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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 | |
b5efdb8a | 32 | #include "alloc-util.h" |
07630cea | 33 | #include "async.h" |
3ffd4af2 | 34 | #include "automount.h" |
07630cea LP |
35 | #include "bus-error.h" |
36 | #include "bus-util.h" | |
37 | #include "dbus-automount.h" | |
3ffd4af2 | 38 | #include "fd-util.h" |
07630cea | 39 | #include "formats-util.h" |
c004493c | 40 | #include "io-util.h" |
e51bc1a2 | 41 | #include "label.h" |
49e942b2 | 42 | #include "mkdir.h" |
4349cd7c | 43 | #include "mount-util.h" |
07630cea | 44 | #include "mount.h" |
6bedfcbb | 45 | #include "parse-util.h" |
9eb977db | 46 | #include "path-util.h" |
0b452006 | 47 | #include "process-util.h" |
07630cea | 48 | #include "special.h" |
15a5e950 | 49 | #include "stdio-util.h" |
8b43440b | 50 | #include "string-table.h" |
07630cea LP |
51 | #include "string-util.h" |
52 | #include "unit-name.h" | |
53 | #include "unit.h" | |
5cb5a6ff | 54 | |
e537352b LP |
55 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
56 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
57 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
58 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
74ac3cbd | 59 | [AUTOMOUNT_FAILED] = UNIT_FAILED |
e537352b | 60 | }; |
5cb5a6ff | 61 | |
deb0a77c MO |
62 | struct expire_data { |
63 | int dev_autofs_fd; | |
64 | int ioctl_fd; | |
65 | }; | |
66 | ||
67 | static inline void expire_data_free(struct expire_data *data) { | |
68 | if (!data) | |
69 | return; | |
70 | ||
71 | safe_close(data->dev_autofs_fd); | |
72 | safe_close(data->ioctl_fd); | |
73 | free(data); | |
74 | } | |
75 | ||
76 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct expire_data*, expire_data_free); | |
77 | ||
a16e1123 | 78 | static int open_dev_autofs(Manager *m); |
718db961 | 79 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata); |
8d567588 | 80 | |
e537352b LP |
81 | static void automount_init(Unit *u) { |
82 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 83 | |
8d567588 | 84 | assert(u); |
ac155bb8 | 85 | assert(u->load_state == UNIT_STUB); |
8d567588 | 86 | |
718db961 | 87 | a->pipe_fd = -1; |
1cf18f27 | 88 | a->directory_mode = 0755; |
1124fe6f | 89 | UNIT(a)->ignore_on_isolate = true; |
8d567588 LP |
90 | } |
91 | ||
deb0a77c MO |
92 | static int automount_send_ready(Automount *a, Set *tokens, int status); |
93 | ||
8d567588 | 94 | static void unmount_autofs(Automount *a) { |
3f2c0bec LP |
95 | int r; |
96 | ||
8d567588 LP |
97 | assert(a); |
98 | ||
99 | if (a->pipe_fd < 0) | |
100 | return; | |
101 | ||
deb0a77c MO |
102 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
103 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
8d567588 | 104 | |
718db961 | 105 | a->pipe_event_source = sd_event_source_unref(a->pipe_event_source); |
03e334a1 | 106 | a->pipe_fd = safe_close(a->pipe_fd); |
8d567588 | 107 | |
a16e1123 LP |
108 | /* If we reload/reexecute things we keep the mount point |
109 | * around */ | |
110 | if (a->where && | |
1124fe6f | 111 | (UNIT(a)->manager->exit_code != MANAGER_RELOAD && |
3f2c0bec LP |
112 | UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) { |
113 | r = repeat_unmount(a->where, MNT_DETACH); | |
114 | if (r < 0) | |
115 | log_error_errno(r, "Failed to unmount: %m"); | |
116 | } | |
8d567588 LP |
117 | } |
118 | ||
119 | static void automount_done(Unit *u) { | |
120 | Automount *a = AUTOMOUNT(u); | |
121 | ||
122 | assert(a); | |
123 | ||
124 | unmount_autofs(a); | |
8d567588 | 125 | |
a1e58e8e | 126 | a->where = mfree(a->where); |
a16e1123 | 127 | |
525d3cc7 LP |
128 | a->tokens = set_free(a->tokens); |
129 | a->expire_tokens = set_free(a->expire_tokens); | |
deb0a77c MO |
130 | |
131 | a->expire_event_source = sd_event_source_unref(a->expire_event_source); | |
8d567588 LP |
132 | } |
133 | ||
a57f7e2c LP |
134 | static int automount_add_mount_links(Automount *a) { |
135 | _cleanup_free_ char *parent = NULL; | |
6e2ef85b LP |
136 | |
137 | assert(a); | |
1b560190 | 138 | |
5f311f8c LP |
139 | parent = dirname_malloc(a->where); |
140 | if (!parent) | |
141 | return -ENOMEM; | |
6e2ef85b | 142 | |
a57f7e2c | 143 | return unit_require_mounts_for(UNIT(a), parent); |
6e2ef85b LP |
144 | } |
145 | ||
2edd4434 LP |
146 | static int automount_add_default_dependencies(Automount *a) { |
147 | int r; | |
148 | ||
149 | assert(a); | |
150 | ||
b2c23da8 | 151 | if (UNIT(a)->manager->running_as != MANAGER_SYSTEM) |
6b1dc2bd | 152 | return 0; |
2a77d31d | 153 | |
6b1dc2bd LP |
154 | r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
155 | if (r < 0) | |
156 | return r; | |
2edd4434 LP |
157 | |
158 | return 0; | |
159 | } | |
160 | ||
8d567588 | 161 | static int automount_verify(Automount *a) { |
e1d75803 | 162 | _cleanup_free_ char *e = NULL; |
7410616c LP |
163 | int r; |
164 | ||
8d567588 LP |
165 | assert(a); |
166 | ||
1124fe6f | 167 | if (UNIT(a)->load_state != UNIT_LOADED) |
8d567588 LP |
168 | return 0; |
169 | ||
41e45059 | 170 | if (path_equal(a->where, "/")) { |
f2341e0a | 171 | log_unit_error(UNIT(a), "Cannot have an automount unit for the root directory. Refusing."); |
41e45059 LP |
172 | return -EINVAL; |
173 | } | |
174 | ||
7410616c LP |
175 | r = unit_name_from_path(a->where, ".automount", &e); |
176 | if (r < 0) | |
f2341e0a | 177 | return log_unit_error(UNIT(a), "Failed to generate unit name from path: %m"); |
8d567588 | 178 | |
7410616c | 179 | if (!unit_has_name(UNIT(a), e)) { |
f2341e0a | 180 | log_unit_error(UNIT(a), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
181 | return -EINVAL; |
182 | } | |
183 | ||
184 | return 0; | |
e537352b | 185 | } |
5cb5a6ff | 186 | |
e537352b | 187 | static int automount_load(Unit *u) { |
e537352b | 188 | Automount *a = AUTOMOUNT(u); |
3ecaa09b | 189 | int r; |
23a177ef | 190 | |
e537352b | 191 | assert(u); |
ac155bb8 | 192 | assert(u->load_state == UNIT_STUB); |
5cb5a6ff | 193 | |
e537352b | 194 | /* Load a .automount file */ |
0b2665c3 LP |
195 | r = unit_load_fragment_and_dropin_optional(u); |
196 | if (r < 0) | |
e537352b | 197 | return r; |
23a177ef | 198 | |
ac155bb8 | 199 | if (u->load_state == UNIT_LOADED) { |
57020a3a | 200 | Unit *x; |
23a177ef | 201 | |
0b2665c3 | 202 | if (!a->where) { |
7410616c LP |
203 | r = unit_name_to_path(u->id, &a->where); |
204 | if (r < 0) | |
205 | return r; | |
0b2665c3 | 206 | } |
a16e1123 LP |
207 | |
208 | path_kill_slashes(a->where); | |
209 | ||
3ecaa09b | 210 | r = unit_load_related_unit(u, ".mount", &x); |
0b2665c3 | 211 | if (r < 0) |
6e2ef85b LP |
212 | return r; |
213 | ||
3ecaa09b | 214 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
57020a3a | 215 | if (r < 0) |
23a177ef LP |
216 | return r; |
217 | ||
3ecaa09b | 218 | r = automount_add_mount_links(a); |
57020a3a | 219 | if (r < 0) |
23a177ef | 220 | return r; |
4e67ddd6 | 221 | |
0b2665c3 LP |
222 | if (UNIT(a)->default_dependencies) { |
223 | r = automount_add_default_dependencies(a); | |
224 | if (r < 0) | |
4e67ddd6 | 225 | return r; |
0b2665c3 | 226 | } |
23a177ef LP |
227 | } |
228 | ||
8d567588 | 229 | return automount_verify(a); |
5cb5a6ff LP |
230 | } |
231 | ||
8d567588 LP |
232 | static void automount_set_state(Automount *a, AutomountState state) { |
233 | AutomountState old_state; | |
e537352b | 234 | assert(a); |
034c6ed7 | 235 | |
8d567588 LP |
236 | old_state = a->state; |
237 | a->state = state; | |
238 | ||
239 | if (state != AUTOMOUNT_WAITING && | |
240 | state != AUTOMOUNT_RUNNING) | |
241 | unmount_autofs(a); | |
242 | ||
243 | if (state != old_state) | |
f2341e0a | 244 | log_unit_debug(UNIT(a), "Changed %s -> %s", automount_state_to_string(old_state), automount_state_to_string(state)); |
8d567588 | 245 | |
e2f3b44c | 246 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
247 | } |
248 | ||
be847e82 | 249 | static int automount_coldplug(Unit *u) { |
a16e1123 LP |
250 | Automount *a = AUTOMOUNT(u); |
251 | int r; | |
252 | ||
253 | assert(a); | |
254 | assert(a->state == AUTOMOUNT_DEAD); | |
255 | ||
256 | if (a->deserialized_state != a->state) { | |
257 | ||
0b2665c3 LP |
258 | r = open_dev_autofs(u->manager); |
259 | if (r < 0) | |
a16e1123 LP |
260 | return r; |
261 | ||
262 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
263 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
a16e1123 LP |
264 | assert(a->pipe_fd >= 0); |
265 | ||
151b9b96 | 266 | r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u); |
0b2665c3 | 267 | if (r < 0) |
a16e1123 | 268 | return r; |
7dfbe2e3 TG |
269 | |
270 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); | |
a16e1123 LP |
271 | } |
272 | ||
273 | automount_set_state(a, a->deserialized_state); | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
87f0e418 | 279 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
deb0a77c | 280 | char time_string[FORMAT_TIMESPAN_MAX]; |
a16e1123 | 281 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 282 | |
a16e1123 | 283 | assert(a); |
5cb5a6ff LP |
284 | |
285 | fprintf(f, | |
a16e1123 | 286 | "%sAutomount State: %s\n" |
81a5c6d0 | 287 | "%sResult: %s\n" |
1cf18f27 | 288 | "%sWhere: %s\n" |
deb0a77c MO |
289 | "%sDirectoryMode: %04o\n" |
290 | "%sTimeoutIdleUSec: %s\n", | |
a16e1123 | 291 | prefix, automount_state_to_string(a->state), |
81a5c6d0 | 292 | prefix, automount_result_to_string(a->result), |
1cf18f27 | 293 | prefix, a->where, |
deb0a77c MO |
294 | prefix, a->directory_mode, |
295 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, a->timeout_idle_usec, USEC_PER_SEC)); | |
5cb5a6ff LP |
296 | } |
297 | ||
81a5c6d0 | 298 | static void automount_enter_dead(Automount *a, AutomountResult f) { |
8d567588 LP |
299 | assert(a); |
300 | ||
81a5c6d0 LP |
301 | if (f != AUTOMOUNT_SUCCESS) |
302 | a->result = f; | |
8d567588 | 303 | |
81a5c6d0 | 304 | automount_set_state(a, a->result != AUTOMOUNT_SUCCESS ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD); |
8d567588 LP |
305 | } |
306 | ||
307 | static int open_dev_autofs(Manager *m) { | |
308 | struct autofs_dev_ioctl param; | |
309 | ||
310 | assert(m); | |
311 | ||
312 | if (m->dev_autofs_fd >= 0) | |
313 | return m->dev_autofs_fd; | |
314 | ||
c9bc0764 | 315 | label_fix("/dev/autofs", false, false); |
56cf987f | 316 | |
0b2665c3 | 317 | m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY); |
4a62c710 MS |
318 | if (m->dev_autofs_fd < 0) |
319 | return log_error_errno(errno, "Failed to open /dev/autofs: %m"); | |
8d567588 LP |
320 | |
321 | init_autofs_dev_ioctl(¶m); | |
322 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
03e334a1 | 323 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
324 | return -errno; |
325 | } | |
326 | ||
327 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
328 | ||
329 | return m->dev_autofs_fd; | |
330 | } | |
331 | ||
332 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
333 | struct autofs_dev_ioctl *param; | |
334 | size_t l; | |
8d567588 LP |
335 | |
336 | assert(dev_autofs_fd >= 0); | |
337 | assert(where); | |
338 | ||
339 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
0b2665c3 | 340 | param = alloca(l); |
8d567588 LP |
341 | |
342 | init_autofs_dev_ioctl(param); | |
343 | param->size = l; | |
344 | param->ioctlfd = -1; | |
345 | param->openmount.devid = devid; | |
346 | strcpy(param->path, where); | |
347 | ||
0b2665c3 LP |
348 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) |
349 | return -errno; | |
8d567588 | 350 | |
0b2665c3 LP |
351 | if (param->ioctlfd < 0) |
352 | return -EIO; | |
8d567588 | 353 | |
f34beace | 354 | (void) fd_cloexec(param->ioctlfd, true); |
0b2665c3 | 355 | return param->ioctlfd; |
8d567588 LP |
356 | } |
357 | ||
358 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
359 | uint32_t major, minor; | |
360 | struct autofs_dev_ioctl param; | |
361 | ||
362 | assert(dev_autofs_fd >= 0); | |
363 | assert(ioctl_fd >= 0); | |
364 | ||
365 | init_autofs_dev_ioctl(¶m); | |
366 | param.ioctlfd = ioctl_fd; | |
367 | ||
368 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
369 | return -errno; | |
370 | ||
371 | major = param.protover.version; | |
372 | ||
373 | init_autofs_dev_ioctl(¶m); | |
374 | param.ioctlfd = ioctl_fd; | |
375 | ||
376 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
377 | return -errno; | |
378 | ||
379 | minor = param.protosubver.sub_version; | |
380 | ||
381 | log_debug("Autofs protocol version %i.%i", major, minor); | |
382 | return 0; | |
383 | } | |
384 | ||
deb0a77c | 385 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, usec_t usec) { |
8d567588 LP |
386 | struct autofs_dev_ioctl param; |
387 | ||
388 | assert(dev_autofs_fd >= 0); | |
389 | assert(ioctl_fd >= 0); | |
390 | ||
391 | init_autofs_dev_ioctl(¶m); | |
392 | param.ioctlfd = ioctl_fd; | |
deb0a77c MO |
393 | |
394 | /* Convert to seconds, rounding up. */ | |
395 | param.timeout.timeout = (usec + USEC_PER_SEC - 1) / USEC_PER_SEC; | |
8d567588 LP |
396 | |
397 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
398 | return -errno; | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
404 | struct autofs_dev_ioctl param; | |
405 | ||
406 | assert(dev_autofs_fd >= 0); | |
407 | assert(ioctl_fd >= 0); | |
408 | ||
409 | init_autofs_dev_ioctl(¶m); | |
410 | param.ioctlfd = ioctl_fd; | |
411 | ||
412 | if (status) { | |
413 | param.fail.token = token; | |
414 | param.fail.status = status; | |
415 | } else | |
416 | param.ready.token = token; | |
417 | ||
418 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
419 | return -errno; | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
deb0a77c | 424 | static int automount_send_ready(Automount *a, Set *tokens, int status) { |
03e334a1 | 425 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 426 | unsigned token; |
03e334a1 | 427 | int r; |
8d567588 LP |
428 | |
429 | assert(a); | |
430 | assert(status <= 0); | |
431 | ||
deb0a77c | 432 | if (set_isempty(tokens)) |
8d567588 LP |
433 | return 0; |
434 | ||
0b2665c3 | 435 | ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); |
03e334a1 LP |
436 | if (ioctl_fd < 0) |
437 | return ioctl_fd; | |
8d567588 LP |
438 | |
439 | if (status) | |
f2341e0a | 440 | log_unit_debug_errno(UNIT(a), status, "Sending failure: %m"); |
8d567588 | 441 | else |
f2341e0a | 442 | log_unit_debug(UNIT(a), "Sending success."); |
8d567588 | 443 | |
e364ad06 LP |
444 | r = 0; |
445 | ||
8d567588 | 446 | /* Autofs thankfully does not hand out 0 as a token */ |
deb0a77c | 447 | while ((token = PTR_TO_UINT(set_steal_first(tokens)))) { |
8d567588 LP |
448 | int k; |
449 | ||
450 | /* Autofs fun fact II: | |
451 | * | |
452 | * if you pass a positive status code here, the kernel will | |
453 | * freeze! Yay! */ | |
454 | ||
0b2665c3 LP |
455 | k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd, |
456 | ioctl_fd, | |
457 | token, | |
458 | status); | |
459 | if (k < 0) | |
8d567588 LP |
460 | r = k; |
461 | } | |
462 | ||
8d567588 LP |
463 | return r; |
464 | } | |
465 | ||
3dbadf9e MO |
466 | static int automount_start_expire(Automount *a); |
467 | ||
deb0a77c | 468 | int automount_update_mount(Automount *a, MountState old_state, MountState state) { |
3dbadf9e MO |
469 | int r; |
470 | ||
deb0a77c MO |
471 | assert(a); |
472 | ||
473 | switch (state) { | |
474 | case MOUNT_MOUNTED: | |
475 | case MOUNT_REMOUNTING: | |
476 | automount_send_ready(a, a->tokens, 0); | |
3dbadf9e MO |
477 | r = automount_start_expire(a); |
478 | if (r < 0) | |
479 | log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m"); | |
deb0a77c MO |
480 | break; |
481 | case MOUNT_DEAD: | |
482 | case MOUNT_UNMOUNTING: | |
483 | case MOUNT_MOUNTING_SIGTERM: | |
484 | case MOUNT_MOUNTING_SIGKILL: | |
485 | case MOUNT_REMOUNTING_SIGTERM: | |
486 | case MOUNT_REMOUNTING_SIGKILL: | |
487 | case MOUNT_UNMOUNTING_SIGTERM: | |
488 | case MOUNT_UNMOUNTING_SIGKILL: | |
489 | case MOUNT_FAILED: | |
490 | if (old_state != state) | |
491 | automount_send_ready(a, a->tokens, -ENODEV); | |
3dbadf9e | 492 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); |
deb0a77c MO |
493 | break; |
494 | default: | |
495 | break; | |
496 | } | |
497 | ||
498 | switch (state) { | |
499 | case MOUNT_DEAD: | |
500 | automount_send_ready(a, a->expire_tokens, 0); | |
501 | break; | |
502 | case MOUNT_MOUNTING: | |
503 | case MOUNT_MOUNTING_DONE: | |
504 | case MOUNT_MOUNTING_SIGTERM: | |
505 | case MOUNT_MOUNTING_SIGKILL: | |
506 | case MOUNT_REMOUNTING_SIGTERM: | |
507 | case MOUNT_REMOUNTING_SIGKILL: | |
508 | case MOUNT_UNMOUNTING_SIGTERM: | |
509 | case MOUNT_UNMOUNTING_SIGKILL: | |
510 | case MOUNT_FAILED: | |
511 | if (old_state != state) | |
512 | automount_send_ready(a, a->expire_tokens, -ENODEV); | |
513 | break; | |
514 | default: | |
515 | break; | |
516 | } | |
517 | ||
518 | return 0; | |
519 | } | |
520 | ||
8d567588 | 521 | static void automount_enter_waiting(Automount *a) { |
03e334a1 | 522 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 523 | int p[2] = { -1, -1 }; |
5ffa8c81 ZJS |
524 | char name[sizeof("systemd-")-1 + DECIMAL_STR_MAX(pid_t) + 1]; |
525 | char options[sizeof("fd=,pgrp=,minproto=5,maxproto=5,direct")-1 | |
526 | + DECIMAL_STR_MAX(int) + DECIMAL_STR_MAX(gid_t) + 1]; | |
8d567588 | 527 | bool mounted = false; |
03e334a1 | 528 | int r, dev_autofs_fd; |
8d567588 LP |
529 | struct stat st; |
530 | ||
531 | assert(a); | |
532 | assert(a->pipe_fd < 0); | |
533 | assert(a->where); | |
534 | ||
f2341e0a LP |
535 | set_clear(a->tokens); |
536 | ||
537 | r = unit_fail_if_symlink(UNIT(a), a->where); | |
538 | if (r < 0) | |
539 | goto fail; | |
540 | ||
541 | (void) mkdir_p_label(a->where, 0555); | |
542 | ||
543 | unit_warn_if_dir_nonempty(UNIT(a), a->where); | |
8d567588 | 544 | |
0b2665c3 LP |
545 | dev_autofs_fd = open_dev_autofs(UNIT(a)->manager); |
546 | if (dev_autofs_fd < 0) { | |
8d567588 LP |
547 | r = dev_autofs_fd; |
548 | goto fail; | |
549 | } | |
550 | ||
a16e1123 | 551 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
552 | r = -errno; |
553 | goto fail; | |
554 | } | |
555 | ||
5ffa8c81 ZJS |
556 | xsprintf(options, "fd=%i,pgrp="PID_FMT",minproto=5,maxproto=5,direct", p[1], getpgrp()); |
557 | xsprintf(name, "systemd-"PID_FMT, getpid()); | |
8d567588 LP |
558 | if (mount(name, a->where, "autofs", 0, options) < 0) { |
559 | r = -errno; | |
560 | goto fail; | |
561 | } | |
562 | ||
563 | mounted = true; | |
564 | ||
03e334a1 | 565 | p[1] = safe_close(p[1]); |
8d567588 LP |
566 | |
567 | if (stat(a->where, &st) < 0) { | |
568 | r = -errno; | |
569 | goto fail; | |
570 | } | |
571 | ||
0b2665c3 LP |
572 | ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev); |
573 | if (ioctl_fd < 0) { | |
8d567588 LP |
574 | r = ioctl_fd; |
575 | goto fail; | |
576 | } | |
577 | ||
0b2665c3 LP |
578 | r = autofs_protocol(dev_autofs_fd, ioctl_fd); |
579 | if (r < 0) | |
8d567588 LP |
580 | goto fail; |
581 | ||
deb0a77c | 582 | r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, a->timeout_idle_usec); |
0b2665c3 | 583 | if (r < 0) |
8d567588 LP |
584 | goto fail; |
585 | ||
586 | /* Autofs fun fact: | |
587 | * | |
588 | * Unless we close the ioctl fd here, for some weird reason | |
589 | * the direct mount will not receive events from the | |
590 | * kernel. */ | |
591 | ||
151b9b96 | 592 | r = sd_event_add_io(UNIT(a)->manager->event, &a->pipe_event_source, p[0], EPOLLIN, automount_dispatch_io, a); |
0b2665c3 | 593 | if (r < 0) |
8d567588 LP |
594 | goto fail; |
595 | ||
7dfbe2e3 TG |
596 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); |
597 | ||
8d567588 LP |
598 | a->pipe_fd = p[0]; |
599 | a->dev_id = st.st_dev; | |
600 | ||
601 | automount_set_state(a, AUTOMOUNT_WAITING); | |
602 | ||
603 | return; | |
604 | ||
605 | fail: | |
3f2c0bec LP |
606 | log_unit_error_errno(UNIT(a), r, "Failed to initialize automounter: %m"); |
607 | ||
3d94f76c | 608 | safe_close_pair(p); |
8d567588 | 609 | |
3f2c0bec LP |
610 | if (mounted) { |
611 | r = repeat_unmount(a->where, MNT_DETACH); | |
612 | if (r < 0) | |
613 | log_error_errno(r, "Failed to unmount, ignoring: %m"); | |
614 | } | |
8d567588 | 615 | |
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 | ||
deb0a77c MO |
640 | static int automount_dispatch_expire(sd_event_source *source, usec_t usec, void *userdata) { |
641 | Automount *a = AUTOMOUNT(userdata); | |
642 | _cleanup_(expire_data_freep) struct expire_data *data = NULL; | |
643 | int r; | |
644 | ||
645 | assert(a); | |
646 | assert(source == a->expire_event_source); | |
647 | ||
648 | data = new0(struct expire_data, 1); | |
649 | if (!data) | |
650 | return log_oom(); | |
651 | ||
652 | data->ioctl_fd = -1; | |
653 | ||
654 | data->dev_autofs_fd = fcntl(UNIT(a)->manager->dev_autofs_fd, F_DUPFD_CLOEXEC, 3); | |
655 | if (data->dev_autofs_fd < 0) | |
f2341e0a | 656 | return log_unit_error_errno(UNIT(a), errno, "Failed to duplicate autofs fd: %m"); |
deb0a77c MO |
657 | |
658 | data->ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); | |
659 | if (data->ioctl_fd < 0) | |
f2341e0a | 660 | return log_unit_error_errno(UNIT(a), data->ioctl_fd, "Couldn't open autofs ioctl fd: %m"); |
deb0a77c MO |
661 | |
662 | r = asynchronous_job(expire_thread, data); | |
663 | if (r < 0) | |
f2341e0a | 664 | return log_unit_error_errno(UNIT(a), r, "Failed to start expire job: %m"); |
deb0a77c MO |
665 | |
666 | data = NULL; | |
667 | ||
668 | return automount_start_expire(a); | |
669 | } | |
670 | ||
671 | static int automount_start_expire(Automount *a) { | |
672 | int r; | |
673 | usec_t timeout; | |
674 | ||
675 | assert(a); | |
676 | ||
93a3b53b DM |
677 | if (a->timeout_idle_usec == 0) |
678 | return 0; | |
679 | ||
dbf5cc47 | 680 | timeout = now(CLOCK_MONOTONIC) + MAX(a->timeout_idle_usec/3, USEC_PER_SEC); |
deb0a77c MO |
681 | |
682 | if (a->expire_event_source) { | |
683 | r = sd_event_source_set_time(a->expire_event_source, timeout); | |
684 | if (r < 0) | |
685 | return r; | |
686 | ||
687 | return sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_ONESHOT); | |
688 | } | |
689 | ||
7dfbe2e3 | 690 | r = sd_event_add_time( |
deb0a77c MO |
691 | UNIT(a)->manager->event, |
692 | &a->expire_event_source, | |
693 | CLOCK_MONOTONIC, timeout, 0, | |
694 | automount_dispatch_expire, a); | |
7dfbe2e3 TG |
695 | if (r < 0) |
696 | return r; | |
697 | ||
698 | (void) sd_event_source_set_description(a->expire_event_source, "automount-expire"); | |
699 | ||
700 | return 0; | |
deb0a77c MO |
701 | } |
702 | ||
8d567588 | 703 | static void automount_enter_runnning(Automount *a) { |
718db961 | 704 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
3ecaa09b LP |
705 | struct stat st; |
706 | int r; | |
8d567588 LP |
707 | |
708 | assert(a); | |
8d567588 | 709 | |
ba3e67a7 LP |
710 | /* We don't take mount requests anymore if we are supposed to |
711 | * shut down anyway */ | |
31afa0a4 | 712 | if (unit_stop_pending(UNIT(a))) { |
f2341e0a | 713 | log_unit_debug(UNIT(a), "Suppressing automount request since unit stop is scheduled."); |
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) { | |
f2341e0a | 723 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); |
8d567588 LP |
724 | goto fail; |
725 | } | |
726 | ||
727 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
f2341e0a | 728 | log_unit_info(UNIT(a), "Automount point already active?"); |
3ecaa09b LP |
729 | else { |
730 | r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), | |
731 | JOB_REPLACE, true, &error, NULL); | |
732 | if (r < 0) { | |
f2341e0a | 733 | log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r)); |
3ecaa09b LP |
734 | goto fail; |
735 | } | |
8d567588 LP |
736 | } |
737 | ||
738 | automount_set_state(a, AUTOMOUNT_RUNNING); | |
739 | return; | |
740 | ||
741 | fail: | |
81a5c6d0 | 742 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
743 | } |
744 | ||
745 | static int automount_start(Unit *u) { | |
746 | Automount *a = AUTOMOUNT(u); | |
747 | ||
748 | assert(a); | |
74ac3cbd | 749 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED); |
01f78473 | 750 | |
e26d6ce5 | 751 | if (path_is_mount_point(a->where, 0) > 0) { |
f2341e0a | 752 | log_unit_error(u, "Path %s is already a mount point, refusing start.", a->where); |
8d567588 LP |
753 | return -EEXIST; |
754 | } | |
755 | ||
3ecaa09b | 756 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 757 | return -ENOENT; |
8d567588 | 758 | |
81a5c6d0 | 759 | a->result = AUTOMOUNT_SUCCESS; |
8d567588 | 760 | automount_enter_waiting(a); |
82a2b6bb | 761 | return 1; |
8d567588 LP |
762 | } |
763 | ||
764 | static int automount_stop(Unit *u) { | |
765 | Automount *a = AUTOMOUNT(u); | |
766 | ||
767 | assert(a); | |
8d567588 LP |
768 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); |
769 | ||
81a5c6d0 | 770 | automount_enter_dead(a, AUTOMOUNT_SUCCESS); |
82a2b6bb | 771 | return 1; |
8d567588 LP |
772 | } |
773 | ||
a16e1123 LP |
774 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
775 | Automount *a = AUTOMOUNT(u); | |
a16e1123 | 776 | Iterator i; |
a34ceba6 LP |
777 | void *p; |
778 | int r; | |
a16e1123 LP |
779 | |
780 | assert(a); | |
781 | assert(f); | |
782 | assert(fds); | |
783 | ||
784 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
81a5c6d0 | 785 | unit_serialize_item(u, f, "result", automount_result_to_string(a->result)); |
a16e1123 LP |
786 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); |
787 | ||
788 | SET_FOREACH(p, a->tokens, i) | |
789 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
deb0a77c MO |
790 | SET_FOREACH(p, a->expire_tokens, i) |
791 | unit_serialize_item_format(u, f, "expire-token", "%u", PTR_TO_UINT(p)); | |
a16e1123 | 792 | |
a34ceba6 LP |
793 | r = unit_serialize_item_fd(u, f, fds, "pipe-fd", a->pipe_fd); |
794 | if (r < 0) | |
795 | return r; | |
a16e1123 LP |
796 | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
801 | Automount *a = AUTOMOUNT(u); | |
802 | int r; | |
803 | ||
804 | assert(a); | |
805 | assert(fds); | |
806 | ||
807 | if (streq(key, "state")) { | |
808 | AutomountState state; | |
809 | ||
0b2665c3 LP |
810 | state = automount_state_from_string(value); |
811 | if (state < 0) | |
f2341e0a | 812 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
813 | else |
814 | a->deserialized_state = state; | |
81a5c6d0 LP |
815 | } else if (streq(key, "result")) { |
816 | AutomountResult f; | |
817 | ||
818 | f = automount_result_from_string(value); | |
819 | if (f < 0) | |
f2341e0a | 820 | log_unit_debug(u, "Failed to parse result value: %s", value); |
81a5c6d0 LP |
821 | else if (f != AUTOMOUNT_SUCCESS) |
822 | a->result = f; | |
a16e1123 | 823 | |
a16e1123 LP |
824 | } else if (streq(key, "dev-id")) { |
825 | unsigned d; | |
826 | ||
827 | if (safe_atou(value, &d) < 0) | |
f2341e0a | 828 | log_unit_debug(u, "Failed to parse dev-id value: %s", value); |
a16e1123 LP |
829 | else |
830 | a->dev_id = (unsigned) d; | |
831 | } else if (streq(key, "token")) { | |
832 | unsigned token; | |
833 | ||
834 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 835 | log_unit_debug(u, "Failed to parse token value: %s", value); |
a16e1123 | 836 | else { |
f34beace LP |
837 | r = set_ensure_allocated(&a->tokens, NULL); |
838 | if (r < 0) { | |
839 | log_oom(); | |
840 | return 0; | |
841 | } | |
a16e1123 | 842 | |
0b2665c3 LP |
843 | r = set_put(a->tokens, UINT_TO_PTR(token)); |
844 | if (r < 0) | |
f2341e0a | 845 | log_unit_error_errno(u, r, "Failed to add token to set: %m"); |
a16e1123 | 846 | } |
deb0a77c MO |
847 | } else if (streq(key, "expire-token")) { |
848 | unsigned token; | |
849 | ||
850 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 851 | log_unit_debug(u, "Failed to parse token value: %s", value); |
deb0a77c MO |
852 | else { |
853 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
854 | if (r < 0) { | |
855 | log_oom(); | |
856 | return 0; | |
857 | } | |
858 | ||
859 | r = set_put(a->expire_tokens, UINT_TO_PTR(token)); | |
860 | if (r < 0) | |
f2341e0a | 861 | log_unit_error_errno(u, r, "Failed to add expire token to set: %m"); |
deb0a77c | 862 | } |
a16e1123 LP |
863 | } else if (streq(key, "pipe-fd")) { |
864 | int fd; | |
865 | ||
866 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 867 | log_unit_debug(u, "Failed to parse pipe-fd value: %s", value); |
a16e1123 | 868 | else { |
03e334a1 | 869 | safe_close(a->pipe_fd); |
a16e1123 LP |
870 | a->pipe_fd = fdset_remove(fds, fd); |
871 | } | |
872 | } else | |
f2341e0a | 873 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
874 | |
875 | return 0; | |
876 | } | |
877 | ||
87f0e418 | 878 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 879 | assert(u); |
87f0e418 | 880 | |
e537352b | 881 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
882 | } |
883 | ||
10a94420 LP |
884 | static const char *automount_sub_state_to_string(Unit *u) { |
885 | assert(u); | |
886 | ||
a16e1123 | 887 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
888 | } |
889 | ||
701cc384 | 890 | static bool automount_check_gc(Unit *u) { |
3ecaa09b | 891 | assert(u); |
701cc384 | 892 | |
3ecaa09b | 893 | if (!UNIT_TRIGGER(u)) |
7573916f LP |
894 | return false; |
895 | ||
3ecaa09b | 896 | return UNIT_VTABLE(UNIT_TRIGGER(u))->check_gc(UNIT_TRIGGER(u)); |
701cc384 LP |
897 | } |
898 | ||
718db961 | 899 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { |
deb0a77c | 900 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
8d567588 | 901 | union autofs_v5_packet_union packet; |
718db961 | 902 | Automount *a = AUTOMOUNT(userdata); |
5f8ae398 | 903 | struct stat st; |
8d567588 LP |
904 | int r; |
905 | ||
8d567588 LP |
906 | assert(a); |
907 | assert(fd == a->pipe_fd); | |
908 | ||
909 | if (events != EPOLLIN) { | |
f2341e0a | 910 | log_unit_error(UNIT(a), "Got invalid poll event %"PRIu32" on pipe (fd=%d)", events, fd); |
8d567588 LP |
911 | goto fail; |
912 | } | |
913 | ||
a6dcc7e5 ZJS |
914 | r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); |
915 | if (r < 0) { | |
f2341e0a | 916 | log_unit_error_errno(UNIT(a), r, "Invalid read from pipe: %m"); |
8d567588 LP |
917 | goto fail; |
918 | } | |
919 | ||
920 | switch (packet.hdr.type) { | |
921 | ||
922 | case autofs_ptype_missing_direct: | |
941a4041 LP |
923 | |
924 | if (packet.v5_packet.pid > 0) { | |
e42e801b | 925 | _cleanup_free_ char *p = NULL; |
941a4041 | 926 | |
87d2c1ff | 927 | get_process_comm(packet.v5_packet.pid, &p); |
f2341e0a | 928 | log_unit_info(UNIT(a), "Got automount request for %s, triggered by %"PRIu32" (%s)", a->where, packet.v5_packet.pid, strna(p)); |
941a4041 | 929 | } else |
f2341e0a | 930 | log_unit_debug(UNIT(a), "Got direct mount request on %s", a->where); |
8d567588 | 931 | |
d5099efc | 932 | r = set_ensure_allocated(&a->tokens, NULL); |
0b2665c3 | 933 | if (r < 0) { |
f2341e0a | 934 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
0b2665c3 LP |
935 | goto fail; |
936 | } | |
a16e1123 | 937 | |
0b2665c3 LP |
938 | r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); |
939 | if (r < 0) { | |
f2341e0a | 940 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
8d567588 LP |
941 | goto fail; |
942 | } | |
943 | ||
944 | automount_enter_runnning(a); | |
945 | break; | |
946 | ||
deb0a77c | 947 | case autofs_ptype_expire_direct: |
f2341e0a | 948 | log_unit_debug(UNIT(a), "Got direct umount request on %s", a->where); |
deb0a77c MO |
949 | |
950 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); | |
951 | ||
952 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
953 | if (r < 0) { | |
f2341e0a | 954 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
deb0a77c MO |
955 | goto fail; |
956 | } | |
957 | ||
958 | r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); | |
959 | if (r < 0) { | |
f2341e0a | 960 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
deb0a77c MO |
961 | goto fail; |
962 | } | |
5f8ae398 MO |
963 | |
964 | /* Before we do anything, let's see if somebody is playing games with us? */ | |
965 | if (lstat(a->where, &st) < 0) { | |
966 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); | |
967 | goto fail; | |
968 | } | |
969 | ||
970 | if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) { | |
971 | log_unit_info(UNIT(a), "Automount point already unmounted?"); | |
972 | automount_send_ready(a, a->expire_tokens, 0); | |
973 | break; | |
974 | } | |
975 | ||
deb0a77c MO |
976 | r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); |
977 | if (r < 0) { | |
f2341e0a | 978 | log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r)); |
deb0a77c MO |
979 | goto fail; |
980 | } | |
981 | break; | |
982 | ||
8d567588 | 983 | default: |
f2341e0a | 984 | log_unit_error(UNIT(a), "Received unknown automount request %i", packet.hdr.type); |
8d567588 LP |
985 | break; |
986 | } | |
987 | ||
718db961 | 988 | return 0; |
8d567588 LP |
989 | |
990 | fail: | |
81a5c6d0 | 991 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
718db961 | 992 | return 0; |
8d567588 LP |
993 | } |
994 | ||
995 | static void automount_shutdown(Manager *m) { | |
996 | assert(m); | |
997 | ||
03e334a1 | 998 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
999 | } |
1000 | ||
74ac3cbd | 1001 | static void automount_reset_failed(Unit *u) { |
5632e374 LP |
1002 | Automount *a = AUTOMOUNT(u); |
1003 | ||
1004 | assert(a); | |
1005 | ||
74ac3cbd | 1006 | if (a->state == AUTOMOUNT_FAILED) |
5632e374 LP |
1007 | automount_set_state(a, AUTOMOUNT_DEAD); |
1008 | ||
81a5c6d0 | 1009 | a->result = AUTOMOUNT_SUCCESS; |
5632e374 LP |
1010 | } |
1011 | ||
1c2e9646 | 1012 | static bool automount_supported(void) { |
0faacd47 LP |
1013 | static int supported = -1; |
1014 | ||
0faacd47 LP |
1015 | if (supported < 0) |
1016 | supported = access("/dev/autofs", F_OK) >= 0; | |
1017 | ||
1018 | return supported; | |
1019 | } | |
1020 | ||
81a5c6d0 LP |
1021 | static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = { |
1022 | [AUTOMOUNT_SUCCESS] = "success", | |
1023 | [AUTOMOUNT_FAILURE_RESOURCES] = "resources" | |
1024 | }; | |
1025 | ||
1026 | DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult); | |
1027 | ||
87f0e418 | 1028 | const UnitVTable automount_vtable = { |
7d17cfbc | 1029 | .object_size = sizeof(Automount), |
718db961 | 1030 | |
f975e971 LP |
1031 | .sections = |
1032 | "Unit\0" | |
1033 | "Automount\0" | |
1034 | "Install\0", | |
5cb5a6ff | 1035 | |
e537352b | 1036 | .no_alias = true, |
8d567588 | 1037 | .no_instances = true, |
e537352b | 1038 | |
034c6ed7 | 1039 | .init = automount_init, |
e537352b | 1040 | .load = automount_load, |
034c6ed7 | 1041 | .done = automount_done, |
5cb5a6ff | 1042 | |
a16e1123 LP |
1043 | .coldplug = automount_coldplug, |
1044 | ||
034c6ed7 | 1045 | .dump = automount_dump, |
5cb5a6ff | 1046 | |
8d567588 LP |
1047 | .start = automount_start, |
1048 | .stop = automount_stop, | |
1049 | ||
a16e1123 LP |
1050 | .serialize = automount_serialize, |
1051 | .deserialize_item = automount_deserialize_item, | |
1052 | ||
10a94420 | 1053 | .active_state = automount_active_state, |
8d567588 LP |
1054 | .sub_state_to_string = automount_sub_state_to_string, |
1055 | ||
701cc384 LP |
1056 | .check_gc = automount_check_gc, |
1057 | ||
74ac3cbd | 1058 | .reset_failed = automount_reset_failed, |
5632e374 | 1059 | |
718db961 | 1060 | .bus_vtable = bus_automount_vtable, |
4139c1b2 | 1061 | |
c6918296 | 1062 | .shutdown = automount_shutdown, |
0faacd47 | 1063 | .supported = automount_supported, |
c6918296 MS |
1064 | |
1065 | .status_message_formats = { | |
1066 | .finished_start_job = { | |
1067 | [JOB_DONE] = "Set up automount %s.", | |
1068 | [JOB_FAILED] = "Failed to set up automount %s.", | |
c6918296 MS |
1069 | }, |
1070 | .finished_stop_job = { | |
1071 | [JOB_DONE] = "Unset automount %s.", | |
1072 | [JOB_FAILED] = "Failed to unset automount %s.", | |
1073 | }, | |
1074 | }, | |
5cb5a6ff | 1075 | }; |