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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 | 124 | assert(p); |
35df78cd | 125 | return fstab_is_bind(p->options, p->fstype); |
fc676b00 ZJS |
126 | } |
127 | ||
47cd17ea | 128 | static bool mount_is_bound_to_device(Mount *m) { |
ebc8968b FB |
129 | const MountParameters *p; |
130 | ||
47cd17ea LP |
131 | assert(m); |
132 | ||
133 | /* Determines whether to place a Requires= or BindsTo= dependency on the backing device unit. We do | |
134 | * this by checking for the x-systemd.device-bound mount option. Iff it is set we use BindsTo=, | |
135 | * otherwise Requires=. But note that we might combine the latter with StopPropagatedFrom=, see | |
136 | * below. */ | |
137 | ||
138 | p = get_mount_parameters(m); | |
139 | if (!p) | |
140 | return false; | |
ebc8968b | 141 | |
ebc8968b FB |
142 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); |
143 | } | |
144 | ||
47cd17ea LP |
145 | static bool mount_propagate_stop(Mount *m) { |
146 | assert(m); | |
147 | ||
148 | if (mount_is_bound_to_device(m)) /* If we are using BindsTo= the stop propagation is implicit, no need to bother */ | |
149 | return false; | |
150 | ||
151 | return m->from_fragment; /* let's propagate stop whenever this is an explicitly configured unit, | |
152 | * otherwise let's not bother. */ | |
153 | } | |
154 | ||
06e457b1 | 155 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
156 | assert(p); |
157 | ||
d72f4a38 | 158 | if (p->fstype && !fstype_needs_quota(p->fstype)) |
fc676b00 ZJS |
159 | return false; |
160 | ||
161 | if (mount_is_bind(p)) | |
162 | return false; | |
163 | ||
d15d0333 ZJS |
164 | return fstab_test_option(p->options, |
165 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
166 | } |
167 | ||
a16e1123 LP |
168 | static void mount_init(Unit *u) { |
169 | Mount *m = MOUNT(u); | |
5cb5a6ff | 170 | |
c73f413d | 171 | assert(m); |
a16e1123 | 172 | assert(u); |
ac155bb8 | 173 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 174 | |
c9e120e0 | 175 | m->timeout_usec = u->manager->defaults.timeout_start_usec; |
5804e1b6 | 176 | |
c9e120e0 LP |
177 | m->exec_context.std_output = u->manager->defaults.std_output; |
178 | m->exec_context.std_error = u->manager->defaults.std_error; | |
5804e1b6 | 179 | |
3e5235b0 LP |
180 | m->directory_mode = 0755; |
181 | ||
f00929ad DJL |
182 | /* We need to make sure that /usr/bin/mount is always called |
183 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
184 | * side doesn't send us another mount request while we are |
185 | * already trying to comply its last one. */ | |
74922904 | 186 | m->exec_context.same_pgrp = true; |
8d567588 | 187 | |
360f384f | 188 | m->control_pid = PIDREF_NULL; |
a16e1123 | 189 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 190 | |
5bcb0f2b | 191 | u->ignore_on_isolate = true; |
8d567588 LP |
192 | } |
193 | ||
36c16a7c | 194 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
195 | int r; |
196 | ||
197 | assert(m); | |
198 | ||
57d2b6a9 YW |
199 | if (usec == USEC_INFINITY) |
200 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_OFF); | |
201 | ||
718db961 | 202 | if (m->timer_event_source) { |
36c16a7c | 203 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
204 | if (r < 0) |
205 | return r; | |
206 | ||
207 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
208 | } | |
209 | ||
7dfbe2e3 | 210 | r = sd_event_add_time( |
6a0f1f6d LP |
211 | UNIT(m)->manager->event, |
212 | &m->timer_event_source, | |
213 | CLOCK_MONOTONIC, | |
36c16a7c | 214 | usec, 0, |
6a0f1f6d | 215 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
216 | if (r < 0) |
217 | return r; | |
218 | ||
219 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
220 | ||
221 | return 0; | |
718db961 LP |
222 | } |
223 | ||
a16e1123 | 224 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
225 | assert(m); |
226 | ||
360f384f | 227 | if (!pidref_is_set(&m->control_pid)) |
5e94833f LP |
228 | return; |
229 | ||
360f384f LP |
230 | unit_unwatch_pid(UNIT(m), m->control_pid.pid); |
231 | pidref_done(&m->control_pid); | |
5e94833f LP |
232 | } |
233 | ||
e537352b LP |
234 | static void mount_parameters_done(MountParameters *p) { |
235 | assert(p); | |
236 | ||
a26592cf LP |
237 | p->what = mfree(p->what); |
238 | p->options = mfree(p->options); | |
239 | p->fstype = mfree(p->fstype); | |
e537352b LP |
240 | } |
241 | ||
87f0e418 | 242 | static void mount_done(Unit *u) { |
ef734fd6 | 243 | Mount *m = MOUNT(u); |
034c6ed7 | 244 | |
ef734fd6 | 245 | assert(m); |
034c6ed7 | 246 | |
a1e58e8e | 247 | m->where = mfree(m->where); |
f50e0a01 | 248 | |
e537352b LP |
249 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
250 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 251 | |
28135da3 | 252 | m->exec_runtime = exec_runtime_free(m->exec_runtime); |
e537352b LP |
253 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
254 | m->control_command = NULL; | |
f50e0a01 | 255 | |
a16e1123 | 256 | mount_unwatch_control_pid(m); |
f50e0a01 | 257 | |
5dcadb4c | 258 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
f50e0a01 LP |
259 | } |
260 | ||
9ddaa3e4 | 261 | static int update_parameters_proc_self_mountinfo( |
b7bbf890 ZJS |
262 | Mount *m, |
263 | const char *what, | |
264 | const char *options, | |
265 | const char *fstype) { | |
266 | ||
267 | MountParameters *p; | |
268 | int r, q, w; | |
269 | ||
270 | p = &m->parameters_proc_self_mountinfo; | |
271 | ||
bcf58ff5 YW |
272 | r = free_and_strdup(&p->what, what); |
273 | if (r < 0) | |
274 | return r; | |
aaf7b0e4 | 275 | |
bcf58ff5 YW |
276 | q = free_and_strdup(&p->options, options); |
277 | if (q < 0) | |
278 | return q; | |
b7bbf890 ZJS |
279 | |
280 | w = free_and_strdup(&p->fstype, fstype); | |
281 | if (w < 0) | |
282 | return w; | |
283 | ||
284 | return r > 0 || q > 0 || w > 0; | |
285 | } | |
286 | ||
eef85c4a | 287 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 288 | MountParameters *pm; |
ac155bb8 | 289 | Unit *other; |
a57f7e2c | 290 | Set *s; |
b08d03ff LP |
291 | int r; |
292 | ||
6e2ef85b | 293 | assert(m); |
b08d03ff | 294 | |
a57f7e2c | 295 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
296 | _cleanup_free_ char *parent = NULL; |
297 | ||
298 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c | 299 | |
45519d13 LP |
300 | r = path_extract_directory(m->where, &parent); |
301 | if (r < 0) | |
302 | return r; | |
01f78473 | 303 | |
eef85c4a | 304 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 305 | if (r < 0) |
01f78473 | 306 | return r; |
4f0eedb7 | 307 | } |
01f78473 | 308 | |
eef85c4a LP |
309 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
310 | * or a loop mount) to be available. */ | |
a57f7e2c | 311 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
312 | if (pm && pm->what && |
313 | path_is_absolute(pm->what) && | |
d3bd0986 | 314 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 315 | |
eef85c4a | 316 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 317 | if (r < 0) |
6e2ef85b | 318 | return r; |
4f0eedb7 | 319 | } |
b08d03ff | 320 | |
eef85c4a | 321 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c | 322 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
90e74a66 | 323 | SET_FOREACH(other, s) { |
b08d03ff | 324 | |
a57f7e2c LP |
325 | if (other->load_state != UNIT_LOADED) |
326 | continue; | |
b08d03ff | 327 | |
a57f7e2c LP |
328 | if (other == UNIT(m)) |
329 | continue; | |
b08d03ff | 330 | |
eef85c4a | 331 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 332 | if (r < 0) |
6e2ef85b | 333 | return r; |
b08d03ff | 334 | |
a57f7e2c LP |
335 | if (UNIT(m)->fragment_path) { |
336 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 337 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
338 | if (r < 0) |
339 | return r; | |
340 | } | |
7c8fa05c LP |
341 | } |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
eef85c4a | 346 | static int mount_add_device_dependencies(Mount *m) { |
87c734ee | 347 | UnitDependencyMask mask; |
eef85c4a | 348 | MountParameters *p; |
ebc8968b | 349 | UnitDependency dep; |
9fff8a1f | 350 | int r; |
173a8d04 LP |
351 | |
352 | assert(m); | |
353 | ||
556b6f4e DDM |
354 | log_unit_trace(UNIT(m), "Processing implicit device dependencies"); |
355 | ||
06e97888 | 356 | p = get_mount_parameters(m); |
556b6f4e DDM |
357 | if (!p) { |
358 | log_unit_trace(UNIT(m), "Missing mount parameters, skipping implicit device dependencies"); | |
173a8d04 | 359 | return 0; |
556b6f4e | 360 | } |
173a8d04 | 361 | |
556b6f4e DDM |
362 | if (!p->what) { |
363 | log_unit_trace(UNIT(m), "Missing mount source, skipping implicit device dependencies"); | |
173a8d04 | 364 | return 0; |
556b6f4e | 365 | } |
5c78d8e2 | 366 | |
556b6f4e DDM |
367 | if (mount_is_bind(p)) { |
368 | log_unit_trace(UNIT(m), "Mount unit is a bind mount, skipping implicit device dependencies"); | |
dd144c63 | 369 | return 0; |
556b6f4e | 370 | } |
dd144c63 | 371 | |
556b6f4e DDM |
372 | if (!is_device_path(p->what)) { |
373 | log_unit_trace(UNIT(m), "Mount source is not a device path, skipping implicit device dependencies"); | |
dd144c63 | 374 | return 0; |
556b6f4e | 375 | } |
dd144c63 | 376 | |
5de0acf4 LP |
377 | /* /dev/root is a really weird thing, it's not a real device, but just a path the kernel exports for |
378 | * the root file system specified on the kernel command line. Ignore it here. */ | |
556b6f4e DDM |
379 | if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs")) { |
380 | log_unit_trace(UNIT(m), "Mount source is in /dev/root or /dev/nfs, skipping implicit device dependencies"); | |
7ba2711d | 381 | return 0; |
556b6f4e | 382 | } |
7ba2711d | 383 | |
556b6f4e DDM |
384 | if (path_equal(m->where, "/")) { |
385 | log_unit_trace(UNIT(m), "Mount destination is '/', skipping implicit device dependencies"); | |
dd144c63 | 386 | return 0; |
556b6f4e | 387 | } |
dd144c63 | 388 | |
44b0d1fd | 389 | /* Mount units from /proc/self/mountinfo are not bound to devices by default since they're subject to |
47cd17ea LP |
390 | * races when mounts are established by other tools with different backing devices than what we |
391 | * maintain. The user can still force this to be a BindsTo= dependency with an appropriate option (or | |
392 | * udev property) so the mount units are automatically stopped when the device disappears | |
44b0d1fd | 393 | * suddenly. */ |
ebc8968b FB |
394 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; |
395 | ||
87c734ee FB |
396 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
397 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; | |
398 | ||
399 | r = unit_add_node_dependency(UNIT(m), p->what, dep, mask); | |
dd144c63 LP |
400 | if (r < 0) |
401 | return r; | |
556b6f4e DDM |
402 | if (r > 0) |
403 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(dep), p->what); | |
404 | ||
47cd17ea | 405 | if (mount_propagate_stop(m)) { |
87c734ee | 406 | r = unit_add_node_dependency(UNIT(m), p->what, UNIT_STOP_PROPAGATED_FROM, mask); |
47cd17ea LP |
407 | if (r < 0) |
408 | return r; | |
556b6f4e DDM |
409 | if (r > 0) |
410 | log_unit_trace(UNIT(m), "Added %s dependency on %s", | |
411 | unit_dependency_to_string(UNIT_STOP_PROPAGATED_FROM), p->what); | |
47cd17ea | 412 | } |
9fff8a1f | 413 | |
87c734ee | 414 | r = unit_add_blockdev_dependency(UNIT(m), p->what, mask); |
556b6f4e DDM |
415 | if (r > 0) |
416 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(UNIT_AFTER), p->what); | |
417 | ||
49267b1b | 418 | return 0; |
173a8d04 LP |
419 | } |
420 | ||
eef85c4a | 421 | static int mount_add_quota_dependencies(Mount *m) { |
6b1dc2bd | 422 | MountParameters *p; |
eef85c4a | 423 | int r; |
6b1dc2bd LP |
424 | |
425 | assert(m); | |
426 | ||
463d0d15 | 427 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
428 | return 0; |
429 | ||
430 | p = get_mount_parameters_fragment(m); | |
431 | if (!p) | |
432 | return 0; | |
433 | ||
06e457b1 | 434 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
435 | return 0; |
436 | ||
c5d82021 FB |
437 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, |
438 | /* add_reference= */ true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
439 | if (r < 0) |
440 | return r; | |
441 | ||
c5d82021 FB |
442 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, |
443 | /* add_reference= */true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
444 | if (r < 0) |
445 | return r; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
39c79477 | 450 | static bool mount_is_extrinsic(Unit *u) { |
88ac30a1 | 451 | MountParameters *p; |
39c79477 | 452 | Mount *m = MOUNT(u); |
ad2706db | 453 | assert(m); |
88ac30a1 | 454 | |
bc9e5a4c FB |
455 | /* Returns true for all units that are "magic" and should be excluded from the usual |
456 | * start-up and shutdown dependencies. We call them "extrinsic" here, as they are generally | |
457 | * mounted outside of the systemd dependency logic. We shouldn't attempt to manage them | |
458 | * ourselves but it's fine if the user operates on them with us. */ | |
ad2706db | 459 | |
bc9e5a4c | 460 | /* We only automatically manage mounts if we are in system mode */ |
39c79477 | 461 | if (MANAGER_IS_USER(u->manager)) |
b8e5776d LP |
462 | return true; |
463 | ||
88ac30a1 | 464 | p = get_mount_parameters(m); |
bc9e5a4c | 465 | if (p && fstab_is_extrinsic(m->where, p->options)) |
ad2706db | 466 | return true; |
88ac30a1 | 467 | |
ad2706db | 468 | return false; |
88ac30a1 TG |
469 | } |
470 | ||
92e64e9a LP |
471 | static bool mount_is_credentials(Mount *m) { |
472 | const char *e; | |
473 | ||
474 | assert(m); | |
475 | ||
476 | /* Returns true if this is a credentials mount. We don't want automatic dependencies on credential | |
477 | * mounts, since they are managed by us for even the earliest services, and we never want anything to | |
478 | * be ordered before them hence. */ | |
479 | ||
480 | e = path_startswith(m->where, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); | |
481 | if (!e) | |
482 | return false; | |
483 | ||
484 | return !isempty(path_startswith(e, "credentials")); | |
485 | } | |
486 | ||
87c734ee | 487 | static int mount_add_default_ordering_dependencies(Mount *m, MountParameters *p, UnitDependencyMask mask) { |
83cdc870 | 488 | const char *after, *before, *e; |
d54bab90 | 489 | int r; |
2edd4434 LP |
490 | |
491 | assert(m); | |
492 | ||
83cdc870 FB |
493 | e = path_startswith(m->where, "/sysroot"); |
494 | if (e && in_initrd()) { | |
495 | /* All mounts under /sysroot need to happen later, at initrd-fs.target time. IOW, | |
496 | * it's not technically part of the basic initrd filesystem itself, and so | |
6e017b19 WF |
497 | * shouldn't inherit the default Before=local-fs.target dependency. However, |
498 | * these mounts still need to start after local-fs-pre.target, as a sync point | |
760e99bb | 499 | * for things like systemd-hibernate-resume.service that should start before |
6e017b19 | 500 | * any mounts. */ |
83cdc870 | 501 | |
6e017b19 | 502 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
83cdc870 FB |
503 | before = isempty(e) ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_INITRD_FS_TARGET; |
504 | ||
dbfc0960 | 505 | } else if (in_initrd() && path_startswith(m->where, "/sysusr/usr")) { |
6e017b19 | 506 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
dbfc0960 YW |
507 | before = SPECIAL_INITRD_USR_FS_TARGET; |
508 | ||
92e64e9a LP |
509 | } else if (mount_is_credentials(m)) |
510 | after = before = NULL; | |
511 | ||
512 | else if (mount_is_network(p)) { | |
ea0ec5ce | 513 | after = SPECIAL_REMOTE_FS_PRE_TARGET; |
d54bab90 | 514 | before = SPECIAL_REMOTE_FS_TARGET; |
2ec15c4f | 515 | |
d54bab90 | 516 | } else { |
ea0ec5ce | 517 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
518 | before = SPECIAL_LOCAL_FS_TARGET; |
519 | } | |
520 | ||
92e64e9a | 521 | if (before && !mount_is_nofail(m)) { |
87c734ee | 522 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, /* add_reference= */ true, mask); |
8c8203db YW |
523 | if (r < 0) |
524 | return r; | |
525 | } | |
ea0ec5ce | 526 | |
92e64e9a LP |
527 | if (after) { |
528 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, /* add_reference= */ true, mask); | |
529 | if (r < 0) | |
530 | return r; | |
531 | } | |
532 | ||
533 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, | |
534 | /* add_reference= */ true, mask); | |
6e017b19 WF |
535 | if (r < 0) |
536 | return r; | |
e8d2f6cd | 537 | |
92e64e9a LP |
538 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
539 | if (streq_ptr(p->fstype, "tmpfs") && !mount_is_credentials(m)) { | |
540 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, | |
541 | /* add_reference= */ true, mask); | |
542 | if (r < 0) | |
543 | return r; | |
544 | } | |
545 | ||
546 | return 0; | |
61154cf9 FB |
547 | } |
548 | ||
75b09529 LP |
549 | static int mount_add_default_network_dependencies(Mount *m, MountParameters *p, UnitDependencyMask mask) { |
550 | int r; | |
551 | ||
552 | assert(m); | |
553 | ||
554 | if (!mount_is_network(p)) | |
555 | return 0; | |
556 | ||
557 | /* We order ourselves after network.target. This is primarily useful at shutdown: services that take | |
558 | * down the network should order themselves before network.target, so that they are shut down only | |
559 | * after this mount unit is stopped. */ | |
560 | ||
561 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, | |
562 | /* add_reference= */ true, mask); | |
6e017b19 WF |
563 | if (r < 0) |
564 | return r; | |
e8d2f6cd | 565 | |
75b09529 LP |
566 | /* We pull in network-online.target, and order ourselves after it. This is useful at start-up to |
567 | * actively pull in tools that want to be started before we start mounting network file systems, and | |
568 | * whose purpose it is to delay this until the network is "up". */ | |
569 | ||
570 | return unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, | |
87c734ee | 571 | /* add_reference= */ true, mask); |
61154cf9 FB |
572 | } |
573 | ||
2edd4434 | 574 | static int mount_add_default_dependencies(Mount *m) { |
87c734ee | 575 | UnitDependencyMask mask; |
9ddc4a26 | 576 | MountParameters *p; |
d54bab90 | 577 | int r; |
2edd4434 LP |
578 | |
579 | assert(m); | |
580 | ||
4c9ea260 LP |
581 | if (!UNIT(m)->default_dependencies) |
582 | return 0; | |
583 | ||
61154cf9 FB |
584 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are |
585 | * guaranteed to stay mounted the whole time, since our system is on it. Also, don't | |
586 | * bother with anything mounted below virtual file systems, it's also going to be virtual, | |
587 | * and hence not worth the effort. */ | |
39c79477 | 588 | if (mount_is_extrinsic(UNIT(m))) |
6b1dc2bd | 589 | return 0; |
2edd4434 | 590 | |
874d3404 LP |
591 | p = get_mount_parameters(m); |
592 | if (!p) | |
6b1dc2bd LP |
593 | return 0; |
594 | ||
87c734ee FB |
595 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; |
596 | ||
597 | r = mount_add_default_ordering_dependencies(m, p, mask); | |
ad2706db LP |
598 | if (r < 0) |
599 | return r; | |
eef85c4a | 600 | |
75b09529 LP |
601 | r = mount_add_default_network_dependencies(m, p, mask); |
602 | if (r < 0) | |
603 | return r; | |
3e3852b3 | 604 | |
84214541 | 605 | return 0; |
2edd4434 LP |
606 | } |
607 | ||
8d567588 | 608 | static int mount_verify(Mount *m) { |
a57f7e2c | 609 | _cleanup_free_ char *e = NULL; |
b294b79f | 610 | MountParameters *p; |
7410616c | 611 | int r; |
a57f7e2c | 612 | |
8d567588 | 613 | assert(m); |
75193d41 | 614 | assert(UNIT(m)->load_state == UNIT_LOADED); |
8d567588 | 615 | |
1df96fcb | 616 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
617 | return -ENOENT; |
618 | ||
7410616c LP |
619 | r = unit_name_from_path(m->where, ".mount", &e); |
620 | if (r < 0) | |
f2341e0a | 621 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 622 | |
d85ff944 YW |
623 | if (!unit_has_name(UNIT(m), e)) |
624 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Where= setting doesn't match unit name. Refusing."); | |
8d567588 | 625 | |
d85ff944 YW |
626 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) |
627 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Cannot create mount unit for API file system %s. Refusing.", m->where); | |
33ff02c9 | 628 | |
b294b79f | 629 | p = get_mount_parameters_fragment(m); |
0879fbd6 LP |
630 | if (p && !p->what && !UNIT(m)->perpetual) |
631 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), | |
632 | "What= setting is missing. Refusing."); | |
4e85aff4 | 633 | |
d85ff944 YW |
634 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) |
635 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); | |
4d0e5dbd | 636 | |
8d567588 LP |
637 | return 0; |
638 | } | |
639 | ||
bf7eedbf LP |
640 | static int mount_add_non_exec_dependencies(Mount *m) { |
641 | int r; | |
49267b1b | 642 | |
bf7eedbf LP |
643 | assert(m); |
644 | ||
9c77ffc7 FB |
645 | /* We may be called due to this mount appearing in /proc/self/mountinfo, hence we clear all existing |
646 | * dependencies that were initialized from the unit file but whose final value really depends on the | |
647 | * content of /proc/self/mountinfo. Some (such as m->where) might have become stale now. */ | |
87c734ee | 648 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO | UNIT_DEPENDENCY_MOUNT_FILE); |
49267b1b YW |
649 | |
650 | if (!m->where) | |
651 | return 0; | |
652 | ||
bf7eedbf LP |
653 | /* Adds in all dependencies directly responsible for ordering the mount, as opposed to dependencies |
654 | * resulting from the ExecContext and such. */ | |
655 | ||
656 | r = mount_add_device_dependencies(m); | |
657 | if (r < 0) | |
658 | return r; | |
659 | ||
660 | r = mount_add_mount_dependencies(m); | |
661 | if (r < 0) | |
662 | return r; | |
663 | ||
664 | r = mount_add_quota_dependencies(m); | |
665 | if (r < 0) | |
666 | return r; | |
667 | ||
668 | r = mount_add_default_dependencies(m); | |
669 | if (r < 0) | |
670 | return r; | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
1a4ac875 MS |
675 | static int mount_add_extras(Mount *m) { |
676 | Unit *u = UNIT(m); | |
e537352b LP |
677 | int r; |
678 | ||
e821075a LP |
679 | assert(m); |
680 | ||
1f736476 LP |
681 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
682 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
683 | * to run with an already set up unit. */ | |
684 | ||
e821075a | 685 | if (u->fragment_path) |
1a4ac875 | 686 | m->from_fragment = true; |
e537352b | 687 | |
1a4ac875 | 688 | if (!m->where) { |
7410616c | 689 | r = unit_name_to_path(u->id, &m->where); |
1d0727e7 MS |
690 | if (r == -ENAMETOOLONG) |
691 | log_unit_error_errno(u, r, "Failed to derive mount point path from unit name, because unit name is hashed. " | |
692 | "Set \"Where=\" in the unit file explicitly."); | |
7410616c LP |
693 | if (r < 0) |
694 | return r; | |
1a4ac875 | 695 | } |
a16e1123 | 696 | |
4ff361cc | 697 | path_simplify(m->where); |
e537352b | 698 | |
e821075a | 699 | if (!u->description) { |
1a4ac875 MS |
700 | r = unit_set_description(u, m->where); |
701 | if (r < 0) | |
173a8d04 | 702 | return r; |
1a4ac875 | 703 | } |
6e2ef85b | 704 | |
598459ce LP |
705 | r = unit_patch_contexts(u); |
706 | if (r < 0) | |
707 | return r; | |
4e67ddd6 | 708 | |
598459ce | 709 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
710 | if (r < 0) |
711 | return r; | |
712 | ||
d79200e2 | 713 | r = unit_set_default_slice(u); |
1a4ac875 MS |
714 | if (r < 0) |
715 | return r; | |
716 | ||
bf7eedbf | 717 | r = mount_add_non_exec_dependencies(m); |
4c9ea260 LP |
718 | if (r < 0) |
719 | return r; | |
598459ce | 720 | |
1a4ac875 MS |
721 | return 0; |
722 | } | |
723 | ||
75193d41 | 724 | static void mount_load_root_mount(Unit *u) { |
11222d0f LP |
725 | assert(u); |
726 | ||
727 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
75193d41 | 728 | return; |
11222d0f LP |
729 | |
730 | u->perpetual = true; | |
731 | u->default_dependencies = false; | |
732 | ||
733 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
734 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
735 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
736 | ||
737 | if (!u->description) | |
738 | u->description = strdup("Root Mount"); | |
11222d0f LP |
739 | } |
740 | ||
1a4ac875 MS |
741 | static int mount_load(Unit *u) { |
742 | Mount *m = MOUNT(u); | |
75193d41 | 743 | int r, q = 0; |
1a4ac875 | 744 | |
c73f413d | 745 | assert(m); |
1a4ac875 MS |
746 | assert(u); |
747 | assert(u->load_state == UNIT_STUB); | |
748 | ||
75193d41 | 749 | mount_load_root_mount(u); |
11222d0f | 750 | |
c3620770 | 751 | bool fragment_optional = m->from_proc_self_mountinfo || u->perpetual; |
75193d41 | 752 | r = unit_load_fragment_and_dropin(u, !fragment_optional); |
780ae022 LP |
753 | |
754 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
755 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
756 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
757 | * 'slice' field for a unit once it is active. */ | |
758 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
75193d41 | 759 | q = mount_add_extras(m); |
780ae022 | 760 | |
1a4ac875 MS |
761 | if (r < 0) |
762 | return r; | |
780ae022 LP |
763 | if (q < 0) |
764 | return q; | |
75193d41 ZJS |
765 | if (u->load_state != UNIT_LOADED) |
766 | return 0; | |
e537352b | 767 | |
8d567588 | 768 | return mount_verify(m); |
e537352b LP |
769 | } |
770 | ||
771 | static void mount_set_state(Mount *m, MountState state) { | |
772 | MountState old_state; | |
773 | assert(m); | |
774 | ||
6fcbec6f LP |
775 | if (m->state != state) |
776 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
777 | ||
e537352b LP |
778 | old_state = m->state; |
779 | m->state = state; | |
780 | ||
c634f3d2 | 781 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
5dcadb4c | 782 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
a16e1123 | 783 | mount_unwatch_control_pid(m); |
e537352b | 784 | m->control_command = NULL; |
a16e1123 | 785 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
786 | } |
787 | ||
788 | if (state != old_state) | |
f2341e0a | 789 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 790 | |
96b09de5 | 791 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
792 | } |
793 | ||
be847e82 | 794 | static int mount_coldplug(Unit *u) { |
e537352b | 795 | Mount *m = MOUNT(u); |
a16e1123 | 796 | int r; |
e537352b LP |
797 | |
798 | assert(m); | |
799 | assert(m->state == MOUNT_DEAD); | |
800 | ||
01400460 | 801 | if (m->deserialized_state == m->state) |
5bcb0f2b | 802 | return 0; |
e537352b | 803 | |
360f384f LP |
804 | if (pidref_is_set(&m->control_pid) && |
805 | pid_is_unwaited(m->control_pid.pid) && | |
01400460 | 806 | MOUNT_STATE_WITH_PROCESS(m->deserialized_state)) { |
5bcb0f2b | 807 | |
360f384f | 808 | r = unit_watch_pid(UNIT(m), m->control_pid.pid, /* exclusive= */ false); |
5bcb0f2b LP |
809 | if (r < 0) |
810 | return r; | |
e537352b | 811 | |
36c16a7c | 812 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
813 | if (r < 0) |
814 | return r; | |
a16e1123 | 815 | } |
e537352b | 816 | |
15220772 | 817 | if (!IN_SET(m->deserialized_state, MOUNT_DEAD, MOUNT_FAILED)) |
e8a565cb | 818 | (void) unit_setup_exec_runtime(u); |
29206d46 | 819 | |
01400460 | 820 | mount_set_state(m, m->deserialized_state); |
e537352b | 821 | return 0; |
e537352b LP |
822 | } |
823 | ||
01400460 YW |
824 | static void mount_catchup(Unit *u) { |
825 | Mount *m = MOUNT(ASSERT_PTR(u)); | |
826 | ||
827 | assert(m); | |
828 | ||
829 | /* Adjust the deserialized state. See comments in mount_process_proc_self_mountinfo(). */ | |
830 | if (m->from_proc_self_mountinfo) | |
831 | switch (m->state) { | |
832 | case MOUNT_DEAD: | |
833 | case MOUNT_FAILED: | |
360f384f | 834 | assert(!pidref_is_set(&m->control_pid)); |
039f4284 | 835 | (void) unit_acquire_invocation_id(u); |
01400460 YW |
836 | mount_cycle_clear(m); |
837 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
838 | break; | |
839 | case MOUNT_MOUNTING: | |
360f384f | 840 | assert(pidref_is_set(&m->control_pid)); |
01400460 YW |
841 | mount_set_state(m, MOUNT_MOUNTING_DONE); |
842 | break; | |
843 | default: | |
844 | break; | |
845 | } | |
846 | else | |
847 | switch (m->state) { | |
848 | case MOUNT_MOUNTING_DONE: | |
360f384f | 849 | assert(pidref_is_set(&m->control_pid)); |
01400460 YW |
850 | mount_set_state(m, MOUNT_MOUNTING); |
851 | break; | |
852 | case MOUNT_MOUNTED: | |
360f384f | 853 | assert(!pidref_is_set(&m->control_pid)); |
01400460 YW |
854 | mount_enter_dead(m, MOUNT_SUCCESS); |
855 | break; | |
856 | default: | |
857 | break; | |
858 | } | |
859 | } | |
860 | ||
e537352b LP |
861 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { |
862 | Mount *m = MOUNT(u); | |
863 | MountParameters *p; | |
864 | ||
865 | assert(m); | |
866 | assert(f); | |
867 | ||
cb39ed3f | 868 | p = get_mount_parameters(m); |
e537352b LP |
869 | |
870 | fprintf(f, | |
871 | "%sMount State: %s\n" | |
81a5c6d0 | 872 | "%sResult: %s\n" |
17e9d53d | 873 | "%sClean Result: %s\n" |
e537352b LP |
874 | "%sWhere: %s\n" |
875 | "%sWhat: %s\n" | |
876 | "%sFile System Type: %s\n" | |
877 | "%sOptions: %s\n" | |
e537352b LP |
878 | "%sFrom /proc/self/mountinfo: %s\n" |
879 | "%sFrom fragment: %s\n" | |
ad2706db | 880 | "%sExtrinsic: %s\n" |
e520950a | 881 | "%sDirectoryMode: %04o\n" |
49915de2 | 882 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 883 | "%sLazyUnmount: %s\n" |
91899792 | 884 | "%sForceUnmount: %s\n" |
c600357b | 885 | "%sReadWriteOnly: %s\n" |
ac8956ef | 886 | "%sTimeoutSec: %s\n", |
a16e1123 | 887 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 888 | prefix, mount_result_to_string(m->result), |
17e9d53d | 889 | prefix, mount_result_to_string(m->clean_result), |
e537352b | 890 | prefix, m->where, |
1e4fc9b1 HH |
891 | prefix, p ? strna(p->what) : "n/a", |
892 | prefix, p ? strna(p->fstype) : "n/a", | |
893 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
894 | prefix, yes_no(m->from_proc_self_mountinfo), |
895 | prefix, yes_no(m->from_fragment), | |
39c79477 | 896 | prefix, yes_no(mount_is_extrinsic(u)), |
e520950a | 897 | prefix, m->directory_mode, |
49915de2 | 898 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 899 | prefix, yes_no(m->lazy_unmount), |
91899792 | 900 | prefix, yes_no(m->force_unmount), |
c600357b | 901 | prefix, yes_no(m->read_write_only), |
5291f26d | 902 | prefix, FORMAT_TIMESPAN(m->timeout_usec, USEC_PER_SEC)); |
e537352b | 903 | |
360f384f | 904 | if (pidref_is_set(&m->control_pid)) |
e537352b | 905 | fprintf(f, |
ccd06097 | 906 | "%sControl PID: "PID_FMT"\n", |
360f384f | 907 | prefix, m->control_pid.pid); |
e537352b LP |
908 | |
909 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 910 | kill_context_dump(&m->kill_context, f, prefix); |
bc0623df | 911 | cgroup_context_dump(UNIT(m), f, prefix); |
e537352b LP |
912 | } |
913 | ||
360f384f | 914 | static int mount_spawn(Mount *m, ExecCommand *c, PidRef *ret_pid) { |
3c7416b6 | 915 | |
b9c04eaf | 916 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b | 917 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
254d1313 ZJS |
918 | .stdin_fd = -EBADF, |
919 | .stdout_fd = -EBADF, | |
920 | .stderr_fd = -EBADF, | |
921 | .exec_fd = -EBADF, | |
9fa95f85 | 922 | }; |
360f384f | 923 | _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL; |
3c7416b6 LP |
924 | pid_t pid; |
925 | int r; | |
a16e1123 LP |
926 | |
927 | assert(m); | |
928 | assert(c); | |
ef25552e | 929 | assert(ret_pid); |
a16e1123 | 930 | |
3c7416b6 | 931 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
932 | if (r < 0) |
933 | return r; | |
934 | ||
36c16a7c | 935 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 936 | if (r < 0) |
36c16a7c | 937 | return r; |
a16e1123 | 938 | |
1ad6e8b3 LP |
939 | r = unit_set_exec_params(UNIT(m), &exec_params); |
940 | if (r < 0) | |
941 | return r; | |
9fa95f85 | 942 | |
f2341e0a LP |
943 | r = exec_spawn(UNIT(m), |
944 | c, | |
4ad49000 | 945 | &m->exec_context, |
9fa95f85 | 946 | &exec_params, |
613b411c | 947 | m->exec_runtime, |
6bb00842 | 948 | &m->cgroup_context, |
4ad49000 LP |
949 | &pid); |
950 | if (r < 0) | |
36c16a7c | 951 | return r; |
a16e1123 | 952 | |
360f384f | 953 | r = pidref_set_pid(&pidref, pid); |
4ad49000 | 954 | if (r < 0) |
36c16a7c | 955 | return r; |
a16e1123 | 956 | |
360f384f LP |
957 | r = unit_watch_pid(UNIT(m), pidref.pid, /* exclusive= */ true); |
958 | if (r < 0) | |
959 | return r; | |
960 | ||
961 | *ret_pid = TAKE_PIDREF(pidref); | |
a16e1123 | 962 | return 0; |
a16e1123 LP |
963 | } |
964 | ||
9d2f5178 | 965 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
966 | assert(m); |
967 | ||
a0fef983 | 968 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 969 | m->result = f; |
e537352b | 970 | |
aac99f30 | 971 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
4c425434 LP |
972 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_stop); |
973 | ||
29206d46 LP |
974 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
975 | ||
28135da3 | 976 | m->exec_runtime = exec_runtime_destroy(m->exec_runtime); |
613b411c | 977 | |
bb0c0d6f | 978 | unit_destroy_runtime_data(UNIT(m), &m->exec_context); |
e66cf1a3 | 979 | |
00d9ef85 LP |
980 | unit_unref_uid_gid(UNIT(m), true); |
981 | ||
49267b1b YW |
982 | /* Any dependencies based on /proc/self/mountinfo are now stale. Let's re-generate dependencies from |
983 | * .mount unit. */ | |
984 | (void) mount_add_non_exec_dependencies(m); | |
e537352b LP |
985 | } |
986 | ||
9d2f5178 | 987 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
988 | assert(m); |
989 | ||
a0fef983 | 990 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 991 | m->result = f; |
80876c20 LP |
992 | |
993 | mount_set_state(m, MOUNT_MOUNTED); | |
994 | } | |
995 | ||
22af0e58 LP |
996 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
997 | assert(m); | |
998 | ||
999 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
1000 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
1001 | * ultimately we just mirror the kernel's internal state on this. */ | |
1002 | ||
1003 | if (m->from_proc_self_mountinfo) | |
1004 | mount_enter_mounted(m, f); | |
1005 | else | |
1006 | mount_enter_dead(m, f); | |
1007 | } | |
1008 | ||
1009 | static int state_to_kill_operation(MountState state) { | |
1010 | switch (state) { | |
1011 | ||
1012 | case MOUNT_REMOUNTING_SIGTERM: | |
a232ebcc ZJS |
1013 | return KILL_RESTART; |
1014 | ||
22af0e58 LP |
1015 | case MOUNT_UNMOUNTING_SIGTERM: |
1016 | return KILL_TERMINATE; | |
1017 | ||
1018 | case MOUNT_REMOUNTING_SIGKILL: | |
1019 | case MOUNT_UNMOUNTING_SIGKILL: | |
1020 | return KILL_KILL; | |
1021 | ||
1022 | default: | |
1023 | return _KILL_OPERATION_INVALID; | |
1024 | } | |
1025 | } | |
1026 | ||
9d2f5178 | 1027 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
1028 | int r; |
1029 | ||
1030 | assert(m); | |
1031 | ||
a0fef983 | 1032 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 1033 | m->result = f; |
e537352b | 1034 | |
cd2086fe LP |
1035 | r = unit_kill_context( |
1036 | UNIT(m), | |
1037 | &m->kill_context, | |
22af0e58 | 1038 | state_to_kill_operation(state), |
7901288a LP |
1039 | /* main_pid= */ NULL, |
1040 | &m->control_pid, | |
1041 | /* main_pid_alien= */ false); | |
cd2086fe LP |
1042 | if (r < 0) |
1043 | goto fail; | |
e537352b | 1044 | |
cd2086fe | 1045 | if (r > 0) { |
36c16a7c | 1046 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 1047 | if (r < 0) |
80876c20 | 1048 | goto fail; |
e537352b | 1049 | |
80876c20 | 1050 | mount_set_state(m, state); |
22af0e58 | 1051 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1052 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 1053 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 1054 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 1055 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1056 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 1057 | else |
22af0e58 | 1058 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1059 | |
1060 | return; | |
1061 | ||
1062 | fail: | |
f2341e0a | 1063 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 1064 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
1065 | } |
1066 | ||
9d2f5178 | 1067 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
1068 | int r; |
1069 | ||
1070 | assert(m); | |
1071 | ||
7d54a03a LP |
1072 | /* Start counting our attempts */ |
1073 | if (!IN_SET(m->state, | |
1074 | MOUNT_UNMOUNTING, | |
1075 | MOUNT_UNMOUNTING_SIGTERM, | |
e323d2e4 | 1076 | MOUNT_UNMOUNTING_SIGKILL)) |
7d54a03a LP |
1077 | m->n_retry_umount = 0; |
1078 | ||
a16e1123 LP |
1079 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
1080 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 1081 | |
83897d54 | 1082 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
1083 | if (r >= 0 && m->lazy_unmount) |
1084 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
1085 | if (r >= 0 && m->force_unmount) |
1086 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 1087 | if (r < 0) |
e537352b LP |
1088 | goto fail; |
1089 | ||
a16e1123 | 1090 | mount_unwatch_control_pid(m); |
5e94833f | 1091 | |
7d54a03a LP |
1092 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1093 | if (r < 0) | |
e537352b LP |
1094 | goto fail; |
1095 | ||
1096 | mount_set_state(m, MOUNT_UNMOUNTING); | |
e323d2e4 | 1097 | |
e537352b LP |
1098 | return; |
1099 | ||
1100 | fail: | |
f2341e0a | 1101 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 1102 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1103 | } |
1104 | ||
8d567588 | 1105 | static void mount_enter_mounting(Mount *m) { |
e537352b | 1106 | int r; |
cb39ed3f | 1107 | MountParameters *p; |
218cfe23 | 1108 | bool source_is_dir = true; |
e537352b LP |
1109 | |
1110 | assert(m); | |
1111 | ||
25cd4964 | 1112 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
1113 | if (r < 0) |
1114 | goto fail; | |
1115 | ||
218cfe23 DT |
1116 | p = get_mount_parameters_fragment(m); |
1117 | if (p && mount_is_bind(p)) { | |
1118 | r = is_dir(p->what, /* follow = */ true); | |
1119 | if (r < 0 && r != -ENOENT) | |
1120 | log_unit_info_errno(UNIT(m), r, "Failed to determine type of bind mount source '%s', ignoring: %m", p->what); | |
1121 | else if (r == 0) | |
1122 | source_is_dir = false; | |
1123 | } | |
3e5235b0 | 1124 | |
218cfe23 DT |
1125 | if (source_is_dir) |
1126 | (void) mkdir_p_label(m->where, m->directory_mode); | |
1127 | else | |
1128 | (void) touch_file(m->where, /* parents = */ true, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID); | |
1129 | ||
1130 | if (source_is_dir) | |
1131 | unit_warn_if_dir_nonempty(UNIT(m), m->where); | |
4c425434 | 1132 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_start); |
a4634b21 LP |
1133 | |
1134 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
1135 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
1136 | ||
cb39ed3f | 1137 | /* Create the source directory for bind-mounts if needed */ |
5dc60faa AP |
1138 | if (p && mount_is_bind(p)) { |
1139 | r = mkdir_p_label(p->what, m->directory_mode); | |
237ecfee | 1140 | /* mkdir_p_label() can return -EEXIST if the target path exists and is not a directory - which is |
574febda YW |
1141 | * totally OK, in case the user wants us to overmount a non-directory inode. Also -EROFS can be |
1142 | * returned on read-only filesystem. Moreover, -EACCES (and also maybe -EPERM?) may be returned | |
1143 | * when the path is on NFS. See issue #24120. All such errors will be logged in the debug level. */ | |
e5e6b7c2 | 1144 | if (r < 0 && r != -EEXIST) |
574febda YW |
1145 | log_unit_full_errno(UNIT(m), |
1146 | (r == -EROFS || ERRNO_IS_PRIVILEGE(r)) ? LOG_DEBUG : LOG_WARNING, | |
1147 | r, "Failed to make bind mount source '%s', ignoring: %m", p->what); | |
5dc60faa | 1148 | } |
5261ba90 | 1149 | |
b294b79f | 1150 | if (p) { |
17a1c597 ZJS |
1151 | _cleanup_free_ char *opts = NULL; |
1152 | ||
ff0c31bc | 1153 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, NULL, &opts); |
17a1c597 ZJS |
1154 | if (r < 0) |
1155 | goto fail; | |
1156 | ||
b294b79f | 1157 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
1158 | if (r >= 0 && m->sloppy_options) |
1159 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1160 | if (r >= 0 && m->read_write_only) |
1161 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1162 | if (r >= 0 && p->fstype) |
1163 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 1164 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 1165 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 1166 | } else |
e537352b | 1167 | r = -ENOENT; |
e537352b LP |
1168 | if (r < 0) |
1169 | goto fail; | |
1170 | ||
a16e1123 | 1171 | mount_unwatch_control_pid(m); |
5e94833f | 1172 | |
257f1d8e LP |
1173 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1174 | if (r < 0) | |
e537352b LP |
1175 | goto fail; |
1176 | ||
1177 | mount_set_state(m, MOUNT_MOUNTING); | |
1178 | ||
1179 | return; | |
1180 | ||
1181 | fail: | |
f2341e0a | 1182 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1183 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1184 | } |
1185 | ||
850b7410 LP |
1186 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1187 | assert(m); | |
1188 | ||
1189 | /* Only store the first error we encounter */ | |
1190 | if (m->reload_result != MOUNT_SUCCESS) | |
1191 | return; | |
1192 | ||
1193 | m->reload_result = result; | |
1194 | } | |
1195 | ||
9d2f5178 | 1196 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1197 | int r; |
b294b79f | 1198 | MountParameters *p; |
e537352b LP |
1199 | |
1200 | assert(m); | |
1201 | ||
850b7410 LP |
1202 | /* Reset reload result when we are about to start a new remount operation */ |
1203 | m->reload_result = MOUNT_SUCCESS; | |
1204 | ||
a16e1123 LP |
1205 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1206 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1207 | |
b294b79f MO |
1208 | p = get_mount_parameters_fragment(m); |
1209 | if (p) { | |
e537352b LP |
1210 | const char *o; |
1211 | ||
b294b79f MO |
1212 | if (p->options) |
1213 | o = strjoina("remount,", p->options); | |
718db961 | 1214 | else |
e537352b LP |
1215 | o = "remount"; |
1216 | ||
f00929ad | 1217 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1218 | p->what, m->where, |
e86b3761 | 1219 | "-o", o, NULL); |
e86b3761 ZJS |
1220 | if (r >= 0 && m->sloppy_options) |
1221 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1222 | if (r >= 0 && m->read_write_only) |
1223 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1224 | if (r >= 0 && p->fstype) |
1225 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1226 | } else |
e537352b | 1227 | r = -ENOENT; |
60b912f6 | 1228 | if (r < 0) |
e537352b | 1229 | goto fail; |
e537352b | 1230 | |
a16e1123 | 1231 | mount_unwatch_control_pid(m); |
5e94833f | 1232 | |
718db961 LP |
1233 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1234 | if (r < 0) | |
e537352b LP |
1235 | goto fail; |
1236 | ||
1237 | mount_set_state(m, MOUNT_REMOUNTING); | |
1238 | ||
1239 | return; | |
1240 | ||
1241 | fail: | |
f2341e0a | 1242 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1243 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1244 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1245 | } |
1246 | ||
7eba1463 LP |
1247 | static void mount_cycle_clear(Mount *m) { |
1248 | assert(m); | |
1249 | ||
1250 | /* Clear all state we shall forget for this new cycle */ | |
1251 | ||
1252 | m->result = MOUNT_SUCCESS; | |
1253 | m->reload_result = MOUNT_SUCCESS; | |
1254 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1255 | UNIT(m)->reset_accounting = true; | |
1256 | } | |
1257 | ||
e537352b LP |
1258 | static int mount_start(Unit *u) { |
1259 | Mount *m = MOUNT(u); | |
07299350 | 1260 | int r; |
e537352b LP |
1261 | |
1262 | assert(m); | |
1263 | ||
1264 | /* We cannot fulfill this request right now, try again later | |
1265 | * please! */ | |
f2aed307 LP |
1266 | if (IN_SET(m->state, |
1267 | MOUNT_UNMOUNTING, | |
1268 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
1269 | MOUNT_UNMOUNTING_SIGKILL, |
1270 | MOUNT_CLEANING)) | |
e537352b LP |
1271 | return -EAGAIN; |
1272 | ||
1273 | /* Already on it! */ | |
db39a627 | 1274 | if (IN_SET(m->state, MOUNT_MOUNTING, MOUNT_MOUNTING_DONE)) |
e537352b LP |
1275 | return 0; |
1276 | ||
f2aed307 | 1277 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1278 | |
4b58153d LP |
1279 | r = unit_acquire_invocation_id(u); |
1280 | if (r < 0) | |
1281 | return r; | |
1282 | ||
7eba1463 | 1283 | mount_cycle_clear(m); |
8d567588 | 1284 | mount_enter_mounting(m); |
7eba1463 | 1285 | |
82a2b6bb | 1286 | return 1; |
e537352b LP |
1287 | } |
1288 | ||
1289 | static int mount_stop(Unit *u) { | |
1290 | Mount *m = MOUNT(u); | |
1291 | ||
1292 | assert(m); | |
1293 | ||
1e122561 YW |
1294 | /* When we directly call umount() for a path, then the state of the corresponding mount unit may be |
1295 | * outdated. Let's re-read mountinfo now and update the state. */ | |
1296 | if (m->invalidated_state) | |
1297 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1298 | ||
22af0e58 LP |
1299 | switch (m->state) { |
1300 | ||
1301 | case MOUNT_UNMOUNTING: | |
1302 | case MOUNT_UNMOUNTING_SIGKILL: | |
1303 | case MOUNT_UNMOUNTING_SIGTERM: | |
1304 | /* Already on it */ | |
e537352b LP |
1305 | return 0; |
1306 | ||
22af0e58 LP |
1307 | case MOUNT_MOUNTING: |
1308 | case MOUNT_MOUNTING_DONE: | |
1309 | case MOUNT_REMOUNTING: | |
1310 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1311 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1312 | return 0; | |
e537352b | 1313 | |
22af0e58 LP |
1314 | case MOUNT_REMOUNTING_SIGTERM: |
1315 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1316 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1317 | return 0; | |
1318 | ||
1319 | case MOUNT_REMOUNTING_SIGKILL: | |
1320 | /* as above */ | |
1321 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1322 | return 0; | |
1323 | ||
1324 | case MOUNT_MOUNTED: | |
1325 | mount_enter_unmounting(m); | |
1326 | return 1; | |
1327 | ||
17e9d53d YW |
1328 | case MOUNT_CLEANING: |
1329 | /* If we are currently cleaning, then abort it, brutally. */ | |
1330 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
1331 | return 0; | |
1332 | ||
1e122561 YW |
1333 | case MOUNT_DEAD: |
1334 | case MOUNT_FAILED: | |
1335 | /* The mount has just been unmounted by somebody else. */ | |
1336 | return 0; | |
1337 | ||
22af0e58 | 1338 | default: |
04499a70 | 1339 | assert_not_reached(); |
22af0e58 | 1340 | } |
e537352b LP |
1341 | } |
1342 | ||
1343 | static int mount_reload(Unit *u) { | |
1344 | Mount *m = MOUNT(u); | |
1345 | ||
1346 | assert(m); | |
e537352b LP |
1347 | assert(m->state == MOUNT_MOUNTED); |
1348 | ||
9d2f5178 | 1349 | mount_enter_remounting(m); |
22af0e58 | 1350 | |
2d018ae2 | 1351 | return 1; |
e537352b LP |
1352 | } |
1353 | ||
a16e1123 LP |
1354 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1355 | Mount *m = MOUNT(u); | |
1356 | ||
1357 | assert(m); | |
1358 | assert(f); | |
1359 | assert(fds); | |
1360 | ||
d68c645b LP |
1361 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1362 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1363 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1364 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 | 1365 | |
360f384f LP |
1366 | if (pidref_is_set(&m->control_pid)) |
1367 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid.pid); | |
a16e1123 LP |
1368 | |
1369 | if (m->control_command_id >= 0) | |
d68c645b | 1370 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1371 | |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1376 | Mount *m = MOUNT(u); | |
2c09fb81 | 1377 | int r; |
a16e1123 | 1378 | |
c73f413d | 1379 | assert(m); |
a16e1123 LP |
1380 | assert(u); |
1381 | assert(key); | |
1382 | assert(value); | |
1383 | assert(fds); | |
1384 | ||
1385 | if (streq(key, "state")) { | |
1386 | MountState state; | |
1387 | ||
7fb1d980 YW |
1388 | state = mount_state_from_string(value); |
1389 | if (state < 0) | |
1390 | log_unit_debug_errno(u, state, "Failed to parse state value: %s", value); | |
a16e1123 LP |
1391 | else |
1392 | m->deserialized_state = state; | |
2c09fb81 | 1393 | |
9d2f5178 LP |
1394 | } else if (streq(key, "result")) { |
1395 | MountResult f; | |
a16e1123 | 1396 | |
9d2f5178 LP |
1397 | f = mount_result_from_string(value); |
1398 | if (f < 0) | |
7fb1d980 | 1399 | log_unit_debug_errno(u, f, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1400 | else if (f != MOUNT_SUCCESS) |
1401 | m->result = f; | |
1402 | ||
1403 | } else if (streq(key, "reload-result")) { | |
1404 | MountResult f; | |
1405 | ||
1406 | f = mount_result_from_string(value); | |
1407 | if (f < 0) | |
7fb1d980 | 1408 | log_unit_debug_errno(u, f, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1409 | else if (f != MOUNT_SUCCESS) |
1410 | m->reload_result = f; | |
a16e1123 | 1411 | |
2c09fb81 LP |
1412 | } else if (streq(key, "n-retry-umount")) { |
1413 | ||
1414 | r = safe_atou(value, &m->n_retry_umount); | |
1415 | if (r < 0) | |
7fb1d980 | 1416 | log_unit_debug_errno(u, r, "Failed to parse n-retry-umount value: %s", value); |
2c09fb81 | 1417 | |
a16e1123 | 1418 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1419 | |
360f384f LP |
1420 | pidref_done(&m->control_pid); |
1421 | r = pidref_set_pidstr(&m->control_pid, value); | |
7fb1d980 | 1422 | if (r < 0) |
360f384f | 1423 | log_debug_errno(r, "Failed to set control PID to '%s': %m", value); |
3f459cd9 | 1424 | |
a16e1123 LP |
1425 | } else if (streq(key, "control-command")) { |
1426 | MountExecCommand id; | |
1427 | ||
f2341e0a LP |
1428 | id = mount_exec_command_from_string(value); |
1429 | if (id < 0) | |
7fb1d980 | 1430 | log_unit_debug_errno(u, id, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
1431 | else { |
1432 | m->control_command_id = id; | |
1433 | m->control_command = m->exec_command + id; | |
1434 | } | |
a16e1123 | 1435 | } else |
f2341e0a | 1436 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1437 | |
1438 | return 0; | |
1439 | } | |
1440 | ||
d1e8e8b5 | 1441 | static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1442 | assert(u); |
1443 | ||
1444 | return state_translation_table[MOUNT(u)->state]; | |
1445 | } | |
1446 | ||
d1e8e8b5 | 1447 | static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1448 | assert(u); |
1449 | ||
a16e1123 | 1450 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1451 | } |
1452 | ||
d1e8e8b5 | 1453 | static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1454 | Mount *m = MOUNT(u); |
1455 | ||
1456 | assert(m); | |
1457 | ||
f2f725e5 ZJS |
1458 | if (m->from_proc_self_mountinfo) |
1459 | return false; | |
1460 | ||
1461 | return true; | |
701cc384 LP |
1462 | } |
1463 | ||
e537352b LP |
1464 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1465 | Mount *m = MOUNT(u); | |
9d2f5178 | 1466 | MountResult f; |
e537352b LP |
1467 | |
1468 | assert(m); | |
1469 | assert(pid >= 0); | |
1470 | ||
360f384f | 1471 | if (pid != m->control_pid.pid) |
8c47c732 | 1472 | return; |
e537352b | 1473 | |
35080486 LP |
1474 | /* So here's the thing, we really want to know before /usr/bin/mount or /usr/bin/umount exit whether |
1475 | * they established/remove a mount. This is important when mounting, but even more so when unmounting | |
1476 | * since we need to deal with nested mounts and otherwise cannot safely determine whether to repeat | |
1477 | * the unmounts. In theory, the kernel fires /proc/self/mountinfo changes off before returning from | |
1478 | * the mount() or umount() syscalls, and thus we should see the changes to the proc file before we | |
1479 | * process the waitid() for the /usr/bin/(u)mount processes. However, this is unfortunately racy: we | |
1480 | * have to waitid() for processes using P_ALL (since we need to reap unexpected children that got | |
1481 | * reparented to PID 1), but when using P_ALL we might end up reaping processes that terminated just | |
1482 | * instants ago, i.e. already after our last event loop iteration (i.e. after the last point we might | |
1483 | * have noticed /proc/self/mountinfo events via epoll). This means event loop priorities for | |
1484 | * processing SIGCHLD vs. /proc/self/mountinfo IO events are not as relevant as we want. To fix that | |
1485 | * race, let's explicitly scan /proc/self/mountinfo before we start processing /usr/bin/(u)mount | |
1486 | * dying. It's ugly, but it makes our ordering systematic again, and makes sure we always see | |
1487 | * /proc/self/mountinfo changes before our mount/umount exits. */ | |
1488 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1489 | ||
360f384f | 1490 | pidref_done(&m->control_pid); |
e537352b | 1491 | |
1f0958f6 | 1492 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1493 | f = MOUNT_SUCCESS; |
1494 | else if (code == CLD_EXITED) | |
1495 | f = MOUNT_FAILURE_EXIT_CODE; | |
1496 | else if (code == CLD_KILLED) | |
1497 | f = MOUNT_FAILURE_SIGNAL; | |
1498 | else if (code == CLD_DUMPED) | |
1499 | f = MOUNT_FAILURE_CORE_DUMP; | |
1500 | else | |
04499a70 | 1501 | assert_not_reached(); |
9d2f5178 | 1502 | |
850b7410 LP |
1503 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1504 | mount_set_reload_result(m, f); | |
1505 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1506 | m->result = f; |
8c47c732 | 1507 | |
a16e1123 | 1508 | if (m->control_command) { |
6ea832a2 | 1509 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1510 | |
a16e1123 LP |
1511 | m->control_command = NULL; |
1512 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1513 | } | |
1514 | ||
91bbd9b7 | 1515 | unit_log_process_exit( |
5cc2cd1c | 1516 | u, |
91bbd9b7 LP |
1517 | "Mount process", |
1518 | mount_exec_command_to_string(m->control_command_id), | |
5cc2cd1c | 1519 | f == MOUNT_SUCCESS, |
91bbd9b7 | 1520 | code, status); |
e537352b | 1521 | |
006aabbd AJ |
1522 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1523 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1524 | |
1525 | switch (m->state) { | |
1526 | ||
1527 | case MOUNT_MOUNTING: | |
006aabbd | 1528 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1529 | |
006aabbd AJ |
1530 | if (f == MOUNT_SUCCESS) { |
1531 | /* Either /bin/mount has an unexpected definition of success, | |
1532 | * or someone raced us and we lost. */ | |
1533 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1534 | f = MOUNT_FAILURE_PROTOCOL; | |
1535 | } | |
1536 | mount_enter_dead(m, f); | |
1537 | break; | |
1538 | ||
1539 | case MOUNT_MOUNTING_DONE: | |
1540 | mount_enter_mounted(m, f); | |
e537352b LP |
1541 | break; |
1542 | ||
e2f3b44c | 1543 | case MOUNT_REMOUNTING: |
e2f3b44c | 1544 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1545 | case MOUNT_REMOUNTING_SIGKILL: |
1546 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1547 | break; |
1548 | ||
e537352b | 1549 | case MOUNT_UNMOUNTING: |
e537352b | 1550 | |
3cc96856 | 1551 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1552 | |
1553 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1554 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1555 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1556 | |
1557 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1558 | log_unit_debug(u, "Mount still present, trying again."); | |
1559 | m->n_retry_umount++; | |
1560 | mount_enter_unmounting(m); | |
1561 | } else { | |
006aabbd | 1562 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1563 | mount_enter_mounted(m, f); |
1564 | } | |
1565 | } else | |
3cc96856 | 1566 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1567 | |
e537352b | 1568 | break; |
57018361 AJ |
1569 | |
1570 | case MOUNT_UNMOUNTING_SIGKILL: | |
1571 | case MOUNT_UNMOUNTING_SIGTERM: | |
1572 | mount_enter_dead_or_mounted(m, f); | |
1573 | break; | |
e537352b | 1574 | |
17e9d53d YW |
1575 | case MOUNT_CLEANING: |
1576 | if (m->clean_result == MOUNT_SUCCESS) | |
1577 | m->clean_result = f; | |
1578 | ||
1579 | mount_enter_dead(m, MOUNT_SUCCESS); | |
1580 | break; | |
1581 | ||
e537352b | 1582 | default: |
04499a70 | 1583 | assert_not_reached(); |
e537352b | 1584 | } |
c4e2ceae LP |
1585 | |
1586 | /* Notify clients about changed exit status */ | |
1587 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1588 | } |
1589 | ||
718db961 LP |
1590 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1591 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1592 | |
1593 | assert(m); | |
718db961 | 1594 | assert(m->timer_event_source == source); |
e537352b LP |
1595 | |
1596 | switch (m->state) { | |
1597 | ||
1598 | case MOUNT_MOUNTING: | |
1599 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1600 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1601 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1602 | break; |
1603 | ||
1604 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1605 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1606 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1607 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1608 | break; |
1609 | ||
22af0e58 LP |
1610 | case MOUNT_REMOUNTING_SIGTERM: |
1611 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1612 | |
4819ff03 | 1613 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1614 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1615 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1616 | } else { |
22af0e58 LP |
1617 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1618 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1619 | } |
e537352b LP |
1620 | break; |
1621 | ||
22af0e58 LP |
1622 | case MOUNT_REMOUNTING_SIGKILL: |
1623 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1624 | |
22af0e58 LP |
1625 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1626 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1627 | break; | |
1628 | ||
1629 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1630 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1631 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1632 | break; |
1633 | ||
1634 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1635 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1636 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1637 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1638 | } else { |
22af0e58 LP |
1639 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1640 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1641 | } |
e537352b LP |
1642 | break; |
1643 | ||
e537352b | 1644 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1645 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1646 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1647 | break; |
1648 | ||
17e9d53d YW |
1649 | case MOUNT_CLEANING: |
1650 | log_unit_warning(UNIT(m), "Cleaning timed out. killing."); | |
1651 | ||
1652 | if (m->clean_result == MOUNT_SUCCESS) | |
1653 | m->clean_result = MOUNT_FAILURE_TIMEOUT; | |
1654 | ||
1655 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, 0); | |
1656 | break; | |
1657 | ||
e537352b | 1658 | default: |
04499a70 | 1659 | assert_not_reached(); |
e537352b | 1660 | } |
718db961 LP |
1661 | |
1662 | return 0; | |
e537352b LP |
1663 | } |
1664 | ||
03b8cfed | 1665 | static int mount_setup_new_unit( |
839ee058 LP |
1666 | Manager *m, |
1667 | const char *name, | |
03b8cfed FB |
1668 | const char *what, |
1669 | const char *where, | |
1670 | const char *options, | |
1671 | const char *fstype, | |
ec88d1ea | 1672 | MountProcFlags *ret_flags, |
839ee058 | 1673 | Unit **ret) { |
03b8cfed | 1674 | |
839ee058 | 1675 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1676 | int r; |
03b8cfed | 1677 | |
839ee058 LP |
1678 | assert(m); |
1679 | assert(name); | |
ec88d1ea | 1680 | assert(ret_flags); |
839ee058 LP |
1681 | assert(ret); |
1682 | ||
1683 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1684 | if (r < 0) | |
1685 | return r; | |
03b8cfed | 1686 | |
e10fe042 LP |
1687 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1688 | if (r < 0) | |
1689 | return r; | |
03b8cfed | 1690 | |
e10fe042 LP |
1691 | r = free_and_strdup(&MOUNT(u)->where, where); |
1692 | if (r < 0) | |
1693 | return r; | |
03b8cfed | 1694 | |
9ddaa3e4 | 1695 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1696 | if (r < 0) |
1697 | return r; | |
03b8cfed | 1698 | |
09f4d843 ZJS |
1699 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the |
1700 | * time we load the unit file for it (and thus add in extra deps right after) we know what source to | |
1701 | * attributes the deps to. */ | |
6d7e89b0 LP |
1702 | MOUNT(u)->from_proc_self_mountinfo = true; |
1703 | ||
b9e6d23d YW |
1704 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
1705 | if (r < 0) | |
1706 | return r; | |
1707 | ||
09f4d843 ZJS |
1708 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything |
1709 | * else is loaded in now. */ | |
cfcd4318 | 1710 | unit_add_to_load_queue(u); |
26e35b16 | 1711 | |
ec88d1ea | 1712 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1713 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1714 | return 0; |
1715 | } | |
1716 | ||
1717 | static int mount_setup_existing_unit( | |
1718 | Unit *u, | |
1719 | const char *what, | |
1720 | const char *where, | |
1721 | const char *options, | |
1722 | const char *fstype, | |
ec88d1ea | 1723 | MountProcFlags *ret_flags) { |
03b8cfed | 1724 | |
bbee24bc | 1725 | int r; |
03b8cfed FB |
1726 | |
1727 | assert(u); | |
4bb68f2f | 1728 | assert(ret_flags); |
03b8cfed FB |
1729 | |
1730 | if (!MOUNT(u)->where) { | |
1731 | MOUNT(u)->where = strdup(where); | |
1732 | if (!MOUNT(u)->where) | |
1733 | return -ENOMEM; | |
1734 | } | |
1735 | ||
4bb68f2f LP |
1736 | /* In case we have multiple mounts established on the same mount point, let's merge flags set already |
1737 | * for the current unit. Note that the flags field is reset on each iteration of reading | |
1738 | * /proc/self/mountinfo, hence we know for sure anything already set here is from the current | |
1739 | * iteration and thus worthy of taking into account. */ | |
1740 | MountProcFlags flags = | |
1741 | MOUNT(u)->proc_flags | MOUNT_PROC_IS_MOUNTED; | |
1742 | ||
9ddaa3e4 | 1743 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1744 | if (r < 0) |
1745 | return r; | |
ec88d1ea LP |
1746 | if (r > 0) |
1747 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1748 | |
4bb68f2f LP |
1749 | /* There are two conditions when we consider a mount point just mounted: when we haven't seen it in |
1750 | * /proc/self/mountinfo before or when MOUNT_MOUNTING is our current state. Why bother with the | |
1751 | * latter? Shouldn't that be covered by the former? No, during reload it is not because we might then | |
1752 | * encounter a new /proc/self/mountinfo in combination with an old mount unit state (since it stems | |
1753 | * from the serialized state), and need to catch up. Since we know that the MOUNT_MOUNTING state is | |
1754 | * reached when we wait for the mount to appear we hence can assume that if we are in it, we are | |
1755 | * actually seeing it established for the first time. */ | |
1756 | if (!MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->state == MOUNT_MOUNTING) | |
ec88d1ea | 1757 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1758 | |
1759 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1760 | |
f8064c4f LP |
1761 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1762 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1763 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1764 | u->load_state = UNIT_LOADED; |
1765 | u->load_error = 0; | |
1766 | ||
ec88d1ea | 1767 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1768 | } |
1769 | ||
ec88d1ea | 1770 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1771 | /* If things changed, then make sure that all deps are regenerated. Let's |
1772 | * first remove all automatic deps, and then add in the new ones. */ | |
bf7eedbf | 1773 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
a3742204 LP |
1774 | if (r < 0) |
1775 | return r; | |
1776 | } | |
03b8cfed | 1777 | |
ec88d1ea | 1778 | *ret_flags = flags; |
03b8cfed FB |
1779 | return 0; |
1780 | } | |
1781 | ||
628c89cc | 1782 | static int mount_setup_unit( |
e537352b LP |
1783 | Manager *m, |
1784 | const char *what, | |
1785 | const char *where, | |
1786 | const char *options, | |
1787 | const char *fstype, | |
e537352b | 1788 | bool set_flags) { |
057d9ab8 | 1789 | |
03b8cfed | 1790 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1791 | MountProcFlags flags; |
057d9ab8 LP |
1792 | Unit *u; |
1793 | int r; | |
b08d03ff | 1794 | |
f50e0a01 | 1795 | assert(m); |
b08d03ff LP |
1796 | assert(what); |
1797 | assert(where); | |
e537352b LP |
1798 | assert(options); |
1799 | assert(fstype); | |
1800 | ||
e537352b LP |
1801 | /* Ignore API mount points. They should never be referenced in |
1802 | * dependencies ever. */ | |
33ff02c9 | 1803 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1804 | return 0; |
b08d03ff | 1805 | |
8d567588 LP |
1806 | if (streq(fstype, "autofs")) |
1807 | return 0; | |
1808 | ||
4e85aff4 LP |
1809 | /* probably some kind of swap, ignore */ |
1810 | if (!is_path(where)) | |
b08d03ff LP |
1811 | return 0; |
1812 | ||
7410616c | 1813 | r = unit_name_from_path(where, ".mount", &e); |
03e52e8c | 1814 | if (r < 0) |
2c905207 | 1815 | return log_struct_errno( |
03e52e8c | 1816 | LOG_WARNING, r, |
2c905207 LP |
1817 | "MESSAGE_ID=" SD_MESSAGE_MOUNT_POINT_PATH_NOT_SUITABLE_STR, |
1818 | "MOUNT_POINT=%s", where, | |
03e52e8c YW |
1819 | LOG_MESSAGE("Failed to generate valid unit name from mount point path '%s', ignoring mount point: %m", |
1820 | where)); | |
b08d03ff | 1821 | |
7d17cfbc | 1822 | u = manager_get_unit(m, e); |
839ee058 | 1823 | if (u) |
03b8cfed | 1824 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 | 1825 | else |
09f4d843 ZJS |
1826 | /* First time we see this mount point meaning that it's not been initiated by a mount unit |
1827 | * but rather by the sysadmin having called mount(8) directly. */ | |
839ee058 | 1828 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); |
03b8cfed | 1829 | if (r < 0) |
2c905207 | 1830 | return log_warning_errno(r, "Failed to set up mount unit for '%s': %m", where); |
ff5f34d0 | 1831 | |
ec88d1ea LP |
1832 | /* If the mount changed properties or state, let's notify our clients */ |
1833 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1834 | unit_add_to_dbus_queue(u); |
c1e1601e | 1835 | |
ec88d1ea LP |
1836 | if (set_flags) |
1837 | MOUNT(u)->proc_flags = flags; | |
1838 | ||
b08d03ff | 1839 | return 0; |
b08d03ff LP |
1840 | } |
1841 | ||
ef734fd6 | 1842 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
13dcfe46 ZJS |
1843 | _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; |
1844 | _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; | |
ba0d56f5 | 1845 | int r; |
b08d03ff LP |
1846 | |
1847 | assert(m); | |
1848 | ||
e2857b3d | 1849 | r = libmount_parse(NULL, NULL, &table, &iter); |
5cca8def | 1850 | if (r < 0) |
628c89cc | 1851 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1852 | |
5cca8def | 1853 | for (;;) { |
95b862b0 | 1854 | struct libmnt_fs *fs; |
8d3ae2bd | 1855 | const char *device, *path, *options, *fstype; |
b08d03ff | 1856 | |
13dcfe46 ZJS |
1857 | r = mnt_table_next_fs(table, iter, &fs); |
1858 | if (r == 1) | |
5cca8def | 1859 | break; |
13dcfe46 ZJS |
1860 | if (r < 0) |
1861 | return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1862 | |
8d3ae2bd CL |
1863 | device = mnt_fs_get_source(fs); |
1864 | path = mnt_fs_get_target(fs); | |
1865 | options = mnt_fs_get_options(fs); | |
1866 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1867 | |
c0a7f8d3 DM |
1868 | if (!device || !path) |
1869 | continue; | |
1870 | ||
9d1b2b22 | 1871 | device_found_node(m, device, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1872 | |
9d1b2b22 | 1873 | (void) mount_setup_unit(m, device, path, options, fstype, set_flags); |
b08d03ff LP |
1874 | } |
1875 | ||
ba0d56f5 | 1876 | return 0; |
e537352b LP |
1877 | } |
1878 | ||
1879 | static void mount_shutdown(Manager *m) { | |
1880 | assert(m); | |
1881 | ||
5dcadb4c | 1882 | m->mount_event_source = sd_event_source_disable_unref(m->mount_event_source); |
718db961 | 1883 | |
d379d442 KZ |
1884 | mnt_unref_monitor(m->mount_monitor); |
1885 | m->mount_monitor = NULL; | |
b08d03ff LP |
1886 | } |
1887 | ||
7a7821c8 | 1888 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1889 | Mount *m = MOUNT(u); |
7a7821c8 | 1890 | usec_t t; |
68db7a3b ZJS |
1891 | int r; |
1892 | ||
c73f413d FS |
1893 | assert(m); |
1894 | assert(u); | |
1895 | ||
68db7a3b ZJS |
1896 | if (!m->timer_event_source) |
1897 | return 0; | |
1898 | ||
7a7821c8 | 1899 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1900 | if (r < 0) |
1901 | return r; | |
7a7821c8 LP |
1902 | if (t == USEC_INFINITY) |
1903 | return 0; | |
68db7a3b | 1904 | |
7a7821c8 | 1905 | *timeout = t; |
68db7a3b ZJS |
1906 | return 1; |
1907 | } | |
1908 | ||
04eb582a | 1909 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1910 | Unit *u; |
1911 | int r; | |
1912 | ||
1913 | assert(m); | |
1914 | ||
1915 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1916 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1917 | ||
1918 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1919 | if (!u) { | |
a581e45a | 1920 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1921 | if (r < 0) { |
1922 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1923 | return; | |
1924 | } | |
11222d0f LP |
1925 | } |
1926 | ||
1927 | u->perpetual = true; | |
1928 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1929 | ||
1930 | unit_add_to_load_queue(u); | |
1931 | unit_add_to_dbus_queue(u); | |
1932 | } | |
1933 | ||
1934 | static bool mount_is_mounted(Mount *m) { | |
1935 | assert(m); | |
1936 | ||
ec88d1ea | 1937 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1938 | } |
1939 | ||
edc027b4 | 1940 | static int mount_on_ratelimit_expire(sd_event_source *s, void *userdata) { |
99534007 | 1941 | Manager *m = ASSERT_PTR(userdata); |
c29e6a95 | 1942 | Job *j; |
edc027b4 | 1943 | |
c29e6a95 MS |
1944 | /* Let's enqueue all start jobs that were previously skipped because of active ratelimit. */ |
1945 | HASHMAP_FOREACH(j, m->jobs) { | |
1946 | if (j->unit->type != UNIT_MOUNT) | |
1947 | continue; | |
1948 | ||
1949 | job_add_to_run_queue(j); | |
1950 | } | |
1951 | ||
b0c4b282 LP |
1952 | /* By entering ratelimited state we made all mount start jobs not runnable, now rate limit is over so |
1953 | * let's make sure we dispatch them in the next iteration. */ | |
1954 | manager_trigger_run_queue(m); | |
edc027b4 MS |
1955 | |
1956 | return 0; | |
1957 | } | |
1958 | ||
ba64af90 | 1959 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1960 | int r; |
d379d442 | 1961 | |
b08d03ff LP |
1962 | assert(m); |
1963 | ||
8d3ae2bd CL |
1964 | mnt_init_debug(0); |
1965 | ||
d379d442 | 1966 | if (!m->mount_monitor) { |
24a4542c | 1967 | unsigned mount_rate_limit_burst = 5; |
d379d442 | 1968 | int fd; |
ef734fd6 | 1969 | |
d379d442 KZ |
1970 | m->mount_monitor = mnt_new_monitor(); |
1971 | if (!m->mount_monitor) { | |
ba64af90 | 1972 | log_oom(); |
718db961 | 1973 | goto fail; |
d379d442 | 1974 | } |
29083707 | 1975 | |
d379d442 | 1976 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1977 | if (r < 0) { |
1978 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1979 | goto fail; |
ba64af90 LP |
1980 | } |
1981 | ||
d379d442 | 1982 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1983 | if (r < 0) { |
1984 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1985 | goto fail; |
ba64af90 | 1986 | } |
90598531 | 1987 | |
d379d442 KZ |
1988 | /* mnt_unref_monitor() will close the fd */ |
1989 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1990 | if (r < 0) { |
1991 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1992 | goto fail; |
ba64af90 | 1993 | } |
befb6d54 | 1994 | |
d379d442 | 1995 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1996 | if (r < 0) { |
1997 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1998 | goto fail; |
ba64af90 | 1999 | } |
befb6d54 | 2000 | |
83231637 | 2001 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
2002 | if (r < 0) { |
2003 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 2004 | goto fail; |
ba64af90 | 2005 | } |
7dfbe2e3 | 2006 | |
24a4542c LB |
2007 | /* Let users override the default (5 in 1s), as it stalls the boot sequence on busy systems. */ |
2008 | const char *e = secure_getenv("SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST"); | |
2009 | if (e) { | |
2010 | r = safe_atou(e, &mount_rate_limit_burst); | |
2011 | if (r < 0) | |
2012 | log_debug("Invalid value in $SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST, ignoring: %s", e); | |
2013 | } | |
2014 | ||
2015 | r = sd_event_source_set_ratelimit(m->mount_event_source, 1 * USEC_PER_SEC, mount_rate_limit_burst); | |
d586f642 MS |
2016 | if (r < 0) { |
2017 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
2018 | goto fail; | |
2019 | } | |
2020 | ||
edc027b4 MS |
2021 | r = sd_event_source_set_ratelimit_expire_callback(m->mount_event_source, mount_on_ratelimit_expire); |
2022 | if (r < 0) { | |
2023 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
2024 | goto fail; | |
2025 | } | |
2026 | ||
d379d442 | 2027 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
2028 | } |
2029 | ||
e62d8c39 ZJS |
2030 | r = mount_load_proc_self_mountinfo(m, false); |
2031 | if (r < 0) | |
b08d03ff LP |
2032 | goto fail; |
2033 | ||
ba64af90 | 2034 | return; |
b08d03ff LP |
2035 | |
2036 | fail: | |
2037 | mount_shutdown(m); | |
5cb5a6ff LP |
2038 | } |
2039 | ||
fcd8e119 LP |
2040 | static int drain_libmount(Manager *m) { |
2041 | bool rescan = false; | |
2042 | int r; | |
2043 | ||
2044 | assert(m); | |
2045 | ||
2046 | /* Drain all events and verify that the event is valid. | |
2047 | * | |
2048 | * Note that libmount also monitors /run/mount mkdir if the directory does not exist yet. The mkdir | |
2049 | * may generate event which is irrelevant for us. | |
2050 | * | |
2051 | * error: r < 0; valid: r == 0, false positive: r == 1 */ | |
2052 | do { | |
2053 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
2054 | if (r < 0) | |
2055 | return log_error_errno(r, "Failed to drain libmount events: %m"); | |
2056 | if (r == 0) | |
2057 | rescan = true; | |
2058 | } while (r == 0); | |
2059 | ||
2060 | return rescan; | |
2061 | } | |
2062 | ||
35080486 | 2063 | static int mount_process_proc_self_mountinfo(Manager *m) { |
6688b72d | 2064 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
ec8126d7 | 2065 | const char *what; |
ef734fd6 LP |
2066 | int r; |
2067 | ||
2068 | assert(m); | |
ef734fd6 | 2069 | |
fcd8e119 LP |
2070 | r = drain_libmount(m); |
2071 | if (r <= 0) | |
2072 | return r; | |
ef734fd6 | 2073 | |
4f0eedb7 ZJS |
2074 | r = mount_load_proc_self_mountinfo(m, true); |
2075 | if (r < 0) { | |
e537352b | 2076 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
2077 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
2078 | MOUNT(u)->proc_flags = 0; | |
e537352b | 2079 | |
ec8126d7 | 2080 | return 0; |
ef734fd6 LP |
2081 | } |
2082 | ||
2083 | manager_dispatch_load_queue(m); | |
2084 | ||
595ed347 MS |
2085 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
2086 | Mount *mount = MOUNT(u); | |
ef734fd6 | 2087 | |
1e122561 YW |
2088 | mount->invalidated_state = false; |
2089 | ||
11222d0f | 2090 | if (!mount_is_mounted(mount)) { |
e537352b | 2091 | |
1483892a | 2092 | /* A mount point is not around right now. It might be gone, or might never have |
394763f6 LP |
2093 | * existed. */ |
2094 | ||
2095 | if (mount->from_proc_self_mountinfo && | |
6688b72d | 2096 | mount->parameters_proc_self_mountinfo.what) |
394763f6 | 2097 | /* Remember that this device might just have disappeared */ |
6688b72d | 2098 | if (set_put_strdup_full(&gone, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2099 | log_oom(); /* we don't care too much about OOM here... */ |
fcd8b266 | 2100 | |
ef734fd6 | 2101 | mount->from_proc_self_mountinfo = false; |
9ddaa3e4 | 2102 | assert_se(update_parameters_proc_self_mountinfo(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
2103 | |
2104 | switch (mount->state) { | |
2105 | ||
2106 | case MOUNT_MOUNTED: | |
7eba1463 | 2107 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 2108 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
2109 | break; |
2110 | ||
2fa0bd7d YW |
2111 | case MOUNT_MOUNTING_DONE: |
2112 | /* The mount command may add the corresponding proc mountinfo entry and | |
2113 | * then remove it because of an internal error. E.g., fuse.sshfs seems | |
2114 | * to do that when the connection fails. See #17617. To handle such the | |
2115 | * case, let's once set the state back to mounting. Then, the unit can | |
2116 | * correctly enter the failed state later in mount_sigchld(). */ | |
2117 | mount_set_state(mount, MOUNT_MOUNTING); | |
2118 | break; | |
2119 | ||
e537352b | 2120 | default: |
e537352b | 2121 | break; |
e537352b LP |
2122 | } |
2123 | ||
ec88d1ea | 2124 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 2125 | |
fcd8b266 | 2126 | /* A mount point was added or changed */ |
e537352b LP |
2127 | |
2128 | switch (mount->state) { | |
2129 | ||
2130 | case MOUNT_DEAD: | |
fdf20a31 | 2131 | case MOUNT_FAILED: |
4b58153d LP |
2132 | |
2133 | /* This has just been mounted by somebody else, follow the state change, but let's | |
2134 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
2135 | (void) unit_acquire_invocation_id(u); |
2136 | mount_cycle_clear(mount); | |
9d2f5178 | 2137 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
2138 | break; |
2139 | ||
2140 | case MOUNT_MOUNTING: | |
5bcb0f2b | 2141 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
2142 | break; |
2143 | ||
2144 | default: | |
1483892a LP |
2145 | /* Nothing really changed, but let's issue an notification call nonetheless, |
2146 | * in case somebody is waiting for this. (e.g. file system ro/rw | |
2147 | * remounts.) */ | |
e537352b LP |
2148 | mount_set_state(mount, mount->state); |
2149 | break; | |
2150 | } | |
394763f6 | 2151 | } |
fcd8b266 | 2152 | |
11222d0f | 2153 | if (mount_is_mounted(mount) && |
394763f6 | 2154 | mount->from_proc_self_mountinfo && |
6688b72d | 2155 | mount->parameters_proc_self_mountinfo.what) |
b6418dc9 | 2156 | /* Track devices currently used */ |
6688b72d | 2157 | if (set_put_strdup_full(&around, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2158 | log_oom(); |
e537352b LP |
2159 | |
2160 | /* Reset the flags for later calls */ | |
ec88d1ea | 2161 | mount->proc_flags = 0; |
e537352b | 2162 | } |
718db961 | 2163 | |
90e74a66 | 2164 | SET_FOREACH(what, gone) { |
fcd8b266 LP |
2165 | if (set_contains(around, what)) |
2166 | continue; | |
2167 | ||
2168 | /* Let the device units know that the device is no longer mounted */ | |
b1ba0ce8 | 2169 | device_found_node(m, what, DEVICE_NOT_FOUND, DEVICE_FOUND_MOUNT); |
fcd8b266 | 2170 | } |
ec8126d7 ZJS |
2171 | |
2172 | return 0; | |
e537352b LP |
2173 | } |
2174 | ||
35080486 | 2175 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 2176 | Manager *m = ASSERT_PTR(userdata); |
35080486 | 2177 | |
35080486 LP |
2178 | assert(revents & EPOLLIN); |
2179 | ||
2180 | return mount_process_proc_self_mountinfo(m); | |
2181 | } | |
2182 | ||
1e122561 YW |
2183 | int mount_invalidate_state_by_path(Manager *manager, const char *path) { |
2184 | _cleanup_free_ char *name = NULL; | |
2185 | Unit *u; | |
2186 | int r; | |
2187 | ||
2188 | assert(manager); | |
2189 | assert(path); | |
2190 | ||
2191 | r = unit_name_from_path(path, ".mount", &name); | |
2192 | if (r < 0) | |
2193 | return log_debug_errno(r, "Failed to generate unit name from path \"%s\", ignoring: %m", path); | |
2194 | ||
2195 | u = manager_get_unit(manager, name); | |
2196 | if (!u) | |
2197 | return -ENOENT; | |
2198 | ||
2199 | MOUNT(u)->invalidated_state = true; | |
2200 | return 0; | |
2201 | } | |
2202 | ||
fdf20a31 | 2203 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
2204 | Mount *m = MOUNT(u); |
2205 | ||
2206 | assert(m); | |
2207 | ||
fdf20a31 | 2208 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
2209 | mount_set_state(m, MOUNT_DEAD); |
2210 | ||
9d2f5178 LP |
2211 | m->result = MOUNT_SUCCESS; |
2212 | m->reload_result = MOUNT_SUCCESS; | |
17e9d53d | 2213 | m->clean_result = MOUNT_SUCCESS; |
5632e374 LP |
2214 | } |
2215 | ||
37eb258e LP |
2216 | static PidRef* mount_control_pid(Unit *u) { |
2217 | return &ASSERT_PTR(MOUNT(u))->control_pid; | |
291d565a LP |
2218 | } |
2219 | ||
17e9d53d YW |
2220 | static int mount_clean(Unit *u, ExecCleanMask mask) { |
2221 | _cleanup_strv_free_ char **l = NULL; | |
2222 | Mount *m = MOUNT(u); | |
2223 | int r; | |
2224 | ||
2225 | assert(m); | |
2226 | assert(mask != 0); | |
2227 | ||
2228 | if (m->state != MOUNT_DEAD) | |
2229 | return -EBUSY; | |
2230 | ||
2231 | r = exec_context_get_clean_directories(&m->exec_context, u->manager->prefix, mask, &l); | |
2232 | if (r < 0) | |
2233 | return r; | |
2234 | ||
2235 | if (strv_isempty(l)) | |
2236 | return -EUNATCH; | |
2237 | ||
2238 | mount_unwatch_control_pid(m); | |
2239 | m->clean_result = MOUNT_SUCCESS; | |
2240 | m->control_command = NULL; | |
2241 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
2242 | ||
2243 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->exec_context.timeout_clean_usec)); | |
2244 | if (r < 0) | |
2245 | goto fail; | |
2246 | ||
4775b55d | 2247 | r = unit_fork_and_watch_rm_rf(u, l, &m->control_pid); |
360f384f LP |
2248 | if (r < 0) |
2249 | goto fail; | |
17e9d53d | 2250 | |
360f384f | 2251 | mount_set_state(m, MOUNT_CLEANING); |
17e9d53d YW |
2252 | return 0; |
2253 | ||
2254 | fail: | |
2255 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); | |
2256 | m->clean_result = MOUNT_FAILURE_RESOURCES; | |
5dcadb4c | 2257 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
17e9d53d YW |
2258 | return r; |
2259 | } | |
2260 | ||
2261 | static int mount_can_clean(Unit *u, ExecCleanMask *ret) { | |
2262 | Mount *m = MOUNT(u); | |
2263 | ||
2264 | assert(m); | |
2265 | ||
2266 | return exec_context_get_clean_mask(&m->exec_context, ret); | |
2267 | } | |
2268 | ||
705578c3 | 2269 | static int mount_can_start(Unit *u) { |
9727f242 DDM |
2270 | Mount *m = MOUNT(u); |
2271 | int r; | |
2272 | ||
2273 | assert(m); | |
2274 | ||
2275 | r = unit_test_start_limit(u); | |
2276 | if (r < 0) { | |
2277 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
2278 | return r; | |
2279 | } | |
2280 | ||
705578c3 | 2281 | return 1; |
9727f242 DDM |
2282 | } |
2283 | ||
47261967 LP |
2284 | static int mount_subsystem_ratelimited(Manager *m) { |
2285 | assert(m); | |
2286 | ||
2287 | if (!m->mount_event_source) | |
2288 | return false; | |
2289 | ||
2290 | return sd_event_source_is_ratelimited(m->mount_event_source); | |
2291 | } | |
2292 | ||
a16e1123 | 2293 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
48d83e33 | 2294 | [MOUNT_EXEC_MOUNT] = "ExecMount", |
a16e1123 LP |
2295 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", |
2296 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
2297 | }; | |
2298 | ||
2299 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
2300 | ||
9d2f5178 | 2301 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
48d83e33 ZJS |
2302 | [MOUNT_SUCCESS] = "success", |
2303 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
2304 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
2305 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
2306 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
2307 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", | |
07299350 | 2308 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 | 2309 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
2310 | }; |
2311 | ||
2312 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
2313 | ||
87f0e418 | 2314 | const UnitVTable mount_vtable = { |
7d17cfbc | 2315 | .object_size = sizeof(Mount), |
718db961 LP |
2316 | .exec_context_offset = offsetof(Mount, exec_context), |
2317 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
2318 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 2319 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
3ef63c31 | 2320 | |
f975e971 LP |
2321 | .sections = |
2322 | "Unit\0" | |
2323 | "Mount\0" | |
2324 | "Install\0", | |
4ad49000 | 2325 | .private_section = "Mount", |
71645aca | 2326 | |
c80a9a33 LP |
2327 | .can_transient = true, |
2328 | .can_fail = true, | |
755021d4 | 2329 | .exclude_from_switch_root_serialization = true, |
c80a9a33 | 2330 | |
e537352b LP |
2331 | .init = mount_init, |
2332 | .load = mount_load, | |
034c6ed7 | 2333 | .done = mount_done, |
e537352b | 2334 | |
f50e0a01 | 2335 | .coldplug = mount_coldplug, |
01400460 | 2336 | .catchup = mount_catchup, |
f50e0a01 | 2337 | |
034c6ed7 | 2338 | .dump = mount_dump, |
5cb5a6ff | 2339 | |
e537352b LP |
2340 | .start = mount_start, |
2341 | .stop = mount_stop, | |
2342 | .reload = mount_reload, | |
2343 | ||
17e9d53d YW |
2344 | .clean = mount_clean, |
2345 | .can_clean = mount_can_clean, | |
8a0867d6 | 2346 | |
a16e1123 LP |
2347 | .serialize = mount_serialize, |
2348 | .deserialize_item = mount_deserialize_item, | |
2349 | ||
f50e0a01 | 2350 | .active_state = mount_active_state, |
10a94420 | 2351 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2352 | |
52a12341 YW |
2353 | .will_restart = unit_will_restart_default, |
2354 | ||
f2f725e5 | 2355 | .may_gc = mount_may_gc, |
39c79477 | 2356 | .is_extrinsic = mount_is_extrinsic, |
701cc384 | 2357 | |
e537352b | 2358 | .sigchld_event = mount_sigchld_event, |
e537352b | 2359 | |
fdf20a31 | 2360 | .reset_failed = mount_reset_failed, |
291d565a LP |
2361 | |
2362 | .control_pid = mount_control_pid, | |
5632e374 | 2363 | |
74c964d3 LP |
2364 | .bus_set_property = bus_mount_set_property, |
2365 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2366 | |
68db7a3b ZJS |
2367 | .get_timeout = mount_get_timeout, |
2368 | ||
04eb582a | 2369 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2370 | .enumerate = mount_enumerate, |
c6918296 | 2371 | .shutdown = mount_shutdown, |
47261967 | 2372 | .subsystem_ratelimited = mount_subsystem_ratelimited, |
c6918296 MS |
2373 | |
2374 | .status_message_formats = { | |
2375 | .starting_stopping = { | |
2376 | [0] = "Mounting %s...", | |
2377 | [1] = "Unmounting %s...", | |
2378 | }, | |
2379 | .finished_start_job = { | |
2380 | [JOB_DONE] = "Mounted %s.", | |
2381 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2382 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2383 | }, | |
2384 | .finished_stop_job = { | |
2385 | [JOB_DONE] = "Unmounted %s.", | |
2386 | [JOB_FAILED] = "Failed unmounting %s.", | |
2387 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2388 | }, | |
2389 | }, | |
9727f242 | 2390 | |
705578c3 | 2391 | .can_start = mount_can_start, |
b2bfd121 LP |
2392 | |
2393 | .notify_plymouth = true, | |
5cb5a6ff | 2394 | }; |