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1da177e4 LT |
1 | /* |
2 | * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls. | |
3 | * | |
4 | * Copyright (C) 2001 IBM | |
5 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
6 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) | |
7 | * | |
8 | * These routines maintain argument size conversion between 32bit and 64bit | |
9 | * environment. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/config.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/sched.h> | |
20 | #include <linux/fs.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/file.h> | |
23 | #include <linux/signal.h> | |
24 | #include <linux/resource.h> | |
25 | #include <linux/times.h> | |
26 | #include <linux/utsname.h> | |
27 | #include <linux/timex.h> | |
28 | #include <linux/smp.h> | |
29 | #include <linux/smp_lock.h> | |
30 | #include <linux/sem.h> | |
31 | #include <linux/msg.h> | |
32 | #include <linux/shm.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/uio.h> | |
35 | #include <linux/aio.h> | |
36 | #include <linux/nfs_fs.h> | |
37 | #include <linux/module.h> | |
38 | #include <linux/sunrpc/svc.h> | |
39 | #include <linux/nfsd/nfsd.h> | |
40 | #include <linux/nfsd/cache.h> | |
41 | #include <linux/nfsd/xdr.h> | |
42 | #include <linux/nfsd/syscall.h> | |
43 | #include <linux/poll.h> | |
44 | #include <linux/personality.h> | |
45 | #include <linux/stat.h> | |
46 | #include <linux/filter.h> | |
47 | #include <linux/highmem.h> | |
48 | #include <linux/highuid.h> | |
49 | #include <linux/mman.h> | |
50 | #include <linux/ipv6.h> | |
51 | #include <linux/in.h> | |
52 | #include <linux/icmpv6.h> | |
53 | #include <linux/syscalls.h> | |
54 | #include <linux/unistd.h> | |
55 | #include <linux/sysctl.h> | |
56 | #include <linux/binfmts.h> | |
57 | #include <linux/dnotify.h> | |
58 | #include <linux/security.h> | |
59 | #include <linux/compat.h> | |
60 | #include <linux/ptrace.h> | |
61 | #include <linux/aio_abi.h> | |
62 | #include <linux/elf.h> | |
63 | ||
64 | #include <net/scm.h> | |
65 | #include <net/sock.h> | |
66 | ||
67 | #include <asm/ptrace.h> | |
68 | #include <asm/types.h> | |
69 | #include <asm/ipc.h> | |
70 | #include <asm/uaccess.h> | |
71 | #include <asm/unistd.h> | |
72 | #include <asm/semaphore.h> | |
73 | #include <asm/ppcdebug.h> | |
74 | #include <asm/time.h> | |
75 | #include <asm/mmu_context.h> | |
76 | #include <asm/systemcfg.h> | |
77 | ||
78 | #include "pci.h" | |
79 | ||
80 | /* readdir & getdents */ | |
81 | #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) | |
82 | #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1)) | |
83 | ||
84 | struct old_linux_dirent32 { | |
85 | u32 d_ino; | |
86 | u32 d_offset; | |
87 | unsigned short d_namlen; | |
88 | char d_name[1]; | |
89 | }; | |
90 | ||
91 | struct readdir_callback32 { | |
92 | struct old_linux_dirent32 __user * dirent; | |
93 | int count; | |
94 | }; | |
95 | ||
96 | static int fillonedir(void * __buf, const char * name, int namlen, | |
97 | off_t offset, ino_t ino, unsigned int d_type) | |
98 | { | |
99 | struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf; | |
100 | struct old_linux_dirent32 __user * dirent; | |
101 | ||
102 | if (buf->count) | |
103 | return -EINVAL; | |
104 | buf->count++; | |
105 | dirent = buf->dirent; | |
106 | put_user(ino, &dirent->d_ino); | |
107 | put_user(offset, &dirent->d_offset); | |
108 | put_user(namlen, &dirent->d_namlen); | |
109 | copy_to_user(dirent->d_name, name, namlen); | |
110 | put_user(0, dirent->d_name + namlen); | |
111 | return 0; | |
112 | } | |
113 | ||
114 | asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count) | |
115 | { | |
116 | int error = -EBADF; | |
117 | struct file * file; | |
118 | struct readdir_callback32 buf; | |
119 | ||
120 | file = fget(fd); | |
121 | if (!file) | |
122 | goto out; | |
123 | ||
124 | buf.count = 0; | |
125 | buf.dirent = dirent; | |
126 | ||
127 | error = vfs_readdir(file, (filldir_t)fillonedir, &buf); | |
128 | if (error < 0) | |
129 | goto out_putf; | |
130 | error = buf.count; | |
131 | ||
132 | out_putf: | |
133 | fput(file); | |
134 | out: | |
135 | return error; | |
136 | } | |
137 | ||
138 | struct linux_dirent32 { | |
139 | u32 d_ino; | |
140 | u32 d_off; | |
141 | unsigned short d_reclen; | |
142 | char d_name[1]; | |
143 | }; | |
144 | ||
145 | struct getdents_callback32 { | |
146 | struct linux_dirent32 __user * current_dir; | |
147 | struct linux_dirent32 __user * previous; | |
148 | int count; | |
149 | int error; | |
150 | }; | |
151 | ||
152 | static int filldir(void * __buf, const char * name, int namlen, off_t offset, | |
153 | ino_t ino, unsigned int d_type) | |
154 | { | |
155 | struct linux_dirent32 __user * dirent; | |
156 | struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf; | |
157 | int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2); | |
158 | ||
159 | buf->error = -EINVAL; /* only used if we fail.. */ | |
160 | if (reclen > buf->count) | |
161 | return -EINVAL; | |
162 | dirent = buf->previous; | |
163 | if (dirent) { | |
164 | if (__put_user(offset, &dirent->d_off)) | |
165 | goto efault; | |
166 | } | |
167 | dirent = buf->current_dir; | |
168 | if (__put_user(ino, &dirent->d_ino)) | |
169 | goto efault; | |
170 | if (__put_user(reclen, &dirent->d_reclen)) | |
171 | goto efault; | |
172 | if (copy_to_user(dirent->d_name, name, namlen)) | |
173 | goto efault; | |
174 | if (__put_user(0, dirent->d_name + namlen)) | |
175 | goto efault; | |
176 | if (__put_user(d_type, (char __user *) dirent + reclen - 1)) | |
177 | goto efault; | |
178 | buf->previous = dirent; | |
179 | dirent = (void __user *)dirent + reclen; | |
180 | buf->current_dir = dirent; | |
181 | buf->count -= reclen; | |
182 | return 0; | |
183 | efault: | |
184 | buf->error = -EFAULT; | |
185 | return -EFAULT; | |
186 | } | |
187 | ||
188 | asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent, | |
189 | unsigned int count) | |
190 | { | |
191 | struct file * file; | |
192 | struct linux_dirent32 __user * lastdirent; | |
193 | struct getdents_callback32 buf; | |
194 | int error; | |
195 | ||
196 | error = -EFAULT; | |
197 | if (!access_ok(VERIFY_WRITE, dirent, count)) | |
198 | goto out; | |
199 | ||
200 | error = -EBADF; | |
201 | file = fget(fd); | |
202 | if (!file) | |
203 | goto out; | |
204 | ||
205 | buf.current_dir = dirent; | |
206 | buf.previous = NULL; | |
207 | buf.count = count; | |
208 | buf.error = 0; | |
209 | ||
210 | error = vfs_readdir(file, (filldir_t)filldir, &buf); | |
211 | if (error < 0) | |
212 | goto out_putf; | |
213 | error = buf.error; | |
214 | lastdirent = buf.previous; | |
215 | if (lastdirent) { | |
216 | if (put_user(file->f_pos, &lastdirent->d_off)) | |
217 | error = -EFAULT; | |
218 | else | |
219 | error = count - buf.count; | |
220 | } | |
221 | ||
222 | out_putf: | |
223 | fput(file); | |
224 | out: | |
225 | return error; | |
226 | } | |
227 | ||
228 | asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp, | |
229 | compat_ulong_t __user *outp, compat_ulong_t __user *exp, | |
230 | compat_uptr_t tvp_x) | |
231 | { | |
232 | /* sign extend n */ | |
233 | return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x)); | |
234 | } | |
235 | ||
236 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) | |
237 | { | |
238 | long err; | |
239 | ||
240 | if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) || | |
241 | !new_valid_dev(stat->rdev)) | |
242 | return -EOVERFLOW; | |
243 | ||
244 | err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT; | |
245 | err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev); | |
246 | err |= __put_user(stat->ino, &statbuf->st_ino); | |
247 | err |= __put_user(stat->mode, &statbuf->st_mode); | |
248 | err |= __put_user(stat->nlink, &statbuf->st_nlink); | |
249 | err |= __put_user(stat->uid, &statbuf->st_uid); | |
250 | err |= __put_user(stat->gid, &statbuf->st_gid); | |
251 | err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev); | |
252 | err |= __put_user(stat->size, &statbuf->st_size); | |
253 | err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
254 | err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); | |
255 | err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime); | |
256 | err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); | |
257 | err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime); | |
258 | err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); | |
259 | err |= __put_user(stat->blksize, &statbuf->st_blksize); | |
260 | err |= __put_user(stat->blocks, &statbuf->st_blocks); | |
261 | err |= __put_user(0, &statbuf->__unused4[0]); | |
262 | err |= __put_user(0, &statbuf->__unused4[1]); | |
263 | ||
264 | return err; | |
265 | } | |
266 | ||
267 | /* Note: it is necessary to treat option as an unsigned int, | |
268 | * with the corresponding cast to a signed int to insure that the | |
269 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
270 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
271 | */ | |
272 | asmlinkage long sys32_sysfs(u32 option, u32 arg1, u32 arg2) | |
273 | { | |
274 | return sys_sysfs((int)option, arg1, arg2); | |
275 | } | |
276 | ||
277 | /* Handle adjtimex compatibility. */ | |
278 | struct timex32 { | |
279 | u32 modes; | |
280 | s32 offset, freq, maxerror, esterror; | |
281 | s32 status, constant, precision, tolerance; | |
282 | struct compat_timeval time; | |
283 | s32 tick; | |
284 | s32 ppsfreq, jitter, shift, stabil; | |
285 | s32 jitcnt, calcnt, errcnt, stbcnt; | |
286 | s32 :32; s32 :32; s32 :32; s32 :32; | |
287 | s32 :32; s32 :32; s32 :32; s32 :32; | |
288 | s32 :32; s32 :32; s32 :32; s32 :32; | |
289 | }; | |
290 | ||
291 | extern int do_adjtimex(struct timex *); | |
292 | extern void ppc_adjtimex(void); | |
293 | ||
294 | asmlinkage long sys32_adjtimex(struct timex32 __user *utp) | |
295 | { | |
296 | struct timex txc; | |
297 | int ret; | |
298 | ||
299 | memset(&txc, 0, sizeof(struct timex)); | |
300 | ||
301 | if(get_user(txc.modes, &utp->modes) || | |
302 | __get_user(txc.offset, &utp->offset) || | |
303 | __get_user(txc.freq, &utp->freq) || | |
304 | __get_user(txc.maxerror, &utp->maxerror) || | |
305 | __get_user(txc.esterror, &utp->esterror) || | |
306 | __get_user(txc.status, &utp->status) || | |
307 | __get_user(txc.constant, &utp->constant) || | |
308 | __get_user(txc.precision, &utp->precision) || | |
309 | __get_user(txc.tolerance, &utp->tolerance) || | |
310 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
311 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
312 | __get_user(txc.tick, &utp->tick) || | |
313 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
314 | __get_user(txc.jitter, &utp->jitter) || | |
315 | __get_user(txc.shift, &utp->shift) || | |
316 | __get_user(txc.stabil, &utp->stabil) || | |
317 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
318 | __get_user(txc.calcnt, &utp->calcnt) || | |
319 | __get_user(txc.errcnt, &utp->errcnt) || | |
320 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
321 | return -EFAULT; | |
322 | ||
323 | ret = do_adjtimex(&txc); | |
324 | ||
325 | /* adjust the conversion of TB to time of day to track adjtimex */ | |
326 | ppc_adjtimex(); | |
327 | ||
328 | if(put_user(txc.modes, &utp->modes) || | |
329 | __put_user(txc.offset, &utp->offset) || | |
330 | __put_user(txc.freq, &utp->freq) || | |
331 | __put_user(txc.maxerror, &utp->maxerror) || | |
332 | __put_user(txc.esterror, &utp->esterror) || | |
333 | __put_user(txc.status, &utp->status) || | |
334 | __put_user(txc.constant, &utp->constant) || | |
335 | __put_user(txc.precision, &utp->precision) || | |
336 | __put_user(txc.tolerance, &utp->tolerance) || | |
337 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
338 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
339 | __put_user(txc.tick, &utp->tick) || | |
340 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
341 | __put_user(txc.jitter, &utp->jitter) || | |
342 | __put_user(txc.shift, &utp->shift) || | |
343 | __put_user(txc.stabil, &utp->stabil) || | |
344 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
345 | __put_user(txc.calcnt, &utp->calcnt) || | |
346 | __put_user(txc.errcnt, &utp->errcnt) || | |
347 | __put_user(txc.stbcnt, &utp->stbcnt)) | |
348 | ret = -EFAULT; | |
349 | ||
350 | return ret; | |
351 | } | |
352 | ||
353 | ||
354 | /* These are here just in case some old sparc32 binary calls it. */ | |
355 | asmlinkage long sys32_pause(void) | |
356 | { | |
357 | current->state = TASK_INTERRUPTIBLE; | |
358 | schedule(); | |
359 | ||
360 | return -ERESTARTNOHAND; | |
361 | } | |
362 | ||
363 | ||
364 | ||
365 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) | |
366 | { | |
367 | long usec; | |
368 | ||
369 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) | |
370 | return -EFAULT; | |
371 | if (__get_user(o->tv_sec, &i->tv_sec)) | |
372 | return -EFAULT; | |
373 | if (__get_user(usec, &i->tv_usec)) | |
374 | return -EFAULT; | |
375 | o->tv_nsec = usec * 1000; | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) | |
380 | { | |
381 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
382 | (__put_user(i->tv_sec, &o->tv_sec) | | |
383 | __put_user(i->tv_usec, &o->tv_usec))); | |
384 | } | |
385 | ||
386 | struct sysinfo32 { | |
387 | s32 uptime; | |
388 | u32 loads[3]; | |
389 | u32 totalram; | |
390 | u32 freeram; | |
391 | u32 sharedram; | |
392 | u32 bufferram; | |
393 | u32 totalswap; | |
394 | u32 freeswap; | |
395 | unsigned short procs; | |
396 | unsigned short pad; | |
397 | u32 totalhigh; | |
398 | u32 freehigh; | |
399 | u32 mem_unit; | |
400 | char _f[20-2*sizeof(int)-sizeof(int)]; | |
401 | }; | |
402 | ||
403 | asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) | |
404 | { | |
405 | struct sysinfo s; | |
406 | int ret, err; | |
407 | int bitcount=0; | |
408 | mm_segment_t old_fs = get_fs (); | |
409 | ||
410 | /* The __user cast is valid due to set_fs() */ | |
411 | set_fs (KERNEL_DS); | |
412 | ret = sys_sysinfo((struct sysinfo __user *)&s); | |
413 | set_fs (old_fs); | |
414 | ||
415 | /* Check to see if any memory value is too large for 32-bit and | |
416 | * scale down if needed. | |
417 | */ | |
418 | if ((s.totalram >> 32) || (s.totalswap >> 32)) { | |
419 | while (s.mem_unit < PAGE_SIZE) { | |
420 | s.mem_unit <<= 1; | |
421 | bitcount++; | |
422 | } | |
423 | s.totalram >>=bitcount; | |
424 | s.freeram >>= bitcount; | |
425 | s.sharedram >>= bitcount; | |
426 | s.bufferram >>= bitcount; | |
427 | s.totalswap >>= bitcount; | |
428 | s.freeswap >>= bitcount; | |
429 | s.totalhigh >>= bitcount; | |
430 | s.freehigh >>= bitcount; | |
431 | } | |
432 | ||
433 | err = put_user (s.uptime, &info->uptime); | |
434 | err |= __put_user (s.loads[0], &info->loads[0]); | |
435 | err |= __put_user (s.loads[1], &info->loads[1]); | |
436 | err |= __put_user (s.loads[2], &info->loads[2]); | |
437 | err |= __put_user (s.totalram, &info->totalram); | |
438 | err |= __put_user (s.freeram, &info->freeram); | |
439 | err |= __put_user (s.sharedram, &info->sharedram); | |
440 | err |= __put_user (s.bufferram, &info->bufferram); | |
441 | err |= __put_user (s.totalswap, &info->totalswap); | |
442 | err |= __put_user (s.freeswap, &info->freeswap); | |
443 | err |= __put_user (s.procs, &info->procs); | |
444 | err |= __put_user (s.totalhigh, &info->totalhigh); | |
445 | err |= __put_user (s.freehigh, &info->freehigh); | |
446 | err |= __put_user (s.mem_unit, &info->mem_unit); | |
447 | if (err) | |
448 | return -EFAULT; | |
449 | ||
450 | return ret; | |
451 | } | |
452 | ||
453 | ||
454 | ||
455 | ||
456 | /* Translations due to time_t size differences. Which affects all | |
457 | sorts of things, like timeval and itimerval. */ | |
458 | extern struct timezone sys_tz; | |
459 | ||
460 | asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) | |
461 | { | |
462 | if (tv) { | |
463 | struct timeval ktv; | |
464 | do_gettimeofday(&ktv); | |
465 | if (put_tv32(tv, &ktv)) | |
466 | return -EFAULT; | |
467 | } | |
468 | if (tz) { | |
469 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
470 | return -EFAULT; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | ||
477 | ||
478 | asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) | |
479 | { | |
480 | struct timespec kts; | |
481 | struct timezone ktz; | |
482 | ||
483 | if (tv) { | |
484 | if (get_ts32(&kts, tv)) | |
485 | return -EFAULT; | |
486 | } | |
487 | if (tz) { | |
488 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
489 | return -EFAULT; | |
490 | } | |
491 | ||
492 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
493 | } | |
494 | ||
495 | #ifdef CONFIG_SYSVIPC | |
496 | long sys32_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, | |
497 | u32 fifth) | |
498 | { | |
499 | int version; | |
500 | ||
501 | version = call >> 16; /* hack for backward compatibility */ | |
502 | call &= 0xffff; | |
503 | ||
504 | switch (call) { | |
505 | ||
506 | case SEMTIMEDOP: | |
507 | if (fifth) | |
508 | /* sign extend semid */ | |
509 | return compat_sys_semtimedop((int)first, | |
510 | compat_ptr(ptr), second, | |
511 | compat_ptr(fifth)); | |
512 | /* else fall through for normal semop() */ | |
513 | case SEMOP: | |
514 | /* struct sembuf is the same on 32 and 64bit :)) */ | |
515 | /* sign extend semid */ | |
516 | return sys_semtimedop((int)first, compat_ptr(ptr), second, | |
517 | NULL); | |
518 | case SEMGET: | |
519 | /* sign extend key, nsems */ | |
520 | return sys_semget((int)first, (int)second, third); | |
521 | case SEMCTL: | |
522 | /* sign extend semid, semnum */ | |
523 | return compat_sys_semctl((int)first, (int)second, third, | |
524 | compat_ptr(ptr)); | |
525 | ||
526 | case MSGSND: | |
527 | /* sign extend msqid */ | |
528 | return compat_sys_msgsnd((int)first, (int)second, third, | |
529 | compat_ptr(ptr)); | |
530 | case MSGRCV: | |
531 | /* sign extend msqid, msgtyp */ | |
532 | return compat_sys_msgrcv((int)first, second, (int)fifth, | |
533 | third, version, compat_ptr(ptr)); | |
534 | case MSGGET: | |
535 | /* sign extend key */ | |
536 | return sys_msgget((int)first, second); | |
537 | case MSGCTL: | |
538 | /* sign extend msqid */ | |
539 | return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); | |
540 | ||
541 | case SHMAT: | |
542 | /* sign extend shmid */ | |
543 | return compat_sys_shmat((int)first, second, third, version, | |
544 | compat_ptr(ptr)); | |
545 | case SHMDT: | |
546 | return sys_shmdt(compat_ptr(ptr)); | |
547 | case SHMGET: | |
548 | /* sign extend key_t */ | |
549 | return sys_shmget((int)first, second, third); | |
550 | case SHMCTL: | |
551 | /* sign extend shmid */ | |
552 | return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); | |
553 | ||
554 | default: | |
555 | return -ENOSYS; | |
556 | } | |
557 | ||
558 | return -ENOSYS; | |
559 | } | |
560 | #endif | |
561 | ||
562 | /* Note: it is necessary to treat out_fd and in_fd as unsigned ints, | |
563 | * with the corresponding cast to a signed int to insure that the | |
564 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
565 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
566 | */ | |
567 | asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count) | |
568 | { | |
569 | mm_segment_t old_fs = get_fs(); | |
570 | int ret; | |
571 | off_t of; | |
572 | off_t __user *up; | |
573 | ||
574 | if (offset && get_user(of, offset)) | |
575 | return -EFAULT; | |
576 | ||
577 | /* The __user pointer cast is valid because of the set_fs() */ | |
578 | set_fs(KERNEL_DS); | |
579 | up = offset ? (off_t __user *) &of : NULL; | |
580 | ret = sys_sendfile((int)out_fd, (int)in_fd, up, count); | |
581 | set_fs(old_fs); | |
582 | ||
583 | if (offset && put_user(of, offset)) | |
584 | return -EFAULT; | |
585 | ||
586 | return ret; | |
587 | } | |
588 | ||
589 | asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count) | |
590 | { | |
591 | mm_segment_t old_fs = get_fs(); | |
592 | int ret; | |
593 | loff_t lof; | |
594 | loff_t __user *up; | |
595 | ||
596 | if (offset && get_user(lof, offset)) | |
597 | return -EFAULT; | |
598 | ||
599 | /* The __user pointer cast is valid because of the set_fs() */ | |
600 | set_fs(KERNEL_DS); | |
601 | up = offset ? (loff_t __user *) &lof : NULL; | |
602 | ret = sys_sendfile64(out_fd, in_fd, up, count); | |
603 | set_fs(old_fs); | |
604 | ||
605 | if (offset && put_user(lof, offset)) | |
606 | return -EFAULT; | |
607 | ||
608 | return ret; | |
609 | } | |
610 | ||
611 | long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2, | |
612 | unsigned long a3, unsigned long a4, unsigned long a5, | |
613 | struct pt_regs *regs) | |
614 | { | |
615 | int error; | |
616 | char * filename; | |
617 | ||
618 | filename = getname((char __user *) a0); | |
619 | error = PTR_ERR(filename); | |
620 | if (IS_ERR(filename)) | |
621 | goto out; | |
622 | flush_fp_to_thread(current); | |
623 | flush_altivec_to_thread(current); | |
624 | ||
625 | error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs); | |
626 | ||
627 | if (error == 0) { | |
628 | task_lock(current); | |
629 | current->ptrace &= ~PT_DTRACE; | |
630 | task_unlock(current); | |
631 | } | |
632 | putname(filename); | |
633 | ||
634 | out: | |
635 | return error; | |
636 | } | |
637 | ||
638 | /* Set up a thread for executing a new program. */ | |
639 | void start_thread32(struct pt_regs* regs, unsigned long nip, unsigned long sp) | |
640 | { | |
641 | set_fs(USER_DS); | |
642 | ||
643 | /* | |
644 | * If we exec out of a kernel thread then thread.regs will not be | |
645 | * set. Do it now. | |
646 | */ | |
647 | if (!current->thread.regs) { | |
648 | unsigned long childregs = (unsigned long)current->thread_info + | |
649 | THREAD_SIZE; | |
650 | childregs -= sizeof(struct pt_regs); | |
651 | current->thread.regs = (struct pt_regs *)childregs; | |
652 | } | |
653 | ||
654 | /* | |
655 | * ELF_PLAT_INIT already clears all registers but it also sets r2. | |
656 | * So just clear r2 here. | |
657 | */ | |
658 | regs->gpr[2] = 0; | |
659 | ||
660 | regs->nip = nip; | |
661 | regs->gpr[1] = sp; | |
662 | regs->msr = MSR_USER32; | |
663 | #ifndef CONFIG_SMP | |
664 | if (last_task_used_math == current) | |
665 | last_task_used_math = 0; | |
666 | #endif /* CONFIG_SMP */ | |
667 | current->thread.fpscr = 0; | |
668 | memset(current->thread.fpr, 0, sizeof(current->thread.fpr)); | |
669 | #ifdef CONFIG_ALTIVEC | |
670 | #ifndef CONFIG_SMP | |
671 | if (last_task_used_altivec == current) | |
672 | last_task_used_altivec = 0; | |
673 | #endif /* CONFIG_SMP */ | |
674 | memset(current->thread.vr, 0, sizeof(current->thread.vr)); | |
675 | current->thread.vscr.u[0] = 0; | |
676 | current->thread.vscr.u[1] = 0; | |
677 | current->thread.vscr.u[2] = 0; | |
678 | current->thread.vscr.u[3] = 0x00010000; /* Java mode disabled */ | |
679 | current->thread.vrsave = 0; | |
680 | current->thread.used_vr = 0; | |
681 | #endif /* CONFIG_ALTIVEC */ | |
682 | } | |
683 | ||
684 | /* Note: it is necessary to treat option as an unsigned int, | |
685 | * with the corresponding cast to a signed int to insure that the | |
686 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
687 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
688 | */ | |
689 | asmlinkage long sys32_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5) | |
690 | { | |
691 | return sys_prctl((int)option, | |
692 | (unsigned long) arg2, | |
693 | (unsigned long) arg3, | |
694 | (unsigned long) arg4, | |
695 | (unsigned long) arg5); | |
696 | } | |
697 | ||
698 | /* Note: it is necessary to treat pid as an unsigned int, | |
699 | * with the corresponding cast to a signed int to insure that the | |
700 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
701 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
702 | */ | |
703 | asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval) | |
704 | { | |
705 | struct timespec t; | |
706 | int ret; | |
707 | mm_segment_t old_fs = get_fs (); | |
708 | ||
709 | /* The __user pointer cast is valid because of the set_fs() */ | |
710 | set_fs (KERNEL_DS); | |
711 | ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t); | |
712 | set_fs (old_fs); | |
713 | if (put_compat_timespec(&t, interval)) | |
714 | return -EFAULT; | |
715 | return ret; | |
716 | } | |
717 | ||
718 | asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) | |
719 | { | |
720 | return sys_pciconfig_read((unsigned long) bus, | |
721 | (unsigned long) dfn, | |
722 | (unsigned long) off, | |
723 | (unsigned long) len, | |
724 | compat_ptr(ubuf)); | |
725 | } | |
726 | ||
727 | asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf) | |
728 | { | |
729 | return sys_pciconfig_write((unsigned long) bus, | |
730 | (unsigned long) dfn, | |
731 | (unsigned long) off, | |
732 | (unsigned long) len, | |
733 | compat_ptr(ubuf)); | |
734 | } | |
735 | ||
736 | #define IOBASE_BRIDGE_NUMBER 0 | |
737 | #define IOBASE_MEMORY 1 | |
738 | #define IOBASE_IO 2 | |
739 | #define IOBASE_ISA_IO 3 | |
740 | #define IOBASE_ISA_MEM 4 | |
741 | ||
742 | asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn) | |
743 | { | |
744 | struct pci_controller* hose; | |
745 | struct list_head *ln; | |
746 | struct pci_bus *bus = NULL; | |
747 | struct device_node *hose_node; | |
748 | ||
749 | /* Argh ! Please forgive me for that hack, but that's the | |
750 | * simplest way to get existing XFree to not lockup on some | |
751 | * G5 machines... So when something asks for bus 0 io base | |
752 | * (bus 0 is HT root), we return the AGP one instead. | |
753 | */ | |
754 | #ifdef CONFIG_PPC_PMAC | |
755 | if (systemcfg->platform == PLATFORM_POWERMAC && | |
756 | machine_is_compatible("MacRISC4")) | |
757 | if (in_bus == 0) | |
758 | in_bus = 0xf0; | |
759 | #endif /* CONFIG_PPC_PMAC */ | |
760 | ||
761 | /* That syscall isn't quite compatible with PCI domains, but it's | |
762 | * used on pre-domains setup. We return the first match | |
763 | */ | |
764 | ||
765 | for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) { | |
766 | bus = pci_bus_b(ln); | |
767 | if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate)) | |
768 | break; | |
769 | bus = NULL; | |
770 | } | |
771 | if (bus == NULL || bus->sysdata == NULL) | |
772 | return -ENODEV; | |
773 | ||
774 | hose_node = (struct device_node *)bus->sysdata; | |
775 | hose = hose_node->phb; | |
776 | ||
777 | switch (which) { | |
778 | case IOBASE_BRIDGE_NUMBER: | |
779 | return (long)hose->first_busno; | |
780 | case IOBASE_MEMORY: | |
781 | return (long)hose->pci_mem_offset; | |
782 | case IOBASE_IO: | |
783 | return (long)hose->io_base_phys; | |
784 | case IOBASE_ISA_IO: | |
785 | return (long)isa_io_base; | |
786 | case IOBASE_ISA_MEM: | |
787 | return -EINVAL; | |
788 | } | |
789 | ||
790 | return -EOPNOTSUPP; | |
791 | } | |
792 | ||
793 | ||
794 | asmlinkage int ppc64_newuname(struct new_utsname __user * name) | |
795 | { | |
796 | int errno = sys_newuname(name); | |
797 | ||
798 | if (current->personality == PER_LINUX32 && !errno) { | |
799 | if(copy_to_user(name->machine, "ppc\0\0", 8)) { | |
800 | errno = -EFAULT; | |
801 | } | |
802 | } | |
803 | return errno; | |
804 | } | |
805 | ||
806 | asmlinkage int ppc64_personality(unsigned long personality) | |
807 | { | |
808 | int ret; | |
809 | if (current->personality == PER_LINUX32 && personality == PER_LINUX) | |
810 | personality = PER_LINUX32; | |
811 | ret = sys_personality(personality); | |
812 | if (ret == PER_LINUX32) | |
813 | ret = PER_LINUX; | |
814 | return ret; | |
815 | } | |
816 | ||
817 | ||
818 | ||
819 | /* Note: it is necessary to treat mode as an unsigned int, | |
820 | * with the corresponding cast to a signed int to insure that the | |
821 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
822 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
823 | */ | |
824 | asmlinkage long sys32_access(const char __user * filename, u32 mode) | |
825 | { | |
826 | return sys_access(filename, (int)mode); | |
827 | } | |
828 | ||
829 | ||
830 | /* Note: it is necessary to treat mode as an unsigned int, | |
831 | * with the corresponding cast to a signed int to insure that the | |
832 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
833 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
834 | */ | |
835 | asmlinkage long sys32_creat(const char __user * pathname, u32 mode) | |
836 | { | |
837 | return sys_creat(pathname, (int)mode); | |
838 | } | |
839 | ||
840 | ||
841 | /* Note: it is necessary to treat pid and options as unsigned ints, | |
842 | * with the corresponding cast to a signed int to insure that the | |
843 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
844 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
845 | */ | |
846 | asmlinkage long sys32_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options) | |
847 | { | |
848 | return sys_waitpid((int)pid, stat_addr, (int)options); | |
849 | } | |
850 | ||
851 | ||
852 | /* Note: it is necessary to treat gidsetsize as an unsigned int, | |
853 | * with the corresponding cast to a signed int to insure that the | |
854 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
855 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
856 | */ | |
857 | asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t __user *grouplist) | |
858 | { | |
859 | return sys_getgroups((int)gidsetsize, grouplist); | |
860 | } | |
861 | ||
862 | ||
863 | /* Note: it is necessary to treat pid as an unsigned int, | |
864 | * with the corresponding cast to a signed int to insure that the | |
865 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
866 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
867 | */ | |
868 | asmlinkage long sys32_getpgid(u32 pid) | |
869 | { | |
870 | return sys_getpgid((int)pid); | |
871 | } | |
872 | ||
873 | ||
874 | /* Note: it is necessary to treat which and who as unsigned ints, | |
875 | * with the corresponding cast to a signed int to insure that the | |
876 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
877 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
878 | */ | |
879 | asmlinkage long sys32_getpriority(u32 which, u32 who) | |
880 | { | |
881 | return sys_getpriority((int)which, (int)who); | |
882 | } | |
883 | ||
884 | ||
885 | /* Note: it is necessary to treat pid as an unsigned int, | |
886 | * with the corresponding cast to a signed int to insure that the | |
887 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
888 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
889 | */ | |
890 | asmlinkage long sys32_getsid(u32 pid) | |
891 | { | |
892 | return sys_getsid((int)pid); | |
893 | } | |
894 | ||
895 | ||
896 | /* Note: it is necessary to treat pid and sig as unsigned ints, | |
897 | * with the corresponding cast to a signed int to insure that the | |
898 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
899 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
900 | */ | |
901 | asmlinkage long sys32_kill(u32 pid, u32 sig) | |
902 | { | |
903 | return sys_kill((int)pid, (int)sig); | |
904 | } | |
905 | ||
906 | ||
907 | /* Note: it is necessary to treat mode as an unsigned int, | |
908 | * with the corresponding cast to a signed int to insure that the | |
909 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
910 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
911 | */ | |
912 | asmlinkage long sys32_mkdir(const char __user * pathname, u32 mode) | |
913 | { | |
914 | return sys_mkdir(pathname, (int)mode); | |
915 | } | |
916 | ||
917 | long sys32_nice(u32 increment) | |
918 | { | |
919 | /* sign extend increment */ | |
920 | return sys_nice((int)increment); | |
921 | } | |
922 | ||
923 | off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin) | |
924 | { | |
925 | /* sign extend n */ | |
926 | return sys_lseek(fd, (int)offset, origin); | |
927 | } | |
928 | ||
929 | /* | |
930 | * This is just a version for 32-bit applications which does | |
931 | * not force O_LARGEFILE on. | |
932 | */ | |
933 | asmlinkage long sys32_open(const char __user * filename, int flags, int mode) | |
934 | { | |
935 | char * tmp; | |
936 | int fd, error; | |
937 | ||
938 | tmp = getname(filename); | |
939 | fd = PTR_ERR(tmp); | |
940 | if (!IS_ERR(tmp)) { | |
941 | fd = get_unused_fd(); | |
942 | if (fd >= 0) { | |
943 | struct file * f = filp_open(tmp, flags, mode); | |
944 | error = PTR_ERR(f); | |
945 | if (IS_ERR(f)) | |
946 | goto out_error; | |
947 | fd_install(fd, f); | |
948 | } | |
949 | out: | |
950 | putname(tmp); | |
951 | } | |
952 | return fd; | |
953 | ||
954 | out_error: | |
955 | put_unused_fd(fd); | |
956 | fd = error; | |
957 | goto out; | |
958 | } | |
959 | ||
960 | /* Note: it is necessary to treat bufsiz as an unsigned int, | |
961 | * with the corresponding cast to a signed int to insure that the | |
962 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
963 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
964 | */ | |
965 | asmlinkage long sys32_readlink(const char __user * path, char __user * buf, u32 bufsiz) | |
966 | { | |
967 | return sys_readlink(path, buf, (int)bufsiz); | |
968 | } | |
969 | ||
970 | /* Note: it is necessary to treat option as an unsigned int, | |
971 | * with the corresponding cast to a signed int to insure that the | |
972 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
973 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
974 | */ | |
975 | asmlinkage long sys32_sched_get_priority_max(u32 policy) | |
976 | { | |
977 | return sys_sched_get_priority_max((int)policy); | |
978 | } | |
979 | ||
980 | ||
981 | /* Note: it is necessary to treat policy as an unsigned int, | |
982 | * with the corresponding cast to a signed int to insure that the | |
983 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
984 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
985 | */ | |
986 | asmlinkage long sys32_sched_get_priority_min(u32 policy) | |
987 | { | |
988 | return sys_sched_get_priority_min((int)policy); | |
989 | } | |
990 | ||
991 | ||
992 | /* Note: it is necessary to treat pid as an unsigned int, | |
993 | * with the corresponding cast to a signed int to insure that the | |
994 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
995 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
996 | */ | |
997 | asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param __user *param) | |
998 | { | |
999 | return sys_sched_getparam((int)pid, param); | |
1000 | } | |
1001 | ||
1002 | ||
1003 | /* Note: it is necessary to treat pid as an unsigned int, | |
1004 | * with the corresponding cast to a signed int to insure that the | |
1005 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1006 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1007 | */ | |
1008 | asmlinkage long sys32_sched_getscheduler(u32 pid) | |
1009 | { | |
1010 | return sys_sched_getscheduler((int)pid); | |
1011 | } | |
1012 | ||
1013 | ||
1014 | /* Note: it is necessary to treat pid as an unsigned int, | |
1015 | * with the corresponding cast to a signed int to insure that the | |
1016 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1017 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1018 | */ | |
1019 | asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param __user *param) | |
1020 | { | |
1021 | return sys_sched_setparam((int)pid, param); | |
1022 | } | |
1023 | ||
1024 | ||
1025 | /* Note: it is necessary to treat pid and policy as unsigned ints, | |
1026 | * with the corresponding cast to a signed int to insure that the | |
1027 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1028 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1029 | */ | |
1030 | asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param) | |
1031 | { | |
1032 | return sys_sched_setscheduler((int)pid, (int)policy, param); | |
1033 | } | |
1034 | ||
1035 | ||
1036 | /* Note: it is necessary to treat len as an unsigned int, | |
1037 | * with the corresponding cast to a signed int to insure that the | |
1038 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1039 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1040 | */ | |
1041 | asmlinkage long sys32_setdomainname(char __user *name, u32 len) | |
1042 | { | |
1043 | return sys_setdomainname(name, (int)len); | |
1044 | } | |
1045 | ||
1046 | ||
1047 | /* Note: it is necessary to treat gidsetsize as an unsigned int, | |
1048 | * with the corresponding cast to a signed int to insure that the | |
1049 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1050 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1051 | */ | |
1052 | asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t __user *grouplist) | |
1053 | { | |
1054 | return sys_setgroups((int)gidsetsize, grouplist); | |
1055 | } | |
1056 | ||
1057 | ||
1058 | asmlinkage long sys32_sethostname(char __user *name, u32 len) | |
1059 | { | |
1060 | /* sign extend len */ | |
1061 | return sys_sethostname(name, (int)len); | |
1062 | } | |
1063 | ||
1064 | ||
1065 | /* Note: it is necessary to treat pid and pgid as unsigned ints, | |
1066 | * with the corresponding cast to a signed int to insure that the | |
1067 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1068 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1069 | */ | |
1070 | asmlinkage long sys32_setpgid(u32 pid, u32 pgid) | |
1071 | { | |
1072 | return sys_setpgid((int)pid, (int)pgid); | |
1073 | } | |
1074 | ||
1075 | ||
1076 | long sys32_setpriority(u32 which, u32 who, u32 niceval) | |
1077 | { | |
1078 | /* sign extend which, who and niceval */ | |
1079 | return sys_setpriority((int)which, (int)who, (int)niceval); | |
1080 | } | |
1081 | ||
1082 | /* Note: it is necessary to treat newmask as an unsigned int, | |
1083 | * with the corresponding cast to a signed int to insure that the | |
1084 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1085 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1086 | */ | |
1087 | asmlinkage long sys32_ssetmask(u32 newmask) | |
1088 | { | |
1089 | return sys_ssetmask((int) newmask); | |
1090 | } | |
1091 | ||
1092 | asmlinkage long sys32_syslog(u32 type, char __user * buf, u32 len) | |
1093 | { | |
1094 | /* sign extend len */ | |
1095 | return sys_syslog(type, buf, (int)len); | |
1096 | } | |
1097 | ||
1098 | ||
1099 | /* Note: it is necessary to treat mask as an unsigned int, | |
1100 | * with the corresponding cast to a signed int to insure that the | |
1101 | * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode) | |
1102 | * and the register representation of a signed int (msr in 64-bit mode) is performed. | |
1103 | */ | |
1104 | asmlinkage long sys32_umask(u32 mask) | |
1105 | { | |
1106 | return sys_umask((int)mask); | |
1107 | } | |
1108 | ||
1109 | #ifdef CONFIG_SYSCTL | |
1110 | struct __sysctl_args32 { | |
1111 | u32 name; | |
1112 | int nlen; | |
1113 | u32 oldval; | |
1114 | u32 oldlenp; | |
1115 | u32 newval; | |
1116 | u32 newlen; | |
1117 | u32 __unused[4]; | |
1118 | }; | |
1119 | ||
1120 | asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) | |
1121 | { | |
1122 | struct __sysctl_args32 tmp; | |
1123 | int error; | |
1124 | size_t oldlen; | |
1125 | size_t __user *oldlenp = NULL; | |
1126 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; | |
1127 | ||
1128 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
1129 | return -EFAULT; | |
1130 | ||
1131 | if (tmp.oldval && tmp.oldlenp) { | |
1132 | /* Duh, this is ugly and might not work if sysctl_args | |
1133 | is in read-only memory, but do_sysctl does indirectly | |
1134 | a lot of uaccess in both directions and we'd have to | |
1135 | basically copy the whole sysctl.c here, and | |
1136 | glibc's __sysctl uses rw memory for the structure | |
1137 | anyway. */ | |
1138 | oldlenp = (size_t __user *)addr; | |
1139 | if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) || | |
1140 | put_user(oldlen, oldlenp)) | |
1141 | return -EFAULT; | |
1142 | } | |
1143 | ||
1144 | lock_kernel(); | |
1145 | error = do_sysctl(compat_ptr(tmp.name), tmp.nlen, | |
1146 | compat_ptr(tmp.oldval), oldlenp, | |
1147 | compat_ptr(tmp.newval), tmp.newlen); | |
1148 | unlock_kernel(); | |
1149 | if (oldlenp) { | |
1150 | if (!error) { | |
1151 | if (get_user(oldlen, oldlenp) || | |
1152 | put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp))) | |
1153 | error = -EFAULT; | |
1154 | } | |
1155 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); | |
1156 | } | |
1157 | return error; | |
1158 | } | |
1159 | #endif | |
1160 | ||
1161 | asmlinkage int sys32_olduname(struct oldold_utsname __user * name) | |
1162 | { | |
1163 | int error; | |
1164 | ||
1165 | if (!name) | |
1166 | return -EFAULT; | |
1167 | if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname))) | |
1168 | return -EFAULT; | |
1169 | ||
1170 | down_read(&uts_sem); | |
1171 | error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN); | |
1172 | error -= __put_user(0,name->sysname+__OLD_UTS_LEN); | |
1173 | error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN); | |
1174 | error -= __put_user(0,name->nodename+__OLD_UTS_LEN); | |
1175 | error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN); | |
1176 | error -= __put_user(0,name->release+__OLD_UTS_LEN); | |
1177 | error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN); | |
1178 | error -= __put_user(0,name->version+__OLD_UTS_LEN); | |
1179 | error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN); | |
1180 | error = __put_user(0,name->machine+__OLD_UTS_LEN); | |
1181 | up_read(&uts_sem); | |
1182 | ||
1183 | error = error ? -EFAULT : 0; | |
1184 | ||
1185 | return error; | |
1186 | } | |
1187 | ||
1188 | unsigned long sys32_mmap2(unsigned long addr, size_t len, | |
1189 | unsigned long prot, unsigned long flags, | |
1190 | unsigned long fd, unsigned long pgoff) | |
1191 | { | |
1192 | /* This should remain 12 even if PAGE_SIZE changes */ | |
1193 | return sys_mmap(addr, len, prot, flags, fd, pgoff << 12); | |
1194 | } | |
1195 | ||
1196 | int get_compat_timeval(struct timeval *tv, struct compat_timeval __user *ctv) | |
1197 | { | |
1198 | return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) || | |
1199 | __get_user(tv->tv_sec, &ctv->tv_sec) || | |
1200 | __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0; | |
1201 | } | |
1202 | ||
1203 | asmlinkage long sys32_utimes(char __user *filename, struct compat_timeval __user *tvs) | |
1204 | { | |
1205 | struct timeval ktvs[2], *ptr; | |
1206 | ||
1207 | ptr = NULL; | |
1208 | if (tvs) { | |
1209 | if (get_compat_timeval(&ktvs[0], &tvs[0]) || | |
1210 | get_compat_timeval(&ktvs[1], &tvs[1])) | |
1211 | return -EFAULT; | |
1212 | ptr = ktvs; | |
1213 | } | |
1214 | ||
1215 | return do_utimes(filename, ptr); | |
1216 | } | |
1217 | ||
1218 | long sys32_tgkill(u32 tgid, u32 pid, int sig) | |
1219 | { | |
1220 | /* sign extend tgid, pid */ | |
1221 | return sys_tgkill((int)tgid, (int)pid, sig); | |
1222 | } | |
1223 | ||
1224 | /* | |
1225 | * long long munging: | |
1226 | * The 32 bit ABI passes long longs in an odd even register pair. | |
1227 | */ | |
1228 | ||
1229 | compat_ssize_t sys32_pread64(unsigned int fd, char __user *ubuf, compat_size_t count, | |
1230 | u32 reg6, u32 poshi, u32 poslo) | |
1231 | { | |
1232 | return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); | |
1233 | } | |
1234 | ||
1235 | compat_ssize_t sys32_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count, | |
1236 | u32 reg6, u32 poshi, u32 poslo) | |
1237 | { | |
1238 | return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo); | |
1239 | } | |
1240 | ||
1241 | compat_ssize_t sys32_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count) | |
1242 | { | |
1243 | return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count); | |
1244 | } | |
1245 | ||
1246 | asmlinkage int sys32_truncate64(const char __user * path, u32 reg4, | |
1247 | unsigned long high, unsigned long low) | |
1248 | { | |
1249 | return sys_truncate(path, (high << 32) | low); | |
1250 | } | |
1251 | ||
1252 | asmlinkage int sys32_ftruncate64(unsigned int fd, u32 reg4, unsigned long high, | |
1253 | unsigned long low) | |
1254 | { | |
1255 | return sys_ftruncate(fd, (high << 32) | low); | |
1256 | } | |
1257 | ||
1258 | long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf, | |
1259 | size_t len) | |
1260 | { | |
1261 | return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low, | |
1262 | buf, len); | |
1263 | } | |
1264 | ||
1265 | long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low, | |
1266 | size_t len, int advice) | |
1267 | { | |
1268 | return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len, | |
1269 | advice); | |
1270 | } | |
1271 | ||
1272 | long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low, | |
1273 | u32 len_high, u32 len_low) | |
1274 | { | |
1275 | return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, | |
1276 | (u64)len_high << 32 | len_low, advice); | |
1277 | } | |
1278 | ||
1279 | extern asmlinkage long sys_timer_create(clockid_t, sigevent_t __user *, timer_t __user *); | |
1280 | ||
1281 | long ppc32_timer_create(clockid_t clock, | |
1282 | struct compat_sigevent __user *ev32, | |
1283 | timer_t __user *timer_id) | |
1284 | { | |
1285 | sigevent_t event; | |
1286 | timer_t t; | |
1287 | long err; | |
1288 | mm_segment_t savefs; | |
1289 | ||
1290 | if (ev32 == NULL) | |
1291 | return sys_timer_create(clock, NULL, timer_id); | |
1292 | ||
1293 | if (get_compat_sigevent(&event, ev32)) | |
1294 | return -EFAULT; | |
1295 | ||
1296 | if (!access_ok(VERIFY_WRITE, timer_id, sizeof(timer_t))) | |
1297 | return -EFAULT; | |
1298 | ||
1299 | savefs = get_fs(); | |
1300 | set_fs(KERNEL_DS); | |
1301 | /* The __user pointer casts are valid due to the set_fs() */ | |
1302 | err = sys_timer_create(clock, | |
1303 | (sigevent_t __user *) &event, | |
1304 | (timer_t __user *) &t); | |
1305 | set_fs(savefs); | |
1306 | ||
1307 | if (err == 0) | |
1308 | err = __put_user(t, timer_id); | |
1309 | ||
1310 | return err; | |
1311 | } | |
1312 | ||
1313 | asmlinkage long sys32_add_key(const char __user *_type, | |
1314 | const char __user *_description, | |
1315 | const void __user *_payload, | |
1316 | u32 plen, | |
1317 | u32 ringid) | |
1318 | { | |
1319 | return sys_add_key(_type, _description, _payload, plen, ringid); | |
1320 | } | |
1321 | ||
1322 | asmlinkage long sys32_request_key(const char __user *_type, | |
1323 | const char __user *_description, | |
1324 | const char __user *_callout_info, | |
1325 | u32 destringid) | |
1326 | { | |
1327 | return sys_request_key(_type, _description, _callout_info, destringid); | |
1328 | } | |
1329 |