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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 | 61 | assert(u); |
ac155bb8 | 62 | assert(u->load_state == UNIT_STUB); |
a16e1123 LP |
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 */ | |
f6cebb3b | 71 | if (!unit_has_name(u, "-.mount")) { |
ac155bb8 MS |
72 | m->exec_context.std_output = u->manager->default_std_output; |
73 | m->exec_context.std_error = u->manager->default_std_error; | |
f6cebb3b | 74 | } |
c3686083 | 75 | |
a16e1123 LP |
76 | /* We need to make sure that /bin/mount is always called in |
77 | * the same process group as us, so that the autofs kernel | |
78 | * side doesn't send us another mount request while we are | |
79 | * already trying to comply its last one. */ | |
74922904 | 80 | m->exec_context.same_pgrp = true; |
8d567588 | 81 | |
a16e1123 LP |
82 | m->timer_watch.type = WATCH_INVALID; |
83 | ||
84 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
c8f4d764 | 85 | |
1124fe6f | 86 | UNIT(m)->ignore_on_isolate = true; |
8d567588 LP |
87 | } |
88 | ||
a16e1123 | 89 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
90 | assert(m); |
91 | ||
92 | if (m->control_pid <= 0) | |
93 | return; | |
94 | ||
95 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
96 | m->control_pid = 0; | |
97 | } | |
98 | ||
e537352b LP |
99 | static void mount_parameters_done(MountParameters *p) { |
100 | assert(p); | |
101 | ||
102 | free(p->what); | |
103 | free(p->options); | |
104 | free(p->fstype); | |
105 | ||
106 | p->what = p->options = p->fstype = NULL; | |
107 | } | |
108 | ||
87f0e418 | 109 | static void mount_done(Unit *u) { |
ef734fd6 | 110 | Mount *m = MOUNT(u); |
034c6ed7 | 111 | |
ef734fd6 | 112 | assert(m); |
034c6ed7 | 113 | |
e537352b LP |
114 | free(m->where); |
115 | m->where = NULL; | |
f50e0a01 | 116 | |
e537352b LP |
117 | mount_parameters_done(&m->parameters_etc_fstab); |
118 | mount_parameters_done(&m->parameters_proc_self_mountinfo); | |
119 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 120 | |
e537352b LP |
121 | exec_context_done(&m->exec_context); |
122 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
123 | m->control_command = NULL; | |
f50e0a01 | 124 | |
a16e1123 | 125 | mount_unwatch_control_pid(m); |
f50e0a01 | 126 | |
e537352b | 127 | unit_unwatch_timer(u, &m->timer_watch); |
f50e0a01 LP |
128 | } |
129 | ||
cb39ed3f LP |
130 | static MountParameters* get_mount_parameters_configured(Mount *m) { |
131 | assert(m); | |
132 | ||
133 | if (m->from_fragment) | |
134 | return &m->parameters_fragment; | |
135 | else if (m->from_etc_fstab) | |
136 | return &m->parameters_etc_fstab; | |
137 | ||
138 | return NULL; | |
139 | } | |
140 | ||
141 | static MountParameters* get_mount_parameters(Mount *m) { | |
142 | assert(m); | |
143 | ||
144 | if (m->from_proc_self_mountinfo) | |
145 | return &m->parameters_proc_self_mountinfo; | |
146 | ||
147 | return get_mount_parameters_configured(m); | |
148 | } | |
149 | ||
6e2ef85b | 150 | static int mount_add_mount_links(Mount *m) { |
ac155bb8 | 151 | Unit *other; |
b08d03ff | 152 | int r; |
5c78d8e2 | 153 | MountParameters *pm; |
b08d03ff | 154 | |
6e2ef85b | 155 | assert(m); |
b08d03ff | 156 | |
cb39ed3f | 157 | pm = get_mount_parameters_configured(m); |
5c78d8e2 | 158 | |
6e2ef85b LP |
159 | /* Adds in links to other mount points that might lie below or |
160 | * above us in the hierarchy */ | |
e537352b | 161 | |
1124fe6f | 162 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_MOUNT]) { |
595ed347 | 163 | Mount *n = MOUNT(other); |
5c78d8e2 | 164 | MountParameters *pn; |
07b0b134 | 165 | |
6e2ef85b LP |
166 | if (n == m) |
167 | continue; | |
b08d03ff | 168 | |
1124fe6f | 169 | if (UNIT(n)->load_state != UNIT_LOADED) |
6e2ef85b | 170 | continue; |
b08d03ff | 171 | |
cb39ed3f | 172 | pn = get_mount_parameters_configured(n); |
5c78d8e2 | 173 | |
6e2ef85b | 174 | if (path_startswith(m->where, n->where)) { |
b08d03ff | 175 | |
6e2ef85b LP |
176 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) |
177 | return r; | |
b08d03ff | 178 | |
cb39ed3f | 179 | if (pn) |
6e2ef85b LP |
180 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
181 | return r; | |
b08d03ff | 182 | |
6e2ef85b | 183 | } else if (path_startswith(n->where, m->where)) { |
b08d03ff | 184 | |
5c78d8e2 LP |
185 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) |
186 | return r; | |
187 | ||
cb39ed3f | 188 | if (pm) |
5c78d8e2 LP |
189 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
190 | return r; | |
191 | ||
192 | } else if (pm && path_startswith(pm->what, n->where)) { | |
193 | ||
194 | if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0) | |
6e2ef85b LP |
195 | return r; |
196 | ||
cb39ed3f LP |
197 | if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0) |
198 | return r; | |
5c78d8e2 LP |
199 | |
200 | } else if (pn && path_startswith(pn->what, m->where)) { | |
201 | ||
202 | if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0) | |
203 | return r; | |
204 | ||
cb39ed3f LP |
205 | if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0) |
206 | return r; | |
6e2ef85b LP |
207 | } |
208 | } | |
b08d03ff LP |
209 | |
210 | return 0; | |
211 | } | |
212 | ||
6e2ef85b | 213 | static int mount_add_swap_links(Mount *m) { |
ac155bb8 | 214 | Unit *other; |
b08d03ff LP |
215 | int r; |
216 | ||
6e2ef85b | 217 | assert(m); |
b08d03ff | 218 | |
1124fe6f | 219 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SWAP]) |
595ed347 | 220 | if ((r = swap_add_one_mount_link(SWAP(other), m)) < 0) |
6e2ef85b | 221 | return r; |
b08d03ff | 222 | |
6e2ef85b LP |
223 | return 0; |
224 | } | |
b08d03ff | 225 | |
01f78473 | 226 | static int mount_add_path_links(Mount *m) { |
ac155bb8 | 227 | Unit *other; |
01f78473 LP |
228 | int r; |
229 | ||
230 | assert(m); | |
231 | ||
1124fe6f | 232 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_PATH]) |
595ed347 | 233 | if ((r = path_add_one_mount_link(PATH(other), m)) < 0) |
01f78473 LP |
234 | return r; |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
6e2ef85b | 239 | static int mount_add_automount_links(Mount *m) { |
ac155bb8 | 240 | Unit *other; |
6e2ef85b | 241 | int r; |
e537352b | 242 | |
6e2ef85b | 243 | assert(m); |
b08d03ff | 244 | |
1124fe6f | 245 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_AUTOMOUNT]) |
595ed347 | 246 | if ((r = automount_add_one_mount_link(AUTOMOUNT(other), m)) < 0) |
6e2ef85b | 247 | return r; |
b08d03ff | 248 | |
6e2ef85b LP |
249 | return 0; |
250 | } | |
b08d03ff | 251 | |
6e2ef85b | 252 | static int mount_add_socket_links(Mount *m) { |
ac155bb8 | 253 | Unit *other; |
6e2ef85b | 254 | int r; |
b08d03ff | 255 | |
6e2ef85b | 256 | assert(m); |
b08d03ff | 257 | |
1124fe6f | 258 | LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SOCKET]) |
595ed347 | 259 | if ((r = socket_add_one_mount_link(SOCKET(other), m)) < 0) |
6e2ef85b | 260 | return r; |
b08d03ff LP |
261 | |
262 | return 0; | |
263 | } | |
264 | ||
07b0b134 | 265 | static char* mount_test_option(const char *haystack, const char *needle) { |
e537352b LP |
266 | struct mntent me; |
267 | ||
268 | assert(needle); | |
269 | ||
270 | /* Like glibc's hasmntopt(), but works on a string, not a | |
271 | * struct mntent */ | |
272 | ||
273 | if (!haystack) | |
274 | return false; | |
275 | ||
276 | zero(me); | |
277 | me.mnt_opts = (char*) haystack; | |
278 | ||
07b0b134 | 279 | return hasmntopt(&me, needle); |
e537352b LP |
280 | } |
281 | ||
cb39ed3f LP |
282 | static bool mount_is_network(MountParameters *p) { |
283 | assert(p); | |
284 | ||
285 | if (mount_test_option(p->options, "_netdev")) | |
286 | return true; | |
287 | ||
288 | if (p->fstype && fstype_is_network(p->fstype)) | |
289 | return true; | |
290 | ||
291 | return false; | |
292 | } | |
293 | ||
294 | static bool mount_is_bind(MountParameters *p) { | |
295 | assert(p); | |
296 | ||
297 | if (mount_test_option(p->options, "bind")) | |
298 | return true; | |
299 | ||
300 | if (p->fstype && streq(p->fstype, "bind")) | |
301 | return true; | |
302 | ||
303 | return false; | |
304 | } | |
305 | ||
306 | static bool needs_quota(MountParameters *p) { | |
307 | assert(p); | |
308 | ||
309 | if (mount_is_network(p)) | |
310 | return false; | |
311 | ||
312 | if (mount_is_bind(p)) | |
313 | return false; | |
314 | ||
315 | return mount_test_option(p->options, "usrquota") || | |
d3354f66 LP |
316 | mount_test_option(p->options, "grpquota") || |
317 | mount_test_option(p->options, "quota") || | |
318 | mount_test_option(p->options, "usrjquota") || | |
319 | mount_test_option(p->options, "grpjquota"); | |
cb39ed3f LP |
320 | } |
321 | ||
155da457 | 322 | static int mount_add_fstab_links(Mount *m) { |
7fc2a89a | 323 | const char *target, *after = NULL, *after2 = NULL; |
e537352b | 324 | MountParameters *p; |
a16e1123 | 325 | Unit *tu; |
e537352b | 326 | int r; |
d9143006 | 327 | bool noauto, nofail, handle, automount; |
e537352b LP |
328 | |
329 | assert(m); | |
330 | ||
1124fe6f | 331 | if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) |
155da457 LP |
332 | return 0; |
333 | ||
cb39ed3f | 334 | if (!(p = get_mount_parameters_configured(m))) |
e537352b LP |
335 | return 0; |
336 | ||
155da457 LP |
337 | if (p != &m->parameters_etc_fstab) |
338 | return 0; | |
339 | ||
340 | noauto = !!mount_test_option(p->options, "noauto"); | |
d9143006 | 341 | nofail = !!mount_test_option(p->options, "nofail"); |
155da457 LP |
342 | automount = |
343 | mount_test_option(p->options, "comment=systemd.automount") || | |
344 | mount_test_option(p->options, "x-systemd-automount"); | |
d4a7e06d | 345 | handle = |
155da457 | 346 | automount || |
d4a7e06d LP |
347 | mount_test_option(p->options, "comment=systemd.mount") || |
348 | mount_test_option(p->options, "x-systemd-mount") || | |
1124fe6f | 349 | UNIT(m)->manager->mount_auto; |
e537352b | 350 | |
cb39ed3f | 351 | if (mount_is_network(p)) { |
e537352b | 352 | target = SPECIAL_REMOTE_FS_TARGET; |
21e557ed | 353 | after = SPECIAL_REMOTE_FS_PRE_TARGET; |
7fc2a89a | 354 | after2 = SPECIAL_NETWORK_TARGET; |
21e557ed | 355 | } else { |
e537352b | 356 | target = SPECIAL_LOCAL_FS_TARGET; |
21e557ed LP |
357 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
358 | } | |
e537352b | 359 | |
1124fe6f | 360 | if ((r = manager_load_unit(UNIT(m)->manager, target, NULL, NULL, &tu)) < 0) |
e537352b LP |
361 | return r; |
362 | ||
a55da3cd | 363 | if (after) |
50483512 | 364 | if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true)) < 0) |
a55da3cd LP |
365 | return r; |
366 | ||
7fc2a89a LP |
367 | if (after2) |
368 | if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after2, NULL, true)) < 0) | |
369 | return r; | |
370 | ||
155da457 | 371 | if (automount) { |
a16e1123 LP |
372 | Unit *am; |
373 | ||
374 | if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0) | |
9fcc065a | 375 | return r; |
e537352b | 376 | |
155da457 LP |
377 | /* If auto is configured as well also pull in the |
378 | * mount right-away, but don't rely on it. */ | |
379 | if (!noauto) /* automount + auto */ | |
380 | if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0) | |
381 | return r; | |
382 | ||
383 | /* Install automount unit */ | |
384 | if (!nofail) /* automount + fail */ | |
ac155bb8 | 385 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, am, true); |
155da457 | 386 | else /* automount + nofail */ |
ac155bb8 | 387 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, am, true); |
155da457 LP |
388 | |
389 | } else if (handle && !noauto) { | |
a16e1123 | 390 | |
81bf310e LP |
391 | /* Automatically add mount points that aren't natively |
392 | * configured to local-fs.target */ | |
a16e1123 | 393 | |
155da457 LP |
394 | if (!nofail) /* auto + fail */ |
395 | return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true); | |
396 | else /* auto + nofail */ | |
397 | return unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true); | |
a16e1123 | 398 | } |
155da457 LP |
399 | |
400 | return 0; | |
e537352b LP |
401 | } |
402 | ||
173a8d04 LP |
403 | static int mount_add_device_links(Mount *m) { |
404 | MountParameters *p; | |
9fff8a1f | 405 | int r; |
173a8d04 LP |
406 | |
407 | assert(m); | |
408 | ||
cb39ed3f | 409 | if (!(p = get_mount_parameters_configured(m))) |
173a8d04 LP |
410 | return 0; |
411 | ||
9fff8a1f | 412 | if (!p->what) |
173a8d04 | 413 | return 0; |
5c78d8e2 | 414 | |
155da457 LP |
415 | if (!mount_is_bind(p) && |
416 | !path_equal(m->where, "/") && | |
417 | p == &m->parameters_etc_fstab) { | |
9fff8a1f | 418 | bool nofail, noauto; |
173a8d04 | 419 | |
155da457 | 420 | noauto = !!mount_test_option(p->options, "noauto"); |
9fff8a1f LP |
421 | nofail = !!mount_test_option(p->options, "nofail"); |
422 | ||
423 | if ((r = unit_add_node_link(UNIT(m), p->what, | |
424 | !noauto && nofail && | |
ac155bb8 | 425 | UNIT(m)->manager->running_as == MANAGER_SYSTEM)) < 0) |
9fff8a1f LP |
426 | return r; |
427 | } | |
428 | ||
491ad5dc | 429 | if (p->passno > 0 && |
ff2e0f05 | 430 | !mount_is_bind(p) && |
ac155bb8 | 431 | UNIT(m)->manager->running_as == MANAGER_SYSTEM && |
b65a25f2 | 432 | !path_equal(m->where, "/")) { |
9fff8a1f LP |
433 | char *name; |
434 | Unit *fsck; | |
435 | /* Let's add in the fsck service */ | |
173a8d04 | 436 | |
a9e1f5ec | 437 | /* aka SPECIAL_FSCK_SERVICE */ |
9fff8a1f LP |
438 | if (!(name = unit_name_from_path_instance("fsck", p->what, ".service"))) |
439 | return -ENOMEM; | |
440 | ||
1124fe6f | 441 | if ((r = manager_load_unit_prepare(UNIT(m)->manager, name, NULL, NULL, &fsck)) < 0) { |
9fff8a1f LP |
442 | log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); |
443 | free(name); | |
444 | return r; | |
445 | } | |
446 | ||
447 | free(name); | |
448 | ||
449 | SERVICE(fsck)->fsck_passno = p->passno; | |
450 | ||
0355825f | 451 | if ((r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true)) < 0) |
9fff8a1f LP |
452 | return r; |
453 | } | |
454 | ||
455 | return 0; | |
173a8d04 LP |
456 | } |
457 | ||
2edd4434 LP |
458 | static int mount_add_default_dependencies(Mount *m) { |
459 | int r; | |
9ddc4a26 | 460 | MountParameters *p; |
2edd4434 LP |
461 | |
462 | assert(m); | |
463 | ||
1124fe6f | 464 | if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) |
9ddc4a26 | 465 | return 0; |
cb39ed3f | 466 | |
9ddc4a26 MS |
467 | p = get_mount_parameters_configured(m); |
468 | if (p && needs_quota(p)) { | |
469 | if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true)) < 0 || | |
470 | (r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true)) < 0) | |
471 | return r; | |
472 | } | |
2edd4434 | 473 | |
9ddc4a26 | 474 | if (!path_equal(m->where, "/")) |
ead8e478 | 475 | if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0) |
75d287d3 | 476 | return r; |
2edd4434 LP |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
f4c05147 | 481 | static int mount_fix_timeouts(Mount *m) { |
8024c3a7 LP |
482 | MountParameters *p; |
483 | const char *timeout = NULL; | |
484 | Unit *other; | |
485 | Iterator i; | |
486 | usec_t u; | |
f4c05147 LP |
487 | char *t; |
488 | int r; | |
8024c3a7 LP |
489 | |
490 | assert(m); | |
491 | ||
492 | if (!(p = get_mount_parameters_configured(m))) | |
f4c05147 | 493 | return 0; |
8024c3a7 LP |
494 | |
495 | /* Allow configuration how long we wait for a device that | |
496 | * backs a mount point to show up. This is useful to support | |
497 | * endless device timeouts for devices that show up only after | |
498 | * user input, like crypto devices. */ | |
499 | ||
500 | if ((timeout = mount_test_option(p->options, "comment=systemd.device-timeout"))) | |
501 | timeout += 31; | |
502 | else if ((timeout = mount_test_option(p->options, "x-systemd-device-timeout"))) | |
503 | timeout += 25; | |
504 | else | |
f4c05147 LP |
505 | return 0; |
506 | ||
507 | t = strndup(timeout, strcspn(timeout, ",;" WHITESPACE)); | |
508 | if (!t) | |
509 | return -ENOMEM; | |
8024c3a7 | 510 | |
f4c05147 LP |
511 | r = parse_usec(t, &u); |
512 | free(t); | |
513 | ||
514 | if (r < 0) { | |
8024c3a7 | 515 | log_warning("Failed to parse timeout for %s, ignoring: %s", m->where, timeout); |
f4c05147 | 516 | return r; |
8024c3a7 LP |
517 | } |
518 | ||
1124fe6f | 519 | SET_FOREACH(other, UNIT(m)->dependencies[UNIT_AFTER], i) { |
ac155bb8 | 520 | if (other->type != UNIT_DEVICE) |
8024c3a7 LP |
521 | continue; |
522 | ||
ac155bb8 | 523 | other->job_timeout = u; |
8024c3a7 | 524 | } |
f4c05147 LP |
525 | |
526 | return 0; | |
8024c3a7 LP |
527 | } |
528 | ||
8d567588 LP |
529 | static int mount_verify(Mount *m) { |
530 | bool b; | |
531 | char *e; | |
532 | assert(m); | |
533 | ||
1124fe6f | 534 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
535 | return 0; |
536 | ||
8cbef760 LP |
537 | if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo) |
538 | return -ENOENT; | |
539 | ||
a16e1123 | 540 | if (!(e = unit_name_from_path(m->where, ".mount"))) |
8d567588 LP |
541 | return -ENOMEM; |
542 | ||
543 | b = unit_has_name(UNIT(m), e); | |
544 | free(e); | |
545 | ||
546 | if (!b) { | |
1124fe6f | 547 | log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->id); |
8d567588 LP |
548 | return -EINVAL; |
549 | } | |
550 | ||
33ff02c9 LP |
551 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
552 | log_error("Cannot create mount unit for API file system %s. Refusing.", m->where); | |
553 | return -EINVAL; | |
554 | } | |
555 | ||
1124fe6f MS |
556 | if (UNIT(m)->fragment_path && !m->parameters_fragment.what) { |
557 | log_error("%s's What setting is missing. Refusing.", UNIT(m)->id); | |
4e85aff4 LP |
558 | return -EBADMSG; |
559 | } | |
560 | ||
2e22afe9 | 561 | if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) { |
1124fe6f | 562 | log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(m)->id); |
4d0e5dbd LP |
563 | return -EINVAL; |
564 | } | |
565 | ||
8d567588 LP |
566 | return 0; |
567 | } | |
568 | ||
e537352b LP |
569 | static int mount_load(Unit *u) { |
570 | Mount *m = MOUNT(u); | |
571 | int r; | |
572 | ||
573 | assert(u); | |
ac155bb8 | 574 | assert(u->load_state == UNIT_STUB); |
e537352b LP |
575 | |
576 | if ((r = unit_load_fragment_and_dropin_optional(u)) < 0) | |
577 | return r; | |
578 | ||
579 | /* This is a new unit? Then let's add in some extras */ | |
ac155bb8 | 580 | if (u->load_state == UNIT_LOADED) { |
27abbe82 LP |
581 | if ((r = unit_add_exec_dependencies(u, &m->exec_context)) < 0) |
582 | return r; | |
583 | ||
1124fe6f | 584 | if (UNIT(m)->fragment_path) |
4e85aff4 | 585 | m->from_fragment = true; |
e537352b | 586 | |
a16e1123 | 587 | if (!m->where) |
ac155bb8 | 588 | if (!(m->where = unit_name_to_path(u->id))) |
a16e1123 LP |
589 | return -ENOMEM; |
590 | ||
591 | path_kill_slashes(m->where); | |
592 | ||
1124fe6f | 593 | if (!UNIT(m)->description) |
4e85aff4 LP |
594 | if ((r = unit_set_description(u, m->where)) < 0) |
595 | return r; | |
e537352b | 596 | |
173a8d04 LP |
597 | if ((r = mount_add_device_links(m)) < 0) |
598 | return r; | |
6e2ef85b LP |
599 | |
600 | if ((r = mount_add_mount_links(m)) < 0) | |
601 | return r; | |
602 | ||
603 | if ((r = mount_add_socket_links(m)) < 0) | |
604 | return r; | |
605 | ||
606 | if ((r = mount_add_swap_links(m)) < 0) | |
e537352b LP |
607 | return r; |
608 | ||
01f78473 LP |
609 | if ((r = mount_add_path_links(m)) < 0) |
610 | return r; | |
611 | ||
6e2ef85b | 612 | if ((r = mount_add_automount_links(m)) < 0) |
e537352b LP |
613 | return r; |
614 | ||
155da457 | 615 | if ((r = mount_add_fstab_links(m)) < 0) |
e537352b | 616 | return r; |
4e67ddd6 | 617 | |
1124fe6f | 618 | if (UNIT(m)->default_dependencies) |
2edd4434 | 619 | if ((r = mount_add_default_dependencies(m)) < 0) |
4e67ddd6 | 620 | return r; |
8024c3a7 | 621 | |
155da457 LP |
622 | if ((r = unit_add_default_cgroups(u)) < 0) |
623 | return r; | |
624 | ||
8024c3a7 | 625 | mount_fix_timeouts(m); |
e537352b LP |
626 | } |
627 | ||
8d567588 | 628 | return mount_verify(m); |
e537352b LP |
629 | } |
630 | ||
a16e1123 LP |
631 | static int mount_notify_automount(Mount *m, int status) { |
632 | Unit *p; | |
633 | int r; | |
57020a3a | 634 | Iterator i; |
a16e1123 LP |
635 | |
636 | assert(m); | |
637 | ||
1124fe6f | 638 | SET_FOREACH(p, UNIT(m)->dependencies[UNIT_TRIGGERED_BY], i) |
ac155bb8 | 639 | if (p->type == UNIT_AUTOMOUNT) { |
57020a3a LP |
640 | r = automount_send_ready(AUTOMOUNT(p), status); |
641 | if (r < 0) | |
642 | return r; | |
643 | } | |
a16e1123 | 644 | |
57020a3a | 645 | return 0; |
a16e1123 LP |
646 | } |
647 | ||
e537352b LP |
648 | static void mount_set_state(Mount *m, MountState state) { |
649 | MountState old_state; | |
650 | assert(m); | |
651 | ||
652 | old_state = m->state; | |
653 | m->state = state; | |
654 | ||
655 | if (state != MOUNT_MOUNTING && | |
656 | state != MOUNT_MOUNTING_DONE && | |
657 | state != MOUNT_REMOUNTING && | |
658 | state != MOUNT_UNMOUNTING && | |
659 | state != MOUNT_MOUNTING_SIGTERM && | |
660 | state != MOUNT_MOUNTING_SIGKILL && | |
661 | state != MOUNT_UNMOUNTING_SIGTERM && | |
662 | state != MOUNT_UNMOUNTING_SIGKILL && | |
663 | state != MOUNT_REMOUNTING_SIGTERM && | |
664 | state != MOUNT_REMOUNTING_SIGKILL) { | |
665 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
a16e1123 | 666 | mount_unwatch_control_pid(m); |
e537352b | 667 | m->control_command = NULL; |
a16e1123 | 668 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
669 | } |
670 | ||
8d567588 LP |
671 | if (state == MOUNT_MOUNTED || |
672 | state == MOUNT_REMOUNTING) | |
673 | mount_notify_automount(m, 0); | |
674 | else if (state == MOUNT_DEAD || | |
675 | state == MOUNT_UNMOUNTING || | |
676 | state == MOUNT_MOUNTING_SIGTERM || | |
677 | state == MOUNT_MOUNTING_SIGKILL || | |
678 | state == MOUNT_REMOUNTING_SIGTERM || | |
679 | state == MOUNT_REMOUNTING_SIGKILL || | |
680 | state == MOUNT_UNMOUNTING_SIGTERM || | |
681 | state == MOUNT_UNMOUNTING_SIGKILL || | |
fdf20a31 | 682 | state == MOUNT_FAILED) |
8d567588 LP |
683 | mount_notify_automount(m, -ENODEV); |
684 | ||
e537352b | 685 | if (state != old_state) |
40d50879 | 686 | log_debug("%s changed %s -> %s", |
1124fe6f | 687 | UNIT(m)->id, |
a16e1123 LP |
688 | mount_state_to_string(old_state), |
689 | mount_state_to_string(state)); | |
e537352b | 690 | |
e2f3b44c LP |
691 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], !m->reload_failure); |
692 | m->reload_failure = false; | |
e537352b LP |
693 | } |
694 | ||
695 | static int mount_coldplug(Unit *u) { | |
696 | Mount *m = MOUNT(u); | |
a16e1123 LP |
697 | MountState new_state = MOUNT_DEAD; |
698 | int r; | |
e537352b LP |
699 | |
700 | assert(m); | |
701 | assert(m->state == MOUNT_DEAD); | |
702 | ||
a16e1123 LP |
703 | if (m->deserialized_state != m->state) |
704 | new_state = m->deserialized_state; | |
705 | else if (m->from_proc_self_mountinfo) | |
706 | new_state = MOUNT_MOUNTED; | |
e537352b | 707 | |
a16e1123 | 708 | if (new_state != m->state) { |
e537352b | 709 | |
a16e1123 LP |
710 | if (new_state == MOUNT_MOUNTING || |
711 | new_state == MOUNT_MOUNTING_DONE || | |
712 | new_state == MOUNT_REMOUNTING || | |
713 | new_state == MOUNT_UNMOUNTING || | |
714 | new_state == MOUNT_MOUNTING_SIGTERM || | |
715 | new_state == MOUNT_MOUNTING_SIGKILL || | |
716 | new_state == MOUNT_UNMOUNTING_SIGTERM || | |
717 | new_state == MOUNT_UNMOUNTING_SIGKILL || | |
718 | new_state == MOUNT_REMOUNTING_SIGTERM || | |
719 | new_state == MOUNT_REMOUNTING_SIGKILL) { | |
e537352b | 720 | |
a16e1123 LP |
721 | if (m->control_pid <= 0) |
722 | return -EBADMSG; | |
e537352b | 723 | |
a16e1123 LP |
724 | if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0) |
725 | return r; | |
e537352b | 726 | |
a16e1123 LP |
727 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
728 | return r; | |
729 | } | |
e537352b | 730 | |
a16e1123 LP |
731 | mount_set_state(m, new_state); |
732 | } | |
e537352b LP |
733 | |
734 | return 0; | |
e537352b LP |
735 | } |
736 | ||
737 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
738 | Mount *m = MOUNT(u); | |
739 | MountParameters *p; | |
740 | ||
741 | assert(m); | |
742 | assert(f); | |
743 | ||
cb39ed3f | 744 | p = get_mount_parameters(m); |
e537352b LP |
745 | |
746 | fprintf(f, | |
747 | "%sMount State: %s\n" | |
748 | "%sWhere: %s\n" | |
749 | "%sWhat: %s\n" | |
750 | "%sFile System Type: %s\n" | |
751 | "%sOptions: %s\n" | |
752 | "%sFrom /etc/fstab: %s\n" | |
753 | "%sFrom /proc/self/mountinfo: %s\n" | |
754 | "%sFrom fragment: %s\n" | |
3e5235b0 | 755 | "%sDirectoryMode: %04o\n", |
a16e1123 | 756 | prefix, mount_state_to_string(m->state), |
e537352b LP |
757 | prefix, m->where, |
758 | prefix, strna(p->what), | |
759 | prefix, strna(p->fstype), | |
760 | prefix, strna(p->options), | |
761 | prefix, yes_no(m->from_etc_fstab), | |
762 | prefix, yes_no(m->from_proc_self_mountinfo), | |
763 | prefix, yes_no(m->from_fragment), | |
3e5235b0 | 764 | prefix, m->directory_mode); |
e537352b LP |
765 | |
766 | if (m->control_pid > 0) | |
767 | fprintf(f, | |
bb00e604 LP |
768 | "%sControl PID: %lu\n", |
769 | prefix, (unsigned long) m->control_pid); | |
e537352b LP |
770 | |
771 | exec_context_dump(&m->exec_context, f, prefix); | |
772 | } | |
773 | ||
a16e1123 LP |
774 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
775 | pid_t pid; | |
776 | int r; | |
777 | ||
778 | assert(m); | |
779 | assert(c); | |
780 | assert(_pid); | |
781 | ||
782 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) | |
783 | goto fail; | |
784 | ||
785 | if ((r = exec_spawn(c, | |
786 | NULL, | |
787 | &m->exec_context, | |
788 | NULL, 0, | |
1124fe6f | 789 | UNIT(m)->manager->environment, |
a16e1123 LP |
790 | true, |
791 | true, | |
1e3ad081 | 792 | true, |
1124fe6f MS |
793 | UNIT(m)->manager->confirm_spawn, |
794 | UNIT(m)->cgroup_bondings, | |
795 | UNIT(m)->cgroup_attributes, | |
a16e1123 LP |
796 | &pid)) < 0) |
797 | goto fail; | |
798 | ||
799 | if ((r = unit_watch_pid(UNIT(m), pid)) < 0) | |
800 | /* FIXME: we need to do something here */ | |
801 | goto fail; | |
802 | ||
803 | *_pid = pid; | |
804 | ||
805 | return 0; | |
806 | ||
807 | fail: | |
808 | unit_unwatch_timer(UNIT(m), &m->timer_watch); | |
809 | ||
810 | return r; | |
811 | } | |
812 | ||
e537352b LP |
813 | static void mount_enter_dead(Mount *m, bool success) { |
814 | assert(m); | |
815 | ||
816 | if (!success) | |
817 | m->failure = true; | |
818 | ||
fdf20a31 | 819 | mount_set_state(m, m->failure ? MOUNT_FAILED : MOUNT_DEAD); |
e537352b LP |
820 | } |
821 | ||
80876c20 LP |
822 | static void mount_enter_mounted(Mount *m, bool success) { |
823 | assert(m); | |
824 | ||
825 | if (!success) | |
826 | m->failure = true; | |
827 | ||
828 | mount_set_state(m, MOUNT_MOUNTED); | |
829 | } | |
830 | ||
e537352b LP |
831 | static void mount_enter_signal(Mount *m, MountState state, bool success) { |
832 | int r; | |
ca949c9d LP |
833 | Set *pid_set = NULL; |
834 | bool wait_for_exit = false; | |
e537352b LP |
835 | |
836 | assert(m); | |
837 | ||
838 | if (!success) | |
839 | m->failure = true; | |
840 | ||
2e22afe9 | 841 | if (m->exec_context.kill_mode != KILL_NONE) { |
80876c20 LP |
842 | int sig = (state == MOUNT_MOUNTING_SIGTERM || |
843 | state == MOUNT_UNMOUNTING_SIGTERM || | |
2e22afe9 | 844 | state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL; |
e537352b | 845 | |
ca949c9d | 846 | if (m->control_pid > 0) { |
cd25cce9 | 847 | if (kill_and_sigcont(m->control_pid, sig) < 0 && errno != ESRCH) |
e537352b | 848 | |
ca949c9d LP |
849 | log_warning("Failed to kill control process %li: %m", (long) m->control_pid); |
850 | else | |
851 | wait_for_exit = true; | |
e537352b LP |
852 | } |
853 | ||
ca949c9d | 854 | if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) { |
2e22afe9 | 855 | |
ca949c9d LP |
856 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { |
857 | r = -ENOMEM; | |
e537352b LP |
858 | goto fail; |
859 | } | |
ca949c9d LP |
860 | |
861 | /* Exclude the control pid from being killed via the cgroup */ | |
862 | if (m->control_pid > 0) | |
863 | if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) | |
864 | goto fail; | |
865 | ||
1124fe6f | 866 | if ((r = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, sig, true, pid_set)) < 0) { |
ca949c9d LP |
867 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) |
868 | log_warning("Failed to kill control group: %s", strerror(-r)); | |
869 | } else if (r > 0) | |
870 | wait_for_exit = true; | |
871 | ||
872 | set_free(pid_set); | |
da19d5c1 | 873 | pid_set = NULL; |
ca949c9d | 874 | } |
e537352b LP |
875 | } |
876 | ||
ca949c9d | 877 | if (wait_for_exit) { |
80876c20 LP |
878 | if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0) |
879 | goto fail; | |
e537352b | 880 | |
80876c20 LP |
881 | mount_set_state(m, state); |
882 | } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) | |
883 | mount_enter_mounted(m, true); | |
884 | else | |
e537352b LP |
885 | mount_enter_dead(m, true); |
886 | ||
887 | return; | |
888 | ||
889 | fail: | |
1124fe6f | 890 | log_warning("%s failed to kill processes: %s", UNIT(m)->id, strerror(-r)); |
e537352b | 891 | |
80876c20 LP |
892 | if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL) |
893 | mount_enter_mounted(m, false); | |
894 | else | |
895 | mount_enter_dead(m, false); | |
ca949c9d LP |
896 | |
897 | if (pid_set) | |
898 | set_free(pid_set); | |
e537352b LP |
899 | } |
900 | ||
901 | static void mount_enter_unmounting(Mount *m, bool success) { | |
e537352b LP |
902 | int r; |
903 | ||
904 | assert(m); | |
905 | ||
906 | if (!success) | |
907 | m->failure = true; | |
908 | ||
a16e1123 LP |
909 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
910 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b LP |
911 | |
912 | if ((r = exec_command_set( | |
a16e1123 | 913 | m->control_command, |
e537352b LP |
914 | "/bin/umount", |
915 | m->where, | |
916 | NULL)) < 0) | |
917 | goto fail; | |
918 | ||
a16e1123 | 919 | mount_unwatch_control_pid(m); |
5e94833f | 920 | |
a16e1123 | 921 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
922 | goto fail; |
923 | ||
924 | mount_set_state(m, MOUNT_UNMOUNTING); | |
925 | ||
926 | return; | |
927 | ||
928 | fail: | |
1124fe6f | 929 | log_warning("%s failed to run 'umount' task: %s", UNIT(m)->id, strerror(-r)); |
e537352b LP |
930 | mount_enter_mounted(m, false); |
931 | } | |
932 | ||
8d567588 | 933 | static void mount_enter_mounting(Mount *m) { |
e537352b | 934 | int r; |
cb39ed3f | 935 | MountParameters *p; |
e537352b LP |
936 | |
937 | assert(m); | |
938 | ||
a16e1123 LP |
939 | m->control_command_id = MOUNT_EXEC_MOUNT; |
940 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 941 | |
3e5235b0 LP |
942 | mkdir_p(m->where, m->directory_mode); |
943 | ||
cb39ed3f LP |
944 | /* Create the source directory for bind-mounts if needed */ |
945 | p = get_mount_parameters_configured(m); | |
946 | if (p && mount_is_bind(p)) | |
947 | mkdir_p(p->what, m->directory_mode); | |
2b583ce6 | 948 | |
e537352b LP |
949 | if (m->from_fragment) |
950 | r = exec_command_set( | |
a16e1123 | 951 | m->control_command, |
e537352b LP |
952 | "/bin/mount", |
953 | m->parameters_fragment.what, | |
954 | m->where, | |
40b8a332 | 955 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
8d567588 | 956 | m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options, |
e537352b LP |
957 | NULL); |
958 | else if (m->from_etc_fstab) | |
959 | r = exec_command_set( | |
a16e1123 | 960 | m->control_command, |
e537352b LP |
961 | "/bin/mount", |
962 | m->where, | |
963 | NULL); | |
964 | else | |
965 | r = -ENOENT; | |
966 | ||
967 | if (r < 0) | |
968 | goto fail; | |
969 | ||
a16e1123 | 970 | mount_unwatch_control_pid(m); |
5e94833f | 971 | |
a16e1123 | 972 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
973 | goto fail; |
974 | ||
975 | mount_set_state(m, MOUNT_MOUNTING); | |
976 | ||
977 | return; | |
978 | ||
979 | fail: | |
1124fe6f | 980 | log_warning("%s failed to run 'mount' task: %s", UNIT(m)->id, strerror(-r)); |
e537352b LP |
981 | mount_enter_dead(m, false); |
982 | } | |
983 | ||
8d567588 | 984 | static void mount_enter_mounting_done(Mount *m) { |
e537352b LP |
985 | assert(m); |
986 | ||
e537352b LP |
987 | mount_set_state(m, MOUNT_MOUNTING_DONE); |
988 | } | |
989 | ||
990 | static void mount_enter_remounting(Mount *m, bool success) { | |
e537352b LP |
991 | int r; |
992 | ||
993 | assert(m); | |
994 | ||
995 | if (!success) | |
996 | m->failure = true; | |
997 | ||
a16e1123 LP |
998 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
999 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b LP |
1000 | |
1001 | if (m->from_fragment) { | |
1002 | char *buf = NULL; | |
1003 | const char *o; | |
1004 | ||
1005 | if (m->parameters_fragment.options) { | |
1006 | if (!(buf = strappend("remount,", m->parameters_fragment.options))) { | |
1007 | r = -ENOMEM; | |
1008 | goto fail; | |
1009 | } | |
1010 | ||
1011 | o = buf; | |
1012 | } else | |
1013 | o = "remount"; | |
1014 | ||
1015 | r = exec_command_set( | |
a16e1123 | 1016 | m->control_command, |
e537352b LP |
1017 | "/bin/mount", |
1018 | m->parameters_fragment.what, | |
1019 | m->where, | |
40b8a332 | 1020 | "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", |
e537352b LP |
1021 | "-o", o, |
1022 | NULL); | |
1023 | ||
1024 | free(buf); | |
1025 | } else if (m->from_etc_fstab) | |
1026 | r = exec_command_set( | |
a16e1123 | 1027 | m->control_command, |
e537352b LP |
1028 | "/bin/mount", |
1029 | m->where, | |
1030 | "-o", "remount", | |
1031 | NULL); | |
1032 | else | |
1033 | r = -ENOENT; | |
1034 | ||
60b912f6 | 1035 | if (r < 0) |
e537352b | 1036 | goto fail; |
e537352b | 1037 | |
a16e1123 | 1038 | mount_unwatch_control_pid(m); |
5e94833f | 1039 | |
a16e1123 | 1040 | if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0) |
e537352b LP |
1041 | goto fail; |
1042 | ||
1043 | mount_set_state(m, MOUNT_REMOUNTING); | |
1044 | ||
1045 | return; | |
1046 | ||
1047 | fail: | |
1124fe6f | 1048 | log_warning("%s failed to run 'remount' task: %s", UNIT(m)->id, strerror(-r)); |
e2f3b44c LP |
1049 | m->reload_failure = true; |
1050 | mount_enter_mounted(m, true); | |
e537352b LP |
1051 | } |
1052 | ||
1053 | static int mount_start(Unit *u) { | |
1054 | Mount *m = MOUNT(u); | |
1055 | ||
1056 | assert(m); | |
1057 | ||
1058 | /* We cannot fulfill this request right now, try again later | |
1059 | * please! */ | |
1060 | if (m->state == MOUNT_UNMOUNTING || | |
1061 | m->state == MOUNT_UNMOUNTING_SIGTERM || | |
60b912f6 LP |
1062 | m->state == MOUNT_UNMOUNTING_SIGKILL || |
1063 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1064 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1065 | return -EAGAIN; |
1066 | ||
1067 | /* Already on it! */ | |
60b912f6 | 1068 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1069 | return 0; |
1070 | ||
fdf20a31 | 1071 | assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED); |
e537352b LP |
1072 | |
1073 | m->failure = false; | |
8d567588 | 1074 | mount_enter_mounting(m); |
e537352b LP |
1075 | return 0; |
1076 | } | |
1077 | ||
1078 | static int mount_stop(Unit *u) { | |
1079 | Mount *m = MOUNT(u); | |
1080 | ||
1081 | assert(m); | |
1082 | ||
e537352b LP |
1083 | /* Already on it */ |
1084 | if (m->state == MOUNT_UNMOUNTING || | |
1085 | m->state == MOUNT_UNMOUNTING_SIGKILL || | |
60b912f6 LP |
1086 | m->state == MOUNT_UNMOUNTING_SIGTERM || |
1087 | m->state == MOUNT_MOUNTING_SIGTERM || | |
1088 | m->state == MOUNT_MOUNTING_SIGKILL) | |
e537352b LP |
1089 | return 0; |
1090 | ||
3f6c78dc LP |
1091 | assert(m->state == MOUNT_MOUNTING || |
1092 | m->state == MOUNT_MOUNTING_DONE || | |
1093 | m->state == MOUNT_MOUNTED || | |
3f6c78dc LP |
1094 | m->state == MOUNT_REMOUNTING || |
1095 | m->state == MOUNT_REMOUNTING_SIGTERM || | |
1096 | m->state == MOUNT_REMOUNTING_SIGKILL); | |
e537352b LP |
1097 | |
1098 | mount_enter_unmounting(m, true); | |
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | static int mount_reload(Unit *u) { | |
1103 | Mount *m = MOUNT(u); | |
1104 | ||
1105 | assert(m); | |
1106 | ||
1107 | if (m->state == MOUNT_MOUNTING_DONE) | |
1108 | return -EAGAIN; | |
1109 | ||
1110 | assert(m->state == MOUNT_MOUNTED); | |
1111 | ||
1112 | mount_enter_remounting(m, true); | |
1113 | return 0; | |
1114 | } | |
1115 | ||
a16e1123 LP |
1116 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1117 | Mount *m = MOUNT(u); | |
1118 | ||
1119 | assert(m); | |
1120 | assert(f); | |
1121 | assert(fds); | |
1122 | ||
1123 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
1124 | unit_serialize_item(u, f, "failure", yes_no(m->failure)); | |
1125 | ||
1126 | if (m->control_pid > 0) | |
5925dd3c | 1127 | unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid); |
a16e1123 LP |
1128 | |
1129 | if (m->control_command_id >= 0) | |
1130 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1136 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1137 | |
1138 | assert(u); | |
1139 | assert(key); | |
1140 | assert(value); | |
1141 | assert(fds); | |
1142 | ||
1143 | if (streq(key, "state")) { | |
1144 | MountState state; | |
1145 | ||
1146 | if ((state = mount_state_from_string(value)) < 0) | |
1147 | log_debug("Failed to parse state value %s", value); | |
1148 | else | |
1149 | m->deserialized_state = state; | |
1150 | } else if (streq(key, "failure")) { | |
1151 | int b; | |
1152 | ||
1153 | if ((b = parse_boolean(value)) < 0) | |
1154 | log_debug("Failed to parse failure value %s", value); | |
1155 | else | |
1156 | m->failure = b || m->failure; | |
1157 | ||
1158 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1159 | pid_t pid; |
a16e1123 | 1160 | |
e364ad06 | 1161 | if (parse_pid(value, &pid) < 0) |
a16e1123 LP |
1162 | log_debug("Failed to parse control-pid value %s", value); |
1163 | else | |
5925dd3c | 1164 | m->control_pid = pid; |
a16e1123 LP |
1165 | } else if (streq(key, "control-command")) { |
1166 | MountExecCommand id; | |
1167 | ||
1168 | if ((id = mount_exec_command_from_string(value)) < 0) | |
1169 | log_debug("Failed to parse exec-command value %s", value); | |
1170 | else { | |
1171 | m->control_command_id = id; | |
1172 | m->control_command = m->exec_command + id; | |
1173 | } | |
1174 | ||
1175 | } else | |
1176 | log_debug("Unknown serialization key '%s'", key); | |
1177 | ||
1178 | return 0; | |
1179 | } | |
1180 | ||
e537352b LP |
1181 | static UnitActiveState mount_active_state(Unit *u) { |
1182 | assert(u); | |
1183 | ||
1184 | return state_translation_table[MOUNT(u)->state]; | |
1185 | } | |
1186 | ||
10a94420 LP |
1187 | static const char *mount_sub_state_to_string(Unit *u) { |
1188 | assert(u); | |
1189 | ||
a16e1123 | 1190 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1191 | } |
1192 | ||
701cc384 LP |
1193 | static bool mount_check_gc(Unit *u) { |
1194 | Mount *m = MOUNT(u); | |
1195 | ||
1196 | assert(m); | |
1197 | ||
1198 | return m->from_etc_fstab || m->from_proc_self_mountinfo; | |
1199 | } | |
1200 | ||
e537352b LP |
1201 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1202 | Mount *m = MOUNT(u); | |
1203 | bool success; | |
1204 | ||
1205 | assert(m); | |
1206 | assert(pid >= 0); | |
1207 | ||
8c47c732 LP |
1208 | if (pid != m->control_pid) |
1209 | return; | |
e537352b | 1210 | |
e537352b LP |
1211 | m->control_pid = 0; |
1212 | ||
8c47c732 LP |
1213 | success = is_clean_exit(code, status); |
1214 | m->failure = m->failure || !success; | |
1215 | ||
a16e1123 | 1216 | if (m->control_command) { |
6ea832a2 | 1217 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
a16e1123 LP |
1218 | m->control_command = NULL; |
1219 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1220 | } | |
1221 | ||
92abbefb | 1222 | log_full(success ? LOG_DEBUG : LOG_NOTICE, |
ac155bb8 | 1223 | "%s mount process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status); |
e537352b LP |
1224 | |
1225 | /* Note that mount(8) returning and the kernel sending us a | |
1226 | * mount table change event might happen out-of-order. If an | |
1227 | * operation succeed we assume the kernel will follow soon too | |
1228 | * and already change into the resulting state. If it fails | |
1229 | * we check if the kernel still knows about the mount. and | |
1230 | * change state accordingly. */ | |
1231 | ||
1232 | switch (m->state) { | |
1233 | ||
1234 | case MOUNT_MOUNTING: | |
1235 | case MOUNT_MOUNTING_DONE: | |
1236 | case MOUNT_MOUNTING_SIGKILL: | |
1237 | case MOUNT_MOUNTING_SIGTERM: | |
e537352b | 1238 | |
19b160fa | 1239 | if (success) |
e537352b LP |
1240 | mount_enter_mounted(m, true); |
1241 | else if (m->from_proc_self_mountinfo) | |
1242 | mount_enter_mounted(m, false); | |
1243 | else | |
1244 | mount_enter_dead(m, false); | |
1245 | break; | |
1246 | ||
e2f3b44c LP |
1247 | case MOUNT_REMOUNTING: |
1248 | case MOUNT_REMOUNTING_SIGKILL: | |
1249 | case MOUNT_REMOUNTING_SIGTERM: | |
1250 | ||
1251 | m->reload_failure = !success; | |
1252 | if (m->from_proc_self_mountinfo) | |
1253 | mount_enter_mounted(m, true); | |
1254 | else | |
1255 | mount_enter_dead(m, true); | |
1256 | ||
1257 | break; | |
1258 | ||
e537352b LP |
1259 | case MOUNT_UNMOUNTING: |
1260 | case MOUNT_UNMOUNTING_SIGKILL: | |
1261 | case MOUNT_UNMOUNTING_SIGTERM: | |
1262 | ||
1263 | if (success) | |
1264 | mount_enter_dead(m, true); | |
1265 | else if (m->from_proc_self_mountinfo) | |
1266 | mount_enter_mounted(m, false); | |
1267 | else | |
1268 | mount_enter_dead(m, false); | |
1269 | break; | |
1270 | ||
1271 | default: | |
1272 | assert_not_reached("Uh, control process died at wrong time."); | |
1273 | } | |
c4e2ceae LP |
1274 | |
1275 | /* Notify clients about changed exit status */ | |
1276 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1277 | } |
1278 | ||
1279 | static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) { | |
1280 | Mount *m = MOUNT(u); | |
1281 | ||
1282 | assert(m); | |
1283 | assert(elapsed == 1); | |
1284 | assert(w == &m->timer_watch); | |
1285 | ||
1286 | switch (m->state) { | |
1287 | ||
1288 | case MOUNT_MOUNTING: | |
1289 | case MOUNT_MOUNTING_DONE: | |
ac155bb8 | 1290 | log_warning("%s mounting timed out. Stopping.", u->id); |
e537352b LP |
1291 | mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false); |
1292 | break; | |
1293 | ||
1294 | case MOUNT_REMOUNTING: | |
ac155bb8 | 1295 | log_warning("%s remounting timed out. Stopping.", u->id); |
e2f3b44c LP |
1296 | m->reload_failure = true; |
1297 | mount_enter_mounted(m, true); | |
e537352b LP |
1298 | break; |
1299 | ||
1300 | case MOUNT_UNMOUNTING: | |
ac155bb8 | 1301 | log_warning("%s unmounting timed out. Stopping.", u->id); |
e537352b LP |
1302 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false); |
1303 | break; | |
1304 | ||
1305 | case MOUNT_MOUNTING_SIGTERM: | |
ba035df2 | 1306 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1307 | log_warning("%s mounting timed out. Killing.", u->id); |
ba035df2 LP |
1308 | mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false); |
1309 | } else { | |
ac155bb8 | 1310 | log_warning("%s mounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1311 | |
1312 | if (m->from_proc_self_mountinfo) | |
1313 | mount_enter_mounted(m, false); | |
1314 | else | |
1315 | mount_enter_dead(m, false); | |
1316 | } | |
e537352b LP |
1317 | break; |
1318 | ||
1319 | case MOUNT_REMOUNTING_SIGTERM: | |
ba035df2 | 1320 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1321 | log_warning("%s remounting timed out. Killing.", u->id); |
ba035df2 LP |
1322 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false); |
1323 | } else { | |
ac155bb8 | 1324 | log_warning("%s remounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1325 | |
1326 | if (m->from_proc_self_mountinfo) | |
1327 | mount_enter_mounted(m, false); | |
1328 | else | |
1329 | mount_enter_dead(m, false); | |
1330 | } | |
e537352b LP |
1331 | break; |
1332 | ||
1333 | case MOUNT_UNMOUNTING_SIGTERM: | |
ba035df2 | 1334 | if (m->exec_context.send_sigkill) { |
ac155bb8 | 1335 | log_warning("%s unmounting timed out. Killing.", u->id); |
ba035df2 LP |
1336 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false); |
1337 | } else { | |
ac155bb8 | 1338 | log_warning("%s unmounting timed out. Skipping SIGKILL. Ignoring.", u->id); |
ba035df2 LP |
1339 | |
1340 | if (m->from_proc_self_mountinfo) | |
1341 | mount_enter_mounted(m, false); | |
1342 | else | |
1343 | mount_enter_dead(m, false); | |
1344 | } | |
e537352b LP |
1345 | break; |
1346 | ||
1347 | case MOUNT_MOUNTING_SIGKILL: | |
1348 | case MOUNT_REMOUNTING_SIGKILL: | |
1349 | case MOUNT_UNMOUNTING_SIGKILL: | |
ac155bb8 | 1350 | log_warning("%s mount process still around after SIGKILL. Ignoring.", u->id); |
e537352b LP |
1351 | |
1352 | if (m->from_proc_self_mountinfo) | |
1353 | mount_enter_mounted(m, false); | |
1354 | else | |
1355 | mount_enter_dead(m, false); | |
1356 | break; | |
1357 | ||
1358 | default: | |
1359 | assert_not_reached("Timeout at wrong time."); | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | static int mount_add_one( | |
1364 | Manager *m, | |
1365 | const char *what, | |
1366 | const char *where, | |
1367 | const char *options, | |
1368 | const char *fstype, | |
9fff8a1f | 1369 | int passno, |
e537352b LP |
1370 | bool from_proc_self_mountinfo, |
1371 | bool set_flags) { | |
b08d03ff LP |
1372 | int r; |
1373 | Unit *u; | |
1374 | bool delete; | |
e537352b | 1375 | char *e, *w = NULL, *o = NULL, *f = NULL; |
4e85aff4 | 1376 | MountParameters *p; |
b08d03ff | 1377 | |
f50e0a01 | 1378 | assert(m); |
b08d03ff LP |
1379 | assert(what); |
1380 | assert(where); | |
e537352b LP |
1381 | assert(options); |
1382 | assert(fstype); | |
1383 | ||
1384 | assert(!set_flags || from_proc_self_mountinfo); | |
1385 | ||
1386 | /* Ignore API mount points. They should never be referenced in | |
1387 | * dependencies ever. */ | |
33ff02c9 | 1388 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1389 | return 0; |
b08d03ff | 1390 | |
8d567588 LP |
1391 | if (streq(fstype, "autofs")) |
1392 | return 0; | |
1393 | ||
4e85aff4 LP |
1394 | /* probably some kind of swap, ignore */ |
1395 | if (!is_path(where)) | |
b08d03ff LP |
1396 | return 0; |
1397 | ||
7d17cfbc MS |
1398 | e = unit_name_from_path(where, ".mount"); |
1399 | if (!e) | |
b08d03ff LP |
1400 | return -ENOMEM; |
1401 | ||
7d17cfbc MS |
1402 | u = manager_get_unit(m, e); |
1403 | if (!u) { | |
b08d03ff LP |
1404 | delete = true; |
1405 | ||
7d17cfbc MS |
1406 | u = unit_new(m, sizeof(Mount)); |
1407 | if (!u) { | |
b08d03ff LP |
1408 | free(e); |
1409 | return -ENOMEM; | |
1410 | } | |
1411 | ||
1412 | r = unit_add_name(u, e); | |
1413 | free(e); | |
1414 | ||
1415 | if (r < 0) | |
1416 | goto fail; | |
1417 | ||
7d17cfbc MS |
1418 | MOUNT(u)->where = strdup(where); |
1419 | if (!MOUNT(u)->where) { | |
07b0b134 ML |
1420 | r = -ENOMEM; |
1421 | goto fail; | |
1422 | } | |
f50e0a01 | 1423 | |
f94ea366 | 1424 | unit_add_to_load_queue(u); |
b08d03ff LP |
1425 | } else { |
1426 | delete = false; | |
1427 | free(e); | |
1428 | } | |
1429 | ||
e537352b LP |
1430 | if (!(w = strdup(what)) || |
1431 | !(o = strdup(options)) || | |
1432 | !(f = strdup(fstype))) { | |
1433 | r = -ENOMEM; | |
1434 | goto fail; | |
1435 | } | |
1436 | ||
1437 | if (from_proc_self_mountinfo) { | |
4e85aff4 | 1438 | p = &MOUNT(u)->parameters_proc_self_mountinfo; |
e537352b LP |
1439 | |
1440 | if (set_flags) { | |
1441 | MOUNT(u)->is_mounted = true; | |
1442 | MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
4e85aff4 | 1443 | MOUNT(u)->just_changed = !streq_ptr(p->options, o); |
e537352b | 1444 | } |
ef734fd6 | 1445 | |
f50e0a01 | 1446 | MOUNT(u)->from_proc_self_mountinfo = true; |
ef734fd6 | 1447 | } else { |
4e85aff4 | 1448 | p = &MOUNT(u)->parameters_etc_fstab; |
f50e0a01 | 1449 | MOUNT(u)->from_etc_fstab = true; |
ef734fd6 | 1450 | } |
f50e0a01 | 1451 | |
4e85aff4 LP |
1452 | free(p->what); |
1453 | p->what = w; | |
b08d03ff | 1454 | |
4e85aff4 LP |
1455 | free(p->options); |
1456 | p->options = o; | |
e537352b | 1457 | |
4e85aff4 LP |
1458 | free(p->fstype); |
1459 | p->fstype = f; | |
b08d03ff | 1460 | |
9fff8a1f LP |
1461 | p->passno = passno; |
1462 | ||
c1e1601e LP |
1463 | unit_add_to_dbus_queue(u); |
1464 | ||
b08d03ff LP |
1465 | return 0; |
1466 | ||
1467 | fail: | |
e537352b LP |
1468 | free(w); |
1469 | free(o); | |
1470 | free(f); | |
1471 | ||
b08d03ff LP |
1472 | if (delete && u) |
1473 | unit_free(u); | |
1474 | ||
4e85aff4 | 1475 | return r; |
b08d03ff LP |
1476 | } |
1477 | ||
07b0b134 ML |
1478 | static int mount_find_pri(char *options) { |
1479 | char *end, *pri; | |
1480 | unsigned long r; | |
1481 | ||
3a34ae3a | 1482 | if (!(pri = mount_test_option(options, "pri"))) |
07b0b134 ML |
1483 | return 0; |
1484 | ||
1485 | pri += 4; | |
1486 | ||
1487 | errno = 0; | |
1488 | r = strtoul(pri, &end, 10); | |
1489 | ||
1490 | if (errno != 0) | |
1491 | return -errno; | |
1492 | ||
1493 | if (end == pri || (*end != ',' && *end != 0)) | |
1494 | return -EINVAL; | |
1495 | ||
1496 | return (int) r; | |
1497 | } | |
1498 | ||
e537352b | 1499 | static int mount_load_etc_fstab(Manager *m) { |
b08d03ff | 1500 | FILE *f; |
60b912f6 | 1501 | int r = 0; |
b08d03ff LP |
1502 | struct mntent* me; |
1503 | ||
1504 | assert(m); | |
1505 | ||
1506 | errno = 0; | |
1507 | if (!(f = setmntent("/etc/fstab", "r"))) | |
1508 | return -errno; | |
1509 | ||
1510 | while ((me = getmntent(f))) { | |
1511 | char *where, *what; | |
60b912f6 | 1512 | int k; |
b08d03ff LP |
1513 | |
1514 | if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) { | |
1515 | r = -ENOMEM; | |
1516 | goto finish; | |
1517 | } | |
1518 | ||
1519 | if (!(where = strdup(me->mnt_dir))) { | |
1520 | free(what); | |
1521 | r = -ENOMEM; | |
1522 | goto finish; | |
1523 | } | |
1524 | ||
1525 | if (what[0] == '/') | |
1526 | path_kill_slashes(what); | |
1527 | ||
1528 | if (where[0] == '/') | |
1529 | path_kill_slashes(where); | |
1530 | ||
07b0b134 ML |
1531 | if (streq(me->mnt_type, "swap")) { |
1532 | int pri; | |
1533 | ||
1534 | if ((pri = mount_find_pri(me->mnt_opts)) < 0) | |
60b912f6 | 1535 | k = pri; |
07b0b134 | 1536 | else |
60b912f6 | 1537 | k = swap_add_one(m, |
07b0b134 | 1538 | what, |
60b912f6 | 1539 | NULL, |
07b0b134 | 1540 | pri, |
155da457 | 1541 | !!mount_test_option(me->mnt_opts, "noauto"), |
173a8d04 | 1542 | !!mount_test_option(me->mnt_opts, "nofail"), |
4e85aff4 | 1543 | !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"), |
07b0b134 ML |
1544 | false); |
1545 | } else | |
9fff8a1f | 1546 | k = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, me->mnt_passno, false, false); |
07b0b134 | 1547 | |
b08d03ff LP |
1548 | free(what); |
1549 | free(where); | |
1550 | ||
1551 | if (r < 0) | |
60b912f6 | 1552 | r = k; |
b08d03ff LP |
1553 | } |
1554 | ||
b08d03ff LP |
1555 | finish: |
1556 | ||
1557 | endmntent(f); | |
1558 | return r; | |
1559 | } | |
1560 | ||
ef734fd6 | 1561 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
60b912f6 | 1562 | int r = 0; |
1ddff895 | 1563 | unsigned i; |
a2e0f3d3 | 1564 | char *device, *path, *options, *options2, *fstype, *d, *p, *o; |
b08d03ff LP |
1565 | |
1566 | assert(m); | |
1567 | ||
ef734fd6 | 1568 | rewind(m->proc_self_mountinfo); |
b08d03ff | 1569 | |
1ddff895 | 1570 | for (i = 1;; i++) { |
b08d03ff | 1571 | int k; |
e537352b | 1572 | |
a2e0f3d3 | 1573 | device = path = options = options2 = fstype = d = p = o = NULL; |
b08d03ff | 1574 | |
ef734fd6 | 1575 | if ((k = fscanf(m->proc_self_mountinfo, |
b08d03ff LP |
1576 | "%*s " /* (1) mount id */ |
1577 | "%*s " /* (2) parent id */ | |
1578 | "%*s " /* (3) major:minor */ | |
1579 | "%*s " /* (4) root */ | |
1580 | "%ms " /* (5) mount point */ | |
e537352b | 1581 | "%ms" /* (6) mount options */ |
b08d03ff | 1582 | "%*[^-]" /* (7) optional fields */ |
c899f8c6 | 1583 | "- " /* (8) separator */ |
e537352b | 1584 | "%ms " /* (9) file system type */ |
ef734fd6 | 1585 | "%ms" /* (10) mount source */ |
a2e0f3d3 | 1586 | "%ms" /* (11) mount options 2 */ |
ef734fd6 | 1587 | "%*[^\n]", /* some rubbish at the end */ |
b08d03ff | 1588 | &path, |
e537352b LP |
1589 | &options, |
1590 | &fstype, | |
a2e0f3d3 LP |
1591 | &device, |
1592 | &options2)) != 5) { | |
b08d03ff | 1593 | |
ef734fd6 LP |
1594 | if (k == EOF) |
1595 | break; | |
b08d03ff | 1596 | |
1ddff895 FF |
1597 | log_warning("Failed to parse /proc/self/mountinfo:%u.", i); |
1598 | goto clean_up; | |
b08d03ff LP |
1599 | } |
1600 | ||
a2e0f3d3 LP |
1601 | if (asprintf(&o, "%s,%s", options, options2) < 0) { |
1602 | r = -ENOMEM; | |
1603 | goto finish; | |
1604 | } | |
1605 | ||
e537352b LP |
1606 | if (!(d = cunescape(device)) || |
1607 | !(p = cunescape(path))) { | |
1608 | r = -ENOMEM; | |
1609 | goto finish; | |
b08d03ff | 1610 | } |
b08d03ff | 1611 | |
9fff8a1f | 1612 | if ((k = mount_add_one(m, d, p, o, fstype, 0, true, set_flags)) < 0) |
60b912f6 | 1613 | r = k; |
b08d03ff | 1614 | |
1ddff895 | 1615 | clean_up: |
e537352b LP |
1616 | free(device); |
1617 | free(path); | |
1618 | free(options); | |
a2e0f3d3 | 1619 | free(options2); |
e537352b | 1620 | free(fstype); |
b08d03ff LP |
1621 | free(d); |
1622 | free(p); | |
a2e0f3d3 | 1623 | free(o); |
b08d03ff LP |
1624 | } |
1625 | ||
e537352b LP |
1626 | finish: |
1627 | free(device); | |
1628 | free(path); | |
1629 | free(options); | |
a2e0f3d3 | 1630 | free(options2); |
e537352b LP |
1631 | free(fstype); |
1632 | free(d); | |
1633 | free(p); | |
a2e0f3d3 | 1634 | free(o); |
e537352b LP |
1635 | |
1636 | return r; | |
1637 | } | |
1638 | ||
1639 | static void mount_shutdown(Manager *m) { | |
1640 | assert(m); | |
1641 | ||
a16e1123 | 1642 | if (m->proc_self_mountinfo) { |
e537352b | 1643 | fclose(m->proc_self_mountinfo); |
a16e1123 LP |
1644 | m->proc_self_mountinfo = NULL; |
1645 | } | |
b08d03ff LP |
1646 | } |
1647 | ||
1648 | static int mount_enumerate(Manager *m) { | |
1649 | int r; | |
ef734fd6 | 1650 | struct epoll_event ev; |
b08d03ff LP |
1651 | assert(m); |
1652 | ||
a16e1123 LP |
1653 | if (!m->proc_self_mountinfo) { |
1654 | if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"))) | |
1655 | return -errno; | |
ef734fd6 | 1656 | |
a16e1123 LP |
1657 | m->mount_watch.type = WATCH_MOUNT; |
1658 | m->mount_watch.fd = fileno(m->proc_self_mountinfo); | |
ef734fd6 | 1659 | |
a16e1123 | 1660 | zero(ev); |
4e434314 | 1661 | ev.events = EPOLLPRI; |
a16e1123 | 1662 | ev.data.ptr = &m->mount_watch; |
ef734fd6 | 1663 | |
a16e1123 LP |
1664 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0) |
1665 | return -errno; | |
1666 | } | |
ef734fd6 | 1667 | |
e537352b | 1668 | if ((r = mount_load_etc_fstab(m)) < 0) |
b08d03ff LP |
1669 | goto fail; |
1670 | ||
ef734fd6 | 1671 | if ((r = mount_load_proc_self_mountinfo(m, false)) < 0) |
b08d03ff LP |
1672 | goto fail; |
1673 | ||
1674 | return 0; | |
1675 | ||
1676 | fail: | |
1677 | mount_shutdown(m); | |
1678 | return r; | |
5cb5a6ff LP |
1679 | } |
1680 | ||
ef734fd6 | 1681 | void mount_fd_event(Manager *m, int events) { |
595ed347 | 1682 | Unit *u; |
ef734fd6 LP |
1683 | int r; |
1684 | ||
1685 | assert(m); | |
4e434314 | 1686 | assert(events & EPOLLPRI); |
ef734fd6 LP |
1687 | |
1688 | /* The manager calls this for every fd event happening on the | |
1689 | * /proc/self/mountinfo file, which informs us about mounting | |
1690 | * table changes */ | |
1691 | ||
1692 | if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) { | |
e364ad06 | 1693 | log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r)); |
e537352b LP |
1694 | |
1695 | /* Reset flags, just in case, for later calls */ | |
595ed347 MS |
1696 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1697 | Mount *mount = MOUNT(u); | |
e537352b LP |
1698 | |
1699 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1700 | } | |
1701 | ||
ef734fd6 LP |
1702 | return; |
1703 | } | |
1704 | ||
1705 | manager_dispatch_load_queue(m); | |
1706 | ||
595ed347 MS |
1707 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1708 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1709 | |
e537352b LP |
1710 | if (!mount->is_mounted) { |
1711 | /* This has just been unmounted. */ | |
1712 | ||
ef734fd6 | 1713 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1714 | |
1715 | switch (mount->state) { | |
1716 | ||
1717 | case MOUNT_MOUNTED: | |
1718 | mount_enter_dead(mount, true); | |
1719 | break; | |
1720 | ||
1721 | default: | |
1722 | mount_set_state(mount, mount->state); | |
1723 | break; | |
1724 | ||
1725 | } | |
1726 | ||
1727 | } else if (mount->just_mounted || mount->just_changed) { | |
1728 | ||
60b912f6 | 1729 | /* New or changed mount entry */ |
e537352b LP |
1730 | |
1731 | switch (mount->state) { | |
1732 | ||
1733 | case MOUNT_DEAD: | |
fdf20a31 | 1734 | case MOUNT_FAILED: |
e537352b LP |
1735 | mount_enter_mounted(mount, true); |
1736 | break; | |
1737 | ||
1738 | case MOUNT_MOUNTING: | |
8d567588 | 1739 | mount_enter_mounting_done(mount); |
e537352b LP |
1740 | break; |
1741 | ||
1742 | default: | |
1743 | /* Nothing really changed, but let's | |
1744 | * issue an notification call | |
1745 | * nonetheless, in case somebody is | |
1746 | * waiting for this. (e.g. file system | |
1747 | * ro/rw remounts.) */ | |
1748 | mount_set_state(mount, mount->state); | |
1749 | break; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | /* Reset the flags for later calls */ | |
1754 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1755 | } | |
1756 | } | |
1757 | ||
fdf20a31 | 1758 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1759 | Mount *m = MOUNT(u); |
1760 | ||
1761 | assert(m); | |
1762 | ||
fdf20a31 | 1763 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1764 | mount_set_state(m, MOUNT_DEAD); |
1765 | ||
1766 | m->failure = false; | |
1767 | } | |
1768 | ||
8a0867d6 LP |
1769 | static int mount_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { |
1770 | Mount *m = MOUNT(u); | |
1771 | int r = 0; | |
1772 | Set *pid_set = NULL; | |
1773 | ||
1774 | assert(m); | |
1775 | ||
1776 | if (who == KILL_MAIN) { | |
1777 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Mount units have no main processes"); | |
a17204af | 1778 | return -ESRCH; |
8a0867d6 LP |
1779 | } |
1780 | ||
1781 | if (m->control_pid <= 0 && who == KILL_CONTROL) { | |
1782 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
a17204af | 1783 | return -ESRCH; |
8a0867d6 LP |
1784 | } |
1785 | ||
3611581e LP |
1786 | if (who == KILL_CONTROL || who == KILL_ALL) |
1787 | if (m->control_pid > 0) | |
1788 | if (kill(m->control_pid, signo) < 0) | |
1789 | r = -errno; | |
8a0867d6 | 1790 | |
3611581e | 1791 | if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { |
8a0867d6 LP |
1792 | int q; |
1793 | ||
1794 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) | |
1795 | return -ENOMEM; | |
1796 | ||
1797 | /* Exclude the control pid from being killed via the cgroup */ | |
1798 | if (m->control_pid > 0) | |
1799 | if ((q = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) { | |
1800 | r = q; | |
1801 | goto finish; | |
1802 | } | |
1803 | ||
1124fe6f | 1804 | if ((q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, pid_set)) < 0) |
3611581e | 1805 | if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
8a0867d6 LP |
1806 | r = q; |
1807 | } | |
1808 | ||
1809 | finish: | |
1810 | if (pid_set) | |
1811 | set_free(pid_set); | |
1812 | ||
1813 | return r; | |
1814 | } | |
1815 | ||
a16e1123 LP |
1816 | static const char* const mount_state_table[_MOUNT_STATE_MAX] = { |
1817 | [MOUNT_DEAD] = "dead", | |
1818 | [MOUNT_MOUNTING] = "mounting", | |
1819 | [MOUNT_MOUNTING_DONE] = "mounting-done", | |
1820 | [MOUNT_MOUNTED] = "mounted", | |
1821 | [MOUNT_REMOUNTING] = "remounting", | |
1822 | [MOUNT_UNMOUNTING] = "unmounting", | |
1823 | [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm", | |
1824 | [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill", | |
1825 | [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm", | |
1826 | [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill", | |
1827 | [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm", | |
1828 | [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill", | |
fdf20a31 | 1829 | [MOUNT_FAILED] = "failed" |
a16e1123 LP |
1830 | }; |
1831 | ||
1832 | DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState); | |
1833 | ||
1834 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { | |
1835 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1836 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1837 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1838 | }; | |
1839 | ||
1840 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1841 | ||
87f0e418 | 1842 | const UnitVTable mount_vtable = { |
5cb5a6ff | 1843 | .suffix = ".mount", |
7d17cfbc | 1844 | .object_size = sizeof(Mount), |
f975e971 LP |
1845 | .sections = |
1846 | "Unit\0" | |
1847 | "Mount\0" | |
1848 | "Install\0", | |
5cb5a6ff | 1849 | |
e537352b | 1850 | .no_alias = true, |
9e2f7c11 | 1851 | .no_instances = true, |
9e58ff9c | 1852 | .show_status = true, |
e537352b LP |
1853 | |
1854 | .init = mount_init, | |
1855 | .load = mount_load, | |
034c6ed7 | 1856 | .done = mount_done, |
e537352b | 1857 | |
f50e0a01 LP |
1858 | .coldplug = mount_coldplug, |
1859 | ||
034c6ed7 | 1860 | .dump = mount_dump, |
5cb5a6ff | 1861 | |
e537352b LP |
1862 | .start = mount_start, |
1863 | .stop = mount_stop, | |
1864 | .reload = mount_reload, | |
1865 | ||
8a0867d6 LP |
1866 | .kill = mount_kill, |
1867 | ||
a16e1123 LP |
1868 | .serialize = mount_serialize, |
1869 | .deserialize_item = mount_deserialize_item, | |
1870 | ||
f50e0a01 | 1871 | .active_state = mount_active_state, |
10a94420 | 1872 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1873 | |
701cc384 LP |
1874 | .check_gc = mount_check_gc, |
1875 | ||
e537352b LP |
1876 | .sigchld_event = mount_sigchld_event, |
1877 | .timer_event = mount_timer_event, | |
1878 | ||
fdf20a31 | 1879 | .reset_failed = mount_reset_failed, |
5632e374 | 1880 | |
c4e2ceae | 1881 | .bus_interface = "org.freedesktop.systemd1.Mount", |
4139c1b2 | 1882 | .bus_message_handler = bus_mount_message_handler, |
c4e2ceae | 1883 | .bus_invalidating_properties = bus_mount_invalidating_properties, |
4139c1b2 | 1884 | |
f50e0a01 LP |
1885 | .enumerate = mount_enumerate, |
1886 | .shutdown = mount_shutdown | |
5cb5a6ff | 1887 | }; |