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[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
[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>
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{
6ad0013b 359 return sys_pread64(fd, buf, count, merge_64(a4, a5));
1da177e4
LT		 360}
361
219ac73a 362asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
1da177e4
LT		 363 size_t count, u32 unused, u64 a4, u64 a5)
364{
6ad0013b 365 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
1da177e4
LT		 366}
367
368asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
219ac73a 369 struct compat_timespec __user *interval)
1da177e4
LT		 370{
371 struct timespec t;
372 int ret;
373 mm_segment_t old_fs = get_fs ();
374
375 set_fs (KERNEL_DS);
219ac73a 376 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
1da177e4
LT		 377 set_fs (old_fs);
378 if (put_user (t.tv_sec, &interval->tv_sec) ||
379 __put_user (t.tv_nsec, &interval->tv_nsec))
380 return -EFAULT;
381 return ret;
382}
383
384struct msgbuf32 { s32 mtype; char mtext[1]; };
385
386struct ipc_perm32
387{
388 key_t key;
202e5979
SR		 389 __compat_uid_t uid;
390 __compat_gid_t gid;
391 __compat_uid_t cuid;
392 __compat_gid_t cgid;
1da177e4
LT		 393 compat_mode_t mode;
394 unsigned short seq;
395};
396
397struct ipc64_perm32 {
398 key_t key;
202e5979
SR		 399 __compat_uid_t uid;
400 __compat_gid_t gid;
401 __compat_uid_t cuid;
402 __compat_gid_t cgid;
42a3b4f2 403 compat_mode_t mode;
1da177e4
LT		 404 unsigned short seq;
405 unsigned short __pad1;
406 unsigned int __unused1;
407 unsigned int __unused2;
408};
409
410struct semid_ds32 {
411 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
412 compat_time_t sem_otime; /* last semop time */
413 compat_time_t sem_ctime; /* last change time */
414 u32 sem_base; /* ptr to first semaphore in array */
415 u32 sem_pending; /* pending operations to be processed */
416 u32 sem_pending_last; /* last pending operation */
417 u32 undo; /* undo requests on this array */
418 unsigned short sem_nsems; /* no. of semaphores in array */
419};
420
421struct semid64_ds32 {
422 struct ipc64_perm32 sem_perm;
423 compat_time_t sem_otime;
424 compat_time_t sem_ctime;
425 unsigned int sem_nsems;
426 unsigned int __unused1;
427 unsigned int __unused2;
428};
429
430struct msqid_ds32
431{
432 struct ipc_perm32 msg_perm;
433 u32 msg_first;
434 u32 msg_last;
435 compat_time_t msg_stime;
436 compat_time_t msg_rtime;
437 compat_time_t msg_ctime;
438 u32 wwait;
439 u32 rwait;
440 unsigned short msg_cbytes;
441 unsigned short msg_qnum;
442 unsigned short msg_qbytes;
443 compat_ipc_pid_t msg_lspid;
444 compat_ipc_pid_t msg_lrpid;
445};
446
447struct msqid64_ds32 {
448 struct ipc64_perm32 msg_perm;
449 compat_time_t msg_stime;
450 unsigned int __unused1;
451 compat_time_t msg_rtime;
452 unsigned int __unused2;
453 compat_time_t msg_ctime;
454 unsigned int __unused3;
455 unsigned int msg_cbytes;
456 unsigned int msg_qnum;
457 unsigned int msg_qbytes;
458 compat_pid_t msg_lspid;
459 compat_pid_t msg_lrpid;
460 unsigned int __unused4;
461 unsigned int __unused5;
462};
463
464struct shmid_ds32 {
465 struct ipc_perm32 shm_perm;
466 int shm_segsz;
467 compat_time_t shm_atime;
468 compat_time_t shm_dtime;
469 compat_time_t shm_ctime;
470 compat_ipc_pid_t shm_cpid;
471 compat_ipc_pid_t shm_lpid;
472 unsigned short shm_nattch;
473};
474
475struct shmid64_ds32 {
476 struct ipc64_perm32 shm_perm;
477 compat_size_t shm_segsz;
478 compat_time_t shm_atime;
479 compat_time_t shm_dtime;
480 compat_time_t shm_ctime;
481 compat_pid_t shm_cpid;
482 compat_pid_t shm_lpid;
483 unsigned int shm_nattch;
484 unsigned int __unused1;
485 unsigned int __unused2;
486};
487
488struct ipc_kludge32 {
489 u32 msgp;
490 s32 msgtyp;
491};
492
493static int
219ac73a 494do_sys32_semctl(int first, int second, int third, void __user *uptr)
1da177e4
LT		 495{
496 union semun fourth;
497 u32 pad;
498 int err, err2;
499 struct semid64_ds s;
500 mm_segment_t old_fs;
501
502 if (!uptr)
503 return -EINVAL;
504 err = -EFAULT;
219ac73a 505 if (get_user (pad, (u32 __user *)uptr))
1da177e4
LT		 506 return err;
507 if ((third & ~IPC_64) == SETVAL)
508 fourth.val = (int)pad;
509 else
219ac73a 510 fourth.__pad = (void __user *)A(pad);
1da177e4
LT		 511 switch (third & ~IPC_64) {
512 case IPC_INFO:
513 case IPC_RMID:
514 case IPC_SET:
515 case SEM_INFO:
516 case GETVAL:
517 case GETPID:
518 case GETNCNT:
519 case GETZCNT:
520 case GETALL:
521 case SETVAL:
522 case SETALL:
523 err = sys_semctl (first, second, third, fourth);
524 break;
525
526 case IPC_STAT:
527 case SEM_STAT:
219ac73a 528 fourth.__pad = (struct semid64_ds __user *)&s;
1da177e4
LT		 529 old_fs = get_fs();
530 set_fs(KERNEL_DS);
531 err = sys_semctl(first, second, third | IPC_64, fourth);
532 set_fs(old_fs);
533
534 if (third & IPC_64) {
219ac73a 535 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
1da177e4
LT		 536
537 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
538 err = -EFAULT;
539 break;
540 }
541 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
542 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
543 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
544 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
545 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
546 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
547 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
548 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
549 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
550 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
551 } else {
219ac73a 552 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
1da177e4
LT		 553
554 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
555 err = -EFAULT;
556 break;
557 }
558 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
559 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
560 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
561 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
562 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
563 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
564 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
565 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
566 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
567 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
568 }
569 if (err2)
570 err = -EFAULT;
571 break;
572
573 default:
574 err = - EINVAL;
575 break;
576 }
577
578 return err;
579}
580
581static int
219ac73a 582do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
1da177e4 583{
219ac73a 584 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 585 struct msgbuf *p;
586 mm_segment_t old_fs;
587 int err;
588
589 if (second < 0)
590 return -EINVAL;
591 p = kmalloc (second + sizeof (struct msgbuf)
592 + 4, GFP_USER);
593 if (!p)
594 return -ENOMEM;
595 err = get_user (p->mtype, &up->mtype);
596 if (err)
597 goto out;
598 err |= __copy_from_user (p->mtext, &up->mtext, second);
599 if (err)
600 goto out;
601 old_fs = get_fs ();
602 set_fs (KERNEL_DS);
219ac73a 603 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
1da177e4
LT		 604 set_fs (old_fs);
605out:
606 kfree (p);
607
608 return err;
609}
610
611static int
612do_sys32_msgrcv (int first, int second, int msgtyp, int third,
219ac73a 613 int version, void __user *uptr)
1da177e4 614{
219ac73a 615 struct msgbuf32 __user *up;
1da177e4
LT		 616 struct msgbuf *p;
617 mm_segment_t old_fs;
618 int err;
619
620 if (!version) {
219ac73a 621 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
1da177e4
LT		 622 struct ipc_kludge32 ipck;
623
624 err = -EINVAL;
625 if (!uptr)
626 goto out;
627 err = -EFAULT;
628 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
629 goto out;
219ac73a 630 uptr = (void __user *)AA(ipck.msgp);
1da177e4
LT		 631 msgtyp = ipck.msgtyp;
632 }
633
634 if (second < 0)
635 return -EINVAL;
636 err = -ENOMEM;
637 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
638 if (!p)
639 goto out;
640 old_fs = get_fs ();
641 set_fs (KERNEL_DS);
219ac73a 642 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
1da177e4
LT		 643 set_fs (old_fs);
644 if (err < 0)
645 goto free_then_out;
219ac73a 646 up = (struct msgbuf32 __user *)uptr;
1da177e4
LT		 647 if (put_user (p->mtype, &up->mtype) ||
648 __copy_to_user (&up->mtext, p->mtext, err))
649 err = -EFAULT;
650free_then_out:
651 kfree (p);
652out:
653 return err;
654}
655
656static int
219ac73a 657do_sys32_msgctl (int first, int second, void __user *uptr)
1da177e4
LT		 658{
659 int err = -EINVAL, err2;
660 struct msqid64_ds m;
219ac73a
AN		 661 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
662 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
1da177e4
LT		 663 mm_segment_t old_fs;
664
665 switch (second & ~IPC_64) {
666 case IPC_INFO:
667 case IPC_RMID:
668 case MSG_INFO:
219ac73a 669 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
1da177e4
LT		 670 break;
671
672 case IPC_SET:
673 if (second & IPC_64) {
674 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
675 err = -EFAULT;
676 break;
677 }
678 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
679 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
680 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
681 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
682 } else {
683 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
684 err = -EFAULT;
685 break;
686 }
687 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
688 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
689 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
690 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
691 }
692 if (err)
693 break;
694 old_fs = get_fs();
695 set_fs(KERNEL_DS);
219ac73a 696 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 697 set_fs(old_fs);
698 break;
699
700 case IPC_STAT:
701 case MSG_STAT:
702 old_fs = get_fs();
703 set_fs(KERNEL_DS);
219ac73a 704 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
1da177e4
LT		 705 set_fs(old_fs);
706 if (second & IPC_64) {
707 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
708 err = -EFAULT;
709 break;
710 }
711 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
712 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
713 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
714 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
715 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
716 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
717 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
718 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
719 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
720 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
721 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
722 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
723 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
724 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
725 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
726 if (err2)
727 err = -EFAULT;
728 } else {
729 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
730 err = -EFAULT;
731 break;
732 }
733 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
734 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
735 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
736 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
737 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
738 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
739 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
740 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
741 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
742 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
743 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
744 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
745 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
746 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
747 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
748 if (err2)
749 err = -EFAULT;
750 }
751 break;
752 }
753
754 return err;
755}
756
757static int
219ac73a 758do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
1da177e4
LT		 759{
760 unsigned long raddr;
219ac73a 761 u32 __user *uaddr = (u32 __user *)A((u32)third);
1da177e4
LT		 762 int err = -EINVAL;
763
764 if (version == 1)
765 return err;
766 err = do_shmat (first, uptr, second, &raddr);
767 if (err)
768 return err;
769 err = put_user (raddr, uaddr);
770 return err;
771}
772
773struct shm_info32 {
774 int used_ids;
775 u32 shm_tot, shm_rss, shm_swp;
776 u32 swap_attempts, swap_successes;
777};
778
779static int
219ac73a 780do_sys32_shmctl (int first, int second, void __user *uptr)
1da177e4 781{
219ac73a
AN		 782 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
783 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
784 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
1da177e4
LT		 785 int err = -EFAULT, err2;
786 struct shmid64_ds s64;
787 mm_segment_t old_fs;
788 struct shm_info si;
789 struct shmid_ds s;
790
791 switch (second & ~IPC_64) {
792 case IPC_INFO:
793 second = IPC_INFO; /* So that we don't have to translate it */
794 case IPC_RMID:
795 case SHM_LOCK:
796 case SHM_UNLOCK:
219ac73a 797 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
1da177e4
LT		 798 break;
799 case IPC_SET:
800 if (second & IPC_64) {
801 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
802 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
803 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
804 } else {
805 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
806 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
807 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
808 }
809 if (err)
810 break;
811 old_fs = get_fs();
812 set_fs(KERNEL_DS);
219ac73a 813 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
1da177e4
LT		 814 set_fs(old_fs);
815 break;
816
817 case IPC_STAT:
818 case SHM_STAT:
819 old_fs = get_fs();
820 set_fs(KERNEL_DS);
219ac73a 821 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
1da177e4
LT		 822 set_fs(old_fs);
823 if (err < 0)
824 break;
825 if (second & IPC_64) {
826 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
827 err = -EFAULT;
828 break;
829 }
830 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
831 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
832 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
833 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
834 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
835 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
836 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
837 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
838 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
839 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
840 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
841 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
842 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
843 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
844 } else {
845 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
846 err = -EFAULT;
847 break;
848 }
849 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
850 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
851 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
852 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
853 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
854 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
855 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
856 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
857 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
858 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
859 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
860 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
861 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
862 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
863 }
864 if (err2)
865 err = -EFAULT;
866 break;
867
868 case SHM_INFO:
869 old_fs = get_fs();
870 set_fs(KERNEL_DS);
219ac73a 871 err = sys_shmctl(first, second, (void __user *)&si);
1da177e4
LT		 872 set_fs(old_fs);
873 if (err < 0)
874 break;
875 err2 = put_user(si.used_ids, &uip->used_ids);
876 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
877 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
878 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
879 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
880 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
881 if (err2)
882 err = -EFAULT;
883 break;
884
885 default:
886 err = -EINVAL;
887 break;
888 }
889
890 return err;
891}
892
219ac73a
AN		 893static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
894 const struct compat_timespec __user *timeout32)
1da177e4
LT		 895{
896 struct compat_timespec t32;
219ac73a 897 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
1da177e4
LT		 898
899 if (copy_from_user(&t32, timeout32, sizeof(t32)))
900 return -EFAULT;
901
902 if (put_user(t32.tv_sec, &t64->tv_sec) ||
903 put_user(t32.tv_nsec, &t64->tv_nsec))
904 return -EFAULT;
905
906 return sys_semtimedop(semid, tsems, nsems, t64);
907}
908
909asmlinkage long
910sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
911{
912 int version, err;
913
914 version = call >> 16; /* hack for backward compatibility */
915 call &= 0xffff;
916
917 switch (call) {
918 case SEMOP:
919 /* struct sembuf is the same on 32 and 64bit :)) */
219ac73a 920 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 921 NULL);
922 break;
923 case SEMTIMEDOP:
219ac73a 924 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
1da177e4
LT		 925 (const struct compat_timespec __user *)AA(fifth));
926 break;
927 case SEMGET:
928 err = sys_semget (first, second, third);
929 break;
930 case SEMCTL:
931 err = do_sys32_semctl (first, second, third,
219ac73a 932 (void __user *)AA(ptr));
1da177e4
LT		 933 break;
934
935 case MSGSND:
936 err = do_sys32_msgsnd (first, second, third,
219ac73a 937 (void __user *)AA(ptr));
1da177e4
LT		 938 break;
939 case MSGRCV:
940 err = do_sys32_msgrcv (first, second, fifth, third,
219ac73a 941 version, (void __user *)AA(ptr));
1da177e4
LT		 942 break;
943 case MSGGET:
944 err = sys_msgget ((key_t) first, second);
945 break;
946 case MSGCTL:
219ac73a 947 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 948 break;
949
950 case SHMAT:
951 err = do_sys32_shmat (first, second, third,
219ac73a 952 version, (void __user *)AA(ptr));
1da177e4
LT		 953 break;
954 case SHMDT:
219ac73a 955 err = sys_shmdt ((char __user *)A(ptr));
1da177e4
LT		 956 break;
957 case SHMGET:
958 err = sys_shmget (first, (unsigned)second, third);
959 break;
960 case SHMCTL:
219ac73a 961 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
1da177e4
LT		 962 break;
963 default:
964 err = -EINVAL;
965 break;
966 }
967
968 return err;
969}
970
971asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
219ac73a 972 int shmflg, int32_t __user *addr)
1da177e4
LT		 973{
974 unsigned long raddr;
975 int err;
976
977 err = do_shmat(shmid, shmaddr, shmflg, &raddr);
978 if (err)
979 return err;
980
981 return put_user(raddr, addr);
982}
983
984struct sysctl_args32
985{
986 compat_caddr_t name;
987 int nlen;
988 compat_caddr_t oldval;
989 compat_caddr_t oldlenp;
990 compat_caddr_t newval;
991 compat_size_t newlen;
992 unsigned int __unused[4];
993};
994
995#ifdef CONFIG_SYSCTL
996
219ac73a 997asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
1da177e4
LT		 998{
999 struct sysctl_args32 tmp;
1000 int error;
219ac73a
AN		 1001 size_t oldlen;
1002 size_t __user *oldlenp = NULL;
1003 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1da177e4
LT		 1004
1005 if (copy_from_user(&tmp, args, sizeof(tmp)))
1006 return -EFAULT;
1007
1008 if (tmp.oldval && tmp.oldlenp) {
1009 /* Duh, this is ugly and might not work if sysctl_args
1010 is in read-only memory, but do_sysctl does indirectly
1011 a lot of uaccess in both directions and we'd have to
1012 basically copy the whole sysctl.c here, and
1013 glibc's __sysctl uses rw memory for the structure
1014 anyway. */
219ac73a
AN		 1015 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1016 put_user(oldlen, (size_t __user *)addr))
1da177e4 1017 return -EFAULT;
219ac73a 1018 oldlenp = (size_t __user *)addr;
1da177e4
LT		 1019 }
1020
1021 lock_kernel();
219ac73a
AN		 1022 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1023 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1da177e4
LT		 1024 unlock_kernel();
1025 if (oldlenp) {
1026 if (!error) {
219ac73a
AN		 1027 if (get_user(oldlen, (size_t __user *)addr) ||
1028 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1da177e4
LT		 1029 error = -EFAULT;
1030 }
1031 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1032 }
1033 return error;
1034}
1035
1036#endif /* CONFIG_SYSCTL */
1037
219ac73a 1038asmlinkage long sys32_newuname(struct new_utsname __user * name)
1da177e4
LT		 1039{
1040 int ret = 0;
1041
1042 down_read(&uts_sem);
1043 if (copy_to_user(name,&system_utsname,sizeof *name))
1044 ret = -EFAULT;
1045 up_read(&uts_sem);
1046
1047 if (current->personality == PER_LINUX32 && !ret)
1048 if (copy_to_user(name->machine, "mips\0\0\0", 8))
1049 ret = -EFAULT;
1050
1051 return ret;
1052}
1053
1054asmlinkage int sys32_personality(unsigned long personality)
1055{
1056 int ret;
1057 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
1058 personality = PER_LINUX32;
1059 ret = sys_personality(personality);
1060 if (ret == PER_LINUX32)
1061 ret = PER_LINUX;
1062 return ret;
1063}
1064
1065/* ustat compatibility */
1066struct ustat32 {
1067 compat_daddr_t f_tfree;
1068 compat_ino_t f_tinode;
1069 char f_fname[6];
1070 char f_fpack[6];
1071};
1072
219ac73a 1073extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
1da177e4 1074
219ac73a 1075asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
1da177e4
LT		 1076{
1077 int err;
1078 struct ustat tmp;
1079 struct ustat32 tmp32;
1080 mm_segment_t old_fs = get_fs();
1081
1082 set_fs(KERNEL_DS);
219ac73a 1083 err = sys_ustat(dev, (struct ustat __user *)&tmp);
1da177e4
LT		 1084 set_fs (old_fs);
1085
1086 if (err)
1087 goto out;
1088
1089 memset(&tmp32,0,sizeof(struct ustat32));
1090 tmp32.f_tfree = tmp.f_tfree;
1091 tmp32.f_tinode = tmp.f_tinode;
1092
1093 err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
1094
1095out:
1096 return err;
1097}
1098
219ac73a 1099asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
1da177e4
LT		 1100 s32 count)
1101{
1102 mm_segment_t old_fs = get_fs();
1103 int ret;
1104 off_t of;
42a3b4f2 1105
1da177e4
LT		 1106 if (offset && get_user(of, offset))
1107 return -EFAULT;
42a3b4f2 1108
1da177e4 1109 set_fs(KERNEL_DS);
219ac73a 1110 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1da177e4 1111 set_fs(old_fs);
42a3b4f2 1112
1da177e4
LT		 1113 if (offset && put_user(of, offset))
1114 return -EFAULT;
42a3b4f2 1115
1da177e4
LT		 1116 return ret;
1117}
1118
1119asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
1120 size_t count)
1121{
1122 return sys_readahead(fd, merge_64(a2, a3), count);
1123}
1124
a8d587a7
RB		 1125asmlinkage long sys32_sync_file_range(int fd, int __pad,
1126 unsigned long a2, unsigned long a3,
1127 unsigned long a4, unsigned long a5,
1128 int flags)
1129{
1130 return sys_sync_file_range(fd,
1131 merge_64(a2, a3), merge_64(a4, a5),
1132 flags);
1133}
1134
1da177e4
LT		 1135/* Argument list sizes for sys_socketcall */
1136#define AL(x) ((x) * sizeof(unsigned int))
1137static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
1138 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
1139 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
1140#undef AL
1141
1142/*
42a3b4f2 1143 * System call vectors.
1da177e4
LT		 1144 *
1145 * Argument checking cleaned up. Saved 20% in size.
1146 * This function doesn't need to set the kernel lock because
42a3b4f2 1147 * it is set by the callees.
1da177e4
LT		 1148 */
1149
219ac73a 1150asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
1da177e4
LT		 1151{
1152 unsigned int a[6];
1153 unsigned int a0,a1;
1154 int err;
1155
1156 extern asmlinkage long sys_socket(int family, int type, int protocol);
1157 extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
1158 extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
1159 extern asmlinkage long sys_listen(int fd, int backlog);
1160 extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
1161 extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1162 extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
1163 extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
1164 extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
1165 extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
1166 struct sockaddr __user *addr, int addr_len);
1167 extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
1168 extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
1169 struct sockaddr __user *addr, int __user *addr_len);
1170 extern asmlinkage long sys_shutdown(int fd, int how);
1171 extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
219ac73a 1172 extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
1da177e4
LT		 1173 extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
1174 extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
1175
1176
1177 if(call<1||call>SYS_RECVMSG)
1178 return -EINVAL;
1179
1180 /* copy_from_user should be SMP safe. */
1181 if (copy_from_user(a, args32, socketcall_nargs[call]))
1182 return -EFAULT;
42a3b4f2 1183
1da177e4
LT		 1184 a0=a[0];
1185 a1=a[1];
42a3b4f2
RB		 1186
1187 switch(call)
1da177e4
LT		 1188 {
1189 case SYS_SOCKET:
1190 err = sys_socket(a0,a1,a[2]);
1191 break;
1192 case SYS_BIND:
1193 err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
1194 break;
1195 case SYS_CONNECT:
1196 err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
1197 break;
1198 case SYS_LISTEN:
1199 err = sys_listen(a0,a1);
1200 break;
1201 case SYS_ACCEPT:
1202 err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1203 break;
1204 case SYS_GETSOCKNAME:
1205 err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1206 break;
1207 case SYS_GETPEERNAME:
1208 err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
1209 break;
1210 case SYS_SOCKETPAIR:
1211 err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
1212 break;
1213 case SYS_SEND:
1214 err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
1215 break;
1216 case SYS_SENDTO:
1217 err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
1218 (struct sockaddr __user *)A(a[4]), a[5]);
1219 break;
1220 case SYS_RECV:
1221 err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
1222 break;
1223 case SYS_RECVFROM:
1224 err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
1225 (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
1226 break;
1227 case SYS_SHUTDOWN:
1228 err = sys_shutdown(a0,a1);
1229 break;
1230 case SYS_SETSOCKOPT:
1231 err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
1232 break;
1233 case SYS_GETSOCKOPT:
1234 err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
1235 break;
1236 case SYS_SENDMSG:
1237 err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1238 break;
1239 case SYS_RECVMSG:
1240 err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
1241 break;
1242 default:
1243 err = -EINVAL;
1244 break;
1245 }
1246 return err;
1247}
d1abb6a2
RB		 1248
1249struct sigevent32 {
1250 u32 sigev_value;
1251 u32 sigev_signo;
1252 u32 sigev_notify;
1253 u32 payload[(64 / 4) - 3];
1254};
1255
1256extern asmlinkage long
1257sys_timer_create(clockid_t which_clock,
1258 struct sigevent __user *timer_event_spec,
1259 timer_t __user * created_timer_id);
1260
1261long
1262sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1263{
1264 struct sigevent __user *p = NULL;
1265 if (se32) {
1266 struct sigevent se;
1267 p = compat_alloc_user_space(sizeof(struct sigevent));
1268 memset(&se, 0, sizeof(struct sigevent));
1269 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1270 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1271 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1272 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1273 sizeof(se32->payload)) ||
1274 copy_to_user(p, &se, sizeof(se)))
1275 return -EFAULT;
1276 }
1277 return sys_timer_create(clock, p, timer_id);
1278}
1279
3c37026d
RB		 1280save_static_function(sys32_clone);
1281__attribute_used__ noinline static int
1282_sys32_clone(nabi_no_regargs struct pt_regs regs)
1283{
1284 unsigned long clone_flags;
1285 unsigned long newsp;
1286 int __user *parent_tidptr, *child_tidptr;
1287
1288 clone_flags = regs.regs[4];
1289 newsp = regs.regs[5];
1290 if (!newsp)
1291 newsp = regs.regs[29];
219ac73a 1292 parent_tidptr = (int __user *) regs.regs[6];
3c37026d
RB		 1293
1294 /* Use __dummy4 instead of getting it off the stack, so that
1295 syscall() works. */
1296 child_tidptr = (int __user *) __dummy4;
1297 return do_fork(clone_flags, newsp, &regs, 0,
1298 parent_tidptr, child_tidptr);
1299}
1300
1301extern asmlinkage void sys_set_thread_area(u32 addr);
1302asmlinkage void sys32_set_thread_area(u32 addr)
1303{
1304 sys_set_thread_area(AA(addr));
1305}
Linux kernel - Deliverables
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