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[systemd.git] / src / core / manager.c
CommitLineData
663996b3
MS		 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
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
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
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
6300502b 20#include <dirent.h>
663996b3 21#include <errno.h>
6300502b
MP		 22#include <fcntl.h>
23#include <linux/kd.h>
663996b3 24#include <signal.h>
6300502b 25#include <string.h>
5eef597e 26#include <sys/epoll.h>
6300502b 27#include <sys/inotify.h>
663996b3 28#include <sys/ioctl.h>
6300502b 29#include <sys/reboot.h>
663996b3 30#include <sys/timerfd.h>
6300502b
MP		 31#include <sys/wait.h>
32#include <unistd.h>
663996b3
MS		 33
34#ifdef HAVE_AUDIT
35#include <libaudit.h>
36#endif
37
60f067b4 38#include "sd-daemon.h"
60f067b4 39#include "sd-messages.h"
663996b3 40
db2df898 41#include "alloc-util.h"
6300502b
MP		 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"
aa27b158 52#include "dirent-util.h"
6300502b 53#include "env-util.h"
db2df898 54#include "escape.h"
6300502b 55#include "exit-status.h"
db2df898
MP		 56#include "fd-util.h"
57#include "fileio.h"
58#include "fs-util.h"
663996b3 59#include "hashmap.h"
db2df898 60#include "io-util.h"
6300502b 61#include "locale-setup.h"
663996b3 62#include "log.h"
6300502b 63#include "macro.h"
db2df898 64#include "manager.h"
6300502b 65#include "missing.h"
663996b3 66#include "mkdir.h"
db2df898 67#include "parse-util.h"
6300502b
MP		 68#include "path-lookup.h"
69#include "path-util.h"
70#include "process-util.h"
663996b3 71#include "ratelimit.h"
e3bff60a 72#include "rm-rf.h"
6300502b 73#include "signal-util.h"
663996b3 74#include "special.h"
db2df898
MP		 75#include "stat-util.h"
76#include "string-table.h"
77#include "string-util.h"
6300502b
MP		 78#include "strv.h"
79#include "terminal-util.h"
80#include "time-util.h"
81#include "transaction.h"
db2df898 82#include "umask-util.h"
6300502b
MP		 83#include "unit-name.h"
84#include "util.h"
663996b3
MS		 85#include "virt.h"
86#include "watchdog.h"
db2df898
MP		 87
88#define NOTIFY_RCVBUF_SIZE (8*1024*1024)
aa27b158 89#define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
663996b3 90
663996b3 91/* Initial delay and the interval for printing status messages about running jobs */
60f067b4
JS		 92#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
93#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
663996b3
MS		 94#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
95
60f067b4 96static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
aa27b158 97static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
60f067b4
JS		 98static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
99static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
100static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
101static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
102static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
e735f4d4 103static int manager_run_generators(Manager *m);
663996b3 104
e3bff60a 105static void manager_watch_jobs_in_progress(Manager *m) {
60f067b4 106 usec_t next;
e3bff60a 107 int r;
663996b3 108
60f067b4 109 assert(m);
663996b3 110
60f067b4 111 if (m->jobs_in_progress_event_source)
e3bff60a 112 return;
663996b3 113
60f067b4 114 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
e3bff60a 115 r = sd_event_add_time(
60f067b4
JS		 116 m->event,
117 &m->jobs_in_progress_event_source,
118 CLOCK_MONOTONIC,
119 next, 0,
120 manager_dispatch_jobs_in_progress, m);
e3bff60a
MP		 121 if (r < 0)
122 return;
123
124 (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress");
663996b3
MS		 125}
126
6300502b 127#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
663996b3 128
663996b3
MS		 129static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
130 char *p = buffer;
131
132 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
133 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
134
135 if (pos > 1) {
136 if (pos > 2)
137 p = mempset(p, ' ', pos-2);
5a920b42
MP		 138 if (log_get_show_color())
139 p = stpcpy(p, ANSI_RED);
663996b3
MS		 140 *p++ = '*';
141 }
142
143 if (pos > 0 && pos <= width) {
5a920b42
MP		 144 if (log_get_show_color())
145 p = stpcpy(p, ANSI_HIGHLIGHT_RED);
663996b3
MS		 146 *p++ = '*';
147 }
148
5a920b42
MP		 149 if (log_get_show_color())
150 p = stpcpy(p, ANSI_NORMAL);
663996b3
MS		 151
152 if (pos < width) {
5a920b42
MP		 153 if (log_get_show_color())
154 p = stpcpy(p, ANSI_RED);
663996b3
MS		 155 *p++ = '*';
156 if (pos < width-1)
157 p = mempset(p, ' ', width-1-pos);
5a920b42
MP		 158 if (log_get_show_color())
159 strcpy(p, ANSI_NORMAL);
60f067b4
JS		 160 }
161}
162
163void manager_flip_auto_status(Manager *m, bool enable) {
164 assert(m);
165
166 if (enable) {
167 if (m->show_status == SHOW_STATUS_AUTO)
168 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
169 } else {
170 if (m->show_status == SHOW_STATUS_TEMPORARY)
171 manager_set_show_status(m, SHOW_STATUS_AUTO);
663996b3
MS		 172 }
173}
174
175static void manager_print_jobs_in_progress(Manager *m) {
60f067b4 176 _cleanup_free_ char *job_of_n = NULL;
663996b3
MS		 177 Iterator i;
178 Job *j;
663996b3
MS		 179 unsigned counter = 0, print_nr;
180 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
181 unsigned cylon_pos;
60f067b4
JS		 182 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
183 uint64_t x;
184
185 assert(m);
e735f4d4 186 assert(m->n_running_jobs > 0);
60f067b4
JS		 187
188 manager_flip_auto_status(m, true);
663996b3
MS		 189
190 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
191
192 HASHMAP_FOREACH(j, m->jobs, i)
193 if (j->state == JOB_RUNNING && counter++ == print_nr)
194 break;
195
196 /* m->n_running_jobs must be consistent with the contents of m->jobs,
197 * so the above loop must have succeeded in finding j. */
198 assert(counter == print_nr + 1);
60f067b4 199 assert(j);
663996b3
MS		 200
201 cylon_pos = m->jobs_in_progress_iteration % 14;
202 if (cylon_pos >= 8)
203 cylon_pos = 14 - cylon_pos;
204 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
205
60f067b4
JS		 206 m->jobs_in_progress_iteration++;
207
e3bff60a
MP		 208 if (m->n_running_jobs > 1) {
209 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
210 job_of_n = NULL;
211 }
663996b3 212
60f067b4
JS		 213 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
214 if (job_get_timeout(j, &x) > 0)
215 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
216
5eef597e 217 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
60f067b4
JS		 218 "%sA %s job is running for %s (%s / %s)",
219 strempty(job_of_n),
220 job_type_to_string(j->type),
221 unit_description(j->unit),
222 time, limit);
663996b3
MS		 223}
224
5eef597e
MP		 225static int have_ask_password(void) {
226 _cleanup_closedir_ DIR *dir;
227
228 dir = opendir("/run/systemd/ask-password");
229 if (!dir) {
230 if (errno == ENOENT)
231 return false;
232 else
233 return -errno;
234 }
235
236 for (;;) {
237 struct dirent *de;
238
239 errno = 0;
240 de = readdir(dir);
4c89c718 241 if (!de && errno > 0)
5eef597e
MP		 242 return -errno;
243 if (!de)
244 return false;
245
246 if (startswith(de->d_name, "ask."))
247 return true;
248 }
249}
250
251static int manager_dispatch_ask_password_fd(sd_event_source *source,
252 int fd, uint32_t revents, void *userdata) {
253 Manager *m = userdata;
254
255 assert(m);
256
257 flush_fd(fd);
258
259 m->have_ask_password = have_ask_password();
260 if (m->have_ask_password < 0)
261 /* Log error but continue. Negative have_ask_password
262 * is treated as unknown status. */
f47781d8 263 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
5eef597e
MP		 264
265 return 0;
266}
267
268static void manager_close_ask_password(Manager *m) {
269 assert(m);
270
5eef597e 271 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
d9dfd233 272 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
5eef597e
MP		 273 m->have_ask_password = -EINVAL;
274}
275
276static int manager_check_ask_password(Manager *m) {
277 int r;
278
279 assert(m);
280
281 if (!m->ask_password_event_source) {
282 assert(m->ask_password_inotify_fd < 0);
283
284 mkdir_p_label("/run/systemd/ask-password", 0755);
285
286 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
f47781d8
MP		 287 if (m->ask_password_inotify_fd < 0)
288 return log_error_errno(errno, "inotify_init1() failed: %m");
5eef597e
MP		 289
290 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
f47781d8 291 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
5eef597e
MP		 292 manager_close_ask_password(m);
293 return -errno;
294 }
295
296 r = sd_event_add_io(m->event, &m->ask_password_event_source,
297 m->ask_password_inotify_fd, EPOLLIN,
298 manager_dispatch_ask_password_fd, m);
299 if (r < 0) {
f47781d8 300 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
5eef597e
MP		 301 manager_close_ask_password(m);
302 return -errno;
303 }
304
e3bff60a
MP		 305 (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
306
5eef597e
MP		 307 /* Queries might have been added meanwhile... */
308 manager_dispatch_ask_password_fd(m->ask_password_event_source,
309 m->ask_password_inotify_fd, EPOLLIN, m);
310 }
311
312 return m->have_ask_password;
313}
314
14228c0d 315static int manager_watch_idle_pipe(Manager *m) {
14228c0d
MB		 316 int r;
317
60f067b4
JS		 318 assert(m);
319
320 if (m->idle_pipe_event_source)
14228c0d
MB		 321 return 0;
322
323 if (m->idle_pipe[2] < 0)
324 return 0;
325
60f067b4 326 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
f47781d8
MP		 327 if (r < 0)
328 return log_error_errno(r, "Failed to watch idle pipe: %m");
14228c0d 329
e3bff60a
MP		 330 (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
331
14228c0d 332 return 0;
14228c0d
MB		 333}
334
60f067b4
JS		 335static void manager_close_idle_pipe(Manager *m) {
336 assert(m);
14228c0d 337
6300502b
MP		 338 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
339
60f067b4
JS		 340 safe_close_pair(m->idle_pipe);
341 safe_close_pair(m->idle_pipe + 2);
14228c0d
MB		 342}
343
663996b3 344static int manager_setup_time_change(Manager *m) {
60f067b4 345 int r;
663996b3
MS		 346
347 /* We only care for the cancellation event, hence we set the
348 * timeout to the latest possible value. */
349 struct itimerspec its = {
350 .it_value.tv_sec = TIME_T_MAX,
351 };
663996b3 352
60f067b4
JS		 353 assert(m);
354 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
663996b3 355
5eef597e
MP		 356 if (m->test_run)
357 return 0;
358
663996b3
MS		 359 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
360 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
361
60f067b4 362 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
f47781d8
MP		 363 if (m->time_change_fd < 0)
364 return log_error_errno(errno, "Failed to create timerfd: %m");
663996b3 365
60f067b4 366 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
f47781d8 367 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
60f067b4 368 m->time_change_fd = safe_close(m->time_change_fd);
663996b3
MS		 369 return 0;
370 }
371
60f067b4 372 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
f47781d8
MP		 373 if (r < 0)
374 return log_error_errno(r, "Failed to create time change event source: %m");
663996b3 375
e3bff60a
MP		 376 (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
377
663996b3
MS		 378 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
379
380 return 0;
381}
382
383static int enable_special_signals(Manager *m) {
60f067b4 384 _cleanup_close_ int fd = -1;
663996b3
MS		 385
386 assert(m);
387
4c89c718
MP		 388 if (m->test_run)
389 return 0;
390
663996b3
MS		 391 /* Enable that we get SIGINT on control-alt-del. In containers
392 * this will fail with EPERM (older) or EINVAL (newer), so
393 * ignore that. */
394 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
f47781d8 395 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
663996b3
MS		 396
397 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
398 if (fd < 0) {
399 /* Support systems without virtual console */
400 if (fd != -ENOENT)
f47781d8 401 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
663996b3
MS		 402 } else {
403 /* Enable that we get SIGWINCH on kbrequest */
404 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
f47781d8 405 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
663996b3
MS		 406 }
407
408 return 0;
409}
410
411static int manager_setup_signals(Manager *m) {
663996b3
MS		 412 struct sigaction sa = {
413 .sa_handler = SIG_DFL,
414 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
415 };
60f067b4
JS		 416 sigset_t mask;
417 int r;
663996b3
MS		 418
419 assert(m);
420
663996b3
MS		 421 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
422
5eef597e
MP		 423 /* We make liberal use of realtime signals here. On
424 * Linux/glibc we have 30 of them (with the exception of Linux
425 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
426 * (aka SIGRTMAX). */
663996b3 427
5eef597e 428 assert_se(sigemptyset(&mask) == 0);
663996b3
MS		 429 sigset_add_many(&mask,
430 SIGCHLD, /* Child died */
431 SIGTERM, /* Reexecute daemon */
432 SIGHUP, /* Reload configuration */
433 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
434 SIGUSR2, /* systemd: dump status */
435 SIGINT, /* Kernel sends us this on control-alt-del */
436 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
437 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
5eef597e 438
663996b3
MS		 439 SIGRTMIN+0, /* systemd: start default.target */
440 SIGRTMIN+1, /* systemd: isolate rescue.target */
441 SIGRTMIN+2, /* systemd: isolate emergency.target */
442 SIGRTMIN+3, /* systemd: start halt.target */
443 SIGRTMIN+4, /* systemd: start poweroff.target */
444 SIGRTMIN+5, /* systemd: start reboot.target */
445 SIGRTMIN+6, /* systemd: start kexec.target */
5eef597e
MP		 446
447 /* ... space for more special targets ... */
448
663996b3
MS		 449 SIGRTMIN+13, /* systemd: Immediate halt */
450 SIGRTMIN+14, /* systemd: Immediate poweroff */
451 SIGRTMIN+15, /* systemd: Immediate reboot */
452 SIGRTMIN+16, /* systemd: Immediate kexec */
5eef597e
MP		 453
454 /* ... space for more immediate system state changes ... */
455
663996b3
MS		 456 SIGRTMIN+20, /* systemd: enable status messages */
457 SIGRTMIN+21, /* systemd: disable status messages */
458 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
459 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
460 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
5eef597e
MP		 461
462 /* .. one free signal here ... */
463
464#if !defined(__hppa64__) && !defined(__hppa__)
465 /* Apparently Linux on hppa has fewer RT
466 * signals (SIGRTMAX is SIGRTMIN+25 there),
467 * hence let's not try to make use of them
468 * here. Since these commands are accessible
469 * by different means and only really a safety
470 * net, the missing functionality on hppa
471 * shouldn't matter. */
472
663996b3
MS		 473 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
474 SIGRTMIN+27, /* systemd: set log target to console */
475 SIGRTMIN+28, /* systemd: set log target to kmsg */
e735f4d4 476 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
5eef597e
MP		 477
478 /* ... one free signal here SIGRTMIN+30 ... */
479#endif
663996b3
MS		 480 -1);
481 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
482
60f067b4
JS		 483 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
484 if (m->signal_fd < 0)
663996b3
MS		 485 return -errno;
486
60f067b4
JS		 487 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
488 if (r < 0)
489 return r;
490
e3bff60a
MP		 491 (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
492
aa27b158
MP		 493 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
494 * notify processing can still figure out to which process/service a message belongs, before we reap the
495 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
496 * status information before detecting that there's no process in a cgroup. */
497 r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6);
60f067b4
JS		 498 if (r < 0)
499 return r;
663996b3 500
aa27b158 501 if (MANAGER_IS_SYSTEM(m))
663996b3
MS		 502 return enable_special_signals(m);
503
504 return 0;
505}
506
60f067b4
JS		 507static void manager_clean_environment(Manager *m) {
508 assert(m);
509
510 /* Let's remove some environment variables that we
511 * need ourselves to communicate with our clients */
512 strv_env_unset_many(
513 m->environment,
514 "NOTIFY_SOCKET",
515 "MAINPID",
516 "MANAGERPID",
517 "LISTEN_PID",
518 "LISTEN_FDS",
6300502b 519 "LISTEN_FDNAMES",
60f067b4
JS		 520 "WATCHDOG_PID",
521 "WATCHDOG_USEC",
522 NULL);
523}
524
14228c0d 525static int manager_default_environment(Manager *m) {
663996b3
MS		 526 assert(m);
527
aa27b158 528 if (MANAGER_IS_SYSTEM(m)) {
14228c0d
MB		 529 /* The system manager always starts with a clean
530 * environment for its children. It does not import
531 * the kernel or the parents exported variables.
532 *
533 * The initial passed environ is untouched to keep
534 * /proc/self/environ valid; it is used for tagging
535 * the init process inside containers. */
536 m->environment = strv_new("PATH=" DEFAULT_PATH,
537 NULL);
538
539 /* Import locale variables LC_*= from configuration */
540 locale_setup(&m->environment);
60f067b4 541 } else {
14228c0d
MB		 542 /* The user manager passes its own environment
543 * along to its children. */
544 m->environment = strv_copy(environ);
60f067b4 545 }
663996b3 546
14228c0d
MB		 547 if (!m->environment)
548 return -ENOMEM;
663996b3 549
60f067b4
JS		 550 manager_clean_environment(m);
551 strv_sort(m->environment);
552
14228c0d 553 return 0;
663996b3
MS		 554}
555
e3bff60a 556
aa27b158 557int manager_new(UnitFileScope scope, bool test_run, Manager **_m) {
663996b3 558 Manager *m;
60f067b4 559 int r;
663996b3
MS		 560
561 assert(_m);
aa27b158 562 assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER));
663996b3
MS		 563
564 m = new0(Manager, 1);
565 if (!m)
566 return -ENOMEM;
567
aa27b158 568 m->unit_file_scope = scope;
663996b3 569 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
60f067b4 570 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
db2df898 571 m->default_tasks_accounting = true;
5a920b42 572 m->default_tasks_max = UINT64_MAX;
663996b3 573
aa27b158
MP		 574#ifdef ENABLE_EFI
575 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
576 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
577#endif
578
e3bff60a 579 /* Prepare log fields we can use for structured logging */
aa27b158
MP		 580 if (MANAGER_IS_SYSTEM(m)) {
581 m->unit_log_field = "UNIT=";
582 m->unit_log_format_string = "UNIT=%s";
583 } else {
584 m->unit_log_field = "USER_UNIT=";
585 m->unit_log_format_string = "USER_UNIT=%s";
586 }
e3bff60a 587
60f067b4 588 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
663996b3 589
aa27b158
MP		 590 m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd =
591 m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd =
592 m->ask_password_inotify_fd = -1;
6300502b 593
663996b3
MS		 594 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
595
5eef597e 596 m->have_ask_password = -EINVAL; /* we don't know */
d9dfd233 597 m->first_boot = -1;
5eef597e
MP		 598
599 m->test_run = test_run;
600
e735f4d4
MP		 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
14228c0d
MB		 604 r = manager_default_environment(m);
605 if (r < 0)
663996b3
MS		 606 goto fail;
607
5eef597e 608 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
60f067b4 609 if (r < 0)
663996b3
MS		 610 goto fail;
611
5eef597e 612 r = hashmap_ensure_allocated(&m->jobs, NULL);
60f067b4 613 if (r < 0)
663996b3
MS		 614 goto fail;
615
5eef597e 616 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
60f067b4 617 if (r < 0)
663996b3
MS		 618 goto fail;
619
5eef597e 620 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
60f067b4 621 if (r < 0)
663996b3
MS		 622 goto fail;
623
60f067b4 624 r = sd_event_default(&m->event);
663996b3
MS		 625 if (r < 0)
626 goto fail;
627
60f067b4 628 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
663996b3
MS		 629 if (r < 0)
630 goto fail;
631
60f067b4
JS		 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
e3bff60a
MP		 640 (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
641
60f067b4
JS		 642 r = manager_setup_signals(m);
643 if (r < 0)
644 goto fail;
645
646 r = manager_setup_cgroup(m);
663996b3
MS		 647 if (r < 0)
648 goto fail;
649
650 r = manager_setup_time_change(m);
651 if (r < 0)
652 goto fail;
653
60f067b4
JS		 654 m->udev = udev_new();
655 if (!m->udev) {
656 r = -ENOMEM;
657 goto fail;
658 }
659
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. */
663996b3
MS		 663
664 m->taint_usr = dir_is_empty("/usr") > 0;
665
666 *_m = m;
667 return 0;
668
669fail:
670 manager_free(m);
671 return r;
672}
673
60f067b4
JS		 674static int manager_setup_notify(Manager *m) {
675 int r;
676
5eef597e
MP		 677 if (m->test_run)
678 return 0;
679
60f067b4
JS		 680 if (m->notify_fd < 0) {
681 _cleanup_close_ int fd = -1;
86f210e9 682 union sockaddr_union sa = {
60f067b4
JS		 683 .sa.sa_family = AF_UNIX,
684 };
5eef597e 685 static const int one = 1;
aa27b158 686 const char *e;
60f067b4
JS		 687
688 /* First free all secondary fields */
6300502b 689 m->notify_socket = mfree(m->notify_socket);
60f067b4
JS		 690 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
691
692 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
f47781d8
MP		 693 if (fd < 0)
694 return log_error_errno(errno, "Failed to allocate notification socket: %m");
60f067b4 695
db2df898
MP		 696 fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE);
697
aa27b158
MP		 698 e = manager_get_runtime_prefix(m);
699 if (!e) {
700 log_error("Failed to determine runtime prefix.");
701 return -EINVAL;
60f067b4 702 }
aa27b158
MP		 703
704 m->notify_socket = strappend(e, "/systemd/notify");
60f067b4
JS		 705 if (!m->notify_socket)
706 return log_oom();
707
f47781d8
MP		 708 (void) mkdir_parents_label(m->notify_socket, 0755);
709 (void) unlink(m->notify_socket);
710
60f067b4 711 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
aa27b158 712 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
f47781d8
MP		 713 if (r < 0)
714 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
60f067b4
JS		 715
716 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
f47781d8
MP		 717 if (r < 0)
718 return log_error_errno(errno, "SO_PASSCRED failed: %m");
60f067b4
JS		 719
720 m->notify_fd = fd;
721 fd = -1;
722
723 log_debug("Using notification socket %s", m->notify_socket);
724 }
725
726 if (!m->notify_event_source) {
727 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
f47781d8
MP		 728 if (r < 0)
729 return log_error_errno(r, "Failed to allocate notify event source: %m");
60f067b4 730
aa27b158
MP		 731 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
732 * service an exit message belongs. */
db2df898 733 r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7);
f47781d8
MP		 734 if (r < 0)
735 return log_error_errno(r, "Failed to set priority of notify event source: %m");
e3bff60a
MP		 736
737 (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
60f067b4
JS		 738 }
739
740 return 0;
741}
742
aa27b158
MP		 743static int manager_setup_cgroups_agent(Manager *m) {
744
745 static const union sockaddr_union sa = {
746 .un.sun_family = AF_UNIX,
747 .un.sun_path = "/run/systemd/cgroups-agent",
748 };
749 int r;
750
751 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
752 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
753 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
754 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
755 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
756 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
757 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
758 * we thus won't lose messages.
759 *
760 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
761 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
762 * bus for these messages. */
763
764 if (m->test_run)
765 return 0;
766
767 if (!MANAGER_IS_SYSTEM(m))
768 return 0;
769
770 if (cg_unified() > 0) /* We don't need this anymore on the unified hierarchy */
771 return 0;
772
773 if (m->cgroups_agent_fd < 0) {
774 _cleanup_close_ int fd = -1;
775
776 /* First free all secondary fields */
777 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
778
779 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
780 if (fd < 0)
781 return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m");
782
783 fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE);
784
785 (void) unlink(sa.un.sun_path);
786
787 /* Only allow root to connect to this socket */
788 RUN_WITH_UMASK(0077)
789 r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un));
790 if (r < 0)
791 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
792
793 m->cgroups_agent_fd = fd;
794 fd = -1;
795 }
796
797 if (!m->cgroups_agent_event_source) {
798 r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m);
799 if (r < 0)
800 return log_error_errno(r, "Failed to allocate cgroups agent event source: %m");
801
802 /* Process cgroups notifications early, but after having processed service notification messages or
803 * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification,
804 * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of
805 * cgroup inotify for the unified cgroup stuff. */
806 r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5);
807 if (r < 0)
808 return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m");
809
810 (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent");
811 }
812
813 return 0;
814}
815
60f067b4
JS		 816static int manager_connect_bus(Manager *m, bool reexecuting) {
817 bool try_bus_connect;
818
819 assert(m);
820
5eef597e
MP		 821 if (m->test_run)
822 return 0;
823
60f067b4
JS		 824 try_bus_connect =
825 m->kdbus_fd >= 0 ||
826 reexecuting ||
aa27b158 827 (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"));
60f067b4 828
e3bff60a 829 /* Try to connect to the buses, if possible. */
60f067b4
JS		 830 return bus_init(m, try_bus_connect);
831}
832
663996b3
MS		 833static unsigned manager_dispatch_cleanup_queue(Manager *m) {
834 Unit *u;
835 unsigned n = 0;
836
837 assert(m);
838
839 while ((u = m->cleanup_queue)) {
840 assert(u->in_cleanup_queue);
841
842 unit_free(u);
843 n++;
844 }
845
846 return n;
847}
848
849enum {
850 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
851 GC_OFFSET_UNSURE, /* No clue */
852 GC_OFFSET_GOOD, /* We still need this unit */
853 GC_OFFSET_BAD, /* We don't need this unit anymore */
854 _GC_OFFSET_MAX
855};
856
5a920b42
MP		 857static void unit_gc_mark_good(Unit *u, unsigned gc_marker)
858{
859 Iterator i;
860 Unit *other;
861
862 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
863
864 /* Recursively mark referenced units as GOOD as well */
865 SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i)
866 if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE)
867 unit_gc_mark_good(other, gc_marker);
868}
869
663996b3
MS		 870static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
871 Iterator i;
872 Unit *other;
873 bool is_bad;
874
875 assert(u);
876
877 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
878 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
5a920b42 879 u->gc_marker == gc_marker + GC_OFFSET_UNSURE ||
663996b3
MS		 880 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
881 return;
882
883 if (u->in_cleanup_queue)
884 goto bad;
885
886 if (unit_check_gc(u))
887 goto good;
888
889 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
890
891 is_bad = true;
892
893 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
894 unit_gc_sweep(other, gc_marker);
895
896 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
897 goto good;
898
899 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
900 is_bad = false;
901 }
902
903 if (is_bad)
904 goto bad;
905
906 /* We were unable to find anything out about this entry, so
907 * let's investigate it later */
908 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
909 unit_add_to_gc_queue(u);
910 return;
911
912bad:
913 /* We definitely know that this one is not useful anymore, so
914 * let's mark it for deletion */
915 u->gc_marker = gc_marker + GC_OFFSET_BAD;
916 unit_add_to_cleanup_queue(u);
917 return;
918
919good:
5a920b42 920 unit_gc_mark_good(u, gc_marker);
663996b3
MS		 921}
922
923static unsigned manager_dispatch_gc_queue(Manager *m) {
924 Unit *u;
925 unsigned n = 0;
926 unsigned gc_marker;
927
928 assert(m);
929
14228c0d 930 /* log_debug("Running GC..."); */
663996b3
MS		 931
932 m->gc_marker += _GC_OFFSET_MAX;
933 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
934 m->gc_marker = 1;
935
936 gc_marker = m->gc_marker;
937
938 while ((u = m->gc_queue)) {
939 assert(u->in_gc_queue);
940
941 unit_gc_sweep(u, gc_marker);
942
60f067b4 943 LIST_REMOVE(gc_queue, m->gc_queue, u);
663996b3
MS		 944 u->in_gc_queue = false;
945
946 n++;
947
948 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
949 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
e3bff60a
MP		 950 if (u->id)
951 log_unit_debug(u, "Collecting.");
663996b3
MS		 952 u->gc_marker = gc_marker + GC_OFFSET_BAD;
953 unit_add_to_cleanup_queue(u);
954 }
955 }
956
957 m->n_in_gc_queue = 0;
663996b3
MS		 958
959 return n;
960}
961
962static void manager_clear_jobs_and_units(Manager *m) {
963 Unit *u;
964
965 assert(m);
966
967 while ((u = hashmap_first(m->units)))
968 unit_free(u);
969
970 manager_dispatch_cleanup_queue(m);
971
972 assert(!m->load_queue);
973 assert(!m->run_queue);
974 assert(!m->dbus_unit_queue);
975 assert(!m->dbus_job_queue);
976 assert(!m->cleanup_queue);
977 assert(!m->gc_queue);
978
979 assert(hashmap_isempty(m->jobs));
980 assert(hashmap_isempty(m->units));
981
982 m->n_on_console = 0;
983 m->n_running_jobs = 0;
984}
985
f47781d8 986Manager* manager_free(Manager *m) {
663996b3
MS		 987 UnitType c;
988 int i;
989
f47781d8
MP		 990 if (!m)
991 return NULL;
663996b3
MS		 992
993 manager_clear_jobs_and_units(m);
994
995 for (c = 0; c < _UNIT_TYPE_MAX; c++)
996 if (unit_vtable[c]->shutdown)
997 unit_vtable[c]->shutdown(m);
998
999 /* If we reexecute ourselves, we keep the root cgroup
1000 * around */
1001 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
1002
aa27b158 1003 lookup_paths_flush_generator(&m->lookup_paths);
663996b3
MS		 1004
1005 bus_done(m);
1006
1007 hashmap_free(m->units);
1008 hashmap_free(m->jobs);
60f067b4
JS		 1009 hashmap_free(m->watch_pids1);
1010 hashmap_free(m->watch_pids2);
663996b3
MS		 1011 hashmap_free(m->watch_bus);
1012
60f067b4
JS		 1013 set_free(m->startup_units);
1014 set_free(m->failed_units);
1015
1016 sd_event_source_unref(m->signal_event_source);
1017 sd_event_source_unref(m->notify_event_source);
aa27b158 1018 sd_event_source_unref(m->cgroups_agent_event_source);
60f067b4
JS		 1019 sd_event_source_unref(m->time_change_event_source);
1020 sd_event_source_unref(m->jobs_in_progress_event_source);
60f067b4
JS		 1021 sd_event_source_unref(m->run_queue_event_source);
1022
1023 safe_close(m->signal_fd);
1024 safe_close(m->notify_fd);
aa27b158 1025 safe_close(m->cgroups_agent_fd);
60f067b4
JS		 1026 safe_close(m->time_change_fd);
1027 safe_close(m->kdbus_fd);
1028
5eef597e
MP		 1029 manager_close_ask_password(m);
1030
60f067b4
JS		 1031 manager_close_idle_pipe(m);
1032
1033 udev_unref(m->udev);
1034 sd_event_unref(m->event);
663996b3
MS		 1035
1036 free(m->notify_socket);
1037
1038 lookup_paths_free(&m->lookup_paths);
1039 strv_free(m->environment);
1040
14228c0d 1041 hashmap_free(m->cgroup_unit);
663996b3
MS		 1042 set_free_free(m->unit_path_cache);
1043
663996b3
MS		 1044 free(m->switch_root);
1045 free(m->switch_root_init);
1046
60f067b4 1047 for (i = 0; i < _RLIMIT_MAX; i++)
4c89c718 1048 m->rlimit[i] = mfree(m->rlimit[i]);
663996b3 1049
14228c0d
MB		 1050 assert(hashmap_isempty(m->units_requiring_mounts_for));
1051 hashmap_free(m->units_requiring_mounts_for);
1052
663996b3 1053 free(m);
f47781d8 1054 return NULL;
663996b3
MS		 1055}
1056
db2df898 1057void manager_enumerate(Manager *m) {
663996b3
MS		 1058 UnitType c;
1059
1060 assert(m);
1061
1062 /* Let's ask every type to load all units from disk/kernel
1063 * that it might know */
e735f4d4 1064 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
e3bff60a
MP		 1065 if (!unit_type_supported(c)) {
1066 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
e735f4d4 1067 continue;
14228c0d 1068 }
663996b3 1069
e735f4d4
MP		 1070 if (!unit_vtable[c]->enumerate)
1071 continue;
1072
db2df898 1073 unit_vtable[c]->enumerate(m);
e735f4d4
MP		 1074 }
1075
663996b3 1076 manager_dispatch_load_queue(m);
663996b3
MS		 1077}
1078
e3bff60a 1079static void manager_coldplug(Manager *m) {
663996b3
MS		 1080 Iterator i;
1081 Unit *u;
1082 char *k;
e3bff60a 1083 int r;
663996b3
MS		 1084
1085 assert(m);
1086
1087 /* Then, let's set up their initial state. */
1088 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1089
1090 /* ignore aliases */
1091 if (u->id != k)
1092 continue;
1093
e3bff60a
MP		 1094 r = unit_coldplug(u);
1095 if (r < 0)
1096 log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
663996b3 1097 }
663996b3
MS		 1098}
1099
1100static void manager_build_unit_path_cache(Manager *m) {
1101 char **i;
663996b3
MS		 1102 int r;
1103
1104 assert(m);
1105
1106 set_free_free(m->unit_path_cache);
1107
5eef597e 1108 m->unit_path_cache = set_new(&string_hash_ops);
663996b3 1109 if (!m->unit_path_cache) {
aa27b158
MP		 1110 r = -ENOMEM;
1111 goto fail;
663996b3
MS		 1112 }
1113
1114 /* This simply builds a list of files we know exist, so that
1115 * we don't always have to go to disk */
1116
aa27b158
MP		 1117 STRV_FOREACH(i, m->lookup_paths.search_path) {
1118 _cleanup_closedir_ DIR *d = NULL;
663996b3
MS		 1119 struct dirent *de;
1120
1121 d = opendir(*i);
1122 if (!d) {
1123 if (errno != ENOENT)
aa27b158 1124 log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i);
663996b3
MS		 1125 continue;
1126 }
1127
aa27b158 1128 FOREACH_DIRENT(de, d, r = -errno; goto fail) {
663996b3
MS		 1129 char *p;
1130
663996b3
MS		 1131 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
1132 if (!p) {
1133 r = -ENOMEM;
1134 goto fail;
1135 }
1136
1137 r = set_consume(m->unit_path_cache, p);
1138 if (r < 0)
1139 goto fail;
1140 }
663996b3
MS		 1141 }
1142
1143 return;
1144
1145fail:
aa27b158
MP		 1146 log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m");
1147 m->unit_path_cache = set_free_free(m->unit_path_cache);
663996b3
MS		 1148}
1149
db2df898 1150static void manager_distribute_fds(Manager *m, FDSet *fds) {
60f067b4 1151 Iterator i;
db2df898 1152 Unit *u;
60f067b4
JS		 1153
1154 assert(m);
1155
1156 HASHMAP_FOREACH(u, m->units, i) {
1157
1158 if (fdset_size(fds) <= 0)
1159 break;
1160
db2df898
MP		 1161 if (!UNIT_VTABLE(u)->distribute_fds)
1162 continue;
60f067b4 1163
db2df898
MP		 1164 UNIT_VTABLE(u)->distribute_fds(u, fds);
1165 }
60f067b4
JS		 1166}
1167
663996b3
MS		 1168int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1169 int r, q;
1170
1171 assert(m);
1172
aa27b158
MP		 1173 r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
1174 if (r < 0)
1175 return r;
1176
1177 /* Make sure the transient directory always exists, so that it remains in the search path */
1178 r = mkdir_p_label(m->lookup_paths.transient, 0755);
e735f4d4
MP		 1179 if (r < 0)
1180 return r;
663996b3 1181
aa27b158
MP		 1182 dual_timestamp_get(&m->generators_start_timestamp);
1183 r = manager_run_generators(m);
1184 dual_timestamp_get(&m->generators_finish_timestamp);
663996b3
MS		 1185 if (r < 0)
1186 return r;
1187
aa27b158 1188 lookup_paths_reduce(&m->lookup_paths);
663996b3
MS		 1189 manager_build_unit_path_cache(m);
1190
1191 /* If we will deserialize make sure that during enumeration
1192 * this is already known, so we increase the counter here
1193 * already */
1194 if (serialization)
aa27b158 1195 m->n_reloading++;
663996b3
MS		 1196
1197 /* First, enumerate what we can from all config files */
60f067b4 1198 dual_timestamp_get(&m->units_load_start_timestamp);
db2df898 1199 manager_enumerate(m);
60f067b4 1200 dual_timestamp_get(&m->units_load_finish_timestamp);
663996b3
MS		 1201
1202 /* Second, deserialize if there is something to deserialize */
5eef597e
MP		 1203 if (serialization)
1204 r = manager_deserialize(m, serialization, fds);
663996b3
MS		 1205
1206 /* Any fds left? Find some unit which wants them. This is
1207 * useful to allow container managers to pass some file
1208 * descriptors to us pre-initialized. This enables
1209 * socket-based activation of entire containers. */
db2df898 1210 manager_distribute_fds(m, fds);
663996b3 1211
60f067b4
JS		 1212 /* We might have deserialized the notify fd, but if we didn't
1213 * then let's create the bus now */
5eef597e
MP		 1214 q = manager_setup_notify(m);
1215 if (q < 0 && r == 0)
1216 r = q;
60f067b4 1217
aa27b158
MP		 1218 q = manager_setup_cgroups_agent(m);
1219 if (q < 0 && r == 0)
1220 r = q;
1221
60f067b4
JS		 1222 /* We might have deserialized the kdbus control fd, but if we
1223 * didn't, then let's create the bus now. */
60f067b4
JS		 1224 manager_connect_bus(m, !!serialization);
1225 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1226
663996b3 1227 /* Third, fire things up! */
e3bff60a 1228 manager_coldplug(m);
663996b3
MS		 1229
1230 if (serialization) {
1231 assert(m->n_reloading > 0);
aa27b158 1232 m->n_reloading--;
14228c0d
MB		 1233
1234 /* Let's wait for the UnitNew/JobNew messages being
1235 * sent, before we notify that the reload is
1236 * finished */
1237 m->send_reloading_done = true;
663996b3
MS		 1238 }
1239
1240 return r;
1241}
1242
db2df898 1243int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) {
663996b3
MS		 1244 int r;
1245 Transaction *tr;
1246
1247 assert(m);
1248 assert(type < _JOB_TYPE_MAX);
1249 assert(unit);
1250 assert(mode < _JOB_MODE_MAX);
1251
f47781d8
MP		 1252 if (mode == JOB_ISOLATE && type != JOB_START)
1253 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
663996b3 1254
f47781d8
MP		 1255 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1256 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
663996b3 1257
e3bff60a 1258 log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
663996b3 1259
e3bff60a 1260 type = job_type_collapse(type, unit);
663996b3
MS		 1261
1262 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1263 if (!tr)
1264 return -ENOMEM;
1265
db2df898 1266 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false,
663996b3
MS		 1267 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1268 mode == JOB_IGNORE_DEPENDENCIES, e);
1269 if (r < 0)
1270 goto tr_abort;
1271
1272 if (mode == JOB_ISOLATE) {
1273 r = transaction_add_isolate_jobs(tr, m);
1274 if (r < 0)
1275 goto tr_abort;
1276 }
1277
1278 r = transaction_activate(tr, m, mode, e);
1279 if (r < 0)
1280 goto tr_abort;
1281
e3bff60a 1282 log_unit_debug(unit,
663996b3
MS		 1283 "Enqueued job %s/%s as %u", unit->id,
1284 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1285
1286 if (_ret)
1287 *_ret = tr->anchor_job;
1288
1289 transaction_free(tr);
1290 return 0;
1291
1292tr_abort:
1293 transaction_abort(tr);
1294 transaction_free(tr);
1295 return r;
1296}
1297
db2df898 1298int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) {
663996b3
MS		 1299 Unit *unit;
1300 int r;
1301
1302 assert(m);
1303 assert(type < _JOB_TYPE_MAX);
1304 assert(name);
1305 assert(mode < _JOB_MODE_MAX);
1306
1307 r = manager_load_unit(m, name, NULL, NULL, &unit);
1308 if (r < 0)
1309 return r;
1310
db2df898
MP		 1311 return manager_add_job(m, type, unit, mode, e, ret);
1312}
1313
1314int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) {
4c89c718 1315 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
db2df898
MP		 1316 int r;
1317
1318 assert(m);
1319 assert(type < _JOB_TYPE_MAX);
1320 assert(name);
1321 assert(mode < _JOB_MODE_MAX);
1322
1323 r = manager_add_job_by_name(m, type, name, mode, &error, ret);
1324 if (r < 0)
1325 return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r));
1326
1327 return r;
663996b3
MS		 1328}
1329
1330Job *manager_get_job(Manager *m, uint32_t id) {
1331 assert(m);
1332
1333 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1334}
1335
1336Unit *manager_get_unit(Manager *m, const char *name) {
1337 assert(m);
1338 assert(name);
1339
1340 return hashmap_get(m->units, name);
1341}
1342
1343unsigned manager_dispatch_load_queue(Manager *m) {
1344 Unit *u;
1345 unsigned n = 0;
1346
1347 assert(m);
1348
1349 /* Make sure we are not run recursively */
1350 if (m->dispatching_load_queue)
1351 return 0;
1352
1353 m->dispatching_load_queue = true;
1354
1355 /* Dispatches the load queue. Takes a unit from the queue and
1356 * tries to load its data until the queue is empty */
1357
1358 while ((u = m->load_queue)) {
1359 assert(u->in_load_queue);
1360
1361 unit_load(u);
1362 n++;
1363 }
1364
1365 m->dispatching_load_queue = false;
1366 return n;
1367}
1368
14228c0d
MB		 1369int manager_load_unit_prepare(
1370 Manager *m,
1371 const char *name,
1372 const char *path,
60f067b4 1373 sd_bus_error *e,
14228c0d
MB		 1374 Unit **_ret) {
1375
663996b3
MS		 1376 Unit *ret;
1377 UnitType t;
1378 int r;
1379
1380 assert(m);
1381 assert(name || path);
1382
1383 /* This will prepare the unit for loading, but not actually
1384 * load anything from disk. */
1385
60f067b4
JS		 1386 if (path && !is_path(path))
1387 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
663996b3
MS		 1388
1389 if (!name)
60f067b4 1390 name = basename(path);
663996b3
MS		 1391
1392 t = unit_name_to_type(name);
1393
aa27b158
MP		 1394 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) {
1395 if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE))
1396 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name);
1397
60f067b4 1398 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
aa27b158 1399 }
663996b3
MS		 1400
1401 ret = manager_get_unit(m, name);
1402 if (ret) {
1403 *_ret = ret;
1404 return 1;
1405 }
1406
1407 ret = unit_new(m, unit_vtable[t]->object_size);
1408 if (!ret)
1409 return -ENOMEM;
1410
1411 if (path) {
1412 ret->fragment_path = strdup(path);
1413 if (!ret->fragment_path) {
1414 unit_free(ret);
1415 return -ENOMEM;
1416 }
1417 }
1418
14228c0d
MB		 1419 r = unit_add_name(ret, name);
1420 if (r < 0) {
663996b3
MS		 1421 unit_free(ret);
1422 return r;
1423 }
1424
1425 unit_add_to_load_queue(ret);
1426 unit_add_to_dbus_queue(ret);
1427 unit_add_to_gc_queue(ret);
1428
1429 if (_ret)
1430 *_ret = ret;
1431
1432 return 0;
1433}
1434
14228c0d
MB		 1435int manager_load_unit(
1436 Manager *m,
1437 const char *name,
1438 const char *path,
60f067b4 1439 sd_bus_error *e,
14228c0d
MB		 1440 Unit **_ret) {
1441
663996b3
MS		 1442 int r;
1443
1444 assert(m);
1445
1446 /* This will load the service information files, but not actually
1447 * start any services or anything. */
1448
1449 r = manager_load_unit_prepare(m, name, path, e, _ret);
1450 if (r != 0)
1451 return r;
1452
1453 manager_dispatch_load_queue(m);
1454
1455 if (_ret)
1456 *_ret = unit_follow_merge(*_ret);
1457
1458 return 0;
1459}
1460
1461void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1462 Iterator i;
1463 Job *j;
1464
1465 assert(s);
1466 assert(f);
1467
1468 HASHMAP_FOREACH(j, s->jobs, i)
1469 job_dump(j, f, prefix);
1470}
1471
1472void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1473 Iterator i;
1474 Unit *u;
1475 const char *t;
1476
1477 assert(s);
1478 assert(f);
1479
1480 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1481 if (u->id == t)
1482 unit_dump(u, f, prefix);
1483}
1484
1485void manager_clear_jobs(Manager *m) {
1486 Job *j;
1487
1488 assert(m);
1489
1490 while ((j = hashmap_first(m->jobs)))
1491 /* No need to recurse. We're cancelling all jobs. */
aa27b158 1492 job_finish_and_invalidate(j, JOB_CANCELED, false, false);
663996b3
MS		 1493}
1494
60f067b4
JS		 1495static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1496 Manager *m = userdata;
663996b3 1497 Job *j;
663996b3 1498
60f067b4
JS		 1499 assert(source);
1500 assert(m);
663996b3
MS		 1501
1502 while ((j = m->run_queue)) {
1503 assert(j->installed);
1504 assert(j->in_run_queue);
1505
1506 job_run_and_invalidate(j);
663996b3
MS		 1507 }
1508
663996b3
MS		 1509 if (m->n_running_jobs > 0)
1510 manager_watch_jobs_in_progress(m);
1511
14228c0d
MB		 1512 if (m->n_on_console > 0)
1513 manager_watch_idle_pipe(m);
1514
60f067b4 1515 return 1;
663996b3
MS		 1516}
1517
60f067b4 1518static unsigned manager_dispatch_dbus_queue(Manager *m) {
663996b3
MS		 1519 Job *j;
1520 Unit *u;
1521 unsigned n = 0;
1522
1523 assert(m);
1524
1525 if (m->dispatching_dbus_queue)
1526 return 0;
1527
1528 m->dispatching_dbus_queue = true;
1529
1530 while ((u = m->dbus_unit_queue)) {
1531 assert(u->in_dbus_queue);
1532
1533 bus_unit_send_change_signal(u);
1534 n++;
1535 }
1536
1537 while ((j = m->dbus_job_queue)) {
1538 assert(j->in_dbus_queue);
1539
1540 bus_job_send_change_signal(j);
1541 n++;
1542 }
1543
1544 m->dispatching_dbus_queue = false;
14228c0d
MB		 1545
1546 if (m->send_reloading_done) {
1547 m->send_reloading_done = false;
1548
60f067b4 1549 bus_manager_send_reloading(m, false);
14228c0d
MB		 1550 }
1551
60f067b4
JS		 1552 if (m->queued_message)
1553 bus_send_queued_message(m);
1554
663996b3
MS		 1555 return n;
1556}
1557
aa27b158
MP		 1558static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1559 Manager *m = userdata;
1560 char buf[PATH_MAX+1];
1561 ssize_t n;
1562
1563 n = recv(fd, buf, sizeof(buf), 0);
1564 if (n < 0)
1565 return log_error_errno(errno, "Failed to read cgroups agent message: %m");
1566 if (n == 0) {
1567 log_error("Got zero-length cgroups agent message, ignoring.");
1568 return 0;
1569 }
1570 if ((size_t) n >= sizeof(buf)) {
1571 log_error("Got overly long cgroups agent message, ignoring.");
1572 return 0;
1573 }
1574
1575 if (memchr(buf, 0, n)) {
1576 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
1577 return 0;
1578 }
1579 buf[n] = 0;
1580
1581 manager_notify_cgroup_empty(m, buf);
1582 bus_forward_agent_released(m, buf);
1583
1584 return 0;
1585}
1586
db2df898 1587static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, size_t n, FDSet *fds) {
60f067b4
JS		 1588 _cleanup_strv_free_ char **tags = NULL;
1589
1590 assert(m);
1591 assert(u);
1592 assert(buf);
1593 assert(n > 0);
1594
1595 tags = strv_split(buf, "\n\r");
1596 if (!tags) {
1597 log_oom();
1598 return;
1599 }
1600
60f067b4 1601 if (UNIT_VTABLE(u)->notify_message)
e735f4d4 1602 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
e3bff60a
MP		 1603 else
1604 log_unit_debug(u, "Got notification message for unit. Ignoring.");
60f067b4
JS		 1605}
1606
1607static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
5a920b42 1608
db2df898 1609 _cleanup_fdset_free_ FDSet *fds = NULL;
60f067b4 1610 Manager *m = userdata;
db2df898
MP		 1611 char buf[NOTIFY_BUFFER_MAX+1];
1612 struct iovec iovec = {
1613 .iov_base = buf,
1614 .iov_len = sizeof(buf)-1,
1615 };
1616 union {
1617 struct cmsghdr cmsghdr;
1618 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1619 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
1620 } control = {};
1621 struct msghdr msghdr = {
1622 .msg_iov = &iovec,
1623 .msg_iovlen = 1,
1624 .msg_control = &control,
1625 .msg_controllen = sizeof(control),
1626 };
1627
1628 struct cmsghdr *cmsg;
1629 struct ucred *ucred = NULL;
1630 bool found = false;
1631 Unit *u1, *u2, *u3;
1632 int r, *fd_array = NULL;
1633 unsigned n_fds = 0;
663996b3
MS		 1634 ssize_t n;
1635
1636 assert(m);
60f067b4
JS		 1637 assert(m->notify_fd == fd);
1638
1639 if (revents != EPOLLIN) {
1640 log_warning("Got unexpected poll event for notify fd.");
1641 return 0;
1642 }
663996b3 1643
db2df898
MP		 1644 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1645 if (n < 0) {
1646 if (errno == EAGAIN || errno == EINTR)
1647 return 0;
663996b3 1648
db2df898
MP		 1649 return -errno;
1650 }
663996b3 1651
db2df898
MP		 1652 CMSG_FOREACH(cmsg, &msghdr) {
1653 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
e735f4d4 1654
db2df898
MP		 1655 fd_array = (int*) CMSG_DATA(cmsg);
1656 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
e735f4d4 1657
db2df898
MP		 1658 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1659 cmsg->cmsg_type == SCM_CREDENTIALS &&
1660 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
e735f4d4 1661
db2df898 1662 ucred = (struct ucred*) CMSG_DATA(cmsg);
e735f4d4 1663 }
db2df898 1664 }
e735f4d4 1665
db2df898
MP		 1666 if (n_fds > 0) {
1667 assert(fd_array);
e735f4d4 1668
db2df898
MP		 1669 r = fdset_new_array(&fds, fd_array, n_fds);
1670 if (r < 0) {
1671 close_many(fd_array, n_fds);
1672 return log_oom();
e735f4d4 1673 }
db2df898 1674 }
e735f4d4 1675
db2df898
MP		 1676 if (!ucred || ucred->pid <= 0) {
1677 log_warning("Received notify message without valid credentials. Ignoring.");
1678 return 0;
1679 }
663996b3 1680
db2df898
MP		 1681 if ((size_t) n >= sizeof(buf)) {
1682 log_warning("Received notify message exceeded maximum size. Ignoring.");
1683 return 0;
1684 }
663996b3 1685
db2df898 1686 buf[n] = 0;
663996b3 1687
db2df898
MP		 1688 /* Notify every unit that might be interested, but try
1689 * to avoid notifying the same one multiple times. */
1690 u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
1691 if (u1) {
1692 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
1693 found = true;
1694 }
60f067b4 1695
db2df898
MP		 1696 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
1697 if (u2 && u2 != u1) {
1698 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
1699 found = true;
1700 }
663996b3 1701
db2df898
MP		 1702 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
1703 if (u3 && u3 != u2 && u3 != u1) {
1704 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
1705 found = true;
1706 }
60f067b4 1707
db2df898
MP		 1708 if (!found)
1709 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
e735f4d4 1710
db2df898
MP		 1711 if (fdset_size(fds) > 0)
1712 log_warning("Got auxiliary fds with notification message, closing all.");
663996b3
MS		 1713
1714 return 0;
1715}
1716
db2df898 1717static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
5a920b42
MP		 1718 uint64_t iteration;
1719
60f067b4
JS		 1720 assert(m);
1721 assert(u);
1722 assert(si);
1723
5a920b42
MP		 1724 sd_event_get_iteration(m->event, &iteration);
1725
e3bff60a 1726 log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
60f067b4
JS		 1727
1728 unit_unwatch_pid(u, si->si_pid);
aa27b158 1729
5a920b42
MP		 1730 if (UNIT_VTABLE(u)->sigchld_event) {
1731 if (set_size(u->pids) <= 1 ||
1732 iteration != u->sigchldgen ||
1733 unit_main_pid(u) == si->si_pid ||
1734 unit_control_pid(u) == si->si_pid) {
1735 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1736 u->sigchldgen = iteration;
1737 } else
1738 log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids));
1739 }
60f067b4
JS		 1740}
1741
663996b3
MS		 1742static int manager_dispatch_sigchld(Manager *m) {
1743 assert(m);
1744
1745 for (;;) {
1746 siginfo_t si = {};
663996b3
MS		 1747
1748 /* First we call waitd() for a PID and do not reap the
1749 * zombie. That way we can still access /proc/$PID for
1750 * it while it is a zombie. */
1751 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1752
1753 if (errno == ECHILD)
1754 break;
1755
1756 if (errno == EINTR)
1757 continue;
1758
1759 return -errno;
1760 }
1761
1762 if (si.si_pid <= 0)
1763 break;
1764
1765 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1766 _cleanup_free_ char *name = NULL;
5eef597e 1767 Unit *u1, *u2, *u3;
663996b3
MS		 1768
1769 get_process_comm(si.si_pid, &name);
663996b3 1770
60f067b4
JS		 1771 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1772 si.si_pid, strna(name),
1773 sigchld_code_to_string(si.si_code),
1774 si.si_status,
1775 strna(si.si_code == CLD_EXITED
1776 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1777 : signal_to_string(si.si_status)));
663996b3 1778
60f067b4
JS		 1779 /* And now figure out the unit this belongs
1780 * to, it might be multiple... */
d9dfd233 1781 u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
5eef597e
MP		 1782 if (u1)
1783 invoke_sigchld_event(m, u1, &si);
d9dfd233 1784 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
5eef597e
MP		 1785 if (u2 && u2 != u1)
1786 invoke_sigchld_event(m, u2, &si);
d9dfd233 1787 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
5eef597e
MP		 1788 if (u3 && u3 != u2 && u3 != u1)
1789 invoke_sigchld_event(m, u3, &si);
60f067b4 1790 }
663996b3
MS		 1791
1792 /* And now, we actually reap the zombie. */
1793 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1794 if (errno == EINTR)
1795 continue;
1796
1797 return -errno;
60f067b4 1798 }
663996b3
MS		 1799 }
1800
1801 return 0;
1802}
1803
1804static int manager_start_target(Manager *m, const char *name, JobMode mode) {
4c89c718 1805 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
663996b3 1806 int r;
663996b3 1807
e3bff60a 1808 log_debug("Activating special unit %s", name);
663996b3 1809
db2df898 1810 r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL);
663996b3 1811 if (r < 0)
e3bff60a 1812 log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
663996b3
MS		 1813
1814 return r;
1815}
1816
60f067b4
JS		 1817static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1818 Manager *m = userdata;
663996b3
MS		 1819 ssize_t n;
1820 struct signalfd_siginfo sfsi;
1821 bool sigchld = false;
5fd56512 1822 int r;
663996b3
MS		 1823
1824 assert(m);
60f067b4
JS		 1825 assert(m->signal_fd == fd);
1826
1827 if (revents != EPOLLIN) {
1828 log_warning("Got unexpected events from signal file descriptor.");
1829 return 0;
1830 }
663996b3
MS		 1831
1832 for (;;) {
60f067b4 1833 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
663996b3
MS		 1834 if (n != sizeof(sfsi)) {
1835
1836 if (n >= 0)
1837 return -EIO;
1838
1839 if (errno == EINTR || errno == EAGAIN)
1840 break;
1841
1842 return -errno;
1843 }
1844
60f067b4 1845 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
aa27b158 1846 (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m))
60f067b4
JS		 1847 ? LOG_DEBUG : LOG_INFO,
1848 &sfsi);
663996b3
MS		 1849
1850 switch (sfsi.ssi_signo) {
1851
1852 case SIGCHLD:
1853 sigchld = true;
1854 break;
1855
1856 case SIGTERM:
aa27b158 1857 if (MANAGER_IS_SYSTEM(m)) {
663996b3
MS		 1858 /* This is for compatibility with the
1859 * original sysvinit */
1860 m->exit_code = MANAGER_REEXECUTE;
1861 break;
1862 }
1863
1864 /* Fall through */
1865
1866 case SIGINT:
aa27b158 1867 if (MANAGER_IS_SYSTEM(m)) {
e735f4d4
MP		 1868
1869 /* If the user presses C-A-D more than
1870 * 7 times within 2s, we reboot
1871 * immediately. */
1872
1873 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1874 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1875 else {
1876 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1877 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
1878 m->exit_code = MANAGER_REBOOT;
1879 }
1880
663996b3
MS		 1881 break;
1882 }
1883
1884 /* Run the exit target if there is one, if not, just exit. */
1885 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1886 m->exit_code = MANAGER_EXIT;
1887 return 0;
1888 }
1889
1890 break;
1891
1892 case SIGWINCH:
aa27b158 1893 if (MANAGER_IS_SYSTEM(m))
663996b3
MS		 1894 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1895
1896 /* This is a nop on non-init */
1897 break;
1898
1899 case SIGPWR:
aa27b158 1900 if (MANAGER_IS_SYSTEM(m))
663996b3
MS		 1901 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1902
1903 /* This is a nop on non-init */
1904 break;
1905
1906 case SIGUSR1: {
1907 Unit *u;
1908
1909 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1910
1911 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1912 log_info("Trying to reconnect to bus...");
1913 bus_init(m, true);
1914 }
1915
1916 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1917 log_info("Loading D-Bus service...");
1918 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1919 }
1920
1921 break;
1922 }
1923
1924 case SIGUSR2: {
60f067b4
JS		 1925 _cleanup_free_ char *dump = NULL;
1926 _cleanup_fclose_ FILE *f = NULL;
663996b3
MS		 1927 size_t size;
1928
60f067b4
JS		 1929 f = open_memstream(&dump, &size);
1930 if (!f) {
5fd56512 1931 log_warning_errno(errno, "Failed to allocate memory stream: %m");
663996b3
MS		 1932 break;
1933 }
1934
1935 manager_dump_units(m, f, "\t");
1936 manager_dump_jobs(m, f, "\t");
1937
5fd56512
MP		 1938 r = fflush_and_check(f);
1939 if (r < 0) {
1940 log_warning_errno(r, "Failed to write status stream: %m");
60f067b4
JS		 1941 break;
1942 }
663996b3 1943
60f067b4 1944 log_dump(LOG_INFO, dump);
663996b3
MS		 1945 break;
1946 }
1947
1948 case SIGHUP:
1949 m->exit_code = MANAGER_RELOAD;
1950 break;
1951
1952 default: {
1953
1954 /* Starting SIGRTMIN+0 */
1955 static const char * const target_table[] = {
1956 [0] = SPECIAL_DEFAULT_TARGET,
1957 [1] = SPECIAL_RESCUE_TARGET,
1958 [2] = SPECIAL_EMERGENCY_TARGET,
1959 [3] = SPECIAL_HALT_TARGET,
1960 [4] = SPECIAL_POWEROFF_TARGET,
1961 [5] = SPECIAL_REBOOT_TARGET,
1962 [6] = SPECIAL_KEXEC_TARGET
1963 };
1964
1965 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1966 static const ManagerExitCode code_table[] = {
1967 [0] = MANAGER_HALT,
1968 [1] = MANAGER_POWEROFF,
1969 [2] = MANAGER_REBOOT,
1970 [3] = MANAGER_KEXEC
1971 };
1972
1973 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1974 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1975 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1976 manager_start_target(m, target_table[idx],
1977 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1978 break;
1979 }
1980
1981 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1982 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1983 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1984 break;
1985 }
1986
1987 switch (sfsi.ssi_signo - SIGRTMIN) {
1988
1989 case 20:
60f067b4 1990 manager_set_show_status(m, SHOW_STATUS_YES);
663996b3
MS		 1991 break;
1992
1993 case 21:
60f067b4 1994 manager_set_show_status(m, SHOW_STATUS_NO);
663996b3
MS		 1995 break;
1996
1997 case 22:
1998 log_set_max_level(LOG_DEBUG);
4c89c718 1999 log_info("Setting log level to debug.");
663996b3
MS		 2000 break;
2001
2002 case 23:
2003 log_set_max_level(LOG_INFO);
4c89c718 2004 log_info("Setting log level to info.");
663996b3
MS		 2005 break;
2006
2007 case 24:
aa27b158 2008 if (MANAGER_IS_USER(m)) {
663996b3
MS		 2009 m->exit_code = MANAGER_EXIT;
2010 return 0;
2011 }
2012
2013 /* This is a nop on init */
2014 break;
2015
2016 case 26:
5eef597e 2017 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
663996b3
MS		 2018 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2019 log_notice("Setting log target to journal-or-kmsg.");
2020 break;
2021
2022 case 27:
2023 log_set_target(LOG_TARGET_CONSOLE);
2024 log_notice("Setting log target to console.");
2025 break;
2026
2027 case 28:
2028 log_set_target(LOG_TARGET_KMSG);
2029 log_notice("Setting log target to kmsg.");
2030 break;
2031
663996b3
MS		 2032 default:
2033 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
2034 }
2035 }
2036 }
2037 }
2038
2039 if (sigchld)
60f067b4 2040 manager_dispatch_sigchld(m);
663996b3
MS		 2041
2042 return 0;
2043}
2044
60f067b4
JS		 2045static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2046 Manager *m = userdata;
2047 Iterator i;
2048 Unit *u;
663996b3
MS		 2049
2050 assert(m);
60f067b4 2051 assert(m->time_change_fd == fd);
663996b3 2052
60f067b4 2053 log_struct(LOG_INFO,
f47781d8
MP		 2054 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
2055 LOG_MESSAGE("Time has been changed"),
60f067b4 2056 NULL);
663996b3 2057
60f067b4
JS		 2058 /* Restart the watch */
2059 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
2060 m->time_change_fd = safe_close(m->time_change_fd);
663996b3 2061
60f067b4 2062 manager_setup_time_change(m);
663996b3 2063
60f067b4
JS		 2064 HASHMAP_FOREACH(u, m->units, i)
2065 if (UNIT_VTABLE(u)->time_change)
2066 UNIT_VTABLE(u)->time_change(u);
663996b3 2067
60f067b4
JS		 2068 return 0;
2069}
663996b3 2070
60f067b4
JS		 2071static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
2072 Manager *m = userdata;
663996b3 2073
60f067b4
JS		 2074 assert(m);
2075 assert(m->idle_pipe[2] == fd);
663996b3 2076
60f067b4 2077 m->no_console_output = m->n_on_console > 0;
663996b3 2078
60f067b4 2079 manager_close_idle_pipe(m);
663996b3 2080
60f067b4
JS		 2081 return 0;
2082}
663996b3 2083
60f067b4
JS		 2084static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
2085 Manager *m = userdata;
2086 int r;
2087 uint64_t next;
663996b3 2088
60f067b4
JS		 2089 assert(m);
2090 assert(source);
14228c0d 2091
60f067b4 2092 manager_print_jobs_in_progress(m);
14228c0d 2093
60f067b4
JS		 2094 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
2095 r = sd_event_source_set_time(source, next);
2096 if (r < 0)
2097 return r;
663996b3 2098
60f067b4 2099 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
663996b3
MS		 2100}
2101
2102int manager_loop(Manager *m) {
2103 int r;
2104
2105 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
2106
2107 assert(m);
60f067b4 2108 m->exit_code = MANAGER_OK;
663996b3
MS		 2109
2110 /* Release the path cache */
db2df898 2111 m->unit_path_cache = set_free_free(m->unit_path_cache);
663996b3
MS		 2112
2113 manager_check_finished(m);
2114
2115 /* There might still be some zombies hanging around from
60f067b4 2116 * before we were exec()'ed. Let's reap them. */
663996b3
MS		 2117 r = manager_dispatch_sigchld(m);
2118 if (r < 0)
2119 return r;
2120
60f067b4
JS		 2121 while (m->exit_code == MANAGER_OK) {
2122 usec_t wait_usec;
663996b3 2123
aa27b158 2124 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m))
663996b3
MS		 2125 watchdog_ping();
2126
2127 if (!ratelimit_test(&rl)) {
2128 /* Yay, something is going seriously wrong, pause a little */
2129 log_warning("Looping too fast. Throttling execution a little.");
2130 sleep(1);
663996b3
MS		 2131 }
2132
2133 if (manager_dispatch_load_queue(m) > 0)
2134 continue;
2135
14228c0d 2136 if (manager_dispatch_gc_queue(m) > 0)
663996b3
MS		 2137 continue;
2138
14228c0d 2139 if (manager_dispatch_cleanup_queue(m) > 0)
663996b3
MS		 2140 continue;
2141
14228c0d 2142 if (manager_dispatch_cgroup_queue(m) > 0)
663996b3
MS		 2143 continue;
2144
663996b3
MS		 2145 if (manager_dispatch_dbus_queue(m) > 0)
2146 continue;
2147
663996b3 2148 /* Sleep for half the watchdog time */
aa27b158 2149 if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) {
60f067b4
JS		 2150 wait_usec = m->runtime_watchdog / 2;
2151 if (wait_usec <= 0)
2152 wait_usec = 1;
663996b3 2153 } else
5eef597e 2154 wait_usec = USEC_INFINITY;
663996b3 2155
60f067b4 2156 r = sd_event_run(m->event, wait_usec);
f47781d8
MP		 2157 if (r < 0)
2158 return log_error_errno(r, "Failed to run event loop: %m");
663996b3
MS		 2159 }
2160
2161 return m->exit_code;
2162}
2163
60f067b4 2164int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
14228c0d 2165 _cleanup_free_ char *n = NULL;
663996b3
MS		 2166 Unit *u;
2167 int r;
2168
2169 assert(m);
2170 assert(s);
2171 assert(_u);
2172
14228c0d
MB		 2173 r = unit_name_from_dbus_path(s, &n);
2174 if (r < 0)
2175 return r;
663996b3
MS		 2176
2177 r = manager_load_unit(m, n, NULL, e, &u);
663996b3
MS		 2178 if (r < 0)
2179 return r;
2180
2181 *_u = u;
2182
2183 return 0;
2184}
2185
2186int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
60f067b4 2187 const char *p;
663996b3 2188 unsigned id;
60f067b4 2189 Job *j;
663996b3
MS		 2190 int r;
2191
2192 assert(m);
2193 assert(s);
2194 assert(_j);
2195
60f067b4
JS		 2196 p = startswith(s, "/org/freedesktop/systemd1/job/");
2197 if (!p)
663996b3
MS		 2198 return -EINVAL;
2199
60f067b4 2200 r = safe_atou(p, &id);
663996b3
MS		 2201 if (r < 0)
2202 return r;
2203
2204 j = manager_get_job(m, id);
2205 if (!j)
2206 return -ENOENT;
2207
2208 *_j = j;
2209
2210 return 0;
2211}
2212
2213void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2214
2215#ifdef HAVE_AUDIT
60f067b4 2216 _cleanup_free_ char *p = NULL;
f47781d8 2217 const char *msg;
e3bff60a 2218 int audit_fd, r;
663996b3 2219
aa27b158 2220 if (!MANAGER_IS_SYSTEM(m))
db2df898
MP		 2221 return;
2222
663996b3
MS		 2223 audit_fd = get_audit_fd();
2224 if (audit_fd < 0)
2225 return;
2226
2227 /* Don't generate audit events if the service was already
2228 * started and we're just deserializing */
aa27b158 2229 if (MANAGER_IS_RELOADING(m))
663996b3
MS		 2230 return;
2231
663996b3
MS		 2232 if (u->type != UNIT_SERVICE)
2233 return;
2234
e3bff60a
MP		 2235 r = unit_name_to_prefix_and_instance(u->id, &p);
2236 if (r < 0) {
2237 log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
663996b3
MS		 2238 return;
2239 }
2240
e735f4d4 2241 msg = strjoina("unit=", p);
f47781d8
MP		 2242 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2243 if (errno == EPERM)
663996b3
MS		 2244 /* We aren't allowed to send audit messages?
2245 * Then let's not retry again. */
2246 close_audit_fd();
f47781d8
MP		 2247 else
2248 log_warning_errno(errno, "Failed to send audit message: %m");
663996b3 2249 }
663996b3
MS		 2250#endif
2251
2252}
2253
2254void manager_send_unit_plymouth(Manager *m, Unit *u) {
aa27b158 2255 static const union sockaddr_union sa = PLYMOUTH_SOCKET;
60f067b4
JS		 2256 _cleanup_free_ char *message = NULL;
2257 _cleanup_close_ int fd = -1;
aa27b158 2258 int n = 0;
663996b3
MS		 2259
2260 /* Don't generate plymouth events if the service was already
2261 * started and we're just deserializing */
aa27b158 2262 if (MANAGER_IS_RELOADING(m))
663996b3
MS		 2263 return;
2264
aa27b158 2265 if (!MANAGER_IS_SYSTEM(m))
663996b3
MS		 2266 return;
2267
6300502b 2268 if (detect_container() > 0)
60f067b4
JS		 2269 return;
2270
663996b3
MS		 2271 if (u->type != UNIT_SERVICE &&
2272 u->type != UNIT_MOUNT &&
2273 u->type != UNIT_SWAP)
2274 return;
2275
2276 /* We set SOCK_NONBLOCK here so that we rather drop the
2277 * message then wait for plymouth */
2278 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2279 if (fd < 0) {
f47781d8 2280 log_error_errno(errno, "socket() failed: %m");
663996b3
MS		 2281 return;
2282 }
2283
aa27b158 2284 if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) {
663996b3 2285
60f067b4 2286 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
f47781d8 2287 log_error_errno(errno, "connect() failed: %m");
60f067b4 2288 return;
663996b3
MS		 2289 }
2290
2291 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2292 log_oom();
60f067b4 2293 return;
663996b3
MS		 2294 }
2295
2296 errno = 0;
60f067b4
JS		 2297 if (write(fd, message, n + 1) != n + 1)
2298 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
f47781d8 2299 log_error_errno(errno, "Failed to write Plymouth message: %m");
663996b3
MS		 2300}
2301
663996b3 2302int manager_open_serialization(Manager *m, FILE **_f) {
60f067b4
JS		 2303 const char *path;
2304 int fd = -1;
663996b3
MS		 2305 FILE *f;
2306
2307 assert(_f);
2308
aa27b158
MP		 2309 path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp";
2310 fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC);
60f067b4 2311 if (fd < 0)
663996b3 2312 return -errno;
663996b3
MS		 2313
2314 log_debug("Serializing state to %s", path);
663996b3
MS		 2315
2316 f = fdopen(fd, "w+");
60f067b4
JS		 2317 if (!f) {
2318 safe_close(fd);
663996b3 2319 return -errno;
60f067b4 2320 }
663996b3
MS		 2321
2322 *_f = f;
2323
2324 return 0;
2325}
2326
2327int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2328 Iterator i;
2329 Unit *u;
2330 const char *t;
2331 char **e;
2332 int r;
2333
2334 assert(m);
2335 assert(f);
2336 assert(fds);
2337
aa27b158 2338 m->n_reloading++;
663996b3 2339
e735f4d4 2340 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
663996b3
MS		 2341 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2342 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2343 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2344
2345 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
663996b3 2346 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
60f067b4 2347 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
663996b3
MS		 2348 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2349
2350 if (!in_initrd()) {
2351 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2352 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
60f067b4
JS		 2353 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2354 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2355 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2356 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2357 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2358 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
663996b3
MS		 2359 }
2360
2361 if (!switching_root) {
2362 STRV_FOREACH(e, m->environment) {
2363 _cleanup_free_ char *ce;
2364
2365 ce = cescape(*e);
60f067b4
JS		 2366 if (!ce)
2367 return -ENOMEM;
2368
2369 fprintf(f, "env=%s\n", *e);
663996b3
MS		 2370 }
2371 }
2372
60f067b4
JS		 2373 if (m->notify_fd >= 0) {
2374 int copy;
2375
2376 copy = fdset_put_dup(fds, m->notify_fd);
2377 if (copy < 0)
2378 return copy;
2379
2380 fprintf(f, "notify-fd=%i\n", copy);
2381 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2382 }
2383
aa27b158
MP		 2384 if (m->cgroups_agent_fd >= 0) {
2385 int copy;
2386
2387 copy = fdset_put_dup(fds, m->cgroups_agent_fd);
2388 if (copy < 0)
2389 return copy;
2390
2391 fprintf(f, "cgroups-agent-fd=%i\n", copy);
2392 }
2393
60f067b4
JS		 2394 if (m->kdbus_fd >= 0) {
2395 int copy;
2396
2397 copy = fdset_put_dup(fds, m->kdbus_fd);
2398 if (copy < 0)
2399 return copy;
2400
2401 fprintf(f, "kdbus-fd=%i\n", copy);
2402 }
2403
2404 bus_track_serialize(m->subscribed, f);
14228c0d 2405
663996b3
MS		 2406 fputc('\n', f);
2407
2408 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2409 if (u->id != t)
2410 continue;
2411
663996b3
MS		 2412 /* Start marker */
2413 fputs(u->id, f);
2414 fputc('\n', f);
2415
14228c0d
MB		 2416 r = unit_serialize(u, f, fds, !switching_root);
2417 if (r < 0) {
aa27b158 2418 m->n_reloading--;
663996b3
MS		 2419 return r;
2420 }
2421 }
2422
2423 assert(m->n_reloading > 0);
aa27b158 2424 m->n_reloading--;
663996b3
MS		 2425
2426 if (ferror(f))
2427 return -EIO;
2428
2429 r = bus_fdset_add_all(m, fds);
2430 if (r < 0)
2431 return r;
2432
2433 return 0;
2434}
2435
2436int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2437 int r = 0;
2438
2439 assert(m);
2440 assert(f);
2441
2442 log_debug("Deserializing state...");
2443
aa27b158 2444 m->n_reloading++;
663996b3
MS		 2445
2446 for (;;) {
2447 char line[LINE_MAX], *l;
2448
2449 if (!fgets(line, sizeof(line), f)) {
2450 if (feof(f))
2451 r = 0;
2452 else
2453 r = -errno;
2454
2455 goto finish;
2456 }
2457
2458 char_array_0(line);
2459 l = strstrip(line);
2460
2461 if (l[0] == 0)
2462 break;
2463
2464 if (startswith(l, "current-job-id=")) {
2465 uint32_t id;
2466
2467 if (safe_atou32(l+15, &id) < 0)
f47781d8 2468 log_debug("Failed to parse current job id value %s", l+15);
663996b3
MS		 2469 else
2470 m->current_job_id = MAX(m->current_job_id, id);
60f067b4 2471
663996b3
MS		 2472 } else if (startswith(l, "n-installed-jobs=")) {
2473 uint32_t n;
2474
2475 if (safe_atou32(l+17, &n) < 0)
f47781d8 2476 log_debug("Failed to parse installed jobs counter %s", l+17);
663996b3
MS		 2477 else
2478 m->n_installed_jobs += n;
60f067b4 2479
663996b3
MS		 2480 } else if (startswith(l, "n-failed-jobs=")) {
2481 uint32_t n;
2482
2483 if (safe_atou32(l+14, &n) < 0)
f47781d8 2484 log_debug("Failed to parse failed jobs counter %s", l+14);
663996b3
MS		 2485 else
2486 m->n_failed_jobs += n;
60f067b4 2487
663996b3
MS		 2488 } else if (startswith(l, "taint-usr=")) {
2489 int b;
2490
60f067b4
JS		 2491 b = parse_boolean(l+10);
2492 if (b < 0)
f47781d8 2493 log_debug("Failed to parse taint /usr flag %s", l+10);
663996b3
MS		 2494 else
2495 m->taint_usr = m->taint_usr || b;
60f067b4 2496
663996b3
MS		 2497 } else if (startswith(l, "firmware-timestamp="))
2498 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2499 else if (startswith(l, "loader-timestamp="))
2500 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2501 else if (startswith(l, "kernel-timestamp="))
2502 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2503 else if (startswith(l, "initrd-timestamp="))
2504 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2505 else if (startswith(l, "userspace-timestamp="))
2506 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2507 else if (startswith(l, "finish-timestamp="))
2508 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
60f067b4
JS		 2509 else if (startswith(l, "security-start-timestamp="))
2510 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2511 else if (startswith(l, "security-finish-timestamp="))
2512 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2513 else if (startswith(l, "generators-start-timestamp="))
2514 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2515 else if (startswith(l, "generators-finish-timestamp="))
2516 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2517 else if (startswith(l, "units-load-start-timestamp="))
2518 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2519 else if (startswith(l, "units-load-finish-timestamp="))
2520 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
663996b3
MS		 2521 else if (startswith(l, "env=")) {
2522 _cleanup_free_ char *uce = NULL;
2523 char **e;
2524
e3bff60a
MP		 2525 r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
2526 if (r < 0)
663996b3 2527 goto finish;
663996b3
MS		 2528
2529 e = strv_env_set(m->environment, uce);
2530 if (!e) {
2531 r = -ENOMEM;
2532 goto finish;
2533 }
2534
2535 strv_free(m->environment);
2536 m->environment = e;
60f067b4
JS		 2537
2538 } else if (startswith(l, "notify-fd=")) {
2539 int fd;
2540
2541 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
f47781d8 2542 log_debug("Failed to parse notify fd: %s", l + 10);
60f067b4
JS		 2543 else {
2544 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2545 safe_close(m->notify_fd);
2546 m->notify_fd = fdset_remove(fds, fd);
2547 }
2548
2549 } else if (startswith(l, "notify-socket=")) {
2550 char *n;
2551
2552 n = strdup(l+14);
2553 if (!n) {
2554 r = -ENOMEM;
2555 goto finish;
2556 }
2557
2558 free(m->notify_socket);
2559 m->notify_socket = n;
2560
aa27b158
MP		 2561 } else if (startswith(l, "cgroups-agent-fd=")) {
2562 int fd;
2563
2564 if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2565 log_debug("Failed to parse cgroups agent fd: %s", l + 10);
2566 else {
2567 m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source);
2568 safe_close(m->cgroups_agent_fd);
2569 m->cgroups_agent_fd = fdset_remove(fds, fd);
2570 }
2571
60f067b4
JS		 2572 } else if (startswith(l, "kdbus-fd=")) {
2573 int fd;
2574
2575 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
f47781d8 2576 log_debug("Failed to parse kdbus fd: %s", l + 9);
60f067b4
JS		 2577 else {
2578 safe_close(m->kdbus_fd);
2579 m->kdbus_fd = fdset_remove(fds, fd);
2580 }
2581
f47781d8
MP		 2582 } else {
2583 int k;
2584
2585 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2586 if (k < 0)
2587 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2588 else if (k == 0)
2589 log_debug("Unknown serialization item '%s'", l);
2590 }
663996b3
MS		 2591 }
2592
2593 for (;;) {
2594 Unit *u;
2595 char name[UNIT_NAME_MAX+2];
2596
2597 /* Start marker */
2598 if (!fgets(name, sizeof(name), f)) {
2599 if (feof(f))
2600 r = 0;
2601 else
2602 r = -errno;
2603
2604 goto finish;
2605 }
2606
2607 char_array_0(name);
2608
2609 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2610 if (r < 0)
2611 goto finish;
2612
2613 r = unit_deserialize(u, f, fds);
2614 if (r < 0)
2615 goto finish;
2616 }
2617
2618finish:
60f067b4 2619 if (ferror(f))
663996b3 2620 r = -EIO;
663996b3
MS		 2621
2622 assert(m->n_reloading > 0);
aa27b158 2623 m->n_reloading--;
663996b3
MS		 2624
2625 return r;
2626}
2627
663996b3
MS		 2628int manager_reload(Manager *m) {
2629 int r, q;
60f067b4
JS		 2630 _cleanup_fclose_ FILE *f = NULL;
2631 _cleanup_fdset_free_ FDSet *fds = NULL;
663996b3
MS		 2632
2633 assert(m);
2634
2635 r = manager_open_serialization(m, &f);
2636 if (r < 0)
2637 return r;
2638
aa27b158 2639 m->n_reloading++;
60f067b4 2640 bus_manager_send_reloading(m, true);
663996b3
MS		 2641
2642 fds = fdset_new();
2643 if (!fds) {
aa27b158 2644 m->n_reloading--;
60f067b4 2645 return -ENOMEM;
663996b3
MS		 2646 }
2647
2648 r = manager_serialize(m, f, fds, false);
2649 if (r < 0) {
aa27b158 2650 m->n_reloading--;
60f067b4 2651 return r;
663996b3
MS		 2652 }
2653
2654 if (fseeko(f, 0, SEEK_SET) < 0) {
aa27b158 2655 m->n_reloading--;
60f067b4 2656 return -errno;
663996b3
MS		 2657 }
2658
2659 /* From here on there is no way back. */
2660 manager_clear_jobs_and_units(m);
aa27b158 2661 lookup_paths_flush_generator(&m->lookup_paths);
663996b3
MS		 2662 lookup_paths_free(&m->lookup_paths);
2663
aa27b158 2664 q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL);
e735f4d4
MP		 2665 if (q < 0 && r >= 0)
2666 r = q;
663996b3 2667
aa27b158
MP		 2668 /* Find new unit paths */
2669 q = manager_run_generators(m);
e735f4d4 2670 if (q < 0 && r >= 0)
663996b3
MS		 2671 r = q;
2672
aa27b158 2673 lookup_paths_reduce(&m->lookup_paths);
663996b3
MS		 2674 manager_build_unit_path_cache(m);
2675
2676 /* First, enumerate what we can from all config files */
db2df898 2677 manager_enumerate(m);
663996b3
MS		 2678
2679 /* Second, deserialize our stored data */
2680 q = manager_deserialize(m, f, fds);
e735f4d4 2681 if (q < 0 && r >= 0)
663996b3
MS		 2682 r = q;
2683
2684 fclose(f);
2685 f = NULL;
2686
60f067b4
JS		 2687 /* Re-register notify_fd as event source */
2688 q = manager_setup_notify(m);
e735f4d4 2689 if (q < 0 && r >= 0)
60f067b4
JS		 2690 r = q;
2691
aa27b158
MP		 2692 q = manager_setup_cgroups_agent(m);
2693 if (q < 0 && r >= 0)
2694 r = q;
2695
663996b3 2696 /* Third, fire things up! */
e3bff60a 2697 manager_coldplug(m);
663996b3 2698
4c89c718
MP		 2699 /* Sync current state of bus names with our set of listening units */
2700 if (m->api_bus)
2701 manager_sync_bus_names(m, m->api_bus);
2702
663996b3
MS		 2703 assert(m->n_reloading > 0);
2704 m->n_reloading--;
2705
14228c0d
MB		 2706 m->send_reloading_done = true;
2707
663996b3
MS		 2708 return r;
2709}
2710
663996b3
MS		 2711void manager_reset_failed(Manager *m) {
2712 Unit *u;
2713 Iterator i;
2714
2715 assert(m);
2716
2717 HASHMAP_FOREACH(u, m->units, i)
2718 unit_reset_failed(u);
2719}
2720
2721bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2722 Unit *u;
2723
2724 assert(m);
2725 assert(name);
2726
2727 /* Returns true if the unit is inactive or going down */
2728 u = manager_get_unit(m, name);
2729 if (!u)
2730 return true;
2731
2732 return unit_inactive_or_pending(u);
2733}
2734
f47781d8 2735static void manager_notify_finished(Manager *m) {
663996b3
MS		 2736 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2737 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
60f067b4 2738
f47781d8 2739 if (m->test_run)
663996b3
MS		 2740 return;
2741
aa27b158 2742 if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) {
663996b3
MS		 2743
2744 /* Note that m->kernel_usec.monotonic is always at 0,
2745 * and m->firmware_usec.monotonic and
2746 * m->loader_usec.monotonic should be considered
2747 * negative values. */
2748
2749 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2750 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2751 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2752 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2753
2754 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2755
2756 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2757 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2758
5eef597e 2759 log_struct(LOG_INFO,
f47781d8 2760 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
5eef597e
MP		 2761 "KERNEL_USEC="USEC_FMT, kernel_usec,
2762 "INITRD_USEC="USEC_FMT, initrd_usec,
2763 "USERSPACE_USEC="USEC_FMT, userspace_usec,
f47781d8
MP		 2764 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2765 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2766 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2767 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2768 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
5eef597e 2769 NULL);
663996b3
MS		 2770 } else {
2771 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2772 initrd_usec = 0;
2773
663996b3 2774 log_struct(LOG_INFO,
f47781d8 2775 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
5eef597e 2776 "KERNEL_USEC="USEC_FMT, kernel_usec,
60f067b4 2777 "USERSPACE_USEC="USEC_FMT, userspace_usec,
f47781d8
MP		 2778 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2779 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2780 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2781 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
663996b3 2782 NULL);
5eef597e
MP		 2783 }
2784 } else {
2785 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2786 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2787
2788 log_struct(LOG_INFO,
f47781d8 2789 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
5eef597e 2790 "USERSPACE_USEC="USEC_FMT, userspace_usec,
f47781d8
MP		 2791 LOG_MESSAGE("Startup finished in %s.",
2792 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
5eef597e 2793 NULL);
663996b3
MS		 2794 }
2795
60f067b4 2796 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
663996b3
MS		 2797
2798 sd_notifyf(false,
5eef597e
MP		 2799 "READY=1\n"
2800 "STATUS=Startup finished in %s.",
663996b3
MS		 2801 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2802}
2803
f47781d8 2804void manager_check_finished(Manager *m) {
f47781d8
MP		 2805 assert(m);
2806
aa27b158 2807 if (MANAGER_IS_RELOADING(m))
e3bff60a
MP		 2808 return;
2809
2810 /* Verify that we are actually running currently. Initially
2811 * the exit code is set to invalid, and during operation it is
2812 * then set to MANAGER_OK */
2813 if (m->exit_code != MANAGER_OK)
2814 return;
2815
f47781d8 2816 if (hashmap_size(m->jobs) > 0) {
f47781d8 2817 if (m->jobs_in_progress_event_source)
e3bff60a 2818 /* Ignore any failure, this is only for feedback */
6300502b 2819 (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
f47781d8
MP		 2820
2821 return;
2822 }
2823
2824 manager_flip_auto_status(m, false);
2825
2826 /* Notify Type=idle units that we are done now */
f47781d8
MP		 2827 manager_close_idle_pipe(m);
2828
2829 /* Turn off confirm spawn now */
2830 m->confirm_spawn = false;
2831
2832 /* No need to update ask password status when we're going non-interactive */
2833 manager_close_ask_password(m);
2834
2835 /* This is no longer the first boot */
2836 manager_set_first_boot(m, false);
2837
2838 if (dual_timestamp_is_set(&m->finish_timestamp))
2839 return;
2840
2841 dual_timestamp_get(&m->finish_timestamp);
2842
2843 manager_notify_finished(m);
2844
6300502b 2845 manager_invalidate_startup_units(m);
f47781d8
MP		 2846}
2847
e735f4d4 2848static int manager_run_generators(Manager *m) {
e3bff60a 2849 _cleanup_strv_free_ char **paths = NULL;
663996b3 2850 const char *argv[5];
e735f4d4 2851 char **path;
663996b3
MS		 2852 int r;
2853
2854 assert(m);
2855
5eef597e 2856 if (m->test_run)
e735f4d4 2857 return 0;
663996b3 2858
aa27b158 2859 paths = generator_binary_paths(m->unit_file_scope);
e735f4d4
MP		 2860 if (!paths)
2861 return log_oom();
2862
2863 /* Optimize by skipping the whole process by not creating output directories
2864 * if no generators are found. */
2865 STRV_FOREACH(path, paths) {
aa27b158 2866 if (access(*path, F_OK) >= 0)
e735f4d4
MP		 2867 goto found;
2868 if (errno != ENOENT)
2869 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
663996b3 2870 }
aa27b158 2871
e735f4d4 2872 return 0;
663996b3 2873
e735f4d4 2874 found:
aa27b158 2875 r = lookup_paths_mkdir_generator(&m->lookup_paths);
663996b3
MS		 2876 if (r < 0)
2877 goto finish;
2878
2879 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
aa27b158
MP		 2880 argv[1] = m->lookup_paths.generator;
2881 argv[2] = m->lookup_paths.generator_early;
2882 argv[3] = m->lookup_paths.generator_late;
663996b3
MS		 2883 argv[4] = NULL;
2884
60f067b4 2885 RUN_WITH_UMASK(0022)
e735f4d4 2886 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
663996b3 2887
60f067b4 2888finish:
aa27b158 2889 lookup_paths_trim_generator(&m->lookup_paths);
e735f4d4 2890 return r;
663996b3
MS		 2891}
2892
60f067b4
JS		 2893int manager_environment_add(Manager *m, char **minus, char **plus) {
2894 char **a = NULL, **b = NULL, **l;
663996b3
MS		 2895 assert(m);
2896
60f067b4 2897 l = m->environment;
663996b3 2898
60f067b4
JS		 2899 if (!strv_isempty(minus)) {
2900 a = strv_env_delete(l, 1, minus);
2901 if (!a)
2902 return -ENOMEM;
2903
2904 l = a;
2905 }
2906
2907 if (!strv_isempty(plus)) {
2908 b = strv_env_merge(2, l, plus);
5eef597e
MP		 2909 if (!b) {
2910 strv_free(a);
60f067b4 2911 return -ENOMEM;
5eef597e 2912 }
60f067b4
JS		 2913
2914 l = b;
2915 }
2916
2917 if (m->environment != l)
2918 strv_free(m->environment);
2919 if (a != l)
2920 strv_free(a);
2921 if (b != l)
2922 strv_free(b);
2923
2924 m->environment = l;
2925 manager_clean_environment(m);
2926 strv_sort(m->environment);
663996b3
MS		 2927
2928 return 0;
2929}
2930
2931int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2932 int i;
2933
2934 assert(m);
2935
60f067b4 2936 for (i = 0; i < _RLIMIT_MAX; i++) {
4c89c718
MP		 2937 m->rlimit[i] = mfree(m->rlimit[i]);
2938
663996b3
MS		 2939 if (!default_rlimit[i])
2940 continue;
2941
2942 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2943 if (!m->rlimit[i])
2944 return -ENOMEM;
2945 }
2946
2947 return 0;
2948}
2949
2950void manager_recheck_journal(Manager *m) {
2951 Unit *u;
2952
2953 assert(m);
2954
aa27b158 2955 if (!MANAGER_IS_SYSTEM(m))
663996b3
MS		 2956 return;
2957
2958 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2959 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2960 log_close_journal();
2961 return;
2962 }
2963
2964 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2965 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2966 log_close_journal();
2967 return;
2968 }
2969
2970 /* Hmm, OK, so the socket is fully up and the service is up
2971 * too, then let's make use of the thing. */
2972 log_open();
2973}
2974
60f067b4 2975void manager_set_show_status(Manager *m, ShowStatus mode) {
663996b3 2976 assert(m);
60f067b4 2977 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
663996b3 2978
aa27b158 2979 if (!MANAGER_IS_SYSTEM(m))
663996b3
MS		 2980 return;
2981
4c89c718
MP		 2982 if (m->show_status != mode)
2983 log_debug("%s showing of status.",
2984 mode == SHOW_STATUS_NO ? "Disabling" : "Enabling");
60f067b4 2985 m->show_status = mode;
663996b3 2986
60f067b4 2987 if (mode > 0)
db2df898 2988 (void) touch("/run/systemd/show-status");
663996b3 2989 else
db2df898 2990 (void) unlink("/run/systemd/show-status");
663996b3
MS		 2991}
2992
5eef597e 2993static bool manager_get_show_status(Manager *m, StatusType type) {
663996b3
MS		 2994 assert(m);
2995
aa27b158 2996 if (!MANAGER_IS_SYSTEM(m))
663996b3
MS		 2997 return false;
2998
14228c0d
MB		 2999 if (m->no_console_output)
3000 return false;
3001
5eef597e
MP		 3002 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
3003 return false;
3004
3005 /* If we cannot find out the status properly, just proceed. */
3006 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
60f067b4
JS		 3007 return false;
3008
3009 if (m->show_status > 0)
663996b3
MS		 3010 return true;
3011
e3bff60a 3012 return false;
663996b3
MS		 3013}
3014
5eef597e
MP		 3015void manager_set_first_boot(Manager *m, bool b) {
3016 assert(m);
3017
aa27b158 3018 if (!MANAGER_IS_SYSTEM(m))
5eef597e
MP		 3019 return;
3020
d9dfd233
MP		 3021 if (m->first_boot != (int) b) {
3022 if (b)
3023 (void) touch("/run/systemd/first-boot");
3024 else
3025 (void) unlink("/run/systemd/first-boot");
3026 }
5eef597e 3027
d9dfd233 3028 m->first_boot = b;
5eef597e
MP		 3029}
3030
3031void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
663996b3
MS		 3032 va_list ap;
3033
f47781d8
MP		 3034 /* If m is NULL, assume we're after shutdown and let the messages through. */
3035
3036 if (m && !manager_get_show_status(m, type))
663996b3
MS		 3037 return;
3038
3039 /* XXX We should totally drop the check for ephemeral here
3040 * and thus effectively make 'Type=idle' pointless. */
f47781d8 3041 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
663996b3
MS		 3042 return;
3043
663996b3 3044 va_start(ap, format);
5eef597e 3045 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
663996b3
MS		 3046 va_end(ap);
3047}
3048
14228c0d
MB		 3049Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3050 char p[strlen(path)+1];
3051
3052 assert(m);
3053 assert(path);
3054
3055 strcpy(p, path);
3056 path_kill_slashes(p);
3057
3058 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3059}
3060
60f067b4
JS		 3061const char *manager_get_runtime_prefix(Manager *m) {
3062 assert(m);
3063
aa27b158 3064 return MANAGER_IS_SYSTEM(m) ?
60f067b4
JS		 3065 "/run" :
3066 getenv("XDG_RUNTIME_DIR");
3067}
3068
6300502b 3069int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
e3bff60a 3070 unsigned size;
6300502b 3071 int r;
e3bff60a
MP		 3072
3073 assert(m);
3074 assert(u->manager == m);
3075
3076 size = set_size(m->failed_units);
3077
3078 if (failed) {
6300502b
MP		 3079 r = set_ensure_allocated(&m->failed_units, NULL);
3080 if (r < 0)
3081 return log_oom();
3082
e3bff60a 3083 if (set_put(m->failed_units, u) < 0)
6300502b 3084 return log_oom();
e3bff60a 3085 } else
6300502b 3086 (void) set_remove(m->failed_units, u);
e3bff60a
MP		 3087
3088 if (set_size(m->failed_units) != size)
3089 bus_manager_send_change_signal(m);
6300502b
MP		 3090
3091 return 0;
e3bff60a
MP		 3092}
3093
60f067b4
JS		 3094ManagerState manager_state(Manager *m) {
3095 Unit *u;
3096
3097 assert(m);
3098
3099 /* Did we ever finish booting? If not then we are still starting up */
5eef597e
MP		 3100 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3101
3102 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3103 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3104 return MANAGER_INITIALIZING;
3105
60f067b4 3106 return MANAGER_STARTING;
5eef597e 3107 }
663996b3 3108
60f067b4
JS		 3109 /* Is the special shutdown target queued? If so, we are in shutdown state */
3110 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
4c89c718 3111 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))
60f067b4
JS		 3112 return MANAGER_STOPPING;
3113
3114 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3115 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3116 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
4c89c718 3117 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
60f067b4
JS		 3118 return MANAGER_MAINTENANCE;
3119
3120 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3121 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
4c89c718 3122 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START))))
60f067b4
JS		 3123 return MANAGER_MAINTENANCE;
3124
3125 /* Are there any failed units? If so, we are in degraded mode */
3126 if (set_size(m->failed_units) > 0)
3127 return MANAGER_DEGRADED;
3128
3129 return MANAGER_RUNNING;
663996b3 3130}
60f067b4
JS		 3131
3132static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
5eef597e 3133 [MANAGER_INITIALIZING] = "initializing",
60f067b4
JS		 3134 [MANAGER_STARTING] = "starting",
3135 [MANAGER_RUNNING] = "running",
3136 [MANAGER_DEGRADED] = "degraded",
3137 [MANAGER_MAINTENANCE] = "maintenance",
3138 [MANAGER_STOPPING] = "stopping",
3139};
3140
3141DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
systemd for Proxmox projects