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core: fix type of NetClass dbus property
[thirdparty/systemd.git] / src / core / manager.c
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d6c9574f 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
60918275 2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
a7334b09
LP		 11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 16 Lesser General Public License for more details.
a7334b09 17
5430f7f2 18 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
400f1a33 22#include <dirent.h>
60918275 23#include <errno.h>
400f1a33
LP		 24#include <fcntl.h>
25#include <linux/kd.h>
9152c765 26#include <signal.h>
400f1a33 27#include <string.h>
e46b13c8 28#include <sys/epoll.h>
400f1a33 29#include <sys/inotify.h>
e1414003 30#include <sys/ioctl.h>
400f1a33 31#include <sys/reboot.h>
8742514c 32#include <sys/timerfd.h>
400f1a33
LP		 33#include <sys/wait.h>
34#include <unistd.h>
830f6caa
LP		 35
36#ifdef HAVE_AUDIT
4927fcae 37#include <libaudit.h>
830f6caa 38#endif
60918275 39
718db961 40#include "sd-daemon.h"
718db961 41#include "sd-messages.h"
81527be1 42
400f1a33
LP		 43#include "audit-fd.h"
44#include "boot-timestamps.h"
45#include "bus-common-errors.h"
46#include "bus-error.h"
47#include "bus-kernel.h"
48#include "bus-util.h"
49#include "dbus-job.h"
50#include "dbus-manager.h"
51#include "dbus-unit.h"
52#include "dbus.h"
53#include "env-util.h"
54#include "exit-status.h"
60918275 55#include "hashmap.h"
400f1a33 56#include "locale-setup.h"
16354eff 57#include "log.h"
400f1a33
LP		 58#include "macro.h"
59#include "missing.h"
49e942b2 60#include "mkdir.h"
400f1a33
LP		 61#include "path-lookup.h"
62#include "path-util.h"
63#include "process-util.h"
ea430986 64#include "ratelimit.h"
c6878637 65#include "rm-rf.h"
400f1a33 66#include "signal-util.h"
514f4ef5 67#include "special.h"
400f1a33
LP		 68#include "strv.h"
69#include "terminal-util.h"
70#include "time-util.h"
71#include "transaction.h"
72#include "unit-name.h"
73#include "util.h"
5dc4c17f 74#include "virt.h"
e96d6be7 75#include "watchdog.h"
24882e06 76#include "manager.h"
60918275 77
03b717a3 78/* Initial delay and the interval for printing status messages about running jobs */
fd08a840
ZJS		 79#define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
80#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
03b717a3
MS		 81#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
82
718db961
LP		 83static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
84static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
85static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
86static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
87static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
752b5905 88static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
e801700e
ZJS		 89static int manager_run_generators(Manager *m);
90static void manager_undo_generators(Manager *m);
718db961 91
2ae56591 92static void manager_watch_jobs_in_progress(Manager *m) {
e5723c89 93 usec_t next;
cfa9677b 94 int r;
e5723c89 95
718db961 96 assert(m);
03b717a3 97
718db961 98 if (m->jobs_in_progress_event_source)
2ae56591 99 return;
03b717a3 100
e5723c89 101 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
cfa9677b 102 r = sd_event_add_time(
6a0f1f6d
LP		 103 m->event,
104 &m->jobs_in_progress_event_source,
105 CLOCK_MONOTONIC,
106 next, 0,
107 manager_dispatch_jobs_in_progress, m);
cfa9677b
MM		 108 if (r < 0)
109 return;
7dfbe2e3
TG		 110
111 (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress");
03b717a3
MS		 112}
113
1fc464f6 114#define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1))
03b717a3 115
03b717a3
MS		 116static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
117 char *p = buffer;
118
119 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
120 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
121
122 if (pos > 1) {
6282c859
MS		 123 if (pos > 2)
124 p = mempset(p, ' ', pos-2);
1fc464f6 125 p = stpcpy(p, ANSI_RED);
03b717a3
MS		 126 *p++ = '*';
127 }
128
129 if (pos > 0 && pos <= width) {
1fc464f6 130 p = stpcpy(p, ANSI_HIGHLIGHT_RED);
03b717a3
MS		 131 *p++ = '*';
132 }
133
1fc464f6 134 p = stpcpy(p, ANSI_NORMAL);
03b717a3
MS		 135
136 if (pos < width) {
1fc464f6 137 p = stpcpy(p, ANSI_RED);
03b717a3 138 *p++ = '*';
6282c859
MS		 139 if (pos < width-1)
140 p = mempset(p, ' ', width-1-pos);
1fc464f6 141 strcpy(p, ANSI_NORMAL);
03b717a3 142 }
03b717a3
MS		 143}
144
cb8ccb22 145void manager_flip_auto_status(Manager *m, bool enable) {
f755e3b7
LP		 146 assert(m);
147
cb8ccb22
ZJS		 148 if (enable) {
149 if (m->show_status == SHOW_STATUS_AUTO)
150 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
151 } else {
152 if (m->show_status == SHOW_STATUS_TEMPORARY)
153 manager_set_show_status(m, SHOW_STATUS_AUTO);
154 }
155}
156
03b717a3 157static void manager_print_jobs_in_progress(Manager *m) {
718db961 158 _cleanup_free_ char *job_of_n = NULL;
03b717a3
MS		 159 Iterator i;
160 Job *j;
03b717a3
MS		 161 unsigned counter = 0, print_nr;
162 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
163 unsigned cylon_pos;
8bb310c3
ZJS		 164 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
165 uint64_t x;
03b717a3 166
718db961 167 assert(m);
9c3349e2 168 assert(m->n_running_jobs > 0);
718db961 169
cb8ccb22 170 manager_flip_auto_status(m, true);
d450b6f2 171
03b717a3
MS		 172 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
173
174 HASHMAP_FOREACH(j, m->jobs, i)
175 if (j->state == JOB_RUNNING && counter++ == print_nr)
176 break;
177
e970a72e
MS		 178 /* m->n_running_jobs must be consistent with the contents of m->jobs,
179 * so the above loop must have succeeded in finding j. */
180 assert(counter == print_nr + 1);
51d122af 181 assert(j);
5a82a91a 182
03b717a3
MS		 183 cylon_pos = m->jobs_in_progress_iteration % 14;
184 if (cylon_pos >= 8)
185 cylon_pos = 14 - cylon_pos;
186 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
187
8bb310c3
ZJS		 188 m->jobs_in_progress_iteration++;
189
d6483ba7
ZJS		 190 if (m->n_running_jobs > 1) {
191 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
192 job_of_n = NULL;
193 }
03b717a3 194
8bb310c3
ZJS		 195 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
196 if (job_get_timeout(j, &x) > 0)
197 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
198
127d5fd1 199 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
8bb310c3
ZJS		 200 "%sA %s job is running for %s (%s / %s)",
201 strempty(job_of_n),
202 job_type_to_string(j->type),
203 unit_description(j->unit),
204 time, limit);
03b717a3
MS		 205}
206
e46b13c8
ZJS		 207static int have_ask_password(void) {
208 _cleanup_closedir_ DIR *dir;
209
210 dir = opendir("/run/systemd/ask-password");
211 if (!dir) {
212 if (errno == ENOENT)
213 return false;
214 else
215 return -errno;
216 }
217
218 for (;;) {
219 struct dirent *de;
220
221 errno = 0;
222 de = readdir(dir);
223 if (!de && errno != 0)
224 return -errno;
225 if (!de)
226 return false;
227
228 if (startswith(de->d_name, "ask."))
229 return true;
230 }
231}
232
233static int manager_dispatch_ask_password_fd(sd_event_source *source,
234 int fd, uint32_t revents, void *userdata) {
235 Manager *m = userdata;
236
237 assert(m);
238
239 flush_fd(fd);
240
241 m->have_ask_password = have_ask_password();
242 if (m->have_ask_password < 0)
243 /* Log error but continue. Negative have_ask_password
244 * is treated as unknown status. */
c33b3297 245 log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m");
e46b13c8
ZJS		 246
247 return 0;
248}
249
250static void manager_close_ask_password(Manager *m) {
251 assert(m);
252
e46b13c8 253 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
90990e28 254 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
e46b13c8
ZJS		 255 m->have_ask_password = -EINVAL;
256}
257
258static int manager_check_ask_password(Manager *m) {
259 int r;
260
261 assert(m);
262
263 if (!m->ask_password_event_source) {
264 assert(m->ask_password_inotify_fd < 0);
265
266 mkdir_p_label("/run/systemd/ask-password", 0755);
267
268 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
4a62c710
MS		 269 if (m->ask_password_inotify_fd < 0)
270 return log_error_errno(errno, "inotify_init1() failed: %m");
e46b13c8
ZJS		 271
272 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
56f64d95 273 log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m");
e46b13c8
ZJS		 274 manager_close_ask_password(m);
275 return -errno;
276 }
277
278 r = sd_event_add_io(m->event, &m->ask_password_event_source,
279 m->ask_password_inotify_fd, EPOLLIN,
280 manager_dispatch_ask_password_fd, m);
281 if (r < 0) {
56f64d95 282 log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m");
e46b13c8
ZJS		 283 manager_close_ask_password(m);
284 return -errno;
285 }
286
7dfbe2e3
TG		 287 (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password");
288
e46b13c8
ZJS		 289 /* Queries might have been added meanwhile... */
290 manager_dispatch_ask_password_fd(m->ask_password_event_source,
291 m->ask_password_inotify_fd, EPOLLIN, m);
292 }
293
294 return m->have_ask_password;
295}
296
31a7eb86 297static int manager_watch_idle_pipe(Manager *m) {
31a7eb86
ZJS		 298 int r;
299
718db961
LP		 300 assert(m);
301
302 if (m->idle_pipe_event_source)
31a7eb86
ZJS		 303 return 0;
304
305 if (m->idle_pipe[2] < 0)
306 return 0;
307
151b9b96 308 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
23bbb0de
MS		 309 if (r < 0)
310 return log_error_errno(r, "Failed to watch idle pipe: %m");
31a7eb86 311
7dfbe2e3
TG		 312 (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe");
313
31a7eb86 314 return 0;
31a7eb86
ZJS		 315}
316
718db961
LP		 317static void manager_close_idle_pipe(Manager *m) {
318 assert(m);
31a7eb86 319
cd72bd8a
LP		 320 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
321
3d94f76c
LP		 322 safe_close_pair(m->idle_pipe);
323 safe_close_pair(m->idle_pipe + 2);
31a7eb86
ZJS		 324}
325
8742514c 326static int manager_setup_time_change(Manager *m) {
718db961 327 int r;
b92bea5d
ZJS		 328
329 /* We only care for the cancellation event, hence we set the
330 * timeout to the latest possible value. */
331 struct itimerspec its = {
332 .it_value.tv_sec = TIME_T_MAX,
333 };
8742514c 334
718db961
LP		 335 assert(m);
336 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
8742514c 337
0d8c31ff
ZJS		 338 if (m->test_run)
339 return 0;
340
8742514c
LP		 341 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
342 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
343
718db961 344 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
4a62c710
MS		 345 if (m->time_change_fd < 0)
346 return log_error_errno(errno, "Failed to create timerfd: %m");
8742514c 347
718db961 348 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
56f64d95 349 log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
03e334a1 350 m->time_change_fd = safe_close(m->time_change_fd);
8742514c
LP		 351 return 0;
352 }
353
151b9b96 354 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
23bbb0de
MS		 355 if (r < 0)
356 return log_error_errno(r, "Failed to create time change event source: %m");
8742514c 357
7dfbe2e3
TG		 358 (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change");
359
8742514c
LP		 360 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
361
362 return 0;
363}
364
80876c20 365static int enable_special_signals(Manager *m) {
718db961 366 _cleanup_close_ int fd = -1;
80876c20
LP		 367
368 assert(m);
369
a41b539e 370 /* Enable that we get SIGINT on control-alt-del. In containers
c9999773
LP		 371 * this will fail with EPERM (older) or EINVAL (newer), so
372 * ignore that. */
373 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
56f64d95 374 log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m");
80876c20 375
a41b539e
LP		 376 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
377 if (fd < 0) {
378 /* Support systems without virtual console */
379 if (fd != -ENOENT)
56f64d95 380 log_warning_errno(errno, "Failed to open /dev/tty0: %m");
a41b539e 381 } else {
80876c20
LP		 382 /* Enable that we get SIGWINCH on kbrequest */
383 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
56f64d95 384 log_warning_errno(errno, "Failed to enable kbrequest handling: %m");
80876c20
LP		 385 }
386
387 return 0;
388}
389
ce578209 390static int manager_setup_signals(Manager *m) {
b92bea5d
ZJS		 391 struct sigaction sa = {
392 .sa_handler = SIG_DFL,
393 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
394 };
718db961
LP		 395 sigset_t mask;
396 int r;
60918275 397
ce578209
LP		 398 assert(m);
399
57c0c30e
LP		 400 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
401
4dffec14
LP		 402 /* We make liberal use of realtime signals here. On
403 * Linux/glibc we have 30 of them (with the exception of Linux
404 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
405 * (aka SIGRTMAX). */
7d793605 406
4dffec14 407 assert_se(sigemptyset(&mask) == 0);
7d793605
LP		 408 sigset_add_many(&mask,
409 SIGCHLD, /* Child died */
410 SIGTERM, /* Reexecute daemon */
411 SIGHUP, /* Reload configuration */
412 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
413 SIGUSR2, /* systemd: dump status */
414 SIGINT, /* Kernel sends us this on control-alt-del */
415 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
416 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
4dffec14 417
7d793605 418 SIGRTMIN+0, /* systemd: start default.target */
0003d1ab 419 SIGRTMIN+1, /* systemd: isolate rescue.target */
7d793605
LP		 420 SIGRTMIN+2, /* systemd: isolate emergency.target */
421 SIGRTMIN+3, /* systemd: start halt.target */
422 SIGRTMIN+4, /* systemd: start poweroff.target */
423 SIGRTMIN+5, /* systemd: start reboot.target */
0003d1ab 424 SIGRTMIN+6, /* systemd: start kexec.target */
4dffec14
LP		 425
426 /* ... space for more special targets ... */
427
0003d1ab
LP		 428 SIGRTMIN+13, /* systemd: Immediate halt */
429 SIGRTMIN+14, /* systemd: Immediate poweroff */
430 SIGRTMIN+15, /* systemd: Immediate reboot */
431 SIGRTMIN+16, /* systemd: Immediate kexec */
4dffec14
LP		 432
433 /* ... space for more immediate system state changes ... */
434
0658666b
LP		 435 SIGRTMIN+20, /* systemd: enable status messages */
436 SIGRTMIN+21, /* systemd: disable status messages */
253ee27a
LP		 437 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
438 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
600b704e 439 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
4dffec14
LP		 440
441 /* .. one free signal here ... */
442
443#if !defined(__hppa64__) && !defined(__hppa__)
444 /* Apparently Linux on hppa has fewer RT
445 * signals (SIGRTMAX is SIGRTMIN+25 there),
446 * hence let's not try to make use of them
447 * here. Since these commands are accessible
448 * by different means and only really a safety
449 * net, the missing functionality on hppa
450 * shouldn't matter. */
451
4cfa2c99 452 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
253ee27a
LP		 453 SIGRTMIN+27, /* systemd: set log target to console */
454 SIGRTMIN+28, /* systemd: set log target to kmsg */
ee33e53a 455 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */
4dffec14
LP		 456
457 /* ... one free signal here SIGRTMIN+30 ... */
458#endif
7d793605 459 -1);
ce578209
LP		 460 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
461
718db961
LP		 462 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
463 if (m->signal_fd < 0)
ce578209
LP		 464 return -errno;
465
151b9b96 466 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
718db961
LP		 467 if (r < 0)
468 return r;
ce578209 469
7dfbe2e3
TG		 470 (void) sd_event_source_set_description(m->signal_event_source, "manager-signal");
471
fa28bc2d 472 /* Process signals a bit earlier than the rest of things, but
46849c3f 473 * later than notify_fd processing, so that the notify
fa28bc2d
LP		 474 * processing can still figure out to which process/service a
475 * message belongs, before we reap the process. */
29083707
LP		 476 r = sd_event_source_set_priority(m->signal_event_source, -5);
477 if (r < 0)
478 return r;
479
b2c23da8 480 if (m->running_as == MANAGER_SYSTEM)
80876c20 481 return enable_special_signals(m);
e1414003 482
ce578209
LP		 483 return 0;
484}
485
f069efb4
LP		 486static void manager_clean_environment(Manager *m) {
487 assert(m);
488
489 /* Let's remove some environment variables that we
490 * need ourselves to communicate with our clients */
491 strv_env_unset_many(
492 m->environment,
493 "NOTIFY_SOCKET",
494 "MAINPID",
495 "MANAGERPID",
496 "LISTEN_PID",
497 "LISTEN_FDS",
8dd4c05b 498 "LISTEN_FDNAMES",
f069efb4
LP		 499 "WATCHDOG_PID",
500 "WATCHDOG_USEC",
501 NULL);
502}
503
e21fea24 504static int manager_default_environment(Manager *m) {
71ecc858
LP		 505 assert(m);
506
b2c23da8 507 if (m->running_as == MANAGER_SYSTEM) {
e21fea24
KS		 508 /* The system manager always starts with a clean
509 * environment for its children. It does not import
510 * the kernel or the parents exported variables.
511 *
512 * The initial passed environ is untouched to keep
513 * /proc/self/environ valid; it is used for tagging
514 * the init process inside containers. */
43638332
ZJS		 515 m->environment = strv_new("PATH=" DEFAULT_PATH,
516 NULL);
e21fea24
KS		 517
518 /* Import locale variables LC_*= from configuration */
519 locale_setup(&m->environment);
43d03a83 520 } else {
e21fea24
KS		 521 /* The user manager passes its own environment
522 * along to its children. */
523 m->environment = strv_copy(environ);
43d03a83
LP		 524 }
525
e21fea24
KS		 526 if (!m->environment)
527 return -ENOMEM;
8b55b8c4 528
f069efb4 529 manager_clean_environment(m);
9d5a3757
LP		 530 strv_sort(m->environment);
531
e21fea24 532 return 0;
71ecc858
LP		 533}
534
f2341e0a 535
b2c23da8 536int manager_new(ManagerRunningAs running_as, bool test_run, Manager **_m) {
f2341e0a 537
b2c23da8
LP		 538 static const char * const unit_log_fields[_MANAGER_RUNNING_AS_MAX] = {
539 [MANAGER_SYSTEM] = "UNIT=",
540 [MANAGER_USER] = "USER_UNIT=",
f2341e0a
LP		 541 };
542
b2c23da8
LP		 543 static const char * const unit_log_format_strings[_MANAGER_RUNNING_AS_MAX] = {
544 [MANAGER_SYSTEM] = "UNIT=%s",
545 [MANAGER_USER] = "USER_UNIT=%s",
f2341e0a
LP		 546 };
547
ce578209 548 Manager *m;
e3dd987c 549 int r;
8e274523
LP		 550
551 assert(_m);
a5dab5ce 552 assert(running_as >= 0);
b2c23da8 553 assert(running_as < _MANAGER_RUNNING_AS_MAX);
ce578209 554
915b3753
LP		 555 m = new0(Manager, 1);
556 if (!m)
8e274523 557 return -ENOMEM;
60918275 558
4f8d551f 559#ifdef ENABLE_EFI
75f86906 560 if (running_as == MANAGER_SYSTEM && detect_container() <= 0)
c51d84dc 561 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
4f8d551f
ZC		 562#endif
563
a5dab5ce 564 m->running_as = running_as;
a16e1123 565 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
bd8f585b 566 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
80876c20 567
f2341e0a
LP		 568 /* Prepare log fields we can use for structured logging */
569 m->unit_log_field = unit_log_fields[running_as];
570 m->unit_log_format_string = unit_log_format_strings[running_as];
571
718db961 572 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
8742514c 573
efdb0237 574 m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd =
d379d442
KZ		 575 m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd = -1;
576
ea430986 577 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
9152c765 578
e46b13c8
ZJS		 579 m->ask_password_inotify_fd = -1;
580 m->have_ask_password = -EINVAL; /* we don't know */
ae2a2c53 581 m->first_boot = -1;
e46b13c8 582
32ee7d33
DM		 583 m->cgroup_netclass_registry_last = CGROUP_NETCLASS_FIXED_MAX;
584
0d8c31ff
ZJS		 585 m->test_run = test_run;
586
2e5c94b9
LP		 587 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
588 RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
589
e21fea24
KS		 590 r = manager_default_environment(m);
591 if (r < 0)
1137a57c
LP		 592 goto fail;
593
d5099efc 594 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
718db961 595 if (r < 0)
60918275
LP		 596 goto fail;
597
d5099efc 598 r = hashmap_ensure_allocated(&m->jobs, NULL);
718db961 599 if (r < 0)
60918275
LP		 600 goto fail;
601
d5099efc 602 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
718db961 603 if (r < 0)
9152c765
LP		 604 goto fail;
605
d5099efc 606 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
718db961 607 if (r < 0)
05e343b7
LP		 608 goto fail;
609
718db961
LP		 610 r = sd_event_default(&m->event);
611 if (r < 0)
8742514c
LP		 612 goto fail;
613
151b9b96 614 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
752b5905
LP		 615 if (r < 0)
616 goto fail;
617
618 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
619 if (r < 0)
620 goto fail;
621
622 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
623 if (r < 0)
624 goto fail;
625
7dfbe2e3
TG		 626 (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue");
627
8742514c
LP		 628 r = manager_setup_signals(m);
629 if (r < 0)
9152c765
LP		 630 goto fail;
631
8742514c
LP		 632 r = manager_setup_cgroup(m);
633 if (r < 0)
8e274523
LP		 634 goto fail;
635
8742514c
LP		 636 r = manager_setup_time_change(m);
637 if (r < 0)
8c47c732
LP		 638 goto fail;
639
9670d583
LP		 640 m->udev = udev_new();
641 if (!m->udev) {
642 r = -ENOMEM;
643 goto fail;
644 }
645
d86f9d52
LP		 646 /* Note that we set up neither kdbus, nor the notify fd
647 * here. We do that after deserialization, since they might
648 * have gotten serialized across the reexec. */
649
72bc8d00
LP		 650 m->taint_usr = dir_is_empty("/usr") > 0;
651
8e274523
LP		 652 *_m = m;
653 return 0;
60918275
LP		 654
655fail:
656 manager_free(m);
8e274523 657 return r;
60918275
LP		 658}
659
d86f9d52 660static int manager_setup_notify(Manager *m) {
7181dbdb 661 int r;
d86f9d52 662
0d8c31ff
ZJS		 663 if (m->test_run)
664 return 0;
665
d86f9d52
LP		 666 if (m->notify_fd < 0) {
667 _cleanup_close_ int fd = -1;
920b52e4 668 union sockaddr_union sa = {
7181dbdb
LP		 669 .sa.sa_family = AF_UNIX,
670 };
55836941 671 static const int one = 1;
d86f9d52
LP		 672
673 /* First free all secondary fields */
a1e58e8e 674 m->notify_socket = mfree(m->notify_socket);
d86f9d52
LP		 675 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
676
677 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
4a62c710
MS		 678 if (fd < 0)
679 return log_error_errno(errno, "Failed to allocate notification socket: %m");
d86f9d52 680
b2c23da8 681 if (m->running_as == MANAGER_SYSTEM)
7181dbdb 682 m->notify_socket = strdup("/run/systemd/notify");
498e87d6 683 else {
7181dbdb 684 const char *e;
d86f9d52 685
7181dbdb
LP		 686 e = getenv("XDG_RUNTIME_DIR");
687 if (!e) {
56f64d95 688 log_error_errno(errno, "XDG_RUNTIME_DIR is not set: %m");
7181dbdb
LP		 689 return -EINVAL;
690 }
691
692 m->notify_socket = strappend(e, "/systemd/notify");
693 }
498e87d6
LP		 694 if (!m->notify_socket)
695 return log_oom();
696
697 (void) mkdir_parents_label(m->notify_socket, 0755);
f0e62e89 698 (void) unlink(m->notify_socket);
7181dbdb
LP		 699
700 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
701 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
4a62c710
MS		 702 if (r < 0)
703 return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path);
d86f9d52
LP		 704
705 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
4a62c710
MS		 706 if (r < 0)
707 return log_error_errno(errno, "SO_PASSCRED failed: %m");
d86f9d52 708
d86f9d52
LP		 709 m->notify_fd = fd;
710 fd = -1;
711
712 log_debug("Using notification socket %s", m->notify_socket);
713 }
714
715 if (!m->notify_event_source) {
151b9b96 716 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
895b3a7b
MS		 717 if (r < 0)
718 return log_error_errno(r, "Failed to allocate notify event source: %m");
d86f9d52
LP		 719
720 /* Process signals a bit earlier than SIGCHLD, so that we can
721 * still identify to which service an exit message belongs */
722 r = sd_event_source_set_priority(m->notify_event_source, -7);
23bbb0de
MS		 723 if (r < 0)
724 return log_error_errno(r, "Failed to set priority of notify event source: %m");
7dfbe2e3
TG		 725
726 (void) sd_event_source_set_description(m->notify_event_source, "manager-notify");
d86f9d52
LP		 727 }
728
729 return 0;
730}
731
732static int manager_setup_kdbus(Manager *m) {
733 _cleanup_free_ char *p = NULL;
734
735 assert(m);
736
0d8c31ff 737 if (m->test_run || m->kdbus_fd >= 0)
d86f9d52 738 return 0;
d79acc30
DH		 739 if (!is_kdbus_available())
740 return -ESOCKTNOSUPPORT;
d86f9d52 741
1a299299 742 m->kdbus_fd = bus_kernel_create_bus(
b2c23da8
LP		 743 m->running_as == MANAGER_SYSTEM ? "system" : "user",
744 m->running_as == MANAGER_SYSTEM, &p);
1a299299 745
eb56eb9b
MS		 746 if (m->kdbus_fd < 0)
747 return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m");
d86f9d52
LP		 748
749 log_debug("Successfully set up kdbus on %s", p);
d86f9d52
LP		 750
751 return 0;
752}
753
754static int manager_connect_bus(Manager *m, bool reexecuting) {
755 bool try_bus_connect;
756
757 assert(m);
758
0d8c31ff
ZJS		 759 if (m->test_run)
760 return 0;
761
d86f9d52
LP		 762 try_bus_connect =
763 m->kdbus_fd >= 0 ||
764 reexecuting ||
b2c23da8 765 (m->running_as == MANAGER_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
d86f9d52 766
ff9b60f3 767 /* Try to connect to the buses, if possible. */
d86f9d52
LP		 768 return bus_init(m, try_bus_connect);
769}
770
23a177ef 771static unsigned manager_dispatch_cleanup_queue(Manager *m) {
595ed347 772 Unit *u;
23a177ef
LP		 773 unsigned n = 0;
774
775 assert(m);
776
595ed347
MS		 777 while ((u = m->cleanup_queue)) {
778 assert(u->in_cleanup_queue);
23a177ef 779
595ed347 780 unit_free(u);
23a177ef
LP		 781 n++;
782 }
783
784 return n;
785}
786
eced69b3 787enum {
35b8ca3a 788 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
eced69b3
LP		 789 GC_OFFSET_UNSURE, /* No clue */
790 GC_OFFSET_GOOD, /* We still need this unit */
791 GC_OFFSET_BAD, /* We don't need this unit anymore */
792 _GC_OFFSET_MAX
793};
794
795static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
701cc384
LP		 796 Iterator i;
797 Unit *other;
eced69b3 798 bool is_bad;
701cc384
LP		 799
800 assert(u);
801
ac155bb8
MS		 802 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
803 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
804 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
701cc384
LP		 805 return;
806
ac155bb8 807 if (u->in_cleanup_queue)
701cc384
LP		 808 goto bad;
809
810 if (unit_check_gc(u))
811 goto good;
812
ac155bb8 813 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
eced69b3
LP		 814
815 is_bad = true;
816
ac155bb8 817 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
701cc384
LP		 818 unit_gc_sweep(other, gc_marker);
819
ac155bb8 820 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
701cc384 821 goto good;
eced69b3 822
ac155bb8 823 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
eced69b3 824 is_bad = false;
701cc384
LP		 825 }
826
eced69b3
LP		 827 if (is_bad)
828 goto bad;
829
830 /* We were unable to find anything out about this entry, so
831 * let's investigate it later */
ac155bb8 832 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
eced69b3
LP		 833 unit_add_to_gc_queue(u);
834 return;
835
701cc384 836bad:
eced69b3
LP		 837 /* We definitely know that this one is not useful anymore, so
838 * let's mark it for deletion */
ac155bb8 839 u->gc_marker = gc_marker + GC_OFFSET_BAD;
eced69b3 840 unit_add_to_cleanup_queue(u);
701cc384
LP		 841 return;
842
843good:
ac155bb8 844 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
701cc384
LP		 845}
846
847static unsigned manager_dispatch_gc_queue(Manager *m) {
595ed347 848 Unit *u;
701cc384 849 unsigned n = 0;
eced69b3 850 unsigned gc_marker;
701cc384
LP		 851
852 assert(m);
853
cf1265e1 854 /* log_debug("Running GC..."); */
701cc384 855
eced69b3
LP		 856 m->gc_marker += _GC_OFFSET_MAX;
857 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
c9c0cadb 858 m->gc_marker = 1;
701cc384 859
eced69b3
LP		 860 gc_marker = m->gc_marker;
861
595ed347
MS		 862 while ((u = m->gc_queue)) {
863 assert(u->in_gc_queue);
701cc384 864
595ed347 865 unit_gc_sweep(u, gc_marker);
eced69b3 866
71fda00f 867 LIST_REMOVE(gc_queue, m->gc_queue, u);
595ed347 868 u->in_gc_queue = false;
701cc384
LP		 869
870 n++;
871
595ed347
MS		 872 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
873 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
cc3bc3e6 874 if (u->id)
f2341e0a 875 log_unit_debug(u, "Collecting.");
595ed347
MS		 876 u->gc_marker = gc_marker + GC_OFFSET_BAD;
877 unit_add_to_cleanup_queue(u);
701cc384
LP		 878 }
879 }
880
881 m->n_in_gc_queue = 0;
701cc384
LP		 882
883 return n;
884}
885
a16e1123 886static void manager_clear_jobs_and_units(Manager *m) {
a16e1123 887 Unit *u;
60918275
LP		 888
889 assert(m);
890
87f0e418
LP		 891 while ((u = hashmap_first(m->units)))
892 unit_free(u);
964e0949
LP		 893
894 manager_dispatch_cleanup_queue(m);
895
896 assert(!m->load_queue);
897 assert(!m->run_queue);
898 assert(!m->dbus_unit_queue);
899 assert(!m->dbus_job_queue);
900 assert(!m->cleanup_queue);
901 assert(!m->gc_queue);
902
964e0949
LP		 903 assert(hashmap_isempty(m->jobs));
904 assert(hashmap_isempty(m->units));
9e9e2b72
MS		 905
906 m->n_on_console = 0;
907 m->n_running_jobs = 0;
a16e1123
LP		 908}
909
06d8d842 910Manager* manager_free(Manager *m) {
a16e1123 911 UnitType c;
c93ff2e9 912 int i;
87f0e418 913
06d8d842
ZJS		 914 if (!m)
915 return NULL;
a16e1123
LP		 916
917 manager_clear_jobs_and_units(m);
23a177ef 918
7824bbeb
LP		 919 for (c = 0; c < _UNIT_TYPE_MAX; c++)
920 if (unit_vtable[c]->shutdown)
921 unit_vtable[c]->shutdown(m);
922
a16e1123
LP		 923 /* If we reexecute ourselves, we keep the root cgroup
924 * around */
c6c18be3 925 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
8e274523 926
5a1e9937
LP		 927 manager_undo_generators(m);
928
5e8d1c9a 929 bus_done(m);
ea430986 930
87f0e418 931 hashmap_free(m->units);
60918275 932 hashmap_free(m->jobs);
5ba6985b
LP		 933 hashmap_free(m->watch_pids1);
934 hashmap_free(m->watch_pids2);
05e343b7 935 hashmap_free(m->watch_bus);
9152c765 936
95ae05c0 937 set_free(m->startup_units);
f755e3b7
LP		 938 set_free(m->failed_units);
939
718db961
LP		 940 sd_event_source_unref(m->signal_event_source);
941 sd_event_source_unref(m->notify_event_source);
942 sd_event_source_unref(m->time_change_event_source);
943 sd_event_source_unref(m->jobs_in_progress_event_source);
752b5905 944 sd_event_source_unref(m->run_queue_event_source);
718db961 945
03e334a1
LP		 946 safe_close(m->signal_fd);
947 safe_close(m->notify_fd);
948 safe_close(m->time_change_fd);
949 safe_close(m->kdbus_fd);
718db961 950
e46b13c8
ZJS		 951 manager_close_ask_password(m);
952
718db961
LP		 953 manager_close_idle_pipe(m);
954
9670d583 955 udev_unref(m->udev);
718db961 956 sd_event_unref(m->event);
60918275 957
c952c6ec
LP		 958 free(m->notify_socket);
959
84e3543e 960 lookup_paths_free(&m->lookup_paths);
1137a57c 961 strv_free(m->environment);
036643a2 962
4ad49000 963 hashmap_free(m->cgroup_unit);
c6c18be3 964 set_free_free(m->unit_path_cache);
33be102a 965
32ee7d33
DM		 966 hashmap_free(m->cgroup_netclass_registry);
967
664f88a7
LP		 968 free(m->switch_root);
969 free(m->switch_root_init);
970
517d56b1 971 for (i = 0; i < _RLIMIT_MAX; i++)
c93ff2e9
FC		 972 free(m->rlimit[i]);
973
a57f7e2c
LP		 974 assert(hashmap_isempty(m->units_requiring_mounts_for));
975 hashmap_free(m->units_requiring_mounts_for);
976
60918275 977 free(m);
06d8d842 978 return NULL;
60918275
LP		 979}
980
a16e1123 981int manager_enumerate(Manager *m) {
0faacd47 982 int r = 0;
f50e0a01 983 UnitType c;
f50e0a01
LP		 984
985 assert(m);
986
a16e1123
LP		 987 /* Let's ask every type to load all units from disk/kernel
988 * that it might know */
0faacd47
LP		 989 for (c = 0; c < _UNIT_TYPE_MAX; c++) {
990 int q;
991
1c2e9646 992 if (!unit_type_supported(c)) {
03afec3c 993 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c));
0faacd47 994 continue;
a57f7e2c 995 }
f50e0a01 996
0faacd47
LP		 997 if (!unit_vtable[c]->enumerate)
998 continue;
999
1000 q = unit_vtable[c]->enumerate(m);
1001 if (q < 0)
1002 r = q;
1003 }
1004
f50e0a01 1005 manager_dispatch_load_queue(m);
a16e1123
LP		 1006 return r;
1007}
1008
007c6337 1009static void manager_coldplug(Manager *m) {
a16e1123
LP		 1010 Iterator i;
1011 Unit *u;
1012 char *k;
007c6337 1013 int r;
a16e1123
LP		 1014
1015 assert(m);
f50e0a01
LP		 1016
1017 /* Then, let's set up their initial state. */
1018 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1019
1020 /* ignore aliases */
ac155bb8 1021 if (u->id != k)
f50e0a01
LP		 1022 continue;
1023
007c6337
LP		 1024 r = unit_coldplug(u);
1025 if (r < 0)
1026 log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id);
f50e0a01 1027 }
a16e1123
LP		 1028}
1029
fe51822e
LP		 1030static void manager_build_unit_path_cache(Manager *m) {
1031 char **i;
807d0cca 1032 _cleanup_closedir_ DIR *d = NULL;
fe51822e
LP		 1033 int r;
1034
1035 assert(m);
1036
1037 set_free_free(m->unit_path_cache);
1038
d5099efc 1039 m->unit_path_cache = set_new(&string_hash_ops);
874310b7 1040 if (!m->unit_path_cache) {
fe51822e
LP		 1041 log_error("Failed to allocate unit path cache.");
1042 return;
1043 }
1044
1045 /* This simply builds a list of files we know exist, so that
1046 * we don't always have to go to disk */
1047
1048 STRV_FOREACH(i, m->lookup_paths.unit_path) {
1049 struct dirent *de;
1050
bd0af849
ZJS		 1051 d = opendir(*i);
1052 if (!d) {
874310b7 1053 if (errno != ENOENT)
56f64d95 1054 log_error_errno(errno, "Failed to open directory %s: %m", *i);
fe51822e
LP		 1055 continue;
1056 }
1057
1058 while ((de = readdir(d))) {
1059 char *p;
1060
a34bf9db 1061 if (hidden_file(de->d_name))
fe51822e
LP		 1062 continue;
1063
b7def684 1064 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
44d91056 1065 if (!p) {
fe51822e
LP		 1066 r = -ENOMEM;
1067 goto fail;
1068 }
1069
ef42202a
ZJS		 1070 r = set_consume(m->unit_path_cache, p);
1071 if (r < 0)
fe51822e 1072 goto fail;
fe51822e
LP		 1073 }
1074
ed0d4022 1075 d = safe_closedir(d);
fe51822e
LP		 1076 }
1077
1078 return;
1079
1080fail:
da927ba9 1081 log_error_errno(r, "Failed to build unit path cache: %m");
fe51822e
LP		 1082
1083 set_free_free(m->unit_path_cache);
1084 m->unit_path_cache = NULL;
fe51822e
LP		 1085}
1086
9588bc32
LP		 1087
1088static int manager_distribute_fds(Manager *m, FDSet *fds) {
1089 Unit *u;
1090 Iterator i;
1091 int r;
1092
1093 assert(m);
1094
1095 HASHMAP_FOREACH(u, m->units, i) {
1096
1097 if (fdset_size(fds) <= 0)
1098 break;
1099
1100 if (UNIT_VTABLE(u)->distribute_fds) {
1101 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1102 if (r < 0)
1103 return r;
1104 }
1105 }
1106
1107 return 0;
1108}
1109
a16e1123
LP		 1110int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1111 int r, q;
1112
1113 assert(m);
1114
518d10e9 1115 dual_timestamp_get(&m->generators_start_timestamp);
e801700e 1116 r = manager_run_generators(m);
518d10e9 1117 dual_timestamp_get(&m->generators_finish_timestamp);
e801700e
ZJS		 1118 if (r < 0)
1119 return r;
5a1e9937 1120
07719a21
LP		 1121 r = lookup_paths_init(
1122 &m->lookup_paths, m->running_as, true,
12ed81d9 1123 NULL,
07719a21
LP		 1124 m->generator_unit_path,
1125 m->generator_unit_path_early,
1126 m->generator_unit_path_late);
1127 if (r < 0)
1128 return r;
1129
fe51822e
LP		 1130 manager_build_unit_path_cache(m);
1131
9f611ad8
LP		 1132 /* If we will deserialize make sure that during enumeration
1133 * this is already known, so we increase the counter here
1134 * already */
1135 if (serialization)
a7556052 1136 m->n_reloading ++;
9f611ad8 1137
a16e1123 1138 /* First, enumerate what we can from all config files */
718db961 1139 dual_timestamp_get(&m->units_load_start_timestamp);
a16e1123 1140 r = manager_enumerate(m);
718db961 1141 dual_timestamp_get(&m->units_load_finish_timestamp);
a16e1123
LP		 1142
1143 /* Second, deserialize if there is something to deserialize */
1cd974ed
ZJS		 1144 if (serialization)
1145 r = manager_deserialize(m, serialization, fds);
a16e1123 1146
01e10de3
LP		 1147 /* Any fds left? Find some unit which wants them. This is
1148 * useful to allow container managers to pass some file
1149 * descriptors to us pre-initialized. This enables
1150 * socket-based activation of entire containers. */
1151 if (fdset_size(fds) > 0) {
1152 q = manager_distribute_fds(m, fds);
1cd974ed 1153 if (q < 0 && r == 0)
01e10de3
LP		 1154 r = q;
1155 }
1156
d86f9d52
LP		 1157 /* We might have deserialized the notify fd, but if we didn't
1158 * then let's create the bus now */
1cd974ed
ZJS		 1159 q = manager_setup_notify(m);
1160 if (q < 0 && r == 0)
1161 r = q;
d86f9d52 1162
e3dd987c
LP		 1163 /* We might have deserialized the kdbus control fd, but if we
1164 * didn't, then let's create the bus now. */
1165 manager_setup_kdbus(m);
1166 manager_connect_bus(m, !!serialization);
8f8f05a9 1167 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
e3dd987c 1168
a16e1123 1169 /* Third, fire things up! */
007c6337 1170 manager_coldplug(m);
a16e1123 1171
9f611ad8 1172 if (serialization) {
a7556052
LP		 1173 assert(m->n_reloading > 0);
1174 m->n_reloading --;
71445ae7
LP		 1175
1176 /* Let's wait for the UnitNew/JobNew messages being
1177 * sent, before we notify that the reload is
1178 * finished */
1179 m->send_reloading_done = true;
9f611ad8
LP		 1180 }
1181
a16e1123 1182 return r;
f50e0a01
LP		 1183}
1184
718db961 1185int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
e5b5ae50 1186 int r;
7527cb52 1187 Transaction *tr;
e5b5ae50
LP		 1188
1189 assert(m);
1190 assert(type < _JOB_TYPE_MAX);
87f0e418 1191 assert(unit);
e5b5ae50 1192 assert(mode < _JOB_MODE_MAX);
60918275 1193
7358dc02
ZJS		 1194 if (mode == JOB_ISOLATE && type != JOB_START)
1195 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
c497c7a9 1196
7358dc02
ZJS		 1197 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1198 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
2528a7a6 1199
f2341e0a 1200 log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode));
9f04bd52 1201
c6497ccb 1202 type = job_type_collapse(type, unit);
e0209d83 1203
23ade460 1204 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
7527cb52
MS		 1205 if (!tr)
1206 return -ENOMEM;
11dd41ce 1207
7527cb52
MS		 1208 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1209 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
b94fbd30 1210 mode == JOB_IGNORE_DEPENDENCIES, e);
7527cb52
MS		 1211 if (r < 0)
1212 goto tr_abort;
c497c7a9 1213
7527cb52
MS		 1214 if (mode == JOB_ISOLATE) {
1215 r = transaction_add_isolate_jobs(tr, m);
1216 if (r < 0)
1217 goto tr_abort;
1218 }
1219
1220 r = transaction_activate(tr, m, mode, e);
1221 if (r < 0)
1222 goto tr_abort;
e5b5ae50 1223
f2341e0a 1224 log_unit_debug(unit,
66870f90
ZJS		 1225 "Enqueued job %s/%s as %u", unit->id,
1226 job_type_to_string(type), (unsigned) tr->anchor_job->id);
f50e0a01 1227
e5b5ae50 1228 if (_ret)
b94fbd30 1229 *_ret = tr->anchor_job;
60918275 1230
7527cb52 1231 transaction_free(tr);
e5b5ae50 1232 return 0;
7527cb52
MS		 1233
1234tr_abort:
1235 transaction_abort(tr);
1236 transaction_free(tr);
1237 return r;
e5b5ae50 1238}
60918275 1239
718db961 1240int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
28247076
LP		 1241 Unit *unit;
1242 int r;
1243
1244 assert(m);
1245 assert(type < _JOB_TYPE_MAX);
1246 assert(name);
1247 assert(mode < _JOB_MODE_MAX);
1248
c3090674
LP		 1249 r = manager_load_unit(m, name, NULL, NULL, &unit);
1250 if (r < 0)
28247076
LP		 1251 return r;
1252
398ef8ba 1253 return manager_add_job(m, type, unit, mode, override, e, _ret);
28247076
LP		 1254}
1255
60918275
LP		 1256Job *manager_get_job(Manager *m, uint32_t id) {
1257 assert(m);
1258
1259 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1260}
1261
87f0e418 1262Unit *manager_get_unit(Manager *m, const char *name) {
60918275
LP		 1263 assert(m);
1264 assert(name);
1265
87f0e418 1266 return hashmap_get(m->units, name);
60918275
LP		 1267}
1268
c1e1601e 1269unsigned manager_dispatch_load_queue(Manager *m) {
595ed347 1270 Unit *u;
c1e1601e 1271 unsigned n = 0;
60918275
LP		 1272
1273 assert(m);
1274
223dabab
LP		 1275 /* Make sure we are not run recursively */
1276 if (m->dispatching_load_queue)
c1e1601e 1277 return 0;
223dabab
LP		 1278
1279 m->dispatching_load_queue = true;
1280
87f0e418 1281 /* Dispatches the load queue. Takes a unit from the queue and
60918275
LP		 1282 * tries to load its data until the queue is empty */
1283
595ed347
MS		 1284 while ((u = m->load_queue)) {
1285 assert(u->in_load_queue);
034c6ed7 1286
595ed347 1287 unit_load(u);
c1e1601e 1288 n++;
60918275
LP		 1289 }
1290
223dabab 1291 m->dispatching_load_queue = false;
c1e1601e 1292 return n;
60918275
LP		 1293}
1294
c2756a68
LP		 1295int manager_load_unit_prepare(
1296 Manager *m,
1297 const char *name,
1298 const char *path,
718db961 1299 sd_bus_error *e,
c2756a68
LP		 1300 Unit **_ret) {
1301
87f0e418 1302 Unit *ret;
7d17cfbc 1303 UnitType t;
60918275
LP		 1304 int r;
1305
1306 assert(m);
9e2f7c11 1307 assert(name || path);
60918275 1308
db06e3b6
LP		 1309 /* This will prepare the unit for loading, but not actually
1310 * load anything from disk. */
0301abf4 1311
718db961
LP		 1312 if (path && !is_path(path))
1313 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
9e2f7c11
LP		 1314
1315 if (!name)
2b6bf07d 1316 name = basename(path);
9e2f7c11 1317
7d17cfbc
MS		 1318 t = unit_name_to_type(name);
1319
7410616c 1320 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
718db961 1321 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
60918275 1322
7d17cfbc
MS		 1323 ret = manager_get_unit(m, name);
1324 if (ret) {
034c6ed7 1325 *_ret = ret;
413d6313 1326 return 1;
034c6ed7 1327 }
60918275 1328
7d17cfbc
MS		 1329 ret = unit_new(m, unit_vtable[t]->object_size);
1330 if (!ret)
60918275
LP		 1331 return -ENOMEM;
1332
7d17cfbc 1333 if (path) {
ac155bb8
MS		 1334 ret->fragment_path = strdup(path);
1335 if (!ret->fragment_path) {
0301abf4
LP		 1336 unit_free(ret);
1337 return -ENOMEM;
1338 }
7d17cfbc 1339 }
0301abf4 1340
1058cbf2
ZJS		 1341 r = unit_add_name(ret, name);
1342 if (r < 0) {
87f0e418 1343 unit_free(ret);
1ffba6fe 1344 return r;
60918275
LP		 1345 }
1346
87f0e418 1347 unit_add_to_load_queue(ret);
c1e1601e 1348 unit_add_to_dbus_queue(ret);
949061f0 1349 unit_add_to_gc_queue(ret);
c1e1601e 1350
db06e3b6
LP		 1351 if (_ret)
1352 *_ret = ret;
1353
1354 return 0;
1355}
1356
c2756a68
LP		 1357int manager_load_unit(
1358 Manager *m,
1359 const char *name,
1360 const char *path,
718db961 1361 sd_bus_error *e,
c2756a68
LP		 1362 Unit **_ret) {
1363
db06e3b6
LP		 1364 int r;
1365
1366 assert(m);
1367
1368 /* This will load the service information files, but not actually
1369 * start any services or anything. */
1370
c3090674
LP		 1371 r = manager_load_unit_prepare(m, name, path, e, _ret);
1372 if (r != 0)
db06e3b6
LP		 1373 return r;
1374
f50e0a01 1375 manager_dispatch_load_queue(m);
60918275 1376
9e2f7c11 1377 if (_ret)
413d6313 1378 *_ret = unit_follow_merge(*_ret);
9e2f7c11 1379
60918275
LP		 1380 return 0;
1381}
a66d02c3 1382
cea8e32e 1383void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1384 Iterator i;
a66d02c3
LP		 1385 Job *j;
1386
1387 assert(s);
1388 assert(f);
1389
034c6ed7 1390 HASHMAP_FOREACH(j, s->jobs, i)
cea8e32e 1391 job_dump(j, f, prefix);
a66d02c3
LP		 1392}
1393
87f0e418 1394void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
034c6ed7 1395 Iterator i;
87f0e418 1396 Unit *u;
11dd41ce 1397 const char *t;
a66d02c3
LP		 1398
1399 assert(s);
1400 assert(f);
1401
87f0e418 1402 HASHMAP_FOREACH_KEY(u, t, s->units, i)
ac155bb8 1403 if (u->id == t)
87f0e418 1404 unit_dump(u, f, prefix);
a66d02c3 1405}
7fad411c
LP		 1406
1407void manager_clear_jobs(Manager *m) {
1408 Job *j;
1409
1410 assert(m);
1411
7fad411c 1412 while ((j = hashmap_first(m->jobs)))
5273510e
MS		 1413 /* No need to recurse. We're cancelling all jobs. */
1414 job_finish_and_invalidate(j, JOB_CANCELED, false);
7fad411c 1415}
83c60c9f 1416
752b5905
LP		 1417static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1418 Manager *m = userdata;
83c60c9f 1419 Job *j;
034c6ed7 1420
752b5905
LP		 1421 assert(source);
1422 assert(m);
9152c765 1423
034c6ed7 1424 while ((j = m->run_queue)) {
ac1135be 1425 assert(j->installed);
034c6ed7
LP		 1426 assert(j->in_run_queue);
1427
1428 job_run_and_invalidate(j);
9152c765 1429 }
034c6ed7 1430
a0b64226 1431 if (m->n_running_jobs > 0)
03b717a3
MS		 1432 manager_watch_jobs_in_progress(m);
1433
31a7eb86
ZJS		 1434 if (m->n_on_console > 0)
1435 manager_watch_idle_pipe(m);
1436
752b5905 1437 return 1;
c1e1601e
LP		 1438}
1439
9588bc32 1440static unsigned manager_dispatch_dbus_queue(Manager *m) {
c1e1601e 1441 Job *j;
595ed347 1442 Unit *u;
c1e1601e
LP		 1443 unsigned n = 0;
1444
1445 assert(m);
1446
1447 if (m->dispatching_dbus_queue)
1448 return 0;
1449
1450 m->dispatching_dbus_queue = true;
1451
595ed347
MS		 1452 while ((u = m->dbus_unit_queue)) {
1453 assert(u->in_dbus_queue);
c1e1601e 1454
595ed347 1455 bus_unit_send_change_signal(u);
c1e1601e
LP		 1456 n++;
1457 }
1458
1459 while ((j = m->dbus_job_queue)) {
1460 assert(j->in_dbus_queue);
1461
1462 bus_job_send_change_signal(j);
1463 n++;
1464 }
1465
1466 m->dispatching_dbus_queue = false;
71445ae7
LP		 1467
1468 if (m->send_reloading_done) {
1469 m->send_reloading_done = false;
1470
718db961 1471 bus_manager_send_reloading(m, false);
71445ae7
LP		 1472 }
1473
718db961
LP		 1474 if (m->queued_message)
1475 bus_send_queued_message(m);
1476
c1e1601e 1477 return n;
9152c765
LP		 1478}
1479
a354329f 1480static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n, FDSet *fds) {
5ba6985b
LP		 1481 _cleanup_strv_free_ char **tags = NULL;
1482
1483 assert(m);
1484 assert(u);
1485 assert(buf);
1486 assert(n > 0);
1487
1488 tags = strv_split(buf, "\n\r");
1489 if (!tags) {
1490 log_oom();
1491 return;
1492 }
1493
5ba6985b 1494 if (UNIT_VTABLE(u)->notify_message)
a354329f 1495 UNIT_VTABLE(u)->notify_message(u, pid, tags, fds);
34959677
TG		 1496 else
1497 log_unit_debug(u, "Got notification message for unit. Ignoring.");
5ba6985b
LP		 1498}
1499
718db961
LP		 1500static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1501 Manager *m = userdata;
8c47c732 1502 ssize_t n;
a354329f 1503 int r;
8c47c732
LP		 1504
1505 assert(m);
718db961
LP		 1506 assert(m->notify_fd == fd);
1507
1508 if (revents != EPOLLIN) {
1509 log_warning("Got unexpected poll event for notify fd.");
1510 return 0;
1511 }
8c47c732
LP		 1512
1513 for (;;) {
a354329f
LP		 1514 _cleanup_fdset_free_ FDSet *fds = NULL;
1515 char buf[NOTIFY_BUFFER_MAX+1];
b92bea5d
ZJS		 1516 struct iovec iovec = {
1517 .iov_base = buf,
1518 .iov_len = sizeof(buf)-1,
1519 };
8c47c732
LP		 1520 union {
1521 struct cmsghdr cmsghdr;
a354329f
LP		 1522 uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
1523 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)];
b92bea5d 1524 } control = {};
b92bea5d
ZJS		 1525 struct msghdr msghdr = {
1526 .msg_iov = &iovec,
1527 .msg_iovlen = 1,
1528 .msg_control = &control,
1529 .msg_controllen = sizeof(control),
1530 };
a354329f
LP		 1531 struct cmsghdr *cmsg;
1532 struct ucred *ucred = NULL;
1533 bool found = false;
70af4d17 1534 Unit *u1, *u2, *u3;
a354329f
LP		 1535 int *fd_array = NULL;
1536 unsigned n_fds = 0;
8c47c732 1537
a354329f
LP		 1538 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
1539 if (n < 0) {
f6144808 1540 if (errno == EAGAIN || errno == EINTR)
8c47c732
LP		 1541 break;
1542
1543 return -errno;
1544 }
a354329f 1545
2a1288ff 1546 CMSG_FOREACH(cmsg, &msghdr) {
a354329f
LP		 1547 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
1548
1549 fd_array = (int*) CMSG_DATA(cmsg);
1550 n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
1551
1552 } else if (cmsg->cmsg_level == SOL_SOCKET &&
1553 cmsg->cmsg_type == SCM_CREDENTIALS &&
1554 cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) {
1555
1556 ucred = (struct ucred*) CMSG_DATA(cmsg);
1557 }
1558 }
1559
1560 if (n_fds > 0) {
1561 assert(fd_array);
1562
1563 r = fdset_new_array(&fds, fd_array, n_fds);
1564 if (r < 0) {
1565 close_many(fd_array, n_fds);
1566 return log_oom();
1567 }
1568 }
8c47c732 1569
a354329f
LP		 1570 if (!ucred || ucred->pid <= 0) {
1571 log_warning("Received notify message without valid credentials. Ignoring.");
8c47c732
LP		 1572 continue;
1573 }
1574
a354329f
LP		 1575 if ((size_t) n >= sizeof(buf)) {
1576 log_warning("Received notify message exceeded maximum size. Ignoring.");
1577 continue;
1578 }
8c47c732 1579
8c40acf7 1580 buf[n] = 0;
8c47c732 1581
70af4d17
LP		 1582 /* Notify every unit that might be interested, but try
1583 * to avoid notifying the same one multiple times. */
b3ac818b 1584 u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid);
70af4d17 1585 if (u1) {
a354329f 1586 manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds);
5ba6985b
LP		 1587 found = true;
1588 }
1589
fea72cc0 1590 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid));
70af4d17 1591 if (u2 && u2 != u1) {
a354329f 1592 manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds);
5ba6985b
LP		 1593 found = true;
1594 }
1595
fea72cc0 1596 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid));
70af4d17 1597 if (u3 && u3 != u2 && u3 != u1) {
a354329f 1598 manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds);
5ba6985b
LP		 1599 found = true;
1600 }
8c47c732 1601
5ba6985b
LP		 1602 if (!found)
1603 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
a354329f
LP		 1604
1605 if (fdset_size(fds) > 0)
1606 log_warning("Got auxiliary fds with notification message, closing all.");
8c47c732
LP		 1607 }
1608
1609 return 0;
1610}
1611
5ba6985b
LP		 1612static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1613 assert(m);
1614 assert(u);
1615 assert(si);
1616
f2341e0a 1617 log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
5ba6985b
LP		 1618
1619 unit_unwatch_pid(u, si->si_pid);
1620 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1621}
1622
034c6ed7 1623static int manager_dispatch_sigchld(Manager *m) {
9152c765
LP		 1624 assert(m);
1625
1626 for (;;) {
b92bea5d 1627 siginfo_t si = {};
9152c765 1628
4112df16
LP		 1629 /* First we call waitd() for a PID and do not reap the
1630 * zombie. That way we can still access /proc/$PID for
1631 * it while it is a zombie. */
1632 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
acbb0225
LP		 1633
1634 if (errno == ECHILD)
1635 break;
1636
4112df16
LP		 1637 if (errno == EINTR)
1638 continue;
1639
9152c765 1640 return -errno;
acbb0225 1641 }
9152c765 1642
4112df16 1643 if (si.si_pid <= 0)
9152c765
LP		 1644 break;
1645
15d5d9d9 1646 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
7fd1b19b 1647 _cleanup_free_ char *name = NULL;
70af4d17 1648 Unit *u1, *u2, *u3;
4112df16 1649
87d2c1ff 1650 get_process_comm(si.si_pid, &name);
4112df16 1651
5ba6985b
LP		 1652 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1653 si.si_pid, strna(name),
1654 sigchld_code_to_string(si.si_code),
1655 si.si_status,
1656 strna(si.si_code == CLD_EXITED
1657 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1658 : signal_to_string(si.si_status)));
1659
1660 /* And now figure out the unit this belongs
1661 * to, it might be multiple... */
b3ac818b 1662 u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid);
70af4d17
LP		 1663 if (u1)
1664 invoke_sigchld_event(m, u1, &si);
fea72cc0 1665 u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1666 if (u2 && u2 != u1)
1667 invoke_sigchld_event(m, u2, &si);
fea72cc0 1668 u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid));
70af4d17
LP		 1669 if (u3 && u3 != u2 && u3 != u1)
1670 invoke_sigchld_event(m, u3, &si);
5ba6985b 1671 }
8c47c732 1672
4112df16
LP		 1673 /* And now, we actually reap the zombie. */
1674 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1675 if (errno == EINTR)
1676 continue;
1677
1678 return -errno;
1679 }
9152c765
LP		 1680 }
1681
1682 return 0;
1683}
1684
7d793605 1685static int manager_start_target(Manager *m, const char *name, JobMode mode) {
718db961 1686 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
28247076 1687 int r;
398ef8ba 1688
f2341e0a 1689 log_debug("Activating special unit %s", name);
1e001f52 1690
bd0af849
ZJS		 1691 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1692 if (r < 0)
f2341e0a 1693 log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
a1b256b0
LP		 1694
1695 return r;
28247076
LP		 1696}
1697
718db961
LP		 1698static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1699 Manager *m = userdata;
9152c765
LP		 1700 ssize_t n;
1701 struct signalfd_siginfo sfsi;
1702 bool sigchld = false;
dacd6cee 1703 int r;
9152c765
LP		 1704
1705 assert(m);
718db961
LP		 1706 assert(m->signal_fd == fd);
1707
1708 if (revents != EPOLLIN) {
1709 log_warning("Got unexpected events from signal file descriptor.");
1710 return 0;
1711 }
9152c765
LP		 1712
1713 for (;;) {
718db961 1714 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
57cb4adf 1715 if (n != sizeof(sfsi)) {
9152c765
LP		 1716
1717 if (n >= 0)
1718 return -EIO;
1719
63090775 1720 if (errno == EINTR || errno == EAGAIN)
acbb0225 1721 break;
9152c765
LP		 1722
1723 return -errno;
1724 }
1725
4daf54a8 1726 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
b2c23da8 1727 (sfsi.ssi_signo == SIGTERM && m->running_as == MANAGER_USER)
4daf54a8
ZJS		 1728 ? LOG_DEBUG : LOG_INFO,
1729 &sfsi);
1e001f52 1730
b9cd2ec1
LP		 1731 switch (sfsi.ssi_signo) {
1732
4112df16 1733 case SIGCHLD:
9152c765 1734 sigchld = true;
b9cd2ec1
LP		 1735 break;
1736
6632c602 1737 case SIGTERM:
b2c23da8 1738 if (m->running_as == MANAGER_SYSTEM) {
db06e3b6
LP		 1739 /* This is for compatibility with the
1740 * original sysvinit */
e11dc4a2 1741 m->exit_code = MANAGER_REEXECUTE;
a1b256b0
LP		 1742 break;
1743 }
84e9af1e 1744
a1b256b0 1745 /* Fall through */
e11dc4a2
LP		 1746
1747 case SIGINT:
b2c23da8 1748 if (m->running_as == MANAGER_SYSTEM) {
2e5c94b9 1749
d1f6b1b4
LP		 1750 /* If the user presses C-A-D more than
1751 * 7 times within 2s, we reboot
2e5c94b9
LP		 1752 * immediately. */
1753
1754 if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
1755 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1756 else {
1757 log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
a626df3e 1758 status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
2e5c94b9
LP		 1759 m->exit_code = MANAGER_REBOOT;
1760 }
1761
84e9af1e
LP		 1762 break;
1763 }
1764
a1b256b0 1765 /* Run the exit target if there is one, if not, just exit. */
0003d1ab 1766 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
a1b256b0
LP		 1767 m->exit_code = MANAGER_EXIT;
1768 return 0;
1769 }
1770
1771 break;
84e9af1e 1772
28247076 1773 case SIGWINCH:
b2c23da8 1774 if (m->running_as == MANAGER_SYSTEM)
7d793605 1775 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
84e9af1e 1776
28247076
LP		 1777 /* This is a nop on non-init */
1778 break;
84e9af1e 1779
28247076 1780 case SIGPWR:
b2c23da8 1781 if (m->running_as == MANAGER_SYSTEM)
7d793605 1782 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
84e9af1e 1783
28247076 1784 /* This is a nop on non-init */
84e9af1e 1785 break;
6632c602 1786
1005d14f 1787 case SIGUSR1: {
57ee42ce
LP		 1788 Unit *u;
1789
1790 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1791
1792 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1793 log_info("Trying to reconnect to bus...");
3996fbe2 1794 bus_init(m, true);
57ee42ce
LP		 1795 }
1796
1797 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1798 log_info("Loading D-Bus service...");
7d793605 1799 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
57ee42ce
LP		 1800 }
1801
1802 break;
1803 }
1804
2149e37c 1805 case SIGUSR2: {
718db961
LP		 1806 _cleanup_free_ char *dump = NULL;
1807 _cleanup_fclose_ FILE *f = NULL;
2149e37c
LP		 1808 size_t size;
1809
718db961
LP		 1810 f = open_memstream(&dump, &size);
1811 if (!f) {
dacd6cee 1812 log_warning_errno(errno, "Failed to allocate memory stream: %m");
2149e37c
LP		 1813 break;
1814 }
1815
1816 manager_dump_units(m, f, "\t");
1817 manager_dump_jobs(m, f, "\t");
1818
dacd6cee
LP		 1819 r = fflush_and_check(f);
1820 if (r < 0) {
1821 log_warning_errno(r, "Failed to write status stream: %m");
b2cdc666
DM		 1822 break;
1823 }
1824
2149e37c 1825 log_dump(LOG_INFO, dump);
1005d14f 1826 break;
2149e37c 1827 }
1005d14f 1828
a16e1123
LP		 1829 case SIGHUP:
1830 m->exit_code = MANAGER_RELOAD;
1831 break;
1832
7d793605 1833 default: {
253ee27a 1834
0003d1ab
LP		 1835 /* Starting SIGRTMIN+0 */
1836 static const char * const target_table[] = {
7d793605
LP		 1837 [0] = SPECIAL_DEFAULT_TARGET,
1838 [1] = SPECIAL_RESCUE_TARGET,
f057408c 1839 [2] = SPECIAL_EMERGENCY_TARGET,
7d793605
LP		 1840 [3] = SPECIAL_HALT_TARGET,
1841 [4] = SPECIAL_POWEROFF_TARGET,
0003d1ab
LP		 1842 [5] = SPECIAL_REBOOT_TARGET,
1843 [6] = SPECIAL_KEXEC_TARGET
1844 };
1845
1846 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1847 static const ManagerExitCode code_table[] = {
1848 [0] = MANAGER_HALT,
1849 [1] = MANAGER_POWEROFF,
1850 [2] = MANAGER_REBOOT,
1851 [3] = MANAGER_KEXEC
7d793605
LP		 1852 };
1853
1854 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
0003d1ab 1855 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
764e9b5f
MS		 1856 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1857 manager_start_target(m, target_table[idx],
1858 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
7d793605
LP		 1859 break;
1860 }
1861
0003d1ab
LP		 1862 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1863 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1864 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1865 break;
1866 }
1867
0658666b
LP		 1868 switch (sfsi.ssi_signo - SIGRTMIN) {
1869
1870 case 20:
1871 log_debug("Enabling showing of status.");
d450b6f2 1872 manager_set_show_status(m, SHOW_STATUS_YES);
0658666b
LP		 1873 break;
1874
1875 case 21:
1876 log_debug("Disabling showing of status.");
d450b6f2 1877 manager_set_show_status(m, SHOW_STATUS_NO);
0658666b
LP		 1878 break;
1879
253ee27a
LP		 1880 case 22:
1881 log_set_max_level(LOG_DEBUG);
1882 log_notice("Setting log level to debug.");
1883 break;
1884
1885 case 23:
1886 log_set_max_level(LOG_INFO);
1887 log_notice("Setting log level to info.");
1888 break;
1889
600b704e 1890 case 24:
b2c23da8 1891 if (m->running_as == MANAGER_USER) {
600b704e
LP		 1892 m->exit_code = MANAGER_EXIT;
1893 return 0;
1894 }
1895
1896 /* This is a nop on init */
1897 break;
1898
4cfa2c99 1899 case 26:
c1dc6153 1900 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
4cfa2c99
LP		 1901 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1902 log_notice("Setting log target to journal-or-kmsg.");
1903 break;
1904
253ee27a
LP		 1905 case 27:
1906 log_set_target(LOG_TARGET_CONSOLE);
1907 log_notice("Setting log target to console.");
1908 break;
1909
1910 case 28:
1911 log_set_target(LOG_TARGET_KMSG);
1912 log_notice("Setting log target to kmsg.");
1913 break;
1914
0658666b 1915 default:
4e240ab0 1916 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
0658666b 1917 }
b9cd2ec1 1918 }
7d793605 1919 }
9152c765
LP		 1920 }
1921
1922 if (sigchld)
7b77ed8c 1923 manager_dispatch_sigchld(m);
034c6ed7
LP		 1924
1925 return 0;
1926}
1927
718db961
LP		 1928static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1929 Manager *m = userdata;
1930 Iterator i;
1931 Unit *u;
034c6ed7
LP		 1932
1933 assert(m);
718db961 1934 assert(m->time_change_fd == fd);
034c6ed7 1935
718db961 1936 log_struct(LOG_INFO,
e2cc6eca
LP		 1937 LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1938 LOG_MESSAGE("Time has been changed"),
718db961 1939 NULL);
034c6ed7 1940
718db961
LP		 1941 /* Restart the watch */
1942 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
03e334a1 1943 m->time_change_fd = safe_close(m->time_change_fd);
ef734fd6 1944
718db961 1945 manager_setup_time_change(m);
4e434314 1946
718db961
LP		 1947 HASHMAP_FOREACH(u, m->units, i)
1948 if (UNIT_VTABLE(u)->time_change)
1949 UNIT_VTABLE(u)->time_change(u);
ea430986 1950
718db961
LP		 1951 return 0;
1952}
ea430986 1953
718db961
LP		 1954static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1955 Manager *m = userdata;
8742514c 1956
718db961
LP		 1957 assert(m);
1958 assert(m->idle_pipe[2] == fd);
8742514c 1959
718db961 1960 m->no_console_output = m->n_on_console > 0;
03b717a3 1961
718db961 1962 manager_close_idle_pipe(m);
03b717a3 1963
718db961
LP		 1964 return 0;
1965}
31a7eb86 1966
718db961
LP		 1967static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1968 Manager *m = userdata;
fd08a840
ZJS		 1969 int r;
1970 uint64_t next;
31a7eb86 1971
718db961 1972 assert(m);
fd08a840 1973 assert(source);
9152c765 1974
718db961 1975 manager_print_jobs_in_progress(m);
fd08a840
ZJS		 1976
1977 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1978 r = sd_event_source_set_time(source, next);
1979 if (r < 0)
1980 return r;
1981
1982 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
9152c765
LP		 1983}
1984
1985int manager_loop(Manager *m) {
1986 int r;
9152c765 1987
fac9f8df 1988 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
ea430986 1989
9152c765 1990 assert(m);
f755e3b7 1991 m->exit_code = MANAGER_OK;
9152c765 1992
fe51822e
LP		 1993 /* Release the path cache */
1994 set_free_free(m->unit_path_cache);
1995 m->unit_path_cache = NULL;
1996
b0c918b9
LP		 1997 manager_check_finished(m);
1998
a4312405 1999 /* There might still be some zombies hanging around from
f3669545 2000 * before we were exec()'ed. Let's reap them. */
e96d6be7
LP		 2001 r = manager_dispatch_sigchld(m);
2002 if (r < 0)
a4312405
LP		 2003 return r;
2004
f755e3b7 2005 while (m->exit_code == MANAGER_OK) {
718db961 2006 usec_t wait_usec;
9152c765 2007
b2c23da8 2008 if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM)
e96d6be7
LP		 2009 watchdog_ping();
2010
ea430986
LP		 2011 if (!ratelimit_test(&rl)) {
2012 /* Yay, something is going seriously wrong, pause a little */
2013 log_warning("Looping too fast. Throttling execution a little.");
2014 sleep(1);
e96d6be7 2015 continue;
ea430986
LP		 2016 }
2017
37a8e683 2018 if (manager_dispatch_load_queue(m) > 0)
23a177ef
LP		 2019 continue;
2020
cf1265e1 2021 if (manager_dispatch_gc_queue(m) > 0)
701cc384
LP		 2022 continue;
2023
cf1265e1 2024 if (manager_dispatch_cleanup_queue(m) > 0)
c1e1601e 2025 continue;
034c6ed7 2026
cf1265e1 2027 if (manager_dispatch_cgroup_queue(m) > 0)
c1e1601e
LP		 2028 continue;
2029
c1e1601e 2030 if (manager_dispatch_dbus_queue(m) > 0)
ea430986 2031 continue;
ea430986 2032
c757a65b 2033 /* Sleep for half the watchdog time */
b2c23da8 2034 if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) {
718db961
LP		 2035 wait_usec = m->runtime_watchdog / 2;
2036 if (wait_usec <= 0)
2037 wait_usec = 1;
c757a65b 2038 } else
3a43da28 2039 wait_usec = USEC_INFINITY;
9152c765 2040
718db961 2041 r = sd_event_run(m->event, wait_usec);
23bbb0de
MS		 2042 if (r < 0)
2043 return log_error_errno(r, "Failed to run event loop: %m");
a16e1123 2044 }
957ca890 2045
a16e1123 2046 return m->exit_code;
83c60c9f 2047}
ea430986 2048
718db961 2049int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
ede3a796 2050 _cleanup_free_ char *n = NULL;
ea430986 2051 Unit *u;
80fbf05e 2052 int r;
ea430986
LP		 2053
2054 assert(m);
2055 assert(s);
2056 assert(_u);
2057
ede3a796
LP		 2058 r = unit_name_from_dbus_path(s, &n);
2059 if (r < 0)
2060 return r;
ea430986 2061
80fbf05e 2062 r = manager_load_unit(m, n, NULL, e, &u);
80fbf05e
MS		 2063 if (r < 0)
2064 return r;
ea430986
LP		 2065
2066 *_u = u;
2067
2068 return 0;
2069}
86fbf370
LP		 2070
2071int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
718db961 2072 const char *p;
86fbf370 2073 unsigned id;
718db961 2074 Job *j;
86fbf370
LP		 2075 int r;
2076
2077 assert(m);
2078 assert(s);
2079 assert(_j);
2080
718db961
LP		 2081 p = startswith(s, "/org/freedesktop/systemd1/job/");
2082 if (!p)
86fbf370
LP		 2083 return -EINVAL;
2084
718db961 2085 r = safe_atou(p, &id);
8742514c 2086 if (r < 0)
86fbf370
LP		 2087 return r;
2088
8742514c
LP		 2089 j = manager_get_job(m, id);
2090 if (!j)
86fbf370
LP		 2091 return -ENOENT;
2092
2093 *_j = j;
2094
2095 return 0;
2096}
dfcd764e 2097
4927fcae 2098void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
e537352b 2099
4927fcae 2100#ifdef HAVE_AUDIT
2ba11090 2101 _cleanup_free_ char *p = NULL;
0aa281df 2102 const char *msg;
7410616c 2103 int audit_fd, r;
e537352b 2104
c1165f82
LP		 2105 audit_fd = get_audit_fd();
2106 if (audit_fd < 0)
e537352b
LP		 2107 return;
2108
bbd3a7ba
LP		 2109 /* Don't generate audit events if the service was already
2110 * started and we're just deserializing */
a7556052 2111 if (m->n_reloading > 0)
bbd3a7ba
LP		 2112 return;
2113
b2c23da8 2114 if (m->running_as != MANAGER_SYSTEM)
f1dd0c3f
LP		 2115 return;
2116
ac155bb8 2117 if (u->type != UNIT_SERVICE)
f1dd0c3f
LP		 2118 return;
2119
7410616c
LP		 2120 r = unit_name_to_prefix_and_instance(u->id, &p);
2121 if (r < 0) {
2122 log_error_errno(r, "Failed to extract prefix and instance of unit name: %m");
e537352b
LP		 2123 return;
2124 }
2125
63c372cb 2126 msg = strjoina("unit=", p);
0aa281df
LP		 2127 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2128 if (errno == EPERM)
391ade86 2129 /* We aren't allowed to send audit messages?
44785992 2130 * Then let's not retry again. */
c1165f82 2131 close_audit_fd();
0aa281df 2132 else
56f64d95 2133 log_warning_errno(errno, "Failed to send audit message: %m");
391ade86 2134 }
4927fcae 2135#endif
e537352b 2136
e537352b
LP		 2137}
2138
e983b760 2139void manager_send_unit_plymouth(Manager *m, Unit *u) {
1d749d04 2140 union sockaddr_union sa = PLYMOUTH_SOCKET;
2ba11090 2141
e983b760 2142 int n = 0;
2ba11090
ZJS		 2143 _cleanup_free_ char *message = NULL;
2144 _cleanup_close_ int fd = -1;
e983b760
LP		 2145
2146 /* Don't generate plymouth events if the service was already
2147 * started and we're just deserializing */
a7556052 2148 if (m->n_reloading > 0)
e983b760
LP		 2149 return;
2150
b2c23da8 2151 if (m->running_as != MANAGER_SYSTEM)
e983b760
LP		 2152 return;
2153
75f86906 2154 if (detect_container() > 0)
3772995a
LP		 2155 return;
2156
ac155bb8
MS		 2157 if (u->type != UNIT_SERVICE &&
2158 u->type != UNIT_MOUNT &&
2159 u->type != UNIT_SWAP)
e983b760
LP		 2160 return;
2161
2162 /* We set SOCK_NONBLOCK here so that we rather drop the
2163 * message then wait for plymouth */
e62d8c39
ZJS		 2164 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2165 if (fd < 0) {
56f64d95 2166 log_error_errno(errno, "socket() failed: %m");
e983b760
LP		 2167 return;
2168 }
2169
96707269 2170 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
e983b760 2171
2ba11090 2172 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2173 log_error_errno(errno, "connect() failed: %m");
2ba11090 2174 return;
e983b760
LP		 2175 }
2176
ac155bb8 2177 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
0d0f0c50 2178 log_oom();
2ba11090 2179 return;
e983b760
LP		 2180 }
2181
2182 errno = 0;
2ba11090
ZJS		 2183 if (write(fd, message, n + 1) != n + 1)
2184 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
56f64d95 2185 log_error_errno(errno, "Failed to write Plymouth message: %m");
e983b760
LP		 2186}
2187
d8d5ab98 2188int manager_open_serialization(Manager *m, FILE **_f) {
8e33886e 2189 const char *path;
df28bc08 2190 int fd = -1;
a16e1123
LP		 2191 FILE *f;
2192
2193 assert(_f);
2194
b2c23da8 2195 path = m->running_as == MANAGER_SYSTEM ? "/run/systemd" : "/tmp";
8e33886e 2196 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
d86f9d52 2197 if (fd < 0)
a16e1123 2198 return -errno;
a16e1123 2199
a16e1123 2200 log_debug("Serializing state to %s", path);
a16e1123 2201
01e10de3 2202 f = fdopen(fd, "w+");
d86f9d52 2203 if (!f) {
03e334a1 2204 safe_close(fd);
a16e1123 2205 return -errno;
d86f9d52 2206 }
a16e1123
LP		 2207
2208 *_f = f;
2209
2210 return 0;
2211}
2212
b3680f49 2213int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
a16e1123
LP		 2214 Iterator i;
2215 Unit *u;
2216 const char *t;
4a9fd066 2217 char **e;
a16e1123
LP		 2218 int r;
2219
2220 assert(m);
2221 assert(f);
2222 assert(fds);
2223
a7556052 2224 m->n_reloading ++;
38c52d46 2225
1fa2f38f 2226 fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id);
01d67b43 2227 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
33c5fae9
LP		 2228 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2229 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
01d67b43 2230
915b3753 2231 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
915b3753 2232 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
718db961 2233 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
e9ddabc2 2234 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
f38ed060 2235
26a1efdf 2236 if (!in_initrd()) {
915b3753 2237 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
f38ed060 2238 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
718db961
LP		 2239 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2240 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2241 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2242 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2243 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2244 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
f38ed060 2245 }
47a483a1 2246
b3680f49
HH		 2247 if (!switching_root) {
2248 STRV_FOREACH(e, m->environment) {
2249 _cleanup_free_ char *ce;
4a9fd066 2250
b3680f49 2251 ce = cescape(*e);
e3dd987c
LP		 2252 if (!ce)
2253 return -ENOMEM;
2254
2255 fprintf(f, "env=%s\n", *e);
b3680f49 2256 }
4a9fd066
OS		 2257 }
2258
d86f9d52
LP		 2259 if (m->notify_fd >= 0) {
2260 int copy;
2261
2262 copy = fdset_put_dup(fds, m->notify_fd);
2263 if (copy < 0)
2264 return copy;
2265
2266 fprintf(f, "notify-fd=%i\n", copy);
2267 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2268 }
2269
e3dd987c
LP		 2270 if (m->kdbus_fd >= 0) {
2271 int copy;
2272
2273 copy = fdset_put_dup(fds, m->kdbus_fd);
2274 if (copy < 0)
2275 return copy;
2276
2277 fprintf(f, "kdbus-fd=%i\n", copy);
2278 }
2279
8f8f05a9 2280 bus_track_serialize(m->subscribed, f);
6fa48533 2281
f2382a94
LP		 2282 fputc('\n', f);
2283
a16e1123 2284 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
ac155bb8 2285 if (u->id != t)
a16e1123
LP		 2286 continue;
2287
a16e1123 2288 /* Start marker */
ac155bb8 2289 fputs(u->id, f);
a16e1123
LP		 2290 fputc('\n', f);
2291
6fa48533
LP		 2292 r = unit_serialize(u, f, fds, !switching_root);
2293 if (r < 0) {
a7556052 2294 m->n_reloading --;
a16e1123 2295 return r;
38c52d46 2296 }
a16e1123
LP		 2297 }
2298
a7556052
LP		 2299 assert(m->n_reloading > 0);
2300 m->n_reloading --;
38c52d46 2301
a16e1123
LP		 2302 if (ferror(f))
2303 return -EIO;
2304
b23de6af
LP		 2305 r = bus_fdset_add_all(m, fds);
2306 if (r < 0)
2307 return r;
2308
a16e1123
LP		 2309 return 0;
2310}
2311
2312int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2313 int r = 0;
2314
2315 assert(m);
2316 assert(f);
2317
2318 log_debug("Deserializing state...");
2319
a7556052 2320 m->n_reloading ++;
82c64bf5 2321
10f8e83c 2322 for (;;) {
20c03b7b 2323 char line[LINE_MAX], *l;
10f8e83c
LP		 2324
2325 if (!fgets(line, sizeof(line), f)) {
2326 if (feof(f))
2327 r = 0;
2328 else
2329 r = -errno;
2330
2331 goto finish;
2332 }
2333
2334 char_array_0(line);
2335 l = strstrip(line);
2336
2337 if (l[0] == 0)
2338 break;
2339
01d67b43
LP		 2340 if (startswith(l, "current-job-id=")) {
2341 uint32_t id;
2342
2343 if (safe_atou32(l+15, &id) < 0)
e5035a27 2344 log_debug("Failed to parse current job id value %s", l+15);
01d67b43
LP		 2345 else
2346 m->current_job_id = MAX(m->current_job_id, id);
718db961 2347
33c5fae9
LP		 2348 } else if (startswith(l, "n-installed-jobs=")) {
2349 uint32_t n;
2350
2351 if (safe_atou32(l+17, &n) < 0)
e5035a27 2352 log_debug("Failed to parse installed jobs counter %s", l+17);
33c5fae9
LP		 2353 else
2354 m->n_installed_jobs += n;
718db961 2355
33c5fae9
LP		 2356 } else if (startswith(l, "n-failed-jobs=")) {
2357 uint32_t n;
2358
2359 if (safe_atou32(l+14, &n) < 0)
e5035a27 2360 log_debug("Failed to parse failed jobs counter %s", l+14);
33c5fae9
LP		 2361 else
2362 m->n_failed_jobs += n;
718db961 2363
01d67b43
LP		 2364 } else if (startswith(l, "taint-usr=")) {
2365 int b;
2366
e3dd987c
LP		 2367 b = parse_boolean(l+10);
2368 if (b < 0)
e5035a27 2369 log_debug("Failed to parse taint /usr flag %s", l+10);
01d67b43
LP		 2370 else
2371 m->taint_usr = m->taint_usr || b;
718db961 2372
915b3753
LP		 2373 } else if (startswith(l, "firmware-timestamp="))
2374 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2375 else if (startswith(l, "loader-timestamp="))
2376 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2377 else if (startswith(l, "kernel-timestamp="))
2378 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2379 else if (startswith(l, "initrd-timestamp="))
e9ddabc2 2380 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
915b3753
LP		 2381 else if (startswith(l, "userspace-timestamp="))
2382 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
10717a1a 2383 else if (startswith(l, "finish-timestamp="))
799fd0fd 2384 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
718db961
LP		 2385 else if (startswith(l, "security-start-timestamp="))
2386 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2387 else if (startswith(l, "security-finish-timestamp="))
2388 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2389 else if (startswith(l, "generators-start-timestamp="))
2390 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2391 else if (startswith(l, "generators-finish-timestamp="))
2392 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2393 else if (startswith(l, "units-load-start-timestamp="))
2394 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2395 else if (startswith(l, "units-load-finish-timestamp="))
2396 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
4a9fd066
OS		 2397 else if (startswith(l, "env=")) {
2398 _cleanup_free_ char *uce = NULL;
2399 char **e;
2400
527b7a42
LP		 2401 r = cunescape(l + 4, UNESCAPE_RELAX, &uce);
2402 if (r < 0)
4a9fd066 2403 goto finish;
4a9fd066
OS		 2404
2405 e = strv_env_set(m->environment, uce);
2406 if (!e) {
2407 r = -ENOMEM;
2408 goto finish;
2409 }
2410
2411 strv_free(m->environment);
2412 m->environment = e;
e3dd987c 2413
d86f9d52
LP		 2414 } else if (startswith(l, "notify-fd=")) {
2415 int fd;
2416
2417 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2418 log_debug("Failed to parse notify fd: %s", l + 10);
d86f9d52 2419 else {
03e334a1
LP		 2420 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2421 safe_close(m->notify_fd);
d86f9d52
LP		 2422 m->notify_fd = fdset_remove(fds, fd);
2423 }
2424
2425 } else if (startswith(l, "notify-socket=")) {
2426 char *n;
2427
2428 n = strdup(l+14);
2429 if (!n) {
2430 r = -ENOMEM;
2431 goto finish;
2432 }
2433
2434 free(m->notify_socket);
2435 m->notify_socket = n;
2436
e3dd987c
LP		 2437 } else if (startswith(l, "kdbus-fd=")) {
2438 int fd;
2439
8bf9fcf4 2440 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
e5035a27 2441 log_debug("Failed to parse kdbus fd: %s", l + 9);
e3dd987c 2442 else {
03e334a1 2443 safe_close(m->kdbus_fd);
e3dd987c
LP		 2444 m->kdbus_fd = fdset_remove(fds, fd);
2445 }
2446
230314d7
LP		 2447 } else {
2448 int k;
2449
2450 k = bus_track_deserialize_item(&m->deserialized_subscribed, l);
2451 if (k < 0)
2452 log_debug_errno(k, "Failed to deserialize bus tracker object: %m");
2453 else if (k == 0)
2454 log_debug("Unknown serialization item '%s'", l);
2455 }
10f8e83c
LP		 2456 }
2457
a16e1123
LP		 2458 for (;;) {
2459 Unit *u;
2460 char name[UNIT_NAME_MAX+2];
2461
2462 /* Start marker */
2463 if (!fgets(name, sizeof(name), f)) {
2464 if (feof(f))
10f8e83c
LP		 2465 r = 0;
2466 else
2467 r = -errno;
a16e1123 2468
82c64bf5 2469 goto finish;
a16e1123
LP		 2470 }
2471
2472 char_array_0(name);
2473
bd0af849
ZJS		 2474 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2475 if (r < 0)
82c64bf5 2476 goto finish;
a16e1123 2477
01e10de3
LP		 2478 r = unit_deserialize(u, f, fds);
2479 if (r < 0)
82c64bf5 2480 goto finish;
a16e1123
LP		 2481 }
2482
10f8e83c 2483finish:
145b1f79 2484 if (ferror(f))
82c64bf5 2485 r = -EIO;
a16e1123 2486
a7556052
LP		 2487 assert(m->n_reloading > 0);
2488 m->n_reloading --;
82c64bf5
LP		 2489
2490 return r;
a16e1123
LP		 2491}
2492
2493int manager_reload(Manager *m) {
2494 int r, q;
51d122af
ZJS		 2495 _cleanup_fclose_ FILE *f = NULL;
2496 _cleanup_fdset_free_ FDSet *fds = NULL;
a16e1123
LP		 2497
2498 assert(m);
2499
07719a21
LP		 2500 r = manager_open_serialization(m, &f);
2501 if (r < 0)
a16e1123
LP		 2502 return r;
2503
a7556052 2504 m->n_reloading ++;
718db961 2505 bus_manager_send_reloading(m, true);
38c52d46 2506
07719a21
LP		 2507 fds = fdset_new();
2508 if (!fds) {
a7556052 2509 m->n_reloading --;
51d122af 2510 return -ENOMEM;
a16e1123
LP		 2511 }
2512
b3680f49 2513 r = manager_serialize(m, f, fds, false);
07719a21 2514 if (r < 0) {
a7556052 2515 m->n_reloading --;
51d122af 2516 return r;
38c52d46 2517 }
a16e1123
LP		 2518
2519 if (fseeko(f, 0, SEEK_SET) < 0) {
a7556052 2520 m->n_reloading --;
51d122af 2521 return -errno;
a16e1123
LP		 2522 }
2523
2524 /* From here on there is no way back. */
2525 manager_clear_jobs_and_units(m);
5a1e9937 2526 manager_undo_generators(m);
84e3543e 2527 lookup_paths_free(&m->lookup_paths);
2ded0c04 2528
07719a21 2529 /* Find new unit paths */
e801700e
ZJS		 2530 q = manager_run_generators(m);
2531 if (q < 0 && r >= 0)
2532 r = q;
5a1e9937 2533
07719a21
LP		 2534 q = lookup_paths_init(
2535 &m->lookup_paths, m->running_as, true,
12ed81d9 2536 NULL,
07719a21
LP		 2537 m->generator_unit_path,
2538 m->generator_unit_path_early,
2539 m->generator_unit_path_late);
e801700e 2540 if (q < 0 && r >= 0)
07719a21
LP		 2541 r = q;
2542
5a1e9937
LP		 2543 manager_build_unit_path_cache(m);
2544
a16e1123 2545 /* First, enumerate what we can from all config files */
07719a21 2546 q = manager_enumerate(m);
e801700e 2547 if (q < 0 && r >= 0)
a16e1123
LP		 2548 r = q;
2549
2550 /* Second, deserialize our stored data */
07719a21 2551 q = manager_deserialize(m, f, fds);
e801700e 2552 if (q < 0 && r >= 0)
a16e1123
LP		 2553 r = q;
2554
2555 fclose(f);
2556 f = NULL;
2557
a2cc4a6c
ZJS		 2558 /* Re-register notify_fd as event source */
2559 q = manager_setup_notify(m);
e801700e 2560 if (q < 0 && r >= 0)
a2cc4a6c
ZJS		 2561 r = q;
2562
a16e1123 2563 /* Third, fire things up! */
007c6337 2564 manager_coldplug(m);
a16e1123 2565
a7556052
LP		 2566 assert(m->n_reloading > 0);
2567 m->n_reloading--;
9f611ad8 2568
71445ae7
LP		 2569 m->send_reloading_done = true;
2570
a16e1123
LP		 2571 return r;
2572}
2573
c17ec25e
MS		 2574bool manager_is_reloading_or_reexecuting(Manager *m) {
2575 assert(m);
2576
2577 return m->n_reloading != 0;
2578}
2579
fdf20a31 2580void manager_reset_failed(Manager *m) {
5632e374
LP		 2581 Unit *u;
2582 Iterator i;
2583
2584 assert(m);
2585
2586 HASHMAP_FOREACH(u, m->units, i)
fdf20a31 2587 unit_reset_failed(u);
5632e374
LP		 2588}
2589
31afa0a4 2590bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
8f6df3fa
LP		 2591 Unit *u;
2592
2593 assert(m);
2594 assert(name);
2595
2596 /* Returns true if the unit is inactive or going down */
bd0af849
ZJS		 2597 u = manager_get_unit(m, name);
2598 if (!u)
8f6df3fa
LP		 2599 return true;
2600
31afa0a4 2601 return unit_inactive_or_pending(u);
8f6df3fa
LP		 2602}
2603
56dacdbc 2604static void manager_notify_finished(Manager *m) {
7ceba241 2605 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
915b3753 2606 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
b0c918b9 2607
56dacdbc 2608 if (m->test_run)
b0c918b9
LP		 2609 return;
2610
75f86906 2611 if (m->running_as == MANAGER_SYSTEM && detect_container() <= 0) {
e03ae661 2612
915b3753
LP		 2613 /* Note that m->kernel_usec.monotonic is always at 0,
2614 * and m->firmware_usec.monotonic and
2615 * m->loader_usec.monotonic should be considered
2616 * negative values. */
2617
7ceba241
LP		 2618 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2619 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
915b3753 2620 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
7ceba241 2621 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
18fa6b27 2622
e9ddabc2 2623 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
18fa6b27 2624
915b3753
LP		 2625 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2626 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
18fa6b27 2627
e12919e8 2628 log_struct(LOG_INFO,
e2cc6eca 2629 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8
LP		 2630 "KERNEL_USEC="USEC_FMT, kernel_usec,
2631 "INITRD_USEC="USEC_FMT, initrd_usec,
2632 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2633 LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2634 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2635 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2636 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2637 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2638 NULL);
18fa6b27 2639 } else {
915b3753 2640 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
18fa6b27
LP		 2641 initrd_usec = 0;
2642
81270860 2643 log_struct(LOG_INFO,
e2cc6eca 2644 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2645 "KERNEL_USEC="USEC_FMT, kernel_usec,
ccd06097 2646 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2647 LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.",
2648 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2649 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2650 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
81270860 2651 NULL);
e12919e8
LP		 2652 }
2653 } else {
2654 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2655 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2656
2657 log_struct(LOG_INFO,
e2cc6eca 2658 LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
e12919e8 2659 "USERSPACE_USEC="USEC_FMT, userspace_usec,
e2cc6eca
LP		 2660 LOG_MESSAGE("Startup finished in %s.",
2661 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)),
e12919e8 2662 NULL);
18fa6b27 2663 }
b0c918b9 2664
718db961 2665 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
530345e7
LP		 2666
2667 sd_notifyf(false,
af4ec430
LP		 2668 "READY=1\n"
2669 "STATUS=Startup finished in %s.",
2fa4092c 2670 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
b0c918b9
LP		 2671}
2672
56dacdbc 2673void manager_check_finished(Manager *m) {
56dacdbc
ZJS		 2674 assert(m);
2675
aad1976f
LP		 2676 if (m->n_reloading > 0)
2677 return;
2678
9771b62d
LP		 2679 /* Verify that we are actually running currently. Initially
2680 * the exit code is set to invalid, and during operation it is
2681 * then set to MANAGER_OK */
2682 if (m->exit_code != MANAGER_OK)
2683 return;
2684
56dacdbc 2685 if (hashmap_size(m->jobs) > 0) {
56dacdbc 2686 if (m->jobs_in_progress_event_source)
2ae56591 2687 /* Ignore any failure, this is only for feedback */
e7ab4d1a 2688 (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
56dacdbc
ZJS		 2689
2690 return;
2691 }
2692
2693 manager_flip_auto_status(m, false);
2694
2695 /* Notify Type=idle units that we are done now */
56dacdbc
ZJS		 2696 manager_close_idle_pipe(m);
2697
2698 /* Turn off confirm spawn now */
2699 m->confirm_spawn = false;
2700
2701 /* No need to update ask password status when we're going non-interactive */
2702 manager_close_ask_password(m);
2703
2704 /* This is no longer the first boot */
2705 manager_set_first_boot(m, false);
2706
2707 if (dual_timestamp_is_set(&m->finish_timestamp))
2708 return;
2709
2710 dual_timestamp_get(&m->finish_timestamp);
2711
2712 manager_notify_finished(m);
2713
e7ab4d1a 2714 manager_invalidate_startup_units(m);
56dacdbc
ZJS		 2715}
2716
07719a21
LP		 2717static int create_generator_dir(Manager *m, char **generator, const char *name) {
2718 char *p;
2719 int r;
2720
2721 assert(m);
2722 assert(generator);
2723 assert(name);
2724
2725 if (*generator)
2726 return 0;
2727
b2c23da8 2728 if (m->running_as == MANAGER_SYSTEM && getpid() == 1) {
fcc81ea3 2729 /* systemd --system, not running --test */
07719a21
LP		 2730
2731 p = strappend("/run/systemd/", name);
0d0f0c50
SL		 2732 if (!p)
2733 return log_oom();
07719a21 2734
fcc81ea3
KS		 2735 r = mkdir_p_label(p, 0755);
2736 if (r < 0) {
c33b3297 2737 log_error_errno(r, "Failed to create generator directory %s: %m", p);
fcc81ea3
KS		 2738 free(p);
2739 return r;
2740 }
b2c23da8 2741 } else if (m->running_as == MANAGER_USER) {
fcc81ea3
KS		 2742 const char *s = NULL;
2743
2744 s = getenv("XDG_RUNTIME_DIR");
2745 if (!s)
2746 return -EINVAL;
2747 p = strjoin(s, "/systemd/", name, NULL);
2748 if (!p)
2749 return log_oom();
2750
d2e54fae 2751 r = mkdir_p_label(p, 0755);
07719a21 2752 if (r < 0) {
c33b3297 2753 log_error_errno(r, "Failed to create generator directory %s: %m", p);
07719a21
LP		 2754 free(p);
2755 return r;
2756 }
2757 } else {
fcc81ea3
KS		 2758 /* systemd --system --test */
2759
b7def684 2760 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
0d0f0c50
SL		 2761 if (!p)
2762 return log_oom();
07719a21
LP		 2763
2764 if (!mkdtemp(p)) {
56f64d95 2765 log_error_errno(errno, "Failed to create generator directory %s: %m",
7ad94c71 2766 p);
34bf0281 2767 free(p);
07719a21
LP		 2768 return -errno;
2769 }
2770 }
2771
2772 *generator = p;
2773 return 0;
2774}
2775
2776static void trim_generator_dir(Manager *m, char **generator) {
2777 assert(m);
2778 assert(generator);
2779
2780 if (!*generator)
2781 return;
2782
ece174c5 2783 if (rmdir(*generator) >= 0)
a1e58e8e 2784 *generator = mfree(*generator);
07719a21
LP		 2785
2786 return;
2787}
2788
e801700e 2789static int manager_run_generators(Manager *m) {
f42348ac 2790 _cleanup_strv_free_ char **paths = NULL;
07719a21 2791 const char *argv[5];
e801700e 2792 char **path;
07719a21 2793 int r;
5a1e9937
LP		 2794
2795 assert(m);
2796
0d8c31ff 2797 if (m->test_run)
e801700e 2798 return 0;
0d8c31ff 2799
e801700e
ZJS		 2800 paths = generator_paths(m->running_as);
2801 if (!paths)
2802 return log_oom();
5a1e9937 2803
49681057
ZJS		 2804 /* Optimize by skipping the whole process by not creating output directories
2805 * if no generators are found. */
e801700e
ZJS		 2806 STRV_FOREACH(path, paths) {
2807 r = access(*path, F_OK);
2808 if (r == 0)
2809 goto found;
49681057 2810 if (errno != ENOENT)
e801700e 2811 log_warning_errno(errno, "Failed to open generator directory %s: %m", *path);
5a1e9937 2812 }
e801700e 2813 return 0;
5a1e9937 2814
e801700e 2815 found:
07719a21
LP		 2816 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2817 if (r < 0)
2818 goto finish;
f1d19aa4 2819
07719a21
LP		 2820 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2821 if (r < 0)
2822 goto finish;
5a1e9937 2823
07719a21
LP		 2824 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2825 if (r < 0)
2826 goto finish;
5a1e9937 2827
83cc030f
LP		 2828 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2829 argv[1] = m->generator_unit_path;
07719a21
LP		 2830 argv[2] = m->generator_unit_path_early;
2831 argv[3] = m->generator_unit_path_late;
2832 argv[4] = NULL;
5a1e9937 2833
718db961 2834 RUN_WITH_UMASK(0022)
e801700e 2835 execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv);
5a1e9937 2836
718db961 2837finish:
07719a21
LP		 2838 trim_generator_dir(m, &m->generator_unit_path);
2839 trim_generator_dir(m, &m->generator_unit_path_early);
2840 trim_generator_dir(m, &m->generator_unit_path_late);
e801700e 2841 return r;
5a1e9937
LP		 2842}
2843
07719a21 2844static void remove_generator_dir(Manager *m, char **generator) {
5a1e9937 2845 assert(m);
07719a21 2846 assert(generator);
5a1e9937 2847
07719a21 2848 if (!*generator)
5a1e9937
LP		 2849 return;
2850
07719a21 2851 strv_remove(m->lookup_paths.unit_path, *generator);
c6878637 2852 (void) rm_rf(*generator, REMOVE_ROOT);
5a1e9937 2853
a1e58e8e 2854 *generator = mfree(*generator);
07719a21
LP		 2855}
2856
e801700e 2857static void manager_undo_generators(Manager *m) {
07719a21
LP		 2858 assert(m);
2859
2860 remove_generator_dir(m, &m->generator_unit_path);
2861 remove_generator_dir(m, &m->generator_unit_path_early);
2862 remove_generator_dir(m, &m->generator_unit_path_late);
5a1e9937
LP		 2863}
2864
718db961
LP		 2865int manager_environment_add(Manager *m, char **minus, char **plus) {
2866 char **a = NULL, **b = NULL, **l;
97d0e5f8 2867 assert(m);
bcd8e6d1 2868
718db961 2869 l = m->environment;
bcd8e6d1 2870
718db961
LP		 2871 if (!strv_isempty(minus)) {
2872 a = strv_env_delete(l, 1, minus);
2873 if (!a)
2874 return -ENOMEM;
2875
2876 l = a;
2877 }
2878
2879 if (!strv_isempty(plus)) {
2880 b = strv_env_merge(2, l, plus);
aa9f8a30
AH		 2881 if (!b) {
2882 strv_free(a);
718db961 2883 return -ENOMEM;
aa9f8a30 2884 }
bcd8e6d1 2885
718db961
LP		 2886 l = b;
2887 }
2888
2889 if (m->environment != l)
2890 strv_free(m->environment);
2891 if (a != l)
2892 strv_free(a);
2893 if (b != l)
2894 strv_free(b);
2895
f069efb4
LP		 2896 m->environment = l;
2897 manager_clean_environment(m);
2898 strv_sort(m->environment);
2899
97d0e5f8
UTL		 2900 return 0;
2901}
2902
c93ff2e9
FC		 2903int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2904 int i;
2905
2906 assert(m);
2907
517d56b1 2908 for (i = 0; i < _RLIMIT_MAX; i++) {
07719a21
LP		 2909 if (!default_rlimit[i])
2910 continue;
c93ff2e9 2911
07719a21
LP		 2912 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2913 if (!m->rlimit[i])
2914 return -ENOMEM;
c93ff2e9
FC		 2915 }
2916
2917 return 0;
2918}
2919
4cfa2c99 2920void manager_recheck_journal(Manager *m) {
f1dd0c3f
LP		 2921 Unit *u;
2922
2923 assert(m);
2924
b2c23da8 2925 if (m->running_as != MANAGER_SYSTEM)
f1dd0c3f
LP		 2926 return;
2927
731a676c
LP		 2928 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2929 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
4cfa2c99 2930 log_close_journal();
731a676c 2931 return;
f1dd0c3f
LP		 2932 }
2933
731a676c
LP		 2934 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2935 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
4cfa2c99 2936 log_close_journal();
731a676c
LP		 2937 return;
2938 }
f1dd0c3f 2939
731a676c
LP		 2940 /* Hmm, OK, so the socket is fully up and the service is up
2941 * too, then let's make use of the thing. */
f1dd0c3f
LP		 2942 log_open();
2943}
2944
d450b6f2 2945void manager_set_show_status(Manager *m, ShowStatus mode) {
27d340c7 2946 assert(m);
d450b6f2 2947 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
27d340c7 2948
b2c23da8 2949 if (m->running_as != MANAGER_SYSTEM)
27d340c7
LP		 2950 return;
2951
d450b6f2 2952 m->show_status = mode;
27d340c7 2953
d450b6f2 2954 if (mode > 0)
27d340c7
LP		 2955 touch("/run/systemd/show-status");
2956 else
2957 unlink("/run/systemd/show-status");
2958}
2959
127d5fd1 2960static bool manager_get_show_status(Manager *m, StatusType type) {
27d340c7
LP		 2961 assert(m);
2962
b2c23da8 2963 if (m->running_as != MANAGER_SYSTEM)
27d340c7
LP		 2964 return false;
2965
31a7eb86
ZJS		 2966 if (m->no_console_output)
2967 return false;
2968
d81afec1 2969 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
08510627
LP		 2970 return false;
2971
e46b13c8 2972 /* If we cannot find out the status properly, just proceed. */
ebc5788e 2973 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
e46b13c8
ZJS		 2974 return false;
2975
d450b6f2 2976 if (m->show_status > 0)
27d340c7
LP		 2977 return true;
2978
031886ed 2979 return false;
27d340c7 2980}
68b29a9f 2981
e2680723
LP		 2982void manager_set_first_boot(Manager *m, bool b) {
2983 assert(m);
2984
b2c23da8 2985 if (m->running_as != MANAGER_SYSTEM)
e2680723
LP		 2986 return;
2987
ae2a2c53
LP		 2988 if (m->first_boot != (int) b) {
2989 if (b)
2990 (void) touch("/run/systemd/first-boot");
2991 else
2992 (void) unlink("/run/systemd/first-boot");
2993 }
e2680723 2994
ae2a2c53 2995 m->first_boot = b;
e2680723
LP		 2996}
2997
127d5fd1 2998void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
25cee550
MS		 2999 va_list ap;
3000
cb6531be
ZJS		 3001 /* If m is NULL, assume we're after shutdown and let the messages through. */
3002
3003 if (m && !manager_get_show_status(m, type))
25cee550
MS		 3004 return;
3005
03b717a3
MS		 3006 /* XXX We should totally drop the check for ephemeral here
3007 * and thus effectively make 'Type=idle' pointless. */
cb6531be 3008 if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0)
03b717a3
MS		 3009 return;
3010
25cee550 3011 va_start(ap, format);
127d5fd1 3012 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
25cee550
MS		 3013 va_end(ap);
3014}
3015
a57f7e2c
LP		 3016Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
3017 char p[strlen(path)+1];
3018
3019 assert(m);
3020 assert(path);
3021
3022 strcpy(p, path);
3023 path_kill_slashes(p);
3024
3025 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3026}
e66cf1a3
LP		 3027
3028const char *manager_get_runtime_prefix(Manager *m) {
f755e3b7 3029 assert(m);
e66cf1a3 3030
b2c23da8 3031 return m->running_as == MANAGER_SYSTEM ?
e66cf1a3
LP		 3032 "/run" :
3033 getenv("XDG_RUNTIME_DIR");
3034}
f755e3b7 3035
5269eb6b 3036int manager_update_failed_units(Manager *m, Unit *u, bool failed) {
03455c28 3037 unsigned size;
5269eb6b 3038 int r;
03455c28
LDM		 3039
3040 assert(m);
3041 assert(u->manager == m);
3042
3043 size = set_size(m->failed_units);
3044
9fff8981 3045 if (failed) {
5269eb6b
LP		 3046 r = set_ensure_allocated(&m->failed_units, NULL);
3047 if (r < 0)
3048 return log_oom();
3049
9fff8981 3050 if (set_put(m->failed_units, u) < 0)
5269eb6b 3051 return log_oom();
9fff8981 3052 } else
5269eb6b 3053 (void) set_remove(m->failed_units, u);
03455c28
LDM		 3054
3055 if (set_size(m->failed_units) != size)
3056 bus_manager_send_change_signal(m);
5269eb6b
LP		 3057
3058 return 0;
03455c28
LDM		 3059}
3060
f755e3b7
LP		 3061ManagerState manager_state(Manager *m) {
3062 Unit *u;
3063
3064 assert(m);
3065
3066 /* Did we ever finish booting? If not then we are still starting up */
d81afec1
LP		 3067 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3068
3069 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3070 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3071 return MANAGER_INITIALIZING;
3072
f755e3b7 3073 return MANAGER_STARTING;
d81afec1 3074 }
f755e3b7
LP		 3075
3076 /* Is the special shutdown target queued? If so, we are in shutdown state */
3077 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3078 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3079 return MANAGER_STOPPING;
3080
3081 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3082 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3083 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3084 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3085 return MANAGER_MAINTENANCE;
3086
3087 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3088 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3089 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3090 return MANAGER_MAINTENANCE;
3091
3092 /* Are there any failed units? If so, we are in degraded mode */
3093 if (set_size(m->failed_units) > 0)
3094 return MANAGER_DEGRADED;
3095
3096 return MANAGER_RUNNING;
3097}
3098
3099static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
d81afec1 3100 [MANAGER_INITIALIZING] = "initializing",
f755e3b7
LP		 3101 [MANAGER_STARTING] = "starting",
3102 [MANAGER_RUNNING] = "running",
3103 [MANAGER_DEGRADED] = "degraded",
3104 [MANAGER_MAINTENANCE] = "maintenance",
3105 [MANAGER_STOPPING] = "stopping",
3106};
3107
3108DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
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