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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" |
218cfe23 | 16 | #include "fs-util.h" |
4f5dd394 | 17 | #include "fstab-util.h" |
baa6a42d | 18 | #include "initrd-util.h" |
fb36b133 | 19 | #include "libmount-util.h" |
4f5dd394 LP |
20 | #include "log.h" |
21 | #include "manager.h" | |
35cd0ba5 | 22 | #include "mkdir-label.h" |
4f5dd394 LP |
23 | #include "mount-setup.h" |
24 | #include "mount.h" | |
049af8ad | 25 | #include "mountpoint-util.h" |
6bedfcbb | 26 | #include "parse-util.h" |
4f5dd394 | 27 | #include "path-util.h" |
7b3e062c | 28 | #include "process-util.h" |
d68c645b | 29 | #include "serialize.h" |
4f5dd394 | 30 | #include "special.h" |
218cfe23 | 31 | #include "stat-util.h" |
8b43440b | 32 | #include "string-table.h" |
b5efdb8a | 33 | #include "string-util.h" |
4f5dd394 LP |
34 | #include "strv.h" |
35 | #include "unit-name.h" | |
36 | #include "unit.h" | |
5cb5a6ff | 37 | |
7d54a03a LP |
38 | #define RETRY_UMOUNT_MAX 32 |
39 | ||
f50e0a01 LP |
40 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
41 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
42 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 43 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 44 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 45 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 46 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
47 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
48 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
49 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
50 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
17e9d53d YW |
51 | [MOUNT_FAILED] = UNIT_FAILED, |
52 | [MOUNT_CLEANING] = UNIT_MAINTENANCE, | |
f50e0a01 | 53 | }; |
5cb5a6ff | 54 | |
718db961 LP |
55 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
56 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
01400460 YW |
57 | static void mount_enter_dead(Mount *m, MountResult f); |
58 | static void mount_enter_mounted(Mount *m, MountResult f); | |
59 | static void mount_cycle_clear(Mount *m); | |
35080486 | 60 | static int mount_process_proc_self_mountinfo(Manager *m); |
718db961 | 61 | |
c634f3d2 LP |
62 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
63 | return IN_SET(state, | |
64 | MOUNT_MOUNTING, | |
65 | MOUNT_MOUNTING_DONE, | |
66 | MOUNT_REMOUNTING, | |
67 | MOUNT_REMOUNTING_SIGTERM, | |
68 | MOUNT_REMOUNTING_SIGKILL, | |
69 | MOUNT_UNMOUNTING, | |
70 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
71 | MOUNT_UNMOUNTING_SIGKILL, |
72 | MOUNT_CLEANING); | |
c634f3d2 LP |
73 | } |
74 | ||
47cd17ea LP |
75 | static MountParameters* get_mount_parameters_fragment(Mount *m) { |
76 | assert(m); | |
77 | ||
78 | if (m->from_fragment) | |
79 | return &m->parameters_fragment; | |
80 | ||
81 | return NULL; | |
82 | } | |
83 | ||
84 | static MountParameters* get_mount_parameters(Mount *m) { | |
85 | assert(m); | |
86 | ||
87 | if (m->from_proc_self_mountinfo) | |
88 | return &m->parameters_proc_self_mountinfo; | |
89 | ||
90 | return get_mount_parameters_fragment(m); | |
91 | } | |
92 | ||
7121cbcf LP |
93 | static bool mount_is_network(const MountParameters *p) { |
94 | assert(p); | |
95 | ||
96 | if (fstab_test_option(p->options, "_netdev\0")) | |
fc676b00 ZJS |
97 | return true; |
98 | ||
7121cbcf | 99 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
100 | return true; |
101 | ||
102 | return false; | |
103 | } | |
104 | ||
5a7c4f4f FB |
105 | static bool mount_is_nofail(const Mount *m) { |
106 | assert(m); | |
107 | ||
108 | if (!m->from_fragment) | |
109 | return false; | |
110 | ||
111 | return fstab_test_yes_no_option(m->parameters_fragment.options, "nofail\0" "fail\0"); | |
112 | } | |
113 | ||
d3bd0986 MK |
114 | static bool mount_is_loop(const MountParameters *p) { |
115 | assert(p); | |
116 | ||
117 | if (fstab_test_option(p->options, "loop\0")) | |
118 | return true; | |
119 | ||
120 | return false; | |
121 | } | |
122 | ||
e6a7b9f4 | 123 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
124 | assert(p); |
125 | ||
d15d0333 | 126 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
127 | return true; |
128 | ||
d15d0333 | 129 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
130 | return true; |
131 | ||
132 | return false; | |
133 | } | |
134 | ||
47cd17ea | 135 | static bool mount_is_bound_to_device(Mount *m) { |
ebc8968b FB |
136 | const MountParameters *p; |
137 | ||
47cd17ea LP |
138 | assert(m); |
139 | ||
140 | /* Determines whether to place a Requires= or BindsTo= dependency on the backing device unit. We do | |
141 | * this by checking for the x-systemd.device-bound mount option. Iff it is set we use BindsTo=, | |
142 | * otherwise Requires=. But note that we might combine the latter with StopPropagatedFrom=, see | |
143 | * below. */ | |
144 | ||
145 | p = get_mount_parameters(m); | |
146 | if (!p) | |
147 | return false; | |
ebc8968b | 148 | |
ebc8968b FB |
149 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); |
150 | } | |
151 | ||
47cd17ea LP |
152 | static bool mount_propagate_stop(Mount *m) { |
153 | assert(m); | |
154 | ||
155 | if (mount_is_bound_to_device(m)) /* If we are using BindsTo= the stop propagation is implicit, no need to bother */ | |
156 | return false; | |
157 | ||
158 | return m->from_fragment; /* let's propagate stop whenever this is an explicitly configured unit, | |
159 | * otherwise let's not bother. */ | |
160 | } | |
161 | ||
06e457b1 | 162 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
163 | assert(p); |
164 | ||
d72f4a38 | 165 | if (p->fstype && !fstype_needs_quota(p->fstype)) |
fc676b00 ZJS |
166 | return false; |
167 | ||
168 | if (mount_is_bind(p)) | |
169 | return false; | |
170 | ||
d15d0333 ZJS |
171 | return fstab_test_option(p->options, |
172 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
173 | } |
174 | ||
a16e1123 LP |
175 | static void mount_init(Unit *u) { |
176 | Mount *m = MOUNT(u); | |
5cb5a6ff | 177 | |
c73f413d | 178 | assert(m); |
a16e1123 | 179 | assert(u); |
ac155bb8 | 180 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 181 | |
1f19a534 | 182 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
183 | |
184 | m->exec_context.std_output = u->manager->default_std_output; | |
185 | m->exec_context.std_error = u->manager->default_std_error; | |
186 | ||
3e5235b0 LP |
187 | m->directory_mode = 0755; |
188 | ||
f00929ad DJL |
189 | /* We need to make sure that /usr/bin/mount is always called |
190 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
191 | * side doesn't send us another mount request while we are |
192 | * already trying to comply its last one. */ | |
74922904 | 193 | m->exec_context.same_pgrp = true; |
8d567588 | 194 | |
a16e1123 | 195 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 196 | |
5bcb0f2b | 197 | u->ignore_on_isolate = true; |
8d567588 LP |
198 | } |
199 | ||
36c16a7c | 200 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
201 | int r; |
202 | ||
203 | assert(m); | |
204 | ||
718db961 | 205 | if (m->timer_event_source) { |
36c16a7c | 206 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
207 | if (r < 0) |
208 | return r; | |
209 | ||
210 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
211 | } | |
212 | ||
36c16a7c LP |
213 | if (usec == USEC_INFINITY) |
214 | return 0; | |
215 | ||
7dfbe2e3 | 216 | r = sd_event_add_time( |
6a0f1f6d LP |
217 | UNIT(m)->manager->event, |
218 | &m->timer_event_source, | |
219 | CLOCK_MONOTONIC, | |
36c16a7c | 220 | usec, 0, |
6a0f1f6d | 221 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
222 | if (r < 0) |
223 | return r; | |
224 | ||
225 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
226 | ||
227 | return 0; | |
718db961 LP |
228 | } |
229 | ||
a16e1123 | 230 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
231 | assert(m); |
232 | ||
233 | if (m->control_pid <= 0) | |
234 | return; | |
235 | ||
8f03de53 | 236 | unit_unwatch_pid(UNIT(m), TAKE_PID(m->control_pid)); |
5e94833f LP |
237 | } |
238 | ||
e537352b LP |
239 | static void mount_parameters_done(MountParameters *p) { |
240 | assert(p); | |
241 | ||
a26592cf LP |
242 | p->what = mfree(p->what); |
243 | p->options = mfree(p->options); | |
244 | p->fstype = mfree(p->fstype); | |
e537352b LP |
245 | } |
246 | ||
87f0e418 | 247 | static void mount_done(Unit *u) { |
ef734fd6 | 248 | Mount *m = MOUNT(u); |
034c6ed7 | 249 | |
ef734fd6 | 250 | assert(m); |
034c6ed7 | 251 | |
a1e58e8e | 252 | m->where = mfree(m->where); |
f50e0a01 | 253 | |
e537352b LP |
254 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
255 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 256 | |
28135da3 | 257 | m->exec_runtime = exec_runtime_free(m->exec_runtime); |
e537352b LP |
258 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
259 | m->control_command = NULL; | |
f50e0a01 | 260 | |
a16e1123 | 261 | mount_unwatch_control_pid(m); |
f50e0a01 | 262 | |
5dcadb4c | 263 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
f50e0a01 LP |
264 | } |
265 | ||
9ddaa3e4 | 266 | static int update_parameters_proc_self_mountinfo( |
b7bbf890 ZJS |
267 | Mount *m, |
268 | const char *what, | |
269 | const char *options, | |
270 | const char *fstype) { | |
271 | ||
272 | MountParameters *p; | |
273 | int r, q, w; | |
274 | ||
275 | p = &m->parameters_proc_self_mountinfo; | |
276 | ||
277 | r = free_and_strdup(&p->what, what); | |
278 | if (r < 0) | |
279 | return r; | |
280 | ||
281 | q = free_and_strdup(&p->options, options); | |
282 | if (q < 0) | |
283 | return q; | |
284 | ||
285 | w = free_and_strdup(&p->fstype, fstype); | |
286 | if (w < 0) | |
287 | return w; | |
288 | ||
289 | return r > 0 || q > 0 || w > 0; | |
290 | } | |
291 | ||
eef85c4a | 292 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 293 | MountParameters *pm; |
ac155bb8 | 294 | Unit *other; |
a57f7e2c | 295 | Set *s; |
b08d03ff LP |
296 | int r; |
297 | ||
6e2ef85b | 298 | assert(m); |
b08d03ff | 299 | |
a57f7e2c | 300 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
301 | _cleanup_free_ char *parent = NULL; |
302 | ||
303 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c | 304 | |
45519d13 LP |
305 | r = path_extract_directory(m->where, &parent); |
306 | if (r < 0) | |
307 | return r; | |
01f78473 | 308 | |
eef85c4a | 309 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 310 | if (r < 0) |
01f78473 | 311 | return r; |
4f0eedb7 | 312 | } |
01f78473 | 313 | |
eef85c4a LP |
314 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
315 | * or a loop mount) to be available. */ | |
a57f7e2c | 316 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
317 | if (pm && pm->what && |
318 | path_is_absolute(pm->what) && | |
d3bd0986 | 319 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 320 | |
eef85c4a | 321 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 322 | if (r < 0) |
6e2ef85b | 323 | return r; |
4f0eedb7 | 324 | } |
b08d03ff | 325 | |
eef85c4a | 326 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c | 327 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
90e74a66 | 328 | SET_FOREACH(other, s) { |
b08d03ff | 329 | |
a57f7e2c LP |
330 | if (other->load_state != UNIT_LOADED) |
331 | continue; | |
b08d03ff | 332 | |
a57f7e2c LP |
333 | if (other == UNIT(m)) |
334 | continue; | |
b08d03ff | 335 | |
eef85c4a | 336 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 337 | if (r < 0) |
6e2ef85b | 338 | return r; |
b08d03ff | 339 | |
a57f7e2c LP |
340 | if (UNIT(m)->fragment_path) { |
341 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 342 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
343 | if (r < 0) |
344 | return r; | |
345 | } | |
7c8fa05c LP |
346 | } |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
eef85c4a | 351 | static int mount_add_device_dependencies(Mount *m) { |
87c734ee | 352 | UnitDependencyMask mask; |
eef85c4a | 353 | MountParameters *p; |
ebc8968b | 354 | UnitDependency dep; |
9fff8a1f | 355 | int r; |
173a8d04 LP |
356 | |
357 | assert(m); | |
358 | ||
556b6f4e DDM |
359 | log_unit_trace(UNIT(m), "Processing implicit device dependencies"); |
360 | ||
06e97888 | 361 | p = get_mount_parameters(m); |
556b6f4e DDM |
362 | if (!p) { |
363 | log_unit_trace(UNIT(m), "Missing mount parameters, skipping implicit device dependencies"); | |
173a8d04 | 364 | return 0; |
556b6f4e | 365 | } |
173a8d04 | 366 | |
556b6f4e DDM |
367 | if (!p->what) { |
368 | log_unit_trace(UNIT(m), "Missing mount source, skipping implicit device dependencies"); | |
173a8d04 | 369 | return 0; |
556b6f4e | 370 | } |
5c78d8e2 | 371 | |
556b6f4e DDM |
372 | if (mount_is_bind(p)) { |
373 | log_unit_trace(UNIT(m), "Mount unit is a bind mount, skipping implicit device dependencies"); | |
dd144c63 | 374 | return 0; |
556b6f4e | 375 | } |
dd144c63 | 376 | |
556b6f4e DDM |
377 | if (!is_device_path(p->what)) { |
378 | log_unit_trace(UNIT(m), "Mount source is not a device path, skipping implicit device dependencies"); | |
dd144c63 | 379 | return 0; |
556b6f4e | 380 | } |
dd144c63 | 381 | |
5de0acf4 LP |
382 | /* /dev/root is a really weird thing, it's not a real device, but just a path the kernel exports for |
383 | * the root file system specified on the kernel command line. Ignore it here. */ | |
556b6f4e DDM |
384 | if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs")) { |
385 | log_unit_trace(UNIT(m), "Mount source is in /dev/root or /dev/nfs, skipping implicit device dependencies"); | |
7ba2711d | 386 | return 0; |
556b6f4e | 387 | } |
7ba2711d | 388 | |
556b6f4e DDM |
389 | if (path_equal(m->where, "/")) { |
390 | log_unit_trace(UNIT(m), "Mount destination is '/', skipping implicit device dependencies"); | |
dd144c63 | 391 | return 0; |
556b6f4e | 392 | } |
dd144c63 | 393 | |
44b0d1fd | 394 | /* Mount units from /proc/self/mountinfo are not bound to devices by default since they're subject to |
47cd17ea LP |
395 | * races when mounts are established by other tools with different backing devices than what we |
396 | * maintain. The user can still force this to be a BindsTo= dependency with an appropriate option (or | |
397 | * udev property) so the mount units are automatically stopped when the device disappears | |
44b0d1fd | 398 | * suddenly. */ |
ebc8968b FB |
399 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; |
400 | ||
87c734ee FB |
401 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
402 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; | |
403 | ||
404 | r = unit_add_node_dependency(UNIT(m), p->what, dep, mask); | |
dd144c63 LP |
405 | if (r < 0) |
406 | return r; | |
556b6f4e DDM |
407 | if (r > 0) |
408 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(dep), p->what); | |
409 | ||
47cd17ea | 410 | if (mount_propagate_stop(m)) { |
87c734ee | 411 | r = unit_add_node_dependency(UNIT(m), p->what, UNIT_STOP_PROPAGATED_FROM, mask); |
47cd17ea LP |
412 | if (r < 0) |
413 | return r; | |
556b6f4e DDM |
414 | if (r > 0) |
415 | log_unit_trace(UNIT(m), "Added %s dependency on %s", | |
416 | unit_dependency_to_string(UNIT_STOP_PROPAGATED_FROM), p->what); | |
47cd17ea | 417 | } |
9fff8a1f | 418 | |
87c734ee | 419 | r = unit_add_blockdev_dependency(UNIT(m), p->what, mask); |
556b6f4e DDM |
420 | if (r > 0) |
421 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(UNIT_AFTER), p->what); | |
422 | ||
49267b1b | 423 | return 0; |
173a8d04 LP |
424 | } |
425 | ||
eef85c4a | 426 | static int mount_add_quota_dependencies(Mount *m) { |
6b1dc2bd | 427 | MountParameters *p; |
eef85c4a | 428 | int r; |
6b1dc2bd LP |
429 | |
430 | assert(m); | |
431 | ||
463d0d15 | 432 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
433 | return 0; |
434 | ||
435 | p = get_mount_parameters_fragment(m); | |
436 | if (!p) | |
437 | return 0; | |
438 | ||
06e457b1 | 439 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
440 | return 0; |
441 | ||
c5d82021 FB |
442 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, |
443 | /* add_reference= */ true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
444 | if (r < 0) |
445 | return r; | |
446 | ||
c5d82021 FB |
447 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, |
448 | /* add_reference= */true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
449 | if (r < 0) |
450 | return r; | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
39c79477 | 455 | static bool mount_is_extrinsic(Unit *u) { |
88ac30a1 | 456 | MountParameters *p; |
39c79477 | 457 | Mount *m = MOUNT(u); |
ad2706db | 458 | assert(m); |
88ac30a1 | 459 | |
bc9e5a4c FB |
460 | /* Returns true for all units that are "magic" and should be excluded from the usual |
461 | * start-up and shutdown dependencies. We call them "extrinsic" here, as they are generally | |
462 | * mounted outside of the systemd dependency logic. We shouldn't attempt to manage them | |
463 | * ourselves but it's fine if the user operates on them with us. */ | |
ad2706db | 464 | |
bc9e5a4c | 465 | /* We only automatically manage mounts if we are in system mode */ |
39c79477 | 466 | if (MANAGER_IS_USER(u->manager)) |
b8e5776d LP |
467 | return true; |
468 | ||
88ac30a1 | 469 | p = get_mount_parameters(m); |
bc9e5a4c | 470 | if (p && fstab_is_extrinsic(m->where, p->options)) |
ad2706db | 471 | return true; |
88ac30a1 | 472 | |
ad2706db | 473 | return false; |
88ac30a1 TG |
474 | } |
475 | ||
87c734ee | 476 | static int mount_add_default_ordering_dependencies(Mount *m, MountParameters *p, UnitDependencyMask mask) { |
83cdc870 | 477 | const char *after, *before, *e; |
d54bab90 | 478 | int r; |
2edd4434 LP |
479 | |
480 | assert(m); | |
481 | ||
83cdc870 FB |
482 | e = path_startswith(m->where, "/sysroot"); |
483 | if (e && in_initrd()) { | |
484 | /* All mounts under /sysroot need to happen later, at initrd-fs.target time. IOW, | |
485 | * it's not technically part of the basic initrd filesystem itself, and so | |
6e017b19 WF |
486 | * shouldn't inherit the default Before=local-fs.target dependency. However, |
487 | * these mounts still need to start after local-fs-pre.target, as a sync point | |
488 | * for things like systemd-hibernate-resume@.service that should start before | |
489 | * any mounts. */ | |
83cdc870 | 490 | |
6e017b19 | 491 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
83cdc870 FB |
492 | before = isempty(e) ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_INITRD_FS_TARGET; |
493 | ||
dbfc0960 | 494 | } else if (in_initrd() && path_startswith(m->where, "/sysusr/usr")) { |
6e017b19 | 495 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
dbfc0960 YW |
496 | before = SPECIAL_INITRD_USR_FS_TARGET; |
497 | ||
83cdc870 | 498 | } else if (mount_is_network(p)) { |
ea0ec5ce | 499 | after = SPECIAL_REMOTE_FS_PRE_TARGET; |
d54bab90 | 500 | before = SPECIAL_REMOTE_FS_TARGET; |
2ec15c4f | 501 | |
d54bab90 | 502 | } else { |
ea0ec5ce | 503 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
504 | before = SPECIAL_LOCAL_FS_TARGET; |
505 | } | |
506 | ||
195baa1b | 507 | if (!mount_is_nofail(m)) { |
87c734ee | 508 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, /* add_reference= */ true, mask); |
8c8203db YW |
509 | if (r < 0) |
510 | return r; | |
511 | } | |
ea0ec5ce | 512 | |
6e017b19 WF |
513 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, /* add_reference= */ true, mask); |
514 | if (r < 0) | |
515 | return r; | |
e8d2f6cd | 516 | |
87c734ee FB |
517 | return unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, |
518 | /* add_reference= */ true, mask); | |
61154cf9 FB |
519 | } |
520 | ||
2edd4434 | 521 | static int mount_add_default_dependencies(Mount *m) { |
87c734ee | 522 | UnitDependencyMask mask; |
9ddc4a26 | 523 | MountParameters *p; |
d54bab90 | 524 | int r; |
2edd4434 LP |
525 | |
526 | assert(m); | |
527 | ||
4c9ea260 LP |
528 | if (!UNIT(m)->default_dependencies) |
529 | return 0; | |
530 | ||
61154cf9 FB |
531 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are |
532 | * guaranteed to stay mounted the whole time, since our system is on it. Also, don't | |
533 | * bother with anything mounted below virtual file systems, it's also going to be virtual, | |
534 | * and hence not worth the effort. */ | |
39c79477 | 535 | if (mount_is_extrinsic(UNIT(m))) |
6b1dc2bd | 536 | return 0; |
2edd4434 | 537 | |
874d3404 LP |
538 | p = get_mount_parameters(m); |
539 | if (!p) | |
6b1dc2bd LP |
540 | return 0; |
541 | ||
87c734ee FB |
542 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; |
543 | ||
544 | r = mount_add_default_ordering_dependencies(m, p, mask); | |
ad2706db LP |
545 | if (r < 0) |
546 | return r; | |
eef85c4a | 547 | |
e8d2f6cd | 548 | if (mount_is_network(p)) { |
2ec15c4f FB |
549 | /* We order ourselves after network.target. This is primarily useful at shutdown: |
550 | * services that take down the network should order themselves before | |
551 | * network.target, so that they are shut down only after this mount unit is | |
552 | * stopped. */ | |
6b1dc2bd | 553 | |
87c734ee FB |
554 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, |
555 | /* add_reference= */ true, mask); | |
a63a5c46 LP |
556 | if (r < 0) |
557 | return r; | |
a63a5c46 | 558 | |
2ec15c4f FB |
559 | /* We pull in network-online.target, and order ourselves after it. This is useful |
560 | * at start-up to actively pull in tools that want to be started before we start | |
561 | * mounting network file systems, and whose purpose it is to delay this until the | |
562 | * network is "up". */ | |
ea0ec5ce | 563 | |
87c734ee FB |
564 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, |
565 | /* add_reference= */ true, mask); | |
e8d2f6cd LP |
566 | if (r < 0) |
567 | return r; | |
d54bab90 LP |
568 | } |
569 | ||
3e3852b3 | 570 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 571 | if (streq_ptr(p->fstype, "tmpfs")) { |
87c734ee FB |
572 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, |
573 | /* add_reference= */ true, mask); | |
3e3852b3 LP |
574 | if (r < 0) |
575 | return r; | |
576 | } | |
577 | ||
2edd4434 LP |
578 | return 0; |
579 | } | |
580 | ||
8d567588 | 581 | static int mount_verify(Mount *m) { |
a57f7e2c | 582 | _cleanup_free_ char *e = NULL; |
b294b79f | 583 | MountParameters *p; |
7410616c | 584 | int r; |
a57f7e2c | 585 | |
8d567588 | 586 | assert(m); |
75193d41 | 587 | assert(UNIT(m)->load_state == UNIT_LOADED); |
8d567588 | 588 | |
1df96fcb | 589 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
590 | return -ENOENT; |
591 | ||
7410616c LP |
592 | r = unit_name_from_path(m->where, ".mount", &e); |
593 | if (r < 0) | |
f2341e0a | 594 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 595 | |
d85ff944 YW |
596 | if (!unit_has_name(UNIT(m), e)) |
597 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Where= setting doesn't match unit name. Refusing."); | |
8d567588 | 598 | |
d85ff944 YW |
599 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) |
600 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Cannot create mount unit for API file system %s. Refusing.", m->where); | |
33ff02c9 | 601 | |
b294b79f | 602 | p = get_mount_parameters_fragment(m); |
0879fbd6 LP |
603 | if (p && !p->what && !UNIT(m)->perpetual) |
604 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), | |
605 | "What= setting is missing. Refusing."); | |
4e85aff4 | 606 | |
d85ff944 YW |
607 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) |
608 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); | |
4d0e5dbd | 609 | |
8d567588 LP |
610 | return 0; |
611 | } | |
612 | ||
bf7eedbf LP |
613 | static int mount_add_non_exec_dependencies(Mount *m) { |
614 | int r; | |
49267b1b | 615 | |
bf7eedbf LP |
616 | assert(m); |
617 | ||
9c77ffc7 FB |
618 | /* We may be called due to this mount appearing in /proc/self/mountinfo, hence we clear all existing |
619 | * dependencies that were initialized from the unit file but whose final value really depends on the | |
620 | * content of /proc/self/mountinfo. Some (such as m->where) might have become stale now. */ | |
87c734ee | 621 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO | UNIT_DEPENDENCY_MOUNT_FILE); |
49267b1b YW |
622 | |
623 | if (!m->where) | |
624 | return 0; | |
625 | ||
bf7eedbf LP |
626 | /* Adds in all dependencies directly responsible for ordering the mount, as opposed to dependencies |
627 | * resulting from the ExecContext and such. */ | |
628 | ||
629 | r = mount_add_device_dependencies(m); | |
630 | if (r < 0) | |
631 | return r; | |
632 | ||
633 | r = mount_add_mount_dependencies(m); | |
634 | if (r < 0) | |
635 | return r; | |
636 | ||
637 | r = mount_add_quota_dependencies(m); | |
638 | if (r < 0) | |
639 | return r; | |
640 | ||
641 | r = mount_add_default_dependencies(m); | |
642 | if (r < 0) | |
643 | return r; | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
1a4ac875 MS |
648 | static int mount_add_extras(Mount *m) { |
649 | Unit *u = UNIT(m); | |
e537352b LP |
650 | int r; |
651 | ||
e821075a LP |
652 | assert(m); |
653 | ||
1f736476 LP |
654 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
655 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
656 | * to run with an already set up unit. */ | |
657 | ||
e821075a | 658 | if (u->fragment_path) |
1a4ac875 | 659 | m->from_fragment = true; |
e537352b | 660 | |
1a4ac875 | 661 | if (!m->where) { |
7410616c | 662 | r = unit_name_to_path(u->id, &m->where); |
1d0727e7 MS |
663 | if (r == -ENAMETOOLONG) |
664 | log_unit_error_errno(u, r, "Failed to derive mount point path from unit name, because unit name is hashed. " | |
665 | "Set \"Where=\" in the unit file explicitly."); | |
7410616c LP |
666 | if (r < 0) |
667 | return r; | |
1a4ac875 | 668 | } |
a16e1123 | 669 | |
4ff361cc | 670 | path_simplify(m->where); |
e537352b | 671 | |
e821075a | 672 | if (!u->description) { |
1a4ac875 MS |
673 | r = unit_set_description(u, m->where); |
674 | if (r < 0) | |
173a8d04 | 675 | return r; |
1a4ac875 | 676 | } |
6e2ef85b | 677 | |
598459ce LP |
678 | r = unit_patch_contexts(u); |
679 | if (r < 0) | |
680 | return r; | |
4e67ddd6 | 681 | |
598459ce | 682 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
683 | if (r < 0) |
684 | return r; | |
685 | ||
d79200e2 | 686 | r = unit_set_default_slice(u); |
1a4ac875 MS |
687 | if (r < 0) |
688 | return r; | |
689 | ||
bf7eedbf | 690 | r = mount_add_non_exec_dependencies(m); |
4c9ea260 LP |
691 | if (r < 0) |
692 | return r; | |
598459ce | 693 | |
1a4ac875 MS |
694 | return 0; |
695 | } | |
696 | ||
75193d41 | 697 | static void mount_load_root_mount(Unit *u) { |
11222d0f LP |
698 | assert(u); |
699 | ||
700 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
75193d41 | 701 | return; |
11222d0f LP |
702 | |
703 | u->perpetual = true; | |
704 | u->default_dependencies = false; | |
705 | ||
706 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
707 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
708 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
709 | ||
710 | if (!u->description) | |
711 | u->description = strdup("Root Mount"); | |
11222d0f LP |
712 | } |
713 | ||
1a4ac875 MS |
714 | static int mount_load(Unit *u) { |
715 | Mount *m = MOUNT(u); | |
75193d41 | 716 | int r, q = 0; |
1a4ac875 | 717 | |
c73f413d | 718 | assert(m); |
1a4ac875 MS |
719 | assert(u); |
720 | assert(u->load_state == UNIT_STUB); | |
721 | ||
75193d41 | 722 | mount_load_root_mount(u); |
11222d0f | 723 | |
c3620770 | 724 | bool fragment_optional = m->from_proc_self_mountinfo || u->perpetual; |
75193d41 | 725 | r = unit_load_fragment_and_dropin(u, !fragment_optional); |
780ae022 LP |
726 | |
727 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
728 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
729 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
730 | * 'slice' field for a unit once it is active. */ | |
731 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
75193d41 | 732 | q = mount_add_extras(m); |
780ae022 | 733 | |
1a4ac875 MS |
734 | if (r < 0) |
735 | return r; | |
780ae022 LP |
736 | if (q < 0) |
737 | return q; | |
75193d41 ZJS |
738 | if (u->load_state != UNIT_LOADED) |
739 | return 0; | |
e537352b | 740 | |
8d567588 | 741 | return mount_verify(m); |
e537352b LP |
742 | } |
743 | ||
744 | static void mount_set_state(Mount *m, MountState state) { | |
745 | MountState old_state; | |
746 | assert(m); | |
747 | ||
6fcbec6f LP |
748 | if (m->state != state) |
749 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
750 | ||
e537352b LP |
751 | old_state = m->state; |
752 | m->state = state; | |
753 | ||
c634f3d2 | 754 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
5dcadb4c | 755 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
a16e1123 | 756 | mount_unwatch_control_pid(m); |
e537352b | 757 | m->control_command = NULL; |
a16e1123 | 758 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
759 | } |
760 | ||
761 | if (state != old_state) | |
f2341e0a | 762 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 763 | |
2ad2e41a LP |
764 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
765 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
766 | } |
767 | ||
be847e82 | 768 | static int mount_coldplug(Unit *u) { |
e537352b | 769 | Mount *m = MOUNT(u); |
a16e1123 | 770 | int r; |
e537352b LP |
771 | |
772 | assert(m); | |
773 | assert(m->state == MOUNT_DEAD); | |
774 | ||
01400460 | 775 | if (m->deserialized_state == m->state) |
5bcb0f2b | 776 | return 0; |
e537352b | 777 | |
c386f588 LP |
778 | if (m->control_pid > 0 && |
779 | pid_is_unwaited(m->control_pid) && | |
01400460 | 780 | MOUNT_STATE_WITH_PROCESS(m->deserialized_state)) { |
5bcb0f2b | 781 | |
f75f613d | 782 | r = unit_watch_pid(UNIT(m), m->control_pid, false); |
5bcb0f2b LP |
783 | if (r < 0) |
784 | return r; | |
e537352b | 785 | |
36c16a7c | 786 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
787 | if (r < 0) |
788 | return r; | |
a16e1123 | 789 | } |
e537352b | 790 | |
15220772 | 791 | if (!IN_SET(m->deserialized_state, MOUNT_DEAD, MOUNT_FAILED)) |
e8a565cb | 792 | (void) unit_setup_exec_runtime(u); |
29206d46 | 793 | |
01400460 | 794 | mount_set_state(m, m->deserialized_state); |
e537352b | 795 | return 0; |
e537352b LP |
796 | } |
797 | ||
01400460 YW |
798 | static void mount_catchup(Unit *u) { |
799 | Mount *m = MOUNT(ASSERT_PTR(u)); | |
800 | ||
801 | assert(m); | |
802 | ||
803 | /* Adjust the deserialized state. See comments in mount_process_proc_self_mountinfo(). */ | |
804 | if (m->from_proc_self_mountinfo) | |
805 | switch (m->state) { | |
806 | case MOUNT_DEAD: | |
807 | case MOUNT_FAILED: | |
808 | assert(m->control_pid == 0); | |
039f4284 | 809 | (void) unit_acquire_invocation_id(u); |
01400460 YW |
810 | mount_cycle_clear(m); |
811 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
812 | break; | |
813 | case MOUNT_MOUNTING: | |
814 | assert(m->control_pid > 0); | |
815 | mount_set_state(m, MOUNT_MOUNTING_DONE); | |
816 | break; | |
817 | default: | |
818 | break; | |
819 | } | |
820 | else | |
821 | switch (m->state) { | |
822 | case MOUNT_MOUNTING_DONE: | |
823 | assert(m->control_pid > 0); | |
824 | mount_set_state(m, MOUNT_MOUNTING); | |
825 | break; | |
826 | case MOUNT_MOUNTED: | |
827 | assert(m->control_pid == 0); | |
828 | mount_enter_dead(m, MOUNT_SUCCESS); | |
829 | break; | |
830 | default: | |
831 | break; | |
832 | } | |
833 | } | |
834 | ||
e537352b LP |
835 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { |
836 | Mount *m = MOUNT(u); | |
837 | MountParameters *p; | |
838 | ||
839 | assert(m); | |
840 | assert(f); | |
841 | ||
cb39ed3f | 842 | p = get_mount_parameters(m); |
e537352b LP |
843 | |
844 | fprintf(f, | |
845 | "%sMount State: %s\n" | |
81a5c6d0 | 846 | "%sResult: %s\n" |
17e9d53d | 847 | "%sClean Result: %s\n" |
e537352b LP |
848 | "%sWhere: %s\n" |
849 | "%sWhat: %s\n" | |
850 | "%sFile System Type: %s\n" | |
851 | "%sOptions: %s\n" | |
e537352b LP |
852 | "%sFrom /proc/self/mountinfo: %s\n" |
853 | "%sFrom fragment: %s\n" | |
ad2706db | 854 | "%sExtrinsic: %s\n" |
e520950a | 855 | "%sDirectoryMode: %04o\n" |
49915de2 | 856 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 857 | "%sLazyUnmount: %s\n" |
91899792 | 858 | "%sForceUnmount: %s\n" |
c600357b | 859 | "%sReadWriteOnly: %s\n" |
ac8956ef | 860 | "%sTimeoutSec: %s\n", |
a16e1123 | 861 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 862 | prefix, mount_result_to_string(m->result), |
17e9d53d | 863 | prefix, mount_result_to_string(m->clean_result), |
e537352b | 864 | prefix, m->where, |
1e4fc9b1 HH |
865 | prefix, p ? strna(p->what) : "n/a", |
866 | prefix, p ? strna(p->fstype) : "n/a", | |
867 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
868 | prefix, yes_no(m->from_proc_self_mountinfo), |
869 | prefix, yes_no(m->from_fragment), | |
39c79477 | 870 | prefix, yes_no(mount_is_extrinsic(u)), |
e520950a | 871 | prefix, m->directory_mode, |
49915de2 | 872 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 873 | prefix, yes_no(m->lazy_unmount), |
91899792 | 874 | prefix, yes_no(m->force_unmount), |
c600357b | 875 | prefix, yes_no(m->read_write_only), |
5291f26d | 876 | prefix, FORMAT_TIMESPAN(m->timeout_usec, USEC_PER_SEC)); |
e537352b LP |
877 | |
878 | if (m->control_pid > 0) | |
879 | fprintf(f, | |
ccd06097 ZJS |
880 | "%sControl PID: "PID_FMT"\n", |
881 | prefix, m->control_pid); | |
e537352b LP |
882 | |
883 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 884 | kill_context_dump(&m->kill_context, f, prefix); |
bc0623df | 885 | cgroup_context_dump(UNIT(m), f, prefix); |
e537352b LP |
886 | } |
887 | ||
a16e1123 | 888 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 889 | |
b9c04eaf | 890 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b | 891 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
254d1313 ZJS |
892 | .stdin_fd = -EBADF, |
893 | .stdout_fd = -EBADF, | |
894 | .stderr_fd = -EBADF, | |
895 | .exec_fd = -EBADF, | |
9fa95f85 | 896 | }; |
3c7416b6 LP |
897 | pid_t pid; |
898 | int r; | |
a16e1123 LP |
899 | |
900 | assert(m); | |
901 | assert(c); | |
902 | assert(_pid); | |
903 | ||
3c7416b6 | 904 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
905 | if (r < 0) |
906 | return r; | |
907 | ||
36c16a7c | 908 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 909 | if (r < 0) |
36c16a7c | 910 | return r; |
a16e1123 | 911 | |
1ad6e8b3 LP |
912 | r = unit_set_exec_params(UNIT(m), &exec_params); |
913 | if (r < 0) | |
914 | return r; | |
9fa95f85 | 915 | |
f2341e0a LP |
916 | r = exec_spawn(UNIT(m), |
917 | c, | |
4ad49000 | 918 | &m->exec_context, |
9fa95f85 | 919 | &exec_params, |
613b411c | 920 | m->exec_runtime, |
6bb00842 | 921 | &m->cgroup_context, |
4ad49000 LP |
922 | &pid); |
923 | if (r < 0) | |
36c16a7c | 924 | return r; |
a16e1123 | 925 | |
f75f613d | 926 | r = unit_watch_pid(UNIT(m), pid, true); |
4ad49000 | 927 | if (r < 0) |
36c16a7c | 928 | return r; |
a16e1123 LP |
929 | |
930 | *_pid = pid; | |
931 | ||
932 | return 0; | |
a16e1123 LP |
933 | } |
934 | ||
9d2f5178 | 935 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
936 | assert(m); |
937 | ||
a0fef983 | 938 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 939 | m->result = f; |
e537352b | 940 | |
aac99f30 | 941 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
4c425434 LP |
942 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_stop); |
943 | ||
29206d46 LP |
944 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
945 | ||
28135da3 | 946 | m->exec_runtime = exec_runtime_destroy(m->exec_runtime); |
613b411c | 947 | |
bb0c0d6f | 948 | unit_destroy_runtime_data(UNIT(m), &m->exec_context); |
e66cf1a3 | 949 | |
00d9ef85 LP |
950 | unit_unref_uid_gid(UNIT(m), true); |
951 | ||
49267b1b YW |
952 | /* Any dependencies based on /proc/self/mountinfo are now stale. Let's re-generate dependencies from |
953 | * .mount unit. */ | |
954 | (void) mount_add_non_exec_dependencies(m); | |
e537352b LP |
955 | } |
956 | ||
9d2f5178 | 957 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
958 | assert(m); |
959 | ||
a0fef983 | 960 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 961 | m->result = f; |
80876c20 LP |
962 | |
963 | mount_set_state(m, MOUNT_MOUNTED); | |
964 | } | |
965 | ||
22af0e58 LP |
966 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
967 | assert(m); | |
968 | ||
969 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
970 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
971 | * ultimately we just mirror the kernel's internal state on this. */ | |
972 | ||
973 | if (m->from_proc_self_mountinfo) | |
974 | mount_enter_mounted(m, f); | |
975 | else | |
976 | mount_enter_dead(m, f); | |
977 | } | |
978 | ||
979 | static int state_to_kill_operation(MountState state) { | |
980 | switch (state) { | |
981 | ||
982 | case MOUNT_REMOUNTING_SIGTERM: | |
a232ebcc ZJS |
983 | return KILL_RESTART; |
984 | ||
22af0e58 LP |
985 | case MOUNT_UNMOUNTING_SIGTERM: |
986 | return KILL_TERMINATE; | |
987 | ||
988 | case MOUNT_REMOUNTING_SIGKILL: | |
989 | case MOUNT_UNMOUNTING_SIGKILL: | |
990 | return KILL_KILL; | |
991 | ||
992 | default: | |
993 | return _KILL_OPERATION_INVALID; | |
994 | } | |
995 | } | |
996 | ||
9d2f5178 | 997 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
998 | int r; |
999 | ||
1000 | assert(m); | |
1001 | ||
a0fef983 | 1002 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 1003 | m->result = f; |
e537352b | 1004 | |
cd2086fe LP |
1005 | r = unit_kill_context( |
1006 | UNIT(m), | |
1007 | &m->kill_context, | |
22af0e58 | 1008 | state_to_kill_operation(state), |
cd2086fe LP |
1009 | -1, |
1010 | m->control_pid, | |
1011 | false); | |
1012 | if (r < 0) | |
1013 | goto fail; | |
e537352b | 1014 | |
cd2086fe | 1015 | if (r > 0) { |
36c16a7c | 1016 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 1017 | if (r < 0) |
80876c20 | 1018 | goto fail; |
e537352b | 1019 | |
80876c20 | 1020 | mount_set_state(m, state); |
22af0e58 | 1021 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1022 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 1023 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 1024 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 1025 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1026 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 1027 | else |
22af0e58 | 1028 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1029 | |
1030 | return; | |
1031 | ||
1032 | fail: | |
f2341e0a | 1033 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 1034 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
1035 | } |
1036 | ||
9d2f5178 | 1037 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
1038 | int r; |
1039 | ||
1040 | assert(m); | |
1041 | ||
7d54a03a LP |
1042 | /* Start counting our attempts */ |
1043 | if (!IN_SET(m->state, | |
1044 | MOUNT_UNMOUNTING, | |
1045 | MOUNT_UNMOUNTING_SIGTERM, | |
1046 | MOUNT_UNMOUNTING_SIGKILL)) | |
1047 | m->n_retry_umount = 0; | |
1048 | ||
a16e1123 LP |
1049 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
1050 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 1051 | |
83897d54 | 1052 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
1053 | if (r >= 0 && m->lazy_unmount) |
1054 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
1055 | if (r >= 0 && m->force_unmount) |
1056 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 1057 | if (r < 0) |
e537352b LP |
1058 | goto fail; |
1059 | ||
a16e1123 | 1060 | mount_unwatch_control_pid(m); |
5e94833f | 1061 | |
7d54a03a LP |
1062 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1063 | if (r < 0) | |
e537352b LP |
1064 | goto fail; |
1065 | ||
1066 | mount_set_state(m, MOUNT_UNMOUNTING); | |
1067 | ||
1068 | return; | |
1069 | ||
1070 | fail: | |
f2341e0a | 1071 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 1072 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1073 | } |
1074 | ||
8d567588 | 1075 | static void mount_enter_mounting(Mount *m) { |
e537352b | 1076 | int r; |
cb39ed3f | 1077 | MountParameters *p; |
218cfe23 | 1078 | bool source_is_dir = true; |
e537352b LP |
1079 | |
1080 | assert(m); | |
1081 | ||
25cd4964 | 1082 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
1083 | if (r < 0) |
1084 | goto fail; | |
1085 | ||
218cfe23 DT |
1086 | p = get_mount_parameters_fragment(m); |
1087 | if (p && mount_is_bind(p)) { | |
1088 | r = is_dir(p->what, /* follow = */ true); | |
1089 | if (r < 0 && r != -ENOENT) | |
1090 | log_unit_info_errno(UNIT(m), r, "Failed to determine type of bind mount source '%s', ignoring: %m", p->what); | |
1091 | else if (r == 0) | |
1092 | source_is_dir = false; | |
1093 | } | |
3e5235b0 | 1094 | |
218cfe23 DT |
1095 | if (source_is_dir) |
1096 | (void) mkdir_p_label(m->where, m->directory_mode); | |
1097 | else | |
1098 | (void) touch_file(m->where, /* parents = */ true, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID); | |
1099 | ||
1100 | if (source_is_dir) | |
1101 | unit_warn_if_dir_nonempty(UNIT(m), m->where); | |
4c425434 | 1102 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_start); |
a4634b21 LP |
1103 | |
1104 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
1105 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
1106 | ||
cb39ed3f | 1107 | /* Create the source directory for bind-mounts if needed */ |
5dc60faa AP |
1108 | if (p && mount_is_bind(p)) { |
1109 | r = mkdir_p_label(p->what, m->directory_mode); | |
237ecfee | 1110 | /* mkdir_p_label() can return -EEXIST if the target path exists and is not a directory - which is |
574febda YW |
1111 | * totally OK, in case the user wants us to overmount a non-directory inode. Also -EROFS can be |
1112 | * returned on read-only filesystem. Moreover, -EACCES (and also maybe -EPERM?) may be returned | |
1113 | * when the path is on NFS. See issue #24120. All such errors will be logged in the debug level. */ | |
e5e6b7c2 | 1114 | if (r < 0 && r != -EEXIST) |
574febda YW |
1115 | log_unit_full_errno(UNIT(m), |
1116 | (r == -EROFS || ERRNO_IS_PRIVILEGE(r)) ? LOG_DEBUG : LOG_WARNING, | |
1117 | r, "Failed to make bind mount source '%s', ignoring: %m", p->what); | |
5dc60faa | 1118 | } |
5261ba90 | 1119 | |
b294b79f | 1120 | if (p) { |
17a1c597 ZJS |
1121 | _cleanup_free_ char *opts = NULL; |
1122 | ||
ff0c31bc | 1123 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, NULL, &opts); |
17a1c597 ZJS |
1124 | if (r < 0) |
1125 | goto fail; | |
1126 | ||
b294b79f | 1127 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
1128 | if (r >= 0 && m->sloppy_options) |
1129 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1130 | if (r >= 0 && m->read_write_only) |
1131 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1132 | if (r >= 0 && p->fstype) |
1133 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 1134 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 1135 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 1136 | } else |
e537352b | 1137 | r = -ENOENT; |
e537352b LP |
1138 | if (r < 0) |
1139 | goto fail; | |
1140 | ||
a16e1123 | 1141 | mount_unwatch_control_pid(m); |
5e94833f | 1142 | |
257f1d8e LP |
1143 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1144 | if (r < 0) | |
e537352b LP |
1145 | goto fail; |
1146 | ||
1147 | mount_set_state(m, MOUNT_MOUNTING); | |
1148 | ||
1149 | return; | |
1150 | ||
1151 | fail: | |
f2341e0a | 1152 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1153 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1154 | } |
1155 | ||
850b7410 LP |
1156 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1157 | assert(m); | |
1158 | ||
1159 | /* Only store the first error we encounter */ | |
1160 | if (m->reload_result != MOUNT_SUCCESS) | |
1161 | return; | |
1162 | ||
1163 | m->reload_result = result; | |
1164 | } | |
1165 | ||
9d2f5178 | 1166 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1167 | int r; |
b294b79f | 1168 | MountParameters *p; |
e537352b LP |
1169 | |
1170 | assert(m); | |
1171 | ||
850b7410 LP |
1172 | /* Reset reload result when we are about to start a new remount operation */ |
1173 | m->reload_result = MOUNT_SUCCESS; | |
1174 | ||
a16e1123 LP |
1175 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1176 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1177 | |
b294b79f MO |
1178 | p = get_mount_parameters_fragment(m); |
1179 | if (p) { | |
e537352b LP |
1180 | const char *o; |
1181 | ||
b294b79f MO |
1182 | if (p->options) |
1183 | o = strjoina("remount,", p->options); | |
718db961 | 1184 | else |
e537352b LP |
1185 | o = "remount"; |
1186 | ||
f00929ad | 1187 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1188 | p->what, m->where, |
e86b3761 | 1189 | "-o", o, NULL); |
e86b3761 ZJS |
1190 | if (r >= 0 && m->sloppy_options) |
1191 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1192 | if (r >= 0 && m->read_write_only) |
1193 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1194 | if (r >= 0 && p->fstype) |
1195 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1196 | } else |
e537352b | 1197 | r = -ENOENT; |
60b912f6 | 1198 | if (r < 0) |
e537352b | 1199 | goto fail; |
e537352b | 1200 | |
a16e1123 | 1201 | mount_unwatch_control_pid(m); |
5e94833f | 1202 | |
718db961 LP |
1203 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1204 | if (r < 0) | |
e537352b LP |
1205 | goto fail; |
1206 | ||
1207 | mount_set_state(m, MOUNT_REMOUNTING); | |
1208 | ||
1209 | return; | |
1210 | ||
1211 | fail: | |
f2341e0a | 1212 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1213 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1214 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1215 | } |
1216 | ||
7eba1463 LP |
1217 | static void mount_cycle_clear(Mount *m) { |
1218 | assert(m); | |
1219 | ||
1220 | /* Clear all state we shall forget for this new cycle */ | |
1221 | ||
1222 | m->result = MOUNT_SUCCESS; | |
1223 | m->reload_result = MOUNT_SUCCESS; | |
1224 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1225 | UNIT(m)->reset_accounting = true; | |
1226 | } | |
1227 | ||
e537352b LP |
1228 | static int mount_start(Unit *u) { |
1229 | Mount *m = MOUNT(u); | |
07299350 | 1230 | int r; |
e537352b LP |
1231 | |
1232 | assert(m); | |
1233 | ||
1234 | /* We cannot fulfill this request right now, try again later | |
1235 | * please! */ | |
f2aed307 LP |
1236 | if (IN_SET(m->state, |
1237 | MOUNT_UNMOUNTING, | |
1238 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
1239 | MOUNT_UNMOUNTING_SIGKILL, |
1240 | MOUNT_CLEANING)) | |
e537352b LP |
1241 | return -EAGAIN; |
1242 | ||
1243 | /* Already on it! */ | |
db39a627 | 1244 | if (IN_SET(m->state, MOUNT_MOUNTING, MOUNT_MOUNTING_DONE)) |
e537352b LP |
1245 | return 0; |
1246 | ||
f2aed307 | 1247 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1248 | |
4b58153d LP |
1249 | r = unit_acquire_invocation_id(u); |
1250 | if (r < 0) | |
1251 | return r; | |
1252 | ||
7eba1463 | 1253 | mount_cycle_clear(m); |
8d567588 | 1254 | mount_enter_mounting(m); |
7eba1463 | 1255 | |
82a2b6bb | 1256 | return 1; |
e537352b LP |
1257 | } |
1258 | ||
1259 | static int mount_stop(Unit *u) { | |
1260 | Mount *m = MOUNT(u); | |
1261 | ||
1262 | assert(m); | |
1263 | ||
22af0e58 LP |
1264 | switch (m->state) { |
1265 | ||
1266 | case MOUNT_UNMOUNTING: | |
1267 | case MOUNT_UNMOUNTING_SIGKILL: | |
1268 | case MOUNT_UNMOUNTING_SIGTERM: | |
1269 | /* Already on it */ | |
e537352b LP |
1270 | return 0; |
1271 | ||
22af0e58 LP |
1272 | case MOUNT_MOUNTING: |
1273 | case MOUNT_MOUNTING_DONE: | |
1274 | case MOUNT_REMOUNTING: | |
1275 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1276 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1277 | return 0; | |
e537352b | 1278 | |
22af0e58 LP |
1279 | case MOUNT_REMOUNTING_SIGTERM: |
1280 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1281 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1282 | return 0; | |
1283 | ||
1284 | case MOUNT_REMOUNTING_SIGKILL: | |
1285 | /* as above */ | |
1286 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1287 | return 0; | |
1288 | ||
1289 | case MOUNT_MOUNTED: | |
1290 | mount_enter_unmounting(m); | |
1291 | return 1; | |
1292 | ||
17e9d53d YW |
1293 | case MOUNT_CLEANING: |
1294 | /* If we are currently cleaning, then abort it, brutally. */ | |
1295 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
1296 | return 0; | |
1297 | ||
22af0e58 | 1298 | default: |
04499a70 | 1299 | assert_not_reached(); |
22af0e58 | 1300 | } |
e537352b LP |
1301 | } |
1302 | ||
1303 | static int mount_reload(Unit *u) { | |
1304 | Mount *m = MOUNT(u); | |
1305 | ||
1306 | assert(m); | |
e537352b LP |
1307 | assert(m->state == MOUNT_MOUNTED); |
1308 | ||
9d2f5178 | 1309 | mount_enter_remounting(m); |
22af0e58 | 1310 | |
2d018ae2 | 1311 | return 1; |
e537352b LP |
1312 | } |
1313 | ||
a16e1123 LP |
1314 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1315 | Mount *m = MOUNT(u); | |
1316 | ||
1317 | assert(m); | |
1318 | assert(f); | |
1319 | assert(fds); | |
1320 | ||
d68c645b LP |
1321 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1322 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1323 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1324 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1325 | |
1326 | if (m->control_pid > 0) | |
d68c645b | 1327 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1328 | |
1329 | if (m->control_command_id >= 0) | |
d68c645b | 1330 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1331 | |
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1336 | Mount *m = MOUNT(u); | |
2c09fb81 | 1337 | int r; |
a16e1123 | 1338 | |
c73f413d | 1339 | assert(m); |
a16e1123 LP |
1340 | assert(u); |
1341 | assert(key); | |
1342 | assert(value); | |
1343 | assert(fds); | |
1344 | ||
1345 | if (streq(key, "state")) { | |
1346 | MountState state; | |
1347 | ||
7fb1d980 YW |
1348 | state = mount_state_from_string(value); |
1349 | if (state < 0) | |
1350 | log_unit_debug_errno(u, state, "Failed to parse state value: %s", value); | |
a16e1123 LP |
1351 | else |
1352 | m->deserialized_state = state; | |
2c09fb81 | 1353 | |
9d2f5178 LP |
1354 | } else if (streq(key, "result")) { |
1355 | MountResult f; | |
a16e1123 | 1356 | |
9d2f5178 LP |
1357 | f = mount_result_from_string(value); |
1358 | if (f < 0) | |
7fb1d980 | 1359 | log_unit_debug_errno(u, f, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1360 | else if (f != MOUNT_SUCCESS) |
1361 | m->result = f; | |
1362 | ||
1363 | } else if (streq(key, "reload-result")) { | |
1364 | MountResult f; | |
1365 | ||
1366 | f = mount_result_from_string(value); | |
1367 | if (f < 0) | |
7fb1d980 | 1368 | log_unit_debug_errno(u, f, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1369 | else if (f != MOUNT_SUCCESS) |
1370 | m->reload_result = f; | |
a16e1123 | 1371 | |
2c09fb81 LP |
1372 | } else if (streq(key, "n-retry-umount")) { |
1373 | ||
1374 | r = safe_atou(value, &m->n_retry_umount); | |
1375 | if (r < 0) | |
7fb1d980 | 1376 | log_unit_debug_errno(u, r, "Failed to parse n-retry-umount value: %s", value); |
2c09fb81 | 1377 | |
a16e1123 | 1378 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1379 | |
7fb1d980 YW |
1380 | r = parse_pid(value, &m->control_pid); |
1381 | if (r < 0) | |
1382 | log_unit_debug_errno(u, r, "Failed to parse control-pid value: %s", value); | |
3f459cd9 | 1383 | |
a16e1123 LP |
1384 | } else if (streq(key, "control-command")) { |
1385 | MountExecCommand id; | |
1386 | ||
f2341e0a LP |
1387 | id = mount_exec_command_from_string(value); |
1388 | if (id < 0) | |
7fb1d980 | 1389 | log_unit_debug_errno(u, id, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
1390 | else { |
1391 | m->control_command_id = id; | |
1392 | m->control_command = m->exec_command + id; | |
1393 | } | |
a16e1123 | 1394 | } else |
f2341e0a | 1395 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1396 | |
1397 | return 0; | |
1398 | } | |
1399 | ||
44a6b1b6 | 1400 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1401 | assert(u); |
1402 | ||
1403 | return state_translation_table[MOUNT(u)->state]; | |
1404 | } | |
1405 | ||
44a6b1b6 | 1406 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1407 | assert(u); |
1408 | ||
a16e1123 | 1409 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1410 | } |
1411 | ||
f2f725e5 | 1412 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1413 | Mount *m = MOUNT(u); |
1414 | ||
1415 | assert(m); | |
1416 | ||
f2f725e5 ZJS |
1417 | if (m->from_proc_self_mountinfo) |
1418 | return false; | |
1419 | ||
1420 | return true; | |
701cc384 LP |
1421 | } |
1422 | ||
e537352b LP |
1423 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1424 | Mount *m = MOUNT(u); | |
9d2f5178 | 1425 | MountResult f; |
e537352b LP |
1426 | |
1427 | assert(m); | |
1428 | assert(pid >= 0); | |
1429 | ||
8c47c732 LP |
1430 | if (pid != m->control_pid) |
1431 | return; | |
e537352b | 1432 | |
35080486 LP |
1433 | /* So here's the thing, we really want to know before /usr/bin/mount or /usr/bin/umount exit whether |
1434 | * they established/remove a mount. This is important when mounting, but even more so when unmounting | |
1435 | * since we need to deal with nested mounts and otherwise cannot safely determine whether to repeat | |
1436 | * the unmounts. In theory, the kernel fires /proc/self/mountinfo changes off before returning from | |
1437 | * the mount() or umount() syscalls, and thus we should see the changes to the proc file before we | |
1438 | * process the waitid() for the /usr/bin/(u)mount processes. However, this is unfortunately racy: we | |
1439 | * have to waitid() for processes using P_ALL (since we need to reap unexpected children that got | |
1440 | * reparented to PID 1), but when using P_ALL we might end up reaping processes that terminated just | |
1441 | * instants ago, i.e. already after our last event loop iteration (i.e. after the last point we might | |
1442 | * have noticed /proc/self/mountinfo events via epoll). This means event loop priorities for | |
1443 | * processing SIGCHLD vs. /proc/self/mountinfo IO events are not as relevant as we want. To fix that | |
1444 | * race, let's explicitly scan /proc/self/mountinfo before we start processing /usr/bin/(u)mount | |
1445 | * dying. It's ugly, but it makes our ordering systematic again, and makes sure we always see | |
1446 | * /proc/self/mountinfo changes before our mount/umount exits. */ | |
1447 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1448 | ||
e537352b LP |
1449 | m->control_pid = 0; |
1450 | ||
1f0958f6 | 1451 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1452 | f = MOUNT_SUCCESS; |
1453 | else if (code == CLD_EXITED) | |
1454 | f = MOUNT_FAILURE_EXIT_CODE; | |
1455 | else if (code == CLD_KILLED) | |
1456 | f = MOUNT_FAILURE_SIGNAL; | |
1457 | else if (code == CLD_DUMPED) | |
1458 | f = MOUNT_FAILURE_CORE_DUMP; | |
1459 | else | |
04499a70 | 1460 | assert_not_reached(); |
9d2f5178 | 1461 | |
850b7410 LP |
1462 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1463 | mount_set_reload_result(m, f); | |
1464 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1465 | m->result = f; |
8c47c732 | 1466 | |
a16e1123 | 1467 | if (m->control_command) { |
6ea832a2 | 1468 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1469 | |
a16e1123 LP |
1470 | m->control_command = NULL; |
1471 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1472 | } | |
1473 | ||
91bbd9b7 | 1474 | unit_log_process_exit( |
5cc2cd1c | 1475 | u, |
91bbd9b7 LP |
1476 | "Mount process", |
1477 | mount_exec_command_to_string(m->control_command_id), | |
5cc2cd1c | 1478 | f == MOUNT_SUCCESS, |
91bbd9b7 | 1479 | code, status); |
e537352b | 1480 | |
006aabbd AJ |
1481 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1482 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1483 | |
1484 | switch (m->state) { | |
1485 | ||
1486 | case MOUNT_MOUNTING: | |
006aabbd | 1487 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1488 | |
006aabbd AJ |
1489 | if (f == MOUNT_SUCCESS) { |
1490 | /* Either /bin/mount has an unexpected definition of success, | |
1491 | * or someone raced us and we lost. */ | |
1492 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1493 | f = MOUNT_FAILURE_PROTOCOL; | |
1494 | } | |
1495 | mount_enter_dead(m, f); | |
1496 | break; | |
1497 | ||
1498 | case MOUNT_MOUNTING_DONE: | |
1499 | mount_enter_mounted(m, f); | |
e537352b LP |
1500 | break; |
1501 | ||
e2f3b44c | 1502 | case MOUNT_REMOUNTING: |
e2f3b44c | 1503 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1504 | case MOUNT_REMOUNTING_SIGKILL: |
1505 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1506 | break; |
1507 | ||
e537352b | 1508 | case MOUNT_UNMOUNTING: |
e537352b | 1509 | |
3cc96856 | 1510 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1511 | |
1512 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1513 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1514 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1515 | |
1516 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1517 | log_unit_debug(u, "Mount still present, trying again."); | |
1518 | m->n_retry_umount++; | |
1519 | mount_enter_unmounting(m); | |
1520 | } else { | |
006aabbd | 1521 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1522 | mount_enter_mounted(m, f); |
1523 | } | |
1524 | } else | |
3cc96856 | 1525 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1526 | |
e537352b | 1527 | break; |
57018361 AJ |
1528 | |
1529 | case MOUNT_UNMOUNTING_SIGKILL: | |
1530 | case MOUNT_UNMOUNTING_SIGTERM: | |
1531 | mount_enter_dead_or_mounted(m, f); | |
1532 | break; | |
e537352b | 1533 | |
17e9d53d YW |
1534 | case MOUNT_CLEANING: |
1535 | if (m->clean_result == MOUNT_SUCCESS) | |
1536 | m->clean_result = f; | |
1537 | ||
1538 | mount_enter_dead(m, MOUNT_SUCCESS); | |
1539 | break; | |
1540 | ||
e537352b | 1541 | default: |
04499a70 | 1542 | assert_not_reached(); |
e537352b | 1543 | } |
c4e2ceae LP |
1544 | |
1545 | /* Notify clients about changed exit status */ | |
1546 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1547 | } |
1548 | ||
718db961 LP |
1549 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1550 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1551 | |
1552 | assert(m); | |
718db961 | 1553 | assert(m->timer_event_source == source); |
e537352b LP |
1554 | |
1555 | switch (m->state) { | |
1556 | ||
1557 | case MOUNT_MOUNTING: | |
1558 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1559 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1560 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1561 | break; |
1562 | ||
1563 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1564 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1565 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1566 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1567 | break; |
1568 | ||
22af0e58 LP |
1569 | case MOUNT_REMOUNTING_SIGTERM: |
1570 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1571 | |
4819ff03 | 1572 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1573 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1574 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1575 | } else { |
22af0e58 LP |
1576 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1577 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1578 | } |
e537352b LP |
1579 | break; |
1580 | ||
22af0e58 LP |
1581 | case MOUNT_REMOUNTING_SIGKILL: |
1582 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1583 | |
22af0e58 LP |
1584 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1585 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1586 | break; | |
1587 | ||
1588 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1589 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1590 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1591 | break; |
1592 | ||
1593 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1594 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1595 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1596 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1597 | } else { |
22af0e58 LP |
1598 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1599 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1600 | } |
e537352b LP |
1601 | break; |
1602 | ||
e537352b | 1603 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1604 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1605 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1606 | break; |
1607 | ||
17e9d53d YW |
1608 | case MOUNT_CLEANING: |
1609 | log_unit_warning(UNIT(m), "Cleaning timed out. killing."); | |
1610 | ||
1611 | if (m->clean_result == MOUNT_SUCCESS) | |
1612 | m->clean_result = MOUNT_FAILURE_TIMEOUT; | |
1613 | ||
1614 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, 0); | |
1615 | break; | |
1616 | ||
e537352b | 1617 | default: |
04499a70 | 1618 | assert_not_reached(); |
e537352b | 1619 | } |
718db961 LP |
1620 | |
1621 | return 0; | |
e537352b LP |
1622 | } |
1623 | ||
03b8cfed | 1624 | static int mount_setup_new_unit( |
839ee058 LP |
1625 | Manager *m, |
1626 | const char *name, | |
03b8cfed FB |
1627 | const char *what, |
1628 | const char *where, | |
1629 | const char *options, | |
1630 | const char *fstype, | |
ec88d1ea | 1631 | MountProcFlags *ret_flags, |
839ee058 | 1632 | Unit **ret) { |
03b8cfed | 1633 | |
839ee058 | 1634 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1635 | int r; |
03b8cfed | 1636 | |
839ee058 LP |
1637 | assert(m); |
1638 | assert(name); | |
ec88d1ea | 1639 | assert(ret_flags); |
839ee058 LP |
1640 | assert(ret); |
1641 | ||
1642 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1643 | if (r < 0) | |
1644 | return r; | |
03b8cfed | 1645 | |
e10fe042 LP |
1646 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1647 | if (r < 0) | |
1648 | return r; | |
03b8cfed | 1649 | |
e10fe042 LP |
1650 | r = free_and_strdup(&MOUNT(u)->where, where); |
1651 | if (r < 0) | |
1652 | return r; | |
03b8cfed | 1653 | |
9ddaa3e4 | 1654 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1655 | if (r < 0) |
1656 | return r; | |
03b8cfed | 1657 | |
09f4d843 ZJS |
1658 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the |
1659 | * time we load the unit file for it (and thus add in extra deps right after) we know what source to | |
1660 | * attributes the deps to. */ | |
6d7e89b0 LP |
1661 | MOUNT(u)->from_proc_self_mountinfo = true; |
1662 | ||
b9e6d23d YW |
1663 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
1664 | if (r < 0) | |
1665 | return r; | |
1666 | ||
09f4d843 ZJS |
1667 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything |
1668 | * else is loaded in now. */ | |
cfcd4318 | 1669 | unit_add_to_load_queue(u); |
26e35b16 | 1670 | |
ec88d1ea | 1671 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1672 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1673 | return 0; |
1674 | } | |
1675 | ||
1676 | static int mount_setup_existing_unit( | |
1677 | Unit *u, | |
1678 | const char *what, | |
1679 | const char *where, | |
1680 | const char *options, | |
1681 | const char *fstype, | |
ec88d1ea | 1682 | MountProcFlags *ret_flags) { |
03b8cfed | 1683 | |
bbee24bc | 1684 | int r; |
03b8cfed FB |
1685 | |
1686 | assert(u); | |
4bb68f2f | 1687 | assert(ret_flags); |
03b8cfed FB |
1688 | |
1689 | if (!MOUNT(u)->where) { | |
1690 | MOUNT(u)->where = strdup(where); | |
1691 | if (!MOUNT(u)->where) | |
1692 | return -ENOMEM; | |
1693 | } | |
1694 | ||
4bb68f2f LP |
1695 | /* In case we have multiple mounts established on the same mount point, let's merge flags set already |
1696 | * for the current unit. Note that the flags field is reset on each iteration of reading | |
1697 | * /proc/self/mountinfo, hence we know for sure anything already set here is from the current | |
1698 | * iteration and thus worthy of taking into account. */ | |
1699 | MountProcFlags flags = | |
1700 | MOUNT(u)->proc_flags | MOUNT_PROC_IS_MOUNTED; | |
1701 | ||
9ddaa3e4 | 1702 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1703 | if (r < 0) |
1704 | return r; | |
ec88d1ea LP |
1705 | if (r > 0) |
1706 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1707 | |
4bb68f2f LP |
1708 | /* There are two conditions when we consider a mount point just mounted: when we haven't seen it in |
1709 | * /proc/self/mountinfo before or when MOUNT_MOUNTING is our current state. Why bother with the | |
1710 | * latter? Shouldn't that be covered by the former? No, during reload it is not because we might then | |
1711 | * encounter a new /proc/self/mountinfo in combination with an old mount unit state (since it stems | |
1712 | * from the serialized state), and need to catch up. Since we know that the MOUNT_MOUNTING state is | |
1713 | * reached when we wait for the mount to appear we hence can assume that if we are in it, we are | |
1714 | * actually seeing it established for the first time. */ | |
1715 | if (!MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->state == MOUNT_MOUNTING) | |
ec88d1ea | 1716 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1717 | |
1718 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1719 | |
f8064c4f LP |
1720 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1721 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1722 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1723 | u->load_state = UNIT_LOADED; |
1724 | u->load_error = 0; | |
1725 | ||
ec88d1ea | 1726 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1727 | } |
1728 | ||
ec88d1ea | 1729 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1730 | /* If things changed, then make sure that all deps are regenerated. Let's |
1731 | * first remove all automatic deps, and then add in the new ones. */ | |
bf7eedbf | 1732 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
a3742204 LP |
1733 | if (r < 0) |
1734 | return r; | |
1735 | } | |
03b8cfed | 1736 | |
ec88d1ea | 1737 | *ret_flags = flags; |
03b8cfed FB |
1738 | return 0; |
1739 | } | |
1740 | ||
628c89cc | 1741 | static int mount_setup_unit( |
e537352b LP |
1742 | Manager *m, |
1743 | const char *what, | |
1744 | const char *where, | |
1745 | const char *options, | |
1746 | const char *fstype, | |
e537352b | 1747 | bool set_flags) { |
057d9ab8 | 1748 | |
03b8cfed | 1749 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1750 | MountProcFlags flags; |
057d9ab8 LP |
1751 | Unit *u; |
1752 | int r; | |
b08d03ff | 1753 | |
f50e0a01 | 1754 | assert(m); |
b08d03ff LP |
1755 | assert(what); |
1756 | assert(where); | |
e537352b LP |
1757 | assert(options); |
1758 | assert(fstype); | |
1759 | ||
e537352b LP |
1760 | /* Ignore API mount points. They should never be referenced in |
1761 | * dependencies ever. */ | |
33ff02c9 | 1762 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1763 | return 0; |
b08d03ff | 1764 | |
8d567588 LP |
1765 | if (streq(fstype, "autofs")) |
1766 | return 0; | |
1767 | ||
4e85aff4 LP |
1768 | /* probably some kind of swap, ignore */ |
1769 | if (!is_path(where)) | |
b08d03ff LP |
1770 | return 0; |
1771 | ||
7410616c | 1772 | r = unit_name_from_path(where, ".mount", &e); |
03e52e8c | 1773 | if (r < 0) |
2c905207 | 1774 | return log_struct_errno( |
03e52e8c | 1775 | LOG_WARNING, r, |
2c905207 LP |
1776 | "MESSAGE_ID=" SD_MESSAGE_MOUNT_POINT_PATH_NOT_SUITABLE_STR, |
1777 | "MOUNT_POINT=%s", where, | |
03e52e8c YW |
1778 | LOG_MESSAGE("Failed to generate valid unit name from mount point path '%s', ignoring mount point: %m", |
1779 | where)); | |
b08d03ff | 1780 | |
7d17cfbc | 1781 | u = manager_get_unit(m, e); |
839ee058 | 1782 | if (u) |
03b8cfed | 1783 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 | 1784 | else |
09f4d843 ZJS |
1785 | /* First time we see this mount point meaning that it's not been initiated by a mount unit |
1786 | * but rather by the sysadmin having called mount(8) directly. */ | |
839ee058 | 1787 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); |
03b8cfed | 1788 | if (r < 0) |
2c905207 | 1789 | return log_warning_errno(r, "Failed to set up mount unit for '%s': %m", where); |
ff5f34d0 | 1790 | |
ec88d1ea LP |
1791 | /* If the mount changed properties or state, let's notify our clients */ |
1792 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1793 | unit_add_to_dbus_queue(u); |
c1e1601e | 1794 | |
ec88d1ea LP |
1795 | if (set_flags) |
1796 | MOUNT(u)->proc_flags = flags; | |
1797 | ||
b08d03ff | 1798 | return 0; |
b08d03ff LP |
1799 | } |
1800 | ||
ef734fd6 | 1801 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
13dcfe46 ZJS |
1802 | _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; |
1803 | _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; | |
ba0d56f5 | 1804 | int r; |
b08d03ff LP |
1805 | |
1806 | assert(m); | |
1807 | ||
e2857b3d | 1808 | r = libmount_parse(NULL, NULL, &table, &iter); |
5cca8def | 1809 | if (r < 0) |
628c89cc | 1810 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1811 | |
5cca8def | 1812 | for (;;) { |
95b862b0 | 1813 | struct libmnt_fs *fs; |
8d3ae2bd | 1814 | const char *device, *path, *options, *fstype; |
b08d03ff | 1815 | |
13dcfe46 ZJS |
1816 | r = mnt_table_next_fs(table, iter, &fs); |
1817 | if (r == 1) | |
5cca8def | 1818 | break; |
13dcfe46 ZJS |
1819 | if (r < 0) |
1820 | return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1821 | |
8d3ae2bd CL |
1822 | device = mnt_fs_get_source(fs); |
1823 | path = mnt_fs_get_target(fs); | |
1824 | options = mnt_fs_get_options(fs); | |
1825 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1826 | |
c0a7f8d3 DM |
1827 | if (!device || !path) |
1828 | continue; | |
1829 | ||
9d1b2b22 | 1830 | device_found_node(m, device, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1831 | |
9d1b2b22 | 1832 | (void) mount_setup_unit(m, device, path, options, fstype, set_flags); |
b08d03ff LP |
1833 | } |
1834 | ||
ba0d56f5 | 1835 | return 0; |
e537352b LP |
1836 | } |
1837 | ||
1838 | static void mount_shutdown(Manager *m) { | |
1839 | assert(m); | |
1840 | ||
5dcadb4c | 1841 | m->mount_event_source = sd_event_source_disable_unref(m->mount_event_source); |
718db961 | 1842 | |
d379d442 KZ |
1843 | mnt_unref_monitor(m->mount_monitor); |
1844 | m->mount_monitor = NULL; | |
b08d03ff LP |
1845 | } |
1846 | ||
7a7821c8 | 1847 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1848 | Mount *m = MOUNT(u); |
7a7821c8 | 1849 | usec_t t; |
68db7a3b ZJS |
1850 | int r; |
1851 | ||
c73f413d FS |
1852 | assert(m); |
1853 | assert(u); | |
1854 | ||
68db7a3b ZJS |
1855 | if (!m->timer_event_source) |
1856 | return 0; | |
1857 | ||
7a7821c8 | 1858 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1859 | if (r < 0) |
1860 | return r; | |
7a7821c8 LP |
1861 | if (t == USEC_INFINITY) |
1862 | return 0; | |
68db7a3b | 1863 | |
7a7821c8 | 1864 | *timeout = t; |
68db7a3b ZJS |
1865 | return 1; |
1866 | } | |
1867 | ||
04eb582a | 1868 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1869 | Unit *u; |
1870 | int r; | |
1871 | ||
1872 | assert(m); | |
1873 | ||
1874 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1875 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1876 | ||
1877 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1878 | if (!u) { | |
a581e45a | 1879 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1880 | if (r < 0) { |
1881 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1882 | return; | |
1883 | } | |
11222d0f LP |
1884 | } |
1885 | ||
1886 | u->perpetual = true; | |
1887 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1888 | ||
1889 | unit_add_to_load_queue(u); | |
1890 | unit_add_to_dbus_queue(u); | |
1891 | } | |
1892 | ||
1893 | static bool mount_is_mounted(Mount *m) { | |
1894 | assert(m); | |
1895 | ||
ec88d1ea | 1896 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1897 | } |
1898 | ||
edc027b4 | 1899 | static int mount_on_ratelimit_expire(sd_event_source *s, void *userdata) { |
99534007 | 1900 | Manager *m = ASSERT_PTR(userdata); |
c29e6a95 | 1901 | Job *j; |
edc027b4 | 1902 | |
c29e6a95 MS |
1903 | /* Let's enqueue all start jobs that were previously skipped because of active ratelimit. */ |
1904 | HASHMAP_FOREACH(j, m->jobs) { | |
1905 | if (j->unit->type != UNIT_MOUNT) | |
1906 | continue; | |
1907 | ||
1908 | job_add_to_run_queue(j); | |
1909 | } | |
1910 | ||
b0c4b282 LP |
1911 | /* By entering ratelimited state we made all mount start jobs not runnable, now rate limit is over so |
1912 | * let's make sure we dispatch them in the next iteration. */ | |
1913 | manager_trigger_run_queue(m); | |
edc027b4 MS |
1914 | |
1915 | return 0; | |
1916 | } | |
1917 | ||
ba64af90 | 1918 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1919 | int r; |
d379d442 | 1920 | |
b08d03ff LP |
1921 | assert(m); |
1922 | ||
8d3ae2bd CL |
1923 | mnt_init_debug(0); |
1924 | ||
d379d442 | 1925 | if (!m->mount_monitor) { |
24a4542c | 1926 | unsigned mount_rate_limit_burst = 5; |
d379d442 | 1927 | int fd; |
ef734fd6 | 1928 | |
d379d442 KZ |
1929 | m->mount_monitor = mnt_new_monitor(); |
1930 | if (!m->mount_monitor) { | |
ba64af90 | 1931 | log_oom(); |
718db961 | 1932 | goto fail; |
d379d442 | 1933 | } |
29083707 | 1934 | |
d379d442 | 1935 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1936 | if (r < 0) { |
1937 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1938 | goto fail; |
ba64af90 LP |
1939 | } |
1940 | ||
d379d442 | 1941 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1942 | if (r < 0) { |
1943 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1944 | goto fail; |
ba64af90 | 1945 | } |
90598531 | 1946 | |
d379d442 KZ |
1947 | /* mnt_unref_monitor() will close the fd */ |
1948 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1949 | if (r < 0) { |
1950 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1951 | goto fail; |
ba64af90 | 1952 | } |
befb6d54 | 1953 | |
d379d442 | 1954 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1955 | if (r < 0) { |
1956 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1957 | goto fail; |
ba64af90 | 1958 | } |
befb6d54 | 1959 | |
83231637 | 1960 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1961 | if (r < 0) { |
1962 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1963 | goto fail; |
ba64af90 | 1964 | } |
7dfbe2e3 | 1965 | |
24a4542c LB |
1966 | /* Let users override the default (5 in 1s), as it stalls the boot sequence on busy systems. */ |
1967 | const char *e = secure_getenv("SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST"); | |
1968 | if (e) { | |
1969 | r = safe_atou(e, &mount_rate_limit_burst); | |
1970 | if (r < 0) | |
1971 | log_debug("Invalid value in $SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST, ignoring: %s", e); | |
1972 | } | |
1973 | ||
1974 | r = sd_event_source_set_ratelimit(m->mount_event_source, 1 * USEC_PER_SEC, mount_rate_limit_burst); | |
d586f642 MS |
1975 | if (r < 0) { |
1976 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
1977 | goto fail; | |
1978 | } | |
1979 | ||
edc027b4 MS |
1980 | r = sd_event_source_set_ratelimit_expire_callback(m->mount_event_source, mount_on_ratelimit_expire); |
1981 | if (r < 0) { | |
1982 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
1983 | goto fail; | |
1984 | } | |
1985 | ||
d379d442 | 1986 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1987 | } |
1988 | ||
e62d8c39 ZJS |
1989 | r = mount_load_proc_self_mountinfo(m, false); |
1990 | if (r < 0) | |
b08d03ff LP |
1991 | goto fail; |
1992 | ||
ba64af90 | 1993 | return; |
b08d03ff LP |
1994 | |
1995 | fail: | |
1996 | mount_shutdown(m); | |
5cb5a6ff LP |
1997 | } |
1998 | ||
fcd8e119 LP |
1999 | static int drain_libmount(Manager *m) { |
2000 | bool rescan = false; | |
2001 | int r; | |
2002 | ||
2003 | assert(m); | |
2004 | ||
2005 | /* Drain all events and verify that the event is valid. | |
2006 | * | |
2007 | * Note that libmount also monitors /run/mount mkdir if the directory does not exist yet. The mkdir | |
2008 | * may generate event which is irrelevant for us. | |
2009 | * | |
2010 | * error: r < 0; valid: r == 0, false positive: r == 1 */ | |
2011 | do { | |
2012 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
2013 | if (r < 0) | |
2014 | return log_error_errno(r, "Failed to drain libmount events: %m"); | |
2015 | if (r == 0) | |
2016 | rescan = true; | |
2017 | } while (r == 0); | |
2018 | ||
2019 | return rescan; | |
2020 | } | |
2021 | ||
35080486 | 2022 | static int mount_process_proc_self_mountinfo(Manager *m) { |
6688b72d | 2023 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
ec8126d7 | 2024 | const char *what; |
ef734fd6 LP |
2025 | int r; |
2026 | ||
2027 | assert(m); | |
ef734fd6 | 2028 | |
fcd8e119 LP |
2029 | r = drain_libmount(m); |
2030 | if (r <= 0) | |
2031 | return r; | |
ef734fd6 | 2032 | |
4f0eedb7 ZJS |
2033 | r = mount_load_proc_self_mountinfo(m, true); |
2034 | if (r < 0) { | |
e537352b | 2035 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
2036 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
2037 | MOUNT(u)->proc_flags = 0; | |
e537352b | 2038 | |
ec8126d7 | 2039 | return 0; |
ef734fd6 LP |
2040 | } |
2041 | ||
2042 | manager_dispatch_load_queue(m); | |
2043 | ||
595ed347 MS |
2044 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
2045 | Mount *mount = MOUNT(u); | |
ef734fd6 | 2046 | |
11222d0f | 2047 | if (!mount_is_mounted(mount)) { |
e537352b | 2048 | |
394763f6 LP |
2049 | /* A mount point is not around right now. It |
2050 | * might be gone, or might never have | |
2051 | * existed. */ | |
2052 | ||
2053 | if (mount->from_proc_self_mountinfo && | |
6688b72d | 2054 | mount->parameters_proc_self_mountinfo.what) |
394763f6 | 2055 | /* Remember that this device might just have disappeared */ |
6688b72d | 2056 | if (set_put_strdup_full(&gone, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2057 | log_oom(); /* we don't care too much about OOM here... */ |
fcd8b266 | 2058 | |
ef734fd6 | 2059 | mount->from_proc_self_mountinfo = false; |
9ddaa3e4 | 2060 | assert_se(update_parameters_proc_self_mountinfo(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
2061 | |
2062 | switch (mount->state) { | |
2063 | ||
2064 | case MOUNT_MOUNTED: | |
7eba1463 | 2065 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 2066 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
2067 | break; |
2068 | ||
2fa0bd7d YW |
2069 | case MOUNT_MOUNTING_DONE: |
2070 | /* The mount command may add the corresponding proc mountinfo entry and | |
2071 | * then remove it because of an internal error. E.g., fuse.sshfs seems | |
2072 | * to do that when the connection fails. See #17617. To handle such the | |
2073 | * case, let's once set the state back to mounting. Then, the unit can | |
2074 | * correctly enter the failed state later in mount_sigchld(). */ | |
2075 | mount_set_state(mount, MOUNT_MOUNTING); | |
2076 | break; | |
2077 | ||
e537352b | 2078 | default: |
e537352b | 2079 | break; |
e537352b LP |
2080 | } |
2081 | ||
ec88d1ea | 2082 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 2083 | |
fcd8b266 | 2084 | /* A mount point was added or changed */ |
e537352b LP |
2085 | |
2086 | switch (mount->state) { | |
2087 | ||
2088 | case MOUNT_DEAD: | |
fdf20a31 | 2089 | case MOUNT_FAILED: |
4b58153d LP |
2090 | |
2091 | /* This has just been mounted by somebody else, follow the state change, but let's | |
2092 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
2093 | (void) unit_acquire_invocation_id(u); |
2094 | mount_cycle_clear(mount); | |
9d2f5178 | 2095 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
2096 | break; |
2097 | ||
2098 | case MOUNT_MOUNTING: | |
5bcb0f2b | 2099 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
2100 | break; |
2101 | ||
2102 | default: | |
2103 | /* Nothing really changed, but let's | |
2104 | * issue an notification call | |
2105 | * nonetheless, in case somebody is | |
2106 | * waiting for this. (e.g. file system | |
2107 | * ro/rw remounts.) */ | |
2108 | mount_set_state(mount, mount->state); | |
2109 | break; | |
2110 | } | |
394763f6 | 2111 | } |
fcd8b266 | 2112 | |
11222d0f | 2113 | if (mount_is_mounted(mount) && |
394763f6 | 2114 | mount->from_proc_self_mountinfo && |
6688b72d | 2115 | mount->parameters_proc_self_mountinfo.what) |
b6418dc9 | 2116 | /* Track devices currently used */ |
6688b72d | 2117 | if (set_put_strdup_full(&around, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2118 | log_oom(); |
e537352b LP |
2119 | |
2120 | /* Reset the flags for later calls */ | |
ec88d1ea | 2121 | mount->proc_flags = 0; |
e537352b | 2122 | } |
718db961 | 2123 | |
90e74a66 | 2124 | SET_FOREACH(what, gone) { |
fcd8b266 LP |
2125 | if (set_contains(around, what)) |
2126 | continue; | |
2127 | ||
2128 | /* Let the device units know that the device is no longer mounted */ | |
b1ba0ce8 | 2129 | device_found_node(m, what, DEVICE_NOT_FOUND, DEVICE_FOUND_MOUNT); |
fcd8b266 | 2130 | } |
ec8126d7 ZJS |
2131 | |
2132 | return 0; | |
e537352b LP |
2133 | } |
2134 | ||
35080486 | 2135 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 2136 | Manager *m = ASSERT_PTR(userdata); |
35080486 | 2137 | |
35080486 LP |
2138 | assert(revents & EPOLLIN); |
2139 | ||
2140 | return mount_process_proc_self_mountinfo(m); | |
2141 | } | |
2142 | ||
fdf20a31 | 2143 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
2144 | Mount *m = MOUNT(u); |
2145 | ||
2146 | assert(m); | |
2147 | ||
fdf20a31 | 2148 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
2149 | mount_set_state(m, MOUNT_DEAD); |
2150 | ||
9d2f5178 LP |
2151 | m->result = MOUNT_SUCCESS; |
2152 | m->reload_result = MOUNT_SUCCESS; | |
17e9d53d | 2153 | m->clean_result = MOUNT_SUCCESS; |
5632e374 LP |
2154 | } |
2155 | ||
a721cd00 | 2156 | static int mount_kill(Unit *u, KillWho who, int signo, int code, int value, sd_bus_error *error) { |
22af0e58 LP |
2157 | Mount *m = MOUNT(u); |
2158 | ||
2159 | assert(m); | |
2160 | ||
a721cd00 | 2161 | return unit_kill_common(u, who, signo, code, value, -1, m->control_pid, error); |
8a0867d6 LP |
2162 | } |
2163 | ||
291d565a LP |
2164 | static int mount_control_pid(Unit *u) { |
2165 | Mount *m = MOUNT(u); | |
2166 | ||
2167 | assert(m); | |
2168 | ||
2169 | return m->control_pid; | |
2170 | } | |
2171 | ||
17e9d53d YW |
2172 | static int mount_clean(Unit *u, ExecCleanMask mask) { |
2173 | _cleanup_strv_free_ char **l = NULL; | |
2174 | Mount *m = MOUNT(u); | |
2175 | int r; | |
2176 | ||
2177 | assert(m); | |
2178 | assert(mask != 0); | |
2179 | ||
2180 | if (m->state != MOUNT_DEAD) | |
2181 | return -EBUSY; | |
2182 | ||
2183 | r = exec_context_get_clean_directories(&m->exec_context, u->manager->prefix, mask, &l); | |
2184 | if (r < 0) | |
2185 | return r; | |
2186 | ||
2187 | if (strv_isempty(l)) | |
2188 | return -EUNATCH; | |
2189 | ||
2190 | mount_unwatch_control_pid(m); | |
2191 | m->clean_result = MOUNT_SUCCESS; | |
2192 | m->control_command = NULL; | |
2193 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
2194 | ||
2195 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->exec_context.timeout_clean_usec)); | |
2196 | if (r < 0) | |
2197 | goto fail; | |
2198 | ||
2199 | r = unit_fork_and_watch_rm_rf(u, l, &m->control_pid); | |
2200 | if (r < 0) | |
2201 | goto fail; | |
2202 | ||
2203 | mount_set_state(m, MOUNT_CLEANING); | |
2204 | ||
2205 | return 0; | |
2206 | ||
2207 | fail: | |
2208 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); | |
2209 | m->clean_result = MOUNT_FAILURE_RESOURCES; | |
5dcadb4c | 2210 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
17e9d53d YW |
2211 | return r; |
2212 | } | |
2213 | ||
2214 | static int mount_can_clean(Unit *u, ExecCleanMask *ret) { | |
2215 | Mount *m = MOUNT(u); | |
2216 | ||
2217 | assert(m); | |
2218 | ||
2219 | return exec_context_get_clean_mask(&m->exec_context, ret); | |
2220 | } | |
2221 | ||
705578c3 | 2222 | static int mount_can_start(Unit *u) { |
9727f242 DDM |
2223 | Mount *m = MOUNT(u); |
2224 | int r; | |
2225 | ||
2226 | assert(m); | |
2227 | ||
2228 | r = unit_test_start_limit(u); | |
2229 | if (r < 0) { | |
2230 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
2231 | return r; | |
2232 | } | |
2233 | ||
705578c3 | 2234 | return 1; |
9727f242 DDM |
2235 | } |
2236 | ||
a16e1123 | 2237 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
48d83e33 | 2238 | [MOUNT_EXEC_MOUNT] = "ExecMount", |
a16e1123 LP |
2239 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", |
2240 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
2241 | }; | |
2242 | ||
2243 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
2244 | ||
9d2f5178 | 2245 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
48d83e33 ZJS |
2246 | [MOUNT_SUCCESS] = "success", |
2247 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
2248 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
2249 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
2250 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
2251 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", | |
07299350 | 2252 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 | 2253 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
2254 | }; |
2255 | ||
2256 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
2257 | ||
87f0e418 | 2258 | const UnitVTable mount_vtable = { |
7d17cfbc | 2259 | .object_size = sizeof(Mount), |
718db961 LP |
2260 | .exec_context_offset = offsetof(Mount, exec_context), |
2261 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
2262 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 2263 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
3ef63c31 | 2264 | |
f975e971 LP |
2265 | .sections = |
2266 | "Unit\0" | |
2267 | "Mount\0" | |
2268 | "Install\0", | |
4ad49000 | 2269 | .private_section = "Mount", |
71645aca | 2270 | |
c80a9a33 LP |
2271 | .can_transient = true, |
2272 | .can_fail = true, | |
755021d4 | 2273 | .exclude_from_switch_root_serialization = true, |
c80a9a33 | 2274 | |
e537352b LP |
2275 | .init = mount_init, |
2276 | .load = mount_load, | |
034c6ed7 | 2277 | .done = mount_done, |
e537352b | 2278 | |
f50e0a01 | 2279 | .coldplug = mount_coldplug, |
01400460 | 2280 | .catchup = mount_catchup, |
f50e0a01 | 2281 | |
034c6ed7 | 2282 | .dump = mount_dump, |
5cb5a6ff | 2283 | |
e537352b LP |
2284 | .start = mount_start, |
2285 | .stop = mount_stop, | |
2286 | .reload = mount_reload, | |
2287 | ||
8a0867d6 | 2288 | .kill = mount_kill, |
17e9d53d YW |
2289 | .clean = mount_clean, |
2290 | .can_clean = mount_can_clean, | |
8a0867d6 | 2291 | |
a16e1123 LP |
2292 | .serialize = mount_serialize, |
2293 | .deserialize_item = mount_deserialize_item, | |
2294 | ||
f50e0a01 | 2295 | .active_state = mount_active_state, |
10a94420 | 2296 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2297 | |
52a12341 YW |
2298 | .will_restart = unit_will_restart_default, |
2299 | ||
f2f725e5 | 2300 | .may_gc = mount_may_gc, |
39c79477 | 2301 | .is_extrinsic = mount_is_extrinsic, |
701cc384 | 2302 | |
e537352b | 2303 | .sigchld_event = mount_sigchld_event, |
e537352b | 2304 | |
fdf20a31 | 2305 | .reset_failed = mount_reset_failed, |
291d565a LP |
2306 | |
2307 | .control_pid = mount_control_pid, | |
5632e374 | 2308 | |
74c964d3 LP |
2309 | .bus_set_property = bus_mount_set_property, |
2310 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2311 | |
68db7a3b ZJS |
2312 | .get_timeout = mount_get_timeout, |
2313 | ||
04eb582a | 2314 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2315 | .enumerate = mount_enumerate, |
c6918296 MS |
2316 | .shutdown = mount_shutdown, |
2317 | ||
2318 | .status_message_formats = { | |
2319 | .starting_stopping = { | |
2320 | [0] = "Mounting %s...", | |
2321 | [1] = "Unmounting %s...", | |
2322 | }, | |
2323 | .finished_start_job = { | |
2324 | [JOB_DONE] = "Mounted %s.", | |
2325 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2326 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2327 | }, | |
2328 | .finished_stop_job = { | |
2329 | [JOB_DONE] = "Unmounted %s.", | |
2330 | [JOB_FAILED] = "Failed unmounting %s.", | |
2331 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2332 | }, | |
2333 | }, | |
9727f242 | 2334 | |
705578c3 | 2335 | .can_start = mount_can_start, |
5cb5a6ff | 2336 | }; |