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systemctl: port systemctl over to the new LookupPaths configuration directory fields
[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"
52#include "env-util.h"
4f5dd394 53#include "escape.h"
400f1a33 54#include "exit-status.h"
3ffd4af2 55#include "fd-util.h"
0d39fa9c 56#include "fileio.h"
f4f15635 57#include "fs-util.h"
60918275 58#include "hashmap.h"
c004493c 59#include "io-util.h"
400f1a33 60#include "locale-setup.h"
16354eff 61#include "log.h"
400f1a33 62#include "macro.h"
3ffd4af2 63#include "manager.h"
400f1a33 64#include "missing.h"
49e942b2 65#include "mkdir.h"
6bedfcbb 66#include "parse-util.h"
400f1a33
LP		 67#include "path-lookup.h"
68#include "path-util.h"
69#include "process-util.h"
ea430986 70#include "ratelimit.h"
c6878637 71#include "rm-rf.h"
400f1a33 72#include "signal-util.h"
514f4ef5 73#include "special.h"
8fcde012 74#include "stat-util.h"
8b43440b 75#include "string-table.h"
07630cea 76#include "string-util.h"
400f1a33
LP		 77#include "strv.h"
78#include "terminal-util.h"
79#include "time-util.h"
80#include "transaction.h"
affb60b1 81#include "umask-util.h"
400f1a33
LP		 82#include "unit-name.h"
83#include "util.h"
5dc4c17f 84#include "virt.h"
e96d6be7 85#include "watchdog.h"
60918275 86
a47806fa
LP		 87#define NOTIFY_RCVBUF_SIZE (8*1024*1024)
88
03b717a3 89/* Initial delay and the interval for printing status messages about running jobs */
fd08a840
ZJS		 90#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
91#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
03b717a3
MS		 92#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
93
718db961
LP		 94static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
95static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
96static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
97static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
98static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
752b5905 99static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
e801700e
ZJS		 100static int manager_run_generators(Manager *m);
101static void manager_undo_generators(Manager *m);
718db961 102
2ae56591 103static void manager_watch_jobs_in_progress(Manager *m) {
e5723c89 104 usec_t next;
cfa9677b 105 int r;
e5723c89 106
718db961 107 assert(m);
03b717a3 108
718db961 109 if (m->jobs_in_progress_event_source)
2ae56591 110 return;
03b717a3 111
e5723c89 112 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
cfa9677b 113 r = sd_event_add_time(
6a0f1f6d
LP		 114 m->event,
115 &m->jobs_in_progress_event_source,
116 CLOCK_MONOTONIC,
117 next, 0,
118 manager_dispatch_jobs_in_progress, m);
cfa9677b
MM		 119 if (r < 0)
120 return;
7dfbe2e3
TG		 121
122 (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress");
03b717a3
MS		 123}
124
1fc464f6 125#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
03b717a3 126
03b717a3
MS		 127static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
128 char *p = buffer;
129
130 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
131 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
132
133 if (pos > 1) {
6282c859
MS		 134 if (pos > 2)
135 p = mempset(p, ' ', pos-2);
1fc464f6 136 p = stpcpy(p, ANSI_RED);
03b717a3
MS		 137 *p++ = '*';
138 }
139
140 if (pos > 0 && pos <= width) {
1fc464f6 141 p = stpcpy(p, ANSI_HIGHLIGHT_RED);
03b717a3
MS		 142 *p++ = '*';
143 }
144
1fc464f6 145 p = stpcpy(p, ANSI_NORMAL);
03b717a3
MS		 146
147 if (pos < width) {
1fc464f6 148 p = stpcpy(p, ANSI_RED);
03b717a3 149 *p++ = '*';
6282c859
MS		 150 if (pos < width-1)
151 p = mempset(p, ' ', width-1-pos);
1fc464f6 152 strcpy(p, ANSI_NORMAL);
03b717a3 153 }
03b717a3
MS		 154}
155
cb8ccb22 156void manager_flip_auto_status(Manager *m, bool enable) {
f755e3b7
LP		 157 assert(m);
158
cb8ccb22
ZJS		 159 if (enable) {
160 if (m->show_status == SHOW_STATUS_AUTO)
161 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
162 } else {
163 if (m->show_status == SHOW_STATUS_TEMPORARY)
164 manager_set_show_status(m, SHOW_STATUS_AUTO);
165 }
166}
167
03b717a3 168static void manager_print_jobs_in_progress(Manager *m) {
718db961 169 _cleanup_free_ char *job_of_n = NULL;
03b717a3
MS		 170 Iterator i;
171 Job *j;
03b717a3
MS		 172 unsigned counter = 0, print_nr;
173 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
174 unsigned cylon_pos;
8bb310c3
ZJS		 175 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
176 uint64_t x;
03b717a3 177
718db961 178 assert(m);
9c3349e2 179 assert(m->n_running_jobs > 0);
718db961 180
cb8ccb22 181 manager_flip_auto_status(m, true);
d450b6f2 182
03b717a3
MS		 183 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
184
185 HASHMAP_FOREACH(j, m->jobs, i)
186 if (j->state == JOB_RUNNING && counter++ == print_nr)
187 break;
188
e970a72e
MS		 189 /* m->n_running_jobs must be consistent with the contents of m->jobs,
190 * so the above loop must have succeeded in finding j. */
191 assert(counter == print_nr + 1);
51d122af 192 assert(j);
5a82a91a 193
03b717a3
MS		 194 cylon_pos = m->jobs_in_progress_iteration % 14;
195 if (cylon_pos >= 8)
196 cylon_pos = 14 - cylon_pos;
197 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
198
8bb310c3
ZJS		 199 m->jobs_in_progress_iteration++;
200
d6483ba7
ZJS		 201 if (m->n_running_jobs > 1) {
202 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
203 job_of_n = NULL;
204 }
03b717a3 205
8bb310c3
ZJS		 206 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
207 if (job_get_timeout(j, &x) > 0)
208 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
209
127d5fd1 210 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
8bb310c3
ZJS		 211 "%sA %s job is running for %s (%s / %s)",
212 strempty(job_of_n),
213 job_type_to_string(j->type),
214 unit_description(j->unit),
215 time, limit);
03b717a3
MS		 216}
217
e46b13c8
ZJS		 218static int have_ask_password(void) {
219 _cleanup_closedir_ DIR *dir;
220
221 dir = opendir("/run/systemd/ask-password");
222 if (!dir) {
223 if (errno == ENOENT)
224 return false;
225 else
226 return -errno;
227 }
228
229 for (;;) {
230 struct dirent *de;
231
232 errno = 0;
233 de = readdir(dir);
b3267152 234 if (!de && errno > 0)
e46b13c8
ZJS		 235 return -errno;
236 if (!de)
237 return false;
238
239 if (startswith(de->d_name, "ask."))
240 return true;
241 }
242}
243
244static int manager_dispatch_ask_password_fd(sd_event_source *source,
245 int fd, uint32_t revents, void *userdata) {
246 Manager *m = userdata;
247
248 assert(m);
249
250 flush_fd(fd);
251
252 m->have_ask_password = have_ask_password();
253 if (m->have_ask_password < 0)
254 /* Log error but continue. Negative have_ask_password
255 * is treated as unknown status. */
c33b3297 256 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
e46b13c8
ZJS		 257
258 return 0;
259}
260
261static void manager_close_ask_password(Manager *m) {
262 assert(m);
263
e46b13c8 264 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
90990e28 265 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
e46b13c8
ZJS		 266 m->have_ask_password = -EINVAL;
267}
268
269static int manager_check_ask_password(Manager *m) {
270 int r;
271
272 assert(m);
273
274 if (!m->ask_password_event_source) {
275 assert(m->ask_password_inotify_fd < 0);
276
277 mkdir_p_label("/run/systemd/ask-password", 0755);
278
279 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 280 if (m->ask_password_inotify_fd < 0)
281 return log_error_errno(errno, "inotify_init1() failed: %m");
e46b13c8
ZJS		 282
283 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
56f64d95 284 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
e46b13c8
ZJS		 285 manager_close_ask_password(m);
286 return -errno;
287 }
288
289 r = sd_event_add_io(m->event, &m->ask_password_event_source,
290 m->ask_password_inotify_fd, EPOLLIN,
291 manager_dispatch_ask_password_fd, m);
292 if (r < 0) {
56f64d95 293 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
e46b13c8
ZJS		 294 manager_close_ask_password(m);
295 return -errno;
296 }
297
7dfbe2e3
TG		 298 (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
299
e46b13c8
ZJS		 300 /* Queries might have been added meanwhile... */
301 manager_dispatch_ask_password_fd(m->ask_password_event_source,
302 m->ask_password_inotify_fd, EPOLLIN, m);
303 }
304
305 return m->have_ask_password;
306}
307
31a7eb86 308static int manager_watch_idle_pipe(Manager *m) {
31a7eb86
ZJS		 309 int r;
310
718db961
LP		 311 assert(m);
312
313 if (m->idle_pipe_event_source)
31a7eb86
ZJS		 314 return 0;
315
316 if (m->idle_pipe[2] < 0)
317 return 0;
318
151b9b96 319 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		 320 if (r < 0)
321 return log_error_errno(r, "Failed to watch idle pipe: %m");
31a7eb86 322
7dfbe2e3
TG		 323 (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
324
31a7eb86 325 return 0;
31a7eb86
ZJS		 326}
327
718db961
LP		 328static void manager_close_idle_pipe(Manager *m) {
329 assert(m);
31a7eb86 330
cd72bd8a
LP		 331 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
332
3d94f76c
LP		 333 safe_close_pair(m->idle_pipe);
334 safe_close_pair(m->idle_pipe + 2);
31a7eb86
ZJS		 335}
336
8742514c 337static int manager_setup_time_change(Manager *m) {
718db961 338 int r;
b92bea5d
ZJS		 339
340 /* We only care for the cancellation event, hence we set the
341 * timeout to the latest possible value. */
342 struct itimerspec its = {
343 .it_value.tv_sec = TIME_T_MAX,
344 };
8742514c 345
718db961
LP		 346 assert(m);
347 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
8742514c 348
0d8c31ff
ZJS		 349 if (m->test_run)
350 return 0;
351
8742514c
LP		 352 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
353 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
354
718db961 355 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
4a62c710
MS		 356 if (m->time_change_fd < 0)
357 return log_error_errno(errno, "Failed to create timerfd: %m");
8742514c 358
718db961 359 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
56f64d95 360 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
03e334a1 361 m->time_change_fd = safe_close(m->time_change_fd);
8742514c
LP		 362 return 0;
363 }
364
151b9b96 365 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		 366 if (r < 0)
367 return log_error_errno(r, "Failed to create time change event source: %m");
8742514c 368
7dfbe2e3
TG		 369 (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
370
8742514c
LP		 371 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
372
373 return 0;
374}
375
80876c20 376static int enable_special_signals(Manager *m) {
718db961 377 _cleanup_close_ int fd = -1;
80876c20
LP		 378
379 assert(m);
380
37453b3a
EV		 381 if (m->test_run)
382 return 0;
383
a41b539e 384 /* Enable that we get SIGINT on control-alt-del. In containers
c9999773
LP		 385 * this will fail with EPERM (older) or EINVAL (newer), so
386 * ignore that. */
387 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
56f64d95 388 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
80876c20 389
a41b539e
LP		 390 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
391 if (fd < 0) {
392 /* Support systems without virtual console */
393 if (fd != -ENOENT)
56f64d95 394 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
a41b539e 395 } else {
80876c20
LP		 396 /* Enable that we get SIGWINCH on kbrequest */
397 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
56f64d95 398 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
80876c20
LP		 399 }
400
401 return 0;
402}
403
ce578209 404static int manager_setup_signals(Manager *m) {
b92bea5d
ZJS		 405 struct sigaction sa = {
406 .sa_handler = SIG_DFL,
407 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
408 };
718db961
LP		 409 sigset_t mask;
410 int r;
60918275 411
ce578209
LP		 412 assert(m);
413
57c0c30e
LP		 414 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
415
4dffec14
LP		 416 /* We make liberal use of realtime signals here. On
417 * Linux/glibc we have 30 of them (with the exception of Linux
418 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
419 * (aka SIGRTMAX). */
7d793605 420
4dffec14 421 assert_se(sigemptyset(&mask) == 0);
7d793605
LP		 422 sigset_add_many(&mask,
423 SIGCHLD, /* Child died */
424 SIGTERM, /* Reexecute daemon */
425 SIGHUP, /* Reload configuration */
426 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
427 SIGUSR2, /* systemd: dump status */
428 SIGINT, /* Kernel sends us this on control-alt-del */
429 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
430 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
4dffec14 431
7d793605 432 SIGRTMIN+0, /* systemd: start default.target */
0003d1ab 433 SIGRTMIN+1, /* systemd: isolate rescue.target */
7d793605
LP		 434 SIGRTMIN+2, /* systemd: isolate emergency.target */
435 SIGRTMIN+3, /* systemd: start halt.target */
436 SIGRTMIN+4, /* systemd: start poweroff.target */
437 SIGRTMIN+5, /* systemd: start reboot.target */
0003d1ab 438 SIGRTMIN+6, /* systemd: start kexec.target */
4dffec14
LP		 439
440 /* ... space for more special targets ... */
441
0003d1ab
LP		 442 SIGRTMIN+13, /* systemd: Immediate halt */
443 SIGRTMIN+14, /* systemd: Immediate poweroff */
444 SIGRTMIN+15, /* systemd: Immediate reboot */
445 SIGRTMIN+16, /* systemd: Immediate kexec */
4dffec14
LP		 446
447 /* ... space for more immediate system state changes ... */
448
0658666b
LP		 449 SIGRTMIN+20, /* systemd: enable status messages */
450 SIGRTMIN+21, /* systemd: disable status messages */
253ee27a
LP		 451 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
452 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
600b704e 453 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
4dffec14
LP		 454
455 /* .. one free signal here ... */
456
457#if !defined(__hppa64__) && !defined(__hppa__)
458 /* Apparently Linux on hppa has fewer RT
459 * signals (SIGRTMAX is SIGRTMIN+25 there),
460 * hence let's not try to make use of them
461 * here. Since these commands are accessible
462 * by different means and only really a safety
463 * net, the missing functionality on hppa
464 * shouldn't matter. */
465
4cfa2c99 466 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
253ee27a
LP		 467 SIGRTMIN+27, /* systemd: set log target to console */
468 SIGRTMIN+28, /* systemd: set log target to kmsg */
ee33e53a 469 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
4dffec14
LP		 470
471 /* ... one free signal here SIGRTMIN+30 ... */
472#endif
7d793605 473 -1);
ce578209
LP		 474 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
475
718db961
LP		 476 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
477 if (m->signal_fd < 0)
ce578209
LP		 478 return -errno;
479
151b9b96 480 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
718db961
LP		 481 if (r < 0)
482 return r;
ce578209 483
7dfbe2e3
TG		 484 (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
485
fa28bc2d 486 /* Process signals a bit earlier than the rest of things, but
46849c3f 487 * later than notify_fd processing, so that the notify
fa28bc2d
LP		 488 * processing can still figure out to which process/service a
489 * message belongs, before we reap the process. */
df006034 490 r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-5);
29083707
LP		 491 if (r < 0)
492 return r;
493
b2c23da8 494 if (m->running_as == MANAGER_SYSTEM)
80876c20 495 return enable_special_signals(m);
e1414003 496
ce578209
LP		 497 return 0;
498}
499
f069efb4
LP		 500static void manager_clean_environment(Manager *m) {
501 assert(m);
502
503 /* Let's remove some environment variables that we
504 * need ourselves to communicate with our clients */
505 strv_env_unset_many(
506 m->environment,
507 "NOTIFY_SOCKET",
508 "MAINPID",
509 "MANAGERPID",
510 "LISTEN_PID",
511 "LISTEN_FDS",
8dd4c05b 512 "LISTEN_FDNAMES",
f069efb4
LP		 513 "WATCHDOG_PID",
514 "WATCHDOG_USEC",
515 NULL);
516}
517
e21fea24 518static int manager_default_environment(Manager *m) {
71ecc858
LP		 519 assert(m);
520
b2c23da8 521 if (m->running_as == MANAGER_SYSTEM) {
e21fea24
KS		 522 /* The system manager always starts with a clean
523 * environment for its children. It does not import
524 * the kernel or the parents exported variables.
525 *
526 * The initial passed environ is untouched to keep
527 * /proc/self/environ valid; it is used for tagging
528 * the init process inside containers. */
43638332
ZJS		 529 m->environment = strv_new("PATH=" DEFAULT_PATH,
530 NULL);
e21fea24
KS		 531
532 /* Import locale variables LC_*= from configuration */
533 locale_setup(&m->environment);
43d03a83 534 } else {
e21fea24
KS		 535 /* The user manager passes its own environment
536 * along to its children. */
537 m->environment = strv_copy(environ);
43d03a83
LP		 538 }
539
e21fea24
KS		 540 if (!m->environment)
541 return -ENOMEM;
8b55b8c4 542
f069efb4 543 manager_clean_environment(m);
9d5a3757
LP		 544 strv_sort(m->environment);
545
e21fea24 546 return 0;
71ecc858
LP		 547}
548
f2341e0a 549
b2c23da8 550int manager_new(ManagerRunningAs running_as, bool test_run, Manager **_m) {
f2341e0a 551
b2c23da8
LP		 552 static const char * const unit_log_fields[_MANAGER_RUNNING_AS_MAX] = {
553 [MANAGER_SYSTEM] = "UNIT=",
554 [MANAGER_USER] = "USER_UNIT=",
f2341e0a
LP		 555 };
556
b2c23da8
LP		 557 static const char * const unit_log_format_strings[_MANAGER_RUNNING_AS_MAX] = {
558 [MANAGER_SYSTEM] = "UNIT=%s",
559 [MANAGER_USER] = "USER_UNIT=%s",
f2341e0a
LP		 560 };
561
ce578209 562 Manager *m;
e3dd987c 563 int r;
8e274523
LP		 564
565 assert(_m);
a5dab5ce 566 assert(running_as >= 0);
b2c23da8 567 assert(running_as < _MANAGER_RUNNING_AS_MAX);
ce578209 568
915b3753
LP		 569 m = new0(Manager, 1);
570 if (!m)
8e274523 571 return -ENOMEM;
60918275 572
4f8d551f 573#ifdef ENABLE_EFI
75f86906 574 if (running_as == MANAGER_SYSTEM && detect_container() <= 0)
c51d84dc 575 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
4f8d551f
ZC		 576#endif
577
a5dab5ce 578 m->running_as = running_as;
a16e1123 579 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
bd8f585b 580 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
9ded9cd1
LP		 581 m->default_tasks_accounting = true;
582 m->default_tasks_max = UINT64_C(512);
80876c20 583
f2341e0a
LP		 584 /* Prepare log fields we can use for structured logging */
585 m->unit_log_field = unit_log_fields[running_as];
586 m->unit_log_format_string = unit_log_format_strings[running_as];
587
718db961 588 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
8742514c 589
efdb0237 590 m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd =
d379d442
KZ		 591 m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd = -1;
592
ea430986 593 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
9152c765 594
e46b13c8
ZJS		 595 m->ask_password_inotify_fd = -1;
596 m->have_ask_password = -EINVAL; /* we don't know */
ae2a2c53 597 m->first_boot = -1;
e46b13c8 598
0d8c31ff
ZJS		 599 m->test_run = test_run;
600
2e5c94b9
LP		 601 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
602 RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
603
e21fea24
KS		 604 r = manager_default_environment(m);
605 if (r < 0)
1137a57c
LP		 606 goto fail;
607
d5099efc 608 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
718db961 609 if (r < 0)
60918275
LP		 610 goto fail;
611
d5099efc 612 r = hashmap_ensure_allocated(&m->jobs, NULL);
718db961 613 if (r < 0)
60918275
LP		 614 goto fail;
615
d5099efc 616 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
718db961 617 if (r < 0)
9152c765
LP		 618 goto fail;
619
d5099efc 620 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
718db961 621 if (r < 0)
05e343b7
LP		 622 goto fail;
623
718db961
LP		 624 r = sd_event_default(&m->event);
625 if (r < 0)
8742514c
LP		 626 goto fail;
627
151b9b96 628 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
752b5905
LP		 629 if (r < 0)
630 goto fail;
631
632 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
633 if (r < 0)
634 goto fail;
635
636 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
637 if (r < 0)
638 goto fail;
639
7dfbe2e3
TG		 640 (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
641
8742514c
LP		 642 r = manager_setup_signals(m);
643 if (r < 0)
9152c765
LP		 644 goto fail;
645
8742514c
LP		 646 r = manager_setup_cgroup(m);
647 if (r < 0)
8e274523
LP		 648 goto fail;
649
8742514c
LP		 650 r = manager_setup_time_change(m);
651 if (r < 0)
8c47c732
LP		 652 goto fail;
653
9670d583
LP		 654 m->udev = udev_new();
655 if (!m->udev) {
656 r = -ENOMEM;
657 goto fail;
658 }
659
d86f9d52
LP		 660 /* Note that we set up neither kdbus, nor the notify fd
661 * here. We do that after deserialization, since they might
662 * have gotten serialized across the reexec. */
663
72bc8d00
LP		 664 m->taint_usr = dir_is_empty("/usr") > 0;
665
8e274523
LP		 666 *_m = m;
667 return 0;
60918275
LP		 668
669fail:
670 manager_free(m);
8e274523 671 return r;
60918275
LP		 672}
673
d86f9d52 674static int manager_setup_notify(Manager *m) {
7181dbdb 675 int r;
d86f9d52 676
0d8c31ff
ZJS		 677 if (m->test_run)
678 return 0;
679
d86f9d52
LP		 680 if (m->notify_fd < 0) {
681 _cleanup_close_ int fd = -1;
920b52e4 682 union sockaddr_union sa = {
7181dbdb
LP		 683 .sa.sa_family = AF_UNIX,
684 };
55836941 685 static const int one = 1;
d86f9d52
LP		 686
687 /* First free all secondary fields */
a1e58e8e 688 m->notify_socket = mfree(m->notify_socket);
d86f9d52
LP		 689 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
690
691 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
4a62c710
MS		 692 if (fd < 0)
693 return log_error_errno(errno, "Failed to allocate notification socket: %m");
d86f9d52 694
a47806fa
LP		 695 fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE);
696
b2c23da8 697 if (m->running_as == MANAGER_SYSTEM)
7181dbdb 698 m->notify_socket = strdup("/run/systemd/notify");
498e87d6 699 else {
7181dbdb 700 const char *e;
d86f9d52 701
7181dbdb
LP		 702 e = getenv("XDG_RUNTIME_DIR");
703 if (!e) {
56f64d95 704 log_error_errno(errno, "XDG_RUNTIME_DIR is not set: %m");
7181dbdb
LP		 705 return -EINVAL;
706 }
707
708 m->notify_socket = strappend(e, "/systemd/notify");
709 }
498e87d6
LP		 710 if (!m->notify_socket)
711 return log_oom();
712
713 (void) mkdir_parents_label(m->notify_socket, 0755);
f0e62e89 714 (void) unlink(m->notify_socket);
7181dbdb
LP		 715
716 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
717 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
4a62c710
MS		 718 if (r < 0)
719 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
d86f9d52
LP		 720
721 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
4a62c710
MS		 722 if (r < 0)
723 return log_error_errno(errno, "SO_PASSCRED failed: %m");
d86f9d52 724
d86f9d52
LP		 725 m->notify_fd = fd;
726 fd = -1;
727
728 log_debug("Using notification socket %s", m->notify_socket);
729 }
730
731 if (!m->notify_event_source) {
151b9b96 732 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
895b3a7b
MS		 733 if (r < 0)
734 return log_error_errno(r, "Failed to allocate notify event source: %m");
d86f9d52
LP		 735
736 /* Process signals a bit earlier than SIGCHLD, so that we can
737 * still identify to which service an exit message belongs */
df006034 738 r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7);
23bbb0de
MS		 739 if (r < 0)
740 return log_error_errno(r, "Failed to set priority of notify event source: %m");
7dfbe2e3
TG		 741
742 (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
d86f9d52
LP		 743 }
744
745 return 0;
746}
747
748static int manager_setup_kdbus(Manager *m) {
749 _cleanup_free_ char *p = NULL;
750
751 assert(m);
752
0d8c31ff 753 if (m->test_run || m->kdbus_fd >= 0)
d86f9d52 754 return 0;
d79acc30
DH		 755 if (!is_kdbus_available())
756 return -ESOCKTNOSUPPORT;
d86f9d52 757
1a299299 758 m->kdbus_fd = bus_kernel_create_bus(
b2c23da8
LP		 759 m->running_as == MANAGER_SYSTEM ? "system" : "user",
760 m->running_as == MANAGER_SYSTEM, &p);
1a299299 761
eb56eb9b
MS		 762 if (m->kdbus_fd < 0)
763 return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m");
d86f9d52
LP		 764
765 log_debug("Successfully set up kdbus on %s", p);
d86f9d52
LP		 766
767 return 0;
768}
769
770static int manager_connect_bus(Manager *m, bool reexecuting) {
771 bool try_bus_connect;
772
773 assert(m);
774
0d8c31ff
ZJS		 775 if (m->test_run)
776 return 0;
777
d86f9d52
LP		 778 try_bus_connect =
779 m->kdbus_fd >= 0 ||
780 reexecuting ||
b2c23da8 781 (m->running_as == MANAGER_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
d86f9d52 782
ff9b60f3 783 /* Try to connect to the buses, if possible. */
d86f9d52
LP		 784 return bus_init(m, try_bus_connect);
785}
786
23a177ef 787static unsigned manager_dispatch_cleanup_queue(Manager *m) {
595ed347 788 Unit *u;
23a177ef
LP		 789 unsigned n = 0;
790
791 assert(m);
792
595ed347
MS		 793 while ((u = m->cleanup_queue)) {
794 assert(u->in_cleanup_queue);
23a177ef 795
595ed347 796 unit_free(u);
23a177ef
LP		 797 n++;
798 }
799
800 return n;
801}
802
eced69b3 803enum {
35b8ca3a 804 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
eced69b3
LP		 805 GC_OFFSET_UNSURE, /* No clue */
806 GC_OFFSET_GOOD, /* We still need this unit */
807 GC_OFFSET_BAD, /* We don't need this unit anymore */
808 _GC_OFFSET_MAX
809};
810
811static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
701cc384
LP		 812 Iterator i;
813 Unit *other;
eced69b3 814 bool is_bad;
701cc384
LP		 815
816 assert(u);
817
ac155bb8
MS		 818 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
819 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
820 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
701cc384
LP		 821 return;
822
ac155bb8 823 if (u->in_cleanup_queue)
701cc384
LP		 824 goto bad;
825
826 if (unit_check_gc(u))
827 goto good;
828
ac155bb8 829 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
eced69b3
LP		 830
831 is_bad = true;
832
ac155bb8 833 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
701cc384
LP		 834 unit_gc_sweep(other, gc_marker);
835
ac155bb8 836 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
701cc384 837 goto good;
eced69b3 838
ac155bb8 839 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
eced69b3 840 is_bad = false;
701cc384
LP		 841 }
842
eced69b3
LP		 843 if (is_bad)
844 goto bad;
845
846 /* We were unable to find anything out about this entry, so
847 * let's investigate it later */
ac155bb8 848 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
eced69b3
LP		 849 unit_add_to_gc_queue(u);
850 return;
851
701cc384 852bad:
eced69b3
LP		 853 /* We definitely know that this one is not useful anymore, so
854 * let's mark it for deletion */
ac155bb8 855 u->gc_marker = gc_marker + GC_OFFSET_BAD;
eced69b3 856 unit_add_to_cleanup_queue(u);
701cc384
LP		 857 return;
858
859good:
ac155bb8 860 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
701cc384
LP		 861}
862
863static unsigned manager_dispatch_gc_queue(Manager *m) {
595ed347 864 Unit *u;
701cc384 865 unsigned n = 0;
eced69b3 866 unsigned gc_marker;
701cc384
LP		 867
868 assert(m);
869
cf1265e1 870 /* log_debug("Running GC..."); */
701cc384 871
eced69b3
LP		 872 m->gc_marker += _GC_OFFSET_MAX;
873 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
c9c0cadb 874 m->gc_marker = 1;
701cc384 875
eced69b3
LP		 876 gc_marker = m->gc_marker;
877
595ed347
MS		 878 while ((u = m->gc_queue)) {
879 assert(u->in_gc_queue);
701cc384 880
595ed347 881 unit_gc_sweep(u, gc_marker);
eced69b3 882
71fda00f 883 LIST_REMOVE(gc_queue, m->gc_queue, u);
595ed347 884 u->in_gc_queue = false;
701cc384
LP		 885
886 n++;
887
595ed347
MS		 888 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
889 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
cc3bc3e6 890 if (u->id)
f2341e0a 891 log_unit_debug(u, "Collecting.");
595ed347
MS		 892 u->gc_marker = gc_marker + GC_OFFSET_BAD;
893 unit_add_to_cleanup_queue(u);
701cc384
LP		 894 }
895 }
896
897 m->n_in_gc_queue = 0;
701cc384
LP		 898
899 return n;
900}
901
a16e1123 902static void manager_clear_jobs_and_units(Manager *m) {
a16e1123 903 Unit *u;
60918275
LP		 904
905 assert(m);
906
87f0e418
LP		 907 while ((u = hashmap_first(m->units)))
908 unit_free(u);
964e0949
LP		 909
910 manager_dispatch_cleanup_queue(m);
911
912 assert(!m->load_queue);
913 assert(!m->run_queue);
914 assert(!m->dbus_unit_queue);
915 assert(!m->dbus_job_queue);
916 assert(!m->cleanup_queue);
917 assert(!m->gc_queue);
918
964e0949
LP		 919 assert(hashmap_isempty(m->jobs));
920 assert(hashmap_isempty(m->units));
9e9e2b72
MS		 921
922 m->n_on_console = 0;
923 m->n_running_jobs = 0;
a16e1123
LP		 924}
925
06d8d842 926Manager* manager_free(Manager *m) {
a16e1123 927 UnitType c;
c93ff2e9 928 int i;
87f0e418 929
06d8d842
ZJS		 930 if (!m)
931 return NULL;
a16e1123
LP		 932
933 manager_clear_jobs_and_units(m);
23a177ef 934
7824bbeb
LP		 935 for (c = 0; c < _UNIT_TYPE_MAX; c++)
936 if (unit_vtable[c]->shutdown)
937 unit_vtable[c]->shutdown(m);
938
a16e1123
LP		 939 /* If we reexecute ourselves, we keep the root cgroup
940 * around */
c6c18be3 941 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
8e274523 942
5a1e9937
LP		 943 manager_undo_generators(m);
944
5e8d1c9a 945 bus_done(m);
ea430986 946
87f0e418 947 hashmap_free(m->units);
60918275 948 hashmap_free(m->jobs);
5ba6985b
LP		 949 hashmap_free(m->watch_pids1);
950 hashmap_free(m->watch_pids2);
05e343b7 951 hashmap_free(m->watch_bus);
9152c765 952
95ae05c0 953 set_free(m->startup_units);
f755e3b7
LP		 954 set_free(m->failed_units);
955
718db961
LP		 956 sd_event_source_unref(m->signal_event_source);
957 sd_event_source_unref(m->notify_event_source);
958 sd_event_source_unref(m->time_change_event_source);
959 sd_event_source_unref(m->jobs_in_progress_event_source);
752b5905 960 sd_event_source_unref(m->run_queue_event_source);
718db961 961
03e334a1
LP		 962 safe_close(m->signal_fd);
963 safe_close(m->notify_fd);
964 safe_close(m->time_change_fd);
965 safe_close(m->kdbus_fd);
718db961 966
e46b13c8
ZJS		 967 manager_close_ask_password(m);
968
718db961
LP		 969 manager_close_idle_pipe(m);
970
9670d583 971 udev_unref(m->udev);
718db961 972 sd_event_unref(m->event);
60918275 973
c952c6ec
LP		 974 free(m->notify_socket);
975
84e3543e 976 lookup_paths_free(&m->lookup_paths);
1137a57c 977 strv_free(m->environment);
036643a2 978
4ad49000 979 hashmap_free(m->cgroup_unit);
c6c18be3 980 set_free_free(m->unit_path_cache);
33be102a 981
664f88a7
LP		 982 free(m->switch_root);
983 free(m->switch_root_init);
984
517d56b1 985 for (i = 0; i < _RLIMIT_MAX; i++)
d9814c76 986 m->rlimit[i] = mfree(m->rlimit[i]);
c93ff2e9 987
a57f7e2c
LP		 988 assert(hashmap_isempty(m->units_requiring_mounts_for));
989 hashmap_free(m->units_requiring_mounts_for);
990
60918275 991 free(m);
06d8d842 992 return NULL;
60918275
LP		 993}
994
ba64af90 995void manager_enumerate(Manager *m) {
f50e0a01 996 UnitType c;
f50e0a01
LP		 997
998 assert(m);
999
a16e1123
LP		 1000 /* Let's ask every type to load all units from disk/kernel
1001 * that it might know */
0faacd47 1002 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
1c2e9646 1003 if (!unit_type_supported(c)) {
03afec3c 1004 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
0faacd47 1005 continue;
a57f7e2c 1006 }
f50e0a01 1007
0faacd47
LP		 1008 if (!unit_vtable[c]->enumerate)
1009 continue;
1010
ba64af90 1011 unit_vtable[c]->enumerate(m);
0faacd47
LP		 1012 }
1013
f50e0a01 1014 manager_dispatch_load_queue(m);
a16e1123
LP		 1015}
1016
007c6337 1017static void manager_coldplug(Manager *m) {
a16e1123
LP		 1018 Iterator i;
1019 Unit *u;
1020 char *k;
007c6337 1021 int r;
a16e1123
LP		 1022
1023 assert(m);
f50e0a01
LP		 1024
1025 /* Then, let's set up their initial state. */
1026 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1027
1028 /* ignore aliases */
ac155bb8 1029 if (u->id != k)
f50e0a01
LP		 1030 continue;
1031
007c6337
LP		 1032 r = unit_coldplug(u);
1033 if (r < 0)
1034 log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
f50e0a01 1035 }
a16e1123
LP		 1036}
1037
fe51822e
LP		 1038static void manager_build_unit_path_cache(Manager *m) {
1039 char **i;
807d0cca 1040 _cleanup_closedir_ DIR *d = NULL;
fe51822e
LP		 1041 int r;
1042
1043 assert(m);
1044
1045 set_free_free(m->unit_path_cache);
1046
d5099efc 1047 m->unit_path_cache = set_new(&string_hash_ops);
874310b7 1048 if (!m->unit_path_cache) {
fe51822e
LP		 1049 log_error("Failed to allocate unit path cache.");
1050 return;
1051 }
1052
1053 /* This simply builds a list of files we know exist, so that
1054 * we don't always have to go to disk */
1055
a3c4eb07 1056 STRV_FOREACH(i, m->lookup_paths.search_path) {
fe51822e
LP		 1057 struct dirent *de;
1058
bd0af849
ZJS		 1059 d = opendir(*i);
1060 if (!d) {
874310b7 1061 if (errno != ENOENT)
56f64d95 1062 log_error_errno(errno, "Failed to open directory %s: %m", *i);
fe51822e
LP		 1063 continue;
1064 }
1065
1066 while ((de = readdir(d))) {
1067 char *p;
1068
a34bf9db 1069 if (hidden_file(de->d_name))
fe51822e
LP		 1070 continue;
1071
b7def684 1072 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
44d91056 1073 if (!p) {
fe51822e
LP		 1074 r = -ENOMEM;
1075 goto fail;
1076 }
1077
ef42202a
ZJS		 1078 r = set_consume(m->unit_path_cache, p);
1079 if (r < 0)
fe51822e 1080 goto fail;
fe51822e
LP		 1081 }
1082
ed0d4022 1083 d = safe_closedir(d);
fe51822e
LP		 1084 }
1085
1086 return;
1087
1088fail:
da927ba9 1089 log_error_errno(r, "Failed to build unit path cache: %m");
fe51822e
LP		 1090
1091 set_free_free(m->unit_path_cache);
1092 m->unit_path_cache = NULL;
fe51822e
LP		 1093}
1094
9588bc32 1095
9ff1a6f1 1096static void manager_distribute_fds(Manager *m, FDSet *fds) {
9588bc32 1097 Iterator i;
9ff1a6f1 1098 Unit *u;
9588bc32
LP		 1099
1100 assert(m);
1101
1102 HASHMAP_FOREACH(u, m->units, i) {
1103
1104 if (fdset_size(fds) <= 0)
1105 break;
1106
9ff1a6f1
LP		 1107 if (!UNIT_VTABLE(u)->distribute_fds)
1108 continue;
9588bc32 1109
9ff1a6f1
LP		 1110 UNIT_VTABLE(u)->distribute_fds(u, fds);
1111 }
9588bc32
LP		 1112}
1113
a16e1123
LP		 1114int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1115 int r, q;
1116
1117 assert(m);
1118
a3c4eb07 1119 r = lookup_paths_init(&m->lookup_paths, m->running_as, true, NULL);
e801700e
ZJS		 1120 if (r < 0)
1121 return r;
5a1e9937 1122
a3c4eb07
LP		 1123 dual_timestamp_get(&m->generators_start_timestamp);
1124 r = manager_run_generators(m);
1125 dual_timestamp_get(&m->generators_finish_timestamp);
07719a21
LP		 1126 if (r < 0)
1127 return r;
1128
fe51822e
LP		 1129 manager_build_unit_path_cache(m);
1130
9f611ad8
LP		 1131 /* If we will deserialize make sure that during enumeration
1132 * this is already known, so we increase the counter here
1133 * already */
1134 if (serialization)
313cefa1 1135 m->n_reloading++;
9f611ad8 1136
a16e1123 1137 /* First, enumerate what we can from all config files */
718db961 1138 dual_timestamp_get(&m->units_load_start_timestamp);
ba64af90 1139 manager_enumerate(m);
718db961 1140 dual_timestamp_get(&m->units_load_finish_timestamp);
a16e1123
LP		 1141
1142 /* Second, deserialize if there is something to deserialize */
1cd974ed
ZJS		 1143 if (serialization)
1144 r = manager_deserialize(m, serialization, fds);
a16e1123 1145
01e10de3
LP		 1146 /* Any fds left? Find some unit which wants them. This is
1147 * useful to allow container managers to pass some file
1148 * descriptors to us pre-initialized. This enables
1149 * socket-based activation of entire containers. */
9ff1a6f1 1150 manager_distribute_fds(m, fds);
01e10de3 1151
d86f9d52
LP		 1152 /* We might have deserialized the notify fd, but if we didn't
1153 * then let's create the bus now */
1cd974ed
ZJS		 1154 q = manager_setup_notify(m);
1155 if (q < 0 && r == 0)
1156 r = q;
d86f9d52 1157
e3dd987c
LP		 1158 /* We might have deserialized the kdbus control fd, but if we
1159 * didn't, then let's create the bus now. */
1160 manager_setup_kdbus(m);
1161 manager_connect_bus(m, !!serialization);
8f8f05a9 1162 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
e3dd987c 1163
a16e1123 1164 /* Third, fire things up! */
007c6337 1165 manager_coldplug(m);
a16e1123 1166
9f611ad8 1167 if (serialization) {
a7556052 1168 assert(m->n_reloading > 0);
313cefa1 1169 m->n_reloading--;
71445ae7
LP		 1170
1171 /* Let's wait for the UnitNew/JobNew messages being
1172 * sent, before we notify that the reload is
1173 * finished */
1174 m->send_reloading_done = true;
9f611ad8
LP		 1175 }
1176
a16e1123 1177 return r;
f50e0a01
LP		 1178}
1179
4bd29fe5 1180int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) {
e5b5ae50 1181 int r;
7527cb52 1182 Transaction *tr;
e5b5ae50
LP		 1183
1184 assert(m);
1185 assert(type < _JOB_TYPE_MAX);
87f0e418 1186 assert(unit);
e5b5ae50 1187 assert(mode < _JOB_MODE_MAX);
60918275 1188
7358dc02
ZJS		 1189 if (mode == JOB_ISOLATE && type != JOB_START)
1190 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
c497c7a9 1191
7358dc02
ZJS		 1192 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1193 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
2528a7a6 1194
f2341e0a 1195 log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
9f04bd52 1196
c6497ccb 1197 type = job_type_collapse(type, unit);
e0209d83 1198
23ade460 1199 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
7527cb52
MS		 1200 if (!tr)
1201 return -ENOMEM;
11dd41ce 1202
4bd29fe5 1203 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false,
7527cb52 1204 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
b94fbd30 1205 mode == JOB_IGNORE_DEPENDENCIES, e);
7527cb52
MS		 1206 if (r < 0)
1207 goto tr_abort;
c497c7a9 1208
7527cb52
MS		 1209 if (mode == JOB_ISOLATE) {
1210 r = transaction_add_isolate_jobs(tr, m);
1211 if (r < 0)
1212 goto tr_abort;
1213 }
1214
1215 r = transaction_activate(tr, m, mode, e);
1216 if (r < 0)
1217 goto tr_abort;
e5b5ae50 1218
f2341e0a 1219 log_unit_debug(unit,
66870f90
ZJS		 1220 "Enqueued job %s/%s as %u", unit->id,
1221 job_type_to_string(type), (unsigned) tr->anchor_job->id);
f50e0a01 1222
e5b5ae50 1223 if (_ret)
b94fbd30 1224 *_ret = tr->anchor_job;
60918275 1225
7527cb52 1226 transaction_free(tr);
e5b5ae50 1227 return 0;
7527cb52
MS		 1228
1229tr_abort:
1230 transaction_abort(tr);
1231 transaction_free(tr);
1232 return r;
e5b5ae50 1233}
60918275 1234
53f18416 1235int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) {
28247076
LP		 1236 Unit *unit;
1237 int r;
1238
1239 assert(m);
1240 assert(type < _JOB_TYPE_MAX);
1241 assert(name);
1242 assert(mode < _JOB_MODE_MAX);
1243
c3090674
LP		 1244 r = manager_load_unit(m, name, NULL, NULL, &unit);
1245 if (r < 0)
28247076
LP		 1246 return r;
1247
53f18416
LP		 1248 return manager_add_job(m, type, unit, mode, e, ret);
1249}
1250
1251int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) {
4afd3348 1252 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
53f18416
LP		 1253 int r;
1254
1255 assert(m);
1256 assert(type < _JOB_TYPE_MAX);
1257 assert(name);
1258 assert(mode < _JOB_MODE_MAX);
1259
1260 r = manager_add_job_by_name(m, type, name, mode, &error, ret);
1261 if (r < 0)
1262 return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r));
1263
1264 return r;
28247076
LP		 1265}
1266
60918275
LP		 1267Job *manager_get_job(Manager *m, uint32_t id) {
1268 assert(m);
1269
1270 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1271}
1272
87f0e418 1273Unit *manager_get_unit(Manager *m, const char *name) {
60918275
LP		 1274 assert(m);
1275 assert(name);
1276
87f0e418 1277 return hashmap_get(m->units, name);
60918275
LP		 1278}
1279
c1e1601e 1280unsigned manager_dispatch_load_queue(Manager *m) {
595ed347 1281 Unit *u;
c1e1601e 1282 unsigned n = 0;
60918275
LP		 1283
1284 assert(m);
1285
223dabab
LP		 1286 /* Make sure we are not run recursively */
1287 if (m->dispatching_load_queue)
c1e1601e 1288 return 0;
223dabab
LP		 1289
1290 m->dispatching_load_queue = true;
1291
87f0e418 1292 /* Dispatches the load queue. Takes a unit from the queue and
60918275
LP		 1293 * tries to load its data until the queue is empty */
1294
595ed347
MS		 1295 while ((u = m->load_queue)) {
1296 assert(u->in_load_queue);
034c6ed7 1297
595ed347 1298 unit_load(u);
c1e1601e 1299 n++;
60918275
LP		 1300 }
1301
223dabab 1302 m->dispatching_load_queue = false;
c1e1601e 1303 return n;
60918275
LP		 1304}
1305
c2756a68
LP		 1306int manager_load_unit_prepare(
1307 Manager *m,
1308 const char *name,
1309 const char *path,
718db961 1310 sd_bus_error *e,
c2756a68
LP		 1311 Unit **_ret) {
1312
87f0e418 1313 Unit *ret;
7d17cfbc 1314 UnitType t;
60918275
LP		 1315 int r;
1316
1317 assert(m);
9e2f7c11 1318 assert(name || path);
60918275 1319
db06e3b6
LP		 1320 /* This will prepare the unit for loading, but not actually
1321 * load anything from disk. */
0301abf4 1322
718db961
LP		 1323 if (path && !is_path(path))
1324 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
9e2f7c11
LP		 1325
1326 if (!name)
2b6bf07d 1327 name = basename(path);
9e2f7c11 1328
7d17cfbc
MS		 1329 t = unit_name_to_type(name);
1330
5d512d54
LN		 1331 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) {
1332 if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE))
1333 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name);
1334
718db961 1335 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
5d512d54 1336 }
60918275 1337
7d17cfbc
MS		 1338 ret = manager_get_unit(m, name);
1339 if (ret) {
034c6ed7 1340 *_ret = ret;
413d6313 1341 return 1;
034c6ed7 1342 }
60918275 1343
7d17cfbc
MS		 1344 ret = unit_new(m, unit_vtable[t]->object_size);
1345 if (!ret)
60918275
LP		 1346 return -ENOMEM;
1347
7d17cfbc 1348 if (path) {
ac155bb8
MS		 1349 ret->fragment_path = strdup(path);
1350 if (!ret->fragment_path) {
0301abf4
LP		 1351 unit_free(ret);
1352 return -ENOMEM;
1353 }
7d17cfbc 1354 }
0301abf4 1355
1058cbf2
ZJS		 1356 r = unit_add_name(ret, name);
1357 if (r < 0) {
87f0e418 1358 unit_free(ret);
1ffba6fe 1359 return r;
60918275
LP		 1360 }
1361
87f0e418 1362 unit_add_to_load_queue(ret);
c1e1601e 1363 unit_add_to_dbus_queue(ret);
949061f0 1364 unit_add_to_gc_queue(ret);
c1e1601e 1365
db06e3b6
LP		 1366 if (_ret)
1367 *_ret = ret;
1368
1369 return 0;
1370}
1371
c2756a68
LP		 1372int manager_load_unit(
1373 Manager *m,
1374 const char *name,
1375 const char *path,
718db961 1376 sd_bus_error *e,
c2756a68
LP		 1377 Unit **_ret) {
1378
db06e3b6
LP		 1379 int r;
1380
1381 assert(m);
1382
1383 /* This will load the service information files, but not actually
1384 * start any services or anything. */
1385
c3090674
LP		 1386 r = manager_load_unit_prepare(m, name, path, e, _ret);
1387 if (r != 0)
db06e3b6
LP		 1388 return r;
1389
f50e0a01 1390 manager_dispatch_load_queue(m);
60918275 1391
9e2f7c11 1392 if (_ret)
413d6313 1393 *_ret = unit_follow_merge(*_ret);
9e2f7c11 1394
60918275
LP		 1395 return 0;
1396}
a66d02c3 1397
cea8e32e 1398void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1399 Iterator i;
a66d02c3
LP		 1400 Job *j;
1401
1402 assert(s);
1403 assert(f);
1404
034c6ed7 1405 HASHMAP_FOREACH(j, s->jobs, i)
cea8e32e 1406 job_dump(j, f, prefix);
a66d02c3
LP		 1407}
1408
87f0e418 1409void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1410 Iterator i;
87f0e418 1411 Unit *u;
11dd41ce 1412 const char *t;
a66d02c3
LP		 1413
1414 assert(s);
1415 assert(f);
1416
87f0e418 1417 HASHMAP_FOREACH_KEY(u, t, s->units, i)
ac155bb8 1418 if (u->id == t)
87f0e418 1419 unit_dump(u, f, prefix);
a66d02c3 1420}
7fad411c
LP		 1421
1422void manager_clear_jobs(Manager *m) {
1423 Job *j;
1424
1425 assert(m);
1426
7fad411c 1427 while ((j = hashmap_first(m->jobs)))
5273510e
MS		 1428 /* No need to recurse. We're cancelling all jobs. */
1429 job_finish_and_invalidate(j, JOB_CANCELED, false);
7fad411c 1430}
83c60c9f 1431
752b5905
LP		 1432static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1433 Manager *m = userdata;
83c60c9f 1434 Job *j;
034c6ed7 1435
752b5905
LP		 1436 assert(source);
1437 assert(m);
9152c765 1438
034c6ed7 1439 while ((j = m->run_queue)) {
ac1135be 1440 assert(j->installed);
034c6ed7
LP		 1441 assert(j->in_run_queue);
1442
1443 job_run_and_invalidate(j);
9152c765 1444 }
034c6ed7 1445
a0b64226 1446 if (m->n_running_jobs > 0)
03b717a3
MS		 1447 manager_watch_jobs_in_progress(m);
1448
31a7eb86
ZJS		 1449 if (m->n_on_console > 0)
1450 manager_watch_idle_pipe(m);
1451
752b5905 1452 return 1;
c1e1601e
LP		 1453}
1454
9588bc32 1455static unsigned manager_dispatch_dbus_queue(Manager *m) {
c1e1601e 1456 Job *j;
595ed347 1457 Unit *u;
c1e1601e
LP		 1458 unsigned n = 0;
1459
1460 assert(m);
1461
1462 if (m->dispatching_dbus_queue)
1463 return 0;
1464
1465 m->dispatching_dbus_queue = true;
1466
595ed347
MS		 1467 while ((u = m->dbus_unit_queue)) {
1468 assert(u->in_dbus_queue);
c1e1601e 1469
595ed347 1470 bus_unit_send_change_signal(u);
c1e1601e
LP		 1471 n++;
1472 }
1473
1474 while ((j = m->dbus_job_queue)) {
1475 assert(j->in_dbus_queue);
1476
1477 bus_job_send_change_signal(j);
1478 n++;
1479 }
1480
1481 m->dispatching_dbus_queue = false;
71445ae7
LP		 1482
1483 if (m->send_reloading_done) {
1484 m->send_reloading_done = false;
1485
718db961 1486 bus_manager_send_reloading(m, false);
71445ae7
LP		 1487 }
1488
718db961
LP		 1489 if (m->queued_message)
1490 bus_send_queued_message(m);
1491
c1e1601e 1492 return n;
9152c765
LP		 1493}
1494
96d66d89 1495static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) {
5ba6985b
LP		 1496 _cleanup_strv_free_ char **tags = NULL;
1497
1498 assert(m);
1499 assert(u);
1500 assert(buf);
1501 assert(n > 0);
1502
1503 tags = strv_split(buf, "\n\r");
1504 if (!tags) {
1505 log_oom();
1506 return;
1507 }
1508
5ba6985b 1509 if (UNIT_VTABLE(u)->notify_message)
a354329f 1510 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
34959677
TG		 1511 else
1512 log_unit_debug(u, "Got notification message for unit. Ignoring.");
5ba6985b
LP		 1513}
1514
718db961 1515static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
b215b0ed 1516 _cleanup_fdset_free_ FDSet *fds = NULL;
718db961 1517 Manager *m = userdata;
b215b0ed
DH		 1518
1519 char buf[NOTIFY_BUFFER_MAX+1];
1520 struct iovec iovec = {
1521 .iov_base = buf,
1522 .iov_len = sizeof(buf)-1,
1523 };
1524 union {
1525 struct cmsghdr cmsghdr;
1526 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1527 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
1528 } control = {};
1529 struct msghdr msghdr = {
1530 .msg_iov = &iovec,
1531 .msg_iovlen = 1,
1532 .msg_control = &control,
1533 .msg_controllen = sizeof(control),
1534 };
1535
1536 struct cmsghdr *cmsg;
1537 struct ucred *ucred = NULL;
1538 bool found = false;
1539 Unit *u1, *u2, *u3;
1540 int r, *fd_array = NULL;
1541 unsigned n_fds = 0;
8c47c732
LP		 1542 ssize_t n;
1543
1544 assert(m);
718db961
LP		 1545 assert(m->notify_fd == fd);
1546
1547 if (revents != EPOLLIN) {
1548 log_warning("Got unexpected poll event for notify fd.");
1549 return 0;
1550 }
8c47c732 1551
b215b0ed
DH		 1552 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1553 if (n < 0) {
1554 if (errno == EAGAIN || errno == EINTR)
1555 return 0;
8c47c732 1556
b215b0ed
DH		 1557 return -errno;
1558 }
a354329f 1559
b215b0ed
DH		 1560 CMSG_FOREACH(cmsg, &msghdr) {
1561 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
a354329f 1562
b215b0ed
DH		 1563 fd_array = (int*) CMSG_DATA(cmsg);
1564 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
a354329f 1565
b215b0ed
DH		 1566 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1567 cmsg->cmsg_type == SCM_CREDENTIALS &&
1568 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
a354329f 1569
b215b0ed 1570 ucred = (struct ucred*) CMSG_DATA(cmsg);
a354329f 1571 }
b215b0ed 1572 }
a354329f 1573
b215b0ed
DH		 1574 if (n_fds > 0) {
1575 assert(fd_array);
a354329f 1576
b215b0ed
DH		 1577 r = fdset_new_array(&fds, fd_array, n_fds);
1578 if (r < 0) {
1579 close_many(fd_array, n_fds);
1580 return log_oom();
a354329f 1581 }
b215b0ed 1582 }
8c47c732 1583
b215b0ed
DH		 1584 if (!ucred || ucred->pid <= 0) {
1585 log_warning("Received notify message without valid credentials. Ignoring.");
1586 return 0;
1587 }
8c47c732 1588
b215b0ed
DH		 1589 if ((size_t) n >= sizeof(buf)) {
1590 log_warning("Received notify message exceeded maximum size. Ignoring.");
1591 return 0;
1592 }
8c47c732 1593
b215b0ed 1594 buf[n] = 0;
8c47c732 1595
b215b0ed
DH		 1596 /* Notify every unit that might be interested, but try
1597 * to avoid notifying the same one multiple times. */
1598 u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
1599 if (u1) {
1600 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
1601 found = true;
1602 }
5ba6985b 1603
b215b0ed
DH		 1604 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
1605 if (u2 && u2 != u1) {
1606 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
1607 found = true;
1608 }
5ba6985b 1609
b215b0ed
DH		 1610 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
1611 if (u3 && u3 != u2 && u3 != u1) {
1612 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
1613 found = true;
1614 }
8c47c732 1615
b215b0ed
DH		 1616 if (!found)
1617 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
a354329f 1618
b215b0ed
DH		 1619 if (fdset_size(fds) > 0)
1620 log_warning("Got auxiliary fds with notification message, closing all.");
8c47c732
LP		 1621
1622 return 0;
1623}
1624
96d66d89 1625static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
5ba6985b
LP		 1626 assert(m);
1627 assert(u);
1628 assert(si);
1629
f2341e0a 1630 log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
5ba6985b
LP		 1631
1632 unit_unwatch_pid(u, si->si_pid);
e57051f5
TH		 1633
1634 if (UNIT_VTABLE(u)->sigchld_event)
1635 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
5ba6985b
LP		 1636}
1637
034c6ed7 1638static int manager_dispatch_sigchld(Manager *m) {
9152c765
LP		 1639 assert(m);
1640
1641 for (;;) {
b92bea5d 1642 siginfo_t si = {};
9152c765 1643
4112df16
LP		 1644 /* First we call waitd() for a PID and do not reap the
1645 * zombie. That way we can still access /proc/$PID for
1646 * it while it is a zombie. */
1647 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
acbb0225
LP		 1648
1649 if (errno == ECHILD)
1650 break;
1651
4112df16
LP		 1652 if (errno == EINTR)
1653 continue;
1654
9152c765 1655 return -errno;
acbb0225 1656 }
9152c765 1657
4112df16 1658 if (si.si_pid <= 0)
9152c765
LP		 1659 break;
1660
15d5d9d9 1661 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
7fd1b19b 1662 _cleanup_free_ char *name = NULL;
70af4d17 1663 Unit *u1, *u2, *u3;
4112df16 1664
87d2c1ff 1665 get_process_comm(si.si_pid, &name);
4112df16 1666
5ba6985b
LP		 1667 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1668 si.si_pid, strna(name),
1669 sigchld_code_to_string(si.si_code),
1670 si.si_status,
1671 strna(si.si_code == CLD_EXITED
1672 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1673 : signal_to_string(si.si_status)));
1674
1675 /* And now figure out the unit this belongs
1676 * to, it might be multiple... */
b3ac818b 1677 u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
70af4d17
LP		 1678 if (u1)
1679 invoke_sigchld_event(m, u1, &si);
fea72cc0 1680 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1681 if (u2 && u2 != u1)
1682 invoke_sigchld_event(m, u2, &si);
fea72cc0 1683 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1684 if (u3 && u3 != u2 && u3 != u1)
1685 invoke_sigchld_event(m, u3, &si);
5ba6985b 1686 }
8c47c732 1687
4112df16
LP		 1688 /* And now, we actually reap the zombie. */
1689 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1690 if (errno == EINTR)
1691 continue;
1692
1693 return -errno;
1694 }
9152c765
LP		 1695 }
1696
1697 return 0;
1698}
1699
7d793605 1700static int manager_start_target(Manager *m, const char *name, JobMode mode) {
4afd3348 1701 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
28247076 1702 int r;
398ef8ba 1703
f2341e0a 1704 log_debug("Activating special unit %s", name);
1e001f52 1705
4bd29fe5 1706 r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL);
bd0af849 1707 if (r < 0)
f2341e0a 1708 log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
a1b256b0
LP		 1709
1710 return r;
28247076
LP		 1711}
1712
718db961
LP		 1713static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1714 Manager *m = userdata;
9152c765
LP		 1715 ssize_t n;
1716 struct signalfd_siginfo sfsi;
1717 bool sigchld = false;
dacd6cee 1718 int r;
9152c765
LP		 1719
1720 assert(m);
718db961
LP		 1721 assert(m->signal_fd == fd);
1722
1723 if (revents != EPOLLIN) {
1724 log_warning("Got unexpected events from signal file descriptor.");
1725 return 0;
1726 }
9152c765
LP		 1727
1728 for (;;) {
718db961 1729 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
57cb4adf 1730 if (n != sizeof(sfsi)) {
9152c765
LP		 1731
1732 if (n >= 0)
1733 return -EIO;
1734
63090775 1735 if (errno == EINTR || errno == EAGAIN)
acbb0225 1736 break;
9152c765
LP		 1737
1738 return -errno;
1739 }
1740
4daf54a8 1741 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
b2c23da8 1742 (sfsi.ssi_signo == SIGTERM && m->running_as == MANAGER_USER)
4daf54a8
ZJS		 1743 ? LOG_DEBUG : LOG_INFO,
1744 &sfsi);
1e001f52 1745
b9cd2ec1
LP		 1746 switch (sfsi.ssi_signo) {
1747
4112df16 1748 case SIGCHLD:
9152c765 1749 sigchld = true;
b9cd2ec1
LP		 1750 break;
1751
6632c602 1752 case SIGTERM:
b2c23da8 1753 if (m->running_as == MANAGER_SYSTEM) {
db06e3b6
LP		 1754 /* This is for compatibility with the
1755 * original sysvinit */
e11dc4a2 1756 m->exit_code = MANAGER_REEXECUTE;
a1b256b0
LP		 1757 break;
1758 }
84e9af1e 1759
a1b256b0 1760 /* Fall through */
e11dc4a2
LP		 1761
1762 case SIGINT:
b2c23da8 1763 if (m->running_as == MANAGER_SYSTEM) {
2e5c94b9 1764
d1f6b1b4
LP		 1765 /* If the user presses C-A-D more than
1766 * 7 times within 2s, we reboot
2e5c94b9
LP		 1767 * immediately. */
1768
1769 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1770 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1771 else {
1772 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
a626df3e 1773 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
2e5c94b9
LP		 1774 m->exit_code = MANAGER_REBOOT;
1775 }
1776
84e9af1e
LP		 1777 break;
1778 }
1779
a1b256b0 1780 /* Run the exit target if there is one, if not, just exit. */
0003d1ab 1781 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
a1b256b0
LP		 1782 m->exit_code = MANAGER_EXIT;
1783 return 0;
1784 }
1785
1786 break;
84e9af1e 1787
28247076 1788 case SIGWINCH:
b2c23da8 1789 if (m->running_as == MANAGER_SYSTEM)
7d793605 1790 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
84e9af1e 1791
28247076
LP		 1792 /* This is a nop on non-init */
1793 break;
84e9af1e 1794
28247076 1795 case SIGPWR:
b2c23da8 1796 if (m->running_as == MANAGER_SYSTEM)
7d793605 1797 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
84e9af1e 1798
28247076 1799 /* This is a nop on non-init */
84e9af1e 1800 break;
6632c602 1801
1005d14f 1802 case SIGUSR1: {
57ee42ce
LP		 1803 Unit *u;
1804
1805 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1806
1807 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1808 log_info("Trying to reconnect to bus...");
3996fbe2 1809 bus_init(m, true);
57ee42ce
LP		 1810 }
1811
1812 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1813 log_info("Loading D-Bus service...");
7d793605 1814 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
57ee42ce
LP		 1815 }
1816
1817 break;
1818 }
1819
2149e37c 1820 case SIGUSR2: {
718db961
LP		 1821 _cleanup_free_ char *dump = NULL;
1822 _cleanup_fclose_ FILE *f = NULL;
2149e37c
LP		 1823 size_t size;
1824
718db961
LP		 1825 f = open_memstream(&dump, &size);
1826 if (!f) {
dacd6cee 1827 log_warning_errno(errno, "Failed to allocate memory stream: %m");
2149e37c
LP		 1828 break;
1829 }
1830
1831 manager_dump_units(m, f, "\t");
1832 manager_dump_jobs(m, f, "\t");
1833
dacd6cee
LP		 1834 r = fflush_and_check(f);
1835 if (r < 0) {
1836 log_warning_errno(r, "Failed to write status stream: %m");
b2cdc666
DM		 1837 break;
1838 }
1839
2149e37c 1840 log_dump(LOG_INFO, dump);
1005d14f 1841 break;
2149e37c 1842 }
1005d14f 1843
a16e1123
LP		 1844 case SIGHUP:
1845 m->exit_code = MANAGER_RELOAD;
1846 break;
1847
7d793605 1848 default: {
253ee27a 1849
0003d1ab
LP		 1850 /* Starting SIGRTMIN+0 */
1851 static const char * const target_table[] = {
7d793605
LP		 1852 [0] = SPECIAL_DEFAULT_TARGET,
1853 [1] = SPECIAL_RESCUE_TARGET,
f057408c 1854 [2] = SPECIAL_EMERGENCY_TARGET,
7d793605
LP		 1855 [3] = SPECIAL_HALT_TARGET,
1856 [4] = SPECIAL_POWEROFF_TARGET,
0003d1ab
LP		 1857 [5] = SPECIAL_REBOOT_TARGET,
1858 [6] = SPECIAL_KEXEC_TARGET
1859 };
1860
1861 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1862 static const ManagerExitCode code_table[] = {
1863 [0] = MANAGER_HALT,
1864 [1] = MANAGER_POWEROFF,
1865 [2] = MANAGER_REBOOT,
1866 [3] = MANAGER_KEXEC
7d793605
LP		 1867 };
1868
1869 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
0003d1ab 1870 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
764e9b5f
MS		 1871 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1872 manager_start_target(m, target_table[idx],
1873 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
7d793605
LP		 1874 break;
1875 }
1876
0003d1ab
LP		 1877 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1878 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1879 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1880 break;
1881 }
1882
0658666b
LP		 1883 switch (sfsi.ssi_signo - SIGRTMIN) {
1884
1885 case 20:
d450b6f2 1886 manager_set_show_status(m, SHOW_STATUS_YES);
0658666b
LP		 1887 break;
1888
1889 case 21:
d450b6f2 1890 manager_set_show_status(m, SHOW_STATUS_NO);
0658666b
LP		 1891 break;
1892
253ee27a
LP		 1893 case 22:
1894 log_set_max_level(LOG_DEBUG);
4cee3a78 1895 log_info("Setting log level to debug.");
253ee27a
LP		 1896 break;
1897
1898 case 23:
1899 log_set_max_level(LOG_INFO);
4cee3a78 1900 log_info("Setting log level to info.");
253ee27a
LP		 1901 break;
1902
600b704e 1903 case 24:
b2c23da8 1904 if (m->running_as == MANAGER_USER) {
600b704e
LP		 1905 m->exit_code = MANAGER_EXIT;
1906 return 0;
1907 }
1908
1909 /* This is a nop on init */
1910 break;
1911
4cfa2c99 1912 case 26:
c1dc6153 1913 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
4cfa2c99
LP		 1914 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1915 log_notice("Setting log target to journal-or-kmsg.");
1916 break;
1917
253ee27a
LP		 1918 case 27:
1919 log_set_target(LOG_TARGET_CONSOLE);
1920 log_notice("Setting log target to console.");
1921 break;
1922
1923 case 28:
1924 log_set_target(LOG_TARGET_KMSG);
1925 log_notice("Setting log target to kmsg.");
1926 break;
1927
0658666b 1928 default:
4e240ab0 1929 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
0658666b 1930 }
b9cd2ec1 1931 }
7d793605 1932 }
9152c765
LP		 1933 }
1934
1935 if (sigchld)
7b77ed8c 1936 manager_dispatch_sigchld(m);
034c6ed7
LP		 1937
1938 return 0;
1939}
1940
718db961
LP		 1941static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1942 Manager *m = userdata;
1943 Iterator i;
1944 Unit *u;
034c6ed7
LP		 1945
1946 assert(m);
718db961 1947 assert(m->time_change_fd == fd);
034c6ed7 1948
718db961 1949 log_struct(LOG_INFO,
e2cc6eca
LP		 1950 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1951 LOG_MESSAGE("Time has been changed"),
718db961 1952 NULL);
034c6ed7 1953
718db961
LP		 1954 /* Restart the watch */
1955 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
03e334a1 1956 m->time_change_fd = safe_close(m->time_change_fd);
ef734fd6 1957
718db961 1958 manager_setup_time_change(m);
4e434314 1959
718db961
LP		 1960 HASHMAP_FOREACH(u, m->units, i)
1961 if (UNIT_VTABLE(u)->time_change)
1962 UNIT_VTABLE(u)->time_change(u);
ea430986 1963
718db961
LP		 1964 return 0;
1965}
ea430986 1966
718db961
LP		 1967static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1968 Manager *m = userdata;
8742514c 1969
718db961
LP		 1970 assert(m);
1971 assert(m->idle_pipe[2] == fd);
8742514c 1972
718db961 1973 m->no_console_output = m->n_on_console > 0;
03b717a3 1974
718db961 1975 manager_close_idle_pipe(m);
03b717a3 1976
718db961
LP		 1977 return 0;
1978}
31a7eb86 1979
718db961
LP		 1980static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1981 Manager *m = userdata;
fd08a840
ZJS		 1982 int r;
1983 uint64_t next;
31a7eb86 1984
718db961 1985 assert(m);
fd08a840 1986 assert(source);
9152c765 1987
718db961 1988 manager_print_jobs_in_progress(m);
fd08a840
ZJS		 1989
1990 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1991 r = sd_event_source_set_time(source, next);
1992 if (r < 0)
1993 return r;
1994
1995 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
9152c765
LP		 1996}
1997
1998int manager_loop(Manager *m) {
1999 int r;
9152c765 2000
fac9f8df 2001 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
ea430986 2002
9152c765 2003 assert(m);
f755e3b7 2004 m->exit_code = MANAGER_OK;
9152c765 2005
fe51822e 2006 /* Release the path cache */
97044145 2007 m->unit_path_cache = set_free_free(m->unit_path_cache);
fe51822e 2008
b0c918b9
LP		 2009 manager_check_finished(m);
2010
a4312405 2011 /* There might still be some zombies hanging around from
f3669545 2012 * before we were exec()'ed. Let's reap them. */
e96d6be7
LP		 2013 r = manager_dispatch_sigchld(m);
2014 if (r < 0)
a4312405
LP		 2015 return r;
2016
f755e3b7 2017 while (m->exit_code == MANAGER_OK) {
718db961 2018 usec_t wait_usec;
9152c765 2019
947292ee 2020 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && m->running_as == MANAGER_SYSTEM)
e96d6be7
LP		 2021 watchdog_ping();
2022
ea430986
LP		 2023 if (!ratelimit_test(&rl)) {
2024 /* Yay, something is going seriously wrong, pause a little */
2025 log_warning("Looping too fast. Throttling execution a little.");
2026 sleep(1);
2027 }
2028
37a8e683 2029 if (manager_dispatch_load_queue(m) > 0)
23a177ef
LP		 2030 continue;
2031
cf1265e1 2032 if (manager_dispatch_gc_queue(m) > 0)
701cc384
LP		 2033 continue;
2034
cf1265e1 2035 if (manager_dispatch_cleanup_queue(m) > 0)
c1e1601e 2036 continue;
034c6ed7 2037
cf1265e1 2038 if (manager_dispatch_cgroup_queue(m) > 0)
c1e1601e
LP		 2039 continue;
2040
c1e1601e 2041 if (manager_dispatch_dbus_queue(m) > 0)
ea430986 2042 continue;
ea430986 2043
c757a65b 2044 /* Sleep for half the watchdog time */
947292ee 2045 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && m->running_as == MANAGER_SYSTEM) {
718db961
LP		 2046 wait_usec = m->runtime_watchdog / 2;
2047 if (wait_usec <= 0)
2048 wait_usec = 1;
c757a65b 2049 } else
3a43da28 2050 wait_usec = USEC_INFINITY;
9152c765 2051
718db961 2052 r = sd_event_run(m->event, wait_usec);
23bbb0de
MS		 2053 if (r < 0)
2054 return log_error_errno(r, "Failed to run event loop: %m");
a16e1123 2055 }
957ca890 2056
a16e1123 2057 return m->exit_code;
83c60c9f 2058}
ea430986 2059
718db961 2060int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
ede3a796 2061 _cleanup_free_ char *n = NULL;
ea430986 2062 Unit *u;
80fbf05e 2063 int r;
ea430986
LP		 2064
2065 assert(m);
2066 assert(s);
2067 assert(_u);
2068
ede3a796
LP		 2069 r = unit_name_from_dbus_path(s, &n);
2070 if (r < 0)
2071 return r;
ea430986 2072
80fbf05e 2073 r = manager_load_unit(m, n, NULL, e, &u);
80fbf05e
MS		 2074 if (r < 0)
2075 return r;
ea430986
LP		 2076
2077 *_u = u;
2078
2079 return 0;
2080}
86fbf370
LP		 2081
2082int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
718db961 2083 const char *p;
86fbf370 2084 unsigned id;
718db961 2085 Job *j;
86fbf370
LP		 2086 int r;
2087
2088 assert(m);
2089 assert(s);
2090 assert(_j);
2091
718db961
LP		 2092 p = startswith(s, "/org/freedesktop/systemd1/job/");
2093 if (!p)
86fbf370
LP		 2094 return -EINVAL;
2095
718db961 2096 r = safe_atou(p, &id);
8742514c 2097 if (r < 0)
86fbf370
LP		 2098 return r;
2099
8742514c
LP		 2100 j = manager_get_job(m, id);
2101 if (!j)
86fbf370
LP		 2102 return -ENOENT;
2103
2104 *_j = j;
2105
2106 return 0;
2107}
dfcd764e 2108
4927fcae 2109void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
e537352b 2110
4927fcae 2111#ifdef HAVE_AUDIT
2ba11090 2112 _cleanup_free_ char *p = NULL;
0aa281df 2113 const char *msg;
7410616c 2114 int audit_fd, r;
e537352b 2115
a1a078ee
LP		 2116 if (m->running_as != MANAGER_SYSTEM)
2117 return;
2118
c1165f82
LP		 2119 audit_fd = get_audit_fd();
2120 if (audit_fd < 0)
e537352b
LP		 2121 return;
2122
bbd3a7ba
LP		 2123 /* Don't generate audit events if the service was already
2124 * started and we're just deserializing */
a7556052 2125 if (m->n_reloading > 0)
bbd3a7ba
LP		 2126 return;
2127
ac155bb8 2128 if (u->type != UNIT_SERVICE)
f1dd0c3f
LP		 2129 return;
2130
7410616c
LP		 2131 r = unit_name_to_prefix_and_instance(u->id, &p);
2132 if (r < 0) {
2133 log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
e537352b
LP		 2134 return;
2135 }
2136
63c372cb 2137 msg = strjoina("unit=", p);
0aa281df
LP		 2138 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2139 if (errno == EPERM)
391ade86 2140 /* We aren't allowed to send audit messages?
44785992 2141 * Then let's not retry again. */
c1165f82 2142 close_audit_fd();
0aa281df 2143 else
56f64d95 2144 log_warning_errno(errno, "Failed to send audit message: %m");
391ade86 2145 }
4927fcae 2146#endif
e537352b 2147
e537352b
LP		 2148}
2149
e983b760 2150void manager_send_unit_plymouth(Manager *m, Unit *u) {
1d749d04 2151 union sockaddr_union sa = PLYMOUTH_SOCKET;
2ba11090 2152
e983b760 2153 int n = 0;
2ba11090
ZJS		 2154 _cleanup_free_ char *message = NULL;
2155 _cleanup_close_ int fd = -1;
e983b760
LP		 2156
2157 /* Don't generate plymouth events if the service was already
2158 * started and we're just deserializing */
a7556052 2159 if (m->n_reloading > 0)
e983b760
LP		 2160 return;
2161
b2c23da8 2162 if (m->running_as != MANAGER_SYSTEM)
e983b760
LP		 2163 return;
2164
75f86906 2165 if (detect_container() > 0)
3772995a
LP		 2166 return;
2167
ac155bb8
MS		 2168 if (u->type != UNIT_SERVICE &&
2169 u->type != UNIT_MOUNT &&
2170 u->type != UNIT_SWAP)
e983b760
LP		 2171 return;
2172
2173 /* We set SOCK_NONBLOCK here so that we rather drop the
2174 * message then wait for plymouth */
e62d8c39
ZJS		 2175 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2176 if (fd < 0) {
56f64d95 2177 log_error_errno(errno, "socket() failed: %m");
e983b760
LP		 2178 return;
2179 }
2180
96707269 2181 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
e983b760 2182
2ba11090 2183 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2184 log_error_errno(errno, "connect() failed: %m");
2ba11090 2185 return;
e983b760
LP		 2186 }
2187
ac155bb8 2188 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
0d0f0c50 2189 log_oom();
2ba11090 2190 return;
e983b760
LP		 2191 }
2192
2193 errno = 0;
2ba11090
ZJS		 2194 if (write(fd, message, n + 1) != n + 1)
2195 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2196 log_error_errno(errno, "Failed to write Plymouth message: %m");
e983b760
LP		 2197}
2198
d8d5ab98 2199int manager_open_serialization(Manager *m, FILE **_f) {
8e33886e 2200 const char *path;
df28bc08 2201 int fd = -1;
a16e1123
LP		 2202 FILE *f;
2203
2204 assert(_f);
2205
b2c23da8 2206 path = m->running_as == MANAGER_SYSTEM ? "/run/systemd" : "/tmp";
8e33886e 2207 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
d86f9d52 2208 if (fd < 0)
a16e1123 2209 return -errno;
a16e1123 2210
a16e1123 2211 log_debug("Serializing state to %s", path);
a16e1123 2212
01e10de3 2213 f = fdopen(fd, "w+");
d86f9d52 2214 if (!f) {
03e334a1 2215 safe_close(fd);
a16e1123 2216 return -errno;
d86f9d52 2217 }
a16e1123
LP		 2218
2219 *_f = f;
2220
2221 return 0;
2222}
2223
b3680f49 2224int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
a16e1123
LP		 2225 Iterator i;
2226 Unit *u;
2227 const char *t;
4a9fd066 2228 char **e;
a16e1123
LP		 2229 int r;
2230
2231 assert(m);
2232 assert(f);
2233 assert(fds);
2234
313cefa1 2235 m->n_reloading++;
38c52d46 2236
1fa2f38f 2237 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
01d67b43 2238 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
33c5fae9
LP		 2239 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2240 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
01d67b43 2241
915b3753 2242 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
915b3753 2243 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
718db961 2244 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
e9ddabc2 2245 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
f38ed060 2246
26a1efdf 2247 if (!in_initrd()) {
915b3753 2248 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
f38ed060 2249 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
718db961
LP		 2250 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2251 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2252 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2253 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2254 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2255 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
f38ed060 2256 }
47a483a1 2257
b3680f49
HH		 2258 if (!switching_root) {
2259 STRV_FOREACH(e, m->environment) {
2260 _cleanup_free_ char *ce;
4a9fd066 2261
b3680f49 2262 ce = cescape(*e);
e3dd987c
LP		 2263 if (!ce)
2264 return -ENOMEM;
2265
2266 fprintf(f, "env=%s\n", *e);
b3680f49 2267 }
4a9fd066
OS		 2268 }
2269
d86f9d52
LP		 2270 if (m->notify_fd >= 0) {
2271 int copy;
2272
2273 copy = fdset_put_dup(fds, m->notify_fd);
2274 if (copy < 0)
2275 return copy;
2276
2277 fprintf(f, "notify-fd=%i\n", copy);
2278 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2279 }
2280
e3dd987c
LP		 2281 if (m->kdbus_fd >= 0) {
2282 int copy;
2283
2284 copy = fdset_put_dup(fds, m->kdbus_fd);
2285 if (copy < 0)
2286 return copy;
2287
2288 fprintf(f, "kdbus-fd=%i\n", copy);
2289 }
2290
8f8f05a9 2291 bus_track_serialize(m->subscribed, f);
6fa48533 2292
f2382a94
LP		 2293 fputc('\n', f);
2294
a16e1123 2295 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
ac155bb8 2296 if (u->id != t)
a16e1123
LP		 2297 continue;
2298
a16e1123 2299 /* Start marker */
ac155bb8 2300 fputs(u->id, f);
a16e1123
LP		 2301 fputc('\n', f);
2302
6fa48533
LP		 2303 r = unit_serialize(u, f, fds, !switching_root);
2304 if (r < 0) {
313cefa1 2305 m->n_reloading--;
a16e1123 2306 return r;
38c52d46 2307 }
a16e1123
LP		 2308 }
2309
a7556052 2310 assert(m->n_reloading > 0);
313cefa1 2311 m->n_reloading--;
38c52d46 2312
a16e1123
LP		 2313 if (ferror(f))
2314 return -EIO;
2315
b23de6af
LP		 2316 r = bus_fdset_add_all(m, fds);
2317 if (r < 0)
2318 return r;
2319
a16e1123
LP		 2320 return 0;
2321}
2322
2323int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2324 int r = 0;
2325
2326 assert(m);
2327 assert(f);
2328
2329 log_debug("Deserializing state...");
2330
313cefa1 2331 m->n_reloading++;
82c64bf5 2332
10f8e83c 2333 for (;;) {
20c03b7b 2334 char line[LINE_MAX], *l;
10f8e83c
LP		 2335
2336 if (!fgets(line, sizeof(line), f)) {
2337 if (feof(f))
2338 r = 0;
2339 else
2340 r = -errno;
2341
2342 goto finish;
2343 }
2344
2345 char_array_0(line);
2346 l = strstrip(line);
2347
2348 if (l[0] == 0)
2349 break;
2350
01d67b43
LP		 2351 if (startswith(l, "current-job-id=")) {
2352 uint32_t id;
2353
2354 if (safe_atou32(l+15, &id) < 0)
e5035a27 2355 log_debug("Failed to parse current job id value %s", l+15);
01d67b43
LP		 2356 else
2357 m->current_job_id = MAX(m->current_job_id, id);
718db961 2358
33c5fae9
LP		 2359 } else if (startswith(l, "n-installed-jobs=")) {
2360 uint32_t n;
2361
2362 if (safe_atou32(l+17, &n) < 0)
e5035a27 2363 log_debug("Failed to parse installed jobs counter %s", l+17);
33c5fae9
LP		 2364 else
2365 m->n_installed_jobs += n;
718db961 2366
33c5fae9
LP		 2367 } else if (startswith(l, "n-failed-jobs=")) {
2368 uint32_t n;
2369
2370 if (safe_atou32(l+14, &n) < 0)
e5035a27 2371 log_debug("Failed to parse failed jobs counter %s", l+14);
33c5fae9
LP		 2372 else
2373 m->n_failed_jobs += n;
718db961 2374
01d67b43
LP		 2375 } else if (startswith(l, "taint-usr=")) {
2376 int b;
2377
e3dd987c
LP		 2378 b = parse_boolean(l+10);
2379 if (b < 0)
e5035a27 2380 log_debug("Failed to parse taint /usr flag %s", l+10);
01d67b43
LP		 2381 else
2382 m->taint_usr = m->taint_usr || b;
718db961 2383
915b3753
LP		 2384 } else if (startswith(l, "firmware-timestamp="))
2385 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2386 else if (startswith(l, "loader-timestamp="))
2387 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2388 else if (startswith(l, "kernel-timestamp="))
2389 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2390 else if (startswith(l, "initrd-timestamp="))
e9ddabc2 2391 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
915b3753
LP		 2392 else if (startswith(l, "userspace-timestamp="))
2393 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
10717a1a 2394 else if (startswith(l, "finish-timestamp="))
799fd0fd 2395 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
718db961
LP		 2396 else if (startswith(l, "security-start-timestamp="))
2397 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2398 else if (startswith(l, "security-finish-timestamp="))
2399 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2400 else if (startswith(l, "generators-start-timestamp="))
2401 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2402 else if (startswith(l, "generators-finish-timestamp="))
2403 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2404 else if (startswith(l, "units-load-start-timestamp="))
2405 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2406 else if (startswith(l, "units-load-finish-timestamp="))
2407 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
4a9fd066
OS		 2408 else if (startswith(l, "env=")) {
2409 _cleanup_free_ char *uce = NULL;
2410 char **e;
2411
527b7a42
LP		 2412 r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
2413 if (r < 0)
4a9fd066 2414 goto finish;
4a9fd066
OS		 2415
2416 e = strv_env_set(m->environment, uce);
2417 if (!e) {
2418 r = -ENOMEM;
2419 goto finish;
2420 }
2421
2422 strv_free(m->environment);
2423 m->environment = e;
e3dd987c 2424
d86f9d52
LP		 2425 } else if (startswith(l, "notify-fd=")) {
2426 int fd;
2427
2428 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2429 log_debug("Failed to parse notify fd: %s", l + 10);
d86f9d52 2430 else {
03e334a1
LP		 2431 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2432 safe_close(m->notify_fd);
d86f9d52
LP		 2433 m->notify_fd = fdset_remove(fds, fd);
2434 }
2435
2436 } else if (startswith(l, "notify-socket=")) {
2437 char *n;
2438
2439 n = strdup(l+14);
2440 if (!n) {
2441 r = -ENOMEM;
2442 goto finish;
2443 }
2444
2445 free(m->notify_socket);
2446 m->notify_socket = n;
2447
e3dd987c
LP		 2448 } else if (startswith(l, "kdbus-fd=")) {
2449 int fd;
2450
8bf9fcf4 2451 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2452 log_debug("Failed to parse kdbus fd: %s", l + 9);
e3dd987c 2453 else {
03e334a1 2454 safe_close(m->kdbus_fd);
e3dd987c
LP		 2455 m->kdbus_fd = fdset_remove(fds, fd);
2456 }
2457
230314d7
LP		 2458 } else {
2459 int k;
2460
2461 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2462 if (k < 0)
2463 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2464 else if (k == 0)
2465 log_debug("Unknown serialization item '%s'", l);
2466 }
10f8e83c
LP		 2467 }
2468
a16e1123
LP		 2469 for (;;) {
2470 Unit *u;
2471 char name[UNIT_NAME_MAX+2];
2472
2473 /* Start marker */
2474 if (!fgets(name, sizeof(name), f)) {
2475 if (feof(f))
10f8e83c
LP		 2476 r = 0;
2477 else
2478 r = -errno;
a16e1123 2479
82c64bf5 2480 goto finish;
a16e1123
LP		 2481 }
2482
2483 char_array_0(name);
2484
bd0af849
ZJS		 2485 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2486 if (r < 0)
82c64bf5 2487 goto finish;
a16e1123 2488
01e10de3
LP		 2489 r = unit_deserialize(u, f, fds);
2490 if (r < 0)
82c64bf5 2491 goto finish;
a16e1123
LP		 2492 }
2493
10f8e83c 2494finish:
145b1f79 2495 if (ferror(f))
82c64bf5 2496 r = -EIO;
a16e1123 2497
a7556052 2498 assert(m->n_reloading > 0);
313cefa1 2499 m->n_reloading--;
82c64bf5
LP		 2500
2501 return r;
a16e1123
LP		 2502}
2503
2504int manager_reload(Manager *m) {
2505 int r, q;
51d122af
ZJS		 2506 _cleanup_fclose_ FILE *f = NULL;
2507 _cleanup_fdset_free_ FDSet *fds = NULL;
a16e1123
LP		 2508
2509 assert(m);
2510
07719a21
LP		 2511 r = manager_open_serialization(m, &f);
2512 if (r < 0)
a16e1123
LP		 2513 return r;
2514
313cefa1 2515 m->n_reloading++;
718db961 2516 bus_manager_send_reloading(m, true);
38c52d46 2517
07719a21
LP		 2518 fds = fdset_new();
2519 if (!fds) {
313cefa1 2520 m->n_reloading--;
51d122af 2521 return -ENOMEM;
a16e1123
LP		 2522 }
2523
b3680f49 2524 r = manager_serialize(m, f, fds, false);
07719a21 2525 if (r < 0) {
313cefa1 2526 m->n_reloading--;
51d122af 2527 return r;
38c52d46 2528 }
a16e1123
LP		 2529
2530 if (fseeko(f, 0, SEEK_SET) < 0) {
313cefa1 2531 m->n_reloading--;
51d122af 2532 return -errno;
a16e1123
LP		 2533 }
2534
2535 /* From here on there is no way back. */
2536 manager_clear_jobs_and_units(m);
5a1e9937 2537 manager_undo_generators(m);
84e3543e 2538 lookup_paths_free(&m->lookup_paths);
2ded0c04 2539
a3c4eb07 2540 q = lookup_paths_init(&m->lookup_paths, m->running_as, true, NULL);
e801700e
ZJS		 2541 if (q < 0 && r >= 0)
2542 r = q;
5a1e9937 2543
a3c4eb07
LP		 2544 /* Find new unit paths */
2545 q = manager_run_generators(m);
e801700e 2546 if (q < 0 && r >= 0)
07719a21
LP		 2547 r = q;
2548
5a1e9937
LP		 2549 manager_build_unit_path_cache(m);
2550
a16e1123 2551 /* First, enumerate what we can from all config files */
ba64af90 2552 manager_enumerate(m);
a16e1123
LP		 2553
2554 /* Second, deserialize our stored data */
07719a21 2555 q = manager_deserialize(m, f, fds);
e801700e 2556 if (q < 0 && r >= 0)
a16e1123
LP		 2557 r = q;
2558
2559 fclose(f);
2560 f = NULL;
2561
a2cc4a6c
ZJS		 2562 /* Re-register notify_fd as event source */
2563 q = manager_setup_notify(m);
e801700e 2564 if (q < 0 && r >= 0)
a2cc4a6c
ZJS		 2565 r = q;
2566
a16e1123 2567 /* Third, fire things up! */
007c6337 2568 manager_coldplug(m);
a16e1123 2569
8936a5e3
DM		 2570 /* Sync current state of bus names with our set of listening units */
2571 if (m->api_bus)
2572 manager_sync_bus_names(m, m->api_bus);
2573
a7556052
LP		 2574 assert(m->n_reloading > 0);
2575 m->n_reloading--;
9f611ad8 2576
71445ae7
LP		 2577 m->send_reloading_done = true;
2578
a16e1123
LP		 2579 return r;
2580}
2581
c17ec25e
MS		 2582bool manager_is_reloading_or_reexecuting(Manager *m) {
2583 assert(m);
2584
2585 return m->n_reloading != 0;
2586}
2587
fdf20a31 2588void manager_reset_failed(Manager *m) {
5632e374
LP		 2589 Unit *u;
2590 Iterator i;
2591
2592 assert(m);
2593
2594 HASHMAP_FOREACH(u, m->units, i)
fdf20a31 2595 unit_reset_failed(u);
5632e374
LP		 2596}
2597
31afa0a4 2598bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
8f6df3fa
LP		 2599 Unit *u;
2600
2601 assert(m);
2602 assert(name);
2603
2604 /* Returns true if the unit is inactive or going down */
bd0af849
ZJS		 2605 u = manager_get_unit(m, name);
2606 if (!u)
8f6df3fa
LP		 2607 return true;
2608
31afa0a4 2609 return unit_inactive_or_pending(u);
8f6df3fa
LP		 2610}
2611
56dacdbc 2612static void manager_notify_finished(Manager *m) {
7ceba241 2613 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
915b3753 2614 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
b0c918b9 2615
56dacdbc 2616 if (m->test_run)
b0c918b9
LP		 2617 return;
2618
75f86906 2619 if (m->running_as == MANAGER_SYSTEM && detect_container() <= 0) {
e03ae661 2620
915b3753
LP		 2621 /* Note that m->kernel_usec.monotonic is always at 0,
2622 * and m->firmware_usec.monotonic and
2623 * m->loader_usec.monotonic should be considered
2624 * negative values. */
2625
7ceba241
LP		 2626 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2627 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
915b3753 2628 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
7ceba241 2629 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
18fa6b27 2630
e9ddabc2 2631 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
18fa6b27 2632
915b3753
LP		 2633 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2634 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
18fa6b27 2635
e12919e8 2636 log_struct(LOG_INFO,
e2cc6eca 2637 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8
LP		 2638 "KERNEL_USEC="USEC_FMT, kernel_usec,
2639 "INITRD_USEC="USEC_FMT, initrd_usec,
2640 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2641 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2642 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2643 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2644 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2645 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2646 NULL);
18fa6b27 2647 } else {
915b3753 2648 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
18fa6b27
LP		 2649 initrd_usec = 0;
2650
81270860 2651 log_struct(LOG_INFO,
e2cc6eca 2652 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2653 "KERNEL_USEC="USEC_FMT, kernel_usec,
ccd06097 2654 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2655 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2656 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2657 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2658 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
81270860 2659 NULL);
e12919e8
LP		 2660 }
2661 } else {
2662 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2663 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2664
2665 log_struct(LOG_INFO,
e2cc6eca 2666 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2667 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2668 LOG_MESSAGE("Startup finished in %s.",
2669 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2670 NULL);
18fa6b27 2671 }
b0c918b9 2672
718db961 2673 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
530345e7
LP		 2674
2675 sd_notifyf(false,
af4ec430
LP		 2676 "READY=1\n"
2677 "STATUS=Startup finished in %s.",
2fa4092c 2678 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
b0c918b9
LP		 2679}
2680
56dacdbc 2681void manager_check_finished(Manager *m) {
56dacdbc
ZJS		 2682 assert(m);
2683
aad1976f
LP		 2684 if (m->n_reloading > 0)
2685 return;
2686
9771b62d
LP		 2687 /* Verify that we are actually running currently. Initially
2688 * the exit code is set to invalid, and during operation it is
2689 * then set to MANAGER_OK */
2690 if (m->exit_code != MANAGER_OK)
2691 return;
2692
56dacdbc 2693 if (hashmap_size(m->jobs) > 0) {
56dacdbc 2694 if (m->jobs_in_progress_event_source)
2ae56591 2695 /* Ignore any failure, this is only for feedback */
e7ab4d1a 2696 (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
56dacdbc
ZJS		 2697
2698 return;
2699 }
2700
2701 manager_flip_auto_status(m, false);
2702
2703 /* Notify Type=idle units that we are done now */
56dacdbc
ZJS		 2704 manager_close_idle_pipe(m);
2705
2706 /* Turn off confirm spawn now */
2707 m->confirm_spawn = false;
2708
2709 /* No need to update ask password status when we're going non-interactive */
2710 manager_close_ask_password(m);
2711
2712 /* This is no longer the first boot */
2713 manager_set_first_boot(m, false);
2714
2715 if (dual_timestamp_is_set(&m->finish_timestamp))
2716 return;
2717
2718 dual_timestamp_get(&m->finish_timestamp);
2719
2720 manager_notify_finished(m);
2721
e7ab4d1a 2722 manager_invalidate_startup_units(m);
56dacdbc
ZJS		 2723}
2724
e801700e 2725static int manager_run_generators(Manager *m) {
f42348ac 2726 _cleanup_strv_free_ char **paths = NULL;
07719a21 2727 const char *argv[5];
e801700e 2728 char **path;
07719a21 2729 int r;
5a1e9937
LP		 2730
2731 assert(m);
2732
0d8c31ff 2733 if (m->test_run)
e801700e 2734 return 0;
0d8c31ff 2735
e801700e
ZJS		 2736 paths = generator_paths(m->running_as);
2737 if (!paths)
2738 return log_oom();
5a1e9937 2739
49681057
ZJS		 2740 /* Optimize by skipping the whole process by not creating output directories
2741 * if no generators are found. */
e801700e 2742 STRV_FOREACH(path, paths) {
a3c4eb07 2743 if (access(*path, F_OK) >= 0)
e801700e 2744 goto found;
49681057 2745 if (errno != ENOENT)
e801700e 2746 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
5a1e9937 2747 }
a3c4eb07 2748
e801700e 2749 return 0;
5a1e9937 2750
e801700e 2751 found:
a3c4eb07 2752 r = mkdir_p_label(m->lookup_paths.generator, 0755);
07719a21
LP		 2753 if (r < 0)
2754 goto finish;
f1d19aa4 2755
a3c4eb07 2756 r = mkdir_p_label(m->lookup_paths.generator_early, 0755);
07719a21
LP		 2757 if (r < 0)
2758 goto finish;
5a1e9937 2759
a3c4eb07 2760 r = mkdir_p_label(m->lookup_paths.generator_late, 0755);
07719a21
LP		 2761 if (r < 0)
2762 goto finish;
5a1e9937 2763
83cc030f 2764 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
a3c4eb07
LP		 2765 argv[1] = m->lookup_paths.generator;
2766 argv[2] = m->lookup_paths.generator_early;
2767 argv[3] = m->lookup_paths.generator_late;
07719a21 2768 argv[4] = NULL;
5a1e9937 2769
718db961 2770 RUN_WITH_UMASK(0022)
e801700e 2771 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
5a1e9937 2772
718db961 2773finish:
a3c4eb07
LP		 2774 /* Trim empty dirs */
2775 (void) rmdir(m->lookup_paths.generator);
2776 (void) rmdir(m->lookup_paths.generator_early);
2777 (void) rmdir(m->lookup_paths.generator_late);
e801700e 2778 return r;
5a1e9937
LP		 2779}
2780
e801700e 2781static void manager_undo_generators(Manager *m) {
07719a21
LP		 2782 assert(m);
2783
a3c4eb07
LP		 2784 if (m->lookup_paths.generator)
2785 (void) rm_rf(m->lookup_paths.generator, REMOVE_ROOT);
2786 if (m->lookup_paths.generator_early)
2787 (void) rm_rf(m->lookup_paths.generator_early, REMOVE_ROOT);
2788 if (m->lookup_paths.generator_late)
2789 (void) rm_rf(m->lookup_paths.generator_late, REMOVE_ROOT);
5a1e9937
LP		 2790}
2791
718db961
LP		 2792int manager_environment_add(Manager *m, char **minus, char **plus) {
2793 char **a = NULL, **b = NULL, **l;
97d0e5f8 2794 assert(m);
bcd8e6d1 2795
718db961 2796 l = m->environment;
bcd8e6d1 2797
718db961
LP		 2798 if (!strv_isempty(minus)) {
2799 a = strv_env_delete(l, 1, minus);
2800 if (!a)
2801 return -ENOMEM;
2802
2803 l = a;
2804 }
2805
2806 if (!strv_isempty(plus)) {
2807 b = strv_env_merge(2, l, plus);
aa9f8a30
AH		 2808 if (!b) {
2809 strv_free(a);
718db961 2810 return -ENOMEM;
aa9f8a30 2811 }
bcd8e6d1 2812
718db961
LP		 2813 l = b;
2814 }
2815
2816 if (m->environment != l)
2817 strv_free(m->environment);
2818 if (a != l)
2819 strv_free(a);
2820 if (b != l)
2821 strv_free(b);
2822
f069efb4
LP		 2823 m->environment = l;
2824 manager_clean_environment(m);
2825 strv_sort(m->environment);
2826
97d0e5f8
UTL		 2827 return 0;
2828}
2829
c93ff2e9
FC		 2830int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2831 int i;
2832
2833 assert(m);
2834
517d56b1 2835 for (i = 0; i < _RLIMIT_MAX; i++) {
d9814c76
EV		 2836 m->rlimit[i] = mfree(m->rlimit[i]);
2837
07719a21
LP		 2838 if (!default_rlimit[i])
2839 continue;
c93ff2e9 2840
07719a21
LP		 2841 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2842 if (!m->rlimit[i])
2843 return -ENOMEM;
c93ff2e9
FC		 2844 }
2845
2846 return 0;
2847}
2848
4cfa2c99 2849void manager_recheck_journal(Manager *m) {
f1dd0c3f
LP		 2850 Unit *u;
2851
2852 assert(m);
2853
b2c23da8 2854 if (m->running_as != MANAGER_SYSTEM)
f1dd0c3f
LP		 2855 return;
2856
731a676c
LP		 2857 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2858 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
4cfa2c99 2859 log_close_journal();
731a676c 2860 return;
f1dd0c3f
LP		 2861 }
2862
731a676c
LP		 2863 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2864 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
4cfa2c99 2865 log_close_journal();
731a676c
LP		 2866 return;
2867 }
f1dd0c3f 2868
731a676c
LP		 2869 /* Hmm, OK, so the socket is fully up and the service is up
2870 * too, then let's make use of the thing. */
f1dd0c3f
LP		 2871 log_open();
2872}
2873
d450b6f2 2874void manager_set_show_status(Manager *m, ShowStatus mode) {
27d340c7 2875 assert(m);
d450b6f2 2876 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
27d340c7 2877
b2c23da8 2878 if (m->running_as != MANAGER_SYSTEM)
27d340c7
LP		 2879 return;
2880
76b6f3f6
ZJS		 2881 if (m->show_status != mode)
2882 log_debug("%s showing of status.",
2883 mode == SHOW_STATUS_NO ? "Disabling" : "Enabling");
d450b6f2 2884 m->show_status = mode;
27d340c7 2885
d450b6f2 2886 if (mode > 0)
ac5b0c13 2887 (void) touch("/run/systemd/show-status");
27d340c7 2888 else
ac5b0c13 2889 (void) unlink("/run/systemd/show-status");
27d340c7
LP		 2890}
2891
127d5fd1 2892static bool manager_get_show_status(Manager *m, StatusType type) {
27d340c7
LP		 2893 assert(m);
2894
b2c23da8 2895 if (m->running_as != MANAGER_SYSTEM)
27d340c7
LP		 2896 return false;
2897
31a7eb86
ZJS		 2898 if (m->no_console_output)
2899 return false;
2900
d81afec1 2901 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
08510627
LP		 2902 return false;
2903
e46b13c8 2904 /* If we cannot find out the status properly, just proceed. */
ebc5788e 2905 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
e46b13c8
ZJS		 2906 return false;
2907
d450b6f2 2908 if (m->show_status > 0)
27d340c7
LP		 2909 return true;
2910
031886ed 2911 return false;
27d340c7 2912}
68b29a9f 2913
e2680723
LP		 2914void manager_set_first_boot(Manager *m, bool b) {
2915 assert(m);
2916
b2c23da8 2917 if (m->running_as != MANAGER_SYSTEM)
e2680723
LP		 2918 return;
2919
ae2a2c53
LP		 2920 if (m->first_boot != (int) b) {
2921 if (b)
2922 (void) touch("/run/systemd/first-boot");
2923 else
2924 (void) unlink("/run/systemd/first-boot");
2925 }
e2680723 2926
ae2a2c53 2927 m->first_boot = b;
e2680723
LP		 2928}
2929
127d5fd1 2930void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
25cee550
MS		 2931 va_list ap;
2932
cb6531be
ZJS		 2933 /* If m is NULL, assume we're after shutdown and let the messages through. */
2934
2935 if (m && !manager_get_show_status(m, type))
25cee550
MS		 2936 return;
2937
03b717a3
MS		 2938 /* XXX We should totally drop the check for ephemeral here
2939 * and thus effectively make 'Type=idle' pointless. */
cb6531be 2940 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
03b717a3
MS		 2941 return;
2942
25cee550 2943 va_start(ap, format);
127d5fd1 2944 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
25cee550
MS		 2945 va_end(ap);
2946}
2947
a57f7e2c
LP		 2948Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
2949 char p[strlen(path)+1];
2950
2951 assert(m);
2952 assert(path);
2953
2954 strcpy(p, path);
2955 path_kill_slashes(p);
2956
2957 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
2958}
e66cf1a3
LP		 2959
2960const char *manager_get_runtime_prefix(Manager *m) {
f755e3b7 2961 assert(m);
e66cf1a3 2962
b2c23da8 2963 return m->running_as == MANAGER_SYSTEM ?
e66cf1a3
LP		 2964 "/run" :
2965 getenv("XDG_RUNTIME_DIR");
2966}
f755e3b7 2967
5269eb6b 2968int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
03455c28 2969 unsigned size;
5269eb6b 2970 int r;
03455c28
LDM		 2971
2972 assert(m);
2973 assert(u->manager == m);
2974
2975 size = set_size(m->failed_units);
2976
9fff8981 2977 if (failed) {
5269eb6b
LP		 2978 r = set_ensure_allocated(&m->failed_units, NULL);
2979 if (r < 0)
2980 return log_oom();
2981
9fff8981 2982 if (set_put(m->failed_units, u) < 0)
5269eb6b 2983 return log_oom();
9fff8981 2984 } else
5269eb6b 2985 (void) set_remove(m->failed_units, u);
03455c28
LDM		 2986
2987 if (set_size(m->failed_units) != size)
2988 bus_manager_send_change_signal(m);
5269eb6b
LP		 2989
2990 return 0;
03455c28
LDM		 2991}
2992
f755e3b7
LP		 2993ManagerState manager_state(Manager *m) {
2994 Unit *u;
2995
2996 assert(m);
2997
2998 /* Did we ever finish booting? If not then we are still starting up */
d81afec1
LP		 2999 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3000
3001 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3002 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3003 return MANAGER_INITIALIZING;
3004
f755e3b7 3005 return MANAGER_STARTING;
d81afec1 3006 }
f755e3b7
LP		 3007
3008 /* Is the special shutdown target queued? If so, we are in shutdown state */
3009 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
f0469b8c 3010 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))
f755e3b7
LP		 3011 return MANAGER_STOPPING;
3012
3013 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3014 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3015 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
f0469b8c 3016 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
f755e3b7
LP		 3017 return MANAGER_MAINTENANCE;
3018
3019 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3020 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
f0469b8c 3021 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
f755e3b7
LP		 3022 return MANAGER_MAINTENANCE;
3023
3024 /* Are there any failed units? If so, we are in degraded mode */
3025 if (set_size(m->failed_units) > 0)
3026 return MANAGER_DEGRADED;
3027
3028 return MANAGER_RUNNING;
3029}
3030
3031static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
d81afec1 3032 [MANAGER_INITIALIZING] = "initializing",
f755e3b7
LP		 3033 [MANAGER_STARTING] = "starting",
3034 [MANAGER_RUNNING] = "running",
3035 [MANAGER_DEGRADED] = "degraded",
3036 [MANAGER_MAINTENANCE] = "maintenance",
3037 [MANAGER_STOPPING] = "stopping",
3038};
3039
3040DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
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