Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on | |
c202f298 | 3 | * sys_sparc32 |
1da177e4 LT |
4 | * |
5 | * Copyright (C) 2000 VA Linux Co | |
6 | * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> | |
c202f298 TG |
7 | * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> |
8 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
9 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) | |
1da177e4 LT |
10 | * Copyright (C) 2000 Hewlett-Packard Co. |
11 | * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> | |
c202f298 | 12 | * Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port) |
1da177e4 LT |
13 | * |
14 | * These routines maintain argument size conversion between 32bit and 64bit | |
c202f298 | 15 | * environment. In 2.5 most of this should be moved to a generic directory. |
1da177e4 LT |
16 | * |
17 | * This file assumes that there is a hole at the end of user address space. | |
c202f298 TG |
18 | * |
19 | * Some of the functions are LE specific currently. These are | |
20 | * hopefully all marked. This should be fixed. | |
1da177e4 LT |
21 | */ |
22 | ||
1da177e4 LT |
23 | #include <linux/kernel.h> |
24 | #include <linux/sched.h> | |
c202f298 TG |
25 | #include <linux/fs.h> |
26 | #include <linux/file.h> | |
1da177e4 LT |
27 | #include <linux/signal.h> |
28 | #include <linux/syscalls.h> | |
29 | #include <linux/resource.h> | |
30 | #include <linux/times.h> | |
31 | #include <linux/utsname.h> | |
1da177e4 LT |
32 | #include <linux/smp.h> |
33 | #include <linux/smp_lock.h> | |
34 | #include <linux/sem.h> | |
35 | #include <linux/msg.h> | |
36 | #include <linux/mm.h> | |
37 | #include <linux/shm.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/uio.h> | |
40 | #include <linux/nfs_fs.h> | |
41 | #include <linux/quota.h> | |
42 | #include <linux/module.h> | |
43 | #include <linux/sunrpc/svc.h> | |
44 | #include <linux/nfsd/nfsd.h> | |
45 | #include <linux/nfsd/cache.h> | |
46 | #include <linux/nfsd/xdr.h> | |
47 | #include <linux/nfsd/syscall.h> | |
48 | #include <linux/poll.h> | |
49 | #include <linux/personality.h> | |
50 | #include <linux/stat.h> | |
51 | #include <linux/ipc.h> | |
52 | #include <linux/rwsem.h> | |
53 | #include <linux/binfmts.h> | |
54 | #include <linux/init.h> | |
55 | #include <linux/aio_abi.h> | |
56 | #include <linux/aio.h> | |
57 | #include <linux/compat.h> | |
58 | #include <linux/vfs.h> | |
59 | #include <linux/ptrace.h> | |
60 | #include <linux/highuid.h> | |
61 | #include <linux/vmalloc.h> | |
9e566d8b | 62 | #include <linux/fsnotify.h> |
ddb15ec1 | 63 | #include <linux/sysctl.h> |
1da177e4 LT |
64 | #include <asm/mman.h> |
65 | #include <asm/types.h> | |
66 | #include <asm/uaccess.h> | |
67 | #include <asm/semaphore.h> | |
68 | #include <asm/atomic.h> | |
69 | #include <asm/ldt.h> | |
70 | ||
71 | #include <net/scm.h> | |
72 | #include <net/sock.h> | |
73 | #include <asm/ia32.h> | |
74 | ||
75 | #define AA(__x) ((unsigned long)(__x)) | |
76 | ||
77 | int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf) | |
78 | { | |
afefdbb2 DH |
79 | compat_ino_t ino; |
80 | ||
1da177e4 LT |
81 | typeof(ubuf->st_uid) uid = 0; |
82 | typeof(ubuf->st_gid) gid = 0; | |
83 | SET_UID(uid, kbuf->uid); | |
84 | SET_GID(gid, kbuf->gid); | |
85 | if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev)) | |
86 | return -EOVERFLOW; | |
87 | if (kbuf->size >= 0x7fffffff) | |
88 | return -EOVERFLOW; | |
afefdbb2 DH |
89 | ino = kbuf->ino; |
90 | if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino) | |
91 | return -EOVERFLOW; | |
1da177e4 | 92 | if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) || |
c202f298 TG |
93 | __put_user(old_encode_dev(kbuf->dev), &ubuf->st_dev) || |
94 | __put_user(ino, &ubuf->st_ino) || | |
95 | __put_user(kbuf->mode, &ubuf->st_mode) || | |
96 | __put_user(kbuf->nlink, &ubuf->st_nlink) || | |
97 | __put_user(uid, &ubuf->st_uid) || | |
98 | __put_user(gid, &ubuf->st_gid) || | |
99 | __put_user(old_encode_dev(kbuf->rdev), &ubuf->st_rdev) || | |
100 | __put_user(kbuf->size, &ubuf->st_size) || | |
101 | __put_user(kbuf->atime.tv_sec, &ubuf->st_atime) || | |
102 | __put_user(kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) || | |
103 | __put_user(kbuf->mtime.tv_sec, &ubuf->st_mtime) || | |
104 | __put_user(kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) || | |
105 | __put_user(kbuf->ctime.tv_sec, &ubuf->st_ctime) || | |
106 | __put_user(kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) || | |
107 | __put_user(kbuf->blksize, &ubuf->st_blksize) || | |
108 | __put_user(kbuf->blocks, &ubuf->st_blocks)) | |
1da177e4 LT |
109 | return -EFAULT; |
110 | return 0; | |
111 | } | |
112 | ||
c202f298 TG |
113 | asmlinkage long sys32_truncate64(char __user *filename, |
114 | unsigned long offset_low, | |
115 | unsigned long offset_high) | |
1da177e4 LT |
116 | { |
117 | return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); | |
118 | } | |
119 | ||
c202f298 TG |
120 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, |
121 | unsigned long offset_high) | |
1da177e4 LT |
122 | { |
123 | return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); | |
124 | } | |
125 | ||
c202f298 TG |
126 | /* |
127 | * Another set for IA32/LFS -- x86_64 struct stat is different due to | |
128 | * support for 64bit inode numbers. | |
129 | */ | |
130 | static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) | |
1da177e4 LT |
131 | { |
132 | typeof(ubuf->st_uid) uid = 0; | |
133 | typeof(ubuf->st_gid) gid = 0; | |
134 | SET_UID(uid, stat->uid); | |
135 | SET_GID(gid, stat->gid); | |
136 | if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || | |
137 | __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) || | |
c202f298 TG |
138 | __put_user(stat->ino, &ubuf->__st_ino) || |
139 | __put_user(stat->ino, &ubuf->st_ino) || | |
140 | __put_user(stat->mode, &ubuf->st_mode) || | |
141 | __put_user(stat->nlink, &ubuf->st_nlink) || | |
142 | __put_user(uid, &ubuf->st_uid) || | |
143 | __put_user(gid, &ubuf->st_gid) || | |
144 | __put_user(huge_encode_dev(stat->rdev), &ubuf->st_rdev) || | |
145 | __put_user(stat->size, &ubuf->st_size) || | |
146 | __put_user(stat->atime.tv_sec, &ubuf->st_atime) || | |
147 | __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec) || | |
148 | __put_user(stat->mtime.tv_sec, &ubuf->st_mtime) || | |
149 | __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) || | |
150 | __put_user(stat->ctime.tv_sec, &ubuf->st_ctime) || | |
151 | __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) || | |
152 | __put_user(stat->blksize, &ubuf->st_blksize) || | |
153 | __put_user(stat->blocks, &ubuf->st_blocks)) | |
1da177e4 LT |
154 | return -EFAULT; |
155 | return 0; | |
156 | } | |
157 | ||
c202f298 TG |
158 | asmlinkage long sys32_stat64(char __user *filename, |
159 | struct stat64 __user *statbuf) | |
1da177e4 LT |
160 | { |
161 | struct kstat stat; | |
162 | int ret = vfs_stat(filename, &stat); | |
c202f298 | 163 | |
1da177e4 LT |
164 | if (!ret) |
165 | ret = cp_stat64(statbuf, &stat); | |
166 | return ret; | |
167 | } | |
168 | ||
c202f298 TG |
169 | asmlinkage long sys32_lstat64(char __user *filename, |
170 | struct stat64 __user *statbuf) | |
1da177e4 LT |
171 | { |
172 | struct kstat stat; | |
173 | int ret = vfs_lstat(filename, &stat); | |
174 | if (!ret) | |
175 | ret = cp_stat64(statbuf, &stat); | |
176 | return ret; | |
177 | } | |
178 | ||
c202f298 | 179 | asmlinkage long sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf) |
1da177e4 LT |
180 | { |
181 | struct kstat stat; | |
182 | int ret = vfs_fstat(fd, &stat); | |
183 | if (!ret) | |
184 | ret = cp_stat64(statbuf, &stat); | |
185 | return ret; | |
186 | } | |
187 | ||
c202f298 TG |
188 | asmlinkage long sys32_fstatat(unsigned int dfd, char __user *filename, |
189 | struct stat64 __user *statbuf, int flag) | |
cff2b760 UD |
190 | { |
191 | struct kstat stat; | |
192 | int error = -EINVAL; | |
193 | ||
194 | if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) | |
195 | goto out; | |
196 | ||
197 | if (flag & AT_SYMLINK_NOFOLLOW) | |
198 | error = vfs_lstat_fd(dfd, filename, &stat); | |
199 | else | |
200 | error = vfs_stat_fd(dfd, filename, &stat); | |
201 | ||
202 | if (!error) | |
203 | error = cp_stat64(statbuf, &stat); | |
204 | ||
205 | out: | |
206 | return error; | |
207 | } | |
208 | ||
1da177e4 LT |
209 | /* |
210 | * Linux/i386 didn't use to be able to handle more than | |
211 | * 4 system call parameters, so these system calls used a memory | |
212 | * block for parameter passing.. | |
213 | */ | |
214 | ||
215 | struct mmap_arg_struct { | |
216 | unsigned int addr; | |
217 | unsigned int len; | |
218 | unsigned int prot; | |
219 | unsigned int flags; | |
220 | unsigned int fd; | |
221 | unsigned int offset; | |
222 | }; | |
223 | ||
c202f298 | 224 | asmlinkage long sys32_mmap(struct mmap_arg_struct __user *arg) |
1da177e4 LT |
225 | { |
226 | struct mmap_arg_struct a; | |
227 | struct file *file = NULL; | |
228 | unsigned long retval; | |
229 | struct mm_struct *mm ; | |
230 | ||
231 | if (copy_from_user(&a, arg, sizeof(a))) | |
232 | return -EFAULT; | |
233 | ||
234 | if (a.offset & ~PAGE_MASK) | |
c202f298 | 235 | return -EINVAL; |
1da177e4 LT |
236 | |
237 | if (!(a.flags & MAP_ANONYMOUS)) { | |
238 | file = fget(a.fd); | |
239 | if (!file) | |
240 | return -EBADF; | |
241 | } | |
c202f298 TG |
242 | |
243 | mm = current->mm; | |
244 | down_write(&mm->mmap_sem); | |
245 | retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, | |
246 | a.offset>>PAGE_SHIFT); | |
1da177e4 LT |
247 | if (file) |
248 | fput(file); | |
249 | ||
c202f298 | 250 | up_write(&mm->mmap_sem); |
1da177e4 LT |
251 | |
252 | return retval; | |
253 | } | |
254 | ||
c202f298 TG |
255 | asmlinkage long sys32_mprotect(unsigned long start, size_t len, |
256 | unsigned long prot) | |
1da177e4 | 257 | { |
c202f298 | 258 | return sys_mprotect(start, len, prot); |
1da177e4 LT |
259 | } |
260 | ||
c202f298 | 261 | asmlinkage long sys32_pipe(int __user *fd) |
1da177e4 LT |
262 | { |
263 | int retval; | |
264 | int fds[2]; | |
265 | ||
266 | retval = do_pipe(fds); | |
267 | if (retval) | |
268 | goto out; | |
269 | if (copy_to_user(fd, fds, sizeof(fds))) | |
270 | retval = -EFAULT; | |
c202f298 | 271 | out: |
1da177e4 LT |
272 | return retval; |
273 | } | |
274 | ||
c202f298 TG |
275 | asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act, |
276 | struct sigaction32 __user *oact, | |
277 | unsigned int sigsetsize) | |
1da177e4 LT |
278 | { |
279 | struct k_sigaction new_ka, old_ka; | |
280 | int ret; | |
281 | compat_sigset_t set32; | |
282 | ||
283 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
284 | if (sigsetsize != sizeof(compat_sigset_t)) | |
285 | return -EINVAL; | |
286 | ||
287 | if (act) { | |
288 | compat_uptr_t handler, restorer; | |
289 | ||
290 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || | |
291 | __get_user(handler, &act->sa_handler) || | |
292 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || | |
c202f298 TG |
293 | __get_user(restorer, &act->sa_restorer) || |
294 | __copy_from_user(&set32, &act->sa_mask, | |
295 | sizeof(compat_sigset_t))) | |
1da177e4 LT |
296 | return -EFAULT; |
297 | new_ka.sa.sa_handler = compat_ptr(handler); | |
298 | new_ka.sa.sa_restorer = compat_ptr(restorer); | |
c202f298 TG |
299 | |
300 | /* | |
301 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= | |
302 | * than _NSIG_WORDS << 1 | |
303 | */ | |
1da177e4 LT |
304 | switch (_NSIG_WORDS) { |
305 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | |
306 | | (((long)set32.sig[7]) << 32); | |
307 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | |
308 | | (((long)set32.sig[5]) << 32); | |
309 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | |
310 | | (((long)set32.sig[3]) << 32); | |
311 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | |
312 | | (((long)set32.sig[1]) << 32); | |
313 | } | |
314 | } | |
315 | ||
316 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
317 | ||
318 | if (!ret && oact) { | |
c202f298 TG |
319 | /* |
320 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= | |
321 | * than _NSIG_WORDS << 1 | |
322 | */ | |
1da177e4 LT |
323 | switch (_NSIG_WORDS) { |
324 | case 4: | |
325 | set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); | |
326 | set32.sig[6] = old_ka.sa.sa_mask.sig[3]; | |
327 | case 3: | |
328 | set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); | |
329 | set32.sig[4] = old_ka.sa.sa_mask.sig[2]; | |
330 | case 2: | |
331 | set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); | |
332 | set32.sig[2] = old_ka.sa.sa_mask.sig[1]; | |
333 | case 1: | |
334 | set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); | |
335 | set32.sig[0] = old_ka.sa.sa_mask.sig[0]; | |
336 | } | |
337 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || | |
c202f298 TG |
338 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
339 | &oact->sa_handler) || | |
340 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), | |
341 | &oact->sa_restorer) || | |
1da177e4 | 342 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
c202f298 TG |
343 | __copy_to_user(&oact->sa_mask, &set32, |
344 | sizeof(compat_sigset_t))) | |
1da177e4 LT |
345 | return -EFAULT; |
346 | } | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
c202f298 TG |
351 | asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, |
352 | struct old_sigaction32 __user *oact) | |
1da177e4 | 353 | { |
c202f298 TG |
354 | struct k_sigaction new_ka, old_ka; |
355 | int ret; | |
1da177e4 | 356 | |
c202f298 | 357 | if (act) { |
1da177e4 LT |
358 | compat_old_sigset_t mask; |
359 | compat_uptr_t handler, restorer; | |
360 | ||
361 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || | |
362 | __get_user(handler, &act->sa_handler) || | |
363 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || | |
364 | __get_user(restorer, &act->sa_restorer) || | |
365 | __get_user(mask, &act->sa_mask)) | |
366 | return -EFAULT; | |
367 | ||
368 | new_ka.sa.sa_handler = compat_ptr(handler); | |
369 | new_ka.sa.sa_restorer = compat_ptr(restorer); | |
370 | ||
371 | siginitset(&new_ka.sa.sa_mask, mask); | |
c202f298 | 372 | } |
1da177e4 | 373 | |
c202f298 | 374 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
1da177e4 LT |
375 | |
376 | if (!ret && oact) { | |
377 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || | |
c202f298 TG |
378 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
379 | &oact->sa_handler) || | |
380 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), | |
381 | &oact->sa_restorer) || | |
1da177e4 LT |
382 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
383 | __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) | |
384 | return -EFAULT; | |
c202f298 | 385 | } |
1da177e4 LT |
386 | |
387 | return ret; | |
388 | } | |
389 | ||
c202f298 TG |
390 | asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, |
391 | compat_sigset_t __user *oset, | |
392 | unsigned int sigsetsize) | |
1da177e4 LT |
393 | { |
394 | sigset_t s; | |
395 | compat_sigset_t s32; | |
396 | int ret; | |
397 | mm_segment_t old_fs = get_fs(); | |
c202f298 | 398 | |
1da177e4 | 399 | if (set) { |
c202f298 | 400 | if (copy_from_user(&s32, set, sizeof(compat_sigset_t))) |
1da177e4 LT |
401 | return -EFAULT; |
402 | switch (_NSIG_WORDS) { | |
403 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); | |
404 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); | |
405 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); | |
406 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); | |
407 | } | |
408 | } | |
c202f298 | 409 | set_fs(KERNEL_DS); |
ddb15ec1 AK |
410 | ret = sys_rt_sigprocmask(how, |
411 | set ? (sigset_t __user *)&s : NULL, | |
412 | oset ? (sigset_t __user *)&s : NULL, | |
c202f298 TG |
413 | sigsetsize); |
414 | set_fs(old_fs); | |
415 | if (ret) | |
416 | return ret; | |
1da177e4 LT |
417 | if (oset) { |
418 | switch (_NSIG_WORDS) { | |
419 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
420 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
421 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
422 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
423 | } | |
c202f298 | 424 | if (copy_to_user(oset, &s32, sizeof(compat_sigset_t))) |
1da177e4 LT |
425 | return -EFAULT; |
426 | } | |
427 | return 0; | |
428 | } | |
429 | ||
c202f298 | 430 | static inline long get_tv32(struct timeval *o, struct compat_timeval __user *i) |
1da177e4 | 431 | { |
c202f298 TG |
432 | int err = -EFAULT; |
433 | ||
434 | if (access_ok(VERIFY_READ, i, sizeof(*i))) { | |
1da177e4 LT |
435 | err = __get_user(o->tv_sec, &i->tv_sec); |
436 | err |= __get_user(o->tv_usec, &i->tv_usec); | |
437 | } | |
c202f298 | 438 | return err; |
1da177e4 LT |
439 | } |
440 | ||
c202f298 | 441 | static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) |
1da177e4 LT |
442 | { |
443 | int err = -EFAULT; | |
c202f298 TG |
444 | |
445 | if (access_ok(VERIFY_WRITE, o, sizeof(*o))) { | |
1da177e4 LT |
446 | err = __put_user(i->tv_sec, &o->tv_sec); |
447 | err |= __put_user(i->tv_usec, &o->tv_usec); | |
c202f298 TG |
448 | } |
449 | return err; | |
1da177e4 LT |
450 | } |
451 | ||
c202f298 | 452 | asmlinkage long sys32_alarm(unsigned int seconds) |
1da177e4 | 453 | { |
c08b8a49 | 454 | return alarm_setitimer(seconds); |
1da177e4 LT |
455 | } |
456 | ||
c202f298 TG |
457 | /* |
458 | * Translations due to time_t size differences. Which affects all | |
459 | * sorts of things, like timeval and itimerval. | |
460 | */ | |
461 | asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, | |
462 | struct timezone __user *tz) | |
1da177e4 LT |
463 | { |
464 | if (tv) { | |
465 | struct timeval ktv; | |
c202f298 | 466 | |
1da177e4 LT |
467 | do_gettimeofday(&ktv); |
468 | if (put_tv32(tv, &ktv)) | |
469 | return -EFAULT; | |
470 | } | |
471 | if (tz) { | |
472 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
473 | return -EFAULT; | |
474 | } | |
475 | return 0; | |
476 | } | |
477 | ||
c202f298 TG |
478 | asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, |
479 | struct timezone __user *tz) | |
1da177e4 LT |
480 | { |
481 | struct timeval ktv; | |
482 | struct timespec kts; | |
483 | struct timezone ktz; | |
484 | ||
c202f298 | 485 | if (tv) { |
1da177e4 LT |
486 | if (get_tv32(&ktv, tv)) |
487 | return -EFAULT; | |
488 | kts.tv_sec = ktv.tv_sec; | |
489 | kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC; | |
490 | } | |
491 | if (tz) { | |
492 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
493 | return -EFAULT; | |
494 | } | |
495 | ||
496 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
497 | } | |
498 | ||
499 | struct sel_arg_struct { | |
500 | unsigned int n; | |
501 | unsigned int inp; | |
502 | unsigned int outp; | |
503 | unsigned int exp; | |
504 | unsigned int tvp; | |
505 | }; | |
506 | ||
c202f298 | 507 | asmlinkage long sys32_old_select(struct sel_arg_struct __user *arg) |
1da177e4 LT |
508 | { |
509 | struct sel_arg_struct a; | |
510 | ||
511 | if (copy_from_user(&a, arg, sizeof(a))) | |
512 | return -EFAULT; | |
513 | return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp), | |
514 | compat_ptr(a.exp), compat_ptr(a.tvp)); | |
515 | } | |
516 | ||
c202f298 TG |
517 | asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, |
518 | int options) | |
1da177e4 LT |
519 | { |
520 | return compat_sys_wait4(pid, stat_addr, options, NULL); | |
521 | } | |
522 | ||
1da177e4 LT |
523 | /* 32-bit timeval and related flotsam. */ |
524 | ||
c202f298 | 525 | asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2) |
1da177e4 LT |
526 | { |
527 | return sys_sysfs(option, arg1, arg2); | |
528 | } | |
529 | ||
c202f298 TG |
530 | asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, |
531 | struct compat_timespec __user *interval) | |
1da177e4 LT |
532 | { |
533 | struct timespec t; | |
534 | int ret; | |
c202f298 TG |
535 | mm_segment_t old_fs = get_fs(); |
536 | ||
537 | set_fs(KERNEL_DS); | |
ddb15ec1 | 538 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
c202f298 | 539 | set_fs(old_fs); |
1da177e4 LT |
540 | if (put_compat_timespec(&t, interval)) |
541 | return -EFAULT; | |
542 | return ret; | |
543 | } | |
544 | ||
c202f298 TG |
545 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, |
546 | compat_size_t sigsetsize) | |
1da177e4 LT |
547 | { |
548 | sigset_t s; | |
549 | compat_sigset_t s32; | |
550 | int ret; | |
551 | mm_segment_t old_fs = get_fs(); | |
c202f298 TG |
552 | |
553 | set_fs(KERNEL_DS); | |
ddb15ec1 | 554 | ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); |
c202f298 | 555 | set_fs(old_fs); |
1da177e4 LT |
556 | if (!ret) { |
557 | switch (_NSIG_WORDS) { | |
558 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
559 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
560 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
561 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
562 | } | |
c202f298 | 563 | if (copy_to_user(set, &s32, sizeof(compat_sigset_t))) |
1da177e4 LT |
564 | return -EFAULT; |
565 | } | |
566 | return ret; | |
567 | } | |
568 | ||
c202f298 TG |
569 | asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, |
570 | compat_siginfo_t __user *uinfo) | |
1da177e4 LT |
571 | { |
572 | siginfo_t info; | |
573 | int ret; | |
574 | mm_segment_t old_fs = get_fs(); | |
c202f298 | 575 | |
1da177e4 LT |
576 | if (copy_siginfo_from_user32(&info, uinfo)) |
577 | return -EFAULT; | |
c202f298 | 578 | set_fs(KERNEL_DS); |
ddb15ec1 | 579 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); |
c202f298 | 580 | set_fs(old_fs); |
1da177e4 LT |
581 | return ret; |
582 | } | |
583 | ||
584 | /* These are here just in case some old ia32 binary calls it. */ | |
c202f298 | 585 | asmlinkage long sys32_pause(void) |
1da177e4 LT |
586 | { |
587 | current->state = TASK_INTERRUPTIBLE; | |
588 | schedule(); | |
589 | return -ERESTARTNOHAND; | |
590 | } | |
591 | ||
592 | ||
b89a8171 | 593 | #ifdef CONFIG_SYSCTL_SYSCALL |
1da177e4 LT |
594 | struct sysctl_ia32 { |
595 | unsigned int name; | |
596 | int nlen; | |
597 | unsigned int oldval; | |
598 | unsigned int oldlenp; | |
599 | unsigned int newval; | |
600 | unsigned int newlen; | |
601 | unsigned int __unused[4]; | |
602 | }; | |
603 | ||
604 | ||
c202f298 | 605 | asmlinkage long sys32_sysctl(struct sysctl_ia32 __user *args32) |
1da177e4 LT |
606 | { |
607 | struct sysctl_ia32 a32; | |
c202f298 | 608 | mm_segment_t old_fs = get_fs(); |
1da177e4 LT |
609 | void __user *oldvalp, *newvalp; |
610 | size_t oldlen; | |
611 | int __user *namep; | |
612 | long ret; | |
1da177e4 | 613 | |
c202f298 | 614 | if (copy_from_user(&a32, args32, sizeof(a32))) |
1da177e4 LT |
615 | return -EFAULT; |
616 | ||
617 | /* | |
c202f298 TG |
618 | * We need to pre-validate these because we have to disable |
619 | * address checking before calling do_sysctl() because of | |
620 | * OLDLEN but we can't run the risk of the user specifying bad | |
621 | * addresses here. Well, since we're dealing with 32 bit | |
622 | * addresses, we KNOW that access_ok() will always succeed, so | |
623 | * this is an expensive NOP, but so what... | |
1da177e4 LT |
624 | */ |
625 | namep = compat_ptr(a32.name); | |
626 | oldvalp = compat_ptr(a32.oldval); | |
627 | newvalp = compat_ptr(a32.newval); | |
628 | ||
629 | if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) | |
630 | || !access_ok(VERIFY_WRITE, namep, 0) | |
631 | || !access_ok(VERIFY_WRITE, oldvalp, 0) | |
632 | || !access_ok(VERIFY_WRITE, newvalp, 0)) | |
633 | return -EFAULT; | |
634 | ||
635 | set_fs(KERNEL_DS); | |
636 | lock_kernel(); | |
ddb15ec1 AK |
637 | ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen, |
638 | newvalp, (size_t) a32.newlen); | |
1da177e4 LT |
639 | unlock_kernel(); |
640 | set_fs(old_fs); | |
641 | ||
c202f298 | 642 | if (oldvalp && put_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) |
1da177e4 LT |
643 | return -EFAULT; |
644 | ||
645 | return ret; | |
646 | } | |
647 | #endif | |
648 | ||
c202f298 TG |
649 | /* warning: next two assume little endian */ |
650 | asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count, | |
651 | u32 poslo, u32 poshi) | |
1da177e4 LT |
652 | { |
653 | return sys_pread64(fd, ubuf, count, | |
654 | ((loff_t)AA(poshi) << 32) | AA(poslo)); | |
655 | } | |
656 | ||
c202f298 TG |
657 | asmlinkage long sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, |
658 | u32 poslo, u32 poshi) | |
1da177e4 LT |
659 | { |
660 | return sys_pwrite64(fd, ubuf, count, | |
661 | ((loff_t)AA(poshi) << 32) | AA(poslo)); | |
662 | } | |
663 | ||
664 | ||
c202f298 | 665 | asmlinkage long sys32_personality(unsigned long personality) |
1da177e4 LT |
666 | { |
667 | int ret; | |
c202f298 TG |
668 | |
669 | if (personality(current->personality) == PER_LINUX32 && | |
1da177e4 LT |
670 | personality == PER_LINUX) |
671 | personality = PER_LINUX32; | |
672 | ret = sys_personality(personality); | |
673 | if (ret == PER_LINUX32) | |
674 | ret = PER_LINUX; | |
675 | return ret; | |
676 | } | |
677 | ||
c202f298 TG |
678 | asmlinkage long sys32_sendfile(int out_fd, int in_fd, |
679 | compat_off_t __user *offset, s32 count) | |
1da177e4 LT |
680 | { |
681 | mm_segment_t old_fs = get_fs(); | |
682 | int ret; | |
683 | off_t of; | |
c202f298 | 684 | |
1da177e4 LT |
685 | if (offset && get_user(of, offset)) |
686 | return -EFAULT; | |
c202f298 | 687 | |
1da177e4 | 688 | set_fs(KERNEL_DS); |
ddb15ec1 AK |
689 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, |
690 | count); | |
1da177e4 | 691 | set_fs(old_fs); |
c202f298 | 692 | |
83b942bd | 693 | if (offset && put_user(of, offset)) |
1da177e4 | 694 | return -EFAULT; |
1da177e4 LT |
695 | return ret; |
696 | } | |
697 | ||
1da177e4 | 698 | asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len, |
c202f298 TG |
699 | unsigned long prot, unsigned long flags, |
700 | unsigned long fd, unsigned long pgoff) | |
1da177e4 LT |
701 | { |
702 | struct mm_struct *mm = current->mm; | |
703 | unsigned long error; | |
c202f298 | 704 | struct file *file = NULL; |
1da177e4 LT |
705 | |
706 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
707 | if (!(flags & MAP_ANONYMOUS)) { | |
708 | file = fget(fd); | |
709 | if (!file) | |
710 | return -EBADF; | |
711 | } | |
712 | ||
713 | down_write(&mm->mmap_sem); | |
714 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); | |
715 | up_write(&mm->mmap_sem); | |
716 | ||
717 | if (file) | |
718 | fput(file); | |
719 | return error; | |
720 | } | |
721 | ||
c202f298 | 722 | asmlinkage long sys32_olduname(struct oldold_utsname __user *name) |
1da177e4 | 723 | { |
c202f298 | 724 | char *arch = "x86_64"; |
26c13f2b | 725 | int err; |
1da177e4 LT |
726 | |
727 | if (!name) | |
728 | return -EFAULT; | |
e9ff3990 | 729 | if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname))) |
1da177e4 | 730 | return -EFAULT; |
c202f298 TG |
731 | |
732 | down_read(&uts_sem); | |
733 | ||
734 | err = __copy_to_user(&name->sysname, &utsname()->sysname, | |
735 | __OLD_UTS_LEN); | |
736 | err |= __put_user(0, name->sysname+__OLD_UTS_LEN); | |
737 | err |= __copy_to_user(&name->nodename, &utsname()->nodename, | |
738 | __OLD_UTS_LEN); | |
739 | err |= __put_user(0, name->nodename+__OLD_UTS_LEN); | |
740 | err |= __copy_to_user(&name->release, &utsname()->release, | |
741 | __OLD_UTS_LEN); | |
742 | err |= __put_user(0, name->release+__OLD_UTS_LEN); | |
743 | err |= __copy_to_user(&name->version, &utsname()->version, | |
744 | __OLD_UTS_LEN); | |
745 | err |= __put_user(0, name->version+__OLD_UTS_LEN); | |
746 | ||
747 | if (personality(current->personality) == PER_LINUX32) | |
748 | arch = "i686"; | |
749 | ||
750 | err |= __copy_to_user(&name->machine, arch, strlen(arch) + 1); | |
e9ff3990 SH |
751 | |
752 | up_read(&uts_sem); | |
753 | ||
754 | err = err ? -EFAULT : 0; | |
755 | ||
756 | return err; | |
1da177e4 LT |
757 | } |
758 | ||
c202f298 | 759 | long sys32_uname(struct old_utsname __user *name) |
1da177e4 LT |
760 | { |
761 | int err; | |
c202f298 | 762 | |
1da177e4 LT |
763 | if (!name) |
764 | return -EFAULT; | |
765 | down_read(&uts_sem); | |
c202f298 | 766 | err = copy_to_user(name, utsname(), sizeof(*name)); |
1da177e4 | 767 | up_read(&uts_sem); |
c202f298 | 768 | if (personality(current->personality) == PER_LINUX32) |
1da177e4 | 769 | err |= copy_to_user(&name->machine, "i686", 5); |
c202f298 TG |
770 | |
771 | return err ? -EFAULT : 0; | |
1da177e4 LT |
772 | } |
773 | ||
774 | long sys32_ustat(unsigned dev, struct ustat32 __user *u32p) | |
775 | { | |
776 | struct ustat u; | |
777 | mm_segment_t seg; | |
778 | int ret; | |
c202f298 TG |
779 | |
780 | seg = get_fs(); | |
781 | set_fs(KERNEL_DS); | |
ddb15ec1 | 782 | ret = sys_ustat(dev, (struct ustat __user *)&u); |
1da177e4 | 783 | set_fs(seg); |
c202f298 TG |
784 | if (ret < 0) |
785 | return ret; | |
786 | ||
787 | if (!access_ok(VERIFY_WRITE, u32p, sizeof(struct ustat32)) || | |
788 | __put_user((__u32) u.f_tfree, &u32p->f_tfree) || | |
789 | __put_user((__u32) u.f_tinode, &u32p->f_tfree) || | |
790 | __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) || | |
791 | __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack))) | |
792 | ret = -EFAULT; | |
1da177e4 | 793 | return ret; |
c202f298 | 794 | } |
1da177e4 LT |
795 | |
796 | asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, | |
797 | compat_uptr_t __user *envp, struct pt_regs *regs) | |
798 | { | |
799 | long error; | |
c202f298 | 800 | char *filename; |
1da177e4 LT |
801 | |
802 | filename = getname(name); | |
803 | error = PTR_ERR(filename); | |
804 | if (IS_ERR(filename)) | |
805 | return error; | |
806 | error = compat_do_execve(filename, argv, envp, regs); | |
807 | if (error == 0) { | |
808 | task_lock(current); | |
809 | current->ptrace &= ~PT_DTRACE; | |
810 | task_unlock(current); | |
811 | } | |
812 | putname(filename); | |
813 | return error; | |
814 | } | |
815 | ||
816 | asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, | |
817 | struct pt_regs *regs) | |
818 | { | |
65ea5b03 PA |
819 | void __user *parent_tid = (void __user *)regs->dx; |
820 | void __user *child_tid = (void __user *)regs->di; | |
c202f298 | 821 | |
1da177e4 | 822 | if (!newsp) |
65ea5b03 | 823 | newsp = regs->sp; |
c202f298 | 824 | return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); |
1da177e4 LT |
825 | } |
826 | ||
827 | /* | |
c202f298 TG |
828 | * Some system calls that need sign extended arguments. This could be |
829 | * done by a generic wrapper. | |
830 | */ | |
831 | long sys32_lseek(unsigned int fd, int offset, unsigned int whence) | |
1da177e4 LT |
832 | { |
833 | return sys_lseek(fd, offset, whence); | |
834 | } | |
835 | ||
836 | long sys32_kill(int pid, int sig) | |
837 | { | |
838 | return sys_kill(pid, sig); | |
839 | } | |
c202f298 TG |
840 | |
841 | long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, | |
1da177e4 | 842 | __u32 len_low, __u32 len_high, int advice) |
c202f298 | 843 | { |
1da177e4 LT |
844 | return sys_fadvise64_64(fd, |
845 | (((u64)offset_high)<<32) | offset_low, | |
846 | (((u64)len_high)<<32) | len_low, | |
c202f298 TG |
847 | advice); |
848 | } | |
1da177e4 LT |
849 | |
850 | long sys32_vm86_warning(void) | |
c202f298 | 851 | { |
1da177e4 LT |
852 | struct task_struct *me = current; |
853 | static char lastcomm[sizeof(me->comm)]; | |
c202f298 | 854 | |
1da177e4 | 855 | if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) { |
c202f298 TG |
856 | compat_printk(KERN_INFO |
857 | "%s: vm86 mode not supported on 64 bit kernel\n", | |
858 | me->comm); | |
1da177e4 | 859 | strncpy(lastcomm, me->comm, sizeof(lastcomm)); |
c202f298 | 860 | } |
1da177e4 | 861 | return -ENOSYS; |
c202f298 | 862 | } |
1da177e4 LT |
863 | |
864 | long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, | |
c202f298 | 865 | char __user *buf, size_t len) |
1da177e4 LT |
866 | { |
867 | return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); | |
868 | } | |
869 | ||
c202f298 TG |
870 | asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, |
871 | size_t count) | |
e412ac49 AK |
872 | { |
873 | return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); | |
874 | } | |
875 | ||
876 | asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, | |
c202f298 | 877 | unsigned n_low, unsigned n_hi, int flags) |
e412ac49 AK |
878 | { |
879 | return sys_sync_file_range(fd, | |
880 | ((u64)off_hi << 32) | off_low, | |
881 | ((u64)n_hi << 32) | n_low, flags); | |
882 | } | |
883 | ||
c202f298 TG |
884 | asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, |
885 | size_t len, int advice) | |
e412ac49 AK |
886 | { |
887 | return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, | |
888 | len, advice); | |
889 | } | |
97ac7350 AA |
890 | |
891 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo, | |
892 | unsigned offset_hi, unsigned len_lo, | |
893 | unsigned len_hi) | |
894 | { | |
895 | return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, | |
896 | ((u64)len_hi << 32) | len_lo); | |
897 | } |