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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; |
8c8203db | 429 | bool nofail; |
d54bab90 | 430 | int r; |
2edd4434 LP |
431 | |
432 | assert(m); | |
433 | ||
4c9ea260 LP |
434 | if (!UNIT(m)->default_dependencies) |
435 | return 0; | |
436 | ||
ad2706db LP |
437 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
438 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
439 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
440 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 441 | return 0; |
2edd4434 | 442 | |
874d3404 LP |
443 | p = get_mount_parameters(m); |
444 | if (!p) | |
6b1dc2bd LP |
445 | return 0; |
446 | ||
eef85c4a | 447 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
8c8203db | 448 | nofail = m->from_fragment ? fstab_test_yes_no_option(m->parameters_fragment.options, "nofail\0" "fail\0") : false; |
eef85c4a | 449 | |
e8d2f6cd | 450 | if (mount_is_network(p)) { |
ea0ec5ce LP |
451 | /* We order ourselves after network.target. This is |
452 | * primarily useful at shutdown: services that take | |
453 | * down the network should order themselves before | |
454 | * network.target, so that they are shut down only | |
455 | * after this mount unit is stopped. */ | |
6b1dc2bd | 456 | |
35d8c19a | 457 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
458 | if (r < 0) |
459 | return r; | |
a63a5c46 | 460 | |
ea0ec5ce LP |
461 | /* We pull in network-online.target, and order |
462 | * ourselves after it. This is useful at start-up to | |
463 | * actively pull in tools that want to be started | |
464 | * before we start mounting network file systems, and | |
465 | * whose purpose it is to delay this until the network | |
466 | * is "up". */ | |
467 | ||
5a724170 | 468 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
469 | if (r < 0) |
470 | return r; | |
ea0ec5ce LP |
471 | |
472 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
d54bab90 LP |
473 | before = SPECIAL_REMOTE_FS_TARGET; |
474 | } else { | |
ea0ec5ce | 475 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
476 | before = SPECIAL_LOCAL_FS_TARGET; |
477 | } | |
478 | ||
8c8203db YW |
479 | if (!nofail) { |
480 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, true, mask); | |
481 | if (r < 0) | |
482 | return r; | |
483 | } | |
ea0ec5ce | 484 | |
35d8c19a | 485 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
486 | if (r < 0) |
487 | return r; | |
e8d2f6cd | 488 | |
5a724170 | 489 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
490 | if (r < 0) |
491 | return r; | |
2edd4434 | 492 | |
3e3852b3 | 493 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 494 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 495 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
496 | if (r < 0) |
497 | return r; | |
498 | } | |
499 | ||
2edd4434 LP |
500 | return 0; |
501 | } | |
502 | ||
8d567588 | 503 | static int mount_verify(Mount *m) { |
a57f7e2c | 504 | _cleanup_free_ char *e = NULL; |
b294b79f | 505 | MountParameters *p; |
7410616c | 506 | int r; |
a57f7e2c | 507 | |
8d567588 LP |
508 | assert(m); |
509 | ||
1124fe6f | 510 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
511 | return 0; |
512 | ||
1df96fcb | 513 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
514 | return -ENOENT; |
515 | ||
7410616c LP |
516 | r = unit_name_from_path(m->where, ".mount", &e); |
517 | if (r < 0) | |
f2341e0a | 518 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 519 | |
7410616c | 520 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 521 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 522 | return -ENOEXEC; |
8d567588 LP |
523 | } |
524 | ||
33ff02c9 | 525 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 526 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 527 | return -ENOEXEC; |
33ff02c9 LP |
528 | } |
529 | ||
b294b79f MO |
530 | p = get_mount_parameters_fragment(m); |
531 | if (p && !p->what) { | |
f2341e0a | 532 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 533 | return -ENOEXEC; |
4e85aff4 LP |
534 | } |
535 | ||
4819ff03 | 536 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 537 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 538 | return -ENOEXEC; |
4d0e5dbd LP |
539 | } |
540 | ||
8d567588 LP |
541 | return 0; |
542 | } | |
543 | ||
1a4ac875 MS |
544 | static int mount_add_extras(Mount *m) { |
545 | Unit *u = UNIT(m); | |
e537352b LP |
546 | int r; |
547 | ||
e821075a LP |
548 | assert(m); |
549 | ||
1f736476 LP |
550 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
551 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
552 | * to run with an already set up unit. */ | |
553 | ||
e821075a | 554 | if (u->fragment_path) |
1a4ac875 | 555 | m->from_fragment = true; |
e537352b | 556 | |
1a4ac875 | 557 | if (!m->where) { |
7410616c LP |
558 | r = unit_name_to_path(u->id, &m->where); |
559 | if (r < 0) | |
560 | return r; | |
1a4ac875 | 561 | } |
a16e1123 | 562 | |
858d36c1 | 563 | path_simplify(m->where, false); |
e537352b | 564 | |
e821075a | 565 | if (!u->description) { |
1a4ac875 MS |
566 | r = unit_set_description(u, m->where); |
567 | if (r < 0) | |
173a8d04 | 568 | return r; |
1a4ac875 | 569 | } |
6e2ef85b | 570 | |
eef85c4a | 571 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
572 | if (r < 0) |
573 | return r; | |
6e2ef85b | 574 | |
eef85c4a | 575 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
576 | if (r < 0) |
577 | return r; | |
6e2ef85b | 578 | |
eef85c4a | 579 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
580 | if (r < 0) |
581 | return r; | |
e537352b | 582 | |
598459ce LP |
583 | r = unit_patch_contexts(u); |
584 | if (r < 0) | |
585 | return r; | |
4e67ddd6 | 586 | |
598459ce | 587 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
588 | if (r < 0) |
589 | return r; | |
590 | ||
d79200e2 | 591 | r = unit_set_default_slice(u); |
1a4ac875 MS |
592 | if (r < 0) |
593 | return r; | |
594 | ||
4c9ea260 LP |
595 | r = mount_add_default_dependencies(m); |
596 | if (r < 0) | |
597 | return r; | |
598459ce | 598 | |
1a4ac875 MS |
599 | return 0; |
600 | } | |
601 | ||
11222d0f LP |
602 | static int mount_load_root_mount(Unit *u) { |
603 | assert(u); | |
604 | ||
605 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
606 | return 0; | |
607 | ||
608 | u->perpetual = true; | |
609 | u->default_dependencies = false; | |
610 | ||
611 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
612 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
613 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
614 | ||
615 | if (!u->description) | |
616 | u->description = strdup("Root Mount"); | |
617 | ||
618 | return 1; | |
619 | } | |
620 | ||
1a4ac875 MS |
621 | static int mount_load(Unit *u) { |
622 | Mount *m = MOUNT(u); | |
780ae022 | 623 | int r, q, w; |
1a4ac875 MS |
624 | |
625 | assert(u); | |
626 | assert(u->load_state == UNIT_STUB); | |
627 | ||
11222d0f | 628 | r = mount_load_root_mount(u); |
11222d0f LP |
629 | |
630 | if (m->from_proc_self_mountinfo || u->perpetual) | |
780ae022 | 631 | q = unit_load_fragment_and_dropin_optional(u); |
8eba616f | 632 | else |
780ae022 LP |
633 | q = unit_load_fragment_and_dropin(u); |
634 | ||
635 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
636 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
637 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
638 | * 'slice' field for a unit once it is active. */ | |
639 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
640 | w = mount_add_extras(m); | |
641 | else | |
642 | w = 0; | |
643 | ||
1a4ac875 MS |
644 | if (r < 0) |
645 | return r; | |
780ae022 LP |
646 | if (q < 0) |
647 | return q; | |
648 | if (w < 0) | |
649 | return w; | |
e537352b | 650 | |
8d567588 | 651 | return mount_verify(m); |
e537352b LP |
652 | } |
653 | ||
654 | static void mount_set_state(Mount *m, MountState state) { | |
655 | MountState old_state; | |
656 | assert(m); | |
657 | ||
6fcbec6f LP |
658 | if (m->state != state) |
659 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
660 | ||
e537352b LP |
661 | old_state = m->state; |
662 | m->state = state; | |
663 | ||
c634f3d2 | 664 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 665 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 666 | mount_unwatch_control_pid(m); |
e537352b | 667 | m->control_command = NULL; |
a16e1123 | 668 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
669 | } |
670 | ||
671 | if (state != old_state) | |
f2341e0a | 672 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 673 | |
2ad2e41a LP |
674 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
675 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
676 | } |
677 | ||
be847e82 | 678 | static int mount_coldplug(Unit *u) { |
e537352b | 679 | Mount *m = MOUNT(u); |
a16e1123 LP |
680 | MountState new_state = MOUNT_DEAD; |
681 | int r; | |
e537352b LP |
682 | |
683 | assert(m); | |
684 | assert(m->state == MOUNT_DEAD); | |
685 | ||
a16e1123 LP |
686 | if (m->deserialized_state != m->state) |
687 | new_state = m->deserialized_state; | |
688 | else if (m->from_proc_self_mountinfo) | |
689 | new_state = MOUNT_MOUNTED; | |
e537352b | 690 | |
5bcb0f2b LP |
691 | if (new_state == m->state) |
692 | return 0; | |
e537352b | 693 | |
c386f588 LP |
694 | if (m->control_pid > 0 && |
695 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 696 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
697 | |
698 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
699 | if (r < 0) | |
700 | return r; | |
e537352b | 701 | |
36c16a7c | 702 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
703 | if (r < 0) |
704 | return r; | |
a16e1123 | 705 | } |
e537352b | 706 | |
e8a565cb | 707 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 708 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
709 | (void) unit_setup_exec_runtime(u); |
710 | } | |
29206d46 | 711 | |
5bcb0f2b | 712 | mount_set_state(m, new_state); |
e537352b | 713 | return 0; |
e537352b LP |
714 | } |
715 | ||
716 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 717 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
718 | Mount *m = MOUNT(u); |
719 | MountParameters *p; | |
720 | ||
721 | assert(m); | |
722 | assert(f); | |
723 | ||
cb39ed3f | 724 | p = get_mount_parameters(m); |
e537352b LP |
725 | |
726 | fprintf(f, | |
727 | "%sMount State: %s\n" | |
81a5c6d0 | 728 | "%sResult: %s\n" |
e537352b LP |
729 | "%sWhere: %s\n" |
730 | "%sWhat: %s\n" | |
731 | "%sFile System Type: %s\n" | |
732 | "%sOptions: %s\n" | |
e537352b LP |
733 | "%sFrom /proc/self/mountinfo: %s\n" |
734 | "%sFrom fragment: %s\n" | |
ad2706db | 735 | "%sExtrinsic: %s\n" |
e520950a | 736 | "%sDirectoryMode: %04o\n" |
49915de2 | 737 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 738 | "%sLazyUnmount: %s\n" |
91899792 YW |
739 | "%sForceUnmount: %s\n" |
740 | "%sTimoutSec: %s\n", | |
a16e1123 | 741 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 742 | prefix, mount_result_to_string(m->result), |
e537352b | 743 | prefix, m->where, |
1e4fc9b1 HH |
744 | prefix, p ? strna(p->what) : "n/a", |
745 | prefix, p ? strna(p->fstype) : "n/a", | |
746 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
747 | prefix, yes_no(m->from_proc_self_mountinfo), |
748 | prefix, yes_no(m->from_fragment), | |
ad2706db | 749 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 750 | prefix, m->directory_mode, |
49915de2 | 751 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 752 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
753 | prefix, yes_no(m->force_unmount), |
754 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
755 | |
756 | if (m->control_pid > 0) | |
757 | fprintf(f, | |
ccd06097 ZJS |
758 | "%sControl PID: "PID_FMT"\n", |
759 | prefix, m->control_pid); | |
e537352b LP |
760 | |
761 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 762 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 763 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
764 | } |
765 | ||
a16e1123 | 766 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 767 | |
b9c04eaf | 768 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
769 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
770 | .stdin_fd = -1, | |
771 | .stdout_fd = -1, | |
772 | .stderr_fd = -1, | |
773 | .exec_fd = -1, | |
9fa95f85 | 774 | }; |
3c7416b6 LP |
775 | pid_t pid; |
776 | int r; | |
a16e1123 LP |
777 | |
778 | assert(m); | |
779 | assert(c); | |
780 | assert(_pid); | |
781 | ||
3c7416b6 | 782 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
783 | if (r < 0) |
784 | return r; | |
785 | ||
36c16a7c | 786 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 787 | if (r < 0) |
36c16a7c | 788 | return r; |
a16e1123 | 789 | |
1ad6e8b3 LP |
790 | r = unit_set_exec_params(UNIT(m), &exec_params); |
791 | if (r < 0) | |
792 | return r; | |
9fa95f85 | 793 | |
f2341e0a LP |
794 | r = exec_spawn(UNIT(m), |
795 | c, | |
4ad49000 | 796 | &m->exec_context, |
9fa95f85 | 797 | &exec_params, |
613b411c | 798 | m->exec_runtime, |
29206d46 | 799 | &m->dynamic_creds, |
4ad49000 LP |
800 | &pid); |
801 | if (r < 0) | |
36c16a7c | 802 | return r; |
a16e1123 | 803 | |
4ad49000 LP |
804 | r = unit_watch_pid(UNIT(m), pid); |
805 | if (r < 0) | |
a16e1123 | 806 | /* FIXME: we need to do something here */ |
36c16a7c | 807 | return r; |
a16e1123 LP |
808 | |
809 | *_pid = pid; | |
810 | ||
811 | return 0; | |
a16e1123 LP |
812 | } |
813 | ||
9d2f5178 | 814 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
815 | assert(m); |
816 | ||
a0fef983 | 817 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 818 | m->result = f; |
e537352b | 819 | |
aac99f30 | 820 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
29206d46 LP |
821 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
822 | ||
e8a565cb | 823 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 824 | |
3536f49e | 825 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 826 | |
00d9ef85 LP |
827 | unit_unref_uid_gid(UNIT(m), true); |
828 | ||
29206d46 | 829 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
830 | } |
831 | ||
9d2f5178 | 832 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
833 | assert(m); |
834 | ||
a0fef983 | 835 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 836 | m->result = f; |
80876c20 LP |
837 | |
838 | mount_set_state(m, MOUNT_MOUNTED); | |
839 | } | |
840 | ||
22af0e58 LP |
841 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
842 | assert(m); | |
843 | ||
844 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
845 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
846 | * ultimately we just mirror the kernel's internal state on this. */ | |
847 | ||
848 | if (m->from_proc_self_mountinfo) | |
849 | mount_enter_mounted(m, f); | |
850 | else | |
851 | mount_enter_dead(m, f); | |
852 | } | |
853 | ||
854 | static int state_to_kill_operation(MountState state) { | |
855 | switch (state) { | |
856 | ||
857 | case MOUNT_REMOUNTING_SIGTERM: | |
858 | case MOUNT_UNMOUNTING_SIGTERM: | |
859 | return KILL_TERMINATE; | |
860 | ||
861 | case MOUNT_REMOUNTING_SIGKILL: | |
862 | case MOUNT_UNMOUNTING_SIGKILL: | |
863 | return KILL_KILL; | |
864 | ||
865 | default: | |
866 | return _KILL_OPERATION_INVALID; | |
867 | } | |
868 | } | |
869 | ||
9d2f5178 | 870 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
871 | int r; |
872 | ||
873 | assert(m); | |
874 | ||
a0fef983 | 875 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 876 | m->result = f; |
e537352b | 877 | |
cd2086fe LP |
878 | r = unit_kill_context( |
879 | UNIT(m), | |
880 | &m->kill_context, | |
22af0e58 | 881 | state_to_kill_operation(state), |
cd2086fe LP |
882 | -1, |
883 | m->control_pid, | |
884 | false); | |
885 | if (r < 0) | |
886 | goto fail; | |
e537352b | 887 | |
cd2086fe | 888 | if (r > 0) { |
36c16a7c | 889 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 890 | if (r < 0) |
80876c20 | 891 | goto fail; |
e537352b | 892 | |
80876c20 | 893 | mount_set_state(m, state); |
22af0e58 | 894 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 895 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 896 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 897 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 898 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 899 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 900 | else |
22af0e58 | 901 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
902 | |
903 | return; | |
904 | ||
905 | fail: | |
f2341e0a | 906 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 907 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
908 | } |
909 | ||
9d2f5178 | 910 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
911 | int r; |
912 | ||
913 | assert(m); | |
914 | ||
7d54a03a LP |
915 | /* Start counting our attempts */ |
916 | if (!IN_SET(m->state, | |
917 | MOUNT_UNMOUNTING, | |
918 | MOUNT_UNMOUNTING_SIGTERM, | |
919 | MOUNT_UNMOUNTING_SIGKILL)) | |
920 | m->n_retry_umount = 0; | |
921 | ||
a16e1123 LP |
922 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
923 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 924 | |
83897d54 | 925 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
926 | if (r >= 0 && m->lazy_unmount) |
927 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
928 | if (r >= 0 && m->force_unmount) |
929 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 930 | if (r < 0) |
e537352b LP |
931 | goto fail; |
932 | ||
a16e1123 | 933 | mount_unwatch_control_pid(m); |
5e94833f | 934 | |
7d54a03a LP |
935 | r = mount_spawn(m, m->control_command, &m->control_pid); |
936 | if (r < 0) | |
e537352b LP |
937 | goto fail; |
938 | ||
939 | mount_set_state(m, MOUNT_UNMOUNTING); | |
940 | ||
941 | return; | |
942 | ||
943 | fail: | |
f2341e0a | 944 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 945 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
946 | } |
947 | ||
8d567588 | 948 | static void mount_enter_mounting(Mount *m) { |
e537352b | 949 | int r; |
cb39ed3f | 950 | MountParameters *p; |
e537352b LP |
951 | |
952 | assert(m); | |
953 | ||
25cd4964 | 954 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
955 | if (r < 0) |
956 | goto fail; | |
957 | ||
958 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 959 | |
f2341e0a | 960 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
a4634b21 LP |
961 | unit_warn_leftover_processes(UNIT(m)); |
962 | ||
963 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
964 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
965 | ||
cb39ed3f | 966 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 967 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 968 | if (p && mount_is_bind(p)) |
f2341e0a | 969 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 970 | |
b294b79f | 971 | if (p) { |
17a1c597 ZJS |
972 | _cleanup_free_ char *opts = NULL; |
973 | ||
b294b79f | 974 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
975 | if (r < 0) |
976 | goto fail; | |
977 | ||
b294b79f | 978 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
979 | if (r >= 0 && m->sloppy_options) |
980 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
981 | if (r >= 0 && p->fstype) |
982 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 983 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 984 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 985 | } else |
e537352b | 986 | r = -ENOENT; |
e537352b LP |
987 | if (r < 0) |
988 | goto fail; | |
989 | ||
a16e1123 | 990 | mount_unwatch_control_pid(m); |
5e94833f | 991 | |
257f1d8e LP |
992 | r = mount_spawn(m, m->control_command, &m->control_pid); |
993 | if (r < 0) | |
e537352b LP |
994 | goto fail; |
995 | ||
996 | mount_set_state(m, MOUNT_MOUNTING); | |
997 | ||
998 | return; | |
999 | ||
1000 | fail: | |
f2341e0a | 1001 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1002 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1003 | } |
1004 | ||
850b7410 LP |
1005 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1006 | assert(m); | |
1007 | ||
1008 | /* Only store the first error we encounter */ | |
1009 | if (m->reload_result != MOUNT_SUCCESS) | |
1010 | return; | |
1011 | ||
1012 | m->reload_result = result; | |
1013 | } | |
1014 | ||
9d2f5178 | 1015 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1016 | int r; |
b294b79f | 1017 | MountParameters *p; |
e537352b LP |
1018 | |
1019 | assert(m); | |
1020 | ||
850b7410 LP |
1021 | /* Reset reload result when we are about to start a new remount operation */ |
1022 | m->reload_result = MOUNT_SUCCESS; | |
1023 | ||
a16e1123 LP |
1024 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1025 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1026 | |
b294b79f MO |
1027 | p = get_mount_parameters_fragment(m); |
1028 | if (p) { | |
e537352b LP |
1029 | const char *o; |
1030 | ||
b294b79f MO |
1031 | if (p->options) |
1032 | o = strjoina("remount,", p->options); | |
718db961 | 1033 | else |
e537352b LP |
1034 | o = "remount"; |
1035 | ||
f00929ad | 1036 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1037 | p->what, m->where, |
e86b3761 | 1038 | "-o", o, NULL); |
e86b3761 ZJS |
1039 | if (r >= 0 && m->sloppy_options) |
1040 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1041 | if (r >= 0 && p->fstype) |
1042 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1043 | } else |
e537352b | 1044 | r = -ENOENT; |
60b912f6 | 1045 | if (r < 0) |
e537352b | 1046 | goto fail; |
e537352b | 1047 | |
a16e1123 | 1048 | mount_unwatch_control_pid(m); |
5e94833f | 1049 | |
718db961 LP |
1050 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1051 | if (r < 0) | |
e537352b LP |
1052 | goto fail; |
1053 | ||
1054 | mount_set_state(m, MOUNT_REMOUNTING); | |
1055 | ||
1056 | return; | |
1057 | ||
1058 | fail: | |
f2341e0a | 1059 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1060 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1061 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1062 | } |
1063 | ||
7eba1463 LP |
1064 | static void mount_cycle_clear(Mount *m) { |
1065 | assert(m); | |
1066 | ||
1067 | /* Clear all state we shall forget for this new cycle */ | |
1068 | ||
1069 | m->result = MOUNT_SUCCESS; | |
1070 | m->reload_result = MOUNT_SUCCESS; | |
1071 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1072 | UNIT(m)->reset_accounting = true; | |
1073 | } | |
1074 | ||
e537352b LP |
1075 | static int mount_start(Unit *u) { |
1076 | Mount *m = MOUNT(u); | |
07299350 | 1077 | int r; |
e537352b LP |
1078 | |
1079 | assert(m); | |
1080 | ||
1081 | /* We cannot fulfill this request right now, try again later | |
1082 | * please! */ | |
f2aed307 LP |
1083 | if (IN_SET(m->state, |
1084 | MOUNT_UNMOUNTING, | |
1085 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1086 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1087 | return -EAGAIN; |
1088 | ||
1089 | /* Already on it! */ | |
60b912f6 | 1090 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1091 | return 0; |
1092 | ||
f2aed307 | 1093 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1094 | |
07299350 LP |
1095 | r = unit_start_limit_test(u); |
1096 | if (r < 0) { | |
1097 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1098 | return r; | |
1099 | } | |
1100 | ||
4b58153d LP |
1101 | r = unit_acquire_invocation_id(u); |
1102 | if (r < 0) | |
1103 | return r; | |
1104 | ||
7eba1463 | 1105 | mount_cycle_clear(m); |
8d567588 | 1106 | mount_enter_mounting(m); |
7eba1463 | 1107 | |
82a2b6bb | 1108 | return 1; |
e537352b LP |
1109 | } |
1110 | ||
1111 | static int mount_stop(Unit *u) { | |
1112 | Mount *m = MOUNT(u); | |
1113 | ||
1114 | assert(m); | |
1115 | ||
22af0e58 LP |
1116 | switch (m->state) { |
1117 | ||
1118 | case MOUNT_UNMOUNTING: | |
1119 | case MOUNT_UNMOUNTING_SIGKILL: | |
1120 | case MOUNT_UNMOUNTING_SIGTERM: | |
1121 | /* Already on it */ | |
e537352b LP |
1122 | return 0; |
1123 | ||
22af0e58 LP |
1124 | case MOUNT_MOUNTING: |
1125 | case MOUNT_MOUNTING_DONE: | |
1126 | case MOUNT_REMOUNTING: | |
1127 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1128 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1129 | return 0; | |
e537352b | 1130 | |
22af0e58 LP |
1131 | case MOUNT_REMOUNTING_SIGTERM: |
1132 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1133 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1134 | return 0; | |
1135 | ||
1136 | case MOUNT_REMOUNTING_SIGKILL: | |
1137 | /* as above */ | |
1138 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1139 | return 0; | |
1140 | ||
1141 | case MOUNT_MOUNTED: | |
1142 | mount_enter_unmounting(m); | |
1143 | return 1; | |
1144 | ||
1145 | default: | |
1146 | assert_not_reached("Unexpected state."); | |
1147 | } | |
e537352b LP |
1148 | } |
1149 | ||
1150 | static int mount_reload(Unit *u) { | |
1151 | Mount *m = MOUNT(u); | |
1152 | ||
1153 | assert(m); | |
e537352b LP |
1154 | assert(m->state == MOUNT_MOUNTED); |
1155 | ||
9d2f5178 | 1156 | mount_enter_remounting(m); |
22af0e58 | 1157 | |
2d018ae2 | 1158 | return 1; |
e537352b LP |
1159 | } |
1160 | ||
a16e1123 LP |
1161 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1162 | Mount *m = MOUNT(u); | |
1163 | ||
1164 | assert(m); | |
1165 | assert(f); | |
1166 | assert(fds); | |
1167 | ||
d68c645b LP |
1168 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1169 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1170 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1171 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1172 | |
1173 | if (m->control_pid > 0) | |
d68c645b | 1174 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1175 | |
1176 | if (m->control_command_id >= 0) | |
d68c645b | 1177 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1178 | |
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1183 | Mount *m = MOUNT(u); | |
2c09fb81 | 1184 | int r; |
a16e1123 LP |
1185 | |
1186 | assert(u); | |
1187 | assert(key); | |
1188 | assert(value); | |
1189 | assert(fds); | |
1190 | ||
1191 | if (streq(key, "state")) { | |
1192 | MountState state; | |
1193 | ||
1194 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1195 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1196 | else |
1197 | m->deserialized_state = state; | |
2c09fb81 | 1198 | |
9d2f5178 LP |
1199 | } else if (streq(key, "result")) { |
1200 | MountResult f; | |
a16e1123 | 1201 | |
9d2f5178 LP |
1202 | f = mount_result_from_string(value); |
1203 | if (f < 0) | |
f2341e0a | 1204 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1205 | else if (f != MOUNT_SUCCESS) |
1206 | m->result = f; | |
1207 | ||
1208 | } else if (streq(key, "reload-result")) { | |
1209 | MountResult f; | |
1210 | ||
1211 | f = mount_result_from_string(value); | |
1212 | if (f < 0) | |
f2341e0a | 1213 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1214 | else if (f != MOUNT_SUCCESS) |
1215 | m->reload_result = f; | |
a16e1123 | 1216 | |
2c09fb81 LP |
1217 | } else if (streq(key, "n-retry-umount")) { |
1218 | ||
1219 | r = safe_atou(value, &m->n_retry_umount); | |
1220 | if (r < 0) | |
1221 | log_unit_debug(u, "Failed to parse n-retry-umount value: %s", value); | |
1222 | ||
a16e1123 | 1223 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1224 | |
3f459cd9 | 1225 | if (parse_pid(value, &m->control_pid) < 0) |
f2341e0a | 1226 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
3f459cd9 | 1227 | |
a16e1123 LP |
1228 | } else if (streq(key, "control-command")) { |
1229 | MountExecCommand id; | |
1230 | ||
f2341e0a LP |
1231 | id = mount_exec_command_from_string(value); |
1232 | if (id < 0) | |
1233 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1234 | else { |
1235 | m->control_command_id = id; | |
1236 | m->control_command = m->exec_command + id; | |
1237 | } | |
a16e1123 | 1238 | } else |
f2341e0a | 1239 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1240 | |
1241 | return 0; | |
1242 | } | |
1243 | ||
44a6b1b6 | 1244 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1245 | assert(u); |
1246 | ||
1247 | return state_translation_table[MOUNT(u)->state]; | |
1248 | } | |
1249 | ||
44a6b1b6 | 1250 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1251 | assert(u); |
1252 | ||
a16e1123 | 1253 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1254 | } |
1255 | ||
f2f725e5 | 1256 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1257 | Mount *m = MOUNT(u); |
1258 | ||
1259 | assert(m); | |
1260 | ||
f2f725e5 ZJS |
1261 | if (m->from_proc_self_mountinfo) |
1262 | return false; | |
1263 | ||
1264 | return true; | |
701cc384 LP |
1265 | } |
1266 | ||
e537352b LP |
1267 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1268 | Mount *m = MOUNT(u); | |
9d2f5178 | 1269 | MountResult f; |
e537352b LP |
1270 | |
1271 | assert(m); | |
1272 | assert(pid >= 0); | |
1273 | ||
8c47c732 LP |
1274 | if (pid != m->control_pid) |
1275 | return; | |
e537352b | 1276 | |
e537352b LP |
1277 | m->control_pid = 0; |
1278 | ||
1f0958f6 | 1279 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1280 | f = MOUNT_SUCCESS; |
1281 | else if (code == CLD_EXITED) | |
1282 | f = MOUNT_FAILURE_EXIT_CODE; | |
1283 | else if (code == CLD_KILLED) | |
1284 | f = MOUNT_FAILURE_SIGNAL; | |
1285 | else if (code == CLD_DUMPED) | |
1286 | f = MOUNT_FAILURE_CORE_DUMP; | |
1287 | else | |
1288 | assert_not_reached("Unknown code"); | |
1289 | ||
850b7410 LP |
1290 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1291 | mount_set_reload_result(m, f); | |
1292 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1293 | m->result = f; |
8c47c732 | 1294 | |
a16e1123 | 1295 | if (m->control_command) { |
6ea832a2 | 1296 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1297 | |
a16e1123 LP |
1298 | m->control_command = NULL; |
1299 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1300 | } | |
1301 | ||
91bbd9b7 LP |
1302 | unit_log_process_exit( |
1303 | u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1304 | "Mount process", | |
1305 | mount_exec_command_to_string(m->control_command_id), | |
1306 | code, status); | |
e537352b | 1307 | |
006aabbd AJ |
1308 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1309 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1310 | |
1311 | switch (m->state) { | |
1312 | ||
1313 | case MOUNT_MOUNTING: | |
006aabbd | 1314 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1315 | |
006aabbd AJ |
1316 | if (f == MOUNT_SUCCESS) { |
1317 | /* Either /bin/mount has an unexpected definition of success, | |
1318 | * or someone raced us and we lost. */ | |
1319 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1320 | f = MOUNT_FAILURE_PROTOCOL; | |
1321 | } | |
1322 | mount_enter_dead(m, f); | |
1323 | break; | |
1324 | ||
1325 | case MOUNT_MOUNTING_DONE: | |
1326 | mount_enter_mounted(m, f); | |
e537352b LP |
1327 | break; |
1328 | ||
e2f3b44c | 1329 | case MOUNT_REMOUNTING: |
e2f3b44c | 1330 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1331 | case MOUNT_REMOUNTING_SIGKILL: |
1332 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1333 | break; |
1334 | ||
e537352b | 1335 | case MOUNT_UNMOUNTING: |
e537352b | 1336 | |
3cc96856 | 1337 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1338 | |
1339 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1340 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1341 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1342 | |
1343 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1344 | log_unit_debug(u, "Mount still present, trying again."); | |
1345 | m->n_retry_umount++; | |
1346 | mount_enter_unmounting(m); | |
1347 | } else { | |
006aabbd | 1348 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1349 | mount_enter_mounted(m, f); |
1350 | } | |
1351 | } else | |
3cc96856 | 1352 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1353 | |
e537352b | 1354 | break; |
57018361 AJ |
1355 | |
1356 | case MOUNT_UNMOUNTING_SIGKILL: | |
1357 | case MOUNT_UNMOUNTING_SIGTERM: | |
1358 | mount_enter_dead_or_mounted(m, f); | |
1359 | break; | |
e537352b LP |
1360 | |
1361 | default: | |
1362 | assert_not_reached("Uh, control process died at wrong time."); | |
1363 | } | |
c4e2ceae LP |
1364 | |
1365 | /* Notify clients about changed exit status */ | |
1366 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1367 | } |
1368 | ||
718db961 LP |
1369 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1370 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1371 | |
1372 | assert(m); | |
718db961 | 1373 | assert(m->timer_event_source == source); |
e537352b LP |
1374 | |
1375 | switch (m->state) { | |
1376 | ||
1377 | case MOUNT_MOUNTING: | |
1378 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1379 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1380 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1381 | break; |
1382 | ||
1383 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1384 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1385 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1386 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1387 | break; |
1388 | ||
22af0e58 LP |
1389 | case MOUNT_REMOUNTING_SIGTERM: |
1390 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1391 | |
4819ff03 | 1392 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1393 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1394 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1395 | } else { |
22af0e58 LP |
1396 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1397 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1398 | } |
e537352b LP |
1399 | break; |
1400 | ||
22af0e58 LP |
1401 | case MOUNT_REMOUNTING_SIGKILL: |
1402 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1403 | |
22af0e58 LP |
1404 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1405 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1406 | break; | |
1407 | ||
1408 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1409 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1410 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1411 | break; |
1412 | ||
1413 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1414 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1415 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1416 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1417 | } else { |
22af0e58 LP |
1418 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1419 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1420 | } |
e537352b LP |
1421 | break; |
1422 | ||
e537352b | 1423 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1424 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1425 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1426 | break; |
1427 | ||
1428 | default: | |
1429 | assert_not_reached("Timeout at wrong time."); | |
1430 | } | |
718db961 LP |
1431 | |
1432 | return 0; | |
e537352b LP |
1433 | } |
1434 | ||
bbee24bc LP |
1435 | static int update_parameters_proc_self_mount_info( |
1436 | Mount *m, | |
1437 | const char *what, | |
1438 | const char *options, | |
1439 | const char *fstype) { | |
1440 | ||
1441 | MountParameters *p; | |
1442 | int r, q, w; | |
1443 | ||
1444 | p = &m->parameters_proc_self_mountinfo; | |
1445 | ||
1446 | r = free_and_strdup(&p->what, what); | |
1447 | if (r < 0) | |
1448 | return r; | |
1449 | ||
1450 | q = free_and_strdup(&p->options, options); | |
1451 | if (q < 0) | |
1452 | return q; | |
1453 | ||
1454 | w = free_and_strdup(&p->fstype, fstype); | |
1455 | if (w < 0) | |
1456 | return w; | |
1457 | ||
1458 | return r > 0 || q > 0 || w > 0; | |
1459 | } | |
1460 | ||
03b8cfed | 1461 | static int mount_setup_new_unit( |
839ee058 LP |
1462 | Manager *m, |
1463 | const char *name, | |
03b8cfed FB |
1464 | const char *what, |
1465 | const char *where, | |
1466 | const char *options, | |
1467 | const char *fstype, | |
ec88d1ea | 1468 | MountProcFlags *ret_flags, |
839ee058 | 1469 | Unit **ret) { |
03b8cfed | 1470 | |
839ee058 | 1471 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1472 | int r; |
03b8cfed | 1473 | |
839ee058 LP |
1474 | assert(m); |
1475 | assert(name); | |
ec88d1ea | 1476 | assert(ret_flags); |
839ee058 LP |
1477 | assert(ret); |
1478 | ||
1479 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1480 | if (r < 0) | |
1481 | return r; | |
03b8cfed | 1482 | |
e10fe042 LP |
1483 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1484 | if (r < 0) | |
1485 | return r; | |
03b8cfed | 1486 | |
e10fe042 LP |
1487 | r = free_and_strdup(&MOUNT(u)->where, where); |
1488 | if (r < 0) | |
1489 | return r; | |
03b8cfed | 1490 | |
bbee24bc LP |
1491 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1492 | if (r < 0) | |
1493 | return r; | |
03b8cfed | 1494 | |
6d7e89b0 LP |
1495 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the time we load |
1496 | * the unit file for it (and thus add in extra deps right after) we know what source to attributes the deps | |
1497 | * to.*/ | |
1498 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1499 | ||
1500 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything else is | |
1501 | * loaded in now. */ | |
cfcd4318 | 1502 | unit_add_to_load_queue(u); |
26e35b16 | 1503 | |
ec88d1ea | 1504 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1505 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1506 | return 0; |
1507 | } | |
1508 | ||
1509 | static int mount_setup_existing_unit( | |
1510 | Unit *u, | |
1511 | const char *what, | |
1512 | const char *where, | |
1513 | const char *options, | |
1514 | const char *fstype, | |
ec88d1ea | 1515 | MountProcFlags *ret_flags) { |
03b8cfed | 1516 | |
ec88d1ea | 1517 | MountProcFlags flags = MOUNT_PROC_IS_MOUNTED; |
bbee24bc | 1518 | int r; |
03b8cfed FB |
1519 | |
1520 | assert(u); | |
1521 | assert(flags); | |
1522 | ||
1523 | if (!MOUNT(u)->where) { | |
1524 | MOUNT(u)->where = strdup(where); | |
1525 | if (!MOUNT(u)->where) | |
1526 | return -ENOMEM; | |
1527 | } | |
1528 | ||
bbee24bc LP |
1529 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1530 | if (r < 0) | |
1531 | return r; | |
ec88d1ea LP |
1532 | if (r > 0) |
1533 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1534 | |
d253a45e | 1535 | if (!MOUNT(u)->from_proc_self_mountinfo || FLAGS_SET(MOUNT(u)->proc_flags, MOUNT_PROC_JUST_MOUNTED)) |
ec88d1ea | 1536 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1537 | |
1538 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1539 | |
f8064c4f LP |
1540 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1541 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1542 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1543 | u->load_state = UNIT_LOADED; |
1544 | u->load_error = 0; | |
1545 | ||
ec88d1ea | 1546 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1547 | } |
1548 | ||
ec88d1ea | 1549 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1550 | /* If things changed, then make sure that all deps are regenerated. Let's |
1551 | * first remove all automatic deps, and then add in the new ones. */ | |
1552 | ||
1553 | unit_remove_dependencies(u, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
1554 | ||
1555 | r = mount_add_extras(MOUNT(u)); | |
1556 | if (r < 0) | |
1557 | return r; | |
1558 | } | |
03b8cfed | 1559 | |
ec88d1ea | 1560 | *ret_flags = flags; |
03b8cfed FB |
1561 | return 0; |
1562 | } | |
1563 | ||
628c89cc | 1564 | static int mount_setup_unit( |
e537352b LP |
1565 | Manager *m, |
1566 | const char *what, | |
1567 | const char *where, | |
1568 | const char *options, | |
1569 | const char *fstype, | |
e537352b | 1570 | bool set_flags) { |
057d9ab8 | 1571 | |
03b8cfed | 1572 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1573 | MountProcFlags flags; |
057d9ab8 LP |
1574 | Unit *u; |
1575 | int r; | |
b08d03ff | 1576 | |
f50e0a01 | 1577 | assert(m); |
b08d03ff LP |
1578 | assert(what); |
1579 | assert(where); | |
e537352b LP |
1580 | assert(options); |
1581 | assert(fstype); | |
1582 | ||
e537352b LP |
1583 | /* Ignore API mount points. They should never be referenced in |
1584 | * dependencies ever. */ | |
33ff02c9 | 1585 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1586 | return 0; |
b08d03ff | 1587 | |
8d567588 LP |
1588 | if (streq(fstype, "autofs")) |
1589 | return 0; | |
1590 | ||
4e85aff4 LP |
1591 | /* probably some kind of swap, ignore */ |
1592 | if (!is_path(where)) | |
b08d03ff LP |
1593 | return 0; |
1594 | ||
7410616c LP |
1595 | r = unit_name_from_path(where, ".mount", &e); |
1596 | if (r < 0) | |
60b8c203 | 1597 | return log_error_errno(r, "Failed to generate unit name from path '%s': %m", where); |
b08d03ff | 1598 | |
7d17cfbc | 1599 | u = manager_get_unit(m, e); |
839ee058 | 1600 | if (u) |
03b8cfed | 1601 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 LP |
1602 | else |
1603 | /* First time we see this mount point meaning that it's not been initiated by a mount unit but rather | |
1604 | * by the sysadmin having called mount(8) directly. */ | |
1605 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); | |
03b8cfed | 1606 | if (r < 0) |
60b8c203 | 1607 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
ff5f34d0 | 1608 | |
ec88d1ea LP |
1609 | /* If the mount changed properties or state, let's notify our clients */ |
1610 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1611 | unit_add_to_dbus_queue(u); |
c1e1601e | 1612 | |
ec88d1ea LP |
1613 | if (set_flags) |
1614 | MOUNT(u)->proc_flags = flags; | |
1615 | ||
b08d03ff | 1616 | return 0; |
b08d03ff LP |
1617 | } |
1618 | ||
ef734fd6 | 1619 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1620 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1621 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
ba0d56f5 | 1622 | int r; |
b08d03ff LP |
1623 | |
1624 | assert(m); | |
1625 | ||
628c89cc | 1626 | t = mnt_new_table(); |
628c89cc | 1627 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1628 | if (!t || !i) |
628c89cc LP |
1629 | return log_oom(); |
1630 | ||
1631 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1632 | if (r < 0) |
628c89cc | 1633 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1634 | |
5cca8def | 1635 | for (;;) { |
95b862b0 | 1636 | struct libmnt_fs *fs; |
8d3ae2bd | 1637 | const char *device, *path, *options, *fstype; |
527b7a42 | 1638 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1639 | int k; |
b08d03ff | 1640 | |
628c89cc | 1641 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1642 | if (k == 1) |
1643 | break; | |
628c89cc LP |
1644 | if (k < 0) |
1645 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1646 | |
8d3ae2bd CL |
1647 | device = mnt_fs_get_source(fs); |
1648 | path = mnt_fs_get_target(fs); | |
1649 | options = mnt_fs_get_options(fs); | |
1650 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1651 | |
c0a7f8d3 DM |
1652 | if (!device || !path) |
1653 | continue; | |
1654 | ||
527b7a42 | 1655 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1656 | return log_oom(); |
1657 | ||
527b7a42 | 1658 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1659 | return log_oom(); |
b08d03ff | 1660 | |
485ae697 | 1661 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1662 | |
ba0d56f5 | 1663 | (void) mount_setup_unit(m, d, p, options, fstype, set_flags); |
b08d03ff LP |
1664 | } |
1665 | ||
ba0d56f5 | 1666 | return 0; |
e537352b LP |
1667 | } |
1668 | ||
1669 | static void mount_shutdown(Manager *m) { | |
1670 | assert(m); | |
1671 | ||
718db961 LP |
1672 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1673 | ||
d379d442 KZ |
1674 | mnt_unref_monitor(m->mount_monitor); |
1675 | m->mount_monitor = NULL; | |
b08d03ff LP |
1676 | } |
1677 | ||
7a7821c8 | 1678 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1679 | Mount *m = MOUNT(u); |
7a7821c8 | 1680 | usec_t t; |
68db7a3b ZJS |
1681 | int r; |
1682 | ||
1683 | if (!m->timer_event_source) | |
1684 | return 0; | |
1685 | ||
7a7821c8 | 1686 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1687 | if (r < 0) |
1688 | return r; | |
7a7821c8 LP |
1689 | if (t == USEC_INFINITY) |
1690 | return 0; | |
68db7a3b | 1691 | |
7a7821c8 | 1692 | *timeout = t; |
68db7a3b ZJS |
1693 | return 1; |
1694 | } | |
1695 | ||
04eb582a | 1696 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1697 | Unit *u; |
1698 | int r; | |
1699 | ||
1700 | assert(m); | |
1701 | ||
1702 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1703 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1704 | ||
1705 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1706 | if (!u) { | |
a581e45a | 1707 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1708 | if (r < 0) { |
1709 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1710 | return; | |
1711 | } | |
11222d0f LP |
1712 | } |
1713 | ||
1714 | u->perpetual = true; | |
1715 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1716 | ||
1717 | unit_add_to_load_queue(u); | |
1718 | unit_add_to_dbus_queue(u); | |
1719 | } | |
1720 | ||
1721 | static bool mount_is_mounted(Mount *m) { | |
1722 | assert(m); | |
1723 | ||
ec88d1ea | 1724 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1725 | } |
1726 | ||
ba64af90 | 1727 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1728 | int r; |
d379d442 | 1729 | |
b08d03ff LP |
1730 | assert(m); |
1731 | ||
8d3ae2bd CL |
1732 | mnt_init_debug(0); |
1733 | ||
d379d442 KZ |
1734 | if (!m->mount_monitor) { |
1735 | int fd; | |
ef734fd6 | 1736 | |
d379d442 KZ |
1737 | m->mount_monitor = mnt_new_monitor(); |
1738 | if (!m->mount_monitor) { | |
ba64af90 | 1739 | log_oom(); |
718db961 | 1740 | goto fail; |
d379d442 | 1741 | } |
29083707 | 1742 | |
d379d442 | 1743 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1744 | if (r < 0) { |
1745 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1746 | goto fail; |
ba64af90 LP |
1747 | } |
1748 | ||
d379d442 | 1749 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1750 | if (r < 0) { |
1751 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1752 | goto fail; |
ba64af90 | 1753 | } |
90598531 | 1754 | |
d379d442 KZ |
1755 | /* mnt_unref_monitor() will close the fd */ |
1756 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1757 | if (r < 0) { |
1758 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1759 | goto fail; |
ba64af90 | 1760 | } |
befb6d54 | 1761 | |
d379d442 | 1762 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1763 | if (r < 0) { |
1764 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1765 | goto fail; |
ba64af90 | 1766 | } |
befb6d54 | 1767 | |
83231637 | 1768 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1769 | if (r < 0) { |
1770 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1771 | goto fail; |
ba64af90 | 1772 | } |
7dfbe2e3 | 1773 | |
d379d442 | 1774 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1775 | } |
1776 | ||
e62d8c39 ZJS |
1777 | r = mount_load_proc_self_mountinfo(m, false); |
1778 | if (r < 0) | |
b08d03ff LP |
1779 | goto fail; |
1780 | ||
ba64af90 | 1781 | return; |
b08d03ff LP |
1782 | |
1783 | fail: | |
1784 | mount_shutdown(m); | |
5cb5a6ff LP |
1785 | } |
1786 | ||
718db961 | 1787 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
ec8126d7 | 1788 | _cleanup_set_free_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1789 | Manager *m = userdata; |
ec8126d7 ZJS |
1790 | const char *what; |
1791 | Iterator i; | |
1792 | Unit *u; | |
ef734fd6 LP |
1793 | int r; |
1794 | ||
1795 | assert(m); | |
d379d442 | 1796 | assert(revents & EPOLLIN); |
ef734fd6 | 1797 | |
d379d442 | 1798 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1799 | bool rescan = false; |
befb6d54 | 1800 | |
d379d442 KZ |
1801 | /* Drain all events and verify that the event is valid. |
1802 | * | |
1803 | * Note that libmount also monitors /run/mount mkdir if the | |
1804 | * directory does not exist yet. The mkdir may generate event | |
1805 | * which is irrelevant for us. | |
1806 | * | |
1807 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1808 | do { | |
1809 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1810 | if (r == 0) | |
1811 | rescan = true; | |
1812 | else if (r < 0) | |
5e1ee764 | 1813 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1814 | } while (r == 0); |
1815 | ||
1816 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1817 | if (!rescan) |
1818 | return 0; | |
1819 | } | |
ef734fd6 | 1820 | |
4f0eedb7 ZJS |
1821 | r = mount_load_proc_self_mountinfo(m, true); |
1822 | if (r < 0) { | |
e537352b | 1823 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
1824 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
1825 | MOUNT(u)->proc_flags = 0; | |
e537352b | 1826 | |
ec8126d7 | 1827 | return 0; |
ef734fd6 LP |
1828 | } |
1829 | ||
1830 | manager_dispatch_load_queue(m); | |
1831 | ||
595ed347 MS |
1832 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1833 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1834 | |
11222d0f | 1835 | if (!mount_is_mounted(mount)) { |
e537352b | 1836 | |
394763f6 LP |
1837 | /* A mount point is not around right now. It |
1838 | * might be gone, or might never have | |
1839 | * existed. */ | |
1840 | ||
1841 | if (mount->from_proc_self_mountinfo && | |
1842 | mount->parameters_proc_self_mountinfo.what) { | |
1843 | ||
1844 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1845 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
b6418dc9 | 1846 | set_put_strdup(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 LP |
1847 | log_oom(); /* we don't care too much about OOM here... */ |
1848 | } | |
fcd8b266 | 1849 | |
ef734fd6 | 1850 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1851 | |
1852 | switch (mount->state) { | |
1853 | ||
1854 | case MOUNT_MOUNTED: | |
7eba1463 | 1855 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 1856 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1857 | break; |
1858 | ||
1859 | default: | |
e537352b | 1860 | break; |
e537352b LP |
1861 | } |
1862 | ||
ec88d1ea | 1863 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 1864 | |
fcd8b266 | 1865 | /* A mount point was added or changed */ |
e537352b LP |
1866 | |
1867 | switch (mount->state) { | |
1868 | ||
1869 | case MOUNT_DEAD: | |
fdf20a31 | 1870 | case MOUNT_FAILED: |
4b58153d LP |
1871 | |
1872 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1873 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
1874 | (void) unit_acquire_invocation_id(u); |
1875 | mount_cycle_clear(mount); | |
9d2f5178 | 1876 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1877 | break; |
1878 | ||
1879 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1880 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1881 | break; |
1882 | ||
1883 | default: | |
1884 | /* Nothing really changed, but let's | |
1885 | * issue an notification call | |
1886 | * nonetheless, in case somebody is | |
1887 | * waiting for this. (e.g. file system | |
1888 | * ro/rw remounts.) */ | |
1889 | mount_set_state(mount, mount->state); | |
1890 | break; | |
1891 | } | |
394763f6 | 1892 | } |
fcd8b266 | 1893 | |
11222d0f | 1894 | if (mount_is_mounted(mount) && |
394763f6 LP |
1895 | mount->from_proc_self_mountinfo && |
1896 | mount->parameters_proc_self_mountinfo.what) { | |
b6418dc9 | 1897 | /* Track devices currently used */ |
fcd8b266 | 1898 | |
548f6937 | 1899 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
b6418dc9 | 1900 | set_put_strdup(around, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 1901 | log_oom(); |
e537352b LP |
1902 | } |
1903 | ||
1904 | /* Reset the flags for later calls */ | |
ec88d1ea | 1905 | mount->proc_flags = 0; |
e537352b | 1906 | } |
718db961 | 1907 | |
fcd8b266 LP |
1908 | SET_FOREACH(what, gone, i) { |
1909 | if (set_contains(around, what)) | |
1910 | continue; | |
1911 | ||
1912 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1913 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 | 1914 | } |
ec8126d7 ZJS |
1915 | |
1916 | return 0; | |
e537352b LP |
1917 | } |
1918 | ||
fdf20a31 | 1919 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1920 | Mount *m = MOUNT(u); |
1921 | ||
1922 | assert(m); | |
1923 | ||
fdf20a31 | 1924 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1925 | mount_set_state(m, MOUNT_DEAD); |
1926 | ||
9d2f5178 LP |
1927 | m->result = MOUNT_SUCCESS; |
1928 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1929 | } |
1930 | ||
718db961 | 1931 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1932 | Mount *m = MOUNT(u); |
1933 | ||
1934 | assert(m); | |
1935 | ||
814cc562 | 1936 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1937 | } |
1938 | ||
291d565a LP |
1939 | static int mount_control_pid(Unit *u) { |
1940 | Mount *m = MOUNT(u); | |
1941 | ||
1942 | assert(m); | |
1943 | ||
1944 | return m->control_pid; | |
1945 | } | |
1946 | ||
a16e1123 LP |
1947 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1948 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1949 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1950 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1951 | }; | |
1952 | ||
1953 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1954 | ||
9d2f5178 LP |
1955 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1956 | [MOUNT_SUCCESS] = "success", | |
1957 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1958 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1959 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1960 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1961 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1962 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1963 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1964 | }; |
1965 | ||
1966 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1967 | ||
87f0e418 | 1968 | const UnitVTable mount_vtable = { |
7d17cfbc | 1969 | .object_size = sizeof(Mount), |
718db961 LP |
1970 | .exec_context_offset = offsetof(Mount, exec_context), |
1971 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1972 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1973 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1974 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1975 | |
f975e971 LP |
1976 | .sections = |
1977 | "Unit\0" | |
1978 | "Mount\0" | |
1979 | "Install\0", | |
4ad49000 | 1980 | .private_section = "Mount", |
71645aca | 1981 | |
e537352b LP |
1982 | .init = mount_init, |
1983 | .load = mount_load, | |
034c6ed7 | 1984 | .done = mount_done, |
e537352b | 1985 | |
f50e0a01 LP |
1986 | .coldplug = mount_coldplug, |
1987 | ||
034c6ed7 | 1988 | .dump = mount_dump, |
5cb5a6ff | 1989 | |
e537352b LP |
1990 | .start = mount_start, |
1991 | .stop = mount_stop, | |
1992 | .reload = mount_reload, | |
1993 | ||
8a0867d6 LP |
1994 | .kill = mount_kill, |
1995 | ||
a16e1123 LP |
1996 | .serialize = mount_serialize, |
1997 | .deserialize_item = mount_deserialize_item, | |
1998 | ||
f50e0a01 | 1999 | .active_state = mount_active_state, |
10a94420 | 2000 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 2001 | |
f2f725e5 | 2002 | .may_gc = mount_may_gc, |
701cc384 | 2003 | |
e537352b | 2004 | .sigchld_event = mount_sigchld_event, |
e537352b | 2005 | |
fdf20a31 | 2006 | .reset_failed = mount_reset_failed, |
291d565a LP |
2007 | |
2008 | .control_pid = mount_control_pid, | |
5632e374 | 2009 | |
718db961 | 2010 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
2011 | .bus_set_property = bus_mount_set_property, |
2012 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 2013 | |
68db7a3b ZJS |
2014 | .get_timeout = mount_get_timeout, |
2015 | ||
0e252f6b TG |
2016 | .can_transient = true, |
2017 | ||
04eb582a | 2018 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2019 | .enumerate = mount_enumerate, |
c6918296 MS |
2020 | .shutdown = mount_shutdown, |
2021 | ||
2022 | .status_message_formats = { | |
2023 | .starting_stopping = { | |
2024 | [0] = "Mounting %s...", | |
2025 | [1] = "Unmounting %s...", | |
2026 | }, | |
2027 | .finished_start_job = { | |
2028 | [JOB_DONE] = "Mounted %s.", | |
2029 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2030 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2031 | }, | |
2032 | .finished_stop_job = { | |
2033 | [JOB_DONE] = "Unmounted %s.", | |
2034 | [JOB_FAILED] = "Failed unmounting %s.", | |
2035 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2036 | }, | |
2037 | }, | |
5cb5a6ff | 2038 | }; |