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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 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 | ||
60918275 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
87d1515d | 24 | #include <string.h> |
9152c765 LP |
25 | #include <sys/epoll.h> |
26 | #include <signal.h> | |
27 | #include <sys/signalfd.h> | |
28 | #include <sys/wait.h> | |
29 | #include <unistd.h> | |
30 | #include <sys/poll.h> | |
e1414003 LP |
31 | #include <sys/reboot.h> |
32 | #include <sys/ioctl.h> | |
33 | #include <linux/kd.h> | |
80876c20 LP |
34 | #include <termios.h> |
35 | #include <fcntl.h> | |
a16e1123 LP |
36 | #include <sys/types.h> |
37 | #include <sys/stat.h> | |
fe51822e | 38 | #include <dirent.h> |
8742514c | 39 | #include <sys/timerfd.h> |
830f6caa LP |
40 | |
41 | #ifdef HAVE_AUDIT | |
4927fcae | 42 | #include <libaudit.h> |
830f6caa | 43 | #endif |
60918275 | 44 | |
877d54e9 LP |
45 | #include "systemd/sd-daemon.h" |
46 | #include "systemd/sd-id128.h" | |
47 | #include "systemd/sd-messages.h" | |
81527be1 | 48 | |
60918275 | 49 | #include "manager.h" |
75778e21 | 50 | #include "transaction.h" |
60918275 LP |
51 | #include "hashmap.h" |
52 | #include "macro.h" | |
53 | #include "strv.h" | |
16354eff | 54 | #include "log.h" |
2a987ee8 | 55 | #include "util.h" |
49e942b2 | 56 | #include "mkdir.h" |
ea430986 | 57 | #include "ratelimit.h" |
8e274523 LP |
58 | #include "cgroup.h" |
59 | #include "mount-setup.h" | |
9e2f7c11 | 60 | #include "unit-name.h" |
4139c1b2 LP |
61 | #include "dbus-unit.h" |
62 | #include "dbus-job.h" | |
1137a57c | 63 | #include "missing.h" |
84e3543e | 64 | #include "path-lookup.h" |
514f4ef5 | 65 | #include "special.h" |
398ef8ba | 66 | #include "bus-errors.h" |
d06dacd0 | 67 | #include "exit-status.h" |
5dc4c17f | 68 | #include "virt.h" |
e96d6be7 | 69 | #include "watchdog.h" |
b59e2465 | 70 | #include "cgroup-util.h" |
9eb977db | 71 | #include "path-util.h" |
c1165f82 | 72 | #include "audit-fd.h" |
60918275 | 73 | |
701cc384 LP |
74 | /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */ |
75 | #define GC_QUEUE_ENTRIES_MAX 16 | |
76 | ||
77 | /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */ | |
94b6dfa2 | 78 | #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC) |
701cc384 | 79 | |
8c47c732 | 80 | /* Where clients shall send notification messages to */ |
29252e9e | 81 | #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify" |
8c47c732 LP |
82 | |
83 | static int manager_setup_notify(Manager *m) { | |
84 | union { | |
85 | struct sockaddr sa; | |
86 | struct sockaddr_un un; | |
87 | } sa; | |
88 | struct epoll_event ev; | |
29252e9e | 89 | int one = 1; |
8c47c732 LP |
90 | |
91 | assert(m); | |
92 | ||
93 | m->notify_watch.type = WATCH_NOTIFY; | |
29252e9e LP |
94 | m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
95 | if (m->notify_watch.fd < 0) { | |
8c47c732 LP |
96 | log_error("Failed to allocate notification socket: %m"); |
97 | return -errno; | |
98 | } | |
99 | ||
100 | zero(sa); | |
101 | sa.sa.sa_family = AF_UNIX; | |
102 | ||
31f92a7d | 103 | if (getpid() != 1 || detect_container(NULL) > 0) |
29252e9e LP |
104 | snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull()); |
105 | else | |
106 | strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path)); | |
8c47c732 | 107 | |
29252e9e | 108 | sa.un.sun_path[0] = 0; |
1d6702e8 | 109 | |
29252e9e | 110 | if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { |
8c47c732 LP |
111 | log_error("bind() failed: %m"); |
112 | return -errno; | |
113 | } | |
114 | ||
115 | if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) { | |
116 | log_error("SO_PASSCRED failed: %m"); | |
117 | return -errno; | |
118 | } | |
119 | ||
120 | zero(ev); | |
121 | ev.events = EPOLLIN; | |
122 | ev.data.ptr = &m->notify_watch; | |
123 | ||
8742514c LP |
124 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) { |
125 | log_error("Failed to add timer change fd to epoll: %m"); | |
8c47c732 | 126 | return -errno; |
8742514c | 127 | } |
8c47c732 | 128 | |
29252e9e LP |
129 | sa.un.sun_path[0] = '@'; |
130 | m->notify_socket = strdup(sa.un.sun_path); | |
131 | if (!m->notify_socket) | |
8742514c | 132 | return log_oom(); |
8c47c732 | 133 | |
b2bb3dbe LP |
134 | log_debug("Using notification socket %s", m->notify_socket); |
135 | ||
8c47c732 LP |
136 | return 0; |
137 | } | |
138 | ||
8742514c LP |
139 | static int manager_setup_time_change(Manager *m) { |
140 | struct epoll_event ev; | |
141 | struct itimerspec its; | |
142 | ||
143 | assert(m); | |
144 | assert(m->time_change_watch.type == WATCH_INVALID); | |
145 | ||
146 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever | |
147 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
148 | ||
149 | m->time_change_watch.type = WATCH_TIME_CHANGE; | |
150 | m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
151 | if (m->time_change_watch.fd < 0) { | |
152 | log_error("Failed to create timerfd: %m"); | |
153 | return -errno; | |
154 | } | |
155 | ||
156 | zero(its); | |
8a3a1704 LP |
157 | |
158 | /* We only care for the cancellation event, hence we set the | |
159 | * timeout to the latest possible value. */ | |
160 | assert_cc(sizeof(time_t) == sizeof(long)); | |
161 | its.it_value.tv_sec = LONG_MAX; | |
162 | ||
8742514c LP |
163 | if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
164 | log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); | |
165 | close_nointr_nofail(m->time_change_watch.fd); | |
166 | watch_init(&m->time_change_watch); | |
167 | return 0; | |
168 | } | |
169 | ||
170 | zero(ev); | |
171 | ev.events = EPOLLIN; | |
172 | ev.data.ptr = &m->time_change_watch; | |
173 | ||
174 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) { | |
175 | log_error("Failed to add timer change fd to epoll: %m"); | |
176 | return -errno; | |
177 | } | |
178 | ||
179 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
80876c20 | 184 | static int enable_special_signals(Manager *m) { |
4466ee6a | 185 | int fd; |
80876c20 LP |
186 | |
187 | assert(m); | |
188 | ||
a41b539e | 189 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
190 | * this will fail with EPERM (older) or EINVAL (newer), so |
191 | * ignore that. */ | |
192 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
80876c20 LP |
193 | log_warning("Failed to enable ctrl-alt-del handling: %m"); |
194 | ||
a41b539e LP |
195 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
196 | if (fd < 0) { | |
197 | /* Support systems without virtual console */ | |
198 | if (fd != -ENOENT) | |
199 | log_warning("Failed to open /dev/tty0: %m"); | |
200 | } else { | |
80876c20 LP |
201 | /* Enable that we get SIGWINCH on kbrequest */ |
202 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
203 | log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); | |
204 | ||
205 | close_nointr_nofail(fd); | |
206 | } | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
ce578209 | 211 | static int manager_setup_signals(Manager *m) { |
9152c765 LP |
212 | sigset_t mask; |
213 | struct epoll_event ev; | |
57c0c30e | 214 | struct sigaction sa; |
60918275 | 215 | |
ce578209 LP |
216 | assert(m); |
217 | ||
57c0c30e LP |
218 | /* We are not interested in SIGSTOP and friends. */ |
219 | zero(sa); | |
220 | sa.sa_handler = SIG_DFL; | |
221 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
222 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
223 | ||
ce578209 | 224 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
225 | |
226 | sigset_add_many(&mask, | |
227 | SIGCHLD, /* Child died */ | |
228 | SIGTERM, /* Reexecute daemon */ | |
229 | SIGHUP, /* Reload configuration */ | |
230 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
231 | SIGUSR2, /* systemd: dump status */ | |
232 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
233 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
234 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
235 | SIGRTMIN+0, /* systemd: start default.target */ | |
0003d1ab | 236 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
237 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
238 | SIGRTMIN+3, /* systemd: start halt.target */ | |
239 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
240 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab LP |
241 | SIGRTMIN+6, /* systemd: start kexec.target */ |
242 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
243 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
244 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
245 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
0658666b LP |
246 | SIGRTMIN+20, /* systemd: enable status messages */ |
247 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
248 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
249 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 250 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4cfa2c99 | 251 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
252 | SIGRTMIN+27, /* systemd: set log target to console */ |
253 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
254 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */ | |
7d793605 | 255 | -1); |
ce578209 LP |
256 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
257 | ||
ef734fd6 | 258 | m->signal_watch.type = WATCH_SIGNAL; |
8742514c LP |
259 | m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
260 | if (m->signal_watch.fd < 0) | |
ce578209 LP |
261 | return -errno; |
262 | ||
263 | zero(ev); | |
264 | ev.events = EPOLLIN; | |
265 | ev.data.ptr = &m->signal_watch; | |
266 | ||
267 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) | |
268 | return -errno; | |
269 | ||
67445f4e | 270 | if (m->running_as == SYSTEMD_SYSTEM) |
80876c20 | 271 | return enable_special_signals(m); |
e1414003 | 272 | |
ce578209 LP |
273 | return 0; |
274 | } | |
275 | ||
71ecc858 LP |
276 | static void manager_strip_environment(Manager *m) { |
277 | assert(m); | |
278 | ||
279 | /* Remove variables from the inherited set that are part of | |
280 | * the container interface: | |
281 | * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */ | |
282 | strv_remove_prefix(m->environment, "container="); | |
283 | strv_remove_prefix(m->environment, "container_"); | |
284 | ||
285 | /* Remove variables from the inherited set that are part of | |
286 | * the initrd interface: | |
287 | * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */ | |
288 | strv_remove_prefix(m->environment, "RD_"); | |
289 | } | |
290 | ||
67445f4e | 291 | int manager_new(SystemdRunningAs running_as, Manager **_m) { |
ce578209 | 292 | Manager *m; |
8e274523 LP |
293 | int r = -ENOMEM; |
294 | ||
295 | assert(_m); | |
a5dab5ce | 296 | assert(running_as >= 0); |
67445f4e | 297 | assert(running_as < _SYSTEMD_RUNNING_AS_MAX); |
ce578209 | 298 | |
915b3753 LP |
299 | m = new0(Manager, 1); |
300 | if (!m) | |
8e274523 | 301 | return -ENOMEM; |
60918275 | 302 | |
915b3753 | 303 | dual_timestamp_get(&m->userspace_timestamp); |
e537352b | 304 | |
a5dab5ce | 305 | m->running_as = running_as; |
cbd37330 | 306 | m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1; |
a16e1123 | 307 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
33be102a | 308 | m->pin_cgroupfs_fd = -1; |
f2b68789 | 309 | m->idle_pipe[0] = m->idle_pipe[1] = -1; |
80876c20 | 310 | |
8742514c LP |
311 | watch_init(&m->signal_watch); |
312 | watch_init(&m->mount_watch); | |
313 | watch_init(&m->swap_watch); | |
314 | watch_init(&m->udev_watch); | |
315 | watch_init(&m->time_change_watch); | |
316 | ||
317 | m->epoll_fd = m->dev_autofs_fd = -1; | |
ea430986 | 318 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 319 | |
71ecc858 LP |
320 | m->environment = strv_copy(environ); |
321 | if (!m->environment) | |
1137a57c LP |
322 | goto fail; |
323 | ||
71ecc858 LP |
324 | manager_strip_environment(m); |
325 | ||
67445f4e | 326 | if (running_as == SYSTEMD_SYSTEM) { |
88f06645 LP |
327 | m->default_controllers = strv_new("cpu", NULL); |
328 | if (!m->default_controllers) | |
329 | goto fail; | |
330 | } | |
06d4c99a | 331 | |
87f0e418 | 332 | if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) |
60918275 LP |
333 | goto fail; |
334 | ||
335 | if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) | |
336 | goto fail; | |
337 | ||
9152c765 LP |
338 | if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) |
339 | goto fail; | |
340 | ||
8e274523 LP |
341 | if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) |
342 | goto fail; | |
343 | ||
05e343b7 LP |
344 | if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) |
345 | goto fail; | |
346 | ||
8742514c LP |
347 | m->epoll_fd = epoll_create1(EPOLL_CLOEXEC); |
348 | if (m->epoll_fd < 0) | |
349 | goto fail; | |
350 | ||
351 | r = manager_setup_signals(m); | |
352 | if (r < 0) | |
9152c765 LP |
353 | goto fail; |
354 | ||
8742514c LP |
355 | r = manager_setup_cgroup(m); |
356 | if (r < 0) | |
8e274523 LP |
357 | goto fail; |
358 | ||
8742514c LP |
359 | r = manager_setup_notify(m); |
360 | if (r < 0) | |
9152c765 LP |
361 | goto fail; |
362 | ||
8742514c LP |
363 | r = manager_setup_time_change(m); |
364 | if (r < 0) | |
8c47c732 LP |
365 | goto fail; |
366 | ||
f278026d | 367 | /* Try to connect to the busses, if possible. */ |
8742514c LP |
368 | r = bus_init(m, running_as != SYSTEMD_SYSTEM); |
369 | if (r < 0) | |
ea430986 LP |
370 | goto fail; |
371 | ||
72bc8d00 LP |
372 | m->taint_usr = dir_is_empty("/usr") > 0; |
373 | ||
8e274523 LP |
374 | *_m = m; |
375 | return 0; | |
60918275 LP |
376 | |
377 | fail: | |
378 | manager_free(m); | |
8e274523 | 379 | return r; |
60918275 LP |
380 | } |
381 | ||
23a177ef | 382 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 383 | Unit *u; |
23a177ef LP |
384 | unsigned n = 0; |
385 | ||
386 | assert(m); | |
387 | ||
595ed347 MS |
388 | while ((u = m->cleanup_queue)) { |
389 | assert(u->in_cleanup_queue); | |
23a177ef | 390 | |
595ed347 | 391 | unit_free(u); |
23a177ef LP |
392 | n++; |
393 | } | |
394 | ||
395 | return n; | |
396 | } | |
397 | ||
eced69b3 | 398 | enum { |
35b8ca3a | 399 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
400 | GC_OFFSET_UNSURE, /* No clue */ |
401 | GC_OFFSET_GOOD, /* We still need this unit */ | |
402 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
403 | _GC_OFFSET_MAX | |
404 | }; | |
405 | ||
406 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
701cc384 LP |
407 | Iterator i; |
408 | Unit *other; | |
eced69b3 | 409 | bool is_bad; |
701cc384 LP |
410 | |
411 | assert(u); | |
412 | ||
ac155bb8 MS |
413 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
414 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
415 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
701cc384 LP |
416 | return; |
417 | ||
ac155bb8 | 418 | if (u->in_cleanup_queue) |
701cc384 LP |
419 | goto bad; |
420 | ||
421 | if (unit_check_gc(u)) | |
422 | goto good; | |
423 | ||
ac155bb8 | 424 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
425 | |
426 | is_bad = true; | |
427 | ||
ac155bb8 | 428 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
429 | unit_gc_sweep(other, gc_marker); |
430 | ||
ac155bb8 | 431 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 432 | goto good; |
eced69b3 | 433 | |
ac155bb8 | 434 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 435 | is_bad = false; |
701cc384 LP |
436 | } |
437 | ||
eced69b3 LP |
438 | if (is_bad) |
439 | goto bad; | |
440 | ||
441 | /* We were unable to find anything out about this entry, so | |
442 | * let's investigate it later */ | |
ac155bb8 | 443 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
444 | unit_add_to_gc_queue(u); |
445 | return; | |
446 | ||
701cc384 | 447 | bad: |
eced69b3 LP |
448 | /* We definitely know that this one is not useful anymore, so |
449 | * let's mark it for deletion */ | |
ac155bb8 | 450 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 451 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
452 | return; |
453 | ||
454 | good: | |
ac155bb8 | 455 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; |
701cc384 LP |
456 | } |
457 | ||
458 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
595ed347 | 459 | Unit *u; |
701cc384 | 460 | unsigned n = 0; |
eced69b3 | 461 | unsigned gc_marker; |
701cc384 LP |
462 | |
463 | assert(m); | |
464 | ||
465 | if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) && | |
466 | (m->gc_queue_timestamp <= 0 || | |
467 | (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC))) | |
468 | return 0; | |
469 | ||
470 | log_debug("Running GC..."); | |
471 | ||
eced69b3 LP |
472 | m->gc_marker += _GC_OFFSET_MAX; |
473 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 474 | m->gc_marker = 1; |
701cc384 | 475 | |
eced69b3 LP |
476 | gc_marker = m->gc_marker; |
477 | ||
595ed347 MS |
478 | while ((u = m->gc_queue)) { |
479 | assert(u->in_gc_queue); | |
701cc384 | 480 | |
595ed347 | 481 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 482 | |
595ed347 MS |
483 | LIST_REMOVE(Unit, gc_queue, m->gc_queue, u); |
484 | u->in_gc_queue = false; | |
701cc384 LP |
485 | |
486 | n++; | |
487 | ||
595ed347 MS |
488 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
489 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
490 | log_debug("Collecting %s", u->id); | |
491 | u->gc_marker = gc_marker + GC_OFFSET_BAD; | |
492 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
493 | } |
494 | } | |
495 | ||
496 | m->n_in_gc_queue = 0; | |
497 | m->gc_queue_timestamp = 0; | |
498 | ||
499 | return n; | |
500 | } | |
501 | ||
a16e1123 | 502 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 503 | Unit *u; |
60918275 LP |
504 | |
505 | assert(m); | |
506 | ||
87f0e418 LP |
507 | while ((u = hashmap_first(m->units))) |
508 | unit_free(u); | |
964e0949 LP |
509 | |
510 | manager_dispatch_cleanup_queue(m); | |
511 | ||
512 | assert(!m->load_queue); | |
513 | assert(!m->run_queue); | |
514 | assert(!m->dbus_unit_queue); | |
515 | assert(!m->dbus_job_queue); | |
516 | assert(!m->cleanup_queue); | |
517 | assert(!m->gc_queue); | |
518 | ||
964e0949 LP |
519 | assert(hashmap_isempty(m->jobs)); |
520 | assert(hashmap_isempty(m->units)); | |
a16e1123 LP |
521 | } |
522 | ||
523 | void manager_free(Manager *m) { | |
524 | UnitType c; | |
c93ff2e9 | 525 | int i; |
87f0e418 | 526 | |
a16e1123 LP |
527 | assert(m); |
528 | ||
529 | manager_clear_jobs_and_units(m); | |
23a177ef | 530 | |
7824bbeb LP |
531 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
532 | if (unit_vtable[c]->shutdown) | |
533 | unit_vtable[c]->shutdown(m); | |
534 | ||
a16e1123 LP |
535 | /* If we reexecute ourselves, we keep the root cgroup |
536 | * around */ | |
c6c18be3 | 537 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 538 | |
5a1e9937 LP |
539 | manager_undo_generators(m); |
540 | ||
5e8d1c9a | 541 | bus_done(m); |
ea430986 | 542 | |
87f0e418 | 543 | hashmap_free(m->units); |
60918275 | 544 | hashmap_free(m->jobs); |
9152c765 | 545 | hashmap_free(m->watch_pids); |
05e343b7 | 546 | hashmap_free(m->watch_bus); |
9152c765 LP |
547 | |
548 | if (m->epoll_fd >= 0) | |
a16e1123 | 549 | close_nointr_nofail(m->epoll_fd); |
acbb0225 | 550 | if (m->signal_watch.fd >= 0) |
a16e1123 | 551 | close_nointr_nofail(m->signal_watch.fd); |
8c47c732 LP |
552 | if (m->notify_watch.fd >= 0) |
553 | close_nointr_nofail(m->notify_watch.fd); | |
8742514c LP |
554 | if (m->time_change_watch.fd >= 0) |
555 | close_nointr_nofail(m->time_change_watch.fd); | |
60918275 | 556 | |
c952c6ec LP |
557 | free(m->notify_socket); |
558 | ||
84e3543e | 559 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 560 | strv_free(m->environment); |
036643a2 | 561 | |
06d4c99a LP |
562 | strv_free(m->default_controllers); |
563 | ||
8e274523 | 564 | hashmap_free(m->cgroup_bondings); |
c6c18be3 | 565 | set_free_free(m->unit_path_cache); |
33be102a | 566 | |
f2b68789 LP |
567 | close_pipe(m->idle_pipe); |
568 | ||
664f88a7 LP |
569 | free(m->switch_root); |
570 | free(m->switch_root_init); | |
571 | ||
c93ff2e9 FC |
572 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
573 | free(m->rlimit[i]); | |
574 | ||
60918275 LP |
575 | free(m); |
576 | } | |
577 | ||
a16e1123 LP |
578 | int manager_enumerate(Manager *m) { |
579 | int r = 0, q; | |
f50e0a01 | 580 | UnitType c; |
f50e0a01 LP |
581 | |
582 | assert(m); | |
583 | ||
a16e1123 LP |
584 | /* Let's ask every type to load all units from disk/kernel |
585 | * that it might know */ | |
f50e0a01 LP |
586 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
587 | if (unit_vtable[c]->enumerate) | |
a16e1123 LP |
588 | if ((q = unit_vtable[c]->enumerate(m)) < 0) |
589 | r = q; | |
f50e0a01 LP |
590 | |
591 | manager_dispatch_load_queue(m); | |
a16e1123 LP |
592 | return r; |
593 | } | |
594 | ||
595 | int manager_coldplug(Manager *m) { | |
596 | int r = 0, q; | |
597 | Iterator i; | |
598 | Unit *u; | |
599 | char *k; | |
600 | ||
601 | assert(m); | |
f50e0a01 LP |
602 | |
603 | /* Then, let's set up their initial state. */ | |
604 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
605 | ||
606 | /* ignore aliases */ | |
ac155bb8 | 607 | if (u->id != k) |
f50e0a01 LP |
608 | continue; |
609 | ||
cca098b0 LP |
610 | if ((q = unit_coldplug(u)) < 0) |
611 | r = q; | |
f50e0a01 LP |
612 | } |
613 | ||
a16e1123 LP |
614 | return r; |
615 | } | |
616 | ||
fe51822e LP |
617 | static void manager_build_unit_path_cache(Manager *m) { |
618 | char **i; | |
619 | DIR *d = NULL; | |
620 | int r; | |
621 | ||
622 | assert(m); | |
623 | ||
624 | set_free_free(m->unit_path_cache); | |
625 | ||
626 | if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) { | |
627 | log_error("Failed to allocate unit path cache."); | |
628 | return; | |
629 | } | |
630 | ||
631 | /* This simply builds a list of files we know exist, so that | |
632 | * we don't always have to go to disk */ | |
633 | ||
634 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
635 | struct dirent *de; | |
636 | ||
637 | if (!(d = opendir(*i))) { | |
638 | log_error("Failed to open directory: %m"); | |
639 | continue; | |
640 | } | |
641 | ||
642 | while ((de = readdir(d))) { | |
643 | char *p; | |
644 | ||
645 | if (ignore_file(de->d_name)) | |
646 | continue; | |
647 | ||
b7def684 | 648 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
44d91056 | 649 | if (!p) { |
fe51822e LP |
650 | r = -ENOMEM; |
651 | goto fail; | |
652 | } | |
653 | ||
654 | if ((r = set_put(m->unit_path_cache, p)) < 0) { | |
655 | free(p); | |
656 | goto fail; | |
657 | } | |
658 | } | |
659 | ||
660 | closedir(d); | |
661 | d = NULL; | |
662 | } | |
663 | ||
664 | return; | |
665 | ||
666 | fail: | |
667 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
668 | ||
669 | set_free_free(m->unit_path_cache); | |
670 | m->unit_path_cache = NULL; | |
671 | ||
672 | if (d) | |
673 | closedir(d); | |
674 | } | |
675 | ||
a16e1123 LP |
676 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
677 | int r, q; | |
678 | ||
679 | assert(m); | |
680 | ||
5a1e9937 LP |
681 | manager_run_generators(m); |
682 | ||
07719a21 LP |
683 | r = lookup_paths_init( |
684 | &m->lookup_paths, m->running_as, true, | |
685 | m->generator_unit_path, | |
686 | m->generator_unit_path_early, | |
687 | m->generator_unit_path_late); | |
688 | if (r < 0) | |
689 | return r; | |
690 | ||
fe51822e LP |
691 | manager_build_unit_path_cache(m); |
692 | ||
9f611ad8 LP |
693 | /* If we will deserialize make sure that during enumeration |
694 | * this is already known, so we increase the counter here | |
695 | * already */ | |
696 | if (serialization) | |
a7556052 | 697 | m->n_reloading ++; |
9f611ad8 | 698 | |
a16e1123 LP |
699 | /* First, enumerate what we can from all config files */ |
700 | r = manager_enumerate(m); | |
701 | ||
702 | /* Second, deserialize if there is something to deserialize */ | |
07719a21 LP |
703 | if (serialization) { |
704 | q = manager_deserialize(m, serialization, fds); | |
705 | if (q < 0) | |
a16e1123 | 706 | r = q; |
07719a21 | 707 | } |
a16e1123 LP |
708 | |
709 | /* Third, fire things up! */ | |
07719a21 LP |
710 | q = manager_coldplug(m); |
711 | if (q < 0) | |
a16e1123 LP |
712 | r = q; |
713 | ||
9f611ad8 | 714 | if (serialization) { |
a7556052 LP |
715 | assert(m->n_reloading > 0); |
716 | m->n_reloading --; | |
9f611ad8 LP |
717 | } |
718 | ||
a16e1123 | 719 | return r; |
f50e0a01 LP |
720 | } |
721 | ||
398ef8ba | 722 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 | 723 | int r; |
7527cb52 | 724 | Transaction *tr; |
e5b5ae50 LP |
725 | |
726 | assert(m); | |
727 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 728 | assert(unit); |
e5b5ae50 | 729 | assert(mode < _JOB_MODE_MAX); |
60918275 | 730 | |
398ef8ba LP |
731 | if (mode == JOB_ISOLATE && type != JOB_START) { |
732 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 733 | return -EINVAL; |
398ef8ba | 734 | } |
c497c7a9 | 735 | |
ac155bb8 | 736 | if (mode == JOB_ISOLATE && !unit->allow_isolate) { |
2528a7a6 LP |
737 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
738 | return -EPERM; | |
739 | } | |
740 | ||
ac155bb8 | 741 | log_debug("Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 742 | |
e0209d83 MS |
743 | job_type_collapse(&type, unit); |
744 | ||
7527cb52 MS |
745 | tr = transaction_new(); |
746 | if (!tr) | |
747 | return -ENOMEM; | |
11dd41ce | 748 | |
7527cb52 MS |
749 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false, |
750 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
b94fbd30 | 751 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
752 | if (r < 0) |
753 | goto tr_abort; | |
c497c7a9 | 754 | |
7527cb52 MS |
755 | if (mode == JOB_ISOLATE) { |
756 | r = transaction_add_isolate_jobs(tr, m); | |
757 | if (r < 0) | |
758 | goto tr_abort; | |
759 | } | |
760 | ||
761 | r = transaction_activate(tr, m, mode, e); | |
762 | if (r < 0) | |
763 | goto tr_abort; | |
e5b5ae50 | 764 | |
b94fbd30 | 765 | log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) tr->anchor_job->id); |
f50e0a01 | 766 | |
e5b5ae50 | 767 | if (_ret) |
b94fbd30 | 768 | *_ret = tr->anchor_job; |
60918275 | 769 | |
7527cb52 | 770 | transaction_free(tr); |
e5b5ae50 | 771 | return 0; |
7527cb52 MS |
772 | |
773 | tr_abort: | |
774 | transaction_abort(tr); | |
775 | transaction_free(tr); | |
776 | return r; | |
e5b5ae50 | 777 | } |
60918275 | 778 | |
398ef8ba | 779 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
780 | Unit *unit; |
781 | int r; | |
782 | ||
783 | assert(m); | |
784 | assert(type < _JOB_TYPE_MAX); | |
785 | assert(name); | |
786 | assert(mode < _JOB_MODE_MAX); | |
787 | ||
c3090674 LP |
788 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
789 | if (r < 0) | |
28247076 LP |
790 | return r; |
791 | ||
398ef8ba | 792 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
793 | } |
794 | ||
60918275 LP |
795 | Job *manager_get_job(Manager *m, uint32_t id) { |
796 | assert(m); | |
797 | ||
798 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
799 | } | |
800 | ||
87f0e418 | 801 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
802 | assert(m); |
803 | assert(name); | |
804 | ||
87f0e418 | 805 | return hashmap_get(m->units, name); |
60918275 LP |
806 | } |
807 | ||
c1e1601e | 808 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 809 | Unit *u; |
c1e1601e | 810 | unsigned n = 0; |
60918275 LP |
811 | |
812 | assert(m); | |
813 | ||
223dabab LP |
814 | /* Make sure we are not run recursively */ |
815 | if (m->dispatching_load_queue) | |
c1e1601e | 816 | return 0; |
223dabab LP |
817 | |
818 | m->dispatching_load_queue = true; | |
819 | ||
87f0e418 | 820 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
821 | * tries to load its data until the queue is empty */ |
822 | ||
595ed347 MS |
823 | while ((u = m->load_queue)) { |
824 | assert(u->in_load_queue); | |
034c6ed7 | 825 | |
595ed347 | 826 | unit_load(u); |
c1e1601e | 827 | n++; |
60918275 LP |
828 | } |
829 | ||
223dabab | 830 | m->dispatching_load_queue = false; |
c1e1601e | 831 | return n; |
60918275 LP |
832 | } |
833 | ||
398ef8ba | 834 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 835 | Unit *ret; |
7d17cfbc | 836 | UnitType t; |
60918275 LP |
837 | int r; |
838 | ||
839 | assert(m); | |
9e2f7c11 | 840 | assert(name || path); |
60918275 | 841 | |
db06e3b6 LP |
842 | /* This will prepare the unit for loading, but not actually |
843 | * load anything from disk. */ | |
0301abf4 | 844 | |
398ef8ba LP |
845 | if (path && !is_path(path)) { |
846 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 847 | return -EINVAL; |
398ef8ba | 848 | } |
9e2f7c11 LP |
849 | |
850 | if (!name) | |
9eb977db | 851 | name = path_get_file_name(path); |
9e2f7c11 | 852 | |
7d17cfbc MS |
853 | t = unit_name_to_type(name); |
854 | ||
5f739699 | 855 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) { |
398ef8ba | 856 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 857 | return -EINVAL; |
398ef8ba | 858 | } |
60918275 | 859 | |
7d17cfbc MS |
860 | ret = manager_get_unit(m, name); |
861 | if (ret) { | |
034c6ed7 | 862 | *_ret = ret; |
413d6313 | 863 | return 1; |
034c6ed7 | 864 | } |
60918275 | 865 | |
7d17cfbc MS |
866 | ret = unit_new(m, unit_vtable[t]->object_size); |
867 | if (!ret) | |
60918275 LP |
868 | return -ENOMEM; |
869 | ||
7d17cfbc | 870 | if (path) { |
ac155bb8 MS |
871 | ret->fragment_path = strdup(path); |
872 | if (!ret->fragment_path) { | |
0301abf4 LP |
873 | unit_free(ret); |
874 | return -ENOMEM; | |
875 | } | |
7d17cfbc | 876 | } |
0301abf4 | 877 | |
87f0e418 LP |
878 | if ((r = unit_add_name(ret, name)) < 0) { |
879 | unit_free(ret); | |
1ffba6fe | 880 | return r; |
60918275 LP |
881 | } |
882 | ||
87f0e418 | 883 | unit_add_to_load_queue(ret); |
c1e1601e | 884 | unit_add_to_dbus_queue(ret); |
949061f0 | 885 | unit_add_to_gc_queue(ret); |
c1e1601e | 886 | |
db06e3b6 LP |
887 | if (_ret) |
888 | *_ret = ret; | |
889 | ||
890 | return 0; | |
891 | } | |
892 | ||
398ef8ba | 893 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
894 | int r; |
895 | ||
896 | assert(m); | |
897 | ||
898 | /* This will load the service information files, but not actually | |
899 | * start any services or anything. */ | |
900 | ||
c3090674 LP |
901 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
902 | if (r != 0) | |
db06e3b6 LP |
903 | return r; |
904 | ||
f50e0a01 | 905 | manager_dispatch_load_queue(m); |
60918275 | 906 | |
9e2f7c11 | 907 | if (_ret) |
413d6313 | 908 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 909 | |
60918275 LP |
910 | return 0; |
911 | } | |
a66d02c3 | 912 | |
cea8e32e | 913 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 914 | Iterator i; |
a66d02c3 LP |
915 | Job *j; |
916 | ||
917 | assert(s); | |
918 | assert(f); | |
919 | ||
034c6ed7 | 920 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 921 | job_dump(j, f, prefix); |
a66d02c3 LP |
922 | } |
923 | ||
87f0e418 | 924 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 925 | Iterator i; |
87f0e418 | 926 | Unit *u; |
11dd41ce | 927 | const char *t; |
a66d02c3 LP |
928 | |
929 | assert(s); | |
930 | assert(f); | |
931 | ||
87f0e418 | 932 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 933 | if (u->id == t) |
87f0e418 | 934 | unit_dump(u, f, prefix); |
a66d02c3 | 935 | } |
7fad411c LP |
936 | |
937 | void manager_clear_jobs(Manager *m) { | |
938 | Job *j; | |
939 | ||
940 | assert(m); | |
941 | ||
7fad411c | 942 | while ((j = hashmap_first(m->jobs))) |
5273510e MS |
943 | /* No need to recurse. We're cancelling all jobs. */ |
944 | job_finish_and_invalidate(j, JOB_CANCELED, false); | |
7fad411c | 945 | } |
83c60c9f | 946 | |
c1e1601e | 947 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 948 | Job *j; |
c1e1601e | 949 | unsigned n = 0; |
83c60c9f | 950 | |
034c6ed7 | 951 | if (m->dispatching_run_queue) |
c1e1601e | 952 | return 0; |
034c6ed7 LP |
953 | |
954 | m->dispatching_run_queue = true; | |
9152c765 | 955 | |
034c6ed7 | 956 | while ((j = m->run_queue)) { |
ac1135be | 957 | assert(j->installed); |
034c6ed7 LP |
958 | assert(j->in_run_queue); |
959 | ||
960 | job_run_and_invalidate(j); | |
c1e1601e | 961 | n++; |
9152c765 | 962 | } |
034c6ed7 LP |
963 | |
964 | m->dispatching_run_queue = false; | |
c1e1601e LP |
965 | return n; |
966 | } | |
967 | ||
968 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
969 | Job *j; | |
595ed347 | 970 | Unit *u; |
c1e1601e LP |
971 | unsigned n = 0; |
972 | ||
973 | assert(m); | |
974 | ||
975 | if (m->dispatching_dbus_queue) | |
976 | return 0; | |
977 | ||
978 | m->dispatching_dbus_queue = true; | |
979 | ||
595ed347 MS |
980 | while ((u = m->dbus_unit_queue)) { |
981 | assert(u->in_dbus_queue); | |
c1e1601e | 982 | |
595ed347 | 983 | bus_unit_send_change_signal(u); |
c1e1601e LP |
984 | n++; |
985 | } | |
986 | ||
987 | while ((j = m->dbus_job_queue)) { | |
988 | assert(j->in_dbus_queue); | |
989 | ||
990 | bus_job_send_change_signal(j); | |
991 | n++; | |
992 | } | |
993 | ||
994 | m->dispatching_dbus_queue = false; | |
995 | return n; | |
9152c765 LP |
996 | } |
997 | ||
8c47c732 LP |
998 | static int manager_process_notify_fd(Manager *m) { |
999 | ssize_t n; | |
1000 | ||
1001 | assert(m); | |
1002 | ||
1003 | for (;;) { | |
1004 | char buf[4096]; | |
1005 | struct msghdr msghdr; | |
1006 | struct iovec iovec; | |
1007 | struct ucred *ucred; | |
1008 | union { | |
1009 | struct cmsghdr cmsghdr; | |
1010 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
1011 | } control; | |
1012 | Unit *u; | |
1013 | char **tags; | |
1014 | ||
1015 | zero(iovec); | |
1016 | iovec.iov_base = buf; | |
1017 | iovec.iov_len = sizeof(buf)-1; | |
1018 | ||
1019 | zero(control); | |
1020 | zero(msghdr); | |
1021 | msghdr.msg_iov = &iovec; | |
1022 | msghdr.msg_iovlen = 1; | |
1023 | msghdr.msg_control = &control; | |
1024 | msghdr.msg_controllen = sizeof(control); | |
1025 | ||
1026 | if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) { | |
1027 | if (n >= 0) | |
1028 | return -EIO; | |
1029 | ||
f6144808 | 1030 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
1031 | break; |
1032 | ||
1033 | return -errno; | |
1034 | } | |
1035 | ||
1036 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
1037 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
1038 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
1039 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
1040 | log_warning("Received notify message without credentials. Ignoring."); | |
1041 | continue; | |
1042 | } | |
1043 | ||
1044 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
1045 | ||
c6c18be3 | 1046 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)))) |
8c47c732 LP |
1047 | if (!(u = cgroup_unit_by_pid(m, ucred->pid))) { |
1048 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); | |
1049 | continue; | |
1050 | } | |
1051 | ||
8c40acf7 LP |
1052 | assert((size_t) n < sizeof(buf)); |
1053 | buf[n] = 0; | |
8c47c732 LP |
1054 | if (!(tags = strv_split(buf, "\n\r"))) |
1055 | return -ENOMEM; | |
1056 | ||
ac155bb8 | 1057 | log_debug("Got notification message for unit %s", u->id); |
8c47c732 LP |
1058 | |
1059 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1060 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1061 | |
1062 | strv_free(tags); | |
1063 | } | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
034c6ed7 | 1068 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1069 | assert(m); |
1070 | ||
1071 | for (;;) { | |
1072 | siginfo_t si; | |
87f0e418 | 1073 | Unit *u; |
8c47c732 | 1074 | int r; |
9152c765 LP |
1075 | |
1076 | zero(si); | |
4112df16 LP |
1077 | |
1078 | /* First we call waitd() for a PID and do not reap the | |
1079 | * zombie. That way we can still access /proc/$PID for | |
1080 | * it while it is a zombie. */ | |
1081 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1082 | |
1083 | if (errno == ECHILD) | |
1084 | break; | |
1085 | ||
4112df16 LP |
1086 | if (errno == EINTR) |
1087 | continue; | |
1088 | ||
9152c765 | 1089 | return -errno; |
acbb0225 | 1090 | } |
9152c765 | 1091 | |
4112df16 | 1092 | if (si.si_pid <= 0) |
9152c765 LP |
1093 | break; |
1094 | ||
15d5d9d9 | 1095 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
4112df16 LP |
1096 | char *name = NULL; |
1097 | ||
87d2c1ff | 1098 | get_process_comm(si.si_pid, &name); |
bb00e604 | 1099 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
1100 | free(name); |
1101 | } | |
1102 | ||
8c47c732 LP |
1103 | /* Let's flush any message the dying child might still |
1104 | * have queued for us. This ensures that the process | |
1105 | * still exists in /proc so that we can figure out | |
1106 | * which cgroup and hence unit it belongs to. */ | |
1107 | if ((r = manager_process_notify_fd(m)) < 0) | |
1108 | return r; | |
1109 | ||
1110 | /* And now figure out the unit this belongs to */ | |
c6c18be3 | 1111 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)))) |
8c47c732 LP |
1112 | u = cgroup_unit_by_pid(m, si.si_pid); |
1113 | ||
4112df16 LP |
1114 | /* And now, we actually reap the zombie. */ |
1115 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1116 | if (errno == EINTR) | |
1117 | continue; | |
1118 | ||
1119 | return -errno; | |
1120 | } | |
1121 | ||
034c6ed7 LP |
1122 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
1123 | continue; | |
1124 | ||
bb00e604 LP |
1125 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
1126 | (long unsigned) si.si_pid, | |
4112df16 LP |
1127 | sigchld_code_to_string(si.si_code), |
1128 | si.si_status, | |
d06dacd0 LP |
1129 | strna(si.si_code == CLD_EXITED |
1130 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1131 | : signal_to_string(si.si_status))); | |
acbb0225 | 1132 | |
8c47c732 | 1133 | if (!u) |
9152c765 LP |
1134 | continue; |
1135 | ||
ac155bb8 | 1136 | log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->id); |
6c1a0478 | 1137 | |
c6c18be3 | 1138 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 1139 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
1140 | } |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
7d793605 | 1145 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 1146 | int r; |
398ef8ba LP |
1147 | DBusError error; |
1148 | ||
1149 | dbus_error_init(&error); | |
1150 | ||
af2d49f7 | 1151 | log_debug("Activating special unit %s", name); |
1e001f52 | 1152 | |
398ef8ba LP |
1153 | if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0) |
1154 | log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 1155 | |
398ef8ba | 1156 | dbus_error_free(&error); |
a1b256b0 LP |
1157 | |
1158 | return r; | |
28247076 LP |
1159 | } |
1160 | ||
a16e1123 | 1161 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
1162 | ssize_t n; |
1163 | struct signalfd_siginfo sfsi; | |
1164 | bool sigchld = false; | |
1165 | ||
1166 | assert(m); | |
1167 | ||
1168 | for (;;) { | |
acbb0225 | 1169 | if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) { |
9152c765 LP |
1170 | |
1171 | if (n >= 0) | |
1172 | return -EIO; | |
1173 | ||
63090775 | 1174 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 1175 | break; |
9152c765 LP |
1176 | |
1177 | return -errno; | |
1178 | } | |
1179 | ||
67370238 LP |
1180 | if (sfsi.ssi_pid > 0) { |
1181 | char *p = NULL; | |
1182 | ||
87d2c1ff | 1183 | get_process_comm(sfsi.ssi_pid, &p); |
dfa7f7e1 | 1184 | |
67370238 | 1185 | log_debug("Received SIG%s from PID %lu (%s).", |
4e240ab0 | 1186 | signal_to_string(sfsi.ssi_signo), |
67370238 LP |
1187 | (unsigned long) sfsi.ssi_pid, strna(p)); |
1188 | free(p); | |
1189 | } else | |
4e240ab0 | 1190 | log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo)); |
1e001f52 | 1191 | |
b9cd2ec1 LP |
1192 | switch (sfsi.ssi_signo) { |
1193 | ||
4112df16 | 1194 | case SIGCHLD: |
9152c765 | 1195 | sigchld = true; |
b9cd2ec1 LP |
1196 | break; |
1197 | ||
6632c602 | 1198 | case SIGTERM: |
67445f4e | 1199 | if (m->running_as == SYSTEMD_SYSTEM) { |
db06e3b6 LP |
1200 | /* This is for compatibility with the |
1201 | * original sysvinit */ | |
e11dc4a2 | 1202 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1203 | break; |
1204 | } | |
84e9af1e | 1205 | |
a1b256b0 | 1206 | /* Fall through */ |
e11dc4a2 LP |
1207 | |
1208 | case SIGINT: | |
67445f4e | 1209 | if (m->running_as == SYSTEMD_SYSTEM) { |
7d793605 | 1210 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
1211 | break; |
1212 | } | |
1213 | ||
a1b256b0 | 1214 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1215 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1216 | m->exit_code = MANAGER_EXIT; |
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | break; | |
84e9af1e | 1221 | |
28247076 | 1222 | case SIGWINCH: |
67445f4e | 1223 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1224 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1225 | |
28247076 LP |
1226 | /* This is a nop on non-init */ |
1227 | break; | |
84e9af1e | 1228 | |
28247076 | 1229 | case SIGPWR: |
67445f4e | 1230 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1231 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1232 | |
28247076 | 1233 | /* This is a nop on non-init */ |
84e9af1e | 1234 | break; |
6632c602 | 1235 | |
1005d14f | 1236 | case SIGUSR1: { |
57ee42ce LP |
1237 | Unit *u; |
1238 | ||
1239 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1240 | ||
1241 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
1242 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 1243 | bus_init(m, true); |
57ee42ce LP |
1244 | } |
1245 | ||
1246 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
1247 | log_info("Loading D-Bus service..."); | |
7d793605 | 1248 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
1249 | } |
1250 | ||
1251 | break; | |
1252 | } | |
1253 | ||
2149e37c LP |
1254 | case SIGUSR2: { |
1255 | FILE *f; | |
1256 | char *dump = NULL; | |
1257 | size_t size; | |
1258 | ||
1259 | if (!(f = open_memstream(&dump, &size))) { | |
1260 | log_warning("Failed to allocate memory stream."); | |
1261 | break; | |
1262 | } | |
1263 | ||
1264 | manager_dump_units(m, f, "\t"); | |
1265 | manager_dump_jobs(m, f, "\t"); | |
1266 | ||
1267 | if (ferror(f)) { | |
1268 | fclose(f); | |
1269 | free(dump); | |
1270 | log_warning("Failed to write status stream"); | |
1271 | break; | |
1272 | } | |
1273 | ||
1274 | fclose(f); | |
1275 | log_dump(LOG_INFO, dump); | |
1276 | free(dump); | |
1277 | ||
1005d14f | 1278 | break; |
2149e37c | 1279 | } |
1005d14f | 1280 | |
a16e1123 LP |
1281 | case SIGHUP: |
1282 | m->exit_code = MANAGER_RELOAD; | |
1283 | break; | |
1284 | ||
7d793605 | 1285 | default: { |
253ee27a | 1286 | |
0003d1ab LP |
1287 | /* Starting SIGRTMIN+0 */ |
1288 | static const char * const target_table[] = { | |
7d793605 LP |
1289 | [0] = SPECIAL_DEFAULT_TARGET, |
1290 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 1291 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
1292 | [3] = SPECIAL_HALT_TARGET, |
1293 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
1294 | [5] = SPECIAL_REBOOT_TARGET, |
1295 | [6] = SPECIAL_KEXEC_TARGET | |
1296 | }; | |
1297 | ||
1298 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
1299 | static const ManagerExitCode code_table[] = { | |
1300 | [0] = MANAGER_HALT, | |
1301 | [1] = MANAGER_POWEROFF, | |
1302 | [2] = MANAGER_REBOOT, | |
1303 | [3] = MANAGER_KEXEC | |
7d793605 LP |
1304 | }; |
1305 | ||
1306 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 1307 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
1308 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
1309 | manager_start_target(m, target_table[idx], | |
1310 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
1311 | break; |
1312 | } | |
1313 | ||
0003d1ab LP |
1314 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
1315 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
1316 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
1317 | break; | |
1318 | } | |
1319 | ||
0658666b LP |
1320 | switch (sfsi.ssi_signo - SIGRTMIN) { |
1321 | ||
1322 | case 20: | |
1323 | log_debug("Enabling showing of status."); | |
27d340c7 | 1324 | manager_set_show_status(m, true); |
0658666b LP |
1325 | break; |
1326 | ||
1327 | case 21: | |
1328 | log_debug("Disabling showing of status."); | |
27d340c7 | 1329 | manager_set_show_status(m, false); |
0658666b LP |
1330 | break; |
1331 | ||
253ee27a LP |
1332 | case 22: |
1333 | log_set_max_level(LOG_DEBUG); | |
1334 | log_notice("Setting log level to debug."); | |
1335 | break; | |
1336 | ||
1337 | case 23: | |
1338 | log_set_max_level(LOG_INFO); | |
1339 | log_notice("Setting log level to info."); | |
1340 | break; | |
1341 | ||
600b704e LP |
1342 | case 24: |
1343 | if (m->running_as == SYSTEMD_USER) { | |
1344 | m->exit_code = MANAGER_EXIT; | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | /* This is a nop on init */ | |
1349 | break; | |
1350 | ||
4cfa2c99 LP |
1351 | case 26: |
1352 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1353 | log_notice("Setting log target to journal-or-kmsg."); | |
1354 | break; | |
1355 | ||
253ee27a LP |
1356 | case 27: |
1357 | log_set_target(LOG_TARGET_CONSOLE); | |
1358 | log_notice("Setting log target to console."); | |
1359 | break; | |
1360 | ||
1361 | case 28: | |
1362 | log_set_target(LOG_TARGET_KMSG); | |
1363 | log_notice("Setting log target to kmsg."); | |
1364 | break; | |
1365 | ||
1366 | case 29: | |
1367 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); | |
1368 | log_notice("Setting log target to syslog-or-kmsg."); | |
1369 | break; | |
1370 | ||
0658666b | 1371 | default: |
4e240ab0 | 1372 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 1373 | } |
b9cd2ec1 | 1374 | } |
7d793605 | 1375 | } |
9152c765 LP |
1376 | } |
1377 | ||
1378 | if (sigchld) | |
034c6ed7 LP |
1379 | return manager_dispatch_sigchld(m); |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
a16e1123 | 1384 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 1385 | int r; |
acbb0225 | 1386 | Watch *w; |
034c6ed7 LP |
1387 | |
1388 | assert(m); | |
1389 | assert(ev); | |
1390 | ||
3df5bf61 | 1391 | assert_se(w = ev->data.ptr); |
034c6ed7 | 1392 | |
40dde66f LP |
1393 | if (w->type == WATCH_INVALID) |
1394 | return 0; | |
1395 | ||
acbb0225 | 1396 | switch (w->type) { |
034c6ed7 | 1397 | |
ef734fd6 | 1398 | case WATCH_SIGNAL: |
034c6ed7 | 1399 | |
acbb0225 | 1400 | /* An incoming signal? */ |
f94ea366 | 1401 | if (ev->events != EPOLLIN) |
acbb0225 | 1402 | return -EINVAL; |
034c6ed7 | 1403 | |
a16e1123 | 1404 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 1405 | return r; |
034c6ed7 | 1406 | |
acbb0225 | 1407 | break; |
034c6ed7 | 1408 | |
8c47c732 LP |
1409 | case WATCH_NOTIFY: |
1410 | ||
1411 | /* An incoming daemon notification event? */ | |
1412 | if (ev->events != EPOLLIN) | |
1413 | return -EINVAL; | |
1414 | ||
1415 | if ((r = manager_process_notify_fd(m)) < 0) | |
1416 | return r; | |
1417 | ||
1418 | break; | |
1419 | ||
acbb0225 | 1420 | case WATCH_FD: |
034c6ed7 | 1421 | |
acbb0225 | 1422 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 1423 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 1424 | break; |
034c6ed7 | 1425 | |
faf919f1 LP |
1426 | case WATCH_UNIT_TIMER: |
1427 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
1428 | uint64_t v; |
1429 | ssize_t k; | |
034c6ed7 | 1430 | |
acbb0225 | 1431 | /* Some timer event, to be dispatched to the units */ |
68b29a9f LP |
1432 | k = read(w->fd, &v, sizeof(v)); |
1433 | if (k != sizeof(v)) { | |
034c6ed7 | 1434 | |
acbb0225 LP |
1435 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
1436 | break; | |
034c6ed7 | 1437 | |
8742514c | 1438 | log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read"); |
acbb0225 | 1439 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
1440 | } |
1441 | ||
faf919f1 LP |
1442 | if (w->type == WATCH_UNIT_TIMER) |
1443 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
1444 | else | |
1445 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
1446 | break; |
1447 | } | |
1448 | ||
ef734fd6 LP |
1449 | case WATCH_MOUNT: |
1450 | /* Some mount table change, intended for the mount subsystem */ | |
1451 | mount_fd_event(m, ev->events); | |
1452 | break; | |
1453 | ||
4e434314 LP |
1454 | case WATCH_SWAP: |
1455 | /* Some swap table change, intended for the swap subsystem */ | |
1456 | swap_fd_event(m, ev->events); | |
1457 | break; | |
1458 | ||
f94ea366 LP |
1459 | case WATCH_UDEV: |
1460 | /* Some notification from udev, intended for the device subsystem */ | |
1461 | device_fd_event(m, ev->events); | |
1462 | break; | |
1463 | ||
ea430986 LP |
1464 | case WATCH_DBUS_WATCH: |
1465 | bus_watch_event(m, w, ev->events); | |
1466 | break; | |
1467 | ||
1468 | case WATCH_DBUS_TIMEOUT: | |
1469 | bus_timeout_event(m, w, ev->events); | |
1470 | break; | |
1471 | ||
8742514c LP |
1472 | case WATCH_TIME_CHANGE: { |
1473 | Unit *u; | |
1474 | Iterator i; | |
1475 | ||
1476 | log_struct(LOG_INFO, | |
1477 | MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
1478 | "MESSAGE=Time has been changed", | |
1479 | NULL); | |
1480 | ||
1481 | /* Restart the watch */ | |
1482 | close_nointr_nofail(m->time_change_watch.fd); | |
1483 | watch_init(&m->time_change_watch); | |
1484 | manager_setup_time_change(m); | |
1485 | ||
1486 | HASHMAP_FOREACH(u, m->units, i) { | |
1487 | if (UNIT_VTABLE(u)->time_change) | |
1488 | UNIT_VTABLE(u)->time_change(u); | |
1489 | } | |
1490 | ||
1491 | break; | |
1492 | } | |
1493 | ||
acbb0225 | 1494 | default: |
c5fd1e57 | 1495 | log_error("event type=%i", w->type); |
acbb0225 | 1496 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 1497 | } |
9152c765 LP |
1498 | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | int manager_loop(Manager *m) { | |
1503 | int r; | |
9152c765 | 1504 | |
fac9f8df | 1505 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 1506 | |
9152c765 | 1507 | assert(m); |
a16e1123 | 1508 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 1509 | |
fe51822e LP |
1510 | /* Release the path cache */ |
1511 | set_free_free(m->unit_path_cache); | |
1512 | m->unit_path_cache = NULL; | |
1513 | ||
b0c918b9 LP |
1514 | manager_check_finished(m); |
1515 | ||
a4312405 LP |
1516 | /* There might still be some zombies hanging around from |
1517 | * before we were exec()'ed. Leat's reap them */ | |
e96d6be7 LP |
1518 | r = manager_dispatch_sigchld(m); |
1519 | if (r < 0) | |
a4312405 LP |
1520 | return r; |
1521 | ||
a16e1123 | 1522 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
1523 | struct epoll_event event; |
1524 | int n; | |
c757a65b | 1525 | int wait_msec = -1; |
9152c765 | 1526 | |
67445f4e | 1527 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) |
e96d6be7 LP |
1528 | watchdog_ping(); |
1529 | ||
ea430986 LP |
1530 | if (!ratelimit_test(&rl)) { |
1531 | /* Yay, something is going seriously wrong, pause a little */ | |
1532 | log_warning("Looping too fast. Throttling execution a little."); | |
1533 | sleep(1); | |
e96d6be7 | 1534 | continue; |
ea430986 LP |
1535 | } |
1536 | ||
37a8e683 | 1537 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
1538 | continue; |
1539 | ||
37a8e683 | 1540 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
1541 | continue; |
1542 | ||
37a8e683 | 1543 | if (bus_dispatch(m) > 0) |
c1e1601e | 1544 | continue; |
034c6ed7 | 1545 | |
37a8e683 | 1546 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
1547 | continue; |
1548 | ||
37a8e683 | 1549 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
1550 | continue; |
1551 | ||
1552 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 1553 | continue; |
ea430986 | 1554 | |
e04aad61 LP |
1555 | if (swap_dispatch_reload(m) > 0) |
1556 | continue; | |
1557 | ||
c757a65b | 1558 | /* Sleep for half the watchdog time */ |
67445f4e | 1559 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) { |
c757a65b LP |
1560 | wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC); |
1561 | if (wait_msec <= 0) | |
1562 | wait_msec = 1; | |
1563 | } else | |
1564 | wait_msec = -1; | |
1565 | ||
e96d6be7 LP |
1566 | n = epoll_wait(m->epoll_fd, &event, 1, wait_msec); |
1567 | if (n < 0) { | |
9152c765 | 1568 | |
6089f4a9 | 1569 | if (errno == EINTR) |
9152c765 LP |
1570 | continue; |
1571 | ||
1572 | return -errno; | |
e96d6be7 LP |
1573 | } else if (n == 0) |
1574 | continue; | |
9152c765 | 1575 | |
957ca890 | 1576 | assert(n == 1); |
b9cd2ec1 | 1577 | |
e96d6be7 LP |
1578 | r = process_event(m, &event); |
1579 | if (r < 0) | |
957ca890 | 1580 | return r; |
a16e1123 | 1581 | } |
957ca890 | 1582 | |
a16e1123 | 1583 | return m->exit_code; |
83c60c9f | 1584 | } |
ea430986 | 1585 | |
80fbf05e | 1586 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { |
ea430986 LP |
1587 | char *n; |
1588 | Unit *u; | |
80fbf05e | 1589 | int r; |
ea430986 LP |
1590 | |
1591 | assert(m); | |
1592 | assert(s); | |
1593 | assert(_u); | |
1594 | ||
1595 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
1596 | return -EINVAL; | |
1597 | ||
80fbf05e MS |
1598 | n = bus_path_unescape(s+31); |
1599 | if (!n) | |
ea430986 LP |
1600 | return -ENOMEM; |
1601 | ||
80fbf05e | 1602 | r = manager_load_unit(m, n, NULL, e, &u); |
ea430986 LP |
1603 | free(n); |
1604 | ||
80fbf05e MS |
1605 | if (r < 0) |
1606 | return r; | |
ea430986 LP |
1607 | |
1608 | *_u = u; | |
1609 | ||
1610 | return 0; | |
1611 | } | |
86fbf370 LP |
1612 | |
1613 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
1614 | Job *j; | |
1615 | unsigned id; | |
1616 | int r; | |
1617 | ||
1618 | assert(m); | |
1619 | assert(s); | |
1620 | assert(_j); | |
1621 | ||
1622 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
1623 | return -EINVAL; | |
1624 | ||
8742514c LP |
1625 | r = safe_atou(s + 30, &id); |
1626 | if (r < 0) | |
86fbf370 LP |
1627 | return r; |
1628 | ||
8742514c LP |
1629 | j = manager_get_job(m, id); |
1630 | if (!j) | |
86fbf370 LP |
1631 | return -ENOENT; |
1632 | ||
1633 | *_j = j; | |
1634 | ||
1635 | return 0; | |
1636 | } | |
dfcd764e | 1637 | |
4927fcae | 1638 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 1639 | |
4927fcae LP |
1640 | #ifdef HAVE_AUDIT |
1641 | char *p; | |
c1165f82 | 1642 | int audit_fd; |
e537352b | 1643 | |
c1165f82 LP |
1644 | audit_fd = get_audit_fd(); |
1645 | if (audit_fd < 0) | |
e537352b LP |
1646 | return; |
1647 | ||
bbd3a7ba LP |
1648 | /* Don't generate audit events if the service was already |
1649 | * started and we're just deserializing */ | |
a7556052 | 1650 | if (m->n_reloading > 0) |
bbd3a7ba LP |
1651 | return; |
1652 | ||
67445f4e | 1653 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
1654 | return; |
1655 | ||
ac155bb8 | 1656 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
1657 | return; |
1658 | ||
ac155bb8 | 1659 | if (!(p = unit_name_to_prefix_and_instance(u->id))) { |
4927fcae | 1660 | log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); |
e537352b LP |
1661 | return; |
1662 | } | |
1663 | ||
c1165f82 | 1664 | if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
391ade86 LP |
1665 | if (errno == EPERM) { |
1666 | /* We aren't allowed to send audit messages? | |
44785992 | 1667 | * Then let's not retry again. */ |
c1165f82 | 1668 | close_audit_fd(); |
44785992 LP |
1669 | } else |
1670 | log_warning("Failed to send audit message: %m"); | |
391ade86 | 1671 | } |
e537352b | 1672 | |
4927fcae LP |
1673 | free(p); |
1674 | #endif | |
e537352b | 1675 | |
e537352b LP |
1676 | } |
1677 | ||
e983b760 LP |
1678 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
1679 | int fd = -1; | |
1680 | union sockaddr_union sa; | |
1681 | int n = 0; | |
1682 | char *message = NULL; | |
e983b760 LP |
1683 | |
1684 | /* Don't generate plymouth events if the service was already | |
1685 | * started and we're just deserializing */ | |
a7556052 | 1686 | if (m->n_reloading > 0) |
e983b760 LP |
1687 | return; |
1688 | ||
67445f4e | 1689 | if (m->running_as != SYSTEMD_SYSTEM) |
e983b760 LP |
1690 | return; |
1691 | ||
ac155bb8 MS |
1692 | if (u->type != UNIT_SERVICE && |
1693 | u->type != UNIT_MOUNT && | |
1694 | u->type != UNIT_SWAP) | |
e983b760 LP |
1695 | return; |
1696 | ||
1697 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
1698 | * message then wait for plymouth */ | |
1699 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
1700 | log_error("socket() failed: %m"); | |
1701 | return; | |
1702 | } | |
1703 | ||
1704 | zero(sa); | |
1705 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
1706 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
1707 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
1708 | |
1709 | if (errno != EPIPE && | |
1710 | errno != EAGAIN && | |
1711 | errno != ENOENT && | |
1712 | errno != ECONNREFUSED && | |
1713 | errno != ECONNRESET && | |
1714 | errno != ECONNABORTED) | |
1715 | log_error("connect() failed: %m"); | |
1716 | ||
1717 | goto finish; | |
1718 | } | |
1719 | ||
ac155bb8 | 1720 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 1721 | log_oom(); |
e983b760 LP |
1722 | goto finish; |
1723 | } | |
1724 | ||
1725 | errno = 0; | |
bd40a2d8 | 1726 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
1727 | |
1728 | if (errno != EPIPE && | |
1729 | errno != EAGAIN && | |
1730 | errno != ENOENT && | |
1731 | errno != ECONNREFUSED && | |
1732 | errno != ECONNRESET && | |
1733 | errno != ECONNABORTED) | |
1734 | log_error("Failed to write Plymouth message: %m"); | |
1735 | ||
1736 | goto finish; | |
1737 | } | |
1738 | ||
1739 | finish: | |
1740 | if (fd >= 0) | |
1741 | close_nointr_nofail(fd); | |
1742 | ||
1743 | free(message); | |
1744 | } | |
1745 | ||
05e343b7 LP |
1746 | void manager_dispatch_bus_name_owner_changed( |
1747 | Manager *m, | |
1748 | const char *name, | |
1749 | const char* old_owner, | |
1750 | const char *new_owner) { | |
1751 | ||
1752 | Unit *u; | |
1753 | ||
1754 | assert(m); | |
1755 | assert(name); | |
1756 | ||
1757 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1758 | return; | |
1759 | ||
1760 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
1761 | } | |
1762 | ||
1763 | void manager_dispatch_bus_query_pid_done( | |
1764 | Manager *m, | |
1765 | const char *name, | |
1766 | pid_t pid) { | |
1767 | ||
1768 | Unit *u; | |
1769 | ||
1770 | assert(m); | |
1771 | assert(name); | |
1772 | assert(pid >= 1); | |
1773 | ||
1774 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1775 | return; | |
1776 | ||
1777 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
1778 | } | |
1779 | ||
d8d5ab98 | 1780 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 1781 | char *path = NULL; |
a16e1123 LP |
1782 | mode_t saved_umask; |
1783 | int fd; | |
1784 | FILE *f; | |
1785 | ||
1786 | assert(_f); | |
1787 | ||
67445f4e | 1788 | if (m->running_as == SYSTEMD_SYSTEM) |
2b583ce6 | 1789 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
1790 | else |
1791 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 1792 | |
b925e726 LP |
1793 | if (!path) |
1794 | return -ENOMEM; | |
a16e1123 LP |
1795 | |
1796 | saved_umask = umask(0077); | |
1797 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
1798 | umask(saved_umask); | |
1799 | ||
1800 | if (fd < 0) { | |
1801 | free(path); | |
1802 | return -errno; | |
1803 | } | |
1804 | ||
1805 | unlink(path); | |
1806 | ||
1807 | log_debug("Serializing state to %s", path); | |
1808 | free(path); | |
1809 | ||
da19d5c1 | 1810 | if (!(f = fdopen(fd, "w+"))) |
a16e1123 LP |
1811 | return -errno; |
1812 | ||
1813 | *_f = f; | |
1814 | ||
1815 | return 0; | |
1816 | } | |
1817 | ||
6b78f9b4 | 1818 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
1819 | Iterator i; |
1820 | Unit *u; | |
1821 | const char *t; | |
1822 | int r; | |
1823 | ||
1824 | assert(m); | |
1825 | assert(f); | |
1826 | assert(fds); | |
1827 | ||
a7556052 | 1828 | m->n_reloading ++; |
38c52d46 | 1829 | |
01d67b43 LP |
1830 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
1831 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
33c5fae9 LP |
1832 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
1833 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 1834 | |
915b3753 LP |
1835 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
1836 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); | |
1837 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); | |
e9ddabc2 | 1838 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 1839 | |
26a1efdf | 1840 | if (!in_initrd()) { |
915b3753 | 1841 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 HH |
1842 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
1843 | } | |
47a483a1 | 1844 | |
f2382a94 LP |
1845 | fputc('\n', f); |
1846 | ||
a16e1123 | 1847 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 1848 | if (u->id != t) |
a16e1123 LP |
1849 | continue; |
1850 | ||
1851 | if (!unit_can_serialize(u)) | |
1852 | continue; | |
1853 | ||
1854 | /* Start marker */ | |
ac155bb8 | 1855 | fputs(u->id, f); |
a16e1123 LP |
1856 | fputc('\n', f); |
1857 | ||
6b78f9b4 | 1858 | if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) { |
a7556052 | 1859 | m->n_reloading --; |
a16e1123 | 1860 | return r; |
38c52d46 | 1861 | } |
a16e1123 LP |
1862 | } |
1863 | ||
a7556052 LP |
1864 | assert(m->n_reloading > 0); |
1865 | m->n_reloading --; | |
38c52d46 | 1866 | |
a16e1123 LP |
1867 | if (ferror(f)) |
1868 | return -EIO; | |
1869 | ||
b23de6af LP |
1870 | r = bus_fdset_add_all(m, fds); |
1871 | if (r < 0) | |
1872 | return r; | |
1873 | ||
a16e1123 LP |
1874 | return 0; |
1875 | } | |
1876 | ||
1877 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
1878 | int r = 0; | |
1879 | ||
1880 | assert(m); | |
1881 | assert(f); | |
1882 | ||
1883 | log_debug("Deserializing state..."); | |
1884 | ||
a7556052 | 1885 | m->n_reloading ++; |
82c64bf5 | 1886 | |
10f8e83c | 1887 | for (;;) { |
20c03b7b | 1888 | char line[LINE_MAX], *l; |
10f8e83c LP |
1889 | |
1890 | if (!fgets(line, sizeof(line), f)) { | |
1891 | if (feof(f)) | |
1892 | r = 0; | |
1893 | else | |
1894 | r = -errno; | |
1895 | ||
1896 | goto finish; | |
1897 | } | |
1898 | ||
1899 | char_array_0(line); | |
1900 | l = strstrip(line); | |
1901 | ||
1902 | if (l[0] == 0) | |
1903 | break; | |
1904 | ||
01d67b43 LP |
1905 | if (startswith(l, "current-job-id=")) { |
1906 | uint32_t id; | |
1907 | ||
1908 | if (safe_atou32(l+15, &id) < 0) | |
1909 | log_debug("Failed to parse current job id value %s", l+15); | |
1910 | else | |
1911 | m->current_job_id = MAX(m->current_job_id, id); | |
33c5fae9 LP |
1912 | } else if (startswith(l, "n-installed-jobs=")) { |
1913 | uint32_t n; | |
1914 | ||
1915 | if (safe_atou32(l+17, &n) < 0) | |
1916 | log_debug("Failed to parse installed jobs counter %s", l+17); | |
1917 | else | |
1918 | m->n_installed_jobs += n; | |
1919 | } else if (startswith(l, "n-failed-jobs=")) { | |
1920 | uint32_t n; | |
1921 | ||
1922 | if (safe_atou32(l+14, &n) < 0) | |
1923 | log_debug("Failed to parse failed jobs counter %s", l+14); | |
1924 | else | |
1925 | m->n_failed_jobs += n; | |
01d67b43 LP |
1926 | } else if (startswith(l, "taint-usr=")) { |
1927 | int b; | |
1928 | ||
1929 | if ((b = parse_boolean(l+10)) < 0) | |
1930 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
1931 | else | |
1932 | m->taint_usr = m->taint_usr || b; | |
915b3753 LP |
1933 | } else if (startswith(l, "firmware-timestamp=")) |
1934 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
1935 | else if (startswith(l, "loader-timestamp=")) | |
1936 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
1937 | else if (startswith(l, "kernel-timestamp=")) | |
1938 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
1939 | else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 | 1940 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
915b3753 LP |
1941 | else if (startswith(l, "userspace-timestamp=")) |
1942 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
10717a1a | 1943 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 1944 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
10717a1a | 1945 | else |
10f8e83c LP |
1946 | log_debug("Unknown serialization item '%s'", l); |
1947 | } | |
1948 | ||
a16e1123 LP |
1949 | for (;;) { |
1950 | Unit *u; | |
1951 | char name[UNIT_NAME_MAX+2]; | |
1952 | ||
1953 | /* Start marker */ | |
1954 | if (!fgets(name, sizeof(name), f)) { | |
1955 | if (feof(f)) | |
10f8e83c LP |
1956 | r = 0; |
1957 | else | |
1958 | r = -errno; | |
a16e1123 | 1959 | |
82c64bf5 | 1960 | goto finish; |
a16e1123 LP |
1961 | } |
1962 | ||
1963 | char_array_0(name); | |
1964 | ||
398ef8ba | 1965 | if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0) |
82c64bf5 | 1966 | goto finish; |
a16e1123 LP |
1967 | |
1968 | if ((r = unit_deserialize(u, f, fds)) < 0) | |
82c64bf5 | 1969 | goto finish; |
a16e1123 LP |
1970 | } |
1971 | ||
10f8e83c | 1972 | finish: |
82c64bf5 LP |
1973 | if (ferror(f)) { |
1974 | r = -EIO; | |
1975 | goto finish; | |
1976 | } | |
a16e1123 | 1977 | |
a7556052 LP |
1978 | assert(m->n_reloading > 0); |
1979 | m->n_reloading --; | |
82c64bf5 LP |
1980 | |
1981 | return r; | |
a16e1123 LP |
1982 | } |
1983 | ||
1984 | int manager_reload(Manager *m) { | |
1985 | int r, q; | |
1986 | FILE *f; | |
1987 | FDSet *fds; | |
1988 | ||
1989 | assert(m); | |
1990 | ||
07719a21 LP |
1991 | r = manager_open_serialization(m, &f); |
1992 | if (r < 0) | |
a16e1123 LP |
1993 | return r; |
1994 | ||
a7556052 | 1995 | m->n_reloading ++; |
38c52d46 | 1996 | |
07719a21 LP |
1997 | fds = fdset_new(); |
1998 | if (!fds) { | |
a7556052 | 1999 | m->n_reloading --; |
a16e1123 LP |
2000 | r = -ENOMEM; |
2001 | goto finish; | |
2002 | } | |
2003 | ||
6b78f9b4 | 2004 | r = manager_serialize(m, f, fds, true); |
07719a21 | 2005 | if (r < 0) { |
a7556052 | 2006 | m->n_reloading --; |
a16e1123 | 2007 | goto finish; |
38c52d46 | 2008 | } |
a16e1123 LP |
2009 | |
2010 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
a7556052 | 2011 | m->n_reloading --; |
a16e1123 LP |
2012 | r = -errno; |
2013 | goto finish; | |
2014 | } | |
2015 | ||
2016 | /* From here on there is no way back. */ | |
2017 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 2018 | manager_undo_generators(m); |
84e3543e | 2019 | lookup_paths_free(&m->lookup_paths); |
2ded0c04 | 2020 | |
07719a21 | 2021 | /* Find new unit paths */ |
5a1e9937 LP |
2022 | manager_run_generators(m); |
2023 | ||
07719a21 LP |
2024 | q = lookup_paths_init( |
2025 | &m->lookup_paths, m->running_as, true, | |
2026 | m->generator_unit_path, | |
2027 | m->generator_unit_path_early, | |
2028 | m->generator_unit_path_late); | |
2029 | if (q < 0) | |
2030 | r = q; | |
2031 | ||
5a1e9937 LP |
2032 | manager_build_unit_path_cache(m); |
2033 | ||
a16e1123 | 2034 | /* First, enumerate what we can from all config files */ |
07719a21 LP |
2035 | q = manager_enumerate(m); |
2036 | if (q < 0) | |
a16e1123 LP |
2037 | r = q; |
2038 | ||
2039 | /* Second, deserialize our stored data */ | |
07719a21 LP |
2040 | q = manager_deserialize(m, f, fds); |
2041 | if (q < 0) | |
a16e1123 LP |
2042 | r = q; |
2043 | ||
2044 | fclose(f); | |
2045 | f = NULL; | |
2046 | ||
2047 | /* Third, fire things up! */ | |
07719a21 LP |
2048 | q = manager_coldplug(m); |
2049 | if (q < 0) | |
a16e1123 LP |
2050 | r = q; |
2051 | ||
a7556052 LP |
2052 | assert(m->n_reloading > 0); |
2053 | m->n_reloading--; | |
9f611ad8 | 2054 | |
a16e1123 LP |
2055 | finish: |
2056 | if (f) | |
2057 | fclose(f); | |
2058 | ||
2059 | if (fds) | |
2060 | fdset_free(fds); | |
2061 | ||
2062 | return r; | |
2063 | } | |
2064 | ||
9e58ff9c LP |
2065 | bool manager_is_booting_or_shutting_down(Manager *m) { |
2066 | Unit *u; | |
2067 | ||
2068 | assert(m); | |
2069 | ||
2070 | /* Is the initial job still around? */ | |
bacbccb7 | 2071 | if (manager_get_job(m, m->default_unit_job_id)) |
9e58ff9c LP |
2072 | return true; |
2073 | ||
2074 | /* Is there a job for the shutdown target? */ | |
27d340c7 LP |
2075 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
2076 | if (u) | |
ac155bb8 | 2077 | return !!u->job; |
9e58ff9c LP |
2078 | |
2079 | return false; | |
2080 | } | |
2081 | ||
fdf20a31 | 2082 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2083 | Unit *u; |
2084 | Iterator i; | |
2085 | ||
2086 | assert(m); | |
2087 | ||
2088 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2089 | unit_reset_failed(u); |
5632e374 LP |
2090 | } |
2091 | ||
8f6df3fa LP |
2092 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
2093 | Unit *u; | |
2094 | ||
2095 | assert(m); | |
2096 | assert(name); | |
2097 | ||
2098 | /* Returns true if the unit is inactive or going down */ | |
8f6df3fa LP |
2099 | if (!(u = manager_get_unit(m, name))) |
2100 | return true; | |
2101 | ||
18ffdfda | 2102 | return unit_pending_inactive(u); |
8f6df3fa LP |
2103 | } |
2104 | ||
b0c918b9 | 2105 | void manager_check_finished(Manager *m) { |
7ceba241 | 2106 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2107 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 LP |
2108 | |
2109 | assert(m); | |
2110 | ||
f2b68789 | 2111 | if (hashmap_size(m->jobs) > 0) |
b0c918b9 LP |
2112 | return; |
2113 | ||
f2b68789 LP |
2114 | /* Notify Type=idle units that we are done now */ |
2115 | close_pipe(m->idle_pipe); | |
2116 | ||
af6da548 LP |
2117 | /* Turn off confirm spawn now */ |
2118 | m->confirm_spawn = false; | |
2119 | ||
f2b68789 | 2120 | if (dual_timestamp_is_set(&m->finish_timestamp)) |
b0c918b9 LP |
2121 | return; |
2122 | ||
2123 | dual_timestamp_get(&m->finish_timestamp); | |
2124 | ||
67445f4e | 2125 | if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) { |
e03ae661 | 2126 | |
915b3753 LP |
2127 | /* Note that m->kernel_usec.monotonic is always at 0, |
2128 | * and m->firmware_usec.monotonic and | |
2129 | * m->loader_usec.monotonic should be considered | |
2130 | * negative values. */ | |
2131 | ||
7ceba241 LP |
2132 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2133 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2134 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2135 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2136 | |
e9ddabc2 | 2137 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2138 | |
915b3753 LP |
2139 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2140 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2141 | |
81270860 LP |
2142 | if (!log_on_console()) |
2143 | log_struct(LOG_INFO, | |
1ca6783f | 2144 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2145 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2146 | "INITRD_USEC=%llu", (unsigned long long) initrd_usec, | |
2147 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2148 | "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", | |
2149 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2150 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2151 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2152 | format_timespan(sum, sizeof(sum), total_usec), | |
2153 | NULL); | |
18fa6b27 | 2154 | } else { |
915b3753 | 2155 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2156 | initrd_usec = 0; |
2157 | ||
81270860 LP |
2158 | if (!log_on_console()) |
2159 | log_struct(LOG_INFO, | |
1ca6783f | 2160 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2161 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2162 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2163 | "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.", | |
2164 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2165 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2166 | format_timespan(sum, sizeof(sum), total_usec), | |
2167 | NULL); | |
18fa6b27 LP |
2168 | } |
2169 | } else { | |
915b3753 LP |
2170 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
2171 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
877d54e9 | 2172 | |
81270860 LP |
2173 | if (!log_on_console()) |
2174 | log_struct(LOG_INFO, | |
1ca6783f | 2175 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2176 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, |
2177 | "MESSAGE=Startup finished in %s.", | |
2178 | format_timespan(sum, sizeof(sum), total_usec), | |
2179 | NULL); | |
18fa6b27 | 2180 | } |
b0c918b9 | 2181 | |
915b3753 | 2182 | bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2183 | |
2184 | sd_notifyf(false, | |
2185 | "READY=1\nSTATUS=Startup finished in %s.", | |
2186 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2187 | } |
2188 | ||
07719a21 LP |
2189 | static int create_generator_dir(Manager *m, char **generator, const char *name) { |
2190 | char *p; | |
2191 | int r; | |
2192 | ||
2193 | assert(m); | |
2194 | assert(generator); | |
2195 | assert(name); | |
2196 | ||
2197 | if (*generator) | |
2198 | return 0; | |
2199 | ||
67445f4e | 2200 | if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) { |
07719a21 LP |
2201 | |
2202 | p = strappend("/run/systemd/", name); | |
0d0f0c50 SL |
2203 | if (!p) |
2204 | return log_oom(); | |
07719a21 | 2205 | |
d2e54fae | 2206 | r = mkdir_p_label(p, 0755); |
07719a21 LP |
2207 | if (r < 0) { |
2208 | log_error("Failed to create generator directory: %s", strerror(-r)); | |
2209 | free(p); | |
2210 | return r; | |
2211 | } | |
2212 | } else { | |
b7def684 | 2213 | p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); |
0d0f0c50 SL |
2214 | if (!p) |
2215 | return log_oom(); | |
07719a21 LP |
2216 | |
2217 | if (!mkdtemp(p)) { | |
2218 | free(p); | |
2219 | log_error("Failed to create generator directory: %m"); | |
2220 | return -errno; | |
2221 | } | |
2222 | } | |
2223 | ||
2224 | *generator = p; | |
2225 | return 0; | |
2226 | } | |
2227 | ||
2228 | static void trim_generator_dir(Manager *m, char **generator) { | |
2229 | assert(m); | |
2230 | assert(generator); | |
2231 | ||
2232 | if (!*generator) | |
2233 | return; | |
2234 | ||
2235 | if (rmdir(*generator) >= 0) { | |
2236 | free(*generator); | |
2237 | *generator = NULL; | |
2238 | } | |
2239 | ||
2240 | return; | |
2241 | } | |
2242 | ||
5a1e9937 LP |
2243 | void manager_run_generators(Manager *m) { |
2244 | DIR *d = NULL; | |
5a1e9937 | 2245 | const char *generator_path; |
07719a21 | 2246 | const char *argv[5]; |
07f8a4aa | 2247 | mode_t u; |
07719a21 | 2248 | int r; |
5a1e9937 LP |
2249 | |
2250 | assert(m); | |
2251 | ||
67445f4e | 2252 | generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
07719a21 LP |
2253 | d = opendir(generator_path); |
2254 | if (!d) { | |
5a1e9937 LP |
2255 | if (errno == ENOENT) |
2256 | return; | |
2257 | ||
2258 | log_error("Failed to enumerate generator directory: %m"); | |
2259 | return; | |
2260 | } | |
2261 | ||
07719a21 LP |
2262 | r = create_generator_dir(m, &m->generator_unit_path, "generator"); |
2263 | if (r < 0) | |
2264 | goto finish; | |
f1d19aa4 | 2265 | |
07719a21 LP |
2266 | r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early"); |
2267 | if (r < 0) | |
2268 | goto finish; | |
5a1e9937 | 2269 | |
07719a21 LP |
2270 | r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late"); |
2271 | if (r < 0) | |
2272 | goto finish; | |
5a1e9937 | 2273 | |
83cc030f LP |
2274 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
2275 | argv[1] = m->generator_unit_path; | |
07719a21 LP |
2276 | argv[2] = m->generator_unit_path_early; |
2277 | argv[3] = m->generator_unit_path_late; | |
2278 | argv[4] = NULL; | |
5a1e9937 | 2279 | |
07f8a4aa | 2280 | u = umask(0022); |
83cc030f | 2281 | execute_directory(generator_path, d, (char**) argv); |
07f8a4aa | 2282 | umask(u); |
5a1e9937 | 2283 | |
07719a21 LP |
2284 | trim_generator_dir(m, &m->generator_unit_path); |
2285 | trim_generator_dir(m, &m->generator_unit_path_early); | |
2286 | trim_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2287 | |
2288 | finish: | |
2289 | if (d) | |
2290 | closedir(d); | |
5a1e9937 LP |
2291 | } |
2292 | ||
07719a21 | 2293 | static void remove_generator_dir(Manager *m, char **generator) { |
5a1e9937 | 2294 | assert(m); |
07719a21 | 2295 | assert(generator); |
5a1e9937 | 2296 | |
07719a21 | 2297 | if (!*generator) |
5a1e9937 LP |
2298 | return; |
2299 | ||
07719a21 LP |
2300 | strv_remove(m->lookup_paths.unit_path, *generator); |
2301 | rm_rf(*generator, false, true, false); | |
5a1e9937 | 2302 | |
07719a21 LP |
2303 | free(*generator); |
2304 | *generator = NULL; | |
2305 | } | |
2306 | ||
2307 | void manager_undo_generators(Manager *m) { | |
2308 | assert(m); | |
2309 | ||
2310 | remove_generator_dir(m, &m->generator_unit_path); | |
2311 | remove_generator_dir(m, &m->generator_unit_path_early); | |
2312 | remove_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2313 | } |
2314 | ||
06d4c99a LP |
2315 | int manager_set_default_controllers(Manager *m, char **controllers) { |
2316 | char **l; | |
2317 | ||
2318 | assert(m); | |
2319 | ||
9156e799 LP |
2320 | l = strv_copy(controllers); |
2321 | if (!l) | |
06d4c99a LP |
2322 | return -ENOMEM; |
2323 | ||
2324 | strv_free(m->default_controllers); | |
2325 | m->default_controllers = l; | |
2326 | ||
b59e2465 | 2327 | cg_shorten_controllers(m->default_controllers); |
9156e799 | 2328 | |
06d4c99a LP |
2329 | return 0; |
2330 | } | |
2331 | ||
c93ff2e9 FC |
2332 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
2333 | int i; | |
2334 | ||
2335 | assert(m); | |
2336 | ||
2337 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
07719a21 LP |
2338 | if (!default_rlimit[i]) |
2339 | continue; | |
c93ff2e9 | 2340 | |
07719a21 LP |
2341 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
2342 | if (!m->rlimit[i]) | |
2343 | return -ENOMEM; | |
c93ff2e9 FC |
2344 | } |
2345 | ||
2346 | return 0; | |
2347 | } | |
2348 | ||
4cfa2c99 | 2349 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
2350 | Unit *u; |
2351 | ||
2352 | assert(m); | |
2353 | ||
67445f4e | 2354 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
2355 | return; |
2356 | ||
731a676c LP |
2357 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
2358 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 2359 | log_close_journal(); |
731a676c | 2360 | return; |
f1dd0c3f LP |
2361 | } |
2362 | ||
731a676c LP |
2363 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
2364 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 2365 | log_close_journal(); |
731a676c LP |
2366 | return; |
2367 | } | |
f1dd0c3f | 2368 | |
731a676c LP |
2369 | /* Hmm, OK, so the socket is fully up and the service is up |
2370 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
2371 | log_open(); |
2372 | } | |
2373 | ||
27d340c7 LP |
2374 | void manager_set_show_status(Manager *m, bool b) { |
2375 | assert(m); | |
2376 | ||
67445f4e | 2377 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2378 | return; |
2379 | ||
2380 | m->show_status = b; | |
2381 | ||
2382 | if (b) | |
2383 | touch("/run/systemd/show-status"); | |
2384 | else | |
2385 | unlink("/run/systemd/show-status"); | |
2386 | } | |
2387 | ||
2388 | bool manager_get_show_status(Manager *m) { | |
2389 | assert(m); | |
2390 | ||
67445f4e | 2391 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2392 | return false; |
2393 | ||
2394 | if (m->show_status) | |
2395 | return true; | |
2396 | ||
2397 | /* If Plymouth is running make sure we show the status, so | |
2398 | * that there's something nice to see when people press Esc */ | |
2399 | ||
2400 | return plymouth_running(); | |
2401 | } | |
68b29a9f LP |
2402 | |
2403 | void watch_init(Watch *w) { | |
2404 | assert(w); | |
2405 | ||
2406 | w->type = WATCH_INVALID; | |
2407 | w->fd = -1; | |
2408 | } |