1 /* SPDX-License-Identifier: LGPL-2.1+ */
7 #include <sys/inotify.h>
9 #include <sys/reboot.h>
10 #include <sys/timerfd.h>
18 #include "sd-daemon.h"
19 #include "sd-messages.h"
22 #include "all-units.h"
23 #include "alloc-util.h"
25 #include "boot-timestamps.h"
26 #include "bus-common-errors.h"
27 #include "bus-error.h"
28 #include "bus-kernel.h"
30 #include "clean-ipc.h"
31 #include "clock-util.h"
32 #include "core-varlink.h"
34 #include "dbus-manager.h"
35 #include "dbus-unit.h"
38 #include "dirent-util.h"
41 #include "exec-util.h"
43 #include "exit-status.h"
47 #include "generator-setup.h"
52 #include "locale-setup.h"
56 #include "memory-util.h"
58 #include "parse-util.h"
59 #include "path-lookup.h"
60 #include "path-util.h"
61 #include "process-util.h"
62 #include "ratelimit.h"
63 #include "rlimit-util.h"
65 #include "serialize.h"
66 #include "signal-util.h"
67 #include "socket-util.h"
69 #include "stat-util.h"
70 #include "string-table.h"
71 #include "string-util.h"
74 #include "sysctl-util.h"
75 #include "syslog-util.h"
76 #include "terminal-util.h"
77 #include "time-util.h"
78 #include "transaction.h"
79 #include "umask-util.h"
80 #include "unit-name.h"
81 #include "user-util.h"
85 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
86 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
88 /* Initial delay and the interval for printing status messages about running jobs */
89 #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC)
90 #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC)
91 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
92 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
94 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
95 * the queue gets more empty. */
96 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
98 /* How many units and jobs to process of the bus queue before returning to the event loop. */
99 #define MANAGER_BUS_MESSAGE_BUDGET 100U
101 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
106 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
107 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
108 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
109 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
110 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
111 static int manager_run_environment_generators(Manager
*m
);
112 static int manager_run_generators(Manager
*m
);
114 static usec_t
manager_watch_jobs_next_time(Manager
*m
) {
115 return usec_add(now(CLOCK_MONOTONIC
),
116 show_status_on(m
->show_status
) ? JOBS_IN_PROGRESS_WAIT_USEC
:
117 JOBS_IN_PROGRESS_QUIET_WAIT_USEC
);
120 static void manager_watch_jobs_in_progress(Manager
*m
) {
126 /* We do not want to show the cylon animation if the user
127 * needs to confirm service executions otherwise confirmation
128 * messages will be screwed by the cylon animation. */
129 if (!manager_is_confirm_spawn_disabled(m
))
132 if (m
->jobs_in_progress_event_source
)
135 next
= manager_watch_jobs_next_time(m
);
136 r
= sd_event_add_time(
138 &m
->jobs_in_progress_event_source
,
141 manager_dispatch_jobs_in_progress
, m
);
145 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
148 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
150 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
153 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
154 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
158 p
= mempset(p
, ' ', pos
-2);
159 if (log_get_show_color())
160 p
= stpcpy(p
, ANSI_RED
);
164 if (pos
> 0 && pos
<= width
) {
165 if (log_get_show_color())
166 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
170 if (log_get_show_color())
171 p
= stpcpy(p
, ANSI_NORMAL
);
174 if (log_get_show_color())
175 p
= stpcpy(p
, ANSI_RED
);
178 p
= mempset(p
, ' ', width
-1-pos
);
179 if (log_get_show_color())
180 strcpy(p
, ANSI_NORMAL
);
184 void manager_flip_auto_status(Manager
*m
, bool enable
, const char *reason
) {
188 if (m
->show_status
== SHOW_STATUS_AUTO
)
189 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
, reason
);
191 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
192 manager_set_show_status(m
, SHOW_STATUS_AUTO
, reason
);
196 static void manager_print_jobs_in_progress(Manager
*m
) {
197 _cleanup_free_
char *job_of_n
= NULL
;
200 unsigned counter
= 0, print_nr
;
201 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
203 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
207 assert(m
->n_running_jobs
> 0);
209 manager_flip_auto_status(m
, true, "delay");
211 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
213 HASHMAP_FOREACH(j
, m
->jobs
, i
)
214 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
217 /* m->n_running_jobs must be consistent with the contents of m->jobs,
218 * so the above loop must have succeeded in finding j. */
219 assert(counter
== print_nr
+ 1);
222 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
224 cylon_pos
= 14 - cylon_pos
;
225 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
227 m
->jobs_in_progress_iteration
++;
229 if (m
->n_running_jobs
> 1) {
230 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
234 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
235 if (job_get_timeout(j
, &x
) > 0)
236 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
238 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
239 "%sA %s job is running for %s (%s / %s)",
241 job_type_to_string(j
->type
),
242 unit_status_string(j
->unit
),
246 static int have_ask_password(void) {
247 _cleanup_closedir_
DIR *dir
;
250 dir
= opendir("/run/systemd/ask-password");
258 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
259 if (startswith(de
->d_name
, "ask."))
265 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
266 int fd
, uint32_t revents
, void *userdata
) {
267 Manager
*m
= userdata
;
273 m
->have_ask_password
= have_ask_password();
274 if (m
->have_ask_password
< 0)
275 /* Log error but continue. Negative have_ask_password
276 * is treated as unknown status. */
277 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
282 static void manager_close_ask_password(Manager
*m
) {
285 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
286 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
287 m
->have_ask_password
= -EINVAL
;
290 static int manager_check_ask_password(Manager
*m
) {
295 if (!m
->ask_password_event_source
) {
296 assert(m
->ask_password_inotify_fd
< 0);
298 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
300 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
301 if (m
->ask_password_inotify_fd
< 0)
302 return log_error_errno(errno
, "Failed to create inotify object: %m");
304 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
305 "/run/systemd/ask-password",
306 IN_CREATE
|IN_DELETE
|IN_MOVE
);
308 manager_close_ask_password(m
);
312 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
313 m
->ask_password_inotify_fd
, EPOLLIN
,
314 manager_dispatch_ask_password_fd
, m
);
316 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
317 manager_close_ask_password(m
);
321 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
323 /* Queries might have been added meanwhile... */
324 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
325 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
328 return m
->have_ask_password
;
331 static int manager_watch_idle_pipe(Manager
*m
) {
336 if (m
->idle_pipe_event_source
)
339 if (m
->idle_pipe
[2] < 0)
342 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
344 return log_error_errno(r
, "Failed to watch idle pipe: %m");
346 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
351 static void manager_close_idle_pipe(Manager
*m
) {
354 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
356 safe_close_pair(m
->idle_pipe
);
357 safe_close_pair(m
->idle_pipe
+ 2);
360 static int manager_setup_time_change(Manager
*m
) {
365 if (MANAGER_IS_TEST_RUN(m
))
368 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
369 m
->time_change_fd
= safe_close(m
->time_change_fd
);
371 m
->time_change_fd
= time_change_fd();
372 if (m
->time_change_fd
< 0)
373 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
375 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
377 return log_error_errno(r
, "Failed to create time change event source: %m");
379 /* Schedule this slightly earlier than the .timer event sources */
380 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
382 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
384 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
386 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
391 static int manager_read_timezone_stat(Manager
*m
) {
397 /* Read the current stat() data of /etc/localtime so that we detect changes */
398 if (lstat("/etc/localtime", &st
) < 0) {
399 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
400 changed
= m
->etc_localtime_accessible
;
401 m
->etc_localtime_accessible
= false;
405 k
= timespec_load(&st
.st_mtim
);
406 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
408 m
->etc_localtime_mtime
= k
;
409 m
->etc_localtime_accessible
= true;
415 static int manager_setup_timezone_change(Manager
*m
) {
416 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
421 if (MANAGER_IS_TEST_RUN(m
))
424 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
425 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
426 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
427 * went to zero and all fds to it are closed.
429 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
432 * Note that we create the new event source first here, before releasing the old one. This should optimize
433 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
435 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
436 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
438 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
439 * O_CREATE or by rename() */
441 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
442 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
443 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
446 return log_error_errno(r
, "Failed to create timezone change event source: %m");
448 /* Schedule this slightly earlier than the .timer event sources */
449 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
451 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
453 sd_event_source_unref(m
->timezone_change_event_source
);
454 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
459 static int enable_special_signals(Manager
*m
) {
460 _cleanup_close_
int fd
= -1;
464 if (MANAGER_IS_TEST_RUN(m
))
467 /* Enable that we get SIGINT on control-alt-del. In containers
468 * this will fail with EPERM (older) or EINVAL (newer), so
470 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
471 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
473 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
475 /* Support systems without virtual console */
477 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
479 /* Enable that we get SIGWINCH on kbrequest */
480 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
481 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
487 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
489 static int manager_setup_signals(Manager
*m
) {
490 struct sigaction sa
= {
491 .sa_handler
= SIG_DFL
,
492 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
499 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
501 /* We make liberal use of realtime signals here. On
502 * Linux/glibc we have 30 of them (with the exception of Linux
503 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
506 assert_se(sigemptyset(&mask
) == 0);
507 sigset_add_many(&mask
,
508 SIGCHLD
, /* Child died */
509 SIGTERM
, /* Reexecute daemon */
510 SIGHUP
, /* Reload configuration */
511 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
512 SIGUSR2
, /* systemd: dump status */
513 SIGINT
, /* Kernel sends us this on control-alt-del */
514 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
515 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
517 SIGRTMIN
+0, /* systemd: start default.target */
518 SIGRTMIN
+1, /* systemd: isolate rescue.target */
519 SIGRTMIN
+2, /* systemd: isolate emergency.target */
520 SIGRTMIN
+3, /* systemd: start halt.target */
521 SIGRTMIN
+4, /* systemd: start poweroff.target */
522 SIGRTMIN
+5, /* systemd: start reboot.target */
523 SIGRTMIN
+6, /* systemd: start kexec.target */
525 /* ... space for more special targets ... */
527 SIGRTMIN
+13, /* systemd: Immediate halt */
528 SIGRTMIN
+14, /* systemd: Immediate poweroff */
529 SIGRTMIN
+15, /* systemd: Immediate reboot */
530 SIGRTMIN
+16, /* systemd: Immediate kexec */
532 /* ... space for more immediate system state changes ... */
534 SIGRTMIN
+20, /* systemd: enable status messages */
535 SIGRTMIN
+21, /* systemd: disable status messages */
536 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
537 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
538 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
540 /* .. one free signal here ... */
542 /* Apparently Linux on hppa had fewer RT signals until v3.18,
543 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
544 * see commit v3.17-7614-g1f25df2eff.
546 * We cannot unconditionally make use of those signals here,
547 * so let's use a runtime check. Since these commands are
548 * accessible by different means and only really a safety
549 * net, the missing functionality on hppa shouldn't matter.
552 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
553 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
554 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
555 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
557 /* ... one free signal here SIGRTMIN+30 ... */
559 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
561 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
562 if (m
->signal_fd
< 0)
565 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
569 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
571 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
572 * notify processing can still figure out to which process/service a message belongs, before we reap the
573 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
574 * status information before detecting that there's no process in a cgroup. */
575 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
579 if (MANAGER_IS_SYSTEM(m
))
580 return enable_special_signals(m
);
585 static char** sanitize_environment(char **l
) {
587 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
608 /* Let's order the environment alphabetically, just to make it pretty */
614 int manager_default_environment(Manager
*m
) {
619 m
->transient_environment
= strv_free(m
->transient_environment
);
621 if (MANAGER_IS_SYSTEM(m
)) {
622 /* The system manager always starts with a clean
623 * environment for its children. It does not import
624 * the kernel's or the parents' exported variables.
626 * The initial passed environment is untouched to keep
627 * /proc/self/environ valid; it is used for tagging
628 * the init process inside containers. */
629 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
630 if (!m
->transient_environment
)
633 /* Import locale variables LC_*= from configuration */
634 (void) locale_setup(&m
->transient_environment
);
636 _cleanup_free_
char *k
= NULL
;
638 /* The user manager passes its own environment
639 * along to its children, except for $PATH. */
640 m
->transient_environment
= strv_copy(environ
);
641 if (!m
->transient_environment
)
644 k
= strdup("PATH=" DEFAULT_USER_PATH
);
648 r
= strv_env_replace(&m
->transient_environment
, k
);
654 sanitize_environment(m
->transient_environment
);
659 static int manager_setup_prefix(Manager
*m
) {
665 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
666 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
667 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
668 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
669 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
670 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
673 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
674 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
675 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
676 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
677 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
678 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
681 const struct table_entry
*p
;
687 if (MANAGER_IS_SYSTEM(m
))
692 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
693 r
= sd_path_lookup(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
701 static void manager_free_unit_name_maps(Manager
*m
) {
702 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
703 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
704 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
705 m
->unit_cache_mtime
= 0;
708 static int manager_setup_run_queue(Manager
*m
) {
712 assert(!m
->run_queue_event_source
);
714 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
718 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
722 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
726 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
731 static int manager_setup_sigchld_event_source(Manager
*m
) {
735 assert(!m
->sigchld_event_source
);
737 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
741 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
745 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
749 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
754 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
755 _cleanup_(manager_freep
) Manager
*m
= NULL
;
759 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
766 .unit_file_scope
= scope
,
767 .objective
= _MANAGER_OBJECTIVE_INVALID
,
769 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
771 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
772 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
773 .default_tasks_accounting
= true,
774 .default_tasks_max
= TASKS_MAX_UNSET
,
775 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
776 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
777 .default_restart_usec
= DEFAULT_RESTART_USEC
,
779 .original_log_level
= -1,
780 .original_log_target
= _LOG_TARGET_INVALID
,
783 .cgroups_agent_fd
= -1,
785 .time_change_fd
= -1,
786 .user_lookup_fds
= { -1, -1 },
787 .private_listen_fd
= -1,
789 .cgroup_inotify_fd
= -1,
790 .pin_cgroupfs_fd
= -1,
791 .ask_password_inotify_fd
= -1,
792 .idle_pipe
= { -1, -1, -1, -1},
794 /* start as id #1, so that we can leave #0 around as "null-like" value */
797 .have_ask_password
= -EINVAL
, /* we don't know */
799 .test_run_flags
= test_run_flags
,
801 .default_oom_policy
= OOM_STOP
,
805 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
806 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
807 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
808 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
811 /* Prepare log fields we can use for structured logging */
812 if (MANAGER_IS_SYSTEM(m
)) {
813 m
->unit_log_field
= "UNIT=";
814 m
->unit_log_format_string
= "UNIT=%s";
816 m
->invocation_log_field
= "INVOCATION_ID=";
817 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
819 m
->unit_log_field
= "USER_UNIT=";
820 m
->unit_log_format_string
= "USER_UNIT=%s";
822 m
->invocation_log_field
= "USER_INVOCATION_ID=";
823 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
826 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
827 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
829 r
= manager_default_environment(m
);
833 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
837 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
841 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
845 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
849 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
853 r
= manager_setup_prefix(m
);
857 r
= sd_event_default(&m
->event
);
861 r
= manager_setup_run_queue(m
);
865 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
866 m
->cgroup_root
= strdup("");
870 r
= manager_setup_signals(m
);
874 r
= manager_setup_cgroup(m
);
878 r
= manager_setup_time_change(m
);
882 r
= manager_read_timezone_stat(m
);
886 (void) manager_setup_timezone_change(m
);
888 r
= manager_setup_sigchld_event_source(m
);
893 if (test_run_flags
== 0) {
894 if (MANAGER_IS_SYSTEM(m
))
895 r
= mkdir_label("/run/systemd/units", 0755);
897 _cleanup_free_
char *units_path
= NULL
;
898 r
= xdg_user_runtime_dir(&units_path
, "/systemd/units");
901 r
= mkdir_p_label(units_path
, 0755);
904 if (r
< 0 && r
!= -EEXIST
)
910 dir_is_empty("/usr") > 0;
912 /* Note that we do not set up the notify fd here. We do that after deserialization,
913 * since they might have gotten serialized across the reexec. */
920 static int manager_setup_notify(Manager
*m
) {
923 if (MANAGER_IS_TEST_RUN(m
))
926 if (m
->notify_fd
< 0) {
927 _cleanup_close_
int fd
= -1;
928 union sockaddr_union sa
;
931 /* First free all secondary fields */
932 m
->notify_socket
= mfree(m
->notify_socket
);
933 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
935 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
937 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
939 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
941 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
942 if (!m
->notify_socket
)
945 r
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
947 return log_error_errno(r
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.",
951 (void) mkdir_parents_label(m
->notify_socket
, 0755);
952 (void) sockaddr_un_unlink(&sa
.un
);
954 r
= bind(fd
, &sa
.sa
, sa_len
);
956 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
958 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
960 return log_error_errno(r
, "SO_PASSCRED failed: %m");
962 m
->notify_fd
= TAKE_FD(fd
);
964 log_debug("Using notification socket %s", m
->notify_socket
);
967 if (!m
->notify_event_source
) {
968 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
970 return log_error_errno(r
, "Failed to allocate notify event source: %m");
972 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
973 * service an exit message belongs. */
974 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
976 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
978 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
984 static int manager_setup_cgroups_agent(Manager
*m
) {
986 static const union sockaddr_union sa
= {
987 .un
.sun_family
= AF_UNIX
,
988 .un
.sun_path
= "/run/systemd/cgroups-agent",
992 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
993 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
994 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
995 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
996 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
997 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
998 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
999 * we thus won't lose messages.
1001 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
1002 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
1003 * bus for these messages. */
1005 if (MANAGER_IS_TEST_RUN(m
))
1008 if (!MANAGER_IS_SYSTEM(m
))
1011 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
1013 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
1014 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
1017 if (m
->cgroups_agent_fd
< 0) {
1018 _cleanup_close_
int fd
= -1;
1020 /* First free all secondary fields */
1021 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1023 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1025 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1027 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1029 (void) sockaddr_un_unlink(&sa
.un
);
1031 /* Only allow root to connect to this socket */
1032 RUN_WITH_UMASK(0077)
1033 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1035 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1037 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1040 if (!m
->cgroups_agent_event_source
) {
1041 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1043 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1045 /* Process cgroups notifications early. Note that when the agent notification is received
1046 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1047 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1048 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1050 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1052 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1058 static int manager_setup_user_lookup_fd(Manager
*m
) {
1063 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1064 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1065 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1066 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1067 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1068 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1069 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1070 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1073 * You might wonder why we need a communication channel for this that is independent of the usual notification
1074 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1075 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1076 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1078 * Note that this function is called under two circumstances: when we first initialize (in which case we
1079 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1080 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1082 if (m
->user_lookup_fds
[0] < 0) {
1084 /* Free all secondary fields */
1085 safe_close_pair(m
->user_lookup_fds
);
1086 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1088 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1089 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1091 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1094 if (!m
->user_lookup_event_source
) {
1095 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1097 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1099 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1101 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1103 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1105 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1111 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1117 while ((u
= m
->cleanup_queue
)) {
1118 assert(u
->in_cleanup_queue
);
1128 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1129 GC_OFFSET_UNSURE
, /* No clue */
1130 GC_OFFSET_GOOD
, /* We still need this unit */
1131 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1135 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1140 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1142 /* Recursively mark referenced units as GOOD as well */
1143 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1144 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1145 unit_gc_mark_good(other
, gc_marker
);
1148 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1156 if (IN_SET(u
->gc_marker
- gc_marker
,
1157 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1160 if (u
->in_cleanup_queue
)
1163 if (!unit_may_gc(u
))
1166 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1170 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1171 unit_gc_sweep(other
, gc_marker
);
1173 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1176 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1180 if (u
->refs_by_target
) {
1183 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1184 unit_gc_sweep(ref
->source
, gc_marker
);
1186 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1189 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1197 /* We were unable to find anything out about this entry, so
1198 * let's investigate it later */
1199 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1200 unit_add_to_gc_queue(u
);
1204 /* We definitely know that this one is not useful anymore, so
1205 * let's mark it for deletion */
1206 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1207 unit_add_to_cleanup_queue(u
);
1211 unit_gc_mark_good(u
, gc_marker
);
1214 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1215 unsigned n
= 0, gc_marker
;
1220 /* log_debug("Running GC..."); */
1222 m
->gc_marker
+= _GC_OFFSET_MAX
;
1223 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1226 gc_marker
= m
->gc_marker
;
1228 while ((u
= m
->gc_unit_queue
)) {
1229 assert(u
->in_gc_queue
);
1231 unit_gc_sweep(u
, gc_marker
);
1233 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1234 u
->in_gc_queue
= false;
1238 if (IN_SET(u
->gc_marker
- gc_marker
,
1239 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1241 log_unit_debug(u
, "Collecting.");
1242 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1243 unit_add_to_cleanup_queue(u
);
1250 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1256 while ((j
= m
->gc_job_queue
)) {
1257 assert(j
->in_gc_queue
);
1259 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1260 j
->in_gc_queue
= false;
1267 log_unit_debug(j
->unit
, "Collecting job.");
1268 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1274 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1281 while ((u
= m
->stop_when_unneeded_queue
)) {
1282 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1283 assert(m
->stop_when_unneeded_queue
);
1285 assert(u
->in_stop_when_unneeded_queue
);
1286 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1287 u
->in_stop_when_unneeded_queue
= false;
1291 if (!unit_is_unneeded(u
))
1294 log_unit_debug(u
, "Unit is not needed anymore.");
1296 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1297 * service being unnecessary after a while. */
1299 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1300 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1304 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1305 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1307 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1313 static void manager_clear_jobs_and_units(Manager
*m
) {
1318 while ((u
= hashmap_first(m
->units
)))
1321 manager_dispatch_cleanup_queue(m
);
1323 assert(!m
->load_queue
);
1324 assert(prioq_isempty(m
->run_queue
));
1325 assert(!m
->dbus_unit_queue
);
1326 assert(!m
->dbus_job_queue
);
1327 assert(!m
->cleanup_queue
);
1328 assert(!m
->gc_unit_queue
);
1329 assert(!m
->gc_job_queue
);
1330 assert(!m
->stop_when_unneeded_queue
);
1332 assert(hashmap_isempty(m
->jobs
));
1333 assert(hashmap_isempty(m
->units
));
1335 m
->n_on_console
= 0;
1336 m
->n_running_jobs
= 0;
1337 m
->n_installed_jobs
= 0;
1338 m
->n_failed_jobs
= 0;
1341 Manager
* manager_free(Manager
*m
) {
1342 ExecDirectoryType dt
;
1348 manager_clear_jobs_and_units(m
);
1350 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1351 if (unit_vtable
[c
]->shutdown
)
1352 unit_vtable
[c
]->shutdown(m
);
1354 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1355 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1357 lookup_paths_flush_generator(&m
->lookup_paths
);
1360 manager_varlink_done(m
);
1362 exec_runtime_vacuum(m
);
1363 hashmap_free(m
->exec_runtime_by_id
);
1365 dynamic_user_vacuum(m
, false);
1366 hashmap_free(m
->dynamic_users
);
1368 hashmap_free(m
->units
);
1369 hashmap_free(m
->units_by_invocation_id
);
1370 hashmap_free(m
->jobs
);
1371 hashmap_free(m
->watch_pids
);
1372 hashmap_free(m
->watch_bus
);
1374 prioq_free(m
->run_queue
);
1376 set_free(m
->startup_units
);
1377 set_free(m
->failed_units
);
1379 sd_event_source_unref(m
->signal_event_source
);
1380 sd_event_source_unref(m
->sigchld_event_source
);
1381 sd_event_source_unref(m
->notify_event_source
);
1382 sd_event_source_unref(m
->cgroups_agent_event_source
);
1383 sd_event_source_unref(m
->time_change_event_source
);
1384 sd_event_source_unref(m
->timezone_change_event_source
);
1385 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1386 sd_event_source_unref(m
->run_queue_event_source
);
1387 sd_event_source_unref(m
->user_lookup_event_source
);
1389 safe_close(m
->signal_fd
);
1390 safe_close(m
->notify_fd
);
1391 safe_close(m
->cgroups_agent_fd
);
1392 safe_close(m
->time_change_fd
);
1393 safe_close_pair(m
->user_lookup_fds
);
1395 manager_close_ask_password(m
);
1397 manager_close_idle_pipe(m
);
1399 sd_event_unref(m
->event
);
1401 free(m
->notify_socket
);
1403 lookup_paths_free(&m
->lookup_paths
);
1404 strv_free(m
->transient_environment
);
1405 strv_free(m
->client_environment
);
1407 hashmap_free(m
->cgroup_unit
);
1408 manager_free_unit_name_maps(m
);
1410 free(m
->switch_root
);
1411 free(m
->switch_root_init
);
1413 rlimit_free_all(m
->rlimit
);
1415 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1416 hashmap_free(m
->units_requiring_mounts_for
);
1418 hashmap_free(m
->uid_refs
);
1419 hashmap_free(m
->gid_refs
);
1421 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1422 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1427 static void manager_enumerate_perpetual(Manager
*m
) {
1432 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1435 /* Let's ask every type to load all units from disk/kernel that it might know */
1436 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1437 if (!unit_type_supported(c
)) {
1438 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1442 if (unit_vtable
[c
]->enumerate_perpetual
)
1443 unit_vtable
[c
]->enumerate_perpetual(m
);
1447 static void manager_enumerate(Manager
*m
) {
1452 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1455 /* Let's ask every type to load all units from disk/kernel that it might know */
1456 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1457 if (!unit_type_supported(c
)) {
1458 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1462 if (unit_vtable
[c
]->enumerate
)
1463 unit_vtable
[c
]->enumerate(m
);
1466 manager_dispatch_load_queue(m
);
1469 static void manager_coldplug(Manager
*m
) {
1477 log_debug("Invoking unit coldplug() handlers…");
1479 /* Let's place the units back into their deserialized state */
1480 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1482 /* ignore aliases */
1486 r
= unit_coldplug(u
);
1488 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1492 static void manager_catchup(Manager
*m
) {
1499 log_debug("Invoking unit catchup() handlers…");
1501 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1502 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1504 /* ignore aliases */
1512 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1518 HASHMAP_FOREACH(u
, m
->units
, i
) {
1520 if (fdset_size(fds
) <= 0)
1523 if (!UNIT_VTABLE(u
)->distribute_fds
)
1526 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1530 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1535 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1536 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1537 * rather than the current one. */
1539 if (MANAGER_IS_TEST_RUN(m
))
1542 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1545 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1548 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1551 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1557 static void manager_setup_bus(Manager
*m
) {
1560 /* Let's set up our private bus connection now, unconditionally */
1561 (void) bus_init_private(m
);
1563 /* If we are in --user mode also connect to the system bus now */
1564 if (MANAGER_IS_USER(m
))
1565 (void) bus_init_system(m
);
1567 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1568 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1569 (void) bus_init_api(m
);
1571 if (MANAGER_IS_SYSTEM(m
))
1572 (void) bus_init_system(m
);
1576 static void manager_preset_all(Manager
*m
) {
1581 if (m
->first_boot
<= 0)
1584 if (!MANAGER_IS_SYSTEM(m
))
1587 if (MANAGER_IS_TEST_RUN(m
))
1590 /* If this is the first boot, and we are in the host system, then preset everything */
1591 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1593 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1594 "Failed to populate /etc with preset unit settings, ignoring: %m");
1596 log_info("Populated /etc with preset unit settings.");
1599 static void manager_vacuum(Manager
*m
) {
1602 /* Release any dynamic users no longer referenced */
1603 dynamic_user_vacuum(m
, true);
1605 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1606 manager_vacuum_uid_refs(m
);
1607 manager_vacuum_gid_refs(m
);
1609 /* Release any runtimes no longer referenced */
1610 exec_runtime_vacuum(m
);
1613 static void manager_ready(Manager
*m
) {
1616 /* After having loaded everything, do the final round of catching up with what might have changed */
1618 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1620 /* It might be safe to log to the journal now and connect to dbus */
1621 manager_recheck_journal(m
);
1622 manager_recheck_dbus(m
);
1624 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1627 m
->honor_device_enumeration
= true;
1630 static Manager
* manager_reloading_start(Manager
*m
) {
1634 static void manager_reloading_stopp(Manager
**m
) {
1636 assert((*m
)->n_reloading
> 0);
1637 (*m
)->n_reloading
--;
1641 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1646 /* If we are running in test mode, we still want to run the generators,
1647 * but we should not touch the real generator directories. */
1648 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1649 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1652 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1654 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1655 r
= manager_run_environment_generators(m
);
1657 r
= manager_run_generators(m
);
1658 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1662 manager_preset_all(m
);
1664 lookup_paths_log(&m
->lookup_paths
);
1667 /* This block is (optionally) done with the reloading counter bumped */
1668 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1670 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1671 * counter here already */
1673 reloading
= manager_reloading_start(m
);
1675 /* First, enumerate what we can from all config files */
1676 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1677 manager_enumerate_perpetual(m
);
1678 manager_enumerate(m
);
1679 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1681 /* Second, deserialize if there is something to deserialize */
1682 if (serialization
) {
1683 r
= manager_deserialize(m
, serialization
, fds
);
1685 return log_error_errno(r
, "Deserialization failed: %m");
1688 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1689 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1691 manager_distribute_fds(m
, fds
);
1693 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1694 r
= manager_setup_notify(m
);
1696 /* No sense to continue without notifications, our children would fail anyway. */
1699 r
= manager_setup_cgroups_agent(m
);
1701 /* Likewise, no sense to continue without empty cgroup notifications. */
1704 r
= manager_setup_user_lookup_fd(m
);
1706 /* This shouldn't fail, except if things are really broken. */
1709 /* Connect to the bus if we are good for it */
1710 manager_setup_bus(m
);
1712 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1713 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1715 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1716 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1718 r
= manager_varlink_init(m
);
1720 log_warning_errno(r
, "Failed to set up Varlink server, ignoring: %m");
1722 /* Third, fire things up! */
1723 manager_coldplug(m
);
1725 /* Clean up runtime objects */
1729 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1730 * reload is finished */
1731 m
->send_reloading_done
= true;
1739 int manager_add_job(
1745 sd_bus_error
*error
,
1752 assert(type
< _JOB_TYPE_MAX
);
1754 assert(mode
< _JOB_MODE_MAX
);
1756 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1757 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1759 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1760 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1762 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1763 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1765 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1767 type
= job_type_collapse(type
, unit
);
1769 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1773 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1774 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1775 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1779 if (mode
== JOB_ISOLATE
) {
1780 r
= transaction_add_isolate_jobs(tr
, m
);
1785 if (mode
== JOB_TRIGGERING
) {
1786 r
= transaction_add_triggering_jobs(tr
, unit
);
1791 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1795 log_unit_debug(unit
,
1796 "Enqueued job %s/%s as %u", unit
->id
,
1797 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1800 *ret
= tr
->anchor_job
;
1802 transaction_free(tr
);
1806 transaction_abort(tr
);
1807 transaction_free(tr
);
1811 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1812 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1816 assert(type
< _JOB_TYPE_MAX
);
1818 assert(mode
< _JOB_MODE_MAX
);
1820 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1825 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1828 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1829 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1833 assert(type
< _JOB_TYPE_MAX
);
1835 assert(mode
< _JOB_MODE_MAX
);
1837 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1839 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1844 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1850 assert(mode
< _JOB_MODE_MAX
);
1851 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1853 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1857 /* We need an anchor job */
1858 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1862 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1863 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1865 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1869 transaction_free(tr
);
1873 transaction_abort(tr
);
1874 transaction_free(tr
);
1878 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1881 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1884 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1888 return hashmap_get(m
->units
, name
);
1891 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1896 static const UnitDependency deps
[] = {
1905 while ((u
= m
->target_deps_queue
)) {
1906 assert(u
->in_target_deps_queue
);
1908 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1909 u
->in_target_deps_queue
= false;
1911 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1916 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1917 r
= unit_add_default_target_dependency(u
, target
);
1927 unsigned manager_dispatch_load_queue(Manager
*m
) {
1933 /* Make sure we are not run recursively */
1934 if (m
->dispatching_load_queue
)
1937 m
->dispatching_load_queue
= true;
1939 /* Dispatches the load queue. Takes a unit from the queue and
1940 * tries to load its data until the queue is empty */
1942 while ((u
= m
->load_queue
)) {
1943 assert(u
->in_load_queue
);
1949 m
->dispatching_load_queue
= false;
1951 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1952 * should be loaded and have aliases resolved */
1953 (void) manager_dispatch_target_deps_queue(m
);
1958 int manager_load_unit_prepare(
1965 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1971 assert(name
|| path
);
1974 /* This will prepare the unit for loading, but not actually
1975 * load anything from disk. */
1977 if (path
&& !is_path(path
))
1978 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1981 name
= basename(path
);
1983 t
= unit_name_to_type(name
);
1985 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1986 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1987 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1989 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1992 ret
= manager_get_unit(m
, name
);
1998 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
2003 ret
->fragment_path
= strdup(path
);
2004 if (!ret
->fragment_path
)
2008 r
= unit_add_name(ret
, name
);
2012 unit_add_to_load_queue(ret
);
2013 unit_add_to_dbus_queue(ret
);
2014 unit_add_to_gc_queue(ret
);
2022 int manager_load_unit(
2034 /* This will load the service information files, but not actually
2035 * start any services or anything. */
2037 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2041 manager_dispatch_load_queue(m
);
2043 *_ret
= unit_follow_merge(*_ret
);
2047 int manager_load_startable_unit_or_warn(
2053 /* Load a unit, make sure it loaded fully and is not masked. */
2055 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2059 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2061 return log_error_errno(r
, "Failed to load %s %s: %s",
2062 name
? "unit" : "unit file", name
?: path
,
2063 bus_error_message(&error
, r
));
2065 r
= bus_unit_validate_load_state(unit
, &error
);
2067 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2073 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2080 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2081 job_dump(j
, f
, prefix
);
2084 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2092 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2094 unit_dump(u
, f
, prefix
);
2097 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2103 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2104 const dual_timestamp
*t
= m
->timestamps
+ q
;
2105 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2107 if (dual_timestamp_is_set(t
))
2108 fprintf(f
, "%sTimestamp %s: %s\n",
2110 manager_timestamp_to_string(q
),
2111 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2112 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2115 manager_dump_units(m
, f
, prefix
);
2116 manager_dump_jobs(m
, f
, prefix
);
2119 int manager_get_dump_string(Manager
*m
, char **ret
) {
2120 _cleanup_free_
char *dump
= NULL
;
2121 _cleanup_fclose_
FILE *f
= NULL
;
2128 f
= open_memstream_unlocked(&dump
, &size
);
2132 manager_dump(m
, f
, NULL
);
2134 r
= fflush_and_check(f
);
2140 *ret
= TAKE_PTR(dump
);
2145 void manager_clear_jobs(Manager
*m
) {
2150 while ((j
= hashmap_first(m
->jobs
)))
2151 /* No need to recurse. We're cancelling all jobs. */
2152 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2155 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2158 /* First let's drop the unit keyed as "pid". */
2159 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2161 /* Then, let's also drop the array keyed by -pid. */
2162 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2165 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2166 Manager
*m
= userdata
;
2172 while ((j
= prioq_peek(m
->run_queue
))) {
2173 assert(j
->installed
);
2174 assert(j
->in_run_queue
);
2176 (void) job_run_and_invalidate(j
);
2179 if (m
->n_running_jobs
> 0)
2180 manager_watch_jobs_in_progress(m
);
2182 if (m
->n_on_console
> 0)
2183 manager_watch_idle_pipe(m
);
2188 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2189 unsigned n
= 0, budget
;
2195 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2196 * as we can. There's no point in throttling generation of signals in that case. */
2197 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2198 budget
= (unsigned) -1; /* infinite budget in this case */
2200 /* Anything to do at all? */
2201 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2204 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2205 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2206 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2209 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2210 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2211 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2212 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2213 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2214 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2215 * connections it will be counted five times. This difference in counting ("references"
2216 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2217 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2218 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2219 * currently chosen much higher than the "budget". */
2220 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2223 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2225 assert(u
->in_dbus_queue
);
2227 bus_unit_send_change_signal(u
);
2230 if (budget
!= (unsigned) -1)
2234 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2235 assert(j
->in_dbus_queue
);
2237 bus_job_send_change_signal(j
);
2240 if (budget
!= (unsigned) -1)
2244 if (m
->send_reloading_done
) {
2245 m
->send_reloading_done
= false;
2246 bus_manager_send_reloading(m
, false);
2250 if (m
->pending_reload_message
) {
2251 bus_send_pending_reload_message(m
);
2258 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2259 Manager
*m
= userdata
;
2263 n
= recv(fd
, buf
, sizeof(buf
), 0);
2265 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2267 log_error("Got zero-length cgroups agent message, ignoring.");
2270 if ((size_t) n
>= sizeof(buf
)) {
2271 log_error("Got overly long cgroups agent message, ignoring.");
2275 if (memchr(buf
, 0, n
)) {
2276 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2281 manager_notify_cgroup_empty(m
, buf
);
2282 (void) bus_forward_agent_released(m
, buf
);
2287 static void manager_invoke_notify_message(
2290 const struct ucred
*ucred
,
2299 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2301 u
->notifygen
= m
->notifygen
;
2303 if (UNIT_VTABLE(u
)->notify_message
) {
2304 _cleanup_strv_free_
char **tags
= NULL
;
2306 tags
= strv_split(buf
, NEWLINE
);
2312 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2314 } else if (DEBUG_LOGGING
) {
2315 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2317 x
= ellipsize(buf
, 20, 90);
2321 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2325 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2327 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2328 Manager
*m
= userdata
;
2329 char buf
[NOTIFY_BUFFER_MAX
+1];
2330 struct iovec iovec
= {
2332 .iov_len
= sizeof(buf
)-1,
2335 struct cmsghdr cmsghdr
;
2336 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2337 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2339 struct msghdr msghdr
= {
2342 .msg_control
= &control
,
2343 .msg_controllen
= sizeof(control
),
2346 struct cmsghdr
*cmsg
;
2347 struct ucred
*ucred
= NULL
;
2348 _cleanup_free_ Unit
**array_copy
= NULL
;
2349 Unit
*u1
, *u2
, **array
;
2350 int r
, *fd_array
= NULL
;
2356 assert(m
->notify_fd
== fd
);
2358 if (revents
!= EPOLLIN
) {
2359 log_warning("Got unexpected poll event for notify fd.");
2363 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2365 if (IN_SET(errno
, EAGAIN
, EINTR
))
2366 return 0; /* Spurious wakeup, try again */
2368 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2369 * won't take notification messages anymore, but that's still better than busy looping around this:
2370 * being woken up over and over again but being unable to actually read the message off the socket. */
2371 return log_error_errno(errno
, "Failed to receive notification message: %m");
2374 CMSG_FOREACH(cmsg
, &msghdr
) {
2375 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2377 fd_array
= (int*) CMSG_DATA(cmsg
);
2378 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2380 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2381 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2382 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2384 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2391 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2393 close_many(fd_array
, n_fds
);
2399 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2400 log_warning("Received notify message without valid credentials. Ignoring.");
2404 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2405 log_warning("Received notify message exceeded maximum size. Ignoring.");
2409 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2410 * trailing NUL byte in the message, but don't expect it. */
2411 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2412 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2416 /* Make sure it's NUL-terminated. */
2419 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2422 /* Notify every unit that might be interested, which might be multiple. */
2423 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2424 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2425 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2432 array_copy
= newdup(Unit
*, array
, k
+1);
2436 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2437 * make sure we only invoke each unit's handler once. */
2439 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2443 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2447 for (size_t i
= 0; array_copy
[i
]; i
++) {
2448 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2453 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2455 if (fdset_size(fds
) > 0)
2456 log_warning("Got extra auxiliary fds with notification message, closing them.");
2461 static void manager_invoke_sigchld_event(
2464 const siginfo_t
*si
) {
2470 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2471 if (u
->sigchldgen
== m
->sigchldgen
)
2473 u
->sigchldgen
= m
->sigchldgen
;
2475 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2476 unit_unwatch_pid(u
, si
->si_pid
);
2478 if (UNIT_VTABLE(u
)->sigchld_event
)
2479 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2482 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2483 Manager
*m
= userdata
;
2490 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2491 * while it is a zombie. */
2493 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2495 if (errno
!= ECHILD
)
2496 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2504 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2505 _cleanup_free_ Unit
**array_copy
= NULL
;
2506 _cleanup_free_
char *name
= NULL
;
2507 Unit
*u1
, *u2
, **array
;
2509 (void) get_process_comm(si
.si_pid
, &name
);
2511 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2512 si
.si_pid
, strna(name
),
2513 sigchld_code_to_string(si
.si_code
),
2515 strna(si
.si_code
== CLD_EXITED
2516 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2517 : signal_to_string(si
.si_status
)));
2519 /* Increase the generation counter used for filtering out duplicate unit invocations */
2522 /* And now figure out the unit this belongs to, it might be multiple... */
2523 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2524 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2525 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2529 /* Count how many entries the array has */
2533 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2534 array_copy
= newdup(Unit
*, array
, n
+1);
2539 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2540 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2541 * each iteration. */
2543 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2544 * We only do this for the cgroup the PID belonged to. */
2545 (void) unit_check_oom(u1
);
2547 manager_invoke_sigchld_event(m
, u1
, &si
);
2550 manager_invoke_sigchld_event(m
, u2
, &si
);
2552 for (size_t i
= 0; array_copy
[i
]; i
++)
2553 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2556 /* And now, we actually reap the zombie. */
2557 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2558 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2565 /* All children processed for now, turn off event source */
2567 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2569 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2574 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2575 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2578 log_debug("Activating special unit %s", name
);
2580 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2582 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2585 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2586 /* If the user presses C-A-D more than
2587 * 7 times within 2s, we reboot/shutdown immediately,
2588 * unless it was disabled in system.conf */
2590 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2591 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2593 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2594 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2597 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2598 Manager
*m
= userdata
;
2600 struct signalfd_siginfo sfsi
;
2604 assert(m
->signal_fd
== fd
);
2606 if (revents
!= EPOLLIN
) {
2607 log_warning("Got unexpected events from signal file descriptor.");
2611 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2612 if (n
!= sizeof(sfsi
)) {
2614 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2618 if (IN_SET(errno
, EINTR
, EAGAIN
))
2621 /* We return an error here, which will kill this handler,
2622 * to avoid a busy loop on read error. */
2623 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2626 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2627 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2628 ? LOG_DEBUG
: LOG_INFO
,
2631 switch (sfsi
.ssi_signo
) {
2634 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2636 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2641 if (MANAGER_IS_SYSTEM(m
)) {
2642 /* This is for compatibility with the original sysvinit */
2643 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2646 m
->objective
= MANAGER_REEXECUTE
;
2652 if (MANAGER_IS_SYSTEM(m
))
2653 manager_handle_ctrl_alt_del(m
);
2655 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2656 JOB_REPLACE_IRREVERSIBLY
);
2660 /* This is a nop on non-init */
2661 if (MANAGER_IS_SYSTEM(m
))
2662 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2667 /* This is a nop on non-init */
2668 if (MANAGER_IS_SYSTEM(m
))
2669 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2674 if (manager_dbus_is_running(m
, false)) {
2675 log_info("Trying to reconnect to bus...");
2677 (void) bus_init_api(m
);
2679 if (MANAGER_IS_SYSTEM(m
))
2680 (void) bus_init_system(m
);
2682 log_info("Starting D-Bus service...");
2683 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2689 _cleanup_free_
char *dump
= NULL
;
2691 r
= manager_get_dump_string(m
, &dump
);
2693 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2697 log_dump(LOG_INFO
, dump
);
2702 if (verify_run_space_and_log("Refusing to reload") < 0)
2705 m
->objective
= MANAGER_RELOAD
;
2710 /* Starting SIGRTMIN+0 */
2711 static const struct {
2714 } target_table
[] = {
2715 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2716 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2717 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2718 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2719 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2720 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2721 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2724 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2725 static const ManagerObjective objective_table
[] = {
2727 [1] = MANAGER_POWEROFF
,
2728 [2] = MANAGER_REBOOT
,
2729 [3] = MANAGER_KEXEC
,
2732 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2733 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2734 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2735 manager_start_target(m
, target_table
[idx
].target
,
2736 target_table
[idx
].mode
);
2740 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2741 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2742 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2746 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2749 manager_set_show_status(m
, SHOW_STATUS_YES
, "signal");
2753 manager_set_show_status(m
, SHOW_STATUS_NO
, "signal");
2757 manager_override_log_level(m
, LOG_DEBUG
);
2761 manager_restore_original_log_level(m
);
2765 if (MANAGER_IS_USER(m
)) {
2766 m
->objective
= MANAGER_EXIT
;
2770 /* This is a nop on init */
2774 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2775 manager_restore_original_log_target(m
);
2779 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2783 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2787 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2794 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2795 Manager
*m
= userdata
;
2800 assert(m
->time_change_fd
== fd
);
2802 log_struct(LOG_DEBUG
,
2803 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2804 LOG_MESSAGE("Time has been changed"));
2806 /* Restart the watch */
2807 (void) manager_setup_time_change(m
);
2809 HASHMAP_FOREACH(u
, m
->units
, i
)
2810 if (UNIT_VTABLE(u
)->time_change
)
2811 UNIT_VTABLE(u
)->time_change(u
);
2816 static int manager_dispatch_timezone_change(
2817 sd_event_source
*source
,
2818 const struct inotify_event
*e
,
2821 Manager
*m
= userdata
;
2828 log_debug("inotify event for /etc/localtime");
2830 changed
= manager_read_timezone_stat(m
);
2834 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2835 (void) manager_setup_timezone_change(m
);
2837 /* Read the new timezone */
2840 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2842 HASHMAP_FOREACH(u
, m
->units
, i
)
2843 if (UNIT_VTABLE(u
)->timezone_change
)
2844 UNIT_VTABLE(u
)->timezone_change(u
);
2849 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2850 Manager
*m
= userdata
;
2853 assert(m
->idle_pipe
[2] == fd
);
2855 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2856 * now turn off any further console output if there's at least one service that needs console access, so that
2857 * from now on our own output should not spill into that service's output anymore. After all, we support
2858 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2859 * exclusively without our interference. */
2860 m
->no_console_output
= m
->n_on_console
> 0;
2862 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2863 * by closing the pipes towards them, which is what they are waiting for. */
2864 manager_close_idle_pipe(m
);
2869 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2870 Manager
*m
= userdata
;
2877 manager_print_jobs_in_progress(m
);
2879 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2880 r
= sd_event_source_set_time(source
, next
);
2884 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2887 int manager_loop(Manager
*m
) {
2888 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2892 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2894 manager_check_finished(m
);
2896 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2897 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2899 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2901 while (m
->objective
== MANAGER_OK
) {
2904 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2907 if (!ratelimit_below(&rl
)) {
2908 /* Yay, something is going seriously wrong, pause a little */
2909 log_warning("Looping too fast. Throttling execution a little.");
2913 if (manager_dispatch_load_queue(m
) > 0)
2916 if (manager_dispatch_gc_job_queue(m
) > 0)
2919 if (manager_dispatch_gc_unit_queue(m
) > 0)
2922 if (manager_dispatch_cleanup_queue(m
) > 0)
2925 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2928 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2931 if (manager_dispatch_dbus_queue(m
) > 0)
2934 /* Sleep for half the watchdog time */
2935 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2936 wait_usec
= m
->runtime_watchdog
/ 2;
2940 wait_usec
= USEC_INFINITY
;
2942 r
= sd_event_run(m
->event
, wait_usec
);
2944 return log_error_errno(r
, "Failed to run event loop: %m");
2947 return m
->objective
;
2950 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2951 _cleanup_free_
char *n
= NULL
;
2952 sd_id128_t invocation_id
;
2960 r
= unit_name_from_dbus_path(s
, &n
);
2964 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2965 * as invocation ID. */
2966 r
= sd_id128_from_string(n
, &invocation_id
);
2968 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2974 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2975 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2976 SD_ID128_FORMAT_VAL(invocation_id
));
2979 /* If this didn't work, we check if this is a unit name */
2980 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2981 _cleanup_free_
char *nn
= NULL
;
2984 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2985 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2988 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2996 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
3006 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
3010 r
= safe_atou(p
, &id
);
3014 j
= manager_get_job(m
, id
);
3023 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3026 _cleanup_free_
char *p
= NULL
;
3030 if (!MANAGER_IS_SYSTEM(m
))
3033 audit_fd
= get_audit_fd();
3037 /* Don't generate audit events if the service was already
3038 * started and we're just deserializing */
3039 if (MANAGER_IS_RELOADING(m
))
3042 if (u
->type
!= UNIT_SERVICE
)
3045 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3047 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3051 msg
= strjoina("unit=", p
);
3052 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3054 /* We aren't allowed to send audit messages?
3055 * Then let's not retry again. */
3058 log_warning_errno(errno
, "Failed to send audit message: %m");
3064 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3065 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3066 _cleanup_free_
char *message
= NULL
;
3067 _cleanup_close_
int fd
= -1;
3070 /* Don't generate plymouth events if the service was already
3071 * started and we're just deserializing */
3072 if (MANAGER_IS_RELOADING(m
))
3075 if (!MANAGER_IS_SYSTEM(m
))
3078 if (detect_container() > 0)
3081 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3084 /* We set SOCK_NONBLOCK here so that we rather drop the
3085 * message then wait for plymouth */
3086 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3088 log_error_errno(errno
, "socket() failed: %m");
3092 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3093 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3094 log_error_errno(errno
, "connect() failed: %m");
3098 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3104 if (write(fd
, message
, n
+ 1) != n
+ 1)
3105 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3106 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3109 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3115 fd
= open_serialization_fd("systemd-state");
3119 f
= fdopen(fd
, "w+");
3129 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3134 /* The following timestamps only apply to the host system, hence only serialize them there */
3136 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3137 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3138 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3139 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3142 int manager_serialize(
3146 bool switching_root
) {
3158 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3160 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3161 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3162 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3163 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3164 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3165 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3166 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3168 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3169 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3171 t
= show_status_to_string(m
->show_status
);
3173 (void) serialize_item(f
, "show-status", t
);
3175 if (m
->log_level_overridden
)
3176 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3177 if (m
->log_target_overridden
)
3178 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3180 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3181 _cleanup_free_
char *joined
= NULL
;
3183 if (!manager_timestamp_shall_serialize(q
))
3186 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3190 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3193 if (!switching_root
)
3194 (void) serialize_strv(f
, "env", m
->client_environment
);
3196 if (m
->notify_fd
>= 0) {
3197 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3201 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3204 if (m
->cgroups_agent_fd
>= 0) {
3205 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3210 if (m
->user_lookup_fds
[0] >= 0) {
3213 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3215 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3217 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3219 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3221 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3224 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3226 r
= dynamic_user_serialize(m
, f
, fds
);
3230 manager_serialize_uid_refs(m
, f
);
3231 manager_serialize_gid_refs(m
, f
);
3233 r
= exec_runtime_serialize(m
, f
, fds
);
3237 (void) fputc('\n', f
);
3239 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3247 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3252 r
= fflush_and_check(f
);
3254 return log_error_errno(r
, "Failed to flush serialization: %m");
3256 r
= bus_fdset_add_all(m
, fds
);
3258 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3263 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3267 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3271 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3274 r
= unit_deserialize(u
, f
, fds
);
3278 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3284 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3285 const char *unit_name
;
3289 _cleanup_free_
char *line
= NULL
;
3291 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3293 return log_error_errno(r
, "Failed to read serialization line: %m");
3297 unit_name
= strstrip(line
);
3299 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3303 r
= unit_deserialize_skip(f
);
3312 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3318 log_debug("Deserializing state...");
3320 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3321 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3323 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3326 _cleanup_free_
char *line
= NULL
;
3327 const char *val
, *l
;
3329 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3331 return log_error_errno(r
, "Failed to read serialization line: %m");
3336 if (isempty(l
)) /* end marker */
3339 if ((val
= startswith(l
, "current-job-id="))) {
3342 if (safe_atou32(val
, &id
) < 0)
3343 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3345 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3347 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3350 if (safe_atou32(val
, &n
) < 0)
3351 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3353 m
->n_installed_jobs
+= n
;
3355 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3358 if (safe_atou32(val
, &n
) < 0)
3359 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3361 m
->n_failed_jobs
+= n
;
3363 } else if ((val
= startswith(l
, "taint-usr="))) {
3366 b
= parse_boolean(val
);
3368 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3370 m
->taint_usr
= m
->taint_usr
|| b
;
3372 } else if ((val
= startswith(l
, "ready-sent="))) {
3375 b
= parse_boolean(val
);
3377 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3379 m
->ready_sent
= m
->ready_sent
|| b
;
3381 } else if ((val
= startswith(l
, "taint-logged="))) {
3384 b
= parse_boolean(val
);
3386 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3388 m
->taint_logged
= m
->taint_logged
|| b
;
3390 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3393 b
= parse_boolean(val
);
3395 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3397 m
->service_watchdogs
= b
;
3399 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3402 b
= parse_boolean(val
);
3404 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3406 m
->honor_device_enumeration
= b
;
3408 } else if ((val
= startswith(l
, "show-status="))) {
3411 s
= show_status_from_string(val
);
3413 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3415 manager_set_show_status(m
, s
, "deserialization");
3417 } else if ((val
= startswith(l
, "log-level-override="))) {
3420 level
= log_level_from_string(val
);
3422 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3424 manager_override_log_level(m
, level
);
3426 } else if ((val
= startswith(l
, "log-target-override="))) {
3429 target
= log_target_from_string(val
);
3431 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3433 manager_override_log_target(m
, target
);
3435 } else if (startswith(l
, "env=")) {
3436 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3438 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3440 } else if ((val
= startswith(l
, "notify-fd="))) {
3443 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3444 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3446 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3447 safe_close(m
->notify_fd
);
3448 m
->notify_fd
= fdset_remove(fds
, fd
);
3451 } else if ((val
= startswith(l
, "notify-socket="))) {
3452 r
= free_and_strdup(&m
->notify_socket
, val
);
3456 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3459 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3460 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3462 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3463 safe_close(m
->cgroups_agent_fd
);
3464 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3467 } else if ((val
= startswith(l
, "user-lookup="))) {
3470 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3471 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3473 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3474 safe_close_pair(m
->user_lookup_fds
);
3475 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3476 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3479 } else if ((val
= startswith(l
, "dynamic-user=")))
3480 dynamic_user_deserialize_one(m
, val
, fds
);
3481 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3482 manager_deserialize_uid_refs_one(m
, val
);
3483 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3484 manager_deserialize_gid_refs_one(m
, val
);
3485 else if ((val
= startswith(l
, "exec-runtime=")))
3486 exec_runtime_deserialize_one(m
, val
, fds
);
3487 else if ((val
= startswith(l
, "subscribed="))) {
3489 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3495 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3496 val
= startswith(l
, manager_timestamp_to_string(q
));
3500 val
= startswith(val
, "-timestamp=");
3505 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3506 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3507 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3508 log_notice("Unknown serialization item '%s', ignoring.", l
);
3512 return manager_deserialize_units(m
, f
, fds
);
3515 int manager_reload(Manager
*m
) {
3516 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3517 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3518 _cleanup_fclose_
FILE *f
= NULL
;
3523 r
= manager_open_serialization(m
, &f
);
3525 return log_error_errno(r
, "Failed to create serialization file: %m");
3531 /* We are officially in reload mode from here on. */
3532 reloading
= manager_reloading_start(m
);
3534 r
= manager_serialize(m
, f
, fds
, false);
3538 if (fseeko(f
, 0, SEEK_SET
) < 0)
3539 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3541 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3544 bus_manager_send_reloading(m
, true);
3546 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3547 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3550 manager_clear_jobs_and_units(m
);
3551 lookup_paths_flush_generator(&m
->lookup_paths
);
3552 lookup_paths_free(&m
->lookup_paths
);
3553 exec_runtime_vacuum(m
);
3554 dynamic_user_vacuum(m
, false);
3555 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3556 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3558 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3560 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3562 (void) manager_run_environment_generators(m
);
3563 (void) manager_run_generators(m
);
3565 lookup_paths_log(&m
->lookup_paths
);
3567 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3568 manager_free_unit_name_maps(m
);
3570 /* First, enumerate what we can from kernel and suchlike */
3571 manager_enumerate_perpetual(m
);
3572 manager_enumerate(m
);
3574 /* Second, deserialize our stored data */
3575 r
= manager_deserialize(m
, f
, fds
);
3577 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3579 /* We don't need the serialization anymore */
3582 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3583 (void) manager_setup_notify(m
);
3584 (void) manager_setup_cgroups_agent(m
);
3585 (void) manager_setup_user_lookup_fd(m
);
3587 /* Third, fire things up! */
3588 manager_coldplug(m
);
3590 /* Clean up runtime objects no longer referenced */
3593 /* Consider the reload process complete now. */
3594 assert(m
->n_reloading
> 0);
3597 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3598 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3599 * let's always set the flag here for safety. */
3600 m
->honor_device_enumeration
= true;
3604 m
->send_reloading_done
= true;
3608 void manager_reset_failed(Manager
*m
) {
3614 HASHMAP_FOREACH(u
, m
->units
, i
)
3615 unit_reset_failed(u
);
3618 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3624 /* Returns true if the unit is inactive or going down */
3625 u
= manager_get_unit(m
, name
);
3629 return unit_inactive_or_pending(u
);
3632 static void log_taint_string(Manager
*m
) {
3633 _cleanup_free_
char *taint
= NULL
;
3637 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3640 m
->taint_logged
= true; /* only check for taint once */
3642 taint
= manager_taint_string(m
);
3646 log_struct(LOG_NOTICE
,
3647 LOG_MESSAGE("System is tainted: %s", taint
),
3649 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3652 static void manager_notify_finished(Manager
*m
) {
3653 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3654 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3656 if (MANAGER_IS_TEST_RUN(m
))
3659 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3660 char ts
[FORMAT_TIMESPAN_MAX
];
3661 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3664 size_t size
= sizeof buf
;
3666 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3667 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3668 * negative values. */
3670 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3671 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3672 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3673 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3675 if (firmware_usec
> 0)
3676 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3677 if (loader_usec
> 0)
3678 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3680 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3682 /* The initrd case on bare-metal*/
3683 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3684 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3686 log_struct(LOG_INFO
,
3687 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3688 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3689 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3690 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3691 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3693 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3694 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3695 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3696 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3698 /* The initrd-less case on bare-metal*/
3700 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3703 log_struct(LOG_INFO
,
3704 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3705 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3706 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3707 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3709 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3710 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3711 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3714 /* The container and --user case */
3715 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3716 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3718 log_struct(LOG_INFO
,
3719 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3720 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3721 LOG_MESSAGE("Startup finished in %s.",
3722 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3725 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3728 m
->ready_sent
? "STATUS=Startup finished in %s."
3730 "STATUS=Startup finished in %s.",
3731 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3732 m
->ready_sent
= true;
3734 log_taint_string(m
);
3737 static void manager_send_ready(Manager
*m
) {
3740 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3741 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3744 m
->ready_sent
= true;
3748 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3751 static void manager_check_basic_target(Manager
*m
) {
3756 /* Small shortcut */
3757 if (m
->ready_sent
&& m
->taint_logged
)
3760 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3761 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3764 /* For user managers, send out READY=1 as soon as we reach basic.target */
3765 manager_send_ready(m
);
3767 /* Log the taint string as soon as we reach basic.target */
3768 log_taint_string(m
);
3771 void manager_check_finished(Manager
*m
) {
3774 if (MANAGER_IS_RELOADING(m
))
3777 /* Verify that we have entered the event loop already, and not left it again. */
3778 if (!MANAGER_IS_RUNNING(m
))
3781 manager_check_basic_target(m
);
3783 if (hashmap_size(m
->jobs
) > 0) {
3784 if (m
->jobs_in_progress_event_source
)
3785 /* Ignore any failure, this is only for feedback */
3786 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
3787 manager_watch_jobs_next_time(m
));
3791 manager_flip_auto_status(m
, false, "boot finished");
3793 /* Notify Type=idle units that we are done now */
3794 manager_close_idle_pipe(m
);
3796 /* Turn off confirm spawn now */
3797 m
->confirm_spawn
= NULL
;
3799 /* No need to update ask password status when we're going non-interactive */
3800 manager_close_ask_password(m
);
3802 /* This is no longer the first boot */
3803 manager_set_first_boot(m
, false);
3805 if (MANAGER_IS_FINISHED(m
))
3808 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3810 manager_notify_finished(m
);
3812 manager_invalidate_startup_units(m
);
3815 static bool generator_path_any(const char* const* paths
) {
3819 /* Optimize by skipping the whole process by not creating output directories
3820 * if no generators are found. */
3821 STRV_FOREACH(path
, (char**) paths
)
3822 if (access(*path
, F_OK
) == 0)
3824 else if (errno
!= ENOENT
)
3825 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3830 static int manager_run_environment_generators(Manager
*m
) {
3831 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3832 _cleanup_strv_free_
char **paths
= NULL
;
3834 [STDOUT_GENERATE
] = &tmp
,
3835 [STDOUT_COLLECT
] = &tmp
,
3836 [STDOUT_CONSUME
] = &m
->transient_environment
,
3840 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3843 paths
= env_generator_binary_paths(MANAGER_IS_SYSTEM(m
));
3847 if (!generator_path_any((const char* const*) paths
))
3850 RUN_WITH_UMASK(0022)
3851 r
= execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3852 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3856 static int manager_run_generators(Manager
*m
) {
3857 _cleanup_strv_free_
char **paths
= NULL
;
3858 const char *argv
[5];
3863 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3866 paths
= generator_binary_paths(m
->unit_file_scope
);
3870 if (!generator_path_any((const char* const*) paths
))
3873 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3875 log_error_errno(r
, "Failed to create generator directories: %m");
3879 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3880 argv
[1] = m
->lookup_paths
.generator
;
3881 argv
[2] = m
->lookup_paths
.generator_early
;
3882 argv
[3] = m
->lookup_paths
.generator_late
;
3885 RUN_WITH_UMASK(0022)
3886 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3887 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3892 lookup_paths_trim_generator(&m
->lookup_paths
);
3896 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3901 if (strv_isempty(plus
))
3904 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3908 sanitize_environment(a
);
3910 return strv_free_and_replace(m
->transient_environment
, a
);
3913 int manager_client_environment_modify(
3918 char **a
= NULL
, **b
= NULL
, **l
;
3922 if (strv_isempty(minus
) && strv_isempty(plus
))
3925 l
= m
->client_environment
;
3927 if (!strv_isempty(minus
)) {
3928 a
= strv_env_delete(l
, 1, minus
);
3935 if (!strv_isempty(plus
)) {
3936 b
= strv_env_merge(2, l
, plus
);
3945 if (m
->client_environment
!= l
)
3946 strv_free(m
->client_environment
);
3953 m
->client_environment
= sanitize_environment(l
);
3957 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3963 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3971 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3976 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3977 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3979 if (!default_rlimit
[i
])
3982 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3990 void manager_recheck_dbus(Manager
*m
) {
3993 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3994 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3995 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3996 * while in the user instance we can assume it's already there. */
3998 if (MANAGER_IS_RELOADING(m
))
3999 return; /* don't check while we are reloading… */
4001 if (manager_dbus_is_running(m
, false)) {
4002 (void) bus_init_api(m
);
4004 if (MANAGER_IS_SYSTEM(m
))
4005 (void) bus_init_system(m
);
4007 (void) bus_done_api(m
);
4009 if (MANAGER_IS_SYSTEM(m
))
4010 (void) bus_done_system(m
);
4014 static bool manager_journal_is_running(Manager
*m
) {
4019 if (MANAGER_IS_TEST_RUN(m
))
4022 /* If we are the user manager we can safely assume that the journal is up */
4023 if (!MANAGER_IS_SYSTEM(m
))
4026 /* Check that the socket is not only up, but in RUNNING state */
4027 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4030 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4033 /* Similar, check if the daemon itself is fully up, too */
4034 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4037 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4043 void disable_printk_ratelimit(void) {
4044 /* Disable kernel's printk ratelimit.
4046 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4047 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4048 * setting takes precedence. */
4051 r
= sysctl_write("kernel/printk_devkmsg", "on");
4053 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4056 void manager_recheck_journal(Manager
*m
) {
4060 /* Don't bother with this unless we are in the special situation of being PID 1 */
4061 if (getpid_cached() != 1)
4064 /* Don't check this while we are reloading, things might still change */
4065 if (MANAGER_IS_RELOADING(m
))
4068 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4069 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4070 * an activation ourselves we can't fulfill. */
4071 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4075 void manager_set_show_status(Manager
*m
, ShowStatus mode
, const char *reason
) {
4077 assert(mode
>= 0 && mode
< _SHOW_STATUS_MAX
);
4079 if (!MANAGER_IS_SYSTEM(m
))
4082 if (mode
== m
->show_status
)
4085 bool enabled
= IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4086 log_debug("%s (%s) showing of status (%s).",
4087 enabled
? "Enabling" : "Disabling",
4088 strna(show_status_to_string(mode
)),
4090 m
->show_status
= mode
;
4093 (void) touch("/run/systemd/show-status");
4095 (void) unlink("/run/systemd/show-status");
4098 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4101 if (!MANAGER_IS_SYSTEM(m
))
4104 if (m
->no_console_output
)
4107 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4110 /* If we cannot find out the status properly, just proceed. */
4111 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4114 if (type
== STATUS_TYPE_NOTICE
&& m
->show_status
!= SHOW_STATUS_NO
)
4117 return show_status_on(m
->show_status
);
4120 const char *manager_get_confirm_spawn(Manager
*m
) {
4121 static int last_errno
= 0;
4127 /* Here's the deal: we want to test the validity of the console but don't want
4128 * PID1 to go through the whole console process which might block. But we also
4129 * want to warn the user only once if something is wrong with the console so we
4130 * cannot do the sanity checks after spawning our children. So here we simply do
4131 * really basic tests to hopefully trap common errors.
4133 * If the console suddenly disappear at the time our children will really it
4134 * then they will simply fail to acquire it and a positive answer will be
4135 * assumed. New children will fallback to /dev/console though.
4137 * Note: TTYs are devices that can come and go any time, and frequently aren't
4138 * available yet during early boot (consider a USB rs232 dongle...). If for any
4139 * reason the configured console is not ready, we fallback to the default
4142 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4143 return m
->confirm_spawn
;
4145 if (stat(m
->confirm_spawn
, &st
) < 0) {
4150 if (!S_ISCHR(st
.st_mode
)) {
4156 return m
->confirm_spawn
;
4159 if (last_errno
!= r
)
4160 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4162 return "/dev/console";
4165 void manager_set_first_boot(Manager
*m
, bool b
) {
4168 if (!MANAGER_IS_SYSTEM(m
))
4171 if (m
->first_boot
!= (int) b
) {
4173 (void) touch("/run/systemd/first-boot");
4175 (void) unlink("/run/systemd/first-boot");
4181 void manager_disable_confirm_spawn(void) {
4182 (void) touch("/run/systemd/confirm_spawn_disabled");
4185 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4186 if (!m
->confirm_spawn
)
4189 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4192 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4195 /* If m is NULL, assume we're after shutdown and let the messages through. */
4197 if (m
&& !manager_get_show_status(m
, type
))
4200 /* XXX We should totally drop the check for ephemeral here
4201 * and thus effectively make 'Type=idle' pointless. */
4202 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4205 va_start(ap
, format
);
4206 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4210 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4211 char p
[strlen(path
)+1];
4217 path_simplify(p
, false);
4219 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4222 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4227 assert(u
->manager
== m
);
4229 size
= set_size(m
->failed_units
);
4232 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4236 if (set_put(m
->failed_units
, u
) < 0)
4239 (void) set_remove(m
->failed_units
, u
);
4241 if (set_size(m
->failed_units
) != size
)
4242 bus_manager_send_change_signal(m
);
4247 ManagerState
manager_state(Manager
*m
) {
4252 /* Did we ever finish booting? If not then we are still starting up */
4253 if (!MANAGER_IS_FINISHED(m
)) {
4255 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4256 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4257 return MANAGER_INITIALIZING
;
4259 return MANAGER_STARTING
;
4262 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4263 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4264 if (u
&& unit_active_or_pending(u
))
4265 return MANAGER_STOPPING
;
4267 if (MANAGER_IS_SYSTEM(m
)) {
4268 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4269 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4270 if (u
&& unit_active_or_pending(u
))
4271 return MANAGER_MAINTENANCE
;
4273 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4274 if (u
&& unit_active_or_pending(u
))
4275 return MANAGER_MAINTENANCE
;
4278 /* Are there any failed units? If so, we are in degraded mode */
4279 if (set_size(m
->failed_units
) > 0)
4280 return MANAGER_DEGRADED
;
4282 return MANAGER_RUNNING
;
4285 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4287 static void manager_unref_uid_internal(
4292 int (*_clean_ipc
)(uid_t uid
)) {
4298 assert(uid_is_valid(uid
));
4301 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4302 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4304 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4305 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4306 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4307 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4309 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4310 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4312 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4315 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4317 n
= c
& ~DESTROY_IPC_FLAG
;
4321 if (destroy_now
&& n
== 0) {
4322 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4324 if (c
& DESTROY_IPC_FLAG
) {
4325 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4326 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4328 (void) _clean_ipc(uid
);
4331 c
= n
| (c
& DESTROY_IPC_FLAG
);
4332 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4336 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4337 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4340 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4341 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4344 static int manager_ref_uid_internal(
4355 assert(uid_is_valid(uid
));
4357 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4358 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4360 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4361 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4363 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4366 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4370 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4372 n
= c
& ~DESTROY_IPC_FLAG
;
4375 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4378 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4380 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4383 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4384 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4387 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4388 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4391 static void manager_vacuum_uid_refs_internal(
4394 int (*_clean_ipc
)(uid_t uid
)) {
4403 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4407 uid
= PTR_TO_UID(k
);
4408 c
= PTR_TO_UINT32(p
);
4410 n
= c
& ~DESTROY_IPC_FLAG
;
4414 if (c
& DESTROY_IPC_FLAG
) {
4415 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4416 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4418 (void) _clean_ipc(uid
);
4421 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4425 void manager_vacuum_uid_refs(Manager
*m
) {
4426 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4429 void manager_vacuum_gid_refs(Manager
*m
) {
4430 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4433 static void manager_serialize_uid_refs_internal(
4437 const char *field_name
) {
4447 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4448 * of it is better rebuild after a reload/reexec. */
4450 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4454 uid
= PTR_TO_UID(k
);
4455 c
= PTR_TO_UINT32(p
);
4457 if (!(c
& DESTROY_IPC_FLAG
))
4460 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4464 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4465 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4468 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4469 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4472 static void manager_deserialize_uid_refs_one_internal(
4475 const char *value
) {
4485 r
= parse_uid(value
, &uid
);
4486 if (r
< 0 || uid
== 0) {
4487 log_debug("Unable to parse UID reference serialization: " UID_FMT
, uid
);
4491 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4497 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4498 if (c
& DESTROY_IPC_FLAG
)
4501 c
|= DESTROY_IPC_FLAG
;
4503 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4505 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4510 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4511 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4514 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4515 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4518 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4522 char unit_name
[UNIT_NAME_MAX
+1];
4525 Manager
*m
= userdata
;
4533 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4534 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4535 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4537 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4539 if (IN_SET(errno
, EINTR
, EAGAIN
))
4542 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4545 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4546 log_warning("Received too short user lookup message, ignoring.");
4550 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4551 log_warning("Received too long user lookup message, ignoring.");
4555 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4556 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4560 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4561 if (memchr(buffer
.unit_name
, 0, n
)) {
4562 log_warning("Received lookup message with embedded NUL character, ignoring.");
4566 buffer
.unit_name
[n
] = 0;
4567 u
= manager_get_unit(m
, buffer
.unit_name
);
4569 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4573 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4575 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4579 char *manager_taint_string(Manager
*m
) {
4580 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4584 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4585 * Only things that are detected at runtime should be tagged
4586 * here. For stuff that is set during compilation, emit a warning
4587 * in the configuration phase. */
4591 buf
= new(char, sizeof("split-usr:"
4595 "overflowuid-not-65534:"
4596 "overflowgid-not-65534:"));
4604 e
= stpcpy(e
, "split-usr:");
4606 if (access("/proc/cgroups", F_OK
) < 0)
4607 e
= stpcpy(e
, "cgroups-missing:");
4609 if (clock_is_localtime(NULL
) > 0)
4610 e
= stpcpy(e
, "local-hwclock:");
4612 r
= readlink_malloc("/var/run", &destination
);
4613 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4614 e
= stpcpy(e
, "var-run-bad:");
4616 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4617 if (r
>= 0 && !streq(overflowuid
, "65534"))
4618 e
= stpcpy(e
, "overflowuid-not-65534:");
4620 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4621 if (r
>= 0 && !streq(overflowgid
, "65534"))
4622 e
= stpcpy(e
, "overflowgid-not-65534:");
4624 /* remove the last ':' */
4631 void manager_ref_console(Manager
*m
) {
4637 void manager_unref_console(Manager
*m
) {
4639 assert(m
->n_on_console
> 0);
4642 if (m
->n_on_console
== 0)
4643 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4646 void manager_override_log_level(Manager
*m
, int level
) {
4647 _cleanup_free_
char *s
= NULL
;
4650 if (!m
->log_level_overridden
) {
4651 m
->original_log_level
= log_get_max_level();
4652 m
->log_level_overridden
= true;
4655 (void) log_level_to_string_alloc(level
, &s
);
4656 log_info("Setting log level to %s.", strna(s
));
4658 log_set_max_level(level
);
4661 void manager_restore_original_log_level(Manager
*m
) {
4662 _cleanup_free_
char *s
= NULL
;
4665 if (!m
->log_level_overridden
)
4668 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4669 log_info("Restoring log level to original (%s).", strna(s
));
4671 log_set_max_level(m
->original_log_level
);
4672 m
->log_level_overridden
= false;
4675 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4678 if (!m
->log_target_overridden
) {
4679 m
->original_log_target
= log_get_target();
4680 m
->log_target_overridden
= true;
4683 log_info("Setting log target to %s.", log_target_to_string(target
));
4684 log_set_target(target
);
4687 void manager_restore_original_log_target(Manager
*m
) {
4690 if (!m
->log_target_overridden
)
4693 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4695 log_set_target(m
->original_log_target
);
4696 m
->log_target_overridden
= false;
4699 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4701 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4702 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4703 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4707 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4708 [MANAGER_INITIALIZING
] = "initializing",
4709 [MANAGER_STARTING
] = "starting",
4710 [MANAGER_RUNNING
] = "running",
4711 [MANAGER_DEGRADED
] = "degraded",
4712 [MANAGER_MAINTENANCE
] = "maintenance",
4713 [MANAGER_STOPPING
] = "stopping",
4716 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4718 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4719 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4720 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4721 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4722 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4723 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4724 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4725 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4726 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4727 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4728 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4729 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4730 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4731 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4732 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4733 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4734 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4735 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4736 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4739 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4741 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4742 [OOM_CONTINUE
] = "continue",
4743 [OOM_STOP
] = "stop",
4744 [OOM_KILL
] = "kill",
4747 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);