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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 | |
227b8a76 MO |
8 | #include <libmount.h> |
9 | ||
20ad4cfd | 10 | #include "sd-messages.h" |
4f5dd394 | 11 | |
b5efdb8a | 12 | #include "alloc-util.h" |
4139c1b2 | 13 | #include "dbus-mount.h" |
6fcbec6f | 14 | #include "dbus-unit.h" |
57b7a260 | 15 | #include "device.h" |
4f5dd394 | 16 | #include "escape.h" |
9a57c629 | 17 | #include "exit-status.h" |
f97b34a6 | 18 | #include "format-util.h" |
4f5dd394 LP |
19 | #include "fstab-util.h" |
20 | #include "log.h" | |
21 | #include "manager.h" | |
22 | #include "mkdir.h" | |
23 | #include "mount-setup.h" | |
24 | #include "mount.h" | |
049af8ad | 25 | #include "mountpoint-util.h" |
6bedfcbb | 26 | #include "parse-util.h" |
4f5dd394 | 27 | #include "path-util.h" |
7b3e062c | 28 | #include "process-util.h" |
d68c645b | 29 | #include "serialize.h" |
4f5dd394 | 30 | #include "special.h" |
8b43440b | 31 | #include "string-table.h" |
b5efdb8a | 32 | #include "string-util.h" |
4f5dd394 LP |
33 | #include "strv.h" |
34 | #include "unit-name.h" | |
35 | #include "unit.h" | |
5cb5a6ff | 36 | |
7d54a03a LP |
37 | #define RETRY_UMOUNT_MAX 32 |
38 | ||
4e920142 ZJS |
39 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
40 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
41 | ||
f50e0a01 LP |
42 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
43 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
44 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 45 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 46 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 47 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 48 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
49 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
50 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
51 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
52 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 53 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 54 | }; |
5cb5a6ff | 55 | |
718db961 LP |
56 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
57 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
58 | ||
c634f3d2 LP |
59 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
60 | return IN_SET(state, | |
61 | MOUNT_MOUNTING, | |
62 | MOUNT_MOUNTING_DONE, | |
63 | MOUNT_REMOUNTING, | |
64 | MOUNT_REMOUNTING_SIGTERM, | |
65 | MOUNT_REMOUNTING_SIGKILL, | |
66 | MOUNT_UNMOUNTING, | |
67 | MOUNT_UNMOUNTING_SIGTERM, | |
68 | MOUNT_UNMOUNTING_SIGKILL); | |
69 | } | |
70 | ||
affc3d83 | 71 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 72 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
73 | return true; |
74 | ||
affc3d83 | 75 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
76 | return true; |
77 | ||
78 | return false; | |
79 | } | |
80 | ||
e6a7b9f4 | 81 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
82 | assert(p); |
83 | ||
84 | return mount_needs_network(p->options, p->fstype); | |
85 | } | |
86 | ||
d3bd0986 MK |
87 | static bool mount_is_loop(const MountParameters *p) { |
88 | assert(p); | |
89 | ||
90 | if (fstab_test_option(p->options, "loop\0")) | |
91 | return true; | |
92 | ||
93 | return false; | |
94 | } | |
95 | ||
e6a7b9f4 | 96 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
97 | assert(p); |
98 | ||
d15d0333 | 99 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
100 | return true; |
101 | ||
d15d0333 | 102 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
103 | return true; |
104 | ||
105 | return false; | |
106 | } | |
107 | ||
e6a7b9f4 | 108 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
109 | assert(p); |
110 | ||
d15d0333 | 111 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
112 | } |
113 | ||
2b14df4a FB |
114 | static bool mount_is_automount(const MountParameters *p) { |
115 | assert(p); | |
116 | ||
117 | return fstab_test_option(p->options, | |
118 | "comment=systemd.automount\0" | |
119 | "x-systemd.automount\0"); | |
120 | } | |
121 | ||
ebc8968b FB |
122 | static bool mount_is_bound_to_device(const Mount *m) { |
123 | const MountParameters *p; | |
124 | ||
125 | if (m->from_fragment) | |
126 | return true; | |
127 | ||
128 | p = &m->parameters_proc_self_mountinfo; | |
129 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
130 | } | |
131 | ||
e6a7b9f4 | 132 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
133 | assert(p); |
134 | ||
11041c84 | 135 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 136 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 137 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
138 | return false; |
139 | ||
140 | if (mount_is_bind(p)) | |
141 | return false; | |
142 | ||
d15d0333 ZJS |
143 | return fstab_test_option(p->options, |
144 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
145 | } |
146 | ||
a16e1123 LP |
147 | static void mount_init(Unit *u) { |
148 | Mount *m = MOUNT(u); | |
5cb5a6ff | 149 | |
a16e1123 | 150 | assert(u); |
ac155bb8 | 151 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 152 | |
1f19a534 | 153 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
154 | |
155 | m->exec_context.std_output = u->manager->default_std_output; | |
156 | m->exec_context.std_error = u->manager->default_std_error; | |
157 | ||
3e5235b0 LP |
158 | m->directory_mode = 0755; |
159 | ||
f00929ad DJL |
160 | /* We need to make sure that /usr/bin/mount is always called |
161 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
162 | * side doesn't send us another mount request while we are |
163 | * already trying to comply its last one. */ | |
74922904 | 164 | m->exec_context.same_pgrp = true; |
8d567588 | 165 | |
a16e1123 | 166 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 167 | |
5bcb0f2b | 168 | u->ignore_on_isolate = true; |
8d567588 LP |
169 | } |
170 | ||
36c16a7c | 171 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
172 | int r; |
173 | ||
174 | assert(m); | |
175 | ||
718db961 | 176 | if (m->timer_event_source) { |
36c16a7c | 177 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
178 | if (r < 0) |
179 | return r; | |
180 | ||
181 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
182 | } | |
183 | ||
36c16a7c LP |
184 | if (usec == USEC_INFINITY) |
185 | return 0; | |
186 | ||
7dfbe2e3 | 187 | r = sd_event_add_time( |
6a0f1f6d LP |
188 | UNIT(m)->manager->event, |
189 | &m->timer_event_source, | |
190 | CLOCK_MONOTONIC, | |
36c16a7c | 191 | usec, 0, |
6a0f1f6d | 192 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
193 | if (r < 0) |
194 | return r; | |
195 | ||
196 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
197 | ||
198 | return 0; | |
718db961 LP |
199 | } |
200 | ||
a16e1123 | 201 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
202 | assert(m); |
203 | ||
204 | if (m->control_pid <= 0) | |
205 | return; | |
206 | ||
207 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
208 | m->control_pid = 0; | |
209 | } | |
210 | ||
e537352b LP |
211 | static void mount_parameters_done(MountParameters *p) { |
212 | assert(p); | |
213 | ||
214 | free(p->what); | |
215 | free(p->options); | |
216 | free(p->fstype); | |
217 | ||
218 | p->what = p->options = p->fstype = NULL; | |
219 | } | |
220 | ||
87f0e418 | 221 | static void mount_done(Unit *u) { |
ef734fd6 | 222 | Mount *m = MOUNT(u); |
034c6ed7 | 223 | |
ef734fd6 | 224 | assert(m); |
034c6ed7 | 225 | |
a1e58e8e | 226 | m->where = mfree(m->where); |
f50e0a01 | 227 | |
e537352b LP |
228 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
229 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 230 | |
e8a565cb | 231 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
232 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
233 | m->control_command = NULL; | |
f50e0a01 | 234 | |
29206d46 LP |
235 | dynamic_creds_unref(&m->dynamic_creds); |
236 | ||
a16e1123 | 237 | mount_unwatch_control_pid(m); |
f50e0a01 | 238 | |
718db961 | 239 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
240 | } |
241 | ||
44a6b1b6 | 242 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
243 | assert(m); |
244 | ||
245 | if (m->from_fragment) | |
246 | return &m->parameters_fragment; | |
cb39ed3f LP |
247 | |
248 | return NULL; | |
249 | } | |
250 | ||
44a6b1b6 | 251 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
252 | assert(m); |
253 | ||
254 | if (m->from_proc_self_mountinfo) | |
255 | return &m->parameters_proc_self_mountinfo; | |
256 | ||
6b1dc2bd | 257 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
258 | } |
259 | ||
eef85c4a | 260 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 261 | MountParameters *pm; |
ac155bb8 | 262 | Unit *other; |
a57f7e2c LP |
263 | Iterator i; |
264 | Set *s; | |
b08d03ff LP |
265 | int r; |
266 | ||
6e2ef85b | 267 | assert(m); |
b08d03ff | 268 | |
a57f7e2c | 269 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
270 | _cleanup_free_ char *parent = NULL; |
271 | ||
272 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
273 | |
274 | parent = dirname_malloc(m->where); | |
275 | if (!parent) | |
276 | return -ENOMEM; | |
01f78473 | 277 | |
eef85c4a | 278 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 279 | if (r < 0) |
01f78473 | 280 | return r; |
4f0eedb7 | 281 | } |
01f78473 | 282 | |
eef85c4a LP |
283 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
284 | * or a loop mount) to be available. */ | |
a57f7e2c | 285 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
286 | if (pm && pm->what && |
287 | path_is_absolute(pm->what) && | |
d3bd0986 | 288 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 289 | |
eef85c4a | 290 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 291 | if (r < 0) |
6e2ef85b | 292 | return r; |
4f0eedb7 | 293 | } |
b08d03ff | 294 | |
eef85c4a | 295 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
296 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
297 | SET_FOREACH(other, s, i) { | |
b08d03ff | 298 | |
a57f7e2c LP |
299 | if (other->load_state != UNIT_LOADED) |
300 | continue; | |
b08d03ff | 301 | |
a57f7e2c LP |
302 | if (other == UNIT(m)) |
303 | continue; | |
b08d03ff | 304 | |
eef85c4a | 305 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 306 | if (r < 0) |
6e2ef85b | 307 | return r; |
b08d03ff | 308 | |
a57f7e2c LP |
309 | if (UNIT(m)->fragment_path) { |
310 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 311 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
312 | if (r < 0) |
313 | return r; | |
314 | } | |
7c8fa05c LP |
315 | } |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
eef85c4a | 320 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 321 | bool device_wants_mount = false; |
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 | ||
463d0d15 | 351 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
352 | device_wants_mount = true; |
353 | ||
ebc8968b FB |
354 | /* Mount units from /proc/self/mountinfo are not bound to devices |
355 | * by default since they're subject to races when devices are | |
356 | * unplugged. But the user can still force this dep with an | |
357 | * appropriate option (or udev property) so the mount units are | |
358 | * automatically stopped when the device disappears suddenly. */ | |
359 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
360 | ||
eef85c4a LP |
361 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
362 | ||
363 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
364 | if (r < 0) |
365 | return r; | |
9fff8a1f | 366 | |
9fff8a1f | 367 | return 0; |
173a8d04 LP |
368 | } |
369 | ||
eef85c4a LP |
370 | static int mount_add_quota_dependencies(Mount *m) { |
371 | UnitDependencyMask mask; | |
6b1dc2bd | 372 | MountParameters *p; |
eef85c4a | 373 | int r; |
6b1dc2bd LP |
374 | |
375 | assert(m); | |
376 | ||
463d0d15 | 377 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
378 | return 0; |
379 | ||
380 | p = get_mount_parameters_fragment(m); | |
381 | if (!p) | |
382 | return 0; | |
383 | ||
384 | if (!needs_quota(p)) | |
385 | return 0; | |
386 | ||
eef85c4a LP |
387 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
388 | ||
5a724170 | 389 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
390 | if (r < 0) |
391 | return r; | |
392 | ||
5a724170 | 393 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
394 | if (r < 0) |
395 | return r; | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
ad2706db | 400 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 401 | MountParameters *p; |
ad2706db | 402 | assert(m); |
88ac30a1 | 403 | |
ad2706db LP |
404 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
405 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
406 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
407 | ||
408 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
409 | return true; | |
410 | ||
411 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
412 | "/", | |
413 | "/usr")) | |
414 | return true; | |
88ac30a1 | 415 | |
ad2706db LP |
416 | if (PATH_STARTSWITH_SET(m->where, |
417 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
418 | "/proc", /* All of this is API VFS */ | |
419 | "/sys", /* … dito … */ | |
420 | "/dev")) /* … dito … */ | |
421 | return true; | |
422 | ||
423 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 424 | p = get_mount_parameters(m); |
ad2706db LP |
425 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
426 | return true; | |
88ac30a1 | 427 | |
ad2706db | 428 | return false; |
88ac30a1 TG |
429 | } |
430 | ||
2edd4434 | 431 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
432 | UnitDependencyMask mask; |
433 | int r; | |
9ddc4a26 | 434 | MountParameters *p; |
ea0ec5ce | 435 | const char *after; |
2edd4434 LP |
436 | |
437 | assert(m); | |
438 | ||
4c9ea260 LP |
439 | if (!UNIT(m)->default_dependencies) |
440 | return 0; | |
441 | ||
ad2706db LP |
442 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
443 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
444 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
445 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 446 | return 0; |
2edd4434 | 447 | |
874d3404 LP |
448 | p = get_mount_parameters(m); |
449 | if (!p) | |
6b1dc2bd LP |
450 | return 0; |
451 | ||
eef85c4a LP |
452 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
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; | |
477 | } else | |
478 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
479 | ||
35d8c19a | 480 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
481 | if (r < 0) |
482 | return r; | |
e8d2f6cd | 483 | |
5a724170 | 484 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
485 | if (r < 0) |
486 | return r; | |
2edd4434 | 487 | |
3e3852b3 | 488 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 489 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 490 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
491 | if (r < 0) |
492 | return r; | |
493 | } | |
494 | ||
2edd4434 LP |
495 | return 0; |
496 | } | |
497 | ||
8d567588 | 498 | static int mount_verify(Mount *m) { |
a57f7e2c | 499 | _cleanup_free_ char *e = NULL; |
b294b79f | 500 | MountParameters *p; |
7410616c | 501 | int r; |
a57f7e2c | 502 | |
8d567588 LP |
503 | assert(m); |
504 | ||
1124fe6f | 505 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
506 | return 0; |
507 | ||
1df96fcb | 508 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
509 | return -ENOENT; |
510 | ||
7410616c LP |
511 | r = unit_name_from_path(m->where, ".mount", &e); |
512 | if (r < 0) | |
f2341e0a | 513 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 514 | |
7410616c | 515 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 516 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 517 | return -ENOEXEC; |
8d567588 LP |
518 | } |
519 | ||
33ff02c9 | 520 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 521 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 522 | return -ENOEXEC; |
33ff02c9 LP |
523 | } |
524 | ||
b294b79f MO |
525 | p = get_mount_parameters_fragment(m); |
526 | if (p && !p->what) { | |
f2341e0a | 527 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 528 | return -ENOEXEC; |
4e85aff4 LP |
529 | } |
530 | ||
4819ff03 | 531 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 532 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 533 | return -ENOEXEC; |
4d0e5dbd LP |
534 | } |
535 | ||
8d567588 LP |
536 | return 0; |
537 | } | |
538 | ||
1a4ac875 MS |
539 | static int mount_add_extras(Mount *m) { |
540 | Unit *u = UNIT(m); | |
e537352b LP |
541 | int r; |
542 | ||
e821075a LP |
543 | assert(m); |
544 | ||
545 | if (u->fragment_path) | |
1a4ac875 | 546 | m->from_fragment = true; |
e537352b | 547 | |
1a4ac875 | 548 | if (!m->where) { |
7410616c LP |
549 | r = unit_name_to_path(u->id, &m->where); |
550 | if (r < 0) | |
551 | return r; | |
1a4ac875 | 552 | } |
a16e1123 | 553 | |
858d36c1 | 554 | path_simplify(m->where, false); |
e537352b | 555 | |
e821075a | 556 | if (!u->description) { |
1a4ac875 MS |
557 | r = unit_set_description(u, m->where); |
558 | if (r < 0) | |
173a8d04 | 559 | return r; |
1a4ac875 | 560 | } |
6e2ef85b | 561 | |
eef85c4a | 562 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
563 | if (r < 0) |
564 | return r; | |
6e2ef85b | 565 | |
eef85c4a | 566 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
567 | if (r < 0) |
568 | return r; | |
6e2ef85b | 569 | |
eef85c4a | 570 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
571 | if (r < 0) |
572 | return r; | |
e537352b | 573 | |
598459ce LP |
574 | r = unit_patch_contexts(u); |
575 | if (r < 0) | |
576 | return r; | |
4e67ddd6 | 577 | |
598459ce | 578 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
579 | if (r < 0) |
580 | return r; | |
581 | ||
d79200e2 | 582 | r = unit_set_default_slice(u); |
1a4ac875 MS |
583 | if (r < 0) |
584 | return r; | |
585 | ||
4c9ea260 LP |
586 | r = mount_add_default_dependencies(m); |
587 | if (r < 0) | |
588 | return r; | |
598459ce | 589 | |
1a4ac875 MS |
590 | return 0; |
591 | } | |
592 | ||
11222d0f LP |
593 | static int mount_load_root_mount(Unit *u) { |
594 | assert(u); | |
595 | ||
596 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
597 | return 0; | |
598 | ||
599 | u->perpetual = true; | |
600 | u->default_dependencies = false; | |
601 | ||
602 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
603 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
604 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
605 | ||
606 | if (!u->description) | |
607 | u->description = strdup("Root Mount"); | |
608 | ||
609 | return 1; | |
610 | } | |
611 | ||
1a4ac875 MS |
612 | static int mount_load(Unit *u) { |
613 | Mount *m = MOUNT(u); | |
614 | int r; | |
615 | ||
616 | assert(u); | |
617 | assert(u->load_state == UNIT_STUB); | |
618 | ||
11222d0f LP |
619 | r = mount_load_root_mount(u); |
620 | if (r < 0) | |
621 | return r; | |
622 | ||
623 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
624 | r = unit_load_fragment_and_dropin_optional(u); |
625 | else | |
626 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
627 | if (r < 0) |
628 | return r; | |
155da457 | 629 | |
1a4ac875 MS |
630 | /* This is a new unit? Then let's add in some extras */ |
631 | if (u->load_state == UNIT_LOADED) { | |
632 | r = mount_add_extras(m); | |
633 | if (r < 0) | |
634 | return r; | |
e537352b LP |
635 | } |
636 | ||
8d567588 | 637 | return mount_verify(m); |
e537352b LP |
638 | } |
639 | ||
640 | static void mount_set_state(Mount *m, MountState state) { | |
641 | MountState old_state; | |
642 | assert(m); | |
643 | ||
6fcbec6f LP |
644 | if (m->state != state) |
645 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
646 | ||
e537352b LP |
647 | old_state = m->state; |
648 | m->state = state; | |
649 | ||
c634f3d2 | 650 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 651 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 652 | mount_unwatch_control_pid(m); |
e537352b | 653 | m->control_command = NULL; |
a16e1123 | 654 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
655 | } |
656 | ||
657 | if (state != old_state) | |
f2341e0a | 658 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 659 | |
2ad2e41a LP |
660 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
661 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
662 | } |
663 | ||
be847e82 | 664 | static int mount_coldplug(Unit *u) { |
e537352b | 665 | Mount *m = MOUNT(u); |
a16e1123 LP |
666 | MountState new_state = MOUNT_DEAD; |
667 | int r; | |
e537352b LP |
668 | |
669 | assert(m); | |
670 | assert(m->state == MOUNT_DEAD); | |
671 | ||
a16e1123 LP |
672 | if (m->deserialized_state != m->state) |
673 | new_state = m->deserialized_state; | |
674 | else if (m->from_proc_self_mountinfo) | |
675 | new_state = MOUNT_MOUNTED; | |
e537352b | 676 | |
5bcb0f2b LP |
677 | if (new_state == m->state) |
678 | return 0; | |
e537352b | 679 | |
c386f588 LP |
680 | if (m->control_pid > 0 && |
681 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 682 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
683 | |
684 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
685 | if (r < 0) | |
686 | return r; | |
e537352b | 687 | |
36c16a7c | 688 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
689 | if (r < 0) |
690 | return r; | |
a16e1123 | 691 | } |
e537352b | 692 | |
e8a565cb | 693 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 694 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
695 | (void) unit_setup_exec_runtime(u); |
696 | } | |
29206d46 | 697 | |
5bcb0f2b | 698 | mount_set_state(m, new_state); |
e537352b | 699 | return 0; |
e537352b LP |
700 | } |
701 | ||
702 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 703 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
704 | Mount *m = MOUNT(u); |
705 | MountParameters *p; | |
706 | ||
707 | assert(m); | |
708 | assert(f); | |
709 | ||
cb39ed3f | 710 | p = get_mount_parameters(m); |
e537352b LP |
711 | |
712 | fprintf(f, | |
713 | "%sMount State: %s\n" | |
81a5c6d0 | 714 | "%sResult: %s\n" |
e537352b LP |
715 | "%sWhere: %s\n" |
716 | "%sWhat: %s\n" | |
717 | "%sFile System Type: %s\n" | |
718 | "%sOptions: %s\n" | |
e537352b LP |
719 | "%sFrom /proc/self/mountinfo: %s\n" |
720 | "%sFrom fragment: %s\n" | |
ad2706db | 721 | "%sExtrinsic: %s\n" |
e520950a | 722 | "%sDirectoryMode: %04o\n" |
49915de2 | 723 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 724 | "%sLazyUnmount: %s\n" |
91899792 YW |
725 | "%sForceUnmount: %s\n" |
726 | "%sTimoutSec: %s\n", | |
a16e1123 | 727 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 728 | prefix, mount_result_to_string(m->result), |
e537352b | 729 | prefix, m->where, |
1e4fc9b1 HH |
730 | prefix, p ? strna(p->what) : "n/a", |
731 | prefix, p ? strna(p->fstype) : "n/a", | |
732 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
733 | prefix, yes_no(m->from_proc_self_mountinfo), |
734 | prefix, yes_no(m->from_fragment), | |
ad2706db | 735 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 736 | prefix, m->directory_mode, |
49915de2 | 737 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 738 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
739 | prefix, yes_no(m->force_unmount), |
740 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
741 | |
742 | if (m->control_pid > 0) | |
743 | fprintf(f, | |
ccd06097 ZJS |
744 | "%sControl PID: "PID_FMT"\n", |
745 | prefix, m->control_pid); | |
e537352b LP |
746 | |
747 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 748 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 749 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
750 | } |
751 | ||
a16e1123 | 752 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 753 | |
b9c04eaf | 754 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
755 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
756 | .stdin_fd = -1, | |
757 | .stdout_fd = -1, | |
758 | .stderr_fd = -1, | |
759 | .exec_fd = -1, | |
9fa95f85 | 760 | }; |
3c7416b6 LP |
761 | pid_t pid; |
762 | int r; | |
a16e1123 LP |
763 | |
764 | assert(m); | |
765 | assert(c); | |
766 | assert(_pid); | |
767 | ||
3c7416b6 | 768 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
769 | if (r < 0) |
770 | return r; | |
771 | ||
36c16a7c | 772 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 773 | if (r < 0) |
36c16a7c | 774 | return r; |
a16e1123 | 775 | |
1ad6e8b3 LP |
776 | r = unit_set_exec_params(UNIT(m), &exec_params); |
777 | if (r < 0) | |
778 | return r; | |
9fa95f85 | 779 | |
f2341e0a LP |
780 | r = exec_spawn(UNIT(m), |
781 | c, | |
4ad49000 | 782 | &m->exec_context, |
9fa95f85 | 783 | &exec_params, |
613b411c | 784 | m->exec_runtime, |
29206d46 | 785 | &m->dynamic_creds, |
4ad49000 LP |
786 | &pid); |
787 | if (r < 0) | |
36c16a7c | 788 | return r; |
a16e1123 | 789 | |
4ad49000 LP |
790 | r = unit_watch_pid(UNIT(m), pid); |
791 | if (r < 0) | |
a16e1123 | 792 | /* FIXME: we need to do something here */ |
36c16a7c | 793 | return r; |
a16e1123 LP |
794 | |
795 | *_pid = pid; | |
796 | ||
797 | return 0; | |
a16e1123 LP |
798 | } |
799 | ||
9d2f5178 | 800 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
801 | assert(m); |
802 | ||
a0fef983 | 803 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 804 | m->result = f; |
e537352b | 805 | |
aac99f30 | 806 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
29206d46 LP |
807 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
808 | ||
e8a565cb | 809 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 810 | |
3536f49e | 811 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 812 | |
00d9ef85 LP |
813 | unit_unref_uid_gid(UNIT(m), true); |
814 | ||
29206d46 | 815 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
816 | } |
817 | ||
9d2f5178 | 818 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
819 | assert(m); |
820 | ||
a0fef983 | 821 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 822 | m->result = f; |
80876c20 LP |
823 | |
824 | mount_set_state(m, MOUNT_MOUNTED); | |
825 | } | |
826 | ||
22af0e58 LP |
827 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
828 | assert(m); | |
829 | ||
830 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
831 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
832 | * ultimately we just mirror the kernel's internal state on this. */ | |
833 | ||
834 | if (m->from_proc_self_mountinfo) | |
835 | mount_enter_mounted(m, f); | |
836 | else | |
837 | mount_enter_dead(m, f); | |
838 | } | |
839 | ||
840 | static int state_to_kill_operation(MountState state) { | |
841 | switch (state) { | |
842 | ||
843 | case MOUNT_REMOUNTING_SIGTERM: | |
844 | case MOUNT_UNMOUNTING_SIGTERM: | |
845 | return KILL_TERMINATE; | |
846 | ||
847 | case MOUNT_REMOUNTING_SIGKILL: | |
848 | case MOUNT_UNMOUNTING_SIGKILL: | |
849 | return KILL_KILL; | |
850 | ||
851 | default: | |
852 | return _KILL_OPERATION_INVALID; | |
853 | } | |
854 | } | |
855 | ||
9d2f5178 | 856 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
857 | int r; |
858 | ||
859 | assert(m); | |
860 | ||
a0fef983 | 861 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 862 | m->result = f; |
e537352b | 863 | |
cd2086fe LP |
864 | r = unit_kill_context( |
865 | UNIT(m), | |
866 | &m->kill_context, | |
22af0e58 | 867 | state_to_kill_operation(state), |
cd2086fe LP |
868 | -1, |
869 | m->control_pid, | |
870 | false); | |
871 | if (r < 0) | |
872 | goto fail; | |
e537352b | 873 | |
cd2086fe | 874 | if (r > 0) { |
36c16a7c | 875 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 876 | if (r < 0) |
80876c20 | 877 | goto fail; |
e537352b | 878 | |
80876c20 | 879 | mount_set_state(m, state); |
22af0e58 | 880 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 881 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 882 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 883 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 884 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 885 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 886 | else |
22af0e58 | 887 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
888 | |
889 | return; | |
890 | ||
891 | fail: | |
f2341e0a | 892 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 893 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
894 | } |
895 | ||
9d2f5178 | 896 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
897 | int r; |
898 | ||
899 | assert(m); | |
900 | ||
7d54a03a LP |
901 | /* Start counting our attempts */ |
902 | if (!IN_SET(m->state, | |
903 | MOUNT_UNMOUNTING, | |
904 | MOUNT_UNMOUNTING_SIGTERM, | |
905 | MOUNT_UNMOUNTING_SIGKILL)) | |
906 | m->n_retry_umount = 0; | |
907 | ||
a16e1123 LP |
908 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
909 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 910 | |
83897d54 | 911 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
912 | if (r >= 0 && m->lazy_unmount) |
913 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
914 | if (r >= 0 && m->force_unmount) |
915 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 916 | if (r < 0) |
e537352b LP |
917 | goto fail; |
918 | ||
a16e1123 | 919 | mount_unwatch_control_pid(m); |
5e94833f | 920 | |
7d54a03a LP |
921 | r = mount_spawn(m, m->control_command, &m->control_pid); |
922 | if (r < 0) | |
e537352b LP |
923 | goto fail; |
924 | ||
925 | mount_set_state(m, MOUNT_UNMOUNTING); | |
926 | ||
927 | return; | |
928 | ||
929 | fail: | |
f2341e0a | 930 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 931 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
932 | } |
933 | ||
8d567588 | 934 | static void mount_enter_mounting(Mount *m) { |
e537352b | 935 | int r; |
cb39ed3f | 936 | MountParameters *p; |
e537352b LP |
937 | |
938 | assert(m); | |
939 | ||
25cd4964 | 940 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
941 | if (r < 0) |
942 | goto fail; | |
943 | ||
944 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 945 | |
f2341e0a | 946 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 947 | |
a4634b21 LP |
948 | unit_warn_leftover_processes(UNIT(m)); |
949 | ||
950 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
951 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
952 | ||
cb39ed3f | 953 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 954 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 955 | if (p && mount_is_bind(p)) |
f2341e0a | 956 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 957 | |
b294b79f | 958 | if (p) { |
17a1c597 ZJS |
959 | _cleanup_free_ char *opts = NULL; |
960 | ||
b294b79f | 961 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
962 | if (r < 0) |
963 | goto fail; | |
964 | ||
b294b79f | 965 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
966 | if (r >= 0 && m->sloppy_options) |
967 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
968 | if (r >= 0 && p->fstype) |
969 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 970 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 971 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 972 | } else |
e537352b | 973 | r = -ENOENT; |
e537352b LP |
974 | if (r < 0) |
975 | goto fail; | |
976 | ||
a16e1123 | 977 | mount_unwatch_control_pid(m); |
5e94833f | 978 | |
257f1d8e LP |
979 | r = mount_spawn(m, m->control_command, &m->control_pid); |
980 | if (r < 0) | |
e537352b LP |
981 | goto fail; |
982 | ||
983 | mount_set_state(m, MOUNT_MOUNTING); | |
984 | ||
985 | return; | |
986 | ||
987 | fail: | |
f2341e0a | 988 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 989 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
990 | } |
991 | ||
850b7410 LP |
992 | static void mount_set_reload_result(Mount *m, MountResult result) { |
993 | assert(m); | |
994 | ||
995 | /* Only store the first error we encounter */ | |
996 | if (m->reload_result != MOUNT_SUCCESS) | |
997 | return; | |
998 | ||
999 | m->reload_result = result; | |
1000 | } | |
1001 | ||
9d2f5178 | 1002 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1003 | int r; |
b294b79f | 1004 | MountParameters *p; |
e537352b LP |
1005 | |
1006 | assert(m); | |
1007 | ||
850b7410 LP |
1008 | /* Reset reload result when we are about to start a new remount operation */ |
1009 | m->reload_result = MOUNT_SUCCESS; | |
1010 | ||
a16e1123 LP |
1011 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1012 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1013 | |
b294b79f MO |
1014 | p = get_mount_parameters_fragment(m); |
1015 | if (p) { | |
e537352b LP |
1016 | const char *o; |
1017 | ||
b294b79f MO |
1018 | if (p->options) |
1019 | o = strjoina("remount,", p->options); | |
718db961 | 1020 | else |
e537352b LP |
1021 | o = "remount"; |
1022 | ||
f00929ad | 1023 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1024 | p->what, m->where, |
e86b3761 | 1025 | "-o", o, NULL); |
e86b3761 ZJS |
1026 | if (r >= 0 && m->sloppy_options) |
1027 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1028 | if (r >= 0 && p->fstype) |
1029 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1030 | } else |
e537352b | 1031 | r = -ENOENT; |
60b912f6 | 1032 | if (r < 0) |
e537352b | 1033 | goto fail; |
e537352b | 1034 | |
a16e1123 | 1035 | mount_unwatch_control_pid(m); |
5e94833f | 1036 | |
718db961 LP |
1037 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1038 | if (r < 0) | |
e537352b LP |
1039 | goto fail; |
1040 | ||
1041 | mount_set_state(m, MOUNT_REMOUNTING); | |
1042 | ||
1043 | return; | |
1044 | ||
1045 | fail: | |
f2341e0a | 1046 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1047 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1048 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1049 | } |
1050 | ||
1051 | static int mount_start(Unit *u) { | |
1052 | Mount *m = MOUNT(u); | |
07299350 | 1053 | int r; |
e537352b LP |
1054 | |
1055 | assert(m); | |
1056 | ||
1057 | /* We cannot fulfill this request right now, try again later | |
1058 | * please! */ | |
f2aed307 LP |
1059 | if (IN_SET(m->state, |
1060 | MOUNT_UNMOUNTING, | |
1061 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1062 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1063 | return -EAGAIN; |
1064 | ||
1065 | /* Already on it! */ | |
60b912f6 | 1066 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1067 | return 0; |
1068 | ||
f2aed307 | 1069 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1070 | |
07299350 LP |
1071 | r = unit_start_limit_test(u); |
1072 | if (r < 0) { | |
1073 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1074 | return r; | |
1075 | } | |
1076 | ||
4b58153d LP |
1077 | r = unit_acquire_invocation_id(u); |
1078 | if (r < 0) | |
1079 | return r; | |
1080 | ||
9d2f5178 LP |
1081 | m->result = MOUNT_SUCCESS; |
1082 | m->reload_result = MOUNT_SUCCESS; | |
6a1d4d9f | 1083 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
3c7416b6 LP |
1084 | |
1085 | u->reset_accounting = true; | |
9d2f5178 | 1086 | |
8d567588 | 1087 | mount_enter_mounting(m); |
82a2b6bb | 1088 | return 1; |
e537352b LP |
1089 | } |
1090 | ||
1091 | static int mount_stop(Unit *u) { | |
1092 | Mount *m = MOUNT(u); | |
1093 | ||
1094 | assert(m); | |
1095 | ||
22af0e58 LP |
1096 | switch (m->state) { |
1097 | ||
1098 | case MOUNT_UNMOUNTING: | |
1099 | case MOUNT_UNMOUNTING_SIGKILL: | |
1100 | case MOUNT_UNMOUNTING_SIGTERM: | |
1101 | /* Already on it */ | |
e537352b LP |
1102 | return 0; |
1103 | ||
22af0e58 LP |
1104 | case MOUNT_MOUNTING: |
1105 | case MOUNT_MOUNTING_DONE: | |
1106 | case MOUNT_REMOUNTING: | |
1107 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1108 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1109 | return 0; | |
e537352b | 1110 | |
22af0e58 LP |
1111 | case MOUNT_REMOUNTING_SIGTERM: |
1112 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1113 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1114 | return 0; | |
1115 | ||
1116 | case MOUNT_REMOUNTING_SIGKILL: | |
1117 | /* as above */ | |
1118 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1119 | return 0; | |
1120 | ||
1121 | case MOUNT_MOUNTED: | |
1122 | mount_enter_unmounting(m); | |
1123 | return 1; | |
1124 | ||
1125 | default: | |
1126 | assert_not_reached("Unexpected state."); | |
1127 | } | |
e537352b LP |
1128 | } |
1129 | ||
1130 | static int mount_reload(Unit *u) { | |
1131 | Mount *m = MOUNT(u); | |
1132 | ||
1133 | assert(m); | |
e537352b LP |
1134 | assert(m->state == MOUNT_MOUNTED); |
1135 | ||
9d2f5178 | 1136 | mount_enter_remounting(m); |
22af0e58 | 1137 | |
2d018ae2 | 1138 | return 1; |
e537352b LP |
1139 | } |
1140 | ||
a16e1123 LP |
1141 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1142 | Mount *m = MOUNT(u); | |
1143 | ||
1144 | assert(m); | |
1145 | assert(f); | |
1146 | assert(fds); | |
1147 | ||
d68c645b LP |
1148 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1149 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1150 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1151 | |
1152 | if (m->control_pid > 0) | |
d68c645b | 1153 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1154 | |
1155 | if (m->control_command_id >= 0) | |
d68c645b | 1156 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1157 | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1162 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1163 | |
1164 | assert(u); | |
1165 | assert(key); | |
1166 | assert(value); | |
1167 | assert(fds); | |
1168 | ||
1169 | if (streq(key, "state")) { | |
1170 | MountState state; | |
1171 | ||
1172 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1173 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1174 | else |
1175 | m->deserialized_state = state; | |
9d2f5178 LP |
1176 | } else if (streq(key, "result")) { |
1177 | MountResult f; | |
a16e1123 | 1178 | |
9d2f5178 LP |
1179 | f = mount_result_from_string(value); |
1180 | if (f < 0) | |
f2341e0a | 1181 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1182 | else if (f != MOUNT_SUCCESS) |
1183 | m->result = f; | |
1184 | ||
1185 | } else if (streq(key, "reload-result")) { | |
1186 | MountResult f; | |
1187 | ||
1188 | f = mount_result_from_string(value); | |
1189 | if (f < 0) | |
f2341e0a | 1190 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1191 | else if (f != MOUNT_SUCCESS) |
1192 | m->reload_result = f; | |
a16e1123 LP |
1193 | |
1194 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1195 | pid_t pid; |
a16e1123 | 1196 | |
e364ad06 | 1197 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1198 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1199 | else |
5925dd3c | 1200 | m->control_pid = pid; |
a16e1123 LP |
1201 | } else if (streq(key, "control-command")) { |
1202 | MountExecCommand id; | |
1203 | ||
f2341e0a LP |
1204 | id = mount_exec_command_from_string(value); |
1205 | if (id < 0) | |
1206 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1207 | else { |
1208 | m->control_command_id = id; | |
1209 | m->control_command = m->exec_command + id; | |
1210 | } | |
a16e1123 | 1211 | } else |
f2341e0a | 1212 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1213 | |
1214 | return 0; | |
1215 | } | |
1216 | ||
44a6b1b6 | 1217 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1218 | assert(u); |
1219 | ||
1220 | return state_translation_table[MOUNT(u)->state]; | |
1221 | } | |
1222 | ||
44a6b1b6 | 1223 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1224 | assert(u); |
1225 | ||
a16e1123 | 1226 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1227 | } |
1228 | ||
f2f725e5 | 1229 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1230 | Mount *m = MOUNT(u); |
1231 | ||
1232 | assert(m); | |
1233 | ||
f2f725e5 ZJS |
1234 | if (m->from_proc_self_mountinfo) |
1235 | return false; | |
1236 | ||
1237 | return true; | |
701cc384 LP |
1238 | } |
1239 | ||
e537352b LP |
1240 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1241 | Mount *m = MOUNT(u); | |
9d2f5178 | 1242 | MountResult f; |
e537352b LP |
1243 | |
1244 | assert(m); | |
1245 | assert(pid >= 0); | |
1246 | ||
8c47c732 LP |
1247 | if (pid != m->control_pid) |
1248 | return; | |
e537352b | 1249 | |
e537352b LP |
1250 | m->control_pid = 0; |
1251 | ||
1f0958f6 | 1252 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1253 | f = MOUNT_SUCCESS; |
1254 | else if (code == CLD_EXITED) | |
1255 | f = MOUNT_FAILURE_EXIT_CODE; | |
1256 | else if (code == CLD_KILLED) | |
1257 | f = MOUNT_FAILURE_SIGNAL; | |
1258 | else if (code == CLD_DUMPED) | |
1259 | f = MOUNT_FAILURE_CORE_DUMP; | |
1260 | else | |
1261 | assert_not_reached("Unknown code"); | |
1262 | ||
850b7410 LP |
1263 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1264 | mount_set_reload_result(m, f); | |
1265 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1266 | m->result = f; |
8c47c732 | 1267 | |
a16e1123 | 1268 | if (m->control_command) { |
6ea832a2 | 1269 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1270 | |
a16e1123 LP |
1271 | m->control_command = NULL; |
1272 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1273 | } | |
1274 | ||
91bbd9b7 LP |
1275 | unit_log_process_exit( |
1276 | u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1277 | "Mount process", | |
1278 | mount_exec_command_to_string(m->control_command_id), | |
1279 | code, status); | |
e537352b | 1280 | |
006aabbd AJ |
1281 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1282 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1283 | |
1284 | switch (m->state) { | |
1285 | ||
1286 | case MOUNT_MOUNTING: | |
006aabbd | 1287 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1288 | |
006aabbd AJ |
1289 | if (f == MOUNT_SUCCESS) { |
1290 | /* Either /bin/mount has an unexpected definition of success, | |
1291 | * or someone raced us and we lost. */ | |
1292 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1293 | f = MOUNT_FAILURE_PROTOCOL; | |
1294 | } | |
1295 | mount_enter_dead(m, f); | |
1296 | break; | |
1297 | ||
1298 | case MOUNT_MOUNTING_DONE: | |
1299 | mount_enter_mounted(m, f); | |
e537352b LP |
1300 | break; |
1301 | ||
e2f3b44c | 1302 | case MOUNT_REMOUNTING: |
e2f3b44c | 1303 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1304 | case MOUNT_REMOUNTING_SIGKILL: |
1305 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1306 | break; |
1307 | ||
e537352b | 1308 | case MOUNT_UNMOUNTING: |
e537352b | 1309 | |
3cc96856 | 1310 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1311 | |
1312 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1313 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1314 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1315 | |
1316 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1317 | log_unit_debug(u, "Mount still present, trying again."); | |
1318 | m->n_retry_umount++; | |
1319 | mount_enter_unmounting(m); | |
1320 | } else { | |
006aabbd | 1321 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1322 | mount_enter_mounted(m, f); |
1323 | } | |
1324 | } else | |
3cc96856 | 1325 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1326 | |
e537352b | 1327 | break; |
57018361 AJ |
1328 | |
1329 | case MOUNT_UNMOUNTING_SIGKILL: | |
1330 | case MOUNT_UNMOUNTING_SIGTERM: | |
1331 | mount_enter_dead_or_mounted(m, f); | |
1332 | break; | |
e537352b LP |
1333 | |
1334 | default: | |
1335 | assert_not_reached("Uh, control process died at wrong time."); | |
1336 | } | |
c4e2ceae LP |
1337 | |
1338 | /* Notify clients about changed exit status */ | |
1339 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1340 | } |
1341 | ||
718db961 LP |
1342 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1343 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1344 | |
1345 | assert(m); | |
718db961 | 1346 | assert(m->timer_event_source == source); |
e537352b LP |
1347 | |
1348 | switch (m->state) { | |
1349 | ||
1350 | case MOUNT_MOUNTING: | |
1351 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1352 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1353 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1354 | break; |
1355 | ||
1356 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1357 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1358 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1359 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1360 | break; |
1361 | ||
22af0e58 LP |
1362 | case MOUNT_REMOUNTING_SIGTERM: |
1363 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1364 | |
4819ff03 | 1365 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1366 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1367 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1368 | } else { |
22af0e58 LP |
1369 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1370 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1371 | } |
e537352b LP |
1372 | break; |
1373 | ||
22af0e58 LP |
1374 | case MOUNT_REMOUNTING_SIGKILL: |
1375 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1376 | |
22af0e58 LP |
1377 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1378 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1379 | break; | |
1380 | ||
1381 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1382 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1383 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1384 | break; |
1385 | ||
1386 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1387 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1388 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1389 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1390 | } else { |
22af0e58 LP |
1391 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1392 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1393 | } |
e537352b LP |
1394 | break; |
1395 | ||
e537352b | 1396 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1397 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1398 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1399 | break; |
1400 | ||
1401 | default: | |
1402 | assert_not_reached("Timeout at wrong time."); | |
1403 | } | |
718db961 LP |
1404 | |
1405 | return 0; | |
e537352b LP |
1406 | } |
1407 | ||
03b8cfed FB |
1408 | typedef struct { |
1409 | bool is_mounted; | |
1410 | bool just_mounted; | |
1411 | bool just_changed; | |
1412 | } MountSetupFlags; | |
1413 | ||
1414 | static int mount_setup_new_unit( | |
1415 | Unit *u, | |
1416 | const char *what, | |
1417 | const char *where, | |
1418 | const char *options, | |
1419 | const char *fstype, | |
1420 | MountSetupFlags *flags) { | |
1421 | ||
1422 | MountParameters *p; | |
1423 | ||
1424 | assert(u); | |
1425 | assert(flags); | |
1426 | ||
1427 | u->source_path = strdup("/proc/self/mountinfo"); | |
1428 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1429 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1430 | return -ENOMEM; |
1431 | ||
1432 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1433 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1434 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1435 | ||
1436 | p->what = strdup(what); | |
1437 | p->options = strdup(options); | |
1438 | p->fstype = strdup(fstype); | |
1439 | if (!p->what || !p->options || !p->fstype) | |
1440 | return -ENOMEM; | |
1441 | ||
1442 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1443 | const char *target; | |
1444 | int r; | |
1445 | ||
1446 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
35d8c19a | 1447 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1448 | if (r < 0) |
1449 | return r; | |
1450 | ||
35d8c19a | 1451 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1452 | if (r < 0) |
1453 | return r; | |
1454 | } | |
1455 | ||
cfcd4318 | 1456 | unit_add_to_load_queue(u); |
03b8cfed FB |
1457 | flags->is_mounted = true; |
1458 | flags->just_mounted = true; | |
1459 | flags->just_changed = true; | |
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static int mount_setup_existing_unit( | |
1465 | Unit *u, | |
1466 | const char *what, | |
1467 | const char *where, | |
1468 | const char *options, | |
1469 | const char *fstype, | |
1470 | MountSetupFlags *flags) { | |
1471 | ||
1472 | MountParameters *p; | |
1473 | bool load_extras = false; | |
1474 | int r1, r2, r3; | |
1475 | ||
1476 | assert(u); | |
1477 | assert(flags); | |
1478 | ||
1479 | if (!MOUNT(u)->where) { | |
1480 | MOUNT(u)->where = strdup(where); | |
1481 | if (!MOUNT(u)->where) | |
1482 | return -ENOMEM; | |
1483 | } | |
1484 | ||
1485 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1486 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1487 | ||
1488 | r1 = free_and_strdup(&p->what, what); | |
1489 | r2 = free_and_strdup(&p->options, options); | |
1490 | r3 = free_and_strdup(&p->fstype, fstype); | |
1491 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1492 | return -ENOMEM; | |
1493 | ||
1494 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1495 | flags->is_mounted = true; | |
65d36b49 | 1496 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1497 | |
1498 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1499 | ||
1500 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1501 | /* _netdev option may have shown up late, or on a | |
1502 | * remount. Add remote-fs dependencies, even though | |
1503 | * local-fs ones may already be there. | |
1504 | * | |
1505 | * Note: due to a current limitation (we don't track | |
1506 | * in the dependency "Set*" objects who created a | |
1507 | * dependency), we can only add deps, never lose them, | |
1508 | * until the next full daemon-reload. */ | |
35d8c19a | 1509 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1510 | load_extras = true; |
1511 | } | |
1512 | ||
1513 | if (u->load_state == UNIT_NOT_FOUND) { | |
1514 | u->load_state = UNIT_LOADED; | |
1515 | u->load_error = 0; | |
1516 | ||
1517 | /* Load in the extras later on, after we | |
1518 | * finished initialization of the unit */ | |
1519 | ||
1520 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1521 | load_extras = true; | |
1522 | flags->just_changed = true; | |
1523 | } | |
1524 | ||
1525 | if (load_extras) | |
1526 | return mount_add_extras(MOUNT(u)); | |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
628c89cc | 1531 | static int mount_setup_unit( |
e537352b LP |
1532 | Manager *m, |
1533 | const char *what, | |
1534 | const char *where, | |
1535 | const char *options, | |
1536 | const char *fstype, | |
e537352b | 1537 | bool set_flags) { |
057d9ab8 | 1538 | |
03b8cfed FB |
1539 | _cleanup_free_ char *e = NULL; |
1540 | MountSetupFlags flags; | |
057d9ab8 LP |
1541 | Unit *u; |
1542 | int r; | |
b08d03ff | 1543 | |
f50e0a01 | 1544 | assert(m); |
b08d03ff LP |
1545 | assert(what); |
1546 | assert(where); | |
e537352b LP |
1547 | assert(options); |
1548 | assert(fstype); | |
1549 | ||
e537352b LP |
1550 | /* Ignore API mount points. They should never be referenced in |
1551 | * dependencies ever. */ | |
33ff02c9 | 1552 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1553 | return 0; |
b08d03ff | 1554 | |
8d567588 LP |
1555 | if (streq(fstype, "autofs")) |
1556 | return 0; | |
1557 | ||
4e85aff4 LP |
1558 | /* probably some kind of swap, ignore */ |
1559 | if (!is_path(where)) | |
b08d03ff LP |
1560 | return 0; |
1561 | ||
7410616c LP |
1562 | r = unit_name_from_path(where, ".mount", &e); |
1563 | if (r < 0) | |
1564 | return r; | |
b08d03ff | 1565 | |
7d17cfbc MS |
1566 | u = manager_get_unit(m, e); |
1567 | if (!u) { | |
03b8cfed FB |
1568 | /* First time we see this mount point meaning that it's |
1569 | * not been initiated by a mount unit but rather by the | |
1570 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1571 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1572 | if (r < 0) |
1573 | goto fail; | |
1574 | ||
03b8cfed FB |
1575 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1576 | if (r < 0) | |
1577 | unit_free(u); | |
1578 | } else | |
1579 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1580 | |
03b8cfed | 1581 | if (r < 0) |
e537352b | 1582 | goto fail; |
ff5f34d0 | 1583 | |
6b1dc2bd | 1584 | if (set_flags) { |
03b8cfed FB |
1585 | MOUNT(u)->is_mounted = flags.is_mounted; |
1586 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1587 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1588 | } |
1589 | ||
03b8cfed | 1590 | if (flags.just_changed) |
ff5f34d0 | 1591 | unit_add_to_dbus_queue(u); |
c1e1601e | 1592 | |
b08d03ff | 1593 | return 0; |
b08d03ff | 1594 | fail: |
fc95c359 | 1595 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
b08d03ff LP |
1596 | } |
1597 | ||
ef734fd6 | 1598 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1599 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1600 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1601 | int r = 0; |
b08d03ff LP |
1602 | |
1603 | assert(m); | |
1604 | ||
628c89cc | 1605 | t = mnt_new_table(); |
628c89cc | 1606 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1607 | if (!t || !i) |
628c89cc LP |
1608 | return log_oom(); |
1609 | ||
1610 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1611 | if (r < 0) |
628c89cc | 1612 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1613 | |
5cca8def ZJS |
1614 | r = 0; |
1615 | for (;;) { | |
95b862b0 | 1616 | struct libmnt_fs *fs; |
8d3ae2bd | 1617 | const char *device, *path, *options, *fstype; |
527b7a42 | 1618 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1619 | int k; |
b08d03ff | 1620 | |
628c89cc | 1621 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1622 | if (k == 1) |
1623 | break; | |
628c89cc LP |
1624 | if (k < 0) |
1625 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1626 | |
8d3ae2bd CL |
1627 | device = mnt_fs_get_source(fs); |
1628 | path = mnt_fs_get_target(fs); | |
1629 | options = mnt_fs_get_options(fs); | |
1630 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1631 | |
c0a7f8d3 DM |
1632 | if (!device || !path) |
1633 | continue; | |
1634 | ||
527b7a42 | 1635 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1636 | return log_oom(); |
1637 | ||
527b7a42 | 1638 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1639 | return log_oom(); |
b08d03ff | 1640 | |
485ae697 | 1641 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc LP |
1642 | |
1643 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1644 | if (r == 0 && k < 0) |
60b912f6 | 1645 | r = k; |
b08d03ff LP |
1646 | } |
1647 | ||
e537352b LP |
1648 | return r; |
1649 | } | |
1650 | ||
1651 | static void mount_shutdown(Manager *m) { | |
1652 | assert(m); | |
1653 | ||
718db961 LP |
1654 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1655 | ||
d379d442 KZ |
1656 | mnt_unref_monitor(m->mount_monitor); |
1657 | m->mount_monitor = NULL; | |
b08d03ff LP |
1658 | } |
1659 | ||
7a7821c8 | 1660 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1661 | Mount *m = MOUNT(u); |
7a7821c8 | 1662 | usec_t t; |
68db7a3b ZJS |
1663 | int r; |
1664 | ||
1665 | if (!m->timer_event_source) | |
1666 | return 0; | |
1667 | ||
7a7821c8 | 1668 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1669 | if (r < 0) |
1670 | return r; | |
7a7821c8 LP |
1671 | if (t == USEC_INFINITY) |
1672 | return 0; | |
68db7a3b | 1673 | |
7a7821c8 | 1674 | *timeout = t; |
68db7a3b ZJS |
1675 | return 1; |
1676 | } | |
1677 | ||
04eb582a | 1678 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1679 | Unit *u; |
1680 | int r; | |
1681 | ||
1682 | assert(m); | |
1683 | ||
1684 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1685 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1686 | ||
1687 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1688 | if (!u) { | |
a581e45a | 1689 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1690 | if (r < 0) { |
1691 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1692 | return; | |
1693 | } | |
11222d0f LP |
1694 | } |
1695 | ||
1696 | u->perpetual = true; | |
1697 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1698 | ||
1699 | unit_add_to_load_queue(u); | |
1700 | unit_add_to_dbus_queue(u); | |
1701 | } | |
1702 | ||
1703 | static bool mount_is_mounted(Mount *m) { | |
1704 | assert(m); | |
1705 | ||
1706 | return UNIT(m)->perpetual || m->is_mounted; | |
1707 | } | |
1708 | ||
ba64af90 | 1709 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1710 | int r; |
d379d442 | 1711 | |
b08d03ff LP |
1712 | assert(m); |
1713 | ||
8d3ae2bd CL |
1714 | mnt_init_debug(0); |
1715 | ||
d379d442 KZ |
1716 | if (!m->mount_monitor) { |
1717 | int fd; | |
ef734fd6 | 1718 | |
d379d442 KZ |
1719 | m->mount_monitor = mnt_new_monitor(); |
1720 | if (!m->mount_monitor) { | |
ba64af90 | 1721 | log_oom(); |
718db961 | 1722 | goto fail; |
d379d442 | 1723 | } |
29083707 | 1724 | |
d379d442 | 1725 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1726 | if (r < 0) { |
1727 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1728 | goto fail; |
ba64af90 LP |
1729 | } |
1730 | ||
d379d442 | 1731 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1732 | if (r < 0) { |
1733 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1734 | goto fail; |
ba64af90 | 1735 | } |
90598531 | 1736 | |
d379d442 KZ |
1737 | /* mnt_unref_monitor() will close the fd */ |
1738 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1739 | if (r < 0) { |
1740 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1741 | goto fail; |
ba64af90 | 1742 | } |
befb6d54 | 1743 | |
d379d442 | 1744 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1745 | if (r < 0) { |
1746 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1747 | goto fail; |
ba64af90 | 1748 | } |
befb6d54 | 1749 | |
83231637 | 1750 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1751 | if (r < 0) { |
1752 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1753 | goto fail; |
ba64af90 | 1754 | } |
7dfbe2e3 | 1755 | |
d379d442 | 1756 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1757 | } |
1758 | ||
e62d8c39 ZJS |
1759 | r = mount_load_proc_self_mountinfo(m, false); |
1760 | if (r < 0) | |
b08d03ff LP |
1761 | goto fail; |
1762 | ||
ba64af90 | 1763 | return; |
b08d03ff LP |
1764 | |
1765 | fail: | |
1766 | mount_shutdown(m); | |
5cb5a6ff LP |
1767 | } |
1768 | ||
718db961 | 1769 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1770 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1771 | Manager *m = userdata; |
fcd8b266 LP |
1772 | const char *what; |
1773 | Iterator i; | |
595ed347 | 1774 | Unit *u; |
ef734fd6 LP |
1775 | int r; |
1776 | ||
1777 | assert(m); | |
d379d442 | 1778 | assert(revents & EPOLLIN); |
ef734fd6 | 1779 | |
d379d442 | 1780 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1781 | bool rescan = false; |
befb6d54 | 1782 | |
d379d442 KZ |
1783 | /* Drain all events and verify that the event is valid. |
1784 | * | |
1785 | * Note that libmount also monitors /run/mount mkdir if the | |
1786 | * directory does not exist yet. The mkdir may generate event | |
1787 | * which is irrelevant for us. | |
1788 | * | |
1789 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1790 | do { | |
1791 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1792 | if (r == 0) | |
1793 | rescan = true; | |
1794 | else if (r < 0) | |
5e1ee764 | 1795 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1796 | } while (r == 0); |
1797 | ||
1798 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1799 | if (!rescan) |
1800 | return 0; | |
1801 | } | |
ef734fd6 | 1802 | |
4f0eedb7 ZJS |
1803 | r = mount_load_proc_self_mountinfo(m, true); |
1804 | if (r < 0) { | |
e537352b | 1805 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1806 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1807 | Mount *mount = MOUNT(u); | |
e537352b LP |
1808 | |
1809 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1810 | } | |
1811 | ||
718db961 | 1812 | return 0; |
ef734fd6 LP |
1813 | } |
1814 | ||
1815 | manager_dispatch_load_queue(m); | |
1816 | ||
595ed347 MS |
1817 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1818 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1819 | |
11222d0f | 1820 | if (!mount_is_mounted(mount)) { |
e537352b | 1821 | |
394763f6 LP |
1822 | /* A mount point is not around right now. It |
1823 | * might be gone, or might never have | |
1824 | * existed. */ | |
1825 | ||
1826 | if (mount->from_proc_self_mountinfo && | |
1827 | mount->parameters_proc_self_mountinfo.what) { | |
1828 | ||
1829 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1830 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
394763f6 LP |
1831 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
1832 | log_oom(); /* we don't care too much about OOM here... */ | |
1833 | } | |
fcd8b266 | 1834 | |
ef734fd6 | 1835 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1836 | |
1837 | switch (mount->state) { | |
1838 | ||
1839 | case MOUNT_MOUNTED: | |
aef83136 LP |
1840 | /* This has just been unmounted by |
1841 | * somebody else, follow the state | |
1842 | * change. */ | |
cf6f7f66 | 1843 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1844 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1845 | break; |
1846 | ||
1847 | default: | |
e537352b | 1848 | break; |
e537352b LP |
1849 | } |
1850 | ||
1851 | } else if (mount->just_mounted || mount->just_changed) { | |
1852 | ||
fcd8b266 | 1853 | /* A mount point was added or changed */ |
e537352b LP |
1854 | |
1855 | switch (mount->state) { | |
1856 | ||
1857 | case MOUNT_DEAD: | |
fdf20a31 | 1858 | case MOUNT_FAILED: |
4b58153d LP |
1859 | |
1860 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1861 | * generate a new invocation ID for this implicitly and automatically. */ | |
1862 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1863 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1864 | break; |
1865 | ||
1866 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1867 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1868 | break; |
1869 | ||
1870 | default: | |
1871 | /* Nothing really changed, but let's | |
1872 | * issue an notification call | |
1873 | * nonetheless, in case somebody is | |
1874 | * waiting for this. (e.g. file system | |
1875 | * ro/rw remounts.) */ | |
1876 | mount_set_state(mount, mount->state); | |
1877 | break; | |
1878 | } | |
394763f6 | 1879 | } |
fcd8b266 | 1880 | |
11222d0f | 1881 | if (mount_is_mounted(mount) && |
394763f6 LP |
1882 | mount->from_proc_self_mountinfo && |
1883 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1884 | |
548f6937 | 1885 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
394763f6 LP |
1886 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) |
1887 | log_oom(); | |
e537352b LP |
1888 | } |
1889 | ||
1890 | /* Reset the flags for later calls */ | |
1891 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1892 | } | |
718db961 | 1893 | |
fcd8b266 LP |
1894 | SET_FOREACH(what, gone, i) { |
1895 | if (set_contains(around, what)) | |
1896 | continue; | |
1897 | ||
1898 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1899 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 LP |
1900 | } |
1901 | ||
718db961 | 1902 | return 0; |
e537352b LP |
1903 | } |
1904 | ||
fdf20a31 | 1905 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1906 | Mount *m = MOUNT(u); |
1907 | ||
1908 | assert(m); | |
1909 | ||
fdf20a31 | 1910 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1911 | mount_set_state(m, MOUNT_DEAD); |
1912 | ||
9d2f5178 LP |
1913 | m->result = MOUNT_SUCCESS; |
1914 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1915 | } |
1916 | ||
718db961 | 1917 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1918 | Mount *m = MOUNT(u); |
1919 | ||
1920 | assert(m); | |
1921 | ||
814cc562 | 1922 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1923 | } |
1924 | ||
291d565a LP |
1925 | static int mount_control_pid(Unit *u) { |
1926 | Mount *m = MOUNT(u); | |
1927 | ||
1928 | assert(m); | |
1929 | ||
1930 | return m->control_pid; | |
1931 | } | |
1932 | ||
a16e1123 LP |
1933 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1934 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1935 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1936 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1937 | }; | |
1938 | ||
1939 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1940 | ||
9d2f5178 LP |
1941 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1942 | [MOUNT_SUCCESS] = "success", | |
1943 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1944 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1945 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1946 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1947 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1948 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1949 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1950 | }; |
1951 | ||
1952 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1953 | ||
87f0e418 | 1954 | const UnitVTable mount_vtable = { |
7d17cfbc | 1955 | .object_size = sizeof(Mount), |
718db961 LP |
1956 | .exec_context_offset = offsetof(Mount, exec_context), |
1957 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1958 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1959 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1960 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1961 | |
f975e971 LP |
1962 | .sections = |
1963 | "Unit\0" | |
1964 | "Mount\0" | |
1965 | "Install\0", | |
4ad49000 | 1966 | .private_section = "Mount", |
71645aca | 1967 | |
e537352b LP |
1968 | .init = mount_init, |
1969 | .load = mount_load, | |
034c6ed7 | 1970 | .done = mount_done, |
e537352b | 1971 | |
f50e0a01 LP |
1972 | .coldplug = mount_coldplug, |
1973 | ||
034c6ed7 | 1974 | .dump = mount_dump, |
5cb5a6ff | 1975 | |
e537352b LP |
1976 | .start = mount_start, |
1977 | .stop = mount_stop, | |
1978 | .reload = mount_reload, | |
1979 | ||
8a0867d6 LP |
1980 | .kill = mount_kill, |
1981 | ||
a16e1123 LP |
1982 | .serialize = mount_serialize, |
1983 | .deserialize_item = mount_deserialize_item, | |
1984 | ||
f50e0a01 | 1985 | .active_state = mount_active_state, |
10a94420 | 1986 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1987 | |
f2f725e5 | 1988 | .may_gc = mount_may_gc, |
701cc384 | 1989 | |
e537352b | 1990 | .sigchld_event = mount_sigchld_event, |
e537352b | 1991 | |
fdf20a31 | 1992 | .reset_failed = mount_reset_failed, |
291d565a LP |
1993 | |
1994 | .control_pid = mount_control_pid, | |
5632e374 | 1995 | |
718db961 | 1996 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1997 | .bus_set_property = bus_mount_set_property, |
1998 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1999 | |
68db7a3b ZJS |
2000 | .get_timeout = mount_get_timeout, |
2001 | ||
0e252f6b TG |
2002 | .can_transient = true, |
2003 | ||
04eb582a | 2004 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2005 | .enumerate = mount_enumerate, |
c6918296 MS |
2006 | .shutdown = mount_shutdown, |
2007 | ||
2008 | .status_message_formats = { | |
2009 | .starting_stopping = { | |
2010 | [0] = "Mounting %s...", | |
2011 | [1] = "Unmounting %s...", | |
2012 | }, | |
2013 | .finished_start_job = { | |
2014 | [JOB_DONE] = "Mounted %s.", | |
2015 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2016 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2017 | }, | |
2018 | .finished_stop_job = { | |
2019 | [JOB_DONE] = "Unmounted %s.", | |
2020 | [JOB_FAILED] = "Failed unmounting %s.", | |
2021 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2022 | }, | |
2023 | }, | |
5cb5a6ff | 2024 | }; |