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"
51 #include "locale-setup.h"
55 #include "memory-util.h"
57 #include "parse-util.h"
58 #include "path-lookup.h"
59 #include "path-util.h"
60 #include "process-util.h"
61 #include "ratelimit.h"
62 #include "rlimit-util.h"
64 #include "serialize.h"
65 #include "signal-util.h"
66 #include "socket-util.h"
68 #include "stat-util.h"
69 #include "string-table.h"
70 #include "string-util.h"
73 #include "sysctl-util.h"
74 #include "syslog-util.h"
75 #include "terminal-util.h"
76 #include "time-util.h"
77 #include "transaction.h"
78 #include "umask-util.h"
79 #include "unit-name.h"
80 #include "user-util.h"
84 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
85 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
87 /* Initial delay and the interval for printing status messages about running jobs */
88 #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC)
89 #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC)
90 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
91 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
93 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
94 * the queue gets more empty. */
95 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
97 /* How many units and jobs to process of the bus queue before returning to the event loop. */
98 #define MANAGER_BUS_MESSAGE_BUDGET 100U
100 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
101 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
106 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
107 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
108 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
109 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
110 static int manager_run_environment_generators(Manager
*m
);
111 static int manager_run_generators(Manager
*m
);
113 static usec_t
manager_watch_jobs_next_time(Manager
*m
) {
114 return usec_add(now(CLOCK_MONOTONIC
),
115 show_status_on(m
->show_status
) ? JOBS_IN_PROGRESS_WAIT_USEC
:
116 JOBS_IN_PROGRESS_QUIET_WAIT_USEC
);
119 static void manager_watch_jobs_in_progress(Manager
*m
) {
125 /* We do not want to show the cylon animation if the user
126 * needs to confirm service executions otherwise confirmation
127 * messages will be screwed by the cylon animation. */
128 if (!manager_is_confirm_spawn_disabled(m
))
131 if (m
->jobs_in_progress_event_source
)
134 next
= manager_watch_jobs_next_time(m
);
135 r
= sd_event_add_time(
137 &m
->jobs_in_progress_event_source
,
140 manager_dispatch_jobs_in_progress
, m
);
144 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
147 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
149 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
152 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
153 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
157 p
= mempset(p
, ' ', pos
-2);
158 if (log_get_show_color())
159 p
= stpcpy(p
, ANSI_RED
);
163 if (pos
> 0 && pos
<= width
) {
164 if (log_get_show_color())
165 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
169 if (log_get_show_color())
170 p
= stpcpy(p
, ANSI_NORMAL
);
173 if (log_get_show_color())
174 p
= stpcpy(p
, ANSI_RED
);
177 p
= mempset(p
, ' ', width
-1-pos
);
178 if (log_get_show_color())
179 strcpy(p
, ANSI_NORMAL
);
183 void manager_flip_auto_status(Manager
*m
, bool enable
, const char *reason
) {
187 if (m
->show_status
== SHOW_STATUS_AUTO
)
188 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
, reason
);
190 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
191 manager_set_show_status(m
, SHOW_STATUS_AUTO
, reason
);
195 static void manager_print_jobs_in_progress(Manager
*m
) {
196 _cleanup_free_
char *job_of_n
= NULL
;
199 unsigned counter
= 0, print_nr
;
200 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
202 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
206 assert(m
->n_running_jobs
> 0);
208 manager_flip_auto_status(m
, true, "delay");
210 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
212 HASHMAP_FOREACH(j
, m
->jobs
, i
)
213 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
216 /* m->n_running_jobs must be consistent with the contents of m->jobs,
217 * so the above loop must have succeeded in finding j. */
218 assert(counter
== print_nr
+ 1);
221 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
223 cylon_pos
= 14 - cylon_pos
;
224 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
226 m
->jobs_in_progress_iteration
++;
228 if (m
->n_running_jobs
> 1) {
229 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
233 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
234 if (job_get_timeout(j
, &x
) > 0)
235 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
237 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
238 "%sA %s job is running for %s (%s / %s)",
240 job_type_to_string(j
->type
),
241 unit_status_string(j
->unit
),
245 static int have_ask_password(void) {
246 _cleanup_closedir_
DIR *dir
;
249 dir
= opendir("/run/systemd/ask-password");
257 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
258 if (startswith(de
->d_name
, "ask."))
264 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
265 int fd
, uint32_t revents
, void *userdata
) {
266 Manager
*m
= userdata
;
272 m
->have_ask_password
= have_ask_password();
273 if (m
->have_ask_password
< 0)
274 /* Log error but continue. Negative have_ask_password
275 * is treated as unknown status. */
276 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
281 static void manager_close_ask_password(Manager
*m
) {
284 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
285 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
286 m
->have_ask_password
= -EINVAL
;
289 static int manager_check_ask_password(Manager
*m
) {
294 if (!m
->ask_password_event_source
) {
295 assert(m
->ask_password_inotify_fd
< 0);
297 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
299 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
300 if (m
->ask_password_inotify_fd
< 0)
301 return log_error_errno(errno
, "Failed to create inotify object: %m");
303 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
304 "/run/systemd/ask-password",
305 IN_CREATE
|IN_DELETE
|IN_MOVE
);
307 manager_close_ask_password(m
);
311 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
312 m
->ask_password_inotify_fd
, EPOLLIN
,
313 manager_dispatch_ask_password_fd
, m
);
315 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
316 manager_close_ask_password(m
);
320 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
322 /* Queries might have been added meanwhile... */
323 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
324 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
327 return m
->have_ask_password
;
330 static int manager_watch_idle_pipe(Manager
*m
) {
335 if (m
->idle_pipe_event_source
)
338 if (m
->idle_pipe
[2] < 0)
341 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
343 return log_error_errno(r
, "Failed to watch idle pipe: %m");
345 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
350 static void manager_close_idle_pipe(Manager
*m
) {
353 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
355 safe_close_pair(m
->idle_pipe
);
356 safe_close_pair(m
->idle_pipe
+ 2);
359 static int manager_setup_time_change(Manager
*m
) {
364 if (MANAGER_IS_TEST_RUN(m
))
367 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
368 m
->time_change_fd
= safe_close(m
->time_change_fd
);
370 m
->time_change_fd
= time_change_fd();
371 if (m
->time_change_fd
< 0)
372 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
374 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
376 return log_error_errno(r
, "Failed to create time change event source: %m");
378 /* Schedule this slightly earlier than the .timer event sources */
379 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
381 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
383 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
385 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
390 static int manager_read_timezone_stat(Manager
*m
) {
396 /* Read the current stat() data of /etc/localtime so that we detect changes */
397 if (lstat("/etc/localtime", &st
) < 0) {
398 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
399 changed
= m
->etc_localtime_accessible
;
400 m
->etc_localtime_accessible
= false;
404 k
= timespec_load(&st
.st_mtim
);
405 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
407 m
->etc_localtime_mtime
= k
;
408 m
->etc_localtime_accessible
= true;
414 static int manager_setup_timezone_change(Manager
*m
) {
415 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
420 if (MANAGER_IS_TEST_RUN(m
))
423 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
424 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
425 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
426 * went to zero and all fds to it are closed.
428 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
431 * Note that we create the new event source first here, before releasing the old one. This should optimize
432 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
434 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
435 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
437 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
438 * O_CREATE or by rename() */
440 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
441 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
442 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
445 return log_error_errno(r
, "Failed to create timezone change event source: %m");
447 /* Schedule this slightly earlier than the .timer event sources */
448 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
450 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
452 sd_event_source_unref(m
->timezone_change_event_source
);
453 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
458 static int enable_special_signals(Manager
*m
) {
459 _cleanup_close_
int fd
= -1;
463 if (MANAGER_IS_TEST_RUN(m
))
466 /* Enable that we get SIGINT on control-alt-del. In containers
467 * this will fail with EPERM (older) or EINVAL (newer), so
469 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
470 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
472 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
474 /* Support systems without virtual console */
476 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
478 /* Enable that we get SIGWINCH on kbrequest */
479 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
480 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
486 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
488 static int manager_setup_signals(Manager
*m
) {
489 struct sigaction sa
= {
490 .sa_handler
= SIG_DFL
,
491 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
498 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
500 /* We make liberal use of realtime signals here. On
501 * Linux/glibc we have 30 of them (with the exception of Linux
502 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
505 assert_se(sigemptyset(&mask
) == 0);
506 sigset_add_many(&mask
,
507 SIGCHLD
, /* Child died */
508 SIGTERM
, /* Reexecute daemon */
509 SIGHUP
, /* Reload configuration */
510 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
511 SIGUSR2
, /* systemd: dump status */
512 SIGINT
, /* Kernel sends us this on control-alt-del */
513 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
514 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
516 SIGRTMIN
+0, /* systemd: start default.target */
517 SIGRTMIN
+1, /* systemd: isolate rescue.target */
518 SIGRTMIN
+2, /* systemd: isolate emergency.target */
519 SIGRTMIN
+3, /* systemd: start halt.target */
520 SIGRTMIN
+4, /* systemd: start poweroff.target */
521 SIGRTMIN
+5, /* systemd: start reboot.target */
522 SIGRTMIN
+6, /* systemd: start kexec.target */
524 /* ... space for more special targets ... */
526 SIGRTMIN
+13, /* systemd: Immediate halt */
527 SIGRTMIN
+14, /* systemd: Immediate poweroff */
528 SIGRTMIN
+15, /* systemd: Immediate reboot */
529 SIGRTMIN
+16, /* systemd: Immediate kexec */
531 /* ... space for more immediate system state changes ... */
533 SIGRTMIN
+20, /* systemd: enable status messages */
534 SIGRTMIN
+21, /* systemd: disable status messages */
535 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
536 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
537 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
539 /* .. one free signal here ... */
541 /* Apparently Linux on hppa had fewer RT signals until v3.18,
542 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
543 * see commit v3.17-7614-g1f25df2eff.
545 * We cannot unconditionally make use of those signals here,
546 * so let's use a runtime check. Since these commands are
547 * accessible by different means and only really a safety
548 * net, the missing functionality on hppa shouldn't matter.
551 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
552 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
553 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
554 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
556 /* ... one free signal here SIGRTMIN+30 ... */
558 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
560 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
561 if (m
->signal_fd
< 0)
564 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
568 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
570 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
571 * notify processing can still figure out to which process/service a message belongs, before we reap the
572 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
573 * status information before detecting that there's no process in a cgroup. */
574 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
578 if (MANAGER_IS_SYSTEM(m
))
579 return enable_special_signals(m
);
584 static char** sanitize_environment(char **l
) {
586 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
607 /* Let's order the environment alphabetically, just to make it pretty */
613 int manager_default_environment(Manager
*m
) {
618 m
->transient_environment
= strv_free(m
->transient_environment
);
620 if (MANAGER_IS_SYSTEM(m
)) {
621 /* The system manager always starts with a clean
622 * environment for its children. It does not import
623 * the kernel's or the parents' exported variables.
625 * The initial passed environment is untouched to keep
626 * /proc/self/environ valid; it is used for tagging
627 * the init process inside containers. */
628 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
629 if (!m
->transient_environment
)
632 /* Import locale variables LC_*= from configuration */
633 (void) locale_setup(&m
->transient_environment
);
635 _cleanup_free_
char *k
= NULL
;
637 /* The user manager passes its own environment
638 * along to its children, except for $PATH. */
639 m
->transient_environment
= strv_copy(environ
);
640 if (!m
->transient_environment
)
643 k
= strdup("PATH=" DEFAULT_USER_PATH
);
647 r
= strv_env_replace(&m
->transient_environment
, k
);
653 sanitize_environment(m
->transient_environment
);
658 static int manager_setup_prefix(Manager
*m
) {
664 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
665 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
666 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
667 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
668 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
669 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
672 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
673 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
674 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
675 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
676 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
677 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
680 const struct table_entry
*p
;
686 if (MANAGER_IS_SYSTEM(m
))
691 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
692 r
= sd_path_home(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
700 static void manager_free_unit_name_maps(Manager
*m
) {
701 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
702 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
703 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
704 m
->unit_cache_mtime
= 0;
707 static int manager_setup_run_queue(Manager
*m
) {
711 assert(!m
->run_queue_event_source
);
713 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
717 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
721 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
725 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
730 static int manager_setup_sigchld_event_source(Manager
*m
) {
734 assert(!m
->sigchld_event_source
);
736 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
740 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
744 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
748 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
753 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
754 _cleanup_(manager_freep
) Manager
*m
= NULL
;
758 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
765 .unit_file_scope
= scope
,
766 .objective
= _MANAGER_OBJECTIVE_INVALID
,
768 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
770 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
771 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
772 .default_tasks_accounting
= true,
773 .default_tasks_max
= TASKS_MAX_UNSET
,
774 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
775 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
776 .default_restart_usec
= DEFAULT_RESTART_USEC
,
778 .original_log_level
= -1,
779 .original_log_target
= _LOG_TARGET_INVALID
,
782 .cgroups_agent_fd
= -1,
784 .time_change_fd
= -1,
785 .user_lookup_fds
= { -1, -1 },
786 .private_listen_fd
= -1,
788 .cgroup_inotify_fd
= -1,
789 .pin_cgroupfs_fd
= -1,
790 .ask_password_inotify_fd
= -1,
791 .idle_pipe
= { -1, -1, -1, -1},
793 /* start as id #1, so that we can leave #0 around as "null-like" value */
796 .have_ask_password
= -EINVAL
, /* we don't know */
798 .test_run_flags
= test_run_flags
,
800 .default_oom_policy
= OOM_STOP
,
804 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
805 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
806 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
807 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
810 /* Prepare log fields we can use for structured logging */
811 if (MANAGER_IS_SYSTEM(m
)) {
812 m
->unit_log_field
= "UNIT=";
813 m
->unit_log_format_string
= "UNIT=%s";
815 m
->invocation_log_field
= "INVOCATION_ID=";
816 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
818 m
->unit_log_field
= "USER_UNIT=";
819 m
->unit_log_format_string
= "USER_UNIT=%s";
821 m
->invocation_log_field
= "USER_INVOCATION_ID=";
822 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
825 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
826 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
828 r
= manager_default_environment(m
);
832 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
836 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
840 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
844 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
848 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
852 r
= manager_setup_prefix(m
);
856 r
= sd_event_default(&m
->event
);
860 r
= manager_setup_run_queue(m
);
864 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
865 m
->cgroup_root
= strdup("");
869 r
= manager_setup_signals(m
);
873 r
= manager_setup_cgroup(m
);
877 r
= manager_setup_time_change(m
);
881 r
= manager_read_timezone_stat(m
);
885 (void) manager_setup_timezone_change(m
);
887 r
= manager_setup_sigchld_event_source(m
);
892 if (test_run_flags
== 0) {
893 if (MANAGER_IS_SYSTEM(m
))
894 r
= mkdir_label("/run/systemd/units", 0755);
896 _cleanup_free_
char *units_path
= NULL
;
897 r
= xdg_user_runtime_dir(&units_path
, "/systemd/units");
900 r
= mkdir_p_label(units_path
, 0755);
903 if (r
< 0 && r
!= -EEXIST
)
909 dir_is_empty("/usr") > 0;
911 /* Note that we do not set up the notify fd here. We do that after deserialization,
912 * since they might have gotten serialized across the reexec. */
919 static int manager_setup_notify(Manager
*m
) {
922 if (MANAGER_IS_TEST_RUN(m
))
925 if (m
->notify_fd
< 0) {
926 _cleanup_close_
int fd
= -1;
927 union sockaddr_union sa
;
930 /* First free all secondary fields */
931 m
->notify_socket
= mfree(m
->notify_socket
);
932 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
934 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
936 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
938 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
940 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
941 if (!m
->notify_socket
)
944 r
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
946 return log_error_errno(r
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.",
950 (void) mkdir_parents_label(m
->notify_socket
, 0755);
951 (void) sockaddr_un_unlink(&sa
.un
);
953 r
= bind(fd
, &sa
.sa
, sa_len
);
955 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
957 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
959 return log_error_errno(r
, "SO_PASSCRED failed: %m");
961 m
->notify_fd
= TAKE_FD(fd
);
963 log_debug("Using notification socket %s", m
->notify_socket
);
966 if (!m
->notify_event_source
) {
967 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
969 return log_error_errno(r
, "Failed to allocate notify event source: %m");
971 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
972 * service an exit message belongs. */
973 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
975 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
977 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
983 static int manager_setup_cgroups_agent(Manager
*m
) {
985 static const union sockaddr_union sa
= {
986 .un
.sun_family
= AF_UNIX
,
987 .un
.sun_path
= "/run/systemd/cgroups-agent",
991 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
992 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
993 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
994 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
995 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
996 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
997 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
998 * we thus won't lose messages.
1000 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
1001 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
1002 * bus for these messages. */
1004 if (MANAGER_IS_TEST_RUN(m
))
1007 if (!MANAGER_IS_SYSTEM(m
))
1010 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
1012 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
1013 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
1016 if (m
->cgroups_agent_fd
< 0) {
1017 _cleanup_close_
int fd
= -1;
1019 /* First free all secondary fields */
1020 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1022 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1024 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1026 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1028 (void) sockaddr_un_unlink(&sa
.un
);
1030 /* Only allow root to connect to this socket */
1031 RUN_WITH_UMASK(0077)
1032 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1034 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1036 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1039 if (!m
->cgroups_agent_event_source
) {
1040 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1042 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1044 /* Process cgroups notifications early. Note that when the agent notification is received
1045 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1046 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1047 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1049 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1051 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1057 static int manager_setup_user_lookup_fd(Manager
*m
) {
1062 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1063 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1064 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1065 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1066 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1067 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1068 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1069 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1072 * You might wonder why we need a communication channel for this that is independent of the usual notification
1073 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1074 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1075 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1077 * Note that this function is called under two circumstances: when we first initialize (in which case we
1078 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1079 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1081 if (m
->user_lookup_fds
[0] < 0) {
1083 /* Free all secondary fields */
1084 safe_close_pair(m
->user_lookup_fds
);
1085 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1087 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1088 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1090 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1093 if (!m
->user_lookup_event_source
) {
1094 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1096 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1098 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1100 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1102 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1104 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1110 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1116 while ((u
= m
->cleanup_queue
)) {
1117 assert(u
->in_cleanup_queue
);
1127 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1128 GC_OFFSET_UNSURE
, /* No clue */
1129 GC_OFFSET_GOOD
, /* We still need this unit */
1130 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1134 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1139 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1141 /* Recursively mark referenced units as GOOD as well */
1142 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1143 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1144 unit_gc_mark_good(other
, gc_marker
);
1147 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1155 if (IN_SET(u
->gc_marker
- gc_marker
,
1156 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1159 if (u
->in_cleanup_queue
)
1162 if (!unit_may_gc(u
))
1165 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1169 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1170 unit_gc_sweep(other
, gc_marker
);
1172 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1175 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1179 if (u
->refs_by_target
) {
1182 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1183 unit_gc_sweep(ref
->source
, gc_marker
);
1185 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1188 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1196 /* We were unable to find anything out about this entry, so
1197 * let's investigate it later */
1198 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1199 unit_add_to_gc_queue(u
);
1203 /* We definitely know that this one is not useful anymore, so
1204 * let's mark it for deletion */
1205 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1206 unit_add_to_cleanup_queue(u
);
1210 unit_gc_mark_good(u
, gc_marker
);
1213 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1214 unsigned n
= 0, gc_marker
;
1219 /* log_debug("Running GC..."); */
1221 m
->gc_marker
+= _GC_OFFSET_MAX
;
1222 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1225 gc_marker
= m
->gc_marker
;
1227 while ((u
= m
->gc_unit_queue
)) {
1228 assert(u
->in_gc_queue
);
1230 unit_gc_sweep(u
, gc_marker
);
1232 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1233 u
->in_gc_queue
= false;
1237 if (IN_SET(u
->gc_marker
- gc_marker
,
1238 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1240 log_unit_debug(u
, "Collecting.");
1241 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1242 unit_add_to_cleanup_queue(u
);
1249 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1255 while ((j
= m
->gc_job_queue
)) {
1256 assert(j
->in_gc_queue
);
1258 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1259 j
->in_gc_queue
= false;
1266 log_unit_debug(j
->unit
, "Collecting job.");
1267 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1273 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1280 while ((u
= m
->stop_when_unneeded_queue
)) {
1281 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1282 assert(m
->stop_when_unneeded_queue
);
1284 assert(u
->in_stop_when_unneeded_queue
);
1285 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1286 u
->in_stop_when_unneeded_queue
= false;
1290 if (!unit_is_unneeded(u
))
1293 log_unit_debug(u
, "Unit is not needed anymore.");
1295 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1296 * service being unnecessary after a while. */
1298 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1299 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1303 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1304 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1306 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1312 static void manager_clear_jobs_and_units(Manager
*m
) {
1317 while ((u
= hashmap_first(m
->units
)))
1320 manager_dispatch_cleanup_queue(m
);
1322 assert(!m
->load_queue
);
1323 assert(prioq_isempty(m
->run_queue
));
1324 assert(!m
->dbus_unit_queue
);
1325 assert(!m
->dbus_job_queue
);
1326 assert(!m
->cleanup_queue
);
1327 assert(!m
->gc_unit_queue
);
1328 assert(!m
->gc_job_queue
);
1329 assert(!m
->stop_when_unneeded_queue
);
1331 assert(hashmap_isempty(m
->jobs
));
1332 assert(hashmap_isempty(m
->units
));
1334 m
->n_on_console
= 0;
1335 m
->n_running_jobs
= 0;
1336 m
->n_installed_jobs
= 0;
1337 m
->n_failed_jobs
= 0;
1340 Manager
* manager_free(Manager
*m
) {
1341 ExecDirectoryType dt
;
1347 manager_clear_jobs_and_units(m
);
1349 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1350 if (unit_vtable
[c
]->shutdown
)
1351 unit_vtable
[c
]->shutdown(m
);
1353 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1354 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1356 lookup_paths_flush_generator(&m
->lookup_paths
);
1359 manager_varlink_done(m
);
1361 exec_runtime_vacuum(m
);
1362 hashmap_free(m
->exec_runtime_by_id
);
1364 dynamic_user_vacuum(m
, false);
1365 hashmap_free(m
->dynamic_users
);
1367 hashmap_free(m
->units
);
1368 hashmap_free(m
->units_by_invocation_id
);
1369 hashmap_free(m
->jobs
);
1370 hashmap_free(m
->watch_pids
);
1371 hashmap_free(m
->watch_bus
);
1373 prioq_free(m
->run_queue
);
1375 set_free(m
->startup_units
);
1376 set_free(m
->failed_units
);
1378 sd_event_source_unref(m
->signal_event_source
);
1379 sd_event_source_unref(m
->sigchld_event_source
);
1380 sd_event_source_unref(m
->notify_event_source
);
1381 sd_event_source_unref(m
->cgroups_agent_event_source
);
1382 sd_event_source_unref(m
->time_change_event_source
);
1383 sd_event_source_unref(m
->timezone_change_event_source
);
1384 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1385 sd_event_source_unref(m
->run_queue_event_source
);
1386 sd_event_source_unref(m
->user_lookup_event_source
);
1388 safe_close(m
->signal_fd
);
1389 safe_close(m
->notify_fd
);
1390 safe_close(m
->cgroups_agent_fd
);
1391 safe_close(m
->time_change_fd
);
1392 safe_close_pair(m
->user_lookup_fds
);
1394 manager_close_ask_password(m
);
1396 manager_close_idle_pipe(m
);
1398 sd_event_unref(m
->event
);
1400 free(m
->notify_socket
);
1402 lookup_paths_free(&m
->lookup_paths
);
1403 strv_free(m
->transient_environment
);
1404 strv_free(m
->client_environment
);
1406 hashmap_free(m
->cgroup_unit
);
1407 manager_free_unit_name_maps(m
);
1409 free(m
->switch_root
);
1410 free(m
->switch_root_init
);
1412 rlimit_free_all(m
->rlimit
);
1414 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1415 hashmap_free(m
->units_requiring_mounts_for
);
1417 hashmap_free(m
->uid_refs
);
1418 hashmap_free(m
->gid_refs
);
1420 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1421 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1426 static void manager_enumerate_perpetual(Manager
*m
) {
1431 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1434 /* Let's ask every type to load all units from disk/kernel that it might know */
1435 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1436 if (!unit_type_supported(c
)) {
1437 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1441 if (unit_vtable
[c
]->enumerate_perpetual
)
1442 unit_vtable
[c
]->enumerate_perpetual(m
);
1446 static void manager_enumerate(Manager
*m
) {
1451 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1454 /* Let's ask every type to load all units from disk/kernel that it might know */
1455 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1456 if (!unit_type_supported(c
)) {
1457 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1461 if (unit_vtable
[c
]->enumerate
)
1462 unit_vtable
[c
]->enumerate(m
);
1465 manager_dispatch_load_queue(m
);
1468 static void manager_coldplug(Manager
*m
) {
1476 log_debug("Invoking unit coldplug() handlers…");
1478 /* Let's place the units back into their deserialized state */
1479 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1481 /* ignore aliases */
1485 r
= unit_coldplug(u
);
1487 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1491 static void manager_catchup(Manager
*m
) {
1498 log_debug("Invoking unit catchup() handlers…");
1500 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1501 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1503 /* ignore aliases */
1511 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1517 HASHMAP_FOREACH(u
, m
->units
, i
) {
1519 if (fdset_size(fds
) <= 0)
1522 if (!UNIT_VTABLE(u
)->distribute_fds
)
1525 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1529 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1534 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1535 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1536 * rather than the current one. */
1538 if (MANAGER_IS_TEST_RUN(m
))
1541 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1544 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1547 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1550 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1556 static void manager_setup_bus(Manager
*m
) {
1559 /* Let's set up our private bus connection now, unconditionally */
1560 (void) bus_init_private(m
);
1562 /* If we are in --user mode also connect to the system bus now */
1563 if (MANAGER_IS_USER(m
))
1564 (void) bus_init_system(m
);
1566 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1567 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1568 (void) bus_init_api(m
);
1570 if (MANAGER_IS_SYSTEM(m
))
1571 (void) bus_init_system(m
);
1575 static void manager_preset_all(Manager
*m
) {
1580 if (m
->first_boot
<= 0)
1583 if (!MANAGER_IS_SYSTEM(m
))
1586 if (MANAGER_IS_TEST_RUN(m
))
1589 /* If this is the first boot, and we are in the host system, then preset everything */
1590 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1592 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1593 "Failed to populate /etc with preset unit settings, ignoring: %m");
1595 log_info("Populated /etc with preset unit settings.");
1598 static void manager_vacuum(Manager
*m
) {
1601 /* Release any dynamic users no longer referenced */
1602 dynamic_user_vacuum(m
, true);
1604 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1605 manager_vacuum_uid_refs(m
);
1606 manager_vacuum_gid_refs(m
);
1608 /* Release any runtimes no longer referenced */
1609 exec_runtime_vacuum(m
);
1612 static void manager_ready(Manager
*m
) {
1615 /* After having loaded everything, do the final round of catching up with what might have changed */
1617 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1619 /* It might be safe to log to the journal now and connect to dbus */
1620 manager_recheck_journal(m
);
1621 manager_recheck_dbus(m
);
1623 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1626 m
->honor_device_enumeration
= true;
1629 static Manager
* manager_reloading_start(Manager
*m
) {
1633 static void manager_reloading_stopp(Manager
**m
) {
1635 assert((*m
)->n_reloading
> 0);
1636 (*m
)->n_reloading
--;
1640 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1645 /* If we are running in test mode, we still want to run the generators,
1646 * but we should not touch the real generator directories. */
1647 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1648 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1651 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1653 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1654 r
= manager_run_environment_generators(m
);
1656 r
= manager_run_generators(m
);
1657 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1661 manager_preset_all(m
);
1663 lookup_paths_log(&m
->lookup_paths
);
1666 /* This block is (optionally) done with the reloading counter bumped */
1667 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1669 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1670 * counter here already */
1672 reloading
= manager_reloading_start(m
);
1674 /* First, enumerate what we can from all config files */
1675 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1676 manager_enumerate_perpetual(m
);
1677 manager_enumerate(m
);
1678 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1680 /* Second, deserialize if there is something to deserialize */
1681 if (serialization
) {
1682 r
= manager_deserialize(m
, serialization
, fds
);
1684 return log_error_errno(r
, "Deserialization failed: %m");
1687 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1688 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1690 manager_distribute_fds(m
, fds
);
1692 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1693 r
= manager_setup_notify(m
);
1695 /* No sense to continue without notifications, our children would fail anyway. */
1698 r
= manager_setup_cgroups_agent(m
);
1700 /* Likewise, no sense to continue without empty cgroup notifications. */
1703 r
= manager_setup_user_lookup_fd(m
);
1705 /* This shouldn't fail, except if things are really broken. */
1708 /* Connect to the bus if we are good for it */
1709 manager_setup_bus(m
);
1711 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1712 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1714 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1715 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1717 r
= manager_varlink_init(m
);
1719 log_warning_errno(r
, "Failed to set up Varlink server, ignoring: %m");
1721 /* Third, fire things up! */
1722 manager_coldplug(m
);
1724 /* Clean up runtime objects */
1728 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1729 * reload is finished */
1730 m
->send_reloading_done
= true;
1738 int manager_add_job(
1744 sd_bus_error
*error
,
1751 assert(type
< _JOB_TYPE_MAX
);
1753 assert(mode
< _JOB_MODE_MAX
);
1755 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1756 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1758 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1759 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1761 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1762 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1764 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1766 type
= job_type_collapse(type
, unit
);
1768 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1772 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1773 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1774 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1778 if (mode
== JOB_ISOLATE
) {
1779 r
= transaction_add_isolate_jobs(tr
, m
);
1784 if (mode
== JOB_TRIGGERING
) {
1785 r
= transaction_add_triggering_jobs(tr
, unit
);
1790 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1794 log_unit_debug(unit
,
1795 "Enqueued job %s/%s as %u", unit
->id
,
1796 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1799 *ret
= tr
->anchor_job
;
1801 transaction_free(tr
);
1805 transaction_abort(tr
);
1806 transaction_free(tr
);
1810 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1811 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1815 assert(type
< _JOB_TYPE_MAX
);
1817 assert(mode
< _JOB_MODE_MAX
);
1819 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1824 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1827 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1828 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1832 assert(type
< _JOB_TYPE_MAX
);
1834 assert(mode
< _JOB_MODE_MAX
);
1836 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1838 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1843 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1849 assert(mode
< _JOB_MODE_MAX
);
1850 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1852 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1856 /* We need an anchor job */
1857 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1861 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1862 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1864 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1868 transaction_free(tr
);
1872 transaction_abort(tr
);
1873 transaction_free(tr
);
1877 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1880 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1883 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1887 return hashmap_get(m
->units
, name
);
1890 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1895 static const UnitDependency deps
[] = {
1904 while ((u
= m
->target_deps_queue
)) {
1905 assert(u
->in_target_deps_queue
);
1907 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1908 u
->in_target_deps_queue
= false;
1910 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1915 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1916 r
= unit_add_default_target_dependency(u
, target
);
1926 unsigned manager_dispatch_load_queue(Manager
*m
) {
1932 /* Make sure we are not run recursively */
1933 if (m
->dispatching_load_queue
)
1936 m
->dispatching_load_queue
= true;
1938 /* Dispatches the load queue. Takes a unit from the queue and
1939 * tries to load its data until the queue is empty */
1941 while ((u
= m
->load_queue
)) {
1942 assert(u
->in_load_queue
);
1948 m
->dispatching_load_queue
= false;
1950 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1951 * should be loaded and have aliases resolved */
1952 (void) manager_dispatch_target_deps_queue(m
);
1957 int manager_load_unit_prepare(
1964 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1970 assert(name
|| path
);
1973 /* This will prepare the unit for loading, but not actually
1974 * load anything from disk. */
1976 if (path
&& !is_path(path
))
1977 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1980 name
= basename(path
);
1982 t
= unit_name_to_type(name
);
1984 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1985 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1986 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1988 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1991 ret
= manager_get_unit(m
, name
);
1997 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
2002 ret
->fragment_path
= strdup(path
);
2003 if (!ret
->fragment_path
)
2007 r
= unit_add_name(ret
, name
);
2011 unit_add_to_load_queue(ret
);
2012 unit_add_to_dbus_queue(ret
);
2013 unit_add_to_gc_queue(ret
);
2021 int manager_load_unit(
2033 /* This will load the service information files, but not actually
2034 * start any services or anything. */
2036 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2040 manager_dispatch_load_queue(m
);
2042 *_ret
= unit_follow_merge(*_ret
);
2046 int manager_load_startable_unit_or_warn(
2052 /* Load a unit, make sure it loaded fully and is not masked. */
2054 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2058 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2060 return log_error_errno(r
, "Failed to load %s %s: %s",
2061 name
? "unit" : "unit file", name
?: path
,
2062 bus_error_message(&error
, r
));
2064 r
= bus_unit_validate_load_state(unit
, &error
);
2066 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2072 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2079 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2080 job_dump(j
, f
, prefix
);
2083 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2091 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2093 unit_dump(u
, f
, prefix
);
2096 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2102 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2103 const dual_timestamp
*t
= m
->timestamps
+ q
;
2104 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2106 if (dual_timestamp_is_set(t
))
2107 fprintf(f
, "%sTimestamp %s: %s\n",
2109 manager_timestamp_to_string(q
),
2110 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2111 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2114 manager_dump_units(m
, f
, prefix
);
2115 manager_dump_jobs(m
, f
, prefix
);
2118 int manager_get_dump_string(Manager
*m
, char **ret
) {
2119 _cleanup_free_
char *dump
= NULL
;
2120 _cleanup_fclose_
FILE *f
= NULL
;
2127 f
= open_memstream_unlocked(&dump
, &size
);
2131 manager_dump(m
, f
, NULL
);
2133 r
= fflush_and_check(f
);
2139 *ret
= TAKE_PTR(dump
);
2144 void manager_clear_jobs(Manager
*m
) {
2149 while ((j
= hashmap_first(m
->jobs
)))
2150 /* No need to recurse. We're cancelling all jobs. */
2151 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2154 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2157 /* First let's drop the unit keyed as "pid". */
2158 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2160 /* Then, let's also drop the array keyed by -pid. */
2161 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2164 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2165 Manager
*m
= userdata
;
2171 while ((j
= prioq_peek(m
->run_queue
))) {
2172 assert(j
->installed
);
2173 assert(j
->in_run_queue
);
2175 (void) job_run_and_invalidate(j
);
2178 if (m
->n_running_jobs
> 0)
2179 manager_watch_jobs_in_progress(m
);
2181 if (m
->n_on_console
> 0)
2182 manager_watch_idle_pipe(m
);
2187 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2188 unsigned n
= 0, budget
;
2194 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2195 * as we can. There's no point in throttling generation of signals in that case. */
2196 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2197 budget
= (unsigned) -1; /* infinite budget in this case */
2199 /* Anything to do at all? */
2200 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2203 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2204 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2205 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2208 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2209 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2210 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2211 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2212 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2213 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2214 * connections it will be counted five times. This difference in counting ("references"
2215 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2216 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2217 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2218 * currently chosen much higher than the "budget". */
2219 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2222 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2224 assert(u
->in_dbus_queue
);
2226 bus_unit_send_change_signal(u
);
2229 if (budget
!= (unsigned) -1)
2233 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2234 assert(j
->in_dbus_queue
);
2236 bus_job_send_change_signal(j
);
2239 if (budget
!= (unsigned) -1)
2243 if (m
->send_reloading_done
) {
2244 m
->send_reloading_done
= false;
2245 bus_manager_send_reloading(m
, false);
2249 if (m
->pending_reload_message
) {
2250 bus_send_pending_reload_message(m
);
2257 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2258 Manager
*m
= userdata
;
2262 n
= recv(fd
, buf
, sizeof(buf
), 0);
2264 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2266 log_error("Got zero-length cgroups agent message, ignoring.");
2269 if ((size_t) n
>= sizeof(buf
)) {
2270 log_error("Got overly long cgroups agent message, ignoring.");
2274 if (memchr(buf
, 0, n
)) {
2275 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2280 manager_notify_cgroup_empty(m
, buf
);
2281 (void) bus_forward_agent_released(m
, buf
);
2286 static void manager_invoke_notify_message(
2289 const struct ucred
*ucred
,
2298 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2300 u
->notifygen
= m
->notifygen
;
2302 if (UNIT_VTABLE(u
)->notify_message
) {
2303 _cleanup_strv_free_
char **tags
= NULL
;
2305 tags
= strv_split(buf
, NEWLINE
);
2311 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2313 } else if (DEBUG_LOGGING
) {
2314 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2316 x
= ellipsize(buf
, 20, 90);
2320 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2324 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2326 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2327 Manager
*m
= userdata
;
2328 char buf
[NOTIFY_BUFFER_MAX
+1];
2329 struct iovec iovec
= {
2331 .iov_len
= sizeof(buf
)-1,
2334 struct cmsghdr cmsghdr
;
2335 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2336 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2338 struct msghdr msghdr
= {
2341 .msg_control
= &control
,
2342 .msg_controllen
= sizeof(control
),
2345 struct cmsghdr
*cmsg
;
2346 struct ucred
*ucred
= NULL
;
2347 _cleanup_free_ Unit
**array_copy
= NULL
;
2348 Unit
*u1
, *u2
, **array
;
2349 int r
, *fd_array
= NULL
;
2355 assert(m
->notify_fd
== fd
);
2357 if (revents
!= EPOLLIN
) {
2358 log_warning("Got unexpected poll event for notify fd.");
2362 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2364 if (IN_SET(errno
, EAGAIN
, EINTR
))
2365 return 0; /* Spurious wakeup, try again */
2367 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2368 * won't take notification messages anymore, but that's still better than busy looping around this:
2369 * being woken up over and over again but being unable to actually read the message off the socket. */
2370 return log_error_errno(errno
, "Failed to receive notification message: %m");
2373 CMSG_FOREACH(cmsg
, &msghdr
) {
2374 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2376 fd_array
= (int*) CMSG_DATA(cmsg
);
2377 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2379 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2380 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2381 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2383 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2390 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2392 close_many(fd_array
, n_fds
);
2398 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2399 log_warning("Received notify message without valid credentials. Ignoring.");
2403 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2404 log_warning("Received notify message exceeded maximum size. Ignoring.");
2408 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2409 * trailing NUL byte in the message, but don't expect it. */
2410 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2411 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2415 /* Make sure it's NUL-terminated. */
2418 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2421 /* Notify every unit that might be interested, which might be multiple. */
2422 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2423 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2424 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2431 array_copy
= newdup(Unit
*, array
, k
+1);
2435 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2436 * make sure we only invoke each unit's handler once. */
2438 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2442 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2446 for (size_t i
= 0; array_copy
[i
]; i
++) {
2447 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2452 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2454 if (fdset_size(fds
) > 0)
2455 log_warning("Got extra auxiliary fds with notification message, closing them.");
2460 static void manager_invoke_sigchld_event(
2463 const siginfo_t
*si
) {
2469 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2470 if (u
->sigchldgen
== m
->sigchldgen
)
2472 u
->sigchldgen
= m
->sigchldgen
;
2474 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2475 unit_unwatch_pid(u
, si
->si_pid
);
2477 if (UNIT_VTABLE(u
)->sigchld_event
)
2478 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2481 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2482 Manager
*m
= userdata
;
2489 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2490 * while it is a zombie. */
2492 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2494 if (errno
!= ECHILD
)
2495 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2503 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2504 _cleanup_free_ Unit
**array_copy
= NULL
;
2505 _cleanup_free_
char *name
= NULL
;
2506 Unit
*u1
, *u2
, **array
;
2508 (void) get_process_comm(si
.si_pid
, &name
);
2510 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2511 si
.si_pid
, strna(name
),
2512 sigchld_code_to_string(si
.si_code
),
2514 strna(si
.si_code
== CLD_EXITED
2515 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2516 : signal_to_string(si
.si_status
)));
2518 /* Increase the generation counter used for filtering out duplicate unit invocations */
2521 /* And now figure out the unit this belongs to, it might be multiple... */
2522 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2523 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2524 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2528 /* Count how many entries the array has */
2532 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2533 array_copy
= newdup(Unit
*, array
, n
+1);
2538 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2539 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2540 * each iteration. */
2542 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2543 * We only do this for the cgroup the PID belonged to. */
2544 (void) unit_check_oom(u1
);
2546 manager_invoke_sigchld_event(m
, u1
, &si
);
2549 manager_invoke_sigchld_event(m
, u2
, &si
);
2551 for (size_t i
= 0; array_copy
[i
]; i
++)
2552 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2555 /* And now, we actually reap the zombie. */
2556 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2557 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2564 /* All children processed for now, turn off event source */
2566 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2568 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2573 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2574 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2577 log_debug("Activating special unit %s", name
);
2579 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2581 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2584 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2585 /* If the user presses C-A-D more than
2586 * 7 times within 2s, we reboot/shutdown immediately,
2587 * unless it was disabled in system.conf */
2589 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2590 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2592 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2593 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2596 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2597 Manager
*m
= userdata
;
2599 struct signalfd_siginfo sfsi
;
2603 assert(m
->signal_fd
== fd
);
2605 if (revents
!= EPOLLIN
) {
2606 log_warning("Got unexpected events from signal file descriptor.");
2610 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2611 if (n
!= sizeof(sfsi
)) {
2613 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2617 if (IN_SET(errno
, EINTR
, EAGAIN
))
2620 /* We return an error here, which will kill this handler,
2621 * to avoid a busy loop on read error. */
2622 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2625 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2626 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2627 ? LOG_DEBUG
: LOG_INFO
,
2630 switch (sfsi
.ssi_signo
) {
2633 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2635 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2640 if (MANAGER_IS_SYSTEM(m
)) {
2641 /* This is for compatibility with the original sysvinit */
2642 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2645 m
->objective
= MANAGER_REEXECUTE
;
2651 if (MANAGER_IS_SYSTEM(m
))
2652 manager_handle_ctrl_alt_del(m
);
2654 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2655 JOB_REPLACE_IRREVERSIBLY
);
2659 /* This is a nop on non-init */
2660 if (MANAGER_IS_SYSTEM(m
))
2661 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2666 /* This is a nop on non-init */
2667 if (MANAGER_IS_SYSTEM(m
))
2668 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2673 if (manager_dbus_is_running(m
, false)) {
2674 log_info("Trying to reconnect to bus...");
2676 (void) bus_init_api(m
);
2678 if (MANAGER_IS_SYSTEM(m
))
2679 (void) bus_init_system(m
);
2681 log_info("Starting D-Bus service...");
2682 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2688 _cleanup_free_
char *dump
= NULL
;
2690 r
= manager_get_dump_string(m
, &dump
);
2692 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2696 log_dump(LOG_INFO
, dump
);
2701 if (verify_run_space_and_log("Refusing to reload") < 0)
2704 m
->objective
= MANAGER_RELOAD
;
2709 /* Starting SIGRTMIN+0 */
2710 static const struct {
2713 } target_table
[] = {
2714 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2715 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2716 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2717 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2718 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2719 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2720 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2723 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2724 static const ManagerObjective objective_table
[] = {
2726 [1] = MANAGER_POWEROFF
,
2727 [2] = MANAGER_REBOOT
,
2728 [3] = MANAGER_KEXEC
,
2731 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2732 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2733 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2734 manager_start_target(m
, target_table
[idx
].target
,
2735 target_table
[idx
].mode
);
2739 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2740 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2741 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2745 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2748 manager_set_show_status(m
, SHOW_STATUS_YES
, "signal");
2752 manager_set_show_status(m
, SHOW_STATUS_NO
, "signal");
2756 manager_override_log_level(m
, LOG_DEBUG
);
2760 manager_restore_original_log_level(m
);
2764 if (MANAGER_IS_USER(m
)) {
2765 m
->objective
= MANAGER_EXIT
;
2769 /* This is a nop on init */
2773 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2774 manager_restore_original_log_target(m
);
2778 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2782 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2786 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2793 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2794 Manager
*m
= userdata
;
2799 assert(m
->time_change_fd
== fd
);
2801 log_struct(LOG_DEBUG
,
2802 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2803 LOG_MESSAGE("Time has been changed"));
2805 /* Restart the watch */
2806 (void) manager_setup_time_change(m
);
2808 HASHMAP_FOREACH(u
, m
->units
, i
)
2809 if (UNIT_VTABLE(u
)->time_change
)
2810 UNIT_VTABLE(u
)->time_change(u
);
2815 static int manager_dispatch_timezone_change(
2816 sd_event_source
*source
,
2817 const struct inotify_event
*e
,
2820 Manager
*m
= userdata
;
2827 log_debug("inotify event for /etc/localtime");
2829 changed
= manager_read_timezone_stat(m
);
2833 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2834 (void) manager_setup_timezone_change(m
);
2836 /* Read the new timezone */
2839 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2841 HASHMAP_FOREACH(u
, m
->units
, i
)
2842 if (UNIT_VTABLE(u
)->timezone_change
)
2843 UNIT_VTABLE(u
)->timezone_change(u
);
2848 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2849 Manager
*m
= userdata
;
2852 assert(m
->idle_pipe
[2] == fd
);
2854 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2855 * now turn off any further console output if there's at least one service that needs console access, so that
2856 * from now on our own output should not spill into that service's output anymore. After all, we support
2857 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2858 * exclusively without our interference. */
2859 m
->no_console_output
= m
->n_on_console
> 0;
2861 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2862 * by closing the pipes towards them, which is what they are waiting for. */
2863 manager_close_idle_pipe(m
);
2868 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2869 Manager
*m
= userdata
;
2876 manager_print_jobs_in_progress(m
);
2878 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2879 r
= sd_event_source_set_time(source
, next
);
2883 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2886 int manager_loop(Manager
*m
) {
2887 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2891 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2893 manager_check_finished(m
);
2895 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2896 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2898 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2900 while (m
->objective
== MANAGER_OK
) {
2903 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2906 if (!ratelimit_below(&rl
)) {
2907 /* Yay, something is going seriously wrong, pause a little */
2908 log_warning("Looping too fast. Throttling execution a little.");
2912 if (manager_dispatch_load_queue(m
) > 0)
2915 if (manager_dispatch_gc_job_queue(m
) > 0)
2918 if (manager_dispatch_gc_unit_queue(m
) > 0)
2921 if (manager_dispatch_cleanup_queue(m
) > 0)
2924 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2927 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2930 if (manager_dispatch_dbus_queue(m
) > 0)
2933 /* Sleep for half the watchdog time */
2934 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2935 wait_usec
= m
->runtime_watchdog
/ 2;
2939 wait_usec
= USEC_INFINITY
;
2941 r
= sd_event_run(m
->event
, wait_usec
);
2943 return log_error_errno(r
, "Failed to run event loop: %m");
2946 return m
->objective
;
2949 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2950 _cleanup_free_
char *n
= NULL
;
2951 sd_id128_t invocation_id
;
2959 r
= unit_name_from_dbus_path(s
, &n
);
2963 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2964 * as invocation ID. */
2965 r
= sd_id128_from_string(n
, &invocation_id
);
2967 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2973 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2974 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2975 SD_ID128_FORMAT_VAL(invocation_id
));
2978 /* If this didn't work, we check if this is a unit name */
2979 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2980 _cleanup_free_
char *nn
= NULL
;
2983 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2984 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2987 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2995 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
3005 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
3009 r
= safe_atou(p
, &id
);
3013 j
= manager_get_job(m
, id
);
3022 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3025 _cleanup_free_
char *p
= NULL
;
3029 if (!MANAGER_IS_SYSTEM(m
))
3032 audit_fd
= get_audit_fd();
3036 /* Don't generate audit events if the service was already
3037 * started and we're just deserializing */
3038 if (MANAGER_IS_RELOADING(m
))
3041 if (u
->type
!= UNIT_SERVICE
)
3044 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3046 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3050 msg
= strjoina("unit=", p
);
3051 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3053 /* We aren't allowed to send audit messages?
3054 * Then let's not retry again. */
3057 log_warning_errno(errno
, "Failed to send audit message: %m");
3063 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3064 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3065 _cleanup_free_
char *message
= NULL
;
3066 _cleanup_close_
int fd
= -1;
3069 /* Don't generate plymouth events if the service was already
3070 * started and we're just deserializing */
3071 if (MANAGER_IS_RELOADING(m
))
3074 if (!MANAGER_IS_SYSTEM(m
))
3077 if (detect_container() > 0)
3080 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3083 /* We set SOCK_NONBLOCK here so that we rather drop the
3084 * message then wait for plymouth */
3085 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3087 log_error_errno(errno
, "socket() failed: %m");
3091 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3092 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3093 log_error_errno(errno
, "connect() failed: %m");
3097 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3103 if (write(fd
, message
, n
+ 1) != n
+ 1)
3104 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3105 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3108 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3114 fd
= open_serialization_fd("systemd-state");
3118 f
= fdopen(fd
, "w+");
3128 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3133 /* The following timestamps only apply to the host system, hence only serialize them there */
3135 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3136 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3137 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3138 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3141 int manager_serialize(
3145 bool switching_root
) {
3157 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3159 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3160 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3161 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3162 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3163 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3164 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3165 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3167 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3168 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3170 t
= show_status_to_string(m
->show_status
);
3172 (void) serialize_item(f
, "show-status", t
);
3174 if (m
->log_level_overridden
)
3175 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3176 if (m
->log_target_overridden
)
3177 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3179 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3180 _cleanup_free_
char *joined
= NULL
;
3182 if (!manager_timestamp_shall_serialize(q
))
3185 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3189 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3192 if (!switching_root
)
3193 (void) serialize_strv(f
, "env", m
->client_environment
);
3195 if (m
->notify_fd
>= 0) {
3196 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3200 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3203 if (m
->cgroups_agent_fd
>= 0) {
3204 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3209 if (m
->user_lookup_fds
[0] >= 0) {
3212 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3214 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3216 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3218 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3220 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3223 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3225 r
= dynamic_user_serialize(m
, f
, fds
);
3229 manager_serialize_uid_refs(m
, f
);
3230 manager_serialize_gid_refs(m
, f
);
3232 r
= exec_runtime_serialize(m
, f
, fds
);
3236 (void) fputc('\n', f
);
3238 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3246 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3251 r
= fflush_and_check(f
);
3253 return log_error_errno(r
, "Failed to flush serialization: %m");
3255 r
= bus_fdset_add_all(m
, fds
);
3257 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3262 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3266 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3270 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3273 r
= unit_deserialize(u
, f
, fds
);
3277 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3283 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3284 const char *unit_name
;
3288 _cleanup_free_
char *line
= NULL
;
3290 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3292 return log_error_errno(r
, "Failed to read serialization line: %m");
3296 unit_name
= strstrip(line
);
3298 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3302 r
= unit_deserialize_skip(f
);
3311 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3317 log_debug("Deserializing state...");
3319 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3320 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3322 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3325 _cleanup_free_
char *line
= NULL
;
3326 const char *val
, *l
;
3328 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3330 return log_error_errno(r
, "Failed to read serialization line: %m");
3335 if (isempty(l
)) /* end marker */
3338 if ((val
= startswith(l
, "current-job-id="))) {
3341 if (safe_atou32(val
, &id
) < 0)
3342 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3344 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3346 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3349 if (safe_atou32(val
, &n
) < 0)
3350 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3352 m
->n_installed_jobs
+= n
;
3354 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3357 if (safe_atou32(val
, &n
) < 0)
3358 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3360 m
->n_failed_jobs
+= n
;
3362 } else if ((val
= startswith(l
, "taint-usr="))) {
3365 b
= parse_boolean(val
);
3367 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3369 m
->taint_usr
= m
->taint_usr
|| b
;
3371 } else if ((val
= startswith(l
, "ready-sent="))) {
3374 b
= parse_boolean(val
);
3376 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3378 m
->ready_sent
= m
->ready_sent
|| b
;
3380 } else if ((val
= startswith(l
, "taint-logged="))) {
3383 b
= parse_boolean(val
);
3385 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3387 m
->taint_logged
= m
->taint_logged
|| b
;
3389 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3392 b
= parse_boolean(val
);
3394 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3396 m
->service_watchdogs
= b
;
3398 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3401 b
= parse_boolean(val
);
3403 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3405 m
->honor_device_enumeration
= b
;
3407 } else if ((val
= startswith(l
, "show-status="))) {
3410 s
= show_status_from_string(val
);
3412 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3414 manager_set_show_status(m
, s
, "deserialization");
3416 } else if ((val
= startswith(l
, "log-level-override="))) {
3419 level
= log_level_from_string(val
);
3421 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3423 manager_override_log_level(m
, level
);
3425 } else if ((val
= startswith(l
, "log-target-override="))) {
3428 target
= log_target_from_string(val
);
3430 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3432 manager_override_log_target(m
, target
);
3434 } else if (startswith(l
, "env=")) {
3435 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3437 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3439 } else if ((val
= startswith(l
, "notify-fd="))) {
3442 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3443 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3445 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3446 safe_close(m
->notify_fd
);
3447 m
->notify_fd
= fdset_remove(fds
, fd
);
3450 } else if ((val
= startswith(l
, "notify-socket="))) {
3451 r
= free_and_strdup(&m
->notify_socket
, val
);
3455 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3458 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3459 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3461 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3462 safe_close(m
->cgroups_agent_fd
);
3463 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3466 } else if ((val
= startswith(l
, "user-lookup="))) {
3469 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3470 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3472 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3473 safe_close_pair(m
->user_lookup_fds
);
3474 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3475 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3478 } else if ((val
= startswith(l
, "dynamic-user=")))
3479 dynamic_user_deserialize_one(m
, val
, fds
);
3480 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3481 manager_deserialize_uid_refs_one(m
, val
);
3482 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3483 manager_deserialize_gid_refs_one(m
, val
);
3484 else if ((val
= startswith(l
, "exec-runtime=")))
3485 exec_runtime_deserialize_one(m
, val
, fds
);
3486 else if ((val
= startswith(l
, "subscribed="))) {
3488 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3494 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3495 val
= startswith(l
, manager_timestamp_to_string(q
));
3499 val
= startswith(val
, "-timestamp=");
3504 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3505 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3506 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3507 log_notice("Unknown serialization item '%s', ignoring.", l
);
3511 return manager_deserialize_units(m
, f
, fds
);
3514 int manager_reload(Manager
*m
) {
3515 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3516 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3517 _cleanup_fclose_
FILE *f
= NULL
;
3522 r
= manager_open_serialization(m
, &f
);
3524 return log_error_errno(r
, "Failed to create serialization file: %m");
3530 /* We are officially in reload mode from here on. */
3531 reloading
= manager_reloading_start(m
);
3533 r
= manager_serialize(m
, f
, fds
, false);
3537 if (fseeko(f
, 0, SEEK_SET
) < 0)
3538 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3540 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3543 bus_manager_send_reloading(m
, true);
3545 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3546 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3549 manager_clear_jobs_and_units(m
);
3550 lookup_paths_flush_generator(&m
->lookup_paths
);
3551 lookup_paths_free(&m
->lookup_paths
);
3552 exec_runtime_vacuum(m
);
3553 dynamic_user_vacuum(m
, false);
3554 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3555 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3557 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3559 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3561 (void) manager_run_environment_generators(m
);
3562 (void) manager_run_generators(m
);
3564 lookup_paths_log(&m
->lookup_paths
);
3566 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3567 manager_free_unit_name_maps(m
);
3569 /* First, enumerate what we can from kernel and suchlike */
3570 manager_enumerate_perpetual(m
);
3571 manager_enumerate(m
);
3573 /* Second, deserialize our stored data */
3574 r
= manager_deserialize(m
, f
, fds
);
3576 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3578 /* We don't need the serialization anymore */
3581 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3582 (void) manager_setup_notify(m
);
3583 (void) manager_setup_cgroups_agent(m
);
3584 (void) manager_setup_user_lookup_fd(m
);
3586 /* Third, fire things up! */
3587 manager_coldplug(m
);
3589 /* Clean up runtime objects no longer referenced */
3592 /* Consider the reload process complete now. */
3593 assert(m
->n_reloading
> 0);
3596 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3597 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3598 * let's always set the flag here for safety. */
3599 m
->honor_device_enumeration
= true;
3603 m
->send_reloading_done
= true;
3607 void manager_reset_failed(Manager
*m
) {
3613 HASHMAP_FOREACH(u
, m
->units
, i
)
3614 unit_reset_failed(u
);
3617 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3623 /* Returns true if the unit is inactive or going down */
3624 u
= manager_get_unit(m
, name
);
3628 return unit_inactive_or_pending(u
);
3631 static void log_taint_string(Manager
*m
) {
3632 _cleanup_free_
char *taint
= NULL
;
3636 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3639 m
->taint_logged
= true; /* only check for taint once */
3641 taint
= manager_taint_string(m
);
3645 log_struct(LOG_NOTICE
,
3646 LOG_MESSAGE("System is tainted: %s", taint
),
3648 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3651 static void manager_notify_finished(Manager
*m
) {
3652 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3653 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3655 if (MANAGER_IS_TEST_RUN(m
))
3658 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3659 char ts
[FORMAT_TIMESPAN_MAX
];
3660 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3663 size_t size
= sizeof buf
;
3665 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3666 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3667 * negative values. */
3669 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3670 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3671 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3672 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3674 if (firmware_usec
> 0)
3675 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3676 if (loader_usec
> 0)
3677 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3679 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3681 /* The initrd case on bare-metal*/
3682 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3683 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3685 log_struct(LOG_INFO
,
3686 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3687 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3688 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3689 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3690 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3692 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3693 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3694 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3695 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3697 /* The initrd-less case on bare-metal*/
3699 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3702 log_struct(LOG_INFO
,
3703 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3704 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3705 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3706 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3708 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3709 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3710 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3713 /* The container and --user case */
3714 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3715 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3717 log_struct(LOG_INFO
,
3718 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3719 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3720 LOG_MESSAGE("Startup finished in %s.",
3721 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3724 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3727 m
->ready_sent
? "STATUS=Startup finished in %s."
3729 "STATUS=Startup finished in %s.",
3730 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3731 m
->ready_sent
= true;
3733 log_taint_string(m
);
3736 static void manager_send_ready(Manager
*m
) {
3739 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3740 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3743 m
->ready_sent
= true;
3747 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3750 static void manager_check_basic_target(Manager
*m
) {
3755 /* Small shortcut */
3756 if (m
->ready_sent
&& m
->taint_logged
)
3759 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3760 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3763 /* For user managers, send out READY=1 as soon as we reach basic.target */
3764 manager_send_ready(m
);
3766 /* Log the taint string as soon as we reach basic.target */
3767 log_taint_string(m
);
3770 void manager_check_finished(Manager
*m
) {
3773 if (MANAGER_IS_RELOADING(m
))
3776 /* Verify that we have entered the event loop already, and not left it again. */
3777 if (!MANAGER_IS_RUNNING(m
))
3780 manager_check_basic_target(m
);
3782 if (hashmap_size(m
->jobs
) > 0) {
3783 if (m
->jobs_in_progress_event_source
)
3784 /* Ignore any failure, this is only for feedback */
3785 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
3786 manager_watch_jobs_next_time(m
));
3790 manager_flip_auto_status(m
, false, "boot finished");
3792 /* Notify Type=idle units that we are done now */
3793 manager_close_idle_pipe(m
);
3795 /* Turn off confirm spawn now */
3796 m
->confirm_spawn
= NULL
;
3798 /* No need to update ask password status when we're going non-interactive */
3799 manager_close_ask_password(m
);
3801 /* This is no longer the first boot */
3802 manager_set_first_boot(m
, false);
3804 if (MANAGER_IS_FINISHED(m
))
3807 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3809 manager_notify_finished(m
);
3811 manager_invalidate_startup_units(m
);
3814 static bool generator_path_any(const char* const* paths
) {
3818 /* Optimize by skipping the whole process by not creating output directories
3819 * if no generators are found. */
3820 STRV_FOREACH(path
, (char**) paths
)
3821 if (access(*path
, F_OK
) == 0)
3823 else if (errno
!= ENOENT
)
3824 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3829 static int manager_run_environment_generators(Manager
*m
) {
3830 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3831 _cleanup_strv_free_
char **paths
= NULL
;
3833 [STDOUT_GENERATE
] = &tmp
,
3834 [STDOUT_COLLECT
] = &tmp
,
3835 [STDOUT_CONSUME
] = &m
->transient_environment
,
3839 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3842 paths
= env_generator_binary_paths(MANAGER_IS_SYSTEM(m
));
3846 if (!generator_path_any((const char* const*) paths
))
3849 RUN_WITH_UMASK(0022)
3850 r
= execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3851 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3855 static int manager_run_generators(Manager
*m
) {
3856 _cleanup_strv_free_
char **paths
= NULL
;
3857 const char *argv
[5];
3862 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3865 paths
= generator_binary_paths(m
->unit_file_scope
);
3869 if (!generator_path_any((const char* const*) paths
))
3872 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3874 log_error_errno(r
, "Failed to create generator directories: %m");
3878 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3879 argv
[1] = m
->lookup_paths
.generator
;
3880 argv
[2] = m
->lookup_paths
.generator_early
;
3881 argv
[3] = m
->lookup_paths
.generator_late
;
3884 RUN_WITH_UMASK(0022)
3885 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3886 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3891 lookup_paths_trim_generator(&m
->lookup_paths
);
3895 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3900 if (strv_isempty(plus
))
3903 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3907 sanitize_environment(a
);
3909 return strv_free_and_replace(m
->transient_environment
, a
);
3912 int manager_client_environment_modify(
3917 char **a
= NULL
, **b
= NULL
, **l
;
3921 if (strv_isempty(minus
) && strv_isempty(plus
))
3924 l
= m
->client_environment
;
3926 if (!strv_isempty(minus
)) {
3927 a
= strv_env_delete(l
, 1, minus
);
3934 if (!strv_isempty(plus
)) {
3935 b
= strv_env_merge(2, l
, plus
);
3944 if (m
->client_environment
!= l
)
3945 strv_free(m
->client_environment
);
3952 m
->client_environment
= sanitize_environment(l
);
3956 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3962 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3970 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3975 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3976 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3978 if (!default_rlimit
[i
])
3981 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3989 void manager_recheck_dbus(Manager
*m
) {
3992 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3993 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3994 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3995 * while in the user instance we can assume it's already there. */
3997 if (MANAGER_IS_RELOADING(m
))
3998 return; /* don't check while we are reloading… */
4000 if (manager_dbus_is_running(m
, false)) {
4001 (void) bus_init_api(m
);
4003 if (MANAGER_IS_SYSTEM(m
))
4004 (void) bus_init_system(m
);
4006 (void) bus_done_api(m
);
4008 if (MANAGER_IS_SYSTEM(m
))
4009 (void) bus_done_system(m
);
4013 static bool manager_journal_is_running(Manager
*m
) {
4018 if (MANAGER_IS_TEST_RUN(m
))
4021 /* If we are the user manager we can safely assume that the journal is up */
4022 if (!MANAGER_IS_SYSTEM(m
))
4025 /* Check that the socket is not only up, but in RUNNING state */
4026 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4029 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4032 /* Similar, check if the daemon itself is fully up, too */
4033 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4036 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4042 void disable_printk_ratelimit(void) {
4043 /* Disable kernel's printk ratelimit.
4045 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4046 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4047 * setting takes precedence. */
4050 r
= sysctl_write("kernel/printk_devkmsg", "on");
4052 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4055 void manager_recheck_journal(Manager
*m
) {
4059 /* Don't bother with this unless we are in the special situation of being PID 1 */
4060 if (getpid_cached() != 1)
4063 /* Don't check this while we are reloading, things might still change */
4064 if (MANAGER_IS_RELOADING(m
))
4067 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4068 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4069 * an activation ourselves we can't fulfill. */
4070 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4074 void manager_set_show_status(Manager
*m
, ShowStatus mode
, const char *reason
) {
4076 assert(mode
>= 0 && mode
< _SHOW_STATUS_MAX
);
4078 if (!MANAGER_IS_SYSTEM(m
))
4081 if (mode
== m
->show_status
)
4084 bool enabled
= IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4085 log_debug("%s (%s) showing of status (%s).",
4086 enabled
? "Enabling" : "Disabling",
4087 strna(show_status_to_string(mode
)),
4089 m
->show_status
= mode
;
4092 (void) touch("/run/systemd/show-status");
4094 (void) unlink("/run/systemd/show-status");
4097 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4100 if (!MANAGER_IS_SYSTEM(m
))
4103 if (m
->no_console_output
)
4106 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4109 /* If we cannot find out the status properly, just proceed. */
4110 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4113 if (type
== STATUS_TYPE_NOTICE
&& m
->show_status
!= SHOW_STATUS_NO
)
4116 return show_status_on(m
->show_status
);
4119 const char *manager_get_confirm_spawn(Manager
*m
) {
4120 static int last_errno
= 0;
4126 /* Here's the deal: we want to test the validity of the console but don't want
4127 * PID1 to go through the whole console process which might block. But we also
4128 * want to warn the user only once if something is wrong with the console so we
4129 * cannot do the sanity checks after spawning our children. So here we simply do
4130 * really basic tests to hopefully trap common errors.
4132 * If the console suddenly disappear at the time our children will really it
4133 * then they will simply fail to acquire it and a positive answer will be
4134 * assumed. New children will fallback to /dev/console though.
4136 * Note: TTYs are devices that can come and go any time, and frequently aren't
4137 * available yet during early boot (consider a USB rs232 dongle...). If for any
4138 * reason the configured console is not ready, we fallback to the default
4141 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4142 return m
->confirm_spawn
;
4144 if (stat(m
->confirm_spawn
, &st
) < 0) {
4149 if (!S_ISCHR(st
.st_mode
)) {
4155 return m
->confirm_spawn
;
4158 if (last_errno
!= r
)
4159 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4161 return "/dev/console";
4164 void manager_set_first_boot(Manager
*m
, bool b
) {
4167 if (!MANAGER_IS_SYSTEM(m
))
4170 if (m
->first_boot
!= (int) b
) {
4172 (void) touch("/run/systemd/first-boot");
4174 (void) unlink("/run/systemd/first-boot");
4180 void manager_disable_confirm_spawn(void) {
4181 (void) touch("/run/systemd/confirm_spawn_disabled");
4184 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4185 if (!m
->confirm_spawn
)
4188 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4191 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4194 /* If m is NULL, assume we're after shutdown and let the messages through. */
4196 if (m
&& !manager_get_show_status(m
, type
))
4199 /* XXX We should totally drop the check for ephemeral here
4200 * and thus effectively make 'Type=idle' pointless. */
4201 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4204 va_start(ap
, format
);
4205 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4209 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4210 char p
[strlen(path
)+1];
4216 path_simplify(p
, false);
4218 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4221 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4226 assert(u
->manager
== m
);
4228 size
= set_size(m
->failed_units
);
4231 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4235 if (set_put(m
->failed_units
, u
) < 0)
4238 (void) set_remove(m
->failed_units
, u
);
4240 if (set_size(m
->failed_units
) != size
)
4241 bus_manager_send_change_signal(m
);
4246 ManagerState
manager_state(Manager
*m
) {
4251 /* Did we ever finish booting? If not then we are still starting up */
4252 if (!MANAGER_IS_FINISHED(m
)) {
4254 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4255 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4256 return MANAGER_INITIALIZING
;
4258 return MANAGER_STARTING
;
4261 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4262 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4263 if (u
&& unit_active_or_pending(u
))
4264 return MANAGER_STOPPING
;
4266 if (MANAGER_IS_SYSTEM(m
)) {
4267 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4268 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4269 if (u
&& unit_active_or_pending(u
))
4270 return MANAGER_MAINTENANCE
;
4272 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4273 if (u
&& unit_active_or_pending(u
))
4274 return MANAGER_MAINTENANCE
;
4277 /* Are there any failed units? If so, we are in degraded mode */
4278 if (set_size(m
->failed_units
) > 0)
4279 return MANAGER_DEGRADED
;
4281 return MANAGER_RUNNING
;
4284 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4286 static void manager_unref_uid_internal(
4291 int (*_clean_ipc
)(uid_t uid
)) {
4297 assert(uid_is_valid(uid
));
4300 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4301 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4303 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4304 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4305 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4306 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4308 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4309 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4311 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4314 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4316 n
= c
& ~DESTROY_IPC_FLAG
;
4320 if (destroy_now
&& n
== 0) {
4321 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4323 if (c
& DESTROY_IPC_FLAG
) {
4324 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4325 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4327 (void) _clean_ipc(uid
);
4330 c
= n
| (c
& DESTROY_IPC_FLAG
);
4331 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4335 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4336 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4339 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4340 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4343 static int manager_ref_uid_internal(
4354 assert(uid_is_valid(uid
));
4356 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4357 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4359 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4360 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4362 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4365 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4369 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4371 n
= c
& ~DESTROY_IPC_FLAG
;
4374 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4377 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4379 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4382 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4383 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4386 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4387 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4390 static void manager_vacuum_uid_refs_internal(
4393 int (*_clean_ipc
)(uid_t uid
)) {
4402 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4406 uid
= PTR_TO_UID(k
);
4407 c
= PTR_TO_UINT32(p
);
4409 n
= c
& ~DESTROY_IPC_FLAG
;
4413 if (c
& DESTROY_IPC_FLAG
) {
4414 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4415 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4417 (void) _clean_ipc(uid
);
4420 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4424 void manager_vacuum_uid_refs(Manager
*m
) {
4425 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4428 void manager_vacuum_gid_refs(Manager
*m
) {
4429 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4432 static void manager_serialize_uid_refs_internal(
4436 const char *field_name
) {
4446 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4447 * of it is better rebuild after a reload/reexec. */
4449 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4453 uid
= PTR_TO_UID(k
);
4454 c
= PTR_TO_UINT32(p
);
4456 if (!(c
& DESTROY_IPC_FLAG
))
4459 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4463 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4464 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4467 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4468 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4471 static void manager_deserialize_uid_refs_one_internal(
4474 const char *value
) {
4484 r
= parse_uid(value
, &uid
);
4485 if (r
< 0 || uid
== 0) {
4486 log_debug("Unable to parse UID reference serialization: " UID_FMT
, uid
);
4490 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4496 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4497 if (c
& DESTROY_IPC_FLAG
)
4500 c
|= DESTROY_IPC_FLAG
;
4502 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4504 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4509 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4510 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4513 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4514 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4517 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4521 char unit_name
[UNIT_NAME_MAX
+1];
4524 Manager
*m
= userdata
;
4532 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4533 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4534 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4536 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4538 if (IN_SET(errno
, EINTR
, EAGAIN
))
4541 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4544 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4545 log_warning("Received too short user lookup message, ignoring.");
4549 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4550 log_warning("Received too long user lookup message, ignoring.");
4554 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4555 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4559 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4560 if (memchr(buffer
.unit_name
, 0, n
)) {
4561 log_warning("Received lookup message with embedded NUL character, ignoring.");
4565 buffer
.unit_name
[n
] = 0;
4566 u
= manager_get_unit(m
, buffer
.unit_name
);
4568 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4572 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4574 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4578 char *manager_taint_string(Manager
*m
) {
4579 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4583 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4584 * Only things that are detected at runtime should be tagged
4585 * here. For stuff that is set during compilation, emit a warning
4586 * in the configuration phase. */
4590 buf
= new(char, sizeof("split-usr:"
4594 "overflowuid-not-65534:"
4595 "overflowgid-not-65534:"));
4603 e
= stpcpy(e
, "split-usr:");
4605 if (access("/proc/cgroups", F_OK
) < 0)
4606 e
= stpcpy(e
, "cgroups-missing:");
4608 if (clock_is_localtime(NULL
) > 0)
4609 e
= stpcpy(e
, "local-hwclock:");
4611 r
= readlink_malloc("/var/run", &destination
);
4612 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4613 e
= stpcpy(e
, "var-run-bad:");
4615 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4616 if (r
>= 0 && !streq(overflowuid
, "65534"))
4617 e
= stpcpy(e
, "overflowuid-not-65534:");
4619 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4620 if (r
>= 0 && !streq(overflowgid
, "65534"))
4621 e
= stpcpy(e
, "overflowgid-not-65534:");
4623 /* remove the last ':' */
4630 void manager_ref_console(Manager
*m
) {
4636 void manager_unref_console(Manager
*m
) {
4638 assert(m
->n_on_console
> 0);
4641 if (m
->n_on_console
== 0)
4642 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4645 void manager_override_log_level(Manager
*m
, int level
) {
4646 _cleanup_free_
char *s
= NULL
;
4649 if (!m
->log_level_overridden
) {
4650 m
->original_log_level
= log_get_max_level();
4651 m
->log_level_overridden
= true;
4654 (void) log_level_to_string_alloc(level
, &s
);
4655 log_info("Setting log level to %s.", strna(s
));
4657 log_set_max_level(level
);
4660 void manager_restore_original_log_level(Manager
*m
) {
4661 _cleanup_free_
char *s
= NULL
;
4664 if (!m
->log_level_overridden
)
4667 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4668 log_info("Restoring log level to original (%s).", strna(s
));
4670 log_set_max_level(m
->original_log_level
);
4671 m
->log_level_overridden
= false;
4674 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4677 if (!m
->log_target_overridden
) {
4678 m
->original_log_target
= log_get_target();
4679 m
->log_target_overridden
= true;
4682 log_info("Setting log target to %s.", log_target_to_string(target
));
4683 log_set_target(target
);
4686 void manager_restore_original_log_target(Manager
*m
) {
4689 if (!m
->log_target_overridden
)
4692 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4694 log_set_target(m
->original_log_target
);
4695 m
->log_target_overridden
= false;
4698 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4700 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4701 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4702 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4706 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4707 [MANAGER_INITIALIZING
] = "initializing",
4708 [MANAGER_STARTING
] = "starting",
4709 [MANAGER_RUNNING
] = "running",
4710 [MANAGER_DEGRADED
] = "degraded",
4711 [MANAGER_MAINTENANCE
] = "maintenance",
4712 [MANAGER_STOPPING
] = "stopping",
4715 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4717 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4718 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4719 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4720 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4721 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4722 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4723 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4724 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4725 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4726 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4727 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4728 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4729 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4730 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4731 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4732 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4733 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4734 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4735 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4738 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4740 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4741 [OOM_CONTINUE
] = "continue",
4742 [OOM_STOP
] = "stop",
4743 [OOM_KILL
] = "kill",
4746 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);