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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
5cb5a6ff | 20 | #include <errno.h> |
4f5dd394 | 21 | #include <signal.h> |
b08d03ff | 22 | #include <stdio.h> |
ef734fd6 | 23 | #include <sys/epoll.h> |
5cb5a6ff | 24 | |
20ad4cfd | 25 | #include "sd-messages.h" |
4f5dd394 | 26 | |
b5efdb8a | 27 | #include "alloc-util.h" |
4139c1b2 | 28 | #include "dbus-mount.h" |
4f5dd394 | 29 | #include "escape.h" |
9a57c629 | 30 | #include "exit-status.h" |
f97b34a6 | 31 | #include "format-util.h" |
4f5dd394 LP |
32 | #include "fstab-util.h" |
33 | #include "log.h" | |
34 | #include "manager.h" | |
35 | #include "mkdir.h" | |
36 | #include "mount-setup.h" | |
4e036b7a | 37 | #include "mount-util.h" |
4f5dd394 | 38 | #include "mount.h" |
6bedfcbb | 39 | #include "parse-util.h" |
4f5dd394 | 40 | #include "path-util.h" |
7b3e062c | 41 | #include "process-util.h" |
4f5dd394 | 42 | #include "special.h" |
8b43440b | 43 | #include "string-table.h" |
b5efdb8a | 44 | #include "string-util.h" |
4f5dd394 LP |
45 | #include "strv.h" |
46 | #include "unit-name.h" | |
47 | #include "unit.h" | |
5cb5a6ff | 48 | |
7d54a03a LP |
49 | #define RETRY_UMOUNT_MAX 32 |
50 | ||
4e920142 ZJS |
51 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
52 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
53 | ||
f50e0a01 LP |
54 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
55 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
56 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
e537352b | 57 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE, |
f50e0a01 | 58 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 59 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 60 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
61 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
62 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
63 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
64 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 65 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 66 | }; |
5cb5a6ff | 67 | |
718db961 LP |
68 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
69 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
70 | ||
c634f3d2 LP |
71 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
72 | return IN_SET(state, | |
73 | MOUNT_MOUNTING, | |
74 | MOUNT_MOUNTING_DONE, | |
75 | MOUNT_REMOUNTING, | |
76 | MOUNT_REMOUNTING_SIGTERM, | |
77 | MOUNT_REMOUNTING_SIGKILL, | |
78 | MOUNT_UNMOUNTING, | |
79 | MOUNT_UNMOUNTING_SIGTERM, | |
80 | MOUNT_UNMOUNTING_SIGKILL); | |
81 | } | |
82 | ||
affc3d83 | 83 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 84 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
85 | return true; |
86 | ||
affc3d83 | 87 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
88 | return true; |
89 | ||
90 | return false; | |
91 | } | |
92 | ||
e6a7b9f4 | 93 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
94 | assert(p); |
95 | ||
96 | return mount_needs_network(p->options, p->fstype); | |
97 | } | |
98 | ||
d3bd0986 MK |
99 | static bool mount_is_loop(const MountParameters *p) { |
100 | assert(p); | |
101 | ||
102 | if (fstab_test_option(p->options, "loop\0")) | |
103 | return true; | |
104 | ||
105 | return false; | |
106 | } | |
107 | ||
e6a7b9f4 | 108 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
109 | assert(p); |
110 | ||
d15d0333 | 111 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
112 | return true; |
113 | ||
d15d0333 | 114 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
115 | return true; |
116 | ||
117 | return false; | |
118 | } | |
119 | ||
e6a7b9f4 | 120 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
121 | assert(p); |
122 | ||
d15d0333 | 123 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
124 | } |
125 | ||
2b14df4a FB |
126 | static bool mount_is_automount(const MountParameters *p) { |
127 | assert(p); | |
128 | ||
129 | return fstab_test_option(p->options, | |
130 | "comment=systemd.automount\0" | |
131 | "x-systemd.automount\0"); | |
132 | } | |
133 | ||
ebc8968b FB |
134 | static bool mount_is_bound_to_device(const Mount *m) { |
135 | const MountParameters *p; | |
136 | ||
137 | if (m->from_fragment) | |
138 | return true; | |
139 | ||
140 | p = &m->parameters_proc_self_mountinfo; | |
141 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
142 | } | |
143 | ||
e6a7b9f4 | 144 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
145 | assert(p); |
146 | ||
11041c84 | 147 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 148 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 149 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
150 | return false; |
151 | ||
152 | if (mount_is_bind(p)) | |
153 | return false; | |
154 | ||
d15d0333 ZJS |
155 | return fstab_test_option(p->options, |
156 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
157 | } |
158 | ||
fab35afa MS |
159 | const char *mount_get_fstype(const Mount *m) { |
160 | const char *type = NULL; | |
161 | ||
162 | assert(m); | |
163 | ||
164 | if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.fstype) | |
165 | type = m->parameters_proc_self_mountinfo.fstype; | |
166 | else if (m->from_fragment && m->parameters_fragment.fstype) | |
167 | type = m->parameters_fragment.fstype; | |
168 | else | |
169 | type = ""; | |
170 | ||
171 | return type; | |
172 | } | |
173 | ||
a16e1123 LP |
174 | static void mount_init(Unit *u) { |
175 | Mount *m = MOUNT(u); | |
5cb5a6ff | 176 | |
a16e1123 | 177 | assert(u); |
ac155bb8 | 178 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 179 | |
1f19a534 | 180 | m->timeout_usec = u->manager->default_timeout_start_usec; |
3e5235b0 LP |
181 | m->directory_mode = 0755; |
182 | ||
f00929ad DJL |
183 | /* We need to make sure that /usr/bin/mount is always called |
184 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
185 | * side doesn't send us another mount request while we are |
186 | * already trying to comply its last one. */ | |
74922904 | 187 | m->exec_context.same_pgrp = true; |
8d567588 | 188 | |
a16e1123 | 189 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 190 | |
5bcb0f2b | 191 | u->ignore_on_isolate = true; |
8d567588 LP |
192 | } |
193 | ||
36c16a7c | 194 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
195 | int r; |
196 | ||
197 | assert(m); | |
198 | ||
718db961 | 199 | if (m->timer_event_source) { |
36c16a7c | 200 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
201 | if (r < 0) |
202 | return r; | |
203 | ||
204 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
205 | } | |
206 | ||
36c16a7c LP |
207 | if (usec == USEC_INFINITY) |
208 | return 0; | |
209 | ||
7dfbe2e3 | 210 | r = sd_event_add_time( |
6a0f1f6d LP |
211 | UNIT(m)->manager->event, |
212 | &m->timer_event_source, | |
213 | CLOCK_MONOTONIC, | |
36c16a7c | 214 | usec, 0, |
6a0f1f6d | 215 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
216 | if (r < 0) |
217 | return r; | |
218 | ||
219 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
220 | ||
221 | return 0; | |
718db961 LP |
222 | } |
223 | ||
a16e1123 | 224 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
225 | assert(m); |
226 | ||
227 | if (m->control_pid <= 0) | |
228 | return; | |
229 | ||
230 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
231 | m->control_pid = 0; | |
232 | } | |
233 | ||
e537352b LP |
234 | static void mount_parameters_done(MountParameters *p) { |
235 | assert(p); | |
236 | ||
237 | free(p->what); | |
238 | free(p->options); | |
239 | free(p->fstype); | |
240 | ||
241 | p->what = p->options = p->fstype = NULL; | |
242 | } | |
243 | ||
87f0e418 | 244 | static void mount_done(Unit *u) { |
ef734fd6 | 245 | Mount *m = MOUNT(u); |
034c6ed7 | 246 | |
ef734fd6 | 247 | assert(m); |
034c6ed7 | 248 | |
a1e58e8e | 249 | m->where = mfree(m->where); |
f50e0a01 | 250 | |
e537352b LP |
251 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
252 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 253 | |
613b411c | 254 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); |
e537352b LP |
255 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
256 | m->control_command = NULL; | |
f50e0a01 | 257 | |
29206d46 LP |
258 | dynamic_creds_unref(&m->dynamic_creds); |
259 | ||
a16e1123 | 260 | mount_unwatch_control_pid(m); |
f50e0a01 | 261 | |
718db961 | 262 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
263 | } |
264 | ||
44a6b1b6 | 265 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
266 | assert(m); |
267 | ||
268 | if (m->from_fragment) | |
269 | return &m->parameters_fragment; | |
cb39ed3f LP |
270 | |
271 | return NULL; | |
272 | } | |
273 | ||
44a6b1b6 | 274 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
275 | assert(m); |
276 | ||
277 | if (m->from_proc_self_mountinfo) | |
278 | return &m->parameters_proc_self_mountinfo; | |
279 | ||
6b1dc2bd | 280 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
281 | } |
282 | ||
eef85c4a | 283 | static int mount_add_mount_dependencies(Mount *m) { |
fab35afa | 284 | const char *fstype; |
5c78d8e2 | 285 | MountParameters *pm; |
ac155bb8 | 286 | Unit *other; |
a57f7e2c LP |
287 | Iterator i; |
288 | Set *s; | |
b08d03ff LP |
289 | int r; |
290 | ||
6e2ef85b | 291 | assert(m); |
b08d03ff | 292 | |
a57f7e2c | 293 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
294 | _cleanup_free_ char *parent = NULL; |
295 | ||
296 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
297 | |
298 | parent = dirname_malloc(m->where); | |
299 | if (!parent) | |
300 | return -ENOMEM; | |
01f78473 | 301 | |
eef85c4a | 302 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 303 | if (r < 0) |
01f78473 | 304 | return r; |
4f0eedb7 | 305 | } |
01f78473 | 306 | |
eef85c4a LP |
307 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
308 | * or a loop mount) to be available. */ | |
a57f7e2c | 309 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
310 | if (pm && pm->what && |
311 | path_is_absolute(pm->what) && | |
d3bd0986 | 312 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 313 | |
eef85c4a | 314 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 315 | if (r < 0) |
6e2ef85b | 316 | return r; |
4f0eedb7 | 317 | } |
b08d03ff | 318 | |
eef85c4a | 319 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
320 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
321 | SET_FOREACH(other, s, i) { | |
b08d03ff | 322 | |
a57f7e2c LP |
323 | if (other->load_state != UNIT_LOADED) |
324 | continue; | |
b08d03ff | 325 | |
a57f7e2c LP |
326 | if (other == UNIT(m)) |
327 | continue; | |
b08d03ff | 328 | |
eef85c4a | 329 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 330 | if (r < 0) |
6e2ef85b | 331 | return r; |
b08d03ff | 332 | |
a57f7e2c LP |
333 | if (UNIT(m)->fragment_path) { |
334 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 335 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
336 | if (r < 0) |
337 | return r; | |
338 | } | |
7c8fa05c LP |
339 | } |
340 | ||
fab35afa MS |
341 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
342 | fstype = mount_get_fstype(m); | |
343 | if (streq(fstype, "tmpfs")) { | |
eef85c4a | 344 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, NULL, true, UNIT_DEPENDENCY_IMPLICIT); |
fab35afa MS |
345 | if (r < 0) |
346 | return r; | |
347 | } | |
348 | ||
7c8fa05c LP |
349 | return 0; |
350 | } | |
351 | ||
eef85c4a | 352 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 353 | bool device_wants_mount = false; |
eef85c4a LP |
354 | UnitDependencyMask mask; |
355 | MountParameters *p; | |
ebc8968b | 356 | UnitDependency dep; |
9fff8a1f | 357 | int r; |
173a8d04 LP |
358 | |
359 | assert(m); | |
360 | ||
06e97888 | 361 | p = get_mount_parameters(m); |
6b1dc2bd | 362 | if (!p) |
173a8d04 LP |
363 | return 0; |
364 | ||
9fff8a1f | 365 | if (!p->what) |
173a8d04 | 366 | return 0; |
5c78d8e2 | 367 | |
dd144c63 LP |
368 | if (mount_is_bind(p)) |
369 | return 0; | |
370 | ||
371 | if (!is_device_path(p->what)) | |
372 | return 0; | |
373 | ||
7ba2711d LP |
374 | /* /dev/root is a really weird thing, it's not a real device, |
375 | * but just a path the kernel exports for the root file system | |
376 | * specified on the kernel command line. Ignore it here. */ | |
377 | if (path_equal(p->what, "/dev/root")) | |
378 | return 0; | |
379 | ||
dd144c63 LP |
380 | if (path_equal(m->where, "/")) |
381 | return 0; | |
382 | ||
463d0d15 | 383 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
384 | device_wants_mount = true; |
385 | ||
ebc8968b FB |
386 | /* Mount units from /proc/self/mountinfo are not bound to devices |
387 | * by default since they're subject to races when devices are | |
388 | * unplugged. But the user can still force this dep with an | |
389 | * appropriate option (or udev property) so the mount units are | |
390 | * automatically stopped when the device disappears suddenly. */ | |
391 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
392 | ||
eef85c4a LP |
393 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
394 | ||
395 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
396 | if (r < 0) |
397 | return r; | |
9fff8a1f | 398 | |
9fff8a1f | 399 | return 0; |
173a8d04 LP |
400 | } |
401 | ||
eef85c4a LP |
402 | static int mount_add_quota_dependencies(Mount *m) { |
403 | UnitDependencyMask mask; | |
6b1dc2bd | 404 | MountParameters *p; |
eef85c4a | 405 | int r; |
6b1dc2bd LP |
406 | |
407 | assert(m); | |
408 | ||
463d0d15 | 409 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
410 | return 0; |
411 | ||
412 | p = get_mount_parameters_fragment(m); | |
413 | if (!p) | |
414 | return 0; | |
415 | ||
416 | if (!needs_quota(p)) | |
417 | return 0; | |
418 | ||
eef85c4a LP |
419 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
420 | ||
421 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true, mask); | |
6b1dc2bd LP |
422 | if (r < 0) |
423 | return r; | |
424 | ||
eef85c4a | 425 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true, mask); |
6b1dc2bd LP |
426 | if (r < 0) |
427 | return r; | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
ad2706db | 432 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 433 | MountParameters *p; |
ad2706db | 434 | assert(m); |
88ac30a1 | 435 | |
ad2706db LP |
436 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
437 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
438 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
439 | ||
440 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
441 | return true; | |
442 | ||
443 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
444 | "/", | |
445 | "/usr")) | |
446 | return true; | |
88ac30a1 | 447 | |
ad2706db LP |
448 | if (PATH_STARTSWITH_SET(m->where, |
449 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
450 | "/proc", /* All of this is API VFS */ | |
451 | "/sys", /* … dito … */ | |
452 | "/dev")) /* … dito … */ | |
453 | return true; | |
454 | ||
455 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 456 | p = get_mount_parameters(m); |
ad2706db LP |
457 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
458 | return true; | |
88ac30a1 | 459 | |
ad2706db | 460 | return false; |
88ac30a1 TG |
461 | } |
462 | ||
2edd4434 | 463 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
464 | UnitDependencyMask mask; |
465 | int r; | |
9ddc4a26 | 466 | MountParameters *p; |
ea0ec5ce | 467 | const char *after; |
2edd4434 LP |
468 | |
469 | assert(m); | |
470 | ||
4c9ea260 LP |
471 | if (!UNIT(m)->default_dependencies) |
472 | return 0; | |
473 | ||
ad2706db LP |
474 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
475 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
476 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
477 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 478 | return 0; |
2edd4434 | 479 | |
874d3404 LP |
480 | p = get_mount_parameters(m); |
481 | if (!p) | |
6b1dc2bd LP |
482 | return 0; |
483 | ||
eef85c4a LP |
484 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
485 | ||
e8d2f6cd | 486 | if (mount_is_network(p)) { |
ea0ec5ce LP |
487 | /* We order ourselves after network.target. This is |
488 | * primarily useful at shutdown: services that take | |
489 | * down the network should order themselves before | |
490 | * network.target, so that they are shut down only | |
491 | * after this mount unit is stopped. */ | |
6b1dc2bd | 492 | |
eef85c4a | 493 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, NULL, true, mask); |
a63a5c46 LP |
494 | if (r < 0) |
495 | return r; | |
a63a5c46 | 496 | |
ea0ec5ce LP |
497 | /* We pull in network-online.target, and order |
498 | * ourselves after it. This is useful at start-up to | |
499 | * actively pull in tools that want to be started | |
500 | * before we start mounting network file systems, and | |
501 | * whose purpose it is to delay this until the network | |
502 | * is "up". */ | |
503 | ||
eef85c4a | 504 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, NULL, true, mask); |
e8d2f6cd LP |
505 | if (r < 0) |
506 | return r; | |
ea0ec5ce LP |
507 | |
508 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
509 | } else | |
510 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
511 | ||
eef85c4a | 512 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true, mask); |
ea0ec5ce LP |
513 | if (r < 0) |
514 | return r; | |
e8d2f6cd | 515 | |
eef85c4a | 516 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, mask); |
ad2706db LP |
517 | if (r < 0) |
518 | return r; | |
2edd4434 LP |
519 | |
520 | return 0; | |
521 | } | |
522 | ||
8d567588 | 523 | static int mount_verify(Mount *m) { |
a57f7e2c | 524 | _cleanup_free_ char *e = NULL; |
b294b79f | 525 | MountParameters *p; |
7410616c | 526 | int r; |
a57f7e2c | 527 | |
8d567588 LP |
528 | assert(m); |
529 | ||
1124fe6f | 530 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
531 | return 0; |
532 | ||
1df96fcb | 533 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
534 | return -ENOENT; |
535 | ||
7410616c LP |
536 | r = unit_name_from_path(m->where, ".mount", &e); |
537 | if (r < 0) | |
f2341e0a | 538 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 539 | |
7410616c | 540 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 541 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
542 | return -EINVAL; |
543 | } | |
544 | ||
33ff02c9 | 545 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 546 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
33ff02c9 LP |
547 | return -EINVAL; |
548 | } | |
549 | ||
b294b79f MO |
550 | p = get_mount_parameters_fragment(m); |
551 | if (p && !p->what) { | |
f2341e0a | 552 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
4e85aff4 LP |
553 | return -EBADMSG; |
554 | } | |
555 | ||
4819ff03 | 556 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 557 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
4d0e5dbd LP |
558 | return -EINVAL; |
559 | } | |
560 | ||
8d567588 LP |
561 | return 0; |
562 | } | |
563 | ||
1a4ac875 MS |
564 | static int mount_add_extras(Mount *m) { |
565 | Unit *u = UNIT(m); | |
e537352b LP |
566 | int r; |
567 | ||
e821075a LP |
568 | assert(m); |
569 | ||
570 | if (u->fragment_path) | |
1a4ac875 | 571 | m->from_fragment = true; |
e537352b | 572 | |
1a4ac875 | 573 | if (!m->where) { |
7410616c LP |
574 | r = unit_name_to_path(u->id, &m->where); |
575 | if (r < 0) | |
576 | return r; | |
1a4ac875 | 577 | } |
a16e1123 | 578 | |
1a4ac875 | 579 | path_kill_slashes(m->where); |
e537352b | 580 | |
e821075a | 581 | if (!u->description) { |
1a4ac875 MS |
582 | r = unit_set_description(u, m->where); |
583 | if (r < 0) | |
173a8d04 | 584 | return r; |
1a4ac875 | 585 | } |
6e2ef85b | 586 | |
eef85c4a | 587 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
588 | if (r < 0) |
589 | return r; | |
6e2ef85b | 590 | |
eef85c4a | 591 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
592 | if (r < 0) |
593 | return r; | |
6e2ef85b | 594 | |
eef85c4a | 595 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
596 | if (r < 0) |
597 | return r; | |
e537352b | 598 | |
598459ce LP |
599 | r = unit_patch_contexts(u); |
600 | if (r < 0) | |
601 | return r; | |
4e67ddd6 | 602 | |
598459ce | 603 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
604 | if (r < 0) |
605 | return r; | |
606 | ||
d79200e2 | 607 | r = unit_set_default_slice(u); |
1a4ac875 MS |
608 | if (r < 0) |
609 | return r; | |
610 | ||
4c9ea260 LP |
611 | r = mount_add_default_dependencies(m); |
612 | if (r < 0) | |
613 | return r; | |
598459ce | 614 | |
1a4ac875 MS |
615 | return 0; |
616 | } | |
617 | ||
11222d0f LP |
618 | static int mount_load_root_mount(Unit *u) { |
619 | assert(u); | |
620 | ||
621 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
622 | return 0; | |
623 | ||
624 | u->perpetual = true; | |
625 | u->default_dependencies = false; | |
626 | ||
627 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
628 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
629 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
630 | ||
631 | if (!u->description) | |
632 | u->description = strdup("Root Mount"); | |
633 | ||
634 | return 1; | |
635 | } | |
636 | ||
1a4ac875 MS |
637 | static int mount_load(Unit *u) { |
638 | Mount *m = MOUNT(u); | |
639 | int r; | |
640 | ||
641 | assert(u); | |
642 | assert(u->load_state == UNIT_STUB); | |
643 | ||
11222d0f LP |
644 | r = mount_load_root_mount(u); |
645 | if (r < 0) | |
646 | return r; | |
647 | ||
648 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
649 | r = unit_load_fragment_and_dropin_optional(u); |
650 | else | |
651 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
652 | if (r < 0) |
653 | return r; | |
155da457 | 654 | |
1a4ac875 MS |
655 | /* This is a new unit? Then let's add in some extras */ |
656 | if (u->load_state == UNIT_LOADED) { | |
657 | r = mount_add_extras(m); | |
658 | if (r < 0) | |
659 | return r; | |
e537352b LP |
660 | } |
661 | ||
8d567588 | 662 | return mount_verify(m); |
e537352b LP |
663 | } |
664 | ||
665 | static void mount_set_state(Mount *m, MountState state) { | |
666 | MountState old_state; | |
667 | assert(m); | |
668 | ||
669 | old_state = m->state; | |
670 | m->state = state; | |
671 | ||
c634f3d2 | 672 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 673 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 674 | mount_unwatch_control_pid(m); |
e537352b | 675 | m->control_command = NULL; |
a16e1123 | 676 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
677 | } |
678 | ||
679 | if (state != old_state) | |
f2341e0a | 680 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 681 | |
9d2f5178 | 682 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS); |
e537352b LP |
683 | } |
684 | ||
be847e82 | 685 | static int mount_coldplug(Unit *u) { |
e537352b | 686 | Mount *m = MOUNT(u); |
a16e1123 LP |
687 | MountState new_state = MOUNT_DEAD; |
688 | int r; | |
e537352b LP |
689 | |
690 | assert(m); | |
691 | assert(m->state == MOUNT_DEAD); | |
692 | ||
a16e1123 LP |
693 | if (m->deserialized_state != m->state) |
694 | new_state = m->deserialized_state; | |
695 | else if (m->from_proc_self_mountinfo) | |
696 | new_state = MOUNT_MOUNTED; | |
e537352b | 697 | |
5bcb0f2b LP |
698 | if (new_state == m->state) |
699 | return 0; | |
e537352b | 700 | |
c386f588 LP |
701 | if (m->control_pid > 0 && |
702 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 703 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
704 | |
705 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
706 | if (r < 0) | |
707 | return r; | |
e537352b | 708 | |
36c16a7c | 709 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
710 | if (r < 0) |
711 | return r; | |
a16e1123 | 712 | } |
e537352b | 713 | |
29206d46 LP |
714 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) |
715 | (void) unit_setup_dynamic_creds(u); | |
716 | ||
5bcb0f2b | 717 | mount_set_state(m, new_state); |
e537352b | 718 | return 0; |
e537352b LP |
719 | } |
720 | ||
721 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
722 | Mount *m = MOUNT(u); | |
723 | MountParameters *p; | |
724 | ||
725 | assert(m); | |
726 | assert(f); | |
727 | ||
cb39ed3f | 728 | p = get_mount_parameters(m); |
e537352b LP |
729 | |
730 | fprintf(f, | |
731 | "%sMount State: %s\n" | |
81a5c6d0 | 732 | "%sResult: %s\n" |
e537352b LP |
733 | "%sWhere: %s\n" |
734 | "%sWhat: %s\n" | |
735 | "%sFile System Type: %s\n" | |
736 | "%sOptions: %s\n" | |
e537352b LP |
737 | "%sFrom /proc/self/mountinfo: %s\n" |
738 | "%sFrom fragment: %s\n" | |
ad2706db | 739 | "%sExtrinsic: %s\n" |
e520950a | 740 | "%sDirectoryMode: %04o\n" |
49915de2 | 741 | "%sSloppyOptions: %s\n" |
4f8d40a9 BR |
742 | "%sLazyUnmount: %s\n" |
743 | "%sForceUnmount: %s\n", | |
a16e1123 | 744 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 745 | prefix, mount_result_to_string(m->result), |
e537352b | 746 | prefix, m->where, |
1e4fc9b1 HH |
747 | prefix, p ? strna(p->what) : "n/a", |
748 | prefix, p ? strna(p->fstype) : "n/a", | |
749 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
750 | prefix, yes_no(m->from_proc_self_mountinfo), |
751 | prefix, yes_no(m->from_fragment), | |
ad2706db | 752 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 753 | prefix, m->directory_mode, |
49915de2 | 754 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 BR |
755 | prefix, yes_no(m->lazy_unmount), |
756 | prefix, yes_no(m->force_unmount)); | |
e537352b LP |
757 | |
758 | if (m->control_pid > 0) | |
759 | fprintf(f, | |
ccd06097 ZJS |
760 | "%sControl PID: "PID_FMT"\n", |
761 | prefix, m->control_pid); | |
e537352b LP |
762 | |
763 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 764 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 765 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
766 | } |
767 | ||
a16e1123 LP |
768 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
769 | pid_t pid; | |
770 | int r; | |
9fa95f85 | 771 | ExecParameters exec_params = { |
1703fa41 | 772 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
773 | .stdin_fd = -1, |
774 | .stdout_fd = -1, | |
775 | .stderr_fd = -1, | |
9fa95f85 | 776 | }; |
a16e1123 LP |
777 | |
778 | assert(m); | |
779 | assert(c); | |
780 | assert(_pid); | |
781 | ||
5ad096b3 | 782 | (void) unit_realize_cgroup(UNIT(m)); |
906c06f6 DM |
783 | if (m->reset_accounting) { |
784 | (void) unit_reset_cpu_accounting(UNIT(m)); | |
785 | (void) unit_reset_ip_accounting(UNIT(m)); | |
786 | m->reset_accounting = false; | |
5ad096b3 | 787 | } |
4ad49000 | 788 | |
613b411c LP |
789 | r = unit_setup_exec_runtime(UNIT(m)); |
790 | if (r < 0) | |
36c16a7c | 791 | return r; |
613b411c | 792 | |
29206d46 LP |
793 | r = unit_setup_dynamic_creds(UNIT(m)); |
794 | if (r < 0) | |
795 | return r; | |
796 | ||
36c16a7c | 797 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 798 | if (r < 0) |
36c16a7c | 799 | return r; |
a16e1123 | 800 | |
19bbdd98 | 801 | manager_set_exec_params(UNIT(m)->manager, &exec_params); |
f0d47797 | 802 | unit_set_exec_params(UNIT(m), &exec_params); |
9fa95f85 | 803 | |
f2341e0a LP |
804 | r = exec_spawn(UNIT(m), |
805 | c, | |
4ad49000 | 806 | &m->exec_context, |
9fa95f85 | 807 | &exec_params, |
613b411c | 808 | m->exec_runtime, |
29206d46 | 809 | &m->dynamic_creds, |
4ad49000 LP |
810 | &pid); |
811 | if (r < 0) | |
36c16a7c | 812 | return r; |
a16e1123 | 813 | |
4ad49000 LP |
814 | r = unit_watch_pid(UNIT(m), pid); |
815 | if (r < 0) | |
a16e1123 | 816 | /* FIXME: we need to do something here */ |
36c16a7c | 817 | return r; |
a16e1123 LP |
818 | |
819 | *_pid = pid; | |
820 | ||
821 | return 0; | |
a16e1123 LP |
822 | } |
823 | ||
9d2f5178 | 824 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
825 | assert(m); |
826 | ||
a0fef983 | 827 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 828 | m->result = f; |
e537352b | 829 | |
ed77d407 LP |
830 | if (m->result != MOUNT_SUCCESS) |
831 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
832 | ||
29206d46 LP |
833 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
834 | ||
613b411c LP |
835 | exec_runtime_destroy(m->exec_runtime); |
836 | m->exec_runtime = exec_runtime_unref(m->exec_runtime); | |
837 | ||
3536f49e | 838 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 839 | |
00d9ef85 LP |
840 | unit_unref_uid_gid(UNIT(m), true); |
841 | ||
29206d46 | 842 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
843 | } |
844 | ||
9d2f5178 | 845 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
846 | assert(m); |
847 | ||
a0fef983 | 848 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 849 | m->result = f; |
80876c20 LP |
850 | |
851 | mount_set_state(m, MOUNT_MOUNTED); | |
852 | } | |
853 | ||
22af0e58 LP |
854 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
855 | assert(m); | |
856 | ||
857 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
858 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
859 | * ultimately we just mirror the kernel's internal state on this. */ | |
860 | ||
861 | if (m->from_proc_self_mountinfo) | |
862 | mount_enter_mounted(m, f); | |
863 | else | |
864 | mount_enter_dead(m, f); | |
865 | } | |
866 | ||
867 | static int state_to_kill_operation(MountState state) { | |
868 | switch (state) { | |
869 | ||
870 | case MOUNT_REMOUNTING_SIGTERM: | |
871 | case MOUNT_UNMOUNTING_SIGTERM: | |
872 | return KILL_TERMINATE; | |
873 | ||
874 | case MOUNT_REMOUNTING_SIGKILL: | |
875 | case MOUNT_UNMOUNTING_SIGKILL: | |
876 | return KILL_KILL; | |
877 | ||
878 | default: | |
879 | return _KILL_OPERATION_INVALID; | |
880 | } | |
881 | } | |
882 | ||
9d2f5178 | 883 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
884 | int r; |
885 | ||
886 | assert(m); | |
887 | ||
a0fef983 | 888 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 889 | m->result = f; |
e537352b | 890 | |
cd2086fe LP |
891 | r = unit_kill_context( |
892 | UNIT(m), | |
893 | &m->kill_context, | |
22af0e58 | 894 | state_to_kill_operation(state), |
cd2086fe LP |
895 | -1, |
896 | m->control_pid, | |
897 | false); | |
898 | if (r < 0) | |
899 | goto fail; | |
e537352b | 900 | |
cd2086fe | 901 | if (r > 0) { |
36c16a7c | 902 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 903 | if (r < 0) |
80876c20 | 904 | goto fail; |
e537352b | 905 | |
80876c20 | 906 | mount_set_state(m, state); |
22af0e58 | 907 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 908 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 909 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 910 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 911 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 912 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 913 | else |
22af0e58 | 914 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
915 | |
916 | return; | |
917 | ||
918 | fail: | |
f2341e0a | 919 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 920 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
921 | } |
922 | ||
9d2f5178 | 923 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
924 | int r; |
925 | ||
926 | assert(m); | |
927 | ||
7d54a03a LP |
928 | /* Start counting our attempts */ |
929 | if (!IN_SET(m->state, | |
930 | MOUNT_UNMOUNTING, | |
931 | MOUNT_UNMOUNTING_SIGTERM, | |
932 | MOUNT_UNMOUNTING_SIGKILL)) | |
933 | m->n_retry_umount = 0; | |
934 | ||
a16e1123 LP |
935 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
936 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 937 | |
83897d54 | 938 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
939 | if (r >= 0 && m->lazy_unmount) |
940 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
941 | if (r >= 0 && m->force_unmount) |
942 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 943 | if (r < 0) |
e537352b LP |
944 | goto fail; |
945 | ||
a16e1123 | 946 | mount_unwatch_control_pid(m); |
5e94833f | 947 | |
7d54a03a LP |
948 | r = mount_spawn(m, m->control_command, &m->control_pid); |
949 | if (r < 0) | |
e537352b LP |
950 | goto fail; |
951 | ||
952 | mount_set_state(m, MOUNT_UNMOUNTING); | |
953 | ||
954 | return; | |
955 | ||
956 | fail: | |
f2341e0a | 957 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 958 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
959 | } |
960 | ||
8d567588 | 961 | static void mount_enter_mounting(Mount *m) { |
e537352b | 962 | int r; |
cb39ed3f | 963 | MountParameters *p; |
e537352b LP |
964 | |
965 | assert(m); | |
966 | ||
a16e1123 LP |
967 | m->control_command_id = MOUNT_EXEC_MOUNT; |
968 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
e537352b | 969 | |
f2341e0a LP |
970 | r = unit_fail_if_symlink(UNIT(m), m->where); |
971 | if (r < 0) | |
972 | goto fail; | |
973 | ||
974 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 975 | |
f2341e0a | 976 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 977 | |
cb39ed3f | 978 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 979 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 980 | if (p && mount_is_bind(p)) |
f2341e0a | 981 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 982 | |
b294b79f | 983 | if (p) { |
17a1c597 ZJS |
984 | _cleanup_free_ char *opts = NULL; |
985 | ||
b294b79f | 986 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
987 | if (r < 0) |
988 | goto fail; | |
989 | ||
b294b79f | 990 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
991 | if (r >= 0 && m->sloppy_options) |
992 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
993 | if (r >= 0 && p->fstype) |
994 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 995 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 996 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 997 | } else |
e537352b | 998 | r = -ENOENT; |
e537352b LP |
999 | if (r < 0) |
1000 | goto fail; | |
1001 | ||
a16e1123 | 1002 | mount_unwatch_control_pid(m); |
5e94833f | 1003 | |
257f1d8e LP |
1004 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1005 | if (r < 0) | |
e537352b LP |
1006 | goto fail; |
1007 | ||
1008 | mount_set_state(m, MOUNT_MOUNTING); | |
1009 | ||
1010 | return; | |
1011 | ||
1012 | fail: | |
f2341e0a | 1013 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1014 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1015 | } |
1016 | ||
850b7410 LP |
1017 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1018 | assert(m); | |
1019 | ||
1020 | /* Only store the first error we encounter */ | |
1021 | if (m->reload_result != MOUNT_SUCCESS) | |
1022 | return; | |
1023 | ||
1024 | m->reload_result = result; | |
1025 | } | |
1026 | ||
9d2f5178 | 1027 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1028 | int r; |
b294b79f | 1029 | MountParameters *p; |
e537352b LP |
1030 | |
1031 | assert(m); | |
1032 | ||
850b7410 LP |
1033 | /* Reset reload result when we are about to start a new remount operation */ |
1034 | m->reload_result = MOUNT_SUCCESS; | |
1035 | ||
a16e1123 LP |
1036 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1037 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1038 | |
b294b79f MO |
1039 | p = get_mount_parameters_fragment(m); |
1040 | if (p) { | |
e537352b LP |
1041 | const char *o; |
1042 | ||
b294b79f MO |
1043 | if (p->options) |
1044 | o = strjoina("remount,", p->options); | |
718db961 | 1045 | else |
e537352b LP |
1046 | o = "remount"; |
1047 | ||
f00929ad | 1048 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1049 | p->what, m->where, |
e86b3761 | 1050 | "-o", o, NULL); |
e86b3761 ZJS |
1051 | if (r >= 0 && m->sloppy_options) |
1052 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1053 | if (r >= 0 && p->fstype) |
1054 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1055 | } else |
e537352b | 1056 | r = -ENOENT; |
60b912f6 | 1057 | if (r < 0) |
e537352b | 1058 | goto fail; |
e537352b | 1059 | |
a16e1123 | 1060 | mount_unwatch_control_pid(m); |
5e94833f | 1061 | |
718db961 LP |
1062 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1063 | if (r < 0) | |
e537352b LP |
1064 | goto fail; |
1065 | ||
1066 | mount_set_state(m, MOUNT_REMOUNTING); | |
1067 | ||
1068 | return; | |
1069 | ||
1070 | fail: | |
f2341e0a | 1071 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1072 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1073 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1074 | } |
1075 | ||
1076 | static int mount_start(Unit *u) { | |
1077 | Mount *m = MOUNT(u); | |
07299350 | 1078 | int r; |
e537352b LP |
1079 | |
1080 | assert(m); | |
1081 | ||
1082 | /* We cannot fulfill this request right now, try again later | |
1083 | * please! */ | |
f2aed307 LP |
1084 | if (IN_SET(m->state, |
1085 | MOUNT_UNMOUNTING, | |
1086 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1087 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1088 | return -EAGAIN; |
1089 | ||
1090 | /* Already on it! */ | |
60b912f6 | 1091 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1092 | return 0; |
1093 | ||
f2aed307 | 1094 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1095 | |
07299350 LP |
1096 | r = unit_start_limit_test(u); |
1097 | if (r < 0) { | |
1098 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1099 | return r; | |
1100 | } | |
1101 | ||
4b58153d LP |
1102 | r = unit_acquire_invocation_id(u); |
1103 | if (r < 0) | |
1104 | return r; | |
1105 | ||
9d2f5178 LP |
1106 | m->result = MOUNT_SUCCESS; |
1107 | m->reload_result = MOUNT_SUCCESS; | |
906c06f6 | 1108 | m->reset_accounting = true; |
9d2f5178 | 1109 | |
8d567588 | 1110 | mount_enter_mounting(m); |
82a2b6bb | 1111 | return 1; |
e537352b LP |
1112 | } |
1113 | ||
1114 | static int mount_stop(Unit *u) { | |
1115 | Mount *m = MOUNT(u); | |
1116 | ||
1117 | assert(m); | |
1118 | ||
22af0e58 LP |
1119 | switch (m->state) { |
1120 | ||
1121 | case MOUNT_UNMOUNTING: | |
1122 | case MOUNT_UNMOUNTING_SIGKILL: | |
1123 | case MOUNT_UNMOUNTING_SIGTERM: | |
1124 | /* Already on it */ | |
e537352b LP |
1125 | return 0; |
1126 | ||
22af0e58 LP |
1127 | case MOUNT_MOUNTING: |
1128 | case MOUNT_MOUNTING_DONE: | |
1129 | case MOUNT_REMOUNTING: | |
1130 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1131 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1132 | return 0; | |
e537352b | 1133 | |
22af0e58 LP |
1134 | case MOUNT_REMOUNTING_SIGTERM: |
1135 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1136 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1137 | return 0; | |
1138 | ||
1139 | case MOUNT_REMOUNTING_SIGKILL: | |
1140 | /* as above */ | |
1141 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1142 | return 0; | |
1143 | ||
1144 | case MOUNT_MOUNTED: | |
1145 | mount_enter_unmounting(m); | |
1146 | return 1; | |
1147 | ||
1148 | default: | |
1149 | assert_not_reached("Unexpected state."); | |
1150 | } | |
e537352b LP |
1151 | } |
1152 | ||
1153 | static int mount_reload(Unit *u) { | |
1154 | Mount *m = MOUNT(u); | |
1155 | ||
1156 | assert(m); | |
1157 | ||
22af0e58 | 1158 | if (m->state == MOUNT_MOUNTING_DONE) /* not yet ready to reload, try again */ |
e537352b LP |
1159 | return -EAGAIN; |
1160 | ||
1161 | assert(m->state == MOUNT_MOUNTED); | |
1162 | ||
9d2f5178 | 1163 | mount_enter_remounting(m); |
22af0e58 | 1164 | |
2d018ae2 | 1165 | return 1; |
e537352b LP |
1166 | } |
1167 | ||
a16e1123 LP |
1168 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1169 | Mount *m = MOUNT(u); | |
1170 | ||
1171 | assert(m); | |
1172 | assert(f); | |
1173 | assert(fds); | |
1174 | ||
1175 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1176 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1177 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1178 | |
1179 | if (m->control_pid > 0) | |
ccd06097 | 1180 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1181 | |
1182 | if (m->control_command_id >= 0) | |
1183 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1184 | ||
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1189 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1190 | |
1191 | assert(u); | |
1192 | assert(key); | |
1193 | assert(value); | |
1194 | assert(fds); | |
1195 | ||
1196 | if (streq(key, "state")) { | |
1197 | MountState state; | |
1198 | ||
1199 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1200 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1201 | else |
1202 | m->deserialized_state = state; | |
9d2f5178 LP |
1203 | } else if (streq(key, "result")) { |
1204 | MountResult f; | |
a16e1123 | 1205 | |
9d2f5178 LP |
1206 | f = mount_result_from_string(value); |
1207 | if (f < 0) | |
f2341e0a | 1208 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1209 | else if (f != MOUNT_SUCCESS) |
1210 | m->result = f; | |
1211 | ||
1212 | } else if (streq(key, "reload-result")) { | |
1213 | MountResult f; | |
1214 | ||
1215 | f = mount_result_from_string(value); | |
1216 | if (f < 0) | |
f2341e0a | 1217 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1218 | else if (f != MOUNT_SUCCESS) |
1219 | m->reload_result = f; | |
a16e1123 LP |
1220 | |
1221 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1222 | pid_t pid; |
a16e1123 | 1223 | |
e364ad06 | 1224 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1225 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1226 | else |
5925dd3c | 1227 | m->control_pid = pid; |
a16e1123 LP |
1228 | } else if (streq(key, "control-command")) { |
1229 | MountExecCommand id; | |
1230 | ||
f2341e0a LP |
1231 | id = mount_exec_command_from_string(value); |
1232 | if (id < 0) | |
1233 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1234 | else { |
1235 | m->control_command_id = id; | |
1236 | m->control_command = m->exec_command + id; | |
1237 | } | |
a16e1123 | 1238 | } else |
f2341e0a | 1239 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1240 | |
1241 | return 0; | |
1242 | } | |
1243 | ||
44a6b1b6 | 1244 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1245 | assert(u); |
1246 | ||
1247 | return state_translation_table[MOUNT(u)->state]; | |
1248 | } | |
1249 | ||
44a6b1b6 | 1250 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1251 | assert(u); |
1252 | ||
a16e1123 | 1253 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1254 | } |
1255 | ||
44a6b1b6 | 1256 | _pure_ static bool mount_check_gc(Unit *u) { |
701cc384 LP |
1257 | Mount *m = MOUNT(u); |
1258 | ||
1259 | assert(m); | |
1260 | ||
6b1dc2bd | 1261 | return m->from_proc_self_mountinfo; |
701cc384 LP |
1262 | } |
1263 | ||
e537352b LP |
1264 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1265 | Mount *m = MOUNT(u); | |
9d2f5178 | 1266 | MountResult f; |
e537352b LP |
1267 | |
1268 | assert(m); | |
1269 | assert(pid >= 0); | |
1270 | ||
8c47c732 LP |
1271 | if (pid != m->control_pid) |
1272 | return; | |
e537352b | 1273 | |
e537352b LP |
1274 | m->control_pid = 0; |
1275 | ||
1f0958f6 | 1276 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1277 | f = MOUNT_SUCCESS; |
1278 | else if (code == CLD_EXITED) | |
1279 | f = MOUNT_FAILURE_EXIT_CODE; | |
1280 | else if (code == CLD_KILLED) | |
1281 | f = MOUNT_FAILURE_SIGNAL; | |
1282 | else if (code == CLD_DUMPED) | |
1283 | f = MOUNT_FAILURE_CORE_DUMP; | |
1284 | else | |
1285 | assert_not_reached("Unknown code"); | |
1286 | ||
850b7410 LP |
1287 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1288 | mount_set_reload_result(m, f); | |
1289 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1290 | m->result = f; |
8c47c732 | 1291 | |
a16e1123 | 1292 | if (m->control_command) { |
6ea832a2 | 1293 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1294 | |
a16e1123 LP |
1295 | m->control_command = NULL; |
1296 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1297 | } | |
1298 | ||
f2341e0a LP |
1299 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1300 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1301 | |
22af0e58 LP |
1302 | /* Note that mount(8) returning and the kernel sending us a mount table change event might happen |
1303 | * out-of-order. If an operation succeed we assume the kernel will follow soon too and already change into the | |
1304 | * resulting state. If it fails we check if the kernel still knows about the mount. and change state | |
1305 | * accordingly. */ | |
e537352b LP |
1306 | |
1307 | switch (m->state) { | |
1308 | ||
1309 | case MOUNT_MOUNTING: | |
1310 | case MOUNT_MOUNTING_DONE: | |
e537352b | 1311 | |
052364d4 LP |
1312 | if (f == MOUNT_SUCCESS || m->from_proc_self_mountinfo) |
1313 | /* If /bin/mount returned success, or if we see the mount point in /proc/self/mountinfo we are | |
ce954c03 | 1314 | * happy. If we see the first condition first, we should see the second condition |
052364d4 | 1315 | * immediately after – or /bin/mount lies to us and is broken. */ |
9d2f5178 | 1316 | mount_enter_mounted(m, f); |
e537352b | 1317 | else |
9d2f5178 | 1318 | mount_enter_dead(m, f); |
e537352b LP |
1319 | break; |
1320 | ||
e2f3b44c | 1321 | case MOUNT_REMOUNTING: |
e2f3b44c | 1322 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1323 | case MOUNT_REMOUNTING_SIGKILL: |
1324 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1325 | break; |
1326 | ||
e537352b LP |
1327 | case MOUNT_UNMOUNTING: |
1328 | case MOUNT_UNMOUNTING_SIGKILL: | |
1329 | case MOUNT_UNMOUNTING_SIGTERM: | |
1330 | ||
22af0e58 LP |
1331 | if (m->from_proc_self_mountinfo) { |
1332 | ||
1333 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
1334 | * stacked on top of each other. Note that due to the io event priority logic we can be sure | |
1335 | * the new mountinfo is loaded before we process the SIGCHLD for the mount command. */ | |
1336 | ||
1337 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1338 | log_unit_debug(u, "Mount still present, trying again."); | |
1339 | m->n_retry_umount++; | |
1340 | mount_enter_unmounting(m); | |
1341 | } else { | |
1342 | log_unit_debug(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); | |
1343 | mount_enter_mounted(m, f); | |
1344 | } | |
1345 | } else | |
9d2f5178 | 1346 | mount_enter_dead(m, f); |
22af0e58 | 1347 | |
e537352b LP |
1348 | break; |
1349 | ||
1350 | default: | |
1351 | assert_not_reached("Uh, control process died at wrong time."); | |
1352 | } | |
c4e2ceae LP |
1353 | |
1354 | /* Notify clients about changed exit status */ | |
1355 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1356 | } |
1357 | ||
718db961 LP |
1358 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1359 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1360 | |
1361 | assert(m); | |
718db961 | 1362 | assert(m->timer_event_source == source); |
e537352b LP |
1363 | |
1364 | switch (m->state) { | |
1365 | ||
1366 | case MOUNT_MOUNTING: | |
1367 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1368 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1369 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1370 | break; |
1371 | ||
1372 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1373 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1374 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1375 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1376 | break; |
1377 | ||
22af0e58 LP |
1378 | case MOUNT_REMOUNTING_SIGTERM: |
1379 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1380 | |
4819ff03 | 1381 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1382 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1383 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1384 | } else { |
22af0e58 LP |
1385 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1386 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1387 | } |
e537352b LP |
1388 | break; |
1389 | ||
22af0e58 LP |
1390 | case MOUNT_REMOUNTING_SIGKILL: |
1391 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1392 | |
22af0e58 LP |
1393 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1394 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1395 | break; | |
1396 | ||
1397 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1398 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1399 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1400 | break; |
1401 | ||
1402 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1403 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1404 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1405 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1406 | } else { |
22af0e58 LP |
1407 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1408 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1409 | } |
e537352b LP |
1410 | break; |
1411 | ||
e537352b | 1412 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1413 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1414 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1415 | break; |
1416 | ||
1417 | default: | |
1418 | assert_not_reached("Timeout at wrong time."); | |
1419 | } | |
718db961 LP |
1420 | |
1421 | return 0; | |
e537352b LP |
1422 | } |
1423 | ||
03b8cfed FB |
1424 | typedef struct { |
1425 | bool is_mounted; | |
1426 | bool just_mounted; | |
1427 | bool just_changed; | |
1428 | } MountSetupFlags; | |
1429 | ||
1430 | static int mount_setup_new_unit( | |
1431 | Unit *u, | |
1432 | const char *what, | |
1433 | const char *where, | |
1434 | const char *options, | |
1435 | const char *fstype, | |
1436 | MountSetupFlags *flags) { | |
1437 | ||
1438 | MountParameters *p; | |
1439 | ||
1440 | assert(u); | |
1441 | assert(flags); | |
1442 | ||
1443 | u->source_path = strdup("/proc/self/mountinfo"); | |
1444 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1445 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1446 | return -ENOMEM; |
1447 | ||
1448 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1449 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1450 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1451 | ||
1452 | p->what = strdup(what); | |
1453 | p->options = strdup(options); | |
1454 | p->fstype = strdup(fstype); | |
1455 | if (!p->what || !p->options || !p->fstype) | |
1456 | return -ENOMEM; | |
1457 | ||
1458 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1459 | const char *target; | |
1460 | int r; | |
1461 | ||
1462 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
eef85c4a | 1463 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1464 | if (r < 0) |
1465 | return r; | |
1466 | ||
eef85c4a | 1467 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1468 | if (r < 0) |
1469 | return r; | |
1470 | } | |
1471 | ||
cfcd4318 | 1472 | unit_add_to_load_queue(u); |
03b8cfed FB |
1473 | flags->is_mounted = true; |
1474 | flags->just_mounted = true; | |
1475 | flags->just_changed = true; | |
1476 | ||
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static int mount_setup_existing_unit( | |
1481 | Unit *u, | |
1482 | const char *what, | |
1483 | const char *where, | |
1484 | const char *options, | |
1485 | const char *fstype, | |
1486 | MountSetupFlags *flags) { | |
1487 | ||
1488 | MountParameters *p; | |
1489 | bool load_extras = false; | |
1490 | int r1, r2, r3; | |
1491 | ||
1492 | assert(u); | |
1493 | assert(flags); | |
1494 | ||
1495 | if (!MOUNT(u)->where) { | |
1496 | MOUNT(u)->where = strdup(where); | |
1497 | if (!MOUNT(u)->where) | |
1498 | return -ENOMEM; | |
1499 | } | |
1500 | ||
1501 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1502 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1503 | ||
1504 | r1 = free_and_strdup(&p->what, what); | |
1505 | r2 = free_and_strdup(&p->options, options); | |
1506 | r3 = free_and_strdup(&p->fstype, fstype); | |
1507 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1508 | return -ENOMEM; | |
1509 | ||
1510 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1511 | flags->is_mounted = true; | |
1512 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; | |
1513 | ||
1514 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1515 | ||
1516 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1517 | /* _netdev option may have shown up late, or on a | |
1518 | * remount. Add remote-fs dependencies, even though | |
1519 | * local-fs ones may already be there. | |
1520 | * | |
1521 | * Note: due to a current limitation (we don't track | |
1522 | * in the dependency "Set*" objects who created a | |
1523 | * dependency), we can only add deps, never lose them, | |
1524 | * until the next full daemon-reload. */ | |
eef85c4a | 1525 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, NULL, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1526 | load_extras = true; |
1527 | } | |
1528 | ||
1529 | if (u->load_state == UNIT_NOT_FOUND) { | |
1530 | u->load_state = UNIT_LOADED; | |
1531 | u->load_error = 0; | |
1532 | ||
1533 | /* Load in the extras later on, after we | |
1534 | * finished initialization of the unit */ | |
1535 | ||
1536 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1537 | load_extras = true; | |
1538 | flags->just_changed = true; | |
1539 | } | |
1540 | ||
1541 | if (load_extras) | |
1542 | return mount_add_extras(MOUNT(u)); | |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | ||
628c89cc | 1547 | static int mount_setup_unit( |
e537352b LP |
1548 | Manager *m, |
1549 | const char *what, | |
1550 | const char *where, | |
1551 | const char *options, | |
1552 | const char *fstype, | |
e537352b | 1553 | bool set_flags) { |
057d9ab8 | 1554 | |
03b8cfed FB |
1555 | _cleanup_free_ char *e = NULL; |
1556 | MountSetupFlags flags; | |
057d9ab8 LP |
1557 | Unit *u; |
1558 | int r; | |
b08d03ff | 1559 | |
f50e0a01 | 1560 | assert(m); |
b08d03ff LP |
1561 | assert(what); |
1562 | assert(where); | |
e537352b LP |
1563 | assert(options); |
1564 | assert(fstype); | |
1565 | ||
e537352b LP |
1566 | /* Ignore API mount points. They should never be referenced in |
1567 | * dependencies ever. */ | |
33ff02c9 | 1568 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1569 | return 0; |
b08d03ff | 1570 | |
8d567588 LP |
1571 | if (streq(fstype, "autofs")) |
1572 | return 0; | |
1573 | ||
4e85aff4 LP |
1574 | /* probably some kind of swap, ignore */ |
1575 | if (!is_path(where)) | |
b08d03ff LP |
1576 | return 0; |
1577 | ||
7410616c LP |
1578 | r = unit_name_from_path(where, ".mount", &e); |
1579 | if (r < 0) | |
1580 | return r; | |
b08d03ff | 1581 | |
7d17cfbc MS |
1582 | u = manager_get_unit(m, e); |
1583 | if (!u) { | |
03b8cfed FB |
1584 | /* First time we see this mount point meaning that it's |
1585 | * not been initiated by a mount unit but rather by the | |
1586 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1587 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1588 | if (r < 0) |
1589 | goto fail; | |
1590 | ||
03b8cfed FB |
1591 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1592 | if (r < 0) | |
1593 | unit_free(u); | |
1594 | } else | |
1595 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1596 | |
03b8cfed | 1597 | if (r < 0) |
e537352b | 1598 | goto fail; |
ff5f34d0 | 1599 | |
6b1dc2bd | 1600 | if (set_flags) { |
03b8cfed FB |
1601 | MOUNT(u)->is_mounted = flags.is_mounted; |
1602 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1603 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1604 | } |
1605 | ||
03b8cfed | 1606 | if (flags.just_changed) |
ff5f34d0 | 1607 | unit_add_to_dbus_queue(u); |
c1e1601e | 1608 | |
b08d03ff | 1609 | return 0; |
b08d03ff | 1610 | fail: |
628c89cc | 1611 | log_warning_errno(r, "Failed to set up mount unit: %m"); |
4e85aff4 | 1612 | return r; |
b08d03ff LP |
1613 | } |
1614 | ||
ef734fd6 | 1615 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1616 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1617 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1618 | int r = 0; |
b08d03ff LP |
1619 | |
1620 | assert(m); | |
1621 | ||
628c89cc LP |
1622 | t = mnt_new_table(); |
1623 | if (!t) | |
8d3ae2bd | 1624 | return log_oom(); |
b08d03ff | 1625 | |
628c89cc LP |
1626 | i = mnt_new_iter(MNT_ITER_FORWARD); |
1627 | if (!i) | |
1628 | return log_oom(); | |
1629 | ||
1630 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1631 | if (r < 0) |
628c89cc | 1632 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1633 | |
5cca8def ZJS |
1634 | r = 0; |
1635 | for (;;) { | |
8d3ae2bd | 1636 | const char *device, *path, *options, *fstype; |
527b7a42 | 1637 | _cleanup_free_ char *d = NULL, *p = NULL; |
628c89cc | 1638 | struct libmnt_fs *fs; |
8d3ae2bd | 1639 | int k; |
b08d03ff | 1640 | |
628c89cc | 1641 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1642 | if (k == 1) |
1643 | break; | |
628c89cc LP |
1644 | if (k < 0) |
1645 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1646 | |
8d3ae2bd CL |
1647 | device = mnt_fs_get_source(fs); |
1648 | path = mnt_fs_get_target(fs); | |
1649 | options = mnt_fs_get_options(fs); | |
1650 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1651 | |
c0a7f8d3 DM |
1652 | if (!device || !path) |
1653 | continue; | |
1654 | ||
527b7a42 | 1655 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1656 | return log_oom(); |
1657 | ||
527b7a42 | 1658 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1659 | return log_oom(); |
b08d03ff | 1660 | |
628c89cc LP |
1661 | (void) device_found_node(m, d, true, DEVICE_FOUND_MOUNT, set_flags); |
1662 | ||
1663 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1664 | if (r == 0 && k < 0) |
60b912f6 | 1665 | r = k; |
b08d03ff LP |
1666 | } |
1667 | ||
e537352b LP |
1668 | return r; |
1669 | } | |
1670 | ||
1671 | static void mount_shutdown(Manager *m) { | |
1672 | assert(m); | |
1673 | ||
718db961 LP |
1674 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1675 | ||
d379d442 KZ |
1676 | mnt_unref_monitor(m->mount_monitor); |
1677 | m->mount_monitor = NULL; | |
b08d03ff LP |
1678 | } |
1679 | ||
7a7821c8 | 1680 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1681 | Mount *m = MOUNT(u); |
7a7821c8 | 1682 | usec_t t; |
68db7a3b ZJS |
1683 | int r; |
1684 | ||
1685 | if (!m->timer_event_source) | |
1686 | return 0; | |
1687 | ||
7a7821c8 | 1688 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1689 | if (r < 0) |
1690 | return r; | |
7a7821c8 LP |
1691 | if (t == USEC_INFINITY) |
1692 | return 0; | |
68db7a3b | 1693 | |
7a7821c8 | 1694 | *timeout = t; |
68db7a3b ZJS |
1695 | return 1; |
1696 | } | |
1697 | ||
1201cae7 | 1698 | static int synthesize_root_mount(Manager *m) { |
11222d0f LP |
1699 | Unit *u; |
1700 | int r; | |
1701 | ||
1702 | assert(m); | |
1703 | ||
1704 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1705 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1706 | ||
1707 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1708 | if (!u) { | |
a581e45a | 1709 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
1201cae7 LP |
1710 | if (r < 0) |
1711 | return log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
11222d0f LP |
1712 | } |
1713 | ||
1714 | u->perpetual = true; | |
1715 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1716 | ||
1717 | unit_add_to_load_queue(u); | |
1718 | unit_add_to_dbus_queue(u); | |
1201cae7 LP |
1719 | |
1720 | return 0; | |
11222d0f LP |
1721 | } |
1722 | ||
1723 | static bool mount_is_mounted(Mount *m) { | |
1724 | assert(m); | |
1725 | ||
1726 | return UNIT(m)->perpetual || m->is_mounted; | |
1727 | } | |
1728 | ||
ba64af90 | 1729 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1730 | int r; |
d379d442 | 1731 | |
b08d03ff LP |
1732 | assert(m); |
1733 | ||
1201cae7 LP |
1734 | r = synthesize_root_mount(m); |
1735 | if (r < 0) | |
1736 | goto fail; | |
11222d0f | 1737 | |
8d3ae2bd CL |
1738 | mnt_init_debug(0); |
1739 | ||
d379d442 KZ |
1740 | if (!m->mount_monitor) { |
1741 | int fd; | |
ef734fd6 | 1742 | |
d379d442 KZ |
1743 | m->mount_monitor = mnt_new_monitor(); |
1744 | if (!m->mount_monitor) { | |
ba64af90 | 1745 | log_oom(); |
718db961 | 1746 | goto fail; |
d379d442 | 1747 | } |
29083707 | 1748 | |
d379d442 | 1749 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1750 | if (r < 0) { |
1751 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1752 | goto fail; |
ba64af90 LP |
1753 | } |
1754 | ||
d379d442 | 1755 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1756 | if (r < 0) { |
1757 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1758 | goto fail; |
ba64af90 | 1759 | } |
90598531 | 1760 | |
d379d442 KZ |
1761 | /* mnt_unref_monitor() will close the fd */ |
1762 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1763 | if (r < 0) { |
1764 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1765 | goto fail; |
ba64af90 | 1766 | } |
befb6d54 | 1767 | |
d379d442 | 1768 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1769 | if (r < 0) { |
1770 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1771 | goto fail; |
ba64af90 | 1772 | } |
befb6d54 | 1773 | |
d379d442 | 1774 | r = sd_event_source_set_priority(m->mount_event_source, -10); |
ba64af90 LP |
1775 | if (r < 0) { |
1776 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1777 | goto fail; |
ba64af90 | 1778 | } |
7dfbe2e3 | 1779 | |
d379d442 | 1780 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1781 | } |
1782 | ||
e62d8c39 ZJS |
1783 | r = mount_load_proc_self_mountinfo(m, false); |
1784 | if (r < 0) | |
b08d03ff LP |
1785 | goto fail; |
1786 | ||
ba64af90 | 1787 | return; |
b08d03ff LP |
1788 | |
1789 | fail: | |
1790 | mount_shutdown(m); | |
5cb5a6ff LP |
1791 | } |
1792 | ||
718db961 | 1793 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1794 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1795 | Manager *m = userdata; |
fcd8b266 LP |
1796 | const char *what; |
1797 | Iterator i; | |
595ed347 | 1798 | Unit *u; |
ef734fd6 LP |
1799 | int r; |
1800 | ||
1801 | assert(m); | |
d379d442 | 1802 | assert(revents & EPOLLIN); |
ef734fd6 | 1803 | |
d379d442 | 1804 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1805 | bool rescan = false; |
befb6d54 | 1806 | |
d379d442 KZ |
1807 | /* Drain all events and verify that the event is valid. |
1808 | * | |
1809 | * Note that libmount also monitors /run/mount mkdir if the | |
1810 | * directory does not exist yet. The mkdir may generate event | |
1811 | * which is irrelevant for us. | |
1812 | * | |
1813 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1814 | do { | |
1815 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1816 | if (r == 0) | |
1817 | rescan = true; | |
1818 | else if (r < 0) | |
1819 | return log_error_errno(r, "Failed to drain libmount events"); | |
1820 | } while (r == 0); | |
1821 | ||
1822 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1823 | if (!rescan) |
1824 | return 0; | |
1825 | } | |
ef734fd6 | 1826 | |
4f0eedb7 ZJS |
1827 | r = mount_load_proc_self_mountinfo(m, true); |
1828 | if (r < 0) { | |
e537352b | 1829 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1830 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1831 | Mount *mount = MOUNT(u); | |
e537352b LP |
1832 | |
1833 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1834 | } | |
1835 | ||
718db961 | 1836 | return 0; |
ef734fd6 LP |
1837 | } |
1838 | ||
1839 | manager_dispatch_load_queue(m); | |
1840 | ||
595ed347 MS |
1841 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1842 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1843 | |
11222d0f | 1844 | if (!mount_is_mounted(mount)) { |
e537352b | 1845 | |
394763f6 LP |
1846 | /* A mount point is not around right now. It |
1847 | * might be gone, or might never have | |
1848 | * existed. */ | |
1849 | ||
1850 | if (mount->from_proc_self_mountinfo && | |
1851 | mount->parameters_proc_self_mountinfo.what) { | |
1852 | ||
1853 | /* Remember that this device might just have disappeared */ | |
1854 | if (set_ensure_allocated(&gone, &string_hash_ops) < 0 || | |
1855 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) | |
1856 | log_oom(); /* we don't care too much about OOM here... */ | |
1857 | } | |
fcd8b266 | 1858 | |
ef734fd6 | 1859 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1860 | |
1861 | switch (mount->state) { | |
1862 | ||
1863 | case MOUNT_MOUNTED: | |
aef83136 LP |
1864 | /* This has just been unmounted by |
1865 | * somebody else, follow the state | |
1866 | * change. */ | |
cf6f7f66 | 1867 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1868 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1869 | break; |
1870 | ||
1871 | default: | |
e537352b | 1872 | break; |
e537352b LP |
1873 | } |
1874 | ||
1875 | } else if (mount->just_mounted || mount->just_changed) { | |
1876 | ||
fcd8b266 | 1877 | /* A mount point was added or changed */ |
e537352b LP |
1878 | |
1879 | switch (mount->state) { | |
1880 | ||
1881 | case MOUNT_DEAD: | |
fdf20a31 | 1882 | case MOUNT_FAILED: |
4b58153d LP |
1883 | |
1884 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1885 | * generate a new invocation ID for this implicitly and automatically. */ | |
1886 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1887 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1888 | break; |
1889 | ||
1890 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1891 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1892 | break; |
1893 | ||
1894 | default: | |
1895 | /* Nothing really changed, but let's | |
1896 | * issue an notification call | |
1897 | * nonetheless, in case somebody is | |
1898 | * waiting for this. (e.g. file system | |
1899 | * ro/rw remounts.) */ | |
1900 | mount_set_state(mount, mount->state); | |
1901 | break; | |
1902 | } | |
394763f6 | 1903 | } |
fcd8b266 | 1904 | |
11222d0f | 1905 | if (mount_is_mounted(mount) && |
394763f6 LP |
1906 | mount->from_proc_self_mountinfo && |
1907 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1908 | |
394763f6 LP |
1909 | if (set_ensure_allocated(&around, &string_hash_ops) < 0 || |
1910 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) | |
1911 | log_oom(); | |
e537352b LP |
1912 | } |
1913 | ||
1914 | /* Reset the flags for later calls */ | |
1915 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1916 | } | |
718db961 | 1917 | |
fcd8b266 LP |
1918 | SET_FOREACH(what, gone, i) { |
1919 | if (set_contains(around, what)) | |
1920 | continue; | |
1921 | ||
1922 | /* Let the device units know that the device is no longer mounted */ | |
1923 | (void) device_found_node(m, what, false, DEVICE_FOUND_MOUNT, true); | |
1924 | } | |
1925 | ||
718db961 | 1926 | return 0; |
e537352b LP |
1927 | } |
1928 | ||
fdf20a31 | 1929 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1930 | Mount *m = MOUNT(u); |
1931 | ||
1932 | assert(m); | |
1933 | ||
fdf20a31 | 1934 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1935 | mount_set_state(m, MOUNT_DEAD); |
1936 | ||
9d2f5178 LP |
1937 | m->result = MOUNT_SUCCESS; |
1938 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1939 | } |
1940 | ||
718db961 | 1941 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1942 | Mount *m = MOUNT(u); |
1943 | ||
1944 | assert(m); | |
1945 | ||
814cc562 | 1946 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1947 | } |
1948 | ||
291d565a LP |
1949 | static int mount_control_pid(Unit *u) { |
1950 | Mount *m = MOUNT(u); | |
1951 | ||
1952 | assert(m); | |
1953 | ||
1954 | return m->control_pid; | |
1955 | } | |
1956 | ||
a16e1123 LP |
1957 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1958 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1959 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1960 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1961 | }; | |
1962 | ||
1963 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1964 | ||
9d2f5178 LP |
1965 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1966 | [MOUNT_SUCCESS] = "success", | |
1967 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1968 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1969 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1970 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1971 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1972 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
9d2f5178 LP |
1973 | }; |
1974 | ||
1975 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1976 | ||
87f0e418 | 1977 | const UnitVTable mount_vtable = { |
7d17cfbc | 1978 | .object_size = sizeof(Mount), |
718db961 LP |
1979 | .exec_context_offset = offsetof(Mount, exec_context), |
1980 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1981 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1982 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1983 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1984 | |
f975e971 LP |
1985 | .sections = |
1986 | "Unit\0" | |
1987 | "Mount\0" | |
1988 | "Install\0", | |
4ad49000 | 1989 | .private_section = "Mount", |
71645aca | 1990 | |
e537352b LP |
1991 | .init = mount_init, |
1992 | .load = mount_load, | |
034c6ed7 | 1993 | .done = mount_done, |
e537352b | 1994 | |
f50e0a01 LP |
1995 | .coldplug = mount_coldplug, |
1996 | ||
034c6ed7 | 1997 | .dump = mount_dump, |
5cb5a6ff | 1998 | |
e537352b LP |
1999 | .start = mount_start, |
2000 | .stop = mount_stop, | |
2001 | .reload = mount_reload, | |
2002 | ||
8a0867d6 LP |
2003 | .kill = mount_kill, |
2004 | ||
a16e1123 LP |
2005 | .serialize = mount_serialize, |
2006 | .deserialize_item = mount_deserialize_item, | |
2007 | ||
f50e0a01 | 2008 | .active_state = mount_active_state, |
10a94420 | 2009 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2010 | |
701cc384 LP |
2011 | .check_gc = mount_check_gc, |
2012 | ||
e537352b | 2013 | .sigchld_event = mount_sigchld_event, |
e537352b | 2014 | |
fdf20a31 | 2015 | .reset_failed = mount_reset_failed, |
291d565a LP |
2016 | |
2017 | .control_pid = mount_control_pid, | |
5632e374 | 2018 | |
718db961 | 2019 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
2020 | .bus_set_property = bus_mount_set_property, |
2021 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2022 | |
68db7a3b ZJS |
2023 | .get_timeout = mount_get_timeout, |
2024 | ||
0e252f6b TG |
2025 | .can_transient = true, |
2026 | ||
f50e0a01 | 2027 | .enumerate = mount_enumerate, |
c6918296 MS |
2028 | .shutdown = mount_shutdown, |
2029 | ||
2030 | .status_message_formats = { | |
2031 | .starting_stopping = { | |
2032 | [0] = "Mounting %s...", | |
2033 | [1] = "Unmounting %s...", | |
2034 | }, | |
2035 | .finished_start_job = { | |
2036 | [JOB_DONE] = "Mounted %s.", | |
2037 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2038 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2039 | }, | |
2040 | .finished_stop_job = { | |
2041 | [JOB_DONE] = "Unmounted %s.", | |
2042 | [JOB_FAILED] = "Failed unmounting %s.", | |
2043 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2044 | }, | |
2045 | }, | |
5cb5a6ff | 2046 | }; |