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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 | 32 | #include "async.h" |
3ffd4af2 | 33 | #include "automount.h" |
07630cea LP |
34 | #include "bus-error.h" |
35 | #include "bus-util.h" | |
36 | #include "dbus-automount.h" | |
3ffd4af2 | 37 | #include "fd-util.h" |
07630cea | 38 | #include "formats-util.h" |
c004493c | 39 | #include "io-util.h" |
e51bc1a2 | 40 | #include "label.h" |
49e942b2 | 41 | #include "mkdir.h" |
07630cea | 42 | #include "mount.h" |
9eb977db | 43 | #include "path-util.h" |
0b452006 | 44 | #include "process-util.h" |
07630cea LP |
45 | #include "special.h" |
46 | #include "string-util.h" | |
47 | #include "unit-name.h" | |
48 | #include "unit.h" | |
5cb5a6ff | 49 | |
e537352b LP |
50 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
51 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
52 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
53 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
74ac3cbd | 54 | [AUTOMOUNT_FAILED] = UNIT_FAILED |
e537352b | 55 | }; |
5cb5a6ff | 56 | |
deb0a77c MO |
57 | struct expire_data { |
58 | int dev_autofs_fd; | |
59 | int ioctl_fd; | |
60 | }; | |
61 | ||
62 | static inline void expire_data_free(struct expire_data *data) { | |
63 | if (!data) | |
64 | return; | |
65 | ||
66 | safe_close(data->dev_autofs_fd); | |
67 | safe_close(data->ioctl_fd); | |
68 | free(data); | |
69 | } | |
70 | ||
71 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct expire_data*, expire_data_free); | |
72 | ||
a16e1123 | 73 | static int open_dev_autofs(Manager *m); |
718db961 | 74 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata); |
8d567588 | 75 | |
e537352b LP |
76 | static void automount_init(Unit *u) { |
77 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 78 | |
8d567588 | 79 | assert(u); |
ac155bb8 | 80 | assert(u->load_state == UNIT_STUB); |
8d567588 | 81 | |
718db961 | 82 | a->pipe_fd = -1; |
1cf18f27 | 83 | a->directory_mode = 0755; |
1124fe6f | 84 | UNIT(a)->ignore_on_isolate = true; |
8d567588 LP |
85 | } |
86 | ||
a5e41bdb | 87 | static void repeat_unmount(const char *path) { |
8d567588 LP |
88 | assert(path); |
89 | ||
90 | for (;;) { | |
1b560190 LP |
91 | /* If there are multiple mounts on a mount point, this |
92 | * removes them all */ | |
8d567588 LP |
93 | |
94 | if (umount2(path, MNT_DETACH) >= 0) | |
95 | continue; | |
96 | ||
97 | if (errno != EINVAL) | |
56f64d95 | 98 | log_error_errno(errno, "Failed to unmount: %m"); |
8d567588 LP |
99 | |
100 | break; | |
101 | } | |
102 | } | |
103 | ||
deb0a77c MO |
104 | static int automount_send_ready(Automount *a, Set *tokens, int status); |
105 | ||
8d567588 LP |
106 | static void unmount_autofs(Automount *a) { |
107 | assert(a); | |
108 | ||
109 | if (a->pipe_fd < 0) | |
110 | return; | |
111 | ||
deb0a77c MO |
112 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
113 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
8d567588 | 114 | |
718db961 | 115 | a->pipe_event_source = sd_event_source_unref(a->pipe_event_source); |
03e334a1 | 116 | a->pipe_fd = safe_close(a->pipe_fd); |
8d567588 | 117 | |
a16e1123 LP |
118 | /* If we reload/reexecute things we keep the mount point |
119 | * around */ | |
120 | if (a->where && | |
1124fe6f MS |
121 | (UNIT(a)->manager->exit_code != MANAGER_RELOAD && |
122 | UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) | |
a5e41bdb | 123 | repeat_unmount(a->where); |
8d567588 LP |
124 | } |
125 | ||
126 | static void automount_done(Unit *u) { | |
127 | Automount *a = AUTOMOUNT(u); | |
128 | ||
129 | assert(a); | |
130 | ||
131 | unmount_autofs(a); | |
8d567588 | 132 | |
a1e58e8e | 133 | a->where = mfree(a->where); |
a16e1123 | 134 | |
525d3cc7 LP |
135 | a->tokens = set_free(a->tokens); |
136 | a->expire_tokens = set_free(a->expire_tokens); | |
deb0a77c MO |
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 | ||
b2c23da8 | 159 | if (UNIT(a)->manager->running_as != MANAGER_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 | 169 | static int automount_verify(Automount *a) { |
e1d75803 | 170 | _cleanup_free_ char *e = NULL; |
7410616c LP |
171 | int r; |
172 | ||
8d567588 LP |
173 | assert(a); |
174 | ||
1124fe6f | 175 | if (UNIT(a)->load_state != UNIT_LOADED) |
8d567588 LP |
176 | return 0; |
177 | ||
41e45059 | 178 | if (path_equal(a->where, "/")) { |
f2341e0a | 179 | log_unit_error(UNIT(a), "Cannot have an automount unit for the root directory. Refusing."); |
41e45059 LP |
180 | return -EINVAL; |
181 | } | |
182 | ||
7410616c LP |
183 | r = unit_name_from_path(a->where, ".automount", &e); |
184 | if (r < 0) | |
f2341e0a | 185 | return log_unit_error(UNIT(a), "Failed to generate unit name from path: %m"); |
8d567588 | 186 | |
7410616c | 187 | if (!unit_has_name(UNIT(a), e)) { |
f2341e0a | 188 | log_unit_error(UNIT(a), "Where= setting doesn't match unit name. Refusing."); |
8d567588 LP |
189 | return -EINVAL; |
190 | } | |
191 | ||
192 | return 0; | |
e537352b | 193 | } |
5cb5a6ff | 194 | |
e537352b | 195 | static int automount_load(Unit *u) { |
e537352b | 196 | Automount *a = AUTOMOUNT(u); |
3ecaa09b | 197 | int r; |
23a177ef | 198 | |
e537352b | 199 | assert(u); |
ac155bb8 | 200 | assert(u->load_state == UNIT_STUB); |
5cb5a6ff | 201 | |
e537352b | 202 | /* Load a .automount file */ |
0b2665c3 LP |
203 | r = unit_load_fragment_and_dropin_optional(u); |
204 | if (r < 0) | |
e537352b | 205 | return r; |
23a177ef | 206 | |
ac155bb8 | 207 | if (u->load_state == UNIT_LOADED) { |
57020a3a | 208 | Unit *x; |
23a177ef | 209 | |
0b2665c3 | 210 | if (!a->where) { |
7410616c LP |
211 | r = unit_name_to_path(u->id, &a->where); |
212 | if (r < 0) | |
213 | return r; | |
0b2665c3 | 214 | } |
a16e1123 LP |
215 | |
216 | path_kill_slashes(a->where); | |
217 | ||
3ecaa09b | 218 | r = unit_load_related_unit(u, ".mount", &x); |
0b2665c3 | 219 | if (r < 0) |
6e2ef85b LP |
220 | return r; |
221 | ||
3ecaa09b | 222 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true); |
57020a3a | 223 | if (r < 0) |
23a177ef LP |
224 | return r; |
225 | ||
3ecaa09b | 226 | r = automount_add_mount_links(a); |
57020a3a | 227 | if (r < 0) |
23a177ef | 228 | return r; |
4e67ddd6 | 229 | |
0b2665c3 LP |
230 | if (UNIT(a)->default_dependencies) { |
231 | r = automount_add_default_dependencies(a); | |
232 | if (r < 0) | |
4e67ddd6 | 233 | return r; |
0b2665c3 | 234 | } |
23a177ef LP |
235 | } |
236 | ||
8d567588 | 237 | return automount_verify(a); |
5cb5a6ff LP |
238 | } |
239 | ||
8d567588 LP |
240 | static void automount_set_state(Automount *a, AutomountState state) { |
241 | AutomountState old_state; | |
e537352b | 242 | assert(a); |
034c6ed7 | 243 | |
8d567588 LP |
244 | old_state = a->state; |
245 | a->state = state; | |
246 | ||
247 | if (state != AUTOMOUNT_WAITING && | |
248 | state != AUTOMOUNT_RUNNING) | |
249 | unmount_autofs(a); | |
250 | ||
251 | if (state != old_state) | |
f2341e0a | 252 | log_unit_debug(UNIT(a), "Changed %s -> %s", automount_state_to_string(old_state), automount_state_to_string(state)); |
8d567588 | 253 | |
e2f3b44c | 254 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
255 | } |
256 | ||
be847e82 | 257 | static int automount_coldplug(Unit *u) { |
a16e1123 LP |
258 | Automount *a = AUTOMOUNT(u); |
259 | int r; | |
260 | ||
261 | assert(a); | |
262 | assert(a->state == AUTOMOUNT_DEAD); | |
263 | ||
264 | if (a->deserialized_state != a->state) { | |
265 | ||
0b2665c3 LP |
266 | r = open_dev_autofs(u->manager); |
267 | if (r < 0) | |
a16e1123 LP |
268 | return r; |
269 | ||
270 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
271 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
a16e1123 LP |
272 | assert(a->pipe_fd >= 0); |
273 | ||
151b9b96 | 274 | r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u); |
0b2665c3 | 275 | if (r < 0) |
a16e1123 | 276 | return r; |
7dfbe2e3 TG |
277 | |
278 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); | |
a16e1123 LP |
279 | } |
280 | ||
281 | automount_set_state(a, a->deserialized_state); | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
87f0e418 | 287 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
deb0a77c | 288 | char time_string[FORMAT_TIMESPAN_MAX]; |
a16e1123 | 289 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 290 | |
a16e1123 | 291 | assert(a); |
5cb5a6ff LP |
292 | |
293 | fprintf(f, | |
a16e1123 | 294 | "%sAutomount State: %s\n" |
81a5c6d0 | 295 | "%sResult: %s\n" |
1cf18f27 | 296 | "%sWhere: %s\n" |
deb0a77c MO |
297 | "%sDirectoryMode: %04o\n" |
298 | "%sTimeoutIdleUSec: %s\n", | |
a16e1123 | 299 | prefix, automount_state_to_string(a->state), |
81a5c6d0 | 300 | prefix, automount_result_to_string(a->result), |
1cf18f27 | 301 | prefix, a->where, |
deb0a77c MO |
302 | prefix, a->directory_mode, |
303 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, a->timeout_idle_usec, USEC_PER_SEC)); | |
5cb5a6ff LP |
304 | } |
305 | ||
81a5c6d0 | 306 | static void automount_enter_dead(Automount *a, AutomountResult f) { |
8d567588 LP |
307 | assert(a); |
308 | ||
81a5c6d0 LP |
309 | if (f != AUTOMOUNT_SUCCESS) |
310 | a->result = f; | |
8d567588 | 311 | |
81a5c6d0 | 312 | automount_set_state(a, a->result != AUTOMOUNT_SUCCESS ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD); |
8d567588 LP |
313 | } |
314 | ||
315 | static int open_dev_autofs(Manager *m) { | |
316 | struct autofs_dev_ioctl param; | |
317 | ||
318 | assert(m); | |
319 | ||
320 | if (m->dev_autofs_fd >= 0) | |
321 | return m->dev_autofs_fd; | |
322 | ||
c9bc0764 | 323 | label_fix("/dev/autofs", false, false); |
56cf987f | 324 | |
0b2665c3 | 325 | m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY); |
4a62c710 MS |
326 | if (m->dev_autofs_fd < 0) |
327 | return log_error_errno(errno, "Failed to open /dev/autofs: %m"); | |
8d567588 LP |
328 | |
329 | init_autofs_dev_ioctl(¶m); | |
330 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
03e334a1 | 331 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
332 | return -errno; |
333 | } | |
334 | ||
335 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
336 | ||
337 | return m->dev_autofs_fd; | |
338 | } | |
339 | ||
340 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
341 | struct autofs_dev_ioctl *param; | |
342 | size_t l; | |
8d567588 LP |
343 | |
344 | assert(dev_autofs_fd >= 0); | |
345 | assert(where); | |
346 | ||
347 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
0b2665c3 | 348 | param = alloca(l); |
8d567588 LP |
349 | |
350 | init_autofs_dev_ioctl(param); | |
351 | param->size = l; | |
352 | param->ioctlfd = -1; | |
353 | param->openmount.devid = devid; | |
354 | strcpy(param->path, where); | |
355 | ||
0b2665c3 LP |
356 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) |
357 | return -errno; | |
8d567588 | 358 | |
0b2665c3 LP |
359 | if (param->ioctlfd < 0) |
360 | return -EIO; | |
8d567588 | 361 | |
f34beace | 362 | (void) fd_cloexec(param->ioctlfd, true); |
0b2665c3 | 363 | return param->ioctlfd; |
8d567588 LP |
364 | } |
365 | ||
366 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
367 | uint32_t major, minor; | |
368 | struct autofs_dev_ioctl param; | |
369 | ||
370 | assert(dev_autofs_fd >= 0); | |
371 | assert(ioctl_fd >= 0); | |
372 | ||
373 | init_autofs_dev_ioctl(¶m); | |
374 | param.ioctlfd = ioctl_fd; | |
375 | ||
376 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
377 | return -errno; | |
378 | ||
379 | major = param.protover.version; | |
380 | ||
381 | init_autofs_dev_ioctl(¶m); | |
382 | param.ioctlfd = ioctl_fd; | |
383 | ||
384 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
385 | return -errno; | |
386 | ||
387 | minor = param.protosubver.sub_version; | |
388 | ||
389 | log_debug("Autofs protocol version %i.%i", major, minor); | |
390 | return 0; | |
391 | } | |
392 | ||
deb0a77c | 393 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, usec_t usec) { |
8d567588 LP |
394 | struct autofs_dev_ioctl param; |
395 | ||
396 | assert(dev_autofs_fd >= 0); | |
397 | assert(ioctl_fd >= 0); | |
398 | ||
399 | init_autofs_dev_ioctl(¶m); | |
400 | param.ioctlfd = ioctl_fd; | |
deb0a77c MO |
401 | |
402 | /* Convert to seconds, rounding up. */ | |
403 | param.timeout.timeout = (usec + USEC_PER_SEC - 1) / USEC_PER_SEC; | |
8d567588 LP |
404 | |
405 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
406 | return -errno; | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
412 | struct autofs_dev_ioctl param; | |
413 | ||
414 | assert(dev_autofs_fd >= 0); | |
415 | assert(ioctl_fd >= 0); | |
416 | ||
417 | init_autofs_dev_ioctl(¶m); | |
418 | param.ioctlfd = ioctl_fd; | |
419 | ||
420 | if (status) { | |
421 | param.fail.token = token; | |
422 | param.fail.status = status; | |
423 | } else | |
424 | param.ready.token = token; | |
425 | ||
426 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
427 | return -errno; | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
deb0a77c | 432 | static int automount_send_ready(Automount *a, Set *tokens, int status) { |
03e334a1 | 433 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 434 | unsigned token; |
03e334a1 | 435 | int r; |
8d567588 LP |
436 | |
437 | assert(a); | |
438 | assert(status <= 0); | |
439 | ||
deb0a77c | 440 | if (set_isempty(tokens)) |
8d567588 LP |
441 | return 0; |
442 | ||
0b2665c3 | 443 | ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); |
03e334a1 LP |
444 | if (ioctl_fd < 0) |
445 | return ioctl_fd; | |
8d567588 LP |
446 | |
447 | if (status) | |
f2341e0a | 448 | log_unit_debug_errno(UNIT(a), status, "Sending failure: %m"); |
8d567588 | 449 | else |
f2341e0a | 450 | log_unit_debug(UNIT(a), "Sending success."); |
8d567588 | 451 | |
e364ad06 LP |
452 | r = 0; |
453 | ||
8d567588 | 454 | /* Autofs thankfully does not hand out 0 as a token */ |
deb0a77c | 455 | while ((token = PTR_TO_UINT(set_steal_first(tokens)))) { |
8d567588 LP |
456 | int k; |
457 | ||
458 | /* Autofs fun fact II: | |
459 | * | |
460 | * if you pass a positive status code here, the kernel will | |
461 | * freeze! Yay! */ | |
462 | ||
0b2665c3 LP |
463 | k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd, |
464 | ioctl_fd, | |
465 | token, | |
466 | status); | |
467 | if (k < 0) | |
8d567588 LP |
468 | r = k; |
469 | } | |
470 | ||
8d567588 LP |
471 | return r; |
472 | } | |
473 | ||
3dbadf9e MO |
474 | static int automount_start_expire(Automount *a); |
475 | ||
deb0a77c | 476 | int automount_update_mount(Automount *a, MountState old_state, MountState state) { |
3dbadf9e MO |
477 | int r; |
478 | ||
deb0a77c MO |
479 | assert(a); |
480 | ||
481 | switch (state) { | |
482 | case MOUNT_MOUNTED: | |
483 | case MOUNT_REMOUNTING: | |
484 | automount_send_ready(a, a->tokens, 0); | |
3dbadf9e MO |
485 | r = automount_start_expire(a); |
486 | if (r < 0) | |
487 | log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m"); | |
deb0a77c MO |
488 | break; |
489 | case MOUNT_DEAD: | |
490 | case MOUNT_UNMOUNTING: | |
491 | case MOUNT_MOUNTING_SIGTERM: | |
492 | case MOUNT_MOUNTING_SIGKILL: | |
493 | case MOUNT_REMOUNTING_SIGTERM: | |
494 | case MOUNT_REMOUNTING_SIGKILL: | |
495 | case MOUNT_UNMOUNTING_SIGTERM: | |
496 | case MOUNT_UNMOUNTING_SIGKILL: | |
497 | case MOUNT_FAILED: | |
498 | if (old_state != state) | |
499 | automount_send_ready(a, a->tokens, -ENODEV); | |
3dbadf9e | 500 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); |
deb0a77c MO |
501 | break; |
502 | default: | |
503 | break; | |
504 | } | |
505 | ||
506 | switch (state) { | |
507 | case MOUNT_DEAD: | |
508 | automount_send_ready(a, a->expire_tokens, 0); | |
509 | break; | |
510 | case MOUNT_MOUNTING: | |
511 | case MOUNT_MOUNTING_DONE: | |
512 | case MOUNT_MOUNTING_SIGTERM: | |
513 | case MOUNT_MOUNTING_SIGKILL: | |
514 | case MOUNT_REMOUNTING_SIGTERM: | |
515 | case MOUNT_REMOUNTING_SIGKILL: | |
516 | case MOUNT_UNMOUNTING_SIGTERM: | |
517 | case MOUNT_UNMOUNTING_SIGKILL: | |
518 | case MOUNT_FAILED: | |
519 | if (old_state != state) | |
520 | automount_send_ready(a, a->expire_tokens, -ENODEV); | |
521 | break; | |
522 | default: | |
523 | break; | |
524 | } | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
8d567588 | 529 | static void automount_enter_waiting(Automount *a) { |
03e334a1 | 530 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 531 | int p[2] = { -1, -1 }; |
5ffa8c81 ZJS |
532 | char name[sizeof("systemd-")-1 + DECIMAL_STR_MAX(pid_t) + 1]; |
533 | char options[sizeof("fd=,pgrp=,minproto=5,maxproto=5,direct")-1 | |
534 | + DECIMAL_STR_MAX(int) + DECIMAL_STR_MAX(gid_t) + 1]; | |
8d567588 | 535 | bool mounted = false; |
03e334a1 | 536 | int r, dev_autofs_fd; |
8d567588 LP |
537 | struct stat st; |
538 | ||
539 | assert(a); | |
540 | assert(a->pipe_fd < 0); | |
541 | assert(a->where); | |
542 | ||
f2341e0a LP |
543 | set_clear(a->tokens); |
544 | ||
545 | r = unit_fail_if_symlink(UNIT(a), a->where); | |
546 | if (r < 0) | |
547 | goto fail; | |
548 | ||
549 | (void) mkdir_p_label(a->where, 0555); | |
550 | ||
551 | unit_warn_if_dir_nonempty(UNIT(a), a->where); | |
8d567588 | 552 | |
0b2665c3 LP |
553 | dev_autofs_fd = open_dev_autofs(UNIT(a)->manager); |
554 | if (dev_autofs_fd < 0) { | |
8d567588 LP |
555 | r = dev_autofs_fd; |
556 | goto fail; | |
557 | } | |
558 | ||
a16e1123 | 559 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
560 | r = -errno; |
561 | goto fail; | |
562 | } | |
563 | ||
5ffa8c81 ZJS |
564 | xsprintf(options, "fd=%i,pgrp="PID_FMT",minproto=5,maxproto=5,direct", p[1], getpgrp()); |
565 | xsprintf(name, "systemd-"PID_FMT, getpid()); | |
8d567588 LP |
566 | if (mount(name, a->where, "autofs", 0, options) < 0) { |
567 | r = -errno; | |
568 | goto fail; | |
569 | } | |
570 | ||
571 | mounted = true; | |
572 | ||
03e334a1 | 573 | p[1] = safe_close(p[1]); |
8d567588 LP |
574 | |
575 | if (stat(a->where, &st) < 0) { | |
576 | r = -errno; | |
577 | goto fail; | |
578 | } | |
579 | ||
0b2665c3 LP |
580 | ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev); |
581 | if (ioctl_fd < 0) { | |
8d567588 LP |
582 | r = ioctl_fd; |
583 | goto fail; | |
584 | } | |
585 | ||
0b2665c3 LP |
586 | r = autofs_protocol(dev_autofs_fd, ioctl_fd); |
587 | if (r < 0) | |
8d567588 LP |
588 | goto fail; |
589 | ||
deb0a77c | 590 | r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, a->timeout_idle_usec); |
0b2665c3 | 591 | if (r < 0) |
8d567588 LP |
592 | goto fail; |
593 | ||
594 | /* Autofs fun fact: | |
595 | * | |
596 | * Unless we close the ioctl fd here, for some weird reason | |
597 | * the direct mount will not receive events from the | |
598 | * kernel. */ | |
599 | ||
151b9b96 | 600 | r = sd_event_add_io(UNIT(a)->manager->event, &a->pipe_event_source, p[0], EPOLLIN, automount_dispatch_io, a); |
0b2665c3 | 601 | if (r < 0) |
8d567588 LP |
602 | goto fail; |
603 | ||
7dfbe2e3 TG |
604 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); |
605 | ||
8d567588 LP |
606 | a->pipe_fd = p[0]; |
607 | a->dev_id = st.st_dev; | |
608 | ||
609 | automount_set_state(a, AUTOMOUNT_WAITING); | |
610 | ||
611 | return; | |
612 | ||
613 | fail: | |
3d94f76c | 614 | safe_close_pair(p); |
8d567588 LP |
615 | |
616 | if (mounted) | |
a5e41bdb | 617 | repeat_unmount(a->where); |
8d567588 | 618 | |
f2341e0a | 619 | log_unit_error_errno(UNIT(a), r, "Failed to initialize automounter: %m"); |
81a5c6d0 | 620 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
621 | } |
622 | ||
deb0a77c MO |
623 | static void *expire_thread(void *p) { |
624 | struct autofs_dev_ioctl param; | |
625 | _cleanup_(expire_data_freep) struct expire_data *data = (struct expire_data*)p; | |
626 | int r; | |
627 | ||
628 | assert(data->dev_autofs_fd >= 0); | |
629 | assert(data->ioctl_fd >= 0); | |
630 | ||
631 | init_autofs_dev_ioctl(¶m); | |
632 | param.ioctlfd = data->ioctl_fd; | |
633 | ||
634 | do { | |
635 | r = ioctl(data->dev_autofs_fd, AUTOFS_DEV_IOCTL_EXPIRE, ¶m); | |
636 | } while (r >= 0); | |
637 | ||
638 | if (errno != EAGAIN) | |
639 | log_warning_errno(errno, "Failed to expire automount, ignoring: %m"); | |
640 | ||
641 | return NULL; | |
642 | } | |
643 | ||
deb0a77c MO |
644 | static int automount_dispatch_expire(sd_event_source *source, usec_t usec, void *userdata) { |
645 | Automount *a = AUTOMOUNT(userdata); | |
646 | _cleanup_(expire_data_freep) struct expire_data *data = NULL; | |
647 | int r; | |
648 | ||
649 | assert(a); | |
650 | assert(source == a->expire_event_source); | |
651 | ||
652 | data = new0(struct expire_data, 1); | |
653 | if (!data) | |
654 | return log_oom(); | |
655 | ||
656 | data->ioctl_fd = -1; | |
657 | ||
658 | data->dev_autofs_fd = fcntl(UNIT(a)->manager->dev_autofs_fd, F_DUPFD_CLOEXEC, 3); | |
659 | if (data->dev_autofs_fd < 0) | |
f2341e0a | 660 | return log_unit_error_errno(UNIT(a), errno, "Failed to duplicate autofs fd: %m"); |
deb0a77c MO |
661 | |
662 | data->ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); | |
663 | if (data->ioctl_fd < 0) | |
f2341e0a | 664 | return log_unit_error_errno(UNIT(a), data->ioctl_fd, "Couldn't open autofs ioctl fd: %m"); |
deb0a77c MO |
665 | |
666 | r = asynchronous_job(expire_thread, data); | |
667 | if (r < 0) | |
f2341e0a | 668 | return log_unit_error_errno(UNIT(a), r, "Failed to start expire job: %m"); |
deb0a77c MO |
669 | |
670 | data = NULL; | |
671 | ||
672 | return automount_start_expire(a); | |
673 | } | |
674 | ||
675 | static int automount_start_expire(Automount *a) { | |
676 | int r; | |
677 | usec_t timeout; | |
678 | ||
679 | assert(a); | |
680 | ||
93a3b53b DM |
681 | if (a->timeout_idle_usec == 0) |
682 | return 0; | |
683 | ||
dbf5cc47 | 684 | timeout = now(CLOCK_MONOTONIC) + MAX(a->timeout_idle_usec/3, USEC_PER_SEC); |
deb0a77c MO |
685 | |
686 | if (a->expire_event_source) { | |
687 | r = sd_event_source_set_time(a->expire_event_source, timeout); | |
688 | if (r < 0) | |
689 | return r; | |
690 | ||
691 | return sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_ONESHOT); | |
692 | } | |
693 | ||
7dfbe2e3 | 694 | r = sd_event_add_time( |
deb0a77c MO |
695 | UNIT(a)->manager->event, |
696 | &a->expire_event_source, | |
697 | CLOCK_MONOTONIC, timeout, 0, | |
698 | automount_dispatch_expire, a); | |
7dfbe2e3 TG |
699 | if (r < 0) |
700 | return r; | |
701 | ||
702 | (void) sd_event_source_set_description(a->expire_event_source, "automount-expire"); | |
703 | ||
704 | return 0; | |
deb0a77c MO |
705 | } |
706 | ||
8d567588 | 707 | static void automount_enter_runnning(Automount *a) { |
718db961 | 708 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
3ecaa09b LP |
709 | struct stat st; |
710 | int r; | |
8d567588 LP |
711 | |
712 | assert(a); | |
8d567588 | 713 | |
ba3e67a7 LP |
714 | /* We don't take mount requests anymore if we are supposed to |
715 | * shut down anyway */ | |
31afa0a4 | 716 | if (unit_stop_pending(UNIT(a))) { |
f2341e0a | 717 | log_unit_debug(UNIT(a), "Suppressing automount request since unit stop is scheduled."); |
deb0a77c MO |
718 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
719 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
ba3e67a7 LP |
720 | return; |
721 | } | |
722 | ||
d2e54fae | 723 | mkdir_p_label(a->where, a->directory_mode); |
8d567588 | 724 | |
1cf18f27 LP |
725 | /* Before we do anything, let's see if somebody is playing games with us? */ |
726 | if (lstat(a->where, &st) < 0) { | |
f2341e0a | 727 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); |
8d567588 LP |
728 | goto fail; |
729 | } | |
730 | ||
731 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
f2341e0a | 732 | log_unit_info(UNIT(a), "Automount point already active?"); |
3ecaa09b LP |
733 | else { |
734 | r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), | |
735 | JOB_REPLACE, true, &error, NULL); | |
736 | if (r < 0) { | |
f2341e0a | 737 | log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r)); |
3ecaa09b LP |
738 | goto fail; |
739 | } | |
8d567588 LP |
740 | } |
741 | ||
742 | automount_set_state(a, AUTOMOUNT_RUNNING); | |
743 | return; | |
744 | ||
745 | fail: | |
81a5c6d0 | 746 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
747 | } |
748 | ||
749 | static int automount_start(Unit *u) { | |
750 | Automount *a = AUTOMOUNT(u); | |
751 | ||
752 | assert(a); | |
74ac3cbd | 753 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED); |
01f78473 | 754 | |
e26d6ce5 | 755 | if (path_is_mount_point(a->where, 0) > 0) { |
f2341e0a | 756 | log_unit_error(u, "Path %s is already a mount point, refusing start.", a->where); |
8d567588 LP |
757 | return -EEXIST; |
758 | } | |
759 | ||
3ecaa09b | 760 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 761 | return -ENOENT; |
8d567588 | 762 | |
81a5c6d0 | 763 | a->result = AUTOMOUNT_SUCCESS; |
8d567588 | 764 | automount_enter_waiting(a); |
82a2b6bb | 765 | return 1; |
8d567588 LP |
766 | } |
767 | ||
768 | static int automount_stop(Unit *u) { | |
769 | Automount *a = AUTOMOUNT(u); | |
770 | ||
771 | assert(a); | |
8d567588 LP |
772 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); |
773 | ||
81a5c6d0 | 774 | automount_enter_dead(a, AUTOMOUNT_SUCCESS); |
82a2b6bb | 775 | return 1; |
8d567588 LP |
776 | } |
777 | ||
a16e1123 LP |
778 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
779 | Automount *a = AUTOMOUNT(u); | |
a16e1123 | 780 | Iterator i; |
a34ceba6 LP |
781 | void *p; |
782 | int r; | |
a16e1123 LP |
783 | |
784 | assert(a); | |
785 | assert(f); | |
786 | assert(fds); | |
787 | ||
788 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
81a5c6d0 | 789 | unit_serialize_item(u, f, "result", automount_result_to_string(a->result)); |
a16e1123 LP |
790 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); |
791 | ||
792 | SET_FOREACH(p, a->tokens, i) | |
793 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
deb0a77c MO |
794 | SET_FOREACH(p, a->expire_tokens, i) |
795 | unit_serialize_item_format(u, f, "expire-token", "%u", PTR_TO_UINT(p)); | |
a16e1123 | 796 | |
a34ceba6 LP |
797 | r = unit_serialize_item_fd(u, f, fds, "pipe-fd", a->pipe_fd); |
798 | if (r < 0) | |
799 | return r; | |
a16e1123 LP |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
804 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
805 | Automount *a = AUTOMOUNT(u); | |
806 | int r; | |
807 | ||
808 | assert(a); | |
809 | assert(fds); | |
810 | ||
811 | if (streq(key, "state")) { | |
812 | AutomountState state; | |
813 | ||
0b2665c3 LP |
814 | state = automount_state_from_string(value); |
815 | if (state < 0) | |
f2341e0a | 816 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
817 | else |
818 | a->deserialized_state = state; | |
81a5c6d0 LP |
819 | } else if (streq(key, "result")) { |
820 | AutomountResult f; | |
821 | ||
822 | f = automount_result_from_string(value); | |
823 | if (f < 0) | |
f2341e0a | 824 | log_unit_debug(u, "Failed to parse result value: %s", value); |
81a5c6d0 LP |
825 | else if (f != AUTOMOUNT_SUCCESS) |
826 | a->result = f; | |
a16e1123 | 827 | |
a16e1123 LP |
828 | } else if (streq(key, "dev-id")) { |
829 | unsigned d; | |
830 | ||
831 | if (safe_atou(value, &d) < 0) | |
f2341e0a | 832 | log_unit_debug(u, "Failed to parse dev-id value: %s", value); |
a16e1123 LP |
833 | else |
834 | a->dev_id = (unsigned) d; | |
835 | } else if (streq(key, "token")) { | |
836 | unsigned token; | |
837 | ||
838 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 839 | log_unit_debug(u, "Failed to parse token value: %s", value); |
a16e1123 | 840 | else { |
f34beace LP |
841 | r = set_ensure_allocated(&a->tokens, NULL); |
842 | if (r < 0) { | |
843 | log_oom(); | |
844 | return 0; | |
845 | } | |
a16e1123 | 846 | |
0b2665c3 LP |
847 | r = set_put(a->tokens, UINT_TO_PTR(token)); |
848 | if (r < 0) | |
f2341e0a | 849 | log_unit_error_errno(u, r, "Failed to add token to set: %m"); |
a16e1123 | 850 | } |
deb0a77c MO |
851 | } else if (streq(key, "expire-token")) { |
852 | unsigned token; | |
853 | ||
854 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 855 | log_unit_debug(u, "Failed to parse token value: %s", value); |
deb0a77c MO |
856 | else { |
857 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
858 | if (r < 0) { | |
859 | log_oom(); | |
860 | return 0; | |
861 | } | |
862 | ||
863 | r = set_put(a->expire_tokens, UINT_TO_PTR(token)); | |
864 | if (r < 0) | |
f2341e0a | 865 | log_unit_error_errno(u, r, "Failed to add expire token to set: %m"); |
deb0a77c | 866 | } |
a16e1123 LP |
867 | } else if (streq(key, "pipe-fd")) { |
868 | int fd; | |
869 | ||
870 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 871 | log_unit_debug(u, "Failed to parse pipe-fd value: %s", value); |
a16e1123 | 872 | else { |
03e334a1 | 873 | safe_close(a->pipe_fd); |
a16e1123 LP |
874 | a->pipe_fd = fdset_remove(fds, fd); |
875 | } | |
876 | } else | |
f2341e0a | 877 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
878 | |
879 | return 0; | |
880 | } | |
881 | ||
87f0e418 | 882 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 883 | assert(u); |
87f0e418 | 884 | |
e537352b | 885 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
886 | } |
887 | ||
10a94420 LP |
888 | static const char *automount_sub_state_to_string(Unit *u) { |
889 | assert(u); | |
890 | ||
a16e1123 | 891 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
892 | } |
893 | ||
701cc384 | 894 | static bool automount_check_gc(Unit *u) { |
3ecaa09b | 895 | assert(u); |
701cc384 | 896 | |
3ecaa09b | 897 | if (!UNIT_TRIGGER(u)) |
7573916f LP |
898 | return false; |
899 | ||
3ecaa09b | 900 | return UNIT_VTABLE(UNIT_TRIGGER(u))->check_gc(UNIT_TRIGGER(u)); |
701cc384 LP |
901 | } |
902 | ||
718db961 | 903 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { |
deb0a77c | 904 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
8d567588 | 905 | union autofs_v5_packet_union packet; |
718db961 | 906 | Automount *a = AUTOMOUNT(userdata); |
5f8ae398 | 907 | struct stat st; |
8d567588 LP |
908 | int r; |
909 | ||
8d567588 LP |
910 | assert(a); |
911 | assert(fd == a->pipe_fd); | |
912 | ||
913 | if (events != EPOLLIN) { | |
f2341e0a | 914 | log_unit_error(UNIT(a), "Got invalid poll event %"PRIu32" on pipe (fd=%d)", events, fd); |
8d567588 LP |
915 | goto fail; |
916 | } | |
917 | ||
a6dcc7e5 ZJS |
918 | r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); |
919 | if (r < 0) { | |
f2341e0a | 920 | log_unit_error_errno(UNIT(a), r, "Invalid read from pipe: %m"); |
8d567588 LP |
921 | goto fail; |
922 | } | |
923 | ||
924 | switch (packet.hdr.type) { | |
925 | ||
926 | case autofs_ptype_missing_direct: | |
941a4041 LP |
927 | |
928 | if (packet.v5_packet.pid > 0) { | |
e42e801b | 929 | _cleanup_free_ char *p = NULL; |
941a4041 | 930 | |
87d2c1ff | 931 | get_process_comm(packet.v5_packet.pid, &p); |
f2341e0a | 932 | log_unit_info(UNIT(a), "Got automount request for %s, triggered by %"PRIu32" (%s)", a->where, packet.v5_packet.pid, strna(p)); |
941a4041 | 933 | } else |
f2341e0a | 934 | log_unit_debug(UNIT(a), "Got direct mount request on %s", a->where); |
8d567588 | 935 | |
d5099efc | 936 | r = set_ensure_allocated(&a->tokens, NULL); |
0b2665c3 | 937 | if (r < 0) { |
f2341e0a | 938 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
0b2665c3 LP |
939 | goto fail; |
940 | } | |
a16e1123 | 941 | |
0b2665c3 LP |
942 | r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); |
943 | if (r < 0) { | |
f2341e0a | 944 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
8d567588 LP |
945 | goto fail; |
946 | } | |
947 | ||
948 | automount_enter_runnning(a); | |
949 | break; | |
950 | ||
deb0a77c | 951 | case autofs_ptype_expire_direct: |
f2341e0a | 952 | log_unit_debug(UNIT(a), "Got direct umount request on %s", a->where); |
deb0a77c MO |
953 | |
954 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); | |
955 | ||
956 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
957 | if (r < 0) { | |
f2341e0a | 958 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
deb0a77c MO |
959 | goto fail; |
960 | } | |
961 | ||
962 | r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); | |
963 | if (r < 0) { | |
f2341e0a | 964 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
deb0a77c MO |
965 | goto fail; |
966 | } | |
5f8ae398 MO |
967 | |
968 | /* Before we do anything, let's see if somebody is playing games with us? */ | |
969 | if (lstat(a->where, &st) < 0) { | |
970 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); | |
971 | goto fail; | |
972 | } | |
973 | ||
974 | if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) { | |
975 | log_unit_info(UNIT(a), "Automount point already unmounted?"); | |
976 | automount_send_ready(a, a->expire_tokens, 0); | |
977 | break; | |
978 | } | |
979 | ||
deb0a77c MO |
980 | r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); |
981 | if (r < 0) { | |
f2341e0a | 982 | log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r)); |
deb0a77c MO |
983 | goto fail; |
984 | } | |
985 | break; | |
986 | ||
8d567588 | 987 | default: |
f2341e0a | 988 | log_unit_error(UNIT(a), "Received unknown automount request %i", packet.hdr.type); |
8d567588 LP |
989 | break; |
990 | } | |
991 | ||
718db961 | 992 | return 0; |
8d567588 LP |
993 | |
994 | fail: | |
81a5c6d0 | 995 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
718db961 | 996 | return 0; |
8d567588 LP |
997 | } |
998 | ||
999 | static void automount_shutdown(Manager *m) { | |
1000 | assert(m); | |
1001 | ||
03e334a1 | 1002 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
1003 | } |
1004 | ||
74ac3cbd | 1005 | static void automount_reset_failed(Unit *u) { |
5632e374 LP |
1006 | Automount *a = AUTOMOUNT(u); |
1007 | ||
1008 | assert(a); | |
1009 | ||
74ac3cbd | 1010 | if (a->state == AUTOMOUNT_FAILED) |
5632e374 LP |
1011 | automount_set_state(a, AUTOMOUNT_DEAD); |
1012 | ||
81a5c6d0 | 1013 | a->result = AUTOMOUNT_SUCCESS; |
5632e374 LP |
1014 | } |
1015 | ||
1c2e9646 | 1016 | static bool automount_supported(void) { |
0faacd47 LP |
1017 | static int supported = -1; |
1018 | ||
0faacd47 LP |
1019 | if (supported < 0) |
1020 | supported = access("/dev/autofs", F_OK) >= 0; | |
1021 | ||
1022 | return supported; | |
1023 | } | |
1024 | ||
81a5c6d0 LP |
1025 | static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = { |
1026 | [AUTOMOUNT_SUCCESS] = "success", | |
1027 | [AUTOMOUNT_FAILURE_RESOURCES] = "resources" | |
1028 | }; | |
1029 | ||
1030 | DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult); | |
1031 | ||
87f0e418 | 1032 | const UnitVTable automount_vtable = { |
7d17cfbc | 1033 | .object_size = sizeof(Automount), |
718db961 | 1034 | |
f975e971 LP |
1035 | .sections = |
1036 | "Unit\0" | |
1037 | "Automount\0" | |
1038 | "Install\0", | |
5cb5a6ff | 1039 | |
e537352b | 1040 | .no_alias = true, |
8d567588 | 1041 | .no_instances = true, |
e537352b | 1042 | |
034c6ed7 | 1043 | .init = automount_init, |
e537352b | 1044 | .load = automount_load, |
034c6ed7 | 1045 | .done = automount_done, |
5cb5a6ff | 1046 | |
a16e1123 LP |
1047 | .coldplug = automount_coldplug, |
1048 | ||
034c6ed7 | 1049 | .dump = automount_dump, |
5cb5a6ff | 1050 | |
8d567588 LP |
1051 | .start = automount_start, |
1052 | .stop = automount_stop, | |
1053 | ||
a16e1123 LP |
1054 | .serialize = automount_serialize, |
1055 | .deserialize_item = automount_deserialize_item, | |
1056 | ||
10a94420 | 1057 | .active_state = automount_active_state, |
8d567588 LP |
1058 | .sub_state_to_string = automount_sub_state_to_string, |
1059 | ||
701cc384 LP |
1060 | .check_gc = automount_check_gc, |
1061 | ||
74ac3cbd | 1062 | .reset_failed = automount_reset_failed, |
5632e374 | 1063 | |
718db961 | 1064 | .bus_vtable = bus_automount_vtable, |
4139c1b2 | 1065 | |
c6918296 | 1066 | .shutdown = automount_shutdown, |
0faacd47 | 1067 | .supported = automount_supported, |
c6918296 MS |
1068 | |
1069 | .status_message_formats = { | |
1070 | .finished_start_job = { | |
1071 | [JOB_DONE] = "Set up automount %s.", | |
1072 | [JOB_FAILED] = "Failed to set up automount %s.", | |
c6918296 MS |
1073 | }, |
1074 | .finished_stop_job = { | |
1075 | [JOB_DONE] = "Unset automount %s.", | |
1076 | [JOB_FAILED] = "Failed to unset automount %s.", | |
1077 | }, | |
1078 | }, | |
5cb5a6ff | 1079 | }; |