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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
5cb5a6ff | 3 | #include <errno.h> |
4f5dd394 | 4 | #include <signal.h> |
b08d03ff | 5 | #include <stdio.h> |
ef734fd6 | 6 | #include <sys/epoll.h> |
5cb5a6ff | 7 | |
227b8a76 MO |
8 | #include <libmount.h> |
9 | ||
20ad4cfd | 10 | #include "sd-messages.h" |
4f5dd394 | 11 | |
b5efdb8a | 12 | #include "alloc-util.h" |
4139c1b2 | 13 | #include "dbus-mount.h" |
57b7a260 | 14 | #include "device.h" |
4f5dd394 | 15 | #include "escape.h" |
9a57c629 | 16 | #include "exit-status.h" |
f97b34a6 | 17 | #include "format-util.h" |
4f5dd394 LP |
18 | #include "fstab-util.h" |
19 | #include "log.h" | |
20 | #include "manager.h" | |
21 | #include "mkdir.h" | |
22 | #include "mount-setup.h" | |
4e036b7a | 23 | #include "mount-util.h" |
4f5dd394 | 24 | #include "mount.h" |
6bedfcbb | 25 | #include "parse-util.h" |
4f5dd394 | 26 | #include "path-util.h" |
7b3e062c | 27 | #include "process-util.h" |
4f5dd394 | 28 | #include "special.h" |
8b43440b | 29 | #include "string-table.h" |
b5efdb8a | 30 | #include "string-util.h" |
4f5dd394 LP |
31 | #include "strv.h" |
32 | #include "unit-name.h" | |
33 | #include "unit.h" | |
5cb5a6ff | 34 | |
7d54a03a LP |
35 | #define RETRY_UMOUNT_MAX 32 |
36 | ||
4e920142 ZJS |
37 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table*, mnt_free_table); |
38 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter*, mnt_free_iter); | |
39 | ||
f50e0a01 LP |
40 | static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { |
41 | [MOUNT_DEAD] = UNIT_INACTIVE, | |
42 | [MOUNT_MOUNTING] = UNIT_ACTIVATING, | |
b6ba0c16 | 43 | [MOUNT_MOUNTING_DONE] = UNIT_ACTIVATING, |
f50e0a01 | 44 | [MOUNT_MOUNTED] = UNIT_ACTIVE, |
032ff4af | 45 | [MOUNT_REMOUNTING] = UNIT_RELOADING, |
f50e0a01 | 46 | [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING, |
032ff4af LP |
47 | [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING, |
48 | [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING, | |
e537352b LP |
49 | [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING, |
50 | [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 51 | [MOUNT_FAILED] = UNIT_FAILED |
f50e0a01 | 52 | }; |
5cb5a6ff | 53 | |
718db961 LP |
54 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
55 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
56 | ||
c634f3d2 LP |
57 | static bool MOUNT_STATE_WITH_PROCESS(MountState state) { |
58 | return IN_SET(state, | |
59 | MOUNT_MOUNTING, | |
60 | MOUNT_MOUNTING_DONE, | |
61 | MOUNT_REMOUNTING, | |
62 | MOUNT_REMOUNTING_SIGTERM, | |
63 | MOUNT_REMOUNTING_SIGKILL, | |
64 | MOUNT_UNMOUNTING, | |
65 | MOUNT_UNMOUNTING_SIGTERM, | |
66 | MOUNT_UNMOUNTING_SIGKILL); | |
67 | } | |
68 | ||
affc3d83 | 69 | static bool mount_needs_network(const char *options, const char *fstype) { |
d15d0333 | 70 | if (fstab_test_option(options, "_netdev\0")) |
fc676b00 ZJS |
71 | return true; |
72 | ||
affc3d83 | 73 | if (fstype && fstype_is_network(fstype)) |
fc676b00 ZJS |
74 | return true; |
75 | ||
76 | return false; | |
77 | } | |
78 | ||
e6a7b9f4 | 79 | static bool mount_is_network(const MountParameters *p) { |
affc3d83 CL |
80 | assert(p); |
81 | ||
82 | return mount_needs_network(p->options, p->fstype); | |
83 | } | |
84 | ||
d3bd0986 MK |
85 | static bool mount_is_loop(const MountParameters *p) { |
86 | assert(p); | |
87 | ||
88 | if (fstab_test_option(p->options, "loop\0")) | |
89 | return true; | |
90 | ||
91 | return false; | |
92 | } | |
93 | ||
e6a7b9f4 | 94 | static bool mount_is_bind(const MountParameters *p) { |
fc676b00 ZJS |
95 | assert(p); |
96 | ||
d15d0333 | 97 | if (fstab_test_option(p->options, "bind\0" "rbind\0")) |
fc676b00 ZJS |
98 | return true; |
99 | ||
d15d0333 | 100 | if (p->fstype && STR_IN_SET(p->fstype, "bind", "rbind")) |
fc676b00 ZJS |
101 | return true; |
102 | ||
103 | return false; | |
104 | } | |
105 | ||
e6a7b9f4 | 106 | static bool mount_is_auto(const MountParameters *p) { |
fc676b00 ZJS |
107 | assert(p); |
108 | ||
d15d0333 | 109 | return !fstab_test_option(p->options, "noauto\0"); |
fc676b00 ZJS |
110 | } |
111 | ||
2b14df4a FB |
112 | static bool mount_is_automount(const MountParameters *p) { |
113 | assert(p); | |
114 | ||
115 | return fstab_test_option(p->options, | |
116 | "comment=systemd.automount\0" | |
117 | "x-systemd.automount\0"); | |
118 | } | |
119 | ||
ebc8968b FB |
120 | static bool mount_is_bound_to_device(const Mount *m) { |
121 | const MountParameters *p; | |
122 | ||
123 | if (m->from_fragment) | |
124 | return true; | |
125 | ||
126 | p = &m->parameters_proc_self_mountinfo; | |
127 | return fstab_test_option(p->options, "x-systemd.device-bound\0"); | |
128 | } | |
129 | ||
e6a7b9f4 | 130 | static bool needs_quota(const MountParameters *p) { |
fc676b00 ZJS |
131 | assert(p); |
132 | ||
11041c84 | 133 | /* Quotas are not enabled on network filesystems, |
340a1d23 | 134 | * but we want them, for example, on storage connected via iscsi */ |
11041c84 | 135 | if (p->fstype && fstype_is_network(p->fstype)) |
fc676b00 ZJS |
136 | return false; |
137 | ||
138 | if (mount_is_bind(p)) | |
139 | return false; | |
140 | ||
d15d0333 ZJS |
141 | return fstab_test_option(p->options, |
142 | "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0"); | |
fc676b00 ZJS |
143 | } |
144 | ||
a16e1123 LP |
145 | static void mount_init(Unit *u) { |
146 | Mount *m = MOUNT(u); | |
5cb5a6ff | 147 | |
a16e1123 | 148 | assert(u); |
ac155bb8 | 149 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 150 | |
1f19a534 | 151 | m->timeout_usec = u->manager->default_timeout_start_usec; |
5804e1b6 AJ |
152 | |
153 | m->exec_context.std_output = u->manager->default_std_output; | |
154 | m->exec_context.std_error = u->manager->default_std_error; | |
155 | ||
3e5235b0 LP |
156 | m->directory_mode = 0755; |
157 | ||
f00929ad DJL |
158 | /* We need to make sure that /usr/bin/mount is always called |
159 | * in the same process group as us, so that the autofs kernel | |
a16e1123 LP |
160 | * side doesn't send us another mount request while we are |
161 | * already trying to comply its last one. */ | |
74922904 | 162 | m->exec_context.same_pgrp = true; |
8d567588 | 163 | |
a16e1123 | 164 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
c8f4d764 | 165 | |
5bcb0f2b | 166 | u->ignore_on_isolate = true; |
8d567588 LP |
167 | } |
168 | ||
36c16a7c | 169 | static int mount_arm_timer(Mount *m, usec_t usec) { |
718db961 LP |
170 | int r; |
171 | ||
172 | assert(m); | |
173 | ||
718db961 | 174 | if (m->timer_event_source) { |
36c16a7c | 175 | r = sd_event_source_set_time(m->timer_event_source, usec); |
718db961 LP |
176 | if (r < 0) |
177 | return r; | |
178 | ||
179 | return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT); | |
180 | } | |
181 | ||
36c16a7c LP |
182 | if (usec == USEC_INFINITY) |
183 | return 0; | |
184 | ||
7dfbe2e3 | 185 | r = sd_event_add_time( |
6a0f1f6d LP |
186 | UNIT(m)->manager->event, |
187 | &m->timer_event_source, | |
188 | CLOCK_MONOTONIC, | |
36c16a7c | 189 | usec, 0, |
6a0f1f6d | 190 | mount_dispatch_timer, m); |
7dfbe2e3 TG |
191 | if (r < 0) |
192 | return r; | |
193 | ||
194 | (void) sd_event_source_set_description(m->timer_event_source, "mount-timer"); | |
195 | ||
196 | return 0; | |
718db961 LP |
197 | } |
198 | ||
a16e1123 | 199 | static void mount_unwatch_control_pid(Mount *m) { |
5e94833f LP |
200 | assert(m); |
201 | ||
202 | if (m->control_pid <= 0) | |
203 | return; | |
204 | ||
205 | unit_unwatch_pid(UNIT(m), m->control_pid); | |
206 | m->control_pid = 0; | |
207 | } | |
208 | ||
e537352b LP |
209 | static void mount_parameters_done(MountParameters *p) { |
210 | assert(p); | |
211 | ||
212 | free(p->what); | |
213 | free(p->options); | |
214 | free(p->fstype); | |
215 | ||
216 | p->what = p->options = p->fstype = NULL; | |
217 | } | |
218 | ||
87f0e418 | 219 | static void mount_done(Unit *u) { |
ef734fd6 | 220 | Mount *m = MOUNT(u); |
034c6ed7 | 221 | |
ef734fd6 | 222 | assert(m); |
034c6ed7 | 223 | |
a1e58e8e | 224 | m->where = mfree(m->where); |
f50e0a01 | 225 | |
e537352b LP |
226 | mount_parameters_done(&m->parameters_proc_self_mountinfo); |
227 | mount_parameters_done(&m->parameters_fragment); | |
ef734fd6 | 228 | |
e8a565cb | 229 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, false); |
e537352b LP |
230 | exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
231 | m->control_command = NULL; | |
f50e0a01 | 232 | |
29206d46 LP |
233 | dynamic_creds_unref(&m->dynamic_creds); |
234 | ||
a16e1123 | 235 | mount_unwatch_control_pid(m); |
f50e0a01 | 236 | |
718db961 | 237 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
f50e0a01 LP |
238 | } |
239 | ||
44a6b1b6 | 240 | _pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { |
cb39ed3f LP |
241 | assert(m); |
242 | ||
243 | if (m->from_fragment) | |
244 | return &m->parameters_fragment; | |
cb39ed3f LP |
245 | |
246 | return NULL; | |
247 | } | |
248 | ||
44a6b1b6 | 249 | _pure_ static MountParameters* get_mount_parameters(Mount *m) { |
cb39ed3f LP |
250 | assert(m); |
251 | ||
252 | if (m->from_proc_self_mountinfo) | |
253 | return &m->parameters_proc_self_mountinfo; | |
254 | ||
6b1dc2bd | 255 | return get_mount_parameters_fragment(m); |
cb39ed3f LP |
256 | } |
257 | ||
eef85c4a | 258 | static int mount_add_mount_dependencies(Mount *m) { |
5c78d8e2 | 259 | MountParameters *pm; |
ac155bb8 | 260 | Unit *other; |
a57f7e2c LP |
261 | Iterator i; |
262 | Set *s; | |
b08d03ff LP |
263 | int r; |
264 | ||
6e2ef85b | 265 | assert(m); |
b08d03ff | 266 | |
a57f7e2c | 267 | if (!path_equal(m->where, "/")) { |
eef85c4a LP |
268 | _cleanup_free_ char *parent = NULL; |
269 | ||
270 | /* Adds in links to other mount points that might lie further up in the hierarchy */ | |
5f311f8c LP |
271 | |
272 | parent = dirname_malloc(m->where); | |
273 | if (!parent) | |
274 | return -ENOMEM; | |
01f78473 | 275 | |
eef85c4a | 276 | r = unit_require_mounts_for(UNIT(m), parent, UNIT_DEPENDENCY_IMPLICIT); |
4f0eedb7 | 277 | if (r < 0) |
01f78473 | 278 | return r; |
4f0eedb7 | 279 | } |
01f78473 | 280 | |
eef85c4a LP |
281 | /* Adds in dependencies to other mount points that might be needed for the source path (if this is a bind mount |
282 | * or a loop mount) to be available. */ | |
a57f7e2c | 283 | pm = get_mount_parameters_fragment(m); |
fc676b00 ZJS |
284 | if (pm && pm->what && |
285 | path_is_absolute(pm->what) && | |
d3bd0986 | 286 | (mount_is_bind(pm) || mount_is_loop(pm) || !mount_is_network(pm))) { |
fc676b00 | 287 | |
eef85c4a | 288 | r = unit_require_mounts_for(UNIT(m), pm->what, UNIT_DEPENDENCY_FILE); |
4f0eedb7 | 289 | if (r < 0) |
6e2ef85b | 290 | return r; |
4f0eedb7 | 291 | } |
b08d03ff | 292 | |
eef85c4a | 293 | /* Adds in dependencies to other units that use this path or paths further down in the hierarchy */ |
a57f7e2c LP |
294 | s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); |
295 | SET_FOREACH(other, s, i) { | |
b08d03ff | 296 | |
a57f7e2c LP |
297 | if (other->load_state != UNIT_LOADED) |
298 | continue; | |
b08d03ff | 299 | |
a57f7e2c LP |
300 | if (other == UNIT(m)) |
301 | continue; | |
b08d03ff | 302 | |
eef85c4a | 303 | r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
4f0eedb7 | 304 | if (r < 0) |
6e2ef85b | 305 | return r; |
b08d03ff | 306 | |
a57f7e2c LP |
307 | if (UNIT(m)->fragment_path) { |
308 | /* If we have fragment configuration, then make this dependency required */ | |
eef85c4a | 309 | r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true, UNIT_DEPENDENCY_PATH); |
a57f7e2c LP |
310 | if (r < 0) |
311 | return r; | |
312 | } | |
7c8fa05c LP |
313 | } |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
eef85c4a | 318 | static int mount_add_device_dependencies(Mount *m) { |
5073f89f | 319 | bool device_wants_mount = false; |
eef85c4a LP |
320 | UnitDependencyMask mask; |
321 | MountParameters *p; | |
ebc8968b | 322 | UnitDependency dep; |
9fff8a1f | 323 | int r; |
173a8d04 LP |
324 | |
325 | assert(m); | |
326 | ||
06e97888 | 327 | p = get_mount_parameters(m); |
6b1dc2bd | 328 | if (!p) |
173a8d04 LP |
329 | return 0; |
330 | ||
9fff8a1f | 331 | if (!p->what) |
173a8d04 | 332 | return 0; |
5c78d8e2 | 333 | |
dd144c63 LP |
334 | if (mount_is_bind(p)) |
335 | return 0; | |
336 | ||
337 | if (!is_device_path(p->what)) | |
338 | return 0; | |
339 | ||
7ba2711d LP |
340 | /* /dev/root is a really weird thing, it's not a real device, |
341 | * but just a path the kernel exports for the root file system | |
342 | * specified on the kernel command line. Ignore it here. */ | |
343 | if (path_equal(p->what, "/dev/root")) | |
344 | return 0; | |
345 | ||
dd144c63 LP |
346 | if (path_equal(m->where, "/")) |
347 | return 0; | |
348 | ||
463d0d15 | 349 | if (mount_is_auto(p) && !mount_is_automount(p) && MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
5073f89f TG |
350 | device_wants_mount = true; |
351 | ||
ebc8968b FB |
352 | /* Mount units from /proc/self/mountinfo are not bound to devices |
353 | * by default since they're subject to races when devices are | |
354 | * unplugged. But the user can still force this dep with an | |
355 | * appropriate option (or udev property) so the mount units are | |
356 | * automatically stopped when the device disappears suddenly. */ | |
357 | dep = mount_is_bound_to_device(m) ? UNIT_BINDS_TO : UNIT_REQUIRES; | |
358 | ||
eef85c4a LP |
359 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
360 | ||
361 | r = unit_add_node_dependency(UNIT(m), p->what, device_wants_mount, dep, mask); | |
dd144c63 LP |
362 | if (r < 0) |
363 | return r; | |
9fff8a1f | 364 | |
9fff8a1f | 365 | return 0; |
173a8d04 LP |
366 | } |
367 | ||
eef85c4a LP |
368 | static int mount_add_quota_dependencies(Mount *m) { |
369 | UnitDependencyMask mask; | |
6b1dc2bd | 370 | MountParameters *p; |
eef85c4a | 371 | int r; |
6b1dc2bd LP |
372 | |
373 | assert(m); | |
374 | ||
463d0d15 | 375 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) |
6b1dc2bd LP |
376 | return 0; |
377 | ||
378 | p = get_mount_parameters_fragment(m); | |
379 | if (!p) | |
380 | return 0; | |
381 | ||
382 | if (!needs_quota(p)) | |
383 | return 0; | |
384 | ||
eef85c4a LP |
385 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT; |
386 | ||
5a724170 | 387 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, true, mask); |
6b1dc2bd LP |
388 | if (r < 0) |
389 | return r; | |
390 | ||
5a724170 | 391 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, true, mask); |
6b1dc2bd LP |
392 | if (r < 0) |
393 | return r; | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
ad2706db | 398 | static bool mount_is_extrinsic(Mount *m) { |
88ac30a1 | 399 | MountParameters *p; |
ad2706db | 400 | assert(m); |
88ac30a1 | 401 | |
ad2706db LP |
402 | /* Returns true for all units that are "magic" and should be excluded from the usual start-up and shutdown |
403 | * dependencies. We call them "extrinsic" here, as they are generally mounted outside of the systemd dependency | |
404 | * logic. We shouldn't attempt to manage them ourselves but it's fine if the user operates on them with us. */ | |
405 | ||
406 | if (!MANAGER_IS_SYSTEM(UNIT(m)->manager)) /* We only automatically manage mounts if we are in system mode */ | |
407 | return true; | |
408 | ||
409 | if (PATH_IN_SET(m->where, /* Don't bother with the OS data itself */ | |
410 | "/", | |
411 | "/usr")) | |
412 | return true; | |
88ac30a1 | 413 | |
ad2706db LP |
414 | if (PATH_STARTSWITH_SET(m->where, |
415 | "/run/initramfs", /* This should stay around from before we boot until after we shutdown */ | |
416 | "/proc", /* All of this is API VFS */ | |
417 | "/sys", /* … dito … */ | |
418 | "/dev")) /* … dito … */ | |
419 | return true; | |
420 | ||
421 | /* If this is an initrd mount, and we are not in the initrd, then leave this around forever, too. */ | |
88ac30a1 | 422 | p = get_mount_parameters(m); |
ad2706db LP |
423 | if (p && fstab_test_option(p->options, "x-initrd.mount\0") && !in_initrd()) |
424 | return true; | |
88ac30a1 | 425 | |
ad2706db | 426 | return false; |
88ac30a1 TG |
427 | } |
428 | ||
2edd4434 | 429 | static int mount_add_default_dependencies(Mount *m) { |
eef85c4a LP |
430 | UnitDependencyMask mask; |
431 | int r; | |
9ddc4a26 | 432 | MountParameters *p; |
ea0ec5ce | 433 | const char *after; |
2edd4434 LP |
434 | |
435 | assert(m); | |
436 | ||
4c9ea260 LP |
437 | if (!UNIT(m)->default_dependencies) |
438 | return 0; | |
439 | ||
ad2706db LP |
440 | /* We do not add any default dependencies to /, /usr or /run/initramfs/, since they are guaranteed to stay |
441 | * mounted the whole time, since our system is on it. Also, don't bother with anything mounted below virtual | |
442 | * file systems, it's also going to be virtual, and hence not worth the effort. */ | |
443 | if (mount_is_extrinsic(m)) | |
6b1dc2bd | 444 | return 0; |
2edd4434 | 445 | |
874d3404 LP |
446 | p = get_mount_parameters(m); |
447 | if (!p) | |
6b1dc2bd LP |
448 | return 0; |
449 | ||
eef85c4a LP |
450 | mask = m->from_fragment ? UNIT_DEPENDENCY_FILE : UNIT_DEPENDENCY_MOUNTINFO_DEFAULT; |
451 | ||
e8d2f6cd | 452 | if (mount_is_network(p)) { |
ea0ec5ce LP |
453 | /* We order ourselves after network.target. This is |
454 | * primarily useful at shutdown: services that take | |
455 | * down the network should order themselves before | |
456 | * network.target, so that they are shut down only | |
457 | * after this mount unit is stopped. */ | |
6b1dc2bd | 458 | |
35d8c19a | 459 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_NETWORK_TARGET, true, mask); |
a63a5c46 LP |
460 | if (r < 0) |
461 | return r; | |
a63a5c46 | 462 | |
ea0ec5ce LP |
463 | /* We pull in network-online.target, and order |
464 | * ourselves after it. This is useful at start-up to | |
465 | * actively pull in tools that want to be started | |
466 | * before we start mounting network file systems, and | |
467 | * whose purpose it is to delay this until the network | |
468 | * is "up". */ | |
469 | ||
5a724170 | 470 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, SPECIAL_NETWORK_ONLINE_TARGET, true, mask); |
e8d2f6cd LP |
471 | if (r < 0) |
472 | return r; | |
ea0ec5ce LP |
473 | |
474 | after = SPECIAL_REMOTE_FS_PRE_TARGET; | |
475 | } else | |
476 | after = SPECIAL_LOCAL_FS_PRE_TARGET; | |
477 | ||
35d8c19a | 478 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, true, mask); |
ea0ec5ce LP |
479 | if (r < 0) |
480 | return r; | |
e8d2f6cd | 481 | |
5a724170 | 482 | r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, mask); |
ad2706db LP |
483 | if (r < 0) |
484 | return r; | |
2edd4434 | 485 | |
3e3852b3 | 486 | /* If this is a tmpfs mount then we have to unmount it before we try to deactivate swaps */ |
74b1731c | 487 | if (streq_ptr(p->fstype, "tmpfs")) { |
35d8c19a | 488 | r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SWAP_TARGET, true, mask); |
3e3852b3 LP |
489 | if (r < 0) |
490 | return r; | |
491 | } | |
492 | ||
2edd4434 LP |
493 | return 0; |
494 | } | |
495 | ||
8d567588 | 496 | static int mount_verify(Mount *m) { |
a57f7e2c | 497 | _cleanup_free_ char *e = NULL; |
b294b79f | 498 | MountParameters *p; |
7410616c | 499 | int r; |
a57f7e2c | 500 | |
8d567588 LP |
501 | assert(m); |
502 | ||
1124fe6f | 503 | if (UNIT(m)->load_state != UNIT_LOADED) |
8d567588 LP |
504 | return 0; |
505 | ||
1df96fcb | 506 | if (!m->from_fragment && !m->from_proc_self_mountinfo && !UNIT(m)->perpetual) |
8cbef760 LP |
507 | return -ENOENT; |
508 | ||
7410616c LP |
509 | r = unit_name_from_path(m->where, ".mount", &e); |
510 | if (r < 0) | |
f2341e0a | 511 | return log_unit_error_errno(UNIT(m), r, "Failed to generate unit name from mount path: %m"); |
8d567588 | 512 | |
7410616c | 513 | if (!unit_has_name(UNIT(m), e)) { |
f2341e0a | 514 | log_unit_error(UNIT(m), "Where= setting doesn't match unit name. Refusing."); |
6f40aa45 | 515 | return -ENOEXEC; |
8d567588 LP |
516 | } |
517 | ||
33ff02c9 | 518 | if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) { |
f2341e0a | 519 | log_unit_error(UNIT(m), "Cannot create mount unit for API file system %s. Refusing.", m->where); |
6f40aa45 | 520 | return -ENOEXEC; |
33ff02c9 LP |
521 | } |
522 | ||
b294b79f MO |
523 | p = get_mount_parameters_fragment(m); |
524 | if (p && !p->what) { | |
f2341e0a | 525 | log_unit_error(UNIT(m), "What= setting is missing. Refusing."); |
6f40aa45 | 526 | return -ENOEXEC; |
4e85aff4 LP |
527 | } |
528 | ||
4819ff03 | 529 | if (m->exec_context.pam_name && m->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 530 | log_unit_error(UNIT(m), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing."); |
6f40aa45 | 531 | return -ENOEXEC; |
4d0e5dbd LP |
532 | } |
533 | ||
8d567588 LP |
534 | return 0; |
535 | } | |
536 | ||
1a4ac875 MS |
537 | static int mount_add_extras(Mount *m) { |
538 | Unit *u = UNIT(m); | |
e537352b LP |
539 | int r; |
540 | ||
e821075a LP |
541 | assert(m); |
542 | ||
543 | if (u->fragment_path) | |
1a4ac875 | 544 | m->from_fragment = true; |
e537352b | 545 | |
1a4ac875 | 546 | if (!m->where) { |
7410616c LP |
547 | r = unit_name_to_path(u->id, &m->where); |
548 | if (r < 0) | |
549 | return r; | |
1a4ac875 | 550 | } |
a16e1123 | 551 | |
858d36c1 | 552 | path_simplify(m->where, false); |
e537352b | 553 | |
e821075a | 554 | if (!u->description) { |
1a4ac875 MS |
555 | r = unit_set_description(u, m->where); |
556 | if (r < 0) | |
173a8d04 | 557 | return r; |
1a4ac875 | 558 | } |
6e2ef85b | 559 | |
eef85c4a | 560 | r = mount_add_device_dependencies(m); |
1a4ac875 MS |
561 | if (r < 0) |
562 | return r; | |
6e2ef85b | 563 | |
eef85c4a | 564 | r = mount_add_mount_dependencies(m); |
1a4ac875 MS |
565 | if (r < 0) |
566 | return r; | |
6e2ef85b | 567 | |
eef85c4a | 568 | r = mount_add_quota_dependencies(m); |
1a4ac875 MS |
569 | if (r < 0) |
570 | return r; | |
e537352b | 571 | |
598459ce LP |
572 | r = unit_patch_contexts(u); |
573 | if (r < 0) | |
574 | return r; | |
4e67ddd6 | 575 | |
598459ce | 576 | r = unit_add_exec_dependencies(u, &m->exec_context); |
a016b922 LP |
577 | if (r < 0) |
578 | return r; | |
579 | ||
d79200e2 | 580 | r = unit_set_default_slice(u); |
1a4ac875 MS |
581 | if (r < 0) |
582 | return r; | |
583 | ||
4c9ea260 LP |
584 | r = mount_add_default_dependencies(m); |
585 | if (r < 0) | |
586 | return r; | |
598459ce | 587 | |
1a4ac875 MS |
588 | return 0; |
589 | } | |
590 | ||
11222d0f LP |
591 | static int mount_load_root_mount(Unit *u) { |
592 | assert(u); | |
593 | ||
594 | if (!unit_has_name(u, SPECIAL_ROOT_MOUNT)) | |
595 | return 0; | |
596 | ||
597 | u->perpetual = true; | |
598 | u->default_dependencies = false; | |
599 | ||
600 | /* The stdio/kmsg bridge socket is on /, in order to avoid a dep loop, don't use kmsg logging for -.mount */ | |
601 | MOUNT(u)->exec_context.std_output = EXEC_OUTPUT_NULL; | |
602 | MOUNT(u)->exec_context.std_input = EXEC_INPUT_NULL; | |
603 | ||
604 | if (!u->description) | |
605 | u->description = strdup("Root Mount"); | |
606 | ||
607 | return 1; | |
608 | } | |
609 | ||
1a4ac875 MS |
610 | static int mount_load(Unit *u) { |
611 | Mount *m = MOUNT(u); | |
612 | int r; | |
613 | ||
614 | assert(u); | |
615 | assert(u->load_state == UNIT_STUB); | |
616 | ||
11222d0f LP |
617 | r = mount_load_root_mount(u); |
618 | if (r < 0) | |
619 | return r; | |
620 | ||
621 | if (m->from_proc_self_mountinfo || u->perpetual) | |
8eba616f MS |
622 | r = unit_load_fragment_and_dropin_optional(u); |
623 | else | |
624 | r = unit_load_fragment_and_dropin(u); | |
1a4ac875 MS |
625 | if (r < 0) |
626 | return r; | |
155da457 | 627 | |
1a4ac875 MS |
628 | /* This is a new unit? Then let's add in some extras */ |
629 | if (u->load_state == UNIT_LOADED) { | |
630 | r = mount_add_extras(m); | |
631 | if (r < 0) | |
632 | return r; | |
e537352b LP |
633 | } |
634 | ||
8d567588 | 635 | return mount_verify(m); |
e537352b LP |
636 | } |
637 | ||
638 | static void mount_set_state(Mount *m, MountState state) { | |
639 | MountState old_state; | |
640 | assert(m); | |
641 | ||
642 | old_state = m->state; | |
643 | m->state = state; | |
644 | ||
c634f3d2 | 645 | if (!MOUNT_STATE_WITH_PROCESS(state)) { |
718db961 | 646 | m->timer_event_source = sd_event_source_unref(m->timer_event_source); |
a16e1123 | 647 | mount_unwatch_control_pid(m); |
e537352b | 648 | m->control_command = NULL; |
a16e1123 | 649 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; |
e537352b LP |
650 | } |
651 | ||
652 | if (state != old_state) | |
f2341e0a | 653 | log_unit_debug(UNIT(m), "Changed %s -> %s", mount_state_to_string(old_state), mount_state_to_string(state)); |
e537352b | 654 | |
2ad2e41a LP |
655 | unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], |
656 | m->reload_result == MOUNT_SUCCESS ? 0 : UNIT_NOTIFY_RELOAD_FAILURE); | |
e537352b LP |
657 | } |
658 | ||
be847e82 | 659 | static int mount_coldplug(Unit *u) { |
e537352b | 660 | Mount *m = MOUNT(u); |
a16e1123 LP |
661 | MountState new_state = MOUNT_DEAD; |
662 | int r; | |
e537352b LP |
663 | |
664 | assert(m); | |
665 | assert(m->state == MOUNT_DEAD); | |
666 | ||
a16e1123 LP |
667 | if (m->deserialized_state != m->state) |
668 | new_state = m->deserialized_state; | |
669 | else if (m->from_proc_self_mountinfo) | |
670 | new_state = MOUNT_MOUNTED; | |
e537352b | 671 | |
5bcb0f2b LP |
672 | if (new_state == m->state) |
673 | return 0; | |
e537352b | 674 | |
c386f588 LP |
675 | if (m->control_pid > 0 && |
676 | pid_is_unwaited(m->control_pid) && | |
c634f3d2 | 677 | MOUNT_STATE_WITH_PROCESS(new_state)) { |
5bcb0f2b LP |
678 | |
679 | r = unit_watch_pid(UNIT(m), m->control_pid); | |
680 | if (r < 0) | |
681 | return r; | |
e537352b | 682 | |
36c16a7c | 683 | r = mount_arm_timer(m, usec_add(u->state_change_timestamp.monotonic, m->timeout_usec)); |
5bcb0f2b LP |
684 | if (r < 0) |
685 | return r; | |
a16e1123 | 686 | } |
e537352b | 687 | |
e8a565cb | 688 | if (!IN_SET(new_state, MOUNT_DEAD, MOUNT_FAILED)) { |
29206d46 | 689 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
690 | (void) unit_setup_exec_runtime(u); |
691 | } | |
29206d46 | 692 | |
5bcb0f2b | 693 | mount_set_state(m, new_state); |
e537352b | 694 | return 0; |
e537352b LP |
695 | } |
696 | ||
697 | static void mount_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 698 | char buf[FORMAT_TIMESPAN_MAX]; |
e537352b LP |
699 | Mount *m = MOUNT(u); |
700 | MountParameters *p; | |
701 | ||
702 | assert(m); | |
703 | assert(f); | |
704 | ||
cb39ed3f | 705 | p = get_mount_parameters(m); |
e537352b LP |
706 | |
707 | fprintf(f, | |
708 | "%sMount State: %s\n" | |
81a5c6d0 | 709 | "%sResult: %s\n" |
e537352b LP |
710 | "%sWhere: %s\n" |
711 | "%sWhat: %s\n" | |
712 | "%sFile System Type: %s\n" | |
713 | "%sOptions: %s\n" | |
e537352b LP |
714 | "%sFrom /proc/self/mountinfo: %s\n" |
715 | "%sFrom fragment: %s\n" | |
ad2706db | 716 | "%sExtrinsic: %s\n" |
e520950a | 717 | "%sDirectoryMode: %04o\n" |
49915de2 | 718 | "%sSloppyOptions: %s\n" |
4f8d40a9 | 719 | "%sLazyUnmount: %s\n" |
91899792 YW |
720 | "%sForceUnmount: %s\n" |
721 | "%sTimoutSec: %s\n", | |
a16e1123 | 722 | prefix, mount_state_to_string(m->state), |
81a5c6d0 | 723 | prefix, mount_result_to_string(m->result), |
e537352b | 724 | prefix, m->where, |
1e4fc9b1 HH |
725 | prefix, p ? strna(p->what) : "n/a", |
726 | prefix, p ? strna(p->fstype) : "n/a", | |
727 | prefix, p ? strna(p->options) : "n/a", | |
e537352b LP |
728 | prefix, yes_no(m->from_proc_self_mountinfo), |
729 | prefix, yes_no(m->from_fragment), | |
ad2706db | 730 | prefix, yes_no(mount_is_extrinsic(m)), |
e520950a | 731 | prefix, m->directory_mode, |
49915de2 | 732 | prefix, yes_no(m->sloppy_options), |
4f8d40a9 | 733 | prefix, yes_no(m->lazy_unmount), |
91899792 YW |
734 | prefix, yes_no(m->force_unmount), |
735 | prefix, format_timespan(buf, sizeof(buf), m->timeout_usec, USEC_PER_SEC)); | |
e537352b LP |
736 | |
737 | if (m->control_pid > 0) | |
738 | fprintf(f, | |
ccd06097 ZJS |
739 | "%sControl PID: "PID_FMT"\n", |
740 | prefix, m->control_pid); | |
e537352b LP |
741 | |
742 | exec_context_dump(&m->exec_context, f, prefix); | |
4819ff03 | 743 | kill_context_dump(&m->kill_context, f, prefix); |
18f573aa | 744 | cgroup_context_dump(&m->cgroup_context, f, prefix); |
e537352b LP |
745 | } |
746 | ||
a16e1123 | 747 | static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { |
3c7416b6 | 748 | |
9fa95f85 | 749 | ExecParameters exec_params = { |
5686391b LP |
750 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
751 | .stdin_fd = -1, | |
752 | .stdout_fd = -1, | |
753 | .stderr_fd = -1, | |
754 | .exec_fd = -1, | |
9fa95f85 | 755 | }; |
3c7416b6 LP |
756 | pid_t pid; |
757 | int r; | |
a16e1123 LP |
758 | |
759 | assert(m); | |
760 | assert(c); | |
761 | assert(_pid); | |
762 | ||
3c7416b6 | 763 | r = unit_prepare_exec(UNIT(m)); |
29206d46 LP |
764 | if (r < 0) |
765 | return r; | |
766 | ||
36c16a7c | 767 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 768 | if (r < 0) |
36c16a7c | 769 | return r; |
a16e1123 | 770 | |
f0d47797 | 771 | unit_set_exec_params(UNIT(m), &exec_params); |
9fa95f85 | 772 | |
f2341e0a LP |
773 | r = exec_spawn(UNIT(m), |
774 | c, | |
4ad49000 | 775 | &m->exec_context, |
9fa95f85 | 776 | &exec_params, |
613b411c | 777 | m->exec_runtime, |
29206d46 | 778 | &m->dynamic_creds, |
4ad49000 LP |
779 | &pid); |
780 | if (r < 0) | |
36c16a7c | 781 | return r; |
a16e1123 | 782 | |
4ad49000 LP |
783 | r = unit_watch_pid(UNIT(m), pid); |
784 | if (r < 0) | |
a16e1123 | 785 | /* FIXME: we need to do something here */ |
36c16a7c | 786 | return r; |
a16e1123 LP |
787 | |
788 | *_pid = pid; | |
789 | ||
790 | return 0; | |
a16e1123 LP |
791 | } |
792 | ||
9d2f5178 | 793 | static void mount_enter_dead(Mount *m, MountResult f) { |
e537352b LP |
794 | assert(m); |
795 | ||
a0fef983 | 796 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 797 | m->result = f; |
e537352b | 798 | |
ed77d407 LP |
799 | if (m->result != MOUNT_SUCCESS) |
800 | log_unit_warning(UNIT(m), "Failed with result '%s'.", mount_result_to_string(m->result)); | |
801 | ||
29206d46 LP |
802 | mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); |
803 | ||
e8a565cb | 804 | m->exec_runtime = exec_runtime_unref(m->exec_runtime, true); |
613b411c | 805 | |
3536f49e | 806 | exec_context_destroy_runtime_directory(&m->exec_context, UNIT(m)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 807 | |
00d9ef85 LP |
808 | unit_unref_uid_gid(UNIT(m), true); |
809 | ||
29206d46 | 810 | dynamic_creds_destroy(&m->dynamic_creds); |
e537352b LP |
811 | } |
812 | ||
9d2f5178 | 813 | static void mount_enter_mounted(Mount *m, MountResult f) { |
80876c20 LP |
814 | assert(m); |
815 | ||
a0fef983 | 816 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 817 | m->result = f; |
80876c20 LP |
818 | |
819 | mount_set_state(m, MOUNT_MOUNTED); | |
820 | } | |
821 | ||
22af0e58 LP |
822 | static void mount_enter_dead_or_mounted(Mount *m, MountResult f) { |
823 | assert(m); | |
824 | ||
825 | /* Enter DEAD or MOUNTED state, depending on what the kernel currently says about the mount point. We use this | |
826 | * whenever we executed an operation, so that our internal state reflects what the kernel says again, after all | |
827 | * ultimately we just mirror the kernel's internal state on this. */ | |
828 | ||
829 | if (m->from_proc_self_mountinfo) | |
830 | mount_enter_mounted(m, f); | |
831 | else | |
832 | mount_enter_dead(m, f); | |
833 | } | |
834 | ||
835 | static int state_to_kill_operation(MountState state) { | |
836 | switch (state) { | |
837 | ||
838 | case MOUNT_REMOUNTING_SIGTERM: | |
839 | case MOUNT_UNMOUNTING_SIGTERM: | |
840 | return KILL_TERMINATE; | |
841 | ||
842 | case MOUNT_REMOUNTING_SIGKILL: | |
843 | case MOUNT_UNMOUNTING_SIGKILL: | |
844 | return KILL_KILL; | |
845 | ||
846 | default: | |
847 | return _KILL_OPERATION_INVALID; | |
848 | } | |
849 | } | |
850 | ||
9d2f5178 | 851 | static void mount_enter_signal(Mount *m, MountState state, MountResult f) { |
e537352b LP |
852 | int r; |
853 | ||
854 | assert(m); | |
855 | ||
a0fef983 | 856 | if (m->result == MOUNT_SUCCESS) |
9d2f5178 | 857 | m->result = f; |
e537352b | 858 | |
cd2086fe LP |
859 | r = unit_kill_context( |
860 | UNIT(m), | |
861 | &m->kill_context, | |
22af0e58 | 862 | state_to_kill_operation(state), |
cd2086fe LP |
863 | -1, |
864 | m->control_pid, | |
865 | false); | |
866 | if (r < 0) | |
867 | goto fail; | |
e537352b | 868 | |
cd2086fe | 869 | if (r > 0) { |
36c16a7c | 870 | r = mount_arm_timer(m, usec_add(now(CLOCK_MONOTONIC), m->timeout_usec)); |
36697dc0 | 871 | if (r < 0) |
80876c20 | 872 | goto fail; |
e537352b | 873 | |
80876c20 | 874 | mount_set_state(m, state); |
22af0e58 | 875 | } else if (state == MOUNT_REMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 876 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); |
22af0e58 | 877 | else if (IN_SET(state, MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL)) |
9d2f5178 | 878 | mount_enter_mounted(m, MOUNT_SUCCESS); |
22af0e58 | 879 | else if (state == MOUNT_UNMOUNTING_SIGTERM && m->kill_context.send_sigkill) |
ac84d1fb | 880 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_SUCCESS); |
80876c20 | 881 | else |
22af0e58 | 882 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
883 | |
884 | return; | |
885 | ||
886 | fail: | |
f2341e0a | 887 | log_unit_warning_errno(UNIT(m), r, "Failed to kill processes: %m"); |
22af0e58 | 888 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
5261ba90 TT |
889 | } |
890 | ||
9d2f5178 | 891 | static void mount_enter_unmounting(Mount *m) { |
e537352b LP |
892 | int r; |
893 | ||
894 | assert(m); | |
895 | ||
7d54a03a LP |
896 | /* Start counting our attempts */ |
897 | if (!IN_SET(m->state, | |
898 | MOUNT_UNMOUNTING, | |
899 | MOUNT_UNMOUNTING_SIGTERM, | |
900 | MOUNT_UNMOUNTING_SIGKILL)) | |
901 | m->n_retry_umount = 0; | |
902 | ||
a16e1123 LP |
903 | m->control_command_id = MOUNT_EXEC_UNMOUNT; |
904 | m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT; | |
e537352b | 905 | |
83897d54 | 906 | r = exec_command_set(m->control_command, UMOUNT_PATH, m->where, "-c", NULL); |
e520950a BR |
907 | if (r >= 0 && m->lazy_unmount) |
908 | r = exec_command_append(m->control_command, "-l", NULL); | |
4f8d40a9 BR |
909 | if (r >= 0 && m->force_unmount) |
910 | r = exec_command_append(m->control_command, "-f", NULL); | |
7d54a03a | 911 | if (r < 0) |
e537352b LP |
912 | goto fail; |
913 | ||
a16e1123 | 914 | mount_unwatch_control_pid(m); |
5e94833f | 915 | |
7d54a03a LP |
916 | r = mount_spawn(m, m->control_command, &m->control_pid); |
917 | if (r < 0) | |
e537352b LP |
918 | goto fail; |
919 | ||
920 | mount_set_state(m, MOUNT_UNMOUNTING); | |
921 | ||
922 | return; | |
923 | ||
924 | fail: | |
f2341e0a | 925 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'umount' task: %m"); |
22af0e58 | 926 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
927 | } |
928 | ||
8d567588 | 929 | static void mount_enter_mounting(Mount *m) { |
e537352b | 930 | int r; |
cb39ed3f | 931 | MountParameters *p; |
e537352b LP |
932 | |
933 | assert(m); | |
934 | ||
25cd4964 | 935 | r = unit_fail_if_noncanonical(UNIT(m), m->where); |
f2341e0a LP |
936 | if (r < 0) |
937 | goto fail; | |
938 | ||
939 | (void) mkdir_p_label(m->where, m->directory_mode); | |
3e5235b0 | 940 | |
f2341e0a | 941 | unit_warn_if_dir_nonempty(UNIT(m), m->where); |
257f1d8e | 942 | |
a4634b21 LP |
943 | unit_warn_leftover_processes(UNIT(m)); |
944 | ||
945 | m->control_command_id = MOUNT_EXEC_MOUNT; | |
946 | m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; | |
947 | ||
cb39ed3f | 948 | /* Create the source directory for bind-mounts if needed */ |
6b1dc2bd | 949 | p = get_mount_parameters_fragment(m); |
cb39ed3f | 950 | if (p && mount_is_bind(p)) |
f2341e0a | 951 | (void) mkdir_p_label(p->what, m->directory_mode); |
5261ba90 | 952 | |
b294b79f | 953 | if (p) { |
17a1c597 ZJS |
954 | _cleanup_free_ char *opts = NULL; |
955 | ||
b294b79f | 956 | r = fstab_filter_options(p->options, "nofail\0" "noauto\0" "auto\0", NULL, NULL, &opts); |
17a1c597 ZJS |
957 | if (r < 0) |
958 | goto fail; | |
959 | ||
b294b79f | 960 | r = exec_command_set(m->control_command, MOUNT_PATH, p->what, m->where, NULL); |
e86b3761 ZJS |
961 | if (r >= 0 && m->sloppy_options) |
962 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
963 | if (r >= 0 && p->fstype) |
964 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
0c47569a | 965 | if (r >= 0 && !isempty(opts)) |
17a1c597 | 966 | r = exec_command_append(m->control_command, "-o", opts, NULL); |
e86b3761 | 967 | } else |
e537352b | 968 | r = -ENOENT; |
e537352b LP |
969 | if (r < 0) |
970 | goto fail; | |
971 | ||
a16e1123 | 972 | mount_unwatch_control_pid(m); |
5e94833f | 973 | |
257f1d8e LP |
974 | r = mount_spawn(m, m->control_command, &m->control_pid); |
975 | if (r < 0) | |
e537352b LP |
976 | goto fail; |
977 | ||
978 | mount_set_state(m, MOUNT_MOUNTING); | |
979 | ||
980 | return; | |
981 | ||
982 | fail: | |
f2341e0a | 983 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'mount' task: %m"); |
22af0e58 | 984 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_RESOURCES); |
e537352b LP |
985 | } |
986 | ||
850b7410 LP |
987 | static void mount_set_reload_result(Mount *m, MountResult result) { |
988 | assert(m); | |
989 | ||
990 | /* Only store the first error we encounter */ | |
991 | if (m->reload_result != MOUNT_SUCCESS) | |
992 | return; | |
993 | ||
994 | m->reload_result = result; | |
995 | } | |
996 | ||
9d2f5178 | 997 | static void mount_enter_remounting(Mount *m) { |
e537352b | 998 | int r; |
b294b79f | 999 | MountParameters *p; |
e537352b LP |
1000 | |
1001 | assert(m); | |
1002 | ||
850b7410 LP |
1003 | /* Reset reload result when we are about to start a new remount operation */ |
1004 | m->reload_result = MOUNT_SUCCESS; | |
1005 | ||
a16e1123 LP |
1006 | m->control_command_id = MOUNT_EXEC_REMOUNT; |
1007 | m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT; | |
e537352b | 1008 | |
b294b79f MO |
1009 | p = get_mount_parameters_fragment(m); |
1010 | if (p) { | |
e537352b LP |
1011 | const char *o; |
1012 | ||
b294b79f MO |
1013 | if (p->options) |
1014 | o = strjoina("remount,", p->options); | |
718db961 | 1015 | else |
e537352b LP |
1016 | o = "remount"; |
1017 | ||
f00929ad | 1018 | r = exec_command_set(m->control_command, MOUNT_PATH, |
b294b79f | 1019 | p->what, m->where, |
e86b3761 | 1020 | "-o", o, NULL); |
e86b3761 ZJS |
1021 | if (r >= 0 && m->sloppy_options) |
1022 | r = exec_command_append(m->control_command, "-s", NULL); | |
b294b79f MO |
1023 | if (r >= 0 && p->fstype) |
1024 | r = exec_command_append(m->control_command, "-t", p->fstype, NULL); | |
6b1dc2bd | 1025 | } else |
e537352b | 1026 | r = -ENOENT; |
60b912f6 | 1027 | if (r < 0) |
e537352b | 1028 | goto fail; |
e537352b | 1029 | |
a16e1123 | 1030 | mount_unwatch_control_pid(m); |
5e94833f | 1031 | |
718db961 LP |
1032 | r = mount_spawn(m, m->control_command, &m->control_pid); |
1033 | if (r < 0) | |
e537352b LP |
1034 | goto fail; |
1035 | ||
1036 | mount_set_state(m, MOUNT_REMOUNTING); | |
1037 | ||
1038 | return; | |
1039 | ||
1040 | fail: | |
f2341e0a | 1041 | log_unit_warning_errno(UNIT(m), r, "Failed to run 'remount' task: %m"); |
850b7410 | 1042 | mount_set_reload_result(m, MOUNT_FAILURE_RESOURCES); |
22af0e58 | 1043 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); |
e537352b LP |
1044 | } |
1045 | ||
1046 | static int mount_start(Unit *u) { | |
1047 | Mount *m = MOUNT(u); | |
07299350 | 1048 | int r; |
e537352b LP |
1049 | |
1050 | assert(m); | |
1051 | ||
1052 | /* We cannot fulfill this request right now, try again later | |
1053 | * please! */ | |
f2aed307 LP |
1054 | if (IN_SET(m->state, |
1055 | MOUNT_UNMOUNTING, | |
1056 | MOUNT_UNMOUNTING_SIGTERM, | |
22af0e58 | 1057 | MOUNT_UNMOUNTING_SIGKILL)) |
e537352b LP |
1058 | return -EAGAIN; |
1059 | ||
1060 | /* Already on it! */ | |
60b912f6 | 1061 | if (m->state == MOUNT_MOUNTING) |
e537352b LP |
1062 | return 0; |
1063 | ||
f2aed307 | 1064 | assert(IN_SET(m->state, MOUNT_DEAD, MOUNT_FAILED)); |
e537352b | 1065 | |
07299350 LP |
1066 | r = unit_start_limit_test(u); |
1067 | if (r < 0) { | |
1068 | mount_enter_dead(m, MOUNT_FAILURE_START_LIMIT_HIT); | |
1069 | return r; | |
1070 | } | |
1071 | ||
4b58153d LP |
1072 | r = unit_acquire_invocation_id(u); |
1073 | if (r < 0) | |
1074 | return r; | |
1075 | ||
9d2f5178 LP |
1076 | m->result = MOUNT_SUCCESS; |
1077 | m->reload_result = MOUNT_SUCCESS; | |
6a1d4d9f | 1078 | exec_command_reset_status_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); |
3c7416b6 LP |
1079 | |
1080 | u->reset_accounting = true; | |
9d2f5178 | 1081 | |
8d567588 | 1082 | mount_enter_mounting(m); |
82a2b6bb | 1083 | return 1; |
e537352b LP |
1084 | } |
1085 | ||
1086 | static int mount_stop(Unit *u) { | |
1087 | Mount *m = MOUNT(u); | |
1088 | ||
1089 | assert(m); | |
1090 | ||
22af0e58 LP |
1091 | switch (m->state) { |
1092 | ||
1093 | case MOUNT_UNMOUNTING: | |
1094 | case MOUNT_UNMOUNTING_SIGKILL: | |
1095 | case MOUNT_UNMOUNTING_SIGTERM: | |
1096 | /* Already on it */ | |
e537352b LP |
1097 | return 0; |
1098 | ||
22af0e58 LP |
1099 | case MOUNT_MOUNTING: |
1100 | case MOUNT_MOUNTING_DONE: | |
1101 | case MOUNT_REMOUNTING: | |
1102 | /* If we are still waiting for /bin/mount, we go directly into kill mode. */ | |
1103 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
1104 | return 0; | |
e537352b | 1105 | |
22af0e58 LP |
1106 | case MOUNT_REMOUNTING_SIGTERM: |
1107 | /* If we are already waiting for a hung remount, convert this to the matching unmounting state */ | |
1108 | mount_set_state(m, MOUNT_UNMOUNTING_SIGTERM); | |
1109 | return 0; | |
1110 | ||
1111 | case MOUNT_REMOUNTING_SIGKILL: | |
1112 | /* as above */ | |
1113 | mount_set_state(m, MOUNT_UNMOUNTING_SIGKILL); | |
1114 | return 0; | |
1115 | ||
1116 | case MOUNT_MOUNTED: | |
1117 | mount_enter_unmounting(m); | |
1118 | return 1; | |
1119 | ||
1120 | default: | |
1121 | assert_not_reached("Unexpected state."); | |
1122 | } | |
e537352b LP |
1123 | } |
1124 | ||
1125 | static int mount_reload(Unit *u) { | |
1126 | Mount *m = MOUNT(u); | |
1127 | ||
1128 | assert(m); | |
e537352b LP |
1129 | assert(m->state == MOUNT_MOUNTED); |
1130 | ||
9d2f5178 | 1131 | mount_enter_remounting(m); |
22af0e58 | 1132 | |
2d018ae2 | 1133 | return 1; |
e537352b LP |
1134 | } |
1135 | ||
a16e1123 LP |
1136 | static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { |
1137 | Mount *m = MOUNT(u); | |
1138 | ||
1139 | assert(m); | |
1140 | assert(f); | |
1141 | assert(fds); | |
1142 | ||
1143 | unit_serialize_item(u, f, "state", mount_state_to_string(m->state)); | |
9d2f5178 LP |
1144 | unit_serialize_item(u, f, "result", mount_result_to_string(m->result)); |
1145 | unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result)); | |
a16e1123 LP |
1146 | |
1147 | if (m->control_pid > 0) | |
ccd06097 | 1148 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, m->control_pid); |
a16e1123 LP |
1149 | |
1150 | if (m->control_command_id >= 0) | |
1151 | unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); | |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1157 | Mount *m = MOUNT(u); | |
a16e1123 LP |
1158 | |
1159 | assert(u); | |
1160 | assert(key); | |
1161 | assert(value); | |
1162 | assert(fds); | |
1163 | ||
1164 | if (streq(key, "state")) { | |
1165 | MountState state; | |
1166 | ||
1167 | if ((state = mount_state_from_string(value)) < 0) | |
f2341e0a | 1168 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
1169 | else |
1170 | m->deserialized_state = state; | |
9d2f5178 LP |
1171 | } else if (streq(key, "result")) { |
1172 | MountResult f; | |
a16e1123 | 1173 | |
9d2f5178 LP |
1174 | f = mount_result_from_string(value); |
1175 | if (f < 0) | |
f2341e0a | 1176 | log_unit_debug(u, "Failed to parse result value: %s", value); |
9d2f5178 LP |
1177 | else if (f != MOUNT_SUCCESS) |
1178 | m->result = f; | |
1179 | ||
1180 | } else if (streq(key, "reload-result")) { | |
1181 | MountResult f; | |
1182 | ||
1183 | f = mount_result_from_string(value); | |
1184 | if (f < 0) | |
f2341e0a | 1185 | log_unit_debug(u, "Failed to parse reload result value: %s", value); |
9d2f5178 LP |
1186 | else if (f != MOUNT_SUCCESS) |
1187 | m->reload_result = f; | |
a16e1123 LP |
1188 | |
1189 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1190 | pid_t pid; |
a16e1123 | 1191 | |
e364ad06 | 1192 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 1193 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 1194 | else |
5925dd3c | 1195 | m->control_pid = pid; |
a16e1123 LP |
1196 | } else if (streq(key, "control-command")) { |
1197 | MountExecCommand id; | |
1198 | ||
f2341e0a LP |
1199 | id = mount_exec_command_from_string(value); |
1200 | if (id < 0) | |
1201 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); | |
a16e1123 LP |
1202 | else { |
1203 | m->control_command_id = id; | |
1204 | m->control_command = m->exec_command + id; | |
1205 | } | |
a16e1123 | 1206 | } else |
f2341e0a | 1207 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
1208 | |
1209 | return 0; | |
1210 | } | |
1211 | ||
44a6b1b6 | 1212 | _pure_ static UnitActiveState mount_active_state(Unit *u) { |
e537352b LP |
1213 | assert(u); |
1214 | ||
1215 | return state_translation_table[MOUNT(u)->state]; | |
1216 | } | |
1217 | ||
44a6b1b6 | 1218 | _pure_ static const char *mount_sub_state_to_string(Unit *u) { |
10a94420 LP |
1219 | assert(u); |
1220 | ||
a16e1123 | 1221 | return mount_state_to_string(MOUNT(u)->state); |
10a94420 LP |
1222 | } |
1223 | ||
f2f725e5 | 1224 | _pure_ static bool mount_may_gc(Unit *u) { |
701cc384 LP |
1225 | Mount *m = MOUNT(u); |
1226 | ||
1227 | assert(m); | |
1228 | ||
f2f725e5 ZJS |
1229 | if (m->from_proc_self_mountinfo) |
1230 | return false; | |
1231 | ||
1232 | return true; | |
701cc384 LP |
1233 | } |
1234 | ||
e537352b LP |
1235 | static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1236 | Mount *m = MOUNT(u); | |
9d2f5178 | 1237 | MountResult f; |
e537352b LP |
1238 | |
1239 | assert(m); | |
1240 | assert(pid >= 0); | |
1241 | ||
8c47c732 LP |
1242 | if (pid != m->control_pid) |
1243 | return; | |
e537352b | 1244 | |
e537352b LP |
1245 | m->control_pid = 0; |
1246 | ||
1f0958f6 | 1247 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
9d2f5178 LP |
1248 | f = MOUNT_SUCCESS; |
1249 | else if (code == CLD_EXITED) | |
1250 | f = MOUNT_FAILURE_EXIT_CODE; | |
1251 | else if (code == CLD_KILLED) | |
1252 | f = MOUNT_FAILURE_SIGNAL; | |
1253 | else if (code == CLD_DUMPED) | |
1254 | f = MOUNT_FAILURE_CORE_DUMP; | |
1255 | else | |
1256 | assert_not_reached("Unknown code"); | |
1257 | ||
850b7410 LP |
1258 | if (IN_SET(m->state, MOUNT_REMOUNTING, MOUNT_REMOUNTING_SIGKILL, MOUNT_REMOUNTING_SIGTERM)) |
1259 | mount_set_reload_result(m, f); | |
1260 | else if (m->result == MOUNT_SUCCESS) | |
9d2f5178 | 1261 | m->result = f; |
8c47c732 | 1262 | |
a16e1123 | 1263 | if (m->control_command) { |
6ea832a2 | 1264 | exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status); |
9d2f5178 | 1265 | |
a16e1123 LP |
1266 | m->control_command = NULL; |
1267 | m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID; | |
1268 | } | |
1269 | ||
f2341e0a LP |
1270 | log_unit_full(u, f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1271 | "Mount process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e537352b | 1272 | |
006aabbd AJ |
1273 | /* Note that due to the io event priority logic, we can be sure the new mountinfo is loaded |
1274 | * before we process the SIGCHLD for the mount command. */ | |
e537352b LP |
1275 | |
1276 | switch (m->state) { | |
1277 | ||
1278 | case MOUNT_MOUNTING: | |
006aabbd | 1279 | /* Our mount point has not appeared in mountinfo. Something went wrong. */ |
e537352b | 1280 | |
006aabbd AJ |
1281 | if (f == MOUNT_SUCCESS) { |
1282 | /* Either /bin/mount has an unexpected definition of success, | |
1283 | * or someone raced us and we lost. */ | |
1284 | log_unit_warning(UNIT(m), "Mount process finished, but there is no mount."); | |
1285 | f = MOUNT_FAILURE_PROTOCOL; | |
1286 | } | |
1287 | mount_enter_dead(m, f); | |
1288 | break; | |
1289 | ||
1290 | case MOUNT_MOUNTING_DONE: | |
1291 | mount_enter_mounted(m, f); | |
e537352b LP |
1292 | break; |
1293 | ||
e2f3b44c | 1294 | case MOUNT_REMOUNTING: |
e2f3b44c | 1295 | case MOUNT_REMOUNTING_SIGTERM: |
22af0e58 LP |
1296 | case MOUNT_REMOUNTING_SIGKILL: |
1297 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
e2f3b44c LP |
1298 | break; |
1299 | ||
e537352b | 1300 | case MOUNT_UNMOUNTING: |
e537352b | 1301 | |
3cc96856 | 1302 | if (f == MOUNT_SUCCESS && m->from_proc_self_mountinfo) { |
22af0e58 LP |
1303 | |
1304 | /* Still a mount point? If so, let's try again. Most likely there were multiple mount points | |
57018361 AJ |
1305 | * stacked on top of each other. We might exceed the timeout specified by the user overall, |
1306 | * but we will stop as soon as any one umount times out. */ | |
22af0e58 LP |
1307 | |
1308 | if (m->n_retry_umount < RETRY_UMOUNT_MAX) { | |
1309 | log_unit_debug(u, "Mount still present, trying again."); | |
1310 | m->n_retry_umount++; | |
1311 | mount_enter_unmounting(m); | |
1312 | } else { | |
006aabbd | 1313 | log_unit_warning(u, "Mount still present after %u attempts to unmount, giving up.", m->n_retry_umount); |
22af0e58 LP |
1314 | mount_enter_mounted(m, f); |
1315 | } | |
1316 | } else | |
3cc96856 | 1317 | mount_enter_dead_or_mounted(m, f); |
22af0e58 | 1318 | |
e537352b | 1319 | break; |
57018361 AJ |
1320 | |
1321 | case MOUNT_UNMOUNTING_SIGKILL: | |
1322 | case MOUNT_UNMOUNTING_SIGTERM: | |
1323 | mount_enter_dead_or_mounted(m, f); | |
1324 | break; | |
e537352b LP |
1325 | |
1326 | default: | |
1327 | assert_not_reached("Uh, control process died at wrong time."); | |
1328 | } | |
c4e2ceae LP |
1329 | |
1330 | /* Notify clients about changed exit status */ | |
1331 | unit_add_to_dbus_queue(u); | |
e537352b LP |
1332 | } |
1333 | ||
718db961 LP |
1334 | static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1335 | Mount *m = MOUNT(userdata); | |
e537352b LP |
1336 | |
1337 | assert(m); | |
718db961 | 1338 | assert(m->timer_event_source == source); |
e537352b LP |
1339 | |
1340 | switch (m->state) { | |
1341 | ||
1342 | case MOUNT_MOUNTING: | |
1343 | case MOUNT_MOUNTING_DONE: | |
22af0e58 LP |
1344 | log_unit_warning(UNIT(m), "Mounting timed out. Terminating."); |
1345 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1346 | break; |
1347 | ||
1348 | case MOUNT_REMOUNTING: | |
79aafbd1 | 1349 | log_unit_warning(UNIT(m), "Remounting timed out. Terminating remount process."); |
22af0e58 LP |
1350 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); |
1351 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, MOUNT_SUCCESS); | |
e537352b LP |
1352 | break; |
1353 | ||
22af0e58 LP |
1354 | case MOUNT_REMOUNTING_SIGTERM: |
1355 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b | 1356 | |
4819ff03 | 1357 | if (m->kill_context.send_sigkill) { |
22af0e58 LP |
1358 | log_unit_warning(UNIT(m), "Remounting timed out. Killing."); |
1359 | mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_SUCCESS); | |
ba035df2 | 1360 | } else { |
22af0e58 LP |
1361 | log_unit_warning(UNIT(m), "Remounting timed out. Skipping SIGKILL. Ignoring."); |
1362 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
ba035df2 | 1363 | } |
e537352b LP |
1364 | break; |
1365 | ||
22af0e58 LP |
1366 | case MOUNT_REMOUNTING_SIGKILL: |
1367 | mount_set_reload_result(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1368 | |
22af0e58 LP |
1369 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1370 | mount_enter_dead_or_mounted(m, MOUNT_SUCCESS); | |
1371 | break; | |
1372 | ||
1373 | case MOUNT_UNMOUNTING: | |
79aafbd1 | 1374 | log_unit_warning(UNIT(m), "Unmounting timed out. Terminating."); |
22af0e58 | 1375 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT); |
e537352b LP |
1376 | break; |
1377 | ||
1378 | case MOUNT_UNMOUNTING_SIGTERM: | |
4819ff03 | 1379 | if (m->kill_context.send_sigkill) { |
22af0e58 | 1380 | log_unit_warning(UNIT(m), "Mount process timed out. Killing."); |
9d2f5178 | 1381 | mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT); |
ba035df2 | 1382 | } else { |
22af0e58 LP |
1383 | log_unit_warning(UNIT(m), "Mount process timed out. Skipping SIGKILL. Ignoring."); |
1384 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
ba035df2 | 1385 | } |
e537352b LP |
1386 | break; |
1387 | ||
e537352b | 1388 | case MOUNT_UNMOUNTING_SIGKILL: |
22af0e58 LP |
1389 | log_unit_warning(UNIT(m), "Mount process still around after SIGKILL. Ignoring."); |
1390 | mount_enter_dead_or_mounted(m, MOUNT_FAILURE_TIMEOUT); | |
e537352b LP |
1391 | break; |
1392 | ||
1393 | default: | |
1394 | assert_not_reached("Timeout at wrong time."); | |
1395 | } | |
718db961 LP |
1396 | |
1397 | return 0; | |
e537352b LP |
1398 | } |
1399 | ||
03b8cfed FB |
1400 | typedef struct { |
1401 | bool is_mounted; | |
1402 | bool just_mounted; | |
1403 | bool just_changed; | |
1404 | } MountSetupFlags; | |
1405 | ||
1406 | static int mount_setup_new_unit( | |
1407 | Unit *u, | |
1408 | const char *what, | |
1409 | const char *where, | |
1410 | const char *options, | |
1411 | const char *fstype, | |
1412 | MountSetupFlags *flags) { | |
1413 | ||
1414 | MountParameters *p; | |
1415 | ||
1416 | assert(u); | |
1417 | assert(flags); | |
1418 | ||
1419 | u->source_path = strdup("/proc/self/mountinfo"); | |
1420 | MOUNT(u)->where = strdup(where); | |
a51ee72d | 1421 | if (!u->source_path || !MOUNT(u)->where) |
03b8cfed FB |
1422 | return -ENOMEM; |
1423 | ||
1424 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1425 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1426 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1427 | ||
1428 | p->what = strdup(what); | |
1429 | p->options = strdup(options); | |
1430 | p->fstype = strdup(fstype); | |
1431 | if (!p->what || !p->options || !p->fstype) | |
1432 | return -ENOMEM; | |
1433 | ||
1434 | if (!mount_is_extrinsic(MOUNT(u))) { | |
1435 | const char *target; | |
1436 | int r; | |
1437 | ||
1438 | target = mount_is_network(p) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; | |
35d8c19a | 1439 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1440 | if (r < 0) |
1441 | return r; | |
1442 | ||
35d8c19a | 1443 | r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1444 | if (r < 0) |
1445 | return r; | |
1446 | } | |
1447 | ||
cfcd4318 | 1448 | unit_add_to_load_queue(u); |
03b8cfed FB |
1449 | flags->is_mounted = true; |
1450 | flags->just_mounted = true; | |
1451 | flags->just_changed = true; | |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | static int mount_setup_existing_unit( | |
1457 | Unit *u, | |
1458 | const char *what, | |
1459 | const char *where, | |
1460 | const char *options, | |
1461 | const char *fstype, | |
1462 | MountSetupFlags *flags) { | |
1463 | ||
1464 | MountParameters *p; | |
1465 | bool load_extras = false; | |
1466 | int r1, r2, r3; | |
1467 | ||
1468 | assert(u); | |
1469 | assert(flags); | |
1470 | ||
1471 | if (!MOUNT(u)->where) { | |
1472 | MOUNT(u)->where = strdup(where); | |
1473 | if (!MOUNT(u)->where) | |
1474 | return -ENOMEM; | |
1475 | } | |
1476 | ||
1477 | /* Make sure to initialize those fields before mount_is_extrinsic(). */ | |
1478 | p = &MOUNT(u)->parameters_proc_self_mountinfo; | |
1479 | ||
1480 | r1 = free_and_strdup(&p->what, what); | |
1481 | r2 = free_and_strdup(&p->options, options); | |
1482 | r3 = free_and_strdup(&p->fstype, fstype); | |
1483 | if (r1 < 0 || r2 < 0 || r3 < 0) | |
1484 | return -ENOMEM; | |
1485 | ||
1486 | flags->just_changed = r1 > 0 || r2 > 0 || r3 > 0; | |
1487 | flags->is_mounted = true; | |
65d36b49 | 1488 | flags->just_mounted = !MOUNT(u)->from_proc_self_mountinfo || MOUNT(u)->just_mounted; |
03b8cfed FB |
1489 | |
1490 | MOUNT(u)->from_proc_self_mountinfo = true; | |
1491 | ||
1492 | if (!mount_is_extrinsic(MOUNT(u)) && mount_is_network(p)) { | |
1493 | /* _netdev option may have shown up late, or on a | |
1494 | * remount. Add remote-fs dependencies, even though | |
1495 | * local-fs ones may already be there. | |
1496 | * | |
1497 | * Note: due to a current limitation (we don't track | |
1498 | * in the dependency "Set*" objects who created a | |
1499 | * dependency), we can only add deps, never lose them, | |
1500 | * until the next full daemon-reload. */ | |
35d8c19a | 1501 | unit_add_dependency_by_name(u, UNIT_BEFORE, SPECIAL_REMOTE_FS_TARGET, true, UNIT_DEPENDENCY_MOUNTINFO_IMPLICIT); |
03b8cfed FB |
1502 | load_extras = true; |
1503 | } | |
1504 | ||
1505 | if (u->load_state == UNIT_NOT_FOUND) { | |
1506 | u->load_state = UNIT_LOADED; | |
1507 | u->load_error = 0; | |
1508 | ||
1509 | /* Load in the extras later on, after we | |
1510 | * finished initialization of the unit */ | |
1511 | ||
1512 | /* FIXME: since we're going to load the unit later on, why setting load_extras=true ? */ | |
1513 | load_extras = true; | |
1514 | flags->just_changed = true; | |
1515 | } | |
1516 | ||
1517 | if (load_extras) | |
1518 | return mount_add_extras(MOUNT(u)); | |
1519 | ||
1520 | return 0; | |
1521 | } | |
1522 | ||
628c89cc | 1523 | static int mount_setup_unit( |
e537352b LP |
1524 | Manager *m, |
1525 | const char *what, | |
1526 | const char *where, | |
1527 | const char *options, | |
1528 | const char *fstype, | |
e537352b | 1529 | bool set_flags) { |
057d9ab8 | 1530 | |
03b8cfed FB |
1531 | _cleanup_free_ char *e = NULL; |
1532 | MountSetupFlags flags; | |
057d9ab8 LP |
1533 | Unit *u; |
1534 | int r; | |
b08d03ff | 1535 | |
f50e0a01 | 1536 | assert(m); |
b08d03ff LP |
1537 | assert(what); |
1538 | assert(where); | |
e537352b LP |
1539 | assert(options); |
1540 | assert(fstype); | |
1541 | ||
e537352b LP |
1542 | /* Ignore API mount points. They should never be referenced in |
1543 | * dependencies ever. */ | |
33ff02c9 | 1544 | if (mount_point_is_api(where) || mount_point_ignore(where)) |
57f2a956 | 1545 | return 0; |
b08d03ff | 1546 | |
8d567588 LP |
1547 | if (streq(fstype, "autofs")) |
1548 | return 0; | |
1549 | ||
4e85aff4 LP |
1550 | /* probably some kind of swap, ignore */ |
1551 | if (!is_path(where)) | |
b08d03ff LP |
1552 | return 0; |
1553 | ||
7410616c LP |
1554 | r = unit_name_from_path(where, ".mount", &e); |
1555 | if (r < 0) | |
1556 | return r; | |
b08d03ff | 1557 | |
7d17cfbc MS |
1558 | u = manager_get_unit(m, e); |
1559 | if (!u) { | |
03b8cfed FB |
1560 | /* First time we see this mount point meaning that it's |
1561 | * not been initiated by a mount unit but rather by the | |
1562 | * sysadmin having called mount(8) directly. */ | |
a581e45a | 1563 | r = unit_new_for_name(m, sizeof(Mount), e, &u); |
b08d03ff LP |
1564 | if (r < 0) |
1565 | goto fail; | |
1566 | ||
03b8cfed FB |
1567 | r = mount_setup_new_unit(u, what, where, options, fstype, &flags); |
1568 | if (r < 0) | |
1569 | unit_free(u); | |
1570 | } else | |
1571 | r = mount_setup_existing_unit(u, what, where, options, fstype, &flags); | |
b08d03ff | 1572 | |
03b8cfed | 1573 | if (r < 0) |
e537352b | 1574 | goto fail; |
ff5f34d0 | 1575 | |
6b1dc2bd | 1576 | if (set_flags) { |
03b8cfed FB |
1577 | MOUNT(u)->is_mounted = flags.is_mounted; |
1578 | MOUNT(u)->just_mounted = flags.just_mounted; | |
1579 | MOUNT(u)->just_changed = flags.just_changed; | |
b87705cd LP |
1580 | } |
1581 | ||
03b8cfed | 1582 | if (flags.just_changed) |
ff5f34d0 | 1583 | unit_add_to_dbus_queue(u); |
c1e1601e | 1584 | |
b08d03ff | 1585 | return 0; |
b08d03ff | 1586 | fail: |
fc95c359 | 1587 | return log_warning_errno(r, "Failed to set up mount unit: %m"); |
b08d03ff LP |
1588 | } |
1589 | ||
ef734fd6 | 1590 | static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { |
628c89cc LP |
1591 | _cleanup_(mnt_free_tablep) struct libmnt_table *t = NULL; |
1592 | _cleanup_(mnt_free_iterp) struct libmnt_iter *i = NULL; | |
60b912f6 | 1593 | int r = 0; |
b08d03ff LP |
1594 | |
1595 | assert(m); | |
1596 | ||
628c89cc | 1597 | t = mnt_new_table(); |
628c89cc | 1598 | i = mnt_new_iter(MNT_ITER_FORWARD); |
95b862b0 | 1599 | if (!t || !i) |
628c89cc LP |
1600 | return log_oom(); |
1601 | ||
1602 | r = mnt_table_parse_mtab(t, NULL); | |
5cca8def | 1603 | if (r < 0) |
628c89cc | 1604 | return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m"); |
e537352b | 1605 | |
5cca8def ZJS |
1606 | r = 0; |
1607 | for (;;) { | |
95b862b0 | 1608 | struct libmnt_fs *fs; |
8d3ae2bd | 1609 | const char *device, *path, *options, *fstype; |
527b7a42 | 1610 | _cleanup_free_ char *d = NULL, *p = NULL; |
8d3ae2bd | 1611 | int k; |
b08d03ff | 1612 | |
628c89cc | 1613 | k = mnt_table_next_fs(t, i, &fs); |
5cca8def ZJS |
1614 | if (k == 1) |
1615 | break; | |
628c89cc LP |
1616 | if (k < 0) |
1617 | return log_error_errno(k, "Failed to get next entry from /proc/self/mountinfo: %m"); | |
5cca8def | 1618 | |
8d3ae2bd CL |
1619 | device = mnt_fs_get_source(fs); |
1620 | path = mnt_fs_get_target(fs); | |
1621 | options = mnt_fs_get_options(fs); | |
1622 | fstype = mnt_fs_get_fstype(fs); | |
a2e0f3d3 | 1623 | |
c0a7f8d3 DM |
1624 | if (!device || !path) |
1625 | continue; | |
1626 | ||
527b7a42 | 1627 | if (cunescape(device, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1628 | return log_oom(); |
1629 | ||
527b7a42 | 1630 | if (cunescape(path, UNESCAPE_RELAX, &p) < 0) |
a57f7e2c | 1631 | return log_oom(); |
b08d03ff | 1632 | |
485ae697 | 1633 | device_found_node(m, d, DEVICE_FOUND_MOUNT, DEVICE_FOUND_MOUNT); |
628c89cc LP |
1634 | |
1635 | k = mount_setup_unit(m, d, p, options, fstype, set_flags); | |
5cca8def | 1636 | if (r == 0 && k < 0) |
60b912f6 | 1637 | r = k; |
b08d03ff LP |
1638 | } |
1639 | ||
e537352b LP |
1640 | return r; |
1641 | } | |
1642 | ||
1643 | static void mount_shutdown(Manager *m) { | |
1644 | assert(m); | |
1645 | ||
718db961 LP |
1646 | m->mount_event_source = sd_event_source_unref(m->mount_event_source); |
1647 | ||
d379d442 KZ |
1648 | mnt_unref_monitor(m->mount_monitor); |
1649 | m->mount_monitor = NULL; | |
b08d03ff LP |
1650 | } |
1651 | ||
7a7821c8 | 1652 | static int mount_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1653 | Mount *m = MOUNT(u); |
7a7821c8 | 1654 | usec_t t; |
68db7a3b ZJS |
1655 | int r; |
1656 | ||
1657 | if (!m->timer_event_source) | |
1658 | return 0; | |
1659 | ||
7a7821c8 | 1660 | r = sd_event_source_get_time(m->timer_event_source, &t); |
68db7a3b ZJS |
1661 | if (r < 0) |
1662 | return r; | |
7a7821c8 LP |
1663 | if (t == USEC_INFINITY) |
1664 | return 0; | |
68db7a3b | 1665 | |
7a7821c8 | 1666 | *timeout = t; |
68db7a3b ZJS |
1667 | return 1; |
1668 | } | |
1669 | ||
04eb582a | 1670 | static void mount_enumerate_perpetual(Manager *m) { |
11222d0f LP |
1671 | Unit *u; |
1672 | int r; | |
1673 | ||
1674 | assert(m); | |
1675 | ||
1676 | /* Whatever happens, we know for sure that the root directory is around, and cannot go away. Let's | |
1677 | * unconditionally synthesize it here and mark it as perpetual. */ | |
1678 | ||
1679 | u = manager_get_unit(m, SPECIAL_ROOT_MOUNT); | |
1680 | if (!u) { | |
a581e45a | 1681 | r = unit_new_for_name(m, sizeof(Mount), SPECIAL_ROOT_MOUNT, &u); |
04eb582a LP |
1682 | if (r < 0) { |
1683 | log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_MOUNT " unit: %m"); | |
1684 | return; | |
1685 | } | |
11222d0f LP |
1686 | } |
1687 | ||
1688 | u->perpetual = true; | |
1689 | MOUNT(u)->deserialized_state = MOUNT_MOUNTED; | |
1690 | ||
1691 | unit_add_to_load_queue(u); | |
1692 | unit_add_to_dbus_queue(u); | |
1693 | } | |
1694 | ||
1695 | static bool mount_is_mounted(Mount *m) { | |
1696 | assert(m); | |
1697 | ||
1698 | return UNIT(m)->perpetual || m->is_mounted; | |
1699 | } | |
1700 | ||
ba64af90 | 1701 | static void mount_enumerate(Manager *m) { |
b08d03ff | 1702 | int r; |
d379d442 | 1703 | |
b08d03ff LP |
1704 | assert(m); |
1705 | ||
8d3ae2bd CL |
1706 | mnt_init_debug(0); |
1707 | ||
d379d442 KZ |
1708 | if (!m->mount_monitor) { |
1709 | int fd; | |
ef734fd6 | 1710 | |
d379d442 KZ |
1711 | m->mount_monitor = mnt_new_monitor(); |
1712 | if (!m->mount_monitor) { | |
ba64af90 | 1713 | log_oom(); |
718db961 | 1714 | goto fail; |
d379d442 | 1715 | } |
29083707 | 1716 | |
d379d442 | 1717 | r = mnt_monitor_enable_kernel(m->mount_monitor, 1); |
ba64af90 LP |
1718 | if (r < 0) { |
1719 | log_error_errno(r, "Failed to enable watching of kernel mount events: %m"); | |
29083707 | 1720 | goto fail; |
ba64af90 LP |
1721 | } |
1722 | ||
d379d442 | 1723 | r = mnt_monitor_enable_userspace(m->mount_monitor, 1, NULL); |
ba64af90 LP |
1724 | if (r < 0) { |
1725 | log_error_errno(r, "Failed to enable watching of userspace mount events: %m"); | |
f7c1ad4f | 1726 | goto fail; |
ba64af90 | 1727 | } |
90598531 | 1728 | |
d379d442 KZ |
1729 | /* mnt_unref_monitor() will close the fd */ |
1730 | fd = r = mnt_monitor_get_fd(m->mount_monitor); | |
ba64af90 LP |
1731 | if (r < 0) { |
1732 | log_error_errno(r, "Failed to acquire watch file descriptor: %m"); | |
f7c1ad4f | 1733 | goto fail; |
ba64af90 | 1734 | } |
befb6d54 | 1735 | |
d379d442 | 1736 | r = sd_event_add_io(m->event, &m->mount_event_source, fd, EPOLLIN, mount_dispatch_io, m); |
ba64af90 LP |
1737 | if (r < 0) { |
1738 | log_error_errno(r, "Failed to watch mount file descriptor: %m"); | |
befb6d54 | 1739 | goto fail; |
ba64af90 | 1740 | } |
befb6d54 | 1741 | |
83231637 | 1742 | r = sd_event_source_set_priority(m->mount_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1743 | if (r < 0) { |
1744 | log_error_errno(r, "Failed to adjust mount watch priority: %m"); | |
befb6d54 | 1745 | goto fail; |
ba64af90 | 1746 | } |
7dfbe2e3 | 1747 | |
d379d442 | 1748 | (void) sd_event_source_set_description(m->mount_event_source, "mount-monitor-dispatch"); |
befb6d54 CL |
1749 | } |
1750 | ||
e62d8c39 ZJS |
1751 | r = mount_load_proc_self_mountinfo(m, false); |
1752 | if (r < 0) | |
b08d03ff LP |
1753 | goto fail; |
1754 | ||
ba64af90 | 1755 | return; |
b08d03ff LP |
1756 | |
1757 | fail: | |
1758 | mount_shutdown(m); | |
5cb5a6ff LP |
1759 | } |
1760 | ||
718db961 | 1761 | static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
fcd8b266 | 1762 | _cleanup_set_free_ Set *around = NULL, *gone = NULL; |
718db961 | 1763 | Manager *m = userdata; |
fcd8b266 LP |
1764 | const char *what; |
1765 | Iterator i; | |
595ed347 | 1766 | Unit *u; |
ef734fd6 LP |
1767 | int r; |
1768 | ||
1769 | assert(m); | |
d379d442 | 1770 | assert(revents & EPOLLIN); |
ef734fd6 | 1771 | |
d379d442 | 1772 | if (fd == mnt_monitor_get_fd(m->mount_monitor)) { |
df63dda6 | 1773 | bool rescan = false; |
befb6d54 | 1774 | |
d379d442 KZ |
1775 | /* Drain all events and verify that the event is valid. |
1776 | * | |
1777 | * Note that libmount also monitors /run/mount mkdir if the | |
1778 | * directory does not exist yet. The mkdir may generate event | |
1779 | * which is irrelevant for us. | |
1780 | * | |
1781 | * error: r < 0; valid: r == 0, false positive: rc == 1 */ | |
1782 | do { | |
1783 | r = mnt_monitor_next_change(m->mount_monitor, NULL, NULL); | |
1784 | if (r == 0) | |
1785 | rescan = true; | |
1786 | else if (r < 0) | |
5e1ee764 | 1787 | return log_error_errno(r, "Failed to drain libmount events: %m"); |
d379d442 KZ |
1788 | } while (r == 0); |
1789 | ||
1790 | log_debug("libmount event [rescan: %s]", yes_no(rescan)); | |
befb6d54 CL |
1791 | if (!rescan) |
1792 | return 0; | |
1793 | } | |
ef734fd6 | 1794 | |
4f0eedb7 ZJS |
1795 | r = mount_load_proc_self_mountinfo(m, true); |
1796 | if (r < 0) { | |
e537352b | 1797 | /* Reset flags, just in case, for later calls */ |
595ed347 MS |
1798 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1799 | Mount *mount = MOUNT(u); | |
e537352b LP |
1800 | |
1801 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1802 | } | |
1803 | ||
718db961 | 1804 | return 0; |
ef734fd6 LP |
1805 | } |
1806 | ||
1807 | manager_dispatch_load_queue(m); | |
1808 | ||
595ed347 MS |
1809 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) { |
1810 | Mount *mount = MOUNT(u); | |
ef734fd6 | 1811 | |
11222d0f | 1812 | if (!mount_is_mounted(mount)) { |
e537352b | 1813 | |
394763f6 LP |
1814 | /* A mount point is not around right now. It |
1815 | * might be gone, or might never have | |
1816 | * existed. */ | |
1817 | ||
1818 | if (mount->from_proc_self_mountinfo && | |
1819 | mount->parameters_proc_self_mountinfo.what) { | |
1820 | ||
1821 | /* Remember that this device might just have disappeared */ | |
548f6937 | 1822 | if (set_ensure_allocated(&gone, &path_hash_ops) < 0 || |
394763f6 LP |
1823 | set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0) |
1824 | log_oom(); /* we don't care too much about OOM here... */ | |
1825 | } | |
fcd8b266 | 1826 | |
ef734fd6 | 1827 | mount->from_proc_self_mountinfo = false; |
e537352b LP |
1828 | |
1829 | switch (mount->state) { | |
1830 | ||
1831 | case MOUNT_MOUNTED: | |
aef83136 LP |
1832 | /* This has just been unmounted by |
1833 | * somebody else, follow the state | |
1834 | * change. */ | |
cf6f7f66 | 1835 | mount->result = MOUNT_SUCCESS; /* make sure we forget any earlier umount failures */ |
9d2f5178 | 1836 | mount_enter_dead(mount, MOUNT_SUCCESS); |
e537352b LP |
1837 | break; |
1838 | ||
1839 | default: | |
e537352b | 1840 | break; |
e537352b LP |
1841 | } |
1842 | ||
1843 | } else if (mount->just_mounted || mount->just_changed) { | |
1844 | ||
fcd8b266 | 1845 | /* A mount point was added or changed */ |
e537352b LP |
1846 | |
1847 | switch (mount->state) { | |
1848 | ||
1849 | case MOUNT_DEAD: | |
fdf20a31 | 1850 | case MOUNT_FAILED: |
4b58153d LP |
1851 | |
1852 | /* This has just been mounted by somebody else, follow the state change, but let's | |
1853 | * generate a new invocation ID for this implicitly and automatically. */ | |
1854 | (void) unit_acquire_invocation_id(UNIT(mount)); | |
9d2f5178 | 1855 | mount_enter_mounted(mount, MOUNT_SUCCESS); |
e537352b LP |
1856 | break; |
1857 | ||
1858 | case MOUNT_MOUNTING: | |
5bcb0f2b | 1859 | mount_set_state(mount, MOUNT_MOUNTING_DONE); |
e537352b LP |
1860 | break; |
1861 | ||
1862 | default: | |
1863 | /* Nothing really changed, but let's | |
1864 | * issue an notification call | |
1865 | * nonetheless, in case somebody is | |
1866 | * waiting for this. (e.g. file system | |
1867 | * ro/rw remounts.) */ | |
1868 | mount_set_state(mount, mount->state); | |
1869 | break; | |
1870 | } | |
394763f6 | 1871 | } |
fcd8b266 | 1872 | |
11222d0f | 1873 | if (mount_is_mounted(mount) && |
394763f6 LP |
1874 | mount->from_proc_self_mountinfo && |
1875 | mount->parameters_proc_self_mountinfo.what) { | |
fcd8b266 | 1876 | |
548f6937 | 1877 | if (set_ensure_allocated(&around, &path_hash_ops) < 0 || |
394763f6 LP |
1878 | set_put(around, mount->parameters_proc_self_mountinfo.what) < 0) |
1879 | log_oom(); | |
e537352b LP |
1880 | } |
1881 | ||
1882 | /* Reset the flags for later calls */ | |
1883 | mount->is_mounted = mount->just_mounted = mount->just_changed = false; | |
1884 | } | |
718db961 | 1885 | |
fcd8b266 LP |
1886 | SET_FOREACH(what, gone, i) { |
1887 | if (set_contains(around, what)) | |
1888 | continue; | |
1889 | ||
1890 | /* Let the device units know that the device is no longer mounted */ | |
485ae697 | 1891 | device_found_node(m, what, 0, DEVICE_FOUND_MOUNT); |
fcd8b266 LP |
1892 | } |
1893 | ||
718db961 | 1894 | return 0; |
e537352b LP |
1895 | } |
1896 | ||
fdf20a31 | 1897 | static void mount_reset_failed(Unit *u) { |
5632e374 LP |
1898 | Mount *m = MOUNT(u); |
1899 | ||
1900 | assert(m); | |
1901 | ||
fdf20a31 | 1902 | if (m->state == MOUNT_FAILED) |
5632e374 LP |
1903 | mount_set_state(m, MOUNT_DEAD); |
1904 | ||
9d2f5178 LP |
1905 | m->result = MOUNT_SUCCESS; |
1906 | m->reload_result = MOUNT_SUCCESS; | |
5632e374 LP |
1907 | } |
1908 | ||
718db961 | 1909 | static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
22af0e58 LP |
1910 | Mount *m = MOUNT(u); |
1911 | ||
1912 | assert(m); | |
1913 | ||
814cc562 | 1914 | return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error); |
8a0867d6 LP |
1915 | } |
1916 | ||
291d565a LP |
1917 | static int mount_control_pid(Unit *u) { |
1918 | Mount *m = MOUNT(u); | |
1919 | ||
1920 | assert(m); | |
1921 | ||
1922 | return m->control_pid; | |
1923 | } | |
1924 | ||
a16e1123 LP |
1925 | static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = { |
1926 | [MOUNT_EXEC_MOUNT] = "ExecMount", | |
1927 | [MOUNT_EXEC_UNMOUNT] = "ExecUnmount", | |
1928 | [MOUNT_EXEC_REMOUNT] = "ExecRemount", | |
1929 | }; | |
1930 | ||
1931 | DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand); | |
1932 | ||
9d2f5178 LP |
1933 | static const char* const mount_result_table[_MOUNT_RESULT_MAX] = { |
1934 | [MOUNT_SUCCESS] = "success", | |
1935 | [MOUNT_FAILURE_RESOURCES] = "resources", | |
1936 | [MOUNT_FAILURE_TIMEOUT] = "timeout", | |
1937 | [MOUNT_FAILURE_EXIT_CODE] = "exit-code", | |
1938 | [MOUNT_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1939 | [MOUNT_FAILURE_CORE_DUMP] = "core-dump", |
1940 | [MOUNT_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
006aabbd | 1941 | [MOUNT_FAILURE_PROTOCOL] = "protocol", |
9d2f5178 LP |
1942 | }; |
1943 | ||
1944 | DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult); | |
1945 | ||
87f0e418 | 1946 | const UnitVTable mount_vtable = { |
7d17cfbc | 1947 | .object_size = sizeof(Mount), |
718db961 LP |
1948 | .exec_context_offset = offsetof(Mount, exec_context), |
1949 | .cgroup_context_offset = offsetof(Mount, cgroup_context), | |
1950 | .kill_context_offset = offsetof(Mount, kill_context), | |
613b411c | 1951 | .exec_runtime_offset = offsetof(Mount, exec_runtime), |
29206d46 | 1952 | .dynamic_creds_offset = offsetof(Mount, dynamic_creds), |
3ef63c31 | 1953 | |
f975e971 LP |
1954 | .sections = |
1955 | "Unit\0" | |
1956 | "Mount\0" | |
1957 | "Install\0", | |
4ad49000 | 1958 | .private_section = "Mount", |
71645aca | 1959 | |
e537352b LP |
1960 | .init = mount_init, |
1961 | .load = mount_load, | |
034c6ed7 | 1962 | .done = mount_done, |
e537352b | 1963 | |
f50e0a01 LP |
1964 | .coldplug = mount_coldplug, |
1965 | ||
034c6ed7 | 1966 | .dump = mount_dump, |
5cb5a6ff | 1967 | |
e537352b LP |
1968 | .start = mount_start, |
1969 | .stop = mount_stop, | |
1970 | .reload = mount_reload, | |
1971 | ||
8a0867d6 LP |
1972 | .kill = mount_kill, |
1973 | ||
a16e1123 LP |
1974 | .serialize = mount_serialize, |
1975 | .deserialize_item = mount_deserialize_item, | |
1976 | ||
f50e0a01 | 1977 | .active_state = mount_active_state, |
10a94420 | 1978 | .sub_state_to_string = mount_sub_state_to_string, |
b08d03ff | 1979 | |
f2f725e5 | 1980 | .may_gc = mount_may_gc, |
701cc384 | 1981 | |
e537352b | 1982 | .sigchld_event = mount_sigchld_event, |
e537352b | 1983 | |
fdf20a31 | 1984 | .reset_failed = mount_reset_failed, |
291d565a LP |
1985 | |
1986 | .control_pid = mount_control_pid, | |
5632e374 | 1987 | |
718db961 | 1988 | .bus_vtable = bus_mount_vtable, |
74c964d3 LP |
1989 | .bus_set_property = bus_mount_set_property, |
1990 | .bus_commit_properties = bus_mount_commit_properties, | |
4139c1b2 | 1991 | |
68db7a3b ZJS |
1992 | .get_timeout = mount_get_timeout, |
1993 | ||
0e252f6b TG |
1994 | .can_transient = true, |
1995 | ||
04eb582a | 1996 | .enumerate_perpetual = mount_enumerate_perpetual, |
f50e0a01 | 1997 | .enumerate = mount_enumerate, |
c6918296 MS |
1998 | .shutdown = mount_shutdown, |
1999 | ||
2000 | .status_message_formats = { | |
2001 | .starting_stopping = { | |
2002 | [0] = "Mounting %s...", | |
2003 | [1] = "Unmounting %s...", | |
2004 | }, | |
2005 | .finished_start_job = { | |
2006 | [JOB_DONE] = "Mounted %s.", | |
2007 | [JOB_FAILED] = "Failed to mount %s.", | |
c6918296 MS |
2008 | [JOB_TIMEOUT] = "Timed out mounting %s.", |
2009 | }, | |
2010 | .finished_stop_job = { | |
2011 | [JOB_DONE] = "Unmounted %s.", | |
2012 | [JOB_FAILED] = "Failed unmounting %s.", | |
2013 | [JOB_TIMEOUT] = "Timed out unmounting %s.", | |
2014 | }, | |
2015 | }, | |
5cb5a6ff | 2016 | }; |