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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
a7334b09 LP |
6 | ***/ |
7 | ||
5cb5a6ff | 8 | #include <errno.h> |
4f5dd394 | 9 | #include <signal.h> |
b08d03ff | 10 | #include <stdio.h> |
ef734fd6 | 11 | #include <sys/epoll.h> |
5cb5a6ff | 12 | |
227b8a76 MO |
13 | #include <libmount.h> |
14 | ||
20ad4cfd | 15 | #include "sd-messages.h" |
4f5dd394 | 16 | |
b5efdb8a | 17 | #include "alloc-util.h" |
4139c1b2 | 18 | #include "dbus-mount.h" |
4f5dd394 | 19 | #include "escape.h" |
9a57c629 | 20 | #include "exit-status.h" |
f97b34a6 | 21 | #include "format-util.h" |
4f5dd394 LP |
22 | #include "fstab-util.h" |
23 | #include "log.h" | |
24 | #include "manager.h" | |
25 | #include "mkdir.h" | |
26 | #include "mount-setup.h" | |
4e036b7a | 27 | #include "mount-util.h" |
4f5dd394 | 28 | #include "mount.h" |
6bedfcbb | 29 | #include "parse-util.h" |
4f5dd394 | 30 | #include "path-util.h" |
7b3e062c | 31 | #include "process-util.h" |
4f5dd394 | 32 | #include "special.h" |
8b43440b | 33 | #include "string-table.h" |
b5efdb8a | 34 | #include "string-util.h" |
4f5dd394 LP |
35 | #include "strv.h" |
36 | #include "unit-name.h" | |
37 | #include "unit.h" | |
5cb5a6ff | 38 | |
7d54a03a LP |
39 | #define RETRY_UMOUNT_MAX 32 |
40 | ||
4e920142 ZJS |
41 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
42 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
43 | ||
f50e0a01 LP |
44 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
45 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
46 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 47 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 48 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 49 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 50 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
51 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
52 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
53 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
54 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 55 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 56 | }; |
5cb5a6ff | 57 | |
718db961 LP |
58 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
59 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
60 | ||
c634f3d2 LP |
61 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
62 | return IN_SET(state, | |
63 | MOUNT_MOUNTING, | |
64 | MOUNT_MOUNTING_DONE, | |
65 | MOUNT_REMOUNTING, | |
66 | MOUNT_REMOUNTING_SIGTERM, | |
67 | MOUNT_REMOUNTING_SIGKILL, | |
68 | MOUNT_UNMOUNTING, | |
69 | MOUNT_UNMOUNTING_SIGTERM, | |
70 | MOUNT_UNMOUNTING_SIGKILL); | |
71 | } | |
72 | ||
affc3d83 | 73 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 74 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
75 | return true; |
76 | ||
affc3d83 | 77 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
78 | return true; |
79 | ||
80 | return false; | |
81 | } | |
82 | ||
e6a7b9f4 | 83 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
84 | assert(p); |
85 | ||
86 | return mount_needs_network(p->options, p->fstype); | |
87 | } | |
88 | ||
d3bd0986 MK |
89 | static bool mount_is_loop(const MountParameters *p) { |
90 | assert(p); | |
91 | ||
92 | if (fstab_test_option(p->options, "loop\0")) | |
93 | return true; | |
94 | ||
95 | return false; | |
96 | } | |
97 | ||
e6a7b9f4 | 98 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
99 | assert(p); |
100 | ||
d15d0333 | 101 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
102 | return true; |
103 | ||
d15d0333 | 104 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
105 | return true; |
106 | ||
107 | return false; | |
108 | } | |
109 | ||
e6a7b9f4 | 110 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
111 | assert(p); |
112 | ||
d15d0333 | 113 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
114 | } |
115 | ||
2b14df4a FB |
116 | static bool mount_is_automount(const MountParameters *p) { |
117 | assert(p); | |
118 | ||
119 | return fstab_test_option(p->options, | |
120 | "comment=systemd.automount\0" | |
121 | "x-systemd.automount\0"); | |
122 | } | |
123 | ||
ebc8968b FB |
124 | static bool mount_is_bound_to_device(const Mount *m) { |
125 | const MountParameters *p; | |
126 | ||
127 | if (m->from_fragment) | |
128 | return true; | |
129 | ||
130 | p = &m->parameters_proc_self_mountinfo; | |
131 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
132 | } | |
133 | ||
e6a7b9f4 | 134 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
135 | assert(p); |
136 | ||
11041c84 | 137 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 138 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 139 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
140 | return false; |
141 | ||
142 | if (mount_is_bind(p)) | |
143 | return false; | |
144 | ||
d15d0333 ZJS |
145 | return fstab_test_option(p->options, |
146 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
147 | } |
148 | ||
a16e1123 LP |
149 | static void mount_init(Unit *u) { |
150 | Mount *m = MOUNT(u); | |
5cb5a6ff | 151 | |
a16e1123 | 152 | assert(u); |
ac155bb8 | 153 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 154 | |
1f19a534 | 155 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
156 | |
157 | m->exec_context.std_output = u->manager->default_std_output; | |
158 | m->exec_context.std_error = u->manager->default_std_error; | |
159 | ||
3e5235b0 LP |
160 | m->directory_mode = 0755; |
161 | ||
f00929ad DJL |
162 | /* We need to make sure that /usr/bin/mount is always called |
163 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
164 | * side doesn't send us another mount request while we are |
165 | * already trying to comply its last one. */ | |
74922904 | 166 | m->exec_context.same_pgrp = true; |
8d567588 | 167 | |
a16e1123 | 168 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 169 | |
5bcb0f2b | 170 | u->ignore_on_isolate = true; |
8d567588 LP |
171 | } |
172 | ||
36c16a7c | 173 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
174 | int r; |
175 | ||
176 | assert(m); | |
177 | ||
718db961 | 178 | if (m->timer_event_source) { |
36c16a7c | 179 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
180 | if (r < 0) |
181 | return r; | |
182 | ||
183 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
184 | } | |
185 | ||
36c16a7c LP |
186 | if (usec == USEC_INFINITY) |
187 | return 0; | |
188 | ||
7dfbe2e3 | 189 | r = sd_event_add_time( |
6a0f1f6d LP |
190 | UNIT(m)->manager->event, |
191 | &m->timer_event_source, | |
192 | CLOCK_MONOTONIC, | |
36c16a7c | 193 | usec, 0, |
6a0f1f6d | 194 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
195 | if (r < 0) |
196 | return r; | |
197 | ||
198 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
199 | ||
200 | return 0; | |
718db961 LP |
201 | } |
202 | ||
a16e1123 | 203 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
204 | assert(m); |
205 | ||
206 | if (m->control_pid <= 0) | |
207 | return; | |
208 | ||
209 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
210 | m->control_pid = 0; | |
211 | } | |
212 | ||
e537352b LP |
213 | static void mount_parameters_done(MountParameters *p) { |
214 | assert(p); | |
215 | ||
216 | free(p->what); | |
217 | free(p->options); | |
218 | free(p->fstype); | |
219 | ||
220 | p->what = p->options = p->fstype = NULL; | |
221 | } | |
222 | ||
87f0e418 | 223 | static void mount_done(Unit *u) { |
ef734fd6 | 224 | Mount *m = MOUNT(u); |
034c6ed7 | 225 | |
ef734fd6 | 226 | assert(m); |
034c6ed7 | 227 | |
a1e58e8e | 228 | m->where = mfree(m->where); |
f50e0a01 | 229 | |
e537352b LP |
230 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
231 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 232 | |
e8a565cb | 233 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
234 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
235 | m->control_command = NULL; | |
f50e0a01 | 236 | |
29206d46 LP |
237 | dynamic_creds_unref(&m->dynamic_creds); |
238 | ||
a16e1123 | 239 | mount_unwatch_control_pid(m); |
f50e0a01 | 240 | |
718db961 | 241 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
242 | } |
243 | ||
44a6b1b6 | 244 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
245 | assert(m); |
246 | ||
247 | if (m->from_fragment) | |
248 | return &m->parameters_fragment; | |
cb39ed3f LP |
249 | |
250 | return NULL; | |
251 | } | |
252 | ||
44a6b1b6 | 253 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
254 | assert(m); |
255 | ||
256 | if (m->from_proc_self_mountinfo) | |
257 | return &m->parameters_proc_self_mountinfo; | |
258 | ||
6b1dc2bd | 259 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
260 | } |
261 | ||
eef85c4a | 262 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 263 | MountParameters *pm; |
ac155bb8 | 264 | Unit *other; |
a57f7e2c LP |
265 | Iterator i; |
266 | Set *s; | |
b08d03ff LP |
267 | int r; |
268 | ||
6e2ef85b | 269 | assert(m); |
b08d03ff | 270 | |
a57f7e2c | 271 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
272 | _cleanup_free_ char *parent = NULL; |
273 | ||
274 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
275 | |
276 | parent = dirname_malloc(m->where); | |
277 | if (!parent) | |
278 | return -ENOMEM; | |
01f78473 | 279 | |
eef85c4a | 280 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 281 | if (r < 0) |
01f78473 | 282 | return r; |
4f0eedb7 | 283 | } |
01f78473 | 284 | |
eef85c4a LP |
285 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
286 | * or a loop mount) to be available. */ | |
a57f7e2c | 287 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
288 | if (pm && pm->what && |
289 | path_is_absolute(pm->what) && | |
d3bd0986 | 290 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 291 | |
eef85c4a | 292 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 293 | if (r < 0) |
6e2ef85b | 294 | return r; |
4f0eedb7 | 295 | } |
b08d03ff | 296 | |
eef85c4a | 297 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
298 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
299 | SET_FOREACH(other, s, i) { | |
b08d03ff | 300 | |
a57f7e2c LP |
301 | if (other->load_state != UNIT_LOADED) |
302 | continue; | |
b08d03ff | 303 | |
a57f7e2c LP |
304 | if (other == UNIT(m)) |
305 | continue; | |
b08d03ff | 306 | |
eef85c4a | 307 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 308 | if (r < 0) |
6e2ef85b | 309 | return r; |
b08d03ff | 310 | |
a57f7e2c LP |
311 | if (UNIT(m)->fragment_path) { |
312 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 313 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
314 | if (r < 0) |
315 | return r; | |
316 | } | |
7c8fa05c LP |
317 | } |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
eef85c4a | 322 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 323 | bool device_wants_mount = false; |
eef85c4a LP |
324 | UnitDependencyMask mask; |
325 | MountParameters *p; | |
ebc8968b | 326 | UnitDependency dep; |
9fff8a1f | 327 | int r; |
173a8d04 LP |
328 | |
329 | assert(m); | |
330 | ||
06e97888 | 331 | p = get_mount_parameters(m); |
6b1dc2bd | 332 | if (!p) |
173a8d04 LP |
333 | return 0; |
334 | ||
9fff8a1f | 335 | if (!p->what) |
173a8d04 | 336 | return 0; |
5c78d8e2 | 337 | |
dd144c63 LP |
338 | if (mount_is_bind(p)) |
339 | return 0; | |
340 | ||
341 | if (!is_device_path(p->what)) | |
342 | return 0; | |
343 | ||
7ba2711d LP |
344 | /* /dev/root is a really weird thing, it's not a real device, |
345 | * but just a path the kernel exports for the root file system | |
346 | * specified on the kernel command line. Ignore it here. */ | |
347 | if (path_equal(p->what, "/dev/root")) | |
348 | return 0; | |
349 | ||
dd144c63 LP |
350 | if (path_equal(m->where, "/")) |
351 | return 0; | |
352 | ||
463d0d15 | 353 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
354 | device_wants_mount = true; |
355 | ||
ebc8968b FB |
356 | /* Mount units from /proc/self/mountinfo are not bound to devices |
357 | * by default since they're subject to races when devices are | |
358 | * unplugged. But the user can still force this dep with an | |
359 | * appropriate option (or udev property) so the mount units are | |
360 | * automatically stopped when the device disappears suddenly. */ | |
361 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
362 | ||
eef85c4a LP |
363 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
364 | ||
365 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
366 | if (r < 0) |
367 | return r; | |
9fff8a1f | 368 | |
9fff8a1f | 369 | return 0; |
173a8d04 LP |
370 | } |
371 | ||
eef85c4a LP |
372 | static int mount_add_quota_dependencies(Mount *m) { |
373 | UnitDependencyMask mask; | |
6b1dc2bd | 374 | MountParameters *p; |
eef85c4a | 375 | int r; |
6b1dc2bd LP |
376 | |
377 | assert(m); | |
378 | ||
463d0d15 | 379 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
380 | return 0; |
381 | ||
382 | p = get_mount_parameters_fragment(m); | |
383 | if (!p) | |
384 | return 0; | |
385 | ||
386 | if (!needs_quota(p)) | |
387 | return 0; | |
388 | ||
eef85c4a LP |
389 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
390 | ||
391 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true, mask); | |
6b1dc2bd LP |
392 | if (r < 0) |
393 | return r; | |
394 | ||
eef85c4a | 395 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true, mask); |
6b1dc2bd LP |
396 | if (r < 0) |
397 | return r; | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
ad2706db | 402 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 403 | MountParameters *p; |
ad2706db | 404 | assert(m); |
88ac30a1 | 405 | |
ad2706db LP |
406 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
407 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
408 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
409 | ||
410 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
411 | return true; | |
412 | ||
413 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
414 | "/", | |
415 | "/usr")) | |
416 | return true; | |
88ac30a1 | 417 | |
ad2706db LP |
418 | if (PATH_STARTSWITH_SET(m->where, |
419 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
420 | "/proc", /* All of this is API VFS */ | |
421 | "/sys", /* … dito … */ | |
422 | "/dev")) /* … dito … */ | |
423 | return true; | |
424 | ||
425 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 426 | p = get_mount_parameters(m); |
ad2706db LP |
427 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
428 | return true; | |
88ac30a1 | 429 | |
ad2706db | 430 | return false; |
88ac30a1 TG |
431 | } |
432 | ||
2edd4434 | 433 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
434 | UnitDependencyMask mask; |
435 | int r; | |
9ddc4a26 | 436 | MountParameters *p; |
ea0ec5ce | 437 | const char *after; |
2edd4434 LP |
438 | |
439 | assert(m); | |
440 | ||
4c9ea260 LP |
441 | if (!UNIT(m)->default_dependencies) |
442 | return 0; | |
443 | ||
ad2706db LP |
444 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
445 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
446 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
447 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 448 | return 0; |
2edd4434 | 449 | |
874d3404 LP |
450 | p = get_mount_parameters(m); |
451 | if (!p) | |
6b1dc2bd LP |
452 | return 0; |
453 | ||
eef85c4a LP |
454 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
455 | ||
e8d2f6cd | 456 | if (mount_is_network(p)) { |
ea0ec5ce LP |
457 | /* We order ourselves after network.target. This is |
458 | * primarily useful at shutdown: services that take | |
459 | * down the network should order themselves before | |
460 | * network.target, so that they are shut down only | |
461 | * after this mount unit is stopped. */ | |
6b1dc2bd | 462 | |
eef85c4a | 463 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, NULL, true, mask); |
a63a5c46 LP |
464 | if (r < 0) |
465 | return r; | |
a63a5c46 | 466 | |
ea0ec5ce LP |
467 | /* We pull in network-online.target, and order |
468 | * ourselves after it. This is useful at start-up to | |
469 | * actively pull in tools that want to be started | |
470 | * before we start mounting network file systems, and | |
471 | * whose purpose it is to delay this until the network | |
472 | * is "up". */ | |
473 | ||
eef85c4a | 474 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, NULL, true, mask); |
e8d2f6cd LP |
475 | if (r < 0) |
476 | return r; | |
ea0ec5ce LP |
477 | |
478 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
479 | } else | |
480 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
481 | ||
eef85c4a | 482 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true, mask); |
ea0ec5ce LP |
483 | if (r < 0) |
484 | return r; | |
e8d2f6cd | 485 | |
eef85c4a | 486 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, mask); |
ad2706db LP |
487 | if (r < 0) |
488 | return r; | |
2edd4434 | 489 | |
3e3852b3 | 490 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 491 | if (streq_ptr(p->fstype, "tmpfs")) { |
3e3852b3 LP |
492 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, NULL, true, mask); |
493 | if (r < 0) | |
494 | return r; | |
495 | } | |
496 | ||
2edd4434 LP |
497 | return 0; |
498 | } | |
499 | ||
8d567588 | 500 | static int mount_verify(Mount *m) { |
a57f7e2c | 501 | _cleanup_free_ char *e = NULL; |
b294b79f | 502 | MountParameters *p; |
7410616c | 503 | int r; |
a57f7e2c | 504 | |
8d567588 LP |
505 | assert(m); |
506 | ||
1124fe6f | 507 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
508 | return 0; |
509 | ||
1df96fcb | 510 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
511 | return -ENOENT; |
512 | ||
7410616c LP |
513 | r = unit_name_from_path(m->where, ".mount", &e); |
514 | if (r < 0) | |
f2341e0a | 515 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 516 | |
7410616c | 517 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 518 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
519 | return -EINVAL; |
520 | } | |
521 | ||
33ff02c9 | 522 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 523 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
33ff02c9 LP |
524 | return -EINVAL; |
525 | } | |
526 | ||
b294b79f MO |
527 | p = get_mount_parameters_fragment(m); |
528 | if (p && !p->what) { | |
f2341e0a | 529 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
4e85aff4 LP |
530 | return -EBADMSG; |
531 | } | |
532 | ||
4819ff03 | 533 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 534 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
4d0e5dbd LP |
535 | return -EINVAL; |
536 | } | |
537 | ||
8d567588 LP |
538 | return 0; |
539 | } | |
540 | ||
1a4ac875 MS |
541 | static int mount_add_extras(Mount *m) { |
542 | Unit *u = UNIT(m); | |
e537352b LP |
543 | int r; |
544 | ||
e821075a LP |
545 | assert(m); |
546 | ||
547 | if (u->fragment_path) | |
1a4ac875 | 548 | m->from_fragment = true; |
e537352b | 549 | |
1a4ac875 | 550 | if (!m->where) { |
7410616c LP |
551 | r = unit_name_to_path(u->id, &m->where); |
552 | if (r < 0) | |
553 | return r; | |
1a4ac875 | 554 | } |
a16e1123 | 555 | |
1a4ac875 | 556 | path_kill_slashes(m->where); |
e537352b | 557 | |
e821075a | 558 | if (!u->description) { |
1a4ac875 MS |
559 | r = unit_set_description(u, m->where); |
560 | if (r < 0) | |
173a8d04 | 561 | return r; |
1a4ac875 | 562 | } |
6e2ef85b | 563 | |
eef85c4a | 564 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
565 | if (r < 0) |
566 | return r; | |
6e2ef85b | 567 | |
eef85c4a | 568 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
569 | if (r < 0) |
570 | return r; | |
6e2ef85b | 571 | |
eef85c4a | 572 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
573 | if (r < 0) |
574 | return r; | |
e537352b | 575 | |
598459ce LP |
576 | r = unit_patch_contexts(u); |
577 | if (r < 0) | |
578 | return r; | |
4e67ddd6 | 579 | |
598459ce | 580 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
581 | if (r < 0) |
582 | return r; | |
583 | ||
d79200e2 | 584 | r = unit_set_default_slice(u); |
1a4ac875 MS |
585 | if (r < 0) |
586 | return r; | |
587 | ||
4c9ea260 LP |
588 | r = mount_add_default_dependencies(m); |
589 | if (r < 0) | |
590 | return r; | |
598459ce | 591 | |
1a4ac875 MS |
592 | return 0; |
593 | } | |
594 | ||
11222d0f LP |
595 | static int mount_load_root_mount(Unit *u) { |
596 | assert(u); | |
597 | ||
598 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
599 | return 0; | |
600 | ||
601 | u->perpetual = true; | |
602 | u->default_dependencies = false; | |
603 | ||
604 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
605 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
606 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
607 | ||
608 | if (!u->description) | |
609 | u->description = strdup("Root Mount"); | |
610 | ||
611 | return 1; | |
612 | } | |
613 | ||
1a4ac875 MS |
614 | static int mount_load(Unit *u) { |
615 | Mount *m = MOUNT(u); | |
616 | int r; | |
617 | ||
618 | assert(u); | |
619 | assert(u->load_state == UNIT_STUB); | |
620 | ||
11222d0f LP |
621 | r = mount_load_root_mount(u); |
622 | if (r < 0) | |
623 | return r; | |
624 | ||
625 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
626 | r = unit_load_fragment_and_dropin_optional(u); |
627 | else | |
628 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
629 | if (r < 0) |
630 | return r; | |
155da457 | 631 | |
1a4ac875 MS |
632 | /* This is a new unit? Then let's add in some extras */ |
633 | if (u->load_state == UNIT_LOADED) { | |
634 | r = mount_add_extras(m); | |
635 | if (r < 0) | |
636 | return r; | |
e537352b LP |
637 | } |
638 | ||
8d567588 | 639 | return mount_verify(m); |
e537352b LP |
640 | } |
641 | ||
642 | static void mount_set_state(Mount *m, MountState state) { | |
643 | MountState old_state; | |
644 | assert(m); | |
645 | ||
646 | old_state = m->state; | |
647 | m->state = state; | |
648 | ||
c634f3d2 | 649 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 650 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 651 | mount_unwatch_control_pid(m); |
e537352b | 652 | m->control_command = NULL; |
a16e1123 | 653 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
654 | } |
655 | ||
656 | if (state != old_state) | |
f2341e0a | 657 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 658 | |
9d2f5178 | 659 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
660 | } |
661 | ||
be847e82 | 662 | static int mount_coldplug(Unit *u) { |
e537352b | 663 | Mount *m = MOUNT(u); |
a16e1123 LP |
664 | MountState new_state = MOUNT_DEAD; |
665 | int r; | |
e537352b LP |
666 | |
667 | assert(m); | |
668 | assert(m->state == MOUNT_DEAD); | |
669 | ||
a16e1123 LP |
670 | if (m->deserialized_state != m->state) |
671 | new_state = m->deserialized_state; | |
672 | else if (m->from_proc_self_mountinfo) | |
673 | new_state = MOUNT_MOUNTED; | |
e537352b | 674 | |
5bcb0f2b LP |
675 | if (new_state == m->state) |
676 | return 0; | |
e537352b | 677 | |
c386f588 LP |
678 | if (m->control_pid > 0 && |
679 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 680 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
681 | |
682 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
683 | if (r < 0) | |
684 | return r; | |
e537352b | 685 | |
36c16a7c | 686 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
687 | if (r < 0) |
688 | return r; | |
a16e1123 | 689 | } |
e537352b | 690 | |
e8a565cb | 691 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 692 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
693 | (void) unit_setup_exec_runtime(u); |
694 | } | |
29206d46 | 695 | |
5bcb0f2b | 696 | mount_set_state(m, new_state); |
e537352b | 697 | return 0; |
e537352b LP |
698 | } |
699 | ||
700 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 701 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
702 | Mount *m = MOUNT(u); |
703 | MountParameters *p; | |
704 | ||
705 | assert(m); | |
706 | assert(f); | |
707 | ||
cb39ed3f | 708 | p = get_mount_parameters(m); |
e537352b LP |
709 | |
710 | fprintf(f, | |
711 | "%sMount State: %s\n" | |
81a5c6d0 | 712 | "%sResult: %s\n" |
e537352b LP |
713 | "%sWhere: %s\n" |
714 | "%sWhat: %s\n" | |
715 | "%sFile System Type: %s\n" | |
716 | "%sOptions: %s\n" | |
e537352b LP |
717 | "%sFrom /proc/self/mountinfo: %s\n" |
718 | "%sFrom fragment: %s\n" | |
ad2706db | 719 | "%sExtrinsic: %s\n" |
e520950a | 720 | "%sDirectoryMode: %04o\n" |
49915de2 | 721 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 722 | "%sLazyUnmount: %s\n" |
91899792 YW |
723 | "%sForceUnmount: %s\n" |
724 | "%sTimoutSec: %s\n", | |
a16e1123 | 725 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 726 | prefix, mount_result_to_string(m->result), |
e537352b | 727 | prefix, m->where, |
1e4fc9b1 HH |
728 | prefix, p ? strna(p->what) : "n/a", |
729 | prefix, p ? strna(p->fstype) : "n/a", | |
730 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
731 | prefix, yes_no(m->from_proc_self_mountinfo), |
732 | prefix, yes_no(m->from_fragment), | |
ad2706db | 733 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 734 | prefix, m->directory_mode, |
49915de2 | 735 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 736 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
737 | prefix, yes_no(m->force_unmount), |
738 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
739 | |
740 | if (m->control_pid > 0) | |
741 | fprintf(f, | |
ccd06097 ZJS |
742 | "%sControl PID: "PID_FMT"\n", |
743 | prefix, m->control_pid); | |
e537352b LP |
744 | |
745 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 746 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 747 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
748 | } |
749 | ||
a16e1123 | 750 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 751 | |
9fa95f85 | 752 | ExecParameters exec_params = { |
1703fa41 | 753 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
754 | .stdin_fd = -1, |
755 | .stdout_fd = -1, | |
756 | .stderr_fd = -1, | |
9fa95f85 | 757 | }; |
3c7416b6 LP |
758 | pid_t pid; |
759 | int r; | |
a16e1123 LP |
760 | |
761 | assert(m); | |
762 | assert(c); | |
763 | assert(_pid); | |
764 | ||
3c7416b6 | 765 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
766 | if (r < 0) |
767 | return r; | |
768 | ||
36c16a7c | 769 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 770 | if (r < 0) |
36c16a7c | 771 | return r; |
a16e1123 | 772 | |
f0d47797 | 773 | unit_set_exec_params(UNIT(m), &exec_params); |
9fa95f85 | 774 | |
f2341e0a LP |
775 | r = exec_spawn(UNIT(m), |
776 | c, | |
4ad49000 | 777 | &m->exec_context, |
9fa95f85 | 778 | &exec_params, |
613b411c | 779 | m->exec_runtime, |
29206d46 | 780 | &m->dynamic_creds, |
4ad49000 LP |
781 | &pid); |
782 | if (r < 0) | |
36c16a7c | 783 | return r; |
a16e1123 | 784 | |
4ad49000 LP |
785 | r = unit_watch_pid(UNIT(m), pid); |
786 | if (r < 0) | |
a16e1123 | 787 | /* FIXME: we need to do something here */ |
36c16a7c | 788 | return r; |
a16e1123 LP |
789 | |
790 | *_pid = pid; | |
791 | ||
792 | return 0; | |
a16e1123 LP |
793 | } |
794 | ||
9d2f5178 | 795 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
796 | assert(m); |
797 | ||
a0fef983 | 798 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 799 | m->result = f; |
e537352b | 800 | |
ed77d407 LP |
801 | if (m->result != MOUNT_SUCCESS) |
802 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
803 | ||
29206d46 LP |
804 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
805 | ||
e8a565cb | 806 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 807 | |
3536f49e | 808 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 809 | |
00d9ef85 LP |
810 | unit_unref_uid_gid(UNIT(m), true); |
811 | ||
29206d46 | 812 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
813 | } |
814 | ||
9d2f5178 | 815 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
816 | assert(m); |
817 | ||
a0fef983 | 818 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 819 | m->result = f; |
80876c20 LP |
820 | |
821 | mount_set_state(m, MOUNT_MOUNTED); | |
822 | } | |
823 | ||
22af0e58 LP |
824 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
825 | assert(m); | |
826 | ||
827 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
828 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
829 | * ultimately we just mirror the kernel's internal state on this. */ | |
830 | ||
831 | if (m->from_proc_self_mountinfo) | |
832 | mount_enter_mounted(m, f); | |
833 | else | |
834 | mount_enter_dead(m, f); | |
835 | } | |
836 | ||
837 | static int state_to_kill_operation(MountState state) { | |
838 | switch (state) { | |
839 | ||
840 | case MOUNT_REMOUNTING_SIGTERM: | |
841 | case MOUNT_UNMOUNTING_SIGTERM: | |
842 | return KILL_TERMINATE; | |
843 | ||
844 | case MOUNT_REMOUNTING_SIGKILL: | |
845 | case MOUNT_UNMOUNTING_SIGKILL: | |
846 | return KILL_KILL; | |
847 | ||
848 | default: | |
849 | return _KILL_OPERATION_INVALID; | |
850 | } | |
851 | } | |
852 | ||
9d2f5178 | 853 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
854 | int r; |
855 | ||
856 | assert(m); | |
857 | ||
a0fef983 | 858 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 859 | m->result = f; |
e537352b | 860 | |
cd2086fe LP |
861 | r = unit_kill_context( |
862 | UNIT(m), | |
863 | &m->kill_context, | |
22af0e58 | 864 | state_to_kill_operation(state), |
cd2086fe LP |
865 | -1, |
866 | m->control_pid, | |
867 | false); | |
868 | if (r < 0) | |
869 | goto fail; | |
e537352b | 870 | |
cd2086fe | 871 | if (r > 0) { |
36c16a7c | 872 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 873 | if (r < 0) |
80876c20 | 874 | goto fail; |
e537352b | 875 | |
80876c20 | 876 | mount_set_state(m, state); |
22af0e58 | 877 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 878 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 879 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 880 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 881 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 882 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 883 | else |
22af0e58 | 884 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
885 | |
886 | return; | |
887 | ||
888 | fail: | |
f2341e0a | 889 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 890 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
891 | } |
892 | ||
9d2f5178 | 893 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
894 | int r; |
895 | ||
896 | assert(m); | |
897 | ||
7d54a03a LP |
898 | /* Start counting our attempts */ |
899 | if (!IN_SET(m->state, | |
900 | MOUNT_UNMOUNTING, | |
901 | MOUNT_UNMOUNTING_SIGTERM, | |
902 | MOUNT_UNMOUNTING_SIGKILL)) | |
903 | m->n_retry_umount = 0; | |
904 | ||
a16e1123 LP |
905 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
906 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 907 | |
83897d54 | 908 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
909 | if (r >= 0 && m->lazy_unmount) |
910 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
911 | if (r >= 0 && m->force_unmount) |
912 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 913 | if (r < 0) |
e537352b LP |
914 | goto fail; |
915 | ||
a16e1123 | 916 | mount_unwatch_control_pid(m); |
5e94833f | 917 | |
7d54a03a LP |
918 | r = mount_spawn(m, m->control_command, &m->control_pid); |
919 | if (r < 0) | |
e537352b LP |
920 | goto fail; |
921 | ||
922 | mount_set_state(m, MOUNT_UNMOUNTING); | |
923 | ||
924 | return; | |
925 | ||
926 | fail: | |
f2341e0a | 927 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 928 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
929 | } |
930 | ||
8d567588 | 931 | static void mount_enter_mounting(Mount *m) { |
e537352b | 932 | int r; |
cb39ed3f | 933 | MountParameters *p; |
e537352b LP |
934 | |
935 | assert(m); | |
936 | ||
25cd4964 | 937 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
938 | if (r < 0) |
939 | goto fail; | |
940 | ||
941 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 942 | |
f2341e0a | 943 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 944 | |
a4634b21 LP |
945 | unit_warn_leftover_processes(UNIT(m)); |
946 | ||
947 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
948 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
949 | ||
cb39ed3f | 950 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 951 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 952 | if (p && mount_is_bind(p)) |
f2341e0a | 953 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 954 | |
b294b79f | 955 | if (p) { |
17a1c597 ZJS |
956 | _cleanup_free_ char *opts = NULL; |
957 | ||
b294b79f | 958 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
959 | if (r < 0) |
960 | goto fail; | |
961 | ||
b294b79f | 962 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
963 | if (r >= 0 && m->sloppy_options) |
964 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
965 | if (r >= 0 && p->fstype) |
966 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 967 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 968 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 969 | } else |
e537352b | 970 | r = -ENOENT; |
e537352b LP |
971 | if (r < 0) |
972 | goto fail; | |
973 | ||
a16e1123 | 974 | mount_unwatch_control_pid(m); |
5e94833f | 975 | |
257f1d8e LP |
976 | r = mount_spawn(m, m->control_command, &m->control_pid); |
977 | if (r < 0) | |
e537352b LP |
978 | goto fail; |
979 | ||
980 | mount_set_state(m, MOUNT_MOUNTING); | |
981 | ||
982 | return; | |
983 | ||
984 | fail: | |
f2341e0a | 985 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 986 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
987 | } |
988 | ||
850b7410 LP |
989 | static void mount_set_reload_result(Mount *m, MountResult result) { |
990 | assert(m); | |
991 | ||
992 | /* Only store the first error we encounter */ | |
993 | if (m->reload_result != MOUNT_SUCCESS) | |
994 | return; | |
995 | ||
996 | m->reload_result = result; | |
997 | } | |
998 | ||
9d2f5178 | 999 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1000 | int r; |
b294b79f | 1001 | MountParameters *p; |
e537352b LP |
1002 | |
1003 | assert(m); | |
1004 | ||
850b7410 LP |
1005 | /* Reset reload result when we are about to start a new remount operation */ |
1006 | m->reload_result = MOUNT_SUCCESS; | |
1007 | ||
a16e1123 LP |
1008 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1009 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1010 | |
b294b79f MO |
1011 | p = get_mount_parameters_fragment(m); |
1012 | if (p) { | |
e537352b LP |
1013 | const char *o; |
1014 | ||
b294b79f MO |
1015 | if (p->options) |
1016 | o = strjoina("remount,", p->options); | |
718db961 | 1017 | else |
e537352b LP |
1018 | o = "remount"; |
1019 | ||
f00929ad | 1020 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1021 | p->what, m->where, |
e86b3761 | 1022 | "-o", o, NULL); |
e86b3761 ZJS |
1023 | if (r >= 0 && m->sloppy_options) |
1024 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1025 | if (r >= 0 && p->fstype) |
1026 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1027 | } else |
e537352b | 1028 | r = -ENOENT; |
60b912f6 | 1029 | if (r < 0) |
e537352b | 1030 | goto fail; |
e537352b | 1031 | |
a16e1123 | 1032 | mount_unwatch_control_pid(m); |
5e94833f | 1033 | |
718db961 LP |
1034 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1035 | if (r < 0) | |
e537352b LP |
1036 | goto fail; |
1037 | ||
1038 | mount_set_state(m, MOUNT_REMOUNTING); | |
1039 | ||
1040 | return; | |
1041 | ||
1042 | fail: | |
f2341e0a | 1043 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1044 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1045 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1046 | } |
1047 | ||
1048 | static int mount_start(Unit *u) { | |
1049 | Mount *m = MOUNT(u); | |
07299350 | 1050 | int r; |
e537352b LP |
1051 | |
1052 | assert(m); | |
1053 | ||
1054 | /* We cannot fulfill this request right now, try again later | |
1055 | * please! */ | |
f2aed307 LP |
1056 | if (IN_SET(m->state, |
1057 | MOUNT_UNMOUNTING, | |
1058 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1059 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1060 | return -EAGAIN; |
1061 | ||
1062 | /* Already on it! */ | |
60b912f6 | 1063 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1064 | return 0; |
1065 | ||
f2aed307 | 1066 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1067 | |
07299350 LP |
1068 | r = unit_start_limit_test(u); |
1069 | if (r < 0) { | |
1070 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1071 | return r; | |
1072 | } | |
1073 | ||
4b58153d LP |
1074 | r = unit_acquire_invocation_id(u); |
1075 | if (r < 0) | |
1076 | return r; | |
1077 | ||
9d2f5178 LP |
1078 | m->result = MOUNT_SUCCESS; |
1079 | m->reload_result = MOUNT_SUCCESS; | |
3c7416b6 LP |
1080 | |
1081 | u->reset_accounting = true; | |
9d2f5178 | 1082 | |
8d567588 | 1083 | mount_enter_mounting(m); |
82a2b6bb | 1084 | return 1; |
e537352b LP |
1085 | } |
1086 | ||
1087 | static int mount_stop(Unit *u) { | |
1088 | Mount *m = MOUNT(u); | |
1089 | ||
1090 | assert(m); | |
1091 | ||
22af0e58 LP |
1092 | switch (m->state) { |
1093 | ||
1094 | case MOUNT_UNMOUNTING: | |
1095 | case MOUNT_UNMOUNTING_SIGKILL: | |
1096 | case MOUNT_UNMOUNTING_SIGTERM: | |
1097 | /* Already on it */ | |
e537352b LP |
1098 | return 0; |
1099 | ||
22af0e58 LP |
1100 | case MOUNT_MOUNTING: |
1101 | case MOUNT_MOUNTING_DONE: | |
1102 | case MOUNT_REMOUNTING: | |
1103 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1104 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1105 | return 0; | |
e537352b | 1106 | |
22af0e58 LP |
1107 | case MOUNT_REMOUNTING_SIGTERM: |
1108 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1109 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1110 | return 0; | |
1111 | ||
1112 | case MOUNT_REMOUNTING_SIGKILL: | |
1113 | /* as above */ | |
1114 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1115 | return 0; | |
1116 | ||
1117 | case MOUNT_MOUNTED: | |
1118 | mount_enter_unmounting(m); | |
1119 | return 1; | |
1120 | ||
1121 | default: | |
1122 | assert_not_reached("Unexpected state."); | |
1123 | } | |
e537352b LP |
1124 | } |
1125 | ||
1126 | static int mount_reload(Unit *u) { | |
1127 | Mount *m = MOUNT(u); | |
1128 | ||
1129 | assert(m); | |
e537352b LP |
1130 | assert(m->state == MOUNT_MOUNTED); |
1131 | ||
9d2f5178 | 1132 | mount_enter_remounting(m); |
22af0e58 | 1133 | |
2d018ae2 | 1134 | return 1; |
e537352b LP |
1135 | } |
1136 | ||
a16e1123 LP |
1137 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1138 | Mount *m = MOUNT(u); | |
1139 | ||
1140 | assert(m); | |
1141 | assert(f); | |
1142 | assert(fds); | |
1143 | ||
1144 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1145 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1146 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1147 | |
1148 | if (m->control_pid > 0) | |
ccd06097 | 1149 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1150 | |
1151 | if (m->control_command_id >= 0) | |
1152 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1158 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1159 | |
1160 | assert(u); | |
1161 | assert(key); | |
1162 | assert(value); | |
1163 | assert(fds); | |
1164 | ||
1165 | if (streq(key, "state")) { | |
1166 | MountState state; | |
1167 | ||
1168 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1169 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1170 | else |
1171 | m->deserialized_state = state; | |
9d2f5178 LP |
1172 | } else if (streq(key, "result")) { |
1173 | MountResult f; | |
a16e1123 | 1174 | |
9d2f5178 LP |
1175 | f = mount_result_from_string(value); |
1176 | if (f < 0) | |
f2341e0a | 1177 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1178 | else if (f != MOUNT_SUCCESS) |
1179 | m->result = f; | |
1180 | ||
1181 | } else if (streq(key, "reload-result")) { | |
1182 | MountResult f; | |
1183 | ||
1184 | f = mount_result_from_string(value); | |
1185 | if (f < 0) | |
f2341e0a | 1186 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1187 | else if (f != MOUNT_SUCCESS) |
1188 | m->reload_result = f; | |
a16e1123 LP |
1189 | |
1190 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1191 | pid_t pid; |
a16e1123 | 1192 | |
e364ad06 | 1193 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1194 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1195 | else |
5925dd3c | 1196 | m->control_pid = pid; |
a16e1123 LP |
1197 | } else if (streq(key, "control-command")) { |
1198 | MountExecCommand id; | |
1199 | ||
f2341e0a LP |
1200 | id = mount_exec_command_from_string(value); |
1201 | if (id < 0) | |
1202 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1203 | else { |
1204 | m->control_command_id = id; | |
1205 | m->control_command = m->exec_command + id; | |
1206 | } | |
a16e1123 | 1207 | } else |
f2341e0a | 1208 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1209 | |
1210 | return 0; | |
1211 | } | |
1212 | ||
44a6b1b6 | 1213 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1214 | assert(u); |
1215 | ||
1216 | return state_translation_table[MOUNT(u)->state]; | |
1217 | } | |
1218 | ||
44a6b1b6 | 1219 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1220 | assert(u); |
1221 | ||
a16e1123 | 1222 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1223 | } |
1224 | ||
f2f725e5 | 1225 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1226 | Mount *m = MOUNT(u); |
1227 | ||
1228 | assert(m); | |
1229 | ||
f2f725e5 ZJS |
1230 | if (m->from_proc_self_mountinfo) |
1231 | return false; | |
1232 | ||
1233 | return true; | |
701cc384 LP |
1234 | } |
1235 | ||
e537352b LP |
1236 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1237 | Mount *m = MOUNT(u); | |
9d2f5178 | 1238 | MountResult f; |
e537352b LP |
1239 | |
1240 | assert(m); | |
1241 | assert(pid >= 0); | |
1242 | ||
8c47c732 LP |
1243 | if (pid != m->control_pid) |
1244 | return; | |
e537352b | 1245 | |
e537352b LP |
1246 | m->control_pid = 0; |
1247 | ||
1f0958f6 | 1248 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1249 | f = MOUNT_SUCCESS; |
1250 | else if (code == CLD_EXITED) | |
1251 | f = MOUNT_FAILURE_EXIT_CODE; | |
1252 | else if (code == CLD_KILLED) | |
1253 | f = MOUNT_FAILURE_SIGNAL; | |
1254 | else if (code == CLD_DUMPED) | |
1255 | f = MOUNT_FAILURE_CORE_DUMP; | |
1256 | else | |
1257 | assert_not_reached("Unknown code"); | |
1258 | ||
850b7410 LP |
1259 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1260 | mount_set_reload_result(m, f); | |
1261 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1262 | m->result = f; |
8c47c732 | 1263 | |
a16e1123 | 1264 | if (m->control_command) { |
6ea832a2 | 1265 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1266 | |
a16e1123 LP |
1267 | m->control_command = NULL; |
1268 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1269 | } | |
1270 | ||
f2341e0a LP |
1271 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1272 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1273 | |
006aabbd AJ |
1274 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1275 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1276 | |
1277 | switch (m->state) { | |
1278 | ||
1279 | case MOUNT_MOUNTING: | |
006aabbd | 1280 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1281 | |
006aabbd AJ |
1282 | if (f == MOUNT_SUCCESS) { |
1283 | /* Either /bin/mount has an unexpected definition of success, | |
1284 | * or someone raced us and we lost. */ | |
1285 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1286 | f = MOUNT_FAILURE_PROTOCOL; | |
1287 | } | |
1288 | mount_enter_dead(m, f); | |
1289 | break; | |
1290 | ||
1291 | case MOUNT_MOUNTING_DONE: | |
1292 | mount_enter_mounted(m, f); | |
e537352b LP |
1293 | break; |
1294 | ||
e2f3b44c | 1295 | case MOUNT_REMOUNTING: |
e2f3b44c | 1296 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1297 | case MOUNT_REMOUNTING_SIGKILL: |
1298 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1299 | break; |
1300 | ||
e537352b | 1301 | case MOUNT_UNMOUNTING: |
e537352b | 1302 | |
3cc96856 | 1303 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1304 | |
1305 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1306 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1307 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1308 | |
1309 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1310 | log_unit_debug(u, "Mount still present, trying again."); | |
1311 | m->n_retry_umount++; | |
1312 | mount_enter_unmounting(m); | |
1313 | } else { | |
006aabbd | 1314 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1315 | mount_enter_mounted(m, f); |
1316 | } | |
1317 | } else | |
3cc96856 | 1318 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1319 | |
e537352b | 1320 | break; |
57018361 AJ |
1321 | |
1322 | case MOUNT_UNMOUNTING_SIGKILL: | |
1323 | case MOUNT_UNMOUNTING_SIGTERM: | |
1324 | mount_enter_dead_or_mounted(m, f); | |
1325 | break; | |
e537352b LP |
1326 | |
1327 | default: | |
1328 | assert_not_reached("Uh, control process died at wrong time."); | |
1329 | } | |
c4e2ceae LP |
1330 | |
1331 | /* Notify clients about changed exit status */ | |
1332 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1333 | } |
1334 | ||
718db961 LP |
1335 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1336 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1337 | |
1338 | assert(m); | |
718db961 | 1339 | assert(m->timer_event_source == source); |
e537352b LP |
1340 | |
1341 | switch (m->state) { | |
1342 | ||
1343 | case MOUNT_MOUNTING: | |
1344 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1345 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1346 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1347 | break; |
1348 | ||
1349 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1350 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1351 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1352 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1353 | break; |
1354 | ||
22af0e58 LP |
1355 | case MOUNT_REMOUNTING_SIGTERM: |
1356 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1357 | |
4819ff03 | 1358 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1359 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1360 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1361 | } else { |
22af0e58 LP |
1362 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1363 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1364 | } |
e537352b LP |
1365 | break; |
1366 | ||
22af0e58 LP |
1367 | case MOUNT_REMOUNTING_SIGKILL: |
1368 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1369 | |
22af0e58 LP |
1370 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1371 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1372 | break; | |
1373 | ||
1374 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1375 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1376 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1377 | break; |
1378 | ||
1379 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1380 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1381 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1382 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1383 | } else { |
22af0e58 LP |
1384 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1385 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1386 | } |
e537352b LP |
1387 | break; |
1388 | ||
e537352b | 1389 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1390 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1391 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1392 | break; |
1393 | ||
1394 | default: | |
1395 | assert_not_reached("Timeout at wrong time."); | |
1396 | } | |
718db961 LP |
1397 | |
1398 | return 0; | |
e537352b LP |
1399 | } |
1400 | ||
03b8cfed FB |
1401 | typedef struct { |
1402 | bool is_mounted; | |
1403 | bool just_mounted; | |
1404 | bool just_changed; | |
1405 | } MountSetupFlags; | |
1406 | ||
1407 | static int mount_setup_new_unit( | |
1408 | Unit *u, | |
1409 | const char *what, | |
1410 | const char *where, | |
1411 | const char *options, | |
1412 | const char *fstype, | |
1413 | MountSetupFlags *flags) { | |
1414 | ||
1415 | MountParameters *p; | |
1416 | ||
1417 | assert(u); | |
1418 | assert(flags); | |
1419 | ||
1420 | u->source_path = strdup("/proc/self/mountinfo"); | |
1421 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1422 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1423 | return -ENOMEM; |
1424 | ||
1425 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1426 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1427 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1428 | ||
1429 | p->what = strdup(what); | |
1430 | p->options = strdup(options); | |
1431 | p->fstype = strdup(fstype); | |
1432 | if (!p->what || !p->options || !p->fstype) | |
1433 | return -ENOMEM; | |
1434 | ||
1435 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1436 | const char *target; | |
1437 | int r; | |
1438 | ||
1439 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
eef85c4a | 1440 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1441 | if (r < 0) |
1442 | return r; | |
1443 | ||
eef85c4a | 1444 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1445 | if (r < 0) |
1446 | return r; | |
1447 | } | |
1448 | ||
cfcd4318 | 1449 | unit_add_to_load_queue(u); |
03b8cfed FB |
1450 | flags->is_mounted = true; |
1451 | flags->just_mounted = true; | |
1452 | flags->just_changed = true; | |
1453 | ||
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | static int mount_setup_existing_unit( | |
1458 | Unit *u, | |
1459 | const char *what, | |
1460 | const char *where, | |
1461 | const char *options, | |
1462 | const char *fstype, | |
1463 | MountSetupFlags *flags) { | |
1464 | ||
1465 | MountParameters *p; | |
1466 | bool load_extras = false; | |
1467 | int r1, r2, r3; | |
1468 | ||
1469 | assert(u); | |
1470 | assert(flags); | |
1471 | ||
1472 | if (!MOUNT(u)->where) { | |
1473 | MOUNT(u)->where = strdup(where); | |
1474 | if (!MOUNT(u)->where) | |
1475 | return -ENOMEM; | |
1476 | } | |
1477 | ||
1478 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1479 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1480 | ||
1481 | r1 = free_and_strdup(&p->what, what); | |
1482 | r2 = free_and_strdup(&p->options, options); | |
1483 | r3 = free_and_strdup(&p->fstype, fstype); | |
1484 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1485 | return -ENOMEM; | |
1486 | ||
1487 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1488 | flags->is_mounted = true; | |
65d36b49 | 1489 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1490 | |
1491 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1492 | ||
1493 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1494 | /* _netdev option may have shown up late, or on a | |
1495 | * remount. Add remote-fs dependencies, even though | |
1496 | * local-fs ones may already be there. | |
1497 | * | |
1498 | * Note: due to a current limitation (we don't track | |
1499 | * in the dependency "Set*" objects who created a | |
1500 | * dependency), we can only add deps, never lose them, | |
1501 | * until the next full daemon-reload. */ | |
eef85c4a | 1502 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1503 | load_extras = true; |
1504 | } | |
1505 | ||
1506 | if (u->load_state == UNIT_NOT_FOUND) { | |
1507 | u->load_state = UNIT_LOADED; | |
1508 | u->load_error = 0; | |
1509 | ||
1510 | /* Load in the extras later on, after we | |
1511 | * finished initialization of the unit */ | |
1512 | ||
1513 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1514 | load_extras = true; | |
1515 | flags->just_changed = true; | |
1516 | } | |
1517 | ||
1518 | if (load_extras) | |
1519 | return mount_add_extras(MOUNT(u)); | |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | ||
628c89cc | 1524 | static int mount_setup_unit( |
e537352b LP |
1525 | Manager *m, |
1526 | const char *what, | |
1527 | const char *where, | |
1528 | const char *options, | |
1529 | const char *fstype, | |
e537352b | 1530 | bool set_flags) { |
057d9ab8 | 1531 | |
03b8cfed FB |
1532 | _cleanup_free_ char *e = NULL; |
1533 | MountSetupFlags flags; | |
057d9ab8 LP |
1534 | Unit *u; |
1535 | int r; | |
b08d03ff | 1536 | |
f50e0a01 | 1537 | assert(m); |
b08d03ff LP |
1538 | assert(what); |
1539 | assert(where); | |
e537352b LP |
1540 | assert(options); |
1541 | assert(fstype); | |
1542 | ||
e537352b LP |
1543 | /* Ignore API mount points. They should never be referenced in |
1544 | * dependencies ever. */ | |
33ff02c9 | 1545 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1546 | return 0; |
b08d03ff | 1547 | |
8d567588 LP |
1548 | if (streq(fstype, "autofs")) |
1549 | return 0; | |
1550 | ||
4e85aff4 LP |
1551 | /* probably some kind of swap, ignore */ |
1552 | if (!is_path(where)) | |
b08d03ff LP |
1553 | return 0; |
1554 | ||
7410616c LP |
1555 | r = unit_name_from_path(where, ".mount", &e); |
1556 | if (r < 0) | |
1557 | return r; | |
b08d03ff | 1558 | |
7d17cfbc MS |
1559 | u = manager_get_unit(m, e); |
1560 | if (!u) { | |
03b8cfed FB |
1561 | /* First time we see this mount point meaning that it's |
1562 | * not been initiated by a mount unit but rather by the | |
1563 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1564 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1565 | if (r < 0) |
1566 | goto fail; | |
1567 | ||
03b8cfed FB |
1568 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1569 | if (r < 0) | |
1570 | unit_free(u); | |
1571 | } else | |
1572 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1573 | |
03b8cfed | 1574 | if (r < 0) |
e537352b | 1575 | goto fail; |
ff5f34d0 | 1576 | |
6b1dc2bd | 1577 | if (set_flags) { |
03b8cfed FB |
1578 | MOUNT(u)->is_mounted = flags.is_mounted; |
1579 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1580 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1581 | } |
1582 | ||
03b8cfed | 1583 | if (flags.just_changed) |
ff5f34d0 | 1584 | unit_add_to_dbus_queue(u); |
c1e1601e | 1585 | |
b08d03ff | 1586 | return 0; |
b08d03ff | 1587 | fail: |
628c89cc | 1588 | log_warning_errno(r, "Failed to set up mount unit: %m"); |
4e85aff4 | 1589 | return r; |
b08d03ff LP |
1590 | } |
1591 | ||
ef734fd6 | 1592 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1593 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1594 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1595 | int r = 0; |
b08d03ff LP |
1596 | |
1597 | assert(m); | |
1598 | ||
628c89cc | 1599 | t = mnt_new_table(); |
628c89cc | 1600 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1601 | if (!t || !i) |
628c89cc LP |
1602 | return log_oom(); |
1603 | ||
1604 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1605 | if (r < 0) |
628c89cc | 1606 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1607 | |
5cca8def ZJS |
1608 | r = 0; |
1609 | for (;;) { | |
95b862b0 | 1610 | struct libmnt_fs *fs; |
8d3ae2bd | 1611 | const char *device, *path, *options, *fstype; |
527b7a42 | 1612 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1613 | int k; |
b08d03ff | 1614 | |
628c89cc | 1615 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1616 | if (k == 1) |
1617 | break; | |
628c89cc LP |
1618 | if (k < 0) |
1619 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1620 | |
8d3ae2bd CL |
1621 | device = mnt_fs_get_source(fs); |
1622 | path = mnt_fs_get_target(fs); | |
1623 | options = mnt_fs_get_options(fs); | |
1624 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1625 | |
c0a7f8d3 DM |
1626 | if (!device || !path) |
1627 | continue; | |
1628 | ||
527b7a42 | 1629 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1630 | return log_oom(); |
1631 | ||
527b7a42 | 1632 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1633 | return log_oom(); |
b08d03ff | 1634 | |
628c89cc LP |
1635 | (void) device_found_node(m, d, true, DEVICE_FOUND_MOUNT, set_flags); |
1636 | ||
1637 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1638 | if (r == 0 && k < 0) |
60b912f6 | 1639 | r = k; |
b08d03ff LP |
1640 | } |
1641 | ||
e537352b LP |
1642 | return r; |
1643 | } | |
1644 | ||
1645 | static void mount_shutdown(Manager *m) { | |
1646 | assert(m); | |
1647 | ||
718db961 LP |
1648 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1649 | ||
d379d442 KZ |
1650 | mnt_unref_monitor(m->mount_monitor); |
1651 | m->mount_monitor = NULL; | |
b08d03ff LP |
1652 | } |
1653 | ||
7a7821c8 | 1654 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1655 | Mount *m = MOUNT(u); |
7a7821c8 | 1656 | usec_t t; |
68db7a3b ZJS |
1657 | int r; |
1658 | ||
1659 | if (!m->timer_event_source) | |
1660 | return 0; | |
1661 | ||
7a7821c8 | 1662 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1663 | if (r < 0) |
1664 | return r; | |
7a7821c8 LP |
1665 | if (t == USEC_INFINITY) |
1666 | return 0; | |
68db7a3b | 1667 | |
7a7821c8 | 1668 | *timeout = t; |
68db7a3b ZJS |
1669 | return 1; |
1670 | } | |
1671 | ||
1201cae7 | 1672 | static int synthesize_root_mount(Manager *m) { |
11222d0f LP |
1673 | Unit *u; |
1674 | int r; | |
1675 | ||
1676 | assert(m); | |
1677 | ||
1678 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1679 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1680 | ||
1681 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1682 | if (!u) { | |
a581e45a | 1683 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
1201cae7 LP |
1684 | if (r < 0) |
1685 | return log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
11222d0f LP |
1686 | } |
1687 | ||
1688 | u->perpetual = true; | |
1689 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1690 | ||
1691 | unit_add_to_load_queue(u); | |
1692 | unit_add_to_dbus_queue(u); | |
1201cae7 LP |
1693 | |
1694 | return 0; | |
11222d0f LP |
1695 | } |
1696 | ||
1697 | static bool mount_is_mounted(Mount *m) { | |
1698 | assert(m); | |
1699 | ||
1700 | return UNIT(m)->perpetual || m->is_mounted; | |
1701 | } | |
1702 | ||
ba64af90 | 1703 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1704 | int r; |
d379d442 | 1705 | |
b08d03ff LP |
1706 | assert(m); |
1707 | ||
1201cae7 LP |
1708 | r = synthesize_root_mount(m); |
1709 | if (r < 0) | |
1710 | goto fail; | |
11222d0f | 1711 | |
8d3ae2bd CL |
1712 | mnt_init_debug(0); |
1713 | ||
d379d442 KZ |
1714 | if (!m->mount_monitor) { |
1715 | int fd; | |
ef734fd6 | 1716 | |
d379d442 KZ |
1717 | m->mount_monitor = mnt_new_monitor(); |
1718 | if (!m->mount_monitor) { | |
ba64af90 | 1719 | log_oom(); |
718db961 | 1720 | goto fail; |
d379d442 | 1721 | } |
29083707 | 1722 | |
d379d442 | 1723 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1724 | if (r < 0) { |
1725 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1726 | goto fail; |
ba64af90 LP |
1727 | } |
1728 | ||
d379d442 | 1729 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1730 | if (r < 0) { |
1731 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1732 | goto fail; |
ba64af90 | 1733 | } |
90598531 | 1734 | |
d379d442 KZ |
1735 | /* mnt_unref_monitor() will close the fd */ |
1736 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1737 | if (r < 0) { |
1738 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1739 | goto fail; |
ba64af90 | 1740 | } |
befb6d54 | 1741 | |
d379d442 | 1742 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1743 | if (r < 0) { |
1744 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1745 | goto fail; |
ba64af90 | 1746 | } |
befb6d54 | 1747 | |
83231637 | 1748 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1749 | if (r < 0) { |
1750 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1751 | goto fail; |
ba64af90 | 1752 | } |
7dfbe2e3 | 1753 | |
d379d442 | 1754 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1755 | } |
1756 | ||
e62d8c39 ZJS |
1757 | r = mount_load_proc_self_mountinfo(m, false); |
1758 | if (r < 0) | |
b08d03ff LP |
1759 | goto fail; |
1760 | ||
ba64af90 | 1761 | return; |
b08d03ff LP |
1762 | |
1763 | fail: | |
1764 | mount_shutdown(m); | |
5cb5a6ff LP |
1765 | } |
1766 | ||
718db961 | 1767 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1768 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1769 | Manager *m = userdata; |
fcd8b266 LP |
1770 | const char *what; |
1771 | Iterator i; | |
595ed347 | 1772 | Unit *u; |
ef734fd6 LP |
1773 | int r; |
1774 | ||
1775 | assert(m); | |
d379d442 | 1776 | assert(revents & EPOLLIN); |
ef734fd6 | 1777 | |
d379d442 | 1778 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1779 | bool rescan = false; |
befb6d54 | 1780 | |
d379d442 KZ |
1781 | /* Drain all events and verify that the event is valid. |
1782 | * | |
1783 | * Note that libmount also monitors /run/mount mkdir if the | |
1784 | * directory does not exist yet. The mkdir may generate event | |
1785 | * which is irrelevant for us. | |
1786 | * | |
1787 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1788 | do { | |
1789 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1790 | if (r == 0) | |
1791 | rescan = true; | |
1792 | else if (r < 0) | |
1793 | return log_error_errno(r, "Failed to drain libmount events"); | |
1794 | } while (r == 0); | |
1795 | ||
1796 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1797 | if (!rescan) |
1798 | return 0; | |
1799 | } | |
ef734fd6 | 1800 | |
4f0eedb7 ZJS |
1801 | r = mount_load_proc_self_mountinfo(m, true); |
1802 | if (r < 0) { | |
e537352b | 1803 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1804 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1805 | Mount *mount = MOUNT(u); | |
e537352b LP |
1806 | |
1807 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1808 | } | |
1809 | ||
718db961 | 1810 | return 0; |
ef734fd6 LP |
1811 | } |
1812 | ||
1813 | manager_dispatch_load_queue(m); | |
1814 | ||
595ed347 MS |
1815 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1816 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1817 | |
11222d0f | 1818 | if (!mount_is_mounted(mount)) { |
e537352b | 1819 | |
394763f6 LP |
1820 | /* A mount point is not around right now. It |
1821 | * might be gone, or might never have | |
1822 | * existed. */ | |
1823 | ||
1824 | if (mount->from_proc_self_mountinfo && | |
1825 | mount->parameters_proc_self_mountinfo.what) { | |
1826 | ||
1827 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1828 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
394763f6 LP |
1829 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
1830 | log_oom(); /* we don't care too much about OOM here... */ | |
1831 | } | |
fcd8b266 | 1832 | |
ef734fd6 | 1833 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1834 | |
1835 | switch (mount->state) { | |
1836 | ||
1837 | case MOUNT_MOUNTED: | |
aef83136 LP |
1838 | /* This has just been unmounted by |
1839 | * somebody else, follow the state | |
1840 | * change. */ | |
cf6f7f66 | 1841 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1842 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1843 | break; |
1844 | ||
1845 | default: | |
e537352b | 1846 | break; |
e537352b LP |
1847 | } |
1848 | ||
1849 | } else if (mount->just_mounted || mount->just_changed) { | |
1850 | ||
fcd8b266 | 1851 | /* A mount point was added or changed */ |
e537352b LP |
1852 | |
1853 | switch (mount->state) { | |
1854 | ||
1855 | case MOUNT_DEAD: | |
fdf20a31 | 1856 | case MOUNT_FAILED: |
4b58153d LP |
1857 | |
1858 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1859 | * generate a new invocation ID for this implicitly and automatically. */ | |
1860 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1861 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1862 | break; |
1863 | ||
1864 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1865 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1866 | break; |
1867 | ||
1868 | default: | |
1869 | /* Nothing really changed, but let's | |
1870 | * issue an notification call | |
1871 | * nonetheless, in case somebody is | |
1872 | * waiting for this. (e.g. file system | |
1873 | * ro/rw remounts.) */ | |
1874 | mount_set_state(mount, mount->state); | |
1875 | break; | |
1876 | } | |
394763f6 | 1877 | } |
fcd8b266 | 1878 | |
11222d0f | 1879 | if (mount_is_mounted(mount) && |
394763f6 LP |
1880 | mount->from_proc_self_mountinfo && |
1881 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1882 | |
548f6937 | 1883 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
394763f6 LP |
1884 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) |
1885 | log_oom(); | |
e537352b LP |
1886 | } |
1887 | ||
1888 | /* Reset the flags for later calls */ | |
1889 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1890 | } | |
718db961 | 1891 | |
fcd8b266 LP |
1892 | SET_FOREACH(what, gone, i) { |
1893 | if (set_contains(around, what)) | |
1894 | continue; | |
1895 | ||
1896 | /* Let the device units know that the device is no longer mounted */ | |
1897 | (void) device_found_node(m, what, false, DEVICE_FOUND_MOUNT, true); | |
1898 | } | |
1899 | ||
718db961 | 1900 | return 0; |
e537352b LP |
1901 | } |
1902 | ||
fdf20a31 | 1903 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1904 | Mount *m = MOUNT(u); |
1905 | ||
1906 | assert(m); | |
1907 | ||
fdf20a31 | 1908 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1909 | mount_set_state(m, MOUNT_DEAD); |
1910 | ||
9d2f5178 LP |
1911 | m->result = MOUNT_SUCCESS; |
1912 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1913 | } |
1914 | ||
718db961 | 1915 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1916 | Mount *m = MOUNT(u); |
1917 | ||
1918 | assert(m); | |
1919 | ||
814cc562 | 1920 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1921 | } |
1922 | ||
291d565a LP |
1923 | static int mount_control_pid(Unit *u) { |
1924 | Mount *m = MOUNT(u); | |
1925 | ||
1926 | assert(m); | |
1927 | ||
1928 | return m->control_pid; | |
1929 | } | |
1930 | ||
a16e1123 LP |
1931 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1932 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1933 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1934 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1935 | }; | |
1936 | ||
1937 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1938 | ||
9d2f5178 LP |
1939 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1940 | [MOUNT_SUCCESS] = "success", | |
1941 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1942 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1943 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1944 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1945 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1946 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1947 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1948 | }; |
1949 | ||
1950 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1951 | ||
87f0e418 | 1952 | const UnitVTable mount_vtable = { |
7d17cfbc | 1953 | .object_size = sizeof(Mount), |
718db961 LP |
1954 | .exec_context_offset = offsetof(Mount, exec_context), |
1955 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1956 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1957 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1958 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1959 | |
f975e971 LP |
1960 | .sections = |
1961 | "Unit\0" | |
1962 | "Mount\0" | |
1963 | "Install\0", | |
4ad49000 | 1964 | .private_section = "Mount", |
71645aca | 1965 | |
e537352b LP |
1966 | .init = mount_init, |
1967 | .load = mount_load, | |
034c6ed7 | 1968 | .done = mount_done, |
e537352b | 1969 | |
f50e0a01 LP |
1970 | .coldplug = mount_coldplug, |
1971 | ||
034c6ed7 | 1972 | .dump = mount_dump, |
5cb5a6ff | 1973 | |
e537352b LP |
1974 | .start = mount_start, |
1975 | .stop = mount_stop, | |
1976 | .reload = mount_reload, | |
1977 | ||
8a0867d6 LP |
1978 | .kill = mount_kill, |
1979 | ||
a16e1123 LP |
1980 | .serialize = mount_serialize, |
1981 | .deserialize_item = mount_deserialize_item, | |
1982 | ||
f50e0a01 | 1983 | .active_state = mount_active_state, |
10a94420 | 1984 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1985 | |
f2f725e5 | 1986 | .may_gc = mount_may_gc, |
701cc384 | 1987 | |
e537352b | 1988 | .sigchld_event = mount_sigchld_event, |
e537352b | 1989 | |
fdf20a31 | 1990 | .reset_failed = mount_reset_failed, |
291d565a LP |
1991 | |
1992 | .control_pid = mount_control_pid, | |
5632e374 | 1993 | |
718db961 | 1994 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1995 | .bus_set_property = bus_mount_set_property, |
1996 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1997 | |
68db7a3b ZJS |
1998 | .get_timeout = mount_get_timeout, |
1999 | ||
0e252f6b TG |
2000 | .can_transient = true, |
2001 | ||
f50e0a01 | 2002 | .enumerate = mount_enumerate, |
c6918296 MS |
2003 | .shutdown = mount_shutdown, |
2004 | ||
2005 | .status_message_formats = { | |
2006 | .starting_stopping = { | |
2007 | [0] = "Mounting %s...", | |
2008 | [1] = "Unmounting %s...", | |
2009 | }, | |
2010 | .finished_start_job = { | |
2011 | [JOB_DONE] = "Mounted %s.", | |
2012 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2013 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2014 | }, | |
2015 | .finished_stop_job = { | |
2016 | [JOB_DONE] = "Unmounted %s.", | |
2017 | [JOB_FAILED] = "Failed unmounting %s.", | |
2018 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2019 | }, | |
2020 | }, | |
5cb5a6ff | 2021 | }; |