]>
Commit | Line | Data |
---|---|---|
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 | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
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 | 33 | #include "strv.h" |
49e942b2 | 34 | #include "mkdir.h" |
9eb977db | 35 | #include "path-util.h" |
e537352b | 36 | #include "mount-setup.h" |
9e2f7c11 | 37 | #include "unit-name.h" |
4139c1b2 | 38 | #include "dbus-mount.h" |
514f4ef5 | 39 | #include "special.h" |
8a0867d6 | 40 | #include "bus-errors.h" |
9a57c629 | 41 | #include "exit-status.h" |
f6a6225e | 42 | #include "def.h" |
5cb5a6ff | 43 | |
f50e0a01 LP |
44 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
45 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
46 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 47 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 48 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 49 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 50 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
e537352b LP |
51 | [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
52 | [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
032ff4af LP |
53 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
54 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
55 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
56 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 57 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 58 | }; |
5cb5a6ff | 59 | |
a16e1123 LP |
60 | static void mount_init(Unit *u) { |
61 | Mount *m = MOUNT(u); | |
5cb5a6ff | 62 | |
a16e1123 | 63 | assert(u); |
ac155bb8 | 64 | assert(u->load_state == UNIT_STUB); |
a16e1123 LP |
65 | |
66 | m->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
3e5235b0 LP |
67 | m->directory_mode = 0755; |
68 | ||
c3686083 | 69 | exec_context_init(&m->exec_context); |
d893269d | 70 | |
6b1dc2bd LP |
71 | if (unit_has_name(u, "-.mount")) { |
72 | /* Don't allow start/stop for root directory */ | |
73 | UNIT(m)->refuse_manual_start = true; | |
74 | UNIT(m)->refuse_manual_stop = true; | |
75 | } else { | |
76 | /* The stdio/kmsg bridge socket is on /, in order to avoid a | |
77 | * dep loop, don't use kmsg logging for -.mount */ | |
ac155bb8 MS |
78 | m->exec_context.std_output = u->manager->default_std_output; |
79 | m->exec_context.std_error = u->manager->default_std_error; | |
f6cebb3b | 80 | } |
c3686083 | 81 | |
a16e1123 LP |
82 | /* We need to make sure that /bin/mount is always called in |
83 | * the same process group as us, so that the autofs kernel | |
84 | * side doesn't send us another mount request while we are | |
85 | * already trying to comply its last one. */ | |
74922904 | 86 | m->exec_context.same_pgrp = true; |
8d567588 | 87 | |
a16e1123 LP |
88 | m->timer_watch.type = WATCH_INVALID; |
89 | ||
90 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
c8f4d764 | 91 | |
1124fe6f | 92 | UNIT(m)->ignore_on_isolate = true; |
8d567588 LP |
93 | } |
94 | ||
a16e1123 | 95 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
96 | assert(m); |
97 | ||
98 | if (m->control_pid <= 0) | |
99 | return; | |
100 | ||
101 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
102 | m->control_pid = 0; | |
103 | } | |
104 | ||
e537352b LP |
105 | static void mount_parameters_done(MountParameters *p) { |
106 | assert(p); | |
107 | ||
108 | free(p->what); | |
109 | free(p->options); | |
110 | free(p->fstype); | |
111 | ||
112 | p->what = p->options = p->fstype = NULL; | |
113 | } | |
114 | ||
87f0e418 | 115 | static void mount_done(Unit *u) { |
ef734fd6 | 116 | Mount *m = MOUNT(u); |
034c6ed7 | 117 | |
ef734fd6 | 118 | assert(m); |
034c6ed7 | 119 | |
e537352b LP |
120 | free(m->where); |
121 | m->where = NULL; | |
f50e0a01 | 122 | |
e537352b LP |
123 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
124 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 125 | |
e537352b LP |
126 | exec_context_done(&m->exec_context); |
127 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
128 | m->control_command = NULL; | |
f50e0a01 | 129 | |
a16e1123 | 130 | mount_unwatch_control_pid(m); |
f50e0a01 | 131 | |
e537352b | 132 | unit_unwatch_timer(u, &m->timer_watch); |
f50e0a01 LP |
133 | } |
134 | ||
6b1dc2bd | 135 | static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
136 | assert(m); |
137 | ||
138 | if (m->from_fragment) | |
139 | return &m->parameters_fragment; | |
cb39ed3f LP |
140 | |
141 | return NULL; | |
142 | } | |
143 | ||
144 | static MountParameters* get_mount_parameters(Mount *m) { | |
145 | assert(m); | |
146 | ||
147 | if (m->from_proc_self_mountinfo) | |
148 | return &m->parameters_proc_self_mountinfo; | |
149 | ||
6b1dc2bd | 150 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
151 | } |
152 | ||
6e2ef85b | 153 | static int mount_add_mount_links(Mount *m) { |
ac155bb8 | 154 | Unit *other; |
b08d03ff | 155 | int r; |
5c78d8e2 | 156 | MountParameters *pm; |
b08d03ff | 157 | |
6e2ef85b | 158 | assert(m); |
b08d03ff | 159 | |
6b1dc2bd | 160 | pm = get_mount_parameters_fragment(m); |
5c78d8e2 | 161 | |
6e2ef85b LP |
162 | /* Adds in links to other mount points that might lie below or |
163 | * above us in the hierarchy */ | |
e537352b | 164 | |
1124fe6f | 165 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_MOUNT]) { |
595ed347 | 166 | Mount *n = MOUNT(other); |
5c78d8e2 | 167 | MountParameters *pn; |
07b0b134 | 168 | |
6e2ef85b LP |
169 | if (n == m) |
170 | continue; | |
b08d03ff | 171 | |
1124fe6f | 172 | if (UNIT(n)->load_state != UNIT_LOADED) |
6e2ef85b | 173 | continue; |
b08d03ff | 174 | |
6b1dc2bd | 175 | pn = get_mount_parameters_fragment(n); |
5c78d8e2 | 176 | |
6e2ef85b | 177 | if (path_startswith(m->where, n->where)) { |
b08d03ff | 178 | |
6e2ef85b LP |
179 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) |
180 | return r; | |
b08d03ff | 181 | |
cb39ed3f | 182 | if (pn) |
6e2ef85b LP |
183 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
184 | return r; | |
b08d03ff | 185 | |
6e2ef85b | 186 | } else if (path_startswith(n->where, m->where)) { |
b08d03ff | 187 | |
5c78d8e2 LP |
188 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) |
189 | return r; | |
190 | ||
cb39ed3f | 191 | if (pm) |
5c78d8e2 LP |
192 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
193 | return r; | |
194 | ||
9631c090 | 195 | } else if (pm && pm->what && path_startswith(pm->what, n->where)) { |
5c78d8e2 LP |
196 | |
197 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) | |
6e2ef85b LP |
198 | return r; |
199 | ||
cb39ed3f LP |
200 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
201 | return r; | |
5c78d8e2 | 202 | |
9631c090 | 203 | } else if (pn && pn->what && path_startswith(pn->what, m->where)) { |
5c78d8e2 LP |
204 | |
205 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) | |
206 | return r; | |
207 | ||
cb39ed3f LP |
208 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
209 | return r; | |
6e2ef85b LP |
210 | } |
211 | } | |
b08d03ff LP |
212 | |
213 | return 0; | |
214 | } | |
215 | ||
6e2ef85b | 216 | static int mount_add_swap_links(Mount *m) { |
ac155bb8 | 217 | Unit *other; |
b08d03ff LP |
218 | int r; |
219 | ||
6e2ef85b | 220 | assert(m); |
b08d03ff | 221 | |
1124fe6f | 222 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SWAP]) |
595ed347 | 223 | if ((r = swap_add_one_mount_link(SWAP(other), m)) < 0) |
6e2ef85b | 224 | return r; |
b08d03ff | 225 | |
6e2ef85b LP |
226 | return 0; |
227 | } | |
b08d03ff | 228 | |
01f78473 | 229 | static int mount_add_path_links(Mount *m) { |
ac155bb8 | 230 | Unit *other; |
01f78473 LP |
231 | int r; |
232 | ||
233 | assert(m); | |
234 | ||
1124fe6f | 235 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_PATH]) |
595ed347 | 236 | if ((r = path_add_one_mount_link(PATH(other), m)) < 0) |
01f78473 LP |
237 | return r; |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
6e2ef85b | 242 | static int mount_add_automount_links(Mount *m) { |
ac155bb8 | 243 | Unit *other; |
6e2ef85b | 244 | int r; |
e537352b | 245 | |
6e2ef85b | 246 | assert(m); |
b08d03ff | 247 | |
1124fe6f | 248 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_AUTOMOUNT]) |
595ed347 | 249 | if ((r = automount_add_one_mount_link(AUTOMOUNT(other), m)) < 0) |
6e2ef85b | 250 | return r; |
b08d03ff | 251 | |
6e2ef85b LP |
252 | return 0; |
253 | } | |
b08d03ff | 254 | |
6e2ef85b | 255 | static int mount_add_socket_links(Mount *m) { |
ac155bb8 | 256 | Unit *other; |
6e2ef85b | 257 | int r; |
b08d03ff | 258 | |
6e2ef85b | 259 | assert(m); |
b08d03ff | 260 | |
1124fe6f | 261 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SOCKET]) |
595ed347 | 262 | if ((r = socket_add_one_mount_link(SOCKET(other), m)) < 0) |
6e2ef85b | 263 | return r; |
b08d03ff LP |
264 | |
265 | return 0; | |
266 | } | |
267 | ||
7c8fa05c LP |
268 | static int mount_add_requires_mounts_links(Mount *m) { |
269 | Unit *other; | |
270 | int r; | |
271 | ||
272 | assert(m); | |
273 | ||
274 | LIST_FOREACH(has_requires_mounts_for, other, UNIT(m)->manager->has_requires_mounts_for) { | |
275 | r = unit_add_one_mount_link(other, m); | |
276 | if (r < 0) | |
277 | return r; | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
07b0b134 | 283 | static char* mount_test_option(const char *haystack, const char *needle) { |
e537352b LP |
284 | struct mntent me; |
285 | ||
286 | assert(needle); | |
287 | ||
288 | /* Like glibc's hasmntopt(), but works on a string, not a | |
289 | * struct mntent */ | |
290 | ||
291 | if (!haystack) | |
6a39419f | 292 | return NULL; |
e537352b LP |
293 | |
294 | zero(me); | |
295 | me.mnt_opts = (char*) haystack; | |
296 | ||
07b0b134 | 297 | return hasmntopt(&me, needle); |
e537352b LP |
298 | } |
299 | ||
cb39ed3f LP |
300 | static bool mount_is_network(MountParameters *p) { |
301 | assert(p); | |
302 | ||
303 | if (mount_test_option(p->options, "_netdev")) | |
304 | return true; | |
305 | ||
306 | if (p->fstype && fstype_is_network(p->fstype)) | |
307 | return true; | |
308 | ||
309 | return false; | |
310 | } | |
311 | ||
312 | static bool mount_is_bind(MountParameters *p) { | |
313 | assert(p); | |
314 | ||
315 | if (mount_test_option(p->options, "bind")) | |
316 | return true; | |
317 | ||
318 | if (p->fstype && streq(p->fstype, "bind")) | |
319 | return true; | |
320 | ||
321 | return false; | |
322 | } | |
323 | ||
324 | static bool needs_quota(MountParameters *p) { | |
325 | assert(p); | |
326 | ||
327 | if (mount_is_network(p)) | |
328 | return false; | |
329 | ||
330 | if (mount_is_bind(p)) | |
331 | return false; | |
332 | ||
333 | return mount_test_option(p->options, "usrquota") || | |
d3354f66 LP |
334 | mount_test_option(p->options, "grpquota") || |
335 | mount_test_option(p->options, "quota") || | |
336 | mount_test_option(p->options, "usrjquota") || | |
337 | mount_test_option(p->options, "grpjquota"); | |
cb39ed3f LP |
338 | } |
339 | ||
173a8d04 LP |
340 | static int mount_add_device_links(Mount *m) { |
341 | MountParameters *p; | |
9fff8a1f | 342 | int r; |
173a8d04 LP |
343 | |
344 | assert(m); | |
345 | ||
6b1dc2bd LP |
346 | p = get_mount_parameters_fragment(m); |
347 | if (!p) | |
173a8d04 LP |
348 | return 0; |
349 | ||
9fff8a1f | 350 | if (!p->what) |
173a8d04 | 351 | return 0; |
5c78d8e2 | 352 | |
155da457 | 353 | if (!mount_is_bind(p) && |
6b1dc2bd LP |
354 | !path_equal(m->where, "/")) { |
355 | r = unit_add_node_link(UNIT(m), p->what, false); | |
356 | if (r < 0) | |
9fff8a1f LP |
357 | return r; |
358 | } | |
359 | ||
491ad5dc | 360 | if (p->passno > 0 && |
ff2e0f05 | 361 | !mount_is_bind(p) && |
6b1dc2bd LP |
362 | !path_equal(m->where, "/") && |
363 | UNIT(m)->manager->running_as == MANAGER_SYSTEM) { | |
9fff8a1f LP |
364 | char *name; |
365 | Unit *fsck; | |
366 | /* Let's add in the fsck service */ | |
173a8d04 | 367 | |
a9e1f5ec | 368 | /* aka SPECIAL_FSCK_SERVICE */ |
93a1d735 | 369 | name = unit_name_from_path_instance("systemd-fsck", p->what, ".service"); |
6b1dc2bd | 370 | if (!name) |
9fff8a1f LP |
371 | return -ENOMEM; |
372 | ||
6b1dc2bd LP |
373 | r = manager_load_unit_prepare(UNIT(m)->manager, name, NULL, NULL, &fsck); |
374 | if (r < 0) { | |
9fff8a1f LP |
375 | log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); |
376 | free(name); | |
377 | return r; | |
378 | } | |
9fff8a1f LP |
379 | free(name); |
380 | ||
381 | SERVICE(fsck)->fsck_passno = p->passno; | |
382 | ||
6b1dc2bd LP |
383 | r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true); |
384 | if (r < 0) | |
9fff8a1f LP |
385 | return r; |
386 | } | |
387 | ||
388 | return 0; | |
173a8d04 LP |
389 | } |
390 | ||
6b1dc2bd LP |
391 | static int mount_add_quota_links(Mount *m) { |
392 | int r; | |
393 | MountParameters *p; | |
394 | ||
395 | assert(m); | |
396 | ||
397 | if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) | |
398 | return 0; | |
399 | ||
400 | p = get_mount_parameters_fragment(m); | |
401 | if (!p) | |
402 | return 0; | |
403 | ||
404 | if (!needs_quota(p)) | |
405 | return 0; | |
406 | ||
407 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true); | |
408 | if (r < 0) | |
409 | return r; | |
410 | ||
411 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true); | |
412 | if (r < 0) | |
413 | return r; | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
2edd4434 LP |
418 | static int mount_add_default_dependencies(Mount *m) { |
419 | int r; | |
9ddc4a26 | 420 | MountParameters *p; |
6b1dc2bd | 421 | const char *after; |
2edd4434 LP |
422 | |
423 | assert(m); | |
424 | ||
1124fe6f | 425 | if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) |
9ddc4a26 | 426 | return 0; |
cb39ed3f | 427 | |
6b1dc2bd LP |
428 | p = get_mount_parameters_fragment(m); |
429 | if (!p) | |
430 | return 0; | |
2edd4434 | 431 | |
6b1dc2bd LP |
432 | if (path_equal(m->where, "/")) |
433 | return 0; | |
434 | ||
435 | if (mount_is_network(p)) | |
436 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
437 | else | |
438 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
439 | ||
440 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, after, NULL, true); | |
441 | if (r < 0) | |
442 | return r; | |
443 | ||
444 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); | |
445 | if (r < 0) | |
446 | return r; | |
2edd4434 LP |
447 | |
448 | return 0; | |
449 | } | |
450 | ||
f4c05147 | 451 | static int mount_fix_timeouts(Mount *m) { |
8024c3a7 LP |
452 | MountParameters *p; |
453 | const char *timeout = NULL; | |
454 | Unit *other; | |
455 | Iterator i; | |
456 | usec_t u; | |
f4c05147 LP |
457 | char *t; |
458 | int r; | |
8024c3a7 LP |
459 | |
460 | assert(m); | |
461 | ||
6b1dc2bd LP |
462 | p = get_mount_parameters_fragment(m); |
463 | if (!p) | |
f4c05147 | 464 | return 0; |
8024c3a7 LP |
465 | |
466 | /* Allow configuration how long we wait for a device that | |
467 | * backs a mount point to show up. This is useful to support | |
468 | * endless device timeouts for devices that show up only after | |
469 | * user input, like crypto devices. */ | |
470 | ||
471 | if ((timeout = mount_test_option(p->options, "comment=systemd.device-timeout"))) | |
472 | timeout += 31; | |
92a39ae1 | 473 | else if ((timeout = mount_test_option(p->options, "x-systemd.device-timeout"))) |
8024c3a7 LP |
474 | timeout += 25; |
475 | else | |
f4c05147 LP |
476 | return 0; |
477 | ||
478 | t = strndup(timeout, strcspn(timeout, ",;" WHITESPACE)); | |
479 | if (!t) | |
480 | return -ENOMEM; | |
8024c3a7 | 481 | |
f4c05147 LP |
482 | r = parse_usec(t, &u); |
483 | free(t); | |
484 | ||
485 | if (r < 0) { | |
8024c3a7 | 486 | log_warning("Failed to parse timeout for %s, ignoring: %s", m->where, timeout); |
f4c05147 | 487 | return r; |
8024c3a7 LP |
488 | } |
489 | ||
1124fe6f | 490 | SET_FOREACH(other, UNIT(m)->dependencies[UNIT_AFTER], i) { |
ac155bb8 | 491 | if (other->type != UNIT_DEVICE) |
8024c3a7 LP |
492 | continue; |
493 | ||
ac155bb8 | 494 | other->job_timeout = u; |
8024c3a7 | 495 | } |
f4c05147 LP |
496 | |
497 | return 0; | |
8024c3a7 LP |
498 | } |
499 | ||
8d567588 LP |
500 | static int mount_verify(Mount *m) { |
501 | bool b; | |
502 | char *e; | |
503 | assert(m); | |
504 | ||
1124fe6f | 505 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
506 | return 0; |
507 | ||
6b1dc2bd | 508 | if (!m->from_fragment && !m->from_proc_self_mountinfo) |
8cbef760 LP |
509 | return -ENOENT; |
510 | ||
a16e1123 | 511 | if (!(e = unit_name_from_path(m->where, ".mount"))) |
8d567588 LP |
512 | return -ENOMEM; |
513 | ||
514 | b = unit_has_name(UNIT(m), e); | |
515 | free(e); | |
516 | ||
517 | if (!b) { | |
1124fe6f | 518 | log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->id); |
8d567588 LP |
519 | return -EINVAL; |
520 | } | |
521 | ||
33ff02c9 LP |
522 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
523 | log_error("Cannot create mount unit for API file system %s. Refusing.", m->where); | |
524 | return -EINVAL; | |
525 | } | |
526 | ||
1124fe6f MS |
527 | if (UNIT(m)->fragment_path && !m->parameters_fragment.what) { |
528 | log_error("%s's What setting is missing. Refusing.", UNIT(m)->id); | |
4e85aff4 LP |
529 | return -EBADMSG; |
530 | } | |
531 | ||
2e22afe9 | 532 | if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) { |
1124fe6f | 533 | log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(m)->id); |
4d0e5dbd LP |
534 | return -EINVAL; |
535 | } | |
536 | ||
8d567588 LP |
537 | return 0; |
538 | } | |
539 | ||
1a4ac875 MS |
540 | static int mount_add_extras(Mount *m) { |
541 | Unit *u = UNIT(m); | |
e537352b LP |
542 | int r; |
543 | ||
1a4ac875 MS |
544 | r = unit_add_exec_dependencies(u, &m->exec_context); |
545 | if (r < 0) | |
e537352b LP |
546 | return r; |
547 | ||
1a4ac875 MS |
548 | if (UNIT(m)->fragment_path) |
549 | m->from_fragment = true; | |
e537352b | 550 | |
1a4ac875 MS |
551 | if (!m->where) { |
552 | m->where = unit_name_to_path(u->id); | |
a16e1123 | 553 | if (!m->where) |
1a4ac875 MS |
554 | return -ENOMEM; |
555 | } | |
a16e1123 | 556 | |
1a4ac875 | 557 | path_kill_slashes(m->where); |
e537352b | 558 | |
1a4ac875 MS |
559 | if (!UNIT(m)->description) { |
560 | r = unit_set_description(u, m->where); | |
561 | if (r < 0) | |
173a8d04 | 562 | return r; |
1a4ac875 | 563 | } |
6e2ef85b | 564 | |
1a4ac875 MS |
565 | r = mount_add_device_links(m); |
566 | if (r < 0) | |
567 | return r; | |
6e2ef85b | 568 | |
1a4ac875 MS |
569 | r = mount_add_mount_links(m); |
570 | if (r < 0) | |
571 | return r; | |
6e2ef85b | 572 | |
1a4ac875 MS |
573 | r = mount_add_socket_links(m); |
574 | if (r < 0) | |
575 | return r; | |
e537352b | 576 | |
1a4ac875 MS |
577 | r = mount_add_swap_links(m); |
578 | if (r < 0) | |
579 | return r; | |
01f78473 | 580 | |
1a4ac875 MS |
581 | r = mount_add_path_links(m); |
582 | if (r < 0) | |
583 | return r; | |
7c8fa05c | 584 | |
1a4ac875 MS |
585 | r = mount_add_requires_mounts_links(m); |
586 | if (r < 0) | |
587 | return r; | |
588 | ||
589 | r = mount_add_automount_links(m); | |
590 | if (r < 0) | |
591 | return r; | |
592 | ||
593 | r = mount_add_quota_links(m); | |
594 | if (r < 0) | |
595 | return r; | |
e537352b | 596 | |
1a4ac875 MS |
597 | if (UNIT(m)->default_dependencies) { |
598 | r = mount_add_default_dependencies(m); | |
6b1dc2bd | 599 | if (r < 0) |
e537352b | 600 | return r; |
1a4ac875 | 601 | } |
4e67ddd6 | 602 | |
1a4ac875 MS |
603 | r = unit_add_default_cgroups(u); |
604 | if (r < 0) | |
605 | return r; | |
8024c3a7 | 606 | |
1a4ac875 MS |
607 | r = mount_fix_timeouts(m); |
608 | if (r < 0) | |
609 | return r; | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
614 | static int mount_load(Unit *u) { | |
615 | Mount *m = MOUNT(u); | |
616 | int r; | |
617 | ||
618 | assert(u); | |
619 | assert(u->load_state == UNIT_STUB); | |
620 | ||
8eba616f MS |
621 | if (m->from_proc_self_mountinfo) |
622 | r = unit_load_fragment_and_dropin_optional(u); | |
623 | else | |
624 | r = unit_load_fragment_and_dropin(u); | |
625 | ||
1a4ac875 MS |
626 | if (r < 0) |
627 | return r; | |
155da457 | 628 | |
1a4ac875 MS |
629 | /* This is a new unit? Then let's add in some extras */ |
630 | if (u->load_state == UNIT_LOADED) { | |
631 | r = mount_add_extras(m); | |
632 | if (r < 0) | |
633 | return r; | |
e06c73cc LP |
634 | |
635 | r = unit_patch_working_directory(UNIT(m), &m->exec_context); | |
636 | if (r < 0) | |
637 | return r; | |
e537352b LP |
638 | } |
639 | ||
8d567588 | 640 | return mount_verify(m); |
e537352b LP |
641 | } |
642 | ||
a16e1123 LP |
643 | static int mount_notify_automount(Mount *m, int status) { |
644 | Unit *p; | |
645 | int r; | |
57020a3a | 646 | Iterator i; |
a16e1123 LP |
647 | |
648 | assert(m); | |
649 | ||
1124fe6f | 650 | SET_FOREACH(p, UNIT(m)->dependencies[UNIT_TRIGGERED_BY], i) |
ac155bb8 | 651 | if (p->type == UNIT_AUTOMOUNT) { |
57020a3a LP |
652 | r = automount_send_ready(AUTOMOUNT(p), status); |
653 | if (r < 0) | |
654 | return r; | |
655 | } | |
a16e1123 | 656 | |
57020a3a | 657 | return 0; |
a16e1123 LP |
658 | } |
659 | ||
e537352b LP |
660 | static void mount_set_state(Mount *m, MountState state) { |
661 | MountState old_state; | |
662 | assert(m); | |
663 | ||
664 | old_state = m->state; | |
665 | m->state = state; | |
666 | ||
667 | if (state != MOUNT_MOUNTING && | |
668 | state != MOUNT_MOUNTING_DONE && | |
669 | state != MOUNT_REMOUNTING && | |
670 | state != MOUNT_UNMOUNTING && | |
671 | state != MOUNT_MOUNTING_SIGTERM && | |
672 | state != MOUNT_MOUNTING_SIGKILL && | |
673 | state != MOUNT_UNMOUNTING_SIGTERM && | |
674 | state != MOUNT_UNMOUNTING_SIGKILL && | |
675 | state != MOUNT_REMOUNTING_SIGTERM && | |
676 | state != MOUNT_REMOUNTING_SIGKILL) { | |
677 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
a16e1123 | 678 | mount_unwatch_control_pid(m); |
e537352b | 679 | m->control_command = NULL; |
a16e1123 | 680 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
681 | } |
682 | ||
8d567588 LP |
683 | if (state == MOUNT_MOUNTED || |
684 | state == MOUNT_REMOUNTING) | |
685 | mount_notify_automount(m, 0); | |
686 | else if (state == MOUNT_DEAD || | |
687 | state == MOUNT_UNMOUNTING || | |
688 | state == MOUNT_MOUNTING_SIGTERM || | |
689 | state == MOUNT_MOUNTING_SIGKILL || | |
690 | state == MOUNT_REMOUNTING_SIGTERM || | |
691 | state == MOUNT_REMOUNTING_SIGKILL || | |
692 | state == MOUNT_UNMOUNTING_SIGTERM || | |
693 | state == MOUNT_UNMOUNTING_SIGKILL || | |
36fcd77e MS |
694 | state == MOUNT_FAILED) { |
695 | if (state != old_state) | |
696 | mount_notify_automount(m, -ENODEV); | |
697 | } | |
8d567588 | 698 | |
e537352b | 699 | if (state != old_state) |
40d50879 | 700 | log_debug("%s changed %s -> %s", |
1124fe6f | 701 | UNIT(m)->id, |
a16e1123 LP |
702 | mount_state_to_string(old_state), |
703 | mount_state_to_string(state)); | |
e537352b | 704 | |
9d2f5178 LP |
705 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
706 | m->reload_result = MOUNT_SUCCESS; | |
e537352b LP |
707 | } |
708 | ||
709 | static int mount_coldplug(Unit *u) { | |
710 | Mount *m = MOUNT(u); | |
a16e1123 LP |
711 | MountState new_state = MOUNT_DEAD; |
712 | int r; | |
e537352b LP |
713 | |
714 | assert(m); | |
715 | assert(m->state == MOUNT_DEAD); | |
716 | ||
a16e1123 LP |
717 | if (m->deserialized_state != m->state) |
718 | new_state = m->deserialized_state; | |
719 | else if (m->from_proc_self_mountinfo) | |
720 | new_state = MOUNT_MOUNTED; | |
e537352b | 721 | |
a16e1123 | 722 | if (new_state != m->state) { |
e537352b | 723 | |
a16e1123 LP |
724 | if (new_state == MOUNT_MOUNTING || |
725 | new_state == MOUNT_MOUNTING_DONE || | |
726 | new_state == MOUNT_REMOUNTING || | |
727 | new_state == MOUNT_UNMOUNTING || | |
728 | new_state == MOUNT_MOUNTING_SIGTERM || | |
729 | new_state == MOUNT_MOUNTING_SIGKILL || | |
730 | new_state == MOUNT_UNMOUNTING_SIGTERM || | |
731 | new_state == MOUNT_UNMOUNTING_SIGKILL || | |
732 | new_state == MOUNT_REMOUNTING_SIGTERM || | |
733 | new_state == MOUNT_REMOUNTING_SIGKILL) { | |
e537352b | 734 | |
a16e1123 LP |
735 | if (m->control_pid <= 0) |
736 | return -EBADMSG; | |
e537352b | 737 | |
a16e1123 LP |
738 | if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0) |
739 | return r; | |
e537352b | 740 | |
a16e1123 LP |
741 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
742 | return r; | |
743 | } | |
e537352b | 744 | |
a16e1123 LP |
745 | mount_set_state(m, new_state); |
746 | } | |
e537352b LP |
747 | |
748 | return 0; | |
e537352b LP |
749 | } |
750 | ||
751 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
752 | Mount *m = MOUNT(u); | |
753 | MountParameters *p; | |
754 | ||
755 | assert(m); | |
756 | assert(f); | |
757 | ||
cb39ed3f | 758 | p = get_mount_parameters(m); |
e537352b LP |
759 | |
760 | fprintf(f, | |
761 | "%sMount State: %s\n" | |
81a5c6d0 | 762 | "%sResult: %s\n" |
e537352b LP |
763 | "%sWhere: %s\n" |
764 | "%sWhat: %s\n" | |
765 | "%sFile System Type: %s\n" | |
766 | "%sOptions: %s\n" | |
e537352b LP |
767 | "%sFrom /proc/self/mountinfo: %s\n" |
768 | "%sFrom fragment: %s\n" | |
3e5235b0 | 769 | "%sDirectoryMode: %04o\n", |
a16e1123 | 770 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 771 | prefix, mount_result_to_string(m->result), |
e537352b LP |
772 | prefix, m->where, |
773 | prefix, strna(p->what), | |
774 | prefix, strna(p->fstype), | |
775 | prefix, strna(p->options), | |
e537352b LP |
776 | prefix, yes_no(m->from_proc_self_mountinfo), |
777 | prefix, yes_no(m->from_fragment), | |
3e5235b0 | 778 | prefix, m->directory_mode); |
e537352b LP |
779 | |
780 | if (m->control_pid > 0) | |
781 | fprintf(f, | |
bb00e604 LP |
782 | "%sControl PID: %lu\n", |
783 | prefix, (unsigned long) m->control_pid); | |
e537352b LP |
784 | |
785 | exec_context_dump(&m->exec_context, f, prefix); | |
786 | } | |
787 | ||
a16e1123 LP |
788 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
789 | pid_t pid; | |
790 | int r; | |
791 | ||
792 | assert(m); | |
793 | assert(c); | |
794 | assert(_pid); | |
795 | ||
796 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) | |
797 | goto fail; | |
798 | ||
799 | if ((r = exec_spawn(c, | |
800 | NULL, | |
801 | &m->exec_context, | |
802 | NULL, 0, | |
1124fe6f | 803 | UNIT(m)->manager->environment, |
a16e1123 LP |
804 | true, |
805 | true, | |
1e3ad081 | 806 | true, |
1124fe6f MS |
807 | UNIT(m)->manager->confirm_spawn, |
808 | UNIT(m)->cgroup_bondings, | |
809 | UNIT(m)->cgroup_attributes, | |
ecedd90f | 810 | NULL, |
62bca2c6 | 811 | UNIT(m)->id, |
f2b68789 | 812 | NULL, |
a16e1123 LP |
813 | &pid)) < 0) |
814 | goto fail; | |
815 | ||
816 | if ((r = unit_watch_pid(UNIT(m), pid)) < 0) | |
817 | /* FIXME: we need to do something here */ | |
818 | goto fail; | |
819 | ||
820 | *_pid = pid; | |
821 | ||
822 | return 0; | |
823 | ||
824 | fail: | |
825 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
826 | ||
827 | return r; | |
828 | } | |
829 | ||
9d2f5178 | 830 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
831 | assert(m); |
832 | ||
9d2f5178 LP |
833 | if (f != MOUNT_SUCCESS) |
834 | m->result = f; | |
e537352b | 835 | |
9d2f5178 | 836 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
e537352b LP |
837 | } |
838 | ||
9d2f5178 | 839 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
840 | assert(m); |
841 | ||
9d2f5178 LP |
842 | if (f != MOUNT_SUCCESS) |
843 | m->result = f; | |
80876c20 LP |
844 | |
845 | mount_set_state(m, MOUNT_MOUNTED); | |
846 | } | |
847 | ||
9d2f5178 | 848 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b | 849 | int r; |
ca949c9d LP |
850 | Set *pid_set = NULL; |
851 | bool wait_for_exit = false; | |
e537352b LP |
852 | |
853 | assert(m); | |
854 | ||
9d2f5178 LP |
855 | if (f != MOUNT_SUCCESS) |
856 | m->result = f; | |
e537352b | 857 | |
2e22afe9 | 858 | if (m->exec_context.kill_mode != KILL_NONE) { |
80876c20 LP |
859 | int sig = (state == MOUNT_MOUNTING_SIGTERM || |
860 | state == MOUNT_UNMOUNTING_SIGTERM || | |
2e22afe9 | 861 | state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL; |
e537352b | 862 | |
ca949c9d | 863 | if (m->control_pid > 0) { |
cd25cce9 | 864 | if (kill_and_sigcont(m->control_pid, sig) < 0 && errno != ESRCH) |
e537352b | 865 | |
ca949c9d LP |
866 | log_warning("Failed to kill control process %li: %m", (long) m->control_pid); |
867 | else | |
868 | wait_for_exit = true; | |
e537352b LP |
869 | } |
870 | ||
ca949c9d | 871 | if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) { |
2e22afe9 | 872 | |
ca949c9d LP |
873 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { |
874 | r = -ENOMEM; | |
e537352b LP |
875 | goto fail; |
876 | } | |
ca949c9d LP |
877 | |
878 | /* Exclude the control pid from being killed via the cgroup */ | |
879 | if (m->control_pid > 0) | |
880 | if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) | |
881 | goto fail; | |
882 | ||
88f3e0c9 | 883 | r = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, sig, true, false, pid_set, NULL); |
ecedd90f | 884 | if (r < 0) { |
ca949c9d LP |
885 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) |
886 | log_warning("Failed to kill control group: %s", strerror(-r)); | |
887 | } else if (r > 0) | |
888 | wait_for_exit = true; | |
889 | ||
890 | set_free(pid_set); | |
da19d5c1 | 891 | pid_set = NULL; |
ca949c9d | 892 | } |
e537352b LP |
893 | } |
894 | ||
ca949c9d | 895 | if (wait_for_exit) { |
80876c20 LP |
896 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
897 | goto fail; | |
e537352b | 898 | |
80876c20 LP |
899 | mount_set_state(m, state); |
900 | } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) | |
9d2f5178 | 901 | mount_enter_mounted(m, MOUNT_SUCCESS); |
80876c20 | 902 | else |
9d2f5178 | 903 | mount_enter_dead(m, MOUNT_SUCCESS); |
e537352b LP |
904 | |
905 | return; | |
906 | ||
907 | fail: | |
1124fe6f | 908 | log_warning("%s failed to kill processes: %s", UNIT(m)->id, strerror(-r)); |
e537352b | 909 | |
80876c20 | 910 | if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) |
9d2f5178 | 911 | mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES); |
80876c20 | 912 | else |
9d2f5178 | 913 | mount_enter_dead(m, MOUNT_FAILURE_RESOURCES); |
ca949c9d LP |
914 | |
915 | if (pid_set) | |
916 | set_free(pid_set); | |
e537352b LP |
917 | } |
918 | ||
9d2f5178 | 919 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
920 | int r; |
921 | ||
922 | assert(m); | |
923 | ||
a16e1123 LP |
924 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
925 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b LP |
926 | |
927 | if ((r = exec_command_set( | |
a16e1123 | 928 | m->control_command, |
e537352b LP |
929 | "/bin/umount", |
930 | m->where, | |
931 | NULL)) < 0) | |
932 | goto fail; | |
933 | ||
a16e1123 | 934 | mount_unwatch_control_pid(m); |
5e94833f | 935 | |
a16e1123 | 936 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
937 | goto fail; |
938 | ||
939 | mount_set_state(m, MOUNT_UNMOUNTING); | |
940 | ||
941 | return; | |
942 | ||
943 | fail: | |
1124fe6f | 944 | log_warning("%s failed to run 'umount' task: %s", UNIT(m)->id, strerror(-r)); |
9d2f5178 | 945 | mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
946 | } |
947 | ||
8d567588 | 948 | static void mount_enter_mounting(Mount *m) { |
e537352b | 949 | int r; |
cb39ed3f | 950 | MountParameters *p; |
e537352b LP |
951 | |
952 | assert(m); | |
953 | ||
a16e1123 LP |
954 | m->control_command_id = MOUNT_EXEC_MOUNT; |
955 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 956 | |
d2e54fae | 957 | mkdir_p_label(m->where, m->directory_mode); |
3e5235b0 | 958 | |
cb39ed3f | 959 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 960 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 961 | if (p && mount_is_bind(p)) |
d2e54fae | 962 | mkdir_p_label(p->what, m->directory_mode); |
2b583ce6 | 963 | |
e537352b LP |
964 | if (m->from_fragment) |
965 | r = exec_command_set( | |
a16e1123 | 966 | m->control_command, |
e537352b LP |
967 | "/bin/mount", |
968 | m->parameters_fragment.what, | |
969 | m->where, | |
40b8a332 | 970 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
8d567588 | 971 | m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options, |
e537352b | 972 | NULL); |
e537352b LP |
973 | else |
974 | r = -ENOENT; | |
975 | ||
976 | if (r < 0) | |
977 | goto fail; | |
978 | ||
a16e1123 | 979 | mount_unwatch_control_pid(m); |
5e94833f | 980 | |
a16e1123 | 981 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
982 | goto fail; |
983 | ||
984 | mount_set_state(m, MOUNT_MOUNTING); | |
985 | ||
986 | return; | |
987 | ||
988 | fail: | |
1124fe6f | 989 | log_warning("%s failed to run 'mount' task: %s", UNIT(m)->id, strerror(-r)); |
9d2f5178 | 990 | mount_enter_dead(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
991 | } |
992 | ||
8d567588 | 993 | static void mount_enter_mounting_done(Mount *m) { |
e537352b LP |
994 | assert(m); |
995 | ||
e537352b LP |
996 | mount_set_state(m, MOUNT_MOUNTING_DONE); |
997 | } | |
998 | ||
9d2f5178 | 999 | static void mount_enter_remounting(Mount *m) { |
e537352b LP |
1000 | int r; |
1001 | ||
1002 | assert(m); | |
1003 | ||
a16e1123 LP |
1004 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1005 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b LP |
1006 | |
1007 | if (m->from_fragment) { | |
1008 | char *buf = NULL; | |
1009 | const char *o; | |
1010 | ||
1011 | if (m->parameters_fragment.options) { | |
1012 | if (!(buf = strappend("remount,", m->parameters_fragment.options))) { | |
1013 | r = -ENOMEM; | |
1014 | goto fail; | |
1015 | } | |
1016 | ||
1017 | o = buf; | |
1018 | } else | |
1019 | o = "remount"; | |
1020 | ||
1021 | r = exec_command_set( | |
a16e1123 | 1022 | m->control_command, |
e537352b LP |
1023 | "/bin/mount", |
1024 | m->parameters_fragment.what, | |
1025 | m->where, | |
40b8a332 | 1026 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
e537352b LP |
1027 | "-o", o, |
1028 | NULL); | |
1029 | ||
1030 | free(buf); | |
6b1dc2bd | 1031 | } else |
e537352b LP |
1032 | r = -ENOENT; |
1033 | ||
60b912f6 | 1034 | if (r < 0) |
e537352b | 1035 | goto fail; |
e537352b | 1036 | |
a16e1123 | 1037 | mount_unwatch_control_pid(m); |
5e94833f | 1038 | |
a16e1123 | 1039 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
1040 | goto fail; |
1041 | ||
1042 | mount_set_state(m, MOUNT_REMOUNTING); | |
1043 | ||
1044 | return; | |
1045 | ||
1046 | fail: | |
1124fe6f | 1047 | log_warning("%s failed to run 'remount' task: %s", UNIT(m)->id, strerror(-r)); |
9d2f5178 LP |
1048 | m->reload_result = MOUNT_FAILURE_RESOURCES; |
1049 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
e537352b LP |
1050 | } |
1051 | ||
1052 | static int mount_start(Unit *u) { | |
1053 | Mount *m = MOUNT(u); | |
1054 | ||
1055 | assert(m); | |
1056 | ||
1057 | /* We cannot fulfill this request right now, try again later | |
1058 | * please! */ | |
1059 | if (m->state == MOUNT_UNMOUNTING || | |
1060 | m->state == MOUNT_UNMOUNTING_SIGTERM || | |
60b912f6 LP |
1061 | m->state == MOUNT_UNMOUNTING_SIGKILL || |
1062 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1063 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1064 | return -EAGAIN; |
1065 | ||
1066 | /* Already on it! */ | |
60b912f6 | 1067 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1068 | return 0; |
1069 | ||
fdf20a31 | 1070 | assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED); |
e537352b | 1071 | |
9d2f5178 LP |
1072 | m->result = MOUNT_SUCCESS; |
1073 | m->reload_result = MOUNT_SUCCESS; | |
1074 | ||
8d567588 | 1075 | mount_enter_mounting(m); |
e537352b LP |
1076 | return 0; |
1077 | } | |
1078 | ||
1079 | static int mount_stop(Unit *u) { | |
1080 | Mount *m = MOUNT(u); | |
1081 | ||
1082 | assert(m); | |
1083 | ||
e537352b LP |
1084 | /* Already on it */ |
1085 | if (m->state == MOUNT_UNMOUNTING || | |
1086 | m->state == MOUNT_UNMOUNTING_SIGKILL || | |
60b912f6 LP |
1087 | m->state == MOUNT_UNMOUNTING_SIGTERM || |
1088 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1089 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1090 | return 0; |
1091 | ||
3f6c78dc LP |
1092 | assert(m->state == MOUNT_MOUNTING || |
1093 | m->state == MOUNT_MOUNTING_DONE || | |
1094 | m->state == MOUNT_MOUNTED || | |
3f6c78dc LP |
1095 | m->state == MOUNT_REMOUNTING || |
1096 | m->state == MOUNT_REMOUNTING_SIGTERM || | |
1097 | m->state == MOUNT_REMOUNTING_SIGKILL); | |
e537352b | 1098 | |
9d2f5178 | 1099 | mount_enter_unmounting(m); |
e537352b LP |
1100 | return 0; |
1101 | } | |
1102 | ||
1103 | static int mount_reload(Unit *u) { | |
1104 | Mount *m = MOUNT(u); | |
1105 | ||
1106 | assert(m); | |
1107 | ||
1108 | if (m->state == MOUNT_MOUNTING_DONE) | |
1109 | return -EAGAIN; | |
1110 | ||
1111 | assert(m->state == MOUNT_MOUNTED); | |
1112 | ||
9d2f5178 | 1113 | mount_enter_remounting(m); |
e537352b LP |
1114 | return 0; |
1115 | } | |
1116 | ||
a16e1123 LP |
1117 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1118 | Mount *m = MOUNT(u); | |
1119 | ||
1120 | assert(m); | |
1121 | assert(f); | |
1122 | assert(fds); | |
1123 | ||
1124 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1125 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1126 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1127 | |
1128 | if (m->control_pid > 0) | |
5925dd3c | 1129 | unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid); |
a16e1123 LP |
1130 | |
1131 | if (m->control_command_id >= 0) | |
1132 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1138 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1139 | |
1140 | assert(u); | |
1141 | assert(key); | |
1142 | assert(value); | |
1143 | assert(fds); | |
1144 | ||
1145 | if (streq(key, "state")) { | |
1146 | MountState state; | |
1147 | ||
1148 | if ((state = mount_state_from_string(value)) < 0) | |
1149 | log_debug("Failed to parse state value %s", value); | |
1150 | else | |
1151 | m->deserialized_state = state; | |
9d2f5178 LP |
1152 | } else if (streq(key, "result")) { |
1153 | MountResult f; | |
a16e1123 | 1154 | |
9d2f5178 LP |
1155 | f = mount_result_from_string(value); |
1156 | if (f < 0) | |
1157 | log_debug("Failed to parse result value %s", value); | |
1158 | else if (f != MOUNT_SUCCESS) | |
1159 | m->result = f; | |
1160 | ||
1161 | } else if (streq(key, "reload-result")) { | |
1162 | MountResult f; | |
1163 | ||
1164 | f = mount_result_from_string(value); | |
1165 | if (f < 0) | |
1166 | log_debug("Failed to parse reload result value %s", value); | |
1167 | else if (f != MOUNT_SUCCESS) | |
1168 | m->reload_result = f; | |
a16e1123 LP |
1169 | |
1170 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1171 | pid_t pid; |
a16e1123 | 1172 | |
e364ad06 | 1173 | if (parse_pid(value, &pid) < 0) |
a16e1123 LP |
1174 | log_debug("Failed to parse control-pid value %s", value); |
1175 | else | |
5925dd3c | 1176 | m->control_pid = pid; |
a16e1123 LP |
1177 | } else if (streq(key, "control-command")) { |
1178 | MountExecCommand id; | |
1179 | ||
1180 | if ((id = mount_exec_command_from_string(value)) < 0) | |
1181 | log_debug("Failed to parse exec-command value %s", value); | |
1182 | else { | |
1183 | m->control_command_id = id; | |
1184 | m->control_command = m->exec_command + id; | |
1185 | } | |
1186 | ||
1187 | } else | |
1188 | log_debug("Unknown serialization key '%s'", key); | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
e537352b LP |
1193 | static UnitActiveState mount_active_state(Unit *u) { |
1194 | assert(u); | |
1195 | ||
1196 | return state_translation_table[MOUNT(u)->state]; | |
1197 | } | |
1198 | ||
10a94420 LP |
1199 | static const char *mount_sub_state_to_string(Unit *u) { |
1200 | assert(u); | |
1201 | ||
a16e1123 | 1202 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1203 | } |
1204 | ||
701cc384 LP |
1205 | static bool mount_check_gc(Unit *u) { |
1206 | Mount *m = MOUNT(u); | |
1207 | ||
1208 | assert(m); | |
1209 | ||
6b1dc2bd | 1210 | return m->from_proc_self_mountinfo; |
701cc384 LP |
1211 | } |
1212 | ||
e537352b LP |
1213 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1214 | Mount *m = MOUNT(u); | |
9d2f5178 | 1215 | MountResult f; |
e537352b LP |
1216 | |
1217 | assert(m); | |
1218 | assert(pid >= 0); | |
1219 | ||
8c47c732 LP |
1220 | if (pid != m->control_pid) |
1221 | return; | |
e537352b | 1222 | |
e537352b LP |
1223 | m->control_pid = 0; |
1224 | ||
9d2f5178 LP |
1225 | if (is_clean_exit(code, status)) |
1226 | f = MOUNT_SUCCESS; | |
1227 | else if (code == CLD_EXITED) | |
1228 | f = MOUNT_FAILURE_EXIT_CODE; | |
1229 | else if (code == CLD_KILLED) | |
1230 | f = MOUNT_FAILURE_SIGNAL; | |
1231 | else if (code == CLD_DUMPED) | |
1232 | f = MOUNT_FAILURE_CORE_DUMP; | |
1233 | else | |
1234 | assert_not_reached("Unknown code"); | |
1235 | ||
1236 | if (f != MOUNT_SUCCESS) | |
1237 | m->result = f; | |
8c47c732 | 1238 | |
a16e1123 | 1239 | if (m->control_command) { |
6ea832a2 | 1240 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1241 | |
a16e1123 LP |
1242 | m->control_command = NULL; |
1243 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1244 | } | |
1245 | ||
9d2f5178 | 1246 | log_full(f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, |
ac155bb8 | 1247 | "%s mount process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status); |
e537352b LP |
1248 | |
1249 | /* Note that mount(8) returning and the kernel sending us a | |
1250 | * mount table change event might happen out-of-order. If an | |
1251 | * operation succeed we assume the kernel will follow soon too | |
1252 | * and already change into the resulting state. If it fails | |
1253 | * we check if the kernel still knows about the mount. and | |
1254 | * change state accordingly. */ | |
1255 | ||
1256 | switch (m->state) { | |
1257 | ||
1258 | case MOUNT_MOUNTING: | |
1259 | case MOUNT_MOUNTING_DONE: | |
1260 | case MOUNT_MOUNTING_SIGKILL: | |
1261 | case MOUNT_MOUNTING_SIGTERM: | |
e537352b | 1262 | |
9d2f5178 LP |
1263 | if (f == MOUNT_SUCCESS) |
1264 | mount_enter_mounted(m, f); | |
e537352b | 1265 | else if (m->from_proc_self_mountinfo) |
9d2f5178 | 1266 | mount_enter_mounted(m, f); |
e537352b | 1267 | else |
9d2f5178 | 1268 | mount_enter_dead(m, f); |
e537352b LP |
1269 | break; |
1270 | ||
e2f3b44c LP |
1271 | case MOUNT_REMOUNTING: |
1272 | case MOUNT_REMOUNTING_SIGKILL: | |
1273 | case MOUNT_REMOUNTING_SIGTERM: | |
1274 | ||
9d2f5178 | 1275 | m->reload_result = f; |
e2f3b44c | 1276 | if (m->from_proc_self_mountinfo) |
9d2f5178 | 1277 | mount_enter_mounted(m, MOUNT_SUCCESS); |
e2f3b44c | 1278 | else |
9d2f5178 | 1279 | mount_enter_dead(m, MOUNT_SUCCESS); |
e2f3b44c LP |
1280 | |
1281 | break; | |
1282 | ||
e537352b LP |
1283 | case MOUNT_UNMOUNTING: |
1284 | case MOUNT_UNMOUNTING_SIGKILL: | |
1285 | case MOUNT_UNMOUNTING_SIGTERM: | |
1286 | ||
9d2f5178 LP |
1287 | if (f == MOUNT_SUCCESS) |
1288 | mount_enter_dead(m, f); | |
e537352b | 1289 | else if (m->from_proc_self_mountinfo) |
9d2f5178 | 1290 | mount_enter_mounted(m, f); |
e537352b | 1291 | else |
9d2f5178 | 1292 | mount_enter_dead(m, f); |
e537352b LP |
1293 | break; |
1294 | ||
1295 | default: | |
1296 | assert_not_reached("Uh, control process died at wrong time."); | |
1297 | } | |
c4e2ceae LP |
1298 | |
1299 | /* Notify clients about changed exit status */ | |
1300 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1301 | } |
1302 | ||
1303 | static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) { | |
1304 | Mount *m = MOUNT(u); | |
1305 | ||
1306 | assert(m); | |
1307 | assert(elapsed == 1); | |
1308 | assert(w == &m->timer_watch); | |
1309 | ||
1310 | switch (m->state) { | |
1311 | ||
1312 | case MOUNT_MOUNTING: | |
1313 | case MOUNT_MOUNTING_DONE: | |
ac155bb8 | 1314 | log_warning("%s mounting timed out. Stopping.", u->id); |
9d2f5178 | 1315 | mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1316 | break; |
1317 | ||
1318 | case MOUNT_REMOUNTING: | |
ac155bb8 | 1319 | log_warning("%s remounting timed out. Stopping.", u->id); |
9d2f5178 LP |
1320 | m->reload_result = MOUNT_FAILURE_TIMEOUT; |
1321 | mount_enter_mounted(m, MOUNT_SUCCESS); | |
e537352b LP |
1322 | break; |
1323 | ||
1324 | case MOUNT_UNMOUNTING: | |
ac155bb8 | 1325 | log_warning("%s unmounting timed out. Stopping.", u->id); |
9d2f5178 | 1326 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1327 | break; |
1328 | ||
1329 | case MOUNT_MOUNTING_SIGTERM: | |
ba035df2 | 1330 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1331 | log_warning("%s mounting timed out. Killing.", u->id); |
9d2f5178 | 1332 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1333 | } else { |
ac155bb8 | 1334 | log_warning("%s mounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1335 | |
1336 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1337 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1338 | else |
9d2f5178 | 1339 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1340 | } |
e537352b LP |
1341 | break; |
1342 | ||
1343 | case MOUNT_REMOUNTING_SIGTERM: | |
ba035df2 | 1344 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1345 | log_warning("%s remounting timed out. Killing.", u->id); |
9d2f5178 | 1346 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1347 | } else { |
ac155bb8 | 1348 | log_warning("%s remounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1349 | |
1350 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1351 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1352 | else |
9d2f5178 | 1353 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1354 | } |
e537352b LP |
1355 | break; |
1356 | ||
1357 | case MOUNT_UNMOUNTING_SIGTERM: | |
ba035df2 | 1358 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1359 | log_warning("%s unmounting timed out. Killing.", u->id); |
9d2f5178 | 1360 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1361 | } else { |
ac155bb8 | 1362 | log_warning("%s unmounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1363 | |
1364 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1365 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1366 | else |
9d2f5178 | 1367 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1368 | } |
e537352b LP |
1369 | break; |
1370 | ||
1371 | case MOUNT_MOUNTING_SIGKILL: | |
1372 | case MOUNT_REMOUNTING_SIGKILL: | |
1373 | case MOUNT_UNMOUNTING_SIGKILL: | |
ac155bb8 | 1374 | log_warning("%s mount process still around after SIGKILL. Ignoring.", u->id); |
e537352b LP |
1375 | |
1376 | if (m->from_proc_self_mountinfo) | |
9d2f5178 | 1377 | mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT); |
e537352b | 1378 | else |
9d2f5178 | 1379 | mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1380 | break; |
1381 | ||
1382 | default: | |
1383 | assert_not_reached("Timeout at wrong time."); | |
1384 | } | |
1385 | } | |
1386 | ||
1387 | static int mount_add_one( | |
1388 | Manager *m, | |
1389 | const char *what, | |
1390 | const char *where, | |
1391 | const char *options, | |
1392 | const char *fstype, | |
9fff8a1f | 1393 | int passno, |
e537352b | 1394 | bool set_flags) { |
b08d03ff LP |
1395 | int r; |
1396 | Unit *u; | |
1397 | bool delete; | |
e537352b | 1398 | char *e, *w = NULL, *o = NULL, *f = NULL; |
4e85aff4 | 1399 | MountParameters *p; |
b08d03ff | 1400 | |
f50e0a01 | 1401 | assert(m); |
b08d03ff LP |
1402 | assert(what); |
1403 | assert(where); | |
e537352b LP |
1404 | assert(options); |
1405 | assert(fstype); | |
1406 | ||
e537352b LP |
1407 | /* Ignore API mount points. They should never be referenced in |
1408 | * dependencies ever. */ | |
33ff02c9 | 1409 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1410 | return 0; |
b08d03ff | 1411 | |
8d567588 LP |
1412 | if (streq(fstype, "autofs")) |
1413 | return 0; | |
1414 | ||
4e85aff4 LP |
1415 | /* probably some kind of swap, ignore */ |
1416 | if (!is_path(where)) | |
b08d03ff LP |
1417 | return 0; |
1418 | ||
7d17cfbc MS |
1419 | e = unit_name_from_path(where, ".mount"); |
1420 | if (!e) | |
b08d03ff LP |
1421 | return -ENOMEM; |
1422 | ||
7d17cfbc MS |
1423 | u = manager_get_unit(m, e); |
1424 | if (!u) { | |
b08d03ff LP |
1425 | delete = true; |
1426 | ||
7d17cfbc MS |
1427 | u = unit_new(m, sizeof(Mount)); |
1428 | if (!u) { | |
b08d03ff LP |
1429 | free(e); |
1430 | return -ENOMEM; | |
1431 | } | |
1432 | ||
1433 | r = unit_add_name(u, e); | |
1434 | free(e); | |
1435 | ||
1436 | if (r < 0) | |
1437 | goto fail; | |
1438 | ||
7d17cfbc MS |
1439 | MOUNT(u)->where = strdup(where); |
1440 | if (!MOUNT(u)->where) { | |
07b0b134 ML |
1441 | r = -ENOMEM; |
1442 | goto fail; | |
1443 | } | |
f50e0a01 | 1444 | |
f94ea366 | 1445 | unit_add_to_load_queue(u); |
b08d03ff LP |
1446 | } else { |
1447 | delete = false; | |
1448 | free(e); | |
8eba616f MS |
1449 | |
1450 | if (u->load_state == UNIT_ERROR) { | |
1451 | u->load_state = UNIT_LOADED; | |
1452 | u->load_error = 0; | |
1453 | r = mount_add_extras(MOUNT(u)); | |
1454 | if (r < 0) | |
1455 | goto fail; | |
1456 | } | |
b08d03ff LP |
1457 | } |
1458 | ||
e537352b LP |
1459 | if (!(w = strdup(what)) || |
1460 | !(o = strdup(options)) || | |
1461 | !(f = strdup(fstype))) { | |
1462 | r = -ENOMEM; | |
1463 | goto fail; | |
1464 | } | |
1465 | ||
6b1dc2bd LP |
1466 | p = &MOUNT(u)->parameters_proc_self_mountinfo; |
1467 | if (set_flags) { | |
1468 | MOUNT(u)->is_mounted = true; | |
1469 | MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
1470 | MOUNT(u)->just_changed = !streq_ptr(p->options, o); | |
ef734fd6 | 1471 | } |
f50e0a01 | 1472 | |
6b1dc2bd LP |
1473 | MOUNT(u)->from_proc_self_mountinfo = true; |
1474 | ||
4e85aff4 LP |
1475 | free(p->what); |
1476 | p->what = w; | |
b08d03ff | 1477 | |
4e85aff4 LP |
1478 | free(p->options); |
1479 | p->options = o; | |
e537352b | 1480 | |
4e85aff4 LP |
1481 | free(p->fstype); |
1482 | p->fstype = f; | |
b08d03ff | 1483 | |
9fff8a1f LP |
1484 | p->passno = passno; |
1485 | ||
c1e1601e LP |
1486 | unit_add_to_dbus_queue(u); |
1487 | ||
b08d03ff LP |
1488 | return 0; |
1489 | ||
1490 | fail: | |
e537352b LP |
1491 | free(w); |
1492 | free(o); | |
1493 | free(f); | |
1494 | ||
b08d03ff LP |
1495 | if (delete && u) |
1496 | unit_free(u); | |
1497 | ||
4e85aff4 | 1498 | return r; |
b08d03ff LP |
1499 | } |
1500 | ||
ef734fd6 | 1501 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
60b912f6 | 1502 | int r = 0; |
1ddff895 | 1503 | unsigned i; |
a2e0f3d3 | 1504 | char *device, *path, *options, *options2, *fstype, *d, *p, *o; |
b08d03ff LP |
1505 | |
1506 | assert(m); | |
1507 | ||
ef734fd6 | 1508 | rewind(m->proc_self_mountinfo); |
b08d03ff | 1509 | |
1ddff895 | 1510 | for (i = 1;; i++) { |
b08d03ff | 1511 | int k; |
e537352b | 1512 | |
a2e0f3d3 | 1513 | device = path = options = options2 = fstype = d = p = o = NULL; |
b08d03ff | 1514 | |
ef734fd6 | 1515 | if ((k = fscanf(m->proc_self_mountinfo, |
b08d03ff LP |
1516 | "%*s " /* (1) mount id */ |
1517 | "%*s " /* (2) parent id */ | |
1518 | "%*s " /* (3) major:minor */ | |
1519 | "%*s " /* (4) root */ | |
1520 | "%ms " /* (5) mount point */ | |
e537352b | 1521 | "%ms" /* (6) mount options */ |
b08d03ff | 1522 | "%*[^-]" /* (7) optional fields */ |
c899f8c6 | 1523 | "- " /* (8) separator */ |
e537352b | 1524 | "%ms " /* (9) file system type */ |
ef734fd6 | 1525 | "%ms" /* (10) mount source */ |
a2e0f3d3 | 1526 | "%ms" /* (11) mount options 2 */ |
ef734fd6 | 1527 | "%*[^\n]", /* some rubbish at the end */ |
b08d03ff | 1528 | &path, |
e537352b LP |
1529 | &options, |
1530 | &fstype, | |
a2e0f3d3 LP |
1531 | &device, |
1532 | &options2)) != 5) { | |
b08d03ff | 1533 | |
ef734fd6 LP |
1534 | if (k == EOF) |
1535 | break; | |
b08d03ff | 1536 | |
1ddff895 FF |
1537 | log_warning("Failed to parse /proc/self/mountinfo:%u.", i); |
1538 | goto clean_up; | |
b08d03ff LP |
1539 | } |
1540 | ||
b7def684 | 1541 | o = strjoin(options, ",", options2, NULL); |
f7f21d33 | 1542 | if (!o) { |
a2e0f3d3 LP |
1543 | r = -ENOMEM; |
1544 | goto finish; | |
1545 | } | |
1546 | ||
e537352b LP |
1547 | if (!(d = cunescape(device)) || |
1548 | !(p = cunescape(path))) { | |
1549 | r = -ENOMEM; | |
1550 | goto finish; | |
b08d03ff | 1551 | } |
b08d03ff | 1552 | |
6b1dc2bd | 1553 | if ((k = mount_add_one(m, d, p, o, fstype, 0, set_flags)) < 0) |
60b912f6 | 1554 | r = k; |
b08d03ff | 1555 | |
1ddff895 | 1556 | clean_up: |
e537352b LP |
1557 | free(device); |
1558 | free(path); | |
1559 | free(options); | |
a2e0f3d3 | 1560 | free(options2); |
e537352b | 1561 | free(fstype); |
b08d03ff LP |
1562 | free(d); |
1563 | free(p); | |
a2e0f3d3 | 1564 | free(o); |
b08d03ff LP |
1565 | } |
1566 | ||
e537352b LP |
1567 | finish: |
1568 | free(device); | |
1569 | free(path); | |
1570 | free(options); | |
a2e0f3d3 | 1571 | free(options2); |
e537352b LP |
1572 | free(fstype); |
1573 | free(d); | |
1574 | free(p); | |
a2e0f3d3 | 1575 | free(o); |
e537352b LP |
1576 | |
1577 | return r; | |
1578 | } | |
1579 | ||
1580 | static void mount_shutdown(Manager *m) { | |
1581 | assert(m); | |
1582 | ||
a16e1123 | 1583 | if (m->proc_self_mountinfo) { |
e537352b | 1584 | fclose(m->proc_self_mountinfo); |
a16e1123 LP |
1585 | m->proc_self_mountinfo = NULL; |
1586 | } | |
b08d03ff LP |
1587 | } |
1588 | ||
1589 | static int mount_enumerate(Manager *m) { | |
1590 | int r; | |
ef734fd6 | 1591 | struct epoll_event ev; |
b08d03ff LP |
1592 | assert(m); |
1593 | ||
a16e1123 LP |
1594 | if (!m->proc_self_mountinfo) { |
1595 | if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"))) | |
1596 | return -errno; | |
ef734fd6 | 1597 | |
a16e1123 LP |
1598 | m->mount_watch.type = WATCH_MOUNT; |
1599 | m->mount_watch.fd = fileno(m->proc_self_mountinfo); | |
ef734fd6 | 1600 | |
a16e1123 | 1601 | zero(ev); |
4e434314 | 1602 | ev.events = EPOLLPRI; |
a16e1123 | 1603 | ev.data.ptr = &m->mount_watch; |
ef734fd6 | 1604 | |
a16e1123 LP |
1605 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0) |
1606 | return -errno; | |
1607 | } | |
ef734fd6 | 1608 | |
ef734fd6 | 1609 | if ((r = mount_load_proc_self_mountinfo(m, false)) < 0) |
b08d03ff LP |
1610 | goto fail; |
1611 | ||
1612 | return 0; | |
1613 | ||
1614 | fail: | |
1615 | mount_shutdown(m); | |
1616 | return r; | |
5cb5a6ff LP |
1617 | } |
1618 | ||
ef734fd6 | 1619 | void mount_fd_event(Manager *m, int events) { |
595ed347 | 1620 | Unit *u; |
ef734fd6 LP |
1621 | int r; |
1622 | ||
1623 | assert(m); | |
4e434314 | 1624 | assert(events & EPOLLPRI); |
ef734fd6 LP |
1625 | |
1626 | /* The manager calls this for every fd event happening on the | |
1627 | * /proc/self/mountinfo file, which informs us about mounting | |
1628 | * table changes */ | |
1629 | ||
1630 | if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) { | |
e364ad06 | 1631 | log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r)); |
e537352b LP |
1632 | |
1633 | /* Reset flags, just in case, for later calls */ | |
595ed347 MS |
1634 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1635 | Mount *mount = MOUNT(u); | |
e537352b LP |
1636 | |
1637 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1638 | } | |
1639 | ||
ef734fd6 LP |
1640 | return; |
1641 | } | |
1642 | ||
1643 | manager_dispatch_load_queue(m); | |
1644 | ||
595ed347 MS |
1645 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1646 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1647 | |
e537352b LP |
1648 | if (!mount->is_mounted) { |
1649 | /* This has just been unmounted. */ | |
1650 | ||
ef734fd6 | 1651 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1652 | |
1653 | switch (mount->state) { | |
1654 | ||
1655 | case MOUNT_MOUNTED: | |
9d2f5178 | 1656 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1657 | break; |
1658 | ||
1659 | default: | |
1660 | mount_set_state(mount, mount->state); | |
1661 | break; | |
1662 | ||
1663 | } | |
1664 | ||
1665 | } else if (mount->just_mounted || mount->just_changed) { | |
1666 | ||
60b912f6 | 1667 | /* New or changed mount entry */ |
e537352b LP |
1668 | |
1669 | switch (mount->state) { | |
1670 | ||
1671 | case MOUNT_DEAD: | |
fdf20a31 | 1672 | case MOUNT_FAILED: |
9d2f5178 | 1673 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1674 | break; |
1675 | ||
1676 | case MOUNT_MOUNTING: | |
8d567588 | 1677 | mount_enter_mounting_done(mount); |
e537352b LP |
1678 | break; |
1679 | ||
1680 | default: | |
1681 | /* Nothing really changed, but let's | |
1682 | * issue an notification call | |
1683 | * nonetheless, in case somebody is | |
1684 | * waiting for this. (e.g. file system | |
1685 | * ro/rw remounts.) */ | |
1686 | mount_set_state(mount, mount->state); | |
1687 | break; | |
1688 | } | |
1689 | } | |
1690 | ||
1691 | /* Reset the flags for later calls */ | |
1692 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1693 | } | |
1694 | } | |
1695 | ||
fdf20a31 | 1696 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1697 | Mount *m = MOUNT(u); |
1698 | ||
1699 | assert(m); | |
1700 | ||
fdf20a31 | 1701 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1702 | mount_set_state(m, MOUNT_DEAD); |
1703 | ||
9d2f5178 LP |
1704 | m->result = MOUNT_SUCCESS; |
1705 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1706 | } |
1707 | ||
8a0867d6 LP |
1708 | static int mount_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { |
1709 | Mount *m = MOUNT(u); | |
1710 | int r = 0; | |
1711 | Set *pid_set = NULL; | |
1712 | ||
1713 | assert(m); | |
1714 | ||
1715 | if (who == KILL_MAIN) { | |
1716 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Mount units have no main processes"); | |
a17204af | 1717 | return -ESRCH; |
8a0867d6 LP |
1718 | } |
1719 | ||
1720 | if (m->control_pid <= 0 && who == KILL_CONTROL) { | |
1721 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
a17204af | 1722 | return -ESRCH; |
8a0867d6 LP |
1723 | } |
1724 | ||
3611581e LP |
1725 | if (who == KILL_CONTROL || who == KILL_ALL) |
1726 | if (m->control_pid > 0) | |
1727 | if (kill(m->control_pid, signo) < 0) | |
1728 | r = -errno; | |
8a0867d6 | 1729 | |
3611581e | 1730 | if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { |
8a0867d6 LP |
1731 | int q; |
1732 | ||
1733 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) | |
1734 | return -ENOMEM; | |
1735 | ||
1736 | /* Exclude the control pid from being killed via the cgroup */ | |
1737 | if (m->control_pid > 0) | |
1738 | if ((q = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) { | |
1739 | r = q; | |
1740 | goto finish; | |
1741 | } | |
1742 | ||
88f3e0c9 | 1743 | q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, false, pid_set, NULL); |
ecedd90f | 1744 | if (q < 0) |
3611581e | 1745 | if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
8a0867d6 LP |
1746 | r = q; |
1747 | } | |
1748 | ||
1749 | finish: | |
1750 | if (pid_set) | |
1751 | set_free(pid_set); | |
1752 | ||
1753 | return r; | |
1754 | } | |
1755 | ||
a16e1123 LP |
1756 | static const char* const mount_state_table[_MOUNT_STATE_MAX] = { |
1757 | [MOUNT_DEAD] = "dead", | |
1758 | [MOUNT_MOUNTING] = "mounting", | |
1759 | [MOUNT_MOUNTING_DONE] = "mounting-done", | |
1760 | [MOUNT_MOUNTED] = "mounted", | |
1761 | [MOUNT_REMOUNTING] = "remounting", | |
1762 | [MOUNT_UNMOUNTING] = "unmounting", | |
1763 | [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm", | |
1764 | [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill", | |
1765 | [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm", | |
1766 | [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill", | |
1767 | [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm", | |
1768 | [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill", | |
fdf20a31 | 1769 | [MOUNT_FAILED] = "failed" |
a16e1123 LP |
1770 | }; |
1771 | ||
1772 | DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState); | |
1773 | ||
1774 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { | |
1775 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1776 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1777 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1778 | }; | |
1779 | ||
1780 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1781 | ||
9d2f5178 LP |
1782 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1783 | [MOUNT_SUCCESS] = "success", | |
1784 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1785 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1786 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1787 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
1788 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump" | |
1789 | }; | |
1790 | ||
1791 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1792 | ||
87f0e418 | 1793 | const UnitVTable mount_vtable = { |
7d17cfbc | 1794 | .object_size = sizeof(Mount), |
f975e971 LP |
1795 | .sections = |
1796 | "Unit\0" | |
1797 | "Mount\0" | |
1798 | "Install\0", | |
5cb5a6ff | 1799 | |
e537352b | 1800 | .no_alias = true, |
9e2f7c11 | 1801 | .no_instances = true, |
e537352b LP |
1802 | |
1803 | .init = mount_init, | |
1804 | .load = mount_load, | |
034c6ed7 | 1805 | .done = mount_done, |
e537352b | 1806 | |
f50e0a01 LP |
1807 | .coldplug = mount_coldplug, |
1808 | ||
034c6ed7 | 1809 | .dump = mount_dump, |
5cb5a6ff | 1810 | |
e537352b LP |
1811 | .start = mount_start, |
1812 | .stop = mount_stop, | |
1813 | .reload = mount_reload, | |
1814 | ||
8a0867d6 LP |
1815 | .kill = mount_kill, |
1816 | ||
a16e1123 LP |
1817 | .serialize = mount_serialize, |
1818 | .deserialize_item = mount_deserialize_item, | |
1819 | ||
f50e0a01 | 1820 | .active_state = mount_active_state, |
10a94420 | 1821 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1822 | |
701cc384 LP |
1823 | .check_gc = mount_check_gc, |
1824 | ||
e537352b LP |
1825 | .sigchld_event = mount_sigchld_event, |
1826 | .timer_event = mount_timer_event, | |
1827 | ||
fdf20a31 | 1828 | .reset_failed = mount_reset_failed, |
5632e374 | 1829 | |
c4e2ceae | 1830 | .bus_interface = "org.freedesktop.systemd1.Mount", |
4139c1b2 | 1831 | .bus_message_handler = bus_mount_message_handler, |
c4e2ceae | 1832 | .bus_invalidating_properties = bus_mount_invalidating_properties, |
4139c1b2 | 1833 | |
f50e0a01 | 1834 | .enumerate = mount_enumerate, |
c6918296 MS |
1835 | .shutdown = mount_shutdown, |
1836 | ||
1837 | .status_message_formats = { | |
1838 | .starting_stopping = { | |
1839 | [0] = "Mounting %s...", | |
1840 | [1] = "Unmounting %s...", | |
1841 | }, | |
1842 | .finished_start_job = { | |
1843 | [JOB_DONE] = "Mounted %s.", | |
1844 | [JOB_FAILED] = "Failed to mount %s.", | |
1845 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
1846 | [JOB_TIMEOUT] = "Timed out mounting %s.", | |
1847 | }, | |
1848 | .finished_stop_job = { | |
1849 | [JOB_DONE] = "Unmounted %s.", | |
1850 | [JOB_FAILED] = "Failed unmounting %s.", | |
1851 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
1852 | }, | |
1853 | }, | |
5cb5a6ff | 1854 | }; |