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Commit | Line | Data |
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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
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 | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <errno.h> |
8d567588 LP |
23 | #include <limits.h> |
24 | #include <sys/mount.h> | |
25 | #include <unistd.h> | |
26 | #include <fcntl.h> | |
27 | #include <sys/epoll.h> | |
28 | #include <sys/stat.h> | |
29 | #include <linux/auto_fs4.h> | |
30 | #include <linux/auto_dev-ioctl.h> | |
5cb5a6ff | 31 | |
87f0e418 | 32 | #include "unit.h" |
5cb5a6ff LP |
33 | #include "automount.h" |
34 | #include "load-fragment.h" | |
5cb5a6ff | 35 | #include "load-dropin.h" |
8d567588 | 36 | #include "unit-name.h" |
4139c1b2 | 37 | #include "dbus-automount.h" |
5cb5a6ff | 38 | |
e537352b LP |
39 | static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = { |
40 | [AUTOMOUNT_DEAD] = UNIT_INACTIVE, | |
41 | [AUTOMOUNT_WAITING] = UNIT_ACTIVE, | |
42 | [AUTOMOUNT_RUNNING] = UNIT_ACTIVE, | |
43 | [AUTOMOUNT_MAINTAINANCE] = UNIT_INACTIVE, | |
44 | }; | |
5cb5a6ff | 45 | |
a16e1123 | 46 | static int open_dev_autofs(Manager *m); |
8d567588 | 47 | |
e537352b LP |
48 | static void automount_init(Unit *u) { |
49 | Automount *a = AUTOMOUNT(u); | |
5cb5a6ff | 50 | |
8d567588 LP |
51 | assert(u); |
52 | assert(u->meta.load_state == UNIT_STUB); | |
53 | ||
54 | a->pipe_watch.fd = a->pipe_fd = -1; | |
a16e1123 | 55 | a->pipe_watch.type = WATCH_INVALID; |
8d567588 LP |
56 | } |
57 | ||
58 | static void repeat_unmout(const char *path) { | |
59 | assert(path); | |
60 | ||
61 | for (;;) { | |
62 | ||
63 | if (umount2(path, MNT_DETACH) >= 0) | |
64 | continue; | |
65 | ||
66 | if (errno != EINVAL) | |
67 | log_error("Failed to unmount: %m"); | |
68 | ||
69 | break; | |
70 | } | |
71 | } | |
72 | ||
73 | static void unmount_autofs(Automount *a) { | |
74 | assert(a); | |
75 | ||
76 | if (a->pipe_fd < 0) | |
77 | return; | |
78 | ||
79 | automount_send_ready(a, -EHOSTDOWN); | |
80 | ||
81 | unit_unwatch_fd(UNIT(a), &a->pipe_watch); | |
82 | close_nointr_nofail(a->pipe_fd); | |
83 | a->pipe_fd = -1; | |
84 | ||
a16e1123 LP |
85 | /* If we reload/reexecute things we keep the mount point |
86 | * around */ | |
87 | if (a->where && | |
88 | (UNIT(a)->meta.manager->exit_code != MANAGER_RELOAD && | |
89 | UNIT(a)->meta.manager->exit_code != MANAGER_REEXECUTE)) | |
90 | repeat_unmout(a->where); | |
8d567588 LP |
91 | } |
92 | ||
93 | static void automount_done(Unit *u) { | |
94 | Automount *a = AUTOMOUNT(u); | |
95 | ||
96 | assert(a); | |
97 | ||
98 | unmount_autofs(a); | |
e537352b | 99 | a->mount = NULL; |
8d567588 | 100 | |
a16e1123 LP |
101 | free(a->where); |
102 | a->where = NULL; | |
103 | ||
104 | set_free(a->tokens); | |
105 | a->tokens = NULL; | |
8d567588 LP |
106 | } |
107 | ||
108 | static int automount_verify(Automount *a) { | |
109 | bool b; | |
110 | char *e; | |
111 | assert(a); | |
112 | ||
113 | if (UNIT(a)->meta.load_state != UNIT_LOADED) | |
114 | return 0; | |
115 | ||
a16e1123 | 116 | if (!(e = unit_name_from_path(a->where, ".automount"))) |
8d567588 LP |
117 | return -ENOMEM; |
118 | ||
119 | b = unit_has_name(UNIT(a), e); | |
120 | free(e); | |
121 | ||
122 | if (!b) { | |
123 | log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(a)->meta.id); | |
124 | return -EINVAL; | |
125 | } | |
126 | ||
127 | return 0; | |
e537352b | 128 | } |
5cb5a6ff | 129 | |
e537352b LP |
130 | static int automount_load(Unit *u) { |
131 | int r; | |
132 | Automount *a = AUTOMOUNT(u); | |
23a177ef | 133 | |
e537352b LP |
134 | assert(u); |
135 | assert(u->meta.load_state == UNIT_STUB); | |
5cb5a6ff | 136 | |
e537352b LP |
137 | /* Load a .automount file */ |
138 | if ((r = unit_load_fragment_and_dropin_optional(u)) < 0) | |
139 | return r; | |
23a177ef | 140 | |
e537352b | 141 | if (u->meta.load_state == UNIT_LOADED) { |
23a177ef | 142 | |
a16e1123 LP |
143 | if (!a->where) |
144 | if (!(a->where = unit_name_to_path(u->meta.id))) | |
145 | return -ENOMEM; | |
146 | ||
147 | path_kill_slashes(a->where); | |
148 | ||
e537352b | 149 | if ((r = unit_load_related_unit(u, ".mount", (Unit**) &a->mount)) < 0) |
23a177ef LP |
150 | return r; |
151 | ||
701cc384 | 152 | if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(a->mount), true)) < 0) |
23a177ef LP |
153 | return r; |
154 | } | |
155 | ||
8d567588 | 156 | return automount_verify(a); |
5cb5a6ff LP |
157 | } |
158 | ||
8d567588 LP |
159 | static void automount_set_state(Automount *a, AutomountState state) { |
160 | AutomountState old_state; | |
e537352b | 161 | assert(a); |
034c6ed7 | 162 | |
8d567588 LP |
163 | old_state = a->state; |
164 | a->state = state; | |
165 | ||
166 | if (state != AUTOMOUNT_WAITING && | |
167 | state != AUTOMOUNT_RUNNING) | |
168 | unmount_autofs(a); | |
169 | ||
170 | if (state != old_state) | |
a16e1123 LP |
171 | log_debug("%s changed %s → %s", |
172 | UNIT(a)->meta.id, | |
173 | automount_state_to_string(old_state), | |
174 | automount_state_to_string(state)); | |
8d567588 LP |
175 | |
176 | unit_notify(UNIT(a), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
177 | } |
178 | ||
a16e1123 LP |
179 | static int automount_coldplug(Unit *u) { |
180 | Automount *a = AUTOMOUNT(u); | |
181 | int r; | |
182 | ||
183 | assert(a); | |
184 | assert(a->state == AUTOMOUNT_DEAD); | |
185 | ||
186 | if (a->deserialized_state != a->state) { | |
187 | ||
188 | if ((r = open_dev_autofs(u->meta.manager)) < 0) | |
189 | return r; | |
190 | ||
191 | if (a->deserialized_state == AUTOMOUNT_WAITING || | |
192 | a->deserialized_state == AUTOMOUNT_RUNNING) { | |
193 | ||
194 | assert(a->pipe_fd >= 0); | |
195 | ||
196 | if ((r = unit_watch_fd(UNIT(a), a->pipe_fd, EPOLLIN, &a->pipe_watch)) < 0) | |
197 | return r; | |
198 | } | |
199 | ||
200 | automount_set_state(a, a->deserialized_state); | |
201 | } | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
87f0e418 | 206 | static void automount_dump(Unit *u, FILE *f, const char *prefix) { |
a16e1123 | 207 | Automount *a = AUTOMOUNT(u); |
5cb5a6ff | 208 | |
a16e1123 | 209 | assert(a); |
5cb5a6ff LP |
210 | |
211 | fprintf(f, | |
a16e1123 LP |
212 | "%sAutomount State: %s\n" |
213 | "%sWhere: %s\n", | |
214 | prefix, automount_state_to_string(a->state), | |
215 | prefix, a->where); | |
5cb5a6ff LP |
216 | } |
217 | ||
8d567588 LP |
218 | static void automount_enter_dead(Automount *a, bool success) { |
219 | assert(a); | |
220 | ||
221 | if (!success) | |
222 | a->failure = true; | |
223 | ||
224 | automount_set_state(a, a->failure ? AUTOMOUNT_MAINTAINANCE : AUTOMOUNT_DEAD); | |
225 | } | |
226 | ||
227 | static int open_dev_autofs(Manager *m) { | |
228 | struct autofs_dev_ioctl param; | |
229 | ||
230 | assert(m); | |
231 | ||
232 | if (m->dev_autofs_fd >= 0) | |
233 | return m->dev_autofs_fd; | |
234 | ||
a16e1123 | 235 | if ((m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY)) < 0) { |
8d567588 LP |
236 | log_error("Failed to open /dev/autofs: %s", strerror(errno)); |
237 | return -errno; | |
238 | } | |
239 | ||
240 | init_autofs_dev_ioctl(¶m); | |
241 | if (ioctl(m->dev_autofs_fd, AUTOFS_DEV_IOCTL_VERSION, ¶m) < 0) { | |
242 | close_nointr_nofail(m->dev_autofs_fd); | |
243 | m->dev_autofs_fd = -1; | |
244 | return -errno; | |
245 | } | |
246 | ||
247 | log_debug("Autofs kernel version %i.%i", param.ver_major, param.ver_minor); | |
248 | ||
249 | return m->dev_autofs_fd; | |
250 | } | |
251 | ||
252 | static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) { | |
253 | struct autofs_dev_ioctl *param; | |
254 | size_t l; | |
255 | int r; | |
256 | ||
257 | assert(dev_autofs_fd >= 0); | |
258 | assert(where); | |
259 | ||
260 | l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1; | |
261 | ||
262 | if (!(param = malloc(l))) | |
263 | return -ENOMEM; | |
264 | ||
265 | init_autofs_dev_ioctl(param); | |
266 | param->size = l; | |
267 | param->ioctlfd = -1; | |
268 | param->openmount.devid = devid; | |
269 | strcpy(param->path, where); | |
270 | ||
271 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) { | |
272 | r = -errno; | |
273 | goto finish; | |
274 | } | |
275 | ||
276 | if (param->ioctlfd < 0) { | |
277 | r = -EIO; | |
278 | goto finish; | |
279 | } | |
280 | ||
a16e1123 | 281 | fd_cloexec(param->ioctlfd, true); |
8d567588 LP |
282 | r = param->ioctlfd; |
283 | ||
284 | finish: | |
285 | free(param); | |
286 | return r; | |
287 | } | |
288 | ||
289 | static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) { | |
290 | uint32_t major, minor; | |
291 | struct autofs_dev_ioctl param; | |
292 | ||
293 | assert(dev_autofs_fd >= 0); | |
294 | assert(ioctl_fd >= 0); | |
295 | ||
296 | init_autofs_dev_ioctl(¶m); | |
297 | param.ioctlfd = ioctl_fd; | |
298 | ||
299 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOVER, ¶m) < 0) | |
300 | return -errno; | |
301 | ||
302 | major = param.protover.version; | |
303 | ||
304 | init_autofs_dev_ioctl(¶m); | |
305 | param.ioctlfd = ioctl_fd; | |
306 | ||
307 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_PROTOSUBVER, ¶m) < 0) | |
308 | return -errno; | |
309 | ||
310 | minor = param.protosubver.sub_version; | |
311 | ||
312 | log_debug("Autofs protocol version %i.%i", major, minor); | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static int autofs_set_timeout(int dev_autofs_fd, int ioctl_fd, time_t sec) { | |
317 | struct autofs_dev_ioctl param; | |
318 | ||
319 | assert(dev_autofs_fd >= 0); | |
320 | assert(ioctl_fd >= 0); | |
321 | ||
322 | init_autofs_dev_ioctl(¶m); | |
323 | param.ioctlfd = ioctl_fd; | |
324 | param.timeout.timeout = sec; | |
325 | ||
326 | if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_TIMEOUT, ¶m) < 0) | |
327 | return -errno; | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | static int autofs_send_ready(int dev_autofs_fd, int ioctl_fd, uint32_t token, int status) { | |
333 | struct autofs_dev_ioctl param; | |
334 | ||
335 | assert(dev_autofs_fd >= 0); | |
336 | assert(ioctl_fd >= 0); | |
337 | ||
338 | init_autofs_dev_ioctl(¶m); | |
339 | param.ioctlfd = ioctl_fd; | |
340 | ||
341 | if (status) { | |
342 | param.fail.token = token; | |
343 | param.fail.status = status; | |
344 | } else | |
345 | param.ready.token = token; | |
346 | ||
347 | if (ioctl(dev_autofs_fd, status ? AUTOFS_DEV_IOCTL_FAIL : AUTOFS_DEV_IOCTL_READY, ¶m) < 0) | |
348 | return -errno; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | int automount_send_ready(Automount *a, int status) { | |
354 | int ioctl_fd, r; | |
355 | unsigned token; | |
356 | ||
357 | assert(a); | |
358 | assert(status <= 0); | |
359 | ||
360 | if (set_isempty(a->tokens)) | |
361 | return 0; | |
362 | ||
363 | if ((ioctl_fd = open_ioctl_fd(UNIT(a)->meta.manager->dev_autofs_fd, a->where, a->dev_id)) < 0) { | |
364 | r = ioctl_fd; | |
365 | goto fail; | |
366 | } | |
367 | ||
368 | if (status) | |
369 | log_debug("Sending failure: %s", strerror(-status)); | |
370 | else | |
371 | log_debug("Sending success."); | |
372 | ||
373 | /* Autofs thankfully does not hand out 0 as a token */ | |
374 | while ((token = PTR_TO_UINT(set_steal_first(a->tokens)))) { | |
375 | int k; | |
376 | ||
377 | /* Autofs fun fact II: | |
378 | * | |
379 | * if you pass a positive status code here, the kernel will | |
380 | * freeze! Yay! */ | |
381 | ||
382 | if ((k = autofs_send_ready(UNIT(a)->meta.manager->dev_autofs_fd, | |
383 | ioctl_fd, | |
384 | token, | |
385 | status)) < 0) | |
386 | r = k; | |
387 | } | |
388 | ||
389 | r = 0; | |
390 | ||
391 | fail: | |
392 | if (ioctl_fd >= 0) | |
393 | close_nointr_nofail(ioctl_fd); | |
394 | ||
395 | return r; | |
396 | } | |
397 | ||
398 | static void automount_enter_waiting(Automount *a) { | |
399 | int p[2] = { -1, -1 }; | |
400 | char name[32], options[128]; | |
401 | bool mounted = false; | |
402 | int r, ioctl_fd = -1, dev_autofs_fd; | |
403 | struct stat st; | |
404 | ||
405 | assert(a); | |
406 | assert(a->pipe_fd < 0); | |
407 | assert(a->where); | |
408 | ||
409 | if (a->tokens) | |
410 | set_clear(a->tokens); | |
8d567588 LP |
411 | |
412 | if ((dev_autofs_fd = open_dev_autofs(UNIT(a)->meta.manager)) < 0) { | |
413 | r = dev_autofs_fd; | |
414 | goto fail; | |
415 | } | |
416 | ||
417 | /* We knowingly ignore the results of this call */ | |
418 | mkdir_p(a->where, 0555); | |
419 | ||
a16e1123 | 420 | if (pipe2(p, O_NONBLOCK|O_CLOEXEC) < 0) { |
8d567588 LP |
421 | r = -errno; |
422 | goto fail; | |
423 | } | |
424 | ||
425 | snprintf(options, sizeof(options), "fd=%i,pgrp=%u,minproto=5,maxproto=5,direct", p[1], (unsigned) getpgrp()); | |
426 | char_array_0(options); | |
427 | ||
428 | snprintf(name, sizeof(name), "systemd-%u", (unsigned) getpid()); | |
429 | char_array_0(name); | |
430 | ||
431 | if (mount(name, a->where, "autofs", 0, options) < 0) { | |
432 | r = -errno; | |
433 | goto fail; | |
434 | } | |
435 | ||
436 | mounted = true; | |
437 | ||
438 | close_nointr_nofail(p[1]); | |
439 | p[1] = -1; | |
440 | ||
441 | if (stat(a->where, &st) < 0) { | |
442 | r = -errno; | |
443 | goto fail; | |
444 | } | |
445 | ||
446 | if ((ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev)) < 0) { | |
447 | r = ioctl_fd; | |
448 | goto fail; | |
449 | } | |
450 | ||
451 | if ((r = autofs_protocol(dev_autofs_fd, ioctl_fd)) < 0) | |
452 | goto fail; | |
453 | ||
454 | if ((r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, 300)) < 0) | |
455 | goto fail; | |
456 | ||
457 | /* Autofs fun fact: | |
458 | * | |
459 | * Unless we close the ioctl fd here, for some weird reason | |
460 | * the direct mount will not receive events from the | |
461 | * kernel. */ | |
462 | ||
463 | close_nointr_nofail(ioctl_fd); | |
464 | ioctl_fd = -1; | |
465 | ||
466 | if ((r = unit_watch_fd(UNIT(a), p[0], EPOLLIN, &a->pipe_watch)) < 0) | |
467 | goto fail; | |
468 | ||
469 | a->pipe_fd = p[0]; | |
470 | a->dev_id = st.st_dev; | |
471 | ||
472 | automount_set_state(a, AUTOMOUNT_WAITING); | |
473 | ||
474 | return; | |
475 | ||
476 | fail: | |
477 | assert_se(close_pipe(p) == 0); | |
478 | ||
479 | if (ioctl_fd >= 0) | |
480 | close_nointr_nofail(ioctl_fd); | |
481 | ||
482 | if (mounted) | |
483 | repeat_unmout(a->where); | |
484 | ||
485 | log_error("Failed to initialize automounter: %s", strerror(-r)); | |
486 | automount_enter_dead(a, false); | |
487 | } | |
488 | ||
489 | static void automount_enter_runnning(Automount *a) { | |
490 | int r; | |
491 | struct stat st; | |
492 | ||
493 | assert(a); | |
494 | assert(a->mount); | |
495 | ||
496 | /* Before we do anything, let's see if somebody is playing games with us? */ | |
497 | ||
498 | if (stat(a->where, &st) < 0) { | |
499 | log_warning("%s failed stat automount point: %m", a->meta.id); | |
500 | goto fail; | |
501 | } | |
502 | ||
503 | if (!S_ISDIR(st.st_mode) || st.st_dev != a->dev_id) | |
504 | log_info("%s's automount point already active?", a->meta.id); | |
505 | else if ((r = manager_add_job(UNIT(a)->meta.manager, JOB_START, UNIT(a->mount), JOB_REPLACE, true, NULL)) < 0) { | |
506 | log_warning("%s failed to queue mount startup job: %s", a->meta.id, strerror(-r)); | |
507 | goto fail; | |
508 | } | |
509 | ||
510 | automount_set_state(a, AUTOMOUNT_RUNNING); | |
511 | return; | |
512 | ||
513 | fail: | |
514 | automount_enter_dead(a, false); | |
515 | } | |
516 | ||
517 | static int automount_start(Unit *u) { | |
518 | Automount *a = AUTOMOUNT(u); | |
519 | ||
520 | assert(a); | |
521 | ||
522 | if (path_is_mount_point(a->where)) { | |
523 | log_error("Path %s is already a mount point, refusing start for %s", a->where, u->meta.id); | |
524 | return -EEXIST; | |
525 | } | |
526 | ||
527 | assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_MAINTAINANCE); | |
528 | ||
529 | a->failure = false; | |
530 | automount_enter_waiting(a); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | static int automount_stop(Unit *u) { | |
535 | Automount *a = AUTOMOUNT(u); | |
536 | ||
537 | assert(a); | |
538 | ||
539 | assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING); | |
540 | ||
541 | automount_enter_dead(a, true); | |
542 | return 0; | |
543 | } | |
544 | ||
a16e1123 LP |
545 | static int automount_serialize(Unit *u, FILE *f, FDSet *fds) { |
546 | Automount *a = AUTOMOUNT(u); | |
547 | void *p; | |
548 | Iterator i; | |
549 | ||
550 | assert(a); | |
551 | assert(f); | |
552 | assert(fds); | |
553 | ||
554 | unit_serialize_item(u, f, "state", automount_state_to_string(a->state)); | |
555 | unit_serialize_item(u, f, "failure", yes_no(a->failure)); | |
556 | unit_serialize_item_format(u, f, "dev-id", "%u", (unsigned) a->dev_id); | |
557 | ||
558 | SET_FOREACH(p, a->tokens, i) | |
559 | unit_serialize_item_format(u, f, "token", "%u", PTR_TO_UINT(p)); | |
560 | ||
561 | if (a->pipe_fd >= 0) { | |
562 | int copy; | |
563 | ||
564 | if ((copy = fdset_put_dup(fds, a->pipe_fd)) < 0) | |
565 | return copy; | |
566 | ||
567 | unit_serialize_item_format(u, f, "pipe-fd", "%i", copy); | |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | static int automount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
574 | Automount *a = AUTOMOUNT(u); | |
575 | int r; | |
576 | ||
577 | assert(a); | |
578 | assert(fds); | |
579 | ||
580 | if (streq(key, "state")) { | |
581 | AutomountState state; | |
582 | ||
583 | if ((state = automount_state_from_string(value)) < 0) | |
584 | log_debug("Failed to parse state value %s", value); | |
585 | else | |
586 | a->deserialized_state = state; | |
587 | } else if (streq(key, "failure")) { | |
588 | int b; | |
589 | ||
590 | if ((b = parse_boolean(value)) < 0) | |
591 | log_debug("Failed to parse failure value %s", value); | |
592 | else | |
593 | a->failure = b || a->failure; | |
594 | } else if (streq(key, "dev-id")) { | |
595 | unsigned d; | |
596 | ||
597 | if (safe_atou(value, &d) < 0) | |
598 | log_debug("Failed to parse dev-id value %s", value); | |
599 | else | |
600 | a->dev_id = (unsigned) d; | |
601 | } else if (streq(key, "token")) { | |
602 | unsigned token; | |
603 | ||
604 | if (safe_atou(value, &token) < 0) | |
605 | log_debug("Failed to parse token value %s", value); | |
606 | else { | |
607 | if (!a->tokens) | |
608 | if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func))) | |
609 | return -ENOMEM; | |
610 | ||
611 | if ((r = set_put(a->tokens, UINT_TO_PTR(token))) < 0) | |
612 | return r; | |
613 | } | |
614 | } else if (streq(key, "pipe-fd")) { | |
615 | int fd; | |
616 | ||
617 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
618 | log_debug("Failed to parse pipe-fd value %s", value); | |
619 | else { | |
620 | if (a->pipe_fd >= 0) | |
621 | close_nointr_nofail(a->pipe_fd); | |
622 | ||
623 | a->pipe_fd = fdset_remove(fds, fd); | |
624 | } | |
625 | } else | |
626 | log_debug("Unknown serialization key '%s'", key); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
87f0e418 | 631 | static UnitActiveState automount_active_state(Unit *u) { |
a16e1123 | 632 | assert(u); |
87f0e418 | 633 | |
e537352b | 634 | return state_translation_table[AUTOMOUNT(u)->state]; |
5cb5a6ff LP |
635 | } |
636 | ||
10a94420 LP |
637 | static const char *automount_sub_state_to_string(Unit *u) { |
638 | assert(u); | |
639 | ||
a16e1123 | 640 | return automount_state_to_string(AUTOMOUNT(u)->state); |
10a94420 LP |
641 | } |
642 | ||
701cc384 LP |
643 | static bool automount_check_gc(Unit *u) { |
644 | Automount *a = AUTOMOUNT(u); | |
645 | ||
646 | assert(a); | |
647 | ||
648 | return UNIT_VTABLE(UNIT(a->mount))->check_gc(UNIT(a->mount)); | |
649 | } | |
650 | ||
8d567588 | 651 | static void automount_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { |
701cc384 | 652 | Automount *a = AUTOMOUNT(u); |
8d567588 LP |
653 | union autofs_v5_packet_union packet; |
654 | ssize_t l; | |
655 | int r; | |
656 | ||
8d567588 LP |
657 | assert(a); |
658 | assert(fd == a->pipe_fd); | |
659 | ||
660 | if (events != EPOLLIN) { | |
661 | log_error("Got invalid poll event on pipe."); | |
662 | goto fail; | |
663 | } | |
664 | ||
665 | if ((l = loop_read(a->pipe_fd, &packet, sizeof(packet))) != sizeof(packet)) { | |
666 | log_error("Invalid read from pipe: %s", l < 0 ? strerror(-l) : "short read"); | |
667 | goto fail; | |
668 | } | |
669 | ||
670 | switch (packet.hdr.type) { | |
671 | ||
672 | case autofs_ptype_missing_direct: | |
673 | log_debug("Got direct mount request for %s", packet.v5_packet.name); | |
674 | ||
a16e1123 LP |
675 | if (!a->tokens) |
676 | if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func))) { | |
677 | log_error("Failed to allocate token set."); | |
678 | goto fail; | |
679 | } | |
680 | ||
8d567588 LP |
681 | if ((r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token))) < 0) { |
682 | log_error("Failed to remember token: %s", strerror(-r)); | |
683 | goto fail; | |
684 | } | |
685 | ||
686 | automount_enter_runnning(a); | |
687 | break; | |
688 | ||
689 | default: | |
690 | log_error("Received unknown automount request %i", packet.hdr.type); | |
691 | break; | |
692 | } | |
693 | ||
694 | return; | |
695 | ||
696 | fail: | |
697 | automount_enter_dead(a, false); | |
698 | } | |
699 | ||
700 | static void automount_shutdown(Manager *m) { | |
701 | assert(m); | |
702 | ||
703 | if (m->dev_autofs_fd >= 0) | |
704 | close_nointr_nofail(m->dev_autofs_fd); | |
705 | } | |
706 | ||
a16e1123 LP |
707 | static const char* const automount_state_table[_AUTOMOUNT_STATE_MAX] = { |
708 | [AUTOMOUNT_DEAD] = "dead", | |
709 | [AUTOMOUNT_WAITING] = "waiting", | |
710 | [AUTOMOUNT_RUNNING] = "running", | |
711 | [AUTOMOUNT_MAINTAINANCE] = "maintainance" | |
712 | }; | |
713 | ||
714 | DEFINE_STRING_TABLE_LOOKUP(automount_state, AutomountState); | |
715 | ||
87f0e418 | 716 | const UnitVTable automount_vtable = { |
8d567588 | 717 | .suffix = ".automount", |
5cb5a6ff | 718 | |
e537352b | 719 | .no_alias = true, |
8d567588 | 720 | .no_instances = true, |
e537352b | 721 | |
034c6ed7 | 722 | .init = automount_init, |
e537352b | 723 | .load = automount_load, |
034c6ed7 | 724 | .done = automount_done, |
5cb5a6ff | 725 | |
a16e1123 LP |
726 | .coldplug = automount_coldplug, |
727 | ||
034c6ed7 | 728 | .dump = automount_dump, |
5cb5a6ff | 729 | |
8d567588 LP |
730 | .start = automount_start, |
731 | .stop = automount_stop, | |
732 | ||
a16e1123 LP |
733 | .serialize = automount_serialize, |
734 | .deserialize_item = automount_deserialize_item, | |
735 | ||
10a94420 | 736 | .active_state = automount_active_state, |
8d567588 LP |
737 | .sub_state_to_string = automount_sub_state_to_string, |
738 | ||
701cc384 LP |
739 | .check_gc = automount_check_gc, |
740 | ||
8d567588 LP |
741 | .fd_event = automount_fd_event, |
742 | ||
4139c1b2 LP |
743 | .bus_message_handler = bus_automount_message_handler, |
744 | ||
8d567588 | 745 | .shutdown = automount_shutdown |
5cb5a6ff | 746 | }; |