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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 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" |
4139c1b2 | 36 | #include "dbus-mount.h" |
514f4ef5 | 37 | #include "special.h" |
8a0867d6 | 38 | #include "bus-errors.h" |
9a57c629 | 39 | #include "exit-status.h" |
f6a6225e | 40 | #include "def.h" |
5cb5a6ff | 41 | |
f50e0a01 LP |
42 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
43 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
44 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 45 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 46 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 47 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 48 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
e537352b LP |
49 | [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
50 | [MOUNT_MOUNTING_SIGKILL] = 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 | |
a16e1123 LP |
58 | static void mount_init(Unit *u) { |
59 | Mount *m = MOUNT(u); | |
5cb5a6ff | 60 | |
a16e1123 LP |
61 | assert(u); |
62 | assert(u->meta.load_state == UNIT_STUB); | |
63 | ||
64 | m->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
3e5235b0 LP |
65 | m->directory_mode = 0755; |
66 | ||
c3686083 | 67 | exec_context_init(&m->exec_context); |
d893269d LP |
68 | |
69 | /* The stdio/kmsg bridge socket is on /, in order to avoid a | |
70 | * dep loop, don't use kmsg logging for -.mount */ | |
71 | if (!unit_has_name(u, "-.mount")) | |
72 | m->exec_context.std_output = EXEC_OUTPUT_KMSG; | |
c3686083 | 73 | |
a16e1123 LP |
74 | /* We need to make sure that /bin/mount is always called in |
75 | * the same process group as us, so that the autofs kernel | |
76 | * side doesn't send us another mount request while we are | |
77 | * already trying to comply its last one. */ | |
74922904 | 78 | m->exec_context.same_pgrp = true; |
8d567588 | 79 | |
a16e1123 LP |
80 | m->timer_watch.type = WATCH_INVALID; |
81 | ||
82 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
c8f4d764 LP |
83 | |
84 | m->meta.ignore_on_isolate = true; | |
8d567588 LP |
85 | } |
86 | ||
a16e1123 | 87 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
88 | assert(m); |
89 | ||
90 | if (m->control_pid <= 0) | |
91 | return; | |
92 | ||
93 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
94 | m->control_pid = 0; | |
95 | } | |
96 | ||
e537352b LP |
97 | static void mount_parameters_done(MountParameters *p) { |
98 | assert(p); | |
99 | ||
100 | free(p->what); | |
101 | free(p->options); | |
102 | free(p->fstype); | |
103 | ||
104 | p->what = p->options = p->fstype = NULL; | |
105 | } | |
106 | ||
87f0e418 | 107 | static void mount_done(Unit *u) { |
ef734fd6 | 108 | Mount *m = MOUNT(u); |
e0fa621b | 109 | Meta *other; |
034c6ed7 | 110 | |
ef734fd6 | 111 | assert(m); |
034c6ed7 | 112 | |
e537352b LP |
113 | free(m->where); |
114 | m->where = NULL; | |
f50e0a01 | 115 | |
e0fa621b | 116 | /* Try to detach us from the automount unit if there is any */ |
ab5c3e3f | 117 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_AUTOMOUNT]) { |
e0fa621b LP |
118 | Automount *a = (Automount*) other; |
119 | ||
120 | if (a->mount == m) | |
121 | a->mount = NULL; | |
122 | } | |
123 | ||
e537352b LP |
124 | mount_parameters_done(&m->parameters_etc_fstab); |
125 | mount_parameters_done(&m->parameters_proc_self_mountinfo); | |
126 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 127 | |
e537352b LP |
128 | exec_context_done(&m->exec_context); |
129 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
130 | m->control_command = NULL; | |
f50e0a01 | 131 | |
a16e1123 | 132 | mount_unwatch_control_pid(m); |
f50e0a01 | 133 | |
e537352b | 134 | unit_unwatch_timer(u, &m->timer_watch); |
f50e0a01 LP |
135 | } |
136 | ||
cb39ed3f LP |
137 | static MountParameters* get_mount_parameters_configured(Mount *m) { |
138 | assert(m); | |
139 | ||
140 | if (m->from_fragment) | |
141 | return &m->parameters_fragment; | |
142 | else if (m->from_etc_fstab) | |
143 | return &m->parameters_etc_fstab; | |
144 | ||
145 | return NULL; | |
146 | } | |
147 | ||
148 | static MountParameters* get_mount_parameters(Mount *m) { | |
149 | assert(m); | |
150 | ||
151 | if (m->from_proc_self_mountinfo) | |
152 | return &m->parameters_proc_self_mountinfo; | |
153 | ||
154 | return get_mount_parameters_configured(m); | |
155 | } | |
156 | ||
6e2ef85b LP |
157 | static int mount_add_mount_links(Mount *m) { |
158 | Meta *other; | |
b08d03ff | 159 | int r; |
5c78d8e2 | 160 | MountParameters *pm; |
b08d03ff | 161 | |
6e2ef85b | 162 | assert(m); |
b08d03ff | 163 | |
cb39ed3f | 164 | pm = get_mount_parameters_configured(m); |
5c78d8e2 | 165 | |
6e2ef85b LP |
166 | /* Adds in links to other mount points that might lie below or |
167 | * above us in the hierarchy */ | |
e537352b | 168 | |
ab5c3e3f | 169 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_MOUNT]) { |
6e2ef85b | 170 | Mount *n = (Mount*) other; |
5c78d8e2 | 171 | MountParameters *pn; |
07b0b134 | 172 | |
6e2ef85b LP |
173 | if (n == m) |
174 | continue; | |
b08d03ff | 175 | |
6e2ef85b LP |
176 | if (n->meta.load_state != UNIT_LOADED) |
177 | continue; | |
b08d03ff | 178 | |
cb39ed3f | 179 | pn = get_mount_parameters_configured(n); |
5c78d8e2 | 180 | |
6e2ef85b | 181 | if (path_startswith(m->where, n->where)) { |
b08d03ff | 182 | |
6e2ef85b LP |
183 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) |
184 | return r; | |
b08d03ff | 185 | |
cb39ed3f | 186 | if (pn) |
6e2ef85b LP |
187 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
188 | return r; | |
b08d03ff | 189 | |
6e2ef85b | 190 | } else if (path_startswith(n->where, m->where)) { |
b08d03ff | 191 | |
5c78d8e2 LP |
192 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) |
193 | return r; | |
194 | ||
cb39ed3f | 195 | if (pm) |
5c78d8e2 LP |
196 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
197 | return r; | |
198 | ||
199 | } else if (pm && path_startswith(pm->what, n->where)) { | |
200 | ||
201 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) | |
6e2ef85b LP |
202 | return r; |
203 | ||
cb39ed3f LP |
204 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
205 | return r; | |
5c78d8e2 LP |
206 | |
207 | } else if (pn && path_startswith(pn->what, m->where)) { | |
208 | ||
209 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) | |
210 | return r; | |
211 | ||
cb39ed3f LP |
212 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
213 | return r; | |
6e2ef85b LP |
214 | } |
215 | } | |
b08d03ff LP |
216 | |
217 | return 0; | |
218 | } | |
219 | ||
6e2ef85b | 220 | static int mount_add_swap_links(Mount *m) { |
ef734fd6 | 221 | Meta *other; |
b08d03ff LP |
222 | int r; |
223 | ||
6e2ef85b | 224 | assert(m); |
b08d03ff | 225 | |
ab5c3e3f | 226 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_SWAP]) |
6e2ef85b LP |
227 | if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0) |
228 | return r; | |
b08d03ff | 229 | |
6e2ef85b LP |
230 | return 0; |
231 | } | |
b08d03ff | 232 | |
01f78473 LP |
233 | static int mount_add_path_links(Mount *m) { |
234 | Meta *other; | |
235 | int r; | |
236 | ||
237 | assert(m); | |
238 | ||
ab5c3e3f | 239 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_PATH]) |
01f78473 LP |
240 | if ((r = path_add_one_mount_link((Path*) other, m)) < 0) |
241 | return r; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
6e2ef85b LP |
246 | static int mount_add_automount_links(Mount *m) { |
247 | Meta *other; | |
248 | int r; | |
e537352b | 249 | |
6e2ef85b | 250 | assert(m); |
b08d03ff | 251 | |
ab5c3e3f | 252 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_AUTOMOUNT]) |
6e2ef85b LP |
253 | if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0) |
254 | return r; | |
b08d03ff | 255 | |
6e2ef85b LP |
256 | return 0; |
257 | } | |
b08d03ff | 258 | |
6e2ef85b LP |
259 | static int mount_add_socket_links(Mount *m) { |
260 | Meta *other; | |
261 | int r; | |
b08d03ff | 262 | |
6e2ef85b | 263 | assert(m); |
b08d03ff | 264 | |
ab5c3e3f | 265 | LIST_FOREACH(units_by_type, other, m->meta.manager->units_by_type[UNIT_SOCKET]) |
6e2ef85b LP |
266 | if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0) |
267 | return r; | |
b08d03ff LP |
268 | |
269 | return 0; | |
270 | } | |
271 | ||
07b0b134 | 272 | static char* mount_test_option(const char *haystack, const char *needle) { |
e537352b LP |
273 | struct mntent me; |
274 | ||
275 | assert(needle); | |
276 | ||
277 | /* Like glibc's hasmntopt(), but works on a string, not a | |
278 | * struct mntent */ | |
279 | ||
280 | if (!haystack) | |
281 | return false; | |
282 | ||
283 | zero(me); | |
284 | me.mnt_opts = (char*) haystack; | |
285 | ||
07b0b134 | 286 | return hasmntopt(&me, needle); |
e537352b LP |
287 | } |
288 | ||
cb39ed3f LP |
289 | static bool mount_is_network(MountParameters *p) { |
290 | assert(p); | |
291 | ||
292 | if (mount_test_option(p->options, "_netdev")) | |
293 | return true; | |
294 | ||
295 | if (p->fstype && fstype_is_network(p->fstype)) | |
296 | return true; | |
297 | ||
298 | return false; | |
299 | } | |
300 | ||
301 | static bool mount_is_bind(MountParameters *p) { | |
302 | assert(p); | |
303 | ||
304 | if (mount_test_option(p->options, "bind")) | |
305 | return true; | |
306 | ||
307 | if (p->fstype && streq(p->fstype, "bind")) | |
308 | return true; | |
309 | ||
310 | return false; | |
311 | } | |
312 | ||
313 | static bool needs_quota(MountParameters *p) { | |
314 | assert(p); | |
315 | ||
316 | if (mount_is_network(p)) | |
317 | return false; | |
318 | ||
319 | if (mount_is_bind(p)) | |
320 | return false; | |
321 | ||
322 | return mount_test_option(p->options, "usrquota") || | |
323 | mount_test_option(p->options, "grpquota"); | |
324 | } | |
325 | ||
155da457 | 326 | static int mount_add_fstab_links(Mount *m) { |
a55da3cd | 327 | const char *target, *after = NULL; |
e537352b | 328 | MountParameters *p; |
a16e1123 | 329 | Unit *tu; |
e537352b | 330 | int r; |
d9143006 | 331 | bool noauto, nofail, handle, automount; |
e537352b LP |
332 | |
333 | assert(m); | |
334 | ||
155da457 LP |
335 | if (m->meta.manager->running_as != MANAGER_SYSTEM) |
336 | return 0; | |
337 | ||
cb39ed3f | 338 | if (!(p = get_mount_parameters_configured(m))) |
e537352b LP |
339 | return 0; |
340 | ||
155da457 LP |
341 | if (p != &m->parameters_etc_fstab) |
342 | return 0; | |
343 | ||
344 | noauto = !!mount_test_option(p->options, "noauto"); | |
d9143006 | 345 | nofail = !!mount_test_option(p->options, "nofail"); |
155da457 LP |
346 | automount = |
347 | mount_test_option(p->options, "comment=systemd.automount") || | |
348 | mount_test_option(p->options, "x-systemd-automount"); | |
d4a7e06d | 349 | handle = |
155da457 | 350 | automount || |
d4a7e06d LP |
351 | mount_test_option(p->options, "comment=systemd.mount") || |
352 | mount_test_option(p->options, "x-systemd-mount") || | |
d3689161 | 353 | m->meta.manager->mount_auto; |
e537352b | 354 | |
cb39ed3f | 355 | if (mount_is_network(p)) { |
e537352b | 356 | target = SPECIAL_REMOTE_FS_TARGET; |
155da457 | 357 | after = SPECIAL_NETWORK_TARGET; |
a55da3cd | 358 | } else |
e537352b LP |
359 | target = SPECIAL_LOCAL_FS_TARGET; |
360 | ||
155da457 LP |
361 | if (!path_equal(m->where, "/")) |
362 | if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0) | |
363 | return r; | |
364 | ||
398ef8ba | 365 | if ((r = manager_load_unit(m->meta.manager, target, NULL, NULL, &tu)) < 0) |
e537352b LP |
366 | return r; |
367 | ||
a55da3cd | 368 | if (after) |
50483512 | 369 | if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true)) < 0) |
a55da3cd LP |
370 | return r; |
371 | ||
155da457 | 372 | if (automount) { |
a16e1123 LP |
373 | Unit *am; |
374 | ||
375 | if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0) | |
9fcc065a | 376 | return r; |
e537352b | 377 | |
155da457 LP |
378 | /* If auto is configured as well also pull in the |
379 | * mount right-away, but don't rely on it. */ | |
380 | if (!noauto) /* automount + auto */ | |
381 | if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0) | |
382 | return r; | |
383 | ||
384 | /* Install automount unit */ | |
385 | if (!nofail) /* automount + fail */ | |
386 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, UNIT(am), true); | |
387 | else /* automount + nofail */ | |
388 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, UNIT(am), true); | |
389 | ||
390 | } else if (handle && !noauto) { | |
a16e1123 | 391 | |
81bf310e LP |
392 | /* Automatically add mount points that aren't natively |
393 | * configured to local-fs.target */ | |
a16e1123 | 394 | |
155da457 LP |
395 | if (!nofail) /* auto + fail */ |
396 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true); | |
397 | else /* auto + nofail */ | |
398 | return unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true); | |
a16e1123 | 399 | } |
155da457 LP |
400 | |
401 | return 0; | |
e537352b LP |
402 | } |
403 | ||
173a8d04 LP |
404 | static int mount_add_device_links(Mount *m) { |
405 | MountParameters *p; | |
9fff8a1f | 406 | int r; |
173a8d04 LP |
407 | |
408 | assert(m); | |
409 | ||
cb39ed3f | 410 | if (!(p = get_mount_parameters_configured(m))) |
173a8d04 LP |
411 | return 0; |
412 | ||
9fff8a1f | 413 | if (!p->what) |
173a8d04 | 414 | return 0; |
5c78d8e2 | 415 | |
155da457 LP |
416 | if (!mount_is_bind(p) && |
417 | !path_equal(m->where, "/") && | |
418 | p == &m->parameters_etc_fstab) { | |
9fff8a1f | 419 | bool nofail, noauto; |
173a8d04 | 420 | |
155da457 | 421 | noauto = !!mount_test_option(p->options, "noauto"); |
9fff8a1f LP |
422 | nofail = !!mount_test_option(p->options, "nofail"); |
423 | ||
424 | if ((r = unit_add_node_link(UNIT(m), p->what, | |
425 | !noauto && nofail && | |
426 | UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM)) < 0) | |
427 | return r; | |
428 | } | |
429 | ||
491ad5dc | 430 | if (p->passno > 0 && |
ff2e0f05 | 431 | !mount_is_bind(p) && |
b65a25f2 LP |
432 | UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM && |
433 | !path_equal(m->where, "/")) { | |
9fff8a1f LP |
434 | char *name; |
435 | Unit *fsck; | |
436 | /* Let's add in the fsck service */ | |
173a8d04 | 437 | |
a9e1f5ec | 438 | /* aka SPECIAL_FSCK_SERVICE */ |
9fff8a1f LP |
439 | if (!(name = unit_name_from_path_instance("fsck", p->what, ".service"))) |
440 | return -ENOMEM; | |
441 | ||
442 | if ((r = manager_load_unit_prepare(m->meta.manager, name, NULL, NULL, &fsck)) < 0) { | |
443 | log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); | |
444 | free(name); | |
445 | return r; | |
446 | } | |
447 | ||
448 | free(name); | |
449 | ||
450 | SERVICE(fsck)->fsck_passno = p->passno; | |
451 | ||
0355825f | 452 | if ((r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true)) < 0) |
9fff8a1f LP |
453 | return r; |
454 | } | |
455 | ||
456 | return 0; | |
173a8d04 LP |
457 | } |
458 | ||
2edd4434 LP |
459 | static int mount_add_default_dependencies(Mount *m) { |
460 | int r; | |
461 | ||
462 | assert(m); | |
463 | ||
75d287d3 LP |
464 | if (m->meta.manager->running_as == MANAGER_SYSTEM && |
465 | !path_equal(m->where, "/")) { | |
0c380104 | 466 | MountParameters *p; |
2edd4434 | 467 | |
cb39ed3f LP |
468 | p = get_mount_parameters_configured(m); |
469 | ||
470 | if (p && needs_quota(p)) { | |
0c380104 AB |
471 | if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true)) < 0 || |
472 | (r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true)) < 0) | |
473 | return r; | |
cb39ed3f | 474 | } |
2edd4434 | 475 | |
ead8e478 | 476 | if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0) |
75d287d3 | 477 | return r; |
2edd4434 LP |
478 | } |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
f4c05147 | 483 | static int mount_fix_timeouts(Mount *m) { |
8024c3a7 LP |
484 | MountParameters *p; |
485 | const char *timeout = NULL; | |
486 | Unit *other; | |
487 | Iterator i; | |
488 | usec_t u; | |
f4c05147 LP |
489 | char *t; |
490 | int r; | |
8024c3a7 LP |
491 | |
492 | assert(m); | |
493 | ||
494 | if (!(p = get_mount_parameters_configured(m))) | |
f4c05147 | 495 | return 0; |
8024c3a7 LP |
496 | |
497 | /* Allow configuration how long we wait for a device that | |
498 | * backs a mount point to show up. This is useful to support | |
499 | * endless device timeouts for devices that show up only after | |
500 | * user input, like crypto devices. */ | |
501 | ||
502 | if ((timeout = mount_test_option(p->options, "comment=systemd.device-timeout"))) | |
503 | timeout += 31; | |
504 | else if ((timeout = mount_test_option(p->options, "x-systemd-device-timeout"))) | |
505 | timeout += 25; | |
506 | else | |
f4c05147 LP |
507 | return 0; |
508 | ||
509 | t = strndup(timeout, strcspn(timeout, ",;" WHITESPACE)); | |
510 | if (!t) | |
511 | return -ENOMEM; | |
8024c3a7 | 512 | |
f4c05147 LP |
513 | r = parse_usec(t, &u); |
514 | free(t); | |
515 | ||
516 | if (r < 0) { | |
8024c3a7 | 517 | log_warning("Failed to parse timeout for %s, ignoring: %s", m->where, timeout); |
f4c05147 | 518 | return r; |
8024c3a7 LP |
519 | } |
520 | ||
521 | SET_FOREACH(other, m->meta.dependencies[UNIT_AFTER], i) { | |
522 | if (other->meta.type != UNIT_DEVICE) | |
523 | continue; | |
524 | ||
525 | other->meta.job_timeout = u; | |
526 | } | |
f4c05147 LP |
527 | |
528 | return 0; | |
8024c3a7 LP |
529 | } |
530 | ||
8d567588 LP |
531 | static int mount_verify(Mount *m) { |
532 | bool b; | |
533 | char *e; | |
534 | assert(m); | |
535 | ||
8cbef760 | 536 | if (m->meta.load_state != UNIT_LOADED) |
8d567588 LP |
537 | return 0; |
538 | ||
8cbef760 LP |
539 | if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo) |
540 | return -ENOENT; | |
541 | ||
a16e1123 | 542 | if (!(e = unit_name_from_path(m->where, ".mount"))) |
8d567588 LP |
543 | return -ENOMEM; |
544 | ||
545 | b = unit_has_name(UNIT(m), e); | |
546 | free(e); | |
547 | ||
548 | if (!b) { | |
4cd1fbcc | 549 | log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id); |
8d567588 LP |
550 | return -EINVAL; |
551 | } | |
552 | ||
33ff02c9 LP |
553 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
554 | log_error("Cannot create mount unit for API file system %s. Refusing.", m->where); | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
4e85aff4 | 558 | if (m->meta.fragment_path && !m->parameters_fragment.what) { |
4cd1fbcc | 559 | log_error("%s's What setting is missing. Refusing.", m->meta.id); |
4e85aff4 LP |
560 | return -EBADMSG; |
561 | } | |
562 | ||
2e22afe9 | 563 | if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) { |
4d0e5dbd LP |
564 | log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", m->meta.id); |
565 | return -EINVAL; | |
566 | } | |
567 | ||
8d567588 LP |
568 | return 0; |
569 | } | |
570 | ||
e537352b LP |
571 | static int mount_load(Unit *u) { |
572 | Mount *m = MOUNT(u); | |
573 | int r; | |
574 | ||
575 | assert(u); | |
576 | assert(u->meta.load_state == UNIT_STUB); | |
577 | ||
578 | if ((r = unit_load_fragment_and_dropin_optional(u)) < 0) | |
579 | return r; | |
580 | ||
581 | /* This is a new unit? Then let's add in some extras */ | |
582 | if (u->meta.load_state == UNIT_LOADED) { | |
27abbe82 LP |
583 | if ((r = unit_add_exec_dependencies(u, &m->exec_context)) < 0) |
584 | return r; | |
585 | ||
4e85aff4 LP |
586 | if (m->meta.fragment_path) |
587 | m->from_fragment = true; | |
155da457 LP |
588 | else if (m->from_etc_fstab) |
589 | m->meta.default_dependencies = false; | |
e537352b | 590 | |
a16e1123 LP |
591 | if (!m->where) |
592 | if (!(m->where = unit_name_to_path(u->meta.id))) | |
593 | return -ENOMEM; | |
594 | ||
595 | path_kill_slashes(m->where); | |
596 | ||
4e85aff4 LP |
597 | if (!m->meta.description) |
598 | if ((r = unit_set_description(u, m->where)) < 0) | |
599 | return r; | |
e537352b | 600 | |
173a8d04 LP |
601 | if ((r = mount_add_device_links(m)) < 0) |
602 | return r; | |
6e2ef85b LP |
603 | |
604 | if ((r = mount_add_mount_links(m)) < 0) | |
605 | return r; | |
606 | ||
607 | if ((r = mount_add_socket_links(m)) < 0) | |
608 | return r; | |
609 | ||
610 | if ((r = mount_add_swap_links(m)) < 0) | |
e537352b LP |
611 | return r; |
612 | ||
01f78473 LP |
613 | if ((r = mount_add_path_links(m)) < 0) |
614 | return r; | |
615 | ||
6e2ef85b | 616 | if ((r = mount_add_automount_links(m)) < 0) |
e537352b LP |
617 | return r; |
618 | ||
155da457 | 619 | if ((r = mount_add_fstab_links(m)) < 0) |
e537352b | 620 | return r; |
4e67ddd6 | 621 | |
2edd4434 LP |
622 | if (m->meta.default_dependencies) |
623 | if ((r = mount_add_default_dependencies(m)) < 0) | |
4e67ddd6 | 624 | return r; |
8024c3a7 | 625 | |
155da457 LP |
626 | if ((r = unit_add_default_cgroups(u)) < 0) |
627 | return r; | |
628 | ||
8024c3a7 | 629 | mount_fix_timeouts(m); |
e537352b LP |
630 | } |
631 | ||
8d567588 | 632 | return mount_verify(m); |
e537352b LP |
633 | } |
634 | ||
a16e1123 LP |
635 | static int mount_notify_automount(Mount *m, int status) { |
636 | Unit *p; | |
637 | int r; | |
638 | ||
639 | assert(m); | |
640 | ||
641 | if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0) | |
642 | return r == -ENOENT ? 0 : r; | |
643 | ||
644 | return automount_send_ready(AUTOMOUNT(p), status); | |
645 | } | |
646 | ||
e537352b LP |
647 | static void mount_set_state(Mount *m, MountState state) { |
648 | MountState old_state; | |
649 | assert(m); | |
650 | ||
651 | old_state = m->state; | |
652 | m->state = state; | |
653 | ||
654 | if (state != MOUNT_MOUNTING && | |
655 | state != MOUNT_MOUNTING_DONE && | |
656 | state != MOUNT_REMOUNTING && | |
657 | state != MOUNT_UNMOUNTING && | |
658 | state != MOUNT_MOUNTING_SIGTERM && | |
659 | state != MOUNT_MOUNTING_SIGKILL && | |
660 | state != MOUNT_UNMOUNTING_SIGTERM && | |
661 | state != MOUNT_UNMOUNTING_SIGKILL && | |
662 | state != MOUNT_REMOUNTING_SIGTERM && | |
663 | state != MOUNT_REMOUNTING_SIGKILL) { | |
664 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
a16e1123 | 665 | mount_unwatch_control_pid(m); |
e537352b | 666 | m->control_command = NULL; |
a16e1123 | 667 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
668 | } |
669 | ||
8d567588 LP |
670 | if (state == MOUNT_MOUNTED || |
671 | state == MOUNT_REMOUNTING) | |
672 | mount_notify_automount(m, 0); | |
673 | else if (state == MOUNT_DEAD || | |
674 | state == MOUNT_UNMOUNTING || | |
675 | state == MOUNT_MOUNTING_SIGTERM || | |
676 | state == MOUNT_MOUNTING_SIGKILL || | |
677 | state == MOUNT_REMOUNTING_SIGTERM || | |
678 | state == MOUNT_REMOUNTING_SIGKILL || | |
679 | state == MOUNT_UNMOUNTING_SIGTERM || | |
680 | state == MOUNT_UNMOUNTING_SIGKILL || | |
fdf20a31 | 681 | state == MOUNT_FAILED) |
8d567588 LP |
682 | mount_notify_automount(m, -ENODEV); |
683 | ||
e537352b | 684 | if (state != old_state) |
40d50879 | 685 | log_debug("%s changed %s -> %s", |
4cd1fbcc | 686 | m->meta.id, |
a16e1123 LP |
687 | mount_state_to_string(old_state), |
688 | mount_state_to_string(state)); | |
e537352b | 689 | |
e2f3b44c LP |
690 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], !m->reload_failure); |
691 | m->reload_failure = false; | |
e537352b LP |
692 | } |
693 | ||
694 | static int mount_coldplug(Unit *u) { | |
695 | Mount *m = MOUNT(u); | |
a16e1123 LP |
696 | MountState new_state = MOUNT_DEAD; |
697 | int r; | |
e537352b LP |
698 | |
699 | assert(m); | |
700 | assert(m->state == MOUNT_DEAD); | |
701 | ||
a16e1123 LP |
702 | if (m->deserialized_state != m->state) |
703 | new_state = m->deserialized_state; | |
704 | else if (m->from_proc_self_mountinfo) | |
705 | new_state = MOUNT_MOUNTED; | |
e537352b | 706 | |
a16e1123 | 707 | if (new_state != m->state) { |
e537352b | 708 | |
a16e1123 LP |
709 | if (new_state == MOUNT_MOUNTING || |
710 | new_state == MOUNT_MOUNTING_DONE || | |
711 | new_state == MOUNT_REMOUNTING || | |
712 | new_state == MOUNT_UNMOUNTING || | |
713 | new_state == MOUNT_MOUNTING_SIGTERM || | |
714 | new_state == MOUNT_MOUNTING_SIGKILL || | |
715 | new_state == MOUNT_UNMOUNTING_SIGTERM || | |
716 | new_state == MOUNT_UNMOUNTING_SIGKILL || | |
717 | new_state == MOUNT_REMOUNTING_SIGTERM || | |
718 | new_state == MOUNT_REMOUNTING_SIGKILL) { | |
e537352b | 719 | |
a16e1123 LP |
720 | if (m->control_pid <= 0) |
721 | return -EBADMSG; | |
e537352b | 722 | |
a16e1123 LP |
723 | if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0) |
724 | return r; | |
e537352b | 725 | |
a16e1123 LP |
726 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
727 | return r; | |
728 | } | |
e537352b | 729 | |
a16e1123 LP |
730 | mount_set_state(m, new_state); |
731 | } | |
e537352b LP |
732 | |
733 | return 0; | |
e537352b LP |
734 | } |
735 | ||
736 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
737 | Mount *m = MOUNT(u); | |
738 | MountParameters *p; | |
739 | ||
740 | assert(m); | |
741 | assert(f); | |
742 | ||
cb39ed3f | 743 | p = get_mount_parameters(m); |
e537352b LP |
744 | |
745 | fprintf(f, | |
746 | "%sMount State: %s\n" | |
747 | "%sWhere: %s\n" | |
748 | "%sWhat: %s\n" | |
749 | "%sFile System Type: %s\n" | |
750 | "%sOptions: %s\n" | |
751 | "%sFrom /etc/fstab: %s\n" | |
752 | "%sFrom /proc/self/mountinfo: %s\n" | |
753 | "%sFrom fragment: %s\n" | |
3e5235b0 | 754 | "%sDirectoryMode: %04o\n", |
a16e1123 | 755 | prefix, mount_state_to_string(m->state), |
e537352b LP |
756 | prefix, m->where, |
757 | prefix, strna(p->what), | |
758 | prefix, strna(p->fstype), | |
759 | prefix, strna(p->options), | |
760 | prefix, yes_no(m->from_etc_fstab), | |
761 | prefix, yes_no(m->from_proc_self_mountinfo), | |
762 | prefix, yes_no(m->from_fragment), | |
3e5235b0 | 763 | prefix, m->directory_mode); |
e537352b LP |
764 | |
765 | if (m->control_pid > 0) | |
766 | fprintf(f, | |
bb00e604 LP |
767 | "%sControl PID: %lu\n", |
768 | prefix, (unsigned long) m->control_pid); | |
e537352b LP |
769 | |
770 | exec_context_dump(&m->exec_context, f, prefix); | |
771 | } | |
772 | ||
a16e1123 LP |
773 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
774 | pid_t pid; | |
775 | int r; | |
776 | ||
777 | assert(m); | |
778 | assert(c); | |
779 | assert(_pid); | |
780 | ||
781 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) | |
782 | goto fail; | |
783 | ||
784 | if ((r = exec_spawn(c, | |
785 | NULL, | |
786 | &m->exec_context, | |
787 | NULL, 0, | |
1137a57c | 788 | m->meta.manager->environment, |
a16e1123 LP |
789 | true, |
790 | true, | |
1e3ad081 | 791 | true, |
c3686083 | 792 | m->meta.manager->confirm_spawn, |
4cd1fbcc | 793 | m->meta.cgroup_bondings, |
a16e1123 LP |
794 | &pid)) < 0) |
795 | goto fail; | |
796 | ||
797 | if ((r = unit_watch_pid(UNIT(m), pid)) < 0) | |
798 | /* FIXME: we need to do something here */ | |
799 | goto fail; | |
800 | ||
801 | *_pid = pid; | |
802 | ||
803 | return 0; | |
804 | ||
805 | fail: | |
806 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
807 | ||
808 | return r; | |
809 | } | |
810 | ||
e537352b LP |
811 | static void mount_enter_dead(Mount *m, bool success) { |
812 | assert(m); | |
813 | ||
814 | if (!success) | |
815 | m->failure = true; | |
816 | ||
fdf20a31 | 817 | mount_set_state(m, m->failure ? MOUNT_FAILED : MOUNT_DEAD); |
e537352b LP |
818 | } |
819 | ||
80876c20 LP |
820 | static void mount_enter_mounted(Mount *m, bool success) { |
821 | assert(m); | |
822 | ||
823 | if (!success) | |
824 | m->failure = true; | |
825 | ||
826 | mount_set_state(m, MOUNT_MOUNTED); | |
827 | } | |
828 | ||
e537352b LP |
829 | static void mount_enter_signal(Mount *m, MountState state, bool success) { |
830 | int r; | |
ca949c9d LP |
831 | Set *pid_set = NULL; |
832 | bool wait_for_exit = false; | |
e537352b LP |
833 | |
834 | assert(m); | |
835 | ||
836 | if (!success) | |
837 | m->failure = true; | |
838 | ||
2e22afe9 | 839 | if (m->exec_context.kill_mode != KILL_NONE) { |
80876c20 LP |
840 | int sig = (state == MOUNT_MOUNTING_SIGTERM || |
841 | state == MOUNT_UNMOUNTING_SIGTERM || | |
2e22afe9 | 842 | state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL; |
e537352b | 843 | |
ca949c9d | 844 | if (m->control_pid > 0) { |
cd25cce9 | 845 | if (kill_and_sigcont(m->control_pid, sig) < 0 && errno != ESRCH) |
e537352b | 846 | |
ca949c9d LP |
847 | log_warning("Failed to kill control process %li: %m", (long) m->control_pid); |
848 | else | |
849 | wait_for_exit = true; | |
e537352b LP |
850 | } |
851 | ||
ca949c9d | 852 | if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) { |
2e22afe9 | 853 | |
ca949c9d LP |
854 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { |
855 | r = -ENOMEM; | |
e537352b LP |
856 | goto fail; |
857 | } | |
ca949c9d LP |
858 | |
859 | /* Exclude the control pid from being killed via the cgroup */ | |
860 | if (m->control_pid > 0) | |
861 | if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) | |
862 | goto fail; | |
863 | ||
430c18ed | 864 | if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig, true, pid_set)) < 0) { |
ca949c9d LP |
865 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) |
866 | log_warning("Failed to kill control group: %s", strerror(-r)); | |
867 | } else if (r > 0) | |
868 | wait_for_exit = true; | |
869 | ||
870 | set_free(pid_set); | |
da19d5c1 | 871 | pid_set = NULL; |
ca949c9d | 872 | } |
e537352b LP |
873 | } |
874 | ||
ca949c9d | 875 | if (wait_for_exit) { |
80876c20 LP |
876 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
877 | goto fail; | |
e537352b | 878 | |
80876c20 LP |
879 | mount_set_state(m, state); |
880 | } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) | |
881 | mount_enter_mounted(m, true); | |
882 | else | |
e537352b LP |
883 | mount_enter_dead(m, true); |
884 | ||
885 | return; | |
886 | ||
887 | fail: | |
4cd1fbcc | 888 | log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r)); |
e537352b | 889 | |
80876c20 LP |
890 | if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) |
891 | mount_enter_mounted(m, false); | |
892 | else | |
893 | mount_enter_dead(m, false); | |
ca949c9d LP |
894 | |
895 | if (pid_set) | |
896 | set_free(pid_set); | |
e537352b LP |
897 | } |
898 | ||
899 | static void mount_enter_unmounting(Mount *m, bool success) { | |
e537352b LP |
900 | int r; |
901 | ||
902 | assert(m); | |
903 | ||
904 | if (!success) | |
905 | m->failure = true; | |
906 | ||
a16e1123 LP |
907 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
908 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b LP |
909 | |
910 | if ((r = exec_command_set( | |
a16e1123 | 911 | m->control_command, |
e537352b LP |
912 | "/bin/umount", |
913 | m->where, | |
914 | NULL)) < 0) | |
915 | goto fail; | |
916 | ||
a16e1123 | 917 | mount_unwatch_control_pid(m); |
5e94833f | 918 | |
a16e1123 | 919 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
920 | goto fail; |
921 | ||
922 | mount_set_state(m, MOUNT_UNMOUNTING); | |
923 | ||
924 | return; | |
925 | ||
926 | fail: | |
4cd1fbcc | 927 | log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r)); |
e537352b LP |
928 | mount_enter_mounted(m, false); |
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 | ||
a16e1123 LP |
937 | m->control_command_id = MOUNT_EXEC_MOUNT; |
938 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 939 | |
3e5235b0 LP |
940 | mkdir_p(m->where, m->directory_mode); |
941 | ||
cb39ed3f LP |
942 | /* Create the source directory for bind-mounts if needed */ |
943 | p = get_mount_parameters_configured(m); | |
944 | if (p && mount_is_bind(p)) | |
945 | mkdir_p(p->what, m->directory_mode); | |
2b583ce6 | 946 | |
e537352b LP |
947 | if (m->from_fragment) |
948 | r = exec_command_set( | |
a16e1123 | 949 | m->control_command, |
e537352b LP |
950 | "/bin/mount", |
951 | m->parameters_fragment.what, | |
952 | m->where, | |
40b8a332 | 953 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
8d567588 | 954 | m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options, |
e537352b LP |
955 | NULL); |
956 | else if (m->from_etc_fstab) | |
957 | r = exec_command_set( | |
a16e1123 | 958 | m->control_command, |
e537352b LP |
959 | "/bin/mount", |
960 | m->where, | |
961 | NULL); | |
962 | else | |
963 | r = -ENOENT; | |
964 | ||
965 | if (r < 0) | |
966 | goto fail; | |
967 | ||
a16e1123 | 968 | mount_unwatch_control_pid(m); |
5e94833f | 969 | |
a16e1123 | 970 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
971 | goto fail; |
972 | ||
973 | mount_set_state(m, MOUNT_MOUNTING); | |
974 | ||
975 | return; | |
976 | ||
977 | fail: | |
4cd1fbcc | 978 | log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r)); |
e537352b LP |
979 | mount_enter_dead(m, false); |
980 | } | |
981 | ||
8d567588 | 982 | static void mount_enter_mounting_done(Mount *m) { |
e537352b LP |
983 | assert(m); |
984 | ||
e537352b LP |
985 | mount_set_state(m, MOUNT_MOUNTING_DONE); |
986 | } | |
987 | ||
988 | static void mount_enter_remounting(Mount *m, bool success) { | |
e537352b LP |
989 | int r; |
990 | ||
991 | assert(m); | |
992 | ||
993 | if (!success) | |
994 | m->failure = true; | |
995 | ||
a16e1123 LP |
996 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
997 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b LP |
998 | |
999 | if (m->from_fragment) { | |
1000 | char *buf = NULL; | |
1001 | const char *o; | |
1002 | ||
1003 | if (m->parameters_fragment.options) { | |
1004 | if (!(buf = strappend("remount,", m->parameters_fragment.options))) { | |
1005 | r = -ENOMEM; | |
1006 | goto fail; | |
1007 | } | |
1008 | ||
1009 | o = buf; | |
1010 | } else | |
1011 | o = "remount"; | |
1012 | ||
1013 | r = exec_command_set( | |
a16e1123 | 1014 | m->control_command, |
e537352b LP |
1015 | "/bin/mount", |
1016 | m->parameters_fragment.what, | |
1017 | m->where, | |
40b8a332 | 1018 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
e537352b LP |
1019 | "-o", o, |
1020 | NULL); | |
1021 | ||
1022 | free(buf); | |
1023 | } else if (m->from_etc_fstab) | |
1024 | r = exec_command_set( | |
a16e1123 | 1025 | m->control_command, |
e537352b LP |
1026 | "/bin/mount", |
1027 | m->where, | |
1028 | "-o", "remount", | |
1029 | NULL); | |
1030 | else | |
1031 | r = -ENOENT; | |
1032 | ||
60b912f6 | 1033 | if (r < 0) |
e537352b | 1034 | goto fail; |
e537352b | 1035 | |
a16e1123 | 1036 | mount_unwatch_control_pid(m); |
5e94833f | 1037 | |
a16e1123 | 1038 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
1039 | goto fail; |
1040 | ||
1041 | mount_set_state(m, MOUNT_REMOUNTING); | |
1042 | ||
1043 | return; | |
1044 | ||
1045 | fail: | |
e364ad06 | 1046 | log_warning("%s failed to run 'remount' task: %s", m->meta.id, strerror(-r)); |
e2f3b44c LP |
1047 | m->reload_failure = true; |
1048 | mount_enter_mounted(m, true); | |
e537352b LP |
1049 | } |
1050 | ||
1051 | static int mount_start(Unit *u) { | |
1052 | Mount *m = MOUNT(u); | |
1053 | ||
1054 | assert(m); | |
1055 | ||
1056 | /* We cannot fulfill this request right now, try again later | |
1057 | * please! */ | |
1058 | if (m->state == MOUNT_UNMOUNTING || | |
1059 | m->state == MOUNT_UNMOUNTING_SIGTERM || | |
60b912f6 LP |
1060 | m->state == MOUNT_UNMOUNTING_SIGKILL || |
1061 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1062 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1063 | return -EAGAIN; |
1064 | ||
1065 | /* Already on it! */ | |
60b912f6 | 1066 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1067 | return 0; |
1068 | ||
fdf20a31 | 1069 | assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED); |
e537352b LP |
1070 | |
1071 | m->failure = false; | |
8d567588 | 1072 | mount_enter_mounting(m); |
e537352b LP |
1073 | return 0; |
1074 | } | |
1075 | ||
1076 | static int mount_stop(Unit *u) { | |
1077 | Mount *m = MOUNT(u); | |
1078 | ||
1079 | assert(m); | |
1080 | ||
e537352b LP |
1081 | /* Already on it */ |
1082 | if (m->state == MOUNT_UNMOUNTING || | |
1083 | m->state == MOUNT_UNMOUNTING_SIGKILL || | |
60b912f6 LP |
1084 | m->state == MOUNT_UNMOUNTING_SIGTERM || |
1085 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1086 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1087 | return 0; |
1088 | ||
3f6c78dc LP |
1089 | assert(m->state == MOUNT_MOUNTING || |
1090 | m->state == MOUNT_MOUNTING_DONE || | |
1091 | m->state == MOUNT_MOUNTED || | |
3f6c78dc LP |
1092 | m->state == MOUNT_REMOUNTING || |
1093 | m->state == MOUNT_REMOUNTING_SIGTERM || | |
1094 | m->state == MOUNT_REMOUNTING_SIGKILL); | |
e537352b LP |
1095 | |
1096 | mount_enter_unmounting(m, true); | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | static int mount_reload(Unit *u) { | |
1101 | Mount *m = MOUNT(u); | |
1102 | ||
1103 | assert(m); | |
1104 | ||
1105 | if (m->state == MOUNT_MOUNTING_DONE) | |
1106 | return -EAGAIN; | |
1107 | ||
1108 | assert(m->state == MOUNT_MOUNTED); | |
1109 | ||
1110 | mount_enter_remounting(m, true); | |
1111 | return 0; | |
1112 | } | |
1113 | ||
a16e1123 LP |
1114 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1115 | Mount *m = MOUNT(u); | |
1116 | ||
1117 | assert(m); | |
1118 | assert(f); | |
1119 | assert(fds); | |
1120 | ||
1121 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
1122 | unit_serialize_item(u, f, "failure", yes_no(m->failure)); | |
1123 | ||
1124 | if (m->control_pid > 0) | |
5925dd3c | 1125 | unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid); |
a16e1123 LP |
1126 | |
1127 | if (m->control_command_id >= 0) | |
1128 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1134 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1135 | |
1136 | assert(u); | |
1137 | assert(key); | |
1138 | assert(value); | |
1139 | assert(fds); | |
1140 | ||
1141 | if (streq(key, "state")) { | |
1142 | MountState state; | |
1143 | ||
1144 | if ((state = mount_state_from_string(value)) < 0) | |
1145 | log_debug("Failed to parse state value %s", value); | |
1146 | else | |
1147 | m->deserialized_state = state; | |
1148 | } else if (streq(key, "failure")) { | |
1149 | int b; | |
1150 | ||
1151 | if ((b = parse_boolean(value)) < 0) | |
1152 | log_debug("Failed to parse failure value %s", value); | |
1153 | else | |
1154 | m->failure = b || m->failure; | |
1155 | ||
1156 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1157 | pid_t pid; |
a16e1123 | 1158 | |
e364ad06 | 1159 | if (parse_pid(value, &pid) < 0) |
a16e1123 LP |
1160 | log_debug("Failed to parse control-pid value %s", value); |
1161 | else | |
5925dd3c | 1162 | m->control_pid = pid; |
a16e1123 LP |
1163 | } else if (streq(key, "control-command")) { |
1164 | MountExecCommand id; | |
1165 | ||
1166 | if ((id = mount_exec_command_from_string(value)) < 0) | |
1167 | log_debug("Failed to parse exec-command value %s", value); | |
1168 | else { | |
1169 | m->control_command_id = id; | |
1170 | m->control_command = m->exec_command + id; | |
1171 | } | |
1172 | ||
1173 | } else | |
1174 | log_debug("Unknown serialization key '%s'", key); | |
1175 | ||
1176 | return 0; | |
1177 | } | |
1178 | ||
e537352b LP |
1179 | static UnitActiveState mount_active_state(Unit *u) { |
1180 | assert(u); | |
1181 | ||
1182 | return state_translation_table[MOUNT(u)->state]; | |
1183 | } | |
1184 | ||
10a94420 LP |
1185 | static const char *mount_sub_state_to_string(Unit *u) { |
1186 | assert(u); | |
1187 | ||
a16e1123 | 1188 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1189 | } |
1190 | ||
701cc384 LP |
1191 | static bool mount_check_gc(Unit *u) { |
1192 | Mount *m = MOUNT(u); | |
1193 | ||
1194 | assert(m); | |
1195 | ||
1196 | return m->from_etc_fstab || m->from_proc_self_mountinfo; | |
1197 | } | |
1198 | ||
e537352b LP |
1199 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1200 | Mount *m = MOUNT(u); | |
1201 | bool success; | |
1202 | ||
1203 | assert(m); | |
1204 | assert(pid >= 0); | |
1205 | ||
8c47c732 LP |
1206 | if (pid != m->control_pid) |
1207 | return; | |
e537352b | 1208 | |
e537352b LP |
1209 | m->control_pid = 0; |
1210 | ||
8c47c732 LP |
1211 | success = is_clean_exit(code, status); |
1212 | m->failure = m->failure || !success; | |
1213 | ||
a16e1123 | 1214 | if (m->control_command) { |
6ea832a2 | 1215 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
a16e1123 LP |
1216 | m->control_command = NULL; |
1217 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1218 | } | |
1219 | ||
92abbefb LP |
1220 | log_full(success ? LOG_DEBUG : LOG_NOTICE, |
1221 | "%s mount process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); | |
e537352b LP |
1222 | |
1223 | /* Note that mount(8) returning and the kernel sending us a | |
1224 | * mount table change event might happen out-of-order. If an | |
1225 | * operation succeed we assume the kernel will follow soon too | |
1226 | * and already change into the resulting state. If it fails | |
1227 | * we check if the kernel still knows about the mount. and | |
1228 | * change state accordingly. */ | |
1229 | ||
1230 | switch (m->state) { | |
1231 | ||
1232 | case MOUNT_MOUNTING: | |
1233 | case MOUNT_MOUNTING_DONE: | |
1234 | case MOUNT_MOUNTING_SIGKILL: | |
1235 | case MOUNT_MOUNTING_SIGTERM: | |
e537352b | 1236 | |
19b160fa | 1237 | if (success) |
e537352b LP |
1238 | mount_enter_mounted(m, true); |
1239 | else if (m->from_proc_self_mountinfo) | |
1240 | mount_enter_mounted(m, false); | |
1241 | else | |
1242 | mount_enter_dead(m, false); | |
1243 | break; | |
1244 | ||
e2f3b44c LP |
1245 | case MOUNT_REMOUNTING: |
1246 | case MOUNT_REMOUNTING_SIGKILL: | |
1247 | case MOUNT_REMOUNTING_SIGTERM: | |
1248 | ||
1249 | m->reload_failure = !success; | |
1250 | if (m->from_proc_self_mountinfo) | |
1251 | mount_enter_mounted(m, true); | |
1252 | else | |
1253 | mount_enter_dead(m, true); | |
1254 | ||
1255 | break; | |
1256 | ||
e537352b LP |
1257 | case MOUNT_UNMOUNTING: |
1258 | case MOUNT_UNMOUNTING_SIGKILL: | |
1259 | case MOUNT_UNMOUNTING_SIGTERM: | |
1260 | ||
1261 | if (success) | |
1262 | mount_enter_dead(m, true); | |
1263 | else if (m->from_proc_self_mountinfo) | |
1264 | mount_enter_mounted(m, false); | |
1265 | else | |
1266 | mount_enter_dead(m, false); | |
1267 | break; | |
1268 | ||
1269 | default: | |
1270 | assert_not_reached("Uh, control process died at wrong time."); | |
1271 | } | |
c4e2ceae LP |
1272 | |
1273 | /* Notify clients about changed exit status */ | |
1274 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1275 | } |
1276 | ||
1277 | static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) { | |
1278 | Mount *m = MOUNT(u); | |
1279 | ||
1280 | assert(m); | |
1281 | assert(elapsed == 1); | |
1282 | assert(w == &m->timer_watch); | |
1283 | ||
1284 | switch (m->state) { | |
1285 | ||
1286 | case MOUNT_MOUNTING: | |
1287 | case MOUNT_MOUNTING_DONE: | |
9e2f7c11 | 1288 | log_warning("%s mounting timed out. Stopping.", u->meta.id); |
e537352b LP |
1289 | mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false); |
1290 | break; | |
1291 | ||
1292 | case MOUNT_REMOUNTING: | |
9e2f7c11 | 1293 | log_warning("%s remounting timed out. Stopping.", u->meta.id); |
e2f3b44c LP |
1294 | m->reload_failure = true; |
1295 | mount_enter_mounted(m, true); | |
e537352b LP |
1296 | break; |
1297 | ||
1298 | case MOUNT_UNMOUNTING: | |
9e2f7c11 | 1299 | log_warning("%s unmounting timed out. Stopping.", u->meta.id); |
e537352b LP |
1300 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false); |
1301 | break; | |
1302 | ||
1303 | case MOUNT_MOUNTING_SIGTERM: | |
ba035df2 LP |
1304 | if (m->exec_context.send_sigkill) { |
1305 | log_warning("%s mounting timed out. Killing.", u->meta.id); | |
1306 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false); | |
1307 | } else { | |
1308 | log_warning("%s mounting timed out. Skipping SIGKILL. Ignoring.", u->meta.id); | |
1309 | ||
1310 | if (m->from_proc_self_mountinfo) | |
1311 | mount_enter_mounted(m, false); | |
1312 | else | |
1313 | mount_enter_dead(m, false); | |
1314 | } | |
e537352b LP |
1315 | break; |
1316 | ||
1317 | case MOUNT_REMOUNTING_SIGTERM: | |
ba035df2 LP |
1318 | if (m->exec_context.send_sigkill) { |
1319 | log_warning("%s remounting timed out. Killing.", u->meta.id); | |
1320 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false); | |
1321 | } else { | |
1322 | log_warning("%s remounting timed out. Skipping SIGKILL. Ignoring.", u->meta.id); | |
1323 | ||
1324 | if (m->from_proc_self_mountinfo) | |
1325 | mount_enter_mounted(m, false); | |
1326 | else | |
1327 | mount_enter_dead(m, false); | |
1328 | } | |
e537352b LP |
1329 | break; |
1330 | ||
1331 | case MOUNT_UNMOUNTING_SIGTERM: | |
ba035df2 LP |
1332 | if (m->exec_context.send_sigkill) { |
1333 | log_warning("%s unmounting timed out. Killing.", u->meta.id); | |
1334 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false); | |
1335 | } else { | |
1336 | log_warning("%s unmounting timed out. Skipping SIGKILL. Ignoring.", u->meta.id); | |
1337 | ||
1338 | if (m->from_proc_self_mountinfo) | |
1339 | mount_enter_mounted(m, false); | |
1340 | else | |
1341 | mount_enter_dead(m, false); | |
1342 | } | |
e537352b LP |
1343 | break; |
1344 | ||
1345 | case MOUNT_MOUNTING_SIGKILL: | |
1346 | case MOUNT_REMOUNTING_SIGKILL: | |
1347 | case MOUNT_UNMOUNTING_SIGKILL: | |
9e2f7c11 | 1348 | log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id); |
e537352b LP |
1349 | |
1350 | if (m->from_proc_self_mountinfo) | |
1351 | mount_enter_mounted(m, false); | |
1352 | else | |
1353 | mount_enter_dead(m, false); | |
1354 | break; | |
1355 | ||
1356 | default: | |
1357 | assert_not_reached("Timeout at wrong time."); | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | static int mount_add_one( | |
1362 | Manager *m, | |
1363 | const char *what, | |
1364 | const char *where, | |
1365 | const char *options, | |
1366 | const char *fstype, | |
9fff8a1f | 1367 | int passno, |
e537352b LP |
1368 | bool from_proc_self_mountinfo, |
1369 | bool set_flags) { | |
b08d03ff LP |
1370 | int r; |
1371 | Unit *u; | |
1372 | bool delete; | |
e537352b | 1373 | char *e, *w = NULL, *o = NULL, *f = NULL; |
4e85aff4 | 1374 | MountParameters *p; |
b08d03ff | 1375 | |
f50e0a01 | 1376 | assert(m); |
b08d03ff LP |
1377 | assert(what); |
1378 | assert(where); | |
e537352b LP |
1379 | assert(options); |
1380 | assert(fstype); | |
1381 | ||
1382 | assert(!set_flags || from_proc_self_mountinfo); | |
1383 | ||
1384 | /* Ignore API mount points. They should never be referenced in | |
1385 | * dependencies ever. */ | |
33ff02c9 | 1386 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1387 | return 0; |
b08d03ff | 1388 | |
8d567588 LP |
1389 | if (streq(fstype, "autofs")) |
1390 | return 0; | |
1391 | ||
4e85aff4 LP |
1392 | /* probably some kind of swap, ignore */ |
1393 | if (!is_path(where)) | |
b08d03ff LP |
1394 | return 0; |
1395 | ||
a16e1123 | 1396 | if (!(e = unit_name_from_path(where, ".mount"))) |
b08d03ff LP |
1397 | return -ENOMEM; |
1398 | ||
1399 | if (!(u = manager_get_unit(m, e))) { | |
1400 | delete = true; | |
1401 | ||
1402 | if (!(u = unit_new(m))) { | |
1403 | free(e); | |
1404 | return -ENOMEM; | |
1405 | } | |
1406 | ||
1407 | r = unit_add_name(u, e); | |
1408 | free(e); | |
1409 | ||
1410 | if (r < 0) | |
1411 | goto fail; | |
1412 | ||
e537352b | 1413 | if (!(MOUNT(u)->where = strdup(where))) { |
07b0b134 ML |
1414 | r = -ENOMEM; |
1415 | goto fail; | |
1416 | } | |
f50e0a01 | 1417 | |
f94ea366 | 1418 | unit_add_to_load_queue(u); |
b08d03ff LP |
1419 | } else { |
1420 | delete = false; | |
1421 | free(e); | |
1422 | } | |
1423 | ||
e537352b LP |
1424 | if (!(w = strdup(what)) || |
1425 | !(o = strdup(options)) || | |
1426 | !(f = strdup(fstype))) { | |
1427 | r = -ENOMEM; | |
1428 | goto fail; | |
1429 | } | |
1430 | ||
1431 | if (from_proc_self_mountinfo) { | |
4e85aff4 | 1432 | p = &MOUNT(u)->parameters_proc_self_mountinfo; |
e537352b LP |
1433 | |
1434 | if (set_flags) { | |
1435 | MOUNT(u)->is_mounted = true; | |
1436 | MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
4e85aff4 | 1437 | MOUNT(u)->just_changed = !streq_ptr(p->options, o); |
e537352b | 1438 | } |
ef734fd6 | 1439 | |
f50e0a01 | 1440 | MOUNT(u)->from_proc_self_mountinfo = true; |
ef734fd6 | 1441 | } else { |
4e85aff4 | 1442 | p = &MOUNT(u)->parameters_etc_fstab; |
f50e0a01 | 1443 | MOUNT(u)->from_etc_fstab = true; |
ef734fd6 | 1444 | } |
f50e0a01 | 1445 | |
4e85aff4 LP |
1446 | free(p->what); |
1447 | p->what = w; | |
b08d03ff | 1448 | |
4e85aff4 LP |
1449 | free(p->options); |
1450 | p->options = o; | |
e537352b | 1451 | |
4e85aff4 LP |
1452 | free(p->fstype); |
1453 | p->fstype = f; | |
b08d03ff | 1454 | |
9fff8a1f LP |
1455 | p->passno = passno; |
1456 | ||
c1e1601e LP |
1457 | unit_add_to_dbus_queue(u); |
1458 | ||
b08d03ff LP |
1459 | return 0; |
1460 | ||
1461 | fail: | |
e537352b LP |
1462 | free(w); |
1463 | free(o); | |
1464 | free(f); | |
1465 | ||
b08d03ff LP |
1466 | if (delete && u) |
1467 | unit_free(u); | |
1468 | ||
4e85aff4 | 1469 | return r; |
b08d03ff LP |
1470 | } |
1471 | ||
07b0b134 ML |
1472 | static int mount_find_pri(char *options) { |
1473 | char *end, *pri; | |
1474 | unsigned long r; | |
1475 | ||
1476 | if (!(pri = mount_test_option(options, "pri="))) | |
1477 | return 0; | |
1478 | ||
1479 | pri += 4; | |
1480 | ||
1481 | errno = 0; | |
1482 | r = strtoul(pri, &end, 10); | |
1483 | ||
1484 | if (errno != 0) | |
1485 | return -errno; | |
1486 | ||
1487 | if (end == pri || (*end != ',' && *end != 0)) | |
1488 | return -EINVAL; | |
1489 | ||
1490 | return (int) r; | |
1491 | } | |
1492 | ||
e537352b | 1493 | static int mount_load_etc_fstab(Manager *m) { |
b08d03ff | 1494 | FILE *f; |
60b912f6 | 1495 | int r = 0; |
b08d03ff LP |
1496 | struct mntent* me; |
1497 | ||
1498 | assert(m); | |
1499 | ||
1500 | errno = 0; | |
1501 | if (!(f = setmntent("/etc/fstab", "r"))) | |
1502 | return -errno; | |
1503 | ||
1504 | while ((me = getmntent(f))) { | |
1505 | char *where, *what; | |
60b912f6 | 1506 | int k; |
b08d03ff LP |
1507 | |
1508 | if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) { | |
1509 | r = -ENOMEM; | |
1510 | goto finish; | |
1511 | } | |
1512 | ||
1513 | if (!(where = strdup(me->mnt_dir))) { | |
1514 | free(what); | |
1515 | r = -ENOMEM; | |
1516 | goto finish; | |
1517 | } | |
1518 | ||
1519 | if (what[0] == '/') | |
1520 | path_kill_slashes(what); | |
1521 | ||
1522 | if (where[0] == '/') | |
1523 | path_kill_slashes(where); | |
1524 | ||
07b0b134 ML |
1525 | if (streq(me->mnt_type, "swap")) { |
1526 | int pri; | |
1527 | ||
1528 | if ((pri = mount_find_pri(me->mnt_opts)) < 0) | |
60b912f6 | 1529 | k = pri; |
07b0b134 | 1530 | else |
60b912f6 | 1531 | k = swap_add_one(m, |
07b0b134 | 1532 | what, |
60b912f6 | 1533 | NULL, |
07b0b134 | 1534 | pri, |
155da457 | 1535 | !!mount_test_option(me->mnt_opts, "noauto"), |
173a8d04 | 1536 | !!mount_test_option(me->mnt_opts, "nofail"), |
4e85aff4 | 1537 | !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"), |
07b0b134 ML |
1538 | false); |
1539 | } else | |
9fff8a1f | 1540 | k = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, me->mnt_passno, false, false); |
07b0b134 | 1541 | |
b08d03ff LP |
1542 | free(what); |
1543 | free(where); | |
1544 | ||
1545 | if (r < 0) | |
60b912f6 | 1546 | r = k; |
b08d03ff LP |
1547 | } |
1548 | ||
b08d03ff LP |
1549 | finish: |
1550 | ||
1551 | endmntent(f); | |
1552 | return r; | |
1553 | } | |
1554 | ||
ef734fd6 | 1555 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
60b912f6 | 1556 | int r = 0; |
1ddff895 | 1557 | unsigned i; |
a2e0f3d3 | 1558 | char *device, *path, *options, *options2, *fstype, *d, *p, *o; |
b08d03ff LP |
1559 | |
1560 | assert(m); | |
1561 | ||
ef734fd6 | 1562 | rewind(m->proc_self_mountinfo); |
b08d03ff | 1563 | |
1ddff895 | 1564 | for (i = 1;; i++) { |
b08d03ff | 1565 | int k; |
e537352b | 1566 | |
a2e0f3d3 | 1567 | device = path = options = options2 = fstype = d = p = o = NULL; |
b08d03ff | 1568 | |
ef734fd6 | 1569 | if ((k = fscanf(m->proc_self_mountinfo, |
b08d03ff LP |
1570 | "%*s " /* (1) mount id */ |
1571 | "%*s " /* (2) parent id */ | |
1572 | "%*s " /* (3) major:minor */ | |
1573 | "%*s " /* (4) root */ | |
1574 | "%ms " /* (5) mount point */ | |
e537352b | 1575 | "%ms" /* (6) mount options */ |
b08d03ff | 1576 | "%*[^-]" /* (7) optional fields */ |
c899f8c6 | 1577 | "- " /* (8) separator */ |
e537352b | 1578 | "%ms " /* (9) file system type */ |
ef734fd6 | 1579 | "%ms" /* (10) mount source */ |
a2e0f3d3 | 1580 | "%ms" /* (11) mount options 2 */ |
ef734fd6 | 1581 | "%*[^\n]", /* some rubbish at the end */ |
b08d03ff | 1582 | &path, |
e537352b LP |
1583 | &options, |
1584 | &fstype, | |
a2e0f3d3 LP |
1585 | &device, |
1586 | &options2)) != 5) { | |
b08d03ff | 1587 | |
ef734fd6 LP |
1588 | if (k == EOF) |
1589 | break; | |
b08d03ff | 1590 | |
1ddff895 FF |
1591 | log_warning("Failed to parse /proc/self/mountinfo:%u.", i); |
1592 | goto clean_up; | |
b08d03ff LP |
1593 | } |
1594 | ||
a2e0f3d3 LP |
1595 | if (asprintf(&o, "%s,%s", options, options2) < 0) { |
1596 | r = -ENOMEM; | |
1597 | goto finish; | |
1598 | } | |
1599 | ||
e537352b LP |
1600 | if (!(d = cunescape(device)) || |
1601 | !(p = cunescape(path))) { | |
1602 | r = -ENOMEM; | |
1603 | goto finish; | |
b08d03ff | 1604 | } |
b08d03ff | 1605 | |
9fff8a1f | 1606 | if ((k = mount_add_one(m, d, p, o, fstype, 0, true, set_flags)) < 0) |
60b912f6 | 1607 | r = k; |
b08d03ff | 1608 | |
1ddff895 | 1609 | clean_up: |
e537352b LP |
1610 | free(device); |
1611 | free(path); | |
1612 | free(options); | |
a2e0f3d3 | 1613 | free(options2); |
e537352b | 1614 | free(fstype); |
b08d03ff LP |
1615 | free(d); |
1616 | free(p); | |
a2e0f3d3 | 1617 | free(o); |
b08d03ff LP |
1618 | } |
1619 | ||
e537352b LP |
1620 | finish: |
1621 | free(device); | |
1622 | free(path); | |
1623 | free(options); | |
a2e0f3d3 | 1624 | free(options2); |
e537352b LP |
1625 | free(fstype); |
1626 | free(d); | |
1627 | free(p); | |
a2e0f3d3 | 1628 | free(o); |
e537352b LP |
1629 | |
1630 | return r; | |
1631 | } | |
1632 | ||
1633 | static void mount_shutdown(Manager *m) { | |
1634 | assert(m); | |
1635 | ||
a16e1123 | 1636 | if (m->proc_self_mountinfo) { |
e537352b | 1637 | fclose(m->proc_self_mountinfo); |
a16e1123 LP |
1638 | m->proc_self_mountinfo = NULL; |
1639 | } | |
b08d03ff LP |
1640 | } |
1641 | ||
1642 | static int mount_enumerate(Manager *m) { | |
1643 | int r; | |
ef734fd6 | 1644 | struct epoll_event ev; |
b08d03ff LP |
1645 | assert(m); |
1646 | ||
a16e1123 LP |
1647 | if (!m->proc_self_mountinfo) { |
1648 | if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"))) | |
1649 | return -errno; | |
ef734fd6 | 1650 | |
a16e1123 LP |
1651 | m->mount_watch.type = WATCH_MOUNT; |
1652 | m->mount_watch.fd = fileno(m->proc_self_mountinfo); | |
ef734fd6 | 1653 | |
a16e1123 | 1654 | zero(ev); |
4e434314 | 1655 | ev.events = EPOLLPRI; |
a16e1123 | 1656 | ev.data.ptr = &m->mount_watch; |
ef734fd6 | 1657 | |
a16e1123 LP |
1658 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0) |
1659 | return -errno; | |
1660 | } | |
ef734fd6 | 1661 | |
e537352b | 1662 | if ((r = mount_load_etc_fstab(m)) < 0) |
b08d03ff LP |
1663 | goto fail; |
1664 | ||
ef734fd6 | 1665 | if ((r = mount_load_proc_self_mountinfo(m, false)) < 0) |
b08d03ff LP |
1666 | goto fail; |
1667 | ||
1668 | return 0; | |
1669 | ||
1670 | fail: | |
1671 | mount_shutdown(m); | |
1672 | return r; | |
5cb5a6ff LP |
1673 | } |
1674 | ||
ef734fd6 LP |
1675 | void mount_fd_event(Manager *m, int events) { |
1676 | Meta *meta; | |
1677 | int r; | |
1678 | ||
1679 | assert(m); | |
4e434314 | 1680 | assert(events & EPOLLPRI); |
ef734fd6 LP |
1681 | |
1682 | /* The manager calls this for every fd event happening on the | |
1683 | * /proc/self/mountinfo file, which informs us about mounting | |
1684 | * table changes */ | |
1685 | ||
1686 | if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) { | |
e364ad06 | 1687 | log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r)); |
e537352b LP |
1688 | |
1689 | /* Reset flags, just in case, for later calls */ | |
ab5c3e3f | 1690 | LIST_FOREACH(units_by_type, meta, m->units_by_type[UNIT_MOUNT]) { |
e537352b LP |
1691 | Mount *mount = (Mount*) meta; |
1692 | ||
1693 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1694 | } | |
1695 | ||
ef734fd6 LP |
1696 | return; |
1697 | } | |
1698 | ||
1699 | manager_dispatch_load_queue(m); | |
1700 | ||
ab5c3e3f | 1701 | LIST_FOREACH(units_by_type, meta, m->units_by_type[UNIT_MOUNT]) { |
ef734fd6 LP |
1702 | Mount *mount = (Mount*) meta; |
1703 | ||
e537352b LP |
1704 | if (!mount->is_mounted) { |
1705 | /* This has just been unmounted. */ | |
1706 | ||
ef734fd6 | 1707 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1708 | |
1709 | switch (mount->state) { | |
1710 | ||
1711 | case MOUNT_MOUNTED: | |
1712 | mount_enter_dead(mount, true); | |
1713 | break; | |
1714 | ||
1715 | default: | |
1716 | mount_set_state(mount, mount->state); | |
1717 | break; | |
1718 | ||
1719 | } | |
1720 | ||
1721 | } else if (mount->just_mounted || mount->just_changed) { | |
1722 | ||
60b912f6 | 1723 | /* New or changed mount entry */ |
e537352b LP |
1724 | |
1725 | switch (mount->state) { | |
1726 | ||
1727 | case MOUNT_DEAD: | |
fdf20a31 | 1728 | case MOUNT_FAILED: |
e537352b LP |
1729 | mount_enter_mounted(mount, true); |
1730 | break; | |
1731 | ||
1732 | case MOUNT_MOUNTING: | |
8d567588 | 1733 | mount_enter_mounting_done(mount); |
e537352b LP |
1734 | break; |
1735 | ||
1736 | default: | |
1737 | /* Nothing really changed, but let's | |
1738 | * issue an notification call | |
1739 | * nonetheless, in case somebody is | |
1740 | * waiting for this. (e.g. file system | |
1741 | * ro/rw remounts.) */ | |
1742 | mount_set_state(mount, mount->state); | |
1743 | break; | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | /* Reset the flags for later calls */ | |
1748 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1749 | } | |
1750 | } | |
1751 | ||
fdf20a31 | 1752 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1753 | Mount *m = MOUNT(u); |
1754 | ||
1755 | assert(m); | |
1756 | ||
fdf20a31 | 1757 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1758 | mount_set_state(m, MOUNT_DEAD); |
1759 | ||
1760 | m->failure = false; | |
1761 | } | |
1762 | ||
8a0867d6 LP |
1763 | static int mount_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { |
1764 | Mount *m = MOUNT(u); | |
1765 | int r = 0; | |
1766 | Set *pid_set = NULL; | |
1767 | ||
1768 | assert(m); | |
1769 | ||
1770 | if (who == KILL_MAIN) { | |
1771 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Mount units have no main processes"); | |
a17204af | 1772 | return -ESRCH; |
8a0867d6 LP |
1773 | } |
1774 | ||
1775 | if (m->control_pid <= 0 && who == KILL_CONTROL) { | |
1776 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
a17204af | 1777 | return -ESRCH; |
8a0867d6 LP |
1778 | } |
1779 | ||
3611581e LP |
1780 | if (who == KILL_CONTROL || who == KILL_ALL) |
1781 | if (m->control_pid > 0) | |
1782 | if (kill(m->control_pid, signo) < 0) | |
1783 | r = -errno; | |
8a0867d6 | 1784 | |
3611581e | 1785 | if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { |
8a0867d6 LP |
1786 | int q; |
1787 | ||
1788 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) | |
1789 | return -ENOMEM; | |
1790 | ||
1791 | /* Exclude the control pid from being killed via the cgroup */ | |
1792 | if (m->control_pid > 0) | |
1793 | if ((q = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) { | |
1794 | r = q; | |
1795 | goto finish; | |
1796 | } | |
1797 | ||
430c18ed | 1798 | if ((q = cgroup_bonding_kill_list(m->meta.cgroup_bondings, signo, false, pid_set)) < 0) |
3611581e | 1799 | if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
8a0867d6 LP |
1800 | r = q; |
1801 | } | |
1802 | ||
1803 | finish: | |
1804 | if (pid_set) | |
1805 | set_free(pid_set); | |
1806 | ||
1807 | return r; | |
1808 | } | |
1809 | ||
a16e1123 LP |
1810 | static const char* const mount_state_table[_MOUNT_STATE_MAX] = { |
1811 | [MOUNT_DEAD] = "dead", | |
1812 | [MOUNT_MOUNTING] = "mounting", | |
1813 | [MOUNT_MOUNTING_DONE] = "mounting-done", | |
1814 | [MOUNT_MOUNTED] = "mounted", | |
1815 | [MOUNT_REMOUNTING] = "remounting", | |
1816 | [MOUNT_UNMOUNTING] = "unmounting", | |
1817 | [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm", | |
1818 | [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill", | |
1819 | [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm", | |
1820 | [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill", | |
1821 | [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm", | |
1822 | [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill", | |
fdf20a31 | 1823 | [MOUNT_FAILED] = "failed" |
a16e1123 LP |
1824 | }; |
1825 | ||
1826 | DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState); | |
1827 | ||
1828 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { | |
1829 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1830 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1831 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1832 | }; | |
1833 | ||
1834 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1835 | ||
87f0e418 | 1836 | const UnitVTable mount_vtable = { |
5cb5a6ff | 1837 | .suffix = ".mount", |
f975e971 LP |
1838 | .sections = |
1839 | "Unit\0" | |
1840 | "Mount\0" | |
1841 | "Install\0", | |
5cb5a6ff | 1842 | |
e537352b | 1843 | .no_alias = true, |
9e2f7c11 | 1844 | .no_instances = true, |
9e58ff9c | 1845 | .show_status = true, |
e537352b LP |
1846 | |
1847 | .init = mount_init, | |
1848 | .load = mount_load, | |
034c6ed7 | 1849 | .done = mount_done, |
e537352b | 1850 | |
f50e0a01 LP |
1851 | .coldplug = mount_coldplug, |
1852 | ||
034c6ed7 | 1853 | .dump = mount_dump, |
5cb5a6ff | 1854 | |
e537352b LP |
1855 | .start = mount_start, |
1856 | .stop = mount_stop, | |
1857 | .reload = mount_reload, | |
1858 | ||
8a0867d6 LP |
1859 | .kill = mount_kill, |
1860 | ||
a16e1123 LP |
1861 | .serialize = mount_serialize, |
1862 | .deserialize_item = mount_deserialize_item, | |
1863 | ||
f50e0a01 | 1864 | .active_state = mount_active_state, |
10a94420 | 1865 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1866 | |
701cc384 LP |
1867 | .check_gc = mount_check_gc, |
1868 | ||
e537352b LP |
1869 | .sigchld_event = mount_sigchld_event, |
1870 | .timer_event = mount_timer_event, | |
1871 | ||
fdf20a31 | 1872 | .reset_failed = mount_reset_failed, |
5632e374 | 1873 | |
c4e2ceae | 1874 | .bus_interface = "org.freedesktop.systemd1.Mount", |
4139c1b2 | 1875 | .bus_message_handler = bus_mount_message_handler, |
c4e2ceae | 1876 | .bus_invalidating_properties = bus_mount_invalidating_properties, |
4139c1b2 | 1877 | |
f50e0a01 LP |
1878 | .enumerate = mount_enumerate, |
1879 | .shutdown = mount_shutdown | |
5cb5a6ff | 1880 | }; |