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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" |
6bedfcbb | 43 | #include "parse-util.h" |
9eb977db | 44 | #include "path-util.h" |
0b452006 | 45 | #include "process-util.h" |
07630cea LP |
46 | #include "special.h" |
47 | #include "string-util.h" | |
48 | #include "unit-name.h" | |
49 | #include "unit.h" | |
5cb5a6ff | 50 | |
e537352b LP |
51 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
52 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
53 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
54 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
74ac3cbd | 55 | [AUTOMOUNT_FAILED] = UNIT_FAILED |
e537352b | 56 | }; |
5cb5a6ff | 57 | |
deb0a77c MO |
58 | struct expire_data { |
59 | int dev_autofs_fd; | |
60 | int ioctl_fd; | |
61 | }; | |
62 | ||
63 | static inline void expire_data_free(struct expire_data *data) { | |
64 | if (!data) | |
65 | return; | |
66 | ||
67 | safe_close(data->dev_autofs_fd); | |
68 | safe_close(data->ioctl_fd); | |
69 | free(data); | |
70 | } | |
71 | ||
72 | DEFINE_TRIVIAL_CLEANUP_FUNC(struct expire_data*, expire_data_free); | |
73 | ||
a16e1123 | 74 | static int open_dev_autofs(Manager *m); |
718db961 | 75 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata); |
8d567588 | 76 | |
e537352b LP |
77 | static void automount_init(Unit *u) { |
78 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 79 | |
8d567588 | 80 | assert(u); |
ac155bb8 | 81 | assert(u->load_state == UNIT_STUB); |
8d567588 | 82 | |
718db961 | 83 | a->pipe_fd = -1; |
1cf18f27 | 84 | a->directory_mode = 0755; |
1124fe6f | 85 | UNIT(a)->ignore_on_isolate = true; |
8d567588 LP |
86 | } |
87 | ||
a5e41bdb | 88 | static void repeat_unmount(const char *path) { |
8d567588 LP |
89 | assert(path); |
90 | ||
91 | for (;;) { | |
1b560190 LP |
92 | /* If there are multiple mounts on a mount point, this |
93 | * removes them all */ | |
8d567588 LP |
94 | |
95 | if (umount2(path, MNT_DETACH) >= 0) | |
96 | continue; | |
97 | ||
98 | if (errno != EINVAL) | |
56f64d95 | 99 | log_error_errno(errno, "Failed to unmount: %m"); |
8d567588 LP |
100 | |
101 | break; | |
102 | } | |
103 | } | |
104 | ||
deb0a77c MO |
105 | static int automount_send_ready(Automount *a, Set *tokens, int status); |
106 | ||
8d567588 LP |
107 | static void unmount_autofs(Automount *a) { |
108 | assert(a); | |
109 | ||
110 | if (a->pipe_fd < 0) | |
111 | return; | |
112 | ||
deb0a77c MO |
113 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
114 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
8d567588 | 115 | |
718db961 | 116 | a->pipe_event_source = sd_event_source_unref(a->pipe_event_source); |
03e334a1 | 117 | a->pipe_fd = safe_close(a->pipe_fd); |
8d567588 | 118 | |
a16e1123 LP |
119 | /* If we reload/reexecute things we keep the mount point |
120 | * around */ | |
121 | if (a->where && | |
1124fe6f MS |
122 | (UNIT(a)->manager->exit_code != MANAGER_RELOAD && |
123 | UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) | |
a5e41bdb | 124 | repeat_unmount(a->where); |
8d567588 LP |
125 | } |
126 | ||
127 | static void automount_done(Unit *u) { | |
128 | Automount *a = AUTOMOUNT(u); | |
129 | ||
130 | assert(a); | |
131 | ||
132 | unmount_autofs(a); | |
8d567588 | 133 | |
a1e58e8e | 134 | a->where = mfree(a->where); |
a16e1123 | 135 | |
525d3cc7 LP |
136 | a->tokens = set_free(a->tokens); |
137 | a->expire_tokens = set_free(a->expire_tokens); | |
deb0a77c MO |
138 | |
139 | a->expire_event_source = sd_event_source_unref(a->expire_event_source); | |
8d567588 LP |
140 | } |
141 | ||
a57f7e2c LP |
142 | static int automount_add_mount_links(Automount *a) { |
143 | _cleanup_free_ char *parent = NULL; | |
6e2ef85b LP |
144 | int r; |
145 | ||
146 | assert(a); | |
1b560190 | 147 | |
a57f7e2c | 148 | r = path_get_parent(a->where, &parent); |
0b2665c3 | 149 | if (r < 0) |
6e2ef85b LP |
150 | return r; |
151 | ||
a57f7e2c | 152 | return unit_require_mounts_for(UNIT(a), parent); |
6e2ef85b LP |
153 | } |
154 | ||
2edd4434 LP |
155 | static int automount_add_default_dependencies(Automount *a) { |
156 | int r; | |
157 | ||
158 | assert(a); | |
159 | ||
b2c23da8 | 160 | if (UNIT(a)->manager->running_as != MANAGER_SYSTEM) |
6b1dc2bd | 161 | return 0; |
2a77d31d | 162 | |
6b1dc2bd LP |
163 | r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
164 | if (r < 0) | |
165 | return r; | |
2edd4434 LP |
166 | |
167 | return 0; | |
168 | } | |
169 | ||
8d567588 | 170 | static int automount_verify(Automount *a) { |
e1d75803 | 171 | _cleanup_free_ char *e = NULL; |
7410616c LP |
172 | int r; |
173 | ||
8d567588 LP |
174 | assert(a); |
175 | ||
1124fe6f | 176 | if (UNIT(a)->load_state != UNIT_LOADED) |
8d567588 LP |
177 | return 0; |
178 | ||
41e45059 | 179 | if (path_equal(a->where, "/")) { |
f2341e0a | 180 | log_unit_error(UNIT(a), "Cannot have an automount unit for the root directory. Refusing."); |
41e45059 LP |
181 | return -EINVAL; |
182 | } | |
183 | ||
7410616c LP |
184 | r = unit_name_from_path(a->where, ".automount", &e); |
185 | if (r < 0) | |
f2341e0a | 186 | return log_unit_error(UNIT(a), "Failed to generate unit name from path: %m"); |
8d567588 | 187 | |
7410616c | 188 | if (!unit_has_name(UNIT(a), e)) { |
f2341e0a | 189 | log_unit_error(UNIT(a), "Where= setting doesn't match unit name. Refusing."); |
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 | 211 | if (!a->where) { |
7410616c LP |
212 | r = unit_name_to_path(u->id, &a->where); |
213 | if (r < 0) | |
214 | return r; | |
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) | |
f2341e0a | 253 | log_unit_debug(UNIT(a), "Changed %s -> %s", automount_state_to_string(old_state), automount_state_to_string(state)); |
8d567588 | 254 | |
e2f3b44c | 255 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
256 | } |
257 | ||
be847e82 | 258 | static int automount_coldplug(Unit *u) { |
a16e1123 LP |
259 | Automount *a = AUTOMOUNT(u); |
260 | int r; | |
261 | ||
262 | assert(a); | |
263 | assert(a->state == AUTOMOUNT_DEAD); | |
264 | ||
265 | if (a->deserialized_state != a->state) { | |
266 | ||
0b2665c3 LP |
267 | r = open_dev_autofs(u->manager); |
268 | if (r < 0) | |
a16e1123 LP |
269 | return r; |
270 | ||
271 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
272 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
a16e1123 LP |
273 | assert(a->pipe_fd >= 0); |
274 | ||
151b9b96 | 275 | r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u); |
0b2665c3 | 276 | if (r < 0) |
a16e1123 | 277 | return r; |
7dfbe2e3 TG |
278 | |
279 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); | |
a16e1123 LP |
280 | } |
281 | ||
282 | automount_set_state(a, a->deserialized_state); | |
283 | } | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
87f0e418 | 288 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
deb0a77c | 289 | char time_string[FORMAT_TIMESPAN_MAX]; |
a16e1123 | 290 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 291 | |
a16e1123 | 292 | assert(a); |
5cb5a6ff LP |
293 | |
294 | fprintf(f, | |
a16e1123 | 295 | "%sAutomount State: %s\n" |
81a5c6d0 | 296 | "%sResult: %s\n" |
1cf18f27 | 297 | "%sWhere: %s\n" |
deb0a77c MO |
298 | "%sDirectoryMode: %04o\n" |
299 | "%sTimeoutIdleUSec: %s\n", | |
a16e1123 | 300 | prefix, automount_state_to_string(a->state), |
81a5c6d0 | 301 | prefix, automount_result_to_string(a->result), |
1cf18f27 | 302 | prefix, a->where, |
deb0a77c MO |
303 | prefix, a->directory_mode, |
304 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, a->timeout_idle_usec, USEC_PER_SEC)); | |
5cb5a6ff LP |
305 | } |
306 | ||
81a5c6d0 | 307 | static void automount_enter_dead(Automount *a, AutomountResult f) { |
8d567588 LP |
308 | assert(a); |
309 | ||
81a5c6d0 LP |
310 | if (f != AUTOMOUNT_SUCCESS) |
311 | a->result = f; | |
8d567588 | 312 | |
81a5c6d0 | 313 | automount_set_state(a, a->result != AUTOMOUNT_SUCCESS ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD); |
8d567588 LP |
314 | } |
315 | ||
316 | static int open_dev_autofs(Manager *m) { | |
317 | struct autofs_dev_ioctl param; | |
318 | ||
319 | assert(m); | |
320 | ||
321 | if (m->dev_autofs_fd >= 0) | |
322 | return m->dev_autofs_fd; | |
323 | ||
c9bc0764 | 324 | label_fix("/dev/autofs", false, false); |
56cf987f | 325 | |
0b2665c3 | 326 | m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY); |
4a62c710 MS |
327 | if (m->dev_autofs_fd < 0) |
328 | return log_error_errno(errno, "Failed to open /dev/autofs: %m"); | |
8d567588 LP |
329 | |
330 | init_autofs_dev_ioctl(¶m); | |
331 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
03e334a1 | 332 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
333 | return -errno; |
334 | } | |
335 | ||
336 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
337 | ||
338 | return m->dev_autofs_fd; | |
339 | } | |
340 | ||
341 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
342 | struct autofs_dev_ioctl *param; | |
343 | size_t l; | |
8d567588 LP |
344 | |
345 | assert(dev_autofs_fd >= 0); | |
346 | assert(where); | |
347 | ||
348 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
0b2665c3 | 349 | param = alloca(l); |
8d567588 LP |
350 | |
351 | init_autofs_dev_ioctl(param); | |
352 | param->size = l; | |
353 | param->ioctlfd = -1; | |
354 | param->openmount.devid = devid; | |
355 | strcpy(param->path, where); | |
356 | ||
0b2665c3 LP |
357 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) |
358 | return -errno; | |
8d567588 | 359 | |
0b2665c3 LP |
360 | if (param->ioctlfd < 0) |
361 | return -EIO; | |
8d567588 | 362 | |
f34beace | 363 | (void) fd_cloexec(param->ioctlfd, true); |
0b2665c3 | 364 | return param->ioctlfd; |
8d567588 LP |
365 | } |
366 | ||
367 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
368 | uint32_t major, minor; | |
369 | struct autofs_dev_ioctl param; | |
370 | ||
371 | assert(dev_autofs_fd >= 0); | |
372 | assert(ioctl_fd >= 0); | |
373 | ||
374 | init_autofs_dev_ioctl(¶m); | |
375 | param.ioctlfd = ioctl_fd; | |
376 | ||
377 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
378 | return -errno; | |
379 | ||
380 | major = param.protover.version; | |
381 | ||
382 | init_autofs_dev_ioctl(¶m); | |
383 | param.ioctlfd = ioctl_fd; | |
384 | ||
385 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
386 | return -errno; | |
387 | ||
388 | minor = param.protosubver.sub_version; | |
389 | ||
390 | log_debug("Autofs protocol version %i.%i", major, minor); | |
391 | return 0; | |
392 | } | |
393 | ||
deb0a77c | 394 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, usec_t usec) { |
8d567588 LP |
395 | struct autofs_dev_ioctl param; |
396 | ||
397 | assert(dev_autofs_fd >= 0); | |
398 | assert(ioctl_fd >= 0); | |
399 | ||
400 | init_autofs_dev_ioctl(¶m); | |
401 | param.ioctlfd = ioctl_fd; | |
deb0a77c MO |
402 | |
403 | /* Convert to seconds, rounding up. */ | |
404 | param.timeout.timeout = (usec + USEC_PER_SEC - 1) / USEC_PER_SEC; | |
8d567588 LP |
405 | |
406 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
407 | return -errno; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
413 | struct autofs_dev_ioctl param; | |
414 | ||
415 | assert(dev_autofs_fd >= 0); | |
416 | assert(ioctl_fd >= 0); | |
417 | ||
418 | init_autofs_dev_ioctl(¶m); | |
419 | param.ioctlfd = ioctl_fd; | |
420 | ||
421 | if (status) { | |
422 | param.fail.token = token; | |
423 | param.fail.status = status; | |
424 | } else | |
425 | param.ready.token = token; | |
426 | ||
427 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
428 | return -errno; | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
deb0a77c | 433 | static int automount_send_ready(Automount *a, Set *tokens, int status) { |
03e334a1 | 434 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 435 | unsigned token; |
03e334a1 | 436 | int r; |
8d567588 LP |
437 | |
438 | assert(a); | |
439 | assert(status <= 0); | |
440 | ||
deb0a77c | 441 | if (set_isempty(tokens)) |
8d567588 LP |
442 | return 0; |
443 | ||
0b2665c3 | 444 | ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); |
03e334a1 LP |
445 | if (ioctl_fd < 0) |
446 | return ioctl_fd; | |
8d567588 LP |
447 | |
448 | if (status) | |
f2341e0a | 449 | log_unit_debug_errno(UNIT(a), status, "Sending failure: %m"); |
8d567588 | 450 | else |
f2341e0a | 451 | log_unit_debug(UNIT(a), "Sending success."); |
8d567588 | 452 | |
e364ad06 LP |
453 | r = 0; |
454 | ||
8d567588 | 455 | /* Autofs thankfully does not hand out 0 as a token */ |
deb0a77c | 456 | while ((token = PTR_TO_UINT(set_steal_first(tokens)))) { |
8d567588 LP |
457 | int k; |
458 | ||
459 | /* Autofs fun fact II: | |
460 | * | |
461 | * if you pass a positive status code here, the kernel will | |
462 | * freeze! Yay! */ | |
463 | ||
0b2665c3 LP |
464 | k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd, |
465 | ioctl_fd, | |
466 | token, | |
467 | status); | |
468 | if (k < 0) | |
8d567588 LP |
469 | r = k; |
470 | } | |
471 | ||
8d567588 LP |
472 | return r; |
473 | } | |
474 | ||
3dbadf9e MO |
475 | static int automount_start_expire(Automount *a); |
476 | ||
deb0a77c | 477 | int automount_update_mount(Automount *a, MountState old_state, MountState state) { |
3dbadf9e MO |
478 | int r; |
479 | ||
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); | |
3dbadf9e MO |
486 | r = automount_start_expire(a); |
487 | if (r < 0) | |
488 | log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m"); | |
deb0a77c MO |
489 | break; |
490 | case MOUNT_DEAD: | |
491 | case MOUNT_UNMOUNTING: | |
492 | case MOUNT_MOUNTING_SIGTERM: | |
493 | case MOUNT_MOUNTING_SIGKILL: | |
494 | case MOUNT_REMOUNTING_SIGTERM: | |
495 | case MOUNT_REMOUNTING_SIGKILL: | |
496 | case MOUNT_UNMOUNTING_SIGTERM: | |
497 | case MOUNT_UNMOUNTING_SIGKILL: | |
498 | case MOUNT_FAILED: | |
499 | if (old_state != state) | |
500 | automount_send_ready(a, a->tokens, -ENODEV); | |
3dbadf9e | 501 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); |
deb0a77c MO |
502 | break; |
503 | default: | |
504 | break; | |
505 | } | |
506 | ||
507 | switch (state) { | |
508 | case MOUNT_DEAD: | |
509 | automount_send_ready(a, a->expire_tokens, 0); | |
510 | break; | |
511 | case MOUNT_MOUNTING: | |
512 | case MOUNT_MOUNTING_DONE: | |
513 | case MOUNT_MOUNTING_SIGTERM: | |
514 | case MOUNT_MOUNTING_SIGKILL: | |
515 | case MOUNT_REMOUNTING_SIGTERM: | |
516 | case MOUNT_REMOUNTING_SIGKILL: | |
517 | case MOUNT_UNMOUNTING_SIGTERM: | |
518 | case MOUNT_UNMOUNTING_SIGKILL: | |
519 | case MOUNT_FAILED: | |
520 | if (old_state != state) | |
521 | automount_send_ready(a, a->expire_tokens, -ENODEV); | |
522 | break; | |
523 | default: | |
524 | break; | |
525 | } | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
8d567588 | 530 | static void automount_enter_waiting(Automount *a) { |
03e334a1 | 531 | _cleanup_close_ int ioctl_fd = -1; |
8d567588 | 532 | int p[2] = { -1, -1 }; |
5ffa8c81 ZJS |
533 | char name[sizeof("systemd-")-1 + DECIMAL_STR_MAX(pid_t) + 1]; |
534 | char options[sizeof("fd=,pgrp=,minproto=5,maxproto=5,direct")-1 | |
535 | + DECIMAL_STR_MAX(int) + DECIMAL_STR_MAX(gid_t) + 1]; | |
8d567588 | 536 | bool mounted = false; |
03e334a1 | 537 | int r, dev_autofs_fd; |
8d567588 LP |
538 | struct stat st; |
539 | ||
540 | assert(a); | |
541 | assert(a->pipe_fd < 0); | |
542 | assert(a->where); | |
543 | ||
f2341e0a LP |
544 | set_clear(a->tokens); |
545 | ||
546 | r = unit_fail_if_symlink(UNIT(a), a->where); | |
547 | if (r < 0) | |
548 | goto fail; | |
549 | ||
550 | (void) mkdir_p_label(a->where, 0555); | |
551 | ||
552 | unit_warn_if_dir_nonempty(UNIT(a), a->where); | |
8d567588 | 553 | |
0b2665c3 LP |
554 | dev_autofs_fd = open_dev_autofs(UNIT(a)->manager); |
555 | if (dev_autofs_fd < 0) { | |
8d567588 LP |
556 | r = dev_autofs_fd; |
557 | goto fail; | |
558 | } | |
559 | ||
a16e1123 | 560 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
561 | r = -errno; |
562 | goto fail; | |
563 | } | |
564 | ||
5ffa8c81 ZJS |
565 | xsprintf(options, "fd=%i,pgrp="PID_FMT",minproto=5,maxproto=5,direct", p[1], getpgrp()); |
566 | xsprintf(name, "systemd-"PID_FMT, getpid()); | |
8d567588 LP |
567 | if (mount(name, a->where, "autofs", 0, options) < 0) { |
568 | r = -errno; | |
569 | goto fail; | |
570 | } | |
571 | ||
572 | mounted = true; | |
573 | ||
03e334a1 | 574 | p[1] = safe_close(p[1]); |
8d567588 LP |
575 | |
576 | if (stat(a->where, &st) < 0) { | |
577 | r = -errno; | |
578 | goto fail; | |
579 | } | |
580 | ||
0b2665c3 LP |
581 | ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev); |
582 | if (ioctl_fd < 0) { | |
8d567588 LP |
583 | r = ioctl_fd; |
584 | goto fail; | |
585 | } | |
586 | ||
0b2665c3 LP |
587 | r = autofs_protocol(dev_autofs_fd, ioctl_fd); |
588 | if (r < 0) | |
8d567588 LP |
589 | goto fail; |
590 | ||
deb0a77c | 591 | r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, a->timeout_idle_usec); |
0b2665c3 | 592 | if (r < 0) |
8d567588 LP |
593 | goto fail; |
594 | ||
595 | /* Autofs fun fact: | |
596 | * | |
597 | * Unless we close the ioctl fd here, for some weird reason | |
598 | * the direct mount will not receive events from the | |
599 | * kernel. */ | |
600 | ||
151b9b96 | 601 | r = sd_event_add_io(UNIT(a)->manager->event, &a->pipe_event_source, p[0], EPOLLIN, automount_dispatch_io, a); |
0b2665c3 | 602 | if (r < 0) |
8d567588 LP |
603 | goto fail; |
604 | ||
7dfbe2e3 TG |
605 | (void) sd_event_source_set_description(a->pipe_event_source, "automount-io"); |
606 | ||
8d567588 LP |
607 | a->pipe_fd = p[0]; |
608 | a->dev_id = st.st_dev; | |
609 | ||
610 | automount_set_state(a, AUTOMOUNT_WAITING); | |
611 | ||
612 | return; | |
613 | ||
614 | fail: | |
3d94f76c | 615 | safe_close_pair(p); |
8d567588 LP |
616 | |
617 | if (mounted) | |
a5e41bdb | 618 | repeat_unmount(a->where); |
8d567588 | 619 | |
f2341e0a | 620 | log_unit_error_errno(UNIT(a), r, "Failed to initialize automounter: %m"); |
81a5c6d0 | 621 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
622 | } |
623 | ||
deb0a77c MO |
624 | static void *expire_thread(void *p) { |
625 | struct autofs_dev_ioctl param; | |
626 | _cleanup_(expire_data_freep) struct expire_data *data = (struct expire_data*)p; | |
627 | int r; | |
628 | ||
629 | assert(data->dev_autofs_fd >= 0); | |
630 | assert(data->ioctl_fd >= 0); | |
631 | ||
632 | init_autofs_dev_ioctl(¶m); | |
633 | param.ioctlfd = data->ioctl_fd; | |
634 | ||
635 | do { | |
636 | r = ioctl(data->dev_autofs_fd, AUTOFS_DEV_IOCTL_EXPIRE, ¶m); | |
637 | } while (r >= 0); | |
638 | ||
639 | if (errno != EAGAIN) | |
640 | log_warning_errno(errno, "Failed to expire automount, ignoring: %m"); | |
641 | ||
642 | return NULL; | |
643 | } | |
644 | ||
deb0a77c MO |
645 | static int automount_dispatch_expire(sd_event_source *source, usec_t usec, void *userdata) { |
646 | Automount *a = AUTOMOUNT(userdata); | |
647 | _cleanup_(expire_data_freep) struct expire_data *data = NULL; | |
648 | int r; | |
649 | ||
650 | assert(a); | |
651 | assert(source == a->expire_event_source); | |
652 | ||
653 | data = new0(struct expire_data, 1); | |
654 | if (!data) | |
655 | return log_oom(); | |
656 | ||
657 | data->ioctl_fd = -1; | |
658 | ||
659 | data->dev_autofs_fd = fcntl(UNIT(a)->manager->dev_autofs_fd, F_DUPFD_CLOEXEC, 3); | |
660 | if (data->dev_autofs_fd < 0) | |
f2341e0a | 661 | return log_unit_error_errno(UNIT(a), errno, "Failed to duplicate autofs fd: %m"); |
deb0a77c MO |
662 | |
663 | data->ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id); | |
664 | if (data->ioctl_fd < 0) | |
f2341e0a | 665 | return log_unit_error_errno(UNIT(a), data->ioctl_fd, "Couldn't open autofs ioctl fd: %m"); |
deb0a77c MO |
666 | |
667 | r = asynchronous_job(expire_thread, data); | |
668 | if (r < 0) | |
f2341e0a | 669 | return log_unit_error_errno(UNIT(a), r, "Failed to start expire job: %m"); |
deb0a77c MO |
670 | |
671 | data = NULL; | |
672 | ||
673 | return automount_start_expire(a); | |
674 | } | |
675 | ||
676 | static int automount_start_expire(Automount *a) { | |
677 | int r; | |
678 | usec_t timeout; | |
679 | ||
680 | assert(a); | |
681 | ||
93a3b53b DM |
682 | if (a->timeout_idle_usec == 0) |
683 | return 0; | |
684 | ||
dbf5cc47 | 685 | timeout = now(CLOCK_MONOTONIC) + MAX(a->timeout_idle_usec/3, USEC_PER_SEC); |
deb0a77c MO |
686 | |
687 | if (a->expire_event_source) { | |
688 | r = sd_event_source_set_time(a->expire_event_source, timeout); | |
689 | if (r < 0) | |
690 | return r; | |
691 | ||
692 | return sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_ONESHOT); | |
693 | } | |
694 | ||
7dfbe2e3 | 695 | r = sd_event_add_time( |
deb0a77c MO |
696 | UNIT(a)->manager->event, |
697 | &a->expire_event_source, | |
698 | CLOCK_MONOTONIC, timeout, 0, | |
699 | automount_dispatch_expire, a); | |
7dfbe2e3 TG |
700 | if (r < 0) |
701 | return r; | |
702 | ||
703 | (void) sd_event_source_set_description(a->expire_event_source, "automount-expire"); | |
704 | ||
705 | return 0; | |
deb0a77c MO |
706 | } |
707 | ||
8d567588 | 708 | static void automount_enter_runnning(Automount *a) { |
718db961 | 709 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
3ecaa09b LP |
710 | struct stat st; |
711 | int r; | |
8d567588 LP |
712 | |
713 | assert(a); | |
8d567588 | 714 | |
ba3e67a7 LP |
715 | /* We don't take mount requests anymore if we are supposed to |
716 | * shut down anyway */ | |
31afa0a4 | 717 | if (unit_stop_pending(UNIT(a))) { |
f2341e0a | 718 | log_unit_debug(UNIT(a), "Suppressing automount request since unit stop is scheduled."); |
deb0a77c MO |
719 | automount_send_ready(a, a->tokens, -EHOSTDOWN); |
720 | automount_send_ready(a, a->expire_tokens, -EHOSTDOWN); | |
ba3e67a7 LP |
721 | return; |
722 | } | |
723 | ||
d2e54fae | 724 | mkdir_p_label(a->where, a->directory_mode); |
8d567588 | 725 | |
1cf18f27 LP |
726 | /* Before we do anything, let's see if somebody is playing games with us? */ |
727 | if (lstat(a->where, &st) < 0) { | |
f2341e0a | 728 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); |
8d567588 LP |
729 | goto fail; |
730 | } | |
731 | ||
732 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
f2341e0a | 733 | log_unit_info(UNIT(a), "Automount point already active?"); |
3ecaa09b LP |
734 | else { |
735 | r = manager_add_job(UNIT(a)->manager, JOB_START, UNIT_TRIGGER(UNIT(a)), | |
736 | JOB_REPLACE, true, &error, NULL); | |
737 | if (r < 0) { | |
f2341e0a | 738 | log_unit_warning(UNIT(a), "Failed to queue mount startup job: %s", bus_error_message(&error, r)); |
3ecaa09b LP |
739 | goto fail; |
740 | } | |
8d567588 LP |
741 | } |
742 | ||
743 | automount_set_state(a, AUTOMOUNT_RUNNING); | |
744 | return; | |
745 | ||
746 | fail: | |
81a5c6d0 | 747 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
8d567588 LP |
748 | } |
749 | ||
750 | static int automount_start(Unit *u) { | |
751 | Automount *a = AUTOMOUNT(u); | |
752 | ||
753 | assert(a); | |
74ac3cbd | 754 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED); |
01f78473 | 755 | |
e26d6ce5 | 756 | if (path_is_mount_point(a->where, 0) > 0) { |
f2341e0a | 757 | log_unit_error(u, "Path %s is already a mount point, refusing start.", a->where); |
8d567588 LP |
758 | return -EEXIST; |
759 | } | |
760 | ||
3ecaa09b | 761 | if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED) |
01f78473 | 762 | return -ENOENT; |
8d567588 | 763 | |
81a5c6d0 | 764 | a->result = AUTOMOUNT_SUCCESS; |
8d567588 | 765 | automount_enter_waiting(a); |
82a2b6bb | 766 | return 1; |
8d567588 LP |
767 | } |
768 | ||
769 | static int automount_stop(Unit *u) { | |
770 | Automount *a = AUTOMOUNT(u); | |
771 | ||
772 | assert(a); | |
8d567588 LP |
773 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); |
774 | ||
81a5c6d0 | 775 | automount_enter_dead(a, AUTOMOUNT_SUCCESS); |
82a2b6bb | 776 | return 1; |
8d567588 LP |
777 | } |
778 | ||
a16e1123 LP |
779 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
780 | Automount *a = AUTOMOUNT(u); | |
a16e1123 | 781 | Iterator i; |
a34ceba6 LP |
782 | void *p; |
783 | int r; | |
a16e1123 LP |
784 | |
785 | assert(a); | |
786 | assert(f); | |
787 | assert(fds); | |
788 | ||
789 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
81a5c6d0 | 790 | unit_serialize_item(u, f, "result", automount_result_to_string(a->result)); |
a16e1123 LP |
791 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); |
792 | ||
793 | SET_FOREACH(p, a->tokens, i) | |
794 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
deb0a77c MO |
795 | SET_FOREACH(p, a->expire_tokens, i) |
796 | unit_serialize_item_format(u, f, "expire-token", "%u", PTR_TO_UINT(p)); | |
a16e1123 | 797 | |
a34ceba6 LP |
798 | r = unit_serialize_item_fd(u, f, fds, "pipe-fd", a->pipe_fd); |
799 | if (r < 0) | |
800 | return r; | |
a16e1123 LP |
801 | |
802 | return 0; | |
803 | } | |
804 | ||
805 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
806 | Automount *a = AUTOMOUNT(u); | |
807 | int r; | |
808 | ||
809 | assert(a); | |
810 | assert(fds); | |
811 | ||
812 | if (streq(key, "state")) { | |
813 | AutomountState state; | |
814 | ||
0b2665c3 LP |
815 | state = automount_state_from_string(value); |
816 | if (state < 0) | |
f2341e0a | 817 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
818 | else |
819 | a->deserialized_state = state; | |
81a5c6d0 LP |
820 | } else if (streq(key, "result")) { |
821 | AutomountResult f; | |
822 | ||
823 | f = automount_result_from_string(value); | |
824 | if (f < 0) | |
f2341e0a | 825 | log_unit_debug(u, "Failed to parse result value: %s", value); |
81a5c6d0 LP |
826 | else if (f != AUTOMOUNT_SUCCESS) |
827 | a->result = f; | |
a16e1123 | 828 | |
a16e1123 LP |
829 | } else if (streq(key, "dev-id")) { |
830 | unsigned d; | |
831 | ||
832 | if (safe_atou(value, &d) < 0) | |
f2341e0a | 833 | log_unit_debug(u, "Failed to parse dev-id value: %s", value); |
a16e1123 LP |
834 | else |
835 | a->dev_id = (unsigned) d; | |
836 | } else if (streq(key, "token")) { | |
837 | unsigned token; | |
838 | ||
839 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 840 | log_unit_debug(u, "Failed to parse token value: %s", value); |
a16e1123 | 841 | else { |
f34beace LP |
842 | r = set_ensure_allocated(&a->tokens, NULL); |
843 | if (r < 0) { | |
844 | log_oom(); | |
845 | return 0; | |
846 | } | |
a16e1123 | 847 | |
0b2665c3 LP |
848 | r = set_put(a->tokens, UINT_TO_PTR(token)); |
849 | if (r < 0) | |
f2341e0a | 850 | log_unit_error_errno(u, r, "Failed to add token to set: %m"); |
a16e1123 | 851 | } |
deb0a77c MO |
852 | } else if (streq(key, "expire-token")) { |
853 | unsigned token; | |
854 | ||
855 | if (safe_atou(value, &token) < 0) | |
f2341e0a | 856 | log_unit_debug(u, "Failed to parse token value: %s", value); |
deb0a77c MO |
857 | else { |
858 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
859 | if (r < 0) { | |
860 | log_oom(); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | r = set_put(a->expire_tokens, UINT_TO_PTR(token)); | |
865 | if (r < 0) | |
f2341e0a | 866 | log_unit_error_errno(u, r, "Failed to add expire token to set: %m"); |
deb0a77c | 867 | } |
a16e1123 LP |
868 | } else if (streq(key, "pipe-fd")) { |
869 | int fd; | |
870 | ||
871 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 872 | log_unit_debug(u, "Failed to parse pipe-fd value: %s", value); |
a16e1123 | 873 | else { |
03e334a1 | 874 | safe_close(a->pipe_fd); |
a16e1123 LP |
875 | a->pipe_fd = fdset_remove(fds, fd); |
876 | } | |
877 | } else | |
f2341e0a | 878 | log_unit_debug(u, "Unknown serialization key: %s", key); |
a16e1123 LP |
879 | |
880 | return 0; | |
881 | } | |
882 | ||
87f0e418 | 883 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 884 | assert(u); |
87f0e418 | 885 | |
e537352b | 886 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
887 | } |
888 | ||
10a94420 LP |
889 | static const char *automount_sub_state_to_string(Unit *u) { |
890 | assert(u); | |
891 | ||
a16e1123 | 892 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
893 | } |
894 | ||
701cc384 | 895 | static bool automount_check_gc(Unit *u) { |
3ecaa09b | 896 | assert(u); |
701cc384 | 897 | |
3ecaa09b | 898 | if (!UNIT_TRIGGER(u)) |
7573916f LP |
899 | return false; |
900 | ||
3ecaa09b | 901 | return UNIT_VTABLE(UNIT_TRIGGER(u))->check_gc(UNIT_TRIGGER(u)); |
701cc384 LP |
902 | } |
903 | ||
718db961 | 904 | static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, void *userdata) { |
deb0a77c | 905 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
8d567588 | 906 | union autofs_v5_packet_union packet; |
718db961 | 907 | Automount *a = AUTOMOUNT(userdata); |
5f8ae398 | 908 | struct stat st; |
8d567588 LP |
909 | int r; |
910 | ||
8d567588 LP |
911 | assert(a); |
912 | assert(fd == a->pipe_fd); | |
913 | ||
914 | if (events != EPOLLIN) { | |
f2341e0a | 915 | log_unit_error(UNIT(a), "Got invalid poll event %"PRIu32" on pipe (fd=%d)", events, fd); |
8d567588 LP |
916 | goto fail; |
917 | } | |
918 | ||
a6dcc7e5 ZJS |
919 | r = loop_read_exact(a->pipe_fd, &packet, sizeof(packet), true); |
920 | if (r < 0) { | |
f2341e0a | 921 | log_unit_error_errno(UNIT(a), r, "Invalid read from pipe: %m"); |
8d567588 LP |
922 | goto fail; |
923 | } | |
924 | ||
925 | switch (packet.hdr.type) { | |
926 | ||
927 | case autofs_ptype_missing_direct: | |
941a4041 LP |
928 | |
929 | if (packet.v5_packet.pid > 0) { | |
e42e801b | 930 | _cleanup_free_ char *p = NULL; |
941a4041 | 931 | |
87d2c1ff | 932 | get_process_comm(packet.v5_packet.pid, &p); |
f2341e0a | 933 | log_unit_info(UNIT(a), "Got automount request for %s, triggered by %"PRIu32" (%s)", a->where, packet.v5_packet.pid, strna(p)); |
941a4041 | 934 | } else |
f2341e0a | 935 | log_unit_debug(UNIT(a), "Got direct mount request on %s", a->where); |
8d567588 | 936 | |
d5099efc | 937 | r = set_ensure_allocated(&a->tokens, NULL); |
0b2665c3 | 938 | if (r < 0) { |
f2341e0a | 939 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
0b2665c3 LP |
940 | goto fail; |
941 | } | |
a16e1123 | 942 | |
0b2665c3 LP |
943 | r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); |
944 | if (r < 0) { | |
f2341e0a | 945 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
8d567588 LP |
946 | goto fail; |
947 | } | |
948 | ||
949 | automount_enter_runnning(a); | |
950 | break; | |
951 | ||
deb0a77c | 952 | case autofs_ptype_expire_direct: |
f2341e0a | 953 | log_unit_debug(UNIT(a), "Got direct umount request on %s", a->where); |
deb0a77c MO |
954 | |
955 | (void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF); | |
956 | ||
957 | r = set_ensure_allocated(&a->expire_tokens, NULL); | |
958 | if (r < 0) { | |
f2341e0a | 959 | log_unit_error(UNIT(a), "Failed to allocate token set."); |
deb0a77c MO |
960 | goto fail; |
961 | } | |
962 | ||
963 | r = set_put(a->expire_tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token)); | |
964 | if (r < 0) { | |
f2341e0a | 965 | log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m"); |
deb0a77c MO |
966 | goto fail; |
967 | } | |
5f8ae398 MO |
968 | |
969 | /* Before we do anything, let's see if somebody is playing games with us? */ | |
970 | if (lstat(a->where, &st) < 0) { | |
971 | log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m"); | |
972 | goto fail; | |
973 | } | |
974 | ||
975 | if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) { | |
976 | log_unit_info(UNIT(a), "Automount point already unmounted?"); | |
977 | automount_send_ready(a, a->expire_tokens, 0); | |
978 | break; | |
979 | } | |
980 | ||
deb0a77c MO |
981 | r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL); |
982 | if (r < 0) { | |
f2341e0a | 983 | log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r)); |
deb0a77c MO |
984 | goto fail; |
985 | } | |
986 | break; | |
987 | ||
8d567588 | 988 | default: |
f2341e0a | 989 | log_unit_error(UNIT(a), "Received unknown automount request %i", packet.hdr.type); |
8d567588 LP |
990 | break; |
991 | } | |
992 | ||
718db961 | 993 | return 0; |
8d567588 LP |
994 | |
995 | fail: | |
81a5c6d0 | 996 | automount_enter_dead(a, AUTOMOUNT_FAILURE_RESOURCES); |
718db961 | 997 | return 0; |
8d567588 LP |
998 | } |
999 | ||
1000 | static void automount_shutdown(Manager *m) { | |
1001 | assert(m); | |
1002 | ||
03e334a1 | 1003 | m->dev_autofs_fd = safe_close(m->dev_autofs_fd); |
8d567588 LP |
1004 | } |
1005 | ||
74ac3cbd | 1006 | static void automount_reset_failed(Unit *u) { |
5632e374 LP |
1007 | Automount *a = AUTOMOUNT(u); |
1008 | ||
1009 | assert(a); | |
1010 | ||
74ac3cbd | 1011 | if (a->state == AUTOMOUNT_FAILED) |
5632e374 LP |
1012 | automount_set_state(a, AUTOMOUNT_DEAD); |
1013 | ||
81a5c6d0 | 1014 | a->result = AUTOMOUNT_SUCCESS; |
5632e374 LP |
1015 | } |
1016 | ||
1c2e9646 | 1017 | static bool automount_supported(void) { |
0faacd47 LP |
1018 | static int supported = -1; |
1019 | ||
0faacd47 LP |
1020 | if (supported < 0) |
1021 | supported = access("/dev/autofs", F_OK) >= 0; | |
1022 | ||
1023 | return supported; | |
1024 | } | |
1025 | ||
81a5c6d0 LP |
1026 | static const char* const automount_result_table[_AUTOMOUNT_RESULT_MAX] = { |
1027 | [AUTOMOUNT_SUCCESS] = "success", | |
1028 | [AUTOMOUNT_FAILURE_RESOURCES] = "resources" | |
1029 | }; | |
1030 | ||
1031 | DEFINE_STRING_TABLE_LOOKUP(automount_result, AutomountResult); | |
1032 | ||
87f0e418 | 1033 | const UnitVTable automount_vtable = { |
7d17cfbc | 1034 | .object_size = sizeof(Automount), |
718db961 | 1035 | |
f975e971 LP |
1036 | .sections = |
1037 | "Unit\0" | |
1038 | "Automount\0" | |
1039 | "Install\0", | |
5cb5a6ff | 1040 | |
e537352b | 1041 | .no_alias = true, |
8d567588 | 1042 | .no_instances = true, |
e537352b | 1043 | |
034c6ed7 | 1044 | .init = automount_init, |
e537352b | 1045 | .load = automount_load, |
034c6ed7 | 1046 | .done = automount_done, |
5cb5a6ff | 1047 | |
a16e1123 LP |
1048 | .coldplug = automount_coldplug, |
1049 | ||
034c6ed7 | 1050 | .dump = automount_dump, |
5cb5a6ff | 1051 | |
8d567588 LP |
1052 | .start = automount_start, |
1053 | .stop = automount_stop, | |
1054 | ||
a16e1123 LP |
1055 | .serialize = automount_serialize, |
1056 | .deserialize_item = automount_deserialize_item, | |
1057 | ||
10a94420 | 1058 | .active_state = automount_active_state, |
8d567588 LP |
1059 | .sub_state_to_string = automount_sub_state_to_string, |
1060 | ||
701cc384 LP |
1061 | .check_gc = automount_check_gc, |
1062 | ||
74ac3cbd | 1063 | .reset_failed = automount_reset_failed, |
5632e374 | 1064 | |
718db961 | 1065 | .bus_vtable = bus_automount_vtable, |
4139c1b2 | 1066 | |
c6918296 | 1067 | .shutdown = automount_shutdown, |
0faacd47 | 1068 | .supported = automount_supported, |
c6918296 MS |
1069 | |
1070 | .status_message_formats = { | |
1071 | .finished_start_job = { | |
1072 | [JOB_DONE] = "Set up automount %s.", | |
1073 | [JOB_FAILED] = "Failed to set up automount %s.", | |
c6918296 MS |
1074 | }, |
1075 | .finished_stop_job = { | |
1076 | [JOB_DONE] = "Unset automount %s.", | |
1077 | [JOB_FAILED] = "Failed to unset automount %s.", | |
1078 | }, | |
1079 | }, | |
5cb5a6ff | 1080 | }; |