Commit | Line | Data |
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bc5a2e64 | 1 | /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. |
1da177e4 LT |
2 | * |
3 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
bc5a2e64 | 4 | * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
5 | * |
6 | * These routines maintain argument size conversion between 32bit and 64bit | |
7 | * environment. | |
8 | */ | |
9 | ||
1da177e4 LT |
10 | #include <linux/kernel.h> |
11 | #include <linux/sched.h> | |
a9415644 | 12 | #include <linux/capability.h> |
1da177e4 LT |
13 | #include <linux/fs.h> |
14 | #include <linux/mm.h> | |
15 | #include <linux/file.h> | |
16 | #include <linux/signal.h> | |
17 | #include <linux/resource.h> | |
18 | #include <linux/times.h> | |
1da177e4 LT |
19 | #include <linux/smp.h> |
20 | #include <linux/smp_lock.h> | |
21 | #include <linux/sem.h> | |
22 | #include <linux/msg.h> | |
23 | #include <linux/shm.h> | |
1da177e4 LT |
24 | #include <linux/uio.h> |
25 | #include <linux/nfs_fs.h> | |
26 | #include <linux/quota.h> | |
27 | #include <linux/module.h> | |
1da177e4 LT |
28 | #include <linux/poll.h> |
29 | #include <linux/personality.h> | |
30 | #include <linux/stat.h> | |
31 | #include <linux/filter.h> | |
32 | #include <linux/highmem.h> | |
33 | #include <linux/highuid.h> | |
34 | #include <linux/mman.h> | |
35 | #include <linux/ipv6.h> | |
36 | #include <linux/in.h> | |
37 | #include <linux/icmpv6.h> | |
38 | #include <linux/syscalls.h> | |
39 | #include <linux/sysctl.h> | |
40 | #include <linux/binfmts.h> | |
41 | #include <linux/dnotify.h> | |
42 | #include <linux/security.h> | |
43 | #include <linux/compat.h> | |
44 | #include <linux/vfs.h> | |
1da177e4 | 45 | #include <linux/ptrace.h> |
5a0e3ad6 | 46 | #include <linux/slab.h> |
1da177e4 LT |
47 | |
48 | #include <asm/types.h> | |
1da177e4 LT |
49 | #include <asm/uaccess.h> |
50 | #include <asm/fpumacro.h> | |
1da177e4 | 51 | #include <asm/mmu_context.h> |
14cc6aba | 52 | #include <asm/compat_signal.h> |
1da177e4 | 53 | |
1da177e4 LT |
54 | #ifdef CONFIG_SYSVIPC |
55 | asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth) | |
56 | { | |
57 | int version; | |
58 | ||
59 | version = call >> 16; /* hack for backward compatibility */ | |
60 | call &= 0xffff; | |
61 | ||
62 | switch (call) { | |
63 | case SEMTIMEDOP: | |
64 | if (fifth) | |
65 | /* sign extend semid */ | |
66 | return compat_sys_semtimedop((int)first, | |
67 | compat_ptr(ptr), second, | |
68 | compat_ptr(fifth)); | |
69 | /* else fall through for normal semop() */ | |
70 | case SEMOP: | |
71 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
72 | /* sign extend semid */ | |
73 | return sys_semtimedop((int)first, compat_ptr(ptr), second, | |
74 | NULL); | |
75 | case SEMGET: | |
76 | /* sign extend key, nsems */ | |
77 | return sys_semget((int)first, (int)second, third); | |
78 | case SEMCTL: | |
79 | /* sign extend semid, semnum */ | |
80 | return compat_sys_semctl((int)first, (int)second, third, | |
81 | compat_ptr(ptr)); | |
82 | ||
83 | case MSGSND: | |
84 | /* sign extend msqid */ | |
85 | return compat_sys_msgsnd((int)first, (int)second, third, | |
86 | compat_ptr(ptr)); | |
87 | case MSGRCV: | |
88 | /* sign extend msqid, msgtyp */ | |
89 | return compat_sys_msgrcv((int)first, second, (int)fifth, | |
90 | third, version, compat_ptr(ptr)); | |
91 | case MSGGET: | |
92 | /* sign extend key */ | |
93 | return sys_msgget((int)first, second); | |
94 | case MSGCTL: | |
95 | /* sign extend msqid */ | |
96 | return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); | |
97 | ||
98 | case SHMAT: | |
99 | /* sign extend shmid */ | |
100 | return compat_sys_shmat((int)first, second, third, version, | |
101 | compat_ptr(ptr)); | |
102 | case SHMDT: | |
103 | return sys_shmdt(compat_ptr(ptr)); | |
104 | case SHMGET: | |
105 | /* sign extend key_t */ | |
106 | return sys_shmget((int)first, second, third); | |
107 | case SHMCTL: | |
108 | /* sign extend shmid */ | |
109 | return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); | |
110 | ||
111 | default: | |
112 | return -ENOSYS; | |
113 | }; | |
114 | ||
115 | return -ENOSYS; | |
116 | } | |
117 | #endif | |
118 | ||
119 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) | |
120 | { | |
121 | if ((int)high < 0) | |
122 | return -EINVAL; | |
123 | else | |
124 | return sys_truncate(path, (high << 32) | low); | |
125 | } | |
126 | ||
127 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) | |
128 | { | |
129 | if ((int)high < 0) | |
130 | return -EINVAL; | |
131 | else | |
132 | return sys_ftruncate(fd, (high << 32) | low); | |
133 | } | |
134 | ||
908f5162 AB |
135 | static int cp_compat_stat64(struct kstat *stat, |
136 | struct compat_stat64 __user *statbuf) | |
0ba4da03 DM |
137 | { |
138 | int err; | |
139 | ||
140 | err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); | |
141 | err |= put_user(stat->ino, &statbuf->st_ino); | |
142 | err |= put_user(stat->mode, &statbuf->st_mode); | |
143 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
144 | err |= put_user(stat->uid, &statbuf->st_uid); | |
145 | err |= put_user(stat->gid, &statbuf->st_gid); | |
146 | err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); | |
147 | err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); | |
148 | err |= put_user(stat->size, &statbuf->st_size); | |
149 | err |= put_user(stat->blksize, &statbuf->st_blksize); | |
150 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); | |
151 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); | |
152 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
153 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
154 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); | |
155 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); | |
156 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); | |
157 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); | |
158 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); | |
159 | err |= put_user(0, &statbuf->__unused4); | |
160 | err |= put_user(0, &statbuf->__unused5); | |
161 | ||
162 | return err; | |
163 | } | |
164 | ||
c7887325 | 165 | asmlinkage long compat_sys_stat64(const char __user * filename, |
0ba4da03 DM |
166 | struct compat_stat64 __user *statbuf) |
167 | { | |
168 | struct kstat stat; | |
169 | int error = vfs_stat(filename, &stat); | |
170 | ||
171 | if (!error) | |
172 | error = cp_compat_stat64(&stat, statbuf); | |
173 | return error; | |
174 | } | |
175 | ||
c7887325 | 176 | asmlinkage long compat_sys_lstat64(const char __user * filename, |
0ba4da03 DM |
177 | struct compat_stat64 __user *statbuf) |
178 | { | |
179 | struct kstat stat; | |
180 | int error = vfs_lstat(filename, &stat); | |
181 | ||
182 | if (!error) | |
183 | error = cp_compat_stat64(&stat, statbuf); | |
184 | return error; | |
185 | } | |
186 | ||
187 | asmlinkage long compat_sys_fstat64(unsigned int fd, | |
188 | struct compat_stat64 __user * statbuf) | |
189 | { | |
190 | struct kstat stat; | |
191 | int error = vfs_fstat(fd, &stat); | |
192 | ||
193 | if (!error) | |
194 | error = cp_compat_stat64(&stat, statbuf); | |
195 | return error; | |
196 | } | |
197 | ||
c7887325 DH |
198 | asmlinkage long compat_sys_fstatat64(unsigned int dfd, |
199 | const char __user *filename, | |
40ad7a6a DM |
200 | struct compat_stat64 __user * statbuf, int flag) |
201 | { | |
202 | struct kstat stat; | |
0112fc22 | 203 | int error; |
40ad7a6a | 204 | |
0112fc22 OD |
205 | error = vfs_fstatat(dfd, filename, &stat, flag); |
206 | if (error) | |
207 | return error; | |
208 | return cp_compat_stat64(&stat, statbuf); | |
40ad7a6a DM |
209 | } |
210 | ||
1da177e4 LT |
211 | asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) |
212 | { | |
213 | return sys_sysfs(option, arg1, arg2); | |
214 | } | |
215 | ||
1da177e4 LT |
216 | asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) |
217 | { | |
218 | struct timespec t; | |
219 | int ret; | |
220 | mm_segment_t old_fs = get_fs (); | |
221 | ||
222 | set_fs (KERNEL_DS); | |
223 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t); | |
224 | set_fs (old_fs); | |
225 | if (put_compat_timespec(&t, interval)) | |
226 | return -EFAULT; | |
227 | return ret; | |
228 | } | |
229 | ||
230 | asmlinkage long compat_sys_rt_sigprocmask(int how, | |
231 | compat_sigset_t __user *set, | |
232 | compat_sigset_t __user *oset, | |
233 | compat_size_t sigsetsize) | |
234 | { | |
235 | sigset_t s; | |
236 | compat_sigset_t s32; | |
237 | int ret; | |
238 | mm_segment_t old_fs = get_fs(); | |
239 | ||
240 | if (set) { | |
241 | if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) | |
242 | return -EFAULT; | |
243 | switch (_NSIG_WORDS) { | |
244 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); | |
245 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); | |
246 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); | |
247 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); | |
248 | } | |
249 | } | |
250 | set_fs (KERNEL_DS); | |
251 | ret = sys_rt_sigprocmask(how, | |
252 | set ? (sigset_t __user *) &s : NULL, | |
253 | oset ? (sigset_t __user *) &s : NULL, | |
254 | sigsetsize); | |
255 | set_fs (old_fs); | |
256 | if (ret) return ret; | |
257 | if (oset) { | |
258 | switch (_NSIG_WORDS) { | |
259 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
260 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
261 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
262 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
263 | } | |
264 | if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) | |
265 | return -EFAULT; | |
266 | } | |
267 | return 0; | |
268 | } | |
269 | ||
270 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, | |
271 | compat_size_t sigsetsize) | |
272 | { | |
273 | sigset_t s; | |
274 | compat_sigset_t s32; | |
275 | int ret; | |
276 | mm_segment_t old_fs = get_fs(); | |
277 | ||
278 | set_fs (KERNEL_DS); | |
279 | ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); | |
280 | set_fs (old_fs); | |
281 | if (!ret) { | |
282 | switch (_NSIG_WORDS) { | |
283 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
284 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
285 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
286 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
287 | } | |
288 | if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) | |
289 | return -EFAULT; | |
290 | } | |
291 | return ret; | |
292 | } | |
293 | ||
294 | asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, | |
295 | struct compat_siginfo __user *uinfo) | |
296 | { | |
297 | siginfo_t info; | |
298 | int ret; | |
299 | mm_segment_t old_fs = get_fs(); | |
300 | ||
301 | if (copy_siginfo_from_user32(&info, uinfo)) | |
302 | return -EFAULT; | |
303 | ||
304 | set_fs (KERNEL_DS); | |
305 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); | |
306 | set_fs (old_fs); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, | |
311 | struct old_sigaction32 __user *oact) | |
312 | { | |
313 | struct k_sigaction new_ka, old_ka; | |
314 | int ret; | |
315 | ||
5526b7e4 DM |
316 | WARN_ON_ONCE(sig >= 0); |
317 | sig = -sig; | |
1da177e4 LT |
318 | |
319 | if (act) { | |
320 | compat_old_sigset_t mask; | |
321 | u32 u_handler, u_restorer; | |
322 | ||
323 | ret = get_user(u_handler, &act->sa_handler); | |
324 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
325 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
326 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
327 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
328 | ret |= __get_user(mask, &act->sa_mask); | |
329 | if (ret) | |
330 | return ret; | |
331 | new_ka.ka_restorer = NULL; | |
332 | siginitset(&new_ka.sa.sa_mask, mask); | |
333 | } | |
334 | ||
335 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
336 | ||
337 | if (!ret && oact) { | |
338 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
339 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
340 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
341 | ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); | |
342 | } | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
347 | asmlinkage long compat_sys_rt_sigaction(int sig, | |
348 | struct sigaction32 __user *act, | |
349 | struct sigaction32 __user *oact, | |
350 | void __user *restorer, | |
351 | compat_size_t sigsetsize) | |
352 | { | |
353 | struct k_sigaction new_ka, old_ka; | |
354 | int ret; | |
355 | compat_sigset_t set32; | |
356 | ||
357 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
358 | if (sigsetsize != sizeof(compat_sigset_t)) | |
359 | return -EINVAL; | |
360 | ||
1da177e4 LT |
361 | if (act) { |
362 | u32 u_handler, u_restorer; | |
363 | ||
364 | new_ka.ka_restorer = restorer; | |
365 | ret = get_user(u_handler, &act->sa_handler); | |
366 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
367 | ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); | |
368 | switch (_NSIG_WORDS) { | |
369 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); | |
370 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); | |
371 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); | |
372 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); | |
373 | } | |
374 | ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); | |
375 | ret |= __get_user(u_restorer, &act->sa_restorer); | |
376 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); | |
377 | if (ret) | |
378 | return -EFAULT; | |
379 | } | |
380 | ||
381 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
382 | ||
383 | if (!ret && oact) { | |
384 | switch (_NSIG_WORDS) { | |
385 | case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; | |
386 | case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; | |
387 | case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; | |
388 | case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; | |
389 | } | |
390 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); | |
391 | ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); | |
392 | ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); | |
393 | ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
394 | if (ret) | |
395 | ret = -EFAULT; | |
396 | } | |
397 | ||
398 | return ret; | |
399 | } | |
400 | ||
401 | /* | |
402 | * sparc32_execve() executes a new program after the asm stub has set | |
403 | * things up for us. This should basically do what I want it to. | |
404 | */ | |
405 | asmlinkage long sparc32_execve(struct pt_regs *regs) | |
406 | { | |
407 | int error, base = 0; | |
408 | char *filename; | |
409 | ||
410 | /* User register window flush is done by entry.S */ | |
411 | ||
412 | /* Check for indirect call. */ | |
413 | if ((u32)regs->u_regs[UREG_G1] == 0) | |
414 | base = 1; | |
415 | ||
416 | filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); | |
417 | error = PTR_ERR(filename); | |
418 | if (IS_ERR(filename)) | |
419 | goto out; | |
420 | ||
421 | error = compat_do_execve(filename, | |
422 | compat_ptr(regs->u_regs[base + UREG_I1]), | |
423 | compat_ptr(regs->u_regs[base + UREG_I2]), regs); | |
424 | ||
425 | putname(filename); | |
426 | ||
427 | if (!error) { | |
428 | fprs_write(0); | |
429 | current_thread_info()->xfsr[0] = 0; | |
430 | current_thread_info()->fpsaved[0] = 0; | |
431 | regs->tstate &= ~TSTATE_PEF; | |
1da177e4 LT |
432 | } |
433 | out: | |
434 | return error; | |
435 | } | |
436 | ||
437 | #ifdef CONFIG_MODULES | |
438 | ||
439 | asmlinkage long sys32_init_module(void __user *umod, u32 len, | |
440 | const char __user *uargs) | |
441 | { | |
442 | return sys_init_module(umod, len, uargs); | |
443 | } | |
444 | ||
445 | asmlinkage long sys32_delete_module(const char __user *name_user, | |
446 | unsigned int flags) | |
447 | { | |
448 | return sys_delete_module(name_user, flags); | |
449 | } | |
450 | ||
451 | #else /* CONFIG_MODULES */ | |
452 | ||
453 | asmlinkage long sys32_init_module(const char __user *name_user, | |
454 | struct module __user *mod_user) | |
455 | { | |
456 | return -ENOSYS; | |
457 | } | |
458 | ||
459 | asmlinkage long sys32_delete_module(const char __user *name_user) | |
460 | { | |
461 | return -ENOSYS; | |
462 | } | |
463 | ||
464 | #endif /* CONFIG_MODULES */ | |
465 | ||
1da177e4 LT |
466 | asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, |
467 | char __user *ubuf, | |
468 | compat_size_t count, | |
469 | unsigned long poshi, | |
470 | unsigned long poslo) | |
471 | { | |
472 | return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); | |
473 | } | |
474 | ||
475 | asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, | |
476 | char __user *ubuf, | |
477 | compat_size_t count, | |
478 | unsigned long poshi, | |
479 | unsigned long poslo) | |
480 | { | |
481 | return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); | |
482 | } | |
483 | ||
484 | asmlinkage long compat_sys_readahead(int fd, | |
485 | unsigned long offhi, | |
486 | unsigned long offlo, | |
487 | compat_size_t count) | |
488 | { | |
489 | return sys_readahead(fd, (offhi << 32) | offlo, count); | |
490 | } | |
491 | ||
492 | long compat_sys_fadvise64(int fd, | |
493 | unsigned long offhi, | |
494 | unsigned long offlo, | |
495 | compat_size_t len, int advice) | |
496 | { | |
497 | return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); | |
498 | } | |
499 | ||
500 | long compat_sys_fadvise64_64(int fd, | |
501 | unsigned long offhi, unsigned long offlo, | |
502 | unsigned long lenhi, unsigned long lenlo, | |
503 | int advice) | |
504 | { | |
505 | return sys_fadvise64_64(fd, | |
506 | (offhi << 32) | offlo, | |
507 | (lenhi << 32) | lenlo, | |
508 | advice); | |
509 | } | |
510 | ||
511 | asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, | |
512 | compat_off_t __user *offset, | |
513 | compat_size_t count) | |
514 | { | |
515 | mm_segment_t old_fs = get_fs(); | |
516 | int ret; | |
517 | off_t of; | |
518 | ||
519 | if (offset && get_user(of, offset)) | |
520 | return -EFAULT; | |
521 | ||
522 | set_fs(KERNEL_DS); | |
523 | ret = sys_sendfile(out_fd, in_fd, | |
524 | offset ? (off_t __user *) &of : NULL, | |
525 | count); | |
526 | set_fs(old_fs); | |
527 | ||
528 | if (offset && put_user(of, offset)) | |
529 | return -EFAULT; | |
530 | ||
531 | return ret; | |
532 | } | |
533 | ||
534 | asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, | |
535 | compat_loff_t __user *offset, | |
536 | compat_size_t count) | |
537 | { | |
538 | mm_segment_t old_fs = get_fs(); | |
539 | int ret; | |
540 | loff_t lof; | |
541 | ||
542 | if (offset && get_user(lof, offset)) | |
543 | return -EFAULT; | |
544 | ||
545 | set_fs(KERNEL_DS); | |
546 | ret = sys_sendfile64(out_fd, in_fd, | |
547 | offset ? (loff_t __user *) &lof : NULL, | |
548 | count); | |
549 | set_fs(old_fs); | |
550 | ||
551 | if (offset && put_user(lof, offset)) | |
552 | return -EFAULT; | |
553 | ||
554 | return ret; | |
555 | } | |
556 | ||
1da177e4 LT |
557 | /* This is just a version for 32-bit applications which does |
558 | * not force O_LARGEFILE on. | |
559 | */ | |
560 | ||
561 | asmlinkage long sparc32_open(const char __user *filename, | |
562 | int flags, int mode) | |
563 | { | |
5590ff0d | 564 | return do_sys_open(AT_FDCWD, filename, flags, mode); |
1da177e4 LT |
565 | } |
566 | ||
1da177e4 LT |
567 | long sys32_lookup_dcookie(unsigned long cookie_high, |
568 | unsigned long cookie_low, | |
569 | char __user *buf, size_t len) | |
570 | { | |
571 | return sys_lookup_dcookie((cookie_high << 32) | cookie_low, | |
572 | buf, len); | |
573 | } | |
289eee6f DM |
574 | |
575 | long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags) | |
576 | { | |
577 | return sys_sync_file_range(fd, | |
578 | (off_high << 32) | off_low, | |
579 | (nb_high << 32) | nb_low, | |
580 | flags); | |
581 | } | |
bc5a2e64 DM |
582 | |
583 | asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, | |
584 | u32 lenhi, u32 lenlo) | |
585 | { | |
586 | return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, | |
587 | ((loff_t)lenhi << 32) | lenlo); | |
588 | } |