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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
a7334b09 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
5cb5a6ff | 21 | #include <errno.h> |
4f5dd394 | 22 | #include <signal.h> |
b08d03ff | 23 | #include <stdio.h> |
ef734fd6 | 24 | #include <sys/epoll.h> |
5cb5a6ff | 25 | |
20ad4cfd | 26 | #include "sd-messages.h" |
4f5dd394 | 27 | |
b5efdb8a | 28 | #include "alloc-util.h" |
4139c1b2 | 29 | #include "dbus-mount.h" |
4f5dd394 | 30 | #include "escape.h" |
9a57c629 | 31 | #include "exit-status.h" |
f97b34a6 | 32 | #include "format-util.h" |
4f5dd394 LP |
33 | #include "fstab-util.h" |
34 | #include "log.h" | |
35 | #include "manager.h" | |
36 | #include "mkdir.h" | |
37 | #include "mount-setup.h" | |
4e036b7a | 38 | #include "mount-util.h" |
4f5dd394 | 39 | #include "mount.h" |
6bedfcbb | 40 | #include "parse-util.h" |
4f5dd394 | 41 | #include "path-util.h" |
7b3e062c | 42 | #include "process-util.h" |
4f5dd394 | 43 | #include "special.h" |
8b43440b | 44 | #include "string-table.h" |
b5efdb8a | 45 | #include "string-util.h" |
4f5dd394 LP |
46 | #include "strv.h" |
47 | #include "unit-name.h" | |
48 | #include "unit.h" | |
5cb5a6ff | 49 | |
7d54a03a LP |
50 | #define RETRY_UMOUNT_MAX 32 |
51 | ||
4e920142 ZJS |
52 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
53 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
54 | ||
f50e0a01 LP |
55 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
56 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
57 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 58 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 59 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 60 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 61 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
62 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
63 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
64 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
65 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 66 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 67 | }; |
5cb5a6ff | 68 | |
718db961 LP |
69 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
70 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
71 | ||
c634f3d2 LP |
72 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
73 | return IN_SET(state, | |
74 | MOUNT_MOUNTING, | |
75 | MOUNT_MOUNTING_DONE, | |
76 | MOUNT_REMOUNTING, | |
77 | MOUNT_REMOUNTING_SIGTERM, | |
78 | MOUNT_REMOUNTING_SIGKILL, | |
79 | MOUNT_UNMOUNTING, | |
80 | MOUNT_UNMOUNTING_SIGTERM, | |
81 | MOUNT_UNMOUNTING_SIGKILL); | |
82 | } | |
83 | ||
affc3d83 | 84 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 85 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
86 | return true; |
87 | ||
affc3d83 | 88 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
89 | return true; |
90 | ||
91 | return false; | |
92 | } | |
93 | ||
e6a7b9f4 | 94 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
95 | assert(p); |
96 | ||
97 | return mount_needs_network(p->options, p->fstype); | |
98 | } | |
99 | ||
d3bd0986 MK |
100 | static bool mount_is_loop(const MountParameters *p) { |
101 | assert(p); | |
102 | ||
103 | if (fstab_test_option(p->options, "loop\0")) | |
104 | return true; | |
105 | ||
106 | return false; | |
107 | } | |
108 | ||
e6a7b9f4 | 109 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
110 | assert(p); |
111 | ||
d15d0333 | 112 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
113 | return true; |
114 | ||
d15d0333 | 115 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
116 | return true; |
117 | ||
118 | return false; | |
119 | } | |
120 | ||
e6a7b9f4 | 121 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
122 | assert(p); |
123 | ||
d15d0333 | 124 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
125 | } |
126 | ||
2b14df4a FB |
127 | static bool mount_is_automount(const MountParameters *p) { |
128 | assert(p); | |
129 | ||
130 | return fstab_test_option(p->options, | |
131 | "comment=systemd.automount\0" | |
132 | "x-systemd.automount\0"); | |
133 | } | |
134 | ||
ebc8968b FB |
135 | static bool mount_is_bound_to_device(const Mount *m) { |
136 | const MountParameters *p; | |
137 | ||
138 | if (m->from_fragment) | |
139 | return true; | |
140 | ||
141 | p = &m->parameters_proc_self_mountinfo; | |
142 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
143 | } | |
144 | ||
e6a7b9f4 | 145 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
146 | assert(p); |
147 | ||
11041c84 | 148 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 149 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 150 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
151 | return false; |
152 | ||
153 | if (mount_is_bind(p)) | |
154 | return false; | |
155 | ||
d15d0333 ZJS |
156 | return fstab_test_option(p->options, |
157 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
158 | } |
159 | ||
a16e1123 LP |
160 | static void mount_init(Unit *u) { |
161 | Mount *m = MOUNT(u); | |
5cb5a6ff | 162 | |
a16e1123 | 163 | assert(u); |
ac155bb8 | 164 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 165 | |
1f19a534 | 166 | m->timeout_usec = u->manager->default_timeout_start_usec; |
3e5235b0 LP |
167 | m->directory_mode = 0755; |
168 | ||
f00929ad DJL |
169 | /* We need to make sure that /usr/bin/mount is always called |
170 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
171 | * side doesn't send us another mount request while we are |
172 | * already trying to comply its last one. */ | |
74922904 | 173 | m->exec_context.same_pgrp = true; |
8d567588 | 174 | |
a16e1123 | 175 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 176 | |
5bcb0f2b | 177 | u->ignore_on_isolate = true; |
8d567588 LP |
178 | } |
179 | ||
36c16a7c | 180 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
181 | int r; |
182 | ||
183 | assert(m); | |
184 | ||
718db961 | 185 | if (m->timer_event_source) { |
36c16a7c | 186 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
187 | if (r < 0) |
188 | return r; | |
189 | ||
190 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
191 | } | |
192 | ||
36c16a7c LP |
193 | if (usec == USEC_INFINITY) |
194 | return 0; | |
195 | ||
7dfbe2e3 | 196 | r = sd_event_add_time( |
6a0f1f6d LP |
197 | UNIT(m)->manager->event, |
198 | &m->timer_event_source, | |
199 | CLOCK_MONOTONIC, | |
36c16a7c | 200 | usec, 0, |
6a0f1f6d | 201 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
202 | if (r < 0) |
203 | return r; | |
204 | ||
205 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
206 | ||
207 | return 0; | |
718db961 LP |
208 | } |
209 | ||
a16e1123 | 210 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
211 | assert(m); |
212 | ||
213 | if (m->control_pid <= 0) | |
214 | return; | |
215 | ||
216 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
217 | m->control_pid = 0; | |
218 | } | |
219 | ||
e537352b LP |
220 | static void mount_parameters_done(MountParameters *p) { |
221 | assert(p); | |
222 | ||
223 | free(p->what); | |
224 | free(p->options); | |
225 | free(p->fstype); | |
226 | ||
227 | p->what = p->options = p->fstype = NULL; | |
228 | } | |
229 | ||
87f0e418 | 230 | static void mount_done(Unit *u) { |
ef734fd6 | 231 | Mount *m = MOUNT(u); |
034c6ed7 | 232 | |
ef734fd6 | 233 | assert(m); |
034c6ed7 | 234 | |
a1e58e8e | 235 | m->where = mfree(m->where); |
f50e0a01 | 236 | |
e537352b LP |
237 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
238 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 239 | |
613b411c | 240 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); |
e537352b LP |
241 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
242 | m->control_command = NULL; | |
f50e0a01 | 243 | |
29206d46 LP |
244 | dynamic_creds_unref(&m->dynamic_creds); |
245 | ||
a16e1123 | 246 | mount_unwatch_control_pid(m); |
f50e0a01 | 247 | |
718db961 | 248 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
249 | } |
250 | ||
44a6b1b6 | 251 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
252 | assert(m); |
253 | ||
254 | if (m->from_fragment) | |
255 | return &m->parameters_fragment; | |
cb39ed3f LP |
256 | |
257 | return NULL; | |
258 | } | |
259 | ||
44a6b1b6 | 260 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
261 | assert(m); |
262 | ||
263 | if (m->from_proc_self_mountinfo) | |
264 | return &m->parameters_proc_self_mountinfo; | |
265 | ||
6b1dc2bd | 266 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
267 | } |
268 | ||
eef85c4a | 269 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 270 | MountParameters *pm; |
ac155bb8 | 271 | Unit *other; |
a57f7e2c LP |
272 | Iterator i; |
273 | Set *s; | |
b08d03ff LP |
274 | int r; |
275 | ||
6e2ef85b | 276 | assert(m); |
b08d03ff | 277 | |
a57f7e2c | 278 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
279 | _cleanup_free_ char *parent = NULL; |
280 | ||
281 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
282 | |
283 | parent = dirname_malloc(m->where); | |
284 | if (!parent) | |
285 | return -ENOMEM; | |
01f78473 | 286 | |
eef85c4a | 287 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 288 | if (r < 0) |
01f78473 | 289 | return r; |
4f0eedb7 | 290 | } |
01f78473 | 291 | |
eef85c4a LP |
292 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
293 | * or a loop mount) to be available. */ | |
a57f7e2c | 294 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
295 | if (pm && pm->what && |
296 | path_is_absolute(pm->what) && | |
d3bd0986 | 297 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 298 | |
eef85c4a | 299 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 300 | if (r < 0) |
6e2ef85b | 301 | return r; |
4f0eedb7 | 302 | } |
b08d03ff | 303 | |
eef85c4a | 304 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
305 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
306 | SET_FOREACH(other, s, i) { | |
b08d03ff | 307 | |
a57f7e2c LP |
308 | if (other->load_state != UNIT_LOADED) |
309 | continue; | |
b08d03ff | 310 | |
a57f7e2c LP |
311 | if (other == UNIT(m)) |
312 | continue; | |
b08d03ff | 313 | |
eef85c4a | 314 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 315 | if (r < 0) |
6e2ef85b | 316 | return r; |
b08d03ff | 317 | |
a57f7e2c LP |
318 | if (UNIT(m)->fragment_path) { |
319 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 320 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
321 | if (r < 0) |
322 | return r; | |
323 | } | |
7c8fa05c LP |
324 | } |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
eef85c4a | 329 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 330 | bool device_wants_mount = false; |
eef85c4a LP |
331 | UnitDependencyMask mask; |
332 | MountParameters *p; | |
ebc8968b | 333 | UnitDependency dep; |
9fff8a1f | 334 | int r; |
173a8d04 LP |
335 | |
336 | assert(m); | |
337 | ||
06e97888 | 338 | p = get_mount_parameters(m); |
6b1dc2bd | 339 | if (!p) |
173a8d04 LP |
340 | return 0; |
341 | ||
9fff8a1f | 342 | if (!p->what) |
173a8d04 | 343 | return 0; |
5c78d8e2 | 344 | |
dd144c63 LP |
345 | if (mount_is_bind(p)) |
346 | return 0; | |
347 | ||
348 | if (!is_device_path(p->what)) | |
349 | return 0; | |
350 | ||
7ba2711d LP |
351 | /* /dev/root is a really weird thing, it's not a real device, |
352 | * but just a path the kernel exports for the root file system | |
353 | * specified on the kernel command line. Ignore it here. */ | |
354 | if (path_equal(p->what, "/dev/root")) | |
355 | return 0; | |
356 | ||
dd144c63 LP |
357 | if (path_equal(m->where, "/")) |
358 | return 0; | |
359 | ||
463d0d15 | 360 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
361 | device_wants_mount = true; |
362 | ||
ebc8968b FB |
363 | /* Mount units from /proc/self/mountinfo are not bound to devices |
364 | * by default since they're subject to races when devices are | |
365 | * unplugged. But the user can still force this dep with an | |
366 | * appropriate option (or udev property) so the mount units are | |
367 | * automatically stopped when the device disappears suddenly. */ | |
368 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
369 | ||
eef85c4a LP |
370 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
371 | ||
372 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
373 | if (r < 0) |
374 | return r; | |
9fff8a1f | 375 | |
9fff8a1f | 376 | return 0; |
173a8d04 LP |
377 | } |
378 | ||
eef85c4a LP |
379 | static int mount_add_quota_dependencies(Mount *m) { |
380 | UnitDependencyMask mask; | |
6b1dc2bd | 381 | MountParameters *p; |
eef85c4a | 382 | int r; |
6b1dc2bd LP |
383 | |
384 | assert(m); | |
385 | ||
463d0d15 | 386 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
387 | return 0; |
388 | ||
389 | p = get_mount_parameters_fragment(m); | |
390 | if (!p) | |
391 | return 0; | |
392 | ||
393 | if (!needs_quota(p)) | |
394 | return 0; | |
395 | ||
eef85c4a LP |
396 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
397 | ||
398 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true, mask); | |
6b1dc2bd LP |
399 | if (r < 0) |
400 | return r; | |
401 | ||
eef85c4a | 402 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true, mask); |
6b1dc2bd LP |
403 | if (r < 0) |
404 | return r; | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
ad2706db | 409 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 410 | MountParameters *p; |
ad2706db | 411 | assert(m); |
88ac30a1 | 412 | |
ad2706db LP |
413 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
414 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
415 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
416 | ||
417 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
418 | return true; | |
419 | ||
420 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
421 | "/", | |
422 | "/usr")) | |
423 | return true; | |
88ac30a1 | 424 | |
ad2706db LP |
425 | if (PATH_STARTSWITH_SET(m->where, |
426 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
427 | "/proc", /* All of this is API VFS */ | |
428 | "/sys", /* … dito … */ | |
429 | "/dev")) /* … dito … */ | |
430 | return true; | |
431 | ||
432 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 433 | p = get_mount_parameters(m); |
ad2706db LP |
434 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
435 | return true; | |
88ac30a1 | 436 | |
ad2706db | 437 | return false; |
88ac30a1 TG |
438 | } |
439 | ||
2edd4434 | 440 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
441 | UnitDependencyMask mask; |
442 | int r; | |
9ddc4a26 | 443 | MountParameters *p; |
ea0ec5ce | 444 | const char *after; |
2edd4434 LP |
445 | |
446 | assert(m); | |
447 | ||
4c9ea260 LP |
448 | if (!UNIT(m)->default_dependencies) |
449 | return 0; | |
450 | ||
ad2706db LP |
451 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
452 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
453 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
454 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 455 | return 0; |
2edd4434 | 456 | |
874d3404 LP |
457 | p = get_mount_parameters(m); |
458 | if (!p) | |
6b1dc2bd LP |
459 | return 0; |
460 | ||
eef85c4a LP |
461 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
462 | ||
e8d2f6cd | 463 | if (mount_is_network(p)) { |
ea0ec5ce LP |
464 | /* We order ourselves after network.target. This is |
465 | * primarily useful at shutdown: services that take | |
466 | * down the network should order themselves before | |
467 | * network.target, so that they are shut down only | |
468 | * after this mount unit is stopped. */ | |
6b1dc2bd | 469 | |
eef85c4a | 470 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, NULL, true, mask); |
a63a5c46 LP |
471 | if (r < 0) |
472 | return r; | |
a63a5c46 | 473 | |
ea0ec5ce LP |
474 | /* We pull in network-online.target, and order |
475 | * ourselves after it. This is useful at start-up to | |
476 | * actively pull in tools that want to be started | |
477 | * before we start mounting network file systems, and | |
478 | * whose purpose it is to delay this until the network | |
479 | * is "up". */ | |
480 | ||
eef85c4a | 481 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, NULL, true, mask); |
e8d2f6cd LP |
482 | if (r < 0) |
483 | return r; | |
ea0ec5ce LP |
484 | |
485 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
486 | } else | |
487 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
488 | ||
eef85c4a | 489 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true, mask); |
ea0ec5ce LP |
490 | if (r < 0) |
491 | return r; | |
e8d2f6cd | 492 | |
eef85c4a | 493 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, mask); |
ad2706db LP |
494 | if (r < 0) |
495 | return r; | |
2edd4434 | 496 | |
3e3852b3 | 497 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 498 | if (streq_ptr(p->fstype, "tmpfs")) { |
3e3852b3 LP |
499 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, NULL, true, mask); |
500 | if (r < 0) | |
501 | return r; | |
502 | } | |
503 | ||
2edd4434 LP |
504 | return 0; |
505 | } | |
506 | ||
8d567588 | 507 | static int mount_verify(Mount *m) { |
a57f7e2c | 508 | _cleanup_free_ char *e = NULL; |
b294b79f | 509 | MountParameters *p; |
7410616c | 510 | int r; |
a57f7e2c | 511 | |
8d567588 LP |
512 | assert(m); |
513 | ||
1124fe6f | 514 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
515 | return 0; |
516 | ||
1df96fcb | 517 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
518 | return -ENOENT; |
519 | ||
7410616c LP |
520 | r = unit_name_from_path(m->where, ".mount", &e); |
521 | if (r < 0) | |
f2341e0a | 522 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 523 | |
7410616c | 524 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 525 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
526 | return -EINVAL; |
527 | } | |
528 | ||
33ff02c9 | 529 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 530 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
33ff02c9 LP |
531 | return -EINVAL; |
532 | } | |
533 | ||
b294b79f MO |
534 | p = get_mount_parameters_fragment(m); |
535 | if (p && !p->what) { | |
f2341e0a | 536 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
4e85aff4 LP |
537 | return -EBADMSG; |
538 | } | |
539 | ||
4819ff03 | 540 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 541 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
4d0e5dbd LP |
542 | return -EINVAL; |
543 | } | |
544 | ||
8d567588 LP |
545 | return 0; |
546 | } | |
547 | ||
1a4ac875 MS |
548 | static int mount_add_extras(Mount *m) { |
549 | Unit *u = UNIT(m); | |
e537352b LP |
550 | int r; |
551 | ||
e821075a LP |
552 | assert(m); |
553 | ||
554 | if (u->fragment_path) | |
1a4ac875 | 555 | m->from_fragment = true; |
e537352b | 556 | |
1a4ac875 | 557 | if (!m->where) { |
7410616c LP |
558 | r = unit_name_to_path(u->id, &m->where); |
559 | if (r < 0) | |
560 | return r; | |
1a4ac875 | 561 | } |
a16e1123 | 562 | |
1a4ac875 | 563 | path_kill_slashes(m->where); |
e537352b | 564 | |
e821075a | 565 | if (!u->description) { |
1a4ac875 MS |
566 | r = unit_set_description(u, m->where); |
567 | if (r < 0) | |
173a8d04 | 568 | return r; |
1a4ac875 | 569 | } |
6e2ef85b | 570 | |
eef85c4a | 571 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
572 | if (r < 0) |
573 | return r; | |
6e2ef85b | 574 | |
eef85c4a | 575 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
576 | if (r < 0) |
577 | return r; | |
6e2ef85b | 578 | |
eef85c4a | 579 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
580 | if (r < 0) |
581 | return r; | |
e537352b | 582 | |
598459ce LP |
583 | r = unit_patch_contexts(u); |
584 | if (r < 0) | |
585 | return r; | |
4e67ddd6 | 586 | |
598459ce | 587 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
588 | if (r < 0) |
589 | return r; | |
590 | ||
d79200e2 | 591 | r = unit_set_default_slice(u); |
1a4ac875 MS |
592 | if (r < 0) |
593 | return r; | |
594 | ||
4c9ea260 LP |
595 | r = mount_add_default_dependencies(m); |
596 | if (r < 0) | |
597 | return r; | |
598459ce | 598 | |
1a4ac875 MS |
599 | return 0; |
600 | } | |
601 | ||
11222d0f LP |
602 | static int mount_load_root_mount(Unit *u) { |
603 | assert(u); | |
604 | ||
605 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
606 | return 0; | |
607 | ||
608 | u->perpetual = true; | |
609 | u->default_dependencies = false; | |
610 | ||
611 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
612 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
613 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
614 | ||
615 | if (!u->description) | |
616 | u->description = strdup("Root Mount"); | |
617 | ||
618 | return 1; | |
619 | } | |
620 | ||
1a4ac875 MS |
621 | static int mount_load(Unit *u) { |
622 | Mount *m = MOUNT(u); | |
623 | int r; | |
624 | ||
625 | assert(u); | |
626 | assert(u->load_state == UNIT_STUB); | |
627 | ||
11222d0f LP |
628 | r = mount_load_root_mount(u); |
629 | if (r < 0) | |
630 | return r; | |
631 | ||
632 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
633 | r = unit_load_fragment_and_dropin_optional(u); |
634 | else | |
635 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
636 | if (r < 0) |
637 | return r; | |
155da457 | 638 | |
1a4ac875 MS |
639 | /* This is a new unit? Then let's add in some extras */ |
640 | if (u->load_state == UNIT_LOADED) { | |
641 | r = mount_add_extras(m); | |
642 | if (r < 0) | |
643 | return r; | |
e537352b LP |
644 | } |
645 | ||
8d567588 | 646 | return mount_verify(m); |
e537352b LP |
647 | } |
648 | ||
649 | static void mount_set_state(Mount *m, MountState state) { | |
650 | MountState old_state; | |
651 | assert(m); | |
652 | ||
653 | old_state = m->state; | |
654 | m->state = state; | |
655 | ||
c634f3d2 | 656 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 657 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 658 | mount_unwatch_control_pid(m); |
e537352b | 659 | m->control_command = NULL; |
a16e1123 | 660 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
661 | } |
662 | ||
663 | if (state != old_state) | |
f2341e0a | 664 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 665 | |
9d2f5178 | 666 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
667 | } |
668 | ||
be847e82 | 669 | static int mount_coldplug(Unit *u) { |
e537352b | 670 | Mount *m = MOUNT(u); |
a16e1123 LP |
671 | MountState new_state = MOUNT_DEAD; |
672 | int r; | |
e537352b LP |
673 | |
674 | assert(m); | |
675 | assert(m->state == MOUNT_DEAD); | |
676 | ||
a16e1123 LP |
677 | if (m->deserialized_state != m->state) |
678 | new_state = m->deserialized_state; | |
679 | else if (m->from_proc_self_mountinfo) | |
680 | new_state = MOUNT_MOUNTED; | |
e537352b | 681 | |
5bcb0f2b LP |
682 | if (new_state == m->state) |
683 | return 0; | |
e537352b | 684 | |
c386f588 LP |
685 | if (m->control_pid > 0 && |
686 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 687 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
688 | |
689 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
690 | if (r < 0) | |
691 | return r; | |
e537352b | 692 | |
36c16a7c | 693 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
694 | if (r < 0) |
695 | return r; | |
a16e1123 | 696 | } |
e537352b | 697 | |
29206d46 LP |
698 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) |
699 | (void) unit_setup_dynamic_creds(u); | |
700 | ||
5bcb0f2b | 701 | mount_set_state(m, new_state); |
e537352b | 702 | return 0; |
e537352b LP |
703 | } |
704 | ||
705 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
706 | Mount *m = MOUNT(u); | |
707 | MountParameters *p; | |
708 | ||
709 | assert(m); | |
710 | assert(f); | |
711 | ||
cb39ed3f | 712 | p = get_mount_parameters(m); |
e537352b LP |
713 | |
714 | fprintf(f, | |
715 | "%sMount State: %s\n" | |
81a5c6d0 | 716 | "%sResult: %s\n" |
e537352b LP |
717 | "%sWhere: %s\n" |
718 | "%sWhat: %s\n" | |
719 | "%sFile System Type: %s\n" | |
720 | "%sOptions: %s\n" | |
e537352b LP |
721 | "%sFrom /proc/self/mountinfo: %s\n" |
722 | "%sFrom fragment: %s\n" | |
ad2706db | 723 | "%sExtrinsic: %s\n" |
e520950a | 724 | "%sDirectoryMode: %04o\n" |
49915de2 | 725 | "%sSloppyOptions: %s\n" |
4f8d40a9 BR |
726 | "%sLazyUnmount: %s\n" |
727 | "%sForceUnmount: %s\n", | |
a16e1123 | 728 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 729 | prefix, mount_result_to_string(m->result), |
e537352b | 730 | prefix, m->where, |
1e4fc9b1 HH |
731 | prefix, p ? strna(p->what) : "n/a", |
732 | prefix, p ? strna(p->fstype) : "n/a", | |
733 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
734 | prefix, yes_no(m->from_proc_self_mountinfo), |
735 | prefix, yes_no(m->from_fragment), | |
ad2706db | 736 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 737 | prefix, m->directory_mode, |
49915de2 | 738 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 BR |
739 | prefix, yes_no(m->lazy_unmount), |
740 | prefix, yes_no(m->force_unmount)); | |
e537352b LP |
741 | |
742 | if (m->control_pid > 0) | |
743 | fprintf(f, | |
ccd06097 ZJS |
744 | "%sControl PID: "PID_FMT"\n", |
745 | prefix, m->control_pid); | |
e537352b LP |
746 | |
747 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 748 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 749 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
750 | } |
751 | ||
a16e1123 | 752 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 753 | |
9fa95f85 | 754 | ExecParameters exec_params = { |
1703fa41 | 755 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
756 | .stdin_fd = -1, |
757 | .stdout_fd = -1, | |
758 | .stderr_fd = -1, | |
9fa95f85 | 759 | }; |
3c7416b6 LP |
760 | pid_t pid; |
761 | int r; | |
a16e1123 LP |
762 | |
763 | assert(m); | |
764 | assert(c); | |
765 | assert(_pid); | |
766 | ||
3c7416b6 | 767 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
768 | if (r < 0) |
769 | return r; | |
770 | ||
36c16a7c | 771 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 772 | if (r < 0) |
36c16a7c | 773 | return r; |
a16e1123 | 774 | |
19bbdd98 | 775 | manager_set_exec_params(UNIT(m)->manager, &exec_params); |
f0d47797 | 776 | unit_set_exec_params(UNIT(m), &exec_params); |
9fa95f85 | 777 | |
f2341e0a LP |
778 | r = exec_spawn(UNIT(m), |
779 | c, | |
4ad49000 | 780 | &m->exec_context, |
9fa95f85 | 781 | &exec_params, |
613b411c | 782 | m->exec_runtime, |
29206d46 | 783 | &m->dynamic_creds, |
4ad49000 LP |
784 | &pid); |
785 | if (r < 0) | |
36c16a7c | 786 | return r; |
a16e1123 | 787 | |
4ad49000 LP |
788 | r = unit_watch_pid(UNIT(m), pid); |
789 | if (r < 0) | |
a16e1123 | 790 | /* FIXME: we need to do something here */ |
36c16a7c | 791 | return r; |
a16e1123 LP |
792 | |
793 | *_pid = pid; | |
794 | ||
795 | return 0; | |
a16e1123 LP |
796 | } |
797 | ||
9d2f5178 | 798 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
799 | assert(m); |
800 | ||
a0fef983 | 801 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 802 | m->result = f; |
e537352b | 803 | |
ed77d407 LP |
804 | if (m->result != MOUNT_SUCCESS) |
805 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
806 | ||
29206d46 LP |
807 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
808 | ||
613b411c LP |
809 | exec_runtime_destroy(m->exec_runtime); |
810 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); | |
811 | ||
3536f49e | 812 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 813 | |
00d9ef85 LP |
814 | unit_unref_uid_gid(UNIT(m), true); |
815 | ||
29206d46 | 816 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
817 | } |
818 | ||
9d2f5178 | 819 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
820 | assert(m); |
821 | ||
a0fef983 | 822 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 823 | m->result = f; |
80876c20 LP |
824 | |
825 | mount_set_state(m, MOUNT_MOUNTED); | |
826 | } | |
827 | ||
22af0e58 LP |
828 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
829 | assert(m); | |
830 | ||
831 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
832 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
833 | * ultimately we just mirror the kernel's internal state on this. */ | |
834 | ||
835 | if (m->from_proc_self_mountinfo) | |
836 | mount_enter_mounted(m, f); | |
837 | else | |
838 | mount_enter_dead(m, f); | |
839 | } | |
840 | ||
841 | static int state_to_kill_operation(MountState state) { | |
842 | switch (state) { | |
843 | ||
844 | case MOUNT_REMOUNTING_SIGTERM: | |
845 | case MOUNT_UNMOUNTING_SIGTERM: | |
846 | return KILL_TERMINATE; | |
847 | ||
848 | case MOUNT_REMOUNTING_SIGKILL: | |
849 | case MOUNT_UNMOUNTING_SIGKILL: | |
850 | return KILL_KILL; | |
851 | ||
852 | default: | |
853 | return _KILL_OPERATION_INVALID; | |
854 | } | |
855 | } | |
856 | ||
9d2f5178 | 857 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
858 | int r; |
859 | ||
860 | assert(m); | |
861 | ||
a0fef983 | 862 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 863 | m->result = f; |
e537352b | 864 | |
cd2086fe LP |
865 | r = unit_kill_context( |
866 | UNIT(m), | |
867 | &m->kill_context, | |
22af0e58 | 868 | state_to_kill_operation(state), |
cd2086fe LP |
869 | -1, |
870 | m->control_pid, | |
871 | false); | |
872 | if (r < 0) | |
873 | goto fail; | |
e537352b | 874 | |
cd2086fe | 875 | if (r > 0) { |
36c16a7c | 876 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 877 | if (r < 0) |
80876c20 | 878 | goto fail; |
e537352b | 879 | |
80876c20 | 880 | mount_set_state(m, state); |
22af0e58 | 881 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 882 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 883 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 884 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 885 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 886 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 887 | else |
22af0e58 | 888 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
889 | |
890 | return; | |
891 | ||
892 | fail: | |
f2341e0a | 893 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 894 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
895 | } |
896 | ||
9d2f5178 | 897 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
898 | int r; |
899 | ||
900 | assert(m); | |
901 | ||
7d54a03a LP |
902 | /* Start counting our attempts */ |
903 | if (!IN_SET(m->state, | |
904 | MOUNT_UNMOUNTING, | |
905 | MOUNT_UNMOUNTING_SIGTERM, | |
906 | MOUNT_UNMOUNTING_SIGKILL)) | |
907 | m->n_retry_umount = 0; | |
908 | ||
a16e1123 LP |
909 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
910 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 911 | |
83897d54 | 912 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
913 | if (r >= 0 && m->lazy_unmount) |
914 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
915 | if (r >= 0 && m->force_unmount) |
916 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 917 | if (r < 0) |
e537352b LP |
918 | goto fail; |
919 | ||
a16e1123 | 920 | mount_unwatch_control_pid(m); |
5e94833f | 921 | |
7d54a03a LP |
922 | r = mount_spawn(m, m->control_command, &m->control_pid); |
923 | if (r < 0) | |
e537352b LP |
924 | goto fail; |
925 | ||
926 | mount_set_state(m, MOUNT_UNMOUNTING); | |
927 | ||
928 | return; | |
929 | ||
930 | fail: | |
f2341e0a | 931 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 932 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
933 | } |
934 | ||
8d567588 | 935 | static void mount_enter_mounting(Mount *m) { |
e537352b | 936 | int r; |
cb39ed3f | 937 | MountParameters *p; |
e537352b LP |
938 | |
939 | assert(m); | |
940 | ||
f2341e0a LP |
941 | r = unit_fail_if_symlink(UNIT(m), m->where); |
942 | if (r < 0) | |
943 | goto fail; | |
944 | ||
945 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 946 | |
f2341e0a | 947 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 948 | |
a4634b21 LP |
949 | unit_warn_leftover_processes(UNIT(m)); |
950 | ||
951 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
952 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
953 | ||
cb39ed3f | 954 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 955 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 956 | if (p && mount_is_bind(p)) |
f2341e0a | 957 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 958 | |
b294b79f | 959 | if (p) { |
17a1c597 ZJS |
960 | _cleanup_free_ char *opts = NULL; |
961 | ||
b294b79f | 962 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
963 | if (r < 0) |
964 | goto fail; | |
965 | ||
b294b79f | 966 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
967 | if (r >= 0 && m->sloppy_options) |
968 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
969 | if (r >= 0 && p->fstype) |
970 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 971 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 972 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 973 | } else |
e537352b | 974 | r = -ENOENT; |
e537352b LP |
975 | if (r < 0) |
976 | goto fail; | |
977 | ||
a16e1123 | 978 | mount_unwatch_control_pid(m); |
5e94833f | 979 | |
257f1d8e LP |
980 | r = mount_spawn(m, m->control_command, &m->control_pid); |
981 | if (r < 0) | |
e537352b LP |
982 | goto fail; |
983 | ||
984 | mount_set_state(m, MOUNT_MOUNTING); | |
985 | ||
986 | return; | |
987 | ||
988 | fail: | |
f2341e0a | 989 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 990 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
991 | } |
992 | ||
850b7410 LP |
993 | static void mount_set_reload_result(Mount *m, MountResult result) { |
994 | assert(m); | |
995 | ||
996 | /* Only store the first error we encounter */ | |
997 | if (m->reload_result != MOUNT_SUCCESS) | |
998 | return; | |
999 | ||
1000 | m->reload_result = result; | |
1001 | } | |
1002 | ||
9d2f5178 | 1003 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1004 | int r; |
b294b79f | 1005 | MountParameters *p; |
e537352b LP |
1006 | |
1007 | assert(m); | |
1008 | ||
850b7410 LP |
1009 | /* Reset reload result when we are about to start a new remount operation */ |
1010 | m->reload_result = MOUNT_SUCCESS; | |
1011 | ||
a16e1123 LP |
1012 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1013 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1014 | |
b294b79f MO |
1015 | p = get_mount_parameters_fragment(m); |
1016 | if (p) { | |
e537352b LP |
1017 | const char *o; |
1018 | ||
b294b79f MO |
1019 | if (p->options) |
1020 | o = strjoina("remount,", p->options); | |
718db961 | 1021 | else |
e537352b LP |
1022 | o = "remount"; |
1023 | ||
f00929ad | 1024 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1025 | p->what, m->where, |
e86b3761 | 1026 | "-o", o, NULL); |
e86b3761 ZJS |
1027 | if (r >= 0 && m->sloppy_options) |
1028 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1029 | if (r >= 0 && p->fstype) |
1030 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1031 | } else |
e537352b | 1032 | r = -ENOENT; |
60b912f6 | 1033 | if (r < 0) |
e537352b | 1034 | goto fail; |
e537352b | 1035 | |
a16e1123 | 1036 | mount_unwatch_control_pid(m); |
5e94833f | 1037 | |
718db961 LP |
1038 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1039 | if (r < 0) | |
e537352b LP |
1040 | goto fail; |
1041 | ||
1042 | mount_set_state(m, MOUNT_REMOUNTING); | |
1043 | ||
1044 | return; | |
1045 | ||
1046 | fail: | |
f2341e0a | 1047 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1048 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1049 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1050 | } |
1051 | ||
1052 | static int mount_start(Unit *u) { | |
1053 | Mount *m = MOUNT(u); | |
07299350 | 1054 | int r; |
e537352b LP |
1055 | |
1056 | assert(m); | |
1057 | ||
1058 | /* We cannot fulfill this request right now, try again later | |
1059 | * please! */ | |
f2aed307 LP |
1060 | if (IN_SET(m->state, |
1061 | MOUNT_UNMOUNTING, | |
1062 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1063 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1064 | return -EAGAIN; |
1065 | ||
1066 | /* Already on it! */ | |
60b912f6 | 1067 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1068 | return 0; |
1069 | ||
f2aed307 | 1070 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1071 | |
07299350 LP |
1072 | r = unit_start_limit_test(u); |
1073 | if (r < 0) { | |
1074 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1075 | return r; | |
1076 | } | |
1077 | ||
4b58153d LP |
1078 | r = unit_acquire_invocation_id(u); |
1079 | if (r < 0) | |
1080 | return r; | |
1081 | ||
9d2f5178 LP |
1082 | m->result = MOUNT_SUCCESS; |
1083 | m->reload_result = MOUNT_SUCCESS; | |
3c7416b6 LP |
1084 | |
1085 | u->reset_accounting = true; | |
9d2f5178 | 1086 | |
8d567588 | 1087 | mount_enter_mounting(m); |
82a2b6bb | 1088 | return 1; |
e537352b LP |
1089 | } |
1090 | ||
1091 | static int mount_stop(Unit *u) { | |
1092 | Mount *m = MOUNT(u); | |
1093 | ||
1094 | assert(m); | |
1095 | ||
22af0e58 LP |
1096 | switch (m->state) { |
1097 | ||
1098 | case MOUNT_UNMOUNTING: | |
1099 | case MOUNT_UNMOUNTING_SIGKILL: | |
1100 | case MOUNT_UNMOUNTING_SIGTERM: | |
1101 | /* Already on it */ | |
e537352b LP |
1102 | return 0; |
1103 | ||
22af0e58 LP |
1104 | case MOUNT_MOUNTING: |
1105 | case MOUNT_MOUNTING_DONE: | |
1106 | case MOUNT_REMOUNTING: | |
1107 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1108 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1109 | return 0; | |
e537352b | 1110 | |
22af0e58 LP |
1111 | case MOUNT_REMOUNTING_SIGTERM: |
1112 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1113 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1114 | return 0; | |
1115 | ||
1116 | case MOUNT_REMOUNTING_SIGKILL: | |
1117 | /* as above */ | |
1118 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1119 | return 0; | |
1120 | ||
1121 | case MOUNT_MOUNTED: | |
1122 | mount_enter_unmounting(m); | |
1123 | return 1; | |
1124 | ||
1125 | default: | |
1126 | assert_not_reached("Unexpected state."); | |
1127 | } | |
e537352b LP |
1128 | } |
1129 | ||
1130 | static int mount_reload(Unit *u) { | |
1131 | Mount *m = MOUNT(u); | |
1132 | ||
1133 | assert(m); | |
1134 | ||
22af0e58 | 1135 | if (m->state == MOUNT_MOUNTING_DONE) /* not yet ready to reload, try again */ |
e537352b LP |
1136 | return -EAGAIN; |
1137 | ||
1138 | assert(m->state == MOUNT_MOUNTED); | |
1139 | ||
9d2f5178 | 1140 | mount_enter_remounting(m); |
22af0e58 | 1141 | |
2d018ae2 | 1142 | return 1; |
e537352b LP |
1143 | } |
1144 | ||
a16e1123 LP |
1145 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1146 | Mount *m = MOUNT(u); | |
1147 | ||
1148 | assert(m); | |
1149 | assert(f); | |
1150 | assert(fds); | |
1151 | ||
1152 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1153 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1154 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1155 | |
1156 | if (m->control_pid > 0) | |
ccd06097 | 1157 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1158 | |
1159 | if (m->control_command_id >= 0) | |
1160 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1166 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1167 | |
1168 | assert(u); | |
1169 | assert(key); | |
1170 | assert(value); | |
1171 | assert(fds); | |
1172 | ||
1173 | if (streq(key, "state")) { | |
1174 | MountState state; | |
1175 | ||
1176 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1177 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1178 | else |
1179 | m->deserialized_state = state; | |
9d2f5178 LP |
1180 | } else if (streq(key, "result")) { |
1181 | MountResult f; | |
a16e1123 | 1182 | |
9d2f5178 LP |
1183 | f = mount_result_from_string(value); |
1184 | if (f < 0) | |
f2341e0a | 1185 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1186 | else if (f != MOUNT_SUCCESS) |
1187 | m->result = f; | |
1188 | ||
1189 | } else if (streq(key, "reload-result")) { | |
1190 | MountResult f; | |
1191 | ||
1192 | f = mount_result_from_string(value); | |
1193 | if (f < 0) | |
f2341e0a | 1194 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1195 | else if (f != MOUNT_SUCCESS) |
1196 | m->reload_result = f; | |
a16e1123 LP |
1197 | |
1198 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1199 | pid_t pid; |
a16e1123 | 1200 | |
e364ad06 | 1201 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1202 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1203 | else |
5925dd3c | 1204 | m->control_pid = pid; |
a16e1123 LP |
1205 | } else if (streq(key, "control-command")) { |
1206 | MountExecCommand id; | |
1207 | ||
f2341e0a LP |
1208 | id = mount_exec_command_from_string(value); |
1209 | if (id < 0) | |
1210 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1211 | else { |
1212 | m->control_command_id = id; | |
1213 | m->control_command = m->exec_command + id; | |
1214 | } | |
a16e1123 | 1215 | } else |
f2341e0a | 1216 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1217 | |
1218 | return 0; | |
1219 | } | |
1220 | ||
44a6b1b6 | 1221 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1222 | assert(u); |
1223 | ||
1224 | return state_translation_table[MOUNT(u)->state]; | |
1225 | } | |
1226 | ||
44a6b1b6 | 1227 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1228 | assert(u); |
1229 | ||
a16e1123 | 1230 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1231 | } |
1232 | ||
44a6b1b6 | 1233 | _pure_ static bool mount_check_gc(Unit *u) { |
701cc384 LP |
1234 | Mount *m = MOUNT(u); |
1235 | ||
1236 | assert(m); | |
1237 | ||
6b1dc2bd | 1238 | return m->from_proc_self_mountinfo; |
701cc384 LP |
1239 | } |
1240 | ||
e537352b LP |
1241 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1242 | Mount *m = MOUNT(u); | |
9d2f5178 | 1243 | MountResult f; |
e537352b LP |
1244 | |
1245 | assert(m); | |
1246 | assert(pid >= 0); | |
1247 | ||
8c47c732 LP |
1248 | if (pid != m->control_pid) |
1249 | return; | |
e537352b | 1250 | |
e537352b LP |
1251 | m->control_pid = 0; |
1252 | ||
1f0958f6 | 1253 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1254 | f = MOUNT_SUCCESS; |
1255 | else if (code == CLD_EXITED) | |
1256 | f = MOUNT_FAILURE_EXIT_CODE; | |
1257 | else if (code == CLD_KILLED) | |
1258 | f = MOUNT_FAILURE_SIGNAL; | |
1259 | else if (code == CLD_DUMPED) | |
1260 | f = MOUNT_FAILURE_CORE_DUMP; | |
1261 | else | |
1262 | assert_not_reached("Unknown code"); | |
1263 | ||
850b7410 LP |
1264 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1265 | mount_set_reload_result(m, f); | |
1266 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1267 | m->result = f; |
8c47c732 | 1268 | |
a16e1123 | 1269 | if (m->control_command) { |
6ea832a2 | 1270 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1271 | |
a16e1123 LP |
1272 | m->control_command = NULL; |
1273 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1274 | } | |
1275 | ||
f2341e0a LP |
1276 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1277 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1278 | |
22af0e58 LP |
1279 | /* Note that mount(8) returning and the kernel sending us a mount table change event might happen |
1280 | * out-of-order. If an operation succeed we assume the kernel will follow soon too and already change into the | |
1281 | * resulting state. If it fails we check if the kernel still knows about the mount. and change state | |
1282 | * accordingly. */ | |
e537352b LP |
1283 | |
1284 | switch (m->state) { | |
1285 | ||
1286 | case MOUNT_MOUNTING: | |
1287 | case MOUNT_MOUNTING_DONE: | |
e537352b | 1288 | |
052364d4 LP |
1289 | if (f == MOUNT_SUCCESS || m->from_proc_self_mountinfo) |
1290 | /* If /bin/mount returned success, or if we see the mount point in /proc/self/mountinfo we are | |
ce954c03 | 1291 | * happy. If we see the first condition first, we should see the second condition |
052364d4 | 1292 | * immediately after – or /bin/mount lies to us and is broken. */ |
9d2f5178 | 1293 | mount_enter_mounted(m, f); |
e537352b | 1294 | else |
9d2f5178 | 1295 | mount_enter_dead(m, f); |
e537352b LP |
1296 | break; |
1297 | ||
e2f3b44c | 1298 | case MOUNT_REMOUNTING: |
e2f3b44c | 1299 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1300 | case MOUNT_REMOUNTING_SIGKILL: |
1301 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1302 | break; |
1303 | ||
e537352b LP |
1304 | case MOUNT_UNMOUNTING: |
1305 | case MOUNT_UNMOUNTING_SIGKILL: | |
1306 | case MOUNT_UNMOUNTING_SIGTERM: | |
1307 | ||
22af0e58 LP |
1308 | if (m->from_proc_self_mountinfo) { |
1309 | ||
1310 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
1311 | * stacked on top of each other. Note that due to the io event priority logic we can be sure | |
1312 | * the new mountinfo is loaded before we process the SIGCHLD for the mount command. */ | |
1313 | ||
1314 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1315 | log_unit_debug(u, "Mount still present, trying again."); | |
1316 | m->n_retry_umount++; | |
1317 | mount_enter_unmounting(m); | |
1318 | } else { | |
1319 | log_unit_debug(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); | |
1320 | mount_enter_mounted(m, f); | |
1321 | } | |
1322 | } else | |
9d2f5178 | 1323 | mount_enter_dead(m, f); |
22af0e58 | 1324 | |
e537352b LP |
1325 | break; |
1326 | ||
1327 | default: | |
1328 | assert_not_reached("Uh, control process died at wrong time."); | |
1329 | } | |
c4e2ceae LP |
1330 | |
1331 | /* Notify clients about changed exit status */ | |
1332 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1333 | } |
1334 | ||
718db961 LP |
1335 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1336 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1337 | |
1338 | assert(m); | |
718db961 | 1339 | assert(m->timer_event_source == source); |
e537352b LP |
1340 | |
1341 | switch (m->state) { | |
1342 | ||
1343 | case MOUNT_MOUNTING: | |
1344 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1345 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1346 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1347 | break; |
1348 | ||
1349 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1350 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1351 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1352 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1353 | break; |
1354 | ||
22af0e58 LP |
1355 | case MOUNT_REMOUNTING_SIGTERM: |
1356 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1357 | |
4819ff03 | 1358 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1359 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1360 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1361 | } else { |
22af0e58 LP |
1362 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1363 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1364 | } |
e537352b LP |
1365 | break; |
1366 | ||
22af0e58 LP |
1367 | case MOUNT_REMOUNTING_SIGKILL: |
1368 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1369 | |
22af0e58 LP |
1370 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1371 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1372 | break; | |
1373 | ||
1374 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1375 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1376 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1377 | break; |
1378 | ||
1379 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1380 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1381 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1382 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1383 | } else { |
22af0e58 LP |
1384 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1385 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1386 | } |
e537352b LP |
1387 | break; |
1388 | ||
e537352b | 1389 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1390 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1391 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1392 | break; |
1393 | ||
1394 | default: | |
1395 | assert_not_reached("Timeout at wrong time."); | |
1396 | } | |
718db961 LP |
1397 | |
1398 | return 0; | |
e537352b LP |
1399 | } |
1400 | ||
03b8cfed FB |
1401 | typedef struct { |
1402 | bool is_mounted; | |
1403 | bool just_mounted; | |
1404 | bool just_changed; | |
1405 | } MountSetupFlags; | |
1406 | ||
1407 | static int mount_setup_new_unit( | |
1408 | Unit *u, | |
1409 | const char *what, | |
1410 | const char *where, | |
1411 | const char *options, | |
1412 | const char *fstype, | |
1413 | MountSetupFlags *flags) { | |
1414 | ||
1415 | MountParameters *p; | |
1416 | ||
1417 | assert(u); | |
1418 | assert(flags); | |
1419 | ||
1420 | u->source_path = strdup("/proc/self/mountinfo"); | |
1421 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1422 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1423 | return -ENOMEM; |
1424 | ||
1425 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1426 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1427 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1428 | ||
1429 | p->what = strdup(what); | |
1430 | p->options = strdup(options); | |
1431 | p->fstype = strdup(fstype); | |
1432 | if (!p->what || !p->options || !p->fstype) | |
1433 | return -ENOMEM; | |
1434 | ||
1435 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1436 | const char *target; | |
1437 | int r; | |
1438 | ||
1439 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
eef85c4a | 1440 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1441 | if (r < 0) |
1442 | return r; | |
1443 | ||
eef85c4a | 1444 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1445 | if (r < 0) |
1446 | return r; | |
1447 | } | |
1448 | ||
cfcd4318 | 1449 | unit_add_to_load_queue(u); |
03b8cfed FB |
1450 | flags->is_mounted = true; |
1451 | flags->just_mounted = true; | |
1452 | flags->just_changed = true; | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static int mount_setup_existing_unit( | |
1458 | Unit *u, | |
1459 | const char *what, | |
1460 | const char *where, | |
1461 | const char *options, | |
1462 | const char *fstype, | |
1463 | MountSetupFlags *flags) { | |
1464 | ||
1465 | MountParameters *p; | |
1466 | bool load_extras = false; | |
1467 | int r1, r2, r3; | |
1468 | ||
1469 | assert(u); | |
1470 | assert(flags); | |
1471 | ||
1472 | if (!MOUNT(u)->where) { | |
1473 | MOUNT(u)->where = strdup(where); | |
1474 | if (!MOUNT(u)->where) | |
1475 | return -ENOMEM; | |
1476 | } | |
1477 | ||
1478 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1479 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1480 | ||
1481 | r1 = free_and_strdup(&p->what, what); | |
1482 | r2 = free_and_strdup(&p->options, options); | |
1483 | r3 = free_and_strdup(&p->fstype, fstype); | |
1484 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1485 | return -ENOMEM; | |
1486 | ||
1487 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1488 | flags->is_mounted = true; | |
65d36b49 | 1489 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1490 | |
1491 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1492 | ||
1493 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1494 | /* _netdev option may have shown up late, or on a | |
1495 | * remount. Add remote-fs dependencies, even though | |
1496 | * local-fs ones may already be there. | |
1497 | * | |
1498 | * Note: due to a current limitation (we don't track | |
1499 | * in the dependency "Set*" objects who created a | |
1500 | * dependency), we can only add deps, never lose them, | |
1501 | * until the next full daemon-reload. */ | |
eef85c4a | 1502 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1503 | load_extras = true; |
1504 | } | |
1505 | ||
1506 | if (u->load_state == UNIT_NOT_FOUND) { | |
1507 | u->load_state = UNIT_LOADED; | |
1508 | u->load_error = 0; | |
1509 | ||
1510 | /* Load in the extras later on, after we | |
1511 | * finished initialization of the unit */ | |
1512 | ||
1513 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1514 | load_extras = true; | |
1515 | flags->just_changed = true; | |
1516 | } | |
1517 | ||
1518 | if (load_extras) | |
1519 | return mount_add_extras(MOUNT(u)); | |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | ||
628c89cc | 1524 | static int mount_setup_unit( |
e537352b LP |
1525 | Manager *m, |
1526 | const char *what, | |
1527 | const char *where, | |
1528 | const char *options, | |
1529 | const char *fstype, | |
e537352b | 1530 | bool set_flags) { |
057d9ab8 | 1531 | |
03b8cfed FB |
1532 | _cleanup_free_ char *e = NULL; |
1533 | MountSetupFlags flags; | |
057d9ab8 LP |
1534 | Unit *u; |
1535 | int r; | |
b08d03ff | 1536 | |
f50e0a01 | 1537 | assert(m); |
b08d03ff LP |
1538 | assert(what); |
1539 | assert(where); | |
e537352b LP |
1540 | assert(options); |
1541 | assert(fstype); | |
1542 | ||
e537352b LP |
1543 | /* Ignore API mount points. They should never be referenced in |
1544 | * dependencies ever. */ | |
33ff02c9 | 1545 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1546 | return 0; |
b08d03ff | 1547 | |
8d567588 LP |
1548 | if (streq(fstype, "autofs")) |
1549 | return 0; | |
1550 | ||
4e85aff4 LP |
1551 | /* probably some kind of swap, ignore */ |
1552 | if (!is_path(where)) | |
b08d03ff LP |
1553 | return 0; |
1554 | ||
7410616c LP |
1555 | r = unit_name_from_path(where, ".mount", &e); |
1556 | if (r < 0) | |
1557 | return r; | |
b08d03ff | 1558 | |
7d17cfbc MS |
1559 | u = manager_get_unit(m, e); |
1560 | if (!u) { | |
03b8cfed FB |
1561 | /* First time we see this mount point meaning that it's |
1562 | * not been initiated by a mount unit but rather by the | |
1563 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1564 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1565 | if (r < 0) |
1566 | goto fail; | |
1567 | ||
03b8cfed FB |
1568 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1569 | if (r < 0) | |
1570 | unit_free(u); | |
1571 | } else | |
1572 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1573 | |
03b8cfed | 1574 | if (r < 0) |
e537352b | 1575 | goto fail; |
ff5f34d0 | 1576 | |
6b1dc2bd | 1577 | if (set_flags) { |
03b8cfed FB |
1578 | MOUNT(u)->is_mounted = flags.is_mounted; |
1579 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1580 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1581 | } |
1582 | ||
03b8cfed | 1583 | if (flags.just_changed) |
ff5f34d0 | 1584 | unit_add_to_dbus_queue(u); |
c1e1601e | 1585 | |
b08d03ff | 1586 | return 0; |
b08d03ff | 1587 | fail: |
628c89cc | 1588 | log_warning_errno(r, "Failed to set up mount unit: %m"); |
4e85aff4 | 1589 | return r; |
b08d03ff LP |
1590 | } |
1591 | ||
ef734fd6 | 1592 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1593 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1594 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1595 | int r = 0; |
b08d03ff LP |
1596 | |
1597 | assert(m); | |
1598 | ||
628c89cc LP |
1599 | t = mnt_new_table(); |
1600 | if (!t) | |
8d3ae2bd | 1601 | return log_oom(); |
b08d03ff | 1602 | |
628c89cc LP |
1603 | i = mnt_new_iter(MNT_ITER_FORWARD); |
1604 | if (!i) | |
1605 | return log_oom(); | |
1606 | ||
1607 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1608 | if (r < 0) |
628c89cc | 1609 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1610 | |
5cca8def ZJS |
1611 | r = 0; |
1612 | for (;;) { | |
8d3ae2bd | 1613 | const char *device, *path, *options, *fstype; |
527b7a42 | 1614 | _cleanup_free_ char *d = NULL, *p = NULL; |
628c89cc | 1615 | struct libmnt_fs *fs; |
8d3ae2bd | 1616 | int k; |
b08d03ff | 1617 | |
628c89cc | 1618 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1619 | if (k == 1) |
1620 | break; | |
628c89cc LP |
1621 | if (k < 0) |
1622 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1623 | |
8d3ae2bd CL |
1624 | device = mnt_fs_get_source(fs); |
1625 | path = mnt_fs_get_target(fs); | |
1626 | options = mnt_fs_get_options(fs); | |
1627 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1628 | |
c0a7f8d3 DM |
1629 | if (!device || !path) |
1630 | continue; | |
1631 | ||
527b7a42 | 1632 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1633 | return log_oom(); |
1634 | ||
527b7a42 | 1635 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1636 | return log_oom(); |
b08d03ff | 1637 | |
628c89cc LP |
1638 | (void) device_found_node(m, d, true, DEVICE_FOUND_MOUNT, set_flags); |
1639 | ||
1640 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1641 | if (r == 0 && k < 0) |
60b912f6 | 1642 | r = k; |
b08d03ff LP |
1643 | } |
1644 | ||
e537352b LP |
1645 | return r; |
1646 | } | |
1647 | ||
1648 | static void mount_shutdown(Manager *m) { | |
1649 | assert(m); | |
1650 | ||
718db961 LP |
1651 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1652 | ||
d379d442 KZ |
1653 | mnt_unref_monitor(m->mount_monitor); |
1654 | m->mount_monitor = NULL; | |
b08d03ff LP |
1655 | } |
1656 | ||
7a7821c8 | 1657 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1658 | Mount *m = MOUNT(u); |
7a7821c8 | 1659 | usec_t t; |
68db7a3b ZJS |
1660 | int r; |
1661 | ||
1662 | if (!m->timer_event_source) | |
1663 | return 0; | |
1664 | ||
7a7821c8 | 1665 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1666 | if (r < 0) |
1667 | return r; | |
7a7821c8 LP |
1668 | if (t == USEC_INFINITY) |
1669 | return 0; | |
68db7a3b | 1670 | |
7a7821c8 | 1671 | *timeout = t; |
68db7a3b ZJS |
1672 | return 1; |
1673 | } | |
1674 | ||
1201cae7 | 1675 | static int synthesize_root_mount(Manager *m) { |
11222d0f LP |
1676 | Unit *u; |
1677 | int r; | |
1678 | ||
1679 | assert(m); | |
1680 | ||
1681 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1682 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1683 | ||
1684 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1685 | if (!u) { | |
a581e45a | 1686 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
1201cae7 LP |
1687 | if (r < 0) |
1688 | return log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
11222d0f LP |
1689 | } |
1690 | ||
1691 | u->perpetual = true; | |
1692 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1693 | ||
1694 | unit_add_to_load_queue(u); | |
1695 | unit_add_to_dbus_queue(u); | |
1201cae7 LP |
1696 | |
1697 | return 0; | |
11222d0f LP |
1698 | } |
1699 | ||
1700 | static bool mount_is_mounted(Mount *m) { | |
1701 | assert(m); | |
1702 | ||
1703 | return UNIT(m)->perpetual || m->is_mounted; | |
1704 | } | |
1705 | ||
ba64af90 | 1706 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1707 | int r; |
d379d442 | 1708 | |
b08d03ff LP |
1709 | assert(m); |
1710 | ||
1201cae7 LP |
1711 | r = synthesize_root_mount(m); |
1712 | if (r < 0) | |
1713 | goto fail; | |
11222d0f | 1714 | |
8d3ae2bd CL |
1715 | mnt_init_debug(0); |
1716 | ||
d379d442 KZ |
1717 | if (!m->mount_monitor) { |
1718 | int fd; | |
ef734fd6 | 1719 | |
d379d442 KZ |
1720 | m->mount_monitor = mnt_new_monitor(); |
1721 | if (!m->mount_monitor) { | |
ba64af90 | 1722 | log_oom(); |
718db961 | 1723 | goto fail; |
d379d442 | 1724 | } |
29083707 | 1725 | |
d379d442 | 1726 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1727 | if (r < 0) { |
1728 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1729 | goto fail; |
ba64af90 LP |
1730 | } |
1731 | ||
d379d442 | 1732 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1733 | if (r < 0) { |
1734 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1735 | goto fail; |
ba64af90 | 1736 | } |
90598531 | 1737 | |
d379d442 KZ |
1738 | /* mnt_unref_monitor() will close the fd */ |
1739 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1740 | if (r < 0) { |
1741 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1742 | goto fail; |
ba64af90 | 1743 | } |
befb6d54 | 1744 | |
d379d442 | 1745 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1746 | if (r < 0) { |
1747 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1748 | goto fail; |
ba64af90 | 1749 | } |
befb6d54 | 1750 | |
d379d442 | 1751 | r = sd_event_source_set_priority(m->mount_event_source, -10); |
ba64af90 LP |
1752 | if (r < 0) { |
1753 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1754 | goto fail; |
ba64af90 | 1755 | } |
7dfbe2e3 | 1756 | |
d379d442 | 1757 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1758 | } |
1759 | ||
e62d8c39 ZJS |
1760 | r = mount_load_proc_self_mountinfo(m, false); |
1761 | if (r < 0) | |
b08d03ff LP |
1762 | goto fail; |
1763 | ||
ba64af90 | 1764 | return; |
b08d03ff LP |
1765 | |
1766 | fail: | |
1767 | mount_shutdown(m); | |
5cb5a6ff LP |
1768 | } |
1769 | ||
718db961 | 1770 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1771 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1772 | Manager *m = userdata; |
fcd8b266 LP |
1773 | const char *what; |
1774 | Iterator i; | |
595ed347 | 1775 | Unit *u; |
ef734fd6 LP |
1776 | int r; |
1777 | ||
1778 | assert(m); | |
d379d442 | 1779 | assert(revents & EPOLLIN); |
ef734fd6 | 1780 | |
d379d442 | 1781 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1782 | bool rescan = false; |
befb6d54 | 1783 | |
d379d442 KZ |
1784 | /* Drain all events and verify that the event is valid. |
1785 | * | |
1786 | * Note that libmount also monitors /run/mount mkdir if the | |
1787 | * directory does not exist yet. The mkdir may generate event | |
1788 | * which is irrelevant for us. | |
1789 | * | |
1790 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1791 | do { | |
1792 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1793 | if (r == 0) | |
1794 | rescan = true; | |
1795 | else if (r < 0) | |
1796 | return log_error_errno(r, "Failed to drain libmount events"); | |
1797 | } while (r == 0); | |
1798 | ||
1799 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1800 | if (!rescan) |
1801 | return 0; | |
1802 | } | |
ef734fd6 | 1803 | |
4f0eedb7 ZJS |
1804 | r = mount_load_proc_self_mountinfo(m, true); |
1805 | if (r < 0) { | |
e537352b | 1806 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1807 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1808 | Mount *mount = MOUNT(u); | |
e537352b LP |
1809 | |
1810 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1811 | } | |
1812 | ||
718db961 | 1813 | return 0; |
ef734fd6 LP |
1814 | } |
1815 | ||
1816 | manager_dispatch_load_queue(m); | |
1817 | ||
595ed347 MS |
1818 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1819 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1820 | |
11222d0f | 1821 | if (!mount_is_mounted(mount)) { |
e537352b | 1822 | |
394763f6 LP |
1823 | /* A mount point is not around right now. It |
1824 | * might be gone, or might never have | |
1825 | * existed. */ | |
1826 | ||
1827 | if (mount->from_proc_self_mountinfo && | |
1828 | mount->parameters_proc_self_mountinfo.what) { | |
1829 | ||
1830 | /* Remember that this device might just have disappeared */ | |
1831 | if (set_ensure_allocated(&gone, &string_hash_ops) < 0 || | |
1832 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) | |
1833 | log_oom(); /* we don't care too much about OOM here... */ | |
1834 | } | |
fcd8b266 | 1835 | |
ef734fd6 | 1836 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1837 | |
1838 | switch (mount->state) { | |
1839 | ||
1840 | case MOUNT_MOUNTED: | |
aef83136 LP |
1841 | /* This has just been unmounted by |
1842 | * somebody else, follow the state | |
1843 | * change. */ | |
cf6f7f66 | 1844 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1845 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1846 | break; |
1847 | ||
1848 | default: | |
e537352b | 1849 | break; |
e537352b LP |
1850 | } |
1851 | ||
1852 | } else if (mount->just_mounted || mount->just_changed) { | |
1853 | ||
fcd8b266 | 1854 | /* A mount point was added or changed */ |
e537352b LP |
1855 | |
1856 | switch (mount->state) { | |
1857 | ||
1858 | case MOUNT_DEAD: | |
fdf20a31 | 1859 | case MOUNT_FAILED: |
4b58153d LP |
1860 | |
1861 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1862 | * generate a new invocation ID for this implicitly and automatically. */ | |
1863 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1864 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1865 | break; |
1866 | ||
1867 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1868 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1869 | break; |
1870 | ||
1871 | default: | |
1872 | /* Nothing really changed, but let's | |
1873 | * issue an notification call | |
1874 | * nonetheless, in case somebody is | |
1875 | * waiting for this. (e.g. file system | |
1876 | * ro/rw remounts.) */ | |
1877 | mount_set_state(mount, mount->state); | |
1878 | break; | |
1879 | } | |
394763f6 | 1880 | } |
fcd8b266 | 1881 | |
11222d0f | 1882 | if (mount_is_mounted(mount) && |
394763f6 LP |
1883 | mount->from_proc_self_mountinfo && |
1884 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1885 | |
394763f6 LP |
1886 | if (set_ensure_allocated(&around, &string_hash_ops) < 0 || |
1887 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) | |
1888 | log_oom(); | |
e537352b LP |
1889 | } |
1890 | ||
1891 | /* Reset the flags for later calls */ | |
1892 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1893 | } | |
718db961 | 1894 | |
fcd8b266 LP |
1895 | SET_FOREACH(what, gone, i) { |
1896 | if (set_contains(around, what)) | |
1897 | continue; | |
1898 | ||
1899 | /* Let the device units know that the device is no longer mounted */ | |
1900 | (void) device_found_node(m, what, false, DEVICE_FOUND_MOUNT, true); | |
1901 | } | |
1902 | ||
718db961 | 1903 | return 0; |
e537352b LP |
1904 | } |
1905 | ||
fdf20a31 | 1906 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1907 | Mount *m = MOUNT(u); |
1908 | ||
1909 | assert(m); | |
1910 | ||
fdf20a31 | 1911 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1912 | mount_set_state(m, MOUNT_DEAD); |
1913 | ||
9d2f5178 LP |
1914 | m->result = MOUNT_SUCCESS; |
1915 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1916 | } |
1917 | ||
718db961 | 1918 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1919 | Mount *m = MOUNT(u); |
1920 | ||
1921 | assert(m); | |
1922 | ||
814cc562 | 1923 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1924 | } |
1925 | ||
291d565a LP |
1926 | static int mount_control_pid(Unit *u) { |
1927 | Mount *m = MOUNT(u); | |
1928 | ||
1929 | assert(m); | |
1930 | ||
1931 | return m->control_pid; | |
1932 | } | |
1933 | ||
a16e1123 LP |
1934 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1935 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1936 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1937 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1938 | }; | |
1939 | ||
1940 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1941 | ||
9d2f5178 LP |
1942 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1943 | [MOUNT_SUCCESS] = "success", | |
1944 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1945 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1946 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1947 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1948 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1949 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
9d2f5178 LP |
1950 | }; |
1951 | ||
1952 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1953 | ||
87f0e418 | 1954 | const UnitVTable mount_vtable = { |
7d17cfbc | 1955 | .object_size = sizeof(Mount), |
718db961 LP |
1956 | .exec_context_offset = offsetof(Mount, exec_context), |
1957 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1958 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1959 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1960 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1961 | |
f975e971 LP |
1962 | .sections = |
1963 | "Unit\0" | |
1964 | "Mount\0" | |
1965 | "Install\0", | |
4ad49000 | 1966 | .private_section = "Mount", |
71645aca | 1967 | |
e537352b LP |
1968 | .init = mount_init, |
1969 | .load = mount_load, | |
034c6ed7 | 1970 | .done = mount_done, |
e537352b | 1971 | |
f50e0a01 LP |
1972 | .coldplug = mount_coldplug, |
1973 | ||
034c6ed7 | 1974 | .dump = mount_dump, |
5cb5a6ff | 1975 | |
e537352b LP |
1976 | .start = mount_start, |
1977 | .stop = mount_stop, | |
1978 | .reload = mount_reload, | |
1979 | ||
8a0867d6 LP |
1980 | .kill = mount_kill, |
1981 | ||
a16e1123 LP |
1982 | .serialize = mount_serialize, |
1983 | .deserialize_item = mount_deserialize_item, | |
1984 | ||
f50e0a01 | 1985 | .active_state = mount_active_state, |
10a94420 | 1986 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1987 | |
701cc384 LP |
1988 | .check_gc = mount_check_gc, |
1989 | ||
e537352b | 1990 | .sigchld_event = mount_sigchld_event, |
e537352b | 1991 | |
fdf20a31 | 1992 | .reset_failed = mount_reset_failed, |
291d565a LP |
1993 | |
1994 | .control_pid = mount_control_pid, | |
5632e374 | 1995 | |
718db961 | 1996 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1997 | .bus_set_property = bus_mount_set_property, |
1998 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1999 | |
68db7a3b ZJS |
2000 | .get_timeout = mount_get_timeout, |
2001 | ||
0e252f6b TG |
2002 | .can_transient = true, |
2003 | ||
f50e0a01 | 2004 | .enumerate = mount_enumerate, |
c6918296 MS |
2005 | .shutdown = mount_shutdown, |
2006 | ||
2007 | .status_message_formats = { | |
2008 | .starting_stopping = { | |
2009 | [0] = "Mounting %s...", | |
2010 | [1] = "Unmounting %s...", | |
2011 | }, | |
2012 | .finished_start_job = { | |
2013 | [JOB_DONE] = "Mounted %s.", | |
2014 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2015 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2016 | }, | |
2017 | .finished_stop_job = { | |
2018 | [JOB_DONE] = "Unmounted %s.", | |
2019 | [JOB_FAILED] = "Failed unmounting %s.", | |
2020 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2021 | }, | |
2022 | }, | |
5cb5a6ff | 2023 | }; |