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Commit | Line | Data |
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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> | |
1da177e4 LT |
29 | #include <linux/times.h> |
30 | #include <linux/utsname.h> | |
1da177e4 | 31 | #include <linux/smp_lock.h> |
1da177e4 | 32 | #include <linux/mm.h> |
1da177e4 | 33 | #include <linux/uio.h> |
1da177e4 LT |
34 | #include <linux/poll.h> |
35 | #include <linux/personality.h> | |
36 | #include <linux/stat.h> | |
1da177e4 | 37 | #include <linux/rwsem.h> |
1da177e4 LT |
38 | #include <linux/compat.h> |
39 | #include <linux/vfs.h> | |
40 | #include <linux/ptrace.h> | |
41 | #include <linux/highuid.h> | |
ddb15ec1 | 42 | #include <linux/sysctl.h> |
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 LT |
44 | #include <asm/mman.h> |
45 | #include <asm/types.h> | |
46 | #include <asm/uaccess.h> | |
1da177e4 | 47 | #include <asm/atomic.h> |
28d23128 | 48 | #include <asm/vgtod.h> |
2f06de06 | 49 | #include <asm/sys_ia32.h> |
1da177e4 LT |
50 | |
51 | #define AA(__x) ((unsigned long)(__x)) | |
52 | ||
1da177e4 | 53 | |
c202f298 TG |
54 | asmlinkage long sys32_truncate64(char __user *filename, |
55 | unsigned long offset_low, | |
56 | unsigned long offset_high) | |
1da177e4 LT |
57 | { |
58 | return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); | |
59 | } | |
60 | ||
c202f298 TG |
61 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, |
62 | unsigned long offset_high) | |
1da177e4 LT |
63 | { |
64 | return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); | |
65 | } | |
66 | ||
c202f298 TG |
67 | /* |
68 | * Another set for IA32/LFS -- x86_64 struct stat is different due to | |
69 | * support for 64bit inode numbers. | |
70 | */ | |
71 | static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) | |
1da177e4 LT |
72 | { |
73 | typeof(ubuf->st_uid) uid = 0; | |
74 | typeof(ubuf->st_gid) gid = 0; | |
75 | SET_UID(uid, stat->uid); | |
76 | SET_GID(gid, stat->gid); | |
77 | if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || | |
78 | __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) || | |
c202f298 TG |
79 | __put_user(stat->ino, &ubuf->__st_ino) || |
80 | __put_user(stat->ino, &ubuf->st_ino) || | |
81 | __put_user(stat->mode, &ubuf->st_mode) || | |
82 | __put_user(stat->nlink, &ubuf->st_nlink) || | |
83 | __put_user(uid, &ubuf->st_uid) || | |
84 | __put_user(gid, &ubuf->st_gid) || | |
85 | __put_user(huge_encode_dev(stat->rdev), &ubuf->st_rdev) || | |
86 | __put_user(stat->size, &ubuf->st_size) || | |
87 | __put_user(stat->atime.tv_sec, &ubuf->st_atime) || | |
88 | __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec) || | |
89 | __put_user(stat->mtime.tv_sec, &ubuf->st_mtime) || | |
90 | __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) || | |
91 | __put_user(stat->ctime.tv_sec, &ubuf->st_ctime) || | |
92 | __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) || | |
93 | __put_user(stat->blksize, &ubuf->st_blksize) || | |
94 | __put_user(stat->blocks, &ubuf->st_blocks)) | |
1da177e4 LT |
95 | return -EFAULT; |
96 | return 0; | |
97 | } | |
98 | ||
c202f298 TG |
99 | asmlinkage long sys32_stat64(char __user *filename, |
100 | struct stat64 __user *statbuf) | |
1da177e4 LT |
101 | { |
102 | struct kstat stat; | |
103 | int ret = vfs_stat(filename, &stat); | |
c202f298 | 104 | |
1da177e4 LT |
105 | if (!ret) |
106 | ret = cp_stat64(statbuf, &stat); | |
107 | return ret; | |
108 | } | |
109 | ||
c202f298 TG |
110 | asmlinkage long sys32_lstat64(char __user *filename, |
111 | struct stat64 __user *statbuf) | |
1da177e4 LT |
112 | { |
113 | struct kstat stat; | |
114 | int ret = vfs_lstat(filename, &stat); | |
115 | if (!ret) | |
116 | ret = cp_stat64(statbuf, &stat); | |
117 | return ret; | |
118 | } | |
119 | ||
c202f298 | 120 | asmlinkage long sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf) |
1da177e4 LT |
121 | { |
122 | struct kstat stat; | |
123 | int ret = vfs_fstat(fd, &stat); | |
124 | if (!ret) | |
125 | ret = cp_stat64(statbuf, &stat); | |
126 | return ret; | |
127 | } | |
128 | ||
c202f298 TG |
129 | asmlinkage long sys32_fstatat(unsigned int dfd, char __user *filename, |
130 | struct stat64 __user *statbuf, int flag) | |
cff2b760 UD |
131 | { |
132 | struct kstat stat; | |
0112fc22 | 133 | int error; |
cff2b760 | 134 | |
0112fc22 OD |
135 | error = vfs_fstatat(dfd, filename, &stat, flag); |
136 | if (error) | |
137 | return error; | |
138 | return cp_stat64(statbuf, &stat); | |
cff2b760 UD |
139 | } |
140 | ||
1da177e4 LT |
141 | /* |
142 | * Linux/i386 didn't use to be able to handle more than | |
143 | * 4 system call parameters, so these system calls used a memory | |
144 | * block for parameter passing.. | |
145 | */ | |
146 | ||
a4679373 | 147 | struct mmap_arg_struct32 { |
1da177e4 LT |
148 | unsigned int addr; |
149 | unsigned int len; | |
150 | unsigned int prot; | |
151 | unsigned int flags; | |
152 | unsigned int fd; | |
153 | unsigned int offset; | |
154 | }; | |
155 | ||
a4679373 | 156 | asmlinkage long sys32_mmap(struct mmap_arg_struct32 __user *arg) |
1da177e4 | 157 | { |
a4679373 | 158 | struct mmap_arg_struct32 a; |
1da177e4 LT |
159 | |
160 | if (copy_from_user(&a, arg, sizeof(a))) | |
161 | return -EFAULT; | |
162 | ||
163 | if (a.offset & ~PAGE_MASK) | |
c202f298 | 164 | return -EINVAL; |
1da177e4 | 165 | |
f8b72560 | 166 | return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, |
c202f298 | 167 | a.offset>>PAGE_SHIFT); |
1da177e4 LT |
168 | } |
169 | ||
c202f298 TG |
170 | asmlinkage long sys32_mprotect(unsigned long start, size_t len, |
171 | unsigned long prot) | |
1da177e4 | 172 | { |
c202f298 | 173 | return sys_mprotect(start, len, prot); |
1da177e4 LT |
174 | } |
175 | ||
c202f298 TG |
176 | asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act, |
177 | struct sigaction32 __user *oact, | |
178 | unsigned int sigsetsize) | |
1da177e4 LT |
179 | { |
180 | struct k_sigaction new_ka, old_ka; | |
181 | int ret; | |
182 | compat_sigset_t set32; | |
183 | ||
184 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
185 | if (sigsetsize != sizeof(compat_sigset_t)) | |
186 | return -EINVAL; | |
187 | ||
188 | if (act) { | |
189 | compat_uptr_t handler, restorer; | |
190 | ||
191 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || | |
192 | __get_user(handler, &act->sa_handler) || | |
193 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || | |
c202f298 TG |
194 | __get_user(restorer, &act->sa_restorer) || |
195 | __copy_from_user(&set32, &act->sa_mask, | |
196 | sizeof(compat_sigset_t))) | |
1da177e4 LT |
197 | return -EFAULT; |
198 | new_ka.sa.sa_handler = compat_ptr(handler); | |
199 | new_ka.sa.sa_restorer = compat_ptr(restorer); | |
c202f298 TG |
200 | |
201 | /* | |
202 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= | |
203 | * than _NSIG_WORDS << 1 | |
204 | */ | |
1da177e4 LT |
205 | switch (_NSIG_WORDS) { |
206 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | |
207 | | (((long)set32.sig[7]) << 32); | |
208 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | |
209 | | (((long)set32.sig[5]) << 32); | |
210 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | |
211 | | (((long)set32.sig[3]) << 32); | |
212 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | |
213 | | (((long)set32.sig[1]) << 32); | |
214 | } | |
215 | } | |
216 | ||
217 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
218 | ||
219 | if (!ret && oact) { | |
c202f298 TG |
220 | /* |
221 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= | |
222 | * than _NSIG_WORDS << 1 | |
223 | */ | |
1da177e4 LT |
224 | switch (_NSIG_WORDS) { |
225 | case 4: | |
226 | set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); | |
227 | set32.sig[6] = old_ka.sa.sa_mask.sig[3]; | |
228 | case 3: | |
229 | set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); | |
230 | set32.sig[4] = old_ka.sa.sa_mask.sig[2]; | |
231 | case 2: | |
232 | set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); | |
233 | set32.sig[2] = old_ka.sa.sa_mask.sig[1]; | |
234 | case 1: | |
235 | set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); | |
236 | set32.sig[0] = old_ka.sa.sa_mask.sig[0]; | |
237 | } | |
238 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || | |
c202f298 TG |
239 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
240 | &oact->sa_handler) || | |
241 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), | |
242 | &oact->sa_restorer) || | |
1da177e4 | 243 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
c202f298 TG |
244 | __copy_to_user(&oact->sa_mask, &set32, |
245 | sizeof(compat_sigset_t))) | |
1da177e4 LT |
246 | return -EFAULT; |
247 | } | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
c202f298 TG |
252 | asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, |
253 | struct old_sigaction32 __user *oact) | |
1da177e4 | 254 | { |
c202f298 TG |
255 | struct k_sigaction new_ka, old_ka; |
256 | int ret; | |
1da177e4 | 257 | |
c202f298 | 258 | if (act) { |
1da177e4 LT |
259 | compat_old_sigset_t mask; |
260 | compat_uptr_t handler, restorer; | |
261 | ||
262 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || | |
263 | __get_user(handler, &act->sa_handler) || | |
264 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || | |
265 | __get_user(restorer, &act->sa_restorer) || | |
266 | __get_user(mask, &act->sa_mask)) | |
267 | return -EFAULT; | |
268 | ||
269 | new_ka.sa.sa_handler = compat_ptr(handler); | |
270 | new_ka.sa.sa_restorer = compat_ptr(restorer); | |
271 | ||
272 | siginitset(&new_ka.sa.sa_mask, mask); | |
c202f298 | 273 | } |
1da177e4 | 274 | |
c202f298 | 275 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
1da177e4 LT |
276 | |
277 | if (!ret && oact) { | |
278 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || | |
c202f298 TG |
279 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
280 | &oact->sa_handler) || | |
281 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), | |
282 | &oact->sa_restorer) || | |
1da177e4 LT |
283 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
284 | __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) | |
285 | return -EFAULT; | |
c202f298 | 286 | } |
1da177e4 LT |
287 | |
288 | return ret; | |
289 | } | |
290 | ||
c202f298 TG |
291 | asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, |
292 | compat_sigset_t __user *oset, | |
293 | unsigned int sigsetsize) | |
1da177e4 LT |
294 | { |
295 | sigset_t s; | |
296 | compat_sigset_t s32; | |
297 | int ret; | |
298 | mm_segment_t old_fs = get_fs(); | |
c202f298 | 299 | |
1da177e4 | 300 | if (set) { |
c202f298 | 301 | if (copy_from_user(&s32, set, sizeof(compat_sigset_t))) |
1da177e4 LT |
302 | return -EFAULT; |
303 | switch (_NSIG_WORDS) { | |
304 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); | |
305 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); | |
306 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); | |
307 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); | |
308 | } | |
309 | } | |
c202f298 | 310 | set_fs(KERNEL_DS); |
ddb15ec1 AK |
311 | ret = sys_rt_sigprocmask(how, |
312 | set ? (sigset_t __user *)&s : NULL, | |
313 | oset ? (sigset_t __user *)&s : NULL, | |
c202f298 TG |
314 | sigsetsize); |
315 | set_fs(old_fs); | |
316 | if (ret) | |
317 | return ret; | |
1da177e4 LT |
318 | if (oset) { |
319 | switch (_NSIG_WORDS) { | |
320 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
321 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
322 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
323 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
324 | } | |
c202f298 | 325 | if (copy_to_user(oset, &s32, sizeof(compat_sigset_t))) |
1da177e4 LT |
326 | return -EFAULT; |
327 | } | |
328 | return 0; | |
329 | } | |
330 | ||
c202f298 | 331 | asmlinkage long sys32_alarm(unsigned int seconds) |
1da177e4 | 332 | { |
c08b8a49 | 333 | return alarm_setitimer(seconds); |
1da177e4 LT |
334 | } |
335 | ||
c202f298 TG |
336 | asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, |
337 | int options) | |
1da177e4 LT |
338 | { |
339 | return compat_sys_wait4(pid, stat_addr, options, NULL); | |
340 | } | |
341 | ||
1da177e4 LT |
342 | /* 32-bit timeval and related flotsam. */ |
343 | ||
c202f298 | 344 | asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2) |
1da177e4 LT |
345 | { |
346 | return sys_sysfs(option, arg1, arg2); | |
347 | } | |
348 | ||
c202f298 TG |
349 | asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, |
350 | struct compat_timespec __user *interval) | |
1da177e4 LT |
351 | { |
352 | struct timespec t; | |
353 | int ret; | |
c202f298 TG |
354 | mm_segment_t old_fs = get_fs(); |
355 | ||
356 | set_fs(KERNEL_DS); | |
ddb15ec1 | 357 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
c202f298 | 358 | set_fs(old_fs); |
1da177e4 LT |
359 | if (put_compat_timespec(&t, interval)) |
360 | return -EFAULT; | |
361 | return ret; | |
362 | } | |
363 | ||
c202f298 TG |
364 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, |
365 | compat_size_t sigsetsize) | |
1da177e4 LT |
366 | { |
367 | sigset_t s; | |
368 | compat_sigset_t s32; | |
369 | int ret; | |
370 | mm_segment_t old_fs = get_fs(); | |
c202f298 TG |
371 | |
372 | set_fs(KERNEL_DS); | |
ddb15ec1 | 373 | ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); |
c202f298 | 374 | set_fs(old_fs); |
1da177e4 LT |
375 | if (!ret) { |
376 | switch (_NSIG_WORDS) { | |
377 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; | |
378 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; | |
379 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; | |
380 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; | |
381 | } | |
c202f298 | 382 | if (copy_to_user(set, &s32, sizeof(compat_sigset_t))) |
1da177e4 LT |
383 | return -EFAULT; |
384 | } | |
385 | return ret; | |
386 | } | |
387 | ||
c202f298 TG |
388 | asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, |
389 | compat_siginfo_t __user *uinfo) | |
1da177e4 LT |
390 | { |
391 | siginfo_t info; | |
392 | int ret; | |
393 | mm_segment_t old_fs = get_fs(); | |
c202f298 | 394 | |
1da177e4 LT |
395 | if (copy_siginfo_from_user32(&info, uinfo)) |
396 | return -EFAULT; | |
c202f298 | 397 | set_fs(KERNEL_DS); |
ddb15ec1 | 398 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); |
c202f298 | 399 | set_fs(old_fs); |
1da177e4 LT |
400 | return ret; |
401 | } | |
402 | ||
c202f298 TG |
403 | /* warning: next two assume little endian */ |
404 | asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count, | |
405 | u32 poslo, u32 poshi) | |
1da177e4 LT |
406 | { |
407 | return sys_pread64(fd, ubuf, count, | |
408 | ((loff_t)AA(poshi) << 32) | AA(poslo)); | |
409 | } | |
410 | ||
c202f298 TG |
411 | asmlinkage long sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, |
412 | u32 poslo, u32 poshi) | |
1da177e4 LT |
413 | { |
414 | return sys_pwrite64(fd, ubuf, count, | |
415 | ((loff_t)AA(poshi) << 32) | AA(poslo)); | |
416 | } | |
417 | ||
418 | ||
c202f298 | 419 | asmlinkage long sys32_personality(unsigned long personality) |
1da177e4 LT |
420 | { |
421 | int ret; | |
c202f298 TG |
422 | |
423 | if (personality(current->personality) == PER_LINUX32 && | |
1da177e4 LT |
424 | personality == PER_LINUX) |
425 | personality = PER_LINUX32; | |
426 | ret = sys_personality(personality); | |
427 | if (ret == PER_LINUX32) | |
428 | ret = PER_LINUX; | |
429 | return ret; | |
430 | } | |
431 | ||
c202f298 TG |
432 | asmlinkage long sys32_sendfile(int out_fd, int in_fd, |
433 | compat_off_t __user *offset, s32 count) | |
1da177e4 LT |
434 | { |
435 | mm_segment_t old_fs = get_fs(); | |
436 | int ret; | |
437 | off_t of; | |
c202f298 | 438 | |
1da177e4 LT |
439 | if (offset && get_user(of, offset)) |
440 | return -EFAULT; | |
c202f298 | 441 | |
1da177e4 | 442 | set_fs(KERNEL_DS); |
ddb15ec1 AK |
443 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, |
444 | count); | |
1da177e4 | 445 | set_fs(old_fs); |
c202f298 | 446 | |
83b942bd | 447 | if (offset && put_user(of, offset)) |
1da177e4 | 448 | return -EFAULT; |
1da177e4 LT |
449 | return ret; |
450 | } | |
451 | ||
1da177e4 LT |
452 | asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, |
453 | compat_uptr_t __user *envp, struct pt_regs *regs) | |
454 | { | |
455 | long error; | |
c202f298 | 456 | char *filename; |
1da177e4 LT |
457 | |
458 | filename = getname(name); | |
459 | error = PTR_ERR(filename); | |
460 | if (IS_ERR(filename)) | |
461 | return error; | |
462 | error = compat_do_execve(filename, argv, envp, regs); | |
1da177e4 LT |
463 | putname(filename); |
464 | return error; | |
465 | } | |
466 | ||
467 | asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, | |
468 | struct pt_regs *regs) | |
469 | { | |
65ea5b03 PA |
470 | void __user *parent_tid = (void __user *)regs->dx; |
471 | void __user *child_tid = (void __user *)regs->di; | |
c202f298 | 472 | |
1da177e4 | 473 | if (!newsp) |
65ea5b03 | 474 | newsp = regs->sp; |
c202f298 | 475 | return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); |
1da177e4 LT |
476 | } |
477 | ||
478 | /* | |
c202f298 TG |
479 | * Some system calls that need sign extended arguments. This could be |
480 | * done by a generic wrapper. | |
481 | */ | |
482 | long sys32_lseek(unsigned int fd, int offset, unsigned int whence) | |
1da177e4 LT |
483 | { |
484 | return sys_lseek(fd, offset, whence); | |
485 | } | |
486 | ||
487 | long sys32_kill(int pid, int sig) | |
488 | { | |
489 | return sys_kill(pid, sig); | |
490 | } | |
c202f298 TG |
491 | |
492 | long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, | |
1da177e4 | 493 | __u32 len_low, __u32 len_high, int advice) |
c202f298 | 494 | { |
1da177e4 LT |
495 | return sys_fadvise64_64(fd, |
496 | (((u64)offset_high)<<32) | offset_low, | |
497 | (((u64)len_high)<<32) | len_low, | |
c202f298 TG |
498 | advice); |
499 | } | |
1da177e4 LT |
500 | |
501 | long sys32_vm86_warning(void) | |
c202f298 | 502 | { |
1da177e4 LT |
503 | struct task_struct *me = current; |
504 | static char lastcomm[sizeof(me->comm)]; | |
c202f298 | 505 | |
1da177e4 | 506 | if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) { |
c202f298 TG |
507 | compat_printk(KERN_INFO |
508 | "%s: vm86 mode not supported on 64 bit kernel\n", | |
509 | me->comm); | |
1da177e4 | 510 | strncpy(lastcomm, me->comm, sizeof(lastcomm)); |
c202f298 | 511 | } |
1da177e4 | 512 | return -ENOSYS; |
c202f298 | 513 | } |
1da177e4 LT |
514 | |
515 | long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, | |
c202f298 | 516 | char __user *buf, size_t len) |
1da177e4 LT |
517 | { |
518 | return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); | |
519 | } | |
520 | ||
c202f298 TG |
521 | asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, |
522 | size_t count) | |
e412ac49 AK |
523 | { |
524 | return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); | |
525 | } | |
526 | ||
527 | asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, | |
c202f298 | 528 | unsigned n_low, unsigned n_hi, int flags) |
e412ac49 AK |
529 | { |
530 | return sys_sync_file_range(fd, | |
531 | ((u64)off_hi << 32) | off_low, | |
532 | ((u64)n_hi << 32) | n_low, flags); | |
533 | } | |
534 | ||
c202f298 TG |
535 | asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, |
536 | size_t len, int advice) | |
e412ac49 AK |
537 | { |
538 | return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, | |
539 | len, advice); | |
540 | } | |
97ac7350 AA |
541 | |
542 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo, | |
543 | unsigned offset_hi, unsigned len_lo, | |
544 | unsigned len_hi) | |
545 | { | |
546 | return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, | |
547 | ((u64)len_hi << 32) | len_lo); | |
548 | } |