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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
4f5dd394 | 4 | #include <signal.h> |
b08d03ff | 5 | #include <stdio.h> |
ef734fd6 | 6 | #include <sys/epoll.h> |
5cb5a6ff | 7 | |
20ad4cfd | 8 | #include "sd-messages.h" |
4f5dd394 | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
4139c1b2 | 11 | #include "dbus-mount.h" |
6fcbec6f | 12 | #include "dbus-unit.h" |
57b7a260 | 13 | #include "device.h" |
9a57c629 | 14 | #include "exit-status.h" |
f97b34a6 | 15 | #include "format-util.h" |
4f5dd394 | 16 | #include "fstab-util.h" |
fb36b133 | 17 | #include "libmount-util.h" |
4f5dd394 LP |
18 | #include "log.h" |
19 | #include "manager.h" | |
35cd0ba5 | 20 | #include "mkdir-label.h" |
4f5dd394 LP |
21 | #include "mount-setup.h" |
22 | #include "mount.h" | |
049af8ad | 23 | #include "mountpoint-util.h" |
6bedfcbb | 24 | #include "parse-util.h" |
4f5dd394 | 25 | #include "path-util.h" |
7b3e062c | 26 | #include "process-util.h" |
d68c645b | 27 | #include "serialize.h" |
4f5dd394 | 28 | #include "special.h" |
8b43440b | 29 | #include "string-table.h" |
b5efdb8a | 30 | #include "string-util.h" |
4f5dd394 LP |
31 | #include "strv.h" |
32 | #include "unit-name.h" | |
33 | #include "unit.h" | |
5cb5a6ff | 34 | |
7d54a03a LP |
35 | #define RETRY_UMOUNT_MAX 32 |
36 | ||
f50e0a01 LP |
37 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
38 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
39 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 40 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 41 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 42 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 43 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
44 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
45 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
46 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
47 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
17e9d53d YW |
48 | [MOUNT_FAILED] = UNIT_FAILED, |
49 | [MOUNT_CLEANING] = UNIT_MAINTENANCE, | |
f50e0a01 | 50 | }; |
5cb5a6ff | 51 | |
718db961 LP |
52 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
53 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
35080486 | 54 | static int mount_process_proc_self_mountinfo(Manager *m); |
718db961 | 55 | |
c634f3d2 LP |
56 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
57 | return IN_SET(state, | |
58 | MOUNT_MOUNTING, | |
59 | MOUNT_MOUNTING_DONE, | |
60 | MOUNT_REMOUNTING, | |
61 | MOUNT_REMOUNTING_SIGTERM, | |
62 | MOUNT_REMOUNTING_SIGKILL, | |
63 | MOUNT_UNMOUNTING, | |
64 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
65 | MOUNT_UNMOUNTING_SIGKILL, |
66 | MOUNT_CLEANING); | |
c634f3d2 LP |
67 | } |
68 | ||
47cd17ea LP |
69 | static MountParameters* get_mount_parameters_fragment(Mount *m) { |
70 | assert(m); | |
71 | ||
72 | if (m->from_fragment) | |
73 | return &m->parameters_fragment; | |
74 | ||
75 | return NULL; | |
76 | } | |
77 | ||
78 | static MountParameters* get_mount_parameters(Mount *m) { | |
79 | assert(m); | |
80 | ||
81 | if (m->from_proc_self_mountinfo) | |
82 | return &m->parameters_proc_self_mountinfo; | |
83 | ||
84 | return get_mount_parameters_fragment(m); | |
85 | } | |
86 | ||
7121cbcf LP |
87 | static bool mount_is_network(const MountParameters *p) { |
88 | assert(p); | |
89 | ||
90 | if (fstab_test_option(p->options, "_netdev\0")) | |
fc676b00 ZJS |
91 | return true; |
92 | ||
7121cbcf | 93 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
94 | return true; |
95 | ||
96 | return false; | |
97 | } | |
98 | ||
5a7c4f4f FB |
99 | static bool mount_is_nofail(const Mount *m) { |
100 | assert(m); | |
101 | ||
102 | if (!m->from_fragment) | |
103 | return false; | |
104 | ||
105 | return fstab_test_yes_no_option(m->parameters_fragment.options, "nofail\0" "fail\0"); | |
106 | } | |
107 | ||
d3bd0986 MK |
108 | static bool mount_is_loop(const MountParameters *p) { |
109 | assert(p); | |
110 | ||
111 | if (fstab_test_option(p->options, "loop\0")) | |
112 | return true; | |
113 | ||
114 | return false; | |
115 | } | |
116 | ||
e6a7b9f4 | 117 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
118 | assert(p); |
119 | ||
d15d0333 | 120 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
121 | return true; |
122 | ||
d15d0333 | 123 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
124 | return true; |
125 | ||
126 | return false; | |
127 | } | |
128 | ||
47cd17ea | 129 | static bool mount_is_bound_to_device(Mount *m) { |
ebc8968b FB |
130 | const MountParameters *p; |
131 | ||
47cd17ea LP |
132 | assert(m); |
133 | ||
134 | /* Determines whether to place a Requires= or BindsTo= dependency on the backing device unit. We do | |
135 | * this by checking for the x-systemd.device-bound mount option. Iff it is set we use BindsTo=, | |
136 | * otherwise Requires=. But note that we might combine the latter with StopPropagatedFrom=, see | |
137 | * below. */ | |
138 | ||
139 | p = get_mount_parameters(m); | |
140 | if (!p) | |
141 | return false; | |
ebc8968b | 142 | |
ebc8968b FB |
143 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); |
144 | } | |
145 | ||
47cd17ea LP |
146 | static bool mount_propagate_stop(Mount *m) { |
147 | assert(m); | |
148 | ||
149 | if (mount_is_bound_to_device(m)) /* If we are using BindsTo= the stop propagation is implicit, no need to bother */ | |
150 | return false; | |
151 | ||
152 | return m->from_fragment; /* let's propagate stop whenever this is an explicitly configured unit, | |
153 | * otherwise let's not bother. */ | |
154 | } | |
155 | ||
06e457b1 | 156 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
157 | assert(p); |
158 | ||
06e457b1 LP |
159 | /* Quotas are not enabled on network filesystems, but we want them, for example, on storage connected via |
160 | * iscsi. We hence don't use mount_is_network() here, as that would also return true for _netdev devices. */ | |
11041c84 | 161 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
162 | return false; |
163 | ||
164 | if (mount_is_bind(p)) | |
165 | return false; | |
166 | ||
d15d0333 ZJS |
167 | return fstab_test_option(p->options, |
168 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
169 | } |
170 | ||
a16e1123 LP |
171 | static void mount_init(Unit *u) { |
172 | Mount *m = MOUNT(u); | |
5cb5a6ff | 173 | |
c73f413d | 174 | assert(m); |
a16e1123 | 175 | assert(u); |
ac155bb8 | 176 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 177 | |
1f19a534 | 178 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
179 | |
180 | m->exec_context.std_output = u->manager->default_std_output; | |
181 | m->exec_context.std_error = u->manager->default_std_error; | |
182 | ||
3e5235b0 LP |
183 | m->directory_mode = 0755; |
184 | ||
f00929ad DJL |
185 | /* We need to make sure that /usr/bin/mount is always called |
186 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
187 | * side doesn't send us another mount request while we are |
188 | * already trying to comply its last one. */ | |
74922904 | 189 | m->exec_context.same_pgrp = true; |
8d567588 | 190 | |
a16e1123 | 191 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 192 | |
5bcb0f2b | 193 | u->ignore_on_isolate = true; |
8d567588 LP |
194 | } |
195 | ||
36c16a7c | 196 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
197 | int r; |
198 | ||
199 | assert(m); | |
200 | ||
718db961 | 201 | if (m->timer_event_source) { |
36c16a7c | 202 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
203 | if (r < 0) |
204 | return r; | |
205 | ||
206 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
207 | } | |
208 | ||
36c16a7c LP |
209 | if (usec == USEC_INFINITY) |
210 | return 0; | |
211 | ||
7dfbe2e3 | 212 | r = sd_event_add_time( |
6a0f1f6d LP |
213 | UNIT(m)->manager->event, |
214 | &m->timer_event_source, | |
215 | CLOCK_MONOTONIC, | |
36c16a7c | 216 | usec, 0, |
6a0f1f6d | 217 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
218 | if (r < 0) |
219 | return r; | |
220 | ||
221 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
222 | ||
223 | return 0; | |
718db961 LP |
224 | } |
225 | ||
a16e1123 | 226 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
227 | assert(m); |
228 | ||
229 | if (m->control_pid <= 0) | |
230 | return; | |
231 | ||
8f03de53 | 232 | unit_unwatch_pid(UNIT(m), TAKE_PID(m->control_pid)); |
5e94833f LP |
233 | } |
234 | ||
e537352b LP |
235 | static void mount_parameters_done(MountParameters *p) { |
236 | assert(p); | |
237 | ||
a26592cf LP |
238 | p->what = mfree(p->what); |
239 | p->options = mfree(p->options); | |
240 | p->fstype = mfree(p->fstype); | |
e537352b LP |
241 | } |
242 | ||
87f0e418 | 243 | static void mount_done(Unit *u) { |
ef734fd6 | 244 | Mount *m = MOUNT(u); |
034c6ed7 | 245 | |
ef734fd6 | 246 | assert(m); |
034c6ed7 | 247 | |
a1e58e8e | 248 | m->where = mfree(m->where); |
f50e0a01 | 249 | |
e537352b LP |
250 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
251 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 252 | |
e8a565cb | 253 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
254 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
255 | m->control_command = NULL; | |
f50e0a01 | 256 | |
29206d46 LP |
257 | dynamic_creds_unref(&m->dynamic_creds); |
258 | ||
a16e1123 | 259 | mount_unwatch_control_pid(m); |
f50e0a01 | 260 | |
5dcadb4c | 261 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
f50e0a01 LP |
262 | } |
263 | ||
9ddaa3e4 | 264 | static int update_parameters_proc_self_mountinfo( |
b7bbf890 ZJS |
265 | Mount *m, |
266 | const char *what, | |
267 | const char *options, | |
268 | const char *fstype) { | |
269 | ||
270 | MountParameters *p; | |
271 | int r, q, w; | |
272 | ||
273 | p = &m->parameters_proc_self_mountinfo; | |
274 | ||
275 | r = free_and_strdup(&p->what, what); | |
276 | if (r < 0) | |
277 | return r; | |
278 | ||
279 | q = free_and_strdup(&p->options, options); | |
280 | if (q < 0) | |
281 | return q; | |
282 | ||
283 | w = free_and_strdup(&p->fstype, fstype); | |
284 | if (w < 0) | |
285 | return w; | |
286 | ||
287 | return r > 0 || q > 0 || w > 0; | |
288 | } | |
289 | ||
eef85c4a | 290 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 291 | MountParameters *pm; |
ac155bb8 | 292 | Unit *other; |
a57f7e2c | 293 | Set *s; |
b08d03ff LP |
294 | int r; |
295 | ||
6e2ef85b | 296 | assert(m); |
b08d03ff | 297 | |
a57f7e2c | 298 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
299 | _cleanup_free_ char *parent = NULL; |
300 | ||
301 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
302 | |
303 | parent = dirname_malloc(m->where); | |
304 | if (!parent) | |
305 | return -ENOMEM; | |
01f78473 | 306 | |
eef85c4a | 307 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 308 | if (r < 0) |
01f78473 | 309 | return r; |
4f0eedb7 | 310 | } |
01f78473 | 311 | |
eef85c4a LP |
312 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
313 | * or a loop mount) to be available. */ | |
a57f7e2c | 314 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
315 | if (pm && pm->what && |
316 | path_is_absolute(pm->what) && | |
d3bd0986 | 317 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 318 | |
eef85c4a | 319 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 320 | if (r < 0) |
6e2ef85b | 321 | return r; |
4f0eedb7 | 322 | } |
b08d03ff | 323 | |
eef85c4a | 324 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c | 325 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
90e74a66 | 326 | SET_FOREACH(other, s) { |
b08d03ff | 327 | |
a57f7e2c LP |
328 | if (other->load_state != UNIT_LOADED) |
329 | continue; | |
b08d03ff | 330 | |
a57f7e2c LP |
331 | if (other == UNIT(m)) |
332 | continue; | |
b08d03ff | 333 | |
eef85c4a | 334 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 335 | if (r < 0) |
6e2ef85b | 336 | return r; |
b08d03ff | 337 | |
a57f7e2c LP |
338 | if (UNIT(m)->fragment_path) { |
339 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 340 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
341 | if (r < 0) |
342 | return r; | |
343 | } | |
7c8fa05c LP |
344 | } |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
eef85c4a | 349 | static int mount_add_device_dependencies(Mount *m) { |
eef85c4a LP |
350 | UnitDependencyMask mask; |
351 | MountParameters *p; | |
ebc8968b | 352 | UnitDependency dep; |
9fff8a1f | 353 | int r; |
173a8d04 LP |
354 | |
355 | assert(m); | |
356 | ||
556b6f4e DDM |
357 | log_unit_trace(UNIT(m), "Processing implicit device dependencies"); |
358 | ||
06e97888 | 359 | p = get_mount_parameters(m); |
556b6f4e DDM |
360 | if (!p) { |
361 | log_unit_trace(UNIT(m), "Missing mount parameters, skipping implicit device dependencies"); | |
173a8d04 | 362 | return 0; |
556b6f4e | 363 | } |
173a8d04 | 364 | |
556b6f4e DDM |
365 | if (!p->what) { |
366 | log_unit_trace(UNIT(m), "Missing mount source, skipping implicit device dependencies"); | |
173a8d04 | 367 | return 0; |
556b6f4e | 368 | } |
5c78d8e2 | 369 | |
556b6f4e DDM |
370 | if (mount_is_bind(p)) { |
371 | log_unit_trace(UNIT(m), "Mount unit is a bind mount, skipping implicit device dependencies"); | |
dd144c63 | 372 | return 0; |
556b6f4e | 373 | } |
dd144c63 | 374 | |
556b6f4e DDM |
375 | if (!is_device_path(p->what)) { |
376 | log_unit_trace(UNIT(m), "Mount source is not a device path, skipping implicit device dependencies"); | |
dd144c63 | 377 | return 0; |
556b6f4e | 378 | } |
dd144c63 | 379 | |
5de0acf4 LP |
380 | /* /dev/root is a really weird thing, it's not a real device, but just a path the kernel exports for |
381 | * the root file system specified on the kernel command line. Ignore it here. */ | |
556b6f4e DDM |
382 | if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs")) { |
383 | log_unit_trace(UNIT(m), "Mount source is in /dev/root or /dev/nfs, skipping implicit device dependencies"); | |
7ba2711d | 384 | return 0; |
556b6f4e | 385 | } |
7ba2711d | 386 | |
556b6f4e DDM |
387 | if (path_equal(m->where, "/")) { |
388 | log_unit_trace(UNIT(m), "Mount destination is '/', skipping implicit device dependencies"); | |
dd144c63 | 389 | return 0; |
556b6f4e | 390 | } |
dd144c63 | 391 | |
44b0d1fd | 392 | /* Mount units from /proc/self/mountinfo are not bound to devices by default since they're subject to |
47cd17ea LP |
393 | * races when mounts are established by other tools with different backing devices than what we |
394 | * maintain. The user can still force this to be a BindsTo= dependency with an appropriate option (or | |
395 | * udev property) so the mount units are automatically stopped when the device disappears | |
44b0d1fd | 396 | * suddenly. */ |
ebc8968b FB |
397 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; |
398 | ||
c52c2dc6 ZJS |
399 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
400 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT : UNIT_DEPENDENCY_FILE; | |
eef85c4a | 401 | |
d336ba9f | 402 | r = unit_add_node_dependency(UNIT(m), p->what, dep, mask); |
dd144c63 LP |
403 | if (r < 0) |
404 | return r; | |
556b6f4e DDM |
405 | if (r > 0) |
406 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(dep), p->what); | |
407 | ||
47cd17ea LP |
408 | if (mount_propagate_stop(m)) { |
409 | r = unit_add_node_dependency(UNIT(m), p->what, UNIT_STOP_PROPAGATED_FROM, mask); | |
410 | if (r < 0) | |
411 | return r; | |
556b6f4e DDM |
412 | if (r > 0) |
413 | log_unit_trace(UNIT(m), "Added %s dependency on %s", | |
414 | unit_dependency_to_string(UNIT_STOP_PROPAGATED_FROM), p->what); | |
47cd17ea | 415 | } |
9fff8a1f | 416 | |
556b6f4e DDM |
417 | r = unit_add_blockdev_dependency(UNIT(m), p->what, mask); |
418 | if (r > 0) | |
419 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(UNIT_AFTER), p->what); | |
420 | ||
421 | return r; | |
173a8d04 LP |
422 | } |
423 | ||
eef85c4a LP |
424 | static int mount_add_quota_dependencies(Mount *m) { |
425 | UnitDependencyMask mask; | |
6b1dc2bd | 426 | MountParameters *p; |
eef85c4a | 427 | int r; |
6b1dc2bd LP |
428 | |
429 | assert(m); | |
430 | ||
463d0d15 | 431 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
432 | return 0; |
433 | ||
434 | p = get_mount_parameters_fragment(m); | |
435 | if (!p) | |
436 | return 0; | |
437 | ||
06e457b1 | 438 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
439 | return 0; |
440 | ||
eef85c4a LP |
441 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
442 | ||
5a724170 | 443 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
444 | if (r < 0) |
445 | return r; | |
446 | ||
5a724170 | 447 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
448 | if (r < 0) |
449 | return r; | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
39c79477 | 454 | static bool mount_is_extrinsic(Unit *u) { |
88ac30a1 | 455 | MountParameters *p; |
39c79477 | 456 | Mount *m = MOUNT(u); |
ad2706db | 457 | assert(m); |
88ac30a1 | 458 | |
bc9e5a4c FB |
459 | /* Returns true for all units that are "magic" and should be excluded from the usual |
460 | * start-up and shutdown dependencies. We call them "extrinsic" here, as they are generally | |
461 | * mounted outside of the systemd dependency logic. We shouldn't attempt to manage them | |
462 | * ourselves but it's fine if the user operates on them with us. */ | |
ad2706db | 463 | |
bc9e5a4c | 464 | /* We only automatically manage mounts if we are in system mode */ |
39c79477 | 465 | if (MANAGER_IS_USER(u->manager)) |
b8e5776d LP |
466 | return true; |
467 | ||
88ac30a1 | 468 | p = get_mount_parameters(m); |
bc9e5a4c | 469 | if (p && fstab_is_extrinsic(m->where, p->options)) |
ad2706db | 470 | return true; |
88ac30a1 | 471 | |
ad2706db | 472 | return false; |
88ac30a1 TG |
473 | } |
474 | ||
61154cf9 FB |
475 | static int mount_add_default_ordering_dependencies( |
476 | Mount *m, | |
477 | MountParameters *p, | |
478 | UnitDependencyMask mask) { | |
479 | ||
83cdc870 | 480 | const char *after, *before, *e; |
d54bab90 | 481 | int r; |
2edd4434 LP |
482 | |
483 | assert(m); | |
484 | ||
83cdc870 FB |
485 | e = path_startswith(m->where, "/sysroot"); |
486 | if (e && in_initrd()) { | |
487 | /* All mounts under /sysroot need to happen later, at initrd-fs.target time. IOW, | |
488 | * it's not technically part of the basic initrd filesystem itself, and so | |
489 | * shouldn't inherit the default Before=local-fs.target dependency. */ | |
490 | ||
491 | after = NULL; | |
492 | before = isempty(e) ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_INITRD_FS_TARGET; | |
493 | ||
494 | } else if (mount_is_network(p)) { | |
ea0ec5ce | 495 | after = SPECIAL_REMOTE_FS_PRE_TARGET; |
d54bab90 | 496 | before = SPECIAL_REMOTE_FS_TARGET; |
2ec15c4f | 497 | |
d54bab90 | 498 | } else { |
ea0ec5ce | 499 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
500 | before = SPECIAL_LOCAL_FS_TARGET; |
501 | } | |
502 | ||
195baa1b | 503 | if (!mount_is_nofail(m)) { |
8c8203db YW |
504 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, true, mask); |
505 | if (r < 0) | |
506 | return r; | |
507 | } | |
ea0ec5ce | 508 | |
83cdc870 FB |
509 | if (after) { |
510 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); | |
511 | if (r < 0) | |
512 | return r; | |
513 | } | |
e8d2f6cd | 514 | |
61154cf9 FB |
515 | return unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, |
516 | SPECIAL_UMOUNT_TARGET, true, mask); | |
517 | } | |
518 | ||
2edd4434 | 519 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a | 520 | UnitDependencyMask mask; |
9ddc4a26 | 521 | MountParameters *p; |
d54bab90 | 522 | int r; |
2edd4434 LP |
523 | |
524 | assert(m); | |
525 | ||
4c9ea260 LP |
526 | if (!UNIT(m)->default_dependencies) |
527 | return 0; | |
528 | ||
61154cf9 FB |
529 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are |
530 | * guaranteed to stay mounted the whole time, since our system is on it. Also, don't | |
531 | * bother with anything mounted below virtual file systems, it's also going to be virtual, | |
532 | * and hence not worth the effort. */ | |
39c79477 | 533 | if (mount_is_extrinsic(UNIT(m))) |
6b1dc2bd | 534 | return 0; |
2edd4434 | 535 | |
874d3404 LP |
536 | p = get_mount_parameters(m); |
537 | if (!p) | |
6b1dc2bd LP |
538 | return 0; |
539 | ||
eef85c4a | 540 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
61154cf9 FB |
541 | |
542 | r = mount_add_default_ordering_dependencies(m, p, mask); | |
ad2706db LP |
543 | if (r < 0) |
544 | return r; | |
eef85c4a | 545 | |
e8d2f6cd | 546 | if (mount_is_network(p)) { |
2ec15c4f FB |
547 | /* We order ourselves after network.target. This is primarily useful at shutdown: |
548 | * services that take down the network should order themselves before | |
549 | * network.target, so that they are shut down only after this mount unit is | |
550 | * stopped. */ | |
6b1dc2bd | 551 | |
35d8c19a | 552 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
553 | if (r < 0) |
554 | return r; | |
a63a5c46 | 555 | |
2ec15c4f FB |
556 | /* We pull in network-online.target, and order ourselves after it. This is useful |
557 | * at start-up to actively pull in tools that want to be started before we start | |
558 | * mounting network file systems, and whose purpose it is to delay this until the | |
559 | * network is "up". */ | |
ea0ec5ce | 560 | |
5a724170 | 561 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
562 | if (r < 0) |
563 | return r; | |
d54bab90 LP |
564 | } |
565 | ||
3e3852b3 | 566 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 567 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 568 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
569 | if (r < 0) |
570 | return r; | |
571 | } | |
572 | ||
2edd4434 LP |
573 | return 0; |
574 | } | |
575 | ||
8d567588 | 576 | static int mount_verify(Mount *m) { |
a57f7e2c | 577 | _cleanup_free_ char *e = NULL; |
b294b79f | 578 | MountParameters *p; |
7410616c | 579 | int r; |
a57f7e2c | 580 | |
8d567588 | 581 | assert(m); |
75193d41 | 582 | assert(UNIT(m)->load_state == UNIT_LOADED); |
8d567588 | 583 | |
1df96fcb | 584 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
585 | return -ENOENT; |
586 | ||
7410616c LP |
587 | r = unit_name_from_path(m->where, ".mount", &e); |
588 | if (r < 0) | |
f2341e0a | 589 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 590 | |
d85ff944 YW |
591 | if (!unit_has_name(UNIT(m), e)) |
592 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Where= setting doesn't match unit name. Refusing."); | |
8d567588 | 593 | |
d85ff944 YW |
594 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) |
595 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Cannot create mount unit for API file system %s. Refusing.", m->where); | |
33ff02c9 | 596 | |
b294b79f | 597 | p = get_mount_parameters_fragment(m); |
0879fbd6 LP |
598 | if (p && !p->what && !UNIT(m)->perpetual) |
599 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), | |
600 | "What= setting is missing. Refusing."); | |
4e85aff4 | 601 | |
d85ff944 YW |
602 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) |
603 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); | |
4d0e5dbd | 604 | |
8d567588 LP |
605 | return 0; |
606 | } | |
607 | ||
bf7eedbf LP |
608 | static int mount_add_non_exec_dependencies(Mount *m) { |
609 | int r; | |
610 | assert(m); | |
611 | ||
612 | /* Adds in all dependencies directly responsible for ordering the mount, as opposed to dependencies | |
613 | * resulting from the ExecContext and such. */ | |
614 | ||
615 | r = mount_add_device_dependencies(m); | |
616 | if (r < 0) | |
617 | return r; | |
618 | ||
619 | r = mount_add_mount_dependencies(m); | |
620 | if (r < 0) | |
621 | return r; | |
622 | ||
623 | r = mount_add_quota_dependencies(m); | |
624 | if (r < 0) | |
625 | return r; | |
626 | ||
627 | r = mount_add_default_dependencies(m); | |
628 | if (r < 0) | |
629 | return r; | |
630 | ||
631 | return 0; | |
632 | } | |
633 | ||
1a4ac875 MS |
634 | static int mount_add_extras(Mount *m) { |
635 | Unit *u = UNIT(m); | |
e537352b LP |
636 | int r; |
637 | ||
e821075a LP |
638 | assert(m); |
639 | ||
1f736476 LP |
640 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
641 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
642 | * to run with an already set up unit. */ | |
643 | ||
e821075a | 644 | if (u->fragment_path) |
1a4ac875 | 645 | m->from_fragment = true; |
e537352b | 646 | |
1a4ac875 | 647 | if (!m->where) { |
7410616c | 648 | r = unit_name_to_path(u->id, &m->where); |
1d0727e7 MS |
649 | if (r == -ENAMETOOLONG) |
650 | log_unit_error_errno(u, r, "Failed to derive mount point path from unit name, because unit name is hashed. " | |
651 | "Set \"Where=\" in the unit file explicitly."); | |
7410616c LP |
652 | if (r < 0) |
653 | return r; | |
1a4ac875 | 654 | } |
a16e1123 | 655 | |
4ff361cc | 656 | path_simplify(m->where); |
e537352b | 657 | |
e821075a | 658 | if (!u->description) { |
1a4ac875 MS |
659 | r = unit_set_description(u, m->where); |
660 | if (r < 0) | |
173a8d04 | 661 | return r; |
1a4ac875 | 662 | } |
6e2ef85b | 663 | |
598459ce LP |
664 | r = unit_patch_contexts(u); |
665 | if (r < 0) | |
666 | return r; | |
4e67ddd6 | 667 | |
598459ce | 668 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
669 | if (r < 0) |
670 | return r; | |
671 | ||
d79200e2 | 672 | r = unit_set_default_slice(u); |
1a4ac875 MS |
673 | if (r < 0) |
674 | return r; | |
675 | ||
bf7eedbf | 676 | r = mount_add_non_exec_dependencies(m); |
4c9ea260 LP |
677 | if (r < 0) |
678 | return r; | |
598459ce | 679 | |
1a4ac875 MS |
680 | return 0; |
681 | } | |
682 | ||
75193d41 | 683 | static void mount_load_root_mount(Unit *u) { |
11222d0f LP |
684 | assert(u); |
685 | ||
686 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
75193d41 | 687 | return; |
11222d0f LP |
688 | |
689 | u->perpetual = true; | |
690 | u->default_dependencies = false; | |
691 | ||
692 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
693 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
694 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
695 | ||
696 | if (!u->description) | |
697 | u->description = strdup("Root Mount"); | |
11222d0f LP |
698 | } |
699 | ||
1a4ac875 MS |
700 | static int mount_load(Unit *u) { |
701 | Mount *m = MOUNT(u); | |
75193d41 | 702 | int r, q = 0; |
1a4ac875 | 703 | |
c73f413d | 704 | assert(m); |
1a4ac875 MS |
705 | assert(u); |
706 | assert(u->load_state == UNIT_STUB); | |
707 | ||
75193d41 | 708 | mount_load_root_mount(u); |
11222d0f | 709 | |
c3620770 | 710 | bool fragment_optional = m->from_proc_self_mountinfo || u->perpetual; |
75193d41 | 711 | r = unit_load_fragment_and_dropin(u, !fragment_optional); |
780ae022 LP |
712 | |
713 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
714 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
715 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
716 | * 'slice' field for a unit once it is active. */ | |
717 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
75193d41 | 718 | q = mount_add_extras(m); |
780ae022 | 719 | |
1a4ac875 MS |
720 | if (r < 0) |
721 | return r; | |
780ae022 LP |
722 | if (q < 0) |
723 | return q; | |
75193d41 ZJS |
724 | if (u->load_state != UNIT_LOADED) |
725 | return 0; | |
e537352b | 726 | |
8d567588 | 727 | return mount_verify(m); |
e537352b LP |
728 | } |
729 | ||
730 | static void mount_set_state(Mount *m, MountState state) { | |
731 | MountState old_state; | |
732 | assert(m); | |
733 | ||
6fcbec6f LP |
734 | if (m->state != state) |
735 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
736 | ||
e537352b LP |
737 | old_state = m->state; |
738 | m->state = state; | |
739 | ||
c634f3d2 | 740 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
5dcadb4c | 741 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
a16e1123 | 742 | mount_unwatch_control_pid(m); |
e537352b | 743 | m->control_command = NULL; |
a16e1123 | 744 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
745 | } |
746 | ||
747 | if (state != old_state) | |
f2341e0a | 748 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 749 | |
2ad2e41a LP |
750 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
751 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
752 | } |
753 | ||
be847e82 | 754 | static int mount_coldplug(Unit *u) { |
e537352b | 755 | Mount *m = MOUNT(u); |
a16e1123 LP |
756 | MountState new_state = MOUNT_DEAD; |
757 | int r; | |
e537352b LP |
758 | |
759 | assert(m); | |
760 | assert(m->state == MOUNT_DEAD); | |
761 | ||
a16e1123 LP |
762 | if (m->deserialized_state != m->state) |
763 | new_state = m->deserialized_state; | |
764 | else if (m->from_proc_self_mountinfo) | |
765 | new_state = MOUNT_MOUNTED; | |
e537352b | 766 | |
5bcb0f2b LP |
767 | if (new_state == m->state) |
768 | return 0; | |
e537352b | 769 | |
c386f588 LP |
770 | if (m->control_pid > 0 && |
771 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 772 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b | 773 | |
f75f613d | 774 | r = unit_watch_pid(UNIT(m), m->control_pid, false); |
5bcb0f2b LP |
775 | if (r < 0) |
776 | return r; | |
e537352b | 777 | |
36c16a7c | 778 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
779 | if (r < 0) |
780 | return r; | |
a16e1123 | 781 | } |
e537352b | 782 | |
e8a565cb | 783 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 784 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
785 | (void) unit_setup_exec_runtime(u); |
786 | } | |
29206d46 | 787 | |
5bcb0f2b | 788 | mount_set_state(m, new_state); |
e537352b | 789 | return 0; |
e537352b LP |
790 | } |
791 | ||
792 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
793 | Mount *m = MOUNT(u); | |
794 | MountParameters *p; | |
795 | ||
796 | assert(m); | |
797 | assert(f); | |
798 | ||
cb39ed3f | 799 | p = get_mount_parameters(m); |
e537352b LP |
800 | |
801 | fprintf(f, | |
802 | "%sMount State: %s\n" | |
81a5c6d0 | 803 | "%sResult: %s\n" |
17e9d53d | 804 | "%sClean Result: %s\n" |
e537352b LP |
805 | "%sWhere: %s\n" |
806 | "%sWhat: %s\n" | |
807 | "%sFile System Type: %s\n" | |
808 | "%sOptions: %s\n" | |
e537352b LP |
809 | "%sFrom /proc/self/mountinfo: %s\n" |
810 | "%sFrom fragment: %s\n" | |
ad2706db | 811 | "%sExtrinsic: %s\n" |
e520950a | 812 | "%sDirectoryMode: %04o\n" |
49915de2 | 813 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 814 | "%sLazyUnmount: %s\n" |
91899792 | 815 | "%sForceUnmount: %s\n" |
c600357b | 816 | "%sReadWriteOnly: %s\n" |
ac8956ef | 817 | "%sTimeoutSec: %s\n", |
a16e1123 | 818 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 819 | prefix, mount_result_to_string(m->result), |
17e9d53d | 820 | prefix, mount_result_to_string(m->clean_result), |
e537352b | 821 | prefix, m->where, |
1e4fc9b1 HH |
822 | prefix, p ? strna(p->what) : "n/a", |
823 | prefix, p ? strna(p->fstype) : "n/a", | |
824 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
825 | prefix, yes_no(m->from_proc_self_mountinfo), |
826 | prefix, yes_no(m->from_fragment), | |
39c79477 | 827 | prefix, yes_no(mount_is_extrinsic(u)), |
e520950a | 828 | prefix, m->directory_mode, |
49915de2 | 829 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 830 | prefix, yes_no(m->lazy_unmount), |
91899792 | 831 | prefix, yes_no(m->force_unmount), |
c600357b | 832 | prefix, yes_no(m->read_write_only), |
5291f26d | 833 | prefix, FORMAT_TIMESPAN(m->timeout_usec, USEC_PER_SEC)); |
e537352b LP |
834 | |
835 | if (m->control_pid > 0) | |
836 | fprintf(f, | |
ccd06097 ZJS |
837 | "%sControl PID: "PID_FMT"\n", |
838 | prefix, m->control_pid); | |
e537352b LP |
839 | |
840 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 841 | kill_context_dump(&m->kill_context, f, prefix); |
bc0623df | 842 | cgroup_context_dump(UNIT(m), f, prefix); |
e537352b LP |
843 | } |
844 | ||
a16e1123 | 845 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 846 | |
b9c04eaf | 847 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
848 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
849 | .stdin_fd = -1, | |
850 | .stdout_fd = -1, | |
851 | .stderr_fd = -1, | |
852 | .exec_fd = -1, | |
9fa95f85 | 853 | }; |
3c7416b6 LP |
854 | pid_t pid; |
855 | int r; | |
a16e1123 LP |
856 | |
857 | assert(m); | |
858 | assert(c); | |
859 | assert(_pid); | |
860 | ||
3c7416b6 | 861 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
862 | if (r < 0) |
863 | return r; | |
864 | ||
36c16a7c | 865 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 866 | if (r < 0) |
36c16a7c | 867 | return r; |
a16e1123 | 868 | |
1ad6e8b3 LP |
869 | r = unit_set_exec_params(UNIT(m), &exec_params); |
870 | if (r < 0) | |
871 | return r; | |
9fa95f85 | 872 | |
f2341e0a LP |
873 | r = exec_spawn(UNIT(m), |
874 | c, | |
4ad49000 | 875 | &m->exec_context, |
9fa95f85 | 876 | &exec_params, |
613b411c | 877 | m->exec_runtime, |
29206d46 | 878 | &m->dynamic_creds, |
4ad49000 LP |
879 | &pid); |
880 | if (r < 0) | |
36c16a7c | 881 | return r; |
a16e1123 | 882 | |
f75f613d | 883 | r = unit_watch_pid(UNIT(m), pid, true); |
4ad49000 | 884 | if (r < 0) |
36c16a7c | 885 | return r; |
a16e1123 LP |
886 | |
887 | *_pid = pid; | |
888 | ||
889 | return 0; | |
a16e1123 LP |
890 | } |
891 | ||
9d2f5178 | 892 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
893 | assert(m); |
894 | ||
a0fef983 | 895 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 896 | m->result = f; |
e537352b | 897 | |
aac99f30 | 898 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
4c425434 LP |
899 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_stop); |
900 | ||
29206d46 LP |
901 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
902 | ||
e8a565cb | 903 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 904 | |
bb0c0d6f | 905 | unit_destroy_runtime_data(UNIT(m), &m->exec_context); |
e66cf1a3 | 906 | |
00d9ef85 LP |
907 | unit_unref_uid_gid(UNIT(m), true); |
908 | ||
29206d46 | 909 | dynamic_creds_destroy(&m->dynamic_creds); |
c52c2dc6 ZJS |
910 | |
911 | /* Any dependencies based on /proc/self/mountinfo are now stale */ | |
912 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
e537352b LP |
913 | } |
914 | ||
9d2f5178 | 915 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
916 | assert(m); |
917 | ||
a0fef983 | 918 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 919 | m->result = f; |
80876c20 LP |
920 | |
921 | mount_set_state(m, MOUNT_MOUNTED); | |
922 | } | |
923 | ||
22af0e58 LP |
924 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
925 | assert(m); | |
926 | ||
927 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
928 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
929 | * ultimately we just mirror the kernel's internal state on this. */ | |
930 | ||
931 | if (m->from_proc_self_mountinfo) | |
932 | mount_enter_mounted(m, f); | |
933 | else | |
934 | mount_enter_dead(m, f); | |
935 | } | |
936 | ||
937 | static int state_to_kill_operation(MountState state) { | |
938 | switch (state) { | |
939 | ||
940 | case MOUNT_REMOUNTING_SIGTERM: | |
a232ebcc ZJS |
941 | return KILL_RESTART; |
942 | ||
22af0e58 LP |
943 | case MOUNT_UNMOUNTING_SIGTERM: |
944 | return KILL_TERMINATE; | |
945 | ||
946 | case MOUNT_REMOUNTING_SIGKILL: | |
947 | case MOUNT_UNMOUNTING_SIGKILL: | |
948 | return KILL_KILL; | |
949 | ||
950 | default: | |
951 | return _KILL_OPERATION_INVALID; | |
952 | } | |
953 | } | |
954 | ||
9d2f5178 | 955 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
956 | int r; |
957 | ||
958 | assert(m); | |
959 | ||
a0fef983 | 960 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 961 | m->result = f; |
e537352b | 962 | |
cd2086fe LP |
963 | r = unit_kill_context( |
964 | UNIT(m), | |
965 | &m->kill_context, | |
22af0e58 | 966 | state_to_kill_operation(state), |
cd2086fe LP |
967 | -1, |
968 | m->control_pid, | |
969 | false); | |
970 | if (r < 0) | |
971 | goto fail; | |
e537352b | 972 | |
cd2086fe | 973 | if (r > 0) { |
36c16a7c | 974 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 975 | if (r < 0) |
80876c20 | 976 | goto fail; |
e537352b | 977 | |
80876c20 | 978 | mount_set_state(m, state); |
22af0e58 | 979 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 980 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 981 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 982 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 983 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 984 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 985 | else |
22af0e58 | 986 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
987 | |
988 | return; | |
989 | ||
990 | fail: | |
f2341e0a | 991 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 992 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
993 | } |
994 | ||
9d2f5178 | 995 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
996 | int r; |
997 | ||
998 | assert(m); | |
999 | ||
7d54a03a LP |
1000 | /* Start counting our attempts */ |
1001 | if (!IN_SET(m->state, | |
1002 | MOUNT_UNMOUNTING, | |
1003 | MOUNT_UNMOUNTING_SIGTERM, | |
1004 | MOUNT_UNMOUNTING_SIGKILL)) | |
1005 | m->n_retry_umount = 0; | |
1006 | ||
a16e1123 LP |
1007 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
1008 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 1009 | |
83897d54 | 1010 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
1011 | if (r >= 0 && m->lazy_unmount) |
1012 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
1013 | if (r >= 0 && m->force_unmount) |
1014 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 1015 | if (r < 0) |
e537352b LP |
1016 | goto fail; |
1017 | ||
a16e1123 | 1018 | mount_unwatch_control_pid(m); |
5e94833f | 1019 | |
7d54a03a LP |
1020 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1021 | if (r < 0) | |
e537352b LP |
1022 | goto fail; |
1023 | ||
1024 | mount_set_state(m, MOUNT_UNMOUNTING); | |
1025 | ||
1026 | return; | |
1027 | ||
1028 | fail: | |
f2341e0a | 1029 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 1030 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1031 | } |
1032 | ||
8d567588 | 1033 | static void mount_enter_mounting(Mount *m) { |
e537352b | 1034 | int r; |
cb39ed3f | 1035 | MountParameters *p; |
e537352b LP |
1036 | |
1037 | assert(m); | |
1038 | ||
25cd4964 | 1039 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
1040 | if (r < 0) |
1041 | goto fail; | |
1042 | ||
1043 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 1044 | |
f2341e0a | 1045 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
4c425434 | 1046 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_start); |
a4634b21 LP |
1047 | |
1048 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
1049 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
1050 | ||
cb39ed3f | 1051 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 1052 | p = get_mount_parameters_fragment(m); |
5dc60faa AP |
1053 | if (p && mount_is_bind(p)) { |
1054 | r = mkdir_p_label(p->what, m->directory_mode); | |
237ecfee SA |
1055 | /* mkdir_p_label() can return -EEXIST if the target path exists and is not a directory - which is |
1056 | * totally OK, in case the user wants us to overmount a non-directory inode. */ | |
e4de58c8 | 1057 | if (r < 0 && r != -EEXIST) { |
5dc60faa | 1058 | log_unit_error_errno(UNIT(m), r, "Failed to make bind mount source '%s': %m", p->what); |
e4de58c8 YW |
1059 | goto fail; |
1060 | } | |
5dc60faa | 1061 | } |
5261ba90 | 1062 | |
b294b79f | 1063 | if (p) { |
17a1c597 ZJS |
1064 | _cleanup_free_ char *opts = NULL; |
1065 | ||
ff0c31bc | 1066 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, NULL, &opts); |
17a1c597 ZJS |
1067 | if (r < 0) |
1068 | goto fail; | |
1069 | ||
b294b79f | 1070 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
1071 | if (r >= 0 && m->sloppy_options) |
1072 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1073 | if (r >= 0 && m->read_write_only) |
1074 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1075 | if (r >= 0 && p->fstype) |
1076 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 1077 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 1078 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 1079 | } else |
e537352b | 1080 | r = -ENOENT; |
e537352b LP |
1081 | if (r < 0) |
1082 | goto fail; | |
1083 | ||
a16e1123 | 1084 | mount_unwatch_control_pid(m); |
5e94833f | 1085 | |
257f1d8e LP |
1086 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1087 | if (r < 0) | |
e537352b LP |
1088 | goto fail; |
1089 | ||
1090 | mount_set_state(m, MOUNT_MOUNTING); | |
1091 | ||
1092 | return; | |
1093 | ||
1094 | fail: | |
f2341e0a | 1095 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1096 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1097 | } |
1098 | ||
850b7410 LP |
1099 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1100 | assert(m); | |
1101 | ||
1102 | /* Only store the first error we encounter */ | |
1103 | if (m->reload_result != MOUNT_SUCCESS) | |
1104 | return; | |
1105 | ||
1106 | m->reload_result = result; | |
1107 | } | |
1108 | ||
9d2f5178 | 1109 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1110 | int r; |
b294b79f | 1111 | MountParameters *p; |
e537352b LP |
1112 | |
1113 | assert(m); | |
1114 | ||
850b7410 LP |
1115 | /* Reset reload result when we are about to start a new remount operation */ |
1116 | m->reload_result = MOUNT_SUCCESS; | |
1117 | ||
a16e1123 LP |
1118 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1119 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1120 | |
b294b79f MO |
1121 | p = get_mount_parameters_fragment(m); |
1122 | if (p) { | |
e537352b LP |
1123 | const char *o; |
1124 | ||
b294b79f MO |
1125 | if (p->options) |
1126 | o = strjoina("remount,", p->options); | |
718db961 | 1127 | else |
e537352b LP |
1128 | o = "remount"; |
1129 | ||
f00929ad | 1130 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1131 | p->what, m->where, |
e86b3761 | 1132 | "-o", o, NULL); |
e86b3761 ZJS |
1133 | if (r >= 0 && m->sloppy_options) |
1134 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1135 | if (r >= 0 && m->read_write_only) |
1136 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1137 | if (r >= 0 && p->fstype) |
1138 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1139 | } else |
e537352b | 1140 | r = -ENOENT; |
60b912f6 | 1141 | if (r < 0) |
e537352b | 1142 | goto fail; |
e537352b | 1143 | |
a16e1123 | 1144 | mount_unwatch_control_pid(m); |
5e94833f | 1145 | |
718db961 LP |
1146 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1147 | if (r < 0) | |
e537352b LP |
1148 | goto fail; |
1149 | ||
1150 | mount_set_state(m, MOUNT_REMOUNTING); | |
1151 | ||
1152 | return; | |
1153 | ||
1154 | fail: | |
f2341e0a | 1155 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1156 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1157 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1158 | } |
1159 | ||
7eba1463 LP |
1160 | static void mount_cycle_clear(Mount *m) { |
1161 | assert(m); | |
1162 | ||
1163 | /* Clear all state we shall forget for this new cycle */ | |
1164 | ||
1165 | m->result = MOUNT_SUCCESS; | |
1166 | m->reload_result = MOUNT_SUCCESS; | |
1167 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1168 | UNIT(m)->reset_accounting = true; | |
1169 | } | |
1170 | ||
e537352b LP |
1171 | static int mount_start(Unit *u) { |
1172 | Mount *m = MOUNT(u); | |
07299350 | 1173 | int r; |
e537352b LP |
1174 | |
1175 | assert(m); | |
1176 | ||
1177 | /* We cannot fulfill this request right now, try again later | |
1178 | * please! */ | |
f2aed307 LP |
1179 | if (IN_SET(m->state, |
1180 | MOUNT_UNMOUNTING, | |
1181 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
1182 | MOUNT_UNMOUNTING_SIGKILL, |
1183 | MOUNT_CLEANING)) | |
e537352b LP |
1184 | return -EAGAIN; |
1185 | ||
1186 | /* Already on it! */ | |
db39a627 | 1187 | if (IN_SET(m->state, MOUNT_MOUNTING, MOUNT_MOUNTING_DONE)) |
e537352b LP |
1188 | return 0; |
1189 | ||
f2aed307 | 1190 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1191 | |
4b58153d LP |
1192 | r = unit_acquire_invocation_id(u); |
1193 | if (r < 0) | |
1194 | return r; | |
1195 | ||
7eba1463 | 1196 | mount_cycle_clear(m); |
8d567588 | 1197 | mount_enter_mounting(m); |
7eba1463 | 1198 | |
82a2b6bb | 1199 | return 1; |
e537352b LP |
1200 | } |
1201 | ||
1202 | static int mount_stop(Unit *u) { | |
1203 | Mount *m = MOUNT(u); | |
1204 | ||
1205 | assert(m); | |
1206 | ||
22af0e58 LP |
1207 | switch (m->state) { |
1208 | ||
1209 | case MOUNT_UNMOUNTING: | |
1210 | case MOUNT_UNMOUNTING_SIGKILL: | |
1211 | case MOUNT_UNMOUNTING_SIGTERM: | |
1212 | /* Already on it */ | |
e537352b LP |
1213 | return 0; |
1214 | ||
22af0e58 LP |
1215 | case MOUNT_MOUNTING: |
1216 | case MOUNT_MOUNTING_DONE: | |
1217 | case MOUNT_REMOUNTING: | |
1218 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1219 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1220 | return 0; | |
e537352b | 1221 | |
22af0e58 LP |
1222 | case MOUNT_REMOUNTING_SIGTERM: |
1223 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1224 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1225 | return 0; | |
1226 | ||
1227 | case MOUNT_REMOUNTING_SIGKILL: | |
1228 | /* as above */ | |
1229 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1230 | return 0; | |
1231 | ||
1232 | case MOUNT_MOUNTED: | |
1233 | mount_enter_unmounting(m); | |
1234 | return 1; | |
1235 | ||
17e9d53d YW |
1236 | case MOUNT_CLEANING: |
1237 | /* If we are currently cleaning, then abort it, brutally. */ | |
1238 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
1239 | return 0; | |
1240 | ||
22af0e58 | 1241 | default: |
04499a70 | 1242 | assert_not_reached(); |
22af0e58 | 1243 | } |
e537352b LP |
1244 | } |
1245 | ||
1246 | static int mount_reload(Unit *u) { | |
1247 | Mount *m = MOUNT(u); | |
1248 | ||
1249 | assert(m); | |
e537352b LP |
1250 | assert(m->state == MOUNT_MOUNTED); |
1251 | ||
9d2f5178 | 1252 | mount_enter_remounting(m); |
22af0e58 | 1253 | |
2d018ae2 | 1254 | return 1; |
e537352b LP |
1255 | } |
1256 | ||
a16e1123 LP |
1257 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1258 | Mount *m = MOUNT(u); | |
1259 | ||
1260 | assert(m); | |
1261 | assert(f); | |
1262 | assert(fds); | |
1263 | ||
d68c645b LP |
1264 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1265 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1266 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1267 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1268 | |
1269 | if (m->control_pid > 0) | |
d68c645b | 1270 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1271 | |
1272 | if (m->control_command_id >= 0) | |
d68c645b | 1273 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1274 | |
1275 | return 0; | |
1276 | } | |
1277 | ||
1278 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1279 | Mount *m = MOUNT(u); | |
2c09fb81 | 1280 | int r; |
a16e1123 | 1281 | |
c73f413d | 1282 | assert(m); |
a16e1123 LP |
1283 | assert(u); |
1284 | assert(key); | |
1285 | assert(value); | |
1286 | assert(fds); | |
1287 | ||
1288 | if (streq(key, "state")) { | |
1289 | MountState state; | |
1290 | ||
7fb1d980 YW |
1291 | state = mount_state_from_string(value); |
1292 | if (state < 0) | |
1293 | log_unit_debug_errno(u, state, "Failed to parse state value: %s", value); | |
a16e1123 LP |
1294 | else |
1295 | m->deserialized_state = state; | |
2c09fb81 | 1296 | |
9d2f5178 LP |
1297 | } else if (streq(key, "result")) { |
1298 | MountResult f; | |
a16e1123 | 1299 | |
9d2f5178 LP |
1300 | f = mount_result_from_string(value); |
1301 | if (f < 0) | |
7fb1d980 | 1302 | log_unit_debug_errno(u, f, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1303 | else if (f != MOUNT_SUCCESS) |
1304 | m->result = f; | |
1305 | ||
1306 | } else if (streq(key, "reload-result")) { | |
1307 | MountResult f; | |
1308 | ||
1309 | f = mount_result_from_string(value); | |
1310 | if (f < 0) | |
7fb1d980 | 1311 | log_unit_debug_errno(u, f, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1312 | else if (f != MOUNT_SUCCESS) |
1313 | m->reload_result = f; | |
a16e1123 | 1314 | |
2c09fb81 LP |
1315 | } else if (streq(key, "n-retry-umount")) { |
1316 | ||
1317 | r = safe_atou(value, &m->n_retry_umount); | |
1318 | if (r < 0) | |
7fb1d980 | 1319 | log_unit_debug_errno(u, r, "Failed to parse n-retry-umount value: %s", value); |
2c09fb81 | 1320 | |
a16e1123 | 1321 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1322 | |
7fb1d980 YW |
1323 | r = parse_pid(value, &m->control_pid); |
1324 | if (r < 0) | |
1325 | log_unit_debug_errno(u, r, "Failed to parse control-pid value: %s", value); | |
3f459cd9 | 1326 | |
a16e1123 LP |
1327 | } else if (streq(key, "control-command")) { |
1328 | MountExecCommand id; | |
1329 | ||
f2341e0a LP |
1330 | id = mount_exec_command_from_string(value); |
1331 | if (id < 0) | |
7fb1d980 | 1332 | log_unit_debug_errno(u, id, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
1333 | else { |
1334 | m->control_command_id = id; | |
1335 | m->control_command = m->exec_command + id; | |
1336 | } | |
a16e1123 | 1337 | } else |
f2341e0a | 1338 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1339 | |
1340 | return 0; | |
1341 | } | |
1342 | ||
44a6b1b6 | 1343 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1344 | assert(u); |
1345 | ||
1346 | return state_translation_table[MOUNT(u)->state]; | |
1347 | } | |
1348 | ||
44a6b1b6 | 1349 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1350 | assert(u); |
1351 | ||
a16e1123 | 1352 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1353 | } |
1354 | ||
f2f725e5 | 1355 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1356 | Mount *m = MOUNT(u); |
1357 | ||
1358 | assert(m); | |
1359 | ||
f2f725e5 ZJS |
1360 | if (m->from_proc_self_mountinfo) |
1361 | return false; | |
1362 | ||
1363 | return true; | |
701cc384 LP |
1364 | } |
1365 | ||
e537352b LP |
1366 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1367 | Mount *m = MOUNT(u); | |
9d2f5178 | 1368 | MountResult f; |
e537352b LP |
1369 | |
1370 | assert(m); | |
1371 | assert(pid >= 0); | |
1372 | ||
8c47c732 LP |
1373 | if (pid != m->control_pid) |
1374 | return; | |
e537352b | 1375 | |
35080486 LP |
1376 | /* So here's the thing, we really want to know before /usr/bin/mount or /usr/bin/umount exit whether |
1377 | * they established/remove a mount. This is important when mounting, but even more so when unmounting | |
1378 | * since we need to deal with nested mounts and otherwise cannot safely determine whether to repeat | |
1379 | * the unmounts. In theory, the kernel fires /proc/self/mountinfo changes off before returning from | |
1380 | * the mount() or umount() syscalls, and thus we should see the changes to the proc file before we | |
1381 | * process the waitid() for the /usr/bin/(u)mount processes. However, this is unfortunately racy: we | |
1382 | * have to waitid() for processes using P_ALL (since we need to reap unexpected children that got | |
1383 | * reparented to PID 1), but when using P_ALL we might end up reaping processes that terminated just | |
1384 | * instants ago, i.e. already after our last event loop iteration (i.e. after the last point we might | |
1385 | * have noticed /proc/self/mountinfo events via epoll). This means event loop priorities for | |
1386 | * processing SIGCHLD vs. /proc/self/mountinfo IO events are not as relevant as we want. To fix that | |
1387 | * race, let's explicitly scan /proc/self/mountinfo before we start processing /usr/bin/(u)mount | |
1388 | * dying. It's ugly, but it makes our ordering systematic again, and makes sure we always see | |
1389 | * /proc/self/mountinfo changes before our mount/umount exits. */ | |
1390 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1391 | ||
e537352b LP |
1392 | m->control_pid = 0; |
1393 | ||
1f0958f6 | 1394 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1395 | f = MOUNT_SUCCESS; |
1396 | else if (code == CLD_EXITED) | |
1397 | f = MOUNT_FAILURE_EXIT_CODE; | |
1398 | else if (code == CLD_KILLED) | |
1399 | f = MOUNT_FAILURE_SIGNAL; | |
1400 | else if (code == CLD_DUMPED) | |
1401 | f = MOUNT_FAILURE_CORE_DUMP; | |
1402 | else | |
04499a70 | 1403 | assert_not_reached(); |
9d2f5178 | 1404 | |
850b7410 LP |
1405 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1406 | mount_set_reload_result(m, f); | |
1407 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1408 | m->result = f; |
8c47c732 | 1409 | |
a16e1123 | 1410 | if (m->control_command) { |
6ea832a2 | 1411 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1412 | |
a16e1123 LP |
1413 | m->control_command = NULL; |
1414 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1415 | } | |
1416 | ||
91bbd9b7 | 1417 | unit_log_process_exit( |
5cc2cd1c | 1418 | u, |
91bbd9b7 LP |
1419 | "Mount process", |
1420 | mount_exec_command_to_string(m->control_command_id), | |
5cc2cd1c | 1421 | f == MOUNT_SUCCESS, |
91bbd9b7 | 1422 | code, status); |
e537352b | 1423 | |
006aabbd AJ |
1424 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1425 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1426 | |
1427 | switch (m->state) { | |
1428 | ||
1429 | case MOUNT_MOUNTING: | |
006aabbd | 1430 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1431 | |
006aabbd AJ |
1432 | if (f == MOUNT_SUCCESS) { |
1433 | /* Either /bin/mount has an unexpected definition of success, | |
1434 | * or someone raced us and we lost. */ | |
1435 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1436 | f = MOUNT_FAILURE_PROTOCOL; | |
1437 | } | |
1438 | mount_enter_dead(m, f); | |
1439 | break; | |
1440 | ||
1441 | case MOUNT_MOUNTING_DONE: | |
1442 | mount_enter_mounted(m, f); | |
e537352b LP |
1443 | break; |
1444 | ||
e2f3b44c | 1445 | case MOUNT_REMOUNTING: |
e2f3b44c | 1446 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1447 | case MOUNT_REMOUNTING_SIGKILL: |
1448 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1449 | break; |
1450 | ||
e537352b | 1451 | case MOUNT_UNMOUNTING: |
e537352b | 1452 | |
3cc96856 | 1453 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1454 | |
1455 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1456 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1457 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1458 | |
1459 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1460 | log_unit_debug(u, "Mount still present, trying again."); | |
1461 | m->n_retry_umount++; | |
1462 | mount_enter_unmounting(m); | |
1463 | } else { | |
006aabbd | 1464 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1465 | mount_enter_mounted(m, f); |
1466 | } | |
1467 | } else | |
3cc96856 | 1468 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1469 | |
e537352b | 1470 | break; |
57018361 AJ |
1471 | |
1472 | case MOUNT_UNMOUNTING_SIGKILL: | |
1473 | case MOUNT_UNMOUNTING_SIGTERM: | |
1474 | mount_enter_dead_or_mounted(m, f); | |
1475 | break; | |
e537352b | 1476 | |
17e9d53d YW |
1477 | case MOUNT_CLEANING: |
1478 | if (m->clean_result == MOUNT_SUCCESS) | |
1479 | m->clean_result = f; | |
1480 | ||
1481 | mount_enter_dead(m, MOUNT_SUCCESS); | |
1482 | break; | |
1483 | ||
e537352b | 1484 | default: |
04499a70 | 1485 | assert_not_reached(); |
e537352b | 1486 | } |
c4e2ceae LP |
1487 | |
1488 | /* Notify clients about changed exit status */ | |
1489 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1490 | } |
1491 | ||
718db961 LP |
1492 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1493 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1494 | |
1495 | assert(m); | |
718db961 | 1496 | assert(m->timer_event_source == source); |
e537352b LP |
1497 | |
1498 | switch (m->state) { | |
1499 | ||
1500 | case MOUNT_MOUNTING: | |
1501 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1502 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1503 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1504 | break; |
1505 | ||
1506 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1507 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1508 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1509 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1510 | break; |
1511 | ||
22af0e58 LP |
1512 | case MOUNT_REMOUNTING_SIGTERM: |
1513 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1514 | |
4819ff03 | 1515 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1516 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1517 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1518 | } else { |
22af0e58 LP |
1519 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1520 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1521 | } |
e537352b LP |
1522 | break; |
1523 | ||
22af0e58 LP |
1524 | case MOUNT_REMOUNTING_SIGKILL: |
1525 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1526 | |
22af0e58 LP |
1527 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1528 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1529 | break; | |
1530 | ||
1531 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1532 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1533 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1534 | break; |
1535 | ||
1536 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1537 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1538 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1539 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1540 | } else { |
22af0e58 LP |
1541 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1542 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1543 | } |
e537352b LP |
1544 | break; |
1545 | ||
e537352b | 1546 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1547 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1548 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1549 | break; |
1550 | ||
17e9d53d YW |
1551 | case MOUNT_CLEANING: |
1552 | log_unit_warning(UNIT(m), "Cleaning timed out. killing."); | |
1553 | ||
1554 | if (m->clean_result == MOUNT_SUCCESS) | |
1555 | m->clean_result = MOUNT_FAILURE_TIMEOUT; | |
1556 | ||
1557 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, 0); | |
1558 | break; | |
1559 | ||
e537352b | 1560 | default: |
04499a70 | 1561 | assert_not_reached(); |
e537352b | 1562 | } |
718db961 LP |
1563 | |
1564 | return 0; | |
e537352b LP |
1565 | } |
1566 | ||
03b8cfed | 1567 | static int mount_setup_new_unit( |
839ee058 LP |
1568 | Manager *m, |
1569 | const char *name, | |
03b8cfed FB |
1570 | const char *what, |
1571 | const char *where, | |
1572 | const char *options, | |
1573 | const char *fstype, | |
ec88d1ea | 1574 | MountProcFlags *ret_flags, |
839ee058 | 1575 | Unit **ret) { |
03b8cfed | 1576 | |
839ee058 | 1577 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1578 | int r; |
03b8cfed | 1579 | |
839ee058 LP |
1580 | assert(m); |
1581 | assert(name); | |
ec88d1ea | 1582 | assert(ret_flags); |
839ee058 LP |
1583 | assert(ret); |
1584 | ||
1585 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1586 | if (r < 0) | |
1587 | return r; | |
03b8cfed | 1588 | |
e10fe042 LP |
1589 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1590 | if (r < 0) | |
1591 | return r; | |
03b8cfed | 1592 | |
e10fe042 LP |
1593 | r = free_and_strdup(&MOUNT(u)->where, where); |
1594 | if (r < 0) | |
1595 | return r; | |
03b8cfed | 1596 | |
9ddaa3e4 | 1597 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1598 | if (r < 0) |
1599 | return r; | |
03b8cfed | 1600 | |
aebff2e7 YW |
1601 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
1602 | if (r < 0) | |
1603 | return r; | |
1604 | ||
6d7e89b0 LP |
1605 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the time we load |
1606 | * the unit file for it (and thus add in extra deps right after) we know what source to attributes the deps | |
7802194a | 1607 | * to. */ |
6d7e89b0 LP |
1608 | MOUNT(u)->from_proc_self_mountinfo = true; |
1609 | ||
1610 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything else is | |
1611 | * loaded in now. */ | |
cfcd4318 | 1612 | unit_add_to_load_queue(u); |
26e35b16 | 1613 | |
ec88d1ea | 1614 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1615 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1616 | return 0; |
1617 | } | |
1618 | ||
1619 | static int mount_setup_existing_unit( | |
1620 | Unit *u, | |
1621 | const char *what, | |
1622 | const char *where, | |
1623 | const char *options, | |
1624 | const char *fstype, | |
ec88d1ea | 1625 | MountProcFlags *ret_flags) { |
03b8cfed | 1626 | |
bbee24bc | 1627 | int r; |
03b8cfed FB |
1628 | |
1629 | assert(u); | |
4bb68f2f | 1630 | assert(ret_flags); |
03b8cfed FB |
1631 | |
1632 | if (!MOUNT(u)->where) { | |
1633 | MOUNT(u)->where = strdup(where); | |
1634 | if (!MOUNT(u)->where) | |
1635 | return -ENOMEM; | |
1636 | } | |
1637 | ||
4bb68f2f LP |
1638 | /* In case we have multiple mounts established on the same mount point, let's merge flags set already |
1639 | * for the current unit. Note that the flags field is reset on each iteration of reading | |
1640 | * /proc/self/mountinfo, hence we know for sure anything already set here is from the current | |
1641 | * iteration and thus worthy of taking into account. */ | |
1642 | MountProcFlags flags = | |
1643 | MOUNT(u)->proc_flags | MOUNT_PROC_IS_MOUNTED; | |
1644 | ||
9ddaa3e4 | 1645 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1646 | if (r < 0) |
1647 | return r; | |
ec88d1ea LP |
1648 | if (r > 0) |
1649 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1650 | |
4bb68f2f LP |
1651 | /* There are two conditions when we consider a mount point just mounted: when we haven't seen it in |
1652 | * /proc/self/mountinfo before or when MOUNT_MOUNTING is our current state. Why bother with the | |
1653 | * latter? Shouldn't that be covered by the former? No, during reload it is not because we might then | |
1654 | * encounter a new /proc/self/mountinfo in combination with an old mount unit state (since it stems | |
1655 | * from the serialized state), and need to catch up. Since we know that the MOUNT_MOUNTING state is | |
1656 | * reached when we wait for the mount to appear we hence can assume that if we are in it, we are | |
1657 | * actually seeing it established for the first time. */ | |
1658 | if (!MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->state == MOUNT_MOUNTING) | |
ec88d1ea | 1659 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1660 | |
1661 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1662 | |
f8064c4f LP |
1663 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1664 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1665 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1666 | u->load_state = UNIT_LOADED; |
1667 | u->load_error = 0; | |
1668 | ||
ec88d1ea | 1669 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1670 | } |
1671 | ||
ec88d1ea | 1672 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1673 | /* If things changed, then make sure that all deps are regenerated. Let's |
1674 | * first remove all automatic deps, and then add in the new ones. */ | |
1675 | ||
1676 | unit_remove_dependencies(u, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
1677 | ||
bf7eedbf | 1678 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
a3742204 LP |
1679 | if (r < 0) |
1680 | return r; | |
1681 | } | |
03b8cfed | 1682 | |
ec88d1ea | 1683 | *ret_flags = flags; |
03b8cfed FB |
1684 | return 0; |
1685 | } | |
1686 | ||
628c89cc | 1687 | static int mount_setup_unit( |
e537352b LP |
1688 | Manager *m, |
1689 | const char *what, | |
1690 | const char *where, | |
1691 | const char *options, | |
1692 | const char *fstype, | |
e537352b | 1693 | bool set_flags) { |
057d9ab8 | 1694 | |
03b8cfed | 1695 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1696 | MountProcFlags flags; |
057d9ab8 LP |
1697 | Unit *u; |
1698 | int r; | |
b08d03ff | 1699 | |
f50e0a01 | 1700 | assert(m); |
b08d03ff LP |
1701 | assert(what); |
1702 | assert(where); | |
e537352b LP |
1703 | assert(options); |
1704 | assert(fstype); | |
1705 | ||
e537352b LP |
1706 | /* Ignore API mount points. They should never be referenced in |
1707 | * dependencies ever. */ | |
33ff02c9 | 1708 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1709 | return 0; |
b08d03ff | 1710 | |
8d567588 LP |
1711 | if (streq(fstype, "autofs")) |
1712 | return 0; | |
1713 | ||
4e85aff4 LP |
1714 | /* probably some kind of swap, ignore */ |
1715 | if (!is_path(where)) | |
b08d03ff LP |
1716 | return 0; |
1717 | ||
2c905207 LP |
1718 | /* Mount unit names have to be (like all other unit names) short enough to fit into file names. This |
1719 | * means there's a good chance that overly long mount point paths after mangling them to look like a | |
1720 | * unit name would result in unit names we don't actually consider valid. This should be OK however | |
1721 | * as such long mount point paths should not happen on regular systems — and if they appear | |
1722 | * nonetheless they are generally synthesized by software, and thus managed by that other | |
1723 | * software. Having such long names just means you cannot use systemd to manage those specific mount | |
1724 | * points, which should be an OK restriction to make. After all we don't have to be able to manage | |
1725 | * all mount points in the world — as long as we don't choke on them when we encounter them. */ | |
7410616c | 1726 | r = unit_name_from_path(where, ".mount", &e); |
2c905207 LP |
1727 | if (r < 0) { |
1728 | static RateLimit rate_limit = { /* Let's log about this at warning level at most once every | |
1729 | * 5s. Given that we generate this whenever we read the file | |
1730 | * otherwise we probably shouldn't flood the logs with | |
1731 | * this */ | |
1732 | .interval = 5 * USEC_PER_SEC, | |
1733 | .burst = 1, | |
1734 | }; | |
1735 | ||
3ebc9b9b LP |
1736 | if (r == -ENAMETOOLONG) |
1737 | return log_struct_errno( | |
1738 | ratelimit_below(&rate_limit) ? LOG_WARNING : LOG_DEBUG, r, | |
1739 | "MESSAGE_ID=" SD_MESSAGE_MOUNT_POINT_PATH_NOT_SUITABLE_STR, | |
1740 | "MOUNT_POINT=%s", where, | |
1741 | LOG_MESSAGE("Mount point path '%s' too long to fit into unit name, ignoring mount point.", where)); | |
1742 | ||
2c905207 LP |
1743 | return log_struct_errno( |
1744 | ratelimit_below(&rate_limit) ? LOG_WARNING : LOG_DEBUG, r, | |
1745 | "MESSAGE_ID=" SD_MESSAGE_MOUNT_POINT_PATH_NOT_SUITABLE_STR, | |
1746 | "MOUNT_POINT=%s", where, | |
3ebc9b9b | 1747 | LOG_MESSAGE("Failed to generate valid unit name from mount point path '%s', ignoring mount point: %m", where)); |
2c905207 | 1748 | } |
b08d03ff | 1749 | |
7d17cfbc | 1750 | u = manager_get_unit(m, e); |
839ee058 | 1751 | if (u) |
03b8cfed | 1752 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 LP |
1753 | else |
1754 | /* First time we see this mount point meaning that it's not been initiated by a mount unit but rather | |
1755 | * by the sysadmin having called mount(8) directly. */ | |
1756 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); | |
03b8cfed | 1757 | if (r < 0) |
2c905207 | 1758 | return log_warning_errno(r, "Failed to set up mount unit for '%s': %m", where); |
ff5f34d0 | 1759 | |
ec88d1ea LP |
1760 | /* If the mount changed properties or state, let's notify our clients */ |
1761 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1762 | unit_add_to_dbus_queue(u); |
c1e1601e | 1763 | |
ec88d1ea LP |
1764 | if (set_flags) |
1765 | MOUNT(u)->proc_flags = flags; | |
1766 | ||
b08d03ff | 1767 | return 0; |
b08d03ff LP |
1768 | } |
1769 | ||
ef734fd6 | 1770 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
13dcfe46 ZJS |
1771 | _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; |
1772 | _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; | |
ba0d56f5 | 1773 | int r; |
b08d03ff LP |
1774 | |
1775 | assert(m); | |
1776 | ||
e2857b3d | 1777 | r = libmount_parse(NULL, NULL, &table, &iter); |
5cca8def | 1778 | if (r < 0) |
628c89cc | 1779 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1780 | |
5cca8def | 1781 | for (;;) { |
95b862b0 | 1782 | struct libmnt_fs *fs; |
8d3ae2bd | 1783 | const char *device, *path, *options, *fstype; |
b08d03ff | 1784 | |
13dcfe46 ZJS |
1785 | r = mnt_table_next_fs(table, iter, &fs); |
1786 | if (r == 1) | |
5cca8def | 1787 | break; |
13dcfe46 ZJS |
1788 | if (r < 0) |
1789 | return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1790 | |
8d3ae2bd CL |
1791 | device = mnt_fs_get_source(fs); |
1792 | path = mnt_fs_get_target(fs); | |
1793 | options = mnt_fs_get_options(fs); | |
1794 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1795 | |
c0a7f8d3 DM |
1796 | if (!device || !path) |
1797 | continue; | |
1798 | ||
9d1b2b22 | 1799 | device_found_node(m, device, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1800 | |
9d1b2b22 | 1801 | (void) mount_setup_unit(m, device, path, options, fstype, set_flags); |
b08d03ff LP |
1802 | } |
1803 | ||
ba0d56f5 | 1804 | return 0; |
e537352b LP |
1805 | } |
1806 | ||
1807 | static void mount_shutdown(Manager *m) { | |
1808 | assert(m); | |
1809 | ||
5dcadb4c | 1810 | m->mount_event_source = sd_event_source_disable_unref(m->mount_event_source); |
718db961 | 1811 | |
d379d442 KZ |
1812 | mnt_unref_monitor(m->mount_monitor); |
1813 | m->mount_monitor = NULL; | |
b08d03ff LP |
1814 | } |
1815 | ||
7a7821c8 | 1816 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1817 | Mount *m = MOUNT(u); |
7a7821c8 | 1818 | usec_t t; |
68db7a3b ZJS |
1819 | int r; |
1820 | ||
c73f413d FS |
1821 | assert(m); |
1822 | assert(u); | |
1823 | ||
68db7a3b ZJS |
1824 | if (!m->timer_event_source) |
1825 | return 0; | |
1826 | ||
7a7821c8 | 1827 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1828 | if (r < 0) |
1829 | return r; | |
7a7821c8 LP |
1830 | if (t == USEC_INFINITY) |
1831 | return 0; | |
68db7a3b | 1832 | |
7a7821c8 | 1833 | *timeout = t; |
68db7a3b ZJS |
1834 | return 1; |
1835 | } | |
1836 | ||
04eb582a | 1837 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1838 | Unit *u; |
1839 | int r; | |
1840 | ||
1841 | assert(m); | |
1842 | ||
1843 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1844 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1845 | ||
1846 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1847 | if (!u) { | |
a581e45a | 1848 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1849 | if (r < 0) { |
1850 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1851 | return; | |
1852 | } | |
11222d0f LP |
1853 | } |
1854 | ||
1855 | u->perpetual = true; | |
1856 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1857 | ||
1858 | unit_add_to_load_queue(u); | |
1859 | unit_add_to_dbus_queue(u); | |
1860 | } | |
1861 | ||
1862 | static bool mount_is_mounted(Mount *m) { | |
1863 | assert(m); | |
1864 | ||
ec88d1ea | 1865 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1866 | } |
1867 | ||
edc027b4 MS |
1868 | static int mount_on_ratelimit_expire(sd_event_source *s, void *userdata) { |
1869 | Manager *m = userdata; | |
c29e6a95 | 1870 | Job *j; |
edc027b4 MS |
1871 | |
1872 | assert(m); | |
1873 | ||
c29e6a95 MS |
1874 | /* Let's enqueue all start jobs that were previously skipped because of active ratelimit. */ |
1875 | HASHMAP_FOREACH(j, m->jobs) { | |
1876 | if (j->unit->type != UNIT_MOUNT) | |
1877 | continue; | |
1878 | ||
1879 | job_add_to_run_queue(j); | |
1880 | } | |
1881 | ||
b0c4b282 LP |
1882 | /* By entering ratelimited state we made all mount start jobs not runnable, now rate limit is over so |
1883 | * let's make sure we dispatch them in the next iteration. */ | |
1884 | manager_trigger_run_queue(m); | |
edc027b4 MS |
1885 | |
1886 | return 0; | |
1887 | } | |
1888 | ||
ba64af90 | 1889 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1890 | int r; |
d379d442 | 1891 | |
b08d03ff LP |
1892 | assert(m); |
1893 | ||
8d3ae2bd CL |
1894 | mnt_init_debug(0); |
1895 | ||
d379d442 KZ |
1896 | if (!m->mount_monitor) { |
1897 | int fd; | |
ef734fd6 | 1898 | |
d379d442 KZ |
1899 | m->mount_monitor = mnt_new_monitor(); |
1900 | if (!m->mount_monitor) { | |
ba64af90 | 1901 | log_oom(); |
718db961 | 1902 | goto fail; |
d379d442 | 1903 | } |
29083707 | 1904 | |
d379d442 | 1905 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1906 | if (r < 0) { |
1907 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1908 | goto fail; |
ba64af90 LP |
1909 | } |
1910 | ||
d379d442 | 1911 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1912 | if (r < 0) { |
1913 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1914 | goto fail; |
ba64af90 | 1915 | } |
90598531 | 1916 | |
d379d442 KZ |
1917 | /* mnt_unref_monitor() will close the fd */ |
1918 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1919 | if (r < 0) { |
1920 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1921 | goto fail; |
ba64af90 | 1922 | } |
befb6d54 | 1923 | |
d379d442 | 1924 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1925 | if (r < 0) { |
1926 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1927 | goto fail; |
ba64af90 | 1928 | } |
befb6d54 | 1929 | |
83231637 | 1930 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1931 | if (r < 0) { |
1932 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1933 | goto fail; |
ba64af90 | 1934 | } |
7dfbe2e3 | 1935 | |
d586f642 MS |
1936 | r = sd_event_source_set_ratelimit(m->mount_event_source, 1 * USEC_PER_SEC, 5); |
1937 | if (r < 0) { | |
1938 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
1939 | goto fail; | |
1940 | } | |
1941 | ||
edc027b4 MS |
1942 | r = sd_event_source_set_ratelimit_expire_callback(m->mount_event_source, mount_on_ratelimit_expire); |
1943 | if (r < 0) { | |
1944 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
1945 | goto fail; | |
1946 | } | |
1947 | ||
d379d442 | 1948 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1949 | } |
1950 | ||
e62d8c39 ZJS |
1951 | r = mount_load_proc_self_mountinfo(m, false); |
1952 | if (r < 0) | |
b08d03ff LP |
1953 | goto fail; |
1954 | ||
ba64af90 | 1955 | return; |
b08d03ff LP |
1956 | |
1957 | fail: | |
1958 | mount_shutdown(m); | |
5cb5a6ff LP |
1959 | } |
1960 | ||
fcd8e119 LP |
1961 | static int drain_libmount(Manager *m) { |
1962 | bool rescan = false; | |
1963 | int r; | |
1964 | ||
1965 | assert(m); | |
1966 | ||
1967 | /* Drain all events and verify that the event is valid. | |
1968 | * | |
1969 | * Note that libmount also monitors /run/mount mkdir if the directory does not exist yet. The mkdir | |
1970 | * may generate event which is irrelevant for us. | |
1971 | * | |
1972 | * error: r < 0; valid: r == 0, false positive: r == 1 */ | |
1973 | do { | |
1974 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1975 | if (r < 0) | |
1976 | return log_error_errno(r, "Failed to drain libmount events: %m"); | |
1977 | if (r == 0) | |
1978 | rescan = true; | |
1979 | } while (r == 0); | |
1980 | ||
1981 | return rescan; | |
1982 | } | |
1983 | ||
35080486 | 1984 | static int mount_process_proc_self_mountinfo(Manager *m) { |
ec8126d7 | 1985 | _cleanup_set_free_free_ Set *around = NULL, *gone = NULL; |
ec8126d7 | 1986 | const char *what; |
ef734fd6 LP |
1987 | int r; |
1988 | ||
1989 | assert(m); | |
ef734fd6 | 1990 | |
fcd8e119 LP |
1991 | r = drain_libmount(m); |
1992 | if (r <= 0) | |
1993 | return r; | |
ef734fd6 | 1994 | |
4f0eedb7 ZJS |
1995 | r = mount_load_proc_self_mountinfo(m, true); |
1996 | if (r < 0) { | |
e537352b | 1997 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
1998 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
1999 | MOUNT(u)->proc_flags = 0; | |
e537352b | 2000 | |
ec8126d7 | 2001 | return 0; |
ef734fd6 LP |
2002 | } |
2003 | ||
2004 | manager_dispatch_load_queue(m); | |
2005 | ||
595ed347 MS |
2006 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
2007 | Mount *mount = MOUNT(u); | |
ef734fd6 | 2008 | |
11222d0f | 2009 | if (!mount_is_mounted(mount)) { |
e537352b | 2010 | |
394763f6 LP |
2011 | /* A mount point is not around right now. It |
2012 | * might be gone, or might never have | |
2013 | * existed. */ | |
2014 | ||
2015 | if (mount->from_proc_self_mountinfo && | |
2016 | mount->parameters_proc_self_mountinfo.what) { | |
2017 | ||
2018 | /* Remember that this device might just have disappeared */ | |
548f6937 | 2019 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
be327321 | 2020 | set_put_strdup(&gone, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 LP |
2021 | log_oom(); /* we don't care too much about OOM here... */ |
2022 | } | |
fcd8b266 | 2023 | |
ef734fd6 | 2024 | mount->from_proc_self_mountinfo = false; |
9ddaa3e4 | 2025 | assert_se(update_parameters_proc_self_mountinfo(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
2026 | |
2027 | switch (mount->state) { | |
2028 | ||
2029 | case MOUNT_MOUNTED: | |
7eba1463 | 2030 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 2031 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
2032 | break; |
2033 | ||
2fa0bd7d YW |
2034 | case MOUNT_MOUNTING_DONE: |
2035 | /* The mount command may add the corresponding proc mountinfo entry and | |
2036 | * then remove it because of an internal error. E.g., fuse.sshfs seems | |
2037 | * to do that when the connection fails. See #17617. To handle such the | |
2038 | * case, let's once set the state back to mounting. Then, the unit can | |
2039 | * correctly enter the failed state later in mount_sigchld(). */ | |
2040 | mount_set_state(mount, MOUNT_MOUNTING); | |
2041 | break; | |
2042 | ||
e537352b | 2043 | default: |
e537352b | 2044 | break; |
e537352b LP |
2045 | } |
2046 | ||
ec88d1ea | 2047 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 2048 | |
fcd8b266 | 2049 | /* A mount point was added or changed */ |
e537352b LP |
2050 | |
2051 | switch (mount->state) { | |
2052 | ||
2053 | case MOUNT_DEAD: | |
fdf20a31 | 2054 | case MOUNT_FAILED: |
4b58153d LP |
2055 | |
2056 | /* This has just been mounted by somebody else, follow the state change, but let's | |
2057 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
2058 | (void) unit_acquire_invocation_id(u); |
2059 | mount_cycle_clear(mount); | |
9d2f5178 | 2060 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
2061 | break; |
2062 | ||
2063 | case MOUNT_MOUNTING: | |
5bcb0f2b | 2064 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
2065 | break; |
2066 | ||
2067 | default: | |
2068 | /* Nothing really changed, but let's | |
2069 | * issue an notification call | |
2070 | * nonetheless, in case somebody is | |
2071 | * waiting for this. (e.g. file system | |
2072 | * ro/rw remounts.) */ | |
2073 | mount_set_state(mount, mount->state); | |
2074 | break; | |
2075 | } | |
394763f6 | 2076 | } |
fcd8b266 | 2077 | |
11222d0f | 2078 | if (mount_is_mounted(mount) && |
394763f6 LP |
2079 | mount->from_proc_self_mountinfo && |
2080 | mount->parameters_proc_self_mountinfo.what) { | |
b6418dc9 | 2081 | /* Track devices currently used */ |
fcd8b266 | 2082 | |
548f6937 | 2083 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
be327321 | 2084 | set_put_strdup(&around, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2085 | log_oom(); |
e537352b LP |
2086 | } |
2087 | ||
2088 | /* Reset the flags for later calls */ | |
ec88d1ea | 2089 | mount->proc_flags = 0; |
e537352b | 2090 | } |
718db961 | 2091 | |
90e74a66 | 2092 | SET_FOREACH(what, gone) { |
fcd8b266 LP |
2093 | if (set_contains(around, what)) |
2094 | continue; | |
2095 | ||
2096 | /* Let the device units know that the device is no longer mounted */ | |
b1ba0ce8 | 2097 | device_found_node(m, what, DEVICE_NOT_FOUND, DEVICE_FOUND_MOUNT); |
fcd8b266 | 2098 | } |
ec8126d7 ZJS |
2099 | |
2100 | return 0; | |
e537352b LP |
2101 | } |
2102 | ||
35080486 LP |
2103 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2104 | Manager *m = userdata; | |
2105 | ||
2106 | assert(m); | |
2107 | assert(revents & EPOLLIN); | |
2108 | ||
2109 | return mount_process_proc_self_mountinfo(m); | |
2110 | } | |
2111 | ||
fdf20a31 | 2112 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
2113 | Mount *m = MOUNT(u); |
2114 | ||
2115 | assert(m); | |
2116 | ||
fdf20a31 | 2117 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
2118 | mount_set_state(m, MOUNT_DEAD); |
2119 | ||
9d2f5178 LP |
2120 | m->result = MOUNT_SUCCESS; |
2121 | m->reload_result = MOUNT_SUCCESS; | |
17e9d53d | 2122 | m->clean_result = MOUNT_SUCCESS; |
5632e374 LP |
2123 | } |
2124 | ||
718db961 | 2125 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
2126 | Mount *m = MOUNT(u); |
2127 | ||
2128 | assert(m); | |
2129 | ||
ee36fed4 | 2130 | return unit_kill_common(u, who, signo, -1, m->control_pid, error); |
8a0867d6 LP |
2131 | } |
2132 | ||
291d565a LP |
2133 | static int mount_control_pid(Unit *u) { |
2134 | Mount *m = MOUNT(u); | |
2135 | ||
2136 | assert(m); | |
2137 | ||
2138 | return m->control_pid; | |
2139 | } | |
2140 | ||
17e9d53d YW |
2141 | static int mount_clean(Unit *u, ExecCleanMask mask) { |
2142 | _cleanup_strv_free_ char **l = NULL; | |
2143 | Mount *m = MOUNT(u); | |
2144 | int r; | |
2145 | ||
2146 | assert(m); | |
2147 | assert(mask != 0); | |
2148 | ||
2149 | if (m->state != MOUNT_DEAD) | |
2150 | return -EBUSY; | |
2151 | ||
2152 | r = exec_context_get_clean_directories(&m->exec_context, u->manager->prefix, mask, &l); | |
2153 | if (r < 0) | |
2154 | return r; | |
2155 | ||
2156 | if (strv_isempty(l)) | |
2157 | return -EUNATCH; | |
2158 | ||
2159 | mount_unwatch_control_pid(m); | |
2160 | m->clean_result = MOUNT_SUCCESS; | |
2161 | m->control_command = NULL; | |
2162 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
2163 | ||
2164 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->exec_context.timeout_clean_usec)); | |
2165 | if (r < 0) | |
2166 | goto fail; | |
2167 | ||
2168 | r = unit_fork_and_watch_rm_rf(u, l, &m->control_pid); | |
2169 | if (r < 0) | |
2170 | goto fail; | |
2171 | ||
2172 | mount_set_state(m, MOUNT_CLEANING); | |
2173 | ||
2174 | return 0; | |
2175 | ||
2176 | fail: | |
2177 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); | |
2178 | m->clean_result = MOUNT_FAILURE_RESOURCES; | |
5dcadb4c | 2179 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
17e9d53d YW |
2180 | return r; |
2181 | } | |
2182 | ||
2183 | static int mount_can_clean(Unit *u, ExecCleanMask *ret) { | |
2184 | Mount *m = MOUNT(u); | |
2185 | ||
2186 | assert(m); | |
2187 | ||
2188 | return exec_context_get_clean_mask(&m->exec_context, ret); | |
2189 | } | |
2190 | ||
705578c3 | 2191 | static int mount_can_start(Unit *u) { |
9727f242 DDM |
2192 | Mount *m = MOUNT(u); |
2193 | int r; | |
2194 | ||
2195 | assert(m); | |
2196 | ||
2197 | r = unit_test_start_limit(u); | |
2198 | if (r < 0) { | |
2199 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
2200 | return r; | |
2201 | } | |
2202 | ||
705578c3 | 2203 | return 1; |
9727f242 DDM |
2204 | } |
2205 | ||
a16e1123 | 2206 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
48d83e33 | 2207 | [MOUNT_EXEC_MOUNT] = "ExecMount", |
a16e1123 LP |
2208 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", |
2209 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
2210 | }; | |
2211 | ||
2212 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
2213 | ||
9d2f5178 | 2214 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
48d83e33 ZJS |
2215 | [MOUNT_SUCCESS] = "success", |
2216 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
2217 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
2218 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
2219 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
2220 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", | |
07299350 | 2221 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 | 2222 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
2223 | }; |
2224 | ||
2225 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
2226 | ||
87f0e418 | 2227 | const UnitVTable mount_vtable = { |
7d17cfbc | 2228 | .object_size = sizeof(Mount), |
718db961 LP |
2229 | .exec_context_offset = offsetof(Mount, exec_context), |
2230 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
2231 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 2232 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 2233 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 2234 | |
f975e971 LP |
2235 | .sections = |
2236 | "Unit\0" | |
2237 | "Mount\0" | |
2238 | "Install\0", | |
4ad49000 | 2239 | .private_section = "Mount", |
71645aca | 2240 | |
c80a9a33 LP |
2241 | .can_transient = true, |
2242 | .can_fail = true, | |
755021d4 | 2243 | .exclude_from_switch_root_serialization = true, |
c80a9a33 | 2244 | |
e537352b LP |
2245 | .init = mount_init, |
2246 | .load = mount_load, | |
034c6ed7 | 2247 | .done = mount_done, |
e537352b | 2248 | |
f50e0a01 LP |
2249 | .coldplug = mount_coldplug, |
2250 | ||
034c6ed7 | 2251 | .dump = mount_dump, |
5cb5a6ff | 2252 | |
e537352b LP |
2253 | .start = mount_start, |
2254 | .stop = mount_stop, | |
2255 | .reload = mount_reload, | |
2256 | ||
8a0867d6 | 2257 | .kill = mount_kill, |
17e9d53d YW |
2258 | .clean = mount_clean, |
2259 | .can_clean = mount_can_clean, | |
8a0867d6 | 2260 | |
a16e1123 LP |
2261 | .serialize = mount_serialize, |
2262 | .deserialize_item = mount_deserialize_item, | |
2263 | ||
f50e0a01 | 2264 | .active_state = mount_active_state, |
10a94420 | 2265 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2266 | |
52a12341 YW |
2267 | .will_restart = unit_will_restart_default, |
2268 | ||
f2f725e5 | 2269 | .may_gc = mount_may_gc, |
39c79477 | 2270 | .is_extrinsic = mount_is_extrinsic, |
701cc384 | 2271 | |
e537352b | 2272 | .sigchld_event = mount_sigchld_event, |
e537352b | 2273 | |
fdf20a31 | 2274 | .reset_failed = mount_reset_failed, |
291d565a LP |
2275 | |
2276 | .control_pid = mount_control_pid, | |
5632e374 | 2277 | |
74c964d3 LP |
2278 | .bus_set_property = bus_mount_set_property, |
2279 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2280 | |
68db7a3b ZJS |
2281 | .get_timeout = mount_get_timeout, |
2282 | ||
04eb582a | 2283 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2284 | .enumerate = mount_enumerate, |
c6918296 MS |
2285 | .shutdown = mount_shutdown, |
2286 | ||
2287 | .status_message_formats = { | |
2288 | .starting_stopping = { | |
2289 | [0] = "Mounting %s...", | |
2290 | [1] = "Unmounting %s...", | |
2291 | }, | |
2292 | .finished_start_job = { | |
2293 | [JOB_DONE] = "Mounted %s.", | |
2294 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2295 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2296 | }, | |
2297 | .finished_stop_job = { | |
2298 | [JOB_DONE] = "Unmounted %s.", | |
2299 | [JOB_FAILED] = "Failed unmounting %s.", | |
2300 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2301 | }, | |
2302 | }, | |
9727f242 | 2303 | |
705578c3 | 2304 | .can_start = mount_can_start, |
5cb5a6ff | 2305 | }; |