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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 | |
1f19a534 | 175 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
176 | |
177 | m->exec_context.std_output = u->manager->default_std_output; | |
178 | m->exec_context.std_error = u->manager->default_std_error; | |
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 | |
a16e1123 | 188 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 189 | |
5bcb0f2b | 190 | u->ignore_on_isolate = true; |
8d567588 LP |
191 | } |
192 | ||
36c16a7c | 193 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
194 | int r; |
195 | ||
196 | assert(m); | |
197 | ||
57d2b6a9 YW |
198 | if (usec == USEC_INFINITY) |
199 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_OFF); | |
200 | ||
718db961 | 201 | if (m->timer_event_source) { |
36c16a7c | 202 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
203 | if (r < 0) |
204 | return r; | |
205 | ||
206 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
207 | } | |
208 | ||
7dfbe2e3 | 209 | r = sd_event_add_time( |
6a0f1f6d LP |
210 | UNIT(m)->manager->event, |
211 | &m->timer_event_source, | |
212 | CLOCK_MONOTONIC, | |
36c16a7c | 213 | usec, 0, |
6a0f1f6d | 214 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
215 | if (r < 0) |
216 | return r; | |
217 | ||
218 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
219 | ||
220 | return 0; | |
718db961 LP |
221 | } |
222 | ||
a16e1123 | 223 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
224 | assert(m); |
225 | ||
226 | if (m->control_pid <= 0) | |
227 | return; | |
228 | ||
8f03de53 | 229 | unit_unwatch_pid(UNIT(m), TAKE_PID(m->control_pid)); |
5e94833f LP |
230 | } |
231 | ||
e537352b LP |
232 | static void mount_parameters_done(MountParameters *p) { |
233 | assert(p); | |
234 | ||
a26592cf LP |
235 | p->what = mfree(p->what); |
236 | p->options = mfree(p->options); | |
237 | p->fstype = mfree(p->fstype); | |
e537352b LP |
238 | } |
239 | ||
87f0e418 | 240 | static void mount_done(Unit *u) { |
ef734fd6 | 241 | Mount *m = MOUNT(u); |
034c6ed7 | 242 | |
ef734fd6 | 243 | assert(m); |
034c6ed7 | 244 | |
a1e58e8e | 245 | m->where = mfree(m->where); |
f50e0a01 | 246 | |
e537352b LP |
247 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
248 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 249 | |
28135da3 | 250 | m->exec_runtime = exec_runtime_free(m->exec_runtime); |
e537352b LP |
251 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
252 | m->control_command = NULL; | |
f50e0a01 | 253 | |
a16e1123 | 254 | mount_unwatch_control_pid(m); |
f50e0a01 | 255 | |
5dcadb4c | 256 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
f50e0a01 LP |
257 | } |
258 | ||
9ddaa3e4 | 259 | static int update_parameters_proc_self_mountinfo( |
b7bbf890 ZJS |
260 | Mount *m, |
261 | const char *what, | |
262 | const char *options, | |
263 | const char *fstype) { | |
264 | ||
265 | MountParameters *p; | |
266 | int r, q, w; | |
267 | ||
268 | p = &m->parameters_proc_self_mountinfo; | |
269 | ||
bcf58ff5 YW |
270 | r = free_and_strdup(&p->what, what); |
271 | if (r < 0) | |
272 | return r; | |
aaf7b0e4 | 273 | |
bcf58ff5 YW |
274 | q = free_and_strdup(&p->options, options); |
275 | if (q < 0) | |
276 | return q; | |
b7bbf890 ZJS |
277 | |
278 | w = free_and_strdup(&p->fstype, fstype); | |
279 | if (w < 0) | |
280 | return w; | |
281 | ||
282 | return r > 0 || q > 0 || w > 0; | |
283 | } | |
284 | ||
eef85c4a | 285 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 286 | MountParameters *pm; |
ac155bb8 | 287 | Unit *other; |
a57f7e2c | 288 | Set *s; |
b08d03ff LP |
289 | int r; |
290 | ||
6e2ef85b | 291 | assert(m); |
b08d03ff | 292 | |
a57f7e2c | 293 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
294 | _cleanup_free_ char *parent = NULL; |
295 | ||
296 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c | 297 | |
45519d13 LP |
298 | r = path_extract_directory(m->where, &parent); |
299 | if (r < 0) | |
300 | return r; | |
01f78473 | 301 | |
eef85c4a | 302 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 303 | if (r < 0) |
01f78473 | 304 | return r; |
4f0eedb7 | 305 | } |
01f78473 | 306 | |
eef85c4a LP |
307 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
308 | * or a loop mount) to be available. */ | |
a57f7e2c | 309 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
310 | if (pm && pm->what && |
311 | path_is_absolute(pm->what) && | |
d3bd0986 | 312 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 313 | |
eef85c4a | 314 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 315 | if (r < 0) |
6e2ef85b | 316 | return r; |
4f0eedb7 | 317 | } |
b08d03ff | 318 | |
eef85c4a | 319 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c | 320 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
90e74a66 | 321 | SET_FOREACH(other, s) { |
b08d03ff | 322 | |
a57f7e2c LP |
323 | if (other->load_state != UNIT_LOADED) |
324 | continue; | |
b08d03ff | 325 | |
a57f7e2c LP |
326 | if (other == UNIT(m)) |
327 | continue; | |
b08d03ff | 328 | |
eef85c4a | 329 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 330 | if (r < 0) |
6e2ef85b | 331 | return r; |
b08d03ff | 332 | |
a57f7e2c LP |
333 | if (UNIT(m)->fragment_path) { |
334 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 335 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
336 | if (r < 0) |
337 | return r; | |
338 | } | |
7c8fa05c LP |
339 | } |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
eef85c4a | 344 | static int mount_add_device_dependencies(Mount *m) { |
87c734ee | 345 | UnitDependencyMask mask; |
eef85c4a | 346 | MountParameters *p; |
ebc8968b | 347 | UnitDependency dep; |
9fff8a1f | 348 | int r; |
173a8d04 LP |
349 | |
350 | assert(m); | |
351 | ||
556b6f4e DDM |
352 | log_unit_trace(UNIT(m), "Processing implicit device dependencies"); |
353 | ||
06e97888 | 354 | p = get_mount_parameters(m); |
556b6f4e DDM |
355 | if (!p) { |
356 | log_unit_trace(UNIT(m), "Missing mount parameters, skipping implicit device dependencies"); | |
173a8d04 | 357 | return 0; |
556b6f4e | 358 | } |
173a8d04 | 359 | |
556b6f4e DDM |
360 | if (!p->what) { |
361 | log_unit_trace(UNIT(m), "Missing mount source, skipping implicit device dependencies"); | |
173a8d04 | 362 | return 0; |
556b6f4e | 363 | } |
5c78d8e2 | 364 | |
556b6f4e DDM |
365 | if (mount_is_bind(p)) { |
366 | log_unit_trace(UNIT(m), "Mount unit is a bind mount, skipping implicit device dependencies"); | |
dd144c63 | 367 | return 0; |
556b6f4e | 368 | } |
dd144c63 | 369 | |
556b6f4e DDM |
370 | if (!is_device_path(p->what)) { |
371 | log_unit_trace(UNIT(m), "Mount source is not a device path, skipping implicit device dependencies"); | |
dd144c63 | 372 | return 0; |
556b6f4e | 373 | } |
dd144c63 | 374 | |
5de0acf4 LP |
375 | /* /dev/root is a really weird thing, it's not a real device, but just a path the kernel exports for |
376 | * the root file system specified on the kernel command line. Ignore it here. */ | |
556b6f4e DDM |
377 | if (PATH_IN_SET(p->what, "/dev/root", "/dev/nfs")) { |
378 | log_unit_trace(UNIT(m), "Mount source is in /dev/root or /dev/nfs, skipping implicit device dependencies"); | |
7ba2711d | 379 | return 0; |
556b6f4e | 380 | } |
7ba2711d | 381 | |
556b6f4e DDM |
382 | if (path_equal(m->where, "/")) { |
383 | log_unit_trace(UNIT(m), "Mount destination is '/', skipping implicit device dependencies"); | |
dd144c63 | 384 | return 0; |
556b6f4e | 385 | } |
dd144c63 | 386 | |
44b0d1fd | 387 | /* Mount units from /proc/self/mountinfo are not bound to devices by default since they're subject to |
47cd17ea LP |
388 | * races when mounts are established by other tools with different backing devices than what we |
389 | * maintain. The user can still force this to be a BindsTo= dependency with an appropriate option (or | |
390 | * udev property) so the mount units are automatically stopped when the device disappears | |
44b0d1fd | 391 | * suddenly. */ |
ebc8968b FB |
392 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; |
393 | ||
87c734ee FB |
394 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
395 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; | |
396 | ||
397 | r = unit_add_node_dependency(UNIT(m), p->what, dep, mask); | |
dd144c63 LP |
398 | if (r < 0) |
399 | return r; | |
556b6f4e DDM |
400 | if (r > 0) |
401 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(dep), p->what); | |
402 | ||
47cd17ea | 403 | if (mount_propagate_stop(m)) { |
87c734ee | 404 | r = unit_add_node_dependency(UNIT(m), p->what, UNIT_STOP_PROPAGATED_FROM, mask); |
47cd17ea LP |
405 | if (r < 0) |
406 | return r; | |
556b6f4e DDM |
407 | if (r > 0) |
408 | log_unit_trace(UNIT(m), "Added %s dependency on %s", | |
409 | unit_dependency_to_string(UNIT_STOP_PROPAGATED_FROM), p->what); | |
47cd17ea | 410 | } |
9fff8a1f | 411 | |
87c734ee | 412 | r = unit_add_blockdev_dependency(UNIT(m), p->what, mask); |
556b6f4e DDM |
413 | if (r > 0) |
414 | log_unit_trace(UNIT(m), "Added %s dependency on %s", unit_dependency_to_string(UNIT_AFTER), p->what); | |
415 | ||
49267b1b | 416 | return 0; |
173a8d04 LP |
417 | } |
418 | ||
eef85c4a | 419 | static int mount_add_quota_dependencies(Mount *m) { |
6b1dc2bd | 420 | MountParameters *p; |
eef85c4a | 421 | int r; |
6b1dc2bd LP |
422 | |
423 | assert(m); | |
424 | ||
463d0d15 | 425 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
426 | return 0; |
427 | ||
428 | p = get_mount_parameters_fragment(m); | |
429 | if (!p) | |
430 | return 0; | |
431 | ||
06e457b1 | 432 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
433 | return 0; |
434 | ||
c5d82021 FB |
435 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, |
436 | /* add_reference= */ true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
437 | if (r < 0) |
438 | return r; | |
439 | ||
c5d82021 FB |
440 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, |
441 | /* add_reference= */true, UNIT_DEPENDENCY_FILE); | |
6b1dc2bd LP |
442 | if (r < 0) |
443 | return r; | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
39c79477 | 448 | static bool mount_is_extrinsic(Unit *u) { |
88ac30a1 | 449 | MountParameters *p; |
39c79477 | 450 | Mount *m = MOUNT(u); |
ad2706db | 451 | assert(m); |
88ac30a1 | 452 | |
bc9e5a4c FB |
453 | /* Returns true for all units that are "magic" and should be excluded from the usual |
454 | * start-up and shutdown dependencies. We call them "extrinsic" here, as they are generally | |
455 | * mounted outside of the systemd dependency logic. We shouldn't attempt to manage them | |
456 | * ourselves but it's fine if the user operates on them with us. */ | |
ad2706db | 457 | |
bc9e5a4c | 458 | /* We only automatically manage mounts if we are in system mode */ |
39c79477 | 459 | if (MANAGER_IS_USER(u->manager)) |
b8e5776d LP |
460 | return true; |
461 | ||
88ac30a1 | 462 | p = get_mount_parameters(m); |
bc9e5a4c | 463 | if (p && fstab_is_extrinsic(m->where, p->options)) |
ad2706db | 464 | return true; |
88ac30a1 | 465 | |
ad2706db | 466 | return false; |
88ac30a1 TG |
467 | } |
468 | ||
92e64e9a LP |
469 | static bool mount_is_credentials(Mount *m) { |
470 | const char *e; | |
471 | ||
472 | assert(m); | |
473 | ||
474 | /* Returns true if this is a credentials mount. We don't want automatic dependencies on credential | |
475 | * mounts, since they are managed by us for even the earliest services, and we never want anything to | |
476 | * be ordered before them hence. */ | |
477 | ||
478 | e = path_startswith(m->where, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); | |
479 | if (!e) | |
480 | return false; | |
481 | ||
482 | return !isempty(path_startswith(e, "credentials")); | |
483 | } | |
484 | ||
87c734ee | 485 | static int mount_add_default_ordering_dependencies(Mount *m, MountParameters *p, UnitDependencyMask mask) { |
83cdc870 | 486 | const char *after, *before, *e; |
d54bab90 | 487 | int r; |
2edd4434 LP |
488 | |
489 | assert(m); | |
490 | ||
83cdc870 FB |
491 | e = path_startswith(m->where, "/sysroot"); |
492 | if (e && in_initrd()) { | |
493 | /* All mounts under /sysroot need to happen later, at initrd-fs.target time. IOW, | |
494 | * it's not technically part of the basic initrd filesystem itself, and so | |
6e017b19 WF |
495 | * shouldn't inherit the default Before=local-fs.target dependency. However, |
496 | * these mounts still need to start after local-fs-pre.target, as a sync point | |
760e99bb | 497 | * for things like systemd-hibernate-resume.service that should start before |
6e017b19 | 498 | * any mounts. */ |
83cdc870 | 499 | |
6e017b19 | 500 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
83cdc870 FB |
501 | before = isempty(e) ? SPECIAL_INITRD_ROOT_FS_TARGET : SPECIAL_INITRD_FS_TARGET; |
502 | ||
dbfc0960 | 503 | } else if (in_initrd() && path_startswith(m->where, "/sysusr/usr")) { |
6e017b19 | 504 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
dbfc0960 YW |
505 | before = SPECIAL_INITRD_USR_FS_TARGET; |
506 | ||
92e64e9a LP |
507 | } else if (mount_is_credentials(m)) |
508 | after = before = NULL; | |
509 | ||
510 | else if (mount_is_network(p)) { | |
ea0ec5ce | 511 | after = SPECIAL_REMOTE_FS_PRE_TARGET; |
d54bab90 | 512 | before = SPECIAL_REMOTE_FS_TARGET; |
2ec15c4f | 513 | |
d54bab90 | 514 | } else { |
ea0ec5ce | 515 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
516 | before = SPECIAL_LOCAL_FS_TARGET; |
517 | } | |
518 | ||
92e64e9a | 519 | if (before && !mount_is_nofail(m)) { |
87c734ee | 520 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, /* add_reference= */ true, mask); |
8c8203db YW |
521 | if (r < 0) |
522 | return r; | |
523 | } | |
ea0ec5ce | 524 | |
92e64e9a LP |
525 | if (after) { |
526 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, /* add_reference= */ true, mask); | |
527 | if (r < 0) | |
528 | return r; | |
529 | } | |
530 | ||
531 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, | |
532 | /* add_reference= */ true, mask); | |
6e017b19 WF |
533 | if (r < 0) |
534 | return r; | |
e8d2f6cd | 535 | |
92e64e9a LP |
536 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
537 | if (streq_ptr(p->fstype, "tmpfs") && !mount_is_credentials(m)) { | |
538 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, | |
539 | /* add_reference= */ true, mask); | |
540 | if (r < 0) | |
541 | return r; | |
542 | } | |
543 | ||
544 | return 0; | |
61154cf9 FB |
545 | } |
546 | ||
75b09529 LP |
547 | static int mount_add_default_network_dependencies(Mount *m, MountParameters *p, UnitDependencyMask mask) { |
548 | int r; | |
549 | ||
550 | assert(m); | |
551 | ||
552 | if (!mount_is_network(p)) | |
553 | return 0; | |
554 | ||
555 | /* We order ourselves after network.target. This is primarily useful at shutdown: services that take | |
556 | * down the network should order themselves before network.target, so that they are shut down only | |
557 | * after this mount unit is stopped. */ | |
558 | ||
559 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, | |
560 | /* add_reference= */ true, mask); | |
6e017b19 WF |
561 | if (r < 0) |
562 | return r; | |
e8d2f6cd | 563 | |
75b09529 LP |
564 | /* We pull in network-online.target, and order ourselves after it. This is useful at start-up to |
565 | * actively pull in tools that want to be started before we start mounting network file systems, and | |
566 | * whose purpose it is to delay this until the network is "up". */ | |
567 | ||
568 | return unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, | |
87c734ee | 569 | /* add_reference= */ true, mask); |
61154cf9 FB |
570 | } |
571 | ||
2edd4434 | 572 | static int mount_add_default_dependencies(Mount *m) { |
87c734ee | 573 | UnitDependencyMask mask; |
9ddc4a26 | 574 | MountParameters *p; |
d54bab90 | 575 | int r; |
2edd4434 LP |
576 | |
577 | assert(m); | |
578 | ||
4c9ea260 LP |
579 | if (!UNIT(m)->default_dependencies) |
580 | return 0; | |
581 | ||
61154cf9 FB |
582 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are |
583 | * guaranteed to stay mounted the whole time, since our system is on it. Also, don't | |
584 | * bother with anything mounted below virtual file systems, it's also going to be virtual, | |
585 | * and hence not worth the effort. */ | |
39c79477 | 586 | if (mount_is_extrinsic(UNIT(m))) |
6b1dc2bd | 587 | return 0; |
2edd4434 | 588 | |
874d3404 LP |
589 | p = get_mount_parameters(m); |
590 | if (!p) | |
6b1dc2bd LP |
591 | return 0; |
592 | ||
87c734ee FB |
593 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO : UNIT_DEPENDENCY_MOUNT_FILE; |
594 | ||
595 | r = mount_add_default_ordering_dependencies(m, p, mask); | |
ad2706db LP |
596 | if (r < 0) |
597 | return r; | |
eef85c4a | 598 | |
75b09529 LP |
599 | r = mount_add_default_network_dependencies(m, p, mask); |
600 | if (r < 0) | |
601 | return r; | |
3e3852b3 | 602 | |
84214541 | 603 | return 0; |
2edd4434 LP |
604 | } |
605 | ||
8d567588 | 606 | static int mount_verify(Mount *m) { |
a57f7e2c | 607 | _cleanup_free_ char *e = NULL; |
b294b79f | 608 | MountParameters *p; |
7410616c | 609 | int r; |
a57f7e2c | 610 | |
8d567588 | 611 | assert(m); |
75193d41 | 612 | assert(UNIT(m)->load_state == UNIT_LOADED); |
8d567588 | 613 | |
1df96fcb | 614 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
615 | return -ENOENT; |
616 | ||
7410616c LP |
617 | r = unit_name_from_path(m->where, ".mount", &e); |
618 | if (r < 0) | |
f2341e0a | 619 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 620 | |
d85ff944 YW |
621 | if (!unit_has_name(UNIT(m), e)) |
622 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Where= setting doesn't match unit name. Refusing."); | |
8d567588 | 623 | |
d85ff944 YW |
624 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) |
625 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Cannot create mount unit for API file system %s. Refusing.", m->where); | |
33ff02c9 | 626 | |
b294b79f | 627 | p = get_mount_parameters_fragment(m); |
0879fbd6 LP |
628 | if (p && !p->what && !UNIT(m)->perpetual) |
629 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), | |
630 | "What= setting is missing. Refusing."); | |
4e85aff4 | 631 | |
d85ff944 YW |
632 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) |
633 | return log_unit_error_errno(UNIT(m), SYNTHETIC_ERRNO(ENOEXEC), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); | |
4d0e5dbd | 634 | |
8d567588 LP |
635 | return 0; |
636 | } | |
637 | ||
bf7eedbf LP |
638 | static int mount_add_non_exec_dependencies(Mount *m) { |
639 | int r; | |
49267b1b | 640 | |
bf7eedbf LP |
641 | assert(m); |
642 | ||
9c77ffc7 FB |
643 | /* We may be called due to this mount appearing in /proc/self/mountinfo, hence we clear all existing |
644 | * dependencies that were initialized from the unit file but whose final value really depends on the | |
645 | * content of /proc/self/mountinfo. Some (such as m->where) might have become stale now. */ | |
87c734ee | 646 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO | UNIT_DEPENDENCY_MOUNT_FILE); |
49267b1b YW |
647 | |
648 | if (!m->where) | |
649 | return 0; | |
650 | ||
bf7eedbf LP |
651 | /* Adds in all dependencies directly responsible for ordering the mount, as opposed to dependencies |
652 | * resulting from the ExecContext and such. */ | |
653 | ||
654 | r = mount_add_device_dependencies(m); | |
655 | if (r < 0) | |
656 | return r; | |
657 | ||
658 | r = mount_add_mount_dependencies(m); | |
659 | if (r < 0) | |
660 | return r; | |
661 | ||
662 | r = mount_add_quota_dependencies(m); | |
663 | if (r < 0) | |
664 | return r; | |
665 | ||
666 | r = mount_add_default_dependencies(m); | |
667 | if (r < 0) | |
668 | return r; | |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
1a4ac875 MS |
673 | static int mount_add_extras(Mount *m) { |
674 | Unit *u = UNIT(m); | |
e537352b LP |
675 | int r; |
676 | ||
e821075a LP |
677 | assert(m); |
678 | ||
1f736476 LP |
679 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
680 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
681 | * to run with an already set up unit. */ | |
682 | ||
e821075a | 683 | if (u->fragment_path) |
1a4ac875 | 684 | m->from_fragment = true; |
e537352b | 685 | |
1a4ac875 | 686 | if (!m->where) { |
7410616c | 687 | r = unit_name_to_path(u->id, &m->where); |
1d0727e7 MS |
688 | if (r == -ENAMETOOLONG) |
689 | log_unit_error_errno(u, r, "Failed to derive mount point path from unit name, because unit name is hashed. " | |
690 | "Set \"Where=\" in the unit file explicitly."); | |
7410616c LP |
691 | if (r < 0) |
692 | return r; | |
1a4ac875 | 693 | } |
a16e1123 | 694 | |
4ff361cc | 695 | path_simplify(m->where); |
e537352b | 696 | |
e821075a | 697 | if (!u->description) { |
1a4ac875 MS |
698 | r = unit_set_description(u, m->where); |
699 | if (r < 0) | |
173a8d04 | 700 | return r; |
1a4ac875 | 701 | } |
6e2ef85b | 702 | |
598459ce LP |
703 | r = unit_patch_contexts(u); |
704 | if (r < 0) | |
705 | return r; | |
4e67ddd6 | 706 | |
598459ce | 707 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
708 | if (r < 0) |
709 | return r; | |
710 | ||
d79200e2 | 711 | r = unit_set_default_slice(u); |
1a4ac875 MS |
712 | if (r < 0) |
713 | return r; | |
714 | ||
bf7eedbf | 715 | r = mount_add_non_exec_dependencies(m); |
4c9ea260 LP |
716 | if (r < 0) |
717 | return r; | |
598459ce | 718 | |
1a4ac875 MS |
719 | return 0; |
720 | } | |
721 | ||
75193d41 | 722 | static void mount_load_root_mount(Unit *u) { |
11222d0f LP |
723 | assert(u); |
724 | ||
725 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
75193d41 | 726 | return; |
11222d0f LP |
727 | |
728 | u->perpetual = true; | |
729 | u->default_dependencies = false; | |
730 | ||
731 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
732 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
733 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
734 | ||
735 | if (!u->description) | |
736 | u->description = strdup("Root Mount"); | |
11222d0f LP |
737 | } |
738 | ||
1a4ac875 MS |
739 | static int mount_load(Unit *u) { |
740 | Mount *m = MOUNT(u); | |
75193d41 | 741 | int r, q = 0; |
1a4ac875 | 742 | |
c73f413d | 743 | assert(m); |
1a4ac875 MS |
744 | assert(u); |
745 | assert(u->load_state == UNIT_STUB); | |
746 | ||
75193d41 | 747 | mount_load_root_mount(u); |
11222d0f | 748 | |
c3620770 | 749 | bool fragment_optional = m->from_proc_self_mountinfo || u->perpetual; |
75193d41 | 750 | r = unit_load_fragment_and_dropin(u, !fragment_optional); |
780ae022 LP |
751 | |
752 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
753 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
754 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
755 | * 'slice' field for a unit once it is active. */ | |
756 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
75193d41 | 757 | q = mount_add_extras(m); |
780ae022 | 758 | |
1a4ac875 MS |
759 | if (r < 0) |
760 | return r; | |
780ae022 LP |
761 | if (q < 0) |
762 | return q; | |
75193d41 ZJS |
763 | if (u->load_state != UNIT_LOADED) |
764 | return 0; | |
e537352b | 765 | |
8d567588 | 766 | return mount_verify(m); |
e537352b LP |
767 | } |
768 | ||
769 | static void mount_set_state(Mount *m, MountState state) { | |
770 | MountState old_state; | |
771 | assert(m); | |
772 | ||
6fcbec6f LP |
773 | if (m->state != state) |
774 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
775 | ||
e537352b LP |
776 | old_state = m->state; |
777 | m->state = state; | |
778 | ||
c634f3d2 | 779 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
5dcadb4c | 780 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
a16e1123 | 781 | mount_unwatch_control_pid(m); |
e537352b | 782 | m->control_command = NULL; |
a16e1123 | 783 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
784 | } |
785 | ||
786 | if (state != old_state) | |
f2341e0a | 787 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 788 | |
96b09de5 | 789 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
790 | } |
791 | ||
be847e82 | 792 | static int mount_coldplug(Unit *u) { |
e537352b | 793 | Mount *m = MOUNT(u); |
a16e1123 | 794 | int r; |
e537352b LP |
795 | |
796 | assert(m); | |
797 | assert(m->state == MOUNT_DEAD); | |
798 | ||
01400460 | 799 | if (m->deserialized_state == m->state) |
5bcb0f2b | 800 | return 0; |
e537352b | 801 | |
c386f588 LP |
802 | if (m->control_pid > 0 && |
803 | pid_is_unwaited(m->control_pid) && | |
01400460 | 804 | MOUNT_STATE_WITH_PROCESS(m->deserialized_state)) { |
5bcb0f2b | 805 | |
f75f613d | 806 | r = unit_watch_pid(UNIT(m), m->control_pid, false); |
5bcb0f2b LP |
807 | if (r < 0) |
808 | return r; | |
e537352b | 809 | |
36c16a7c | 810 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
811 | if (r < 0) |
812 | return r; | |
a16e1123 | 813 | } |
e537352b | 814 | |
15220772 | 815 | if (!IN_SET(m->deserialized_state, MOUNT_DEAD, MOUNT_FAILED)) |
e8a565cb | 816 | (void) unit_setup_exec_runtime(u); |
29206d46 | 817 | |
01400460 | 818 | mount_set_state(m, m->deserialized_state); |
e537352b | 819 | return 0; |
e537352b LP |
820 | } |
821 | ||
01400460 YW |
822 | static void mount_catchup(Unit *u) { |
823 | Mount *m = MOUNT(ASSERT_PTR(u)); | |
824 | ||
825 | assert(m); | |
826 | ||
827 | /* Adjust the deserialized state. See comments in mount_process_proc_self_mountinfo(). */ | |
828 | if (m->from_proc_self_mountinfo) | |
829 | switch (m->state) { | |
830 | case MOUNT_DEAD: | |
831 | case MOUNT_FAILED: | |
832 | assert(m->control_pid == 0); | |
039f4284 | 833 | (void) unit_acquire_invocation_id(u); |
01400460 YW |
834 | mount_cycle_clear(m); |
835 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
836 | break; | |
837 | case MOUNT_MOUNTING: | |
838 | assert(m->control_pid > 0); | |
839 | mount_set_state(m, MOUNT_MOUNTING_DONE); | |
840 | break; | |
841 | default: | |
842 | break; | |
843 | } | |
844 | else | |
845 | switch (m->state) { | |
846 | case MOUNT_MOUNTING_DONE: | |
847 | assert(m->control_pid > 0); | |
848 | mount_set_state(m, MOUNT_MOUNTING); | |
849 | break; | |
850 | case MOUNT_MOUNTED: | |
851 | assert(m->control_pid == 0); | |
852 | mount_enter_dead(m, MOUNT_SUCCESS); | |
853 | break; | |
854 | default: | |
855 | break; | |
856 | } | |
857 | } | |
858 | ||
e537352b LP |
859 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { |
860 | Mount *m = MOUNT(u); | |
861 | MountParameters *p; | |
862 | ||
863 | assert(m); | |
864 | assert(f); | |
865 | ||
cb39ed3f | 866 | p = get_mount_parameters(m); |
e537352b LP |
867 | |
868 | fprintf(f, | |
869 | "%sMount State: %s\n" | |
81a5c6d0 | 870 | "%sResult: %s\n" |
17e9d53d | 871 | "%sClean Result: %s\n" |
e537352b LP |
872 | "%sWhere: %s\n" |
873 | "%sWhat: %s\n" | |
874 | "%sFile System Type: %s\n" | |
875 | "%sOptions: %s\n" | |
e537352b LP |
876 | "%sFrom /proc/self/mountinfo: %s\n" |
877 | "%sFrom fragment: %s\n" | |
ad2706db | 878 | "%sExtrinsic: %s\n" |
e520950a | 879 | "%sDirectoryMode: %04o\n" |
49915de2 | 880 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 881 | "%sLazyUnmount: %s\n" |
91899792 | 882 | "%sForceUnmount: %s\n" |
c600357b | 883 | "%sReadWriteOnly: %s\n" |
ac8956ef | 884 | "%sTimeoutSec: %s\n", |
a16e1123 | 885 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 886 | prefix, mount_result_to_string(m->result), |
17e9d53d | 887 | prefix, mount_result_to_string(m->clean_result), |
e537352b | 888 | prefix, m->where, |
1e4fc9b1 HH |
889 | prefix, p ? strna(p->what) : "n/a", |
890 | prefix, p ? strna(p->fstype) : "n/a", | |
891 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
892 | prefix, yes_no(m->from_proc_self_mountinfo), |
893 | prefix, yes_no(m->from_fragment), | |
39c79477 | 894 | prefix, yes_no(mount_is_extrinsic(u)), |
e520950a | 895 | prefix, m->directory_mode, |
49915de2 | 896 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 897 | prefix, yes_no(m->lazy_unmount), |
91899792 | 898 | prefix, yes_no(m->force_unmount), |
c600357b | 899 | prefix, yes_no(m->read_write_only), |
5291f26d | 900 | prefix, FORMAT_TIMESPAN(m->timeout_usec, USEC_PER_SEC)); |
e537352b LP |
901 | |
902 | if (m->control_pid > 0) | |
903 | fprintf(f, | |
ccd06097 ZJS |
904 | "%sControl PID: "PID_FMT"\n", |
905 | prefix, m->control_pid); | |
e537352b LP |
906 | |
907 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 908 | kill_context_dump(&m->kill_context, f, prefix); |
bc0623df | 909 | cgroup_context_dump(UNIT(m), f, prefix); |
e537352b LP |
910 | } |
911 | ||
ef25552e | 912 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *ret_pid) { |
3c7416b6 | 913 | |
b9c04eaf | 914 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b | 915 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
254d1313 ZJS |
916 | .stdin_fd = -EBADF, |
917 | .stdout_fd = -EBADF, | |
918 | .stderr_fd = -EBADF, | |
919 | .exec_fd = -EBADF, | |
9fa95f85 | 920 | }; |
3c7416b6 LP |
921 | pid_t pid; |
922 | int r; | |
a16e1123 LP |
923 | |
924 | assert(m); | |
925 | assert(c); | |
ef25552e | 926 | assert(ret_pid); |
a16e1123 | 927 | |
3c7416b6 | 928 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
929 | if (r < 0) |
930 | return r; | |
931 | ||
36c16a7c | 932 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 933 | if (r < 0) |
36c16a7c | 934 | return r; |
a16e1123 | 935 | |
1ad6e8b3 LP |
936 | r = unit_set_exec_params(UNIT(m), &exec_params); |
937 | if (r < 0) | |
938 | return r; | |
9fa95f85 | 939 | |
f2341e0a LP |
940 | r = exec_spawn(UNIT(m), |
941 | c, | |
4ad49000 | 942 | &m->exec_context, |
9fa95f85 | 943 | &exec_params, |
613b411c | 944 | m->exec_runtime, |
6bb00842 | 945 | &m->cgroup_context, |
4ad49000 LP |
946 | &pid); |
947 | if (r < 0) | |
36c16a7c | 948 | return r; |
a16e1123 | 949 | |
f75f613d | 950 | r = unit_watch_pid(UNIT(m), pid, true); |
4ad49000 | 951 | if (r < 0) |
36c16a7c | 952 | return r; |
a16e1123 | 953 | |
ef25552e | 954 | *ret_pid = pid; |
a16e1123 | 955 | return 0; |
a16e1123 LP |
956 | } |
957 | ||
9d2f5178 | 958 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
959 | assert(m); |
960 | ||
a0fef983 | 961 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 962 | m->result = f; |
e537352b | 963 | |
aac99f30 | 964 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
4c425434 LP |
965 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_stop); |
966 | ||
29206d46 LP |
967 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
968 | ||
28135da3 | 969 | m->exec_runtime = exec_runtime_destroy(m->exec_runtime); |
613b411c | 970 | |
bb0c0d6f | 971 | unit_destroy_runtime_data(UNIT(m), &m->exec_context); |
e66cf1a3 | 972 | |
00d9ef85 LP |
973 | unit_unref_uid_gid(UNIT(m), true); |
974 | ||
49267b1b YW |
975 | /* Any dependencies based on /proc/self/mountinfo are now stale. Let's re-generate dependencies from |
976 | * .mount unit. */ | |
977 | (void) mount_add_non_exec_dependencies(m); | |
e537352b LP |
978 | } |
979 | ||
9d2f5178 | 980 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
981 | assert(m); |
982 | ||
a0fef983 | 983 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 984 | m->result = f; |
80876c20 LP |
985 | |
986 | mount_set_state(m, MOUNT_MOUNTED); | |
987 | } | |
988 | ||
22af0e58 LP |
989 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
990 | assert(m); | |
991 | ||
992 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
993 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
994 | * ultimately we just mirror the kernel's internal state on this. */ | |
995 | ||
996 | if (m->from_proc_self_mountinfo) | |
997 | mount_enter_mounted(m, f); | |
998 | else | |
999 | mount_enter_dead(m, f); | |
1000 | } | |
1001 | ||
1002 | static int state_to_kill_operation(MountState state) { | |
1003 | switch (state) { | |
1004 | ||
1005 | case MOUNT_REMOUNTING_SIGTERM: | |
a232ebcc ZJS |
1006 | return KILL_RESTART; |
1007 | ||
22af0e58 LP |
1008 | case MOUNT_UNMOUNTING_SIGTERM: |
1009 | return KILL_TERMINATE; | |
1010 | ||
1011 | case MOUNT_REMOUNTING_SIGKILL: | |
1012 | case MOUNT_UNMOUNTING_SIGKILL: | |
1013 | return KILL_KILL; | |
1014 | ||
1015 | default: | |
1016 | return _KILL_OPERATION_INVALID; | |
1017 | } | |
1018 | } | |
1019 | ||
9d2f5178 | 1020 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
1021 | int r; |
1022 | ||
1023 | assert(m); | |
1024 | ||
a0fef983 | 1025 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 1026 | m->result = f; |
e537352b | 1027 | |
cd2086fe LP |
1028 | r = unit_kill_context( |
1029 | UNIT(m), | |
1030 | &m->kill_context, | |
22af0e58 | 1031 | state_to_kill_operation(state), |
cd2086fe LP |
1032 | -1, |
1033 | m->control_pid, | |
1034 | false); | |
1035 | if (r < 0) | |
1036 | goto fail; | |
e537352b | 1037 | |
cd2086fe | 1038 | if (r > 0) { |
36c16a7c | 1039 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 1040 | if (r < 0) |
80876c20 | 1041 | goto fail; |
e537352b | 1042 | |
80876c20 | 1043 | mount_set_state(m, state); |
22af0e58 | 1044 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1045 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 1046 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 1047 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 1048 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 1049 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 1050 | else |
22af0e58 | 1051 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1052 | |
1053 | return; | |
1054 | ||
1055 | fail: | |
f2341e0a | 1056 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 1057 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
1058 | } |
1059 | ||
9d2f5178 | 1060 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
1061 | int r; |
1062 | ||
1063 | assert(m); | |
1064 | ||
7d54a03a LP |
1065 | /* Start counting our attempts */ |
1066 | if (!IN_SET(m->state, | |
1067 | MOUNT_UNMOUNTING, | |
1068 | MOUNT_UNMOUNTING_SIGTERM, | |
e323d2e4 | 1069 | MOUNT_UNMOUNTING_SIGKILL)) |
7d54a03a LP |
1070 | m->n_retry_umount = 0; |
1071 | ||
a16e1123 LP |
1072 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
1073 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 1074 | |
83897d54 | 1075 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
1076 | if (r >= 0 && m->lazy_unmount) |
1077 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
1078 | if (r >= 0 && m->force_unmount) |
1079 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 1080 | if (r < 0) |
e537352b LP |
1081 | goto fail; |
1082 | ||
a16e1123 | 1083 | mount_unwatch_control_pid(m); |
5e94833f | 1084 | |
7d54a03a LP |
1085 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1086 | if (r < 0) | |
e537352b LP |
1087 | goto fail; |
1088 | ||
1089 | mount_set_state(m, MOUNT_UNMOUNTING); | |
e323d2e4 | 1090 | |
e537352b LP |
1091 | return; |
1092 | ||
1093 | fail: | |
f2341e0a | 1094 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 1095 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1096 | } |
1097 | ||
8d567588 | 1098 | static void mount_enter_mounting(Mount *m) { |
e537352b | 1099 | int r; |
cb39ed3f | 1100 | MountParameters *p; |
218cfe23 | 1101 | bool source_is_dir = true; |
e537352b LP |
1102 | |
1103 | assert(m); | |
1104 | ||
25cd4964 | 1105 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
1106 | if (r < 0) |
1107 | goto fail; | |
1108 | ||
218cfe23 DT |
1109 | p = get_mount_parameters_fragment(m); |
1110 | if (p && mount_is_bind(p)) { | |
1111 | r = is_dir(p->what, /* follow = */ true); | |
1112 | if (r < 0 && r != -ENOENT) | |
1113 | log_unit_info_errno(UNIT(m), r, "Failed to determine type of bind mount source '%s', ignoring: %m", p->what); | |
1114 | else if (r == 0) | |
1115 | source_is_dir = false; | |
1116 | } | |
3e5235b0 | 1117 | |
218cfe23 DT |
1118 | if (source_is_dir) |
1119 | (void) mkdir_p_label(m->where, m->directory_mode); | |
1120 | else | |
1121 | (void) touch_file(m->where, /* parents = */ true, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID); | |
1122 | ||
1123 | if (source_is_dir) | |
1124 | unit_warn_if_dir_nonempty(UNIT(m), m->where); | |
4c425434 | 1125 | unit_warn_leftover_processes(UNIT(m), unit_log_leftover_process_start); |
a4634b21 LP |
1126 | |
1127 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
1128 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
1129 | ||
cb39ed3f | 1130 | /* Create the source directory for bind-mounts if needed */ |
5dc60faa AP |
1131 | if (p && mount_is_bind(p)) { |
1132 | r = mkdir_p_label(p->what, m->directory_mode); | |
237ecfee | 1133 | /* mkdir_p_label() can return -EEXIST if the target path exists and is not a directory - which is |
574febda YW |
1134 | * totally OK, in case the user wants us to overmount a non-directory inode. Also -EROFS can be |
1135 | * returned on read-only filesystem. Moreover, -EACCES (and also maybe -EPERM?) may be returned | |
1136 | * when the path is on NFS. See issue #24120. All such errors will be logged in the debug level. */ | |
e5e6b7c2 | 1137 | if (r < 0 && r != -EEXIST) |
574febda YW |
1138 | log_unit_full_errno(UNIT(m), |
1139 | (r == -EROFS || ERRNO_IS_PRIVILEGE(r)) ? LOG_DEBUG : LOG_WARNING, | |
1140 | r, "Failed to make bind mount source '%s', ignoring: %m", p->what); | |
5dc60faa | 1141 | } |
5261ba90 | 1142 | |
b294b79f | 1143 | if (p) { |
17a1c597 ZJS |
1144 | _cleanup_free_ char *opts = NULL; |
1145 | ||
ff0c31bc | 1146 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, NULL, &opts); |
17a1c597 ZJS |
1147 | if (r < 0) |
1148 | goto fail; | |
1149 | ||
b294b79f | 1150 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
1151 | if (r >= 0 && m->sloppy_options) |
1152 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1153 | if (r >= 0 && m->read_write_only) |
1154 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1155 | if (r >= 0 && p->fstype) |
1156 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 1157 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 1158 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 1159 | } else |
e537352b | 1160 | r = -ENOENT; |
e537352b LP |
1161 | if (r < 0) |
1162 | goto fail; | |
1163 | ||
a16e1123 | 1164 | mount_unwatch_control_pid(m); |
5e94833f | 1165 | |
257f1d8e LP |
1166 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1167 | if (r < 0) | |
e537352b LP |
1168 | goto fail; |
1169 | ||
1170 | mount_set_state(m, MOUNT_MOUNTING); | |
1171 | ||
1172 | return; | |
1173 | ||
1174 | fail: | |
f2341e0a | 1175 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1176 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1177 | } |
1178 | ||
850b7410 LP |
1179 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1180 | assert(m); | |
1181 | ||
1182 | /* Only store the first error we encounter */ | |
1183 | if (m->reload_result != MOUNT_SUCCESS) | |
1184 | return; | |
1185 | ||
1186 | m->reload_result = result; | |
1187 | } | |
1188 | ||
9d2f5178 | 1189 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1190 | int r; |
b294b79f | 1191 | MountParameters *p; |
e537352b LP |
1192 | |
1193 | assert(m); | |
1194 | ||
850b7410 LP |
1195 | /* Reset reload result when we are about to start a new remount operation */ |
1196 | m->reload_result = MOUNT_SUCCESS; | |
1197 | ||
a16e1123 LP |
1198 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1199 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1200 | |
b294b79f MO |
1201 | p = get_mount_parameters_fragment(m); |
1202 | if (p) { | |
e537352b LP |
1203 | const char *o; |
1204 | ||
b294b79f MO |
1205 | if (p->options) |
1206 | o = strjoina("remount,", p->options); | |
718db961 | 1207 | else |
e537352b LP |
1208 | o = "remount"; |
1209 | ||
f00929ad | 1210 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1211 | p->what, m->where, |
e86b3761 | 1212 | "-o", o, NULL); |
e86b3761 ZJS |
1213 | if (r >= 0 && m->sloppy_options) |
1214 | r = exec_command_append(m->control_command, "-s", NULL); | |
c600357b MH |
1215 | if (r >= 0 && m->read_write_only) |
1216 | r = exec_command_append(m->control_command, "-w", NULL); | |
b294b79f MO |
1217 | if (r >= 0 && p->fstype) |
1218 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1219 | } else |
e537352b | 1220 | r = -ENOENT; |
60b912f6 | 1221 | if (r < 0) |
e537352b | 1222 | goto fail; |
e537352b | 1223 | |
a16e1123 | 1224 | mount_unwatch_control_pid(m); |
5e94833f | 1225 | |
718db961 LP |
1226 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1227 | if (r < 0) | |
e537352b LP |
1228 | goto fail; |
1229 | ||
1230 | mount_set_state(m, MOUNT_REMOUNTING); | |
1231 | ||
1232 | return; | |
1233 | ||
1234 | fail: | |
f2341e0a | 1235 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1236 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1237 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1238 | } |
1239 | ||
7eba1463 LP |
1240 | static void mount_cycle_clear(Mount *m) { |
1241 | assert(m); | |
1242 | ||
1243 | /* Clear all state we shall forget for this new cycle */ | |
1244 | ||
1245 | m->result = MOUNT_SUCCESS; | |
1246 | m->reload_result = MOUNT_SUCCESS; | |
1247 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1248 | UNIT(m)->reset_accounting = true; | |
1249 | } | |
1250 | ||
e537352b LP |
1251 | static int mount_start(Unit *u) { |
1252 | Mount *m = MOUNT(u); | |
07299350 | 1253 | int r; |
e537352b LP |
1254 | |
1255 | assert(m); | |
1256 | ||
1257 | /* We cannot fulfill this request right now, try again later | |
1258 | * please! */ | |
f2aed307 LP |
1259 | if (IN_SET(m->state, |
1260 | MOUNT_UNMOUNTING, | |
1261 | MOUNT_UNMOUNTING_SIGTERM, | |
17e9d53d YW |
1262 | MOUNT_UNMOUNTING_SIGKILL, |
1263 | MOUNT_CLEANING)) | |
e537352b LP |
1264 | return -EAGAIN; |
1265 | ||
1266 | /* Already on it! */ | |
db39a627 | 1267 | if (IN_SET(m->state, MOUNT_MOUNTING, MOUNT_MOUNTING_DONE)) |
e537352b LP |
1268 | return 0; |
1269 | ||
f2aed307 | 1270 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1271 | |
4b58153d LP |
1272 | r = unit_acquire_invocation_id(u); |
1273 | if (r < 0) | |
1274 | return r; | |
1275 | ||
7eba1463 | 1276 | mount_cycle_clear(m); |
8d567588 | 1277 | mount_enter_mounting(m); |
7eba1463 | 1278 | |
82a2b6bb | 1279 | return 1; |
e537352b LP |
1280 | } |
1281 | ||
1282 | static int mount_stop(Unit *u) { | |
1283 | Mount *m = MOUNT(u); | |
1284 | ||
1285 | assert(m); | |
1286 | ||
1e122561 YW |
1287 | /* When we directly call umount() for a path, then the state of the corresponding mount unit may be |
1288 | * outdated. Let's re-read mountinfo now and update the state. */ | |
1289 | if (m->invalidated_state) | |
1290 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1291 | ||
22af0e58 LP |
1292 | switch (m->state) { |
1293 | ||
1294 | case MOUNT_UNMOUNTING: | |
1295 | case MOUNT_UNMOUNTING_SIGKILL: | |
1296 | case MOUNT_UNMOUNTING_SIGTERM: | |
1297 | /* Already on it */ | |
e537352b LP |
1298 | return 0; |
1299 | ||
22af0e58 LP |
1300 | case MOUNT_MOUNTING: |
1301 | case MOUNT_MOUNTING_DONE: | |
1302 | case MOUNT_REMOUNTING: | |
1303 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1304 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1305 | return 0; | |
e537352b | 1306 | |
22af0e58 LP |
1307 | case MOUNT_REMOUNTING_SIGTERM: |
1308 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1309 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1310 | return 0; | |
1311 | ||
1312 | case MOUNT_REMOUNTING_SIGKILL: | |
1313 | /* as above */ | |
1314 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1315 | return 0; | |
1316 | ||
1317 | case MOUNT_MOUNTED: | |
1318 | mount_enter_unmounting(m); | |
1319 | return 1; | |
1320 | ||
17e9d53d YW |
1321 | case MOUNT_CLEANING: |
1322 | /* If we are currently cleaning, then abort it, brutally. */ | |
1323 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
1324 | return 0; | |
1325 | ||
1e122561 YW |
1326 | case MOUNT_DEAD: |
1327 | case MOUNT_FAILED: | |
1328 | /* The mount has just been unmounted by somebody else. */ | |
1329 | return 0; | |
1330 | ||
22af0e58 | 1331 | default: |
04499a70 | 1332 | assert_not_reached(); |
22af0e58 | 1333 | } |
e537352b LP |
1334 | } |
1335 | ||
1336 | static int mount_reload(Unit *u) { | |
1337 | Mount *m = MOUNT(u); | |
1338 | ||
1339 | assert(m); | |
e537352b LP |
1340 | assert(m->state == MOUNT_MOUNTED); |
1341 | ||
9d2f5178 | 1342 | mount_enter_remounting(m); |
22af0e58 | 1343 | |
2d018ae2 | 1344 | return 1; |
e537352b LP |
1345 | } |
1346 | ||
a16e1123 LP |
1347 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1348 | Mount *m = MOUNT(u); | |
1349 | ||
1350 | assert(m); | |
1351 | assert(f); | |
1352 | assert(fds); | |
1353 | ||
d68c645b LP |
1354 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1355 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1356 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1357 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1358 | |
1359 | if (m->control_pid > 0) | |
d68c645b | 1360 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1361 | |
1362 | if (m->control_command_id >= 0) | |
d68c645b | 1363 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1364 | |
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1369 | Mount *m = MOUNT(u); | |
2c09fb81 | 1370 | int r; |
a16e1123 | 1371 | |
c73f413d | 1372 | assert(m); |
a16e1123 LP |
1373 | assert(u); |
1374 | assert(key); | |
1375 | assert(value); | |
1376 | assert(fds); | |
1377 | ||
1378 | if (streq(key, "state")) { | |
1379 | MountState state; | |
1380 | ||
7fb1d980 YW |
1381 | state = mount_state_from_string(value); |
1382 | if (state < 0) | |
1383 | log_unit_debug_errno(u, state, "Failed to parse state value: %s", value); | |
a16e1123 LP |
1384 | else |
1385 | m->deserialized_state = state; | |
2c09fb81 | 1386 | |
9d2f5178 LP |
1387 | } else if (streq(key, "result")) { |
1388 | MountResult f; | |
a16e1123 | 1389 | |
9d2f5178 LP |
1390 | f = mount_result_from_string(value); |
1391 | if (f < 0) | |
7fb1d980 | 1392 | log_unit_debug_errno(u, f, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1393 | else if (f != MOUNT_SUCCESS) |
1394 | m->result = f; | |
1395 | ||
1396 | } else if (streq(key, "reload-result")) { | |
1397 | MountResult f; | |
1398 | ||
1399 | f = mount_result_from_string(value); | |
1400 | if (f < 0) | |
7fb1d980 | 1401 | log_unit_debug_errno(u, f, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1402 | else if (f != MOUNT_SUCCESS) |
1403 | m->reload_result = f; | |
a16e1123 | 1404 | |
2c09fb81 LP |
1405 | } else if (streq(key, "n-retry-umount")) { |
1406 | ||
1407 | r = safe_atou(value, &m->n_retry_umount); | |
1408 | if (r < 0) | |
7fb1d980 | 1409 | log_unit_debug_errno(u, r, "Failed to parse n-retry-umount value: %s", value); |
2c09fb81 | 1410 | |
a16e1123 | 1411 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1412 | |
7fb1d980 YW |
1413 | r = parse_pid(value, &m->control_pid); |
1414 | if (r < 0) | |
1415 | log_unit_debug_errno(u, r, "Failed to parse control-pid value: %s", value); | |
3f459cd9 | 1416 | |
a16e1123 LP |
1417 | } else if (streq(key, "control-command")) { |
1418 | MountExecCommand id; | |
1419 | ||
f2341e0a LP |
1420 | id = mount_exec_command_from_string(value); |
1421 | if (id < 0) | |
7fb1d980 | 1422 | log_unit_debug_errno(u, id, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
1423 | else { |
1424 | m->control_command_id = id; | |
1425 | m->control_command = m->exec_command + id; | |
1426 | } | |
a16e1123 | 1427 | } else |
f2341e0a | 1428 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1429 | |
1430 | return 0; | |
1431 | } | |
1432 | ||
d1e8e8b5 | 1433 | static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1434 | assert(u); |
1435 | ||
1436 | return state_translation_table[MOUNT(u)->state]; | |
1437 | } | |
1438 | ||
d1e8e8b5 | 1439 | static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1440 | assert(u); |
1441 | ||
a16e1123 | 1442 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1443 | } |
1444 | ||
d1e8e8b5 | 1445 | static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1446 | Mount *m = MOUNT(u); |
1447 | ||
1448 | assert(m); | |
1449 | ||
f2f725e5 ZJS |
1450 | if (m->from_proc_self_mountinfo) |
1451 | return false; | |
1452 | ||
1453 | return true; | |
701cc384 LP |
1454 | } |
1455 | ||
e537352b LP |
1456 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1457 | Mount *m = MOUNT(u); | |
9d2f5178 | 1458 | MountResult f; |
e537352b LP |
1459 | |
1460 | assert(m); | |
1461 | assert(pid >= 0); | |
1462 | ||
8c47c732 LP |
1463 | if (pid != m->control_pid) |
1464 | return; | |
e537352b | 1465 | |
35080486 LP |
1466 | /* So here's the thing, we really want to know before /usr/bin/mount or /usr/bin/umount exit whether |
1467 | * they established/remove a mount. This is important when mounting, but even more so when unmounting | |
1468 | * since we need to deal with nested mounts and otherwise cannot safely determine whether to repeat | |
1469 | * the unmounts. In theory, the kernel fires /proc/self/mountinfo changes off before returning from | |
1470 | * the mount() or umount() syscalls, and thus we should see the changes to the proc file before we | |
1471 | * process the waitid() for the /usr/bin/(u)mount processes. However, this is unfortunately racy: we | |
1472 | * have to waitid() for processes using P_ALL (since we need to reap unexpected children that got | |
1473 | * reparented to PID 1), but when using P_ALL we might end up reaping processes that terminated just | |
1474 | * instants ago, i.e. already after our last event loop iteration (i.e. after the last point we might | |
1475 | * have noticed /proc/self/mountinfo events via epoll). This means event loop priorities for | |
1476 | * processing SIGCHLD vs. /proc/self/mountinfo IO events are not as relevant as we want. To fix that | |
1477 | * race, let's explicitly scan /proc/self/mountinfo before we start processing /usr/bin/(u)mount | |
1478 | * dying. It's ugly, but it makes our ordering systematic again, and makes sure we always see | |
1479 | * /proc/self/mountinfo changes before our mount/umount exits. */ | |
1480 | (void) mount_process_proc_self_mountinfo(u->manager); | |
1481 | ||
e537352b LP |
1482 | m->control_pid = 0; |
1483 | ||
1f0958f6 | 1484 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1485 | f = MOUNT_SUCCESS; |
1486 | else if (code == CLD_EXITED) | |
1487 | f = MOUNT_FAILURE_EXIT_CODE; | |
1488 | else if (code == CLD_KILLED) | |
1489 | f = MOUNT_FAILURE_SIGNAL; | |
1490 | else if (code == CLD_DUMPED) | |
1491 | f = MOUNT_FAILURE_CORE_DUMP; | |
1492 | else | |
04499a70 | 1493 | assert_not_reached(); |
9d2f5178 | 1494 | |
850b7410 LP |
1495 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1496 | mount_set_reload_result(m, f); | |
1497 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1498 | m->result = f; |
8c47c732 | 1499 | |
a16e1123 | 1500 | if (m->control_command) { |
6ea832a2 | 1501 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1502 | |
a16e1123 LP |
1503 | m->control_command = NULL; |
1504 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1505 | } | |
1506 | ||
91bbd9b7 | 1507 | unit_log_process_exit( |
5cc2cd1c | 1508 | u, |
91bbd9b7 LP |
1509 | "Mount process", |
1510 | mount_exec_command_to_string(m->control_command_id), | |
5cc2cd1c | 1511 | f == MOUNT_SUCCESS, |
91bbd9b7 | 1512 | code, status); |
e537352b | 1513 | |
006aabbd AJ |
1514 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1515 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1516 | |
1517 | switch (m->state) { | |
1518 | ||
1519 | case MOUNT_MOUNTING: | |
006aabbd | 1520 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1521 | |
006aabbd AJ |
1522 | if (f == MOUNT_SUCCESS) { |
1523 | /* Either /bin/mount has an unexpected definition of success, | |
1524 | * or someone raced us and we lost. */ | |
1525 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1526 | f = MOUNT_FAILURE_PROTOCOL; | |
1527 | } | |
1528 | mount_enter_dead(m, f); | |
1529 | break; | |
1530 | ||
1531 | case MOUNT_MOUNTING_DONE: | |
1532 | mount_enter_mounted(m, f); | |
e537352b LP |
1533 | break; |
1534 | ||
e2f3b44c | 1535 | case MOUNT_REMOUNTING: |
e2f3b44c | 1536 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1537 | case MOUNT_REMOUNTING_SIGKILL: |
1538 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1539 | break; |
1540 | ||
e537352b | 1541 | case MOUNT_UNMOUNTING: |
e537352b | 1542 | |
3cc96856 | 1543 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1544 | |
1545 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1546 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1547 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1548 | |
1549 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1550 | log_unit_debug(u, "Mount still present, trying again."); | |
1551 | m->n_retry_umount++; | |
1552 | mount_enter_unmounting(m); | |
1553 | } else { | |
006aabbd | 1554 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1555 | mount_enter_mounted(m, f); |
1556 | } | |
1557 | } else | |
3cc96856 | 1558 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1559 | |
e537352b | 1560 | break; |
57018361 AJ |
1561 | |
1562 | case MOUNT_UNMOUNTING_SIGKILL: | |
1563 | case MOUNT_UNMOUNTING_SIGTERM: | |
1564 | mount_enter_dead_or_mounted(m, f); | |
1565 | break; | |
e537352b | 1566 | |
17e9d53d YW |
1567 | case MOUNT_CLEANING: |
1568 | if (m->clean_result == MOUNT_SUCCESS) | |
1569 | m->clean_result = f; | |
1570 | ||
1571 | mount_enter_dead(m, MOUNT_SUCCESS); | |
1572 | break; | |
1573 | ||
e537352b | 1574 | default: |
04499a70 | 1575 | assert_not_reached(); |
e537352b | 1576 | } |
c4e2ceae LP |
1577 | |
1578 | /* Notify clients about changed exit status */ | |
1579 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1580 | } |
1581 | ||
718db961 LP |
1582 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1583 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1584 | |
1585 | assert(m); | |
718db961 | 1586 | assert(m->timer_event_source == source); |
e537352b LP |
1587 | |
1588 | switch (m->state) { | |
1589 | ||
1590 | case MOUNT_MOUNTING: | |
1591 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1592 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1593 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1594 | break; |
1595 | ||
1596 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1597 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1598 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1599 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1600 | break; |
1601 | ||
22af0e58 LP |
1602 | case MOUNT_REMOUNTING_SIGTERM: |
1603 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1604 | |
4819ff03 | 1605 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1606 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1607 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1608 | } else { |
22af0e58 LP |
1609 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1610 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1611 | } |
e537352b LP |
1612 | break; |
1613 | ||
22af0e58 LP |
1614 | case MOUNT_REMOUNTING_SIGKILL: |
1615 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1616 | |
22af0e58 LP |
1617 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1618 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1619 | break; | |
1620 | ||
1621 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1622 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1623 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1624 | break; |
1625 | ||
1626 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1627 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1628 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1629 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1630 | } else { |
22af0e58 LP |
1631 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1632 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1633 | } |
e537352b LP |
1634 | break; |
1635 | ||
e537352b | 1636 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1637 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1638 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1639 | break; |
1640 | ||
17e9d53d YW |
1641 | case MOUNT_CLEANING: |
1642 | log_unit_warning(UNIT(m), "Cleaning timed out. killing."); | |
1643 | ||
1644 | if (m->clean_result == MOUNT_SUCCESS) | |
1645 | m->clean_result = MOUNT_FAILURE_TIMEOUT; | |
1646 | ||
1647 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, 0); | |
1648 | break; | |
1649 | ||
e537352b | 1650 | default: |
04499a70 | 1651 | assert_not_reached(); |
e537352b | 1652 | } |
718db961 LP |
1653 | |
1654 | return 0; | |
e537352b LP |
1655 | } |
1656 | ||
03b8cfed | 1657 | static int mount_setup_new_unit( |
839ee058 LP |
1658 | Manager *m, |
1659 | const char *name, | |
03b8cfed FB |
1660 | const char *what, |
1661 | const char *where, | |
1662 | const char *options, | |
1663 | const char *fstype, | |
ec88d1ea | 1664 | MountProcFlags *ret_flags, |
839ee058 | 1665 | Unit **ret) { |
03b8cfed | 1666 | |
839ee058 | 1667 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1668 | int r; |
03b8cfed | 1669 | |
839ee058 LP |
1670 | assert(m); |
1671 | assert(name); | |
ec88d1ea | 1672 | assert(ret_flags); |
839ee058 LP |
1673 | assert(ret); |
1674 | ||
1675 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1676 | if (r < 0) | |
1677 | return r; | |
03b8cfed | 1678 | |
e10fe042 LP |
1679 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1680 | if (r < 0) | |
1681 | return r; | |
03b8cfed | 1682 | |
e10fe042 LP |
1683 | r = free_and_strdup(&MOUNT(u)->where, where); |
1684 | if (r < 0) | |
1685 | return r; | |
03b8cfed | 1686 | |
9ddaa3e4 | 1687 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1688 | if (r < 0) |
1689 | return r; | |
03b8cfed | 1690 | |
09f4d843 ZJS |
1691 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the |
1692 | * time we load the unit file for it (and thus add in extra deps right after) we know what source to | |
1693 | * attributes the deps to. */ | |
6d7e89b0 LP |
1694 | MOUNT(u)->from_proc_self_mountinfo = true; |
1695 | ||
b9e6d23d YW |
1696 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
1697 | if (r < 0) | |
1698 | return r; | |
1699 | ||
09f4d843 ZJS |
1700 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything |
1701 | * else is loaded in now. */ | |
cfcd4318 | 1702 | unit_add_to_load_queue(u); |
26e35b16 | 1703 | |
ec88d1ea | 1704 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1705 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1706 | return 0; |
1707 | } | |
1708 | ||
1709 | static int mount_setup_existing_unit( | |
1710 | Unit *u, | |
1711 | const char *what, | |
1712 | const char *where, | |
1713 | const char *options, | |
1714 | const char *fstype, | |
ec88d1ea | 1715 | MountProcFlags *ret_flags) { |
03b8cfed | 1716 | |
bbee24bc | 1717 | int r; |
03b8cfed FB |
1718 | |
1719 | assert(u); | |
4bb68f2f | 1720 | assert(ret_flags); |
03b8cfed FB |
1721 | |
1722 | if (!MOUNT(u)->where) { | |
1723 | MOUNT(u)->where = strdup(where); | |
1724 | if (!MOUNT(u)->where) | |
1725 | return -ENOMEM; | |
1726 | } | |
1727 | ||
4bb68f2f LP |
1728 | /* In case we have multiple mounts established on the same mount point, let's merge flags set already |
1729 | * for the current unit. Note that the flags field is reset on each iteration of reading | |
1730 | * /proc/self/mountinfo, hence we know for sure anything already set here is from the current | |
1731 | * iteration and thus worthy of taking into account. */ | |
1732 | MountProcFlags flags = | |
1733 | MOUNT(u)->proc_flags | MOUNT_PROC_IS_MOUNTED; | |
1734 | ||
9ddaa3e4 | 1735 | r = update_parameters_proc_self_mountinfo(MOUNT(u), what, options, fstype); |
bbee24bc LP |
1736 | if (r < 0) |
1737 | return r; | |
ec88d1ea LP |
1738 | if (r > 0) |
1739 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1740 | |
4bb68f2f LP |
1741 | /* There are two conditions when we consider a mount point just mounted: when we haven't seen it in |
1742 | * /proc/self/mountinfo before or when MOUNT_MOUNTING is our current state. Why bother with the | |
1743 | * latter? Shouldn't that be covered by the former? No, during reload it is not because we might then | |
1744 | * encounter a new /proc/self/mountinfo in combination with an old mount unit state (since it stems | |
1745 | * from the serialized state), and need to catch up. Since we know that the MOUNT_MOUNTING state is | |
1746 | * reached when we wait for the mount to appear we hence can assume that if we are in it, we are | |
1747 | * actually seeing it established for the first time. */ | |
1748 | if (!MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->state == MOUNT_MOUNTING) | |
ec88d1ea | 1749 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1750 | |
1751 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1752 | |
f8064c4f LP |
1753 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1754 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1755 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1756 | u->load_state = UNIT_LOADED; |
1757 | u->load_error = 0; | |
1758 | ||
ec88d1ea | 1759 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1760 | } |
1761 | ||
ec88d1ea | 1762 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1763 | /* If things changed, then make sure that all deps are regenerated. Let's |
1764 | * first remove all automatic deps, and then add in the new ones. */ | |
bf7eedbf | 1765 | r = mount_add_non_exec_dependencies(MOUNT(u)); |
a3742204 LP |
1766 | if (r < 0) |
1767 | return r; | |
1768 | } | |
03b8cfed | 1769 | |
ec88d1ea | 1770 | *ret_flags = flags; |
03b8cfed FB |
1771 | return 0; |
1772 | } | |
1773 | ||
628c89cc | 1774 | static int mount_setup_unit( |
e537352b LP |
1775 | Manager *m, |
1776 | const char *what, | |
1777 | const char *where, | |
1778 | const char *options, | |
1779 | const char *fstype, | |
e537352b | 1780 | bool set_flags) { |
057d9ab8 | 1781 | |
03b8cfed | 1782 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1783 | MountProcFlags flags; |
057d9ab8 LP |
1784 | Unit *u; |
1785 | int r; | |
b08d03ff | 1786 | |
f50e0a01 | 1787 | assert(m); |
b08d03ff LP |
1788 | assert(what); |
1789 | assert(where); | |
e537352b LP |
1790 | assert(options); |
1791 | assert(fstype); | |
1792 | ||
e537352b LP |
1793 | /* Ignore API mount points. They should never be referenced in |
1794 | * dependencies ever. */ | |
33ff02c9 | 1795 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1796 | return 0; |
b08d03ff | 1797 | |
8d567588 LP |
1798 | if (streq(fstype, "autofs")) |
1799 | return 0; | |
1800 | ||
4e85aff4 LP |
1801 | /* probably some kind of swap, ignore */ |
1802 | if (!is_path(where)) | |
b08d03ff LP |
1803 | return 0; |
1804 | ||
7410616c | 1805 | r = unit_name_from_path(where, ".mount", &e); |
03e52e8c | 1806 | if (r < 0) |
2c905207 | 1807 | return log_struct_errno( |
03e52e8c | 1808 | LOG_WARNING, r, |
2c905207 LP |
1809 | "MESSAGE_ID=" SD_MESSAGE_MOUNT_POINT_PATH_NOT_SUITABLE_STR, |
1810 | "MOUNT_POINT=%s", where, | |
03e52e8c YW |
1811 | LOG_MESSAGE("Failed to generate valid unit name from mount point path '%s', ignoring mount point: %m", |
1812 | where)); | |
b08d03ff | 1813 | |
7d17cfbc | 1814 | u = manager_get_unit(m, e); |
839ee058 | 1815 | if (u) |
03b8cfed | 1816 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 | 1817 | else |
09f4d843 ZJS |
1818 | /* First time we see this mount point meaning that it's not been initiated by a mount unit |
1819 | * but rather by the sysadmin having called mount(8) directly. */ | |
839ee058 | 1820 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); |
03b8cfed | 1821 | if (r < 0) |
2c905207 | 1822 | return log_warning_errno(r, "Failed to set up mount unit for '%s': %m", where); |
ff5f34d0 | 1823 | |
ec88d1ea LP |
1824 | /* If the mount changed properties or state, let's notify our clients */ |
1825 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1826 | unit_add_to_dbus_queue(u); |
c1e1601e | 1827 | |
ec88d1ea LP |
1828 | if (set_flags) |
1829 | MOUNT(u)->proc_flags = flags; | |
1830 | ||
b08d03ff | 1831 | return 0; |
b08d03ff LP |
1832 | } |
1833 | ||
ef734fd6 | 1834 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
13dcfe46 ZJS |
1835 | _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; |
1836 | _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; | |
ba0d56f5 | 1837 | int r; |
b08d03ff LP |
1838 | |
1839 | assert(m); | |
1840 | ||
e2857b3d | 1841 | r = libmount_parse(NULL, NULL, &table, &iter); |
5cca8def | 1842 | if (r < 0) |
628c89cc | 1843 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1844 | |
5cca8def | 1845 | for (;;) { |
95b862b0 | 1846 | struct libmnt_fs *fs; |
8d3ae2bd | 1847 | const char *device, *path, *options, *fstype; |
b08d03ff | 1848 | |
13dcfe46 ZJS |
1849 | r = mnt_table_next_fs(table, iter, &fs); |
1850 | if (r == 1) | |
5cca8def | 1851 | break; |
13dcfe46 ZJS |
1852 | if (r < 0) |
1853 | return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1854 | |
8d3ae2bd CL |
1855 | device = mnt_fs_get_source(fs); |
1856 | path = mnt_fs_get_target(fs); | |
1857 | options = mnt_fs_get_options(fs); | |
1858 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1859 | |
c0a7f8d3 DM |
1860 | if (!device || !path) |
1861 | continue; | |
1862 | ||
9d1b2b22 | 1863 | device_found_node(m, device, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1864 | |
9d1b2b22 | 1865 | (void) mount_setup_unit(m, device, path, options, fstype, set_flags); |
b08d03ff LP |
1866 | } |
1867 | ||
ba0d56f5 | 1868 | return 0; |
e537352b LP |
1869 | } |
1870 | ||
1871 | static void mount_shutdown(Manager *m) { | |
1872 | assert(m); | |
1873 | ||
5dcadb4c | 1874 | m->mount_event_source = sd_event_source_disable_unref(m->mount_event_source); |
718db961 | 1875 | |
d379d442 KZ |
1876 | mnt_unref_monitor(m->mount_monitor); |
1877 | m->mount_monitor = NULL; | |
b08d03ff LP |
1878 | } |
1879 | ||
7a7821c8 | 1880 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1881 | Mount *m = MOUNT(u); |
7a7821c8 | 1882 | usec_t t; |
68db7a3b ZJS |
1883 | int r; |
1884 | ||
c73f413d FS |
1885 | assert(m); |
1886 | assert(u); | |
1887 | ||
68db7a3b ZJS |
1888 | if (!m->timer_event_source) |
1889 | return 0; | |
1890 | ||
7a7821c8 | 1891 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1892 | if (r < 0) |
1893 | return r; | |
7a7821c8 LP |
1894 | if (t == USEC_INFINITY) |
1895 | return 0; | |
68db7a3b | 1896 | |
7a7821c8 | 1897 | *timeout = t; |
68db7a3b ZJS |
1898 | return 1; |
1899 | } | |
1900 | ||
04eb582a | 1901 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1902 | Unit *u; |
1903 | int r; | |
1904 | ||
1905 | assert(m); | |
1906 | ||
1907 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1908 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1909 | ||
1910 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1911 | if (!u) { | |
a581e45a | 1912 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1913 | if (r < 0) { |
1914 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1915 | return; | |
1916 | } | |
11222d0f LP |
1917 | } |
1918 | ||
1919 | u->perpetual = true; | |
1920 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1921 | ||
1922 | unit_add_to_load_queue(u); | |
1923 | unit_add_to_dbus_queue(u); | |
1924 | } | |
1925 | ||
1926 | static bool mount_is_mounted(Mount *m) { | |
1927 | assert(m); | |
1928 | ||
ec88d1ea | 1929 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1930 | } |
1931 | ||
edc027b4 | 1932 | static int mount_on_ratelimit_expire(sd_event_source *s, void *userdata) { |
99534007 | 1933 | Manager *m = ASSERT_PTR(userdata); |
c29e6a95 | 1934 | Job *j; |
edc027b4 | 1935 | |
c29e6a95 MS |
1936 | /* Let's enqueue all start jobs that were previously skipped because of active ratelimit. */ |
1937 | HASHMAP_FOREACH(j, m->jobs) { | |
1938 | if (j->unit->type != UNIT_MOUNT) | |
1939 | continue; | |
1940 | ||
1941 | job_add_to_run_queue(j); | |
1942 | } | |
1943 | ||
b0c4b282 LP |
1944 | /* By entering ratelimited state we made all mount start jobs not runnable, now rate limit is over so |
1945 | * let's make sure we dispatch them in the next iteration. */ | |
1946 | manager_trigger_run_queue(m); | |
edc027b4 MS |
1947 | |
1948 | return 0; | |
1949 | } | |
1950 | ||
ba64af90 | 1951 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1952 | int r; |
d379d442 | 1953 | |
b08d03ff LP |
1954 | assert(m); |
1955 | ||
8d3ae2bd CL |
1956 | mnt_init_debug(0); |
1957 | ||
d379d442 | 1958 | if (!m->mount_monitor) { |
24a4542c | 1959 | unsigned mount_rate_limit_burst = 5; |
d379d442 | 1960 | int fd; |
ef734fd6 | 1961 | |
d379d442 KZ |
1962 | m->mount_monitor = mnt_new_monitor(); |
1963 | if (!m->mount_monitor) { | |
ba64af90 | 1964 | log_oom(); |
718db961 | 1965 | goto fail; |
d379d442 | 1966 | } |
29083707 | 1967 | |
d379d442 | 1968 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1969 | if (r < 0) { |
1970 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1971 | goto fail; |
ba64af90 LP |
1972 | } |
1973 | ||
d379d442 | 1974 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1975 | if (r < 0) { |
1976 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1977 | goto fail; |
ba64af90 | 1978 | } |
90598531 | 1979 | |
d379d442 KZ |
1980 | /* mnt_unref_monitor() will close the fd */ |
1981 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1982 | if (r < 0) { |
1983 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1984 | goto fail; |
ba64af90 | 1985 | } |
befb6d54 | 1986 | |
d379d442 | 1987 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1988 | if (r < 0) { |
1989 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1990 | goto fail; |
ba64af90 | 1991 | } |
befb6d54 | 1992 | |
83231637 | 1993 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1994 | if (r < 0) { |
1995 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1996 | goto fail; |
ba64af90 | 1997 | } |
7dfbe2e3 | 1998 | |
24a4542c LB |
1999 | /* Let users override the default (5 in 1s), as it stalls the boot sequence on busy systems. */ |
2000 | const char *e = secure_getenv("SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST"); | |
2001 | if (e) { | |
2002 | r = safe_atou(e, &mount_rate_limit_burst); | |
2003 | if (r < 0) | |
2004 | log_debug("Invalid value in $SYSTEMD_DEFAULT_MOUNT_RATE_LIMIT_BURST, ignoring: %s", e); | |
2005 | } | |
2006 | ||
2007 | r = sd_event_source_set_ratelimit(m->mount_event_source, 1 * USEC_PER_SEC, mount_rate_limit_burst); | |
d586f642 MS |
2008 | if (r < 0) { |
2009 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
2010 | goto fail; | |
2011 | } | |
2012 | ||
edc027b4 MS |
2013 | r = sd_event_source_set_ratelimit_expire_callback(m->mount_event_source, mount_on_ratelimit_expire); |
2014 | if (r < 0) { | |
2015 | log_error_errno(r, "Failed to enable rate limit for mount events: %m"); | |
2016 | goto fail; | |
2017 | } | |
2018 | ||
d379d442 | 2019 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
2020 | } |
2021 | ||
e62d8c39 ZJS |
2022 | r = mount_load_proc_self_mountinfo(m, false); |
2023 | if (r < 0) | |
b08d03ff LP |
2024 | goto fail; |
2025 | ||
ba64af90 | 2026 | return; |
b08d03ff LP |
2027 | |
2028 | fail: | |
2029 | mount_shutdown(m); | |
5cb5a6ff LP |
2030 | } |
2031 | ||
fcd8e119 LP |
2032 | static int drain_libmount(Manager *m) { |
2033 | bool rescan = false; | |
2034 | int r; | |
2035 | ||
2036 | assert(m); | |
2037 | ||
2038 | /* Drain all events and verify that the event is valid. | |
2039 | * | |
2040 | * Note that libmount also monitors /run/mount mkdir if the directory does not exist yet. The mkdir | |
2041 | * may generate event which is irrelevant for us. | |
2042 | * | |
2043 | * error: r < 0; valid: r == 0, false positive: r == 1 */ | |
2044 | do { | |
2045 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
2046 | if (r < 0) | |
2047 | return log_error_errno(r, "Failed to drain libmount events: %m"); | |
2048 | if (r == 0) | |
2049 | rescan = true; | |
2050 | } while (r == 0); | |
2051 | ||
2052 | return rescan; | |
2053 | } | |
2054 | ||
35080486 | 2055 | static int mount_process_proc_self_mountinfo(Manager *m) { |
6688b72d | 2056 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
ec8126d7 | 2057 | const char *what; |
ef734fd6 LP |
2058 | int r; |
2059 | ||
2060 | assert(m); | |
ef734fd6 | 2061 | |
fcd8e119 LP |
2062 | r = drain_libmount(m); |
2063 | if (r <= 0) | |
2064 | return r; | |
ef734fd6 | 2065 | |
4f0eedb7 ZJS |
2066 | r = mount_load_proc_self_mountinfo(m, true); |
2067 | if (r < 0) { | |
e537352b | 2068 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
2069 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
2070 | MOUNT(u)->proc_flags = 0; | |
e537352b | 2071 | |
ec8126d7 | 2072 | return 0; |
ef734fd6 LP |
2073 | } |
2074 | ||
2075 | manager_dispatch_load_queue(m); | |
2076 | ||
595ed347 MS |
2077 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
2078 | Mount *mount = MOUNT(u); | |
ef734fd6 | 2079 | |
1e122561 YW |
2080 | mount->invalidated_state = false; |
2081 | ||
11222d0f | 2082 | if (!mount_is_mounted(mount)) { |
e537352b | 2083 | |
1483892a | 2084 | /* A mount point is not around right now. It might be gone, or might never have |
394763f6 LP |
2085 | * existed. */ |
2086 | ||
2087 | if (mount->from_proc_self_mountinfo && | |
6688b72d | 2088 | mount->parameters_proc_self_mountinfo.what) |
394763f6 | 2089 | /* Remember that this device might just have disappeared */ |
6688b72d | 2090 | if (set_put_strdup_full(&gone, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2091 | log_oom(); /* we don't care too much about OOM here... */ |
fcd8b266 | 2092 | |
ef734fd6 | 2093 | mount->from_proc_self_mountinfo = false; |
9ddaa3e4 | 2094 | assert_se(update_parameters_proc_self_mountinfo(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
2095 | |
2096 | switch (mount->state) { | |
2097 | ||
2098 | case MOUNT_MOUNTED: | |
7eba1463 | 2099 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 2100 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
2101 | break; |
2102 | ||
2fa0bd7d YW |
2103 | case MOUNT_MOUNTING_DONE: |
2104 | /* The mount command may add the corresponding proc mountinfo entry and | |
2105 | * then remove it because of an internal error. E.g., fuse.sshfs seems | |
2106 | * to do that when the connection fails. See #17617. To handle such the | |
2107 | * case, let's once set the state back to mounting. Then, the unit can | |
2108 | * correctly enter the failed state later in mount_sigchld(). */ | |
2109 | mount_set_state(mount, MOUNT_MOUNTING); | |
2110 | break; | |
2111 | ||
e537352b | 2112 | default: |
e537352b | 2113 | break; |
e537352b LP |
2114 | } |
2115 | ||
ec88d1ea | 2116 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 2117 | |
fcd8b266 | 2118 | /* A mount point was added or changed */ |
e537352b LP |
2119 | |
2120 | switch (mount->state) { | |
2121 | ||
2122 | case MOUNT_DEAD: | |
fdf20a31 | 2123 | case MOUNT_FAILED: |
4b58153d LP |
2124 | |
2125 | /* This has just been mounted by somebody else, follow the state change, but let's | |
2126 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
2127 | (void) unit_acquire_invocation_id(u); |
2128 | mount_cycle_clear(mount); | |
9d2f5178 | 2129 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
2130 | break; |
2131 | ||
2132 | case MOUNT_MOUNTING: | |
5bcb0f2b | 2133 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
2134 | break; |
2135 | ||
2136 | default: | |
1483892a LP |
2137 | /* Nothing really changed, but let's issue an notification call nonetheless, |
2138 | * in case somebody is waiting for this. (e.g. file system ro/rw | |
2139 | * remounts.) */ | |
e537352b LP |
2140 | mount_set_state(mount, mount->state); |
2141 | break; | |
2142 | } | |
394763f6 | 2143 | } |
fcd8b266 | 2144 | |
11222d0f | 2145 | if (mount_is_mounted(mount) && |
394763f6 | 2146 | mount->from_proc_self_mountinfo && |
6688b72d | 2147 | mount->parameters_proc_self_mountinfo.what) |
b6418dc9 | 2148 | /* Track devices currently used */ |
6688b72d | 2149 | if (set_put_strdup_full(&around, &path_hash_ops_free, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 2150 | log_oom(); |
e537352b LP |
2151 | |
2152 | /* Reset the flags for later calls */ | |
ec88d1ea | 2153 | mount->proc_flags = 0; |
e537352b | 2154 | } |
718db961 | 2155 | |
90e74a66 | 2156 | SET_FOREACH(what, gone) { |
fcd8b266 LP |
2157 | if (set_contains(around, what)) |
2158 | continue; | |
2159 | ||
2160 | /* Let the device units know that the device is no longer mounted */ | |
b1ba0ce8 | 2161 | device_found_node(m, what, DEVICE_NOT_FOUND, DEVICE_FOUND_MOUNT); |
fcd8b266 | 2162 | } |
ec8126d7 ZJS |
2163 | |
2164 | return 0; | |
e537352b LP |
2165 | } |
2166 | ||
35080486 | 2167 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 2168 | Manager *m = ASSERT_PTR(userdata); |
35080486 | 2169 | |
35080486 LP |
2170 | assert(revents & EPOLLIN); |
2171 | ||
2172 | return mount_process_proc_self_mountinfo(m); | |
2173 | } | |
2174 | ||
1e122561 YW |
2175 | int mount_invalidate_state_by_path(Manager *manager, const char *path) { |
2176 | _cleanup_free_ char *name = NULL; | |
2177 | Unit *u; | |
2178 | int r; | |
2179 | ||
2180 | assert(manager); | |
2181 | assert(path); | |
2182 | ||
2183 | r = unit_name_from_path(path, ".mount", &name); | |
2184 | if (r < 0) | |
2185 | return log_debug_errno(r, "Failed to generate unit name from path \"%s\", ignoring: %m", path); | |
2186 | ||
2187 | u = manager_get_unit(manager, name); | |
2188 | if (!u) | |
2189 | return -ENOENT; | |
2190 | ||
2191 | MOUNT(u)->invalidated_state = true; | |
2192 | return 0; | |
2193 | } | |
2194 | ||
fdf20a31 | 2195 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
2196 | Mount *m = MOUNT(u); |
2197 | ||
2198 | assert(m); | |
2199 | ||
fdf20a31 | 2200 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
2201 | mount_set_state(m, MOUNT_DEAD); |
2202 | ||
9d2f5178 LP |
2203 | m->result = MOUNT_SUCCESS; |
2204 | m->reload_result = MOUNT_SUCCESS; | |
17e9d53d | 2205 | m->clean_result = MOUNT_SUCCESS; |
5632e374 LP |
2206 | } |
2207 | ||
a721cd00 | 2208 | static int mount_kill(Unit *u, KillWho who, int signo, int code, int value, sd_bus_error *error) { |
22af0e58 LP |
2209 | Mount *m = MOUNT(u); |
2210 | ||
2211 | assert(m); | |
2212 | ||
a721cd00 | 2213 | return unit_kill_common(u, who, signo, code, value, -1, m->control_pid, error); |
8a0867d6 LP |
2214 | } |
2215 | ||
291d565a LP |
2216 | static int mount_control_pid(Unit *u) { |
2217 | Mount *m = MOUNT(u); | |
2218 | ||
2219 | assert(m); | |
2220 | ||
2221 | return m->control_pid; | |
2222 | } | |
2223 | ||
17e9d53d YW |
2224 | static int mount_clean(Unit *u, ExecCleanMask mask) { |
2225 | _cleanup_strv_free_ char **l = NULL; | |
2226 | Mount *m = MOUNT(u); | |
2227 | int r; | |
2228 | ||
2229 | assert(m); | |
2230 | assert(mask != 0); | |
2231 | ||
2232 | if (m->state != MOUNT_DEAD) | |
2233 | return -EBUSY; | |
2234 | ||
2235 | r = exec_context_get_clean_directories(&m->exec_context, u->manager->prefix, mask, &l); | |
2236 | if (r < 0) | |
2237 | return r; | |
2238 | ||
2239 | if (strv_isempty(l)) | |
2240 | return -EUNATCH; | |
2241 | ||
2242 | mount_unwatch_control_pid(m); | |
2243 | m->clean_result = MOUNT_SUCCESS; | |
2244 | m->control_command = NULL; | |
2245 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
2246 | ||
2247 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->exec_context.timeout_clean_usec)); | |
2248 | if (r < 0) | |
2249 | goto fail; | |
2250 | ||
2251 | r = unit_fork_and_watch_rm_rf(u, l, &m->control_pid); | |
2252 | if (r < 0) | |
2253 | goto fail; | |
2254 | ||
2255 | mount_set_state(m, MOUNT_CLEANING); | |
2256 | ||
2257 | return 0; | |
2258 | ||
2259 | fail: | |
2260 | log_unit_warning_errno(u, r, "Failed to initiate cleaning: %m"); | |
2261 | m->clean_result = MOUNT_FAILURE_RESOURCES; | |
5dcadb4c | 2262 | m->timer_event_source = sd_event_source_disable_unref(m->timer_event_source); |
17e9d53d YW |
2263 | return r; |
2264 | } | |
2265 | ||
2266 | static int mount_can_clean(Unit *u, ExecCleanMask *ret) { | |
2267 | Mount *m = MOUNT(u); | |
2268 | ||
2269 | assert(m); | |
2270 | ||
2271 | return exec_context_get_clean_mask(&m->exec_context, ret); | |
2272 | } | |
2273 | ||
705578c3 | 2274 | static int mount_can_start(Unit *u) { |
9727f242 DDM |
2275 | Mount *m = MOUNT(u); |
2276 | int r; | |
2277 | ||
2278 | assert(m); | |
2279 | ||
2280 | r = unit_test_start_limit(u); | |
2281 | if (r < 0) { | |
2282 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
2283 | return r; | |
2284 | } | |
2285 | ||
705578c3 | 2286 | return 1; |
9727f242 DDM |
2287 | } |
2288 | ||
47261967 LP |
2289 | static int mount_subsystem_ratelimited(Manager *m) { |
2290 | assert(m); | |
2291 | ||
2292 | if (!m->mount_event_source) | |
2293 | return false; | |
2294 | ||
2295 | return sd_event_source_is_ratelimited(m->mount_event_source); | |
2296 | } | |
2297 | ||
a16e1123 | 2298 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
48d83e33 | 2299 | [MOUNT_EXEC_MOUNT] = "ExecMount", |
a16e1123 LP |
2300 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", |
2301 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
2302 | }; | |
2303 | ||
2304 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
2305 | ||
9d2f5178 | 2306 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
48d83e33 ZJS |
2307 | [MOUNT_SUCCESS] = "success", |
2308 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
2309 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
2310 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
2311 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
2312 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", | |
07299350 | 2313 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", |
48d83e33 | 2314 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
2315 | }; |
2316 | ||
2317 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
2318 | ||
87f0e418 | 2319 | const UnitVTable mount_vtable = { |
7d17cfbc | 2320 | .object_size = sizeof(Mount), |
718db961 LP |
2321 | .exec_context_offset = offsetof(Mount, exec_context), |
2322 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
2323 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 2324 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
3ef63c31 | 2325 | |
f975e971 LP |
2326 | .sections = |
2327 | "Unit\0" | |
2328 | "Mount\0" | |
2329 | "Install\0", | |
4ad49000 | 2330 | .private_section = "Mount", |
71645aca | 2331 | |
c80a9a33 LP |
2332 | .can_transient = true, |
2333 | .can_fail = true, | |
755021d4 | 2334 | .exclude_from_switch_root_serialization = true, |
c80a9a33 | 2335 | |
e537352b LP |
2336 | .init = mount_init, |
2337 | .load = mount_load, | |
034c6ed7 | 2338 | .done = mount_done, |
e537352b | 2339 | |
f50e0a01 | 2340 | .coldplug = mount_coldplug, |
01400460 | 2341 | .catchup = mount_catchup, |
f50e0a01 | 2342 | |
034c6ed7 | 2343 | .dump = mount_dump, |
5cb5a6ff | 2344 | |
e537352b LP |
2345 | .start = mount_start, |
2346 | .stop = mount_stop, | |
2347 | .reload = mount_reload, | |
2348 | ||
8a0867d6 | 2349 | .kill = mount_kill, |
17e9d53d YW |
2350 | .clean = mount_clean, |
2351 | .can_clean = mount_can_clean, | |
8a0867d6 | 2352 | |
a16e1123 LP |
2353 | .serialize = mount_serialize, |
2354 | .deserialize_item = mount_deserialize_item, | |
2355 | ||
f50e0a01 | 2356 | .active_state = mount_active_state, |
10a94420 | 2357 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2358 | |
52a12341 YW |
2359 | .will_restart = unit_will_restart_default, |
2360 | ||
f2f725e5 | 2361 | .may_gc = mount_may_gc, |
39c79477 | 2362 | .is_extrinsic = mount_is_extrinsic, |
701cc384 | 2363 | |
e537352b | 2364 | .sigchld_event = mount_sigchld_event, |
e537352b | 2365 | |
fdf20a31 | 2366 | .reset_failed = mount_reset_failed, |
291d565a LP |
2367 | |
2368 | .control_pid = mount_control_pid, | |
5632e374 | 2369 | |
74c964d3 LP |
2370 | .bus_set_property = bus_mount_set_property, |
2371 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2372 | |
68db7a3b ZJS |
2373 | .get_timeout = mount_get_timeout, |
2374 | ||
04eb582a | 2375 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2376 | .enumerate = mount_enumerate, |
c6918296 | 2377 | .shutdown = mount_shutdown, |
47261967 | 2378 | .subsystem_ratelimited = mount_subsystem_ratelimited, |
c6918296 MS |
2379 | |
2380 | .status_message_formats = { | |
2381 | .starting_stopping = { | |
2382 | [0] = "Mounting %s...", | |
2383 | [1] = "Unmounting %s...", | |
2384 | }, | |
2385 | .finished_start_job = { | |
2386 | [JOB_DONE] = "Mounted %s.", | |
2387 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2388 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2389 | }, | |
2390 | .finished_stop_job = { | |
2391 | [JOB_DONE] = "Unmounted %s.", | |
2392 | [JOB_FAILED] = "Failed unmounting %s.", | |
2393 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2394 | }, | |
2395 | }, | |
9727f242 | 2396 | |
705578c3 | 2397 | .can_start = mount_can_start, |
b2bfd121 LP |
2398 | |
2399 | .notify_plymouth = true, | |
5cb5a6ff | 2400 | }; |