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"
33 #include "dbus-manager.h"
34 #include "dbus-unit.h"
37 #include "dirent-util.h"
40 #include "exec-util.h"
42 #include "exit-status.h"
50 #include "locale-setup.h"
54 #include "memory-util.h"
56 #include "parse-util.h"
57 #include "path-lookup.h"
58 #include "path-util.h"
59 #include "process-util.h"
60 #include "ratelimit.h"
61 #include "rlimit-util.h"
63 #include "serialize.h"
64 #include "signal-util.h"
65 #include "socket-util.h"
67 #include "stat-util.h"
68 #include "string-table.h"
69 #include "string-util.h"
72 #include "sysctl-util.h"
73 #include "syslog-util.h"
74 #include "terminal-util.h"
75 #include "time-util.h"
76 #include "transaction.h"
77 #include "umask-util.h"
78 #include "unit-name.h"
79 #include "user-util.h"
83 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
84 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
86 /* Initial delay and the interval for printing status messages about running jobs */
87 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
88 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
89 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
91 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
92 * the queue gets more empty. */
93 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
95 /* How many units and jobs to process of the bus queue before returning to the event loop. */
96 #define MANAGER_BUS_MESSAGE_BUDGET 100U
98 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
99 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
100 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
101 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
105 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
106 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
107 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
108 static int manager_run_environment_generators(Manager
*m
);
109 static int manager_run_generators(Manager
*m
);
111 static void manager_watch_jobs_in_progress(Manager
*m
) {
117 /* We do not want to show the cylon animation if the user
118 * needs to confirm service executions otherwise confirmation
119 * messages will be screwed by the cylon animation. */
120 if (!manager_is_confirm_spawn_disabled(m
))
123 if (m
->jobs_in_progress_event_source
)
126 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
127 r
= sd_event_add_time(
129 &m
->jobs_in_progress_event_source
,
132 manager_dispatch_jobs_in_progress
, m
);
136 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
139 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
141 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
144 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
145 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
149 p
= mempset(p
, ' ', pos
-2);
150 if (log_get_show_color())
151 p
= stpcpy(p
, ANSI_RED
);
155 if (pos
> 0 && pos
<= width
) {
156 if (log_get_show_color())
157 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
161 if (log_get_show_color())
162 p
= stpcpy(p
, ANSI_NORMAL
);
165 if (log_get_show_color())
166 p
= stpcpy(p
, ANSI_RED
);
169 p
= mempset(p
, ' ', width
-1-pos
);
170 if (log_get_show_color())
171 strcpy(p
, ANSI_NORMAL
);
175 void manager_flip_auto_status(Manager
*m
, bool enable
) {
179 if (m
->show_status
== SHOW_STATUS_AUTO
)
180 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
182 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
183 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
187 static void manager_print_jobs_in_progress(Manager
*m
) {
188 _cleanup_free_
char *job_of_n
= NULL
;
191 unsigned counter
= 0, print_nr
;
192 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
194 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
198 assert(m
->n_running_jobs
> 0);
200 manager_flip_auto_status(m
, true);
202 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
204 HASHMAP_FOREACH(j
, m
->jobs
, i
)
205 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
208 /* m->n_running_jobs must be consistent with the contents of m->jobs,
209 * so the above loop must have succeeded in finding j. */
210 assert(counter
== print_nr
+ 1);
213 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
215 cylon_pos
= 14 - cylon_pos
;
216 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
218 m
->jobs_in_progress_iteration
++;
220 if (m
->n_running_jobs
> 1) {
221 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
225 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
226 if (job_get_timeout(j
, &x
) > 0)
227 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
229 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
230 "%sA %s job is running for %s (%s / %s)",
232 job_type_to_string(j
->type
),
233 unit_status_string(j
->unit
),
237 static int have_ask_password(void) {
238 _cleanup_closedir_
DIR *dir
;
241 dir
= opendir("/run/systemd/ask-password");
249 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
250 if (startswith(de
->d_name
, "ask."))
256 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
257 int fd
, uint32_t revents
, void *userdata
) {
258 Manager
*m
= userdata
;
264 m
->have_ask_password
= have_ask_password();
265 if (m
->have_ask_password
< 0)
266 /* Log error but continue. Negative have_ask_password
267 * is treated as unknown status. */
268 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
273 static void manager_close_ask_password(Manager
*m
) {
276 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
277 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
278 m
->have_ask_password
= -EINVAL
;
281 static int manager_check_ask_password(Manager
*m
) {
286 if (!m
->ask_password_event_source
) {
287 assert(m
->ask_password_inotify_fd
< 0);
289 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
291 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
292 if (m
->ask_password_inotify_fd
< 0)
293 return log_error_errno(errno
, "Failed to create inotify object: %m");
295 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
296 "/run/systemd/ask-password",
297 IN_CREATE
|IN_DELETE
|IN_MOVE
);
299 manager_close_ask_password(m
);
303 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
304 m
->ask_password_inotify_fd
, EPOLLIN
,
305 manager_dispatch_ask_password_fd
, m
);
307 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
308 manager_close_ask_password(m
);
312 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
314 /* Queries might have been added meanwhile... */
315 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
316 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
319 return m
->have_ask_password
;
322 static int manager_watch_idle_pipe(Manager
*m
) {
327 if (m
->idle_pipe_event_source
)
330 if (m
->idle_pipe
[2] < 0)
333 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
335 return log_error_errno(r
, "Failed to watch idle pipe: %m");
337 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
342 static void manager_close_idle_pipe(Manager
*m
) {
345 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
347 safe_close_pair(m
->idle_pipe
);
348 safe_close_pair(m
->idle_pipe
+ 2);
351 static int manager_setup_time_change(Manager
*m
) {
356 if (MANAGER_IS_TEST_RUN(m
))
359 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
360 m
->time_change_fd
= safe_close(m
->time_change_fd
);
362 m
->time_change_fd
= time_change_fd();
363 if (m
->time_change_fd
< 0)
364 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
366 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
368 return log_error_errno(r
, "Failed to create time change event source: %m");
370 /* Schedule this slightly earlier than the .timer event sources */
371 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
373 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
375 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
377 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
382 static int manager_read_timezone_stat(Manager
*m
) {
388 /* Read the current stat() data of /etc/localtime so that we detect changes */
389 if (lstat("/etc/localtime", &st
) < 0) {
390 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
391 changed
= m
->etc_localtime_accessible
;
392 m
->etc_localtime_accessible
= false;
396 k
= timespec_load(&st
.st_mtim
);
397 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
399 m
->etc_localtime_mtime
= k
;
400 m
->etc_localtime_accessible
= true;
406 static int manager_setup_timezone_change(Manager
*m
) {
407 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
412 if (MANAGER_IS_TEST_RUN(m
))
415 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
416 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
417 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
418 * went to zero and all fds to it are closed.
420 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
423 * Note that we create the new event source first here, before releasing the old one. This should optimize
424 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
426 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
427 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
429 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
430 * O_CREATE or by rename() */
432 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
433 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
434 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
437 return log_error_errno(r
, "Failed to create timezone change event source: %m");
439 /* Schedule this slightly earlier than the .timer event sources */
440 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
442 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
444 sd_event_source_unref(m
->timezone_change_event_source
);
445 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
450 static int enable_special_signals(Manager
*m
) {
451 _cleanup_close_
int fd
= -1;
455 if (MANAGER_IS_TEST_RUN(m
))
458 /* Enable that we get SIGINT on control-alt-del. In containers
459 * this will fail with EPERM (older) or EINVAL (newer), so
461 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
462 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
464 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
466 /* Support systems without virtual console */
468 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
470 /* Enable that we get SIGWINCH on kbrequest */
471 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
472 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
478 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
480 static int manager_setup_signals(Manager
*m
) {
481 struct sigaction sa
= {
482 .sa_handler
= SIG_DFL
,
483 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
490 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
492 /* We make liberal use of realtime signals here. On
493 * Linux/glibc we have 30 of them (with the exception of Linux
494 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
497 assert_se(sigemptyset(&mask
) == 0);
498 sigset_add_many(&mask
,
499 SIGCHLD
, /* Child died */
500 SIGTERM
, /* Reexecute daemon */
501 SIGHUP
, /* Reload configuration */
502 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
503 SIGUSR2
, /* systemd: dump status */
504 SIGINT
, /* Kernel sends us this on control-alt-del */
505 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
506 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
508 SIGRTMIN
+0, /* systemd: start default.target */
509 SIGRTMIN
+1, /* systemd: isolate rescue.target */
510 SIGRTMIN
+2, /* systemd: isolate emergency.target */
511 SIGRTMIN
+3, /* systemd: start halt.target */
512 SIGRTMIN
+4, /* systemd: start poweroff.target */
513 SIGRTMIN
+5, /* systemd: start reboot.target */
514 SIGRTMIN
+6, /* systemd: start kexec.target */
516 /* ... space for more special targets ... */
518 SIGRTMIN
+13, /* systemd: Immediate halt */
519 SIGRTMIN
+14, /* systemd: Immediate poweroff */
520 SIGRTMIN
+15, /* systemd: Immediate reboot */
521 SIGRTMIN
+16, /* systemd: Immediate kexec */
523 /* ... space for more immediate system state changes ... */
525 SIGRTMIN
+20, /* systemd: enable status messages */
526 SIGRTMIN
+21, /* systemd: disable status messages */
527 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
528 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
529 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
531 /* .. one free signal here ... */
533 /* Apparently Linux on hppa had fewer RT signals until v3.18,
534 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
535 * see commit v3.17-7614-g1f25df2eff.
537 * We cannot unconditionally make use of those signals here,
538 * so let's use a runtime check. Since these commands are
539 * accessible by different means and only really a safety
540 * net, the missing functionality on hppa shouldn't matter.
543 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
544 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
545 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
546 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
548 /* ... one free signal here SIGRTMIN+30 ... */
550 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
552 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
553 if (m
->signal_fd
< 0)
556 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
560 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
562 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
563 * notify processing can still figure out to which process/service a message belongs, before we reap the
564 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
565 * status information before detecting that there's no process in a cgroup. */
566 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
570 if (MANAGER_IS_SYSTEM(m
))
571 return enable_special_signals(m
);
576 static char** sanitize_environment(char **l
) {
578 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
599 /* Let's order the environment alphabetically, just to make it pretty */
605 int manager_default_environment(Manager
*m
) {
610 m
->transient_environment
= strv_free(m
->transient_environment
);
612 if (MANAGER_IS_SYSTEM(m
)) {
613 /* The system manager always starts with a clean
614 * environment for its children. It does not import
615 * the kernel's or the parents' exported variables.
617 * The initial passed environment is untouched to keep
618 * /proc/self/environ valid; it is used for tagging
619 * the init process inside containers. */
620 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
621 if (!m
->transient_environment
)
624 /* Import locale variables LC_*= from configuration */
625 (void) locale_setup(&m
->transient_environment
);
627 _cleanup_free_
char *k
= NULL
;
629 /* The user manager passes its own environment
630 * along to its children, except for $PATH. */
631 m
->transient_environment
= strv_copy(environ
);
632 if (!m
->transient_environment
)
635 k
= strdup("PATH=" DEFAULT_USER_PATH
);
639 r
= strv_env_replace(&m
->transient_environment
, k
);
645 sanitize_environment(m
->transient_environment
);
650 static int manager_setup_prefix(Manager
*m
) {
656 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
657 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
658 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
659 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
660 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
661 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
664 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
665 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
666 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
667 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
668 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
669 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
672 const struct table_entry
*p
;
678 if (MANAGER_IS_SYSTEM(m
))
683 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
684 r
= sd_path_home(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
692 static void manager_free_unit_name_maps(Manager
*m
) {
693 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
694 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
695 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
696 m
->unit_cache_mtime
= 0;
699 static int manager_setup_run_queue(Manager
*m
) {
703 assert(!m
->run_queue_event_source
);
705 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
709 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
713 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
717 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
722 static int manager_setup_sigchld_event_source(Manager
*m
) {
726 assert(!m
->sigchld_event_source
);
728 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
732 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
736 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
740 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
745 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
746 _cleanup_(manager_freep
) Manager
*m
= NULL
;
750 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
757 .unit_file_scope
= scope
,
758 .objective
= _MANAGER_OBJECTIVE_INVALID
,
760 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
762 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
763 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
764 .default_tasks_accounting
= true,
765 .default_tasks_max
= TASKS_MAX_UNSET
,
766 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
767 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
768 .default_restart_usec
= DEFAULT_RESTART_USEC
,
770 .original_log_level
= -1,
771 .original_log_target
= _LOG_TARGET_INVALID
,
774 .cgroups_agent_fd
= -1,
776 .time_change_fd
= -1,
777 .user_lookup_fds
= { -1, -1 },
778 .private_listen_fd
= -1,
780 .cgroup_inotify_fd
= -1,
781 .pin_cgroupfs_fd
= -1,
782 .ask_password_inotify_fd
= -1,
783 .idle_pipe
= { -1, -1, -1, -1},
785 /* start as id #1, so that we can leave #0 around as "null-like" value */
788 .have_ask_password
= -EINVAL
, /* we don't know */
790 .test_run_flags
= test_run_flags
,
792 .default_oom_policy
= OOM_STOP
,
796 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
797 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
798 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
799 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
802 /* Prepare log fields we can use for structured logging */
803 if (MANAGER_IS_SYSTEM(m
)) {
804 m
->unit_log_field
= "UNIT=";
805 m
->unit_log_format_string
= "UNIT=%s";
807 m
->invocation_log_field
= "INVOCATION_ID=";
808 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
810 m
->unit_log_field
= "USER_UNIT=";
811 m
->unit_log_format_string
= "USER_UNIT=%s";
813 m
->invocation_log_field
= "USER_INVOCATION_ID=";
814 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
817 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
818 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
820 r
= manager_default_environment(m
);
824 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
828 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
832 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
836 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
840 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
844 r
= manager_setup_prefix(m
);
848 r
= sd_event_default(&m
->event
);
852 r
= manager_setup_run_queue(m
);
856 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
857 m
->cgroup_root
= strdup("");
861 r
= manager_setup_signals(m
);
865 r
= manager_setup_cgroup(m
);
869 r
= manager_setup_time_change(m
);
873 r
= manager_read_timezone_stat(m
);
877 (void) manager_setup_timezone_change(m
);
879 r
= manager_setup_sigchld_event_source(m
);
884 if (MANAGER_IS_SYSTEM(m
) && test_run_flags
== 0) {
885 r
= mkdir_label("/run/systemd/units", 0755);
886 if (r
< 0 && r
!= -EEXIST
)
892 dir_is_empty("/usr") > 0;
894 /* Note that we do not set up the notify fd here. We do that after deserialization,
895 * since they might have gotten serialized across the reexec. */
902 static int manager_setup_notify(Manager
*m
) {
905 if (MANAGER_IS_TEST_RUN(m
))
908 if (m
->notify_fd
< 0) {
909 _cleanup_close_
int fd
= -1;
910 union sockaddr_union sa
= {};
913 /* First free all secondary fields */
914 m
->notify_socket
= mfree(m
->notify_socket
);
915 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
917 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
919 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
921 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
923 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
924 if (!m
->notify_socket
)
927 salen
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
929 return log_error_errno(salen
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", m
->notify_socket
);
931 (void) mkdir_parents_label(m
->notify_socket
, 0755);
932 (void) sockaddr_un_unlink(&sa
.un
);
934 r
= bind(fd
, &sa
.sa
, salen
);
936 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
938 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
940 return log_error_errno(r
, "SO_PASSCRED failed: %m");
942 m
->notify_fd
= TAKE_FD(fd
);
944 log_debug("Using notification socket %s", m
->notify_socket
);
947 if (!m
->notify_event_source
) {
948 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
950 return log_error_errno(r
, "Failed to allocate notify event source: %m");
952 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
953 * service an exit message belongs. */
954 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
956 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
958 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
964 static int manager_setup_cgroups_agent(Manager
*m
) {
966 static const union sockaddr_union sa
= {
967 .un
.sun_family
= AF_UNIX
,
968 .un
.sun_path
= "/run/systemd/cgroups-agent",
972 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
973 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
974 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
975 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
976 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
977 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
978 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
979 * we thus won't lose messages.
981 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
982 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
983 * bus for these messages. */
985 if (MANAGER_IS_TEST_RUN(m
))
988 if (!MANAGER_IS_SYSTEM(m
))
991 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
993 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
994 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
997 if (m
->cgroups_agent_fd
< 0) {
998 _cleanup_close_
int fd
= -1;
1000 /* First free all secondary fields */
1001 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1003 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1005 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1007 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1009 (void) sockaddr_un_unlink(&sa
.un
);
1011 /* Only allow root to connect to this socket */
1012 RUN_WITH_UMASK(0077)
1013 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1015 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1017 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1020 if (!m
->cgroups_agent_event_source
) {
1021 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1023 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1025 /* Process cgroups notifications early. Note that when the agent notification is received
1026 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1027 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1028 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1030 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1032 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1038 static int manager_setup_user_lookup_fd(Manager
*m
) {
1043 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1044 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1045 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1046 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1047 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1048 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1049 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1050 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1053 * You might wonder why we need a communication channel for this that is independent of the usual notification
1054 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1055 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1056 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1058 * Note that this function is called under two circumstances: when we first initialize (in which case we
1059 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1060 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1062 if (m
->user_lookup_fds
[0] < 0) {
1064 /* Free all secondary fields */
1065 safe_close_pair(m
->user_lookup_fds
);
1066 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1068 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1069 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1071 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1074 if (!m
->user_lookup_event_source
) {
1075 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1077 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1079 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1081 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1083 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1085 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1091 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1097 while ((u
= m
->cleanup_queue
)) {
1098 assert(u
->in_cleanup_queue
);
1108 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1109 GC_OFFSET_UNSURE
, /* No clue */
1110 GC_OFFSET_GOOD
, /* We still need this unit */
1111 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1115 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1120 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1122 /* Recursively mark referenced units as GOOD as well */
1123 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1124 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1125 unit_gc_mark_good(other
, gc_marker
);
1128 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1136 if (IN_SET(u
->gc_marker
- gc_marker
,
1137 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1140 if (u
->in_cleanup_queue
)
1143 if (!unit_may_gc(u
))
1146 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1150 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1151 unit_gc_sweep(other
, gc_marker
);
1153 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1156 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1160 if (u
->refs_by_target
) {
1163 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1164 unit_gc_sweep(ref
->source
, gc_marker
);
1166 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1169 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1177 /* We were unable to find anything out about this entry, so
1178 * let's investigate it later */
1179 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1180 unit_add_to_gc_queue(u
);
1184 /* We definitely know that this one is not useful anymore, so
1185 * let's mark it for deletion */
1186 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1187 unit_add_to_cleanup_queue(u
);
1191 unit_gc_mark_good(u
, gc_marker
);
1194 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1195 unsigned n
= 0, gc_marker
;
1200 /* log_debug("Running GC..."); */
1202 m
->gc_marker
+= _GC_OFFSET_MAX
;
1203 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1206 gc_marker
= m
->gc_marker
;
1208 while ((u
= m
->gc_unit_queue
)) {
1209 assert(u
->in_gc_queue
);
1211 unit_gc_sweep(u
, gc_marker
);
1213 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1214 u
->in_gc_queue
= false;
1218 if (IN_SET(u
->gc_marker
- gc_marker
,
1219 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1221 log_unit_debug(u
, "Collecting.");
1222 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1223 unit_add_to_cleanup_queue(u
);
1230 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1236 while ((j
= m
->gc_job_queue
)) {
1237 assert(j
->in_gc_queue
);
1239 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1240 j
->in_gc_queue
= false;
1247 log_unit_debug(j
->unit
, "Collecting job.");
1248 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1254 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1261 while ((u
= m
->stop_when_unneeded_queue
)) {
1262 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1263 assert(m
->stop_when_unneeded_queue
);
1265 assert(u
->in_stop_when_unneeded_queue
);
1266 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1267 u
->in_stop_when_unneeded_queue
= false;
1271 if (!unit_is_unneeded(u
))
1274 log_unit_debug(u
, "Unit is not needed anymore.");
1276 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1277 * service being unnecessary after a while. */
1279 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1280 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1284 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1285 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1287 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1293 static void manager_clear_jobs_and_units(Manager
*m
) {
1298 while ((u
= hashmap_first(m
->units
)))
1301 manager_dispatch_cleanup_queue(m
);
1303 assert(!m
->load_queue
);
1304 assert(prioq_isempty(m
->run_queue
));
1305 assert(!m
->dbus_unit_queue
);
1306 assert(!m
->dbus_job_queue
);
1307 assert(!m
->cleanup_queue
);
1308 assert(!m
->gc_unit_queue
);
1309 assert(!m
->gc_job_queue
);
1310 assert(!m
->stop_when_unneeded_queue
);
1312 assert(hashmap_isempty(m
->jobs
));
1313 assert(hashmap_isempty(m
->units
));
1315 m
->n_on_console
= 0;
1316 m
->n_running_jobs
= 0;
1317 m
->n_installed_jobs
= 0;
1318 m
->n_failed_jobs
= 0;
1321 Manager
* manager_free(Manager
*m
) {
1322 ExecDirectoryType dt
;
1328 manager_clear_jobs_and_units(m
);
1330 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1331 if (unit_vtable
[c
]->shutdown
)
1332 unit_vtable
[c
]->shutdown(m
);
1334 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1335 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1337 lookup_paths_flush_generator(&m
->lookup_paths
);
1341 exec_runtime_vacuum(m
);
1342 hashmap_free(m
->exec_runtime_by_id
);
1344 dynamic_user_vacuum(m
, false);
1345 hashmap_free(m
->dynamic_users
);
1347 hashmap_free(m
->units
);
1348 hashmap_free(m
->units_by_invocation_id
);
1349 hashmap_free(m
->jobs
);
1350 hashmap_free(m
->watch_pids
);
1351 hashmap_free(m
->watch_bus
);
1353 prioq_free(m
->run_queue
);
1355 set_free(m
->startup_units
);
1356 set_free(m
->failed_units
);
1358 sd_event_source_unref(m
->signal_event_source
);
1359 sd_event_source_unref(m
->sigchld_event_source
);
1360 sd_event_source_unref(m
->notify_event_source
);
1361 sd_event_source_unref(m
->cgroups_agent_event_source
);
1362 sd_event_source_unref(m
->time_change_event_source
);
1363 sd_event_source_unref(m
->timezone_change_event_source
);
1364 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1365 sd_event_source_unref(m
->run_queue_event_source
);
1366 sd_event_source_unref(m
->user_lookup_event_source
);
1367 sd_event_source_unref(m
->sync_bus_names_event_source
);
1369 safe_close(m
->signal_fd
);
1370 safe_close(m
->notify_fd
);
1371 safe_close(m
->cgroups_agent_fd
);
1372 safe_close(m
->time_change_fd
);
1373 safe_close_pair(m
->user_lookup_fds
);
1375 manager_close_ask_password(m
);
1377 manager_close_idle_pipe(m
);
1379 sd_event_unref(m
->event
);
1381 free(m
->notify_socket
);
1383 lookup_paths_free(&m
->lookup_paths
);
1384 strv_free(m
->transient_environment
);
1385 strv_free(m
->client_environment
);
1387 hashmap_free(m
->cgroup_unit
);
1388 manager_free_unit_name_maps(m
);
1390 free(m
->switch_root
);
1391 free(m
->switch_root_init
);
1393 rlimit_free_all(m
->rlimit
);
1395 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1396 hashmap_free(m
->units_requiring_mounts_for
);
1398 hashmap_free(m
->uid_refs
);
1399 hashmap_free(m
->gid_refs
);
1401 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1402 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1407 static void manager_enumerate_perpetual(Manager
*m
) {
1412 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1415 /* Let's ask every type to load all units from disk/kernel that it might know */
1416 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1417 if (!unit_type_supported(c
)) {
1418 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1422 if (unit_vtable
[c
]->enumerate_perpetual
)
1423 unit_vtable
[c
]->enumerate_perpetual(m
);
1427 static void manager_enumerate(Manager
*m
) {
1432 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1435 /* Let's ask every type to load all units from disk/kernel that it might know */
1436 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1437 if (!unit_type_supported(c
)) {
1438 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1442 if (unit_vtable
[c
]->enumerate
)
1443 unit_vtable
[c
]->enumerate(m
);
1446 manager_dispatch_load_queue(m
);
1449 static void manager_coldplug(Manager
*m
) {
1457 log_debug("Invoking unit coldplug() handlers…");
1459 /* Let's place the units back into their deserialized state */
1460 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1462 /* ignore aliases */
1466 r
= unit_coldplug(u
);
1468 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1472 static void manager_catchup(Manager
*m
) {
1479 log_debug("Invoking unit catchup() handlers…");
1481 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1482 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1484 /* ignore aliases */
1492 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1498 HASHMAP_FOREACH(u
, m
->units
, i
) {
1500 if (fdset_size(fds
) <= 0)
1503 if (!UNIT_VTABLE(u
)->distribute_fds
)
1506 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1510 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1515 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1516 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1517 * rather than the current one. */
1519 if (MANAGER_IS_TEST_RUN(m
))
1522 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1525 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1528 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1531 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1537 static void manager_setup_bus(Manager
*m
) {
1540 /* Let's set up our private bus connection now, unconditionally */
1541 (void) bus_init_private(m
);
1543 /* If we are in --user mode also connect to the system bus now */
1544 if (MANAGER_IS_USER(m
))
1545 (void) bus_init_system(m
);
1547 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1548 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1549 (void) bus_init_api(m
);
1551 if (MANAGER_IS_SYSTEM(m
))
1552 (void) bus_init_system(m
);
1556 static void manager_preset_all(Manager
*m
) {
1561 if (m
->first_boot
<= 0)
1564 if (!MANAGER_IS_SYSTEM(m
))
1567 if (MANAGER_IS_TEST_RUN(m
))
1570 /* If this is the first boot, and we are in the host system, then preset everything */
1571 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1573 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1574 "Failed to populate /etc with preset unit settings, ignoring: %m");
1576 log_info("Populated /etc with preset unit settings.");
1579 static void manager_vacuum(Manager
*m
) {
1582 /* Release any dynamic users no longer referenced */
1583 dynamic_user_vacuum(m
, true);
1585 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1586 manager_vacuum_uid_refs(m
);
1587 manager_vacuum_gid_refs(m
);
1589 /* Release any runtimes no longer referenced */
1590 exec_runtime_vacuum(m
);
1593 static void manager_ready(Manager
*m
) {
1596 /* After having loaded everything, do the final round of catching up with what might have changed */
1598 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1600 /* It might be safe to log to the journal now and connect to dbus */
1601 manager_recheck_journal(m
);
1602 manager_recheck_dbus(m
);
1604 /* Sync current state of bus names with our set of listening units */
1605 (void) manager_enqueue_sync_bus_names(m
);
1607 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1610 m
->honor_device_enumeration
= true;
1613 static Manager
* manager_reloading_start(Manager
*m
) {
1617 static void manager_reloading_stopp(Manager
**m
) {
1619 assert((*m
)->n_reloading
> 0);
1620 (*m
)->n_reloading
--;
1624 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1629 /* If we are running in test mode, we still want to run the generators,
1630 * but we should not touch the real generator directories. */
1631 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1632 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1635 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1637 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1638 r
= manager_run_environment_generators(m
);
1640 r
= manager_run_generators(m
);
1641 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1645 manager_preset_all(m
);
1647 lookup_paths_log(&m
->lookup_paths
);
1650 /* This block is (optionally) done with the reloading counter bumped */
1651 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1653 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1654 * counter here already */
1656 reloading
= manager_reloading_start(m
);
1658 /* First, enumerate what we can from all config files */
1659 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1660 manager_enumerate_perpetual(m
);
1661 manager_enumerate(m
);
1662 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1664 /* Second, deserialize if there is something to deserialize */
1665 if (serialization
) {
1666 r
= manager_deserialize(m
, serialization
, fds
);
1668 return log_error_errno(r
, "Deserialization failed: %m");
1671 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1672 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1674 manager_distribute_fds(m
, fds
);
1676 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1677 r
= manager_setup_notify(m
);
1679 /* No sense to continue without notifications, our children would fail anyway. */
1682 r
= manager_setup_cgroups_agent(m
);
1684 /* Likewise, no sense to continue without empty cgroup notifications. */
1687 r
= manager_setup_user_lookup_fd(m
);
1689 /* This shouldn't fail, except if things are really broken. */
1692 /* Connect to the bus if we are good for it */
1693 manager_setup_bus(m
);
1695 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1696 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1698 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1699 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1701 /* Third, fire things up! */
1702 manager_coldplug(m
);
1704 /* Clean up runtime objects */
1708 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1709 * reload is finished */
1710 m
->send_reloading_done
= true;
1718 int manager_add_job(
1724 sd_bus_error
*error
,
1731 assert(type
< _JOB_TYPE_MAX
);
1733 assert(mode
< _JOB_MODE_MAX
);
1735 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1736 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1738 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1739 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1741 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1742 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1744 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1746 type
= job_type_collapse(type
, unit
);
1748 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1752 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1753 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1754 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1758 if (mode
== JOB_ISOLATE
) {
1759 r
= transaction_add_isolate_jobs(tr
, m
);
1764 if (mode
== JOB_TRIGGERING
) {
1765 r
= transaction_add_triggering_jobs(tr
, unit
);
1770 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1774 log_unit_debug(unit
,
1775 "Enqueued job %s/%s as %u", unit
->id
,
1776 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1779 *ret
= tr
->anchor_job
;
1781 transaction_free(tr
);
1785 transaction_abort(tr
);
1786 transaction_free(tr
);
1790 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1791 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1795 assert(type
< _JOB_TYPE_MAX
);
1797 assert(mode
< _JOB_MODE_MAX
);
1799 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1804 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1807 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1808 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1812 assert(type
< _JOB_TYPE_MAX
);
1814 assert(mode
< _JOB_MODE_MAX
);
1816 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1818 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1823 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1829 assert(mode
< _JOB_MODE_MAX
);
1830 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1832 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1836 /* We need an anchor job */
1837 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1841 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1842 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1844 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1848 transaction_free(tr
);
1852 transaction_abort(tr
);
1853 transaction_free(tr
);
1857 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1860 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1863 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1867 return hashmap_get(m
->units
, name
);
1870 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1875 static const UnitDependency deps
[] = {
1884 while ((u
= m
->target_deps_queue
)) {
1885 assert(u
->in_target_deps_queue
);
1887 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1888 u
->in_target_deps_queue
= false;
1890 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1895 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1896 r
= unit_add_default_target_dependency(u
, target
);
1906 unsigned manager_dispatch_load_queue(Manager
*m
) {
1912 /* Make sure we are not run recursively */
1913 if (m
->dispatching_load_queue
)
1916 m
->dispatching_load_queue
= true;
1918 /* Dispatches the load queue. Takes a unit from the queue and
1919 * tries to load its data until the queue is empty */
1921 while ((u
= m
->load_queue
)) {
1922 assert(u
->in_load_queue
);
1928 m
->dispatching_load_queue
= false;
1930 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1931 * should be loaded and have aliases resolved */
1932 (void) manager_dispatch_target_deps_queue(m
);
1937 int manager_load_unit_prepare(
1944 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1950 assert(name
|| path
);
1953 /* This will prepare the unit for loading, but not actually
1954 * load anything from disk. */
1956 if (path
&& !is_path(path
))
1957 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1960 name
= basename(path
);
1962 t
= unit_name_to_type(name
);
1964 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1965 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1966 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1968 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1971 ret
= manager_get_unit(m
, name
);
1977 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1982 ret
->fragment_path
= strdup(path
);
1983 if (!ret
->fragment_path
)
1987 r
= unit_add_name(ret
, name
);
1991 unit_add_to_load_queue(ret
);
1992 unit_add_to_dbus_queue(ret
);
1993 unit_add_to_gc_queue(ret
);
2001 int manager_load_unit(
2013 /* This will load the service information files, but not actually
2014 * start any services or anything. */
2016 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2020 manager_dispatch_load_queue(m
);
2022 *_ret
= unit_follow_merge(*_ret
);
2026 int manager_load_startable_unit_or_warn(
2032 /* Load a unit, make sure it loaded fully and is not masked. */
2034 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2038 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2040 return log_error_errno(r
, "Failed to load %s %s: %s",
2041 name
? "unit" : "unit file", name
?: path
,
2042 bus_error_message(&error
, r
));
2044 r
= bus_unit_validate_load_state(unit
, &error
);
2046 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2052 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2059 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2060 job_dump(j
, f
, prefix
);
2063 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2071 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2073 unit_dump(u
, f
, prefix
);
2076 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2082 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2083 const dual_timestamp
*t
= m
->timestamps
+ q
;
2084 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2086 if (dual_timestamp_is_set(t
))
2087 fprintf(f
, "%sTimestamp %s: %s\n",
2089 manager_timestamp_to_string(q
),
2090 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2091 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2094 manager_dump_units(m
, f
, prefix
);
2095 manager_dump_jobs(m
, f
, prefix
);
2098 int manager_get_dump_string(Manager
*m
, char **ret
) {
2099 _cleanup_free_
char *dump
= NULL
;
2100 _cleanup_fclose_
FILE *f
= NULL
;
2107 f
= open_memstream_unlocked(&dump
, &size
);
2111 manager_dump(m
, f
, NULL
);
2113 r
= fflush_and_check(f
);
2119 *ret
= TAKE_PTR(dump
);
2124 void manager_clear_jobs(Manager
*m
) {
2129 while ((j
= hashmap_first(m
->jobs
)))
2130 /* No need to recurse. We're cancelling all jobs. */
2131 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2134 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2137 /* First let's drop the unit keyed as "pid". */
2138 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2140 /* Then, let's also drop the array keyed by -pid. */
2141 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2144 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2145 Manager
*m
= userdata
;
2151 while ((j
= prioq_peek(m
->run_queue
))) {
2152 assert(j
->installed
);
2153 assert(j
->in_run_queue
);
2155 (void) job_run_and_invalidate(j
);
2158 if (m
->n_running_jobs
> 0)
2159 manager_watch_jobs_in_progress(m
);
2161 if (m
->n_on_console
> 0)
2162 manager_watch_idle_pipe(m
);
2167 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2168 unsigned n
= 0, budget
;
2174 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2175 * as we can. There's no point in throttling generation of signals in that case. */
2176 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2177 budget
= (unsigned) -1; /* infinite budget in this case */
2179 /* Anything to do at all? */
2180 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2183 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2184 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2185 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2188 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2189 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2190 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2191 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2192 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2193 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2194 * connections it will be counted five times. This difference in counting ("references"
2195 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2196 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2197 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2198 * currently chosen much higher than the "budget". */
2199 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2202 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2204 assert(u
->in_dbus_queue
);
2206 bus_unit_send_change_signal(u
);
2209 if (budget
!= (unsigned) -1)
2213 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2214 assert(j
->in_dbus_queue
);
2216 bus_job_send_change_signal(j
);
2219 if (budget
!= (unsigned) -1)
2223 if (m
->send_reloading_done
) {
2224 m
->send_reloading_done
= false;
2225 bus_manager_send_reloading(m
, false);
2229 if (m
->pending_reload_message
) {
2230 bus_send_pending_reload_message(m
);
2237 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2238 Manager
*m
= userdata
;
2242 n
= recv(fd
, buf
, sizeof(buf
), 0);
2244 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2246 log_error("Got zero-length cgroups agent message, ignoring.");
2249 if ((size_t) n
>= sizeof(buf
)) {
2250 log_error("Got overly long cgroups agent message, ignoring.");
2254 if (memchr(buf
, 0, n
)) {
2255 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2260 manager_notify_cgroup_empty(m
, buf
);
2261 (void) bus_forward_agent_released(m
, buf
);
2266 static void manager_invoke_notify_message(
2269 const struct ucred
*ucred
,
2278 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2280 u
->notifygen
= m
->notifygen
;
2282 if (UNIT_VTABLE(u
)->notify_message
) {
2283 _cleanup_strv_free_
char **tags
= NULL
;
2285 tags
= strv_split(buf
, NEWLINE
);
2291 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2293 } else if (DEBUG_LOGGING
) {
2294 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2296 x
= ellipsize(buf
, 20, 90);
2300 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2304 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2306 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2307 Manager
*m
= userdata
;
2308 char buf
[NOTIFY_BUFFER_MAX
+1];
2309 struct iovec iovec
= {
2311 .iov_len
= sizeof(buf
)-1,
2314 struct cmsghdr cmsghdr
;
2315 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2316 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2318 struct msghdr msghdr
= {
2321 .msg_control
= &control
,
2322 .msg_controllen
= sizeof(control
),
2325 struct cmsghdr
*cmsg
;
2326 struct ucred
*ucred
= NULL
;
2327 _cleanup_free_ Unit
**array_copy
= NULL
;
2328 Unit
*u1
, *u2
, **array
;
2329 int r
, *fd_array
= NULL
;
2335 assert(m
->notify_fd
== fd
);
2337 if (revents
!= EPOLLIN
) {
2338 log_warning("Got unexpected poll event for notify fd.");
2342 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2344 if (IN_SET(errno
, EAGAIN
, EINTR
))
2345 return 0; /* Spurious wakeup, try again */
2347 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2348 * won't take notification messages anymore, but that's still better than busy looping around this:
2349 * being woken up over and over again but being unable to actually read the message off the socket. */
2350 return log_error_errno(errno
, "Failed to receive notification message: %m");
2353 CMSG_FOREACH(cmsg
, &msghdr
) {
2354 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2356 fd_array
= (int*) CMSG_DATA(cmsg
);
2357 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2359 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2360 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2361 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2363 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2370 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2372 close_many(fd_array
, n_fds
);
2378 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2379 log_warning("Received notify message without valid credentials. Ignoring.");
2383 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2384 log_warning("Received notify message exceeded maximum size. Ignoring.");
2388 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2389 * trailing NUL byte in the message, but don't expect it. */
2390 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2391 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2395 /* Make sure it's NUL-terminated. */
2398 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2401 /* Notify every unit that might be interested, which might be multiple. */
2402 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2403 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2404 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2411 array_copy
= newdup(Unit
*, array
, k
+1);
2415 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2416 * make sure we only invoke each unit's handler once. */
2418 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2422 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2426 for (size_t i
= 0; array_copy
[i
]; i
++) {
2427 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2432 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2434 if (fdset_size(fds
) > 0)
2435 log_warning("Got extra auxiliary fds with notification message, closing them.");
2440 static void manager_invoke_sigchld_event(
2443 const siginfo_t
*si
) {
2449 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2450 if (u
->sigchldgen
== m
->sigchldgen
)
2452 u
->sigchldgen
= m
->sigchldgen
;
2454 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2455 unit_unwatch_pid(u
, si
->si_pid
);
2457 if (UNIT_VTABLE(u
)->sigchld_event
)
2458 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2461 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2462 Manager
*m
= userdata
;
2469 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2470 * while it is a zombie. */
2472 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2474 if (errno
!= ECHILD
)
2475 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2483 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2484 _cleanup_free_ Unit
**array_copy
= NULL
;
2485 _cleanup_free_
char *name
= NULL
;
2486 Unit
*u1
, *u2
, **array
;
2488 (void) get_process_comm(si
.si_pid
, &name
);
2490 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2491 si
.si_pid
, strna(name
),
2492 sigchld_code_to_string(si
.si_code
),
2494 strna(si
.si_code
== CLD_EXITED
2495 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2496 : signal_to_string(si
.si_status
)));
2498 /* Increase the generation counter used for filtering out duplicate unit invocations */
2501 /* And now figure out the unit this belongs to, it might be multiple... */
2502 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2503 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2504 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2508 /* Count how many entries the array has */
2512 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2513 array_copy
= newdup(Unit
*, array
, n
+1);
2518 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2519 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2520 * each iteration. */
2522 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2523 * We only do this for the cgroup the PID belonged to. */
2524 (void) unit_check_oom(u1
);
2526 manager_invoke_sigchld_event(m
, u1
, &si
);
2529 manager_invoke_sigchld_event(m
, u2
, &si
);
2531 for (size_t i
= 0; array_copy
[i
]; i
++)
2532 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2535 /* And now, we actually reap the zombie. */
2536 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2537 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2544 /* All children processed for now, turn off event source */
2546 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2548 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2553 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2554 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2557 log_debug("Activating special unit %s", name
);
2559 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2561 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2564 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2565 /* If the user presses C-A-D more than
2566 * 7 times within 2s, we reboot/shutdown immediately,
2567 * unless it was disabled in system.conf */
2569 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2570 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2572 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2573 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2576 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2577 Manager
*m
= userdata
;
2579 struct signalfd_siginfo sfsi
;
2583 assert(m
->signal_fd
== fd
);
2585 if (revents
!= EPOLLIN
) {
2586 log_warning("Got unexpected events from signal file descriptor.");
2590 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2591 if (n
!= sizeof(sfsi
)) {
2593 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2597 if (IN_SET(errno
, EINTR
, EAGAIN
))
2600 /* We return an error here, which will kill this handler,
2601 * to avoid a busy loop on read error. */
2602 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2605 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2606 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2607 ? LOG_DEBUG
: LOG_INFO
,
2610 switch (sfsi
.ssi_signo
) {
2613 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2615 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2620 if (MANAGER_IS_SYSTEM(m
)) {
2621 /* This is for compatibility with the original sysvinit */
2622 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2625 m
->objective
= MANAGER_REEXECUTE
;
2631 if (MANAGER_IS_SYSTEM(m
))
2632 manager_handle_ctrl_alt_del(m
);
2634 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2635 JOB_REPLACE_IRREVERSIBLY
);
2639 /* This is a nop on non-init */
2640 if (MANAGER_IS_SYSTEM(m
))
2641 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2646 /* This is a nop on non-init */
2647 if (MANAGER_IS_SYSTEM(m
))
2648 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2653 if (manager_dbus_is_running(m
, false)) {
2654 log_info("Trying to reconnect to bus...");
2656 (void) bus_init_api(m
);
2658 if (MANAGER_IS_SYSTEM(m
))
2659 (void) bus_init_system(m
);
2661 log_info("Starting D-Bus service...");
2662 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2668 _cleanup_free_
char *dump
= NULL
;
2670 r
= manager_get_dump_string(m
, &dump
);
2672 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2676 log_dump(LOG_INFO
, dump
);
2681 if (verify_run_space_and_log("Refusing to reload") < 0)
2684 m
->objective
= MANAGER_RELOAD
;
2689 /* Starting SIGRTMIN+0 */
2690 static const struct {
2693 } target_table
[] = {
2694 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2695 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2696 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2697 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2698 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2699 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2700 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2703 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2704 static const ManagerObjective objective_table
[] = {
2706 [1] = MANAGER_POWEROFF
,
2707 [2] = MANAGER_REBOOT
,
2708 [3] = MANAGER_KEXEC
,
2711 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2712 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2713 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2714 manager_start_target(m
, target_table
[idx
].target
,
2715 target_table
[idx
].mode
);
2719 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2720 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2721 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2725 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2728 manager_set_show_status(m
, SHOW_STATUS_YES
);
2732 manager_set_show_status(m
, SHOW_STATUS_NO
);
2736 manager_override_log_level(m
, LOG_DEBUG
);
2740 manager_restore_original_log_level(m
);
2744 if (MANAGER_IS_USER(m
)) {
2745 m
->objective
= MANAGER_EXIT
;
2749 /* This is a nop on init */
2753 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2754 manager_restore_original_log_target(m
);
2758 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2762 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2766 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2773 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2774 Manager
*m
= userdata
;
2779 assert(m
->time_change_fd
== fd
);
2781 log_struct(LOG_DEBUG
,
2782 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2783 LOG_MESSAGE("Time has been changed"));
2785 /* Restart the watch */
2786 (void) manager_setup_time_change(m
);
2788 HASHMAP_FOREACH(u
, m
->units
, i
)
2789 if (UNIT_VTABLE(u
)->time_change
)
2790 UNIT_VTABLE(u
)->time_change(u
);
2795 static int manager_dispatch_timezone_change(
2796 sd_event_source
*source
,
2797 const struct inotify_event
*e
,
2800 Manager
*m
= userdata
;
2807 log_debug("inotify event for /etc/localtime");
2809 changed
= manager_read_timezone_stat(m
);
2813 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2814 (void) manager_setup_timezone_change(m
);
2816 /* Read the new timezone */
2819 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2821 HASHMAP_FOREACH(u
, m
->units
, i
)
2822 if (UNIT_VTABLE(u
)->timezone_change
)
2823 UNIT_VTABLE(u
)->timezone_change(u
);
2828 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2829 Manager
*m
= userdata
;
2832 assert(m
->idle_pipe
[2] == fd
);
2834 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2835 * now turn off any further console output if there's at least one service that needs console access, so that
2836 * from now on our own output should not spill into that service's output anymore. After all, we support
2837 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2838 * exclusively without our interference. */
2839 m
->no_console_output
= m
->n_on_console
> 0;
2841 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2842 * by closing the pipes towards them, which is what they are waiting for. */
2843 manager_close_idle_pipe(m
);
2848 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2849 Manager
*m
= userdata
;
2856 manager_print_jobs_in_progress(m
);
2858 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2859 r
= sd_event_source_set_time(source
, next
);
2863 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2866 int manager_loop(Manager
*m
) {
2867 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2871 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2873 manager_check_finished(m
);
2875 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2876 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2878 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2880 while (m
->objective
== MANAGER_OK
) {
2883 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2886 if (!ratelimit_below(&rl
)) {
2887 /* Yay, something is going seriously wrong, pause a little */
2888 log_warning("Looping too fast. Throttling execution a little.");
2892 if (manager_dispatch_load_queue(m
) > 0)
2895 if (manager_dispatch_gc_job_queue(m
) > 0)
2898 if (manager_dispatch_gc_unit_queue(m
) > 0)
2901 if (manager_dispatch_cleanup_queue(m
) > 0)
2904 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2907 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2910 if (manager_dispatch_dbus_queue(m
) > 0)
2913 /* Sleep for half the watchdog time */
2914 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2915 wait_usec
= m
->runtime_watchdog
/ 2;
2919 wait_usec
= USEC_INFINITY
;
2921 r
= sd_event_run(m
->event
, wait_usec
);
2923 return log_error_errno(r
, "Failed to run event loop: %m");
2926 return m
->objective
;
2929 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2930 _cleanup_free_
char *n
= NULL
;
2931 sd_id128_t invocation_id
;
2939 r
= unit_name_from_dbus_path(s
, &n
);
2943 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2944 * as invocation ID. */
2945 r
= sd_id128_from_string(n
, &invocation_id
);
2947 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2953 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2954 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2955 SD_ID128_FORMAT_VAL(invocation_id
));
2958 /* If this didn't work, we check if this is a unit name */
2959 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2960 _cleanup_free_
char *nn
= NULL
;
2963 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2964 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2967 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2975 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2985 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2989 r
= safe_atou(p
, &id
);
2993 j
= manager_get_job(m
, id
);
3002 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3005 _cleanup_free_
char *p
= NULL
;
3009 if (!MANAGER_IS_SYSTEM(m
))
3012 audit_fd
= get_audit_fd();
3016 /* Don't generate audit events if the service was already
3017 * started and we're just deserializing */
3018 if (MANAGER_IS_RELOADING(m
))
3021 if (u
->type
!= UNIT_SERVICE
)
3024 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3026 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3030 msg
= strjoina("unit=", p
);
3031 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3033 /* We aren't allowed to send audit messages?
3034 * Then let's not retry again. */
3037 log_warning_errno(errno
, "Failed to send audit message: %m");
3043 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3044 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3045 _cleanup_free_
char *message
= NULL
;
3046 _cleanup_close_
int fd
= -1;
3049 /* Don't generate plymouth events if the service was already
3050 * started and we're just deserializing */
3051 if (MANAGER_IS_RELOADING(m
))
3054 if (!MANAGER_IS_SYSTEM(m
))
3057 if (detect_container() > 0)
3060 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3063 /* We set SOCK_NONBLOCK here so that we rather drop the
3064 * message then wait for plymouth */
3065 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3067 log_error_errno(errno
, "socket() failed: %m");
3071 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3072 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3073 log_error_errno(errno
, "connect() failed: %m");
3077 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3083 if (write(fd
, message
, n
+ 1) != n
+ 1)
3084 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3085 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3088 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3094 fd
= open_serialization_fd("systemd-state");
3098 f
= fdopen(fd
, "w+");
3108 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3113 /* The following timestamps only apply to the host system, hence only serialize them there */
3115 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3116 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3117 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3118 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3121 int manager_serialize(
3125 bool switching_root
) {
3137 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3139 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3140 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3141 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3142 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3143 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3144 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3145 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3147 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3148 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3150 t
= show_status_to_string(m
->show_status
);
3152 (void) serialize_item(f
, "show-status", t
);
3154 if (m
->log_level_overridden
)
3155 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3156 if (m
->log_target_overridden
)
3157 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3159 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3160 _cleanup_free_
char *joined
= NULL
;
3162 if (!manager_timestamp_shall_serialize(q
))
3165 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3169 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3172 if (!switching_root
)
3173 (void) serialize_strv(f
, "env", m
->client_environment
);
3175 if (m
->notify_fd
>= 0) {
3176 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3180 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3183 if (m
->cgroups_agent_fd
>= 0) {
3184 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3189 if (m
->user_lookup_fds
[0] >= 0) {
3192 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3194 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3196 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3198 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3200 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3203 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3205 r
= dynamic_user_serialize(m
, f
, fds
);
3209 manager_serialize_uid_refs(m
, f
);
3210 manager_serialize_gid_refs(m
, f
);
3212 r
= exec_runtime_serialize(m
, f
, fds
);
3216 (void) fputc('\n', f
);
3218 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3226 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3231 r
= fflush_and_check(f
);
3233 return log_error_errno(r
, "Failed to flush serialization: %m");
3235 r
= bus_fdset_add_all(m
, fds
);
3237 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3242 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3246 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3250 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3253 r
= unit_deserialize(u
, f
, fds
);
3257 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3263 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3264 const char *unit_name
;
3268 _cleanup_free_
char *line
= NULL
;
3270 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3272 return log_error_errno(r
, "Failed to read serialization line: %m");
3276 unit_name
= strstrip(line
);
3278 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3282 r
= unit_deserialize_skip(f
);
3291 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3297 log_debug("Deserializing state...");
3299 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3300 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3302 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3305 _cleanup_free_
char *line
= NULL
;
3306 const char *val
, *l
;
3308 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3310 return log_error_errno(r
, "Failed to read serialization line: %m");
3315 if (isempty(l
)) /* end marker */
3318 if ((val
= startswith(l
, "current-job-id="))) {
3321 if (safe_atou32(val
, &id
) < 0)
3322 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3324 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3326 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3329 if (safe_atou32(val
, &n
) < 0)
3330 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3332 m
->n_installed_jobs
+= n
;
3334 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3337 if (safe_atou32(val
, &n
) < 0)
3338 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3340 m
->n_failed_jobs
+= n
;
3342 } else if ((val
= startswith(l
, "taint-usr="))) {
3345 b
= parse_boolean(val
);
3347 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3349 m
->taint_usr
= m
->taint_usr
|| b
;
3351 } else if ((val
= startswith(l
, "ready-sent="))) {
3354 b
= parse_boolean(val
);
3356 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3358 m
->ready_sent
= m
->ready_sent
|| b
;
3360 } else if ((val
= startswith(l
, "taint-logged="))) {
3363 b
= parse_boolean(val
);
3365 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3367 m
->taint_logged
= m
->taint_logged
|| b
;
3369 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3372 b
= parse_boolean(val
);
3374 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3376 m
->service_watchdogs
= b
;
3378 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3381 b
= parse_boolean(val
);
3383 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3385 m
->honor_device_enumeration
= b
;
3387 } else if ((val
= startswith(l
, "show-status="))) {
3390 s
= show_status_from_string(val
);
3392 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3394 manager_set_show_status(m
, s
);
3396 } else if ((val
= startswith(l
, "log-level-override="))) {
3399 level
= log_level_from_string(val
);
3401 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3403 manager_override_log_level(m
, level
);
3405 } else if ((val
= startswith(l
, "log-target-override="))) {
3408 target
= log_target_from_string(val
);
3410 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3412 manager_override_log_target(m
, target
);
3414 } else if (startswith(l
, "env=")) {
3415 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3417 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3419 } else if ((val
= startswith(l
, "notify-fd="))) {
3422 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3423 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3425 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3426 safe_close(m
->notify_fd
);
3427 m
->notify_fd
= fdset_remove(fds
, fd
);
3430 } else if ((val
= startswith(l
, "notify-socket="))) {
3431 r
= free_and_strdup(&m
->notify_socket
, val
);
3435 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3438 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3439 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3441 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3442 safe_close(m
->cgroups_agent_fd
);
3443 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3446 } else if ((val
= startswith(l
, "user-lookup="))) {
3449 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3450 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3452 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3453 safe_close_pair(m
->user_lookup_fds
);
3454 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3455 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3458 } else if ((val
= startswith(l
, "dynamic-user=")))
3459 dynamic_user_deserialize_one(m
, val
, fds
);
3460 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3461 manager_deserialize_uid_refs_one(m
, val
);
3462 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3463 manager_deserialize_gid_refs_one(m
, val
);
3464 else if ((val
= startswith(l
, "exec-runtime=")))
3465 exec_runtime_deserialize_one(m
, val
, fds
);
3466 else if ((val
= startswith(l
, "subscribed="))) {
3468 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3474 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3475 val
= startswith(l
, manager_timestamp_to_string(q
));
3479 val
= startswith(val
, "-timestamp=");
3484 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3485 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3486 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3487 log_notice("Unknown serialization item '%s', ignoring.", l
);
3491 return manager_deserialize_units(m
, f
, fds
);
3494 int manager_reload(Manager
*m
) {
3495 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3496 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3497 _cleanup_fclose_
FILE *f
= NULL
;
3502 r
= manager_open_serialization(m
, &f
);
3504 return log_error_errno(r
, "Failed to create serialization file: %m");
3510 /* We are officially in reload mode from here on. */
3511 reloading
= manager_reloading_start(m
);
3513 r
= manager_serialize(m
, f
, fds
, false);
3517 if (fseeko(f
, 0, SEEK_SET
) < 0)
3518 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3520 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3523 bus_manager_send_reloading(m
, true);
3525 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3526 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3529 manager_clear_jobs_and_units(m
);
3530 lookup_paths_flush_generator(&m
->lookup_paths
);
3531 lookup_paths_free(&m
->lookup_paths
);
3532 exec_runtime_vacuum(m
);
3533 dynamic_user_vacuum(m
, false);
3534 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3535 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3537 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3539 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3541 (void) manager_run_environment_generators(m
);
3542 (void) manager_run_generators(m
);
3544 lookup_paths_log(&m
->lookup_paths
);
3546 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3547 manager_free_unit_name_maps(m
);
3549 /* First, enumerate what we can from kernel and suchlike */
3550 manager_enumerate_perpetual(m
);
3551 manager_enumerate(m
);
3553 /* Second, deserialize our stored data */
3554 r
= manager_deserialize(m
, f
, fds
);
3556 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3558 /* We don't need the serialization anymore */
3561 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3562 (void) manager_setup_notify(m
);
3563 (void) manager_setup_cgroups_agent(m
);
3564 (void) manager_setup_user_lookup_fd(m
);
3566 /* Third, fire things up! */
3567 manager_coldplug(m
);
3569 /* Clean up runtime objects no longer referenced */
3572 /* Consider the reload process complete now. */
3573 assert(m
->n_reloading
> 0);
3576 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3577 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3578 * let's always set the flag here for safety. */
3579 m
->honor_device_enumeration
= true;
3583 m
->send_reloading_done
= true;
3587 void manager_reset_failed(Manager
*m
) {
3593 HASHMAP_FOREACH(u
, m
->units
, i
)
3594 unit_reset_failed(u
);
3597 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3603 /* Returns true if the unit is inactive or going down */
3604 u
= manager_get_unit(m
, name
);
3608 return unit_inactive_or_pending(u
);
3611 static void log_taint_string(Manager
*m
) {
3612 _cleanup_free_
char *taint
= NULL
;
3616 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3619 m
->taint_logged
= true; /* only check for taint once */
3621 taint
= manager_taint_string(m
);
3625 log_struct(LOG_NOTICE
,
3626 LOG_MESSAGE("System is tainted: %s", taint
),
3628 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3631 static void manager_notify_finished(Manager
*m
) {
3632 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3633 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3635 if (MANAGER_IS_TEST_RUN(m
))
3638 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3639 char ts
[FORMAT_TIMESPAN_MAX
];
3640 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3643 size_t size
= sizeof buf
;
3645 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3646 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3647 * negative values. */
3649 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3650 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3651 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3652 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3654 if (firmware_usec
> 0)
3655 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3656 if (loader_usec
> 0)
3657 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3659 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3661 /* The initrd case on bare-metal*/
3662 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3663 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3665 log_struct(LOG_INFO
,
3666 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3667 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3668 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3669 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3670 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3672 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3673 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3674 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3675 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3677 /* The initrd-less case on bare-metal*/
3679 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3682 log_struct(LOG_INFO
,
3683 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3684 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3685 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3686 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3688 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3689 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3690 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3693 /* The container and --user case */
3694 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3695 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3697 log_struct(LOG_INFO
,
3698 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3699 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3700 LOG_MESSAGE("Startup finished in %s.",
3701 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3704 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3707 m
->ready_sent
? "STATUS=Startup finished in %s."
3709 "STATUS=Startup finished in %s.",
3710 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3711 m
->ready_sent
= true;
3713 log_taint_string(m
);
3716 static void manager_send_ready(Manager
*m
) {
3719 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3720 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3723 m
->ready_sent
= true;
3727 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3730 static void manager_check_basic_target(Manager
*m
) {
3735 /* Small shortcut */
3736 if (m
->ready_sent
&& m
->taint_logged
)
3739 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3740 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3743 /* For user managers, send out READY=1 as soon as we reach basic.target */
3744 manager_send_ready(m
);
3746 /* Log the taint string as soon as we reach basic.target */
3747 log_taint_string(m
);
3750 void manager_check_finished(Manager
*m
) {
3753 if (MANAGER_IS_RELOADING(m
))
3756 /* Verify that we have entered the event loop already, and not left it again. */
3757 if (!MANAGER_IS_RUNNING(m
))
3760 manager_check_basic_target(m
);
3762 if (hashmap_size(m
->jobs
) > 0) {
3763 if (m
->jobs_in_progress_event_source
)
3764 /* Ignore any failure, this is only for feedback */
3765 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3770 manager_flip_auto_status(m
, false);
3772 /* Notify Type=idle units that we are done now */
3773 manager_close_idle_pipe(m
);
3775 /* Turn off confirm spawn now */
3776 m
->confirm_spawn
= NULL
;
3778 /* No need to update ask password status when we're going non-interactive */
3779 manager_close_ask_password(m
);
3781 /* This is no longer the first boot */
3782 manager_set_first_boot(m
, false);
3784 if (MANAGER_IS_FINISHED(m
))
3787 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3789 manager_notify_finished(m
);
3791 manager_invalidate_startup_units(m
);
3794 static bool generator_path_any(const char* const* paths
) {
3798 /* Optimize by skipping the whole process by not creating output directories
3799 * if no generators are found. */
3800 STRV_FOREACH(path
, (char**) paths
)
3801 if (access(*path
, F_OK
) == 0)
3803 else if (errno
!= ENOENT
)
3804 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3809 static const char *const system_env_generator_binary_paths
[] = {
3810 "/run/systemd/system-environment-generators",
3811 "/etc/systemd/system-environment-generators",
3812 "/usr/local/lib/systemd/system-environment-generators",
3813 SYSTEM_ENV_GENERATOR_PATH
,
3817 static const char *const user_env_generator_binary_paths
[] = {
3818 "/run/systemd/user-environment-generators",
3819 "/etc/systemd/user-environment-generators",
3820 "/usr/local/lib/systemd/user-environment-generators",
3821 USER_ENV_GENERATOR_PATH
,
3825 static int manager_run_environment_generators(Manager
*m
) {
3826 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3827 const char *const *paths
;
3829 [STDOUT_GENERATE
] = &tmp
,
3830 [STDOUT_COLLECT
] = &tmp
,
3831 [STDOUT_CONSUME
] = &m
->transient_environment
,
3835 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3838 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3840 if (!generator_path_any(paths
))
3843 RUN_WITH_UMASK(0022)
3844 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3845 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3849 static int manager_run_generators(Manager
*m
) {
3850 _cleanup_strv_free_
char **paths
= NULL
;
3851 const char *argv
[5];
3856 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3859 paths
= generator_binary_paths(m
->unit_file_scope
);
3863 if (!generator_path_any((const char* const*) paths
))
3866 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3868 log_error_errno(r
, "Failed to create generator directories: %m");
3872 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3873 argv
[1] = m
->lookup_paths
.generator
;
3874 argv
[2] = m
->lookup_paths
.generator_early
;
3875 argv
[3] = m
->lookup_paths
.generator_late
;
3878 RUN_WITH_UMASK(0022)
3879 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3880 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3885 lookup_paths_trim_generator(&m
->lookup_paths
);
3889 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3894 if (strv_isempty(plus
))
3897 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3901 sanitize_environment(a
);
3903 return strv_free_and_replace(m
->transient_environment
, a
);
3906 int manager_client_environment_modify(
3911 char **a
= NULL
, **b
= NULL
, **l
;
3915 if (strv_isempty(minus
) && strv_isempty(plus
))
3918 l
= m
->client_environment
;
3920 if (!strv_isempty(minus
)) {
3921 a
= strv_env_delete(l
, 1, minus
);
3928 if (!strv_isempty(plus
)) {
3929 b
= strv_env_merge(2, l
, plus
);
3938 if (m
->client_environment
!= l
)
3939 strv_free(m
->client_environment
);
3946 m
->client_environment
= sanitize_environment(l
);
3950 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3956 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3964 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3969 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3970 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3972 if (!default_rlimit
[i
])
3975 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3983 void manager_recheck_dbus(Manager
*m
) {
3986 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3987 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3988 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3989 * while in the user instance we can assume it's already there. */
3991 if (MANAGER_IS_RELOADING(m
))
3992 return; /* don't check while we are reloading… */
3994 if (manager_dbus_is_running(m
, false)) {
3995 (void) bus_init_api(m
);
3997 if (MANAGER_IS_SYSTEM(m
))
3998 (void) bus_init_system(m
);
4000 (void) bus_done_api(m
);
4002 if (MANAGER_IS_SYSTEM(m
))
4003 (void) bus_done_system(m
);
4007 static bool manager_journal_is_running(Manager
*m
) {
4012 if (MANAGER_IS_TEST_RUN(m
))
4015 /* If we are the user manager we can safely assume that the journal is up */
4016 if (!MANAGER_IS_SYSTEM(m
))
4019 /* Check that the socket is not only up, but in RUNNING state */
4020 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4023 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4026 /* Similar, check if the daemon itself is fully up, too */
4027 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4030 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4036 void disable_printk_ratelimit(void) {
4037 /* Disable kernel's printk ratelimit.
4039 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4040 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4041 * setting takes precedence. */
4044 r
= sysctl_write("kernel/printk_devkmsg", "on");
4046 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4049 void manager_recheck_journal(Manager
*m
) {
4053 /* Don't bother with this unless we are in the special situation of being PID 1 */
4054 if (getpid_cached() != 1)
4057 /* Don't check this while we are reloading, things might still change */
4058 if (MANAGER_IS_RELOADING(m
))
4061 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4062 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4063 * an activation ourselves we can't fulfill. */
4064 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4068 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4070 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4072 if (!MANAGER_IS_SYSTEM(m
))
4075 if (m
->show_status
!= mode
)
4076 log_debug("%s showing of status.",
4077 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4078 m
->show_status
= mode
;
4080 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4081 (void) touch("/run/systemd/show-status");
4083 (void) unlink("/run/systemd/show-status");
4086 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4089 if (!MANAGER_IS_SYSTEM(m
))
4092 if (m
->no_console_output
)
4095 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4098 /* If we cannot find out the status properly, just proceed. */
4099 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4102 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4105 const char *manager_get_confirm_spawn(Manager
*m
) {
4106 static int last_errno
= 0;
4112 /* Here's the deal: we want to test the validity of the console but don't want
4113 * PID1 to go through the whole console process which might block. But we also
4114 * want to warn the user only once if something is wrong with the console so we
4115 * cannot do the sanity checks after spawning our children. So here we simply do
4116 * really basic tests to hopefully trap common errors.
4118 * If the console suddenly disappear at the time our children will really it
4119 * then they will simply fail to acquire it and a positive answer will be
4120 * assumed. New children will fallback to /dev/console though.
4122 * Note: TTYs are devices that can come and go any time, and frequently aren't
4123 * available yet during early boot (consider a USB rs232 dongle...). If for any
4124 * reason the configured console is not ready, we fallback to the default
4127 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4128 return m
->confirm_spawn
;
4130 if (stat(m
->confirm_spawn
, &st
) < 0) {
4135 if (!S_ISCHR(st
.st_mode
)) {
4141 return m
->confirm_spawn
;
4144 if (last_errno
!= r
)
4145 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4147 return "/dev/console";
4150 void manager_set_first_boot(Manager
*m
, bool b
) {
4153 if (!MANAGER_IS_SYSTEM(m
))
4156 if (m
->first_boot
!= (int) b
) {
4158 (void) touch("/run/systemd/first-boot");
4160 (void) unlink("/run/systemd/first-boot");
4166 void manager_disable_confirm_spawn(void) {
4167 (void) touch("/run/systemd/confirm_spawn_disabled");
4170 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4171 if (!m
->confirm_spawn
)
4174 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4177 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4180 /* If m is NULL, assume we're after shutdown and let the messages through. */
4182 if (m
&& !manager_get_show_status(m
, type
))
4185 /* XXX We should totally drop the check for ephemeral here
4186 * and thus effectively make 'Type=idle' pointless. */
4187 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4190 va_start(ap
, format
);
4191 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4195 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4196 char p
[strlen(path
)+1];
4202 path_simplify(p
, false);
4204 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4207 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4212 assert(u
->manager
== m
);
4214 size
= set_size(m
->failed_units
);
4217 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4221 if (set_put(m
->failed_units
, u
) < 0)
4224 (void) set_remove(m
->failed_units
, u
);
4226 if (set_size(m
->failed_units
) != size
)
4227 bus_manager_send_change_signal(m
);
4232 ManagerState
manager_state(Manager
*m
) {
4237 /* Did we ever finish booting? If not then we are still starting up */
4238 if (!MANAGER_IS_FINISHED(m
)) {
4240 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4241 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4242 return MANAGER_INITIALIZING
;
4244 return MANAGER_STARTING
;
4247 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4248 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4249 if (u
&& unit_active_or_pending(u
))
4250 return MANAGER_STOPPING
;
4252 if (MANAGER_IS_SYSTEM(m
)) {
4253 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4254 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4255 if (u
&& unit_active_or_pending(u
))
4256 return MANAGER_MAINTENANCE
;
4258 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4259 if (u
&& unit_active_or_pending(u
))
4260 return MANAGER_MAINTENANCE
;
4263 /* Are there any failed units? If so, we are in degraded mode */
4264 if (set_size(m
->failed_units
) > 0)
4265 return MANAGER_DEGRADED
;
4267 return MANAGER_RUNNING
;
4270 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4272 static void manager_unref_uid_internal(
4277 int (*_clean_ipc
)(uid_t uid
)) {
4283 assert(uid_is_valid(uid
));
4286 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4287 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4289 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4290 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4291 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4292 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4294 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4295 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4297 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4300 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4302 n
= c
& ~DESTROY_IPC_FLAG
;
4306 if (destroy_now
&& n
== 0) {
4307 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4309 if (c
& DESTROY_IPC_FLAG
) {
4310 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4311 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4313 (void) _clean_ipc(uid
);
4316 c
= n
| (c
& DESTROY_IPC_FLAG
);
4317 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4321 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4322 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4325 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4326 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4329 static int manager_ref_uid_internal(
4340 assert(uid_is_valid(uid
));
4342 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4343 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4345 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4346 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4348 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4351 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4355 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4357 n
= c
& ~DESTROY_IPC_FLAG
;
4360 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4363 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4365 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4368 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4369 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4372 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4373 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4376 static void manager_vacuum_uid_refs_internal(
4379 int (*_clean_ipc
)(uid_t uid
)) {
4388 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4392 uid
= PTR_TO_UID(k
);
4393 c
= PTR_TO_UINT32(p
);
4395 n
= c
& ~DESTROY_IPC_FLAG
;
4399 if (c
& DESTROY_IPC_FLAG
) {
4400 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4401 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4403 (void) _clean_ipc(uid
);
4406 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4410 void manager_vacuum_uid_refs(Manager
*m
) {
4411 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4414 void manager_vacuum_gid_refs(Manager
*m
) {
4415 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4418 static void manager_serialize_uid_refs_internal(
4422 const char *field_name
) {
4432 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4433 * of it is better rebuild after a reload/reexec. */
4435 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4439 uid
= PTR_TO_UID(k
);
4440 c
= PTR_TO_UINT32(p
);
4442 if (!(c
& DESTROY_IPC_FLAG
))
4445 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4449 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4450 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4453 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4454 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4457 static void manager_deserialize_uid_refs_one_internal(
4460 const char *value
) {
4470 r
= parse_uid(value
, &uid
);
4471 if (r
< 0 || uid
== 0) {
4472 log_debug("Unable to parse UID reference serialization");
4476 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4482 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4483 if (c
& DESTROY_IPC_FLAG
)
4486 c
|= DESTROY_IPC_FLAG
;
4488 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4490 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4495 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4496 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4499 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4500 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4503 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4507 char unit_name
[UNIT_NAME_MAX
+1];
4510 Manager
*m
= userdata
;
4518 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4519 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4520 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4522 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4524 if (IN_SET(errno
, EINTR
, EAGAIN
))
4527 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4530 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4531 log_warning("Received too short user lookup message, ignoring.");
4535 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4536 log_warning("Received too long user lookup message, ignoring.");
4540 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4541 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4545 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4546 if (memchr(buffer
.unit_name
, 0, n
)) {
4547 log_warning("Received lookup message with embedded NUL character, ignoring.");
4551 buffer
.unit_name
[n
] = 0;
4552 u
= manager_get_unit(m
, buffer
.unit_name
);
4554 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4558 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4560 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4564 char *manager_taint_string(Manager
*m
) {
4565 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4569 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4570 * Only things that are detected at runtime should be tagged
4571 * here. For stuff that is set during compilation, emit a warning
4572 * in the configuration phase. */
4576 buf
= new(char, sizeof("split-usr:"
4580 "overflowuid-not-65534:"
4581 "overflowgid-not-65534:"));
4589 e
= stpcpy(e
, "split-usr:");
4591 if (access("/proc/cgroups", F_OK
) < 0)
4592 e
= stpcpy(e
, "cgroups-missing:");
4594 if (clock_is_localtime(NULL
) > 0)
4595 e
= stpcpy(e
, "local-hwclock:");
4597 r
= readlink_malloc("/var/run", &destination
);
4598 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4599 e
= stpcpy(e
, "var-run-bad:");
4601 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4602 if (r
>= 0 && !streq(overflowuid
, "65534"))
4603 e
= stpcpy(e
, "overflowuid-not-65534:");
4605 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4606 if (r
>= 0 && !streq(overflowgid
, "65534"))
4607 e
= stpcpy(e
, "overflowgid-not-65534:");
4609 /* remove the last ':' */
4616 void manager_ref_console(Manager
*m
) {
4622 void manager_unref_console(Manager
*m
) {
4624 assert(m
->n_on_console
> 0);
4627 if (m
->n_on_console
== 0)
4628 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4631 void manager_override_log_level(Manager
*m
, int level
) {
4632 _cleanup_free_
char *s
= NULL
;
4635 if (!m
->log_level_overridden
) {
4636 m
->original_log_level
= log_get_max_level();
4637 m
->log_level_overridden
= true;
4640 (void) log_level_to_string_alloc(level
, &s
);
4641 log_info("Setting log level to %s.", strna(s
));
4643 log_set_max_level(level
);
4646 void manager_restore_original_log_level(Manager
*m
) {
4647 _cleanup_free_
char *s
= NULL
;
4650 if (!m
->log_level_overridden
)
4653 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4654 log_info("Restoring log level to original (%s).", strna(s
));
4656 log_set_max_level(m
->original_log_level
);
4657 m
->log_level_overridden
= false;
4660 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4663 if (!m
->log_target_overridden
) {
4664 m
->original_log_target
= log_get_target();
4665 m
->log_target_overridden
= true;
4668 log_info("Setting log target to %s.", log_target_to_string(target
));
4669 log_set_target(target
);
4672 void manager_restore_original_log_target(Manager
*m
) {
4675 if (!m
->log_target_overridden
)
4678 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4680 log_set_target(m
->original_log_target
);
4681 m
->log_target_overridden
= false;
4684 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4686 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4687 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4688 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4692 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4693 [MANAGER_INITIALIZING
] = "initializing",
4694 [MANAGER_STARTING
] = "starting",
4695 [MANAGER_RUNNING
] = "running",
4696 [MANAGER_DEGRADED
] = "degraded",
4697 [MANAGER_MAINTENANCE
] = "maintenance",
4698 [MANAGER_STOPPING
] = "stopping",
4701 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4703 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4704 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4705 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4706 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4707 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4708 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4709 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4710 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4711 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4712 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4713 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4714 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4715 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4716 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4717 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4718 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4719 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4720 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4721 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4724 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4726 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4727 [OOM_CONTINUE
] = "continue",
4728 [OOM_STOP
] = "stop",
4729 [OOM_KILL
] = "kill",
4732 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);