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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, |
e537352b LP |
61 | [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
62 | [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
032ff4af LP |
63 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
64 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
65 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
66 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 67 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 68 | }; |
5cb5a6ff | 69 | |
718db961 LP |
70 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
71 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
72 | ||
affc3d83 | 73 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 74 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
75 | return true; |
76 | ||
affc3d83 | 77 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
78 | return true; |
79 | ||
80 | return false; | |
81 | } | |
82 | ||
e6a7b9f4 | 83 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
84 | assert(p); |
85 | ||
86 | return mount_needs_network(p->options, p->fstype); | |
87 | } | |
88 | ||
d3bd0986 MK |
89 | static bool mount_is_loop(const MountParameters *p) { |
90 | assert(p); | |
91 | ||
92 | if (fstab_test_option(p->options, "loop\0")) | |
93 | return true; | |
94 | ||
95 | return false; | |
96 | } | |
97 | ||
e6a7b9f4 | 98 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
99 | assert(p); |
100 | ||
d15d0333 | 101 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
102 | return true; |
103 | ||
d15d0333 | 104 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
105 | return true; |
106 | ||
107 | return false; | |
108 | } | |
109 | ||
e6a7b9f4 | 110 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
111 | assert(p); |
112 | ||
d15d0333 | 113 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
114 | } |
115 | ||
2b14df4a FB |
116 | static bool mount_is_automount(const MountParameters *p) { |
117 | assert(p); | |
118 | ||
119 | return fstab_test_option(p->options, | |
120 | "comment=systemd.automount\0" | |
121 | "x-systemd.automount\0"); | |
122 | } | |
123 | ||
94ad3616 ZJS |
124 | static bool mount_state_active(MountState state) { |
125 | return IN_SET(state, | |
126 | MOUNT_MOUNTING, | |
127 | MOUNT_MOUNTING_DONE, | |
128 | MOUNT_REMOUNTING, | |
129 | MOUNT_UNMOUNTING, | |
130 | MOUNT_MOUNTING_SIGTERM, | |
131 | MOUNT_MOUNTING_SIGKILL, | |
132 | MOUNT_UNMOUNTING_SIGTERM, | |
133 | MOUNT_UNMOUNTING_SIGKILL, | |
134 | MOUNT_REMOUNTING_SIGTERM, | |
135 | MOUNT_REMOUNTING_SIGKILL); | |
136 | } | |
137 | ||
ebc8968b FB |
138 | static bool mount_is_bound_to_device(const Mount *m) { |
139 | const MountParameters *p; | |
140 | ||
141 | if (m->from_fragment) | |
142 | return true; | |
143 | ||
144 | p = &m->parameters_proc_self_mountinfo; | |
145 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
146 | } | |
147 | ||
e6a7b9f4 | 148 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
149 | assert(p); |
150 | ||
11041c84 | 151 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 152 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 153 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
154 | return false; |
155 | ||
156 | if (mount_is_bind(p)) | |
157 | return false; | |
158 | ||
d15d0333 ZJS |
159 | return fstab_test_option(p->options, |
160 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
161 | } |
162 | ||
a16e1123 LP |
163 | static void mount_init(Unit *u) { |
164 | Mount *m = MOUNT(u); | |
5cb5a6ff | 165 | |
a16e1123 | 166 | assert(u); |
ac155bb8 | 167 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 168 | |
1f19a534 | 169 | m->timeout_usec = u->manager->default_timeout_start_usec; |
3e5235b0 LP |
170 | m->directory_mode = 0755; |
171 | ||
f00929ad DJL |
172 | /* We need to make sure that /usr/bin/mount is always called |
173 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
174 | * side doesn't send us another mount request while we are |
175 | * already trying to comply its last one. */ | |
74922904 | 176 | m->exec_context.same_pgrp = true; |
8d567588 | 177 | |
a16e1123 | 178 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 179 | |
5bcb0f2b | 180 | u->ignore_on_isolate = true; |
8d567588 LP |
181 | } |
182 | ||
36c16a7c | 183 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
184 | int r; |
185 | ||
186 | assert(m); | |
187 | ||
718db961 | 188 | if (m->timer_event_source) { |
36c16a7c | 189 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
190 | if (r < 0) |
191 | return r; | |
192 | ||
193 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
194 | } | |
195 | ||
36c16a7c LP |
196 | if (usec == USEC_INFINITY) |
197 | return 0; | |
198 | ||
7dfbe2e3 | 199 | r = sd_event_add_time( |
6a0f1f6d LP |
200 | UNIT(m)->manager->event, |
201 | &m->timer_event_source, | |
202 | CLOCK_MONOTONIC, | |
36c16a7c | 203 | usec, 0, |
6a0f1f6d | 204 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
205 | if (r < 0) |
206 | return r; | |
207 | ||
208 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
209 | ||
210 | return 0; | |
718db961 LP |
211 | } |
212 | ||
a16e1123 | 213 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
214 | assert(m); |
215 | ||
216 | if (m->control_pid <= 0) | |
217 | return; | |
218 | ||
219 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
220 | m->control_pid = 0; | |
221 | } | |
222 | ||
e537352b LP |
223 | static void mount_parameters_done(MountParameters *p) { |
224 | assert(p); | |
225 | ||
226 | free(p->what); | |
227 | free(p->options); | |
228 | free(p->fstype); | |
229 | ||
230 | p->what = p->options = p->fstype = NULL; | |
231 | } | |
232 | ||
87f0e418 | 233 | static void mount_done(Unit *u) { |
ef734fd6 | 234 | Mount *m = MOUNT(u); |
034c6ed7 | 235 | |
ef734fd6 | 236 | assert(m); |
034c6ed7 | 237 | |
a1e58e8e | 238 | m->where = mfree(m->where); |
f50e0a01 | 239 | |
e537352b LP |
240 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
241 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 242 | |
613b411c | 243 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); |
e537352b LP |
244 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
245 | m->control_command = NULL; | |
f50e0a01 | 246 | |
29206d46 LP |
247 | dynamic_creds_unref(&m->dynamic_creds); |
248 | ||
a16e1123 | 249 | mount_unwatch_control_pid(m); |
f50e0a01 | 250 | |
718db961 | 251 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
252 | } |
253 | ||
44a6b1b6 | 254 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
255 | assert(m); |
256 | ||
257 | if (m->from_fragment) | |
258 | return &m->parameters_fragment; | |
cb39ed3f LP |
259 | |
260 | return NULL; | |
261 | } | |
262 | ||
44a6b1b6 | 263 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
264 | assert(m); |
265 | ||
266 | if (m->from_proc_self_mountinfo) | |
267 | return &m->parameters_proc_self_mountinfo; | |
268 | ||
6b1dc2bd | 269 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
270 | } |
271 | ||
6e2ef85b | 272 | static int mount_add_mount_links(Mount *m) { |
a57f7e2c | 273 | _cleanup_free_ char *parent = NULL; |
5c78d8e2 | 274 | MountParameters *pm; |
ac155bb8 | 275 | Unit *other; |
a57f7e2c LP |
276 | Iterator i; |
277 | Set *s; | |
b08d03ff LP |
278 | int r; |
279 | ||
6e2ef85b | 280 | assert(m); |
b08d03ff | 281 | |
a57f7e2c LP |
282 | if (!path_equal(m->where, "/")) { |
283 | /* Adds in links to other mount points that might lie further | |
284 | * up in the hierarchy */ | |
5f311f8c LP |
285 | |
286 | parent = dirname_malloc(m->where); | |
287 | if (!parent) | |
288 | return -ENOMEM; | |
01f78473 | 289 | |
a57f7e2c | 290 | r = unit_require_mounts_for(UNIT(m), parent); |
4f0eedb7 | 291 | if (r < 0) |
01f78473 | 292 | return r; |
4f0eedb7 | 293 | } |
01f78473 | 294 | |
a57f7e2c | 295 | /* Adds in links to other mount points that might be needed |
d3bd0986 | 296 | * for the source path (if this is a bind mount or a loop mount) to be |
a57f7e2c LP |
297 | * available. */ |
298 | pm = get_mount_parameters_fragment(m); | |
fc676b00 ZJS |
299 | if (pm && pm->what && |
300 | path_is_absolute(pm->what) && | |
d3bd0986 | 301 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 302 | |
a57f7e2c | 303 | r = unit_require_mounts_for(UNIT(m), pm->what); |
4f0eedb7 | 304 | if (r < 0) |
6e2ef85b | 305 | return r; |
4f0eedb7 | 306 | } |
b08d03ff | 307 | |
a57f7e2c LP |
308 | /* Adds in links to other units that use this path or paths |
309 | * further down in the hierarchy */ | |
310 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); | |
311 | SET_FOREACH(other, s, i) { | |
b08d03ff | 312 | |
a57f7e2c LP |
313 | if (other->load_state != UNIT_LOADED) |
314 | continue; | |
b08d03ff | 315 | |
a57f7e2c LP |
316 | if (other == UNIT(m)) |
317 | continue; | |
b08d03ff | 318 | |
a57f7e2c | 319 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true); |
4f0eedb7 | 320 | if (r < 0) |
6e2ef85b | 321 | return r; |
b08d03ff | 322 | |
a57f7e2c LP |
323 | if (UNIT(m)->fragment_path) { |
324 | /* If we have fragment configuration, then make this dependency required */ | |
325 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true); | |
326 | if (r < 0) | |
327 | return r; | |
328 | } | |
7c8fa05c LP |
329 | } |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
173a8d04 LP |
334 | static int mount_add_device_links(Mount *m) { |
335 | MountParameters *p; | |
5073f89f | 336 | bool device_wants_mount = false; |
ebc8968b | 337 | UnitDependency dep; |
9fff8a1f | 338 | int r; |
173a8d04 LP |
339 | |
340 | assert(m); | |
341 | ||
06e97888 | 342 | p = get_mount_parameters(m); |
6b1dc2bd | 343 | if (!p) |
173a8d04 LP |
344 | return 0; |
345 | ||
9fff8a1f | 346 | if (!p->what) |
173a8d04 | 347 | return 0; |
5c78d8e2 | 348 | |
dd144c63 LP |
349 | if (mount_is_bind(p)) |
350 | return 0; | |
351 | ||
352 | if (!is_device_path(p->what)) | |
353 | return 0; | |
354 | ||
7ba2711d LP |
355 | /* /dev/root is a really weird thing, it's not a real device, |
356 | * but just a path the kernel exports for the root file system | |
357 | * specified on the kernel command line. Ignore it here. */ | |
358 | if (path_equal(p->what, "/dev/root")) | |
359 | return 0; | |
360 | ||
dd144c63 LP |
361 | if (path_equal(m->where, "/")) |
362 | return 0; | |
363 | ||
463d0d15 | 364 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
365 | device_wants_mount = true; |
366 | ||
ebc8968b FB |
367 | /* Mount units from /proc/self/mountinfo are not bound to devices |
368 | * by default since they're subject to races when devices are | |
369 | * unplugged. But the user can still force this dep with an | |
370 | * appropriate option (or udev property) so the mount units are | |
371 | * automatically stopped when the device disappears suddenly. */ | |
372 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
373 | ||
374 | r = unit_add_node_link(UNIT(m), p->what, device_wants_mount, dep); | |
dd144c63 LP |
375 | if (r < 0) |
376 | return r; | |
9fff8a1f | 377 | |
9fff8a1f | 378 | return 0; |
173a8d04 LP |
379 | } |
380 | ||
6b1dc2bd LP |
381 | static int mount_add_quota_links(Mount *m) { |
382 | int r; | |
383 | MountParameters *p; | |
384 | ||
385 | assert(m); | |
386 | ||
463d0d15 | 387 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
388 | return 0; |
389 | ||
390 | p = get_mount_parameters_fragment(m); | |
391 | if (!p) | |
392 | return 0; | |
393 | ||
394 | if (!needs_quota(p)) | |
395 | return 0; | |
396 | ||
397 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true); | |
398 | if (r < 0) | |
399 | return r; | |
400 | ||
401 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true); | |
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) { |
9ddc4a26 | 440 | MountParameters *p; |
ea0ec5ce | 441 | const char *after; |
0c17fbce | 442 | int r; |
2edd4434 LP |
443 | |
444 | assert(m); | |
445 | ||
4c9ea260 LP |
446 | if (!UNIT(m)->default_dependencies) |
447 | return 0; | |
448 | ||
ad2706db LP |
449 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
450 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
451 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
452 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 453 | return 0; |
2edd4434 | 454 | |
874d3404 LP |
455 | p = get_mount_parameters(m); |
456 | if (!p) | |
6b1dc2bd LP |
457 | return 0; |
458 | ||
e8d2f6cd | 459 | if (mount_is_network(p)) { |
ea0ec5ce LP |
460 | /* We order ourselves after network.target. This is |
461 | * primarily useful at shutdown: services that take | |
462 | * down the network should order themselves before | |
463 | * network.target, so that they are shut down only | |
464 | * after this mount unit is stopped. */ | |
6b1dc2bd | 465 | |
ea0ec5ce | 466 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, NULL, true); |
a63a5c46 LP |
467 | if (r < 0) |
468 | return r; | |
a63a5c46 | 469 | |
ea0ec5ce LP |
470 | /* We pull in network-online.target, and order |
471 | * ourselves after it. This is useful at start-up to | |
472 | * actively pull in tools that want to be started | |
473 | * before we start mounting network file systems, and | |
474 | * whose purpose it is to delay this until the network | |
475 | * is "up". */ | |
476 | ||
477 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, NULL, true); | |
e8d2f6cd LP |
478 | if (r < 0) |
479 | return r; | |
ea0ec5ce LP |
480 | |
481 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
482 | } else | |
483 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
484 | ||
485 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true); | |
486 | if (r < 0) | |
487 | return r; | |
e8d2f6cd | 488 | |
ad2706db LP |
489 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
490 | if (r < 0) | |
491 | return r; | |
2edd4434 LP |
492 | |
493 | return 0; | |
494 | } | |
495 | ||
8d567588 | 496 | static int mount_verify(Mount *m) { |
a57f7e2c | 497 | _cleanup_free_ char *e = NULL; |
b294b79f | 498 | MountParameters *p; |
7410616c | 499 | int r; |
a57f7e2c | 500 | |
8d567588 LP |
501 | assert(m); |
502 | ||
1124fe6f | 503 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
504 | return 0; |
505 | ||
6b1dc2bd | 506 | if (!m->from_fragment && !m->from_proc_self_mountinfo) |
8cbef760 LP |
507 | return -ENOENT; |
508 | ||
7410616c LP |
509 | r = unit_name_from_path(m->where, ".mount", &e); |
510 | if (r < 0) | |
f2341e0a | 511 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 512 | |
7410616c | 513 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 514 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
515 | return -EINVAL; |
516 | } | |
517 | ||
33ff02c9 | 518 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 519 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
33ff02c9 LP |
520 | return -EINVAL; |
521 | } | |
522 | ||
b294b79f MO |
523 | p = get_mount_parameters_fragment(m); |
524 | if (p && !p->what) { | |
f2341e0a | 525 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
4e85aff4 LP |
526 | return -EBADMSG; |
527 | } | |
528 | ||
4819ff03 | 529 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 530 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
4d0e5dbd LP |
531 | return -EINVAL; |
532 | } | |
533 | ||
8d567588 LP |
534 | return 0; |
535 | } | |
536 | ||
1a4ac875 MS |
537 | static int mount_add_extras(Mount *m) { |
538 | Unit *u = UNIT(m); | |
e537352b LP |
539 | int r; |
540 | ||
e821075a LP |
541 | assert(m); |
542 | ||
543 | if (u->fragment_path) | |
1a4ac875 | 544 | m->from_fragment = true; |
e537352b | 545 | |
1a4ac875 | 546 | if (!m->where) { |
7410616c LP |
547 | r = unit_name_to_path(u->id, &m->where); |
548 | if (r < 0) | |
549 | return r; | |
1a4ac875 | 550 | } |
a16e1123 | 551 | |
1a4ac875 | 552 | path_kill_slashes(m->where); |
e537352b | 553 | |
e821075a | 554 | if (!u->description) { |
1a4ac875 MS |
555 | r = unit_set_description(u, m->where); |
556 | if (r < 0) | |
173a8d04 | 557 | return r; |
1a4ac875 | 558 | } |
6e2ef85b | 559 | |
1a4ac875 MS |
560 | r = mount_add_device_links(m); |
561 | if (r < 0) | |
562 | return r; | |
6e2ef85b | 563 | |
1a4ac875 MS |
564 | r = mount_add_mount_links(m); |
565 | if (r < 0) | |
566 | return r; | |
6e2ef85b | 567 | |
1a4ac875 MS |
568 | r = mount_add_quota_links(m); |
569 | if (r < 0) | |
570 | return r; | |
e537352b | 571 | |
598459ce LP |
572 | r = unit_patch_contexts(u); |
573 | if (r < 0) | |
574 | return r; | |
4e67ddd6 | 575 | |
598459ce | 576 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
577 | if (r < 0) |
578 | return r; | |
579 | ||
d79200e2 | 580 | r = unit_set_default_slice(u); |
1a4ac875 MS |
581 | if (r < 0) |
582 | return r; | |
583 | ||
4c9ea260 LP |
584 | r = mount_add_default_dependencies(m); |
585 | if (r < 0) | |
586 | return r; | |
598459ce | 587 | |
1a4ac875 MS |
588 | return 0; |
589 | } | |
590 | ||
11222d0f LP |
591 | static int mount_load_root_mount(Unit *u) { |
592 | assert(u); | |
593 | ||
594 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
595 | return 0; | |
596 | ||
597 | u->perpetual = true; | |
598 | u->default_dependencies = false; | |
599 | ||
600 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
601 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
602 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
603 | ||
604 | if (!u->description) | |
605 | u->description = strdup("Root Mount"); | |
606 | ||
607 | return 1; | |
608 | } | |
609 | ||
1a4ac875 MS |
610 | static int mount_load(Unit *u) { |
611 | Mount *m = MOUNT(u); | |
612 | int r; | |
613 | ||
614 | assert(u); | |
615 | assert(u->load_state == UNIT_STUB); | |
616 | ||
11222d0f LP |
617 | r = mount_load_root_mount(u); |
618 | if (r < 0) | |
619 | return r; | |
620 | ||
621 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
622 | r = unit_load_fragment_and_dropin_optional(u); |
623 | else | |
624 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
625 | if (r < 0) |
626 | return r; | |
155da457 | 627 | |
1a4ac875 MS |
628 | /* This is a new unit? Then let's add in some extras */ |
629 | if (u->load_state == UNIT_LOADED) { | |
630 | r = mount_add_extras(m); | |
631 | if (r < 0) | |
632 | return r; | |
e537352b LP |
633 | } |
634 | ||
8d567588 | 635 | return mount_verify(m); |
e537352b LP |
636 | } |
637 | ||
638 | static void mount_set_state(Mount *m, MountState state) { | |
639 | MountState old_state; | |
640 | assert(m); | |
641 | ||
642 | old_state = m->state; | |
643 | m->state = state; | |
644 | ||
94ad3616 | 645 | if (!mount_state_active(state)) { |
718db961 | 646 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 647 | mount_unwatch_control_pid(m); |
e537352b | 648 | m->control_command = NULL; |
a16e1123 | 649 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
650 | } |
651 | ||
652 | if (state != old_state) | |
f2341e0a | 653 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 654 | |
9d2f5178 LP |
655 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
656 | m->reload_result = MOUNT_SUCCESS; | |
e537352b LP |
657 | } |
658 | ||
be847e82 | 659 | static int mount_coldplug(Unit *u) { |
e537352b | 660 | Mount *m = MOUNT(u); |
a16e1123 LP |
661 | MountState new_state = MOUNT_DEAD; |
662 | int r; | |
e537352b LP |
663 | |
664 | assert(m); | |
665 | assert(m->state == MOUNT_DEAD); | |
666 | ||
a16e1123 LP |
667 | if (m->deserialized_state != m->state) |
668 | new_state = m->deserialized_state; | |
669 | else if (m->from_proc_self_mountinfo) | |
670 | new_state = MOUNT_MOUNTED; | |
e537352b | 671 | |
5bcb0f2b LP |
672 | if (new_state == m->state) |
673 | return 0; | |
e537352b | 674 | |
c386f588 LP |
675 | if (m->control_pid > 0 && |
676 | pid_is_unwaited(m->control_pid) && | |
94ad3616 | 677 | mount_state_active(new_state)) { |
5bcb0f2b LP |
678 | |
679 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
680 | if (r < 0) | |
681 | return r; | |
e537352b | 682 | |
36c16a7c | 683 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
684 | if (r < 0) |
685 | return r; | |
a16e1123 | 686 | } |
e537352b | 687 | |
29206d46 LP |
688 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) |
689 | (void) unit_setup_dynamic_creds(u); | |
690 | ||
5bcb0f2b | 691 | mount_set_state(m, new_state); |
e537352b | 692 | return 0; |
e537352b LP |
693 | } |
694 | ||
695 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
696 | Mount *m = MOUNT(u); | |
697 | MountParameters *p; | |
698 | ||
699 | assert(m); | |
700 | assert(f); | |
701 | ||
cb39ed3f | 702 | p = get_mount_parameters(m); |
e537352b LP |
703 | |
704 | fprintf(f, | |
705 | "%sMount State: %s\n" | |
81a5c6d0 | 706 | "%sResult: %s\n" |
e537352b LP |
707 | "%sWhere: %s\n" |
708 | "%sWhat: %s\n" | |
709 | "%sFile System Type: %s\n" | |
710 | "%sOptions: %s\n" | |
e537352b LP |
711 | "%sFrom /proc/self/mountinfo: %s\n" |
712 | "%sFrom fragment: %s\n" | |
ad2706db | 713 | "%sExtrinsic: %s\n" |
e520950a | 714 | "%sDirectoryMode: %04o\n" |
49915de2 | 715 | "%sSloppyOptions: %s\n" |
4f8d40a9 BR |
716 | "%sLazyUnmount: %s\n" |
717 | "%sForceUnmount: %s\n", | |
a16e1123 | 718 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 719 | prefix, mount_result_to_string(m->result), |
e537352b | 720 | prefix, m->where, |
1e4fc9b1 HH |
721 | prefix, p ? strna(p->what) : "n/a", |
722 | prefix, p ? strna(p->fstype) : "n/a", | |
723 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
724 | prefix, yes_no(m->from_proc_self_mountinfo), |
725 | prefix, yes_no(m->from_fragment), | |
ad2706db | 726 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 727 | prefix, m->directory_mode, |
49915de2 | 728 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 BR |
729 | prefix, yes_no(m->lazy_unmount), |
730 | prefix, yes_no(m->force_unmount)); | |
e537352b LP |
731 | |
732 | if (m->control_pid > 0) | |
733 | fprintf(f, | |
ccd06097 ZJS |
734 | "%sControl PID: "PID_FMT"\n", |
735 | prefix, m->control_pid); | |
e537352b LP |
736 | |
737 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 738 | kill_context_dump(&m->kill_context, f, prefix); |
e537352b LP |
739 | } |
740 | ||
a16e1123 LP |
741 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
742 | pid_t pid; | |
743 | int r; | |
9fa95f85 | 744 | ExecParameters exec_params = { |
c39f1ce2 LP |
745 | .flags = EXEC_APPLY_PERMISSIONS|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
746 | .stdin_fd = -1, | |
747 | .stdout_fd = -1, | |
748 | .stderr_fd = -1, | |
9fa95f85 | 749 | }; |
a16e1123 LP |
750 | |
751 | assert(m); | |
752 | assert(c); | |
753 | assert(_pid); | |
754 | ||
5ad096b3 LP |
755 | (void) unit_realize_cgroup(UNIT(m)); |
756 | if (m->reset_cpu_usage) { | |
757 | (void) unit_reset_cpu_usage(UNIT(m)); | |
758 | m->reset_cpu_usage = false; | |
759 | } | |
4ad49000 | 760 | |
613b411c LP |
761 | r = unit_setup_exec_runtime(UNIT(m)); |
762 | if (r < 0) | |
36c16a7c | 763 | return r; |
613b411c | 764 | |
29206d46 LP |
765 | r = unit_setup_dynamic_creds(UNIT(m)); |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
36c16a7c | 769 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 770 | if (r < 0) |
36c16a7c | 771 | return r; |
a16e1123 | 772 | |
9fa95f85 | 773 | exec_params.environment = UNIT(m)->manager->environment; |
7d5ceb64 | 774 | exec_params.confirm_spawn = manager_get_confirm_spawn(UNIT(m)->manager); |
9fa95f85 DM |
775 | exec_params.cgroup_supported = UNIT(m)->manager->cgroup_supported; |
776 | exec_params.cgroup_path = UNIT(m)->cgroup_path; | |
a931ad47 | 777 | exec_params.cgroup_delegate = m->cgroup_context.delegate; |
9fa95f85 | 778 | exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(m)->manager); |
9fa95f85 | 779 | |
f2341e0a LP |
780 | r = exec_spawn(UNIT(m), |
781 | c, | |
4ad49000 | 782 | &m->exec_context, |
9fa95f85 | 783 | &exec_params, |
613b411c | 784 | m->exec_runtime, |
29206d46 | 785 | &m->dynamic_creds, |
4ad49000 LP |
786 | &pid); |
787 | if (r < 0) | |
36c16a7c | 788 | return r; |
a16e1123 | 789 | |
4ad49000 LP |
790 | r = unit_watch_pid(UNIT(m), pid); |
791 | if (r < 0) | |
a16e1123 | 792 | /* FIXME: we need to do something here */ |
36c16a7c | 793 | return r; |
a16e1123 LP |
794 | |
795 | *_pid = pid; | |
796 | ||
797 | return 0; | |
a16e1123 LP |
798 | } |
799 | ||
9d2f5178 | 800 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
801 | assert(m); |
802 | ||
a0fef983 | 803 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 804 | m->result = f; |
e537352b | 805 | |
29206d46 LP |
806 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
807 | ||
613b411c LP |
808 | exec_runtime_destroy(m->exec_runtime); |
809 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); | |
810 | ||
e66cf1a3 LP |
811 | exec_context_destroy_runtime_directory(&m->exec_context, manager_get_runtime_prefix(UNIT(m)->manager)); |
812 | ||
00d9ef85 LP |
813 | unit_unref_uid_gid(UNIT(m), true); |
814 | ||
29206d46 | 815 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
816 | } |
817 | ||
9d2f5178 | 818 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
819 | assert(m); |
820 | ||
a0fef983 | 821 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 822 | m->result = f; |
80876c20 LP |
823 | |
824 | mount_set_state(m, MOUNT_MOUNTED); | |
825 | } | |
826 | ||
9d2f5178 | 827 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
828 | int r; |
829 | ||
830 | assert(m); | |
831 | ||
a0fef983 | 832 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 833 | m->result = f; |
e537352b | 834 | |
cd2086fe LP |
835 | r = unit_kill_context( |
836 | UNIT(m), | |
837 | &m->kill_context, | |
db2cb23b UTL |
838 | (state != MOUNT_MOUNTING_SIGTERM && state != MOUNT_UNMOUNTING_SIGTERM && state != MOUNT_REMOUNTING_SIGTERM) ? |
839 | KILL_KILL : KILL_TERMINATE, | |
cd2086fe LP |
840 | -1, |
841 | m->control_pid, | |
842 | false); | |
843 | if (r < 0) | |
844 | goto fail; | |
e537352b | 845 | |
cd2086fe | 846 | if (r > 0) { |
36c16a7c | 847 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 848 | if (r < 0) |
80876c20 | 849 | goto fail; |
e537352b | 850 | |
80876c20 | 851 | mount_set_state(m, state); |
ac84d1fb LP |
852 | } else if (state == MOUNT_REMOUNTING_SIGTERM) |
853 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
854 | else if (state == MOUNT_REMOUNTING_SIGKILL) | |
9d2f5178 | 855 | mount_enter_mounted(m, MOUNT_SUCCESS); |
ac84d1fb LP |
856 | else if (state == MOUNT_MOUNTING_SIGTERM) |
857 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, MOUNT_SUCCESS); | |
858 | else if (state == MOUNT_UNMOUNTING_SIGTERM) | |
859 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
80876c20 | 860 | else |
9d2f5178 | 861 | mount_enter_dead(m, MOUNT_SUCCESS); |
e537352b LP |
862 | |
863 | return; | |
864 | ||
865 | fail: | |
f2341e0a | 866 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
e537352b | 867 | |
f2aed307 | 868 | if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 869 | mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES); |
80876c20 | 870 | else |
9d2f5178 | 871 | mount_enter_dead(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
872 | } |
873 | ||
9d2f5178 | 874 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
875 | int r; |
876 | ||
877 | assert(m); | |
878 | ||
7d54a03a LP |
879 | /* Start counting our attempts */ |
880 | if (!IN_SET(m->state, | |
881 | MOUNT_UNMOUNTING, | |
882 | MOUNT_UNMOUNTING_SIGTERM, | |
883 | MOUNT_UNMOUNTING_SIGKILL)) | |
884 | m->n_retry_umount = 0; | |
885 | ||
a16e1123 LP |
886 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
887 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 888 | |
f00929ad | 889 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, NULL); |
e520950a BR |
890 | if (r >= 0 && m->lazy_unmount) |
891 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
892 | if (r >= 0 && m->force_unmount) |
893 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 894 | if (r < 0) |
e537352b LP |
895 | goto fail; |
896 | ||
a16e1123 | 897 | mount_unwatch_control_pid(m); |
5e94833f | 898 | |
7d54a03a LP |
899 | r = mount_spawn(m, m->control_command, &m->control_pid); |
900 | if (r < 0) | |
e537352b LP |
901 | goto fail; |
902 | ||
903 | mount_set_state(m, MOUNT_UNMOUNTING); | |
904 | ||
905 | return; | |
906 | ||
907 | fail: | |
f2341e0a | 908 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
9d2f5178 | 909 | mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
910 | } |
911 | ||
8d567588 | 912 | static void mount_enter_mounting(Mount *m) { |
e537352b | 913 | int r; |
cb39ed3f | 914 | MountParameters *p; |
e537352b LP |
915 | |
916 | assert(m); | |
917 | ||
a16e1123 LP |
918 | m->control_command_id = MOUNT_EXEC_MOUNT; |
919 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 920 | |
f2341e0a LP |
921 | r = unit_fail_if_symlink(UNIT(m), m->where); |
922 | if (r < 0) | |
923 | goto fail; | |
924 | ||
925 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 926 | |
f2341e0a | 927 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 928 | |
cb39ed3f | 929 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 930 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 931 | if (p && mount_is_bind(p)) |
f2341e0a | 932 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 933 | |
b294b79f | 934 | if (p) { |
17a1c597 ZJS |
935 | _cleanup_free_ char *opts = NULL; |
936 | ||
b294b79f | 937 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
938 | if (r < 0) |
939 | goto fail; | |
940 | ||
b294b79f | 941 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
942 | if (r >= 0 && m->sloppy_options) |
943 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
944 | if (r >= 0 && p->fstype) |
945 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 946 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 947 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 948 | } else |
e537352b LP |
949 | r = -ENOENT; |
950 | ||
951 | if (r < 0) | |
952 | goto fail; | |
953 | ||
a16e1123 | 954 | mount_unwatch_control_pid(m); |
5e94833f | 955 | |
257f1d8e LP |
956 | r = mount_spawn(m, m->control_command, &m->control_pid); |
957 | if (r < 0) | |
e537352b LP |
958 | goto fail; |
959 | ||
960 | mount_set_state(m, MOUNT_MOUNTING); | |
961 | ||
962 | return; | |
963 | ||
964 | fail: | |
f2341e0a | 965 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
9d2f5178 | 966 | mount_enter_dead(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
967 | } |
968 | ||
9d2f5178 | 969 | static void mount_enter_remounting(Mount *m) { |
e537352b | 970 | int r; |
b294b79f | 971 | MountParameters *p; |
e537352b LP |
972 | |
973 | assert(m); | |
974 | ||
a16e1123 LP |
975 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
976 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 977 | |
b294b79f MO |
978 | p = get_mount_parameters_fragment(m); |
979 | if (p) { | |
e537352b LP |
980 | const char *o; |
981 | ||
b294b79f MO |
982 | if (p->options) |
983 | o = strjoina("remount,", p->options); | |
718db961 | 984 | else |
e537352b LP |
985 | o = "remount"; |
986 | ||
f00929ad | 987 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 988 | p->what, m->where, |
e86b3761 | 989 | "-o", o, NULL); |
e86b3761 ZJS |
990 | if (r >= 0 && m->sloppy_options) |
991 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
992 | if (r >= 0 && p->fstype) |
993 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 994 | } else |
e537352b LP |
995 | r = -ENOENT; |
996 | ||
60b912f6 | 997 | if (r < 0) |
e537352b | 998 | goto fail; |
e537352b | 999 | |
a16e1123 | 1000 | mount_unwatch_control_pid(m); |
5e94833f | 1001 | |
718db961 LP |
1002 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1003 | if (r < 0) | |
e537352b LP |
1004 | goto fail; |
1005 | ||
1006 | mount_set_state(m, MOUNT_REMOUNTING); | |
1007 | ||
1008 | return; | |
1009 | ||
1010 | fail: | |
f2341e0a | 1011 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
9d2f5178 LP |
1012 | m->reload_result = MOUNT_FAILURE_RESOURCES; |
1013 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
e537352b LP |
1014 | } |
1015 | ||
1016 | static int mount_start(Unit *u) { | |
1017 | Mount *m = MOUNT(u); | |
07299350 | 1018 | int r; |
e537352b LP |
1019 | |
1020 | assert(m); | |
1021 | ||
1022 | /* We cannot fulfill this request right now, try again later | |
1023 | * please! */ | |
f2aed307 LP |
1024 | if (IN_SET(m->state, |
1025 | MOUNT_UNMOUNTING, | |
1026 | MOUNT_UNMOUNTING_SIGTERM, | |
1027 | MOUNT_UNMOUNTING_SIGKILL, | |
1028 | MOUNT_MOUNTING_SIGTERM, | |
1029 | MOUNT_MOUNTING_SIGKILL)) | |
e537352b LP |
1030 | return -EAGAIN; |
1031 | ||
1032 | /* Already on it! */ | |
60b912f6 | 1033 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1034 | return 0; |
1035 | ||
f2aed307 | 1036 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1037 | |
07299350 LP |
1038 | r = unit_start_limit_test(u); |
1039 | if (r < 0) { | |
1040 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1041 | return r; | |
1042 | } | |
1043 | ||
4b58153d LP |
1044 | r = unit_acquire_invocation_id(u); |
1045 | if (r < 0) | |
1046 | return r; | |
1047 | ||
9d2f5178 LP |
1048 | m->result = MOUNT_SUCCESS; |
1049 | m->reload_result = MOUNT_SUCCESS; | |
5ad096b3 | 1050 | m->reset_cpu_usage = true; |
9d2f5178 | 1051 | |
8d567588 | 1052 | mount_enter_mounting(m); |
82a2b6bb | 1053 | return 1; |
e537352b LP |
1054 | } |
1055 | ||
1056 | static int mount_stop(Unit *u) { | |
1057 | Mount *m = MOUNT(u); | |
1058 | ||
1059 | assert(m); | |
1060 | ||
e537352b | 1061 | /* Already on it */ |
f2aed307 LP |
1062 | if (IN_SET(m->state, |
1063 | MOUNT_UNMOUNTING, | |
1064 | MOUNT_UNMOUNTING_SIGKILL, | |
1065 | MOUNT_UNMOUNTING_SIGTERM, | |
1066 | MOUNT_MOUNTING_SIGTERM, | |
1067 | MOUNT_MOUNTING_SIGKILL)) | |
e537352b LP |
1068 | return 0; |
1069 | ||
f2aed307 LP |
1070 | assert(IN_SET(m->state, |
1071 | MOUNT_MOUNTING, | |
1072 | MOUNT_MOUNTING_DONE, | |
1073 | MOUNT_MOUNTED, | |
1074 | MOUNT_REMOUNTING, | |
1075 | MOUNT_REMOUNTING_SIGTERM, | |
1076 | MOUNT_REMOUNTING_SIGKILL)); | |
e537352b | 1077 | |
9d2f5178 | 1078 | mount_enter_unmounting(m); |
82a2b6bb | 1079 | return 1; |
e537352b LP |
1080 | } |
1081 | ||
1082 | static int mount_reload(Unit *u) { | |
1083 | Mount *m = MOUNT(u); | |
1084 | ||
1085 | assert(m); | |
1086 | ||
1087 | if (m->state == MOUNT_MOUNTING_DONE) | |
1088 | return -EAGAIN; | |
1089 | ||
1090 | assert(m->state == MOUNT_MOUNTED); | |
1091 | ||
9d2f5178 | 1092 | mount_enter_remounting(m); |
2d018ae2 | 1093 | return 1; |
e537352b LP |
1094 | } |
1095 | ||
a16e1123 LP |
1096 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1097 | Mount *m = MOUNT(u); | |
1098 | ||
1099 | assert(m); | |
1100 | assert(f); | |
1101 | assert(fds); | |
1102 | ||
1103 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1104 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1105 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1106 | |
1107 | if (m->control_pid > 0) | |
ccd06097 | 1108 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1109 | |
1110 | if (m->control_command_id >= 0) | |
1111 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1112 | ||
1113 | return 0; | |
1114 | } | |
1115 | ||
1116 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1117 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1118 | |
1119 | assert(u); | |
1120 | assert(key); | |
1121 | assert(value); | |
1122 | assert(fds); | |
1123 | ||
1124 | if (streq(key, "state")) { | |
1125 | MountState state; | |
1126 | ||
1127 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1128 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1129 | else |
1130 | m->deserialized_state = state; | |
9d2f5178 LP |
1131 | } else if (streq(key, "result")) { |
1132 | MountResult f; | |
a16e1123 | 1133 | |
9d2f5178 LP |
1134 | f = mount_result_from_string(value); |
1135 | if (f < 0) | |
f2341e0a | 1136 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1137 | else if (f != MOUNT_SUCCESS) |
1138 | m->result = f; | |
1139 | ||
1140 | } else if (streq(key, "reload-result")) { | |
1141 | MountResult f; | |
1142 | ||
1143 | f = mount_result_from_string(value); | |
1144 | if (f < 0) | |
f2341e0a | 1145 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1146 | else if (f != MOUNT_SUCCESS) |
1147 | m->reload_result = f; | |
a16e1123 LP |
1148 | |
1149 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1150 | pid_t pid; |
a16e1123 | 1151 | |
e364ad06 | 1152 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1153 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1154 | else |
5925dd3c | 1155 | m->control_pid = pid; |
a16e1123 LP |
1156 | } else if (streq(key, "control-command")) { |
1157 | MountExecCommand id; | |
1158 | ||
f2341e0a LP |
1159 | id = mount_exec_command_from_string(value); |
1160 | if (id < 0) | |
1161 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1162 | else { |
1163 | m->control_command_id = id; | |
1164 | m->control_command = m->exec_command + id; | |
1165 | } | |
a16e1123 | 1166 | } else |
f2341e0a | 1167 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1168 | |
1169 | return 0; | |
1170 | } | |
1171 | ||
44a6b1b6 | 1172 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1173 | assert(u); |
1174 | ||
1175 | return state_translation_table[MOUNT(u)->state]; | |
1176 | } | |
1177 | ||
44a6b1b6 | 1178 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1179 | assert(u); |
1180 | ||
a16e1123 | 1181 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1182 | } |
1183 | ||
44a6b1b6 | 1184 | _pure_ static bool mount_check_gc(Unit *u) { |
701cc384 LP |
1185 | Mount *m = MOUNT(u); |
1186 | ||
1187 | assert(m); | |
1188 | ||
6b1dc2bd | 1189 | return m->from_proc_self_mountinfo; |
701cc384 LP |
1190 | } |
1191 | ||
e537352b LP |
1192 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1193 | Mount *m = MOUNT(u); | |
9d2f5178 | 1194 | MountResult f; |
e537352b LP |
1195 | |
1196 | assert(m); | |
1197 | assert(pid >= 0); | |
1198 | ||
8c47c732 LP |
1199 | if (pid != m->control_pid) |
1200 | return; | |
e537352b | 1201 | |
e537352b LP |
1202 | m->control_pid = 0; |
1203 | ||
1f0958f6 | 1204 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1205 | f = MOUNT_SUCCESS; |
1206 | else if (code == CLD_EXITED) | |
1207 | f = MOUNT_FAILURE_EXIT_CODE; | |
1208 | else if (code == CLD_KILLED) | |
1209 | f = MOUNT_FAILURE_SIGNAL; | |
1210 | else if (code == CLD_DUMPED) | |
1211 | f = MOUNT_FAILURE_CORE_DUMP; | |
1212 | else | |
1213 | assert_not_reached("Unknown code"); | |
1214 | ||
a0fef983 | 1215 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 1216 | m->result = f; |
8c47c732 | 1217 | |
a16e1123 | 1218 | if (m->control_command) { |
6ea832a2 | 1219 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1220 | |
a16e1123 LP |
1221 | m->control_command = NULL; |
1222 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1223 | } | |
1224 | ||
f2341e0a LP |
1225 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1226 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b LP |
1227 | |
1228 | /* Note that mount(8) returning and the kernel sending us a | |
1229 | * mount table change event might happen out-of-order. If an | |
1230 | * operation succeed we assume the kernel will follow soon too | |
1231 | * and already change into the resulting state. If it fails | |
1232 | * we check if the kernel still knows about the mount. and | |
1233 | * change state accordingly. */ | |
1234 | ||
1235 | switch (m->state) { | |
1236 | ||
1237 | case MOUNT_MOUNTING: | |
1238 | case MOUNT_MOUNTING_DONE: | |
1239 | case MOUNT_MOUNTING_SIGKILL: | |
1240 | case MOUNT_MOUNTING_SIGTERM: | |
e537352b | 1241 | |
052364d4 LP |
1242 | if (f == MOUNT_SUCCESS || m->from_proc_self_mountinfo) |
1243 | /* If /bin/mount returned success, or if we see the mount point in /proc/self/mountinfo we are | |
ce954c03 | 1244 | * happy. If we see the first condition first, we should see the second condition |
052364d4 | 1245 | * immediately after – or /bin/mount lies to us and is broken. */ |
9d2f5178 | 1246 | mount_enter_mounted(m, f); |
e537352b | 1247 | else |
9d2f5178 | 1248 | mount_enter_dead(m, f); |
e537352b LP |
1249 | break; |
1250 | ||
e2f3b44c LP |
1251 | case MOUNT_REMOUNTING: |
1252 | case MOUNT_REMOUNTING_SIGKILL: | |
1253 | case MOUNT_REMOUNTING_SIGTERM: | |
1254 | ||
9d2f5178 | 1255 | m->reload_result = f; |
e2f3b44c | 1256 | if (m->from_proc_self_mountinfo) |
9d2f5178 | 1257 | mount_enter_mounted(m, MOUNT_SUCCESS); |
e2f3b44c | 1258 | else |
9d2f5178 | 1259 | mount_enter_dead(m, MOUNT_SUCCESS); |
e2f3b44c LP |
1260 | |
1261 | break; | |
1262 | ||
e537352b LP |
1263 | case MOUNT_UNMOUNTING: |
1264 | case MOUNT_UNMOUNTING_SIGKILL: | |
1265 | case MOUNT_UNMOUNTING_SIGTERM: | |
1266 | ||
7d54a03a LP |
1267 | if (f == MOUNT_SUCCESS) { |
1268 | ||
1269 | if (m->from_proc_self_mountinfo) { | |
1270 | ||
1271 | /* Still a mount point? If so, let's | |
1272 | * try again. Most likely there were | |
1273 | * multiple mount points stacked on | |
1274 | * top of each other. Note that due to | |
1275 | * the io event priority logic we can | |
1276 | * be sure the new mountinfo is loaded | |
1277 | * before we process the SIGCHLD for | |
1278 | * the mount command. */ | |
1279 | ||
1280 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
f2341e0a | 1281 | log_unit_debug(u, "Mount still present, trying again."); |
7d54a03a LP |
1282 | m->n_retry_umount++; |
1283 | mount_enter_unmounting(m); | |
1284 | } else { | |
f2341e0a | 1285 | log_unit_debug(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
7d54a03a LP |
1286 | mount_enter_mounted(m, f); |
1287 | } | |
1288 | } else | |
1289 | mount_enter_dead(m, f); | |
1290 | ||
1291 | } else if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1292 | mount_enter_mounted(m, f); |
e537352b | 1293 | else |
9d2f5178 | 1294 | mount_enter_dead(m, f); |
e537352b LP |
1295 | break; |
1296 | ||
1297 | default: | |
1298 | assert_not_reached("Uh, control process died at wrong time."); | |
1299 | } | |
c4e2ceae LP |
1300 | |
1301 | /* Notify clients about changed exit status */ | |
1302 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1303 | } |
1304 | ||
718db961 LP |
1305 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1306 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1307 | |
1308 | assert(m); | |
718db961 | 1309 | assert(m->timer_event_source == source); |
e537352b LP |
1310 | |
1311 | switch (m->state) { | |
1312 | ||
1313 | case MOUNT_MOUNTING: | |
1314 | case MOUNT_MOUNTING_DONE: | |
f2341e0a | 1315 | log_unit_warning(UNIT(m), "Mounting timed out. Stopping."); |
9d2f5178 | 1316 | mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1317 | break; |
1318 | ||
1319 | case MOUNT_REMOUNTING: | |
f2341e0a | 1320 | log_unit_warning(UNIT(m), "Remounting timed out. Stopping."); |
9d2f5178 LP |
1321 | m->reload_result = MOUNT_FAILURE_TIMEOUT; |
1322 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
e537352b LP |
1323 | break; |
1324 | ||
1325 | case MOUNT_UNMOUNTING: | |
f2341e0a | 1326 | log_unit_warning(UNIT(m), "Unmounting timed out. Stopping."); |
9d2f5178 | 1327 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1328 | break; |
1329 | ||
1330 | case MOUNT_MOUNTING_SIGTERM: | |
4819ff03 | 1331 | if (m->kill_context.send_sigkill) { |
f2341e0a | 1332 | log_unit_warning(UNIT(m), "Mounting timed out. Killing."); |
9d2f5178 | 1333 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1334 | } else { |
f2341e0a | 1335 | log_unit_warning(UNIT(m), "Mounting timed out. Skipping SIGKILL. Ignoring."); |
ba035df2 LP |
1336 | |
1337 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1338 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1339 | else |
9d2f5178 | 1340 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1341 | } |
e537352b LP |
1342 | break; |
1343 | ||
1344 | case MOUNT_REMOUNTING_SIGTERM: | |
4819ff03 | 1345 | if (m->kill_context.send_sigkill) { |
f2341e0a | 1346 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
9d2f5178 | 1347 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1348 | } else { |
f2341e0a | 1349 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
ba035df2 LP |
1350 | |
1351 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1352 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1353 | else |
9d2f5178 | 1354 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1355 | } |
e537352b LP |
1356 | break; |
1357 | ||
1358 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1359 | if (m->kill_context.send_sigkill) { |
f2341e0a | 1360 | log_unit_warning(UNIT(m), "Unmounting timed out. Killing."); |
9d2f5178 | 1361 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1362 | } else { |
f2341e0a | 1363 | log_unit_warning(UNIT(m), "Unmounting timed out. Skipping SIGKILL. Ignoring."); |
ba035df2 LP |
1364 | |
1365 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1366 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1367 | else |
9d2f5178 | 1368 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1369 | } |
e537352b LP |
1370 | break; |
1371 | ||
1372 | case MOUNT_MOUNTING_SIGKILL: | |
1373 | case MOUNT_REMOUNTING_SIGKILL: | |
1374 | case MOUNT_UNMOUNTING_SIGKILL: | |
f2341e0a | 1375 | log_unit_warning(UNIT(m),"Mount process still around after SIGKILL. Ignoring."); |
e537352b LP |
1376 | |
1377 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1378 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
e537352b | 1379 | else |
9d2f5178 | 1380 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1381 | break; |
1382 | ||
1383 | default: | |
1384 | assert_not_reached("Timeout at wrong time."); | |
1385 | } | |
718db961 LP |
1386 | |
1387 | return 0; | |
e537352b LP |
1388 | } |
1389 | ||
03b8cfed FB |
1390 | typedef struct { |
1391 | bool is_mounted; | |
1392 | bool just_mounted; | |
1393 | bool just_changed; | |
1394 | } MountSetupFlags; | |
1395 | ||
1396 | static int mount_setup_new_unit( | |
1397 | Unit *u, | |
1398 | const char *what, | |
1399 | const char *where, | |
1400 | const char *options, | |
1401 | const char *fstype, | |
1402 | MountSetupFlags *flags) { | |
1403 | ||
1404 | MountParameters *p; | |
1405 | ||
1406 | assert(u); | |
1407 | assert(flags); | |
1408 | ||
1409 | u->source_path = strdup("/proc/self/mountinfo"); | |
1410 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1411 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1412 | return -ENOMEM; |
1413 | ||
1414 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1415 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1416 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1417 | ||
1418 | p->what = strdup(what); | |
1419 | p->options = strdup(options); | |
1420 | p->fstype = strdup(fstype); | |
1421 | if (!p->what || !p->options || !p->fstype) | |
1422 | return -ENOMEM; | |
1423 | ||
1424 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1425 | const char *target; | |
1426 | int r; | |
1427 | ||
1428 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
1429 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true); | |
1430 | if (r < 0) | |
1431 | return r; | |
1432 | ||
1433 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); | |
1434 | if (r < 0) | |
1435 | return r; | |
1436 | } | |
1437 | ||
cfcd4318 | 1438 | unit_add_to_load_queue(u); |
03b8cfed FB |
1439 | flags->is_mounted = true; |
1440 | flags->just_mounted = true; | |
1441 | flags->just_changed = true; | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | static int mount_setup_existing_unit( | |
1447 | Unit *u, | |
1448 | const char *what, | |
1449 | const char *where, | |
1450 | const char *options, | |
1451 | const char *fstype, | |
1452 | MountSetupFlags *flags) { | |
1453 | ||
1454 | MountParameters *p; | |
1455 | bool load_extras = false; | |
1456 | int r1, r2, r3; | |
1457 | ||
1458 | assert(u); | |
1459 | assert(flags); | |
1460 | ||
1461 | if (!MOUNT(u)->where) { | |
1462 | MOUNT(u)->where = strdup(where); | |
1463 | if (!MOUNT(u)->where) | |
1464 | return -ENOMEM; | |
1465 | } | |
1466 | ||
1467 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1468 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1469 | ||
1470 | r1 = free_and_strdup(&p->what, what); | |
1471 | r2 = free_and_strdup(&p->options, options); | |
1472 | r3 = free_and_strdup(&p->fstype, fstype); | |
1473 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1474 | return -ENOMEM; | |
1475 | ||
1476 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1477 | flags->is_mounted = true; | |
1478 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
1479 | ||
1480 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1481 | ||
1482 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1483 | /* _netdev option may have shown up late, or on a | |
1484 | * remount. Add remote-fs dependencies, even though | |
1485 | * local-fs ones may already be there. | |
1486 | * | |
1487 | * Note: due to a current limitation (we don't track | |
1488 | * in the dependency "Set*" objects who created a | |
1489 | * dependency), we can only add deps, never lose them, | |
1490 | * until the next full daemon-reload. */ | |
1491 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, NULL, true); | |
1492 | load_extras = true; | |
1493 | } | |
1494 | ||
1495 | if (u->load_state == UNIT_NOT_FOUND) { | |
1496 | u->load_state = UNIT_LOADED; | |
1497 | u->load_error = 0; | |
1498 | ||
1499 | /* Load in the extras later on, after we | |
1500 | * finished initialization of the unit */ | |
1501 | ||
1502 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1503 | load_extras = true; | |
1504 | flags->just_changed = true; | |
1505 | } | |
1506 | ||
1507 | if (load_extras) | |
1508 | return mount_add_extras(MOUNT(u)); | |
1509 | ||
1510 | return 0; | |
1511 | } | |
1512 | ||
628c89cc | 1513 | static int mount_setup_unit( |
e537352b LP |
1514 | Manager *m, |
1515 | const char *what, | |
1516 | const char *where, | |
1517 | const char *options, | |
1518 | const char *fstype, | |
e537352b | 1519 | bool set_flags) { |
057d9ab8 | 1520 | |
03b8cfed FB |
1521 | _cleanup_free_ char *e = NULL; |
1522 | MountSetupFlags flags; | |
057d9ab8 LP |
1523 | Unit *u; |
1524 | int r; | |
b08d03ff | 1525 | |
f50e0a01 | 1526 | assert(m); |
b08d03ff LP |
1527 | assert(what); |
1528 | assert(where); | |
e537352b LP |
1529 | assert(options); |
1530 | assert(fstype); | |
1531 | ||
e537352b LP |
1532 | /* Ignore API mount points. They should never be referenced in |
1533 | * dependencies ever. */ | |
33ff02c9 | 1534 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1535 | return 0; |
b08d03ff | 1536 | |
8d567588 LP |
1537 | if (streq(fstype, "autofs")) |
1538 | return 0; | |
1539 | ||
4e85aff4 LP |
1540 | /* probably some kind of swap, ignore */ |
1541 | if (!is_path(where)) | |
b08d03ff LP |
1542 | return 0; |
1543 | ||
7410616c LP |
1544 | r = unit_name_from_path(where, ".mount", &e); |
1545 | if (r < 0) | |
1546 | return r; | |
b08d03ff | 1547 | |
7d17cfbc MS |
1548 | u = manager_get_unit(m, e); |
1549 | if (!u) { | |
03b8cfed FB |
1550 | /* First time we see this mount point meaning that it's |
1551 | * not been initiated by a mount unit but rather by the | |
1552 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1553 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1554 | if (r < 0) |
1555 | goto fail; | |
1556 | ||
03b8cfed FB |
1557 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1558 | if (r < 0) | |
1559 | unit_free(u); | |
1560 | } else | |
1561 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1562 | |
03b8cfed | 1563 | if (r < 0) |
e537352b | 1564 | goto fail; |
ff5f34d0 | 1565 | |
6b1dc2bd | 1566 | if (set_flags) { |
03b8cfed FB |
1567 | MOUNT(u)->is_mounted = flags.is_mounted; |
1568 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1569 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1570 | } |
1571 | ||
03b8cfed | 1572 | if (flags.just_changed) |
ff5f34d0 | 1573 | unit_add_to_dbus_queue(u); |
c1e1601e | 1574 | |
b08d03ff | 1575 | return 0; |
b08d03ff | 1576 | fail: |
628c89cc | 1577 | log_warning_errno(r, "Failed to set up mount unit: %m"); |
4e85aff4 | 1578 | return r; |
b08d03ff LP |
1579 | } |
1580 | ||
ef734fd6 | 1581 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1582 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1583 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1584 | int r = 0; |
b08d03ff LP |
1585 | |
1586 | assert(m); | |
1587 | ||
628c89cc LP |
1588 | t = mnt_new_table(); |
1589 | if (!t) | |
8d3ae2bd | 1590 | return log_oom(); |
b08d03ff | 1591 | |
628c89cc LP |
1592 | i = mnt_new_iter(MNT_ITER_FORWARD); |
1593 | if (!i) | |
1594 | return log_oom(); | |
1595 | ||
1596 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1597 | if (r < 0) |
628c89cc | 1598 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1599 | |
5cca8def ZJS |
1600 | r = 0; |
1601 | for (;;) { | |
8d3ae2bd | 1602 | const char *device, *path, *options, *fstype; |
527b7a42 | 1603 | _cleanup_free_ char *d = NULL, *p = NULL; |
628c89cc | 1604 | struct libmnt_fs *fs; |
8d3ae2bd | 1605 | int k; |
b08d03ff | 1606 | |
628c89cc | 1607 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1608 | if (k == 1) |
1609 | break; | |
628c89cc LP |
1610 | if (k < 0) |
1611 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1612 | |
8d3ae2bd CL |
1613 | device = mnt_fs_get_source(fs); |
1614 | path = mnt_fs_get_target(fs); | |
1615 | options = mnt_fs_get_options(fs); | |
1616 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1617 | |
c0a7f8d3 DM |
1618 | if (!device || !path) |
1619 | continue; | |
1620 | ||
527b7a42 | 1621 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1622 | return log_oom(); |
1623 | ||
527b7a42 | 1624 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1625 | return log_oom(); |
b08d03ff | 1626 | |
628c89cc LP |
1627 | (void) device_found_node(m, d, true, DEVICE_FOUND_MOUNT, set_flags); |
1628 | ||
1629 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1630 | if (r == 0 && k < 0) |
60b912f6 | 1631 | r = k; |
b08d03ff LP |
1632 | } |
1633 | ||
e537352b LP |
1634 | return r; |
1635 | } | |
1636 | ||
1637 | static void mount_shutdown(Manager *m) { | |
d379d442 | 1638 | |
e537352b LP |
1639 | assert(m); |
1640 | ||
718db961 LP |
1641 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1642 | ||
d379d442 KZ |
1643 | mnt_unref_monitor(m->mount_monitor); |
1644 | m->mount_monitor = NULL; | |
b08d03ff LP |
1645 | } |
1646 | ||
7a7821c8 | 1647 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1648 | Mount *m = MOUNT(u); |
7a7821c8 | 1649 | usec_t t; |
68db7a3b ZJS |
1650 | int r; |
1651 | ||
1652 | if (!m->timer_event_source) | |
1653 | return 0; | |
1654 | ||
7a7821c8 | 1655 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1656 | if (r < 0) |
1657 | return r; | |
7a7821c8 LP |
1658 | if (t == USEC_INFINITY) |
1659 | return 0; | |
68db7a3b | 1660 | |
7a7821c8 | 1661 | *timeout = t; |
68db7a3b ZJS |
1662 | return 1; |
1663 | } | |
1664 | ||
1201cae7 | 1665 | static int synthesize_root_mount(Manager *m) { |
11222d0f LP |
1666 | Unit *u; |
1667 | int r; | |
1668 | ||
1669 | assert(m); | |
1670 | ||
1671 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1672 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1673 | ||
1674 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1675 | if (!u) { | |
a581e45a | 1676 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
1201cae7 LP |
1677 | if (r < 0) |
1678 | return log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
11222d0f LP |
1679 | } |
1680 | ||
1681 | u->perpetual = true; | |
1682 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1683 | ||
1684 | unit_add_to_load_queue(u); | |
1685 | unit_add_to_dbus_queue(u); | |
1201cae7 LP |
1686 | |
1687 | return 0; | |
11222d0f LP |
1688 | } |
1689 | ||
1690 | static bool mount_is_mounted(Mount *m) { | |
1691 | assert(m); | |
1692 | ||
1693 | return UNIT(m)->perpetual || m->is_mounted; | |
1694 | } | |
1695 | ||
ba64af90 | 1696 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1697 | int r; |
d379d442 | 1698 | |
b08d03ff LP |
1699 | assert(m); |
1700 | ||
1201cae7 LP |
1701 | r = synthesize_root_mount(m); |
1702 | if (r < 0) | |
1703 | goto fail; | |
11222d0f | 1704 | |
8d3ae2bd CL |
1705 | mnt_init_debug(0); |
1706 | ||
d379d442 KZ |
1707 | if (!m->mount_monitor) { |
1708 | int fd; | |
ef734fd6 | 1709 | |
d379d442 KZ |
1710 | m->mount_monitor = mnt_new_monitor(); |
1711 | if (!m->mount_monitor) { | |
ba64af90 | 1712 | log_oom(); |
718db961 | 1713 | goto fail; |
d379d442 | 1714 | } |
29083707 | 1715 | |
d379d442 | 1716 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1717 | if (r < 0) { |
1718 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1719 | goto fail; |
ba64af90 LP |
1720 | } |
1721 | ||
d379d442 | 1722 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1723 | if (r < 0) { |
1724 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1725 | goto fail; |
ba64af90 | 1726 | } |
90598531 | 1727 | |
d379d442 KZ |
1728 | /* mnt_unref_monitor() will close the fd */ |
1729 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1730 | if (r < 0) { |
1731 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1732 | goto fail; |
ba64af90 | 1733 | } |
befb6d54 | 1734 | |
d379d442 | 1735 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1736 | if (r < 0) { |
1737 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1738 | goto fail; |
ba64af90 | 1739 | } |
befb6d54 | 1740 | |
d379d442 | 1741 | r = sd_event_source_set_priority(m->mount_event_source, -10); |
ba64af90 LP |
1742 | if (r < 0) { |
1743 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1744 | goto fail; |
ba64af90 | 1745 | } |
7dfbe2e3 | 1746 | |
d379d442 | 1747 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1748 | } |
1749 | ||
e62d8c39 ZJS |
1750 | r = mount_load_proc_self_mountinfo(m, false); |
1751 | if (r < 0) | |
b08d03ff LP |
1752 | goto fail; |
1753 | ||
ba64af90 | 1754 | return; |
b08d03ff LP |
1755 | |
1756 | fail: | |
1757 | mount_shutdown(m); | |
5cb5a6ff LP |
1758 | } |
1759 | ||
718db961 | 1760 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1761 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1762 | Manager *m = userdata; |
fcd8b266 LP |
1763 | const char *what; |
1764 | Iterator i; | |
595ed347 | 1765 | Unit *u; |
ef734fd6 LP |
1766 | int r; |
1767 | ||
1768 | assert(m); | |
d379d442 | 1769 | assert(revents & EPOLLIN); |
ef734fd6 | 1770 | |
d379d442 | 1771 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1772 | bool rescan = false; |
befb6d54 | 1773 | |
d379d442 KZ |
1774 | /* Drain all events and verify that the event is valid. |
1775 | * | |
1776 | * Note that libmount also monitors /run/mount mkdir if the | |
1777 | * directory does not exist yet. The mkdir may generate event | |
1778 | * which is irrelevant for us. | |
1779 | * | |
1780 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1781 | do { | |
1782 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1783 | if (r == 0) | |
1784 | rescan = true; | |
1785 | else if (r < 0) | |
1786 | return log_error_errno(r, "Failed to drain libmount events"); | |
1787 | } while (r == 0); | |
1788 | ||
1789 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1790 | if (!rescan) |
1791 | return 0; | |
1792 | } | |
ef734fd6 | 1793 | |
4f0eedb7 ZJS |
1794 | r = mount_load_proc_self_mountinfo(m, true); |
1795 | if (r < 0) { | |
e537352b | 1796 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1797 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1798 | Mount *mount = MOUNT(u); | |
e537352b LP |
1799 | |
1800 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1801 | } | |
1802 | ||
718db961 | 1803 | return 0; |
ef734fd6 LP |
1804 | } |
1805 | ||
1806 | manager_dispatch_load_queue(m); | |
1807 | ||
595ed347 MS |
1808 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1809 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1810 | |
11222d0f | 1811 | if (!mount_is_mounted(mount)) { |
e537352b | 1812 | |
394763f6 LP |
1813 | /* A mount point is not around right now. It |
1814 | * might be gone, or might never have | |
1815 | * existed. */ | |
1816 | ||
1817 | if (mount->from_proc_self_mountinfo && | |
1818 | mount->parameters_proc_self_mountinfo.what) { | |
1819 | ||
1820 | /* Remember that this device might just have disappeared */ | |
1821 | if (set_ensure_allocated(&gone, &string_hash_ops) < 0 || | |
1822 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) | |
1823 | log_oom(); /* we don't care too much about OOM here... */ | |
1824 | } | |
fcd8b266 | 1825 | |
ef734fd6 | 1826 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1827 | |
1828 | switch (mount->state) { | |
1829 | ||
1830 | case MOUNT_MOUNTED: | |
aef83136 LP |
1831 | /* This has just been unmounted by |
1832 | * somebody else, follow the state | |
1833 | * change. */ | |
cf6f7f66 | 1834 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1835 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1836 | break; |
1837 | ||
1838 | default: | |
e537352b | 1839 | break; |
e537352b LP |
1840 | } |
1841 | ||
1842 | } else if (mount->just_mounted || mount->just_changed) { | |
1843 | ||
fcd8b266 | 1844 | /* A mount point was added or changed */ |
e537352b LP |
1845 | |
1846 | switch (mount->state) { | |
1847 | ||
1848 | case MOUNT_DEAD: | |
fdf20a31 | 1849 | case MOUNT_FAILED: |
4b58153d LP |
1850 | |
1851 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1852 | * generate a new invocation ID for this implicitly and automatically. */ | |
1853 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1854 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1855 | break; |
1856 | ||
1857 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1858 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1859 | break; |
1860 | ||
1861 | default: | |
1862 | /* Nothing really changed, but let's | |
1863 | * issue an notification call | |
1864 | * nonetheless, in case somebody is | |
1865 | * waiting for this. (e.g. file system | |
1866 | * ro/rw remounts.) */ | |
1867 | mount_set_state(mount, mount->state); | |
1868 | break; | |
1869 | } | |
394763f6 | 1870 | } |
fcd8b266 | 1871 | |
11222d0f | 1872 | if (mount_is_mounted(mount) && |
394763f6 LP |
1873 | mount->from_proc_self_mountinfo && |
1874 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1875 | |
394763f6 LP |
1876 | if (set_ensure_allocated(&around, &string_hash_ops) < 0 || |
1877 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) | |
1878 | log_oom(); | |
e537352b LP |
1879 | } |
1880 | ||
1881 | /* Reset the flags for later calls */ | |
1882 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1883 | } | |
718db961 | 1884 | |
fcd8b266 LP |
1885 | SET_FOREACH(what, gone, i) { |
1886 | if (set_contains(around, what)) | |
1887 | continue; | |
1888 | ||
1889 | /* Let the device units know that the device is no longer mounted */ | |
1890 | (void) device_found_node(m, what, false, DEVICE_FOUND_MOUNT, true); | |
1891 | } | |
1892 | ||
718db961 | 1893 | return 0; |
e537352b LP |
1894 | } |
1895 | ||
fdf20a31 | 1896 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1897 | Mount *m = MOUNT(u); |
1898 | ||
1899 | assert(m); | |
1900 | ||
fdf20a31 | 1901 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1902 | mount_set_state(m, MOUNT_DEAD); |
1903 | ||
9d2f5178 LP |
1904 | m->result = MOUNT_SUCCESS; |
1905 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1906 | } |
1907 | ||
718db961 | 1908 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 1909 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1910 | } |
1911 | ||
291d565a LP |
1912 | static int mount_control_pid(Unit *u) { |
1913 | Mount *m = MOUNT(u); | |
1914 | ||
1915 | assert(m); | |
1916 | ||
1917 | return m->control_pid; | |
1918 | } | |
1919 | ||
a16e1123 LP |
1920 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1921 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1922 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1923 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1924 | }; | |
1925 | ||
1926 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1927 | ||
9d2f5178 LP |
1928 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1929 | [MOUNT_SUCCESS] = "success", | |
1930 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1931 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1932 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1933 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1934 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1935 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
9d2f5178 LP |
1936 | }; |
1937 | ||
1938 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1939 | ||
87f0e418 | 1940 | const UnitVTable mount_vtable = { |
7d17cfbc | 1941 | .object_size = sizeof(Mount), |
718db961 LP |
1942 | .exec_context_offset = offsetof(Mount, exec_context), |
1943 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1944 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1945 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1946 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1947 | |
f975e971 LP |
1948 | .sections = |
1949 | "Unit\0" | |
1950 | "Mount\0" | |
1951 | "Install\0", | |
4ad49000 | 1952 | .private_section = "Mount", |
71645aca | 1953 | |
e537352b LP |
1954 | .init = mount_init, |
1955 | .load = mount_load, | |
034c6ed7 | 1956 | .done = mount_done, |
e537352b | 1957 | |
f50e0a01 LP |
1958 | .coldplug = mount_coldplug, |
1959 | ||
034c6ed7 | 1960 | .dump = mount_dump, |
5cb5a6ff | 1961 | |
e537352b LP |
1962 | .start = mount_start, |
1963 | .stop = mount_stop, | |
1964 | .reload = mount_reload, | |
1965 | ||
8a0867d6 LP |
1966 | .kill = mount_kill, |
1967 | ||
a16e1123 LP |
1968 | .serialize = mount_serialize, |
1969 | .deserialize_item = mount_deserialize_item, | |
1970 | ||
f50e0a01 | 1971 | .active_state = mount_active_state, |
10a94420 | 1972 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1973 | |
701cc384 LP |
1974 | .check_gc = mount_check_gc, |
1975 | ||
e537352b | 1976 | .sigchld_event = mount_sigchld_event, |
e537352b | 1977 | |
fdf20a31 | 1978 | .reset_failed = mount_reset_failed, |
291d565a LP |
1979 | |
1980 | .control_pid = mount_control_pid, | |
5632e374 | 1981 | |
718db961 | 1982 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1983 | .bus_set_property = bus_mount_set_property, |
1984 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1985 | |
68db7a3b ZJS |
1986 | .get_timeout = mount_get_timeout, |
1987 | ||
0e252f6b TG |
1988 | .can_transient = true, |
1989 | ||
f50e0a01 | 1990 | .enumerate = mount_enumerate, |
c6918296 MS |
1991 | .shutdown = mount_shutdown, |
1992 | ||
1993 | .status_message_formats = { | |
1994 | .starting_stopping = { | |
1995 | [0] = "Mounting %s...", | |
1996 | [1] = "Unmounting %s...", | |
1997 | }, | |
1998 | .finished_start_job = { | |
1999 | [JOB_DONE] = "Mounted %s.", | |
2000 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2001 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2002 | }, | |
2003 | .finished_stop_job = { | |
2004 | [JOB_DONE] = "Unmounted %s.", | |
2005 | [JOB_FAILED] = "Failed unmounting %s.", | |
2006 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2007 | }, | |
2008 | }, | |
5cb5a6ff | 2009 | }; |