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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" |
57b7a260 | 14 | #include "device.h" |
4f5dd394 | 15 | #include "escape.h" |
9a57c629 | 16 | #include "exit-status.h" |
f97b34a6 | 17 | #include "format-util.h" |
4f5dd394 LP |
18 | #include "fstab-util.h" |
19 | #include "log.h" | |
20 | #include "manager.h" | |
21 | #include "mkdir.h" | |
22 | #include "mount-setup.h" | |
4e036b7a | 23 | #include "mount-util.h" |
4f5dd394 | 24 | #include "mount.h" |
6bedfcbb | 25 | #include "parse-util.h" |
4f5dd394 | 26 | #include "path-util.h" |
7b3e062c | 27 | #include "process-util.h" |
d68c645b | 28 | #include "serialize.h" |
4f5dd394 | 29 | #include "special.h" |
8b43440b | 30 | #include "string-table.h" |
b5efdb8a | 31 | #include "string-util.h" |
4f5dd394 LP |
32 | #include "strv.h" |
33 | #include "unit-name.h" | |
34 | #include "unit.h" | |
5cb5a6ff | 35 | |
7d54a03a LP |
36 | #define RETRY_UMOUNT_MAX 32 |
37 | ||
4e920142 ZJS |
38 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
39 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
40 | ||
f50e0a01 LP |
41 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
42 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
43 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 44 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 45 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 46 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 47 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
48 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
49 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
50 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
51 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 52 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 53 | }; |
5cb5a6ff | 54 | |
718db961 LP |
55 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
56 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
57 | ||
c634f3d2 LP |
58 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
59 | return IN_SET(state, | |
60 | MOUNT_MOUNTING, | |
61 | MOUNT_MOUNTING_DONE, | |
62 | MOUNT_REMOUNTING, | |
63 | MOUNT_REMOUNTING_SIGTERM, | |
64 | MOUNT_REMOUNTING_SIGKILL, | |
65 | MOUNT_UNMOUNTING, | |
66 | MOUNT_UNMOUNTING_SIGTERM, | |
67 | MOUNT_UNMOUNTING_SIGKILL); | |
68 | } | |
69 | ||
affc3d83 | 70 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 71 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
72 | return true; |
73 | ||
affc3d83 | 74 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
75 | return true; |
76 | ||
77 | return false; | |
78 | } | |
79 | ||
e6a7b9f4 | 80 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
81 | assert(p); |
82 | ||
83 | return mount_needs_network(p->options, p->fstype); | |
84 | } | |
85 | ||
d3bd0986 MK |
86 | static bool mount_is_loop(const MountParameters *p) { |
87 | assert(p); | |
88 | ||
89 | if (fstab_test_option(p->options, "loop\0")) | |
90 | return true; | |
91 | ||
92 | return false; | |
93 | } | |
94 | ||
e6a7b9f4 | 95 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
96 | assert(p); |
97 | ||
d15d0333 | 98 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
99 | return true; |
100 | ||
d15d0333 | 101 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
102 | return true; |
103 | ||
104 | return false; | |
105 | } | |
106 | ||
e6a7b9f4 | 107 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
108 | assert(p); |
109 | ||
d15d0333 | 110 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
111 | } |
112 | ||
2b14df4a FB |
113 | static bool mount_is_automount(const MountParameters *p) { |
114 | assert(p); | |
115 | ||
116 | return fstab_test_option(p->options, | |
117 | "comment=systemd.automount\0" | |
118 | "x-systemd.automount\0"); | |
119 | } | |
120 | ||
ebc8968b FB |
121 | static bool mount_is_bound_to_device(const Mount *m) { |
122 | const MountParameters *p; | |
123 | ||
124 | if (m->from_fragment) | |
125 | return true; | |
126 | ||
127 | p = &m->parameters_proc_self_mountinfo; | |
128 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
129 | } | |
130 | ||
e6a7b9f4 | 131 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
132 | assert(p); |
133 | ||
11041c84 | 134 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 135 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 136 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
137 | return false; |
138 | ||
139 | if (mount_is_bind(p)) | |
140 | return false; | |
141 | ||
d15d0333 ZJS |
142 | return fstab_test_option(p->options, |
143 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
144 | } |
145 | ||
a16e1123 LP |
146 | static void mount_init(Unit *u) { |
147 | Mount *m = MOUNT(u); | |
5cb5a6ff | 148 | |
a16e1123 | 149 | assert(u); |
ac155bb8 | 150 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 151 | |
1f19a534 | 152 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
153 | |
154 | m->exec_context.std_output = u->manager->default_std_output; | |
155 | m->exec_context.std_error = u->manager->default_std_error; | |
156 | ||
3e5235b0 LP |
157 | m->directory_mode = 0755; |
158 | ||
f00929ad DJL |
159 | /* We need to make sure that /usr/bin/mount is always called |
160 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
161 | * side doesn't send us another mount request while we are |
162 | * already trying to comply its last one. */ | |
74922904 | 163 | m->exec_context.same_pgrp = true; |
8d567588 | 164 | |
a16e1123 | 165 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 166 | |
5bcb0f2b | 167 | u->ignore_on_isolate = true; |
8d567588 LP |
168 | } |
169 | ||
36c16a7c | 170 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
171 | int r; |
172 | ||
173 | assert(m); | |
174 | ||
718db961 | 175 | if (m->timer_event_source) { |
36c16a7c | 176 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
177 | if (r < 0) |
178 | return r; | |
179 | ||
180 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
181 | } | |
182 | ||
36c16a7c LP |
183 | if (usec == USEC_INFINITY) |
184 | return 0; | |
185 | ||
7dfbe2e3 | 186 | r = sd_event_add_time( |
6a0f1f6d LP |
187 | UNIT(m)->manager->event, |
188 | &m->timer_event_source, | |
189 | CLOCK_MONOTONIC, | |
36c16a7c | 190 | usec, 0, |
6a0f1f6d | 191 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
192 | if (r < 0) |
193 | return r; | |
194 | ||
195 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
196 | ||
197 | return 0; | |
718db961 LP |
198 | } |
199 | ||
a16e1123 | 200 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
201 | assert(m); |
202 | ||
203 | if (m->control_pid <= 0) | |
204 | return; | |
205 | ||
206 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
207 | m->control_pid = 0; | |
208 | } | |
209 | ||
e537352b LP |
210 | static void mount_parameters_done(MountParameters *p) { |
211 | assert(p); | |
212 | ||
213 | free(p->what); | |
214 | free(p->options); | |
215 | free(p->fstype); | |
216 | ||
217 | p->what = p->options = p->fstype = NULL; | |
218 | } | |
219 | ||
87f0e418 | 220 | static void mount_done(Unit *u) { |
ef734fd6 | 221 | Mount *m = MOUNT(u); |
034c6ed7 | 222 | |
ef734fd6 | 223 | assert(m); |
034c6ed7 | 224 | |
a1e58e8e | 225 | m->where = mfree(m->where); |
f50e0a01 | 226 | |
e537352b LP |
227 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
228 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 229 | |
e8a565cb | 230 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
231 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
232 | m->control_command = NULL; | |
f50e0a01 | 233 | |
29206d46 LP |
234 | dynamic_creds_unref(&m->dynamic_creds); |
235 | ||
a16e1123 | 236 | mount_unwatch_control_pid(m); |
f50e0a01 | 237 | |
718db961 | 238 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
239 | } |
240 | ||
44a6b1b6 | 241 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
242 | assert(m); |
243 | ||
244 | if (m->from_fragment) | |
245 | return &m->parameters_fragment; | |
cb39ed3f LP |
246 | |
247 | return NULL; | |
248 | } | |
249 | ||
44a6b1b6 | 250 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
251 | assert(m); |
252 | ||
253 | if (m->from_proc_self_mountinfo) | |
254 | return &m->parameters_proc_self_mountinfo; | |
255 | ||
6b1dc2bd | 256 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
257 | } |
258 | ||
eef85c4a | 259 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 260 | MountParameters *pm; |
ac155bb8 | 261 | Unit *other; |
a57f7e2c LP |
262 | Iterator i; |
263 | Set *s; | |
b08d03ff LP |
264 | int r; |
265 | ||
6e2ef85b | 266 | assert(m); |
b08d03ff | 267 | |
a57f7e2c | 268 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
269 | _cleanup_free_ char *parent = NULL; |
270 | ||
271 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
272 | |
273 | parent = dirname_malloc(m->where); | |
274 | if (!parent) | |
275 | return -ENOMEM; | |
01f78473 | 276 | |
eef85c4a | 277 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 278 | if (r < 0) |
01f78473 | 279 | return r; |
4f0eedb7 | 280 | } |
01f78473 | 281 | |
eef85c4a LP |
282 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
283 | * or a loop mount) to be available. */ | |
a57f7e2c | 284 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
285 | if (pm && pm->what && |
286 | path_is_absolute(pm->what) && | |
d3bd0986 | 287 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 288 | |
eef85c4a | 289 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 290 | if (r < 0) |
6e2ef85b | 291 | return r; |
4f0eedb7 | 292 | } |
b08d03ff | 293 | |
eef85c4a | 294 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
295 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
296 | SET_FOREACH(other, s, i) { | |
b08d03ff | 297 | |
a57f7e2c LP |
298 | if (other->load_state != UNIT_LOADED) |
299 | continue; | |
b08d03ff | 300 | |
a57f7e2c LP |
301 | if (other == UNIT(m)) |
302 | continue; | |
b08d03ff | 303 | |
eef85c4a | 304 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 305 | if (r < 0) |
6e2ef85b | 306 | return r; |
b08d03ff | 307 | |
a57f7e2c LP |
308 | if (UNIT(m)->fragment_path) { |
309 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 310 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
311 | if (r < 0) |
312 | return r; | |
313 | } | |
7c8fa05c LP |
314 | } |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
eef85c4a | 319 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 320 | bool device_wants_mount = false; |
eef85c4a LP |
321 | UnitDependencyMask mask; |
322 | MountParameters *p; | |
ebc8968b | 323 | UnitDependency dep; |
9fff8a1f | 324 | int r; |
173a8d04 LP |
325 | |
326 | assert(m); | |
327 | ||
06e97888 | 328 | p = get_mount_parameters(m); |
6b1dc2bd | 329 | if (!p) |
173a8d04 LP |
330 | return 0; |
331 | ||
9fff8a1f | 332 | if (!p->what) |
173a8d04 | 333 | return 0; |
5c78d8e2 | 334 | |
dd144c63 LP |
335 | if (mount_is_bind(p)) |
336 | return 0; | |
337 | ||
338 | if (!is_device_path(p->what)) | |
339 | return 0; | |
340 | ||
7ba2711d LP |
341 | /* /dev/root is a really weird thing, it's not a real device, |
342 | * but just a path the kernel exports for the root file system | |
343 | * specified on the kernel command line. Ignore it here. */ | |
344 | if (path_equal(p->what, "/dev/root")) | |
345 | return 0; | |
346 | ||
dd144c63 LP |
347 | if (path_equal(m->where, "/")) |
348 | return 0; | |
349 | ||
463d0d15 | 350 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
351 | device_wants_mount = true; |
352 | ||
ebc8968b FB |
353 | /* Mount units from /proc/self/mountinfo are not bound to devices |
354 | * by default since they're subject to races when devices are | |
355 | * unplugged. But the user can still force this dep with an | |
356 | * appropriate option (or udev property) so the mount units are | |
357 | * automatically stopped when the device disappears suddenly. */ | |
358 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
359 | ||
eef85c4a LP |
360 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
361 | ||
362 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
363 | if (r < 0) |
364 | return r; | |
9fff8a1f | 365 | |
9fff8a1f | 366 | return 0; |
173a8d04 LP |
367 | } |
368 | ||
eef85c4a LP |
369 | static int mount_add_quota_dependencies(Mount *m) { |
370 | UnitDependencyMask mask; | |
6b1dc2bd | 371 | MountParameters *p; |
eef85c4a | 372 | int r; |
6b1dc2bd LP |
373 | |
374 | assert(m); | |
375 | ||
463d0d15 | 376 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
377 | return 0; |
378 | ||
379 | p = get_mount_parameters_fragment(m); | |
380 | if (!p) | |
381 | return 0; | |
382 | ||
383 | if (!needs_quota(p)) | |
384 | return 0; | |
385 | ||
eef85c4a LP |
386 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
387 | ||
5a724170 | 388 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
389 | if (r < 0) |
390 | return r; | |
391 | ||
5a724170 | 392 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
393 | if (r < 0) |
394 | return r; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
ad2706db | 399 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 400 | MountParameters *p; |
ad2706db | 401 | assert(m); |
88ac30a1 | 402 | |
ad2706db LP |
403 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
404 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
405 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
406 | ||
407 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
408 | return true; | |
409 | ||
410 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
411 | "/", | |
412 | "/usr")) | |
413 | return true; | |
88ac30a1 | 414 | |
ad2706db LP |
415 | if (PATH_STARTSWITH_SET(m->where, |
416 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
417 | "/proc", /* All of this is API VFS */ | |
418 | "/sys", /* … dito … */ | |
419 | "/dev")) /* … dito … */ | |
420 | return true; | |
421 | ||
422 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 423 | p = get_mount_parameters(m); |
ad2706db LP |
424 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
425 | return true; | |
88ac30a1 | 426 | |
ad2706db | 427 | return false; |
88ac30a1 TG |
428 | } |
429 | ||
2edd4434 | 430 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
431 | UnitDependencyMask mask; |
432 | int r; | |
9ddc4a26 | 433 | MountParameters *p; |
ea0ec5ce | 434 | const char *after; |
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 LP |
451 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
452 | ||
e8d2f6cd | 453 | if (mount_is_network(p)) { |
ea0ec5ce LP |
454 | /* We order ourselves after network.target. This is |
455 | * primarily useful at shutdown: services that take | |
456 | * down the network should order themselves before | |
457 | * network.target, so that they are shut down only | |
458 | * after this mount unit is stopped. */ | |
6b1dc2bd | 459 | |
35d8c19a | 460 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
461 | if (r < 0) |
462 | return r; | |
a63a5c46 | 463 | |
ea0ec5ce LP |
464 | /* We pull in network-online.target, and order |
465 | * ourselves after it. This is useful at start-up to | |
466 | * actively pull in tools that want to be started | |
467 | * before we start mounting network file systems, and | |
468 | * whose purpose it is to delay this until the network | |
469 | * is "up". */ | |
470 | ||
5a724170 | 471 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
472 | if (r < 0) |
473 | return r; | |
ea0ec5ce LP |
474 | |
475 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
476 | } else | |
477 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
478 | ||
35d8c19a | 479 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
480 | if (r < 0) |
481 | return r; | |
e8d2f6cd | 482 | |
5a724170 | 483 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
484 | if (r < 0) |
485 | return r; | |
2edd4434 | 486 | |
3e3852b3 | 487 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 488 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 489 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
490 | if (r < 0) |
491 | return r; | |
492 | } | |
493 | ||
2edd4434 LP |
494 | return 0; |
495 | } | |
496 | ||
8d567588 | 497 | static int mount_verify(Mount *m) { |
a57f7e2c | 498 | _cleanup_free_ char *e = NULL; |
b294b79f | 499 | MountParameters *p; |
7410616c | 500 | int r; |
a57f7e2c | 501 | |
8d567588 LP |
502 | assert(m); |
503 | ||
1124fe6f | 504 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
505 | return 0; |
506 | ||
1df96fcb | 507 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
508 | return -ENOENT; |
509 | ||
7410616c LP |
510 | r = unit_name_from_path(m->where, ".mount", &e); |
511 | if (r < 0) | |
f2341e0a | 512 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 513 | |
7410616c | 514 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 515 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 516 | return -ENOEXEC; |
8d567588 LP |
517 | } |
518 | ||
33ff02c9 | 519 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 520 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 521 | return -ENOEXEC; |
33ff02c9 LP |
522 | } |
523 | ||
b294b79f MO |
524 | p = get_mount_parameters_fragment(m); |
525 | if (p && !p->what) { | |
f2341e0a | 526 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 527 | return -ENOEXEC; |
4e85aff4 LP |
528 | } |
529 | ||
4819ff03 | 530 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 531 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 532 | return -ENOEXEC; |
4d0e5dbd LP |
533 | } |
534 | ||
8d567588 LP |
535 | return 0; |
536 | } | |
537 | ||
1a4ac875 MS |
538 | static int mount_add_extras(Mount *m) { |
539 | Unit *u = UNIT(m); | |
e537352b LP |
540 | int r; |
541 | ||
e821075a LP |
542 | assert(m); |
543 | ||
544 | if (u->fragment_path) | |
1a4ac875 | 545 | m->from_fragment = true; |
e537352b | 546 | |
1a4ac875 | 547 | if (!m->where) { |
7410616c LP |
548 | r = unit_name_to_path(u->id, &m->where); |
549 | if (r < 0) | |
550 | return r; | |
1a4ac875 | 551 | } |
a16e1123 | 552 | |
858d36c1 | 553 | path_simplify(m->where, false); |
e537352b | 554 | |
e821075a | 555 | if (!u->description) { |
1a4ac875 MS |
556 | r = unit_set_description(u, m->where); |
557 | if (r < 0) | |
173a8d04 | 558 | return r; |
1a4ac875 | 559 | } |
6e2ef85b | 560 | |
eef85c4a | 561 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
562 | if (r < 0) |
563 | return r; | |
6e2ef85b | 564 | |
eef85c4a | 565 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
566 | if (r < 0) |
567 | return r; | |
6e2ef85b | 568 | |
eef85c4a | 569 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
570 | if (r < 0) |
571 | return r; | |
e537352b | 572 | |
598459ce LP |
573 | r = unit_patch_contexts(u); |
574 | if (r < 0) | |
575 | return r; | |
4e67ddd6 | 576 | |
598459ce | 577 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
578 | if (r < 0) |
579 | return r; | |
580 | ||
d79200e2 | 581 | r = unit_set_default_slice(u); |
1a4ac875 MS |
582 | if (r < 0) |
583 | return r; | |
584 | ||
4c9ea260 LP |
585 | r = mount_add_default_dependencies(m); |
586 | if (r < 0) | |
587 | return r; | |
598459ce | 588 | |
1a4ac875 MS |
589 | return 0; |
590 | } | |
591 | ||
11222d0f LP |
592 | static int mount_load_root_mount(Unit *u) { |
593 | assert(u); | |
594 | ||
595 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
596 | return 0; | |
597 | ||
598 | u->perpetual = true; | |
599 | u->default_dependencies = false; | |
600 | ||
601 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
602 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
603 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
604 | ||
605 | if (!u->description) | |
606 | u->description = strdup("Root Mount"); | |
607 | ||
608 | return 1; | |
609 | } | |
610 | ||
1a4ac875 MS |
611 | static int mount_load(Unit *u) { |
612 | Mount *m = MOUNT(u); | |
613 | int r; | |
614 | ||
615 | assert(u); | |
616 | assert(u->load_state == UNIT_STUB); | |
617 | ||
11222d0f LP |
618 | r = mount_load_root_mount(u); |
619 | if (r < 0) | |
620 | return r; | |
621 | ||
622 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
623 | r = unit_load_fragment_and_dropin_optional(u); |
624 | else | |
625 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
626 | if (r < 0) |
627 | return r; | |
155da457 | 628 | |
1a4ac875 MS |
629 | /* This is a new unit? Then let's add in some extras */ |
630 | if (u->load_state == UNIT_LOADED) { | |
631 | r = mount_add_extras(m); | |
632 | if (r < 0) | |
633 | return r; | |
e537352b LP |
634 | } |
635 | ||
8d567588 | 636 | return mount_verify(m); |
e537352b LP |
637 | } |
638 | ||
639 | static void mount_set_state(Mount *m, MountState state) { | |
640 | MountState old_state; | |
641 | assert(m); | |
642 | ||
643 | old_state = m->state; | |
644 | m->state = state; | |
645 | ||
c634f3d2 | 646 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 647 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 648 | mount_unwatch_control_pid(m); |
e537352b | 649 | m->control_command = NULL; |
a16e1123 | 650 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
651 | } |
652 | ||
653 | if (state != old_state) | |
f2341e0a | 654 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 655 | |
2ad2e41a LP |
656 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
657 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
658 | } |
659 | ||
be847e82 | 660 | static int mount_coldplug(Unit *u) { |
e537352b | 661 | Mount *m = MOUNT(u); |
a16e1123 LP |
662 | MountState new_state = MOUNT_DEAD; |
663 | int r; | |
e537352b LP |
664 | |
665 | assert(m); | |
666 | assert(m->state == MOUNT_DEAD); | |
667 | ||
a16e1123 LP |
668 | if (m->deserialized_state != m->state) |
669 | new_state = m->deserialized_state; | |
670 | else if (m->from_proc_self_mountinfo) | |
671 | new_state = MOUNT_MOUNTED; | |
e537352b | 672 | |
5bcb0f2b LP |
673 | if (new_state == m->state) |
674 | return 0; | |
e537352b | 675 | |
c386f588 LP |
676 | if (m->control_pid > 0 && |
677 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 678 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
679 | |
680 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
681 | if (r < 0) | |
682 | return r; | |
e537352b | 683 | |
36c16a7c | 684 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
685 | if (r < 0) |
686 | return r; | |
a16e1123 | 687 | } |
e537352b | 688 | |
e8a565cb | 689 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 690 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
691 | (void) unit_setup_exec_runtime(u); |
692 | } | |
29206d46 | 693 | |
5bcb0f2b | 694 | mount_set_state(m, new_state); |
e537352b | 695 | return 0; |
e537352b LP |
696 | } |
697 | ||
698 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 699 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
700 | Mount *m = MOUNT(u); |
701 | MountParameters *p; | |
702 | ||
703 | assert(m); | |
704 | assert(f); | |
705 | ||
cb39ed3f | 706 | p = get_mount_parameters(m); |
e537352b LP |
707 | |
708 | fprintf(f, | |
709 | "%sMount State: %s\n" | |
81a5c6d0 | 710 | "%sResult: %s\n" |
e537352b LP |
711 | "%sWhere: %s\n" |
712 | "%sWhat: %s\n" | |
713 | "%sFile System Type: %s\n" | |
714 | "%sOptions: %s\n" | |
e537352b LP |
715 | "%sFrom /proc/self/mountinfo: %s\n" |
716 | "%sFrom fragment: %s\n" | |
ad2706db | 717 | "%sExtrinsic: %s\n" |
e520950a | 718 | "%sDirectoryMode: %04o\n" |
49915de2 | 719 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 720 | "%sLazyUnmount: %s\n" |
91899792 YW |
721 | "%sForceUnmount: %s\n" |
722 | "%sTimoutSec: %s\n", | |
a16e1123 | 723 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 724 | prefix, mount_result_to_string(m->result), |
e537352b | 725 | prefix, m->where, |
1e4fc9b1 HH |
726 | prefix, p ? strna(p->what) : "n/a", |
727 | prefix, p ? strna(p->fstype) : "n/a", | |
728 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
729 | prefix, yes_no(m->from_proc_self_mountinfo), |
730 | prefix, yes_no(m->from_fragment), | |
ad2706db | 731 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 732 | prefix, m->directory_mode, |
49915de2 | 733 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 734 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
735 | prefix, yes_no(m->force_unmount), |
736 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
737 | |
738 | if (m->control_pid > 0) | |
739 | fprintf(f, | |
ccd06097 ZJS |
740 | "%sControl PID: "PID_FMT"\n", |
741 | prefix, m->control_pid); | |
e537352b LP |
742 | |
743 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 744 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 745 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
746 | } |
747 | ||
a16e1123 | 748 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 749 | |
9fa95f85 | 750 | ExecParameters exec_params = { |
5686391b LP |
751 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
752 | .stdin_fd = -1, | |
753 | .stdout_fd = -1, | |
754 | .stderr_fd = -1, | |
755 | .exec_fd = -1, | |
9fa95f85 | 756 | }; |
3c7416b6 LP |
757 | pid_t pid; |
758 | int r; | |
a16e1123 LP |
759 | |
760 | assert(m); | |
761 | assert(c); | |
762 | assert(_pid); | |
763 | ||
3c7416b6 | 764 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
765 | if (r < 0) |
766 | return r; | |
767 | ||
36c16a7c | 768 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 769 | if (r < 0) |
36c16a7c | 770 | return r; |
a16e1123 | 771 | |
1ad6e8b3 LP |
772 | r = unit_set_exec_params(UNIT(m), &exec_params); |
773 | if (r < 0) | |
774 | return r; | |
9fa95f85 | 775 | |
f2341e0a LP |
776 | r = exec_spawn(UNIT(m), |
777 | c, | |
4ad49000 | 778 | &m->exec_context, |
9fa95f85 | 779 | &exec_params, |
613b411c | 780 | m->exec_runtime, |
29206d46 | 781 | &m->dynamic_creds, |
4ad49000 LP |
782 | &pid); |
783 | if (r < 0) | |
36c16a7c | 784 | return r; |
a16e1123 | 785 | |
4ad49000 LP |
786 | r = unit_watch_pid(UNIT(m), pid); |
787 | if (r < 0) | |
a16e1123 | 788 | /* FIXME: we need to do something here */ |
36c16a7c | 789 | return r; |
a16e1123 LP |
790 | |
791 | *_pid = pid; | |
792 | ||
793 | return 0; | |
a16e1123 LP |
794 | } |
795 | ||
9d2f5178 | 796 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
797 | assert(m); |
798 | ||
a0fef983 | 799 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 800 | m->result = f; |
e537352b | 801 | |
ed77d407 LP |
802 | if (m->result != MOUNT_SUCCESS) |
803 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
804 | ||
29206d46 LP |
805 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
806 | ||
e8a565cb | 807 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 808 | |
3536f49e | 809 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 810 | |
00d9ef85 LP |
811 | unit_unref_uid_gid(UNIT(m), true); |
812 | ||
29206d46 | 813 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
814 | } |
815 | ||
9d2f5178 | 816 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
817 | assert(m); |
818 | ||
a0fef983 | 819 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 820 | m->result = f; |
80876c20 LP |
821 | |
822 | mount_set_state(m, MOUNT_MOUNTED); | |
823 | } | |
824 | ||
22af0e58 LP |
825 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
826 | assert(m); | |
827 | ||
828 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
829 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
830 | * ultimately we just mirror the kernel's internal state on this. */ | |
831 | ||
832 | if (m->from_proc_self_mountinfo) | |
833 | mount_enter_mounted(m, f); | |
834 | else | |
835 | mount_enter_dead(m, f); | |
836 | } | |
837 | ||
838 | static int state_to_kill_operation(MountState state) { | |
839 | switch (state) { | |
840 | ||
841 | case MOUNT_REMOUNTING_SIGTERM: | |
842 | case MOUNT_UNMOUNTING_SIGTERM: | |
843 | return KILL_TERMINATE; | |
844 | ||
845 | case MOUNT_REMOUNTING_SIGKILL: | |
846 | case MOUNT_UNMOUNTING_SIGKILL: | |
847 | return KILL_KILL; | |
848 | ||
849 | default: | |
850 | return _KILL_OPERATION_INVALID; | |
851 | } | |
852 | } | |
853 | ||
9d2f5178 | 854 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
855 | int r; |
856 | ||
857 | assert(m); | |
858 | ||
a0fef983 | 859 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 860 | m->result = f; |
e537352b | 861 | |
cd2086fe LP |
862 | r = unit_kill_context( |
863 | UNIT(m), | |
864 | &m->kill_context, | |
22af0e58 | 865 | state_to_kill_operation(state), |
cd2086fe LP |
866 | -1, |
867 | m->control_pid, | |
868 | false); | |
869 | if (r < 0) | |
870 | goto fail; | |
e537352b | 871 | |
cd2086fe | 872 | if (r > 0) { |
36c16a7c | 873 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 874 | if (r < 0) |
80876c20 | 875 | goto fail; |
e537352b | 876 | |
80876c20 | 877 | mount_set_state(m, state); |
22af0e58 | 878 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 879 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 880 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 881 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 882 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 883 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 884 | else |
22af0e58 | 885 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
886 | |
887 | return; | |
888 | ||
889 | fail: | |
f2341e0a | 890 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 891 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
892 | } |
893 | ||
9d2f5178 | 894 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
895 | int r; |
896 | ||
897 | assert(m); | |
898 | ||
7d54a03a LP |
899 | /* Start counting our attempts */ |
900 | if (!IN_SET(m->state, | |
901 | MOUNT_UNMOUNTING, | |
902 | MOUNT_UNMOUNTING_SIGTERM, | |
903 | MOUNT_UNMOUNTING_SIGKILL)) | |
904 | m->n_retry_umount = 0; | |
905 | ||
a16e1123 LP |
906 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
907 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 908 | |
83897d54 | 909 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
910 | if (r >= 0 && m->lazy_unmount) |
911 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
912 | if (r >= 0 && m->force_unmount) |
913 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 914 | if (r < 0) |
e537352b LP |
915 | goto fail; |
916 | ||
a16e1123 | 917 | mount_unwatch_control_pid(m); |
5e94833f | 918 | |
7d54a03a LP |
919 | r = mount_spawn(m, m->control_command, &m->control_pid); |
920 | if (r < 0) | |
e537352b LP |
921 | goto fail; |
922 | ||
923 | mount_set_state(m, MOUNT_UNMOUNTING); | |
924 | ||
925 | return; | |
926 | ||
927 | fail: | |
f2341e0a | 928 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 929 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
930 | } |
931 | ||
8d567588 | 932 | static void mount_enter_mounting(Mount *m) { |
e537352b | 933 | int r; |
cb39ed3f | 934 | MountParameters *p; |
e537352b LP |
935 | |
936 | assert(m); | |
937 | ||
25cd4964 | 938 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
939 | if (r < 0) |
940 | goto fail; | |
941 | ||
942 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 943 | |
f2341e0a | 944 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 945 | |
a4634b21 LP |
946 | unit_warn_leftover_processes(UNIT(m)); |
947 | ||
948 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
949 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
950 | ||
cb39ed3f | 951 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 952 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 953 | if (p && mount_is_bind(p)) |
f2341e0a | 954 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 955 | |
b294b79f | 956 | if (p) { |
17a1c597 ZJS |
957 | _cleanup_free_ char *opts = NULL; |
958 | ||
b294b79f | 959 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
960 | if (r < 0) |
961 | goto fail; | |
962 | ||
b294b79f | 963 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
964 | if (r >= 0 && m->sloppy_options) |
965 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
966 | if (r >= 0 && p->fstype) |
967 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 968 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 969 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 970 | } else |
e537352b | 971 | r = -ENOENT; |
e537352b LP |
972 | if (r < 0) |
973 | goto fail; | |
974 | ||
a16e1123 | 975 | mount_unwatch_control_pid(m); |
5e94833f | 976 | |
257f1d8e LP |
977 | r = mount_spawn(m, m->control_command, &m->control_pid); |
978 | if (r < 0) | |
e537352b LP |
979 | goto fail; |
980 | ||
981 | mount_set_state(m, MOUNT_MOUNTING); | |
982 | ||
983 | return; | |
984 | ||
985 | fail: | |
f2341e0a | 986 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 987 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
988 | } |
989 | ||
850b7410 LP |
990 | static void mount_set_reload_result(Mount *m, MountResult result) { |
991 | assert(m); | |
992 | ||
993 | /* Only store the first error we encounter */ | |
994 | if (m->reload_result != MOUNT_SUCCESS) | |
995 | return; | |
996 | ||
997 | m->reload_result = result; | |
998 | } | |
999 | ||
9d2f5178 | 1000 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1001 | int r; |
b294b79f | 1002 | MountParameters *p; |
e537352b LP |
1003 | |
1004 | assert(m); | |
1005 | ||
850b7410 LP |
1006 | /* Reset reload result when we are about to start a new remount operation */ |
1007 | m->reload_result = MOUNT_SUCCESS; | |
1008 | ||
a16e1123 LP |
1009 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1010 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1011 | |
b294b79f MO |
1012 | p = get_mount_parameters_fragment(m); |
1013 | if (p) { | |
e537352b LP |
1014 | const char *o; |
1015 | ||
b294b79f MO |
1016 | if (p->options) |
1017 | o = strjoina("remount,", p->options); | |
718db961 | 1018 | else |
e537352b LP |
1019 | o = "remount"; |
1020 | ||
f00929ad | 1021 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1022 | p->what, m->where, |
e86b3761 | 1023 | "-o", o, NULL); |
e86b3761 ZJS |
1024 | if (r >= 0 && m->sloppy_options) |
1025 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1026 | if (r >= 0 && p->fstype) |
1027 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1028 | } else |
e537352b | 1029 | r = -ENOENT; |
60b912f6 | 1030 | if (r < 0) |
e537352b | 1031 | goto fail; |
e537352b | 1032 | |
a16e1123 | 1033 | mount_unwatch_control_pid(m); |
5e94833f | 1034 | |
718db961 LP |
1035 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1036 | if (r < 0) | |
e537352b LP |
1037 | goto fail; |
1038 | ||
1039 | mount_set_state(m, MOUNT_REMOUNTING); | |
1040 | ||
1041 | return; | |
1042 | ||
1043 | fail: | |
f2341e0a | 1044 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1045 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1046 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1047 | } |
1048 | ||
1049 | static int mount_start(Unit *u) { | |
1050 | Mount *m = MOUNT(u); | |
07299350 | 1051 | int r; |
e537352b LP |
1052 | |
1053 | assert(m); | |
1054 | ||
1055 | /* We cannot fulfill this request right now, try again later | |
1056 | * please! */ | |
f2aed307 LP |
1057 | if (IN_SET(m->state, |
1058 | MOUNT_UNMOUNTING, | |
1059 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1060 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1061 | return -EAGAIN; |
1062 | ||
1063 | /* Already on it! */ | |
60b912f6 | 1064 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1065 | return 0; |
1066 | ||
f2aed307 | 1067 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1068 | |
07299350 LP |
1069 | r = unit_start_limit_test(u); |
1070 | if (r < 0) { | |
1071 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1072 | return r; | |
1073 | } | |
1074 | ||
4b58153d LP |
1075 | r = unit_acquire_invocation_id(u); |
1076 | if (r < 0) | |
1077 | return r; | |
1078 | ||
9d2f5178 LP |
1079 | m->result = MOUNT_SUCCESS; |
1080 | m->reload_result = MOUNT_SUCCESS; | |
6a1d4d9f | 1081 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
3c7416b6 LP |
1082 | |
1083 | u->reset_accounting = true; | |
9d2f5178 | 1084 | |
8d567588 | 1085 | mount_enter_mounting(m); |
82a2b6bb | 1086 | return 1; |
e537352b LP |
1087 | } |
1088 | ||
1089 | static int mount_stop(Unit *u) { | |
1090 | Mount *m = MOUNT(u); | |
1091 | ||
1092 | assert(m); | |
1093 | ||
22af0e58 LP |
1094 | switch (m->state) { |
1095 | ||
1096 | case MOUNT_UNMOUNTING: | |
1097 | case MOUNT_UNMOUNTING_SIGKILL: | |
1098 | case MOUNT_UNMOUNTING_SIGTERM: | |
1099 | /* Already on it */ | |
e537352b LP |
1100 | return 0; |
1101 | ||
22af0e58 LP |
1102 | case MOUNT_MOUNTING: |
1103 | case MOUNT_MOUNTING_DONE: | |
1104 | case MOUNT_REMOUNTING: | |
1105 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1106 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1107 | return 0; | |
e537352b | 1108 | |
22af0e58 LP |
1109 | case MOUNT_REMOUNTING_SIGTERM: |
1110 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1111 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1112 | return 0; | |
1113 | ||
1114 | case MOUNT_REMOUNTING_SIGKILL: | |
1115 | /* as above */ | |
1116 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1117 | return 0; | |
1118 | ||
1119 | case MOUNT_MOUNTED: | |
1120 | mount_enter_unmounting(m); | |
1121 | return 1; | |
1122 | ||
1123 | default: | |
1124 | assert_not_reached("Unexpected state."); | |
1125 | } | |
e537352b LP |
1126 | } |
1127 | ||
1128 | static int mount_reload(Unit *u) { | |
1129 | Mount *m = MOUNT(u); | |
1130 | ||
1131 | assert(m); | |
e537352b LP |
1132 | assert(m->state == MOUNT_MOUNTED); |
1133 | ||
9d2f5178 | 1134 | mount_enter_remounting(m); |
22af0e58 | 1135 | |
2d018ae2 | 1136 | return 1; |
e537352b LP |
1137 | } |
1138 | ||
a16e1123 LP |
1139 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1140 | Mount *m = MOUNT(u); | |
1141 | ||
1142 | assert(m); | |
1143 | assert(f); | |
1144 | assert(fds); | |
1145 | ||
d68c645b LP |
1146 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1147 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1148 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1149 | |
1150 | if (m->control_pid > 0) | |
d68c645b | 1151 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1152 | |
1153 | if (m->control_command_id >= 0) | |
d68c645b | 1154 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1155 | |
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1160 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1161 | |
1162 | assert(u); | |
1163 | assert(key); | |
1164 | assert(value); | |
1165 | assert(fds); | |
1166 | ||
1167 | if (streq(key, "state")) { | |
1168 | MountState state; | |
1169 | ||
1170 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1171 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1172 | else |
1173 | m->deserialized_state = state; | |
9d2f5178 LP |
1174 | } else if (streq(key, "result")) { |
1175 | MountResult f; | |
a16e1123 | 1176 | |
9d2f5178 LP |
1177 | f = mount_result_from_string(value); |
1178 | if (f < 0) | |
f2341e0a | 1179 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1180 | else if (f != MOUNT_SUCCESS) |
1181 | m->result = f; | |
1182 | ||
1183 | } else if (streq(key, "reload-result")) { | |
1184 | MountResult f; | |
1185 | ||
1186 | f = mount_result_from_string(value); | |
1187 | if (f < 0) | |
f2341e0a | 1188 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1189 | else if (f != MOUNT_SUCCESS) |
1190 | m->reload_result = f; | |
a16e1123 LP |
1191 | |
1192 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1193 | pid_t pid; |
a16e1123 | 1194 | |
e364ad06 | 1195 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1196 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1197 | else |
5925dd3c | 1198 | m->control_pid = pid; |
a16e1123 LP |
1199 | } else if (streq(key, "control-command")) { |
1200 | MountExecCommand id; | |
1201 | ||
f2341e0a LP |
1202 | id = mount_exec_command_from_string(value); |
1203 | if (id < 0) | |
1204 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1205 | else { |
1206 | m->control_command_id = id; | |
1207 | m->control_command = m->exec_command + id; | |
1208 | } | |
a16e1123 | 1209 | } else |
f2341e0a | 1210 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1211 | |
1212 | return 0; | |
1213 | } | |
1214 | ||
44a6b1b6 | 1215 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1216 | assert(u); |
1217 | ||
1218 | return state_translation_table[MOUNT(u)->state]; | |
1219 | } | |
1220 | ||
44a6b1b6 | 1221 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1222 | assert(u); |
1223 | ||
a16e1123 | 1224 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1225 | } |
1226 | ||
f2f725e5 | 1227 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1228 | Mount *m = MOUNT(u); |
1229 | ||
1230 | assert(m); | |
1231 | ||
f2f725e5 ZJS |
1232 | if (m->from_proc_self_mountinfo) |
1233 | return false; | |
1234 | ||
1235 | return true; | |
701cc384 LP |
1236 | } |
1237 | ||
e537352b LP |
1238 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1239 | Mount *m = MOUNT(u); | |
9d2f5178 | 1240 | MountResult f; |
e537352b LP |
1241 | |
1242 | assert(m); | |
1243 | assert(pid >= 0); | |
1244 | ||
8c47c732 LP |
1245 | if (pid != m->control_pid) |
1246 | return; | |
e537352b | 1247 | |
e537352b LP |
1248 | m->control_pid = 0; |
1249 | ||
1f0958f6 | 1250 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1251 | f = MOUNT_SUCCESS; |
1252 | else if (code == CLD_EXITED) | |
1253 | f = MOUNT_FAILURE_EXIT_CODE; | |
1254 | else if (code == CLD_KILLED) | |
1255 | f = MOUNT_FAILURE_SIGNAL; | |
1256 | else if (code == CLD_DUMPED) | |
1257 | f = MOUNT_FAILURE_CORE_DUMP; | |
1258 | else | |
1259 | assert_not_reached("Unknown code"); | |
1260 | ||
850b7410 LP |
1261 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1262 | mount_set_reload_result(m, f); | |
1263 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1264 | m->result = f; |
8c47c732 | 1265 | |
a16e1123 | 1266 | if (m->control_command) { |
6ea832a2 | 1267 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1268 | |
a16e1123 LP |
1269 | m->control_command = NULL; |
1270 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1271 | } | |
1272 | ||
f2341e0a LP |
1273 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1274 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1275 | |
006aabbd AJ |
1276 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1277 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1278 | |
1279 | switch (m->state) { | |
1280 | ||
1281 | case MOUNT_MOUNTING: | |
006aabbd | 1282 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1283 | |
006aabbd AJ |
1284 | if (f == MOUNT_SUCCESS) { |
1285 | /* Either /bin/mount has an unexpected definition of success, | |
1286 | * or someone raced us and we lost. */ | |
1287 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1288 | f = MOUNT_FAILURE_PROTOCOL; | |
1289 | } | |
1290 | mount_enter_dead(m, f); | |
1291 | break; | |
1292 | ||
1293 | case MOUNT_MOUNTING_DONE: | |
1294 | mount_enter_mounted(m, f); | |
e537352b LP |
1295 | break; |
1296 | ||
e2f3b44c | 1297 | case MOUNT_REMOUNTING: |
e2f3b44c | 1298 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1299 | case MOUNT_REMOUNTING_SIGKILL: |
1300 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1301 | break; |
1302 | ||
e537352b | 1303 | case MOUNT_UNMOUNTING: |
e537352b | 1304 | |
3cc96856 | 1305 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1306 | |
1307 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1308 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1309 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1310 | |
1311 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1312 | log_unit_debug(u, "Mount still present, trying again."); | |
1313 | m->n_retry_umount++; | |
1314 | mount_enter_unmounting(m); | |
1315 | } else { | |
006aabbd | 1316 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1317 | mount_enter_mounted(m, f); |
1318 | } | |
1319 | } else | |
3cc96856 | 1320 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1321 | |
e537352b | 1322 | break; |
57018361 AJ |
1323 | |
1324 | case MOUNT_UNMOUNTING_SIGKILL: | |
1325 | case MOUNT_UNMOUNTING_SIGTERM: | |
1326 | mount_enter_dead_or_mounted(m, f); | |
1327 | break; | |
e537352b LP |
1328 | |
1329 | default: | |
1330 | assert_not_reached("Uh, control process died at wrong time."); | |
1331 | } | |
c4e2ceae LP |
1332 | |
1333 | /* Notify clients about changed exit status */ | |
1334 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1335 | } |
1336 | ||
718db961 LP |
1337 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1338 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1339 | |
1340 | assert(m); | |
718db961 | 1341 | assert(m->timer_event_source == source); |
e537352b LP |
1342 | |
1343 | switch (m->state) { | |
1344 | ||
1345 | case MOUNT_MOUNTING: | |
1346 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1347 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1348 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1349 | break; |
1350 | ||
1351 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1352 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1353 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1354 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1355 | break; |
1356 | ||
22af0e58 LP |
1357 | case MOUNT_REMOUNTING_SIGTERM: |
1358 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1359 | |
4819ff03 | 1360 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1361 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1362 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1363 | } else { |
22af0e58 LP |
1364 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1365 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1366 | } |
e537352b LP |
1367 | break; |
1368 | ||
22af0e58 LP |
1369 | case MOUNT_REMOUNTING_SIGKILL: |
1370 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1371 | |
22af0e58 LP |
1372 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1373 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1374 | break; | |
1375 | ||
1376 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1377 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1378 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1379 | break; |
1380 | ||
1381 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1382 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1383 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1384 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1385 | } else { |
22af0e58 LP |
1386 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1387 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1388 | } |
e537352b LP |
1389 | break; |
1390 | ||
e537352b | 1391 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1392 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1393 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1394 | break; |
1395 | ||
1396 | default: | |
1397 | assert_not_reached("Timeout at wrong time."); | |
1398 | } | |
718db961 LP |
1399 | |
1400 | return 0; | |
e537352b LP |
1401 | } |
1402 | ||
03b8cfed FB |
1403 | typedef struct { |
1404 | bool is_mounted; | |
1405 | bool just_mounted; | |
1406 | bool just_changed; | |
1407 | } MountSetupFlags; | |
1408 | ||
1409 | static int mount_setup_new_unit( | |
1410 | Unit *u, | |
1411 | const char *what, | |
1412 | const char *where, | |
1413 | const char *options, | |
1414 | const char *fstype, | |
1415 | MountSetupFlags *flags) { | |
1416 | ||
1417 | MountParameters *p; | |
1418 | ||
1419 | assert(u); | |
1420 | assert(flags); | |
1421 | ||
1422 | u->source_path = strdup("/proc/self/mountinfo"); | |
1423 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1424 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1425 | return -ENOMEM; |
1426 | ||
1427 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1428 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1429 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1430 | ||
1431 | p->what = strdup(what); | |
1432 | p->options = strdup(options); | |
1433 | p->fstype = strdup(fstype); | |
1434 | if (!p->what || !p->options || !p->fstype) | |
1435 | return -ENOMEM; | |
1436 | ||
1437 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1438 | const char *target; | |
1439 | int r; | |
1440 | ||
1441 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
35d8c19a | 1442 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1443 | if (r < 0) |
1444 | return r; | |
1445 | ||
35d8c19a | 1446 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1447 | if (r < 0) |
1448 | return r; | |
1449 | } | |
1450 | ||
cfcd4318 | 1451 | unit_add_to_load_queue(u); |
03b8cfed FB |
1452 | flags->is_mounted = true; |
1453 | flags->just_mounted = true; | |
1454 | flags->just_changed = true; | |
1455 | ||
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | static int mount_setup_existing_unit( | |
1460 | Unit *u, | |
1461 | const char *what, | |
1462 | const char *where, | |
1463 | const char *options, | |
1464 | const char *fstype, | |
1465 | MountSetupFlags *flags) { | |
1466 | ||
1467 | MountParameters *p; | |
1468 | bool load_extras = false; | |
1469 | int r1, r2, r3; | |
1470 | ||
1471 | assert(u); | |
1472 | assert(flags); | |
1473 | ||
1474 | if (!MOUNT(u)->where) { | |
1475 | MOUNT(u)->where = strdup(where); | |
1476 | if (!MOUNT(u)->where) | |
1477 | return -ENOMEM; | |
1478 | } | |
1479 | ||
1480 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1481 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1482 | ||
1483 | r1 = free_and_strdup(&p->what, what); | |
1484 | r2 = free_and_strdup(&p->options, options); | |
1485 | r3 = free_and_strdup(&p->fstype, fstype); | |
1486 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1487 | return -ENOMEM; | |
1488 | ||
1489 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1490 | flags->is_mounted = true; | |
65d36b49 | 1491 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1492 | |
1493 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1494 | ||
1495 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1496 | /* _netdev option may have shown up late, or on a | |
1497 | * remount. Add remote-fs dependencies, even though | |
1498 | * local-fs ones may already be there. | |
1499 | * | |
1500 | * Note: due to a current limitation (we don't track | |
1501 | * in the dependency "Set*" objects who created a | |
1502 | * dependency), we can only add deps, never lose them, | |
1503 | * until the next full daemon-reload. */ | |
35d8c19a | 1504 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1505 | load_extras = true; |
1506 | } | |
1507 | ||
1508 | if (u->load_state == UNIT_NOT_FOUND) { | |
1509 | u->load_state = UNIT_LOADED; | |
1510 | u->load_error = 0; | |
1511 | ||
1512 | /* Load in the extras later on, after we | |
1513 | * finished initialization of the unit */ | |
1514 | ||
1515 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1516 | load_extras = true; | |
1517 | flags->just_changed = true; | |
1518 | } | |
1519 | ||
1520 | if (load_extras) | |
1521 | return mount_add_extras(MOUNT(u)); | |
1522 | ||
1523 | return 0; | |
1524 | } | |
1525 | ||
628c89cc | 1526 | static int mount_setup_unit( |
e537352b LP |
1527 | Manager *m, |
1528 | const char *what, | |
1529 | const char *where, | |
1530 | const char *options, | |
1531 | const char *fstype, | |
e537352b | 1532 | bool set_flags) { |
057d9ab8 | 1533 | |
03b8cfed FB |
1534 | _cleanup_free_ char *e = NULL; |
1535 | MountSetupFlags flags; | |
057d9ab8 LP |
1536 | Unit *u; |
1537 | int r; | |
b08d03ff | 1538 | |
f50e0a01 | 1539 | assert(m); |
b08d03ff LP |
1540 | assert(what); |
1541 | assert(where); | |
e537352b LP |
1542 | assert(options); |
1543 | assert(fstype); | |
1544 | ||
e537352b LP |
1545 | /* Ignore API mount points. They should never be referenced in |
1546 | * dependencies ever. */ | |
33ff02c9 | 1547 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1548 | return 0; |
b08d03ff | 1549 | |
8d567588 LP |
1550 | if (streq(fstype, "autofs")) |
1551 | return 0; | |
1552 | ||
4e85aff4 LP |
1553 | /* probably some kind of swap, ignore */ |
1554 | if (!is_path(where)) | |
b08d03ff LP |
1555 | return 0; |
1556 | ||
7410616c LP |
1557 | r = unit_name_from_path(where, ".mount", &e); |
1558 | if (r < 0) | |
1559 | return r; | |
b08d03ff | 1560 | |
7d17cfbc MS |
1561 | u = manager_get_unit(m, e); |
1562 | if (!u) { | |
03b8cfed FB |
1563 | /* First time we see this mount point meaning that it's |
1564 | * not been initiated by a mount unit but rather by the | |
1565 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1566 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1567 | if (r < 0) |
1568 | goto fail; | |
1569 | ||
03b8cfed FB |
1570 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1571 | if (r < 0) | |
1572 | unit_free(u); | |
1573 | } else | |
1574 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1575 | |
03b8cfed | 1576 | if (r < 0) |
e537352b | 1577 | goto fail; |
ff5f34d0 | 1578 | |
6b1dc2bd | 1579 | if (set_flags) { |
03b8cfed FB |
1580 | MOUNT(u)->is_mounted = flags.is_mounted; |
1581 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1582 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1583 | } |
1584 | ||
03b8cfed | 1585 | if (flags.just_changed) |
ff5f34d0 | 1586 | unit_add_to_dbus_queue(u); |
c1e1601e | 1587 | |
b08d03ff | 1588 | return 0; |
b08d03ff | 1589 | fail: |
fc95c359 | 1590 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
b08d03ff LP |
1591 | } |
1592 | ||
ef734fd6 | 1593 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1594 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1595 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1596 | int r = 0; |
b08d03ff LP |
1597 | |
1598 | assert(m); | |
1599 | ||
628c89cc | 1600 | t = mnt_new_table(); |
628c89cc | 1601 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1602 | if (!t || !i) |
628c89cc LP |
1603 | return log_oom(); |
1604 | ||
1605 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1606 | if (r < 0) |
628c89cc | 1607 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1608 | |
5cca8def ZJS |
1609 | r = 0; |
1610 | for (;;) { | |
95b862b0 | 1611 | struct libmnt_fs *fs; |
8d3ae2bd | 1612 | const char *device, *path, *options, *fstype; |
527b7a42 | 1613 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1614 | int k; |
b08d03ff | 1615 | |
628c89cc | 1616 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1617 | if (k == 1) |
1618 | break; | |
628c89cc LP |
1619 | if (k < 0) |
1620 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1621 | |
8d3ae2bd CL |
1622 | device = mnt_fs_get_source(fs); |
1623 | path = mnt_fs_get_target(fs); | |
1624 | options = mnt_fs_get_options(fs); | |
1625 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1626 | |
c0a7f8d3 DM |
1627 | if (!device || !path) |
1628 | continue; | |
1629 | ||
527b7a42 | 1630 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1631 | return log_oom(); |
1632 | ||
527b7a42 | 1633 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1634 | return log_oom(); |
b08d03ff | 1635 | |
485ae697 | 1636 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc LP |
1637 | |
1638 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1639 | if (r == 0 && k < 0) |
60b912f6 | 1640 | r = k; |
b08d03ff LP |
1641 | } |
1642 | ||
e537352b LP |
1643 | return r; |
1644 | } | |
1645 | ||
1646 | static void mount_shutdown(Manager *m) { | |
1647 | assert(m); | |
1648 | ||
718db961 LP |
1649 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1650 | ||
d379d442 KZ |
1651 | mnt_unref_monitor(m->mount_monitor); |
1652 | m->mount_monitor = NULL; | |
b08d03ff LP |
1653 | } |
1654 | ||
7a7821c8 | 1655 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1656 | Mount *m = MOUNT(u); |
7a7821c8 | 1657 | usec_t t; |
68db7a3b ZJS |
1658 | int r; |
1659 | ||
1660 | if (!m->timer_event_source) | |
1661 | return 0; | |
1662 | ||
7a7821c8 | 1663 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1664 | if (r < 0) |
1665 | return r; | |
7a7821c8 LP |
1666 | if (t == USEC_INFINITY) |
1667 | return 0; | |
68db7a3b | 1668 | |
7a7821c8 | 1669 | *timeout = t; |
68db7a3b ZJS |
1670 | return 1; |
1671 | } | |
1672 | ||
04eb582a | 1673 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1674 | Unit *u; |
1675 | int r; | |
1676 | ||
1677 | assert(m); | |
1678 | ||
1679 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1680 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1681 | ||
1682 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1683 | if (!u) { | |
a581e45a | 1684 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1685 | if (r < 0) { |
1686 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1687 | return; | |
1688 | } | |
11222d0f LP |
1689 | } |
1690 | ||
1691 | u->perpetual = true; | |
1692 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1693 | ||
1694 | unit_add_to_load_queue(u); | |
1695 | unit_add_to_dbus_queue(u); | |
1696 | } | |
1697 | ||
1698 | static bool mount_is_mounted(Mount *m) { | |
1699 | assert(m); | |
1700 | ||
1701 | return UNIT(m)->perpetual || m->is_mounted; | |
1702 | } | |
1703 | ||
ba64af90 | 1704 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1705 | int r; |
d379d442 | 1706 | |
b08d03ff LP |
1707 | assert(m); |
1708 | ||
8d3ae2bd CL |
1709 | mnt_init_debug(0); |
1710 | ||
d379d442 KZ |
1711 | if (!m->mount_monitor) { |
1712 | int fd; | |
ef734fd6 | 1713 | |
d379d442 KZ |
1714 | m->mount_monitor = mnt_new_monitor(); |
1715 | if (!m->mount_monitor) { | |
ba64af90 | 1716 | log_oom(); |
718db961 | 1717 | goto fail; |
d379d442 | 1718 | } |
29083707 | 1719 | |
d379d442 | 1720 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1721 | if (r < 0) { |
1722 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1723 | goto fail; |
ba64af90 LP |
1724 | } |
1725 | ||
d379d442 | 1726 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1727 | if (r < 0) { |
1728 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1729 | goto fail; |
ba64af90 | 1730 | } |
90598531 | 1731 | |
d379d442 KZ |
1732 | /* mnt_unref_monitor() will close the fd */ |
1733 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1734 | if (r < 0) { |
1735 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1736 | goto fail; |
ba64af90 | 1737 | } |
befb6d54 | 1738 | |
d379d442 | 1739 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1740 | if (r < 0) { |
1741 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1742 | goto fail; |
ba64af90 | 1743 | } |
befb6d54 | 1744 | |
83231637 | 1745 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1746 | if (r < 0) { |
1747 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1748 | goto fail; |
ba64af90 | 1749 | } |
7dfbe2e3 | 1750 | |
d379d442 | 1751 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1752 | } |
1753 | ||
e62d8c39 ZJS |
1754 | r = mount_load_proc_self_mountinfo(m, false); |
1755 | if (r < 0) | |
b08d03ff LP |
1756 | goto fail; |
1757 | ||
ba64af90 | 1758 | return; |
b08d03ff LP |
1759 | |
1760 | fail: | |
1761 | mount_shutdown(m); | |
5cb5a6ff LP |
1762 | } |
1763 | ||
718db961 | 1764 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1765 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1766 | Manager *m = userdata; |
fcd8b266 LP |
1767 | const char *what; |
1768 | Iterator i; | |
595ed347 | 1769 | Unit *u; |
ef734fd6 LP |
1770 | int r; |
1771 | ||
1772 | assert(m); | |
d379d442 | 1773 | assert(revents & EPOLLIN); |
ef734fd6 | 1774 | |
d379d442 | 1775 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1776 | bool rescan = false; |
befb6d54 | 1777 | |
d379d442 KZ |
1778 | /* Drain all events and verify that the event is valid. |
1779 | * | |
1780 | * Note that libmount also monitors /run/mount mkdir if the | |
1781 | * directory does not exist yet. The mkdir may generate event | |
1782 | * which is irrelevant for us. | |
1783 | * | |
1784 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1785 | do { | |
1786 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1787 | if (r == 0) | |
1788 | rescan = true; | |
1789 | else if (r < 0) | |
5e1ee764 | 1790 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1791 | } while (r == 0); |
1792 | ||
1793 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1794 | if (!rescan) |
1795 | return 0; | |
1796 | } | |
ef734fd6 | 1797 | |
4f0eedb7 ZJS |
1798 | r = mount_load_proc_self_mountinfo(m, true); |
1799 | if (r < 0) { | |
e537352b | 1800 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1801 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1802 | Mount *mount = MOUNT(u); | |
e537352b LP |
1803 | |
1804 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1805 | } | |
1806 | ||
718db961 | 1807 | return 0; |
ef734fd6 LP |
1808 | } |
1809 | ||
1810 | manager_dispatch_load_queue(m); | |
1811 | ||
595ed347 MS |
1812 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1813 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1814 | |
11222d0f | 1815 | if (!mount_is_mounted(mount)) { |
e537352b | 1816 | |
394763f6 LP |
1817 | /* A mount point is not around right now. It |
1818 | * might be gone, or might never have | |
1819 | * existed. */ | |
1820 | ||
1821 | if (mount->from_proc_self_mountinfo && | |
1822 | mount->parameters_proc_self_mountinfo.what) { | |
1823 | ||
1824 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1825 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
394763f6 LP |
1826 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
1827 | log_oom(); /* we don't care too much about OOM here... */ | |
1828 | } | |
fcd8b266 | 1829 | |
ef734fd6 | 1830 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1831 | |
1832 | switch (mount->state) { | |
1833 | ||
1834 | case MOUNT_MOUNTED: | |
aef83136 LP |
1835 | /* This has just been unmounted by |
1836 | * somebody else, follow the state | |
1837 | * change. */ | |
cf6f7f66 | 1838 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1839 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1840 | break; |
1841 | ||
1842 | default: | |
e537352b | 1843 | break; |
e537352b LP |
1844 | } |
1845 | ||
1846 | } else if (mount->just_mounted || mount->just_changed) { | |
1847 | ||
fcd8b266 | 1848 | /* A mount point was added or changed */ |
e537352b LP |
1849 | |
1850 | switch (mount->state) { | |
1851 | ||
1852 | case MOUNT_DEAD: | |
fdf20a31 | 1853 | case MOUNT_FAILED: |
4b58153d LP |
1854 | |
1855 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1856 | * generate a new invocation ID for this implicitly and automatically. */ | |
1857 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1858 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1859 | break; |
1860 | ||
1861 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1862 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1863 | break; |
1864 | ||
1865 | default: | |
1866 | /* Nothing really changed, but let's | |
1867 | * issue an notification call | |
1868 | * nonetheless, in case somebody is | |
1869 | * waiting for this. (e.g. file system | |
1870 | * ro/rw remounts.) */ | |
1871 | mount_set_state(mount, mount->state); | |
1872 | break; | |
1873 | } | |
394763f6 | 1874 | } |
fcd8b266 | 1875 | |
11222d0f | 1876 | if (mount_is_mounted(mount) && |
394763f6 LP |
1877 | mount->from_proc_self_mountinfo && |
1878 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1879 | |
548f6937 | 1880 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
394763f6 LP |
1881 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) |
1882 | log_oom(); | |
e537352b LP |
1883 | } |
1884 | ||
1885 | /* Reset the flags for later calls */ | |
1886 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1887 | } | |
718db961 | 1888 | |
fcd8b266 LP |
1889 | SET_FOREACH(what, gone, i) { |
1890 | if (set_contains(around, what)) | |
1891 | continue; | |
1892 | ||
1893 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1894 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 LP |
1895 | } |
1896 | ||
718db961 | 1897 | return 0; |
e537352b LP |
1898 | } |
1899 | ||
fdf20a31 | 1900 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1901 | Mount *m = MOUNT(u); |
1902 | ||
1903 | assert(m); | |
1904 | ||
fdf20a31 | 1905 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1906 | mount_set_state(m, MOUNT_DEAD); |
1907 | ||
9d2f5178 LP |
1908 | m->result = MOUNT_SUCCESS; |
1909 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1910 | } |
1911 | ||
718db961 | 1912 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1913 | Mount *m = MOUNT(u); |
1914 | ||
1915 | assert(m); | |
1916 | ||
814cc562 | 1917 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1918 | } |
1919 | ||
291d565a LP |
1920 | static int mount_control_pid(Unit *u) { |
1921 | Mount *m = MOUNT(u); | |
1922 | ||
1923 | assert(m); | |
1924 | ||
1925 | return m->control_pid; | |
1926 | } | |
1927 | ||
a16e1123 LP |
1928 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1929 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1930 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1931 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1932 | }; | |
1933 | ||
1934 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1935 | ||
9d2f5178 LP |
1936 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1937 | [MOUNT_SUCCESS] = "success", | |
1938 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1939 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1940 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1941 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1942 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1943 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1944 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1945 | }; |
1946 | ||
1947 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1948 | ||
87f0e418 | 1949 | const UnitVTable mount_vtable = { |
7d17cfbc | 1950 | .object_size = sizeof(Mount), |
718db961 LP |
1951 | .exec_context_offset = offsetof(Mount, exec_context), |
1952 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1953 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1954 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1955 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1956 | |
f975e971 LP |
1957 | .sections = |
1958 | "Unit\0" | |
1959 | "Mount\0" | |
1960 | "Install\0", | |
4ad49000 | 1961 | .private_section = "Mount", |
71645aca | 1962 | |
e537352b LP |
1963 | .init = mount_init, |
1964 | .load = mount_load, | |
034c6ed7 | 1965 | .done = mount_done, |
e537352b | 1966 | |
f50e0a01 LP |
1967 | .coldplug = mount_coldplug, |
1968 | ||
034c6ed7 | 1969 | .dump = mount_dump, |
5cb5a6ff | 1970 | |
e537352b LP |
1971 | .start = mount_start, |
1972 | .stop = mount_stop, | |
1973 | .reload = mount_reload, | |
1974 | ||
8a0867d6 LP |
1975 | .kill = mount_kill, |
1976 | ||
a16e1123 LP |
1977 | .serialize = mount_serialize, |
1978 | .deserialize_item = mount_deserialize_item, | |
1979 | ||
f50e0a01 | 1980 | .active_state = mount_active_state, |
10a94420 | 1981 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1982 | |
f2f725e5 | 1983 | .may_gc = mount_may_gc, |
701cc384 | 1984 | |
e537352b | 1985 | .sigchld_event = mount_sigchld_event, |
e537352b | 1986 | |
fdf20a31 | 1987 | .reset_failed = mount_reset_failed, |
291d565a LP |
1988 | |
1989 | .control_pid = mount_control_pid, | |
5632e374 | 1990 | |
718db961 | 1991 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1992 | .bus_set_property = bus_mount_set_property, |
1993 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1994 | |
68db7a3b ZJS |
1995 | .get_timeout = mount_get_timeout, |
1996 | ||
0e252f6b TG |
1997 | .can_transient = true, |
1998 | ||
04eb582a | 1999 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2000 | .enumerate = mount_enumerate, |
c6918296 MS |
2001 | .shutdown = mount_shutdown, |
2002 | ||
2003 | .status_message_formats = { | |
2004 | .starting_stopping = { | |
2005 | [0] = "Mounting %s...", | |
2006 | [1] = "Unmounting %s...", | |
2007 | }, | |
2008 | .finished_start_job = { | |
2009 | [JOB_DONE] = "Mounted %s.", | |
2010 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2011 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2012 | }, | |
2013 | .finished_stop_job = { | |
2014 | [JOB_DONE] = "Unmounted %s.", | |
2015 | [JOB_FAILED] = "Failed unmounting %s.", | |
2016 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2017 | }, | |
2018 | }, | |
5cb5a6ff | 2019 | }; |