_user(a, args32, socketcall_nargs[call]))
1293 return -EFAULT;
42a3b4f2 1294
1da177e4
LT		 1295 a0=a[0];
1296 a1=a[1];
42a3b4f2
RB		 1297
1298 switch(call)
1da177e4
LT		 1299 {
1300 case SYS_SOCKET:
1301 err = sys_socket(a0,a1,a[2]);
1302 break;
1303 case SYS_BIND:
1304 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1305 break;
1306 case SYS_CONNECT:
1307 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1308 break;
1309 case SYS_LISTEN:
1310 err = sys_listen(a0,a1);
1311 break;
1312 case SYS_ACCEPT:
1313 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1314 break;
1315 case SYS_GETSOCKNAME:
1316 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1317 break;
1318 case SYS_GETPEERNAME:
1319 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1320 break;
1321 case SYS_SOCKETPAIR:
1322 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1323 break;
1324 case SYS_SEND:
1325 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1326 break;
1327 case SYS_SENDTO:
1328 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1329 (struct sockaddr __user *)A(a[4]), a[5]);
1330 break;
1331 case SYS_RECV:
1332 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1333 break;
1334 case SYS_RECVFROM:
1335 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1336 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1337 break;
1338 case SYS_SHUTDOWN:
1339 err = sys_shutdown(a0,a1);
1340 break;
1341 case SYS_SETSOCKOPT:
1342 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1343 break;
1344 case SYS_GETSOCKOPT:
1345 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1346 break;
1347 case SYS_SENDMSG:
1348 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1349 break;
1350 case SYS_RECVMSG:
1351 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1352 break;
1353 default:
1354 err = -EINVAL;
1355 break;
1356 }
1357 return err;
1358}
d1abb6a2
RB		 1359
1360struct sigevent32 {
1361 u32 sigev_value;
1362 u32 sigev_signo;
1363 u32 sigev_notify;
1364 u32 payload[(64 / 4) - 3];
1365};
1366
1367extern asmlinkage long
1368sys_timer_create(clockid_t which_clock,
1369 struct sigevent __user *timer_event_spec,
1370 timer_t __user * created_timer_id);
1371
1372long
1373sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1374{
1375 struct sigevent __user *p = NULL;
1376 if (se32) {
1377 struct sigevent se;
1378 p = compat_alloc_user_space(sizeof(struct sigevent));
1379 memset(&se, 0, sizeof(struct sigevent));
1380 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1381 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1382 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1383 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1384 sizeof(se32->payload)) ||
1385 copy_to_user(p, &se, sizeof(se)))
1386 return -EFAULT;
1387 }
1388 return sys_timer_create(clock, p, timer_id);
1389}
1390
3c37026d
RB		 1391save_static_function(sys32_clone);
1392__attribute_used__ noinline static int
1393_sys32_clone(nabi_no_regargs struct pt_regs regs)
1394{
1395 unsigned long clone_flags;
1396 unsigned long newsp;
1397 int __user *parent_tidptr, *child_tidptr;
1398
1399 clone_flags = regs.regs[4];
1400 newsp = regs.regs[5];
1401 if (!newsp)
1402 newsp = regs.regs[29];
219ac73a 1403 parent_tidptr = (int __user *) regs.regs[6];
3c37026d
RB		 1404
1405 /* Use __dummy4 instead of getting it off the stack, so that
1406 syscall() works. */
1407 child_tidptr = (int __user *) __dummy4;
1408 return do_fork(clone_flags, newsp, &regs, 0,
1409 parent_tidptr, child_tidptr);
1410}
1411
1412extern asmlinkage void sys_set_thread_area(u32 addr);
1413asmlinkage void sys32_set_thread_area(u32 addr)
1414{
1415 sys_set_thread_area(AA(addr));
1416}
Linux kernel - Deliverables
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