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
);
1376 sd_event_source_unref(m
->sync_bus_names_event_source
);
1378 safe_close(m
->signal_fd
);
1379 safe_close(m
->notify_fd
);
1380 safe_close(m
->cgroups_agent_fd
);
1381 safe_close(m
->time_change_fd
);
1382 safe_close_pair(m
->user_lookup_fds
);
1384 manager_close_ask_password(m
);
1386 manager_close_idle_pipe(m
);
1388 sd_event_unref(m
->event
);
1390 free(m
->notify_socket
);
1392 lookup_paths_free(&m
->lookup_paths
);
1393 strv_free(m
->transient_environment
);
1394 strv_free(m
->client_environment
);
1396 hashmap_free(m
->cgroup_unit
);
1397 manager_free_unit_name_maps(m
);
1399 free(m
->switch_root
);
1400 free(m
->switch_root_init
);
1402 rlimit_free_all(m
->rlimit
);
1404 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1405 hashmap_free(m
->units_requiring_mounts_for
);
1407 hashmap_free(m
->uid_refs
);
1408 hashmap_free(m
->gid_refs
);
1410 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1411 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1416 static void manager_enumerate_perpetual(Manager
*m
) {
1421 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1424 /* Let's ask every type to load all units from disk/kernel that it might know */
1425 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1426 if (!unit_type_supported(c
)) {
1427 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1431 if (unit_vtable
[c
]->enumerate_perpetual
)
1432 unit_vtable
[c
]->enumerate_perpetual(m
);
1436 static void manager_enumerate(Manager
*m
) {
1441 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1444 /* Let's ask every type to load all units from disk/kernel that it might know */
1445 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1446 if (!unit_type_supported(c
)) {
1447 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1451 if (unit_vtable
[c
]->enumerate
)
1452 unit_vtable
[c
]->enumerate(m
);
1455 manager_dispatch_load_queue(m
);
1458 static void manager_coldplug(Manager
*m
) {
1466 log_debug("Invoking unit coldplug() handlers…");
1468 /* Let's place the units back into their deserialized state */
1469 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1471 /* ignore aliases */
1475 r
= unit_coldplug(u
);
1477 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1481 static void manager_catchup(Manager
*m
) {
1488 log_debug("Invoking unit catchup() handlers…");
1490 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1491 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1493 /* ignore aliases */
1501 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1507 HASHMAP_FOREACH(u
, m
->units
, i
) {
1509 if (fdset_size(fds
) <= 0)
1512 if (!UNIT_VTABLE(u
)->distribute_fds
)
1515 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1519 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1524 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1525 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1526 * rather than the current one. */
1528 if (MANAGER_IS_TEST_RUN(m
))
1531 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1534 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1537 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1540 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1546 static void manager_setup_bus(Manager
*m
) {
1549 /* Let's set up our private bus connection now, unconditionally */
1550 (void) bus_init_private(m
);
1552 /* If we are in --user mode also connect to the system bus now */
1553 if (MANAGER_IS_USER(m
))
1554 (void) bus_init_system(m
);
1556 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1557 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1558 (void) bus_init_api(m
);
1560 if (MANAGER_IS_SYSTEM(m
))
1561 (void) bus_init_system(m
);
1565 static void manager_preset_all(Manager
*m
) {
1570 if (m
->first_boot
<= 0)
1573 if (!MANAGER_IS_SYSTEM(m
))
1576 if (MANAGER_IS_TEST_RUN(m
))
1579 /* If this is the first boot, and we are in the host system, then preset everything */
1580 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1582 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1583 "Failed to populate /etc with preset unit settings, ignoring: %m");
1585 log_info("Populated /etc with preset unit settings.");
1588 static void manager_vacuum(Manager
*m
) {
1591 /* Release any dynamic users no longer referenced */
1592 dynamic_user_vacuum(m
, true);
1594 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1595 manager_vacuum_uid_refs(m
);
1596 manager_vacuum_gid_refs(m
);
1598 /* Release any runtimes no longer referenced */
1599 exec_runtime_vacuum(m
);
1602 static void manager_ready(Manager
*m
) {
1605 /* After having loaded everything, do the final round of catching up with what might have changed */
1607 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1609 /* It might be safe to log to the journal now and connect to dbus */
1610 manager_recheck_journal(m
);
1611 manager_recheck_dbus(m
);
1613 /* Sync current state of bus names with our set of listening units */
1614 (void) manager_enqueue_sync_bus_names(m
);
1616 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1619 m
->honor_device_enumeration
= true;
1622 static Manager
* manager_reloading_start(Manager
*m
) {
1626 static void manager_reloading_stopp(Manager
**m
) {
1628 assert((*m
)->n_reloading
> 0);
1629 (*m
)->n_reloading
--;
1633 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1638 /* If we are running in test mode, we still want to run the generators,
1639 * but we should not touch the real generator directories. */
1640 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1641 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1644 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1646 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1647 r
= manager_run_environment_generators(m
);
1649 r
= manager_run_generators(m
);
1650 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1654 manager_preset_all(m
);
1656 lookup_paths_log(&m
->lookup_paths
);
1659 /* This block is (optionally) done with the reloading counter bumped */
1660 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1662 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1663 * counter here already */
1665 reloading
= manager_reloading_start(m
);
1667 /* First, enumerate what we can from all config files */
1668 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1669 manager_enumerate_perpetual(m
);
1670 manager_enumerate(m
);
1671 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1673 /* Second, deserialize if there is something to deserialize */
1674 if (serialization
) {
1675 r
= manager_deserialize(m
, serialization
, fds
);
1677 return log_error_errno(r
, "Deserialization failed: %m");
1680 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1681 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1683 manager_distribute_fds(m
, fds
);
1685 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1686 r
= manager_setup_notify(m
);
1688 /* No sense to continue without notifications, our children would fail anyway. */
1691 r
= manager_setup_cgroups_agent(m
);
1693 /* Likewise, no sense to continue without empty cgroup notifications. */
1696 r
= manager_setup_user_lookup_fd(m
);
1698 /* This shouldn't fail, except if things are really broken. */
1701 /* Connect to the bus if we are good for it */
1702 manager_setup_bus(m
);
1704 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1705 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1707 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1708 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1710 /* Third, fire things up! */
1711 manager_coldplug(m
);
1713 /* Clean up runtime objects */
1717 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1718 * reload is finished */
1719 m
->send_reloading_done
= true;
1727 int manager_add_job(
1733 sd_bus_error
*error
,
1740 assert(type
< _JOB_TYPE_MAX
);
1742 assert(mode
< _JOB_MODE_MAX
);
1744 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1745 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1747 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1748 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1750 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1751 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1753 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1755 type
= job_type_collapse(type
, unit
);
1757 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1761 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1762 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1763 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1767 if (mode
== JOB_ISOLATE
) {
1768 r
= transaction_add_isolate_jobs(tr
, m
);
1773 if (mode
== JOB_TRIGGERING
) {
1774 r
= transaction_add_triggering_jobs(tr
, unit
);
1779 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1783 log_unit_debug(unit
,
1784 "Enqueued job %s/%s as %u", unit
->id
,
1785 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1788 *ret
= tr
->anchor_job
;
1790 transaction_free(tr
);
1794 transaction_abort(tr
);
1795 transaction_free(tr
);
1799 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1800 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1804 assert(type
< _JOB_TYPE_MAX
);
1806 assert(mode
< _JOB_MODE_MAX
);
1808 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1813 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1816 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1817 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1821 assert(type
< _JOB_TYPE_MAX
);
1823 assert(mode
< _JOB_MODE_MAX
);
1825 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1827 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1832 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1838 assert(mode
< _JOB_MODE_MAX
);
1839 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1841 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1845 /* We need an anchor job */
1846 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1850 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1851 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1853 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1857 transaction_free(tr
);
1861 transaction_abort(tr
);
1862 transaction_free(tr
);
1866 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1869 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1872 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1876 return hashmap_get(m
->units
, name
);
1879 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1884 static const UnitDependency deps
[] = {
1893 while ((u
= m
->target_deps_queue
)) {
1894 assert(u
->in_target_deps_queue
);
1896 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1897 u
->in_target_deps_queue
= false;
1899 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1904 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1905 r
= unit_add_default_target_dependency(u
, target
);
1915 unsigned manager_dispatch_load_queue(Manager
*m
) {
1921 /* Make sure we are not run recursively */
1922 if (m
->dispatching_load_queue
)
1925 m
->dispatching_load_queue
= true;
1927 /* Dispatches the load queue. Takes a unit from the queue and
1928 * tries to load its data until the queue is empty */
1930 while ((u
= m
->load_queue
)) {
1931 assert(u
->in_load_queue
);
1937 m
->dispatching_load_queue
= false;
1939 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1940 * should be loaded and have aliases resolved */
1941 (void) manager_dispatch_target_deps_queue(m
);
1946 int manager_load_unit_prepare(
1953 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1959 assert(name
|| path
);
1962 /* This will prepare the unit for loading, but not actually
1963 * load anything from disk. */
1965 if (path
&& !is_path(path
))
1966 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1969 name
= basename(path
);
1971 t
= unit_name_to_type(name
);
1973 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1974 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1975 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1977 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1980 ret
= manager_get_unit(m
, name
);
1986 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1991 ret
->fragment_path
= strdup(path
);
1992 if (!ret
->fragment_path
)
1996 r
= unit_add_name(ret
, name
);
2000 unit_add_to_load_queue(ret
);
2001 unit_add_to_dbus_queue(ret
);
2002 unit_add_to_gc_queue(ret
);
2010 int manager_load_unit(
2022 /* This will load the service information files, but not actually
2023 * start any services or anything. */
2025 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2029 manager_dispatch_load_queue(m
);
2031 *_ret
= unit_follow_merge(*_ret
);
2035 int manager_load_startable_unit_or_warn(
2041 /* Load a unit, make sure it loaded fully and is not masked. */
2043 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2047 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2049 return log_error_errno(r
, "Failed to load %s %s: %s",
2050 name
? "unit" : "unit file", name
?: path
,
2051 bus_error_message(&error
, r
));
2053 r
= bus_unit_validate_load_state(unit
, &error
);
2055 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2061 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2068 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2069 job_dump(j
, f
, prefix
);
2072 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2080 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2082 unit_dump(u
, f
, prefix
);
2085 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2091 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2092 const dual_timestamp
*t
= m
->timestamps
+ q
;
2093 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2095 if (dual_timestamp_is_set(t
))
2096 fprintf(f
, "%sTimestamp %s: %s\n",
2098 manager_timestamp_to_string(q
),
2099 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2100 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2103 manager_dump_units(m
, f
, prefix
);
2104 manager_dump_jobs(m
, f
, prefix
);
2107 int manager_get_dump_string(Manager
*m
, char **ret
) {
2108 _cleanup_free_
char *dump
= NULL
;
2109 _cleanup_fclose_
FILE *f
= NULL
;
2116 f
= open_memstream_unlocked(&dump
, &size
);
2120 manager_dump(m
, f
, NULL
);
2122 r
= fflush_and_check(f
);
2128 *ret
= TAKE_PTR(dump
);
2133 void manager_clear_jobs(Manager
*m
) {
2138 while ((j
= hashmap_first(m
->jobs
)))
2139 /* No need to recurse. We're cancelling all jobs. */
2140 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2143 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2146 /* First let's drop the unit keyed as "pid". */
2147 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2149 /* Then, let's also drop the array keyed by -pid. */
2150 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2153 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2154 Manager
*m
= userdata
;
2160 while ((j
= prioq_peek(m
->run_queue
))) {
2161 assert(j
->installed
);
2162 assert(j
->in_run_queue
);
2164 (void) job_run_and_invalidate(j
);
2167 if (m
->n_running_jobs
> 0)
2168 manager_watch_jobs_in_progress(m
);
2170 if (m
->n_on_console
> 0)
2171 manager_watch_idle_pipe(m
);
2176 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2177 unsigned n
= 0, budget
;
2183 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2184 * as we can. There's no point in throttling generation of signals in that case. */
2185 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2186 budget
= (unsigned) -1; /* infinite budget in this case */
2188 /* Anything to do at all? */
2189 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2192 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2193 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2194 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2197 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2198 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2199 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2200 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2201 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2202 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2203 * connections it will be counted five times. This difference in counting ("references"
2204 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2205 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2206 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2207 * currently chosen much higher than the "budget". */
2208 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2211 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2213 assert(u
->in_dbus_queue
);
2215 bus_unit_send_change_signal(u
);
2218 if (budget
!= (unsigned) -1)
2222 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2223 assert(j
->in_dbus_queue
);
2225 bus_job_send_change_signal(j
);
2228 if (budget
!= (unsigned) -1)
2232 if (m
->send_reloading_done
) {
2233 m
->send_reloading_done
= false;
2234 bus_manager_send_reloading(m
, false);
2238 if (m
->pending_reload_message
) {
2239 bus_send_pending_reload_message(m
);
2246 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2247 Manager
*m
= userdata
;
2251 n
= recv(fd
, buf
, sizeof(buf
), 0);
2253 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2255 log_error("Got zero-length cgroups agent message, ignoring.");
2258 if ((size_t) n
>= sizeof(buf
)) {
2259 log_error("Got overly long cgroups agent message, ignoring.");
2263 if (memchr(buf
, 0, n
)) {
2264 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2269 manager_notify_cgroup_empty(m
, buf
);
2270 (void) bus_forward_agent_released(m
, buf
);
2275 static void manager_invoke_notify_message(
2278 const struct ucred
*ucred
,
2287 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2289 u
->notifygen
= m
->notifygen
;
2291 if (UNIT_VTABLE(u
)->notify_message
) {
2292 _cleanup_strv_free_
char **tags
= NULL
;
2294 tags
= strv_split(buf
, NEWLINE
);
2300 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2302 } else if (DEBUG_LOGGING
) {
2303 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2305 x
= ellipsize(buf
, 20, 90);
2309 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2313 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2315 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2316 Manager
*m
= userdata
;
2317 char buf
[NOTIFY_BUFFER_MAX
+1];
2318 struct iovec iovec
= {
2320 .iov_len
= sizeof(buf
)-1,
2323 struct cmsghdr cmsghdr
;
2324 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2325 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2327 struct msghdr msghdr
= {
2330 .msg_control
= &control
,
2331 .msg_controllen
= sizeof(control
),
2334 struct cmsghdr
*cmsg
;
2335 struct ucred
*ucred
= NULL
;
2336 _cleanup_free_ Unit
**array_copy
= NULL
;
2337 Unit
*u1
, *u2
, **array
;
2338 int r
, *fd_array
= NULL
;
2344 assert(m
->notify_fd
== fd
);
2346 if (revents
!= EPOLLIN
) {
2347 log_warning("Got unexpected poll event for notify fd.");
2351 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2353 if (IN_SET(errno
, EAGAIN
, EINTR
))
2354 return 0; /* Spurious wakeup, try again */
2356 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2357 * won't take notification messages anymore, but that's still better than busy looping around this:
2358 * being woken up over and over again but being unable to actually read the message off the socket. */
2359 return log_error_errno(errno
, "Failed to receive notification message: %m");
2362 CMSG_FOREACH(cmsg
, &msghdr
) {
2363 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2365 fd_array
= (int*) CMSG_DATA(cmsg
);
2366 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2368 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2369 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2370 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2372 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2379 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2381 close_many(fd_array
, n_fds
);
2387 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2388 log_warning("Received notify message without valid credentials. Ignoring.");
2392 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2393 log_warning("Received notify message exceeded maximum size. Ignoring.");
2397 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2398 * trailing NUL byte in the message, but don't expect it. */
2399 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2400 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2404 /* Make sure it's NUL-terminated. */
2407 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2410 /* Notify every unit that might be interested, which might be multiple. */
2411 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2412 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2413 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2420 array_copy
= newdup(Unit
*, array
, k
+1);
2424 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2425 * make sure we only invoke each unit's handler once. */
2427 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2431 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2435 for (size_t i
= 0; array_copy
[i
]; i
++) {
2436 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2441 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2443 if (fdset_size(fds
) > 0)
2444 log_warning("Got extra auxiliary fds with notification message, closing them.");
2449 static void manager_invoke_sigchld_event(
2452 const siginfo_t
*si
) {
2458 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2459 if (u
->sigchldgen
== m
->sigchldgen
)
2461 u
->sigchldgen
= m
->sigchldgen
;
2463 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2464 unit_unwatch_pid(u
, si
->si_pid
);
2466 if (UNIT_VTABLE(u
)->sigchld_event
)
2467 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2470 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2471 Manager
*m
= userdata
;
2478 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2479 * while it is a zombie. */
2481 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2483 if (errno
!= ECHILD
)
2484 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2492 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2493 _cleanup_free_ Unit
**array_copy
= NULL
;
2494 _cleanup_free_
char *name
= NULL
;
2495 Unit
*u1
, *u2
, **array
;
2497 (void) get_process_comm(si
.si_pid
, &name
);
2499 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2500 si
.si_pid
, strna(name
),
2501 sigchld_code_to_string(si
.si_code
),
2503 strna(si
.si_code
== CLD_EXITED
2504 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2505 : signal_to_string(si
.si_status
)));
2507 /* Increase the generation counter used for filtering out duplicate unit invocations */
2510 /* And now figure out the unit this belongs to, it might be multiple... */
2511 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2512 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2513 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2517 /* Count how many entries the array has */
2521 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2522 array_copy
= newdup(Unit
*, array
, n
+1);
2527 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2528 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2529 * each iteration. */
2531 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2532 * We only do this for the cgroup the PID belonged to. */
2533 (void) unit_check_oom(u1
);
2535 manager_invoke_sigchld_event(m
, u1
, &si
);
2538 manager_invoke_sigchld_event(m
, u2
, &si
);
2540 for (size_t i
= 0; array_copy
[i
]; i
++)
2541 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2544 /* And now, we actually reap the zombie. */
2545 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2546 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2553 /* All children processed for now, turn off event source */
2555 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2557 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2562 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2563 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2566 log_debug("Activating special unit %s", name
);
2568 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2570 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2573 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2574 /* If the user presses C-A-D more than
2575 * 7 times within 2s, we reboot/shutdown immediately,
2576 * unless it was disabled in system.conf */
2578 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2579 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2581 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2582 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2585 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2586 Manager
*m
= userdata
;
2588 struct signalfd_siginfo sfsi
;
2592 assert(m
->signal_fd
== fd
);
2594 if (revents
!= EPOLLIN
) {
2595 log_warning("Got unexpected events from signal file descriptor.");
2599 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2600 if (n
!= sizeof(sfsi
)) {
2602 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2606 if (IN_SET(errno
, EINTR
, EAGAIN
))
2609 /* We return an error here, which will kill this handler,
2610 * to avoid a busy loop on read error. */
2611 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2614 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2615 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2616 ? LOG_DEBUG
: LOG_INFO
,
2619 switch (sfsi
.ssi_signo
) {
2622 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2624 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2629 if (MANAGER_IS_SYSTEM(m
)) {
2630 /* This is for compatibility with the original sysvinit */
2631 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2634 m
->objective
= MANAGER_REEXECUTE
;
2640 if (MANAGER_IS_SYSTEM(m
))
2641 manager_handle_ctrl_alt_del(m
);
2643 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2644 JOB_REPLACE_IRREVERSIBLY
);
2648 /* This is a nop on non-init */
2649 if (MANAGER_IS_SYSTEM(m
))
2650 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2655 /* This is a nop on non-init */
2656 if (MANAGER_IS_SYSTEM(m
))
2657 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2662 if (manager_dbus_is_running(m
, false)) {
2663 log_info("Trying to reconnect to bus...");
2665 (void) bus_init_api(m
);
2667 if (MANAGER_IS_SYSTEM(m
))
2668 (void) bus_init_system(m
);
2670 log_info("Starting D-Bus service...");
2671 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2677 _cleanup_free_
char *dump
= NULL
;
2679 r
= manager_get_dump_string(m
, &dump
);
2681 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2685 log_dump(LOG_INFO
, dump
);
2690 if (verify_run_space_and_log("Refusing to reload") < 0)
2693 m
->objective
= MANAGER_RELOAD
;
2698 /* Starting SIGRTMIN+0 */
2699 static const struct {
2702 } target_table
[] = {
2703 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2704 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2705 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2706 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2707 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2708 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2709 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2712 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2713 static const ManagerObjective objective_table
[] = {
2715 [1] = MANAGER_POWEROFF
,
2716 [2] = MANAGER_REBOOT
,
2717 [3] = MANAGER_KEXEC
,
2720 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2721 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2722 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2723 manager_start_target(m
, target_table
[idx
].target
,
2724 target_table
[idx
].mode
);
2728 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2729 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2730 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2734 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2737 manager_set_show_status(m
, SHOW_STATUS_YES
);
2741 manager_set_show_status(m
, SHOW_STATUS_NO
);
2745 manager_override_log_level(m
, LOG_DEBUG
);
2749 manager_restore_original_log_level(m
);
2753 if (MANAGER_IS_USER(m
)) {
2754 m
->objective
= MANAGER_EXIT
;
2758 /* This is a nop on init */
2762 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2763 manager_restore_original_log_target(m
);
2767 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2771 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2775 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2782 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2783 Manager
*m
= userdata
;
2788 assert(m
->time_change_fd
== fd
);
2790 log_struct(LOG_DEBUG
,
2791 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2792 LOG_MESSAGE("Time has been changed"));
2794 /* Restart the watch */
2795 (void) manager_setup_time_change(m
);
2797 HASHMAP_FOREACH(u
, m
->units
, i
)
2798 if (UNIT_VTABLE(u
)->time_change
)
2799 UNIT_VTABLE(u
)->time_change(u
);
2804 static int manager_dispatch_timezone_change(
2805 sd_event_source
*source
,
2806 const struct inotify_event
*e
,
2809 Manager
*m
= userdata
;
2816 log_debug("inotify event for /etc/localtime");
2818 changed
= manager_read_timezone_stat(m
);
2822 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2823 (void) manager_setup_timezone_change(m
);
2825 /* Read the new timezone */
2828 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2830 HASHMAP_FOREACH(u
, m
->units
, i
)
2831 if (UNIT_VTABLE(u
)->timezone_change
)
2832 UNIT_VTABLE(u
)->timezone_change(u
);
2837 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2838 Manager
*m
= userdata
;
2841 assert(m
->idle_pipe
[2] == fd
);
2843 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2844 * now turn off any further console output if there's at least one service that needs console access, so that
2845 * from now on our own output should not spill into that service's output anymore. After all, we support
2846 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2847 * exclusively without our interference. */
2848 m
->no_console_output
= m
->n_on_console
> 0;
2850 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2851 * by closing the pipes towards them, which is what they are waiting for. */
2852 manager_close_idle_pipe(m
);
2857 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2858 Manager
*m
= userdata
;
2865 manager_print_jobs_in_progress(m
);
2867 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2868 r
= sd_event_source_set_time(source
, next
);
2872 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2875 int manager_loop(Manager
*m
) {
2876 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2880 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2882 manager_check_finished(m
);
2884 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2885 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2887 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2889 while (m
->objective
== MANAGER_OK
) {
2892 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2895 if (!ratelimit_below(&rl
)) {
2896 /* Yay, something is going seriously wrong, pause a little */
2897 log_warning("Looping too fast. Throttling execution a little.");
2901 if (manager_dispatch_load_queue(m
) > 0)
2904 if (manager_dispatch_gc_job_queue(m
) > 0)
2907 if (manager_dispatch_gc_unit_queue(m
) > 0)
2910 if (manager_dispatch_cleanup_queue(m
) > 0)
2913 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2916 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2919 if (manager_dispatch_dbus_queue(m
) > 0)
2922 /* Sleep for half the watchdog time */
2923 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2924 wait_usec
= m
->runtime_watchdog
/ 2;
2928 wait_usec
= USEC_INFINITY
;
2930 r
= sd_event_run(m
->event
, wait_usec
);
2932 return log_error_errno(r
, "Failed to run event loop: %m");
2935 return m
->objective
;
2938 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2939 _cleanup_free_
char *n
= NULL
;
2940 sd_id128_t invocation_id
;
2948 r
= unit_name_from_dbus_path(s
, &n
);
2952 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2953 * as invocation ID. */
2954 r
= sd_id128_from_string(n
, &invocation_id
);
2956 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2962 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2963 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2964 SD_ID128_FORMAT_VAL(invocation_id
));
2967 /* If this didn't work, we check if this is a unit name */
2968 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2969 _cleanup_free_
char *nn
= NULL
;
2972 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2973 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2976 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2984 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2994 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2998 r
= safe_atou(p
, &id
);
3002 j
= manager_get_job(m
, id
);
3011 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3014 _cleanup_free_
char *p
= NULL
;
3018 if (!MANAGER_IS_SYSTEM(m
))
3021 audit_fd
= get_audit_fd();
3025 /* Don't generate audit events if the service was already
3026 * started and we're just deserializing */
3027 if (MANAGER_IS_RELOADING(m
))
3030 if (u
->type
!= UNIT_SERVICE
)
3033 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3035 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3039 msg
= strjoina("unit=", p
);
3040 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3042 /* We aren't allowed to send audit messages?
3043 * Then let's not retry again. */
3046 log_warning_errno(errno
, "Failed to send audit message: %m");
3052 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3053 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3054 _cleanup_free_
char *message
= NULL
;
3055 _cleanup_close_
int fd
= -1;
3058 /* Don't generate plymouth events if the service was already
3059 * started and we're just deserializing */
3060 if (MANAGER_IS_RELOADING(m
))
3063 if (!MANAGER_IS_SYSTEM(m
))
3066 if (detect_container() > 0)
3069 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3072 /* We set SOCK_NONBLOCK here so that we rather drop the
3073 * message then wait for plymouth */
3074 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3076 log_error_errno(errno
, "socket() failed: %m");
3080 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3081 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3082 log_error_errno(errno
, "connect() failed: %m");
3086 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3092 if (write(fd
, message
, n
+ 1) != n
+ 1)
3093 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3094 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3097 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3103 fd
= open_serialization_fd("systemd-state");
3107 f
= fdopen(fd
, "w+");
3117 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3122 /* The following timestamps only apply to the host system, hence only serialize them there */
3124 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3125 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3126 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3127 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3130 int manager_serialize(
3134 bool switching_root
) {
3146 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3148 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3149 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3150 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3151 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3152 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3153 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3154 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3156 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3157 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3159 t
= show_status_to_string(m
->show_status
);
3161 (void) serialize_item(f
, "show-status", t
);
3163 if (m
->log_level_overridden
)
3164 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3165 if (m
->log_target_overridden
)
3166 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3168 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3169 _cleanup_free_
char *joined
= NULL
;
3171 if (!manager_timestamp_shall_serialize(q
))
3174 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3178 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3181 if (!switching_root
)
3182 (void) serialize_strv(f
, "env", m
->client_environment
);
3184 if (m
->notify_fd
>= 0) {
3185 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3189 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3192 if (m
->cgroups_agent_fd
>= 0) {
3193 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3198 if (m
->user_lookup_fds
[0] >= 0) {
3201 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3203 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3205 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3207 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3209 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3212 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3214 r
= dynamic_user_serialize(m
, f
, fds
);
3218 manager_serialize_uid_refs(m
, f
);
3219 manager_serialize_gid_refs(m
, f
);
3221 r
= exec_runtime_serialize(m
, f
, fds
);
3225 (void) fputc('\n', f
);
3227 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3235 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3240 r
= fflush_and_check(f
);
3242 return log_error_errno(r
, "Failed to flush serialization: %m");
3244 r
= bus_fdset_add_all(m
, fds
);
3246 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3251 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3255 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3259 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3262 r
= unit_deserialize(u
, f
, fds
);
3266 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3272 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3273 const char *unit_name
;
3277 _cleanup_free_
char *line
= NULL
;
3279 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3281 return log_error_errno(r
, "Failed to read serialization line: %m");
3285 unit_name
= strstrip(line
);
3287 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3291 r
= unit_deserialize_skip(f
);
3300 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3306 log_debug("Deserializing state...");
3308 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3309 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3311 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3314 _cleanup_free_
char *line
= NULL
;
3315 const char *val
, *l
;
3317 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3319 return log_error_errno(r
, "Failed to read serialization line: %m");
3324 if (isempty(l
)) /* end marker */
3327 if ((val
= startswith(l
, "current-job-id="))) {
3330 if (safe_atou32(val
, &id
) < 0)
3331 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3333 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3335 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3338 if (safe_atou32(val
, &n
) < 0)
3339 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3341 m
->n_installed_jobs
+= n
;
3343 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3346 if (safe_atou32(val
, &n
) < 0)
3347 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3349 m
->n_failed_jobs
+= n
;
3351 } else if ((val
= startswith(l
, "taint-usr="))) {
3354 b
= parse_boolean(val
);
3356 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3358 m
->taint_usr
= m
->taint_usr
|| b
;
3360 } else if ((val
= startswith(l
, "ready-sent="))) {
3363 b
= parse_boolean(val
);
3365 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3367 m
->ready_sent
= m
->ready_sent
|| b
;
3369 } else if ((val
= startswith(l
, "taint-logged="))) {
3372 b
= parse_boolean(val
);
3374 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3376 m
->taint_logged
= m
->taint_logged
|| b
;
3378 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3381 b
= parse_boolean(val
);
3383 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3385 m
->service_watchdogs
= b
;
3387 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3390 b
= parse_boolean(val
);
3392 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3394 m
->honor_device_enumeration
= b
;
3396 } else if ((val
= startswith(l
, "show-status="))) {
3399 s
= show_status_from_string(val
);
3401 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3403 manager_set_show_status(m
, s
);
3405 } else if ((val
= startswith(l
, "log-level-override="))) {
3408 level
= log_level_from_string(val
);
3410 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3412 manager_override_log_level(m
, level
);
3414 } else if ((val
= startswith(l
, "log-target-override="))) {
3417 target
= log_target_from_string(val
);
3419 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3421 manager_override_log_target(m
, target
);
3423 } else if (startswith(l
, "env=")) {
3424 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3426 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3428 } else if ((val
= startswith(l
, "notify-fd="))) {
3431 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3432 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3434 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3435 safe_close(m
->notify_fd
);
3436 m
->notify_fd
= fdset_remove(fds
, fd
);
3439 } else if ((val
= startswith(l
, "notify-socket="))) {
3440 r
= free_and_strdup(&m
->notify_socket
, val
);
3444 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3447 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3448 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3450 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3451 safe_close(m
->cgroups_agent_fd
);
3452 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3455 } else if ((val
= startswith(l
, "user-lookup="))) {
3458 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3459 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3461 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3462 safe_close_pair(m
->user_lookup_fds
);
3463 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3464 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3467 } else if ((val
= startswith(l
, "dynamic-user=")))
3468 dynamic_user_deserialize_one(m
, val
, fds
);
3469 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3470 manager_deserialize_uid_refs_one(m
, val
);
3471 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3472 manager_deserialize_gid_refs_one(m
, val
);
3473 else if ((val
= startswith(l
, "exec-runtime=")))
3474 exec_runtime_deserialize_one(m
, val
, fds
);
3475 else if ((val
= startswith(l
, "subscribed="))) {
3477 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3483 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3484 val
= startswith(l
, manager_timestamp_to_string(q
));
3488 val
= startswith(val
, "-timestamp=");
3493 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3494 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3495 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3496 log_notice("Unknown serialization item '%s', ignoring.", l
);
3500 return manager_deserialize_units(m
, f
, fds
);
3503 int manager_reload(Manager
*m
) {
3504 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3505 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3506 _cleanup_fclose_
FILE *f
= NULL
;
3511 r
= manager_open_serialization(m
, &f
);
3513 return log_error_errno(r
, "Failed to create serialization file: %m");
3519 /* We are officially in reload mode from here on. */
3520 reloading
= manager_reloading_start(m
);
3522 r
= manager_serialize(m
, f
, fds
, false);
3526 if (fseeko(f
, 0, SEEK_SET
) < 0)
3527 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3529 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3532 bus_manager_send_reloading(m
, true);
3534 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3535 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3538 manager_clear_jobs_and_units(m
);
3539 lookup_paths_flush_generator(&m
->lookup_paths
);
3540 lookup_paths_free(&m
->lookup_paths
);
3541 exec_runtime_vacuum(m
);
3542 dynamic_user_vacuum(m
, false);
3543 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3544 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3546 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3548 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3550 (void) manager_run_environment_generators(m
);
3551 (void) manager_run_generators(m
);
3553 lookup_paths_log(&m
->lookup_paths
);
3555 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3556 manager_free_unit_name_maps(m
);
3558 /* First, enumerate what we can from kernel and suchlike */
3559 manager_enumerate_perpetual(m
);
3560 manager_enumerate(m
);
3562 /* Second, deserialize our stored data */
3563 r
= manager_deserialize(m
, f
, fds
);
3565 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3567 /* We don't need the serialization anymore */
3570 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3571 (void) manager_setup_notify(m
);
3572 (void) manager_setup_cgroups_agent(m
);
3573 (void) manager_setup_user_lookup_fd(m
);
3575 /* Third, fire things up! */
3576 manager_coldplug(m
);
3578 /* Clean up runtime objects no longer referenced */
3581 /* Consider the reload process complete now. */
3582 assert(m
->n_reloading
> 0);
3585 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3586 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3587 * let's always set the flag here for safety. */
3588 m
->honor_device_enumeration
= true;
3592 m
->send_reloading_done
= true;
3596 void manager_reset_failed(Manager
*m
) {
3602 HASHMAP_FOREACH(u
, m
->units
, i
)
3603 unit_reset_failed(u
);
3606 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3612 /* Returns true if the unit is inactive or going down */
3613 u
= manager_get_unit(m
, name
);
3617 return unit_inactive_or_pending(u
);
3620 static void log_taint_string(Manager
*m
) {
3621 _cleanup_free_
char *taint
= NULL
;
3625 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3628 m
->taint_logged
= true; /* only check for taint once */
3630 taint
= manager_taint_string(m
);
3634 log_struct(LOG_NOTICE
,
3635 LOG_MESSAGE("System is tainted: %s", taint
),
3637 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3640 static void manager_notify_finished(Manager
*m
) {
3641 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3642 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3644 if (MANAGER_IS_TEST_RUN(m
))
3647 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3648 char ts
[FORMAT_TIMESPAN_MAX
];
3649 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3652 size_t size
= sizeof buf
;
3654 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3655 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3656 * negative values. */
3658 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3659 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3660 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3661 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3663 if (firmware_usec
> 0)
3664 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3665 if (loader_usec
> 0)
3666 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3668 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3670 /* The initrd case on bare-metal*/
3671 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3672 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3674 log_struct(LOG_INFO
,
3675 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3676 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3677 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3678 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3679 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3681 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3682 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3683 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3684 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3686 /* The initrd-less case on bare-metal*/
3688 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3691 log_struct(LOG_INFO
,
3692 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3693 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3694 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3695 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3697 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3698 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3699 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3702 /* The container and --user case */
3703 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3704 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3706 log_struct(LOG_INFO
,
3707 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3708 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3709 LOG_MESSAGE("Startup finished in %s.",
3710 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3713 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3716 m
->ready_sent
? "STATUS=Startup finished in %s."
3718 "STATUS=Startup finished in %s.",
3719 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3720 m
->ready_sent
= true;
3722 log_taint_string(m
);
3725 static void manager_send_ready(Manager
*m
) {
3728 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3729 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3732 m
->ready_sent
= true;
3736 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3739 static void manager_check_basic_target(Manager
*m
) {
3744 /* Small shortcut */
3745 if (m
->ready_sent
&& m
->taint_logged
)
3748 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3749 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3752 /* For user managers, send out READY=1 as soon as we reach basic.target */
3753 manager_send_ready(m
);
3755 /* Log the taint string as soon as we reach basic.target */
3756 log_taint_string(m
);
3759 void manager_check_finished(Manager
*m
) {
3762 if (MANAGER_IS_RELOADING(m
))
3765 /* Verify that we have entered the event loop already, and not left it again. */
3766 if (!MANAGER_IS_RUNNING(m
))
3769 manager_check_basic_target(m
);
3771 if (hashmap_size(m
->jobs
) > 0) {
3772 if (m
->jobs_in_progress_event_source
)
3773 /* Ignore any failure, this is only for feedback */
3774 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3779 manager_flip_auto_status(m
, false);
3781 /* Notify Type=idle units that we are done now */
3782 manager_close_idle_pipe(m
);
3784 /* Turn off confirm spawn now */
3785 m
->confirm_spawn
= NULL
;
3787 /* No need to update ask password status when we're going non-interactive */
3788 manager_close_ask_password(m
);
3790 /* This is no longer the first boot */
3791 manager_set_first_boot(m
, false);
3793 if (MANAGER_IS_FINISHED(m
))
3796 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3798 manager_notify_finished(m
);
3800 manager_invalidate_startup_units(m
);
3803 static bool generator_path_any(const char* const* paths
) {
3807 /* Optimize by skipping the whole process by not creating output directories
3808 * if no generators are found. */
3809 STRV_FOREACH(path
, (char**) paths
)
3810 if (access(*path
, F_OK
) == 0)
3812 else if (errno
!= ENOENT
)
3813 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3818 static const char *const system_env_generator_binary_paths
[] = {
3819 "/run/systemd/system-environment-generators",
3820 "/etc/systemd/system-environment-generators",
3821 "/usr/local/lib/systemd/system-environment-generators",
3822 SYSTEM_ENV_GENERATOR_PATH
,
3826 static const char *const user_env_generator_binary_paths
[] = {
3827 "/run/systemd/user-environment-generators",
3828 "/etc/systemd/user-environment-generators",
3829 "/usr/local/lib/systemd/user-environment-generators",
3830 USER_ENV_GENERATOR_PATH
,
3834 static int manager_run_environment_generators(Manager
*m
) {
3835 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3836 const char *const *paths
;
3838 [STDOUT_GENERATE
] = &tmp
,
3839 [STDOUT_COLLECT
] = &tmp
,
3840 [STDOUT_CONSUME
] = &m
->transient_environment
,
3844 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3847 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3849 if (!generator_path_any(paths
))
3852 RUN_WITH_UMASK(0022)
3853 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3854 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3858 static int manager_run_generators(Manager
*m
) {
3859 _cleanup_strv_free_
char **paths
= NULL
;
3860 const char *argv
[5];
3865 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3868 paths
= generator_binary_paths(m
->unit_file_scope
);
3872 if (!generator_path_any((const char* const*) paths
))
3875 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3877 log_error_errno(r
, "Failed to create generator directories: %m");
3881 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3882 argv
[1] = m
->lookup_paths
.generator
;
3883 argv
[2] = m
->lookup_paths
.generator_early
;
3884 argv
[3] = m
->lookup_paths
.generator_late
;
3887 RUN_WITH_UMASK(0022)
3888 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3889 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3894 lookup_paths_trim_generator(&m
->lookup_paths
);
3898 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3903 if (strv_isempty(plus
))
3906 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3910 sanitize_environment(a
);
3912 return strv_free_and_replace(m
->transient_environment
, a
);
3915 int manager_client_environment_modify(
3920 char **a
= NULL
, **b
= NULL
, **l
;
3924 if (strv_isempty(minus
) && strv_isempty(plus
))
3927 l
= m
->client_environment
;
3929 if (!strv_isempty(minus
)) {
3930 a
= strv_env_delete(l
, 1, minus
);
3937 if (!strv_isempty(plus
)) {
3938 b
= strv_env_merge(2, l
, plus
);
3947 if (m
->client_environment
!= l
)
3948 strv_free(m
->client_environment
);
3955 m
->client_environment
= sanitize_environment(l
);
3959 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3965 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3973 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3978 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3979 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3981 if (!default_rlimit
[i
])
3984 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3992 void manager_recheck_dbus(Manager
*m
) {
3995 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3996 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3997 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3998 * while in the user instance we can assume it's already there. */
4000 if (MANAGER_IS_RELOADING(m
))
4001 return; /* don't check while we are reloading… */
4003 if (manager_dbus_is_running(m
, false)) {
4004 (void) bus_init_api(m
);
4006 if (MANAGER_IS_SYSTEM(m
))
4007 (void) bus_init_system(m
);
4009 (void) bus_done_api(m
);
4011 if (MANAGER_IS_SYSTEM(m
))
4012 (void) bus_done_system(m
);
4016 static bool manager_journal_is_running(Manager
*m
) {
4021 if (MANAGER_IS_TEST_RUN(m
))
4024 /* If we are the user manager we can safely assume that the journal is up */
4025 if (!MANAGER_IS_SYSTEM(m
))
4028 /* Check that the socket is not only up, but in RUNNING state */
4029 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4032 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4035 /* Similar, check if the daemon itself is fully up, too */
4036 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4039 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4045 void disable_printk_ratelimit(void) {
4046 /* Disable kernel's printk ratelimit.
4048 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4049 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4050 * setting takes precedence. */
4053 r
= sysctl_write("kernel/printk_devkmsg", "on");
4055 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4058 void manager_recheck_journal(Manager
*m
) {
4062 /* Don't bother with this unless we are in the special situation of being PID 1 */
4063 if (getpid_cached() != 1)
4066 /* Don't check this while we are reloading, things might still change */
4067 if (MANAGER_IS_RELOADING(m
))
4070 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4071 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4072 * an activation ourselves we can't fulfill. */
4073 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4077 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4079 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4081 if (!MANAGER_IS_SYSTEM(m
))
4084 if (m
->show_status
!= mode
)
4085 log_debug("%s showing of status.",
4086 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4087 m
->show_status
= mode
;
4089 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4090 (void) touch("/run/systemd/show-status");
4092 (void) unlink("/run/systemd/show-status");
4095 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4098 if (!MANAGER_IS_SYSTEM(m
))
4101 if (m
->no_console_output
)
4104 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4107 /* If we cannot find out the status properly, just proceed. */
4108 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4111 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4114 const char *manager_get_confirm_spawn(Manager
*m
) {
4115 static int last_errno
= 0;
4121 /* Here's the deal: we want to test the validity of the console but don't want
4122 * PID1 to go through the whole console process which might block. But we also
4123 * want to warn the user only once if something is wrong with the console so we
4124 * cannot do the sanity checks after spawning our children. So here we simply do
4125 * really basic tests to hopefully trap common errors.
4127 * If the console suddenly disappear at the time our children will really it
4128 * then they will simply fail to acquire it and a positive answer will be
4129 * assumed. New children will fallback to /dev/console though.
4131 * Note: TTYs are devices that can come and go any time, and frequently aren't
4132 * available yet during early boot (consider a USB rs232 dongle...). If for any
4133 * reason the configured console is not ready, we fallback to the default
4136 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4137 return m
->confirm_spawn
;
4139 if (stat(m
->confirm_spawn
, &st
) < 0) {
4144 if (!S_ISCHR(st
.st_mode
)) {
4150 return m
->confirm_spawn
;
4153 if (last_errno
!= r
)
4154 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4156 return "/dev/console";
4159 void manager_set_first_boot(Manager
*m
, bool b
) {
4162 if (!MANAGER_IS_SYSTEM(m
))
4165 if (m
->first_boot
!= (int) b
) {
4167 (void) touch("/run/systemd/first-boot");
4169 (void) unlink("/run/systemd/first-boot");
4175 void manager_disable_confirm_spawn(void) {
4176 (void) touch("/run/systemd/confirm_spawn_disabled");
4179 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4180 if (!m
->confirm_spawn
)
4183 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4186 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4189 /* If m is NULL, assume we're after shutdown and let the messages through. */
4191 if (m
&& !manager_get_show_status(m
, type
))
4194 /* XXX We should totally drop the check for ephemeral here
4195 * and thus effectively make 'Type=idle' pointless. */
4196 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4199 va_start(ap
, format
);
4200 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4204 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4205 char p
[strlen(path
)+1];
4211 path_simplify(p
, false);
4213 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4216 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4221 assert(u
->manager
== m
);
4223 size
= set_size(m
->failed_units
);
4226 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4230 if (set_put(m
->failed_units
, u
) < 0)
4233 (void) set_remove(m
->failed_units
, u
);
4235 if (set_size(m
->failed_units
) != size
)
4236 bus_manager_send_change_signal(m
);
4241 ManagerState
manager_state(Manager
*m
) {
4246 /* Did we ever finish booting? If not then we are still starting up */
4247 if (!MANAGER_IS_FINISHED(m
)) {
4249 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4250 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4251 return MANAGER_INITIALIZING
;
4253 return MANAGER_STARTING
;
4256 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4257 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4258 if (u
&& unit_active_or_pending(u
))
4259 return MANAGER_STOPPING
;
4261 if (MANAGER_IS_SYSTEM(m
)) {
4262 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4263 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4264 if (u
&& unit_active_or_pending(u
))
4265 return MANAGER_MAINTENANCE
;
4267 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4268 if (u
&& unit_active_or_pending(u
))
4269 return MANAGER_MAINTENANCE
;
4272 /* Are there any failed units? If so, we are in degraded mode */
4273 if (set_size(m
->failed_units
) > 0)
4274 return MANAGER_DEGRADED
;
4276 return MANAGER_RUNNING
;
4279 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4281 static void manager_unref_uid_internal(
4286 int (*_clean_ipc
)(uid_t uid
)) {
4292 assert(uid_is_valid(uid
));
4295 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4296 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4298 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4299 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4300 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4301 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4303 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4304 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4306 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4309 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4311 n
= c
& ~DESTROY_IPC_FLAG
;
4315 if (destroy_now
&& n
== 0) {
4316 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4318 if (c
& DESTROY_IPC_FLAG
) {
4319 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4320 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4322 (void) _clean_ipc(uid
);
4325 c
= n
| (c
& DESTROY_IPC_FLAG
);
4326 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4330 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4331 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4334 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4335 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4338 static int manager_ref_uid_internal(
4349 assert(uid_is_valid(uid
));
4351 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4352 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4354 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4355 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4357 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4360 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4364 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4366 n
= c
& ~DESTROY_IPC_FLAG
;
4369 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4372 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4374 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4377 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4378 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4381 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4382 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4385 static void manager_vacuum_uid_refs_internal(
4388 int (*_clean_ipc
)(uid_t uid
)) {
4397 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4401 uid
= PTR_TO_UID(k
);
4402 c
= PTR_TO_UINT32(p
);
4404 n
= c
& ~DESTROY_IPC_FLAG
;
4408 if (c
& DESTROY_IPC_FLAG
) {
4409 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4410 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4412 (void) _clean_ipc(uid
);
4415 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4419 void manager_vacuum_uid_refs(Manager
*m
) {
4420 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4423 void manager_vacuum_gid_refs(Manager
*m
) {
4424 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4427 static void manager_serialize_uid_refs_internal(
4431 const char *field_name
) {
4441 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4442 * of it is better rebuild after a reload/reexec. */
4444 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4448 uid
= PTR_TO_UID(k
);
4449 c
= PTR_TO_UINT32(p
);
4451 if (!(c
& DESTROY_IPC_FLAG
))
4454 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4458 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4459 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4462 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4463 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4466 static void manager_deserialize_uid_refs_one_internal(
4469 const char *value
) {
4479 r
= parse_uid(value
, &uid
);
4480 if (r
< 0 || uid
== 0) {
4481 log_debug("Unable to parse UID reference serialization");
4485 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4491 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4492 if (c
& DESTROY_IPC_FLAG
)
4495 c
|= DESTROY_IPC_FLAG
;
4497 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4499 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4504 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4505 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4508 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4509 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4512 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4516 char unit_name
[UNIT_NAME_MAX
+1];
4519 Manager
*m
= userdata
;
4527 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4528 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4529 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4531 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4533 if (IN_SET(errno
, EINTR
, EAGAIN
))
4536 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4539 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4540 log_warning("Received too short user lookup message, ignoring.");
4544 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4545 log_warning("Received too long user lookup message, ignoring.");
4549 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4550 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4554 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4555 if (memchr(buffer
.unit_name
, 0, n
)) {
4556 log_warning("Received lookup message with embedded NUL character, ignoring.");
4560 buffer
.unit_name
[n
] = 0;
4561 u
= manager_get_unit(m
, buffer
.unit_name
);
4563 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4567 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4569 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4573 char *manager_taint_string(Manager
*m
) {
4574 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4578 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4579 * Only things that are detected at runtime should be tagged
4580 * here. For stuff that is set during compilation, emit a warning
4581 * in the configuration phase. */
4585 buf
= new(char, sizeof("split-usr:"
4589 "overflowuid-not-65534:"
4590 "overflowgid-not-65534:"));
4598 e
= stpcpy(e
, "split-usr:");
4600 if (access("/proc/cgroups", F_OK
) < 0)
4601 e
= stpcpy(e
, "cgroups-missing:");
4603 if (clock_is_localtime(NULL
) > 0)
4604 e
= stpcpy(e
, "local-hwclock:");
4606 r
= readlink_malloc("/var/run", &destination
);
4607 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4608 e
= stpcpy(e
, "var-run-bad:");
4610 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4611 if (r
>= 0 && !streq(overflowuid
, "65534"))
4612 e
= stpcpy(e
, "overflowuid-not-65534:");
4614 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4615 if (r
>= 0 && !streq(overflowgid
, "65534"))
4616 e
= stpcpy(e
, "overflowgid-not-65534:");
4618 /* remove the last ':' */
4625 void manager_ref_console(Manager
*m
) {
4631 void manager_unref_console(Manager
*m
) {
4633 assert(m
->n_on_console
> 0);
4636 if (m
->n_on_console
== 0)
4637 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4640 void manager_override_log_level(Manager
*m
, int level
) {
4641 _cleanup_free_
char *s
= NULL
;
4644 if (!m
->log_level_overridden
) {
4645 m
->original_log_level
= log_get_max_level();
4646 m
->log_level_overridden
= true;
4649 (void) log_level_to_string_alloc(level
, &s
);
4650 log_info("Setting log level to %s.", strna(s
));
4652 log_set_max_level(level
);
4655 void manager_restore_original_log_level(Manager
*m
) {
4656 _cleanup_free_
char *s
= NULL
;
4659 if (!m
->log_level_overridden
)
4662 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4663 log_info("Restoring log level to original (%s).", strna(s
));
4665 log_set_max_level(m
->original_log_level
);
4666 m
->log_level_overridden
= false;
4669 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4672 if (!m
->log_target_overridden
) {
4673 m
->original_log_target
= log_get_target();
4674 m
->log_target_overridden
= true;
4677 log_info("Setting log target to %s.", log_target_to_string(target
));
4678 log_set_target(target
);
4681 void manager_restore_original_log_target(Manager
*m
) {
4684 if (!m
->log_target_overridden
)
4687 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4689 log_set_target(m
->original_log_target
);
4690 m
->log_target_overridden
= false;
4693 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4695 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4696 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4697 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4701 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4702 [MANAGER_INITIALIZING
] = "initializing",
4703 [MANAGER_STARTING
] = "starting",
4704 [MANAGER_RUNNING
] = "running",
4705 [MANAGER_DEGRADED
] = "degraded",
4706 [MANAGER_MAINTENANCE
] = "maintenance",
4707 [MANAGER_STOPPING
] = "stopping",
4710 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4712 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4713 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4714 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4715 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4716 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4717 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4718 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4719 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4720 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4721 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4722 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4723 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4724 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4725 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4726 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4727 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4728 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4729 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4730 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4733 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4735 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4736 [OOM_CONTINUE
] = "continue",
4737 [OOM_STOP
] = "stop",
4738 [OOM_KILL
] = "kill",
4741 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);