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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 LP |
23 | #include <limits.h> |
24 | #include <sys/mount.h> | |
25 | #include <unistd.h> | |
26 | #include <fcntl.h> | |
27 | #include <sys/epoll.h> | |
28 | #include <sys/stat.h> | |
29 | #include <linux/auto_fs4.h> | |
30 | #include <linux/auto_dev-ioctl.h> | |
5cb5a6ff | 31 | |
87f0e418 | 32 | #include "unit.h" |
5cb5a6ff | 33 | #include "automount.h" |
20ad4cfd | 34 | #include "mount.h" |
8d567588 | 35 | #include "unit-name.h" |
4e67ddd6 | 36 | #include "special.h" |
e51bc1a2 | 37 | #include "label.h" |
49e942b2 | 38 | #include "mkdir.h" |
9eb977db | 39 | #include "path-util.h" |
718db961 LP |
40 | #include "dbus-automount.h" |
41 | #include "bus-util.h" | |
42 | #include "bus-error.h" | |
6482f626 | 43 | #include "formats-util.h" |
0b452006 | 44 | #include "process-util.h" |
deb0a77c | 45 | #include "async.h" |
5cb5a6ff | 46 | |
e537352b LP |
47 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
48 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
49 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
50 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
74ac3cbd | 51 | [AUTOMOUNT_FAILED] = UNIT_FAILED |
e537352b | 52 | }; |
5cb5a6ff | 53 | |
deb0a77c MO |
54 | struct expire_data { |
55 | int dev_autofs_fd; | |
56 | int ioctl_fd; | |
57 | }; | |
58 | ||
59 | static inline void expire_data_free(struct expire_data *data) { | |
60 | if (!data) | |
61 | return; | |
62 | ||
63 | safe_close(data->dev_autofs_fd); | |
64 | safe_close(data->ioctl_fd); | |
65 | free(data); | |
66 | } | |
67 | ||
68 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct expire_data*, expire_data_free); | |
69 | ||
a16e1123 | 70 | static int open_dev_autofs(Manager *m); |
718db961 | 71 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata); |
8d567588 | 72 | |
e537352b LP |
73 | static void automount_init(Unit *u) { |
74 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 75 | |
8d567588 | 76 | assert(u); |
ac155bb8 | 77 | assert(u->load_state == UNIT_STUB); |
8d567588 | 78 | |
718db961 | 79 | a->pipe_fd = -1; |
1cf18f27 | 80 | a->directory_mode = 0755; |
1124fe6f | 81 | UNIT(a)->ignore_on_isolate = true; |
8d567588 LP |
82 | } |
83 | ||
a5e41bdb | 84 | static void repeat_unmount(const char *path) { |
8d567588 LP |
85 | assert(path); |
86 | ||
87 | for (;;) { | |
1b560190 LP |
88 | /* If there are multiple mounts on a mount point, this |
89 | * removes them all */ | |
8d567588 LP |
90 | |
91 | if (umount2(path, MNT_DETACH) >= 0) | |
92 | continue; | |
93 | ||
94 | if (errno != EINVAL) | |
56f64d95 | 95 | log_error_errno(errno, "Failed to unmount: %m"); |
8d567588 LP |
96 | |
97 | break; | |
98 | } | |
99 | } | |
100 | ||
deb0a77c MO |
101 | static int automount_send_ready(Automount *a, Set *tokens, int status); |
102 | ||
8d567588 LP |
103 | static void unmount_autofs(Automount *a) { |
104 | assert(a); | |
105 | ||
106 | if (a->pipe_fd < 0) | |
107 | return; | |
108 | ||
deb0a77c MO |
109 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
110 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
8d567588 | 111 | |
718db961 | 112 | a->pipe_event_source = sd_event_source_unref(a->pipe_event_source); |
03e334a1 | 113 | a->pipe_fd = safe_close(a->pipe_fd); |
8d567588 | 114 | |
a16e1123 LP |
115 | /* If we reload/reexecute things we keep the mount point |
116 | * around */ | |
117 | if (a->where && | |
1124fe6f MS |
118 | (UNIT(a)->manager->exit_code != MANAGER_RELOAD && |
119 | UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) | |
a5e41bdb | 120 | repeat_unmount(a->where); |
8d567588 LP |
121 | } |
122 | ||
123 | static void automount_done(Unit *u) { | |
124 | Automount *a = AUTOMOUNT(u); | |
125 | ||
126 | assert(a); | |
127 | ||
128 | unmount_autofs(a); | |
8d567588 | 129 | |
a16e1123 LP |
130 | free(a->where); |
131 | a->where = NULL; | |
132 | ||
133 | set_free(a->tokens); | |
134 | a->tokens = NULL; | |
deb0a77c MO |
135 | set_free(a->expire_tokens); |
136 | a->expire_tokens = NULL; | |
137 | ||
138 | a->expire_event_source = sd_event_source_unref(a->expire_event_source); | |
8d567588 LP |
139 | } |
140 | ||
a57f7e2c LP |
141 | static int automount_add_mount_links(Automount *a) { |
142 | _cleanup_free_ char *parent = NULL; | |
6e2ef85b LP |
143 | int r; |
144 | ||
145 | assert(a); | |
1b560190 | 146 | |
a57f7e2c | 147 | r = path_get_parent(a->where, &parent); |
0b2665c3 | 148 | if (r < 0) |
6e2ef85b LP |
149 | return r; |
150 | ||
a57f7e2c | 151 | return unit_require_mounts_for(UNIT(a), parent); |
6e2ef85b LP |
152 | } |
153 | ||
2edd4434 LP |
154 | static int automount_add_default_dependencies(Automount *a) { |
155 | int r; | |
156 | ||
157 | assert(a); | |
158 | ||
67445f4e | 159 | if (UNIT(a)->manager->running_as != SYSTEMD_SYSTEM) |
6b1dc2bd | 160 | return 0; |
2a77d31d | 161 | |
6b1dc2bd LP |
162 | r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
163 | if (r < 0) | |
164 | return r; | |
2edd4434 LP |
165 | |
166 | return 0; | |
167 | } | |
168 | ||
8d567588 LP |
169 | static int automount_verify(Automount *a) { |
170 | bool b; | |
e1d75803 | 171 | _cleanup_free_ char *e = NULL; |
8d567588 LP |
172 | assert(a); |
173 | ||
1124fe6f | 174 | if (UNIT(a)->load_state != UNIT_LOADED) |
8d567588 LP |
175 | return 0; |
176 | ||
41e45059 | 177 | if (path_equal(a->where, "/")) { |
79008bdd | 178 | log_unit_error(UNIT(a)->id, "Cannot have an automount unit for the root directory. Refusing."); |
41e45059 LP |
179 | return -EINVAL; |
180 | } | |
181 | ||
0b2665c3 LP |
182 | e = unit_name_from_path(a->where, ".automount"); |
183 | if (!e) | |
8d567588 LP |
184 | return -ENOMEM; |
185 | ||
186 | b = unit_has_name(UNIT(a), e); | |
8d567588 LP |
187 | |
188 | if (!b) { | |
79008bdd | 189 | log_unit_error(UNIT(a)->id, "%s's Where setting doesn't match unit name. Refusing.", UNIT(a)->id); |
8d567588 LP |
190 | return -EINVAL; |
191 | } | |
192 | ||
193 | return 0; | |
e537352b | 194 | } |
5cb5a6ff | 195 | |
e537352b | 196 | static int automount_load(Unit *u) { |
e537352b | 197 | Automount *a = AUTOMOUNT(u); |
3ecaa09b | 198 | int r; |
23a177ef | 199 | |
e537352b | 200 | assert(u); |
ac155bb8 | 201 | assert(u->load_state == UNIT_STUB); |
5cb5a6ff | 202 | |
e537352b | 203 | /* Load a .automount file */ |
0b2665c3 LP |
204 | r = unit_load_fragment_and_dropin_optional(u); |
205 | if (r < 0) | |
e537352b | 206 | return r; |
23a177ef | 207 | |
ac155bb8 | 208 | if (u->load_state == UNIT_LOADED) { |
57020a3a | 209 | Unit *x; |
23a177ef | 210 | |
0b2665c3 LP |
211 | if (!a->where) { |
212 | a->where = unit_name_to_path(u->id); | |
213 | if (!a->where) | |
a16e1123 | 214 | return -ENOMEM; |
0b2665c3 | 215 | } |
a16e1123 LP |
216 | |
217 | path_kill_slashes(a->where); | |
218 | ||
3ecaa09b | 219 | r = unit_load_related_unit(u, ".mount", &x); |
0b2665c3 | 220 | if (r < 0) |
6e2ef85b LP |
221 | return r; |
222 | ||
3ecaa09b | 223 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
57020a3a | 224 | if (r < 0) |
23a177ef LP |
225 | return r; |
226 | ||
3ecaa09b | 227 | r = automount_add_mount_links(a); |
57020a3a | 228 | if (r < 0) |
23a177ef | 229 | return r; |
4e67ddd6 | 230 | |
0b2665c3 LP |
231 | if (UNIT(a)->default_dependencies) { |
232 | r = automount_add_default_dependencies(a); | |
233 | if (r < 0) | |
4e67ddd6 | 234 | return r; |
0b2665c3 | 235 | } |
23a177ef LP |
236 | } |
237 | ||
8d567588 | 238 | return automount_verify(a); |
5cb5a6ff LP |
239 | } |
240 | ||
8d567588 LP |
241 | static void automount_set_state(Automount *a, AutomountState state) { |
242 | AutomountState old_state; | |
e537352b | 243 | assert(a); |
034c6ed7 | 244 | |
8d567588 LP |
245 | old_state = a->state; |
246 | a->state = state; | |
247 | ||
248 | if (state != AUTOMOUNT_WAITING && | |
249 | state != AUTOMOUNT_RUNNING) | |
250 | unmount_autofs(a); | |
251 | ||
252 | if (state != old_state) | |
79008bdd | 253 | log_unit_debug(UNIT(a)->id, |
66870f90 ZJS |
254 | "%s changed %s -> %s", |
255 | UNIT(a)->id, | |
256 | automount_state_to_string(old_state), | |
257 | automount_state_to_string(state)); | |
8d567588 | 258 | |
e2f3b44c | 259 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
260 | } |
261 | ||
be847e82 | 262 | static int automount_coldplug(Unit *u) { |
a16e1123 LP |
263 | Automount *a = AUTOMOUNT(u); |
264 | int r; | |
265 | ||
266 | assert(a); | |
267 | assert(a->state == AUTOMOUNT_DEAD); | |
268 | ||
269 | if (a->deserialized_state != a->state) { | |
270 | ||
0b2665c3 LP |
271 | r = open_dev_autofs(u->manager); |
272 | if (r < 0) | |
a16e1123 LP |
273 | return r; |
274 | ||
275 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
276 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
a16e1123 LP |
277 | assert(a->pipe_fd >= 0); |
278 | ||
151b9b96 | 279 | r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u); |
0b2665c3 | 280 | if (r < 0) |
a16e1123 | 281 | return r; |
7dfbe2e3 TG |
282 | |
283 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); | |
a16e1123 LP |
284 | } |
285 | ||
286 | automount_set_state(a, a->deserialized_state); | |
287 | } | |
288 | ||
289 | return 0; | |
290 | } | |
291 | ||
87f0e418 | 292 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
deb0a77c | 293 | char time_string[FORMAT_TIMESPAN_MAX]; |
a16e1123 | 294 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 295 | |
a16e1123 | 296 | assert(a); |
5cb5a6ff LP |
297 | |
298 | fprintf(f, | |
a16e1123 | 299 | "%sAutomount State: %s\n" |
81a5c6d0 | 300 | "%sResult: %s\n" |
1cf18f27 | 301 | "%sWhere: %s\n" |
deb0a77c MO |
302 | "%sDirectoryMode: %04o\n" |
303 | "%sTimeoutIdleUSec: %s\n", | |
a16e1123 | 304 | prefix, automount_state_to_string(a->state), |
81a5c6d0 | 305 | prefix, automount_result_to_string(a->result), |
1cf18f27 | 306 | prefix, a->where, |
deb0a77c MO |
307 | prefix, a->directory_mode, |
308 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, a->timeout_idle_usec, USEC_PER_SEC)); | |
5cb5a6ff LP |
309 | } |
310 | ||
81a5c6d0 | 311 | static void automount_enter_dead(Automount *a, AutomountResult f) { |
8d567588 LP |
312 | assert(a); |
313 | ||
81a5c6d0 LP |
314 | if (f != AUTOMOUNT_SUCCESS) |
315 | a->result = f; | |
8d567588 | 316 | |
81a5c6d0 | 317 | automount_set_state(a, a->result != AUTOMOUNT_SUCCESS ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD); |
8d567588 LP |
318 | } |
319 | ||
320 | static int open_dev_autofs(Manager *m) { | |
321 | struct autofs_dev_ioctl param; | |
322 | ||
323 | assert(m); | |
324 | ||
325 | if (m->dev_autofs_fd >= 0) | |
326 | return m->dev_autofs_fd; | |
327 | ||
c9bc0764 | 328 | label_fix("/dev/autofs", false, false); |
56cf987f | 329 | |
0b2665c3 | 330 | m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY); |
4a62c710 MS |
331 | if (m->dev_autofs_fd < 0) |
332 | return log_error_errno(errno, "Failed to open /dev/autofs: %m"); | |
8d567588 LP |
333 | |
334 | init_autofs_dev_ioctl(¶m); | |
335 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
03e334a1 | 336 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
337 | return -errno; |
338 | } | |
339 | ||
340 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
341 | ||
342 | return m->dev_autofs_fd; | |
343 | } | |
344 | ||
345 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
346 | struct autofs_dev_ioctl *param; | |
347 | size_t l; | |
8d567588 LP |
348 | |
349 | assert(dev_autofs_fd >= 0); | |
350 | assert(where); | |
351 | ||
352 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
0b2665c3 | 353 | param = alloca(l); |
8d567588 LP |
354 | |
355 | init_autofs_dev_ioctl(param); | |
356 | param->size = l; | |
357 | param->ioctlfd = -1; | |
358 | param->openmount.devid = devid; | |
359 | strcpy(param->path, where); | |
360 | ||
0b2665c3 LP |
361 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) |
362 | return -errno; | |
8d567588 | 363 | |
0b2665c3 LP |
364 | if (param->ioctlfd < 0) |
365 | return -EIO; | |
8d567588 | 366 | |
f34beace | 367 | (void) fd_cloexec(param->ioctlfd, true); |
0b2665c3 | 368 | return param->ioctlfd; |
8d567588 LP |
369 | } |
370 | ||
371 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
372 | uint32_t major, minor; | |
373 | struct autofs_dev_ioctl param; | |
374 | ||
375 | assert(dev_autofs_fd >= 0); | |
376 | assert(ioctl_fd >= 0); | |
377 | ||
378 | init_autofs_dev_ioctl(¶m); | |
379 | param.ioctlfd = ioctl_fd; | |
380 | ||
381 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
382 | return -errno; | |
383 | ||
384 | major = param.protover.version; | |
385 | ||
386 | init_autofs_dev_ioctl(¶m); | |
387 | param.ioctlfd = ioctl_fd; | |
388 | ||
389 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
390 | return -errno; | |
391 | ||
392 | minor = param.protosubver.sub_version; | |
393 | ||
394 | log_debug("Autofs protocol version %i.%i", major, minor); | |
395 | return 0; | |
396 | } | |
397 | ||
deb0a77c | 398 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, usec_t usec) { |
8d567588 LP |
399 | struct autofs_dev_ioctl param; |
400 | ||
401 | assert(dev_autofs_fd >= 0); | |
402 | assert(ioctl_fd >= 0); | |
403 | ||
404 | init_autofs_dev_ioctl(¶m); | |
405 | param.ioctlfd = ioctl_fd; | |
deb0a77c MO |
406 | |
407 | /* Convert to seconds, rounding up. */ | |
408 | param.timeout.timeout = (usec + USEC_PER_SEC - 1) / USEC_PER_SEC; | |
8d567588 LP |
409 | |
410 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
411 | return -errno; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
417 | struct autofs_dev_ioctl param; | |
418 | ||
419 | assert(dev_autofs_fd >= 0); | |
420 | assert(ioctl_fd >= 0); | |
421 | ||
422 | init_autofs_dev_ioctl(¶m); | |
423 | param.ioctlfd = ioctl_fd; | |
424 | ||
425 | if (status) { | |
426 | param.fail.token = token; | |
427 | param.fail.status = status; | |
428 | } else | |
429 | param.ready.token = token; | |
430 | ||
431 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
432 | return -errno; | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
deb0a77c | 437 | static int automount_send_ready(Automount *a, Set *tokens, int status) { |
03e334a1 | 438 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 439 | unsigned token; |
03e334a1 | 440 | int r; |
8d567588 LP |
441 | |
442 | assert(a); | |
443 | assert(status <= 0); | |
444 | ||
deb0a77c | 445 | if (set_isempty(tokens)) |
8d567588 LP |
446 | return 0; |
447 | ||
0b2665c3 | 448 | ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); |
03e334a1 LP |
449 | if (ioctl_fd < 0) |
450 | return ioctl_fd; | |
8d567588 LP |
451 | |
452 | if (status) | |
31938a85 | 453 | log_unit_debug_errno(UNIT(a)->id, status, "Sending failure: %m"); |
8d567588 | 454 | else |
79008bdd | 455 | log_unit_debug(UNIT(a)->id, "Sending success."); |
8d567588 | 456 | |
e364ad06 LP |
457 | r = 0; |
458 | ||
8d567588 | 459 | /* Autofs thankfully does not hand out 0 as a token */ |
deb0a77c | 460 | while ((token = PTR_TO_UINT(set_steal_first(tokens)))) { |
8d567588 LP |
461 | int k; |
462 | ||
463 | /* Autofs fun fact II: | |
464 | * | |
465 | * if you pass a positive status code here, the kernel will | |
466 | * freeze! Yay! */ | |
467 | ||
0b2665c3 LP |
468 | k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd, |
469 | ioctl_fd, | |
470 | token, | |
471 | status); | |
472 | if (k < 0) | |
8d567588 LP |
473 | r = k; |
474 | } | |
475 | ||
8d567588 LP |
476 | return r; |
477 | } | |
478 | ||
deb0a77c | 479 | int automount_update_mount(Automount *a, MountState old_state, MountState state) { |
deb0a77c MO |
480 | assert(a); |
481 | ||
482 | switch (state) { | |
483 | case MOUNT_MOUNTED: | |
484 | case MOUNT_REMOUNTING: | |
485 | automount_send_ready(a, a->tokens, 0); | |
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); | |
498 | break; | |
499 | default: | |
500 | break; | |
501 | } | |
502 | ||
503 | switch (state) { | |
504 | case MOUNT_DEAD: | |
505 | automount_send_ready(a, a->expire_tokens, 0); | |
506 | break; | |
507 | case MOUNT_MOUNTING: | |
508 | case MOUNT_MOUNTING_DONE: | |
509 | case MOUNT_MOUNTING_SIGTERM: | |
510 | case MOUNT_MOUNTING_SIGKILL: | |
511 | case MOUNT_REMOUNTING_SIGTERM: | |
512 | case MOUNT_REMOUNTING_SIGKILL: | |
513 | case MOUNT_UNMOUNTING_SIGTERM: | |
514 | case MOUNT_UNMOUNTING_SIGKILL: | |
515 | case MOUNT_FAILED: | |
516 | if (old_state != state) | |
517 | automount_send_ready(a, a->expire_tokens, -ENODEV); | |
518 | break; | |
519 | default: | |
520 | break; | |
521 | } | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
8d567588 | 526 | static void automount_enter_waiting(Automount *a) { |
03e334a1 | 527 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 528 | int p[2] = { -1, -1 }; |
5ffa8c81 ZJS |
529 | char name[sizeof("systemd-")-1 + DECIMAL_STR_MAX(pid_t) + 1]; |
530 | char options[sizeof("fd=,pgrp=,minproto=5,maxproto=5,direct")-1 | |
531 | + DECIMAL_STR_MAX(int) + DECIMAL_STR_MAX(gid_t) + 1]; | |
8d567588 | 532 | bool mounted = false; |
03e334a1 | 533 | int r, dev_autofs_fd; |
8d567588 LP |
534 | struct stat st; |
535 | ||
536 | assert(a); | |
537 | assert(a->pipe_fd < 0); | |
538 | assert(a->where); | |
539 | ||
540 | if (a->tokens) | |
541 | set_clear(a->tokens); | |
8d567588 | 542 | |
0b2665c3 LP |
543 | dev_autofs_fd = open_dev_autofs(UNIT(a)->manager); |
544 | if (dev_autofs_fd < 0) { | |
8d567588 LP |
545 | r = dev_autofs_fd; |
546 | goto fail; | |
547 | } | |
548 | ||
549 | /* We knowingly ignore the results of this call */ | |
d2e54fae | 550 | mkdir_p_label(a->where, 0555); |
8d567588 | 551 | |
20ad4cfd | 552 | warn_if_dir_nonempty(a->meta.id, a->where); |
e872b43c | 553 | |
a16e1123 | 554 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
555 | r = -errno; |
556 | goto fail; | |
557 | } | |
558 | ||
5ffa8c81 ZJS |
559 | xsprintf(options, "fd=%i,pgrp="PID_FMT",minproto=5,maxproto=5,direct", p[1], getpgrp()); |
560 | xsprintf(name, "systemd-"PID_FMT, getpid()); | |
8d567588 LP |
561 | if (mount(name, a->where, "autofs", 0, options) < 0) { |
562 | r = -errno; | |
563 | goto fail; | |
564 | } | |
565 | ||
566 | mounted = true; | |
567 | ||
03e334a1 | 568 | p[1] = safe_close(p[1]); |
8d567588 LP |
569 | |
570 | if (stat(a->where, &st) < 0) { | |
571 | r = -errno; | |
572 | goto fail; | |
573 | } | |
574 | ||
0b2665c3 LP |
575 | ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev); |
576 | if (ioctl_fd < 0) { | |
8d567588 LP |
577 | r = ioctl_fd; |
578 | goto fail; | |
579 | } | |
580 | ||
0b2665c3 LP |
581 | r = autofs_protocol(dev_autofs_fd, ioctl_fd); |
582 | if (r < 0) | |
8d567588 LP |
583 | goto fail; |
584 | ||
deb0a77c | 585 | r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, a->timeout_idle_usec); |
0b2665c3 | 586 | if (r < 0) |
8d567588 LP |
587 | goto fail; |
588 | ||
589 | /* Autofs fun fact: | |
590 | * | |
591 | * Unless we close the ioctl fd here, for some weird reason | |
592 | * the direct mount will not receive events from the | |
593 | * kernel. */ | |
594 | ||
151b9b96 | 595 | r = sd_event_add_io(UNIT(a)->manager->event, &a->pipe_event_source, p[0], EPOLLIN, automount_dispatch_io, a); |
0b2665c3 | 596 | if (r < 0) |
8d567588 LP |
597 | goto fail; |
598 | ||
7dfbe2e3 TG |
599 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); |
600 | ||
8d567588 LP |
601 | a->pipe_fd = p[0]; |
602 | a->dev_id = st.st_dev; | |
603 | ||
604 | automount_set_state(a, AUTOMOUNT_WAITING); | |
605 | ||
606 | return; | |
607 | ||
608 | fail: | |
3d94f76c | 609 | safe_close_pair(p); |
8d567588 LP |
610 | |
611 | if (mounted) | |
a5e41bdb | 612 | repeat_unmount(a->where); |
8d567588 | 613 | |
79008bdd | 614 | log_unit_error(UNIT(a)->id, |
66870f90 | 615 | "Failed to initialize automounter: %s", strerror(-r)); |
81a5c6d0 | 616 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
617 | } |
618 | ||
deb0a77c MO |
619 | static void *expire_thread(void *p) { |
620 | struct autofs_dev_ioctl param; | |
621 | _cleanup_(expire_data_freep) struct expire_data *data = (struct expire_data*)p; | |
622 | int r; | |
623 | ||
624 | assert(data->dev_autofs_fd >= 0); | |
625 | assert(data->ioctl_fd >= 0); | |
626 | ||
627 | init_autofs_dev_ioctl(¶m); | |
628 | param.ioctlfd = data->ioctl_fd; | |
629 | ||
630 | do { | |
631 | r = ioctl(data->dev_autofs_fd, AUTOFS_DEV_IOCTL_EXPIRE, ¶m); | |
632 | } while (r >= 0); | |
633 | ||
634 | if (errno != EAGAIN) | |
635 | log_warning_errno(errno, "Failed to expire automount, ignoring: %m"); | |
636 | ||
637 | return NULL; | |
638 | } | |
639 | ||
640 | static int automount_start_expire(Automount *a); | |
641 | ||
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) | |
658 | return log_unit_error_errno(UNIT(a)->id, errno, "Failed to duplicate autofs fd: %m"); | |
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) | |
662 | return log_unit_error_errno(UNIT(a)->id, data->ioctl_fd, "Couldn't open autofs ioctl fd: %m"); | |
663 | ||
664 | r = asynchronous_job(expire_thread, data); | |
665 | if (r < 0) | |
666 | return log_unit_error_errno(UNIT(a)->id, r, "Failed to start expire job: %m"); | |
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 | ||
679 | timeout = now(CLOCK_MONOTONIC) + MAX(a->timeout_idle_usec/10, USEC_PER_SEC); | |
680 | ||
681 | if (a->expire_event_source) { | |
682 | r = sd_event_source_set_time(a->expire_event_source, timeout); | |
683 | if (r < 0) | |
684 | return r; | |
685 | ||
686 | return sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_ONESHOT); | |
687 | } | |
688 | ||
7dfbe2e3 | 689 | r = sd_event_add_time( |
deb0a77c MO |
690 | UNIT(a)->manager->event, |
691 | &a->expire_event_source, | |
692 | CLOCK_MONOTONIC, timeout, 0, | |
693 | automount_dispatch_expire, a); | |
7dfbe2e3 TG |
694 | if (r < 0) |
695 | return r; | |
696 | ||
697 | (void) sd_event_source_set_description(a->expire_event_source, "automount-expire"); | |
698 | ||
699 | return 0; | |
deb0a77c MO |
700 | } |
701 | ||
8d567588 | 702 | static void automount_enter_runnning(Automount *a) { |
718db961 | 703 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
3ecaa09b LP |
704 | struct stat st; |
705 | int r; | |
8d567588 LP |
706 | |
707 | assert(a); | |
8d567588 | 708 | |
ba3e67a7 LP |
709 | /* We don't take mount requests anymore if we are supposed to |
710 | * shut down anyway */ | |
31afa0a4 | 711 | if (unit_stop_pending(UNIT(a))) { |
79008bdd | 712 | log_unit_debug(UNIT(a)->id, |
66870f90 | 713 | "Suppressing automount request on %s since unit stop is scheduled.", UNIT(a)->id); |
deb0a77c MO |
714 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
715 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
ba3e67a7 LP |
716 | return; |
717 | } | |
718 | ||
d2e54fae | 719 | mkdir_p_label(a->where, a->directory_mode); |
8d567588 | 720 | |
1cf18f27 LP |
721 | /* Before we do anything, let's see if somebody is playing games with us? */ |
722 | if (lstat(a->where, &st) < 0) { | |
f34beace | 723 | log_unit_warning_errno(UNIT(a)->id, errno, "%s failed to stat automount point: %m", UNIT(a)->id); |
8d567588 LP |
724 | goto fail; |
725 | } | |
726 | ||
727 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
79008bdd | 728 | log_unit_info(UNIT(a)->id, |
66870f90 | 729 | "%s's automount point already active?", UNIT(a)->id); |
3ecaa09b LP |
730 | else { |
731 | r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), | |
732 | JOB_REPLACE, true, &error, NULL); | |
733 | if (r < 0) { | |
79008bdd | 734 | log_unit_warning(UNIT(a)->id, |
3ecaa09b | 735 | "%s failed to queue mount startup job: %s", |
718db961 | 736 | UNIT(a)->id, bus_error_message(&error, r)); |
3ecaa09b LP |
737 | goto fail; |
738 | } | |
8d567588 LP |
739 | } |
740 | ||
deb0a77c MO |
741 | r = automount_start_expire(a); |
742 | if (r < 0) | |
743 | log_unit_warning_errno(UNIT(a)->id, r, "Failed to start expiration timer, ignoring: %m"); | |
744 | ||
8d567588 LP |
745 | automount_set_state(a, AUTOMOUNT_RUNNING); |
746 | return; | |
747 | ||
748 | fail: | |
81a5c6d0 | 749 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
750 | } |
751 | ||
752 | static int automount_start(Unit *u) { | |
753 | Automount *a = AUTOMOUNT(u); | |
754 | ||
755 | assert(a); | |
74ac3cbd | 756 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED); |
01f78473 | 757 | |
da00518b LP |
758 | if (path_is_mount_point(a->where, false) > 0) { |
759 | log_unit_error(u->id, "Path %s is already a mount point, refusing start for %s", a->where, u->id); | |
8d567588 LP |
760 | return -EEXIST; |
761 | } | |
762 | ||
3ecaa09b | 763 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 764 | return -ENOENT; |
8d567588 | 765 | |
81a5c6d0 | 766 | a->result = AUTOMOUNT_SUCCESS; |
8d567588 | 767 | automount_enter_waiting(a); |
82a2b6bb | 768 | return 1; |
8d567588 LP |
769 | } |
770 | ||
771 | static int automount_stop(Unit *u) { | |
772 | Automount *a = AUTOMOUNT(u); | |
773 | ||
774 | assert(a); | |
8d567588 LP |
775 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); |
776 | ||
81a5c6d0 | 777 | automount_enter_dead(a, AUTOMOUNT_SUCCESS); |
82a2b6bb | 778 | return 1; |
8d567588 LP |
779 | } |
780 | ||
a16e1123 LP |
781 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
782 | Automount *a = AUTOMOUNT(u); | |
783 | void *p; | |
784 | Iterator i; | |
785 | ||
786 | assert(a); | |
787 | assert(f); | |
788 | assert(fds); | |
789 | ||
790 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
81a5c6d0 | 791 | unit_serialize_item(u, f, "result", automount_result_to_string(a->result)); |
a16e1123 LP |
792 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); |
793 | ||
794 | SET_FOREACH(p, a->tokens, i) | |
795 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
deb0a77c MO |
796 | SET_FOREACH(p, a->expire_tokens, i) |
797 | unit_serialize_item_format(u, f, "expire-token", "%u", PTR_TO_UINT(p)); | |
a16e1123 LP |
798 | |
799 | if (a->pipe_fd >= 0) { | |
800 | int copy; | |
801 | ||
0b2665c3 LP |
802 | copy = fdset_put_dup(fds, a->pipe_fd); |
803 | if (copy < 0) | |
a16e1123 LP |
804 | return copy; |
805 | ||
806 | unit_serialize_item_format(u, f, "pipe-fd", "%i", copy); | |
807 | } | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
813 | Automount *a = AUTOMOUNT(u); | |
814 | int r; | |
815 | ||
816 | assert(a); | |
817 | assert(fds); | |
818 | ||
819 | if (streq(key, "state")) { | |
820 | AutomountState state; | |
821 | ||
0b2665c3 LP |
822 | state = automount_state_from_string(value); |
823 | if (state < 0) | |
79008bdd | 824 | log_unit_debug(u->id, "Failed to parse state value %s", value); |
a16e1123 LP |
825 | else |
826 | a->deserialized_state = state; | |
81a5c6d0 LP |
827 | } else if (streq(key, "result")) { |
828 | AutomountResult f; | |
829 | ||
830 | f = automount_result_from_string(value); | |
831 | if (f < 0) | |
79008bdd | 832 | log_unit_debug(u->id, "Failed to parse result value %s", value); |
81a5c6d0 LP |
833 | else if (f != AUTOMOUNT_SUCCESS) |
834 | a->result = f; | |
a16e1123 | 835 | |
a16e1123 LP |
836 | } else if (streq(key, "dev-id")) { |
837 | unsigned d; | |
838 | ||
839 | if (safe_atou(value, &d) < 0) | |
79008bdd | 840 | log_unit_debug(u->id, "Failed to parse dev-id value %s", value); |
a16e1123 LP |
841 | else |
842 | a->dev_id = (unsigned) d; | |
843 | } else if (streq(key, "token")) { | |
844 | unsigned token; | |
845 | ||
846 | if (safe_atou(value, &token) < 0) | |
79008bdd | 847 | log_unit_debug(u->id, "Failed to parse token value %s", value); |
a16e1123 | 848 | else { |
f34beace LP |
849 | r = set_ensure_allocated(&a->tokens, NULL); |
850 | if (r < 0) { | |
851 | log_oom(); | |
852 | return 0; | |
853 | } | |
a16e1123 | 854 | |
0b2665c3 LP |
855 | r = set_put(a->tokens, UINT_TO_PTR(token)); |
856 | if (r < 0) | |
f34beace | 857 | log_unit_error_errno(u->id, r, "Failed to add token to set: %m"); |
a16e1123 | 858 | } |
deb0a77c MO |
859 | } else if (streq(key, "expire-token")) { |
860 | unsigned token; | |
861 | ||
862 | if (safe_atou(value, &token) < 0) | |
863 | log_unit_debug(u->id, "Failed to parse token value %s", value); | |
864 | else { | |
865 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
866 | if (r < 0) { | |
867 | log_oom(); | |
868 | return 0; | |
869 | } | |
870 | ||
871 | r = set_put(a->expire_tokens, UINT_TO_PTR(token)); | |
872 | if (r < 0) | |
873 | log_unit_error_errno(u->id, r, "Failed to add expire token to set: %m"); | |
874 | } | |
a16e1123 LP |
875 | } else if (streq(key, "pipe-fd")) { |
876 | int fd; | |
877 | ||
878 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
79008bdd | 879 | log_unit_debug(u->id, "Failed to parse pipe-fd value %s", value); |
a16e1123 | 880 | else { |
03e334a1 | 881 | safe_close(a->pipe_fd); |
a16e1123 LP |
882 | a->pipe_fd = fdset_remove(fds, fd); |
883 | } | |
884 | } else | |
79008bdd | 885 | log_unit_debug(u->id, "Unknown serialization key '%s'", key); |
a16e1123 LP |
886 | |
887 | return 0; | |
888 | } | |
889 | ||
87f0e418 | 890 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 891 | assert(u); |
87f0e418 | 892 | |
e537352b | 893 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
894 | } |
895 | ||
10a94420 LP |
896 | static const char *automount_sub_state_to_string(Unit *u) { |
897 | assert(u); | |
898 | ||
a16e1123 | 899 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
900 | } |
901 | ||
701cc384 | 902 | static bool automount_check_gc(Unit *u) { |
3ecaa09b | 903 | assert(u); |
701cc384 | 904 | |
3ecaa09b | 905 | if (!UNIT_TRIGGER(u)) |
7573916f LP |
906 | return false; |
907 | ||
3ecaa09b | 908 | return UNIT_VTABLE(UNIT_TRIGGER(u))->check_gc(UNIT_TRIGGER(u)); |
701cc384 LP |
909 | } |
910 | ||
718db961 | 911 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { |
deb0a77c | 912 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
8d567588 | 913 | union autofs_v5_packet_union packet; |
718db961 | 914 | Automount *a = AUTOMOUNT(userdata); |
8d567588 LP |
915 | int r; |
916 | ||
8d567588 LP |
917 | assert(a); |
918 | assert(fd == a->pipe_fd); | |
919 | ||
920 | if (events != EPOLLIN) { | |
50b03c8e ZJS |
921 | log_unit_error(UNIT(a)->id, "%s: got invalid poll event %"PRIu32" on pipe (fd=%d)", |
922 | UNIT(a)->id, events, fd); | |
8d567588 LP |
923 | goto fail; |
924 | } | |
925 | ||
a6dcc7e5 ZJS |
926 | r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); |
927 | if (r < 0) { | |
928 | log_unit_error_errno(UNIT(a)->id, r, "Invalid read from pipe: %m"); | |
8d567588 LP |
929 | goto fail; |
930 | } | |
931 | ||
932 | switch (packet.hdr.type) { | |
933 | ||
934 | case autofs_ptype_missing_direct: | |
941a4041 LP |
935 | |
936 | if (packet.v5_packet.pid > 0) { | |
e42e801b | 937 | _cleanup_free_ char *p = NULL; |
941a4041 | 938 | |
87d2c1ff | 939 | get_process_comm(packet.v5_packet.pid, &p); |
79008bdd | 940 | log_unit_info(UNIT(a)->id, |
1fa2f38f | 941 | "Got automount request for %s, triggered by %"PRIu32" (%s)", |
ccd06097 | 942 | a->where, packet.v5_packet.pid, strna(p)); |
941a4041 | 943 | } else |
79008bdd | 944 | log_unit_debug(UNIT(a)->id, "Got direct mount request on %s", a->where); |
8d567588 | 945 | |
d5099efc | 946 | r = set_ensure_allocated(&a->tokens, NULL); |
0b2665c3 | 947 | if (r < 0) { |
79008bdd | 948 | log_unit_error(UNIT(a)->id, "Failed to allocate token set."); |
0b2665c3 LP |
949 | goto fail; |
950 | } | |
a16e1123 | 951 | |
0b2665c3 LP |
952 | r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); |
953 | if (r < 0) { | |
31938a85 | 954 | log_unit_error_errno(UNIT(a)->id, r, "Failed to remember token: %m"); |
8d567588 LP |
955 | goto fail; |
956 | } | |
957 | ||
958 | automount_enter_runnning(a); | |
959 | break; | |
960 | ||
deb0a77c MO |
961 | case autofs_ptype_expire_direct: |
962 | log_unit_debug(UNIT(a)->id, "Got direct umount request on %s", a->where); | |
963 | ||
964 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); | |
965 | ||
966 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
967 | if (r < 0) { | |
968 | log_unit_error(UNIT(a)->id, "Failed to allocate token set."); | |
969 | goto fail; | |
970 | } | |
971 | ||
972 | r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); | |
973 | if (r < 0) { | |
974 | log_unit_error_errno(UNIT(a)->id, r, "Failed to remember token: %m"); | |
975 | goto fail; | |
976 | } | |
977 | r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); | |
978 | if (r < 0) { | |
979 | log_unit_warning(UNIT(a)->id, | |
980 | "%s failed to queue umount startup job: %s", | |
981 | UNIT(a)->id, bus_error_message(&error, r)); | |
982 | goto fail; | |
983 | } | |
984 | break; | |
985 | ||
8d567588 | 986 | default: |
79008bdd | 987 | log_unit_error(UNIT(a)->id, "Received unknown automount request %i", packet.hdr.type); |
8d567588 LP |
988 | break; |
989 | } | |
990 | ||
718db961 | 991 | return 0; |
8d567588 LP |
992 | |
993 | fail: | |
81a5c6d0 | 994 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
718db961 | 995 | return 0; |
8d567588 LP |
996 | } |
997 | ||
998 | static void automount_shutdown(Manager *m) { | |
999 | assert(m); | |
1000 | ||
03e334a1 | 1001 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
1002 | } |
1003 | ||
74ac3cbd | 1004 | static void automount_reset_failed(Unit *u) { |
5632e374 LP |
1005 | Automount *a = AUTOMOUNT(u); |
1006 | ||
1007 | assert(a); | |
1008 | ||
74ac3cbd | 1009 | if (a->state == AUTOMOUNT_FAILED) |
5632e374 LP |
1010 | automount_set_state(a, AUTOMOUNT_DEAD); |
1011 | ||
81a5c6d0 | 1012 | a->result = AUTOMOUNT_SUCCESS; |
5632e374 LP |
1013 | } |
1014 | ||
0faacd47 LP |
1015 | static bool automount_supported(Manager *m) { |
1016 | static int supported = -1; | |
1017 | ||
1018 | assert(m); | |
1019 | ||
1020 | if (supported < 0) | |
1021 | supported = access("/dev/autofs", F_OK) >= 0; | |
1022 | ||
1023 | return supported; | |
1024 | } | |
1025 | ||
a16e1123 LP |
1026 | static const char* const automount_state_table[_AUTOMOUNT_STATE_MAX] = { |
1027 | [AUTOMOUNT_DEAD] = "dead", | |
1028 | [AUTOMOUNT_WAITING] = "waiting", | |
1029 | [AUTOMOUNT_RUNNING] = "running", | |
74ac3cbd | 1030 | [AUTOMOUNT_FAILED] = "failed" |
a16e1123 LP |
1031 | }; |
1032 | ||
1033 | DEFINE_STRING_TABLE_LOOKUP(automount_state, AutomountState); | |
1034 | ||
81a5c6d0 LP |
1035 | static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = { |
1036 | [AUTOMOUNT_SUCCESS] = "success", | |
1037 | [AUTOMOUNT_FAILURE_RESOURCES] = "resources" | |
1038 | }; | |
1039 | ||
1040 | DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult); | |
1041 | ||
87f0e418 | 1042 | const UnitVTable automount_vtable = { |
7d17cfbc | 1043 | .object_size = sizeof(Automount), |
718db961 | 1044 | |
f975e971 LP |
1045 | .sections = |
1046 | "Unit\0" | |
1047 | "Automount\0" | |
1048 | "Install\0", | |
5cb5a6ff | 1049 | |
e537352b | 1050 | .no_alias = true, |
8d567588 | 1051 | .no_instances = true, |
e537352b | 1052 | |
034c6ed7 | 1053 | .init = automount_init, |
e537352b | 1054 | .load = automount_load, |
034c6ed7 | 1055 | .done = automount_done, |
5cb5a6ff | 1056 | |
a16e1123 LP |
1057 | .coldplug = automount_coldplug, |
1058 | ||
034c6ed7 | 1059 | .dump = automount_dump, |
5cb5a6ff | 1060 | |
8d567588 LP |
1061 | .start = automount_start, |
1062 | .stop = automount_stop, | |
1063 | ||
a16e1123 LP |
1064 | .serialize = automount_serialize, |
1065 | .deserialize_item = automount_deserialize_item, | |
1066 | ||
10a94420 | 1067 | .active_state = automount_active_state, |
8d567588 LP |
1068 | .sub_state_to_string = automount_sub_state_to_string, |
1069 | ||
701cc384 LP |
1070 | .check_gc = automount_check_gc, |
1071 | ||
74ac3cbd | 1072 | .reset_failed = automount_reset_failed, |
5632e374 | 1073 | |
c4e2ceae | 1074 | .bus_interface = "org.freedesktop.systemd1.Automount", |
718db961 | 1075 | .bus_vtable = bus_automount_vtable, |
4139c1b2 | 1076 | |
c6918296 | 1077 | .shutdown = automount_shutdown, |
0faacd47 | 1078 | .supported = automount_supported, |
c6918296 MS |
1079 | |
1080 | .status_message_formats = { | |
1081 | .finished_start_job = { | |
1082 | [JOB_DONE] = "Set up automount %s.", | |
1083 | [JOB_FAILED] = "Failed to set up automount %s.", | |
1084 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
1085 | }, | |
1086 | .finished_stop_job = { | |
1087 | [JOB_DONE] = "Unset automount %s.", | |
1088 | [JOB_FAILED] = "Failed to unset automount %s.", | |
1089 | }, | |
1090 | }, | |
5cb5a6ff | 1091 | }; |