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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) { | |
66870f90 | 490 | log_debug_unit(u->id, "Collecting %s", u->id); |
595ed347 MS |
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 | ||
bd0af849 ZJS |
637 | d = opendir(*i); |
638 | if (!d) { | |
fe51822e LP |
639 | log_error("Failed to open directory: %m"); |
640 | continue; | |
641 | } | |
642 | ||
643 | while ((de = readdir(d))) { | |
644 | char *p; | |
645 | ||
646 | if (ignore_file(de->d_name)) | |
647 | continue; | |
648 | ||
b7def684 | 649 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
44d91056 | 650 | if (!p) { |
fe51822e LP |
651 | r = -ENOMEM; |
652 | goto fail; | |
653 | } | |
654 | ||
655 | if ((r = set_put(m->unit_path_cache, p)) < 0) { | |
656 | free(p); | |
657 | goto fail; | |
658 | } | |
659 | } | |
660 | ||
661 | closedir(d); | |
662 | d = NULL; | |
663 | } | |
664 | ||
665 | return; | |
666 | ||
667 | fail: | |
668 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
669 | ||
670 | set_free_free(m->unit_path_cache); | |
671 | m->unit_path_cache = NULL; | |
672 | ||
673 | if (d) | |
674 | closedir(d); | |
675 | } | |
676 | ||
a16e1123 LP |
677 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
678 | int r, q; | |
679 | ||
680 | assert(m); | |
681 | ||
5a1e9937 LP |
682 | manager_run_generators(m); |
683 | ||
07719a21 LP |
684 | r = lookup_paths_init( |
685 | &m->lookup_paths, m->running_as, true, | |
686 | m->generator_unit_path, | |
687 | m->generator_unit_path_early, | |
688 | m->generator_unit_path_late); | |
689 | if (r < 0) | |
690 | return r; | |
691 | ||
fe51822e LP |
692 | manager_build_unit_path_cache(m); |
693 | ||
9f611ad8 LP |
694 | /* If we will deserialize make sure that during enumeration |
695 | * this is already known, so we increase the counter here | |
696 | * already */ | |
697 | if (serialization) | |
a7556052 | 698 | m->n_reloading ++; |
9f611ad8 | 699 | |
a16e1123 LP |
700 | /* First, enumerate what we can from all config files */ |
701 | r = manager_enumerate(m); | |
702 | ||
703 | /* Second, deserialize if there is something to deserialize */ | |
07719a21 LP |
704 | if (serialization) { |
705 | q = manager_deserialize(m, serialization, fds); | |
706 | if (q < 0) | |
a16e1123 | 707 | r = q; |
07719a21 | 708 | } |
a16e1123 | 709 | |
01e10de3 LP |
710 | /* Any fds left? Find some unit which wants them. This is |
711 | * useful to allow container managers to pass some file | |
712 | * descriptors to us pre-initialized. This enables | |
713 | * socket-based activation of entire containers. */ | |
714 | if (fdset_size(fds) > 0) { | |
715 | q = manager_distribute_fds(m, fds); | |
716 | if (q < 0) | |
717 | r = q; | |
718 | } | |
719 | ||
a16e1123 | 720 | /* Third, fire things up! */ |
07719a21 LP |
721 | q = manager_coldplug(m); |
722 | if (q < 0) | |
a16e1123 LP |
723 | r = q; |
724 | ||
9f611ad8 | 725 | if (serialization) { |
a7556052 LP |
726 | assert(m->n_reloading > 0); |
727 | m->n_reloading --; | |
9f611ad8 LP |
728 | } |
729 | ||
a16e1123 | 730 | return r; |
f50e0a01 LP |
731 | } |
732 | ||
398ef8ba | 733 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 | 734 | int r; |
7527cb52 | 735 | Transaction *tr; |
e5b5ae50 LP |
736 | |
737 | assert(m); | |
738 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 739 | assert(unit); |
e5b5ae50 | 740 | assert(mode < _JOB_MODE_MAX); |
60918275 | 741 | |
398ef8ba LP |
742 | if (mode == JOB_ISOLATE && type != JOB_START) { |
743 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 744 | return -EINVAL; |
398ef8ba | 745 | } |
c497c7a9 | 746 | |
ac155bb8 | 747 | if (mode == JOB_ISOLATE && !unit->allow_isolate) { |
2528a7a6 LP |
748 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
749 | return -EPERM; | |
750 | } | |
751 | ||
66870f90 ZJS |
752 | log_debug_unit(unit->id, |
753 | "Trying to enqueue job %s/%s/%s", unit->id, | |
754 | job_type_to_string(type), job_mode_to_string(mode)); | |
9f04bd52 | 755 | |
e0209d83 MS |
756 | job_type_collapse(&type, unit); |
757 | ||
7527cb52 MS |
758 | tr = transaction_new(); |
759 | if (!tr) | |
760 | return -ENOMEM; | |
11dd41ce | 761 | |
7527cb52 MS |
762 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false, |
763 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
b94fbd30 | 764 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
765 | if (r < 0) |
766 | goto tr_abort; | |
c497c7a9 | 767 | |
7527cb52 MS |
768 | if (mode == JOB_ISOLATE) { |
769 | r = transaction_add_isolate_jobs(tr, m); | |
770 | if (r < 0) | |
771 | goto tr_abort; | |
772 | } | |
773 | ||
774 | r = transaction_activate(tr, m, mode, e); | |
775 | if (r < 0) | |
776 | goto tr_abort; | |
e5b5ae50 | 777 | |
66870f90 ZJS |
778 | log_debug_unit(unit->id, |
779 | "Enqueued job %s/%s as %u", unit->id, | |
780 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 781 | |
e5b5ae50 | 782 | if (_ret) |
b94fbd30 | 783 | *_ret = tr->anchor_job; |
60918275 | 784 | |
7527cb52 | 785 | transaction_free(tr); |
e5b5ae50 | 786 | return 0; |
7527cb52 MS |
787 | |
788 | tr_abort: | |
789 | transaction_abort(tr); | |
790 | transaction_free(tr); | |
791 | return r; | |
e5b5ae50 | 792 | } |
60918275 | 793 | |
398ef8ba | 794 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
795 | Unit *unit; |
796 | int r; | |
797 | ||
798 | assert(m); | |
799 | assert(type < _JOB_TYPE_MAX); | |
800 | assert(name); | |
801 | assert(mode < _JOB_MODE_MAX); | |
802 | ||
c3090674 LP |
803 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
804 | if (r < 0) | |
28247076 LP |
805 | return r; |
806 | ||
398ef8ba | 807 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
808 | } |
809 | ||
60918275 LP |
810 | Job *manager_get_job(Manager *m, uint32_t id) { |
811 | assert(m); | |
812 | ||
813 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
814 | } | |
815 | ||
87f0e418 | 816 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
817 | assert(m); |
818 | assert(name); | |
819 | ||
87f0e418 | 820 | return hashmap_get(m->units, name); |
60918275 LP |
821 | } |
822 | ||
c1e1601e | 823 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 824 | Unit *u; |
c1e1601e | 825 | unsigned n = 0; |
60918275 LP |
826 | |
827 | assert(m); | |
828 | ||
223dabab LP |
829 | /* Make sure we are not run recursively */ |
830 | if (m->dispatching_load_queue) | |
c1e1601e | 831 | return 0; |
223dabab LP |
832 | |
833 | m->dispatching_load_queue = true; | |
834 | ||
87f0e418 | 835 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
836 | * tries to load its data until the queue is empty */ |
837 | ||
595ed347 MS |
838 | while ((u = m->load_queue)) { |
839 | assert(u->in_load_queue); | |
034c6ed7 | 840 | |
595ed347 | 841 | unit_load(u); |
c1e1601e | 842 | n++; |
60918275 LP |
843 | } |
844 | ||
223dabab | 845 | m->dispatching_load_queue = false; |
c1e1601e | 846 | return n; |
60918275 LP |
847 | } |
848 | ||
398ef8ba | 849 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 850 | Unit *ret; |
7d17cfbc | 851 | UnitType t; |
60918275 LP |
852 | int r; |
853 | ||
854 | assert(m); | |
9e2f7c11 | 855 | assert(name || path); |
60918275 | 856 | |
db06e3b6 LP |
857 | /* This will prepare the unit for loading, but not actually |
858 | * load anything from disk. */ | |
0301abf4 | 859 | |
398ef8ba LP |
860 | if (path && !is_path(path)) { |
861 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 862 | return -EINVAL; |
398ef8ba | 863 | } |
9e2f7c11 LP |
864 | |
865 | if (!name) | |
9eb977db | 866 | name = path_get_file_name(path); |
9e2f7c11 | 867 | |
7d17cfbc MS |
868 | t = unit_name_to_type(name); |
869 | ||
5f739699 | 870 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) { |
398ef8ba | 871 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 872 | return -EINVAL; |
398ef8ba | 873 | } |
60918275 | 874 | |
7d17cfbc MS |
875 | ret = manager_get_unit(m, name); |
876 | if (ret) { | |
034c6ed7 | 877 | *_ret = ret; |
413d6313 | 878 | return 1; |
034c6ed7 | 879 | } |
60918275 | 880 | |
7d17cfbc MS |
881 | ret = unit_new(m, unit_vtable[t]->object_size); |
882 | if (!ret) | |
60918275 LP |
883 | return -ENOMEM; |
884 | ||
7d17cfbc | 885 | if (path) { |
ac155bb8 MS |
886 | ret->fragment_path = strdup(path); |
887 | if (!ret->fragment_path) { | |
0301abf4 LP |
888 | unit_free(ret); |
889 | return -ENOMEM; | |
890 | } | |
7d17cfbc | 891 | } |
0301abf4 | 892 | |
87f0e418 LP |
893 | if ((r = unit_add_name(ret, name)) < 0) { |
894 | unit_free(ret); | |
1ffba6fe | 895 | return r; |
60918275 LP |
896 | } |
897 | ||
87f0e418 | 898 | unit_add_to_load_queue(ret); |
c1e1601e | 899 | unit_add_to_dbus_queue(ret); |
949061f0 | 900 | unit_add_to_gc_queue(ret); |
c1e1601e | 901 | |
db06e3b6 LP |
902 | if (_ret) |
903 | *_ret = ret; | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
398ef8ba | 908 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
909 | int r; |
910 | ||
911 | assert(m); | |
912 | ||
913 | /* This will load the service information files, but not actually | |
914 | * start any services or anything. */ | |
915 | ||
c3090674 LP |
916 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
917 | if (r != 0) | |
db06e3b6 LP |
918 | return r; |
919 | ||
f50e0a01 | 920 | manager_dispatch_load_queue(m); |
60918275 | 921 | |
9e2f7c11 | 922 | if (_ret) |
413d6313 | 923 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 924 | |
60918275 LP |
925 | return 0; |
926 | } | |
a66d02c3 | 927 | |
cea8e32e | 928 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 929 | Iterator i; |
a66d02c3 LP |
930 | Job *j; |
931 | ||
932 | assert(s); | |
933 | assert(f); | |
934 | ||
034c6ed7 | 935 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 936 | job_dump(j, f, prefix); |
a66d02c3 LP |
937 | } |
938 | ||
87f0e418 | 939 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 940 | Iterator i; |
87f0e418 | 941 | Unit *u; |
11dd41ce | 942 | const char *t; |
a66d02c3 LP |
943 | |
944 | assert(s); | |
945 | assert(f); | |
946 | ||
87f0e418 | 947 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 948 | if (u->id == t) |
87f0e418 | 949 | unit_dump(u, f, prefix); |
a66d02c3 | 950 | } |
7fad411c LP |
951 | |
952 | void manager_clear_jobs(Manager *m) { | |
953 | Job *j; | |
954 | ||
955 | assert(m); | |
956 | ||
7fad411c | 957 | while ((j = hashmap_first(m->jobs))) |
5273510e MS |
958 | /* No need to recurse. We're cancelling all jobs. */ |
959 | job_finish_and_invalidate(j, JOB_CANCELED, false); | |
7fad411c | 960 | } |
83c60c9f | 961 | |
c1e1601e | 962 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 963 | Job *j; |
c1e1601e | 964 | unsigned n = 0; |
83c60c9f | 965 | |
034c6ed7 | 966 | if (m->dispatching_run_queue) |
c1e1601e | 967 | return 0; |
034c6ed7 LP |
968 | |
969 | m->dispatching_run_queue = true; | |
9152c765 | 970 | |
034c6ed7 | 971 | while ((j = m->run_queue)) { |
ac1135be | 972 | assert(j->installed); |
034c6ed7 LP |
973 | assert(j->in_run_queue); |
974 | ||
975 | job_run_and_invalidate(j); | |
c1e1601e | 976 | n++; |
9152c765 | 977 | } |
034c6ed7 LP |
978 | |
979 | m->dispatching_run_queue = false; | |
c1e1601e LP |
980 | return n; |
981 | } | |
982 | ||
983 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
984 | Job *j; | |
595ed347 | 985 | Unit *u; |
c1e1601e LP |
986 | unsigned n = 0; |
987 | ||
988 | assert(m); | |
989 | ||
990 | if (m->dispatching_dbus_queue) | |
991 | return 0; | |
992 | ||
993 | m->dispatching_dbus_queue = true; | |
994 | ||
595ed347 MS |
995 | while ((u = m->dbus_unit_queue)) { |
996 | assert(u->in_dbus_queue); | |
c1e1601e | 997 | |
595ed347 | 998 | bus_unit_send_change_signal(u); |
c1e1601e LP |
999 | n++; |
1000 | } | |
1001 | ||
1002 | while ((j = m->dbus_job_queue)) { | |
1003 | assert(j->in_dbus_queue); | |
1004 | ||
1005 | bus_job_send_change_signal(j); | |
1006 | n++; | |
1007 | } | |
1008 | ||
1009 | m->dispatching_dbus_queue = false; | |
1010 | return n; | |
9152c765 LP |
1011 | } |
1012 | ||
8c47c732 LP |
1013 | static int manager_process_notify_fd(Manager *m) { |
1014 | ssize_t n; | |
1015 | ||
1016 | assert(m); | |
1017 | ||
1018 | for (;;) { | |
1019 | char buf[4096]; | |
1020 | struct msghdr msghdr; | |
1021 | struct iovec iovec; | |
1022 | struct ucred *ucred; | |
1023 | union { | |
1024 | struct cmsghdr cmsghdr; | |
1025 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
1026 | } control; | |
1027 | Unit *u; | |
1028 | char **tags; | |
1029 | ||
1030 | zero(iovec); | |
1031 | iovec.iov_base = buf; | |
1032 | iovec.iov_len = sizeof(buf)-1; | |
1033 | ||
1034 | zero(control); | |
1035 | zero(msghdr); | |
1036 | msghdr.msg_iov = &iovec; | |
1037 | msghdr.msg_iovlen = 1; | |
1038 | msghdr.msg_control = &control; | |
1039 | msghdr.msg_controllen = sizeof(control); | |
1040 | ||
bd0af849 ZJS |
1041 | n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT); |
1042 | if (n <= 0) { | |
8c47c732 LP |
1043 | if (n >= 0) |
1044 | return -EIO; | |
1045 | ||
f6144808 | 1046 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
1047 | break; |
1048 | ||
1049 | return -errno; | |
1050 | } | |
1051 | ||
1052 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
1053 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
1054 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
1055 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
1056 | log_warning("Received notify message without credentials. Ignoring."); | |
1057 | continue; | |
1058 | } | |
1059 | ||
1060 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
1061 | ||
bd0af849 ZJS |
1062 | u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)); |
1063 | if (!u) { | |
1064 | u = cgroup_unit_by_pid(m, ucred->pid); | |
1065 | if (!u) { | |
8c47c732 LP |
1066 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); |
1067 | continue; | |
1068 | } | |
bd0af849 | 1069 | } |
8c47c732 | 1070 | |
8c40acf7 LP |
1071 | assert((size_t) n < sizeof(buf)); |
1072 | buf[n] = 0; | |
bd0af849 ZJS |
1073 | tags = strv_split(buf, "\n\r"); |
1074 | if (!tags) | |
1075 | return log_oom(); | |
8c47c732 | 1076 | |
66870f90 | 1077 | log_debug_unit(u->id, "Got notification message for unit %s", u->id); |
8c47c732 LP |
1078 | |
1079 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1080 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1081 | |
1082 | strv_free(tags); | |
1083 | } | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
034c6ed7 | 1088 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1089 | assert(m); |
1090 | ||
1091 | for (;;) { | |
1092 | siginfo_t si; | |
87f0e418 | 1093 | Unit *u; |
8c47c732 | 1094 | int r; |
9152c765 LP |
1095 | |
1096 | zero(si); | |
4112df16 LP |
1097 | |
1098 | /* First we call waitd() for a PID and do not reap the | |
1099 | * zombie. That way we can still access /proc/$PID for | |
1100 | * it while it is a zombie. */ | |
1101 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1102 | |
1103 | if (errno == ECHILD) | |
1104 | break; | |
1105 | ||
4112df16 LP |
1106 | if (errno == EINTR) |
1107 | continue; | |
1108 | ||
9152c765 | 1109 | return -errno; |
acbb0225 | 1110 | } |
9152c765 | 1111 | |
4112df16 | 1112 | if (si.si_pid <= 0) |
9152c765 LP |
1113 | break; |
1114 | ||
15d5d9d9 | 1115 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
bd0af849 | 1116 | char _cleanup_free_ *name = NULL; |
4112df16 | 1117 | |
87d2c1ff | 1118 | get_process_comm(si.si_pid, &name); |
bb00e604 | 1119 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
1120 | } |
1121 | ||
8c47c732 LP |
1122 | /* Let's flush any message the dying child might still |
1123 | * have queued for us. This ensures that the process | |
1124 | * still exists in /proc so that we can figure out | |
1125 | * which cgroup and hence unit it belongs to. */ | |
bd0af849 ZJS |
1126 | r = manager_process_notify_fd(m); |
1127 | if (r < 0) | |
8c47c732 LP |
1128 | return r; |
1129 | ||
1130 | /* And now figure out the unit this belongs to */ | |
bd0af849 ZJS |
1131 | u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
1132 | if (!u) | |
8c47c732 LP |
1133 | u = cgroup_unit_by_pid(m, si.si_pid); |
1134 | ||
4112df16 LP |
1135 | /* And now, we actually reap the zombie. */ |
1136 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1137 | if (errno == EINTR) | |
1138 | continue; | |
1139 | ||
1140 | return -errno; | |
1141 | } | |
1142 | ||
034c6ed7 LP |
1143 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
1144 | continue; | |
1145 | ||
bb00e604 LP |
1146 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
1147 | (long unsigned) si.si_pid, | |
4112df16 LP |
1148 | sigchld_code_to_string(si.si_code), |
1149 | si.si_status, | |
d06dacd0 LP |
1150 | strna(si.si_code == CLD_EXITED |
1151 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1152 | : signal_to_string(si.si_status))); | |
acbb0225 | 1153 | |
8c47c732 | 1154 | if (!u) |
9152c765 LP |
1155 | continue; |
1156 | ||
66870f90 ZJS |
1157 | log_debug_unit(u->id, |
1158 | "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id); | |
6c1a0478 | 1159 | |
c6c18be3 | 1160 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 1161 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
1162 | } |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
7d793605 | 1167 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 1168 | int r; |
398ef8ba LP |
1169 | DBusError error; |
1170 | ||
1171 | dbus_error_init(&error); | |
1172 | ||
66870f90 | 1173 | log_debug_unit(name, "Activating special unit %s", name); |
1e001f52 | 1174 | |
bd0af849 ZJS |
1175 | r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL); |
1176 | if (r < 0) | |
66870f90 ZJS |
1177 | log_error_unit(name, |
1178 | "Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 1179 | |
398ef8ba | 1180 | dbus_error_free(&error); |
a1b256b0 LP |
1181 | |
1182 | return r; | |
28247076 LP |
1183 | } |
1184 | ||
a16e1123 | 1185 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
1186 | ssize_t n; |
1187 | struct signalfd_siginfo sfsi; | |
1188 | bool sigchld = false; | |
1189 | ||
1190 | assert(m); | |
1191 | ||
1192 | for (;;) { | |
57cb4adf LP |
1193 | n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi)); |
1194 | if (n != sizeof(sfsi)) { | |
9152c765 LP |
1195 | |
1196 | if (n >= 0) | |
1197 | return -EIO; | |
1198 | ||
63090775 | 1199 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 1200 | break; |
9152c765 LP |
1201 | |
1202 | return -errno; | |
1203 | } | |
1204 | ||
67370238 LP |
1205 | if (sfsi.ssi_pid > 0) { |
1206 | char *p = NULL; | |
1207 | ||
87d2c1ff | 1208 | get_process_comm(sfsi.ssi_pid, &p); |
dfa7f7e1 | 1209 | |
67370238 | 1210 | log_debug("Received SIG%s from PID %lu (%s).", |
4e240ab0 | 1211 | signal_to_string(sfsi.ssi_signo), |
67370238 LP |
1212 | (unsigned long) sfsi.ssi_pid, strna(p)); |
1213 | free(p); | |
1214 | } else | |
4e240ab0 | 1215 | log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo)); |
1e001f52 | 1216 | |
b9cd2ec1 LP |
1217 | switch (sfsi.ssi_signo) { |
1218 | ||
4112df16 | 1219 | case SIGCHLD: |
9152c765 | 1220 | sigchld = true; |
b9cd2ec1 LP |
1221 | break; |
1222 | ||
6632c602 | 1223 | case SIGTERM: |
67445f4e | 1224 | if (m->running_as == SYSTEMD_SYSTEM) { |
db06e3b6 LP |
1225 | /* This is for compatibility with the |
1226 | * original sysvinit */ | |
e11dc4a2 | 1227 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1228 | break; |
1229 | } | |
84e9af1e | 1230 | |
a1b256b0 | 1231 | /* Fall through */ |
e11dc4a2 LP |
1232 | |
1233 | case SIGINT: | |
67445f4e | 1234 | if (m->running_as == SYSTEMD_SYSTEM) { |
7d793605 | 1235 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
1236 | break; |
1237 | } | |
1238 | ||
a1b256b0 | 1239 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1240 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1241 | m->exit_code = MANAGER_EXIT; |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | break; | |
84e9af1e | 1246 | |
28247076 | 1247 | case SIGWINCH: |
67445f4e | 1248 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1249 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1250 | |
28247076 LP |
1251 | /* This is a nop on non-init */ |
1252 | break; | |
84e9af1e | 1253 | |
28247076 | 1254 | case SIGPWR: |
67445f4e | 1255 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1256 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1257 | |
28247076 | 1258 | /* This is a nop on non-init */ |
84e9af1e | 1259 | break; |
6632c602 | 1260 | |
1005d14f | 1261 | case SIGUSR1: { |
57ee42ce LP |
1262 | Unit *u; |
1263 | ||
1264 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1265 | ||
1266 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
1267 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 1268 | bus_init(m, true); |
57ee42ce LP |
1269 | } |
1270 | ||
1271 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
1272 | log_info("Loading D-Bus service..."); | |
7d793605 | 1273 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
1274 | } |
1275 | ||
1276 | break; | |
1277 | } | |
1278 | ||
2149e37c LP |
1279 | case SIGUSR2: { |
1280 | FILE *f; | |
1281 | char *dump = NULL; | |
1282 | size_t size; | |
1283 | ||
1284 | if (!(f = open_memstream(&dump, &size))) { | |
1285 | log_warning("Failed to allocate memory stream."); | |
1286 | break; | |
1287 | } | |
1288 | ||
1289 | manager_dump_units(m, f, "\t"); | |
1290 | manager_dump_jobs(m, f, "\t"); | |
1291 | ||
1292 | if (ferror(f)) { | |
1293 | fclose(f); | |
1294 | free(dump); | |
1295 | log_warning("Failed to write status stream"); | |
1296 | break; | |
1297 | } | |
1298 | ||
1299 | fclose(f); | |
1300 | log_dump(LOG_INFO, dump); | |
1301 | free(dump); | |
1302 | ||
1005d14f | 1303 | break; |
2149e37c | 1304 | } |
1005d14f | 1305 | |
a16e1123 LP |
1306 | case SIGHUP: |
1307 | m->exit_code = MANAGER_RELOAD; | |
1308 | break; | |
1309 | ||
7d793605 | 1310 | default: { |
253ee27a | 1311 | |
0003d1ab LP |
1312 | /* Starting SIGRTMIN+0 */ |
1313 | static const char * const target_table[] = { | |
7d793605 LP |
1314 | [0] = SPECIAL_DEFAULT_TARGET, |
1315 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 1316 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
1317 | [3] = SPECIAL_HALT_TARGET, |
1318 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
1319 | [5] = SPECIAL_REBOOT_TARGET, |
1320 | [6] = SPECIAL_KEXEC_TARGET | |
1321 | }; | |
1322 | ||
1323 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
1324 | static const ManagerExitCode code_table[] = { | |
1325 | [0] = MANAGER_HALT, | |
1326 | [1] = MANAGER_POWEROFF, | |
1327 | [2] = MANAGER_REBOOT, | |
1328 | [3] = MANAGER_KEXEC | |
7d793605 LP |
1329 | }; |
1330 | ||
1331 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 1332 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
1333 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
1334 | manager_start_target(m, target_table[idx], | |
1335 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
1336 | break; |
1337 | } | |
1338 | ||
0003d1ab LP |
1339 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
1340 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
1341 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
1342 | break; | |
1343 | } | |
1344 | ||
0658666b LP |
1345 | switch (sfsi.ssi_signo - SIGRTMIN) { |
1346 | ||
1347 | case 20: | |
1348 | log_debug("Enabling showing of status."); | |
27d340c7 | 1349 | manager_set_show_status(m, true); |
0658666b LP |
1350 | break; |
1351 | ||
1352 | case 21: | |
1353 | log_debug("Disabling showing of status."); | |
27d340c7 | 1354 | manager_set_show_status(m, false); |
0658666b LP |
1355 | break; |
1356 | ||
253ee27a LP |
1357 | case 22: |
1358 | log_set_max_level(LOG_DEBUG); | |
1359 | log_notice("Setting log level to debug."); | |
1360 | break; | |
1361 | ||
1362 | case 23: | |
1363 | log_set_max_level(LOG_INFO); | |
1364 | log_notice("Setting log level to info."); | |
1365 | break; | |
1366 | ||
600b704e LP |
1367 | case 24: |
1368 | if (m->running_as == SYSTEMD_USER) { | |
1369 | m->exit_code = MANAGER_EXIT; | |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | /* This is a nop on init */ | |
1374 | break; | |
1375 | ||
4cfa2c99 LP |
1376 | case 26: |
1377 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1378 | log_notice("Setting log target to journal-or-kmsg."); | |
1379 | break; | |
1380 | ||
253ee27a LP |
1381 | case 27: |
1382 | log_set_target(LOG_TARGET_CONSOLE); | |
1383 | log_notice("Setting log target to console."); | |
1384 | break; | |
1385 | ||
1386 | case 28: | |
1387 | log_set_target(LOG_TARGET_KMSG); | |
1388 | log_notice("Setting log target to kmsg."); | |
1389 | break; | |
1390 | ||
1391 | case 29: | |
1392 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); | |
1393 | log_notice("Setting log target to syslog-or-kmsg."); | |
1394 | break; | |
1395 | ||
0658666b | 1396 | default: |
4e240ab0 | 1397 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 1398 | } |
b9cd2ec1 | 1399 | } |
7d793605 | 1400 | } |
9152c765 LP |
1401 | } |
1402 | ||
1403 | if (sigchld) | |
034c6ed7 LP |
1404 | return manager_dispatch_sigchld(m); |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
a16e1123 | 1409 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 1410 | int r; |
acbb0225 | 1411 | Watch *w; |
034c6ed7 LP |
1412 | |
1413 | assert(m); | |
1414 | assert(ev); | |
1415 | ||
3df5bf61 | 1416 | assert_se(w = ev->data.ptr); |
034c6ed7 | 1417 | |
40dde66f LP |
1418 | if (w->type == WATCH_INVALID) |
1419 | return 0; | |
1420 | ||
acbb0225 | 1421 | switch (w->type) { |
034c6ed7 | 1422 | |
ef734fd6 | 1423 | case WATCH_SIGNAL: |
034c6ed7 | 1424 | |
acbb0225 | 1425 | /* An incoming signal? */ |
f94ea366 | 1426 | if (ev->events != EPOLLIN) |
acbb0225 | 1427 | return -EINVAL; |
034c6ed7 | 1428 | |
a16e1123 | 1429 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 1430 | return r; |
034c6ed7 | 1431 | |
acbb0225 | 1432 | break; |
034c6ed7 | 1433 | |
8c47c732 LP |
1434 | case WATCH_NOTIFY: |
1435 | ||
1436 | /* An incoming daemon notification event? */ | |
1437 | if (ev->events != EPOLLIN) | |
1438 | return -EINVAL; | |
1439 | ||
1440 | if ((r = manager_process_notify_fd(m)) < 0) | |
1441 | return r; | |
1442 | ||
1443 | break; | |
1444 | ||
acbb0225 | 1445 | case WATCH_FD: |
034c6ed7 | 1446 | |
acbb0225 | 1447 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 1448 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 1449 | break; |
034c6ed7 | 1450 | |
faf919f1 LP |
1451 | case WATCH_UNIT_TIMER: |
1452 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
1453 | uint64_t v; |
1454 | ssize_t k; | |
034c6ed7 | 1455 | |
acbb0225 | 1456 | /* Some timer event, to be dispatched to the units */ |
68b29a9f LP |
1457 | k = read(w->fd, &v, sizeof(v)); |
1458 | if (k != sizeof(v)) { | |
034c6ed7 | 1459 | |
acbb0225 LP |
1460 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
1461 | break; | |
034c6ed7 | 1462 | |
8742514c | 1463 | log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read"); |
acbb0225 | 1464 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
1465 | } |
1466 | ||
faf919f1 LP |
1467 | if (w->type == WATCH_UNIT_TIMER) |
1468 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
1469 | else | |
1470 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
1471 | break; |
1472 | } | |
1473 | ||
ef734fd6 LP |
1474 | case WATCH_MOUNT: |
1475 | /* Some mount table change, intended for the mount subsystem */ | |
1476 | mount_fd_event(m, ev->events); | |
1477 | break; | |
1478 | ||
4e434314 LP |
1479 | case WATCH_SWAP: |
1480 | /* Some swap table change, intended for the swap subsystem */ | |
1481 | swap_fd_event(m, ev->events); | |
1482 | break; | |
1483 | ||
f94ea366 LP |
1484 | case WATCH_UDEV: |
1485 | /* Some notification from udev, intended for the device subsystem */ | |
1486 | device_fd_event(m, ev->events); | |
1487 | break; | |
1488 | ||
ea430986 LP |
1489 | case WATCH_DBUS_WATCH: |
1490 | bus_watch_event(m, w, ev->events); | |
1491 | break; | |
1492 | ||
1493 | case WATCH_DBUS_TIMEOUT: | |
1494 | bus_timeout_event(m, w, ev->events); | |
1495 | break; | |
1496 | ||
8742514c LP |
1497 | case WATCH_TIME_CHANGE: { |
1498 | Unit *u; | |
1499 | Iterator i; | |
1500 | ||
1501 | log_struct(LOG_INFO, | |
1502 | MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
1503 | "MESSAGE=Time has been changed", | |
1504 | NULL); | |
1505 | ||
1506 | /* Restart the watch */ | |
1507 | close_nointr_nofail(m->time_change_watch.fd); | |
1508 | watch_init(&m->time_change_watch); | |
1509 | manager_setup_time_change(m); | |
1510 | ||
1511 | HASHMAP_FOREACH(u, m->units, i) { | |
1512 | if (UNIT_VTABLE(u)->time_change) | |
1513 | UNIT_VTABLE(u)->time_change(u); | |
1514 | } | |
1515 | ||
1516 | break; | |
1517 | } | |
1518 | ||
acbb0225 | 1519 | default: |
c5fd1e57 | 1520 | log_error("event type=%i", w->type); |
acbb0225 | 1521 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 1522 | } |
9152c765 LP |
1523 | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | int manager_loop(Manager *m) { | |
1528 | int r; | |
9152c765 | 1529 | |
fac9f8df | 1530 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 1531 | |
9152c765 | 1532 | assert(m); |
a16e1123 | 1533 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 1534 | |
fe51822e LP |
1535 | /* Release the path cache */ |
1536 | set_free_free(m->unit_path_cache); | |
1537 | m->unit_path_cache = NULL; | |
1538 | ||
b0c918b9 LP |
1539 | manager_check_finished(m); |
1540 | ||
a4312405 LP |
1541 | /* There might still be some zombies hanging around from |
1542 | * before we were exec()'ed. Leat's reap them */ | |
e96d6be7 LP |
1543 | r = manager_dispatch_sigchld(m); |
1544 | if (r < 0) | |
a4312405 LP |
1545 | return r; |
1546 | ||
a16e1123 | 1547 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
1548 | struct epoll_event event; |
1549 | int n; | |
c757a65b | 1550 | int wait_msec = -1; |
9152c765 | 1551 | |
67445f4e | 1552 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) |
e96d6be7 LP |
1553 | watchdog_ping(); |
1554 | ||
ea430986 LP |
1555 | if (!ratelimit_test(&rl)) { |
1556 | /* Yay, something is going seriously wrong, pause a little */ | |
1557 | log_warning("Looping too fast. Throttling execution a little."); | |
1558 | sleep(1); | |
e96d6be7 | 1559 | continue; |
ea430986 LP |
1560 | } |
1561 | ||
37a8e683 | 1562 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
1563 | continue; |
1564 | ||
37a8e683 | 1565 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
1566 | continue; |
1567 | ||
37a8e683 | 1568 | if (bus_dispatch(m) > 0) |
c1e1601e | 1569 | continue; |
034c6ed7 | 1570 | |
37a8e683 | 1571 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
1572 | continue; |
1573 | ||
37a8e683 | 1574 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
1575 | continue; |
1576 | ||
1577 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 1578 | continue; |
ea430986 | 1579 | |
e04aad61 LP |
1580 | if (swap_dispatch_reload(m) > 0) |
1581 | continue; | |
1582 | ||
c757a65b | 1583 | /* Sleep for half the watchdog time */ |
67445f4e | 1584 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) { |
c757a65b LP |
1585 | wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC); |
1586 | if (wait_msec <= 0) | |
1587 | wait_msec = 1; | |
1588 | } else | |
1589 | wait_msec = -1; | |
1590 | ||
e96d6be7 LP |
1591 | n = epoll_wait(m->epoll_fd, &event, 1, wait_msec); |
1592 | if (n < 0) { | |
9152c765 | 1593 | |
6089f4a9 | 1594 | if (errno == EINTR) |
9152c765 LP |
1595 | continue; |
1596 | ||
1597 | return -errno; | |
e96d6be7 LP |
1598 | } else if (n == 0) |
1599 | continue; | |
9152c765 | 1600 | |
957ca890 | 1601 | assert(n == 1); |
b9cd2ec1 | 1602 | |
e96d6be7 LP |
1603 | r = process_event(m, &event); |
1604 | if (r < 0) | |
957ca890 | 1605 | return r; |
a16e1123 | 1606 | } |
957ca890 | 1607 | |
a16e1123 | 1608 | return m->exit_code; |
83c60c9f | 1609 | } |
ea430986 | 1610 | |
80fbf05e | 1611 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { |
ea430986 LP |
1612 | char *n; |
1613 | Unit *u; | |
80fbf05e | 1614 | int r; |
ea430986 LP |
1615 | |
1616 | assert(m); | |
1617 | assert(s); | |
1618 | assert(_u); | |
1619 | ||
1620 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
1621 | return -EINVAL; | |
1622 | ||
80fbf05e MS |
1623 | n = bus_path_unescape(s+31); |
1624 | if (!n) | |
ea430986 LP |
1625 | return -ENOMEM; |
1626 | ||
80fbf05e | 1627 | r = manager_load_unit(m, n, NULL, e, &u); |
ea430986 LP |
1628 | free(n); |
1629 | ||
80fbf05e MS |
1630 | if (r < 0) |
1631 | return r; | |
ea430986 LP |
1632 | |
1633 | *_u = u; | |
1634 | ||
1635 | return 0; | |
1636 | } | |
86fbf370 LP |
1637 | |
1638 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
1639 | Job *j; | |
1640 | unsigned id; | |
1641 | int r; | |
1642 | ||
1643 | assert(m); | |
1644 | assert(s); | |
1645 | assert(_j); | |
1646 | ||
1647 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
1648 | return -EINVAL; | |
1649 | ||
8742514c LP |
1650 | r = safe_atou(s + 30, &id); |
1651 | if (r < 0) | |
86fbf370 LP |
1652 | return r; |
1653 | ||
8742514c LP |
1654 | j = manager_get_job(m, id); |
1655 | if (!j) | |
86fbf370 LP |
1656 | return -ENOENT; |
1657 | ||
1658 | *_j = j; | |
1659 | ||
1660 | return 0; | |
1661 | } | |
dfcd764e | 1662 | |
4927fcae | 1663 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 1664 | |
4927fcae LP |
1665 | #ifdef HAVE_AUDIT |
1666 | char *p; | |
c1165f82 | 1667 | int audit_fd; |
e537352b | 1668 | |
c1165f82 LP |
1669 | audit_fd = get_audit_fd(); |
1670 | if (audit_fd < 0) | |
e537352b LP |
1671 | return; |
1672 | ||
bbd3a7ba LP |
1673 | /* Don't generate audit events if the service was already |
1674 | * started and we're just deserializing */ | |
a7556052 | 1675 | if (m->n_reloading > 0) |
bbd3a7ba LP |
1676 | return; |
1677 | ||
67445f4e | 1678 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
1679 | return; |
1680 | ||
ac155bb8 | 1681 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
1682 | return; |
1683 | ||
bd0af849 ZJS |
1684 | p = unit_name_to_prefix_and_instance(u->id); |
1685 | if (!p) { | |
66870f90 ZJS |
1686 | log_error_unit(u->id, |
1687 | "Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); | |
e537352b LP |
1688 | return; |
1689 | } | |
1690 | ||
c1165f82 | 1691 | if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
391ade86 LP |
1692 | if (errno == EPERM) { |
1693 | /* We aren't allowed to send audit messages? | |
44785992 | 1694 | * Then let's not retry again. */ |
c1165f82 | 1695 | close_audit_fd(); |
44785992 LP |
1696 | } else |
1697 | log_warning("Failed to send audit message: %m"); | |
391ade86 | 1698 | } |
e537352b | 1699 | |
4927fcae LP |
1700 | free(p); |
1701 | #endif | |
e537352b | 1702 | |
e537352b LP |
1703 | } |
1704 | ||
e983b760 LP |
1705 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
1706 | int fd = -1; | |
1707 | union sockaddr_union sa; | |
1708 | int n = 0; | |
1709 | char *message = NULL; | |
e983b760 LP |
1710 | |
1711 | /* Don't generate plymouth events if the service was already | |
1712 | * started and we're just deserializing */ | |
a7556052 | 1713 | if (m->n_reloading > 0) |
e983b760 LP |
1714 | return; |
1715 | ||
67445f4e | 1716 | if (m->running_as != SYSTEMD_SYSTEM) |
e983b760 LP |
1717 | return; |
1718 | ||
ac155bb8 MS |
1719 | if (u->type != UNIT_SERVICE && |
1720 | u->type != UNIT_MOUNT && | |
1721 | u->type != UNIT_SWAP) | |
e983b760 LP |
1722 | return; |
1723 | ||
1724 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
1725 | * message then wait for plymouth */ | |
1726 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
1727 | log_error("socket() failed: %m"); | |
1728 | return; | |
1729 | } | |
1730 | ||
1731 | zero(sa); | |
1732 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
1733 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
1734 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
1735 | |
1736 | if (errno != EPIPE && | |
1737 | errno != EAGAIN && | |
1738 | errno != ENOENT && | |
1739 | errno != ECONNREFUSED && | |
1740 | errno != ECONNRESET && | |
1741 | errno != ECONNABORTED) | |
1742 | log_error("connect() failed: %m"); | |
1743 | ||
1744 | goto finish; | |
1745 | } | |
1746 | ||
ac155bb8 | 1747 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 1748 | log_oom(); |
e983b760 LP |
1749 | goto finish; |
1750 | } | |
1751 | ||
1752 | errno = 0; | |
bd40a2d8 | 1753 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
1754 | |
1755 | if (errno != EPIPE && | |
1756 | errno != EAGAIN && | |
1757 | errno != ENOENT && | |
1758 | errno != ECONNREFUSED && | |
1759 | errno != ECONNRESET && | |
1760 | errno != ECONNABORTED) | |
1761 | log_error("Failed to write Plymouth message: %m"); | |
1762 | ||
1763 | goto finish; | |
1764 | } | |
1765 | ||
1766 | finish: | |
1767 | if (fd >= 0) | |
1768 | close_nointr_nofail(fd); | |
1769 | ||
1770 | free(message); | |
1771 | } | |
1772 | ||
05e343b7 LP |
1773 | void manager_dispatch_bus_name_owner_changed( |
1774 | Manager *m, | |
1775 | const char *name, | |
1776 | const char* old_owner, | |
1777 | const char *new_owner) { | |
1778 | ||
1779 | Unit *u; | |
1780 | ||
1781 | assert(m); | |
1782 | assert(name); | |
1783 | ||
1784 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1785 | return; | |
1786 | ||
1787 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
1788 | } | |
1789 | ||
1790 | void manager_dispatch_bus_query_pid_done( | |
1791 | Manager *m, | |
1792 | const char *name, | |
1793 | pid_t pid) { | |
1794 | ||
1795 | Unit *u; | |
1796 | ||
1797 | assert(m); | |
1798 | assert(name); | |
1799 | assert(pid >= 1); | |
1800 | ||
1801 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1802 | return; | |
1803 | ||
1804 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
1805 | } | |
1806 | ||
d8d5ab98 | 1807 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 1808 | char *path = NULL; |
a16e1123 LP |
1809 | mode_t saved_umask; |
1810 | int fd; | |
1811 | FILE *f; | |
1812 | ||
1813 | assert(_f); | |
1814 | ||
67445f4e | 1815 | if (m->running_as == SYSTEMD_SYSTEM) |
2b583ce6 | 1816 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
1817 | else |
1818 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 1819 | |
b925e726 LP |
1820 | if (!path) |
1821 | return -ENOMEM; | |
a16e1123 LP |
1822 | |
1823 | saved_umask = umask(0077); | |
1824 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
1825 | umask(saved_umask); | |
1826 | ||
1827 | if (fd < 0) { | |
1828 | free(path); | |
1829 | return -errno; | |
1830 | } | |
1831 | ||
1832 | unlink(path); | |
1833 | ||
1834 | log_debug("Serializing state to %s", path); | |
1835 | free(path); | |
1836 | ||
01e10de3 LP |
1837 | f = fdopen(fd, "w+"); |
1838 | if (!f) | |
a16e1123 LP |
1839 | return -errno; |
1840 | ||
1841 | *_f = f; | |
1842 | ||
1843 | return 0; | |
1844 | } | |
1845 | ||
6b78f9b4 | 1846 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
1847 | Iterator i; |
1848 | Unit *u; | |
1849 | const char *t; | |
1850 | int r; | |
1851 | ||
1852 | assert(m); | |
1853 | assert(f); | |
1854 | assert(fds); | |
1855 | ||
a7556052 | 1856 | m->n_reloading ++; |
38c52d46 | 1857 | |
01d67b43 LP |
1858 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
1859 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
33c5fae9 LP |
1860 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
1861 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 1862 | |
915b3753 LP |
1863 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
1864 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); | |
1865 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); | |
e9ddabc2 | 1866 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 1867 | |
26a1efdf | 1868 | if (!in_initrd()) { |
915b3753 | 1869 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 HH |
1870 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
1871 | } | |
47a483a1 | 1872 | |
f2382a94 LP |
1873 | fputc('\n', f); |
1874 | ||
a16e1123 | 1875 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 1876 | if (u->id != t) |
a16e1123 LP |
1877 | continue; |
1878 | ||
1879 | if (!unit_can_serialize(u)) | |
1880 | continue; | |
1881 | ||
1882 | /* Start marker */ | |
ac155bb8 | 1883 | fputs(u->id, f); |
a16e1123 LP |
1884 | fputc('\n', f); |
1885 | ||
6b78f9b4 | 1886 | if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) { |
a7556052 | 1887 | m->n_reloading --; |
a16e1123 | 1888 | return r; |
38c52d46 | 1889 | } |
a16e1123 LP |
1890 | } |
1891 | ||
a7556052 LP |
1892 | assert(m->n_reloading > 0); |
1893 | m->n_reloading --; | |
38c52d46 | 1894 | |
a16e1123 LP |
1895 | if (ferror(f)) |
1896 | return -EIO; | |
1897 | ||
b23de6af LP |
1898 | r = bus_fdset_add_all(m, fds); |
1899 | if (r < 0) | |
1900 | return r; | |
1901 | ||
a16e1123 LP |
1902 | return 0; |
1903 | } | |
1904 | ||
1905 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
1906 | int r = 0; | |
1907 | ||
1908 | assert(m); | |
1909 | assert(f); | |
1910 | ||
1911 | log_debug("Deserializing state..."); | |
1912 | ||
a7556052 | 1913 | m->n_reloading ++; |
82c64bf5 | 1914 | |
10f8e83c | 1915 | for (;;) { |
20c03b7b | 1916 | char line[LINE_MAX], *l; |
10f8e83c LP |
1917 | |
1918 | if (!fgets(line, sizeof(line), f)) { | |
1919 | if (feof(f)) | |
1920 | r = 0; | |
1921 | else | |
1922 | r = -errno; | |
1923 | ||
1924 | goto finish; | |
1925 | } | |
1926 | ||
1927 | char_array_0(line); | |
1928 | l = strstrip(line); | |
1929 | ||
1930 | if (l[0] == 0) | |
1931 | break; | |
1932 | ||
01d67b43 LP |
1933 | if (startswith(l, "current-job-id=")) { |
1934 | uint32_t id; | |
1935 | ||
1936 | if (safe_atou32(l+15, &id) < 0) | |
1937 | log_debug("Failed to parse current job id value %s", l+15); | |
1938 | else | |
1939 | m->current_job_id = MAX(m->current_job_id, id); | |
33c5fae9 LP |
1940 | } else if (startswith(l, "n-installed-jobs=")) { |
1941 | uint32_t n; | |
1942 | ||
1943 | if (safe_atou32(l+17, &n) < 0) | |
1944 | log_debug("Failed to parse installed jobs counter %s", l+17); | |
1945 | else | |
1946 | m->n_installed_jobs += n; | |
1947 | } else if (startswith(l, "n-failed-jobs=")) { | |
1948 | uint32_t n; | |
1949 | ||
1950 | if (safe_atou32(l+14, &n) < 0) | |
1951 | log_debug("Failed to parse failed jobs counter %s", l+14); | |
1952 | else | |
1953 | m->n_failed_jobs += n; | |
01d67b43 LP |
1954 | } else if (startswith(l, "taint-usr=")) { |
1955 | int b; | |
1956 | ||
1957 | if ((b = parse_boolean(l+10)) < 0) | |
1958 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
1959 | else | |
1960 | m->taint_usr = m->taint_usr || b; | |
915b3753 LP |
1961 | } else if (startswith(l, "firmware-timestamp=")) |
1962 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
1963 | else if (startswith(l, "loader-timestamp=")) | |
1964 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
1965 | else if (startswith(l, "kernel-timestamp=")) | |
1966 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
1967 | else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 | 1968 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
915b3753 LP |
1969 | else if (startswith(l, "userspace-timestamp=")) |
1970 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
10717a1a | 1971 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 1972 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
10717a1a | 1973 | else |
10f8e83c LP |
1974 | log_debug("Unknown serialization item '%s'", l); |
1975 | } | |
1976 | ||
a16e1123 LP |
1977 | for (;;) { |
1978 | Unit *u; | |
1979 | char name[UNIT_NAME_MAX+2]; | |
1980 | ||
1981 | /* Start marker */ | |
1982 | if (!fgets(name, sizeof(name), f)) { | |
1983 | if (feof(f)) | |
10f8e83c LP |
1984 | r = 0; |
1985 | else | |
1986 | r = -errno; | |
a16e1123 | 1987 | |
82c64bf5 | 1988 | goto finish; |
a16e1123 LP |
1989 | } |
1990 | ||
1991 | char_array_0(name); | |
1992 | ||
bd0af849 ZJS |
1993 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); |
1994 | if (r < 0) | |
82c64bf5 | 1995 | goto finish; |
a16e1123 | 1996 | |
01e10de3 LP |
1997 | r = unit_deserialize(u, f, fds); |
1998 | if (r < 0) | |
82c64bf5 | 1999 | goto finish; |
a16e1123 LP |
2000 | } |
2001 | ||
10f8e83c | 2002 | finish: |
82c64bf5 LP |
2003 | if (ferror(f)) { |
2004 | r = -EIO; | |
2005 | goto finish; | |
2006 | } | |
a16e1123 | 2007 | |
a7556052 LP |
2008 | assert(m->n_reloading > 0); |
2009 | m->n_reloading --; | |
82c64bf5 LP |
2010 | |
2011 | return r; | |
a16e1123 LP |
2012 | } |
2013 | ||
01e10de3 LP |
2014 | int manager_distribute_fds(Manager *m, FDSet *fds) { |
2015 | Unit *u; | |
2016 | Iterator i; | |
2017 | int r; | |
2018 | ||
2019 | assert(m); | |
2020 | ||
2021 | HASHMAP_FOREACH(u, m->units, i) { | |
2022 | ||
2023 | if (fdset_size(fds) <= 0) | |
2024 | break; | |
2025 | ||
2026 | if (UNIT_VTABLE(u)->distribute_fds) { | |
2027 | r = UNIT_VTABLE(u)->distribute_fds(u, fds); | |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | return 0; | |
2034 | } | |
2035 | ||
a16e1123 LP |
2036 | int manager_reload(Manager *m) { |
2037 | int r, q; | |
2038 | FILE *f; | |
2039 | FDSet *fds; | |
2040 | ||
2041 | assert(m); | |
2042 | ||
07719a21 LP |
2043 | r = manager_open_serialization(m, &f); |
2044 | if (r < 0) | |
a16e1123 LP |
2045 | return r; |
2046 | ||
a7556052 | 2047 | m->n_reloading ++; |
38c52d46 | 2048 | |
07719a21 LP |
2049 | fds = fdset_new(); |
2050 | if (!fds) { | |
a7556052 | 2051 | m->n_reloading --; |
a16e1123 LP |
2052 | r = -ENOMEM; |
2053 | goto finish; | |
2054 | } | |
2055 | ||
6b78f9b4 | 2056 | r = manager_serialize(m, f, fds, true); |
07719a21 | 2057 | if (r < 0) { |
a7556052 | 2058 | m->n_reloading --; |
a16e1123 | 2059 | goto finish; |
38c52d46 | 2060 | } |
a16e1123 LP |
2061 | |
2062 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
a7556052 | 2063 | m->n_reloading --; |
a16e1123 LP |
2064 | r = -errno; |
2065 | goto finish; | |
2066 | } | |
2067 | ||
2068 | /* From here on there is no way back. */ | |
2069 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 2070 | manager_undo_generators(m); |
84e3543e | 2071 | lookup_paths_free(&m->lookup_paths); |
2ded0c04 | 2072 | |
07719a21 | 2073 | /* Find new unit paths */ |
5a1e9937 LP |
2074 | manager_run_generators(m); |
2075 | ||
07719a21 LP |
2076 | q = lookup_paths_init( |
2077 | &m->lookup_paths, m->running_as, true, | |
2078 | m->generator_unit_path, | |
2079 | m->generator_unit_path_early, | |
2080 | m->generator_unit_path_late); | |
2081 | if (q < 0) | |
2082 | r = q; | |
2083 | ||
5a1e9937 LP |
2084 | manager_build_unit_path_cache(m); |
2085 | ||
a16e1123 | 2086 | /* First, enumerate what we can from all config files */ |
07719a21 LP |
2087 | q = manager_enumerate(m); |
2088 | if (q < 0) | |
a16e1123 LP |
2089 | r = q; |
2090 | ||
2091 | /* Second, deserialize our stored data */ | |
07719a21 LP |
2092 | q = manager_deserialize(m, f, fds); |
2093 | if (q < 0) | |
a16e1123 LP |
2094 | r = q; |
2095 | ||
2096 | fclose(f); | |
2097 | f = NULL; | |
2098 | ||
2099 | /* Third, fire things up! */ | |
07719a21 LP |
2100 | q = manager_coldplug(m); |
2101 | if (q < 0) | |
a16e1123 LP |
2102 | r = q; |
2103 | ||
a7556052 LP |
2104 | assert(m->n_reloading > 0); |
2105 | m->n_reloading--; | |
9f611ad8 | 2106 | |
a16e1123 LP |
2107 | finish: |
2108 | if (f) | |
2109 | fclose(f); | |
2110 | ||
2111 | if (fds) | |
2112 | fdset_free(fds); | |
2113 | ||
2114 | return r; | |
2115 | } | |
2116 | ||
9e58ff9c LP |
2117 | bool manager_is_booting_or_shutting_down(Manager *m) { |
2118 | Unit *u; | |
2119 | ||
2120 | assert(m); | |
2121 | ||
2122 | /* Is the initial job still around? */ | |
bacbccb7 | 2123 | if (manager_get_job(m, m->default_unit_job_id)) |
9e58ff9c LP |
2124 | return true; |
2125 | ||
2126 | /* Is there a job for the shutdown target? */ | |
27d340c7 LP |
2127 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
2128 | if (u) | |
ac155bb8 | 2129 | return !!u->job; |
9e58ff9c LP |
2130 | |
2131 | return false; | |
2132 | } | |
2133 | ||
fdf20a31 | 2134 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2135 | Unit *u; |
2136 | Iterator i; | |
2137 | ||
2138 | assert(m); | |
2139 | ||
2140 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2141 | unit_reset_failed(u); |
5632e374 LP |
2142 | } |
2143 | ||
8f6df3fa LP |
2144 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
2145 | Unit *u; | |
2146 | ||
2147 | assert(m); | |
2148 | assert(name); | |
2149 | ||
2150 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2151 | u = manager_get_unit(m, name); |
2152 | if (!u) | |
8f6df3fa LP |
2153 | return true; |
2154 | ||
18ffdfda | 2155 | return unit_pending_inactive(u); |
8f6df3fa LP |
2156 | } |
2157 | ||
b0c918b9 | 2158 | void manager_check_finished(Manager *m) { |
7ceba241 | 2159 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2160 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 LP |
2161 | |
2162 | assert(m); | |
2163 | ||
f2b68789 | 2164 | if (hashmap_size(m->jobs) > 0) |
b0c918b9 LP |
2165 | return; |
2166 | ||
f2b68789 LP |
2167 | /* Notify Type=idle units that we are done now */ |
2168 | close_pipe(m->idle_pipe); | |
2169 | ||
af6da548 LP |
2170 | /* Turn off confirm spawn now */ |
2171 | m->confirm_spawn = false; | |
2172 | ||
f2b68789 | 2173 | if (dual_timestamp_is_set(&m->finish_timestamp)) |
b0c918b9 LP |
2174 | return; |
2175 | ||
2176 | dual_timestamp_get(&m->finish_timestamp); | |
2177 | ||
67445f4e | 2178 | if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) { |
e03ae661 | 2179 | |
915b3753 LP |
2180 | /* Note that m->kernel_usec.monotonic is always at 0, |
2181 | * and m->firmware_usec.monotonic and | |
2182 | * m->loader_usec.monotonic should be considered | |
2183 | * negative values. */ | |
2184 | ||
7ceba241 LP |
2185 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2186 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2187 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2188 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2189 | |
e9ddabc2 | 2190 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2191 | |
915b3753 LP |
2192 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2193 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2194 | |
81270860 LP |
2195 | if (!log_on_console()) |
2196 | log_struct(LOG_INFO, | |
1ca6783f | 2197 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2198 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2199 | "INITRD_USEC=%llu", (unsigned long long) initrd_usec, | |
2200 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2201 | "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", | |
2202 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2203 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2204 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2205 | format_timespan(sum, sizeof(sum), total_usec), | |
2206 | NULL); | |
18fa6b27 | 2207 | } else { |
915b3753 | 2208 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2209 | initrd_usec = 0; |
2210 | ||
81270860 LP |
2211 | if (!log_on_console()) |
2212 | log_struct(LOG_INFO, | |
1ca6783f | 2213 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2214 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2215 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2216 | "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.", | |
2217 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2218 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2219 | format_timespan(sum, sizeof(sum), total_usec), | |
2220 | NULL); | |
18fa6b27 LP |
2221 | } |
2222 | } else { | |
915b3753 LP |
2223 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
2224 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
877d54e9 | 2225 | |
81270860 LP |
2226 | if (!log_on_console()) |
2227 | log_struct(LOG_INFO, | |
1ca6783f | 2228 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2229 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, |
2230 | "MESSAGE=Startup finished in %s.", | |
2231 | format_timespan(sum, sizeof(sum), total_usec), | |
2232 | NULL); | |
18fa6b27 | 2233 | } |
b0c918b9 | 2234 | |
915b3753 | 2235 | bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2236 | |
2237 | sd_notifyf(false, | |
2238 | "READY=1\nSTATUS=Startup finished in %s.", | |
2239 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2240 | } |
2241 | ||
07719a21 LP |
2242 | static int create_generator_dir(Manager *m, char **generator, const char *name) { |
2243 | char *p; | |
2244 | int r; | |
2245 | ||
2246 | assert(m); | |
2247 | assert(generator); | |
2248 | assert(name); | |
2249 | ||
2250 | if (*generator) | |
2251 | return 0; | |
2252 | ||
67445f4e | 2253 | if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) { |
07719a21 LP |
2254 | |
2255 | p = strappend("/run/systemd/", name); | |
0d0f0c50 SL |
2256 | if (!p) |
2257 | return log_oom(); | |
07719a21 | 2258 | |
d2e54fae | 2259 | r = mkdir_p_label(p, 0755); |
07719a21 LP |
2260 | if (r < 0) { |
2261 | log_error("Failed to create generator directory: %s", strerror(-r)); | |
2262 | free(p); | |
2263 | return r; | |
2264 | } | |
2265 | } else { | |
b7def684 | 2266 | p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); |
0d0f0c50 SL |
2267 | if (!p) |
2268 | return log_oom(); | |
07719a21 LP |
2269 | |
2270 | if (!mkdtemp(p)) { | |
2271 | free(p); | |
2272 | log_error("Failed to create generator directory: %m"); | |
2273 | return -errno; | |
2274 | } | |
2275 | } | |
2276 | ||
2277 | *generator = p; | |
2278 | return 0; | |
2279 | } | |
2280 | ||
2281 | static void trim_generator_dir(Manager *m, char **generator) { | |
2282 | assert(m); | |
2283 | assert(generator); | |
2284 | ||
2285 | if (!*generator) | |
2286 | return; | |
2287 | ||
2288 | if (rmdir(*generator) >= 0) { | |
2289 | free(*generator); | |
2290 | *generator = NULL; | |
2291 | } | |
2292 | ||
2293 | return; | |
2294 | } | |
2295 | ||
5a1e9937 LP |
2296 | void manager_run_generators(Manager *m) { |
2297 | DIR *d = NULL; | |
5a1e9937 | 2298 | const char *generator_path; |
07719a21 | 2299 | const char *argv[5]; |
07f8a4aa | 2300 | mode_t u; |
07719a21 | 2301 | int r; |
5a1e9937 LP |
2302 | |
2303 | assert(m); | |
2304 | ||
67445f4e | 2305 | generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
07719a21 LP |
2306 | d = opendir(generator_path); |
2307 | if (!d) { | |
5a1e9937 LP |
2308 | if (errno == ENOENT) |
2309 | return; | |
2310 | ||
2311 | log_error("Failed to enumerate generator directory: %m"); | |
2312 | return; | |
2313 | } | |
2314 | ||
07719a21 LP |
2315 | r = create_generator_dir(m, &m->generator_unit_path, "generator"); |
2316 | if (r < 0) | |
2317 | goto finish; | |
f1d19aa4 | 2318 | |
07719a21 LP |
2319 | r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early"); |
2320 | if (r < 0) | |
2321 | goto finish; | |
5a1e9937 | 2322 | |
07719a21 LP |
2323 | r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late"); |
2324 | if (r < 0) | |
2325 | goto finish; | |
5a1e9937 | 2326 | |
83cc030f LP |
2327 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
2328 | argv[1] = m->generator_unit_path; | |
07719a21 LP |
2329 | argv[2] = m->generator_unit_path_early; |
2330 | argv[3] = m->generator_unit_path_late; | |
2331 | argv[4] = NULL; | |
5a1e9937 | 2332 | |
07f8a4aa | 2333 | u = umask(0022); |
83cc030f | 2334 | execute_directory(generator_path, d, (char**) argv); |
07f8a4aa | 2335 | umask(u); |
5a1e9937 | 2336 | |
07719a21 LP |
2337 | trim_generator_dir(m, &m->generator_unit_path); |
2338 | trim_generator_dir(m, &m->generator_unit_path_early); | |
2339 | trim_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2340 | |
2341 | finish: | |
2342 | if (d) | |
2343 | closedir(d); | |
5a1e9937 LP |
2344 | } |
2345 | ||
07719a21 | 2346 | static void remove_generator_dir(Manager *m, char **generator) { |
5a1e9937 | 2347 | assert(m); |
07719a21 | 2348 | assert(generator); |
5a1e9937 | 2349 | |
07719a21 | 2350 | if (!*generator) |
5a1e9937 LP |
2351 | return; |
2352 | ||
07719a21 LP |
2353 | strv_remove(m->lookup_paths.unit_path, *generator); |
2354 | rm_rf(*generator, false, true, false); | |
5a1e9937 | 2355 | |
07719a21 LP |
2356 | free(*generator); |
2357 | *generator = NULL; | |
2358 | } | |
2359 | ||
2360 | void manager_undo_generators(Manager *m) { | |
2361 | assert(m); | |
2362 | ||
2363 | remove_generator_dir(m, &m->generator_unit_path); | |
2364 | remove_generator_dir(m, &m->generator_unit_path_early); | |
2365 | remove_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2366 | } |
2367 | ||
06d4c99a LP |
2368 | int manager_set_default_controllers(Manager *m, char **controllers) { |
2369 | char **l; | |
2370 | ||
2371 | assert(m); | |
2372 | ||
9156e799 LP |
2373 | l = strv_copy(controllers); |
2374 | if (!l) | |
06d4c99a LP |
2375 | return -ENOMEM; |
2376 | ||
2377 | strv_free(m->default_controllers); | |
2378 | m->default_controllers = l; | |
2379 | ||
b59e2465 | 2380 | cg_shorten_controllers(m->default_controllers); |
9156e799 | 2381 | |
06d4c99a LP |
2382 | return 0; |
2383 | } | |
2384 | ||
c93ff2e9 FC |
2385 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
2386 | int i; | |
2387 | ||
2388 | assert(m); | |
2389 | ||
2390 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
07719a21 LP |
2391 | if (!default_rlimit[i]) |
2392 | continue; | |
c93ff2e9 | 2393 | |
07719a21 LP |
2394 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
2395 | if (!m->rlimit[i]) | |
2396 | return -ENOMEM; | |
c93ff2e9 FC |
2397 | } |
2398 | ||
2399 | return 0; | |
2400 | } | |
2401 | ||
4cfa2c99 | 2402 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
2403 | Unit *u; |
2404 | ||
2405 | assert(m); | |
2406 | ||
67445f4e | 2407 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
2408 | return; |
2409 | ||
731a676c LP |
2410 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
2411 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 2412 | log_close_journal(); |
731a676c | 2413 | return; |
f1dd0c3f LP |
2414 | } |
2415 | ||
731a676c LP |
2416 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
2417 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 2418 | log_close_journal(); |
731a676c LP |
2419 | return; |
2420 | } | |
f1dd0c3f | 2421 | |
731a676c LP |
2422 | /* Hmm, OK, so the socket is fully up and the service is up |
2423 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
2424 | log_open(); |
2425 | } | |
2426 | ||
27d340c7 LP |
2427 | void manager_set_show_status(Manager *m, bool b) { |
2428 | assert(m); | |
2429 | ||
67445f4e | 2430 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2431 | return; |
2432 | ||
2433 | m->show_status = b; | |
2434 | ||
2435 | if (b) | |
2436 | touch("/run/systemd/show-status"); | |
2437 | else | |
2438 | unlink("/run/systemd/show-status"); | |
2439 | } | |
2440 | ||
2441 | bool manager_get_show_status(Manager *m) { | |
2442 | assert(m); | |
2443 | ||
67445f4e | 2444 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2445 | return false; |
2446 | ||
2447 | if (m->show_status) | |
2448 | return true; | |
2449 | ||
2450 | /* If Plymouth is running make sure we show the status, so | |
2451 | * that there's something nice to see when people press Esc */ | |
2452 | ||
2453 | return plymouth_running(); | |
2454 | } | |
68b29a9f LP |
2455 | |
2456 | void watch_init(Watch *w) { | |
2457 | assert(w); | |
2458 | ||
2459 | w->type = WATCH_INVALID; | |
2460 | w->fd = -1; | |
2461 | } |