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Commit | Line | Data |
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7fafc032 | 1 | /* |
1298001e | 2 | * Copyright (C) 2004-2012 Kay Sievers <kay@vrfy.org> |
2f6cbd19 | 3 | * Copyright (C) 2004 Chris Friesen <chris_friesen@sympatico.ca> |
bb38678e SJR |
4 | * Copyright (C) 2009 Canonical Ltd. |
5 | * Copyright (C) 2009 Scott James Remnant <scott@netsplit.com> | |
7fafc032 | 6 | * |
55e9959b KS |
7 | * This program is free software: you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 2 of the License, or | |
10 | * (at your option) any later version. | |
7fafc032 | 11 | * |
55e9959b KS |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
7fafc032 | 16 | * |
55e9959b KS |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
7fafc032 KS |
19 | */ |
20 | ||
a695feae | 21 | #include <stddef.h> |
7fafc032 KS |
22 | #include <signal.h> |
23 | #include <unistd.h> | |
24 | #include <errno.h> | |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
c3804728 | 27 | #include <stdbool.h> |
7fafc032 | 28 | #include <string.h> |
085cce37 | 29 | #include <ctype.h> |
085cce37 | 30 | #include <fcntl.h> |
0b3dfb3d | 31 | #include <time.h> |
b52a01ee | 32 | #include <getopt.h> |
78230c0d | 33 | #include <dirent.h> |
3ebdb81e | 34 | #include <sys/file.h> |
820fc48f | 35 | #include <sys/time.h> |
1e03b754 KS |
36 | #include <sys/prctl.h> |
37 | #include <sys/socket.h> | |
a65aa40f | 38 | #include <sys/un.h> |
1e03b754 | 39 | #include <sys/signalfd.h> |
ff2c503d | 40 | #include <sys/epoll.h> |
ede34445 | 41 | #include <sys/mount.h> |
3210a72b | 42 | #include <sys/poll.h> |
138068d6 | 43 | #include <sys/wait.h> |
dc117daa | 44 | #include <sys/stat.h> |
c895fd00 | 45 | #include <sys/ioctl.h> |
01618658 | 46 | #include <sys/inotify.h> |
761dfddc | 47 | #include <sys/utsname.h> |
7fafc032 KS |
48 | |
49 | #include "udev.h" | |
f3a740a5 | 50 | #include "udev-util.h" |
4c83d994 | 51 | #include "rtnl-util.h" |
392ef7a2 | 52 | #include "sd-daemon.h" |
194bbe33 | 53 | #include "cgroup-util.h" |
5ba2dc25 | 54 | #include "dev-setup.h" |
a5c32cff | 55 | #include "fileio.h" |
7fafc032 | 56 | |
80df994c | 57 | void udev_main_log(struct udev *udev, int priority, |
912541b0 | 58 | const char *file, int line, const char *fn, |
9ec6e95b | 59 | const char *format, va_list args) { |
baa30fbc | 60 | log_metav(priority, file, line, fn, format, args); |
7d563a17 KS |
61 | } |
62 | ||
d7ddce18 | 63 | static struct udev_rules *rules; |
d59f11e1 | 64 | static struct udev_ctrl *udev_ctrl; |
1e03b754 | 65 | static struct udev_monitor *monitor; |
3c6ee190 | 66 | static int worker_watch[2] = { -1, -1 }; |
ff2c503d KS |
67 | static int fd_signal = -1; |
68 | static int fd_ep = -1; | |
69 | static int fd_inotify = -1; | |
c3804728 | 70 | static bool stop_exec_queue; |
7c85d636 | 71 | static bool reload; |
87d55ff6 | 72 | static int children; |
bba7a484 TG |
73 | static bool arg_debug = false; |
74 | static int arg_daemonize = false; | |
75 | static int arg_resolve_names = 1; | |
76 | static int arg_children_max; | |
77 | static int arg_exec_delay; | |
78 | static usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC; | |
79 | static usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3; | |
2181d30a | 80 | static sigset_t sigmask_orig; |
ff2c503d KS |
81 | static UDEV_LIST(event_list); |
82 | static UDEV_LIST(worker_list); | |
e3dc56a2 | 83 | static char *udev_cgroup; |
c3804728 | 84 | static bool udev_exit; |
1e03b754 | 85 | |
1e03b754 | 86 | enum event_state { |
912541b0 KS |
87 | EVENT_UNDEF, |
88 | EVENT_QUEUED, | |
89 | EVENT_RUNNING, | |
1e03b754 KS |
90 | }; |
91 | ||
92 | struct event { | |
912541b0 KS |
93 | struct udev_list_node node; |
94 | struct udev *udev; | |
95 | struct udev_device *dev; | |
96 | enum event_state state; | |
97 | int exitcode; | |
98 | unsigned long long int delaying_seqnum; | |
99 | unsigned long long int seqnum; | |
100 | const char *devpath; | |
101 | size_t devpath_len; | |
102 | const char *devpath_old; | |
103 | dev_t devnum; | |
912541b0 | 104 | int ifindex; |
ea6039a3 | 105 | bool is_block; |
1e03b754 KS |
106 | }; |
107 | ||
9ec6e95b | 108 | static inline struct event *node_to_event(struct udev_list_node *node) { |
b27ee00b | 109 | return container_of(node, struct event, node); |
1e03b754 KS |
110 | } |
111 | ||
ff2c503d KS |
112 | static void event_queue_cleanup(struct udev *udev, enum event_state type); |
113 | ||
1e03b754 | 114 | enum worker_state { |
912541b0 KS |
115 | WORKER_UNDEF, |
116 | WORKER_RUNNING, | |
117 | WORKER_IDLE, | |
118 | WORKER_KILLED, | |
1e03b754 KS |
119 | }; |
120 | ||
121 | struct worker { | |
912541b0 KS |
122 | struct udev_list_node node; |
123 | struct udev *udev; | |
124 | int refcount; | |
125 | pid_t pid; | |
126 | struct udev_monitor *monitor; | |
127 | enum worker_state state; | |
128 | struct event *event; | |
40fe8b11 | 129 | usec_t event_start_usec; |
67117413 | 130 | bool event_warned; |
1e03b754 KS |
131 | }; |
132 | ||
133 | /* passed from worker to main process */ | |
134 | struct worker_message { | |
912541b0 KS |
135 | pid_t pid; |
136 | int exitcode; | |
1e03b754 KS |
137 | }; |
138 | ||
9ec6e95b | 139 | static inline struct worker *node_to_worker(struct udev_list_node *node) { |
b27ee00b | 140 | return container_of(node, struct worker, node); |
7e027927 KS |
141 | } |
142 | ||
9ec6e95b | 143 | static void event_queue_delete(struct event *event) { |
912541b0 | 144 | udev_list_node_remove(&event->node); |
912541b0 KS |
145 | udev_device_unref(event->dev); |
146 | free(event); | |
aa8734ff | 147 | } |
7a770250 | 148 | |
9ec6e95b | 149 | static struct worker *worker_ref(struct worker *worker) { |
912541b0 KS |
150 | worker->refcount++; |
151 | return worker; | |
bc113de9 KS |
152 | } |
153 | ||
9ec6e95b | 154 | static void worker_cleanup(struct worker *worker) { |
912541b0 KS |
155 | udev_list_node_remove(&worker->node); |
156 | udev_monitor_unref(worker->monitor); | |
157 | children--; | |
158 | free(worker); | |
ff2c503d KS |
159 | } |
160 | ||
9ec6e95b | 161 | static void worker_unref(struct worker *worker) { |
912541b0 KS |
162 | worker->refcount--; |
163 | if (worker->refcount > 0) | |
164 | return; | |
9f6445e3 | 165 | log_debug("worker [%u] cleaned up", worker->pid); |
912541b0 | 166 | worker_cleanup(worker); |
ff2c503d KS |
167 | } |
168 | ||
9ec6e95b | 169 | static void worker_list_cleanup(struct udev *udev) { |
912541b0 | 170 | struct udev_list_node *loop, *tmp; |
ff2c503d | 171 | |
912541b0 KS |
172 | udev_list_node_foreach_safe(loop, tmp, &worker_list) { |
173 | struct worker *worker = node_to_worker(loop); | |
ff2c503d | 174 | |
912541b0 KS |
175 | worker_cleanup(worker); |
176 | } | |
fc465079 KS |
177 | } |
178 | ||
9ec6e95b | 179 | static void worker_new(struct event *event) { |
912541b0 KS |
180 | struct udev *udev = event->udev; |
181 | struct worker *worker; | |
182 | struct udev_monitor *worker_monitor; | |
183 | pid_t pid; | |
184 | ||
185 | /* listen for new events */ | |
186 | worker_monitor = udev_monitor_new_from_netlink(udev, NULL); | |
187 | if (worker_monitor == NULL) | |
188 | return; | |
189 | /* allow the main daemon netlink address to send devices to the worker */ | |
190 | udev_monitor_allow_unicast_sender(worker_monitor, monitor); | |
191 | udev_monitor_enable_receiving(worker_monitor); | |
192 | ||
955d98c9 | 193 | worker = new0(struct worker, 1); |
912541b0 KS |
194 | if (worker == NULL) { |
195 | udev_monitor_unref(worker_monitor); | |
196 | return; | |
197 | } | |
198 | /* worker + event reference */ | |
199 | worker->refcount = 2; | |
200 | worker->udev = udev; | |
201 | ||
202 | pid = fork(); | |
203 | switch (pid) { | |
204 | case 0: { | |
205 | struct udev_device *dev = NULL; | |
206 | int fd_monitor; | |
4c83d994 | 207 | _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL; |
912541b0 KS |
208 | struct epoll_event ep_signal, ep_monitor; |
209 | sigset_t mask; | |
210 | int rc = EXIT_SUCCESS; | |
211 | ||
43095991 | 212 | /* take initial device from queue */ |
912541b0 KS |
213 | dev = event->dev; |
214 | event->dev = NULL; | |
215 | ||
216 | free(worker); | |
217 | worker_list_cleanup(udev); | |
218 | event_queue_cleanup(udev, EVENT_UNDEF); | |
912541b0 KS |
219 | udev_monitor_unref(monitor); |
220 | udev_ctrl_unref(udev_ctrl); | |
221 | close(fd_signal); | |
222 | close(fd_ep); | |
223 | close(worker_watch[READ_END]); | |
224 | ||
225 | sigfillset(&mask); | |
226 | fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); | |
227 | if (fd_signal < 0) { | |
9f6445e3 | 228 | log_error("error creating signalfd %m"); |
912541b0 KS |
229 | rc = 2; |
230 | goto out; | |
231 | } | |
232 | ||
233 | fd_ep = epoll_create1(EPOLL_CLOEXEC); | |
234 | if (fd_ep < 0) { | |
9f6445e3 | 235 | log_error("error creating epoll fd: %m"); |
912541b0 KS |
236 | rc = 3; |
237 | goto out; | |
238 | } | |
239 | ||
29804cc1 | 240 | memzero(&ep_signal, sizeof(struct epoll_event)); |
912541b0 KS |
241 | ep_signal.events = EPOLLIN; |
242 | ep_signal.data.fd = fd_signal; | |
243 | ||
244 | fd_monitor = udev_monitor_get_fd(worker_monitor); | |
29804cc1 | 245 | memzero(&ep_monitor, sizeof(struct epoll_event)); |
912541b0 KS |
246 | ep_monitor.events = EPOLLIN; |
247 | ep_monitor.data.fd = fd_monitor; | |
248 | ||
249 | if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 || | |
250 | epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_monitor, &ep_monitor) < 0) { | |
9f6445e3 | 251 | log_error("fail to add fds to epoll: %m"); |
912541b0 KS |
252 | rc = 4; |
253 | goto out; | |
254 | } | |
255 | ||
256 | /* request TERM signal if parent exits */ | |
257 | prctl(PR_SET_PDEATHSIG, SIGTERM); | |
258 | ||
145dae7e | 259 | /* reset OOM score, we only protect the main daemon */ |
574d5f2d | 260 | write_string_file("/proc/self/oom_score_adj", "0"); |
145dae7e | 261 | |
912541b0 KS |
262 | for (;;) { |
263 | struct udev_event *udev_event; | |
264 | struct worker_message msg; | |
3ebdb81e | 265 | int fd_lock = -1; |
bf9bead1 | 266 | int err = 0; |
912541b0 | 267 | |
9f6445e3 | 268 | log_debug("seq %llu running", udev_device_get_seqnum(dev)); |
912541b0 KS |
269 | udev_event = udev_event_new(dev); |
270 | if (udev_event == NULL) { | |
271 | rc = 5; | |
272 | goto out; | |
273 | } | |
274 | ||
275 | /* needed for SIGCHLD/SIGTERM in spawn() */ | |
276 | udev_event->fd_signal = fd_signal; | |
277 | ||
bba7a484 TG |
278 | if (arg_exec_delay > 0) |
279 | udev_event->exec_delay = arg_exec_delay; | |
912541b0 | 280 | |
3ebdb81e | 281 | /* |
2e5b17d0 | 282 | * Take a shared lock on the device node; this establishes |
3ebdb81e | 283 | * a concept of device "ownership" to serialize device |
2e5b17d0 | 284 | * access. External processes holding an exclusive lock will |
3ebdb81e | 285 | * cause udev to skip the event handling; in the case udev |
2e5b17d0 | 286 | * acquired the lock, the external process can block until |
3ebdb81e KS |
287 | * udev has finished its event handling. |
288 | */ | |
2e5b17d0 KS |
289 | if (!streq_ptr(udev_device_get_action(dev), "remove") && |
290 | streq_ptr("block", udev_device_get_subsystem(dev)) && | |
291 | !startswith(udev_device_get_sysname(dev), "dm-") && | |
292 | !startswith(udev_device_get_sysname(dev), "md")) { | |
3ebdb81e KS |
293 | struct udev_device *d = dev; |
294 | ||
295 | if (streq_ptr("partition", udev_device_get_devtype(d))) | |
296 | d = udev_device_get_parent(d); | |
297 | ||
298 | if (d) { | |
299 | fd_lock = open(udev_device_get_devnode(d), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); | |
300 | if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) { | |
301 | log_debug("Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d)); | |
302 | err = -EWOULDBLOCK; | |
3d06f418 | 303 | fd_lock = safe_close(fd_lock); |
3ebdb81e KS |
304 | goto skip; |
305 | } | |
306 | } | |
307 | } | |
308 | ||
4c83d994 TG |
309 | /* needed for renaming netifs */ |
310 | udev_event->rtnl = rtnl; | |
311 | ||
912541b0 | 312 | /* apply rules, create node, symlinks */ |
bba7a484 | 313 | udev_event_execute_rules(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, rules, &sigmask_orig); |
912541b0 | 314 | |
bba7a484 | 315 | udev_event_execute_run(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, &sigmask_orig); |
912541b0 | 316 | |
4c83d994 TG |
317 | /* in case rtnl was initialized */ |
318 | rtnl = sd_rtnl_ref(udev_event->rtnl); | |
319 | ||
912541b0 | 320 | /* apply/restore inotify watch */ |
bf9bead1 | 321 | if (udev_event->inotify_watch) { |
912541b0 KS |
322 | udev_watch_begin(udev, dev); |
323 | udev_device_update_db(dev); | |
324 | } | |
325 | ||
3d06f418 | 326 | safe_close(fd_lock); |
3ebdb81e | 327 | |
912541b0 KS |
328 | /* send processed event back to libudev listeners */ |
329 | udev_monitor_send_device(worker_monitor, NULL, dev); | |
330 | ||
3ebdb81e | 331 | skip: |
912541b0 | 332 | /* send udevd the result of the event execution */ |
29804cc1 | 333 | memzero(&msg, sizeof(struct worker_message)); |
3ebdb81e | 334 | msg.exitcode = err; |
912541b0 KS |
335 | msg.pid = getpid(); |
336 | send(worker_watch[WRITE_END], &msg, sizeof(struct worker_message), 0); | |
337 | ||
9f6445e3 | 338 | log_debug("seq %llu processed with %i", udev_device_get_seqnum(dev), err); |
912541b0 KS |
339 | |
340 | udev_device_unref(dev); | |
341 | dev = NULL; | |
342 | ||
73814ca2 CW |
343 | if (udev_event->sigterm) { |
344 | udev_event_unref(udev_event); | |
47e737dc | 345 | goto out; |
73814ca2 CW |
346 | } |
347 | ||
348 | udev_event_unref(udev_event); | |
47e737dc | 349 | |
912541b0 KS |
350 | /* wait for more device messages from main udevd, or term signal */ |
351 | while (dev == NULL) { | |
352 | struct epoll_event ev[4]; | |
353 | int fdcount; | |
354 | int i; | |
355 | ||
8fef0ff2 | 356 | fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1); |
912541b0 KS |
357 | if (fdcount < 0) { |
358 | if (errno == EINTR) | |
359 | continue; | |
9f6445e3 | 360 | log_error("failed to poll: %m"); |
912541b0 KS |
361 | goto out; |
362 | } | |
363 | ||
364 | for (i = 0; i < fdcount; i++) { | |
365 | if (ev[i].data.fd == fd_monitor && ev[i].events & EPOLLIN) { | |
366 | dev = udev_monitor_receive_device(worker_monitor); | |
367 | break; | |
368 | } else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) { | |
369 | struct signalfd_siginfo fdsi; | |
370 | ssize_t size; | |
371 | ||
372 | size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo)); | |
373 | if (size != sizeof(struct signalfd_siginfo)) | |
374 | continue; | |
375 | switch (fdsi.ssi_signo) { | |
376 | case SIGTERM: | |
377 | goto out; | |
378 | } | |
379 | } | |
380 | } | |
381 | } | |
382 | } | |
82063a88 | 383 | out: |
912541b0 | 384 | udev_device_unref(dev); |
3d06f418 KS |
385 | safe_close(fd_signal); |
386 | safe_close(fd_ep); | |
912541b0 KS |
387 | close(fd_inotify); |
388 | close(worker_watch[WRITE_END]); | |
389 | udev_rules_unref(rules); | |
e64fae55 | 390 | udev_builtin_exit(udev); |
912541b0 KS |
391 | udev_monitor_unref(worker_monitor); |
392 | udev_unref(udev); | |
baa30fbc | 393 | log_close(); |
912541b0 KS |
394 | exit(rc); |
395 | } | |
396 | case -1: | |
397 | udev_monitor_unref(worker_monitor); | |
398 | event->state = EVENT_QUEUED; | |
399 | free(worker); | |
9f6445e3 | 400 | log_error("fork of child failed: %m"); |
912541b0 KS |
401 | break; |
402 | default: | |
403 | /* close monitor, but keep address around */ | |
404 | udev_monitor_disconnect(worker_monitor); | |
405 | worker->monitor = worker_monitor; | |
406 | worker->pid = pid; | |
407 | worker->state = WORKER_RUNNING; | |
40fe8b11 | 408 | worker->event_start_usec = now(CLOCK_MONOTONIC); |
67117413 | 409 | worker->event_warned = false; |
912541b0 KS |
410 | worker->event = event; |
411 | event->state = EVENT_RUNNING; | |
412 | udev_list_node_append(&worker->node, &worker_list); | |
413 | children++; | |
9f6445e3 | 414 | log_debug("seq %llu forked new worker [%u]", udev_device_get_seqnum(event->dev), pid); |
912541b0 KS |
415 | break; |
416 | } | |
7fafc032 KS |
417 | } |
418 | ||
9ec6e95b | 419 | static void event_run(struct event *event) { |
912541b0 KS |
420 | struct udev_list_node *loop; |
421 | ||
422 | udev_list_node_foreach(loop, &worker_list) { | |
423 | struct worker *worker = node_to_worker(loop); | |
424 | ssize_t count; | |
425 | ||
426 | if (worker->state != WORKER_IDLE) | |
427 | continue; | |
428 | ||
429 | count = udev_monitor_send_device(monitor, worker->monitor, event->dev); | |
430 | if (count < 0) { | |
9f6445e3 | 431 | log_error("worker [%u] did not accept message %zi (%m), kill it", worker->pid, count); |
912541b0 KS |
432 | kill(worker->pid, SIGKILL); |
433 | worker->state = WORKER_KILLED; | |
434 | continue; | |
435 | } | |
436 | worker_ref(worker); | |
437 | worker->event = event; | |
438 | worker->state = WORKER_RUNNING; | |
40fe8b11 | 439 | worker->event_start_usec = now(CLOCK_MONOTONIC); |
67117413 | 440 | worker->event_warned = false; |
912541b0 KS |
441 | event->state = EVENT_RUNNING; |
442 | return; | |
443 | } | |
444 | ||
bba7a484 TG |
445 | if (children >= arg_children_max) { |
446 | if (arg_children_max > 1) | |
9f6445e3 | 447 | log_debug("maximum number (%i) of children reached", children); |
912541b0 KS |
448 | return; |
449 | } | |
450 | ||
451 | /* start new worker and pass initial device */ | |
452 | worker_new(event); | |
1e03b754 KS |
453 | } |
454 | ||
9ec6e95b | 455 | static int event_queue_insert(struct udev_device *dev) { |
912541b0 KS |
456 | struct event *event; |
457 | ||
955d98c9 | 458 | event = new0(struct event, 1); |
912541b0 KS |
459 | if (event == NULL) |
460 | return -1; | |
461 | ||
462 | event->udev = udev_device_get_udev(dev); | |
463 | event->dev = dev; | |
464 | event->seqnum = udev_device_get_seqnum(dev); | |
465 | event->devpath = udev_device_get_devpath(dev); | |
466 | event->devpath_len = strlen(event->devpath); | |
467 | event->devpath_old = udev_device_get_devpath_old(dev); | |
468 | event->devnum = udev_device_get_devnum(dev); | |
ea6039a3 | 469 | event->is_block = streq("block", udev_device_get_subsystem(dev)); |
912541b0 KS |
470 | event->ifindex = udev_device_get_ifindex(dev); |
471 | ||
9f6445e3 | 472 | log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev), |
912541b0 KS |
473 | udev_device_get_action(dev), udev_device_get_subsystem(dev)); |
474 | ||
475 | event->state = EVENT_QUEUED; | |
476 | udev_list_node_append(&event->node, &event_list); | |
477 | return 0; | |
fc465079 KS |
478 | } |
479 | ||
9ec6e95b | 480 | static void worker_kill(struct udev *udev) { |
912541b0 | 481 | struct udev_list_node *loop; |
1e03b754 | 482 | |
912541b0 KS |
483 | udev_list_node_foreach(loop, &worker_list) { |
484 | struct worker *worker = node_to_worker(loop); | |
1e03b754 | 485 | |
912541b0 KS |
486 | if (worker->state == WORKER_KILLED) |
487 | continue; | |
1e03b754 | 488 | |
912541b0 KS |
489 | worker->state = WORKER_KILLED; |
490 | kill(worker->pid, SIGTERM); | |
491 | } | |
1e03b754 KS |
492 | } |
493 | ||
e3196993 | 494 | /* lookup event for identical, parent, child device */ |
9ec6e95b | 495 | static bool is_devpath_busy(struct event *event) { |
912541b0 KS |
496 | struct udev_list_node *loop; |
497 | size_t common; | |
498 | ||
499 | /* check if queue contains events we depend on */ | |
500 | udev_list_node_foreach(loop, &event_list) { | |
501 | struct event *loop_event = node_to_event(loop); | |
502 | ||
503 | /* we already found a later event, earlier can not block us, no need to check again */ | |
504 | if (loop_event->seqnum < event->delaying_seqnum) | |
505 | continue; | |
506 | ||
507 | /* event we checked earlier still exists, no need to check again */ | |
508 | if (loop_event->seqnum == event->delaying_seqnum) | |
509 | return true; | |
510 | ||
511 | /* found ourself, no later event can block us */ | |
512 | if (loop_event->seqnum >= event->seqnum) | |
513 | break; | |
514 | ||
515 | /* check major/minor */ | |
516 | if (major(event->devnum) != 0 && event->devnum == loop_event->devnum && event->is_block == loop_event->is_block) | |
517 | return true; | |
518 | ||
519 | /* check network device ifindex */ | |
520 | if (event->ifindex != 0 && event->ifindex == loop_event->ifindex) | |
521 | return true; | |
522 | ||
523 | /* check our old name */ | |
090be865 | 524 | if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) { |
912541b0 KS |
525 | event->delaying_seqnum = loop_event->seqnum; |
526 | return true; | |
527 | } | |
528 | ||
529 | /* compare devpath */ | |
530 | common = MIN(loop_event->devpath_len, event->devpath_len); | |
531 | ||
532 | /* one devpath is contained in the other? */ | |
533 | if (memcmp(loop_event->devpath, event->devpath, common) != 0) | |
534 | continue; | |
535 | ||
536 | /* identical device event found */ | |
537 | if (loop_event->devpath_len == event->devpath_len) { | |
538 | /* devices names might have changed/swapped in the meantime */ | |
539 | if (major(event->devnum) != 0 && (event->devnum != loop_event->devnum || event->is_block != loop_event->is_block)) | |
540 | continue; | |
541 | if (event->ifindex != 0 && event->ifindex != loop_event->ifindex) | |
542 | continue; | |
543 | event->delaying_seqnum = loop_event->seqnum; | |
544 | return true; | |
545 | } | |
546 | ||
547 | /* parent device event found */ | |
548 | if (event->devpath[common] == '/') { | |
549 | event->delaying_seqnum = loop_event->seqnum; | |
550 | return true; | |
551 | } | |
552 | ||
553 | /* child device event found */ | |
554 | if (loop_event->devpath[common] == '/') { | |
555 | event->delaying_seqnum = loop_event->seqnum; | |
556 | return true; | |
557 | } | |
558 | ||
559 | /* no matching device */ | |
560 | continue; | |
561 | } | |
562 | ||
563 | return false; | |
7fafc032 KS |
564 | } |
565 | ||
9ec6e95b | 566 | static void event_queue_start(struct udev *udev) { |
912541b0 | 567 | struct udev_list_node *loop; |
8ab44e3f | 568 | |
912541b0 KS |
569 | udev_list_node_foreach(loop, &event_list) { |
570 | struct event *event = node_to_event(loop); | |
0bc74ea7 | 571 | |
912541b0 KS |
572 | if (event->state != EVENT_QUEUED) |
573 | continue; | |
0bc74ea7 | 574 | |
912541b0 | 575 | /* do not start event if parent or child event is still running */ |
baa30fbc | 576 | if (is_devpath_busy(event)) |
912541b0 | 577 | continue; |
fc465079 | 578 | |
912541b0 KS |
579 | event_run(event); |
580 | } | |
1e03b754 KS |
581 | } |
582 | ||
9ec6e95b | 583 | static void event_queue_cleanup(struct udev *udev, enum event_state match_type) { |
912541b0 | 584 | struct udev_list_node *loop, *tmp; |
ff2c503d | 585 | |
912541b0 KS |
586 | udev_list_node_foreach_safe(loop, tmp, &event_list) { |
587 | struct event *event = node_to_event(loop); | |
ff2c503d | 588 | |
912541b0 KS |
589 | if (match_type != EVENT_UNDEF && match_type != event->state) |
590 | continue; | |
ff2c503d | 591 | |
9ea28c55 | 592 | event_queue_delete(event); |
912541b0 | 593 | } |
ff2c503d KS |
594 | } |
595 | ||
9ec6e95b | 596 | static void worker_returned(int fd_worker) { |
912541b0 KS |
597 | for (;;) { |
598 | struct worker_message msg; | |
599 | ssize_t size; | |
600 | struct udev_list_node *loop; | |
601 | ||
602 | size = recv(fd_worker, &msg, sizeof(struct worker_message), MSG_DONTWAIT); | |
603 | if (size != sizeof(struct worker_message)) | |
604 | break; | |
605 | ||
606 | /* lookup worker who sent the signal */ | |
607 | udev_list_node_foreach(loop, &worker_list) { | |
608 | struct worker *worker = node_to_worker(loop); | |
609 | ||
610 | if (worker->pid != msg.pid) | |
611 | continue; | |
612 | ||
613 | /* worker returned */ | |
e64fae55 KS |
614 | if (worker->event) { |
615 | worker->event->exitcode = msg.exitcode; | |
9ea28c55 | 616 | event_queue_delete(worker->event); |
e64fae55 KS |
617 | worker->event = NULL; |
618 | } | |
912541b0 KS |
619 | if (worker->state != WORKER_KILLED) |
620 | worker->state = WORKER_IDLE; | |
621 | worker_unref(worker); | |
622 | break; | |
623 | } | |
624 | } | |
88f4b648 KS |
625 | } |
626 | ||
3b47c739 | 627 | /* receive the udevd message from userspace */ |
9ec6e95b | 628 | static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) { |
912541b0 KS |
629 | struct udev *udev = udev_ctrl_get_udev(uctrl); |
630 | struct udev_ctrl_connection *ctrl_conn; | |
631 | struct udev_ctrl_msg *ctrl_msg = NULL; | |
632 | const char *str; | |
633 | int i; | |
634 | ||
635 | ctrl_conn = udev_ctrl_get_connection(uctrl); | |
636 | if (ctrl_conn == NULL) | |
637 | goto out; | |
638 | ||
639 | ctrl_msg = udev_ctrl_receive_msg(ctrl_conn); | |
640 | if (ctrl_msg == NULL) | |
641 | goto out; | |
642 | ||
643 | i = udev_ctrl_get_set_log_level(ctrl_msg); | |
644 | if (i >= 0) { | |
ed14edc0 | 645 | log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i); |
baa30fbc | 646 | log_set_max_level(i); |
912541b0 | 647 | udev_set_log_priority(udev, i); |
194bbe33 | 648 | worker_kill(udev); |
912541b0 KS |
649 | } |
650 | ||
651 | if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) { | |
9f6445e3 | 652 | log_debug("udevd message (STOP_EXEC_QUEUE) received"); |
912541b0 KS |
653 | stop_exec_queue = true; |
654 | } | |
655 | ||
656 | if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) { | |
9f6445e3 | 657 | log_debug("udevd message (START_EXEC_QUEUE) received"); |
912541b0 KS |
658 | stop_exec_queue = false; |
659 | } | |
660 | ||
661 | if (udev_ctrl_get_reload(ctrl_msg) > 0) { | |
9f6445e3 | 662 | log_debug("udevd message (RELOAD) received"); |
912541b0 KS |
663 | reload = true; |
664 | } | |
665 | ||
666 | str = udev_ctrl_get_set_env(ctrl_msg); | |
667 | if (str != NULL) { | |
668 | char *key; | |
669 | ||
670 | key = strdup(str); | |
671 | if (key != NULL) { | |
672 | char *val; | |
673 | ||
674 | val = strchr(key, '='); | |
675 | if (val != NULL) { | |
676 | val[0] = '\0'; | |
677 | val = &val[1]; | |
678 | if (val[0] == '\0') { | |
9f6445e3 | 679 | log_debug("udevd message (ENV) received, unset '%s'", key); |
912541b0 KS |
680 | udev_add_property(udev, key, NULL); |
681 | } else { | |
9f6445e3 | 682 | log_debug("udevd message (ENV) received, set '%s=%s'", key, val); |
912541b0 KS |
683 | udev_add_property(udev, key, val); |
684 | } | |
685 | } else { | |
9f6445e3 | 686 | log_error("wrong key format '%s'", key); |
912541b0 KS |
687 | } |
688 | free(key); | |
689 | } | |
194bbe33 | 690 | worker_kill(udev); |
912541b0 KS |
691 | } |
692 | ||
693 | i = udev_ctrl_get_set_children_max(ctrl_msg); | |
694 | if (i >= 0) { | |
9f6445e3 | 695 | log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i); |
bba7a484 | 696 | arg_children_max = i; |
912541b0 KS |
697 | } |
698 | ||
699 | if (udev_ctrl_get_ping(ctrl_msg) > 0) | |
9f6445e3 | 700 | log_debug("udevd message (SYNC) received"); |
912541b0 KS |
701 | |
702 | if (udev_ctrl_get_exit(ctrl_msg) > 0) { | |
9f6445e3 | 703 | log_debug("udevd message (EXIT) received"); |
912541b0 KS |
704 | udev_exit = true; |
705 | /* keep reference to block the client until we exit */ | |
706 | udev_ctrl_connection_ref(ctrl_conn); | |
707 | } | |
ff2c503d | 708 | out: |
912541b0 KS |
709 | udev_ctrl_msg_unref(ctrl_msg); |
710 | return udev_ctrl_connection_unref(ctrl_conn); | |
88f4b648 | 711 | } |
4a231017 | 712 | |
f3a740a5 | 713 | static int synthesize_change(struct udev_device *dev) { |
edd32000 | 714 | char filename[UTIL_PATH_SIZE]; |
f3a740a5 | 715 | int r; |
edd32000 | 716 | |
f3a740a5 | 717 | if (streq_ptr("block", udev_device_get_subsystem(dev)) && |
ede34445 | 718 | streq_ptr("disk", udev_device_get_devtype(dev)) && |
638ca89c | 719 | !startswith(udev_device_get_sysname(dev), "dm-")) { |
e9fc29f4 KS |
720 | bool part_table_read = false; |
721 | bool has_partitions = false; | |
ede34445 | 722 | int fd; |
f3a740a5 KS |
723 | struct udev *udev = udev_device_get_udev(dev); |
724 | _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; | |
725 | struct udev_list_entry *item; | |
726 | ||
ede34445 | 727 | /* |
e9fc29f4 KS |
728 | * Try to re-read the partition table. This only succeeds if |
729 | * none of the devices is busy. The kernel returns 0 if no | |
730 | * partition table is found, and we will not get an event for | |
731 | * the disk. | |
ede34445 | 732 | */ |
02ba8fb3 | 733 | fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); |
ede34445 | 734 | if (fd >= 0) { |
02ba8fb3 KS |
735 | r = flock(fd, LOCK_EX|LOCK_NB); |
736 | if (r >= 0) | |
737 | r = ioctl(fd, BLKRRPART, 0); | |
738 | ||
ede34445 KS |
739 | close(fd); |
740 | if (r >= 0) | |
e9fc29f4 | 741 | part_table_read = true; |
ede34445 KS |
742 | } |
743 | ||
e9fc29f4 | 744 | /* search for partitions */ |
f3a740a5 KS |
745 | e = udev_enumerate_new(udev); |
746 | if (!e) | |
747 | return -ENOMEM; | |
748 | ||
749 | r = udev_enumerate_add_match_parent(e, dev); | |
750 | if (r < 0) | |
751 | return r; | |
752 | ||
753 | r = udev_enumerate_add_match_subsystem(e, "block"); | |
754 | if (r < 0) | |
755 | return r; | |
756 | ||
757 | r = udev_enumerate_scan_devices(e); | |
47a3fa0f TA |
758 | if (r < 0) |
759 | return r; | |
e9fc29f4 KS |
760 | |
761 | udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) { | |
762 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; | |
763 | ||
764 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); | |
765 | if (!d) | |
766 | continue; | |
767 | ||
768 | if (!streq_ptr("partition", udev_device_get_devtype(d))) | |
769 | continue; | |
770 | ||
771 | has_partitions = true; | |
772 | break; | |
773 | } | |
774 | ||
775 | /* | |
776 | * We have partitions and re-read the table, the kernel already sent | |
777 | * out a "change" event for the disk, and "remove/add" for all | |
778 | * partitions. | |
779 | */ | |
780 | if (part_table_read && has_partitions) | |
781 | return 0; | |
782 | ||
783 | /* | |
784 | * We have partitions but re-reading the partition table did not | |
785 | * work, synthesize "change" for the disk and all partitions. | |
786 | */ | |
787 | log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev)); | |
788 | strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL); | |
789 | write_string_file(filename, "change"); | |
790 | ||
f3a740a5 KS |
791 | udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) { |
792 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; | |
793 | ||
794 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); | |
795 | if (!d) | |
796 | continue; | |
797 | ||
798 | if (!streq_ptr("partition", udev_device_get_devtype(d))) | |
799 | continue; | |
800 | ||
801 | log_debug("device %s closed, synthesising partition '%s' 'change'", | |
802 | udev_device_get_devnode(dev), udev_device_get_devnode(d)); | |
803 | strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL); | |
804 | write_string_file(filename, "change"); | |
805 | } | |
ede34445 KS |
806 | |
807 | return 0; | |
f3a740a5 KS |
808 | } |
809 | ||
ede34445 KS |
810 | log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev)); |
811 | strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL); | |
812 | write_string_file(filename, "change"); | |
813 | ||
f3a740a5 | 814 | return 0; |
edd32000 KS |
815 | } |
816 | ||
9ec6e95b | 817 | static int handle_inotify(struct udev *udev) { |
912541b0 KS |
818 | int nbytes, pos; |
819 | char *buf; | |
820 | struct inotify_event *ev; | |
edd32000 | 821 | int r; |
912541b0 | 822 | |
edd32000 KS |
823 | r = ioctl(fd_inotify, FIONREAD, &nbytes); |
824 | if (r < 0 || nbytes <= 0) | |
825 | return -errno; | |
912541b0 KS |
826 | |
827 | buf = malloc(nbytes); | |
edd32000 | 828 | if (!buf) { |
9f6445e3 | 829 | log_error("error getting buffer for inotify"); |
edd32000 | 830 | return -ENOMEM; |
912541b0 KS |
831 | } |
832 | ||
833 | nbytes = read(fd_inotify, buf, nbytes); | |
834 | ||
835 | for (pos = 0; pos < nbytes; pos += sizeof(struct inotify_event) + ev->len) { | |
836 | struct udev_device *dev; | |
837 | ||
838 | ev = (struct inotify_event *)(buf + pos); | |
839 | dev = udev_watch_lookup(udev, ev->wd); | |
edd32000 KS |
840 | if (!dev) |
841 | continue; | |
912541b0 | 842 | |
edd32000 KS |
843 | log_debug("inotify event: %x for %s", ev->mask, udev_device_get_devnode(dev)); |
844 | if (ev->mask & IN_CLOSE_WRITE) | |
845 | synthesize_change(dev); | |
846 | else if (ev->mask & IN_IGNORED) | |
847 | udev_watch_end(udev, dev); | |
912541b0 | 848 | |
edd32000 | 849 | udev_device_unref(dev); |
912541b0 KS |
850 | } |
851 | ||
852 | free(buf); | |
853 | return 0; | |
bd284db1 SJR |
854 | } |
855 | ||
9ec6e95b | 856 | static void handle_signal(struct udev *udev, int signo) { |
912541b0 KS |
857 | switch (signo) { |
858 | case SIGINT: | |
859 | case SIGTERM: | |
860 | udev_exit = true; | |
861 | break; | |
862 | case SIGCHLD: | |
863 | for (;;) { | |
864 | pid_t pid; | |
865 | int status; | |
866 | struct udev_list_node *loop, *tmp; | |
867 | ||
868 | pid = waitpid(-1, &status, WNOHANG); | |
869 | if (pid <= 0) | |
870 | break; | |
871 | ||
872 | udev_list_node_foreach_safe(loop, tmp, &worker_list) { | |
873 | struct worker *worker = node_to_worker(loop); | |
874 | ||
875 | if (worker->pid != pid) | |
876 | continue; | |
9f6445e3 | 877 | log_debug("worker [%u] exit", pid); |
912541b0 KS |
878 | |
879 | if (WIFEXITED(status)) { | |
880 | if (WEXITSTATUS(status) != 0) | |
9f6445e3 | 881 | log_error("worker [%u] exit with return code %i", |
97fec53e | 882 | pid, WEXITSTATUS(status)); |
912541b0 | 883 | } else if (WIFSIGNALED(status)) { |
9f6445e3 | 884 | log_error("worker [%u] terminated by signal %i (%s)", |
97fec53e | 885 | pid, WTERMSIG(status), strsignal(WTERMSIG(status))); |
912541b0 | 886 | } else if (WIFSTOPPED(status)) { |
9f6445e3 | 887 | log_error("worker [%u] stopped", pid); |
912541b0 | 888 | } else if (WIFCONTINUED(status)) { |
9f6445e3 | 889 | log_error("worker [%u] continued", pid); |
912541b0 | 890 | } else { |
9f6445e3 | 891 | log_error("worker [%u] exit with status 0x%04x", pid, status); |
912541b0 KS |
892 | } |
893 | ||
894 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { | |
e64fae55 | 895 | if (worker->event) { |
9f6445e3 | 896 | log_error("worker [%u] failed while handling '%s'", |
baa30fbc | 897 | pid, worker->event->devpath); |
912541b0 | 898 | worker->event->exitcode = -32; |
9ea28c55 KS |
899 | event_queue_delete(worker->event); |
900 | ||
912541b0 KS |
901 | /* drop reference taken for state 'running' */ |
902 | worker_unref(worker); | |
903 | } | |
904 | } | |
905 | worker_unref(worker); | |
906 | break; | |
907 | } | |
908 | } | |
909 | break; | |
910 | case SIGHUP: | |
911 | reload = true; | |
912 | break; | |
913 | } | |
f27125f9 | 914 | } |
915 | ||
9ec6e95b | 916 | static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink) { |
912541b0 KS |
917 | int ctrl = -1, netlink = -1; |
918 | int fd, n; | |
919 | ||
920 | n = sd_listen_fds(true); | |
921 | if (n <= 0) | |
922 | return -1; | |
923 | ||
924 | for (fd = SD_LISTEN_FDS_START; fd < n + SD_LISTEN_FDS_START; fd++) { | |
925 | if (sd_is_socket(fd, AF_LOCAL, SOCK_SEQPACKET, -1)) { | |
926 | if (ctrl >= 0) | |
927 | return -1; | |
928 | ctrl = fd; | |
929 | continue; | |
930 | } | |
931 | ||
932 | if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1)) { | |
933 | if (netlink >= 0) | |
934 | return -1; | |
935 | netlink = fd; | |
936 | continue; | |
937 | } | |
938 | ||
939 | return -1; | |
940 | } | |
941 | ||
942 | if (ctrl < 0 || netlink < 0) | |
943 | return -1; | |
944 | ||
9f6445e3 | 945 | log_debug("ctrl=%i netlink=%i", ctrl, netlink); |
912541b0 KS |
946 | *rctrl = ctrl; |
947 | *rnetlink = netlink; | |
948 | return 0; | |
7459bcdc KS |
949 | } |
950 | ||
e6f86cac KS |
951 | /* |
952 | * read the kernel commandline, in case we need to get into debug mode | |
953 | * udev.log-priority=<level> syslog priority | |
954 | * udev.children-max=<number of workers> events are fully serialized if set to 1 | |
955 | * udev.exec-delay=<number of seconds> delay execution of every executed program | |
956 | */ | |
9ec6e95b | 957 | static void kernel_cmdline_options(struct udev *udev) { |
74df0fca | 958 | _cleanup_free_ char *line = NULL; |
a2a5291b | 959 | const char *word, *state; |
e6f86cac | 960 | size_t l; |
74df0fca | 961 | int r; |
e6f86cac | 962 | |
74df0fca LP |
963 | r = proc_cmdline(&line); |
964 | if (r < 0) | |
965 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); | |
966 | if (r <= 0) | |
e6f86cac KS |
967 | return; |
968 | ||
a2a5291b | 969 | FOREACH_WORD_QUOTED(word, l, line, state) { |
e6f86cac KS |
970 | char *s, *opt; |
971 | ||
a2a5291b | 972 | s = strndup(word, l); |
e6f86cac KS |
973 | if (!s) |
974 | break; | |
975 | ||
976 | /* accept the same options for the initrd, prefixed with "rd." */ | |
977 | if (in_initrd() && startswith(s, "rd.")) | |
978 | opt = s + 3; | |
979 | else | |
980 | opt = s; | |
981 | ||
023b9d33 KS |
982 | if (startswith(opt, "udev.log-priority=")) { |
983 | int prio; | |
e6f86cac | 984 | |
023b9d33 KS |
985 | prio = util_log_priority(opt + 18); |
986 | log_set_max_level(prio); | |
987 | udev_set_log_priority(udev, prio); | |
988 | } else if (startswith(opt, "udev.children-max=")) { | |
f1e8664e TG |
989 | r = safe_atoi(opt + 18, &arg_children_max); |
990 | if (r < 0) | |
991 | log_warning("Invalid udev.children-max ignored: %s", opt + 18); | |
023b9d33 | 992 | } else if (startswith(opt, "udev.exec-delay=")) { |
f1e8664e TG |
993 | r = safe_atoi(opt + 16, &arg_exec_delay); |
994 | if (r < 0) | |
995 | log_warning("Invalid udev.exec-delay ignored: %s", opt + 16); | |
9719859c | 996 | } else if (startswith(opt, "udev.event-timeout=")) { |
f1e8664e TG |
997 | r = safe_atou64(opt + 16, &arg_event_timeout_usec); |
998 | if (r < 0) { | |
999 | log_warning("Invalid udev.event-timeout ignored: %s", opt + 16); | |
1000 | break; | |
1001 | } | |
1002 | arg_event_timeout_usec *= USEC_PER_SEC; | |
bba7a484 | 1003 | arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1; |
023b9d33 | 1004 | } |
e6f86cac KS |
1005 | |
1006 | free(s); | |
1007 | } | |
e6f86cac KS |
1008 | } |
1009 | ||
ed216e1f TG |
1010 | static void help(void) { |
1011 | printf("%s [OPTIONS...]\n\n" | |
1012 | "Manages devices.\n\n" | |
1013 | " --daemon\n" | |
1014 | " --debug\n" | |
1015 | " --children-max=<maximum number of workers>\n" | |
1016 | " --exec-delay=<seconds to wait before executing RUN=>\n" | |
1017 | " --event-timeout=<seconds to wait before terminating an event>\n" | |
1018 | " --resolve-names=early|late|never\n" | |
1019 | " --version\n" | |
1020 | " --help\n" | |
1021 | , program_invocation_short_name); | |
1022 | } | |
1023 | ||
bba7a484 | 1024 | static int parse_argv(int argc, char *argv[]) { |
912541b0 | 1025 | static const struct option options[] = { |
bba7a484 TG |
1026 | { "daemon", no_argument, NULL, 'd' }, |
1027 | { "debug", no_argument, NULL, 'D' }, | |
1028 | { "children-max", required_argument, NULL, 'c' }, | |
1029 | { "exec-delay", required_argument, NULL, 'e' }, | |
1030 | { "event-timeout", required_argument, NULL, 't' }, | |
1031 | { "resolve-names", required_argument, NULL, 'N' }, | |
1032 | { "help", no_argument, NULL, 'h' }, | |
1033 | { "version", no_argument, NULL, 'V' }, | |
912541b0 KS |
1034 | {} |
1035 | }; | |
689a97f5 | 1036 | |
bba7a484 | 1037 | int c; |
689a97f5 | 1038 | |
bba7a484 TG |
1039 | assert(argc >= 0); |
1040 | assert(argv); | |
912541b0 | 1041 | |
bba7a484 | 1042 | while ((c = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL)) >= 0) { |
f1e8664e | 1043 | int r; |
912541b0 | 1044 | |
bba7a484 | 1045 | switch (c) { |
912541b0 | 1046 | |
912541b0 | 1047 | case 'd': |
bba7a484 | 1048 | arg_daemonize = true; |
912541b0 KS |
1049 | break; |
1050 | case 'c': | |
6f5cf8a8 TG |
1051 | r = safe_atoi(optarg, &arg_children_max); |
1052 | if (r < 0) | |
1053 | log_warning("Invalid --children-max ignored: %s", optarg); | |
912541b0 KS |
1054 | break; |
1055 | case 'e': | |
6f5cf8a8 TG |
1056 | r = safe_atoi(optarg, &arg_exec_delay); |
1057 | if (r < 0) | |
1058 | log_warning("Invalid --exec-delay ignored: %s", optarg); | |
912541b0 | 1059 | break; |
9719859c | 1060 | case 't': |
f1e8664e TG |
1061 | r = safe_atou64(optarg, &arg_event_timeout_usec); |
1062 | if (r < 0) | |
6f5cf8a8 TG |
1063 | log_warning("Invalig --event-timeout ignored: %s", optarg); |
1064 | else { | |
1065 | arg_event_timeout_usec *= USEC_PER_SEC; | |
1066 | arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1; | |
1067 | } | |
9719859c | 1068 | break; |
912541b0 | 1069 | case 'D': |
bba7a484 | 1070 | arg_debug = true; |
912541b0 KS |
1071 | break; |
1072 | case 'N': | |
090be865 | 1073 | if (streq(optarg, "early")) { |
bba7a484 | 1074 | arg_resolve_names = 1; |
090be865 | 1075 | } else if (streq(optarg, "late")) { |
bba7a484 | 1076 | arg_resolve_names = 0; |
090be865 | 1077 | } else if (streq(optarg, "never")) { |
bba7a484 | 1078 | arg_resolve_names = -1; |
912541b0 | 1079 | } else { |
9f6445e3 | 1080 | log_error("resolve-names must be early, late or never"); |
bba7a484 | 1081 | return 0; |
912541b0 KS |
1082 | } |
1083 | break; | |
1084 | case 'h': | |
ed216e1f | 1085 | help(); |
bba7a484 | 1086 | return 0; |
912541b0 KS |
1087 | case 'V': |
1088 | printf("%s\n", VERSION); | |
bba7a484 TG |
1089 | return 0; |
1090 | case '?': | |
1091 | return -EINVAL; | |
912541b0 | 1092 | default: |
bba7a484 TG |
1093 | assert_not_reached("Unhandled option"); |
1094 | ||
912541b0 KS |
1095 | } |
1096 | } | |
1097 | ||
bba7a484 TG |
1098 | return 1; |
1099 | } | |
1100 | ||
1101 | int main(int argc, char *argv[]) { | |
1102 | struct udev *udev; | |
1103 | sigset_t mask; | |
1104 | int fd_ctrl = -1; | |
1105 | int fd_netlink = -1; | |
1106 | int fd_worker = -1; | |
3f56f784 TG |
1107 | struct epoll_event ep_ctrl = { .events = EPOLLIN }; |
1108 | struct epoll_event ep_inotify = { .events = EPOLLIN }; | |
1109 | struct epoll_event ep_signal = { .events = EPOLLIN }; | |
1110 | struct epoll_event ep_netlink = { .events = EPOLLIN }; | |
1111 | struct epoll_event ep_worker = { .events = EPOLLIN }; | |
bba7a484 TG |
1112 | struct udev_ctrl_connection *ctrl_conn = NULL; |
1113 | int rc = 1, r; | |
1114 | ||
1115 | udev = udev_new(); | |
1116 | if (udev == NULL) | |
1117 | goto exit; | |
1118 | ||
1119 | log_set_target(LOG_TARGET_AUTO); | |
1120 | log_parse_environment(); | |
1121 | log_open(); | |
1122 | ||
1123 | udev_set_log_fn(udev, udev_main_log); | |
1124 | log_set_max_level(udev_get_log_priority(udev)); | |
1125 | ||
bba7a484 TG |
1126 | r = parse_argv(argc, argv); |
1127 | if (r <= 0) | |
1128 | goto exit; | |
1129 | ||
e6f86cac | 1130 | kernel_cmdline_options(udev); |
912541b0 | 1131 | |
bba7a484 TG |
1132 | if (arg_debug) { |
1133 | log_set_max_level(LOG_DEBUG); | |
1134 | udev_set_log_priority(udev, LOG_DEBUG); | |
1135 | } | |
1136 | ||
912541b0 | 1137 | if (getuid() != 0) { |
9f6445e3 | 1138 | log_error("root privileges required"); |
912541b0 KS |
1139 | goto exit; |
1140 | } | |
1141 | ||
ebc164ef TG |
1142 | label_init("/dev"); |
1143 | ||
912541b0 KS |
1144 | /* set umask before creating any file/directory */ |
1145 | chdir("/"); | |
1146 | umask(022); | |
1147 | ||
6ada823a | 1148 | mkdir("/run/udev", 0755); |
912541b0 | 1149 | |
01ed0e23 | 1150 | dev_setup(NULL); |
912541b0 KS |
1151 | |
1152 | /* before opening new files, make sure std{in,out,err} fds are in a sane state */ | |
bba7a484 | 1153 | if (arg_daemonize) { |
912541b0 KS |
1154 | int fd; |
1155 | ||
1156 | fd = open("/dev/null", O_RDWR); | |
1157 | if (fd >= 0) { | |
1158 | if (write(STDOUT_FILENO, 0, 0) < 0) | |
1159 | dup2(fd, STDOUT_FILENO); | |
1160 | if (write(STDERR_FILENO, 0, 0) < 0) | |
1161 | dup2(fd, STDERR_FILENO); | |
1162 | if (fd > STDERR_FILENO) | |
1163 | close(fd); | |
1164 | } else { | |
9f6445e3 | 1165 | log_error("cannot open /dev/null"); |
912541b0 KS |
1166 | } |
1167 | } | |
1168 | ||
1169 | if (systemd_fds(udev, &fd_ctrl, &fd_netlink) >= 0) { | |
c5315881 | 1170 | /* get control and netlink socket from systemd */ |
912541b0 KS |
1171 | udev_ctrl = udev_ctrl_new_from_fd(udev, fd_ctrl); |
1172 | if (udev_ctrl == NULL) { | |
baa30fbc | 1173 | log_error("error taking over udev control socket"); |
912541b0 KS |
1174 | rc = 1; |
1175 | goto exit; | |
1176 | } | |
1177 | ||
1178 | monitor = udev_monitor_new_from_netlink_fd(udev, "kernel", fd_netlink); | |
1179 | if (monitor == NULL) { | |
9f6445e3 | 1180 | log_error("error taking over netlink socket"); |
912541b0 KS |
1181 | rc = 3; |
1182 | goto exit; | |
1183 | } | |
194bbe33 KS |
1184 | |
1185 | /* get our own cgroup, we regularly kill everything udev has left behind */ | |
7027ff61 | 1186 | if (cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0) |
194bbe33 | 1187 | udev_cgroup = NULL; |
912541b0 KS |
1188 | } else { |
1189 | /* open control and netlink socket */ | |
1190 | udev_ctrl = udev_ctrl_new(udev); | |
1191 | if (udev_ctrl == NULL) { | |
baa30fbc | 1192 | log_error("error initializing udev control socket"); |
912541b0 KS |
1193 | rc = 1; |
1194 | goto exit; | |
1195 | } | |
1196 | fd_ctrl = udev_ctrl_get_fd(udev_ctrl); | |
1197 | ||
1198 | monitor = udev_monitor_new_from_netlink(udev, "kernel"); | |
1199 | if (monitor == NULL) { | |
9f6445e3 | 1200 | log_error("error initializing netlink socket"); |
912541b0 KS |
1201 | rc = 3; |
1202 | goto exit; | |
1203 | } | |
1204 | fd_netlink = udev_monitor_get_fd(monitor); | |
1205 | } | |
1206 | ||
1207 | if (udev_monitor_enable_receiving(monitor) < 0) { | |
9f6445e3 | 1208 | log_error("error binding netlink socket"); |
912541b0 KS |
1209 | rc = 3; |
1210 | goto exit; | |
1211 | } | |
1212 | ||
1213 | if (udev_ctrl_enable_receiving(udev_ctrl) < 0) { | |
9f6445e3 | 1214 | log_error("error binding udev control socket"); |
912541b0 KS |
1215 | rc = 1; |
1216 | goto exit; | |
1217 | } | |
1218 | ||
9ea28c55 | 1219 | udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024); |
912541b0 | 1220 | |
4d6dac13 TG |
1221 | log_info("starting version " VERSION "\n"); |
1222 | ||
1223 | udev_builtin_init(udev); | |
1224 | ||
1225 | rules = udev_rules_new(udev, arg_resolve_names); | |
1226 | if (rules == NULL) { | |
1227 | log_error("error reading rules"); | |
1228 | goto exit; | |
1229 | } | |
1230 | ||
1231 | rc = udev_rules_apply_static_dev_perms(rules); | |
1232 | if (rc < 0) | |
1233 | log_error("failed to apply permissions on static device nodes - %s", strerror(-rc)); | |
1234 | ||
bba7a484 | 1235 | if (arg_daemonize) { |
912541b0 | 1236 | pid_t pid; |
912541b0 KS |
1237 | |
1238 | pid = fork(); | |
1239 | switch (pid) { | |
1240 | case 0: | |
1241 | break; | |
1242 | case -1: | |
9f6445e3 | 1243 | log_error("fork of daemon failed: %m"); |
912541b0 KS |
1244 | rc = 4; |
1245 | goto exit; | |
1246 | default: | |
1247 | rc = EXIT_SUCCESS; | |
1248 | goto exit_daemonize; | |
1249 | } | |
1250 | ||
1251 | setsid(); | |
1252 | ||
574d5f2d | 1253 | write_string_file("/proc/self/oom_score_adj", "-1000"); |
912541b0 KS |
1254 | } else { |
1255 | sd_notify(1, "READY=1"); | |
1256 | } | |
1257 | ||
3f56f784 TG |
1258 | if (arg_children_max <= 0) { |
1259 | cpu_set_t cpu_set; | |
1260 | ||
1261 | arg_children_max = 8; | |
1262 | ||
1263 | if (sched_getaffinity(0, sizeof (cpu_set), &cpu_set) == 0) { | |
1264 | arg_children_max += CPU_COUNT(&cpu_set) * 2; | |
1265 | } | |
1266 | } | |
1267 | log_debug("set children_max to %u", arg_children_max); | |
1268 | ||
1269 | udev_list_node_init(&event_list); | |
1270 | udev_list_node_init(&worker_list); | |
1271 | ||
912541b0 KS |
1272 | fd_inotify = udev_watch_init(udev); |
1273 | if (fd_inotify < 0) { | |
9f6445e3 | 1274 | log_error("error initializing inotify"); |
912541b0 KS |
1275 | rc = 4; |
1276 | goto exit; | |
1277 | } | |
1278 | udev_watch_restore(udev); | |
1279 | ||
1280 | /* block and listen to all signals on signalfd */ | |
1281 | sigfillset(&mask); | |
1282 | sigprocmask(SIG_SETMASK, &mask, &sigmask_orig); | |
1283 | fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); | |
1284 | if (fd_signal < 0) { | |
9f6445e3 | 1285 | log_error("error creating signalfd"); |
912541b0 KS |
1286 | rc = 5; |
1287 | goto exit; | |
1288 | } | |
1289 | ||
1290 | /* unnamed socket from workers to the main daemon */ | |
1291 | if (socketpair(AF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0, worker_watch) < 0) { | |
9f6445e3 | 1292 | log_error("error creating socketpair"); |
912541b0 KS |
1293 | rc = 6; |
1294 | goto exit; | |
1295 | } | |
1296 | fd_worker = worker_watch[READ_END]; | |
1297 | ||
912541b0 | 1298 | ep_ctrl.data.fd = fd_ctrl; |
912541b0 | 1299 | ep_inotify.data.fd = fd_inotify; |
912541b0 | 1300 | ep_signal.data.fd = fd_signal; |
912541b0 | 1301 | ep_netlink.data.fd = fd_netlink; |
912541b0 KS |
1302 | ep_worker.data.fd = fd_worker; |
1303 | ||
1304 | fd_ep = epoll_create1(EPOLL_CLOEXEC); | |
1305 | if (fd_ep < 0) { | |
9f6445e3 | 1306 | log_error("error creating epoll fd: %m"); |
912541b0 KS |
1307 | goto exit; |
1308 | } | |
1309 | if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_ctrl, &ep_ctrl) < 0 || | |
1310 | epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_inotify, &ep_inotify) < 0 || | |
1311 | epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 || | |
1312 | epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_netlink, &ep_netlink) < 0 || | |
1313 | epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_worker, &ep_worker) < 0) { | |
9f6445e3 | 1314 | log_error("fail to add fds to epoll: %m"); |
912541b0 KS |
1315 | goto exit; |
1316 | } | |
1317 | ||
912541b0 | 1318 | for (;;) { |
40fe8b11 | 1319 | static usec_t last_usec; |
912541b0 KS |
1320 | struct epoll_event ev[8]; |
1321 | int fdcount; | |
1322 | int timeout; | |
1323 | bool is_worker, is_signal, is_inotify, is_netlink, is_ctrl; | |
1324 | int i; | |
1325 | ||
1326 | if (udev_exit) { | |
1327 | /* close sources of new events and discard buffered events */ | |
1328 | if (fd_ctrl >= 0) { | |
1329 | epoll_ctl(fd_ep, EPOLL_CTL_DEL, fd_ctrl, NULL); | |
1330 | fd_ctrl = -1; | |
1331 | } | |
1332 | if (monitor != NULL) { | |
1333 | epoll_ctl(fd_ep, EPOLL_CTL_DEL, fd_netlink, NULL); | |
1334 | udev_monitor_unref(monitor); | |
1335 | monitor = NULL; | |
1336 | } | |
1337 | if (fd_inotify >= 0) { | |
1338 | epoll_ctl(fd_ep, EPOLL_CTL_DEL, fd_inotify, NULL); | |
1339 | close(fd_inotify); | |
1340 | fd_inotify = -1; | |
1341 | } | |
1342 | ||
1343 | /* discard queued events and kill workers */ | |
1344 | event_queue_cleanup(udev, EVENT_QUEUED); | |
194bbe33 | 1345 | worker_kill(udev); |
912541b0 KS |
1346 | |
1347 | /* exit after all has cleaned up */ | |
9ea28c55 | 1348 | if (udev_list_node_is_empty(&event_list) && children == 0) |
912541b0 KS |
1349 | break; |
1350 | ||
1351 | /* timeout at exit for workers to finish */ | |
9ea28c55 KS |
1352 | timeout = 30 * MSEC_PER_SEC; |
1353 | } else if (udev_list_node_is_empty(&event_list) && children == 0) { | |
e64fae55 | 1354 | /* we are idle */ |
912541b0 | 1355 | timeout = -1; |
194bbe33 KS |
1356 | |
1357 | /* cleanup possible left-over processes in our cgroup */ | |
1358 | if (udev_cgroup) | |
1359 | cg_kill(SYSTEMD_CGROUP_CONTROLLER, udev_cgroup, SIGKILL, false, true, NULL); | |
e64fae55 KS |
1360 | } else { |
1361 | /* kill idle or hanging workers */ | |
9ea28c55 | 1362 | timeout = 3 * MSEC_PER_SEC; |
912541b0 | 1363 | } |
9ea28c55 KS |
1364 | |
1365 | /* tell settle that we are busy or idle */ | |
1366 | if (!udev_list_node_is_empty(&event_list)) { | |
1367 | int fd; | |
1368 | ||
1369 | fd = open("/run/udev/queue", O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444); | |
1370 | if (fd >= 0) | |
1371 | close(fd); | |
1372 | } else { | |
1373 | unlink("/run/udev/queue"); | |
1374 | } | |
1375 | ||
8fef0ff2 | 1376 | fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), timeout); |
912541b0 KS |
1377 | if (fdcount < 0) |
1378 | continue; | |
1379 | ||
1380 | if (fdcount == 0) { | |
e64fae55 KS |
1381 | struct udev_list_node *loop; |
1382 | ||
1383 | /* timeout */ | |
912541b0 | 1384 | if (udev_exit) { |
9f6445e3 | 1385 | log_error("timeout, giving up waiting for workers to finish"); |
912541b0 KS |
1386 | break; |
1387 | } | |
1388 | ||
e64fae55 KS |
1389 | /* kill idle workers */ |
1390 | if (udev_list_node_is_empty(&event_list)) { | |
9f6445e3 | 1391 | log_debug("cleanup idle workers"); |
194bbe33 | 1392 | worker_kill(udev); |
e64fae55 KS |
1393 | } |
1394 | ||
1395 | /* check for hanging events */ | |
1396 | udev_list_node_foreach(loop, &worker_list) { | |
1397 | struct worker *worker = node_to_worker(loop); | |
67117413 | 1398 | usec_t ts; |
e64fae55 KS |
1399 | |
1400 | if (worker->state != WORKER_RUNNING) | |
1401 | continue; | |
1402 | ||
67117413 TG |
1403 | ts = now(CLOCK_MONOTONIC); |
1404 | ||
bba7a484 TG |
1405 | if ((ts - worker->event_start_usec) > arg_event_timeout_warn_usec) { |
1406 | if ((ts - worker->event_start_usec) > arg_event_timeout_usec) { | |
67117413 TG |
1407 | log_error("worker [%u] %s timeout; kill it", worker->pid, worker->event->devpath); |
1408 | kill(worker->pid, SIGKILL); | |
1409 | worker->state = WORKER_KILLED; | |
1410 | ||
1411 | /* drop reference taken for state 'running' */ | |
1412 | worker_unref(worker); | |
1413 | log_error("seq %llu '%s' killed", udev_device_get_seqnum(worker->event->dev), worker->event->devpath); | |
1414 | worker->event->exitcode = -64; | |
1415 | event_queue_delete(worker->event); | |
1416 | worker->event = NULL; | |
1417 | } else if (!worker->event_warned) { | |
1418 | log_warning("worker [%u] %s is taking a long time", worker->pid, worker->event->devpath); | |
1419 | worker->event_warned = true; | |
1420 | } | |
e64fae55 KS |
1421 | } |
1422 | } | |
1423 | ||
912541b0 KS |
1424 | } |
1425 | ||
1426 | is_worker = is_signal = is_inotify = is_netlink = is_ctrl = false; | |
1427 | for (i = 0; i < fdcount; i++) { | |
1428 | if (ev[i].data.fd == fd_worker && ev[i].events & EPOLLIN) | |
1429 | is_worker = true; | |
1430 | else if (ev[i].data.fd == fd_netlink && ev[i].events & EPOLLIN) | |
1431 | is_netlink = true; | |
1432 | else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) | |
1433 | is_signal = true; | |
1434 | else if (ev[i].data.fd == fd_inotify && ev[i].events & EPOLLIN) | |
1435 | is_inotify = true; | |
1436 | else if (ev[i].data.fd == fd_ctrl && ev[i].events & EPOLLIN) | |
1437 | is_ctrl = true; | |
1438 | } | |
1439 | ||
1440 | /* check for changed config, every 3 seconds at most */ | |
9ea28c55 | 1441 | if ((now(CLOCK_MONOTONIC) - last_usec) > 3 * USEC_PER_SEC) { |
6ada823a | 1442 | if (udev_rules_check_timestamp(rules)) |
912541b0 KS |
1443 | reload = true; |
1444 | if (udev_builtin_validate(udev)) | |
1445 | reload = true; | |
1446 | ||
40fe8b11 | 1447 | last_usec = now(CLOCK_MONOTONIC); |
912541b0 KS |
1448 | } |
1449 | ||
1450 | /* reload requested, HUP signal received, rules changed, builtin changed */ | |
1451 | if (reload) { | |
194bbe33 | 1452 | worker_kill(udev); |
912541b0 KS |
1453 | rules = udev_rules_unref(rules); |
1454 | udev_builtin_exit(udev); | |
7781e063 | 1455 | reload = false; |
912541b0 KS |
1456 | } |
1457 | ||
1458 | /* event has finished */ | |
1459 | if (is_worker) | |
1460 | worker_returned(fd_worker); | |
1461 | ||
1462 | if (is_netlink) { | |
1463 | struct udev_device *dev; | |
1464 | ||
1465 | dev = udev_monitor_receive_device(monitor); | |
1466 | if (dev != NULL) { | |
40fe8b11 | 1467 | udev_device_set_usec_initialized(dev, now(CLOCK_MONOTONIC)); |
912541b0 KS |
1468 | if (event_queue_insert(dev) < 0) |
1469 | udev_device_unref(dev); | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | /* start new events */ | |
1474 | if (!udev_list_node_is_empty(&event_list) && !udev_exit && !stop_exec_queue) { | |
7781e063 | 1475 | udev_builtin_init(udev); |
912541b0 | 1476 | if (rules == NULL) |
bba7a484 | 1477 | rules = udev_rules_new(udev, arg_resolve_names); |
912541b0 KS |
1478 | if (rules != NULL) |
1479 | event_queue_start(udev); | |
1480 | } | |
1481 | ||
1482 | if (is_signal) { | |
1483 | struct signalfd_siginfo fdsi; | |
1484 | ssize_t size; | |
1485 | ||
1486 | size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo)); | |
1487 | if (size == sizeof(struct signalfd_siginfo)) | |
1488 | handle_signal(udev, fdsi.ssi_signo); | |
1489 | } | |
1490 | ||
1491 | /* we are shutting down, the events below are not handled anymore */ | |
1492 | if (udev_exit) | |
1493 | continue; | |
1494 | ||
1495 | /* device node watch */ | |
1496 | if (is_inotify) | |
1497 | handle_inotify(udev); | |
1498 | ||
1499 | /* | |
1500 | * This needs to be after the inotify handling, to make sure, | |
1501 | * that the ping is send back after the possibly generated | |
1502 | * "change" events by the inotify device node watch. | |
1503 | * | |
1504 | * A single time we may receive a client connection which we need to | |
1505 | * keep open to block the client. It will be closed right before we | |
1506 | * exit. | |
1507 | */ | |
1508 | if (is_ctrl) | |
1509 | ctrl_conn = handle_ctrl_msg(udev_ctrl); | |
1510 | } | |
1511 | ||
1512 | rc = EXIT_SUCCESS; | |
53921bfa | 1513 | exit: |
912541b0 | 1514 | udev_ctrl_cleanup(udev_ctrl); |
9ea28c55 | 1515 | unlink("/run/udev/queue"); |
1f5a5100 | 1516 | exit_daemonize: |
912541b0 KS |
1517 | if (fd_ep >= 0) |
1518 | close(fd_ep); | |
1519 | worker_list_cleanup(udev); | |
1520 | event_queue_cleanup(udev, EVENT_UNDEF); | |
1521 | udev_rules_unref(rules); | |
1522 | udev_builtin_exit(udev); | |
1523 | if (fd_signal >= 0) | |
1524 | close(fd_signal); | |
1525 | if (worker_watch[READ_END] >= 0) | |
1526 | close(worker_watch[READ_END]); | |
1527 | if (worker_watch[WRITE_END] >= 0) | |
1528 | close(worker_watch[WRITE_END]); | |
1529 | udev_monitor_unref(monitor); | |
912541b0 KS |
1530 | udev_ctrl_connection_unref(ctrl_conn); |
1531 | udev_ctrl_unref(udev_ctrl); | |
e9a5ef7c | 1532 | label_finish(); |
912541b0 | 1533 | udev_unref(udev); |
baa30fbc | 1534 | log_close(); |
912541b0 | 1535 | return rc; |
7fafc032 | 1536 | } |