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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
4f5dd394 | 4 | #include <signal.h> |
b08d03ff | 5 | #include <stdio.h> |
ef734fd6 | 6 | #include <sys/epoll.h> |
5cb5a6ff | 7 | |
20ad4cfd | 8 | #include "sd-messages.h" |
4f5dd394 | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
4139c1b2 | 11 | #include "dbus-mount.h" |
6fcbec6f | 12 | #include "dbus-unit.h" |
57b7a260 | 13 | #include "device.h" |
9a57c629 | 14 | #include "exit-status.h" |
f97b34a6 | 15 | #include "format-util.h" |
4f5dd394 | 16 | #include "fstab-util.h" |
fb36b133 | 17 | #include "libmount-util.h" |
4f5dd394 LP |
18 | #include "log.h" |
19 | #include "manager.h" | |
20 | #include "mkdir.h" | |
21 | #include "mount-setup.h" | |
22 | #include "mount.h" | |
049af8ad | 23 | #include "mountpoint-util.h" |
6bedfcbb | 24 | #include "parse-util.h" |
4f5dd394 | 25 | #include "path-util.h" |
7b3e062c | 26 | #include "process-util.h" |
d68c645b | 27 | #include "serialize.h" |
4f5dd394 | 28 | #include "special.h" |
8b43440b | 29 | #include "string-table.h" |
b5efdb8a | 30 | #include "string-util.h" |
4f5dd394 LP |
31 | #include "strv.h" |
32 | #include "unit-name.h" | |
33 | #include "unit.h" | |
5cb5a6ff | 34 | |
7d54a03a LP |
35 | #define RETRY_UMOUNT_MAX 32 |
36 | ||
f50e0a01 LP |
37 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
38 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
39 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 40 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 41 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 42 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 43 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
44 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
45 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
46 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
47 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 48 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 49 | }; |
5cb5a6ff | 50 | |
718db961 LP |
51 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
52 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
53 | ||
c634f3d2 LP |
54 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
55 | return IN_SET(state, | |
56 | MOUNT_MOUNTING, | |
57 | MOUNT_MOUNTING_DONE, | |
58 | MOUNT_REMOUNTING, | |
59 | MOUNT_REMOUNTING_SIGTERM, | |
60 | MOUNT_REMOUNTING_SIGKILL, | |
61 | MOUNT_UNMOUNTING, | |
62 | MOUNT_UNMOUNTING_SIGTERM, | |
63 | MOUNT_UNMOUNTING_SIGKILL); | |
64 | } | |
65 | ||
7121cbcf LP |
66 | static bool mount_is_network(const MountParameters *p) { |
67 | assert(p); | |
68 | ||
69 | if (fstab_test_option(p->options, "_netdev\0")) | |
fc676b00 ZJS |
70 | return true; |
71 | ||
7121cbcf | 72 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
73 | return true; |
74 | ||
75 | return false; | |
76 | } | |
77 | ||
d3bd0986 MK |
78 | static bool mount_is_loop(const MountParameters *p) { |
79 | assert(p); | |
80 | ||
81 | if (fstab_test_option(p->options, "loop\0")) | |
82 | return true; | |
83 | ||
84 | return false; | |
85 | } | |
86 | ||
e6a7b9f4 | 87 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
88 | assert(p); |
89 | ||
d15d0333 | 90 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
91 | return true; |
92 | ||
d15d0333 | 93 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
94 | return true; |
95 | ||
96 | return false; | |
97 | } | |
98 | ||
ebc8968b FB |
99 | static bool mount_is_bound_to_device(const Mount *m) { |
100 | const MountParameters *p; | |
101 | ||
102 | if (m->from_fragment) | |
103 | return true; | |
104 | ||
105 | p = &m->parameters_proc_self_mountinfo; | |
106 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
107 | } | |
108 | ||
06e457b1 | 109 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
110 | assert(p); |
111 | ||
06e457b1 LP |
112 | /* Quotas are not enabled on network filesystems, but we want them, for example, on storage connected via |
113 | * iscsi. We hence don't use mount_is_network() here, as that would also return true for _netdev devices. */ | |
11041c84 | 114 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
115 | return false; |
116 | ||
117 | if (mount_is_bind(p)) | |
118 | return false; | |
119 | ||
d15d0333 ZJS |
120 | return fstab_test_option(p->options, |
121 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
122 | } |
123 | ||
a16e1123 LP |
124 | static void mount_init(Unit *u) { |
125 | Mount *m = MOUNT(u); | |
5cb5a6ff | 126 | |
a16e1123 | 127 | assert(u); |
ac155bb8 | 128 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 129 | |
1f19a534 | 130 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
131 | |
132 | m->exec_context.std_output = u->manager->default_std_output; | |
133 | m->exec_context.std_error = u->manager->default_std_error; | |
134 | ||
3e5235b0 LP |
135 | m->directory_mode = 0755; |
136 | ||
f00929ad DJL |
137 | /* We need to make sure that /usr/bin/mount is always called |
138 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
139 | * side doesn't send us another mount request while we are |
140 | * already trying to comply its last one. */ | |
74922904 | 141 | m->exec_context.same_pgrp = true; |
8d567588 | 142 | |
a16e1123 | 143 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 144 | |
5bcb0f2b | 145 | u->ignore_on_isolate = true; |
8d567588 LP |
146 | } |
147 | ||
36c16a7c | 148 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
149 | int r; |
150 | ||
151 | assert(m); | |
152 | ||
718db961 | 153 | if (m->timer_event_source) { |
36c16a7c | 154 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
155 | if (r < 0) |
156 | return r; | |
157 | ||
158 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
159 | } | |
160 | ||
36c16a7c LP |
161 | if (usec == USEC_INFINITY) |
162 | return 0; | |
163 | ||
7dfbe2e3 | 164 | r = sd_event_add_time( |
6a0f1f6d LP |
165 | UNIT(m)->manager->event, |
166 | &m->timer_event_source, | |
167 | CLOCK_MONOTONIC, | |
36c16a7c | 168 | usec, 0, |
6a0f1f6d | 169 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
170 | if (r < 0) |
171 | return r; | |
172 | ||
173 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
174 | ||
175 | return 0; | |
718db961 LP |
176 | } |
177 | ||
a16e1123 | 178 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
179 | assert(m); |
180 | ||
181 | if (m->control_pid <= 0) | |
182 | return; | |
183 | ||
184 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
185 | m->control_pid = 0; | |
186 | } | |
187 | ||
e537352b LP |
188 | static void mount_parameters_done(MountParameters *p) { |
189 | assert(p); | |
190 | ||
a26592cf LP |
191 | p->what = mfree(p->what); |
192 | p->options = mfree(p->options); | |
193 | p->fstype = mfree(p->fstype); | |
e537352b LP |
194 | } |
195 | ||
87f0e418 | 196 | static void mount_done(Unit *u) { |
ef734fd6 | 197 | Mount *m = MOUNT(u); |
034c6ed7 | 198 | |
ef734fd6 | 199 | assert(m); |
034c6ed7 | 200 | |
a1e58e8e | 201 | m->where = mfree(m->where); |
f50e0a01 | 202 | |
e537352b LP |
203 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
204 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 205 | |
e8a565cb | 206 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
207 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
208 | m->control_command = NULL; | |
f50e0a01 | 209 | |
29206d46 LP |
210 | dynamic_creds_unref(&m->dynamic_creds); |
211 | ||
a16e1123 | 212 | mount_unwatch_control_pid(m); |
f50e0a01 | 213 | |
718db961 | 214 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
215 | } |
216 | ||
44a6b1b6 | 217 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
218 | assert(m); |
219 | ||
220 | if (m->from_fragment) | |
221 | return &m->parameters_fragment; | |
cb39ed3f LP |
222 | |
223 | return NULL; | |
224 | } | |
225 | ||
44a6b1b6 | 226 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
227 | assert(m); |
228 | ||
229 | if (m->from_proc_self_mountinfo) | |
230 | return &m->parameters_proc_self_mountinfo; | |
231 | ||
6b1dc2bd | 232 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
233 | } |
234 | ||
b7bbf890 ZJS |
235 | static int update_parameters_proc_self_mount_info( |
236 | Mount *m, | |
237 | const char *what, | |
238 | const char *options, | |
239 | const char *fstype) { | |
240 | ||
241 | MountParameters *p; | |
242 | int r, q, w; | |
243 | ||
244 | p = &m->parameters_proc_self_mountinfo; | |
245 | ||
246 | r = free_and_strdup(&p->what, what); | |
247 | if (r < 0) | |
248 | return r; | |
249 | ||
250 | q = free_and_strdup(&p->options, options); | |
251 | if (q < 0) | |
252 | return q; | |
253 | ||
254 | w = free_and_strdup(&p->fstype, fstype); | |
255 | if (w < 0) | |
256 | return w; | |
257 | ||
258 | return r > 0 || q > 0 || w > 0; | |
259 | } | |
260 | ||
eef85c4a | 261 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 262 | MountParameters *pm; |
ac155bb8 | 263 | Unit *other; |
a57f7e2c LP |
264 | Iterator i; |
265 | Set *s; | |
b08d03ff LP |
266 | int r; |
267 | ||
6e2ef85b | 268 | assert(m); |
b08d03ff | 269 | |
a57f7e2c | 270 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
271 | _cleanup_free_ char *parent = NULL; |
272 | ||
273 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
274 | |
275 | parent = dirname_malloc(m->where); | |
276 | if (!parent) | |
277 | return -ENOMEM; | |
01f78473 | 278 | |
eef85c4a | 279 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 280 | if (r < 0) |
01f78473 | 281 | return r; |
4f0eedb7 | 282 | } |
01f78473 | 283 | |
eef85c4a LP |
284 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
285 | * or a loop mount) to be available. */ | |
a57f7e2c | 286 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
287 | if (pm && pm->what && |
288 | path_is_absolute(pm->what) && | |
d3bd0986 | 289 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 290 | |
eef85c4a | 291 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 292 | if (r < 0) |
6e2ef85b | 293 | return r; |
4f0eedb7 | 294 | } |
b08d03ff | 295 | |
eef85c4a | 296 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
297 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
298 | SET_FOREACH(other, s, i) { | |
b08d03ff | 299 | |
a57f7e2c LP |
300 | if (other->load_state != UNIT_LOADED) |
301 | continue; | |
b08d03ff | 302 | |
a57f7e2c LP |
303 | if (other == UNIT(m)) |
304 | continue; | |
b08d03ff | 305 | |
eef85c4a | 306 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 307 | if (r < 0) |
6e2ef85b | 308 | return r; |
b08d03ff | 309 | |
a57f7e2c LP |
310 | if (UNIT(m)->fragment_path) { |
311 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 312 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
313 | if (r < 0) |
314 | return r; | |
315 | } | |
7c8fa05c LP |
316 | } |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
eef85c4a | 321 | static int mount_add_device_dependencies(Mount *m) { |
eef85c4a LP |
322 | UnitDependencyMask mask; |
323 | MountParameters *p; | |
ebc8968b | 324 | UnitDependency dep; |
9fff8a1f | 325 | int r; |
173a8d04 LP |
326 | |
327 | assert(m); | |
328 | ||
06e97888 | 329 | p = get_mount_parameters(m); |
6b1dc2bd | 330 | if (!p) |
173a8d04 LP |
331 | return 0; |
332 | ||
9fff8a1f | 333 | if (!p->what) |
173a8d04 | 334 | return 0; |
5c78d8e2 | 335 | |
dd144c63 LP |
336 | if (mount_is_bind(p)) |
337 | return 0; | |
338 | ||
339 | if (!is_device_path(p->what)) | |
340 | return 0; | |
341 | ||
7ba2711d LP |
342 | /* /dev/root is a really weird thing, it's not a real device, |
343 | * but just a path the kernel exports for the root file system | |
344 | * specified on the kernel command line. Ignore it here. */ | |
345 | if (path_equal(p->what, "/dev/root")) | |
346 | return 0; | |
347 | ||
dd144c63 LP |
348 | if (path_equal(m->where, "/")) |
349 | return 0; | |
350 | ||
ebc8968b FB |
351 | /* Mount units from /proc/self/mountinfo are not bound to devices |
352 | * by default since they're subject to races when devices are | |
353 | * unplugged. But the user can still force this dep with an | |
354 | * appropriate option (or udev property) so the mount units are | |
355 | * automatically stopped when the device disappears suddenly. */ | |
356 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
357 | ||
c52c2dc6 ZJS |
358 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
359 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT : UNIT_DEPENDENCY_FILE; | |
eef85c4a | 360 | |
142b8142 | 361 | r = unit_add_node_dependency(UNIT(m), p->what, false, dep, mask); |
dd144c63 LP |
362 | if (r < 0) |
363 | return r; | |
9fff8a1f | 364 | |
9fff8a1f | 365 | return 0; |
173a8d04 LP |
366 | } |
367 | ||
eef85c4a LP |
368 | static int mount_add_quota_dependencies(Mount *m) { |
369 | UnitDependencyMask mask; | |
6b1dc2bd | 370 | MountParameters *p; |
eef85c4a | 371 | int r; |
6b1dc2bd LP |
372 | |
373 | assert(m); | |
374 | ||
463d0d15 | 375 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
376 | return 0; |
377 | ||
378 | p = get_mount_parameters_fragment(m); | |
379 | if (!p) | |
380 | return 0; | |
381 | ||
06e457b1 | 382 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
383 | return 0; |
384 | ||
eef85c4a LP |
385 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
386 | ||
5a724170 | 387 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
388 | if (r < 0) |
389 | return r; | |
390 | ||
5a724170 | 391 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
392 | if (r < 0) |
393 | return r; | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
ad2706db | 398 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 399 | MountParameters *p; |
ad2706db | 400 | assert(m); |
88ac30a1 | 401 | |
ad2706db LP |
402 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
403 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
404 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
405 | ||
406 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
407 | return true; | |
408 | ||
409 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
410 | "/", | |
411 | "/usr")) | |
412 | return true; | |
88ac30a1 | 413 | |
ad2706db LP |
414 | if (PATH_STARTSWITH_SET(m->where, |
415 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
416 | "/proc", /* All of this is API VFS */ | |
417 | "/sys", /* … dito … */ | |
418 | "/dev")) /* … dito … */ | |
419 | return true; | |
420 | ||
421 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 422 | p = get_mount_parameters(m); |
ad2706db LP |
423 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
424 | return true; | |
88ac30a1 | 425 | |
ad2706db | 426 | return false; |
88ac30a1 TG |
427 | } |
428 | ||
2edd4434 | 429 | static int mount_add_default_dependencies(Mount *m) { |
d54bab90 | 430 | const char *after, *before; |
eef85c4a | 431 | UnitDependencyMask mask; |
9ddc4a26 | 432 | MountParameters *p; |
8c8203db | 433 | bool nofail; |
d54bab90 | 434 | int r; |
2edd4434 LP |
435 | |
436 | assert(m); | |
437 | ||
4c9ea260 LP |
438 | if (!UNIT(m)->default_dependencies) |
439 | return 0; | |
440 | ||
ad2706db LP |
441 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
442 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
443 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
444 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 445 | return 0; |
2edd4434 | 446 | |
874d3404 LP |
447 | p = get_mount_parameters(m); |
448 | if (!p) | |
6b1dc2bd LP |
449 | return 0; |
450 | ||
eef85c4a | 451 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
8c8203db | 452 | nofail = m->from_fragment ? fstab_test_yes_no_option(m->parameters_fragment.options, "nofail\0" "fail\0") : false; |
eef85c4a | 453 | |
e8d2f6cd | 454 | if (mount_is_network(p)) { |
ea0ec5ce LP |
455 | /* We order ourselves after network.target. This is |
456 | * primarily useful at shutdown: services that take | |
457 | * down the network should order themselves before | |
458 | * network.target, so that they are shut down only | |
459 | * after this mount unit is stopped. */ | |
6b1dc2bd | 460 | |
35d8c19a | 461 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
462 | if (r < 0) |
463 | return r; | |
a63a5c46 | 464 | |
ea0ec5ce LP |
465 | /* We pull in network-online.target, and order |
466 | * ourselves after it. This is useful at start-up to | |
467 | * actively pull in tools that want to be started | |
468 | * before we start mounting network file systems, and | |
469 | * whose purpose it is to delay this until the network | |
470 | * is "up". */ | |
471 | ||
5a724170 | 472 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
473 | if (r < 0) |
474 | return r; | |
ea0ec5ce LP |
475 | |
476 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
d54bab90 LP |
477 | before = SPECIAL_REMOTE_FS_TARGET; |
478 | } else { | |
ea0ec5ce | 479 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
480 | before = SPECIAL_LOCAL_FS_TARGET; |
481 | } | |
482 | ||
8c8203db YW |
483 | if (!nofail) { |
484 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, true, mask); | |
485 | if (r < 0) | |
486 | return r; | |
487 | } | |
ea0ec5ce | 488 | |
35d8c19a | 489 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
490 | if (r < 0) |
491 | return r; | |
e8d2f6cd | 492 | |
5a724170 | 493 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
494 | if (r < 0) |
495 | return r; | |
2edd4434 | 496 | |
3e3852b3 | 497 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 498 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 499 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
500 | if (r < 0) |
501 | return r; | |
502 | } | |
503 | ||
2edd4434 LP |
504 | return 0; |
505 | } | |
506 | ||
8d567588 | 507 | static int mount_verify(Mount *m) { |
a57f7e2c | 508 | _cleanup_free_ char *e = NULL; |
b294b79f | 509 | MountParameters *p; |
7410616c | 510 | int r; |
a57f7e2c | 511 | |
8d567588 LP |
512 | assert(m); |
513 | ||
1124fe6f | 514 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
515 | return 0; |
516 | ||
1df96fcb | 517 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
518 | return -ENOENT; |
519 | ||
7410616c LP |
520 | r = unit_name_from_path(m->where, ".mount", &e); |
521 | if (r < 0) | |
f2341e0a | 522 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 523 | |
7410616c | 524 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 525 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 526 | return -ENOEXEC; |
8d567588 LP |
527 | } |
528 | ||
33ff02c9 | 529 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 530 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 531 | return -ENOEXEC; |
33ff02c9 LP |
532 | } |
533 | ||
b294b79f MO |
534 | p = get_mount_parameters_fragment(m); |
535 | if (p && !p->what) { | |
f2341e0a | 536 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 537 | return -ENOEXEC; |
4e85aff4 LP |
538 | } |
539 | ||
4819ff03 | 540 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 541 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 542 | return -ENOEXEC; |
4d0e5dbd LP |
543 | } |
544 | ||
8d567588 LP |
545 | return 0; |
546 | } | |
547 | ||
1a4ac875 MS |
548 | static int mount_add_extras(Mount *m) { |
549 | Unit *u = UNIT(m); | |
e537352b LP |
550 | int r; |
551 | ||
e821075a LP |
552 | assert(m); |
553 | ||
1f736476 LP |
554 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
555 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
556 | * to run with an already set up unit. */ | |
557 | ||
e821075a | 558 | if (u->fragment_path) |
1a4ac875 | 559 | m->from_fragment = true; |
e537352b | 560 | |
1a4ac875 | 561 | if (!m->where) { |
7410616c LP |
562 | r = unit_name_to_path(u->id, &m->where); |
563 | if (r < 0) | |
564 | return r; | |
1a4ac875 | 565 | } |
a16e1123 | 566 | |
858d36c1 | 567 | path_simplify(m->where, false); |
e537352b | 568 | |
e821075a | 569 | if (!u->description) { |
1a4ac875 MS |
570 | r = unit_set_description(u, m->where); |
571 | if (r < 0) | |
173a8d04 | 572 | return r; |
1a4ac875 | 573 | } |
6e2ef85b | 574 | |
eef85c4a | 575 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
576 | if (r < 0) |
577 | return r; | |
6e2ef85b | 578 | |
eef85c4a | 579 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
580 | if (r < 0) |
581 | return r; | |
6e2ef85b | 582 | |
eef85c4a | 583 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
584 | if (r < 0) |
585 | return r; | |
e537352b | 586 | |
598459ce LP |
587 | r = unit_patch_contexts(u); |
588 | if (r < 0) | |
589 | return r; | |
4e67ddd6 | 590 | |
598459ce | 591 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
592 | if (r < 0) |
593 | return r; | |
594 | ||
d79200e2 | 595 | r = unit_set_default_slice(u); |
1a4ac875 MS |
596 | if (r < 0) |
597 | return r; | |
598 | ||
4c9ea260 LP |
599 | r = mount_add_default_dependencies(m); |
600 | if (r < 0) | |
601 | return r; | |
598459ce | 602 | |
1a4ac875 MS |
603 | return 0; |
604 | } | |
605 | ||
11222d0f LP |
606 | static int mount_load_root_mount(Unit *u) { |
607 | assert(u); | |
608 | ||
609 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
610 | return 0; | |
611 | ||
612 | u->perpetual = true; | |
613 | u->default_dependencies = false; | |
614 | ||
615 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
616 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
617 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
618 | ||
619 | if (!u->description) | |
620 | u->description = strdup("Root Mount"); | |
621 | ||
622 | return 1; | |
623 | } | |
624 | ||
1a4ac875 MS |
625 | static int mount_load(Unit *u) { |
626 | Mount *m = MOUNT(u); | |
780ae022 | 627 | int r, q, w; |
1a4ac875 MS |
628 | |
629 | assert(u); | |
630 | assert(u->load_state == UNIT_STUB); | |
631 | ||
11222d0f | 632 | r = mount_load_root_mount(u); |
11222d0f LP |
633 | |
634 | if (m->from_proc_self_mountinfo || u->perpetual) | |
780ae022 | 635 | q = unit_load_fragment_and_dropin_optional(u); |
8eba616f | 636 | else |
780ae022 LP |
637 | q = unit_load_fragment_and_dropin(u); |
638 | ||
639 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
640 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
641 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
642 | * 'slice' field for a unit once it is active. */ | |
643 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
644 | w = mount_add_extras(m); | |
645 | else | |
646 | w = 0; | |
647 | ||
1a4ac875 MS |
648 | if (r < 0) |
649 | return r; | |
780ae022 LP |
650 | if (q < 0) |
651 | return q; | |
652 | if (w < 0) | |
653 | return w; | |
e537352b | 654 | |
8d567588 | 655 | return mount_verify(m); |
e537352b LP |
656 | } |
657 | ||
658 | static void mount_set_state(Mount *m, MountState state) { | |
659 | MountState old_state; | |
660 | assert(m); | |
661 | ||
6fcbec6f LP |
662 | if (m->state != state) |
663 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
664 | ||
e537352b LP |
665 | old_state = m->state; |
666 | m->state = state; | |
667 | ||
c634f3d2 | 668 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 669 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 670 | mount_unwatch_control_pid(m); |
e537352b | 671 | m->control_command = NULL; |
a16e1123 | 672 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
673 | } |
674 | ||
675 | if (state != old_state) | |
f2341e0a | 676 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 677 | |
2ad2e41a LP |
678 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
679 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
680 | } |
681 | ||
be847e82 | 682 | static int mount_coldplug(Unit *u) { |
e537352b | 683 | Mount *m = MOUNT(u); |
a16e1123 LP |
684 | MountState new_state = MOUNT_DEAD; |
685 | int r; | |
e537352b LP |
686 | |
687 | assert(m); | |
688 | assert(m->state == MOUNT_DEAD); | |
689 | ||
a16e1123 LP |
690 | if (m->deserialized_state != m->state) |
691 | new_state = m->deserialized_state; | |
692 | else if (m->from_proc_self_mountinfo) | |
693 | new_state = MOUNT_MOUNTED; | |
e537352b | 694 | |
5bcb0f2b LP |
695 | if (new_state == m->state) |
696 | return 0; | |
e537352b | 697 | |
c386f588 LP |
698 | if (m->control_pid > 0 && |
699 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 700 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b | 701 | |
f75f613d | 702 | r = unit_watch_pid(UNIT(m), m->control_pid, false); |
5bcb0f2b LP |
703 | if (r < 0) |
704 | return r; | |
e537352b | 705 | |
36c16a7c | 706 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
707 | if (r < 0) |
708 | return r; | |
a16e1123 | 709 | } |
e537352b | 710 | |
e8a565cb | 711 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 712 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
713 | (void) unit_setup_exec_runtime(u); |
714 | } | |
29206d46 | 715 | |
5bcb0f2b | 716 | mount_set_state(m, new_state); |
e537352b | 717 | return 0; |
e537352b LP |
718 | } |
719 | ||
720 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 721 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
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 | 742 | "%sLazyUnmount: %s\n" |
91899792 | 743 | "%sForceUnmount: %s\n" |
ac8956ef | 744 | "%sTimeoutSec: %s\n", |
a16e1123 | 745 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 746 | prefix, mount_result_to_string(m->result), |
e537352b | 747 | prefix, m->where, |
1e4fc9b1 HH |
748 | prefix, p ? strna(p->what) : "n/a", |
749 | prefix, p ? strna(p->fstype) : "n/a", | |
750 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
751 | prefix, yes_no(m->from_proc_self_mountinfo), |
752 | prefix, yes_no(m->from_fragment), | |
ad2706db | 753 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 754 | prefix, m->directory_mode, |
49915de2 | 755 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 756 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
757 | prefix, yes_no(m->force_unmount), |
758 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
759 | |
760 | if (m->control_pid > 0) | |
761 | fprintf(f, | |
ccd06097 ZJS |
762 | "%sControl PID: "PID_FMT"\n", |
763 | prefix, m->control_pid); | |
e537352b LP |
764 | |
765 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 766 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 767 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
768 | } |
769 | ||
a16e1123 | 770 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 771 | |
b9c04eaf | 772 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
773 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
774 | .stdin_fd = -1, | |
775 | .stdout_fd = -1, | |
776 | .stderr_fd = -1, | |
777 | .exec_fd = -1, | |
9fa95f85 | 778 | }; |
3c7416b6 LP |
779 | pid_t pid; |
780 | int r; | |
a16e1123 LP |
781 | |
782 | assert(m); | |
783 | assert(c); | |
784 | assert(_pid); | |
785 | ||
3c7416b6 | 786 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
787 | if (r < 0) |
788 | return r; | |
789 | ||
36c16a7c | 790 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 791 | if (r < 0) |
36c16a7c | 792 | return r; |
a16e1123 | 793 | |
1ad6e8b3 LP |
794 | r = unit_set_exec_params(UNIT(m), &exec_params); |
795 | if (r < 0) | |
796 | return r; | |
9fa95f85 | 797 | |
f2341e0a LP |
798 | r = exec_spawn(UNIT(m), |
799 | c, | |
4ad49000 | 800 | &m->exec_context, |
9fa95f85 | 801 | &exec_params, |
613b411c | 802 | m->exec_runtime, |
29206d46 | 803 | &m->dynamic_creds, |
4ad49000 LP |
804 | &pid); |
805 | if (r < 0) | |
36c16a7c | 806 | return r; |
a16e1123 | 807 | |
f75f613d | 808 | r = unit_watch_pid(UNIT(m), pid, true); |
4ad49000 | 809 | if (r < 0) |
36c16a7c | 810 | return r; |
a16e1123 LP |
811 | |
812 | *_pid = pid; | |
813 | ||
814 | return 0; | |
a16e1123 LP |
815 | } |
816 | ||
9d2f5178 | 817 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
818 | assert(m); |
819 | ||
a0fef983 | 820 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 821 | m->result = f; |
e537352b | 822 | |
aac99f30 | 823 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
29206d46 LP |
824 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
825 | ||
e8a565cb | 826 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 827 | |
3536f49e | 828 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 829 | |
00d9ef85 LP |
830 | unit_unref_uid_gid(UNIT(m), true); |
831 | ||
29206d46 | 832 | dynamic_creds_destroy(&m->dynamic_creds); |
c52c2dc6 ZJS |
833 | |
834 | /* Any dependencies based on /proc/self/mountinfo are now stale */ | |
835 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
e537352b LP |
836 | } |
837 | ||
9d2f5178 | 838 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
839 | assert(m); |
840 | ||
a0fef983 | 841 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 842 | m->result = f; |
80876c20 LP |
843 | |
844 | mount_set_state(m, MOUNT_MOUNTED); | |
845 | } | |
846 | ||
22af0e58 LP |
847 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
848 | assert(m); | |
849 | ||
850 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
851 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
852 | * ultimately we just mirror the kernel's internal state on this. */ | |
853 | ||
854 | if (m->from_proc_self_mountinfo) | |
855 | mount_enter_mounted(m, f); | |
856 | else | |
857 | mount_enter_dead(m, f); | |
858 | } | |
859 | ||
860 | static int state_to_kill_operation(MountState state) { | |
861 | switch (state) { | |
862 | ||
863 | case MOUNT_REMOUNTING_SIGTERM: | |
864 | case MOUNT_UNMOUNTING_SIGTERM: | |
865 | return KILL_TERMINATE; | |
866 | ||
867 | case MOUNT_REMOUNTING_SIGKILL: | |
868 | case MOUNT_UNMOUNTING_SIGKILL: | |
869 | return KILL_KILL; | |
870 | ||
871 | default: | |
872 | return _KILL_OPERATION_INVALID; | |
873 | } | |
874 | } | |
875 | ||
9d2f5178 | 876 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
877 | int r; |
878 | ||
879 | assert(m); | |
880 | ||
a0fef983 | 881 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 882 | m->result = f; |
e537352b | 883 | |
cd2086fe LP |
884 | r = unit_kill_context( |
885 | UNIT(m), | |
886 | &m->kill_context, | |
22af0e58 | 887 | state_to_kill_operation(state), |
cd2086fe LP |
888 | -1, |
889 | m->control_pid, | |
890 | false); | |
891 | if (r < 0) | |
892 | goto fail; | |
e537352b | 893 | |
cd2086fe | 894 | if (r > 0) { |
36c16a7c | 895 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 896 | if (r < 0) |
80876c20 | 897 | goto fail; |
e537352b | 898 | |
80876c20 | 899 | mount_set_state(m, state); |
22af0e58 | 900 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 901 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 902 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 903 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 904 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 905 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 906 | else |
22af0e58 | 907 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
908 | |
909 | return; | |
910 | ||
911 | fail: | |
f2341e0a | 912 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 913 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
914 | } |
915 | ||
9d2f5178 | 916 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
917 | int r; |
918 | ||
919 | assert(m); | |
920 | ||
7d54a03a LP |
921 | /* Start counting our attempts */ |
922 | if (!IN_SET(m->state, | |
923 | MOUNT_UNMOUNTING, | |
924 | MOUNT_UNMOUNTING_SIGTERM, | |
925 | MOUNT_UNMOUNTING_SIGKILL)) | |
926 | m->n_retry_umount = 0; | |
927 | ||
a16e1123 LP |
928 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
929 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 930 | |
83897d54 | 931 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
932 | if (r >= 0 && m->lazy_unmount) |
933 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
934 | if (r >= 0 && m->force_unmount) |
935 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 936 | if (r < 0) |
e537352b LP |
937 | goto fail; |
938 | ||
a16e1123 | 939 | mount_unwatch_control_pid(m); |
5e94833f | 940 | |
7d54a03a LP |
941 | r = mount_spawn(m, m->control_command, &m->control_pid); |
942 | if (r < 0) | |
e537352b LP |
943 | goto fail; |
944 | ||
945 | mount_set_state(m, MOUNT_UNMOUNTING); | |
946 | ||
947 | return; | |
948 | ||
949 | fail: | |
f2341e0a | 950 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 951 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
952 | } |
953 | ||
8d567588 | 954 | static void mount_enter_mounting(Mount *m) { |
e537352b | 955 | int r; |
cb39ed3f | 956 | MountParameters *p; |
e537352b LP |
957 | |
958 | assert(m); | |
959 | ||
25cd4964 | 960 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
961 | if (r < 0) |
962 | goto fail; | |
963 | ||
964 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 965 | |
f2341e0a | 966 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
a4634b21 LP |
967 | unit_warn_leftover_processes(UNIT(m)); |
968 | ||
969 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
970 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
971 | ||
cb39ed3f | 972 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 973 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 974 | if (p && mount_is_bind(p)) |
f2341e0a | 975 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 976 | |
b294b79f | 977 | if (p) { |
17a1c597 ZJS |
978 | _cleanup_free_ char *opts = NULL; |
979 | ||
b294b79f | 980 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
981 | if (r < 0) |
982 | goto fail; | |
983 | ||
b294b79f | 984 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
985 | if (r >= 0 && m->sloppy_options) |
986 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
987 | if (r >= 0 && p->fstype) |
988 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 989 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 990 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 991 | } else |
e537352b | 992 | r = -ENOENT; |
e537352b LP |
993 | if (r < 0) |
994 | goto fail; | |
995 | ||
a16e1123 | 996 | mount_unwatch_control_pid(m); |
5e94833f | 997 | |
257f1d8e LP |
998 | r = mount_spawn(m, m->control_command, &m->control_pid); |
999 | if (r < 0) | |
e537352b LP |
1000 | goto fail; |
1001 | ||
1002 | mount_set_state(m, MOUNT_MOUNTING); | |
1003 | ||
1004 | return; | |
1005 | ||
1006 | fail: | |
f2341e0a | 1007 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1008 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1009 | } |
1010 | ||
850b7410 LP |
1011 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1012 | assert(m); | |
1013 | ||
1014 | /* Only store the first error we encounter */ | |
1015 | if (m->reload_result != MOUNT_SUCCESS) | |
1016 | return; | |
1017 | ||
1018 | m->reload_result = result; | |
1019 | } | |
1020 | ||
9d2f5178 | 1021 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1022 | int r; |
b294b79f | 1023 | MountParameters *p; |
e537352b LP |
1024 | |
1025 | assert(m); | |
1026 | ||
850b7410 LP |
1027 | /* Reset reload result when we are about to start a new remount operation */ |
1028 | m->reload_result = MOUNT_SUCCESS; | |
1029 | ||
a16e1123 LP |
1030 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1031 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1032 | |
b294b79f MO |
1033 | p = get_mount_parameters_fragment(m); |
1034 | if (p) { | |
e537352b LP |
1035 | const char *o; |
1036 | ||
b294b79f MO |
1037 | if (p->options) |
1038 | o = strjoina("remount,", p->options); | |
718db961 | 1039 | else |
e537352b LP |
1040 | o = "remount"; |
1041 | ||
f00929ad | 1042 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1043 | p->what, m->where, |
e86b3761 | 1044 | "-o", o, NULL); |
e86b3761 ZJS |
1045 | if (r >= 0 && m->sloppy_options) |
1046 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1047 | if (r >= 0 && p->fstype) |
1048 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1049 | } else |
e537352b | 1050 | r = -ENOENT; |
60b912f6 | 1051 | if (r < 0) |
e537352b | 1052 | goto fail; |
e537352b | 1053 | |
a16e1123 | 1054 | mount_unwatch_control_pid(m); |
5e94833f | 1055 | |
718db961 LP |
1056 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1057 | if (r < 0) | |
e537352b LP |
1058 | goto fail; |
1059 | ||
1060 | mount_set_state(m, MOUNT_REMOUNTING); | |
1061 | ||
1062 | return; | |
1063 | ||
1064 | fail: | |
f2341e0a | 1065 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1066 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1067 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1068 | } |
1069 | ||
7eba1463 LP |
1070 | static void mount_cycle_clear(Mount *m) { |
1071 | assert(m); | |
1072 | ||
1073 | /* Clear all state we shall forget for this new cycle */ | |
1074 | ||
1075 | m->result = MOUNT_SUCCESS; | |
1076 | m->reload_result = MOUNT_SUCCESS; | |
1077 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1078 | UNIT(m)->reset_accounting = true; | |
1079 | } | |
1080 | ||
e537352b LP |
1081 | static int mount_start(Unit *u) { |
1082 | Mount *m = MOUNT(u); | |
07299350 | 1083 | int r; |
e537352b LP |
1084 | |
1085 | assert(m); | |
1086 | ||
1087 | /* We cannot fulfill this request right now, try again later | |
1088 | * please! */ | |
f2aed307 LP |
1089 | if (IN_SET(m->state, |
1090 | MOUNT_UNMOUNTING, | |
1091 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1092 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1093 | return -EAGAIN; |
1094 | ||
1095 | /* Already on it! */ | |
60b912f6 | 1096 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1097 | return 0; |
1098 | ||
f2aed307 | 1099 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1100 | |
97a3f4ee | 1101 | r = unit_test_start_limit(u); |
07299350 LP |
1102 | if (r < 0) { |
1103 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1104 | return r; | |
1105 | } | |
1106 | ||
4b58153d LP |
1107 | r = unit_acquire_invocation_id(u); |
1108 | if (r < 0) | |
1109 | return r; | |
1110 | ||
7eba1463 | 1111 | mount_cycle_clear(m); |
8d567588 | 1112 | mount_enter_mounting(m); |
7eba1463 | 1113 | |
82a2b6bb | 1114 | return 1; |
e537352b LP |
1115 | } |
1116 | ||
1117 | static int mount_stop(Unit *u) { | |
1118 | Mount *m = MOUNT(u); | |
1119 | ||
1120 | assert(m); | |
1121 | ||
22af0e58 LP |
1122 | switch (m->state) { |
1123 | ||
1124 | case MOUNT_UNMOUNTING: | |
1125 | case MOUNT_UNMOUNTING_SIGKILL: | |
1126 | case MOUNT_UNMOUNTING_SIGTERM: | |
1127 | /* Already on it */ | |
e537352b LP |
1128 | return 0; |
1129 | ||
22af0e58 LP |
1130 | case MOUNT_MOUNTING: |
1131 | case MOUNT_MOUNTING_DONE: | |
1132 | case MOUNT_REMOUNTING: | |
1133 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1134 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1135 | return 0; | |
e537352b | 1136 | |
22af0e58 LP |
1137 | case MOUNT_REMOUNTING_SIGTERM: |
1138 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1139 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1140 | return 0; | |
1141 | ||
1142 | case MOUNT_REMOUNTING_SIGKILL: | |
1143 | /* as above */ | |
1144 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1145 | return 0; | |
1146 | ||
1147 | case MOUNT_MOUNTED: | |
1148 | mount_enter_unmounting(m); | |
1149 | return 1; | |
1150 | ||
1151 | default: | |
1152 | assert_not_reached("Unexpected state."); | |
1153 | } | |
e537352b LP |
1154 | } |
1155 | ||
1156 | static int mount_reload(Unit *u) { | |
1157 | Mount *m = MOUNT(u); | |
1158 | ||
1159 | assert(m); | |
e537352b LP |
1160 | assert(m->state == MOUNT_MOUNTED); |
1161 | ||
9d2f5178 | 1162 | mount_enter_remounting(m); |
22af0e58 | 1163 | |
2d018ae2 | 1164 | return 1; |
e537352b LP |
1165 | } |
1166 | ||
a16e1123 LP |
1167 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1168 | Mount *m = MOUNT(u); | |
1169 | ||
1170 | assert(m); | |
1171 | assert(f); | |
1172 | assert(fds); | |
1173 | ||
d68c645b LP |
1174 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1175 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1176 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1177 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1178 | |
1179 | if (m->control_pid > 0) | |
d68c645b | 1180 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1181 | |
1182 | if (m->control_command_id >= 0) | |
d68c645b | 1183 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
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); | |
2c09fb81 | 1190 | int r; |
a16e1123 LP |
1191 | |
1192 | assert(u); | |
1193 | assert(key); | |
1194 | assert(value); | |
1195 | assert(fds); | |
1196 | ||
1197 | if (streq(key, "state")) { | |
1198 | MountState state; | |
1199 | ||
1200 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1201 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1202 | else |
1203 | m->deserialized_state = state; | |
2c09fb81 | 1204 | |
9d2f5178 LP |
1205 | } else if (streq(key, "result")) { |
1206 | MountResult f; | |
a16e1123 | 1207 | |
9d2f5178 LP |
1208 | f = mount_result_from_string(value); |
1209 | if (f < 0) | |
f2341e0a | 1210 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1211 | else if (f != MOUNT_SUCCESS) |
1212 | m->result = f; | |
1213 | ||
1214 | } else if (streq(key, "reload-result")) { | |
1215 | MountResult f; | |
1216 | ||
1217 | f = mount_result_from_string(value); | |
1218 | if (f < 0) | |
f2341e0a | 1219 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1220 | else if (f != MOUNT_SUCCESS) |
1221 | m->reload_result = f; | |
a16e1123 | 1222 | |
2c09fb81 LP |
1223 | } else if (streq(key, "n-retry-umount")) { |
1224 | ||
1225 | r = safe_atou(value, &m->n_retry_umount); | |
1226 | if (r < 0) | |
1227 | log_unit_debug(u, "Failed to parse n-retry-umount value: %s", value); | |
1228 | ||
a16e1123 | 1229 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1230 | |
3f459cd9 | 1231 | if (parse_pid(value, &m->control_pid) < 0) |
f2341e0a | 1232 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
3f459cd9 | 1233 | |
a16e1123 LP |
1234 | } else if (streq(key, "control-command")) { |
1235 | MountExecCommand id; | |
1236 | ||
f2341e0a LP |
1237 | id = mount_exec_command_from_string(value); |
1238 | if (id < 0) | |
1239 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1240 | else { |
1241 | m->control_command_id = id; | |
1242 | m->control_command = m->exec_command + id; | |
1243 | } | |
a16e1123 | 1244 | } else |
f2341e0a | 1245 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1246 | |
1247 | return 0; | |
1248 | } | |
1249 | ||
44a6b1b6 | 1250 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1251 | assert(u); |
1252 | ||
1253 | return state_translation_table[MOUNT(u)->state]; | |
1254 | } | |
1255 | ||
44a6b1b6 | 1256 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1257 | assert(u); |
1258 | ||
a16e1123 | 1259 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1260 | } |
1261 | ||
f2f725e5 | 1262 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1263 | Mount *m = MOUNT(u); |
1264 | ||
1265 | assert(m); | |
1266 | ||
f2f725e5 ZJS |
1267 | if (m->from_proc_self_mountinfo) |
1268 | return false; | |
1269 | ||
1270 | return true; | |
701cc384 LP |
1271 | } |
1272 | ||
e537352b LP |
1273 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1274 | Mount *m = MOUNT(u); | |
9d2f5178 | 1275 | MountResult f; |
e537352b LP |
1276 | |
1277 | assert(m); | |
1278 | assert(pid >= 0); | |
1279 | ||
8c47c732 LP |
1280 | if (pid != m->control_pid) |
1281 | return; | |
e537352b | 1282 | |
e537352b LP |
1283 | m->control_pid = 0; |
1284 | ||
1f0958f6 | 1285 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1286 | f = MOUNT_SUCCESS; |
1287 | else if (code == CLD_EXITED) | |
1288 | f = MOUNT_FAILURE_EXIT_CODE; | |
1289 | else if (code == CLD_KILLED) | |
1290 | f = MOUNT_FAILURE_SIGNAL; | |
1291 | else if (code == CLD_DUMPED) | |
1292 | f = MOUNT_FAILURE_CORE_DUMP; | |
1293 | else | |
1294 | assert_not_reached("Unknown code"); | |
1295 | ||
850b7410 LP |
1296 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1297 | mount_set_reload_result(m, f); | |
1298 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1299 | m->result = f; |
8c47c732 | 1300 | |
a16e1123 | 1301 | if (m->control_command) { |
6ea832a2 | 1302 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1303 | |
a16e1123 LP |
1304 | m->control_command = NULL; |
1305 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1306 | } | |
1307 | ||
91bbd9b7 LP |
1308 | unit_log_process_exit( |
1309 | u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1310 | "Mount process", | |
1311 | mount_exec_command_to_string(m->control_command_id), | |
1312 | code, status); | |
e537352b | 1313 | |
006aabbd AJ |
1314 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1315 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1316 | |
1317 | switch (m->state) { | |
1318 | ||
1319 | case MOUNT_MOUNTING: | |
006aabbd | 1320 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1321 | |
006aabbd AJ |
1322 | if (f == MOUNT_SUCCESS) { |
1323 | /* Either /bin/mount has an unexpected definition of success, | |
1324 | * or someone raced us and we lost. */ | |
1325 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1326 | f = MOUNT_FAILURE_PROTOCOL; | |
1327 | } | |
1328 | mount_enter_dead(m, f); | |
1329 | break; | |
1330 | ||
1331 | case MOUNT_MOUNTING_DONE: | |
1332 | mount_enter_mounted(m, f); | |
e537352b LP |
1333 | break; |
1334 | ||
e2f3b44c | 1335 | case MOUNT_REMOUNTING: |
e2f3b44c | 1336 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1337 | case MOUNT_REMOUNTING_SIGKILL: |
1338 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1339 | break; |
1340 | ||
e537352b | 1341 | case MOUNT_UNMOUNTING: |
e537352b | 1342 | |
3cc96856 | 1343 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1344 | |
1345 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1346 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1347 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1348 | |
1349 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1350 | log_unit_debug(u, "Mount still present, trying again."); | |
1351 | m->n_retry_umount++; | |
1352 | mount_enter_unmounting(m); | |
1353 | } else { | |
006aabbd | 1354 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1355 | mount_enter_mounted(m, f); |
1356 | } | |
1357 | } else | |
3cc96856 | 1358 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1359 | |
e537352b | 1360 | break; |
57018361 AJ |
1361 | |
1362 | case MOUNT_UNMOUNTING_SIGKILL: | |
1363 | case MOUNT_UNMOUNTING_SIGTERM: | |
1364 | mount_enter_dead_or_mounted(m, f); | |
1365 | break; | |
e537352b LP |
1366 | |
1367 | default: | |
1368 | assert_not_reached("Uh, control process died at wrong time."); | |
1369 | } | |
c4e2ceae LP |
1370 | |
1371 | /* Notify clients about changed exit status */ | |
1372 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1373 | } |
1374 | ||
718db961 LP |
1375 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1376 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1377 | |
1378 | assert(m); | |
718db961 | 1379 | assert(m->timer_event_source == source); |
e537352b LP |
1380 | |
1381 | switch (m->state) { | |
1382 | ||
1383 | case MOUNT_MOUNTING: | |
1384 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1385 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1386 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1387 | break; |
1388 | ||
1389 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1390 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1391 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1392 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1393 | break; |
1394 | ||
22af0e58 LP |
1395 | case MOUNT_REMOUNTING_SIGTERM: |
1396 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1397 | |
4819ff03 | 1398 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1399 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1400 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1401 | } else { |
22af0e58 LP |
1402 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1403 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1404 | } |
e537352b LP |
1405 | break; |
1406 | ||
22af0e58 LP |
1407 | case MOUNT_REMOUNTING_SIGKILL: |
1408 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1409 | |
22af0e58 LP |
1410 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1411 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1412 | break; | |
1413 | ||
1414 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1415 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1416 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1417 | break; |
1418 | ||
1419 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1420 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1421 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1422 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1423 | } else { |
22af0e58 LP |
1424 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1425 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1426 | } |
e537352b LP |
1427 | break; |
1428 | ||
e537352b | 1429 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1430 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1431 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1432 | break; |
1433 | ||
1434 | default: | |
1435 | assert_not_reached("Timeout at wrong time."); | |
1436 | } | |
718db961 LP |
1437 | |
1438 | return 0; | |
e537352b LP |
1439 | } |
1440 | ||
03b8cfed | 1441 | static int mount_setup_new_unit( |
839ee058 LP |
1442 | Manager *m, |
1443 | const char *name, | |
03b8cfed FB |
1444 | const char *what, |
1445 | const char *where, | |
1446 | const char *options, | |
1447 | const char *fstype, | |
ec88d1ea | 1448 | MountProcFlags *ret_flags, |
839ee058 | 1449 | Unit **ret) { |
03b8cfed | 1450 | |
839ee058 | 1451 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1452 | int r; |
03b8cfed | 1453 | |
839ee058 LP |
1454 | assert(m); |
1455 | assert(name); | |
ec88d1ea | 1456 | assert(ret_flags); |
839ee058 LP |
1457 | assert(ret); |
1458 | ||
1459 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1460 | if (r < 0) | |
1461 | return r; | |
03b8cfed | 1462 | |
e10fe042 LP |
1463 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1464 | if (r < 0) | |
1465 | return r; | |
03b8cfed | 1466 | |
e10fe042 LP |
1467 | r = free_and_strdup(&MOUNT(u)->where, where); |
1468 | if (r < 0) | |
1469 | return r; | |
03b8cfed | 1470 | |
bbee24bc LP |
1471 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1472 | if (r < 0) | |
1473 | return r; | |
03b8cfed | 1474 | |
6d7e89b0 LP |
1475 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the time we load |
1476 | * the unit file for it (and thus add in extra deps right after) we know what source to attributes the deps | |
1477 | * to.*/ | |
1478 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1479 | ||
1480 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything else is | |
1481 | * loaded in now. */ | |
cfcd4318 | 1482 | unit_add_to_load_queue(u); |
26e35b16 | 1483 | |
ec88d1ea | 1484 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1485 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1486 | return 0; |
1487 | } | |
1488 | ||
1489 | static int mount_setup_existing_unit( | |
1490 | Unit *u, | |
1491 | const char *what, | |
1492 | const char *where, | |
1493 | const char *options, | |
1494 | const char *fstype, | |
ec88d1ea | 1495 | MountProcFlags *ret_flags) { |
03b8cfed | 1496 | |
ec88d1ea | 1497 | MountProcFlags flags = MOUNT_PROC_IS_MOUNTED; |
bbee24bc | 1498 | int r; |
03b8cfed FB |
1499 | |
1500 | assert(u); | |
1501 | assert(flags); | |
1502 | ||
1503 | if (!MOUNT(u)->where) { | |
1504 | MOUNT(u)->where = strdup(where); | |
1505 | if (!MOUNT(u)->where) | |
1506 | return -ENOMEM; | |
1507 | } | |
1508 | ||
bbee24bc LP |
1509 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1510 | if (r < 0) | |
1511 | return r; | |
ec88d1ea LP |
1512 | if (r > 0) |
1513 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1514 | |
d253a45e | 1515 | if (!MOUNT(u)->from_proc_self_mountinfo || FLAGS_SET(MOUNT(u)->proc_flags, MOUNT_PROC_JUST_MOUNTED)) |
ec88d1ea | 1516 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1517 | |
1518 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1519 | |
f8064c4f LP |
1520 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1521 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1522 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1523 | u->load_state = UNIT_LOADED; |
1524 | u->load_error = 0; | |
1525 | ||
ec88d1ea | 1526 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1527 | } |
1528 | ||
ec88d1ea | 1529 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1530 | /* If things changed, then make sure that all deps are regenerated. Let's |
1531 | * first remove all automatic deps, and then add in the new ones. */ | |
1532 | ||
1533 | unit_remove_dependencies(u, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
1534 | ||
1535 | r = mount_add_extras(MOUNT(u)); | |
1536 | if (r < 0) | |
1537 | return r; | |
1538 | } | |
03b8cfed | 1539 | |
ec88d1ea | 1540 | *ret_flags = flags; |
03b8cfed FB |
1541 | return 0; |
1542 | } | |
1543 | ||
628c89cc | 1544 | static int mount_setup_unit( |
e537352b LP |
1545 | Manager *m, |
1546 | const char *what, | |
1547 | const char *where, | |
1548 | const char *options, | |
1549 | const char *fstype, | |
e537352b | 1550 | bool set_flags) { |
057d9ab8 | 1551 | |
03b8cfed | 1552 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1553 | MountProcFlags flags; |
057d9ab8 LP |
1554 | Unit *u; |
1555 | int r; | |
b08d03ff | 1556 | |
f50e0a01 | 1557 | assert(m); |
b08d03ff LP |
1558 | assert(what); |
1559 | assert(where); | |
e537352b LP |
1560 | assert(options); |
1561 | assert(fstype); | |
1562 | ||
e537352b LP |
1563 | /* Ignore API mount points. They should never be referenced in |
1564 | * dependencies ever. */ | |
33ff02c9 | 1565 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1566 | return 0; |
b08d03ff | 1567 | |
8d567588 LP |
1568 | if (streq(fstype, "autofs")) |
1569 | return 0; | |
1570 | ||
4e85aff4 LP |
1571 | /* probably some kind of swap, ignore */ |
1572 | if (!is_path(where)) | |
b08d03ff LP |
1573 | return 0; |
1574 | ||
7410616c LP |
1575 | r = unit_name_from_path(where, ".mount", &e); |
1576 | if (r < 0) | |
60b8c203 | 1577 | return log_error_errno(r, "Failed to generate unit name from path '%s': %m", where); |
b08d03ff | 1578 | |
7d17cfbc | 1579 | u = manager_get_unit(m, e); |
839ee058 | 1580 | if (u) |
03b8cfed | 1581 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 LP |
1582 | else |
1583 | /* First time we see this mount point meaning that it's not been initiated by a mount unit but rather | |
1584 | * by the sysadmin having called mount(8) directly. */ | |
1585 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); | |
03b8cfed | 1586 | if (r < 0) |
60b8c203 | 1587 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
ff5f34d0 | 1588 | |
ec88d1ea LP |
1589 | /* If the mount changed properties or state, let's notify our clients */ |
1590 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1591 | unit_add_to_dbus_queue(u); |
c1e1601e | 1592 | |
ec88d1ea LP |
1593 | if (set_flags) |
1594 | MOUNT(u)->proc_flags = flags; | |
1595 | ||
b08d03ff | 1596 | return 0; |
b08d03ff LP |
1597 | } |
1598 | ||
ef734fd6 | 1599 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1600 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1601 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
ba0d56f5 | 1602 | int r; |
b08d03ff LP |
1603 | |
1604 | assert(m); | |
1605 | ||
628c89cc | 1606 | t = mnt_new_table(); |
628c89cc | 1607 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1608 | if (!t || !i) |
628c89cc LP |
1609 | return log_oom(); |
1610 | ||
1611 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1612 | if (r < 0) |
628c89cc | 1613 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1614 | |
5cca8def | 1615 | for (;;) { |
95b862b0 | 1616 | struct libmnt_fs *fs; |
8d3ae2bd | 1617 | const char *device, *path, *options, *fstype; |
8d3ae2bd | 1618 | int k; |
b08d03ff | 1619 | |
628c89cc | 1620 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1621 | if (k == 1) |
1622 | break; | |
628c89cc LP |
1623 | if (k < 0) |
1624 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1625 | |
8d3ae2bd CL |
1626 | device = mnt_fs_get_source(fs); |
1627 | path = mnt_fs_get_target(fs); | |
1628 | options = mnt_fs_get_options(fs); | |
1629 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1630 | |
c0a7f8d3 DM |
1631 | if (!device || !path) |
1632 | continue; | |
1633 | ||
9d1b2b22 | 1634 | device_found_node(m, device, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1635 | |
9d1b2b22 | 1636 | (void) mount_setup_unit(m, device, path, options, fstype, set_flags); |
b08d03ff LP |
1637 | } |
1638 | ||
ba0d56f5 | 1639 | return 0; |
e537352b LP |
1640 | } |
1641 | ||
1642 | static void mount_shutdown(Manager *m) { | |
1643 | assert(m); | |
1644 | ||
718db961 LP |
1645 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1646 | ||
d379d442 KZ |
1647 | mnt_unref_monitor(m->mount_monitor); |
1648 | m->mount_monitor = NULL; | |
b08d03ff LP |
1649 | } |
1650 | ||
7a7821c8 | 1651 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1652 | Mount *m = MOUNT(u); |
7a7821c8 | 1653 | usec_t t; |
68db7a3b ZJS |
1654 | int r; |
1655 | ||
1656 | if (!m->timer_event_source) | |
1657 | return 0; | |
1658 | ||
7a7821c8 | 1659 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1660 | if (r < 0) |
1661 | return r; | |
7a7821c8 LP |
1662 | if (t == USEC_INFINITY) |
1663 | return 0; | |
68db7a3b | 1664 | |
7a7821c8 | 1665 | *timeout = t; |
68db7a3b ZJS |
1666 | return 1; |
1667 | } | |
1668 | ||
04eb582a | 1669 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1670 | Unit *u; |
1671 | int r; | |
1672 | ||
1673 | assert(m); | |
1674 | ||
1675 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1676 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1677 | ||
1678 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1679 | if (!u) { | |
a581e45a | 1680 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1681 | if (r < 0) { |
1682 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1683 | return; | |
1684 | } | |
11222d0f LP |
1685 | } |
1686 | ||
1687 | u->perpetual = true; | |
1688 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1689 | ||
1690 | unit_add_to_load_queue(u); | |
1691 | unit_add_to_dbus_queue(u); | |
1692 | } | |
1693 | ||
1694 | static bool mount_is_mounted(Mount *m) { | |
1695 | assert(m); | |
1696 | ||
ec88d1ea | 1697 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1698 | } |
1699 | ||
ba64af90 | 1700 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1701 | int r; |
d379d442 | 1702 | |
b08d03ff LP |
1703 | assert(m); |
1704 | ||
8d3ae2bd CL |
1705 | mnt_init_debug(0); |
1706 | ||
d379d442 KZ |
1707 | if (!m->mount_monitor) { |
1708 | int fd; | |
ef734fd6 | 1709 | |
d379d442 KZ |
1710 | m->mount_monitor = mnt_new_monitor(); |
1711 | if (!m->mount_monitor) { | |
ba64af90 | 1712 | log_oom(); |
718db961 | 1713 | goto fail; |
d379d442 | 1714 | } |
29083707 | 1715 | |
d379d442 | 1716 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1717 | if (r < 0) { |
1718 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1719 | goto fail; |
ba64af90 LP |
1720 | } |
1721 | ||
d379d442 | 1722 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1723 | if (r < 0) { |
1724 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1725 | goto fail; |
ba64af90 | 1726 | } |
90598531 | 1727 | |
d379d442 KZ |
1728 | /* mnt_unref_monitor() will close the fd */ |
1729 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1730 | if (r < 0) { |
1731 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1732 | goto fail; |
ba64af90 | 1733 | } |
befb6d54 | 1734 | |
d379d442 | 1735 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1736 | if (r < 0) { |
1737 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1738 | goto fail; |
ba64af90 | 1739 | } |
befb6d54 | 1740 | |
83231637 | 1741 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1742 | if (r < 0) { |
1743 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1744 | goto fail; |
ba64af90 | 1745 | } |
7dfbe2e3 | 1746 | |
d379d442 | 1747 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1748 | } |
1749 | ||
e62d8c39 ZJS |
1750 | r = mount_load_proc_self_mountinfo(m, false); |
1751 | if (r < 0) | |
b08d03ff LP |
1752 | goto fail; |
1753 | ||
ba64af90 | 1754 | return; |
b08d03ff LP |
1755 | |
1756 | fail: | |
1757 | mount_shutdown(m); | |
5cb5a6ff LP |
1758 | } |
1759 | ||
718db961 | 1760 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
ec8126d7 | 1761 | _cleanup_set_free_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1762 | Manager *m = userdata; |
ec8126d7 ZJS |
1763 | const char *what; |
1764 | Iterator i; | |
1765 | Unit *u; | |
ef734fd6 LP |
1766 | int r; |
1767 | ||
1768 | assert(m); | |
d379d442 | 1769 | assert(revents & EPOLLIN); |
ef734fd6 | 1770 | |
d379d442 | 1771 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1772 | bool rescan = false; |
befb6d54 | 1773 | |
d379d442 KZ |
1774 | /* Drain all events and verify that the event is valid. |
1775 | * | |
1776 | * Note that libmount also monitors /run/mount mkdir if the | |
1777 | * directory does not exist yet. The mkdir may generate event | |
1778 | * which is irrelevant for us. | |
1779 | * | |
1780 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1781 | do { | |
1782 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1783 | if (r == 0) | |
1784 | rescan = true; | |
1785 | else if (r < 0) | |
5e1ee764 | 1786 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1787 | } while (r == 0); |
1788 | ||
1789 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1790 | if (!rescan) |
1791 | return 0; | |
1792 | } | |
ef734fd6 | 1793 | |
4f0eedb7 ZJS |
1794 | r = mount_load_proc_self_mountinfo(m, true); |
1795 | if (r < 0) { | |
e537352b | 1796 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
1797 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
1798 | MOUNT(u)->proc_flags = 0; | |
e537352b | 1799 | |
ec8126d7 | 1800 | return 0; |
ef734fd6 LP |
1801 | } |
1802 | ||
1803 | manager_dispatch_load_queue(m); | |
1804 | ||
595ed347 MS |
1805 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1806 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1807 | |
11222d0f | 1808 | if (!mount_is_mounted(mount)) { |
e537352b | 1809 | |
394763f6 LP |
1810 | /* A mount point is not around right now. It |
1811 | * might be gone, or might never have | |
1812 | * existed. */ | |
1813 | ||
1814 | if (mount->from_proc_self_mountinfo && | |
1815 | mount->parameters_proc_self_mountinfo.what) { | |
1816 | ||
1817 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1818 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
b6418dc9 | 1819 | set_put_strdup(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 LP |
1820 | log_oom(); /* we don't care too much about OOM here... */ |
1821 | } | |
fcd8b266 | 1822 | |
ef734fd6 | 1823 | mount->from_proc_self_mountinfo = false; |
c52c2dc6 | 1824 | assert_se(update_parameters_proc_self_mount_info(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
1825 | |
1826 | switch (mount->state) { | |
1827 | ||
1828 | case MOUNT_MOUNTED: | |
7eba1463 | 1829 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 1830 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1831 | break; |
1832 | ||
1833 | default: | |
e537352b | 1834 | break; |
e537352b LP |
1835 | } |
1836 | ||
ec88d1ea | 1837 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 1838 | |
fcd8b266 | 1839 | /* A mount point was added or changed */ |
e537352b LP |
1840 | |
1841 | switch (mount->state) { | |
1842 | ||
1843 | case MOUNT_DEAD: | |
fdf20a31 | 1844 | case MOUNT_FAILED: |
4b58153d LP |
1845 | |
1846 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1847 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
1848 | (void) unit_acquire_invocation_id(u); |
1849 | mount_cycle_clear(mount); | |
9d2f5178 | 1850 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1851 | break; |
1852 | ||
1853 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1854 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1855 | break; |
1856 | ||
1857 | default: | |
1858 | /* Nothing really changed, but let's | |
1859 | * issue an notification call | |
1860 | * nonetheless, in case somebody is | |
1861 | * waiting for this. (e.g. file system | |
1862 | * ro/rw remounts.) */ | |
1863 | mount_set_state(mount, mount->state); | |
1864 | break; | |
1865 | } | |
394763f6 | 1866 | } |
fcd8b266 | 1867 | |
11222d0f | 1868 | if (mount_is_mounted(mount) && |
394763f6 LP |
1869 | mount->from_proc_self_mountinfo && |
1870 | mount->parameters_proc_self_mountinfo.what) { | |
b6418dc9 | 1871 | /* Track devices currently used */ |
fcd8b266 | 1872 | |
548f6937 | 1873 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
b6418dc9 | 1874 | set_put_strdup(around, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 1875 | log_oom(); |
e537352b LP |
1876 | } |
1877 | ||
1878 | /* Reset the flags for later calls */ | |
ec88d1ea | 1879 | mount->proc_flags = 0; |
e537352b | 1880 | } |
718db961 | 1881 | |
fcd8b266 LP |
1882 | SET_FOREACH(what, gone, i) { |
1883 | if (set_contains(around, what)) | |
1884 | continue; | |
1885 | ||
1886 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1887 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 | 1888 | } |
ec8126d7 ZJS |
1889 | |
1890 | return 0; | |
e537352b LP |
1891 | } |
1892 | ||
fdf20a31 | 1893 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1894 | Mount *m = MOUNT(u); |
1895 | ||
1896 | assert(m); | |
1897 | ||
fdf20a31 | 1898 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1899 | mount_set_state(m, MOUNT_DEAD); |
1900 | ||
9d2f5178 LP |
1901 | m->result = MOUNT_SUCCESS; |
1902 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1903 | } |
1904 | ||
718db961 | 1905 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1906 | Mount *m = MOUNT(u); |
1907 | ||
1908 | assert(m); | |
1909 | ||
ee36fed4 | 1910 | return unit_kill_common(u, who, signo, -1, m->control_pid, error); |
8a0867d6 LP |
1911 | } |
1912 | ||
291d565a LP |
1913 | static int mount_control_pid(Unit *u) { |
1914 | Mount *m = MOUNT(u); | |
1915 | ||
1916 | assert(m); | |
1917 | ||
1918 | return m->control_pid; | |
1919 | } | |
1920 | ||
a16e1123 LP |
1921 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1922 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1923 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1924 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1925 | }; | |
1926 | ||
1927 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1928 | ||
9d2f5178 LP |
1929 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1930 | [MOUNT_SUCCESS] = "success", | |
1931 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1932 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1933 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1934 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1935 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1936 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1937 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1938 | }; |
1939 | ||
1940 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1941 | ||
87f0e418 | 1942 | const UnitVTable mount_vtable = { |
7d17cfbc | 1943 | .object_size = sizeof(Mount), |
718db961 LP |
1944 | .exec_context_offset = offsetof(Mount, exec_context), |
1945 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1946 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1947 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1948 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1949 | |
f975e971 LP |
1950 | .sections = |
1951 | "Unit\0" | |
1952 | "Mount\0" | |
1953 | "Install\0", | |
4ad49000 | 1954 | .private_section = "Mount", |
71645aca | 1955 | |
e537352b LP |
1956 | .init = mount_init, |
1957 | .load = mount_load, | |
034c6ed7 | 1958 | .done = mount_done, |
e537352b | 1959 | |
f50e0a01 LP |
1960 | .coldplug = mount_coldplug, |
1961 | ||
034c6ed7 | 1962 | .dump = mount_dump, |
5cb5a6ff | 1963 | |
e537352b LP |
1964 | .start = mount_start, |
1965 | .stop = mount_stop, | |
1966 | .reload = mount_reload, | |
1967 | ||
8a0867d6 LP |
1968 | .kill = mount_kill, |
1969 | ||
a16e1123 LP |
1970 | .serialize = mount_serialize, |
1971 | .deserialize_item = mount_deserialize_item, | |
1972 | ||
f50e0a01 | 1973 | .active_state = mount_active_state, |
10a94420 | 1974 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1975 | |
f2f725e5 | 1976 | .may_gc = mount_may_gc, |
701cc384 | 1977 | |
e537352b | 1978 | .sigchld_event = mount_sigchld_event, |
e537352b | 1979 | |
fdf20a31 | 1980 | .reset_failed = mount_reset_failed, |
291d565a LP |
1981 | |
1982 | .control_pid = mount_control_pid, | |
5632e374 | 1983 | |
718db961 | 1984 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1985 | .bus_set_property = bus_mount_set_property, |
1986 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1987 | |
68db7a3b ZJS |
1988 | .get_timeout = mount_get_timeout, |
1989 | ||
0e252f6b TG |
1990 | .can_transient = true, |
1991 | ||
04eb582a | 1992 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 1993 | .enumerate = mount_enumerate, |
c6918296 MS |
1994 | .shutdown = mount_shutdown, |
1995 | ||
1996 | .status_message_formats = { | |
1997 | .starting_stopping = { | |
1998 | [0] = "Mounting %s...", | |
1999 | [1] = "Unmounting %s...", | |
2000 | }, | |
2001 | .finished_start_job = { | |
2002 | [JOB_DONE] = "Mounted %s.", | |
2003 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2004 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2005 | }, | |
2006 | .finished_stop_job = { | |
2007 | [JOB_DONE] = "Unmounted %s.", | |
2008 | [JOB_FAILED] = "Failed unmounting %s.", | |
2009 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2010 | }, | |
2011 | }, | |
5cb5a6ff | 2012 | }; |