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sd-bus: sync with kdbus upstream (ABI break)
[thirdparty/systemd.git] / src / core / manager.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
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
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
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
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <assert.h>
23 #include <errno.h>
24 #include <string.h>
25 #include <signal.h>
26 #include <sys/wait.h>
27 #include <unistd.h>
28 #include <sys/inotify.h>
29 #include <sys/epoll.h>
30 #include <sys/poll.h>
31 #include <sys/reboot.h>
32 #include <sys/ioctl.h>
33 #include <linux/kd.h>
34 #include <termios.h>
35 #include <fcntl.h>
36 #include <sys/types.h>
37 #include <sys/stat.h>
38 #include <dirent.h>
39 #include <sys/timerfd.h>
40
41 #ifdef HAVE_AUDIT
42 #include <libaudit.h>
43 #endif
44
45 #include "sd-daemon.h"
46 #include "sd-id128.h"
47 #include "sd-messages.h"
48
49 #include "manager.h"
50 #include "transaction.h"
51 #include "hashmap.h"
52 #include "macro.h"
53 #include "strv.h"
54 #include "log.h"
55 #include "util.h"
56 #include "mkdir.h"
57 #include "ratelimit.h"
58 #include "locale-setup.h"
59 #include "mount-setup.h"
60 #include "unit-name.h"
61 #include "missing.h"
62 #include "path-lookup.h"
63 #include "special.h"
64 #include "exit-status.h"
65 #include "virt.h"
66 #include "watchdog.h"
67 #include "cgroup-util.h"
68 #include "path-util.h"
69 #include "audit-fd.h"
70 #include "boot-timestamps.h"
71 #include "env-util.h"
72 #include "bus-errors.h"
73 #include "bus-error.h"
74 #include "bus-util.h"
75 #include "dbus.h"
76 #include "dbus-unit.h"
77 #include "dbus-job.h"
78 #include "dbus-manager.h"
79 #include "bus-kernel.h"
80 #include "time-util.h"
81
82 /* Initial delay and the interval for printing status messages about running jobs */
83 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
84 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
85 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
86
87 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
88 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
89 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
90 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
91 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata);
92 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata);
93
94 static int manager_watch_jobs_in_progress(Manager *m) {
95 usec_t next;
96
97 assert(m);
98
99 if (m->jobs_in_progress_event_source)
100 return 0;
101
102 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC;
103 return sd_event_add_time(
104 m->event,
105 &m->jobs_in_progress_event_source,
106 CLOCK_MONOTONIC,
107 next, 0,
108 manager_dispatch_jobs_in_progress, m);
109 }
110
111 #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED_ON)-1) + sizeof(ANSI_HIGHLIGHT_RED_ON)-1 + 2*(sizeof(ANSI_HIGHLIGHT_OFF)-1))
112
113 static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
114 char *p = buffer;
115
116 assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
117 assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
118
119 if (pos > 1) {
120 if (pos > 2)
121 p = mempset(p, ' ', pos-2);
122 p = stpcpy(p, ANSI_RED_ON);
123 *p++ = '*';
124 }
125
126 if (pos > 0 && pos <= width) {
127 p = stpcpy(p, ANSI_HIGHLIGHT_RED_ON);
128 *p++ = '*';
129 }
130
131 p = stpcpy(p, ANSI_HIGHLIGHT_OFF);
132
133 if (pos < width) {
134 p = stpcpy(p, ANSI_RED_ON);
135 *p++ = '*';
136 if (pos < width-1)
137 p = mempset(p, ' ', width-1-pos);
138 strcpy(p, ANSI_HIGHLIGHT_OFF);
139 }
140 }
141
142 void manager_flip_auto_status(Manager *m, bool enable) {
143 assert(m);
144
145 if (enable) {
146 if (m->show_status == SHOW_STATUS_AUTO)
147 manager_set_show_status(m, SHOW_STATUS_TEMPORARY);
148 } else {
149 if (m->show_status == SHOW_STATUS_TEMPORARY)
150 manager_set_show_status(m, SHOW_STATUS_AUTO);
151 }
152 }
153
154 static void manager_print_jobs_in_progress(Manager *m) {
155 _cleanup_free_ char *job_of_n = NULL;
156 Iterator i;
157 Job *j;
158 unsigned counter = 0, print_nr;
159 char cylon[6 + CYLON_BUFFER_EXTRA + 1];
160 unsigned cylon_pos;
161 char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit";
162 uint64_t x;
163
164 assert(m);
165
166 manager_flip_auto_status(m, true);
167
168 print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
169
170 HASHMAP_FOREACH(j, m->jobs, i)
171 if (j->state == JOB_RUNNING && counter++ == print_nr)
172 break;
173
174 /* m->n_running_jobs must be consistent with the contents of m->jobs,
175 * so the above loop must have succeeded in finding j. */
176 assert(counter == print_nr + 1);
177 assert(j);
178
179 cylon_pos = m->jobs_in_progress_iteration % 14;
180 if (cylon_pos >= 8)
181 cylon_pos = 14 - cylon_pos;
182 draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
183
184 m->jobs_in_progress_iteration++;
185
186 if (m->n_running_jobs > 1)
187 if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
188 job_of_n = NULL;
189
190 format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC);
191 if (job_get_timeout(j, &x) > 0)
192 format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC);
193
194 manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon,
195 "%sA %s job is running for %s (%s / %s)",
196 strempty(job_of_n),
197 job_type_to_string(j->type),
198 unit_description(j->unit),
199 time, limit);
200
201 }
202
203 static int have_ask_password(void) {
204 _cleanup_closedir_ DIR *dir;
205
206 dir = opendir("/run/systemd/ask-password");
207 if (!dir) {
208 if (errno == ENOENT)
209 return false;
210 else
211 return -errno;
212 }
213
214 for (;;) {
215 struct dirent *de;
216
217 errno = 0;
218 de = readdir(dir);
219 if (!de && errno != 0)
220 return -errno;
221 if (!de)
222 return false;
223
224 if (startswith(de->d_name, "ask."))
225 return true;
226 }
227 }
228
229 static int manager_dispatch_ask_password_fd(sd_event_source *source,
230 int fd, uint32_t revents, void *userdata) {
231 Manager *m = userdata;
232
233 assert(m);
234
235 flush_fd(fd);
236
237 m->have_ask_password = have_ask_password();
238 if (m->have_ask_password < 0)
239 /* Log error but continue. Negative have_ask_password
240 * is treated as unknown status. */
241 log_error("Failed to list /run/systemd/ask-password: %s", strerror(m->have_ask_password));
242
243 return 0;
244 }
245
246 static void manager_close_ask_password(Manager *m) {
247 assert(m);
248
249 m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
250 m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
251 m->have_ask_password = -EINVAL;
252 }
253
254 static int manager_check_ask_password(Manager *m) {
255 int r;
256
257 assert(m);
258
259 if (!m->ask_password_event_source) {
260 assert(m->ask_password_inotify_fd < 0);
261
262 mkdir_p_label("/run/systemd/ask-password", 0755);
263
264 m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
265 if (m->ask_password_inotify_fd < 0) {
266 log_error("inotify_init1() failed: %m");
267 return -errno;
268 }
269
270 if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
271 log_error("Failed to add watch on /run/systemd/ask-password: %m");
272 manager_close_ask_password(m);
273 return -errno;
274 }
275
276 r = sd_event_add_io(m->event, &m->ask_password_event_source,
277 m->ask_password_inotify_fd, EPOLLIN,
278 manager_dispatch_ask_password_fd, m);
279 if (r < 0) {
280 log_error("Failed to add event source for /run/systemd/ask-password: %m");
281 manager_close_ask_password(m);
282 return -errno;
283 }
284
285 /* Queries might have been added meanwhile... */
286 manager_dispatch_ask_password_fd(m->ask_password_event_source,
287 m->ask_password_inotify_fd, EPOLLIN, m);
288 }
289
290 return m->have_ask_password;
291 }
292
293 static int manager_watch_idle_pipe(Manager *m) {
294 int r;
295
296 assert(m);
297
298 if (m->idle_pipe_event_source)
299 return 0;
300
301 if (m->idle_pipe[2] < 0)
302 return 0;
303
304 r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m);
305 if (r < 0) {
306 log_error("Failed to watch idle pipe: %s", strerror(-r));
307 return r;
308 }
309
310 return 0;
311 }
312
313 static void manager_close_idle_pipe(Manager *m) {
314 assert(m);
315
316 safe_close_pair(m->idle_pipe);
317 safe_close_pair(m->idle_pipe + 2);
318 }
319
320 static int manager_setup_time_change(Manager *m) {
321 int r;
322
323 /* We only care for the cancellation event, hence we set the
324 * timeout to the latest possible value. */
325 struct itimerspec its = {
326 .it_value.tv_sec = TIME_T_MAX,
327 };
328
329 assert(m);
330 assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
331
332 if (m->test_run)
333 return 0;
334
335 /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
336 * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
337
338 m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
339 if (m->time_change_fd < 0) {
340 log_error("Failed to create timerfd: %m");
341 return -errno;
342 }
343
344 if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
345 log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
346 m->time_change_fd = safe_close(m->time_change_fd);
347 return 0;
348 }
349
350 r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m);
351 if (r < 0) {
352 log_error("Failed to create time change event source: %s", strerror(-r));
353 return r;
354 }
355
356 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
357
358 return 0;
359 }
360
361 static int enable_special_signals(Manager *m) {
362 _cleanup_close_ int fd = -1;
363
364 assert(m);
365
366 /* Enable that we get SIGINT on control-alt-del. In containers
367 * this will fail with EPERM (older) or EINVAL (newer), so
368 * ignore that. */
369 if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
370 log_warning("Failed to enable ctrl-alt-del handling: %m");
371
372 fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
373 if (fd < 0) {
374 /* Support systems without virtual console */
375 if (fd != -ENOENT)
376 log_warning("Failed to open /dev/tty0: %m");
377 } else {
378 /* Enable that we get SIGWINCH on kbrequest */
379 if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
380 log_warning("Failed to enable kbrequest handling: %m");
381 }
382
383 return 0;
384 }
385
386 static int manager_setup_signals(Manager *m) {
387 struct sigaction sa = {
388 .sa_handler = SIG_DFL,
389 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
390 };
391 sigset_t mask;
392 int r;
393
394 assert(m);
395
396 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
397
398 /* We make liberal use of realtime signals here. On
399 * Linux/glibc we have 30 of them (with the exception of Linux
400 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
401 * (aka SIGRTMAX). */
402
403 assert_se(sigemptyset(&mask) == 0);
404 sigset_add_many(&mask,
405 SIGCHLD, /* Child died */
406 SIGTERM, /* Reexecute daemon */
407 SIGHUP, /* Reload configuration */
408 SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
409 SIGUSR2, /* systemd: dump status */
410 SIGINT, /* Kernel sends us this on control-alt-del */
411 SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
412 SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
413
414 SIGRTMIN+0, /* systemd: start default.target */
415 SIGRTMIN+1, /* systemd: isolate rescue.target */
416 SIGRTMIN+2, /* systemd: isolate emergency.target */
417 SIGRTMIN+3, /* systemd: start halt.target */
418 SIGRTMIN+4, /* systemd: start poweroff.target */
419 SIGRTMIN+5, /* systemd: start reboot.target */
420 SIGRTMIN+6, /* systemd: start kexec.target */
421
422 /* ... space for more special targets ... */
423
424 SIGRTMIN+13, /* systemd: Immediate halt */
425 SIGRTMIN+14, /* systemd: Immediate poweroff */
426 SIGRTMIN+15, /* systemd: Immediate reboot */
427 SIGRTMIN+16, /* systemd: Immediate kexec */
428
429 /* ... space for more immediate system state changes ... */
430
431 SIGRTMIN+20, /* systemd: enable status messages */
432 SIGRTMIN+21, /* systemd: disable status messages */
433 SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
434 SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
435 SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
436
437 /* .. one free signal here ... */
438
439 #if !defined(__hppa64__) && !defined(__hppa__)
440 /* Apparently Linux on hppa has fewer RT
441 * signals (SIGRTMAX is SIGRTMIN+25 there),
442 * hence let's not try to make use of them
443 * here. Since these commands are accessible
444 * by different means and only really a safety
445 * net, the missing functionality on hppa
446 * shouldn't matter. */
447
448 SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
449 SIGRTMIN+27, /* systemd: set log target to console */
450 SIGRTMIN+28, /* systemd: set log target to kmsg */
451 SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete)*/
452
453 /* ... one free signal here SIGRTMIN+30 ... */
454 #endif
455 -1);
456 assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
457
458 m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
459 if (m->signal_fd < 0)
460 return -errno;
461
462 r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m);
463 if (r < 0)
464 return r;
465
466 /* Process signals a bit earlier than the rest of things, but
467 * later than notify_fd processing, so that the notify
468 * processing can still figure out to which process/service a
469 * message belongs, before we reap the process. */
470 r = sd_event_source_set_priority(m->signal_event_source, -5);
471 if (r < 0)
472 return r;
473
474 if (m->running_as == SYSTEMD_SYSTEM)
475 return enable_special_signals(m);
476
477 return 0;
478 }
479
480 static void manager_clean_environment(Manager *m) {
481 assert(m);
482
483 /* Let's remove some environment variables that we
484 * need ourselves to communicate with our clients */
485 strv_env_unset_many(
486 m->environment,
487 "NOTIFY_SOCKET",
488 "MAINPID",
489 "MANAGERPID",
490 "LISTEN_PID",
491 "LISTEN_FDS",
492 "WATCHDOG_PID",
493 "WATCHDOG_USEC",
494 NULL);
495 }
496
497 static int manager_default_environment(Manager *m) {
498 assert(m);
499
500 if (m->running_as == SYSTEMD_SYSTEM) {
501 /* The system manager always starts with a clean
502 * environment for its children. It does not import
503 * the kernel or the parents exported variables.
504 *
505 * The initial passed environ is untouched to keep
506 * /proc/self/environ valid; it is used for tagging
507 * the init process inside containers. */
508 m->environment = strv_new("PATH=" DEFAULT_PATH,
509 NULL);
510
511 /* Import locale variables LC_*= from configuration */
512 locale_setup(&m->environment);
513 } else {
514 /* The user manager passes its own environment
515 * along to its children. */
516 m->environment = strv_copy(environ);
517 }
518
519 if (!m->environment)
520 return -ENOMEM;
521
522 manager_clean_environment(m);
523 strv_sort(m->environment);
524
525 return 0;
526 }
527
528 int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
529 Manager *m;
530 int r;
531
532 assert(_m);
533 assert(running_as >= 0);
534 assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
535
536 m = new0(Manager, 1);
537 if (!m)
538 return -ENOMEM;
539
540 #ifdef ENABLE_EFI
541 if (running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0)
542 boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
543 #endif
544
545 m->running_as = running_as;
546 m->exit_code = _MANAGER_EXIT_CODE_INVALID;
547 m->default_timer_accuracy_usec = USEC_PER_MINUTE;
548
549 m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
550
551 m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = -1;
552 m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
553
554 m->ask_password_inotify_fd = -1;
555 m->have_ask_password = -EINVAL; /* we don't know */
556
557 m->test_run = test_run;
558
559 r = manager_default_environment(m);
560 if (r < 0)
561 goto fail;
562
563 r = hashmap_ensure_allocated(&m->units, &string_hash_ops);
564 if (r < 0)
565 goto fail;
566
567 r = hashmap_ensure_allocated(&m->jobs, NULL);
568 if (r < 0)
569 goto fail;
570
571 r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops);
572 if (r < 0)
573 goto fail;
574
575 r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops);
576 if (r < 0)
577 goto fail;
578
579 r = set_ensure_allocated(&m->startup_units, NULL);
580 if (r < 0)
581 goto fail;
582
583 r = set_ensure_allocated(&m->failed_units, NULL);
584 if (r < 0)
585 goto fail;
586
587 r = sd_event_default(&m->event);
588 if (r < 0)
589 goto fail;
590
591 r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
592 if (r < 0)
593 goto fail;
594
595 r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE);
596 if (r < 0)
597 goto fail;
598
599 r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF);
600 if (r < 0)
601 goto fail;
602
603 r = manager_setup_signals(m);
604 if (r < 0)
605 goto fail;
606
607 r = manager_setup_cgroup(m);
608 if (r < 0)
609 goto fail;
610
611 r = manager_setup_time_change(m);
612 if (r < 0)
613 goto fail;
614
615 m->udev = udev_new();
616 if (!m->udev) {
617 r = -ENOMEM;
618 goto fail;
619 }
620
621 /* Note that we set up neither kdbus, nor the notify fd
622 * here. We do that after deserialization, since they might
623 * have gotten serialized across the reexec. */
624
625 m->taint_usr = dir_is_empty("/usr") > 0;
626
627 *_m = m;
628 return 0;
629
630 fail:
631 manager_free(m);
632 return r;
633 }
634
635 static int manager_setup_notify(Manager *m) {
636 int r;
637
638 if (m->test_run)
639 return 0;
640
641 if (m->notify_fd < 0) {
642 _cleanup_close_ int fd = -1;
643 union sockaddr_union sa = {
644 .sa.sa_family = AF_UNIX,
645 };
646 static const int one = 1;
647
648 /* First free all secondary fields */
649 free(m->notify_socket);
650 m->notify_socket = NULL;
651 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
652
653 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
654 if (fd < 0) {
655 log_error("Failed to allocate notification socket: %m");
656 return -errno;
657 }
658
659 if (m->running_as == SYSTEMD_SYSTEM)
660 m->notify_socket = strdup("/run/systemd/notify");
661 else {
662 const char *e;
663
664 e = getenv("XDG_RUNTIME_DIR");
665 if (!e) {
666 log_error("XDG_RUNTIME_DIR is not set: %m");
667 return -EINVAL;
668 }
669
670 m->notify_socket = strappend(e, "/systemd/notify");
671 }
672 if (!m->notify_socket)
673 return log_oom();
674
675 (void) mkdir_parents_label(m->notify_socket, 0755);
676 (void) unlink(m->notify_socket);
677
678 strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1);
679 r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
680 if (r < 0) {
681 log_error("bind(%s) failed: %m", sa.un.sun_path);
682 return -errno;
683 }
684
685 r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
686 if (r < 0) {
687 log_error("SO_PASSCRED failed: %m");
688 return -errno;
689 }
690
691 m->notify_fd = fd;
692 fd = -1;
693
694 log_debug("Using notification socket %s", m->notify_socket);
695 }
696
697 if (!m->notify_event_source) {
698 r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m);
699 if (r < 0) {
700 log_error("Failed to allocate notify event source: %s", strerror(-r));
701 return -errno;
702 }
703
704 /* Process signals a bit earlier than SIGCHLD, so that we can
705 * still identify to which service an exit message belongs */
706 r = sd_event_source_set_priority(m->notify_event_source, -7);
707 if (r < 0) {
708 log_error("Failed to set priority of notify event source: %s", strerror(-r));
709 return r;
710 }
711 }
712
713 return 0;
714 }
715
716 static int manager_setup_kdbus(Manager *m) {
717 #ifdef ENABLE_KDBUS
718 _cleanup_free_ char *p = NULL;
719
720 assert(m);
721
722 if (m->test_run || m->kdbus_fd >= 0)
723 return 0;
724
725 m->kdbus_fd = bus_kernel_create_bus(m->running_as == SYSTEMD_SYSTEM ? "system" : "user", m->running_as == SYSTEMD_SYSTEM, &p);
726 if (m->kdbus_fd < 0) {
727 log_debug("Failed to set up kdbus: %s", strerror(-m->kdbus_fd));
728 return m->kdbus_fd;
729 }
730
731 log_debug("Successfully set up kdbus on %s", p);
732 #endif
733
734 return 0;
735 }
736
737 static int manager_connect_bus(Manager *m, bool reexecuting) {
738 bool try_bus_connect;
739
740 assert(m);
741
742 if (m->test_run)
743 return 0;
744
745 try_bus_connect =
746 m->kdbus_fd >= 0 ||
747 reexecuting ||
748 (m->running_as == SYSTEMD_USER && getenv("DBUS_SESSION_BUS_ADDRESS"));
749
750 /* Try to connect to the busses, if possible. */
751 return bus_init(m, try_bus_connect);
752 }
753
754 static unsigned manager_dispatch_cleanup_queue(Manager *m) {
755 Unit *u;
756 unsigned n = 0;
757
758 assert(m);
759
760 while ((u = m->cleanup_queue)) {
761 assert(u->in_cleanup_queue);
762
763 unit_free(u);
764 n++;
765 }
766
767 return n;
768 }
769
770 enum {
771 GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
772 GC_OFFSET_UNSURE, /* No clue */
773 GC_OFFSET_GOOD, /* We still need this unit */
774 GC_OFFSET_BAD, /* We don't need this unit anymore */
775 _GC_OFFSET_MAX
776 };
777
778 static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
779 Iterator i;
780 Unit *other;
781 bool is_bad;
782
783 assert(u);
784
785 if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
786 u->gc_marker == gc_marker + GC_OFFSET_BAD ||
787 u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
788 return;
789
790 if (u->in_cleanup_queue)
791 goto bad;
792
793 if (unit_check_gc(u))
794 goto good;
795
796 u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
797
798 is_bad = true;
799
800 SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
801 unit_gc_sweep(other, gc_marker);
802
803 if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
804 goto good;
805
806 if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
807 is_bad = false;
808 }
809
810 if (is_bad)
811 goto bad;
812
813 /* We were unable to find anything out about this entry, so
814 * let's investigate it later */
815 u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
816 unit_add_to_gc_queue(u);
817 return;
818
819 bad:
820 /* We definitely know that this one is not useful anymore, so
821 * let's mark it for deletion */
822 u->gc_marker = gc_marker + GC_OFFSET_BAD;
823 unit_add_to_cleanup_queue(u);
824 return;
825
826 good:
827 u->gc_marker = gc_marker + GC_OFFSET_GOOD;
828 }
829
830 static unsigned manager_dispatch_gc_queue(Manager *m) {
831 Unit *u;
832 unsigned n = 0;
833 unsigned gc_marker;
834
835 assert(m);
836
837 /* log_debug("Running GC..."); */
838
839 m->gc_marker += _GC_OFFSET_MAX;
840 if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
841 m->gc_marker = 1;
842
843 gc_marker = m->gc_marker;
844
845 while ((u = m->gc_queue)) {
846 assert(u->in_gc_queue);
847
848 unit_gc_sweep(u, gc_marker);
849
850 LIST_REMOVE(gc_queue, m->gc_queue, u);
851 u->in_gc_queue = false;
852
853 n++;
854
855 if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
856 u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
857 log_debug_unit(u->id, "Collecting %s", u->id);
858 u->gc_marker = gc_marker + GC_OFFSET_BAD;
859 unit_add_to_cleanup_queue(u);
860 }
861 }
862
863 m->n_in_gc_queue = 0;
864
865 return n;
866 }
867
868 static void manager_clear_jobs_and_units(Manager *m) {
869 Unit *u;
870
871 assert(m);
872
873 while ((u = hashmap_first(m->units)))
874 unit_free(u);
875
876 manager_dispatch_cleanup_queue(m);
877
878 assert(!m->load_queue);
879 assert(!m->run_queue);
880 assert(!m->dbus_unit_queue);
881 assert(!m->dbus_job_queue);
882 assert(!m->cleanup_queue);
883 assert(!m->gc_queue);
884
885 assert(hashmap_isempty(m->jobs));
886 assert(hashmap_isempty(m->units));
887
888 m->n_on_console = 0;
889 m->n_running_jobs = 0;
890 }
891
892 void manager_free(Manager *m) {
893 UnitType c;
894 int i;
895
896 assert(m);
897
898 manager_clear_jobs_and_units(m);
899
900 for (c = 0; c < _UNIT_TYPE_MAX; c++)
901 if (unit_vtable[c]->shutdown)
902 unit_vtable[c]->shutdown(m);
903
904 /* If we reexecute ourselves, we keep the root cgroup
905 * around */
906 manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
907
908 manager_undo_generators(m);
909
910 bus_done(m);
911
912 hashmap_free(m->units);
913 hashmap_free(m->jobs);
914 hashmap_free(m->watch_pids1);
915 hashmap_free(m->watch_pids2);
916 hashmap_free(m->watch_bus);
917
918 set_free(m->startup_units);
919 set_free(m->failed_units);
920
921 sd_event_source_unref(m->signal_event_source);
922 sd_event_source_unref(m->notify_event_source);
923 sd_event_source_unref(m->time_change_event_source);
924 sd_event_source_unref(m->jobs_in_progress_event_source);
925 sd_event_source_unref(m->idle_pipe_event_source);
926 sd_event_source_unref(m->run_queue_event_source);
927
928 safe_close(m->signal_fd);
929 safe_close(m->notify_fd);
930 safe_close(m->time_change_fd);
931 safe_close(m->kdbus_fd);
932
933 manager_close_ask_password(m);
934
935 manager_close_idle_pipe(m);
936
937 udev_unref(m->udev);
938 sd_event_unref(m->event);
939
940 free(m->notify_socket);
941
942 lookup_paths_free(&m->lookup_paths);
943 strv_free(m->environment);
944
945 hashmap_free(m->cgroup_unit);
946 set_free_free(m->unit_path_cache);
947
948 free(m->switch_root);
949 free(m->switch_root_init);
950
951 for (i = 0; i < _RLIMIT_MAX; i++)
952 free(m->rlimit[i]);
953
954 assert(hashmap_isempty(m->units_requiring_mounts_for));
955 hashmap_free(m->units_requiring_mounts_for);
956
957 free(m);
958 }
959
960 int manager_enumerate(Manager *m) {
961 int r = 0, q;
962 UnitType c;
963
964 assert(m);
965
966 /* Let's ask every type to load all units from disk/kernel
967 * that it might know */
968 for (c = 0; c < _UNIT_TYPE_MAX; c++)
969 if (unit_vtable[c]->enumerate) {
970 q = unit_vtable[c]->enumerate(m);
971 if (q < 0)
972 r = q;
973 }
974
975 manager_dispatch_load_queue(m);
976 return r;
977 }
978
979 static int manager_coldplug(Manager *m) {
980 int r = 0;
981 Iterator i;
982 Unit *u;
983 char *k;
984
985 assert(m);
986
987 /* Then, let's set up their initial state. */
988 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
989 int q;
990
991 /* ignore aliases */
992 if (u->id != k)
993 continue;
994
995 q = unit_coldplug(u);
996 if (q < 0)
997 r = q;
998 }
999
1000 return r;
1001 }
1002
1003 static void manager_build_unit_path_cache(Manager *m) {
1004 char **i;
1005 _cleanup_closedir_ DIR *d = NULL;
1006 int r;
1007
1008 assert(m);
1009
1010 set_free_free(m->unit_path_cache);
1011
1012 m->unit_path_cache = set_new(&string_hash_ops);
1013 if (!m->unit_path_cache) {
1014 log_error("Failed to allocate unit path cache.");
1015 return;
1016 }
1017
1018 /* This simply builds a list of files we know exist, so that
1019 * we don't always have to go to disk */
1020
1021 STRV_FOREACH(i, m->lookup_paths.unit_path) {
1022 struct dirent *de;
1023
1024 d = opendir(*i);
1025 if (!d) {
1026 if (errno != ENOENT)
1027 log_error("Failed to open directory %s: %m", *i);
1028 continue;
1029 }
1030
1031 while ((de = readdir(d))) {
1032 char *p;
1033
1034 if (ignore_file(de->d_name))
1035 continue;
1036
1037 p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
1038 if (!p) {
1039 r = -ENOMEM;
1040 goto fail;
1041 }
1042
1043 r = set_consume(m->unit_path_cache, p);
1044 if (r < 0)
1045 goto fail;
1046 }
1047
1048 closedir(d);
1049 d = NULL;
1050 }
1051
1052 return;
1053
1054 fail:
1055 log_error("Failed to build unit path cache: %s", strerror(-r));
1056
1057 set_free_free(m->unit_path_cache);
1058 m->unit_path_cache = NULL;
1059 }
1060
1061
1062 static int manager_distribute_fds(Manager *m, FDSet *fds) {
1063 Unit *u;
1064 Iterator i;
1065 int r;
1066
1067 assert(m);
1068
1069 HASHMAP_FOREACH(u, m->units, i) {
1070
1071 if (fdset_size(fds) <= 0)
1072 break;
1073
1074 if (UNIT_VTABLE(u)->distribute_fds) {
1075 r = UNIT_VTABLE(u)->distribute_fds(u, fds);
1076 if (r < 0)
1077 return r;
1078 }
1079 }
1080
1081 return 0;
1082 }
1083
1084 int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
1085 int r, q;
1086
1087 assert(m);
1088
1089 dual_timestamp_get(&m->generators_start_timestamp);
1090 manager_run_generators(m);
1091 dual_timestamp_get(&m->generators_finish_timestamp);
1092
1093 r = lookup_paths_init(
1094 &m->lookup_paths, m->running_as, true,
1095 NULL,
1096 m->generator_unit_path,
1097 m->generator_unit_path_early,
1098 m->generator_unit_path_late);
1099 if (r < 0)
1100 return r;
1101
1102 manager_build_unit_path_cache(m);
1103
1104 /* If we will deserialize make sure that during enumeration
1105 * this is already known, so we increase the counter here
1106 * already */
1107 if (serialization)
1108 m->n_reloading ++;
1109
1110 /* First, enumerate what we can from all config files */
1111 dual_timestamp_get(&m->units_load_start_timestamp);
1112 r = manager_enumerate(m);
1113 dual_timestamp_get(&m->units_load_finish_timestamp);
1114
1115 /* Second, deserialize if there is something to deserialize */
1116 if (serialization)
1117 r = manager_deserialize(m, serialization, fds);
1118
1119 /* Any fds left? Find some unit which wants them. This is
1120 * useful to allow container managers to pass some file
1121 * descriptors to us pre-initialized. This enables
1122 * socket-based activation of entire containers. */
1123 if (fdset_size(fds) > 0) {
1124 q = manager_distribute_fds(m, fds);
1125 if (q < 0 && r == 0)
1126 r = q;
1127 }
1128
1129 /* We might have deserialized the notify fd, but if we didn't
1130 * then let's create the bus now */
1131 q = manager_setup_notify(m);
1132 if (q < 0 && r == 0)
1133 r = q;
1134
1135 /* We might have deserialized the kdbus control fd, but if we
1136 * didn't, then let's create the bus now. */
1137 manager_setup_kdbus(m);
1138 manager_connect_bus(m, !!serialization);
1139 bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed);
1140
1141 /* Third, fire things up! */
1142 q = manager_coldplug(m);
1143 if (q < 0 && r == 0)
1144 r = q;
1145
1146 if (serialization) {
1147 assert(m->n_reloading > 0);
1148 m->n_reloading --;
1149
1150 /* Let's wait for the UnitNew/JobNew messages being
1151 * sent, before we notify that the reload is
1152 * finished */
1153 m->send_reloading_done = true;
1154 }
1155
1156 return r;
1157 }
1158
1159 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1160 int r;
1161 Transaction *tr;
1162
1163 assert(m);
1164 assert(type < _JOB_TYPE_MAX);
1165 assert(unit);
1166 assert(mode < _JOB_MODE_MAX);
1167
1168 if (mode == JOB_ISOLATE && type != JOB_START)
1169 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start.");
1170
1171 if (mode == JOB_ISOLATE && !unit->allow_isolate)
1172 return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
1173
1174 log_debug_unit(unit->id,
1175 "Trying to enqueue job %s/%s/%s", unit->id,
1176 job_type_to_string(type), job_mode_to_string(mode));
1177
1178 job_type_collapse(&type, unit);
1179
1180 tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
1181 if (!tr)
1182 return -ENOMEM;
1183
1184 r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
1185 mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
1186 mode == JOB_IGNORE_DEPENDENCIES, e);
1187 if (r < 0)
1188 goto tr_abort;
1189
1190 if (mode == JOB_ISOLATE) {
1191 r = transaction_add_isolate_jobs(tr, m);
1192 if (r < 0)
1193 goto tr_abort;
1194 }
1195
1196 r = transaction_activate(tr, m, mode, e);
1197 if (r < 0)
1198 goto tr_abort;
1199
1200 log_debug_unit(unit->id,
1201 "Enqueued job %s/%s as %u", unit->id,
1202 job_type_to_string(type), (unsigned) tr->anchor_job->id);
1203
1204 if (_ret)
1205 *_ret = tr->anchor_job;
1206
1207 transaction_free(tr);
1208 return 0;
1209
1210 tr_abort:
1211 transaction_abort(tr);
1212 transaction_free(tr);
1213 return r;
1214 }
1215
1216 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) {
1217 Unit *unit;
1218 int r;
1219
1220 assert(m);
1221 assert(type < _JOB_TYPE_MAX);
1222 assert(name);
1223 assert(mode < _JOB_MODE_MAX);
1224
1225 r = manager_load_unit(m, name, NULL, NULL, &unit);
1226 if (r < 0)
1227 return r;
1228
1229 return manager_add_job(m, type, unit, mode, override, e, _ret);
1230 }
1231
1232 Job *manager_get_job(Manager *m, uint32_t id) {
1233 assert(m);
1234
1235 return hashmap_get(m->jobs, UINT32_TO_PTR(id));
1236 }
1237
1238 Unit *manager_get_unit(Manager *m, const char *name) {
1239 assert(m);
1240 assert(name);
1241
1242 return hashmap_get(m->units, name);
1243 }
1244
1245 unsigned manager_dispatch_load_queue(Manager *m) {
1246 Unit *u;
1247 unsigned n = 0;
1248
1249 assert(m);
1250
1251 /* Make sure we are not run recursively */
1252 if (m->dispatching_load_queue)
1253 return 0;
1254
1255 m->dispatching_load_queue = true;
1256
1257 /* Dispatches the load queue. Takes a unit from the queue and
1258 * tries to load its data until the queue is empty */
1259
1260 while ((u = m->load_queue)) {
1261 assert(u->in_load_queue);
1262
1263 unit_load(u);
1264 n++;
1265 }
1266
1267 m->dispatching_load_queue = false;
1268 return n;
1269 }
1270
1271 int manager_load_unit_prepare(
1272 Manager *m,
1273 const char *name,
1274 const char *path,
1275 sd_bus_error *e,
1276 Unit **_ret) {
1277
1278 Unit *ret;
1279 UnitType t;
1280 int r;
1281
1282 assert(m);
1283 assert(name || path);
1284
1285 /* This will prepare the unit for loading, but not actually
1286 * load anything from disk. */
1287
1288 if (path && !is_path(path))
1289 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
1290
1291 if (!name)
1292 name = basename(path);
1293
1294 t = unit_name_to_type(name);
1295
1296 if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, TEMPLATE_INVALID))
1297 return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name);
1298
1299 ret = manager_get_unit(m, name);
1300 if (ret) {
1301 *_ret = ret;
1302 return 1;
1303 }
1304
1305 ret = unit_new(m, unit_vtable[t]->object_size);
1306 if (!ret)
1307 return -ENOMEM;
1308
1309 if (path) {
1310 ret->fragment_path = strdup(path);
1311 if (!ret->fragment_path) {
1312 unit_free(ret);
1313 return -ENOMEM;
1314 }
1315 }
1316
1317 r = unit_add_name(ret, name);
1318 if (r < 0) {
1319 unit_free(ret);
1320 return r;
1321 }
1322
1323 unit_add_to_load_queue(ret);
1324 unit_add_to_dbus_queue(ret);
1325 unit_add_to_gc_queue(ret);
1326
1327 if (_ret)
1328 *_ret = ret;
1329
1330 return 0;
1331 }
1332
1333 int manager_load_unit(
1334 Manager *m,
1335 const char *name,
1336 const char *path,
1337 sd_bus_error *e,
1338 Unit **_ret) {
1339
1340 int r;
1341
1342 assert(m);
1343
1344 /* This will load the service information files, but not actually
1345 * start any services or anything. */
1346
1347 r = manager_load_unit_prepare(m, name, path, e, _ret);
1348 if (r != 0)
1349 return r;
1350
1351 manager_dispatch_load_queue(m);
1352
1353 if (_ret)
1354 *_ret = unit_follow_merge(*_ret);
1355
1356 return 0;
1357 }
1358
1359 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
1360 Iterator i;
1361 Job *j;
1362
1363 assert(s);
1364 assert(f);
1365
1366 HASHMAP_FOREACH(j, s->jobs, i)
1367 job_dump(j, f, prefix);
1368 }
1369
1370 void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
1371 Iterator i;
1372 Unit *u;
1373 const char *t;
1374
1375 assert(s);
1376 assert(f);
1377
1378 HASHMAP_FOREACH_KEY(u, t, s->units, i)
1379 if (u->id == t)
1380 unit_dump(u, f, prefix);
1381 }
1382
1383 void manager_clear_jobs(Manager *m) {
1384 Job *j;
1385
1386 assert(m);
1387
1388 while ((j = hashmap_first(m->jobs)))
1389 /* No need to recurse. We're cancelling all jobs. */
1390 job_finish_and_invalidate(j, JOB_CANCELED, false);
1391 }
1392
1393 static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) {
1394 Manager *m = userdata;
1395 Job *j;
1396
1397 assert(source);
1398 assert(m);
1399
1400 while ((j = m->run_queue)) {
1401 assert(j->installed);
1402 assert(j->in_run_queue);
1403
1404 job_run_and_invalidate(j);
1405 }
1406
1407 if (m->n_running_jobs > 0)
1408 manager_watch_jobs_in_progress(m);
1409
1410 if (m->n_on_console > 0)
1411 manager_watch_idle_pipe(m);
1412
1413 return 1;
1414 }
1415
1416 static unsigned manager_dispatch_dbus_queue(Manager *m) {
1417 Job *j;
1418 Unit *u;
1419 unsigned n = 0;
1420
1421 assert(m);
1422
1423 if (m->dispatching_dbus_queue)
1424 return 0;
1425
1426 m->dispatching_dbus_queue = true;
1427
1428 while ((u = m->dbus_unit_queue)) {
1429 assert(u->in_dbus_queue);
1430
1431 bus_unit_send_change_signal(u);
1432 n++;
1433 }
1434
1435 while ((j = m->dbus_job_queue)) {
1436 assert(j->in_dbus_queue);
1437
1438 bus_job_send_change_signal(j);
1439 n++;
1440 }
1441
1442 m->dispatching_dbus_queue = false;
1443
1444 if (m->send_reloading_done) {
1445 m->send_reloading_done = false;
1446
1447 bus_manager_send_reloading(m, false);
1448 }
1449
1450 if (m->queued_message)
1451 bus_send_queued_message(m);
1452
1453 return n;
1454 }
1455
1456 static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n) {
1457 _cleanup_strv_free_ char **tags = NULL;
1458
1459 assert(m);
1460 assert(u);
1461 assert(buf);
1462 assert(n > 0);
1463
1464 tags = strv_split(buf, "\n\r");
1465 if (!tags) {
1466 log_oom();
1467 return;
1468 }
1469
1470 log_debug_unit(u->id, "Got notification message for unit %s", u->id);
1471
1472 if (UNIT_VTABLE(u)->notify_message)
1473 UNIT_VTABLE(u)->notify_message(u, pid, tags);
1474 }
1475
1476 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1477 Manager *m = userdata;
1478 ssize_t n;
1479
1480 assert(m);
1481 assert(m->notify_fd == fd);
1482
1483 if (revents != EPOLLIN) {
1484 log_warning("Got unexpected poll event for notify fd.");
1485 return 0;
1486 }
1487
1488 for (;;) {
1489 char buf[4096];
1490 struct iovec iovec = {
1491 .iov_base = buf,
1492 .iov_len = sizeof(buf)-1,
1493 };
1494 bool found = false;
1495
1496 union {
1497 struct cmsghdr cmsghdr;
1498 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
1499 } control = {};
1500
1501 struct msghdr msghdr = {
1502 .msg_iov = &iovec,
1503 .msg_iovlen = 1,
1504 .msg_control = &control,
1505 .msg_controllen = sizeof(control),
1506 };
1507 struct ucred *ucred;
1508 Unit *u1, *u2, *u3;
1509
1510 n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT);
1511 if (n <= 0) {
1512 if (n == 0)
1513 return -EIO;
1514
1515 if (errno == EAGAIN || errno == EINTR)
1516 break;
1517
1518 return -errno;
1519 }
1520
1521 if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
1522 control.cmsghdr.cmsg_level != SOL_SOCKET ||
1523 control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
1524 control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
1525 log_warning("Received notify message without credentials. Ignoring.");
1526 continue;
1527 }
1528
1529 ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
1530
1531 assert((size_t) n < sizeof(buf));
1532 buf[n] = 0;
1533
1534 /* Notify every unit that might be interested, but try
1535 * to avoid notifying the same one multiple times. */
1536 u1 = manager_get_unit_by_pid(m, ucred->pid);
1537 if (u1) {
1538 manager_invoke_notify_message(m, u1, ucred->pid, buf, n);
1539 found = true;
1540 }
1541
1542 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(ucred->pid));
1543 if (u2 && u2 != u1) {
1544 manager_invoke_notify_message(m, u2, ucred->pid, buf, n);
1545 found = true;
1546 }
1547
1548 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(ucred->pid));
1549 if (u3 && u3 != u2 && u3 != u1) {
1550 manager_invoke_notify_message(m, u3, ucred->pid, buf, n);
1551 found = true;
1552 }
1553
1554 if (!found)
1555 log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid);
1556 }
1557
1558 return 0;
1559 }
1560
1561 static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) {
1562 assert(m);
1563 assert(u);
1564 assert(si);
1565
1566 log_debug_unit(u->id, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
1567
1568 unit_unwatch_pid(u, si->si_pid);
1569 UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
1570 }
1571
1572 static int manager_dispatch_sigchld(Manager *m) {
1573 assert(m);
1574
1575 for (;;) {
1576 siginfo_t si = {};
1577
1578 /* First we call waitd() for a PID and do not reap the
1579 * zombie. That way we can still access /proc/$PID for
1580 * it while it is a zombie. */
1581 if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
1582
1583 if (errno == ECHILD)
1584 break;
1585
1586 if (errno == EINTR)
1587 continue;
1588
1589 return -errno;
1590 }
1591
1592 if (si.si_pid <= 0)
1593 break;
1594
1595 if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
1596 _cleanup_free_ char *name = NULL;
1597 Unit *u1, *u2, *u3;
1598
1599 get_process_comm(si.si_pid, &name);
1600
1601 log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)",
1602 si.si_pid, strna(name),
1603 sigchld_code_to_string(si.si_code),
1604 si.si_status,
1605 strna(si.si_code == CLD_EXITED
1606 ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
1607 : signal_to_string(si.si_status)));
1608
1609 /* And now figure out the unit this belongs
1610 * to, it might be multiple... */
1611 u1 = manager_get_unit_by_pid(m, si.si_pid);
1612 if (u1)
1613 invoke_sigchld_event(m, u1, &si);
1614 u2 = hashmap_get(m->watch_pids1, LONG_TO_PTR(si.si_pid));
1615 if (u2 && u2 != u1)
1616 invoke_sigchld_event(m, u2, &si);
1617 u3 = hashmap_get(m->watch_pids2, LONG_TO_PTR(si.si_pid));
1618 if (u3 && u3 != u2 && u3 != u1)
1619 invoke_sigchld_event(m, u3, &si);
1620 }
1621
1622 /* And now, we actually reap the zombie. */
1623 if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
1624 if (errno == EINTR)
1625 continue;
1626
1627 return -errno;
1628 }
1629 }
1630
1631 return 0;
1632 }
1633
1634 static int manager_start_target(Manager *m, const char *name, JobMode mode) {
1635 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1636 int r;
1637
1638 log_debug_unit(name, "Activating special unit %s", name);
1639
1640 r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
1641 if (r < 0)
1642 log_error_unit(name, "Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
1643
1644 return r;
1645 }
1646
1647 static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1648 Manager *m = userdata;
1649 ssize_t n;
1650 struct signalfd_siginfo sfsi;
1651 bool sigchld = false;
1652
1653 assert(m);
1654 assert(m->signal_fd == fd);
1655
1656 if (revents != EPOLLIN) {
1657 log_warning("Got unexpected events from signal file descriptor.");
1658 return 0;
1659 }
1660
1661 for (;;) {
1662 n = read(m->signal_fd, &sfsi, sizeof(sfsi));
1663 if (n != sizeof(sfsi)) {
1664
1665 if (n >= 0)
1666 return -EIO;
1667
1668 if (errno == EINTR || errno == EAGAIN)
1669 break;
1670
1671 return -errno;
1672 }
1673
1674 log_received_signal(sfsi.ssi_signo == SIGCHLD ||
1675 (sfsi.ssi_signo == SIGTERM && m->running_as == SYSTEMD_USER)
1676 ? LOG_DEBUG : LOG_INFO,
1677 &sfsi);
1678
1679 switch (sfsi.ssi_signo) {
1680
1681 case SIGCHLD:
1682 sigchld = true;
1683 break;
1684
1685 case SIGTERM:
1686 if (m->running_as == SYSTEMD_SYSTEM) {
1687 /* This is for compatibility with the
1688 * original sysvinit */
1689 m->exit_code = MANAGER_REEXECUTE;
1690 break;
1691 }
1692
1693 /* Fall through */
1694
1695 case SIGINT:
1696 if (m->running_as == SYSTEMD_SYSTEM) {
1697 manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
1698 break;
1699 }
1700
1701 /* Run the exit target if there is one, if not, just exit. */
1702 if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
1703 m->exit_code = MANAGER_EXIT;
1704 return 0;
1705 }
1706
1707 break;
1708
1709 case SIGWINCH:
1710 if (m->running_as == SYSTEMD_SYSTEM)
1711 manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
1712
1713 /* This is a nop on non-init */
1714 break;
1715
1716 case SIGPWR:
1717 if (m->running_as == SYSTEMD_SYSTEM)
1718 manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
1719
1720 /* This is a nop on non-init */
1721 break;
1722
1723 case SIGUSR1: {
1724 Unit *u;
1725
1726 u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
1727
1728 if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
1729 log_info("Trying to reconnect to bus...");
1730 bus_init(m, true);
1731 }
1732
1733 if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
1734 log_info("Loading D-Bus service...");
1735 manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
1736 }
1737
1738 break;
1739 }
1740
1741 case SIGUSR2: {
1742 _cleanup_free_ char *dump = NULL;
1743 _cleanup_fclose_ FILE *f = NULL;
1744 size_t size;
1745
1746 f = open_memstream(&dump, &size);
1747 if (!f) {
1748 log_warning("Failed to allocate memory stream.");
1749 break;
1750 }
1751
1752 manager_dump_units(m, f, "\t");
1753 manager_dump_jobs(m, f, "\t");
1754
1755 if (ferror(f)) {
1756 log_warning("Failed to write status stream");
1757 break;
1758 }
1759
1760 if (fflush(f)) {
1761 log_warning("Failed to flush status stream");
1762 break;
1763 }
1764
1765 log_dump(LOG_INFO, dump);
1766 break;
1767 }
1768
1769 case SIGHUP:
1770 m->exit_code = MANAGER_RELOAD;
1771 break;
1772
1773 default: {
1774
1775 /* Starting SIGRTMIN+0 */
1776 static const char * const target_table[] = {
1777 [0] = SPECIAL_DEFAULT_TARGET,
1778 [1] = SPECIAL_RESCUE_TARGET,
1779 [2] = SPECIAL_EMERGENCY_TARGET,
1780 [3] = SPECIAL_HALT_TARGET,
1781 [4] = SPECIAL_POWEROFF_TARGET,
1782 [5] = SPECIAL_REBOOT_TARGET,
1783 [6] = SPECIAL_KEXEC_TARGET
1784 };
1785
1786 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
1787 static const ManagerExitCode code_table[] = {
1788 [0] = MANAGER_HALT,
1789 [1] = MANAGER_POWEROFF,
1790 [2] = MANAGER_REBOOT,
1791 [3] = MANAGER_KEXEC
1792 };
1793
1794 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
1795 (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
1796 int idx = (int) sfsi.ssi_signo - SIGRTMIN;
1797 manager_start_target(m, target_table[idx],
1798 (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
1799 break;
1800 }
1801
1802 if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
1803 (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
1804 m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
1805 break;
1806 }
1807
1808 switch (sfsi.ssi_signo - SIGRTMIN) {
1809
1810 case 20:
1811 log_debug("Enabling showing of status.");
1812 manager_set_show_status(m, SHOW_STATUS_YES);
1813 break;
1814
1815 case 21:
1816 log_debug("Disabling showing of status.");
1817 manager_set_show_status(m, SHOW_STATUS_NO);
1818 break;
1819
1820 case 22:
1821 log_set_max_level(LOG_DEBUG);
1822 log_notice("Setting log level to debug.");
1823 break;
1824
1825 case 23:
1826 log_set_max_level(LOG_INFO);
1827 log_notice("Setting log level to info.");
1828 break;
1829
1830 case 24:
1831 if (m->running_as == SYSTEMD_USER) {
1832 m->exit_code = MANAGER_EXIT;
1833 return 0;
1834 }
1835
1836 /* This is a nop on init */
1837 break;
1838
1839 case 26:
1840 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
1841 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1842 log_notice("Setting log target to journal-or-kmsg.");
1843 break;
1844
1845 case 27:
1846 log_set_target(LOG_TARGET_CONSOLE);
1847 log_notice("Setting log target to console.");
1848 break;
1849
1850 case 28:
1851 log_set_target(LOG_TARGET_KMSG);
1852 log_notice("Setting log target to kmsg.");
1853 break;
1854
1855 default:
1856 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
1857 }
1858 }
1859 }
1860 }
1861
1862 if (sigchld)
1863 manager_dispatch_sigchld(m);
1864
1865 return 0;
1866 }
1867
1868 static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1869 Manager *m = userdata;
1870 Iterator i;
1871 Unit *u;
1872
1873 assert(m);
1874 assert(m->time_change_fd == fd);
1875
1876 log_struct(LOG_INFO,
1877 MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
1878 "MESSAGE=Time has been changed",
1879 NULL);
1880
1881 /* Restart the watch */
1882 m->time_change_event_source = sd_event_source_unref(m->time_change_event_source);
1883 m->time_change_fd = safe_close(m->time_change_fd);
1884
1885 manager_setup_time_change(m);
1886
1887 HASHMAP_FOREACH(u, m->units, i)
1888 if (UNIT_VTABLE(u)->time_change)
1889 UNIT_VTABLE(u)->time_change(u);
1890
1891 return 0;
1892 }
1893
1894 static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
1895 Manager *m = userdata;
1896
1897 assert(m);
1898 assert(m->idle_pipe[2] == fd);
1899
1900 m->no_console_output = m->n_on_console > 0;
1901
1902 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
1903 manager_close_idle_pipe(m);
1904
1905 return 0;
1906 }
1907
1908 static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) {
1909 Manager *m = userdata;
1910 int r;
1911 uint64_t next;
1912
1913 assert(m);
1914 assert(source);
1915
1916 manager_print_jobs_in_progress(m);
1917
1918 next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC;
1919 r = sd_event_source_set_time(source, next);
1920 if (r < 0)
1921 return r;
1922
1923 return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
1924 }
1925
1926 int manager_loop(Manager *m) {
1927 int r;
1928
1929 RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
1930
1931 assert(m);
1932 m->exit_code = MANAGER_OK;
1933
1934 /* Release the path cache */
1935 set_free_free(m->unit_path_cache);
1936 m->unit_path_cache = NULL;
1937
1938 manager_check_finished(m);
1939
1940 /* There might still be some zombies hanging around from
1941 * before we were exec()'ed. Let's reap them. */
1942 r = manager_dispatch_sigchld(m);
1943 if (r < 0)
1944 return r;
1945
1946 while (m->exit_code == MANAGER_OK) {
1947 usec_t wait_usec;
1948
1949 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
1950 watchdog_ping();
1951
1952 if (!ratelimit_test(&rl)) {
1953 /* Yay, something is going seriously wrong, pause a little */
1954 log_warning("Looping too fast. Throttling execution a little.");
1955 sleep(1);
1956 continue;
1957 }
1958
1959 if (manager_dispatch_load_queue(m) > 0)
1960 continue;
1961
1962 if (manager_dispatch_gc_queue(m) > 0)
1963 continue;
1964
1965 if (manager_dispatch_cleanup_queue(m) > 0)
1966 continue;
1967
1968 if (manager_dispatch_cgroup_queue(m) > 0)
1969 continue;
1970
1971 if (manager_dispatch_dbus_queue(m) > 0)
1972 continue;
1973
1974 /* Sleep for half the watchdog time */
1975 if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
1976 wait_usec = m->runtime_watchdog / 2;
1977 if (wait_usec <= 0)
1978 wait_usec = 1;
1979 } else
1980 wait_usec = USEC_INFINITY;
1981
1982 r = sd_event_run(m->event, wait_usec);
1983 if (r < 0) {
1984 log_error("Failed to run event loop: %s", strerror(-r));
1985 return r;
1986 }
1987 }
1988
1989 return m->exit_code;
1990 }
1991
1992 int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) {
1993 _cleanup_free_ char *n = NULL;
1994 Unit *u;
1995 int r;
1996
1997 assert(m);
1998 assert(s);
1999 assert(_u);
2000
2001 r = unit_name_from_dbus_path(s, &n);
2002 if (r < 0)
2003 return r;
2004
2005 r = manager_load_unit(m, n, NULL, e, &u);
2006 if (r < 0)
2007 return r;
2008
2009 *_u = u;
2010
2011 return 0;
2012 }
2013
2014 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
2015 const char *p;
2016 unsigned id;
2017 Job *j;
2018 int r;
2019
2020 assert(m);
2021 assert(s);
2022 assert(_j);
2023
2024 p = startswith(s, "/org/freedesktop/systemd1/job/");
2025 if (!p)
2026 return -EINVAL;
2027
2028 r = safe_atou(p, &id);
2029 if (r < 0)
2030 return r;
2031
2032 j = manager_get_job(m, id);
2033 if (!j)
2034 return -ENOENT;
2035
2036 *_j = j;
2037
2038 return 0;
2039 }
2040
2041 void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
2042
2043 #ifdef HAVE_AUDIT
2044 _cleanup_free_ char *p = NULL;
2045 const char *msg;
2046 int audit_fd;
2047
2048 audit_fd = get_audit_fd();
2049 if (audit_fd < 0)
2050 return;
2051
2052 /* Don't generate audit events if the service was already
2053 * started and we're just deserializing */
2054 if (m->n_reloading > 0)
2055 return;
2056
2057 if (m->running_as != SYSTEMD_SYSTEM)
2058 return;
2059
2060 if (u->type != UNIT_SERVICE)
2061 return;
2062
2063 p = unit_name_to_prefix_and_instance(u->id);
2064 if (!p) {
2065 log_oom();
2066 return;
2067 }
2068
2069 msg = strappenda("unit=", p);
2070
2071 if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) {
2072 if (errno == EPERM)
2073 /* We aren't allowed to send audit messages?
2074 * Then let's not retry again. */
2075 close_audit_fd();
2076 else
2077 log_warning("Failed to send audit message: %m");
2078 }
2079 #endif
2080
2081 }
2082
2083 void manager_send_unit_plymouth(Manager *m, Unit *u) {
2084 union sockaddr_union sa = PLYMOUTH_SOCKET;
2085
2086 int n = 0;
2087 _cleanup_free_ char *message = NULL;
2088 _cleanup_close_ int fd = -1;
2089
2090 /* Don't generate plymouth events if the service was already
2091 * started and we're just deserializing */
2092 if (m->n_reloading > 0)
2093 return;
2094
2095 if (m->running_as != SYSTEMD_SYSTEM)
2096 return;
2097
2098 if (detect_container(NULL) > 0)
2099 return;
2100
2101 if (u->type != UNIT_SERVICE &&
2102 u->type != UNIT_MOUNT &&
2103 u->type != UNIT_SWAP)
2104 return;
2105
2106 /* We set SOCK_NONBLOCK here so that we rather drop the
2107 * message then wait for plymouth */
2108 fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
2109 if (fd < 0) {
2110 log_error("socket() failed: %m");
2111 return;
2112 }
2113
2114 if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
2115
2116 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2117 log_error("connect() failed: %m");
2118 return;
2119 }
2120
2121 if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
2122 log_oom();
2123 return;
2124 }
2125
2126 errno = 0;
2127 if (write(fd, message, n + 1) != n + 1)
2128 if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED))
2129 log_error("Failed to write Plymouth message: %m");
2130 }
2131
2132 void manager_dispatch_bus_name_owner_changed(
2133 Manager *m,
2134 const char *name,
2135 const char* old_owner,
2136 const char *new_owner) {
2137
2138 Unit *u;
2139
2140 assert(m);
2141 assert(name);
2142
2143 u = hashmap_get(m->watch_bus, name);
2144 if (!u)
2145 return;
2146
2147 UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
2148 }
2149
2150 int manager_open_serialization(Manager *m, FILE **_f) {
2151 const char *path;
2152 int fd = -1;
2153 FILE *f;
2154
2155 assert(_f);
2156
2157 path = m->running_as == SYSTEMD_SYSTEM ? "/run/systemd" : "/tmp";
2158 fd = open_tmpfile(path, O_RDWR|O_CLOEXEC);
2159 if (fd < 0)
2160 return -errno;
2161
2162 log_debug("Serializing state to %s", path);
2163
2164 f = fdopen(fd, "w+");
2165 if (!f) {
2166 safe_close(fd);
2167 return -errno;
2168 }
2169
2170 *_f = f;
2171
2172 return 0;
2173 }
2174
2175 int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) {
2176 Iterator i;
2177 Unit *u;
2178 const char *t;
2179 char **e;
2180 int r;
2181
2182 assert(m);
2183 assert(f);
2184 assert(fds);
2185
2186 m->n_reloading ++;
2187
2188 fprintf(f, "current-job-id=%i\n", m->current_job_id);
2189 fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
2190 fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
2191 fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
2192
2193 dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
2194 dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
2195 dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
2196 dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
2197
2198 if (!in_initrd()) {
2199 dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
2200 dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
2201 dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp);
2202 dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp);
2203 dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp);
2204 dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp);
2205 dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp);
2206 dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp);
2207 }
2208
2209 if (!switching_root) {
2210 STRV_FOREACH(e, m->environment) {
2211 _cleanup_free_ char *ce;
2212
2213 ce = cescape(*e);
2214 if (!ce)
2215 return -ENOMEM;
2216
2217 fprintf(f, "env=%s\n", *e);
2218 }
2219 }
2220
2221 if (m->notify_fd >= 0) {
2222 int copy;
2223
2224 copy = fdset_put_dup(fds, m->notify_fd);
2225 if (copy < 0)
2226 return copy;
2227
2228 fprintf(f, "notify-fd=%i\n", copy);
2229 fprintf(f, "notify-socket=%s\n", m->notify_socket);
2230 }
2231
2232 if (m->kdbus_fd >= 0) {
2233 int copy;
2234
2235 copy = fdset_put_dup(fds, m->kdbus_fd);
2236 if (copy < 0)
2237 return copy;
2238
2239 fprintf(f, "kdbus-fd=%i\n", copy);
2240 }
2241
2242 bus_track_serialize(m->subscribed, f);
2243
2244 fputc('\n', f);
2245
2246 HASHMAP_FOREACH_KEY(u, t, m->units, i) {
2247 if (u->id != t)
2248 continue;
2249
2250 /* Start marker */
2251 fputs(u->id, f);
2252 fputc('\n', f);
2253
2254 r = unit_serialize(u, f, fds, !switching_root);
2255 if (r < 0) {
2256 m->n_reloading --;
2257 return r;
2258 }
2259 }
2260
2261 assert(m->n_reloading > 0);
2262 m->n_reloading --;
2263
2264 if (ferror(f))
2265 return -EIO;
2266
2267 r = bus_fdset_add_all(m, fds);
2268 if (r < 0)
2269 return r;
2270
2271 return 0;
2272 }
2273
2274 int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
2275 int r = 0;
2276
2277 assert(m);
2278 assert(f);
2279
2280 log_debug("Deserializing state...");
2281
2282 m->n_reloading ++;
2283
2284 for (;;) {
2285 char line[LINE_MAX], *l;
2286
2287 if (!fgets(line, sizeof(line), f)) {
2288 if (feof(f))
2289 r = 0;
2290 else
2291 r = -errno;
2292
2293 goto finish;
2294 }
2295
2296 char_array_0(line);
2297 l = strstrip(line);
2298
2299 if (l[0] == 0)
2300 break;
2301
2302 if (startswith(l, "current-job-id=")) {
2303 uint32_t id;
2304
2305 if (safe_atou32(l+15, &id) < 0)
2306 log_warning("Failed to parse current job id value %s", l+15);
2307 else
2308 m->current_job_id = MAX(m->current_job_id, id);
2309
2310 } else if (startswith(l, "n-installed-jobs=")) {
2311 uint32_t n;
2312
2313 if (safe_atou32(l+17, &n) < 0)
2314 log_warning("Failed to parse installed jobs counter %s", l+17);
2315 else
2316 m->n_installed_jobs += n;
2317
2318 } else if (startswith(l, "n-failed-jobs=")) {
2319 uint32_t n;
2320
2321 if (safe_atou32(l+14, &n) < 0)
2322 log_warning("Failed to parse failed jobs counter %s", l+14);
2323 else
2324 m->n_failed_jobs += n;
2325
2326 } else if (startswith(l, "taint-usr=")) {
2327 int b;
2328
2329 b = parse_boolean(l+10);
2330 if (b < 0)
2331 log_warning("Failed to parse taint /usr flag %s", l+10);
2332 else
2333 m->taint_usr = m->taint_usr || b;
2334
2335 } else if (startswith(l, "firmware-timestamp="))
2336 dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
2337 else if (startswith(l, "loader-timestamp="))
2338 dual_timestamp_deserialize(l+17, &m->loader_timestamp);
2339 else if (startswith(l, "kernel-timestamp="))
2340 dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
2341 else if (startswith(l, "initrd-timestamp="))
2342 dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
2343 else if (startswith(l, "userspace-timestamp="))
2344 dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
2345 else if (startswith(l, "finish-timestamp="))
2346 dual_timestamp_deserialize(l+17, &m->finish_timestamp);
2347 else if (startswith(l, "security-start-timestamp="))
2348 dual_timestamp_deserialize(l+25, &m->security_start_timestamp);
2349 else if (startswith(l, "security-finish-timestamp="))
2350 dual_timestamp_deserialize(l+26, &m->security_finish_timestamp);
2351 else if (startswith(l, "generators-start-timestamp="))
2352 dual_timestamp_deserialize(l+27, &m->generators_start_timestamp);
2353 else if (startswith(l, "generators-finish-timestamp="))
2354 dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp);
2355 else if (startswith(l, "units-load-start-timestamp="))
2356 dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp);
2357 else if (startswith(l, "units-load-finish-timestamp="))
2358 dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp);
2359 else if (startswith(l, "env=")) {
2360 _cleanup_free_ char *uce = NULL;
2361 char **e;
2362
2363 uce = cunescape(l+4);
2364 if (!uce) {
2365 r = -ENOMEM;
2366 goto finish;
2367 }
2368
2369 e = strv_env_set(m->environment, uce);
2370 if (!e) {
2371 r = -ENOMEM;
2372 goto finish;
2373 }
2374
2375 strv_free(m->environment);
2376 m->environment = e;
2377
2378 } else if (startswith(l, "notify-fd=")) {
2379 int fd;
2380
2381 if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2382 log_warning("Failed to parse notify fd: %s", l + 10);
2383 else {
2384 m->notify_event_source = sd_event_source_unref(m->notify_event_source);
2385 safe_close(m->notify_fd);
2386 m->notify_fd = fdset_remove(fds, fd);
2387 }
2388
2389 } else if (startswith(l, "notify-socket=")) {
2390 char *n;
2391
2392 n = strdup(l+14);
2393 if (!n) {
2394 r = -ENOMEM;
2395 goto finish;
2396 }
2397
2398 free(m->notify_socket);
2399 m->notify_socket = n;
2400
2401 } else if (startswith(l, "kdbus-fd=")) {
2402 int fd;
2403
2404 if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2405 log_warning("Failed to parse kdbus fd: %s", l + 9);
2406 else {
2407 safe_close(m->kdbus_fd);
2408 m->kdbus_fd = fdset_remove(fds, fd);
2409 }
2410
2411 } else if (bus_track_deserialize_item(&m->deserialized_subscribed, l) == 0)
2412 log_warning("Unknown serialization item '%s'", l);
2413 }
2414
2415 for (;;) {
2416 Unit *u;
2417 char name[UNIT_NAME_MAX+2];
2418
2419 /* Start marker */
2420 if (!fgets(name, sizeof(name), f)) {
2421 if (feof(f))
2422 r = 0;
2423 else
2424 r = -errno;
2425
2426 goto finish;
2427 }
2428
2429 char_array_0(name);
2430
2431 r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
2432 if (r < 0)
2433 goto finish;
2434
2435 r = unit_deserialize(u, f, fds);
2436 if (r < 0)
2437 goto finish;
2438 }
2439
2440 finish:
2441 if (ferror(f))
2442 r = -EIO;
2443
2444 assert(m->n_reloading > 0);
2445 m->n_reloading --;
2446
2447 return r;
2448 }
2449
2450 int manager_reload(Manager *m) {
2451 int r, q;
2452 _cleanup_fclose_ FILE *f = NULL;
2453 _cleanup_fdset_free_ FDSet *fds = NULL;
2454
2455 assert(m);
2456
2457 r = manager_open_serialization(m, &f);
2458 if (r < 0)
2459 return r;
2460
2461 m->n_reloading ++;
2462 bus_manager_send_reloading(m, true);
2463
2464 fds = fdset_new();
2465 if (!fds) {
2466 m->n_reloading --;
2467 return -ENOMEM;
2468 }
2469
2470 r = manager_serialize(m, f, fds, false);
2471 if (r < 0) {
2472 m->n_reloading --;
2473 return r;
2474 }
2475
2476 if (fseeko(f, 0, SEEK_SET) < 0) {
2477 m->n_reloading --;
2478 return -errno;
2479 }
2480
2481 /* From here on there is no way back. */
2482 manager_clear_jobs_and_units(m);
2483 manager_undo_generators(m);
2484 lookup_paths_free(&m->lookup_paths);
2485
2486 /* Find new unit paths */
2487 manager_run_generators(m);
2488
2489 q = lookup_paths_init(
2490 &m->lookup_paths, m->running_as, true,
2491 NULL,
2492 m->generator_unit_path,
2493 m->generator_unit_path_early,
2494 m->generator_unit_path_late);
2495 if (q < 0)
2496 r = q;
2497
2498 manager_build_unit_path_cache(m);
2499
2500 /* First, enumerate what we can from all config files */
2501 q = manager_enumerate(m);
2502 if (q < 0)
2503 r = q;
2504
2505 /* Second, deserialize our stored data */
2506 q = manager_deserialize(m, f, fds);
2507 if (q < 0)
2508 r = q;
2509
2510 fclose(f);
2511 f = NULL;
2512
2513 /* Re-register notify_fd as event source */
2514 q = manager_setup_notify(m);
2515 if (q < 0)
2516 r = q;
2517
2518 /* Third, fire things up! */
2519 q = manager_coldplug(m);
2520 if (q < 0)
2521 r = q;
2522
2523 assert(m->n_reloading > 0);
2524 m->n_reloading--;
2525
2526 m->send_reloading_done = true;
2527
2528 return r;
2529 }
2530
2531 bool manager_is_reloading_or_reexecuting(Manager *m) {
2532 assert(m);
2533
2534 return m->n_reloading != 0;
2535 }
2536
2537 void manager_reset_failed(Manager *m) {
2538 Unit *u;
2539 Iterator i;
2540
2541 assert(m);
2542
2543 HASHMAP_FOREACH(u, m->units, i)
2544 unit_reset_failed(u);
2545 }
2546
2547 bool manager_unit_inactive_or_pending(Manager *m, const char *name) {
2548 Unit *u;
2549
2550 assert(m);
2551 assert(name);
2552
2553 /* Returns true if the unit is inactive or going down */
2554 u = manager_get_unit(m, name);
2555 if (!u)
2556 return true;
2557
2558 return unit_inactive_or_pending(u);
2559 }
2560
2561 static void manager_notify_finished(Manager *m) {
2562 char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
2563 usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
2564
2565 if (m->test_run)
2566 return;
2567
2568 if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
2569
2570 /* Note that m->kernel_usec.monotonic is always at 0,
2571 * and m->firmware_usec.monotonic and
2572 * m->loader_usec.monotonic should be considered
2573 * negative values. */
2574
2575 firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
2576 loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
2577 userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2578 total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
2579
2580 if (dual_timestamp_is_set(&m->initrd_timestamp)) {
2581
2582 kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
2583 initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
2584
2585 log_struct(LOG_INFO,
2586 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2587 "KERNEL_USEC="USEC_FMT, kernel_usec,
2588 "INITRD_USEC="USEC_FMT, initrd_usec,
2589 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2590 "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
2591 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2592 format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC),
2593 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2594 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2595 NULL);
2596 } else {
2597 kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
2598 initrd_usec = 0;
2599
2600 log_struct(LOG_INFO,
2601 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2602 "KERNEL_USEC="USEC_FMT, kernel_usec,
2603 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2604 "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
2605 format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC),
2606 format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC),
2607 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2608 NULL);
2609 }
2610 } else {
2611 firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
2612 total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
2613
2614 log_struct(LOG_INFO,
2615 MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
2616 "USERSPACE_USEC="USEC_FMT, userspace_usec,
2617 "MESSAGE=Startup finished in %s.",
2618 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC),
2619 NULL);
2620 }
2621
2622 bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
2623
2624 sd_notifyf(false,
2625 "READY=1\n"
2626 "STATUS=Startup finished in %s.",
2627 format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC));
2628 }
2629
2630 void manager_check_finished(Manager *m) {
2631 Unit *u = NULL;
2632 Iterator i;
2633
2634 assert(m);
2635
2636 if (m->n_running_jobs == 0)
2637 m->jobs_in_progress_event_source = sd_event_source_unref(m->jobs_in_progress_event_source);
2638
2639 if (hashmap_size(m->jobs) > 0) {
2640
2641 if (m->jobs_in_progress_event_source)
2642 sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC);
2643
2644 return;
2645 }
2646
2647 manager_flip_auto_status(m, false);
2648
2649 /* Notify Type=idle units that we are done now */
2650 m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source);
2651 manager_close_idle_pipe(m);
2652
2653 /* Turn off confirm spawn now */
2654 m->confirm_spawn = false;
2655
2656 /* No need to update ask password status when we're going non-interactive */
2657 manager_close_ask_password(m);
2658
2659 /* This is no longer the first boot */
2660 manager_set_first_boot(m, false);
2661
2662 if (dual_timestamp_is_set(&m->finish_timestamp))
2663 return;
2664
2665 dual_timestamp_get(&m->finish_timestamp);
2666
2667 manager_notify_finished(m);
2668
2669 SET_FOREACH(u, m->startup_units, i)
2670 if (u->cgroup_path)
2671 cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
2672 }
2673
2674 static int create_generator_dir(Manager *m, char **generator, const char *name) {
2675 char *p;
2676 int r;
2677
2678 assert(m);
2679 assert(generator);
2680 assert(name);
2681
2682 if (*generator)
2683 return 0;
2684
2685 if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
2686 /* systemd --system, not running --test */
2687
2688 p = strappend("/run/systemd/", name);
2689 if (!p)
2690 return log_oom();
2691
2692 r = mkdir_p_label(p, 0755);
2693 if (r < 0) {
2694 log_error("Failed to create generator directory %s: %s",
2695 p, strerror(-r));
2696 free(p);
2697 return r;
2698 }
2699 } else if (m->running_as == SYSTEMD_USER) {
2700 const char *s = NULL;
2701
2702 s = getenv("XDG_RUNTIME_DIR");
2703 if (!s)
2704 return -EINVAL;
2705 p = strjoin(s, "/systemd/", name, NULL);
2706 if (!p)
2707 return log_oom();
2708
2709 r = mkdir_p_label(p, 0755);
2710 if (r < 0) {
2711 log_error("Failed to create generator directory %s: %s",
2712 p, strerror(-r));
2713 free(p);
2714 return r;
2715 }
2716 } else {
2717 /* systemd --system --test */
2718
2719 p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
2720 if (!p)
2721 return log_oom();
2722
2723 if (!mkdtemp(p)) {
2724 log_error("Failed to create generator directory %s: %m",
2725 p);
2726 free(p);
2727 return -errno;
2728 }
2729 }
2730
2731 *generator = p;
2732 return 0;
2733 }
2734
2735 static void trim_generator_dir(Manager *m, char **generator) {
2736 assert(m);
2737 assert(generator);
2738
2739 if (!*generator)
2740 return;
2741
2742 if (rmdir(*generator) >= 0) {
2743 free(*generator);
2744 *generator = NULL;
2745 }
2746
2747 return;
2748 }
2749
2750 void manager_run_generators(Manager *m) {
2751 _cleanup_closedir_ DIR *d = NULL;
2752 const char *generator_path;
2753 const char *argv[5];
2754 int r;
2755
2756 assert(m);
2757
2758 if (m->test_run)
2759 return;
2760
2761 generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
2762 d = opendir(generator_path);
2763 if (!d) {
2764 if (errno == ENOENT)
2765 return;
2766
2767 log_error("Failed to enumerate generator directory %s: %m",
2768 generator_path);
2769 return;
2770 }
2771
2772 r = create_generator_dir(m, &m->generator_unit_path, "generator");
2773 if (r < 0)
2774 goto finish;
2775
2776 r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
2777 if (r < 0)
2778 goto finish;
2779
2780 r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
2781 if (r < 0)
2782 goto finish;
2783
2784 argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
2785 argv[1] = m->generator_unit_path;
2786 argv[2] = m->generator_unit_path_early;
2787 argv[3] = m->generator_unit_path_late;
2788 argv[4] = NULL;
2789
2790 RUN_WITH_UMASK(0022)
2791 execute_directory(generator_path, d, DEFAULT_TIMEOUT_USEC, (char**) argv);
2792
2793 finish:
2794 trim_generator_dir(m, &m->generator_unit_path);
2795 trim_generator_dir(m, &m->generator_unit_path_early);
2796 trim_generator_dir(m, &m->generator_unit_path_late);
2797 }
2798
2799 static void remove_generator_dir(Manager *m, char **generator) {
2800 assert(m);
2801 assert(generator);
2802
2803 if (!*generator)
2804 return;
2805
2806 strv_remove(m->lookup_paths.unit_path, *generator);
2807 rm_rf(*generator, false, true, false);
2808
2809 free(*generator);
2810 *generator = NULL;
2811 }
2812
2813 void manager_undo_generators(Manager *m) {
2814 assert(m);
2815
2816 remove_generator_dir(m, &m->generator_unit_path);
2817 remove_generator_dir(m, &m->generator_unit_path_early);
2818 remove_generator_dir(m, &m->generator_unit_path_late);
2819 }
2820
2821 int manager_environment_add(Manager *m, char **minus, char **plus) {
2822 char **a = NULL, **b = NULL, **l;
2823 assert(m);
2824
2825 l = m->environment;
2826
2827 if (!strv_isempty(minus)) {
2828 a = strv_env_delete(l, 1, minus);
2829 if (!a)
2830 return -ENOMEM;
2831
2832 l = a;
2833 }
2834
2835 if (!strv_isempty(plus)) {
2836 b = strv_env_merge(2, l, plus);
2837 if (!b) {
2838 strv_free(a);
2839 return -ENOMEM;
2840 }
2841
2842 l = b;
2843 }
2844
2845 if (m->environment != l)
2846 strv_free(m->environment);
2847 if (a != l)
2848 strv_free(a);
2849 if (b != l)
2850 strv_free(b);
2851
2852 m->environment = l;
2853 manager_clean_environment(m);
2854 strv_sort(m->environment);
2855
2856 return 0;
2857 }
2858
2859 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
2860 int i;
2861
2862 assert(m);
2863
2864 for (i = 0; i < _RLIMIT_MAX; i++) {
2865 if (!default_rlimit[i])
2866 continue;
2867
2868 m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
2869 if (!m->rlimit[i])
2870 return -ENOMEM;
2871 }
2872
2873 return 0;
2874 }
2875
2876 void manager_recheck_journal(Manager *m) {
2877 Unit *u;
2878
2879 assert(m);
2880
2881 if (m->running_as != SYSTEMD_SYSTEM)
2882 return;
2883
2884 u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
2885 if (u && SOCKET(u)->state != SOCKET_RUNNING) {
2886 log_close_journal();
2887 return;
2888 }
2889
2890 u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
2891 if (u && SERVICE(u)->state != SERVICE_RUNNING) {
2892 log_close_journal();
2893 return;
2894 }
2895
2896 /* Hmm, OK, so the socket is fully up and the service is up
2897 * too, then let's make use of the thing. */
2898 log_open();
2899 }
2900
2901 void manager_set_show_status(Manager *m, ShowStatus mode) {
2902 assert(m);
2903 assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY));
2904
2905 if (m->running_as != SYSTEMD_SYSTEM)
2906 return;
2907
2908 m->show_status = mode;
2909
2910 if (mode > 0)
2911 touch("/run/systemd/show-status");
2912 else
2913 unlink("/run/systemd/show-status");
2914 }
2915
2916 static bool manager_get_show_status(Manager *m, StatusType type) {
2917 assert(m);
2918
2919 if (m->running_as != SYSTEMD_SYSTEM)
2920 return false;
2921
2922 if (m->no_console_output)
2923 return false;
2924
2925 if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
2926 return false;
2927
2928 /* If we cannot find out the status properly, just proceed. */
2929 if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0)
2930 return false;
2931
2932 if (m->show_status > 0)
2933 return true;
2934
2935 /* If Plymouth is running make sure we show the status, so
2936 * that there's something nice to see when people press Esc */
2937 return plymouth_running();
2938 }
2939
2940 void manager_set_first_boot(Manager *m, bool b) {
2941 assert(m);
2942
2943 if (m->running_as != SYSTEMD_SYSTEM)
2944 return;
2945
2946 m->first_boot = b;
2947
2948 if (m->first_boot)
2949 touch("/run/systemd/first-boot");
2950 else
2951 unlink("/run/systemd/first-boot");
2952 }
2953
2954 void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) {
2955 va_list ap;
2956
2957 if (!manager_get_show_status(m, type))
2958 return;
2959
2960 /* XXX We should totally drop the check for ephemeral here
2961 * and thus effectively make 'Type=idle' pointless. */
2962 if (type == STATUS_TYPE_EPHEMERAL && m->n_on_console > 0)
2963 return;
2964
2965 va_start(ap, format);
2966 status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap);
2967 va_end(ap);
2968 }
2969
2970 int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found) {
2971 _cleanup_free_ char *p = NULL;
2972 Unit *found;
2973
2974 assert(m);
2975 assert(path);
2976 assert(suffix);
2977 assert(_found);
2978
2979 p = unit_name_from_path(path, suffix);
2980 if (!p)
2981 return -ENOMEM;
2982
2983 found = manager_get_unit(m, p);
2984 if (!found) {
2985 *_found = NULL;
2986 return 0;
2987 }
2988
2989 *_found = found;
2990 return 1;
2991 }
2992
2993 Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) {
2994 char p[strlen(path)+1];
2995
2996 assert(m);
2997 assert(path);
2998
2999 strcpy(p, path);
3000 path_kill_slashes(p);
3001
3002 return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p);
3003 }
3004
3005 const char *manager_get_runtime_prefix(Manager *m) {
3006 assert(m);
3007
3008 return m->running_as == SYSTEMD_SYSTEM ?
3009 "/run" :
3010 getenv("XDG_RUNTIME_DIR");
3011 }
3012
3013 ManagerState manager_state(Manager *m) {
3014 Unit *u;
3015
3016 assert(m);
3017
3018 /* Did we ever finish booting? If not then we are still starting up */
3019 if (!dual_timestamp_is_set(&m->finish_timestamp)) {
3020
3021 u = manager_get_unit(m, SPECIAL_BASIC_TARGET);
3022 if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u)))
3023 return MANAGER_INITIALIZING;
3024
3025 return MANAGER_STARTING;
3026 }
3027
3028 /* Is the special shutdown target queued? If so, we are in shutdown state */
3029 u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
3030 if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))
3031 return MANAGER_STOPPING;
3032
3033 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
3034 u = manager_get_unit(m, SPECIAL_RESCUE_TARGET);
3035 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3036 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3037 return MANAGER_MAINTENANCE;
3038
3039 u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET);
3040 if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) ||
3041 (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START))))
3042 return MANAGER_MAINTENANCE;
3043
3044 /* Are there any failed units? If so, we are in degraded mode */
3045 if (set_size(m->failed_units) > 0)
3046 return MANAGER_DEGRADED;
3047
3048 return MANAGER_RUNNING;
3049 }
3050
3051 static const char *const manager_state_table[_MANAGER_STATE_MAX] = {
3052 [MANAGER_INITIALIZING] = "initializing",
3053 [MANAGER_STARTING] = "starting",
3054 [MANAGER_RUNNING] = "running",
3055 [MANAGER_DEGRADED] = "degraded",
3056 [MANAGER_MAINTENANCE] = "maintenance",
3057 [MANAGER_STOPPING] = "stopping",
3058 };
3059
3060 DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState);
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