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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <errno.h> |
8d567588 | 23 | #include <fcntl.h> |
07630cea LP |
24 | #include <limits.h> |
25 | #include <linux/auto_dev-ioctl.h> | |
26 | #include <linux/auto_fs4.h> | |
8d567588 | 27 | #include <sys/epoll.h> |
07630cea | 28 | #include <sys/mount.h> |
8d567588 | 29 | #include <sys/stat.h> |
07630cea | 30 | #include <unistd.h> |
5cb5a6ff | 31 | |
07630cea LP |
32 | #include "async.h" |
33 | #include "bus-error.h" | |
34 | #include "bus-util.h" | |
35 | #include "dbus-automount.h" | |
36 | #include "formats-util.h" | |
e51bc1a2 | 37 | #include "label.h" |
49e942b2 | 38 | #include "mkdir.h" |
07630cea | 39 | #include "mount.h" |
9eb977db | 40 | #include "path-util.h" |
0b452006 | 41 | #include "process-util.h" |
07630cea LP |
42 | #include "special.h" |
43 | #include "string-util.h" | |
44 | #include "unit-name.h" | |
45 | #include "unit.h" | |
46 | #include "automount.h" | |
5cb5a6ff | 47 | |
e537352b LP |
48 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
49 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
50 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
51 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
74ac3cbd | 52 | [AUTOMOUNT_FAILED] = UNIT_FAILED |
e537352b | 53 | }; |
5cb5a6ff | 54 | |
deb0a77c MO |
55 | struct expire_data { |
56 | int dev_autofs_fd; | |
57 | int ioctl_fd; | |
58 | }; | |
59 | ||
60 | static inline void expire_data_free(struct expire_data *data) { | |
61 | if (!data) | |
62 | return; | |
63 | ||
64 | safe_close(data->dev_autofs_fd); | |
65 | safe_close(data->ioctl_fd); | |
66 | free(data); | |
67 | } | |
68 | ||
69 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct expire_data*, expire_data_free); | |
70 | ||
a16e1123 | 71 | static int open_dev_autofs(Manager *m); |
718db961 | 72 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata); |
8d567588 | 73 | |
e537352b LP |
74 | static void automount_init(Unit *u) { |
75 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 76 | |
8d567588 | 77 | assert(u); |
ac155bb8 | 78 | assert(u->load_state == UNIT_STUB); |
8d567588 | 79 | |
718db961 | 80 | a->pipe_fd = -1; |
1cf18f27 | 81 | a->directory_mode = 0755; |
1124fe6f | 82 | UNIT(a)->ignore_on_isolate = true; |
8d567588 LP |
83 | } |
84 | ||
a5e41bdb | 85 | static void repeat_unmount(const char *path) { |
8d567588 LP |
86 | assert(path); |
87 | ||
88 | for (;;) { | |
1b560190 LP |
89 | /* If there are multiple mounts on a mount point, this |
90 | * removes them all */ | |
8d567588 LP |
91 | |
92 | if (umount2(path, MNT_DETACH) >= 0) | |
93 | continue; | |
94 | ||
95 | if (errno != EINVAL) | |
56f64d95 | 96 | log_error_errno(errno, "Failed to unmount: %m"); |
8d567588 LP |
97 | |
98 | break; | |
99 | } | |
100 | } | |
101 | ||
deb0a77c MO |
102 | static int automount_send_ready(Automount *a, Set *tokens, int status); |
103 | ||
8d567588 LP |
104 | static void unmount_autofs(Automount *a) { |
105 | assert(a); | |
106 | ||
107 | if (a->pipe_fd < 0) | |
108 | return; | |
109 | ||
deb0a77c MO |
110 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
111 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
8d567588 | 112 | |
718db961 | 113 | a->pipe_event_source = sd_event_source_unref(a->pipe_event_source); |
03e334a1 | 114 | a->pipe_fd = safe_close(a->pipe_fd); |
8d567588 | 115 | |
a16e1123 LP |
116 | /* If we reload/reexecute things we keep the mount point |
117 | * around */ | |
118 | if (a->where && | |
1124fe6f MS |
119 | (UNIT(a)->manager->exit_code != MANAGER_RELOAD && |
120 | UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) | |
a5e41bdb | 121 | repeat_unmount(a->where); |
8d567588 LP |
122 | } |
123 | ||
124 | static void automount_done(Unit *u) { | |
125 | Automount *a = AUTOMOUNT(u); | |
126 | ||
127 | assert(a); | |
128 | ||
129 | unmount_autofs(a); | |
8d567588 | 130 | |
a1e58e8e | 131 | a->where = mfree(a->where); |
a16e1123 | 132 | |
525d3cc7 LP |
133 | a->tokens = set_free(a->tokens); |
134 | a->expire_tokens = set_free(a->expire_tokens); | |
deb0a77c MO |
135 | |
136 | a->expire_event_source = sd_event_source_unref(a->expire_event_source); | |
8d567588 LP |
137 | } |
138 | ||
a57f7e2c LP |
139 | static int automount_add_mount_links(Automount *a) { |
140 | _cleanup_free_ char *parent = NULL; | |
6e2ef85b LP |
141 | int r; |
142 | ||
143 | assert(a); | |
1b560190 | 144 | |
a57f7e2c | 145 | r = path_get_parent(a->where, &parent); |
0b2665c3 | 146 | if (r < 0) |
6e2ef85b LP |
147 | return r; |
148 | ||
a57f7e2c | 149 | return unit_require_mounts_for(UNIT(a), parent); |
6e2ef85b LP |
150 | } |
151 | ||
2edd4434 LP |
152 | static int automount_add_default_dependencies(Automount *a) { |
153 | int r; | |
154 | ||
155 | assert(a); | |
156 | ||
b2c23da8 | 157 | if (UNIT(a)->manager->running_as != MANAGER_SYSTEM) |
6b1dc2bd | 158 | return 0; |
2a77d31d | 159 | |
6b1dc2bd LP |
160 | r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
161 | if (r < 0) | |
162 | return r; | |
2edd4434 LP |
163 | |
164 | return 0; | |
165 | } | |
166 | ||
8d567588 | 167 | static int automount_verify(Automount *a) { |
e1d75803 | 168 | _cleanup_free_ char *e = NULL; |
7410616c LP |
169 | int r; |
170 | ||
8d567588 LP |
171 | assert(a); |
172 | ||
1124fe6f | 173 | if (UNIT(a)->load_state != UNIT_LOADED) |
8d567588 LP |
174 | return 0; |
175 | ||
41e45059 | 176 | if (path_equal(a->where, "/")) { |
f2341e0a | 177 | log_unit_error(UNIT(a), "Cannot have an automount unit for the root directory. Refusing."); |
41e45059 LP |
178 | return -EINVAL; |
179 | } | |
180 | ||
7410616c LP |
181 | r = unit_name_from_path(a->where, ".automount", &e); |
182 | if (r < 0) | |
f2341e0a | 183 | return log_unit_error(UNIT(a), "Failed to generate unit name from path: %m"); |
8d567588 | 184 | |
7410616c | 185 | if (!unit_has_name(UNIT(a), e)) { |
f2341e0a | 186 | log_unit_error(UNIT(a), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
187 | return -EINVAL; |
188 | } | |
189 | ||
190 | return 0; | |
e537352b | 191 | } |
5cb5a6ff | 192 | |
e537352b | 193 | static int automount_load(Unit *u) { |
e537352b | 194 | Automount *a = AUTOMOUNT(u); |
3ecaa09b | 195 | int r; |
23a177ef | 196 | |
e537352b | 197 | assert(u); |
ac155bb8 | 198 | assert(u->load_state == UNIT_STUB); |
5cb5a6ff | 199 | |
e537352b | 200 | /* Load a .automount file */ |
0b2665c3 LP |
201 | r = unit_load_fragment_and_dropin_optional(u); |
202 | if (r < 0) | |
e537352b | 203 | return r; |
23a177ef | 204 | |
ac155bb8 | 205 | if (u->load_state == UNIT_LOADED) { |
57020a3a | 206 | Unit *x; |
23a177ef | 207 | |
0b2665c3 | 208 | if (!a->where) { |
7410616c LP |
209 | r = unit_name_to_path(u->id, &a->where); |
210 | if (r < 0) | |
211 | return r; | |
0b2665c3 | 212 | } |
a16e1123 LP |
213 | |
214 | path_kill_slashes(a->where); | |
215 | ||
3ecaa09b | 216 | r = unit_load_related_unit(u, ".mount", &x); |
0b2665c3 | 217 | if (r < 0) |
6e2ef85b LP |
218 | return r; |
219 | ||
3ecaa09b | 220 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
57020a3a | 221 | if (r < 0) |
23a177ef LP |
222 | return r; |
223 | ||
3ecaa09b | 224 | r = automount_add_mount_links(a); |
57020a3a | 225 | if (r < 0) |
23a177ef | 226 | return r; |
4e67ddd6 | 227 | |
0b2665c3 LP |
228 | if (UNIT(a)->default_dependencies) { |
229 | r = automount_add_default_dependencies(a); | |
230 | if (r < 0) | |
4e67ddd6 | 231 | return r; |
0b2665c3 | 232 | } |
23a177ef LP |
233 | } |
234 | ||
8d567588 | 235 | return automount_verify(a); |
5cb5a6ff LP |
236 | } |
237 | ||
8d567588 LP |
238 | static void automount_set_state(Automount *a, AutomountState state) { |
239 | AutomountState old_state; | |
e537352b | 240 | assert(a); |
034c6ed7 | 241 | |
8d567588 LP |
242 | old_state = a->state; |
243 | a->state = state; | |
244 | ||
245 | if (state != AUTOMOUNT_WAITING && | |
246 | state != AUTOMOUNT_RUNNING) | |
247 | unmount_autofs(a); | |
248 | ||
249 | if (state != old_state) | |
f2341e0a | 250 | log_unit_debug(UNIT(a), "Changed %s -> %s", automount_state_to_string(old_state), automount_state_to_string(state)); |
8d567588 | 251 | |
e2f3b44c | 252 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
253 | } |
254 | ||
be847e82 | 255 | static int automount_coldplug(Unit *u) { |
a16e1123 LP |
256 | Automount *a = AUTOMOUNT(u); |
257 | int r; | |
258 | ||
259 | assert(a); | |
260 | assert(a->state == AUTOMOUNT_DEAD); | |
261 | ||
262 | if (a->deserialized_state != a->state) { | |
263 | ||
0b2665c3 LP |
264 | r = open_dev_autofs(u->manager); |
265 | if (r < 0) | |
a16e1123 LP |
266 | return r; |
267 | ||
268 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
269 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
a16e1123 LP |
270 | assert(a->pipe_fd >= 0); |
271 | ||
151b9b96 | 272 | r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u); |
0b2665c3 | 273 | if (r < 0) |
a16e1123 | 274 | return r; |
7dfbe2e3 TG |
275 | |
276 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); | |
a16e1123 LP |
277 | } |
278 | ||
279 | automount_set_state(a, a->deserialized_state); | |
280 | } | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
87f0e418 | 285 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
deb0a77c | 286 | char time_string[FORMAT_TIMESPAN_MAX]; |
a16e1123 | 287 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 288 | |
a16e1123 | 289 | assert(a); |
5cb5a6ff LP |
290 | |
291 | fprintf(f, | |
a16e1123 | 292 | "%sAutomount State: %s\n" |
81a5c6d0 | 293 | "%sResult: %s\n" |
1cf18f27 | 294 | "%sWhere: %s\n" |
deb0a77c MO |
295 | "%sDirectoryMode: %04o\n" |
296 | "%sTimeoutIdleUSec: %s\n", | |
a16e1123 | 297 | prefix, automount_state_to_string(a->state), |
81a5c6d0 | 298 | prefix, automount_result_to_string(a->result), |
1cf18f27 | 299 | prefix, a->where, |
deb0a77c MO |
300 | prefix, a->directory_mode, |
301 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, a->timeout_idle_usec, USEC_PER_SEC)); | |
5cb5a6ff LP |
302 | } |
303 | ||
81a5c6d0 | 304 | static void automount_enter_dead(Automount *a, AutomountResult f) { |
8d567588 LP |
305 | assert(a); |
306 | ||
81a5c6d0 LP |
307 | if (f != AUTOMOUNT_SUCCESS) |
308 | a->result = f; | |
8d567588 | 309 | |
81a5c6d0 | 310 | automount_set_state(a, a->result != AUTOMOUNT_SUCCESS ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD); |
8d567588 LP |
311 | } |
312 | ||
313 | static int open_dev_autofs(Manager *m) { | |
314 | struct autofs_dev_ioctl param; | |
315 | ||
316 | assert(m); | |
317 | ||
318 | if (m->dev_autofs_fd >= 0) | |
319 | return m->dev_autofs_fd; | |
320 | ||
c9bc0764 | 321 | label_fix("/dev/autofs", false, false); |
56cf987f | 322 | |
0b2665c3 | 323 | m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY); |
4a62c710 MS |
324 | if (m->dev_autofs_fd < 0) |
325 | return log_error_errno(errno, "Failed to open /dev/autofs: %m"); | |
8d567588 LP |
326 | |
327 | init_autofs_dev_ioctl(¶m); | |
328 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
03e334a1 | 329 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
330 | return -errno; |
331 | } | |
332 | ||
333 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
334 | ||
335 | return m->dev_autofs_fd; | |
336 | } | |
337 | ||
338 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
339 | struct autofs_dev_ioctl *param; | |
340 | size_t l; | |
8d567588 LP |
341 | |
342 | assert(dev_autofs_fd >= 0); | |
343 | assert(where); | |
344 | ||
345 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
0b2665c3 | 346 | param = alloca(l); |
8d567588 LP |
347 | |
348 | init_autofs_dev_ioctl(param); | |
349 | param->size = l; | |
350 | param->ioctlfd = -1; | |
351 | param->openmount.devid = devid; | |
352 | strcpy(param->path, where); | |
353 | ||
0b2665c3 LP |
354 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) |
355 | return -errno; | |
8d567588 | 356 | |
0b2665c3 LP |
357 | if (param->ioctlfd < 0) |
358 | return -EIO; | |
8d567588 | 359 | |
f34beace | 360 | (void) fd_cloexec(param->ioctlfd, true); |
0b2665c3 | 361 | return param->ioctlfd; |
8d567588 LP |
362 | } |
363 | ||
364 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
365 | uint32_t major, minor; | |
366 | struct autofs_dev_ioctl param; | |
367 | ||
368 | assert(dev_autofs_fd >= 0); | |
369 | assert(ioctl_fd >= 0); | |
370 | ||
371 | init_autofs_dev_ioctl(¶m); | |
372 | param.ioctlfd = ioctl_fd; | |
373 | ||
374 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
375 | return -errno; | |
376 | ||
377 | major = param.protover.version; | |
378 | ||
379 | init_autofs_dev_ioctl(¶m); | |
380 | param.ioctlfd = ioctl_fd; | |
381 | ||
382 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
383 | return -errno; | |
384 | ||
385 | minor = param.protosubver.sub_version; | |
386 | ||
387 | log_debug("Autofs protocol version %i.%i", major, minor); | |
388 | return 0; | |
389 | } | |
390 | ||
deb0a77c | 391 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, usec_t usec) { |
8d567588 LP |
392 | struct autofs_dev_ioctl param; |
393 | ||
394 | assert(dev_autofs_fd >= 0); | |
395 | assert(ioctl_fd >= 0); | |
396 | ||
397 | init_autofs_dev_ioctl(¶m); | |
398 | param.ioctlfd = ioctl_fd; | |
deb0a77c MO |
399 | |
400 | /* Convert to seconds, rounding up. */ | |
401 | param.timeout.timeout = (usec + USEC_PER_SEC - 1) / USEC_PER_SEC; | |
8d567588 LP |
402 | |
403 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
404 | return -errno; | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
410 | struct autofs_dev_ioctl param; | |
411 | ||
412 | assert(dev_autofs_fd >= 0); | |
413 | assert(ioctl_fd >= 0); | |
414 | ||
415 | init_autofs_dev_ioctl(¶m); | |
416 | param.ioctlfd = ioctl_fd; | |
417 | ||
418 | if (status) { | |
419 | param.fail.token = token; | |
420 | param.fail.status = status; | |
421 | } else | |
422 | param.ready.token = token; | |
423 | ||
424 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
425 | return -errno; | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
deb0a77c | 430 | static int automount_send_ready(Automount *a, Set *tokens, int status) { |
03e334a1 | 431 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 432 | unsigned token; |
03e334a1 | 433 | int r; |
8d567588 LP |
434 | |
435 | assert(a); | |
436 | assert(status <= 0); | |
437 | ||
deb0a77c | 438 | if (set_isempty(tokens)) |
8d567588 LP |
439 | return 0; |
440 | ||
0b2665c3 | 441 | ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); |
03e334a1 LP |
442 | if (ioctl_fd < 0) |
443 | return ioctl_fd; | |
8d567588 LP |
444 | |
445 | if (status) | |
f2341e0a | 446 | log_unit_debug_errno(UNIT(a), status, "Sending failure: %m"); |
8d567588 | 447 | else |
f2341e0a | 448 | log_unit_debug(UNIT(a), "Sending success."); |
8d567588 | 449 | |
e364ad06 LP |
450 | r = 0; |
451 | ||
8d567588 | 452 | /* Autofs thankfully does not hand out 0 as a token */ |
deb0a77c | 453 | while ((token = PTR_TO_UINT(set_steal_first(tokens)))) { |
8d567588 LP |
454 | int k; |
455 | ||
456 | /* Autofs fun fact II: | |
457 | * | |
458 | * if you pass a positive status code here, the kernel will | |
459 | * freeze! Yay! */ | |
460 | ||
0b2665c3 LP |
461 | k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd, |
462 | ioctl_fd, | |
463 | token, | |
464 | status); | |
465 | if (k < 0) | |
8d567588 LP |
466 | r = k; |
467 | } | |
468 | ||
8d567588 LP |
469 | return r; |
470 | } | |
471 | ||
3dbadf9e MO |
472 | static int automount_start_expire(Automount *a); |
473 | ||
deb0a77c | 474 | int automount_update_mount(Automount *a, MountState old_state, MountState state) { |
3dbadf9e MO |
475 | int r; |
476 | ||
deb0a77c MO |
477 | assert(a); |
478 | ||
479 | switch (state) { | |
480 | case MOUNT_MOUNTED: | |
481 | case MOUNT_REMOUNTING: | |
482 | automount_send_ready(a, a->tokens, 0); | |
3dbadf9e MO |
483 | r = automount_start_expire(a); |
484 | if (r < 0) | |
485 | log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m"); | |
deb0a77c MO |
486 | break; |
487 | case MOUNT_DEAD: | |
488 | case MOUNT_UNMOUNTING: | |
489 | case MOUNT_MOUNTING_SIGTERM: | |
490 | case MOUNT_MOUNTING_SIGKILL: | |
491 | case MOUNT_REMOUNTING_SIGTERM: | |
492 | case MOUNT_REMOUNTING_SIGKILL: | |
493 | case MOUNT_UNMOUNTING_SIGTERM: | |
494 | case MOUNT_UNMOUNTING_SIGKILL: | |
495 | case MOUNT_FAILED: | |
496 | if (old_state != state) | |
497 | automount_send_ready(a, a->tokens, -ENODEV); | |
3dbadf9e | 498 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); |
deb0a77c MO |
499 | break; |
500 | default: | |
501 | break; | |
502 | } | |
503 | ||
504 | switch (state) { | |
505 | case MOUNT_DEAD: | |
506 | automount_send_ready(a, a->expire_tokens, 0); | |
507 | break; | |
508 | case MOUNT_MOUNTING: | |
509 | case MOUNT_MOUNTING_DONE: | |
510 | case MOUNT_MOUNTING_SIGTERM: | |
511 | case MOUNT_MOUNTING_SIGKILL: | |
512 | case MOUNT_REMOUNTING_SIGTERM: | |
513 | case MOUNT_REMOUNTING_SIGKILL: | |
514 | case MOUNT_UNMOUNTING_SIGTERM: | |
515 | case MOUNT_UNMOUNTING_SIGKILL: | |
516 | case MOUNT_FAILED: | |
517 | if (old_state != state) | |
518 | automount_send_ready(a, a->expire_tokens, -ENODEV); | |
519 | break; | |
520 | default: | |
521 | break; | |
522 | } | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
8d567588 | 527 | static void automount_enter_waiting(Automount *a) { |
03e334a1 | 528 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 529 | int p[2] = { -1, -1 }; |
5ffa8c81 ZJS |
530 | char name[sizeof("systemd-")-1 + DECIMAL_STR_MAX(pid_t) + 1]; |
531 | char options[sizeof("fd=,pgrp=,minproto=5,maxproto=5,direct")-1 | |
532 | + DECIMAL_STR_MAX(int) + DECIMAL_STR_MAX(gid_t) + 1]; | |
8d567588 | 533 | bool mounted = false; |
03e334a1 | 534 | int r, dev_autofs_fd; |
8d567588 LP |
535 | struct stat st; |
536 | ||
537 | assert(a); | |
538 | assert(a->pipe_fd < 0); | |
539 | assert(a->where); | |
540 | ||
f2341e0a LP |
541 | set_clear(a->tokens); |
542 | ||
543 | r = unit_fail_if_symlink(UNIT(a), a->where); | |
544 | if (r < 0) | |
545 | goto fail; | |
546 | ||
547 | (void) mkdir_p_label(a->where, 0555); | |
548 | ||
549 | unit_warn_if_dir_nonempty(UNIT(a), a->where); | |
8d567588 | 550 | |
0b2665c3 LP |
551 | dev_autofs_fd = open_dev_autofs(UNIT(a)->manager); |
552 | if (dev_autofs_fd < 0) { | |
8d567588 LP |
553 | r = dev_autofs_fd; |
554 | goto fail; | |
555 | } | |
556 | ||
a16e1123 | 557 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
558 | r = -errno; |
559 | goto fail; | |
560 | } | |
561 | ||
5ffa8c81 ZJS |
562 | xsprintf(options, "fd=%i,pgrp="PID_FMT",minproto=5,maxproto=5,direct", p[1], getpgrp()); |
563 | xsprintf(name, "systemd-"PID_FMT, getpid()); | |
8d567588 LP |
564 | if (mount(name, a->where, "autofs", 0, options) < 0) { |
565 | r = -errno; | |
566 | goto fail; | |
567 | } | |
568 | ||
569 | mounted = true; | |
570 | ||
03e334a1 | 571 | p[1] = safe_close(p[1]); |
8d567588 LP |
572 | |
573 | if (stat(a->where, &st) < 0) { | |
574 | r = -errno; | |
575 | goto fail; | |
576 | } | |
577 | ||
0b2665c3 LP |
578 | ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev); |
579 | if (ioctl_fd < 0) { | |
8d567588 LP |
580 | r = ioctl_fd; |
581 | goto fail; | |
582 | } | |
583 | ||
0b2665c3 LP |
584 | r = autofs_protocol(dev_autofs_fd, ioctl_fd); |
585 | if (r < 0) | |
8d567588 LP |
586 | goto fail; |
587 | ||
deb0a77c | 588 | r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, a->timeout_idle_usec); |
0b2665c3 | 589 | if (r < 0) |
8d567588 LP |
590 | goto fail; |
591 | ||
592 | /* Autofs fun fact: | |
593 | * | |
594 | * Unless we close the ioctl fd here, for some weird reason | |
595 | * the direct mount will not receive events from the | |
596 | * kernel. */ | |
597 | ||
151b9b96 | 598 | r = sd_event_add_io(UNIT(a)->manager->event, &a->pipe_event_source, p[0], EPOLLIN, automount_dispatch_io, a); |
0b2665c3 | 599 | if (r < 0) |
8d567588 LP |
600 | goto fail; |
601 | ||
7dfbe2e3 TG |
602 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); |
603 | ||
8d567588 LP |
604 | a->pipe_fd = p[0]; |
605 | a->dev_id = st.st_dev; | |
606 | ||
607 | automount_set_state(a, AUTOMOUNT_WAITING); | |
608 | ||
609 | return; | |
610 | ||
611 | fail: | |
3d94f76c | 612 | safe_close_pair(p); |
8d567588 LP |
613 | |
614 | if (mounted) | |
a5e41bdb | 615 | repeat_unmount(a->where); |
8d567588 | 616 | |
f2341e0a | 617 | log_unit_error_errno(UNIT(a), r, "Failed to initialize automounter: %m"); |
81a5c6d0 | 618 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
619 | } |
620 | ||
deb0a77c MO |
621 | static void *expire_thread(void *p) { |
622 | struct autofs_dev_ioctl param; | |
623 | _cleanup_(expire_data_freep) struct expire_data *data = (struct expire_data*)p; | |
624 | int r; | |
625 | ||
626 | assert(data->dev_autofs_fd >= 0); | |
627 | assert(data->ioctl_fd >= 0); | |
628 | ||
629 | init_autofs_dev_ioctl(¶m); | |
630 | param.ioctlfd = data->ioctl_fd; | |
631 | ||
632 | do { | |
633 | r = ioctl(data->dev_autofs_fd, AUTOFS_DEV_IOCTL_EXPIRE, ¶m); | |
634 | } while (r >= 0); | |
635 | ||
636 | if (errno != EAGAIN) | |
637 | log_warning_errno(errno, "Failed to expire automount, ignoring: %m"); | |
638 | ||
639 | return NULL; | |
640 | } | |
641 | ||
deb0a77c MO |
642 | static int automount_dispatch_expire(sd_event_source *source, usec_t usec, void *userdata) { |
643 | Automount *a = AUTOMOUNT(userdata); | |
644 | _cleanup_(expire_data_freep) struct expire_data *data = NULL; | |
645 | int r; | |
646 | ||
647 | assert(a); | |
648 | assert(source == a->expire_event_source); | |
649 | ||
650 | data = new0(struct expire_data, 1); | |
651 | if (!data) | |
652 | return log_oom(); | |
653 | ||
654 | data->ioctl_fd = -1; | |
655 | ||
656 | data->dev_autofs_fd = fcntl(UNIT(a)->manager->dev_autofs_fd, F_DUPFD_CLOEXEC, 3); | |
657 | if (data->dev_autofs_fd < 0) | |
f2341e0a | 658 | return log_unit_error_errno(UNIT(a), errno, "Failed to duplicate autofs fd: %m"); |
deb0a77c MO |
659 | |
660 | data->ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); | |
661 | if (data->ioctl_fd < 0) | |
f2341e0a | 662 | return log_unit_error_errno(UNIT(a), data->ioctl_fd, "Couldn't open autofs ioctl fd: %m"); |
deb0a77c MO |
663 | |
664 | r = asynchronous_job(expire_thread, data); | |
665 | if (r < 0) | |
f2341e0a | 666 | return log_unit_error_errno(UNIT(a), r, "Failed to start expire job: %m"); |
deb0a77c MO |
667 | |
668 | data = NULL; | |
669 | ||
670 | return automount_start_expire(a); | |
671 | } | |
672 | ||
673 | static int automount_start_expire(Automount *a) { | |
674 | int r; | |
675 | usec_t timeout; | |
676 | ||
677 | assert(a); | |
678 | ||
93a3b53b DM |
679 | if (a->timeout_idle_usec == 0) |
680 | return 0; | |
681 | ||
dbf5cc47 | 682 | timeout = now(CLOCK_MONOTONIC) + MAX(a->timeout_idle_usec/3, USEC_PER_SEC); |
deb0a77c MO |
683 | |
684 | if (a->expire_event_source) { | |
685 | r = sd_event_source_set_time(a->expire_event_source, timeout); | |
686 | if (r < 0) | |
687 | return r; | |
688 | ||
689 | return sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_ONESHOT); | |
690 | } | |
691 | ||
7dfbe2e3 | 692 | r = sd_event_add_time( |
deb0a77c MO |
693 | UNIT(a)->manager->event, |
694 | &a->expire_event_source, | |
695 | CLOCK_MONOTONIC, timeout, 0, | |
696 | automount_dispatch_expire, a); | |
7dfbe2e3 TG |
697 | if (r < 0) |
698 | return r; | |
699 | ||
700 | (void) sd_event_source_set_description(a->expire_event_source, "automount-expire"); | |
701 | ||
702 | return 0; | |
deb0a77c MO |
703 | } |
704 | ||
8d567588 | 705 | static void automount_enter_runnning(Automount *a) { |
718db961 | 706 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
3ecaa09b LP |
707 | struct stat st; |
708 | int r; | |
8d567588 LP |
709 | |
710 | assert(a); | |
8d567588 | 711 | |
ba3e67a7 LP |
712 | /* We don't take mount requests anymore if we are supposed to |
713 | * shut down anyway */ | |
31afa0a4 | 714 | if (unit_stop_pending(UNIT(a))) { |
f2341e0a | 715 | log_unit_debug(UNIT(a), "Suppressing automount request since unit stop is scheduled."); |
deb0a77c MO |
716 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
717 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
ba3e67a7 LP |
718 | return; |
719 | } | |
720 | ||
d2e54fae | 721 | mkdir_p_label(a->where, a->directory_mode); |
8d567588 | 722 | |
1cf18f27 LP |
723 | /* Before we do anything, let's see if somebody is playing games with us? */ |
724 | if (lstat(a->where, &st) < 0) { | |
f2341e0a | 725 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); |
8d567588 LP |
726 | goto fail; |
727 | } | |
728 | ||
729 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
f2341e0a | 730 | log_unit_info(UNIT(a), "Automount point already active?"); |
3ecaa09b LP |
731 | else { |
732 | r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), | |
733 | JOB_REPLACE, true, &error, NULL); | |
734 | if (r < 0) { | |
f2341e0a | 735 | log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r)); |
3ecaa09b LP |
736 | goto fail; |
737 | } | |
8d567588 LP |
738 | } |
739 | ||
740 | automount_set_state(a, AUTOMOUNT_RUNNING); | |
741 | return; | |
742 | ||
743 | fail: | |
81a5c6d0 | 744 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
745 | } |
746 | ||
747 | static int automount_start(Unit *u) { | |
748 | Automount *a = AUTOMOUNT(u); | |
749 | ||
750 | assert(a); | |
74ac3cbd | 751 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED); |
01f78473 | 752 | |
e26d6ce5 | 753 | if (path_is_mount_point(a->where, 0) > 0) { |
f2341e0a | 754 | log_unit_error(u, "Path %s is already a mount point, refusing start.", a->where); |
8d567588 LP |
755 | return -EEXIST; |
756 | } | |
757 | ||
3ecaa09b | 758 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 759 | return -ENOENT; |
8d567588 | 760 | |
81a5c6d0 | 761 | a->result = AUTOMOUNT_SUCCESS; |
8d567588 | 762 | automount_enter_waiting(a); |
82a2b6bb | 763 | return 1; |
8d567588 LP |
764 | } |
765 | ||
766 | static int automount_stop(Unit *u) { | |
767 | Automount *a = AUTOMOUNT(u); | |
768 | ||
769 | assert(a); | |
8d567588 LP |
770 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); |
771 | ||
81a5c6d0 | 772 | automount_enter_dead(a, AUTOMOUNT_SUCCESS); |
82a2b6bb | 773 | return 1; |
8d567588 LP |
774 | } |
775 | ||
a16e1123 LP |
776 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
777 | Automount *a = AUTOMOUNT(u); | |
a16e1123 | 778 | Iterator i; |
a34ceba6 LP |
779 | void *p; |
780 | int r; | |
a16e1123 LP |
781 | |
782 | assert(a); | |
783 | assert(f); | |
784 | assert(fds); | |
785 | ||
786 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
81a5c6d0 | 787 | unit_serialize_item(u, f, "result", automount_result_to_string(a->result)); |
a16e1123 LP |
788 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); |
789 | ||
790 | SET_FOREACH(p, a->tokens, i) | |
791 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
deb0a77c MO |
792 | SET_FOREACH(p, a->expire_tokens, i) |
793 | unit_serialize_item_format(u, f, "expire-token", "%u", PTR_TO_UINT(p)); | |
a16e1123 | 794 | |
a34ceba6 LP |
795 | r = unit_serialize_item_fd(u, f, fds, "pipe-fd", a->pipe_fd); |
796 | if (r < 0) | |
797 | return r; | |
a16e1123 LP |
798 | |
799 | return 0; | |
800 | } | |
801 | ||
802 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
803 | Automount *a = AUTOMOUNT(u); | |
804 | int r; | |
805 | ||
806 | assert(a); | |
807 | assert(fds); | |
808 | ||
809 | if (streq(key, "state")) { | |
810 | AutomountState state; | |
811 | ||
0b2665c3 LP |
812 | state = automount_state_from_string(value); |
813 | if (state < 0) | |
f2341e0a | 814 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
815 | else |
816 | a->deserialized_state = state; | |
81a5c6d0 LP |
817 | } else if (streq(key, "result")) { |
818 | AutomountResult f; | |
819 | ||
820 | f = automount_result_from_string(value); | |
821 | if (f < 0) | |
f2341e0a | 822 | log_unit_debug(u, "Failed to parse result value: %s", value); |
81a5c6d0 LP |
823 | else if (f != AUTOMOUNT_SUCCESS) |
824 | a->result = f; | |
a16e1123 | 825 | |
a16e1123 LP |
826 | } else if (streq(key, "dev-id")) { |
827 | unsigned d; | |
828 | ||
829 | if (safe_atou(value, &d) < 0) | |
f2341e0a | 830 | log_unit_debug(u, "Failed to parse dev-id value: %s", value); |
a16e1123 LP |
831 | else |
832 | a->dev_id = (unsigned) d; | |
833 | } else if (streq(key, "token")) { | |
834 | unsigned token; | |
835 | ||
836 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 837 | log_unit_debug(u, "Failed to parse token value: %s", value); |
a16e1123 | 838 | else { |
f34beace LP |
839 | r = set_ensure_allocated(&a->tokens, NULL); |
840 | if (r < 0) { | |
841 | log_oom(); | |
842 | return 0; | |
843 | } | |
a16e1123 | 844 | |
0b2665c3 LP |
845 | r = set_put(a->tokens, UINT_TO_PTR(token)); |
846 | if (r < 0) | |
f2341e0a | 847 | log_unit_error_errno(u, r, "Failed to add token to set: %m"); |
a16e1123 | 848 | } |
deb0a77c MO |
849 | } else if (streq(key, "expire-token")) { |
850 | unsigned token; | |
851 | ||
852 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 853 | log_unit_debug(u, "Failed to parse token value: %s", value); |
deb0a77c MO |
854 | else { |
855 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
856 | if (r < 0) { | |
857 | log_oom(); | |
858 | return 0; | |
859 | } | |
860 | ||
861 | r = set_put(a->expire_tokens, UINT_TO_PTR(token)); | |
862 | if (r < 0) | |
f2341e0a | 863 | log_unit_error_errno(u, r, "Failed to add expire token to set: %m"); |
deb0a77c | 864 | } |
a16e1123 LP |
865 | } else if (streq(key, "pipe-fd")) { |
866 | int fd; | |
867 | ||
868 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 869 | log_unit_debug(u, "Failed to parse pipe-fd value: %s", value); |
a16e1123 | 870 | else { |
03e334a1 | 871 | safe_close(a->pipe_fd); |
a16e1123 LP |
872 | a->pipe_fd = fdset_remove(fds, fd); |
873 | } | |
874 | } else | |
f2341e0a | 875 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
876 | |
877 | return 0; | |
878 | } | |
879 | ||
87f0e418 | 880 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 881 | assert(u); |
87f0e418 | 882 | |
e537352b | 883 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
884 | } |
885 | ||
10a94420 LP |
886 | static const char *automount_sub_state_to_string(Unit *u) { |
887 | assert(u); | |
888 | ||
a16e1123 | 889 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
890 | } |
891 | ||
701cc384 | 892 | static bool automount_check_gc(Unit *u) { |
3ecaa09b | 893 | assert(u); |
701cc384 | 894 | |
3ecaa09b | 895 | if (!UNIT_TRIGGER(u)) |
7573916f LP |
896 | return false; |
897 | ||
3ecaa09b | 898 | return UNIT_VTABLE(UNIT_TRIGGER(u))->check_gc(UNIT_TRIGGER(u)); |
701cc384 LP |
899 | } |
900 | ||
718db961 | 901 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { |
deb0a77c | 902 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
8d567588 | 903 | union autofs_v5_packet_union packet; |
718db961 | 904 | Automount *a = AUTOMOUNT(userdata); |
5f8ae398 | 905 | struct stat st; |
8d567588 LP |
906 | int r; |
907 | ||
8d567588 LP |
908 | assert(a); |
909 | assert(fd == a->pipe_fd); | |
910 | ||
911 | if (events != EPOLLIN) { | |
f2341e0a | 912 | log_unit_error(UNIT(a), "Got invalid poll event %"PRIu32" on pipe (fd=%d)", events, fd); |
8d567588 LP |
913 | goto fail; |
914 | } | |
915 | ||
a6dcc7e5 ZJS |
916 | r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); |
917 | if (r < 0) { | |
f2341e0a | 918 | log_unit_error_errno(UNIT(a), r, "Invalid read from pipe: %m"); |
8d567588 LP |
919 | goto fail; |
920 | } | |
921 | ||
922 | switch (packet.hdr.type) { | |
923 | ||
924 | case autofs_ptype_missing_direct: | |
941a4041 LP |
925 | |
926 | if (packet.v5_packet.pid > 0) { | |
e42e801b | 927 | _cleanup_free_ char *p = NULL; |
941a4041 | 928 | |
87d2c1ff | 929 | get_process_comm(packet.v5_packet.pid, &p); |
f2341e0a | 930 | log_unit_info(UNIT(a), "Got automount request for %s, triggered by %"PRIu32" (%s)", a->where, packet.v5_packet.pid, strna(p)); |
941a4041 | 931 | } else |
f2341e0a | 932 | log_unit_debug(UNIT(a), "Got direct mount request on %s", a->where); |
8d567588 | 933 | |
d5099efc | 934 | r = set_ensure_allocated(&a->tokens, NULL); |
0b2665c3 | 935 | if (r < 0) { |
f2341e0a | 936 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
0b2665c3 LP |
937 | goto fail; |
938 | } | |
a16e1123 | 939 | |
0b2665c3 LP |
940 | r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); |
941 | if (r < 0) { | |
f2341e0a | 942 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
8d567588 LP |
943 | goto fail; |
944 | } | |
945 | ||
946 | automount_enter_runnning(a); | |
947 | break; | |
948 | ||
deb0a77c | 949 | case autofs_ptype_expire_direct: |
f2341e0a | 950 | log_unit_debug(UNIT(a), "Got direct umount request on %s", a->where); |
deb0a77c MO |
951 | |
952 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); | |
953 | ||
954 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
955 | if (r < 0) { | |
f2341e0a | 956 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
deb0a77c MO |
957 | goto fail; |
958 | } | |
959 | ||
960 | r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); | |
961 | if (r < 0) { | |
f2341e0a | 962 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
deb0a77c MO |
963 | goto fail; |
964 | } | |
5f8ae398 MO |
965 | |
966 | /* Before we do anything, let's see if somebody is playing games with us? */ | |
967 | if (lstat(a->where, &st) < 0) { | |
968 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); | |
969 | goto fail; | |
970 | } | |
971 | ||
972 | if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) { | |
973 | log_unit_info(UNIT(a), "Automount point already unmounted?"); | |
974 | automount_send_ready(a, a->expire_tokens, 0); | |
975 | break; | |
976 | } | |
977 | ||
deb0a77c MO |
978 | r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); |
979 | if (r < 0) { | |
f2341e0a | 980 | log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r)); |
deb0a77c MO |
981 | goto fail; |
982 | } | |
983 | break; | |
984 | ||
8d567588 | 985 | default: |
f2341e0a | 986 | log_unit_error(UNIT(a), "Received unknown automount request %i", packet.hdr.type); |
8d567588 LP |
987 | break; |
988 | } | |
989 | ||
718db961 | 990 | return 0; |
8d567588 LP |
991 | |
992 | fail: | |
81a5c6d0 | 993 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
718db961 | 994 | return 0; |
8d567588 LP |
995 | } |
996 | ||
997 | static void automount_shutdown(Manager *m) { | |
998 | assert(m); | |
999 | ||
03e334a1 | 1000 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
1001 | } |
1002 | ||
74ac3cbd | 1003 | static void automount_reset_failed(Unit *u) { |
5632e374 LP |
1004 | Automount *a = AUTOMOUNT(u); |
1005 | ||
1006 | assert(a); | |
1007 | ||
74ac3cbd | 1008 | if (a->state == AUTOMOUNT_FAILED) |
5632e374 LP |
1009 | automount_set_state(a, AUTOMOUNT_DEAD); |
1010 | ||
81a5c6d0 | 1011 | a->result = AUTOMOUNT_SUCCESS; |
5632e374 LP |
1012 | } |
1013 | ||
1c2e9646 | 1014 | static bool automount_supported(void) { |
0faacd47 LP |
1015 | static int supported = -1; |
1016 | ||
0faacd47 LP |
1017 | if (supported < 0) |
1018 | supported = access("/dev/autofs", F_OK) >= 0; | |
1019 | ||
1020 | return supported; | |
1021 | } | |
1022 | ||
81a5c6d0 LP |
1023 | static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = { |
1024 | [AUTOMOUNT_SUCCESS] = "success", | |
1025 | [AUTOMOUNT_FAILURE_RESOURCES] = "resources" | |
1026 | }; | |
1027 | ||
1028 | DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult); | |
1029 | ||
87f0e418 | 1030 | const UnitVTable automount_vtable = { |
7d17cfbc | 1031 | .object_size = sizeof(Automount), |
718db961 | 1032 | |
f975e971 LP |
1033 | .sections = |
1034 | "Unit\0" | |
1035 | "Automount\0" | |
1036 | "Install\0", | |
5cb5a6ff | 1037 | |
e537352b | 1038 | .no_alias = true, |
8d567588 | 1039 | .no_instances = true, |
e537352b | 1040 | |
034c6ed7 | 1041 | .init = automount_init, |
e537352b | 1042 | .load = automount_load, |
034c6ed7 | 1043 | .done = automount_done, |
5cb5a6ff | 1044 | |
a16e1123 LP |
1045 | .coldplug = automount_coldplug, |
1046 | ||
034c6ed7 | 1047 | .dump = automount_dump, |
5cb5a6ff | 1048 | |
8d567588 LP |
1049 | .start = automount_start, |
1050 | .stop = automount_stop, | |
1051 | ||
a16e1123 LP |
1052 | .serialize = automount_serialize, |
1053 | .deserialize_item = automount_deserialize_item, | |
1054 | ||
10a94420 | 1055 | .active_state = automount_active_state, |
8d567588 LP |
1056 | .sub_state_to_string = automount_sub_state_to_string, |
1057 | ||
701cc384 LP |
1058 | .check_gc = automount_check_gc, |
1059 | ||
74ac3cbd | 1060 | .reset_failed = automount_reset_failed, |
5632e374 | 1061 | |
718db961 | 1062 | .bus_vtable = bus_automount_vtable, |
4139c1b2 | 1063 | |
c6918296 | 1064 | .shutdown = automount_shutdown, |
0faacd47 | 1065 | .supported = automount_supported, |
c6918296 MS |
1066 | |
1067 | .status_message_formats = { | |
1068 | .finished_start_job = { | |
1069 | [JOB_DONE] = "Set up automount %s.", | |
1070 | [JOB_FAILED] = "Failed to set up automount %s.", | |
c6918296 MS |
1071 | }, |
1072 | .finished_stop_job = { | |
1073 | [JOB_DONE] = "Unset automount %s.", | |
1074 | [JOB_FAILED] = "Failed to unset automount %s.", | |
1075 | }, | |
1076 | }, | |
5cb5a6ff | 1077 | }; |