Commit | Line | Data |
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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 | */ | |
1da177e4 LT |
8 | #include <linux/compiler.h> |
9 | #include <linux/mm.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/file.h> | |
12 | #include <linux/smp_lock.h> | |
13 | #include <linux/highuid.h> | |
14 | #include <linux/dirent.h> | |
15 | #include <linux/resource.h> | |
16 | #include <linux/highmem.h> | |
17 | #include <linux/time.h> | |
18 | #include <linux/times.h> | |
19 | #include <linux/poll.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/filter.h> | |
23 | #include <linux/shm.h> | |
24 | #include <linux/sem.h> | |
25 | #include <linux/msg.h> | |
26 | #include <linux/icmpv6.h> | |
27 | #include <linux/syscalls.h> | |
28 | #include <linux/sysctl.h> | |
29 | #include <linux/utime.h> | |
30 | #include <linux/utsname.h> | |
31 | #include <linux/personality.h> | |
1da177e4 LT |
32 | #include <linux/dnotify.h> |
33 | #include <linux/module.h> | |
34 | #include <linux/binfmts.h> | |
35 | #include <linux/security.h> | |
36 | #include <linux/compat.h> | |
37 | #include <linux/vfs.h> | |
38 | ||
39 | #include <net/sock.h> | |
40 | #include <net/scm.h> | |
41 | ||
42 | #include <asm/ipc.h> | |
43 | #include <asm/sim.h> | |
44 | #include <asm/uaccess.h> | |
45 | #include <asm/mmu_context.h> | |
46 | #include <asm/mman.h> | |
47 | ||
48 | /* Use this to get at 32-bit user passed pointers. */ | |
49 | /* A() macro should be used for places where you e.g. | |
50 | have some internal variable u32 and just want to get | |
51 | rid of a compiler warning. AA() has to be used in | |
52 | places where you want to convert a function argument | |
53 | to 32bit pointer or when you e.g. access pt_regs | |
54 | structure and want to consider 32bit registers only. | |
55 | */ | |
56 | #define A(__x) ((unsigned long)(__x)) | |
57 | #define AA(__x) ((unsigned long)((int)__x)) | |
58 | ||
59 | #ifdef __MIPSEB__ | |
60 | #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) | |
61 | #endif | |
62 | #ifdef __MIPSEL__ | |
63 | #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) | |
64 | #endif | |
65 | ||
66 | /* | |
67 | * Revalidate the inode. This is required for proper NFS attribute caching. | |
68 | */ | |
69 | ||
219ac73a | 70 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) |
1da177e4 LT |
71 | { |
72 | struct compat_stat tmp; | |
73 | ||
74 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
75 | return -EOVERFLOW; | |
76 | ||
77 | memset(&tmp, 0, sizeof(tmp)); | |
78 | tmp.st_dev = new_encode_dev(stat->dev); | |
79 | tmp.st_ino = stat->ino; | |
afefdbb2 DH |
80 | if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) |
81 | return -EOVERFLOW; | |
1da177e4 LT |
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; | |
947df17c PA |
109 | if (pgoff & (~PAGE_MASK >> 12)) |
110 | goto out; | |
111 | pgoff >>= PAGE_SHIFT-12; | |
112 | ||
1da177e4 LT |
113 | if (!(flags & MAP_ANONYMOUS)) { |
114 | error = -EBADF; | |
115 | file = fget(fd); | |
116 | if (!file) | |
117 | goto out; | |
118 | } | |
119 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
120 | ||
121 | down_write(¤t->mm->mmap_sem); | |
122 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); | |
123 | up_write(¤t->mm->mmap_sem); | |
124 | if (file) | |
125 | fput(file); | |
126 | ||
127 | out: | |
128 | return error; | |
129 | } | |
130 | ||
131 | ||
219ac73a | 132 | asmlinkage int sys_truncate64(const char __user *path, unsigned int high, |
1da177e4 LT |
133 | unsigned int low) |
134 | { | |
135 | if ((int)high < 0) | |
136 | return -EINVAL; | |
137 | return sys_truncate(path, ((long) high << 32) | low); | |
138 | } | |
139 | ||
140 | asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, | |
141 | unsigned int low) | |
142 | { | |
143 | if ((int)high < 0) | |
144 | return -EINVAL; | |
145 | return sys_ftruncate(fd, ((long) high << 32) | low); | |
146 | } | |
147 | ||
148 | /* | |
149 | * sys_execve() executes a new program. | |
150 | */ | |
151 | asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) | |
152 | { | |
153 | int error; | |
154 | char * filename; | |
155 | ||
156 | filename = getname(compat_ptr(regs.regs[4])); | |
157 | error = PTR_ERR(filename); | |
158 | if (IS_ERR(filename)) | |
159 | goto out; | |
160 | error = compat_do_execve(filename, compat_ptr(regs.regs[5]), | |
161 | compat_ptr(regs.regs[6]), ®s); | |
162 | putname(filename); | |
163 | ||
164 | out: | |
165 | return error; | |
166 | } | |
167 | ||
54f2da75 RB |
168 | asmlinkage long |
169 | sysn32_waitid(int which, compat_pid_t pid, | |
170 | siginfo_t __user *uinfo, int options, | |
171 | struct compat_rusage __user *uru) | |
172 | { | |
173 | struct rusage ru; | |
174 | long ret; | |
175 | mm_segment_t old_fs = get_fs(); | |
219ac73a | 176 | int si_signo; |
54f2da75 | 177 | |
f3468e0c RB |
178 | if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo))) |
179 | return -EFAULT; | |
180 | ||
54f2da75 RB |
181 | set_fs (KERNEL_DS); |
182 | ret = sys_waitid(which, pid, uinfo, options, | |
183 | uru ? (struct rusage __user *) &ru : NULL); | |
184 | set_fs (old_fs); | |
185 | ||
219ac73a AN |
186 | if (__get_user(si_signo, &uinfo->si_signo)) |
187 | return -EFAULT; | |
188 | if (ret < 0 || si_signo == 0) | |
54f2da75 RB |
189 | return ret; |
190 | ||
191 | if (uru) | |
192 | ret = put_compat_rusage(&ru, uru); | |
193 | return ret; | |
194 | } | |
195 | ||
1da177e4 LT |
196 | struct sysinfo32 { |
197 | s32 uptime; | |
198 | u32 loads[3]; | |
199 | u32 totalram; | |
200 | u32 freeram; | |
201 | u32 sharedram; | |
202 | u32 bufferram; | |
203 | u32 totalswap; | |
204 | u32 freeswap; | |
205 | u16 procs; | |
206 | u32 totalhigh; | |
207 | u32 freehigh; | |
208 | u32 mem_unit; | |
209 | char _f[8]; | |
210 | }; | |
211 | ||
219ac73a | 212 | asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info) |
1da177e4 LT |
213 | { |
214 | struct sysinfo s; | |
215 | int ret, err; | |
216 | mm_segment_t old_fs = get_fs (); | |
42a3b4f2 | 217 | |
1da177e4 | 218 | set_fs (KERNEL_DS); |
219ac73a | 219 | ret = sys_sysinfo((struct sysinfo __user *)&s); |
1da177e4 LT |
220 | set_fs (old_fs); |
221 | err = put_user (s.uptime, &info->uptime); | |
222 | err |= __put_user (s.loads[0], &info->loads[0]); | |
223 | err |= __put_user (s.loads[1], &info->loads[1]); | |
224 | err |= __put_user (s.loads[2], &info->loads[2]); | |
225 | err |= __put_user (s.totalram, &info->totalram); | |
226 | err |= __put_user (s.freeram, &info->freeram); | |
227 | err |= __put_user (s.sharedram, &info->sharedram); | |
228 | err |= __put_user (s.bufferram, &info->bufferram); | |
229 | err |= __put_user (s.totalswap, &info->totalswap); | |
230 | err |= __put_user (s.freeswap, &info->freeswap); | |
231 | err |= __put_user (s.procs, &info->procs); | |
232 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
233 | err |= __put_user (s.freehigh, &info->freehigh); | |
234 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
235 | if (err) | |
236 | return -EFAULT; | |
237 | return ret; | |
238 | } | |
239 | ||
240 | #define RLIM_INFINITY32 0x7fffffff | |
241 | #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) | |
242 | ||
243 | struct rlimit32 { | |
244 | int rlim_cur; | |
245 | int rlim_max; | |
246 | }; | |
247 | ||
248 | #ifdef __MIPSEB__ | |
219ac73a | 249 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, |
1da177e4 LT |
250 | int length_hi, int length_lo) |
251 | #endif | |
252 | #ifdef __MIPSEL__ | |
219ac73a | 253 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, |
1da177e4 LT |
254 | int length_lo, int length_hi) |
255 | #endif | |
256 | { | |
257 | loff_t length; | |
258 | ||
259 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
260 | ||
261 | return sys_truncate(path, length); | |
262 | } | |
263 | ||
264 | #ifdef __MIPSEB__ | |
265 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
266 | int length_hi, int length_lo) | |
267 | #endif | |
268 | #ifdef __MIPSEL__ | |
269 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, | |
270 | int length_lo, int length_hi) | |
271 | #endif | |
272 | { | |
273 | loff_t length; | |
274 | ||
275 | length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; | |
276 | ||
277 | return sys_ftruncate(fd, length); | |
278 | } | |
279 | ||
280 | static inline long | |
219ac73a | 281 | get_tv32(struct timeval *o, struct compat_timeval __user *i) |
1da177e4 LT |
282 | { |
283 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
284 | (__get_user(o->tv_sec, &i->tv_sec) | | |
285 | __get_user(o->tv_usec, &i->tv_usec))); | |
286 | } | |
287 | ||
288 | static inline long | |
219ac73a | 289 | put_tv32(struct compat_timeval __user *o, struct timeval *i) |
1da177e4 LT |
290 | { |
291 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
292 | (__put_user(i->tv_sec, &o->tv_sec) | | |
293 | __put_user(i->tv_usec, &o->tv_usec))); | |
294 | } | |
295 | ||
296 | extern struct timezone sys_tz; | |
297 | ||
298 | asmlinkage int | |
219ac73a | 299 | sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
1da177e4 LT |
300 | { |
301 | if (tv) { | |
302 | struct timeval ktv; | |
303 | do_gettimeofday(&ktv); | |
304 | if (put_tv32(tv, &ktv)) | |
305 | return -EFAULT; | |
306 | } | |
307 | if (tz) { | |
308 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
309 | return -EFAULT; | |
310 | } | |
311 | return 0; | |
312 | } | |
313 | ||
219ac73a | 314 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) |
1da177e4 LT |
315 | { |
316 | long usec; | |
317 | ||
318 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
319 | return -EFAULT; | |
320 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
321 | return -EFAULT; | |
322 | if (__get_user(usec, &i->tv_usec)) | |
323 | return -EFAULT; | |
324 | o->tv_nsec = usec * 1000; | |
325 | return 0; | |
326 | } | |
327 | ||
328 | asmlinkage int | |
219ac73a | 329 | sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
1da177e4 LT |
330 | { |
331 | struct timespec kts; | |
332 | struct timezone ktz; | |
333 | ||
334 | if (tv) { | |
335 | if (get_ts32(&kts, tv)) | |
336 | return -EFAULT; | |
337 | } | |
338 | if (tz) { | |
339 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
340 | return -EFAULT; | |
341 | } | |
342 | ||
343 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
344 | } | |
345 | ||
346 | asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, | |
219ac73a | 347 | unsigned int offset_low, loff_t __user * result, |
1da177e4 LT |
348 | unsigned int origin) |
349 | { | |
350 | return sys_llseek(fd, offset_high, offset_low, result, origin); | |
351 | } | |
352 | ||
353 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + | |
354 | lseek back to original location. They fail just like lseek does on | |
355 | non-seekable files. */ | |
356 | ||
219ac73a | 357 | asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf, |
1da177e4 LT |
358 | size_t count, u32 unused, u64 a4, u64 a5) |
359 | { | |
6ad0013b | 360 | return sys_pread64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
361 | } |
362 | ||
219ac73a | 363 | asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf, |
1da177e4 LT |
364 | size_t count, u32 unused, u64 a4, u64 a5) |
365 | { | |
6ad0013b | 366 | return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
367 | } |
368 | ||
369 | asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, | |
219ac73a | 370 | struct compat_timespec __user *interval) |
1da177e4 LT |
371 | { |
372 | struct timespec t; | |
373 | int ret; | |
374 | mm_segment_t old_fs = get_fs (); | |
375 | ||
376 | set_fs (KERNEL_DS); | |
219ac73a | 377 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
1da177e4 LT |
378 | set_fs (old_fs); |
379 | if (put_user (t.tv_sec, &interval->tv_sec) || | |
380 | __put_user (t.tv_nsec, &interval->tv_nsec)) | |
381 | return -EFAULT; | |
382 | return ret; | |
383 | } | |
384 | ||
1da177e4 LT |
385 | asmlinkage long |
386 | sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) | |
387 | { | |
388 | int version, err; | |
389 | ||
390 | version = call >> 16; /* hack for backward compatibility */ | |
391 | call &= 0xffff; | |
392 | ||
393 | switch (call) { | |
394 | case SEMOP: | |
395 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
05e43966 | 396 | err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); |
1da177e4 LT |
397 | break; |
398 | case SEMTIMEDOP: | |
05e43966 AN |
399 | err = compat_sys_semtimedop(first, compat_ptr(ptr), second, |
400 | compat_ptr(fifth)); | |
1da177e4 LT |
401 | break; |
402 | case SEMGET: | |
05e43966 | 403 | err = sys_semget(first, second, third); |
1da177e4 LT |
404 | break; |
405 | case SEMCTL: | |
05e43966 | 406 | err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); |
1da177e4 | 407 | break; |
1da177e4 | 408 | case MSGSND: |
05e43966 | 409 | err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); |
1da177e4 LT |
410 | break; |
411 | case MSGRCV: | |
05e43966 AN |
412 | err = compat_sys_msgrcv(first, second, fifth, third, |
413 | version, compat_ptr(ptr)); | |
1da177e4 LT |
414 | break; |
415 | case MSGGET: | |
05e43966 | 416 | err = sys_msgget((key_t) first, second); |
1da177e4 LT |
417 | break; |
418 | case MSGCTL: | |
05e43966 | 419 | err = compat_sys_msgctl(first, second, compat_ptr(ptr)); |
1da177e4 | 420 | break; |
1da177e4 | 421 | case SHMAT: |
05e43966 AN |
422 | err = compat_sys_shmat(first, second, third, version, |
423 | compat_ptr(ptr)); | |
1da177e4 LT |
424 | break; |
425 | case SHMDT: | |
05e43966 | 426 | err = sys_shmdt(compat_ptr(ptr)); |
1da177e4 LT |
427 | break; |
428 | case SHMGET: | |
05e43966 | 429 | err = sys_shmget(first, (unsigned)second, third); |
1da177e4 LT |
430 | break; |
431 | case SHMCTL: | |
05e43966 | 432 | err = compat_sys_shmctl(first, second, compat_ptr(ptr)); |
1da177e4 LT |
433 | break; |
434 | default: | |
435 | err = -EINVAL; | |
436 | break; | |
437 | } | |
438 | ||
439 | return err; | |
440 | } | |
441 | ||
05e43966 AN |
442 | #ifdef CONFIG_MIPS32_N32 |
443 | asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg) | |
1da177e4 | 444 | { |
05e43966 AN |
445 | /* compat_sys_semctl expects a pointer to union semun */ |
446 | u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); | |
447 | if (put_user(ptr_to_compat(arg.__pad), uptr)) | |
448 | return -EFAULT; | |
449 | return compat_sys_semctl(semid, semnum, cmd, uptr); | |
1da177e4 | 450 | } |
05e43966 | 451 | #endif |
1da177e4 LT |
452 | |
453 | struct sysctl_args32 | |
454 | { | |
455 | compat_caddr_t name; | |
456 | int nlen; | |
457 | compat_caddr_t oldval; | |
458 | compat_caddr_t oldlenp; | |
459 | compat_caddr_t newval; | |
460 | compat_size_t newlen; | |
461 | unsigned int __unused[4]; | |
462 | }; | |
463 | ||
b89a8171 | 464 | #ifdef CONFIG_SYSCTL_SYSCALL |
1da177e4 | 465 | |
219ac73a | 466 | asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) |
1da177e4 LT |
467 | { |
468 | struct sysctl_args32 tmp; | |
469 | int error; | |
219ac73a AN |
470 | size_t oldlen; |
471 | size_t __user *oldlenp = NULL; | |
472 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; | |
1da177e4 LT |
473 | |
474 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
475 | return -EFAULT; | |
476 | ||
477 | if (tmp.oldval && tmp.oldlenp) { | |
478 | /* Duh, this is ugly and might not work if sysctl_args | |
479 | is in read-only memory, but do_sysctl does indirectly | |
480 | a lot of uaccess in both directions and we'd have to | |
481 | basically copy the whole sysctl.c here, and | |
482 | glibc's __sysctl uses rw memory for the structure | |
483 | anyway. */ | |
219ac73a AN |
484 | if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || |
485 | put_user(oldlen, (size_t __user *)addr)) | |
1da177e4 | 486 | return -EFAULT; |
219ac73a | 487 | oldlenp = (size_t __user *)addr; |
1da177e4 LT |
488 | } |
489 | ||
490 | lock_kernel(); | |
219ac73a AN |
491 | error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), |
492 | oldlenp, (void __user *)A(tmp.newval), tmp.newlen); | |
1da177e4 LT |
493 | unlock_kernel(); |
494 | if (oldlenp) { | |
495 | if (!error) { | |
219ac73a AN |
496 | if (get_user(oldlen, (size_t __user *)addr) || |
497 | put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) | |
1da177e4 LT |
498 | error = -EFAULT; |
499 | } | |
500 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); | |
501 | } | |
502 | return error; | |
503 | } | |
504 | ||
b89a8171 | 505 | #endif /* CONFIG_SYSCTL_SYSCALL */ |
1da177e4 | 506 | |
219ac73a | 507 | asmlinkage long sys32_newuname(struct new_utsname __user * name) |
1da177e4 LT |
508 | { |
509 | int ret = 0; | |
510 | ||
511 | down_read(&uts_sem); | |
e9ff3990 | 512 | if (copy_to_user(name, utsname(), sizeof *name)) |
1da177e4 LT |
513 | ret = -EFAULT; |
514 | up_read(&uts_sem); | |
515 | ||
516 | if (current->personality == PER_LINUX32 && !ret) | |
517 | if (copy_to_user(name->machine, "mips\0\0\0", 8)) | |
518 | ret = -EFAULT; | |
519 | ||
520 | return ret; | |
521 | } | |
522 | ||
523 | asmlinkage int sys32_personality(unsigned long personality) | |
524 | { | |
525 | int ret; | |
53571ce4 TS |
526 | personality &= 0xffffffff; |
527 | if (personality(current->personality) == PER_LINUX32 && | |
528 | personality == PER_LINUX) | |
1da177e4 LT |
529 | personality = PER_LINUX32; |
530 | ret = sys_personality(personality); | |
531 | if (ret == PER_LINUX32) | |
532 | ret = PER_LINUX; | |
533 | return ret; | |
534 | } | |
535 | ||
536 | /* ustat compatibility */ | |
537 | struct ustat32 { | |
538 | compat_daddr_t f_tfree; | |
539 | compat_ino_t f_tinode; | |
540 | char f_fname[6]; | |
541 | char f_fpack[6]; | |
542 | }; | |
543 | ||
219ac73a | 544 | extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf); |
1da177e4 | 545 | |
219ac73a | 546 | asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32) |
1da177e4 LT |
547 | { |
548 | int err; | |
549 | struct ustat tmp; | |
550 | struct ustat32 tmp32; | |
551 | mm_segment_t old_fs = get_fs(); | |
552 | ||
553 | set_fs(KERNEL_DS); | |
219ac73a | 554 | err = sys_ustat(dev, (struct ustat __user *)&tmp); |
1da177e4 LT |
555 | set_fs (old_fs); |
556 | ||
557 | if (err) | |
558 | goto out; | |
559 | ||
560 | memset(&tmp32,0,sizeof(struct ustat32)); | |
561 | tmp32.f_tfree = tmp.f_tfree; | |
562 | tmp32.f_tinode = tmp.f_tinode; | |
563 | ||
564 | err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0; | |
565 | ||
566 | out: | |
567 | return err; | |
568 | } | |
569 | ||
219ac73a | 570 | asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, |
1da177e4 LT |
571 | s32 count) |
572 | { | |
573 | mm_segment_t old_fs = get_fs(); | |
574 | int ret; | |
575 | off_t of; | |
42a3b4f2 | 576 | |
1da177e4 LT |
577 | if (offset && get_user(of, offset)) |
578 | return -EFAULT; | |
42a3b4f2 | 579 | |
1da177e4 | 580 | set_fs(KERNEL_DS); |
219ac73a | 581 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); |
1da177e4 | 582 | set_fs(old_fs); |
42a3b4f2 | 583 | |
1da177e4 LT |
584 | if (offset && put_user(of, offset)) |
585 | return -EFAULT; | |
42a3b4f2 | 586 | |
1da177e4 LT |
587 | return ret; |
588 | } | |
589 | ||
590 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, | |
591 | size_t count) | |
592 | { | |
593 | return sys_readahead(fd, merge_64(a2, a3), count); | |
594 | } | |
595 | ||
a8d587a7 RB |
596 | asmlinkage long sys32_sync_file_range(int fd, int __pad, |
597 | unsigned long a2, unsigned long a3, | |
598 | unsigned long a4, unsigned long a5, | |
599 | int flags) | |
600 | { | |
601 | return sys_sync_file_range(fd, | |
602 | merge_64(a2, a3), merge_64(a4, a5), | |
603 | flags); | |
604 | } | |
605 | ||
1da177e4 LT |
606 | /* Argument list sizes for sys_socketcall */ |
607 | #define AL(x) ((x) * sizeof(unsigned int)) | |
608 | static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), | |
609 | AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), | |
610 | AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; | |
611 | #undef AL | |
612 | ||
613 | /* | |
42a3b4f2 | 614 | * System call vectors. |
1da177e4 LT |
615 | * |
616 | * Argument checking cleaned up. Saved 20% in size. | |
617 | * This function doesn't need to set the kernel lock because | |
42a3b4f2 | 618 | * it is set by the callees. |
1da177e4 LT |
619 | */ |
620 | ||
219ac73a | 621 | asmlinkage long sys32_socketcall(int call, unsigned int __user *args32) |
1da177e4 LT |
622 | { |
623 | unsigned int a[6]; | |
624 | unsigned int a0,a1; | |
625 | int err; | |
626 | ||
627 | extern asmlinkage long sys_socket(int family, int type, int protocol); | |
628 | extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); | |
629 | extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen); | |
630 | extern asmlinkage long sys_listen(int fd, int backlog); | |
631 | extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen); | |
632 | extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
633 | extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len); | |
634 | extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec); | |
635 | extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags); | |
636 | extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, | |
637 | struct sockaddr __user *addr, int addr_len); | |
638 | extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags); | |
639 | extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, | |
640 | struct sockaddr __user *addr, int __user *addr_len); | |
641 | extern asmlinkage long sys_shutdown(int fd, int how); | |
642 | extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); | |
219ac73a | 643 | extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen); |
1da177e4 LT |
644 | extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags); |
645 | extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags); | |
646 | ||
647 | ||
648 | if(call<1||call>SYS_RECVMSG) | |
649 | return -EINVAL; | |
650 | ||
651 | /* copy_from_user should be SMP safe. */ | |
652 | if (copy_from_user(a, args32, socketcall_nargs[call])) | |
653 | return -EFAULT; | |
42a3b4f2 | 654 | |
1da177e4 LT |
655 | a0=a[0]; |
656 | a1=a[1]; | |
42a3b4f2 RB |
657 | |
658 | switch(call) | |
1da177e4 LT |
659 | { |
660 | case SYS_SOCKET: | |
661 | err = sys_socket(a0,a1,a[2]); | |
662 | break; | |
663 | case SYS_BIND: | |
664 | err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]); | |
665 | break; | |
666 | case SYS_CONNECT: | |
667 | err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]); | |
668 | break; | |
669 | case SYS_LISTEN: | |
670 | err = sys_listen(a0,a1); | |
671 | break; | |
672 | case SYS_ACCEPT: | |
673 | err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
674 | break; | |
675 | case SYS_GETSOCKNAME: | |
676 | err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
677 | break; | |
678 | case SYS_GETPEERNAME: | |
679 | err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2])); | |
680 | break; | |
681 | case SYS_SOCKETPAIR: | |
682 | err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3])); | |
683 | break; | |
684 | case SYS_SEND: | |
685 | err = sys_send(a0, (void __user *)A(a1), a[2], a[3]); | |
686 | break; | |
687 | case SYS_SENDTO: | |
688 | err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3], | |
689 | (struct sockaddr __user *)A(a[4]), a[5]); | |
690 | break; | |
691 | case SYS_RECV: | |
692 | err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]); | |
693 | break; | |
694 | case SYS_RECVFROM: | |
695 | err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3], | |
696 | (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5])); | |
697 | break; | |
698 | case SYS_SHUTDOWN: | |
699 | err = sys_shutdown(a0,a1); | |
700 | break; | |
701 | case SYS_SETSOCKOPT: | |
702 | err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]); | |
703 | break; | |
704 | case SYS_GETSOCKOPT: | |
705 | err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4])); | |
706 | break; | |
707 | case SYS_SENDMSG: | |
708 | err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
709 | break; | |
710 | case SYS_RECVMSG: | |
711 | err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]); | |
712 | break; | |
713 | default: | |
714 | err = -EINVAL; | |
715 | break; | |
716 | } | |
717 | return err; | |
718 | } | |
d1abb6a2 RB |
719 | |
720 | struct sigevent32 { | |
721 | u32 sigev_value; | |
722 | u32 sigev_signo; | |
723 | u32 sigev_notify; | |
724 | u32 payload[(64 / 4) - 3]; | |
725 | }; | |
726 | ||
727 | extern asmlinkage long | |
728 | sys_timer_create(clockid_t which_clock, | |
729 | struct sigevent __user *timer_event_spec, | |
730 | timer_t __user * created_timer_id); | |
731 | ||
732 | long | |
733 | sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id) | |
734 | { | |
735 | struct sigevent __user *p = NULL; | |
736 | if (se32) { | |
737 | struct sigevent se; | |
738 | p = compat_alloc_user_space(sizeof(struct sigevent)); | |
739 | memset(&se, 0, sizeof(struct sigevent)); | |
740 | if (get_user(se.sigev_value.sival_int, &se32->sigev_value) || | |
741 | __get_user(se.sigev_signo, &se32->sigev_signo) || | |
742 | __get_user(se.sigev_notify, &se32->sigev_notify) || | |
743 | __copy_from_user(&se._sigev_un._pad, &se32->payload, | |
744 | sizeof(se32->payload)) || | |
745 | copy_to_user(p, &se, sizeof(se))) | |
746 | return -EFAULT; | |
747 | } | |
748 | return sys_timer_create(clock, p, timer_id); | |
749 | } | |
750 | ||
3c37026d RB |
751 | save_static_function(sys32_clone); |
752 | __attribute_used__ noinline static int | |
753 | _sys32_clone(nabi_no_regargs struct pt_regs regs) | |
754 | { | |
755 | unsigned long clone_flags; | |
756 | unsigned long newsp; | |
757 | int __user *parent_tidptr, *child_tidptr; | |
758 | ||
759 | clone_flags = regs.regs[4]; | |
760 | newsp = regs.regs[5]; | |
761 | if (!newsp) | |
762 | newsp = regs.regs[29]; | |
219ac73a | 763 | parent_tidptr = (int __user *) regs.regs[6]; |
3c37026d RB |
764 | |
765 | /* Use __dummy4 instead of getting it off the stack, so that | |
766 | syscall() works. */ | |
767 | child_tidptr = (int __user *) __dummy4; | |
768 | return do_fork(clone_flags, newsp, ®s, 0, | |
769 | parent_tidptr, child_tidptr); | |
770 | } |