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 (test_run_flags
== 0) {
885 if (MANAGER_IS_SYSTEM(m
))
886 r
= mkdir_label("/run/systemd/units", 0755);
888 _cleanup_free_
char *units_path
= NULL
;
889 r
= xdg_user_runtime_dir(&units_path
, "/systemd/units");
892 r
= mkdir_p_label(units_path
, 0755);
895 if (r
< 0 && r
!= -EEXIST
)
901 dir_is_empty("/usr") > 0;
903 /* Note that we do not set up the notify fd here. We do that after deserialization,
904 * since they might have gotten serialized across the reexec. */
911 static int manager_setup_notify(Manager
*m
) {
914 if (MANAGER_IS_TEST_RUN(m
))
917 if (m
->notify_fd
< 0) {
918 _cleanup_close_
int fd
= -1;
919 union sockaddr_union sa
= {};
922 /* First free all secondary fields */
923 m
->notify_socket
= mfree(m
->notify_socket
);
924 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
926 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
928 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
930 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
932 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
933 if (!m
->notify_socket
)
936 salen
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
938 return log_error_errno(salen
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", m
->notify_socket
);
940 (void) mkdir_parents_label(m
->notify_socket
, 0755);
941 (void) sockaddr_un_unlink(&sa
.un
);
943 r
= bind(fd
, &sa
.sa
, salen
);
945 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
947 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
949 return log_error_errno(r
, "SO_PASSCRED failed: %m");
951 m
->notify_fd
= TAKE_FD(fd
);
953 log_debug("Using notification socket %s", m
->notify_socket
);
956 if (!m
->notify_event_source
) {
957 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
959 return log_error_errno(r
, "Failed to allocate notify event source: %m");
961 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
962 * service an exit message belongs. */
963 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
965 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
967 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
973 static int manager_setup_cgroups_agent(Manager
*m
) {
975 static const union sockaddr_union sa
= {
976 .un
.sun_family
= AF_UNIX
,
977 .un
.sun_path
= "/run/systemd/cgroups-agent",
981 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
982 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
983 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
984 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
985 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
986 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
987 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
988 * we thus won't lose messages.
990 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
991 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
992 * bus for these messages. */
994 if (MANAGER_IS_TEST_RUN(m
))
997 if (!MANAGER_IS_SYSTEM(m
))
1000 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
1002 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
1003 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
1006 if (m
->cgroups_agent_fd
< 0) {
1007 _cleanup_close_
int fd
= -1;
1009 /* First free all secondary fields */
1010 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1012 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1014 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1016 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1018 (void) sockaddr_un_unlink(&sa
.un
);
1020 /* Only allow root to connect to this socket */
1021 RUN_WITH_UMASK(0077)
1022 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1024 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1026 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1029 if (!m
->cgroups_agent_event_source
) {
1030 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1032 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1034 /* Process cgroups notifications early. Note that when the agent notification is received
1035 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1036 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1037 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1039 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1041 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1047 static int manager_setup_user_lookup_fd(Manager
*m
) {
1052 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1053 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1054 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1055 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1056 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1057 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1058 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1059 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1062 * You might wonder why we need a communication channel for this that is independent of the usual notification
1063 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1064 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1065 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1067 * Note that this function is called under two circumstances: when we first initialize (in which case we
1068 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1069 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1071 if (m
->user_lookup_fds
[0] < 0) {
1073 /* Free all secondary fields */
1074 safe_close_pair(m
->user_lookup_fds
);
1075 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1077 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1078 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1080 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1083 if (!m
->user_lookup_event_source
) {
1084 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1086 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1088 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1090 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1092 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1094 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1100 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1106 while ((u
= m
->cleanup_queue
)) {
1107 assert(u
->in_cleanup_queue
);
1117 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1118 GC_OFFSET_UNSURE
, /* No clue */
1119 GC_OFFSET_GOOD
, /* We still need this unit */
1120 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1124 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1129 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1131 /* Recursively mark referenced units as GOOD as well */
1132 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1133 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1134 unit_gc_mark_good(other
, gc_marker
);
1137 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1145 if (IN_SET(u
->gc_marker
- gc_marker
,
1146 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1149 if (u
->in_cleanup_queue
)
1152 if (!unit_may_gc(u
))
1155 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1159 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1160 unit_gc_sweep(other
, gc_marker
);
1162 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1165 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1169 if (u
->refs_by_target
) {
1172 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1173 unit_gc_sweep(ref
->source
, gc_marker
);
1175 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1178 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1186 /* We were unable to find anything out about this entry, so
1187 * let's investigate it later */
1188 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1189 unit_add_to_gc_queue(u
);
1193 /* We definitely know that this one is not useful anymore, so
1194 * let's mark it for deletion */
1195 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1196 unit_add_to_cleanup_queue(u
);
1200 unit_gc_mark_good(u
, gc_marker
);
1203 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1204 unsigned n
= 0, gc_marker
;
1209 /* log_debug("Running GC..."); */
1211 m
->gc_marker
+= _GC_OFFSET_MAX
;
1212 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1215 gc_marker
= m
->gc_marker
;
1217 while ((u
= m
->gc_unit_queue
)) {
1218 assert(u
->in_gc_queue
);
1220 unit_gc_sweep(u
, gc_marker
);
1222 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1223 u
->in_gc_queue
= false;
1227 if (IN_SET(u
->gc_marker
- gc_marker
,
1228 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1230 log_unit_debug(u
, "Collecting.");
1231 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1232 unit_add_to_cleanup_queue(u
);
1239 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1245 while ((j
= m
->gc_job_queue
)) {
1246 assert(j
->in_gc_queue
);
1248 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1249 j
->in_gc_queue
= false;
1256 log_unit_debug(j
->unit
, "Collecting job.");
1257 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1263 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1270 while ((u
= m
->stop_when_unneeded_queue
)) {
1271 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1272 assert(m
->stop_when_unneeded_queue
);
1274 assert(u
->in_stop_when_unneeded_queue
);
1275 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1276 u
->in_stop_when_unneeded_queue
= false;
1280 if (!unit_is_unneeded(u
))
1283 log_unit_debug(u
, "Unit is not needed anymore.");
1285 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1286 * service being unnecessary after a while. */
1288 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1289 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1293 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1294 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1296 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1302 static void manager_clear_jobs_and_units(Manager
*m
) {
1307 while ((u
= hashmap_first(m
->units
)))
1310 manager_dispatch_cleanup_queue(m
);
1312 assert(!m
->load_queue
);
1313 assert(prioq_isempty(m
->run_queue
));
1314 assert(!m
->dbus_unit_queue
);
1315 assert(!m
->dbus_job_queue
);
1316 assert(!m
->cleanup_queue
);
1317 assert(!m
->gc_unit_queue
);
1318 assert(!m
->gc_job_queue
);
1319 assert(!m
->stop_when_unneeded_queue
);
1321 assert(hashmap_isempty(m
->jobs
));
1322 assert(hashmap_isempty(m
->units
));
1324 m
->n_on_console
= 0;
1325 m
->n_running_jobs
= 0;
1326 m
->n_installed_jobs
= 0;
1327 m
->n_failed_jobs
= 0;
1330 Manager
* manager_free(Manager
*m
) {
1331 ExecDirectoryType dt
;
1337 manager_clear_jobs_and_units(m
);
1339 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1340 if (unit_vtable
[c
]->shutdown
)
1341 unit_vtable
[c
]->shutdown(m
);
1343 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1344 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1346 lookup_paths_flush_generator(&m
->lookup_paths
);
1350 exec_runtime_vacuum(m
);
1351 hashmap_free(m
->exec_runtime_by_id
);
1353 dynamic_user_vacuum(m
, false);
1354 hashmap_free(m
->dynamic_users
);
1356 hashmap_free(m
->units
);
1357 hashmap_free(m
->units_by_invocation_id
);
1358 hashmap_free(m
->jobs
);
1359 hashmap_free(m
->watch_pids
);
1360 hashmap_free(m
->watch_bus
);
1362 prioq_free(m
->run_queue
);
1364 set_free(m
->startup_units
);
1365 set_free(m
->failed_units
);
1367 sd_event_source_unref(m
->signal_event_source
);
1368 sd_event_source_unref(m
->sigchld_event_source
);
1369 sd_event_source_unref(m
->notify_event_source
);
1370 sd_event_source_unref(m
->cgroups_agent_event_source
);
1371 sd_event_source_unref(m
->time_change_event_source
);
1372 sd_event_source_unref(m
->timezone_change_event_source
);
1373 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1374 sd_event_source_unref(m
->run_queue_event_source
);
1375 sd_event_source_unref(m
->user_lookup_event_source
);
1377 safe_close(m
->signal_fd
);
1378 safe_close(m
->notify_fd
);
1379 safe_close(m
->cgroups_agent_fd
);
1380 safe_close(m
->time_change_fd
);
1381 safe_close_pair(m
->user_lookup_fds
);
1383 manager_close_ask_password(m
);
1385 manager_close_idle_pipe(m
);
1387 sd_event_unref(m
->event
);
1389 free(m
->notify_socket
);
1391 lookup_paths_free(&m
->lookup_paths
);
1392 strv_free(m
->transient_environment
);
1393 strv_free(m
->client_environment
);
1395 hashmap_free(m
->cgroup_unit
);
1396 manager_free_unit_name_maps(m
);
1398 free(m
->switch_root
);
1399 free(m
->switch_root_init
);
1401 rlimit_free_all(m
->rlimit
);
1403 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1404 hashmap_free(m
->units_requiring_mounts_for
);
1406 hashmap_free(m
->uid_refs
);
1407 hashmap_free(m
->gid_refs
);
1409 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1410 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1415 static void manager_enumerate_perpetual(Manager
*m
) {
1420 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1423 /* Let's ask every type to load all units from disk/kernel that it might know */
1424 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1425 if (!unit_type_supported(c
)) {
1426 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1430 if (unit_vtable
[c
]->enumerate_perpetual
)
1431 unit_vtable
[c
]->enumerate_perpetual(m
);
1435 static void manager_enumerate(Manager
*m
) {
1440 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1443 /* Let's ask every type to load all units from disk/kernel that it might know */
1444 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1445 if (!unit_type_supported(c
)) {
1446 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1450 if (unit_vtable
[c
]->enumerate
)
1451 unit_vtable
[c
]->enumerate(m
);
1454 manager_dispatch_load_queue(m
);
1457 static void manager_coldplug(Manager
*m
) {
1465 log_debug("Invoking unit coldplug() handlers…");
1467 /* Let's place the units back into their deserialized state */
1468 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1470 /* ignore aliases */
1474 r
= unit_coldplug(u
);
1476 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1480 static void manager_catchup(Manager
*m
) {
1487 log_debug("Invoking unit catchup() handlers…");
1489 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1490 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1492 /* ignore aliases */
1500 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1506 HASHMAP_FOREACH(u
, m
->units
, i
) {
1508 if (fdset_size(fds
) <= 0)
1511 if (!UNIT_VTABLE(u
)->distribute_fds
)
1514 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1518 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1523 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1524 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1525 * rather than the current one. */
1527 if (MANAGER_IS_TEST_RUN(m
))
1530 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1533 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1536 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1539 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1545 static void manager_setup_bus(Manager
*m
) {
1548 /* Let's set up our private bus connection now, unconditionally */
1549 (void) bus_init_private(m
);
1551 /* If we are in --user mode also connect to the system bus now */
1552 if (MANAGER_IS_USER(m
))
1553 (void) bus_init_system(m
);
1555 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1556 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1557 (void) bus_init_api(m
);
1559 if (MANAGER_IS_SYSTEM(m
))
1560 (void) bus_init_system(m
);
1564 static void manager_preset_all(Manager
*m
) {
1569 if (m
->first_boot
<= 0)
1572 if (!MANAGER_IS_SYSTEM(m
))
1575 if (MANAGER_IS_TEST_RUN(m
))
1578 /* If this is the first boot, and we are in the host system, then preset everything */
1579 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1581 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1582 "Failed to populate /etc with preset unit settings, ignoring: %m");
1584 log_info("Populated /etc with preset unit settings.");
1587 static void manager_vacuum(Manager
*m
) {
1590 /* Release any dynamic users no longer referenced */
1591 dynamic_user_vacuum(m
, true);
1593 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1594 manager_vacuum_uid_refs(m
);
1595 manager_vacuum_gid_refs(m
);
1597 /* Release any runtimes no longer referenced */
1598 exec_runtime_vacuum(m
);
1601 static void manager_ready(Manager
*m
) {
1604 /* After having loaded everything, do the final round of catching up with what might have changed */
1606 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1608 /* It might be safe to log to the journal now and connect to dbus */
1609 manager_recheck_journal(m
);
1610 manager_recheck_dbus(m
);
1612 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1615 m
->honor_device_enumeration
= true;
1618 static Manager
* manager_reloading_start(Manager
*m
) {
1622 static void manager_reloading_stopp(Manager
**m
) {
1624 assert((*m
)->n_reloading
> 0);
1625 (*m
)->n_reloading
--;
1629 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1634 /* If we are running in test mode, we still want to run the generators,
1635 * but we should not touch the real generator directories. */
1636 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1637 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1640 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1642 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1643 r
= manager_run_environment_generators(m
);
1645 r
= manager_run_generators(m
);
1646 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1650 manager_preset_all(m
);
1652 lookup_paths_log(&m
->lookup_paths
);
1655 /* This block is (optionally) done with the reloading counter bumped */
1656 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1658 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1659 * counter here already */
1661 reloading
= manager_reloading_start(m
);
1663 /* First, enumerate what we can from all config files */
1664 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1665 manager_enumerate_perpetual(m
);
1666 manager_enumerate(m
);
1667 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1669 /* Second, deserialize if there is something to deserialize */
1670 if (serialization
) {
1671 r
= manager_deserialize(m
, serialization
, fds
);
1673 return log_error_errno(r
, "Deserialization failed: %m");
1676 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1677 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1679 manager_distribute_fds(m
, fds
);
1681 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1682 r
= manager_setup_notify(m
);
1684 /* No sense to continue without notifications, our children would fail anyway. */
1687 r
= manager_setup_cgroups_agent(m
);
1689 /* Likewise, no sense to continue without empty cgroup notifications. */
1692 r
= manager_setup_user_lookup_fd(m
);
1694 /* This shouldn't fail, except if things are really broken. */
1697 /* Connect to the bus if we are good for it */
1698 manager_setup_bus(m
);
1700 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1701 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1703 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1704 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1706 /* Third, fire things up! */
1707 manager_coldplug(m
);
1709 /* Clean up runtime objects */
1713 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1714 * reload is finished */
1715 m
->send_reloading_done
= true;
1723 int manager_add_job(
1729 sd_bus_error
*error
,
1736 assert(type
< _JOB_TYPE_MAX
);
1738 assert(mode
< _JOB_MODE_MAX
);
1740 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1741 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1743 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1744 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1746 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1747 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1749 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1751 type
= job_type_collapse(type
, unit
);
1753 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1757 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1758 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1759 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1763 if (mode
== JOB_ISOLATE
) {
1764 r
= transaction_add_isolate_jobs(tr
, m
);
1769 if (mode
== JOB_TRIGGERING
) {
1770 r
= transaction_add_triggering_jobs(tr
, unit
);
1775 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1779 log_unit_debug(unit
,
1780 "Enqueued job %s/%s as %u", unit
->id
,
1781 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1784 *ret
= tr
->anchor_job
;
1786 transaction_free(tr
);
1790 transaction_abort(tr
);
1791 transaction_free(tr
);
1795 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1796 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1800 assert(type
< _JOB_TYPE_MAX
);
1802 assert(mode
< _JOB_MODE_MAX
);
1804 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1809 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1812 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1813 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1817 assert(type
< _JOB_TYPE_MAX
);
1819 assert(mode
< _JOB_MODE_MAX
);
1821 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1823 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1828 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1834 assert(mode
< _JOB_MODE_MAX
);
1835 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1837 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1841 /* We need an anchor job */
1842 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1846 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1847 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1849 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1853 transaction_free(tr
);
1857 transaction_abort(tr
);
1858 transaction_free(tr
);
1862 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1865 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1868 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1872 return hashmap_get(m
->units
, name
);
1875 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1880 static const UnitDependency deps
[] = {
1889 while ((u
= m
->target_deps_queue
)) {
1890 assert(u
->in_target_deps_queue
);
1892 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1893 u
->in_target_deps_queue
= false;
1895 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1900 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1901 r
= unit_add_default_target_dependency(u
, target
);
1911 unsigned manager_dispatch_load_queue(Manager
*m
) {
1917 /* Make sure we are not run recursively */
1918 if (m
->dispatching_load_queue
)
1921 m
->dispatching_load_queue
= true;
1923 /* Dispatches the load queue. Takes a unit from the queue and
1924 * tries to load its data until the queue is empty */
1926 while ((u
= m
->load_queue
)) {
1927 assert(u
->in_load_queue
);
1933 m
->dispatching_load_queue
= false;
1935 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1936 * should be loaded and have aliases resolved */
1937 (void) manager_dispatch_target_deps_queue(m
);
1942 int manager_load_unit_prepare(
1949 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1955 assert(name
|| path
);
1958 /* This will prepare the unit for loading, but not actually
1959 * load anything from disk. */
1961 if (path
&& !is_path(path
))
1962 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1965 name
= basename(path
);
1967 t
= unit_name_to_type(name
);
1969 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1970 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1971 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1973 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1976 ret
= manager_get_unit(m
, name
);
1982 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1987 ret
->fragment_path
= strdup(path
);
1988 if (!ret
->fragment_path
)
1992 r
= unit_add_name(ret
, name
);
1996 unit_add_to_load_queue(ret
);
1997 unit_add_to_dbus_queue(ret
);
1998 unit_add_to_gc_queue(ret
);
2006 int manager_load_unit(
2018 /* This will load the service information files, but not actually
2019 * start any services or anything. */
2021 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2025 manager_dispatch_load_queue(m
);
2027 *_ret
= unit_follow_merge(*_ret
);
2031 int manager_load_startable_unit_or_warn(
2037 /* Load a unit, make sure it loaded fully and is not masked. */
2039 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2043 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2045 return log_error_errno(r
, "Failed to load %s %s: %s",
2046 name
? "unit" : "unit file", name
?: path
,
2047 bus_error_message(&error
, r
));
2049 r
= bus_unit_validate_load_state(unit
, &error
);
2051 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2057 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2064 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2065 job_dump(j
, f
, prefix
);
2068 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2076 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2078 unit_dump(u
, f
, prefix
);
2081 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2087 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2088 const dual_timestamp
*t
= m
->timestamps
+ q
;
2089 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2091 if (dual_timestamp_is_set(t
))
2092 fprintf(f
, "%sTimestamp %s: %s\n",
2094 manager_timestamp_to_string(q
),
2095 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2096 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2099 manager_dump_units(m
, f
, prefix
);
2100 manager_dump_jobs(m
, f
, prefix
);
2103 int manager_get_dump_string(Manager
*m
, char **ret
) {
2104 _cleanup_free_
char *dump
= NULL
;
2105 _cleanup_fclose_
FILE *f
= NULL
;
2112 f
= open_memstream_unlocked(&dump
, &size
);
2116 manager_dump(m
, f
, NULL
);
2118 r
= fflush_and_check(f
);
2124 *ret
= TAKE_PTR(dump
);
2129 void manager_clear_jobs(Manager
*m
) {
2134 while ((j
= hashmap_first(m
->jobs
)))
2135 /* No need to recurse. We're cancelling all jobs. */
2136 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2139 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2142 /* First let's drop the unit keyed as "pid". */
2143 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2145 /* Then, let's also drop the array keyed by -pid. */
2146 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2149 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2150 Manager
*m
= userdata
;
2156 while ((j
= prioq_peek(m
->run_queue
))) {
2157 assert(j
->installed
);
2158 assert(j
->in_run_queue
);
2160 (void) job_run_and_invalidate(j
);
2163 if (m
->n_running_jobs
> 0)
2164 manager_watch_jobs_in_progress(m
);
2166 if (m
->n_on_console
> 0)
2167 manager_watch_idle_pipe(m
);
2172 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2173 unsigned n
= 0, budget
;
2179 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2180 * as we can. There's no point in throttling generation of signals in that case. */
2181 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2182 budget
= (unsigned) -1; /* infinite budget in this case */
2184 /* Anything to do at all? */
2185 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2188 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2189 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2190 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2193 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2194 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2195 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2196 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2197 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2198 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2199 * connections it will be counted five times. This difference in counting ("references"
2200 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2201 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2202 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2203 * currently chosen much higher than the "budget". */
2204 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2207 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2209 assert(u
->in_dbus_queue
);
2211 bus_unit_send_change_signal(u
);
2214 if (budget
!= (unsigned) -1)
2218 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2219 assert(j
->in_dbus_queue
);
2221 bus_job_send_change_signal(j
);
2224 if (budget
!= (unsigned) -1)
2228 if (m
->send_reloading_done
) {
2229 m
->send_reloading_done
= false;
2230 bus_manager_send_reloading(m
, false);
2234 if (m
->pending_reload_message
) {
2235 bus_send_pending_reload_message(m
);
2242 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2243 Manager
*m
= userdata
;
2247 n
= recv(fd
, buf
, sizeof(buf
), 0);
2249 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2251 log_error("Got zero-length cgroups agent message, ignoring.");
2254 if ((size_t) n
>= sizeof(buf
)) {
2255 log_error("Got overly long cgroups agent message, ignoring.");
2259 if (memchr(buf
, 0, n
)) {
2260 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2265 manager_notify_cgroup_empty(m
, buf
);
2266 (void) bus_forward_agent_released(m
, buf
);
2271 static void manager_invoke_notify_message(
2274 const struct ucred
*ucred
,
2283 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2285 u
->notifygen
= m
->notifygen
;
2287 if (UNIT_VTABLE(u
)->notify_message
) {
2288 _cleanup_strv_free_
char **tags
= NULL
;
2290 tags
= strv_split(buf
, NEWLINE
);
2296 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2298 } else if (DEBUG_LOGGING
) {
2299 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2301 x
= ellipsize(buf
, 20, 90);
2305 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2309 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2311 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2312 Manager
*m
= userdata
;
2313 char buf
[NOTIFY_BUFFER_MAX
+1];
2314 struct iovec iovec
= {
2316 .iov_len
= sizeof(buf
)-1,
2319 struct cmsghdr cmsghdr
;
2320 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2321 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2323 struct msghdr msghdr
= {
2326 .msg_control
= &control
,
2327 .msg_controllen
= sizeof(control
),
2330 struct cmsghdr
*cmsg
;
2331 struct ucred
*ucred
= NULL
;
2332 _cleanup_free_ Unit
**array_copy
= NULL
;
2333 Unit
*u1
, *u2
, **array
;
2334 int r
, *fd_array
= NULL
;
2340 assert(m
->notify_fd
== fd
);
2342 if (revents
!= EPOLLIN
) {
2343 log_warning("Got unexpected poll event for notify fd.");
2347 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2349 if (IN_SET(errno
, EAGAIN
, EINTR
))
2350 return 0; /* Spurious wakeup, try again */
2352 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2353 * won't take notification messages anymore, but that's still better than busy looping around this:
2354 * being woken up over and over again but being unable to actually read the message off the socket. */
2355 return log_error_errno(errno
, "Failed to receive notification message: %m");
2358 CMSG_FOREACH(cmsg
, &msghdr
) {
2359 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2361 fd_array
= (int*) CMSG_DATA(cmsg
);
2362 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2364 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2365 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2366 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2368 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2375 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2377 close_many(fd_array
, n_fds
);
2383 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2384 log_warning("Received notify message without valid credentials. Ignoring.");
2388 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2389 log_warning("Received notify message exceeded maximum size. Ignoring.");
2393 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2394 * trailing NUL byte in the message, but don't expect it. */
2395 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2396 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2400 /* Make sure it's NUL-terminated. */
2403 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2406 /* Notify every unit that might be interested, which might be multiple. */
2407 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2408 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2409 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2416 array_copy
= newdup(Unit
*, array
, k
+1);
2420 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2421 * make sure we only invoke each unit's handler once. */
2423 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2427 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2431 for (size_t i
= 0; array_copy
[i
]; i
++) {
2432 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2437 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2439 if (fdset_size(fds
) > 0)
2440 log_warning("Got extra auxiliary fds with notification message, closing them.");
2445 static void manager_invoke_sigchld_event(
2448 const siginfo_t
*si
) {
2454 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2455 if (u
->sigchldgen
== m
->sigchldgen
)
2457 u
->sigchldgen
= m
->sigchldgen
;
2459 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2460 unit_unwatch_pid(u
, si
->si_pid
);
2462 if (UNIT_VTABLE(u
)->sigchld_event
)
2463 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2466 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2467 Manager
*m
= userdata
;
2474 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2475 * while it is a zombie. */
2477 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2479 if (errno
!= ECHILD
)
2480 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2488 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2489 _cleanup_free_ Unit
**array_copy
= NULL
;
2490 _cleanup_free_
char *name
= NULL
;
2491 Unit
*u1
, *u2
, **array
;
2493 (void) get_process_comm(si
.si_pid
, &name
);
2495 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2496 si
.si_pid
, strna(name
),
2497 sigchld_code_to_string(si
.si_code
),
2499 strna(si
.si_code
== CLD_EXITED
2500 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2501 : signal_to_string(si
.si_status
)));
2503 /* Increase the generation counter used for filtering out duplicate unit invocations */
2506 /* And now figure out the unit this belongs to, it might be multiple... */
2507 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2508 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2509 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2513 /* Count how many entries the array has */
2517 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2518 array_copy
= newdup(Unit
*, array
, n
+1);
2523 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2524 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2525 * each iteration. */
2527 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2528 * We only do this for the cgroup the PID belonged to. */
2529 (void) unit_check_oom(u1
);
2531 manager_invoke_sigchld_event(m
, u1
, &si
);
2534 manager_invoke_sigchld_event(m
, u2
, &si
);
2536 for (size_t i
= 0; array_copy
[i
]; i
++)
2537 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2540 /* And now, we actually reap the zombie. */
2541 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2542 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2549 /* All children processed for now, turn off event source */
2551 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2553 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2558 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2559 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2562 log_debug("Activating special unit %s", name
);
2564 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2566 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2569 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2570 /* If the user presses C-A-D more than
2571 * 7 times within 2s, we reboot/shutdown immediately,
2572 * unless it was disabled in system.conf */
2574 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2575 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2577 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2578 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2581 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2582 Manager
*m
= userdata
;
2584 struct signalfd_siginfo sfsi
;
2588 assert(m
->signal_fd
== fd
);
2590 if (revents
!= EPOLLIN
) {
2591 log_warning("Got unexpected events from signal file descriptor.");
2595 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2596 if (n
!= sizeof(sfsi
)) {
2598 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2602 if (IN_SET(errno
, EINTR
, EAGAIN
))
2605 /* We return an error here, which will kill this handler,
2606 * to avoid a busy loop on read error. */
2607 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2610 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2611 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2612 ? LOG_DEBUG
: LOG_INFO
,
2615 switch (sfsi
.ssi_signo
) {
2618 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2620 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2625 if (MANAGER_IS_SYSTEM(m
)) {
2626 /* This is for compatibility with the original sysvinit */
2627 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2630 m
->objective
= MANAGER_REEXECUTE
;
2636 if (MANAGER_IS_SYSTEM(m
))
2637 manager_handle_ctrl_alt_del(m
);
2639 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2640 JOB_REPLACE_IRREVERSIBLY
);
2644 /* This is a nop on non-init */
2645 if (MANAGER_IS_SYSTEM(m
))
2646 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2651 /* This is a nop on non-init */
2652 if (MANAGER_IS_SYSTEM(m
))
2653 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2658 if (manager_dbus_is_running(m
, false)) {
2659 log_info("Trying to reconnect to bus...");
2661 (void) bus_init_api(m
);
2663 if (MANAGER_IS_SYSTEM(m
))
2664 (void) bus_init_system(m
);
2666 log_info("Starting D-Bus service...");
2667 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2673 _cleanup_free_
char *dump
= NULL
;
2675 r
= manager_get_dump_string(m
, &dump
);
2677 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2681 log_dump(LOG_INFO
, dump
);
2686 if (verify_run_space_and_log("Refusing to reload") < 0)
2689 m
->objective
= MANAGER_RELOAD
;
2694 /* Starting SIGRTMIN+0 */
2695 static const struct {
2698 } target_table
[] = {
2699 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2700 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2701 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2702 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2703 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2704 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2705 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2708 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2709 static const ManagerObjective objective_table
[] = {
2711 [1] = MANAGER_POWEROFF
,
2712 [2] = MANAGER_REBOOT
,
2713 [3] = MANAGER_KEXEC
,
2716 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2717 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2718 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2719 manager_start_target(m
, target_table
[idx
].target
,
2720 target_table
[idx
].mode
);
2724 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2725 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2726 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2730 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2733 manager_set_show_status(m
, SHOW_STATUS_YES
);
2737 manager_set_show_status(m
, SHOW_STATUS_NO
);
2741 manager_override_log_level(m
, LOG_DEBUG
);
2745 manager_restore_original_log_level(m
);
2749 if (MANAGER_IS_USER(m
)) {
2750 m
->objective
= MANAGER_EXIT
;
2754 /* This is a nop on init */
2758 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2759 manager_restore_original_log_target(m
);
2763 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2767 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2771 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2778 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2779 Manager
*m
= userdata
;
2784 assert(m
->time_change_fd
== fd
);
2786 log_struct(LOG_DEBUG
,
2787 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2788 LOG_MESSAGE("Time has been changed"));
2790 /* Restart the watch */
2791 (void) manager_setup_time_change(m
);
2793 HASHMAP_FOREACH(u
, m
->units
, i
)
2794 if (UNIT_VTABLE(u
)->time_change
)
2795 UNIT_VTABLE(u
)->time_change(u
);
2800 static int manager_dispatch_timezone_change(
2801 sd_event_source
*source
,
2802 const struct inotify_event
*e
,
2805 Manager
*m
= userdata
;
2812 log_debug("inotify event for /etc/localtime");
2814 changed
= manager_read_timezone_stat(m
);
2818 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2819 (void) manager_setup_timezone_change(m
);
2821 /* Read the new timezone */
2824 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2826 HASHMAP_FOREACH(u
, m
->units
, i
)
2827 if (UNIT_VTABLE(u
)->timezone_change
)
2828 UNIT_VTABLE(u
)->timezone_change(u
);
2833 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2834 Manager
*m
= userdata
;
2837 assert(m
->idle_pipe
[2] == fd
);
2839 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2840 * now turn off any further console output if there's at least one service that needs console access, so that
2841 * from now on our own output should not spill into that service's output anymore. After all, we support
2842 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2843 * exclusively without our interference. */
2844 m
->no_console_output
= m
->n_on_console
> 0;
2846 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2847 * by closing the pipes towards them, which is what they are waiting for. */
2848 manager_close_idle_pipe(m
);
2853 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2854 Manager
*m
= userdata
;
2861 manager_print_jobs_in_progress(m
);
2863 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2864 r
= sd_event_source_set_time(source
, next
);
2868 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2871 int manager_loop(Manager
*m
) {
2872 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2876 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2878 manager_check_finished(m
);
2880 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2881 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2883 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2885 while (m
->objective
== MANAGER_OK
) {
2888 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2891 if (!ratelimit_below(&rl
)) {
2892 /* Yay, something is going seriously wrong, pause a little */
2893 log_warning("Looping too fast. Throttling execution a little.");
2897 if (manager_dispatch_load_queue(m
) > 0)
2900 if (manager_dispatch_gc_job_queue(m
) > 0)
2903 if (manager_dispatch_gc_unit_queue(m
) > 0)
2906 if (manager_dispatch_cleanup_queue(m
) > 0)
2909 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2912 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2915 if (manager_dispatch_dbus_queue(m
) > 0)
2918 /* Sleep for half the watchdog time */
2919 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2920 wait_usec
= m
->runtime_watchdog
/ 2;
2924 wait_usec
= USEC_INFINITY
;
2926 r
= sd_event_run(m
->event
, wait_usec
);
2928 return log_error_errno(r
, "Failed to run event loop: %m");
2931 return m
->objective
;
2934 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2935 _cleanup_free_
char *n
= NULL
;
2936 sd_id128_t invocation_id
;
2944 r
= unit_name_from_dbus_path(s
, &n
);
2948 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2949 * as invocation ID. */
2950 r
= sd_id128_from_string(n
, &invocation_id
);
2952 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2958 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2959 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2960 SD_ID128_FORMAT_VAL(invocation_id
));
2963 /* If this didn't work, we check if this is a unit name */
2964 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2965 _cleanup_free_
char *nn
= NULL
;
2968 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2969 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2972 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2980 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2990 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2994 r
= safe_atou(p
, &id
);
2998 j
= manager_get_job(m
, id
);
3007 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3010 _cleanup_free_
char *p
= NULL
;
3014 if (!MANAGER_IS_SYSTEM(m
))
3017 audit_fd
= get_audit_fd();
3021 /* Don't generate audit events if the service was already
3022 * started and we're just deserializing */
3023 if (MANAGER_IS_RELOADING(m
))
3026 if (u
->type
!= UNIT_SERVICE
)
3029 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3031 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3035 msg
= strjoina("unit=", p
);
3036 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3038 /* We aren't allowed to send audit messages?
3039 * Then let's not retry again. */
3042 log_warning_errno(errno
, "Failed to send audit message: %m");
3048 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3049 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3050 _cleanup_free_
char *message
= NULL
;
3051 _cleanup_close_
int fd
= -1;
3054 /* Don't generate plymouth events if the service was already
3055 * started and we're just deserializing */
3056 if (MANAGER_IS_RELOADING(m
))
3059 if (!MANAGER_IS_SYSTEM(m
))
3062 if (detect_container() > 0)
3065 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3068 /* We set SOCK_NONBLOCK here so that we rather drop the
3069 * message then wait for plymouth */
3070 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3072 log_error_errno(errno
, "socket() failed: %m");
3076 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3077 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3078 log_error_errno(errno
, "connect() failed: %m");
3082 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3088 if (write(fd
, message
, n
+ 1) != n
+ 1)
3089 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3090 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3093 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3099 fd
= open_serialization_fd("systemd-state");
3103 f
= fdopen(fd
, "w+");
3113 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3118 /* The following timestamps only apply to the host system, hence only serialize them there */
3120 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3121 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3122 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3123 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3126 int manager_serialize(
3130 bool switching_root
) {
3142 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3144 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3145 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3146 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3147 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3148 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3149 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3150 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3152 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3153 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3155 t
= show_status_to_string(m
->show_status
);
3157 (void) serialize_item(f
, "show-status", t
);
3159 if (m
->log_level_overridden
)
3160 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3161 if (m
->log_target_overridden
)
3162 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3164 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3165 _cleanup_free_
char *joined
= NULL
;
3167 if (!manager_timestamp_shall_serialize(q
))
3170 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3174 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3177 if (!switching_root
)
3178 (void) serialize_strv(f
, "env", m
->client_environment
);
3180 if (m
->notify_fd
>= 0) {
3181 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3185 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3188 if (m
->cgroups_agent_fd
>= 0) {
3189 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3194 if (m
->user_lookup_fds
[0] >= 0) {
3197 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3199 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3201 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3203 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3205 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3208 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3210 r
= dynamic_user_serialize(m
, f
, fds
);
3214 manager_serialize_uid_refs(m
, f
);
3215 manager_serialize_gid_refs(m
, f
);
3217 r
= exec_runtime_serialize(m
, f
, fds
);
3221 (void) fputc('\n', f
);
3223 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3231 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3236 r
= fflush_and_check(f
);
3238 return log_error_errno(r
, "Failed to flush serialization: %m");
3240 r
= bus_fdset_add_all(m
, fds
);
3242 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3247 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3251 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3255 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3258 r
= unit_deserialize(u
, f
, fds
);
3262 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3268 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3269 const char *unit_name
;
3273 _cleanup_free_
char *line
= NULL
;
3275 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3277 return log_error_errno(r
, "Failed to read serialization line: %m");
3281 unit_name
= strstrip(line
);
3283 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3287 r
= unit_deserialize_skip(f
);
3296 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3302 log_debug("Deserializing state...");
3304 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3305 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3307 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3310 _cleanup_free_
char *line
= NULL
;
3311 const char *val
, *l
;
3313 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3315 return log_error_errno(r
, "Failed to read serialization line: %m");
3320 if (isempty(l
)) /* end marker */
3323 if ((val
= startswith(l
, "current-job-id="))) {
3326 if (safe_atou32(val
, &id
) < 0)
3327 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3329 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3331 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3334 if (safe_atou32(val
, &n
) < 0)
3335 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3337 m
->n_installed_jobs
+= n
;
3339 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3342 if (safe_atou32(val
, &n
) < 0)
3343 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3345 m
->n_failed_jobs
+= n
;
3347 } else if ((val
= startswith(l
, "taint-usr="))) {
3350 b
= parse_boolean(val
);
3352 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3354 m
->taint_usr
= m
->taint_usr
|| b
;
3356 } else if ((val
= startswith(l
, "ready-sent="))) {
3359 b
= parse_boolean(val
);
3361 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3363 m
->ready_sent
= m
->ready_sent
|| b
;
3365 } else if ((val
= startswith(l
, "taint-logged="))) {
3368 b
= parse_boolean(val
);
3370 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3372 m
->taint_logged
= m
->taint_logged
|| b
;
3374 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3377 b
= parse_boolean(val
);
3379 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3381 m
->service_watchdogs
= b
;
3383 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3386 b
= parse_boolean(val
);
3388 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3390 m
->honor_device_enumeration
= b
;
3392 } else if ((val
= startswith(l
, "show-status="))) {
3395 s
= show_status_from_string(val
);
3397 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3399 manager_set_show_status(m
, s
);
3401 } else if ((val
= startswith(l
, "log-level-override="))) {
3404 level
= log_level_from_string(val
);
3406 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3408 manager_override_log_level(m
, level
);
3410 } else if ((val
= startswith(l
, "log-target-override="))) {
3413 target
= log_target_from_string(val
);
3415 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3417 manager_override_log_target(m
, target
);
3419 } else if (startswith(l
, "env=")) {
3420 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3422 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3424 } else if ((val
= startswith(l
, "notify-fd="))) {
3427 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3428 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3430 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3431 safe_close(m
->notify_fd
);
3432 m
->notify_fd
= fdset_remove(fds
, fd
);
3435 } else if ((val
= startswith(l
, "notify-socket="))) {
3436 r
= free_and_strdup(&m
->notify_socket
, val
);
3440 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3443 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3444 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3446 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3447 safe_close(m
->cgroups_agent_fd
);
3448 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3451 } else if ((val
= startswith(l
, "user-lookup="))) {
3454 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3455 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3457 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3458 safe_close_pair(m
->user_lookup_fds
);
3459 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3460 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3463 } else if ((val
= startswith(l
, "dynamic-user=")))
3464 dynamic_user_deserialize_one(m
, val
, fds
);
3465 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3466 manager_deserialize_uid_refs_one(m
, val
);
3467 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3468 manager_deserialize_gid_refs_one(m
, val
);
3469 else if ((val
= startswith(l
, "exec-runtime=")))
3470 exec_runtime_deserialize_one(m
, val
, fds
);
3471 else if ((val
= startswith(l
, "subscribed="))) {
3473 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3479 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3480 val
= startswith(l
, manager_timestamp_to_string(q
));
3484 val
= startswith(val
, "-timestamp=");
3489 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3490 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3491 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3492 log_notice("Unknown serialization item '%s', ignoring.", l
);
3496 return manager_deserialize_units(m
, f
, fds
);
3499 int manager_reload(Manager
*m
) {
3500 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3501 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3502 _cleanup_fclose_
FILE *f
= NULL
;
3507 r
= manager_open_serialization(m
, &f
);
3509 return log_error_errno(r
, "Failed to create serialization file: %m");
3515 /* We are officially in reload mode from here on. */
3516 reloading
= manager_reloading_start(m
);
3518 r
= manager_serialize(m
, f
, fds
, false);
3522 if (fseeko(f
, 0, SEEK_SET
) < 0)
3523 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3525 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3528 bus_manager_send_reloading(m
, true);
3530 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3531 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3534 manager_clear_jobs_and_units(m
);
3535 lookup_paths_flush_generator(&m
->lookup_paths
);
3536 lookup_paths_free(&m
->lookup_paths
);
3537 exec_runtime_vacuum(m
);
3538 dynamic_user_vacuum(m
, false);
3539 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3540 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3542 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3544 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3546 (void) manager_run_environment_generators(m
);
3547 (void) manager_run_generators(m
);
3549 lookup_paths_log(&m
->lookup_paths
);
3551 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3552 manager_free_unit_name_maps(m
);
3554 /* First, enumerate what we can from kernel and suchlike */
3555 manager_enumerate_perpetual(m
);
3556 manager_enumerate(m
);
3558 /* Second, deserialize our stored data */
3559 r
= manager_deserialize(m
, f
, fds
);
3561 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3563 /* We don't need the serialization anymore */
3566 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3567 (void) manager_setup_notify(m
);
3568 (void) manager_setup_cgroups_agent(m
);
3569 (void) manager_setup_user_lookup_fd(m
);
3571 /* Third, fire things up! */
3572 manager_coldplug(m
);
3574 /* Clean up runtime objects no longer referenced */
3577 /* Consider the reload process complete now. */
3578 assert(m
->n_reloading
> 0);
3581 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3582 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3583 * let's always set the flag here for safety. */
3584 m
->honor_device_enumeration
= true;
3588 m
->send_reloading_done
= true;
3592 void manager_reset_failed(Manager
*m
) {
3598 HASHMAP_FOREACH(u
, m
->units
, i
)
3599 unit_reset_failed(u
);
3602 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3608 /* Returns true if the unit is inactive or going down */
3609 u
= manager_get_unit(m
, name
);
3613 return unit_inactive_or_pending(u
);
3616 static void log_taint_string(Manager
*m
) {
3617 _cleanup_free_
char *taint
= NULL
;
3621 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3624 m
->taint_logged
= true; /* only check for taint once */
3626 taint
= manager_taint_string(m
);
3630 log_struct(LOG_NOTICE
,
3631 LOG_MESSAGE("System is tainted: %s", taint
),
3633 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3636 static void manager_notify_finished(Manager
*m
) {
3637 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3638 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3640 if (MANAGER_IS_TEST_RUN(m
))
3643 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3644 char ts
[FORMAT_TIMESPAN_MAX
];
3645 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3648 size_t size
= sizeof buf
;
3650 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3651 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3652 * negative values. */
3654 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3655 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3656 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3657 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3659 if (firmware_usec
> 0)
3660 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3661 if (loader_usec
> 0)
3662 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3664 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3666 /* The initrd case on bare-metal*/
3667 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3668 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3670 log_struct(LOG_INFO
,
3671 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3672 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3673 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3674 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3675 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3677 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3678 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3679 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3680 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3682 /* The initrd-less case on bare-metal*/
3684 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3687 log_struct(LOG_INFO
,
3688 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3689 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3690 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3691 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3693 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3694 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3695 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3698 /* The container and --user case */
3699 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3700 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3702 log_struct(LOG_INFO
,
3703 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3704 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3705 LOG_MESSAGE("Startup finished in %s.",
3706 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3709 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3712 m
->ready_sent
? "STATUS=Startup finished in %s."
3714 "STATUS=Startup finished in %s.",
3715 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3716 m
->ready_sent
= true;
3718 log_taint_string(m
);
3721 static void manager_send_ready(Manager
*m
) {
3724 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3725 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3728 m
->ready_sent
= true;
3732 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3735 static void manager_check_basic_target(Manager
*m
) {
3740 /* Small shortcut */
3741 if (m
->ready_sent
&& m
->taint_logged
)
3744 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3745 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3748 /* For user managers, send out READY=1 as soon as we reach basic.target */
3749 manager_send_ready(m
);
3751 /* Log the taint string as soon as we reach basic.target */
3752 log_taint_string(m
);
3755 void manager_check_finished(Manager
*m
) {
3758 if (MANAGER_IS_RELOADING(m
))
3761 /* Verify that we have entered the event loop already, and not left it again. */
3762 if (!MANAGER_IS_RUNNING(m
))
3765 manager_check_basic_target(m
);
3767 if (hashmap_size(m
->jobs
) > 0) {
3768 if (m
->jobs_in_progress_event_source
)
3769 /* Ignore any failure, this is only for feedback */
3770 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3775 manager_flip_auto_status(m
, false);
3777 /* Notify Type=idle units that we are done now */
3778 manager_close_idle_pipe(m
);
3780 /* Turn off confirm spawn now */
3781 m
->confirm_spawn
= NULL
;
3783 /* No need to update ask password status when we're going non-interactive */
3784 manager_close_ask_password(m
);
3786 /* This is no longer the first boot */
3787 manager_set_first_boot(m
, false);
3789 if (MANAGER_IS_FINISHED(m
))
3792 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3794 manager_notify_finished(m
);
3796 manager_invalidate_startup_units(m
);
3799 static bool generator_path_any(const char* const* paths
) {
3803 /* Optimize by skipping the whole process by not creating output directories
3804 * if no generators are found. */
3805 STRV_FOREACH(path
, (char**) paths
)
3806 if (access(*path
, F_OK
) == 0)
3808 else if (errno
!= ENOENT
)
3809 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3814 static const char *const system_env_generator_binary_paths
[] = {
3815 "/run/systemd/system-environment-generators",
3816 "/etc/systemd/system-environment-generators",
3817 "/usr/local/lib/systemd/system-environment-generators",
3818 SYSTEM_ENV_GENERATOR_PATH
,
3822 static const char *const user_env_generator_binary_paths
[] = {
3823 "/run/systemd/user-environment-generators",
3824 "/etc/systemd/user-environment-generators",
3825 "/usr/local/lib/systemd/user-environment-generators",
3826 USER_ENV_GENERATOR_PATH
,
3830 static int manager_run_environment_generators(Manager
*m
) {
3831 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3832 const char *const *paths
;
3834 [STDOUT_GENERATE
] = &tmp
,
3835 [STDOUT_COLLECT
] = &tmp
,
3836 [STDOUT_CONSUME
] = &m
->transient_environment
,
3840 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3843 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3845 if (!generator_path_any(paths
))
3848 RUN_WITH_UMASK(0022)
3849 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3850 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3854 static int manager_run_generators(Manager
*m
) {
3855 _cleanup_strv_free_
char **paths
= NULL
;
3856 const char *argv
[5];
3861 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3864 paths
= generator_binary_paths(m
->unit_file_scope
);
3868 if (!generator_path_any((const char* const*) paths
))
3871 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3873 log_error_errno(r
, "Failed to create generator directories: %m");
3877 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3878 argv
[1] = m
->lookup_paths
.generator
;
3879 argv
[2] = m
->lookup_paths
.generator_early
;
3880 argv
[3] = m
->lookup_paths
.generator_late
;
3883 RUN_WITH_UMASK(0022)
3884 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3885 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3890 lookup_paths_trim_generator(&m
->lookup_paths
);
3894 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3899 if (strv_isempty(plus
))
3902 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3906 sanitize_environment(a
);
3908 return strv_free_and_replace(m
->transient_environment
, a
);
3911 int manager_client_environment_modify(
3916 char **a
= NULL
, **b
= NULL
, **l
;
3920 if (strv_isempty(minus
) && strv_isempty(plus
))
3923 l
= m
->client_environment
;
3925 if (!strv_isempty(minus
)) {
3926 a
= strv_env_delete(l
, 1, minus
);
3933 if (!strv_isempty(plus
)) {
3934 b
= strv_env_merge(2, l
, plus
);
3943 if (m
->client_environment
!= l
)
3944 strv_free(m
->client_environment
);
3951 m
->client_environment
= sanitize_environment(l
);
3955 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3961 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3969 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3974 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3975 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3977 if (!default_rlimit
[i
])
3980 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3988 void manager_recheck_dbus(Manager
*m
) {
3991 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3992 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3993 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3994 * while in the user instance we can assume it's already there. */
3996 if (MANAGER_IS_RELOADING(m
))
3997 return; /* don't check while we are reloading… */
3999 if (manager_dbus_is_running(m
, false)) {
4000 (void) bus_init_api(m
);
4002 if (MANAGER_IS_SYSTEM(m
))
4003 (void) bus_init_system(m
);
4005 (void) bus_done_api(m
);
4007 if (MANAGER_IS_SYSTEM(m
))
4008 (void) bus_done_system(m
);
4012 static bool manager_journal_is_running(Manager
*m
) {
4017 if (MANAGER_IS_TEST_RUN(m
))
4020 /* If we are the user manager we can safely assume that the journal is up */
4021 if (!MANAGER_IS_SYSTEM(m
))
4024 /* Check that the socket is not only up, but in RUNNING state */
4025 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4028 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4031 /* Similar, check if the daemon itself is fully up, too */
4032 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4035 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4041 void disable_printk_ratelimit(void) {
4042 /* Disable kernel's printk ratelimit.
4044 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4045 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4046 * setting takes precedence. */
4049 r
= sysctl_write("kernel/printk_devkmsg", "on");
4051 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4054 void manager_recheck_journal(Manager
*m
) {
4058 /* Don't bother with this unless we are in the special situation of being PID 1 */
4059 if (getpid_cached() != 1)
4062 /* Don't check this while we are reloading, things might still change */
4063 if (MANAGER_IS_RELOADING(m
))
4066 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4067 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4068 * an activation ourselves we can't fulfill. */
4069 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4073 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4075 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4077 if (!MANAGER_IS_SYSTEM(m
))
4080 if (m
->show_status
!= mode
)
4081 log_debug("%s showing of status.",
4082 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4083 m
->show_status
= mode
;
4085 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4086 (void) touch("/run/systemd/show-status");
4088 (void) unlink("/run/systemd/show-status");
4091 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4094 if (!MANAGER_IS_SYSTEM(m
))
4097 if (m
->no_console_output
)
4100 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4103 /* If we cannot find out the status properly, just proceed. */
4104 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4107 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4110 const char *manager_get_confirm_spawn(Manager
*m
) {
4111 static int last_errno
= 0;
4117 /* Here's the deal: we want to test the validity of the console but don't want
4118 * PID1 to go through the whole console process which might block. But we also
4119 * want to warn the user only once if something is wrong with the console so we
4120 * cannot do the sanity checks after spawning our children. So here we simply do
4121 * really basic tests to hopefully trap common errors.
4123 * If the console suddenly disappear at the time our children will really it
4124 * then they will simply fail to acquire it and a positive answer will be
4125 * assumed. New children will fallback to /dev/console though.
4127 * Note: TTYs are devices that can come and go any time, and frequently aren't
4128 * available yet during early boot (consider a USB rs232 dongle...). If for any
4129 * reason the configured console is not ready, we fallback to the default
4132 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4133 return m
->confirm_spawn
;
4135 if (stat(m
->confirm_spawn
, &st
) < 0) {
4140 if (!S_ISCHR(st
.st_mode
)) {
4146 return m
->confirm_spawn
;
4149 if (last_errno
!= r
)
4150 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4152 return "/dev/console";
4155 void manager_set_first_boot(Manager
*m
, bool b
) {
4158 if (!MANAGER_IS_SYSTEM(m
))
4161 if (m
->first_boot
!= (int) b
) {
4163 (void) touch("/run/systemd/first-boot");
4165 (void) unlink("/run/systemd/first-boot");
4171 void manager_disable_confirm_spawn(void) {
4172 (void) touch("/run/systemd/confirm_spawn_disabled");
4175 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4176 if (!m
->confirm_spawn
)
4179 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4182 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4185 /* If m is NULL, assume we're after shutdown and let the messages through. */
4187 if (m
&& !manager_get_show_status(m
, type
))
4190 /* XXX We should totally drop the check for ephemeral here
4191 * and thus effectively make 'Type=idle' pointless. */
4192 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4195 va_start(ap
, format
);
4196 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4200 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4201 char p
[strlen(path
)+1];
4207 path_simplify(p
, false);
4209 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4212 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4217 assert(u
->manager
== m
);
4219 size
= set_size(m
->failed_units
);
4222 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4226 if (set_put(m
->failed_units
, u
) < 0)
4229 (void) set_remove(m
->failed_units
, u
);
4231 if (set_size(m
->failed_units
) != size
)
4232 bus_manager_send_change_signal(m
);
4237 ManagerState
manager_state(Manager
*m
) {
4242 /* Did we ever finish booting? If not then we are still starting up */
4243 if (!MANAGER_IS_FINISHED(m
)) {
4245 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4246 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4247 return MANAGER_INITIALIZING
;
4249 return MANAGER_STARTING
;
4252 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4253 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4254 if (u
&& unit_active_or_pending(u
))
4255 return MANAGER_STOPPING
;
4257 if (MANAGER_IS_SYSTEM(m
)) {
4258 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4259 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4260 if (u
&& unit_active_or_pending(u
))
4261 return MANAGER_MAINTENANCE
;
4263 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4264 if (u
&& unit_active_or_pending(u
))
4265 return MANAGER_MAINTENANCE
;
4268 /* Are there any failed units? If so, we are in degraded mode */
4269 if (set_size(m
->failed_units
) > 0)
4270 return MANAGER_DEGRADED
;
4272 return MANAGER_RUNNING
;
4275 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4277 static void manager_unref_uid_internal(
4282 int (*_clean_ipc
)(uid_t uid
)) {
4288 assert(uid_is_valid(uid
));
4291 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4292 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4294 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4295 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4296 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4297 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4299 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4300 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4302 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4305 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4307 n
= c
& ~DESTROY_IPC_FLAG
;
4311 if (destroy_now
&& n
== 0) {
4312 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4314 if (c
& DESTROY_IPC_FLAG
) {
4315 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4316 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4318 (void) _clean_ipc(uid
);
4321 c
= n
| (c
& DESTROY_IPC_FLAG
);
4322 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4326 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4327 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4330 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4331 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4334 static int manager_ref_uid_internal(
4345 assert(uid_is_valid(uid
));
4347 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4348 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4350 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4351 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4353 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4356 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4360 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4362 n
= c
& ~DESTROY_IPC_FLAG
;
4365 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4368 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4370 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4373 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4374 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4377 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4378 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4381 static void manager_vacuum_uid_refs_internal(
4384 int (*_clean_ipc
)(uid_t uid
)) {
4393 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4397 uid
= PTR_TO_UID(k
);
4398 c
= PTR_TO_UINT32(p
);
4400 n
= c
& ~DESTROY_IPC_FLAG
;
4404 if (c
& DESTROY_IPC_FLAG
) {
4405 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4406 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4408 (void) _clean_ipc(uid
);
4411 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4415 void manager_vacuum_uid_refs(Manager
*m
) {
4416 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4419 void manager_vacuum_gid_refs(Manager
*m
) {
4420 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4423 static void manager_serialize_uid_refs_internal(
4427 const char *field_name
) {
4437 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4438 * of it is better rebuild after a reload/reexec. */
4440 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4444 uid
= PTR_TO_UID(k
);
4445 c
= PTR_TO_UINT32(p
);
4447 if (!(c
& DESTROY_IPC_FLAG
))
4450 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4454 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4455 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4458 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4459 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4462 static void manager_deserialize_uid_refs_one_internal(
4465 const char *value
) {
4475 r
= parse_uid(value
, &uid
);
4476 if (r
< 0 || uid
== 0) {
4477 log_debug("Unable to parse UID reference serialization");
4481 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4487 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4488 if (c
& DESTROY_IPC_FLAG
)
4491 c
|= DESTROY_IPC_FLAG
;
4493 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4495 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4500 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4501 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4504 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4505 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4508 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4512 char unit_name
[UNIT_NAME_MAX
+1];
4515 Manager
*m
= userdata
;
4523 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4524 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4525 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4527 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4529 if (IN_SET(errno
, EINTR
, EAGAIN
))
4532 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4535 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4536 log_warning("Received too short user lookup message, ignoring.");
4540 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4541 log_warning("Received too long user lookup message, ignoring.");
4545 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4546 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4550 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4551 if (memchr(buffer
.unit_name
, 0, n
)) {
4552 log_warning("Received lookup message with embedded NUL character, ignoring.");
4556 buffer
.unit_name
[n
] = 0;
4557 u
= manager_get_unit(m
, buffer
.unit_name
);
4559 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4563 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4565 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4569 char *manager_taint_string(Manager
*m
) {
4570 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4574 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4575 * Only things that are detected at runtime should be tagged
4576 * here. For stuff that is set during compilation, emit a warning
4577 * in the configuration phase. */
4581 buf
= new(char, sizeof("split-usr:"
4585 "overflowuid-not-65534:"
4586 "overflowgid-not-65534:"));
4594 e
= stpcpy(e
, "split-usr:");
4596 if (access("/proc/cgroups", F_OK
) < 0)
4597 e
= stpcpy(e
, "cgroups-missing:");
4599 if (clock_is_localtime(NULL
) > 0)
4600 e
= stpcpy(e
, "local-hwclock:");
4602 r
= readlink_malloc("/var/run", &destination
);
4603 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4604 e
= stpcpy(e
, "var-run-bad:");
4606 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4607 if (r
>= 0 && !streq(overflowuid
, "65534"))
4608 e
= stpcpy(e
, "overflowuid-not-65534:");
4610 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4611 if (r
>= 0 && !streq(overflowgid
, "65534"))
4612 e
= stpcpy(e
, "overflowgid-not-65534:");
4614 /* remove the last ':' */
4621 void manager_ref_console(Manager
*m
) {
4627 void manager_unref_console(Manager
*m
) {
4629 assert(m
->n_on_console
> 0);
4632 if (m
->n_on_console
== 0)
4633 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4636 void manager_override_log_level(Manager
*m
, int level
) {
4637 _cleanup_free_
char *s
= NULL
;
4640 if (!m
->log_level_overridden
) {
4641 m
->original_log_level
= log_get_max_level();
4642 m
->log_level_overridden
= true;
4645 (void) log_level_to_string_alloc(level
, &s
);
4646 log_info("Setting log level to %s.", strna(s
));
4648 log_set_max_level(level
);
4651 void manager_restore_original_log_level(Manager
*m
) {
4652 _cleanup_free_
char *s
= NULL
;
4655 if (!m
->log_level_overridden
)
4658 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4659 log_info("Restoring log level to original (%s).", strna(s
));
4661 log_set_max_level(m
->original_log_level
);
4662 m
->log_level_overridden
= false;
4665 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4668 if (!m
->log_target_overridden
) {
4669 m
->original_log_target
= log_get_target();
4670 m
->log_target_overridden
= true;
4673 log_info("Setting log target to %s.", log_target_to_string(target
));
4674 log_set_target(target
);
4677 void manager_restore_original_log_target(Manager
*m
) {
4680 if (!m
->log_target_overridden
)
4683 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4685 log_set_target(m
->original_log_target
);
4686 m
->log_target_overridden
= false;
4689 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4691 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4692 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4693 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4697 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4698 [MANAGER_INITIALIZING
] = "initializing",
4699 [MANAGER_STARTING
] = "starting",
4700 [MANAGER_RUNNING
] = "running",
4701 [MANAGER_DEGRADED
] = "degraded",
4702 [MANAGER_MAINTENANCE
] = "maintenance",
4703 [MANAGER_STOPPING
] = "stopping",
4706 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4708 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4709 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4710 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4711 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4712 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4713 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4714 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4715 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4716 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4717 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4718 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4719 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4720 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4721 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4722 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4723 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4724 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4725 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4726 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4729 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4731 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4732 [OOM_CONTINUE
] = "continue",
4733 [OOM_STOP
] = "stop",
4734 [OOM_KILL
] = "kill",
4737 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);