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Merge branch 'master'
[linux-2.6-block.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>
1da177e4
LT		 33#include <linux/dnotify.h>
34#include <linux/module.h>
35#include <linux/binfmts.h>
36#include <linux/security.h>
37#include <linux/compat.h>
38#include <linux/vfs.h>
39
40#include <net/sock.h>
41#include <net/scm.h>
42
43#include <asm/ipc.h>
44#include <asm/sim.h>
45#include <asm/uaccess.h>
46#include <asm/mmu_context.h>
47#include <asm/mman.h>
48
49/* Use this to get at 32-bit user passed pointers. */
50/* A() macro should be used for places where you e.g.
51 have some internal variable u32 and just want to get
52 rid of a compiler warning. AA() has to be used in
53 places where you want to convert a function argument
54 to 32bit pointer or when you e.g. access pt_regs
55 structure and want to consider 32bit registers only.
56 */
57#define A(__x) ((unsigned long)(__x))
58#define AA(__x) ((unsigned long)((int)__x))
59
60#ifdef __MIPSEB__
61#define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
62#endif
63#ifdef __MIPSEL__
64#define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
65#endif
66
67/*
68 * Revalidate the inode. This is required for proper NFS attribute caching.
69 */
70
219ac73a 71int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
1da177e4
LT		 72{
73 struct compat_stat tmp;
74
75 if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
76 return -EOVERFLOW;
77
78 memset(&tmp, 0, sizeof(tmp));
79 tmp.st_dev = new_encode_dev(stat->dev);
80 tmp.st_ino = stat->ino;
81 tmp.st_mode = stat->mode;
82 tmp.st_nlink = stat->nlink;
83 SET_UID(tmp.st_uid, stat->uid);
84 SET_GID(tmp.st_gid, stat->gid);
85 tmp.st_rdev = new_encode_dev(stat->rdev);
86 tmp.st_size = stat->size;
87 tmp.st_atime = stat->atime.tv_sec;
88 tmp.st_mtime = stat->mtime.tv_sec;
89 tmp.st_ctime = stat->ctime.tv_sec;
90#ifdef STAT_HAVE_NSEC
91 tmp.st_atime_nsec = stat->atime.tv_nsec;
92 tmp.st_mtime_nsec = stat->mtime.tv_nsec;
93 tmp.st_ctime_nsec = stat->ctime.tv_nsec;
94#endif
95 tmp.st_blocks = stat->blocks;
96 tmp.st_blksize = stat->blksize;
97 return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
98}
99
100asmlinkage unsigned long
101sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
102 unsigned long flags, unsigned long fd, unsigned long pgoff)
103{
104 struct file * file = NULL;
105 unsigned long error;
106
107 error = -EINVAL;
947df17c
PA		 108 if (pgoff & (~PAGE_MASK >> 12))
109 goto out;
110 pgoff >>= PAGE_SHIFT-12;
111
1da177e4
LT		 112 if (!(flags & MAP_ANONYMOUS)) {
113 error = -EBADF;
114 file = fget(fd);
115 if (!file)
116 goto out;
117 }
118 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
119
120 down_write(&current->mm->mmap_sem);
121 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
122 up_write(&current->mm->mmap_sem);
123 if (file)
124 fput(file);
125
126out:
127 return error;
128}
129
130
219ac73a 131asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
1da177e4
LT		 132 unsigned int low)
133{
134 if ((int)high < 0)
135 return -EINVAL;
136 return sys_truncate(path, ((long) high << 32) | low);
137}
138
139asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
140 unsigned int low)
141{
142 if ((int)high < 0)
143 return -EINVAL;
144 return sys_ftruncate(fd, ((long) high << 32) | low);
145}
146
147/*
148 * sys_execve() executes a new program.
149 */
150asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
151{
152 int error;
153 char * filename;
154
155 filename = getname(compat_ptr(regs.regs[4]));
156 error = PTR_ERR(filename);
157 if (IS_ERR(filename))
158 goto out;
159 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
160 compat_ptr(regs.regs[6]), &regs);
161 putname(filename);
162
163out:
164 return error;
165}
166
54f2da75
RB		 167asmlinkage long
168sysn32_waitid(int which, compat_pid_t pid,
169 siginfo_t __user *uinfo, int options,
170 struct compat_rusage __user *uru)
171{
172 struct rusage ru;
173 long ret;
174 mm_segment_t old_fs = get_fs();
219ac73a 175 int si_signo;
54f2da75 176
f3468e0c
RB		 177 if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
178 return -EFAULT;
179
54f2da75
RB		 180 set_fs (KERNEL_DS);
181 ret = sys_waitid(which, pid, uinfo, options,
182 uru ? (struct rusage __user *) &ru : NULL);
183 set_fs (old_fs);
184
219ac73a
AN		 185 if (__get_user(si_signo, &uinfo->si_signo))
186 return -EFAULT;
187 if (ret < 0 || si_signo == 0)
54f2da75
RB		 188 return ret;
189
190 if (uru)
191 ret = put_compat_rusage(&ru, uru);
192 return ret;
193}
194
1da177e4
LT		 195struct sysinfo32 {
196 s32 uptime;
197 u32 loads[3];
198 u32 totalram;
199 u32 freeram;
200 u32 sharedram;
201 u32 bufferram;
202 u32 totalswap;
203 u32 freeswap;
204 u16 procs;
205 u32 totalhigh;
206 u32 freehigh;
207 u32 mem_unit;
208 char _f[8];
209};
210
219ac73a 211asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
1da177e4
LT		 212{
213 struct sysinfo s;
214 int ret, err;
215 mm_segment_t old_fs = get_fs ();
42a3b4f2 216
1da177e4 217 set_fs (KERNEL_DS);
219ac73a 218 ret = sys_sysinfo((struct sysinfo __user *)&s);
1da177e4
LT		 219 set_fs (old_fs);
220 err = put_user (s.uptime, &info->uptime);
221 err |= __put_user (s.loads[0], &info->loads[0]);
222 err |= __put_user (s.loads[1], &info->loads[1]);
223 err |= __put_user (s.loads[2], &info->loads[2]);
224 err |= __put_user (s.totalram, &info->totalram);
225 err |= __put_user (s.freeram, &info->freeram);
226 err |= __put_user (s.sharedram, &info->sharedram);
227 err |= __put_user (s.bufferram, &info->bufferram);
228 err |= __put_user (s.totalswap, &info->totalswap);
229 err |= __put_user (s.freeswap, &info->freeswap);
230 err |= __put_user (s.procs, &info->procs);
231 err |= __put_user (s.totalhigh, &info->totalhigh);
232 err |= __put_user (s.freehigh, &info->freehigh);
233 err |= __put_user (s.mem_unit, &info->mem_unit);
234 if (err)
235 return -EFAULT;
236 return ret;
237}
238
239#define RLIM_INFINITY32 0x7fffffff
240#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
241
242struct rlimit32 {
243 int rlim_cur;
244 int rlim_max;
245};
246
247#ifdef __MIPSEB__
219ac73a 248asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
1da177e4
LT		 249 int length_hi, int length_lo)
250#endif
251#ifdef __MIPSEL__
219ac73a 252asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
1da177e4
LT		 253 int length_lo, int length_hi)
254#endif
255{
256 loff_t length;
257
258 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
259
260 return sys_truncate(path, length);
261}
262
263#ifdef __MIPSEB__
264asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
265 int length_hi, int length_lo)
266#endif
267#ifdef __MIPSEL__
268asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
269 int length_lo, int length_hi)
270#endif
271{
272 loff_t length;
273
274 length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
275
276 return sys_ftruncate(fd, length);
277}
278
279static inline long
219ac73a 280get_tv32(struct timeval *o, struct compat_timeval __user *i)
1da177e4
LT		 281{
282 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
283 (__get_user(o->tv_sec, &i->tv_sec) |
284 __get_user(o->tv_usec, &i->tv_usec)));
285}
286
287static inline long
219ac73a 288put_tv32(struct compat_timeval __user *o, struct timeval *i)
1da177e4
LT		 289{
290 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
291 (__put_user(i->tv_sec, &o->tv_sec) |
292 __put_user(i->tv_usec, &o->tv_usec)));
293}
294
295extern struct timezone sys_tz;
296
297asmlinkage int
219ac73a 298sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
1da177e4
LT		 299{
300 if (tv) {
301 struct timeval ktv;
302 do_gettimeofday(&ktv);
303 if (put_tv32(tv, &ktv))
304 return -EFAULT;
305 }
306 if (tz) {
307 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
308 return -EFAULT;
309 }
310 return 0;
311}
312
219ac73a 313static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
1da177e4
LT		 314{
315 long usec;
316
317 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
318 return -EFAULT;
319 if (__get_user(o->tv_sec, &i->tv_sec))
320 return -EFAULT;
321 if (__get_user(usec, &i->tv_usec))
322 return -EFAULT;
323 o->tv_nsec = usec * 1000;
324 return 0;
325}
326
327asmlinkage int
219ac73a 328sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
1da177e4
LT		 329{
330 struct timespec kts;
331 struct timezone ktz;
332
333 if (tv) {
334 if (get_ts32(&kts, tv))
335 return -EFAULT;
336 }
337 if (tz) {
338 if (copy_from_user(&ktz, tz, sizeof(ktz)))
339 return -EFAULT;
340 }
341
342 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
343}
344
345asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
219ac73a 346 unsigned int offset_low, loff_t __user * result,
1da177e4
LT		 347 unsigned int origin)
348{
349 return sys_llseek(fd, offset_high, offset_low, result, origin);
350}
351
352/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
353 lseek back to original location. They fail just like lseek does on
354 non-seekable files. */
355
219ac73a 356asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
1da177e4
LT		 357 size_t count, u32 unused, u64 a4, u64 a5)
358{
359 ssize_t ret;
360 struct file * file;
219ac73a 361 ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
1da177e4
LT		 362 loff_t pos;
363
364 ret = -EBADF;
365 file = fget(fd);
366 if (!file)
367 goto bad_file;
368 if (!(file->f_mode & FMODE_READ))
369 goto out;
370 pos = merge_64(a4, a5);
371 ret = rw_verify_area(READ, file, &pos, count);
e28cc715 372 if (ret < 0)
1da177e4
LT		 373 goto out;
374 ret = -EINVAL;
375 if (!file->f_op || !(read = file->f_op->read))
376 goto out;
377 if (pos < 0)
378 goto out;
379 ret = -ESPIPE;
380 if (!(file->f_mode & FMODE_PREAD))
381 goto out;
382 ret = read(file, buf, count, &pos);
383 if (ret > 0)
384 dnotify_parent(file->f_dentry, DN_ACCESS);
385out:
386 fput(file);
387bad_file:
388 return ret;
389}
390
219ac73a 391asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
1da177e4
LT		 392 size_t count, u32 unused, u64 a4, u64 a5)
393{
394 ssize_t ret;
395 struct file * file;
219ac73a 396 ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
1da177e4
LT		 397 loff_t pos;
398
399 ret = -EBADF;
400 file = fget(fd);
401 if (!file)
402 goto bad_file;
403 if (!(file->f_mode & FMODE_WRITE))
404 goto out;
405 pos = merge_64(a4, a5);
406 ret = rw_verify_area(WRITE, file, &pos, count);
e28cc715 407 if (ret < 0)
1da177e4
LT		 408 goto out;
409 ret = -EINVAL;
410 if (!file->f_op || !(write = file->f_op->write))
411 goto out;
412 if (pos < 0)
413 goto out;
414
415 ret = -ESPIPE;
416 if (!(file->f_mode & FMODE_PWRITE))
417 goto out;
418
419 ret = write(file, buf, count, &pos);
420 if (ret > 0)
421 dnotify_parent(file->f_dentry, DN_MODIFY);
422out:
423 fput(file);
424bad_file:
425 return ret;
426}
427
428asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
219ac73a 429 struct compat_timespec __user *interval)
1da177e4
LT		 430{
431 struct timespec t;
432 int ret;
433 mm_segment_t old_fs = get_fs ();
434
435 set_fs (KERNEL_DS);
219ac73a 436 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
1da177e4
LT		 437 set_fs (old_fs);
438 if (put_user (t.tv_sec, &interval->tv_sec) ||
439 __put_user (t.tv_nsec, &interval->tv_nsec))
440 return -EFAULT;
441 return ret;
442}
443
444struct msgbuf32 { s32 mtype; char mtext[1]; };
445
446struct ipc_perm32
447{
448 key_t key;
202e5979
SR		 449 __compat_uid_t uid;
450 __compat_gid_t gid;
451 __compat_uid_t cuid;
452 __compat_gid_t cgid;
1da177e4
LT		 453 compat_mode_t mode;
454 unsigned short seq;
455};
456
457struct ipc64_perm32 {
458 key_t key;
202e5979
SR		 459 __compat_uid_t uid;
460 __compat_gid_t gid;
461 __compat_uid_t cuid;
462 __compat_gid_t cgid;
42a3b4f2 463 compat_mode_t mode;
1da177e4
LT		 464 unsigned short seq;
465 unsigned short __pad1;
466 unsigned int __unused1;
467 unsigned int __unused2;
468};
469
470struct semid_ds32 {
471 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
472 compat_time_t sem_otime; /* last semop time */
473 compat_time_t sem_ctime; /* last change time */
474 u32 sem_base; /* ptr to first semaphore in array */
475 u32 sem_pending; /* pending operations to be processed */
476 u32 sem_pending_last; /* last pending operation */
477 u32 undo; /* undo requests on this array */
478 unsigned short sem_nsems; /* no. of semaphores in array */
479};
480
481struct semid64_ds32 {
482 struct ipc64_perm32 sem_perm;
483 compat_time_t sem_otime;
484 compat_time_t sem_ctime;
485 unsigned int sem_nsems;
486 unsigned int __unused1;
487 unsigned int __unused2;
488};
489
490struct msqid_ds32
491{
492 struct ipc_perm32 msg_perm;
493 u32 msg_first;
494 u32 msg_last;
495 compat_time_t msg_stime;
496 compat_time_t msg_rtime;
497 compat_time_t msg_ctime;
498 u32 wwait;
499 u32 rwait;
500 unsigned short msg_cbytes;
501 unsigned short msg_qnum;
502 unsigned short msg_qbytes;
503 compat_ipc_pid_t msg_lspid;
504 compat_ipc_pid_t msg_lrpid;
505};
506
507struct msqid64_ds32 {
508 struct ipc64_perm32 msg_perm;
509 compat_time_t msg_stime;
510 unsigned int __unused1;
511 compat_time_t msg_rtime;
512 unsigned int __unused2;
513 compat_time_t msg_ctime;
514 unsigned int __unused3;
515 unsigned int msg_cbytes;
516 unsigned int msg_qnum;
517 unsigned int msg_qbytes;
518 compat_pid_t msg_lspid;
519 compat_pid_t msg_lrpid;
520 unsigned int __unused4;
521 unsigned int __unused5;
522};
523
524struct shmid_ds32 {
525 struct ipc_perm32 shm_perm;
526 int shm_segsz;
527 compat_time_t shm_atime;
528 compat_time_t shm_dtime;
529 compat_time_t shm_ctime;
530 compat_ipc_pid_t shm_cpid;
531 compat_ipc_pid_t shm_lpid;
532 unsigned short shm_nattch;
533};
534
535struct shmid64_ds32 {
536 struct ipc64_perm32 shm_perm;
537 compat_size_t shm_segsz;
538 compat_time_t shm_atime;
539 compat_time_t shm_dtime;
540 compat_time_t shm_ctime;
541 compat_pid_t shm_cpid;
542 compat_pid_t shm_lpid;
543 unsigned int shm_nattch;
544 unsigned int __unused1;
545 unsigned int __unused2;
546};
547
548struct ipc_kludge32 {
549 u32 msgp;
550 s32 msgtyp;
551};
552
553static int
219ac73a 554do_sys32_semctl(int first, int second, int third, void __user *uptr)
1da177e4
LT		 555{
556 union semun fourth;
557 u32 pad;
558 int err, err2;
559 struct semid64_ds s;
560 mm_segment_t old_fs;
561
562 if (!uptr)
563 return -EINVAL;
564 err = -EFAULT;
219ac73a 565 if (get_user (pad, (u32 __user *)uptr))
1da177e4
LT		 566 return err;
567 if ((third & ~IPC_64) == SETVAL)
568 fourth.val = (int)pad;
569 else
219ac73a 570 fourth.__pad = (void __user *)A(pad);
1da177e4
LT		 571 switch (third & ~IPC_64) {
572 case IPC_INFO:
573 case IPC_RMID:
574 case IPC_SET:
575 case SEM_INFO:
576 case GETVAL:
577 case GETPID:
578 case GETNCNT:
579 case GETZCNT:
580 case GETALL:
581 case SETVAL:
582 case SETALL:
583 err = sys_semctl (first, second, third, fourth);
584 break;
585
586 case IPC_STAT:
587 case SEM_STAT:
219ac73a 588 fourth.__pad = (struct semid64_ds __user *)&s;
1da177e4
LT		 589 old_fs = get_fs();
590 set_fs(KERNEL_DS);
591 err = sys_semctl(first, second, third | IPC_64, fourth);
592 set_fs(old_fs);
593
594 if (third & IPC_64) {
219ac73a 595 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
1da177e4
LT		 596
597 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
598 err = -EFAULT;
599 break;
600 }
601 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
602 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
603 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
604 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
605 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
606 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
607 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
608 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
609 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
610 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
611 } else {
219ac73a 612 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
1da177e4
LT		 613
614 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
615 err = -EFAULT;
616 break;
617 }
618 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
619 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
620 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
621 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
622 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
623 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
624 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
625 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
626 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
627 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
628 }
629 if (err2)
630 err = -EFAULT;
631 break;
632
633 default:
634 err = - EINVAL;
635 break;
636 }
637
638 return err;
639}
640
641static int
219ac73a 642do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
1da177e4 643{
219ac73a 644 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 645 struct msgbuf *p;
646 mm_segment_t old_fs;
647 int err;
648
649 if (second < 0)
650 return -EINVAL;
651 p = kmalloc (second + sizeof (struct msgbuf)
652 + 4, GFP_USER);
653 if (!p)
654 return -ENOMEM;
655 err = get_user (p->mtype, &up->mtype);
656 if (err)
657 goto out;
658 err |= __copy_from_user (p->mtext, &up->mtext, second);
659 if (err)
660 goto out;
661 old_fs = get_fs ();
662 set_fs (KERNEL_DS);
219ac73a 663 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
1da177e4
LT		 664 set_fs (old_fs);
665out:
666 kfree (p);
667
668 return err;
669}
670
671static int
672do_sys32_msgrcv (int first, int second, int msgtyp, int third,
219ac73a 673 int version, void __user *uptr)
1da177e4 674{
219ac73a 675 struct msgbuf32 __user *up;
1da177e4
LT		 676 struct msgbuf *p;
677 mm_segment_t old_fs;
678 int err;
679
680 if (!version) {
219ac73a 681 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
1da177e4
LT		 682 struct ipc_kludge32 ipck;
683
684 err = -EINVAL;
685 if (!uptr)
686 goto out;
687 err = -EFAULT;
688 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
689 goto out;
219ac73a 690 uptr = (void __user *)AA(ipck.msgp);
1da177e4
LT		 691 msgtyp = ipck.msgtyp;
692 }
693
694 if (second < 0)
695 return -EINVAL;
696 err = -ENOMEM;
697 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
698 if (!p)
699 goto out;
700 old_fs = get_fs ();
701 set_fs (KERNEL_DS);
219ac73a 702 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
1da177e4
LT		 703 set_fs (old_fs);
704 if (err < 0)
705 goto free_then_out;
219ac73a 706 up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 707 if (put_user (p->mtype, &up->mtype) ||
708 __copy_to_user (&up->mtext, p->mtext, err))
709 err = -EFAULT;
710free_then_out:
711 kfree (p);
712out:
713 return err;
714}
715
716static int
219ac73a 717do_sys32_msgctl (int first, int second, void __user *uptr)
1da177e4
LT		 718{
719 int err = -EINVAL, err2;
720 struct msqid64_ds m;
219ac73a
AN		 721 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
722 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
1da177e4
LT		 723 mm_segment_t old_fs;
724
725 switch (second & ~IPC_64) {
726 case IPC_INFO:
727 case IPC_RMID:
728 case MSG_INFO:
219ac73a 729 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
1da177e4
LT		 730 break;
731
732 case IPC_SET:
733 if (second & IPC_64) {
734 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
735 err = -EFAULT;
736 break;
737 }
738 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
739 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
740 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
741 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
742 } else {
743 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
744 err = -EFAULT;
745 break;
746 }
747 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
748 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
749 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
750 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
751 }
752 if (err)
753 break;
754 old_fs = get_fs();
755 set_fs(KERNEL_DS);
219ac73a 756 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 757 set_fs(old_fs);
758 break;
759
760 case IPC_STAT:
761 case MSG_STAT:
762 old_fs = get_fs();
763 set_fs(KERNEL_DS);
219ac73a 764 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 765 set_fs(old_fs);
766 if (second & IPC_64) {
767 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
768 err = -EFAULT;
769 break;
770 }
771 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
772 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
773 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
774 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
775 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
776 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
777 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
778 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
779 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
780 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
781 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
782 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
783 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
784 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
785 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
786 if (err2)
787 err = -EFAULT;
788 } else {
789 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
790 err = -EFAULT;
791 break;
792 }
793 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
794 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
795 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
796 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
797 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
798 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
799 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
800 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
801 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
802 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
803 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
804 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
805 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
806 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
807 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
808 if (err2)
809 err = -EFAULT;
810 }
811 break;
812 }
813
814 return err;
815}
816
817static int
219ac73a 818do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
1da177e4
LT		 819{
820 unsigned long raddr;
219ac73a 821 u32 __user *uaddr = (u32 __user *)A((u32)third);
1da177e4
LT		 822 int err = -EINVAL;
823
824 if (version == 1)
825 return err;
826 err = do_shmat (first, uptr, second, &raddr);
827 if (err)
828 return err;
829 err = put_user (raddr, uaddr);
830 return err;
831}
832
833struct shm_info32 {
834 int used_ids;
835 u32 shm_tot, shm_rss, shm_swp;
836 u32 swap_attempts, swap_successes;
837};
838
839static int
219ac73a 840do_sys32_shmctl (int first, int second, void __user *uptr)
1da177e4 841{
219ac73a
AN		 842 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
843 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
844 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
1da177e4
LT		 845 int err = -EFAULT, err2;
846 struct shmid64_ds s64;
847 mm_segment_t old_fs;
848 struct shm_info si;
849 struct shmid_ds s;
850
851 switch (second & ~IPC_64) {
852 case IPC_INFO:
853 second = IPC_INFO; /* So that we don't have to translate it */
854 case IPC_RMID:
855 case SHM_LOCK:
856 case SHM_UNLOCK:
219ac73a 857 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
1da177e4
LT		 858 break;
859 case IPC_SET:
860 if (second & IPC_64) {
861 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
862 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
863 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
864 } else {
865 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
866 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
867 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
868 }
869 if (err)
870 break;
871 old_fs = get_fs();
872 set_fs(KERNEL_DS);
219ac73a 873 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
1da177e4
LT		 874 set_fs(old_fs);
875 break;
876
877 case IPC_STAT:
878 case SHM_STAT:
879 old_fs = get_fs();
880 set_fs(KERNEL_DS);
219ac73a 881 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
1da177e4
LT		 882 set_fs(old_fs);
883 if (err < 0)
884 break;
885 if (second & IPC_64) {
886 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
887 err = -EFAULT;
888 break;
889 }
890 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
891 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
892 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
893 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
894 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
895 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
896 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
897 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
898 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
899 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
900 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
901 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
902 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
903 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
904 } else {
905 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
906 err = -EFAULT;
907 break;
908 }
909 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
910 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
911 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
912 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
913 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
914 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
915 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
916 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
917 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
918 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
919 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
920 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
921 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
922 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
923 }
924 if (err2)
925 err = -EFAULT;
926 break;
927
928 case SHM_INFO:
929 old_fs = get_fs();
930 set_fs(KERNEL_DS);
219ac73a 931 err = sys_shmctl(first, second, (void __user *)&si);
1da177e4
LT		 932 set_fs(old_fs);
933 if (err < 0)
934 break;
935 err2 = put_user(si.used_ids, &uip->used_ids);
936 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
937 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
938 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
939 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
940 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
941 if (err2)
942 err = -EFAULT;
943 break;
944
945 default:
946 err = -EINVAL;
947 break;
948 }
949
950 return err;
951}
952
219ac73a
AN		 953static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
954 const struct compat_timespec __user *timeout32)
1da177e4
LT		 955{
956 struct compat_timespec t32;
219ac73a 957 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
1da177e4
LT		 958
959 if (copy_from_user(&t32, timeout32, sizeof(t32)))
960 return -EFAULT;
961
962 if (put_user(t32.tv_sec, &t64->tv_sec) ||
963 put_user(t32.tv_nsec, &t64->tv_nsec))
964 return -EFAULT;
965
966 return sys_semtimedop(semid, tsems, nsems, t64);
967}
968
969asmlinkage long
970sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
971{
972 int version, err;
973
974 version = call >> 16; /* hack for backward compatibility */
975 call &= 0xffff;
976
977 switch (call) {
978 case SEMOP:
979 /* struct sembuf is the same on 32 and 64bit :)) */
219ac73a 980 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 981 NULL);
982 break;
983 case SEMTIMEDOP:
219ac73a 984 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 985 (const struct compat_timespec __user *)AA(fifth));
986 break;
987 case SEMGET:
988 err = sys_semget (first, second, third);
989 break;
990 case SEMCTL:
991 err = do_sys32_semctl (first, second, third,
219ac73a 992 (void __user *)AA(ptr));
1da177e4
LT		 993 break;
994
995 case MSGSND:
996 err = do_sys32_msgsnd (first, second, third,
219ac73a 997 (void __user *)AA(ptr));
1da177e4
LT		 998 break;
999 case MSGRCV:
1000 err = do_sys32_msgrcv (first, second, fifth, third,
219ac73a 1001 version, (void __user *)AA(ptr));
1da177e4
LT		 1002 break;
1003 case MSGGET:
1004 err = sys_msgget ((key_t) first, second);
1005 break;
1006 case MSGCTL:
219ac73a 1007 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 1008 break;
1009
1010 case SHMAT:
1011 err = do_sys32_shmat (first, second, third,
219ac73a 1012 version, (void __user *)AA(ptr));
1da177e4
LT		 1013 break;
1014 case SHMDT:
219ac73a 1015 err = sys_shmdt ((char __user *)A(ptr));
1da177e4
LT		 1016 break;
1017 case SHMGET:
1018 err = sys_shmget (first, (unsigned)second, third);
1019 break;
1020 case SHMCTL:
219ac73a 1021 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 1022 break;
1023 default:
1024 err = -EINVAL;
1025 break;
1026 }
1027
1028 return err;
1029}
1030
1031asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
219ac73a 1032 int shmflg, int32_t __user *addr)
1da177e4
LT		 1033{
1034 unsigned long raddr;
1035 int err;
1036
1037 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
1038 if (err)
1039 return err;
1040
1041 return put_user(raddr, addr);
1042}
1043
1044struct sysctl_args32
1045{
1046 compat_caddr_t name;
1047 int nlen;
1048 compat_caddr_t oldval;
1049 compat_caddr_t oldlenp;
1050 compat_caddr_t newval;
1051 compat_size_t newlen;
1052 unsigned int __unused[4];
1053};
1054
1055#ifdef CONFIG_SYSCTL
1056
219ac73a 1057asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
1da177e4
LT		 1058{
1059 struct sysctl_args32 tmp;
1060 int error;
219ac73a
AN		 1061 size_t oldlen;
1062 size_t __user *oldlenp = NULL;
1063 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1da177e4
LT		 1064
1065 if (copy_from_user(&tmp, args, sizeof(tmp)))
1066 return -EFAULT;
1067
1068 if (tmp.oldval && tmp.oldlenp) {
1069 /* Duh, this is ugly and might not work if sysctl_args
1070 is in read-only memory, but do_sysctl does indirectly
1071 a lot of uaccess in both directions and we'd have to
1072 basically copy the whole sysctl.c here, and
1073 glibc's __sysctl uses rw memory for the structure
1074 anyway. */
219ac73a
AN		 1075 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1076 put_user(oldlen, (size_t __user *)addr))
1da177e4 1077 return -EFAULT;
219ac73a 1078 oldlenp = (size_t __user *)addr;
1da177e4
LT		 1079 }
1080
1081 lock_kernel();
219ac73a
AN		 1082 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1083 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1da177e4
LT		 1084 unlock_kernel();
1085 if (oldlenp) {
1086 if (!error) {
219ac73a
AN		 1087 if (get_user(oldlen, (size_t __user *)addr) ||
1088 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1da177e4
LT		 1089 error = -EFAULT;
1090 }
1091 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1092 }
1093 return error;
1094}
1095
1096#endif /* CONFIG_SYSCTL */
1097
219ac73a 1098asmlinkage long sys32_newuname(struct new_utsname __user * name)
1da177e4
LT		 1099{
1100 int ret = 0;
1101
1102 down_read(&uts_sem);
1103 if (copy_to_user(name,&system_utsname,sizeof *name))
1104 ret = -EFAULT;
1105 up_read(&uts_sem);
1106
1107 if (current->personality == PER_LINUX32 && !ret)
1108 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1109 ret = -EFAULT;
1110
1111 return ret;
1112}
1113
1114asmlinkage int sys32_personality(unsigned long personality)
1115{
1116 int ret;
1117 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1118 personality = PER_LINUX32;
1119 ret = sys_personality(personality);
1120 if (ret == PER_LINUX32)
1121 ret = PER_LINUX;
1122 return ret;
1123}
1124
1125/* ustat compatibility */
1126struct ustat32 {
1127 compat_daddr_t f_tfree;
1128 compat_ino_t f_tinode;
1129 char f_fname[6];
1130 char f_fpack[6];
1131};
1132
219ac73a 1133extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1da177e4 1134
219ac73a 1135asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1da177e4
LT		 1136{
1137 int err;
1138 struct ustat tmp;
1139 struct ustat32 tmp32;
1140 mm_segment_t old_fs = get_fs();
1141
1142 set_fs(KERNEL_DS);
219ac73a 1143 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1da177e4
LT		 1144 set_fs (old_fs);
1145
1146 if (err)
1147 goto out;
1148
1149 memset(&tmp32,0,sizeof(struct ustat32));
1150 tmp32.f_tfree = tmp.f_tfree;
1151 tmp32.f_tinode = tmp.f_tinode;
1152
1153 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1154
1155out:
1156 return err;
1157}
1158
219ac73a 1159asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1da177e4
LT		 1160 s32 count)
1161{
1162 mm_segment_t old_fs = get_fs();
1163 int ret;
1164 off_t of;
42a3b4f2 1165
1da177e4
LT		 1166 if (offset && get_user(of, offset))
1167 return -EFAULT;
42a3b4f2 1168
1da177e4 1169 set_fs(KERNEL_DS);
219ac73a 1170 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1da177e4 1171 set_fs(old_fs);
42a3b4f2 1172
1da177e4
LT		 1173 if (offset && put_user(of, offset))
1174 return -EFAULT;
42a3b4f2 1175
1da177e4
LT		 1176 return ret;
1177}
1178
1179asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1180 size_t count)
1181{
1182 return sys_readahead(fd, merge_64(a2, a3), count);
1183}
1184
a8d587a7
RB		 1185asmlinkage long sys32_sync_file_range(int fd, int __pad,
1186 unsigned long a2, unsigned long a3,
1187 unsigned long a4, unsigned long a5,
1188 int flags)
1189{
1190 return sys_sync_file_range(fd,
1191 merge_64(a2, a3), merge_64(a4, a5),
1192 flags);
1193}
1194
1da177e4
LT		 1195/* Argument list sizes for sys_socketcall */
1196#define AL(x) ((x) * sizeof(unsigned int))
1197static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1198 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1199 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1200#undef AL
1201
1202/*
42a3b4f2 1203 * System call vectors.
1da177e4
LT		 1204 *
1205 * Argument checking cleaned up. Saved 20% in size.
1206 * This function doesn't need to set the kernel lock because
42a3b4f2 1207 * it is set by the callees.
1da177e4
LT		 1208 */
1209
219ac73a 1210asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1da177e4
LT		 1211{
1212 unsigned int a[6];
1213 unsigned int a0,a1;
1214 int err;
1215
1216 extern asmlinkage long sys_socket(int family, int type, int protocol);
1217 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1218 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1219 extern asmlinkage long sys_listen(int fd, int backlog);
1220 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1221 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1222 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1223 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1224 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1225 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1226 struct sockaddr __user *addr, int addr_len);
1227 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1228 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1229 struct sockaddr __user *addr, int __user *addr_len);
1230 extern asmlinkage long sys_shutdown(int fd, int how);
1231 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
219ac73a 1232 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1da177e4
LT		 1233 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1234 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1235
1236
1237 if(call<1||call>SYS_RECVMSG)
1238 return -EINVAL;
1239
1240 /* copy_from_user should be SMP safe. */
1241 if (copy_from_user(a, args32, socketcall_nargs[call]))
1242 return -EFAULT;
42a3b4f2 1243
1da177e4
LT		 1244 a0=a[0];
1245 a1=a[1];
42a3b4f2
RB		 1246
1247 switch(call)
1da177e4
LT		 1248 {
1249 case SYS_SOCKET:
1250 err = sys_socket(a0,a1,a[2]);
1251 break;
1252 case SYS_BIND:
1253 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1254 break;
1255 case SYS_CONNECT:
1256 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1257 break;
1258 case SYS_LISTEN:
1259 err = sys_listen(a0,a1);
1260 break;
1261 case SYS_ACCEPT:
1262 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1263 break;
1264 case SYS_GETSOCKNAME:
1265 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1266 break;
1267 case SYS_GETPEERNAME:
1268 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1269 break;
1270 case SYS_SOCKETPAIR:
1271 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1272 break;
1273 case SYS_SEND:
1274 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1275 break;
1276 case SYS_SENDTO:
1277 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1278 (struct sockaddr __user *)A(a[4]), a[5]);
1279 break;
1280 case SYS_RECV:
1281 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1282 break;
1283 case SYS_RECVFROM:
1284 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1285 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1286 break;
1287 case SYS_SHUTDOWN:
1288 err = sys_shutdown(a0,a1);
1289 break;
1290 case SYS_SETSOCKOPT:
1291 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1292 break;
1293 case SYS_GETSOCKOPT:
1294 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1295 break;
1296 case SYS_SENDMSG:
1297 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1298 break;
1299 case SYS_RECVMSG:
1300 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1301 break;
1302 default:
1303 err = -EINVAL;
1304 break;
1305 }
1306 return err;
1307}
d1abb6a2
RB		 1308
1309struct sigevent32 {
1310 u32 sigev_value;
1311 u32 sigev_signo;
1312 u32 sigev_notify;
1313 u32 payload[(64 / 4) - 3];
1314};
1315
1316extern asmlinkage long
1317sys_timer_create(clockid_t which_clock,
1318 struct sigevent __user *timer_event_spec,
1319 timer_t __user * created_timer_id);
1320
1321long
1322sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1323{
1324 struct sigevent __user *p = NULL;
1325 if (se32) {
1326 struct sigevent se;
1327 p = compat_alloc_user_space(sizeof(struct sigevent));
1328 memset(&se, 0, sizeof(struct sigevent));
1329 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1330 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1331 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1332 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1333 sizeof(se32->payload)) ||
1334 copy_to_user(p, &se, sizeof(se)))
1335 return -EFAULT;
1336 }
1337 return sys_timer_create(clock, p, timer_id);
1338}
1339
3c37026d
RB		 1340save_static_function(sys32_clone);
1341__attribute_used__ noinline static int
1342_sys32_clone(nabi_no_regargs struct pt_regs regs)
1343{
1344 unsigned long clone_flags;
1345 unsigned long newsp;
1346 int __user *parent_tidptr, *child_tidptr;
1347
1348 clone_flags = regs.regs[4];
1349 newsp = regs.regs[5];
1350 if (!newsp)
1351 newsp = regs.regs[29];
219ac73a 1352 parent_tidptr = (int __user *) regs.regs[6];
3c37026d
RB		 1353
1354 /* Use __dummy4 instead of getting it off the stack, so that
1355 syscall() works. */
1356 child_tidptr = (int __user *) __dummy4;
1357 return do_fork(clone_flags, newsp, &regs, 0,
1358 parent_tidptr, child_tidptr);
1359}
1360
1361extern asmlinkage void sys_set_thread_area(u32 addr);
1362asmlinkage void sys32_set_thread_area(u32 addr)
1363{
1364 sys_set_thread_area(AA(addr));
1365}
Linux 6.x block layer and io_uring tree(s)