]> 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
man: mention system-shutdown hook directory in synopsis (#3741)
[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);
64c3610b
FB		 139 if (log_get_show_color())
140 p = stpcpy(p, ANSI_RED);
03b717a3
MS		 141 *p++ = '*';
142 }
143
144 if (pos > 0 && pos <= width) {
64c3610b
FB		 145 if (log_get_show_color())
146 p = stpcpy(p, ANSI_HIGHLIGHT_RED);
03b717a3
MS		 147 *p++ = '*';
148 }
149
64c3610b
FB		 150 if (log_get_show_color())
151 p = stpcpy(p, ANSI_NORMAL);
03b717a3
MS		 152
153 if (pos < width) {
64c3610b
FB		 154 if (log_get_show_color())
155 p = stpcpy(p, ANSI_RED);
03b717a3 156 *p++ = '*';
6282c859
MS		 157 if (pos < width-1)
158 p = mempset(p, ' ', width-1-pos);
64c3610b
FB		 159 if (log_get_show_color())
160 strcpy(p, ANSI_NORMAL);
03b717a3 161 }
03b717a3
MS		 162}
163
cb8ccb22 164void manager_flip_auto_status(Manager *m, bool enable) {
f755e3b7
LP		 165 assert(m);
166
cb8ccb22
ZJS		 167 if (enable) {
168 if (m->show_status == SHOW_STATUS_AUTO)
169 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
170 } else {
171 if (m->show_status == SHOW_STATUS_TEMPORARY)
172 manager_set_show_status(m, SHOW_STATUS_AUTO);
173 }
174}
175
03b717a3 176static void manager_print_jobs_in_progress(Manager *m) {
718db961 177 _cleanup_free_ char *job_of_n = NULL;
03b717a3
MS		 178 Iterator i;
179 Job *j;
03b717a3
MS		 180 unsigned counter = 0, print_nr;
181 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
182 unsigned cylon_pos;
8bb310c3
ZJS		 183 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
184 uint64_t x;
03b717a3 185
718db961 186 assert(m);
9c3349e2 187 assert(m->n_running_jobs > 0);
718db961 188
cb8ccb22 189 manager_flip_auto_status(m, true);
d450b6f2 190
03b717a3
MS		 191 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
192
193 HASHMAP_FOREACH(j, m->jobs, i)
194 if (j->state == JOB_RUNNING && counter++ == print_nr)
195 break;
196
e970a72e
MS		 197 /* m->n_running_jobs must be consistent with the contents of m->jobs,
198 * so the above loop must have succeeded in finding j. */
199 assert(counter == print_nr + 1);
51d122af 200 assert(j);
5a82a91a 201
03b717a3
MS		 202 cylon_pos = m->jobs_in_progress_iteration % 14;
203 if (cylon_pos >= 8)
204 cylon_pos = 14 - cylon_pos;
205 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
206
8bb310c3
ZJS		 207 m->jobs_in_progress_iteration++;
208
d6483ba7
ZJS		 209 if (m->n_running_jobs > 1) {
210 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
211 job_of_n = NULL;
212 }
03b717a3 213
8bb310c3
ZJS		 214 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
215 if (job_get_timeout(j, &x) > 0)
216 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
217
127d5fd1 218 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
8bb310c3
ZJS		 219 "%sA %s job is running for %s (%s / %s)",
220 strempty(job_of_n),
221 job_type_to_string(j->type),
222 unit_description(j->unit),
223 time, limit);
03b717a3
MS		 224}
225
e46b13c8
ZJS		 226static int have_ask_password(void) {
227 _cleanup_closedir_ DIR *dir;
228
229 dir = opendir("/run/systemd/ask-password");
230 if (!dir) {
231 if (errno == ENOENT)
232 return false;
233 else
234 return -errno;
235 }
236
237 for (;;) {
238 struct dirent *de;
239
240 errno = 0;
241 de = readdir(dir);
b3267152 242 if (!de && errno > 0)
e46b13c8
ZJS		 243 return -errno;
244 if (!de)
245 return false;
246
247 if (startswith(de->d_name, "ask."))
248 return true;
249 }
250}
251
252static int manager_dispatch_ask_password_fd(sd_event_source *source,
253 int fd, uint32_t revents, void *userdata) {
254 Manager *m = userdata;
255
256 assert(m);
257
258 flush_fd(fd);
259
260 m->have_ask_password = have_ask_password();
261 if (m->have_ask_password < 0)
262 /* Log error but continue. Negative have_ask_password
263 * is treated as unknown status. */
c33b3297 264 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
e46b13c8
ZJS		 265
266 return 0;
267}
268
269static void manager_close_ask_password(Manager *m) {
270 assert(m);
271
e46b13c8 272 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
90990e28 273 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
e46b13c8
ZJS		 274 m->have_ask_password = -EINVAL;
275}
276
277static int manager_check_ask_password(Manager *m) {
278 int r;
279
280 assert(m);
281
282 if (!m->ask_password_event_source) {
283 assert(m->ask_password_inotify_fd < 0);
284
285 mkdir_p_label("/run/systemd/ask-password", 0755);
286
287 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 288 if (m->ask_password_inotify_fd < 0)
289 return log_error_errno(errno, "inotify_init1() failed: %m");
e46b13c8
ZJS		 290
291 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
56f64d95 292 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
e46b13c8
ZJS		 293 manager_close_ask_password(m);
294 return -errno;
295 }
296
297 r = sd_event_add_io(m->event, &m->ask_password_event_source,
298 m->ask_password_inotify_fd, EPOLLIN,
299 manager_dispatch_ask_password_fd, m);
300 if (r < 0) {
56f64d95 301 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
e46b13c8
ZJS		 302 manager_close_ask_password(m);
303 return -errno;
304 }
305
7dfbe2e3
TG		 306 (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
307
e46b13c8
ZJS		 308 /* Queries might have been added meanwhile... */
309 manager_dispatch_ask_password_fd(m->ask_password_event_source,
310 m->ask_password_inotify_fd, EPOLLIN, m);
311 }
312
313 return m->have_ask_password;
314}
315
31a7eb86 316static int manager_watch_idle_pipe(Manager *m) {
31a7eb86
ZJS		 317 int r;
318
718db961
LP		 319 assert(m);
320
321 if (m->idle_pipe_event_source)
31a7eb86
ZJS		 322 return 0;
323
324 if (m->idle_pipe[2] < 0)
325 return 0;
326
151b9b96 327 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		 328 if (r < 0)
329 return log_error_errno(r, "Failed to watch idle pipe: %m");
31a7eb86 330
7dfbe2e3
TG		 331 (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
332
31a7eb86 333 return 0;
31a7eb86
ZJS		 334}
335
718db961
LP		 336static void manager_close_idle_pipe(Manager *m) {
337 assert(m);
31a7eb86 338
cd72bd8a
LP		 339 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
340
3d94f76c
LP		 341 safe_close_pair(m->idle_pipe);
342 safe_close_pair(m->idle_pipe + 2);
31a7eb86
ZJS		 343}
344
8742514c 345static int manager_setup_time_change(Manager *m) {
718db961 346 int r;
b92bea5d
ZJS		 347
348 /* We only care for the cancellation event, hence we set the
349 * timeout to the latest possible value. */
350 struct itimerspec its = {
351 .it_value.tv_sec = TIME_T_MAX,
352 };
8742514c 353
718db961
LP		 354 assert(m);
355 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
8742514c 356
0d8c31ff
ZJS		 357 if (m->test_run)
358 return 0;
359
8742514c
LP		 360 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
361 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
362
718db961 363 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
4a62c710
MS		 364 if (m->time_change_fd < 0)
365 return log_error_errno(errno, "Failed to create timerfd: %m");
8742514c 366
718db961 367 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
56f64d95 368 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
03e334a1 369 m->time_change_fd = safe_close(m->time_change_fd);
8742514c
LP		 370 return 0;
371 }
372
151b9b96 373 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		 374 if (r < 0)
375 return log_error_errno(r, "Failed to create time change event source: %m");
8742514c 376
7dfbe2e3
TG		 377 (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
378
8742514c
LP		 379 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
380
381 return 0;
382}
383
80876c20 384static int enable_special_signals(Manager *m) {
718db961 385 _cleanup_close_ int fd = -1;
80876c20
LP		 386
387 assert(m);
388
37453b3a
EV		 389 if (m->test_run)
390 return 0;
391
a41b539e 392 /* Enable that we get SIGINT on control-alt-del. In containers
c9999773
LP		 393 * this will fail with EPERM (older) or EINVAL (newer), so
394 * ignore that. */
395 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
56f64d95 396 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
80876c20 397
a41b539e
LP		 398 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
399 if (fd < 0) {
400 /* Support systems without virtual console */
401 if (fd != -ENOENT)
56f64d95 402 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
a41b539e 403 } else {
80876c20
LP		 404 /* Enable that we get SIGWINCH on kbrequest */
405 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
56f64d95 406 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
80876c20
LP		 407 }
408
409 return 0;
410}
411
ce578209 412static int manager_setup_signals(Manager *m) {
b92bea5d
ZJS		 413 struct sigaction sa = {
414 .sa_handler = SIG_DFL,
415 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
416 };
718db961
LP		 417 sigset_t mask;
418 int r;
60918275 419
ce578209
LP		 420 assert(m);
421
57c0c30e
LP		 422 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
423
4dffec14
LP		 424 /* We make liberal use of realtime signals here. On
425 * Linux/glibc we have 30 of them (with the exception of Linux
426 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
427 * (aka SIGRTMAX). */
7d793605 428
4dffec14 429 assert_se(sigemptyset(&mask) == 0);
7d793605
LP		 430 sigset_add_many(&mask,
431 SIGCHLD, /* Child died */
432 SIGTERM, /* Reexecute daemon */
433 SIGHUP, /* Reload configuration */
434 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
435 SIGUSR2, /* systemd: dump status */
436 SIGINT, /* Kernel sends us this on control-alt-del */
437 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
438 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
4dffec14 439
7d793605 440 SIGRTMIN+0, /* systemd: start default.target */
0003d1ab 441 SIGRTMIN+1, /* systemd: isolate rescue.target */
7d793605
LP		 442 SIGRTMIN+2, /* systemd: isolate emergency.target */
443 SIGRTMIN+3, /* systemd: start halt.target */
444 SIGRTMIN+4, /* systemd: start poweroff.target */
445 SIGRTMIN+5, /* systemd: start reboot.target */
0003d1ab 446 SIGRTMIN+6, /* systemd: start kexec.target */
4dffec14
LP		 447
448 /* ... space for more special targets ... */
449
0003d1ab
LP		 450 SIGRTMIN+13, /* systemd: Immediate halt */
451 SIGRTMIN+14, /* systemd: Immediate poweroff */
452 SIGRTMIN+15, /* systemd: Immediate reboot */
453 SIGRTMIN+16, /* systemd: Immediate kexec */
4dffec14
LP		 454
455 /* ... space for more immediate system state changes ... */
456
0658666b
LP		 457 SIGRTMIN+20, /* systemd: enable status messages */
458 SIGRTMIN+21, /* systemd: disable status messages */
253ee27a
LP		 459 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
460 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
600b704e 461 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
4dffec14
LP		 462
463 /* .. one free signal here ... */
464
465#if !defined(__hppa64__) && !defined(__hppa__)
466 /* Apparently Linux on hppa has fewer RT
467 * signals (SIGRTMAX is SIGRTMIN+25 there),
468 * hence let's not try to make use of them
469 * here. Since these commands are accessible
470 * by different means and only really a safety
471 * net, the missing functionality on hppa
472 * shouldn't matter. */
473
4cfa2c99 474 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
253ee27a
LP		 475 SIGRTMIN+27, /* systemd: set log target to console */
476 SIGRTMIN+28, /* systemd: set log target to kmsg */
ee33e53a 477 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
4dffec14
LP		 478
479 /* ... one free signal here SIGRTMIN+30 ... */
480#endif
7d793605 481 -1);
ce578209
LP		 482 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
483
718db961
LP		 484 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
485 if (m->signal_fd < 0)
ce578209
LP		 486 return -errno;
487
151b9b96 488 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
718db961
LP		 489 if (r < 0)
490 return r;
ce578209 491
7dfbe2e3
TG		 492 (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
493
d8fdc620
LP		 494 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
495 * notify processing can still figure out to which process/service a message belongs, before we reap the
496 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
497 * status information before detecting that there's no process in a cgroup. */
498 r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6);
29083707
LP		 499 if (r < 0)
500 return r;
501
463d0d15 502 if (MANAGER_IS_SYSTEM(m))
80876c20 503 return enable_special_signals(m);
e1414003 504
ce578209
LP		 505 return 0;
506}
507
f069efb4
LP		 508static void manager_clean_environment(Manager *m) {
509 assert(m);
510
511 /* Let's remove some environment variables that we
512 * need ourselves to communicate with our clients */
513 strv_env_unset_many(
514 m->environment,
515 "NOTIFY_SOCKET",
516 "MAINPID",
517 "MANAGERPID",
518 "LISTEN_PID",
519 "LISTEN_FDS",
8dd4c05b 520 "LISTEN_FDNAMES",
f069efb4
LP		 521 "WATCHDOG_PID",
522 "WATCHDOG_USEC",
523 NULL);
524}
525
e21fea24 526static int manager_default_environment(Manager *m) {
71ecc858
LP		 527 assert(m);
528
463d0d15 529 if (MANAGER_IS_SYSTEM(m)) {
e21fea24
KS		 530 /* The system manager always starts with a clean
531 * environment for its children. It does not import
532 * the kernel or the parents exported variables.
533 *
534 * The initial passed environ is untouched to keep
535 * /proc/self/environ valid; it is used for tagging
536 * the init process inside containers. */
43638332
ZJS		 537 m->environment = strv_new("PATH=" DEFAULT_PATH,
538 NULL);
e21fea24
KS		 539
540 /* Import locale variables LC_*= from configuration */
541 locale_setup(&m->environment);
43d03a83 542 } else {
e21fea24
KS		 543 /* The user manager passes its own environment
544 * along to its children. */
545 m->environment = strv_copy(environ);
43d03a83
LP		 546 }
547
e21fea24
KS		 548 if (!m->environment)
549 return -ENOMEM;
8b55b8c4 550
f069efb4 551 manager_clean_environment(m);
9d5a3757
LP		 552 strv_sort(m->environment);
553
e21fea24 554 return 0;
71ecc858
LP		 555}
556
f2341e0a 557
463d0d15 558int manager_new(UnitFileScope scope, bool test_run, Manager **_m) {
ce578209 559 Manager *m;
e3dd987c 560 int r;
8e274523
LP		 561
562 assert(_m);
463d0d15 563 assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER));
ce578209 564
915b3753
LP		 565 m = new0(Manager, 1);
566 if (!m)
8e274523 567 return -ENOMEM;
60918275 568
463d0d15 569 m->unit_file_scope = scope;
a16e1123 570 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
bd8f585b 571 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
9ded9cd1
LP		 572 m->default_tasks_accounting = true;
573 m->default_tasks_max = UINT64_C(512);
80876c20 574
463d0d15
LP		 575#ifdef ENABLE_EFI
576 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
577 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
578#endif
579
f2341e0a 580 /* Prepare log fields we can use for structured logging */
463d0d15
LP		 581 if (MANAGER_IS_SYSTEM(m)) {
582 m->unit_log_field = "UNIT=";
583 m->unit_log_format_string = "UNIT=%s";
584 } else {
585 m->unit_log_field = "USER_UNIT=";
586 m->unit_log_format_string = "USER_UNIT=%s";
587 }
f2341e0a 588
718db961 589 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
8742514c 590
d8fdc620
LP		 591 m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd =
592 m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd =
593 m->ask_password_inotify_fd = -1;
d379d442 594
ea430986 595 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
9152c765 596
e46b13c8 597 m->have_ask_password = -EINVAL; /* we don't know */
ae2a2c53 598 m->first_boot = -1;
e46b13c8 599
0d8c31ff
ZJS		 600 m->test_run = test_run;
601
2e5c94b9
LP		 602 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
603 RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
604
e21fea24
KS		 605 r = manager_default_environment(m);
606 if (r < 0)
1137a57c
LP		 607 goto fail;
608
d5099efc 609 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
718db961 610 if (r < 0)
60918275
LP		 611 goto fail;
612
d5099efc 613 r = hashmap_ensure_allocated(&m->jobs, NULL);
718db961 614 if (r < 0)
60918275
LP		 615 goto fail;
616
d5099efc 617 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
718db961 618 if (r < 0)
9152c765
LP		 619 goto fail;
620
d5099efc 621 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
718db961 622 if (r < 0)
05e343b7
LP		 623 goto fail;
624
718db961
LP		 625 r = sd_event_default(&m->event);
626 if (r < 0)
8742514c
LP		 627 goto fail;
628
151b9b96 629 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
752b5905
LP		 630 if (r < 0)
631 goto fail;
632
633 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
634 if (r < 0)
635 goto fail;
636
637 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
638 if (r < 0)
639 goto fail;
640
7dfbe2e3
TG		 641 (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
642
8742514c
LP		 643 r = manager_setup_signals(m);
644 if (r < 0)
9152c765
LP		 645 goto fail;
646
8742514c
LP		 647 r = manager_setup_cgroup(m);
648 if (r < 0)
8e274523
LP		 649 goto fail;
650
8742514c
LP		 651 r = manager_setup_time_change(m);
652 if (r < 0)
8c47c732
LP		 653 goto fail;
654
9670d583
LP		 655 m->udev = udev_new();
656 if (!m->udev) {
657 r = -ENOMEM;
658 goto fail;
659 }
660
d86f9d52
LP		 661 /* Note that we set up neither kdbus, nor the notify fd
662 * here. We do that after deserialization, since they might
663 * have gotten serialized across the reexec. */
664
72bc8d00
LP		 665 m->taint_usr = dir_is_empty("/usr") > 0;
666
8e274523
LP		 667 *_m = m;
668 return 0;
60918275
LP		 669
670fail:
671 manager_free(m);
8e274523 672 return r;
60918275
LP		 673}
674
d86f9d52 675static int manager_setup_notify(Manager *m) {
7181dbdb 676 int r;
d86f9d52 677
0d8c31ff
ZJS		 678 if (m->test_run)
679 return 0;
680
d86f9d52
LP		 681 if (m->notify_fd < 0) {
682 _cleanup_close_ int fd = -1;
920b52e4 683 union sockaddr_union sa = {
7181dbdb
LP		 684 .sa.sa_family = AF_UNIX,
685 };
55836941 686 static const int one = 1;
92dd7c49 687 const char *e;
d86f9d52
LP		 688
689 /* First free all secondary fields */
a1e58e8e 690 m->notify_socket = mfree(m->notify_socket);
d86f9d52
LP		 691 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
692
693 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
4a62c710
MS		 694 if (fd < 0)
695 return log_error_errno(errno, "Failed to allocate notification socket: %m");
d86f9d52 696
a47806fa
LP		 697 fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE);
698
92dd7c49
LP		 699 e = manager_get_runtime_prefix(m);
700 if (!e) {
701 log_error("Failed to determine runtime prefix.");
702 return -EINVAL;
7181dbdb 703 }
92dd7c49
LP		 704
705 m->notify_socket = strappend(e, "/systemd/notify");
498e87d6
LP		 706 if (!m->notify_socket)
707 return log_oom();
708
709 (void) mkdir_parents_label(m->notify_socket, 0755);
f0e62e89 710 (void) unlink(m->notify_socket);
7181dbdb
LP		 711
712 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
fc2fffe7 713 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
4a62c710
MS		 714 if (r < 0)
715 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
d86f9d52
LP		 716
717 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
4a62c710
MS		 718 if (r < 0)
719 return log_error_errno(errno, "SO_PASSCRED failed: %m");
d86f9d52 720
d86f9d52
LP		 721 m->notify_fd = fd;
722 fd = -1;
723
724 log_debug("Using notification socket %s", m->notify_socket);
725 }
726
727 if (!m->notify_event_source) {
151b9b96 728 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
895b3a7b
MS		 729 if (r < 0)
730 return log_error_errno(r, "Failed to allocate notify event source: %m");
d86f9d52 731
d8fdc620
LP		 732 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
733 * service an exit message belongs. */
df006034 734 r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7);
23bbb0de
MS		 735 if (r < 0)
736 return log_error_errno(r, "Failed to set priority of notify event source: %m");
7dfbe2e3
TG		 737
738 (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
d86f9d52
LP		 739 }
740
741 return 0;
742}
743
d8fdc620
LP		 744static int manager_setup_cgroups_agent(Manager *m) {
745
746 static const union sockaddr_union sa = {
747 .un.sun_family = AF_UNIX,
748 .un.sun_path = "/run/systemd/cgroups-agent",
749 };
750 int r;
751
752 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
753 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
754 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
755 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
756 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
757 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
758 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
759 * we thus won't lose messages.
760 *
761 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
762 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
763 * bus for these messages. */
764
765 if (m->test_run)
766 return 0;
767
768 if (!MANAGER_IS_SYSTEM(m))
769 return 0;
770
771 if (cg_unified() > 0) /* We don't need this anymore on the unified hierarchy */
772 return 0;
773
774 if (m->cgroups_agent_fd < 0) {
775 _cleanup_close_ int fd = -1;
776
777 /* First free all secondary fields */
778 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
779
780 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
781 if (fd < 0)
782 return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m");
783
784 fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE);
785
786 (void) unlink(sa.un.sun_path);
787
788 /* Only allow root to connect to this socket */
789 RUN_WITH_UMASK(0077)
fc2fffe7 790 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
d8fdc620
LP		 791 if (r < 0)
792 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
793
794 m->cgroups_agent_fd = fd;
795 fd = -1;
796 }
797
798 if (!m->cgroups_agent_event_source) {
799 r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m);
800 if (r < 0)
801 return log_error_errno(r, "Failed to allocate cgroups agent event source: %m");
802
803 /* Process cgroups notifications early, but after having processed service notification messages or
804 * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification,
805 * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of
806 * cgroup inotify for the unified cgroup stuff. */
807 r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5);
808 if (r < 0)
809 return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m");
810
811 (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent");
812 }
813
814 return 0;
815}
816
d86f9d52
LP		 817static int manager_connect_bus(Manager *m, bool reexecuting) {
818 bool try_bus_connect;
819
820 assert(m);
821
0d8c31ff
ZJS		 822 if (m->test_run)
823 return 0;
824
d86f9d52
LP		 825 try_bus_connect =
826 m->kdbus_fd >= 0 ||
827 reexecuting ||
463d0d15 828 (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"));
d86f9d52 829
ff9b60f3 830 /* Try to connect to the buses, if possible. */
d86f9d52
LP		 831 return bus_init(m, try_bus_connect);
832}
833
23a177ef 834static unsigned manager_dispatch_cleanup_queue(Manager *m) {
595ed347 835 Unit *u;
23a177ef
LP		 836 unsigned n = 0;
837
838 assert(m);
839
595ed347
MS		 840 while ((u = m->cleanup_queue)) {
841 assert(u->in_cleanup_queue);
23a177ef 842
595ed347 843 unit_free(u);
23a177ef
LP		 844 n++;
845 }
846
847 return n;
848}
849
eced69b3 850enum {
35b8ca3a 851 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
eced69b3
LP		 852 GC_OFFSET_UNSURE, /* No clue */
853 GC_OFFSET_GOOD, /* We still need this unit */
854 GC_OFFSET_BAD, /* We don't need this unit anymore */
855 _GC_OFFSET_MAX
856};
857
4892084f
LN		 858static void unit_gc_mark_good(Unit *u, unsigned gc_marker)
859{
860 Iterator i;
861 Unit *other;
862
863 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
864
865 /* Recursively mark referenced units as GOOD as well */
866 SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i)
867 if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE)
868 unit_gc_mark_good(other, gc_marker);
869}
870
eced69b3 871static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
701cc384
LP		 872 Iterator i;
873 Unit *other;
eced69b3 874 bool is_bad;
701cc384
LP		 875
876 assert(u);
877
ac155bb8
MS		 878 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
879 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
4892084f 880 u->gc_marker == gc_marker + GC_OFFSET_UNSURE ||
ac155bb8 881 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
701cc384
LP		 882 return;
883
ac155bb8 884 if (u->in_cleanup_queue)
701cc384
LP		 885 goto bad;
886
887 if (unit_check_gc(u))
888 goto good;
889
ac155bb8 890 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
eced69b3
LP		 891
892 is_bad = true;
893
ac155bb8 894 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
701cc384
LP		 895 unit_gc_sweep(other, gc_marker);
896
ac155bb8 897 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
701cc384 898 goto good;
eced69b3 899
ac155bb8 900 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
eced69b3 901 is_bad = false;
701cc384
LP		 902 }
903
eced69b3
LP		 904 if (is_bad)
905 goto bad;
906
907 /* We were unable to find anything out about this entry, so
908 * let's investigate it later */
ac155bb8 909 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
eced69b3
LP		 910 unit_add_to_gc_queue(u);
911 return;
912
701cc384 913bad:
eced69b3
LP		 914 /* We definitely know that this one is not useful anymore, so
915 * let's mark it for deletion */
ac155bb8 916 u->gc_marker = gc_marker + GC_OFFSET_BAD;
eced69b3 917 unit_add_to_cleanup_queue(u);
701cc384
LP		 918 return;
919
920good:
4892084f 921 unit_gc_mark_good(u, gc_marker);
701cc384
LP		 922}
923
924static unsigned manager_dispatch_gc_queue(Manager *m) {
595ed347 925 Unit *u;
701cc384 926 unsigned n = 0;
eced69b3 927 unsigned gc_marker;
701cc384
LP		 928
929 assert(m);
930
cf1265e1 931 /* log_debug("Running GC..."); */
701cc384 932
eced69b3
LP		 933 m->gc_marker += _GC_OFFSET_MAX;
934 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
c9c0cadb 935 m->gc_marker = 1;
701cc384 936
eced69b3
LP		 937 gc_marker = m->gc_marker;
938
595ed347
MS		 939 while ((u = m->gc_queue)) {
940 assert(u->in_gc_queue);
701cc384 941
595ed347 942 unit_gc_sweep(u, gc_marker);
eced69b3 943
71fda00f 944 LIST_REMOVE(gc_queue, m->gc_queue, u);
595ed347 945 u->in_gc_queue = false;
701cc384
LP		 946
947 n++;
948
595ed347
MS		 949 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
950 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
cc3bc3e6 951 if (u->id)
f2341e0a 952 log_unit_debug(u, "Collecting.");
595ed347
MS		 953 u->gc_marker = gc_marker + GC_OFFSET_BAD;
954 unit_add_to_cleanup_queue(u);
701cc384
LP		 955 }
956 }
957
958 m->n_in_gc_queue = 0;
701cc384
LP		 959
960 return n;
961}
962
a16e1123 963static void manager_clear_jobs_and_units(Manager *m) {
a16e1123 964 Unit *u;
60918275
LP		 965
966 assert(m);
967
87f0e418
LP		 968 while ((u = hashmap_first(m->units)))
969 unit_free(u);
964e0949
LP		 970
971 manager_dispatch_cleanup_queue(m);
972
973 assert(!m->load_queue);
974 assert(!m->run_queue);
975 assert(!m->dbus_unit_queue);
976 assert(!m->dbus_job_queue);
977 assert(!m->cleanup_queue);
978 assert(!m->gc_queue);
979
964e0949
LP		 980 assert(hashmap_isempty(m->jobs));
981 assert(hashmap_isempty(m->units));
9e9e2b72
MS		 982
983 m->n_on_console = 0;
984 m->n_running_jobs = 0;
a16e1123
LP		 985}
986
06d8d842 987Manager* manager_free(Manager *m) {
a16e1123 988 UnitType c;
c93ff2e9 989 int i;
87f0e418 990
06d8d842
ZJS		 991 if (!m)
992 return NULL;
a16e1123
LP		 993
994 manager_clear_jobs_and_units(m);
23a177ef 995
7824bbeb
LP		 996 for (c = 0; c < _UNIT_TYPE_MAX; c++)
997 if (unit_vtable[c]->shutdown)
998 unit_vtable[c]->shutdown(m);
999
a16e1123
LP		 1000 /* If we reexecute ourselves, we keep the root cgroup
1001 * around */
c6c18be3 1002 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
8e274523 1003
07a78643 1004 lookup_paths_flush_generator(&m->lookup_paths);
5a1e9937 1005
5e8d1c9a 1006 bus_done(m);
ea430986 1007
87f0e418 1008 hashmap_free(m->units);
60918275 1009 hashmap_free(m->jobs);
5ba6985b
LP		 1010 hashmap_free(m->watch_pids1);
1011 hashmap_free(m->watch_pids2);
05e343b7 1012 hashmap_free(m->watch_bus);
9152c765 1013
95ae05c0 1014 set_free(m->startup_units);
f755e3b7
LP		 1015 set_free(m->failed_units);
1016
718db961
LP		 1017 sd_event_source_unref(m->signal_event_source);
1018 sd_event_source_unref(m->notify_event_source);
d8fdc620 1019 sd_event_source_unref(m->cgroups_agent_event_source);
718db961
LP		 1020 sd_event_source_unref(m->time_change_event_source);
1021 sd_event_source_unref(m->jobs_in_progress_event_source);
752b5905 1022 sd_event_source_unref(m->run_queue_event_source);
718db961 1023
03e334a1
LP		 1024 safe_close(m->signal_fd);
1025 safe_close(m->notify_fd);
d8fdc620 1026 safe_close(m->cgroups_agent_fd);
03e334a1
LP		 1027 safe_close(m->time_change_fd);
1028 safe_close(m->kdbus_fd);
718db961 1029
e46b13c8
ZJS		 1030 manager_close_ask_password(m);
1031
718db961
LP		 1032 manager_close_idle_pipe(m);
1033
9670d583 1034 udev_unref(m->udev);
718db961 1035 sd_event_unref(m->event);
60918275 1036
c952c6ec
LP		 1037 free(m->notify_socket);
1038
84e3543e 1039 lookup_paths_free(&m->lookup_paths);
1137a57c 1040 strv_free(m->environment);
036643a2 1041
4ad49000 1042 hashmap_free(m->cgroup_unit);
c6c18be3 1043 set_free_free(m->unit_path_cache);
33be102a 1044
664f88a7
LP		 1045 free(m->switch_root);
1046 free(m->switch_root_init);
1047
517d56b1 1048 for (i = 0; i < _RLIMIT_MAX; i++)
d9814c76 1049 m->rlimit[i] = mfree(m->rlimit[i]);
c93ff2e9 1050
a57f7e2c
LP		 1051 assert(hashmap_isempty(m->units_requiring_mounts_for));
1052 hashmap_free(m->units_requiring_mounts_for);
1053
60918275 1054 free(m);
06d8d842 1055 return NULL;
60918275
LP		 1056}
1057
ba64af90 1058void manager_enumerate(Manager *m) {
f50e0a01 1059 UnitType c;
f50e0a01
LP		 1060
1061 assert(m);
1062
a16e1123
LP		 1063 /* Let's ask every type to load all units from disk/kernel
1064 * that it might know */
0faacd47 1065 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
1c2e9646 1066 if (!unit_type_supported(c)) {
03afec3c 1067 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
0faacd47 1068 continue;
a57f7e2c 1069 }
f50e0a01 1070
0faacd47
LP		 1071 if (!unit_vtable[c]->enumerate)
1072 continue;
1073
ba64af90 1074 unit_vtable[c]->enumerate(m);
0faacd47
LP		 1075 }
1076
f50e0a01 1077 manager_dispatch_load_queue(m);
a16e1123
LP		 1078}
1079
007c6337 1080static void manager_coldplug(Manager *m) {
a16e1123
LP		 1081 Iterator i;
1082 Unit *u;
1083 char *k;
007c6337 1084 int r;
a16e1123
LP		 1085
1086 assert(m);
f50e0a01
LP		 1087
1088 /* Then, let's set up their initial state. */
1089 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1090
1091 /* ignore aliases */
ac155bb8 1092 if (u->id != k)
f50e0a01
LP		 1093 continue;
1094
007c6337
LP		 1095 r = unit_coldplug(u);
1096 if (r < 0)
1097 log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
f50e0a01 1098 }
a16e1123
LP		 1099}
1100
fe51822e
LP		 1101static void manager_build_unit_path_cache(Manager *m) {
1102 char **i;
fe51822e
LP		 1103 int r;
1104
1105 assert(m);
1106
1107 set_free_free(m->unit_path_cache);
1108
d5099efc 1109 m->unit_path_cache = set_new(&string_hash_ops);
874310b7 1110 if (!m->unit_path_cache) {
d063a527
LP		 1111 r = -ENOMEM;
1112 goto fail;
fe51822e
LP		 1113 }
1114
1115 /* This simply builds a list of files we know exist, so that
1116 * we don't always have to go to disk */
1117
a3c4eb07 1118 STRV_FOREACH(i, m->lookup_paths.search_path) {
d063a527 1119 _cleanup_closedir_ DIR *d = NULL;
fe51822e
LP		 1120 struct dirent *de;
1121
bd0af849
ZJS		 1122 d = opendir(*i);
1123 if (!d) {
874310b7 1124 if (errno != ENOENT)
d063a527 1125 log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i);
fe51822e
LP		 1126 continue;
1127 }
1128
d063a527 1129 FOREACH_DIRENT(de, d, r = -errno; goto fail) {
fe51822e
LP		 1130 char *p;
1131
b7def684 1132 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
44d91056 1133 if (!p) {
fe51822e
LP		 1134 r = -ENOMEM;
1135 goto fail;
1136 }
1137
ef42202a
ZJS		 1138 r = set_consume(m->unit_path_cache, p);
1139 if (r < 0)
fe51822e 1140 goto fail;
fe51822e 1141 }
fe51822e
LP		 1142 }
1143
1144 return;
1145
1146fail:
d063a527
LP		 1147 log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m");
1148 m->unit_path_cache = set_free_free(m->unit_path_cache);
fe51822e
LP		 1149}
1150
9ff1a6f1 1151static void manager_distribute_fds(Manager *m, FDSet *fds) {
9588bc32 1152 Iterator i;
9ff1a6f1 1153 Unit *u;
9588bc32
LP		 1154
1155 assert(m);
1156
1157 HASHMAP_FOREACH(u, m->units, i) {
1158
1159 if (fdset_size(fds) <= 0)
1160 break;
1161
9ff1a6f1
LP		 1162 if (!UNIT_VTABLE(u)->distribute_fds)
1163 continue;
9588bc32 1164
9ff1a6f1
LP		 1165 UNIT_VTABLE(u)->distribute_fds(u, fds);
1166 }
9588bc32
LP		 1167}
1168
a16e1123
LP		 1169int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1170 int r, q;
1171
1172 assert(m);
1173
4943d143 1174 r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
e801700e
ZJS		 1175 if (r < 0)
1176 return r;
5a1e9937 1177
39591351
LP		 1178 /* Make sure the transient directory always exists, so that it remains in the search path */
1179 r = mkdir_p_label(m->lookup_paths.transient, 0755);
1180 if (r < 0)
1181 return r;
1182
a3c4eb07
LP		 1183 dual_timestamp_get(&m->generators_start_timestamp);
1184 r = manager_run_generators(m);
1185 dual_timestamp_get(&m->generators_finish_timestamp);
07719a21
LP		 1186 if (r < 0)
1187 return r;
1188
a1453343 1189 lookup_paths_reduce(&m->lookup_paths);
fe51822e
LP		 1190 manager_build_unit_path_cache(m);
1191
9f611ad8
LP		 1192 /* If we will deserialize make sure that during enumeration
1193 * this is already known, so we increase the counter here
1194 * already */
1195 if (serialization)
313cefa1 1196 m->n_reloading++;
9f611ad8 1197
a16e1123 1198 /* First, enumerate what we can from all config files */
718db961 1199 dual_timestamp_get(&m->units_load_start_timestamp);
ba64af90 1200 manager_enumerate(m);
718db961 1201 dual_timestamp_get(&m->units_load_finish_timestamp);
a16e1123
LP		 1202
1203 /* Second, deserialize if there is something to deserialize */
1cd974ed
ZJS		 1204 if (serialization)
1205 r = manager_deserialize(m, serialization, fds);
a16e1123 1206
01e10de3
LP		 1207 /* Any fds left? Find some unit which wants them. This is
1208 * useful to allow container managers to pass some file
1209 * descriptors to us pre-initialized. This enables
1210 * socket-based activation of entire containers. */
9ff1a6f1 1211 manager_distribute_fds(m, fds);
01e10de3 1212
d86f9d52
LP		 1213 /* We might have deserialized the notify fd, but if we didn't
1214 * then let's create the bus now */
1cd974ed
ZJS		 1215 q = manager_setup_notify(m);
1216 if (q < 0 && r == 0)
1217 r = q;
d86f9d52 1218
d8fdc620
LP		 1219 q = manager_setup_cgroups_agent(m);
1220 if (q < 0 && r == 0)
1221 r = q;
1222
e3dd987c
LP		 1223 /* We might have deserialized the kdbus control fd, but if we
1224 * didn't, then let's create the bus now. */
e3dd987c 1225 manager_connect_bus(m, !!serialization);
8f8f05a9 1226 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
e3dd987c 1227
a16e1123 1228 /* Third, fire things up! */
007c6337 1229 manager_coldplug(m);
a16e1123 1230
9f611ad8 1231 if (serialization) {
a7556052 1232 assert(m->n_reloading > 0);
313cefa1 1233 m->n_reloading--;
71445ae7
LP		 1234
1235 /* Let's wait for the UnitNew/JobNew messages being
1236 * sent, before we notify that the reload is
1237 * finished */
1238 m->send_reloading_done = true;
9f611ad8
LP		 1239 }
1240
a16e1123 1241 return r;
f50e0a01
LP		 1242}
1243
4bd29fe5 1244int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) {
e5b5ae50 1245 int r;
7527cb52 1246 Transaction *tr;
e5b5ae50
LP		 1247
1248 assert(m);
1249 assert(type < _JOB_TYPE_MAX);
87f0e418 1250 assert(unit);
e5b5ae50 1251 assert(mode < _JOB_MODE_MAX);
60918275 1252
7358dc02
ZJS		 1253 if (mode == JOB_ISOLATE && type != JOB_START)
1254 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
c497c7a9 1255
7358dc02
ZJS		 1256 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1257 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
2528a7a6 1258
f2341e0a 1259 log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
9f04bd52 1260
c6497ccb 1261 type = job_type_collapse(type, unit);
e0209d83 1262
23ade460 1263 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
7527cb52
MS		 1264 if (!tr)
1265 return -ENOMEM;
11dd41ce 1266
4bd29fe5 1267 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false,
7527cb52 1268 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
b94fbd30 1269 mode == JOB_IGNORE_DEPENDENCIES, e);
7527cb52
MS		 1270 if (r < 0)
1271 goto tr_abort;
c497c7a9 1272
7527cb52
MS		 1273 if (mode == JOB_ISOLATE) {
1274 r = transaction_add_isolate_jobs(tr, m);
1275 if (r < 0)
1276 goto tr_abort;
1277 }
1278
1279 r = transaction_activate(tr, m, mode, e);
1280 if (r < 0)
1281 goto tr_abort;
e5b5ae50 1282
f2341e0a 1283 log_unit_debug(unit,
66870f90
ZJS		 1284 "Enqueued job %s/%s as %u", unit->id,
1285 job_type_to_string(type), (unsigned) tr->anchor_job->id);
f50e0a01 1286
e5b5ae50 1287 if (_ret)
b94fbd30 1288 *_ret = tr->anchor_job;
60918275 1289
7527cb52 1290 transaction_free(tr);
e5b5ae50 1291 return 0;
7527cb52
MS		 1292
1293tr_abort:
1294 transaction_abort(tr);
1295 transaction_free(tr);
1296 return r;
e5b5ae50 1297}
60918275 1298
53f18416 1299int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) {
28247076
LP		 1300 Unit *unit;
1301 int r;
1302
1303 assert(m);
1304 assert(type < _JOB_TYPE_MAX);
1305 assert(name);
1306 assert(mode < _JOB_MODE_MAX);
1307
c3090674
LP		 1308 r = manager_load_unit(m, name, NULL, NULL, &unit);
1309 if (r < 0)
28247076
LP		 1310 return r;
1311
53f18416
LP		 1312 return manager_add_job(m, type, unit, mode, e, ret);
1313}
1314
1315int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) {
4afd3348 1316 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
53f18416
LP		 1317 int r;
1318
1319 assert(m);
1320 assert(type < _JOB_TYPE_MAX);
1321 assert(name);
1322 assert(mode < _JOB_MODE_MAX);
1323
1324 r = manager_add_job_by_name(m, type, name, mode, &error, ret);
1325 if (r < 0)
1326 return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r));
1327
1328 return r;
28247076
LP		 1329}
1330
60918275
LP		 1331Job *manager_get_job(Manager *m, uint32_t id) {
1332 assert(m);
1333
1334 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1335}
1336
87f0e418 1337Unit *manager_get_unit(Manager *m, const char *name) {
60918275
LP		 1338 assert(m);
1339 assert(name);
1340
87f0e418 1341 return hashmap_get(m->units, name);
60918275
LP		 1342}
1343
c1e1601e 1344unsigned manager_dispatch_load_queue(Manager *m) {
595ed347 1345 Unit *u;
c1e1601e 1346 unsigned n = 0;
60918275
LP		 1347
1348 assert(m);
1349
223dabab
LP		 1350 /* Make sure we are not run recursively */
1351 if (m->dispatching_load_queue)
c1e1601e 1352 return 0;
223dabab
LP		 1353
1354 m->dispatching_load_queue = true;
1355
87f0e418 1356 /* Dispatches the load queue. Takes a unit from the queue and
60918275
LP		 1357 * tries to load its data until the queue is empty */
1358
595ed347
MS		 1359 while ((u = m->load_queue)) {
1360 assert(u->in_load_queue);
034c6ed7 1361
595ed347 1362 unit_load(u);
c1e1601e 1363 n++;
60918275
LP		 1364 }
1365
223dabab 1366 m->dispatching_load_queue = false;
c1e1601e 1367 return n;
60918275
LP		 1368}
1369
c2756a68
LP		 1370int manager_load_unit_prepare(
1371 Manager *m,
1372 const char *name,
1373 const char *path,
718db961 1374 sd_bus_error *e,
c2756a68
LP		 1375 Unit **_ret) {
1376
87f0e418 1377 Unit *ret;
7d17cfbc 1378 UnitType t;
60918275
LP		 1379 int r;
1380
1381 assert(m);
9e2f7c11 1382 assert(name || path);
60918275 1383
db06e3b6
LP		 1384 /* This will prepare the unit for loading, but not actually
1385 * load anything from disk. */
0301abf4 1386
718db961
LP		 1387 if (path && !is_path(path))
1388 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
9e2f7c11
LP		 1389
1390 if (!name)
2b6bf07d 1391 name = basename(path);
9e2f7c11 1392
7d17cfbc
MS		 1393 t = unit_name_to_type(name);
1394
5d512d54
LN		 1395 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) {
1396 if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE))
1397 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name);
1398
718db961 1399 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
5d512d54 1400 }
60918275 1401
7d17cfbc
MS		 1402 ret = manager_get_unit(m, name);
1403 if (ret) {
034c6ed7 1404 *_ret = ret;
413d6313 1405 return 1;
034c6ed7 1406 }
60918275 1407
7d17cfbc
MS		 1408 ret = unit_new(m, unit_vtable[t]->object_size);
1409 if (!ret)
60918275
LP		 1410 return -ENOMEM;
1411
7d17cfbc 1412 if (path) {
ac155bb8
MS		 1413 ret->fragment_path = strdup(path);
1414 if (!ret->fragment_path) {
0301abf4
LP		 1415 unit_free(ret);
1416 return -ENOMEM;
1417 }
7d17cfbc 1418 }
0301abf4 1419
1058cbf2
ZJS		 1420 r = unit_add_name(ret, name);
1421 if (r < 0) {
87f0e418 1422 unit_free(ret);
1ffba6fe 1423 return r;
60918275
LP		 1424 }
1425
87f0e418 1426 unit_add_to_load_queue(ret);
c1e1601e 1427 unit_add_to_dbus_queue(ret);
949061f0 1428 unit_add_to_gc_queue(ret);
c1e1601e 1429
db06e3b6
LP		 1430 if (_ret)
1431 *_ret = ret;
1432
1433 return 0;
1434}
1435
c2756a68
LP		 1436int manager_load_unit(
1437 Manager *m,
1438 const char *name,
1439 const char *path,
718db961 1440 sd_bus_error *e,
c2756a68
LP		 1441 Unit **_ret) {
1442
db06e3b6
LP		 1443 int r;
1444
1445 assert(m);
1446
1447 /* This will load the service information files, but not actually
1448 * start any services or anything. */
1449
c3090674
LP		 1450 r = manager_load_unit_prepare(m, name, path, e, _ret);
1451 if (r != 0)
db06e3b6
LP		 1452 return r;
1453
f50e0a01 1454 manager_dispatch_load_queue(m);
60918275 1455
9e2f7c11 1456 if (_ret)
413d6313 1457 *_ret = unit_follow_merge(*_ret);
9e2f7c11 1458
60918275
LP		 1459 return 0;
1460}
a66d02c3 1461
cea8e32e 1462void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1463 Iterator i;
a66d02c3
LP		 1464 Job *j;
1465
1466 assert(s);
1467 assert(f);
1468
034c6ed7 1469 HASHMAP_FOREACH(j, s->jobs, i)
cea8e32e 1470 job_dump(j, f, prefix);
a66d02c3
LP		 1471}
1472
87f0e418 1473void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1474 Iterator i;
87f0e418 1475 Unit *u;
11dd41ce 1476 const char *t;
a66d02c3
LP		 1477
1478 assert(s);
1479 assert(f);
1480
87f0e418 1481 HASHMAP_FOREACH_KEY(u, t, s->units, i)
ac155bb8 1482 if (u->id == t)
87f0e418 1483 unit_dump(u, f, prefix);
a66d02c3 1484}
7fad411c
LP		 1485
1486void manager_clear_jobs(Manager *m) {
1487 Job *j;
1488
1489 assert(m);
1490
7fad411c 1491 while ((j = hashmap_first(m->jobs)))
5273510e 1492 /* No need to recurse. We're cancelling all jobs. */
833f92ad 1493 job_finish_and_invalidate(j, JOB_CANCELED, false, false);
7fad411c 1494}
83c60c9f 1495
752b5905
LP		 1496static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1497 Manager *m = userdata;
83c60c9f 1498 Job *j;
034c6ed7 1499
752b5905
LP		 1500 assert(source);
1501 assert(m);
9152c765 1502
034c6ed7 1503 while ((j = m->run_queue)) {
ac1135be 1504 assert(j->installed);
034c6ed7
LP		 1505 assert(j->in_run_queue);
1506
1507 job_run_and_invalidate(j);
9152c765 1508 }
034c6ed7 1509
a0b64226 1510 if (m->n_running_jobs > 0)
03b717a3
MS		 1511 manager_watch_jobs_in_progress(m);
1512
31a7eb86
ZJS		 1513 if (m->n_on_console > 0)
1514 manager_watch_idle_pipe(m);
1515
752b5905 1516 return 1;
c1e1601e
LP		 1517}
1518
9588bc32 1519static unsigned manager_dispatch_dbus_queue(Manager *m) {
c1e1601e 1520 Job *j;
595ed347 1521 Unit *u;
c1e1601e
LP		 1522 unsigned n = 0;
1523
1524 assert(m);
1525
1526 if (m->dispatching_dbus_queue)
1527 return 0;
1528
1529 m->dispatching_dbus_queue = true;
1530
595ed347
MS		 1531 while ((u = m->dbus_unit_queue)) {
1532 assert(u->in_dbus_queue);
c1e1601e 1533
595ed347 1534 bus_unit_send_change_signal(u);
c1e1601e
LP		 1535 n++;
1536 }
1537
1538 while ((j = m->dbus_job_queue)) {
1539 assert(j->in_dbus_queue);
1540
1541 bus_job_send_change_signal(j);
1542 n++;
1543 }
1544
1545 m->dispatching_dbus_queue = false;
71445ae7
LP		 1546
1547 if (m->send_reloading_done) {
1548 m->send_reloading_done = false;
1549
718db961 1550 bus_manager_send_reloading(m, false);
71445ae7
LP		 1551 }
1552
718db961
LP		 1553 if (m->queued_message)
1554 bus_send_queued_message(m);
1555
c1e1601e 1556 return n;
9152c765
LP		 1557}
1558
d8fdc620
LP		 1559static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1560 Manager *m = userdata;
1561 char buf[PATH_MAX+1];
1562 ssize_t n;
1563
1564 n = recv(fd, buf, sizeof(buf), 0);
1565 if (n < 0)
1566 return log_error_errno(errno, "Failed to read cgroups agent message: %m");
1567 if (n == 0) {
1568 log_error("Got zero-length cgroups agent message, ignoring.");
1569 return 0;
1570 }
1571 if ((size_t) n >= sizeof(buf)) {
1572 log_error("Got overly long cgroups agent message, ignoring.");
1573 return 0;
1574 }
1575
1576 if (memchr(buf, 0, n)) {
1577 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
1578 return 0;
1579 }
1580 buf[n] = 0;
1581
1582 manager_notify_cgroup_empty(m, buf);
1583 bus_forward_agent_released(m, buf);
1584
1585 return 0;
1586}
1587
96d66d89 1588static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) {
5ba6985b
LP		 1589 _cleanup_strv_free_ char **tags = NULL;
1590
1591 assert(m);
1592 assert(u);
1593 assert(buf);
1594 assert(n > 0);
1595
1596 tags = strv_split(buf, "\n\r");
1597 if (!tags) {
1598 log_oom();
1599 return;
1600 }
1601
5ba6985b 1602 if (UNIT_VTABLE(u)->notify_message)
a354329f 1603 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
34959677
TG		 1604 else
1605 log_unit_debug(u, "Got notification message for unit. Ignoring.");
5ba6985b
LP		 1606}
1607
718db961 1608static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
3d0b8a55 1609
b215b0ed 1610 _cleanup_fdset_free_ FDSet *fds = NULL;
718db961 1611 Manager *m = userdata;
b215b0ed
DH		 1612 char buf[NOTIFY_BUFFER_MAX+1];
1613 struct iovec iovec = {
1614 .iov_base = buf,
1615 .iov_len = sizeof(buf)-1,
1616 };
1617 union {
1618 struct cmsghdr cmsghdr;
1619 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1620 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
1621 } control = {};
1622 struct msghdr msghdr = {
1623 .msg_iov = &iovec,
1624 .msg_iovlen = 1,
1625 .msg_control = &control,
1626 .msg_controllen = sizeof(control),
1627 };
1628
1629 struct cmsghdr *cmsg;
1630 struct ucred *ucred = NULL;
1631 bool found = false;
1632 Unit *u1, *u2, *u3;
1633 int r, *fd_array = NULL;
1634 unsigned n_fds = 0;
8c47c732
LP		 1635 ssize_t n;
1636
1637 assert(m);
718db961
LP		 1638 assert(m->notify_fd == fd);
1639
1640 if (revents != EPOLLIN) {
1641 log_warning("Got unexpected poll event for notify fd.");
1642 return 0;
1643 }
8c47c732 1644
b215b0ed
DH		 1645 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1646 if (n < 0) {
1647 if (errno == EAGAIN || errno == EINTR)
1648 return 0;
8c47c732 1649
b215b0ed
DH		 1650 return -errno;
1651 }
a354329f 1652
b215b0ed
DH		 1653 CMSG_FOREACH(cmsg, &msghdr) {
1654 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
a354329f 1655
b215b0ed
DH		 1656 fd_array = (int*) CMSG_DATA(cmsg);
1657 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
a354329f 1658
b215b0ed
DH		 1659 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1660 cmsg->cmsg_type == SCM_CREDENTIALS &&
1661 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
a354329f 1662
b215b0ed 1663 ucred = (struct ucred*) CMSG_DATA(cmsg);
a354329f 1664 }
b215b0ed 1665 }
a354329f 1666
b215b0ed
DH		 1667 if (n_fds > 0) {
1668 assert(fd_array);
a354329f 1669
b215b0ed
DH		 1670 r = fdset_new_array(&fds, fd_array, n_fds);
1671 if (r < 0) {
1672 close_many(fd_array, n_fds);
1673 return log_oom();
a354329f 1674 }
b215b0ed 1675 }
8c47c732 1676
b215b0ed
DH		 1677 if (!ucred || ucred->pid <= 0) {
1678 log_warning("Received notify message without valid credentials. Ignoring.");
1679 return 0;
1680 }
8c47c732 1681
b215b0ed
DH		 1682 if ((size_t) n >= sizeof(buf)) {
1683 log_warning("Received notify message exceeded maximum size. Ignoring.");
1684 return 0;
1685 }
8c47c732 1686
b215b0ed 1687 buf[n] = 0;
8c47c732 1688
b215b0ed
DH		 1689 /* Notify every unit that might be interested, but try
1690 * to avoid notifying the same one multiple times. */
1691 u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
1692 if (u1) {
1693 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
1694 found = true;
1695 }
5ba6985b 1696
b215b0ed
DH		 1697 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
1698 if (u2 && u2 != u1) {
1699 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
1700 found = true;
1701 }
5ba6985b 1702
b215b0ed
DH		 1703 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
1704 if (u3 && u3 != u2 && u3 != u1) {
1705 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
1706 found = true;
1707 }
8c47c732 1708
b215b0ed
DH		 1709 if (!found)
1710 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
a354329f 1711
b215b0ed
DH		 1712 if (fdset_size(fds) > 0)
1713 log_warning("Got auxiliary fds with notification message, closing all.");
8c47c732
LP		 1714
1715 return 0;
1716}
1717
96d66d89 1718static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
36f20ae3
KW		 1719 uint64_t iteration;
1720
5ba6985b
LP		 1721 assert(m);
1722 assert(u);
1723 assert(si);
1724
36f20ae3
KW		 1725 sd_event_get_iteration(m->event, &iteration);
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 1730
36f20ae3
KW		 1731 if (UNIT_VTABLE(u)->sigchld_event) {
1732 if (set_size(u->pids) <= 1 || iteration != u->sigchldgen) {
1733 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1734 u->sigchldgen = iteration;
1735 } else
1e706c8d 1736 log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids));
36f20ae3 1737 }
5ba6985b
LP		 1738}
1739
034c6ed7 1740static int manager_dispatch_sigchld(Manager *m) {
9152c765
LP		 1741 assert(m);
1742
1743 for (;;) {
b92bea5d 1744 siginfo_t si = {};
9152c765 1745
4112df16
LP		 1746 /* First we call waitd() for a PID and do not reap the
1747 * zombie. That way we can still access /proc/$PID for
1748 * it while it is a zombie. */
1749 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
acbb0225
LP		 1750
1751 if (errno == ECHILD)
1752 break;
1753
4112df16
LP		 1754 if (errno == EINTR)
1755 continue;
1756
9152c765 1757 return -errno;
acbb0225 1758 }
9152c765 1759
4112df16 1760 if (si.si_pid <= 0)
9152c765
LP		 1761 break;
1762
15d5d9d9 1763 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
7fd1b19b 1764 _cleanup_free_ char *name = NULL;
70af4d17 1765 Unit *u1, *u2, *u3;
4112df16 1766
87d2c1ff 1767 get_process_comm(si.si_pid, &name);
4112df16 1768
5ba6985b
LP		 1769 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1770 si.si_pid, strna(name),
1771 sigchld_code_to_string(si.si_code),
1772 si.si_status,
1773 strna(si.si_code == CLD_EXITED
1774 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1775 : signal_to_string(si.si_status)));
1776
1777 /* And now figure out the unit this belongs
1778 * to, it might be multiple... */
b3ac818b 1779 u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
70af4d17
LP		 1780 if (u1)
1781 invoke_sigchld_event(m, u1, &si);
fea72cc0 1782 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1783 if (u2 && u2 != u1)
1784 invoke_sigchld_event(m, u2, &si);
fea72cc0 1785 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1786 if (u3 && u3 != u2 && u3 != u1)
1787 invoke_sigchld_event(m, u3, &si);
5ba6985b 1788 }
8c47c732 1789
4112df16
LP		 1790 /* And now, we actually reap the zombie. */
1791 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1792 if (errno == EINTR)
1793 continue;
1794
1795 return -errno;
1796 }
9152c765
LP		 1797 }
1798
1799 return 0;
1800}
1801
7d793605 1802static int manager_start_target(Manager *m, const char *name, JobMode mode) {
4afd3348 1803 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
28247076 1804 int r;
398ef8ba 1805
f2341e0a 1806 log_debug("Activating special unit %s", name);
1e001f52 1807
4bd29fe5 1808 r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL);
bd0af849 1809 if (r < 0)
f2341e0a 1810 log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
a1b256b0
LP		 1811
1812 return r;
28247076
LP		 1813}
1814
718db961
LP		 1815static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1816 Manager *m = userdata;
9152c765
LP		 1817 ssize_t n;
1818 struct signalfd_siginfo sfsi;
1819 bool sigchld = false;
dacd6cee 1820 int r;
9152c765
LP		 1821
1822 assert(m);
718db961
LP		 1823 assert(m->signal_fd == fd);
1824
1825 if (revents != EPOLLIN) {
1826 log_warning("Got unexpected events from signal file descriptor.");
1827 return 0;
1828 }
9152c765
LP		 1829
1830 for (;;) {
718db961 1831 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
57cb4adf 1832 if (n != sizeof(sfsi)) {
9152c765
LP		 1833
1834 if (n >= 0)
1835 return -EIO;
1836
63090775 1837 if (errno == EINTR || errno == EAGAIN)
acbb0225 1838 break;
9152c765
LP		 1839
1840 return -errno;
1841 }
1842
4daf54a8 1843 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
463d0d15 1844 (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m))
4daf54a8
ZJS		 1845 ? LOG_DEBUG : LOG_INFO,
1846 &sfsi);
1e001f52 1847
b9cd2ec1
LP		 1848 switch (sfsi.ssi_signo) {
1849
4112df16 1850 case SIGCHLD:
9152c765 1851 sigchld = true;
b9cd2ec1
LP		 1852 break;
1853
6632c602 1854 case SIGTERM:
463d0d15 1855 if (MANAGER_IS_SYSTEM(m)) {
db06e3b6
LP		 1856 /* This is for compatibility with the
1857 * original sysvinit */
e11dc4a2 1858 m->exit_code = MANAGER_REEXECUTE;
a1b256b0
LP		 1859 break;
1860 }
84e9af1e 1861
a1b256b0 1862 /* Fall through */
e11dc4a2
LP		 1863
1864 case SIGINT:
463d0d15 1865 if (MANAGER_IS_SYSTEM(m)) {
2e5c94b9 1866
d1f6b1b4
LP		 1867 /* If the user presses C-A-D more than
1868 * 7 times within 2s, we reboot
2e5c94b9
LP		 1869 * immediately. */
1870
1871 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1872 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1873 else {
1874 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
a626df3e 1875 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
2e5c94b9
LP		 1876 m->exit_code = MANAGER_REBOOT;
1877 }
1878
84e9af1e
LP		 1879 break;
1880 }
1881
a1b256b0 1882 /* Run the exit target if there is one, if not, just exit. */
0003d1ab 1883 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
a1b256b0
LP		 1884 m->exit_code = MANAGER_EXIT;
1885 return 0;
1886 }
1887
1888 break;
84e9af1e 1889
28247076 1890 case SIGWINCH:
463d0d15 1891 if (MANAGER_IS_SYSTEM(m))
7d793605 1892 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
84e9af1e 1893
28247076
LP		 1894 /* This is a nop on non-init */
1895 break;
84e9af1e 1896
28247076 1897 case SIGPWR:
463d0d15 1898 if (MANAGER_IS_SYSTEM(m))
7d793605 1899 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
84e9af1e 1900
28247076 1901 /* This is a nop on non-init */
84e9af1e 1902 break;
6632c602 1903
1005d14f 1904 case SIGUSR1: {
57ee42ce
LP		 1905 Unit *u;
1906
1907 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1908
1909 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1910 log_info("Trying to reconnect to bus...");
3996fbe2 1911 bus_init(m, true);
57ee42ce
LP		 1912 }
1913
1914 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1915 log_info("Loading D-Bus service...");
7d793605 1916 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
57ee42ce
LP		 1917 }
1918
1919 break;
1920 }
1921
2149e37c 1922 case SIGUSR2: {
718db961
LP		 1923 _cleanup_free_ char *dump = NULL;
1924 _cleanup_fclose_ FILE *f = NULL;
2149e37c
LP		 1925 size_t size;
1926
718db961
LP		 1927 f = open_memstream(&dump, &size);
1928 if (!f) {
dacd6cee 1929 log_warning_errno(errno, "Failed to allocate memory stream: %m");
2149e37c
LP		 1930 break;
1931 }
1932
1933 manager_dump_units(m, f, "\t");
1934 manager_dump_jobs(m, f, "\t");
1935
dacd6cee
LP		 1936 r = fflush_and_check(f);
1937 if (r < 0) {
1938 log_warning_errno(r, "Failed to write status stream: %m");
b2cdc666
DM		 1939 break;
1940 }
1941
2149e37c 1942 log_dump(LOG_INFO, dump);
1005d14f 1943 break;
2149e37c 1944 }
1005d14f 1945
a16e1123
LP		 1946 case SIGHUP:
1947 m->exit_code = MANAGER_RELOAD;
1948 break;
1949
7d793605 1950 default: {
253ee27a 1951
0003d1ab
LP		 1952 /* Starting SIGRTMIN+0 */
1953 static const char * const target_table[] = {
7d793605
LP		 1954 [0] = SPECIAL_DEFAULT_TARGET,
1955 [1] = SPECIAL_RESCUE_TARGET,
f057408c 1956 [2] = SPECIAL_EMERGENCY_TARGET,
7d793605
LP		 1957 [3] = SPECIAL_HALT_TARGET,
1958 [4] = SPECIAL_POWEROFF_TARGET,
0003d1ab
LP		 1959 [5] = SPECIAL_REBOOT_TARGET,
1960 [6] = SPECIAL_KEXEC_TARGET
1961 };
1962
1963 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1964 static const ManagerExitCode code_table[] = {
1965 [0] = MANAGER_HALT,
1966 [1] = MANAGER_POWEROFF,
1967 [2] = MANAGER_REBOOT,
1968 [3] = MANAGER_KEXEC
7d793605
LP		 1969 };
1970
1971 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
0003d1ab 1972 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
764e9b5f
MS		 1973 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1974 manager_start_target(m, target_table[idx],
1975 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
7d793605
LP		 1976 break;
1977 }
1978
0003d1ab
LP		 1979 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1980 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1981 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1982 break;
1983 }
1984
0658666b
LP		 1985 switch (sfsi.ssi_signo - SIGRTMIN) {
1986
1987 case 20:
d450b6f2 1988 manager_set_show_status(m, SHOW_STATUS_YES);
0658666b
LP		 1989 break;
1990
1991 case 21:
d450b6f2 1992 manager_set_show_status(m, SHOW_STATUS_NO);
0658666b
LP		 1993 break;
1994
253ee27a
LP		 1995 case 22:
1996 log_set_max_level(LOG_DEBUG);
4cee3a78 1997 log_info("Setting log level to debug.");
253ee27a
LP		 1998 break;
1999
2000 case 23:
2001 log_set_max_level(LOG_INFO);
4cee3a78 2002 log_info("Setting log level to info.");
253ee27a
LP		 2003 break;
2004
600b704e 2005 case 24:
463d0d15 2006 if (MANAGER_IS_USER(m)) {
600b704e
LP		 2007 m->exit_code = MANAGER_EXIT;
2008 return 0;
2009 }
2010
2011 /* This is a nop on init */
2012 break;
2013
4cfa2c99 2014 case 26:
c1dc6153 2015 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
4cfa2c99
LP		 2016 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2017 log_notice("Setting log target to journal-or-kmsg.");
2018 break;
2019
253ee27a
LP		 2020 case 27:
2021 log_set_target(LOG_TARGET_CONSOLE);
2022 log_notice("Setting log target to console.");
2023 break;
2024
2025 case 28:
2026 log_set_target(LOG_TARGET_KMSG);
2027 log_notice("Setting log target to kmsg.");
2028 break;
2029
0658666b 2030 default:
4e240ab0 2031 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
0658666b 2032 }
b9cd2ec1 2033 }
7d793605 2034 }
9152c765
LP		 2035 }
2036
2037 if (sigchld)
7b77ed8c 2038 manager_dispatch_sigchld(m);
034c6ed7
LP		 2039
2040 return 0;
2041}
2042
718db961
LP		 2043static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2044 Manager *m = userdata;
2045 Iterator i;
2046 Unit *u;
034c6ed7
LP		 2047
2048 assert(m);
718db961 2049 assert(m->time_change_fd == fd);
034c6ed7 2050
718db961 2051 log_struct(LOG_INFO,
e2cc6eca
LP		 2052 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
2053 LOG_MESSAGE("Time has been changed"),
718db961 2054 NULL);
034c6ed7 2055
718db961
LP		 2056 /* Restart the watch */
2057 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
03e334a1 2058 m->time_change_fd = safe_close(m->time_change_fd);
ef734fd6 2059
718db961 2060 manager_setup_time_change(m);
4e434314 2061
718db961
LP		 2062 HASHMAP_FOREACH(u, m->units, i)
2063 if (UNIT_VTABLE(u)->time_change)
2064 UNIT_VTABLE(u)->time_change(u);
ea430986 2065
718db961
LP		 2066 return 0;
2067}
ea430986 2068
718db961
LP		 2069static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2070 Manager *m = userdata;
8742514c 2071
718db961
LP		 2072 assert(m);
2073 assert(m->idle_pipe[2] == fd);
8742514c 2074
718db961 2075 m->no_console_output = m->n_on_console > 0;
03b717a3 2076
718db961 2077 manager_close_idle_pipe(m);
03b717a3 2078
718db961
LP		 2079 return 0;
2080}
31a7eb86 2081
718db961
LP		 2082static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
2083 Manager *m = userdata;
fd08a840
ZJS		 2084 int r;
2085 uint64_t next;
31a7eb86 2086
718db961 2087 assert(m);
fd08a840 2088 assert(source);
9152c765 2089
718db961 2090 manager_print_jobs_in_progress(m);
fd08a840
ZJS		 2091
2092 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
2093 r = sd_event_source_set_time(source, next);
2094 if (r < 0)
2095 return r;
2096
2097 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
9152c765
LP		 2098}
2099
2100int manager_loop(Manager *m) {
2101 int r;
9152c765 2102
fac9f8df 2103 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
ea430986 2104
9152c765 2105 assert(m);
f755e3b7 2106 m->exit_code = MANAGER_OK;
9152c765 2107
fe51822e 2108 /* Release the path cache */
97044145 2109 m->unit_path_cache = set_free_free(m->unit_path_cache);
fe51822e 2110
b0c918b9
LP		 2111 manager_check_finished(m);
2112
a4312405 2113 /* There might still be some zombies hanging around from
f3669545 2114 * before we were exec()'ed. Let's reap them. */
e96d6be7
LP		 2115 r = manager_dispatch_sigchld(m);
2116 if (r < 0)
a4312405
LP		 2117 return r;
2118
f755e3b7 2119 while (m->exit_code == MANAGER_OK) {
718db961 2120 usec_t wait_usec;
9152c765 2121
463d0d15 2122 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m))
e96d6be7
LP		 2123 watchdog_ping();
2124
ea430986
LP		 2125 if (!ratelimit_test(&rl)) {
2126 /* Yay, something is going seriously wrong, pause a little */
2127 log_warning("Looping too fast. Throttling execution a little.");
2128 sleep(1);
2129 }
2130
37a8e683 2131 if (manager_dispatch_load_queue(m) > 0)
23a177ef
LP		 2132 continue;
2133
cf1265e1 2134 if (manager_dispatch_gc_queue(m) > 0)
701cc384
LP		 2135 continue;
2136
cf1265e1 2137 if (manager_dispatch_cleanup_queue(m) > 0)
c1e1601e 2138 continue;
034c6ed7 2139
cf1265e1 2140 if (manager_dispatch_cgroup_queue(m) > 0)
c1e1601e
LP		 2141 continue;
2142
c1e1601e 2143 if (manager_dispatch_dbus_queue(m) > 0)
ea430986 2144 continue;
ea430986 2145
c757a65b 2146 /* Sleep for half the watchdog time */
463d0d15 2147 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) {
718db961
LP		 2148 wait_usec = m->runtime_watchdog / 2;
2149 if (wait_usec <= 0)
2150 wait_usec = 1;
c757a65b 2151 } else
3a43da28 2152 wait_usec = USEC_INFINITY;
9152c765 2153
718db961 2154 r = sd_event_run(m->event, wait_usec);
23bbb0de
MS		 2155 if (r < 0)
2156 return log_error_errno(r, "Failed to run event loop: %m");
a16e1123 2157 }
957ca890 2158
a16e1123 2159 return m->exit_code;
83c60c9f 2160}
ea430986 2161
718db961 2162int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
ede3a796 2163 _cleanup_free_ char *n = NULL;
ea430986 2164 Unit *u;
80fbf05e 2165 int r;
ea430986
LP		 2166
2167 assert(m);
2168 assert(s);
2169 assert(_u);
2170
ede3a796
LP		 2171 r = unit_name_from_dbus_path(s, &n);
2172 if (r < 0)
2173 return r;
ea430986 2174
80fbf05e 2175 r = manager_load_unit(m, n, NULL, e, &u);
80fbf05e
MS		 2176 if (r < 0)
2177 return r;
ea430986
LP		 2178
2179 *_u = u;
2180
2181 return 0;
2182}
86fbf370
LP		 2183
2184int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
718db961 2185 const char *p;
86fbf370 2186 unsigned id;
718db961 2187 Job *j;
86fbf370
LP		 2188 int r;
2189
2190 assert(m);
2191 assert(s);
2192 assert(_j);
2193
718db961
LP		 2194 p = startswith(s, "/org/freedesktop/systemd1/job/");
2195 if (!p)
86fbf370
LP		 2196 return -EINVAL;
2197
718db961 2198 r = safe_atou(p, &id);
8742514c 2199 if (r < 0)
86fbf370
LP		 2200 return r;
2201
8742514c
LP		 2202 j = manager_get_job(m, id);
2203 if (!j)
86fbf370
LP		 2204 return -ENOENT;
2205
2206 *_j = j;
2207
2208 return 0;
2209}
dfcd764e 2210
4927fcae 2211void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
e537352b 2212
4927fcae 2213#ifdef HAVE_AUDIT
2ba11090 2214 _cleanup_free_ char *p = NULL;
0aa281df 2215 const char *msg;
7410616c 2216 int audit_fd, r;
e537352b 2217
463d0d15 2218 if (!MANAGER_IS_SYSTEM(m))
a1a078ee
LP		 2219 return;
2220
c1165f82
LP		 2221 audit_fd = get_audit_fd();
2222 if (audit_fd < 0)
e537352b
LP		 2223 return;
2224
bbd3a7ba
LP		 2225 /* Don't generate audit events if the service was already
2226 * started and we're just deserializing */
2c289ea8 2227 if (MANAGER_IS_RELOADING(m))
bbd3a7ba
LP		 2228 return;
2229
ac155bb8 2230 if (u->type != UNIT_SERVICE)
f1dd0c3f
LP		 2231 return;
2232
7410616c
LP		 2233 r = unit_name_to_prefix_and_instance(u->id, &p);
2234 if (r < 0) {
2235 log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
e537352b
LP		 2236 return;
2237 }
2238
63c372cb 2239 msg = strjoina("unit=", p);
0aa281df
LP		 2240 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2241 if (errno == EPERM)
391ade86 2242 /* We aren't allowed to send audit messages?
44785992 2243 * Then let's not retry again. */
c1165f82 2244 close_audit_fd();
0aa281df 2245 else
56f64d95 2246 log_warning_errno(errno, "Failed to send audit message: %m");
391ade86 2247 }
4927fcae 2248#endif
e537352b 2249
e537352b
LP		 2250}
2251
e983b760 2252void manager_send_unit_plymouth(Manager *m, Unit *u) {
fc2fffe7 2253 static const union sockaddr_union sa = PLYMOUTH_SOCKET;
2ba11090
ZJS		 2254 _cleanup_free_ char *message = NULL;
2255 _cleanup_close_ int fd = -1;
fc2fffe7 2256 int n = 0;
e983b760
LP		 2257
2258 /* Don't generate plymouth events if the service was already
2259 * started and we're just deserializing */
2c289ea8 2260 if (MANAGER_IS_RELOADING(m))
e983b760
LP		 2261 return;
2262
463d0d15 2263 if (!MANAGER_IS_SYSTEM(m))
e983b760
LP		 2264 return;
2265
75f86906 2266 if (detect_container() > 0)
3772995a
LP		 2267 return;
2268
ac155bb8
MS		 2269 if (u->type != UNIT_SERVICE &&
2270 u->type != UNIT_MOUNT &&
2271 u->type != UNIT_SWAP)
e983b760
LP		 2272 return;
2273
2274 /* We set SOCK_NONBLOCK here so that we rather drop the
2275 * message then wait for plymouth */
e62d8c39
ZJS		 2276 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2277 if (fd < 0) {
56f64d95 2278 log_error_errno(errno, "socket() failed: %m");
e983b760
LP		 2279 return;
2280 }
2281
fc2fffe7 2282 if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) {
e983b760 2283
2ba11090 2284 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2285 log_error_errno(errno, "connect() failed: %m");
2ba11090 2286 return;
e983b760
LP		 2287 }
2288
ac155bb8 2289 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
0d0f0c50 2290 log_oom();
2ba11090 2291 return;
e983b760
LP		 2292 }
2293
2294 errno = 0;
2ba11090
ZJS		 2295 if (write(fd, message, n + 1) != n + 1)
2296 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2297 log_error_errno(errno, "Failed to write Plymouth message: %m");
e983b760
LP		 2298}
2299
d8d5ab98 2300int manager_open_serialization(Manager *m, FILE **_f) {
8e33886e 2301 const char *path;
df28bc08 2302 int fd = -1;
a16e1123
LP		 2303 FILE *f;
2304
2305 assert(_f);
2306
463d0d15 2307 path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp";
03532f0a 2308 fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
d86f9d52 2309 if (fd < 0)
a16e1123 2310 return -errno;
a16e1123 2311
a16e1123 2312 log_debug("Serializing state to %s", path);
a16e1123 2313
01e10de3 2314 f = fdopen(fd, "w+");
d86f9d52 2315 if (!f) {
03e334a1 2316 safe_close(fd);
a16e1123 2317 return -errno;
d86f9d52 2318 }
a16e1123
LP		 2319
2320 *_f = f;
2321
2322 return 0;
2323}
2324
b3680f49 2325int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
a16e1123
LP		 2326 Iterator i;
2327 Unit *u;
2328 const char *t;
4a9fd066 2329 char **e;
a16e1123
LP		 2330 int r;
2331
2332 assert(m);
2333 assert(f);
2334 assert(fds);
2335
313cefa1 2336 m->n_reloading++;
38c52d46 2337
1fa2f38f 2338 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
01d67b43 2339 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
33c5fae9
LP		 2340 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2341 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
01d67b43 2342
915b3753 2343 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
915b3753 2344 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
718db961 2345 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
e9ddabc2 2346 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
f38ed060 2347
26a1efdf 2348 if (!in_initrd()) {
915b3753 2349 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
f38ed060 2350 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
718db961
LP		 2351 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2352 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2353 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2354 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2355 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2356 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
f38ed060 2357 }
47a483a1 2358
b3680f49
HH		 2359 if (!switching_root) {
2360 STRV_FOREACH(e, m->environment) {
2361 _cleanup_free_ char *ce;
4a9fd066 2362
b3680f49 2363 ce = cescape(*e);
e3dd987c
LP		 2364 if (!ce)
2365 return -ENOMEM;
2366
2367 fprintf(f, "env=%s\n", *e);
b3680f49 2368 }
4a9fd066
OS		 2369 }
2370
d86f9d52
LP		 2371 if (m->notify_fd >= 0) {
2372 int copy;
2373
2374 copy = fdset_put_dup(fds, m->notify_fd);
2375 if (copy < 0)
2376 return copy;
2377
2378 fprintf(f, "notify-fd=%i\n", copy);
2379 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2380 }
2381
d8fdc620
LP		 2382 if (m->cgroups_agent_fd >= 0) {
2383 int copy;
2384
2385 copy = fdset_put_dup(fds, m->cgroups_agent_fd);
2386 if (copy < 0)
2387 return copy;
2388
2389 fprintf(f, "cgroups-agent-fd=%i\n", copy);
2390 }
2391
e3dd987c
LP		 2392 if (m->kdbus_fd >= 0) {
2393 int copy;
2394
2395 copy = fdset_put_dup(fds, m->kdbus_fd);
2396 if (copy < 0)
2397 return copy;
2398
2399 fprintf(f, "kdbus-fd=%i\n", copy);
2400 }
2401
8f8f05a9 2402 bus_track_serialize(m->subscribed, f);
6fa48533 2403
f2382a94
LP		 2404 fputc('\n', f);
2405
a16e1123 2406 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
ac155bb8 2407 if (u->id != t)
a16e1123
LP		 2408 continue;
2409
a16e1123 2410 /* Start marker */
ac155bb8 2411 fputs(u->id, f);
a16e1123
LP		 2412 fputc('\n', f);
2413
6fa48533
LP		 2414 r = unit_serialize(u, f, fds, !switching_root);
2415 if (r < 0) {
313cefa1 2416 m->n_reloading--;
a16e1123 2417 return r;
38c52d46 2418 }
a16e1123
LP		 2419 }
2420
a7556052 2421 assert(m->n_reloading > 0);
313cefa1 2422 m->n_reloading--;
38c52d46 2423
a16e1123
LP		 2424 if (ferror(f))
2425 return -EIO;
2426
b23de6af
LP		 2427 r = bus_fdset_add_all(m, fds);
2428 if (r < 0)
2429 return r;
2430
a16e1123
LP		 2431 return 0;
2432}
2433
2434int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2435 int r = 0;
2436
2437 assert(m);
2438 assert(f);
2439
2440 log_debug("Deserializing state...");
2441
313cefa1 2442 m->n_reloading++;
82c64bf5 2443
10f8e83c 2444 for (;;) {
20c03b7b 2445 char line[LINE_MAX], *l;
10f8e83c
LP		 2446
2447 if (!fgets(line, sizeof(line), f)) {
2448 if (feof(f))
2449 r = 0;
2450 else
2451 r = -errno;
2452
2453 goto finish;
2454 }
2455
2456 char_array_0(line);
2457 l = strstrip(line);
2458
2459 if (l[0] == 0)
2460 break;
2461
01d67b43
LP		 2462 if (startswith(l, "current-job-id=")) {
2463 uint32_t id;
2464
2465 if (safe_atou32(l+15, &id) < 0)
e5035a27 2466 log_debug("Failed to parse current job id value %s", l+15);
01d67b43
LP		 2467 else
2468 m->current_job_id = MAX(m->current_job_id, id);
718db961 2469
33c5fae9
LP		 2470 } else if (startswith(l, "n-installed-jobs=")) {
2471 uint32_t n;
2472
2473 if (safe_atou32(l+17, &n) < 0)
e5035a27 2474 log_debug("Failed to parse installed jobs counter %s", l+17);
33c5fae9
LP		 2475 else
2476 m->n_installed_jobs += n;
718db961 2477
33c5fae9
LP		 2478 } else if (startswith(l, "n-failed-jobs=")) {
2479 uint32_t n;
2480
2481 if (safe_atou32(l+14, &n) < 0)
e5035a27 2482 log_debug("Failed to parse failed jobs counter %s", l+14);
33c5fae9
LP		 2483 else
2484 m->n_failed_jobs += n;
718db961 2485
01d67b43
LP		 2486 } else if (startswith(l, "taint-usr=")) {
2487 int b;
2488
e3dd987c
LP		 2489 b = parse_boolean(l+10);
2490 if (b < 0)
e5035a27 2491 log_debug("Failed to parse taint /usr flag %s", l+10);
01d67b43
LP		 2492 else
2493 m->taint_usr = m->taint_usr || b;
718db961 2494
915b3753
LP		 2495 } else if (startswith(l, "firmware-timestamp="))
2496 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2497 else if (startswith(l, "loader-timestamp="))
2498 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2499 else if (startswith(l, "kernel-timestamp="))
2500 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2501 else if (startswith(l, "initrd-timestamp="))
e9ddabc2 2502 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
915b3753
LP		 2503 else if (startswith(l, "userspace-timestamp="))
2504 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
10717a1a 2505 else if (startswith(l, "finish-timestamp="))
799fd0fd 2506 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
718db961
LP		 2507 else if (startswith(l, "security-start-timestamp="))
2508 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2509 else if (startswith(l, "security-finish-timestamp="))
2510 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2511 else if (startswith(l, "generators-start-timestamp="))
2512 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2513 else if (startswith(l, "generators-finish-timestamp="))
2514 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2515 else if (startswith(l, "units-load-start-timestamp="))
2516 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2517 else if (startswith(l, "units-load-finish-timestamp="))
2518 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
4a9fd066
OS		 2519 else if (startswith(l, "env=")) {
2520 _cleanup_free_ char *uce = NULL;
2521 char **e;
2522
527b7a42
LP		 2523 r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
2524 if (r < 0)
4a9fd066 2525 goto finish;
4a9fd066
OS		 2526
2527 e = strv_env_set(m->environment, uce);
2528 if (!e) {
2529 r = -ENOMEM;
2530 goto finish;
2531 }
2532
2533 strv_free(m->environment);
2534 m->environment = e;
e3dd987c 2535
d86f9d52
LP		 2536 } else if (startswith(l, "notify-fd=")) {
2537 int fd;
2538
2539 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2540 log_debug("Failed to parse notify fd: %s", l + 10);
d86f9d52 2541 else {
03e334a1
LP		 2542 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2543 safe_close(m->notify_fd);
d86f9d52
LP		 2544 m->notify_fd = fdset_remove(fds, fd);
2545 }
2546
2547 } else if (startswith(l, "notify-socket=")) {
2548 char *n;
2549
2550 n = strdup(l+14);
2551 if (!n) {
2552 r = -ENOMEM;
2553 goto finish;
2554 }
2555
2556 free(m->notify_socket);
2557 m->notify_socket = n;
2558
d8fdc620
LP		 2559 } else if (startswith(l, "cgroups-agent-fd=")) {
2560 int fd;
2561
2562 if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2563 log_debug("Failed to parse cgroups agent fd: %s", l + 10);
2564 else {
2565 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
2566 safe_close(m->cgroups_agent_fd);
2567 m->cgroups_agent_fd = fdset_remove(fds, fd);
2568 }
2569
e3dd987c
LP		 2570 } else if (startswith(l, "kdbus-fd=")) {
2571 int fd;
2572
8bf9fcf4 2573 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2574 log_debug("Failed to parse kdbus fd: %s", l + 9);
e3dd987c 2575 else {
03e334a1 2576 safe_close(m->kdbus_fd);
e3dd987c
LP		 2577 m->kdbus_fd = fdset_remove(fds, fd);
2578 }
2579
230314d7
LP		 2580 } else {
2581 int k;
2582
2583 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2584 if (k < 0)
2585 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2586 else if (k == 0)
2587 log_debug("Unknown serialization item '%s'", l);
2588 }
10f8e83c
LP		 2589 }
2590
a16e1123
LP		 2591 for (;;) {
2592 Unit *u;
2593 char name[UNIT_NAME_MAX+2];
2594
2595 /* Start marker */
2596 if (!fgets(name, sizeof(name), f)) {
2597 if (feof(f))
10f8e83c
LP		 2598 r = 0;
2599 else
2600 r = -errno;
a16e1123 2601
82c64bf5 2602 goto finish;
a16e1123
LP		 2603 }
2604
2605 char_array_0(name);
2606
bd0af849
ZJS		 2607 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2608 if (r < 0)
82c64bf5 2609 goto finish;
a16e1123 2610
01e10de3
LP		 2611 r = unit_deserialize(u, f, fds);
2612 if (r < 0)
82c64bf5 2613 goto finish;
a16e1123
LP		 2614 }
2615
10f8e83c 2616finish:
145b1f79 2617 if (ferror(f))
82c64bf5 2618 r = -EIO;
a16e1123 2619
a7556052 2620 assert(m->n_reloading > 0);
313cefa1 2621 m->n_reloading--;
82c64bf5
LP		 2622
2623 return r;
a16e1123
LP		 2624}
2625
2626int manager_reload(Manager *m) {
2627 int r, q;
51d122af
ZJS		 2628 _cleanup_fclose_ FILE *f = NULL;
2629 _cleanup_fdset_free_ FDSet *fds = NULL;
a16e1123
LP		 2630
2631 assert(m);
2632
07719a21
LP		 2633 r = manager_open_serialization(m, &f);
2634 if (r < 0)
a16e1123
LP		 2635 return r;
2636
313cefa1 2637 m->n_reloading++;
718db961 2638 bus_manager_send_reloading(m, true);
38c52d46 2639
07719a21
LP		 2640 fds = fdset_new();
2641 if (!fds) {
313cefa1 2642 m->n_reloading--;
51d122af 2643 return -ENOMEM;
a16e1123
LP		 2644 }
2645
b3680f49 2646 r = manager_serialize(m, f, fds, false);
07719a21 2647 if (r < 0) {
313cefa1 2648 m->n_reloading--;
51d122af 2649 return r;
38c52d46 2650 }
a16e1123
LP		 2651
2652 if (fseeko(f, 0, SEEK_SET) < 0) {
313cefa1 2653 m->n_reloading--;
51d122af 2654 return -errno;
a16e1123
LP		 2655 }
2656
2657 /* From here on there is no way back. */
2658 manager_clear_jobs_and_units(m);
07a78643 2659 lookup_paths_flush_generator(&m->lookup_paths);
84e3543e 2660 lookup_paths_free(&m->lookup_paths);
2ded0c04 2661
4943d143 2662 q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
e801700e
ZJS		 2663 if (q < 0 && r >= 0)
2664 r = q;
5a1e9937 2665
a3c4eb07
LP		 2666 /* Find new unit paths */
2667 q = manager_run_generators(m);
e801700e 2668 if (q < 0 && r >= 0)
07719a21
LP		 2669 r = q;
2670
a1453343 2671 lookup_paths_reduce(&m->lookup_paths);
5a1e9937
LP		 2672 manager_build_unit_path_cache(m);
2673
a16e1123 2674 /* First, enumerate what we can from all config files */
ba64af90 2675 manager_enumerate(m);
a16e1123
LP		 2676
2677 /* Second, deserialize our stored data */
07719a21 2678 q = manager_deserialize(m, f, fds);
e801700e 2679 if (q < 0 && r >= 0)
a16e1123
LP		 2680 r = q;
2681
2682 fclose(f);
2683 f = NULL;
2684
a2cc4a6c
ZJS		 2685 /* Re-register notify_fd as event source */
2686 q = manager_setup_notify(m);
e801700e 2687 if (q < 0 && r >= 0)
a2cc4a6c
ZJS		 2688 r = q;
2689
d8fdc620
LP		 2690 q = manager_setup_cgroups_agent(m);
2691 if (q < 0 && r >= 0)
2692 r = q;
2693
a16e1123 2694 /* Third, fire things up! */
007c6337 2695 manager_coldplug(m);
a16e1123 2696
8936a5e3
DM		 2697 /* Sync current state of bus names with our set of listening units */
2698 if (m->api_bus)
2699 manager_sync_bus_names(m, m->api_bus);
2700
a7556052
LP		 2701 assert(m->n_reloading > 0);
2702 m->n_reloading--;
9f611ad8 2703
71445ae7
LP		 2704 m->send_reloading_done = true;
2705
a16e1123
LP		 2706 return r;
2707}
2708
fdf20a31 2709void manager_reset_failed(Manager *m) {
5632e374
LP		 2710 Unit *u;
2711 Iterator i;
2712
2713 assert(m);
2714
2715 HASHMAP_FOREACH(u, m->units, i)
fdf20a31 2716 unit_reset_failed(u);
5632e374
LP		 2717}
2718
31afa0a4 2719bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
8f6df3fa
LP		 2720 Unit *u;
2721
2722 assert(m);
2723 assert(name);
2724
2725 /* Returns true if the unit is inactive or going down */
bd0af849
ZJS		 2726 u = manager_get_unit(m, name);
2727 if (!u)
8f6df3fa
LP		 2728 return true;
2729
31afa0a4 2730 return unit_inactive_or_pending(u);
8f6df3fa
LP		 2731}
2732
56dacdbc 2733static void manager_notify_finished(Manager *m) {
7ceba241 2734 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
915b3753 2735 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
b0c918b9 2736
56dacdbc 2737 if (m->test_run)
b0c918b9
LP		 2738 return;
2739
463d0d15 2740 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) {
e03ae661 2741
915b3753
LP		 2742 /* Note that m->kernel_usec.monotonic is always at 0,
2743 * and m->firmware_usec.monotonic and
2744 * m->loader_usec.monotonic should be considered
2745 * negative values. */
2746
7ceba241
LP		 2747 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2748 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
915b3753 2749 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
7ceba241 2750 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
18fa6b27 2751
e9ddabc2 2752 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
18fa6b27 2753
915b3753
LP		 2754 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2755 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
18fa6b27 2756
e12919e8 2757 log_struct(LOG_INFO,
e2cc6eca 2758 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8
LP		 2759 "KERNEL_USEC="USEC_FMT, kernel_usec,
2760 "INITRD_USEC="USEC_FMT, initrd_usec,
2761 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2762 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2763 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2764 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2765 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2766 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2767 NULL);
18fa6b27 2768 } else {
915b3753 2769 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
18fa6b27
LP		 2770 initrd_usec = 0;
2771
81270860 2772 log_struct(LOG_INFO,
e2cc6eca 2773 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2774 "KERNEL_USEC="USEC_FMT, kernel_usec,
ccd06097 2775 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2776 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2777 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2778 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2779 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
81270860 2780 NULL);
e12919e8
LP		 2781 }
2782 } else {
2783 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2784 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2785
2786 log_struct(LOG_INFO,
e2cc6eca 2787 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2788 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2789 LOG_MESSAGE("Startup finished in %s.",
2790 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2791 NULL);
18fa6b27 2792 }
b0c918b9 2793
718db961 2794 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
530345e7
LP		 2795
2796 sd_notifyf(false,
af4ec430
LP		 2797 "READY=1\n"
2798 "STATUS=Startup finished in %s.",
2fa4092c 2799 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
b0c918b9
LP		 2800}
2801
56dacdbc 2802void manager_check_finished(Manager *m) {
56dacdbc
ZJS		 2803 assert(m);
2804
2c289ea8 2805 if (MANAGER_IS_RELOADING(m))
aad1976f
LP		 2806 return;
2807
9771b62d
LP		 2808 /* Verify that we are actually running currently. Initially
2809 * the exit code is set to invalid, and during operation it is
2810 * then set to MANAGER_OK */
2811 if (m->exit_code != MANAGER_OK)
2812 return;
2813
56dacdbc 2814 if (hashmap_size(m->jobs) > 0) {
56dacdbc 2815 if (m->jobs_in_progress_event_source)
2ae56591 2816 /* Ignore any failure, this is only for feedback */
e7ab4d1a 2817 (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
56dacdbc
ZJS		 2818
2819 return;
2820 }
2821
2822 manager_flip_auto_status(m, false);
2823
2824 /* Notify Type=idle units that we are done now */
56dacdbc
ZJS		 2825 manager_close_idle_pipe(m);
2826
2827 /* Turn off confirm spawn now */
2828 m->confirm_spawn = false;
2829
2830 /* No need to update ask password status when we're going non-interactive */
2831 manager_close_ask_password(m);
2832
2833 /* This is no longer the first boot */
2834 manager_set_first_boot(m, false);
2835
2836 if (dual_timestamp_is_set(&m->finish_timestamp))
2837 return;
2838
2839 dual_timestamp_get(&m->finish_timestamp);
2840
2841 manager_notify_finished(m);
2842
e7ab4d1a 2843 manager_invalidate_startup_units(m);
56dacdbc
ZJS		 2844}
2845
e801700e 2846static int manager_run_generators(Manager *m) {
f42348ac 2847 _cleanup_strv_free_ char **paths = NULL;
07719a21 2848 const char *argv[5];
e801700e 2849 char **path;
07719a21 2850 int r;
5a1e9937
LP		 2851
2852 assert(m);
2853
0d8c31ff 2854 if (m->test_run)
e801700e 2855 return 0;
0d8c31ff 2856
9183df70 2857 paths = generator_binary_paths(m->unit_file_scope);
e801700e
ZJS		 2858 if (!paths)
2859 return log_oom();
5a1e9937 2860
49681057
ZJS		 2861 /* Optimize by skipping the whole process by not creating output directories
2862 * if no generators are found. */
e801700e 2863 STRV_FOREACH(path, paths) {
a3c4eb07 2864 if (access(*path, F_OK) >= 0)
e801700e 2865 goto found;
49681057 2866 if (errno != ENOENT)
e801700e 2867 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
5a1e9937 2868 }
a3c4eb07 2869
e801700e 2870 return 0;
5a1e9937 2871
e801700e 2872 found:
cd64fd56 2873 r = lookup_paths_mkdir_generator(&m->lookup_paths);
07719a21
LP		 2874 if (r < 0)
2875 goto finish;
5a1e9937 2876
83cc030f 2877 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
a3c4eb07
LP		 2878 argv[1] = m->lookup_paths.generator;
2879 argv[2] = m->lookup_paths.generator_early;
2880 argv[3] = m->lookup_paths.generator_late;
07719a21 2881 argv[4] = NULL;
5a1e9937 2882
718db961 2883 RUN_WITH_UMASK(0022)
e801700e 2884 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
5a1e9937 2885
718db961 2886finish:
cd64fd56 2887 lookup_paths_trim_generator(&m->lookup_paths);
e801700e 2888 return r;
5a1e9937
LP		 2889}
2890
718db961
LP		 2891int manager_environment_add(Manager *m, char **minus, char **plus) {
2892 char **a = NULL, **b = NULL, **l;
97d0e5f8 2893 assert(m);
bcd8e6d1 2894
718db961 2895 l = m->environment;
bcd8e6d1 2896
718db961
LP		 2897 if (!strv_isempty(minus)) {
2898 a = strv_env_delete(l, 1, minus);
2899 if (!a)
2900 return -ENOMEM;
2901
2902 l = a;
2903 }
2904
2905 if (!strv_isempty(plus)) {
2906 b = strv_env_merge(2, l, plus);
aa9f8a30
AH		 2907 if (!b) {
2908 strv_free(a);
718db961 2909 return -ENOMEM;
aa9f8a30 2910 }
bcd8e6d1 2911
718db961
LP		 2912 l = b;
2913 }
2914
2915 if (m->environment != l)
2916 strv_free(m->environment);
2917 if (a != l)
2918 strv_free(a);
2919 if (b != l)
2920 strv_free(b);
2921
f069efb4
LP		 2922 m->environment = l;
2923 manager_clean_environment(m);
2924 strv_sort(m->environment);
2925
97d0e5f8
UTL		 2926 return 0;
2927}
2928
c93ff2e9
FC		 2929int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2930 int i;
2931
2932 assert(m);
2933
517d56b1 2934 for (i = 0; i < _RLIMIT_MAX; i++) {
d9814c76
EV		 2935 m->rlimit[i] = mfree(m->rlimit[i]);
2936
07719a21
LP		 2937 if (!default_rlimit[i])
2938 continue;
c93ff2e9 2939
07719a21
LP		 2940 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2941 if (!m->rlimit[i])
2942 return -ENOMEM;
c93ff2e9
FC		 2943 }
2944
2945 return 0;
2946}
2947
4cfa2c99 2948void manager_recheck_journal(Manager *m) {
f1dd0c3f
LP		 2949 Unit *u;
2950
2951 assert(m);
2952
463d0d15 2953 if (!MANAGER_IS_SYSTEM(m))
f1dd0c3f
LP		 2954 return;
2955
731a676c
LP		 2956 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2957 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
4cfa2c99 2958 log_close_journal();
731a676c 2959 return;
f1dd0c3f
LP		 2960 }
2961
731a676c
LP		 2962 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2963 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
4cfa2c99 2964 log_close_journal();
731a676c
LP		 2965 return;
2966 }
f1dd0c3f 2967
731a676c
LP		 2968 /* Hmm, OK, so the socket is fully up and the service is up
2969 * too, then let's make use of the thing. */
f1dd0c3f
LP		 2970 log_open();
2971}
2972
d450b6f2 2973void manager_set_show_status(Manager *m, ShowStatus mode) {
27d340c7 2974 assert(m);
d450b6f2 2975 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
27d340c7 2976
463d0d15 2977 if (!MANAGER_IS_SYSTEM(m))
27d340c7
LP		 2978 return;
2979
76b6f3f6
ZJS		 2980 if (m->show_status != mode)
2981 log_debug("%s showing of status.",
2982 mode == SHOW_STATUS_NO ? "Disabling" : "Enabling");
d450b6f2 2983 m->show_status = mode;
27d340c7 2984
d450b6f2 2985 if (mode > 0)
ac5b0c13 2986 (void) touch("/run/systemd/show-status");
27d340c7 2987 else
ac5b0c13 2988 (void) unlink("/run/systemd/show-status");
27d340c7
LP		 2989}
2990
127d5fd1 2991static bool manager_get_show_status(Manager *m, StatusType type) {
27d340c7
LP		 2992 assert(m);
2993
463d0d15 2994 if (!MANAGER_IS_SYSTEM(m))
27d340c7
LP		 2995 return false;
2996
31a7eb86
ZJS		 2997 if (m->no_console_output)
2998 return false;
2999
d81afec1 3000 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
08510627
LP		 3001 return false;
3002
e46b13c8 3003 /* If we cannot find out the status properly, just proceed. */
ebc5788e 3004 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
e46b13c8
ZJS		 3005 return false;
3006
d450b6f2 3007 if (m->show_status > 0)
27d340c7
LP		 3008 return true;
3009
031886ed 3010 return false;
27d340c7 3011}
68b29a9f 3012
e2680723
LP		 3013void manager_set_first_boot(Manager *m, bool b) {
3014 assert(m);
3015
463d0d15 3016 if (!MANAGER_IS_SYSTEM(m))
e2680723
LP		 3017 return;
3018
ae2a2c53
LP		 3019 if (m->first_boot != (int) b) {
3020 if (b)
3021 (void) touch("/run/systemd/first-boot");
3022 else
3023 (void) unlink("/run/systemd/first-boot");
3024 }
e2680723 3025
ae2a2c53 3026 m->first_boot = b;
e2680723
LP		 3027}
3028
127d5fd1 3029void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
25cee550
MS		 3030 va_list ap;
3031
cb6531be
ZJS		 3032 /* If m is NULL, assume we're after shutdown and let the messages through. */
3033
3034 if (m && !manager_get_show_status(m, type))
25cee550
MS		 3035 return;
3036
03b717a3
MS		 3037 /* XXX We should totally drop the check for ephemeral here
3038 * and thus effectively make 'Type=idle' pointless. */
cb6531be 3039 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
03b717a3
MS		 3040 return;
3041
25cee550 3042 va_start(ap, format);
127d5fd1 3043 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
25cee550
MS		 3044 va_end(ap);
3045}
3046
a57f7e2c
LP		 3047Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3048 char p[strlen(path)+1];
3049
3050 assert(m);
3051 assert(path);
3052
3053 strcpy(p, path);
3054 path_kill_slashes(p);
3055
3056 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3057}
e66cf1a3
LP		 3058
3059const char *manager_get_runtime_prefix(Manager *m) {
f755e3b7 3060 assert(m);
e66cf1a3 3061
463d0d15 3062 return MANAGER_IS_SYSTEM(m) ?
e66cf1a3
LP		 3063 "/run" :
3064 getenv("XDG_RUNTIME_DIR");
3065}
f755e3b7 3066
5269eb6b 3067int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
03455c28 3068 unsigned size;
5269eb6b 3069 int r;
03455c28
LDM		 3070
3071 assert(m);
3072 assert(u->manager == m);
3073
3074 size = set_size(m->failed_units);
3075
9fff8981 3076 if (failed) {
5269eb6b
LP		 3077 r = set_ensure_allocated(&m->failed_units, NULL);
3078 if (r < 0)
3079 return log_oom();
3080
9fff8981 3081 if (set_put(m->failed_units, u) < 0)
5269eb6b 3082 return log_oom();
9fff8981 3083 } else
5269eb6b 3084 (void) set_remove(m->failed_units, u);
03455c28
LDM		 3085
3086 if (set_size(m->failed_units) != size)
3087 bus_manager_send_change_signal(m);
5269eb6b
LP		 3088
3089 return 0;
03455c28
LDM		 3090}
3091
f755e3b7
LP		 3092ManagerState manager_state(Manager *m) {
3093 Unit *u;
3094
3095 assert(m);
3096
3097 /* Did we ever finish booting? If not then we are still starting up */
d81afec1
LP		 3098 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3099
3100 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3101 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3102 return MANAGER_INITIALIZING;
3103
f755e3b7 3104 return MANAGER_STARTING;
d81afec1 3105 }
f755e3b7
LP		 3106
3107 /* Is the special shutdown target queued? If so, we are in shutdown state */
3108 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
f0469b8c 3109 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))
f755e3b7
LP		 3110 return MANAGER_STOPPING;
3111
3112 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3113 u = manager_get_unit(m, SPECIAL_RESCUE_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 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3119 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
f0469b8c 3120 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
f755e3b7
LP		 3121 return MANAGER_MAINTENANCE;
3122
3123 /* Are there any failed units? If so, we are in degraded mode */
3124 if (set_size(m->failed_units) > 0)
3125 return MANAGER_DEGRADED;
3126
3127 return MANAGER_RUNNING;
3128}
3129
3130static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
d81afec1 3131 [MANAGER_INITIALIZING] = "initializing",
f755e3b7
LP		 3132 [MANAGER_STARTING] = "starting",
3133 [MANAGER_RUNNING] = "running",
3134 [MANAGER_DEGRADED] = "degraded",
3135 [MANAGER_MAINTENANCE] = "maintenance",
3136 [MANAGER_STOPPING] = "stopping",
3137};
3138
3139DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
Unnamed repository; edit this file 'description' to name the repository.