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Commit | Line | Data |
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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <errno.h> |
b08d03ff LP |
23 | #include <stdio.h> |
24 | #include <mntent.h> | |
ef734fd6 | 25 | #include <sys/epoll.h> |
e537352b | 26 | #include <signal.h> |
5cb5a6ff | 27 | |
87f0e418 | 28 | #include "unit.h" |
5cb5a6ff LP |
29 | #include "mount.h" |
30 | #include "load-fragment.h" | |
5cb5a6ff | 31 | #include "load-dropin.h" |
b08d03ff | 32 | #include "log.h" |
e537352b LP |
33 | #include "strv.h" |
34 | #include "mount-setup.h" | |
9e2f7c11 | 35 | #include "unit-name.h" |
5cb5a6ff | 36 | |
f50e0a01 LP |
37 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
38 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
39 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 40 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 41 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
e537352b | 42 | [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING, |
f50e0a01 | 43 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
e537352b LP |
44 | [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
45 | [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
46 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING, | |
47 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING, | |
48 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, | |
49 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
f50e0a01 LP |
50 | [MOUNT_MAINTAINANCE] = UNIT_INACTIVE, |
51 | }; | |
5cb5a6ff | 52 | |
f50e0a01 LP |
53 | static const char* const state_string_table[_MOUNT_STATE_MAX] = { |
54 | [MOUNT_DEAD] = "dead", | |
55 | [MOUNT_MOUNTING] = "mounting", | |
e537352b | 56 | [MOUNT_MOUNTING_DONE] = "mounting-done", |
f50e0a01 | 57 | [MOUNT_MOUNTED] = "mounted", |
e537352b | 58 | [MOUNT_REMOUNTING] = "remounting", |
f50e0a01 | 59 | [MOUNT_UNMOUNTING] = "unmounting", |
e537352b LP |
60 | [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm", |
61 | [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill", | |
62 | [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm", | |
63 | [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill", | |
64 | [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm", | |
65 | [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill", | |
f50e0a01 LP |
66 | [MOUNT_MAINTAINANCE] = "maintainance" |
67 | }; | |
5cb5a6ff | 68 | |
5e94833f LP |
69 | static void service_unwatch_control_pid(Mount *m) { |
70 | assert(m); | |
71 | ||
72 | if (m->control_pid <= 0) | |
73 | return; | |
74 | ||
75 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
76 | m->control_pid = 0; | |
77 | } | |
78 | ||
e537352b LP |
79 | static void mount_parameters_done(MountParameters *p) { |
80 | assert(p); | |
81 | ||
82 | free(p->what); | |
83 | free(p->options); | |
84 | free(p->fstype); | |
85 | ||
86 | p->what = p->options = p->fstype = NULL; | |
87 | } | |
88 | ||
87f0e418 | 89 | static void mount_done(Unit *u) { |
ef734fd6 | 90 | Mount *m = MOUNT(u); |
034c6ed7 | 91 | |
ef734fd6 | 92 | assert(m); |
034c6ed7 | 93 | |
e537352b LP |
94 | free(m->where); |
95 | m->where = NULL; | |
f50e0a01 | 96 | |
e537352b LP |
97 | mount_parameters_done(&m->parameters_etc_fstab); |
98 | mount_parameters_done(&m->parameters_proc_self_mountinfo); | |
99 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 100 | |
e537352b LP |
101 | exec_context_done(&m->exec_context); |
102 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
103 | m->control_command = NULL; | |
f50e0a01 | 104 | |
5e94833f | 105 | service_unwatch_control_pid(m); |
f50e0a01 | 106 | |
e537352b | 107 | unit_unwatch_timer(u, &m->timer_watch); |
f50e0a01 LP |
108 | } |
109 | ||
e537352b | 110 | static void mount_init(Unit *u) { |
f50e0a01 LP |
111 | Mount *m = MOUNT(u); |
112 | ||
e537352b LP |
113 | assert(u); |
114 | assert(u->meta.load_state == UNIT_STUB); | |
5cb5a6ff | 115 | |
e537352b LP |
116 | m->state = 0; |
117 | m->from_etc_fstab = false; | |
118 | m->from_proc_self_mountinfo = false; | |
119 | m->from_fragment = false; | |
5cb5a6ff | 120 | |
e537352b LP |
121 | m->is_mounted = false; |
122 | m->just_mounted = false; | |
123 | m->just_changed = false; | |
f50e0a01 | 124 | |
e537352b | 125 | m->timeout_usec = DEFAULT_TIMEOUT_USEC; |
5cb5a6ff | 126 | |
e537352b LP |
127 | zero(m->exec_command); |
128 | exec_context_init(&m->exec_context); | |
5cb5a6ff | 129 | |
e537352b | 130 | m->kill_mode = 0; |
b08d03ff | 131 | |
e537352b LP |
132 | m->control_pid = 0; |
133 | m->failure = false; | |
ef734fd6 | 134 | |
e537352b | 135 | m->timer_watch.type = WATCH_INVALID; |
b08d03ff LP |
136 | } |
137 | ||
138 | static int mount_add_node_links(Mount *m) { | |
139 | Unit *device; | |
140 | char *e; | |
141 | int r; | |
e537352b | 142 | const char *what; |
b08d03ff LP |
143 | |
144 | assert(m); | |
145 | ||
146 | /* Adds in links to the device that this node is based on */ | |
147 | ||
e537352b LP |
148 | if (m->parameters_fragment.what) |
149 | what = m->parameters_fragment.what; | |
150 | else if (m->parameters_etc_fstab.what) | |
151 | what = m->parameters_etc_fstab.what; | |
152 | else | |
153 | /* We observe kernel mounts only while they are live, | |
154 | * hence don't create any links for them */ | |
155 | return 0; | |
156 | ||
157 | if (!path_startswith(what, "/dev/")) | |
b08d03ff LP |
158 | return 0; |
159 | ||
9e2f7c11 | 160 | if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) |
b08d03ff LP |
161 | return -ENOMEM; |
162 | ||
9e2f7c11 | 163 | r = manager_load_unit(UNIT(m)->meta.manager, e, NULL, &device); |
b08d03ff LP |
164 | free(e); |
165 | ||
166 | if (r < 0) | |
167 | return r; | |
168 | ||
169 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, device)) < 0) | |
170 | return r; | |
171 | ||
172 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, device)) < 0) | |
173 | return r; | |
174 | ||
e537352b LP |
175 | if (UNIT(m)->meta.manager->running_as == MANAGER_INIT || |
176 | UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM) | |
177 | if ((r = unit_add_dependency(device, UNIT_WANTS, UNIT(m))) < 0) | |
178 | return r; | |
b08d03ff LP |
179 | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static int mount_add_path_links(Mount *m) { | |
ef734fd6 | 184 | Meta *other; |
b08d03ff LP |
185 | int r; |
186 | ||
e537352b LP |
187 | assert(m); |
188 | ||
b08d03ff LP |
189 | /* Adds in link to other mount points, that might lie below or |
190 | * above us in the hierarchy */ | |
191 | ||
ef734fd6 | 192 | LIST_FOREACH(units_per_type, other, UNIT(m)->meta.manager->units_per_type[UNIT_MOUNT]) { |
b08d03ff LP |
193 | Mount *n; |
194 | ||
ef734fd6 | 195 | n = (Mount*) other; |
b08d03ff | 196 | |
ef734fd6 | 197 | if (n == m) |
79ef004b | 198 | continue; |
b08d03ff | 199 | |
e537352b LP |
200 | if (m->meta.load_state != UNIT_LOADED) |
201 | continue; | |
202 | ||
b08d03ff LP |
203 | if (path_startswith(m->where, n->where)) { |
204 | ||
e537352b | 205 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(other))) < 0) |
b08d03ff LP |
206 | return r; |
207 | ||
e537352b LP |
208 | if (n->from_etc_fstab || n->from_fragment) |
209 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(other))) < 0) | |
210 | return r; | |
b08d03ff | 211 | |
e537352b | 212 | } else if (path_startswith(n->where, m->where)) { |
b08d03ff | 213 | |
e537352b | 214 | if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(other))) < 0) |
b08d03ff LP |
215 | return r; |
216 | ||
e537352b LP |
217 | if (m->from_etc_fstab || m->from_fragment) |
218 | if ((r = unit_add_dependency(UNIT(other), UNIT_REQUIRES, UNIT(m))) < 0) | |
219 | return r; | |
b08d03ff LP |
220 | } |
221 | } | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
e537352b LP |
226 | static bool mount_test_option(const char *haystack, const char *needle) { |
227 | struct mntent me; | |
228 | ||
229 | assert(needle); | |
230 | ||
231 | /* Like glibc's hasmntopt(), but works on a string, not a | |
232 | * struct mntent */ | |
233 | ||
234 | if (!haystack) | |
235 | return false; | |
236 | ||
237 | zero(me); | |
238 | me.mnt_opts = (char*) haystack; | |
239 | ||
240 | return !!hasmntopt(&me, needle); | |
241 | } | |
242 | ||
243 | static int mount_add_target_links(Mount *m) { | |
244 | const char *target; | |
245 | MountParameters *p; | |
246 | Unit *u; | |
247 | int r; | |
9fcc065a LP |
248 | bool noauto; |
249 | bool handle; | |
e537352b LP |
250 | |
251 | assert(m); | |
252 | ||
253 | if (m->from_fragment) | |
254 | p = &m->parameters_fragment; | |
255 | else if (m->from_etc_fstab) | |
256 | p = &m->parameters_etc_fstab; | |
257 | else | |
258 | return 0; | |
259 | ||
9fcc065a LP |
260 | noauto = mount_test_option(p->options, MNTOPT_NOAUTO); |
261 | handle = mount_test_option(p->options, "comment=systemd.mount"); | |
e537352b | 262 | |
9fcc065a | 263 | if (noauto && !handle) |
e537352b LP |
264 | return 0; |
265 | ||
266 | if (mount_test_option(p->options, "_netdev") || | |
267 | fstype_is_network(p->fstype)) | |
268 | target = SPECIAL_REMOTE_FS_TARGET; | |
269 | else | |
270 | target = SPECIAL_LOCAL_FS_TARGET; | |
271 | ||
9e2f7c11 | 272 | if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &u)) < 0) |
e537352b LP |
273 | return r; |
274 | ||
9fcc065a LP |
275 | if (handle) |
276 | if ((r = unit_add_dependency(u, UNIT_WANTS, UNIT(m))) < 0) | |
277 | return r; | |
e537352b LP |
278 | |
279 | return unit_add_dependency(UNIT(m), UNIT_BEFORE, u); | |
280 | } | |
281 | ||
282 | static int mount_load(Unit *u) { | |
283 | Mount *m = MOUNT(u); | |
284 | int r; | |
285 | ||
286 | assert(u); | |
287 | assert(u->meta.load_state == UNIT_STUB); | |
288 | ||
289 | if ((r = unit_load_fragment_and_dropin_optional(u)) < 0) | |
290 | return r; | |
291 | ||
292 | /* This is a new unit? Then let's add in some extras */ | |
293 | if (u->meta.load_state == UNIT_LOADED) { | |
294 | ||
295 | /* Minor validity checking */ | |
296 | if ((m->parameters_fragment.options || m->parameters_fragment.fstype) && !m->parameters_fragment.what) | |
297 | return -EBADMSG; | |
298 | ||
299 | if (m->parameters_fragment.what) | |
300 | m->from_fragment = true; | |
301 | ||
302 | if ((r = mount_add_node_links(MOUNT(u))) < 0) | |
303 | return r; | |
304 | ||
305 | if ((r = mount_add_path_links(MOUNT(u))) < 0) | |
306 | return r; | |
307 | ||
308 | if ((r = mount_add_target_links(MOUNT(u))) < 0) | |
309 | return r; | |
310 | ||
311 | if ((r = unit_add_default_cgroup(u)) < 0) | |
312 | return r; | |
313 | } | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static void mount_set_state(Mount *m, MountState state) { | |
319 | MountState old_state; | |
320 | assert(m); | |
321 | ||
322 | old_state = m->state; | |
323 | m->state = state; | |
324 | ||
325 | if (state != MOUNT_MOUNTING && | |
326 | state != MOUNT_MOUNTING_DONE && | |
327 | state != MOUNT_REMOUNTING && | |
328 | state != MOUNT_UNMOUNTING && | |
329 | state != MOUNT_MOUNTING_SIGTERM && | |
330 | state != MOUNT_MOUNTING_SIGKILL && | |
331 | state != MOUNT_UNMOUNTING_SIGTERM && | |
332 | state != MOUNT_UNMOUNTING_SIGKILL && | |
333 | state != MOUNT_REMOUNTING_SIGTERM && | |
334 | state != MOUNT_REMOUNTING_SIGKILL) { | |
335 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
5e94833f | 336 | service_unwatch_control_pid(m); |
e537352b LP |
337 | m->control_command = NULL; |
338 | } | |
339 | ||
340 | if (state != old_state) | |
9e2f7c11 | 341 | log_debug("%s changed %s → %s", UNIT(m)->meta.id, state_string_table[old_state], state_string_table[state]); |
e537352b LP |
342 | |
343 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]); | |
344 | } | |
345 | ||
346 | static int mount_coldplug(Unit *u) { | |
347 | Mount *m = MOUNT(u); | |
348 | ||
349 | assert(m); | |
350 | assert(m->state == MOUNT_DEAD); | |
351 | ||
352 | if (m->from_proc_self_mountinfo) | |
353 | mount_set_state(m, MOUNT_MOUNTED); | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { | |
359 | pid_t pid; | |
360 | int r; | |
361 | ||
362 | assert(m); | |
363 | assert(c); | |
364 | assert(_pid); | |
365 | ||
366 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) | |
367 | goto fail; | |
368 | ||
369 | if ((r = exec_spawn(c, | |
9e2f7c11 | 370 | NULL, |
e537352b LP |
371 | &m->exec_context, |
372 | NULL, 0, | |
373 | true, | |
374 | true, | |
80876c20 | 375 | UNIT(m)->meta.manager->confirm_spawn, |
e537352b LP |
376 | UNIT(m)->meta.cgroup_bondings, |
377 | &pid)) < 0) | |
378 | goto fail; | |
379 | ||
380 | if ((r = unit_watch_pid(UNIT(m), pid)) < 0) | |
381 | /* FIXME: we need to do something here */ | |
382 | goto fail; | |
383 | ||
384 | *_pid = pid; | |
385 | ||
386 | return 0; | |
387 | ||
388 | fail: | |
389 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
390 | ||
391 | return r; | |
392 | } | |
393 | ||
394 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
395 | Mount *m = MOUNT(u); | |
396 | MountParameters *p; | |
397 | ||
398 | assert(m); | |
399 | assert(f); | |
400 | ||
401 | if (m->from_proc_self_mountinfo) | |
402 | p = &m->parameters_proc_self_mountinfo; | |
403 | else if (m->from_fragment) | |
404 | p = &m->parameters_fragment; | |
405 | else | |
406 | p = &m->parameters_etc_fstab; | |
407 | ||
408 | fprintf(f, | |
409 | "%sMount State: %s\n" | |
410 | "%sWhere: %s\n" | |
411 | "%sWhat: %s\n" | |
412 | "%sFile System Type: %s\n" | |
413 | "%sOptions: %s\n" | |
414 | "%sFrom /etc/fstab: %s\n" | |
415 | "%sFrom /proc/self/mountinfo: %s\n" | |
416 | "%sFrom fragment: %s\n" | |
417 | "%sKillMode: %s\n", | |
418 | prefix, state_string_table[m->state], | |
419 | prefix, m->where, | |
420 | prefix, strna(p->what), | |
421 | prefix, strna(p->fstype), | |
422 | prefix, strna(p->options), | |
423 | prefix, yes_no(m->from_etc_fstab), | |
424 | prefix, yes_no(m->from_proc_self_mountinfo), | |
425 | prefix, yes_no(m->from_fragment), | |
426 | prefix, kill_mode_to_string(m->kill_mode)); | |
427 | ||
428 | if (m->control_pid > 0) | |
429 | fprintf(f, | |
430 | "%sControl PID: %llu\n", | |
431 | prefix, (unsigned long long) m->control_pid); | |
432 | ||
433 | exec_context_dump(&m->exec_context, f, prefix); | |
434 | } | |
435 | ||
436 | static void mount_enter_dead(Mount *m, bool success) { | |
437 | assert(m); | |
438 | ||
439 | if (!success) | |
440 | m->failure = true; | |
441 | ||
442 | mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD); | |
443 | } | |
444 | ||
80876c20 LP |
445 | static void mount_enter_mounted(Mount *m, bool success) { |
446 | assert(m); | |
447 | ||
448 | if (!success) | |
449 | m->failure = true; | |
450 | ||
451 | mount_set_state(m, MOUNT_MOUNTED); | |
452 | } | |
453 | ||
e537352b LP |
454 | static void mount_enter_signal(Mount *m, MountState state, bool success) { |
455 | int r; | |
80876c20 | 456 | bool sent = false; |
e537352b LP |
457 | |
458 | assert(m); | |
459 | ||
460 | if (!success) | |
461 | m->failure = true; | |
462 | ||
80876c20 LP |
463 | if (m->kill_mode != KILL_NONE) { |
464 | int sig = (state == MOUNT_MOUNTING_SIGTERM || | |
465 | state == MOUNT_UNMOUNTING_SIGTERM || | |
466 | state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL; | |
e537352b LP |
467 | |
468 | if (m->kill_mode == KILL_CONTROL_GROUP) { | |
469 | ||
470 | if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) { | |
471 | if (r != -EAGAIN && r != -ESRCH) | |
472 | goto fail; | |
473 | } else | |
474 | sent = true; | |
475 | } | |
476 | ||
80876c20 | 477 | if (!sent && m->control_pid > 0) |
e537352b LP |
478 | if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) { |
479 | r = -errno; | |
480 | goto fail; | |
481 | } | |
482 | } | |
483 | ||
80876c20 LP |
484 | if (sent) { |
485 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) | |
486 | goto fail; | |
e537352b | 487 | |
80876c20 LP |
488 | mount_set_state(m, state); |
489 | } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) | |
490 | mount_enter_mounted(m, true); | |
491 | else | |
e537352b LP |
492 | mount_enter_dead(m, true); |
493 | ||
494 | return; | |
495 | ||
496 | fail: | |
9e2f7c11 | 497 | log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r)); |
e537352b | 498 | |
80876c20 LP |
499 | if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) |
500 | mount_enter_mounted(m, false); | |
501 | else | |
502 | mount_enter_dead(m, false); | |
e537352b LP |
503 | } |
504 | ||
505 | static void mount_enter_unmounting(Mount *m, bool success) { | |
506 | ExecCommand *c; | |
507 | int r; | |
508 | ||
509 | assert(m); | |
510 | ||
511 | if (!success) | |
512 | m->failure = true; | |
513 | ||
514 | m->control_command = c = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
515 | ||
516 | if ((r = exec_command_set( | |
517 | c, | |
518 | "/bin/umount", | |
519 | m->where, | |
520 | NULL)) < 0) | |
521 | goto fail; | |
522 | ||
5e94833f LP |
523 | service_unwatch_control_pid(m); |
524 | ||
e537352b LP |
525 | if ((r = mount_spawn(m, c, &m->control_pid)) < 0) |
526 | goto fail; | |
527 | ||
528 | mount_set_state(m, MOUNT_UNMOUNTING); | |
529 | ||
530 | return; | |
531 | ||
532 | fail: | |
9e2f7c11 | 533 | log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r)); |
e537352b LP |
534 | mount_enter_mounted(m, false); |
535 | } | |
536 | ||
537 | static void mount_enter_mounting(Mount *m, bool success) { | |
538 | ExecCommand *c; | |
539 | int r; | |
540 | ||
541 | assert(m); | |
542 | ||
543 | if (!success) | |
544 | m->failure = true; | |
545 | ||
546 | m->control_command = c = m->exec_command + MOUNT_EXEC_MOUNT; | |
547 | ||
548 | if (m->from_fragment) | |
549 | r = exec_command_set( | |
550 | c, | |
551 | "/bin/mount", | |
552 | m->parameters_fragment.what, | |
553 | m->where, | |
554 | "-t", m->parameters_fragment.fstype, | |
555 | "-o", m->parameters_fragment.options, | |
556 | NULL); | |
557 | else if (m->from_etc_fstab) | |
558 | r = exec_command_set( | |
559 | c, | |
560 | "/bin/mount", | |
561 | m->where, | |
562 | NULL); | |
563 | else | |
564 | r = -ENOENT; | |
565 | ||
566 | if (r < 0) | |
567 | goto fail; | |
568 | ||
5e94833f LP |
569 | service_unwatch_control_pid(m); |
570 | ||
e537352b LP |
571 | if ((r = mount_spawn(m, c, &m->control_pid)) < 0) |
572 | goto fail; | |
573 | ||
574 | mount_set_state(m, MOUNT_MOUNTING); | |
575 | ||
576 | return; | |
577 | ||
578 | fail: | |
9e2f7c11 | 579 | log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r)); |
e537352b LP |
580 | mount_enter_dead(m, false); |
581 | } | |
582 | ||
583 | static void mount_enter_mounting_done(Mount *m, bool success) { | |
584 | assert(m); | |
585 | ||
586 | if (!success) | |
587 | m->failure = true; | |
588 | ||
589 | mount_set_state(m, MOUNT_MOUNTING_DONE); | |
590 | } | |
591 | ||
592 | static void mount_enter_remounting(Mount *m, bool success) { | |
593 | ExecCommand *c; | |
594 | int r; | |
595 | ||
596 | assert(m); | |
597 | ||
598 | if (!success) | |
599 | m->failure = true; | |
600 | ||
601 | m->control_command = c = m->exec_command + MOUNT_EXEC_REMOUNT; | |
602 | ||
603 | if (m->from_fragment) { | |
604 | char *buf = NULL; | |
605 | const char *o; | |
606 | ||
607 | if (m->parameters_fragment.options) { | |
608 | if (!(buf = strappend("remount,", m->parameters_fragment.options))) { | |
609 | r = -ENOMEM; | |
610 | goto fail; | |
611 | } | |
612 | ||
613 | o = buf; | |
614 | } else | |
615 | o = "remount"; | |
616 | ||
617 | r = exec_command_set( | |
618 | c, | |
619 | "/bin/mount", | |
620 | m->parameters_fragment.what, | |
621 | m->where, | |
622 | "-t", m->parameters_fragment.fstype, | |
623 | "-o", o, | |
624 | NULL); | |
625 | ||
626 | free(buf); | |
627 | } else if (m->from_etc_fstab) | |
628 | r = exec_command_set( | |
629 | c, | |
630 | "/bin/mount", | |
631 | m->where, | |
632 | "-o", "remount", | |
633 | NULL); | |
634 | else | |
635 | r = -ENOENT; | |
636 | ||
637 | if (r < 0) { | |
638 | r = -ENOMEM; | |
639 | goto fail; | |
640 | } | |
641 | ||
5e94833f LP |
642 | service_unwatch_control_pid(m); |
643 | ||
e537352b LP |
644 | if ((r = mount_spawn(m, c, &m->control_pid)) < 0) |
645 | goto fail; | |
646 | ||
647 | mount_set_state(m, MOUNT_REMOUNTING); | |
648 | ||
649 | return; | |
650 | ||
651 | fail: | |
652 | mount_enter_mounted(m, false); | |
653 | } | |
654 | ||
655 | static int mount_start(Unit *u) { | |
656 | Mount *m = MOUNT(u); | |
657 | ||
658 | assert(m); | |
659 | ||
660 | /* We cannot fulfill this request right now, try again later | |
661 | * please! */ | |
662 | if (m->state == MOUNT_UNMOUNTING || | |
663 | m->state == MOUNT_UNMOUNTING_SIGTERM || | |
664 | m->state == MOUNT_UNMOUNTING_SIGKILL) | |
665 | return -EAGAIN; | |
666 | ||
667 | /* Already on it! */ | |
668 | if (m->state == MOUNT_MOUNTING || | |
669 | m->state == MOUNT_MOUNTING_SIGTERM || | |
670 | m->state == MOUNT_MOUNTING_SIGKILL) | |
671 | return 0; | |
672 | ||
673 | assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE); | |
674 | ||
675 | m->failure = false; | |
676 | ||
677 | mount_enter_mounting(m, true); | |
678 | return 0; | |
679 | } | |
680 | ||
681 | static int mount_stop(Unit *u) { | |
682 | Mount *m = MOUNT(u); | |
683 | ||
684 | assert(m); | |
685 | ||
686 | /* Cann't do this right now. */ | |
687 | if (m->state == MOUNT_MOUNTING || | |
688 | m->state == MOUNT_MOUNTING_DONE || | |
689 | m->state == MOUNT_MOUNTING_SIGTERM || | |
690 | m->state == MOUNT_MOUNTING_SIGKILL || | |
691 | m->state == MOUNT_REMOUNTING || | |
692 | m->state == MOUNT_REMOUNTING_SIGTERM || | |
693 | m->state == MOUNT_REMOUNTING_SIGKILL) | |
694 | return -EAGAIN; | |
695 | ||
696 | /* Already on it */ | |
697 | if (m->state == MOUNT_UNMOUNTING || | |
698 | m->state == MOUNT_UNMOUNTING_SIGKILL || | |
699 | m->state == MOUNT_UNMOUNTING_SIGTERM) | |
700 | return 0; | |
701 | ||
702 | assert(m->state == MOUNT_MOUNTED); | |
703 | ||
704 | mount_enter_unmounting(m, true); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | static int mount_reload(Unit *u) { | |
709 | Mount *m = MOUNT(u); | |
710 | ||
711 | assert(m); | |
712 | ||
713 | if (m->state == MOUNT_MOUNTING_DONE) | |
714 | return -EAGAIN; | |
715 | ||
716 | assert(m->state == MOUNT_MOUNTED); | |
717 | ||
718 | mount_enter_remounting(m, true); | |
719 | return 0; | |
720 | } | |
721 | ||
722 | static UnitActiveState mount_active_state(Unit *u) { | |
723 | assert(u); | |
724 | ||
725 | return state_translation_table[MOUNT(u)->state]; | |
726 | } | |
727 | ||
10a94420 LP |
728 | static const char *mount_sub_state_to_string(Unit *u) { |
729 | assert(u); | |
730 | ||
731 | return state_string_table[MOUNT(u)->state]; | |
732 | } | |
733 | ||
e537352b LP |
734 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
735 | Mount *m = MOUNT(u); | |
736 | bool success; | |
737 | ||
738 | assert(m); | |
739 | assert(pid >= 0); | |
740 | ||
741 | success = code == CLD_EXITED && status == 0; | |
742 | m->failure = m->failure || !success; | |
743 | ||
744 | assert(m->control_pid == pid); | |
745 | assert(m->control_command); | |
746 | ||
747 | exec_status_fill(&m->control_command->exec_status, pid, code, status); | |
748 | m->control_pid = 0; | |
749 | ||
9e2f7c11 | 750 | log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); |
e537352b LP |
751 | |
752 | /* Note that mount(8) returning and the kernel sending us a | |
753 | * mount table change event might happen out-of-order. If an | |
754 | * operation succeed we assume the kernel will follow soon too | |
755 | * and already change into the resulting state. If it fails | |
756 | * we check if the kernel still knows about the mount. and | |
757 | * change state accordingly. */ | |
758 | ||
759 | switch (m->state) { | |
760 | ||
761 | case MOUNT_MOUNTING: | |
762 | case MOUNT_MOUNTING_DONE: | |
763 | case MOUNT_MOUNTING_SIGKILL: | |
764 | case MOUNT_MOUNTING_SIGTERM: | |
765 | case MOUNT_REMOUNTING: | |
766 | case MOUNT_REMOUNTING_SIGKILL: | |
767 | case MOUNT_REMOUNTING_SIGTERM: | |
768 | ||
769 | if (success && m->from_proc_self_mountinfo) | |
770 | mount_enter_mounted(m, true); | |
771 | else if (m->from_proc_self_mountinfo) | |
772 | mount_enter_mounted(m, false); | |
773 | else | |
774 | mount_enter_dead(m, false); | |
775 | break; | |
776 | ||
777 | case MOUNT_UNMOUNTING: | |
778 | case MOUNT_UNMOUNTING_SIGKILL: | |
779 | case MOUNT_UNMOUNTING_SIGTERM: | |
780 | ||
781 | if (success) | |
782 | mount_enter_dead(m, true); | |
783 | else if (m->from_proc_self_mountinfo) | |
784 | mount_enter_mounted(m, false); | |
785 | else | |
786 | mount_enter_dead(m, false); | |
787 | break; | |
788 | ||
789 | default: | |
790 | assert_not_reached("Uh, control process died at wrong time."); | |
791 | } | |
792 | } | |
793 | ||
794 | static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) { | |
795 | Mount *m = MOUNT(u); | |
796 | ||
797 | assert(m); | |
798 | assert(elapsed == 1); | |
799 | assert(w == &m->timer_watch); | |
800 | ||
801 | switch (m->state) { | |
802 | ||
803 | case MOUNT_MOUNTING: | |
804 | case MOUNT_MOUNTING_DONE: | |
9e2f7c11 | 805 | log_warning("%s mounting timed out. Stopping.", u->meta.id); |
e537352b LP |
806 | mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false); |
807 | break; | |
808 | ||
809 | case MOUNT_REMOUNTING: | |
9e2f7c11 | 810 | log_warning("%s remounting timed out. Stopping.", u->meta.id); |
e537352b LP |
811 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false); |
812 | break; | |
813 | ||
814 | case MOUNT_UNMOUNTING: | |
9e2f7c11 | 815 | log_warning("%s unmounting timed out. Stopping.", u->meta.id); |
e537352b LP |
816 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false); |
817 | break; | |
818 | ||
819 | case MOUNT_MOUNTING_SIGTERM: | |
9e2f7c11 | 820 | log_warning("%s mounting timed out. Killing.", u->meta.id); |
e537352b LP |
821 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false); |
822 | break; | |
823 | ||
824 | case MOUNT_REMOUNTING_SIGTERM: | |
9e2f7c11 | 825 | log_warning("%s remounting timed out. Killing.", u->meta.id); |
e537352b LP |
826 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false); |
827 | break; | |
828 | ||
829 | case MOUNT_UNMOUNTING_SIGTERM: | |
9e2f7c11 | 830 | log_warning("%s unmounting timed out. Killing.", u->meta.id); |
e537352b LP |
831 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false); |
832 | break; | |
833 | ||
834 | case MOUNT_MOUNTING_SIGKILL: | |
835 | case MOUNT_REMOUNTING_SIGKILL: | |
836 | case MOUNT_UNMOUNTING_SIGKILL: | |
9e2f7c11 | 837 | log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id); |
e537352b LP |
838 | |
839 | if (m->from_proc_self_mountinfo) | |
840 | mount_enter_mounted(m, false); | |
841 | else | |
842 | mount_enter_dead(m, false); | |
843 | break; | |
844 | ||
845 | default: | |
846 | assert_not_reached("Timeout at wrong time."); | |
847 | } | |
848 | } | |
849 | ||
850 | static int mount_add_one( | |
851 | Manager *m, | |
852 | const char *what, | |
853 | const char *where, | |
854 | const char *options, | |
855 | const char *fstype, | |
856 | bool from_proc_self_mountinfo, | |
857 | bool set_flags) { | |
b08d03ff LP |
858 | int r; |
859 | Unit *u; | |
860 | bool delete; | |
e537352b LP |
861 | char *e, *w = NULL, *o = NULL, *f = NULL; |
862 | MountParameters *mp; | |
b08d03ff | 863 | |
f50e0a01 | 864 | assert(m); |
b08d03ff LP |
865 | assert(what); |
866 | assert(where); | |
e537352b LP |
867 | assert(options); |
868 | assert(fstype); | |
869 | ||
870 | assert(!set_flags || from_proc_self_mountinfo); | |
871 | ||
872 | /* Ignore API mount points. They should never be referenced in | |
873 | * dependencies ever. */ | |
874 | if (mount_point_is_api(where)) | |
875 | return 0; | |
b08d03ff LP |
876 | |
877 | /* probably some kind of swap, which we don't cover for now */ | |
878 | if (where[0] != '/') | |
879 | return 0; | |
880 | ||
881 | if (streq(where, "/")) | |
2e478a46 | 882 | e = strdup("-.mount"); |
b08d03ff | 883 | else |
9e2f7c11 | 884 | e = unit_name_build_escape(where+1, NULL, ".mount"); |
b08d03ff LP |
885 | |
886 | if (!e) | |
887 | return -ENOMEM; | |
888 | ||
889 | if (!(u = manager_get_unit(m, e))) { | |
890 | delete = true; | |
891 | ||
892 | if (!(u = unit_new(m))) { | |
893 | free(e); | |
894 | return -ENOMEM; | |
895 | } | |
896 | ||
897 | r = unit_add_name(u, e); | |
898 | free(e); | |
899 | ||
900 | if (r < 0) | |
901 | goto fail; | |
902 | ||
e537352b | 903 | if (!(MOUNT(u)->where = strdup(where))) { |
f50e0a01 LP |
904 | r = -ENOMEM; |
905 | goto fail; | |
906 | } | |
907 | ||
908 | if ((r = unit_set_description(u, where)) < 0) | |
b08d03ff | 909 | goto fail; |
ef734fd6 | 910 | |
f94ea366 | 911 | unit_add_to_load_queue(u); |
b08d03ff LP |
912 | } else { |
913 | delete = false; | |
914 | free(e); | |
915 | } | |
916 | ||
e537352b LP |
917 | if (!(w = strdup(what)) || |
918 | !(o = strdup(options)) || | |
919 | !(f = strdup(fstype))) { | |
920 | r = -ENOMEM; | |
921 | goto fail; | |
922 | } | |
923 | ||
924 | if (from_proc_self_mountinfo) { | |
925 | mp = &MOUNT(u)->parameters_proc_self_mountinfo; | |
926 | ||
927 | if (set_flags) { | |
928 | MOUNT(u)->is_mounted = true; | |
929 | MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
930 | MOUNT(u)->just_changed = !streq_ptr(MOUNT(u)->parameters_proc_self_mountinfo.options, o); | |
931 | } | |
ef734fd6 | 932 | |
f50e0a01 | 933 | MOUNT(u)->from_proc_self_mountinfo = true; |
e537352b | 934 | |
ef734fd6 | 935 | } else { |
e537352b LP |
936 | mp = &MOUNT(u)->parameters_etc_fstab; |
937 | ||
f50e0a01 | 938 | MOUNT(u)->from_etc_fstab = true; |
ef734fd6 | 939 | } |
f50e0a01 | 940 | |
e537352b LP |
941 | free(mp->what); |
942 | mp->what = w; | |
b08d03ff | 943 | |
e537352b LP |
944 | free(mp->options); |
945 | mp->options = o; | |
946 | ||
947 | free(mp->fstype); | |
948 | mp->fstype = f; | |
b08d03ff | 949 | |
c1e1601e LP |
950 | unit_add_to_dbus_queue(u); |
951 | ||
b08d03ff LP |
952 | return 0; |
953 | ||
954 | fail: | |
e537352b LP |
955 | free(w); |
956 | free(o); | |
957 | free(f); | |
958 | ||
b08d03ff LP |
959 | if (delete && u) |
960 | unit_free(u); | |
961 | ||
962 | return 0; | |
963 | } | |
964 | ||
965 | static char *fstab_node_to_udev_node(char *p) { | |
966 | char *dn, *t; | |
967 | int r; | |
968 | ||
969 | /* FIXME: to follow udev's logic 100% we need to leave valid | |
970 | * UTF8 chars unescaped */ | |
971 | ||
972 | if (startswith(p, "LABEL=")) { | |
973 | ||
f50e0a01 | 974 | if (!(t = xescape(p+6, "/ "))) |
b08d03ff LP |
975 | return NULL; |
976 | ||
f50e0a01 | 977 | r = asprintf(&dn, "/dev/disk/by-label/%s", t); |
b08d03ff LP |
978 | free(t); |
979 | ||
980 | if (r < 0) | |
981 | return NULL; | |
982 | ||
983 | return dn; | |
984 | } | |
985 | ||
986 | if (startswith(p, "UUID=")) { | |
987 | ||
f50e0a01 | 988 | if (!(t = xescape(p+5, "/ "))) |
b08d03ff LP |
989 | return NULL; |
990 | ||
f50e0a01 | 991 | r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t)); |
b08d03ff LP |
992 | free(t); |
993 | ||
994 | if (r < 0) | |
995 | return NULL; | |
996 | ||
997 | return dn; | |
998 | } | |
999 | ||
1000 | return strdup(p); | |
1001 | } | |
1002 | ||
e537352b | 1003 | static int mount_load_etc_fstab(Manager *m) { |
b08d03ff LP |
1004 | FILE *f; |
1005 | int r; | |
1006 | struct mntent* me; | |
1007 | ||
1008 | assert(m); | |
1009 | ||
1010 | errno = 0; | |
1011 | if (!(f = setmntent("/etc/fstab", "r"))) | |
1012 | return -errno; | |
1013 | ||
1014 | while ((me = getmntent(f))) { | |
1015 | char *where, *what; | |
1016 | ||
1017 | if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) { | |
1018 | r = -ENOMEM; | |
1019 | goto finish; | |
1020 | } | |
1021 | ||
1022 | if (!(where = strdup(me->mnt_dir))) { | |
1023 | free(what); | |
1024 | r = -ENOMEM; | |
1025 | goto finish; | |
1026 | } | |
1027 | ||
1028 | if (what[0] == '/') | |
1029 | path_kill_slashes(what); | |
1030 | ||
1031 | if (where[0] == '/') | |
1032 | path_kill_slashes(where); | |
1033 | ||
e537352b | 1034 | r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false); |
b08d03ff LP |
1035 | free(what); |
1036 | free(where); | |
1037 | ||
1038 | if (r < 0) | |
1039 | goto finish; | |
1040 | } | |
1041 | ||
1042 | r = 0; | |
1043 | finish: | |
1044 | ||
1045 | endmntent(f); | |
1046 | return r; | |
1047 | } | |
1048 | ||
ef734fd6 | 1049 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
b08d03ff | 1050 | int r; |
e537352b | 1051 | char *device, *path, *options, *fstype, *d, *p; |
b08d03ff LP |
1052 | |
1053 | assert(m); | |
1054 | ||
ef734fd6 | 1055 | rewind(m->proc_self_mountinfo); |
b08d03ff LP |
1056 | |
1057 | for (;;) { | |
1058 | int k; | |
e537352b LP |
1059 | |
1060 | device = path = options = fstype = d = p = NULL; | |
b08d03ff | 1061 | |
ef734fd6 | 1062 | if ((k = fscanf(m->proc_self_mountinfo, |
b08d03ff LP |
1063 | "%*s " /* (1) mount id */ |
1064 | "%*s " /* (2) parent id */ | |
1065 | "%*s " /* (3) major:minor */ | |
1066 | "%*s " /* (4) root */ | |
1067 | "%ms " /* (5) mount point */ | |
e537352b | 1068 | "%ms" /* (6) mount options */ |
b08d03ff LP |
1069 | "%*[^-]" /* (7) optional fields */ |
1070 | "- " /* (8) seperator */ | |
e537352b | 1071 | "%ms " /* (9) file system type */ |
ef734fd6 LP |
1072 | "%ms" /* (10) mount source */ |
1073 | "%*[^\n]", /* some rubbish at the end */ | |
b08d03ff | 1074 | &path, |
e537352b LP |
1075 | &options, |
1076 | &fstype, | |
1077 | &device)) != 4) { | |
b08d03ff | 1078 | |
ef734fd6 LP |
1079 | if (k == EOF) |
1080 | break; | |
b08d03ff | 1081 | |
e537352b LP |
1082 | r = -EBADMSG; |
1083 | goto finish; | |
b08d03ff LP |
1084 | } |
1085 | ||
e537352b LP |
1086 | if (!(d = cunescape(device)) || |
1087 | !(p = cunescape(path))) { | |
1088 | r = -ENOMEM; | |
1089 | goto finish; | |
b08d03ff | 1090 | } |
b08d03ff | 1091 | |
e537352b LP |
1092 | if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0) |
1093 | goto finish; | |
b08d03ff | 1094 | |
e537352b LP |
1095 | free(device); |
1096 | free(path); | |
1097 | free(options); | |
1098 | free(fstype); | |
b08d03ff LP |
1099 | free(d); |
1100 | free(p); | |
b08d03ff LP |
1101 | } |
1102 | ||
e537352b LP |
1103 | r = 0; |
1104 | ||
1105 | finish: | |
1106 | free(device); | |
1107 | free(path); | |
1108 | free(options); | |
1109 | free(fstype); | |
1110 | free(d); | |
1111 | free(p); | |
1112 | ||
1113 | return r; | |
1114 | } | |
1115 | ||
1116 | static void mount_shutdown(Manager *m) { | |
1117 | assert(m); | |
1118 | ||
1119 | if (m->proc_self_mountinfo) | |
1120 | fclose(m->proc_self_mountinfo); | |
b08d03ff LP |
1121 | } |
1122 | ||
1123 | static int mount_enumerate(Manager *m) { | |
1124 | int r; | |
ef734fd6 | 1125 | struct epoll_event ev; |
b08d03ff LP |
1126 | assert(m); |
1127 | ||
ef734fd6 LP |
1128 | if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "r"))) |
1129 | return -errno; | |
1130 | ||
1131 | m->mount_watch.type = WATCH_MOUNT; | |
1132 | m->mount_watch.fd = fileno(m->proc_self_mountinfo); | |
1133 | ||
1134 | zero(ev); | |
1135 | ev.events = EPOLLERR; | |
1136 | ev.data.ptr = &m->mount_watch; | |
1137 | ||
1138 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0) | |
1139 | return -errno; | |
1140 | ||
e537352b | 1141 | if ((r = mount_load_etc_fstab(m)) < 0) |
b08d03ff LP |
1142 | goto fail; |
1143 | ||
ef734fd6 | 1144 | if ((r = mount_load_proc_self_mountinfo(m, false)) < 0) |
b08d03ff LP |
1145 | goto fail; |
1146 | ||
1147 | return 0; | |
1148 | ||
1149 | fail: | |
1150 | mount_shutdown(m); | |
1151 | return r; | |
5cb5a6ff LP |
1152 | } |
1153 | ||
ef734fd6 LP |
1154 | void mount_fd_event(Manager *m, int events) { |
1155 | Meta *meta; | |
1156 | int r; | |
1157 | ||
1158 | assert(m); | |
f94ea366 | 1159 | assert(events == EPOLLERR); |
ef734fd6 LP |
1160 | |
1161 | /* The manager calls this for every fd event happening on the | |
1162 | * /proc/self/mountinfo file, which informs us about mounting | |
1163 | * table changes */ | |
1164 | ||
1165 | if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) { | |
1166 | log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-errno)); | |
e537352b LP |
1167 | |
1168 | /* Reset flags, just in case, for later calls */ | |
1169 | LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) { | |
1170 | Mount *mount = (Mount*) meta; | |
1171 | ||
1172 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1173 | } | |
1174 | ||
ef734fd6 LP |
1175 | return; |
1176 | } | |
1177 | ||
1178 | manager_dispatch_load_queue(m); | |
1179 | ||
1180 | LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) { | |
1181 | Mount *mount = (Mount*) meta; | |
1182 | ||
e537352b LP |
1183 | if (!mount->is_mounted) { |
1184 | /* This has just been unmounted. */ | |
1185 | ||
ef734fd6 | 1186 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1187 | |
1188 | switch (mount->state) { | |
1189 | ||
1190 | case MOUNT_MOUNTED: | |
1191 | mount_enter_dead(mount, true); | |
1192 | break; | |
1193 | ||
1194 | default: | |
1195 | mount_set_state(mount, mount->state); | |
1196 | break; | |
1197 | ||
1198 | } | |
1199 | ||
1200 | } else if (mount->just_mounted || mount->just_changed) { | |
1201 | ||
1202 | /* New or changed entrymount */ | |
1203 | ||
1204 | switch (mount->state) { | |
1205 | ||
1206 | case MOUNT_DEAD: | |
1207 | case MOUNT_MAINTAINANCE: | |
1208 | mount_enter_mounted(mount, true); | |
1209 | break; | |
1210 | ||
1211 | case MOUNT_MOUNTING: | |
1212 | mount_enter_mounting_done(mount, true); | |
1213 | break; | |
1214 | ||
1215 | default: | |
1216 | /* Nothing really changed, but let's | |
1217 | * issue an notification call | |
1218 | * nonetheless, in case somebody is | |
1219 | * waiting for this. (e.g. file system | |
1220 | * ro/rw remounts.) */ | |
1221 | mount_set_state(mount, mount->state); | |
1222 | break; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | /* Reset the flags for later calls */ | |
1227 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | int mount_path_is_mounted(Manager *m, const char* path) { | |
1232 | char *t; | |
1233 | int r; | |
1234 | ||
1235 | assert(m); | |
1236 | assert(path); | |
1237 | ||
1238 | if (path[0] != '/') | |
1239 | return 1; | |
1240 | ||
1241 | if (!(t = strdup(path))) | |
1242 | return -ENOMEM; | |
1243 | ||
1244 | path_kill_slashes(t); | |
1245 | ||
1246 | for (;;) { | |
1247 | char *e, *slash; | |
1248 | Unit *u; | |
1249 | ||
9e2f7c11 | 1250 | if (!(e = unit_name_build_escape(t+1, NULL, ".mount"))) { |
e537352b LP |
1251 | r = -ENOMEM; |
1252 | goto finish; | |
1253 | } | |
1254 | ||
1255 | u = manager_get_unit(m, e); | |
1256 | free(e); | |
1257 | ||
1258 | if (u && | |
1259 | (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) && | |
1260 | MOUNT(u)->state != MOUNT_MOUNTED) { | |
1261 | r = 0; | |
1262 | goto finish; | |
ef734fd6 LP |
1263 | } |
1264 | ||
e537352b LP |
1265 | assert_se(slash = strrchr(t, '/')); |
1266 | ||
1267 | if (slash == t) { | |
1268 | r = 1; | |
1269 | goto finish; | |
1270 | } | |
1271 | ||
1272 | *slash = 0; | |
ef734fd6 | 1273 | } |
e537352b LP |
1274 | |
1275 | r = 1; | |
1276 | ||
1277 | finish: | |
1278 | free(t); | |
1279 | return r; | |
ef734fd6 LP |
1280 | } |
1281 | ||
87f0e418 | 1282 | const UnitVTable mount_vtable = { |
5cb5a6ff LP |
1283 | .suffix = ".mount", |
1284 | ||
e537352b | 1285 | .no_alias = true, |
9e2f7c11 | 1286 | .no_instances = true, |
e537352b LP |
1287 | |
1288 | .init = mount_init, | |
1289 | .load = mount_load, | |
034c6ed7 | 1290 | .done = mount_done, |
e537352b | 1291 | |
f50e0a01 LP |
1292 | .coldplug = mount_coldplug, |
1293 | ||
034c6ed7 | 1294 | .dump = mount_dump, |
5cb5a6ff | 1295 | |
e537352b LP |
1296 | .start = mount_start, |
1297 | .stop = mount_stop, | |
1298 | .reload = mount_reload, | |
1299 | ||
f50e0a01 | 1300 | .active_state = mount_active_state, |
10a94420 | 1301 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1302 | |
e537352b LP |
1303 | .sigchld_event = mount_sigchld_event, |
1304 | .timer_event = mount_timer_event, | |
1305 | ||
f50e0a01 LP |
1306 | .enumerate = mount_enumerate, |
1307 | .shutdown = mount_shutdown | |
5cb5a6ff | 1308 | }; |