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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> | |
4f5dd394 LP |
24 | #include <linux/dm-ioctl.h> |
25 | #include <linux/loop.h> | |
e3478379 FF |
26 | #include <string.h> |
27 | #include <sys/mount.h> | |
28 | #include <sys/swap.h> | |
e3478379 | 29 | |
b4bbcaa9 TA |
30 | #include "libudev.h" |
31 | ||
b5efdb8a | 32 | #include "alloc-util.h" |
07630cea | 33 | #include "escape.h" |
3ffd4af2 | 34 | #include "fd-util.h" |
471b48ed | 35 | #include "fstab-util.h" |
e3478379 FF |
36 | #include "list.h" |
37 | #include "mount-setup.h" | |
9eb977db | 38 | #include "path-util.h" |
07630cea | 39 | #include "string-util.h" |
4f5dd394 | 40 | #include "udev-util.h" |
3ffd4af2 | 41 | #include "umount.h" |
e3478379 | 42 | #include "util.h" |
024f268d | 43 | #include "virt.h" |
e3478379 FF |
44 | |
45 | typedef struct MountPoint { | |
46 | char *path; | |
471b48ed | 47 | char *options; |
2d9a3397 | 48 | dev_t devnum; |
71fda00f | 49 | LIST_FIELDS(struct MountPoint, mount_point); |
e3478379 FF |
50 | } MountPoint; |
51 | ||
12aad1d0 LP |
52 | static void mount_point_free(MountPoint **head, MountPoint *m) { |
53 | assert(head); | |
54 | assert(m); | |
e3478379 | 55 | |
71fda00f | 56 | LIST_REMOVE(mount_point, *head, m); |
12aad1d0 LP |
57 | |
58 | free(m->path); | |
59 | free(m); | |
e3478379 FF |
60 | } |
61 | ||
12aad1d0 LP |
62 | static void mount_points_list_free(MountPoint **head) { |
63 | assert(head); | |
64 | ||
65 | while (*head) | |
66 | mount_point_free(head, *head); | |
e3478379 FF |
67 | } |
68 | ||
12aad1d0 | 69 | static int mount_points_list_get(MountPoint **head) { |
c3544e8d | 70 | _cleanup_fclose_ FILE *proc_self_mountinfo = NULL; |
e3478379 | 71 | unsigned int i; |
527b7a42 | 72 | int r; |
e3478379 | 73 | |
12aad1d0 LP |
74 | assert(head); |
75 | ||
c3544e8d LP |
76 | proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); |
77 | if (!proc_self_mountinfo) | |
e3478379 FF |
78 | return -errno; |
79 | ||
80 | for (i = 1;; i++) { | |
471b48ed | 81 | _cleanup_free_ char *path = NULL, *options = NULL; |
c3544e8d | 82 | char *p = NULL; |
12aad1d0 | 83 | MountPoint *m; |
c3544e8d | 84 | int k; |
e3478379 | 85 | |
c3544e8d LP |
86 | k = fscanf(proc_self_mountinfo, |
87 | "%*s " /* (1) mount id */ | |
88 | "%*s " /* (2) parent id */ | |
89 | "%*s " /* (3) major:minor */ | |
90 | "%*s " /* (4) root */ | |
91 | "%ms " /* (5) mount point */ | |
471b48ed | 92 | "%*s" /* (6) mount flags */ |
c3544e8d LP |
93 | "%*[^-]" /* (7) optional fields */ |
94 | "- " /* (8) separator */ | |
95 | "%*s " /* (9) file system type */ | |
96 | "%*s" /* (10) mount source */ | |
471b48ed | 97 | "%ms" /* (11) mount options */ |
c3544e8d | 98 | "%*[^\n]", /* some rubbish at the end */ |
471b48ed JJ |
99 | &path, &options); |
100 | if (k != 2) { | |
e3478379 FF |
101 | if (k == EOF) |
102 | break; | |
103 | ||
104 | log_warning("Failed to parse /proc/self/mountinfo:%u.", i); | |
e3478379 FF |
105 | continue; |
106 | } | |
107 | ||
527b7a42 LP |
108 | r = cunescape(path, UNESCAPE_RELAX, &p); |
109 | if (r < 0) | |
110 | return r; | |
e3478379 | 111 | |
46108b3b LP |
112 | /* Ignore mount points we can't unmount because they |
113 | * are API or because we are keeping them open (like | |
874d3404 LP |
114 | * /dev/console). Also, ignore all mounts below API |
115 | * file systems, since they are likely virtual too, | |
116 | * and hence not worth spending time on. Also, in | |
117 | * unprivileged containers we might lack the rights to | |
118 | * unmount these things, hence don't bother. */ | |
46108b3b LP |
119 | if (mount_point_is_api(p) || |
120 | mount_point_ignore(p) || | |
874d3404 LP |
121 | path_startswith(p, "/dev") || |
122 | path_startswith(p, "/sys") || | |
123 | path_startswith(p, "/proc")) { | |
2054a5b8 LP |
124 | free(p); |
125 | continue; | |
126 | } | |
127 | ||
c3544e8d LP |
128 | m = new0(MountPoint, 1); |
129 | if (!m) { | |
2054a5b8 | 130 | free(p); |
c3544e8d | 131 | return -ENOMEM; |
e3478379 | 132 | } |
e3478379 | 133 | |
12aad1d0 | 134 | m->path = p; |
471b48ed JJ |
135 | m->options = options; |
136 | options = NULL; | |
137 | ||
71fda00f | 138 | LIST_PREPEND(mount_point, *head, m); |
e3478379 FF |
139 | } |
140 | ||
c3544e8d | 141 | return 0; |
e3478379 FF |
142 | } |
143 | ||
12aad1d0 | 144 | static int swap_list_get(MountPoint **head) { |
e1d75803 | 145 | _cleanup_fclose_ FILE *proc_swaps = NULL; |
e3478379 | 146 | unsigned int i; |
527b7a42 | 147 | int r; |
e3478379 | 148 | |
12aad1d0 LP |
149 | assert(head); |
150 | ||
527b7a42 LP |
151 | proc_swaps = fopen("/proc/swaps", "re"); |
152 | if (!proc_swaps) | |
dee87d61 | 153 | return (errno == ENOENT) ? 0 : -errno; |
e3478379 FF |
154 | |
155 | (void) fscanf(proc_swaps, "%*s %*s %*s %*s %*s\n"); | |
156 | ||
157 | for (i = 2;; i++) { | |
158 | MountPoint *swap; | |
159 | char *dev = NULL, *d; | |
160 | int k; | |
161 | ||
527b7a42 LP |
162 | k = fscanf(proc_swaps, |
163 | "%ms " /* device/file */ | |
164 | "%*s " /* type of swap */ | |
165 | "%*s " /* swap size */ | |
166 | "%*s " /* used */ | |
167 | "%*s\n", /* priority */ | |
168 | &dev); | |
e3478379 | 169 | |
527b7a42 | 170 | if (k != 1) { |
e3478379 FF |
171 | if (k == EOF) |
172 | break; | |
173 | ||
174 | log_warning("Failed to parse /proc/swaps:%u.", i); | |
e3478379 FF |
175 | free(dev); |
176 | continue; | |
177 | } | |
178 | ||
a87f0f72 | 179 | if (endswith(dev, " (deleted)")) { |
e3478379 FF |
180 | free(dev); |
181 | continue; | |
182 | } | |
183 | ||
527b7a42 | 184 | r = cunescape(dev, UNESCAPE_RELAX, &d); |
e3478379 | 185 | free(dev); |
527b7a42 LP |
186 | if (r < 0) |
187 | return r; | |
e3478379 | 188 | |
527b7a42 LP |
189 | swap = new0(MountPoint, 1); |
190 | if (!swap) { | |
e3478379 | 191 | free(d); |
e1d75803 | 192 | return -ENOMEM; |
e3478379 FF |
193 | } |
194 | ||
2d9a3397 | 195 | swap->path = d; |
71fda00f | 196 | LIST_PREPEND(mount_point, *head, swap); |
e3478379 FF |
197 | } |
198 | ||
e1d75803 | 199 | return 0; |
e3478379 FF |
200 | } |
201 | ||
12aad1d0 | 202 | static int loopback_list_get(MountPoint **head) { |
1ca208fb | 203 | _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; |
e3478379 | 204 | struct udev_list_entry *item = NULL, *first = NULL; |
06acf2d4 LP |
205 | _cleanup_udev_unref_ struct udev *udev = NULL; |
206 | int r; | |
e3478379 | 207 | |
12aad1d0 LP |
208 | assert(head); |
209 | ||
1ca208fb ZJS |
210 | udev = udev_new(); |
211 | if (!udev) | |
212 | return -ENOMEM; | |
e3478379 | 213 | |
1ca208fb ZJS |
214 | e = udev_enumerate_new(udev); |
215 | if (!e) | |
216 | return -ENOMEM; | |
e3478379 | 217 | |
06acf2d4 LP |
218 | r = udev_enumerate_add_match_subsystem(e, "block"); |
219 | if (r < 0) | |
220 | return r; | |
221 | ||
222 | r = udev_enumerate_add_match_sysname(e, "loop*"); | |
223 | if (r < 0) | |
224 | return r; | |
225 | ||
226 | r = udev_enumerate_add_match_sysattr(e, "loop/backing_file", NULL); | |
227 | if (r < 0) | |
228 | return r; | |
e3478379 | 229 | |
06acf2d4 LP |
230 | r = udev_enumerate_scan_devices(e); |
231 | if (r < 0) | |
232 | return r; | |
e3478379 FF |
233 | |
234 | first = udev_enumerate_get_list_entry(e); | |
e3478379 FF |
235 | udev_list_entry_foreach(item, first) { |
236 | MountPoint *lb; | |
1ca208fb | 237 | _cleanup_udev_device_unref_ struct udev_device *d; |
e3478379 | 238 | char *loop; |
b854a7e7 | 239 | const char *dn; |
e3478379 | 240 | |
1ca208fb ZJS |
241 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); |
242 | if (!d) | |
243 | return -ENOMEM; | |
e3478379 | 244 | |
1ca208fb ZJS |
245 | dn = udev_device_get_devnode(d); |
246 | if (!dn) | |
2d9a3397 | 247 | continue; |
b854a7e7 | 248 | |
2d9a3397 | 249 | loop = strdup(dn); |
1ca208fb ZJS |
250 | if (!loop) |
251 | return -ENOMEM; | |
b854a7e7 | 252 | |
1ca208fb ZJS |
253 | lb = new0(MountPoint, 1); |
254 | if (!lb) { | |
e3478379 | 255 | free(loop); |
1ca208fb | 256 | return -ENOMEM; |
e3478379 FF |
257 | } |
258 | ||
2d9a3397 | 259 | lb->path = loop; |
71fda00f | 260 | LIST_PREPEND(mount_point, *head, lb); |
e3478379 FF |
261 | } |
262 | ||
1ca208fb | 263 | return 0; |
e3478379 FF |
264 | } |
265 | ||
12aad1d0 | 266 | static int dm_list_get(MountPoint **head) { |
1ca208fb | 267 | _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; |
d48141ba | 268 | struct udev_list_entry *item = NULL, *first = NULL; |
06acf2d4 LP |
269 | _cleanup_udev_unref_ struct udev *udev = NULL; |
270 | int r; | |
d48141ba | 271 | |
12aad1d0 LP |
272 | assert(head); |
273 | ||
1ca208fb ZJS |
274 | udev = udev_new(); |
275 | if (!udev) | |
276 | return -ENOMEM; | |
d48141ba | 277 | |
1ca208fb ZJS |
278 | e = udev_enumerate_new(udev); |
279 | if (!e) | |
280 | return -ENOMEM; | |
d48141ba | 281 | |
06acf2d4 LP |
282 | r = udev_enumerate_add_match_subsystem(e, "block"); |
283 | if (r < 0) | |
284 | return r; | |
d48141ba | 285 | |
06acf2d4 LP |
286 | r = udev_enumerate_add_match_sysname(e, "dm-*"); |
287 | if (r < 0) | |
288 | return r; | |
d48141ba | 289 | |
06acf2d4 LP |
290 | r = udev_enumerate_scan_devices(e); |
291 | if (r < 0) | |
292 | return r; | |
d48141ba | 293 | |
06acf2d4 | 294 | first = udev_enumerate_get_list_entry(e); |
d48141ba | 295 | udev_list_entry_foreach(item, first) { |
2d9a3397 | 296 | MountPoint *m; |
1ca208fb | 297 | _cleanup_udev_device_unref_ struct udev_device *d; |
2d9a3397 LP |
298 | dev_t devnum; |
299 | char *node; | |
300 | const char *dn; | |
d48141ba | 301 | |
1ca208fb ZJS |
302 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); |
303 | if (!d) | |
304 | return -ENOMEM; | |
d48141ba | 305 | |
2d9a3397 LP |
306 | devnum = udev_device_get_devnum(d); |
307 | dn = udev_device_get_devnode(d); | |
1ca208fb | 308 | if (major(devnum) == 0 || !dn) |
2d9a3397 | 309 | continue; |
d48141ba | 310 | |
2d9a3397 | 311 | node = strdup(dn); |
1ca208fb ZJS |
312 | if (!node) |
313 | return -ENOMEM; | |
d48141ba | 314 | |
1ca208fb ZJS |
315 | m = new(MountPoint, 1); |
316 | if (!m) { | |
2d9a3397 | 317 | free(node); |
1ca208fb | 318 | return -ENOMEM; |
d48141ba LP |
319 | } |
320 | ||
2d9a3397 LP |
321 | m->path = node; |
322 | m->devnum = devnum; | |
71fda00f | 323 | LIST_PREPEND(mount_point, *head, m); |
d48141ba LP |
324 | } |
325 | ||
1ca208fb | 326 | return 0; |
d48141ba LP |
327 | } |
328 | ||
e3478379 | 329 | static int delete_loopback(const char *device) { |
03e334a1 LP |
330 | _cleanup_close_ int fd = -1; |
331 | int r; | |
e3478379 | 332 | |
03e334a1 LP |
333 | fd = open(device, O_RDONLY|O_CLOEXEC); |
334 | if (fd < 0) | |
c4f8bd1a | 335 | return errno == ENOENT ? 0 : -errno; |
e3478379 | 336 | |
ce726252 | 337 | r = ioctl(fd, LOOP_CLR_FD, 0); |
12aad1d0 LP |
338 | if (r >= 0) |
339 | return 1; | |
340 | ||
ce726252 | 341 | /* ENXIO: not bound, so no error */ |
12aad1d0 LP |
342 | if (errno == ENXIO) |
343 | return 0; | |
344 | ||
345 | return -errno; | |
e3478379 FF |
346 | } |
347 | ||
2d9a3397 | 348 | static int delete_dm(dev_t devnum) { |
7fd1b19b | 349 | _cleanup_close_ int fd = -1; |
e62d8c39 | 350 | int r; |
b92bea5d ZJS |
351 | struct dm_ioctl dm = { |
352 | .version = {DM_VERSION_MAJOR, | |
353 | DM_VERSION_MINOR, | |
354 | DM_VERSION_PATCHLEVEL}, | |
355 | .data_size = sizeof(dm), | |
356 | .dev = devnum, | |
357 | }; | |
d48141ba | 358 | |
2d9a3397 | 359 | assert(major(devnum) != 0); |
d48141ba | 360 | |
e62d8c39 ZJS |
361 | fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC); |
362 | if (fd < 0) | |
d48141ba LP |
363 | return -errno; |
364 | ||
d48141ba | 365 | r = ioctl(fd, DM_DEV_REMOVE, &dm); |
d48141ba LP |
366 | return r >= 0 ? 0 : -errno; |
367 | } | |
368 | ||
31657718 | 369 | static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_error) { |
12aad1d0 LP |
370 | MountPoint *m, *n; |
371 | int n_failed = 0; | |
e3478379 | 372 | |
12aad1d0 LP |
373 | assert(head); |
374 | ||
375 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { | |
93bd1577 LP |
376 | |
377 | /* If we are in a container, don't attempt to | |
378 | read-only mount anything as that brings no real | |
379 | benefits, but might confuse the host, as we remount | |
380 | the superblock here, not the bind mound. */ | |
75f86906 | 381 | if (detect_container() <= 0) { |
471b48ed JJ |
382 | _cleanup_free_ char *options = NULL; |
383 | /* MS_REMOUNT requires that the data parameter | |
384 | * should be the same from the original mount | |
385 | * except for the desired changes. Since we want | |
386 | * to remount read-only, we should filter out | |
387 | * rw (and ro too, because it confuses the kernel) */ | |
388 | (void) fstab_filter_options(m->options, "rw\0ro\0", NULL, NULL, &options); | |
389 | ||
93bd1577 LP |
390 | /* We always try to remount directories |
391 | * read-only first, before we go on and umount | |
392 | * them. | |
393 | * | |
394 | * Mount points can be stacked. If a mount | |
395 | * point is stacked below / or /usr, we | |
ab06eef8 | 396 | * cannot umount or remount it directly, |
93bd1577 LP |
397 | * since there is no way to refer to the |
398 | * underlying mount. There's nothing we can do | |
399 | * about it for the general case, but we can | |
400 | * do something about it if it is aliased | |
401 | * somehwere else via a bind mount. If we | |
402 | * explicitly remount the super block of that | |
403 | * alias read-only we hence should be | |
404 | * relatively safe regarding keeping the fs we | |
405 | * can otherwise not see dirty. */ | |
471b48ed JJ |
406 | log_info("Remounting '%s' read-only with options '%s'.", m->path, options); |
407 | (void) mount(NULL, m->path, NULL, MS_REMOUNT|MS_RDONLY, options); | |
93bd1577 LP |
408 | } |
409 | ||
410 | /* Skip / and /usr since we cannot unmount that | |
5a6f9d23 HG |
411 | * anyway, since we are running from it. They have |
412 | * already been remounted ro. */ | |
9cacf564 LP |
413 | if (path_equal(m->path, "/") |
414 | #ifndef HAVE_SPLIT_USR | |
415 | || path_equal(m->path, "/usr") | |
416 | #endif | |
14088340 | 417 | ) |
e3478379 FF |
418 | continue; |
419 | ||
0c08f5cd LP |
420 | /* Trying to umount. We don't force here since we rely |
421 | * on busy NFS and FUSE file systems to return EBUSY | |
422 | * until we closed everything on top of them. */ | |
bce93b7a | 423 | log_info("Unmounting %s.", m->path); |
0c08f5cd | 424 | if (umount2(m->path, 0) == 0) { |
12aad1d0 LP |
425 | if (changed) |
426 | *changed = true; | |
427 | ||
428 | mount_point_free(head, m); | |
31657718 | 429 | } else if (log_error) { |
56f64d95 | 430 | log_warning_errno(errno, "Could not unmount %s: %m", m->path); |
12aad1d0 | 431 | n_failed++; |
e3478379 FF |
432 | } |
433 | } | |
434 | ||
12aad1d0 | 435 | return n_failed; |
e3478379 FF |
436 | } |
437 | ||
12aad1d0 LP |
438 | static int swap_points_list_off(MountPoint **head, bool *changed) { |
439 | MountPoint *m, *n; | |
440 | int n_failed = 0; | |
441 | ||
442 | assert(head); | |
e3478379 | 443 | |
12aad1d0 | 444 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
735e0712 | 445 | log_info("Deactivating swap %s.", m->path); |
12aad1d0 LP |
446 | if (swapoff(m->path) == 0) { |
447 | if (changed) | |
448 | *changed = true; | |
449 | ||
450 | mount_point_free(head, m); | |
451 | } else { | |
56f64d95 | 452 | log_warning_errno(errno, "Could not deactivate swap %s: %m", m->path); |
12aad1d0 | 453 | n_failed++; |
e3478379 FF |
454 | } |
455 | } | |
456 | ||
12aad1d0 | 457 | return n_failed; |
e3478379 FF |
458 | } |
459 | ||
12aad1d0 LP |
460 | static int loopback_points_list_detach(MountPoint **head, bool *changed) { |
461 | MountPoint *m, *n; | |
7fc942b2 LP |
462 | int n_failed = 0, k; |
463 | struct stat root_st; | |
12aad1d0 LP |
464 | |
465 | assert(head); | |
466 | ||
7fc942b2 LP |
467 | k = lstat("/", &root_st); |
468 | ||
12aad1d0 LP |
469 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
470 | int r; | |
7fc942b2 LP |
471 | struct stat loopback_st; |
472 | ||
473 | if (k >= 0 && | |
474 | major(root_st.st_dev) != 0 && | |
475 | lstat(m->path, &loopback_st) >= 0 && | |
476 | root_st.st_dev == loopback_st.st_rdev) { | |
477 | n_failed ++; | |
478 | continue; | |
479 | } | |
e3478379 | 480 | |
735e0712 | 481 | log_info("Detaching loopback %s.", m->path); |
bce93b7a MS |
482 | r = delete_loopback(m->path); |
483 | if (r >= 0) { | |
12aad1d0 LP |
484 | if (r > 0 && changed) |
485 | *changed = true; | |
486 | ||
487 | mount_point_free(head, m); | |
488 | } else { | |
56f64d95 | 489 | log_warning_errno(errno, "Could not detach loopback %s: %m", m->path); |
12aad1d0 | 490 | n_failed++; |
e3478379 FF |
491 | } |
492 | } | |
493 | ||
12aad1d0 | 494 | return n_failed; |
e3478379 FF |
495 | } |
496 | ||
12aad1d0 LP |
497 | static int dm_points_list_detach(MountPoint **head, bool *changed) { |
498 | MountPoint *m, *n; | |
7fc942b2 LP |
499 | int n_failed = 0, k; |
500 | struct stat root_st; | |
12aad1d0 LP |
501 | |
502 | assert(head); | |
503 | ||
7fc942b2 LP |
504 | k = lstat("/", &root_st); |
505 | ||
12aad1d0 LP |
506 | LIST_FOREACH_SAFE(mount_point, m, n, *head) { |
507 | int r; | |
508 | ||
7fc942b2 LP |
509 | if (k >= 0 && |
510 | major(root_st.st_dev) != 0 && | |
511 | root_st.st_dev == m->devnum) { | |
512 | n_failed ++; | |
513 | continue; | |
514 | } | |
515 | ||
735e0712 | 516 | log_info("Detaching DM %u:%u.", major(m->devnum), minor(m->devnum)); |
bce93b7a MS |
517 | r = delete_dm(m->devnum); |
518 | if (r >= 0) { | |
c6784066 | 519 | if (changed) |
12aad1d0 | 520 | *changed = true; |
d48141ba | 521 | |
12aad1d0 LP |
522 | mount_point_free(head, m); |
523 | } else { | |
56f64d95 | 524 | log_warning_errno(errno, "Could not detach DM %s: %m", m->path); |
12aad1d0 | 525 | n_failed++; |
d48141ba LP |
526 | } |
527 | } | |
528 | ||
12aad1d0 | 529 | return n_failed; |
d48141ba LP |
530 | } |
531 | ||
12aad1d0 | 532 | int umount_all(bool *changed) { |
e3478379 | 533 | int r; |
6f7f51f7 | 534 | bool umount_changed; |
e3478379 FF |
535 | LIST_HEAD(MountPoint, mp_list_head); |
536 | ||
71fda00f | 537 | LIST_HEAD_INIT(mp_list_head); |
e3478379 FF |
538 | r = mount_points_list_get(&mp_list_head); |
539 | if (r < 0) | |
540 | goto end; | |
541 | ||
6f7f51f7 HH |
542 | /* retry umount, until nothing can be umounted anymore */ |
543 | do { | |
544 | umount_changed = false; | |
3e085b6c LP |
545 | |
546 | mount_points_list_umount(&mp_list_head, &umount_changed, false); | |
6f7f51f7 HH |
547 | if (umount_changed) |
548 | *changed = true; | |
3e085b6c LP |
549 | |
550 | } while (umount_changed); | |
551 | ||
31657718 HH |
552 | /* umount one more time with logging enabled */ |
553 | r = mount_points_list_umount(&mp_list_head, &umount_changed, true); | |
e3478379 FF |
554 | if (r <= 0) |
555 | goto end; | |
556 | ||
e3478379 FF |
557 | end: |
558 | mount_points_list_free(&mp_list_head); | |
559 | ||
560 | return r; | |
561 | } | |
562 | ||
12aad1d0 | 563 | int swapoff_all(bool *changed) { |
e3478379 FF |
564 | int r; |
565 | LIST_HEAD(MountPoint, swap_list_head); | |
566 | ||
71fda00f | 567 | LIST_HEAD_INIT(swap_list_head); |
e3478379 FF |
568 | |
569 | r = swap_list_get(&swap_list_head); | |
570 | if (r < 0) | |
571 | goto end; | |
572 | ||
12aad1d0 | 573 | r = swap_points_list_off(&swap_list_head, changed); |
e3478379 FF |
574 | |
575 | end: | |
576 | mount_points_list_free(&swap_list_head); | |
577 | ||
578 | return r; | |
579 | } | |
580 | ||
12aad1d0 | 581 | int loopback_detach_all(bool *changed) { |
e3478379 FF |
582 | int r; |
583 | LIST_HEAD(MountPoint, loopback_list_head); | |
584 | ||
71fda00f | 585 | LIST_HEAD_INIT(loopback_list_head); |
e3478379 FF |
586 | |
587 | r = loopback_list_get(&loopback_list_head); | |
588 | if (r < 0) | |
589 | goto end; | |
590 | ||
12aad1d0 | 591 | r = loopback_points_list_detach(&loopback_list_head, changed); |
e3478379 FF |
592 | |
593 | end: | |
594 | mount_points_list_free(&loopback_list_head); | |
595 | ||
596 | return r; | |
597 | } | |
d48141ba | 598 | |
12aad1d0 | 599 | int dm_detach_all(bool *changed) { |
d48141ba LP |
600 | int r; |
601 | LIST_HEAD(MountPoint, dm_list_head); | |
602 | ||
71fda00f | 603 | LIST_HEAD_INIT(dm_list_head); |
d48141ba LP |
604 | |
605 | r = dm_list_get(&dm_list_head); | |
606 | if (r < 0) | |
607 | goto end; | |
608 | ||
12aad1d0 | 609 | r = dm_points_list_detach(&dm_list_head, changed); |
d48141ba LP |
610 | |
611 | end: | |
612 | mount_points_list_free(&dm_list_head); | |
613 | ||
614 | return r; | |
615 | } |