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Commit | Line | Data |
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4349cd7c LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
11c3a366 TA |
20 | #include <errno.h> |
21 | #include <stdlib.h> | |
4349cd7c LP |
22 | #include <string.h> |
23 | #include <sys/mount.h> | |
11c3a366 | 24 | #include <sys/stat.h> |
4349cd7c | 25 | #include <sys/statvfs.h> |
11c3a366 | 26 | #include <unistd.h> |
4349cd7c | 27 | |
b5efdb8a | 28 | #include "alloc-util.h" |
4349cd7c LP |
29 | #include "escape.h" |
30 | #include "fd-util.h" | |
31 | #include "fileio.h" | |
93cc7779 | 32 | #include "hashmap.h" |
4349cd7c LP |
33 | #include "mount-util.h" |
34 | #include "parse-util.h" | |
35 | #include "path-util.h" | |
36 | #include "set.h" | |
15a5e950 | 37 | #include "stdio-util.h" |
4349cd7c | 38 | #include "string-util.h" |
6b7c9f8b | 39 | #include "strv.h" |
4349cd7c LP |
40 | |
41 | static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id) { | |
42 | char path[strlen("/proc/self/fdinfo/") + DECIMAL_STR_MAX(int)]; | |
43 | _cleanup_free_ char *fdinfo = NULL; | |
44 | _cleanup_close_ int subfd = -1; | |
45 | char *p; | |
46 | int r; | |
47 | ||
48 | if ((flags & AT_EMPTY_PATH) && isempty(filename)) | |
49 | xsprintf(path, "/proc/self/fdinfo/%i", fd); | |
50 | else { | |
c4b69156 | 51 | subfd = openat(fd, filename, O_CLOEXEC|O_PATH); |
4349cd7c LP |
52 | if (subfd < 0) |
53 | return -errno; | |
54 | ||
55 | xsprintf(path, "/proc/self/fdinfo/%i", subfd); | |
56 | } | |
57 | ||
58 | r = read_full_file(path, &fdinfo, NULL); | |
59 | if (r == -ENOENT) /* The fdinfo directory is a relatively new addition */ | |
60 | return -EOPNOTSUPP; | |
61 | if (r < 0) | |
62 | return -errno; | |
63 | ||
64 | p = startswith(fdinfo, "mnt_id:"); | |
65 | if (!p) { | |
66 | p = strstr(fdinfo, "\nmnt_id:"); | |
67 | if (!p) /* The mnt_id field is a relatively new addition */ | |
68 | return -EOPNOTSUPP; | |
69 | ||
70 | p += 8; | |
71 | } | |
72 | ||
73 | p += strspn(p, WHITESPACE); | |
74 | p[strcspn(p, WHITESPACE)] = 0; | |
75 | ||
76 | return safe_atoi(p, mnt_id); | |
77 | } | |
78 | ||
4349cd7c LP |
79 | int fd_is_mount_point(int fd, const char *filename, int flags) { |
80 | union file_handle_union h = FILE_HANDLE_INIT, h_parent = FILE_HANDLE_INIT; | |
81 | int mount_id = -1, mount_id_parent = -1; | |
82 | bool nosupp = false, check_st_dev = true; | |
83 | struct stat a, b; | |
84 | int r; | |
85 | ||
86 | assert(fd >= 0); | |
87 | assert(filename); | |
88 | ||
89 | /* First we will try the name_to_handle_at() syscall, which | |
90 | * tells us the mount id and an opaque file "handle". It is | |
91 | * not supported everywhere though (kernel compile-time | |
92 | * option, not all file systems are hooked up). If it works | |
93 | * the mount id is usually good enough to tell us whether | |
94 | * something is a mount point. | |
95 | * | |
96 | * If that didn't work we will try to read the mount id from | |
97 | * /proc/self/fdinfo/<fd>. This is almost as good as | |
98 | * name_to_handle_at(), however, does not return the | |
99 | * opaque file handle. The opaque file handle is pretty useful | |
100 | * to detect the root directory, which we should always | |
101 | * consider a mount point. Hence we use this only as | |
102 | * fallback. Exporting the mnt_id in fdinfo is a pretty recent | |
103 | * kernel addition. | |
104 | * | |
105 | * As last fallback we do traditional fstat() based st_dev | |
106 | * comparisons. This is how things were traditionally done, | |
61233823 | 107 | * but unionfs breaks this since it exposes file |
4349cd7c LP |
108 | * systems with a variety of st_dev reported. Also, btrfs |
109 | * subvolumes have different st_dev, even though they aren't | |
110 | * real mounts of their own. */ | |
111 | ||
112 | r = name_to_handle_at(fd, filename, &h.handle, &mount_id, flags); | |
113 | if (r < 0) { | |
114 | if (errno == ENOSYS) | |
115 | /* This kernel does not support name_to_handle_at() | |
116 | * fall back to simpler logic. */ | |
117 | goto fallback_fdinfo; | |
118 | else if (errno == EOPNOTSUPP) | |
119 | /* This kernel or file system does not support | |
120 | * name_to_handle_at(), hence let's see if the | |
121 | * upper fs supports it (in which case it is a | |
122 | * mount point), otherwise fallback to the | |
123 | * traditional stat() logic */ | |
124 | nosupp = true; | |
125 | else | |
126 | return -errno; | |
127 | } | |
128 | ||
129 | r = name_to_handle_at(fd, "", &h_parent.handle, &mount_id_parent, AT_EMPTY_PATH); | |
130 | if (r < 0) { | |
131 | if (errno == EOPNOTSUPP) { | |
132 | if (nosupp) | |
133 | /* Neither parent nor child do name_to_handle_at()? | |
134 | We have no choice but to fall back. */ | |
135 | goto fallback_fdinfo; | |
136 | else | |
137 | /* The parent can't do name_to_handle_at() but the | |
138 | * directory we are interested in can? | |
139 | * If so, it must be a mount point. */ | |
140 | return 1; | |
141 | } else | |
142 | return -errno; | |
143 | } | |
144 | ||
145 | /* The parent can do name_to_handle_at() but the | |
146 | * directory we are interested in can't? If so, it | |
147 | * must be a mount point. */ | |
148 | if (nosupp) | |
149 | return 1; | |
150 | ||
151 | /* If the file handle for the directory we are | |
152 | * interested in and its parent are identical, we | |
153 | * assume this is the root directory, which is a mount | |
154 | * point. */ | |
155 | ||
156 | if (h.handle.handle_bytes == h_parent.handle.handle_bytes && | |
157 | h.handle.handle_type == h_parent.handle.handle_type && | |
158 | memcmp(h.handle.f_handle, h_parent.handle.f_handle, h.handle.handle_bytes) == 0) | |
159 | return 1; | |
160 | ||
161 | return mount_id != mount_id_parent; | |
162 | ||
163 | fallback_fdinfo: | |
164 | r = fd_fdinfo_mnt_id(fd, filename, flags, &mount_id); | |
165 | if (r == -EOPNOTSUPP) | |
166 | goto fallback_fstat; | |
167 | if (r < 0) | |
168 | return r; | |
169 | ||
170 | r = fd_fdinfo_mnt_id(fd, "", AT_EMPTY_PATH, &mount_id_parent); | |
171 | if (r < 0) | |
172 | return r; | |
173 | ||
174 | if (mount_id != mount_id_parent) | |
175 | return 1; | |
176 | ||
177 | /* Hmm, so, the mount ids are the same. This leaves one | |
178 | * special case though for the root file system. For that, | |
179 | * let's see if the parent directory has the same inode as we | |
180 | * are interested in. Hence, let's also do fstat() checks now, | |
181 | * too, but avoid the st_dev comparisons, since they aren't | |
182 | * that useful on unionfs mounts. */ | |
183 | check_st_dev = false; | |
184 | ||
185 | fallback_fstat: | |
186 | /* yay for fstatat() taking a different set of flags than the other | |
187 | * _at() above */ | |
188 | if (flags & AT_SYMLINK_FOLLOW) | |
189 | flags &= ~AT_SYMLINK_FOLLOW; | |
190 | else | |
191 | flags |= AT_SYMLINK_NOFOLLOW; | |
192 | if (fstatat(fd, filename, &a, flags) < 0) | |
193 | return -errno; | |
194 | ||
195 | if (fstatat(fd, "", &b, AT_EMPTY_PATH) < 0) | |
196 | return -errno; | |
197 | ||
198 | /* A directory with same device and inode as its parent? Must | |
199 | * be the root directory */ | |
200 | if (a.st_dev == b.st_dev && | |
201 | a.st_ino == b.st_ino) | |
202 | return 1; | |
203 | ||
204 | return check_st_dev && (a.st_dev != b.st_dev); | |
205 | } | |
206 | ||
207 | /* flags can be AT_SYMLINK_FOLLOW or 0 */ | |
208 | int path_is_mount_point(const char *t, int flags) { | |
209 | _cleanup_close_ int fd = -1; | |
210 | _cleanup_free_ char *canonical = NULL, *parent = NULL; | |
211 | ||
212 | assert(t); | |
213 | ||
214 | if (path_equal(t, "/")) | |
215 | return 1; | |
216 | ||
217 | /* we need to resolve symlinks manually, we can't just rely on | |
218 | * fd_is_mount_point() to do that for us; if we have a structure like | |
219 | * /bin -> /usr/bin/ and /usr is a mount point, then the parent that we | |
220 | * look at needs to be /usr, not /. */ | |
221 | if (flags & AT_SYMLINK_FOLLOW) { | |
222 | canonical = canonicalize_file_name(t); | |
223 | if (!canonical) | |
224 | return -errno; | |
225 | ||
226 | t = canonical; | |
227 | } | |
228 | ||
229 | parent = dirname_malloc(t); | |
230 | if (!parent) | |
231 | return -ENOMEM; | |
232 | ||
c4b69156 | 233 | fd = openat(AT_FDCWD, parent, O_DIRECTORY|O_CLOEXEC|O_PATH); |
4349cd7c LP |
234 | if (fd < 0) |
235 | return -errno; | |
236 | ||
237 | return fd_is_mount_point(fd, basename(t), flags); | |
238 | } | |
239 | ||
240 | int umount_recursive(const char *prefix, int flags) { | |
241 | bool again; | |
242 | int n = 0, r; | |
243 | ||
244 | /* Try to umount everything recursively below a | |
245 | * directory. Also, take care of stacked mounts, and keep | |
246 | * unmounting them until they are gone. */ | |
247 | ||
248 | do { | |
249 | _cleanup_fclose_ FILE *proc_self_mountinfo = NULL; | |
250 | ||
251 | again = false; | |
252 | r = 0; | |
253 | ||
254 | proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); | |
255 | if (!proc_self_mountinfo) | |
256 | return -errno; | |
257 | ||
258 | for (;;) { | |
259 | _cleanup_free_ char *path = NULL, *p = NULL; | |
260 | int k; | |
261 | ||
262 | k = fscanf(proc_self_mountinfo, | |
263 | "%*s " /* (1) mount id */ | |
264 | "%*s " /* (2) parent id */ | |
265 | "%*s " /* (3) major:minor */ | |
266 | "%*s " /* (4) root */ | |
267 | "%ms " /* (5) mount point */ | |
268 | "%*s" /* (6) mount options */ | |
269 | "%*[^-]" /* (7) optional fields */ | |
270 | "- " /* (8) separator */ | |
271 | "%*s " /* (9) file system type */ | |
272 | "%*s" /* (10) mount source */ | |
273 | "%*s" /* (11) mount options 2 */ | |
274 | "%*[^\n]", /* some rubbish at the end */ | |
275 | &path); | |
276 | if (k != 1) { | |
277 | if (k == EOF) | |
278 | break; | |
279 | ||
280 | continue; | |
281 | } | |
282 | ||
283 | r = cunescape(path, UNESCAPE_RELAX, &p); | |
284 | if (r < 0) | |
285 | return r; | |
286 | ||
287 | if (!path_startswith(p, prefix)) | |
288 | continue; | |
289 | ||
290 | if (umount2(p, flags) < 0) { | |
6b7c9f8b | 291 | r = log_debug_errno(errno, "Failed to umount %s: %m", p); |
4349cd7c LP |
292 | continue; |
293 | } | |
294 | ||
6b7c9f8b LP |
295 | log_debug("Successfully unmounted %s", p); |
296 | ||
4349cd7c LP |
297 | again = true; |
298 | n++; | |
299 | ||
300 | break; | |
301 | } | |
302 | ||
303 | } while (again); | |
304 | ||
305 | return r ? r : n; | |
306 | } | |
307 | ||
308 | static int get_mount_flags(const char *path, unsigned long *flags) { | |
309 | struct statvfs buf; | |
310 | ||
311 | if (statvfs(path, &buf) < 0) | |
312 | return -errno; | |
313 | *flags = buf.f_flag; | |
314 | return 0; | |
315 | } | |
316 | ||
6b7c9f8b | 317 | int bind_remount_recursive(const char *prefix, bool ro, char **blacklist) { |
4349cd7c LP |
318 | _cleanup_set_free_free_ Set *done = NULL; |
319 | _cleanup_free_ char *cleaned = NULL; | |
320 | int r; | |
321 | ||
6b7c9f8b LP |
322 | /* Recursively remount a directory (and all its submounts) read-only or read-write. If the directory is already |
323 | * mounted, we reuse the mount and simply mark it MS_BIND|MS_RDONLY (or remove the MS_RDONLY for read-write | |
324 | * operation). If it isn't we first make it one. Afterwards we apply MS_BIND|MS_RDONLY (or remove MS_RDONLY) to | |
325 | * all submounts we can access, too. When mounts are stacked on the same mount point we only care for each | |
326 | * individual "top-level" mount on each point, as we cannot influence/access the underlying mounts anyway. We | |
327 | * do not have any effect on future submounts that might get propagated, they migt be writable. This includes | |
328 | * future submounts that have been triggered via autofs. | |
329 | * | |
330 | * If the "blacklist" parameter is specified it may contain a list of subtrees to exclude from the | |
331 | * remount operation. Note that we'll ignore the blacklist for the top-level path. */ | |
4349cd7c LP |
332 | |
333 | cleaned = strdup(prefix); | |
334 | if (!cleaned) | |
335 | return -ENOMEM; | |
336 | ||
337 | path_kill_slashes(cleaned); | |
338 | ||
339 | done = set_new(&string_hash_ops); | |
340 | if (!done) | |
341 | return -ENOMEM; | |
342 | ||
343 | for (;;) { | |
344 | _cleanup_fclose_ FILE *proc_self_mountinfo = NULL; | |
345 | _cleanup_set_free_free_ Set *todo = NULL; | |
346 | bool top_autofs = false; | |
347 | char *x; | |
348 | unsigned long orig_flags; | |
349 | ||
350 | todo = set_new(&string_hash_ops); | |
351 | if (!todo) | |
352 | return -ENOMEM; | |
353 | ||
354 | proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); | |
355 | if (!proc_self_mountinfo) | |
356 | return -errno; | |
357 | ||
358 | for (;;) { | |
359 | _cleanup_free_ char *path = NULL, *p = NULL, *type = NULL; | |
360 | int k; | |
361 | ||
362 | k = fscanf(proc_self_mountinfo, | |
363 | "%*s " /* (1) mount id */ | |
364 | "%*s " /* (2) parent id */ | |
365 | "%*s " /* (3) major:minor */ | |
366 | "%*s " /* (4) root */ | |
367 | "%ms " /* (5) mount point */ | |
368 | "%*s" /* (6) mount options (superblock) */ | |
369 | "%*[^-]" /* (7) optional fields */ | |
370 | "- " /* (8) separator */ | |
371 | "%ms " /* (9) file system type */ | |
372 | "%*s" /* (10) mount source */ | |
373 | "%*s" /* (11) mount options (bind mount) */ | |
374 | "%*[^\n]", /* some rubbish at the end */ | |
375 | &path, | |
376 | &type); | |
377 | if (k != 2) { | |
378 | if (k == EOF) | |
379 | break; | |
380 | ||
381 | continue; | |
382 | } | |
383 | ||
384 | r = cunescape(path, UNESCAPE_RELAX, &p); | |
385 | if (r < 0) | |
386 | return r; | |
387 | ||
6b7c9f8b LP |
388 | if (!path_startswith(p, cleaned)) |
389 | continue; | |
390 | ||
391 | /* Ignore this mount if it is blacklisted, but only if it isn't the top-level mount we shall | |
392 | * operate on. */ | |
393 | if (!path_equal(cleaned, p)) { | |
394 | bool blacklisted = false; | |
395 | char **i; | |
396 | ||
397 | STRV_FOREACH(i, blacklist) { | |
398 | ||
399 | if (path_equal(*i, cleaned)) | |
400 | continue; | |
401 | ||
402 | if (!path_startswith(*i, cleaned)) | |
403 | continue; | |
404 | ||
405 | if (path_startswith(p, *i)) { | |
406 | blacklisted = true; | |
407 | log_debug("Not remounting %s, because blacklisted by %s, called for %s", p, *i, cleaned); | |
408 | break; | |
409 | } | |
410 | } | |
411 | if (blacklisted) | |
412 | continue; | |
413 | } | |
414 | ||
4349cd7c LP |
415 | /* Let's ignore autofs mounts. If they aren't |
416 | * triggered yet, we want to avoid triggering | |
417 | * them, as we don't make any guarantees for | |
418 | * future submounts anyway. If they are | |
419 | * already triggered, then we will find | |
420 | * another entry for this. */ | |
421 | if (streq(type, "autofs")) { | |
422 | top_autofs = top_autofs || path_equal(cleaned, p); | |
423 | continue; | |
424 | } | |
425 | ||
6b7c9f8b | 426 | if (!set_contains(done, p)) { |
4349cd7c LP |
427 | r = set_consume(todo, p); |
428 | p = NULL; | |
4349cd7c LP |
429 | if (r == -EEXIST) |
430 | continue; | |
431 | if (r < 0) | |
432 | return r; | |
433 | } | |
434 | } | |
435 | ||
436 | /* If we have no submounts to process anymore and if | |
437 | * the root is either already done, or an autofs, we | |
438 | * are done */ | |
439 | if (set_isempty(todo) && | |
440 | (top_autofs || set_contains(done, cleaned))) | |
441 | return 0; | |
442 | ||
443 | if (!set_contains(done, cleaned) && | |
444 | !set_contains(todo, cleaned)) { | |
6b7c9f8b | 445 | /* The prefix directory itself is not yet a mount, make it one. */ |
4349cd7c LP |
446 | if (mount(cleaned, cleaned, NULL, MS_BIND|MS_REC, NULL) < 0) |
447 | return -errno; | |
448 | ||
449 | orig_flags = 0; | |
450 | (void) get_mount_flags(cleaned, &orig_flags); | |
451 | orig_flags &= ~MS_RDONLY; | |
452 | ||
453 | if (mount(NULL, prefix, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0) | |
454 | return -errno; | |
455 | ||
6b7c9f8b LP |
456 | log_debug("Made top-level directory %s a mount point.", prefix); |
457 | ||
4349cd7c LP |
458 | x = strdup(cleaned); |
459 | if (!x) | |
460 | return -ENOMEM; | |
461 | ||
462 | r = set_consume(done, x); | |
463 | if (r < 0) | |
464 | return r; | |
465 | } | |
466 | ||
467 | while ((x = set_steal_first(todo))) { | |
468 | ||
469 | r = set_consume(done, x); | |
470 | if (r == -EEXIST || r == 0) | |
471 | continue; | |
472 | if (r < 0) | |
473 | return r; | |
474 | ||
6b7c9f8b | 475 | /* Deal with mount points that are obstructed by a later mount */ |
98df8089 AC |
476 | r = path_is_mount_point(x, 0); |
477 | if (r == -ENOENT || r == 0) | |
478 | continue; | |
479 | if (r < 0) | |
480 | return r; | |
481 | ||
482 | /* Try to reuse the original flag set */ | |
4349cd7c LP |
483 | orig_flags = 0; |
484 | (void) get_mount_flags(x, &orig_flags); | |
485 | orig_flags &= ~MS_RDONLY; | |
486 | ||
98df8089 AC |
487 | if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0) |
488 | return -errno; | |
4349cd7c | 489 | |
6b7c9f8b | 490 | log_debug("Remounted %s read-only.", x); |
4349cd7c LP |
491 | } |
492 | } | |
493 | } | |
494 | ||
495 | int mount_move_root(const char *path) { | |
496 | assert(path); | |
497 | ||
498 | if (chdir(path) < 0) | |
499 | return -errno; | |
500 | ||
501 | if (mount(path, "/", NULL, MS_MOVE, NULL) < 0) | |
502 | return -errno; | |
503 | ||
504 | if (chroot(".") < 0) | |
505 | return -errno; | |
506 | ||
507 | if (chdir("/") < 0) | |
508 | return -errno; | |
509 | ||
510 | return 0; | |
511 | } | |
4e036b7a LP |
512 | |
513 | bool fstype_is_network(const char *fstype) { | |
514 | static const char table[] = | |
515 | "afs\0" | |
516 | "cifs\0" | |
517 | "smbfs\0" | |
518 | "sshfs\0" | |
519 | "ncpfs\0" | |
520 | "ncp\0" | |
521 | "nfs\0" | |
522 | "nfs4\0" | |
523 | "gfs\0" | |
524 | "gfs2\0" | |
a44cb5cb ZJS |
525 | "glusterfs\0" |
526 | "pvfs2\0" /* OrangeFS */ | |
0a86e681 | 527 | "ocfs2\0" |
a44cb5cb | 528 | ; |
4e036b7a LP |
529 | |
530 | const char *x; | |
531 | ||
532 | x = startswith(fstype, "fuse."); | |
533 | if (x) | |
534 | fstype = x; | |
535 | ||
536 | return nulstr_contains(table, fstype); | |
537 | } | |
3f2c0bec LP |
538 | |
539 | int repeat_unmount(const char *path, int flags) { | |
540 | bool done = false; | |
541 | ||
542 | assert(path); | |
543 | ||
544 | /* If there are multiple mounts on a mount point, this | |
545 | * removes them all */ | |
546 | ||
547 | for (;;) { | |
548 | if (umount2(path, flags) < 0) { | |
549 | ||
550 | if (errno == EINVAL) | |
551 | return done; | |
552 | ||
553 | return -errno; | |
554 | } | |
555 | ||
556 | done = true; | |
557 | } | |
558 | } | |
c4b41707 AP |
559 | |
560 | const char* mode_to_inaccessible_node(mode_t mode) { | |
b3d1d516 AP |
561 | /* This function maps a node type to the correspondent inaccessible node type. |
562 | * Character and block inaccessible devices may not be created (because major=0 and minor=0), | |
563 | * in such case we map character and block devices to the inaccessible node type socket. */ | |
c4b41707 AP |
564 | switch(mode & S_IFMT) { |
565 | case S_IFREG: | |
566 | return "/run/systemd/inaccessible/reg"; | |
567 | case S_IFDIR: | |
568 | return "/run/systemd/inaccessible/dir"; | |
569 | case S_IFCHR: | |
b3d1d516 AP |
570 | if (access("/run/systemd/inaccessible/chr", F_OK) == 0) |
571 | return "/run/systemd/inaccessible/chr"; | |
572 | return "/run/systemd/inaccessible/sock"; | |
c4b41707 | 573 | case S_IFBLK: |
b3d1d516 AP |
574 | if (access("/run/systemd/inaccessible/blk", F_OK) == 0) |
575 | return "/run/systemd/inaccessible/blk"; | |
576 | return "/run/systemd/inaccessible/sock"; | |
c4b41707 AP |
577 | case S_IFIFO: |
578 | return "/run/systemd/inaccessible/fifo"; | |
579 | case S_IFSOCK: | |
580 | return "/run/systemd/inaccessible/sock"; | |
581 | } | |
582 | return NULL; | |
583 | } |