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9eb977db KS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010-2012 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <assert.h> | |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
26 | #include <stdlib.h> | |
27 | #include <signal.h> | |
28 | #include <stdio.h> | |
29 | #include <fcntl.h> | |
30 | #include <dirent.h> | |
31 | #include <sys/statvfs.h> | |
32 | ||
33 | #include "macro.h" | |
34 | #include "util.h" | |
35 | #include "log.h" | |
36 | #include "strv.h" | |
37 | #include "path-util.h" | |
a8348796 | 38 | #include "missing.h" |
9eb977db KS |
39 | |
40 | bool path_is_absolute(const char *p) { | |
41 | return p[0] == '/'; | |
42 | } | |
43 | ||
44 | bool is_path(const char *p) { | |
45 | return !!strchr(p, '/'); | |
46 | } | |
47 | ||
9eb977db KS |
48 | int path_get_parent(const char *path, char **_r) { |
49 | const char *e, *a = NULL, *b = NULL, *p; | |
50 | char *r; | |
51 | bool slash = false; | |
52 | ||
53 | assert(path); | |
54 | assert(_r); | |
55 | ||
56 | if (!*path) | |
57 | return -EINVAL; | |
58 | ||
59 | for (e = path; *e; e++) { | |
60 | ||
61 | if (!slash && *e == '/') { | |
62 | a = b; | |
63 | b = e; | |
64 | slash = true; | |
65 | } else if (slash && *e != '/') | |
66 | slash = false; | |
67 | } | |
68 | ||
69 | if (*(e-1) == '/') | |
70 | p = a; | |
71 | else | |
72 | p = b; | |
73 | ||
74 | if (!p) | |
75 | return -EINVAL; | |
76 | ||
77 | if (p == path) | |
78 | r = strdup("/"); | |
79 | else | |
80 | r = strndup(path, p-path); | |
81 | ||
82 | if (!r) | |
83 | return -ENOMEM; | |
84 | ||
85 | *_r = r; | |
86 | return 0; | |
87 | } | |
88 | ||
89 | char **path_split_and_make_absolute(const char *p) { | |
90 | char **l; | |
91 | assert(p); | |
92 | ||
116cc028 ZJS |
93 | l = strv_split(p, ":"); |
94 | if (!l) | |
9eb977db KS |
95 | return NULL; |
96 | ||
97 | if (!path_strv_make_absolute_cwd(l)) { | |
98 | strv_free(l); | |
99 | return NULL; | |
100 | } | |
101 | ||
102 | return l; | |
103 | } | |
104 | ||
105 | char *path_make_absolute(const char *p, const char *prefix) { | |
106 | assert(p); | |
107 | ||
108 | /* Makes every item in the list an absolute path by prepending | |
109 | * the prefix, if specified and necessary */ | |
110 | ||
111 | if (path_is_absolute(p) || !prefix) | |
112 | return strdup(p); | |
113 | ||
b7def684 | 114 | return strjoin(prefix, "/", p, NULL); |
9eb977db KS |
115 | } |
116 | ||
117 | char *path_make_absolute_cwd(const char *p) { | |
116cc028 | 118 | _cleanup_free_ char *cwd = NULL; |
9eb977db KS |
119 | |
120 | assert(p); | |
121 | ||
122 | /* Similar to path_make_absolute(), but prefixes with the | |
123 | * current working directory. */ | |
124 | ||
125 | if (path_is_absolute(p)) | |
126 | return strdup(p); | |
127 | ||
91a6489d LP |
128 | cwd = get_current_dir_name(); |
129 | if (!cwd) | |
9eb977db KS |
130 | return NULL; |
131 | ||
db594aef | 132 | return strjoin(cwd, "/", p, NULL); |
9eb977db KS |
133 | } |
134 | ||
7cb9c51c TK |
135 | int path_make_relative(const char *from_dir, const char *to_path, char **_r) { |
136 | char *r, *p; | |
137 | unsigned n_parents; | |
7cb9c51c TK |
138 | |
139 | assert(from_dir); | |
140 | assert(to_path); | |
141 | assert(_r); | |
142 | ||
143 | /* Strips the common part, and adds ".." elements as necessary. */ | |
144 | ||
145 | if (!path_is_absolute(from_dir)) | |
146 | return -EINVAL; | |
147 | ||
148 | if (!path_is_absolute(to_path)) | |
149 | return -EINVAL; | |
150 | ||
151 | /* Skip the common part. */ | |
152 | for (;;) { | |
153 | size_t a; | |
154 | size_t b; | |
155 | ||
156 | from_dir += strspn(from_dir, "/"); | |
157 | to_path += strspn(to_path, "/"); | |
158 | ||
159 | if (!*from_dir) { | |
160 | if (!*to_path) | |
161 | /* from_dir equals to_path. */ | |
162 | r = strdup("."); | |
163 | else | |
164 | /* from_dir is a parent directory of to_path. */ | |
165 | r = strdup(to_path); | |
166 | ||
167 | if (!r) | |
168 | return -ENOMEM; | |
169 | ||
5216f599 TK |
170 | path_kill_slashes(r); |
171 | ||
7cb9c51c TK |
172 | *_r = r; |
173 | return 0; | |
174 | } | |
175 | ||
176 | if (!*to_path) | |
177 | break; | |
178 | ||
179 | a = strcspn(from_dir, "/"); | |
180 | b = strcspn(to_path, "/"); | |
181 | ||
182 | if (a != b) | |
183 | break; | |
184 | ||
185 | if (memcmp(from_dir, to_path, a) != 0) | |
186 | break; | |
187 | ||
188 | from_dir += a; | |
189 | to_path += b; | |
190 | } | |
191 | ||
192 | /* If we're here, then "from_dir" has one or more elements that need to | |
193 | * be replaced with "..". */ | |
194 | ||
195 | /* Count the number of necessary ".." elements. */ | |
196 | for (n_parents = 0;;) { | |
197 | from_dir += strspn(from_dir, "/"); | |
198 | ||
199 | if (!*from_dir) | |
200 | break; | |
201 | ||
202 | from_dir += strcspn(from_dir, "/"); | |
203 | n_parents++; | |
204 | } | |
205 | ||
5216f599 | 206 | r = malloc(n_parents * 3 + strlen(to_path) + 1); |
7cb9c51c TK |
207 | if (!r) |
208 | return -ENOMEM; | |
209 | ||
210 | for (p = r; n_parents > 0; n_parents--, p += 3) | |
211 | memcpy(p, "../", 3); | |
212 | ||
5216f599 TK |
213 | strcpy(p, to_path); |
214 | path_kill_slashes(r); | |
7cb9c51c TK |
215 | |
216 | *_r = r; | |
217 | return 0; | |
218 | } | |
219 | ||
9eb977db KS |
220 | char **path_strv_make_absolute_cwd(char **l) { |
221 | char **s; | |
222 | ||
223 | /* Goes through every item in the string list and makes it | |
224 | * absolute. This works in place and won't rollback any | |
225 | * changes on failure. */ | |
226 | ||
227 | STRV_FOREACH(s, l) { | |
228 | char *t; | |
229 | ||
116cc028 ZJS |
230 | t = path_make_absolute_cwd(*s); |
231 | if (!t) | |
9eb977db KS |
232 | return NULL; |
233 | ||
234 | free(*s); | |
235 | *s = t; | |
236 | } | |
237 | ||
238 | return l; | |
239 | } | |
240 | ||
7d8da2c9 | 241 | char **path_strv_resolve(char **l, const char *prefix) { |
9eb977db KS |
242 | char **s; |
243 | unsigned k = 0; | |
244 | bool enomem = false; | |
245 | ||
246 | if (strv_isempty(l)) | |
247 | return l; | |
248 | ||
249 | /* Goes through every item in the string list and canonicalize | |
250 | * the path. This works in place and won't rollback any | |
251 | * changes on failure. */ | |
252 | ||
253 | STRV_FOREACH(s, l) { | |
254 | char *t, *u; | |
12ed81d9 | 255 | _cleanup_free_ char *orig = NULL; |
9eb977db | 256 | |
12ed81d9 ZJS |
257 | if (!path_is_absolute(*s)) { |
258 | free(*s); | |
9eb977db | 259 | continue; |
12ed81d9 | 260 | } |
112cfb18 MM |
261 | |
262 | if (prefix) { | |
12ed81d9 ZJS |
263 | orig = *s; |
264 | t = strappend(prefix, orig); | |
112cfb18 MM |
265 | if (!t) { |
266 | enomem = true; | |
267 | continue; | |
268 | } | |
12ed81d9 | 269 | } else |
112cfb18 | 270 | t = *s; |
9eb977db KS |
271 | |
272 | errno = 0; | |
273 | u = canonicalize_file_name(t); | |
9eb977db | 274 | if (!u) { |
12ed81d9 ZJS |
275 | if (errno == ENOENT) { |
276 | if (prefix) { | |
277 | u = orig; | |
278 | orig = NULL; | |
279 | free(t); | |
280 | } else | |
281 | u = t; | |
282 | } else { | |
874310b7 | 283 | free(t); |
112cfb18 | 284 | if (errno == ENOMEM || errno == 0) |
874310b7 ZJS |
285 | enomem = true; |
286 | ||
287 | continue; | |
288 | } | |
12ed81d9 ZJS |
289 | } else if (prefix) { |
290 | char *x; | |
291 | ||
292 | free(t); | |
293 | x = path_startswith(u, prefix); | |
294 | if (x) { | |
295 | /* restore the slash if it was lost */ | |
296 | if (!startswith(x, "/")) | |
297 | *(--x) = '/'; | |
298 | ||
299 | t = strdup(x); | |
300 | free(u); | |
301 | if (!t) { | |
302 | enomem = true; | |
303 | continue; | |
304 | } | |
305 | u = t; | |
306 | } else { | |
307 | /* canonicalized path goes outside of | |
308 | * prefix, keep the original path instead */ | |
309 | u = orig; | |
310 | orig = NULL; | |
311 | } | |
91a6489d LP |
312 | } else |
313 | free(t); | |
9eb977db KS |
314 | |
315 | l[k++] = u; | |
316 | } | |
317 | ||
318 | l[k] = NULL; | |
319 | ||
320 | if (enomem) | |
321 | return NULL; | |
322 | ||
323 | return l; | |
324 | } | |
325 | ||
7d8da2c9 | 326 | char **path_strv_resolve_uniq(char **l, const char *prefix) { |
112cfb18 | 327 | |
fabe5c0e LP |
328 | if (strv_isempty(l)) |
329 | return l; | |
330 | ||
7d8da2c9 | 331 | if (!path_strv_resolve(l, prefix)) |
fabe5c0e LP |
332 | return NULL; |
333 | ||
334 | return strv_uniq(l); | |
335 | } | |
336 | ||
9eb977db KS |
337 | char *path_kill_slashes(char *path) { |
338 | char *f, *t; | |
339 | bool slash = false; | |
340 | ||
341 | /* Removes redundant inner and trailing slashes. Modifies the | |
342 | * passed string in-place. | |
343 | * | |
344 | * ///foo///bar/ becomes /foo/bar | |
345 | */ | |
346 | ||
347 | for (f = path, t = path; *f; f++) { | |
348 | ||
349 | if (*f == '/') { | |
350 | slash = true; | |
351 | continue; | |
352 | } | |
353 | ||
354 | if (slash) { | |
355 | slash = false; | |
356 | *(t++) = '/'; | |
357 | } | |
358 | ||
359 | *(t++) = *f; | |
360 | } | |
361 | ||
362 | /* Special rule, if we are talking of the root directory, a | |
363 | trailing slash is good */ | |
364 | ||
365 | if (t == path && slash) | |
366 | *(t++) = '/'; | |
367 | ||
368 | *t = 0; | |
369 | return path; | |
370 | } | |
371 | ||
424a19f8 | 372 | char* path_startswith(const char *path, const char *prefix) { |
9eb977db KS |
373 | assert(path); |
374 | assert(prefix); | |
375 | ||
376 | if ((path[0] == '/') != (prefix[0] == '/')) | |
424a19f8 | 377 | return NULL; |
9eb977db KS |
378 | |
379 | for (;;) { | |
380 | size_t a, b; | |
381 | ||
382 | path += strspn(path, "/"); | |
383 | prefix += strspn(prefix, "/"); | |
384 | ||
385 | if (*prefix == 0) | |
424a19f8 | 386 | return (char*) path; |
9eb977db KS |
387 | |
388 | if (*path == 0) | |
424a19f8 | 389 | return NULL; |
9eb977db KS |
390 | |
391 | a = strcspn(path, "/"); | |
392 | b = strcspn(prefix, "/"); | |
393 | ||
394 | if (a != b) | |
424a19f8 | 395 | return NULL; |
9eb977db KS |
396 | |
397 | if (memcmp(path, prefix, a) != 0) | |
424a19f8 | 398 | return NULL; |
9eb977db KS |
399 | |
400 | path += a; | |
401 | prefix += b; | |
402 | } | |
403 | } | |
404 | ||
405 | bool path_equal(const char *a, const char *b) { | |
406 | assert(a); | |
407 | assert(b); | |
408 | ||
409 | if ((a[0] == '/') != (b[0] == '/')) | |
410 | return false; | |
411 | ||
412 | for (;;) { | |
413 | size_t j, k; | |
414 | ||
415 | a += strspn(a, "/"); | |
416 | b += strspn(b, "/"); | |
417 | ||
418 | if (*a == 0 && *b == 0) | |
419 | return true; | |
420 | ||
421 | if (*a == 0 || *b == 0) | |
422 | return false; | |
423 | ||
424 | j = strcspn(a, "/"); | |
425 | k = strcspn(b, "/"); | |
426 | ||
427 | if (j != k) | |
428 | return false; | |
429 | ||
430 | if (memcmp(a, b, j) != 0) | |
431 | return false; | |
432 | ||
433 | a += j; | |
434 | b += k; | |
435 | } | |
436 | } | |
437 | ||
0c6ea3a4 ZJS |
438 | char* path_join(const char *root, const char *path, const char *rest) { |
439 | assert(path); | |
440 | ||
441 | if (!isempty(root)) | |
bc854dc7 | 442 | return strjoin(root, endswith(root, "/") ? "" : "/", |
0c6ea3a4 | 443 | path[0] == '/' ? path+1 : path, |
bc854dc7 | 444 | rest ? (endswith(path, "/") ? "" : "/") : NULL, |
0c6ea3a4 ZJS |
445 | rest && rest[0] == '/' ? rest+1 : rest, |
446 | NULL); | |
447 | else | |
448 | return strjoin(path, | |
bc854dc7 | 449 | rest ? (endswith(path, "/") ? "" : "/") : NULL, |
0c6ea3a4 ZJS |
450 | rest && rest[0] == '/' ? rest+1 : rest, |
451 | NULL); | |
452 | } | |
453 | ||
9eb977db | 454 | int path_is_mount_point(const char *t, bool allow_symlink) { |
21749924 LP |
455 | |
456 | union file_handle_union h = { | |
457 | .handle.handle_bytes = MAX_HANDLE_SZ | |
458 | }; | |
459 | ||
cde9cb34 | 460 | int mount_id, mount_id_parent; |
e1d75803 | 461 | _cleanup_free_ char *parent = NULL; |
1640a0b6 | 462 | struct stat a, b; |
21749924 | 463 | int r; |
9eb977db | 464 | |
cde9cb34 LP |
465 | /* We are not actually interested in the file handles, but |
466 | * name_to_handle_at() also passes us the mount ID, hence use | |
467 | * it but throw the handle away */ | |
468 | ||
469 | if (path_equal(t, "/")) | |
470 | return 1; | |
9eb977db | 471 | |
21749924 | 472 | r = name_to_handle_at(AT_FDCWD, t, &h.handle, &mount_id, allow_symlink ? AT_SYMLINK_FOLLOW : 0); |
9eb977db | 473 | if (r < 0) { |
21749924 | 474 | if (IN_SET(errno, ENOSYS, EOPNOTSUPP)) |
fa125f4e | 475 | /* This kernel or file system does not support |
1640a0b6 LP |
476 | * name_to_handle_at(), hence fallback to the |
477 | * traditional stat() logic */ | |
478 | goto fallback; | |
479 | ||
9eb977db KS |
480 | if (errno == ENOENT) |
481 | return 0; | |
482 | ||
483 | return -errno; | |
484 | } | |
485 | ||
486 | r = path_get_parent(t, &parent); | |
487 | if (r < 0) | |
488 | return r; | |
489 | ||
21749924 LP |
490 | h.handle.handle_bytes = MAX_HANDLE_SZ; |
491 | r = name_to_handle_at(AT_FDCWD, parent, &h.handle, &mount_id_parent, 0); | |
1640a0b6 LP |
492 | if (r < 0) { |
493 | /* The parent can't do name_to_handle_at() but the | |
494 | * directory we are interested in can? If so, it must | |
495 | * be a mount point */ | |
21749924 | 496 | if (errno == EOPNOTSUPP) |
1640a0b6 LP |
497 | return 1; |
498 | ||
499 | return -errno; | |
500 | } | |
501 | ||
502 | return mount_id != mount_id_parent; | |
503 | ||
504 | fallback: | |
505 | if (allow_symlink) | |
506 | r = stat(t, &a); | |
507 | else | |
f408b8f1 | 508 | r = lstat(t, &a); |
1640a0b6 | 509 | |
8ac75493 MM |
510 | if (r < 0) { |
511 | if (errno == ENOENT) | |
512 | return 0; | |
513 | ||
9eb977db | 514 | return -errno; |
8ac75493 | 515 | } |
9eb977db | 516 | |
1640a0b6 LP |
517 | r = path_get_parent(t, &parent); |
518 | if (r < 0) | |
519 | return r; | |
cde9cb34 | 520 | |
1640a0b6 | 521 | r = lstat(parent, &b); |
1640a0b6 LP |
522 | if (r < 0) |
523 | return -errno; | |
524 | ||
525 | return a.st_dev != b.st_dev; | |
9eb977db KS |
526 | } |
527 | ||
528 | int path_is_read_only_fs(const char *path) { | |
529 | struct statvfs st; | |
530 | ||
531 | assert(path); | |
532 | ||
533 | if (statvfs(path, &st) < 0) | |
534 | return -errno; | |
535 | ||
70421bdc LP |
536 | if (st.f_flag & ST_RDONLY) |
537 | return true; | |
538 | ||
539 | /* On NFS, statvfs() might not reflect whether we can actually | |
540 | * write to the remote share. Let's try again with | |
541 | * access(W_OK) which is more reliable, at least sometimes. */ | |
542 | if (access(path, W_OK) < 0 && errno == EROFS) | |
543 | return true; | |
544 | ||
545 | return false; | |
9eb977db | 546 | } |
66060897 LP |
547 | |
548 | int path_is_os_tree(const char *path) { | |
549 | char *p; | |
550 | int r; | |
551 | ||
5ae4d543 LP |
552 | /* We use /usr/lib/os-release as flag file if something is an OS */ |
553 | p = strappenda(path, "/usr/lib/os-release"); | |
554 | r = access(p, F_OK); | |
555 | ||
556 | if (r >= 0) | |
557 | return 1; | |
66060897 | 558 | |
5ae4d543 | 559 | /* Also check for the old location in /etc, just in case. */ |
66060897 LP |
560 | p = strappenda(path, "/etc/os-release"); |
561 | r = access(p, F_OK); | |
562 | ||
5ae4d543 | 563 | return r >= 0; |
66060897 | 564 | } |
c9d954b2 | 565 | |
b63bd109 | 566 | int find_binary(const char *name, bool local, char **filename) { |
c9d954b2 | 567 | assert(name); |
4087cb9e | 568 | |
571d0134 | 569 | if (is_path(name)) { |
b63bd109 | 570 | if (local && access(name, X_OK) < 0) |
b972115c ZJS |
571 | return -errno; |
572 | ||
eb66db55 MG |
573 | if (filename) { |
574 | char *p; | |
c9d954b2 | 575 | |
b972115c | 576 | p = path_make_absolute_cwd(name); |
eb66db55 MG |
577 | if (!p) |
578 | return -ENOMEM; | |
b972115c | 579 | |
eb66db55 MG |
580 | *filename = p; |
581 | } | |
c9d954b2 | 582 | |
c9d954b2 ZJS |
583 | return 0; |
584 | } else { | |
585 | const char *path; | |
a2a5291b | 586 | const char *word, *state; |
c9d954b2 ZJS |
587 | size_t l; |
588 | ||
589 | /** | |
590 | * Plain getenv, not secure_getenv, because we want | |
591 | * to actually allow the user to pick the binary. | |
592 | */ | |
593 | path = getenv("PATH"); | |
594 | if (!path) | |
595 | path = DEFAULT_PATH; | |
596 | ||
a2a5291b | 597 | FOREACH_WORD_SEPARATOR(word, l, path, ":", state) { |
eb66db55 | 598 | _cleanup_free_ char *p = NULL; |
c9d954b2 | 599 | |
a2a5291b | 600 | if (asprintf(&p, "%.*s/%s", (int) l, word, name) < 0) |
c9d954b2 ZJS |
601 | return -ENOMEM; |
602 | ||
eb66db55 | 603 | if (access(p, X_OK) < 0) |
c9d954b2 | 604 | continue; |
c9d954b2 | 605 | |
eb66db55 | 606 | if (filename) { |
dbb9401d | 607 | *filename = path_kill_slashes(p); |
eb66db55 MG |
608 | p = NULL; |
609 | } | |
c9d954b2 ZJS |
610 | |
611 | return 0; | |
612 | } | |
613 | ||
614 | return -ENOENT; | |
615 | } | |
616 | } | |
8e184852 | 617 | |
2ad8416d | 618 | bool paths_check_timestamp(const char* const* paths, usec_t *timestamp, bool update) { |
8e184852 | 619 | bool changed = false; |
2ad8416d | 620 | const char* const* i; |
8e184852 | 621 | |
97f2d76d TG |
622 | assert(timestamp); |
623 | ||
8e184852 | 624 | if (paths == NULL) |
4087cb9e | 625 | return false; |
8e184852 | 626 | |
4087cb9e | 627 | STRV_FOREACH(i, paths) { |
8e184852 | 628 | struct stat stats; |
4087cb9e | 629 | usec_t u; |
8e184852 | 630 | |
4087cb9e | 631 | if (stat(*i, &stats) < 0) |
8e184852 TG |
632 | continue; |
633 | ||
4087cb9e LP |
634 | u = timespec_load(&stats.st_mtim); |
635 | ||
97f2d76d | 636 | /* first check */ |
4087cb9e | 637 | if (*timestamp >= u) |
8e184852 TG |
638 | continue; |
639 | ||
9f6445e3 | 640 | log_debug("timestamp of '%s' changed", *i); |
8e184852 TG |
641 | |
642 | /* update timestamp */ | |
4087cb9e LP |
643 | if (update) { |
644 | *timestamp = u; | |
645 | changed = true; | |
646 | } else | |
647 | return true; | |
8e184852 | 648 | } |
4087cb9e | 649 | |
8e184852 TG |
650 | return changed; |
651 | } | |
eb66db55 MG |
652 | |
653 | int fsck_exists(const char *fstype) { | |
571d0134 | 654 | _cleanup_free_ char *p = NULL, *d = NULL; |
eb66db55 | 655 | const char *checker; |
571d0134 | 656 | int r; |
eb66db55 MG |
657 | |
658 | checker = strappenda("fsck.", fstype); | |
571d0134 | 659 | |
b63bd109 | 660 | r = find_binary(checker, true, &p); |
571d0134 LP |
661 | if (r < 0) |
662 | return r; | |
663 | ||
061df014 | 664 | /* An fsck that is linked to /bin/true is a non-existent |
571d0134 LP |
665 | * fsck */ |
666 | ||
667 | r = readlink_malloc(p, &d); | |
668 | if (r >= 0 && | |
669 | (path_equal(d, "/bin/true") || | |
670 | path_equal(d, "/usr/bin/true") || | |
671 | path_equal(d, "/dev/null"))) | |
672 | return -ENOENT; | |
673 | ||
674 | return 0; | |
eb66db55 | 675 | } |