Commit | Line | Data |
---|---|---|
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 | ||
72 | int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf) | |
73 | { | |
74 | struct compat_stat tmp; | |
75 | ||
76 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
77 | return -EOVERFLOW; | |
78 | ||
79 | memset(&tmp, 0, sizeof(tmp)); | |
80 | tmp.st_dev = new_encode_dev(stat->dev); | |
81 | tmp.st_ino = stat->ino; | |
82 | tmp.st_mode = stat->mode; | |
83 | tmp.st_nlink = stat->nlink; | |
84 | SET_UID(tmp.st_uid, stat->uid); | |
85 | SET_GID(tmp.st_gid, stat->gid); | |
86 | tmp.st_rdev = new_encode_dev(stat->rdev); | |
87 | tmp.st_size = stat->size; | |
88 | tmp.st_atime = stat->atime.tv_sec; | |
89 | tmp.st_mtime = stat->mtime.tv_sec; | |
90 | tmp.st_ctime = stat->ctime.tv_sec; | |
91 | #ifdef STAT_HAVE_NSEC | |
92 | tmp.st_atime_nsec = stat->atime.tv_nsec; | |
93 | tmp.st_mtime_nsec = stat->mtime.tv_nsec; | |
94 | tmp.st_ctime_nsec = stat->ctime.tv_nsec; | |
95 | #endif | |
96 | tmp.st_blocks = stat->blocks; | |
97 | tmp.st_blksize = stat->blksize; | |
98 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
99 | } | |
100 | ||
101 | asmlinkage unsigned long | |
102 | sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, | |
103 | unsigned long flags, unsigned long fd, unsigned long pgoff) | |
104 | { | |
105 | struct file * file = NULL; | |
106 | unsigned long error; | |
107 | ||
108 | error = -EINVAL; | |
109 | if (!(flags & MAP_ANONYMOUS)) { | |
110 | error = -EBADF; | |
111 | file = fget(fd); | |
112 | if (!file) | |
113 | goto out; | |
114 | } | |
115 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
116 | ||
117 | down_write(¤t->mm->mmap_sem); | |
118 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); | |
119 | up_write(¤t->mm->mmap_sem); | |
120 | if (file) | |
121 | fput(file); | |
122 | ||
123 | out: | |
124 | return error; | |
125 | } | |
126 | ||
127 | ||
128 | asmlinkage int sys_truncate64(const char *path, unsigned int high, | |
129 | unsigned int low) | |
130 | { | |
131 | if ((int)high < 0) | |
132 | return -EINVAL; | |
133 | return sys_truncate(path, ((long) high << 32) | low); | |
134 | } | |
135 | ||
136 | asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, | |
137 | unsigned int low) | |
138 | { | |
139 | if ((int)high < 0) | |
140 | return -EINVAL; | |
141 | return sys_ftruncate(fd, ((long) high << 32) | low); | |
142 | } | |
143 | ||
144 | /* | |
145 | * sys_execve() executes a new program. | |
146 | */ | |
147 | asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) | |
148 | { | |
149 | int error; | |
150 | char * filename; | |
151 | ||
152 | filename = getname(compat_ptr(regs.regs[4])); | |
153 | error = PTR_ERR(filename); | |
154 | if (IS_ERR(filename)) | |
155 | goto out; | |
156 | error = compat_do_execve(filename, compat_ptr(regs.regs[5]), | |
157 | compat_ptr(regs.regs[6]), ®s); | |
158 | putname(filename); | |
159 | ||
160 | out: | |
161 | return error; | |
162 | } | |
163 | ||
164 | struct dirent32 { | |
165 | unsigned int d_ino; | |
166 | unsigned int d_off; | |
167 | unsigned short d_reclen; | |
168 | char d_name[NAME_MAX + 1]; | |
169 | }; | |
170 | ||
171 | static void | |
172 | xlate_dirent(void *dirent64, void *dirent32, long n) | |
173 | { | |
174 | long off; | |
175 | struct dirent *dirp; | |
176 | struct dirent32 *dirp32; | |
177 | ||
178 | off = 0; | |
179 | while (off < n) { | |
180 | dirp = (struct dirent *)(dirent64 + off); | |
181 | dirp32 = (struct dirent32 *)(dirent32 + off); | |
182 | off += dirp->d_reclen; | |
183 | dirp32->d_ino = dirp->d_ino; | |
184 | dirp32->d_off = (unsigned int)dirp->d_off; | |
185 | dirp32->d_reclen = dirp->d_reclen; | |
186 | strncpy(dirp32->d_name, dirp->d_name, dirp->d_reclen - ((3 * 4) + 2)); | |
187 | } | |
188 | return; | |
189 | } | |
190 | ||
191 | asmlinkage long | |
192 | sys32_getdents(unsigned int fd, void * dirent32, unsigned int count) | |
193 | { | |
194 | long n; | |
195 | void *dirent64; | |
196 | ||
197 | dirent64 = (void *)((unsigned long)(dirent32 + (sizeof(long) - 1)) & ~(sizeof(long) - 1)); | |
198 | if ((n = sys_getdents(fd, dirent64, count - (dirent64 - dirent32))) < 0) | |
199 | return(n); | |
200 | xlate_dirent(dirent64, dirent32, n); | |
201 | return(n); | |
202 | } | |
203 | ||
204 | asmlinkage int old_readdir(unsigned int fd, void * dirent, unsigned int count); | |
205 | ||
206 | asmlinkage int | |
207 | sys32_readdir(unsigned int fd, void * dirent32, unsigned int count) | |
208 | { | |
209 | int n; | |
210 | struct dirent dirent64; | |
211 | ||
212 | if ((n = old_readdir(fd, &dirent64, count)) < 0) | |
213 | return(n); | |
214 | xlate_dirent(&dirent64, dirent32, dirent64.d_reclen); | |
215 | return(n); | |
216 | } | |
217 | ||
1da177e4 LT |
218 | asmlinkage int |
219 | sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options) | |
220 | { | |
b6e203d8 | 221 | return compat_sys_wait4(pid, stat_addr, options, NULL); |
1da177e4 LT |
222 | } |
223 | ||
54f2da75 RB |
224 | asmlinkage long |
225 | sysn32_waitid(int which, compat_pid_t pid, | |
226 | siginfo_t __user *uinfo, int options, | |
227 | struct compat_rusage __user *uru) | |
228 | { | |
229 | struct rusage ru; | |
230 | long ret; | |
231 | mm_segment_t old_fs = get_fs(); | |
232 | ||
233 | set_fs (KERNEL_DS); | |
234 | ret = sys_waitid(which, pid, uinfo, options, | |
235 | uru ? (struct rusage __user *) &ru : NULL); | |
236 | set_fs (old_fs); | |
237 | ||
238 | if (ret < 0 || uinfo->si_signo == 0) | |
239 | return ret; | |
240 | ||
241 | if (uru) | |
242 | ret = put_compat_rusage(&ru, uru); | |
243 | return ret; | |
244 | } | |
245 | ||
1da177e4 LT |
246 | struct sysinfo32 { |
247 | s32 uptime; | |
248 | u32 loads[3]; | |
249 | u32 totalram; | |
250 | u32 freeram; | |
251 | u32 sharedram; | |
252 | u32 bufferram; | |
253 | u32 totalswap; | |
254 | u32 freeswap; | |
255 | u16 procs; | |
256 | u32 totalhigh; | |
257 | u32 freehigh; | |
258 | u32 mem_unit; | |
259 | char _f[8]; | |
260 | }; | |
261 | ||
262 | asmlinkage int sys32_sysinfo(struct sysinfo32 *info) | |
263 | { | |
264 | struct sysinfo s; | |
265 | int ret, err; | |
266 | mm_segment_t old_fs = get_fs (); | |
42a3b4f2 | 267 | |
1da177e4 LT |
268 | set_fs (KERNEL_DS); |
269 | ret = sys_sysinfo(&s); | |
270 | set_fs (old_fs); | |
271 | err = put_user (s.uptime, &info->uptime); | |
272 | err |= __put_user (s.loads[0], &info->loads[0]); | |
273 | err |= __put_user (s.loads[1], &info->loads[1]); | |
274 | err |= __put_user (s.loads[2], &info->loads[2]); | |
275 | err |= __put_user (s.totalram, &info->totalram); | |
276 | err |= __put_user (s.freeram, &info->freeram); | |
277 | err |= __put_user (s.sharedram, &info->sharedram); | |
278 | err |= __put_user (s.bufferram, &info->bufferram); | |
279 | err |= __put_user (s.totalswap, &info->totalswap); | |
280 | err |= __put_user (s.freeswap, &info->freeswap); | |
281 | err |= __put_user (s.procs, &info->procs); | |
282 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
283 | err |= __put_user (s.freehigh, &info->freehigh); | |
284 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
285 | if (err) | |
286 | return -EFAULT; | |
287 | return ret; | |
288 | } | |
289 | ||
290 | #define RLIM_INFINITY32 0x7fffffff | |
291 | #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) | |
292 | ||
293 | struct rlimit32 { | |
294 | int rlim_cur; | |
295 | int rlim_max; | |
296 | }; | |
297 | ||
298 | #ifdef __MIPSEB__ | |
299 | asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy, | |
300 | int length_hi, int length_lo) | |
301 | #endif | |
302 | #ifdef __MIPSEL__ | |
303 | asmlinkage long sys32_truncate64(const char * path, unsigned long __dummy, | |
304 | int length_lo, int length_hi) | |
305 | #endif | |
306 | { | |
307 | loff_t length; | |
308 | ||
309 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
310 | ||
311 | return sys_truncate(path, length); | |
312 | } | |
313 | ||
314 | #ifdef __MIPSEB__ | |
315 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
316 | int length_hi, int length_lo) | |
317 | #endif | |
318 | #ifdef __MIPSEL__ | |
319 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
320 | int length_lo, int length_hi) | |
321 | #endif | |
322 | { | |
323 | loff_t length; | |
324 | ||
325 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
326 | ||
327 | return sys_ftruncate(fd, length); | |
328 | } | |
329 | ||
330 | static inline long | |
331 | get_tv32(struct timeval *o, struct compat_timeval *i) | |
332 | { | |
333 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
334 | (__get_user(o->tv_sec, &i->tv_sec) | | |
335 | __get_user(o->tv_usec, &i->tv_usec))); | |
336 | } | |
337 | ||
338 | static inline long | |
339 | put_tv32(struct compat_timeval *o, struct timeval *i) | |
340 | { | |
341 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
342 | (__put_user(i->tv_sec, &o->tv_sec) | | |
343 | __put_user(i->tv_usec, &o->tv_usec))); | |
344 | } | |
345 | ||
346 | extern struct timezone sys_tz; | |
347 | ||
348 | asmlinkage int | |
349 | sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz) | |
350 | { | |
351 | if (tv) { | |
352 | struct timeval ktv; | |
353 | do_gettimeofday(&ktv); | |
354 | if (put_tv32(tv, &ktv)) | |
355 | return -EFAULT; | |
356 | } | |
357 | if (tz) { | |
358 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
359 | return -EFAULT; | |
360 | } | |
361 | return 0; | |
362 | } | |
363 | ||
364 | static inline long get_ts32(struct timespec *o, struct compat_timeval *i) | |
365 | { | |
366 | long usec; | |
367 | ||
368 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
369 | return -EFAULT; | |
370 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
371 | return -EFAULT; | |
372 | if (__get_user(usec, &i->tv_usec)) | |
373 | return -EFAULT; | |
374 | o->tv_nsec = usec * 1000; | |
375 | return 0; | |
376 | } | |
377 | ||
378 | asmlinkage int | |
379 | sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz) | |
380 | { | |
381 | struct timespec kts; | |
382 | struct timezone ktz; | |
383 | ||
384 | if (tv) { | |
385 | if (get_ts32(&kts, tv)) | |
386 | return -EFAULT; | |
387 | } | |
388 | if (tz) { | |
389 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
390 | return -EFAULT; | |
391 | } | |
392 | ||
393 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
394 | } | |
395 | ||
396 | asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, | |
397 | unsigned int offset_low, loff_t * result, | |
398 | unsigned int origin) | |
399 | { | |
400 | return sys_llseek(fd, offset_high, offset_low, result, origin); | |
401 | } | |
402 | ||
403 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + | |
404 | lseek back to original location. They fail just like lseek does on | |
405 | non-seekable files. */ | |
406 | ||
407 | asmlinkage ssize_t sys32_pread(unsigned int fd, char * buf, | |
408 | size_t count, u32 unused, u64 a4, u64 a5) | |
409 | { | |
410 | ssize_t ret; | |
411 | struct file * file; | |
412 | ssize_t (*read)(struct file *, char *, size_t, loff_t *); | |
413 | loff_t pos; | |
414 | ||
415 | ret = -EBADF; | |
416 | file = fget(fd); | |
417 | if (!file) | |
418 | goto bad_file; | |
419 | if (!(file->f_mode & FMODE_READ)) | |
420 | goto out; | |
421 | pos = merge_64(a4, a5); | |
422 | ret = rw_verify_area(READ, file, &pos, count); | |
423 | if (ret) | |
424 | goto out; | |
425 | ret = -EINVAL; | |
426 | if (!file->f_op || !(read = file->f_op->read)) | |
427 | goto out; | |
428 | if (pos < 0) | |
429 | goto out; | |
430 | ret = -ESPIPE; | |
431 | if (!(file->f_mode & FMODE_PREAD)) | |
432 | goto out; | |
433 | ret = read(file, buf, count, &pos); | |
434 | if (ret > 0) | |
435 | dnotify_parent(file->f_dentry, DN_ACCESS); | |
436 | out: | |
437 | fput(file); | |
438 | bad_file: | |
439 | return ret; | |
440 | } | |
441 | ||
442 | asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char * buf, | |
443 | size_t count, u32 unused, u64 a4, u64 a5) | |
444 | { | |
445 | ssize_t ret; | |
446 | struct file * file; | |
447 | ssize_t (*write)(struct file *, const char *, size_t, loff_t *); | |
448 | loff_t pos; | |
449 | ||
450 | ret = -EBADF; | |
451 | file = fget(fd); | |
452 | if (!file) | |
453 | goto bad_file; | |
454 | if (!(file->f_mode & FMODE_WRITE)) | |
455 | goto out; | |
456 | pos = merge_64(a4, a5); | |
457 | ret = rw_verify_area(WRITE, file, &pos, count); | |
458 | if (ret) | |
459 | goto out; | |
460 | ret = -EINVAL; | |
461 | if (!file->f_op || !(write = file->f_op->write)) | |
462 | goto out; | |
463 | if (pos < 0) | |
464 | goto out; | |
465 | ||
466 | ret = -ESPIPE; | |
467 | if (!(file->f_mode & FMODE_PWRITE)) | |
468 | goto out; | |
469 | ||
470 | ret = write(file, buf, count, &pos); | |
471 | if (ret > 0) | |
472 | dnotify_parent(file->f_dentry, DN_MODIFY); | |
473 | out: | |
474 | fput(file); | |
475 | bad_file: | |
476 | return ret; | |
477 | } | |
478 | ||
479 | asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, | |
480 | struct compat_timespec *interval) | |
481 | { | |
482 | struct timespec t; | |
483 | int ret; | |
484 | mm_segment_t old_fs = get_fs (); | |
485 | ||
486 | set_fs (KERNEL_DS); | |
487 | ret = sys_sched_rr_get_interval(pid, &t); | |
488 | set_fs (old_fs); | |
489 | if (put_user (t.tv_sec, &interval->tv_sec) || | |
490 | __put_user (t.tv_nsec, &interval->tv_nsec)) | |
491 | return -EFAULT; | |
492 | return ret; | |
493 | } | |
494 | ||
495 | struct msgbuf32 { s32 mtype; char mtext[1]; }; | |
496 | ||
497 | struct ipc_perm32 | |
498 | { | |
499 | key_t key; | |
202e5979 SR |
500 | __compat_uid_t uid; |
501 | __compat_gid_t gid; | |
502 | __compat_uid_t cuid; | |
503 | __compat_gid_t cgid; | |
1da177e4 LT |
504 | compat_mode_t mode; |
505 | unsigned short seq; | |
506 | }; | |
507 | ||
508 | struct ipc64_perm32 { | |
509 | key_t key; | |
202e5979 SR |
510 | __compat_uid_t uid; |
511 | __compat_gid_t gid; | |
512 | __compat_uid_t cuid; | |
513 | __compat_gid_t cgid; | |
42a3b4f2 | 514 | compat_mode_t mode; |
1da177e4 LT |
515 | unsigned short seq; |
516 | unsigned short __pad1; | |
517 | unsigned int __unused1; | |
518 | unsigned int __unused2; | |
519 | }; | |
520 | ||
521 | struct semid_ds32 { | |
522 | struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ | |
523 | compat_time_t sem_otime; /* last semop time */ | |
524 | compat_time_t sem_ctime; /* last change time */ | |
525 | u32 sem_base; /* ptr to first semaphore in array */ | |
526 | u32 sem_pending; /* pending operations to be processed */ | |
527 | u32 sem_pending_last; /* last pending operation */ | |
528 | u32 undo; /* undo requests on this array */ | |
529 | unsigned short sem_nsems; /* no. of semaphores in array */ | |
530 | }; | |
531 | ||
532 | struct semid64_ds32 { | |
533 | struct ipc64_perm32 sem_perm; | |
534 | compat_time_t sem_otime; | |
535 | compat_time_t sem_ctime; | |
536 | unsigned int sem_nsems; | |
537 | unsigned int __unused1; | |
538 | unsigned int __unused2; | |
539 | }; | |
540 | ||
541 | struct msqid_ds32 | |
542 | { | |
543 | struct ipc_perm32 msg_perm; | |
544 | u32 msg_first; | |
545 | u32 msg_last; | |
546 | compat_time_t msg_stime; | |
547 | compat_time_t msg_rtime; | |
548 | compat_time_t msg_ctime; | |
549 | u32 wwait; | |
550 | u32 rwait; | |
551 | unsigned short msg_cbytes; | |
552 | unsigned short msg_qnum; | |
553 | unsigned short msg_qbytes; | |
554 | compat_ipc_pid_t msg_lspid; | |
555 | compat_ipc_pid_t msg_lrpid; | |
556 | }; | |
557 | ||
558 | struct msqid64_ds32 { | |
559 | struct ipc64_perm32 msg_perm; | |
560 | compat_time_t msg_stime; | |
561 | unsigned int __unused1; | |
562 | compat_time_t msg_rtime; | |
563 | unsigned int __unused2; | |
564 | compat_time_t msg_ctime; | |
565 | unsigned int __unused3; | |
566 | unsigned int msg_cbytes; | |
567 | unsigned int msg_qnum; | |
568 | unsigned int msg_qbytes; | |
569 | compat_pid_t msg_lspid; | |
570 | compat_pid_t msg_lrpid; | |
571 | unsigned int __unused4; | |
572 | unsigned int __unused5; | |
573 | }; | |
574 | ||
575 | struct shmid_ds32 { | |
576 | struct ipc_perm32 shm_perm; | |
577 | int shm_segsz; | |
578 | compat_time_t shm_atime; | |
579 | compat_time_t shm_dtime; | |
580 | compat_time_t shm_ctime; | |
581 | compat_ipc_pid_t shm_cpid; | |
582 | compat_ipc_pid_t shm_lpid; | |
583 | unsigned short shm_nattch; | |
584 | }; | |
585 | ||
586 | struct shmid64_ds32 { | |
587 | struct ipc64_perm32 shm_perm; | |
588 | compat_size_t shm_segsz; | |
589 | compat_time_t shm_atime; | |
590 | compat_time_t shm_dtime; | |
591 | compat_time_t shm_ctime; | |
592 | compat_pid_t shm_cpid; | |
593 | compat_pid_t shm_lpid; | |
594 | unsigned int shm_nattch; | |
595 | unsigned int __unused1; | |
596 | unsigned int __unused2; | |
597 | }; | |
598 | ||
599 | struct ipc_kludge32 { | |
600 | u32 msgp; | |
601 | s32 msgtyp; | |
602 | }; | |
603 | ||
604 | static int | |
605 | do_sys32_semctl(int first, int second, int third, void *uptr) | |
606 | { | |
607 | union semun fourth; | |
608 | u32 pad; | |
609 | int err, err2; | |
610 | struct semid64_ds s; | |
611 | mm_segment_t old_fs; | |
612 | ||
613 | if (!uptr) | |
614 | return -EINVAL; | |
615 | err = -EFAULT; | |
616 | if (get_user (pad, (u32 *)uptr)) | |
617 | return err; | |
618 | if ((third & ~IPC_64) == SETVAL) | |
619 | fourth.val = (int)pad; | |
620 | else | |
621 | fourth.__pad = (void *)A(pad); | |
622 | switch (third & ~IPC_64) { | |
623 | case IPC_INFO: | |
624 | case IPC_RMID: | |
625 | case IPC_SET: | |
626 | case SEM_INFO: | |
627 | case GETVAL: | |
628 | case GETPID: | |
629 | case GETNCNT: | |
630 | case GETZCNT: | |
631 | case GETALL: | |
632 | case SETVAL: | |
633 | case SETALL: | |
634 | err = sys_semctl (first, second, third, fourth); | |
635 | break; | |
636 | ||
637 | case IPC_STAT: | |
638 | case SEM_STAT: | |
639 | fourth.__pad = &s; | |
640 | old_fs = get_fs(); | |
641 | set_fs(KERNEL_DS); | |
642 | err = sys_semctl(first, second, third | IPC_64, fourth); | |
643 | set_fs(old_fs); | |
644 | ||
645 | if (third & IPC_64) { | |
646 | struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad); | |
647 | ||
648 | if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { | |
649 | err = -EFAULT; | |
650 | break; | |
651 | } | |
652 | err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); | |
653 | err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); | |
654 | err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); | |
655 | err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); | |
656 | err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); | |
657 | err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); | |
658 | err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); | |
659 | err2 |= __put_user(s.sem_otime, &usp64->sem_otime); | |
660 | err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); | |
661 | err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); | |
662 | } else { | |
663 | struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad); | |
664 | ||
665 | if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { | |
666 | err = -EFAULT; | |
667 | break; | |
668 | } | |
669 | err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); | |
670 | err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); | |
671 | err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); | |
672 | err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); | |
673 | err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); | |
674 | err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); | |
675 | err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); | |
676 | err2 |= __put_user(s.sem_otime, &usp32->sem_otime); | |
677 | err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); | |
678 | err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); | |
679 | } | |
680 | if (err2) | |
681 | err = -EFAULT; | |
682 | break; | |
683 | ||
684 | default: | |
685 | err = - EINVAL; | |
686 | break; | |
687 | } | |
688 | ||
689 | return err; | |
690 | } | |
691 | ||
692 | static int | |
693 | do_sys32_msgsnd (int first, int second, int third, void *uptr) | |
694 | { | |
695 | struct msgbuf32 *up = (struct msgbuf32 *)uptr; | |
696 | struct msgbuf *p; | |
697 | mm_segment_t old_fs; | |
698 | int err; | |
699 | ||
700 | if (second < 0) | |
701 | return -EINVAL; | |
702 | p = kmalloc (second + sizeof (struct msgbuf) | |
703 | + 4, GFP_USER); | |
704 | if (!p) | |
705 | return -ENOMEM; | |
706 | err = get_user (p->mtype, &up->mtype); | |
707 | if (err) | |
708 | goto out; | |
709 | err |= __copy_from_user (p->mtext, &up->mtext, second); | |
710 | if (err) | |
711 | goto out; | |
712 | old_fs = get_fs (); | |
713 | set_fs (KERNEL_DS); | |
714 | err = sys_msgsnd (first, p, second, third); | |
715 | set_fs (old_fs); | |
716 | out: | |
717 | kfree (p); | |
718 | ||
719 | return err; | |
720 | } | |
721 | ||
722 | static int | |
723 | do_sys32_msgrcv (int first, int second, int msgtyp, int third, | |
724 | int version, void *uptr) | |
725 | { | |
726 | struct msgbuf32 *up; | |
727 | struct msgbuf *p; | |
728 | mm_segment_t old_fs; | |
729 | int err; | |
730 | ||
731 | if (!version) { | |
732 | struct ipc_kludge32 *uipck = (struct ipc_kludge32 *)uptr; | |
733 | struct ipc_kludge32 ipck; | |
734 | ||
735 | err = -EINVAL; | |
736 | if (!uptr) | |
737 | goto out; | |
738 | err = -EFAULT; | |
739 | if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32))) | |
740 | goto out; | |
741 | uptr = (void *)AA(ipck.msgp); | |
742 | msgtyp = ipck.msgtyp; | |
743 | } | |
744 | ||
745 | if (second < 0) | |
746 | return -EINVAL; | |
747 | err = -ENOMEM; | |
748 | p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); | |
749 | if (!p) | |
750 | goto out; | |
751 | old_fs = get_fs (); | |
752 | set_fs (KERNEL_DS); | |
753 | err = sys_msgrcv (first, p, second + 4, msgtyp, third); | |
754 | set_fs (old_fs); | |
755 | if (err < 0) | |
756 | goto free_then_out; | |
757 | up = (struct msgbuf32 *)uptr; | |
758 | if (put_user (p->mtype, &up->mtype) || | |
759 | __copy_to_user (&up->mtext, p->mtext, err)) | |
760 | err = -EFAULT; | |
761 | free_then_out: | |
762 | kfree (p); | |
763 | out: | |
764 | return err; | |
765 | } | |
766 | ||
767 | static int | |
768 | do_sys32_msgctl (int first, int second, void *uptr) | |
769 | { | |
770 | int err = -EINVAL, err2; | |
771 | struct msqid64_ds m; | |
772 | struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr; | |
773 | struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr; | |
774 | mm_segment_t old_fs; | |
775 | ||
776 | switch (second & ~IPC_64) { | |
777 | case IPC_INFO: | |
778 | case IPC_RMID: | |
779 | case MSG_INFO: | |
780 | err = sys_msgctl (first, second, (struct msqid_ds *)uptr); | |
781 | break; | |
782 | ||
783 | case IPC_SET: | |
784 | if (second & IPC_64) { | |
785 | if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) { | |
786 | err = -EFAULT; | |
787 | break; | |
788 | } | |
789 | err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid); | |
790 | err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid); | |
791 | err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode); | |
792 | err |= __get_user(m.msg_qbytes, &up64->msg_qbytes); | |
793 | } else { | |
794 | if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) { | |
795 | err = -EFAULT; | |
796 | break; | |
797 | } | |
798 | err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid); | |
799 | err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid); | |
800 | err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode); | |
801 | err |= __get_user(m.msg_qbytes, &up32->msg_qbytes); | |
802 | } | |
803 | if (err) | |
804 | break; | |
805 | old_fs = get_fs(); | |
806 | set_fs(KERNEL_DS); | |
807 | err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m); | |
808 | set_fs(old_fs); | |
809 | break; | |
810 | ||
811 | case IPC_STAT: | |
812 | case MSG_STAT: | |
813 | old_fs = get_fs(); | |
814 | set_fs(KERNEL_DS); | |
815 | err = sys_msgctl(first, second | IPC_64, (struct msqid_ds *)&m); | |
816 | set_fs(old_fs); | |
817 | if (second & IPC_64) { | |
818 | if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { | |
819 | err = -EFAULT; | |
820 | break; | |
821 | } | |
822 | err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key); | |
823 | err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid); | |
824 | err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid); | |
825 | err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid); | |
826 | err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid); | |
827 | err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode); | |
828 | err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq); | |
829 | err2 |= __put_user(m.msg_stime, &up64->msg_stime); | |
830 | err2 |= __put_user(m.msg_rtime, &up64->msg_rtime); | |
831 | err2 |= __put_user(m.msg_ctime, &up64->msg_ctime); | |
832 | err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes); | |
833 | err2 |= __put_user(m.msg_qnum, &up64->msg_qnum); | |
834 | err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes); | |
835 | err2 |= __put_user(m.msg_lspid, &up64->msg_lspid); | |
836 | err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid); | |
837 | if (err2) | |
838 | err = -EFAULT; | |
839 | } else { | |
840 | if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { | |
841 | err = -EFAULT; | |
842 | break; | |
843 | } | |
844 | err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key); | |
845 | err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid); | |
846 | err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid); | |
847 | err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid); | |
848 | err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid); | |
849 | err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode); | |
850 | err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq); | |
851 | err2 |= __put_user(m.msg_stime, &up32->msg_stime); | |
852 | err2 |= __put_user(m.msg_rtime, &up32->msg_rtime); | |
853 | err2 |= __put_user(m.msg_ctime, &up32->msg_ctime); | |
854 | err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes); | |
855 | err2 |= __put_user(m.msg_qnum, &up32->msg_qnum); | |
856 | err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes); | |
857 | err2 |= __put_user(m.msg_lspid, &up32->msg_lspid); | |
858 | err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid); | |
859 | if (err2) | |
860 | err = -EFAULT; | |
861 | } | |
862 | break; | |
863 | } | |
864 | ||
865 | return err; | |
866 | } | |
867 | ||
868 | static int | |
869 | do_sys32_shmat (int first, int second, int third, int version, void *uptr) | |
870 | { | |
871 | unsigned long raddr; | |
872 | u32 *uaddr = (u32 *)A((u32)third); | |
873 | int err = -EINVAL; | |
874 | ||
875 | if (version == 1) | |
876 | return err; | |
877 | err = do_shmat (first, uptr, second, &raddr); | |
878 | if (err) | |
879 | return err; | |
880 | err = put_user (raddr, uaddr); | |
881 | return err; | |
882 | } | |
883 | ||
884 | struct shm_info32 { | |
885 | int used_ids; | |
886 | u32 shm_tot, shm_rss, shm_swp; | |
887 | u32 swap_attempts, swap_successes; | |
888 | }; | |
889 | ||
890 | static int | |
891 | do_sys32_shmctl (int first, int second, void *uptr) | |
892 | { | |
893 | struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr; | |
894 | struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr; | |
895 | struct shm_info32 *uip = (struct shm_info32 *)uptr; | |
896 | int err = -EFAULT, err2; | |
897 | struct shmid64_ds s64; | |
898 | mm_segment_t old_fs; | |
899 | struct shm_info si; | |
900 | struct shmid_ds s; | |
901 | ||
902 | switch (second & ~IPC_64) { | |
903 | case IPC_INFO: | |
904 | second = IPC_INFO; /* So that we don't have to translate it */ | |
905 | case IPC_RMID: | |
906 | case SHM_LOCK: | |
907 | case SHM_UNLOCK: | |
908 | err = sys_shmctl(first, second, (struct shmid_ds *)uptr); | |
909 | break; | |
910 | case IPC_SET: | |
911 | if (second & IPC_64) { | |
912 | err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); | |
913 | err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); | |
914 | err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); | |
915 | } else { | |
916 | err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); | |
917 | err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); | |
918 | err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); | |
919 | } | |
920 | if (err) | |
921 | break; | |
922 | old_fs = get_fs(); | |
923 | set_fs(KERNEL_DS); | |
924 | err = sys_shmctl(first, second & ~IPC_64, &s); | |
925 | set_fs(old_fs); | |
926 | break; | |
927 | ||
928 | case IPC_STAT: | |
929 | case SHM_STAT: | |
930 | old_fs = get_fs(); | |
931 | set_fs(KERNEL_DS); | |
932 | err = sys_shmctl(first, second | IPC_64, (void *) &s64); | |
933 | set_fs(old_fs); | |
934 | if (err < 0) | |
935 | break; | |
936 | if (second & IPC_64) { | |
937 | if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { | |
938 | err = -EFAULT; | |
939 | break; | |
940 | } | |
941 | err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); | |
942 | err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); | |
943 | err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); | |
944 | err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); | |
945 | err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); | |
946 | err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); | |
947 | err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); | |
948 | err2 |= __put_user(s64.shm_atime, &up64->shm_atime); | |
949 | err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); | |
950 | err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); | |
951 | err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); | |
952 | err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); | |
953 | err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); | |
954 | err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); | |
955 | } else { | |
956 | if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { | |
957 | err = -EFAULT; | |
958 | break; | |
959 | } | |
960 | err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); | |
961 | err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); | |
962 | err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); | |
963 | err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); | |
964 | err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); | |
965 | err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); | |
966 | err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); | |
967 | err2 |= __put_user(s64.shm_atime, &up32->shm_atime); | |
968 | err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); | |
969 | err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); | |
970 | err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); | |
971 | err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); | |
972 | err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); | |
973 | err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); | |
974 | } | |
975 | if (err2) | |
976 | err = -EFAULT; | |
977 | break; | |
978 | ||
979 | case SHM_INFO: | |
980 | old_fs = get_fs(); | |
981 | set_fs(KERNEL_DS); | |
982 | err = sys_shmctl(first, second, (void *)&si); | |
983 | set_fs(old_fs); | |
984 | if (err < 0) | |
985 | break; | |
986 | err2 = put_user(si.used_ids, &uip->used_ids); | |
987 | err2 |= __put_user(si.shm_tot, &uip->shm_tot); | |
988 | err2 |= __put_user(si.shm_rss, &uip->shm_rss); | |
989 | err2 |= __put_user(si.shm_swp, &uip->shm_swp); | |
990 | err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); | |
991 | err2 |= __put_user (si.swap_successes, &uip->swap_successes); | |
992 | if (err2) | |
993 | err = -EFAULT; | |
994 | break; | |
995 | ||
996 | default: | |
997 | err = -EINVAL; | |
998 | break; | |
999 | } | |
1000 | ||
1001 | return err; | |
1002 | } | |
1003 | ||
1004 | static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems, | |
1005 | const struct compat_timespec *timeout32) | |
1006 | { | |
1007 | struct compat_timespec t32; | |
1008 | struct timespec *t64 = compat_alloc_user_space(sizeof(*t64)); | |
1009 | ||
1010 | if (copy_from_user(&t32, timeout32, sizeof(t32))) | |
1011 | return -EFAULT; | |
1012 | ||
1013 | if (put_user(t32.tv_sec, &t64->tv_sec) || | |
1014 | put_user(t32.tv_nsec, &t64->tv_nsec)) | |
1015 | return -EFAULT; | |
1016 | ||
1017 | return sys_semtimedop(semid, tsems, nsems, t64); | |
1018 | } | |
1019 | ||
1020 | asmlinkage long | |
1021 | sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) | |
1022 | { | |
1023 | int version, err; | |
1024 | ||
1025 | version = call >> 16; /* hack for backward compatibility */ | |
1026 | call &= 0xffff; | |
1027 | ||
1028 | switch (call) { | |
1029 | case SEMOP: | |
1030 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
1031 | err = sys_semtimedop (first, (struct sembuf *)AA(ptr), second, | |
1032 | NULL); | |
1033 | break; | |
1034 | case SEMTIMEDOP: | |
1035 | err = sys32_semtimedop (first, (struct sembuf *)AA(ptr), second, | |
1036 | (const struct compat_timespec __user *)AA(fifth)); | |
1037 | break; | |
1038 | case SEMGET: | |
1039 | err = sys_semget (first, second, third); | |
1040 | break; | |
1041 | case SEMCTL: | |
1042 | err = do_sys32_semctl (first, second, third, | |
1043 | (void *)AA(ptr)); | |
1044 | break; | |
1045 | ||
1046 | case MSGSND: | |
1047 | err = do_sys32_msgsnd (first, second, third, | |
1048 | (void *)AA(ptr)); | |
1049 | break; | |
1050 | case MSGRCV: | |
1051 | err = do_sys32_msgrcv (first, second, fifth, third, | |
1052 | version, (void *)AA(ptr)); | |
1053 | break; | |
1054 | case MSGGET: | |
1055 | err = sys_msgget ((key_t) first, second); | |
1056 | break; | |
1057 | case MSGCTL: | |
1058 | err = do_sys32_msgctl (first, second, (void *)AA(ptr)); | |
1059 | break; | |
1060 | ||
1061 | case SHMAT: | |
1062 | err = do_sys32_shmat (first, second, third, | |
1063 | version, (void *)AA(ptr)); | |
1064 | break; | |
1065 | case SHMDT: | |
1066 | err = sys_shmdt ((char *)A(ptr)); | |
1067 | break; | |
1068 | case SHMGET: | |
1069 | err = sys_shmget (first, (unsigned)second, third); | |
1070 | break; | |
1071 | case SHMCTL: | |
1072 | err = do_sys32_shmctl (first, second, (void *)AA(ptr)); | |
1073 | break; | |
1074 | default: | |
1075 | err = -EINVAL; | |
1076 | break; | |
1077 | } | |
1078 | ||
1079 | return err; | |
1080 | } | |
1081 | ||
1082 | asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, | |
1083 | int shmflg, int32_t *addr) | |
1084 | { | |
1085 | unsigned long raddr; | |
1086 | int err; | |
1087 | ||
1088 | err = do_shmat(shmid, shmaddr, shmflg, &raddr); | |
1089 | if (err) | |
1090 | return err; | |
1091 | ||
1092 | return put_user(raddr, addr); | |
1093 | } | |
1094 | ||
1095 | struct sysctl_args32 | |
1096 | { | |
1097 | compat_caddr_t name; | |
1098 | int nlen; | |
1099 | compat_caddr_t oldval; | |
1100 | compat_caddr_t oldlenp; | |
1101 | compat_caddr_t newval; | |
1102 | compat_size_t newlen; | |
1103 | unsigned int __unused[4]; | |
1104 | }; | |
1105 | ||
1106 | #ifdef CONFIG_SYSCTL | |
1107 | ||
1108 | asmlinkage long sys32_sysctl(struct sysctl_args32 *args) | |
1109 | { | |
1110 | struct sysctl_args32 tmp; | |
1111 | int error; | |
1112 | size_t oldlen, *oldlenp = NULL; | |
1113 | unsigned long addr = (((long)&args->__unused[0]) + 7) & ~7; | |
1114 | ||
1115 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
1116 | return -EFAULT; | |
1117 | ||
1118 | if (tmp.oldval && tmp.oldlenp) { | |
1119 | /* Duh, this is ugly and might not work if sysctl_args | |
1120 | is in read-only memory, but do_sysctl does indirectly | |
1121 | a lot of uaccess in both directions and we'd have to | |
1122 | basically copy the whole sysctl.c here, and | |
1123 | glibc's __sysctl uses rw memory for the structure | |
1124 | anyway. */ | |
1125 | if (get_user(oldlen, (u32 *)A(tmp.oldlenp)) || | |
1126 | put_user(oldlen, (size_t *)addr)) | |
1127 | return -EFAULT; | |
1128 | oldlenp = (size_t *)addr; | |
1129 | } | |
1130 | ||
1131 | lock_kernel(); | |
1132 | error = do_sysctl((int *)A(tmp.name), tmp.nlen, (void *)A(tmp.oldval), | |
1133 | oldlenp, (void *)A(tmp.newval), tmp.newlen); | |
1134 | unlock_kernel(); | |
1135 | if (oldlenp) { | |
1136 | if (!error) { | |
1137 | if (get_user(oldlen, (size_t *)addr) || | |
1138 | put_user(oldlen, (u32 *)A(tmp.oldlenp))) | |
1139 | error = -EFAULT; | |
1140 | } | |
1141 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); | |
1142 | } | |
1143 | return error; | |
1144 | } | |
1145 | ||
1146 | #endif /* CONFIG_SYSCTL */ | |
1147 | ||
1148 | asmlinkage long sys32_newuname(struct new_utsname * name) | |
1149 | { | |
1150 | int ret = 0; | |
1151 | ||
1152 | down_read(&uts_sem); | |
1153 | if (copy_to_user(name,&system_utsname,sizeof *name)) | |
1154 | ret = -EFAULT; | |
1155 | up_read(&uts_sem); | |
1156 | ||
1157 | if (current->personality == PER_LINUX32 && !ret) | |
1158 | if (copy_to_user(name->machine, "mips\0\0\0", 8)) | |
1159 | ret = -EFAULT; | |
1160 | ||
1161 | return ret; | |
1162 | } | |
1163 | ||
1164 | asmlinkage int sys32_personality(unsigned long personality) | |
1165 | { | |
1166 | int ret; | |
1167 | if (current->personality == PER_LINUX32 && personality == PER_LINUX) | |
1168 | personality = PER_LINUX32; | |
1169 | ret = sys_personality(personality); | |
1170 | if (ret == PER_LINUX32) | |
1171 | ret = PER_LINUX; | |
1172 | return ret; | |
1173 | } | |
1174 | ||
1175 | /* ustat compatibility */ | |
1176 | struct ustat32 { | |
1177 | compat_daddr_t f_tfree; | |
1178 | compat_ino_t f_tinode; | |
1179 | char f_fname[6]; | |
1180 | char f_fpack[6]; | |
1181 | }; | |
1182 | ||
1183 | extern asmlinkage long sys_ustat(dev_t dev, struct ustat * ubuf); | |
1184 | ||
1185 | asmlinkage int sys32_ustat(dev_t dev, struct ustat32 * ubuf32) | |
1186 | { | |
1187 | int err; | |
1188 | struct ustat tmp; | |
1189 | struct ustat32 tmp32; | |
1190 | mm_segment_t old_fs = get_fs(); | |
1191 | ||
1192 | set_fs(KERNEL_DS); | |
1193 | err = sys_ustat(dev, &tmp); | |
1194 | set_fs (old_fs); | |
1195 | ||
1196 | if (err) | |
1197 | goto out; | |
1198 | ||
1199 | memset(&tmp32,0,sizeof(struct ustat32)); | |
1200 | tmp32.f_tfree = tmp.f_tfree; | |
1201 | tmp32.f_tinode = tmp.f_tinode; | |
1202 | ||
1203 | err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0; | |
1204 | ||
1205 | out: | |
1206 | return err; | |
1207 | } | |
1208 | ||
1209 | /* Handle adjtimex compatibility. */ | |
1210 | ||
1211 | struct timex32 { | |
1212 | u32 modes; | |
1213 | s32 offset, freq, maxerror, esterror; | |
1214 | s32 status, constant, precision, tolerance; | |
1215 | struct compat_timeval time; | |
1216 | s32 tick; | |
1217 | s32 ppsfreq, jitter, shift, stabil; | |
1218 | s32 jitcnt, calcnt, errcnt, stbcnt; | |
1219 | s32 :32; s32 :32; s32 :32; s32 :32; | |
1220 | s32 :32; s32 :32; s32 :32; s32 :32; | |
1221 | s32 :32; s32 :32; s32 :32; s32 :32; | |
1222 | }; | |
1223 | ||
1224 | extern int do_adjtimex(struct timex *); | |
1225 | ||
1226 | asmlinkage int sys32_adjtimex(struct timex32 *utp) | |
1227 | { | |
1228 | struct timex txc; | |
1229 | int ret; | |
1230 | ||
1231 | memset(&txc, 0, sizeof(struct timex)); | |
1232 | ||
1233 | if (get_user(txc.modes, &utp->modes) || | |
1234 | __get_user(txc.offset, &utp->offset) || | |
1235 | __get_user(txc.freq, &utp->freq) || | |
1236 | __get_user(txc.maxerror, &utp->maxerror) || | |
1237 | __get_user(txc.esterror, &utp->esterror) || | |
1238 | __get_user(txc.status, &utp->status) || | |
1239 | __get_user(txc.constant, &utp->constant) || | |
1240 | __get_user(txc.precision, &utp->precision) || | |
1241 | __get_user(txc.tolerance, &utp->tolerance) || | |
1242 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
1243 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
1244 | __get_user(txc.tick, &utp->tick) || | |
1245 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
1246 | __get_user(txc.jitter, &utp->jitter) || | |
1247 | __get_user(txc.shift, &utp->shift) || | |
1248 | __get_user(txc.stabil, &utp->stabil) || | |
1249 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
1250 | __get_user(txc.calcnt, &utp->calcnt) || | |
1251 | __get_user(txc.errcnt, &utp->errcnt) || | |
1252 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
1253 | return -EFAULT; | |
1254 | ||
1255 | ret = do_adjtimex(&txc); | |
1256 | ||
1257 | if (put_user(txc.modes, &utp->modes) || | |
1258 | __put_user(txc.offset, &utp->offset) || | |
1259 | __put_user(txc.freq, &utp->freq) || | |
1260 | __put_user(txc.maxerror, &utp->maxerror) || | |
1261 | __put_user(txc.esterror, &utp->esterror) || | |
1262 | __put_user(txc.status, &utp->status) || | |
1263 | __put_user(txc.constant, &utp->constant) || | |
1264 | __put_user(txc.precision, &utp->precision) || | |
1265 | __put_user(txc.tolerance, &utp->tolerance) || | |
1266 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
1267 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
1268 | __put_user(txc.tick, &utp->tick) || | |
1269 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
1270 | __put_user(txc.jitter, &utp->jitter) || | |
1271 | __put_user(txc.shift, &utp->shift) || | |
1272 | __put_user(txc.stabil, &utp->stabil) || | |
1273 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
1274 | __put_user(txc.calcnt, &utp->calcnt) || | |
1275 | __put_user(txc.errcnt, &utp->errcnt) || | |
1276 | __put_user(txc.stbcnt, &utp->stbcnt)) | |
1277 | ret = -EFAULT; | |
1278 | ||
1279 | return ret; | |
1280 | } | |
1281 | ||
1282 | asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, | |
1283 | s32 count) | |
1284 | { | |
1285 | mm_segment_t old_fs = get_fs(); | |
1286 | int ret; | |
1287 | off_t of; | |
42a3b4f2 | 1288 | |
1da177e4 LT |
1289 | if (offset && get_user(of, offset)) |
1290 | return -EFAULT; | |
42a3b4f2 | 1291 | |
1da177e4 LT |
1292 | set_fs(KERNEL_DS); |
1293 | ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count); | |
1294 | set_fs(old_fs); | |
42a3b4f2 | 1295 | |
1da177e4 LT |
1296 | if (offset && put_user(of, offset)) |
1297 | return -EFAULT; | |
42a3b4f2 | 1298 | |
1da177e4 LT |
1299 | return ret; |
1300 | } | |
1301 | ||
1302 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, | |
1303 | size_t count) | |
1304 | { | |
1305 | return sys_readahead(fd, merge_64(a2, a3), count); | |
1306 | } | |
1307 | ||
1308 | /* Argument list sizes for sys_socketcall */ | |
1309 | #define AL(x) ((x) * sizeof(unsigned int)) | |
1310 | static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), | |
1311 | AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), | |
1312 | AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; | |
1313 | #undef AL | |
1314 | ||
1315 | /* | |
42a3b4f2 | 1316 | * System call vectors. |
1da177e4 LT |
1317 | * |
1318 | * Argument checking cleaned up. Saved 20% in size. | |
1319 | * This function doesn't need to set the kernel lock because | |
42a3b4f2 | 1320 | * it is set by the callees. |
1da177e4 LT |
1321 | */ |
1322 | ||
1323 | asmlinkage long sys32_socketcall(int call, unsigned int *args32) | |
1324 | { | |
1325 | unsigned int a[6]; | |
1326 | unsigned int a0,a1; | |
1327 | int err; | |
1328 | ||
1329 | extern asmlinkage long sys_socket(int family, int type, int protocol); | |
1330 | extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); | |
1331 | extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); | |
1332 | extern asmlinkage long sys_listen(int fd, int backlog); | |
1333 | extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen); | |
1334 | extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
1335 | extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
1336 | extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec); | |
1337 | extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags); | |
1338 | extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, | |
1339 | struct sockaddr __user *addr, int addr_len); | |
1340 | extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags); | |
1341 | extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, | |
1342 | struct sockaddr __user *addr, int __user *addr_len); | |
1343 | extern asmlinkage long sys_shutdown(int fd, int how); | |
1344 | extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); | |
1345 | extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int *optlen); | |
1346 | extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); | |
1347 | extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags); | |
1348 | ||
1349 | ||
1350 | if(call<1||call>SYS_RECVMSG) | |
1351 | return -EINVAL; | |
1352 | ||
1353 | /* copy_from_user should be SMP safe. */ | |
1354 | if (copy_from_user(a, args32, socketcall_nargs[call])) | |
1355 | return -EFAULT; | |
42a3b4f2 | 1356 | |
1da177e4 LT |
1357 | a0=a[0]; |
1358 | a1=a[1]; | |
42a3b4f2 RB |
1359 | |
1360 | switch(call) | |
1da177e4 LT |
1361 | { |
1362 | case SYS_SOCKET: | |
1363 | err = sys_socket(a0,a1,a[2]); | |
1364 | break; | |
1365 | case SYS_BIND: | |
1366 | err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]); | |
1367 | break; | |
1368 | case SYS_CONNECT: | |
1369 | err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]); | |
1370 | break; | |
1371 | case SYS_LISTEN: | |
1372 | err = sys_listen(a0,a1); | |
1373 | break; | |
1374 | case SYS_ACCEPT: | |
1375 | err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1376 | break; | |
1377 | case SYS_GETSOCKNAME: | |
1378 | err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1379 | break; | |
1380 | case SYS_GETPEERNAME: | |
1381 | err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
1382 | break; | |
1383 | case SYS_SOCKETPAIR: | |
1384 | err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3])); | |
1385 | break; | |
1386 | case SYS_SEND: | |
1387 | err = sys_send(a0, (void __user *)A(a1), a[2], a[3]); | |
1388 | break; | |
1389 | case SYS_SENDTO: | |
1390 | err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3], | |
1391 | (struct sockaddr __user *)A(a[4]), a[5]); | |
1392 | break; | |
1393 | case SYS_RECV: | |
1394 | err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]); | |
1395 | break; | |
1396 | case SYS_RECVFROM: | |
1397 | err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3], | |
1398 | (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5])); | |
1399 | break; | |
1400 | case SYS_SHUTDOWN: | |
1401 | err = sys_shutdown(a0,a1); | |
1402 | break; | |
1403 | case SYS_SETSOCKOPT: | |
1404 | err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]); | |
1405 | break; | |
1406 | case SYS_GETSOCKOPT: | |
1407 | err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4])); | |
1408 | break; | |
1409 | case SYS_SENDMSG: | |
1410 | err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
1411 | break; | |
1412 | case SYS_RECVMSG: | |
1413 | err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
1414 | break; | |
1415 | default: | |
1416 | err = -EINVAL; | |
1417 | break; | |
1418 | } | |
1419 | return err; | |
1420 | } | |
d1abb6a2 RB |
1421 | |
1422 | struct sigevent32 { | |
1423 | u32 sigev_value; | |
1424 | u32 sigev_signo; | |
1425 | u32 sigev_notify; | |
1426 | u32 payload[(64 / 4) - 3]; | |
1427 | }; | |
1428 | ||
1429 | extern asmlinkage long | |
1430 | sys_timer_create(clockid_t which_clock, | |
1431 | struct sigevent __user *timer_event_spec, | |
1432 | timer_t __user * created_timer_id); | |
1433 | ||
1434 | long | |
1435 | sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id) | |
1436 | { | |
1437 | struct sigevent __user *p = NULL; | |
1438 | if (se32) { | |
1439 | struct sigevent se; | |
1440 | p = compat_alloc_user_space(sizeof(struct sigevent)); | |
1441 | memset(&se, 0, sizeof(struct sigevent)); | |
1442 | if (get_user(se.sigev_value.sival_int, &se32->sigev_value) || | |
1443 | __get_user(se.sigev_signo, &se32->sigev_signo) || | |
1444 | __get_user(se.sigev_notify, &se32->sigev_notify) || | |
1445 | __copy_from_user(&se._sigev_un._pad, &se32->payload, | |
1446 | sizeof(se32->payload)) || | |
1447 | copy_to_user(p, &se, sizeof(se))) | |
1448 | return -EFAULT; | |
1449 | } | |
1450 | return sys_timer_create(clock, p, timer_id); | |
1451 | } | |
1452 | ||
1453 | asmlinkage long | |
1454 | sysn32_rt_sigtimedwait(const sigset_t __user *uthese, | |
1455 | siginfo_t __user *uinfo, | |
1456 | const struct compat_timespec __user *uts32, | |
1457 | size_t sigsetsize) | |
1458 | { | |
1459 | struct timespec __user *uts = NULL; | |
1460 | ||
1461 | if (uts32) { | |
1462 | struct timespec ts; | |
1463 | uts = compat_alloc_user_space(sizeof(struct timespec)); | |
1464 | if (get_user(ts.tv_sec, &uts32->tv_sec) || | |
1465 | get_user(ts.tv_nsec, &uts32->tv_nsec) || | |
1466 | copy_to_user (uts, &ts, sizeof (ts))) | |
1467 | return -EFAULT; | |
1468 | } | |
1469 | return sys_rt_sigtimedwait(uthese, uinfo, uts, sigsetsize); | |
1470 | } |