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e3478379 FF |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 ProFUSION embedded systems | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
e3478379 FF |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
e3478379 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
e3478379 FF |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <string.h> | |
25 | #include <sys/mount.h> | |
26 | #include <sys/swap.h> | |
e3478379 | 27 | #include <linux/loop.h> |
d48141ba | 28 | #include <linux/dm-ioctl.h> |
e3478379 FF |
29 | |
30 | #include "list.h" | |
31 | #include "mount-setup.h" | |
32 | #include "umount.h" | |
9eb977db | 33 | #include "path-util.h" |
e3478379 | 34 | #include "util.h" |
024f268d | 35 | #include "virt.h" |
1ca208fb ZJS |
36 | #include "libudev.h" |
37 | #include "udev-util.h" | |
e3478379 FF |
38 | |
39 | typedef struct MountPoint { | |
40 | char *path; | |
2d9a3397 | 41 | dev_t devnum; |
71fda00f | 42 | LIST_FIELDS(struct MountPoint, mount_point); |
e3478379 FF |
43 | } MountPoint; |
44 | ||
12aad1d0 LP |
45 | static void mount_point_free(MountPoint **head, MountPoint *m) { |
46 | assert(head); | |
47 | assert(m); | |
e3478379 | 48 | |
71fda00f | 49 | LIST_REMOVE(mount_point, *head, m); |
12aad1d0 LP |
50 | |
51 | free(m->path); | |
52 | free(m); | |
e3478379 FF |
53 | } |
54 | ||
12aad1d0 LP |
55 | static void mount_points_list_free(MountPoint **head) { |
56 | assert(head); | |
57 | ||
58 | while (*head) | |
59 | mount_point_free(head, *head); | |
e3478379 FF |
60 | } |
61 | ||
12aad1d0 | 62 | static int mount_points_list_get(MountPoint **head) { |
c3544e8d | 63 | _cleanup_fclose_ FILE *proc_self_mountinfo = NULL; |
e3478379 | 64 | unsigned int i; |
e3478379 | 65 | |
12aad1d0 LP |
66 | assert(head); |
67 | ||
c3544e8d LP |
68 | proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); |
69 | if (!proc_self_mountinfo) | |
e3478379 FF |
70 | return -errno; |
71 | ||
72 | for (i = 1;; i++) { | |
c3544e8d LP |
73 | _cleanup_free_ char *path = NULL; |
74 | char *p = NULL; | |
12aad1d0 | 75 | MountPoint *m; |
c3544e8d | 76 | int k; |
e3478379 | 77 | |
c3544e8d LP |
78 | k = fscanf(proc_self_mountinfo, |
79 | "%*s " /* (1) mount id */ | |
80 | "%*s " /* (2) parent id */ | |
81 | "%*s " /* (3) major:minor */ | |
82 | "%*s " /* (4) root */ | |
83 | "%ms " /* (5) mount point */ | |
84 | "%*s" /* (6) mount options */ | |
85 | "%*[^-]" /* (7) optional fields */ | |
86 | "- " /* (8) separator */ | |
87 | "%*s " /* (9) file system type */ | |
88 | "%*s" /* (10) mount source */ | |
89 | "%*s" /* (11) mount options 2 */ | |
90 | "%*[^\n]", /* some rubbish at the end */ | |
91 | &path); | |
92 | if (k != 1) { | |
e3478379 FF |
93 | if (k == EOF) |
94 | break; | |
95 | ||
96 | log_warning("Failed to parse /proc/self/mountinfo:%u.", i); | |
e3478379 FF |
97 | continue; |
98 | } | |
99 | ||
2054a5b8 | 100 | p = cunescape(path); |
c3544e8d LP |
101 | if (!p) |
102 | return -ENOMEM; | |
e3478379 | 103 | |
46108b3b LP |
104 | /* Ignore mount points we can't unmount because they |
105 | * are API or because we are keeping them open (like | |
874d3404 LP |
106 | * /dev/console). Also, ignore all mounts below API |
107 | * file systems, since they are likely virtual too, | |
108 | * and hence not worth spending time on. Also, in | |
109 | * unprivileged containers we might lack the rights to | |
110 | * unmount these things, hence don't bother. */ | |
46108b3b LP |
111 | if (mount_point_is_api(p) || |
112 | mount_point_ignore(p) || | |
874d3404 LP |
113 | path_startswith(p, "/dev") || |
114 | path_startswith(p, "/sys") || | |
115 | path_startswith(p, "/proc")) { | |
2054a5b8 LP |
116 | free(p); |
117 | continue; | |
118 | } | |
119 | ||
c3544e8d LP |
120 | m = new0(MountPoint, 1); |
121 | if (!m) { | |
2054a5b8 | 122 | free(p); |
c3544e8d | 123 | return -ENOMEM; |
e3478379 | 124 | } |
e3478379 | 125 | |
12aad1d0 | 126 | m->path = p; |
71fda00f | 127 | LIST_PREPEND(mount_point, *head, m); |
e3478379 FF |
128 | } |
129 | ||
c3544e8d | 130 | return 0; |
e3478379 FF |
131 | } |
132 | ||
12aad1d0 | 133 | static int swap_list_get(MountPoint **head) { |
e1d75803 | 134 | _cleanup_fclose_ FILE *proc_swaps = NULL; |
e3478379 | 135 | unsigned int i; |
e3478379 | 136 | |
12aad1d0 LP |
137 | assert(head); |
138 | ||
e3478379 | 139 | if (!(proc_swaps = fopen("/proc/swaps", "re"))) |
dee87d61 | 140 | return (errno == ENOENT) ? 0 : -errno; |
e3478379 FF |
141 | |
142 | (void) fscanf(proc_swaps, "%*s %*s %*s %*s %*s\n"); | |
143 | ||
144 | for (i = 2;; i++) { | |
145 | MountPoint *swap; | |
146 | char *dev = NULL, *d; | |
147 | int k; | |
148 | ||
149 | if ((k = fscanf(proc_swaps, | |
150 | "%ms " /* device/file */ | |
151 | "%*s " /* type of swap */ | |
152 | "%*s " /* swap size */ | |
153 | "%*s " /* used */ | |
154 | "%*s\n", /* priority */ | |
155 | &dev)) != 1) { | |
156 | ||
157 | if (k == EOF) | |
158 | break; | |
159 | ||
160 | log_warning("Failed to parse /proc/swaps:%u.", i); | |
161 | ||
162 | free(dev); | |
163 | continue; | |
164 | } | |
165 | ||
a87f0f72 | 166 | if (endswith(dev, " (deleted)")) { |
e3478379 FF |
167 | free(dev); |
168 | continue; | |
169 | } | |
170 | ||
171 | d = cunescape(dev); | |
172 | free(dev); | |
173 | ||
174 | if (!d) { | |
e1d75803 | 175 | return -ENOMEM; |
e3478379 FF |
176 | } |
177 | ||
2d9a3397 | 178 | if (!(swap = new0(MountPoint, 1))) { |
e3478379 | 179 | free(d); |
e1d75803 | 180 | return -ENOMEM; |
e3478379 FF |
181 | } |
182 | ||
2d9a3397 | 183 | swap->path = d; |
71fda00f | 184 | LIST_PREPEND(mount_point, *head, swap); |
e3478379 FF |
185 | } |
186 | ||
e1d75803 | 187 | return 0; |
e3478379 FF |
188 | } |
189 | ||
12aad1d0 | 190 | static int loopback_list_get(MountPoint **head) { |
1ca208fb | 191 | _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; |
e3478379 | 192 | struct udev_list_entry *item = NULL, *first = NULL; |
06acf2d4 LP |
193 | _cleanup_udev_unref_ struct udev *udev = NULL; |
194 | int r; | |
e3478379 | 195 | |
12aad1d0 LP |
196 | assert(head); |
197 | ||
1ca208fb ZJS |
198 | udev = udev_new(); |
199 | if (!udev) | |
200 | return -ENOMEM; | |
e3478379 | 201 | |
1ca208fb ZJS |
202 | e = udev_enumerate_new(udev); |
203 | if (!e) | |
204 | return -ENOMEM; | |
e3478379 | 205 | |
06acf2d4 LP |
206 | r = udev_enumerate_add_match_subsystem(e, "block"); |
207 | if (r < 0) | |
208 | return r; | |
209 | ||
210 | r = udev_enumerate_add_match_sysname(e, "loop*"); | |
211 | if (r < 0) | |
212 | return r; | |
213 | ||
214 | r = udev_enumerate_add_match_sysattr(e, "loop/backing_file", NULL); | |
215 | if (r < 0) | |
216 | return r; | |
e3478379 | 217 | |
06acf2d4 LP |
218 | r = udev_enumerate_scan_devices(e); |
219 | if (r < 0) | |
220 | return r; | |
e3478379 FF |
221 | |
222 | first = udev_enumerate_get_list_entry(e); | |
e3478379 FF |
223 | udev_list_entry_foreach(item, first) { |
224 | MountPoint *lb; | |
1ca208fb | 225 | _cleanup_udev_device_unref_ struct udev_device *d; |
e3478379 | 226 | char *loop; |
b854a7e7 | 227 | const char *dn; |
e3478379 | 228 | |
1ca208fb ZJS |
229 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); |
230 | if (!d) | |
231 | return -ENOMEM; | |
e3478379 | 232 | |
1ca208fb ZJS |
233 | dn = udev_device_get_devnode(d); |
234 | if (!dn) | |
2d9a3397 | 235 | continue; |
b854a7e7 | 236 | |
2d9a3397 | 237 | loop = strdup(dn); |
1ca208fb ZJS |
238 | if (!loop) |
239 | return -ENOMEM; | |
b854a7e7 | 240 | |
1ca208fb ZJS |
241 | lb = new0(MountPoint, 1); |
242 | if (!lb) { | |
e3478379 | 243 | free(loop); |
1ca208fb | 244 | return -ENOMEM; |
e3478379 FF |
245 | } |
246 | ||
2d9a3397 | 247 | lb->path = loop; |
71fda00f | 248 | LIST_PREPEND(mount_point, *head, lb); |
e3478379 FF |
249 | } |
250 | ||
1ca208fb | 251 | return 0; |
e3478379 FF |
252 | } |
253 | ||
12aad1d0 | 254 | static int dm_list_get(MountPoint **head) { |
1ca208fb | 255 | _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; |
d48141ba | 256 | struct udev_list_entry *item = NULL, *first = NULL; |
06acf2d4 LP |
257 | _cleanup_udev_unref_ struct udev *udev = NULL; |
258 | int r; | |
d48141ba | 259 | |
12aad1d0 LP |
260 | assert(head); |
261 | ||
1ca208fb ZJS |
262 | udev = udev_new(); |
263 | if (!udev) | |
264 | return -ENOMEM; | |
d48141ba | 265 | |
1ca208fb ZJS |
266 | e = udev_enumerate_new(udev); |
267 | if (!e) | |
268 | return -ENOMEM; | |
d48141ba | 269 | |
06acf2d4 LP |
270 | r = udev_enumerate_add_match_subsystem(e, "block"); |
271 | if (r < 0) | |
272 | return r; | |
d48141ba | 273 | |
06acf2d4 LP |
274 | r = udev_enumerate_add_match_sysname(e, "dm-*"); |
275 | if (r < 0) | |
276 | return r; | |
d48141ba | 277 | |
06acf2d4 LP |
278 | r = udev_enumerate_scan_devices(e); |
279 | if (r < 0) | |
280 | return r; | |
d48141ba | 281 | |
06acf2d4 | 282 | first = udev_enumerate_get_list_entry(e); |
d48141ba | 283 | udev_list_entry_foreach(item, first) { |
2d9a3397 | 284 | MountPoint *m; |
1ca208fb | 285 | _cleanup_udev_device_unref_ struct udev_device *d; |
2d9a3397 LP |
286 | dev_t devnum; |
287 | char *node; | |
288 | const char *dn; | |
d48141ba | 289 | |
1ca208fb ZJS |
290 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); |
291 | if (!d) | |
292 | return -ENOMEM; | |
d48141ba | 293 | |
2d9a3397 LP |
294 | devnum = udev_device_get_devnum(d); |
295 | dn = udev_device_get_devnode(d); | |
1ca208fb | 296 | if (major(devnum) == 0 || !dn) |
2d9a3397 | 297 | continue; |
d48141ba | 298 | |
2d9a3397 | 299 | node = strdup(dn); |
1ca208fb ZJS |
300 | if (!node) |
301 | return -ENOMEM; | |
d48141ba | 302 | |
1ca208fb ZJS |
303 | m = new(MountPoint, 1); |
304 | if (!m) { | |
2d9a3397 | 305 | free(node); |
1ca208fb | 306 | return -ENOMEM; |
d48141ba LP |
307 | } |
308 | ||
2d9a3397 LP |
309 | m->path = node; |
310 | m->devnum = devnum; | |
71fda00f | 311 | LIST_PREPEND(mount_point, *head, m); |
d48141ba LP |
312 | } |
313 | ||
1ca208fb | 314 | return 0; |
d48141ba LP |
315 | } |
316 | ||
e3478379 | 317 | static int delete_loopback(const char *device) { |
03e334a1 LP |
318 | _cleanup_close_ int fd = -1; |
319 | int r; | |
e3478379 | 320 | |
03e334a1 LP |
321 | fd = open(device, O_RDONLY|O_CLOEXEC); |
322 | if (fd < 0) | |
c4f8bd1a | 323 | return errno == ENOENT ? 0 : -errno; |
e3478379 | 324 | |
ce726252 | 325 | r = ioctl(fd, LOOP_CLR_FD, 0); |
12aad1d0 LP |
326 | if (r >= 0) |
327 | return 1; | |
328 | ||
ce726252 | 329 | /* ENXIO: not bound, so no error */ |
12aad1d0 LP |
330 | if (errno == ENXIO) |
331 | return 0; | |
332 | ||
333 | return -errno; | |
e3478379 FF |
334 | } |
335 | ||
2d9a3397 | 336 | static int delete_dm(dev_t devnum) { |
7fd1b19b | 337 | _cleanup_close_ int fd = -1; |
e62d8c39 | 338 | int r; |
b92bea5d ZJS |
339 | struct dm_ioctl dm = { |
340 | .version = {DM_VERSION_MAJOR, | |
341 | DM_VERSION_MINOR, | |
342 | DM_VERSION_PATCHLEVEL}, | |
343 | .data_size = sizeof(dm), | |
344 | .dev = devnum, | |
345 | }; | |
d48141ba | 346 | |
2d9a3397 | 347 | assert(major(devnum) != 0); |
d48141ba | 348 | |
e62d8c39 ZJS |
349 | fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC); |
350 | if (fd < 0) | |
d48141ba LP |
351 | return -errno; |
352 | ||
d48141ba | 353 | r = ioctl(fd, DM_DEV_REMOVE, &dm); |
d48141ba LP |
354 | return r >= 0 ? 0 : -errno; |
355 | } | |
356 | ||
31657718 | 357 | static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_error) { |
12aad1d0 LP |
358 | MountPoint *m, *n; |
359 | int n_failed = 0; | |
e3478379 | 360 | |
12aad1d0 LP |
361 | assert(head); |
362 | ||
363 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { | |
93bd1577 LP |
364 | |
365 | /* If we are in a container, don't attempt to | |
366 | read-only mount anything as that brings no real | |
367 | benefits, but might confuse the host, as we remount | |
368 | the superblock here, not the bind mound. */ | |
369 | if (detect_container(NULL) <= 0) { | |
370 | /* We always try to remount directories | |
371 | * read-only first, before we go on and umount | |
372 | * them. | |
373 | * | |
374 | * Mount points can be stacked. If a mount | |
375 | * point is stacked below / or /usr, we | |
ab06eef8 | 376 | * cannot umount or remount it directly, |
93bd1577 LP |
377 | * since there is no way to refer to the |
378 | * underlying mount. There's nothing we can do | |
379 | * about it for the general case, but we can | |
380 | * do something about it if it is aliased | |
381 | * somehwere else via a bind mount. If we | |
382 | * explicitly remount the super block of that | |
383 | * alias read-only we hence should be | |
384 | * relatively safe regarding keeping the fs we | |
385 | * can otherwise not see dirty. */ | |
386 | mount(NULL, m->path, NULL, MS_REMOUNT|MS_RDONLY, NULL); | |
387 | } | |
388 | ||
389 | /* Skip / and /usr since we cannot unmount that | |
5a6f9d23 HG |
390 | * anyway, since we are running from it. They have |
391 | * already been remounted ro. */ | |
9cacf564 LP |
392 | if (path_equal(m->path, "/") |
393 | #ifndef HAVE_SPLIT_USR | |
394 | || path_equal(m->path, "/usr") | |
395 | #endif | |
14088340 | 396 | ) |
e3478379 FF |
397 | continue; |
398 | ||
0c08f5cd LP |
399 | /* Trying to umount. We don't force here since we rely |
400 | * on busy NFS and FUSE file systems to return EBUSY | |
401 | * until we closed everything on top of them. */ | |
bce93b7a | 402 | log_info("Unmounting %s.", m->path); |
0c08f5cd | 403 | if (umount2(m->path, 0) == 0) { |
12aad1d0 LP |
404 | if (changed) |
405 | *changed = true; | |
406 | ||
407 | mount_point_free(head, m); | |
31657718 | 408 | } else if (log_error) { |
56f64d95 | 409 | log_warning_errno(errno, "Could not unmount %s: %m", m->path); |
12aad1d0 | 410 | n_failed++; |
e3478379 FF |
411 | } |
412 | } | |
413 | ||
12aad1d0 | 414 | return n_failed; |
e3478379 FF |
415 | } |
416 | ||
12aad1d0 LP |
417 | static int swap_points_list_off(MountPoint **head, bool *changed) { |
418 | MountPoint *m, *n; | |
419 | int n_failed = 0; | |
420 | ||
421 | assert(head); | |
e3478379 | 422 | |
12aad1d0 | 423 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
735e0712 | 424 | log_info("Deactivating swap %s.", m->path); |
12aad1d0 LP |
425 | if (swapoff(m->path) == 0) { |
426 | if (changed) | |
427 | *changed = true; | |
428 | ||
429 | mount_point_free(head, m); | |
430 | } else { | |
56f64d95 | 431 | log_warning_errno(errno, "Could not deactivate swap %s: %m", m->path); |
12aad1d0 | 432 | n_failed++; |
e3478379 FF |
433 | } |
434 | } | |
435 | ||
12aad1d0 | 436 | return n_failed; |
e3478379 FF |
437 | } |
438 | ||
12aad1d0 LP |
439 | static int loopback_points_list_detach(MountPoint **head, bool *changed) { |
440 | MountPoint *m, *n; | |
7fc942b2 LP |
441 | int n_failed = 0, k; |
442 | struct stat root_st; | |
12aad1d0 LP |
443 | |
444 | assert(head); | |
445 | ||
7fc942b2 LP |
446 | k = lstat("/", &root_st); |
447 | ||
12aad1d0 LP |
448 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
449 | int r; | |
7fc942b2 LP |
450 | struct stat loopback_st; |
451 | ||
452 | if (k >= 0 && | |
453 | major(root_st.st_dev) != 0 && | |
454 | lstat(m->path, &loopback_st) >= 0 && | |
455 | root_st.st_dev == loopback_st.st_rdev) { | |
456 | n_failed ++; | |
457 | continue; | |
458 | } | |
e3478379 | 459 | |
735e0712 | 460 | log_info("Detaching loopback %s.", m->path); |
bce93b7a MS |
461 | r = delete_loopback(m->path); |
462 | if (r >= 0) { | |
12aad1d0 LP |
463 | if (r > 0 && changed) |
464 | *changed = true; | |
465 | ||
466 | mount_point_free(head, m); | |
467 | } else { | |
56f64d95 | 468 | log_warning_errno(errno, "Could not detach loopback %s: %m", m->path); |
12aad1d0 | 469 | n_failed++; |
e3478379 FF |
470 | } |
471 | } | |
472 | ||
12aad1d0 | 473 | return n_failed; |
e3478379 FF |
474 | } |
475 | ||
12aad1d0 LP |
476 | static int dm_points_list_detach(MountPoint **head, bool *changed) { |
477 | MountPoint *m, *n; | |
7fc942b2 LP |
478 | int n_failed = 0, k; |
479 | struct stat root_st; | |
12aad1d0 LP |
480 | |
481 | assert(head); | |
482 | ||
7fc942b2 LP |
483 | k = lstat("/", &root_st); |
484 | ||
12aad1d0 LP |
485 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
486 | int r; | |
487 | ||
7fc942b2 LP |
488 | if (k >= 0 && |
489 | major(root_st.st_dev) != 0 && | |
490 | root_st.st_dev == m->devnum) { | |
491 | n_failed ++; | |
492 | continue; | |
493 | } | |
494 | ||
735e0712 | 495 | log_info("Detaching DM %u:%u.", major(m->devnum), minor(m->devnum)); |
bce93b7a MS |
496 | r = delete_dm(m->devnum); |
497 | if (r >= 0) { | |
c6784066 | 498 | if (changed) |
12aad1d0 | 499 | *changed = true; |
d48141ba | 500 | |
12aad1d0 LP |
501 | mount_point_free(head, m); |
502 | } else { | |
56f64d95 | 503 | log_warning_errno(errno, "Could not detach DM %s: %m", m->path); |
12aad1d0 | 504 | n_failed++; |
d48141ba LP |
505 | } |
506 | } | |
507 | ||
12aad1d0 | 508 | return n_failed; |
d48141ba LP |
509 | } |
510 | ||
12aad1d0 | 511 | int umount_all(bool *changed) { |
e3478379 | 512 | int r; |
6f7f51f7 | 513 | bool umount_changed; |
e3478379 FF |
514 | LIST_HEAD(MountPoint, mp_list_head); |
515 | ||
71fda00f | 516 | LIST_HEAD_INIT(mp_list_head); |
e3478379 FF |
517 | r = mount_points_list_get(&mp_list_head); |
518 | if (r < 0) | |
519 | goto end; | |
520 | ||
6f7f51f7 HH |
521 | /* retry umount, until nothing can be umounted anymore */ |
522 | do { | |
523 | umount_changed = false; | |
3e085b6c LP |
524 | |
525 | mount_points_list_umount(&mp_list_head, &umount_changed, false); | |
6f7f51f7 HH |
526 | if (umount_changed) |
527 | *changed = true; | |
3e085b6c LP |
528 | |
529 | } while (umount_changed); | |
530 | ||
31657718 HH |
531 | /* umount one more time with logging enabled */ |
532 | r = mount_points_list_umount(&mp_list_head, &umount_changed, true); | |
e3478379 FF |
533 | if (r <= 0) |
534 | goto end; | |
535 | ||
e3478379 FF |
536 | end: |
537 | mount_points_list_free(&mp_list_head); | |
538 | ||
539 | return r; | |
540 | } | |
541 | ||
12aad1d0 | 542 | int swapoff_all(bool *changed) { |
e3478379 FF |
543 | int r; |
544 | LIST_HEAD(MountPoint, swap_list_head); | |
545 | ||
71fda00f | 546 | LIST_HEAD_INIT(swap_list_head); |
e3478379 FF |
547 | |
548 | r = swap_list_get(&swap_list_head); | |
549 | if (r < 0) | |
550 | goto end; | |
551 | ||
12aad1d0 | 552 | r = swap_points_list_off(&swap_list_head, changed); |
e3478379 FF |
553 | |
554 | end: | |
555 | mount_points_list_free(&swap_list_head); | |
556 | ||
557 | return r; | |
558 | } | |
559 | ||
12aad1d0 | 560 | int loopback_detach_all(bool *changed) { |
e3478379 FF |
561 | int r; |
562 | LIST_HEAD(MountPoint, loopback_list_head); | |
563 | ||
71fda00f | 564 | LIST_HEAD_INIT(loopback_list_head); |
e3478379 FF |
565 | |
566 | r = loopback_list_get(&loopback_list_head); | |
567 | if (r < 0) | |
568 | goto end; | |
569 | ||
12aad1d0 | 570 | r = loopback_points_list_detach(&loopback_list_head, changed); |
e3478379 FF |
571 | |
572 | end: | |
573 | mount_points_list_free(&loopback_list_head); | |
574 | ||
575 | return r; | |
576 | } | |
d48141ba | 577 | |
12aad1d0 | 578 | int dm_detach_all(bool *changed) { |
d48141ba LP |
579 | int r; |
580 | LIST_HEAD(MountPoint, dm_list_head); | |
581 | ||
71fda00f | 582 | LIST_HEAD_INIT(dm_list_head); |
d48141ba LP |
583 | |
584 | r = dm_list_get(&dm_list_head); | |
585 | if (r < 0) | |
586 | goto end; | |
587 | ||
12aad1d0 | 588 | r = dm_points_list_detach(&dm_list_head, changed); |
d48141ba LP |
589 | |
590 | end: | |
591 | mount_points_list_free(&dm_list_head); | |
592 | ||
593 | return r; | |
594 | } |