1 /* SPDX-License-Identifier: LGPL-2.1+ */
7 #include <sys/inotify.h>
9 #include <sys/reboot.h>
10 #include <sys/timerfd.h>
18 #include "sd-daemon.h"
19 #include "sd-messages.h"
22 #include "all-units.h"
23 #include "alloc-util.h"
25 #include "boot-timestamps.h"
26 #include "bus-common-errors.h"
27 #include "bus-error.h"
28 #include "bus-kernel.h"
30 #include "clean-ipc.h"
31 #include "clock-util.h"
32 #include "core-varlink.h"
34 #include "dbus-manager.h"
35 #include "dbus-unit.h"
38 #include "dirent-util.h"
41 #include "exec-util.h"
43 #include "exit-status.h"
47 #include "generator-setup.h"
52 #include "locale-setup.h"
56 #include "memory-util.h"
58 #include "parse-util.h"
59 #include "path-lookup.h"
60 #include "path-util.h"
61 #include "process-util.h"
62 #include "ratelimit.h"
63 #include "rlimit-util.h"
65 #include "serialize.h"
66 #include "signal-util.h"
67 #include "socket-util.h"
69 #include "stat-util.h"
70 #include "string-table.h"
71 #include "string-util.h"
74 #include "sysctl-util.h"
75 #include "syslog-util.h"
76 #include "terminal-util.h"
77 #include "time-util.h"
78 #include "transaction.h"
79 #include "umask-util.h"
80 #include "unit-name.h"
81 #include "user-util.h"
85 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
86 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
88 /* Initial delay and the interval for printing status messages about running jobs */
89 #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC)
90 #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC)
91 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
92 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
94 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
95 * the queue gets more empty. */
96 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
98 /* How many units and jobs to process of the bus queue before returning to the event loop. */
99 #define MANAGER_BUS_MESSAGE_BUDGET 100U
101 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
106 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
107 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
108 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
109 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
110 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
111 static int manager_run_environment_generators(Manager
*m
);
112 static int manager_run_generators(Manager
*m
);
114 static usec_t
manager_watch_jobs_next_time(Manager
*m
) {
115 return usec_add(now(CLOCK_MONOTONIC
),
116 show_status_on(m
->show_status
) ? JOBS_IN_PROGRESS_WAIT_USEC
:
117 JOBS_IN_PROGRESS_QUIET_WAIT_USEC
);
120 static void manager_watch_jobs_in_progress(Manager
*m
) {
126 /* We do not want to show the cylon animation if the user
127 * needs to confirm service executions otherwise confirmation
128 * messages will be screwed by the cylon animation. */
129 if (!manager_is_confirm_spawn_disabled(m
))
132 if (m
->jobs_in_progress_event_source
)
135 next
= manager_watch_jobs_next_time(m
);
136 r
= sd_event_add_time(
138 &m
->jobs_in_progress_event_source
,
141 manager_dispatch_jobs_in_progress
, m
);
145 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
148 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
150 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
153 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
154 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
158 p
= mempset(p
, ' ', pos
-2);
159 if (log_get_show_color())
160 p
= stpcpy(p
, ANSI_RED
);
164 if (pos
> 0 && pos
<= width
) {
165 if (log_get_show_color())
166 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
170 if (log_get_show_color())
171 p
= stpcpy(p
, ANSI_NORMAL
);
174 if (log_get_show_color())
175 p
= stpcpy(p
, ANSI_RED
);
178 p
= mempset(p
, ' ', width
-1-pos
);
179 if (log_get_show_color())
180 strcpy(p
, ANSI_NORMAL
);
184 void manager_flip_auto_status(Manager
*m
, bool enable
, const char *reason
) {
188 if (m
->show_status
== SHOW_STATUS_AUTO
)
189 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
, reason
);
191 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
192 manager_set_show_status(m
, SHOW_STATUS_AUTO
, reason
);
196 static void manager_print_jobs_in_progress(Manager
*m
) {
197 _cleanup_free_
char *job_of_n
= NULL
;
200 unsigned counter
= 0, print_nr
;
201 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
203 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
207 assert(m
->n_running_jobs
> 0);
209 manager_flip_auto_status(m
, true, "delay");
211 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
213 HASHMAP_FOREACH(j
, m
->jobs
, i
)
214 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
217 /* m->n_running_jobs must be consistent with the contents of m->jobs,
218 * so the above loop must have succeeded in finding j. */
219 assert(counter
== print_nr
+ 1);
222 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
224 cylon_pos
= 14 - cylon_pos
;
225 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
227 m
->jobs_in_progress_iteration
++;
229 if (m
->n_running_jobs
> 1) {
230 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
234 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
235 if (job_get_timeout(j
, &x
) > 0)
236 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
238 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
239 "%sA %s job is running for %s (%s / %s)",
241 job_type_to_string(j
->type
),
242 unit_status_string(j
->unit
),
246 static int have_ask_password(void) {
247 _cleanup_closedir_
DIR *dir
;
250 dir
= opendir("/run/systemd/ask-password");
258 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
259 if (startswith(de
->d_name
, "ask."))
265 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
266 int fd
, uint32_t revents
, void *userdata
) {
267 Manager
*m
= userdata
;
273 m
->have_ask_password
= have_ask_password();
274 if (m
->have_ask_password
< 0)
275 /* Log error but continue. Negative have_ask_password
276 * is treated as unknown status. */
277 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
282 static void manager_close_ask_password(Manager
*m
) {
285 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
286 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
287 m
->have_ask_password
= -EINVAL
;
290 static int manager_check_ask_password(Manager
*m
) {
295 if (!m
->ask_password_event_source
) {
296 assert(m
->ask_password_inotify_fd
< 0);
298 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
300 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
301 if (m
->ask_password_inotify_fd
< 0)
302 return log_error_errno(errno
, "Failed to create inotify object: %m");
304 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
305 "/run/systemd/ask-password",
306 IN_CREATE
|IN_DELETE
|IN_MOVE
);
308 manager_close_ask_password(m
);
312 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
313 m
->ask_password_inotify_fd
, EPOLLIN
,
314 manager_dispatch_ask_password_fd
, m
);
316 log_error_errno(r
, "Failed to add event source for /run/systemd/ask-password: %m");
317 manager_close_ask_password(m
);
321 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
323 /* Queries might have been added meanwhile... */
324 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
325 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
328 return m
->have_ask_password
;
331 static int manager_watch_idle_pipe(Manager
*m
) {
336 if (m
->idle_pipe_event_source
)
339 if (m
->idle_pipe
[2] < 0)
342 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
344 return log_error_errno(r
, "Failed to watch idle pipe: %m");
346 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
351 static void manager_close_idle_pipe(Manager
*m
) {
354 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
356 safe_close_pair(m
->idle_pipe
);
357 safe_close_pair(m
->idle_pipe
+ 2);
360 static int manager_setup_time_change(Manager
*m
) {
365 if (MANAGER_IS_TEST_RUN(m
))
368 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
369 m
->time_change_fd
= safe_close(m
->time_change_fd
);
371 m
->time_change_fd
= time_change_fd();
372 if (m
->time_change_fd
< 0)
373 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
375 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
377 return log_error_errno(r
, "Failed to create time change event source: %m");
379 /* Schedule this slightly earlier than the .timer event sources */
380 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
382 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
384 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
386 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
391 static int manager_read_timezone_stat(Manager
*m
) {
397 /* Read the current stat() data of /etc/localtime so that we detect changes */
398 if (lstat("/etc/localtime", &st
) < 0) {
399 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
400 changed
= m
->etc_localtime_accessible
;
401 m
->etc_localtime_accessible
= false;
405 k
= timespec_load(&st
.st_mtim
);
406 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
408 m
->etc_localtime_mtime
= k
;
409 m
->etc_localtime_accessible
= true;
415 static int manager_setup_timezone_change(Manager
*m
) {
416 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
421 if (MANAGER_IS_TEST_RUN(m
))
424 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
425 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
426 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
427 * went to zero and all fds to it are closed.
429 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
432 * Note that we create the new event source first here, before releasing the old one. This should optimize
433 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
435 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
436 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
438 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
439 * O_CREATE or by rename() */
441 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
442 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
443 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
446 return log_error_errno(r
, "Failed to create timezone change event source: %m");
448 /* Schedule this slightly earlier than the .timer event sources */
449 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
451 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
453 sd_event_source_unref(m
->timezone_change_event_source
);
454 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
459 static int enable_special_signals(Manager
*m
) {
460 _cleanup_close_
int fd
= -1;
464 if (MANAGER_IS_TEST_RUN(m
))
467 /* Enable that we get SIGINT on control-alt-del. In containers
468 * this will fail with EPERM (older) or EINVAL (newer), so
470 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
471 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
473 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
475 /* Support systems without virtual console */
477 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
479 /* Enable that we get SIGWINCH on kbrequest */
480 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
481 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
487 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
489 static int manager_setup_signals(Manager
*m
) {
490 struct sigaction sa
= {
491 .sa_handler
= SIG_DFL
,
492 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
499 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
501 /* We make liberal use of realtime signals here. On
502 * Linux/glibc we have 30 of them (with the exception of Linux
503 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
506 assert_se(sigemptyset(&mask
) == 0);
507 sigset_add_many(&mask
,
508 SIGCHLD
, /* Child died */
509 SIGTERM
, /* Reexecute daemon */
510 SIGHUP
, /* Reload configuration */
511 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
512 SIGUSR2
, /* systemd: dump status */
513 SIGINT
, /* Kernel sends us this on control-alt-del */
514 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
515 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
517 SIGRTMIN
+0, /* systemd: start default.target */
518 SIGRTMIN
+1, /* systemd: isolate rescue.target */
519 SIGRTMIN
+2, /* systemd: isolate emergency.target */
520 SIGRTMIN
+3, /* systemd: start halt.target */
521 SIGRTMIN
+4, /* systemd: start poweroff.target */
522 SIGRTMIN
+5, /* systemd: start reboot.target */
523 SIGRTMIN
+6, /* systemd: start kexec.target */
525 /* ... space for more special targets ... */
527 SIGRTMIN
+13, /* systemd: Immediate halt */
528 SIGRTMIN
+14, /* systemd: Immediate poweroff */
529 SIGRTMIN
+15, /* systemd: Immediate reboot */
530 SIGRTMIN
+16, /* systemd: Immediate kexec */
532 /* ... space for more immediate system state changes ... */
534 SIGRTMIN
+20, /* systemd: enable status messages */
535 SIGRTMIN
+21, /* systemd: disable status messages */
536 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
537 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
538 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
540 /* .. one free signal here ... */
542 /* Apparently Linux on hppa had fewer RT signals until v3.18,
543 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
544 * see commit v3.17-7614-g1f25df2eff.
546 * We cannot unconditionally make use of those signals here,
547 * so let's use a runtime check. Since these commands are
548 * accessible by different means and only really a safety
549 * net, the missing functionality on hppa shouldn't matter.
552 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
553 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
554 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
555 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
557 /* ... one free signal here SIGRTMIN+30 ... */
559 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
561 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
562 if (m
->signal_fd
< 0)
565 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
569 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
571 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
572 * notify processing can still figure out to which process/service a message belongs, before we reap the
573 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
574 * status information before detecting that there's no process in a cgroup. */
575 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
579 if (MANAGER_IS_SYSTEM(m
))
580 return enable_special_signals(m
);
585 static char** sanitize_environment(char **l
) {
587 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
608 /* Let's order the environment alphabetically, just to make it pretty */
614 int manager_default_environment(Manager
*m
) {
619 m
->transient_environment
= strv_free(m
->transient_environment
);
621 if (MANAGER_IS_SYSTEM(m
)) {
622 /* The system manager always starts with a clean
623 * environment for its children. It does not import
624 * the kernel's or the parents' exported variables.
626 * The initial passed environment is untouched to keep
627 * /proc/self/environ valid; it is used for tagging
628 * the init process inside containers. */
629 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
630 if (!m
->transient_environment
)
633 /* Import locale variables LC_*= from configuration */
634 (void) locale_setup(&m
->transient_environment
);
636 _cleanup_free_
char *k
= NULL
;
638 /* The user manager passes its own environment
639 * along to its children, except for $PATH. */
640 m
->transient_environment
= strv_copy(environ
);
641 if (!m
->transient_environment
)
644 k
= strdup("PATH=" DEFAULT_USER_PATH
);
648 r
= strv_env_replace(&m
->transient_environment
, k
);
654 sanitize_environment(m
->transient_environment
);
659 static int manager_setup_prefix(Manager
*m
) {
665 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
666 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
667 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
668 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
669 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
670 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
673 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
674 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
675 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
676 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
677 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
678 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
681 const struct table_entry
*p
;
687 if (MANAGER_IS_SYSTEM(m
))
692 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
693 r
= sd_path_lookup(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
701 static void manager_free_unit_name_maps(Manager
*m
) {
702 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
703 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
704 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
705 m
->unit_cache_mtime
= 0;
708 static int manager_setup_run_queue(Manager
*m
) {
712 assert(!m
->run_queue_event_source
);
714 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
718 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
722 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
726 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
731 static int manager_setup_sigchld_event_source(Manager
*m
) {
735 assert(!m
->sigchld_event_source
);
737 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
741 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
745 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
749 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
754 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
755 _cleanup_(manager_freep
) Manager
*m
= NULL
;
759 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
766 .unit_file_scope
= scope
,
767 .objective
= _MANAGER_OBJECTIVE_INVALID
,
769 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
771 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
772 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
773 .default_tasks_accounting
= true,
774 .default_tasks_max
= TASKS_MAX_UNSET
,
775 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
776 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
777 .default_restart_usec
= DEFAULT_RESTART_USEC
,
779 .original_log_level
= -1,
780 .original_log_target
= _LOG_TARGET_INVALID
,
783 .cgroups_agent_fd
= -1,
785 .time_change_fd
= -1,
786 .user_lookup_fds
= { -1, -1 },
787 .private_listen_fd
= -1,
789 .cgroup_inotify_fd
= -1,
790 .pin_cgroupfs_fd
= -1,
791 .ask_password_inotify_fd
= -1,
792 .idle_pipe
= { -1, -1, -1, -1},
794 /* start as id #1, so that we can leave #0 around as "null-like" value */
797 .have_ask_password
= -EINVAL
, /* we don't know */
799 .test_run_flags
= test_run_flags
,
801 .default_oom_policy
= OOM_STOP
,
805 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
806 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
807 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
808 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
811 /* Prepare log fields we can use for structured logging */
812 if (MANAGER_IS_SYSTEM(m
)) {
813 m
->unit_log_field
= "UNIT=";
814 m
->unit_log_format_string
= "UNIT=%s";
816 m
->invocation_log_field
= "INVOCATION_ID=";
817 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
819 m
->unit_log_field
= "USER_UNIT=";
820 m
->unit_log_format_string
= "USER_UNIT=%s";
822 m
->invocation_log_field
= "USER_INVOCATION_ID=";
823 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
826 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
827 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
829 r
= manager_default_environment(m
);
833 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
837 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
841 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
845 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
849 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
853 r
= manager_setup_prefix(m
);
857 r
= sd_event_default(&m
->event
);
861 r
= manager_setup_run_queue(m
);
865 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
866 m
->cgroup_root
= strdup("");
870 r
= manager_setup_signals(m
);
874 r
= manager_setup_cgroup(m
);
878 r
= manager_setup_time_change(m
);
882 r
= manager_read_timezone_stat(m
);
886 (void) manager_setup_timezone_change(m
);
888 r
= manager_setup_sigchld_event_source(m
);
893 if (test_run_flags
== 0) {
894 if (MANAGER_IS_SYSTEM(m
))
895 r
= mkdir_label("/run/systemd/units", 0755);
897 _cleanup_free_
char *units_path
= NULL
;
898 r
= xdg_user_runtime_dir(&units_path
, "/systemd/units");
901 r
= mkdir_p_label(units_path
, 0755);
904 if (r
< 0 && r
!= -EEXIST
)
910 dir_is_empty("/usr") > 0;
912 /* Note that we do not set up the notify fd here. We do that after deserialization,
913 * since they might have gotten serialized across the reexec. */
920 static int manager_setup_notify(Manager
*m
) {
923 if (MANAGER_IS_TEST_RUN(m
))
926 if (m
->notify_fd
< 0) {
927 _cleanup_close_
int fd
= -1;
928 union sockaddr_union sa
;
931 /* First free all secondary fields */
932 m
->notify_socket
= mfree(m
->notify_socket
);
933 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
935 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
937 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
939 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
941 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
942 if (!m
->notify_socket
)
945 r
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
947 return log_error_errno(r
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.",
951 (void) mkdir_parents_label(m
->notify_socket
, 0755);
952 (void) sockaddr_un_unlink(&sa
.un
);
954 r
= bind(fd
, &sa
.sa
, sa_len
);
956 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
958 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
960 return log_error_errno(r
, "SO_PASSCRED failed: %m");
962 m
->notify_fd
= TAKE_FD(fd
);
964 log_debug("Using notification socket %s", m
->notify_socket
);
967 if (!m
->notify_event_source
) {
968 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
970 return log_error_errno(r
, "Failed to allocate notify event source: %m");
972 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
973 * service an exit message belongs. */
974 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
976 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
978 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
984 static int manager_setup_cgroups_agent(Manager
*m
) {
986 static const union sockaddr_union sa
= {
987 .un
.sun_family
= AF_UNIX
,
988 .un
.sun_path
= "/run/systemd/cgroups-agent",
992 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
993 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
994 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
995 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
996 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
997 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
998 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
999 * we thus won't lose messages.
1001 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
1002 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
1003 * bus for these messages. */
1005 if (MANAGER_IS_TEST_RUN(m
))
1008 if (!MANAGER_IS_SYSTEM(m
))
1011 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
1013 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
1014 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
1017 if (m
->cgroups_agent_fd
< 0) {
1018 _cleanup_close_
int fd
= -1;
1020 /* First free all secondary fields */
1021 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1023 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1025 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1027 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1029 (void) sockaddr_un_unlink(&sa
.un
);
1031 /* Only allow root to connect to this socket */
1032 RUN_WITH_UMASK(0077)
1033 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1035 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1037 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1040 if (!m
->cgroups_agent_event_source
) {
1041 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1043 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1045 /* Process cgroups notifications early. Note that when the agent notification is received
1046 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1047 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1048 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1050 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1052 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1058 static int manager_setup_user_lookup_fd(Manager
*m
) {
1063 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1064 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1065 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1066 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1067 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1068 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1069 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1070 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1073 * You might wonder why we need a communication channel for this that is independent of the usual notification
1074 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1075 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1076 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1078 * Note that this function is called under two circumstances: when we first initialize (in which case we
1079 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1080 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1082 if (m
->user_lookup_fds
[0] < 0) {
1084 /* Free all secondary fields */
1085 safe_close_pair(m
->user_lookup_fds
);
1086 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1088 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1089 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1091 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1094 if (!m
->user_lookup_event_source
) {
1095 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1097 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1099 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1101 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1103 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1105 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1111 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1117 while ((u
= m
->cleanup_queue
)) {
1118 assert(u
->in_cleanup_queue
);
1128 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1129 GC_OFFSET_UNSURE
, /* No clue */
1130 GC_OFFSET_GOOD
, /* We still need this unit */
1131 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1135 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1140 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1142 /* Recursively mark referenced units as GOOD as well */
1143 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1144 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1145 unit_gc_mark_good(other
, gc_marker
);
1148 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1156 if (IN_SET(u
->gc_marker
- gc_marker
,
1157 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1160 if (u
->in_cleanup_queue
)
1163 if (!unit_may_gc(u
))
1166 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1170 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1171 unit_gc_sweep(other
, gc_marker
);
1173 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1176 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1180 if (u
->refs_by_target
) {
1183 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1184 unit_gc_sweep(ref
->source
, gc_marker
);
1186 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1189 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1197 /* We were unable to find anything out about this entry, so
1198 * let's investigate it later */
1199 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1200 unit_add_to_gc_queue(u
);
1204 /* We definitely know that this one is not useful anymore, so
1205 * let's mark it for deletion */
1206 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1207 unit_add_to_cleanup_queue(u
);
1211 unit_gc_mark_good(u
, gc_marker
);
1214 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1215 unsigned n
= 0, gc_marker
;
1220 /* log_debug("Running GC..."); */
1222 m
->gc_marker
+= _GC_OFFSET_MAX
;
1223 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1226 gc_marker
= m
->gc_marker
;
1228 while ((u
= m
->gc_unit_queue
)) {
1229 assert(u
->in_gc_queue
);
1231 unit_gc_sweep(u
, gc_marker
);
1233 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1234 u
->in_gc_queue
= false;
1238 if (IN_SET(u
->gc_marker
- gc_marker
,
1239 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1241 log_unit_debug(u
, "Collecting.");
1242 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1243 unit_add_to_cleanup_queue(u
);
1250 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1256 while ((j
= m
->gc_job_queue
)) {
1257 assert(j
->in_gc_queue
);
1259 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1260 j
->in_gc_queue
= false;
1267 log_unit_debug(j
->unit
, "Collecting job.");
1268 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1274 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1281 while ((u
= m
->stop_when_unneeded_queue
)) {
1282 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1283 assert(m
->stop_when_unneeded_queue
);
1285 assert(u
->in_stop_when_unneeded_queue
);
1286 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1287 u
->in_stop_when_unneeded_queue
= false;
1291 if (!unit_is_unneeded(u
))
1294 log_unit_debug(u
, "Unit is not needed anymore.");
1296 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1297 * service being unnecessary after a while. */
1299 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1300 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1304 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1305 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1307 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1313 static void manager_clear_jobs_and_units(Manager
*m
) {
1318 while ((u
= hashmap_first(m
->units
)))
1321 manager_dispatch_cleanup_queue(m
);
1323 assert(!m
->load_queue
);
1324 assert(prioq_isempty(m
->run_queue
));
1325 assert(!m
->dbus_unit_queue
);
1326 assert(!m
->dbus_job_queue
);
1327 assert(!m
->cleanup_queue
);
1328 assert(!m
->gc_unit_queue
);
1329 assert(!m
->gc_job_queue
);
1330 assert(!m
->stop_when_unneeded_queue
);
1332 assert(hashmap_isempty(m
->jobs
));
1333 assert(hashmap_isempty(m
->units
));
1335 m
->n_on_console
= 0;
1336 m
->n_running_jobs
= 0;
1337 m
->n_installed_jobs
= 0;
1338 m
->n_failed_jobs
= 0;
1341 Manager
* manager_free(Manager
*m
) {
1342 ExecDirectoryType dt
;
1348 manager_clear_jobs_and_units(m
);
1350 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1351 if (unit_vtable
[c
]->shutdown
)
1352 unit_vtable
[c
]->shutdown(m
);
1354 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1355 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1357 lookup_paths_flush_generator(&m
->lookup_paths
);
1360 manager_varlink_done(m
);
1362 exec_runtime_vacuum(m
);
1363 hashmap_free(m
->exec_runtime_by_id
);
1365 dynamic_user_vacuum(m
, false);
1366 hashmap_free(m
->dynamic_users
);
1368 hashmap_free(m
->units
);
1369 hashmap_free(m
->units_by_invocation_id
);
1370 hashmap_free(m
->jobs
);
1371 hashmap_free(m
->watch_pids
);
1372 hashmap_free(m
->watch_bus
);
1374 prioq_free(m
->run_queue
);
1376 set_free(m
->startup_units
);
1377 set_free(m
->failed_units
);
1379 sd_event_source_unref(m
->signal_event_source
);
1380 sd_event_source_unref(m
->sigchld_event_source
);
1381 sd_event_source_unref(m
->notify_event_source
);
1382 sd_event_source_unref(m
->cgroups_agent_event_source
);
1383 sd_event_source_unref(m
->time_change_event_source
);
1384 sd_event_source_unref(m
->timezone_change_event_source
);
1385 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1386 sd_event_source_unref(m
->run_queue_event_source
);
1387 sd_event_source_unref(m
->user_lookup_event_source
);
1389 safe_close(m
->signal_fd
);
1390 safe_close(m
->notify_fd
);
1391 safe_close(m
->cgroups_agent_fd
);
1392 safe_close(m
->time_change_fd
);
1393 safe_close_pair(m
->user_lookup_fds
);
1395 manager_close_ask_password(m
);
1397 manager_close_idle_pipe(m
);
1399 sd_event_unref(m
->event
);
1401 free(m
->notify_socket
);
1403 lookup_paths_free(&m
->lookup_paths
);
1404 strv_free(m
->transient_environment
);
1405 strv_free(m
->client_environment
);
1407 hashmap_free(m
->cgroup_unit
);
1408 manager_free_unit_name_maps(m
);
1410 free(m
->switch_root
);
1411 free(m
->switch_root_init
);
1413 rlimit_free_all(m
->rlimit
);
1415 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1416 hashmap_free(m
->units_requiring_mounts_for
);
1418 hashmap_free(m
->uid_refs
);
1419 hashmap_free(m
->gid_refs
);
1421 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1422 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1427 static void manager_enumerate_perpetual(Manager
*m
) {
1432 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1435 /* Let's ask every type to load all units from disk/kernel that it might know */
1436 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1437 if (!unit_type_supported(c
)) {
1438 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1442 if (unit_vtable
[c
]->enumerate_perpetual
)
1443 unit_vtable
[c
]->enumerate_perpetual(m
);
1447 static void manager_enumerate(Manager
*m
) {
1452 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1455 /* Let's ask every type to load all units from disk/kernel that it might know */
1456 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1457 if (!unit_type_supported(c
)) {
1458 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1462 if (unit_vtable
[c
]->enumerate
)
1463 unit_vtable
[c
]->enumerate(m
);
1466 manager_dispatch_load_queue(m
);
1469 static void manager_coldplug(Manager
*m
) {
1477 log_debug("Invoking unit coldplug() handlers…");
1479 /* Let's place the units back into their deserialized state */
1480 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1482 /* ignore aliases */
1486 r
= unit_coldplug(u
);
1488 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1492 static void manager_catchup(Manager
*m
) {
1499 log_debug("Invoking unit catchup() handlers…");
1501 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1502 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1504 /* ignore aliases */
1512 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1518 HASHMAP_FOREACH(u
, m
->units
, i
) {
1520 if (fdset_size(fds
) <= 0)
1523 if (!UNIT_VTABLE(u
)->distribute_fds
)
1526 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1530 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1535 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1536 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1537 * rather than the current one. */
1539 if (MANAGER_IS_TEST_RUN(m
))
1542 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1545 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1548 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1551 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1557 static void manager_setup_bus(Manager
*m
) {
1560 /* Let's set up our private bus connection now, unconditionally */
1561 (void) bus_init_private(m
);
1563 /* If we are in --user mode also connect to the system bus now */
1564 if (MANAGER_IS_USER(m
))
1565 (void) bus_init_system(m
);
1567 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1568 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1569 (void) bus_init_api(m
);
1571 if (MANAGER_IS_SYSTEM(m
))
1572 (void) bus_init_system(m
);
1576 static void manager_preset_all(Manager
*m
) {
1581 if (m
->first_boot
<= 0)
1584 if (!MANAGER_IS_SYSTEM(m
))
1587 if (MANAGER_IS_TEST_RUN(m
))
1590 /* If this is the first boot, and we are in the host system, then preset everything */
1591 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1593 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1594 "Failed to populate /etc with preset unit settings, ignoring: %m");
1596 log_info("Populated /etc with preset unit settings.");
1599 static void manager_vacuum(Manager
*m
) {
1602 /* Release any dynamic users no longer referenced */
1603 dynamic_user_vacuum(m
, true);
1605 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1606 manager_vacuum_uid_refs(m
);
1607 manager_vacuum_gid_refs(m
);
1609 /* Release any runtimes no longer referenced */
1610 exec_runtime_vacuum(m
);
1613 static void manager_ready(Manager
*m
) {
1616 /* After having loaded everything, do the final round of catching up with what might have changed */
1618 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1620 /* It might be safe to log to the journal now and connect to dbus */
1621 manager_recheck_journal(m
);
1622 manager_recheck_dbus(m
);
1624 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1627 m
->honor_device_enumeration
= true;
1630 static Manager
* manager_reloading_start(Manager
*m
) {
1634 static void manager_reloading_stopp(Manager
**m
) {
1636 assert((*m
)->n_reloading
> 0);
1637 (*m
)->n_reloading
--;
1641 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1646 /* If we are running in test mode, we still want to run the generators,
1647 * but we should not touch the real generator directories. */
1648 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1649 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1652 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1654 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1655 r
= manager_run_environment_generators(m
);
1657 r
= manager_run_generators(m
);
1658 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1662 manager_preset_all(m
);
1664 lookup_paths_log(&m
->lookup_paths
);
1667 /* This block is (optionally) done with the reloading counter bumped */
1668 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1670 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1671 * counter here already */
1673 reloading
= manager_reloading_start(m
);
1675 /* First, enumerate what we can from all config files */
1676 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1677 manager_enumerate_perpetual(m
);
1678 manager_enumerate(m
);
1679 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1681 /* Second, deserialize if there is something to deserialize */
1682 if (serialization
) {
1683 r
= manager_deserialize(m
, serialization
, fds
);
1685 return log_error_errno(r
, "Deserialization failed: %m");
1688 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1689 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1691 manager_distribute_fds(m
, fds
);
1693 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1694 r
= manager_setup_notify(m
);
1696 /* No sense to continue without notifications, our children would fail anyway. */
1699 r
= manager_setup_cgroups_agent(m
);
1701 /* Likewise, no sense to continue without empty cgroup notifications. */
1704 r
= manager_setup_user_lookup_fd(m
);
1706 /* This shouldn't fail, except if things are really broken. */
1709 /* Connect to the bus if we are good for it */
1710 manager_setup_bus(m
);
1712 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1713 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1715 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1716 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1718 r
= manager_varlink_init(m
);
1720 log_warning_errno(r
, "Failed to set up Varlink server, ignoring: %m");
1722 /* Third, fire things up! */
1723 manager_coldplug(m
);
1725 /* Clean up runtime objects */
1729 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1730 * reload is finished */
1731 m
->send_reloading_done
= true;
1739 int manager_add_job(
1745 sd_bus_error
*error
,
1752 assert(type
< _JOB_TYPE_MAX
);
1754 assert(mode
< _JOB_MODE_MAX
);
1756 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1757 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1759 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1760 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1762 if (mode
== JOB_TRIGGERING
&& type
!= JOB_STOP
)
1763 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "--job-mode=triggering is only valid for stop.");
1765 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1767 type
= job_type_collapse(type
, unit
);
1769 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1773 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1774 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1775 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1779 if (mode
== JOB_ISOLATE
) {
1780 r
= transaction_add_isolate_jobs(tr
, m
);
1785 if (mode
== JOB_TRIGGERING
) {
1786 r
= transaction_add_triggering_jobs(tr
, unit
);
1791 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1795 log_unit_debug(unit
,
1796 "Enqueued job %s/%s as %u", unit
->id
,
1797 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1800 *ret
= tr
->anchor_job
;
1802 transaction_free(tr
);
1806 transaction_abort(tr
);
1807 transaction_free(tr
);
1811 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1812 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1816 assert(type
< _JOB_TYPE_MAX
);
1818 assert(mode
< _JOB_MODE_MAX
);
1820 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1825 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1828 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1829 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1833 assert(type
< _JOB_TYPE_MAX
);
1835 assert(mode
< _JOB_MODE_MAX
);
1837 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1839 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1844 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1850 assert(mode
< _JOB_MODE_MAX
);
1851 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1853 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1857 /* We need an anchor job */
1858 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1862 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1863 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1865 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1869 transaction_free(tr
);
1873 transaction_abort(tr
);
1874 transaction_free(tr
);
1878 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1881 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1884 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1888 return hashmap_get(m
->units
, name
);
1891 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1896 static const UnitDependency deps
[] = {
1905 while ((u
= m
->target_deps_queue
)) {
1906 assert(u
->in_target_deps_queue
);
1908 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1909 u
->in_target_deps_queue
= false;
1911 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1916 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1917 r
= unit_add_default_target_dependency(u
, target
);
1927 unsigned manager_dispatch_load_queue(Manager
*m
) {
1933 /* Make sure we are not run recursively */
1934 if (m
->dispatching_load_queue
)
1937 m
->dispatching_load_queue
= true;
1939 /* Dispatches the load queue. Takes a unit from the queue and
1940 * tries to load its data until the queue is empty */
1942 while ((u
= m
->load_queue
)) {
1943 assert(u
->in_load_queue
);
1949 m
->dispatching_load_queue
= false;
1951 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1952 * should be loaded and have aliases resolved */
1953 (void) manager_dispatch_target_deps_queue(m
);
1958 int manager_load_unit_prepare(
1965 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1973 /* This will prepare the unit for loading, but not actually
1974 * load anything from disk. */
1976 if (path
&& !is_path(path
))
1977 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1980 /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to
1981 * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(),
1982 * but this cannot be possible in any code path (See #6119). */
1984 name
= basename(path
);
1987 t
= unit_name_to_type(name
);
1989 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1990 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1991 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1993 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1996 ret
= manager_get_unit(m
, name
);
2002 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
2007 ret
->fragment_path
= strdup(path
);
2008 if (!ret
->fragment_path
)
2012 r
= unit_add_name(ret
, name
);
2016 unit_add_to_load_queue(ret
);
2017 unit_add_to_dbus_queue(ret
);
2018 unit_add_to_gc_queue(ret
);
2026 int manager_load_unit(
2038 /* This will load the service information files, but not actually
2039 * start any services or anything. */
2041 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2045 manager_dispatch_load_queue(m
);
2047 *_ret
= unit_follow_merge(*_ret
);
2051 int manager_load_startable_unit_or_warn(
2057 /* Load a unit, make sure it loaded fully and is not masked. */
2059 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2063 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2065 return log_error_errno(r
, "Failed to load %s %s: %s",
2066 name
? "unit" : "unit file", name
?: path
,
2067 bus_error_message(&error
, r
));
2069 r
= bus_unit_validate_load_state(unit
, &error
);
2071 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2077 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2084 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2085 job_dump(j
, f
, prefix
);
2088 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2096 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2098 unit_dump(u
, f
, prefix
);
2101 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2107 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2108 const dual_timestamp
*t
= m
->timestamps
+ q
;
2109 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2111 if (dual_timestamp_is_set(t
))
2112 fprintf(f
, "%sTimestamp %s: %s\n",
2114 manager_timestamp_to_string(q
),
2115 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2116 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2119 manager_dump_units(m
, f
, prefix
);
2120 manager_dump_jobs(m
, f
, prefix
);
2123 int manager_get_dump_string(Manager
*m
, char **ret
) {
2124 _cleanup_free_
char *dump
= NULL
;
2125 _cleanup_fclose_
FILE *f
= NULL
;
2132 f
= open_memstream_unlocked(&dump
, &size
);
2136 manager_dump(m
, f
, NULL
);
2138 r
= fflush_and_check(f
);
2144 *ret
= TAKE_PTR(dump
);
2149 void manager_clear_jobs(Manager
*m
) {
2154 while ((j
= hashmap_first(m
->jobs
)))
2155 /* No need to recurse. We're cancelling all jobs. */
2156 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2159 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2162 /* First let's drop the unit keyed as "pid". */
2163 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2165 /* Then, let's also drop the array keyed by -pid. */
2166 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2169 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2170 Manager
*m
= userdata
;
2176 while ((j
= prioq_peek(m
->run_queue
))) {
2177 assert(j
->installed
);
2178 assert(j
->in_run_queue
);
2180 (void) job_run_and_invalidate(j
);
2183 if (m
->n_running_jobs
> 0)
2184 manager_watch_jobs_in_progress(m
);
2186 if (m
->n_on_console
> 0)
2187 manager_watch_idle_pipe(m
);
2192 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2193 unsigned n
= 0, budget
;
2199 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2200 * as we can. There's no point in throttling generation of signals in that case. */
2201 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2202 budget
= (unsigned) -1; /* infinite budget in this case */
2204 /* Anything to do at all? */
2205 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2208 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2209 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2210 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2213 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2214 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2215 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2216 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2217 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2218 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2219 * connections it will be counted five times. This difference in counting ("references"
2220 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2221 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2222 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2223 * currently chosen much higher than the "budget". */
2224 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2227 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2229 assert(u
->in_dbus_queue
);
2231 bus_unit_send_change_signal(u
);
2234 if (budget
!= (unsigned) -1)
2238 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2239 assert(j
->in_dbus_queue
);
2241 bus_job_send_change_signal(j
);
2244 if (budget
!= (unsigned) -1)
2248 if (m
->send_reloading_done
) {
2249 m
->send_reloading_done
= false;
2250 bus_manager_send_reloading(m
, false);
2254 if (m
->pending_reload_message
) {
2255 bus_send_pending_reload_message(m
);
2262 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2263 Manager
*m
= userdata
;
2267 n
= recv(fd
, buf
, sizeof(buf
), 0);
2269 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2271 log_error("Got zero-length cgroups agent message, ignoring.");
2274 if ((size_t) n
>= sizeof(buf
)) {
2275 log_error("Got overly long cgroups agent message, ignoring.");
2279 if (memchr(buf
, 0, n
)) {
2280 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2285 manager_notify_cgroup_empty(m
, buf
);
2286 (void) bus_forward_agent_released(m
, buf
);
2291 static bool manager_process_barrier_fd(const char *buf
, FDSet
*fds
) {
2294 /* nothing else must be sent when using BARRIER=1 */
2295 if (STR_IN_SET(buf
, "BARRIER=1", "BARRIER=1\n")) {
2296 if (fdset_size(fds
) != 1)
2297 log_warning("Got incorrect number of fds with BARRIER=1, closing them.");
2299 } else if (startswith(buf
, "BARRIER=1\n") || strstr(buf
, "\nBARRIER=1\n") || endswith(buf
, "\nBARRIER=1"))
2300 log_warning("Extra notification messages sent with BARRIER=1, ignoring everything.");
2305 static void manager_invoke_notify_message(
2308 const struct ucred
*ucred
,
2317 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2319 u
->notifygen
= m
->notifygen
;
2321 if (UNIT_VTABLE(u
)->notify_message
) {
2322 _cleanup_strv_free_
char **tags
= NULL
;
2324 tags
= strv_split(buf
, NEWLINE
);
2330 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2332 } else if (DEBUG_LOGGING
) {
2333 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2335 x
= ellipsize(buf
, 20, 90);
2339 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2343 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2345 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2346 Manager
*m
= userdata
;
2347 char buf
[NOTIFY_BUFFER_MAX
+1];
2348 struct iovec iovec
= {
2350 .iov_len
= sizeof(buf
)-1,
2353 struct cmsghdr cmsghdr
;
2354 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2355 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2357 struct msghdr msghdr
= {
2360 .msg_control
= &control
,
2361 .msg_controllen
= sizeof(control
),
2364 struct cmsghdr
*cmsg
;
2365 struct ucred
*ucred
= NULL
;
2366 _cleanup_free_ Unit
**array_copy
= NULL
;
2367 Unit
*u1
, *u2
, **array
;
2368 int r
, *fd_array
= NULL
;
2374 assert(m
->notify_fd
== fd
);
2376 if (revents
!= EPOLLIN
) {
2377 log_warning("Got unexpected poll event for notify fd.");
2381 n
= recvmsg_safe(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2382 if (IN_SET(n
, -EAGAIN
, -EINTR
))
2383 return 0; /* Spurious wakeup, try again */
2385 /* If this is any other, real error, then let's stop processing this socket. This of course
2386 * means we won't take notification messages anymore, but that's still better than busy
2387 * looping around this: being woken up over and over again but being unable to actually read
2388 * the message off the socket. */
2389 return log_error_errno(n
, "Failed to receive notification message: %m");
2391 CMSG_FOREACH(cmsg
, &msghdr
) {
2392 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2395 fd_array
= (int*) CMSG_DATA(cmsg
);
2396 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2398 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2399 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2400 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2403 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2410 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2412 close_many(fd_array
, n_fds
);
2418 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2419 log_warning("Received notify message without valid credentials. Ignoring.");
2423 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2424 log_warning("Received notify message exceeded maximum size. Ignoring.");
2428 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2429 * trailing NUL byte in the message, but don't expect it. */
2430 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2431 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2435 /* Make sure it's NUL-terminated. */
2438 /* possibly a barrier fd, let's see */
2439 if (manager_process_barrier_fd(buf
, fds
))
2442 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2445 /* Notify every unit that might be interested, which might be multiple. */
2446 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2447 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2448 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2455 array_copy
= newdup(Unit
*, array
, k
+1);
2459 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2460 * make sure we only invoke each unit's handler once. */
2462 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2466 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2470 for (size_t i
= 0; array_copy
[i
]; i
++) {
2471 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2476 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2478 if (fdset_size(fds
) > 0)
2479 log_warning("Got extra auxiliary fds with notification message, closing them.");
2484 static void manager_invoke_sigchld_event(
2487 const siginfo_t
*si
) {
2493 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2494 if (u
->sigchldgen
== m
->sigchldgen
)
2496 u
->sigchldgen
= m
->sigchldgen
;
2498 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2499 unit_unwatch_pid(u
, si
->si_pid
);
2501 if (UNIT_VTABLE(u
)->sigchld_event
)
2502 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2505 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2506 Manager
*m
= userdata
;
2513 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2514 * while it is a zombie. */
2516 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2518 if (errno
!= ECHILD
)
2519 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2527 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2528 _cleanup_free_ Unit
**array_copy
= NULL
;
2529 _cleanup_free_
char *name
= NULL
;
2530 Unit
*u1
, *u2
, **array
;
2532 (void) get_process_comm(si
.si_pid
, &name
);
2534 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2535 si
.si_pid
, strna(name
),
2536 sigchld_code_to_string(si
.si_code
),
2538 strna(si
.si_code
== CLD_EXITED
2539 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2540 : signal_to_string(si
.si_status
)));
2542 /* Increase the generation counter used for filtering out duplicate unit invocations */
2545 /* And now figure out the unit this belongs to, it might be multiple... */
2546 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2547 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2548 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2552 /* Count how many entries the array has */
2556 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2557 array_copy
= newdup(Unit
*, array
, n
+1);
2562 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2563 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2564 * each iteration. */
2566 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2567 * We only do this for the cgroup the PID belonged to. */
2568 (void) unit_check_oom(u1
);
2570 manager_invoke_sigchld_event(m
, u1
, &si
);
2573 manager_invoke_sigchld_event(m
, u2
, &si
);
2575 for (size_t i
= 0; array_copy
[i
]; i
++)
2576 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2579 /* And now, we actually reap the zombie. */
2580 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2581 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2588 /* All children processed for now, turn off event source */
2590 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2592 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2597 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2598 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2601 log_debug("Activating special unit %s", name
);
2603 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2605 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2608 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2609 /* If the user presses C-A-D more than
2610 * 7 times within 2s, we reboot/shutdown immediately,
2611 * unless it was disabled in system.conf */
2613 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2614 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2616 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2617 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2620 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2621 Manager
*m
= userdata
;
2623 struct signalfd_siginfo sfsi
;
2627 assert(m
->signal_fd
== fd
);
2629 if (revents
!= EPOLLIN
) {
2630 log_warning("Got unexpected events from signal file descriptor.");
2634 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2635 if (n
!= sizeof(sfsi
)) {
2637 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2641 if (IN_SET(errno
, EINTR
, EAGAIN
))
2644 /* We return an error here, which will kill this handler,
2645 * to avoid a busy loop on read error. */
2646 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2649 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2650 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2651 ? LOG_DEBUG
: LOG_INFO
,
2654 switch (sfsi
.ssi_signo
) {
2657 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2659 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2664 if (MANAGER_IS_SYSTEM(m
)) {
2665 /* This is for compatibility with the original sysvinit */
2666 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2669 m
->objective
= MANAGER_REEXECUTE
;
2675 if (MANAGER_IS_SYSTEM(m
))
2676 manager_handle_ctrl_alt_del(m
);
2678 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2679 JOB_REPLACE_IRREVERSIBLY
);
2683 /* This is a nop on non-init */
2684 if (MANAGER_IS_SYSTEM(m
))
2685 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2690 /* This is a nop on non-init */
2691 if (MANAGER_IS_SYSTEM(m
))
2692 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2697 if (manager_dbus_is_running(m
, false)) {
2698 log_info("Trying to reconnect to bus...");
2700 (void) bus_init_api(m
);
2702 if (MANAGER_IS_SYSTEM(m
))
2703 (void) bus_init_system(m
);
2705 log_info("Starting D-Bus service...");
2706 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2712 _cleanup_free_
char *dump
= NULL
;
2714 r
= manager_get_dump_string(m
, &dump
);
2716 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2720 log_dump(LOG_INFO
, dump
);
2725 if (verify_run_space_and_log("Refusing to reload") < 0)
2728 m
->objective
= MANAGER_RELOAD
;
2733 /* Starting SIGRTMIN+0 */
2734 static const struct {
2737 } target_table
[] = {
2738 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2739 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2740 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2741 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2742 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2743 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2744 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2747 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2748 static const ManagerObjective objective_table
[] = {
2750 [1] = MANAGER_POWEROFF
,
2751 [2] = MANAGER_REBOOT
,
2752 [3] = MANAGER_KEXEC
,
2755 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2756 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2757 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2758 manager_start_target(m
, target_table
[idx
].target
,
2759 target_table
[idx
].mode
);
2763 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2764 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2765 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2769 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2772 manager_set_show_status(m
, SHOW_STATUS_YES
, "signal");
2776 manager_set_show_status(m
, SHOW_STATUS_NO
, "signal");
2780 manager_override_log_level(m
, LOG_DEBUG
);
2784 manager_restore_original_log_level(m
);
2788 if (MANAGER_IS_USER(m
)) {
2789 m
->objective
= MANAGER_EXIT
;
2793 /* This is a nop on init */
2797 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2798 manager_restore_original_log_target(m
);
2802 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2806 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2810 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2817 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2818 Manager
*m
= userdata
;
2823 assert(m
->time_change_fd
== fd
);
2825 log_struct(LOG_DEBUG
,
2826 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2827 LOG_MESSAGE("Time has been changed"));
2829 /* Restart the watch */
2830 (void) manager_setup_time_change(m
);
2832 HASHMAP_FOREACH(u
, m
->units
, i
)
2833 if (UNIT_VTABLE(u
)->time_change
)
2834 UNIT_VTABLE(u
)->time_change(u
);
2839 static int manager_dispatch_timezone_change(
2840 sd_event_source
*source
,
2841 const struct inotify_event
*e
,
2844 Manager
*m
= userdata
;
2851 log_debug("inotify event for /etc/localtime");
2853 changed
= manager_read_timezone_stat(m
);
2857 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2858 (void) manager_setup_timezone_change(m
);
2860 /* Read the new timezone */
2863 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2865 HASHMAP_FOREACH(u
, m
->units
, i
)
2866 if (UNIT_VTABLE(u
)->timezone_change
)
2867 UNIT_VTABLE(u
)->timezone_change(u
);
2872 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2873 Manager
*m
= userdata
;
2876 assert(m
->idle_pipe
[2] == fd
);
2878 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2879 * now turn off any further console output if there's at least one service that needs console access, so that
2880 * from now on our own output should not spill into that service's output anymore. After all, we support
2881 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2882 * exclusively without our interference. */
2883 m
->no_console_output
= m
->n_on_console
> 0;
2885 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2886 * by closing the pipes towards them, which is what they are waiting for. */
2887 manager_close_idle_pipe(m
);
2892 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2893 Manager
*m
= userdata
;
2900 manager_print_jobs_in_progress(m
);
2902 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2903 r
= sd_event_source_set_time(source
, next
);
2907 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2910 int manager_loop(Manager
*m
) {
2911 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2915 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2917 manager_check_finished(m
);
2919 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2920 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2922 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2924 while (m
->objective
== MANAGER_OK
) {
2927 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2930 if (!ratelimit_below(&rl
)) {
2931 /* Yay, something is going seriously wrong, pause a little */
2932 log_warning("Looping too fast. Throttling execution a little.");
2936 if (manager_dispatch_load_queue(m
) > 0)
2939 if (manager_dispatch_gc_job_queue(m
) > 0)
2942 if (manager_dispatch_gc_unit_queue(m
) > 0)
2945 if (manager_dispatch_cleanup_queue(m
) > 0)
2948 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2951 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2954 if (manager_dispatch_dbus_queue(m
) > 0)
2957 /* Sleep for watchdog runtime wait time */
2958 if (MANAGER_IS_SYSTEM(m
))
2959 wait_usec
= watchdog_runtime_wait();
2961 wait_usec
= USEC_INFINITY
;
2963 r
= sd_event_run(m
->event
, wait_usec
);
2965 return log_error_errno(r
, "Failed to run event loop: %m");
2968 return m
->objective
;
2971 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2972 _cleanup_free_
char *n
= NULL
;
2973 sd_id128_t invocation_id
;
2981 r
= unit_name_from_dbus_path(s
, &n
);
2985 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2986 * as invocation ID. */
2987 r
= sd_id128_from_string(n
, &invocation_id
);
2989 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2995 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2996 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2997 SD_ID128_FORMAT_VAL(invocation_id
));
3000 /* If this didn't work, we check if this is a unit name */
3001 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
3002 _cleanup_free_
char *nn
= NULL
;
3005 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
3006 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
3009 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
3017 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
3027 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
3031 r
= safe_atou(p
, &id
);
3035 j
= manager_get_job(m
, id
);
3044 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
3047 _cleanup_free_
char *p
= NULL
;
3051 if (!MANAGER_IS_SYSTEM(m
))
3054 audit_fd
= get_audit_fd();
3058 /* Don't generate audit events if the service was already
3059 * started and we're just deserializing */
3060 if (MANAGER_IS_RELOADING(m
))
3063 if (u
->type
!= UNIT_SERVICE
)
3066 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3068 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3072 msg
= strjoina("unit=", p
);
3073 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3075 /* We aren't allowed to send audit messages?
3076 * Then let's not retry again. */
3079 log_warning_errno(errno
, "Failed to send audit message: %m");
3085 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3086 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3087 _cleanup_free_
char *message
= NULL
;
3088 _cleanup_close_
int fd
= -1;
3091 /* Don't generate plymouth events if the service was already
3092 * started and we're just deserializing */
3093 if (MANAGER_IS_RELOADING(m
))
3096 if (!MANAGER_IS_SYSTEM(m
))
3099 if (detect_container() > 0)
3102 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3105 /* We set SOCK_NONBLOCK here so that we rather drop the
3106 * message then wait for plymouth */
3107 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3109 log_error_errno(errno
, "socket() failed: %m");
3113 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3114 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3115 log_error_errno(errno
, "connect() failed: %m");
3119 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3125 if (write(fd
, message
, n
+ 1) != n
+ 1)
3126 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3127 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3130 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3131 _cleanup_close_
int fd
= -1;
3136 fd
= open_serialization_fd("systemd-state");
3140 f
= take_fdopen(&fd
, "w+");
3148 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3153 /* The following timestamps only apply to the host system, hence only serialize them there */
3155 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3156 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3157 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3158 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3161 int manager_serialize(
3165 bool switching_root
) {
3177 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3179 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3180 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3181 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3182 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3183 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3184 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3185 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3187 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3188 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3190 t
= show_status_to_string(m
->show_status
);
3192 (void) serialize_item(f
, "show-status", t
);
3194 if (m
->log_level_overridden
)
3195 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3196 if (m
->log_target_overridden
)
3197 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3199 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3200 _cleanup_free_
char *joined
= NULL
;
3202 if (!manager_timestamp_shall_serialize(q
))
3205 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3209 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3212 if (!switching_root
)
3213 (void) serialize_strv(f
, "env", m
->client_environment
);
3215 if (m
->notify_fd
>= 0) {
3216 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3220 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3223 if (m
->cgroups_agent_fd
>= 0) {
3224 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3229 if (m
->user_lookup_fds
[0] >= 0) {
3232 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3234 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3236 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3238 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3240 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3243 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3245 r
= dynamic_user_serialize(m
, f
, fds
);
3249 manager_serialize_uid_refs(m
, f
);
3250 manager_serialize_gid_refs(m
, f
);
3252 r
= exec_runtime_serialize(m
, f
, fds
);
3256 (void) fputc('\n', f
);
3258 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3266 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3271 r
= fflush_and_check(f
);
3273 return log_error_errno(r
, "Failed to flush serialization: %m");
3275 r
= bus_fdset_add_all(m
, fds
);
3277 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3282 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3286 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3290 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3293 r
= unit_deserialize(u
, f
, fds
);
3297 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3303 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3304 const char *unit_name
;
3308 _cleanup_free_
char *line
= NULL
;
3310 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3312 return log_error_errno(r
, "Failed to read serialization line: %m");
3316 unit_name
= strstrip(line
);
3318 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3322 r
= unit_deserialize_skip(f
);
3331 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3337 log_debug("Deserializing state...");
3339 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3340 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3342 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3345 _cleanup_free_
char *line
= NULL
;
3346 const char *val
, *l
;
3348 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3350 return log_error_errno(r
, "Failed to read serialization line: %m");
3355 if (isempty(l
)) /* end marker */
3358 if ((val
= startswith(l
, "current-job-id="))) {
3361 if (safe_atou32(val
, &id
) < 0)
3362 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3364 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3366 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3369 if (safe_atou32(val
, &n
) < 0)
3370 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3372 m
->n_installed_jobs
+= n
;
3374 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3377 if (safe_atou32(val
, &n
) < 0)
3378 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3380 m
->n_failed_jobs
+= n
;
3382 } else if ((val
= startswith(l
, "taint-usr="))) {
3385 b
= parse_boolean(val
);
3387 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3389 m
->taint_usr
= m
->taint_usr
|| b
;
3391 } else if ((val
= startswith(l
, "ready-sent="))) {
3394 b
= parse_boolean(val
);
3396 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3398 m
->ready_sent
= m
->ready_sent
|| b
;
3400 } else if ((val
= startswith(l
, "taint-logged="))) {
3403 b
= parse_boolean(val
);
3405 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3407 m
->taint_logged
= m
->taint_logged
|| b
;
3409 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3412 b
= parse_boolean(val
);
3414 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3416 m
->service_watchdogs
= b
;
3418 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3421 b
= parse_boolean(val
);
3423 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3425 m
->honor_device_enumeration
= b
;
3427 } else if ((val
= startswith(l
, "show-status="))) {
3430 s
= show_status_from_string(val
);
3432 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3434 manager_set_show_status(m
, s
, "deserialization");
3436 } else if ((val
= startswith(l
, "log-level-override="))) {
3439 level
= log_level_from_string(val
);
3441 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3443 manager_override_log_level(m
, level
);
3445 } else if ((val
= startswith(l
, "log-target-override="))) {
3448 target
= log_target_from_string(val
);
3450 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3452 manager_override_log_target(m
, target
);
3454 } else if (startswith(l
, "env=")) {
3455 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3457 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3459 } else if ((val
= startswith(l
, "notify-fd="))) {
3462 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3463 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3465 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3466 safe_close(m
->notify_fd
);
3467 m
->notify_fd
= fdset_remove(fds
, fd
);
3470 } else if ((val
= startswith(l
, "notify-socket="))) {
3471 r
= free_and_strdup(&m
->notify_socket
, val
);
3475 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3478 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3479 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3481 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3482 safe_close(m
->cgroups_agent_fd
);
3483 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3486 } else if ((val
= startswith(l
, "user-lookup="))) {
3489 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3490 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3492 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3493 safe_close_pair(m
->user_lookup_fds
);
3494 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3495 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3498 } else if ((val
= startswith(l
, "dynamic-user=")))
3499 dynamic_user_deserialize_one(m
, val
, fds
);
3500 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3501 manager_deserialize_uid_refs_one(m
, val
);
3502 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3503 manager_deserialize_gid_refs_one(m
, val
);
3504 else if ((val
= startswith(l
, "exec-runtime=")))
3505 exec_runtime_deserialize_one(m
, val
, fds
);
3506 else if ((val
= startswith(l
, "subscribed="))) {
3508 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3514 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3515 val
= startswith(l
, manager_timestamp_to_string(q
));
3519 val
= startswith(val
, "-timestamp=");
3524 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3525 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3526 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3527 log_notice("Unknown serialization item '%s', ignoring.", l
);
3531 return manager_deserialize_units(m
, f
, fds
);
3534 int manager_reload(Manager
*m
) {
3535 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3536 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3537 _cleanup_fclose_
FILE *f
= NULL
;
3542 r
= manager_open_serialization(m
, &f
);
3544 return log_error_errno(r
, "Failed to create serialization file: %m");
3550 /* We are officially in reload mode from here on. */
3551 reloading
= manager_reloading_start(m
);
3553 r
= manager_serialize(m
, f
, fds
, false);
3557 if (fseeko(f
, 0, SEEK_SET
) < 0)
3558 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3560 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3563 bus_manager_send_reloading(m
, true);
3565 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3566 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3569 manager_clear_jobs_and_units(m
);
3570 lookup_paths_flush_generator(&m
->lookup_paths
);
3571 lookup_paths_free(&m
->lookup_paths
);
3572 exec_runtime_vacuum(m
);
3573 dynamic_user_vacuum(m
, false);
3574 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3575 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3577 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3579 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3581 (void) manager_run_environment_generators(m
);
3582 (void) manager_run_generators(m
);
3584 lookup_paths_log(&m
->lookup_paths
);
3586 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3587 manager_free_unit_name_maps(m
);
3589 /* First, enumerate what we can from kernel and suchlike */
3590 manager_enumerate_perpetual(m
);
3591 manager_enumerate(m
);
3593 /* Second, deserialize our stored data */
3594 r
= manager_deserialize(m
, f
, fds
);
3596 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3598 /* We don't need the serialization anymore */
3601 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3602 (void) manager_setup_notify(m
);
3603 (void) manager_setup_cgroups_agent(m
);
3604 (void) manager_setup_user_lookup_fd(m
);
3606 /* Third, fire things up! */
3607 manager_coldplug(m
);
3609 /* Clean up runtime objects no longer referenced */
3612 /* Consider the reload process complete now. */
3613 assert(m
->n_reloading
> 0);
3616 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3617 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3618 * let's always set the flag here for safety. */
3619 m
->honor_device_enumeration
= true;
3623 m
->send_reloading_done
= true;
3627 void manager_reset_failed(Manager
*m
) {
3633 HASHMAP_FOREACH(u
, m
->units
, i
)
3634 unit_reset_failed(u
);
3637 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3643 /* Returns true if the unit is inactive or going down */
3644 u
= manager_get_unit(m
, name
);
3648 return unit_inactive_or_pending(u
);
3651 static void log_taint_string(Manager
*m
) {
3652 _cleanup_free_
char *taint
= NULL
;
3656 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3659 m
->taint_logged
= true; /* only check for taint once */
3661 taint
= manager_taint_string(m
);
3665 log_struct(LOG_NOTICE
,
3666 LOG_MESSAGE("System is tainted: %s", taint
),
3668 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3671 static void manager_notify_finished(Manager
*m
) {
3672 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3673 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3675 if (MANAGER_IS_TEST_RUN(m
))
3678 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3679 char ts
[FORMAT_TIMESPAN_MAX
];
3680 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3683 size_t size
= sizeof buf
;
3685 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3686 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3687 * negative values. */
3689 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3690 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3691 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3692 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3694 if (firmware_usec
> 0)
3695 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3696 if (loader_usec
> 0)
3697 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3699 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3701 /* The initrd case on bare-metal*/
3702 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3703 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3705 log_struct(LOG_INFO
,
3706 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3707 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3708 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3709 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3710 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3712 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3713 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3714 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3715 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3717 /* The initrd-less case on bare-metal*/
3719 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3722 log_struct(LOG_INFO
,
3723 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3724 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3725 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3726 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3728 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3729 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3730 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3733 /* The container and --user case */
3734 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3735 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3737 log_struct(LOG_INFO
,
3738 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3739 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3740 LOG_MESSAGE("Startup finished in %s.",
3741 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3744 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3747 m
->ready_sent
? "STATUS=Startup finished in %s."
3749 "STATUS=Startup finished in %s.",
3750 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3751 m
->ready_sent
= true;
3753 log_taint_string(m
);
3756 static void manager_send_ready(Manager
*m
) {
3759 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3760 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3763 m
->ready_sent
= true;
3767 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3770 static void manager_check_basic_target(Manager
*m
) {
3775 /* Small shortcut */
3776 if (m
->ready_sent
&& m
->taint_logged
)
3779 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3780 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3783 /* For user managers, send out READY=1 as soon as we reach basic.target */
3784 manager_send_ready(m
);
3786 /* Log the taint string as soon as we reach basic.target */
3787 log_taint_string(m
);
3790 void manager_check_finished(Manager
*m
) {
3793 if (MANAGER_IS_RELOADING(m
))
3796 /* Verify that we have entered the event loop already, and not left it again. */
3797 if (!MANAGER_IS_RUNNING(m
))
3800 manager_check_basic_target(m
);
3802 if (hashmap_size(m
->jobs
) > 0) {
3803 if (m
->jobs_in_progress_event_source
)
3804 /* Ignore any failure, this is only for feedback */
3805 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
,
3806 manager_watch_jobs_next_time(m
));
3810 manager_flip_auto_status(m
, false, "boot finished");
3812 /* Notify Type=idle units that we are done now */
3813 manager_close_idle_pipe(m
);
3815 /* Turn off confirm spawn now */
3816 m
->confirm_spawn
= NULL
;
3818 /* No need to update ask password status when we're going non-interactive */
3819 manager_close_ask_password(m
);
3821 /* This is no longer the first boot */
3822 manager_set_first_boot(m
, false);
3824 if (MANAGER_IS_FINISHED(m
))
3827 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3829 manager_notify_finished(m
);
3831 manager_invalidate_startup_units(m
);
3834 static bool generator_path_any(const char* const* paths
) {
3838 /* Optimize by skipping the whole process by not creating output directories
3839 * if no generators are found. */
3840 STRV_FOREACH(path
, (char**) paths
)
3841 if (access(*path
, F_OK
) == 0)
3843 else if (errno
!= ENOENT
)
3844 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3849 static int manager_run_environment_generators(Manager
*m
) {
3850 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3851 _cleanup_strv_free_
char **paths
= NULL
;
3853 [STDOUT_GENERATE
] = &tmp
,
3854 [STDOUT_COLLECT
] = &tmp
,
3855 [STDOUT_CONSUME
] = &m
->transient_environment
,
3859 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3862 paths
= env_generator_binary_paths(MANAGER_IS_SYSTEM(m
));
3866 if (!generator_path_any((const char* const*) paths
))
3869 RUN_WITH_UMASK(0022)
3870 r
= execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3871 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3875 static int manager_run_generators(Manager
*m
) {
3876 _cleanup_strv_free_
char **paths
= NULL
;
3877 const char *argv
[5];
3882 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3885 paths
= generator_binary_paths(m
->unit_file_scope
);
3889 if (!generator_path_any((const char* const*) paths
))
3892 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3894 log_error_errno(r
, "Failed to create generator directories: %m");
3898 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3899 argv
[1] = m
->lookup_paths
.generator
;
3900 argv
[2] = m
->lookup_paths
.generator_early
;
3901 argv
[3] = m
->lookup_paths
.generator_late
;
3904 RUN_WITH_UMASK(0022)
3905 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3906 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3911 lookup_paths_trim_generator(&m
->lookup_paths
);
3915 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3920 if (strv_isempty(plus
))
3923 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3927 sanitize_environment(a
);
3929 return strv_free_and_replace(m
->transient_environment
, a
);
3932 int manager_client_environment_modify(
3937 char **a
= NULL
, **b
= NULL
, **l
;
3941 if (strv_isempty(minus
) && strv_isempty(plus
))
3944 l
= m
->client_environment
;
3946 if (!strv_isempty(minus
)) {
3947 a
= strv_env_delete(l
, 1, minus
);
3954 if (!strv_isempty(plus
)) {
3955 b
= strv_env_merge(2, l
, plus
);
3964 if (m
->client_environment
!= l
)
3965 strv_free(m
->client_environment
);
3972 m
->client_environment
= sanitize_environment(l
);
3976 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3982 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3990 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3995 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3996 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3998 if (!default_rlimit
[i
])
4001 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
4009 void manager_recheck_dbus(Manager
*m
) {
4012 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
4013 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
4014 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
4015 * while in the user instance we can assume it's already there. */
4017 if (MANAGER_IS_RELOADING(m
))
4018 return; /* don't check while we are reloading… */
4020 if (manager_dbus_is_running(m
, false)) {
4021 (void) bus_init_api(m
);
4023 if (MANAGER_IS_SYSTEM(m
))
4024 (void) bus_init_system(m
);
4026 (void) bus_done_api(m
);
4028 if (MANAGER_IS_SYSTEM(m
))
4029 (void) bus_done_system(m
);
4033 static bool manager_journal_is_running(Manager
*m
) {
4038 if (MANAGER_IS_TEST_RUN(m
))
4041 /* If we are the user manager we can safely assume that the journal is up */
4042 if (!MANAGER_IS_SYSTEM(m
))
4045 /* Check that the socket is not only up, but in RUNNING state */
4046 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4049 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4052 /* Similar, check if the daemon itself is fully up, too */
4053 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4056 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4062 void disable_printk_ratelimit(void) {
4063 /* Disable kernel's printk ratelimit.
4065 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4066 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4067 * setting takes precedence. */
4070 r
= sysctl_write("kernel/printk_devkmsg", "on");
4072 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4075 void manager_recheck_journal(Manager
*m
) {
4079 /* Don't bother with this unless we are in the special situation of being PID 1 */
4080 if (getpid_cached() != 1)
4083 /* Don't check this while we are reloading, things might still change */
4084 if (MANAGER_IS_RELOADING(m
))
4087 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4088 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4089 * an activation ourselves we can't fulfill. */
4090 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4094 void manager_set_show_status(Manager
*m
, ShowStatus mode
, const char *reason
) {
4096 assert(mode
>= 0 && mode
< _SHOW_STATUS_MAX
);
4098 if (!MANAGER_IS_SYSTEM(m
))
4101 if (mode
== m
->show_status
)
4104 bool enabled
= IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4105 log_debug("%s (%s) showing of status (%s).",
4106 enabled
? "Enabling" : "Disabling",
4107 strna(show_status_to_string(mode
)),
4109 m
->show_status
= mode
;
4112 (void) touch("/run/systemd/show-status");
4114 (void) unlink("/run/systemd/show-status");
4117 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4120 if (!MANAGER_IS_SYSTEM(m
))
4123 if (m
->no_console_output
)
4126 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4129 /* If we cannot find out the status properly, just proceed. */
4130 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4133 if (type
== STATUS_TYPE_NOTICE
&& m
->show_status
!= SHOW_STATUS_NO
)
4136 return show_status_on(m
->show_status
);
4139 const char *manager_get_confirm_spawn(Manager
*m
) {
4140 static int last_errno
= 0;
4146 /* Here's the deal: we want to test the validity of the console but don't want
4147 * PID1 to go through the whole console process which might block. But we also
4148 * want to warn the user only once if something is wrong with the console so we
4149 * cannot do the sanity checks after spawning our children. So here we simply do
4150 * really basic tests to hopefully trap common errors.
4152 * If the console suddenly disappear at the time our children will really it
4153 * then they will simply fail to acquire it and a positive answer will be
4154 * assumed. New children will fallback to /dev/console though.
4156 * Note: TTYs are devices that can come and go any time, and frequently aren't
4157 * available yet during early boot (consider a USB rs232 dongle...). If for any
4158 * reason the configured console is not ready, we fallback to the default
4161 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4162 return m
->confirm_spawn
;
4164 if (stat(m
->confirm_spawn
, &st
) < 0) {
4169 if (!S_ISCHR(st
.st_mode
)) {
4175 return m
->confirm_spawn
;
4178 if (last_errno
!= r
)
4179 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4181 return "/dev/console";
4184 void manager_set_first_boot(Manager
*m
, bool b
) {
4187 if (!MANAGER_IS_SYSTEM(m
))
4190 if (m
->first_boot
!= (int) b
) {
4192 (void) touch("/run/systemd/first-boot");
4194 (void) unlink("/run/systemd/first-boot");
4200 void manager_disable_confirm_spawn(void) {
4201 (void) touch("/run/systemd/confirm_spawn_disabled");
4204 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4205 if (!m
->confirm_spawn
)
4208 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4211 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4214 /* If m is NULL, assume we're after shutdown and let the messages through. */
4216 if (m
&& !manager_get_show_status(m
, type
))
4219 /* XXX We should totally drop the check for ephemeral here
4220 * and thus effectively make 'Type=idle' pointless. */
4221 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4224 va_start(ap
, format
);
4225 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4229 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4230 char p
[strlen(path
)+1];
4236 path_simplify(p
, false);
4238 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4241 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4246 assert(u
->manager
== m
);
4248 size
= set_size(m
->failed_units
);
4251 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4255 if (set_put(m
->failed_units
, u
) < 0)
4258 (void) set_remove(m
->failed_units
, u
);
4260 if (set_size(m
->failed_units
) != size
)
4261 bus_manager_send_change_signal(m
);
4266 ManagerState
manager_state(Manager
*m
) {
4271 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4272 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4273 if (u
&& unit_active_or_pending(u
))
4274 return MANAGER_STOPPING
;
4276 /* Did we ever finish booting? If not then we are still starting up */
4277 if (!MANAGER_IS_FINISHED(m
)) {
4279 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4280 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4281 return MANAGER_INITIALIZING
;
4283 return MANAGER_STARTING
;
4286 if (MANAGER_IS_SYSTEM(m
)) {
4287 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4288 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4289 if (u
&& unit_active_or_pending(u
))
4290 return MANAGER_MAINTENANCE
;
4292 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4293 if (u
&& unit_active_or_pending(u
))
4294 return MANAGER_MAINTENANCE
;
4297 /* Are there any failed units? If so, we are in degraded mode */
4298 if (set_size(m
->failed_units
) > 0)
4299 return MANAGER_DEGRADED
;
4301 return MANAGER_RUNNING
;
4304 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4306 static void manager_unref_uid_internal(
4311 int (*_clean_ipc
)(uid_t uid
)) {
4317 assert(uid_is_valid(uid
));
4320 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4321 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4323 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4324 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4325 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4326 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4328 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4329 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4331 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4334 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4336 n
= c
& ~DESTROY_IPC_FLAG
;
4340 if (destroy_now
&& n
== 0) {
4341 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4343 if (c
& DESTROY_IPC_FLAG
) {
4344 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4345 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4347 (void) _clean_ipc(uid
);
4350 c
= n
| (c
& DESTROY_IPC_FLAG
);
4351 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4355 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4356 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4359 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4360 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4363 static int manager_ref_uid_internal(
4374 assert(uid_is_valid(uid
));
4376 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4377 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4379 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4380 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4382 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4385 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4389 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4391 n
= c
& ~DESTROY_IPC_FLAG
;
4394 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4397 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4399 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4402 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4403 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4406 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4407 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4410 static void manager_vacuum_uid_refs_internal(
4413 int (*_clean_ipc
)(uid_t uid
)) {
4422 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4426 uid
= PTR_TO_UID(k
);
4427 c
= PTR_TO_UINT32(p
);
4429 n
= c
& ~DESTROY_IPC_FLAG
;
4433 if (c
& DESTROY_IPC_FLAG
) {
4434 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4435 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4437 (void) _clean_ipc(uid
);
4440 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4444 void manager_vacuum_uid_refs(Manager
*m
) {
4445 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4448 void manager_vacuum_gid_refs(Manager
*m
) {
4449 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4452 static void manager_serialize_uid_refs_internal(
4456 const char *field_name
) {
4466 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4467 * of it is better rebuild after a reload/reexec. */
4469 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4473 uid
= PTR_TO_UID(k
);
4474 c
= PTR_TO_UINT32(p
);
4476 if (!(c
& DESTROY_IPC_FLAG
))
4479 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4483 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4484 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4487 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4488 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4491 static void manager_deserialize_uid_refs_one_internal(
4494 const char *value
) {
4504 r
= parse_uid(value
, &uid
);
4505 if (r
< 0 || uid
== 0) {
4506 log_debug("Unable to parse UID reference serialization: " UID_FMT
, uid
);
4510 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4516 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4517 if (c
& DESTROY_IPC_FLAG
)
4520 c
|= DESTROY_IPC_FLAG
;
4522 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4524 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4529 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4530 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4533 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4534 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4537 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4541 char unit_name
[UNIT_NAME_MAX
+1];
4544 Manager
*m
= userdata
;
4552 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4553 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4554 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4556 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4558 if (IN_SET(errno
, EINTR
, EAGAIN
))
4561 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4564 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4565 log_warning("Received too short user lookup message, ignoring.");
4569 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4570 log_warning("Received too long user lookup message, ignoring.");
4574 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4575 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4579 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4580 if (memchr(buffer
.unit_name
, 0, n
)) {
4581 log_warning("Received lookup message with embedded NUL character, ignoring.");
4585 buffer
.unit_name
[n
] = 0;
4586 u
= manager_get_unit(m
, buffer
.unit_name
);
4588 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4592 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4594 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4598 char *manager_taint_string(Manager
*m
) {
4599 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4603 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4604 * Only things that are detected at runtime should be tagged
4605 * here. For stuff that is set during compilation, emit a warning
4606 * in the configuration phase. */
4610 buf
= new(char, sizeof("split-usr:"
4614 "overflowuid-not-65534:"
4615 "overflowgid-not-65534:"));
4623 e
= stpcpy(e
, "split-usr:");
4625 if (access("/proc/cgroups", F_OK
) < 0)
4626 e
= stpcpy(e
, "cgroups-missing:");
4628 if (clock_is_localtime(NULL
) > 0)
4629 e
= stpcpy(e
, "local-hwclock:");
4631 r
= readlink_malloc("/var/run", &destination
);
4632 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4633 e
= stpcpy(e
, "var-run-bad:");
4635 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4636 if (r
>= 0 && !streq(overflowuid
, "65534"))
4637 e
= stpcpy(e
, "overflowuid-not-65534:");
4639 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4640 if (r
>= 0 && !streq(overflowgid
, "65534"))
4641 e
= stpcpy(e
, "overflowgid-not-65534:");
4643 /* remove the last ':' */
4650 void manager_ref_console(Manager
*m
) {
4656 void manager_unref_console(Manager
*m
) {
4658 assert(m
->n_on_console
> 0);
4661 if (m
->n_on_console
== 0)
4662 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4665 void manager_override_log_level(Manager
*m
, int level
) {
4666 _cleanup_free_
char *s
= NULL
;
4669 if (!m
->log_level_overridden
) {
4670 m
->original_log_level
= log_get_max_level();
4671 m
->log_level_overridden
= true;
4674 (void) log_level_to_string_alloc(level
, &s
);
4675 log_info("Setting log level to %s.", strna(s
));
4677 log_set_max_level(level
);
4680 void manager_restore_original_log_level(Manager
*m
) {
4681 _cleanup_free_
char *s
= NULL
;
4684 if (!m
->log_level_overridden
)
4687 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4688 log_info("Restoring log level to original (%s).", strna(s
));
4690 log_set_max_level(m
->original_log_level
);
4691 m
->log_level_overridden
= false;
4694 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4697 if (!m
->log_target_overridden
) {
4698 m
->original_log_target
= log_get_target();
4699 m
->log_target_overridden
= true;
4702 log_info("Setting log target to %s.", log_target_to_string(target
));
4703 log_set_target(target
);
4706 void manager_restore_original_log_target(Manager
*m
) {
4709 if (!m
->log_target_overridden
)
4712 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4714 log_set_target(m
->original_log_target
);
4715 m
->log_target_overridden
= false;
4718 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4720 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4721 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4722 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4726 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4727 [MANAGER_INITIALIZING
] = "initializing",
4728 [MANAGER_STARTING
] = "starting",
4729 [MANAGER_RUNNING
] = "running",
4730 [MANAGER_DEGRADED
] = "degraded",
4731 [MANAGER_MAINTENANCE
] = "maintenance",
4732 [MANAGER_STOPPING
] = "stopping",
4735 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4737 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4738 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4739 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4740 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4741 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4742 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4743 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4744 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4745 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4746 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4747 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4748 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4749 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4750 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4751 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4752 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4753 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4754 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4755 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4758 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4760 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4761 [OOM_CONTINUE
] = "continue",
4762 [OOM_STOP
] = "stop",
4763 [OOM_KILL
] = "kill",
4766 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);