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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
5cb5a6ff | 20 | #include <errno.h> |
4f5dd394 | 21 | #include <signal.h> |
b08d03ff | 22 | #include <stdio.h> |
ef734fd6 | 23 | #include <sys/epoll.h> |
5cb5a6ff | 24 | |
20ad4cfd | 25 | #include "sd-messages.h" |
4f5dd394 | 26 | |
b5efdb8a | 27 | #include "alloc-util.h" |
4139c1b2 | 28 | #include "dbus-mount.h" |
4f5dd394 | 29 | #include "escape.h" |
9a57c629 | 30 | #include "exit-status.h" |
f97b34a6 | 31 | #include "format-util.h" |
4f5dd394 LP |
32 | #include "fstab-util.h" |
33 | #include "log.h" | |
34 | #include "manager.h" | |
35 | #include "mkdir.h" | |
36 | #include "mount-setup.h" | |
4e036b7a | 37 | #include "mount-util.h" |
4f5dd394 | 38 | #include "mount.h" |
6bedfcbb | 39 | #include "parse-util.h" |
4f5dd394 | 40 | #include "path-util.h" |
7b3e062c | 41 | #include "process-util.h" |
4f5dd394 | 42 | #include "special.h" |
8b43440b | 43 | #include "string-table.h" |
b5efdb8a | 44 | #include "string-util.h" |
4f5dd394 LP |
45 | #include "strv.h" |
46 | #include "unit-name.h" | |
47 | #include "unit.h" | |
5cb5a6ff | 48 | |
7d54a03a LP |
49 | #define RETRY_UMOUNT_MAX 32 |
50 | ||
4e920142 ZJS |
51 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
52 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
53 | ||
f50e0a01 LP |
54 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
55 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
56 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 57 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 58 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 59 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 60 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
61 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
62 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
63 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
64 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 65 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 66 | }; |
5cb5a6ff | 67 | |
718db961 LP |
68 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
69 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
70 | ||
c634f3d2 LP |
71 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
72 | return IN_SET(state, | |
73 | MOUNT_MOUNTING, | |
74 | MOUNT_MOUNTING_DONE, | |
75 | MOUNT_REMOUNTING, | |
76 | MOUNT_REMOUNTING_SIGTERM, | |
77 | MOUNT_REMOUNTING_SIGKILL, | |
78 | MOUNT_UNMOUNTING, | |
79 | MOUNT_UNMOUNTING_SIGTERM, | |
80 | MOUNT_UNMOUNTING_SIGKILL); | |
81 | } | |
82 | ||
affc3d83 | 83 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 84 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
85 | return true; |
86 | ||
affc3d83 | 87 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
88 | return true; |
89 | ||
90 | return false; | |
91 | } | |
92 | ||
e6a7b9f4 | 93 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
94 | assert(p); |
95 | ||
96 | return mount_needs_network(p->options, p->fstype); | |
97 | } | |
98 | ||
d3bd0986 MK |
99 | static bool mount_is_loop(const MountParameters *p) { |
100 | assert(p); | |
101 | ||
102 | if (fstab_test_option(p->options, "loop\0")) | |
103 | return true; | |
104 | ||
105 | return false; | |
106 | } | |
107 | ||
e6a7b9f4 | 108 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
109 | assert(p); |
110 | ||
d15d0333 | 111 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
112 | return true; |
113 | ||
d15d0333 | 114 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
115 | return true; |
116 | ||
117 | return false; | |
118 | } | |
119 | ||
e6a7b9f4 | 120 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
121 | assert(p); |
122 | ||
d15d0333 | 123 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
124 | } |
125 | ||
2b14df4a FB |
126 | static bool mount_is_automount(const MountParameters *p) { |
127 | assert(p); | |
128 | ||
129 | return fstab_test_option(p->options, | |
130 | "comment=systemd.automount\0" | |
131 | "x-systemd.automount\0"); | |
132 | } | |
133 | ||
ebc8968b FB |
134 | static bool mount_is_bound_to_device(const Mount *m) { |
135 | const MountParameters *p; | |
136 | ||
137 | if (m->from_fragment) | |
138 | return true; | |
139 | ||
140 | p = &m->parameters_proc_self_mountinfo; | |
141 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
142 | } | |
143 | ||
e6a7b9f4 | 144 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
145 | assert(p); |
146 | ||
11041c84 | 147 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 148 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 149 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
150 | return false; |
151 | ||
152 | if (mount_is_bind(p)) | |
153 | return false; | |
154 | ||
d15d0333 ZJS |
155 | return fstab_test_option(p->options, |
156 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
157 | } |
158 | ||
a16e1123 LP |
159 | static void mount_init(Unit *u) { |
160 | Mount *m = MOUNT(u); | |
5cb5a6ff | 161 | |
a16e1123 | 162 | assert(u); |
ac155bb8 | 163 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 164 | |
1f19a534 | 165 | m->timeout_usec = u->manager->default_timeout_start_usec; |
3e5235b0 LP |
166 | m->directory_mode = 0755; |
167 | ||
f00929ad DJL |
168 | /* We need to make sure that /usr/bin/mount is always called |
169 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
170 | * side doesn't send us another mount request while we are |
171 | * already trying to comply its last one. */ | |
74922904 | 172 | m->exec_context.same_pgrp = true; |
8d567588 | 173 | |
a16e1123 | 174 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 175 | |
5bcb0f2b | 176 | u->ignore_on_isolate = true; |
8d567588 LP |
177 | } |
178 | ||
36c16a7c | 179 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
180 | int r; |
181 | ||
182 | assert(m); | |
183 | ||
718db961 | 184 | if (m->timer_event_source) { |
36c16a7c | 185 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
186 | if (r < 0) |
187 | return r; | |
188 | ||
189 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
190 | } | |
191 | ||
36c16a7c LP |
192 | if (usec == USEC_INFINITY) |
193 | return 0; | |
194 | ||
7dfbe2e3 | 195 | r = sd_event_add_time( |
6a0f1f6d LP |
196 | UNIT(m)->manager->event, |
197 | &m->timer_event_source, | |
198 | CLOCK_MONOTONIC, | |
36c16a7c | 199 | usec, 0, |
6a0f1f6d | 200 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
201 | if (r < 0) |
202 | return r; | |
203 | ||
204 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
205 | ||
206 | return 0; | |
718db961 LP |
207 | } |
208 | ||
a16e1123 | 209 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
210 | assert(m); |
211 | ||
212 | if (m->control_pid <= 0) | |
213 | return; | |
214 | ||
215 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
216 | m->control_pid = 0; | |
217 | } | |
218 | ||
e537352b LP |
219 | static void mount_parameters_done(MountParameters *p) { |
220 | assert(p); | |
221 | ||
222 | free(p->what); | |
223 | free(p->options); | |
224 | free(p->fstype); | |
225 | ||
226 | p->what = p->options = p->fstype = NULL; | |
227 | } | |
228 | ||
87f0e418 | 229 | static void mount_done(Unit *u) { |
ef734fd6 | 230 | Mount *m = MOUNT(u); |
034c6ed7 | 231 | |
ef734fd6 | 232 | assert(m); |
034c6ed7 | 233 | |
a1e58e8e | 234 | m->where = mfree(m->where); |
f50e0a01 | 235 | |
e537352b LP |
236 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
237 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 238 | |
613b411c | 239 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); |
e537352b LP |
240 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
241 | m->control_command = NULL; | |
f50e0a01 | 242 | |
29206d46 LP |
243 | dynamic_creds_unref(&m->dynamic_creds); |
244 | ||
a16e1123 | 245 | mount_unwatch_control_pid(m); |
f50e0a01 | 246 | |
718db961 | 247 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
248 | } |
249 | ||
44a6b1b6 | 250 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
251 | assert(m); |
252 | ||
253 | if (m->from_fragment) | |
254 | return &m->parameters_fragment; | |
cb39ed3f LP |
255 | |
256 | return NULL; | |
257 | } | |
258 | ||
44a6b1b6 | 259 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
260 | assert(m); |
261 | ||
262 | if (m->from_proc_self_mountinfo) | |
263 | return &m->parameters_proc_self_mountinfo; | |
264 | ||
6b1dc2bd | 265 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
266 | } |
267 | ||
eef85c4a | 268 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 269 | MountParameters *pm; |
ac155bb8 | 270 | Unit *other; |
a57f7e2c LP |
271 | Iterator i; |
272 | Set *s; | |
b08d03ff LP |
273 | int r; |
274 | ||
6e2ef85b | 275 | assert(m); |
b08d03ff | 276 | |
a57f7e2c | 277 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
278 | _cleanup_free_ char *parent = NULL; |
279 | ||
280 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
281 | |
282 | parent = dirname_malloc(m->where); | |
283 | if (!parent) | |
284 | return -ENOMEM; | |
01f78473 | 285 | |
eef85c4a | 286 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 287 | if (r < 0) |
01f78473 | 288 | return r; |
4f0eedb7 | 289 | } |
01f78473 | 290 | |
eef85c4a LP |
291 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
292 | * or a loop mount) to be available. */ | |
a57f7e2c | 293 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
294 | if (pm && pm->what && |
295 | path_is_absolute(pm->what) && | |
d3bd0986 | 296 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 297 | |
eef85c4a | 298 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 299 | if (r < 0) |
6e2ef85b | 300 | return r; |
4f0eedb7 | 301 | } |
b08d03ff | 302 | |
eef85c4a | 303 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
304 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
305 | SET_FOREACH(other, s, i) { | |
b08d03ff | 306 | |
a57f7e2c LP |
307 | if (other->load_state != UNIT_LOADED) |
308 | continue; | |
b08d03ff | 309 | |
a57f7e2c LP |
310 | if (other == UNIT(m)) |
311 | continue; | |
b08d03ff | 312 | |
eef85c4a | 313 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 314 | if (r < 0) |
6e2ef85b | 315 | return r; |
b08d03ff | 316 | |
a57f7e2c LP |
317 | if (UNIT(m)->fragment_path) { |
318 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 319 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
320 | if (r < 0) |
321 | return r; | |
322 | } | |
7c8fa05c LP |
323 | } |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
eef85c4a | 328 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 329 | bool device_wants_mount = false; |
eef85c4a LP |
330 | UnitDependencyMask mask; |
331 | MountParameters *p; | |
ebc8968b | 332 | UnitDependency dep; |
9fff8a1f | 333 | int r; |
173a8d04 LP |
334 | |
335 | assert(m); | |
336 | ||
06e97888 | 337 | p = get_mount_parameters(m); |
6b1dc2bd | 338 | if (!p) |
173a8d04 LP |
339 | return 0; |
340 | ||
9fff8a1f | 341 | if (!p->what) |
173a8d04 | 342 | return 0; |
5c78d8e2 | 343 | |
dd144c63 LP |
344 | if (mount_is_bind(p)) |
345 | return 0; | |
346 | ||
347 | if (!is_device_path(p->what)) | |
348 | return 0; | |
349 | ||
7ba2711d LP |
350 | /* /dev/root is a really weird thing, it's not a real device, |
351 | * but just a path the kernel exports for the root file system | |
352 | * specified on the kernel command line. Ignore it here. */ | |
353 | if (path_equal(p->what, "/dev/root")) | |
354 | return 0; | |
355 | ||
dd144c63 LP |
356 | if (path_equal(m->where, "/")) |
357 | return 0; | |
358 | ||
463d0d15 | 359 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
360 | device_wants_mount = true; |
361 | ||
ebc8968b FB |
362 | /* Mount units from /proc/self/mountinfo are not bound to devices |
363 | * by default since they're subject to races when devices are | |
364 | * unplugged. But the user can still force this dep with an | |
365 | * appropriate option (or udev property) so the mount units are | |
366 | * automatically stopped when the device disappears suddenly. */ | |
367 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
368 | ||
eef85c4a LP |
369 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
370 | ||
371 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
372 | if (r < 0) |
373 | return r; | |
9fff8a1f | 374 | |
9fff8a1f | 375 | return 0; |
173a8d04 LP |
376 | } |
377 | ||
eef85c4a LP |
378 | static int mount_add_quota_dependencies(Mount *m) { |
379 | UnitDependencyMask mask; | |
6b1dc2bd | 380 | MountParameters *p; |
eef85c4a | 381 | int r; |
6b1dc2bd LP |
382 | |
383 | assert(m); | |
384 | ||
463d0d15 | 385 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
386 | return 0; |
387 | ||
388 | p = get_mount_parameters_fragment(m); | |
389 | if (!p) | |
390 | return 0; | |
391 | ||
392 | if (!needs_quota(p)) | |
393 | return 0; | |
394 | ||
eef85c4a LP |
395 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
396 | ||
397 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true, mask); | |
6b1dc2bd LP |
398 | if (r < 0) |
399 | return r; | |
400 | ||
eef85c4a | 401 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true, mask); |
6b1dc2bd LP |
402 | if (r < 0) |
403 | return r; | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
ad2706db | 408 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 409 | MountParameters *p; |
ad2706db | 410 | assert(m); |
88ac30a1 | 411 | |
ad2706db LP |
412 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
413 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
414 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
415 | ||
416 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
417 | return true; | |
418 | ||
419 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
420 | "/", | |
421 | "/usr")) | |
422 | return true; | |
88ac30a1 | 423 | |
ad2706db LP |
424 | if (PATH_STARTSWITH_SET(m->where, |
425 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
426 | "/proc", /* All of this is API VFS */ | |
427 | "/sys", /* … dito … */ | |
428 | "/dev")) /* … dito … */ | |
429 | return true; | |
430 | ||
431 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 432 | p = get_mount_parameters(m); |
ad2706db LP |
433 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
434 | return true; | |
88ac30a1 | 435 | |
ad2706db | 436 | return false; |
88ac30a1 TG |
437 | } |
438 | ||
2edd4434 | 439 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
440 | UnitDependencyMask mask; |
441 | int r; | |
9ddc4a26 | 442 | MountParameters *p; |
ea0ec5ce | 443 | const char *after; |
2edd4434 LP |
444 | |
445 | assert(m); | |
446 | ||
4c9ea260 LP |
447 | if (!UNIT(m)->default_dependencies) |
448 | return 0; | |
449 | ||
ad2706db LP |
450 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
451 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
452 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
453 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 454 | return 0; |
2edd4434 | 455 | |
874d3404 LP |
456 | p = get_mount_parameters(m); |
457 | if (!p) | |
6b1dc2bd LP |
458 | return 0; |
459 | ||
eef85c4a LP |
460 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
461 | ||
e8d2f6cd | 462 | if (mount_is_network(p)) { |
ea0ec5ce LP |
463 | /* We order ourselves after network.target. This is |
464 | * primarily useful at shutdown: services that take | |
465 | * down the network should order themselves before | |
466 | * network.target, so that they are shut down only | |
467 | * after this mount unit is stopped. */ | |
6b1dc2bd | 468 | |
eef85c4a | 469 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, NULL, true, mask); |
a63a5c46 LP |
470 | if (r < 0) |
471 | return r; | |
a63a5c46 | 472 | |
ea0ec5ce LP |
473 | /* We pull in network-online.target, and order |
474 | * ourselves after it. This is useful at start-up to | |
475 | * actively pull in tools that want to be started | |
476 | * before we start mounting network file systems, and | |
477 | * whose purpose it is to delay this until the network | |
478 | * is "up". */ | |
479 | ||
eef85c4a | 480 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, NULL, true, mask); |
e8d2f6cd LP |
481 | if (r < 0) |
482 | return r; | |
ea0ec5ce LP |
483 | |
484 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
485 | } else | |
486 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
487 | ||
eef85c4a | 488 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true, mask); |
ea0ec5ce LP |
489 | if (r < 0) |
490 | return r; | |
e8d2f6cd | 491 | |
eef85c4a | 492 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, mask); |
ad2706db LP |
493 | if (r < 0) |
494 | return r; | |
2edd4434 | 495 | |
3e3852b3 | 496 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 497 | if (streq_ptr(p->fstype, "tmpfs")) { |
3e3852b3 LP |
498 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, NULL, true, mask); |
499 | if (r < 0) | |
500 | return r; | |
501 | } | |
502 | ||
2edd4434 LP |
503 | return 0; |
504 | } | |
505 | ||
8d567588 | 506 | static int mount_verify(Mount *m) { |
a57f7e2c | 507 | _cleanup_free_ char *e = NULL; |
b294b79f | 508 | MountParameters *p; |
7410616c | 509 | int r; |
a57f7e2c | 510 | |
8d567588 LP |
511 | assert(m); |
512 | ||
1124fe6f | 513 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
514 | return 0; |
515 | ||
1df96fcb | 516 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
517 | return -ENOENT; |
518 | ||
7410616c LP |
519 | r = unit_name_from_path(m->where, ".mount", &e); |
520 | if (r < 0) | |
f2341e0a | 521 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 522 | |
7410616c | 523 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 524 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
525 | return -EINVAL; |
526 | } | |
527 | ||
33ff02c9 | 528 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 529 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
33ff02c9 LP |
530 | return -EINVAL; |
531 | } | |
532 | ||
b294b79f MO |
533 | p = get_mount_parameters_fragment(m); |
534 | if (p && !p->what) { | |
f2341e0a | 535 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
4e85aff4 LP |
536 | return -EBADMSG; |
537 | } | |
538 | ||
4819ff03 | 539 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 540 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
4d0e5dbd LP |
541 | return -EINVAL; |
542 | } | |
543 | ||
8d567588 LP |
544 | return 0; |
545 | } | |
546 | ||
1a4ac875 MS |
547 | static int mount_add_extras(Mount *m) { |
548 | Unit *u = UNIT(m); | |
e537352b LP |
549 | int r; |
550 | ||
e821075a LP |
551 | assert(m); |
552 | ||
553 | if (u->fragment_path) | |
1a4ac875 | 554 | m->from_fragment = true; |
e537352b | 555 | |
1a4ac875 | 556 | if (!m->where) { |
7410616c LP |
557 | r = unit_name_to_path(u->id, &m->where); |
558 | if (r < 0) | |
559 | return r; | |
1a4ac875 | 560 | } |
a16e1123 | 561 | |
1a4ac875 | 562 | path_kill_slashes(m->where); |
e537352b | 563 | |
e821075a | 564 | if (!u->description) { |
1a4ac875 MS |
565 | r = unit_set_description(u, m->where); |
566 | if (r < 0) | |
173a8d04 | 567 | return r; |
1a4ac875 | 568 | } |
6e2ef85b | 569 | |
eef85c4a | 570 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
571 | if (r < 0) |
572 | return r; | |
6e2ef85b | 573 | |
eef85c4a | 574 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
575 | if (r < 0) |
576 | return r; | |
6e2ef85b | 577 | |
eef85c4a | 578 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
579 | if (r < 0) |
580 | return r; | |
e537352b | 581 | |
598459ce LP |
582 | r = unit_patch_contexts(u); |
583 | if (r < 0) | |
584 | return r; | |
4e67ddd6 | 585 | |
598459ce | 586 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
587 | if (r < 0) |
588 | return r; | |
589 | ||
d79200e2 | 590 | r = unit_set_default_slice(u); |
1a4ac875 MS |
591 | if (r < 0) |
592 | return r; | |
593 | ||
4c9ea260 LP |
594 | r = mount_add_default_dependencies(m); |
595 | if (r < 0) | |
596 | return r; | |
598459ce | 597 | |
1a4ac875 MS |
598 | return 0; |
599 | } | |
600 | ||
11222d0f LP |
601 | static int mount_load_root_mount(Unit *u) { |
602 | assert(u); | |
603 | ||
604 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
605 | return 0; | |
606 | ||
607 | u->perpetual = true; | |
608 | u->default_dependencies = false; | |
609 | ||
610 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
611 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
612 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
613 | ||
614 | if (!u->description) | |
615 | u->description = strdup("Root Mount"); | |
616 | ||
617 | return 1; | |
618 | } | |
619 | ||
1a4ac875 MS |
620 | static int mount_load(Unit *u) { |
621 | Mount *m = MOUNT(u); | |
622 | int r; | |
623 | ||
624 | assert(u); | |
625 | assert(u->load_state == UNIT_STUB); | |
626 | ||
11222d0f LP |
627 | r = mount_load_root_mount(u); |
628 | if (r < 0) | |
629 | return r; | |
630 | ||
631 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
632 | r = unit_load_fragment_and_dropin_optional(u); |
633 | else | |
634 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
635 | if (r < 0) |
636 | return r; | |
155da457 | 637 | |
1a4ac875 MS |
638 | /* This is a new unit? Then let's add in some extras */ |
639 | if (u->load_state == UNIT_LOADED) { | |
640 | r = mount_add_extras(m); | |
641 | if (r < 0) | |
642 | return r; | |
e537352b LP |
643 | } |
644 | ||
8d567588 | 645 | return mount_verify(m); |
e537352b LP |
646 | } |
647 | ||
648 | static void mount_set_state(Mount *m, MountState state) { | |
649 | MountState old_state; | |
650 | assert(m); | |
651 | ||
652 | old_state = m->state; | |
653 | m->state = state; | |
654 | ||
c634f3d2 | 655 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 656 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 657 | mount_unwatch_control_pid(m); |
e537352b | 658 | m->control_command = NULL; |
a16e1123 | 659 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
660 | } |
661 | ||
662 | if (state != old_state) | |
f2341e0a | 663 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 664 | |
9d2f5178 | 665 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
666 | } |
667 | ||
be847e82 | 668 | static int mount_coldplug(Unit *u) { |
e537352b | 669 | Mount *m = MOUNT(u); |
a16e1123 LP |
670 | MountState new_state = MOUNT_DEAD; |
671 | int r; | |
e537352b LP |
672 | |
673 | assert(m); | |
674 | assert(m->state == MOUNT_DEAD); | |
675 | ||
a16e1123 LP |
676 | if (m->deserialized_state != m->state) |
677 | new_state = m->deserialized_state; | |
678 | else if (m->from_proc_self_mountinfo) | |
679 | new_state = MOUNT_MOUNTED; | |
e537352b | 680 | |
5bcb0f2b LP |
681 | if (new_state == m->state) |
682 | return 0; | |
e537352b | 683 | |
c386f588 LP |
684 | if (m->control_pid > 0 && |
685 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 686 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
687 | |
688 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
689 | if (r < 0) | |
690 | return r; | |
e537352b | 691 | |
36c16a7c | 692 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
693 | if (r < 0) |
694 | return r; | |
a16e1123 | 695 | } |
e537352b | 696 | |
29206d46 LP |
697 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) |
698 | (void) unit_setup_dynamic_creds(u); | |
699 | ||
5bcb0f2b | 700 | mount_set_state(m, new_state); |
e537352b | 701 | return 0; |
e537352b LP |
702 | } |
703 | ||
704 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
705 | Mount *m = MOUNT(u); | |
706 | MountParameters *p; | |
707 | ||
708 | assert(m); | |
709 | assert(f); | |
710 | ||
cb39ed3f | 711 | p = get_mount_parameters(m); |
e537352b LP |
712 | |
713 | fprintf(f, | |
714 | "%sMount State: %s\n" | |
81a5c6d0 | 715 | "%sResult: %s\n" |
e537352b LP |
716 | "%sWhere: %s\n" |
717 | "%sWhat: %s\n" | |
718 | "%sFile System Type: %s\n" | |
719 | "%sOptions: %s\n" | |
e537352b LP |
720 | "%sFrom /proc/self/mountinfo: %s\n" |
721 | "%sFrom fragment: %s\n" | |
ad2706db | 722 | "%sExtrinsic: %s\n" |
e520950a | 723 | "%sDirectoryMode: %04o\n" |
49915de2 | 724 | "%sSloppyOptions: %s\n" |
4f8d40a9 BR |
725 | "%sLazyUnmount: %s\n" |
726 | "%sForceUnmount: %s\n", | |
a16e1123 | 727 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 728 | prefix, mount_result_to_string(m->result), |
e537352b | 729 | prefix, m->where, |
1e4fc9b1 HH |
730 | prefix, p ? strna(p->what) : "n/a", |
731 | prefix, p ? strna(p->fstype) : "n/a", | |
732 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
733 | prefix, yes_no(m->from_proc_self_mountinfo), |
734 | prefix, yes_no(m->from_fragment), | |
ad2706db | 735 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 736 | prefix, m->directory_mode, |
49915de2 | 737 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 BR |
738 | prefix, yes_no(m->lazy_unmount), |
739 | prefix, yes_no(m->force_unmount)); | |
e537352b LP |
740 | |
741 | if (m->control_pid > 0) | |
742 | fprintf(f, | |
ccd06097 ZJS |
743 | "%sControl PID: "PID_FMT"\n", |
744 | prefix, m->control_pid); | |
e537352b LP |
745 | |
746 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 747 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 748 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
749 | } |
750 | ||
a16e1123 LP |
751 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
752 | pid_t pid; | |
753 | int r; | |
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 | }; |
a16e1123 LP |
760 | |
761 | assert(m); | |
762 | assert(c); | |
763 | assert(_pid); | |
764 | ||
5ad096b3 | 765 | (void) unit_realize_cgroup(UNIT(m)); |
906c06f6 DM |
766 | if (m->reset_accounting) { |
767 | (void) unit_reset_cpu_accounting(UNIT(m)); | |
768 | (void) unit_reset_ip_accounting(UNIT(m)); | |
769 | m->reset_accounting = false; | |
5ad096b3 | 770 | } |
4ad49000 | 771 | |
613b411c LP |
772 | r = unit_setup_exec_runtime(UNIT(m)); |
773 | if (r < 0) | |
36c16a7c | 774 | return r; |
613b411c | 775 | |
29206d46 LP |
776 | r = unit_setup_dynamic_creds(UNIT(m)); |
777 | if (r < 0) | |
778 | return r; | |
779 | ||
36c16a7c | 780 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 781 | if (r < 0) |
36c16a7c | 782 | return r; |
a16e1123 | 783 | |
19bbdd98 | 784 | manager_set_exec_params(UNIT(m)->manager, &exec_params); |
f0d47797 | 785 | unit_set_exec_params(UNIT(m), &exec_params); |
9fa95f85 | 786 | |
f2341e0a LP |
787 | r = exec_spawn(UNIT(m), |
788 | c, | |
4ad49000 | 789 | &m->exec_context, |
9fa95f85 | 790 | &exec_params, |
613b411c | 791 | m->exec_runtime, |
29206d46 | 792 | &m->dynamic_creds, |
4ad49000 LP |
793 | &pid); |
794 | if (r < 0) | |
36c16a7c | 795 | return r; |
a16e1123 | 796 | |
4ad49000 LP |
797 | r = unit_watch_pid(UNIT(m), pid); |
798 | if (r < 0) | |
a16e1123 | 799 | /* FIXME: we need to do something here */ |
36c16a7c | 800 | return r; |
a16e1123 LP |
801 | |
802 | *_pid = pid; | |
803 | ||
804 | return 0; | |
a16e1123 LP |
805 | } |
806 | ||
9d2f5178 | 807 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
808 | assert(m); |
809 | ||
a0fef983 | 810 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 811 | m->result = f; |
e537352b | 812 | |
ed77d407 LP |
813 | if (m->result != MOUNT_SUCCESS) |
814 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
815 | ||
29206d46 LP |
816 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
817 | ||
613b411c LP |
818 | exec_runtime_destroy(m->exec_runtime); |
819 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); | |
820 | ||
3536f49e | 821 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 822 | |
00d9ef85 LP |
823 | unit_unref_uid_gid(UNIT(m), true); |
824 | ||
29206d46 | 825 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
826 | } |
827 | ||
9d2f5178 | 828 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
829 | assert(m); |
830 | ||
a0fef983 | 831 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 832 | m->result = f; |
80876c20 LP |
833 | |
834 | mount_set_state(m, MOUNT_MOUNTED); | |
835 | } | |
836 | ||
22af0e58 LP |
837 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
838 | assert(m); | |
839 | ||
840 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
841 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
842 | * ultimately we just mirror the kernel's internal state on this. */ | |
843 | ||
844 | if (m->from_proc_self_mountinfo) | |
845 | mount_enter_mounted(m, f); | |
846 | else | |
847 | mount_enter_dead(m, f); | |
848 | } | |
849 | ||
850 | static int state_to_kill_operation(MountState state) { | |
851 | switch (state) { | |
852 | ||
853 | case MOUNT_REMOUNTING_SIGTERM: | |
854 | case MOUNT_UNMOUNTING_SIGTERM: | |
855 | return KILL_TERMINATE; | |
856 | ||
857 | case MOUNT_REMOUNTING_SIGKILL: | |
858 | case MOUNT_UNMOUNTING_SIGKILL: | |
859 | return KILL_KILL; | |
860 | ||
861 | default: | |
862 | return _KILL_OPERATION_INVALID; | |
863 | } | |
864 | } | |
865 | ||
9d2f5178 | 866 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
867 | int r; |
868 | ||
869 | assert(m); | |
870 | ||
a0fef983 | 871 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 872 | m->result = f; |
e537352b | 873 | |
cd2086fe LP |
874 | r = unit_kill_context( |
875 | UNIT(m), | |
876 | &m->kill_context, | |
22af0e58 | 877 | state_to_kill_operation(state), |
cd2086fe LP |
878 | -1, |
879 | m->control_pid, | |
880 | false); | |
881 | if (r < 0) | |
882 | goto fail; | |
e537352b | 883 | |
cd2086fe | 884 | if (r > 0) { |
36c16a7c | 885 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 886 | if (r < 0) |
80876c20 | 887 | goto fail; |
e537352b | 888 | |
80876c20 | 889 | mount_set_state(m, state); |
22af0e58 | 890 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 891 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 892 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 893 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 894 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 895 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 896 | else |
22af0e58 | 897 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
898 | |
899 | return; | |
900 | ||
901 | fail: | |
f2341e0a | 902 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 903 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
904 | } |
905 | ||
9d2f5178 | 906 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
907 | int r; |
908 | ||
909 | assert(m); | |
910 | ||
7d54a03a LP |
911 | /* Start counting our attempts */ |
912 | if (!IN_SET(m->state, | |
913 | MOUNT_UNMOUNTING, | |
914 | MOUNT_UNMOUNTING_SIGTERM, | |
915 | MOUNT_UNMOUNTING_SIGKILL)) | |
916 | m->n_retry_umount = 0; | |
917 | ||
a16e1123 LP |
918 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
919 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 920 | |
83897d54 | 921 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
922 | if (r >= 0 && m->lazy_unmount) |
923 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
924 | if (r >= 0 && m->force_unmount) |
925 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 926 | if (r < 0) |
e537352b LP |
927 | goto fail; |
928 | ||
a16e1123 | 929 | mount_unwatch_control_pid(m); |
5e94833f | 930 | |
7d54a03a LP |
931 | r = mount_spawn(m, m->control_command, &m->control_pid); |
932 | if (r < 0) | |
e537352b LP |
933 | goto fail; |
934 | ||
935 | mount_set_state(m, MOUNT_UNMOUNTING); | |
936 | ||
937 | return; | |
938 | ||
939 | fail: | |
f2341e0a | 940 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 941 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
942 | } |
943 | ||
8d567588 | 944 | static void mount_enter_mounting(Mount *m) { |
e537352b | 945 | int r; |
cb39ed3f | 946 | MountParameters *p; |
e537352b LP |
947 | |
948 | assert(m); | |
949 | ||
a16e1123 LP |
950 | m->control_command_id = MOUNT_EXEC_MOUNT; |
951 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 952 | |
f2341e0a LP |
953 | r = unit_fail_if_symlink(UNIT(m), m->where); |
954 | if (r < 0) | |
955 | goto fail; | |
956 | ||
957 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 958 | |
f2341e0a | 959 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 960 | |
cb39ed3f | 961 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 962 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 963 | if (p && mount_is_bind(p)) |
f2341e0a | 964 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 965 | |
b294b79f | 966 | if (p) { |
17a1c597 ZJS |
967 | _cleanup_free_ char *opts = NULL; |
968 | ||
b294b79f | 969 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
970 | if (r < 0) |
971 | goto fail; | |
972 | ||
b294b79f | 973 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
974 | if (r >= 0 && m->sloppy_options) |
975 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
976 | if (r >= 0 && p->fstype) |
977 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 978 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 979 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 980 | } else |
e537352b | 981 | r = -ENOENT; |
e537352b LP |
982 | if (r < 0) |
983 | goto fail; | |
984 | ||
a16e1123 | 985 | mount_unwatch_control_pid(m); |
5e94833f | 986 | |
257f1d8e LP |
987 | r = mount_spawn(m, m->control_command, &m->control_pid); |
988 | if (r < 0) | |
e537352b LP |
989 | goto fail; |
990 | ||
991 | mount_set_state(m, MOUNT_MOUNTING); | |
992 | ||
993 | return; | |
994 | ||
995 | fail: | |
f2341e0a | 996 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 997 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
998 | } |
999 | ||
850b7410 LP |
1000 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1001 | assert(m); | |
1002 | ||
1003 | /* Only store the first error we encounter */ | |
1004 | if (m->reload_result != MOUNT_SUCCESS) | |
1005 | return; | |
1006 | ||
1007 | m->reload_result = result; | |
1008 | } | |
1009 | ||
9d2f5178 | 1010 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1011 | int r; |
b294b79f | 1012 | MountParameters *p; |
e537352b LP |
1013 | |
1014 | assert(m); | |
1015 | ||
850b7410 LP |
1016 | /* Reset reload result when we are about to start a new remount operation */ |
1017 | m->reload_result = MOUNT_SUCCESS; | |
1018 | ||
a16e1123 LP |
1019 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1020 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1021 | |
b294b79f MO |
1022 | p = get_mount_parameters_fragment(m); |
1023 | if (p) { | |
e537352b LP |
1024 | const char *o; |
1025 | ||
b294b79f MO |
1026 | if (p->options) |
1027 | o = strjoina("remount,", p->options); | |
718db961 | 1028 | else |
e537352b LP |
1029 | o = "remount"; |
1030 | ||
f00929ad | 1031 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1032 | p->what, m->where, |
e86b3761 | 1033 | "-o", o, NULL); |
e86b3761 ZJS |
1034 | if (r >= 0 && m->sloppy_options) |
1035 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1036 | if (r >= 0 && p->fstype) |
1037 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1038 | } else |
e537352b | 1039 | r = -ENOENT; |
60b912f6 | 1040 | if (r < 0) |
e537352b | 1041 | goto fail; |
e537352b | 1042 | |
a16e1123 | 1043 | mount_unwatch_control_pid(m); |
5e94833f | 1044 | |
718db961 LP |
1045 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1046 | if (r < 0) | |
e537352b LP |
1047 | goto fail; |
1048 | ||
1049 | mount_set_state(m, MOUNT_REMOUNTING); | |
1050 | ||
1051 | return; | |
1052 | ||
1053 | fail: | |
f2341e0a | 1054 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1055 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1056 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1057 | } |
1058 | ||
1059 | static int mount_start(Unit *u) { | |
1060 | Mount *m = MOUNT(u); | |
07299350 | 1061 | int r; |
e537352b LP |
1062 | |
1063 | assert(m); | |
1064 | ||
1065 | /* We cannot fulfill this request right now, try again later | |
1066 | * please! */ | |
f2aed307 LP |
1067 | if (IN_SET(m->state, |
1068 | MOUNT_UNMOUNTING, | |
1069 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1070 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1071 | return -EAGAIN; |
1072 | ||
1073 | /* Already on it! */ | |
60b912f6 | 1074 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1075 | return 0; |
1076 | ||
f2aed307 | 1077 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1078 | |
07299350 LP |
1079 | r = unit_start_limit_test(u); |
1080 | if (r < 0) { | |
1081 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1082 | return r; | |
1083 | } | |
1084 | ||
4b58153d LP |
1085 | r = unit_acquire_invocation_id(u); |
1086 | if (r < 0) | |
1087 | return r; | |
1088 | ||
9d2f5178 LP |
1089 | m->result = MOUNT_SUCCESS; |
1090 | m->reload_result = MOUNT_SUCCESS; | |
906c06f6 | 1091 | m->reset_accounting = true; |
9d2f5178 | 1092 | |
8d567588 | 1093 | mount_enter_mounting(m); |
82a2b6bb | 1094 | return 1; |
e537352b LP |
1095 | } |
1096 | ||
1097 | static int mount_stop(Unit *u) { | |
1098 | Mount *m = MOUNT(u); | |
1099 | ||
1100 | assert(m); | |
1101 | ||
22af0e58 LP |
1102 | switch (m->state) { |
1103 | ||
1104 | case MOUNT_UNMOUNTING: | |
1105 | case MOUNT_UNMOUNTING_SIGKILL: | |
1106 | case MOUNT_UNMOUNTING_SIGTERM: | |
1107 | /* Already on it */ | |
e537352b LP |
1108 | return 0; |
1109 | ||
22af0e58 LP |
1110 | case MOUNT_MOUNTING: |
1111 | case MOUNT_MOUNTING_DONE: | |
1112 | case MOUNT_REMOUNTING: | |
1113 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1114 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1115 | return 0; | |
e537352b | 1116 | |
22af0e58 LP |
1117 | case MOUNT_REMOUNTING_SIGTERM: |
1118 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1119 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1120 | return 0; | |
1121 | ||
1122 | case MOUNT_REMOUNTING_SIGKILL: | |
1123 | /* as above */ | |
1124 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1125 | return 0; | |
1126 | ||
1127 | case MOUNT_MOUNTED: | |
1128 | mount_enter_unmounting(m); | |
1129 | return 1; | |
1130 | ||
1131 | default: | |
1132 | assert_not_reached("Unexpected state."); | |
1133 | } | |
e537352b LP |
1134 | } |
1135 | ||
1136 | static int mount_reload(Unit *u) { | |
1137 | Mount *m = MOUNT(u); | |
1138 | ||
1139 | assert(m); | |
1140 | ||
22af0e58 | 1141 | if (m->state == MOUNT_MOUNTING_DONE) /* not yet ready to reload, try again */ |
e537352b LP |
1142 | return -EAGAIN; |
1143 | ||
1144 | assert(m->state == MOUNT_MOUNTED); | |
1145 | ||
9d2f5178 | 1146 | mount_enter_remounting(m); |
22af0e58 | 1147 | |
2d018ae2 | 1148 | return 1; |
e537352b LP |
1149 | } |
1150 | ||
a16e1123 LP |
1151 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1152 | Mount *m = MOUNT(u); | |
1153 | ||
1154 | assert(m); | |
1155 | assert(f); | |
1156 | assert(fds); | |
1157 | ||
1158 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1159 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1160 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1161 | |
1162 | if (m->control_pid > 0) | |
ccd06097 | 1163 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1164 | |
1165 | if (m->control_command_id >= 0) | |
1166 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1172 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1173 | |
1174 | assert(u); | |
1175 | assert(key); | |
1176 | assert(value); | |
1177 | assert(fds); | |
1178 | ||
1179 | if (streq(key, "state")) { | |
1180 | MountState state; | |
1181 | ||
1182 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1183 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1184 | else |
1185 | m->deserialized_state = state; | |
9d2f5178 LP |
1186 | } else if (streq(key, "result")) { |
1187 | MountResult f; | |
a16e1123 | 1188 | |
9d2f5178 LP |
1189 | f = mount_result_from_string(value); |
1190 | if (f < 0) | |
f2341e0a | 1191 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1192 | else if (f != MOUNT_SUCCESS) |
1193 | m->result = f; | |
1194 | ||
1195 | } else if (streq(key, "reload-result")) { | |
1196 | MountResult f; | |
1197 | ||
1198 | f = mount_result_from_string(value); | |
1199 | if (f < 0) | |
f2341e0a | 1200 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1201 | else if (f != MOUNT_SUCCESS) |
1202 | m->reload_result = f; | |
a16e1123 LP |
1203 | |
1204 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1205 | pid_t pid; |
a16e1123 | 1206 | |
e364ad06 | 1207 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1208 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1209 | else |
5925dd3c | 1210 | m->control_pid = pid; |
a16e1123 LP |
1211 | } else if (streq(key, "control-command")) { |
1212 | MountExecCommand id; | |
1213 | ||
f2341e0a LP |
1214 | id = mount_exec_command_from_string(value); |
1215 | if (id < 0) | |
1216 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1217 | else { |
1218 | m->control_command_id = id; | |
1219 | m->control_command = m->exec_command + id; | |
1220 | } | |
a16e1123 | 1221 | } else |
f2341e0a | 1222 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1223 | |
1224 | return 0; | |
1225 | } | |
1226 | ||
44a6b1b6 | 1227 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1228 | assert(u); |
1229 | ||
1230 | return state_translation_table[MOUNT(u)->state]; | |
1231 | } | |
1232 | ||
44a6b1b6 | 1233 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1234 | assert(u); |
1235 | ||
a16e1123 | 1236 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1237 | } |
1238 | ||
44a6b1b6 | 1239 | _pure_ static bool mount_check_gc(Unit *u) { |
701cc384 LP |
1240 | Mount *m = MOUNT(u); |
1241 | ||
1242 | assert(m); | |
1243 | ||
6b1dc2bd | 1244 | return m->from_proc_self_mountinfo; |
701cc384 LP |
1245 | } |
1246 | ||
e537352b LP |
1247 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1248 | Mount *m = MOUNT(u); | |
9d2f5178 | 1249 | MountResult f; |
e537352b LP |
1250 | |
1251 | assert(m); | |
1252 | assert(pid >= 0); | |
1253 | ||
8c47c732 LP |
1254 | if (pid != m->control_pid) |
1255 | return; | |
e537352b | 1256 | |
e537352b LP |
1257 | m->control_pid = 0; |
1258 | ||
1f0958f6 | 1259 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1260 | f = MOUNT_SUCCESS; |
1261 | else if (code == CLD_EXITED) | |
1262 | f = MOUNT_FAILURE_EXIT_CODE; | |
1263 | else if (code == CLD_KILLED) | |
1264 | f = MOUNT_FAILURE_SIGNAL; | |
1265 | else if (code == CLD_DUMPED) | |
1266 | f = MOUNT_FAILURE_CORE_DUMP; | |
1267 | else | |
1268 | assert_not_reached("Unknown code"); | |
1269 | ||
850b7410 LP |
1270 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1271 | mount_set_reload_result(m, f); | |
1272 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1273 | m->result = f; |
8c47c732 | 1274 | |
a16e1123 | 1275 | if (m->control_command) { |
6ea832a2 | 1276 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1277 | |
a16e1123 LP |
1278 | m->control_command = NULL; |
1279 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1280 | } | |
1281 | ||
f2341e0a LP |
1282 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1283 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1284 | |
22af0e58 LP |
1285 | /* Note that mount(8) returning and the kernel sending us a mount table change event might happen |
1286 | * out-of-order. If an operation succeed we assume the kernel will follow soon too and already change into the | |
1287 | * resulting state. If it fails we check if the kernel still knows about the mount. and change state | |
1288 | * accordingly. */ | |
e537352b LP |
1289 | |
1290 | switch (m->state) { | |
1291 | ||
1292 | case MOUNT_MOUNTING: | |
1293 | case MOUNT_MOUNTING_DONE: | |
e537352b | 1294 | |
052364d4 LP |
1295 | if (f == MOUNT_SUCCESS || m->from_proc_self_mountinfo) |
1296 | /* If /bin/mount returned success, or if we see the mount point in /proc/self/mountinfo we are | |
ce954c03 | 1297 | * happy. If we see the first condition first, we should see the second condition |
052364d4 | 1298 | * immediately after – or /bin/mount lies to us and is broken. */ |
9d2f5178 | 1299 | mount_enter_mounted(m, f); |
e537352b | 1300 | else |
9d2f5178 | 1301 | mount_enter_dead(m, f); |
e537352b LP |
1302 | break; |
1303 | ||
e2f3b44c | 1304 | case MOUNT_REMOUNTING: |
e2f3b44c | 1305 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1306 | case MOUNT_REMOUNTING_SIGKILL: |
1307 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1308 | break; |
1309 | ||
e537352b LP |
1310 | case MOUNT_UNMOUNTING: |
1311 | case MOUNT_UNMOUNTING_SIGKILL: | |
1312 | case MOUNT_UNMOUNTING_SIGTERM: | |
1313 | ||
22af0e58 LP |
1314 | if (m->from_proc_self_mountinfo) { |
1315 | ||
1316 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
1317 | * stacked on top of each other. Note that due to the io event priority logic we can be sure | |
1318 | * the new mountinfo is loaded before we process the SIGCHLD for the mount command. */ | |
1319 | ||
1320 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1321 | log_unit_debug(u, "Mount still present, trying again."); | |
1322 | m->n_retry_umount++; | |
1323 | mount_enter_unmounting(m); | |
1324 | } else { | |
1325 | log_unit_debug(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); | |
1326 | mount_enter_mounted(m, f); | |
1327 | } | |
1328 | } else | |
9d2f5178 | 1329 | mount_enter_dead(m, f); |
22af0e58 | 1330 | |
e537352b LP |
1331 | break; |
1332 | ||
1333 | default: | |
1334 | assert_not_reached("Uh, control process died at wrong time."); | |
1335 | } | |
c4e2ceae LP |
1336 | |
1337 | /* Notify clients about changed exit status */ | |
1338 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1339 | } |
1340 | ||
718db961 LP |
1341 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1342 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1343 | |
1344 | assert(m); | |
718db961 | 1345 | assert(m->timer_event_source == source); |
e537352b LP |
1346 | |
1347 | switch (m->state) { | |
1348 | ||
1349 | case MOUNT_MOUNTING: | |
1350 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1351 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1352 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1353 | break; |
1354 | ||
1355 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1356 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1357 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1358 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1359 | break; |
1360 | ||
22af0e58 LP |
1361 | case MOUNT_REMOUNTING_SIGTERM: |
1362 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1363 | |
4819ff03 | 1364 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1365 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1366 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1367 | } else { |
22af0e58 LP |
1368 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1369 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1370 | } |
e537352b LP |
1371 | break; |
1372 | ||
22af0e58 LP |
1373 | case MOUNT_REMOUNTING_SIGKILL: |
1374 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1375 | |
22af0e58 LP |
1376 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1377 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1378 | break; | |
1379 | ||
1380 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1381 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1382 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1383 | break; |
1384 | ||
1385 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1386 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1387 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1388 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1389 | } else { |
22af0e58 LP |
1390 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1391 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1392 | } |
e537352b LP |
1393 | break; |
1394 | ||
e537352b | 1395 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1396 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1397 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1398 | break; |
1399 | ||
1400 | default: | |
1401 | assert_not_reached("Timeout at wrong time."); | |
1402 | } | |
718db961 LP |
1403 | |
1404 | return 0; | |
e537352b LP |
1405 | } |
1406 | ||
03b8cfed FB |
1407 | typedef struct { |
1408 | bool is_mounted; | |
1409 | bool just_mounted; | |
1410 | bool just_changed; | |
1411 | } MountSetupFlags; | |
1412 | ||
1413 | static int mount_setup_new_unit( | |
1414 | Unit *u, | |
1415 | const char *what, | |
1416 | const char *where, | |
1417 | const char *options, | |
1418 | const char *fstype, | |
1419 | MountSetupFlags *flags) { | |
1420 | ||
1421 | MountParameters *p; | |
1422 | ||
1423 | assert(u); | |
1424 | assert(flags); | |
1425 | ||
1426 | u->source_path = strdup("/proc/self/mountinfo"); | |
1427 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1428 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1429 | return -ENOMEM; |
1430 | ||
1431 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1432 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1433 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1434 | ||
1435 | p->what = strdup(what); | |
1436 | p->options = strdup(options); | |
1437 | p->fstype = strdup(fstype); | |
1438 | if (!p->what || !p->options || !p->fstype) | |
1439 | return -ENOMEM; | |
1440 | ||
1441 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1442 | const char *target; | |
1443 | int r; | |
1444 | ||
1445 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
eef85c4a | 1446 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1447 | if (r < 0) |
1448 | return r; | |
1449 | ||
eef85c4a | 1450 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1451 | if (r < 0) |
1452 | return r; | |
1453 | } | |
1454 | ||
cfcd4318 | 1455 | unit_add_to_load_queue(u); |
03b8cfed FB |
1456 | flags->is_mounted = true; |
1457 | flags->just_mounted = true; | |
1458 | flags->just_changed = true; | |
1459 | ||
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | static int mount_setup_existing_unit( | |
1464 | Unit *u, | |
1465 | const char *what, | |
1466 | const char *where, | |
1467 | const char *options, | |
1468 | const char *fstype, | |
1469 | MountSetupFlags *flags) { | |
1470 | ||
1471 | MountParameters *p; | |
1472 | bool load_extras = false; | |
1473 | int r1, r2, r3; | |
1474 | ||
1475 | assert(u); | |
1476 | assert(flags); | |
1477 | ||
1478 | if (!MOUNT(u)->where) { | |
1479 | MOUNT(u)->where = strdup(where); | |
1480 | if (!MOUNT(u)->where) | |
1481 | return -ENOMEM; | |
1482 | } | |
1483 | ||
1484 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1485 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1486 | ||
1487 | r1 = free_and_strdup(&p->what, what); | |
1488 | r2 = free_and_strdup(&p->options, options); | |
1489 | r3 = free_and_strdup(&p->fstype, fstype); | |
1490 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1491 | return -ENOMEM; | |
1492 | ||
1493 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1494 | flags->is_mounted = true; | |
1495 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
1496 | ||
1497 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1498 | ||
1499 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1500 | /* _netdev option may have shown up late, or on a | |
1501 | * remount. Add remote-fs dependencies, even though | |
1502 | * local-fs ones may already be there. | |
1503 | * | |
1504 | * Note: due to a current limitation (we don't track | |
1505 | * in the dependency "Set*" objects who created a | |
1506 | * dependency), we can only add deps, never lose them, | |
1507 | * until the next full daemon-reload. */ | |
eef85c4a | 1508 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1509 | load_extras = true; |
1510 | } | |
1511 | ||
1512 | if (u->load_state == UNIT_NOT_FOUND) { | |
1513 | u->load_state = UNIT_LOADED; | |
1514 | u->load_error = 0; | |
1515 | ||
1516 | /* Load in the extras later on, after we | |
1517 | * finished initialization of the unit */ | |
1518 | ||
1519 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1520 | load_extras = true; | |
1521 | flags->just_changed = true; | |
1522 | } | |
1523 | ||
1524 | if (load_extras) | |
1525 | return mount_add_extras(MOUNT(u)); | |
1526 | ||
1527 | return 0; | |
1528 | } | |
1529 | ||
628c89cc | 1530 | static int mount_setup_unit( |
e537352b LP |
1531 | Manager *m, |
1532 | const char *what, | |
1533 | const char *where, | |
1534 | const char *options, | |
1535 | const char *fstype, | |
e537352b | 1536 | bool set_flags) { |
057d9ab8 | 1537 | |
03b8cfed FB |
1538 | _cleanup_free_ char *e = NULL; |
1539 | MountSetupFlags flags; | |
057d9ab8 LP |
1540 | Unit *u; |
1541 | int r; | |
b08d03ff | 1542 | |
f50e0a01 | 1543 | assert(m); |
b08d03ff LP |
1544 | assert(what); |
1545 | assert(where); | |
e537352b LP |
1546 | assert(options); |
1547 | assert(fstype); | |
1548 | ||
e537352b LP |
1549 | /* Ignore API mount points. They should never be referenced in |
1550 | * dependencies ever. */ | |
33ff02c9 | 1551 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1552 | return 0; |
b08d03ff | 1553 | |
8d567588 LP |
1554 | if (streq(fstype, "autofs")) |
1555 | return 0; | |
1556 | ||
4e85aff4 LP |
1557 | /* probably some kind of swap, ignore */ |
1558 | if (!is_path(where)) | |
b08d03ff LP |
1559 | return 0; |
1560 | ||
7410616c LP |
1561 | r = unit_name_from_path(where, ".mount", &e); |
1562 | if (r < 0) | |
1563 | return r; | |
b08d03ff | 1564 | |
7d17cfbc MS |
1565 | u = manager_get_unit(m, e); |
1566 | if (!u) { | |
03b8cfed FB |
1567 | /* First time we see this mount point meaning that it's |
1568 | * not been initiated by a mount unit but rather by the | |
1569 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1570 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1571 | if (r < 0) |
1572 | goto fail; | |
1573 | ||
03b8cfed FB |
1574 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1575 | if (r < 0) | |
1576 | unit_free(u); | |
1577 | } else | |
1578 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1579 | |
03b8cfed | 1580 | if (r < 0) |
e537352b | 1581 | goto fail; |
ff5f34d0 | 1582 | |
6b1dc2bd | 1583 | if (set_flags) { |
03b8cfed FB |
1584 | MOUNT(u)->is_mounted = flags.is_mounted; |
1585 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1586 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1587 | } |
1588 | ||
03b8cfed | 1589 | if (flags.just_changed) |
ff5f34d0 | 1590 | unit_add_to_dbus_queue(u); |
c1e1601e | 1591 | |
b08d03ff | 1592 | return 0; |
b08d03ff | 1593 | fail: |
628c89cc | 1594 | log_warning_errno(r, "Failed to set up mount unit: %m"); |
4e85aff4 | 1595 | return r; |
b08d03ff LP |
1596 | } |
1597 | ||
ef734fd6 | 1598 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1599 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1600 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1601 | int r = 0; |
b08d03ff LP |
1602 | |
1603 | assert(m); | |
1604 | ||
628c89cc LP |
1605 | t = mnt_new_table(); |
1606 | if (!t) | |
8d3ae2bd | 1607 | return log_oom(); |
b08d03ff | 1608 | |
628c89cc LP |
1609 | i = mnt_new_iter(MNT_ITER_FORWARD); |
1610 | if (!i) | |
1611 | return log_oom(); | |
1612 | ||
1613 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1614 | if (r < 0) |
628c89cc | 1615 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1616 | |
5cca8def ZJS |
1617 | r = 0; |
1618 | for (;;) { | |
8d3ae2bd | 1619 | const char *device, *path, *options, *fstype; |
527b7a42 | 1620 | _cleanup_free_ char *d = NULL, *p = NULL; |
628c89cc | 1621 | struct libmnt_fs *fs; |
8d3ae2bd | 1622 | int k; |
b08d03ff | 1623 | |
628c89cc | 1624 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1625 | if (k == 1) |
1626 | break; | |
628c89cc LP |
1627 | if (k < 0) |
1628 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1629 | |
8d3ae2bd CL |
1630 | device = mnt_fs_get_source(fs); |
1631 | path = mnt_fs_get_target(fs); | |
1632 | options = mnt_fs_get_options(fs); | |
1633 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1634 | |
c0a7f8d3 DM |
1635 | if (!device || !path) |
1636 | continue; | |
1637 | ||
527b7a42 | 1638 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1639 | return log_oom(); |
1640 | ||
527b7a42 | 1641 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1642 | return log_oom(); |
b08d03ff | 1643 | |
628c89cc LP |
1644 | (void) device_found_node(m, d, true, DEVICE_FOUND_MOUNT, set_flags); |
1645 | ||
1646 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1647 | if (r == 0 && k < 0) |
60b912f6 | 1648 | r = k; |
b08d03ff LP |
1649 | } |
1650 | ||
e537352b LP |
1651 | return r; |
1652 | } | |
1653 | ||
1654 | static void mount_shutdown(Manager *m) { | |
1655 | assert(m); | |
1656 | ||
718db961 LP |
1657 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1658 | ||
d379d442 KZ |
1659 | mnt_unref_monitor(m->mount_monitor); |
1660 | m->mount_monitor = NULL; | |
b08d03ff LP |
1661 | } |
1662 | ||
7a7821c8 | 1663 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1664 | Mount *m = MOUNT(u); |
7a7821c8 | 1665 | usec_t t; |
68db7a3b ZJS |
1666 | int r; |
1667 | ||
1668 | if (!m->timer_event_source) | |
1669 | return 0; | |
1670 | ||
7a7821c8 | 1671 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1672 | if (r < 0) |
1673 | return r; | |
7a7821c8 LP |
1674 | if (t == USEC_INFINITY) |
1675 | return 0; | |
68db7a3b | 1676 | |
7a7821c8 | 1677 | *timeout = t; |
68db7a3b ZJS |
1678 | return 1; |
1679 | } | |
1680 | ||
1201cae7 | 1681 | static int synthesize_root_mount(Manager *m) { |
11222d0f LP |
1682 | Unit *u; |
1683 | int r; | |
1684 | ||
1685 | assert(m); | |
1686 | ||
1687 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1688 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1689 | ||
1690 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1691 | if (!u) { | |
a581e45a | 1692 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
1201cae7 LP |
1693 | if (r < 0) |
1694 | return log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
11222d0f LP |
1695 | } |
1696 | ||
1697 | u->perpetual = true; | |
1698 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1699 | ||
1700 | unit_add_to_load_queue(u); | |
1701 | unit_add_to_dbus_queue(u); | |
1201cae7 LP |
1702 | |
1703 | return 0; | |
11222d0f LP |
1704 | } |
1705 | ||
1706 | static bool mount_is_mounted(Mount *m) { | |
1707 | assert(m); | |
1708 | ||
1709 | return UNIT(m)->perpetual || m->is_mounted; | |
1710 | } | |
1711 | ||
ba64af90 | 1712 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1713 | int r; |
d379d442 | 1714 | |
b08d03ff LP |
1715 | assert(m); |
1716 | ||
1201cae7 LP |
1717 | r = synthesize_root_mount(m); |
1718 | if (r < 0) | |
1719 | goto fail; | |
11222d0f | 1720 | |
8d3ae2bd CL |
1721 | mnt_init_debug(0); |
1722 | ||
d379d442 KZ |
1723 | if (!m->mount_monitor) { |
1724 | int fd; | |
ef734fd6 | 1725 | |
d379d442 KZ |
1726 | m->mount_monitor = mnt_new_monitor(); |
1727 | if (!m->mount_monitor) { | |
ba64af90 | 1728 | log_oom(); |
718db961 | 1729 | goto fail; |
d379d442 | 1730 | } |
29083707 | 1731 | |
d379d442 | 1732 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1733 | if (r < 0) { |
1734 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1735 | goto fail; |
ba64af90 LP |
1736 | } |
1737 | ||
d379d442 | 1738 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1739 | if (r < 0) { |
1740 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1741 | goto fail; |
ba64af90 | 1742 | } |
90598531 | 1743 | |
d379d442 KZ |
1744 | /* mnt_unref_monitor() will close the fd */ |
1745 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1746 | if (r < 0) { |
1747 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1748 | goto fail; |
ba64af90 | 1749 | } |
befb6d54 | 1750 | |
d379d442 | 1751 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1752 | if (r < 0) { |
1753 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1754 | goto fail; |
ba64af90 | 1755 | } |
befb6d54 | 1756 | |
d379d442 | 1757 | r = sd_event_source_set_priority(m->mount_event_source, -10); |
ba64af90 LP |
1758 | if (r < 0) { |
1759 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1760 | goto fail; |
ba64af90 | 1761 | } |
7dfbe2e3 | 1762 | |
d379d442 | 1763 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1764 | } |
1765 | ||
e62d8c39 ZJS |
1766 | r = mount_load_proc_self_mountinfo(m, false); |
1767 | if (r < 0) | |
b08d03ff LP |
1768 | goto fail; |
1769 | ||
ba64af90 | 1770 | return; |
b08d03ff LP |
1771 | |
1772 | fail: | |
1773 | mount_shutdown(m); | |
5cb5a6ff LP |
1774 | } |
1775 | ||
718db961 | 1776 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1777 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1778 | Manager *m = userdata; |
fcd8b266 LP |
1779 | const char *what; |
1780 | Iterator i; | |
595ed347 | 1781 | Unit *u; |
ef734fd6 LP |
1782 | int r; |
1783 | ||
1784 | assert(m); | |
d379d442 | 1785 | assert(revents & EPOLLIN); |
ef734fd6 | 1786 | |
d379d442 | 1787 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1788 | bool rescan = false; |
befb6d54 | 1789 | |
d379d442 KZ |
1790 | /* Drain all events and verify that the event is valid. |
1791 | * | |
1792 | * Note that libmount also monitors /run/mount mkdir if the | |
1793 | * directory does not exist yet. The mkdir may generate event | |
1794 | * which is irrelevant for us. | |
1795 | * | |
1796 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1797 | do { | |
1798 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1799 | if (r == 0) | |
1800 | rescan = true; | |
1801 | else if (r < 0) | |
1802 | return log_error_errno(r, "Failed to drain libmount events"); | |
1803 | } while (r == 0); | |
1804 | ||
1805 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1806 | if (!rescan) |
1807 | return 0; | |
1808 | } | |
ef734fd6 | 1809 | |
4f0eedb7 ZJS |
1810 | r = mount_load_proc_self_mountinfo(m, true); |
1811 | if (r < 0) { | |
e537352b | 1812 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1813 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1814 | Mount *mount = MOUNT(u); | |
e537352b LP |
1815 | |
1816 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1817 | } | |
1818 | ||
718db961 | 1819 | return 0; |
ef734fd6 LP |
1820 | } |
1821 | ||
1822 | manager_dispatch_load_queue(m); | |
1823 | ||
595ed347 MS |
1824 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1825 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1826 | |
11222d0f | 1827 | if (!mount_is_mounted(mount)) { |
e537352b | 1828 | |
394763f6 LP |
1829 | /* A mount point is not around right now. It |
1830 | * might be gone, or might never have | |
1831 | * existed. */ | |
1832 | ||
1833 | if (mount->from_proc_self_mountinfo && | |
1834 | mount->parameters_proc_self_mountinfo.what) { | |
1835 | ||
1836 | /* Remember that this device might just have disappeared */ | |
1837 | if (set_ensure_allocated(&gone, &string_hash_ops) < 0 || | |
1838 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) | |
1839 | log_oom(); /* we don't care too much about OOM here... */ | |
1840 | } | |
fcd8b266 | 1841 | |
ef734fd6 | 1842 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1843 | |
1844 | switch (mount->state) { | |
1845 | ||
1846 | case MOUNT_MOUNTED: | |
aef83136 LP |
1847 | /* This has just been unmounted by |
1848 | * somebody else, follow the state | |
1849 | * change. */ | |
cf6f7f66 | 1850 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1851 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1852 | break; |
1853 | ||
1854 | default: | |
e537352b | 1855 | break; |
e537352b LP |
1856 | } |
1857 | ||
1858 | } else if (mount->just_mounted || mount->just_changed) { | |
1859 | ||
fcd8b266 | 1860 | /* A mount point was added or changed */ |
e537352b LP |
1861 | |
1862 | switch (mount->state) { | |
1863 | ||
1864 | case MOUNT_DEAD: | |
fdf20a31 | 1865 | case MOUNT_FAILED: |
4b58153d LP |
1866 | |
1867 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1868 | * generate a new invocation ID for this implicitly and automatically. */ | |
1869 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1870 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1871 | break; |
1872 | ||
1873 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1874 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1875 | break; |
1876 | ||
1877 | default: | |
1878 | /* Nothing really changed, but let's | |
1879 | * issue an notification call | |
1880 | * nonetheless, in case somebody is | |
1881 | * waiting for this. (e.g. file system | |
1882 | * ro/rw remounts.) */ | |
1883 | mount_set_state(mount, mount->state); | |
1884 | break; | |
1885 | } | |
394763f6 | 1886 | } |
fcd8b266 | 1887 | |
11222d0f | 1888 | if (mount_is_mounted(mount) && |
394763f6 LP |
1889 | mount->from_proc_self_mountinfo && |
1890 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1891 | |
394763f6 LP |
1892 | if (set_ensure_allocated(&around, &string_hash_ops) < 0 || |
1893 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) | |
1894 | log_oom(); | |
e537352b LP |
1895 | } |
1896 | ||
1897 | /* Reset the flags for later calls */ | |
1898 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1899 | } | |
718db961 | 1900 | |
fcd8b266 LP |
1901 | SET_FOREACH(what, gone, i) { |
1902 | if (set_contains(around, what)) | |
1903 | continue; | |
1904 | ||
1905 | /* Let the device units know that the device is no longer mounted */ | |
1906 | (void) device_found_node(m, what, false, DEVICE_FOUND_MOUNT, true); | |
1907 | } | |
1908 | ||
718db961 | 1909 | return 0; |
e537352b LP |
1910 | } |
1911 | ||
fdf20a31 | 1912 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1913 | Mount *m = MOUNT(u); |
1914 | ||
1915 | assert(m); | |
1916 | ||
fdf20a31 | 1917 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1918 | mount_set_state(m, MOUNT_DEAD); |
1919 | ||
9d2f5178 LP |
1920 | m->result = MOUNT_SUCCESS; |
1921 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1922 | } |
1923 | ||
718db961 | 1924 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1925 | Mount *m = MOUNT(u); |
1926 | ||
1927 | assert(m); | |
1928 | ||
814cc562 | 1929 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1930 | } |
1931 | ||
291d565a LP |
1932 | static int mount_control_pid(Unit *u) { |
1933 | Mount *m = MOUNT(u); | |
1934 | ||
1935 | assert(m); | |
1936 | ||
1937 | return m->control_pid; | |
1938 | } | |
1939 | ||
a16e1123 LP |
1940 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1941 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1942 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1943 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1944 | }; | |
1945 | ||
1946 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1947 | ||
9d2f5178 LP |
1948 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1949 | [MOUNT_SUCCESS] = "success", | |
1950 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1951 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1952 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1953 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1954 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1955 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
9d2f5178 LP |
1956 | }; |
1957 | ||
1958 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1959 | ||
87f0e418 | 1960 | const UnitVTable mount_vtable = { |
7d17cfbc | 1961 | .object_size = sizeof(Mount), |
718db961 LP |
1962 | .exec_context_offset = offsetof(Mount, exec_context), |
1963 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1964 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1965 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1966 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1967 | |
f975e971 LP |
1968 | .sections = |
1969 | "Unit\0" | |
1970 | "Mount\0" | |
1971 | "Install\0", | |
4ad49000 | 1972 | .private_section = "Mount", |
71645aca | 1973 | |
e537352b LP |
1974 | .init = mount_init, |
1975 | .load = mount_load, | |
034c6ed7 | 1976 | .done = mount_done, |
e537352b | 1977 | |
f50e0a01 LP |
1978 | .coldplug = mount_coldplug, |
1979 | ||
034c6ed7 | 1980 | .dump = mount_dump, |
5cb5a6ff | 1981 | |
e537352b LP |
1982 | .start = mount_start, |
1983 | .stop = mount_stop, | |
1984 | .reload = mount_reload, | |
1985 | ||
8a0867d6 LP |
1986 | .kill = mount_kill, |
1987 | ||
a16e1123 LP |
1988 | .serialize = mount_serialize, |
1989 | .deserialize_item = mount_deserialize_item, | |
1990 | ||
f50e0a01 | 1991 | .active_state = mount_active_state, |
10a94420 | 1992 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1993 | |
701cc384 LP |
1994 | .check_gc = mount_check_gc, |
1995 | ||
e537352b | 1996 | .sigchld_event = mount_sigchld_event, |
e537352b | 1997 | |
fdf20a31 | 1998 | .reset_failed = mount_reset_failed, |
291d565a LP |
1999 | |
2000 | .control_pid = mount_control_pid, | |
5632e374 | 2001 | |
718db961 | 2002 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
2003 | .bus_set_property = bus_mount_set_property, |
2004 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2005 | |
68db7a3b ZJS |
2006 | .get_timeout = mount_get_timeout, |
2007 | ||
0e252f6b TG |
2008 | .can_transient = true, |
2009 | ||
f50e0a01 | 2010 | .enumerate = mount_enumerate, |
c6918296 MS |
2011 | .shutdown = mount_shutdown, |
2012 | ||
2013 | .status_message_formats = { | |
2014 | .starting_stopping = { | |
2015 | [0] = "Mounting %s...", | |
2016 | [1] = "Unmounting %s...", | |
2017 | }, | |
2018 | .finished_start_job = { | |
2019 | [JOB_DONE] = "Mounted %s.", | |
2020 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2021 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2022 | }, | |
2023 | .finished_stop_job = { | |
2024 | [JOB_DONE] = "Unmounted %s.", | |
2025 | [JOB_FAILED] = "Failed unmounting %s.", | |
2026 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2027 | }, | |
2028 | }, | |
5cb5a6ff | 2029 | }; |