]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/core/manager.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
missing.h: add BTRFS_IOC_QUOTA_RESCAN_WAIT (#3266)
[thirdparty/systemd.git] / src / core / manager.c
CommitLineData
a7334b09
LP		 1/***
2 This file is part of systemd.
3
4 Copyright 2010 Lennart Poettering
5
6 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
a7334b09
LP		 9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 14 Lesser General Public License for more details.
a7334b09 15
5430f7f2 16 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
400f1a33 20#include <dirent.h>
60918275 21#include <errno.h>
400f1a33
LP		 22#include <fcntl.h>
23#include <linux/kd.h>
9152c765 24#include <signal.h>
400f1a33 25#include <string.h>
e46b13c8 26#include <sys/epoll.h>
400f1a33 27#include <sys/inotify.h>
e1414003 28#include <sys/ioctl.h>
400f1a33 29#include <sys/reboot.h>
8742514c 30#include <sys/timerfd.h>
400f1a33
LP		 31#include <sys/wait.h>
32#include <unistd.h>
830f6caa
LP		 33
34#ifdef HAVE_AUDIT
4927fcae 35#include <libaudit.h>
830f6caa 36#endif
60918275 37
718db961 38#include "sd-daemon.h"
718db961 39#include "sd-messages.h"
81527be1 40
b5efdb8a 41#include "alloc-util.h"
400f1a33
LP		 42#include "audit-fd.h"
43#include "boot-timestamps.h"
44#include "bus-common-errors.h"
45#include "bus-error.h"
46#include "bus-kernel.h"
47#include "bus-util.h"
48#include "dbus-job.h"
49#include "dbus-manager.h"
50#include "dbus-unit.h"
51#include "dbus.h"
d063a527 52#include "dirent-util.h"
400f1a33 53#include "env-util.h"
4f5dd394 54#include "escape.h"
400f1a33 55#include "exit-status.h"
3ffd4af2 56#include "fd-util.h"
0d39fa9c 57#include "fileio.h"
f4f15635 58#include "fs-util.h"
60918275 59#include "hashmap.h"
c004493c 60#include "io-util.h"
400f1a33 61#include "locale-setup.h"
16354eff 62#include "log.h"
400f1a33 63#include "macro.h"
3ffd4af2 64#include "manager.h"
400f1a33 65#include "missing.h"
49e942b2 66#include "mkdir.h"
39591351 67#include "mkdir.h"
6bedfcbb 68#include "parse-util.h"
400f1a33
LP		 69#include "path-lookup.h"
70#include "path-util.h"
71#include "process-util.h"
ea430986 72#include "ratelimit.h"
c6878637 73#include "rm-rf.h"
400f1a33 74#include "signal-util.h"
514f4ef5 75#include "special.h"
8fcde012 76#include "stat-util.h"
8b43440b 77#include "string-table.h"
07630cea 78#include "string-util.h"
400f1a33
LP		 79#include "strv.h"
80#include "terminal-util.h"
81#include "time-util.h"
82#include "transaction.h"
affb60b1 83#include "umask-util.h"
400f1a33
LP		 84#include "unit-name.h"
85#include "util.h"
5dc4c17f 86#include "virt.h"
e96d6be7 87#include "watchdog.h"
60918275 88
a47806fa 89#define NOTIFY_RCVBUF_SIZE (8*1024*1024)
d8fdc620 90#define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
a47806fa 91
03b717a3 92/* Initial delay and the interval for printing status messages about running jobs */
fd08a840
ZJS		 93#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
94#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
03b717a3
MS		 95#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
96
718db961 97static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
d8fdc620 98static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
718db961
LP		 99static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
100static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
101static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
102static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
752b5905 103static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
e801700e 104static int manager_run_generators(Manager *m);
718db961 105
2ae56591 106static void manager_watch_jobs_in_progress(Manager *m) {
e5723c89 107 usec_t next;
cfa9677b 108 int r;
e5723c89 109
718db961 110 assert(m);
03b717a3 111
718db961 112 if (m->jobs_in_progress_event_source)
2ae56591 113 return;
03b717a3 114
e5723c89 115 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
cfa9677b 116 r = sd_event_add_time(
6a0f1f6d
LP		 117 m->event,
118 &m->jobs_in_progress_event_source,
119 CLOCK_MONOTONIC,
120 next, 0,
121 manager_dispatch_jobs_in_progress, m);
cfa9677b
MM		 122 if (r < 0)
123 return;
7dfbe2e3
TG		 124
125 (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress");
03b717a3
MS		 126}
127
1fc464f6 128#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
03b717a3 129
03b717a3
MS		 130static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
131 char *p = buffer;
132
133 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
134 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
135
136 if (pos > 1) {
6282c859
MS		 137 if (pos > 2)
138 p = mempset(p, ' ', pos-2);
1fc464f6 139 p = stpcpy(p, ANSI_RED);
03b717a3
MS		 140 *p++ = '*';
141 }
142
143 if (pos > 0 && pos <= width) {
1fc464f6 144 p = stpcpy(p, ANSI_HIGHLIGHT_RED);
03b717a3
MS		 145 *p++ = '*';
146 }
147
1fc464f6 148 p = stpcpy(p, ANSI_NORMAL);
03b717a3
MS		 149
150 if (pos < width) {
1fc464f6 151 p = stpcpy(p, ANSI_RED);
03b717a3 152 *p++ = '*';
6282c859
MS		 153 if (pos < width-1)
154 p = mempset(p, ' ', width-1-pos);
1fc464f6 155 strcpy(p, ANSI_NORMAL);
03b717a3 156 }
03b717a3
MS		 157}
158
cb8ccb22 159void manager_flip_auto_status(Manager *m, bool enable) {
f755e3b7
LP		 160 assert(m);
161
cb8ccb22
ZJS		 162 if (enable) {
163 if (m->show_status == SHOW_STATUS_AUTO)
164 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
165 } else {
166 if (m->show_status == SHOW_STATUS_TEMPORARY)
167 manager_set_show_status(m, SHOW_STATUS_AUTO);
168 }
169}
170
03b717a3 171static void manager_print_jobs_in_progress(Manager *m) {
718db961 172 _cleanup_free_ char *job_of_n = NULL;
03b717a3
MS		 173 Iterator i;
174 Job *j;
03b717a3
MS		 175 unsigned counter = 0, print_nr;
176 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
177 unsigned cylon_pos;
8bb310c3
ZJS		 178 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
179 uint64_t x;
03b717a3 180
718db961 181 assert(m);
9c3349e2 182 assert(m->n_running_jobs > 0);
718db961 183
cb8ccb22 184 manager_flip_auto_status(m, true);
d450b6f2 185
03b717a3
MS		 186 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
187
188 HASHMAP_FOREACH(j, m->jobs, i)
189 if (j->state == JOB_RUNNING && counter++ == print_nr)
190 break;
191
e970a72e
MS		 192 /* m->n_running_jobs must be consistent with the contents of m->jobs,
193 * so the above loop must have succeeded in finding j. */
194 assert(counter == print_nr + 1);
51d122af 195 assert(j);
5a82a91a 196
03b717a3
MS		 197 cylon_pos = m->jobs_in_progress_iteration % 14;
198 if (cylon_pos >= 8)
199 cylon_pos = 14 - cylon_pos;
200 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
201
8bb310c3
ZJS		 202 m->jobs_in_progress_iteration++;
203
d6483ba7
ZJS		 204 if (m->n_running_jobs > 1) {
205 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
206 job_of_n = NULL;
207 }
03b717a3 208
8bb310c3
ZJS		 209 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
210 if (job_get_timeout(j, &x) > 0)
211 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
212
127d5fd1 213 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
8bb310c3
ZJS		 214 "%sA %s job is running for %s (%s / %s)",
215 strempty(job_of_n),
216 job_type_to_string(j->type),
217 unit_description(j->unit),
218 time, limit);
03b717a3
MS		 219}
220
e46b13c8
ZJS		 221static int have_ask_password(void) {
222 _cleanup_closedir_ DIR *dir;
223
224 dir = opendir("/run/systemd/ask-password");
225 if (!dir) {
226 if (errno == ENOENT)
227 return false;
228 else
229 return -errno;
230 }
231
232 for (;;) {
233 struct dirent *de;
234
235 errno = 0;
236 de = readdir(dir);
b3267152 237 if (!de && errno > 0)
e46b13c8
ZJS		 238 return -errno;
239 if (!de)
240 return false;
241
242 if (startswith(de->d_name, "ask."))
243 return true;
244 }
245}
246
247static int manager_dispatch_ask_password_fd(sd_event_source *source,
248 int fd, uint32_t revents, void *userdata) {
249 Manager *m = userdata;
250
251 assert(m);
252
253 flush_fd(fd);
254
255 m->have_ask_password = have_ask_password();
256 if (m->have_ask_password < 0)
257 /* Log error but continue. Negative have_ask_password
258 * is treated as unknown status. */
c33b3297 259 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
e46b13c8
ZJS		 260
261 return 0;
262}
263
264static void manager_close_ask_password(Manager *m) {
265 assert(m);
266
e46b13c8 267 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
90990e28 268 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
e46b13c8
ZJS		 269 m->have_ask_password = -EINVAL;
270}
271
272static int manager_check_ask_password(Manager *m) {
273 int r;
274
275 assert(m);
276
277 if (!m->ask_password_event_source) {
278 assert(m->ask_password_inotify_fd < 0);
279
280 mkdir_p_label("/run/systemd/ask-password", 0755);
281
282 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 283 if (m->ask_password_inotify_fd < 0)
284 return log_error_errno(errno, "inotify_init1() failed: %m");
e46b13c8
ZJS		 285
286 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
56f64d95 287 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
e46b13c8
ZJS		 288 manager_close_ask_password(m);
289 return -errno;
290 }
291
292 r = sd_event_add_io(m->event, &m->ask_password_event_source,
293 m->ask_password_inotify_fd, EPOLLIN,
294 manager_dispatch_ask_password_fd, m);
295 if (r < 0) {
56f64d95 296 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
e46b13c8
ZJS		 297 manager_close_ask_password(m);
298 return -errno;
299 }
300
7dfbe2e3
TG		 301 (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
302
e46b13c8
ZJS		 303 /* Queries might have been added meanwhile... */
304 manager_dispatch_ask_password_fd(m->ask_password_event_source,
305 m->ask_password_inotify_fd, EPOLLIN, m);
306 }
307
308 return m->have_ask_password;
309}
310
31a7eb86 311static int manager_watch_idle_pipe(Manager *m) {
31a7eb86
ZJS		 312 int r;
313
718db961
LP		 314 assert(m);
315
316 if (m->idle_pipe_event_source)
31a7eb86
ZJS		 317 return 0;
318
319 if (m->idle_pipe[2] < 0)
320 return 0;
321
151b9b96 322 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
23bbb0de
MS		 323 if (r < 0)
324 return log_error_errno(r, "Failed to watch idle pipe: %m");
31a7eb86 325
7dfbe2e3
TG		 326 (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
327
31a7eb86 328 return 0;
31a7eb86
ZJS		 329}
330
718db961
LP		 331static void manager_close_idle_pipe(Manager *m) {
332 assert(m);
31a7eb86 333
cd72bd8a
LP		 334 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
335
3d94f76c
LP		 336 safe_close_pair(m->idle_pipe);
337 safe_close_pair(m->idle_pipe + 2);
31a7eb86
ZJS		 338}
339
8742514c 340static int manager_setup_time_change(Manager *m) {
718db961 341 int r;
b92bea5d
ZJS		 342
343 /* We only care for the cancellation event, hence we set the
344 * timeout to the latest possible value. */
345 struct itimerspec its = {
346 .it_value.tv_sec = TIME_T_MAX,
347 };
8742514c 348
718db961
LP		 349 assert(m);
350 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
8742514c 351
0d8c31ff
ZJS		 352 if (m->test_run)
353 return 0;
354
8742514c
LP		 355 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
356 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
357
718db961 358 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
4a62c710
MS		 359 if (m->time_change_fd < 0)
360 return log_error_errno(errno, "Failed to create timerfd: %m");
8742514c 361
718db961 362 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
56f64d95 363 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
03e334a1 364 m->time_change_fd = safe_close(m->time_change_fd);
8742514c
LP		 365 return 0;
366 }
367
151b9b96 368 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
23bbb0de
MS		 369 if (r < 0)
370 return log_error_errno(r, "Failed to create time change event source: %m");
8742514c 371
7dfbe2e3
TG		 372 (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
373
8742514c
LP		 374 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
375
376 return 0;
377}
378
80876c20 379static int enable_special_signals(Manager *m) {
718db961 380 _cleanup_close_ int fd = -1;
80876c20
LP		 381
382 assert(m);
383
37453b3a
EV		 384 if (m->test_run)
385 return 0;
386
a41b539e 387 /* Enable that we get SIGINT on control-alt-del. In containers
c9999773
LP		 388 * this will fail with EPERM (older) or EINVAL (newer), so
389 * ignore that. */
390 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
56f64d95 391 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
80876c20 392
a41b539e
LP		 393 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
394 if (fd < 0) {
395 /* Support systems without virtual console */
396 if (fd != -ENOENT)
56f64d95 397 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
a41b539e 398 } else {
80876c20
LP		 399 /* Enable that we get SIGWINCH on kbrequest */
400 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
56f64d95 401 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
80876c20
LP		 402 }
403
404 return 0;
405}
406
ce578209 407static int manager_setup_signals(Manager *m) {
b92bea5d
ZJS		 408 struct sigaction sa = {
409 .sa_handler = SIG_DFL,
410 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
411 };
718db961
LP		 412 sigset_t mask;
413 int r;
60918275 414
ce578209
LP		 415 assert(m);
416
57c0c30e
LP		 417 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
418
4dffec14
LP		 419 /* We make liberal use of realtime signals here. On
420 * Linux/glibc we have 30 of them (with the exception of Linux
421 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
422 * (aka SIGRTMAX). */
7d793605 423
4dffec14 424 assert_se(sigemptyset(&mask) == 0);
7d793605
LP		 425 sigset_add_many(&mask,
426 SIGCHLD, /* Child died */
427 SIGTERM, /* Reexecute daemon */
428 SIGHUP, /* Reload configuration */
429 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
430 SIGUSR2, /* systemd: dump status */
431 SIGINT, /* Kernel sends us this on control-alt-del */
432 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
433 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
4dffec14 434
7d793605 435 SIGRTMIN+0, /* systemd: start default.target */
0003d1ab 436 SIGRTMIN+1, /* systemd: isolate rescue.target */
7d793605
LP		 437 SIGRTMIN+2, /* systemd: isolate emergency.target */
438 SIGRTMIN+3, /* systemd: start halt.target */
439 SIGRTMIN+4, /* systemd: start poweroff.target */
440 SIGRTMIN+5, /* systemd: start reboot.target */
0003d1ab 441 SIGRTMIN+6, /* systemd: start kexec.target */
4dffec14
LP		 442
443 /* ... space for more special targets ... */
444
0003d1ab
LP		 445 SIGRTMIN+13, /* systemd: Immediate halt */
446 SIGRTMIN+14, /* systemd: Immediate poweroff */
447 SIGRTMIN+15, /* systemd: Immediate reboot */
448 SIGRTMIN+16, /* systemd: Immediate kexec */
4dffec14
LP		 449
450 /* ... space for more immediate system state changes ... */
451
0658666b
LP		 452 SIGRTMIN+20, /* systemd: enable status messages */
453 SIGRTMIN+21, /* systemd: disable status messages */
253ee27a
LP		 454 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
455 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
600b704e 456 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
4dffec14
LP		 457
458 /* .. one free signal here ... */
459
460#if !defined(__hppa64__) && !defined(__hppa__)
461 /* Apparently Linux on hppa has fewer RT
462 * signals (SIGRTMAX is SIGRTMIN+25 there),
463 * hence let's not try to make use of them
464 * here. Since these commands are accessible
465 * by different means and only really a safety
466 * net, the missing functionality on hppa
467 * shouldn't matter. */
468
4cfa2c99 469 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
253ee27a
LP		 470 SIGRTMIN+27, /* systemd: set log target to console */
471 SIGRTMIN+28, /* systemd: set log target to kmsg */
ee33e53a 472 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
4dffec14
LP		 473
474 /* ... one free signal here SIGRTMIN+30 ... */
475#endif
7d793605 476 -1);
ce578209
LP		 477 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
478
718db961
LP		 479 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
480 if (m->signal_fd < 0)
ce578209
LP		 481 return -errno;
482
151b9b96 483 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
718db961
LP		 484 if (r < 0)
485 return r;
ce578209 486
7dfbe2e3
TG		 487 (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
488
d8fdc620
LP		 489 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
490 * notify processing can still figure out to which process/service a message belongs, before we reap the
491 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
492 * status information before detecting that there's no process in a cgroup. */
493 r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6);
29083707
LP		 494 if (r < 0)
495 return r;
496
463d0d15 497 if (MANAGER_IS_SYSTEM(m))
80876c20 498 return enable_special_signals(m);
e1414003 499
ce578209
LP		 500 return 0;
501}
502
f069efb4
LP		 503static void manager_clean_environment(Manager *m) {
504 assert(m);
505
506 /* Let's remove some environment variables that we
507 * need ourselves to communicate with our clients */
508 strv_env_unset_many(
509 m->environment,
510 "NOTIFY_SOCKET",
511 "MAINPID",
512 "MANAGERPID",
513 "LISTEN_PID",
514 "LISTEN_FDS",
8dd4c05b 515 "LISTEN_FDNAMES",
f069efb4
LP		 516 "WATCHDOG_PID",
517 "WATCHDOG_USEC",
518 NULL);
519}
520
e21fea24 521static int manager_default_environment(Manager *m) {
71ecc858
LP		 522 assert(m);
523
463d0d15 524 if (MANAGER_IS_SYSTEM(m)) {
e21fea24
KS		 525 /* The system manager always starts with a clean
526 * environment for its children. It does not import
527 * the kernel or the parents exported variables.
528 *
529 * The initial passed environ is untouched to keep
530 * /proc/self/environ valid; it is used for tagging
531 * the init process inside containers. */
43638332
ZJS		 532 m->environment = strv_new("PATH=" DEFAULT_PATH,
533 NULL);
e21fea24
KS		 534
535 /* Import locale variables LC_*= from configuration */
536 locale_setup(&m->environment);
43d03a83 537 } else {
e21fea24
KS		 538 /* The user manager passes its own environment
539 * along to its children. */
540 m->environment = strv_copy(environ);
43d03a83
LP		 541 }
542
e21fea24
KS		 543 if (!m->environment)
544 return -ENOMEM;
8b55b8c4 545
f069efb4 546 manager_clean_environment(m);
9d5a3757
LP		 547 strv_sort(m->environment);
548
e21fea24 549 return 0;
71ecc858
LP		 550}
551
f2341e0a 552
463d0d15 553int manager_new(UnitFileScope scope, bool test_run, Manager **_m) {
ce578209 554 Manager *m;
e3dd987c 555 int r;
8e274523
LP		 556
557 assert(_m);
463d0d15 558 assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER));
ce578209 559
915b3753
LP		 560 m = new0(Manager, 1);
561 if (!m)
8e274523 562 return -ENOMEM;
60918275 563
463d0d15 564 m->unit_file_scope = scope;
a16e1123 565 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
bd8f585b 566 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
9ded9cd1
LP		 567 m->default_tasks_accounting = true;
568 m->default_tasks_max = UINT64_C(512);
80876c20 569
463d0d15
LP		 570#ifdef ENABLE_EFI
571 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
572 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
573#endif
574
f2341e0a 575 /* Prepare log fields we can use for structured logging */
463d0d15
LP		 576 if (MANAGER_IS_SYSTEM(m)) {
577 m->unit_log_field = "UNIT=";
578 m->unit_log_format_string = "UNIT=%s";
579 } else {
580 m->unit_log_field = "USER_UNIT=";
581 m->unit_log_format_string = "USER_UNIT=%s";
582 }
f2341e0a 583
718db961 584 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
8742514c 585
d8fdc620
LP		 586 m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd =
587 m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd =
588 m->ask_password_inotify_fd = -1;
d379d442 589
ea430986 590 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
9152c765 591
e46b13c8 592 m->have_ask_password = -EINVAL; /* we don't know */
ae2a2c53 593 m->first_boot = -1;
e46b13c8 594
0d8c31ff
ZJS		 595 m->test_run = test_run;
596
2e5c94b9
LP		 597 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
598 RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
599
e21fea24
KS		 600 r = manager_default_environment(m);
601 if (r < 0)
1137a57c
LP		 602 goto fail;
603
d5099efc 604 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
718db961 605 if (r < 0)
60918275
LP		 606 goto fail;
607
d5099efc 608 r = hashmap_ensure_allocated(&m->jobs, NULL);
718db961 609 if (r < 0)
60918275
LP		 610 goto fail;
611
d5099efc 612 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
718db961 613 if (r < 0)
9152c765
LP		 614 goto fail;
615
d5099efc 616 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
718db961 617 if (r < 0)
05e343b7
LP		 618 goto fail;
619
718db961
LP		 620 r = sd_event_default(&m->event);
621 if (r < 0)
8742514c
LP		 622 goto fail;
623
151b9b96 624 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
752b5905
LP		 625 if (r < 0)
626 goto fail;
627
628 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
629 if (r < 0)
630 goto fail;
631
632 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
633 if (r < 0)
634 goto fail;
635
7dfbe2e3
TG		 636 (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
637
8742514c
LP		 638 r = manager_setup_signals(m);
639 if (r < 0)
9152c765
LP		 640 goto fail;
641
8742514c
LP		 642 r = manager_setup_cgroup(m);
643 if (r < 0)
8e274523
LP		 644 goto fail;
645
8742514c
LP		 646 r = manager_setup_time_change(m);
647 if (r < 0)
8c47c732
LP		 648 goto fail;
649
9670d583
LP		 650 m->udev = udev_new();
651 if (!m->udev) {
652 r = -ENOMEM;
653 goto fail;
654 }
655
d86f9d52
LP		 656 /* Note that we set up neither kdbus, nor the notify fd
657 * here. We do that after deserialization, since they might
658 * have gotten serialized across the reexec. */
659
72bc8d00
LP		 660 m->taint_usr = dir_is_empty("/usr") > 0;
661
8e274523
LP		 662 *_m = m;
663 return 0;
60918275
LP		 664
665fail:
666 manager_free(m);
8e274523 667 return r;
60918275
LP		 668}
669
d86f9d52 670static int manager_setup_notify(Manager *m) {
7181dbdb 671 int r;
d86f9d52 672
0d8c31ff
ZJS		 673 if (m->test_run)
674 return 0;
675
d86f9d52
LP		 676 if (m->notify_fd < 0) {
677 _cleanup_close_ int fd = -1;
920b52e4 678 union sockaddr_union sa = {
7181dbdb
LP		 679 .sa.sa_family = AF_UNIX,
680 };
55836941 681 static const int one = 1;
92dd7c49 682 const char *e;
d86f9d52
LP		 683
684 /* First free all secondary fields */
a1e58e8e 685 m->notify_socket = mfree(m->notify_socket);
d86f9d52
LP		 686 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
687
688 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
4a62c710
MS		 689 if (fd < 0)
690 return log_error_errno(errno, "Failed to allocate notification socket: %m");
d86f9d52 691
a47806fa
LP		 692 fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE);
693
92dd7c49
LP		 694 e = manager_get_runtime_prefix(m);
695 if (!e) {
696 log_error("Failed to determine runtime prefix.");
697 return -EINVAL;
7181dbdb 698 }
92dd7c49
LP		 699
700 m->notify_socket = strappend(e, "/systemd/notify");
498e87d6
LP		 701 if (!m->notify_socket)
702 return log_oom();
703
704 (void) mkdir_parents_label(m->notify_socket, 0755);
f0e62e89 705 (void) unlink(m->notify_socket);
7181dbdb
LP		 706
707 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
fc2fffe7 708 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
4a62c710
MS		 709 if (r < 0)
710 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
d86f9d52
LP		 711
712 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
4a62c710
MS		 713 if (r < 0)
714 return log_error_errno(errno, "SO_PASSCRED failed: %m");
d86f9d52 715
d86f9d52
LP		 716 m->notify_fd = fd;
717 fd = -1;
718
719 log_debug("Using notification socket %s", m->notify_socket);
720 }
721
722 if (!m->notify_event_source) {
151b9b96 723 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
895b3a7b
MS		 724 if (r < 0)
725 return log_error_errno(r, "Failed to allocate notify event source: %m");
d86f9d52 726
d8fdc620
LP		 727 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
728 * service an exit message belongs. */
df006034 729 r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7);
23bbb0de
MS		 730 if (r < 0)
731 return log_error_errno(r, "Failed to set priority of notify event source: %m");
7dfbe2e3
TG		 732
733 (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
d86f9d52
LP		 734 }
735
736 return 0;
737}
738
d8fdc620
LP		 739static int manager_setup_cgroups_agent(Manager *m) {
740
741 static const union sockaddr_union sa = {
742 .un.sun_family = AF_UNIX,
743 .un.sun_path = "/run/systemd/cgroups-agent",
744 };
745 int r;
746
747 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
748 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
749 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
750 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
751 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
752 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
753 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
754 * we thus won't lose messages.
755 *
756 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
757 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
758 * bus for these messages. */
759
760 if (m->test_run)
761 return 0;
762
763 if (!MANAGER_IS_SYSTEM(m))
764 return 0;
765
766 if (cg_unified() > 0) /* We don't need this anymore on the unified hierarchy */
767 return 0;
768
769 if (m->cgroups_agent_fd < 0) {
770 _cleanup_close_ int fd = -1;
771
772 /* First free all secondary fields */
773 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
774
775 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
776 if (fd < 0)
777 return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m");
778
779 fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE);
780
781 (void) unlink(sa.un.sun_path);
782
783 /* Only allow root to connect to this socket */
784 RUN_WITH_UMASK(0077)
fc2fffe7 785 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
d8fdc620
LP		 786 if (r < 0)
787 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
788
789 m->cgroups_agent_fd = fd;
790 fd = -1;
791 }
792
793 if (!m->cgroups_agent_event_source) {
794 r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m);
795 if (r < 0)
796 return log_error_errno(r, "Failed to allocate cgroups agent event source: %m");
797
798 /* Process cgroups notifications early, but after having processed service notification messages or
799 * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification,
800 * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of
801 * cgroup inotify for the unified cgroup stuff. */
802 r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5);
803 if (r < 0)
804 return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m");
805
806 (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent");
807 }
808
809 return 0;
810}
811
d86f9d52
LP		 812static int manager_setup_kdbus(Manager *m) {
813 _cleanup_free_ char *p = NULL;
814
815 assert(m);
816
0d8c31ff 817 if (m->test_run || m->kdbus_fd >= 0)
d86f9d52 818 return 0;
d79acc30
DH		 819 if (!is_kdbus_available())
820 return -ESOCKTNOSUPPORT;
d86f9d52 821
1a299299 822 m->kdbus_fd = bus_kernel_create_bus(
463d0d15
LP		 823 MANAGER_IS_SYSTEM(m) ? "system" : "user",
824 MANAGER_IS_SYSTEM(m), &p);
1a299299 825
eb56eb9b
MS		 826 if (m->kdbus_fd < 0)
827 return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m");
d86f9d52
LP		 828
829 log_debug("Successfully set up kdbus on %s", p);
d86f9d52
LP		 830
831 return 0;
832}
833
834static int manager_connect_bus(Manager *m, bool reexecuting) {
835 bool try_bus_connect;
836
837 assert(m);
838
0d8c31ff
ZJS		 839 if (m->test_run)
840 return 0;
841
d86f9d52
LP		 842 try_bus_connect =
843 m->kdbus_fd >= 0 ||
844 reexecuting ||
463d0d15 845 (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"));
d86f9d52 846
ff9b60f3 847 /* Try to connect to the buses, if possible. */
d86f9d52
LP		 848 return bus_init(m, try_bus_connect);
849}
850
23a177ef 851static unsigned manager_dispatch_cleanup_queue(Manager *m) {
595ed347 852 Unit *u;
23a177ef
LP		 853 unsigned n = 0;
854
855 assert(m);
856
595ed347
MS		 857 while ((u = m->cleanup_queue)) {
858 assert(u->in_cleanup_queue);
23a177ef 859
595ed347 860 unit_free(u);
23a177ef
LP		 861 n++;
862 }
863
864 return n;
865}
866
eced69b3 867enum {
35b8ca3a 868 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
eced69b3
LP		 869 GC_OFFSET_UNSURE, /* No clue */
870 GC_OFFSET_GOOD, /* We still need this unit */
871 GC_OFFSET_BAD, /* We don't need this unit anymore */
872 _GC_OFFSET_MAX
873};
874
875static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
701cc384
LP		 876 Iterator i;
877 Unit *other;
eced69b3 878 bool is_bad;
701cc384
LP		 879
880 assert(u);
881
ac155bb8
MS		 882 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
883 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
884 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
701cc384
LP		 885 return;
886
ac155bb8 887 if (u->in_cleanup_queue)
701cc384
LP		 888 goto bad;
889
890 if (unit_check_gc(u))
891 goto good;
892
ac155bb8 893 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
eced69b3
LP		 894
895 is_bad = true;
896
ac155bb8 897 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
701cc384
LP		 898 unit_gc_sweep(other, gc_marker);
899
ac155bb8 900 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
701cc384 901 goto good;
eced69b3 902
ac155bb8 903 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
eced69b3 904 is_bad = false;
701cc384
LP		 905 }
906
eced69b3
LP		 907 if (is_bad)
908 goto bad;
909
910 /* We were unable to find anything out about this entry, so
911 * let's investigate it later */
ac155bb8 912 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
eced69b3
LP		 913 unit_add_to_gc_queue(u);
914 return;
915
701cc384 916bad:
eced69b3
LP		 917 /* We definitely know that this one is not useful anymore, so
918 * let's mark it for deletion */
ac155bb8 919 u->gc_marker = gc_marker + GC_OFFSET_BAD;
eced69b3 920 unit_add_to_cleanup_queue(u);
701cc384
LP		 921 return;
922
923good:
ac155bb8 924 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
701cc384
LP		 925}
926
927static unsigned manager_dispatch_gc_queue(Manager *m) {
595ed347 928 Unit *u;
701cc384 929 unsigned n = 0;
eced69b3 930 unsigned gc_marker;
701cc384
LP		 931
932 assert(m);
933
cf1265e1 934 /* log_debug("Running GC..."); */
701cc384 935
eced69b3
LP		 936 m->gc_marker += _GC_OFFSET_MAX;
937 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
c9c0cadb 938 m->gc_marker = 1;
701cc384 939
eced69b3
LP		 940 gc_marker = m->gc_marker;
941
595ed347
MS		 942 while ((u = m->gc_queue)) {
943 assert(u->in_gc_queue);
701cc384 944
595ed347 945 unit_gc_sweep(u, gc_marker);
eced69b3 946
71fda00f 947 LIST_REMOVE(gc_queue, m->gc_queue, u);
595ed347 948 u->in_gc_queue = false;
701cc384
LP		 949
950 n++;
951
595ed347
MS		 952 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
953 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
cc3bc3e6 954 if (u->id)
f2341e0a 955 log_unit_debug(u, "Collecting.");
595ed347
MS		 956 u->gc_marker = gc_marker + GC_OFFSET_BAD;
957 unit_add_to_cleanup_queue(u);
701cc384
LP		 958 }
959 }
960
961 m->n_in_gc_queue = 0;
701cc384
LP		 962
963 return n;
964}
965
a16e1123 966static void manager_clear_jobs_and_units(Manager *m) {
a16e1123 967 Unit *u;
60918275
LP		 968
969 assert(m);
970
87f0e418
LP		 971 while ((u = hashmap_first(m->units)))
972 unit_free(u);
964e0949
LP		 973
974 manager_dispatch_cleanup_queue(m);
975
976 assert(!m->load_queue);
977 assert(!m->run_queue);
978 assert(!m->dbus_unit_queue);
979 assert(!m->dbus_job_queue);
980 assert(!m->cleanup_queue);
981 assert(!m->gc_queue);
982
964e0949
LP		 983 assert(hashmap_isempty(m->jobs));
984 assert(hashmap_isempty(m->units));
9e9e2b72
MS		 985
986 m->n_on_console = 0;
987 m->n_running_jobs = 0;
a16e1123
LP		 988}
989
06d8d842 990Manager* manager_free(Manager *m) {
a16e1123 991 UnitType c;
c93ff2e9 992 int i;
87f0e418 993
06d8d842
ZJS		 994 if (!m)
995 return NULL;
a16e1123
LP		 996
997 manager_clear_jobs_and_units(m);
23a177ef 998
7824bbeb
LP		 999 for (c = 0; c < _UNIT_TYPE_MAX; c++)
1000 if (unit_vtable[c]->shutdown)
1001 unit_vtable[c]->shutdown(m);
1002
a16e1123
LP		 1003 /* If we reexecute ourselves, we keep the root cgroup
1004 * around */
c6c18be3 1005 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
8e274523 1006
07a78643 1007 lookup_paths_flush_generator(&m->lookup_paths);
5a1e9937 1008
5e8d1c9a 1009 bus_done(m);
ea430986 1010
87f0e418 1011 hashmap_free(m->units);
60918275 1012 hashmap_free(m->jobs);
5ba6985b
LP		 1013 hashmap_free(m->watch_pids1);
1014 hashmap_free(m->watch_pids2);
05e343b7 1015 hashmap_free(m->watch_bus);
9152c765 1016
95ae05c0 1017 set_free(m->startup_units);
f755e3b7
LP		 1018 set_free(m->failed_units);
1019
718db961
LP		 1020 sd_event_source_unref(m->signal_event_source);
1021 sd_event_source_unref(m->notify_event_source);
d8fdc620 1022 sd_event_source_unref(m->cgroups_agent_event_source);
718db961
LP		 1023 sd_event_source_unref(m->time_change_event_source);
1024 sd_event_source_unref(m->jobs_in_progress_event_source);
752b5905 1025 sd_event_source_unref(m->run_queue_event_source);
718db961 1026
03e334a1
LP		 1027 safe_close(m->signal_fd);
1028 safe_close(m->notify_fd);
d8fdc620 1029 safe_close(m->cgroups_agent_fd);
03e334a1
LP		 1030 safe_close(m->time_change_fd);
1031 safe_close(m->kdbus_fd);
718db961 1032
e46b13c8
ZJS		 1033 manager_close_ask_password(m);
1034
718db961
LP		 1035 manager_close_idle_pipe(m);
1036
9670d583 1037 udev_unref(m->udev);
718db961 1038 sd_event_unref(m->event);
60918275 1039
c952c6ec
LP		 1040 free(m->notify_socket);
1041
84e3543e 1042 lookup_paths_free(&m->lookup_paths);
1137a57c 1043 strv_free(m->environment);
036643a2 1044
4ad49000 1045 hashmap_free(m->cgroup_unit);
c6c18be3 1046 set_free_free(m->unit_path_cache);
33be102a 1047
664f88a7
LP		 1048 free(m->switch_root);
1049 free(m->switch_root_init);
1050
517d56b1 1051 for (i = 0; i < _RLIMIT_MAX; i++)
d9814c76 1052 m->rlimit[i] = mfree(m->rlimit[i]);
c93ff2e9 1053
a57f7e2c
LP		 1054 assert(hashmap_isempty(m->units_requiring_mounts_for));
1055 hashmap_free(m->units_requiring_mounts_for);
1056
60918275 1057 free(m);
06d8d842 1058 return NULL;
60918275
LP		 1059}
1060
ba64af90 1061void manager_enumerate(Manager *m) {
f50e0a01 1062 UnitType c;
f50e0a01
LP		 1063
1064 assert(m);
1065
a16e1123
LP		 1066 /* Let's ask every type to load all units from disk/kernel
1067 * that it might know */
0faacd47 1068 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
1c2e9646 1069 if (!unit_type_supported(c)) {
03afec3c 1070 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
0faacd47 1071 continue;
a57f7e2c 1072 }
f50e0a01 1073
0faacd47
LP		 1074 if (!unit_vtable[c]->enumerate)
1075 continue;
1076
ba64af90 1077 unit_vtable[c]->enumerate(m);
0faacd47
LP		 1078 }
1079
f50e0a01 1080 manager_dispatch_load_queue(m);
a16e1123
LP		 1081}
1082
007c6337 1083static void manager_coldplug(Manager *m) {
a16e1123
LP		 1084 Iterator i;
1085 Unit *u;
1086 char *k;
007c6337 1087 int r;
a16e1123
LP		 1088
1089 assert(m);
f50e0a01
LP		 1090
1091 /* Then, let's set up their initial state. */
1092 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1093
1094 /* ignore aliases */
ac155bb8 1095 if (u->id != k)
f50e0a01
LP		 1096 continue;
1097
007c6337
LP		 1098 r = unit_coldplug(u);
1099 if (r < 0)
1100 log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
f50e0a01 1101 }
a16e1123
LP		 1102}
1103
fe51822e
LP		 1104static void manager_build_unit_path_cache(Manager *m) {
1105 char **i;
fe51822e
LP		 1106 int r;
1107
1108 assert(m);
1109
1110 set_free_free(m->unit_path_cache);
1111
d5099efc 1112 m->unit_path_cache = set_new(&string_hash_ops);
874310b7 1113 if (!m->unit_path_cache) {
d063a527
LP		 1114 r = -ENOMEM;
1115 goto fail;
fe51822e
LP		 1116 }
1117
1118 /* This simply builds a list of files we know exist, so that
1119 * we don't always have to go to disk */
1120
a3c4eb07 1121 STRV_FOREACH(i, m->lookup_paths.search_path) {
d063a527 1122 _cleanup_closedir_ DIR *d = NULL;
fe51822e
LP		 1123 struct dirent *de;
1124
bd0af849
ZJS		 1125 d = opendir(*i);
1126 if (!d) {
874310b7 1127 if (errno != ENOENT)
d063a527 1128 log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i);
fe51822e
LP		 1129 continue;
1130 }
1131
d063a527 1132 FOREACH_DIRENT(de, d, r = -errno; goto fail) {
fe51822e
LP		 1133 char *p;
1134
b7def684 1135 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
44d91056 1136 if (!p) {
fe51822e
LP		 1137 r = -ENOMEM;
1138 goto fail;
1139 }
1140
ef42202a
ZJS		 1141 r = set_consume(m->unit_path_cache, p);
1142 if (r < 0)
fe51822e 1143 goto fail;
fe51822e 1144 }
fe51822e
LP		 1145 }
1146
1147 return;
1148
1149fail:
d063a527
LP		 1150 log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m");
1151 m->unit_path_cache = set_free_free(m->unit_path_cache);
fe51822e
LP		 1152}
1153
9ff1a6f1 1154static void manager_distribute_fds(Manager *m, FDSet *fds) {
9588bc32 1155 Iterator i;
9ff1a6f1 1156 Unit *u;
9588bc32
LP		 1157
1158 assert(m);
1159
1160 HASHMAP_FOREACH(u, m->units, i) {
1161
1162 if (fdset_size(fds) <= 0)
1163 break;
1164
9ff1a6f1
LP		 1165 if (!UNIT_VTABLE(u)->distribute_fds)
1166 continue;
9588bc32 1167
9ff1a6f1
LP		 1168 UNIT_VTABLE(u)->distribute_fds(u, fds);
1169 }
9588bc32
LP		 1170}
1171
a16e1123
LP		 1172int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1173 int r, q;
1174
1175 assert(m);
1176
4943d143 1177 r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
e801700e
ZJS		 1178 if (r < 0)
1179 return r;
5a1e9937 1180
39591351
LP		 1181 /* Make sure the transient directory always exists, so that it remains in the search path */
1182 r = mkdir_p_label(m->lookup_paths.transient, 0755);
1183 if (r < 0)
1184 return r;
1185
a3c4eb07
LP		 1186 dual_timestamp_get(&m->generators_start_timestamp);
1187 r = manager_run_generators(m);
1188 dual_timestamp_get(&m->generators_finish_timestamp);
07719a21
LP		 1189 if (r < 0)
1190 return r;
1191
a1453343 1192 lookup_paths_reduce(&m->lookup_paths);
fe51822e
LP		 1193 manager_build_unit_path_cache(m);
1194
9f611ad8
LP		 1195 /* If we will deserialize make sure that during enumeration
1196 * this is already known, so we increase the counter here
1197 * already */
1198 if (serialization)
313cefa1 1199 m->n_reloading++;
9f611ad8 1200
a16e1123 1201 /* First, enumerate what we can from all config files */
718db961 1202 dual_timestamp_get(&m->units_load_start_timestamp);
ba64af90 1203 manager_enumerate(m);
718db961 1204 dual_timestamp_get(&m->units_load_finish_timestamp);
a16e1123
LP		 1205
1206 /* Second, deserialize if there is something to deserialize */
1cd974ed
ZJS		 1207 if (serialization)
1208 r = manager_deserialize(m, serialization, fds);
a16e1123 1209
01e10de3
LP		 1210 /* Any fds left? Find some unit which wants them. This is
1211 * useful to allow container managers to pass some file
1212 * descriptors to us pre-initialized. This enables
1213 * socket-based activation of entire containers. */
9ff1a6f1 1214 manager_distribute_fds(m, fds);
01e10de3 1215
d86f9d52
LP		 1216 /* We might have deserialized the notify fd, but if we didn't
1217 * then let's create the bus now */
1cd974ed
ZJS		 1218 q = manager_setup_notify(m);
1219 if (q < 0 && r == 0)
1220 r = q;
d86f9d52 1221
d8fdc620
LP		 1222 q = manager_setup_cgroups_agent(m);
1223 if (q < 0 && r == 0)
1224 r = q;
1225
e3dd987c
LP		 1226 /* We might have deserialized the kdbus control fd, but if we
1227 * didn't, then let's create the bus now. */
1228 manager_setup_kdbus(m);
1229 manager_connect_bus(m, !!serialization);
8f8f05a9 1230 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
e3dd987c 1231
a16e1123 1232 /* Third, fire things up! */
007c6337 1233 manager_coldplug(m);
a16e1123 1234
9f611ad8 1235 if (serialization) {
a7556052 1236 assert(m->n_reloading > 0);
313cefa1 1237 m->n_reloading--;
71445ae7
LP		 1238
1239 /* Let's wait for the UnitNew/JobNew messages being
1240 * sent, before we notify that the reload is
1241 * finished */
1242 m->send_reloading_done = true;
9f611ad8
LP		 1243 }
1244
a16e1123 1245 return r;
f50e0a01
LP		 1246}
1247
4bd29fe5 1248int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) {
e5b5ae50 1249 int r;
7527cb52 1250 Transaction *tr;
e5b5ae50
LP		 1251
1252 assert(m);
1253 assert(type < _JOB_TYPE_MAX);
87f0e418 1254 assert(unit);
e5b5ae50 1255 assert(mode < _JOB_MODE_MAX);
60918275 1256
7358dc02
ZJS		 1257 if (mode == JOB_ISOLATE && type != JOB_START)
1258 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
c497c7a9 1259
7358dc02
ZJS		 1260 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1261 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
2528a7a6 1262
f2341e0a 1263 log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
9f04bd52 1264
c6497ccb 1265 type = job_type_collapse(type, unit);
e0209d83 1266
23ade460 1267 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
7527cb52
MS		 1268 if (!tr)
1269 return -ENOMEM;
11dd41ce 1270
4bd29fe5 1271 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false,
7527cb52 1272 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
b94fbd30 1273 mode == JOB_IGNORE_DEPENDENCIES, e);
7527cb52
MS		 1274 if (r < 0)
1275 goto tr_abort;
c497c7a9 1276
7527cb52
MS		 1277 if (mode == JOB_ISOLATE) {
1278 r = transaction_add_isolate_jobs(tr, m);
1279 if (r < 0)
1280 goto tr_abort;
1281 }
1282
1283 r = transaction_activate(tr, m, mode, e);
1284 if (r < 0)
1285 goto tr_abort;
e5b5ae50 1286
f2341e0a 1287 log_unit_debug(unit,
66870f90
ZJS		 1288 "Enqueued job %s/%s as %u", unit->id,
1289 job_type_to_string(type), (unsigned) tr->anchor_job->id);
f50e0a01 1290
e5b5ae50 1291 if (_ret)
b94fbd30 1292 *_ret = tr->anchor_job;
60918275 1293
7527cb52 1294 transaction_free(tr);
e5b5ae50 1295 return 0;
7527cb52
MS		 1296
1297tr_abort:
1298 transaction_abort(tr);
1299 transaction_free(tr);
1300 return r;
e5b5ae50 1301}
60918275 1302
53f18416 1303int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) {
28247076
LP		 1304 Unit *unit;
1305 int r;
1306
1307 assert(m);
1308 assert(type < _JOB_TYPE_MAX);
1309 assert(name);
1310 assert(mode < _JOB_MODE_MAX);
1311
c3090674
LP		 1312 r = manager_load_unit(m, name, NULL, NULL, &unit);
1313 if (r < 0)
28247076
LP		 1314 return r;
1315
53f18416
LP		 1316 return manager_add_job(m, type, unit, mode, e, ret);
1317}
1318
1319int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) {
4afd3348 1320 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
53f18416
LP		 1321 int r;
1322
1323 assert(m);
1324 assert(type < _JOB_TYPE_MAX);
1325 assert(name);
1326 assert(mode < _JOB_MODE_MAX);
1327
1328 r = manager_add_job_by_name(m, type, name, mode, &error, ret);
1329 if (r < 0)
1330 return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r));
1331
1332 return r;
28247076
LP		 1333}
1334
60918275
LP		 1335Job *manager_get_job(Manager *m, uint32_t id) {
1336 assert(m);
1337
1338 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1339}
1340
87f0e418 1341Unit *manager_get_unit(Manager *m, const char *name) {
60918275
LP		 1342 assert(m);
1343 assert(name);
1344
87f0e418 1345 return hashmap_get(m->units, name);
60918275
LP		 1346}
1347
c1e1601e 1348unsigned manager_dispatch_load_queue(Manager *m) {
595ed347 1349 Unit *u;
c1e1601e 1350 unsigned n = 0;
60918275
LP		 1351
1352 assert(m);
1353
223dabab
LP		 1354 /* Make sure we are not run recursively */
1355 if (m->dispatching_load_queue)
c1e1601e 1356 return 0;
223dabab
LP		 1357
1358 m->dispatching_load_queue = true;
1359
87f0e418 1360 /* Dispatches the load queue. Takes a unit from the queue and
60918275
LP		 1361 * tries to load its data until the queue is empty */
1362
595ed347
MS		 1363 while ((u = m->load_queue)) {
1364 assert(u->in_load_queue);
034c6ed7 1365
595ed347 1366 unit_load(u);
c1e1601e 1367 n++;
60918275
LP		 1368 }
1369
223dabab 1370 m->dispatching_load_queue = false;
c1e1601e 1371 return n;
60918275
LP		 1372}
1373
c2756a68
LP		 1374int manager_load_unit_prepare(
1375 Manager *m,
1376 const char *name,
1377 const char *path,
718db961 1378 sd_bus_error *e,
c2756a68
LP		 1379 Unit **_ret) {
1380
87f0e418 1381 Unit *ret;
7d17cfbc 1382 UnitType t;
60918275
LP		 1383 int r;
1384
1385 assert(m);
9e2f7c11 1386 assert(name || path);
60918275 1387
db06e3b6
LP		 1388 /* This will prepare the unit for loading, but not actually
1389 * load anything from disk. */
0301abf4 1390
718db961
LP		 1391 if (path && !is_path(path))
1392 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
9e2f7c11
LP		 1393
1394 if (!name)
2b6bf07d 1395 name = basename(path);
9e2f7c11 1396
7d17cfbc
MS		 1397 t = unit_name_to_type(name);
1398
5d512d54
LN		 1399 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) {
1400 if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE))
1401 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name);
1402
718db961 1403 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
5d512d54 1404 }
60918275 1405
7d17cfbc
MS		 1406 ret = manager_get_unit(m, name);
1407 if (ret) {
034c6ed7 1408 *_ret = ret;
413d6313 1409 return 1;
034c6ed7 1410 }
60918275 1411
7d17cfbc
MS		 1412 ret = unit_new(m, unit_vtable[t]->object_size);
1413 if (!ret)
60918275
LP		 1414 return -ENOMEM;
1415
7d17cfbc 1416 if (path) {
ac155bb8
MS		 1417 ret->fragment_path = strdup(path);
1418 if (!ret->fragment_path) {
0301abf4
LP		 1419 unit_free(ret);
1420 return -ENOMEM;
1421 }
7d17cfbc 1422 }
0301abf4 1423
1058cbf2
ZJS		 1424 r = unit_add_name(ret, name);
1425 if (r < 0) {
87f0e418 1426 unit_free(ret);
1ffba6fe 1427 return r;
60918275
LP		 1428 }
1429
87f0e418 1430 unit_add_to_load_queue(ret);
c1e1601e 1431 unit_add_to_dbus_queue(ret);
949061f0 1432 unit_add_to_gc_queue(ret);
c1e1601e 1433
db06e3b6
LP		 1434 if (_ret)
1435 *_ret = ret;
1436
1437 return 0;
1438}
1439
c2756a68
LP		 1440int manager_load_unit(
1441 Manager *m,
1442 const char *name,
1443 const char *path,
718db961 1444 sd_bus_error *e,
c2756a68
LP		 1445 Unit **_ret) {
1446
db06e3b6
LP		 1447 int r;
1448
1449 assert(m);
1450
1451 /* This will load the service information files, but not actually
1452 * start any services or anything. */
1453
c3090674
LP		 1454 r = manager_load_unit_prepare(m, name, path, e, _ret);
1455 if (r != 0)
db06e3b6
LP		 1456 return r;
1457
f50e0a01 1458 manager_dispatch_load_queue(m);
60918275 1459
9e2f7c11 1460 if (_ret)
413d6313 1461 *_ret = unit_follow_merge(*_ret);
9e2f7c11 1462
60918275
LP		 1463 return 0;
1464}
a66d02c3 1465
cea8e32e 1466void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1467 Iterator i;
a66d02c3
LP		 1468 Job *j;
1469
1470 assert(s);
1471 assert(f);
1472
034c6ed7 1473 HASHMAP_FOREACH(j, s->jobs, i)
cea8e32e 1474 job_dump(j, f, prefix);
a66d02c3
LP		 1475}
1476
87f0e418 1477void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1478 Iterator i;
87f0e418 1479 Unit *u;
11dd41ce 1480 const char *t;
a66d02c3
LP		 1481
1482 assert(s);
1483 assert(f);
1484
87f0e418 1485 HASHMAP_FOREACH_KEY(u, t, s->units, i)
ac155bb8 1486 if (u->id == t)
87f0e418 1487 unit_dump(u, f, prefix);
a66d02c3 1488}
7fad411c
LP		 1489
1490void manager_clear_jobs(Manager *m) {
1491 Job *j;
1492
1493 assert(m);
1494
7fad411c 1495 while ((j = hashmap_first(m->jobs)))
5273510e
MS		 1496 /* No need to recurse. We're cancelling all jobs. */
1497 job_finish_and_invalidate(j, JOB_CANCELED, false);
7fad411c 1498}
83c60c9f 1499
752b5905
LP		 1500static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1501 Manager *m = userdata;
83c60c9f 1502 Job *j;
034c6ed7 1503
752b5905
LP		 1504 assert(source);
1505 assert(m);
9152c765 1506
034c6ed7 1507 while ((j = m->run_queue)) {
ac1135be 1508 assert(j->installed);
034c6ed7
LP		 1509 assert(j->in_run_queue);
1510
1511 job_run_and_invalidate(j);
9152c765 1512 }
034c6ed7 1513
a0b64226 1514 if (m->n_running_jobs > 0)
03b717a3
MS		 1515 manager_watch_jobs_in_progress(m);
1516
31a7eb86
ZJS		 1517 if (m->n_on_console > 0)
1518 manager_watch_idle_pipe(m);
1519
752b5905 1520 return 1;
c1e1601e
LP		 1521}
1522
9588bc32 1523static unsigned manager_dispatch_dbus_queue(Manager *m) {
c1e1601e 1524 Job *j;
595ed347 1525 Unit *u;
c1e1601e
LP		 1526 unsigned n = 0;
1527
1528 assert(m);
1529
1530 if (m->dispatching_dbus_queue)
1531 return 0;
1532
1533 m->dispatching_dbus_queue = true;
1534
595ed347
MS		 1535 while ((u = m->dbus_unit_queue)) {
1536 assert(u->in_dbus_queue);
c1e1601e 1537
595ed347 1538 bus_unit_send_change_signal(u);
c1e1601e
LP		 1539 n++;
1540 }
1541
1542 while ((j = m->dbus_job_queue)) {
1543 assert(j->in_dbus_queue);
1544
1545 bus_job_send_change_signal(j);
1546 n++;
1547 }
1548
1549 m->dispatching_dbus_queue = false;
71445ae7
LP		 1550
1551 if (m->send_reloading_done) {
1552 m->send_reloading_done = false;
1553
718db961 1554 bus_manager_send_reloading(m, false);
71445ae7
LP		 1555 }
1556
718db961
LP		 1557 if (m->queued_message)
1558 bus_send_queued_message(m);
1559
c1e1601e 1560 return n;
9152c765
LP		 1561}
1562
d8fdc620
LP		 1563static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1564 Manager *m = userdata;
1565 char buf[PATH_MAX+1];
1566 ssize_t n;
1567
1568 n = recv(fd, buf, sizeof(buf), 0);
1569 if (n < 0)
1570 return log_error_errno(errno, "Failed to read cgroups agent message: %m");
1571 if (n == 0) {
1572 log_error("Got zero-length cgroups agent message, ignoring.");
1573 return 0;
1574 }
1575 if ((size_t) n >= sizeof(buf)) {
1576 log_error("Got overly long cgroups agent message, ignoring.");
1577 return 0;
1578 }
1579
1580 if (memchr(buf, 0, n)) {
1581 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
1582 return 0;
1583 }
1584 buf[n] = 0;
1585
1586 manager_notify_cgroup_empty(m, buf);
1587 bus_forward_agent_released(m, buf);
1588
1589 return 0;
1590}
1591
96d66d89 1592static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) {
5ba6985b
LP		 1593 _cleanup_strv_free_ char **tags = NULL;
1594
1595 assert(m);
1596 assert(u);
1597 assert(buf);
1598 assert(n > 0);
1599
1600 tags = strv_split(buf, "\n\r");
1601 if (!tags) {
1602 log_oom();
1603 return;
1604 }
1605
5ba6985b 1606 if (UNIT_VTABLE(u)->notify_message)
a354329f 1607 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
34959677
TG		 1608 else
1609 log_unit_debug(u, "Got notification message for unit. Ignoring.");
5ba6985b
LP		 1610}
1611
718db961 1612static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
b215b0ed 1613 _cleanup_fdset_free_ FDSet *fds = NULL;
718db961 1614 Manager *m = userdata;
b215b0ed
DH		 1615
1616 char buf[NOTIFY_BUFFER_MAX+1];
1617 struct iovec iovec = {
1618 .iov_base = buf,
1619 .iov_len = sizeof(buf)-1,
1620 };
1621 union {
1622 struct cmsghdr cmsghdr;
1623 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1624 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
1625 } control = {};
1626 struct msghdr msghdr = {
1627 .msg_iov = &iovec,
1628 .msg_iovlen = 1,
1629 .msg_control = &control,
1630 .msg_controllen = sizeof(control),
1631 };
1632
1633 struct cmsghdr *cmsg;
1634 struct ucred *ucred = NULL;
1635 bool found = false;
1636 Unit *u1, *u2, *u3;
1637 int r, *fd_array = NULL;
1638 unsigned n_fds = 0;
8c47c732
LP		 1639 ssize_t n;
1640
1641 assert(m);
718db961
LP		 1642 assert(m->notify_fd == fd);
1643
1644 if (revents != EPOLLIN) {
1645 log_warning("Got unexpected poll event for notify fd.");
1646 return 0;
1647 }
8c47c732 1648
b215b0ed
DH		 1649 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1650 if (n < 0) {
1651 if (errno == EAGAIN || errno == EINTR)
1652 return 0;
8c47c732 1653
b215b0ed
DH		 1654 return -errno;
1655 }
a354329f 1656
b215b0ed
DH		 1657 CMSG_FOREACH(cmsg, &msghdr) {
1658 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
a354329f 1659
b215b0ed
DH		 1660 fd_array = (int*) CMSG_DATA(cmsg);
1661 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
a354329f 1662
b215b0ed
DH		 1663 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1664 cmsg->cmsg_type == SCM_CREDENTIALS &&
1665 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
a354329f 1666
b215b0ed 1667 ucred = (struct ucred*) CMSG_DATA(cmsg);
a354329f 1668 }
b215b0ed 1669 }
a354329f 1670
b215b0ed
DH		 1671 if (n_fds > 0) {
1672 assert(fd_array);
a354329f 1673
b215b0ed
DH		 1674 r = fdset_new_array(&fds, fd_array, n_fds);
1675 if (r < 0) {
1676 close_many(fd_array, n_fds);
1677 return log_oom();
a354329f 1678 }
b215b0ed 1679 }
8c47c732 1680
b215b0ed
DH		 1681 if (!ucred || ucred->pid <= 0) {
1682 log_warning("Received notify message without valid credentials. Ignoring.");
1683 return 0;
1684 }
8c47c732 1685
b215b0ed
DH		 1686 if ((size_t) n >= sizeof(buf)) {
1687 log_warning("Received notify message exceeded maximum size. Ignoring.");
1688 return 0;
1689 }
8c47c732 1690
b215b0ed 1691 buf[n] = 0;
8c47c732 1692
b215b0ed
DH		 1693 /* Notify every unit that might be interested, but try
1694 * to avoid notifying the same one multiple times. */
1695 u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
1696 if (u1) {
1697 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
1698 found = true;
1699 }
5ba6985b 1700
b215b0ed
DH		 1701 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
1702 if (u2 && u2 != u1) {
1703 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
1704 found = true;
1705 }
5ba6985b 1706
b215b0ed
DH		 1707 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
1708 if (u3 && u3 != u2 && u3 != u1) {
1709 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
1710 found = true;
1711 }
8c47c732 1712
b215b0ed
DH		 1713 if (!found)
1714 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
a354329f 1715
b215b0ed
DH		 1716 if (fdset_size(fds) > 0)
1717 log_warning("Got auxiliary fds with notification message, closing all.");
8c47c732
LP		 1718
1719 return 0;
1720}
1721
96d66d89 1722static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
5ba6985b
LP		 1723 assert(m);
1724 assert(u);
1725 assert(si);
1726
f2341e0a 1727 log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
5ba6985b
LP		 1728
1729 unit_unwatch_pid(u, si->si_pid);
e57051f5
TH		 1730
1731 if (UNIT_VTABLE(u)->sigchld_event)
1732 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
5ba6985b
LP		 1733}
1734
034c6ed7 1735static int manager_dispatch_sigchld(Manager *m) {
9152c765
LP		 1736 assert(m);
1737
1738 for (;;) {
b92bea5d 1739 siginfo_t si = {};
9152c765 1740
4112df16
LP		 1741 /* First we call waitd() for a PID and do not reap the
1742 * zombie. That way we can still access /proc/$PID for
1743 * it while it is a zombie. */
1744 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
acbb0225
LP		 1745
1746 if (errno == ECHILD)
1747 break;
1748
4112df16
LP		 1749 if (errno == EINTR)
1750 continue;
1751
9152c765 1752 return -errno;
acbb0225 1753 }
9152c765 1754
4112df16 1755 if (si.si_pid <= 0)
9152c765
LP		 1756 break;
1757
15d5d9d9 1758 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
7fd1b19b 1759 _cleanup_free_ char *name = NULL;
70af4d17 1760 Unit *u1, *u2, *u3;
4112df16 1761
87d2c1ff 1762 get_process_comm(si.si_pid, &name);
4112df16 1763
5ba6985b
LP		 1764 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1765 si.si_pid, strna(name),
1766 sigchld_code_to_string(si.si_code),
1767 si.si_status,
1768 strna(si.si_code == CLD_EXITED
1769 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1770 : signal_to_string(si.si_status)));
1771
1772 /* And now figure out the unit this belongs
1773 * to, it might be multiple... */
b3ac818b 1774 u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
70af4d17
LP		 1775 if (u1)
1776 invoke_sigchld_event(m, u1, &si);
fea72cc0 1777 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1778 if (u2 && u2 != u1)
1779 invoke_sigchld_event(m, u2, &si);
fea72cc0 1780 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1781 if (u3 && u3 != u2 && u3 != u1)
1782 invoke_sigchld_event(m, u3, &si);
5ba6985b 1783 }
8c47c732 1784
4112df16
LP		 1785 /* And now, we actually reap the zombie. */
1786 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1787 if (errno == EINTR)
1788 continue;
1789
1790 return -errno;
1791 }
9152c765
LP		 1792 }
1793
1794 return 0;
1795}
1796
7d793605 1797static int manager_start_target(Manager *m, const char *name, JobMode mode) {
4afd3348 1798 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
28247076 1799 int r;
398ef8ba 1800
f2341e0a 1801 log_debug("Activating special unit %s", name);
1e001f52 1802
4bd29fe5 1803 r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL);
bd0af849 1804 if (r < 0)
f2341e0a 1805 log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
a1b256b0
LP		 1806
1807 return r;
28247076
LP		 1808}
1809
718db961
LP		 1810static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1811 Manager *m = userdata;
9152c765
LP		 1812 ssize_t n;
1813 struct signalfd_siginfo sfsi;
1814 bool sigchld = false;
dacd6cee 1815 int r;
9152c765
LP		 1816
1817 assert(m);
718db961
LP		 1818 assert(m->signal_fd == fd);
1819
1820 if (revents != EPOLLIN) {
1821 log_warning("Got unexpected events from signal file descriptor.");
1822 return 0;
1823 }
9152c765
LP		 1824
1825 for (;;) {
718db961 1826 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
57cb4adf 1827 if (n != sizeof(sfsi)) {
9152c765
LP		 1828
1829 if (n >= 0)
1830 return -EIO;
1831
63090775 1832 if (errno == EINTR || errno == EAGAIN)
acbb0225 1833 break;
9152c765
LP		 1834
1835 return -errno;
1836 }
1837
4daf54a8 1838 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
463d0d15 1839 (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m))
4daf54a8
ZJS		 1840 ? LOG_DEBUG : LOG_INFO,
1841 &sfsi);
1e001f52 1842
b9cd2ec1
LP		 1843 switch (sfsi.ssi_signo) {
1844
4112df16 1845 case SIGCHLD:
9152c765 1846 sigchld = true;
b9cd2ec1
LP		 1847 break;
1848
6632c602 1849 case SIGTERM:
463d0d15 1850 if (MANAGER_IS_SYSTEM(m)) {
db06e3b6
LP		 1851 /* This is for compatibility with the
1852 * original sysvinit */
e11dc4a2 1853 m->exit_code = MANAGER_REEXECUTE;
a1b256b0
LP		 1854 break;
1855 }
84e9af1e 1856
a1b256b0 1857 /* Fall through */
e11dc4a2
LP		 1858
1859 case SIGINT:
463d0d15 1860 if (MANAGER_IS_SYSTEM(m)) {
2e5c94b9 1861
d1f6b1b4
LP		 1862 /* If the user presses C-A-D more than
1863 * 7 times within 2s, we reboot
2e5c94b9
LP		 1864 * immediately. */
1865
1866 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1867 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1868 else {
1869 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
a626df3e 1870 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
2e5c94b9
LP		 1871 m->exit_code = MANAGER_REBOOT;
1872 }
1873
84e9af1e
LP		 1874 break;
1875 }
1876
a1b256b0 1877 /* Run the exit target if there is one, if not, just exit. */
0003d1ab 1878 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
a1b256b0
LP		 1879 m->exit_code = MANAGER_EXIT;
1880 return 0;
1881 }
1882
1883 break;
84e9af1e 1884
28247076 1885 case SIGWINCH:
463d0d15 1886 if (MANAGER_IS_SYSTEM(m))
7d793605 1887 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
84e9af1e 1888
28247076
LP		 1889 /* This is a nop on non-init */
1890 break;
84e9af1e 1891
28247076 1892 case SIGPWR:
463d0d15 1893 if (MANAGER_IS_SYSTEM(m))
7d793605 1894 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
84e9af1e 1895
28247076 1896 /* This is a nop on non-init */
84e9af1e 1897 break;
6632c602 1898
1005d14f 1899 case SIGUSR1: {
57ee42ce
LP		 1900 Unit *u;
1901
1902 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1903
1904 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1905 log_info("Trying to reconnect to bus...");
3996fbe2 1906 bus_init(m, true);
57ee42ce
LP		 1907 }
1908
1909 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1910 log_info("Loading D-Bus service...");
7d793605 1911 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
57ee42ce
LP		 1912 }
1913
1914 break;
1915 }
1916
2149e37c 1917 case SIGUSR2: {
718db961
LP		 1918 _cleanup_free_ char *dump = NULL;
1919 _cleanup_fclose_ FILE *f = NULL;
2149e37c
LP		 1920 size_t size;
1921
718db961
LP		 1922 f = open_memstream(&dump, &size);
1923 if (!f) {
dacd6cee 1924 log_warning_errno(errno, "Failed to allocate memory stream: %m");
2149e37c
LP		 1925 break;
1926 }
1927
1928 manager_dump_units(m, f, "\t");
1929 manager_dump_jobs(m, f, "\t");
1930
dacd6cee
LP		 1931 r = fflush_and_check(f);
1932 if (r < 0) {
1933 log_warning_errno(r, "Failed to write status stream: %m");
b2cdc666
DM		 1934 break;
1935 }
1936
2149e37c 1937 log_dump(LOG_INFO, dump);
1005d14f 1938 break;
2149e37c 1939 }
1005d14f 1940
a16e1123
LP		 1941 case SIGHUP:
1942 m->exit_code = MANAGER_RELOAD;
1943 break;
1944
7d793605 1945 default: {
253ee27a 1946
0003d1ab
LP		 1947 /* Starting SIGRTMIN+0 */
1948 static const char * const target_table[] = {
7d793605
LP		 1949 [0] = SPECIAL_DEFAULT_TARGET,
1950 [1] = SPECIAL_RESCUE_TARGET,
f057408c 1951 [2] = SPECIAL_EMERGENCY_TARGET,
7d793605
LP		 1952 [3] = SPECIAL_HALT_TARGET,
1953 [4] = SPECIAL_POWEROFF_TARGET,
0003d1ab
LP		 1954 [5] = SPECIAL_REBOOT_TARGET,
1955 [6] = SPECIAL_KEXEC_TARGET
1956 };
1957
1958 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1959 static const ManagerExitCode code_table[] = {
1960 [0] = MANAGER_HALT,
1961 [1] = MANAGER_POWEROFF,
1962 [2] = MANAGER_REBOOT,
1963 [3] = MANAGER_KEXEC
7d793605
LP		 1964 };
1965
1966 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
0003d1ab 1967 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
764e9b5f
MS		 1968 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1969 manager_start_target(m, target_table[idx],
1970 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
7d793605
LP		 1971 break;
1972 }
1973
0003d1ab
LP		 1974 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1975 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1976 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1977 break;
1978 }
1979
0658666b
LP		 1980 switch (sfsi.ssi_signo - SIGRTMIN) {
1981
1982 case 20:
d450b6f2 1983 manager_set_show_status(m, SHOW_STATUS_YES);
0658666b
LP		 1984 break;
1985
1986 case 21:
d450b6f2 1987 manager_set_show_status(m, SHOW_STATUS_NO);
0658666b
LP		 1988 break;
1989
253ee27a
LP		 1990 case 22:
1991 log_set_max_level(LOG_DEBUG);
4cee3a78 1992 log_info("Setting log level to debug.");
253ee27a
LP		 1993 break;
1994
1995 case 23:
1996 log_set_max_level(LOG_INFO);
4cee3a78 1997 log_info("Setting log level to info.");
253ee27a
LP		 1998 break;
1999
600b704e 2000 case 24:
463d0d15 2001 if (MANAGER_IS_USER(m)) {
600b704e
LP		 2002 m->exit_code = MANAGER_EXIT;
2003 return 0;
2004 }
2005
2006 /* This is a nop on init */
2007 break;
2008
4cfa2c99 2009 case 26:
c1dc6153 2010 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
4cfa2c99
LP		 2011 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2012 log_notice("Setting log target to journal-or-kmsg.");
2013 break;
2014
253ee27a
LP		 2015 case 27:
2016 log_set_target(LOG_TARGET_CONSOLE);
2017 log_notice("Setting log target to console.");
2018 break;
2019
2020 case 28:
2021 log_set_target(LOG_TARGET_KMSG);
2022 log_notice("Setting log target to kmsg.");
2023 break;
2024
0658666b 2025 default:
4e240ab0 2026 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
0658666b 2027 }
b9cd2ec1 2028 }
7d793605 2029 }
9152c765
LP		 2030 }
2031
2032 if (sigchld)
7b77ed8c 2033 manager_dispatch_sigchld(m);
034c6ed7
LP		 2034
2035 return 0;
2036}
2037
718db961
LP		 2038static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2039 Manager *m = userdata;
2040 Iterator i;
2041 Unit *u;
034c6ed7
LP		 2042
2043 assert(m);
718db961 2044 assert(m->time_change_fd == fd);
034c6ed7 2045
718db961 2046 log_struct(LOG_INFO,
e2cc6eca
LP		 2047 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
2048 LOG_MESSAGE("Time has been changed"),
718db961 2049 NULL);
034c6ed7 2050
718db961
LP		 2051 /* Restart the watch */
2052 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
03e334a1 2053 m->time_change_fd = safe_close(m->time_change_fd);
ef734fd6 2054
718db961 2055 manager_setup_time_change(m);
4e434314 2056
718db961
LP		 2057 HASHMAP_FOREACH(u, m->units, i)
2058 if (UNIT_VTABLE(u)->time_change)
2059 UNIT_VTABLE(u)->time_change(u);
ea430986 2060
718db961
LP		 2061 return 0;
2062}
ea430986 2063
718db961
LP		 2064static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2065 Manager *m = userdata;
8742514c 2066
718db961
LP		 2067 assert(m);
2068 assert(m->idle_pipe[2] == fd);
8742514c 2069
718db961 2070 m->no_console_output = m->n_on_console > 0;
03b717a3 2071
718db961 2072 manager_close_idle_pipe(m);
03b717a3 2073
718db961
LP		 2074 return 0;
2075}
31a7eb86 2076
718db961
LP		 2077static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
2078 Manager *m = userdata;
fd08a840
ZJS		 2079 int r;
2080 uint64_t next;
31a7eb86 2081
718db961 2082 assert(m);
fd08a840 2083 assert(source);
9152c765 2084
718db961 2085 manager_print_jobs_in_progress(m);
fd08a840
ZJS		 2086
2087 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
2088 r = sd_event_source_set_time(source, next);
2089 if (r < 0)
2090 return r;
2091
2092 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
9152c765
LP		 2093}
2094
2095int manager_loop(Manager *m) {
2096 int r;
9152c765 2097
fac9f8df 2098 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
ea430986 2099
9152c765 2100 assert(m);
f755e3b7 2101 m->exit_code = MANAGER_OK;
9152c765 2102
fe51822e 2103 /* Release the path cache */
97044145 2104 m->unit_path_cache = set_free_free(m->unit_path_cache);
fe51822e 2105
b0c918b9
LP		 2106 manager_check_finished(m);
2107
a4312405 2108 /* There might still be some zombies hanging around from
f3669545 2109 * before we were exec()'ed. Let's reap them. */
e96d6be7
LP		 2110 r = manager_dispatch_sigchld(m);
2111 if (r < 0)
a4312405
LP		 2112 return r;
2113
f755e3b7 2114 while (m->exit_code == MANAGER_OK) {
718db961 2115 usec_t wait_usec;
9152c765 2116
463d0d15 2117 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m))
e96d6be7
LP		 2118 watchdog_ping();
2119
ea430986
LP		 2120 if (!ratelimit_test(&rl)) {
2121 /* Yay, something is going seriously wrong, pause a little */
2122 log_warning("Looping too fast. Throttling execution a little.");
2123 sleep(1);
2124 }
2125
37a8e683 2126 if (manager_dispatch_load_queue(m) > 0)
23a177ef
LP		 2127 continue;
2128
cf1265e1 2129 if (manager_dispatch_gc_queue(m) > 0)
701cc384
LP		 2130 continue;
2131
cf1265e1 2132 if (manager_dispatch_cleanup_queue(m) > 0)
c1e1601e 2133 continue;
034c6ed7 2134
cf1265e1 2135 if (manager_dispatch_cgroup_queue(m) > 0)
c1e1601e
LP		 2136 continue;
2137
c1e1601e 2138 if (manager_dispatch_dbus_queue(m) > 0)
ea430986 2139 continue;
ea430986 2140
c757a65b 2141 /* Sleep for half the watchdog time */
463d0d15 2142 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) {
718db961
LP		 2143 wait_usec = m->runtime_watchdog / 2;
2144 if (wait_usec <= 0)
2145 wait_usec = 1;
c757a65b 2146 } else
3a43da28 2147 wait_usec = USEC_INFINITY;
9152c765 2148
718db961 2149 r = sd_event_run(m->event, wait_usec);
23bbb0de
MS		 2150 if (r < 0)
2151 return log_error_errno(r, "Failed to run event loop: %m");
a16e1123 2152 }
957ca890 2153
a16e1123 2154 return m->exit_code;
83c60c9f 2155}
ea430986 2156
718db961 2157int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
ede3a796 2158 _cleanup_free_ char *n = NULL;
ea430986 2159 Unit *u;
80fbf05e 2160 int r;
ea430986
LP		 2161
2162 assert(m);
2163 assert(s);
2164 assert(_u);
2165
ede3a796
LP		 2166 r = unit_name_from_dbus_path(s, &n);
2167 if (r < 0)
2168 return r;
ea430986 2169
80fbf05e 2170 r = manager_load_unit(m, n, NULL, e, &u);
80fbf05e
MS		 2171 if (r < 0)
2172 return r;
ea430986
LP		 2173
2174 *_u = u;
2175
2176 return 0;
2177}
86fbf370
LP		 2178
2179int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
718db961 2180 const char *p;
86fbf370 2181 unsigned id;
718db961 2182 Job *j;
86fbf370
LP		 2183 int r;
2184
2185 assert(m);
2186 assert(s);
2187 assert(_j);
2188
718db961
LP		 2189 p = startswith(s, "/org/freedesktop/systemd1/job/");
2190 if (!p)
86fbf370
LP		 2191 return -EINVAL;
2192
718db961 2193 r = safe_atou(p, &id);
8742514c 2194 if (r < 0)
86fbf370
LP		 2195 return r;
2196
8742514c
LP		 2197 j = manager_get_job(m, id);
2198 if (!j)
86fbf370
LP		 2199 return -ENOENT;
2200
2201 *_j = j;
2202
2203 return 0;
2204}
dfcd764e 2205
4927fcae 2206void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
e537352b 2207
4927fcae 2208#ifdef HAVE_AUDIT
2ba11090 2209 _cleanup_free_ char *p = NULL;
0aa281df 2210 const char *msg;
7410616c 2211 int audit_fd, r;
e537352b 2212
463d0d15 2213 if (!MANAGER_IS_SYSTEM(m))
a1a078ee
LP		 2214 return;
2215
c1165f82
LP		 2216 audit_fd = get_audit_fd();
2217 if (audit_fd < 0)
e537352b
LP		 2218 return;
2219
bbd3a7ba
LP		 2220 /* Don't generate audit events if the service was already
2221 * started and we're just deserializing */
2c289ea8 2222 if (MANAGER_IS_RELOADING(m))
bbd3a7ba
LP		 2223 return;
2224
ac155bb8 2225 if (u->type != UNIT_SERVICE)
f1dd0c3f
LP		 2226 return;
2227
7410616c
LP		 2228 r = unit_name_to_prefix_and_instance(u->id, &p);
2229 if (r < 0) {
2230 log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
e537352b
LP		 2231 return;
2232 }
2233
63c372cb 2234 msg = strjoina("unit=", p);
0aa281df
LP		 2235 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2236 if (errno == EPERM)
391ade86 2237 /* We aren't allowed to send audit messages?
44785992 2238 * Then let's not retry again. */
c1165f82 2239 close_audit_fd();
0aa281df 2240 else
56f64d95 2241 log_warning_errno(errno, "Failed to send audit message: %m");
391ade86 2242 }
4927fcae 2243#endif
e537352b 2244
e537352b
LP		 2245}
2246
e983b760 2247void manager_send_unit_plymouth(Manager *m, Unit *u) {
fc2fffe7 2248 static const union sockaddr_union sa = PLYMOUTH_SOCKET;
2ba11090
ZJS		 2249 _cleanup_free_ char *message = NULL;
2250 _cleanup_close_ int fd = -1;
fc2fffe7 2251 int n = 0;
e983b760
LP		 2252
2253 /* Don't generate plymouth events if the service was already
2254 * started and we're just deserializing */
2c289ea8 2255 if (MANAGER_IS_RELOADING(m))
e983b760
LP		 2256 return;
2257
463d0d15 2258 if (!MANAGER_IS_SYSTEM(m))
e983b760
LP		 2259 return;
2260
75f86906 2261 if (detect_container() > 0)
3772995a
LP		 2262 return;
2263
ac155bb8
MS		 2264 if (u->type != UNIT_SERVICE &&
2265 u->type != UNIT_MOUNT &&
2266 u->type != UNIT_SWAP)
e983b760
LP		 2267 return;
2268
2269 /* We set SOCK_NONBLOCK here so that we rather drop the
2270 * message then wait for plymouth */
e62d8c39
ZJS		 2271 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2272 if (fd < 0) {
56f64d95 2273 log_error_errno(errno, "socket() failed: %m");
e983b760
LP		 2274 return;
2275 }
2276
fc2fffe7 2277 if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) {
e983b760 2278
2ba11090 2279 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2280 log_error_errno(errno, "connect() failed: %m");
2ba11090 2281 return;
e983b760
LP		 2282 }
2283
ac155bb8 2284 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
0d0f0c50 2285 log_oom();
2ba11090 2286 return;
e983b760
LP		 2287 }
2288
2289 errno = 0;
2ba11090
ZJS		 2290 if (write(fd, message, n + 1) != n + 1)
2291 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2292 log_error_errno(errno, "Failed to write Plymouth message: %m");
e983b760
LP		 2293}
2294
d8d5ab98 2295int manager_open_serialization(Manager *m, FILE **_f) {
8e33886e 2296 const char *path;
df28bc08 2297 int fd = -1;
a16e1123
LP		 2298 FILE *f;
2299
2300 assert(_f);
2301
463d0d15 2302 path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp";
03532f0a 2303 fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
d86f9d52 2304 if (fd < 0)
a16e1123 2305 return -errno;
a16e1123 2306
a16e1123 2307 log_debug("Serializing state to %s", path);
a16e1123 2308
01e10de3 2309 f = fdopen(fd, "w+");
d86f9d52 2310 if (!f) {
03e334a1 2311 safe_close(fd);
a16e1123 2312 return -errno;
d86f9d52 2313 }
a16e1123
LP		 2314
2315 *_f = f;
2316
2317 return 0;
2318}
2319
b3680f49 2320int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
a16e1123
LP		 2321 Iterator i;
2322 Unit *u;
2323 const char *t;
4a9fd066 2324 char **e;
a16e1123
LP		 2325 int r;
2326
2327 assert(m);
2328 assert(f);
2329 assert(fds);
2330
313cefa1 2331 m->n_reloading++;
38c52d46 2332
1fa2f38f 2333 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
01d67b43 2334 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
33c5fae9
LP		 2335 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2336 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
01d67b43 2337
915b3753 2338 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
915b3753 2339 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
718db961 2340 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
e9ddabc2 2341 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
f38ed060 2342
26a1efdf 2343 if (!in_initrd()) {
915b3753 2344 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
f38ed060 2345 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
718db961
LP		 2346 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2347 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2348 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2349 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2350 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2351 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
f38ed060 2352 }
47a483a1 2353
b3680f49
HH		 2354 if (!switching_root) {
2355 STRV_FOREACH(e, m->environment) {
2356 _cleanup_free_ char *ce;
4a9fd066 2357
b3680f49 2358 ce = cescape(*e);
e3dd987c
LP		 2359 if (!ce)
2360 return -ENOMEM;
2361
2362 fprintf(f, "env=%s\n", *e);
b3680f49 2363 }
4a9fd066
OS		 2364 }
2365
d86f9d52
LP		 2366 if (m->notify_fd >= 0) {
2367 int copy;
2368
2369 copy = fdset_put_dup(fds, m->notify_fd);
2370 if (copy < 0)
2371 return copy;
2372
2373 fprintf(f, "notify-fd=%i\n", copy);
2374 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2375 }
2376
d8fdc620
LP		 2377 if (m->cgroups_agent_fd >= 0) {
2378 int copy;
2379
2380 copy = fdset_put_dup(fds, m->cgroups_agent_fd);
2381 if (copy < 0)
2382 return copy;
2383
2384 fprintf(f, "cgroups-agent-fd=%i\n", copy);
2385 }
2386
e3dd987c
LP		 2387 if (m->kdbus_fd >= 0) {
2388 int copy;
2389
2390 copy = fdset_put_dup(fds, m->kdbus_fd);
2391 if (copy < 0)
2392 return copy;
2393
2394 fprintf(f, "kdbus-fd=%i\n", copy);
2395 }
2396
8f8f05a9 2397 bus_track_serialize(m->subscribed, f);
6fa48533 2398
f2382a94
LP		 2399 fputc('\n', f);
2400
a16e1123 2401 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
ac155bb8 2402 if (u->id != t)
a16e1123
LP		 2403 continue;
2404
a16e1123 2405 /* Start marker */
ac155bb8 2406 fputs(u->id, f);
a16e1123
LP		 2407 fputc('\n', f);
2408
6fa48533
LP		 2409 r = unit_serialize(u, f, fds, !switching_root);
2410 if (r < 0) {
313cefa1 2411 m->n_reloading--;
a16e1123 2412 return r;
38c52d46 2413 }
a16e1123
LP		 2414 }
2415
a7556052 2416 assert(m->n_reloading > 0);
313cefa1 2417 m->n_reloading--;
38c52d46 2418
a16e1123
LP		 2419 if (ferror(f))
2420 return -EIO;
2421
b23de6af
LP		 2422 r = bus_fdset_add_all(m, fds);
2423 if (r < 0)
2424 return r;
2425
a16e1123
LP		 2426 return 0;
2427}
2428
2429int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2430 int r = 0;
2431
2432 assert(m);
2433 assert(f);
2434
2435 log_debug("Deserializing state...");
2436
313cefa1 2437 m->n_reloading++;
82c64bf5 2438
10f8e83c 2439 for (;;) {
20c03b7b 2440 char line[LINE_MAX], *l;
10f8e83c
LP		 2441
2442 if (!fgets(line, sizeof(line), f)) {
2443 if (feof(f))
2444 r = 0;
2445 else
2446 r = -errno;
2447
2448 goto finish;
2449 }
2450
2451 char_array_0(line);
2452 l = strstrip(line);
2453
2454 if (l[0] == 0)
2455 break;
2456
01d67b43
LP		 2457 if (startswith(l, "current-job-id=")) {
2458 uint32_t id;
2459
2460 if (safe_atou32(l+15, &id) < 0)
e5035a27 2461 log_debug("Failed to parse current job id value %s", l+15);
01d67b43
LP		 2462 else
2463 m->current_job_id = MAX(m->current_job_id, id);
718db961 2464
33c5fae9
LP		 2465 } else if (startswith(l, "n-installed-jobs=")) {
2466 uint32_t n;
2467
2468 if (safe_atou32(l+17, &n) < 0)
e5035a27 2469 log_debug("Failed to parse installed jobs counter %s", l+17);
33c5fae9
LP		 2470 else
2471 m->n_installed_jobs += n;
718db961 2472
33c5fae9
LP		 2473 } else if (startswith(l, "n-failed-jobs=")) {
2474 uint32_t n;
2475
2476 if (safe_atou32(l+14, &n) < 0)
e5035a27 2477 log_debug("Failed to parse failed jobs counter %s", l+14);
33c5fae9
LP		 2478 else
2479 m->n_failed_jobs += n;
718db961 2480
01d67b43
LP		 2481 } else if (startswith(l, "taint-usr=")) {
2482 int b;
2483
e3dd987c
LP		 2484 b = parse_boolean(l+10);
2485 if (b < 0)
e5035a27 2486 log_debug("Failed to parse taint /usr flag %s", l+10);
01d67b43
LP		 2487 else
2488 m->taint_usr = m->taint_usr || b;
718db961 2489
915b3753
LP		 2490 } else if (startswith(l, "firmware-timestamp="))
2491 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2492 else if (startswith(l, "loader-timestamp="))
2493 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2494 else if (startswith(l, "kernel-timestamp="))
2495 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2496 else if (startswith(l, "initrd-timestamp="))
e9ddabc2 2497 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
915b3753
LP		 2498 else if (startswith(l, "userspace-timestamp="))
2499 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
10717a1a 2500 else if (startswith(l, "finish-timestamp="))
799fd0fd 2501 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
718db961
LP		 2502 else if (startswith(l, "security-start-timestamp="))
2503 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2504 else if (startswith(l, "security-finish-timestamp="))
2505 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2506 else if (startswith(l, "generators-start-timestamp="))
2507 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2508 else if (startswith(l, "generators-finish-timestamp="))
2509 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2510 else if (startswith(l, "units-load-start-timestamp="))
2511 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2512 else if (startswith(l, "units-load-finish-timestamp="))
2513 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
4a9fd066
OS		 2514 else if (startswith(l, "env=")) {
2515 _cleanup_free_ char *uce = NULL;
2516 char **e;
2517
527b7a42
LP		 2518 r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
2519 if (r < 0)
4a9fd066 2520 goto finish;
4a9fd066
OS		 2521
2522 e = strv_env_set(m->environment, uce);
2523 if (!e) {
2524 r = -ENOMEM;
2525 goto finish;
2526 }
2527
2528 strv_free(m->environment);
2529 m->environment = e;
e3dd987c 2530
d86f9d52
LP		 2531 } else if (startswith(l, "notify-fd=")) {
2532 int fd;
2533
2534 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2535 log_debug("Failed to parse notify fd: %s", l + 10);
d86f9d52 2536 else {
03e334a1
LP		 2537 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2538 safe_close(m->notify_fd);
d86f9d52
LP		 2539 m->notify_fd = fdset_remove(fds, fd);
2540 }
2541
2542 } else if (startswith(l, "notify-socket=")) {
2543 char *n;
2544
2545 n = strdup(l+14);
2546 if (!n) {
2547 r = -ENOMEM;
2548 goto finish;
2549 }
2550
2551 free(m->notify_socket);
2552 m->notify_socket = n;
2553
d8fdc620
LP		 2554 } else if (startswith(l, "cgroups-agent-fd=")) {
2555 int fd;
2556
2557 if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2558 log_debug("Failed to parse cgroups agent fd: %s", l + 10);
2559 else {
2560 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
2561 safe_close(m->cgroups_agent_fd);
2562 m->cgroups_agent_fd = fdset_remove(fds, fd);
2563 }
2564
e3dd987c
LP		 2565 } else if (startswith(l, "kdbus-fd=")) {
2566 int fd;
2567
8bf9fcf4 2568 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2569 log_debug("Failed to parse kdbus fd: %s", l + 9);
e3dd987c 2570 else {
03e334a1 2571 safe_close(m->kdbus_fd);
e3dd987c
LP		 2572 m->kdbus_fd = fdset_remove(fds, fd);
2573 }
2574
230314d7
LP		 2575 } else {
2576 int k;
2577
2578 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2579 if (k < 0)
2580 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2581 else if (k == 0)
2582 log_debug("Unknown serialization item '%s'", l);
2583 }
10f8e83c
LP		 2584 }
2585
a16e1123
LP		 2586 for (;;) {
2587 Unit *u;
2588 char name[UNIT_NAME_MAX+2];
2589
2590 /* Start marker */
2591 if (!fgets(name, sizeof(name), f)) {
2592 if (feof(f))
10f8e83c
LP		 2593 r = 0;
2594 else
2595 r = -errno;
a16e1123 2596
82c64bf5 2597 goto finish;
a16e1123
LP		 2598 }
2599
2600 char_array_0(name);
2601
bd0af849
ZJS		 2602 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2603 if (r < 0)
82c64bf5 2604 goto finish;
a16e1123 2605
01e10de3
LP		 2606 r = unit_deserialize(u, f, fds);
2607 if (r < 0)
82c64bf5 2608 goto finish;
a16e1123
LP		 2609 }
2610
10f8e83c 2611finish:
145b1f79 2612 if (ferror(f))
82c64bf5 2613 r = -EIO;
a16e1123 2614
a7556052 2615 assert(m->n_reloading > 0);
313cefa1 2616 m->n_reloading--;
82c64bf5
LP		 2617
2618 return r;
a16e1123
LP		 2619}
2620
2621int manager_reload(Manager *m) {
2622 int r, q;
51d122af
ZJS		 2623 _cleanup_fclose_ FILE *f = NULL;
2624 _cleanup_fdset_free_ FDSet *fds = NULL;
a16e1123
LP		 2625
2626 assert(m);
2627
07719a21
LP		 2628 r = manager_open_serialization(m, &f);
2629 if (r < 0)
a16e1123
LP		 2630 return r;
2631
313cefa1 2632 m->n_reloading++;
718db961 2633 bus_manager_send_reloading(m, true);
38c52d46 2634
07719a21
LP		 2635 fds = fdset_new();
2636 if (!fds) {
313cefa1 2637 m->n_reloading--;
51d122af 2638 return -ENOMEM;
a16e1123
LP		 2639 }
2640
b3680f49 2641 r = manager_serialize(m, f, fds, false);
07719a21 2642 if (r < 0) {
313cefa1 2643 m->n_reloading--;
51d122af 2644 return r;
38c52d46 2645 }
a16e1123
LP		 2646
2647 if (fseeko(f, 0, SEEK_SET) < 0) {
313cefa1 2648 m->n_reloading--;
51d122af 2649 return -errno;
a16e1123
LP		 2650 }
2651
2652 /* From here on there is no way back. */
2653 manager_clear_jobs_and_units(m);
07a78643 2654 lookup_paths_flush_generator(&m->lookup_paths);
84e3543e 2655 lookup_paths_free(&m->lookup_paths);
2ded0c04 2656
4943d143 2657 q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
e801700e
ZJS		 2658 if (q < 0 && r >= 0)
2659 r = q;
5a1e9937 2660
a3c4eb07
LP		 2661 /* Find new unit paths */
2662 q = manager_run_generators(m);
e801700e 2663 if (q < 0 && r >= 0)
07719a21
LP		 2664 r = q;
2665
a1453343 2666 lookup_paths_reduce(&m->lookup_paths);
5a1e9937
LP		 2667 manager_build_unit_path_cache(m);
2668
a16e1123 2669 /* First, enumerate what we can from all config files */
ba64af90 2670 manager_enumerate(m);
a16e1123
LP		 2671
2672 /* Second, deserialize our stored data */
07719a21 2673 q = manager_deserialize(m, f, fds);
e801700e 2674 if (q < 0 && r >= 0)
a16e1123
LP		 2675 r = q;
2676
2677 fclose(f);
2678 f = NULL;
2679
a2cc4a6c
ZJS		 2680 /* Re-register notify_fd as event source */
2681 q = manager_setup_notify(m);
e801700e 2682 if (q < 0 && r >= 0)
a2cc4a6c
ZJS		 2683 r = q;
2684
d8fdc620
LP		 2685 q = manager_setup_cgroups_agent(m);
2686 if (q < 0 && r >= 0)
2687 r = q;
2688
a16e1123 2689 /* Third, fire things up! */
007c6337 2690 manager_coldplug(m);
a16e1123 2691
8936a5e3
DM		 2692 /* Sync current state of bus names with our set of listening units */
2693 if (m->api_bus)
2694 manager_sync_bus_names(m, m->api_bus);
2695
a7556052
LP		 2696 assert(m->n_reloading > 0);
2697 m->n_reloading--;
9f611ad8 2698
71445ae7
LP		 2699 m->send_reloading_done = true;
2700
a16e1123
LP		 2701 return r;
2702}
2703
fdf20a31 2704void manager_reset_failed(Manager *m) {
5632e374
LP		 2705 Unit *u;
2706 Iterator i;
2707
2708 assert(m);
2709
2710 HASHMAP_FOREACH(u, m->units, i)
fdf20a31 2711 unit_reset_failed(u);
5632e374
LP		 2712}
2713
31afa0a4 2714bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
8f6df3fa
LP		 2715 Unit *u;
2716
2717 assert(m);
2718 assert(name);
2719
2720 /* Returns true if the unit is inactive or going down */
bd0af849
ZJS		 2721 u = manager_get_unit(m, name);
2722 if (!u)
8f6df3fa
LP		 2723 return true;
2724
31afa0a4 2725 return unit_inactive_or_pending(u);
8f6df3fa
LP		 2726}
2727
56dacdbc 2728static void manager_notify_finished(Manager *m) {
7ceba241 2729 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
915b3753 2730 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
b0c918b9 2731
56dacdbc 2732 if (m->test_run)
b0c918b9
LP		 2733 return;
2734
463d0d15 2735 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) {
e03ae661 2736
915b3753
LP		 2737 /* Note that m->kernel_usec.monotonic is always at 0,
2738 * and m->firmware_usec.monotonic and
2739 * m->loader_usec.monotonic should be considered
2740 * negative values. */
2741
7ceba241
LP		 2742 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2743 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
915b3753 2744 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
7ceba241 2745 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
18fa6b27 2746
e9ddabc2 2747 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
18fa6b27 2748
915b3753
LP		 2749 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2750 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
18fa6b27 2751
e12919e8 2752 log_struct(LOG_INFO,
e2cc6eca 2753 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8
LP		 2754 "KERNEL_USEC="USEC_FMT, kernel_usec,
2755 "INITRD_USEC="USEC_FMT, initrd_usec,
2756 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2757 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2758 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2759 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2760 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2761 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2762 NULL);
18fa6b27 2763 } else {
915b3753 2764 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
18fa6b27
LP		 2765 initrd_usec = 0;
2766
81270860 2767 log_struct(LOG_INFO,
e2cc6eca 2768 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2769 "KERNEL_USEC="USEC_FMT, kernel_usec,
ccd06097 2770 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2771 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2772 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2773 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2774 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
81270860 2775 NULL);
e12919e8
LP		 2776 }
2777 } else {
2778 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2779 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2780
2781 log_struct(LOG_INFO,
e2cc6eca 2782 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2783 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2784 LOG_MESSAGE("Startup finished in %s.",
2785 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2786 NULL);
18fa6b27 2787 }
b0c918b9 2788
718db961 2789 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
530345e7
LP		 2790
2791 sd_notifyf(false,
af4ec430
LP		 2792 "READY=1\n"
2793 "STATUS=Startup finished in %s.",
2fa4092c 2794 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
b0c918b9
LP		 2795}
2796
56dacdbc 2797void manager_check_finished(Manager *m) {
56dacdbc
ZJS		 2798 assert(m);
2799
2c289ea8 2800 if (MANAGER_IS_RELOADING(m))
aad1976f
LP		 2801 return;
2802
9771b62d
LP		 2803 /* Verify that we are actually running currently. Initially
2804 * the exit code is set to invalid, and during operation it is
2805 * then set to MANAGER_OK */
2806 if (m->exit_code != MANAGER_OK)
2807 return;
2808
56dacdbc 2809 if (hashmap_size(m->jobs) > 0) {
56dacdbc 2810 if (m->jobs_in_progress_event_source)
2ae56591 2811 /* Ignore any failure, this is only for feedback */
e7ab4d1a 2812 (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
56dacdbc
ZJS		 2813
2814 return;
2815 }
2816
2817 manager_flip_auto_status(m, false);
2818
2819 /* Notify Type=idle units that we are done now */
56dacdbc
ZJS		 2820 manager_close_idle_pipe(m);
2821
2822 /* Turn off confirm spawn now */
2823 m->confirm_spawn = false;
2824
2825 /* No need to update ask password status when we're going non-interactive */
2826 manager_close_ask_password(m);
2827
2828 /* This is no longer the first boot */
2829 manager_set_first_boot(m, false);
2830
2831 if (dual_timestamp_is_set(&m->finish_timestamp))
2832 return;
2833
2834 dual_timestamp_get(&m->finish_timestamp);
2835
2836 manager_notify_finished(m);
2837
e7ab4d1a 2838 manager_invalidate_startup_units(m);
56dacdbc
ZJS		 2839}
2840
e801700e 2841static int manager_run_generators(Manager *m) {
f42348ac 2842 _cleanup_strv_free_ char **paths = NULL;
07719a21 2843 const char *argv[5];
e801700e 2844 char **path;
07719a21 2845 int r;
5a1e9937
LP		 2846
2847 assert(m);
2848
0d8c31ff 2849 if (m->test_run)
e801700e 2850 return 0;
0d8c31ff 2851
9183df70 2852 paths = generator_binary_paths(m->unit_file_scope);
e801700e
ZJS		 2853 if (!paths)
2854 return log_oom();
5a1e9937 2855
49681057
ZJS		 2856 /* Optimize by skipping the whole process by not creating output directories
2857 * if no generators are found. */
e801700e 2858 STRV_FOREACH(path, paths) {
a3c4eb07 2859 if (access(*path, F_OK) >= 0)
e801700e 2860 goto found;
49681057 2861 if (errno != ENOENT)
e801700e 2862 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
5a1e9937 2863 }
a3c4eb07 2864
e801700e 2865 return 0;
5a1e9937 2866
e801700e 2867 found:
cd64fd56 2868 r = lookup_paths_mkdir_generator(&m->lookup_paths);
07719a21
LP		 2869 if (r < 0)
2870 goto finish;
5a1e9937 2871
83cc030f 2872 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
a3c4eb07
LP		 2873 argv[1] = m->lookup_paths.generator;
2874 argv[2] = m->lookup_paths.generator_early;
2875 argv[3] = m->lookup_paths.generator_late;
07719a21 2876 argv[4] = NULL;
5a1e9937 2877
718db961 2878 RUN_WITH_UMASK(0022)
e801700e 2879 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
5a1e9937 2880
718db961 2881finish:
cd64fd56 2882 lookup_paths_trim_generator(&m->lookup_paths);
e801700e 2883 return r;
5a1e9937
LP		 2884}
2885
718db961
LP		 2886int manager_environment_add(Manager *m, char **minus, char **plus) {
2887 char **a = NULL, **b = NULL, **l;
97d0e5f8 2888 assert(m);
bcd8e6d1 2889
718db961 2890 l = m->environment;
bcd8e6d1 2891
718db961
LP		 2892 if (!strv_isempty(minus)) {
2893 a = strv_env_delete(l, 1, minus);
2894 if (!a)
2895 return -ENOMEM;
2896
2897 l = a;
2898 }
2899
2900 if (!strv_isempty(plus)) {
2901 b = strv_env_merge(2, l, plus);
aa9f8a30
AH		 2902 if (!b) {
2903 strv_free(a);
718db961 2904 return -ENOMEM;
aa9f8a30 2905 }
bcd8e6d1 2906
718db961
LP		 2907 l = b;
2908 }
2909
2910 if (m->environment != l)
2911 strv_free(m->environment);
2912 if (a != l)
2913 strv_free(a);
2914 if (b != l)
2915 strv_free(b);
2916
f069efb4
LP		 2917 m->environment = l;
2918 manager_clean_environment(m);
2919 strv_sort(m->environment);
2920
97d0e5f8
UTL		 2921 return 0;
2922}
2923
c93ff2e9
FC		 2924int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2925 int i;
2926
2927 assert(m);
2928
517d56b1 2929 for (i = 0; i < _RLIMIT_MAX; i++) {
d9814c76
EV		 2930 m->rlimit[i] = mfree(m->rlimit[i]);
2931
07719a21
LP		 2932 if (!default_rlimit[i])
2933 continue;
c93ff2e9 2934
07719a21
LP		 2935 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2936 if (!m->rlimit[i])
2937 return -ENOMEM;
c93ff2e9
FC		 2938 }
2939
2940 return 0;
2941}
2942
4cfa2c99 2943void manager_recheck_journal(Manager *m) {
f1dd0c3f
LP		 2944 Unit *u;
2945
2946 assert(m);
2947
463d0d15 2948 if (!MANAGER_IS_SYSTEM(m))
f1dd0c3f
LP		 2949 return;
2950
731a676c
LP		 2951 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2952 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
4cfa2c99 2953 log_close_journal();
731a676c 2954 return;
f1dd0c3f
LP		 2955 }
2956
731a676c
LP		 2957 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2958 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
4cfa2c99 2959 log_close_journal();
731a676c
LP		 2960 return;
2961 }
f1dd0c3f 2962
731a676c
LP		 2963 /* Hmm, OK, so the socket is fully up and the service is up
2964 * too, then let's make use of the thing. */
f1dd0c3f
LP		 2965 log_open();
2966}
2967
d450b6f2 2968void manager_set_show_status(Manager *m, ShowStatus mode) {
27d340c7 2969 assert(m);
d450b6f2 2970 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
27d340c7 2971
463d0d15 2972 if (!MANAGER_IS_SYSTEM(m))
27d340c7
LP		 2973 return;
2974
76b6f3f6
ZJS		 2975 if (m->show_status != mode)
2976 log_debug("%s showing of status.",
2977 mode == SHOW_STATUS_NO ? "Disabling" : "Enabling");
d450b6f2 2978 m->show_status = mode;
27d340c7 2979
d450b6f2 2980 if (mode > 0)
ac5b0c13 2981 (void) touch("/run/systemd/show-status");
27d340c7 2982 else
ac5b0c13 2983 (void) unlink("/run/systemd/show-status");
27d340c7
LP		 2984}
2985
127d5fd1 2986static bool manager_get_show_status(Manager *m, StatusType type) {
27d340c7
LP		 2987 assert(m);
2988
463d0d15 2989 if (!MANAGER_IS_SYSTEM(m))
27d340c7
LP		 2990 return false;
2991
31a7eb86
ZJS		 2992 if (m->no_console_output)
2993 return false;
2994
d81afec1 2995 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
08510627
LP		 2996 return false;
2997
e46b13c8 2998 /* If we cannot find out the status properly, just proceed. */
ebc5788e 2999 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
e46b13c8
ZJS		 3000 return false;
3001
d450b6f2 3002 if (m->show_status > 0)
27d340c7
LP		 3003 return true;
3004
031886ed 3005 return false;
27d340c7 3006}
68b29a9f 3007
e2680723
LP		 3008void manager_set_first_boot(Manager *m, bool b) {
3009 assert(m);
3010
463d0d15 3011 if (!MANAGER_IS_SYSTEM(m))
e2680723
LP		 3012 return;
3013
ae2a2c53
LP		 3014 if (m->first_boot != (int) b) {
3015 if (b)
3016 (void) touch("/run/systemd/first-boot");
3017 else
3018 (void) unlink("/run/systemd/first-boot");
3019 }
e2680723 3020
ae2a2c53 3021 m->first_boot = b;
e2680723
LP		 3022}
3023
127d5fd1 3024void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
25cee550
MS		 3025 va_list ap;
3026
cb6531be
ZJS		 3027 /* If m is NULL, assume we're after shutdown and let the messages through. */
3028
3029 if (m && !manager_get_show_status(m, type))
25cee550
MS		 3030 return;
3031
03b717a3
MS		 3032 /* XXX We should totally drop the check for ephemeral here
3033 * and thus effectively make 'Type=idle' pointless. */
cb6531be 3034 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
03b717a3
MS		 3035 return;
3036
25cee550 3037 va_start(ap, format);
127d5fd1 3038 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
25cee550
MS		 3039 va_end(ap);
3040}
3041
a57f7e2c
LP		 3042Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3043 char p[strlen(path)+1];
3044
3045 assert(m);
3046 assert(path);
3047
3048 strcpy(p, path);
3049 path_kill_slashes(p);
3050
3051 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3052}
e66cf1a3
LP		 3053
3054const char *manager_get_runtime_prefix(Manager *m) {
f755e3b7 3055 assert(m);
e66cf1a3 3056
463d0d15 3057 return MANAGER_IS_SYSTEM(m) ?
e66cf1a3
LP		 3058 "/run" :
3059 getenv("XDG_RUNTIME_DIR");
3060}
f755e3b7 3061
5269eb6b 3062int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
03455c28 3063 unsigned size;
5269eb6b 3064 int r;
03455c28
LDM		 3065
3066 assert(m);
3067 assert(u->manager == m);
3068
3069 size = set_size(m->failed_units);
3070
9fff8981 3071 if (failed) {
5269eb6b
LP		 3072 r = set_ensure_allocated(&m->failed_units, NULL);
3073 if (r < 0)
3074 return log_oom();
3075
9fff8981 3076 if (set_put(m->failed_units, u) < 0)
5269eb6b 3077 return log_oom();
9fff8981 3078 } else
5269eb6b 3079 (void) set_remove(m->failed_units, u);
03455c28
LDM		 3080
3081 if (set_size(m->failed_units) != size)
3082 bus_manager_send_change_signal(m);
5269eb6b
LP		 3083
3084 return 0;
03455c28
LDM		 3085}
3086
f755e3b7
LP		 3087ManagerState manager_state(Manager *m) {
3088 Unit *u;
3089
3090 assert(m);
3091
3092 /* Did we ever finish booting? If not then we are still starting up */
d81afec1
LP		 3093 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3094
3095 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3096 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3097 return MANAGER_INITIALIZING;
3098
f755e3b7 3099 return MANAGER_STARTING;
d81afec1 3100 }
f755e3b7
LP		 3101
3102 /* Is the special shutdown target queued? If so, we are in shutdown state */
3103 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
f0469b8c 3104 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))
f755e3b7
LP		 3105 return MANAGER_STOPPING;
3106
3107 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3108 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3109 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
f0469b8c 3110 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
f755e3b7
LP		 3111 return MANAGER_MAINTENANCE;
3112
3113 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3114 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
f0469b8c 3115 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
f755e3b7
LP		 3116 return MANAGER_MAINTENANCE;
3117
3118 /* Are there any failed units? If so, we are in degraded mode */
3119 if (set_size(m->failed_units) > 0)
3120 return MANAGER_DEGRADED;
3121
3122 return MANAGER_RUNNING;
3123}
3124
3125static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
d81afec1 3126 [MANAGER_INITIALIZING] = "initializing",
f755e3b7
LP		 3127 [MANAGER_STARTING] = "starting",
3128 [MANAGER_RUNNING] = "running",
3129 [MANAGER_DEGRADED] = "degraded",
3130 [MANAGER_MAINTENANCE] = "maintenance",
3131 [MANAGER_STOPPING] = "stopping",
3132};
3133
3134DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
Unnamed repository; edit this file 'description' to name the repository.