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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 | ||
7121cbcf LP |
71 | static bool mount_is_network(const MountParameters *p) { |
72 | assert(p); | |
73 | ||
74 | if (fstab_test_option(p->options, "_netdev\0")) | |
fc676b00 ZJS |
75 | return true; |
76 | ||
7121cbcf | 77 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
78 | return true; |
79 | ||
80 | return false; | |
81 | } | |
82 | ||
d3bd0986 MK |
83 | static bool mount_is_loop(const MountParameters *p) { |
84 | assert(p); | |
85 | ||
86 | if (fstab_test_option(p->options, "loop\0")) | |
87 | return true; | |
88 | ||
89 | return false; | |
90 | } | |
91 | ||
e6a7b9f4 | 92 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
93 | assert(p); |
94 | ||
d15d0333 | 95 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
96 | return true; |
97 | ||
d15d0333 | 98 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
99 | return true; |
100 | ||
101 | return false; | |
102 | } | |
103 | ||
e6a7b9f4 | 104 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
105 | assert(p); |
106 | ||
d15d0333 | 107 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
108 | } |
109 | ||
2b14df4a FB |
110 | static bool mount_is_automount(const MountParameters *p) { |
111 | assert(p); | |
112 | ||
113 | return fstab_test_option(p->options, | |
114 | "comment=systemd.automount\0" | |
115 | "x-systemd.automount\0"); | |
116 | } | |
117 | ||
ebc8968b FB |
118 | static bool mount_is_bound_to_device(const Mount *m) { |
119 | const MountParameters *p; | |
120 | ||
121 | if (m->from_fragment) | |
122 | return true; | |
123 | ||
124 | p = &m->parameters_proc_self_mountinfo; | |
125 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
126 | } | |
127 | ||
06e457b1 | 128 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
129 | assert(p); |
130 | ||
06e457b1 LP |
131 | /* Quotas are not enabled on network filesystems, but we want them, for example, on storage connected via |
132 | * iscsi. We hence don't use mount_is_network() here, as that would also return true for _netdev devices. */ | |
11041c84 | 133 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
134 | return false; |
135 | ||
136 | if (mount_is_bind(p)) | |
137 | return false; | |
138 | ||
d15d0333 ZJS |
139 | return fstab_test_option(p->options, |
140 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
141 | } |
142 | ||
a16e1123 LP |
143 | static void mount_init(Unit *u) { |
144 | Mount *m = MOUNT(u); | |
5cb5a6ff | 145 | |
a16e1123 | 146 | assert(u); |
ac155bb8 | 147 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 148 | |
1f19a534 | 149 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
150 | |
151 | m->exec_context.std_output = u->manager->default_std_output; | |
152 | m->exec_context.std_error = u->manager->default_std_error; | |
153 | ||
3e5235b0 LP |
154 | m->directory_mode = 0755; |
155 | ||
f00929ad DJL |
156 | /* We need to make sure that /usr/bin/mount is always called |
157 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
158 | * side doesn't send us another mount request while we are |
159 | * already trying to comply its last one. */ | |
74922904 | 160 | m->exec_context.same_pgrp = true; |
8d567588 | 161 | |
a16e1123 | 162 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 163 | |
5bcb0f2b | 164 | u->ignore_on_isolate = true; |
8d567588 LP |
165 | } |
166 | ||
36c16a7c | 167 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
168 | int r; |
169 | ||
170 | assert(m); | |
171 | ||
718db961 | 172 | if (m->timer_event_source) { |
36c16a7c | 173 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
174 | if (r < 0) |
175 | return r; | |
176 | ||
177 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
178 | } | |
179 | ||
36c16a7c LP |
180 | if (usec == USEC_INFINITY) |
181 | return 0; | |
182 | ||
7dfbe2e3 | 183 | r = sd_event_add_time( |
6a0f1f6d LP |
184 | UNIT(m)->manager->event, |
185 | &m->timer_event_source, | |
186 | CLOCK_MONOTONIC, | |
36c16a7c | 187 | usec, 0, |
6a0f1f6d | 188 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
189 | if (r < 0) |
190 | return r; | |
191 | ||
192 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
193 | ||
194 | return 0; | |
718db961 LP |
195 | } |
196 | ||
a16e1123 | 197 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
198 | assert(m); |
199 | ||
200 | if (m->control_pid <= 0) | |
201 | return; | |
202 | ||
203 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
204 | m->control_pid = 0; | |
205 | } | |
206 | ||
e537352b LP |
207 | static void mount_parameters_done(MountParameters *p) { |
208 | assert(p); | |
209 | ||
a26592cf LP |
210 | p->what = mfree(p->what); |
211 | p->options = mfree(p->options); | |
212 | p->fstype = mfree(p->fstype); | |
e537352b LP |
213 | } |
214 | ||
87f0e418 | 215 | static void mount_done(Unit *u) { |
ef734fd6 | 216 | Mount *m = MOUNT(u); |
034c6ed7 | 217 | |
ef734fd6 | 218 | assert(m); |
034c6ed7 | 219 | |
a1e58e8e | 220 | m->where = mfree(m->where); |
f50e0a01 | 221 | |
e537352b LP |
222 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
223 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 224 | |
e8a565cb | 225 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
226 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
227 | m->control_command = NULL; | |
f50e0a01 | 228 | |
29206d46 LP |
229 | dynamic_creds_unref(&m->dynamic_creds); |
230 | ||
a16e1123 | 231 | mount_unwatch_control_pid(m); |
f50e0a01 | 232 | |
718db961 | 233 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
234 | } |
235 | ||
44a6b1b6 | 236 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
237 | assert(m); |
238 | ||
239 | if (m->from_fragment) | |
240 | return &m->parameters_fragment; | |
cb39ed3f LP |
241 | |
242 | return NULL; | |
243 | } | |
244 | ||
44a6b1b6 | 245 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
246 | assert(m); |
247 | ||
248 | if (m->from_proc_self_mountinfo) | |
249 | return &m->parameters_proc_self_mountinfo; | |
250 | ||
6b1dc2bd | 251 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
252 | } |
253 | ||
eef85c4a | 254 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 255 | MountParameters *pm; |
ac155bb8 | 256 | Unit *other; |
a57f7e2c LP |
257 | Iterator i; |
258 | Set *s; | |
b08d03ff LP |
259 | int r; |
260 | ||
6e2ef85b | 261 | assert(m); |
b08d03ff | 262 | |
a57f7e2c | 263 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
264 | _cleanup_free_ char *parent = NULL; |
265 | ||
266 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
267 | |
268 | parent = dirname_malloc(m->where); | |
269 | if (!parent) | |
270 | return -ENOMEM; | |
01f78473 | 271 | |
eef85c4a | 272 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 273 | if (r < 0) |
01f78473 | 274 | return r; |
4f0eedb7 | 275 | } |
01f78473 | 276 | |
eef85c4a LP |
277 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
278 | * or a loop mount) to be available. */ | |
a57f7e2c | 279 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
280 | if (pm && pm->what && |
281 | path_is_absolute(pm->what) && | |
d3bd0986 | 282 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 283 | |
eef85c4a | 284 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 285 | if (r < 0) |
6e2ef85b | 286 | return r; |
4f0eedb7 | 287 | } |
b08d03ff | 288 | |
eef85c4a | 289 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
290 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
291 | SET_FOREACH(other, s, i) { | |
b08d03ff | 292 | |
a57f7e2c LP |
293 | if (other->load_state != UNIT_LOADED) |
294 | continue; | |
b08d03ff | 295 | |
a57f7e2c LP |
296 | if (other == UNIT(m)) |
297 | continue; | |
b08d03ff | 298 | |
eef85c4a | 299 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 300 | if (r < 0) |
6e2ef85b | 301 | return r; |
b08d03ff | 302 | |
a57f7e2c LP |
303 | if (UNIT(m)->fragment_path) { |
304 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 305 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
306 | if (r < 0) |
307 | return r; | |
308 | } | |
7c8fa05c LP |
309 | } |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
eef85c4a | 314 | static int mount_add_device_dependencies(Mount *m) { |
32a5f8fe | 315 | bool device_wants_mount; |
eef85c4a LP |
316 | UnitDependencyMask mask; |
317 | MountParameters *p; | |
ebc8968b | 318 | UnitDependency dep; |
9fff8a1f | 319 | int r; |
173a8d04 LP |
320 | |
321 | assert(m); | |
322 | ||
06e97888 | 323 | p = get_mount_parameters(m); |
6b1dc2bd | 324 | if (!p) |
173a8d04 LP |
325 | return 0; |
326 | ||
9fff8a1f | 327 | if (!p->what) |
173a8d04 | 328 | return 0; |
5c78d8e2 | 329 | |
dd144c63 LP |
330 | if (mount_is_bind(p)) |
331 | return 0; | |
332 | ||
333 | if (!is_device_path(p->what)) | |
334 | return 0; | |
335 | ||
7ba2711d LP |
336 | /* /dev/root is a really weird thing, it's not a real device, |
337 | * but just a path the kernel exports for the root file system | |
338 | * specified on the kernel command line. Ignore it here. */ | |
339 | if (path_equal(p->what, "/dev/root")) | |
340 | return 0; | |
341 | ||
dd144c63 LP |
342 | if (path_equal(m->where, "/")) |
343 | return 0; | |
344 | ||
32a5f8fe LP |
345 | device_wants_mount = |
346 | mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager); | |
5073f89f | 347 | |
ebc8968b FB |
348 | /* Mount units from /proc/self/mountinfo are not bound to devices |
349 | * by default since they're subject to races when devices are | |
350 | * unplugged. But the user can still force this dep with an | |
351 | * appropriate option (or udev property) so the mount units are | |
352 | * automatically stopped when the device disappears suddenly. */ | |
353 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
354 | ||
eef85c4a LP |
355 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
356 | ||
357 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
358 | if (r < 0) |
359 | return r; | |
9fff8a1f | 360 | |
9fff8a1f | 361 | return 0; |
173a8d04 LP |
362 | } |
363 | ||
eef85c4a LP |
364 | static int mount_add_quota_dependencies(Mount *m) { |
365 | UnitDependencyMask mask; | |
6b1dc2bd | 366 | MountParameters *p; |
eef85c4a | 367 | int r; |
6b1dc2bd LP |
368 | |
369 | assert(m); | |
370 | ||
463d0d15 | 371 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
372 | return 0; |
373 | ||
374 | p = get_mount_parameters_fragment(m); | |
375 | if (!p) | |
376 | return 0; | |
377 | ||
06e457b1 | 378 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
379 | return 0; |
380 | ||
eef85c4a LP |
381 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
382 | ||
5a724170 | 383 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
384 | if (r < 0) |
385 | return r; | |
386 | ||
5a724170 | 387 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
388 | if (r < 0) |
389 | return r; | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
ad2706db | 394 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 395 | MountParameters *p; |
ad2706db | 396 | assert(m); |
88ac30a1 | 397 | |
ad2706db LP |
398 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
399 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
400 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
401 | ||
402 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
403 | return true; | |
404 | ||
405 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
406 | "/", | |
407 | "/usr")) | |
408 | return true; | |
88ac30a1 | 409 | |
ad2706db LP |
410 | if (PATH_STARTSWITH_SET(m->where, |
411 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
412 | "/proc", /* All of this is API VFS */ | |
413 | "/sys", /* … dito … */ | |
414 | "/dev")) /* … dito … */ | |
415 | return true; | |
416 | ||
417 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 418 | p = get_mount_parameters(m); |
ad2706db LP |
419 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
420 | return true; | |
88ac30a1 | 421 | |
ad2706db | 422 | return false; |
88ac30a1 TG |
423 | } |
424 | ||
2edd4434 | 425 | static int mount_add_default_dependencies(Mount *m) { |
d54bab90 | 426 | const char *after, *before; |
eef85c4a | 427 | UnitDependencyMask mask; |
9ddc4a26 | 428 | MountParameters *p; |
d54bab90 | 429 | int r; |
2edd4434 LP |
430 | |
431 | assert(m); | |
432 | ||
4c9ea260 LP |
433 | if (!UNIT(m)->default_dependencies) |
434 | return 0; | |
435 | ||
ad2706db LP |
436 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
437 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
438 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
439 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 440 | return 0; |
2edd4434 | 441 | |
874d3404 LP |
442 | p = get_mount_parameters(m); |
443 | if (!p) | |
6b1dc2bd LP |
444 | return 0; |
445 | ||
eef85c4a LP |
446 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
447 | ||
e8d2f6cd | 448 | if (mount_is_network(p)) { |
ea0ec5ce LP |
449 | /* We order ourselves after network.target. This is |
450 | * primarily useful at shutdown: services that take | |
451 | * down the network should order themselves before | |
452 | * network.target, so that they are shut down only | |
453 | * after this mount unit is stopped. */ | |
6b1dc2bd | 454 | |
35d8c19a | 455 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
456 | if (r < 0) |
457 | return r; | |
a63a5c46 | 458 | |
ea0ec5ce LP |
459 | /* We pull in network-online.target, and order |
460 | * ourselves after it. This is useful at start-up to | |
461 | * actively pull in tools that want to be started | |
462 | * before we start mounting network file systems, and | |
463 | * whose purpose it is to delay this until the network | |
464 | * is "up". */ | |
465 | ||
5a724170 | 466 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
467 | if (r < 0) |
468 | return r; | |
ea0ec5ce LP |
469 | |
470 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
d54bab90 LP |
471 | before = SPECIAL_REMOTE_FS_TARGET; |
472 | } else { | |
ea0ec5ce | 473 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
474 | before = SPECIAL_LOCAL_FS_TARGET; |
475 | } | |
476 | ||
477 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, true, mask); | |
478 | if (r < 0) | |
479 | return r; | |
ea0ec5ce | 480 | |
35d8c19a | 481 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
482 | if (r < 0) |
483 | return r; | |
e8d2f6cd | 484 | |
5a724170 | 485 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
486 | if (r < 0) |
487 | return r; | |
2edd4434 | 488 | |
3e3852b3 | 489 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 490 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 491 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
492 | if (r < 0) |
493 | return r; | |
494 | } | |
495 | ||
2edd4434 LP |
496 | return 0; |
497 | } | |
498 | ||
8d567588 | 499 | static int mount_verify(Mount *m) { |
a57f7e2c | 500 | _cleanup_free_ char *e = NULL; |
b294b79f | 501 | MountParameters *p; |
7410616c | 502 | int r; |
a57f7e2c | 503 | |
8d567588 LP |
504 | assert(m); |
505 | ||
1124fe6f | 506 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
507 | return 0; |
508 | ||
1df96fcb | 509 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
510 | return -ENOENT; |
511 | ||
7410616c LP |
512 | r = unit_name_from_path(m->where, ".mount", &e); |
513 | if (r < 0) | |
f2341e0a | 514 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 515 | |
7410616c | 516 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 517 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 518 | return -ENOEXEC; |
8d567588 LP |
519 | } |
520 | ||
33ff02c9 | 521 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 522 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 523 | return -ENOEXEC; |
33ff02c9 LP |
524 | } |
525 | ||
b294b79f MO |
526 | p = get_mount_parameters_fragment(m); |
527 | if (p && !p->what) { | |
f2341e0a | 528 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 529 | return -ENOEXEC; |
4e85aff4 LP |
530 | } |
531 | ||
4819ff03 | 532 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 533 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 534 | return -ENOEXEC; |
4d0e5dbd LP |
535 | } |
536 | ||
8d567588 LP |
537 | return 0; |
538 | } | |
539 | ||
1a4ac875 MS |
540 | static int mount_add_extras(Mount *m) { |
541 | Unit *u = UNIT(m); | |
e537352b LP |
542 | int r; |
543 | ||
e821075a LP |
544 | assert(m); |
545 | ||
1f736476 LP |
546 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
547 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
548 | * to run with an already set up unit. */ | |
549 | ||
e821075a | 550 | if (u->fragment_path) |
1a4ac875 | 551 | m->from_fragment = true; |
e537352b | 552 | |
1a4ac875 | 553 | if (!m->where) { |
7410616c LP |
554 | r = unit_name_to_path(u->id, &m->where); |
555 | if (r < 0) | |
556 | return r; | |
1a4ac875 | 557 | } |
a16e1123 | 558 | |
858d36c1 | 559 | path_simplify(m->where, false); |
e537352b | 560 | |
e821075a | 561 | if (!u->description) { |
1a4ac875 MS |
562 | r = unit_set_description(u, m->where); |
563 | if (r < 0) | |
173a8d04 | 564 | return r; |
1a4ac875 | 565 | } |
6e2ef85b | 566 | |
eef85c4a | 567 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
568 | if (r < 0) |
569 | return r; | |
6e2ef85b | 570 | |
eef85c4a | 571 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
572 | if (r < 0) |
573 | return r; | |
6e2ef85b | 574 | |
eef85c4a | 575 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
576 | if (r < 0) |
577 | return r; | |
e537352b | 578 | |
598459ce LP |
579 | r = unit_patch_contexts(u); |
580 | if (r < 0) | |
581 | return r; | |
4e67ddd6 | 582 | |
598459ce | 583 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
584 | if (r < 0) |
585 | return r; | |
586 | ||
d79200e2 | 587 | r = unit_set_default_slice(u); |
1a4ac875 MS |
588 | if (r < 0) |
589 | return r; | |
590 | ||
4c9ea260 LP |
591 | r = mount_add_default_dependencies(m); |
592 | if (r < 0) | |
593 | return r; | |
598459ce | 594 | |
1a4ac875 MS |
595 | return 0; |
596 | } | |
597 | ||
11222d0f LP |
598 | static int mount_load_root_mount(Unit *u) { |
599 | assert(u); | |
600 | ||
601 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
602 | return 0; | |
603 | ||
604 | u->perpetual = true; | |
605 | u->default_dependencies = false; | |
606 | ||
607 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
608 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
609 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
610 | ||
611 | if (!u->description) | |
612 | u->description = strdup("Root Mount"); | |
613 | ||
614 | return 1; | |
615 | } | |
616 | ||
1a4ac875 MS |
617 | static int mount_load(Unit *u) { |
618 | Mount *m = MOUNT(u); | |
780ae022 | 619 | int r, q, w; |
1a4ac875 MS |
620 | |
621 | assert(u); | |
622 | assert(u->load_state == UNIT_STUB); | |
623 | ||
11222d0f | 624 | r = mount_load_root_mount(u); |
11222d0f LP |
625 | |
626 | if (m->from_proc_self_mountinfo || u->perpetual) | |
780ae022 | 627 | q = unit_load_fragment_and_dropin_optional(u); |
8eba616f | 628 | else |
780ae022 LP |
629 | q = unit_load_fragment_and_dropin(u); |
630 | ||
631 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
632 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
633 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
634 | * 'slice' field for a unit once it is active. */ | |
635 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
636 | w = mount_add_extras(m); | |
637 | else | |
638 | w = 0; | |
639 | ||
1a4ac875 MS |
640 | if (r < 0) |
641 | return r; | |
780ae022 LP |
642 | if (q < 0) |
643 | return q; | |
644 | if (w < 0) | |
645 | return w; | |
e537352b | 646 | |
8d567588 | 647 | return mount_verify(m); |
e537352b LP |
648 | } |
649 | ||
650 | static void mount_set_state(Mount *m, MountState state) { | |
651 | MountState old_state; | |
652 | assert(m); | |
653 | ||
6fcbec6f LP |
654 | if (m->state != state) |
655 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
656 | ||
e537352b LP |
657 | old_state = m->state; |
658 | m->state = state; | |
659 | ||
c634f3d2 | 660 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 661 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 662 | mount_unwatch_control_pid(m); |
e537352b | 663 | m->control_command = NULL; |
a16e1123 | 664 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
665 | } |
666 | ||
667 | if (state != old_state) | |
f2341e0a | 668 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 669 | |
2ad2e41a LP |
670 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
671 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
672 | } |
673 | ||
be847e82 | 674 | static int mount_coldplug(Unit *u) { |
e537352b | 675 | Mount *m = MOUNT(u); |
a16e1123 LP |
676 | MountState new_state = MOUNT_DEAD; |
677 | int r; | |
e537352b LP |
678 | |
679 | assert(m); | |
680 | assert(m->state == MOUNT_DEAD); | |
681 | ||
a16e1123 LP |
682 | if (m->deserialized_state != m->state) |
683 | new_state = m->deserialized_state; | |
684 | else if (m->from_proc_self_mountinfo) | |
685 | new_state = MOUNT_MOUNTED; | |
e537352b | 686 | |
5bcb0f2b LP |
687 | if (new_state == m->state) |
688 | return 0; | |
e537352b | 689 | |
c386f588 LP |
690 | if (m->control_pid > 0 && |
691 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 692 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
693 | |
694 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
695 | if (r < 0) | |
696 | return r; | |
e537352b | 697 | |
36c16a7c | 698 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
699 | if (r < 0) |
700 | return r; | |
a16e1123 | 701 | } |
e537352b | 702 | |
e8a565cb | 703 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 704 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
705 | (void) unit_setup_exec_runtime(u); |
706 | } | |
29206d46 | 707 | |
5bcb0f2b | 708 | mount_set_state(m, new_state); |
e537352b | 709 | return 0; |
e537352b LP |
710 | } |
711 | ||
712 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 713 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
714 | Mount *m = MOUNT(u); |
715 | MountParameters *p; | |
716 | ||
717 | assert(m); | |
718 | assert(f); | |
719 | ||
cb39ed3f | 720 | p = get_mount_parameters(m); |
e537352b LP |
721 | |
722 | fprintf(f, | |
723 | "%sMount State: %s\n" | |
81a5c6d0 | 724 | "%sResult: %s\n" |
e537352b LP |
725 | "%sWhere: %s\n" |
726 | "%sWhat: %s\n" | |
727 | "%sFile System Type: %s\n" | |
728 | "%sOptions: %s\n" | |
e537352b LP |
729 | "%sFrom /proc/self/mountinfo: %s\n" |
730 | "%sFrom fragment: %s\n" | |
ad2706db | 731 | "%sExtrinsic: %s\n" |
e520950a | 732 | "%sDirectoryMode: %04o\n" |
49915de2 | 733 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 734 | "%sLazyUnmount: %s\n" |
91899792 YW |
735 | "%sForceUnmount: %s\n" |
736 | "%sTimoutSec: %s\n", | |
a16e1123 | 737 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 738 | prefix, mount_result_to_string(m->result), |
e537352b | 739 | prefix, m->where, |
1e4fc9b1 HH |
740 | prefix, p ? strna(p->what) : "n/a", |
741 | prefix, p ? strna(p->fstype) : "n/a", | |
742 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
743 | prefix, yes_no(m->from_proc_self_mountinfo), |
744 | prefix, yes_no(m->from_fragment), | |
ad2706db | 745 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 746 | prefix, m->directory_mode, |
49915de2 | 747 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 748 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
749 | prefix, yes_no(m->force_unmount), |
750 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
751 | |
752 | if (m->control_pid > 0) | |
753 | fprintf(f, | |
ccd06097 ZJS |
754 | "%sControl PID: "PID_FMT"\n", |
755 | prefix, m->control_pid); | |
e537352b LP |
756 | |
757 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 758 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 759 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
760 | } |
761 | ||
a16e1123 | 762 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 763 | |
b9c04eaf | 764 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
765 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
766 | .stdin_fd = -1, | |
767 | .stdout_fd = -1, | |
768 | .stderr_fd = -1, | |
769 | .exec_fd = -1, | |
9fa95f85 | 770 | }; |
3c7416b6 LP |
771 | pid_t pid; |
772 | int r; | |
a16e1123 LP |
773 | |
774 | assert(m); | |
775 | assert(c); | |
776 | assert(_pid); | |
777 | ||
3c7416b6 | 778 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
779 | if (r < 0) |
780 | return r; | |
781 | ||
36c16a7c | 782 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 783 | if (r < 0) |
36c16a7c | 784 | return r; |
a16e1123 | 785 | |
1ad6e8b3 LP |
786 | r = unit_set_exec_params(UNIT(m), &exec_params); |
787 | if (r < 0) | |
788 | return r; | |
9fa95f85 | 789 | |
f2341e0a LP |
790 | r = exec_spawn(UNIT(m), |
791 | c, | |
4ad49000 | 792 | &m->exec_context, |
9fa95f85 | 793 | &exec_params, |
613b411c | 794 | m->exec_runtime, |
29206d46 | 795 | &m->dynamic_creds, |
4ad49000 LP |
796 | &pid); |
797 | if (r < 0) | |
36c16a7c | 798 | return r; |
a16e1123 | 799 | |
4ad49000 LP |
800 | r = unit_watch_pid(UNIT(m), pid); |
801 | if (r < 0) | |
a16e1123 | 802 | /* FIXME: we need to do something here */ |
36c16a7c | 803 | return r; |
a16e1123 LP |
804 | |
805 | *_pid = pid; | |
806 | ||
807 | return 0; | |
a16e1123 LP |
808 | } |
809 | ||
9d2f5178 | 810 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
811 | assert(m); |
812 | ||
a0fef983 | 813 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 814 | m->result = f; |
e537352b | 815 | |
aac99f30 | 816 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
29206d46 LP |
817 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
818 | ||
e8a565cb | 819 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 820 | |
3536f49e | 821 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 822 | |
00d9ef85 LP |
823 | unit_unref_uid_gid(UNIT(m), true); |
824 | ||
29206d46 | 825 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
826 | } |
827 | ||
9d2f5178 | 828 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
829 | assert(m); |
830 | ||
a0fef983 | 831 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 832 | m->result = f; |
80876c20 LP |
833 | |
834 | mount_set_state(m, MOUNT_MOUNTED); | |
835 | } | |
836 | ||
22af0e58 LP |
837 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
838 | assert(m); | |
839 | ||
840 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
841 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
842 | * ultimately we just mirror the kernel's internal state on this. */ | |
843 | ||
844 | if (m->from_proc_self_mountinfo) | |
845 | mount_enter_mounted(m, f); | |
846 | else | |
847 | mount_enter_dead(m, f); | |
848 | } | |
849 | ||
850 | static int state_to_kill_operation(MountState state) { | |
851 | switch (state) { | |
852 | ||
853 | case MOUNT_REMOUNTING_SIGTERM: | |
854 | case MOUNT_UNMOUNTING_SIGTERM: | |
855 | return KILL_TERMINATE; | |
856 | ||
857 | case MOUNT_REMOUNTING_SIGKILL: | |
858 | case MOUNT_UNMOUNTING_SIGKILL: | |
859 | return KILL_KILL; | |
860 | ||
861 | default: | |
862 | return _KILL_OPERATION_INVALID; | |
863 | } | |
864 | } | |
865 | ||
9d2f5178 | 866 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
867 | int r; |
868 | ||
869 | assert(m); | |
870 | ||
a0fef983 | 871 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 872 | m->result = f; |
e537352b | 873 | |
cd2086fe LP |
874 | r = unit_kill_context( |
875 | UNIT(m), | |
876 | &m->kill_context, | |
22af0e58 | 877 | state_to_kill_operation(state), |
cd2086fe LP |
878 | -1, |
879 | m->control_pid, | |
880 | false); | |
881 | if (r < 0) | |
882 | goto fail; | |
e537352b | 883 | |
cd2086fe | 884 | if (r > 0) { |
36c16a7c | 885 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 886 | if (r < 0) |
80876c20 | 887 | goto fail; |
e537352b | 888 | |
80876c20 | 889 | mount_set_state(m, state); |
22af0e58 | 890 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 891 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 892 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 893 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 894 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 895 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 896 | else |
22af0e58 | 897 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
898 | |
899 | return; | |
900 | ||
901 | fail: | |
f2341e0a | 902 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 903 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
904 | } |
905 | ||
9d2f5178 | 906 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
907 | int r; |
908 | ||
909 | assert(m); | |
910 | ||
7d54a03a LP |
911 | /* Start counting our attempts */ |
912 | if (!IN_SET(m->state, | |
913 | MOUNT_UNMOUNTING, | |
914 | MOUNT_UNMOUNTING_SIGTERM, | |
915 | MOUNT_UNMOUNTING_SIGKILL)) | |
916 | m->n_retry_umount = 0; | |
917 | ||
a16e1123 LP |
918 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
919 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 920 | |
83897d54 | 921 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
922 | if (r >= 0 && m->lazy_unmount) |
923 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
924 | if (r >= 0 && m->force_unmount) |
925 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 926 | if (r < 0) |
e537352b LP |
927 | goto fail; |
928 | ||
a16e1123 | 929 | mount_unwatch_control_pid(m); |
5e94833f | 930 | |
7d54a03a LP |
931 | r = mount_spawn(m, m->control_command, &m->control_pid); |
932 | if (r < 0) | |
e537352b LP |
933 | goto fail; |
934 | ||
935 | mount_set_state(m, MOUNT_UNMOUNTING); | |
936 | ||
937 | return; | |
938 | ||
939 | fail: | |
f2341e0a | 940 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 941 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
942 | } |
943 | ||
8d567588 | 944 | static void mount_enter_mounting(Mount *m) { |
e537352b | 945 | int r; |
cb39ed3f | 946 | MountParameters *p; |
e537352b LP |
947 | |
948 | assert(m); | |
949 | ||
25cd4964 | 950 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
951 | if (r < 0) |
952 | goto fail; | |
953 | ||
954 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 955 | |
f2341e0a | 956 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
a4634b21 LP |
957 | unit_warn_leftover_processes(UNIT(m)); |
958 | ||
959 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
960 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
961 | ||
cb39ed3f | 962 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 963 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 964 | if (p && mount_is_bind(p)) |
f2341e0a | 965 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 966 | |
b294b79f | 967 | if (p) { |
17a1c597 ZJS |
968 | _cleanup_free_ char *opts = NULL; |
969 | ||
b294b79f | 970 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
971 | if (r < 0) |
972 | goto fail; | |
973 | ||
b294b79f | 974 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
975 | if (r >= 0 && m->sloppy_options) |
976 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
977 | if (r >= 0 && p->fstype) |
978 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 979 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 980 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 981 | } else |
e537352b | 982 | r = -ENOENT; |
e537352b LP |
983 | if (r < 0) |
984 | goto fail; | |
985 | ||
a16e1123 | 986 | mount_unwatch_control_pid(m); |
5e94833f | 987 | |
257f1d8e LP |
988 | r = mount_spawn(m, m->control_command, &m->control_pid); |
989 | if (r < 0) | |
e537352b LP |
990 | goto fail; |
991 | ||
992 | mount_set_state(m, MOUNT_MOUNTING); | |
993 | ||
994 | return; | |
995 | ||
996 | fail: | |
f2341e0a | 997 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 998 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
999 | } |
1000 | ||
850b7410 LP |
1001 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1002 | assert(m); | |
1003 | ||
1004 | /* Only store the first error we encounter */ | |
1005 | if (m->reload_result != MOUNT_SUCCESS) | |
1006 | return; | |
1007 | ||
1008 | m->reload_result = result; | |
1009 | } | |
1010 | ||
9d2f5178 | 1011 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1012 | int r; |
b294b79f | 1013 | MountParameters *p; |
e537352b LP |
1014 | |
1015 | assert(m); | |
1016 | ||
850b7410 LP |
1017 | /* Reset reload result when we are about to start a new remount operation */ |
1018 | m->reload_result = MOUNT_SUCCESS; | |
1019 | ||
a16e1123 LP |
1020 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1021 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1022 | |
b294b79f MO |
1023 | p = get_mount_parameters_fragment(m); |
1024 | if (p) { | |
e537352b LP |
1025 | const char *o; |
1026 | ||
b294b79f MO |
1027 | if (p->options) |
1028 | o = strjoina("remount,", p->options); | |
718db961 | 1029 | else |
e537352b LP |
1030 | o = "remount"; |
1031 | ||
f00929ad | 1032 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1033 | p->what, m->where, |
e86b3761 | 1034 | "-o", o, NULL); |
e86b3761 ZJS |
1035 | if (r >= 0 && m->sloppy_options) |
1036 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1037 | if (r >= 0 && p->fstype) |
1038 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1039 | } else |
e537352b | 1040 | r = -ENOENT; |
60b912f6 | 1041 | if (r < 0) |
e537352b | 1042 | goto fail; |
e537352b | 1043 | |
a16e1123 | 1044 | mount_unwatch_control_pid(m); |
5e94833f | 1045 | |
718db961 LP |
1046 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1047 | if (r < 0) | |
e537352b LP |
1048 | goto fail; |
1049 | ||
1050 | mount_set_state(m, MOUNT_REMOUNTING); | |
1051 | ||
1052 | return; | |
1053 | ||
1054 | fail: | |
f2341e0a | 1055 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1056 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1057 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1058 | } |
1059 | ||
1060 | static int mount_start(Unit *u) { | |
1061 | Mount *m = MOUNT(u); | |
07299350 | 1062 | int r; |
e537352b LP |
1063 | |
1064 | assert(m); | |
1065 | ||
1066 | /* We cannot fulfill this request right now, try again later | |
1067 | * please! */ | |
f2aed307 LP |
1068 | if (IN_SET(m->state, |
1069 | MOUNT_UNMOUNTING, | |
1070 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1071 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1072 | return -EAGAIN; |
1073 | ||
1074 | /* Already on it! */ | |
60b912f6 | 1075 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1076 | return 0; |
1077 | ||
f2aed307 | 1078 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1079 | |
07299350 LP |
1080 | r = unit_start_limit_test(u); |
1081 | if (r < 0) { | |
1082 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1083 | return r; | |
1084 | } | |
1085 | ||
4b58153d LP |
1086 | r = unit_acquire_invocation_id(u); |
1087 | if (r < 0) | |
1088 | return r; | |
1089 | ||
9d2f5178 LP |
1090 | m->result = MOUNT_SUCCESS; |
1091 | m->reload_result = MOUNT_SUCCESS; | |
6a1d4d9f | 1092 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
3c7416b6 LP |
1093 | |
1094 | u->reset_accounting = true; | |
9d2f5178 | 1095 | |
8d567588 | 1096 | mount_enter_mounting(m); |
82a2b6bb | 1097 | return 1; |
e537352b LP |
1098 | } |
1099 | ||
1100 | static int mount_stop(Unit *u) { | |
1101 | Mount *m = MOUNT(u); | |
1102 | ||
1103 | assert(m); | |
1104 | ||
22af0e58 LP |
1105 | switch (m->state) { |
1106 | ||
1107 | case MOUNT_UNMOUNTING: | |
1108 | case MOUNT_UNMOUNTING_SIGKILL: | |
1109 | case MOUNT_UNMOUNTING_SIGTERM: | |
1110 | /* Already on it */ | |
e537352b LP |
1111 | return 0; |
1112 | ||
22af0e58 LP |
1113 | case MOUNT_MOUNTING: |
1114 | case MOUNT_MOUNTING_DONE: | |
1115 | case MOUNT_REMOUNTING: | |
1116 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1117 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1118 | return 0; | |
e537352b | 1119 | |
22af0e58 LP |
1120 | case MOUNT_REMOUNTING_SIGTERM: |
1121 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1122 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1123 | return 0; | |
1124 | ||
1125 | case MOUNT_REMOUNTING_SIGKILL: | |
1126 | /* as above */ | |
1127 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1128 | return 0; | |
1129 | ||
1130 | case MOUNT_MOUNTED: | |
1131 | mount_enter_unmounting(m); | |
1132 | return 1; | |
1133 | ||
1134 | default: | |
1135 | assert_not_reached("Unexpected state."); | |
1136 | } | |
e537352b LP |
1137 | } |
1138 | ||
1139 | static int mount_reload(Unit *u) { | |
1140 | Mount *m = MOUNT(u); | |
1141 | ||
1142 | assert(m); | |
e537352b LP |
1143 | assert(m->state == MOUNT_MOUNTED); |
1144 | ||
9d2f5178 | 1145 | mount_enter_remounting(m); |
22af0e58 | 1146 | |
2d018ae2 | 1147 | return 1; |
e537352b LP |
1148 | } |
1149 | ||
a16e1123 LP |
1150 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1151 | Mount *m = MOUNT(u); | |
1152 | ||
1153 | assert(m); | |
1154 | assert(f); | |
1155 | assert(fds); | |
1156 | ||
d68c645b LP |
1157 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1158 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1159 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1160 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1161 | |
1162 | if (m->control_pid > 0) | |
d68c645b | 1163 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1164 | |
1165 | if (m->control_command_id >= 0) | |
d68c645b | 1166 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1167 | |
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1172 | Mount *m = MOUNT(u); | |
2c09fb81 | 1173 | int r; |
a16e1123 LP |
1174 | |
1175 | assert(u); | |
1176 | assert(key); | |
1177 | assert(value); | |
1178 | assert(fds); | |
1179 | ||
1180 | if (streq(key, "state")) { | |
1181 | MountState state; | |
1182 | ||
1183 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1184 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1185 | else |
1186 | m->deserialized_state = state; | |
2c09fb81 | 1187 | |
9d2f5178 LP |
1188 | } else if (streq(key, "result")) { |
1189 | MountResult f; | |
a16e1123 | 1190 | |
9d2f5178 LP |
1191 | f = mount_result_from_string(value); |
1192 | if (f < 0) | |
f2341e0a | 1193 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1194 | else if (f != MOUNT_SUCCESS) |
1195 | m->result = f; | |
1196 | ||
1197 | } else if (streq(key, "reload-result")) { | |
1198 | MountResult f; | |
1199 | ||
1200 | f = mount_result_from_string(value); | |
1201 | if (f < 0) | |
f2341e0a | 1202 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1203 | else if (f != MOUNT_SUCCESS) |
1204 | m->reload_result = f; | |
a16e1123 | 1205 | |
2c09fb81 LP |
1206 | } else if (streq(key, "n-retry-umount")) { |
1207 | ||
1208 | r = safe_atou(value, &m->n_retry_umount); | |
1209 | if (r < 0) | |
1210 | log_unit_debug(u, "Failed to parse n-retry-umount value: %s", value); | |
1211 | ||
a16e1123 | 1212 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1213 | |
3f459cd9 | 1214 | if (parse_pid(value, &m->control_pid) < 0) |
f2341e0a | 1215 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
3f459cd9 | 1216 | |
a16e1123 LP |
1217 | } else if (streq(key, "control-command")) { |
1218 | MountExecCommand id; | |
1219 | ||
f2341e0a LP |
1220 | id = mount_exec_command_from_string(value); |
1221 | if (id < 0) | |
1222 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1223 | else { |
1224 | m->control_command_id = id; | |
1225 | m->control_command = m->exec_command + id; | |
1226 | } | |
a16e1123 | 1227 | } else |
f2341e0a | 1228 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1229 | |
1230 | return 0; | |
1231 | } | |
1232 | ||
44a6b1b6 | 1233 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1234 | assert(u); |
1235 | ||
1236 | return state_translation_table[MOUNT(u)->state]; | |
1237 | } | |
1238 | ||
44a6b1b6 | 1239 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1240 | assert(u); |
1241 | ||
a16e1123 | 1242 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1243 | } |
1244 | ||
f2f725e5 | 1245 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1246 | Mount *m = MOUNT(u); |
1247 | ||
1248 | assert(m); | |
1249 | ||
f2f725e5 ZJS |
1250 | if (m->from_proc_self_mountinfo) |
1251 | return false; | |
1252 | ||
1253 | return true; | |
701cc384 LP |
1254 | } |
1255 | ||
e537352b LP |
1256 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1257 | Mount *m = MOUNT(u); | |
9d2f5178 | 1258 | MountResult f; |
e537352b LP |
1259 | |
1260 | assert(m); | |
1261 | assert(pid >= 0); | |
1262 | ||
8c47c732 LP |
1263 | if (pid != m->control_pid) |
1264 | return; | |
e537352b | 1265 | |
e537352b LP |
1266 | m->control_pid = 0; |
1267 | ||
1f0958f6 | 1268 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1269 | f = MOUNT_SUCCESS; |
1270 | else if (code == CLD_EXITED) | |
1271 | f = MOUNT_FAILURE_EXIT_CODE; | |
1272 | else if (code == CLD_KILLED) | |
1273 | f = MOUNT_FAILURE_SIGNAL; | |
1274 | else if (code == CLD_DUMPED) | |
1275 | f = MOUNT_FAILURE_CORE_DUMP; | |
1276 | else | |
1277 | assert_not_reached("Unknown code"); | |
1278 | ||
850b7410 LP |
1279 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1280 | mount_set_reload_result(m, f); | |
1281 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1282 | m->result = f; |
8c47c732 | 1283 | |
a16e1123 | 1284 | if (m->control_command) { |
6ea832a2 | 1285 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1286 | |
a16e1123 LP |
1287 | m->control_command = NULL; |
1288 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1289 | } | |
1290 | ||
91bbd9b7 LP |
1291 | unit_log_process_exit( |
1292 | u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1293 | "Mount process", | |
1294 | mount_exec_command_to_string(m->control_command_id), | |
1295 | code, status); | |
e537352b | 1296 | |
006aabbd AJ |
1297 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1298 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1299 | |
1300 | switch (m->state) { | |
1301 | ||
1302 | case MOUNT_MOUNTING: | |
006aabbd | 1303 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1304 | |
006aabbd AJ |
1305 | if (f == MOUNT_SUCCESS) { |
1306 | /* Either /bin/mount has an unexpected definition of success, | |
1307 | * or someone raced us and we lost. */ | |
1308 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1309 | f = MOUNT_FAILURE_PROTOCOL; | |
1310 | } | |
1311 | mount_enter_dead(m, f); | |
1312 | break; | |
1313 | ||
1314 | case MOUNT_MOUNTING_DONE: | |
1315 | mount_enter_mounted(m, f); | |
e537352b LP |
1316 | break; |
1317 | ||
e2f3b44c | 1318 | case MOUNT_REMOUNTING: |
e2f3b44c | 1319 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1320 | case MOUNT_REMOUNTING_SIGKILL: |
1321 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1322 | break; |
1323 | ||
e537352b | 1324 | case MOUNT_UNMOUNTING: |
e537352b | 1325 | |
3cc96856 | 1326 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1327 | |
1328 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1329 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1330 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1331 | |
1332 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1333 | log_unit_debug(u, "Mount still present, trying again."); | |
1334 | m->n_retry_umount++; | |
1335 | mount_enter_unmounting(m); | |
1336 | } else { | |
006aabbd | 1337 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1338 | mount_enter_mounted(m, f); |
1339 | } | |
1340 | } else | |
3cc96856 | 1341 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1342 | |
e537352b | 1343 | break; |
57018361 AJ |
1344 | |
1345 | case MOUNT_UNMOUNTING_SIGKILL: | |
1346 | case MOUNT_UNMOUNTING_SIGTERM: | |
1347 | mount_enter_dead_or_mounted(m, f); | |
1348 | break; | |
e537352b LP |
1349 | |
1350 | default: | |
1351 | assert_not_reached("Uh, control process died at wrong time."); | |
1352 | } | |
c4e2ceae LP |
1353 | |
1354 | /* Notify clients about changed exit status */ | |
1355 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1356 | } |
1357 | ||
718db961 LP |
1358 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1359 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1360 | |
1361 | assert(m); | |
718db961 | 1362 | assert(m->timer_event_source == source); |
e537352b LP |
1363 | |
1364 | switch (m->state) { | |
1365 | ||
1366 | case MOUNT_MOUNTING: | |
1367 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1368 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1369 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1370 | break; |
1371 | ||
1372 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1373 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1374 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1375 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1376 | break; |
1377 | ||
22af0e58 LP |
1378 | case MOUNT_REMOUNTING_SIGTERM: |
1379 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1380 | |
4819ff03 | 1381 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1382 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1383 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1384 | } else { |
22af0e58 LP |
1385 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1386 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1387 | } |
e537352b LP |
1388 | break; |
1389 | ||
22af0e58 LP |
1390 | case MOUNT_REMOUNTING_SIGKILL: |
1391 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1392 | |
22af0e58 LP |
1393 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1394 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1395 | break; | |
1396 | ||
1397 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1398 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1399 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1400 | break; |
1401 | ||
1402 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1403 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1404 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1405 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1406 | } else { |
22af0e58 LP |
1407 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1408 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1409 | } |
e537352b LP |
1410 | break; |
1411 | ||
e537352b | 1412 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1413 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1414 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1415 | break; |
1416 | ||
1417 | default: | |
1418 | assert_not_reached("Timeout at wrong time."); | |
1419 | } | |
718db961 LP |
1420 | |
1421 | return 0; | |
e537352b LP |
1422 | } |
1423 | ||
03b8cfed FB |
1424 | typedef struct { |
1425 | bool is_mounted; | |
1426 | bool just_mounted; | |
1427 | bool just_changed; | |
1428 | } MountSetupFlags; | |
1429 | ||
1430 | static int mount_setup_new_unit( | |
1431 | Unit *u, | |
1432 | const char *what, | |
1433 | const char *where, | |
1434 | const char *options, | |
1435 | const char *fstype, | |
1436 | MountSetupFlags *flags) { | |
1437 | ||
1438 | MountParameters *p; | |
1439 | ||
1440 | assert(u); | |
1441 | assert(flags); | |
1442 | ||
1443 | u->source_path = strdup("/proc/self/mountinfo"); | |
1444 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1445 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1446 | return -ENOMEM; |
1447 | ||
1448 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1449 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1450 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1451 | ||
1452 | p->what = strdup(what); | |
1453 | p->options = strdup(options); | |
1454 | p->fstype = strdup(fstype); | |
1455 | if (!p->what || !p->options || !p->fstype) | |
1456 | return -ENOMEM; | |
1457 | ||
1458 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1459 | const char *target; | |
1460 | int r; | |
1461 | ||
1462 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
35d8c19a | 1463 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1464 | if (r < 0) |
1465 | return r; | |
1466 | ||
35d8c19a | 1467 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1468 | if (r < 0) |
1469 | return r; | |
1470 | } | |
1471 | ||
cfcd4318 | 1472 | unit_add_to_load_queue(u); |
03b8cfed FB |
1473 | flags->is_mounted = true; |
1474 | flags->just_mounted = true; | |
1475 | flags->just_changed = true; | |
1476 | ||
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static int mount_setup_existing_unit( | |
1481 | Unit *u, | |
1482 | const char *what, | |
1483 | const char *where, | |
1484 | const char *options, | |
1485 | const char *fstype, | |
1486 | MountSetupFlags *flags) { | |
1487 | ||
1488 | MountParameters *p; | |
1489 | bool load_extras = false; | |
1490 | int r1, r2, r3; | |
1491 | ||
1492 | assert(u); | |
1493 | assert(flags); | |
1494 | ||
1495 | if (!MOUNT(u)->where) { | |
1496 | MOUNT(u)->where = strdup(where); | |
1497 | if (!MOUNT(u)->where) | |
1498 | return -ENOMEM; | |
1499 | } | |
1500 | ||
1501 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1502 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1503 | ||
1504 | r1 = free_and_strdup(&p->what, what); | |
1505 | r2 = free_and_strdup(&p->options, options); | |
1506 | r3 = free_and_strdup(&p->fstype, fstype); | |
1507 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1508 | return -ENOMEM; | |
1509 | ||
1510 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1511 | flags->is_mounted = true; | |
65d36b49 | 1512 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1513 | |
1514 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1515 | ||
1516 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1517 | /* _netdev option may have shown up late, or on a | |
1518 | * remount. Add remote-fs dependencies, even though | |
1519 | * local-fs ones may already be there. | |
1520 | * | |
1521 | * Note: due to a current limitation (we don't track | |
1522 | * in the dependency "Set*" objects who created a | |
1523 | * dependency), we can only add deps, never lose them, | |
1524 | * until the next full daemon-reload. */ | |
35d8c19a | 1525 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1526 | load_extras = true; |
1527 | } | |
1528 | ||
1529 | if (u->load_state == UNIT_NOT_FOUND) { | |
1530 | u->load_state = UNIT_LOADED; | |
1531 | u->load_error = 0; | |
1532 | ||
1533 | /* Load in the extras later on, after we | |
1534 | * finished initialization of the unit */ | |
1535 | ||
1536 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1537 | load_extras = true; | |
1538 | flags->just_changed = true; | |
1539 | } | |
1540 | ||
1541 | if (load_extras) | |
1542 | return mount_add_extras(MOUNT(u)); | |
1543 | ||
1544 | return 0; | |
1545 | } | |
1546 | ||
628c89cc | 1547 | static int mount_setup_unit( |
e537352b LP |
1548 | Manager *m, |
1549 | const char *what, | |
1550 | const char *where, | |
1551 | const char *options, | |
1552 | const char *fstype, | |
e537352b | 1553 | bool set_flags) { |
057d9ab8 | 1554 | |
03b8cfed FB |
1555 | _cleanup_free_ char *e = NULL; |
1556 | MountSetupFlags flags; | |
057d9ab8 LP |
1557 | Unit *u; |
1558 | int r; | |
b08d03ff | 1559 | |
f50e0a01 | 1560 | assert(m); |
b08d03ff LP |
1561 | assert(what); |
1562 | assert(where); | |
e537352b LP |
1563 | assert(options); |
1564 | assert(fstype); | |
1565 | ||
e537352b LP |
1566 | /* Ignore API mount points. They should never be referenced in |
1567 | * dependencies ever. */ | |
33ff02c9 | 1568 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1569 | return 0; |
b08d03ff | 1570 | |
8d567588 LP |
1571 | if (streq(fstype, "autofs")) |
1572 | return 0; | |
1573 | ||
4e85aff4 LP |
1574 | /* probably some kind of swap, ignore */ |
1575 | if (!is_path(where)) | |
b08d03ff LP |
1576 | return 0; |
1577 | ||
7410616c LP |
1578 | r = unit_name_from_path(where, ".mount", &e); |
1579 | if (r < 0) | |
1580 | return r; | |
b08d03ff | 1581 | |
7d17cfbc MS |
1582 | u = manager_get_unit(m, e); |
1583 | if (!u) { | |
03b8cfed FB |
1584 | /* First time we see this mount point meaning that it's |
1585 | * not been initiated by a mount unit but rather by the | |
1586 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1587 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1588 | if (r < 0) |
1589 | goto fail; | |
1590 | ||
03b8cfed FB |
1591 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1592 | if (r < 0) | |
1593 | unit_free(u); | |
1594 | } else | |
1595 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1596 | |
03b8cfed | 1597 | if (r < 0) |
e537352b | 1598 | goto fail; |
ff5f34d0 | 1599 | |
6b1dc2bd | 1600 | if (set_flags) { |
03b8cfed FB |
1601 | MOUNT(u)->is_mounted = flags.is_mounted; |
1602 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1603 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1604 | } |
1605 | ||
03b8cfed | 1606 | if (flags.just_changed) |
ff5f34d0 | 1607 | unit_add_to_dbus_queue(u); |
c1e1601e | 1608 | |
b08d03ff | 1609 | return 0; |
b08d03ff | 1610 | fail: |
fc95c359 | 1611 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
b08d03ff LP |
1612 | } |
1613 | ||
ef734fd6 | 1614 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1615 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1616 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1617 | int r = 0; |
b08d03ff LP |
1618 | |
1619 | assert(m); | |
1620 | ||
628c89cc | 1621 | t = mnt_new_table(); |
628c89cc | 1622 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1623 | if (!t || !i) |
628c89cc LP |
1624 | return log_oom(); |
1625 | ||
1626 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1627 | if (r < 0) |
628c89cc | 1628 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1629 | |
5cca8def ZJS |
1630 | r = 0; |
1631 | for (;;) { | |
95b862b0 | 1632 | struct libmnt_fs *fs; |
8d3ae2bd | 1633 | const char *device, *path, *options, *fstype; |
527b7a42 | 1634 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1635 | int k; |
b08d03ff | 1636 | |
628c89cc | 1637 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1638 | if (k == 1) |
1639 | break; | |
628c89cc LP |
1640 | if (k < 0) |
1641 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1642 | |
8d3ae2bd CL |
1643 | device = mnt_fs_get_source(fs); |
1644 | path = mnt_fs_get_target(fs); | |
1645 | options = mnt_fs_get_options(fs); | |
1646 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1647 | |
c0a7f8d3 DM |
1648 | if (!device || !path) |
1649 | continue; | |
1650 | ||
527b7a42 | 1651 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1652 | return log_oom(); |
1653 | ||
527b7a42 | 1654 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1655 | return log_oom(); |
b08d03ff | 1656 | |
485ae697 | 1657 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc LP |
1658 | |
1659 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1660 | if (r == 0 && k < 0) |
60b912f6 | 1661 | r = k; |
b08d03ff LP |
1662 | } |
1663 | ||
e537352b LP |
1664 | return r; |
1665 | } | |
1666 | ||
1667 | static void mount_shutdown(Manager *m) { | |
1668 | assert(m); | |
1669 | ||
718db961 LP |
1670 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1671 | ||
d379d442 KZ |
1672 | mnt_unref_monitor(m->mount_monitor); |
1673 | m->mount_monitor = NULL; | |
b08d03ff LP |
1674 | } |
1675 | ||
7a7821c8 | 1676 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1677 | Mount *m = MOUNT(u); |
7a7821c8 | 1678 | usec_t t; |
68db7a3b ZJS |
1679 | int r; |
1680 | ||
1681 | if (!m->timer_event_source) | |
1682 | return 0; | |
1683 | ||
7a7821c8 | 1684 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1685 | if (r < 0) |
1686 | return r; | |
7a7821c8 LP |
1687 | if (t == USEC_INFINITY) |
1688 | return 0; | |
68db7a3b | 1689 | |
7a7821c8 | 1690 | *timeout = t; |
68db7a3b ZJS |
1691 | return 1; |
1692 | } | |
1693 | ||
04eb582a | 1694 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1695 | Unit *u; |
1696 | int r; | |
1697 | ||
1698 | assert(m); | |
1699 | ||
1700 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1701 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1702 | ||
1703 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1704 | if (!u) { | |
a581e45a | 1705 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1706 | if (r < 0) { |
1707 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1708 | return; | |
1709 | } | |
11222d0f LP |
1710 | } |
1711 | ||
1712 | u->perpetual = true; | |
1713 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1714 | ||
1715 | unit_add_to_load_queue(u); | |
1716 | unit_add_to_dbus_queue(u); | |
1717 | } | |
1718 | ||
1719 | static bool mount_is_mounted(Mount *m) { | |
1720 | assert(m); | |
1721 | ||
1722 | return UNIT(m)->perpetual || m->is_mounted; | |
1723 | } | |
1724 | ||
ba64af90 | 1725 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1726 | int r; |
d379d442 | 1727 | |
b08d03ff LP |
1728 | assert(m); |
1729 | ||
8d3ae2bd CL |
1730 | mnt_init_debug(0); |
1731 | ||
d379d442 KZ |
1732 | if (!m->mount_monitor) { |
1733 | int fd; | |
ef734fd6 | 1734 | |
d379d442 KZ |
1735 | m->mount_monitor = mnt_new_monitor(); |
1736 | if (!m->mount_monitor) { | |
ba64af90 | 1737 | log_oom(); |
718db961 | 1738 | goto fail; |
d379d442 | 1739 | } |
29083707 | 1740 | |
d379d442 | 1741 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1742 | if (r < 0) { |
1743 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1744 | goto fail; |
ba64af90 LP |
1745 | } |
1746 | ||
d379d442 | 1747 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1748 | if (r < 0) { |
1749 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1750 | goto fail; |
ba64af90 | 1751 | } |
90598531 | 1752 | |
d379d442 KZ |
1753 | /* mnt_unref_monitor() will close the fd */ |
1754 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1755 | if (r < 0) { |
1756 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1757 | goto fail; |
ba64af90 | 1758 | } |
befb6d54 | 1759 | |
d379d442 | 1760 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1761 | if (r < 0) { |
1762 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1763 | goto fail; |
ba64af90 | 1764 | } |
befb6d54 | 1765 | |
83231637 | 1766 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1767 | if (r < 0) { |
1768 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1769 | goto fail; |
ba64af90 | 1770 | } |
7dfbe2e3 | 1771 | |
d379d442 | 1772 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1773 | } |
1774 | ||
e62d8c39 ZJS |
1775 | r = mount_load_proc_self_mountinfo(m, false); |
1776 | if (r < 0) | |
b08d03ff LP |
1777 | goto fail; |
1778 | ||
ba64af90 | 1779 | return; |
b08d03ff LP |
1780 | |
1781 | fail: | |
1782 | mount_shutdown(m); | |
5cb5a6ff LP |
1783 | } |
1784 | ||
718db961 | 1785 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1786 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1787 | Manager *m = userdata; |
fcd8b266 LP |
1788 | const char *what; |
1789 | Iterator i; | |
595ed347 | 1790 | Unit *u; |
ef734fd6 LP |
1791 | int r; |
1792 | ||
1793 | assert(m); | |
d379d442 | 1794 | assert(revents & EPOLLIN); |
ef734fd6 | 1795 | |
d379d442 | 1796 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1797 | bool rescan = false; |
befb6d54 | 1798 | |
d379d442 KZ |
1799 | /* Drain all events and verify that the event is valid. |
1800 | * | |
1801 | * Note that libmount also monitors /run/mount mkdir if the | |
1802 | * directory does not exist yet. The mkdir may generate event | |
1803 | * which is irrelevant for us. | |
1804 | * | |
1805 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1806 | do { | |
1807 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1808 | if (r == 0) | |
1809 | rescan = true; | |
1810 | else if (r < 0) | |
5e1ee764 | 1811 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1812 | } while (r == 0); |
1813 | ||
1814 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1815 | if (!rescan) |
1816 | return 0; | |
1817 | } | |
ef734fd6 | 1818 | |
4f0eedb7 ZJS |
1819 | r = mount_load_proc_self_mountinfo(m, true); |
1820 | if (r < 0) { | |
e537352b | 1821 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1822 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1823 | Mount *mount = MOUNT(u); | |
e537352b LP |
1824 | |
1825 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1826 | } | |
1827 | ||
718db961 | 1828 | return 0; |
ef734fd6 LP |
1829 | } |
1830 | ||
1831 | manager_dispatch_load_queue(m); | |
1832 | ||
595ed347 MS |
1833 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1834 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1835 | |
11222d0f | 1836 | if (!mount_is_mounted(mount)) { |
e537352b | 1837 | |
394763f6 LP |
1838 | /* A mount point is not around right now. It |
1839 | * might be gone, or might never have | |
1840 | * existed. */ | |
1841 | ||
1842 | if (mount->from_proc_self_mountinfo && | |
1843 | mount->parameters_proc_self_mountinfo.what) { | |
1844 | ||
1845 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1846 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
394763f6 LP |
1847 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
1848 | log_oom(); /* we don't care too much about OOM here... */ | |
1849 | } | |
fcd8b266 | 1850 | |
ef734fd6 | 1851 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1852 | |
1853 | switch (mount->state) { | |
1854 | ||
1855 | case MOUNT_MOUNTED: | |
aef83136 LP |
1856 | /* This has just been unmounted by |
1857 | * somebody else, follow the state | |
1858 | * change. */ | |
cf6f7f66 | 1859 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1860 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1861 | break; |
1862 | ||
1863 | default: | |
e537352b | 1864 | break; |
e537352b LP |
1865 | } |
1866 | ||
1867 | } else if (mount->just_mounted || mount->just_changed) { | |
1868 | ||
fcd8b266 | 1869 | /* A mount point was added or changed */ |
e537352b LP |
1870 | |
1871 | switch (mount->state) { | |
1872 | ||
1873 | case MOUNT_DEAD: | |
fdf20a31 | 1874 | case MOUNT_FAILED: |
4b58153d LP |
1875 | |
1876 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1877 | * generate a new invocation ID for this implicitly and automatically. */ | |
1878 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1879 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1880 | break; |
1881 | ||
1882 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1883 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1884 | break; |
1885 | ||
1886 | default: | |
1887 | /* Nothing really changed, but let's | |
1888 | * issue an notification call | |
1889 | * nonetheless, in case somebody is | |
1890 | * waiting for this. (e.g. file system | |
1891 | * ro/rw remounts.) */ | |
1892 | mount_set_state(mount, mount->state); | |
1893 | break; | |
1894 | } | |
394763f6 | 1895 | } |
fcd8b266 | 1896 | |
11222d0f | 1897 | if (mount_is_mounted(mount) && |
394763f6 LP |
1898 | mount->from_proc_self_mountinfo && |
1899 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1900 | |
548f6937 | 1901 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
394763f6 LP |
1902 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) |
1903 | log_oom(); | |
e537352b LP |
1904 | } |
1905 | ||
1906 | /* Reset the flags for later calls */ | |
1907 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1908 | } | |
718db961 | 1909 | |
fcd8b266 LP |
1910 | SET_FOREACH(what, gone, i) { |
1911 | if (set_contains(around, what)) | |
1912 | continue; | |
1913 | ||
1914 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1915 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 LP |
1916 | } |
1917 | ||
718db961 | 1918 | return 0; |
e537352b LP |
1919 | } |
1920 | ||
fdf20a31 | 1921 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1922 | Mount *m = MOUNT(u); |
1923 | ||
1924 | assert(m); | |
1925 | ||
fdf20a31 | 1926 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1927 | mount_set_state(m, MOUNT_DEAD); |
1928 | ||
9d2f5178 LP |
1929 | m->result = MOUNT_SUCCESS; |
1930 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1931 | } |
1932 | ||
718db961 | 1933 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1934 | Mount *m = MOUNT(u); |
1935 | ||
1936 | assert(m); | |
1937 | ||
814cc562 | 1938 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1939 | } |
1940 | ||
291d565a LP |
1941 | static int mount_control_pid(Unit *u) { |
1942 | Mount *m = MOUNT(u); | |
1943 | ||
1944 | assert(m); | |
1945 | ||
1946 | return m->control_pid; | |
1947 | } | |
1948 | ||
a16e1123 LP |
1949 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1950 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1951 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1952 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1953 | }; | |
1954 | ||
1955 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1956 | ||
9d2f5178 LP |
1957 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1958 | [MOUNT_SUCCESS] = "success", | |
1959 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1960 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1961 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1962 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1963 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1964 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1965 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1966 | }; |
1967 | ||
1968 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1969 | ||
87f0e418 | 1970 | const UnitVTable mount_vtable = { |
7d17cfbc | 1971 | .object_size = sizeof(Mount), |
718db961 LP |
1972 | .exec_context_offset = offsetof(Mount, exec_context), |
1973 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1974 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1975 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1976 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1977 | |
f975e971 LP |
1978 | .sections = |
1979 | "Unit\0" | |
1980 | "Mount\0" | |
1981 | "Install\0", | |
4ad49000 | 1982 | .private_section = "Mount", |
71645aca | 1983 | |
e537352b LP |
1984 | .init = mount_init, |
1985 | .load = mount_load, | |
034c6ed7 | 1986 | .done = mount_done, |
e537352b | 1987 | |
f50e0a01 LP |
1988 | .coldplug = mount_coldplug, |
1989 | ||
034c6ed7 | 1990 | .dump = mount_dump, |
5cb5a6ff | 1991 | |
e537352b LP |
1992 | .start = mount_start, |
1993 | .stop = mount_stop, | |
1994 | .reload = mount_reload, | |
1995 | ||
8a0867d6 LP |
1996 | .kill = mount_kill, |
1997 | ||
a16e1123 LP |
1998 | .serialize = mount_serialize, |
1999 | .deserialize_item = mount_deserialize_item, | |
2000 | ||
f50e0a01 | 2001 | .active_state = mount_active_state, |
10a94420 | 2002 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2003 | |
f2f725e5 | 2004 | .may_gc = mount_may_gc, |
701cc384 | 2005 | |
e537352b | 2006 | .sigchld_event = mount_sigchld_event, |
e537352b | 2007 | |
fdf20a31 | 2008 | .reset_failed = mount_reset_failed, |
291d565a LP |
2009 | |
2010 | .control_pid = mount_control_pid, | |
5632e374 | 2011 | |
718db961 | 2012 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
2013 | .bus_set_property = bus_mount_set_property, |
2014 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2015 | |
68db7a3b ZJS |
2016 | .get_timeout = mount_get_timeout, |
2017 | ||
0e252f6b TG |
2018 | .can_transient = true, |
2019 | ||
04eb582a | 2020 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2021 | .enumerate = mount_enumerate, |
c6918296 MS |
2022 | .shutdown = mount_shutdown, |
2023 | ||
2024 | .status_message_formats = { | |
2025 | .starting_stopping = { | |
2026 | [0] = "Mounting %s...", | |
2027 | [1] = "Unmounting %s...", | |
2028 | }, | |
2029 | .finished_start_job = { | |
2030 | [JOB_DONE] = "Mounted %s.", | |
2031 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2032 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2033 | }, | |
2034 | .finished_stop_job = { | |
2035 | [JOB_DONE] = "Unmounted %s.", | |
2036 | [JOB_FAILED] = "Failed unmounting %s.", | |
2037 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2038 | }, | |
2039 | }, | |
5cb5a6ff | 2040 | }; |