1 /* SPDX-License-Identifier: LGPL-2.1+ */
8 #include <sys/inotify.h>
10 #include <sys/reboot.h>
11 #include <sys/timerfd.h>
19 #include "sd-daemon.h"
20 #include "sd-messages.h"
23 #include "all-units.h"
24 #include "alloc-util.h"
26 #include "boot-timestamps.h"
27 #include "bus-common-errors.h"
28 #include "bus-error.h"
29 #include "bus-kernel.h"
31 #include "clean-ipc.h"
32 #include "clock-util.h"
34 #include "dbus-manager.h"
35 #include "dbus-unit.h"
38 #include "dirent-util.h"
41 #include "exec-util.h"
43 #include "exit-status.h"
51 #include "locale-setup.h"
55 #include "memory-util.h"
57 #include "parse-util.h"
58 #include "path-lookup.h"
59 #include "path-util.h"
60 #include "process-util.h"
61 #include "ratelimit.h"
62 #include "rlimit-util.h"
64 #include "serialize.h"
65 #include "signal-util.h"
66 #include "socket-util.h"
68 #include "stat-util.h"
69 #include "string-table.h"
70 #include "string-util.h"
73 #include "sysctl-util.h"
74 #include "syslog-util.h"
75 #include "terminal-util.h"
76 #include "time-util.h"
77 #include "transaction.h"
78 #include "umask-util.h"
79 #include "unit-name.h"
80 #include "user-util.h"
84 #define NOTIFY_RCVBUF_SIZE (8*1024*1024)
85 #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024)
87 /* Initial delay and the interval for printing status messages about running jobs */
88 #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC)
89 #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
90 #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
92 /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until
93 * the queue gets more empty. */
94 #define MANAGER_BUS_BUSY_THRESHOLD 1024LU
96 /* How many units and jobs to process of the bus queue before returning to the event loop. */
97 #define MANAGER_BUS_MESSAGE_BUDGET 100U
99 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
100 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
101 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
102 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
103 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
104 static int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
105 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
);
106 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
);
107 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
);
108 static int manager_dispatch_timezone_change(sd_event_source
*source
, const struct inotify_event
*event
, void *userdata
);
109 static int manager_run_environment_generators(Manager
*m
);
110 static int manager_run_generators(Manager
*m
);
112 static void manager_watch_jobs_in_progress(Manager
*m
) {
118 /* We do not want to show the cylon animation if the user
119 * needs to confirm service executions otherwise confirmation
120 * messages will be screwed by the cylon animation. */
121 if (!manager_is_confirm_spawn_disabled(m
))
124 if (m
->jobs_in_progress_event_source
)
127 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
;
128 r
= sd_event_add_time(
130 &m
->jobs_in_progress_event_source
,
133 manager_dispatch_jobs_in_progress
, m
);
137 (void) sd_event_source_set_description(m
->jobs_in_progress_event_source
, "manager-jobs-in-progress");
140 #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL))
142 static void draw_cylon(char buffer
[], size_t buflen
, unsigned width
, unsigned pos
) {
145 assert(buflen
>= CYLON_BUFFER_EXTRA
+ width
+ 1);
146 assert(pos
<= width
+1); /* 0 or width+1 mean that the center light is behind the corner */
150 p
= mempset(p
, ' ', pos
-2);
151 if (log_get_show_color())
152 p
= stpcpy(p
, ANSI_RED
);
156 if (pos
> 0 && pos
<= width
) {
157 if (log_get_show_color())
158 p
= stpcpy(p
, ANSI_HIGHLIGHT_RED
);
162 if (log_get_show_color())
163 p
= stpcpy(p
, ANSI_NORMAL
);
166 if (log_get_show_color())
167 p
= stpcpy(p
, ANSI_RED
);
170 p
= mempset(p
, ' ', width
-1-pos
);
171 if (log_get_show_color())
172 strcpy(p
, ANSI_NORMAL
);
176 void manager_flip_auto_status(Manager
*m
, bool enable
) {
180 if (m
->show_status
== SHOW_STATUS_AUTO
)
181 manager_set_show_status(m
, SHOW_STATUS_TEMPORARY
);
183 if (m
->show_status
== SHOW_STATUS_TEMPORARY
)
184 manager_set_show_status(m
, SHOW_STATUS_AUTO
);
188 static void manager_print_jobs_in_progress(Manager
*m
) {
189 _cleanup_free_
char *job_of_n
= NULL
;
192 unsigned counter
= 0, print_nr
;
193 char cylon
[6 + CYLON_BUFFER_EXTRA
+ 1];
195 char time
[FORMAT_TIMESPAN_MAX
], limit
[FORMAT_TIMESPAN_MAX
] = "no limit";
199 assert(m
->n_running_jobs
> 0);
201 manager_flip_auto_status(m
, true);
203 print_nr
= (m
->jobs_in_progress_iteration
/ JOBS_IN_PROGRESS_PERIOD_DIVISOR
) % m
->n_running_jobs
;
205 HASHMAP_FOREACH(j
, m
->jobs
, i
)
206 if (j
->state
== JOB_RUNNING
&& counter
++ == print_nr
)
209 /* m->n_running_jobs must be consistent with the contents of m->jobs,
210 * so the above loop must have succeeded in finding j. */
211 assert(counter
== print_nr
+ 1);
214 cylon_pos
= m
->jobs_in_progress_iteration
% 14;
216 cylon_pos
= 14 - cylon_pos
;
217 draw_cylon(cylon
, sizeof(cylon
), 6, cylon_pos
);
219 m
->jobs_in_progress_iteration
++;
221 if (m
->n_running_jobs
> 1) {
222 if (asprintf(&job_of_n
, "(%u of %u) ", counter
, m
->n_running_jobs
) < 0)
226 format_timespan(time
, sizeof(time
), now(CLOCK_MONOTONIC
) - j
->begin_usec
, 1*USEC_PER_SEC
);
227 if (job_get_timeout(j
, &x
) > 0)
228 format_timespan(limit
, sizeof(limit
), x
- j
->begin_usec
, 1*USEC_PER_SEC
);
230 manager_status_printf(m
, STATUS_TYPE_EPHEMERAL
, cylon
,
231 "%sA %s job is running for %s (%s / %s)",
233 job_type_to_string(j
->type
),
234 unit_status_string(j
->unit
),
238 static int have_ask_password(void) {
239 _cleanup_closedir_
DIR *dir
;
242 dir
= opendir("/run/systemd/ask-password");
250 FOREACH_DIRENT_ALL(de
, dir
, return -errno
) {
251 if (startswith(de
->d_name
, "ask."))
257 static int manager_dispatch_ask_password_fd(sd_event_source
*source
,
258 int fd
, uint32_t revents
, void *userdata
) {
259 Manager
*m
= userdata
;
265 m
->have_ask_password
= have_ask_password();
266 if (m
->have_ask_password
< 0)
267 /* Log error but continue. Negative have_ask_password
268 * is treated as unknown status. */
269 log_error_errno(m
->have_ask_password
, "Failed to list /run/systemd/ask-password: %m");
274 static void manager_close_ask_password(Manager
*m
) {
277 m
->ask_password_event_source
= sd_event_source_unref(m
->ask_password_event_source
);
278 m
->ask_password_inotify_fd
= safe_close(m
->ask_password_inotify_fd
);
279 m
->have_ask_password
= -EINVAL
;
282 static int manager_check_ask_password(Manager
*m
) {
287 if (!m
->ask_password_event_source
) {
288 assert(m
->ask_password_inotify_fd
< 0);
290 (void) mkdir_p_label("/run/systemd/ask-password", 0755);
292 m
->ask_password_inotify_fd
= inotify_init1(IN_NONBLOCK
|IN_CLOEXEC
);
293 if (m
->ask_password_inotify_fd
< 0)
294 return log_error_errno(errno
, "Failed to create inotify object: %m");
296 r
= inotify_add_watch_and_warn(m
->ask_password_inotify_fd
,
297 "/run/systemd/ask-password",
298 IN_CREATE
|IN_DELETE
|IN_MOVE
);
300 manager_close_ask_password(m
);
304 r
= sd_event_add_io(m
->event
, &m
->ask_password_event_source
,
305 m
->ask_password_inotify_fd
, EPOLLIN
,
306 manager_dispatch_ask_password_fd
, m
);
308 log_error_errno(errno
, "Failed to add event source for /run/systemd/ask-password: %m");
309 manager_close_ask_password(m
);
313 (void) sd_event_source_set_description(m
->ask_password_event_source
, "manager-ask-password");
315 /* Queries might have been added meanwhile... */
316 manager_dispatch_ask_password_fd(m
->ask_password_event_source
,
317 m
->ask_password_inotify_fd
, EPOLLIN
, m
);
320 return m
->have_ask_password
;
323 static int manager_watch_idle_pipe(Manager
*m
) {
328 if (m
->idle_pipe_event_source
)
331 if (m
->idle_pipe
[2] < 0)
334 r
= sd_event_add_io(m
->event
, &m
->idle_pipe_event_source
, m
->idle_pipe
[2], EPOLLIN
, manager_dispatch_idle_pipe_fd
, m
);
336 return log_error_errno(r
, "Failed to watch idle pipe: %m");
338 (void) sd_event_source_set_description(m
->idle_pipe_event_source
, "manager-idle-pipe");
343 static void manager_close_idle_pipe(Manager
*m
) {
346 m
->idle_pipe_event_source
= sd_event_source_unref(m
->idle_pipe_event_source
);
348 safe_close_pair(m
->idle_pipe
);
349 safe_close_pair(m
->idle_pipe
+ 2);
352 static int manager_setup_time_change(Manager
*m
) {
357 if (MANAGER_IS_TEST_RUN(m
))
360 m
->time_change_event_source
= sd_event_source_unref(m
->time_change_event_source
);
361 m
->time_change_fd
= safe_close(m
->time_change_fd
);
363 m
->time_change_fd
= time_change_fd();
364 if (m
->time_change_fd
< 0)
365 return log_error_errno(m
->time_change_fd
, "Failed to create timer change timer fd: %m");
367 r
= sd_event_add_io(m
->event
, &m
->time_change_event_source
, m
->time_change_fd
, EPOLLIN
, manager_dispatch_time_change_fd
, m
);
369 return log_error_errno(r
, "Failed to create time change event source: %m");
371 /* Schedule this slightly earlier than the .timer event sources */
372 r
= sd_event_source_set_priority(m
->time_change_event_source
, SD_EVENT_PRIORITY_NORMAL
-1);
374 return log_error_errno(r
, "Failed to set priority of time change event sources: %m");
376 (void) sd_event_source_set_description(m
->time_change_event_source
, "manager-time-change");
378 log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
383 static int manager_read_timezone_stat(Manager
*m
) {
389 /* Read the current stat() data of /etc/localtime so that we detect changes */
390 if (lstat("/etc/localtime", &st
) < 0) {
391 log_debug_errno(errno
, "Failed to stat /etc/localtime, ignoring: %m");
392 changed
= m
->etc_localtime_accessible
;
393 m
->etc_localtime_accessible
= false;
397 k
= timespec_load(&st
.st_mtim
);
398 changed
= !m
->etc_localtime_accessible
|| k
!= m
->etc_localtime_mtime
;
400 m
->etc_localtime_mtime
= k
;
401 m
->etc_localtime_accessible
= true;
407 static int manager_setup_timezone_change(Manager
*m
) {
408 _cleanup_(sd_event_source_unrefp
) sd_event_source
*new_event
= NULL
;
413 if (MANAGER_IS_TEST_RUN(m
))
416 /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even
417 * though another link might be kept), renames, and file close operations after writing. Note we don't bother
418 * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count
419 * went to zero and all fds to it are closed.
421 * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases
424 * Note that we create the new event source first here, before releasing the old one. This should optimize
425 * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */
427 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc/localtime",
428 IN_ATTRIB
|IN_MOVE_SELF
|IN_CLOSE_WRITE
|IN_DONT_FOLLOW
, manager_dispatch_timezone_change
, m
);
430 /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by
431 * O_CREATE or by rename() */
433 log_debug_errno(r
, "/etc/localtime doesn't exist yet, watching /etc instead.");
434 r
= sd_event_add_inotify(m
->event
, &new_event
, "/etc",
435 IN_CREATE
|IN_MOVED_TO
|IN_ONLYDIR
, manager_dispatch_timezone_change
, m
);
438 return log_error_errno(r
, "Failed to create timezone change event source: %m");
440 /* Schedule this slightly earlier than the .timer event sources */
441 r
= sd_event_source_set_priority(new_event
, SD_EVENT_PRIORITY_NORMAL
-1);
443 return log_error_errno(r
, "Failed to set priority of timezone change event sources: %m");
445 sd_event_source_unref(m
->timezone_change_event_source
);
446 m
->timezone_change_event_source
= TAKE_PTR(new_event
);
451 static int enable_special_signals(Manager
*m
) {
452 _cleanup_close_
int fd
= -1;
456 if (MANAGER_IS_TEST_RUN(m
))
459 /* Enable that we get SIGINT on control-alt-del. In containers
460 * this will fail with EPERM (older) or EINVAL (newer), so
462 if (reboot(RB_DISABLE_CAD
) < 0 && !IN_SET(errno
, EPERM
, EINVAL
))
463 log_warning_errno(errno
, "Failed to enable ctrl-alt-del handling: %m");
465 fd
= open_terminal("/dev/tty0", O_RDWR
|O_NOCTTY
|O_CLOEXEC
);
467 /* Support systems without virtual console */
469 log_warning_errno(errno
, "Failed to open /dev/tty0: %m");
471 /* Enable that we get SIGWINCH on kbrequest */
472 if (ioctl(fd
, KDSIGACCEPT
, SIGWINCH
) < 0)
473 log_warning_errno(errno
, "Failed to enable kbrequest handling: %m");
479 #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1)
481 static int manager_setup_signals(Manager
*m
) {
482 struct sigaction sa
= {
483 .sa_handler
= SIG_DFL
,
484 .sa_flags
= SA_NOCLDSTOP
|SA_RESTART
,
491 assert_se(sigaction(SIGCHLD
, &sa
, NULL
) == 0);
493 /* We make liberal use of realtime signals here. On
494 * Linux/glibc we have 30 of them (with the exception of Linux
495 * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
498 assert_se(sigemptyset(&mask
) == 0);
499 sigset_add_many(&mask
,
500 SIGCHLD
, /* Child died */
501 SIGTERM
, /* Reexecute daemon */
502 SIGHUP
, /* Reload configuration */
503 SIGUSR1
, /* systemd/upstart: reconnect to D-Bus */
504 SIGUSR2
, /* systemd: dump status */
505 SIGINT
, /* Kernel sends us this on control-alt-del */
506 SIGWINCH
, /* Kernel sends us this on kbrequest (alt-arrowup) */
507 SIGPWR
, /* Some kernel drivers and upsd send us this on power failure */
509 SIGRTMIN
+0, /* systemd: start default.target */
510 SIGRTMIN
+1, /* systemd: isolate rescue.target */
511 SIGRTMIN
+2, /* systemd: isolate emergency.target */
512 SIGRTMIN
+3, /* systemd: start halt.target */
513 SIGRTMIN
+4, /* systemd: start poweroff.target */
514 SIGRTMIN
+5, /* systemd: start reboot.target */
515 SIGRTMIN
+6, /* systemd: start kexec.target */
517 /* ... space for more special targets ... */
519 SIGRTMIN
+13, /* systemd: Immediate halt */
520 SIGRTMIN
+14, /* systemd: Immediate poweroff */
521 SIGRTMIN
+15, /* systemd: Immediate reboot */
522 SIGRTMIN
+16, /* systemd: Immediate kexec */
524 /* ... space for more immediate system state changes ... */
526 SIGRTMIN
+20, /* systemd: enable status messages */
527 SIGRTMIN
+21, /* systemd: disable status messages */
528 SIGRTMIN
+22, /* systemd: set log level to LOG_DEBUG */
529 SIGRTMIN
+23, /* systemd: set log level to LOG_INFO */
530 SIGRTMIN
+24, /* systemd: Immediate exit (--user only) */
532 /* .. one free signal here ... */
534 /* Apparently Linux on hppa had fewer RT signals until v3.18,
535 * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered,
536 * see commit v3.17-7614-g1f25df2eff.
538 * We cannot unconditionally make use of those signals here,
539 * so let's use a runtime check. Since these commands are
540 * accessible by different means and only really a safety
541 * net, the missing functionality on hppa shouldn't matter.
544 RTSIG_IF_AVAILABLE(SIGRTMIN
+26), /* systemd: set log target to journal-or-kmsg */
545 RTSIG_IF_AVAILABLE(SIGRTMIN
+27), /* systemd: set log target to console */
546 RTSIG_IF_AVAILABLE(SIGRTMIN
+28), /* systemd: set log target to kmsg */
547 RTSIG_IF_AVAILABLE(SIGRTMIN
+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */
549 /* ... one free signal here SIGRTMIN+30 ... */
551 assert_se(sigprocmask(SIG_SETMASK
, &mask
, NULL
) == 0);
553 m
->signal_fd
= signalfd(-1, &mask
, SFD_NONBLOCK
|SFD_CLOEXEC
);
554 if (m
->signal_fd
< 0)
557 r
= sd_event_add_io(m
->event
, &m
->signal_event_source
, m
->signal_fd
, EPOLLIN
, manager_dispatch_signal_fd
, m
);
561 (void) sd_event_source_set_description(m
->signal_event_source
, "manager-signal");
563 /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the
564 * notify processing can still figure out to which process/service a message belongs, before we reap the
565 * process. Also, process this before handling cgroup notifications, so that we always collect child exit
566 * status information before detecting that there's no process in a cgroup. */
567 r
= sd_event_source_set_priority(m
->signal_event_source
, SD_EVENT_PRIORITY_NORMAL
-6);
571 if (MANAGER_IS_SYSTEM(m
))
572 return enable_special_signals(m
);
577 static char** sanitize_environment(char **l
) {
579 /* Let's remove some environment variables that we need ourselves to communicate with our clients */
600 /* Let's order the environment alphabetically, just to make it pretty */
606 int manager_default_environment(Manager
*m
) {
611 m
->transient_environment
= strv_free(m
->transient_environment
);
613 if (MANAGER_IS_SYSTEM(m
)) {
614 /* The system manager always starts with a clean
615 * environment for its children. It does not import
616 * the kernel's or the parents' exported variables.
618 * The initial passed environment is untouched to keep
619 * /proc/self/environ valid; it is used for tagging
620 * the init process inside containers. */
621 m
->transient_environment
= strv_new("PATH=" DEFAULT_PATH
);
622 if (!m
->transient_environment
)
625 /* Import locale variables LC_*= from configuration */
626 (void) locale_setup(&m
->transient_environment
);
628 _cleanup_free_
char *k
= NULL
;
630 /* The user manager passes its own environment
631 * along to its children, except for $PATH. */
632 m
->transient_environment
= strv_copy(environ
);
633 if (!m
->transient_environment
)
636 k
= strdup("PATH=" DEFAULT_USER_PATH
);
640 r
= strv_env_replace(&m
->transient_environment
, k
);
646 sanitize_environment(m
->transient_environment
);
651 static int manager_setup_prefix(Manager
*m
) {
657 static const struct table_entry paths_system
[_EXEC_DIRECTORY_TYPE_MAX
] = {
658 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_SYSTEM_RUNTIME
, NULL
},
659 [EXEC_DIRECTORY_STATE
] = { SD_PATH_SYSTEM_STATE_PRIVATE
, NULL
},
660 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_SYSTEM_STATE_CACHE
, NULL
},
661 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_SYSTEM_STATE_LOGS
, NULL
},
662 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_SYSTEM_CONFIGURATION
, NULL
},
665 static const struct table_entry paths_user
[_EXEC_DIRECTORY_TYPE_MAX
] = {
666 [EXEC_DIRECTORY_RUNTIME
] = { SD_PATH_USER_RUNTIME
, NULL
},
667 [EXEC_DIRECTORY_STATE
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
668 [EXEC_DIRECTORY_CACHE
] = { SD_PATH_USER_STATE_CACHE
, NULL
},
669 [EXEC_DIRECTORY_LOGS
] = { SD_PATH_USER_CONFIGURATION
, "log" },
670 [EXEC_DIRECTORY_CONFIGURATION
] = { SD_PATH_USER_CONFIGURATION
, NULL
},
673 const struct table_entry
*p
;
679 if (MANAGER_IS_SYSTEM(m
))
684 for (i
= 0; i
< _EXEC_DIRECTORY_TYPE_MAX
; i
++) {
685 r
= sd_path_home(p
[i
].type
, p
[i
].suffix
, &m
->prefix
[i
]);
693 static void manager_free_unit_name_maps(Manager
*m
) {
694 m
->unit_id_map
= hashmap_free(m
->unit_id_map
);
695 m
->unit_name_map
= hashmap_free(m
->unit_name_map
);
696 m
->unit_path_cache
= set_free_free(m
->unit_path_cache
);
697 m
->unit_cache_mtime
= 0;
700 static int manager_setup_run_queue(Manager
*m
) {
704 assert(!m
->run_queue_event_source
);
706 r
= sd_event_add_defer(m
->event
, &m
->run_queue_event_source
, manager_dispatch_run_queue
, m
);
710 r
= sd_event_source_set_priority(m
->run_queue_event_source
, SD_EVENT_PRIORITY_IDLE
);
714 r
= sd_event_source_set_enabled(m
->run_queue_event_source
, SD_EVENT_OFF
);
718 (void) sd_event_source_set_description(m
->run_queue_event_source
, "manager-run-queue");
723 static int manager_setup_sigchld_event_source(Manager
*m
) {
727 assert(!m
->sigchld_event_source
);
729 r
= sd_event_add_defer(m
->event
, &m
->sigchld_event_source
, manager_dispatch_sigchld
, m
);
733 r
= sd_event_source_set_priority(m
->sigchld_event_source
, SD_EVENT_PRIORITY_NORMAL
-7);
737 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
741 (void) sd_event_source_set_description(m
->sigchld_event_source
, "manager-sigchld");
746 int manager_new(UnitFileScope scope
, ManagerTestRunFlags test_run_flags
, Manager
**_m
) {
747 _cleanup_(manager_freep
) Manager
*m
= NULL
;
751 assert(IN_SET(scope
, UNIT_FILE_SYSTEM
, UNIT_FILE_USER
));
758 .unit_file_scope
= scope
,
759 .objective
= _MANAGER_OBJECTIVE_INVALID
,
761 .status_unit_format
= STATUS_UNIT_FORMAT_DEFAULT
,
763 .default_timer_accuracy_usec
= USEC_PER_MINUTE
,
764 .default_memory_accounting
= MEMORY_ACCOUNTING_DEFAULT
,
765 .default_tasks_accounting
= true,
766 .default_tasks_max
= UINT64_MAX
,
767 .default_timeout_start_usec
= DEFAULT_TIMEOUT_USEC
,
768 .default_timeout_stop_usec
= DEFAULT_TIMEOUT_USEC
,
769 .default_restart_usec
= DEFAULT_RESTART_USEC
,
771 .original_log_level
= -1,
772 .original_log_target
= _LOG_TARGET_INVALID
,
775 .cgroups_agent_fd
= -1,
777 .time_change_fd
= -1,
778 .user_lookup_fds
= { -1, -1 },
779 .private_listen_fd
= -1,
781 .cgroup_inotify_fd
= -1,
782 .pin_cgroupfs_fd
= -1,
783 .ask_password_inotify_fd
= -1,
784 .idle_pipe
= { -1, -1, -1, -1},
786 /* start as id #1, so that we can leave #0 around as "null-like" value */
789 .have_ask_password
= -EINVAL
, /* we don't know */
791 .test_run_flags
= test_run_flags
,
793 .default_oom_policy
= OOM_STOP
,
797 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0)
798 boot_timestamps(m
->timestamps
+ MANAGER_TIMESTAMP_USERSPACE
,
799 m
->timestamps
+ MANAGER_TIMESTAMP_FIRMWARE
,
800 m
->timestamps
+ MANAGER_TIMESTAMP_LOADER
);
803 /* Prepare log fields we can use for structured logging */
804 if (MANAGER_IS_SYSTEM(m
)) {
805 m
->unit_log_field
= "UNIT=";
806 m
->unit_log_format_string
= "UNIT=%s";
808 m
->invocation_log_field
= "INVOCATION_ID=";
809 m
->invocation_log_format_string
= "INVOCATION_ID=%s";
811 m
->unit_log_field
= "USER_UNIT=";
812 m
->unit_log_format_string
= "USER_UNIT=%s";
814 m
->invocation_log_field
= "USER_INVOCATION_ID=";
815 m
->invocation_log_format_string
= "USER_INVOCATION_ID=%s";
818 /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
819 m
->ctrl_alt_del_ratelimit
= (RateLimit
) { .interval
= 2 * USEC_PER_SEC
, .burst
= 7 };
821 r
= manager_default_environment(m
);
825 r
= hashmap_ensure_allocated(&m
->units
, &string_hash_ops
);
829 r
= hashmap_ensure_allocated(&m
->jobs
, NULL
);
833 r
= hashmap_ensure_allocated(&m
->cgroup_unit
, &path_hash_ops
);
837 r
= hashmap_ensure_allocated(&m
->watch_bus
, &string_hash_ops
);
841 r
= prioq_ensure_allocated(&m
->run_queue
, compare_job_priority
);
845 r
= manager_setup_prefix(m
);
849 r
= sd_event_default(&m
->event
);
853 r
= manager_setup_run_queue(m
);
857 if (test_run_flags
== MANAGER_TEST_RUN_MINIMAL
) {
858 m
->cgroup_root
= strdup("");
862 r
= manager_setup_signals(m
);
866 r
= manager_setup_cgroup(m
);
870 r
= manager_setup_time_change(m
);
874 r
= manager_read_timezone_stat(m
);
878 (void) manager_setup_timezone_change(m
);
880 r
= manager_setup_sigchld_event_source(m
);
885 if (MANAGER_IS_SYSTEM(m
) && test_run_flags
== 0) {
886 r
= mkdir_label("/run/systemd/units", 0755);
887 if (r
< 0 && r
!= -EEXIST
)
893 dir_is_empty("/usr") > 0;
895 /* Note that we do not set up the notify fd here. We do that after deserialization,
896 * since they might have gotten serialized across the reexec. */
903 static int manager_setup_notify(Manager
*m
) {
906 if (MANAGER_IS_TEST_RUN(m
))
909 if (m
->notify_fd
< 0) {
910 _cleanup_close_
int fd
= -1;
911 union sockaddr_union sa
= {};
914 /* First free all secondary fields */
915 m
->notify_socket
= mfree(m
->notify_socket
);
916 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
918 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
920 return log_error_errno(errno
, "Failed to allocate notification socket: %m");
922 fd_inc_rcvbuf(fd
, NOTIFY_RCVBUF_SIZE
);
924 m
->notify_socket
= path_join(m
->prefix
[EXEC_DIRECTORY_RUNTIME
], "systemd/notify");
925 if (!m
->notify_socket
)
928 salen
= sockaddr_un_set_path(&sa
.un
, m
->notify_socket
);
930 return log_error_errno(salen
, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", m
->notify_socket
);
932 (void) mkdir_parents_label(m
->notify_socket
, 0755);
933 (void) sockaddr_un_unlink(&sa
.un
);
935 r
= bind(fd
, &sa
.sa
, salen
);
937 return log_error_errno(errno
, "bind(%s) failed: %m", m
->notify_socket
);
939 r
= setsockopt_int(fd
, SOL_SOCKET
, SO_PASSCRED
, true);
941 return log_error_errno(r
, "SO_PASSCRED failed: %m");
943 m
->notify_fd
= TAKE_FD(fd
);
945 log_debug("Using notification socket %s", m
->notify_socket
);
948 if (!m
->notify_event_source
) {
949 r
= sd_event_add_io(m
->event
, &m
->notify_event_source
, m
->notify_fd
, EPOLLIN
, manager_dispatch_notify_fd
, m
);
951 return log_error_errno(r
, "Failed to allocate notify event source: %m");
953 /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which
954 * service an exit message belongs. */
955 r
= sd_event_source_set_priority(m
->notify_event_source
, SD_EVENT_PRIORITY_NORMAL
-8);
957 return log_error_errno(r
, "Failed to set priority of notify event source: %m");
959 (void) sd_event_source_set_description(m
->notify_event_source
, "manager-notify");
965 static int manager_setup_cgroups_agent(Manager
*m
) {
967 static const union sockaddr_union sa
= {
968 .un
.sun_family
= AF_UNIX
,
969 .un
.sun_path
= "/run/systemd/cgroups-agent",
973 /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering
974 * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and
975 * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on
976 * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number
977 * of D-Bus connections may be queued until the kernel will start dropping further incoming connections,
978 * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX
979 * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and
980 * we thus won't lose messages.
982 * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen
983 * to it. The system instance hence listens on this special socket, but the user instances listen on the system
984 * bus for these messages. */
986 if (MANAGER_IS_TEST_RUN(m
))
989 if (!MANAGER_IS_SYSTEM(m
))
992 r
= cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER
);
994 return log_error_errno(r
, "Failed to determine whether unified cgroups hierarchy is used: %m");
995 if (r
> 0) /* We don't need this anymore on the unified hierarchy */
998 if (m
->cgroups_agent_fd
< 0) {
999 _cleanup_close_
int fd
= -1;
1001 /* First free all secondary fields */
1002 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
1004 fd
= socket(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
1006 return log_error_errno(errno
, "Failed to allocate cgroups agent socket: %m");
1008 fd_inc_rcvbuf(fd
, CGROUPS_AGENT_RCVBUF_SIZE
);
1010 (void) sockaddr_un_unlink(&sa
.un
);
1012 /* Only allow root to connect to this socket */
1013 RUN_WITH_UMASK(0077)
1014 r
= bind(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
));
1016 return log_error_errno(errno
, "bind(%s) failed: %m", sa
.un
.sun_path
);
1018 m
->cgroups_agent_fd
= TAKE_FD(fd
);
1021 if (!m
->cgroups_agent_event_source
) {
1022 r
= sd_event_add_io(m
->event
, &m
->cgroups_agent_event_source
, m
->cgroups_agent_fd
, EPOLLIN
, manager_dispatch_cgroups_agent_fd
, m
);
1024 return log_error_errno(r
, "Failed to allocate cgroups agent event source: %m");
1026 /* Process cgroups notifications early. Note that when the agent notification is received
1027 * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than
1028 * that. Also see handling of cgroup inotify for the unified cgroup stuff. */
1029 r
= sd_event_source_set_priority(m
->cgroups_agent_event_source
, SD_EVENT_PRIORITY_NORMAL
-9);
1031 return log_error_errno(r
, "Failed to set priority of cgroups agent event source: %m");
1033 (void) sd_event_source_set_description(m
->cgroups_agent_event_source
, "manager-cgroups-agent");
1039 static int manager_setup_user_lookup_fd(Manager
*m
) {
1044 /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID
1045 * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation,
1046 * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked
1047 * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects
1048 * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes,
1049 * hence we establish this communication channel so that forked off processes can pass their UID/GID
1050 * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple
1051 * datagram, along with their unit name, so that we can share one communication socket pair among all units for
1054 * You might wonder why we need a communication channel for this that is independent of the usual notification
1055 * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET
1056 * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user
1057 * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available.
1059 * Note that this function is called under two circumstances: when we first initialize (in which case we
1060 * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload
1061 * (in which case the socket pair already exists but we still need to allocate the event source for it). */
1063 if (m
->user_lookup_fds
[0] < 0) {
1065 /* Free all secondary fields */
1066 safe_close_pair(m
->user_lookup_fds
);
1067 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
1069 if (socketpair(AF_UNIX
, SOCK_DGRAM
|SOCK_CLOEXEC
, 0, m
->user_lookup_fds
) < 0)
1070 return log_error_errno(errno
, "Failed to allocate user lookup socket: %m");
1072 (void) fd_inc_rcvbuf(m
->user_lookup_fds
[0], NOTIFY_RCVBUF_SIZE
);
1075 if (!m
->user_lookup_event_source
) {
1076 r
= sd_event_add_io(m
->event
, &m
->user_lookup_event_source
, m
->user_lookup_fds
[0], EPOLLIN
, manager_dispatch_user_lookup_fd
, m
);
1078 return log_error_errno(errno
, "Failed to allocate user lookup event source: %m");
1080 /* Process even earlier than the notify event source, so that we always know first about valid UID/GID
1082 r
= sd_event_source_set_priority(m
->user_lookup_event_source
, SD_EVENT_PRIORITY_NORMAL
-11);
1084 return log_error_errno(errno
, "Failed to set priority of user lookup event source: %m");
1086 (void) sd_event_source_set_description(m
->user_lookup_event_source
, "user-lookup");
1092 static unsigned manager_dispatch_cleanup_queue(Manager
*m
) {
1098 while ((u
= m
->cleanup_queue
)) {
1099 assert(u
->in_cleanup_queue
);
1109 GC_OFFSET_IN_PATH
, /* This one is on the path we were traveling */
1110 GC_OFFSET_UNSURE
, /* No clue */
1111 GC_OFFSET_GOOD
, /* We still need this unit */
1112 GC_OFFSET_BAD
, /* We don't need this unit anymore */
1116 static void unit_gc_mark_good(Unit
*u
, unsigned gc_marker
) {
1121 u
->gc_marker
= gc_marker
+ GC_OFFSET_GOOD
;
1123 /* Recursively mark referenced units as GOOD as well */
1124 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCES
], i
)
1125 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_UNSURE
)
1126 unit_gc_mark_good(other
, gc_marker
);
1129 static void unit_gc_sweep(Unit
*u
, unsigned gc_marker
) {
1137 if (IN_SET(u
->gc_marker
- gc_marker
,
1138 GC_OFFSET_GOOD
, GC_OFFSET_BAD
, GC_OFFSET_UNSURE
, GC_OFFSET_IN_PATH
))
1141 if (u
->in_cleanup_queue
)
1144 if (!unit_may_gc(u
))
1147 u
->gc_marker
= gc_marker
+ GC_OFFSET_IN_PATH
;
1151 HASHMAP_FOREACH_KEY(v
, other
, u
->dependencies
[UNIT_REFERENCED_BY
], i
) {
1152 unit_gc_sweep(other
, gc_marker
);
1154 if (other
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1157 if (other
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1161 if (u
->refs_by_target
) {
1164 LIST_FOREACH(refs_by_target
, ref
, u
->refs_by_target
) {
1165 unit_gc_sweep(ref
->source
, gc_marker
);
1167 if (ref
->source
->gc_marker
== gc_marker
+ GC_OFFSET_GOOD
)
1170 if (ref
->source
->gc_marker
!= gc_marker
+ GC_OFFSET_BAD
)
1178 /* We were unable to find anything out about this entry, so
1179 * let's investigate it later */
1180 u
->gc_marker
= gc_marker
+ GC_OFFSET_UNSURE
;
1181 unit_add_to_gc_queue(u
);
1185 /* We definitely know that this one is not useful anymore, so
1186 * let's mark it for deletion */
1187 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1188 unit_add_to_cleanup_queue(u
);
1192 unit_gc_mark_good(u
, gc_marker
);
1195 static unsigned manager_dispatch_gc_unit_queue(Manager
*m
) {
1196 unsigned n
= 0, gc_marker
;
1201 /* log_debug("Running GC..."); */
1203 m
->gc_marker
+= _GC_OFFSET_MAX
;
1204 if (m
->gc_marker
+ _GC_OFFSET_MAX
<= _GC_OFFSET_MAX
)
1207 gc_marker
= m
->gc_marker
;
1209 while ((u
= m
->gc_unit_queue
)) {
1210 assert(u
->in_gc_queue
);
1212 unit_gc_sweep(u
, gc_marker
);
1214 LIST_REMOVE(gc_queue
, m
->gc_unit_queue
, u
);
1215 u
->in_gc_queue
= false;
1219 if (IN_SET(u
->gc_marker
- gc_marker
,
1220 GC_OFFSET_BAD
, GC_OFFSET_UNSURE
)) {
1222 log_unit_debug(u
, "Collecting.");
1223 u
->gc_marker
= gc_marker
+ GC_OFFSET_BAD
;
1224 unit_add_to_cleanup_queue(u
);
1231 static unsigned manager_dispatch_gc_job_queue(Manager
*m
) {
1237 while ((j
= m
->gc_job_queue
)) {
1238 assert(j
->in_gc_queue
);
1240 LIST_REMOVE(gc_queue
, m
->gc_job_queue
, j
);
1241 j
->in_gc_queue
= false;
1248 log_unit_debug(j
->unit
, "Collecting job.");
1249 (void) job_finish_and_invalidate(j
, JOB_COLLECTED
, false, false);
1255 static unsigned manager_dispatch_stop_when_unneeded_queue(Manager
*m
) {
1262 while ((u
= m
->stop_when_unneeded_queue
)) {
1263 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1264 assert(m
->stop_when_unneeded_queue
);
1266 assert(u
->in_stop_when_unneeded_queue
);
1267 LIST_REMOVE(stop_when_unneeded_queue
, m
->stop_when_unneeded_queue
, u
);
1268 u
->in_stop_when_unneeded_queue
= false;
1272 if (!unit_is_unneeded(u
))
1275 log_unit_debug(u
, "Unit is not needed anymore.");
1277 /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the
1278 * service being unnecessary after a while. */
1280 if (!ratelimit_below(&u
->auto_stop_ratelimit
)) {
1281 log_unit_warning(u
, "Unit not needed anymore, but not stopping since we tried this too often recently.");
1285 /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
1286 r
= manager_add_job(u
->manager
, JOB_STOP
, u
, JOB_FAIL
, NULL
, &error
, NULL
);
1288 log_unit_warning_errno(u
, r
, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error
, r
));
1294 static void manager_clear_jobs_and_units(Manager
*m
) {
1299 while ((u
= hashmap_first(m
->units
)))
1302 manager_dispatch_cleanup_queue(m
);
1304 assert(!m
->load_queue
);
1305 assert(prioq_isempty(m
->run_queue
));
1306 assert(!m
->dbus_unit_queue
);
1307 assert(!m
->dbus_job_queue
);
1308 assert(!m
->cleanup_queue
);
1309 assert(!m
->gc_unit_queue
);
1310 assert(!m
->gc_job_queue
);
1311 assert(!m
->stop_when_unneeded_queue
);
1313 assert(hashmap_isempty(m
->jobs
));
1314 assert(hashmap_isempty(m
->units
));
1316 m
->n_on_console
= 0;
1317 m
->n_running_jobs
= 0;
1318 m
->n_installed_jobs
= 0;
1319 m
->n_failed_jobs
= 0;
1322 Manager
* manager_free(Manager
*m
) {
1323 ExecDirectoryType dt
;
1329 manager_clear_jobs_and_units(m
);
1331 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++)
1332 if (unit_vtable
[c
]->shutdown
)
1333 unit_vtable
[c
]->shutdown(m
);
1335 /* Keep the cgroup hierarchy in place except when we know we are going down for good */
1336 manager_shutdown_cgroup(m
, IN_SET(m
->objective
, MANAGER_EXIT
, MANAGER_REBOOT
, MANAGER_POWEROFF
, MANAGER_HALT
, MANAGER_KEXEC
));
1338 lookup_paths_flush_generator(&m
->lookup_paths
);
1342 exec_runtime_vacuum(m
);
1343 hashmap_free(m
->exec_runtime_by_id
);
1345 dynamic_user_vacuum(m
, false);
1346 hashmap_free(m
->dynamic_users
);
1348 hashmap_free(m
->units
);
1349 hashmap_free(m
->units_by_invocation_id
);
1350 hashmap_free(m
->jobs
);
1351 hashmap_free(m
->watch_pids
);
1352 hashmap_free(m
->watch_bus
);
1354 prioq_free(m
->run_queue
);
1356 set_free(m
->startup_units
);
1357 set_free(m
->failed_units
);
1359 sd_event_source_unref(m
->signal_event_source
);
1360 sd_event_source_unref(m
->sigchld_event_source
);
1361 sd_event_source_unref(m
->notify_event_source
);
1362 sd_event_source_unref(m
->cgroups_agent_event_source
);
1363 sd_event_source_unref(m
->time_change_event_source
);
1364 sd_event_source_unref(m
->timezone_change_event_source
);
1365 sd_event_source_unref(m
->jobs_in_progress_event_source
);
1366 sd_event_source_unref(m
->run_queue_event_source
);
1367 sd_event_source_unref(m
->user_lookup_event_source
);
1368 sd_event_source_unref(m
->sync_bus_names_event_source
);
1370 safe_close(m
->signal_fd
);
1371 safe_close(m
->notify_fd
);
1372 safe_close(m
->cgroups_agent_fd
);
1373 safe_close(m
->time_change_fd
);
1374 safe_close_pair(m
->user_lookup_fds
);
1376 manager_close_ask_password(m
);
1378 manager_close_idle_pipe(m
);
1380 sd_event_unref(m
->event
);
1382 free(m
->notify_socket
);
1384 lookup_paths_free(&m
->lookup_paths
);
1385 strv_free(m
->transient_environment
);
1386 strv_free(m
->client_environment
);
1388 hashmap_free(m
->cgroup_unit
);
1389 manager_free_unit_name_maps(m
);
1391 free(m
->switch_root
);
1392 free(m
->switch_root_init
);
1394 rlimit_free_all(m
->rlimit
);
1396 assert(hashmap_isempty(m
->units_requiring_mounts_for
));
1397 hashmap_free(m
->units_requiring_mounts_for
);
1399 hashmap_free(m
->uid_refs
);
1400 hashmap_free(m
->gid_refs
);
1402 for (dt
= 0; dt
< _EXEC_DIRECTORY_TYPE_MAX
; dt
++)
1403 m
->prefix
[dt
] = mfree(m
->prefix
[dt
]);
1408 static void manager_enumerate_perpetual(Manager
*m
) {
1413 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1416 /* Let's ask every type to load all units from disk/kernel that it might know */
1417 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1418 if (!unit_type_supported(c
)) {
1419 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1423 if (unit_vtable
[c
]->enumerate_perpetual
)
1424 unit_vtable
[c
]->enumerate_perpetual(m
);
1428 static void manager_enumerate(Manager
*m
) {
1433 if (m
->test_run_flags
== MANAGER_TEST_RUN_MINIMAL
)
1436 /* Let's ask every type to load all units from disk/kernel that it might know */
1437 for (c
= 0; c
< _UNIT_TYPE_MAX
; c
++) {
1438 if (!unit_type_supported(c
)) {
1439 log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c
));
1443 if (unit_vtable
[c
]->enumerate
)
1444 unit_vtable
[c
]->enumerate(m
);
1447 manager_dispatch_load_queue(m
);
1450 static void manager_coldplug(Manager
*m
) {
1458 log_debug("Invoking unit coldplug() handlers…");
1460 /* Let's place the units back into their deserialized state */
1461 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1463 /* ignore aliases */
1467 r
= unit_coldplug(u
);
1469 log_warning_errno(r
, "We couldn't coldplug %s, proceeding anyway: %m", u
->id
);
1473 static void manager_catchup(Manager
*m
) {
1480 log_debug("Invoking unit catchup() handlers…");
1482 /* Let's catch up on any state changes that happened while we were reloading/reexecing */
1483 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
1485 /* ignore aliases */
1493 static void manager_distribute_fds(Manager
*m
, FDSet
*fds
) {
1499 HASHMAP_FOREACH(u
, m
->units
, i
) {
1501 if (fdset_size(fds
) <= 0)
1504 if (!UNIT_VTABLE(u
)->distribute_fds
)
1507 UNIT_VTABLE(u
)->distribute_fds(u
, fds
);
1511 static bool manager_dbus_is_running(Manager
*m
, bool deserialized
) {
1516 /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket
1517 * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit
1518 * rather than the current one. */
1520 if (MANAGER_IS_TEST_RUN(m
))
1523 u
= manager_get_unit(m
, SPECIAL_DBUS_SOCKET
);
1526 if ((deserialized
? SOCKET(u
)->deserialized_state
: SOCKET(u
)->state
) != SOCKET_RUNNING
)
1529 u
= manager_get_unit(m
, SPECIAL_DBUS_SERVICE
);
1532 if (!IN_SET((deserialized
? SERVICE(u
)->deserialized_state
: SERVICE(u
)->state
), SERVICE_RUNNING
, SERVICE_RELOAD
))
1538 static void manager_setup_bus(Manager
*m
) {
1541 /* Let's set up our private bus connection now, unconditionally */
1542 (void) bus_init_private(m
);
1544 /* If we are in --user mode also connect to the system bus now */
1545 if (MANAGER_IS_USER(m
))
1546 (void) bus_init_system(m
);
1548 /* Let's connect to the bus now, but only if the unit is supposed to be up */
1549 if (manager_dbus_is_running(m
, MANAGER_IS_RELOADING(m
))) {
1550 (void) bus_init_api(m
);
1552 if (MANAGER_IS_SYSTEM(m
))
1553 (void) bus_init_system(m
);
1557 static void manager_preset_all(Manager
*m
) {
1562 if (m
->first_boot
<= 0)
1565 if (!MANAGER_IS_SYSTEM(m
))
1568 if (MANAGER_IS_TEST_RUN(m
))
1571 /* If this is the first boot, and we are in the host system, then preset everything */
1572 r
= unit_file_preset_all(UNIT_FILE_SYSTEM
, 0, NULL
, UNIT_FILE_PRESET_ENABLE_ONLY
, NULL
, 0);
1574 log_full_errno(r
== -EEXIST
? LOG_NOTICE
: LOG_WARNING
, r
,
1575 "Failed to populate /etc with preset unit settings, ignoring: %m");
1577 log_info("Populated /etc with preset unit settings.");
1580 static void manager_vacuum(Manager
*m
) {
1583 /* Release any dynamic users no longer referenced */
1584 dynamic_user_vacuum(m
, true);
1586 /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */
1587 manager_vacuum_uid_refs(m
);
1588 manager_vacuum_gid_refs(m
);
1590 /* Release any runtimes no longer referenced */
1591 exec_runtime_vacuum(m
);
1594 static void manager_ready(Manager
*m
) {
1597 /* After having loaded everything, do the final round of catching up with what might have changed */
1599 m
->objective
= MANAGER_OK
; /* Tell everyone we are up now */
1601 /* It might be safe to log to the journal now and connect to dbus */
1602 manager_recheck_journal(m
);
1603 manager_recheck_dbus(m
);
1605 /* Sync current state of bus names with our set of listening units */
1606 (void) manager_enqueue_sync_bus_names(m
);
1608 /* Let's finally catch up with any changes that took place while we were reloading/reexecing */
1611 m
->honor_device_enumeration
= true;
1614 static Manager
* manager_reloading_start(Manager
*m
) {
1618 static void manager_reloading_stopp(Manager
**m
) {
1620 assert((*m
)->n_reloading
> 0);
1621 (*m
)->n_reloading
--;
1625 int manager_startup(Manager
*m
, FILE *serialization
, FDSet
*fds
) {
1630 /* If we are running in test mode, we still want to run the generators,
1631 * but we should not touch the real generator directories. */
1632 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
,
1633 MANAGER_IS_TEST_RUN(m
) ? LOOKUP_PATHS_TEMPORARY_GENERATED
: 0,
1636 return log_error_errno(r
, "Failed to initialize path lookup table: %m");
1638 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START
));
1639 r
= manager_run_environment_generators(m
);
1641 r
= manager_run_generators(m
);
1642 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH
));
1646 manager_preset_all(m
);
1648 lookup_paths_log(&m
->lookup_paths
);
1651 /* This block is (optionally) done with the reloading counter bumped */
1652 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
1654 /* If we will deserialize make sure that during enumeration this is already known, so we increase the
1655 * counter here already */
1657 reloading
= manager_reloading_start(m
);
1659 /* First, enumerate what we can from all config files */
1660 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START
));
1661 manager_enumerate_perpetual(m
);
1662 manager_enumerate(m
);
1663 dual_timestamp_get(m
->timestamps
+ manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
));
1665 /* Second, deserialize if there is something to deserialize */
1666 if (serialization
) {
1667 r
= manager_deserialize(m
, serialization
, fds
);
1669 return log_error_errno(r
, "Deserialization failed: %m");
1672 /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass
1673 * some file descriptors to us pre-initialized. This enables socket-based activation of entire
1675 manager_distribute_fds(m
, fds
);
1677 /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */
1678 r
= manager_setup_notify(m
);
1680 /* No sense to continue without notifications, our children would fail anyway. */
1683 r
= manager_setup_cgroups_agent(m
);
1685 /* Likewise, no sense to continue without empty cgroup notifications. */
1688 r
= manager_setup_user_lookup_fd(m
);
1690 /* This shouldn't fail, except if things are really broken. */
1693 /* Connect to the bus if we are good for it */
1694 manager_setup_bus(m
);
1696 /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */
1697 r
= bus_track_coldplug(m
, &m
->subscribed
, false, m
->deserialized_subscribed
);
1699 log_warning_errno(r
, "Failed to deserialized tracked clients, ignoring: %m");
1700 m
->deserialized_subscribed
= strv_free(m
->deserialized_subscribed
);
1702 /* Third, fire things up! */
1703 manager_coldplug(m
);
1705 /* Clean up runtime objects */
1709 /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the
1710 * reload is finished */
1711 m
->send_reloading_done
= true;
1719 int manager_add_job(
1725 sd_bus_error
*error
,
1732 assert(type
< _JOB_TYPE_MAX
);
1734 assert(mode
< _JOB_MODE_MAX
);
1736 if (mode
== JOB_ISOLATE
&& type
!= JOB_START
)
1737 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Isolate is only valid for start.");
1739 if (mode
== JOB_ISOLATE
&& !unit
->allow_isolate
)
1740 return sd_bus_error_setf(error
, BUS_ERROR_NO_ISOLATION
, "Operation refused, unit may not be isolated.");
1742 log_unit_debug(unit
, "Trying to enqueue job %s/%s/%s", unit
->id
, job_type_to_string(type
), job_mode_to_string(mode
));
1744 type
= job_type_collapse(type
, unit
);
1746 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1750 r
= transaction_add_job_and_dependencies(tr
, type
, unit
, NULL
, true, false,
1751 IN_SET(mode
, JOB_IGNORE_DEPENDENCIES
, JOB_IGNORE_REQUIREMENTS
),
1752 mode
== JOB_IGNORE_DEPENDENCIES
, error
);
1756 if (mode
== JOB_ISOLATE
) {
1757 r
= transaction_add_isolate_jobs(tr
, m
);
1762 r
= transaction_activate(tr
, m
, mode
, affected_jobs
, error
);
1766 log_unit_debug(unit
,
1767 "Enqueued job %s/%s as %u", unit
->id
,
1768 job_type_to_string(type
), (unsigned) tr
->anchor_job
->id
);
1771 *ret
= tr
->anchor_job
;
1773 transaction_free(tr
);
1777 transaction_abort(tr
);
1778 transaction_free(tr
);
1782 int manager_add_job_by_name(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, sd_bus_error
*e
, Job
**ret
) {
1783 Unit
*unit
= NULL
; /* just to appease gcc, initialization is not really necessary */
1787 assert(type
< _JOB_TYPE_MAX
);
1789 assert(mode
< _JOB_MODE_MAX
);
1791 r
= manager_load_unit(m
, name
, NULL
, NULL
, &unit
);
1796 return manager_add_job(m
, type
, unit
, mode
, affected_jobs
, e
, ret
);
1799 int manager_add_job_by_name_and_warn(Manager
*m
, JobType type
, const char *name
, JobMode mode
, Set
*affected_jobs
, Job
**ret
) {
1800 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1804 assert(type
< _JOB_TYPE_MAX
);
1806 assert(mode
< _JOB_MODE_MAX
);
1808 r
= manager_add_job_by_name(m
, type
, name
, mode
, affected_jobs
, &error
, ret
);
1810 return log_warning_errno(r
, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode
), name
, bus_error_message(&error
, r
));
1815 int manager_propagate_reload(Manager
*m
, Unit
*unit
, JobMode mode
, sd_bus_error
*e
) {
1821 assert(mode
< _JOB_MODE_MAX
);
1822 assert(mode
!= JOB_ISOLATE
); /* Isolate is only valid for start */
1824 tr
= transaction_new(mode
== JOB_REPLACE_IRREVERSIBLY
);
1828 /* We need an anchor job */
1829 r
= transaction_add_job_and_dependencies(tr
, JOB_NOP
, unit
, NULL
, false, false, true, true, e
);
1833 /* Failure in adding individual dependencies is ignored, so this always succeeds. */
1834 transaction_add_propagate_reload_jobs(tr
, unit
, tr
->anchor_job
, mode
== JOB_IGNORE_DEPENDENCIES
, e
);
1836 r
= transaction_activate(tr
, m
, mode
, NULL
, e
);
1840 transaction_free(tr
);
1844 transaction_abort(tr
);
1845 transaction_free(tr
);
1849 Job
*manager_get_job(Manager
*m
, uint32_t id
) {
1852 return hashmap_get(m
->jobs
, UINT32_TO_PTR(id
));
1855 Unit
*manager_get_unit(Manager
*m
, const char *name
) {
1859 return hashmap_get(m
->units
, name
);
1862 static int manager_dispatch_target_deps_queue(Manager
*m
) {
1867 static const UnitDependency deps
[] = {
1876 while ((u
= m
->target_deps_queue
)) {
1877 assert(u
->in_target_deps_queue
);
1879 LIST_REMOVE(target_deps_queue
, u
->manager
->target_deps_queue
, u
);
1880 u
->in_target_deps_queue
= false;
1882 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
1887 HASHMAP_FOREACH_KEY(v
, target
, u
->dependencies
[deps
[k
]], i
) {
1888 r
= unit_add_default_target_dependency(u
, target
);
1898 unsigned manager_dispatch_load_queue(Manager
*m
) {
1904 /* Make sure we are not run recursively */
1905 if (m
->dispatching_load_queue
)
1908 m
->dispatching_load_queue
= true;
1910 /* Dispatches the load queue. Takes a unit from the queue and
1911 * tries to load its data until the queue is empty */
1913 while ((u
= m
->load_queue
)) {
1914 assert(u
->in_load_queue
);
1920 m
->dispatching_load_queue
= false;
1922 /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about
1923 * should be loaded and have aliases resolved */
1924 (void) manager_dispatch_target_deps_queue(m
);
1929 int manager_load_unit_prepare(
1936 _cleanup_(unit_freep
) Unit
*cleanup_ret
= NULL
;
1942 assert(name
|| path
);
1945 /* This will prepare the unit for loading, but not actually
1946 * load anything from disk. */
1948 if (path
&& !is_path(path
))
1949 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Path %s is not absolute.", path
);
1952 name
= basename(path
);
1954 t
= unit_name_to_type(name
);
1956 if (t
== _UNIT_TYPE_INVALID
|| !unit_name_is_valid(name
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
1957 if (unit_name_is_valid(name
, UNIT_NAME_TEMPLATE
))
1958 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is missing the instance name.", name
);
1960 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
, "Unit name %s is not valid.", name
);
1963 ret
= manager_get_unit(m
, name
);
1969 ret
= cleanup_ret
= unit_new(m
, unit_vtable
[t
]->object_size
);
1974 ret
->fragment_path
= strdup(path
);
1975 if (!ret
->fragment_path
)
1979 r
= unit_add_name(ret
, name
);
1983 unit_add_to_load_queue(ret
);
1984 unit_add_to_dbus_queue(ret
);
1985 unit_add_to_gc_queue(ret
);
1993 int manager_load_unit(
2005 /* This will load the service information files, but not actually
2006 * start any services or anything. */
2008 r
= manager_load_unit_prepare(m
, name
, path
, e
, _ret
);
2012 manager_dispatch_load_queue(m
);
2014 *_ret
= unit_follow_merge(*_ret
);
2018 int manager_load_startable_unit_or_warn(
2024 /* Load a unit, make sure it loaded fully and is not masked. */
2026 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2030 r
= manager_load_unit(m
, name
, path
, &error
, &unit
);
2032 return log_error_errno(r
, "Failed to load %s %s: %s",
2033 name
? "unit" : "unit file", name
?: path
,
2034 bus_error_message(&error
, r
));
2036 r
= bus_unit_validate_load_state(unit
, &error
);
2038 return log_error_errno(r
, "%s", bus_error_message(&error
, r
));
2044 void manager_dump_jobs(Manager
*s
, FILE *f
, const char *prefix
) {
2051 HASHMAP_FOREACH(j
, s
->jobs
, i
)
2052 job_dump(j
, f
, prefix
);
2055 void manager_dump_units(Manager
*s
, FILE *f
, const char *prefix
) {
2063 HASHMAP_FOREACH_KEY(u
, t
, s
->units
, i
)
2065 unit_dump(u
, f
, prefix
);
2068 void manager_dump(Manager
*m
, FILE *f
, const char *prefix
) {
2074 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
2075 const dual_timestamp
*t
= m
->timestamps
+ q
;
2076 char buf
[CONST_MAX(FORMAT_TIMESPAN_MAX
, FORMAT_TIMESTAMP_MAX
)];
2078 if (dual_timestamp_is_set(t
))
2079 fprintf(f
, "%sTimestamp %s: %s\n",
2081 manager_timestamp_to_string(q
),
2082 timestamp_is_set(t
->realtime
) ? format_timestamp(buf
, sizeof buf
, t
->realtime
) :
2083 format_timespan(buf
, sizeof buf
, t
->monotonic
, 1));
2086 manager_dump_units(m
, f
, prefix
);
2087 manager_dump_jobs(m
, f
, prefix
);
2090 int manager_get_dump_string(Manager
*m
, char **ret
) {
2091 _cleanup_free_
char *dump
= NULL
;
2092 _cleanup_fclose_
FILE *f
= NULL
;
2099 f
= open_memstream_unlocked(&dump
, &size
);
2103 manager_dump(m
, f
, NULL
);
2105 r
= fflush_and_check(f
);
2111 *ret
= TAKE_PTR(dump
);
2116 void manager_clear_jobs(Manager
*m
) {
2121 while ((j
= hashmap_first(m
->jobs
)))
2122 /* No need to recurse. We're cancelling all jobs. */
2123 job_finish_and_invalidate(j
, JOB_CANCELED
, false, false);
2126 void manager_unwatch_pid(Manager
*m
, pid_t pid
) {
2129 /* First let's drop the unit keyed as "pid". */
2130 (void) hashmap_remove(m
->watch_pids
, PID_TO_PTR(pid
));
2132 /* Then, let's also drop the array keyed by -pid. */
2133 free(hashmap_remove(m
->watch_pids
, PID_TO_PTR(-pid
)));
2136 static int manager_dispatch_run_queue(sd_event_source
*source
, void *userdata
) {
2137 Manager
*m
= userdata
;
2143 while ((j
= prioq_peek(m
->run_queue
))) {
2144 assert(j
->installed
);
2145 assert(j
->in_run_queue
);
2147 (void) job_run_and_invalidate(j
);
2150 if (m
->n_running_jobs
> 0)
2151 manager_watch_jobs_in_progress(m
);
2153 if (m
->n_on_console
> 0)
2154 manager_watch_idle_pipe(m
);
2159 static unsigned manager_dispatch_dbus_queue(Manager
*m
) {
2160 unsigned n
= 0, budget
;
2166 /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly
2167 * as we can. There's no point in throttling generation of signals in that case. */
2168 if (MANAGER_IS_RELOADING(m
) || m
->send_reloading_done
|| m
->pending_reload_message
)
2169 budget
= (unsigned) -1; /* infinite budget in this case */
2171 /* Anything to do at all? */
2172 if (!m
->dbus_unit_queue
&& !m
->dbus_job_queue
)
2175 /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's
2176 * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */
2177 if (manager_bus_n_queued_write(m
) > MANAGER_BUS_BUSY_THRESHOLD
)
2180 /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't
2181 * overly full before this call we shouldn't increase it in size too wildly in one step, and we
2182 * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of
2183 * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message,
2184 * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to
2185 * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct
2186 * connections it will be counted five times. This difference in counting ("references"
2187 * vs. "instances") is primarily a result of the fact that it's easier to implement it this way,
2188 * however it also reflects the thinking that the "threshold" should put a limit on used queue memory,
2189 * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is
2190 * currently chosen much higher than the "budget". */
2191 budget
= MANAGER_BUS_MESSAGE_BUDGET
;
2194 while (budget
!= 0 && (u
= m
->dbus_unit_queue
)) {
2196 assert(u
->in_dbus_queue
);
2198 bus_unit_send_change_signal(u
);
2201 if (budget
!= (unsigned) -1)
2205 while (budget
!= 0 && (j
= m
->dbus_job_queue
)) {
2206 assert(j
->in_dbus_queue
);
2208 bus_job_send_change_signal(j
);
2211 if (budget
!= (unsigned) -1)
2215 if (m
->send_reloading_done
) {
2216 m
->send_reloading_done
= false;
2217 bus_manager_send_reloading(m
, false);
2221 if (m
->pending_reload_message
) {
2222 bus_send_pending_reload_message(m
);
2229 static int manager_dispatch_cgroups_agent_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2230 Manager
*m
= userdata
;
2234 n
= recv(fd
, buf
, sizeof(buf
), 0);
2236 return log_error_errno(errno
, "Failed to read cgroups agent message: %m");
2238 log_error("Got zero-length cgroups agent message, ignoring.");
2241 if ((size_t) n
>= sizeof(buf
)) {
2242 log_error("Got overly long cgroups agent message, ignoring.");
2246 if (memchr(buf
, 0, n
)) {
2247 log_error("Got cgroups agent message with embedded NUL byte, ignoring.");
2252 manager_notify_cgroup_empty(m
, buf
);
2253 (void) bus_forward_agent_released(m
, buf
);
2258 static void manager_invoke_notify_message(
2261 const struct ucred
*ucred
,
2270 if (u
->notifygen
== m
->notifygen
) /* Already invoked on this same unit in this same iteration? */
2272 u
->notifygen
= m
->notifygen
;
2274 if (UNIT_VTABLE(u
)->notify_message
) {
2275 _cleanup_strv_free_
char **tags
= NULL
;
2277 tags
= strv_split(buf
, NEWLINE
);
2283 UNIT_VTABLE(u
)->notify_message(u
, ucred
, tags
, fds
);
2285 } else if (DEBUG_LOGGING
) {
2286 _cleanup_free_
char *x
= NULL
, *y
= NULL
;
2288 x
= ellipsize(buf
, 20, 90);
2292 log_unit_debug(u
, "Got notification message \"%s\", ignoring.", strnull(y
));
2296 static int manager_dispatch_notify_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2298 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
2299 Manager
*m
= userdata
;
2300 char buf
[NOTIFY_BUFFER_MAX
+1];
2301 struct iovec iovec
= {
2303 .iov_len
= sizeof(buf
)-1,
2306 struct cmsghdr cmsghdr
;
2307 uint8_t buf
[CMSG_SPACE(sizeof(struct ucred
)) +
2308 CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX
)];
2310 struct msghdr msghdr
= {
2313 .msg_control
= &control
,
2314 .msg_controllen
= sizeof(control
),
2317 struct cmsghdr
*cmsg
;
2318 struct ucred
*ucred
= NULL
;
2319 _cleanup_free_ Unit
**array_copy
= NULL
;
2320 Unit
*u1
, *u2
, **array
;
2321 int r
, *fd_array
= NULL
;
2327 assert(m
->notify_fd
== fd
);
2329 if (revents
!= EPOLLIN
) {
2330 log_warning("Got unexpected poll event for notify fd.");
2334 n
= recvmsg(m
->notify_fd
, &msghdr
, MSG_DONTWAIT
|MSG_CMSG_CLOEXEC
|MSG_TRUNC
);
2336 if (IN_SET(errno
, EAGAIN
, EINTR
))
2337 return 0; /* Spurious wakeup, try again */
2339 /* If this is any other, real error, then let's stop processing this socket. This of course means we
2340 * won't take notification messages anymore, but that's still better than busy looping around this:
2341 * being woken up over and over again but being unable to actually read the message off the socket. */
2342 return log_error_errno(errno
, "Failed to receive notification message: %m");
2345 CMSG_FOREACH(cmsg
, &msghdr
) {
2346 if (cmsg
->cmsg_level
== SOL_SOCKET
&& cmsg
->cmsg_type
== SCM_RIGHTS
) {
2348 fd_array
= (int*) CMSG_DATA(cmsg
);
2349 n_fds
= (cmsg
->cmsg_len
- CMSG_LEN(0)) / sizeof(int);
2351 } else if (cmsg
->cmsg_level
== SOL_SOCKET
&&
2352 cmsg
->cmsg_type
== SCM_CREDENTIALS
&&
2353 cmsg
->cmsg_len
== CMSG_LEN(sizeof(struct ucred
))) {
2355 ucred
= (struct ucred
*) CMSG_DATA(cmsg
);
2362 r
= fdset_new_array(&fds
, fd_array
, n_fds
);
2364 close_many(fd_array
, n_fds
);
2370 if (!ucred
|| !pid_is_valid(ucred
->pid
)) {
2371 log_warning("Received notify message without valid credentials. Ignoring.");
2375 if ((size_t) n
>= sizeof(buf
) || (msghdr
.msg_flags
& MSG_TRUNC
)) {
2376 log_warning("Received notify message exceeded maximum size. Ignoring.");
2380 /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one
2381 * trailing NUL byte in the message, but don't expect it. */
2382 if (n
> 1 && memchr(buf
, 0, n
-1)) {
2383 log_warning("Received notify message with embedded NUL bytes. Ignoring.");
2387 /* Make sure it's NUL-terminated. */
2390 /* Increase the generation counter used for filtering out duplicate unit invocations. */
2393 /* Notify every unit that might be interested, which might be multiple. */
2394 u1
= manager_get_unit_by_pid_cgroup(m
, ucred
->pid
);
2395 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(ucred
->pid
));
2396 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-ucred
->pid
));
2403 array_copy
= newdup(Unit
*, array
, k
+1);
2407 /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units
2408 * make sure we only invoke each unit's handler once. */
2410 manager_invoke_notify_message(m
, u1
, ucred
, buf
, fds
);
2414 manager_invoke_notify_message(m
, u2
, ucred
, buf
, fds
);
2418 for (size_t i
= 0; array_copy
[i
]; i
++) {
2419 manager_invoke_notify_message(m
, array_copy
[i
], ucred
, buf
, fds
);
2424 log_warning("Cannot find unit for notify message of PID "PID_FMT
", ignoring.", ucred
->pid
);
2426 if (fdset_size(fds
) > 0)
2427 log_warning("Got extra auxiliary fds with notification message, closing them.");
2432 static void manager_invoke_sigchld_event(
2435 const siginfo_t
*si
) {
2441 /* Already invoked the handler of this unit in this iteration? Then don't process this again */
2442 if (u
->sigchldgen
== m
->sigchldgen
)
2444 u
->sigchldgen
= m
->sigchldgen
;
2446 log_unit_debug(u
, "Child "PID_FMT
" belongs to %s.", si
->si_pid
, u
->id
);
2447 unit_unwatch_pid(u
, si
->si_pid
);
2449 if (UNIT_VTABLE(u
)->sigchld_event
)
2450 UNIT_VTABLE(u
)->sigchld_event(u
, si
->si_pid
, si
->si_code
, si
->si_status
);
2453 static int manager_dispatch_sigchld(sd_event_source
*source
, void *userdata
) {
2454 Manager
*m
= userdata
;
2461 /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it
2462 * while it is a zombie. */
2464 if (waitid(P_ALL
, 0, &si
, WEXITED
|WNOHANG
|WNOWAIT
) < 0) {
2466 if (errno
!= ECHILD
)
2467 log_error_errno(errno
, "Failed to peek for child with waitid(), ignoring: %m");
2475 if (IN_SET(si
.si_code
, CLD_EXITED
, CLD_KILLED
, CLD_DUMPED
)) {
2476 _cleanup_free_ Unit
**array_copy
= NULL
;
2477 _cleanup_free_
char *name
= NULL
;
2478 Unit
*u1
, *u2
, **array
;
2480 (void) get_process_comm(si
.si_pid
, &name
);
2482 log_debug("Child "PID_FMT
" (%s) died (code=%s, status=%i/%s)",
2483 si
.si_pid
, strna(name
),
2484 sigchld_code_to_string(si
.si_code
),
2486 strna(si
.si_code
== CLD_EXITED
2487 ? exit_status_to_string(si
.si_status
, EXIT_STATUS_FULL
)
2488 : signal_to_string(si
.si_status
)));
2490 /* Increase the generation counter used for filtering out duplicate unit invocations */
2493 /* And now figure out the unit this belongs to, it might be multiple... */
2494 u1
= manager_get_unit_by_pid_cgroup(m
, si
.si_pid
);
2495 u2
= hashmap_get(m
->watch_pids
, PID_TO_PTR(si
.si_pid
));
2496 array
= hashmap_get(m
->watch_pids
, PID_TO_PTR(-si
.si_pid
));
2500 /* Count how many entries the array has */
2504 /* Make a copy of the array so that we don't trip up on the array changing beneath us */
2505 array_copy
= newdup(Unit
*, array
, n
+1);
2510 /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but
2511 * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for
2512 * each iteration. */
2514 /* We check for oom condition, in case we got SIGCHLD before the oom notification.
2515 * We only do this for the cgroup the PID belonged to. */
2516 (void) unit_check_oom(u1
);
2518 manager_invoke_sigchld_event(m
, u1
, &si
);
2521 manager_invoke_sigchld_event(m
, u2
, &si
);
2523 for (size_t i
= 0; array_copy
[i
]; i
++)
2524 manager_invoke_sigchld_event(m
, array_copy
[i
], &si
);
2527 /* And now, we actually reap the zombie. */
2528 if (waitid(P_PID
, si
.si_pid
, &si
, WEXITED
) < 0) {
2529 log_error_errno(errno
, "Failed to dequeue child, ignoring: %m");
2536 /* All children processed for now, turn off event source */
2538 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_OFF
);
2540 return log_error_errno(r
, "Failed to disable SIGCHLD event source: %m");
2545 static void manager_start_target(Manager
*m
, const char *name
, JobMode mode
) {
2546 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
2549 log_debug("Activating special unit %s", name
);
2551 r
= manager_add_job_by_name(m
, JOB_START
, name
, mode
, NULL
, &error
, NULL
);
2553 log_error("Failed to enqueue %s job: %s", name
, bus_error_message(&error
, r
));
2556 static void manager_handle_ctrl_alt_del(Manager
*m
) {
2557 /* If the user presses C-A-D more than
2558 * 7 times within 2s, we reboot/shutdown immediately,
2559 * unless it was disabled in system.conf */
2561 if (ratelimit_below(&m
->ctrl_alt_del_ratelimit
) || m
->cad_burst_action
== EMERGENCY_ACTION_NONE
)
2562 manager_start_target(m
, SPECIAL_CTRL_ALT_DEL_TARGET
, JOB_REPLACE_IRREVERSIBLY
);
2564 emergency_action(m
, m
->cad_burst_action
, EMERGENCY_ACTION_WARN
, NULL
, -1,
2565 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
2568 static int manager_dispatch_signal_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2569 Manager
*m
= userdata
;
2571 struct signalfd_siginfo sfsi
;
2575 assert(m
->signal_fd
== fd
);
2577 if (revents
!= EPOLLIN
) {
2578 log_warning("Got unexpected events from signal file descriptor.");
2582 n
= read(m
->signal_fd
, &sfsi
, sizeof(sfsi
));
2583 if (n
!= sizeof(sfsi
)) {
2585 log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n
);
2589 if (IN_SET(errno
, EINTR
, EAGAIN
))
2592 /* We return an error here, which will kill this handler,
2593 * to avoid a busy loop on read error. */
2594 return log_error_errno(errno
, "Reading from signal fd failed: %m");
2597 log_received_signal(sfsi
.ssi_signo
== SIGCHLD
||
2598 (sfsi
.ssi_signo
== SIGTERM
&& MANAGER_IS_USER(m
))
2599 ? LOG_DEBUG
: LOG_INFO
,
2602 switch (sfsi
.ssi_signo
) {
2605 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2607 log_warning_errno(r
, "Failed to enable SIGCHLD event source, ignoring: %m");
2612 if (MANAGER_IS_SYSTEM(m
)) {
2613 /* This is for compatibility with the original sysvinit */
2614 if (verify_run_space_and_log("Refusing to reexecute") < 0)
2617 m
->objective
= MANAGER_REEXECUTE
;
2623 if (MANAGER_IS_SYSTEM(m
))
2624 manager_handle_ctrl_alt_del(m
);
2626 manager_start_target(m
, SPECIAL_EXIT_TARGET
,
2627 JOB_REPLACE_IRREVERSIBLY
);
2631 /* This is a nop on non-init */
2632 if (MANAGER_IS_SYSTEM(m
))
2633 manager_start_target(m
, SPECIAL_KBREQUEST_TARGET
, JOB_REPLACE
);
2638 /* This is a nop on non-init */
2639 if (MANAGER_IS_SYSTEM(m
))
2640 manager_start_target(m
, SPECIAL_SIGPWR_TARGET
, JOB_REPLACE
);
2645 if (manager_dbus_is_running(m
, false)) {
2646 log_info("Trying to reconnect to bus...");
2648 (void) bus_init_api(m
);
2650 if (MANAGER_IS_SYSTEM(m
))
2651 (void) bus_init_system(m
);
2653 log_info("Starting D-Bus service...");
2654 manager_start_target(m
, SPECIAL_DBUS_SERVICE
, JOB_REPLACE
);
2660 _cleanup_free_
char *dump
= NULL
;
2662 r
= manager_get_dump_string(m
, &dump
);
2664 log_warning_errno(errno
, "Failed to acquire manager dump: %m");
2668 log_dump(LOG_INFO
, dump
);
2673 if (verify_run_space_and_log("Refusing to reload") < 0)
2676 m
->objective
= MANAGER_RELOAD
;
2681 /* Starting SIGRTMIN+0 */
2682 static const struct {
2685 } target_table
[] = {
2686 [0] = { SPECIAL_DEFAULT_TARGET
, JOB_ISOLATE
},
2687 [1] = { SPECIAL_RESCUE_TARGET
, JOB_ISOLATE
},
2688 [2] = { SPECIAL_EMERGENCY_TARGET
, JOB_ISOLATE
},
2689 [3] = { SPECIAL_HALT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2690 [4] = { SPECIAL_POWEROFF_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2691 [5] = { SPECIAL_REBOOT_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2692 [6] = { SPECIAL_KEXEC_TARGET
, JOB_REPLACE_IRREVERSIBLY
},
2695 /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
2696 static const ManagerObjective objective_table
[] = {
2698 [1] = MANAGER_POWEROFF
,
2699 [2] = MANAGER_REBOOT
,
2700 [3] = MANAGER_KEXEC
,
2703 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+0 &&
2704 (int) sfsi
.ssi_signo
< SIGRTMIN
+(int) ELEMENTSOF(target_table
)) {
2705 int idx
= (int) sfsi
.ssi_signo
- SIGRTMIN
;
2706 manager_start_target(m
, target_table
[idx
].target
,
2707 target_table
[idx
].mode
);
2711 if ((int) sfsi
.ssi_signo
>= SIGRTMIN
+13 &&
2712 (int) sfsi
.ssi_signo
< SIGRTMIN
+13+(int) ELEMENTSOF(objective_table
)) {
2713 m
->objective
= objective_table
[sfsi
.ssi_signo
- SIGRTMIN
- 13];
2717 switch (sfsi
.ssi_signo
- SIGRTMIN
) {
2720 manager_set_show_status(m
, SHOW_STATUS_YES
);
2724 manager_set_show_status(m
, SHOW_STATUS_NO
);
2728 manager_override_log_level(m
, LOG_DEBUG
);
2732 manager_restore_original_log_level(m
);
2736 if (MANAGER_IS_USER(m
)) {
2737 m
->objective
= MANAGER_EXIT
;
2741 /* This is a nop on init */
2745 case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */
2746 manager_restore_original_log_target(m
);
2750 manager_override_log_target(m
, LOG_TARGET_CONSOLE
);
2754 manager_override_log_target(m
, LOG_TARGET_KMSG
);
2758 log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi
.ssi_signo
));
2765 static int manager_dispatch_time_change_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2766 Manager
*m
= userdata
;
2771 assert(m
->time_change_fd
== fd
);
2773 log_struct(LOG_DEBUG
,
2774 "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR
,
2775 LOG_MESSAGE("Time has been changed"));
2777 /* Restart the watch */
2778 (void) manager_setup_time_change(m
);
2780 HASHMAP_FOREACH(u
, m
->units
, i
)
2781 if (UNIT_VTABLE(u
)->time_change
)
2782 UNIT_VTABLE(u
)->time_change(u
);
2787 static int manager_dispatch_timezone_change(
2788 sd_event_source
*source
,
2789 const struct inotify_event
*e
,
2792 Manager
*m
= userdata
;
2799 log_debug("inotify event for /etc/localtime");
2801 changed
= manager_read_timezone_stat(m
);
2805 /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */
2806 (void) manager_setup_timezone_change(m
);
2808 /* Read the new timezone */
2811 log_debug("Timezone has been changed (now: %s).", tzname
[daylight
]);
2813 HASHMAP_FOREACH(u
, m
->units
, i
)
2814 if (UNIT_VTABLE(u
)->timezone_change
)
2815 UNIT_VTABLE(u
)->timezone_change(u
);
2820 static int manager_dispatch_idle_pipe_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
2821 Manager
*m
= userdata
;
2824 assert(m
->idle_pipe
[2] == fd
);
2826 /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's
2827 * now turn off any further console output if there's at least one service that needs console access, so that
2828 * from now on our own output should not spill into that service's output anymore. After all, we support
2829 * Type=idle only to beautify console output and it generally is set on services that want to own the console
2830 * exclusively without our interference. */
2831 m
->no_console_output
= m
->n_on_console
> 0;
2833 /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer
2834 * by closing the pipes towards them, which is what they are waiting for. */
2835 manager_close_idle_pipe(m
);
2840 static int manager_dispatch_jobs_in_progress(sd_event_source
*source
, usec_t usec
, void *userdata
) {
2841 Manager
*m
= userdata
;
2848 manager_print_jobs_in_progress(m
);
2850 next
= now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_PERIOD_USEC
;
2851 r
= sd_event_source_set_time(source
, next
);
2855 return sd_event_source_set_enabled(source
, SD_EVENT_ONESHOT
);
2858 int manager_loop(Manager
*m
) {
2859 RateLimit rl
= { .interval
= 1*USEC_PER_SEC
, .burst
= 50000 };
2863 assert(m
->objective
== MANAGER_OK
); /* Ensure manager_startup() has been called */
2865 manager_check_finished(m
);
2867 /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */
2868 r
= sd_event_source_set_enabled(m
->sigchld_event_source
, SD_EVENT_ON
);
2870 return log_error_errno(r
, "Failed to enable SIGCHLD event source: %m");
2872 while (m
->objective
== MANAGER_OK
) {
2875 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
))
2878 if (!ratelimit_below(&rl
)) {
2879 /* Yay, something is going seriously wrong, pause a little */
2880 log_warning("Looping too fast. Throttling execution a little.");
2884 if (manager_dispatch_load_queue(m
) > 0)
2887 if (manager_dispatch_gc_job_queue(m
) > 0)
2890 if (manager_dispatch_gc_unit_queue(m
) > 0)
2893 if (manager_dispatch_cleanup_queue(m
) > 0)
2896 if (manager_dispatch_cgroup_realize_queue(m
) > 0)
2899 if (manager_dispatch_stop_when_unneeded_queue(m
) > 0)
2902 if (manager_dispatch_dbus_queue(m
) > 0)
2905 /* Sleep for half the watchdog time */
2906 if (timestamp_is_set(m
->runtime_watchdog
) && MANAGER_IS_SYSTEM(m
)) {
2907 wait_usec
= m
->runtime_watchdog
/ 2;
2911 wait_usec
= USEC_INFINITY
;
2913 r
= sd_event_run(m
->event
, wait_usec
);
2915 return log_error_errno(r
, "Failed to run event loop: %m");
2918 return m
->objective
;
2921 int manager_load_unit_from_dbus_path(Manager
*m
, const char *s
, sd_bus_error
*e
, Unit
**_u
) {
2922 _cleanup_free_
char *n
= NULL
;
2923 sd_id128_t invocation_id
;
2931 r
= unit_name_from_dbus_path(s
, &n
);
2935 /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it
2936 * as invocation ID. */
2937 r
= sd_id128_from_string(n
, &invocation_id
);
2939 u
= hashmap_get(m
->units_by_invocation_id
, &invocation_id
);
2945 return sd_bus_error_setf(e
, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID
,
2946 "No unit with the specified invocation ID " SD_ID128_FORMAT_STR
" known.",
2947 SD_ID128_FORMAT_VAL(invocation_id
));
2950 /* If this didn't work, we check if this is a unit name */
2951 if (!unit_name_is_valid(n
, UNIT_NAME_PLAIN
|UNIT_NAME_INSTANCE
)) {
2952 _cleanup_free_
char *nn
= NULL
;
2955 return sd_bus_error_setf(e
, SD_BUS_ERROR_INVALID_ARGS
,
2956 "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn
));
2959 r
= manager_load_unit(m
, n
, NULL
, e
, &u
);
2967 int manager_get_job_from_dbus_path(Manager
*m
, const char *s
, Job
**_j
) {
2977 p
= startswith(s
, "/org/freedesktop/systemd1/job/");
2981 r
= safe_atou(p
, &id
);
2985 j
= manager_get_job(m
, id
);
2994 void manager_send_unit_audit(Manager
*m
, Unit
*u
, int type
, bool success
) {
2997 _cleanup_free_
char *p
= NULL
;
3001 if (!MANAGER_IS_SYSTEM(m
))
3004 audit_fd
= get_audit_fd();
3008 /* Don't generate audit events if the service was already
3009 * started and we're just deserializing */
3010 if (MANAGER_IS_RELOADING(m
))
3013 if (u
->type
!= UNIT_SERVICE
)
3016 r
= unit_name_to_prefix_and_instance(u
->id
, &p
);
3018 log_error_errno(r
, "Failed to extract prefix and instance of unit name: %m");
3022 msg
= strjoina("unit=", p
);
3023 if (audit_log_user_comm_message(audit_fd
, type
, msg
, "systemd", NULL
, NULL
, NULL
, success
) < 0) {
3025 /* We aren't allowed to send audit messages?
3026 * Then let's not retry again. */
3029 log_warning_errno(errno
, "Failed to send audit message: %m");
3035 void manager_send_unit_plymouth(Manager
*m
, Unit
*u
) {
3036 static const union sockaddr_union sa
= PLYMOUTH_SOCKET
;
3037 _cleanup_free_
char *message
= NULL
;
3038 _cleanup_close_
int fd
= -1;
3041 /* Don't generate plymouth events if the service was already
3042 * started and we're just deserializing */
3043 if (MANAGER_IS_RELOADING(m
))
3046 if (!MANAGER_IS_SYSTEM(m
))
3049 if (detect_container() > 0)
3052 if (!IN_SET(u
->type
, UNIT_SERVICE
, UNIT_MOUNT
, UNIT_SWAP
))
3055 /* We set SOCK_NONBLOCK here so that we rather drop the
3056 * message then wait for plymouth */
3057 fd
= socket(AF_UNIX
, SOCK_STREAM
|SOCK_CLOEXEC
|SOCK_NONBLOCK
, 0);
3059 log_error_errno(errno
, "socket() failed: %m");
3063 if (connect(fd
, &sa
.sa
, SOCKADDR_UN_LEN(sa
.un
)) < 0) {
3064 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3065 log_error_errno(errno
, "connect() failed: %m");
3069 if (asprintf(&message
, "U\002%c%s%n", (int) (strlen(u
->id
) + 1), u
->id
, &n
) < 0) {
3075 if (write(fd
, message
, n
+ 1) != n
+ 1)
3076 if (!IN_SET(errno
, EAGAIN
, ENOENT
) && !ERRNO_IS_DISCONNECT(errno
))
3077 log_error_errno(errno
, "Failed to write Plymouth message: %m");
3080 int manager_open_serialization(Manager
*m
, FILE **_f
) {
3086 fd
= open_serialization_fd("systemd-state");
3090 f
= fdopen(fd
, "w+");
3100 static bool manager_timestamp_shall_serialize(ManagerTimestamp t
) {
3105 /* The following timestamps only apply to the host system, hence only serialize them there */
3107 MANAGER_TIMESTAMP_USERSPACE
, MANAGER_TIMESTAMP_FINISH
,
3108 MANAGER_TIMESTAMP_SECURITY_START
, MANAGER_TIMESTAMP_SECURITY_FINISH
,
3109 MANAGER_TIMESTAMP_GENERATORS_START
, MANAGER_TIMESTAMP_GENERATORS_FINISH
,
3110 MANAGER_TIMESTAMP_UNITS_LOAD_START
, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
);
3113 int manager_serialize(
3117 bool switching_root
) {
3129 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3131 (void) serialize_item_format(f
, "current-job-id", "%" PRIu32
, m
->current_job_id
);
3132 (void) serialize_item_format(f
, "n-installed-jobs", "%u", m
->n_installed_jobs
);
3133 (void) serialize_item_format(f
, "n-failed-jobs", "%u", m
->n_failed_jobs
);
3134 (void) serialize_bool(f
, "taint-usr", m
->taint_usr
);
3135 (void) serialize_bool(f
, "ready-sent", m
->ready_sent
);
3136 (void) serialize_bool(f
, "taint-logged", m
->taint_logged
);
3137 (void) serialize_bool(f
, "service-watchdogs", m
->service_watchdogs
);
3139 /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */
3140 (void) serialize_bool(f
, "honor-device-enumeration", !switching_root
);
3142 t
= show_status_to_string(m
->show_status
);
3144 (void) serialize_item(f
, "show-status", t
);
3146 if (m
->log_level_overridden
)
3147 (void) serialize_item_format(f
, "log-level-override", "%i", log_get_max_level());
3148 if (m
->log_target_overridden
)
3149 (void) serialize_item(f
, "log-target-override", log_target_to_string(log_get_target()));
3151 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3152 _cleanup_free_
char *joined
= NULL
;
3154 if (!manager_timestamp_shall_serialize(q
))
3157 joined
= strjoin(manager_timestamp_to_string(q
), "-timestamp");
3161 (void) serialize_dual_timestamp(f
, joined
, m
->timestamps
+ q
);
3164 if (!switching_root
)
3165 (void) serialize_strv(f
, "env", m
->client_environment
);
3167 if (m
->notify_fd
>= 0) {
3168 r
= serialize_fd(f
, fds
, "notify-fd", m
->notify_fd
);
3172 (void) serialize_item(f
, "notify-socket", m
->notify_socket
);
3175 if (m
->cgroups_agent_fd
>= 0) {
3176 r
= serialize_fd(f
, fds
, "cgroups-agent-fd", m
->cgroups_agent_fd
);
3181 if (m
->user_lookup_fds
[0] >= 0) {
3184 copy0
= fdset_put_dup(fds
, m
->user_lookup_fds
[0]);
3186 return log_error_errno(copy0
, "Failed to add user lookup fd to serialization: %m");
3188 copy1
= fdset_put_dup(fds
, m
->user_lookup_fds
[1]);
3190 return log_error_errno(copy1
, "Failed to add user lookup fd to serialization: %m");
3192 (void) serialize_item_format(f
, "user-lookup", "%i %i", copy0
, copy1
);
3195 bus_track_serialize(m
->subscribed
, f
, "subscribed");
3197 r
= dynamic_user_serialize(m
, f
, fds
);
3201 manager_serialize_uid_refs(m
, f
);
3202 manager_serialize_gid_refs(m
, f
);
3204 r
= exec_runtime_serialize(m
, f
, fds
);
3208 (void) fputc('\n', f
);
3210 HASHMAP_FOREACH_KEY(u
, t
, m
->units
, i
) {
3218 r
= unit_serialize(u
, f
, fds
, !switching_root
);
3223 r
= fflush_and_check(f
);
3225 return log_error_errno(r
, "Failed to flush serialization: %m");
3227 r
= bus_fdset_add_all(m
, fds
);
3229 return log_error_errno(r
, "Failed to add bus sockets to serialization: %m");
3234 static int manager_deserialize_one_unit(Manager
*m
, const char *name
, FILE *f
, FDSet
*fds
) {
3238 r
= manager_load_unit(m
, name
, NULL
, NULL
, &u
);
3242 return log_notice_errno(r
, "Failed to load unit \"%s\", skipping deserialization: %m", name
);
3245 r
= unit_deserialize(u
, f
, fds
);
3249 return log_notice_errno(r
, "Failed to deserialize unit \"%s\", skipping: %m", name
);
3255 static int manager_deserialize_units(Manager
*m
, FILE *f
, FDSet
*fds
) {
3256 const char *unit_name
;
3260 _cleanup_free_
char *line
= NULL
;
3262 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3264 return log_error_errno(r
, "Failed to read serialization line: %m");
3268 unit_name
= strstrip(line
);
3270 r
= manager_deserialize_one_unit(m
, unit_name
, f
, fds
);
3274 r
= unit_deserialize_skip(f
);
3283 int manager_deserialize(Manager
*m
, FILE *f
, FDSet
*fds
) {
3289 log_debug("Deserializing state...");
3291 /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have
3292 * increased it to non-zero, which is why we just increase it by one here and down again at the end of this
3294 _cleanup_(manager_reloading_stopp
) _unused_ Manager
*reloading
= manager_reloading_start(m
);
3297 _cleanup_free_
char *line
= NULL
;
3298 const char *val
, *l
;
3300 r
= read_line(f
, LONG_LINE_MAX
, &line
);
3302 return log_error_errno(r
, "Failed to read serialization line: %m");
3307 if (isempty(l
)) /* end marker */
3310 if ((val
= startswith(l
, "current-job-id="))) {
3313 if (safe_atou32(val
, &id
) < 0)
3314 log_notice("Failed to parse current job id value '%s', ignoring.", val
);
3316 m
->current_job_id
= MAX(m
->current_job_id
, id
);
3318 } else if ((val
= startswith(l
, "n-installed-jobs="))) {
3321 if (safe_atou32(val
, &n
) < 0)
3322 log_notice("Failed to parse installed jobs counter '%s', ignoring.", val
);
3324 m
->n_installed_jobs
+= n
;
3326 } else if ((val
= startswith(l
, "n-failed-jobs="))) {
3329 if (safe_atou32(val
, &n
) < 0)
3330 log_notice("Failed to parse failed jobs counter '%s', ignoring.", val
);
3332 m
->n_failed_jobs
+= n
;
3334 } else if ((val
= startswith(l
, "taint-usr="))) {
3337 b
= parse_boolean(val
);
3339 log_notice("Failed to parse taint /usr flag '%s', ignoring.", val
);
3341 m
->taint_usr
= m
->taint_usr
|| b
;
3343 } else if ((val
= startswith(l
, "ready-sent="))) {
3346 b
= parse_boolean(val
);
3348 log_notice("Failed to parse ready-sent flag '%s', ignoring.", val
);
3350 m
->ready_sent
= m
->ready_sent
|| b
;
3352 } else if ((val
= startswith(l
, "taint-logged="))) {
3355 b
= parse_boolean(val
);
3357 log_notice("Failed to parse taint-logged flag '%s', ignoring.", val
);
3359 m
->taint_logged
= m
->taint_logged
|| b
;
3361 } else if ((val
= startswith(l
, "service-watchdogs="))) {
3364 b
= parse_boolean(val
);
3366 log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val
);
3368 m
->service_watchdogs
= b
;
3370 } else if ((val
= startswith(l
, "honor-device-enumeration="))) {
3373 b
= parse_boolean(val
);
3375 log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val
);
3377 m
->honor_device_enumeration
= b
;
3379 } else if ((val
= startswith(l
, "show-status="))) {
3382 s
= show_status_from_string(val
);
3384 log_notice("Failed to parse show-status flag '%s', ignoring.", val
);
3386 manager_set_show_status(m
, s
);
3388 } else if ((val
= startswith(l
, "log-level-override="))) {
3391 level
= log_level_from_string(val
);
3393 log_notice("Failed to parse log-level-override value '%s', ignoring.", val
);
3395 manager_override_log_level(m
, level
);
3397 } else if ((val
= startswith(l
, "log-target-override="))) {
3400 target
= log_target_from_string(val
);
3402 log_notice("Failed to parse log-target-override value '%s', ignoring.", val
);
3404 manager_override_log_target(m
, target
);
3406 } else if (startswith(l
, "env=")) {
3407 r
= deserialize_environment(l
+ 4, &m
->client_environment
);
3409 log_notice_errno(r
, "Failed to parse environment entry: \"%s\", ignoring: %m", l
);
3411 } else if ((val
= startswith(l
, "notify-fd="))) {
3414 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3415 log_notice("Failed to parse notify fd, ignoring: \"%s\"", val
);
3417 m
->notify_event_source
= sd_event_source_unref(m
->notify_event_source
);
3418 safe_close(m
->notify_fd
);
3419 m
->notify_fd
= fdset_remove(fds
, fd
);
3422 } else if ((val
= startswith(l
, "notify-socket="))) {
3423 r
= free_and_strdup(&m
->notify_socket
, val
);
3427 } else if ((val
= startswith(l
, "cgroups-agent-fd="))) {
3430 if (safe_atoi(val
, &fd
) < 0 || fd
< 0 || !fdset_contains(fds
, fd
))
3431 log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val
);
3433 m
->cgroups_agent_event_source
= sd_event_source_unref(m
->cgroups_agent_event_source
);
3434 safe_close(m
->cgroups_agent_fd
);
3435 m
->cgroups_agent_fd
= fdset_remove(fds
, fd
);
3438 } else if ((val
= startswith(l
, "user-lookup="))) {
3441 if (sscanf(val
, "%i %i", &fd0
, &fd1
) != 2 || fd0
< 0 || fd1
< 0 || fd0
== fd1
|| !fdset_contains(fds
, fd0
) || !fdset_contains(fds
, fd1
))
3442 log_notice("Failed to parse user lookup fd, ignoring: %s", val
);
3444 m
->user_lookup_event_source
= sd_event_source_unref(m
->user_lookup_event_source
);
3445 safe_close_pair(m
->user_lookup_fds
);
3446 m
->user_lookup_fds
[0] = fdset_remove(fds
, fd0
);
3447 m
->user_lookup_fds
[1] = fdset_remove(fds
, fd1
);
3450 } else if ((val
= startswith(l
, "dynamic-user=")))
3451 dynamic_user_deserialize_one(m
, val
, fds
);
3452 else if ((val
= startswith(l
, "destroy-ipc-uid=")))
3453 manager_deserialize_uid_refs_one(m
, val
);
3454 else if ((val
= startswith(l
, "destroy-ipc-gid=")))
3455 manager_deserialize_gid_refs_one(m
, val
);
3456 else if ((val
= startswith(l
, "exec-runtime=")))
3457 exec_runtime_deserialize_one(m
, val
, fds
);
3458 else if ((val
= startswith(l
, "subscribed="))) {
3460 if (strv_extend(&m
->deserialized_subscribed
, val
) < 0)
3466 for (q
= 0; q
< _MANAGER_TIMESTAMP_MAX
; q
++) {
3467 val
= startswith(l
, manager_timestamp_to_string(q
));
3471 val
= startswith(val
, "-timestamp=");
3476 if (q
< _MANAGER_TIMESTAMP_MAX
) /* found it */
3477 (void) deserialize_dual_timestamp(val
, m
->timestamps
+ q
);
3478 else if (!startswith(l
, "kdbus-fd=")) /* ignore kdbus */
3479 log_notice("Unknown serialization item '%s', ignoring.", l
);
3483 return manager_deserialize_units(m
, f
, fds
);
3486 int manager_reload(Manager
*m
) {
3487 _cleanup_(manager_reloading_stopp
) Manager
*reloading
= NULL
;
3488 _cleanup_fdset_free_ FDSet
*fds
= NULL
;
3489 _cleanup_fclose_
FILE *f
= NULL
;
3494 r
= manager_open_serialization(m
, &f
);
3496 return log_error_errno(r
, "Failed to create serialization file: %m");
3502 /* We are officially in reload mode from here on. */
3503 reloading
= manager_reloading_start(m
);
3505 r
= manager_serialize(m
, f
, fds
, false);
3509 if (fseeko(f
, 0, SEEK_SET
) < 0)
3510 return log_error_errno(errno
, "Failed to seek to beginning of serialization: %m");
3512 /* 💀 This is the point of no return, from here on there is no way back. 💀 */
3515 bus_manager_send_reloading(m
, true);
3517 /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users
3518 * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need
3521 manager_clear_jobs_and_units(m
);
3522 lookup_paths_flush_generator(&m
->lookup_paths
);
3523 lookup_paths_free(&m
->lookup_paths
);
3524 exec_runtime_vacuum(m
);
3525 dynamic_user_vacuum(m
, false);
3526 m
->uid_refs
= hashmap_free(m
->uid_refs
);
3527 m
->gid_refs
= hashmap_free(m
->gid_refs
);
3529 r
= lookup_paths_init(&m
->lookup_paths
, m
->unit_file_scope
, 0, NULL
);
3531 log_warning_errno(r
, "Failed to initialize path lookup table, ignoring: %m");
3533 (void) manager_run_environment_generators(m
);
3534 (void) manager_run_generators(m
);
3536 lookup_paths_log(&m
->lookup_paths
);
3538 /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */
3539 manager_free_unit_name_maps(m
);
3541 /* First, enumerate what we can from kernel and suchlike */
3542 manager_enumerate_perpetual(m
);
3543 manager_enumerate(m
);
3545 /* Second, deserialize our stored data */
3546 r
= manager_deserialize(m
, f
, fds
);
3548 log_warning_errno(r
, "Deserialization failed, proceeding anyway: %m");
3550 /* We don't need the serialization anymore */
3553 /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */
3554 (void) manager_setup_notify(m
);
3555 (void) manager_setup_cgroups_agent(m
);
3556 (void) manager_setup_user_lookup_fd(m
);
3558 /* Third, fire things up! */
3559 manager_coldplug(m
);
3561 /* Clean up runtime objects no longer referenced */
3564 /* Consider the reload process complete now. */
3565 assert(m
->n_reloading
> 0);
3568 /* On manager reloading, device tag data should exists, thus, we should honor the results of device
3569 * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So,
3570 * let's always set the flag here for safety. */
3571 m
->honor_device_enumeration
= true;
3575 m
->send_reloading_done
= true;
3579 void manager_reset_failed(Manager
*m
) {
3585 HASHMAP_FOREACH(u
, m
->units
, i
)
3586 unit_reset_failed(u
);
3589 bool manager_unit_inactive_or_pending(Manager
*m
, const char *name
) {
3595 /* Returns true if the unit is inactive or going down */
3596 u
= manager_get_unit(m
, name
);
3600 return unit_inactive_or_pending(u
);
3603 static void log_taint_string(Manager
*m
) {
3604 _cleanup_free_
char *taint
= NULL
;
3608 if (MANAGER_IS_USER(m
) || m
->taint_logged
)
3611 m
->taint_logged
= true; /* only check for taint once */
3613 taint
= manager_taint_string(m
);
3617 log_struct(LOG_NOTICE
,
3618 LOG_MESSAGE("System is tainted: %s", taint
),
3620 "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR
);
3623 static void manager_notify_finished(Manager
*m
) {
3624 char userspace
[FORMAT_TIMESPAN_MAX
], initrd
[FORMAT_TIMESPAN_MAX
], kernel
[FORMAT_TIMESPAN_MAX
], sum
[FORMAT_TIMESPAN_MAX
];
3625 usec_t firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
;
3627 if (MANAGER_IS_TEST_RUN(m
))
3630 if (MANAGER_IS_SYSTEM(m
) && detect_container() <= 0) {
3631 char ts
[FORMAT_TIMESPAN_MAX
];
3632 char buf
[FORMAT_TIMESPAN_MAX
+ STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX
+ STRLEN(" (loader) + ")]
3635 size_t size
= sizeof buf
;
3637 /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and
3638 * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered
3639 * negative values. */
3641 firmware_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
;
3642 loader_usec
= m
->timestamps
[MANAGER_TIMESTAMP_LOADER
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3643 userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3644 total_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FIRMWARE
].monotonic
+ m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
;
3646 if (firmware_usec
> 0)
3647 size
= strpcpyf(&p
, size
, "%s (firmware) + ", format_timespan(ts
, sizeof(ts
), firmware_usec
, USEC_PER_MSEC
));
3648 if (loader_usec
> 0)
3649 size
= strpcpyf(&p
, size
, "%s (loader) + ", format_timespan(ts
, sizeof(ts
), loader_usec
, USEC_PER_MSEC
));
3651 if (dual_timestamp_is_set(&m
->timestamps
[MANAGER_TIMESTAMP_INITRD
])) {
3653 /* The initrd case on bare-metal*/
3654 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3655 initrd_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_INITRD
].monotonic
;
3657 log_struct(LOG_INFO
,
3658 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3659 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3660 "INITRD_USEC="USEC_FMT
, initrd_usec
,
3661 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3662 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.",
3664 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3665 format_timespan(initrd
, sizeof(initrd
), initrd_usec
, USEC_PER_MSEC
),
3666 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3667 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3669 /* The initrd-less case on bare-metal*/
3671 kernel_usec
= m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_KERNEL
].monotonic
;
3674 log_struct(LOG_INFO
,
3675 "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR
,
3676 "KERNEL_USEC="USEC_FMT
, kernel_usec
,
3677 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3678 LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.",
3680 format_timespan(kernel
, sizeof(kernel
), kernel_usec
, USEC_PER_MSEC
),
3681 format_timespan(userspace
, sizeof(userspace
), userspace_usec
, USEC_PER_MSEC
),
3682 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3685 /* The container and --user case */
3686 firmware_usec
= loader_usec
= initrd_usec
= kernel_usec
= 0;
3687 total_usec
= userspace_usec
= m
->timestamps
[MANAGER_TIMESTAMP_FINISH
].monotonic
- m
->timestamps
[MANAGER_TIMESTAMP_USERSPACE
].monotonic
;
3689 log_struct(LOG_INFO
,
3690 "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR
,
3691 "USERSPACE_USEC="USEC_FMT
, userspace_usec
,
3692 LOG_MESSAGE("Startup finished in %s.",
3693 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
)));
3696 bus_manager_send_finished(m
, firmware_usec
, loader_usec
, kernel_usec
, initrd_usec
, userspace_usec
, total_usec
);
3699 m
->ready_sent
? "STATUS=Startup finished in %s."
3701 "STATUS=Startup finished in %s.",
3702 format_timespan(sum
, sizeof(sum
), total_usec
, USEC_PER_MSEC
));
3703 m
->ready_sent
= true;
3705 log_taint_string(m
);
3708 static void manager_send_ready(Manager
*m
) {
3711 /* We send READY=1 on reaching basic.target only when running in --user mode. */
3712 if (!MANAGER_IS_USER(m
) || m
->ready_sent
)
3715 m
->ready_sent
= true;
3719 "STATUS=Reached " SPECIAL_BASIC_TARGET
".");
3722 static void manager_check_basic_target(Manager
*m
) {
3727 /* Small shortcut */
3728 if (m
->ready_sent
&& m
->taint_logged
)
3731 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
3732 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
3735 /* For user managers, send out READY=1 as soon as we reach basic.target */
3736 manager_send_ready(m
);
3738 /* Log the taint string as soon as we reach basic.target */
3739 log_taint_string(m
);
3742 void manager_check_finished(Manager
*m
) {
3745 if (MANAGER_IS_RELOADING(m
))
3748 /* Verify that we have entered the event loop already, and not left it again. */
3749 if (!MANAGER_IS_RUNNING(m
))
3752 manager_check_basic_target(m
);
3754 if (hashmap_size(m
->jobs
) > 0) {
3755 if (m
->jobs_in_progress_event_source
)
3756 /* Ignore any failure, this is only for feedback */
3757 (void) sd_event_source_set_time(m
->jobs_in_progress_event_source
, now(CLOCK_MONOTONIC
) + JOBS_IN_PROGRESS_WAIT_USEC
);
3762 manager_flip_auto_status(m
, false);
3764 /* Notify Type=idle units that we are done now */
3765 manager_close_idle_pipe(m
);
3767 /* Turn off confirm spawn now */
3768 m
->confirm_spawn
= NULL
;
3770 /* No need to update ask password status when we're going non-interactive */
3771 manager_close_ask_password(m
);
3773 /* This is no longer the first boot */
3774 manager_set_first_boot(m
, false);
3776 if (MANAGER_IS_FINISHED(m
))
3779 dual_timestamp_get(m
->timestamps
+ MANAGER_TIMESTAMP_FINISH
);
3781 manager_notify_finished(m
);
3783 manager_invalidate_startup_units(m
);
3786 static bool generator_path_any(const char* const* paths
) {
3790 /* Optimize by skipping the whole process by not creating output directories
3791 * if no generators are found. */
3792 STRV_FOREACH(path
, (char**) paths
)
3793 if (access(*path
, F_OK
) == 0)
3795 else if (errno
!= ENOENT
)
3796 log_warning_errno(errno
, "Failed to open generator directory %s: %m", *path
);
3801 static const char *const system_env_generator_binary_paths
[] = {
3802 "/run/systemd/system-environment-generators",
3803 "/etc/systemd/system-environment-generators",
3804 "/usr/local/lib/systemd/system-environment-generators",
3805 SYSTEM_ENV_GENERATOR_PATH
,
3809 static const char *const user_env_generator_binary_paths
[] = {
3810 "/run/systemd/user-environment-generators",
3811 "/etc/systemd/user-environment-generators",
3812 "/usr/local/lib/systemd/user-environment-generators",
3813 USER_ENV_GENERATOR_PATH
,
3817 static int manager_run_environment_generators(Manager
*m
) {
3818 char **tmp
= NULL
; /* this is only used in the forked process, no cleanup here */
3819 const char *const *paths
;
3821 [STDOUT_GENERATE
] = &tmp
,
3822 [STDOUT_COLLECT
] = &tmp
,
3823 [STDOUT_CONSUME
] = &m
->transient_environment
,
3827 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_ENV_GENERATORS
))
3830 paths
= MANAGER_IS_SYSTEM(m
) ? system_env_generator_binary_paths
: user_env_generator_binary_paths
;
3832 if (!generator_path_any(paths
))
3835 RUN_WITH_UMASK(0022)
3836 r
= execute_directories(paths
, DEFAULT_TIMEOUT_USEC
, gather_environment
,
3837 args
, NULL
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3841 static int manager_run_generators(Manager
*m
) {
3842 _cleanup_strv_free_
char **paths
= NULL
;
3843 const char *argv
[5];
3848 if (MANAGER_IS_TEST_RUN(m
) && !(m
->test_run_flags
& MANAGER_TEST_RUN_GENERATORS
))
3851 paths
= generator_binary_paths(m
->unit_file_scope
);
3855 if (!generator_path_any((const char* const*) paths
))
3858 r
= lookup_paths_mkdir_generator(&m
->lookup_paths
);
3860 log_error_errno(r
, "Failed to create generator directories: %m");
3864 argv
[0] = NULL
; /* Leave this empty, execute_directory() will fill something in */
3865 argv
[1] = m
->lookup_paths
.generator
;
3866 argv
[2] = m
->lookup_paths
.generator_early
;
3867 argv
[3] = m
->lookup_paths
.generator_late
;
3870 RUN_WITH_UMASK(0022)
3871 (void) execute_directories((const char* const*) paths
, DEFAULT_TIMEOUT_USEC
, NULL
, NULL
,
3872 (char**) argv
, m
->transient_environment
, EXEC_DIR_PARALLEL
| EXEC_DIR_IGNORE_ERRORS
);
3877 lookup_paths_trim_generator(&m
->lookup_paths
);
3881 int manager_transient_environment_add(Manager
*m
, char **plus
) {
3886 if (strv_isempty(plus
))
3889 a
= strv_env_merge(2, m
->transient_environment
, plus
);
3893 sanitize_environment(a
);
3895 return strv_free_and_replace(m
->transient_environment
, a
);
3898 int manager_client_environment_modify(
3903 char **a
= NULL
, **b
= NULL
, **l
;
3907 if (strv_isempty(minus
) && strv_isempty(plus
))
3910 l
= m
->client_environment
;
3912 if (!strv_isempty(minus
)) {
3913 a
= strv_env_delete(l
, 1, minus
);
3920 if (!strv_isempty(plus
)) {
3921 b
= strv_env_merge(2, l
, plus
);
3930 if (m
->client_environment
!= l
)
3931 strv_free(m
->client_environment
);
3938 m
->client_environment
= sanitize_environment(l
);
3942 int manager_get_effective_environment(Manager
*m
, char ***ret
) {
3948 l
= strv_env_merge(2, m
->transient_environment
, m
->client_environment
);
3956 int manager_set_default_rlimits(Manager
*m
, struct rlimit
**default_rlimit
) {
3961 for (i
= 0; i
< _RLIMIT_MAX
; i
++) {
3962 m
->rlimit
[i
] = mfree(m
->rlimit
[i
]);
3964 if (!default_rlimit
[i
])
3967 m
->rlimit
[i
] = newdup(struct rlimit
, default_rlimit
[i
], 1);
3975 void manager_recheck_dbus(Manager
*m
) {
3978 /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all
3979 * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the
3980 * connection of the API bus). That's because the system bus after all runs as service of the system instance,
3981 * while in the user instance we can assume it's already there. */
3983 if (MANAGER_IS_RELOADING(m
))
3984 return; /* don't check while we are reloading… */
3986 if (manager_dbus_is_running(m
, false)) {
3987 (void) bus_init_api(m
);
3989 if (MANAGER_IS_SYSTEM(m
))
3990 (void) bus_init_system(m
);
3992 (void) bus_done_api(m
);
3994 if (MANAGER_IS_SYSTEM(m
))
3995 (void) bus_done_system(m
);
3999 static bool manager_journal_is_running(Manager
*m
) {
4004 if (MANAGER_IS_TEST_RUN(m
))
4007 /* If we are the user manager we can safely assume that the journal is up */
4008 if (!MANAGER_IS_SYSTEM(m
))
4011 /* Check that the socket is not only up, but in RUNNING state */
4012 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SOCKET
);
4015 if (SOCKET(u
)->state
!= SOCKET_RUNNING
)
4018 /* Similar, check if the daemon itself is fully up, too */
4019 u
= manager_get_unit(m
, SPECIAL_JOURNALD_SERVICE
);
4022 if (!IN_SET(SERVICE(u
)->state
, SERVICE_RELOAD
, SERVICE_RUNNING
))
4028 void disable_printk_ratelimit(void) {
4029 /* Disable kernel's printk ratelimit.
4031 * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging
4032 * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line
4033 * setting takes precedence. */
4036 r
= sysctl_write("kernel/printk_devkmsg", "on");
4038 log_debug_errno(r
, "Failed to set sysctl kernel.printk_devkmsg=on: %m");
4041 void manager_recheck_journal(Manager
*m
) {
4045 /* Don't bother with this unless we are in the special situation of being PID 1 */
4046 if (getpid_cached() != 1)
4049 /* Don't check this while we are reloading, things might still change */
4050 if (MANAGER_IS_RELOADING(m
))
4053 /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the
4054 * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger
4055 * an activation ourselves we can't fulfill. */
4056 log_set_prohibit_ipc(!manager_journal_is_running(m
));
4060 void manager_set_show_status(Manager
*m
, ShowStatus mode
) {
4062 assert(IN_SET(mode
, SHOW_STATUS_AUTO
, SHOW_STATUS_NO
, SHOW_STATUS_YES
, SHOW_STATUS_TEMPORARY
));
4064 if (!MANAGER_IS_SYSTEM(m
))
4067 if (m
->show_status
!= mode
)
4068 log_debug("%s showing of status.",
4069 mode
== SHOW_STATUS_NO
? "Disabling" : "Enabling");
4070 m
->show_status
= mode
;
4072 if (IN_SET(mode
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
))
4073 (void) touch("/run/systemd/show-status");
4075 (void) unlink("/run/systemd/show-status");
4078 static bool manager_get_show_status(Manager
*m
, StatusType type
) {
4081 if (!MANAGER_IS_SYSTEM(m
))
4084 if (m
->no_console_output
)
4087 if (!IN_SET(manager_state(m
), MANAGER_INITIALIZING
, MANAGER_STARTING
, MANAGER_STOPPING
))
4090 /* If we cannot find out the status properly, just proceed. */
4091 if (type
!= STATUS_TYPE_EMERGENCY
&& manager_check_ask_password(m
) > 0)
4094 return IN_SET(m
->show_status
, SHOW_STATUS_TEMPORARY
, SHOW_STATUS_YES
);
4097 const char *manager_get_confirm_spawn(Manager
*m
) {
4098 static int last_errno
= 0;
4104 /* Here's the deal: we want to test the validity of the console but don't want
4105 * PID1 to go through the whole console process which might block. But we also
4106 * want to warn the user only once if something is wrong with the console so we
4107 * cannot do the sanity checks after spawning our children. So here we simply do
4108 * really basic tests to hopefully trap common errors.
4110 * If the console suddenly disappear at the time our children will really it
4111 * then they will simply fail to acquire it and a positive answer will be
4112 * assumed. New children will fallback to /dev/console though.
4114 * Note: TTYs are devices that can come and go any time, and frequently aren't
4115 * available yet during early boot (consider a USB rs232 dongle...). If for any
4116 * reason the configured console is not ready, we fallback to the default
4119 if (!m
->confirm_spawn
|| path_equal(m
->confirm_spawn
, "/dev/console"))
4120 return m
->confirm_spawn
;
4122 if (stat(m
->confirm_spawn
, &st
) < 0) {
4127 if (!S_ISCHR(st
.st_mode
)) {
4133 return m
->confirm_spawn
;
4136 if (last_errno
!= r
)
4137 last_errno
= log_warning_errno(r
, "Failed to open %s, using default console: %m", m
->confirm_spawn
);
4139 return "/dev/console";
4142 void manager_set_first_boot(Manager
*m
, bool b
) {
4145 if (!MANAGER_IS_SYSTEM(m
))
4148 if (m
->first_boot
!= (int) b
) {
4150 (void) touch("/run/systemd/first-boot");
4152 (void) unlink("/run/systemd/first-boot");
4158 void manager_disable_confirm_spawn(void) {
4159 (void) touch("/run/systemd/confirm_spawn_disabled");
4162 bool manager_is_confirm_spawn_disabled(Manager
*m
) {
4163 if (!m
->confirm_spawn
)
4166 return access("/run/systemd/confirm_spawn_disabled", F_OK
) >= 0;
4169 void manager_status_printf(Manager
*m
, StatusType type
, const char *status
, const char *format
, ...) {
4172 /* If m is NULL, assume we're after shutdown and let the messages through. */
4174 if (m
&& !manager_get_show_status(m
, type
))
4177 /* XXX We should totally drop the check for ephemeral here
4178 * and thus effectively make 'Type=idle' pointless. */
4179 if (type
== STATUS_TYPE_EPHEMERAL
&& m
&& m
->n_on_console
> 0)
4182 va_start(ap
, format
);
4183 status_vprintf(status
, SHOW_STATUS_ELLIPSIZE
|(type
== STATUS_TYPE_EPHEMERAL
? SHOW_STATUS_EPHEMERAL
: 0), format
, ap
);
4187 Set
*manager_get_units_requiring_mounts_for(Manager
*m
, const char *path
) {
4188 char p
[strlen(path
)+1];
4194 path_simplify(p
, false);
4196 return hashmap_get(m
->units_requiring_mounts_for
, streq(p
, "/") ? "" : p
);
4199 int manager_update_failed_units(Manager
*m
, Unit
*u
, bool failed
) {
4204 assert(u
->manager
== m
);
4206 size
= set_size(m
->failed_units
);
4209 r
= set_ensure_allocated(&m
->failed_units
, NULL
);
4213 if (set_put(m
->failed_units
, u
) < 0)
4216 (void) set_remove(m
->failed_units
, u
);
4218 if (set_size(m
->failed_units
) != size
)
4219 bus_manager_send_change_signal(m
);
4224 ManagerState
manager_state(Manager
*m
) {
4229 /* Did we ever finish booting? If not then we are still starting up */
4230 if (!MANAGER_IS_FINISHED(m
)) {
4232 u
= manager_get_unit(m
, SPECIAL_BASIC_TARGET
);
4233 if (!u
|| !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u
)))
4234 return MANAGER_INITIALIZING
;
4236 return MANAGER_STARTING
;
4239 /* Is the special shutdown target active or queued? If so, we are in shutdown state */
4240 u
= manager_get_unit(m
, SPECIAL_SHUTDOWN_TARGET
);
4241 if (u
&& unit_active_or_pending(u
))
4242 return MANAGER_STOPPING
;
4244 if (MANAGER_IS_SYSTEM(m
)) {
4245 /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */
4246 u
= manager_get_unit(m
, SPECIAL_RESCUE_TARGET
);
4247 if (u
&& unit_active_or_pending(u
))
4248 return MANAGER_MAINTENANCE
;
4250 u
= manager_get_unit(m
, SPECIAL_EMERGENCY_TARGET
);
4251 if (u
&& unit_active_or_pending(u
))
4252 return MANAGER_MAINTENANCE
;
4255 /* Are there any failed units? If so, we are in degraded mode */
4256 if (set_size(m
->failed_units
) > 0)
4257 return MANAGER_DEGRADED
;
4259 return MANAGER_RUNNING
;
4262 #define DESTROY_IPC_FLAG (UINT32_C(1) << 31)
4264 static void manager_unref_uid_internal(
4269 int (*_clean_ipc
)(uid_t uid
)) {
4275 assert(uid_is_valid(uid
));
4278 /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption
4279 * that uid_t and gid_t are actually defined the same way, with the same validity rules.
4281 * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest
4282 * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID
4283 * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added
4284 * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */
4286 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4287 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4289 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4292 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4294 n
= c
& ~DESTROY_IPC_FLAG
;
4298 if (destroy_now
&& n
== 0) {
4299 hashmap_remove(*uid_refs
, UID_TO_PTR(uid
));
4301 if (c
& DESTROY_IPC_FLAG
) {
4302 log_debug("%s " UID_FMT
" is no longer referenced, cleaning up its IPC.",
4303 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4305 (void) _clean_ipc(uid
);
4308 c
= n
| (c
& DESTROY_IPC_FLAG
);
4309 assert_se(hashmap_update(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
)) >= 0);
4313 void manager_unref_uid(Manager
*m
, uid_t uid
, bool destroy_now
) {
4314 manager_unref_uid_internal(m
, &m
->uid_refs
, uid
, destroy_now
, clean_ipc_by_uid
);
4317 void manager_unref_gid(Manager
*m
, gid_t gid
, bool destroy_now
) {
4318 manager_unref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, destroy_now
, clean_ipc_by_gid
);
4321 static int manager_ref_uid_internal(
4332 assert(uid_is_valid(uid
));
4334 /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption
4335 * that uid_t and gid_t are actually defined the same way, with the same validity rules. */
4337 assert_cc(sizeof(uid_t
) == sizeof(gid_t
));
4338 assert_cc(UID_INVALID
== (uid_t
) GID_INVALID
);
4340 if (uid
== 0) /* We don't keep track of root, and will never destroy it */
4343 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4347 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4349 n
= c
& ~DESTROY_IPC_FLAG
;
4352 if (n
& DESTROY_IPC_FLAG
) /* check for overflow */
4355 c
= n
| (c
& DESTROY_IPC_FLAG
) | (clean_ipc
? DESTROY_IPC_FLAG
: 0);
4357 return hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4360 int manager_ref_uid(Manager
*m
, uid_t uid
, bool clean_ipc
) {
4361 return manager_ref_uid_internal(m
, &m
->uid_refs
, uid
, clean_ipc
);
4364 int manager_ref_gid(Manager
*m
, gid_t gid
, bool clean_ipc
) {
4365 return manager_ref_uid_internal(m
, &m
->gid_refs
, (uid_t
) gid
, clean_ipc
);
4368 static void manager_vacuum_uid_refs_internal(
4371 int (*_clean_ipc
)(uid_t uid
)) {
4380 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4384 uid
= PTR_TO_UID(k
);
4385 c
= PTR_TO_UINT32(p
);
4387 n
= c
& ~DESTROY_IPC_FLAG
;
4391 if (c
& DESTROY_IPC_FLAG
) {
4392 log_debug("Found unreferenced %s " UID_FMT
" after reload/reexec. Cleaning up.",
4393 _clean_ipc
== clean_ipc_by_uid
? "UID" : "GID",
4395 (void) _clean_ipc(uid
);
4398 assert_se(hashmap_remove(*uid_refs
, k
) == p
);
4402 void manager_vacuum_uid_refs(Manager
*m
) {
4403 manager_vacuum_uid_refs_internal(m
, &m
->uid_refs
, clean_ipc_by_uid
);
4406 void manager_vacuum_gid_refs(Manager
*m
) {
4407 manager_vacuum_uid_refs_internal(m
, &m
->gid_refs
, clean_ipc_by_gid
);
4410 static void manager_serialize_uid_refs_internal(
4414 const char *field_name
) {
4424 /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter
4425 * of it is better rebuild after a reload/reexec. */
4427 HASHMAP_FOREACH_KEY(p
, k
, *uid_refs
, i
) {
4431 uid
= PTR_TO_UID(k
);
4432 c
= PTR_TO_UINT32(p
);
4434 if (!(c
& DESTROY_IPC_FLAG
))
4437 (void) serialize_item_format(f
, field_name
, UID_FMT
, uid
);
4441 void manager_serialize_uid_refs(Manager
*m
, FILE *f
) {
4442 manager_serialize_uid_refs_internal(m
, f
, &m
->uid_refs
, "destroy-ipc-uid");
4445 void manager_serialize_gid_refs(Manager
*m
, FILE *f
) {
4446 manager_serialize_uid_refs_internal(m
, f
, &m
->gid_refs
, "destroy-ipc-gid");
4449 static void manager_deserialize_uid_refs_one_internal(
4452 const char *value
) {
4462 r
= parse_uid(value
, &uid
);
4463 if (r
< 0 || uid
== 0) {
4464 log_debug("Unable to parse UID reference serialization");
4468 r
= hashmap_ensure_allocated(uid_refs
, &trivial_hash_ops
);
4474 c
= PTR_TO_UINT32(hashmap_get(*uid_refs
, UID_TO_PTR(uid
)));
4475 if (c
& DESTROY_IPC_FLAG
)
4478 c
|= DESTROY_IPC_FLAG
;
4480 r
= hashmap_replace(*uid_refs
, UID_TO_PTR(uid
), UINT32_TO_PTR(c
));
4482 log_debug_errno(r
, "Failed to add UID reference entry: %m");
4487 void manager_deserialize_uid_refs_one(Manager
*m
, const char *value
) {
4488 manager_deserialize_uid_refs_one_internal(m
, &m
->uid_refs
, value
);
4491 void manager_deserialize_gid_refs_one(Manager
*m
, const char *value
) {
4492 manager_deserialize_uid_refs_one_internal(m
, &m
->gid_refs
, value
);
4495 int manager_dispatch_user_lookup_fd(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
4499 char unit_name
[UNIT_NAME_MAX
+1];
4502 Manager
*m
= userdata
;
4510 /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID
4511 * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the
4512 * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */
4514 l
= recv(fd
, &buffer
, sizeof(buffer
), MSG_DONTWAIT
);
4516 if (IN_SET(errno
, EINTR
, EAGAIN
))
4519 return log_error_errno(errno
, "Failed to read from user lookup fd: %m");
4522 if ((size_t) l
<= offsetof(struct buffer
, unit_name
)) {
4523 log_warning("Received too short user lookup message, ignoring.");
4527 if ((size_t) l
> offsetof(struct buffer
, unit_name
) + UNIT_NAME_MAX
) {
4528 log_warning("Received too long user lookup message, ignoring.");
4532 if (!uid_is_valid(buffer
.uid
) && !gid_is_valid(buffer
.gid
)) {
4533 log_warning("Got user lookup message with invalid UID/GID pair, ignoring.");
4537 n
= (size_t) l
- offsetof(struct buffer
, unit_name
);
4538 if (memchr(buffer
.unit_name
, 0, n
)) {
4539 log_warning("Received lookup message with embedded NUL character, ignoring.");
4543 buffer
.unit_name
[n
] = 0;
4544 u
= manager_get_unit(m
, buffer
.unit_name
);
4546 log_debug("Got user lookup message but unit doesn't exist, ignoring.");
4550 log_unit_debug(u
, "User lookup succeeded: uid=" UID_FMT
" gid=" GID_FMT
, buffer
.uid
, buffer
.gid
);
4552 unit_notify_user_lookup(u
, buffer
.uid
, buffer
.gid
);
4556 char *manager_taint_string(Manager
*m
) {
4557 _cleanup_free_
char *destination
= NULL
, *overflowuid
= NULL
, *overflowgid
= NULL
;
4561 /* Returns a "taint string", e.g. "local-hwclock:var-run-bad".
4562 * Only things that are detected at runtime should be tagged
4563 * here. For stuff that is set during compilation, emit a warning
4564 * in the configuration phase. */
4568 buf
= new(char, sizeof("split-usr:"
4572 "overflowuid-not-65534:"
4573 "overflowgid-not-65534:"));
4581 e
= stpcpy(e
, "split-usr:");
4583 if (access("/proc/cgroups", F_OK
) < 0)
4584 e
= stpcpy(e
, "cgroups-missing:");
4586 if (clock_is_localtime(NULL
) > 0)
4587 e
= stpcpy(e
, "local-hwclock:");
4589 r
= readlink_malloc("/var/run", &destination
);
4590 if (r
< 0 || !PATH_IN_SET(destination
, "../run", "/run"))
4591 e
= stpcpy(e
, "var-run-bad:");
4593 r
= read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid
);
4594 if (r
>= 0 && !streq(overflowuid
, "65534"))
4595 e
= stpcpy(e
, "overflowuid-not-65534:");
4597 r
= read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid
);
4598 if (r
>= 0 && !streq(overflowgid
, "65534"))
4599 e
= stpcpy(e
, "overflowgid-not-65534:");
4601 /* remove the last ':' */
4608 void manager_ref_console(Manager
*m
) {
4614 void manager_unref_console(Manager
*m
) {
4616 assert(m
->n_on_console
> 0);
4619 if (m
->n_on_console
== 0)
4620 m
->no_console_output
= false; /* unset no_console_output flag, since the console is definitely free now */
4623 void manager_override_log_level(Manager
*m
, int level
) {
4624 _cleanup_free_
char *s
= NULL
;
4627 if (!m
->log_level_overridden
) {
4628 m
->original_log_level
= log_get_max_level();
4629 m
->log_level_overridden
= true;
4632 (void) log_level_to_string_alloc(level
, &s
);
4633 log_info("Setting log level to %s.", strna(s
));
4635 log_set_max_level(level
);
4638 void manager_restore_original_log_level(Manager
*m
) {
4639 _cleanup_free_
char *s
= NULL
;
4642 if (!m
->log_level_overridden
)
4645 (void) log_level_to_string_alloc(m
->original_log_level
, &s
);
4646 log_info("Restoring log level to original (%s).", strna(s
));
4648 log_set_max_level(m
->original_log_level
);
4649 m
->log_level_overridden
= false;
4652 void manager_override_log_target(Manager
*m
, LogTarget target
) {
4655 if (!m
->log_target_overridden
) {
4656 m
->original_log_target
= log_get_target();
4657 m
->log_target_overridden
= true;
4660 log_info("Setting log target to %s.", log_target_to_string(target
));
4661 log_set_target(target
);
4664 void manager_restore_original_log_target(Manager
*m
) {
4667 if (!m
->log_target_overridden
)
4670 log_info("Restoring log target to original %s.", log_target_to_string(m
->original_log_target
));
4672 log_set_target(m
->original_log_target
);
4673 m
->log_target_overridden
= false;
4676 ManagerTimestamp
manager_timestamp_initrd_mangle(ManagerTimestamp s
) {
4678 s
>= MANAGER_TIMESTAMP_SECURITY_START
&&
4679 s
<= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
)
4680 return s
- MANAGER_TIMESTAMP_SECURITY_START
+ MANAGER_TIMESTAMP_INITRD_SECURITY_START
;
4684 static const char *const manager_state_table
[_MANAGER_STATE_MAX
] = {
4685 [MANAGER_INITIALIZING
] = "initializing",
4686 [MANAGER_STARTING
] = "starting",
4687 [MANAGER_RUNNING
] = "running",
4688 [MANAGER_DEGRADED
] = "degraded",
4689 [MANAGER_MAINTENANCE
] = "maintenance",
4690 [MANAGER_STOPPING
] = "stopping",
4693 DEFINE_STRING_TABLE_LOOKUP(manager_state
, ManagerState
);
4695 static const char *const manager_timestamp_table
[_MANAGER_TIMESTAMP_MAX
] = {
4696 [MANAGER_TIMESTAMP_FIRMWARE
] = "firmware",
4697 [MANAGER_TIMESTAMP_LOADER
] = "loader",
4698 [MANAGER_TIMESTAMP_KERNEL
] = "kernel",
4699 [MANAGER_TIMESTAMP_INITRD
] = "initrd",
4700 [MANAGER_TIMESTAMP_USERSPACE
] = "userspace",
4701 [MANAGER_TIMESTAMP_FINISH
] = "finish",
4702 [MANAGER_TIMESTAMP_SECURITY_START
] = "security-start",
4703 [MANAGER_TIMESTAMP_SECURITY_FINISH
] = "security-finish",
4704 [MANAGER_TIMESTAMP_GENERATORS_START
] = "generators-start",
4705 [MANAGER_TIMESTAMP_GENERATORS_FINISH
] = "generators-finish",
4706 [MANAGER_TIMESTAMP_UNITS_LOAD_START
] = "units-load-start",
4707 [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH
] = "units-load-finish",
4708 [MANAGER_TIMESTAMP_INITRD_SECURITY_START
] = "initrd-security-start",
4709 [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH
] = "initrd-security-finish",
4710 [MANAGER_TIMESTAMP_INITRD_GENERATORS_START
] = "initrd-generators-start",
4711 [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH
] = "initrd-generators-finish",
4712 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START
] = "initrd-units-load-start",
4713 [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH
] = "initrd-units-load-finish",
4716 DEFINE_STRING_TABLE_LOOKUP(manager_timestamp
, ManagerTimestamp
);
4718 static const char* const oom_policy_table
[_OOM_POLICY_MAX
] = {
4719 [OOM_CONTINUE
] = "continue",
4720 [OOM_STOP
] = "stop",
4721 [OOM_KILL
] = "kill",
4724 DEFINE_STRING_TABLE_LOOKUP(oom_policy
, OOMPolicy
);