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Commit | Line | Data |
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1 | /* | |
2 | * file related system call shims and definitions | |
3 | * | |
4 | * Copyright (c) 2013 Stacey D. Son | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef BSD_FILE_H | |
21 | #define BSD_FILE_H | |
22 | ||
23 | #include "qemu/path.h" | |
24 | ||
25 | #define LOCK_PATH(p, arg) \ | |
26 | do { \ | |
27 | (p) = lock_user_string(arg); \ | |
28 | if ((p) == NULL) { \ | |
29 | return -TARGET_EFAULT; \ | |
30 | } \ | |
31 | } while (0) | |
32 | ||
33 | #define UNLOCK_PATH(p, arg) unlock_user(p, arg, 0) | |
34 | ||
35 | #define LOCK_PATH2(p1, arg1, p2, arg2) \ | |
36 | do { \ | |
37 | (p1) = lock_user_string(arg1); \ | |
38 | if ((p1) == NULL) { \ | |
39 | return -TARGET_EFAULT; \ | |
40 | } \ | |
41 | (p2) = lock_user_string(arg2); \ | |
42 | if ((p2) == NULL) { \ | |
43 | unlock_user(p1, arg1, 0); \ | |
44 | return -TARGET_EFAULT; \ | |
45 | } \ | |
46 | } while (0) | |
47 | ||
48 | #define UNLOCK_PATH2(p1, arg1, p2, arg2) \ | |
49 | do { \ | |
50 | unlock_user(p2, arg2, 0); \ | |
51 | unlock_user(p1, arg1, 0); \ | |
52 | } while (0) | |
53 | ||
54 | struct iovec *lock_iovec(int type, abi_ulong target_addr, int count, int copy); | |
55 | void unlock_iovec(struct iovec *vec, abi_ulong target_addr, int count, int copy); | |
56 | ||
57 | int safe_open(const char *path, int flags, mode_t mode); | |
58 | int safe_openat(int fd, const char *path, int flags, mode_t mode); | |
59 | ||
60 | ssize_t safe_read(int fd, void *buf, size_t nbytes); | |
61 | ssize_t safe_pread(int fd, void *buf, size_t nbytes, off_t offset); | |
62 | ssize_t safe_readv(int fd, const struct iovec *iov, int iovcnt); | |
63 | ssize_t safe_preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset); | |
64 | ||
65 | ssize_t safe_write(int fd, void *buf, size_t nbytes); | |
66 | ssize_t safe_pwrite(int fd, void *buf, size_t nbytes, off_t offset); | |
67 | ssize_t safe_writev(int fd, const struct iovec *iov, int iovcnt); | |
68 | ssize_t safe_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset); | |
69 | ||
70 | /* read(2) */ | |
71 | static abi_long do_bsd_read(abi_long arg1, abi_long arg2, abi_long arg3) | |
72 | { | |
73 | abi_long ret; | |
74 | void *p; | |
75 | ||
76 | p = lock_user(VERIFY_WRITE, arg2, arg3, 0); | |
77 | if (p == NULL) { | |
78 | return -TARGET_EFAULT; | |
79 | } | |
80 | ret = get_errno(safe_read(arg1, p, arg3)); | |
81 | unlock_user(p, arg2, ret); | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
86 | /* pread(2) */ | |
87 | static abi_long do_bsd_pread(void *cpu_env, abi_long arg1, | |
88 | abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6) | |
89 | { | |
90 | abi_long ret; | |
91 | void *p; | |
92 | ||
93 | p = lock_user(VERIFY_WRITE, arg2, arg3, 0); | |
94 | if (p == NULL) { | |
95 | return -TARGET_EFAULT; | |
96 | } | |
97 | if (regpairs_aligned(cpu_env) != 0) { | |
98 | arg4 = arg5; | |
99 | arg5 = arg6; | |
100 | } | |
101 | ret = get_errno(safe_pread(arg1, p, arg3, target_arg64(arg4, arg5))); | |
102 | unlock_user(p, arg2, ret); | |
103 | ||
104 | return ret; | |
105 | } | |
106 | ||
107 | /* readv(2) */ | |
108 | static abi_long do_bsd_readv(abi_long arg1, abi_long arg2, abi_long arg3) | |
109 | { | |
110 | abi_long ret; | |
111 | struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); | |
112 | ||
113 | if (vec != NULL) { | |
114 | ret = get_errno(safe_readv(arg1, vec, arg3)); | |
115 | unlock_iovec(vec, arg2, arg3, 1); | |
116 | } else { | |
117 | ret = -host_to_target_errno(errno); | |
118 | } | |
119 | ||
120 | return ret; | |
121 | } | |
122 | ||
123 | /* preadv(2) */ | |
124 | static abi_long do_bsd_preadv(void *cpu_env, abi_long arg1, | |
125 | abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6) | |
126 | { | |
127 | abi_long ret; | |
128 | struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 1); | |
129 | ||
130 | if (vec != NULL) { | |
131 | if (regpairs_aligned(cpu_env) != 0) { | |
132 | arg4 = arg5; | |
133 | arg5 = arg6; | |
134 | } | |
135 | ret = get_errno(safe_preadv(arg1, vec, arg3, target_arg64(arg4, arg5))); | |
136 | unlock_iovec(vec, arg2, arg3, 0); | |
137 | } else { | |
138 | ret = -host_to_target_errno(errno); | |
139 | } | |
140 | ||
141 | return ret; | |
142 | } | |
143 | ||
144 | /* write(2) */ | |
145 | static abi_long do_bsd_write(abi_long arg1, abi_long arg2, abi_long arg3) | |
146 | { | |
147 | abi_long nbytes, ret; | |
148 | void *p; | |
149 | ||
150 | /* nbytes < 0 implies that it was larger than SIZE_MAX. */ | |
151 | nbytes = arg3; | |
152 | if (nbytes < 0) { | |
153 | return -TARGET_EINVAL; | |
154 | } | |
155 | p = lock_user(VERIFY_READ, arg2, nbytes, 1); | |
156 | if (p == NULL) { | |
157 | return -TARGET_EFAULT; | |
158 | } | |
159 | ret = get_errno(safe_write(arg1, p, arg3)); | |
160 | unlock_user(p, arg2, 0); | |
161 | ||
162 | return ret; | |
163 | } | |
164 | ||
165 | /* pwrite(2) */ | |
166 | static abi_long do_bsd_pwrite(void *cpu_env, abi_long arg1, | |
167 | abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6) | |
168 | { | |
169 | abi_long ret; | |
170 | void *p; | |
171 | ||
172 | p = lock_user(VERIFY_READ, arg2, arg3, 1); | |
173 | if (p == NULL) { | |
174 | return -TARGET_EFAULT; | |
175 | } | |
176 | if (regpairs_aligned(cpu_env) != 0) { | |
177 | arg4 = arg5; | |
178 | arg5 = arg6; | |
179 | } | |
180 | ret = get_errno(safe_pwrite(arg1, p, arg3, target_arg64(arg4, arg5))); | |
181 | unlock_user(p, arg2, 0); | |
182 | ||
183 | return ret; | |
184 | } | |
185 | ||
186 | /* writev(2) */ | |
187 | static abi_long do_bsd_writev(abi_long arg1, abi_long arg2, abi_long arg3) | |
188 | { | |
189 | abi_long ret; | |
190 | struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); | |
191 | ||
192 | if (vec != NULL) { | |
193 | ret = get_errno(safe_writev(arg1, vec, arg3)); | |
194 | unlock_iovec(vec, arg2, arg3, 0); | |
195 | } else { | |
196 | ret = -host_to_target_errno(errno); | |
197 | } | |
198 | ||
199 | return ret; | |
200 | } | |
201 | ||
202 | /* pwritev(2) */ | |
203 | static abi_long do_bsd_pwritev(void *cpu_env, abi_long arg1, | |
204 | abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, abi_long arg6) | |
205 | { | |
206 | abi_long ret; | |
207 | struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); | |
208 | ||
209 | if (vec != NULL) { | |
210 | if (regpairs_aligned(cpu_env) != 0) { | |
211 | arg4 = arg5; | |
212 | arg5 = arg6; | |
213 | } | |
214 | ret = get_errno(safe_pwritev(arg1, vec, arg3, target_arg64(arg4, arg5))); | |
215 | unlock_iovec(vec, arg2, arg3, 0); | |
216 | } else { | |
217 | ret = -host_to_target_errno(errno); | |
218 | } | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
223 | /* open(2) */ | |
224 | static abi_long do_bsd_open(abi_long arg1, abi_long arg2, abi_long arg3) | |
225 | { | |
226 | abi_long ret; | |
227 | void *p; | |
228 | ||
229 | LOCK_PATH(p, arg1); | |
230 | ret = get_errno(safe_open(path(p), target_to_host_bitmask(arg2, | |
231 | fcntl_flags_tbl), arg3)); | |
232 | UNLOCK_PATH(p, arg1); | |
233 | ||
234 | return ret; | |
235 | } | |
236 | ||
237 | /* openat(2) */ | |
238 | static abi_long do_bsd_openat(abi_long arg1, abi_long arg2, | |
239 | abi_long arg3, abi_long arg4) | |
240 | { | |
241 | abi_long ret; | |
242 | void *p; | |
243 | ||
244 | LOCK_PATH(p, arg2); | |
245 | ret = get_errno(safe_openat(arg1, path(p), | |
246 | target_to_host_bitmask(arg3, fcntl_flags_tbl), arg4)); | |
247 | UNLOCK_PATH(p, arg2); | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
252 | /* close(2) */ | |
253 | static abi_long do_bsd_close(abi_long arg1) | |
254 | { | |
255 | return get_errno(close(arg1)); | |
256 | } | |
257 | ||
258 | /* fdatasync(2) */ | |
259 | static abi_long do_bsd_fdatasync(abi_long arg1) | |
260 | { | |
261 | return get_errno(fdatasync(arg1)); | |
262 | } | |
263 | ||
264 | /* fsync(2) */ | |
265 | static abi_long do_bsd_fsync(abi_long arg1) | |
266 | { | |
267 | return get_errno(fsync(arg1)); | |
268 | } | |
269 | ||
270 | /* closefrom(2) */ | |
271 | static abi_long do_bsd_closefrom(abi_long arg1) | |
272 | { | |
273 | closefrom(arg1); /* returns void */ | |
274 | return get_errno(0); | |
275 | } | |
276 | ||
277 | /* revoke(2) */ | |
278 | static abi_long do_bsd_revoke(abi_long arg1) | |
279 | { | |
280 | abi_long ret; | |
281 | void *p; | |
282 | ||
283 | LOCK_PATH(p, arg1); | |
284 | ret = get_errno(revoke(p)); /* XXX path(p)? */ | |
285 | UNLOCK_PATH(p, arg1); | |
286 | ||
287 | return ret; | |
288 | } | |
289 | ||
290 | /* access(2) */ | |
291 | static abi_long do_bsd_access(abi_long arg1, abi_long arg2) | |
292 | { | |
293 | abi_long ret; | |
294 | void *p; | |
295 | ||
296 | LOCK_PATH(p, arg1); | |
297 | ret = get_errno(access(path(p), arg2)); | |
298 | UNLOCK_PATH(p, arg1); | |
299 | ||
300 | return ret; | |
301 | } | |
302 | ||
303 | /* eaccess(2) */ | |
304 | static abi_long do_bsd_eaccess(abi_long arg1, abi_long arg2) | |
305 | { | |
306 | abi_long ret; | |
307 | void *p; | |
308 | ||
309 | LOCK_PATH(p, arg1); | |
310 | ret = get_errno(eaccess(path(p), arg2)); | |
311 | UNLOCK_PATH(p, arg1); | |
312 | ||
313 | return ret; | |
314 | } | |
315 | ||
316 | /* faccessat(2) */ | |
317 | static abi_long do_bsd_faccessat(abi_long arg1, abi_long arg2, | |
318 | abi_long arg3, abi_long arg4) | |
319 | { | |
320 | abi_long ret; | |
321 | void *p; | |
322 | ||
323 | LOCK_PATH(p, arg2); | |
324 | ret = get_errno(faccessat(arg1, p, arg3, arg4)); /* XXX path(p)? */ | |
325 | UNLOCK_PATH(p, arg2); | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
330 | /* chdir(2) */ | |
331 | static abi_long do_bsd_chdir(abi_long arg1) | |
332 | { | |
333 | abi_long ret; | |
334 | void *p; | |
335 | ||
336 | LOCK_PATH(p, arg1); | |
337 | ret = get_errno(chdir(p)); /* XXX path(p)? */ | |
338 | UNLOCK_PATH(p, arg1); | |
339 | ||
340 | return ret; | |
341 | } | |
342 | ||
343 | /* fchdir(2) */ | |
344 | static abi_long do_bsd_fchdir(abi_long arg1) | |
345 | { | |
346 | return get_errno(fchdir(arg1)); | |
347 | } | |
348 | ||
349 | /* rename(2) */ | |
350 | static abi_long do_bsd_rename(abi_long arg1, abi_long arg2) | |
351 | { | |
352 | abi_long ret; | |
353 | void *p1, *p2; | |
354 | ||
355 | LOCK_PATH2(p1, arg1, p2, arg2); | |
356 | ret = get_errno(rename(p1, p2)); /* XXX path(p1), path(p2) */ | |
357 | UNLOCK_PATH2(p1, arg1, p2, arg2); | |
358 | ||
359 | return ret; | |
360 | } | |
361 | ||
362 | /* renameat(2) */ | |
363 | static abi_long do_bsd_renameat(abi_long arg1, abi_long arg2, | |
364 | abi_long arg3, abi_long arg4) | |
365 | { | |
366 | abi_long ret; | |
367 | void *p1, *p2; | |
368 | ||
369 | LOCK_PATH2(p1, arg2, p2, arg4); | |
370 | ret = get_errno(renameat(arg1, p1, arg3, p2)); | |
371 | UNLOCK_PATH2(p1, arg2, p2, arg4); | |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | /* link(2) */ | |
377 | static abi_long do_bsd_link(abi_long arg1, abi_long arg2) | |
378 | { | |
379 | abi_long ret; | |
380 | void *p1, *p2; | |
381 | ||
382 | LOCK_PATH2(p1, arg1, p2, arg2); | |
383 | ret = get_errno(link(p1, p2)); /* XXX path(p1), path(p2) */ | |
384 | UNLOCK_PATH2(p1, arg1, p2, arg2); | |
385 | ||
386 | return ret; | |
387 | } | |
388 | ||
389 | /* linkat(2) */ | |
390 | static abi_long do_bsd_linkat(abi_long arg1, abi_long arg2, | |
391 | abi_long arg3, abi_long arg4, abi_long arg5) | |
392 | { | |
393 | abi_long ret; | |
394 | void *p1, *p2; | |
395 | ||
396 | LOCK_PATH2(p1, arg2, p2, arg4); | |
397 | ret = get_errno(linkat(arg1, p1, arg3, p2, arg5)); | |
398 | UNLOCK_PATH2(p1, arg2, p2, arg4); | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
403 | /* unlink(2) */ | |
404 | static abi_long do_bsd_unlink(abi_long arg1) | |
405 | { | |
406 | abi_long ret; | |
407 | void *p; | |
408 | ||
409 | LOCK_PATH(p, arg1); | |
410 | ret = get_errno(unlink(p)); /* XXX path(p) */ | |
411 | UNLOCK_PATH(p, arg1); | |
412 | ||
413 | return ret; | |
414 | } | |
415 | ||
416 | /* unlinkat(2) */ | |
417 | static abi_long do_bsd_unlinkat(abi_long arg1, abi_long arg2, | |
418 | abi_long arg3) | |
419 | { | |
420 | abi_long ret; | |
421 | void *p; | |
422 | ||
423 | LOCK_PATH(p, arg2); | |
424 | ret = get_errno(unlinkat(arg1, p, arg3)); /* XXX path(p) */ | |
425 | UNLOCK_PATH(p, arg2); | |
426 | ||
427 | return ret; | |
428 | } | |
429 | ||
430 | /* mkdir(2) */ | |
431 | static abi_long do_bsd_mkdir(abi_long arg1, abi_long arg2) | |
432 | { | |
433 | abi_long ret; | |
434 | void *p; | |
435 | ||
436 | LOCK_PATH(p, arg1); | |
437 | ret = get_errno(mkdir(p, arg2)); /* XXX path(p) */ | |
438 | UNLOCK_PATH(p, arg1); | |
439 | ||
440 | return ret; | |
441 | } | |
442 | ||
443 | /* mkdirat(2) */ | |
444 | static abi_long do_bsd_mkdirat(abi_long arg1, abi_long arg2, | |
445 | abi_long arg3) | |
446 | { | |
447 | abi_long ret; | |
448 | void *p; | |
449 | ||
450 | LOCK_PATH(p, arg2); | |
451 | ret = get_errno(mkdirat(arg1, p, arg3)); | |
452 | UNLOCK_PATH(p, arg2); | |
453 | ||
454 | return ret; | |
455 | } | |
456 | ||
457 | /* rmdir(2) */ | |
458 | static abi_long do_bsd_rmdir(abi_long arg1) | |
459 | { | |
460 | abi_long ret; | |
461 | void *p; | |
462 | ||
463 | LOCK_PATH(p, arg1); | |
464 | ret = get_errno(rmdir(p)); /* XXX path(p)? */ | |
465 | UNLOCK_PATH(p, arg1); | |
466 | ||
467 | return ret; | |
468 | } | |
469 | ||
470 | /* undocumented __getcwd(char *buf, size_t len) system call */ | |
471 | static abi_long do_bsd___getcwd(abi_long arg1, abi_long arg2) | |
472 | { | |
473 | abi_long ret; | |
474 | void *p; | |
475 | ||
476 | p = lock_user(VERIFY_WRITE, arg1, arg2, 0); | |
477 | if (p == NULL) { | |
478 | return -TARGET_EFAULT; | |
479 | } | |
480 | ret = safe_syscall(SYS___getcwd, p, arg2); | |
481 | unlock_user(p, arg1, ret == 0 ? strlen(p) + 1 : 0); | |
482 | ||
483 | return get_errno(ret); | |
484 | } | |
485 | ||
486 | /* dup(2) */ | |
487 | static abi_long do_bsd_dup(abi_long arg1) | |
488 | { | |
489 | return get_errno(dup(arg1)); | |
490 | } | |
491 | ||
492 | /* dup2(2) */ | |
493 | static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2) | |
494 | { | |
495 | return get_errno(dup2(arg1, arg2)); | |
496 | } | |
497 | ||
498 | /* truncate(2) */ | |
499 | static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1, | |
500 | abi_long arg2, abi_long arg3, abi_long arg4) | |
501 | { | |
502 | abi_long ret; | |
503 | void *p; | |
504 | ||
505 | LOCK_PATH(p, arg1); | |
506 | if (regpairs_aligned(cpu_env) != 0) { | |
507 | arg2 = arg3; | |
508 | arg3 = arg4; | |
509 | } | |
510 | ret = get_errno(truncate(p, target_arg64(arg2, arg3))); | |
511 | UNLOCK_PATH(p, arg1); | |
512 | ||
513 | return ret; | |
514 | } | |
515 | ||
516 | /* ftruncate(2) */ | |
517 | static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1, | |
518 | abi_long arg2, abi_long arg3, abi_long arg4) | |
519 | { | |
520 | if (regpairs_aligned(cpu_env) != 0) { | |
521 | arg2 = arg3; | |
522 | arg3 = arg4; | |
523 | } | |
524 | return get_errno(ftruncate(arg1, target_arg64(arg2, arg3))); | |
525 | } | |
526 | ||
527 | /* acct(2) */ | |
528 | static abi_long do_bsd_acct(abi_long arg1) | |
529 | { | |
530 | abi_long ret; | |
531 | void *p; | |
532 | ||
533 | if (arg1 == 0) { | |
534 | ret = get_errno(acct(NULL)); | |
535 | } else { | |
536 | LOCK_PATH(p, arg1); | |
537 | ret = get_errno(acct(path(p))); | |
538 | UNLOCK_PATH(p, arg1); | |
539 | } | |
540 | return ret; | |
541 | } | |
542 | ||
543 | /* sync(2) */ | |
544 | static abi_long do_bsd_sync(void) | |
545 | { | |
546 | sync(); | |
547 | return 0; | |
548 | } | |
549 | ||
550 | /* mount(2) */ | |
551 | static abi_long do_bsd_mount(abi_long arg1, abi_long arg2, abi_long arg3, | |
552 | abi_long arg4) | |
553 | { | |
554 | abi_long ret; | |
555 | void *p1, *p2; | |
556 | ||
557 | LOCK_PATH2(p1, arg1, p2, arg2); | |
558 | /* | |
559 | * XXX arg4 should be locked, but it isn't clear how to do that since it may | |
560 | * be not be a NULL-terminated string. | |
561 | */ | |
562 | if (arg4 == 0) { | |
563 | ret = get_errno(mount(p1, p2, arg3, NULL)); /* XXX path(p2)? */ | |
564 | } else { | |
565 | ret = get_errno(mount(p1, p2, arg3, g2h_untagged(arg4))); /* XXX path(p2)? */ | |
566 | } | |
567 | UNLOCK_PATH2(p1, arg1, p2, arg2); | |
568 | ||
569 | return ret; | |
570 | } | |
571 | ||
572 | /* unmount(2) */ | |
573 | static abi_long do_bsd_unmount(abi_long arg1, abi_long arg2) | |
574 | { | |
575 | abi_long ret; | |
576 | void *p; | |
577 | ||
578 | LOCK_PATH(p, arg1); | |
579 | ret = get_errno(unmount(p, arg2)); /* XXX path(p)? */ | |
580 | UNLOCK_PATH(p, arg1); | |
581 | ||
582 | return ret; | |
583 | } | |
584 | ||
585 | /* nmount(2) */ | |
586 | static abi_long do_bsd_nmount(abi_long arg1, abi_long count, | |
587 | abi_long flags) | |
588 | { | |
589 | abi_long ret; | |
590 | struct iovec *vec = lock_iovec(VERIFY_READ, arg1, count, 1); | |
591 | ||
592 | if (vec != NULL) { | |
593 | ret = get_errno(nmount(vec, count, flags)); | |
594 | unlock_iovec(vec, arg1, count, 0); | |
595 | } else { | |
596 | return -TARGET_EFAULT; | |
597 | } | |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
602 | /* symlink(2) */ | |
603 | static abi_long do_bsd_symlink(abi_long arg1, abi_long arg2) | |
604 | { | |
605 | abi_long ret; | |
606 | void *p1, *p2; | |
607 | ||
608 | LOCK_PATH2(p1, arg1, p2, arg2); | |
609 | ret = get_errno(symlink(p1, p2)); /* XXX path(p1), path(p2) */ | |
610 | UNLOCK_PATH2(p1, arg1, p2, arg2); | |
611 | ||
612 | return ret; | |
613 | } | |
614 | ||
615 | /* symlinkat(2) */ | |
616 | static abi_long do_bsd_symlinkat(abi_long arg1, abi_long arg2, | |
617 | abi_long arg3) | |
618 | { | |
619 | abi_long ret; | |
620 | void *p1, *p2; | |
621 | ||
622 | LOCK_PATH2(p1, arg1, p2, arg3); | |
623 | ret = get_errno(symlinkat(p1, arg2, p2)); /* XXX path(p1), path(p2) */ | |
624 | UNLOCK_PATH2(p1, arg1, p2, arg3); | |
625 | ||
626 | return ret; | |
627 | } | |
628 | ||
629 | /* readlink(2) */ | |
630 | static abi_long do_bsd_readlink(CPUArchState *env, abi_long arg1, | |
631 | abi_long arg2, abi_long arg3) | |
632 | { | |
633 | abi_long ret; | |
634 | void *p1, *p2; | |
635 | ||
636 | LOCK_PATH(p1, arg1); | |
637 | p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); | |
638 | if (p2 == NULL) { | |
639 | UNLOCK_PATH(p1, arg1); | |
640 | return -TARGET_EFAULT; | |
641 | } | |
642 | if (strcmp(p1, "/proc/curproc/file") == 0) { | |
643 | CPUState *cpu = env_cpu(env); | |
644 | TaskState *ts = (TaskState *)cpu->opaque; | |
645 | strncpy(p2, ts->bprm->fullpath, arg3); | |
646 | ret = MIN((abi_long)strlen(ts->bprm->fullpath), arg3); | |
647 | } else { | |
648 | ret = get_errno(readlink(path(p1), p2, arg3)); | |
649 | } | |
650 | unlock_user(p2, arg2, ret); | |
651 | UNLOCK_PATH(p1, arg1); | |
652 | ||
653 | return ret; | |
654 | } | |
655 | ||
656 | /* readlinkat(2) */ | |
657 | static abi_long do_bsd_readlinkat(abi_long arg1, abi_long arg2, | |
658 | abi_long arg3, abi_long arg4) | |
659 | { | |
660 | abi_long ret; | |
661 | void *p1, *p2; | |
662 | ||
663 | LOCK_PATH(p1, arg2); | |
664 | p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); | |
665 | if (p2 == NULL) { | |
666 | UNLOCK_PATH(p1, arg2); | |
667 | return -TARGET_EFAULT; | |
668 | } | |
669 | ret = get_errno(readlinkat(arg1, p1, p2, arg4)); | |
670 | unlock_user(p2, arg3, ret); | |
671 | UNLOCK_PATH(p1, arg2); | |
672 | ||
673 | return ret; | |
674 | } | |
675 | ||
676 | /* chmod(2) */ | |
677 | static abi_long do_bsd_chmod(abi_long arg1, abi_long arg2) | |
678 | { | |
679 | abi_long ret; | |
680 | void *p; | |
681 | ||
682 | LOCK_PATH(p, arg1); | |
683 | ret = get_errno(chmod(p, arg2)); /* XXX path(p)? */ | |
684 | UNLOCK_PATH(p, arg1); | |
685 | ||
686 | return ret; | |
687 | } | |
688 | ||
689 | /* fchmod(2) */ | |
690 | static abi_long do_bsd_fchmod(abi_long arg1, abi_long arg2) | |
691 | { | |
692 | return get_errno(fchmod(arg1, arg2)); | |
693 | } | |
694 | ||
695 | /* lchmod(2) */ | |
696 | static abi_long do_bsd_lchmod(abi_long arg1, abi_long arg2) | |
697 | { | |
698 | abi_long ret; | |
699 | void *p; | |
700 | ||
701 | LOCK_PATH(p, arg1); | |
702 | ret = get_errno(lchmod(p, arg2)); /* XXX path(p)? */ | |
703 | UNLOCK_PATH(p, arg1); | |
704 | ||
705 | return ret; | |
706 | } | |
707 | ||
708 | /* fchmodat(2) */ | |
709 | static abi_long do_bsd_fchmodat(abi_long arg1, abi_long arg2, | |
710 | abi_long arg3, abi_long arg4) | |
711 | { | |
712 | abi_long ret; | |
713 | void *p; | |
714 | ||
715 | LOCK_PATH(p, arg2); | |
716 | ret = get_errno(fchmodat(arg1, p, arg3, arg4)); | |
717 | UNLOCK_PATH(p, arg2); | |
718 | ||
719 | return ret; | |
720 | } | |
721 | ||
722 | /* pre-ino64 mknod(2) */ | |
723 | static abi_long do_bsd_freebsd11_mknod(abi_long arg1, abi_long arg2, abi_long arg3) | |
724 | { | |
725 | abi_long ret; | |
726 | void *p; | |
727 | ||
728 | LOCK_PATH(p, arg1); | |
729 | ret = get_errno(syscall(SYS_freebsd11_mknod, p, arg2, arg3)); | |
730 | UNLOCK_PATH(p, arg1); | |
731 | ||
732 | return ret; | |
733 | } | |
734 | ||
735 | /* pre-ino64 mknodat(2) */ | |
736 | static abi_long do_bsd_freebsd11_mknodat(abi_long arg1, abi_long arg2, | |
737 | abi_long arg3, abi_long arg4) | |
738 | { | |
739 | abi_long ret; | |
740 | void *p; | |
741 | ||
742 | LOCK_PATH(p, arg2); | |
743 | ret = get_errno(syscall(SYS_freebsd11_mknodat, arg1, p, arg3, arg4)); | |
744 | UNLOCK_PATH(p, arg2); | |
745 | ||
746 | return ret; | |
747 | } | |
748 | ||
749 | /* post-ino64 mknodat(2) */ | |
750 | static abi_long do_bsd_mknodat(void *cpu_env, abi_long arg1, | |
751 | abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, | |
752 | abi_long arg6) | |
753 | { | |
754 | abi_long ret; | |
755 | void *p; | |
756 | ||
757 | LOCK_PATH(p, arg2); | |
758 | /* 32-bit arch's use two 32 registers for 64 bit return value */ | |
759 | if (regpairs_aligned(cpu_env) != 0) { | |
760 | ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg5, arg6))); | |
761 | } else { | |
762 | ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg4, arg5))); | |
763 | } | |
764 | UNLOCK_PATH(p, arg2); | |
765 | ||
766 | return ret; | |
767 | } | |
768 | ||
769 | /* chown(2) */ | |
770 | static abi_long do_bsd_chown(abi_long arg1, abi_long arg2, abi_long arg3) | |
771 | { | |
772 | abi_long ret; | |
773 | void *p; | |
774 | ||
775 | LOCK_PATH(p, arg1); | |
776 | ret = get_errno(chown(p, arg2, arg3)); /* XXX path(p)? */ | |
777 | UNLOCK_PATH(p, arg1); | |
778 | ||
779 | return ret; | |
780 | } | |
781 | ||
782 | /* fchown(2) */ | |
783 | static abi_long do_bsd_fchown(abi_long arg1, abi_long arg2, | |
784 | abi_long arg3) | |
785 | { | |
786 | return get_errno(fchown(arg1, arg2, arg3)); | |
787 | } | |
788 | ||
789 | /* lchown(2) */ | |
790 | static abi_long do_bsd_lchown(abi_long arg1, abi_long arg2, | |
791 | abi_long arg3) | |
792 | { | |
793 | abi_long ret; | |
794 | void *p; | |
795 | ||
796 | LOCK_PATH(p, arg1); | |
797 | ret = get_errno(lchown(p, arg2, arg3)); /* XXX path(p)? */ | |
798 | UNLOCK_PATH(p, arg1); | |
799 | ||
800 | return ret; | |
801 | } | |
802 | ||
803 | /* fchownat(2) */ | |
804 | static abi_long do_bsd_fchownat(abi_long arg1, abi_long arg2, | |
805 | abi_long arg3, abi_long arg4, abi_long arg5) | |
806 | { | |
807 | abi_long ret; | |
808 | void *p; | |
809 | ||
810 | LOCK_PATH(p, arg2); | |
811 | ret = get_errno(fchownat(arg1, p, arg3, arg4, arg5)); /* XXX path(p)? */ | |
812 | UNLOCK_PATH(p, arg2); | |
813 | ||
814 | return ret; | |
815 | } | |
816 | ||
817 | /* chflags(2) */ | |
818 | static abi_long do_bsd_chflags(abi_long arg1, abi_long arg2) | |
819 | { | |
820 | abi_long ret; | |
821 | void *p; | |
822 | ||
823 | LOCK_PATH(p, arg1); | |
824 | ret = get_errno(chflags(p, arg2)); /* XXX path(p)? */ | |
825 | UNLOCK_PATH(p, arg1); | |
826 | ||
827 | return ret; | |
828 | } | |
829 | ||
830 | /* lchflags(2) */ | |
831 | static abi_long do_bsd_lchflags(abi_long arg1, abi_long arg2) | |
832 | { | |
833 | abi_long ret; | |
834 | void *p; | |
835 | ||
836 | LOCK_PATH(p, arg1); | |
837 | ret = get_errno(lchflags(p, arg2)); /* XXX path(p)? */ | |
838 | UNLOCK_PATH(p, arg1); | |
839 | ||
840 | return ret; | |
841 | } | |
842 | ||
843 | /* fchflags(2) */ | |
844 | static abi_long do_bsd_fchflags(abi_long arg1, abi_long arg2) | |
845 | { | |
846 | return get_errno(fchflags(arg1, arg2)); | |
847 | } | |
848 | ||
849 | /* chroot(2) */ | |
850 | static abi_long do_bsd_chroot(abi_long arg1) | |
851 | { | |
852 | abi_long ret; | |
853 | void *p; | |
854 | ||
855 | LOCK_PATH(p, arg1); | |
856 | ret = get_errno(chroot(p)); /* XXX path(p)? */ | |
857 | UNLOCK_PATH(p, arg1); | |
858 | ||
859 | return ret; | |
860 | } | |
861 | ||
862 | /* flock(2) */ | |
863 | static abi_long do_bsd_flock(abi_long arg1, abi_long arg2) | |
864 | { | |
865 | return get_errno(flock(arg1, arg2)); | |
866 | } | |
867 | ||
868 | /* mkfifo(2) */ | |
869 | static abi_long do_bsd_mkfifo(abi_long arg1, abi_long arg2) | |
870 | { | |
871 | abi_long ret; | |
872 | void *p; | |
873 | ||
874 | LOCK_PATH(p, arg1); | |
875 | ret = get_errno(mkfifo(p, arg2)); /* XXX path(p)? */ | |
876 | UNLOCK_PATH(p, arg1); | |
877 | ||
878 | return ret; | |
879 | } | |
880 | ||
881 | /* mkfifoat(2) */ | |
882 | static abi_long do_bsd_mkfifoat(abi_long arg1, abi_long arg2, | |
883 | abi_long arg3) | |
884 | { | |
885 | abi_long ret; | |
886 | void *p; | |
887 | ||
888 | LOCK_PATH(p, arg2); | |
889 | ret = get_errno(mkfifoat(arg1, p, arg3)); | |
890 | UNLOCK_PATH(p, arg2); | |
891 | ||
892 | return ret; | |
893 | } | |
894 | ||
895 | /* pathconf(2) */ | |
896 | static abi_long do_bsd_pathconf(abi_long arg1, abi_long arg2) | |
897 | { | |
898 | abi_long ret; | |
899 | void *p; | |
900 | ||
901 | LOCK_PATH(p, arg1); | |
902 | ret = get_errno(pathconf(p, arg2)); /* XXX path(p)? */ | |
903 | UNLOCK_PATH(p, arg1); | |
904 | ||
905 | return ret; | |
906 | } | |
907 | ||
908 | /* lpathconf(2) */ | |
909 | static abi_long do_bsd_lpathconf(abi_long arg1, abi_long arg2) | |
910 | { | |
911 | abi_long ret; | |
912 | void *p; | |
913 | ||
914 | LOCK_PATH(p, arg1); | |
915 | ret = get_errno(lpathconf(p, arg2)); /* XXX path(p)? */ | |
916 | UNLOCK_PATH(p, arg1); | |
917 | ||
918 | return ret; | |
919 | } | |
920 | ||
921 | /* fpathconf(2) */ | |
922 | static abi_long do_bsd_fpathconf(abi_long arg1, abi_long arg2) | |
923 | { | |
924 | return get_errno(fpathconf(arg1, arg2)); | |
925 | } | |
926 | ||
927 | /* undelete(2) */ | |
928 | static abi_long do_bsd_undelete(abi_long arg1) | |
929 | { | |
930 | abi_long ret; | |
931 | void *p; | |
932 | ||
933 | LOCK_PATH(p, arg1); | |
934 | ret = get_errno(undelete(p)); /* XXX path(p)? */ | |
935 | UNLOCK_PATH(p, arg1); | |
936 | ||
937 | return ret; | |
938 | } | |
939 | ||
940 | #endif /* BSD_FILE_H */ |