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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 | ||
ebc8968b FB |
104 | static bool mount_is_bound_to_device(const Mount *m) { |
105 | const MountParameters *p; | |
106 | ||
107 | if (m->from_fragment) | |
108 | return true; | |
109 | ||
110 | p = &m->parameters_proc_self_mountinfo; | |
111 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
112 | } | |
113 | ||
06e457b1 | 114 | static bool mount_needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
115 | assert(p); |
116 | ||
06e457b1 LP |
117 | /* Quotas are not enabled on network filesystems, but we want them, for example, on storage connected via |
118 | * iscsi. We hence don't use mount_is_network() here, as that would also return true for _netdev devices. */ | |
11041c84 | 119 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
120 | return false; |
121 | ||
122 | if (mount_is_bind(p)) | |
123 | return false; | |
124 | ||
d15d0333 ZJS |
125 | return fstab_test_option(p->options, |
126 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
127 | } |
128 | ||
a16e1123 LP |
129 | static void mount_init(Unit *u) { |
130 | Mount *m = MOUNT(u); | |
5cb5a6ff | 131 | |
a16e1123 | 132 | assert(u); |
ac155bb8 | 133 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 134 | |
1f19a534 | 135 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
136 | |
137 | m->exec_context.std_output = u->manager->default_std_output; | |
138 | m->exec_context.std_error = u->manager->default_std_error; | |
139 | ||
3e5235b0 LP |
140 | m->directory_mode = 0755; |
141 | ||
f00929ad DJL |
142 | /* We need to make sure that /usr/bin/mount is always called |
143 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
144 | * side doesn't send us another mount request while we are |
145 | * already trying to comply its last one. */ | |
74922904 | 146 | m->exec_context.same_pgrp = true; |
8d567588 | 147 | |
a16e1123 | 148 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 149 | |
5bcb0f2b | 150 | u->ignore_on_isolate = true; |
8d567588 LP |
151 | } |
152 | ||
36c16a7c | 153 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
154 | int r; |
155 | ||
156 | assert(m); | |
157 | ||
718db961 | 158 | if (m->timer_event_source) { |
36c16a7c | 159 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
160 | if (r < 0) |
161 | return r; | |
162 | ||
163 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
164 | } | |
165 | ||
36c16a7c LP |
166 | if (usec == USEC_INFINITY) |
167 | return 0; | |
168 | ||
7dfbe2e3 | 169 | r = sd_event_add_time( |
6a0f1f6d LP |
170 | UNIT(m)->manager->event, |
171 | &m->timer_event_source, | |
172 | CLOCK_MONOTONIC, | |
36c16a7c | 173 | usec, 0, |
6a0f1f6d | 174 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
175 | if (r < 0) |
176 | return r; | |
177 | ||
178 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
179 | ||
180 | return 0; | |
718db961 LP |
181 | } |
182 | ||
a16e1123 | 183 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
184 | assert(m); |
185 | ||
186 | if (m->control_pid <= 0) | |
187 | return; | |
188 | ||
189 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
190 | m->control_pid = 0; | |
191 | } | |
192 | ||
e537352b LP |
193 | static void mount_parameters_done(MountParameters *p) { |
194 | assert(p); | |
195 | ||
a26592cf LP |
196 | p->what = mfree(p->what); |
197 | p->options = mfree(p->options); | |
198 | p->fstype = mfree(p->fstype); | |
e537352b LP |
199 | } |
200 | ||
87f0e418 | 201 | static void mount_done(Unit *u) { |
ef734fd6 | 202 | Mount *m = MOUNT(u); |
034c6ed7 | 203 | |
ef734fd6 | 204 | assert(m); |
034c6ed7 | 205 | |
a1e58e8e | 206 | m->where = mfree(m->where); |
f50e0a01 | 207 | |
e537352b LP |
208 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
209 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 210 | |
e8a565cb | 211 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
212 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
213 | m->control_command = NULL; | |
f50e0a01 | 214 | |
29206d46 LP |
215 | dynamic_creds_unref(&m->dynamic_creds); |
216 | ||
a16e1123 | 217 | mount_unwatch_control_pid(m); |
f50e0a01 | 218 | |
718db961 | 219 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
220 | } |
221 | ||
44a6b1b6 | 222 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
223 | assert(m); |
224 | ||
225 | if (m->from_fragment) | |
226 | return &m->parameters_fragment; | |
cb39ed3f LP |
227 | |
228 | return NULL; | |
229 | } | |
230 | ||
44a6b1b6 | 231 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
232 | assert(m); |
233 | ||
234 | if (m->from_proc_self_mountinfo) | |
235 | return &m->parameters_proc_self_mountinfo; | |
236 | ||
6b1dc2bd | 237 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
238 | } |
239 | ||
b7bbf890 ZJS |
240 | static int update_parameters_proc_self_mount_info( |
241 | Mount *m, | |
242 | const char *what, | |
243 | const char *options, | |
244 | const char *fstype) { | |
245 | ||
246 | MountParameters *p; | |
247 | int r, q, w; | |
248 | ||
249 | p = &m->parameters_proc_self_mountinfo; | |
250 | ||
251 | r = free_and_strdup(&p->what, what); | |
252 | if (r < 0) | |
253 | return r; | |
254 | ||
255 | q = free_and_strdup(&p->options, options); | |
256 | if (q < 0) | |
257 | return q; | |
258 | ||
259 | w = free_and_strdup(&p->fstype, fstype); | |
260 | if (w < 0) | |
261 | return w; | |
262 | ||
263 | return r > 0 || q > 0 || w > 0; | |
264 | } | |
265 | ||
eef85c4a | 266 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 267 | MountParameters *pm; |
ac155bb8 | 268 | Unit *other; |
a57f7e2c LP |
269 | Iterator i; |
270 | Set *s; | |
b08d03ff LP |
271 | int r; |
272 | ||
6e2ef85b | 273 | assert(m); |
b08d03ff | 274 | |
a57f7e2c | 275 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
276 | _cleanup_free_ char *parent = NULL; |
277 | ||
278 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
279 | |
280 | parent = dirname_malloc(m->where); | |
281 | if (!parent) | |
282 | return -ENOMEM; | |
01f78473 | 283 | |
eef85c4a | 284 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 285 | if (r < 0) |
01f78473 | 286 | return r; |
4f0eedb7 | 287 | } |
01f78473 | 288 | |
eef85c4a LP |
289 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
290 | * or a loop mount) to be available. */ | |
a57f7e2c | 291 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
292 | if (pm && pm->what && |
293 | path_is_absolute(pm->what) && | |
d3bd0986 | 294 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 295 | |
eef85c4a | 296 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 297 | if (r < 0) |
6e2ef85b | 298 | return r; |
4f0eedb7 | 299 | } |
b08d03ff | 300 | |
eef85c4a | 301 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
302 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
303 | SET_FOREACH(other, s, i) { | |
b08d03ff | 304 | |
a57f7e2c LP |
305 | if (other->load_state != UNIT_LOADED) |
306 | continue; | |
b08d03ff | 307 | |
a57f7e2c LP |
308 | if (other == UNIT(m)) |
309 | continue; | |
b08d03ff | 310 | |
eef85c4a | 311 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 312 | if (r < 0) |
6e2ef85b | 313 | return r; |
b08d03ff | 314 | |
a57f7e2c LP |
315 | if (UNIT(m)->fragment_path) { |
316 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 317 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
318 | if (r < 0) |
319 | return r; | |
320 | } | |
7c8fa05c LP |
321 | } |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
eef85c4a | 326 | static int mount_add_device_dependencies(Mount *m) { |
eef85c4a LP |
327 | UnitDependencyMask mask; |
328 | MountParameters *p; | |
ebc8968b | 329 | UnitDependency dep; |
9fff8a1f | 330 | int r; |
173a8d04 LP |
331 | |
332 | assert(m); | |
333 | ||
06e97888 | 334 | p = get_mount_parameters(m); |
6b1dc2bd | 335 | if (!p) |
173a8d04 LP |
336 | return 0; |
337 | ||
9fff8a1f | 338 | if (!p->what) |
173a8d04 | 339 | return 0; |
5c78d8e2 | 340 | |
dd144c63 LP |
341 | if (mount_is_bind(p)) |
342 | return 0; | |
343 | ||
344 | if (!is_device_path(p->what)) | |
345 | return 0; | |
346 | ||
7ba2711d LP |
347 | /* /dev/root is a really weird thing, it's not a real device, |
348 | * but just a path the kernel exports for the root file system | |
349 | * specified on the kernel command line. Ignore it here. */ | |
350 | if (path_equal(p->what, "/dev/root")) | |
351 | return 0; | |
352 | ||
dd144c63 LP |
353 | if (path_equal(m->where, "/")) |
354 | return 0; | |
355 | ||
ebc8968b FB |
356 | /* Mount units from /proc/self/mountinfo are not bound to devices |
357 | * by default since they're subject to races when devices are | |
358 | * unplugged. But the user can still force this dep with an | |
359 | * appropriate option (or udev property) so the mount units are | |
360 | * automatically stopped when the device disappears suddenly. */ | |
361 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
362 | ||
c52c2dc6 ZJS |
363 | /* We always use 'what' from /proc/self/mountinfo if mounted */ |
364 | mask = m->from_proc_self_mountinfo ? UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT : UNIT_DEPENDENCY_FILE; | |
eef85c4a | 365 | |
142b8142 | 366 | r = unit_add_node_dependency(UNIT(m), p->what, false, dep, mask); |
dd144c63 LP |
367 | if (r < 0) |
368 | return r; | |
9fff8a1f | 369 | |
9fff8a1f | 370 | return 0; |
173a8d04 LP |
371 | } |
372 | ||
eef85c4a LP |
373 | static int mount_add_quota_dependencies(Mount *m) { |
374 | UnitDependencyMask mask; | |
6b1dc2bd | 375 | MountParameters *p; |
eef85c4a | 376 | int r; |
6b1dc2bd LP |
377 | |
378 | assert(m); | |
379 | ||
463d0d15 | 380 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
381 | return 0; |
382 | ||
383 | p = get_mount_parameters_fragment(m); | |
384 | if (!p) | |
385 | return 0; | |
386 | ||
06e457b1 | 387 | if (!mount_needs_quota(p)) |
6b1dc2bd LP |
388 | return 0; |
389 | ||
eef85c4a LP |
390 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
391 | ||
5a724170 | 392 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
393 | if (r < 0) |
394 | return r; | |
395 | ||
5a724170 | 396 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
397 | if (r < 0) |
398 | return r; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
ad2706db | 403 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 404 | MountParameters *p; |
ad2706db | 405 | assert(m); |
88ac30a1 | 406 | |
ad2706db LP |
407 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
408 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
409 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
410 | ||
411 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
412 | return true; | |
413 | ||
414 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
415 | "/", | |
416 | "/usr")) | |
417 | return true; | |
88ac30a1 | 418 | |
ad2706db LP |
419 | if (PATH_STARTSWITH_SET(m->where, |
420 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
421 | "/proc", /* All of this is API VFS */ | |
422 | "/sys", /* … dito … */ | |
423 | "/dev")) /* … dito … */ | |
424 | return true; | |
425 | ||
426 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 427 | p = get_mount_parameters(m); |
ad2706db LP |
428 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
429 | return true; | |
88ac30a1 | 430 | |
ad2706db | 431 | return false; |
88ac30a1 TG |
432 | } |
433 | ||
2edd4434 | 434 | static int mount_add_default_dependencies(Mount *m) { |
d54bab90 | 435 | const char *after, *before; |
eef85c4a | 436 | UnitDependencyMask mask; |
9ddc4a26 | 437 | MountParameters *p; |
8c8203db | 438 | bool nofail; |
d54bab90 | 439 | int r; |
2edd4434 LP |
440 | |
441 | assert(m); | |
442 | ||
4c9ea260 LP |
443 | if (!UNIT(m)->default_dependencies) |
444 | return 0; | |
445 | ||
ad2706db LP |
446 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
447 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
448 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
449 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 450 | return 0; |
2edd4434 | 451 | |
874d3404 LP |
452 | p = get_mount_parameters(m); |
453 | if (!p) | |
6b1dc2bd LP |
454 | return 0; |
455 | ||
eef85c4a | 456 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
8c8203db | 457 | nofail = m->from_fragment ? fstab_test_yes_no_option(m->parameters_fragment.options, "nofail\0" "fail\0") : false; |
eef85c4a | 458 | |
e8d2f6cd | 459 | if (mount_is_network(p)) { |
ea0ec5ce LP |
460 | /* We order ourselves after network.target. This is |
461 | * primarily useful at shutdown: services that take | |
462 | * down the network should order themselves before | |
463 | * network.target, so that they are shut down only | |
464 | * after this mount unit is stopped. */ | |
6b1dc2bd | 465 | |
35d8c19a | 466 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
467 | if (r < 0) |
468 | return r; | |
a63a5c46 | 469 | |
ea0ec5ce LP |
470 | /* We pull in network-online.target, and order |
471 | * ourselves after it. This is useful at start-up to | |
472 | * actively pull in tools that want to be started | |
473 | * before we start mounting network file systems, and | |
474 | * whose purpose it is to delay this until the network | |
475 | * is "up". */ | |
476 | ||
5a724170 | 477 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
478 | if (r < 0) |
479 | return r; | |
ea0ec5ce LP |
480 | |
481 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
d54bab90 LP |
482 | before = SPECIAL_REMOTE_FS_TARGET; |
483 | } else { | |
ea0ec5ce | 484 | after = SPECIAL_LOCAL_FS_PRE_TARGET; |
d54bab90 LP |
485 | before = SPECIAL_LOCAL_FS_TARGET; |
486 | } | |
487 | ||
8c8203db YW |
488 | if (!nofail) { |
489 | r = unit_add_dependency_by_name(UNIT(m), UNIT_BEFORE, before, true, mask); | |
490 | if (r < 0) | |
491 | return r; | |
492 | } | |
ea0ec5ce | 493 | |
35d8c19a | 494 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
495 | if (r < 0) |
496 | return r; | |
e8d2f6cd | 497 | |
5a724170 | 498 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
499 | if (r < 0) |
500 | return r; | |
2edd4434 | 501 | |
3e3852b3 | 502 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 503 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 504 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
505 | if (r < 0) |
506 | return r; | |
507 | } | |
508 | ||
2edd4434 LP |
509 | return 0; |
510 | } | |
511 | ||
8d567588 | 512 | static int mount_verify(Mount *m) { |
a57f7e2c | 513 | _cleanup_free_ char *e = NULL; |
b294b79f | 514 | MountParameters *p; |
7410616c | 515 | int r; |
a57f7e2c | 516 | |
8d567588 LP |
517 | assert(m); |
518 | ||
1124fe6f | 519 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
520 | return 0; |
521 | ||
1df96fcb | 522 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
523 | return -ENOENT; |
524 | ||
7410616c LP |
525 | r = unit_name_from_path(m->where, ".mount", &e); |
526 | if (r < 0) | |
f2341e0a | 527 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 528 | |
7410616c | 529 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 530 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 531 | return -ENOEXEC; |
8d567588 LP |
532 | } |
533 | ||
33ff02c9 | 534 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 535 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 536 | return -ENOEXEC; |
33ff02c9 LP |
537 | } |
538 | ||
b294b79f MO |
539 | p = get_mount_parameters_fragment(m); |
540 | if (p && !p->what) { | |
f2341e0a | 541 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 542 | return -ENOEXEC; |
4e85aff4 LP |
543 | } |
544 | ||
4819ff03 | 545 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 546 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 547 | return -ENOEXEC; |
4d0e5dbd LP |
548 | } |
549 | ||
8d567588 LP |
550 | return 0; |
551 | } | |
552 | ||
1a4ac875 MS |
553 | static int mount_add_extras(Mount *m) { |
554 | Unit *u = UNIT(m); | |
e537352b LP |
555 | int r; |
556 | ||
e821075a LP |
557 | assert(m); |
558 | ||
1f736476 LP |
559 | /* Note: this call might be called after we already have been loaded once (and even when it has already been |
560 | * activated), in case data from /proc/self/mountinfo has changed. This means all code here needs to be ready | |
561 | * to run with an already set up unit. */ | |
562 | ||
e821075a | 563 | if (u->fragment_path) |
1a4ac875 | 564 | m->from_fragment = true; |
e537352b | 565 | |
1a4ac875 | 566 | if (!m->where) { |
7410616c LP |
567 | r = unit_name_to_path(u->id, &m->where); |
568 | if (r < 0) | |
569 | return r; | |
1a4ac875 | 570 | } |
a16e1123 | 571 | |
858d36c1 | 572 | path_simplify(m->where, false); |
e537352b | 573 | |
e821075a | 574 | if (!u->description) { |
1a4ac875 MS |
575 | r = unit_set_description(u, m->where); |
576 | if (r < 0) | |
173a8d04 | 577 | return r; |
1a4ac875 | 578 | } |
6e2ef85b | 579 | |
eef85c4a | 580 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
581 | if (r < 0) |
582 | return r; | |
6e2ef85b | 583 | |
eef85c4a | 584 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
585 | if (r < 0) |
586 | return r; | |
6e2ef85b | 587 | |
eef85c4a | 588 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
589 | if (r < 0) |
590 | return r; | |
e537352b | 591 | |
598459ce LP |
592 | r = unit_patch_contexts(u); |
593 | if (r < 0) | |
594 | return r; | |
4e67ddd6 | 595 | |
598459ce | 596 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
597 | if (r < 0) |
598 | return r; | |
599 | ||
d79200e2 | 600 | r = unit_set_default_slice(u); |
1a4ac875 MS |
601 | if (r < 0) |
602 | return r; | |
603 | ||
4c9ea260 LP |
604 | r = mount_add_default_dependencies(m); |
605 | if (r < 0) | |
606 | return r; | |
598459ce | 607 | |
1a4ac875 MS |
608 | return 0; |
609 | } | |
610 | ||
11222d0f LP |
611 | static int mount_load_root_mount(Unit *u) { |
612 | assert(u); | |
613 | ||
614 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
615 | return 0; | |
616 | ||
617 | u->perpetual = true; | |
618 | u->default_dependencies = false; | |
619 | ||
620 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
621 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
622 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
623 | ||
624 | if (!u->description) | |
625 | u->description = strdup("Root Mount"); | |
626 | ||
627 | return 1; | |
628 | } | |
629 | ||
1a4ac875 MS |
630 | static int mount_load(Unit *u) { |
631 | Mount *m = MOUNT(u); | |
780ae022 | 632 | int r, q, w; |
1a4ac875 MS |
633 | |
634 | assert(u); | |
635 | assert(u->load_state == UNIT_STUB); | |
636 | ||
11222d0f | 637 | r = mount_load_root_mount(u); |
11222d0f LP |
638 | |
639 | if (m->from_proc_self_mountinfo || u->perpetual) | |
780ae022 | 640 | q = unit_load_fragment_and_dropin_optional(u); |
8eba616f | 641 | else |
780ae022 LP |
642 | q = unit_load_fragment_and_dropin(u); |
643 | ||
644 | /* Add in some extras. Note we do this in all cases (even if we failed to load the unit) when announced by the | |
645 | * kernel, because we need some things to be set up no matter what when the kernel establishes a mount and thus | |
646 | * we need to update the state in our unit to track it. After all, consider that we don't allow changing the | |
647 | * 'slice' field for a unit once it is active. */ | |
648 | if (u->load_state == UNIT_LOADED || m->from_proc_self_mountinfo || u->perpetual) | |
649 | w = mount_add_extras(m); | |
650 | else | |
651 | w = 0; | |
652 | ||
1a4ac875 MS |
653 | if (r < 0) |
654 | return r; | |
780ae022 LP |
655 | if (q < 0) |
656 | return q; | |
657 | if (w < 0) | |
658 | return w; | |
e537352b | 659 | |
8d567588 | 660 | return mount_verify(m); |
e537352b LP |
661 | } |
662 | ||
663 | static void mount_set_state(Mount *m, MountState state) { | |
664 | MountState old_state; | |
665 | assert(m); | |
666 | ||
6fcbec6f LP |
667 | if (m->state != state) |
668 | bus_unit_send_pending_change_signal(UNIT(m), false); | |
669 | ||
e537352b LP |
670 | old_state = m->state; |
671 | m->state = state; | |
672 | ||
c634f3d2 | 673 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 674 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 675 | mount_unwatch_control_pid(m); |
e537352b | 676 | m->control_command = NULL; |
a16e1123 | 677 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
678 | } |
679 | ||
680 | if (state != old_state) | |
f2341e0a | 681 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 682 | |
2ad2e41a LP |
683 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
684 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
685 | } |
686 | ||
be847e82 | 687 | static int mount_coldplug(Unit *u) { |
e537352b | 688 | Mount *m = MOUNT(u); |
a16e1123 LP |
689 | MountState new_state = MOUNT_DEAD; |
690 | int r; | |
e537352b LP |
691 | |
692 | assert(m); | |
693 | assert(m->state == MOUNT_DEAD); | |
694 | ||
a16e1123 LP |
695 | if (m->deserialized_state != m->state) |
696 | new_state = m->deserialized_state; | |
697 | else if (m->from_proc_self_mountinfo) | |
698 | new_state = MOUNT_MOUNTED; | |
e537352b | 699 | |
5bcb0f2b LP |
700 | if (new_state == m->state) |
701 | return 0; | |
e537352b | 702 | |
c386f588 LP |
703 | if (m->control_pid > 0 && |
704 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 705 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b | 706 | |
f75f613d | 707 | r = unit_watch_pid(UNIT(m), m->control_pid, false); |
5bcb0f2b LP |
708 | if (r < 0) |
709 | return r; | |
e537352b | 710 | |
36c16a7c | 711 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
712 | if (r < 0) |
713 | return r; | |
a16e1123 | 714 | } |
e537352b | 715 | |
e8a565cb | 716 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 717 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
718 | (void) unit_setup_exec_runtime(u); |
719 | } | |
29206d46 | 720 | |
5bcb0f2b | 721 | mount_set_state(m, new_state); |
e537352b | 722 | return 0; |
e537352b LP |
723 | } |
724 | ||
725 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 726 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
727 | Mount *m = MOUNT(u); |
728 | MountParameters *p; | |
729 | ||
730 | assert(m); | |
731 | assert(f); | |
732 | ||
cb39ed3f | 733 | p = get_mount_parameters(m); |
e537352b LP |
734 | |
735 | fprintf(f, | |
736 | "%sMount State: %s\n" | |
81a5c6d0 | 737 | "%sResult: %s\n" |
e537352b LP |
738 | "%sWhere: %s\n" |
739 | "%sWhat: %s\n" | |
740 | "%sFile System Type: %s\n" | |
741 | "%sOptions: %s\n" | |
e537352b LP |
742 | "%sFrom /proc/self/mountinfo: %s\n" |
743 | "%sFrom fragment: %s\n" | |
ad2706db | 744 | "%sExtrinsic: %s\n" |
e520950a | 745 | "%sDirectoryMode: %04o\n" |
49915de2 | 746 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 747 | "%sLazyUnmount: %s\n" |
91899792 | 748 | "%sForceUnmount: %s\n" |
ac8956ef | 749 | "%sTimeoutSec: %s\n", |
a16e1123 | 750 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 751 | prefix, mount_result_to_string(m->result), |
e537352b | 752 | prefix, m->where, |
1e4fc9b1 HH |
753 | prefix, p ? strna(p->what) : "n/a", |
754 | prefix, p ? strna(p->fstype) : "n/a", | |
755 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
756 | prefix, yes_no(m->from_proc_self_mountinfo), |
757 | prefix, yes_no(m->from_fragment), | |
ad2706db | 758 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 759 | prefix, m->directory_mode, |
49915de2 | 760 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 761 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
762 | prefix, yes_no(m->force_unmount), |
763 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
764 | |
765 | if (m->control_pid > 0) | |
766 | fprintf(f, | |
ccd06097 ZJS |
767 | "%sControl PID: "PID_FMT"\n", |
768 | prefix, m->control_pid); | |
e537352b LP |
769 | |
770 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 771 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 772 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
773 | } |
774 | ||
a16e1123 | 775 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 776 | |
b9c04eaf | 777 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
5686391b LP |
778 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
779 | .stdin_fd = -1, | |
780 | .stdout_fd = -1, | |
781 | .stderr_fd = -1, | |
782 | .exec_fd = -1, | |
9fa95f85 | 783 | }; |
3c7416b6 LP |
784 | pid_t pid; |
785 | int r; | |
a16e1123 LP |
786 | |
787 | assert(m); | |
788 | assert(c); | |
789 | assert(_pid); | |
790 | ||
3c7416b6 | 791 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
792 | if (r < 0) |
793 | return r; | |
794 | ||
36c16a7c | 795 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 796 | if (r < 0) |
36c16a7c | 797 | return r; |
a16e1123 | 798 | |
1ad6e8b3 LP |
799 | r = unit_set_exec_params(UNIT(m), &exec_params); |
800 | if (r < 0) | |
801 | return r; | |
9fa95f85 | 802 | |
f2341e0a LP |
803 | r = exec_spawn(UNIT(m), |
804 | c, | |
4ad49000 | 805 | &m->exec_context, |
9fa95f85 | 806 | &exec_params, |
613b411c | 807 | m->exec_runtime, |
29206d46 | 808 | &m->dynamic_creds, |
4ad49000 LP |
809 | &pid); |
810 | if (r < 0) | |
36c16a7c | 811 | return r; |
a16e1123 | 812 | |
f75f613d | 813 | r = unit_watch_pid(UNIT(m), pid, true); |
4ad49000 | 814 | if (r < 0) |
36c16a7c | 815 | return r; |
a16e1123 LP |
816 | |
817 | *_pid = pid; | |
818 | ||
819 | return 0; | |
a16e1123 LP |
820 | } |
821 | ||
9d2f5178 | 822 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
823 | assert(m); |
824 | ||
a0fef983 | 825 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 826 | m->result = f; |
e537352b | 827 | |
aac99f30 | 828 | unit_log_result(UNIT(m), m->result == MOUNT_SUCCESS, mount_result_to_string(m->result)); |
29206d46 LP |
829 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
830 | ||
e8a565cb | 831 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 832 | |
3536f49e | 833 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 834 | |
00d9ef85 LP |
835 | unit_unref_uid_gid(UNIT(m), true); |
836 | ||
29206d46 | 837 | dynamic_creds_destroy(&m->dynamic_creds); |
c52c2dc6 ZJS |
838 | |
839 | /* Any dependencies based on /proc/self/mountinfo are now stale */ | |
840 | unit_remove_dependencies(UNIT(m), UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
e537352b LP |
841 | } |
842 | ||
9d2f5178 | 843 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
844 | assert(m); |
845 | ||
a0fef983 | 846 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 847 | m->result = f; |
80876c20 LP |
848 | |
849 | mount_set_state(m, MOUNT_MOUNTED); | |
850 | } | |
851 | ||
22af0e58 LP |
852 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
853 | assert(m); | |
854 | ||
855 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
856 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
857 | * ultimately we just mirror the kernel's internal state on this. */ | |
858 | ||
859 | if (m->from_proc_self_mountinfo) | |
860 | mount_enter_mounted(m, f); | |
861 | else | |
862 | mount_enter_dead(m, f); | |
863 | } | |
864 | ||
865 | static int state_to_kill_operation(MountState state) { | |
866 | switch (state) { | |
867 | ||
868 | case MOUNT_REMOUNTING_SIGTERM: | |
869 | case MOUNT_UNMOUNTING_SIGTERM: | |
870 | return KILL_TERMINATE; | |
871 | ||
872 | case MOUNT_REMOUNTING_SIGKILL: | |
873 | case MOUNT_UNMOUNTING_SIGKILL: | |
874 | return KILL_KILL; | |
875 | ||
876 | default: | |
877 | return _KILL_OPERATION_INVALID; | |
878 | } | |
879 | } | |
880 | ||
9d2f5178 | 881 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
882 | int r; |
883 | ||
884 | assert(m); | |
885 | ||
a0fef983 | 886 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 887 | m->result = f; |
e537352b | 888 | |
cd2086fe LP |
889 | r = unit_kill_context( |
890 | UNIT(m), | |
891 | &m->kill_context, | |
22af0e58 | 892 | state_to_kill_operation(state), |
cd2086fe LP |
893 | -1, |
894 | m->control_pid, | |
895 | false); | |
896 | if (r < 0) | |
897 | goto fail; | |
e537352b | 898 | |
cd2086fe | 899 | if (r > 0) { |
36c16a7c | 900 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 901 | if (r < 0) |
80876c20 | 902 | goto fail; |
e537352b | 903 | |
80876c20 | 904 | mount_set_state(m, state); |
22af0e58 | 905 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 906 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 907 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 908 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 909 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 910 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 911 | else |
22af0e58 | 912 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
913 | |
914 | return; | |
915 | ||
916 | fail: | |
f2341e0a | 917 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 918 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
919 | } |
920 | ||
9d2f5178 | 921 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
922 | int r; |
923 | ||
924 | assert(m); | |
925 | ||
7d54a03a LP |
926 | /* Start counting our attempts */ |
927 | if (!IN_SET(m->state, | |
928 | MOUNT_UNMOUNTING, | |
929 | MOUNT_UNMOUNTING_SIGTERM, | |
930 | MOUNT_UNMOUNTING_SIGKILL)) | |
931 | m->n_retry_umount = 0; | |
932 | ||
a16e1123 LP |
933 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
934 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 935 | |
83897d54 | 936 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
937 | if (r >= 0 && m->lazy_unmount) |
938 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
939 | if (r >= 0 && m->force_unmount) |
940 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 941 | if (r < 0) |
e537352b LP |
942 | goto fail; |
943 | ||
a16e1123 | 944 | mount_unwatch_control_pid(m); |
5e94833f | 945 | |
7d54a03a LP |
946 | r = mount_spawn(m, m->control_command, &m->control_pid); |
947 | if (r < 0) | |
e537352b LP |
948 | goto fail; |
949 | ||
950 | mount_set_state(m, MOUNT_UNMOUNTING); | |
951 | ||
952 | return; | |
953 | ||
954 | fail: | |
f2341e0a | 955 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 956 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
957 | } |
958 | ||
8d567588 | 959 | static void mount_enter_mounting(Mount *m) { |
e537352b | 960 | int r; |
cb39ed3f | 961 | MountParameters *p; |
e537352b LP |
962 | |
963 | assert(m); | |
964 | ||
25cd4964 | 965 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
966 | if (r < 0) |
967 | goto fail; | |
968 | ||
969 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 970 | |
f2341e0a | 971 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
a4634b21 LP |
972 | unit_warn_leftover_processes(UNIT(m)); |
973 | ||
974 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
975 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
976 | ||
cb39ed3f | 977 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 978 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 979 | if (p && mount_is_bind(p)) |
f2341e0a | 980 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 981 | |
b294b79f | 982 | if (p) { |
17a1c597 ZJS |
983 | _cleanup_free_ char *opts = NULL; |
984 | ||
b294b79f | 985 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
986 | if (r < 0) |
987 | goto fail; | |
988 | ||
b294b79f | 989 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
990 | if (r >= 0 && m->sloppy_options) |
991 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
992 | if (r >= 0 && p->fstype) |
993 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 994 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 995 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 996 | } else |
e537352b | 997 | r = -ENOENT; |
e537352b LP |
998 | if (r < 0) |
999 | goto fail; | |
1000 | ||
a16e1123 | 1001 | mount_unwatch_control_pid(m); |
5e94833f | 1002 | |
257f1d8e LP |
1003 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1004 | if (r < 0) | |
e537352b LP |
1005 | goto fail; |
1006 | ||
1007 | mount_set_state(m, MOUNT_MOUNTING); | |
1008 | ||
1009 | return; | |
1010 | ||
1011 | fail: | |
f2341e0a | 1012 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 1013 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
1014 | } |
1015 | ||
850b7410 LP |
1016 | static void mount_set_reload_result(Mount *m, MountResult result) { |
1017 | assert(m); | |
1018 | ||
1019 | /* Only store the first error we encounter */ | |
1020 | if (m->reload_result != MOUNT_SUCCESS) | |
1021 | return; | |
1022 | ||
1023 | m->reload_result = result; | |
1024 | } | |
1025 | ||
9d2f5178 | 1026 | static void mount_enter_remounting(Mount *m) { |
e537352b | 1027 | int r; |
b294b79f | 1028 | MountParameters *p; |
e537352b LP |
1029 | |
1030 | assert(m); | |
1031 | ||
850b7410 LP |
1032 | /* Reset reload result when we are about to start a new remount operation */ |
1033 | m->reload_result = MOUNT_SUCCESS; | |
1034 | ||
a16e1123 LP |
1035 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1036 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1037 | |
b294b79f MO |
1038 | p = get_mount_parameters_fragment(m); |
1039 | if (p) { | |
e537352b LP |
1040 | const char *o; |
1041 | ||
b294b79f MO |
1042 | if (p->options) |
1043 | o = strjoina("remount,", p->options); | |
718db961 | 1044 | else |
e537352b LP |
1045 | o = "remount"; |
1046 | ||
f00929ad | 1047 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1048 | p->what, m->where, |
e86b3761 | 1049 | "-o", o, NULL); |
e86b3761 ZJS |
1050 | if (r >= 0 && m->sloppy_options) |
1051 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1052 | if (r >= 0 && p->fstype) |
1053 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1054 | } else |
e537352b | 1055 | r = -ENOENT; |
60b912f6 | 1056 | if (r < 0) |
e537352b | 1057 | goto fail; |
e537352b | 1058 | |
a16e1123 | 1059 | mount_unwatch_control_pid(m); |
5e94833f | 1060 | |
718db961 LP |
1061 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1062 | if (r < 0) | |
e537352b LP |
1063 | goto fail; |
1064 | ||
1065 | mount_set_state(m, MOUNT_REMOUNTING); | |
1066 | ||
1067 | return; | |
1068 | ||
1069 | fail: | |
f2341e0a | 1070 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1071 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1072 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1073 | } |
1074 | ||
7eba1463 LP |
1075 | static void mount_cycle_clear(Mount *m) { |
1076 | assert(m); | |
1077 | ||
1078 | /* Clear all state we shall forget for this new cycle */ | |
1079 | ||
1080 | m->result = MOUNT_SUCCESS; | |
1081 | m->reload_result = MOUNT_SUCCESS; | |
1082 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); | |
1083 | UNIT(m)->reset_accounting = true; | |
1084 | } | |
1085 | ||
e537352b LP |
1086 | static int mount_start(Unit *u) { |
1087 | Mount *m = MOUNT(u); | |
07299350 | 1088 | int r; |
e537352b LP |
1089 | |
1090 | assert(m); | |
1091 | ||
1092 | /* We cannot fulfill this request right now, try again later | |
1093 | * please! */ | |
f2aed307 LP |
1094 | if (IN_SET(m->state, |
1095 | MOUNT_UNMOUNTING, | |
1096 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1097 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1098 | return -EAGAIN; |
1099 | ||
1100 | /* Already on it! */ | |
60b912f6 | 1101 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1102 | return 0; |
1103 | ||
f2aed307 | 1104 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1105 | |
97a3f4ee | 1106 | r = unit_test_start_limit(u); |
07299350 LP |
1107 | if (r < 0) { |
1108 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1109 | return r; | |
1110 | } | |
1111 | ||
4b58153d LP |
1112 | r = unit_acquire_invocation_id(u); |
1113 | if (r < 0) | |
1114 | return r; | |
1115 | ||
7eba1463 | 1116 | mount_cycle_clear(m); |
8d567588 | 1117 | mount_enter_mounting(m); |
7eba1463 | 1118 | |
82a2b6bb | 1119 | return 1; |
e537352b LP |
1120 | } |
1121 | ||
1122 | static int mount_stop(Unit *u) { | |
1123 | Mount *m = MOUNT(u); | |
1124 | ||
1125 | assert(m); | |
1126 | ||
22af0e58 LP |
1127 | switch (m->state) { |
1128 | ||
1129 | case MOUNT_UNMOUNTING: | |
1130 | case MOUNT_UNMOUNTING_SIGKILL: | |
1131 | case MOUNT_UNMOUNTING_SIGTERM: | |
1132 | /* Already on it */ | |
e537352b LP |
1133 | return 0; |
1134 | ||
22af0e58 LP |
1135 | case MOUNT_MOUNTING: |
1136 | case MOUNT_MOUNTING_DONE: | |
1137 | case MOUNT_REMOUNTING: | |
1138 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1139 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1140 | return 0; | |
e537352b | 1141 | |
22af0e58 LP |
1142 | case MOUNT_REMOUNTING_SIGTERM: |
1143 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1144 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1145 | return 0; | |
1146 | ||
1147 | case MOUNT_REMOUNTING_SIGKILL: | |
1148 | /* as above */ | |
1149 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1150 | return 0; | |
1151 | ||
1152 | case MOUNT_MOUNTED: | |
1153 | mount_enter_unmounting(m); | |
1154 | return 1; | |
1155 | ||
1156 | default: | |
1157 | assert_not_reached("Unexpected state."); | |
1158 | } | |
e537352b LP |
1159 | } |
1160 | ||
1161 | static int mount_reload(Unit *u) { | |
1162 | Mount *m = MOUNT(u); | |
1163 | ||
1164 | assert(m); | |
e537352b LP |
1165 | assert(m->state == MOUNT_MOUNTED); |
1166 | ||
9d2f5178 | 1167 | mount_enter_remounting(m); |
22af0e58 | 1168 | |
2d018ae2 | 1169 | return 1; |
e537352b LP |
1170 | } |
1171 | ||
a16e1123 LP |
1172 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1173 | Mount *m = MOUNT(u); | |
1174 | ||
1175 | assert(m); | |
1176 | assert(f); | |
1177 | assert(fds); | |
1178 | ||
d68c645b LP |
1179 | (void) serialize_item(f, "state", mount_state_to_string(m->state)); |
1180 | (void) serialize_item(f, "result", mount_result_to_string(m->result)); | |
1181 | (void) serialize_item(f, "reload-result", mount_result_to_string(m->reload_result)); | |
2c09fb81 | 1182 | (void) serialize_item_format(f, "n-retry-umount", "%u", m->n_retry_umount); |
a16e1123 LP |
1183 | |
1184 | if (m->control_pid > 0) | |
d68c645b | 1185 | (void) serialize_item_format(f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1186 | |
1187 | if (m->control_command_id >= 0) | |
d68c645b | 1188 | (void) serialize_item(f, "control-command", mount_exec_command_to_string(m->control_command_id)); |
a16e1123 LP |
1189 | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1194 | Mount *m = MOUNT(u); | |
2c09fb81 | 1195 | int r; |
a16e1123 LP |
1196 | |
1197 | assert(u); | |
1198 | assert(key); | |
1199 | assert(value); | |
1200 | assert(fds); | |
1201 | ||
1202 | if (streq(key, "state")) { | |
1203 | MountState state; | |
1204 | ||
1205 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1206 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1207 | else |
1208 | m->deserialized_state = state; | |
2c09fb81 | 1209 | |
9d2f5178 LP |
1210 | } else if (streq(key, "result")) { |
1211 | MountResult f; | |
a16e1123 | 1212 | |
9d2f5178 LP |
1213 | f = mount_result_from_string(value); |
1214 | if (f < 0) | |
f2341e0a | 1215 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1216 | else if (f != MOUNT_SUCCESS) |
1217 | m->result = f; | |
1218 | ||
1219 | } else if (streq(key, "reload-result")) { | |
1220 | MountResult f; | |
1221 | ||
1222 | f = mount_result_from_string(value); | |
1223 | if (f < 0) | |
f2341e0a | 1224 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1225 | else if (f != MOUNT_SUCCESS) |
1226 | m->reload_result = f; | |
a16e1123 | 1227 | |
2c09fb81 LP |
1228 | } else if (streq(key, "n-retry-umount")) { |
1229 | ||
1230 | r = safe_atou(value, &m->n_retry_umount); | |
1231 | if (r < 0) | |
1232 | log_unit_debug(u, "Failed to parse n-retry-umount value: %s", value); | |
1233 | ||
a16e1123 | 1234 | } else if (streq(key, "control-pid")) { |
a16e1123 | 1235 | |
3f459cd9 | 1236 | if (parse_pid(value, &m->control_pid) < 0) |
f2341e0a | 1237 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
3f459cd9 | 1238 | |
a16e1123 LP |
1239 | } else if (streq(key, "control-command")) { |
1240 | MountExecCommand id; | |
1241 | ||
f2341e0a LP |
1242 | id = mount_exec_command_from_string(value); |
1243 | if (id < 0) | |
1244 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1245 | else { |
1246 | m->control_command_id = id; | |
1247 | m->control_command = m->exec_command + id; | |
1248 | } | |
a16e1123 | 1249 | } else |
f2341e0a | 1250 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1251 | |
1252 | return 0; | |
1253 | } | |
1254 | ||
44a6b1b6 | 1255 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1256 | assert(u); |
1257 | ||
1258 | return state_translation_table[MOUNT(u)->state]; | |
1259 | } | |
1260 | ||
44a6b1b6 | 1261 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1262 | assert(u); |
1263 | ||
a16e1123 | 1264 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1265 | } |
1266 | ||
f2f725e5 | 1267 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1268 | Mount *m = MOUNT(u); |
1269 | ||
1270 | assert(m); | |
1271 | ||
f2f725e5 ZJS |
1272 | if (m->from_proc_self_mountinfo) |
1273 | return false; | |
1274 | ||
1275 | return true; | |
701cc384 LP |
1276 | } |
1277 | ||
e537352b LP |
1278 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1279 | Mount *m = MOUNT(u); | |
9d2f5178 | 1280 | MountResult f; |
e537352b LP |
1281 | |
1282 | assert(m); | |
1283 | assert(pid >= 0); | |
1284 | ||
8c47c732 LP |
1285 | if (pid != m->control_pid) |
1286 | return; | |
e537352b | 1287 | |
e537352b LP |
1288 | m->control_pid = 0; |
1289 | ||
1f0958f6 | 1290 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1291 | f = MOUNT_SUCCESS; |
1292 | else if (code == CLD_EXITED) | |
1293 | f = MOUNT_FAILURE_EXIT_CODE; | |
1294 | else if (code == CLD_KILLED) | |
1295 | f = MOUNT_FAILURE_SIGNAL; | |
1296 | else if (code == CLD_DUMPED) | |
1297 | f = MOUNT_FAILURE_CORE_DUMP; | |
1298 | else | |
1299 | assert_not_reached("Unknown code"); | |
1300 | ||
850b7410 LP |
1301 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1302 | mount_set_reload_result(m, f); | |
1303 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1304 | m->result = f; |
8c47c732 | 1305 | |
a16e1123 | 1306 | if (m->control_command) { |
6ea832a2 | 1307 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1308 | |
a16e1123 LP |
1309 | m->control_command = NULL; |
1310 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1311 | } | |
1312 | ||
91bbd9b7 LP |
1313 | unit_log_process_exit( |
1314 | u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1315 | "Mount process", | |
1316 | mount_exec_command_to_string(m->control_command_id), | |
1317 | code, status); | |
e537352b | 1318 | |
006aabbd AJ |
1319 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1320 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1321 | |
1322 | switch (m->state) { | |
1323 | ||
1324 | case MOUNT_MOUNTING: | |
006aabbd | 1325 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1326 | |
006aabbd AJ |
1327 | if (f == MOUNT_SUCCESS) { |
1328 | /* Either /bin/mount has an unexpected definition of success, | |
1329 | * or someone raced us and we lost. */ | |
1330 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1331 | f = MOUNT_FAILURE_PROTOCOL; | |
1332 | } | |
1333 | mount_enter_dead(m, f); | |
1334 | break; | |
1335 | ||
1336 | case MOUNT_MOUNTING_DONE: | |
1337 | mount_enter_mounted(m, f); | |
e537352b LP |
1338 | break; |
1339 | ||
e2f3b44c | 1340 | case MOUNT_REMOUNTING: |
e2f3b44c | 1341 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1342 | case MOUNT_REMOUNTING_SIGKILL: |
1343 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1344 | break; |
1345 | ||
e537352b | 1346 | case MOUNT_UNMOUNTING: |
e537352b | 1347 | |
3cc96856 | 1348 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1349 | |
1350 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1351 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1352 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1353 | |
1354 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1355 | log_unit_debug(u, "Mount still present, trying again."); | |
1356 | m->n_retry_umount++; | |
1357 | mount_enter_unmounting(m); | |
1358 | } else { | |
006aabbd | 1359 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1360 | mount_enter_mounted(m, f); |
1361 | } | |
1362 | } else | |
3cc96856 | 1363 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1364 | |
e537352b | 1365 | break; |
57018361 AJ |
1366 | |
1367 | case MOUNT_UNMOUNTING_SIGKILL: | |
1368 | case MOUNT_UNMOUNTING_SIGTERM: | |
1369 | mount_enter_dead_or_mounted(m, f); | |
1370 | break; | |
e537352b LP |
1371 | |
1372 | default: | |
1373 | assert_not_reached("Uh, control process died at wrong time."); | |
1374 | } | |
c4e2ceae LP |
1375 | |
1376 | /* Notify clients about changed exit status */ | |
1377 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1378 | } |
1379 | ||
718db961 LP |
1380 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1381 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1382 | |
1383 | assert(m); | |
718db961 | 1384 | assert(m->timer_event_source == source); |
e537352b LP |
1385 | |
1386 | switch (m->state) { | |
1387 | ||
1388 | case MOUNT_MOUNTING: | |
1389 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1390 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1391 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1392 | break; |
1393 | ||
1394 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1395 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1396 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1397 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1398 | break; |
1399 | ||
22af0e58 LP |
1400 | case MOUNT_REMOUNTING_SIGTERM: |
1401 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1402 | |
4819ff03 | 1403 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1404 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1405 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1406 | } else { |
22af0e58 LP |
1407 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1408 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1409 | } |
e537352b LP |
1410 | break; |
1411 | ||
22af0e58 LP |
1412 | case MOUNT_REMOUNTING_SIGKILL: |
1413 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1414 | |
22af0e58 LP |
1415 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1416 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1417 | break; | |
1418 | ||
1419 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1420 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1421 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1422 | break; |
1423 | ||
1424 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1425 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1426 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1427 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1428 | } else { |
22af0e58 LP |
1429 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1430 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1431 | } |
e537352b LP |
1432 | break; |
1433 | ||
e537352b | 1434 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1435 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1436 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1437 | break; |
1438 | ||
1439 | default: | |
1440 | assert_not_reached("Timeout at wrong time."); | |
1441 | } | |
718db961 LP |
1442 | |
1443 | return 0; | |
e537352b LP |
1444 | } |
1445 | ||
03b8cfed | 1446 | static int mount_setup_new_unit( |
839ee058 LP |
1447 | Manager *m, |
1448 | const char *name, | |
03b8cfed FB |
1449 | const char *what, |
1450 | const char *where, | |
1451 | const char *options, | |
1452 | const char *fstype, | |
ec88d1ea | 1453 | MountProcFlags *ret_flags, |
839ee058 | 1454 | Unit **ret) { |
03b8cfed | 1455 | |
839ee058 | 1456 | _cleanup_(unit_freep) Unit *u = NULL; |
bbee24bc | 1457 | int r; |
03b8cfed | 1458 | |
839ee058 LP |
1459 | assert(m); |
1460 | assert(name); | |
ec88d1ea | 1461 | assert(ret_flags); |
839ee058 LP |
1462 | assert(ret); |
1463 | ||
1464 | r = unit_new_for_name(m, sizeof(Mount), name, &u); | |
1465 | if (r < 0) | |
1466 | return r; | |
03b8cfed | 1467 | |
e10fe042 LP |
1468 | r = free_and_strdup(&u->source_path, "/proc/self/mountinfo"); |
1469 | if (r < 0) | |
1470 | return r; | |
03b8cfed | 1471 | |
e10fe042 LP |
1472 | r = free_and_strdup(&MOUNT(u)->where, where); |
1473 | if (r < 0) | |
1474 | return r; | |
03b8cfed | 1475 | |
bbee24bc LP |
1476 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1477 | if (r < 0) | |
1478 | return r; | |
03b8cfed | 1479 | |
6d7e89b0 LP |
1480 | /* This unit was generated because /proc/self/mountinfo reported it. Remember this, so that by the time we load |
1481 | * the unit file for it (and thus add in extra deps right after) we know what source to attributes the deps | |
1482 | * to.*/ | |
1483 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1484 | ||
1485 | /* We have only allocated the stub now, let's enqueue this unit for loading now, so that everything else is | |
1486 | * loaded in now. */ | |
cfcd4318 | 1487 | unit_add_to_load_queue(u); |
26e35b16 | 1488 | |
ec88d1ea | 1489 | *ret_flags = MOUNT_PROC_IS_MOUNTED | MOUNT_PROC_JUST_MOUNTED | MOUNT_PROC_JUST_CHANGED; |
839ee058 | 1490 | *ret = TAKE_PTR(u); |
03b8cfed FB |
1491 | return 0; |
1492 | } | |
1493 | ||
1494 | static int mount_setup_existing_unit( | |
1495 | Unit *u, | |
1496 | const char *what, | |
1497 | const char *where, | |
1498 | const char *options, | |
1499 | const char *fstype, | |
ec88d1ea | 1500 | MountProcFlags *ret_flags) { |
03b8cfed | 1501 | |
ec88d1ea | 1502 | MountProcFlags flags = MOUNT_PROC_IS_MOUNTED; |
bbee24bc | 1503 | int r; |
03b8cfed FB |
1504 | |
1505 | assert(u); | |
1506 | assert(flags); | |
1507 | ||
1508 | if (!MOUNT(u)->where) { | |
1509 | MOUNT(u)->where = strdup(where); | |
1510 | if (!MOUNT(u)->where) | |
1511 | return -ENOMEM; | |
1512 | } | |
1513 | ||
bbee24bc LP |
1514 | r = update_parameters_proc_self_mount_info(MOUNT(u), what, options, fstype); |
1515 | if (r < 0) | |
1516 | return r; | |
ec88d1ea LP |
1517 | if (r > 0) |
1518 | flags |= MOUNT_PROC_JUST_CHANGED; | |
03b8cfed | 1519 | |
d253a45e | 1520 | if (!MOUNT(u)->from_proc_self_mountinfo || FLAGS_SET(MOUNT(u)->proc_flags, MOUNT_PROC_JUST_MOUNTED)) |
ec88d1ea | 1521 | flags |= MOUNT_PROC_JUST_MOUNTED; |
d253a45e YW |
1522 | |
1523 | MOUNT(u)->from_proc_self_mountinfo = true; | |
03b8cfed | 1524 | |
f8064c4f LP |
1525 | if (IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_BAD_SETTING, UNIT_ERROR)) { |
1526 | /* The unit was previously not found or otherwise not loaded. Now that the unit shows up in | |
1527 | * /proc/self/mountinfo we should reconsider it this, hence set it to UNIT_LOADED. */ | |
03b8cfed FB |
1528 | u->load_state = UNIT_LOADED; |
1529 | u->load_error = 0; | |
1530 | ||
ec88d1ea | 1531 | flags |= MOUNT_PROC_JUST_CHANGED; |
03b8cfed FB |
1532 | } |
1533 | ||
ec88d1ea | 1534 | if (FLAGS_SET(flags, MOUNT_PROC_JUST_CHANGED)) { |
a3742204 LP |
1535 | /* If things changed, then make sure that all deps are regenerated. Let's |
1536 | * first remove all automatic deps, and then add in the new ones. */ | |
1537 | ||
1538 | unit_remove_dependencies(u, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); | |
1539 | ||
1540 | r = mount_add_extras(MOUNT(u)); | |
1541 | if (r < 0) | |
1542 | return r; | |
1543 | } | |
03b8cfed | 1544 | |
ec88d1ea | 1545 | *ret_flags = flags; |
03b8cfed FB |
1546 | return 0; |
1547 | } | |
1548 | ||
628c89cc | 1549 | static int mount_setup_unit( |
e537352b LP |
1550 | Manager *m, |
1551 | const char *what, | |
1552 | const char *where, | |
1553 | const char *options, | |
1554 | const char *fstype, | |
e537352b | 1555 | bool set_flags) { |
057d9ab8 | 1556 | |
03b8cfed | 1557 | _cleanup_free_ char *e = NULL; |
ec88d1ea | 1558 | MountProcFlags flags; |
057d9ab8 LP |
1559 | Unit *u; |
1560 | int r; | |
b08d03ff | 1561 | |
f50e0a01 | 1562 | assert(m); |
b08d03ff LP |
1563 | assert(what); |
1564 | assert(where); | |
e537352b LP |
1565 | assert(options); |
1566 | assert(fstype); | |
1567 | ||
e537352b LP |
1568 | /* Ignore API mount points. They should never be referenced in |
1569 | * dependencies ever. */ | |
33ff02c9 | 1570 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1571 | return 0; |
b08d03ff | 1572 | |
8d567588 LP |
1573 | if (streq(fstype, "autofs")) |
1574 | return 0; | |
1575 | ||
4e85aff4 LP |
1576 | /* probably some kind of swap, ignore */ |
1577 | if (!is_path(where)) | |
b08d03ff LP |
1578 | return 0; |
1579 | ||
7410616c LP |
1580 | r = unit_name_from_path(where, ".mount", &e); |
1581 | if (r < 0) | |
60b8c203 | 1582 | return log_error_errno(r, "Failed to generate unit name from path '%s': %m", where); |
b08d03ff | 1583 | |
7d17cfbc | 1584 | u = manager_get_unit(m, e); |
839ee058 | 1585 | if (u) |
03b8cfed | 1586 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); |
839ee058 LP |
1587 | else |
1588 | /* First time we see this mount point meaning that it's not been initiated by a mount unit but rather | |
1589 | * by the sysadmin having called mount(8) directly. */ | |
1590 | r = mount_setup_new_unit(m, e, what, where, options, fstype, &flags, &u); | |
03b8cfed | 1591 | if (r < 0) |
60b8c203 | 1592 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
ff5f34d0 | 1593 | |
ec88d1ea LP |
1594 | /* If the mount changed properties or state, let's notify our clients */ |
1595 | if (flags & (MOUNT_PROC_JUST_CHANGED|MOUNT_PROC_JUST_MOUNTED)) | |
ff5f34d0 | 1596 | unit_add_to_dbus_queue(u); |
c1e1601e | 1597 | |
ec88d1ea LP |
1598 | if (set_flags) |
1599 | MOUNT(u)->proc_flags = flags; | |
1600 | ||
b08d03ff | 1601 | return 0; |
b08d03ff LP |
1602 | } |
1603 | ||
ef734fd6 | 1604 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1605 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1606 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
ba0d56f5 | 1607 | int r; |
b08d03ff LP |
1608 | |
1609 | assert(m); | |
1610 | ||
628c89cc | 1611 | t = mnt_new_table(); |
628c89cc | 1612 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1613 | if (!t || !i) |
628c89cc LP |
1614 | return log_oom(); |
1615 | ||
1616 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1617 | if (r < 0) |
628c89cc | 1618 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1619 | |
5cca8def | 1620 | for (;;) { |
95b862b0 | 1621 | struct libmnt_fs *fs; |
8d3ae2bd | 1622 | const char *device, *path, *options, *fstype; |
527b7a42 | 1623 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1624 | int k; |
b08d03ff | 1625 | |
628c89cc | 1626 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1627 | if (k == 1) |
1628 | break; | |
628c89cc LP |
1629 | if (k < 0) |
1630 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1631 | |
8d3ae2bd CL |
1632 | device = mnt_fs_get_source(fs); |
1633 | path = mnt_fs_get_target(fs); | |
1634 | options = mnt_fs_get_options(fs); | |
1635 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1636 | |
c0a7f8d3 DM |
1637 | if (!device || !path) |
1638 | continue; | |
1639 | ||
527b7a42 | 1640 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1641 | return log_oom(); |
1642 | ||
527b7a42 | 1643 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1644 | return log_oom(); |
b08d03ff | 1645 | |
485ae697 | 1646 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc | 1647 | |
ba0d56f5 | 1648 | (void) mount_setup_unit(m, d, p, options, fstype, set_flags); |
b08d03ff LP |
1649 | } |
1650 | ||
ba0d56f5 | 1651 | return 0; |
e537352b LP |
1652 | } |
1653 | ||
1654 | static void mount_shutdown(Manager *m) { | |
1655 | assert(m); | |
1656 | ||
718db961 LP |
1657 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1658 | ||
d379d442 KZ |
1659 | mnt_unref_monitor(m->mount_monitor); |
1660 | m->mount_monitor = NULL; | |
b08d03ff LP |
1661 | } |
1662 | ||
7a7821c8 | 1663 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1664 | Mount *m = MOUNT(u); |
7a7821c8 | 1665 | usec_t t; |
68db7a3b ZJS |
1666 | int r; |
1667 | ||
1668 | if (!m->timer_event_source) | |
1669 | return 0; | |
1670 | ||
7a7821c8 | 1671 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1672 | if (r < 0) |
1673 | return r; | |
7a7821c8 LP |
1674 | if (t == USEC_INFINITY) |
1675 | return 0; | |
68db7a3b | 1676 | |
7a7821c8 | 1677 | *timeout = t; |
68db7a3b ZJS |
1678 | return 1; |
1679 | } | |
1680 | ||
04eb582a | 1681 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1682 | Unit *u; |
1683 | int r; | |
1684 | ||
1685 | assert(m); | |
1686 | ||
1687 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1688 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1689 | ||
1690 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1691 | if (!u) { | |
a581e45a | 1692 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1693 | if (r < 0) { |
1694 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1695 | return; | |
1696 | } | |
11222d0f LP |
1697 | } |
1698 | ||
1699 | u->perpetual = true; | |
1700 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1701 | ||
1702 | unit_add_to_load_queue(u); | |
1703 | unit_add_to_dbus_queue(u); | |
1704 | } | |
1705 | ||
1706 | static bool mount_is_mounted(Mount *m) { | |
1707 | assert(m); | |
1708 | ||
ec88d1ea | 1709 | return UNIT(m)->perpetual || FLAGS_SET(m->proc_flags, MOUNT_PROC_IS_MOUNTED); |
11222d0f LP |
1710 | } |
1711 | ||
ba64af90 | 1712 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1713 | int r; |
d379d442 | 1714 | |
b08d03ff LP |
1715 | assert(m); |
1716 | ||
8d3ae2bd CL |
1717 | mnt_init_debug(0); |
1718 | ||
d379d442 KZ |
1719 | if (!m->mount_monitor) { |
1720 | int fd; | |
ef734fd6 | 1721 | |
d379d442 KZ |
1722 | m->mount_monitor = mnt_new_monitor(); |
1723 | if (!m->mount_monitor) { | |
ba64af90 | 1724 | log_oom(); |
718db961 | 1725 | goto fail; |
d379d442 | 1726 | } |
29083707 | 1727 | |
d379d442 | 1728 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1729 | if (r < 0) { |
1730 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1731 | goto fail; |
ba64af90 LP |
1732 | } |
1733 | ||
d379d442 | 1734 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1735 | if (r < 0) { |
1736 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1737 | goto fail; |
ba64af90 | 1738 | } |
90598531 | 1739 | |
d379d442 KZ |
1740 | /* mnt_unref_monitor() will close the fd */ |
1741 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1742 | if (r < 0) { |
1743 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1744 | goto fail; |
ba64af90 | 1745 | } |
befb6d54 | 1746 | |
d379d442 | 1747 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1748 | if (r < 0) { |
1749 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1750 | goto fail; |
ba64af90 | 1751 | } |
befb6d54 | 1752 | |
83231637 | 1753 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1754 | if (r < 0) { |
1755 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1756 | goto fail; |
ba64af90 | 1757 | } |
7dfbe2e3 | 1758 | |
d379d442 | 1759 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1760 | } |
1761 | ||
e62d8c39 ZJS |
1762 | r = mount_load_proc_self_mountinfo(m, false); |
1763 | if (r < 0) | |
b08d03ff LP |
1764 | goto fail; |
1765 | ||
ba64af90 | 1766 | return; |
b08d03ff LP |
1767 | |
1768 | fail: | |
1769 | mount_shutdown(m); | |
5cb5a6ff LP |
1770 | } |
1771 | ||
718db961 | 1772 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
ec8126d7 | 1773 | _cleanup_set_free_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1774 | Manager *m = userdata; |
ec8126d7 ZJS |
1775 | const char *what; |
1776 | Iterator i; | |
1777 | Unit *u; | |
ef734fd6 LP |
1778 | int r; |
1779 | ||
1780 | assert(m); | |
d379d442 | 1781 | assert(revents & EPOLLIN); |
ef734fd6 | 1782 | |
d379d442 | 1783 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1784 | bool rescan = false; |
befb6d54 | 1785 | |
d379d442 KZ |
1786 | /* Drain all events and verify that the event is valid. |
1787 | * | |
1788 | * Note that libmount also monitors /run/mount mkdir if the | |
1789 | * directory does not exist yet. The mkdir may generate event | |
1790 | * which is irrelevant for us. | |
1791 | * | |
1792 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1793 | do { | |
1794 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1795 | if (r == 0) | |
1796 | rescan = true; | |
1797 | else if (r < 0) | |
5e1ee764 | 1798 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1799 | } while (r == 0); |
1800 | ||
1801 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1802 | if (!rescan) |
1803 | return 0; | |
1804 | } | |
ef734fd6 | 1805 | |
4f0eedb7 ZJS |
1806 | r = mount_load_proc_self_mountinfo(m, true); |
1807 | if (r < 0) { | |
e537352b | 1808 | /* Reset flags, just in case, for later calls */ |
ec88d1ea LP |
1809 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) |
1810 | MOUNT(u)->proc_flags = 0; | |
e537352b | 1811 | |
ec8126d7 | 1812 | return 0; |
ef734fd6 LP |
1813 | } |
1814 | ||
1815 | manager_dispatch_load_queue(m); | |
1816 | ||
595ed347 MS |
1817 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1818 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1819 | |
11222d0f | 1820 | if (!mount_is_mounted(mount)) { |
e537352b | 1821 | |
394763f6 LP |
1822 | /* A mount point is not around right now. It |
1823 | * might be gone, or might never have | |
1824 | * existed. */ | |
1825 | ||
1826 | if (mount->from_proc_self_mountinfo && | |
1827 | mount->parameters_proc_self_mountinfo.what) { | |
1828 | ||
1829 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1830 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
b6418dc9 | 1831 | set_put_strdup(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 LP |
1832 | log_oom(); /* we don't care too much about OOM here... */ |
1833 | } | |
fcd8b266 | 1834 | |
ef734fd6 | 1835 | mount->from_proc_self_mountinfo = false; |
c52c2dc6 | 1836 | assert_se(update_parameters_proc_self_mount_info(mount, NULL, NULL, NULL) >= 0); |
e537352b LP |
1837 | |
1838 | switch (mount->state) { | |
1839 | ||
1840 | case MOUNT_MOUNTED: | |
7eba1463 | 1841 | /* This has just been unmounted by somebody else, follow the state change. */ |
9d2f5178 | 1842 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1843 | break; |
1844 | ||
1845 | default: | |
e537352b | 1846 | break; |
e537352b LP |
1847 | } |
1848 | ||
ec88d1ea | 1849 | } else if (mount->proc_flags & (MOUNT_PROC_JUST_MOUNTED|MOUNT_PROC_JUST_CHANGED)) { |
e537352b | 1850 | |
fcd8b266 | 1851 | /* A mount point was added or changed */ |
e537352b LP |
1852 | |
1853 | switch (mount->state) { | |
1854 | ||
1855 | case MOUNT_DEAD: | |
fdf20a31 | 1856 | case MOUNT_FAILED: |
4b58153d LP |
1857 | |
1858 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1859 | * generate a new invocation ID for this implicitly and automatically. */ | |
7eba1463 LP |
1860 | (void) unit_acquire_invocation_id(u); |
1861 | mount_cycle_clear(mount); | |
9d2f5178 | 1862 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1863 | break; |
1864 | ||
1865 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1866 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1867 | break; |
1868 | ||
1869 | default: | |
1870 | /* Nothing really changed, but let's | |
1871 | * issue an notification call | |
1872 | * nonetheless, in case somebody is | |
1873 | * waiting for this. (e.g. file system | |
1874 | * ro/rw remounts.) */ | |
1875 | mount_set_state(mount, mount->state); | |
1876 | break; | |
1877 | } | |
394763f6 | 1878 | } |
fcd8b266 | 1879 | |
11222d0f | 1880 | if (mount_is_mounted(mount) && |
394763f6 LP |
1881 | mount->from_proc_self_mountinfo && |
1882 | mount->parameters_proc_self_mountinfo.what) { | |
b6418dc9 | 1883 | /* Track devices currently used */ |
fcd8b266 | 1884 | |
548f6937 | 1885 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
b6418dc9 | 1886 | set_put_strdup(around, mount->parameters_proc_self_mountinfo.what) < 0) |
394763f6 | 1887 | log_oom(); |
e537352b LP |
1888 | } |
1889 | ||
1890 | /* Reset the flags for later calls */ | |
ec88d1ea | 1891 | mount->proc_flags = 0; |
e537352b | 1892 | } |
718db961 | 1893 | |
fcd8b266 LP |
1894 | SET_FOREACH(what, gone, i) { |
1895 | if (set_contains(around, what)) | |
1896 | continue; | |
1897 | ||
1898 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1899 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 | 1900 | } |
ec8126d7 ZJS |
1901 | |
1902 | return 0; | |
e537352b LP |
1903 | } |
1904 | ||
fdf20a31 | 1905 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1906 | Mount *m = MOUNT(u); |
1907 | ||
1908 | assert(m); | |
1909 | ||
fdf20a31 | 1910 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1911 | mount_set_state(m, MOUNT_DEAD); |
1912 | ||
9d2f5178 LP |
1913 | m->result = MOUNT_SUCCESS; |
1914 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1915 | } |
1916 | ||
718db961 | 1917 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1918 | Mount *m = MOUNT(u); |
1919 | ||
1920 | assert(m); | |
1921 | ||
814cc562 | 1922 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1923 | } |
1924 | ||
291d565a LP |
1925 | static int mount_control_pid(Unit *u) { |
1926 | Mount *m = MOUNT(u); | |
1927 | ||
1928 | assert(m); | |
1929 | ||
1930 | return m->control_pid; | |
1931 | } | |
1932 | ||
a16e1123 LP |
1933 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1934 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1935 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1936 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1937 | }; | |
1938 | ||
1939 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1940 | ||
9d2f5178 LP |
1941 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1942 | [MOUNT_SUCCESS] = "success", | |
1943 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1944 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1945 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1946 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1947 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1948 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1949 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1950 | }; |
1951 | ||
1952 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1953 | ||
87f0e418 | 1954 | const UnitVTable mount_vtable = { |
7d17cfbc | 1955 | .object_size = sizeof(Mount), |
718db961 LP |
1956 | .exec_context_offset = offsetof(Mount, exec_context), |
1957 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1958 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1959 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1960 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1961 | |
f975e971 LP |
1962 | .sections = |
1963 | "Unit\0" | |
1964 | "Mount\0" | |
1965 | "Install\0", | |
4ad49000 | 1966 | .private_section = "Mount", |
71645aca | 1967 | |
e537352b LP |
1968 | .init = mount_init, |
1969 | .load = mount_load, | |
034c6ed7 | 1970 | .done = mount_done, |
e537352b | 1971 | |
f50e0a01 LP |
1972 | .coldplug = mount_coldplug, |
1973 | ||
034c6ed7 | 1974 | .dump = mount_dump, |
5cb5a6ff | 1975 | |
e537352b LP |
1976 | .start = mount_start, |
1977 | .stop = mount_stop, | |
1978 | .reload = mount_reload, | |
1979 | ||
8a0867d6 LP |
1980 | .kill = mount_kill, |
1981 | ||
a16e1123 LP |
1982 | .serialize = mount_serialize, |
1983 | .deserialize_item = mount_deserialize_item, | |
1984 | ||
f50e0a01 | 1985 | .active_state = mount_active_state, |
10a94420 | 1986 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1987 | |
f2f725e5 | 1988 | .may_gc = mount_may_gc, |
701cc384 | 1989 | |
e537352b | 1990 | .sigchld_event = mount_sigchld_event, |
e537352b | 1991 | |
fdf20a31 | 1992 | .reset_failed = mount_reset_failed, |
291d565a LP |
1993 | |
1994 | .control_pid = mount_control_pid, | |
5632e374 | 1995 | |
718db961 | 1996 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1997 | .bus_set_property = bus_mount_set_property, |
1998 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1999 | |
68db7a3b ZJS |
2000 | .get_timeout = mount_get_timeout, |
2001 | ||
0e252f6b TG |
2002 | .can_transient = true, |
2003 | ||
04eb582a | 2004 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 2005 | .enumerate = mount_enumerate, |
c6918296 MS |
2006 | .shutdown = mount_shutdown, |
2007 | ||
2008 | .status_message_formats = { | |
2009 | .starting_stopping = { | |
2010 | [0] = "Mounting %s...", | |
2011 | [1] = "Unmounting %s...", | |
2012 | }, | |
2013 | .finished_start_job = { | |
2014 | [JOB_DONE] = "Mounted %s.", | |
2015 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2016 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2017 | }, | |
2018 | .finished_stop_job = { | |
2019 | [JOB_DONE] = "Unmounted %s.", | |
2020 | [JOB_FAILED] = "Failed unmounting %s.", | |
2021 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2022 | }, | |
2023 | }, | |
5cb5a6ff | 2024 | }; |